Version:  2.0.40 2.2.26 2.4.37 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0

Linux/drivers/scsi/qla4xxx/ql4_os.c

  1 /*
  2  * QLogic iSCSI HBA Driver
  3  * Copyright (c)  2003-2013 QLogic Corporation
  4  *
  5  * See LICENSE.qla4xxx for copyright and licensing details.
  6  */
  7 #include <linux/moduleparam.h>
  8 #include <linux/slab.h>
  9 #include <linux/blkdev.h>
 10 #include <linux/iscsi_boot_sysfs.h>
 11 #include <linux/inet.h>
 12 
 13 #include <scsi/scsi_tcq.h>
 14 #include <scsi/scsicam.h>
 15 
 16 #include "ql4_def.h"
 17 #include "ql4_version.h"
 18 #include "ql4_glbl.h"
 19 #include "ql4_dbg.h"
 20 #include "ql4_inline.h"
 21 #include "ql4_83xx.h"
 22 
 23 /*
 24  * Driver version
 25  */
 26 static char qla4xxx_version_str[40];
 27 
 28 /*
 29  * SRB allocation cache
 30  */
 31 static struct kmem_cache *srb_cachep;
 32 
 33 /*
 34  * Module parameter information and variables
 35  */
 36 static int ql4xdisablesysfsboot = 1;
 37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
 38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
 39                  " Set to disable exporting boot targets to sysfs.\n"
 40                  "\t\t  0 - Export boot targets\n"
 41                  "\t\t  1 - Do not export boot targets (Default)");
 42 
 43 int ql4xdontresethba;
 44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
 45 MODULE_PARM_DESC(ql4xdontresethba,
 46                  " Don't reset the HBA for driver recovery.\n"
 47                  "\t\t  0 - It will reset HBA (Default)\n"
 48                  "\t\t  1 - It will NOT reset HBA");
 49 
 50 int ql4xextended_error_logging;
 51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
 52 MODULE_PARM_DESC(ql4xextended_error_logging,
 53                  " Option to enable extended error logging.\n"
 54                  "\t\t  0 - no logging (Default)\n"
 55                  "\t\t  2 - debug logging");
 56 
 57 int ql4xenablemsix = 1;
 58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
 59 MODULE_PARM_DESC(ql4xenablemsix,
 60                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
 61                  "\t\t  0 = enable INTx interrupt mechanism.\n"
 62                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
 63                  "\t\t  2 = enable MSI interrupt mechanism.");
 64 
 65 #define QL4_DEF_QDEPTH 32
 66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
 67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
 68 MODULE_PARM_DESC(ql4xmaxqdepth,
 69                  " Maximum queue depth to report for target devices.\n"
 70                  "\t\t  Default: 32.");
 71 
 72 static int ql4xqfulltracking = 1;
 73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
 74 MODULE_PARM_DESC(ql4xqfulltracking,
 75                  " Enable or disable dynamic tracking and adjustment of\n"
 76                  "\t\t scsi device queue depth.\n"
 77                  "\t\t  0 - Disable.\n"
 78                  "\t\t  1 - Enable. (Default)");
 79 
 80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
 81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
 82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
 83                 " Target Session Recovery Timeout.\n"
 84                 "\t\t  Default: 120 sec.");
 85 
 86 int ql4xmdcapmask = 0;
 87 module_param(ql4xmdcapmask, int, S_IRUGO);
 88 MODULE_PARM_DESC(ql4xmdcapmask,
 89                  " Set the Minidump driver capture mask level.\n"
 90                  "\t\t  Default is 0 (firmware default capture mask)\n"
 91                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
 92 
 93 int ql4xenablemd = 1;
 94 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
 95 MODULE_PARM_DESC(ql4xenablemd,
 96                  " Set to enable minidump.\n"
 97                  "\t\t  0 - disable minidump\n"
 98                  "\t\t  1 - enable minidump (Default)");
 99 
100 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
101 /*
102  * SCSI host template entry points
103  */
104 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
105 
106 /*
107  * iSCSI template entry points
108  */
109 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
110                                      enum iscsi_param param, char *buf);
111 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
112                                   enum iscsi_param param, char *buf);
113 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
114                                   enum iscsi_host_param param, char *buf);
115 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
116                                    uint32_t len);
117 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
118                                    enum iscsi_param_type param_type,
119                                    int param, char *buf);
120 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
121 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
122                                                  struct sockaddr *dst_addr,
123                                                  int non_blocking);
124 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
125 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
126 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
127                                 enum iscsi_param param, char *buf);
128 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
129 static struct iscsi_cls_conn *
130 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
131 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
132                              struct iscsi_cls_conn *cls_conn,
133                              uint64_t transport_fd, int is_leading);
134 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
135 static struct iscsi_cls_session *
136 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
137                         uint16_t qdepth, uint32_t initial_cmdsn);
138 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
139 static void qla4xxx_task_work(struct work_struct *wdata);
140 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
141 static int qla4xxx_task_xmit(struct iscsi_task *);
142 static void qla4xxx_task_cleanup(struct iscsi_task *);
143 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
144 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
145                                    struct iscsi_stats *stats);
146 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
147                              uint32_t iface_type, uint32_t payload_size,
148                              uint32_t pid, struct sockaddr *dst_addr);
149 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
150                                  uint32_t *num_entries, char *buf);
151 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
152 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
153                                   int len);
154 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
155 
156 /*
157  * SCSI host template entry points
158  */
159 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
160 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
161 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
162 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
163 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
164 static int qla4xxx_slave_alloc(struct scsi_device *device);
165 static umode_t qla4_attr_is_visible(int param_type, int param);
166 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
167 
168 /*
169  * iSCSI Flash DDB sysfs entry points
170  */
171 static int
172 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
173                             struct iscsi_bus_flash_conn *fnode_conn,
174                             void *data, int len);
175 static int
176 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
177                             int param, char *buf);
178 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
179                                  int len);
180 static int
181 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
182 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
183                                    struct iscsi_bus_flash_conn *fnode_conn);
184 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
185                                     struct iscsi_bus_flash_conn *fnode_conn);
186 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
187 
188 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
189     QLA82XX_LEGACY_INTR_CONFIG;
190 
191 static struct scsi_host_template qla4xxx_driver_template = {
192         .module                 = THIS_MODULE,
193         .name                   = DRIVER_NAME,
194         .proc_name              = DRIVER_NAME,
195         .queuecommand           = qla4xxx_queuecommand,
196 
197         .eh_abort_handler       = qla4xxx_eh_abort,
198         .eh_device_reset_handler = qla4xxx_eh_device_reset,
199         .eh_target_reset_handler = qla4xxx_eh_target_reset,
200         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
201         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
202 
203         .slave_alloc            = qla4xxx_slave_alloc,
204         .change_queue_depth     = scsi_change_queue_depth,
205 
206         .this_id                = -1,
207         .cmd_per_lun            = 3,
208         .use_clustering         = ENABLE_CLUSTERING,
209         .sg_tablesize           = SG_ALL,
210 
211         .max_sectors            = 0xFFFF,
212         .shost_attrs            = qla4xxx_host_attrs,
213         .host_reset             = qla4xxx_host_reset,
214         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
215         .use_blk_tags           = 1,
216 };
217 
218 static struct iscsi_transport qla4xxx_iscsi_transport = {
219         .owner                  = THIS_MODULE,
220         .name                   = DRIVER_NAME,
221         .caps                   = CAP_TEXT_NEGO |
222                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
223                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
224                                   CAP_MULTI_R2T,
225         .attr_is_visible        = qla4_attr_is_visible,
226         .create_session         = qla4xxx_session_create,
227         .destroy_session        = qla4xxx_session_destroy,
228         .start_conn             = qla4xxx_conn_start,
229         .create_conn            = qla4xxx_conn_create,
230         .bind_conn              = qla4xxx_conn_bind,
231         .stop_conn              = iscsi_conn_stop,
232         .destroy_conn           = qla4xxx_conn_destroy,
233         .set_param              = iscsi_set_param,
234         .get_conn_param         = qla4xxx_conn_get_param,
235         .get_session_param      = qla4xxx_session_get_param,
236         .get_ep_param           = qla4xxx_get_ep_param,
237         .ep_connect             = qla4xxx_ep_connect,
238         .ep_poll                = qla4xxx_ep_poll,
239         .ep_disconnect          = qla4xxx_ep_disconnect,
240         .get_stats              = qla4xxx_conn_get_stats,
241         .send_pdu               = iscsi_conn_send_pdu,
242         .xmit_task              = qla4xxx_task_xmit,
243         .cleanup_task           = qla4xxx_task_cleanup,
244         .alloc_pdu              = qla4xxx_alloc_pdu,
245 
246         .get_host_param         = qla4xxx_host_get_param,
247         .set_iface_param        = qla4xxx_iface_set_param,
248         .get_iface_param        = qla4xxx_get_iface_param,
249         .bsg_request            = qla4xxx_bsg_request,
250         .send_ping              = qla4xxx_send_ping,
251         .get_chap               = qla4xxx_get_chap_list,
252         .delete_chap            = qla4xxx_delete_chap,
253         .set_chap               = qla4xxx_set_chap_entry,
254         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
255         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
256         .new_flashnode          = qla4xxx_sysfs_ddb_add,
257         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
258         .login_flashnode        = qla4xxx_sysfs_ddb_login,
259         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
260         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
261         .get_host_stats         = qla4xxx_get_host_stats,
262 };
263 
264 static struct scsi_transport_template *qla4xxx_scsi_transport;
265 
266 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
267                              uint32_t iface_type, uint32_t payload_size,
268                              uint32_t pid, struct sockaddr *dst_addr)
269 {
270         struct scsi_qla_host *ha = to_qla_host(shost);
271         struct sockaddr_in *addr;
272         struct sockaddr_in6 *addr6;
273         uint32_t options = 0;
274         uint8_t ipaddr[IPv6_ADDR_LEN];
275         int rval;
276 
277         memset(ipaddr, 0, IPv6_ADDR_LEN);
278         /* IPv4 to IPv4 */
279         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
280             (dst_addr->sa_family == AF_INET)) {
281                 addr = (struct sockaddr_in *)dst_addr;
282                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
283                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
284                                   "dest: %pI4\n", __func__,
285                                   &ha->ip_config.ip_address, ipaddr));
286                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
287                                          ipaddr);
288                 if (rval)
289                         rval = -EINVAL;
290         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
291                    (dst_addr->sa_family == AF_INET6)) {
292                 /* IPv6 to IPv6 */
293                 addr6 = (struct sockaddr_in6 *)dst_addr;
294                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
295 
296                 options |= PING_IPV6_PROTOCOL_ENABLE;
297 
298                 /* Ping using LinkLocal address */
299                 if ((iface_num == 0) || (iface_num == 1)) {
300                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
301                                           "src: %pI6 dest: %pI6\n", __func__,
302                                           &ha->ip_config.ipv6_link_local_addr,
303                                           ipaddr));
304                         options |= PING_IPV6_LINKLOCAL_ADDR;
305                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
306                                                  pid, ipaddr);
307                 } else {
308                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
309                                    "not supported\n", __func__, iface_num);
310                         rval = -ENOSYS;
311                         goto exit_send_ping;
312                 }
313 
314                 /*
315                  * If ping using LinkLocal address fails, try ping using
316                  * IPv6 address
317                  */
318                 if (rval != QLA_SUCCESS) {
319                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
320                         if (iface_num == 0) {
321                                 options |= PING_IPV6_ADDR0;
322                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
323                                                   "Ping src: %pI6 "
324                                                   "dest: %pI6\n", __func__,
325                                                   &ha->ip_config.ipv6_addr0,
326                                                   ipaddr));
327                         } else if (iface_num == 1) {
328                                 options |= PING_IPV6_ADDR1;
329                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
330                                                   "Ping src: %pI6 "
331                                                   "dest: %pI6\n", __func__,
332                                                   &ha->ip_config.ipv6_addr1,
333                                                   ipaddr));
334                         }
335                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
336                                                  pid, ipaddr);
337                         if (rval)
338                                 rval = -EINVAL;
339                 }
340         } else
341                 rval = -ENOSYS;
342 exit_send_ping:
343         return rval;
344 }
345 
346 static umode_t qla4_attr_is_visible(int param_type, int param)
347 {
348         switch (param_type) {
349         case ISCSI_HOST_PARAM:
350                 switch (param) {
351                 case ISCSI_HOST_PARAM_HWADDRESS:
352                 case ISCSI_HOST_PARAM_IPADDRESS:
353                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
354                 case ISCSI_HOST_PARAM_PORT_STATE:
355                 case ISCSI_HOST_PARAM_PORT_SPEED:
356                         return S_IRUGO;
357                 default:
358                         return 0;
359                 }
360         case ISCSI_PARAM:
361                 switch (param) {
362                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
363                 case ISCSI_PARAM_PERSISTENT_PORT:
364                 case ISCSI_PARAM_CONN_ADDRESS:
365                 case ISCSI_PARAM_CONN_PORT:
366                 case ISCSI_PARAM_TARGET_NAME:
367                 case ISCSI_PARAM_TPGT:
368                 case ISCSI_PARAM_TARGET_ALIAS:
369                 case ISCSI_PARAM_MAX_BURST:
370                 case ISCSI_PARAM_MAX_R2T:
371                 case ISCSI_PARAM_FIRST_BURST:
372                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
373                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
374                 case ISCSI_PARAM_IFACE_NAME:
375                 case ISCSI_PARAM_CHAP_OUT_IDX:
376                 case ISCSI_PARAM_CHAP_IN_IDX:
377                 case ISCSI_PARAM_USERNAME:
378                 case ISCSI_PARAM_PASSWORD:
379                 case ISCSI_PARAM_USERNAME_IN:
380                 case ISCSI_PARAM_PASSWORD_IN:
381                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
382                 case ISCSI_PARAM_DISCOVERY_SESS:
383                 case ISCSI_PARAM_PORTAL_TYPE:
384                 case ISCSI_PARAM_CHAP_AUTH_EN:
385                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
386                 case ISCSI_PARAM_BIDI_CHAP_EN:
387                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
388                 case ISCSI_PARAM_DEF_TIME2WAIT:
389                 case ISCSI_PARAM_DEF_TIME2RETAIN:
390                 case ISCSI_PARAM_HDRDGST_EN:
391                 case ISCSI_PARAM_DATADGST_EN:
392                 case ISCSI_PARAM_INITIAL_R2T_EN:
393                 case ISCSI_PARAM_IMM_DATA_EN:
394                 case ISCSI_PARAM_PDU_INORDER_EN:
395                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
396                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
397                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
398                 case ISCSI_PARAM_TCP_WSF_DISABLE:
399                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
400                 case ISCSI_PARAM_TCP_TIMER_SCALE:
401                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
402                 case ISCSI_PARAM_TCP_XMIT_WSF:
403                 case ISCSI_PARAM_TCP_RECV_WSF:
404                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
405                 case ISCSI_PARAM_IPV4_TOS:
406                 case ISCSI_PARAM_IPV6_TC:
407                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
408                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
409                 case ISCSI_PARAM_KEEPALIVE_TMO:
410                 case ISCSI_PARAM_LOCAL_PORT:
411                 case ISCSI_PARAM_ISID:
412                 case ISCSI_PARAM_TSID:
413                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
414                 case ISCSI_PARAM_ERL:
415                 case ISCSI_PARAM_STATSN:
416                 case ISCSI_PARAM_EXP_STATSN:
417                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
418                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
419                 case ISCSI_PARAM_LOCAL_IPADDR:
420                         return S_IRUGO;
421                 default:
422                         return 0;
423                 }
424         case ISCSI_NET_PARAM:
425                 switch (param) {
426                 case ISCSI_NET_PARAM_IPV4_ADDR:
427                 case ISCSI_NET_PARAM_IPV4_SUBNET:
428                 case ISCSI_NET_PARAM_IPV4_GW:
429                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
430                 case ISCSI_NET_PARAM_IFACE_ENABLE:
431                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
432                 case ISCSI_NET_PARAM_IPV6_ADDR:
433                 case ISCSI_NET_PARAM_IPV6_ROUTER:
434                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
435                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
436                 case ISCSI_NET_PARAM_VLAN_ID:
437                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
438                 case ISCSI_NET_PARAM_VLAN_ENABLED:
439                 case ISCSI_NET_PARAM_MTU:
440                 case ISCSI_NET_PARAM_PORT:
441                 case ISCSI_NET_PARAM_IPADDR_STATE:
442                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
443                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
444                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
445                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
446                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
447                 case ISCSI_NET_PARAM_TCP_WSF:
448                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
449                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
450                 case ISCSI_NET_PARAM_CACHE_ID:
451                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
452                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
453                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
454                 case ISCSI_NET_PARAM_IPV4_TOS:
455                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
456                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
457                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
458                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
459                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
460                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
461                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
462                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
463                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
464                 case ISCSI_NET_PARAM_REDIRECT_EN:
465                 case ISCSI_NET_PARAM_IPV4_TTL:
466                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
467                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
468                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
469                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
470                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
471                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
472                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
473                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
474                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
475                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
476                         return S_IRUGO;
477                 default:
478                         return 0;
479                 }
480         case ISCSI_IFACE_PARAM:
481                 switch (param) {
482                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
483                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
484                 case ISCSI_IFACE_PARAM_DATADGST_EN:
485                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
486                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
487                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
488                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
489                 case ISCSI_IFACE_PARAM_ERL:
490                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
491                 case ISCSI_IFACE_PARAM_FIRST_BURST:
492                 case ISCSI_IFACE_PARAM_MAX_R2T:
493                 case ISCSI_IFACE_PARAM_MAX_BURST:
494                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
495                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
496                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
497                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
498                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
499                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
500                         return S_IRUGO;
501                 default:
502                         return 0;
503                 }
504         case ISCSI_FLASHNODE_PARAM:
505                 switch (param) {
506                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
507                 case ISCSI_FLASHNODE_PORTAL_TYPE:
508                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
509                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
510                 case ISCSI_FLASHNODE_ENTRY_EN:
511                 case ISCSI_FLASHNODE_HDR_DGST_EN:
512                 case ISCSI_FLASHNODE_DATA_DGST_EN:
513                 case ISCSI_FLASHNODE_IMM_DATA_EN:
514                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
515                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
516                 case ISCSI_FLASHNODE_PDU_INORDER:
517                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
518                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
519                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
520                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
521                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
522                 case ISCSI_FLASHNODE_ERL:
523                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
524                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
525                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
526                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
527                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
528                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
529                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
530                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
531                 case ISCSI_FLASHNODE_FIRST_BURST:
532                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
533                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
534                 case ISCSI_FLASHNODE_MAX_R2T:
535                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
536                 case ISCSI_FLASHNODE_ISID:
537                 case ISCSI_FLASHNODE_TSID:
538                 case ISCSI_FLASHNODE_PORT:
539                 case ISCSI_FLASHNODE_MAX_BURST:
540                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
541                 case ISCSI_FLASHNODE_IPADDR:
542                 case ISCSI_FLASHNODE_ALIAS:
543                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
544                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
545                 case ISCSI_FLASHNODE_LOCAL_PORT:
546                 case ISCSI_FLASHNODE_IPV4_TOS:
547                 case ISCSI_FLASHNODE_IPV6_TC:
548                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
549                 case ISCSI_FLASHNODE_NAME:
550                 case ISCSI_FLASHNODE_TPGT:
551                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
552                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
553                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
554                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
555                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
556                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
557                 case ISCSI_FLASHNODE_USERNAME:
558                 case ISCSI_FLASHNODE_PASSWORD:
559                 case ISCSI_FLASHNODE_STATSN:
560                 case ISCSI_FLASHNODE_EXP_STATSN:
561                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
562                         return S_IRUGO;
563                 default:
564                         return 0;
565                 }
566         }
567 
568         return 0;
569 }
570 
571 /**
572  * qla4xxx_create chap_list - Create CHAP list from FLASH
573  * @ha: pointer to adapter structure
574  *
575  * Read flash and make a list of CHAP entries, during login when a CHAP entry
576  * is received, it will be checked in this list. If entry exist then the CHAP
577  * entry index is set in the DDB. If CHAP entry does not exist in this list
578  * then a new entry is added in FLASH in CHAP table and the index obtained is
579  * used in the DDB.
580  **/
581 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
582 {
583         int rval = 0;
584         uint8_t *chap_flash_data = NULL;
585         uint32_t offset;
586         dma_addr_t chap_dma;
587         uint32_t chap_size = 0;
588 
589         if (is_qla40XX(ha))
590                 chap_size = MAX_CHAP_ENTRIES_40XX *
591                             sizeof(struct ql4_chap_table);
592         else    /* Single region contains CHAP info for both
593                  * ports which is divided into half for each port.
594                  */
595                 chap_size = ha->hw.flt_chap_size / 2;
596 
597         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
598                                              &chap_dma, GFP_KERNEL);
599         if (!chap_flash_data) {
600                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
601                 return;
602         }
603 
604         if (is_qla40XX(ha)) {
605                 offset = FLASH_CHAP_OFFSET;
606         } else {
607                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
608                 if (ha->port_num == 1)
609                         offset += chap_size;
610         }
611 
612         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
613         if (rval != QLA_SUCCESS)
614                 goto exit_chap_list;
615 
616         if (ha->chap_list == NULL)
617                 ha->chap_list = vmalloc(chap_size);
618         if (ha->chap_list == NULL) {
619                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
620                 goto exit_chap_list;
621         }
622 
623         memset(ha->chap_list, 0, chap_size);
624         memcpy(ha->chap_list, chap_flash_data, chap_size);
625 
626 exit_chap_list:
627         dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
628 }
629 
630 static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
631                                      int16_t chap_index,
632                                      struct ql4_chap_table **chap_entry)
633 {
634         int rval = QLA_ERROR;
635         int max_chap_entries;
636 
637         if (!ha->chap_list) {
638                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
639                 rval = QLA_ERROR;
640                 goto exit_get_chap;
641         }
642 
643         if (is_qla80XX(ha))
644                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
645                                    sizeof(struct ql4_chap_table);
646         else
647                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
648 
649         if (chap_index > max_chap_entries) {
650                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
651                 rval = QLA_ERROR;
652                 goto exit_get_chap;
653         }
654 
655         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
656         if ((*chap_entry)->cookie !=
657              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
658                 rval = QLA_ERROR;
659                 *chap_entry = NULL;
660         } else {
661                 rval = QLA_SUCCESS;
662         }
663 
664 exit_get_chap:
665         return rval;
666 }
667 
668 /**
669  * qla4xxx_find_free_chap_index - Find the first free chap index
670  * @ha: pointer to adapter structure
671  * @chap_index: CHAP index to be returned
672  *
673  * Find the first free chap index available in the chap table
674  *
675  * Note: Caller should acquire the chap lock before getting here.
676  **/
677 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
678                                         uint16_t *chap_index)
679 {
680         int i, rval;
681         int free_index = -1;
682         int max_chap_entries = 0;
683         struct ql4_chap_table *chap_table;
684 
685         if (is_qla80XX(ha))
686                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
687                                                 sizeof(struct ql4_chap_table);
688         else
689                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
690 
691         if (!ha->chap_list) {
692                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
693                 rval = QLA_ERROR;
694                 goto exit_find_chap;
695         }
696 
697         for (i = 0; i < max_chap_entries; i++) {
698                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
699 
700                 if ((chap_table->cookie !=
701                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
702                    (i > MAX_RESRV_CHAP_IDX)) {
703                                 free_index = i;
704                                 break;
705                 }
706         }
707 
708         if (free_index != -1) {
709                 *chap_index = free_index;
710                 rval = QLA_SUCCESS;
711         } else {
712                 rval = QLA_ERROR;
713         }
714 
715 exit_find_chap:
716         return rval;
717 }
718 
719 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
720                                   uint32_t *num_entries, char *buf)
721 {
722         struct scsi_qla_host *ha = to_qla_host(shost);
723         struct ql4_chap_table *chap_table;
724         struct iscsi_chap_rec *chap_rec;
725         int max_chap_entries = 0;
726         int valid_chap_entries = 0;
727         int ret = 0, i;
728 
729         if (is_qla80XX(ha))
730                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
731                                         sizeof(struct ql4_chap_table);
732         else
733                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
734 
735         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
736                         __func__, *num_entries, chap_tbl_idx);
737 
738         if (!buf) {
739                 ret = -ENOMEM;
740                 goto exit_get_chap_list;
741         }
742 
743         qla4xxx_create_chap_list(ha);
744 
745         chap_rec = (struct iscsi_chap_rec *) buf;
746         mutex_lock(&ha->chap_sem);
747         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
748                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
749                 if (chap_table->cookie !=
750                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
751                         continue;
752 
753                 chap_rec->chap_tbl_idx = i;
754                 strlcpy(chap_rec->username, chap_table->name,
755                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
756                 strlcpy(chap_rec->password, chap_table->secret,
757                         QL4_CHAP_MAX_SECRET_LEN);
758                 chap_rec->password_length = chap_table->secret_len;
759 
760                 if (chap_table->flags & BIT_7) /* local */
761                         chap_rec->chap_type = CHAP_TYPE_OUT;
762 
763                 if (chap_table->flags & BIT_6) /* peer */
764                         chap_rec->chap_type = CHAP_TYPE_IN;
765 
766                 chap_rec++;
767 
768                 valid_chap_entries++;
769                 if (valid_chap_entries == *num_entries)
770                         break;
771                 else
772                         continue;
773         }
774         mutex_unlock(&ha->chap_sem);
775 
776 exit_get_chap_list:
777         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
778                         __func__,  valid_chap_entries);
779         *num_entries = valid_chap_entries;
780         return ret;
781 }
782 
783 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
784 {
785         int ret = 0;
786         uint16_t *chap_tbl_idx = (uint16_t *) data;
787         struct iscsi_cls_session *cls_session;
788         struct iscsi_session *sess;
789         struct ddb_entry *ddb_entry;
790 
791         if (!iscsi_is_session_dev(dev))
792                 goto exit_is_chap_active;
793 
794         cls_session = iscsi_dev_to_session(dev);
795         sess = cls_session->dd_data;
796         ddb_entry = sess->dd_data;
797 
798         if (iscsi_session_chkready(cls_session))
799                 goto exit_is_chap_active;
800 
801         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
802                 ret = 1;
803 
804 exit_is_chap_active:
805         return ret;
806 }
807 
808 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
809                                   uint16_t chap_tbl_idx)
810 {
811         int ret = 0;
812 
813         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
814                                     __qla4xxx_is_chap_active);
815 
816         return ret;
817 }
818 
819 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
820 {
821         struct scsi_qla_host *ha = to_qla_host(shost);
822         struct ql4_chap_table *chap_table;
823         dma_addr_t chap_dma;
824         int max_chap_entries = 0;
825         uint32_t offset = 0;
826         uint32_t chap_size;
827         int ret = 0;
828 
829         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
830         if (chap_table == NULL)
831                 return -ENOMEM;
832 
833         memset(chap_table, 0, sizeof(struct ql4_chap_table));
834 
835         if (is_qla80XX(ha))
836                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
837                                    sizeof(struct ql4_chap_table);
838         else
839                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
840 
841         if (chap_tbl_idx > max_chap_entries) {
842                 ret = -EINVAL;
843                 goto exit_delete_chap;
844         }
845 
846         /* Check if chap index is in use.
