root/drivers/scsi/qedi/qedi_iscsi.c

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DEFINITIONS

This source file includes following definitions.
  1. qedi_recover_all_conns
  2. qedi_eh_host_reset
  3. qedi_conn_free_login_resources
  4. qedi_conn_alloc_login_resources
  5. qedi_destroy_cmd_pool
  6. qedi_alloc_sget
  7. qedi_setup_cmd_pool
  8. qedi_session_create
  9. qedi_session_destroy
  10. qedi_conn_create
  11. qedi_mark_device_missing
  12. qedi_mark_device_available
  13. qedi_bind_conn_to_iscsi_cid
  14. qedi_get_conn_from_id
  15. qedi_conn_bind
  16. qedi_iscsi_update_conn
  17. qedi_calc_mss
  18. qedi_iscsi_offload_conn
  19. qedi_conn_start
  20. qedi_conn_destroy
  21. qedi_ep_get_param
  22. qedi_host_get_param
  23. qedi_conn_get_stats
  24. qedi_iscsi_prep_generic_pdu_bd
  25. qedi_iscsi_send_generic_request
  26. qedi_mtask_xmit
  27. qedi_task_xmit
  28. qedi_ep_connect
  29. qedi_ep_poll
  30. qedi_cleanup_active_cmd_list
  31. qedi_ep_disconnect
  32. qedi_data_avail
  33. qedi_offload_work
  34. qedi_set_path
  35. qedi_attr_is_visible
  36. qedi_cleanup_task
  37. qedi_start_conn_recovery
  38. qedi_get_iscsi_error
  39. qedi_process_iscsi_error
  40. qedi_process_tcp_error

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic iSCSI Offload Driver
   4  * Copyright (c) 2016 Cavium Inc.
   5  */
   6 
   7 #include <linux/blkdev.h>
   8 #include <linux/etherdevice.h>
   9 #include <linux/if_ether.h>
  10 #include <linux/if_vlan.h>
  11 #include <scsi/scsi_tcq.h>
  12 
  13 #include "qedi.h"
  14 #include "qedi_iscsi.h"
  15 #include "qedi_gbl.h"
  16 
  17 int qedi_recover_all_conns(struct qedi_ctx *qedi)
  18 {
  19         struct qedi_conn *qedi_conn;
  20         int i;
  21 
  22         for (i = 0; i < qedi->max_active_conns; i++) {
  23                 qedi_conn = qedi_get_conn_from_id(qedi, i);
  24                 if (!qedi_conn)
  25                         continue;
  26 
  27                 qedi_start_conn_recovery(qedi, qedi_conn);
  28         }
  29 
  30         return SUCCESS;
  31 }
  32 
  33 static int qedi_eh_host_reset(struct scsi_cmnd *cmd)
  34 {
  35         struct Scsi_Host *shost = cmd->device->host;
  36         struct qedi_ctx *qedi;
  37 
  38         qedi = iscsi_host_priv(shost);
  39 
  40         return qedi_recover_all_conns(qedi);
  41 }
  42 
  43 struct scsi_host_template qedi_host_template = {
  44         .module = THIS_MODULE,
  45         .name = "QLogic QEDI 25/40/100Gb iSCSI Initiator Driver",
  46         .proc_name = QEDI_MODULE_NAME,
  47         .queuecommand = iscsi_queuecommand,
  48         .eh_timed_out = iscsi_eh_cmd_timed_out,
  49         .eh_abort_handler = iscsi_eh_abort,
  50         .eh_device_reset_handler = iscsi_eh_device_reset,
  51         .eh_target_reset_handler = iscsi_eh_recover_target,
  52         .eh_host_reset_handler = qedi_eh_host_reset,
  53         .target_alloc = iscsi_target_alloc,
  54         .change_queue_depth = scsi_change_queue_depth,
  55         .can_queue = QEDI_MAX_ISCSI_TASK,
  56         .this_id = -1,
  57         .sg_tablesize = QEDI_ISCSI_MAX_BDS_PER_CMD,
  58         .max_sectors = 0xffff,
  59         .dma_boundary = QEDI_HW_DMA_BOUNDARY,
  60         .cmd_per_lun = 128,
  61         .shost_attrs = qedi_shost_attrs,
  62 };
  63 
  64 static void qedi_conn_free_login_resources(struct qedi_ctx *qedi,
  65                                            struct qedi_conn *qedi_conn)
  66 {
  67         if (qedi_conn->gen_pdu.resp_bd_tbl) {
  68                 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
  69                                   qedi_conn->gen_pdu.resp_bd_tbl,
  70                                   qedi_conn->gen_pdu.resp_bd_dma);
  71                 qedi_conn->gen_pdu.resp_bd_tbl = NULL;
  72         }
  73 
  74         if (qedi_conn->gen_pdu.req_bd_tbl) {
  75                 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
  76                                   qedi_conn->gen_pdu.req_bd_tbl,
  77                                   qedi_conn->gen_pdu.req_bd_dma);
  78                 qedi_conn->gen_pdu.req_bd_tbl = NULL;
  79         }
  80 
  81         if (qedi_conn->gen_pdu.resp_buf) {
  82                 dma_free_coherent(&qedi->pdev->dev,
  83                                   ISCSI_DEF_MAX_RECV_SEG_LEN,
  84                                   qedi_conn->gen_pdu.resp_buf,
  85                                   qedi_conn->gen_pdu.resp_dma_addr);
  86                 qedi_conn->gen_pdu.resp_buf = NULL;
  87         }
  88 
  89         if (qedi_conn->gen_pdu.req_buf) {
  90                 dma_free_coherent(&qedi->pdev->dev,
  91                                   ISCSI_DEF_MAX_RECV_SEG_LEN,
  92                                   qedi_conn->gen_pdu.req_buf,
  93                                   qedi_conn->gen_pdu.req_dma_addr);
  94                 qedi_conn->gen_pdu.req_buf = NULL;
  95         }
  96 }
  97 
  98 static int qedi_conn_alloc_login_resources(struct qedi_ctx *qedi,
  99                                            struct qedi_conn *qedi_conn)
 100 {
 101         qedi_conn->gen_pdu.req_buf =
 102                 dma_alloc_coherent(&qedi->pdev->dev,
 103                                    ISCSI_DEF_MAX_RECV_SEG_LEN,