847          * If chap is in use don't delet chap entry */
848         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
849         if (ret) {
850                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
851                            "delete from flash\n", chap_tbl_idx);
852                 ret = -EBUSY;
853                 goto exit_delete_chap;
854         }
855 
856         chap_size = sizeof(struct ql4_chap_table);
857         if (is_qla40XX(ha))
858                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
859         else {
860                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
861                 /* flt_chap_size is CHAP table size for both ports
862                  * so divide it by 2 to calculate the offset for second port
863                  */
864                 if (ha->port_num == 1)
865                         offset += (ha->hw.flt_chap_size / 2);
866                 offset += (chap_tbl_idx * chap_size);
867         }
868 
869         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
870         if (ret != QLA_SUCCESS) {
871                 ret = -EINVAL;
872                 goto exit_delete_chap;
873         }
874 
875         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
876                           __le16_to_cpu(chap_table->cookie)));
877 
878         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
879                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
880                 goto exit_delete_chap;
881         }
882 
883         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
884 
885         offset = FLASH_CHAP_OFFSET |
886                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
887         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
888                                 FLASH_OPT_RMW_COMMIT);
889         if (ret == QLA_SUCCESS && ha->chap_list) {
890                 mutex_lock(&ha->chap_sem);
891                 /* Update ha chap_list cache */
892                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
893                         chap_table, sizeof(struct ql4_chap_table));
894                 mutex_unlock(&ha->chap_sem);
895         }
896         if (ret != QLA_SUCCESS)
897                 ret =  -EINVAL;
898 
899 exit_delete_chap:
900         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
901         return ret;
902 }
903 
904 /**
905  * qla4xxx_set_chap_entry - Make chap entry with given information
906  * @shost: pointer to host
907  * @data: chap info - credentials, index and type to make chap entry
908  * @len: length of data
909  *
910  * Add or update chap entry with the given information
911  **/
912 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
913 {
914         struct scsi_qla_host *ha = to_qla_host(shost);
915         struct iscsi_chap_rec chap_rec;
916         struct ql4_chap_table *chap_entry = NULL;
917         struct iscsi_param_info *param_info;
918         struct nlattr *attr;
919         int max_chap_entries = 0;
920         int type;
921         int rem = len;
922         int rc = 0;
923         int size;
924 
925         memset(&chap_rec, 0, sizeof(chap_rec));
926 
927         nla_for_each_attr(attr, data, len, rem) {
928                 param_info = nla_data(attr);
929 
930                 switch (param_info->param) {
931                 case ISCSI_CHAP_PARAM_INDEX:
932                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
933                         break;
934                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
935                         chap_rec.chap_type = param_info->value[0];
936                         break;
937                 case ISCSI_CHAP_PARAM_USERNAME:
938                         size = min_t(size_t, sizeof(chap_rec.username),
939                                      param_info->len);
940                         memcpy(chap_rec.username, param_info->value, size);
941                         break;
942                 case ISCSI_CHAP_PARAM_PASSWORD:
943                         size = min_t(size_t, sizeof(chap_rec.password),
944                                      param_info->len);
945                         memcpy(chap_rec.password, param_info->value, size);
946                         break;
947                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
948                         chap_rec.password_length = param_info->value[0];
949                         break;
950                 default:
951                         ql4_printk(KERN_ERR, ha,
952                                    "%s: No such sysfs attribute\n", __func__);
953                         rc = -ENOSYS;
954                         goto exit_set_chap;
955                 };
956         }
957 
958         if (chap_rec.chap_type == CHAP_TYPE_IN)
959                 type = BIDI_CHAP;
960         else
961                 type = LOCAL_CHAP;
962 
963         if (is_qla80XX(ha))
964                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
965                                    sizeof(struct ql4_chap_table);
966         else
967                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
968 
969         mutex_lock(&ha->chap_sem);
970         if (chap_rec.chap_tbl_idx < max_chap_entries) {
971                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
972                                                &chap_entry);
973                 if (!rc) {
974                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
975                                 ql4_printk(KERN_INFO, ha,
976                                            "Type mismatch for CHAP entry %d\n",
977                                            chap_rec.chap_tbl_idx);
978                                 rc = -EINVAL;
979                                 goto exit_unlock_chap;
980                         }
981 
982                         /* If chap index is in use then don't modify it */
983                         rc = qla4xxx_is_chap_active(shost,
984                                                     chap_rec.chap_tbl_idx);
985                         if (rc) {
986                                 ql4_printk(KERN_INFO, ha,
987                                            "CHAP entry %d is in use\n",
988                                            chap_rec.chap_tbl_idx);
989                                 rc = -EBUSY;
990                                 goto exit_unlock_chap;
991                         }
992                 }
993         } else {
994                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
995                 if (rc) {
996                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
997                         rc = -EBUSY;
998                         goto exit_unlock_chap;
999                 }
1000         }
1001 
1002         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1003                               chap_rec.chap_tbl_idx, type);
1004 
1005 exit_unlock_chap:
1006         mutex_unlock(&ha->chap_sem);
1007 
1008 exit_set_chap:
1009         return rc;
1010 }
1011 
1012 
1013 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1014 {
1015         struct scsi_qla_host *ha = to_qla_host(shost);
1016         struct iscsi_offload_host_stats *host_stats = NULL;
1017         int host_stats_size;
1018         int ret = 0;
1019         int ddb_idx = 0;
1020         struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1021         int stats_size;
1022         dma_addr_t iscsi_stats_dma;
1023 
1024         DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1025 
1026         host_stats_size = sizeof(struct iscsi_offload_host_stats);
1027 
1028         if (host_stats_size != len) {
1029                 ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1030                            __func__, len, host_stats_size);
1031                 ret = -EINVAL;
1032                 goto exit_host_stats;
1033         }
1034         host_stats = (struct iscsi_offload_host_stats *)buf;
1035 
1036         if (!buf) {
1037                 ret = -ENOMEM;
1038                 goto exit_host_stats;
1039         }
1040 
1041         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1042 
1043         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1044                                             &iscsi_stats_dma, GFP_KERNEL);
1045         if (!ql_iscsi_stats) {
1046                 ql4_printk(KERN_ERR, ha,
1047                            "Unable to allocate memory for iscsi stats\n");
1048                 ret = -ENOMEM;
1049                 goto exit_host_stats;
1050         }
1051 
1052         ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1053                                      iscsi_stats_dma);
1054         if (ret != QLA_SUCCESS) {
1055                 ql4_printk(KERN_ERR, ha,
1056                            "Unable to retrieve iscsi stats\n");
1057                 ret = -EIO;
1058                 goto exit_host_stats;
1059         }
1060         host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1061         host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1062         host_stats->mactx_multicast_frames =
1063                         le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1064         host_stats->mactx_broadcast_frames =
1065                         le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1066         host_stats->mactx_pause_frames =
1067                         le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1068         host_stats->mactx_control_frames =
1069                         le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1070         host_stats->mactx_deferral =
1071                         le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1072         host_stats->mactx_excess_deferral =
1073                         le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1074         host_stats->mactx_late_collision =
1075                         le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1076         host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1077         host_stats->mactx_single_collision =
1078                         le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1079         host_stats->mactx_multiple_collision =
1080                         le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1081         host_stats->mactx_collision =
1082                         le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1083         host_stats->mactx_frames_dropped =
1084                         le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1085         host_stats->mactx_jumbo_frames =
1086                         le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1087         host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1088         host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1089         host_stats->macrx_unknown_control_frames =
1090                 le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1091         host_stats->macrx_pause_frames =
1092                         le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1093         host_stats->macrx_control_frames =
1094                         le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1095         host_stats->macrx_dribble =
1096                         le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1097         host_stats->macrx_frame_length_error =
1098                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1099         host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1100         host_stats->macrx_carrier_sense_error =
1101                 le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1102         host_stats->macrx_frame_discarded =
1103                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1104         host_stats->macrx_frames_dropped =
1105                         le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1106         host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1107         host_stats->mac_encoding_error =
1108                         le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1109         host_stats->macrx_length_error_large =
1110                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1111         host_stats->macrx_length_error_small =
1112                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1113         host_stats->macrx_multicast_frames =
1114                         le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1115         host_stats->macrx_broadcast_frames =
1116                         le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1117         host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1118         host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1119         host_stats->iptx_fragments =
1120                         le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1121         host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1122         host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1123         host_stats->iprx_fragments =
1124                         le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1125         host_stats->ip_datagram_reassembly =
1126                         le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1127         host_stats->ip_invalid_address_error =
1128                         le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1129         host_stats->ip_error_packets =
1130                         le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1131         host_stats->ip_fragrx_overlap =
1132                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1133         host_stats->ip_fragrx_outoforder =
1134                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1135         host_stats->ip_datagram_reassembly_timeout =
1136                 le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1137         host_stats->ipv6tx_packets =
1138                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1139         host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1140         host_stats->ipv6tx_fragments =
1141                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1142         host_stats->ipv6rx_packets =
1143                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1144         host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1145         host_stats->ipv6rx_fragments =
1146                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1147         host_stats->ipv6_datagram_reassembly =
1148                         le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1149         host_stats->ipv6_invalid_address_error =
1150                 le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1151         host_stats->ipv6_error_packets =
1152                         le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1153         host_stats->ipv6_fragrx_overlap =
1154                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1155         host_stats->ipv6_fragrx_outoforder =
1156                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1157         host_stats->ipv6_datagram_reassembly_timeout =
1158                 le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1159         host_stats->tcptx_segments =
1160                         le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1161         host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1162         host_stats->tcprx_segments =
1163                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1164         host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1165         host_stats->tcp_duplicate_ack_retx =
1166                         le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1167         host_stats->tcp_retx_timer_expired =
1168                         le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1169         host_stats->tcprx_duplicate_ack =
1170                         le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1171         host_stats->tcprx_pure_ackr =
1172                         le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1173         host_stats->tcptx_delayed_ack =
1174                         le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1175         host_stats->tcptx_pure_ack =
1176                         le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1177         host_stats->tcprx_segment_error =
1178                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1179         host_stats->tcprx_segment_outoforder =
1180                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1181         host_stats->tcprx_window_probe =
1182                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1183         host_stats->tcprx_window_update =
1184                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1185         host_stats->tcptx_window_probe_persist =
1186                 le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1187         host_stats->ecc_error_correction =
1188                         le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1189         host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1190         host_stats->iscsi_data_bytes_tx =
1191                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1192         host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1193         host_stats->iscsi_data_bytes_rx =
1194                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1195         host_stats->iscsi_io_completed =
1196                         le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1197         host_stats->iscsi_unexpected_io_rx =
1198                         le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1199         host_stats->iscsi_format_error =
1200                         le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1201         host_stats->iscsi_hdr_digest_error =
1202                         le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1203         host_stats->iscsi_data_digest_error =
1204                         le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1205         host_stats->iscsi_sequence_error =
1206                         le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1207 exit_host_stats:
1208         if (ql_iscsi_stats)
1209                 dma_free_coherent(&ha->pdev->dev, host_stats_size,
1210                                   ql_iscsi_stats, iscsi_stats_dma);
1211 
1212         ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1213                    __func__);
1214         return ret;
1215 }
1216 
1217 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1218                                    enum iscsi_param_type param_type,
1219                                    int param, char *buf)
1220 {
1221         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1222         struct scsi_qla_host *ha = to_qla_host(shost);
1223         int ival;
1224         char *pval = NULL;
1225         int len = -ENOSYS;
1226 
1227         if (param_type == ISCSI_NET_PARAM) {
1228                 switch (param) {
1229                 case ISCSI_NET_PARAM_IPV4_ADDR:
1230                         len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1231                         break;
1232                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1233                         len = sprintf(buf, "%pI4\n",
1234                                       &ha->ip_config.subnet_mask);
1235                         break;
1236                 case ISCSI_NET_PARAM_IPV4_GW:
1237                         len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1238                         break;
1239                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1240                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1241                                 OP_STATE(ha->ip_config.ipv4_options,
1242                                          IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1243                         } else {
1244                                 OP_STATE(ha->ip_config.ipv6_options,
1245                                          IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1246                         }
1247 
1248                         len = sprintf(buf, "%s\n", pval);
1249                         break;
1250                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1251                         len = sprintf(buf, "%s\n",
1252                                       (ha->ip_config.tcp_options &
1253                                        TCPOPT_DHCP_ENABLE) ?
1254                                       "dhcp" : "static");
1255                         break;
1256                 case ISCSI_NET_PARAM_IPV6_ADDR:
1257                         if (iface->iface_num == 0)
1258                                 len = sprintf(buf, "%pI6\n",
1259                                               &ha->ip_config.ipv6_addr0);
1260                         if (iface->iface_num == 1)
1261                                 len = sprintf(buf, "%pI6\n",
1262                                               &ha->ip_config.ipv6_addr1);
1263                         break;
1264                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1265                         len = sprintf(buf, "%pI6\n",
1266                                       &ha->ip_config.ipv6_link_local_addr);
1267                         break;
1268                 case ISCSI_NET_PARAM_IPV6_ROUTER:
1269                         len = sprintf(buf, "%pI6\n",
1270                                       &ha->ip_config.ipv6_default_router_addr);
1271                         break;
1272                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1273                         pval = (ha->ip_config.ipv6_addl_options &
1274                                 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1275                                 "nd" : "static";
1276 
1277                         len = sprintf(buf, "%s\n", pval);
1278                         break;
1279                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1280                         pval = (ha->ip_config.ipv6_addl_options &
1281                                 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1282                                 "auto" : "static";
1283 
1284                         len = sprintf(buf, "%s\n", pval);
1285                         break;
1286                 case ISCSI_NET_PARAM_VLAN_ID:
1287                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1288                                 ival = ha->ip_config.ipv4_vlan_tag &
1289                                        ISCSI_MAX_VLAN_ID;
1290                         else
1291                                 ival = ha->ip_config.ipv6_vlan_tag &
1292                                        ISCSI_MAX_VLAN_ID;
1293 
1294                         len = sprintf(buf, "%d\n", ival);
1295                         break;
1296                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1297                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1298                                 ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1299                                        ISCSI_MAX_VLAN_PRIORITY;
1300                         else
1301                                 ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1302                                        ISCSI_MAX_VLAN_PRIORITY;
1303 
1304                         len = sprintf(buf, "%d\n", ival);
1305                         break;
1306                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1307                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1308                                 OP_STATE(ha->ip_config.ipv4_options,
1309                                          IPOPT_VLAN_TAGGING_ENABLE, pval);
1310                         } else {
1311                                 OP_STATE(ha->ip_config.ipv6_options,
1312                                          IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1313                         }
1314                         len = sprintf(buf, "%s\n", pval);
1315                         break;
1316                 case ISCSI_NET_PARAM_MTU:
1317                         len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1318                         break;
1319                 case ISCSI_NET_PARAM_PORT:
1320                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1321                                 len = sprintf(buf, "%d\n",
1322                                               ha->ip_config.ipv4_port);
1323                         else
1324                                 len = sprintf(buf, "%d\n",
1325                                               ha->ip_config.ipv6_port);
1326                         break;
1327                 case ISCSI_NET_PARAM_IPADDR_STATE:
1328                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1329                                 pval = iscsi_get_ipaddress_state_name(
1330                                                 ha->ip_config.ipv4_addr_state);
1331                         } else {
1332                                 if (iface->iface_num == 0)
1333                                         pval = iscsi_get_ipaddress_state_name(
1334                                                 ha->ip_config.ipv6_addr0_state);
1335                                 else if (iface->iface_num == 1)
1336                                         pval = iscsi_get_ipaddress_state_name(
1337                                                 ha->ip_config.ipv6_addr1_state);
1338                         }
1339 
1340                         len = sprintf(buf, "%s\n", pval);
1341                         break;
1342                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1343                         pval = iscsi_get_ipaddress_state_name(
1344                                         ha->ip_config.ipv6_link_local_state);
1345                         len = sprintf(buf, "%s\n", pval);
1346                         break;
1347                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1348                         pval = iscsi_get_router_state_name(
1349                                       ha->ip_config.ipv6_default_router_state);
1350                         len = sprintf(buf, "%s\n", pval);
1351                         break;
1352                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1353                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1354                                 OP_STATE(~ha->ip_config.tcp_options,
1355                                          TCPOPT_DELAYED_ACK_DISABLE, pval);
1356                         } else {
1357                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1358                                          IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1359                         }
1360                         len = sprintf(buf, "%s\n", pval);
1361                         break;
1362                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1363                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1364                                 OP_STATE(~ha->ip_config.tcp_options,
1365                                          TCPOPT_NAGLE_ALGO_DISABLE, pval);
1366                         } else {
1367                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1368                                          IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1369                         }
1370                         len = sprintf(buf, "%s\n", pval);
1371                         break;
1372                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1373                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1374                                 OP_STATE(~ha->ip_config.tcp_options,
1375                                          TCPOPT_WINDOW_SCALE_DISABLE, pval);
1376                         } else {
1377                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1378                                          IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1379                                          pval);
1380                         }
1381                         len = sprintf(buf, "%s\n", pval);
1382                         break;
1383                 case ISCSI_NET_PARAM_TCP_WSF:
1384                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1385                                 len = sprintf(buf, "%d\n",
1386                                               ha->ip_config.tcp_wsf);
1387                         else
1388                                 len = sprintf(buf, "%d\n",
1389                                               ha->ip_config.ipv6_tcp_wsf);
1390                         break;
1391                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1392                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1393                                 ival = (ha->ip_config.tcp_options &
1394                                         TCPOPT_TIMER_SCALE) >> 1;
1395                         else
1396                                 ival = (ha->ip_config.ipv6_tcp_options &
1397                                         IPV6_TCPOPT_TIMER_SCALE) >> 1;
1398 
1399                         len = sprintf(buf, "%d\n", ival);
1400                         break;
1401                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1402                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1403                                 OP_STATE(ha->ip_config.tcp_options,
1404                                          TCPOPT_TIMESTAMP_ENABLE, pval);
1405                         } else {
1406                                 OP_STATE(ha->ip_config.ipv6_tcp_options,
1407                                          IPV6_TCPOPT_TIMESTAMP_EN, pval);
1408                         }
1409                         len = sprintf(buf, "%s\n", pval);
1410                         break;
1411                 case ISCSI_NET_PARAM_CACHE_ID:
1412                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1413                                 len = sprintf(buf, "%d\n",
1414                                               ha->ip_config.ipv4_cache_id);
1415                         else
1416                                 len = sprintf(buf, "%d\n",
1417                                               ha->ip_config.ipv6_cache_id);
1418                         break;
1419                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1420                         OP_STATE(ha->ip_config.tcp_options,
1421                                  TCPOPT_DNS_SERVER_IP_EN, pval);
1422 
1423                         len = sprintf(buf, "%s\n", pval);
1424                         break;
1425                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1426                         OP_STATE(ha->ip_config.tcp_options,
1427                                  TCPOPT_SLP_DA_INFO_EN, pval);
1428 
1429                         len = sprintf(buf, "%s\n", pval);
1430                         break;
1431                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
1432                         OP_STATE(ha->ip_config.ipv4_options,
1433                                  IPOPT_IPV4_TOS_EN, pval);
1434 
1435                         len = sprintf(buf, "%s\n", pval);
1436                         break;
1437                 case ISCSI_NET_PARAM_IPV4_TOS:
1438                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1439                         break;
1440                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1441                         OP_STATE(ha->ip_config.ipv4_options,
1442                                  IPOPT_GRAT_ARP_EN, pval);
1443 
1444                         len = sprintf(buf, "%s\n", pval);
1445                         break;
1446                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1447                         OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1448                                  pval);
1449 
1450                         len = sprintf(buf, "%s\n", pval);
1451                         break;
1452                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1453                         pval = (ha->ip_config.ipv4_alt_cid_len) ?
1454                                (char *)ha->ip_config.ipv4_alt_cid : "";
1455 
1456                         len = sprintf(buf, "%s\n", pval);
1457                         break;
1458                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1459                         OP_STATE(ha->ip_config.ipv4_options,
1460                                  IPOPT_REQ_VID_EN, pval);
1461 
1462                         len = sprintf(buf, "%s\n", pval);
1463                         break;
1464                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1465                         OP_STATE(ha->ip_config.ipv4_options,
1466                                  IPOPT_USE_VID_EN, pval);
1467 
1468                         len = sprintf(buf, "%s\n", pval);
1469                         break;
1470                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1471                         pval = (ha->ip_config.ipv4_vid_len) ?