 104                                    &qedi_conn->gen_pdu.req_dma_addr,
 105                                    GFP_KERNEL);
 106         if (!qedi_conn->gen_pdu.req_buf)
 107                 goto login_req_buf_failure;
 108 
 109         qedi_conn->gen_pdu.req_buf_size = 0;
 110         qedi_conn->gen_pdu.req_wr_ptr = qedi_conn->gen_pdu.req_buf;
 111 
 112         qedi_conn->gen_pdu.resp_buf =
 113                 dma_alloc_coherent(&qedi->pdev->dev,
 114                                    ISCSI_DEF_MAX_RECV_SEG_LEN,
 115                                    &qedi_conn->gen_pdu.resp_dma_addr,
 116                                    GFP_KERNEL);
 117         if (!qedi_conn->gen_pdu.resp_buf)
 118                 goto login_resp_buf_failure;
 119 
 120         qedi_conn->gen_pdu.resp_buf_size = ISCSI_DEF_MAX_RECV_SEG_LEN;
 121         qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf;
 122 
 123         qedi_conn->gen_pdu.req_bd_tbl =
 124                 dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
 125                                    &qedi_conn->gen_pdu.req_bd_dma, GFP_KERNEL);
 126         if (!qedi_conn->gen_pdu.req_bd_tbl)
 127                 goto login_req_bd_tbl_failure;
 128 
 129         qedi_conn->gen_pdu.resp_bd_tbl =
 130                 dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
 131                                    &qedi_conn->gen_pdu.resp_bd_dma,
 132                                    GFP_KERNEL);
 133         if (!qedi_conn->gen_pdu.resp_bd_tbl)
 134                 goto login_resp_bd_tbl_failure;
 135 
 136         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SESS,
 137                   "Allocation successful, cid=0x%x\n",
 138                   qedi_conn->iscsi_conn_id);
 139         return 0;
 140 
 141 login_resp_bd_tbl_failure:
 142         dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
 143                           qedi_conn->gen_pdu.req_bd_tbl,
 144                           qedi_conn->gen_pdu.req_bd_dma);
 145         qedi_conn->gen_pdu.req_bd_tbl = NULL;
 146 
 147 login_req_bd_tbl_failure:
 148         dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
 149                           qedi_conn->gen_pdu.resp_buf,
 150                           qedi_conn->gen_pdu.resp_dma_addr);
 151         qedi_conn->gen_pdu.resp_buf = NULL;
 152 login_resp_buf_failure:
 153         dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
 154                           qedi_conn->gen_pdu.req_buf,
 155                           qedi_conn->gen_pdu.req_dma_addr);
 156         qedi_conn->gen_pdu.req_buf = NULL;
 157 login_req_buf_failure:
 158         iscsi_conn_printk(KERN_ERR, qedi_conn->cls_conn->dd_data,
 159                           "login resource alloc failed!!\n");
 160         return -ENOMEM;
 161 }
 162 
 163 static void qedi_destroy_cmd_pool(struct qedi_ctx *qedi,
 164                                   struct iscsi_session *session)
 165 {
 166         int i;
 167 
 168         for (i = 0; i < session->cmds_max; i++) {
 169                 struct iscsi_task *task = session->cmds[i];
 170                 struct qedi_cmd *cmd = task->dd_data;
 171 
 172                 if (cmd->io_tbl.sge_tbl)
 173                         dma_free_coherent(&qedi->pdev->dev,
 174                                           QEDI_ISCSI_MAX_BDS_PER_CMD *
 175                                           sizeof(struct scsi_sge),
 176                                           cmd->io_tbl.sge_tbl,
 177                                           cmd->io_tbl.sge_tbl_dma);
 178 
 179                 if (cmd->sense_buffer)
 180                         dma_free_coherent(&qedi->pdev->dev,
 181                                           SCSI_SENSE_BUFFERSIZE,
 182                                           cmd->sense_buffer,
 183                                           cmd->sense_buffer_dma);
 184         }
 185 }
 186 
 187 static int qedi_alloc_sget(struct qedi_ctx *qedi, struct iscsi_session *session,
 188                            struct qedi_cmd *cmd)
 189 {
 190         struct qedi_io_bdt *io = &cmd->io_tbl;
 191         struct scsi_sge *sge;
 192 
 193         io->sge_tbl = dma_alloc_coherent(&qedi->pdev->dev,
 194                                          QEDI_ISCSI_MAX_BDS_PER_CMD *
 195                                          sizeof(*sge),
 196                                          &io->sge_tbl_dma, GFP_KERNEL);
 197         if (!io->sge_tbl) {
 198                 iscsi_session_printk(KERN_ERR, session,
 199                                      "Could not allocate BD table.\n");
 200                 return -ENOMEM;
 201         }
 202 
 203         io->sge_valid = 0;
 204         return 0;
 205 }
 206 
 207 static int qedi_setup_cmd_pool(struct qedi_ctx *qedi,
 208                                struct iscsi_session *session)
 209 {
 210         int i;
 211 
 212         for (i = 0; i < session->cmds_max; i++) {
 213                 struct iscsi_task *task = session->cmds[i];
 214                 struct qedi_cmd *cmd = task->dd_data;
 215 
 216                 task->hdr = &cmd->hdr;
 217                 task->hdr_max = sizeof(struct iscsi_hdr);
 218 
 219                 if (qedi_alloc_sget(qedi, session, cmd))
 220                         goto free_sgets;
 221 
 222                 cmd->sense_buffer = dma_alloc_coherent(&qedi->pdev->dev,
 223                                                        SCSI_SENSE_BUFFERSIZE,
 224                                                        &cmd->sense_buffer_dma,
 225                                                        GFP_KERNEL);
 226                 if (!cmd->sense_buffer)
 227                         goto free_sgets;
 228         }
 229 
 230         return 0;
 231 
 232 free_sgets:
 233         qedi_destroy_cmd_pool(qedi, session);
 234         return -ENOMEM;
 235 }
 236 
 237 static struct iscsi_cls_session *
 238 qedi_session_create(struct iscsi_endpoint *ep, u16 cmds_max,
 239                     u16 qdepth, uint32_t initial_cmdsn)
 240 {
 241         struct Scsi_Host *shost;
 242         struct iscsi_cls_session *cls_session;
 243         struct qedi_ctx *qedi;
 244         struct qedi_endpoint *qedi_ep;
 245 
 246         if (!ep)
 247                 return NULL;
 248 
 249         qedi_ep = ep->dd_data;
 250         shost = qedi_ep->qedi->shost;
 251         qedi = iscsi_host_priv(shost);
 252 
 253         if (cmds_max > qedi->max_sqes)
 254                 cmds_max = qedi->max_sqes;
 255         else if (cmds_max < QEDI_SQ_WQES_MIN)
 256                 cmds_max = QEDI_SQ_WQES_MIN;
 257 
 258         cls_session = iscsi_session_setup(&qedi_iscsi_transport, shost,
 259                                           cmds_max, 0, sizeof(struct qedi_cmd),
 260                                           initial_cmdsn, ISCSI_MAX_TARGET);
 261         if (!cls_session) {
 262                 QEDI_ERR(&qedi->dbg_ctx,
 263                          "Failed to setup session for ep=%p\n", qedi_ep);
 264                 return NULL;
 265         }
 266 
 267         if (qedi_setup_cmd_pool(qedi, cls_session->dd_data)) {
 268                 QEDI_ERR(&qedi->dbg_ctx,
 269                          "Failed to setup cmd pool for ep=%p\n", qedi_ep);
 270                 goto session_teardown;
 271         }
 272 
 273         return cls_session;
 274 
 275 session_teardown:
 276         iscsi_session_teardown(cls_session);
 277         return NULL;
 278 }
 279 
 280 static void qedi_session_destroy(struct iscsi_cls_session *cls_session)
 281 {
 282         struct iscsi_session *session = cls_session->dd_data;
 283         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
 284         struct qedi_ctx *qedi = iscsi_host_priv(shost);
 285 
 286         qedi_destroy_cmd_pool(qedi, session);
 287         iscsi_session_teardown(cls_session);
 288 }
 289 
 290 static struct iscsi_cls_conn *
 291 qedi_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid)
 292 {
 293         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
 294         struct qedi_ctx *qedi = iscsi_host_priv(shost);
 295         struct iscsi_cls_conn *cls_conn;
 296         struct qedi_conn *qedi_conn;
 297         struct iscsi_conn *conn;
 298 
 299         cls_conn = iscsi_conn_setup(cls_session, sizeof(*qedi_conn),
 300                                     cid);
 301         if (!cls_conn) {
 302                 QEDI_ERR(&qedi->dbg_ctx,
 303                          "conn_new: iscsi conn setup failed, cid=0x%x, cls_sess=%p!\n",
 304                          cid, cls_session);
 305                 return NULL;
 306         }
 307 
 308         conn = cls_conn->dd_data;
 309         qedi_conn = conn->dd_data;
 310         qedi_conn->cls_conn = cls_conn;
 311         qedi_conn->qedi = qedi;
 312         qedi_conn->ep = NULL;
 313         qedi_conn->active_cmd_count = 0;
 314         INIT_LIST_HEAD(&qedi_conn->active_cmd_list);
 315         spin_lock_init(&qedi_conn->list_lock);
 316 
 317         if (qedi_conn_alloc_login_resources(qedi, qedi_conn)) {
 318                 iscsi_conn_printk(KERN_ALERT, conn,
 319                                   "conn_new: login resc alloc failed, cid=0x%x, cls_sess=%p!!\n",
 320                                    cid, cls_session);
 321                 goto free_conn;
 322         }
 323 
 324         return cls_conn;
 325 
 326 free_conn:
 327         iscsi_conn_teardown(cls_conn);
 328         return NULL;
 329 }
 330 
 331 void qedi_mark_device_missing(struct iscsi_cls_session *cls_session)
 332 {
 333         iscsi_block_session(cls_session);
 334 }
 335 
 336 void qedi_mark_device_available(struct iscsi_cls_session *cls_session)
 337 {
 338         iscsi_unblock_session(cls_session);
 339 }
 340 
 341 static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx *qedi,
 342                                        struct qedi_conn *qedi_conn)
 343 {
 344         u32 iscsi_cid = qedi_conn->iscsi_conn_id;
 345 
 346         if (qedi->cid_que.conn_cid_tbl[iscsi_cid]) {
 347                 iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data,
 348                                   "conn bind - entry #%d not free\n",
 349                                   iscsi_cid);
 350                 return -EBUSY;
 351         }
 352 
 353         qedi->cid_que.conn_cid_tbl[iscsi_cid] = qedi_conn;
 354         return 0;
 355 }
 356 
 357 struct qedi_conn *qedi_get_conn_from_id(struct qedi_ctx *qedi, u32 iscsi_cid)
 358 {
 359         if (!qedi->cid_que.conn_cid_tbl) {
 360                 QEDI_ERR(&qedi->dbg_ctx, "missing conn<->cid table\n");