1472                                (char *)ha->ip_config.ipv4_vid : "";
1473 
1474                         len = sprintf(buf, "%s\n", pval);
1475                         break;
1476                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1477                         OP_STATE(ha->ip_config.ipv4_options,
1478                                  IPOPT_LEARN_IQN_EN, pval);
1479 
1480                         len = sprintf(buf, "%s\n", pval);
1481                         break;
1482                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1483                         OP_STATE(~ha->ip_config.ipv4_options,
1484                                  IPOPT_FRAGMENTATION_DISABLE, pval);
1485 
1486                         len = sprintf(buf, "%s\n", pval);
1487                         break;
1488                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1489                         OP_STATE(ha->ip_config.ipv4_options,
1490                                  IPOPT_IN_FORWARD_EN, pval);
1491 
1492                         len = sprintf(buf, "%s\n", pval);
1493                         break;
1494                 case ISCSI_NET_PARAM_REDIRECT_EN:
1495                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1496                                 OP_STATE(ha->ip_config.ipv4_options,
1497                                          IPOPT_ARP_REDIRECT_EN, pval);
1498                         } else {
1499                                 OP_STATE(ha->ip_config.ipv6_options,
1500                                          IPV6_OPT_REDIRECT_EN, pval);
1501                         }
1502                         len = sprintf(buf, "%s\n", pval);
1503                         break;
1504                 case ISCSI_NET_PARAM_IPV4_TTL:
1505                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1506                         break;
1507                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1508                         OP_STATE(ha->ip_config.ipv6_options,
1509                                  IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1510 
1511                         len = sprintf(buf, "%s\n", pval);
1512                         break;
1513                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
1514                         OP_STATE(ha->ip_config.ipv6_addl_options,
1515                                  IPV6_ADDOPT_MLD_EN, pval);
1516 
1517                         len = sprintf(buf, "%s\n", pval);
1518                         break;
1519                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1520                         len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1521                         break;
1522                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1523                         len = sprintf(buf, "%d\n",
1524                                       ha->ip_config.ipv6_traffic_class);
1525                         break;
1526                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1527                         len = sprintf(buf, "%d\n",
1528                                       ha->ip_config.ipv6_hop_limit);
1529                         break;
1530                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1531                         len = sprintf(buf, "%d\n",
1532                                       ha->ip_config.ipv6_nd_reach_time);
1533                         break;
1534                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1535                         len = sprintf(buf, "%d\n",
1536                                       ha->ip_config.ipv6_nd_rexmit_timer);
1537                         break;
1538                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1539                         len = sprintf(buf, "%d\n",
1540                                       ha->ip_config.ipv6_nd_stale_timeout);
1541                         break;
1542                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1543                         len = sprintf(buf, "%d\n",
1544                                       ha->ip_config.ipv6_dup_addr_detect_count);
1545                         break;
1546                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1547                         len = sprintf(buf, "%d\n",
1548                                       ha->ip_config.ipv6_gw_advrt_mtu);
1549                         break;
1550                 default:
1551                         len = -ENOSYS;
1552                 }
1553         } else if (param_type == ISCSI_IFACE_PARAM) {
1554                 switch (param) {
1555                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1556                         len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1557                         break;
1558                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
1559                         OP_STATE(ha->ip_config.iscsi_options,
1560                                  ISCSIOPTS_HEADER_DIGEST_EN, pval);
1561 
1562                         len = sprintf(buf, "%s\n", pval);
1563                         break;
1564                 case ISCSI_IFACE_PARAM_DATADGST_EN:
1565                         OP_STATE(ha->ip_config.iscsi_options,
1566                                  ISCSIOPTS_DATA_DIGEST_EN, pval);
1567 
1568                         len = sprintf(buf, "%s\n", pval);
1569                         break;
1570                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1571                         OP_STATE(ha->ip_config.iscsi_options,
1572                                  ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1573 
1574                         len = sprintf(buf, "%s\n", pval);
1575                         break;
1576                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1577                         OP_STATE(ha->ip_config.iscsi_options,
1578                                  ISCSIOPTS_INITIAL_R2T_EN, pval);
1579 
1580                         len = sprintf(buf, "%s\n", pval);
1581                         break;
1582                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1583                         OP_STATE(ha->ip_config.iscsi_options,
1584                                  ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1585 
1586                         len = sprintf(buf, "%s\n", pval);
1587                         break;
1588                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1589                         OP_STATE(ha->ip_config.iscsi_options,
1590                                  ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1591 
1592                         len = sprintf(buf, "%s\n", pval);
1593                         break;
1594                 case ISCSI_IFACE_PARAM_ERL:
1595                         len = sprintf(buf, "%d\n",
1596                                       (ha->ip_config.iscsi_options &
1597                                        ISCSIOPTS_ERL));
1598                         break;
1599                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1600                         len = sprintf(buf, "%u\n",
1601                                       ha->ip_config.iscsi_max_pdu_size *
1602                                       BYTE_UNITS);
1603                         break;
1604                 case ISCSI_IFACE_PARAM_FIRST_BURST:
1605                         len = sprintf(buf, "%u\n",
1606                                       ha->ip_config.iscsi_first_burst_len *
1607                                       BYTE_UNITS);
1608                         break;
1609                 case ISCSI_IFACE_PARAM_MAX_R2T:
1610                         len = sprintf(buf, "%d\n",
1611                                       ha->ip_config.iscsi_max_outstnd_r2t);
1612                         break;
1613                 case ISCSI_IFACE_PARAM_MAX_BURST:
1614                         len = sprintf(buf, "%u\n",
1615                                       ha->ip_config.iscsi_max_burst_len *
1616                                       BYTE_UNITS);
1617                         break;
1618                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1619                         OP_STATE(ha->ip_config.iscsi_options,
1620                                  ISCSIOPTS_CHAP_AUTH_EN, pval);
1621 
1622                         len = sprintf(buf, "%s\n", pval);
1623                         break;
1624                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1625                         OP_STATE(ha->ip_config.iscsi_options,
1626                                  ISCSIOPTS_BIDI_CHAP_EN, pval);
1627 
1628                         len = sprintf(buf, "%s\n", pval);
1629                         break;
1630                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1631                         OP_STATE(ha->ip_config.iscsi_options,
1632                                  ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1633 
1634                         len = sprintf(buf, "%s\n", pval);
1635                         break;
1636                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1637                         OP_STATE(ha->ip_config.iscsi_options,
1638                                  ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1639 
1640                         len = sprintf(buf, "%s\n", pval);
1641                         break;
1642                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1643                         OP_STATE(ha->ip_config.iscsi_options,
1644                                  ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1645 
1646                         len = sprintf(buf, "%s\n", pval);
1647                         break;
1648                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1649                         len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1650                         break;
1651                 default:
1652                         len = -ENOSYS;
1653                 }
1654         }
1655 
1656         return len;
1657 }
1658 
1659 static struct iscsi_endpoint *
1660 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1661                    int non_blocking)
1662 {
1663         int ret;
1664         struct iscsi_endpoint *ep;
1665         struct qla_endpoint *qla_ep;
1666         struct scsi_qla_host *ha;
1667         struct sockaddr_in *addr;
1668         struct sockaddr_in6 *addr6;
1669 
1670         if (!shost) {
1671                 ret = -ENXIO;
1672                 pr_err("%s: shost is NULL\n", __func__);
1673                 return ERR_PTR(ret);
1674         }
1675 
1676         ha = iscsi_host_priv(shost);
1677         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1678         if (!ep) {
1679                 ret = -ENOMEM;
1680                 return ERR_PTR(ret);
1681         }
1682 
1683         qla_ep = ep->dd_data;
1684         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1685         if (dst_addr->sa_family == AF_INET) {
1686                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1687                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1688                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1689                                   (char *)&addr->sin_addr));
1690         } else if (dst_addr->sa_family == AF_INET6) {
1691                 memcpy(&qla_ep->dst_addr, dst_addr,
1692                        sizeof(struct sockaddr_in6));
1693                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1694                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1695                                   (char *)&addr6->sin6_addr));
1696         } else {
1697                 ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
1698                            __func__);
1699         }
1700 
1701         qla_ep->host = shost;
1702 
1703         return ep;
1704 }
1705 
1706 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1707 {
1708         struct qla_endpoint *qla_ep;
1709         struct scsi_qla_host *ha;
1710         int ret = 0;
1711 
1712         qla_ep = ep->dd_data;
1713         ha = to_qla_host(qla_ep->host);
1714         DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1715 
1716         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1717                 ret = 1;
1718 
1719         return ret;
1720 }
1721 
1722 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1723 {
1724         struct qla_endpoint *qla_ep;
1725         struct scsi_qla_host *ha;
1726 
1727         qla_ep = ep->dd_data;
1728         ha = to_qla_host(qla_ep->host);
1729         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1730                           ha->host_no));
1731         iscsi_destroy_endpoint(ep);
1732 }
1733 
1734 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1735                                 enum iscsi_param param,
1736                                 char *buf)
1737 {
1738         struct qla_endpoint *qla_ep = ep->dd_data;
1739         struct sockaddr *dst_addr;
1740         struct scsi_qla_host *ha;
1741 
1742         if (!qla_ep)
1743                 return -ENOTCONN;
1744 
1745         ha = to_qla_host(qla_ep->host);
1746         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1747                           ha->host_no));
1748 
1749         switch (param) {
1750         case ISCSI_PARAM_CONN_PORT:
1751         case ISCSI_PARAM_CONN_ADDRESS:
1752                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1753                 if (!dst_addr)
1754                         return -ENOTCONN;
1755 
1756                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1757                                                  &qla_ep->dst_addr, param, buf);
1758         default:
1759                 return -ENOSYS;
1760         }
1761 }
1762 
1763 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1764                                    struct iscsi_stats *stats)
1765 {
1766         struct iscsi_session *sess;
1767         struct iscsi_cls_session *cls_sess;
1768         struct ddb_entry *ddb_entry;
1769         struct scsi_qla_host *ha;
1770         struct ql_iscsi_stats *ql_iscsi_stats;
1771         int stats_size;
1772         int ret;
1773         dma_addr_t iscsi_stats_dma;
1774 
1775         cls_sess = iscsi_conn_to_session(cls_conn);
1776         sess = cls_sess->dd_data;
1777         ddb_entry = sess->dd_data;
1778         ha = ddb_entry->ha;
1779 
1780         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1781                           ha->host_no));
1782         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1783         /* Allocate memory */
1784         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1785                                             &iscsi_stats_dma, GFP_KERNEL);
1786         if (!ql_iscsi_stats) {
1787                 ql4_printk(KERN_ERR, ha,
1788                            "Unable to allocate memory for iscsi stats\n");
1789                 goto exit_get_stats;
1790         }
1791 
1792         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1793                                      iscsi_stats_dma);
1794         if (ret != QLA_SUCCESS) {
1795                 ql4_printk(KERN_ERR, ha,
1796                            "Unable to retrieve iscsi stats\n");
1797                 goto free_stats;
1798         }
1799 
1800         /* octets */
1801         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1802         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1803         /* xmit pdus */
1804         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1805         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1806         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1807         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1808         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1809         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1810         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1811         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1812         /* recv pdus */
1813         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1814         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1815         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1816         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1817         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1818         stats->logoutrsp_pdus =
1819                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1820         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1821         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1822         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1823 
1824 free_stats:
1825         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1826                           iscsi_stats_dma);
1827 exit_get_stats:
1828         return;
1829 }
1830 
1831 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1832 {
1833         struct iscsi_cls_session *session;
1834         struct iscsi_session *sess;
1835         unsigned long flags;
1836         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
1837 
1838         session = starget_to_session(scsi_target(sc->device));
1839         sess = session->dd_data;
1840 
1841         spin_lock_irqsave(&session->lock, flags);
1842         if (session->state == ISCSI_SESSION_FAILED)
1843                 ret = BLK_EH_RESET_TIMER;
1844         spin_unlock_irqrestore(&session->lock, flags);
1845 
1846         return ret;
1847 }
1848 
1849 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1850 {
1851         struct scsi_qla_host *ha = to_qla_host(shost);
1852         struct iscsi_cls_host *ihost = shost->shost_data;
1853         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1854 
1855         qla4xxx_get_firmware_state(ha);
1856 
1857         switch (ha->addl_fw_state & 0x0F00) {
1858         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1859                 speed = ISCSI_PORT_SPEED_10MBPS;
1860                 break;
1861         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1862                 speed = ISCSI_PORT_SPEED_100MBPS;
1863                 break;
1864         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1865                 speed = ISCSI_PORT_SPEED_1GBPS;
1866                 break;
1867         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1868                 speed = ISCSI_PORT_SPEED_10GBPS;
1869                 break;
1870         }
1871         ihost->port_speed = speed;
1872 }
1873 
1874 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1875 {
1876         struct scsi_qla_host *ha = to_qla_host(shost);
1877         struct iscsi_cls_host *ihost = shost->shost_data;
1878         uint32_t state = ISCSI_PORT_STATE_DOWN;
1879 
1880         if (test_bit(AF_LINK_UP, &ha->flags))
1881                 state = ISCSI_PORT_STATE_UP;
1882 
1883         ihost->port_state = state;
1884 }
1885 
1886 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1887                                   enum iscsi_host_param param, char *buf)
1888 {
1889         struct scsi_qla_host *ha = to_qla_host(shost);
1890         int len;
1891 
1892         switch (param) {
1893         case ISCSI_HOST_PARAM_HWADDRESS:
1894                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1895                 break;
1896         case ISCSI_HOST_PARAM_IPADDRESS:
1897                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1898                 break;
1899         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1900                 len = sprintf(buf, "%s\n", ha->name_string);
1901                 break;
1902         case ISCSI_HOST_PARAM_PORT_STATE:
1903                 qla4xxx_set_port_state(shost);
1904                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1905                 break;
1906         case ISCSI_HOST_PARAM_PORT_SPEED:
1907                 qla4xxx_set_port_speed(shost);
1908                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1909                 break;
1910         default:
1911                 return -ENOSYS;
1912         }
1913 
1914         return len;
1915 }
1916 
1917 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1918 {
1919         if (ha->iface_ipv4)
1920                 return;
1921 
1922         /* IPv4 */
1923         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1924                                             &qla4xxx_iscsi_transport,
1925                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1926         if (!ha->iface_ipv4)
1927                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1928                            "iface0.\n");
1929 }
1930 
1931 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1932 {
1933         if (!ha->iface_ipv6_0)
1934                 /* IPv6 iface-0 */
1935                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1936                                                       &qla4xxx_iscsi_transport,
1937                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1938                                                       0);
1939         if (!ha->iface_ipv6_0)
1940                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1941                            "iface0.\n");
1942 
1943         if (!ha->iface_ipv6_1)
1944                 /* IPv6 iface-1 */
1945                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1946                                                       &qla4xxx_iscsi_transport,
1947                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1948                                                       0);
1949         if (!ha->iface_ipv6_1)
1950                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1951                            "iface1.\n");
1952 }
1953 
1954 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1955 {
1956         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1957                 qla4xxx_create_ipv4_iface(ha);
1958 
1959         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1960                 qla4xxx_create_ipv6_iface(ha);
1961 }
1962 
1963 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1964 {
1965         if (ha->iface_ipv4) {
1966                 iscsi_destroy_iface(ha->iface_ipv4);
1967                 ha->iface_ipv4 = NULL;
1968         }
1969 }
1970 
1971 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1972 {
1973         if (ha->iface_ipv6_0) {
1974                 iscsi_destroy_iface(ha->iface_ipv6_0);
1975                 ha->iface_ipv6_0 = NULL;
1976         }
1977         if (ha->iface_ipv6_1) {
1978                 iscsi_destroy_iface(ha->iface_ipv6_1);
1979                 ha->iface_ipv6_1 = NULL;
1980         }
1981 }
1982 
1983 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1984 {
1985         qla4xxx_destroy_ipv4_iface(ha);
1986         qla4xxx_destroy_ipv6_iface(ha);
1987 }
1988 
1989 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1990                              struct iscsi_iface_param_info *iface_param,
1991                              struct addr_ctrl_blk *init_fw_cb)
1992 {
1993         /*
1994          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1995          * iface_num 1 is valid only for IPv6 Addr.
1996          */
1997         switch (iface_param->param) {
1998         case ISCSI_NET_PARAM_IPV6_ADDR:
1999                 if (iface_param->iface_num & 0x1)
2000                         /* IPv6 Addr 1 */
2001                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
2002                                sizeof(init_fw_cb->ipv6_addr1));
2003                 else
2004                         /* IPv6 Addr 0 */
2005                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2006                                sizeof(init_fw_cb->ipv6_addr0));
2007                 break;
2008         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2009                 if (iface_param->iface_num & 0x1)
2010                         break;
2011                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2012                        sizeof(init_fw_cb->ipv6_if_id));
2013                 break;
2014         case ISCSI_NET_PARAM_IPV6_ROUTER:
2015                 if (iface_param->iface_num & 0x1)
2016                         break;
2017                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2018                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2019                 break;
2020         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2021                 /* Autocfg applies to even interface */
2022                 if (iface_param->iface_num & 0x1)
2023                         break;
2024 
2025                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2026                         init_fw_cb->ipv6_addtl_opts &=
2027                                 cpu_to_le16(
2028                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2029                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2030                         init_fw_cb->ipv6_addtl_opts |=
2031                                 cpu_to_le16(
2032                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2033                 else
2034                         ql4_printk(KERN_ERR, ha,
2035                                    "Invalid autocfg setting for IPv6 addr\n");
2036                 break;
2037         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2038                 /* Autocfg applies to even interface */
2039                 if (iface_param->iface_num & 0x1)
2040                         break;
2041 
2042                 if (iface_param->value[0] ==
2043                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2044                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2045                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2046                 else if (iface_param->value[0] ==
2047                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2048                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2049                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2050                 else
2051                         ql4_printk(KERN_ERR, ha,
2052                                    "Invalid autocfg setting for IPv6 linklocal addr\n");
2053                 break;
2054         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2055                 /* Autocfg applies to even interface */
2056                 if (iface_param->iface_num & 0x1)
2057                         break;
2058 
2059                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2060                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2061                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2062                 break;
2063         case ISCSI_NET_PARAM_IFACE_ENABLE:
2064                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2065                         init_fw_cb->ipv6_opts |=
2066                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2067                         qla4xxx_create_ipv6_iface(ha);
2068                 } else {
2069                         init_fw_cb->ipv6_opts &=
2070                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2071                                             0xFFFF);
2072                         qla4xxx_destroy_ipv6_iface(ha);
2073                 }
2074                 break;
2075         case ISCSI_NET_PARAM_VLAN_TAG:
2076                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2077                         break;
2078                 init_fw_cb->ipv6_vlan_tag =
2079                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2080                 break;
2081         case ISCSI_NET_PARAM_VLAN_ENABLED:
2082                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2083                         init_fw_cb->ipv6_opts |=
2084                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2085                 else
2086                         init_fw_cb->ipv6_opts &=
2087                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2088                 break;
2089         case ISCSI_NET_PARAM_MTU:
2090                 init_fw_cb->eth_mtu_size =
2091                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2092                 break;
2093         case ISCSI_NET_PARAM_PORT:
2094                 /* Autocfg applies to even interface */
2095                 if (iface_param->iface_num & 0x1)
2096                         break;
2097 
2098                 init_fw_cb->ipv6_port =
2099                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2100                 break;
2101         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2102                 if (iface_param->iface_num & 0x1)
2103                         break;
2104                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2105                         init_fw_cb->ipv6_tcp_opts |=
2106                                 cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2107                 else
2108                         init_fw_cb->ipv6_tcp_opts &=
2109                                 cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
2110                                             0xFFFF);
2111                 break;
2112         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2113                 if (iface_param->iface_num & 0x1)
2114                         break;
2115                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2116                         init_fw_cb->ipv6_tcp_opts |=
2117                                 cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2118                 else
2119                         init_fw_cb->ipv6_tcp_opts &=
2120                                 cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2121                 break;
2122         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2123                 if (iface_param->iface_num & 0x1)
2124                         break;
2125                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2126                         init_fw_cb->ipv6_tcp_opts |=
2127                                 cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2128                 else
2129                         init_fw_cb->ipv6_tcp_opts &=
2130                                 cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2131                 break;
2132         case ISCSI_NET_PARAM_TCP_WSF:
2133                 if (iface_param->iface_num & 0x1)
2134                         break;
2135                 init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2136                 break;
2137         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2138                 if (iface_param->iface_num & 0x1)
2139                         break;
2140                 init_fw_cb->ipv6_tcp_opts &=
2141                                         cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2142                 init_fw_cb->ipv6_tcp_opts |=
2143                                 cpu_to_le16((iface_param->value[0] << 1) &
2144                                             IPV6_TCPOPT_TIMER_SCALE);
2145                 break;
2146         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2147                 if (iface_param->iface_num & 0x1)
2148                         break;
2149                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2150                         init_fw_cb->ipv6_tcp_opts |=
2151                                 cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2152                 else
2153                         init_fw_cb->ipv6_tcp_opts &=
2154                                 cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2155                 break;
2156         case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2157                 if (iface_param->iface_num & 0x1)
2158                         break;
2159                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2160                         init_fw_cb->ipv6_opts |=
2161                                 cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2162                 else
2163                         init_fw_cb->ipv6_opts &=
2164                                 cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2165                 break;
2166         case ISCSI_NET_PARAM_REDIRECT_EN:
2167                 if (iface_param->iface_num & 0x1)
2168                         break;
2169                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2170                         init_fw_cb->ipv6_opts |=
2171                                 cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2172                 else
2173                         init_fw_cb->ipv6_opts &=
2174                                 cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2175                 break;
2176         case ISCSI_NET_PARAM_IPV6_MLD_EN:
2177                 if (iface_param->iface_num & 0x1)
2178                         break;
2179                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2180                         init_fw_cb->ipv6_addtl_opts |=
2181                                 cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2182                 else
2183                         init_fw_cb->ipv6_addtl_opts &=
2184                                 cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2185                 break;
2186         case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2187                 if (iface_param->iface_num & 0x1)
2188                         break;
2189                 init_fw_cb->ipv6_flow_lbl =
2190                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2191                 break;
2192         case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2193                 if (iface_param->iface_num & 0x1)
2194                         break;
2195                 init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2196                 break;
2197         case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2198                 if (iface_param->iface_num & 0x1)
2199                         break;
2200                 init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2201                 break;
2202         case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2203                 if (iface_param->iface_num & 0x1)
2204                         break;
2205                 init_fw_cb->ipv6_nd_reach_time =
2206                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2207                 break;
2208         case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2209                 if (iface_param->iface_num & 0x1)
2210                         break;
2211                 init_fw_cb->ipv6_nd_rexmit_timer =
2212                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2213                 break;
2214         case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2215                 if (iface_param->iface_num & 0x1)
2216                         break;
2217                 init_fw_cb->ipv6_nd_stale_timeout =
2218                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2219                 break;
2220         case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2221                 if (iface_param->iface_num & 0x1)
2222                         break;
2223                 init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2224                 break;
2225         case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2226                 if (iface_param->iface_num & 0x1)
2227                         break;
2228                 init_fw_cb->ipv6_gw_advrt_mtu =
2229                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2230                 break;
2231         default:
2232                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2233                            iface_param->param);
2234                 break;
2235         }
2236 }
2237 
2238 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2239                              struct iscsi_iface_param_info *iface_param,
2240                              struct addr_ctrl_blk *init_fw_cb)
2241 {
2242         switch (iface_param->param) {
2243         case ISCSI_NET_PARAM_IPV4_ADDR:
2244                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2245                        sizeof(init_fw_cb->ipv4_addr));
2246                 break;
2247         case ISCSI_NET_PARAM_IPV4_SUBNET:
2248                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2249                        sizeof(init_fw_cb->ipv4_subnet));
2250                 break;
2251         case ISCSI_NET_PARAM_IPV4_GW:
2252                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2253                        sizeof(init_fw_cb->ipv4_gw_addr));
2254                 break;
2255         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2256                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2257                         init_fw_cb->ipv4_tcp_opts |=
2258                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
2259                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2260                         init_fw_cb->ipv4_tcp_opts &=
2261                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2262                 else
2263                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2264                 break;
2265         case ISCSI_NET_PARAM_IFACE_ENABLE:
2266                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2267                         init_fw_cb->ipv4_ip_opts |=
2268                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2269                         qla4xxx_create_ipv4_iface(ha);
2270                 } else {
2271                         init_fw_cb->ipv4_ip_opts &=
2272                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2273                                             0xFFFF);
2274                         qla4xxx_destroy_ipv4_iface(ha);
2275                 }
2276                 break;
2277         case ISCSI_NET_PARAM_VLAN_TAG:
2278                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2279                         break;
2280                 init_fw_cb->ipv4_vlan_tag =
2281                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2282                 break;
2283         case ISCSI_NET_PARAM_VLAN_ENABLED:
2284                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2285                         init_fw_cb->ipv4_ip_opts |=
2286                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2287                 else
2288                         init_fw_cb->ipv4_ip_opts &=
2289                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2290                 break;
2291         case ISCSI_NET_PARAM_MTU:
2292                 init_fw_cb->eth_mtu_size =
2293                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2294                 break;
2295         case ISCSI_NET_PARAM_PORT:
2296                 init_fw_cb->ipv4_port =
2297                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2298                 break;
2299         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2300                 if (iface_param->iface_num & 0x1)
2301                         break;
2302                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2303                         init_fw_cb->ipv4_tcp_opts |=
2304                                 cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2305                 else
2306                         init_fw_cb->ipv4_tcp_opts &=
2307                                 cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
2308                                             0xFFFF);
2309                 break;
2310         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2311                 if (iface_param->iface_num & 0x1)
2312                         break;
2313                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2314                         init_fw_cb->ipv4_tcp_opts |=
2315                                 cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2316                 else
2317                         init_fw_cb->ipv4_tcp_opts &=
2318                                 cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2319                 break;
2320         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2321                 if (iface_param->iface_num & 0x1)
2322                         break;
2323                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2324                         init_fw_cb->ipv4_tcp_opts |=
2325                                 cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2326                 else
2327                         init_fw_cb->ipv4_tcp_opts &=
2328                                 cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2329                 break;
2330         case ISCSI_NET_PARAM_TCP_WSF:
2331                 if (iface_param->iface_num & 0x1)
2332                         break;
2333                 init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2334                 break;
2335         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2336                 if (iface_param->iface_num & 0x1)
2337                         break;
2338                 init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2339                 init_fw_cb->ipv4_tcp_opts |=
2340                                 cpu_to_le16((iface_param->value[0] << 1) &
2341                                             TCPOPT_TIMER_SCALE);
2342                 break;
2343         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2344                 if (iface_param->iface_num & 0x1)
2345                         break;
2346                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2347                         init_fw_cb->ipv4_tcp_opts |=
2348                                 cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2349                 else
2350                         init_fw_cb->ipv4_tcp_opts &=
2351                                 cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2352                 break;
2353         case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2354                 if (iface_param->iface_num & 0x1)
2355                         break;
2356                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2357                         init_fw_cb->ipv4_tcp_opts |=
2358                                 cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2359                 else
2360                         init_fw_cb->ipv4_tcp_opts &=
2361                                 cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2362                 break;
2363         case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2364                 if (iface_param->iface_num & 0x1)
2365                         break;
2366                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2367                         init_fw_cb->ipv4_tcp_opts |=
2368                                 cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2369                 else
2370                         init_fw_cb->ipv4_tcp_opts &=
2371                                 cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2372                 break;
2373         case ISCSI_NET_PARAM_IPV4_TOS_EN:
2374                 if (iface_param->iface_num & 0x1)
2375                         break;
2376                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2377                         init_fw_cb->ipv4_ip_opts |=
2378                                 cpu_to_le16(IPOPT_IPV4_TOS_EN);
2379                 else
2380                         init_fw_cb->ipv4_ip_opts &=
2381                                 cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2382                 break;
2383         case ISCSI_NET_PARAM_IPV4_TOS:
2384                 if (iface_param->iface_num & 0x1)
2385                         break;
2386                 init_fw_cb->ipv4_tos = iface_param->value[0];
2387                 break;
2388         case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
2389                 if (iface_param->iface_num & 0x1)
2390                         break;
2391                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2392                         init_fw_cb->ipv4_ip_opts |=
2393                                         cpu_to_le16(IPOPT_GRAT_ARP_EN);
2394                 else
2395                         init_fw_cb->ipv4_ip_opts &=
2396                                         cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2397                 break;
2398         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2399                 if (iface_param->iface_num & 0x1)
2400                         break;
2401                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2402                         init_fw_cb->ipv4_ip_opts |=
2403                                 cpu_to_le16(IPOPT_ALT_CID_EN);
2404                 else
2405                         init_fw_cb->ipv4_ip_opts &=
2406                                 cpu_to_le16(~IPOPT_ALT_CID_EN);
2407                 break;
2408         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2409                 if (iface_param->iface_num & 0x1)
2410                         break;
2411                 memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2412                        (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2413                 init_fw_cb->ipv4_dhcp_alt_cid_len =
2414                                         strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2415                 break;
2416         case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2417                 if (iface_param->iface_num & 0x1)
2418                         break;
2419                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2420                         init_fw_cb->ipv4_ip_opts |=
2421                                         cpu_to_le16(IPOPT_REQ_VID_EN);
2422                 else
2423                         init_fw_cb->ipv4_ip_opts &=
2424                                         cpu_to_le16(~IPOPT_REQ_VID_EN);
2425                 break;
2426         case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2427                 if (iface_param->iface_num & 0x1)
2428                         break;
2429                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2430                         init_fw_cb->ipv4_ip_opts |=
2431                                         cpu_to_le16(IPOPT_USE_VID_EN);
2432                 else
2433                         init_fw_cb->ipv4_ip_opts &=
2434                                         cpu_to_le16(~IPOPT_USE_VID_EN);
2435                 break;
2436         case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2437                 if (iface_param->iface_num & 0x1)
2438                         break;
2439                 memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2440                        (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2441                 init_fw_cb->ipv4_dhcp_vid_len =
2442                                         strlen(init_fw_cb->ipv4_dhcp_vid);
2443                 break;
2444         case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2445                 if (iface_param->iface_num & 0x1)
2446                         break;
2447                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2448                         init_fw_cb->ipv4_ip_opts |=
2449                                         cpu_to_le16(IPOPT_LEARN_IQN_EN);
2450                 else
2451                         init_fw_cb->ipv4_ip_opts &=
2452                                         cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2453                 break;
2454         case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2455                 if (iface_param->iface_num & 0x1)
2456                         break;
2457                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2458                         init_fw_cb->ipv4_ip_opts |=
2459                                 cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2460                 else
2461                         init_fw_cb->ipv4_ip_opts &=
2462                                 cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2463                 break;
2464         case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2465                 if (iface_param->iface_num & 0x1)
2466                         break;
2467                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2468                         init_fw_cb->ipv4_ip_opts |=
2469                                 cpu_to_le16(IPOPT_IN_FORWARD_EN);
2470                 else
2471                         init_fw_cb->ipv4_ip_opts &=
2472                                 cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2473                 break;
2474         case ISCSI_NET_PARAM_REDIRECT_EN:
2475                 if (iface_param->iface_num & 0x1)
2476                         break;
2477                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2478                         init_fw_cb->ipv4_ip_opts |=
2479                                 cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2480                 else
2481                         init_fw_cb->ipv4_ip_opts &=
2482                                 cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2483                 break;
2484         case ISCSI_NET_PARAM_IPV4_TTL:
2485                 if (iface_param->iface_num & 0x1)
2486                         break;
2487                 init_fw_cb->ipv4_ttl = iface_param->value[0];
2488                 break;
2489         default:
2490                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2491                            iface_param->param);
2492                 break;
2493         }
2494 }
2495 
2496 static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2497                                     struct iscsi_iface_param_info *iface_param,
2498                                     struct addr_ctrl_blk *init_fw_cb)
2499 {
2500         switch (iface_param->param) {
2501         case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2502                 if (iface_param->iface_num & 0x1)
2503                         break;
2504                 init_fw_cb->def_timeout =
2505                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2506                 break;
2507         case ISCSI_IFACE_PARAM_HDRDGST_EN:
2508                 if (iface_param->iface_num & 0x1)
2509                         break;
2510                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2511                         init_fw_cb->iscsi_opts |=
2512                                 cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2513                 else
2514                         init_fw_cb->iscsi_opts &=
2515                                 cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2516                 break;
2517         case ISCSI_IFACE_PARAM_DATADGST_EN:
2518                 if (iface_param->iface_num & 0x1)
2519                         break;
2520                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2521                         init_fw_cb->iscsi_opts |=
2522                                 cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2523                 else
2524                         init_fw_cb->iscsi_opts &=
2525                                 cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2526                 break;
2527         case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2528                 if (iface_param->iface_num & 0x1)
2529                         break;
2530                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2531                         init_fw_cb->iscsi_opts |=
2532                                 cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2533                 else
2534                         init_fw_cb->iscsi_opts &=
2535                                 cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2536                 break;
2537         case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2538                 if (iface_param->iface_num & 0x1)
2539                         break;
2540                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2541                         init_fw_cb->iscsi_opts |=
2542                                 cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2543                 else
2544                         init_fw_cb->iscsi_opts &=
2545                                 cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2546                 break;
2547         case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2548                 if (iface_param->iface_num & 0x1)
2549                         break;
2550                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2551                         init_fw_cb->iscsi_opts |=
2552                                 cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2553                 else
2554                         init_fw_cb->iscsi_opts &=
2555                                 cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2556                 break;
2557         case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2558                 if (iface_param->iface_num & 0x1)
2559                         break;
2560                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2561                         init_fw_cb->iscsi_opts |=
2562                                 cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2563                 else
2564                         init_fw_cb->iscsi_opts &=
2565                                 cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2566                 break;
2567         case ISCSI_IFACE_PARAM_ERL:
2568                 if (iface_param->iface_num & 0x1)
2569                         break;
2570                 init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2571                 init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2572                                                       ISCSIOPTS_ERL);
2573                 break;
2574         case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2575                 if (iface_param->iface_num & 0x1)
2576                         break;
2577                 init_fw_cb->iscsi_max_pdu_size =
2578                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2579                                 BYTE_UNITS;
2580                 break;
2581         case ISCSI_IFACE_PARAM_FIRST_BURST:
2582                 if (iface_param->iface_num & 0x1)
2583                         break;
2584                 init_fw_cb->iscsi_fburst_len =
2585                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2586                                 BYTE_UNITS;
2587                 break;
2588         case ISCSI_IFACE_PARAM_MAX_R2T:
2589                 if (iface_param->iface_num & 0x1)
2590                         break;
2591                 init_fw_cb->iscsi_max_outstnd_r2t =
2592                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2593                 break;
2594         case ISCSI_IFACE_PARAM_MAX_BURST:
2595                 if (iface_param->iface_num & 0x1)
2596                         break;
2597                 init_fw_cb->iscsi_max_burst_len =
2598                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2599                                 BYTE_UNITS;
2600                 break;
2601         case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2602                 if (iface_param->iface_num & 0x1)
2603                         break;
2604                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2605                         init_fw_cb->iscsi_opts |=
2606                                 cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2607                 else
2608                         init_fw_cb->iscsi_opts &=
2609                                 cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2610                 break;
2611         case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2612                 if (iface_param->iface_num & 0x1)
2613                         break;
2614                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2615                         init_fw_cb->iscsi_opts |=
2616                                 cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2617                 else
2618                         init_fw_cb->iscsi_opts &=
2619                                 cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2620                 break;
2621         case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2622                 if (iface_param->iface_num & 0x1)
2623                         break;
2624                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2625                         init_fw_cb->iscsi_opts |=
2626                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2627                 else
2628                         init_fw_cb->iscsi_opts &=
2629                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2630                 break;
2631         case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2632                 if (iface_param->iface_num & 0x1)
2633                         break;
2634                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2635                         init_fw_cb->iscsi_opts |=
2636                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2637                 else
2638                         init_fw_cb->iscsi_opts &=
2639                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2640                 break;
2641         case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2642                 if (iface_param->iface_num & 0x1)
2643                         break;
2644                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2645                         init_fw_cb->iscsi_opts |=
2646                                 cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2647                 else
2648                         init_fw_cb->iscsi_opts &=
2649                                 cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2650                 break;
2651         default:
2652                 ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2653                            iface_param->param);
2654                 break;
2655         }
2656 }
2657 
2658 static void
2659 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2660 {
2661         struct addr_ctrl_blk_def *acb;
2662         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2663         memset(acb->reserved1, 0, sizeof(acb->reserved1));
2664         memset(acb->reserved2, 0, sizeof(acb->reserved2));
2665         memset(acb->reserved3, 0, sizeof(acb->reserved3));
2666         memset(acb->reserved4, 0, sizeof(acb->reserved4));
2667         memset(acb->reserved5, 0, sizeof(acb->reserved5));
2668         memset(acb->reserved6, 0, sizeof(acb->reserved6));
2669         memset(acb->reserved7, 0, sizeof(acb->reserved7));
2670         memset(acb->reserved8, 0, sizeof(acb->reserved8));
2671         memset(acb->reserved9, 0, sizeof(acb->reserved9));
2672         memset(acb->reserved10, 0, sizeof(acb->reserved10));
2673         memset(acb->reserved11, 0, sizeof(acb->reserved11));
2674         memset(acb->reserved12, 0, sizeof(acb->reserved12));
2675         memset(acb->reserved13, 0, sizeof(acb->reserved13));
2676         memset(acb->reserved14, 0, sizeof(acb->reserved14));
2677         memset(acb->reserved15, 0, sizeof(acb->reserved15));
2678 }
2679 
2680 static int
2681 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2682 {
2683         struct scsi_qla_host *ha = to_qla_host(shost);
2684         int rval = 0;
2685         struct iscsi_iface_param_info *iface_param = NULL;
2686         struct addr_ctrl_blk *init_fw_cb = NULL;
2687         dma_addr_t init_fw_cb_dma;
2688         uint32_t mbox_cmd[MBOX_REG_COUNT];
2689         uint32_t mbox_sts[MBOX_REG_COUNT];
2690         uint32_t rem = len;
2691         struct nlattr *attr;
2692 
2693         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
2694                                         sizeof(struct addr_ctrl_blk),
2695                                         &init_fw_cb_dma, GFP_KERNEL);
2696         if (!init_fw_cb) {
2697                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2698                            __func__);
2699                 return -ENOMEM;
2700         }
2701 
2702         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2703         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2704         memset(&mbox_sts, 0, sizeof(mbox_sts));
2705 
2706         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2707                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2708                 rval = -EIO;
2709                 goto exit_init_fw_cb;
2710         }
2711 
2712         nla_for_each_attr(attr, data, len, rem) {
2713                 iface_param = nla_data(attr);
2714 
2715                 if (iface_param->param_type == ISCSI_NET_PARAM) {
2716                         switch (iface_param->iface_type) {
2717                         case ISCSI_IFACE_TYPE_IPV4:
2718                                 switch (iface_param->iface_num) {
2719                                 case 0:
2720                                         qla4xxx_set_ipv4(ha, iface_param,
2721                                                          init_fw_cb);
2722                                         break;
2723                                 default:
2724                                 /* Cannot have more than one IPv4 interface */
2725                                         ql4_printk(KERN_ERR, ha,
2726                                                    "Invalid IPv4 iface number = %d\n",
2727                                                    iface_param->iface_num);
2728                                         break;
2729                                 }
2730                                 break;
2731                         case ISCSI_IFACE_TYPE_IPV6:
2732                                 switch (iface_param->iface_num) {
2733                                 case 0:
2734                                 case 1:
2735                                         qla4xxx_set_ipv6(ha, iface_param,
2736                                                          init_fw_cb);
2737                                         break;
2738                                 default:
2739                                 /* Cannot have more than two IPv6 interface */
2740                                         ql4_printk(KERN_ERR, ha,
2741                                                    "Invalid IPv6 iface number = %d\n",
2742                                                    iface_param->iface_num);
2743                                         break;
2744                                 }
2745                                 break;
2746                         default:
2747                                 ql4_printk(KERN_ERR, ha,
2748                                            "Invalid iface type\n");
2749                                 break;
2750                         }
2751                 } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2752                                 qla4xxx_set_iscsi_param(ha, iface_param,
2753                                                         init_fw_cb);
2754                 } else {
2755                         continue;
2756                 }
2757         }
2758 
2759         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2760 
2761         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2762                                  sizeof(struct addr_ctrl_blk),
2763                                  FLASH_OPT_RMW_COMMIT);
2764         if (rval != QLA_SUCCESS) {
2765                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2766                            __func__);
2767                 rval = -EIO;
2768                 goto exit_init_fw_cb;
2769         }
2770 
2771         rval = qla4xxx_disable_acb(ha);
2772         if (rval != QLA_SUCCESS) {
2773                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2774                            __func__);
2775                 rval = -EIO;
2776                 goto exit_init_fw_cb;
2777         }
2778 
2779         wait_for_completion_timeout(&ha->disable_acb_comp,
2780                                     DISABLE_ACB_TOV * HZ);
2781 
2782         qla4xxx_initcb_to_acb(init_fw_cb);
2783 
2784         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2785         if (rval != QLA_SUCCESS) {
2786                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2787                            __func__);
2788                 rval = -EIO;
2789                 goto exit_init_fw_cb;
2790         }
2791 
2792         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2793         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2794                                   init_fw_cb_dma);
2795 
2796 exit_init_fw_cb:
2797         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2798                           init_fw_cb, init_fw_cb_dma);
2799 
2800         return rval;
2801 }
2802 
2803 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2804                                      enum iscsi_param param, char *buf)
2805 {
2806         struct iscsi_session *sess = cls_sess->dd_data;
2807         struct ddb_entry *ddb_entry = sess->dd_data;
2808         struct scsi_qla_host *ha = ddb_entry->ha;
2809         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2810         struct ql4_chap_table chap_tbl;
2811         int rval, len;
2812         uint16_t idx;
2813 
2814         memset(&chap_tbl, 0, sizeof(chap_tbl));
2815         switch (param) {
2816         case ISCSI_PARAM_CHAP_IN_IDX:
2817                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
2818                                               sess->password_in, BIDI_CHAP,
2819                                               &idx);
2820                 if (rval)
2821                         len = sprintf(buf, "\n");
2822                 else
2823                         len = sprintf(buf, "%hu\n", idx);
2824                 break;
2825         case ISCSI_PARAM_CHAP_OUT_IDX:
2826                 if (ddb_entry->ddb_type == FLASH_DDB) {
2827                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2828                                 idx = ddb_entry->chap_tbl_idx;
2829                                 rval = QLA_SUCCESS;
2830                         } else {
2831                                 rval = QLA_ERROR;
2832                         }
2833                 } else {
2834                         rval = qla4xxx_get_chap_index(ha, sess->username,
2835                                                       sess->password,
2836                                                       LOCAL_CHAP, &idx);
2837                 }
2838                 if (rval)
2839                         len = sprintf(buf, "\n");
2840                 else
2841                         len = sprintf(buf, "%hu\n", idx);
2842                 break;
2843         case ISCSI_PARAM_USERNAME:
2844         case ISCSI_PARAM_PASSWORD:
2845                 /* First, populate session username and password for FLASH DDB,
2846                  * if not already done. This happens when session login fails
2847                  * for a FLASH DDB.