 361                 return NULL;
 362 
 363         } else if (iscsi_cid >= qedi->max_active_conns) {
 364                 QEDI_ERR(&qedi->dbg_ctx, "wrong cid #%d\n", iscsi_cid);
 365                 return NULL;
 366         }
 367         return qedi->cid_que.conn_cid_tbl[iscsi_cid];
 368 }
 369 
 370 static int qedi_conn_bind(struct iscsi_cls_session *cls_session,
 371                           struct iscsi_cls_conn *cls_conn,
 372                           u64 transport_fd, int is_leading)
 373 {
 374         struct iscsi_conn *conn = cls_conn->dd_data;
 375         struct qedi_conn *qedi_conn = conn->dd_data;
 376         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
 377         struct qedi_ctx *qedi = iscsi_host_priv(shost);
 378         struct qedi_endpoint *qedi_ep;
 379         struct iscsi_endpoint *ep;
 380 
 381         ep = iscsi_lookup_endpoint(transport_fd);
 382         if (!ep)
 383                 return -EINVAL;
 384 
 385         qedi_ep = ep->dd_data;
 386         if ((qedi_ep->state == EP_STATE_TCP_FIN_RCVD) ||
 387             (qedi_ep->state == EP_STATE_TCP_RST_RCVD))
 388                 return -EINVAL;
 389 
 390         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
 391                 return -EINVAL;
 392 
 393         qedi_ep->conn = qedi_conn;
 394         qedi_conn->ep = qedi_ep;
 395         qedi_conn->iscsi_conn_id = qedi_ep->iscsi_cid;
 396         qedi_conn->fw_cid = qedi_ep->fw_cid;
 397         qedi_conn->cmd_cleanup_req = 0;
 398         qedi_conn->cmd_cleanup_cmpl = 0;
 399 
 400         if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn))
 401                 return -EINVAL;
 402 
 403         spin_lock_init(&qedi_conn->tmf_work_lock);
 404         INIT_LIST_HEAD(&qedi_conn->tmf_work_list);
 405         init_waitqueue_head(&qedi_conn->wait_queue);
 406         return 0;
 407 }
 408 
 409 static int qedi_iscsi_update_conn(struct qedi_ctx *qedi,
 410                                   struct qedi_conn *qedi_conn)
 411 {
 412         struct qed_iscsi_params_update *conn_info;
 413         struct iscsi_cls_conn *cls_conn = qedi_conn->cls_conn;
 414         struct iscsi_conn *conn = cls_conn->dd_data;
 415         struct qedi_endpoint *qedi_ep;
 416         int rval;
 417 
 418         qedi_ep = qedi_conn->ep;
 419 
 420         conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL);
 421         if (!conn_info) {
 422                 QEDI_ERR(&qedi->dbg_ctx, "memory alloc failed\n");
 423                 return -ENOMEM;
 424         }
 425 
 426         conn_info->update_flag = 0;
 427 
 428         if (conn->hdrdgst_en)
 429                 SET_FIELD(conn_info->update_flag,
 430                           ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN, true);
 431         if (conn->datadgst_en)
 432                 SET_FIELD(conn_info->update_flag,
 433                           ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN, true);
 434         if (conn->session->initial_r2t_en)
 435                 SET_FIELD(conn_info->update_flag,
 436                           ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T,
 437                           true);
 438         if (conn->session->imm_data_en)
 439                 SET_FIELD(conn_info->update_flag,
 440                           ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA,
 441                           true);
 442 
 443         conn_info->max_seq_size = conn->session->max_burst;
 444         conn_info->max_recv_pdu_length = conn->max_recv_dlength;
 445         conn_info->max_send_pdu_length = conn->max_xmit_dlength;
 446         conn_info->first_seq_length = conn->session->first_burst;
 447         conn_info->exp_stat_sn = conn->exp_statsn;
 448 
 449         rval = qedi_ops->update_conn(qedi->cdev, qedi_ep->handle,
 450                                      conn_info);
 451         if (rval) {
 452                 rval = -ENXIO;
 453                 QEDI_ERR(&qedi->dbg_ctx, "Could not update connection\n");
 454         }
 455 
 456         kfree(conn_info);
 457         return rval;
 458 }
 459 
 460 static u16 qedi_calc_mss(u16 pmtu, u8 is_ipv6, u8 tcp_ts_en, u8 vlan_en)
 461 {
 462         u16 mss = 0;
 463         u16 hdrs = TCP_HDR_LEN;
 464 
 465         if (is_ipv6)
 466                 hdrs += IPV6_HDR_LEN;
 467         else
 468                 hdrs += IPV4_HDR_LEN;
 469 
 470         mss = pmtu - hdrs;
 471 
 472         if (!mss)
 473                 mss = DEF_MSS;
 474 
 475         return mss;
 476 }
 477 
 478 static int qedi_iscsi_offload_conn(struct qedi_endpoint *qedi_ep)
 479 {
 480         struct qedi_ctx *qedi = qedi_ep->qedi;
 481         struct qed_iscsi_params_offload *conn_info;
 482         int rval;
 483         int i;
 484 
 485         conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL);
 486         if (!conn_info) {
 487                 QEDI_ERR(&qedi->dbg_ctx,
 488                          "Failed to allocate memory ep=%p\n", qedi_ep);
 489                 return -ENOMEM;
 490         }
 491 
 492         ether_addr_copy(conn_info->src.mac, qedi_ep->src_mac);
 493         ether_addr_copy(conn_info->dst.mac, qedi_ep->dst_mac);
 494 
 495         conn_info->src.ip[0] = ntohl(qedi_ep->src_addr[0]);