2848                  */
2849                 if (ddb_entry->ddb_type == FLASH_DDB &&
2850                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2851                     !sess->username && !sess->password) {
2852                         idx = ddb_entry->chap_tbl_idx;
2853                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2854                                                             chap_tbl.secret,
2855                                                             idx);
2856                         if (!rval) {
2857                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2858                                                 (char *)chap_tbl.name,
2859                                                 strlen((char *)chap_tbl.name));
2860                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2861                                                 (char *)chap_tbl.secret,
2862                                                 chap_tbl.secret_len);
2863                         }
2864                 }
2865                 /* allow fall-through */
2866         default:
2867                 return iscsi_session_get_param(cls_sess, param, buf);
2868         }
2869 
2870         return len;
2871 }
2872 
2873 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2874                                   enum iscsi_param param, char *buf)
2875 {
2876         struct iscsi_conn *conn;
2877         struct qla_conn *qla_conn;
2878         struct sockaddr *dst_addr;
2879 
2880         conn = cls_conn->dd_data;
2881         qla_conn = conn->dd_data;
2882         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2883 
2884         switch (param) {
2885         case ISCSI_PARAM_CONN_PORT:
2886         case ISCSI_PARAM_CONN_ADDRESS:
2887                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2888                                                  dst_addr, param, buf);
2889         default:
2890                 return iscsi_conn_get_param(cls_conn, param, buf);
2891         }
2892 }
2893 
2894 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2895 {
2896         uint32_t mbx_sts = 0;
2897         uint16_t tmp_ddb_index;
2898         int ret;
2899 
2900 get_ddb_index:
2901         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2902 
2903         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2904                 DEBUG2(ql4_printk(KERN_INFO, ha,
2905                                   "Free DDB index not available\n"));
2906                 ret = QLA_ERROR;
2907                 goto exit_get_ddb_index;
2908         }
2909 
2910         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2911                 goto get_ddb_index;
2912 
2913         DEBUG2(ql4_printk(KERN_INFO, ha,
2914                           "Found a free DDB index at %d\n", tmp_ddb_index));
2915         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2916         if (ret == QLA_ERROR) {
2917                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2918                         ql4_printk(KERN_INFO, ha,
2919                                    "DDB index = %d not available trying next\n",
2920                                    tmp_ddb_index);
2921                         goto get_ddb_index;
2922                 }
2923                 DEBUG2(ql4_printk(KERN_INFO, ha,
2924                                   "Free FW DDB not available\n"));
2925         }
2926 
2927         *ddb_index = tmp_ddb_index;
2928 
2929 exit_get_ddb_index:
2930         return ret;
2931 }
2932 
2933 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2934                                    struct ddb_entry *ddb_entry,
2935                                    char *existing_ipaddr,
2936                                    char *user_ipaddr)
2937 {
2938         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2939         char formatted_ipaddr[DDB_IPADDR_LEN];
2940         int status = QLA_SUCCESS, ret = 0;
2941 
2942         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2943                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2944                                '\0', NULL);
2945                 if (ret == 0) {
2946                         status = QLA_ERROR;
2947                         goto out_match;
2948                 }
2949                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
2950         } else {
2951                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2952                                '\0', NULL);
2953                 if (ret == 0) {
2954                         status = QLA_ERROR;
2955                         goto out_match;
2956                 }
2957                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
2958         }
2959 
2960         if (strcmp(existing_ipaddr, formatted_ipaddr))
2961                 status = QLA_ERROR;
2962 
2963 out_match:
2964         return status;
2965 }
2966 
2967 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
2968                                       struct iscsi_cls_conn *cls_conn)
2969 {
2970         int idx = 0, max_ddbs, rval;
2971         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
2972         struct iscsi_session *sess, *existing_sess;
2973         struct iscsi_conn *conn, *existing_conn;
2974         struct ddb_entry *ddb_entry;
2975 
2976         sess = cls_sess->dd_data;
2977         conn = cls_conn->dd_data;
2978 
2979         if (sess->targetname == NULL ||
2980             conn->persistent_address == NULL ||
2981             conn->persistent_port == 0)
2982                 return QLA_ERROR;
2983 
2984         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
2985                                      MAX_DEV_DB_ENTRIES;
2986 
2987         for (idx = 0; idx < max_ddbs; idx++) {
2988                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
2989                 if (ddb_entry == NULL)
2990                         continue;
2991 
2992                 if (ddb_entry->ddb_type != FLASH_DDB)
2993                         continue;
2994 
2995                 existing_sess = ddb_entry->sess->dd_data;
2996                 existing_conn = ddb_entry->conn->dd_data;
2997 
2998                 if (existing_sess->targetname == NULL ||
2999                     existing_conn->persistent_address == NULL ||
3000                     existing_conn->persistent_port == 0)
3001                         continue;
3002 
3003                 DEBUG2(ql4_printk(KERN_INFO, ha,
3004                                   "IQN = %s User IQN = %s\n",
3005                                   existing_sess->targetname,
3006                                   sess->targetname));
3007 
3008                 DEBUG2(ql4_printk(KERN_INFO, ha,
3009                                   "IP = %s User IP = %s\n",
3010                                   existing_conn->persistent_address,
3011                                   conn->persistent_address));
3012 
3013                 DEBUG2(ql4_printk(KERN_INFO, ha,
3014                                   "Port = %d User Port = %d\n",
3015                                   existing_conn->persistent_port,
3016                                   conn->persistent_port));
3017 
3018                 if (strcmp(existing_sess->targetname, sess->targetname))
3019                         continue;
3020                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3021                                         existing_conn->persistent_address,
3022                                         conn->persistent_address);
3023                 if (rval == QLA_ERROR)
3024                         continue;
3025                 if (existing_conn->persistent_port != conn->persistent_port)
3026                         continue;
3027                 break;
3028         }
3029 
3030         if (idx == max_ddbs)
3031                 return QLA_ERROR;
3032 
3033         DEBUG2(ql4_printk(KERN_INFO, ha,
3034                           "Match found in fwdb sessions\n"));
3035         return QLA_SUCCESS;
3036 }
3037 
3038 static struct iscsi_cls_session *
3039 qla4xxx_session_create(struct iscsi_endpoint *ep,
3040                         uint16_t cmds_max, uint16_t qdepth,
3041                         uint32_t initial_cmdsn)
3042 {
3043         struct iscsi_cls_session *cls_sess;
3044         struct scsi_qla_host *ha;
3045         struct qla_endpoint *qla_ep;
3046         struct ddb_entry *ddb_entry;
3047         uint16_t ddb_index;
3048         struct iscsi_session *sess;
3049         struct sockaddr *dst_addr;
3050         int ret;
3051 
3052         if (!ep) {
3053                 printk(KERN_ERR "qla4xxx: missing ep.\n");
3054                 return NULL;
3055         }
3056 
3057         qla_ep = ep->dd_data;
3058         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
3059         ha = to_qla_host(qla_ep->host);
3060         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3061                           ha->host_no));
3062 
3063         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3064         if (ret == QLA_ERROR)
3065                 return NULL;
3066 
3067         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3068                                        cmds_max, sizeof(struct ddb_entry),
3069                                        sizeof(struct ql4_task_data),
3070                                        initial_cmdsn, ddb_index);
3071         if (!cls_sess)
3072                 return NULL;
3073 
3074         sess = cls_sess->dd_data;
3075         ddb_entry = sess->dd_data;
3076         ddb_entry->fw_ddb_index = ddb_index;
3077         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3078         ddb_entry->ha = ha;
3079         ddb_entry->sess = cls_sess;
3080         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3081         ddb_entry->ddb_change = qla4xxx_ddb_change;
3082         clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3083         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3084         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3085         ha->tot_ddbs++;
3086 
3087         return cls_sess;
3088 }
3089 
3090 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3091 {
3092         struct iscsi_session *sess;
3093         struct ddb_entry *ddb_entry;
3094         struct scsi_qla_host *ha;
3095         unsigned long flags, wtime;
3096         struct dev_db_entry *fw_ddb_entry = NULL;
3097         dma_addr_t fw_ddb_entry_dma;
3098         uint32_t ddb_state;
3099         int ret;
3100 
3101         sess = cls_sess->dd_data;
3102         ddb_entry = sess->dd_data;
3103         ha = ddb_entry->ha;
3104         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3105                           ha->host_no));
3106 
3107         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3108                                           &fw_ddb_entry_dma, GFP_KERNEL);
3109         if (!fw_ddb_entry) {
3110                 ql4_printk(KERN_ERR, ha,
3111                            "%s: Unable to allocate dma buffer\n", __func__);
3112                 goto destroy_session;
3113         }
3114 
3115         wtime = jiffies + (HZ * LOGOUT_TOV);
3116         do {
3117                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3118                                               fw_ddb_entry, fw_ddb_entry_dma,
3119                                               NULL, NULL, &ddb_state, NULL,
3120                                               NULL, NULL);
3121                 if (ret == QLA_ERROR)
3122                         goto destroy_session;
3123 
3124                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3125                     (ddb_state == DDB_DS_SESSION_FAILED))
3126                         goto destroy_session;
3127 
3128                 schedule_timeout_uninterruptible(HZ);
3129         } while ((time_after(wtime, jiffies)));
3130 
3131 destroy_session:
3132         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3133         if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
3134                 clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3135         spin_lock_irqsave(&ha->hardware_lock, flags);
3136         qla4xxx_free_ddb(ha, ddb_entry);
3137         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3138 
3139         iscsi_session_teardown(cls_sess);
3140 
3141         if (fw_ddb_entry)
3142                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3143                                   fw_ddb_entry, fw_ddb_entry_dma);
3144 }
3145 
3146 static struct iscsi_cls_conn *
3147 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3148 {
3149         struct iscsi_cls_conn *cls_conn;
3150         struct iscsi_session *sess;
3151         struct ddb_entry *ddb_entry;
3152         struct scsi_qla_host *ha;
3153 
3154         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3155                                     conn_idx);
3156         if (!cls_conn) {
3157                 pr_info("%s: Can not create connection for conn_idx = %u\n",
3158                         __func__, conn_idx);
3159                 return NULL;
3160         }
3161 
3162         sess = cls_sess->dd_data;
3163         ddb_entry = sess->dd_data;
3164         ddb_entry->conn = cls_conn;
3165 
3166         ha = ddb_entry->ha;
3167         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
3168                           conn_idx));
3169         return cls_conn;
3170 }
3171 
3172 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3173                              struct iscsi_cls_conn *cls_conn,
3174                              uint64_t transport_fd, int is_leading)
3175 {
3176         struct iscsi_conn *conn;
3177         struct qla_conn *qla_conn;
3178         struct iscsi_endpoint *ep;
3179         struct ddb_entry *ddb_entry;
3180         struct scsi_qla_host *ha;
3181         struct iscsi_session *sess;
3182 
3183         sess = cls_session->dd_data;
3184         ddb_entry = sess->dd_data;
3185         ha = ddb_entry->ha;
3186 
3187         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3188                           cls_session->sid, cls_conn->cid));
3189 
3190         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3191                 return -EINVAL;
3192         ep = iscsi_lookup_endpoint(transport_fd);
3193         conn = cls_conn->dd_data;
3194         qla_conn = conn->dd_data;
3195         qla_conn->qla_ep = ep->dd_data;
3196         return 0;
3197 }
3198 
3199 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3200 {
3201         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3202         struct iscsi_session *sess;
3203         struct ddb_entry *ddb_entry;
3204         struct scsi_qla_host *ha;
3205         struct dev_db_entry *fw_ddb_entry = NULL;
3206         dma_addr_t fw_ddb_entry_dma;
3207         uint32_t mbx_sts = 0;
3208         int ret = 0;
3209         int status = QLA_SUCCESS;
3210 
3211         sess = cls_sess->dd_data;
3212         ddb_entry = sess->dd_data;
3213         ha = ddb_entry->ha;
3214         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3215                           cls_sess->sid, cls_conn->cid));
3216 
3217         /* Check if we have  matching FW DDB, if yes then do not
3218          * login to this target. This could cause target to logout previous
3219          * connection
3220          */
3221         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3222         if (ret == QLA_SUCCESS) {
3223                 ql4_printk(KERN_INFO, ha,
3224                            "Session already exist in FW.\n");
3225                 ret = -EEXIST;
3226                 goto exit_conn_start;
3227         }
3228 
3229         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3230                                           &fw_ddb_entry_dma, GFP_KERNEL);
3231         if (!fw_ddb_entry) {
3232                 ql4_printk(KERN_ERR, ha,
3233                            "%s: Unable to allocate dma buffer\n", __func__);
3234                 ret = -ENOMEM;
3235                 goto exit_conn_start;
3236         }
3237 
3238         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3239         if (ret) {
3240                 /* If iscsid is stopped and started then no need to do
3241                 * set param again since ddb state will be already
3242                 * active and FW does not allow set ddb to an
3243                 * active session.