 496         conn_info->dst.ip[0] = ntohl(qedi_ep->dst_addr[0]);
 497 
 498         if (qedi_ep->ip_type == TCP_IPV4) {
 499                 conn_info->ip_version = 0;
 500                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
 501                           "After ntohl: src_addr=%pI4, dst_addr=%pI4\n",
 502                           qedi_ep->src_addr, qedi_ep->dst_addr);
 503         } else {
 504                 for (i = 1; i < 4; i++) {
 505                         conn_info->src.ip[i] = ntohl(qedi_ep->src_addr[i]);
 506                         conn_info->dst.ip[i] = ntohl(qedi_ep->dst_addr[i]);
 507                 }
 508 
 509                 conn_info->ip_version = 1;
 510                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
 511                           "After ntohl: src_addr=%pI6, dst_addr=%pI6\n",
 512                           qedi_ep->src_addr, qedi_ep->dst_addr);
 513         }
 514 
 515         conn_info->src.port = qedi_ep->src_port;
 516         conn_info->dst.port = qedi_ep->dst_port;
 517 
 518         conn_info->layer_code = ISCSI_SLOW_PATH_LAYER_CODE;
 519         conn_info->sq_pbl_addr = qedi_ep->sq_pbl_dma;
 520         conn_info->vlan_id = qedi_ep->vlan_id;
 521 
 522         SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_TS_EN, 1);
 523         SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_EN, 1);
 524         SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_CNT_EN, 1);
 525         SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_KA_EN, 1);
 526 
 527         conn_info->default_cq = (qedi_ep->fw_cid % qedi->num_queues);
 528 
 529         conn_info->ka_max_probe_cnt = DEF_KA_MAX_PROBE_COUNT;
 530         conn_info->dup_ack_theshold = 3;
 531         conn_info->rcv_wnd = 65535;
 532 
 533         conn_info->ss_thresh = 65535;
 534         conn_info->srtt = 300;
 535         conn_info->rtt_var = 150;
 536         conn_info->flow_label = 0;
 537         conn_info->ka_timeout = DEF_KA_TIMEOUT;
 538         conn_info->ka_interval = DEF_KA_INTERVAL;
 539         conn_info->max_rt_time = DEF_MAX_RT_TIME;
 540         conn_info->ttl = DEF_TTL;
 541         conn_info->tos_or_tc = DEF_TOS;
 542         conn_info->remote_port = qedi_ep->dst_port;
 543         conn_info->local_port = qedi_ep->src_port;
 544 
 545         conn_info->mss = qedi_calc_mss(qedi_ep->pmtu,
 546                                        (qedi_ep->ip_type == TCP_IPV6),
 547                                        1, (qedi_ep->vlan_id != 0));
 548 
 549         conn_info->cwnd = DEF_MAX_CWND * conn_info->mss;
 550         conn_info->rcv_wnd_scale = 4;
 551         conn_info->da_timeout_value = 200;
 552         conn_info->ack_frequency = 2;
 553 
 554         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
 555                   "Default cq index [%d], mss [%d]\n",
 556                   conn_info->default_cq, conn_info->mss);
 557 
 558         rval = qedi_ops->offload_conn(qedi->cdev, qedi_ep->handle, conn_info);
 559         if (rval)
 560                 QEDI_ERR(&qedi->dbg_ctx, "offload_conn returned %d, ep=%p\n",
 561                          rval, qedi_ep);
 562 
 563         kfree(conn_info);
 564         return rval;
 565 }
 566 
 567 static int qedi_conn_start(struct iscsi_cls_conn *cls_conn)
 568 {
 569         struct iscsi_conn *conn = cls_conn->dd_data;
 570         struct qedi_conn *qedi_conn = conn->dd_data;
 571         struct qedi_ctx *qedi;
 572         int rval;
 573 
 574         qedi = qedi_conn->qedi;
 575 
 576         rval = qedi_iscsi_update_conn(qedi, qedi_conn);
 577         if (rval) {
 578                 iscsi_conn_printk(KERN_ALERT, conn,
 579                                   "conn_start: FW offload conn failed.\n");
 580                 rval = -EINVAL;
 581                 goto start_err;
 582         }
 583 
 584         clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
 585         qedi_conn->abrt_conn = 0;
 586 
 587         rval = iscsi_conn_start(cls_conn);
 588         if (rval) {
 589                 iscsi_conn_printk(KERN_ALERT, conn,
 590                                   "iscsi_conn_start: FW offload conn failed!!\n");
 591         }
 592 
 593 start_err:
 594         return rval;
 595 }
 596 
 597 static void qedi_conn_destroy(struct iscsi_cls_conn *cls_conn)
 598 {
 599         struct iscsi_conn *conn = cls_conn->dd_data;
 600         struct qedi_conn *qedi_conn = conn->dd_data;
 601         struct Scsi_Host *shost;
 602         struct qedi_ctx *qedi;
 603 
 604         shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
 605         qedi = iscsi_host_priv(shost);
 606 
 607         qedi_conn_free_login_resources(qedi, qedi_conn);
 608         iscsi_conn_teardown(cls_conn);
 609 }
 610 
 611 static int qedi_ep_get_param(struct iscsi_endpoint *ep,
 612                              enum iscsi_param param, char *buf)
 613 {
 614         struct qedi_endpoint *qedi_ep = ep->dd_data;
 615         int len;
 616 
 617         if (!qedi_ep)
 618                 return -ENOTCONN;
 619 
 620         switch (param) {
 621         case ISCSI_PARAM_CONN_PORT:
 622                 len = sprintf(buf, "%hu\n", qedi_ep->dst_port);
 623                 break;
 624         case ISCSI_PARAM_CONN_ADDRESS:
 625                 if (qedi_ep->ip_type == TCP_IPV4)
 626                         len = sprintf(buf, "%pI4\n", qedi_ep->dst_addr);
 627                 else
 628                         len = sprintf(buf, "%pI6\n", qedi_ep->dst_addr);
 629                 break;
 630         default:
 631                 return -ENOTCONN;
 632         }
 633 
 634         return len;
 635 }
 636 
 637 static int qedi_host_get_param(struct Scsi_Host *shost,
 638                                enum iscsi_host_param param, char *buf)
 639 {
 640         struct qedi_ctx *qedi;
 641         int len;
 642 
 643         qedi = iscsi_host_priv(shost);
 644 
 645         switch (param) {
 646         case ISCSI_HOST_PARAM_HWADDRESS:
 647                 len = sysfs_format_mac(buf, qedi->mac, 6);
 648                 break;
 649         case ISCSI_HOST_PARAM_NETDEV_NAME:
 650                 len = sprintf(buf, "host%d\n", shost->host_no);
 651                 break;
 652         case ISCSI_HOST_PARAM_IPADDRESS:
 653                 if (qedi->ip_type == TCP_IPV4)
 654                         len = sprintf(buf, "%pI4\n", qedi->src_ip);
 655                 else
 656                         len = sprintf(buf, "%pI6\n", qedi->src_ip);
 657                 break;
 658         default:
 659                 return iscsi_host_get_param(shost, param, buf);
 660         }
 661 
 662         return len;
 663 }
 664 
 665 static void qedi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 666                                 struct iscsi_stats *stats)
 667 {
 668         struct iscsi_conn *conn = cls_conn->dd_data;
 669         struct qed_iscsi_stats iscsi_stats;
 670         struct Scsi_Host *shost;
 671         struct qedi_ctx *qedi;
 672 
 673         shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
 674         qedi = iscsi_host_priv(shost);
 675         qedi_ops->get_stats(qedi->cdev, &iscsi_stats);
 676 
 677         conn->txdata_octets = iscsi_stats.iscsi_tx_bytes_cnt;
 678         conn->rxdata_octets = iscsi_stats.iscsi_rx_bytes_cnt;
 679         conn->dataout_pdus_cnt = (uint32_t)iscsi_stats.iscsi_tx_data_pdu_cnt;
 680         conn->datain_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_data_pdu_cnt;
 681         conn->r2t_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_r2t_pdu_cnt;
 682 
 683         stats->txdata_octets = conn->txdata_octets;
 684         stats->rxdata_octets = conn->rxdata_octets;
 685         stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
 686         stats->dataout_pdus = conn->dataout_pdus_cnt;
 687         stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
 688         stats->datain_pdus = conn->datain_pdus_cnt;
 689         stats->r2t_pdus = conn->r2t_pdus_cnt;
 690         stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
 691         stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
 692         stats->digest_err = 0;
 693         stats->timeout_err = 0;
 694         strcpy(stats->custom[0].desc, "eh_abort_cnt");
 695         stats->custom[0].value = conn->eh_abort_cnt;
 696         stats->custom_length = 1;
 697 }
 698 
 699 static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn *qedi_conn)
 700 {
 701         struct scsi_sge *bd_tbl;
 702 
 703         bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
 704 
 705         bd_tbl->sge_addr.hi =
 706                 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
 707         bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.req_dma_addr;
 708         bd_tbl->sge_len = qedi_conn->gen_pdu.req_wr_ptr -
 709                                 qedi_conn->gen_pdu.req_buf;
 710         bd_tbl = (struct scsi_sge  *)qedi_conn->gen_pdu.resp_bd_tbl;
 711         bd_tbl->sge_addr.hi =
 712                         (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
 713         bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.resp_dma_addr;
 714         bd_tbl->sge_len = ISCSI_DEF_MAX_RECV_SEG_LEN;
 715 }
 716 
 717 static int qedi_iscsi_send_generic_request(struct iscsi_task *task)
 718 {
 719         struct qedi_cmd *cmd = task->dd_data;
 720         struct qedi_conn *qedi_conn = cmd->conn;
 721         char *buf;
 722         int data_len;
 723         int rc = 0;
 724 
 725         qedi_iscsi_prep_generic_pdu_bd(qedi_conn);
 726         switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
 727         case ISCSI_OP_LOGIN:
 728                 qedi_send_iscsi_login(qedi_conn, task);
 729                 break;
 730         case ISCSI_OP_NOOP_OUT:
 731                 data_len = qedi_conn->gen_pdu.req_buf_size;
 732                 buf = qedi_conn->gen_pdu.req_buf;
 733                 if (data_len)
 734                         rc = qedi_send_iscsi_nopout(qedi_conn, task,
 735                                                     buf, data_len, 1);
 736                 else
 737                         rc = qedi_send_iscsi_nopout(qedi_conn, task,
 738                                                     NULL, 0, 1);
 739                 break;
 740         case ISCSI_OP_LOGOUT:
 741                 rc = qedi_send_iscsi_logout(qedi_conn, task);
 742                 break;
 743         case ISCSI_OP_SCSI_TMFUNC:
 744                 rc = qedi_iscsi_abort_work(qedi_conn, task);