3244                 */
3245                 if (mbx_sts)
3246                         if (ddb_entry->fw_ddb_device_state ==
3247                                                 DDB_DS_SESSION_ACTIVE) {
3248                                 ddb_entry->unblock_sess(ddb_entry->sess);
3249                                 goto exit_set_param;
3250                         }
3251 
3252                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3253                            __func__, ddb_entry->fw_ddb_index);
3254                 goto exit_conn_start;
3255         }
3256 
3257         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3258         if (status == QLA_ERROR) {
3259                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3260                            sess->targetname);
3261                 ret = -EINVAL;
3262                 goto exit_conn_start;
3263         }
3264 
3265         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3266                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3267 
3268         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3269                       ddb_entry->fw_ddb_device_state));
3270 
3271 exit_set_param:
3272         ret = 0;
3273 
3274 exit_conn_start:
3275         if (fw_ddb_entry)
3276                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3277                                   fw_ddb_entry, fw_ddb_entry_dma);
3278         return ret;
3279 }
3280 
3281 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3282 {
3283         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3284         struct iscsi_session *sess;
3285         struct scsi_qla_host *ha;
3286         struct ddb_entry *ddb_entry;
3287         int options;
3288 
3289         sess = cls_sess->dd_data;
3290         ddb_entry = sess->dd_data;
3291         ha = ddb_entry->ha;
3292         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
3293                           cls_conn->cid));
3294 
3295         options = LOGOUT_OPTION_CLOSE_SESSION;
3296         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3297                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3298 }
3299 
3300 static void qla4xxx_task_work(struct work_struct *wdata)
3301 {
3302         struct ql4_task_data *task_data;
3303         struct scsi_qla_host *ha;
3304         struct passthru_status *sts;
3305         struct iscsi_task *task;
3306         struct iscsi_hdr *hdr;
3307         uint8_t *data;
3308         uint32_t data_len;
3309         struct iscsi_conn *conn;
3310         int hdr_len;
3311         itt_t itt;
3312 
3313         task_data = container_of(wdata, struct ql4_task_data, task_work);
3314         ha = task_data->ha;
3315         task = task_data->task;
3316         sts = &task_data->sts;
3317         hdr_len = sizeof(struct iscsi_hdr);
3318 
3319         DEBUG3(printk(KERN_INFO "Status returned\n"));
3320         DEBUG3(qla4xxx_dump_buffer(sts, 64));
3321         DEBUG3(printk(KERN_INFO "Response buffer"));
3322         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3323 
3324         conn = task->conn;
3325 
3326         switch (sts->completionStatus) {
3327         case PASSTHRU_STATUS_COMPLETE:
3328                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3329                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3330                 itt = sts->handle;
3331                 hdr->itt = itt;
3332                 data = task_data->resp_buffer + hdr_len;
3333                 data_len = task_data->resp_len - hdr_len;
3334                 iscsi_complete_pdu(conn, hdr, data, data_len);
3335                 break;
3336         default:
3337                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3338                            sts->completionStatus);
3339                 break;
3340         }
3341         return;
3342 }
3343 
3344 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3345 {
3346         struct ql4_task_data *task_data;
3347         struct iscsi_session *sess;
3348         struct ddb_entry *ddb_entry;
3349         struct scsi_qla_host *ha;
3350         int hdr_len;
3351 
3352         sess = task->conn->session;
3353         ddb_entry = sess->dd_data;
3354         ha = ddb_entry->ha;
3355         task_data = task->dd_data;
3356         memset(task_data, 0, sizeof(struct ql4_task_data));
3357 
3358         if (task->sc) {
3359                 ql4_printk(KERN_INFO, ha,
3360                            "%s: SCSI Commands not implemented\n", __func__);
3361                 return -EINVAL;
3362         }
3363 
3364         hdr_len = sizeof(struct iscsi_hdr);
3365         task_data->ha = ha;
3366         task_data->task = task;
3367 
3368         if (task->data_count) {
3369                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3370                                                      task->data_count,
3371                                                      PCI_DMA_TODEVICE);
3372         }
3373 
3374         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3375                       __func__, task->conn->max_recv_dlength, hdr_len));
3376 
3377         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3378         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3379                                                     task_data->resp_len,
3380                                                     &task_data->resp_dma,
3381                                                     GFP_ATOMIC);
3382         if (!task_data->resp_buffer)
3383                 goto exit_alloc_pdu;
3384 
3385         task_data->req_len = task->data_count + hdr_len;
3386         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3387                                                    task_data->req_len,
3388                                                    &task_data->req_dma,
3389                                                    GFP_ATOMIC);
3390         if (!task_data->req_buffer)
3391                 goto exit_alloc_pdu;
3392 
3393         task->hdr = task_data->req_buffer;
3394 
3395         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3396 
3397         return 0;
3398 
3399 exit_alloc_pdu:
3400         if (task_data->resp_buffer)
3401                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3402                                   task_data->resp_buffer, task_data->resp_dma);
3403 
3404         if (task_data->req_buffer)
3405                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3406                                   task_data->req_buffer, task_data->req_dma);
3407         return -ENOMEM;
3408 }
3409 
3410 static void qla4xxx_task_cleanup(struct iscsi_task *task)
3411 {
3412         struct ql4_task_data *task_data;
3413         struct iscsi_session *sess;
3414         struct ddb_entry *ddb_entry;
3415         struct scsi_qla_host *ha;
3416         int hdr_len;
3417 
3418         hdr_len = sizeof(struct iscsi_hdr);
3419         sess = task->conn->session;
3420         ddb_entry = sess->dd_data;
3421         ha = ddb_entry->ha;
3422         task_data = task->dd_data;
3423 
3424         if (task->data_count) {
3425                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3426                                  task->data_count, PCI_DMA_TODEVICE);
3427         }
3428 
3429         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3430                       __func__, task->conn->max_recv_dlength, hdr_len));
3431 
3432         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3433                           task_data->resp_buffer, task_data->resp_dma);
3434         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3435                           task_data->req_buffer, task_data->req_dma);
3436         return;
3437 }
3438 
3439 static int qla4xxx_task_xmit(struct iscsi_task *task)
3440 {
3441         struct scsi_cmnd *sc = task->sc;
3442         struct iscsi_session *sess = task->conn->session;
3443         struct ddb_entry *ddb_entry = sess->dd_data;
3444         struct scsi_qla_host *ha = ddb_entry->ha;
3445 
3446         if (!sc)
3447                 return qla4xxx_send_passthru0(task);
3448 
3449         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3450                    __func__);
3451         return -ENOSYS;
3452 }
3453 
3454 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3455                                          struct iscsi_bus_flash_conn *conn,
3456                                          struct dev_db_entry *fw_ddb_entry)
3457 {
3458         unsigned long options = 0;
3459         int rc = 0;
3460 
3461         options = le16_to_cpu(fw_ddb_entry->options);
3462         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3463         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3464                 rc = iscsi_switch_str_param(&sess->portal_type,
3465                                             PORTAL_TYPE_IPV6);
3466                 if (rc)
3467                         goto exit_copy;
3468         } else {
3469                 rc = iscsi_switch_str_param(&sess->portal_type,
3470                                             PORTAL_TYPE_IPV4);
3471                 if (rc)
3472                         goto exit_copy;
3473         }
3474 
3475         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3476                                               &options);
3477         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3478         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3479 
3480         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3481         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3482         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3483         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3484         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3485         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3486                                             &options);
3487         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3488         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3489         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3490         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3491                                              &options);
3492         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3493         sess->discovery_auth_optional =
3494                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3495         if (test_bit(ISCSIOPT_ERL1, &options))
3496                 sess->erl |= BIT_1;
3497         if (test_bit(ISCSIOPT_ERL0, &options))
3498                 sess->erl |= BIT_0;
3499 
3500         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3501         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3502         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3503         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3504         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3505                 conn->tcp_timer_scale |= BIT_3;
3506         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3507                 conn->tcp_timer_scale |= BIT_2;
3508         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3509                 conn->tcp_timer_scale |= BIT_1;
3510 
3511         conn->tcp_timer_scale >>= 1;
3512         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3513 
3514         options = le16_to_cpu(fw_ddb_entry->ip_options);
3515         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3516 
3517         conn->max_recv_dlength = BYTE_UNITS *
3518                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3519         conn->max_xmit_dlength = BYTE_UNITS *
3520                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3521         sess->first_burst = BYTE_UNITS *
3522                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3523         sess->max_burst = BYTE_UNITS *
3524                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3525         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3526         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3527         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3528         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3529         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3530         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3531         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3532         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3533         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3534         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3535         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3536         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3537         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3538         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3539         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3540         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3541 
3542         sess->default_taskmgmt_timeout =
3543                                 le16_to_cpu(fw_ddb_entry->def_timeout);
3544         conn->port = le16_to_cpu(fw_ddb_entry->port);
3545 
3546         options = le16_to_cpu(fw_ddb_entry->options);
3547         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3548         if (!conn->ipaddress) {
3549                 rc = -ENOMEM;
3550                 goto exit_copy;
3551         }
3552 
3553         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3554         if (!conn->redirect_ipaddr) {
3555                 rc = -ENOMEM;
3556                 goto exit_copy;
3557         }
3558 
3559         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3560         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3561 
3562         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3563                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3564 
3565                 conn->link_local_ipv6_addr = kmemdup(
3566                                         fw_ddb_entry->link_local_ipv6_addr,
3567                                         IPv6_ADDR_LEN, GFP_KERNEL);
3568                 if (!conn->link_local_ipv6_addr) {
3569                         rc = -ENOMEM;
3570                         goto exit_copy;
3571                 }
3572         } else {
3573                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3574         }
3575 
3576         if (fw_ddb_entry->iscsi_name[0]) {
3577                 rc = iscsi_switch_str_param(&sess->targetname,
3578                                             (char *)fw_ddb_entry->iscsi_name);
3579                 if (rc)
3580                         goto exit_copy;
3581         }
3582 
3583         if (fw_ddb_entry->iscsi_alias[0]) {
3584                 rc = iscsi_switch_str_param(&sess->targetalias,
3585                                             (char *)fw_ddb_entry->iscsi_alias);
3586                 if (rc)
3587                         goto exit_copy;
3588         }
3589 
3590         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3591 
3592 exit_copy:
3593         return rc;
3594 }
3595 
3596 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3597                                        struct iscsi_bus_flash_conn *conn,
3598                                        struct dev_db_entry *fw_ddb_entry)
3599 {
3600         uint16_t options;
3601         int rc = 0;
3602 
3603         options = le16_to_cpu(fw_ddb_entry->options);
3604         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3605         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3606                 options |= BIT_8;
3607         else
3608                 options &= ~BIT_8;
3609 
3610         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3611         SET_BITVAL(sess->discovery_sess, options, BIT_4);
3612         SET_BITVAL(sess->entry_state, options, BIT_3);
3613         fw_ddb_entry->options = cpu_to_le16(options);
3614 
3615         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3616         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3617         SET_BITVAL(conn->datadgst_en, options, BIT_12);
3618         SET_BITVAL(sess->imm_data_en, options, BIT_11);
3619         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3620         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3621         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3622         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3623         SET_BITVAL(conn->snack_req_en, options, BIT_6);
3624         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3625         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3626         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3627         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3628         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3629         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3630 
3631         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3632         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3633         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3634         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3635         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3636         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3637         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3638         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3639         fw_ddb_entry->tcp_options = cpu_to_le16(options);
3640 
3641         options = le16_to_cpu(fw_ddb_entry->ip_options);
3642         SET_BITVAL(conn->fragment_disable, options, BIT_4);
3643         fw_ddb_entry->ip_options = cpu_to_le16(options);
3644 
3645         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3646         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3647                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3648         fw_ddb_entry->iscsi_max_snd_data_seg_len =
3649                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3650         fw_ddb_entry->iscsi_first_burst_len =
3651                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
3652         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3653                                             BYTE_UNITS);
3654         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3655         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3656         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3657         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3658         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3659         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3660         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3661         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3662         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3663         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3664         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3665         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3666         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3667         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3668         fw_ddb_entry->port = cpu_to_le16(conn->port);
3669         fw_ddb_entry->def_timeout =
3670                                 cpu_to_le16(sess->default_taskmgmt_timeout);
3671 
3672         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3673                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3674         else
3675                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3676 
3677         if (conn->ipaddress)
3678                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3679                        sizeof(fw_ddb_entry->ip_addr));
3680 
3681         if (conn->redirect_ipaddr)
3682                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3683                        sizeof(fw_ddb_entry->tgt_addr));
3684 
3685         if (conn->link_local_ipv6_addr)
3686                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
3687                        conn->link_local_ipv6_addr,
3688                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
3689 
3690         if (sess->targetname)
3691                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3692                        sizeof(fw_ddb_entry->iscsi_name));
3693 
3694         if (sess->targetalias)
3695                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3696                        sizeof(fw_ddb_entry->iscsi_alias));
3697 
3698         COPY_ISID(fw_ddb_entry->isid, sess->isid);
3699 
3700         return rc;
3701 }
3702 
3703 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3704                                              struct iscsi_session *sess,
3705                                              struct dev_db_entry *fw_ddb_entry)
3706 {
3707         unsigned long options = 0;
3708         uint16_t ddb_link;
3709         uint16_t disc_parent;
3710         char ip_addr[DDB_IPADDR_LEN];
3711 
3712         options = le16_to_cpu(fw_ddb_entry->options);
3713         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3714         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3715                                               &options);
3716         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3717 
3718         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3719         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3720         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3721         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3722         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3723         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3724                                             &options);
3725         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3726         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3727         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3728                                              &options);
3729         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3730         sess->discovery_auth_optional =
3731                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3732         if (test_bit(ISCSIOPT_ERL1, &options))
3733                 sess->erl |= BIT_1;
3734         if (test_bit(ISCSIOPT_ERL0, &options))
3735                 sess->erl |= BIT_0;
3736 
3737         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3738         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3739         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3740         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3741         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3742                 conn->tcp_timer_scale |= BIT_3;
3743         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3744                 conn->tcp_timer_scale |= BIT_2;
3745         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3746                 conn->tcp_timer_scale |= BIT_1;
3747 
3748         conn->tcp_timer_scale >>= 1;
3749         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3750 
3751         options = le16_to_cpu(fw_ddb_entry->ip_options);
3752         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3753 
3754         conn->max_recv_dlength = BYTE_UNITS *
3755                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3756         conn->max_xmit_dlength = BYTE_UNITS *
3757                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3758         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3759         sess->first_burst = BYTE_UNITS *
3760                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3761         sess->max_burst = BYTE_UNITS *
3762                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3763         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3764         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3765         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3766         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3767         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3768         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3769         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3770         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3771         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3772         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3773         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3774         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3775         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3776 
3777         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3778         if (ddb_link == DDB_ISNS)
3779                 disc_parent = ISCSI_DISC_PARENT_ISNS;
3780         else if (ddb_link == DDB_NO_LINK)
3781                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3782         else if (ddb_link < MAX_DDB_ENTRIES)
3783                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3784         else
3785                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3786 
3787         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3788                         iscsi_get_discovery_parent_name(disc_parent), 0);
3789 
3790         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3791                         (char *)fw_ddb_entry->iscsi_alias, 0);
3792 
3793         options = le16_to_cpu(fw_ddb_entry->options);
3794         if (options & DDB_OPT_IPV6_DEVICE) {
3795                 memset(ip_addr, 0, sizeof(ip_addr));
3796                 sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3797                 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3798                                 (char *)ip_addr, 0);
3799         }
3800 }
3801 
3802 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3803                                      struct dev_db_entry *fw_ddb_entry,
3804                                      struct iscsi_cls_session *cls_sess,
3805                                      struct iscsi_cls_conn *cls_conn)
3806 {
3807         int buflen = 0;
3808         struct iscsi_session *sess;
3809         struct ddb_entry *ddb_entry;
3810         struct ql4_chap_table chap_tbl;
3811         struct iscsi_conn *conn;
3812         char ip_addr[DDB_IPADDR_LEN];
3813         uint16_t options = 0;
3814 
3815         sess = cls_sess->dd_data;
3816         ddb_entry = sess->dd_data;
3817         conn = cls_conn->dd_data;
3818         memset(&chap_tbl, 0, sizeof(chap_tbl));
3819 
3820         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3821 
3822         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3823 
3824         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3825         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3826 
3827         memset(ip_addr, 0, sizeof(ip_addr));
3828         options = le16_to_cpu(fw_ddb_entry->options);
3829         if (options & DDB_OPT_IPV6_DEVICE) {
3830                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3831 
3832                 memset(ip_addr, 0, sizeof(ip_addr));
3833                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3834         } else {
3835                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3836                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3837         }
3838 
3839         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3840                         (char *)ip_addr, buflen);
3841         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3842                         (char *)fw_ddb_entry->iscsi_name, buflen);
3843         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3844                         (char *)ha->name_string, buflen);
3845 
3846         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3847                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3848                                                    chap_tbl.secret,
3849                                                    ddb_entry->chap_tbl_idx)) {
3850                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3851                                         (char *)chap_tbl.name,
3852                                         strlen((char *)chap_tbl.name));
3853                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3854                                         (char *)chap_tbl.secret,
3855                                         chap_tbl.secret_len);
3856                 }
3857         }
3858 }
3859 
3860 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3861                                              struct ddb_entry *ddb_entry)
3862 {
3863         struct iscsi_cls_session *cls_sess;
3864         struct iscsi_cls_conn *cls_conn;
3865         uint32_t ddb_state;
3866         dma_addr_t fw_ddb_entry_dma;
3867         struct dev_db_entry *fw_ddb_entry;
3868 
3869         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3870                                           &fw_ddb_entry_dma, GFP_KERNEL);
3871         if (!fw_ddb_entry) {
3872                 ql4_printk(KERN_ERR, ha,
3873                            "%s: Unable to allocate dma buffer\n", __func__);
3874                 goto exit_session_conn_fwddb_param;
3875         }
3876 
3877         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3878                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3879                                     NULL, NULL, NULL) == QLA_ERROR) {
3880                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3881                                   "get_ddb_entry for fw_ddb_index %d\n",
3882                                   ha->host_no, __func__,
3883                                   ddb_entry->fw_ddb_index));
3884                 goto exit_session_conn_fwddb_param;
3885         }
3886 
3887         cls_sess = ddb_entry->sess;
3888 
3889         cls_conn = ddb_entry->conn;
3890 
3891         /* Update params */
3892         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3893 
3894 exit_session_conn_fwddb_param:
3895         if (fw_ddb_entry)
3896                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3897                                   fw_ddb_entry, fw_ddb_entry_dma);
3898 }
3899 
3900 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3901                                        struct ddb_entry *ddb_entry)
3902 {
3903         struct iscsi_cls_session *cls_sess;
3904         struct iscsi_cls_conn *cls_conn;
3905         struct iscsi_session *sess;
3906         struct iscsi_conn *conn;
3907         uint32_t ddb_state;
3908         dma_addr_t fw_ddb_entry_dma;
3909         struct dev_db_entry *fw_ddb_entry;
3910 
3911         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3912                                           &fw_ddb_entry_dma, GFP_KERNEL);
3913         if (!fw_ddb_entry) {
3914                 ql4_printk(KERN_ERR, ha,
3915                            "%s: Unable to allocate dma buffer\n", __func__);
3916                 goto exit_session_conn_param;
3917         }
3918 
3919         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3920                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3921                                     NULL, NULL, NULL) == QLA_ERROR) {
3922                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3923                                   "get_ddb_entry for fw_ddb_index %d\n",
3924                                   ha->host_no, __func__,
3925                                   ddb_entry->fw_ddb_index));
3926                 goto exit_session_conn_param;
3927         }
3928 
3929         cls_sess = ddb_entry->sess;
3930         sess = cls_sess->dd_data;
3931 
3932         cls_conn = ddb_entry->conn;
3933         conn = cls_conn->dd_data;
3934 
3935         /* Update timers after login */
3936         ddb_entry->default_relogin_timeout =
3937                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3938                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3939                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3940         ddb_entry->default_time2wait =
3941                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3942 
3943         /* Update params */
3944         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3945         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3946 
3947         memcpy(sess->initiatorname, ha->name_string,
3948                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3949 
3950 exit_session_conn_param:
3951         if (fw_ddb_entry)
3952                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3953                                   fw_ddb_entry, fw_ddb_entry_dma);
3954 }
3955 
3956 /*
3957  * Timer routines
3958  */
3959 
3960 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
3961                                 unsigned long interval)
3962 {
3963         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
3964                      __func__, ha->host->host_no));
3965         init_timer(&ha->timer);
3966         ha->timer.expires = jiffies + interval * HZ;
3967         ha->timer.data = (unsigned long)ha;
3968         ha->timer.function = (void (*)(unsigned long))func;
3969         add_timer(&ha->timer);
3970         ha->timer_active = 1;
3971 }
3972 
3973 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
3974 {
3975         del_timer_sync(&ha->timer);
3976         ha->timer_active = 0;
3977 }
3978 
3979 /***
3980  * qla4xxx_mark_device_missing - blocks the session
3981  * @cls_session: Pointer to the session to be blocked
3982  * @ddb_entry: Pointer to device database entry
3983  *
3984  * This routine marks a device missing and close connection.
3985  **/
3986 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
3987 {
3988         iscsi_block_session(cls_session);
3989 }
3990 
3991 /**
3992  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
3993  * @ha: Pointer to host adapter structure.
3994  *
3995  * This routine marks a device missing and resets the relogin retry count.
3996  **/
3997 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
3998 {
3999         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
4000 }
4001 
4002 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
4003                                        struct ddb_entry *ddb_entry,
4004                                        struct scsi_cmnd *cmd)
4005 {
4006         struct srb *srb;
4007 
4008         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
4009         if (!srb)
4010                 return srb;
4011 
4012         kref_init(&srb->srb_ref);
4013         srb->ha = ha;
4014         srb->ddb = ddb_entry;
4015         srb->cmd = cmd;
4016         srb->flags = 0;
4017         CMD_SP(cmd) = (void *)srb;
4018 
4019         return srb;
4020 }
4021 
4022 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4023 {
4024         struct scsi_cmnd *cmd = srb->cmd;
4025 
4026         if (srb->flags & SRB_DMA_VALID) {
4027                 scsi_dma_unmap(cmd);
4028                 srb->flags &= ~SRB_DMA_VALID;
4029         }
4030         CMD_SP(cmd) = NULL;
4031 }
4032 
4033 void qla4xxx_srb_compl(struct kref *ref)
4034 {
4035         struct srb *srb = container_of(ref, struct srb, srb_ref);
4036         struct scsi_cmnd *cmd = srb->cmd;
4037         struct scsi_qla_host *ha = srb->ha;
4038 
4039         qla4xxx_srb_free_dma(ha, srb);
4040 
4041         mempool_free(srb, ha->srb_mempool);
4042 
4043         cmd->scsi_done(cmd);
4044 }
4045 
4046 /**
4047  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4048  * @host: scsi host
4049  * @cmd: Pointer to Linux's SCSI command structure
4050  *
4051  * Remarks:
4052  * This routine is invoked by Linux to send a SCSI command to the driver.
4053  * The mid-level driver tries to ensure that queuecommand never gets
4054  * invoked concurrently with itself or the interrupt handler (although
4055  * the interrupt handler may call this routine as part of request-
4056  * completion handling).   Unfortunely, it sometimes calls the scheduler
4057  * in interrupt context which is a big NO! NO!.
4058  **/
4059 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4060 {
4061         struct scsi_qla_host *ha = to_qla_host(host);
4062         struct ddb_entry *ddb_entry = cmd->device->hostdata;
4063         struct iscsi_cls_session *sess = ddb_entry->sess;
4064         struct srb *srb;
4065         int rval;
4066 
4067         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4068                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4069                         cmd->result = DID_NO_CONNECT << 16;
4070                 else
4071                         cmd->result = DID_REQUEUE << 16;
4072                 goto qc_fail_command;
4073         }
4074 
4075         if (!sess) {
4076                 cmd->result = DID_IMM_RETRY << 16;
4077                 goto qc_fail_command;
4078         }
4079 
4080         rval = iscsi_session_chkready(sess);
4081         if (rval) {
4082                 cmd->result = rval;
4083                 goto qc_fail_command;
4084         }
4085 
4086         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4087             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4088             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4089             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4090             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4091             !test_bit(AF_ONLINE, &ha->flags) ||
4092             !test_bit(AF_LINK_UP, &ha->flags) ||
4093             test_bit(AF_LOOPBACK, &ha->flags) ||
4094             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4095             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4096             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4097                 goto qc_host_busy;
4098 
4099         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4100         if (!srb)
4101                 goto qc_host_busy;
4102 
4103         rval = qla4xxx_send_command_to_isp(ha, srb);
4104         if (rval != QLA_SUCCESS)
4105                 goto qc_host_busy_free_sp;
4106 
4107         return 0;
4108 
4109 qc_host_busy_free_sp:
4110         qla4xxx_srb_free_dma(ha, srb);
4111         mempool_free(srb, ha->srb_mempool);
4112 
4113 qc_host_busy:
4114         return SCSI_MLQUEUE_HOST_BUSY;
4115 
4116 qc_fail_command:
4117         cmd->scsi_done(cmd);
4118 
4119         return 0;
4120 }
4121 
4122 /**
4123  * qla4xxx_mem_free - frees memory allocated to adapter
4124  * @ha: Pointer to host adapter structure.
4125  *
4126  * Frees memory previously allocated by qla4xxx_mem_alloc
4127  **/
4128 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4129 {
4130         if (ha->queues)
4131                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4132                                   ha->queues_dma);
4133 
4134          if (ha->fw_dump)
4135                 vfree(ha->fw_dump);
4136 
4137         ha->queues_len = 0;
4138         ha->queues = NULL;
4139         ha->queues_dma = 0;
4140         ha->request_ring = NULL;
4141         ha->request_dma = 0;
4142         ha->response_ring = NULL;
4143         ha->response_dma = 0;
4144         ha->shadow_regs = NULL;
4145         ha->shadow_regs_dma = 0;
4146         ha->fw_dump = NULL;
4147         ha->fw_dump_size = 0;
4148 
4149         /* Free srb pool. */
4150         if (ha->srb_mempool)
4151                 mempool_destroy(ha->srb_mempool);
4152 
4153         ha->srb_mempool = NULL;
4154 
4155         if (ha->chap_dma_pool)
4156                 dma_pool_destroy(ha->chap_dma_pool);
4157 
4158         if (ha->chap_list)
4159                 vfree(ha->chap_list);
4160         ha->chap_list = NULL;
4161 
4162         if (ha->fw_ddb_dma_pool)
4163                 dma_pool_destroy(ha->fw_ddb_dma_pool);
4164 
4165         /* release io space registers  */
4166         if (is_qla8022(ha)) {
4167                 if (ha->nx_pcibase)
4168                         iounmap(
4169                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4170         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4171                 if (ha->nx_pcibase)
4172                         iounmap(
4173                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4174         } else if (ha->reg) {
4175                 iounmap(ha->reg);
4176         }
4177 
4178         if (ha->reset_tmplt.buff)
4179                 vfree(ha->reset_tmplt.buff);
4180 
4181         pci_release_regions(ha->pdev);
4182 }
4183 
4184 /**
4185  * qla4xxx_mem_alloc - allocates memory for use by adapter.
4186  * @ha: Pointer to host adapter structure
4187  *
4188  * Allocates DMA memory for request and response queues. Also allocates memory
4189  * for srbs.
4190  **/
4191 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4192 {
4193         unsigned long align;
4194 
4195         /* Allocate contiguous block of DMA memory for queues. */
4196         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4197                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4198                           sizeof(struct shadow_regs) +
4199                           MEM_ALIGN_VALUE +
4200                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4201         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
4202                                         &ha->queues_dma, GFP_KERNEL);
4203         if (ha->queues == NULL) {
4204                 ql4_printk(KERN_WARNING, ha,
4205                     "Memory Allocation failed - queues.\n");
4206 
4207                 goto mem_alloc_error_exit;
4208         }
4209         memset(ha->queues, 0, ha->queues_len);
4210 
4211         /*
4212          * As per RISC alignment requirements -- the bus-address must be a
4213          * multiple of the request-ring size (in bytes).
4214          */
4215         align = 0;
4216         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4217                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4218                                            (MEM_ALIGN_VALUE - 1));
4219 
4220         /* Update request and response queue pointers. */
4221         ha->request_dma = ha->queues_dma + align;
4222         ha->request_ring = (struct queue_entry *) (ha->queues + align);
4223         ha->response_dma = ha->queues_dma + align +
4224                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4225         ha->response_ring = (struct queue_entry *) (ha->queues + align +
4226                                                     (REQUEST_QUEUE_DEPTH *
4227                                                      QUEUE_SIZE));
4228         ha->shadow_regs_dma = ha->queues_dma + align +
4229                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4230                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4231         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4232                                                   (REQUEST_QUEUE_DEPTH *
4233                                                    QUEUE_SIZE) +
4234                                                   (RESPONSE_QUEUE_DEPTH *
4235                                                    QUEUE_SIZE));
4236 
4237         /* Allocate memory for srb pool. */
4238         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4239                                          mempool_free_slab, srb_cachep);
4240         if (ha->srb_mempool == NULL) {
4241                 ql4_printk(KERN_WARNING, ha,
4242                     "Memory Allocation failed - SRB Pool.\n");
4243 
4244                 goto mem_alloc_error_exit;
4245         }
4246 
4247         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4248                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
4249 
4250         if (ha->chap_dma_pool == NULL) {
4251                 ql4_printk(KERN_WARNING, ha,
4252                     "%s: chap_dma_pool allocation failed..\n", __func__);
4253                 goto mem_alloc_error_exit;
4254         }
4255 
4256         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4257                                               DDB_DMA_BLOCK_SIZE, 8, 0);
4258 
4259         if (ha->fw_ddb_dma_pool == NULL) {
4260                 ql4_printk(KERN_WARNING, ha,
4261                            "%s: fw_ddb_dma_pool allocation failed..\n",
4262                            __func__);
4263                 goto mem_alloc_error_exit;
4264         }
4265 
4266         return QLA_SUCCESS;
4267 
4268 mem_alloc_error_exit:
4269         qla4xxx_mem_free(ha);
4270         return QLA_ERROR;
4271 }
4272 
4273 /**
4274  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4275  * @ha: adapter block pointer.
4276  *
4277  * Note: The caller should not hold the idc lock.
4278  **/
4279 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4280 {
4281         uint32_t temp, temp_state, temp_val;
4282         int status = QLA_SUCCESS;
4283 
4284         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4285 
4286         temp_state = qla82xx_get_temp_state(temp);
4287         temp_val = qla82xx_get_temp_val(temp);
4288 
4289         if (temp_state == QLA82XX_TEMP_PANIC) {
4290                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4291                            " exceeds maximum allowed. Hardware has been shut"
4292                            " down.\n", temp_val);
4293                 status = QLA_ERROR;
4294         } else if (temp_state == QLA82XX_TEMP_WARN) {
4295                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
4296                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4297                                    " degrees C exceeds operating range."
4298                                    " Immediate action needed.\n", temp_val);
4299         } else {
4300                 if (ha->temperature == QLA82XX_TEMP_WARN)
4301                         ql4_printk(KERN_INFO, ha, "Device temperature is"
4302                                    " now %d degrees C in normal range.\n",
4303                                    temp_val);
4304         }
4305         ha->temperature = temp_state;
4306         return status;
4307 }
4308 
4309 /**
4310  * qla4_8xxx_check_fw_alive  - Check firmware health
4311  * @ha: Pointer to host adapter structure.
4312  *
4313  * Context: Interrupt
4314  **/
4315 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4316 {
4317         uint32_t fw_heartbeat_counter;
4318         int status = QLA_SUCCESS;
4319 
4320         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4321                                                    QLA8XXX_PEG_ALIVE_COUNTER);
4322         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4323         if (fw_heartbeat_counter == 0xffffffff) {
4324                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4325                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4326                     ha->host_no, __func__));
4327                 return status;
4328         }
4329 
4330         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4331                 ha->seconds_since_last_heartbeat++;
4332                 /* FW not alive after 2 seconds */
4333                 if (ha->seconds_since_last_heartbeat == 2) {
4334                         ha->seconds_since_last_heartbeat = 0;
4335                         qla4_8xxx_dump_peg_reg(ha);
4336                         status = QLA_ERROR;
4337                 }
4338         } else
4339                 ha->seconds_since_last_heartbeat = 0;
4340 
4341         ha->fw_heartbeat_counter = fw_heartbeat_counter;
4342         return status;
4343 }
4344 
4345 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4346 {
4347         uint32_t halt_status;
4348         int halt_status_unrecoverable = 0;
4349 
4350         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4351 
4352         if (is_qla8022(ha)) {
4353                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4354                            __func__);
4355                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4356                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4357                                 CRB_NIU_XG_PAUSE_CTL_P1);
4358 
4359                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4360                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4361                                    __func__);
4362                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
4363                         halt_status_unrecoverable = 1;
4364         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4365                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4366                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4367                                    __func__);
4368                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4369                         halt_status_unrecoverable = 1;
4370         }
4371 
4372         /*
4373          * Since we cannot change dev_state in interrupt context,
4374          * set appropriate DPC flag then wakeup DPC
4375          */
4376         if (halt_status_unrecoverable) {
4377                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4378         } else {
4379                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4380                            __func__);
4381                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4382         }
4383         qla4xxx_mailbox_premature_completion(ha);
4384         qla4xxx_wake_dpc(ha);
4385 }
4386 
4387 /**
4388  * qla4_8xxx_watchdog - Poll dev state
4389  * @ha: Pointer to host adapter structure.