 745                 break;
 746         case ISCSI_OP_TEXT:
 747                 rc = qedi_send_iscsi_text(qedi_conn, task);
 748                 break;
 749         default:
 750                 iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data,
 751                                   "unsupported op 0x%x\n", task->hdr->opcode);
 752         }
 753 
 754         return rc;
 755 }
 756 
 757 static int qedi_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
 758 {
 759         struct qedi_conn *qedi_conn = conn->dd_data;
 760         struct qedi_cmd *cmd = task->dd_data;
 761 
 762         memset(qedi_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN);
 763 
 764         qedi_conn->gen_pdu.req_buf_size = task->data_count;
 765 
 766         if (task->data_count) {
 767                 memcpy(qedi_conn->gen_pdu.req_buf, task->data,
 768                        task->data_count);
 769                 qedi_conn->gen_pdu.req_wr_ptr =
 770                         qedi_conn->gen_pdu.req_buf + task->data_count;
 771         }
 772 
 773         cmd->conn = conn->dd_data;
 774         cmd->scsi_cmd = NULL;
 775         return qedi_iscsi_send_generic_request(task);
 776 }
 777 
 778 static int qedi_task_xmit(struct iscsi_task *task)
 779 {
 780         struct iscsi_conn *conn = task->conn;
 781         struct qedi_conn *qedi_conn = conn->dd_data;
 782         struct qedi_cmd *cmd = task->dd_data;
 783         struct scsi_cmnd *sc = task->sc;
 784 
 785         cmd->state = 0;
 786         cmd->task = NULL;
 787         cmd->use_slowpath = false;
 788         cmd->conn = qedi_conn;
 789         cmd->task = task;
 790         cmd->io_cmd_in_list = false;
 791         INIT_LIST_HEAD(&cmd->io_cmd);
 792 
 793         if (!sc)
 794                 return qedi_mtask_xmit(conn, task);
 795 
 796         cmd->scsi_cmd = sc;
 797         return qedi_iscsi_send_ioreq(task);
 798 }
 799 
 800 static struct iscsi_endpoint *
 801 qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 802                 int non_blocking)
 803 {
 804         struct qedi_ctx *qedi;
 805         struct iscsi_endpoint *ep;
 806         struct qedi_endpoint *qedi_ep;
 807         struct sockaddr_in *addr;
 808         struct sockaddr_in6 *addr6;
 809         struct iscsi_path path_req;
 810         u32 msg_type = ISCSI_KEVENT_IF_DOWN;
 811         u32 iscsi_cid = QEDI_CID_RESERVED;
 812         u16 len = 0;
 813         char *buf = NULL;
 814         int ret, tmp;
 815 
 816         if (!shost) {
 817                 ret = -ENXIO;
 818                 QEDI_ERR(NULL, "shost is NULL\n");
 819                 return ERR_PTR(ret);
 820         }
 821 
 822         if (qedi_do_not_recover) {
 823                 ret = -ENOMEM;
 824                 return ERR_PTR(ret);
 825         }
 826 
 827         qedi = iscsi_host_priv(shost);
 828 
 829         if (test_bit(QEDI_IN_OFFLINE, &qedi->flags) ||
 830             test_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
 831                 ret = -ENOMEM;
 832                 return ERR_PTR(ret);
 833         }
 834 
 835         ep = iscsi_create_endpoint(sizeof(struct qedi_endpoint));
 836         if (!ep) {
 837                 QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n");
 838                 ret = -ENOMEM;
 839                 return ERR_PTR(ret);
 840         }
 841         qedi_ep = ep->dd_data;
 842         memset(qedi_ep, 0, sizeof(struct qedi_endpoint));
 843         qedi_ep->state = EP_STATE_IDLE;
 844         qedi_ep->iscsi_cid = (u32)-1;
 845         qedi_ep->qedi = qedi;
 846 
 847         if (dst_addr->sa_family == AF_INET) {
 848                 addr = (struct sockaddr_in *)dst_addr;
 849                 memcpy(qedi_ep->dst_addr, &addr->sin_addr.s_addr,
 850                        sizeof(struct in_addr));
 851                 qedi_ep->dst_port = ntohs(addr->sin_port);
 852                 qedi_ep->ip_type = TCP_IPV4;
 853                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
 854                           "dst_addr=%pI4, dst_port=%u\n",
 855                           qedi_ep->dst_addr, qedi_ep->dst_port);
 856         } else if (dst_addr->sa_family == AF_INET6) {
 857                 addr6 = (struct sockaddr_in6 *)dst_addr;
 858                 memcpy(qedi_ep->dst_addr, &addr6->sin6_addr,
 859                        sizeof(struct in6_addr));
 860                 qedi_ep->dst_port = ntohs(addr6->sin6_port);
 861                 qedi_ep->ip_type = TCP_IPV6;
 862                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
 863                           "dst_addr=%pI6, dst_port=%u\n",
 864                           qedi_ep->dst_addr, qedi_ep->dst_port);
 865         } else {
 866                 QEDI_ERR(&qedi->dbg_ctx, "Invalid endpoint\n");
 867         }
 868 
 869         if (atomic_read(&qedi->link_state) != QEDI_LINK_UP) {
 870                 QEDI_WARN(&qedi->dbg_ctx, "qedi link down\n");
 871                 ret = -ENXIO;
 872                 goto ep_conn_exit;
 873         }
 874 
 875         ret = qedi_alloc_sq(qedi, qedi_ep);
 876         if (ret)
 877                 goto ep_conn_exit;
 878 
 879         ret = qedi_ops->acquire_conn(qedi->cdev, &qedi_ep->handle,