4390  *
4391  * Context: Interrupt
4392  **/
4393 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4394 {
4395         uint32_t dev_state;
4396         uint32_t idc_ctrl;
4397 
4398         if (is_qla8032(ha) &&
4399             (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
4400                 WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
4401                           __func__, ha->func_num);
4402 
4403         /* don't poll if reset is going on */
4404         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4405             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4406             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4407                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4408 
4409                 if (qla4_8xxx_check_temp(ha)) {
4410                         if (is_qla8022(ha)) {
4411                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4412                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4413                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4414                                                 CRB_NIU_XG_PAUSE_CTL_P1);
4415                         }
4416                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4417                         qla4xxx_wake_dpc(ha);
4418                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4419                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4420 
4421                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4422                                    __func__);
4423 
4424                         if (is_qla8032(ha) || is_qla8042(ha)) {
4425                                 idc_ctrl = qla4_83xx_rd_reg(ha,
4426                                                         QLA83XX_IDC_DRV_CTRL);
4427                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4428                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4429                                                    __func__);
4430                                         qla4xxx_mailbox_premature_completion(
4431                                                                             ha);
4432                                 }
4433                         }
4434 
4435                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
4436                             (is_qla8022(ha) && !ql4xdontresethba)) {
4437                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4438                                 qla4xxx_wake_dpc(ha);
4439                         }
4440                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4441                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4442                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4443                             __func__);
4444                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4445                         qla4xxx_wake_dpc(ha);
4446                 } else  {
4447                         /* Check firmware health */
4448                         if (qla4_8xxx_check_fw_alive(ha))
4449                                 qla4_8xxx_process_fw_error(ha);
4450                 }
4451         }
4452 }
4453 
4454 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4455 {
4456         struct iscsi_session *sess;
4457         struct ddb_entry *ddb_entry;
4458         struct scsi_qla_host *ha;
4459 
4460         sess = cls_sess->dd_data;
4461         ddb_entry = sess->dd_data;
4462         ha = ddb_entry->ha;
4463 
4464         if (!(ddb_entry->ddb_type == FLASH_DDB))
4465                 return;
4466 
4467         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4468             !iscsi_is_session_online(cls_sess)) {
4469                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4470                     INVALID_ENTRY) {
4471                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4472                                         0) {
4473                                 atomic_set(&ddb_entry->retry_relogin_timer,
4474                                            INVALID_ENTRY);
4475                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4476                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4477                                 DEBUG2(ql4_printk(KERN_INFO, ha,
4478                                        "%s: index [%d] login device\n",
4479                                         __func__, ddb_entry->fw_ddb_index));
4480                         } else
4481                                 atomic_dec(&ddb_entry->retry_relogin_timer);
4482                 }
4483         }
4484 
4485         /* Wait for relogin to timeout */
4486         if (atomic_read(&ddb_entry->relogin_timer) &&
4487             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4488                 /*
4489                  * If the relogin times out and the device is
4490                  * still NOT ONLINE then try and relogin again.
4491                  */
4492                 if (!iscsi_is_session_online(cls_sess)) {
4493                         /* Reset retry relogin timer */
4494                         atomic_inc(&ddb_entry->relogin_retry_count);
4495                         DEBUG2(ql4_printk(KERN_INFO, ha,
4496                                 "%s: index[%d] relogin timed out-retrying"
4497                                 " relogin (%d), retry (%d)\n", __func__,
4498                                 ddb_entry->fw_ddb_index,
4499                                 atomic_read(&ddb_entry->relogin_retry_count),
4500                                 ddb_entry->default_time2wait + 4));
4501                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4502                         atomic_set(&ddb_entry->retry_relogin_timer,
4503                                    ddb_entry->default_time2wait + 4);
4504                 }
4505         }
4506 }
4507 
4508 /**
4509  * qla4xxx_timer - checks every second for work to do.
4510  * @ha: Pointer to host adapter structure.
4511  **/
4512 static void qla4xxx_timer(struct scsi_qla_host *ha)
4513 {
4514         int start_dpc = 0;
4515         uint16_t w;
4516 
4517         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4518 
4519         /* If we are in the middle of AER/EEH processing
4520          * skip any processing and reschedule the timer
4521          */
4522         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4523                 mod_timer(&ha->timer, jiffies + HZ);
4524                 return;
4525         }
4526 
4527         /* Hardware read to trigger an EEH error during mailbox waits. */
4528         if (!pci_channel_offline(ha->pdev))
4529                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4530 
4531         if (is_qla80XX(ha))
4532                 qla4_8xxx_watchdog(ha);
4533 
4534         if (is_qla40XX(ha)) {
4535                 /* Check for heartbeat interval. */
4536                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4537                     ha->heartbeat_interval != 0) {
4538                         ha->seconds_since_last_heartbeat++;
4539                         if (ha->seconds_since_last_heartbeat >
4540                             ha->heartbeat_interval + 2)
4541                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4542                 }
4543         }
4544 
4545         /* Process any deferred work. */
4546         if (!list_empty(&ha->work_list))
4547                 start_dpc++;
4548 
4549         /* Wakeup the dpc routine for this adapter, if needed. */
4550         if (start_dpc ||
4551              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4552              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4553              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4554              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4555              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4556              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4557              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4558              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4559              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4560              test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4561              test_bit(DPC_AEN, &ha->dpc_flags)) {
4562                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4563                               " - dpc flags = 0x%lx\n",
4564                               ha->host_no, __func__, ha->dpc_flags));
4565                 qla4xxx_wake_dpc(ha);
4566         }
4567 
4568         /* Reschedule timer thread to call us back in one second */
4569         mod_timer(&ha->timer, jiffies + HZ);
4570 
4571         DEBUG2(ha->seconds_since_last_intr++);
4572 }
4573 
4574 /**
4575  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4576  * @ha: Pointer to host adapter structure.
4577  *
4578  * This routine stalls the driver until all outstanding commands are returned.
4579  * Caller must release the Hardware Lock prior to calling this routine.
4580  **/
4581 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4582 {
4583         uint32_t index = 0;
4584         unsigned long flags;
4585         struct scsi_cmnd *cmd;
4586         unsigned long wtime;
4587         uint32_t wtmo;
4588 
4589         if (is_qla40XX(ha))
4590                 wtmo = WAIT_CMD_TOV;
4591         else
4592                 wtmo = ha->nx_reset_timeout / 2;
4593 
4594         wtime = jiffies + (wtmo * HZ);
4595 
4596         DEBUG2(ql4_printk(KERN_INFO, ha,
4597                           "Wait up to %u seconds for cmds to complete\n",
4598                           wtmo));
4599 
4600         while (!time_after_eq(jiffies, wtime)) {
4601                 spin_lock_irqsave(&ha->hardware_lock, flags);
4602                 /* Find a command that hasn't completed. */
4603                 for (index = 0; index < ha->host->can_queue; index++) {
4604                         cmd = scsi_host_find_tag(ha->host, index);
4605                         /*
4606                          * We cannot just check if the index is valid,
4607                          * becase if we are run from the scsi eh, then
4608                          * the scsi/block layer is going to prevent
4609                          * the tag from being released.
4610                          */
4611                         if (cmd != NULL && CMD_SP(cmd))
4612                                 break;
4613                 }
4614                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4615 
4616                 /* If No Commands are pending, wait is complete */
4617                 if (index == ha->host->can_queue)
4618                         return QLA_SUCCESS;
4619 
4620                 msleep(1000);
4621         }
4622         /* If we timed out on waiting for commands to come back
4623          * return ERROR. */
4624         return QLA_ERROR;
4625 }
4626 
4627 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4628 {
4629         uint32_t ctrl_status;
4630         unsigned long flags = 0;
4631 
4632         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4633 
4634         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4635                 return QLA_ERROR;
4636 
4637         spin_lock_irqsave(&ha->hardware_lock, flags);
4638 
4639         /*
4640          * If the SCSI Reset Interrupt bit is set, clear it.
4641          * Otherwise, the Soft Reset won't work.
4642          */
4643         ctrl_status = readw(&ha->reg->ctrl_status);
4644         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4645                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4646 
4647         /* Issue Soft Reset */
4648         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4649         readl(&ha->reg->ctrl_status);
4650 
4651         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4652         return QLA_SUCCESS;
4653 }
4654 
4655 /**
4656  * qla4xxx_soft_reset - performs soft reset.
4657  * @ha: Pointer to host adapter structure.
4658  **/
4659 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4660 {
4661         uint32_t max_wait_time;
4662         unsigned long flags = 0;
4663         int status;
4664         uint32_t ctrl_status;
4665 
4666         status = qla4xxx_hw_reset(ha);
4667         if (status != QLA_SUCCESS)
4668                 return status;
4669 
4670         status = QLA_ERROR;
4671         /* Wait until the Network Reset Intr bit is cleared */
4672         max_wait_time = RESET_INTR_TOV;
4673         do {
4674                 spin_lock_irqsave(&ha->hardware_lock, flags);
4675                 ctrl_status = readw(&ha->reg->ctrl_status);
4676                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4677 
4678                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4679                         break;
4680 
4681                 msleep(1000);
4682         } while ((--max_wait_time));
4683 
4684         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4685                 DEBUG2(printk(KERN_WARNING
4686                               "scsi%ld: Network Reset Intr not cleared by "
4687                               "Network function, clearing it now!\n",
4688                               ha->host_no));
4689                 spin_lock_irqsave(&ha->hardware_lock, flags);
4690                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4691                 readl(&ha->reg->ctrl_status);
4692                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4693         }
4694 
4695         /* Wait until the firmware tells us the Soft Reset is done */
4696         max_wait_time = SOFT_RESET_TOV;
4697         do {
4698                 spin_lock_irqsave(&ha->hardware_lock, flags);
4699                 ctrl_status = readw(&ha->reg->ctrl_status);
4700                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4701 
4702                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4703                         status = QLA_SUCCESS;
4704                         break;
4705                 }
4706 
4707                 msleep(1000);
4708         } while ((--max_wait_time));
4709 
4710         /*
4711          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4712          * after the soft reset has taken place.
4713          */
4714         spin_lock_irqsave(&ha->hardware_lock, flags);
4715         ctrl_status = readw(&ha->reg->ctrl_status);
4716         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4717                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4718                 readl(&ha->reg->ctrl_status);
4719         }
4720         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4721 
4722         /* If soft reset fails then most probably the bios on other
4723          * function is also enabled.
4724          * Since the initialization is sequential the other fn
4725          * wont be able to acknowledge the soft reset.
4726          * Issue a force soft reset to workaround this scenario.
4727          */
4728         if (max_wait_time == 0) {
4729                 /* Issue Force Soft Reset */
4730                 spin_lock_irqsave(&ha->hardware_lock, flags);
4731                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4732                 readl(&ha->reg->ctrl_status);
4733                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4734                 /* Wait until the firmware tells us the Soft Reset is done */
4735                 max_wait_time = SOFT_RESET_TOV;
4736                 do {
4737                         spin_lock_irqsave(&ha->hardware_lock, flags);
4738                         ctrl_status = readw(&ha->reg->ctrl_status);
4739                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4740 
4741                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4742                                 status = QLA_SUCCESS;
4743                                 break;
4744                         }
4745 
4746                         msleep(1000);
4747                 } while ((--max_wait_time));
4748         }
4749 
4750         return status;
4751 }
4752 
4753 /**
4754  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4755  * @ha: Pointer to host adapter structure.
4756  * @res: returned scsi status
4757  *
4758  * This routine is called just prior to a HARD RESET to return all
4759  * outstanding commands back to the Operating System.
4760  * Caller should make sure that the following locks are released
4761  * before this calling routine: Hardware lock, and io_request_lock.
4762  **/
4763 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4764 {
4765         struct srb *srb;
4766         int i;
4767         unsigned long flags;
4768 
4769         spin_lock_irqsave(&ha->hardware_lock, flags);
4770         for (i = 0; i < ha->host->can_queue; i++) {
4771                 srb = qla4xxx_del_from_active_array(ha, i);
4772                 if (srb != NULL) {
4773                         srb->cmd->result = res;
4774                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4775                 }
4776         }
4777         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4778 }
4779 
4780 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4781 {
4782         clear_bit(AF_ONLINE, &ha->flags);
4783 
4784         /* Disable the board */
4785         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4786 
4787         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4788         qla4xxx_mark_all_devices_missing(ha);
4789         clear_bit(AF_INIT_DONE, &ha->flags);
4790 }
4791 
4792 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4793 {
4794         struct iscsi_session *sess;
4795         struct ddb_entry *ddb_entry;
4796 
4797         sess = cls_session->dd_data;
4798         ddb_entry = sess->dd_data;
4799         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4800 
4801         if (ddb_entry->ddb_type == FLASH_DDB)
4802                 iscsi_block_session(ddb_entry->sess);
4803         else
4804                 iscsi_session_failure(cls_session->dd_data,
4805                                       ISCSI_ERR_CONN_FAILED);
4806 }
4807 
4808 /**
4809  * qla4xxx_recover_adapter - recovers adapter after a fatal error
4810  * @ha: Pointer to host adapter structure.
4811  **/
4812 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4813 {
4814         int status = QLA_ERROR;
4815         uint8_t reset_chip = 0;
4816         uint32_t dev_state;
4817         unsigned long wait;
4818 
4819         /* Stall incoming I/O until we are done */
4820         scsi_block_requests(ha->host);
4821         clear_bit(AF_ONLINE, &ha->flags);
4822         clear_bit(AF_LINK_UP, &ha->flags);
4823 
4824         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4825 
4826         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4827 
4828         if ((is_qla8032(ha) || is_qla8042(ha)) &&
4829             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4830                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4831                            __func__);
4832                 /* disable pause frame for ISP83xx */
4833                 qla4_83xx_disable_pause(ha);
4834         }
4835 
4836         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4837 
4838         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4839                 reset_chip = 1;
4840 
4841         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4842          * do not reset adapter, jump to initialize_adapter */
4843         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4844                 status = QLA_SUCCESS;
4845                 goto recover_ha_init_adapter;
4846         }
4847 
4848         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4849          * from eh_host_reset or ioctl module */
4850         if (is_qla80XX(ha) && !reset_chip &&
4851             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4852 
4853                 DEBUG2(ql4_printk(KERN_INFO, ha,
4854                     "scsi%ld: %s - Performing stop_firmware...\n",
4855                     ha->host_no, __func__));
4856                 status = ha->isp_ops->reset_firmware(ha);
4857                 if (status == QLA_SUCCESS) {
4858                         ha->isp_ops->disable_intrs(ha);
4859                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4860                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4861                 } else {
4862                         /* If the stop_firmware fails then
4863                          * reset the entire chip */
4864                         reset_chip = 1;
4865                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4866                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
4867                 }
4868         }
4869 
4870         /* Issue full chip reset if recovering from a catastrophic error,
4871          * or if stop_firmware fails for ISP-8xxx.
4872          * This is the default case for ISP-4xxx */
4873         if (is_qla40XX(ha) || reset_chip) {
4874                 if (is_qla40XX(ha))
4875                         goto chip_reset;
4876 
4877                 /* Check if 8XXX firmware is alive or not
4878                  * We may have arrived here from NEED_RESET
4879                  * detection only */
4880                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
4881                         goto chip_reset;
4882 
4883                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4884                 while (time_before(jiffies, wait)) {
4885                         if (qla4_8xxx_check_fw_alive(ha)) {
4886                                 qla4xxx_mailbox_premature_completion(ha);
4887                                 break;
4888                         }
4889 
4890                         set_current_state(TASK_UNINTERRUPTIBLE);
4891                         schedule_timeout(HZ);
4892                 }
4893 chip_reset:
4894                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4895                         qla4xxx_cmd_wait(ha);
4896 
4897                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4898                 DEBUG2(ql4_printk(KERN_INFO, ha,
4899                     "scsi%ld: %s - Performing chip reset..\n",
4900                     ha->host_no, __func__));
4901                 status = ha->isp_ops->reset_chip(ha);
4902                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4903         }
4904 
4905         /* Flush any pending ddb changed AENs */
4906         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4907 
4908 recover_ha_init_adapter:
4909         /* Upon successful firmware/chip reset, re-initialize the adapter */
4910         if (status == QLA_SUCCESS) {
4911                 /* For ISP-4xxx, force function 1 to always initialize
4912                  * before function 3 to prevent both funcions from
4913                  * stepping on top of the other */
4914                 if (is_qla40XX(ha) && (ha->mac_index == 3))
4915                         ssleep(6);
4916 
4917                 /* NOTE: AF_ONLINE flag set upon successful completion of
4918                  * qla4xxx_initialize_adapter */
4919                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4920                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
4921                         status = qla4_8xxx_check_init_adapter_retry(ha);
4922                         if (status == QLA_ERROR) {
4923                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
4924                                            ha->host_no, __func__);
4925                                 qla4xxx_dead_adapter_cleanup(ha);
4926                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4927                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4928                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4929                                           &ha->dpc_flags);
4930                                 goto exit_recover;
4931                         }
4932                 }
4933         }
4934 
4935         /* Retry failed adapter initialization, if necessary
4936          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4937          * case to prevent ping-pong resets between functions */
4938         if (!test_bit(AF_ONLINE, &ha->flags) &&
4939             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4940                 /* Adapter initialization failed, see if we can retry
4941                  * resetting the ha.
4942                  * Since we don't want to block the DPC for too long
4943                  * with multiple resets in the same thread,
4944                  * utilize DPC to retry */
4945                 if (is_qla80XX(ha)) {
4946                         ha->isp_ops->idc_lock(ha);
4947                         dev_state = qla4_8xxx_rd_direct(ha,
4948                                                         QLA8XXX_CRB_DEV_STATE);
4949                         ha->isp_ops->idc_unlock(ha);
4950                         if (dev_state == QLA8XXX_DEV_FAILED) {
4951                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
4952                                            "recover adapter. H/W is in Failed "
4953                                            "state\n", __func__);
4954                                 qla4xxx_dead_adapter_cleanup(ha);
4955                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4956                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4957                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4958                                                 &ha->dpc_flags);
4959                                 status = QLA_ERROR;
4960 
4961                                 goto exit_recover;
4962                         }
4963                 }
4964 
4965                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
4966                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
4967                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
4968                                       "(%d) more times\n", ha->host_no,
4969                                       ha->retry_reset_ha_cnt));
4970                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4971                         status = QLA_ERROR;
4972                 } else {
4973                         if (ha->retry_reset_ha_cnt > 0) {
4974                                 /* Schedule another Reset HA--DPC will retry */
4975                                 ha->retry_reset_ha_cnt--;
4976                                 DEBUG2(printk("scsi%ld: recover adapter - "
4977                                               "retry remaining %d\n",
4978                                               ha->host_no,
4979                                               ha->retry_reset_ha_cnt));
4980                                 status = QLA_ERROR;
4981                         }
4982 
4983                         if (ha->retry_reset_ha_cnt == 0) {
4984                                 /* Recover adapter retries have been exhausted.
4985                                  * Adapter DEAD */
4986                                 DEBUG2(printk("scsi%ld: recover adapter "
4987                                               "failed - board disabled\n",
4988                                               ha->host_no));
4989                                 qla4xxx_dead_adapter_cleanup(ha);
4990                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4991                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4992                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4993                                           &ha->dpc_flags);
4994                                 status = QLA_ERROR;
4995                         }
4996                 }
4997         } else {
4998                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4999                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5000                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5001         }
5002 
5003 exit_recover:
5004         ha->adapter_error_count++;
5005 
5006         if (test_bit(AF_ONLINE, &ha->flags))
5007                 ha->isp_ops->enable_intrs(ha);
5008 
5009         scsi_unblock_requests(ha->host);
5010 
5011         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5012         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
5013             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5014 
5015         return status;
5016 }
5017 
5018 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5019 {
5020         struct iscsi_session *sess;
5021         struct ddb_entry *ddb_entry;
5022         struct scsi_qla_host *ha;
5023 
5024         sess = cls_session->dd_data;
5025         ddb_entry = sess->dd_data;
5026         ha = ddb_entry->ha;
5027         if (!iscsi_is_session_online(cls_session)) {
5028                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
5029                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5030                                    " unblock session\n", ha->host_no, __func__,
5031                                    ddb_entry->fw_ddb_index);
5032                         iscsi_unblock_session(ddb_entry->sess);
5033                 } else {
5034                         /* Trigger relogin */
5035                         if (ddb_entry->ddb_type == FLASH_DDB) {
5036                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
5037                                       test_bit(DF_DISABLE_RELOGIN,
5038                                                &ddb_entry->flags)))
5039                                         qla4xxx_arm_relogin_timer(ddb_entry);
5040                         } else
5041                                 iscsi_session_failure(cls_session->dd_data,
5042                                                       ISCSI_ERR_CONN_FAILED);
5043                 }
5044         }
5045 }
5046 
5047 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5048 {
5049         struct iscsi_session *sess;
5050         struct ddb_entry *ddb_entry;
5051         struct scsi_qla_host *ha;
5052 
5053         sess = cls_session->dd_data;
5054         ddb_entry = sess->dd_data;
5055         ha = ddb_entry->ha;
5056         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5057                    " unblock session\n", ha->host_no, __func__,
5058                    ddb_entry->fw_ddb_index);
5059 
5060         iscsi_unblock_session(ddb_entry->sess);
5061 
5062         /* Start scan target */
5063         if (test_bit(AF_ONLINE, &ha->flags)) {
5064                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5065                            " start scan\n", ha->host_no, __func__,
5066                            ddb_entry->fw_ddb_index);
5067                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5068         }
5069         return QLA_SUCCESS;
5070 }
5071 
5072 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5073 {
5074         struct iscsi_session *sess;
5075         struct ddb_entry *ddb_entry;
5076         struct scsi_qla_host *ha;
5077         int status = QLA_SUCCESS;
5078 
5079         sess = cls_session->dd_data;
5080         ddb_entry = sess->dd_data;
5081         ha = ddb_entry->ha;
5082         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5083                    " unblock user space session\n", ha->host_no, __func__,
5084                    ddb_entry->fw_ddb_index);
5085 
5086         if (!iscsi_is_session_online(cls_session)) {
5087                 iscsi_conn_start(ddb_entry->conn);
5088                 iscsi_conn_login_event(ddb_entry->conn,
5089                                        ISCSI_CONN_STATE_LOGGED_IN);
5090         } else {
5091                 ql4_printk(KERN_INFO, ha,
5092                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5093                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
5094                            cls_session->sid);
5095                 status = QLA_ERROR;
5096         }
5097 
5098         return status;
5099 }
5100 
5101 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5102 {
5103         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5104 }
5105 
5106 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5107 {
5108         uint16_t relogin_timer;
5109         struct iscsi_session *sess;
5110         struct ddb_entry *ddb_entry;
5111         struct scsi_qla_host *ha;
5112 
5113         sess = cls_sess->dd_data;
5114         ddb_entry = sess->dd_data;
5115         ha = ddb_entry->ha;
5116 
5117         relogin_timer = max(ddb_entry->default_relogin_timeout,
5118                             (uint16_t)RELOGIN_TOV);
5119         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5120 
5121         DEBUG2(ql4_printk(KERN_INFO, ha,
5122                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5123                           ddb_entry->fw_ddb_index, relogin_timer));
5124 
5125         qla4xxx_login_flash_ddb(cls_sess);
5126 }
5127 
5128 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5129 {
5130         struct iscsi_session *sess;
5131         struct ddb_entry *ddb_entry;
5132         struct scsi_qla_host *ha;
5133 
5134         sess = cls_sess->dd_data;
5135         ddb_entry = sess->dd_data;
5136         ha = ddb_entry->ha;
5137 
5138         if (!(ddb_entry->ddb_type == FLASH_DDB))
5139                 return;
5140 
5141         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5142                 return;
5143 
5144         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5145             !iscsi_is_session_online(cls_sess)) {
5146                 DEBUG2(ql4_printk(KERN_INFO, ha,
5147                                   "relogin issued\n"));
5148                 qla4xxx_relogin_flash_ddb(cls_sess);
5149         }
5150 }
5151 
5152 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5153 {
5154         if (ha->dpc_thread)
5155                 queue_work(ha->dpc_thread, &ha->dpc_work);
5156 }
5157 
5158 static struct qla4_work_evt *
5159 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5160                    enum qla4_work_type type)
5161 {
5162         struct qla4_work_evt *e;
5163         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5164 
5165         e = kzalloc(size, GFP_ATOMIC);
5166         if (!e)
5167                 return NULL;
5168 
5169         INIT_LIST_HEAD(&e->list);
5170         e->type = type;
5171         return e;
5172 }
5173 
5174 static void qla4xxx_post_work(struct scsi_qla_host *ha,
5175                              struct qla4_work_evt *e)
5176 {
5177         unsigned long flags;
5178 
5179         spin_lock_irqsave(&ha->work_lock, flags);
5180         list_add_tail(&e->list, &ha->work_list);
5181         spin_unlock_irqrestore(&ha->work_lock, flags);
5182         qla4xxx_wake_dpc(ha);
5183 }
5184 
5185 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5186                           enum iscsi_host_event_code aen_code,
5187                           uint32_t data_size, uint8_t *data)
5188 {
5189         struct qla4_work_evt *e;
5190 
5191         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5192         if (!e)
5193                 return QLA_ERROR;
5194 
5195         e->u.aen.code = aen_code;
5196         e->u.aen.data_size = data_size;
5197         memcpy(e->u.aen.data, data, data_size);
5198 
5199         qla4xxx_post_work(ha, e);
5200 
5201         return QLA_SUCCESS;
5202 }
5203 
5204 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5205                                uint32_t status, uint32_t pid,
5206                                uint32_t data_size, uint8_t *data)
5207 {
5208         struct qla4_work_evt *e;
5209 
5210         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5211         if (!e)
5212                 return QLA_ERROR;
5213 
5214         e->u.ping.status = status;
5215         e->u.ping.pid = pid;
5216         e->u.ping.data_size = data_size;
5217         memcpy(e->u.ping.data, data, data_size);
5218 
5219         qla4xxx_post_work(ha, e);
5220 
5221         return QLA_SUCCESS;
5222 }
5223 
5224 static void qla4xxx_do_work(struct scsi_qla_host *ha)
5225 {
5226         struct qla4_work_evt *e, *tmp;
5227         unsigned long flags;
5228         LIST_HEAD(work);
5229 
5230         spin_lock_irqsave(&ha->work_lock, flags);
5231         list_splice_init(&ha->work_list, &work);
5232         spin_unlock_irqrestore(&ha->work_lock, flags);
5233 
5234         list_for_each_entry_safe(e, tmp, &work, list) {
5235                 list_del_init(&e->list);
5236 
5237                 switch (e->type) {
5238                 case QLA4_EVENT_AEN:
5239                         iscsi_post_host_event(ha->host_no,
5240                                               &qla4xxx_iscsi_transport,
5241                                               e->u.aen.code,
5242                                               e->u.aen.data_size,
5243                                               e->u.aen.data);
5244                         break;
5245                 case QLA4_EVENT_PING_STATUS:
5246                         iscsi_ping_comp_event(ha->host_no,
5247                                               &qla4xxx_iscsi_transport,
5248                                               e->u.ping.status,
5249                                               e->u.ping.pid,
5250                                               e->u.ping.data_size,
5251                                               e->u.ping.data);
5252                         break;
5253                 default:
5254                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5255                                    "supported", e->type);
5256                 }
5257                 kfree(e);
5258         }
5259 }
5260 
5261 /**
5262  * qla4xxx_do_dpc - dpc routine
5263  * @data: in our case pointer to adapter structure
5264  *
5265  * This routine is a task that is schedule by the interrupt handler
5266  * to perform the background processing for interrupts.  We put it
5267  * on a task queue that is consumed whenever the scheduler runs; that's
5268  * so you can do anything (i.e. put the process to sleep etc).  In fact,
5269  * the mid-level tries to sleep when it reaches the driver threshold
5270  * "host->can_queue". This can cause a panic if we were in our interrupt code.
5271  **/
5272 static void qla4xxx_do_dpc(struct work_struct *work)
5273 {
5274         struct scsi_qla_host *ha =
5275                 container_of(work, struct scsi_qla_host, dpc_work);
5276         int status = QLA_ERROR;
5277 
5278         DEBUG2(ql4_printk(KERN_INFO, ha,
5279                           "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5280                           ha->host_no, __func__, ha->flags, ha->dpc_flags));
5281 
5282         /* Initialization not yet finished. Don't do anything yet. */
5283         if (!test_bit(AF_INIT_DONE, &ha->flags))
5284                 return;
5285 
5286         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5287                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5288                     ha->host_no, __func__, ha->flags));
5289                 return;
5290         }
5291 
5292         /* post events to application */
5293         qla4xxx_do_work(ha);
5294 
5295         if (is_qla80XX(ha)) {
5296                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5297                         if (is_qla8032(ha) || is_qla8042(ha)) {
5298                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5299                                            __func__);
5300                                 /* disable pause frame for ISP83xx */
5301                                 qla4_83xx_disable_pause(ha);
5302                         }
5303 
5304                         ha->isp_ops->idc_lock(ha);
5305                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5306                                             QLA8XXX_DEV_FAILED);
5307                         ha->isp_ops->idc_unlock(ha);
5308                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5309                         qla4_8xxx_device_state_handler(ha);
5310                 }
5311 
5312                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5313                         if (is_qla8042(ha)) {
5314                                 if (ha->idc_info.info2 &
5315                                     ENABLE_INTERNAL_LOOPBACK) {
5316                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5317                                                    __func__);
5318                                         status = qla4_84xx_config_acb(ha,
5319                                                             ACB_CONFIG_DISABLE);
5320                                         if (status != QLA_SUCCESS) {
5321                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5322                                                            __func__);
5323                                         }
5324                                 }
5325                         }
5326                         qla4_83xx_post_idc_ack(ha);
5327                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5328                 }
5329 
5330                 if (is_qla8042(ha) &&
5331                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5332                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5333                                    __func__);
5334                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5335                             QLA_SUCCESS) {
5336                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5337                                            __func__);
5338                         }
5339                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5340                 }
5341 
5342                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5343                         qla4_8xxx_need_qsnt_handler(ha);
5344                 }
5345         }
5346 
5347         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5348             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5349             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5350             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5351                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5352                     ((is_qla8032(ha) || is_qla8042(ha)) &&
5353                      qla4_83xx_idc_dontreset(ha))) {
5354                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5355                             ha->host_no, __func__));
5356                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5357                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5358                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5359                         goto dpc_post_reset_ha;
5360                 }
5361                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5362                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
5363                         qla4xxx_recover_adapter(ha);
5364 
5365                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5366                         uint8_t wait_time = RESET_INTR_TOV;
5367 
5368                         while ((readw(&ha->reg->ctrl_status) &
5369                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5370                                 if (--wait_time == 0)
5371                                         break;
5372                                 msleep(1000);
5373                         }
5374                         if (wait_time == 0)
5375                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
5376                                               "bit not cleared-- resetting\n",
5377                                               ha->host_no, __func__));
5378                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5379                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5380                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5381                                 status = qla4xxx_recover_adapter(ha);
5382                         }
5383                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5384                         if (status == QLA_SUCCESS)
5385                                 ha->isp_ops->enable_intrs(ha);
5386                 }
5387         }
5388 
5389 dpc_post_reset_ha:
5390         /* ---- process AEN? --- */
5391         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5392                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5393 
5394         /* ---- Get DHCP IP Address? --- */
5395         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5396                 qla4xxx_get_dhcp_ip_address(ha);
5397 
5398         /* ---- relogin device? --- */
5399         if (adapter_up(ha) &&
5400             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5401                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5402         }
5403 
5404         /* ---- link change? --- */
5405         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5406             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5407                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5408                         /* ---- link down? --- */
5409                         qla4xxx_mark_all_devices_missing(ha);
5410                 } else {
5411                         /* ---- link up? --- *
5412                          * F/W will auto login to all devices ONLY ONCE after
5413                          * link up during driver initialization and runtime
5414                          * fatal error recovery.  Therefore, the driver must
5415                          * manually relogin to devices when recovering from
5416                          * connection failures, logouts, expired KATO, etc. */
5417                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5418                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
5419                                 iscsi_host_for_each_session(ha->host,
5420                                                 qla4xxx_login_flash_ddb);
5421                         } else
5422                                 qla4xxx_relogin_all_devices(ha);
5423                 }
5424         }
5425         if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
5426                 if (qla4xxx_sysfs_ddb_export(ha))
5427                         ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
5428                                    __func__);
5429         }
5430 }
5431 
5432 /**
5433  * qla4xxx_free_adapter - release the adapter
5434  * @ha: pointer to adapter structure
5435  **/
5436 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5437 {
5438         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5439 
5440         /* Turn-off interrupts on the card. */
5441         ha->isp_ops->disable_intrs(ha);
5442 
5443         if (is_qla40XX(ha)) {
5444                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5445                        &ha->reg->ctrl_status);
5446                 readl(&ha->reg->ctrl_status);
5447         } else if (is_qla8022(ha)) {
5448                 writel(0, &ha->qla4_82xx_reg->host_int);
5449                 readl(&ha->qla4_82xx_reg->host_int);
5450         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5451                 writel(0, &ha->qla4_83xx_reg->risc_intr);
5452                 readl(&ha->qla4_83xx_reg->risc_intr);
5453         }
5454 
5455         /* Remove timer thread, if present */
5456         if (ha->timer_active)
5457                 qla4xxx_stop_timer(ha);
5458 
5459         /* Kill the kernel thread for this host */
5460         if (ha->dpc_thread)
5461                 destroy_workqueue(ha->dpc_thread);
5462 
5463         /* Kill the kernel thread for this host */
5464         if (ha->task_wq)
5465                 destroy_workqueue(ha->task_wq);
5466 
5467         /* Put firmware in known state */
5468         ha->isp_ops->reset_firmware(ha);
5469 
5470         if (is_qla80XX(ha)) {
5471                 ha->isp_ops->idc_lock(ha);
5472                 qla4_8xxx_clear_drv_active(ha);
5473                 ha->isp_ops->idc_unlock(ha);
5474         }
5475 
5476         /* Detach interrupts */
5477         qla4xxx_free_irqs(ha);
5478 
5479         /* free extra memory */
5480         qla4xxx_mem_free(ha);
5481 }
5482 
5483 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5484 {
5485         int status = 0;
5486         unsigned long mem_base, mem_len, db_base, db_len;
5487         struct pci_dev *pdev = ha->pdev;
5488 
5489         status = pci_request_regions(pdev, DRIVER_NAME);
5490         if (status) {
5491                 printk(KERN_WARNING
5492                     "scsi(%ld) Failed to reserve PIO regions (%s) "
5493                     "status=%d\n", ha->host_no, pci_name(pdev), status);
5494                 goto iospace_error_exit;
5495         }
5496 
5497         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5498             __func__, pdev->revision));
5499         ha->revision_id = pdev->revision;
5500 
5501         /* remap phys address */
5502         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5503         mem_len = pci_resource_len(pdev, 0);
5504         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5505             __func__, mem_base, mem_len));
5506 
5507         /* mapping of pcibase pointer */
5508         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5509         if (!ha->nx_pcibase) {
5510                 printk(KERN_ERR
5511                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5512                 pci_release_regions(ha->pdev);
5513                 goto iospace_error_exit;
5514         }
5515 
5516         /* Mapping of IO base pointer, door bell read and write pointer */
5517 
5518         /* mapping of IO base pointer */
5519         if (is_qla8022(ha)) {
5520                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5521                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5522                                      (ha->pdev->devfn << 11));
5523                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5524                                     QLA82XX_CAM_RAM_DB2);
5525         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5526                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5527                                     ((uint8_t *)ha->nx_pcibase);
5528         }
5529 
5530         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
5531         db_len = pci_resource_len(pdev, 4);
5532 
5533         return 0;
5534 iospace_error_exit:
5535         return -ENOMEM;
5536 }
5537 
5538 /***
5539  * qla4xxx_iospace_config - maps registers
5540  * @ha: pointer to adapter structure
5541  *
5542  * This routines maps HBA's registers from the pci address space
5543  * into the kernel virtual address space for memory mapped i/o.
5544  **/
5545 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5546 {
5547         unsigned long pio, pio_len, pio_flags;
5548         unsigned long mmio, mmio_len, mmio_flags;
5549 
5550         pio = pci_resource_start(ha->pdev, 0);
5551         pio_len = pci_resource_len(ha->pdev, 0);
5552         pio_flags = pci_resource_flags(ha->pdev, 0);
5553         if (pio_flags & IORESOURCE_IO) {
5554                 if (pio_len < MIN_IOBASE_LEN) {
5555                         ql4_printk(KERN_WARNING, ha,
5556                                 "Invalid PCI I/O region size\n");
5557                         pio = 0;
5558                 }
5559         } else {
5560                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5561                 pio = 0;
5562         }
5563 
5564         /* Use MMIO operations for all accesses. */
5565         mmio = pci_resource_start(ha->pdev, 1);
5566         mmio_len = pci_resource_len(ha->pdev, 1);
5567         mmio_flags = pci_resource_flags(ha->pdev, 1);
5568 
5569         if (!(mmio_flags & IORESOURCE_MEM)) {
5570                 ql4_printk(KERN_ERR, ha,
5571                     "region #0 not an MMIO resource, aborting\n");
5572 
5573                 goto iospace_error_exit;
5574         }
5575 
5576         if (mmio_len < MIN_IOBASE_LEN) {
5577                 ql4_printk(KERN_ERR, ha,
5578                     "Invalid PCI mem region size, aborting\n");
5579                 goto iospace_error_exit;
5580         }
5581 
5582         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5583                 ql4_printk(KERN_WARNING, ha,
5584                     "Failed to reserve PIO/MMIO regions\n");
5585 
5586                 goto iospace_error_exit;
5587         }
5588 
5589         ha->pio_address = pio;
5590         ha->pio_length = pio_len;
5591         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5592         if (!ha->reg) {
5593                 ql4_printk(KERN_ERR, ha,
5594                     "cannot remap MMIO, aborting\n");
5595 
5596                 goto iospace_error_exit;
5597         }
5598 
5599         return 0;
5600 
5601 iospace_error_exit:
5602         return -ENOMEM;
5603 }
5604 
5605 static struct isp_operations qla4xxx_isp_ops = {
5606         .iospace_config         = qla4xxx_iospace_config,
5607         .pci_config             = qla4xxx_pci_config,
5608         .disable_intrs          = qla4xxx_disable_intrs,
5609         .enable_intrs           = qla4xxx_enable_intrs,
5610         .start_firmware         = qla4xxx_start_firmware,
5611         .intr_handler           = qla4xxx_intr_handler,
5612         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5613         .reset_chip             = qla4xxx_soft_reset,
5614         .reset_firmware         = qla4xxx_hw_reset,
5615         .queue_iocb             = qla4xxx_queue_iocb,
5616         .complete_iocb          = qla4xxx_complete_iocb,
5617         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5618         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5619         .get_sys_info           = qla4xxx_get_sys_info,
5620         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5621         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5622 };
5623 
5624 static struct isp_operations qla4_82xx_isp_ops = {
5625         .iospace_config         = qla4_8xxx_iospace_config,
5626         .pci_config             = qla4_8xxx_pci_config,
5627         .disable_intrs          = qla4_82xx_disable_intrs,
5628         .enable_intrs           = qla4_82xx_enable_intrs,
5629         .start_firmware         = qla4_8xxx_load_risc,
5630         .restart_firmware       = qla4_82xx_try_start_fw,
5631         .intr_handler           = qla4_82xx_intr_handler,
5632         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5633         .need_reset             = qla4_8xxx_need_reset,
5634         .reset_chip             = qla4_82xx_isp_reset,
5635         .reset_firmware         = qla4_8xxx_stop_firmware,
5636         .queue_iocb             = qla4_82xx_queue_iocb,
5637         .complete_iocb          = qla4_82xx_complete_iocb,
5638         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5639         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5640         .get_sys_info           = qla4_8xxx_get_sys_info,
5641         .rd_reg_direct          = qla4_82xx_rd_32,
5642         .wr_reg_direct          = qla4_82xx_wr_32,
5643         .rd_reg_indirect        = qla4_82xx_md_rd_32,
5644         .wr_reg_indirect        = qla4_82xx_md_wr_32,
5645         .idc_lock               = qla4_82xx_idc_lock,
5646         .idc_unlock             = qla4_82xx_idc_unlock,
5647         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5648         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5649         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5650 };
5651 
5652 static struct isp_operations qla4_83xx_isp_ops = {
5653         .iospace_config         = qla4_8xxx_iospace_config,
5654         .pci_config             = qla4_8xxx_pci_config,
5655         .disable_intrs          = qla4_83xx_disable_intrs,
5656         .enable_intrs           = qla4_83xx_enable_intrs,
5657         .start_firmware         = qla4_8xxx_load_risc,
5658         .restart_firmware       = qla4_83xx_start_firmware,
5659         .intr_handler           = qla4_83xx_intr_handler,
5660         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5661         .need_reset             = qla4_8xxx_need_reset,
5662         .reset_chip             = qla4_83xx_isp_reset,
5663         .reset_firmware         = qla4_8xxx_stop_firmware,
5664         .queue_iocb             = qla4_83xx_queue_iocb,
5665         .complete_iocb          = qla4_83xx_complete_iocb,
5666         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5667         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5668         .get_sys_info           = qla4_8xxx_get_sys_info,
5669         .rd_reg_direct          = qla4_83xx_rd_reg,
5670         .wr_reg_direct          = qla4_83xx_wr_reg,
5671         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5672         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5673         .idc_lock               = qla4_83xx_drv_lock,
5674         .idc_unlock             = qla4_83xx_drv_unlock,
5675         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5676         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5677         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5678 };
5679 
5680 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5681 {
5682         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5683 }
5684 
5685 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5686 {
5687         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5688 }
5689 
5690 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5691 {
5692         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5693 }
5694 
5695 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5696 {
5697         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5698 }
5699 
5700 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5701 {
5702         struct scsi_qla_host *ha = data;
5703         char *str = buf;
5704         int rc;
5705 
5706         switch (type) {
5707         case ISCSI_BOOT_ETH_FLAGS:
5708                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5709                 break;
5710         case ISCSI_BOOT_ETH_INDEX:
5711                 rc = sprintf(str, "\n");
5712                 break;
5713         case ISCSI_BOOT_ETH_MAC:
5714                 rc = sysfs_format_mac(str, ha->my_mac,
5715                                       MAC_ADDR_LEN);
5716                 break;
5717         default:
5718                 rc = -ENOSYS;
5719                 break;
5720         }
5721         return rc;
5722 }
5723 
5724 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5725 {
5726         int rc;
5727 
5728         switch (type) {
5729         case ISCSI_BOOT_ETH_FLAGS:
5730         case ISCSI_BOOT_ETH_MAC:
5731         case ISCSI_BOOT_ETH_INDEX:
5732                 rc = S_IRUGO;
5733                 break;
5734         default:
5735                 rc = 0;
5736                 break;
5737         }
5738         return rc;
5739 }
5740 
5741 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5742 {
5743         struct scsi_qla_host *ha = data;
5744         char *str = buf;
5745         int rc;
5746 
5747         switch (type) {
5748         case ISCSI_BOOT_INI_INITIATOR_NAME:
5749                 rc = sprintf(str, "%s\n", ha->name_string);
5750                 break;
5751         default:
5752                 rc = -ENOSYS;
5753                 break;
5754         }
5755         return rc;
5756 }
5757 
5758 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5759 {
5760         int rc;
5761 
5762         switch (type) {
5763         case ISCSI_BOOT_INI_INITIATOR_NAME:
5764                 rc = S_IRUGO;
5765                 break;
5766         default:
5767                 rc = 0;
5768                 break;
5769         }
5770         return rc;
5771 }
5772 
5773 static ssize_t
5774 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5775                            char *buf)
5776 {
5777         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5778         char *str = buf;
5779         int rc;
5780 
5781         switch (type) {
5782         case ISCSI_BOOT_TGT_NAME:
5783                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5784                 break;
5785         case ISCSI_BOOT_TGT_IP_ADDR:
5786                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5787                         rc = sprintf(buf, "%pI4\n",
5788                                      &boot_conn->dest_ipaddr.ip_address);
5789                 else
5790                         rc = sprintf(str, "%pI6\n",
5791                                      &boot_conn->dest_ipaddr.ip_address);
5792                 break;
5793         case ISCSI_BOOT_TGT_PORT:
5794                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
5795                 break;
5796         case ISCSI_BOOT_TGT_CHAP_NAME:
5797                 rc = sprintf(str,  "%.*s\n",
5798                              boot_conn->chap.target_chap_name_length,
5799                              (char *)&boot_conn->chap.target_chap_name);
5800                 break;
5801         case ISCSI_BOOT_TGT_CHAP_SECRET:
5802                 rc = sprintf(str,  "%.*s\n",
5803                              boot_conn->chap.target_secret_length,
5804                              (char *)&boot_conn->chap.target_secret);
5805                 break;
5806         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5807                 rc = sprintf(str,  "%.*s\n",
5808                              boot_conn->chap.intr_chap_name_length,
5809                              (char *)&boot_conn->chap.intr_chap_name);
5810                 break;
5811         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5812                 rc = sprintf(str,  "%.*s\n",
5813                              boot_conn->chap.intr_secret_length,
5814                              (char *)&boot_conn->chap.intr_secret);
5815                 break;
5816         case ISCSI_BOOT_TGT_FLAGS:
5817                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5818                 break;
5819         case ISCSI_BOOT_TGT_NIC_ASSOC:
5820                 rc = sprintf(str, "\n");
5821                 break;
5822         default:
5823                 rc = -ENOSYS;
5824                 break;
5825         }
5826         return rc;
5827 }
5828 
5829 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5830 {
5831         struct scsi_qla_host *ha = data;
5832         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5833 
5834         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5835 }
5836 
5837 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5838 {
5839         struct scsi_qla_host *ha = data;
5840         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5841 
5842         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5843 }
5844 
5845 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5846 {
5847         int rc;
5848 
5849         switch (type) {
5850         case ISCSI_BOOT_TGT_NAME:
5851         case ISCSI_BOOT_TGT_IP_ADDR:
5852         case ISCSI_BOOT_TGT_PORT:
5853         case ISCSI_BOOT_TGT_CHAP_NAME:
5854         case ISCSI_BOOT_TGT_CHAP_SECRET:
5855         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5856         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5857         case ISCSI_BOOT_TGT_NIC_ASSOC:
5858         case ISCSI_BOOT_TGT_FLAGS:
5859                 rc = S_IRUGO;
5860                 break;
5861         default:
5862                 rc = 0;
5863                 break;
5864         }
5865         return rc;
5866 }
5867 
5868 static void qla4xxx_boot_release(void *data)
5869 {
5870         struct scsi_qla_host *ha = data;
5871 
5872         scsi_host_put(ha->host);
5873 }
5874 
5875 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5876 {
5877         dma_addr_t buf_dma;
5878         uint32_t addr, pri_addr, sec_addr;
5879         uint32_t offset;
5880         uint16_t func_num;
5881         uint8_t val;
5882         uint8_t *buf = NULL;
5883         size_t size = 13 * sizeof(uint8_t);
5884         int ret = QLA_SUCCESS;
5885 
5886         func_num = PCI_FUNC(ha->pdev->devfn);
5887 
5888         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5889                    __func__, ha->pdev->device, func_num);
5890 
5891         if (is_qla40XX(ha)) {
5892                 if (func_num == 1) {
5893                         addr = NVRAM_PORT0_BOOT_MODE;
5894                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5895                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5896                 } else if (func_num == 3) {
5897                         addr = NVRAM_PORT1_BOOT_MODE;
5898                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5899                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5900                 } else {
5901                         ret = QLA_ERROR;
5902                         goto exit_boot_info;
5903                 }
5904 
5905                 /* Check Boot Mode */
5906                 val = rd_nvram_byte(ha, addr);
5907                 if (!(val & 0x07)) {
5908                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5909                                           "options : 0x%x\n", __func__, val));
5910                         ret = QLA_ERROR;
5911                         goto exit_boot_info;
5912                 }
5913 
5914                 /* get primary valid target index */
5915                 val = rd_nvram_byte(ha, pri_addr);
5916                 if (val & BIT_7)
5917                         ddb_index[0] = (val & 0x7f);
5918 
5919                 /* get secondary valid target index */
5920                 val = rd_nvram_byte(ha, sec_addr);
5921                 if (val & BIT_7)
5922                         ddb_index[1] = (val & 0x7f);
5923 
5924         } else if (is_qla80XX(ha)) {
5925                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
5926                                          &buf_dma, GFP_KERNEL);
5927                 if (!buf) {
5928                         DEBUG2(ql4_printk(KERN_ERR, ha,
5929                                           "%s: Unable to allocate dma buffer\n",
5930                                            __func__));
5931                         ret = QLA_ERROR;
5932                         goto exit_boot_info;
5933                 }
5934 
5935                 if (ha->port_num == 0)
5936                         offset = BOOT_PARAM_OFFSET_PORT0;
5937                 else if (ha->port_num == 1)
5938                         offset = BOOT_PARAM_OFFSET_PORT1;
5939                 else {
5940                         ret = QLA_ERROR;
5941                         goto exit_boot_info_free;
5942                 }
5943                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5944                        offset;
5945                 if (qla4xxx_get_flash(ha, buf_dma, addr,
5946                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5947                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5948                                           " failed\n", ha->host_no, __func__));
5949                         ret = QLA_ERROR;
5950                         goto exit_boot_info_free;
5951                 }
5952                 /* Check Boot Mode */
5953                 if (!(buf[1] & 0x07)) {
5954                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
5955                                           " : 0x%x\n", buf[1]));
5956                         ret = QLA_ERROR;
5957                         goto exit_boot_info_free;
5958                 }
5959 
5960                 /* get primary valid target index */
5961                 if (buf[2] & BIT_7)
5962                         ddb_index[0] = buf[2] & 0x7f;
5963 
5964                 /* get secondary valid target index */
5965                 if (buf[11] & BIT_7)
5966                         ddb_index[1] = buf[11] & 0x7f;
5967         } else {
5968                 ret = QLA_ERROR;
5969                 goto exit_boot_info;
5970         }
5971 
5972         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
5973                           " target ID %d\n", __func__, ddb_index[0],
5974                           ddb_index[1]));
5975 
5976 exit_boot_info_free:
5977         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
5978 exit_boot_info:
5979         ha->pri_ddb_idx = ddb_index[0];
5980         ha->sec_ddb_idx = ddb_index[1];
5981         return ret;
5982 }
5983 
5984 /**
5985  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
5986  * @ha: pointer to adapter structure
5987  * @username: CHAP username to be returned
5988  * @password: CHAP password to be returned
5989  *
5990  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
5991  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
5992  * So from the CHAP cache find the first BIDI CHAP entry and set it
5993  * to the boot record in sysfs.
5994  **/
5995 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
5996                             char *password)
5997 {
5998         int i, ret = -EINVAL;
5999         int max_chap_entries = 0;
6000         struct ql4_chap_table *chap_table;
6001 
6002         if (is_qla80XX(ha))
6003                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
6004                                                 sizeof(struct ql4_chap_table);
6005         else
6006                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
6007 
6008         if (!ha->chap_list) {
6009                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
6010                 return ret;
6011         }
6012 
6013         mutex_lock(&ha->chap_sem);
6014         for (i = 0; i < max_chap_entries; i++) {
6015                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
6016                 if (chap_table->cookie !=
6017                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
6018                         continue;
6019                 }
6020 
6021                 if (chap_table->flags & BIT_7) /* local */
6022                         continue;
6023 
6024                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
6025                         continue;
6026 
6027                 strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
6028                 strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6029                 ret = 0;
6030                 break;
6031         }
6032         mutex_unlock(&ha->chap_sem);
6033 
6034         return ret;
6035 }
6036 
6037 
6038 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
6039                                    struct ql4_boot_session_info *boot_sess,
6040                                    uint16_t ddb_index)
6041 {
6042         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
6043         struct dev_db_entry *fw_ddb_entry;
6044         dma_addr_t fw_ddb_entry_dma;
6045         uint16_t idx;
6046         uint16_t options;
6047         int ret = QLA_SUCCESS;
6048 
6049         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6050                                           &fw_ddb_entry_dma, GFP_KERNEL);
6051         if (!fw_ddb_entry) {
6052                 DEBUG2(ql4_printk(KERN_ERR, ha,
6053                                   "%s: Unable to allocate dma buffer.\n",
6054                                   __func__));
6055                 ret = QLA_ERROR;
6056                 return ret;
6057         }
6058 
6059         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6060                                    fw_ddb_entry_dma, ddb_index)) {
6061                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6062                                   "index [%d]\n", __func__, ddb_index));
6063                 ret = QLA_ERROR;
6064                 goto exit_boot_target;
6065         }
6066 
6067         /* Update target name and IP from DDB */
6068         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6069                min(sizeof(boot_sess->target_name),
6070                    sizeof(fw_ddb_entry->iscsi_name)));
6071 
6072         options = le16_to_cpu(fw_ddb_entry->options);
6073         if (options & DDB_OPT_IPV6_DEVICE) {
6074                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6075                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6076         } else {
6077                 boot_conn->dest_ipaddr.ip_type = 0x1;
6078                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6079                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6080         }
6081 
6082         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6083 
6084         /* update chap information */
6085         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6086 
6087         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6088 
6089                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6090 
6091                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6092                                        target_chap_name,
6093                                        (char *)&boot_conn->chap.target_secret,
6094                                        idx);
6095                 if (ret) {
6096                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6097                         ret = QLA_ERROR;
6098                         goto exit_boot_target;
6099                 }
6100 
6101                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6102                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6103         }
6104 
6105         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6106 
6107                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6108 
6109                 ret = qla4xxx_get_bidi_chap(ha,
6110                                     (char *)&boot_conn->chap.intr_chap_name,
6111                                     (char *)&boot_conn->chap.intr_secret);
6112 
6113                 if (ret) {
6114                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6115                         ret = QLA_ERROR;
6116                         goto exit_boot_target;
6117                 }
6118 
6119                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6120                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6121         }
6122 
6123 exit_boot_target:
6124         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6125                           fw_ddb_entry, fw_ddb_entry_dma);
6126         return ret;
6127 }
6128 
6129 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6130 {
6131         uint16_t ddb_index[2];
6132         int ret = QLA_ERROR;
6133         int rval;
6134 
6135         memset(ddb_index, 0, sizeof(ddb_index));
6136         ddb_index[0] = 0xffff;
6137         ddb_index[1] = 0xffff;
6138         ret = get_fw_boot_info(ha, ddb_index);
6139         if (ret != QLA_SUCCESS) {
6140                 DEBUG2(ql4_printk(KERN_INFO, ha,
6141                                 "%s: No boot target configured.\n", __func__));
6142                 return ret;
6143         }
6144 
6145         if (ql4xdisablesysfsboot)
6146                 return QLA_SUCCESS;
6147 
6148         if (ddb_index[0] == 0xffff)
6149                 goto sec_target;
6150 
6151         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6152                                       ddb_index[0]);
6153         if (rval != QLA_SUCCESS) {
6154                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6155                                   "configured\n", __func__));
6156         } else
6157                 ret = QLA_SUCCESS;
6158 
6159 sec_target:
6160         if (ddb_index[1] == 0xffff)
6161                 goto exit_get_boot_info;
6162 
6163         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6164                                       ddb_index[1]);
6165         if (rval != QLA_SUCCESS) {
6166                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6167                                   " configured\n", __func__));
6168         } else
6169                 ret = QLA_SUCCESS;
6170 
6171 exit_get_boot_info:
6172         return ret;
6173 }
6174 
6175 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6176 {
6177         struct iscsi_boot_kobj *boot_kobj;
6178 
6179         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6180                 return QLA_ERROR;
6181 
6182         if (ql4xdisablesysfsboot) {
6183                 ql4_printk(KERN_INFO, ha,
6184                            "%s: syfsboot disabled - driver will trigger login "
6185                            "and publish session for discovery .\n", __func__);
6186                 return QLA_SUCCESS;
6187         }
6188 
6189 
6190         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6191         if (!ha->boot_kset)
6192                 goto kset_free;
6193 
6194         if (!scsi_host_get(ha->host))
6195                 goto kset_free;
6196         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6197                                              qla4xxx_show_boot_tgt_pri_info,
6198                                              qla4xxx_tgt_get_attr_visibility,
6199                                              qla4xxx_boot_release);
6200         if (!boot_kobj)
6201                 goto put_host;
6202 
6203         if (!scsi_host_get(ha->host))
6204                 goto kset_free;
6205         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6206                                              qla4xxx_show_boot_tgt_sec_info,
6207                                              qla4xxx_tgt_get_attr_visibility,
6208                                              qla4xxx_boot_release);
6209         if (!boot_kobj)
6210                 goto put_host;
6211 
6212         if (!scsi_host_get(ha->host))
6213                 goto kset_free;
6214         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
6215                                                qla4xxx_show_boot_ini_info,
6216                                                qla4xxx_ini_get_attr_visibility,
6217                                                qla4xxx_boot_release);
6218         if (!boot_kobj)
6219                 goto put_host;
6220 
6221         if (!scsi_host_get(ha->host))
6222                 goto kset_free;
6223         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
6224                                                qla4xxx_show_boot_eth_info,
6225                                                qla4xxx_eth_get_attr_visibility,
6226                                                qla4xxx_boot_release);
6227         if (!boot_kobj)
6228                 goto put_host;
6229 
6230         return QLA_SUCCESS;
6231 
6232 put_host:
6233         scsi_host_put(ha->host);
6234 kset_free:
6235         iscsi_boot_destroy_kset(ha->boot_kset);
6236         return -ENOMEM;
6237 }
6238 
6239 
6240 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6241                                   struct ql4_tuple_ddb *tddb)
6242 {
6243         struct scsi_qla_host *ha;
6244         struct iscsi_cls_session *cls_sess;
6245         struct iscsi_cls_conn *cls_conn;
6246         struct iscsi_session *sess;
6247         struct iscsi_conn *conn;
6248 
6249         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6250         ha = ddb_entry->ha;
6251         cls_sess = ddb_entry->sess;
6252         sess = cls_sess->dd_data;
6253         cls_conn = ddb_entry->conn;
6254         conn = cls_conn->dd_data;
6255 
6256         tddb->tpgt = sess->tpgt;
6257         tddb->port = conn->persistent_port;
6258         strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6259         strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6260 }
6261 
6262 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6263                                       struct ql4_tuple_ddb *tddb,
6264                                       uint8_t *flash_isid)
6265 {
6266         uint16_t options = 0;
6267 
6268         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6269         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6270                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6271 
6272         options = le16_to_cpu(fw_ddb_entry->options);
6273         if (options & DDB_OPT_IPV6_DEVICE)
6274                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6275         else
6276                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6277 
6278         tddb->port = le16_to_cpu(fw_ddb_entry->port);
6279 
6280         if (flash_isid == NULL)
6281                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6282                        sizeof(tddb->isid));
6283         else
6284                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6285 }
6286 
6287 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6288                                      struct ql4_tuple_ddb *old_tddb,
6289                                      struct ql4_tuple_ddb *new_tddb,
6290                                      uint8_t is_isid_compare)
6291 {
6292         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6293                 return QLA_ERROR;
6294 
6295         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6296                 return QLA_ERROR;
6297 
6298         if (old_tddb->port != new_tddb->port)
6299                 return QLA_ERROR;
6300 
6301         /* For multi sessions, driver generates the ISID, so do not compare
6302          * ISID in reset path since it would be a comparison between the
6303          * driver generated ISID and firmware generated ISID. This could
6304          * lead to adding duplicated DDBs in the list as driver generated
6305          * ISID would not match firmware generated ISID.
6306          */
6307         if (is_isid_compare) {
6308                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
6309                         "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
6310                         __func__, old_tddb->isid[5], old_tddb->isid[4],
6311                         old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
6312                         old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
6313                         new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
6314                         new_tddb->isid[0]));
6315 
6316                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6317                            sizeof(old_tddb->isid)))
6318                         return QLA_ERROR;
6319         }
6320 
6321         DEBUG2(ql4_printk(KERN_INFO, ha,
6322                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6323                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6324                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6325                           new_tddb->ip_addr, new_tddb->iscsi_name));
6326 
6327         return QLA_SUCCESS;
6328 }
6329 
6330 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6331                                      struct dev_db_entry *fw_ddb_entry,
6332                                      uint32_t *index)
6333 {
6334         struct ddb_entry *ddb_entry;
6335         struct ql4_tuple_ddb *fw_tddb = NULL;
6336         struct ql4_tuple_ddb *tmp_tddb = NULL;
6337         int idx;
6338         int ret = QLA_ERROR;
6339 
6340         fw_tddb = vzalloc(sizeof(*fw_tddb));
6341         if (!fw_tddb) {
6342                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6343                                   "Memory Allocation failed.\n"));
6344                 ret = QLA_SUCCESS;
6345                 goto exit_check;
6346         }
6347 
6348         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6349         if (!tmp_tddb) {
6350                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6351                                   "Memory Allocation failed.\n"));
6352                 ret = QLA_SUCCESS;
6353                 goto exit_check;
6354         }
6355 
6356         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6357 
6358         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6359                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6360                 if (ddb_entry == NULL)
6361                         continue;
6362 
6363                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6364                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6365                         ret = QLA_SUCCESS; /* found */
6366                         if (index != NULL)
6367                                 *index = idx;
6368                         goto exit_check;
6369                 }
6370         }
6371 
6372 exit_check:
6373         if (fw_tddb)
6374                 vfree(fw_tddb);
6375         if (tmp_tddb)
6376                 vfree(tmp_tddb);
6377         return ret;
6378 }
6379 
6380 /**
6381  * qla4xxx_check_existing_isid - check if target with same isid exist
6382  *                               in target list
6383  * @list_nt: list of target
6384  * @isid: isid to check
6385  *
6386  * This routine return QLA_SUCCESS if target with same isid exist
6387  **/
6388 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6389 {
6390         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6391         struct dev_db_entry *fw_ddb_entry;
6392 
6393         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6394                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6395 
6396                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6397                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6398                         return QLA_SUCCESS;
6399                 }
6400         }
6401         return QLA_ERROR;
6402 }
6403 
6404 /**
6405  * qla4xxx_update_isid - compare ddbs and updated isid
6406  * @ha: Pointer to host adapter structure.
6407  * @list_nt: list of nt target
6408  * @fw_ddb_entry: firmware ddb entry
6409  *
6410  * This routine update isid if ddbs have same iqn, same isid and
6411  * different IP addr.
6412  * Return QLA_SUCCESS if isid is updated.
6413  **/
6414 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6415                                struct list_head *list_nt,
6416                                struct dev_db_entry *fw_ddb_entry)
6417 {
6418         uint8_t base_value, i;
6419 
6420         base_value = fw_ddb_entry->isid[1] & 0x1f;
6421         for (i = 0; i < 8; i++) {
6422                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
6423                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6424                         break;
6425         }
6426 
6427         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6428                 return QLA_ERROR;
6429 
6430         return QLA_SUCCESS;
6431 }
6432 
6433 /**
6434  * qla4xxx_should_update_isid - check if isid need to update
6435  * @ha: Pointer to host adapter structure.
6436  * @old_tddb: ddb tuple
6437  * @new_tddb: ddb tuple
6438  *
6439  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6440  * same isid
6441  **/
6442 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6443                                       struct ql4_tuple_ddb *old_tddb,
6444                                       struct ql4_tuple_ddb *new_tddb)
6445 {
6446         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6447                 /* Same ip */
6448                 if (old_tddb->port == new_tddb->port)
6449                         return QLA_ERROR;
6450         }
6451 
6452         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6453                 /* different iqn */
6454                 return QLA_ERROR;
6455 
6456         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6457                    sizeof(old_tddb->isid)))
6458                 /* different isid */
6459                 return QLA_ERROR;
6460 
6461         return QLA_SUCCESS;
6462 }
6463 
6464 /**
6465  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6466  * @ha: Pointer to host adapter structure.
6467  * @list_nt: list of nt target.
6468  * @fw_ddb_entry: firmware ddb entry.
6469  *
6470  * This routine check if fw_ddb_entry already exists in list_nt to avoid
6471  * duplicate ddb in list_nt.
6472  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6473  * Note: This function also update isid of DDB if required.
6474  **/
6475 
6476 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6477                                        struct list_head *list_nt,
6478                                        struct dev_db_entry *fw_ddb_entry)
6479 {
6480         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6481         struct ql4_tuple_ddb *fw_tddb = NULL;
6482         struct ql4_tuple_ddb *tmp_tddb = NULL;
6483         int rval, ret = QLA_ERROR;
6484 
6485         fw_tddb = vzalloc(sizeof(*fw_tddb));
6486         if (!fw_tddb) {
6487                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6488                                   "Memory Allocation failed.\n"));
6489                 ret = QLA_SUCCESS;
6490                 goto exit_check;
6491         }
6492 
6493         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6494         if (!tmp_tddb) {
6495                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6496                                   "Memory Allocation failed.\n"));
6497                 ret = QLA_SUCCESS;
6498                 goto exit_check;
6499         }
6500 
6501         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6502 
6503         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6504                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6505                                           nt_ddb_idx->flash_isid);
6506                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6507                 /* found duplicate ddb */
6508                 if (ret == QLA_SUCCESS)
6509                         goto exit_check;
6510         }
6511 
6512         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6513                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
6514 
6515                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6516                 if (ret == QLA_SUCCESS) {
6517                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6518                         if (rval == QLA_SUCCESS)
6519                                 ret = QLA_ERROR;
6520                         else
6521                                 ret = QLA_SUCCESS;
6522 
6523                         goto exit_check;
6524                 }
6525         }
6526 
6527 exit_check:
6528         if (fw_tddb)
6529                 vfree(fw_tddb);
6530         if (tmp_tddb)
6531                 vfree(tmp_tddb);
6532         return ret;
6533 }
6534 
6535 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6536 {
6537         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6538 
6539         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6540                 list_del_init(&ddb_idx->list);
6541                 vfree(ddb_idx);
6542         }
6543 }
6544 
6545 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6546                                         struct dev_db_entry *fw_ddb_entry)
6547 {
6548         struct iscsi_endpoint *ep;
6549         struct sockaddr_in *addr;
6550         struct sockaddr_in6 *addr6;
6551         struct sockaddr *t_addr;
6552         struct sockaddr_storage *dst_addr;
6553         char *ip;
6554 
6555         /* TODO: need to destroy on unload iscsi_endpoint*/
6556         dst_addr = vmalloc(sizeof(*dst_addr));
6557         if (!dst_addr)
6558                 return NULL;
6559 
6560         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6561                 t_addr = (struct sockaddr *)dst_addr;
6562                 t_addr->sa_family = AF_INET6;
6563                 addr6 = (struct sockaddr_in6 *)dst_addr;
6564                 ip = (char *)&addr6->sin6_addr;
6565                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6566                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6567 
6568         } else {
6569                 t_addr = (struct sockaddr *)dst_addr;
6570                 t_addr->sa_family = AF_INET;
6571                 addr = (struct sockaddr_in *)dst_addr;
6572                 ip = (char *)&addr->sin_addr;
6573                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6574                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6575         }
6576 
6577         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6578         vfree(dst_addr);
6579         return ep;
6580 }
6581 
6582 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6583 {
6584         if (ql4xdisablesysfsboot)
6585                 return QLA_SUCCESS;
6586         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6587                 return QLA_ERROR;
6588         return QLA_SUCCESS;
6589 }
6590 
6591 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6592                                           struct ddb_entry *ddb_entry,
6593                                           uint16_t idx)
6594 {
6595         uint16_t def_timeout;
6596 
6597         ddb_entry->ddb_type = FLASH_DDB;
6598         ddb_entry->fw_ddb_index = INVALID_ENTRY;
6599         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6600         ddb_entry->ha = ha;
6601         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6602         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6603         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6604 
6605         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6606         atomic_set(&ddb_entry->relogin_timer, 0);
6607         atomic_set(&ddb_entry->relogin_retry_count, 0);
6608         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6609         ddb_entry->default_relogin_timeout =
6610                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6611                 def_timeout : LOGIN_TOV;
6612         ddb_entry->default_time2wait =
6613                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6614 
6615         if (ql4xdisablesysfsboot &&
6616             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6617                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6618 }
6619 
6620 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6621 {
6622         uint32_t idx = 0;
6623         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6624         uint32_t sts[MBOX_REG_COUNT];
6625         uint32_t ip_state;
6626         unsigned long wtime;
6627         int ret;
6628 
6629         wtime = jiffies + (HZ * IP_CONFIG_TOV);
6630         do {
6631                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6632                         if (ip_idx[idx] == -1)
6633                                 continue;
6634 
6635                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6636 
6637                         if (ret == QLA_ERROR) {
6638                                 ip_idx[idx] = -1;
6639                                 continue;
6640                         }
6641 
6642                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6643 
6644                         DEBUG2(ql4_printk(KERN_INFO, ha,
6645                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
6646                                           ip_idx[idx], ip_state));
6647                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6648                             ip_state == IP_ADDRSTATE_INVALID ||
6649                             ip_state == IP_ADDRSTATE_PREFERRED ||
6650                             ip_state == IP_ADDRSTATE_DEPRICATED ||
6651                             ip_state == IP_ADDRSTATE_DISABLING)
6652                                 ip_idx[idx] = -1;
6653                 }
6654 
6655                 /* Break if all IP states checked */
6656                 if ((ip_idx[0] == -1) &&
6657                     (ip_idx[1] == -1) &&
6658                     (ip_idx[2] == -1) &&
6659                     (ip_idx[3] == -1))
6660                         break;
6661                 schedule_timeout_uninterruptible(HZ);
6662         } while (time_after(wtime, jiffies));
6663 }
6664 
6665 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6666                                   struct dev_db_entry *flash_ddb_entry)
6667 {
6668         uint16_t options = 0;
6669         size_t ip_len = IP_ADDR_LEN;
6670 
6671         options = le16_to_cpu(fw_ddb_entry->options);
6672         if (options & DDB_OPT_IPV6_DEVICE)
6673                 ip_len = IPv6_ADDR_LEN;
6674 
6675         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6676                 return QLA_ERROR;
6677 
6678         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6679                    sizeof(fw_ddb_entry->isid)))
6680                 return QLA_ERROR;
6681 
6682         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6683                    sizeof(fw_ddb_entry->port)))
6684                 return QLA_ERROR;
6685 
6686         return QLA_SUCCESS;
6687 }
6688 
6689 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6690                                      struct dev_db_entry *fw_ddb_entry,
6691                                      uint32_t fw_idx, uint32_t *flash_index)
6692 {
6693         struct dev_db_entry *flash_ddb_entry;
6694         dma_addr_t flash_ddb_entry_dma;
6695         uint32_t idx = 0;
6696         int max_ddbs;
6697         int ret = QLA_ERROR, status;
6698 
6699         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6700                                      MAX_DEV_DB_ENTRIES;
6701 
6702         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6703                                          &flash_ddb_entry_dma);
6704         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6705                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
6706                 goto exit_find_st_idx;
6707         }
6708 
6709         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6710                                           flash_ddb_entry_dma, fw_idx);
6711         if (status == QLA_SUCCESS) {
6712                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6713                 if (status == QLA_SUCCESS) {
6714                         *flash_index = fw_idx;
6715                         ret = QLA_SUCCESS;
6716                         goto exit_find_st_idx;
6717                 }
6718         }
6719 
6720         for (idx = 0; idx < max_ddbs; idx++) {
6721                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6722                                                   flash_ddb_entry_dma, idx);
6723                 if (status == QLA_ERROR)
6724                         continue;
6725 
6726                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6727                 if (status == QLA_SUCCESS) {
6728                         *flash_index = idx;
6729                         ret = QLA_SUCCESS;
6730                         goto exit_find_st_idx;
6731                 }
6732         }
6733 
6734         if (idx == max_ddbs)
6735                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6736                            fw_idx);
6737 
6738 exit_find_st_idx:
6739         if (flash_ddb_entry)
6740                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6741                               flash_ddb_entry_dma);
6742 
6743         return ret;
6744 }
6745 
6746 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6747                                   struct list_head *list_st)
6748 {
6749         struct qla_ddb_index  *st_ddb_idx;
6750         int max_ddbs;
6751         int fw_idx_size;
6752         struct dev_db_entry *fw_ddb_entry;
6753         dma_addr_t fw_ddb_dma;
6754         int ret;
6755         uint32_t idx = 0, next_idx = 0;
6756         uint32_t state = 0, conn_err = 0;
6757         uint32_t flash_index = -1;
6758         uint16_t conn_id = 0;
6759 
6760         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6761                                       &fw_ddb_dma);
6762         if (fw_ddb_entry == NULL) {
6763                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6764                 goto exit_st_list;
6765         }
6766 
6767         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6768                                      MAX_DEV_DB_ENTRIES;
6769         fw_idx_size = sizeof(struct qla_ddb_index);
6770 
6771         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6772                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6773                                               NULL, &next_idx, &state,
6774                                               &conn_err, NULL, &conn_id);
6775                 if (ret == QLA_ERROR)
6776                         break;
6777 
6778                 /* Ignore DDB if invalid state (unassigned) */
6779                 if (state == DDB_DS_UNASSIGNED)
6780                         goto continue_next_st;
6781 
6782                 /* Check if ST, add to the list_st */
6783                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6784                         goto continue_next_st;
6785 
6786                 st_ddb_idx = vzalloc(fw_idx_size);
6787                 if (!st_ddb_idx)
6788                         break;
6789 
6790                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6791                                                 &flash_index);
6792                 if (ret == QLA_ERROR) {
6793                         ql4_printk(KERN_ERR, ha,
6794                                    "No flash entry for ST at idx [%d]\n", idx);
6795                         st_ddb_idx->flash_ddb_idx = idx;
6796                 } else {
6797                         ql4_printk(KERN_INFO, ha,
6798                                    "ST at idx [%d] is stored at flash [%d]\n",
6799                                    idx, flash_index);
6800                         st_ddb_idx->flash_ddb_idx = flash_index;
6801                 }
6802 
6803                 st_ddb_idx->fw_ddb_idx = idx;
6804 
6805                 list_add_tail(&st_ddb_idx->list, list_st);
6806 continue_next_st:
6807                 if (next_idx == 0)
6808                         break;
6809         }
6810 
6811 exit_st_list:
6812         if (fw_ddb_entry)
6813                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6814 }
6815 
6816 /**
6817  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6818  * @ha: pointer to adapter structure
6819  * @list_ddb: List from which failed ddb to be removed
6820  *
6821  * Iterate over the list of DDBs and find and remove DDBs that are either in
6822  * no connection active state or failed state
6823  **/
6824 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6825                                       struct list_head *list_ddb)
6826 {
6827         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6828         uint32_t next_idx = 0;
6829         uint32_t state = 0, conn_err = 0;
6830         int ret;
6831 
6832         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6833                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6834                                               NULL, 0, NULL, &next_idx, &state,
6835                                               &conn_err, NULL, NULL);
6836                 if (ret == QLA_ERROR)
6837                         continue;
6838 
6839                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6840                     state == DDB_DS_SESSION_FAILED) {
6841                         list_del_init(&ddb_idx->list);
6842                         vfree(ddb_idx);
6843                 }
6844         }
6845 }
6846 
6847 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6848                                          struct ddb_entry *ddb_entry,
6849                                          struct dev_db_entry *fw_ddb_entry)
6850 {
6851         struct iscsi_cls_session *cls_sess;
6852         struct iscsi_session *sess;
6853         uint32_t max_ddbs = 0;
6854         uint16_t ddb_link = -1;
6855 
6856         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6857                                      MAX_DEV_DB_ENTRIES;
6858 
6859         cls_sess = ddb_entry->sess;
6860         sess = cls_sess->dd_data;
6861 
6862         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6863         if (ddb_link < max_ddbs)
6864                 sess->discovery_parent_idx = ddb_link;
6865         else
6866                 sess->discovery_parent_idx = DDB_NO_LINK;
6867 }
6868 
6869 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6870                                    struct dev_db_entry *fw_ddb_entry,
6871                                    int is_reset, uint16_t idx)
6872 {
6873         struct iscsi_cls_session *cls_sess;
6874         struct iscsi_session *sess;
6875         struct iscsi_cls_conn *cls_conn;
6876         struct iscsi_endpoint *ep;
6877         uint16_t cmds_max = 32;
6878         uint16_t conn_id = 0;
6879         uint32_t initial_cmdsn = 0;
6880         int ret = QLA_SUCCESS;
6881 
6882         struct ddb_entry *ddb_entry = NULL;
6883 
6884         /* Create session object, with INVALID_ENTRY,
6885          * the targer_id would get set when we issue the login
6886          */
6887         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6888                                        cmds_max, sizeof(struct ddb_entry),
6889                                        sizeof(struct ql4_task_data),
6890                                        initial_cmdsn, INVALID_ENTRY);
6891         if (!cls_sess) {
6892                 ret = QLA_ERROR;
6893                 goto exit_setup;
6894         }
6895 
6896         /*
6897          * so calling module_put function to decrement the
6898          * reference count.
6899          **/
6900         module_put(qla4xxx_iscsi_transport.owner);
6901         sess = cls_sess->dd_data;
6902         ddb_entry = sess->dd_data;
6903         ddb_entry->sess = cls_sess;
6904 
6905         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6906         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6907                sizeof(struct dev_db_entry));
6908 
6909         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6910 
6911         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6912 
6913         if (!cls_conn) {
6914                 ret = QLA_ERROR;
6915                 goto exit_setup;
6916         }
6917 
6918         ddb_entry->conn = cls_conn;
6919 
6920         /* Setup ep, for displaying attributes in sysfs */
6921         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6922         if (ep) {
6923                 ep->conn = cls_conn;
6924                 cls_conn->ep = ep;
6925         } else {
6926                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6927                 ret = QLA_ERROR;
6928                 goto exit_setup;
6929         }
6930 
6931         /* Update sess/conn params */
6932         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6933         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6934 
6935         if (is_reset == RESET_ADAPTER) {
6936                 iscsi_block_session(cls_sess);
6937                 /* Use the relogin path to discover new devices
6938                  *  by short-circuting the logic of setting
6939                  *  timer to relogin - instead set the flags
6940                  *  to initiate login right away.
6941                  */
6942                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6943                 set_bit(DF_RELOGIN, &ddb_entry->flags);
6944         }
6945 
6946 exit_setup:
6947         return ret;
6948 }
6949 
6950 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6951                                        struct list_head *list_ddb,
6952                                        struct dev_db_entry *fw_ddb_entry)
6953 {
6954         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6955         uint16_t ddb_link;
6956 
6957         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6958 
6959         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6960                 if (ddb_idx->fw_ddb_idx == ddb_link) {
6961                         DEBUG2(ql4_printk(KERN_INFO, ha,
6962                                           "Updating NT parent idx from [%d] to [%d]\n",
6963                                           ddb_link, ddb_idx->flash_ddb_idx));
6964                         fw_ddb_entry->ddb_link =
6965                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
6966                         return;
6967                 }
6968         }
6969 }
6970 
6971 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
6972                                   struct list_head *list_nt,
6973                                   struct list_head *list_st,
6974                                   int is_reset)
6975 {
6976         struct dev_db_entry *fw_ddb_entry;
6977         struct ddb_entry *ddb_entry = NULL;
6978         dma_addr_t fw_ddb_dma;
6979         int max_ddbs;
6980         int fw_idx_size;
6981         int ret;
6982         uint32_t idx = 0, next_idx = 0;
6983         uint32_t state = 0, conn_err = 0;
6984         uint32_t ddb_idx = -1;
6985         uint16_t conn_id = 0;
6986         uint16_t ddb_link = -1;
6987         struct qla_ddb_index  *nt_ddb_idx;
6988 
6989         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6990                                       &fw_ddb_dma);
6991         if (fw_ddb_entry == NULL) {
6992                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6993                 goto exit_nt_list;
6994         }
6995         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6996                                      MAX_DEV_DB_ENTRIES;
6997         fw_idx_size = sizeof(struct qla_ddb_index);
6998 
6999         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7000                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7001                                               NULL, &next_idx, &state,
7002                                               &conn_err, NULL, &conn_id);
7003                 if (ret == QLA_ERROR)
7004                         break;
7005 
7006                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
7007                         goto continue_next_nt;
7008 
7009                 /* Check if NT, then add to list it */
7010                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
7011                         goto continue_next_nt;
7012 
7013                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
7014                 if (ddb_link < max_ddbs)
7015                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
7016 
7017                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7018                     state == DDB_DS_SESSION_FAILED) &&
7019                     (is_reset == INIT_ADAPTER))
7020                         goto continue_next_nt;
7021 
7022                 DEBUG2(ql4_printk(KERN_INFO, ha,
7023                                   "Adding  DDB to session = 0x%x\n", idx));
7024 
7025                 if (is_reset == INIT_ADAPTER) {
7026                         nt_ddb_idx = vmalloc(fw_idx_size);
7027                         if (!nt_ddb_idx)
7028                                 break;
7029 
7030                         nt_ddb_idx->fw_ddb_idx = idx;
7031 
7032                         /* Copy original isid as it may get updated in function
7033                          * qla4xxx_update_isid(). We need original isid in
7034                          * function qla4xxx_compare_tuple_ddb to find duplicate
7035                          * target */
7036                         memcpy(&nt_ddb_idx->flash_isid[0],
7037                                &fw_ddb_entry->isid[0],
7038                                sizeof(nt_ddb_idx->flash_isid));
7039 
7040                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
7041                                                           fw_ddb_entry);
7042                         if (ret == QLA_SUCCESS) {
7043                                 /* free nt_ddb_idx and do not add to list_nt */
7044                                 vfree(nt_ddb_idx);
7045                                 goto continue_next_nt;
7046                         }
7047 
7048                         /* Copy updated isid */
7049                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
7050                                sizeof(struct dev_db_entry));
7051 
7052                         list_add_tail(&nt_ddb_idx->list, list_nt);
7053                 } else if (is_reset == RESET_ADAPTER) {
7054                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7055                                                         &ddb_idx);
7056                         if (ret == QLA_SUCCESS) {
7057                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7058                                                                        ddb_idx);
7059                                 if (ddb_entry != NULL)
7060                                         qla4xxx_update_sess_disc_idx(ha,
7061                                                                      ddb_entry,
7062                                                                   fw_ddb_entry);
7063                                 goto continue_next_nt;
7064                         }
7065                 }
7066 
7067                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7068                 if (ret == QLA_ERROR)
7069                         goto exit_nt_list;
7070 
7071 continue_next_nt:
7072                 if (next_idx == 0)
7073                         break;
7074         }
7075 
7076 exit_nt_list:
7077         if (fw_ddb_entry)
7078                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7079 }
7080 
7081 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7082                                       struct list_head *list_nt,
7083                                       uint16_t target_id)
7084 {
7085         struct dev_db_entry *fw_ddb_entry;
7086         dma_addr_t fw_ddb_dma;
7087         int max_ddbs;
7088         int fw_idx_size;
7089         int ret;
7090         uint32_t idx = 0, next_idx = 0;
7091         uint32_t state = 0, conn_err = 0;
7092         uint16_t conn_id = 0;
7093         struct qla_ddb_index  *nt_ddb_idx;
7094 
7095         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7096                                       &fw_ddb_dma);
7097         if (fw_ddb_entry == NULL) {
7098                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7099                 goto exit_new_nt_list;
7100         }
710