 880                                      &qedi_ep->fw_cid, &qedi_ep->p_doorbell);
 881 
 882         if (ret) {
 883                 QEDI_ERR(&qedi->dbg_ctx, "Could not acquire connection\n");
 884                 ret = -ENXIO;
 885                 goto ep_free_sq;
 886         }
 887 
 888         iscsi_cid = qedi_ep->handle;
 889         qedi_ep->iscsi_cid = iscsi_cid;
 890 
 891         init_waitqueue_head(&qedi_ep->ofld_wait);
 892         init_waitqueue_head(&qedi_ep->tcp_ofld_wait);
 893         qedi_ep->state = EP_STATE_OFLDCONN_START;
 894         qedi->ep_tbl[iscsi_cid] = qedi_ep;
 895 
 896         buf = (char *)&path_req;
 897         len = sizeof(path_req);
 898         memset(&path_req, 0, len);
 899 
 900         msg_type = ISCSI_KEVENT_PATH_REQ;
 901         path_req.handle = (u64)qedi_ep->iscsi_cid;
 902         path_req.pmtu = qedi->ll2_mtu;
 903         qedi_ep->pmtu = qedi->ll2_mtu;
 904         if (qedi_ep->ip_type == TCP_IPV4) {
 905                 memcpy(&path_req.dst.v4_addr, &qedi_ep->dst_addr,
 906                        sizeof(struct in_addr));
 907                 path_req.ip_addr_len = 4;
 908         } else {
 909                 memcpy(&path_req.dst.v6_addr, &qedi_ep->dst_addr,
 910                        sizeof(struct in6_addr));
 911                 path_req.ip_addr_len = 16;
 912         }
 913 
 914         ret = iscsi_offload_mesg(shost, &qedi_iscsi_transport, msg_type, buf,
 915                                  len);
 916         if (ret) {
 917                 QEDI_ERR(&qedi->dbg_ctx,
 918                          "iscsi_offload_mesg() failed for cid=0x%x ret=%d\n",
 919                          iscsi_cid, ret);
 920                 goto ep_rel_conn;
 921         }
 922 
 923         atomic_inc(&qedi->num_offloads);
 924         return ep;
 925 
 926 ep_rel_conn:
 927         qedi->ep_tbl[iscsi_cid] = NULL;
 928         tmp = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle);
 929         if (tmp)
 930                 QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d\n",
 931                           tmp);
 932 ep_free_sq:
 933         qedi_free_sq(qedi, qedi_ep);
 934 ep_conn_exit:
 935         iscsi_destroy_endpoint(ep);
 936         return ERR_PTR(ret);
 937 }
 938 
 939 static int qedi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
 940 {
 941         struct qedi_endpoint *qedi_ep;
 942         int ret = 0;
 943 
 944         if (qedi_do_not_recover)
 945                 return 1;
 946 
 947         qedi_ep = ep->dd_data;
 948         if (qedi_ep->state == EP_STATE_IDLE ||
 949             qedi_ep->state == EP_STATE_OFLDCONN_NONE ||
 950             qedi_ep->state == EP_STATE_OFLDCONN_FAILED)
 951                 return -1;
 952 
 953         if (qedi_ep->state == EP_STATE_OFLDCONN_COMPL)
 954                 ret = 1;
 955 
 956         ret = wait_event_interruptible_timeout(qedi_ep->ofld_wait,
 957                                                QEDI_OFLD_WAIT_STATE(qedi_ep),
 958                                                msecs_to_jiffies(timeout_ms));
 959 
 960         if (qedi_ep->state == EP_STATE_OFLDCONN_FAILED)
 961                 ret = -1;
 962 
 963         if (ret > 0)
 964                 return 1;
 965         else if (!ret)
 966                 return 0;
 967         else
 968                 return ret;
 969 }
 970 
 971 static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn)
 972 {
 973         struct qedi_cmd *cmd, *cmd_tmp;
 974 
 975         list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
 976                                  io_cmd) {
 977                 list_del_init(&cmd->io_cmd);
 978                 qedi_conn->active_cmd_count--;
 979         }
 980 }
 981 
 982 static void qedi_ep_disconnect(struct iscsi_endpoint *ep)
 983 {
 984         struct qedi_endpoint *qedi_ep;
 985         struct qedi_conn *qedi_conn = NULL;
 986         struct iscsi_conn *conn = NULL;
 987         struct qedi_ctx *qedi;
 988         int ret = 0;
 989         int wait_delay;
 990         int abrt_conn = 0;
 991         int count = 10;
 992 
 993         wait_delay = 60 * HZ + DEF_MAX_RT_TIME;
 994         qedi_ep = ep->dd_data;
 995         qedi = qedi_ep->qedi;
 996 
 997         if (qedi_ep->state == EP_STATE_OFLDCONN_START)
 998                 goto ep_exit_recover;
 999 
1000         flush_work(&qedi_ep->offload_work);
1001 
1002         if (qedi_ep->conn) {
1003                 qedi_conn = qedi_ep->conn;
1004                 conn = qedi_conn->cls_conn->dd_data;
1005                 iscsi_suspend_queue(conn);
1006                 abrt_conn = qedi_conn->abrt_conn;
1007 
1008                 while (count--) {
1009                         if (!test_bit(QEDI_CONN_FW_CLEANUP,
1010                                       &qedi_conn->flags)) {
1011                                 break;
1012                         }
1013                         msleep(1000);
1014                 }
1015 
1016                 if (test_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
1017                         if (qedi_do_not_recover) {
1018                                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1019                                           "Do not recover cid=0x%x\n",
1020                                           qedi_ep->iscsi_cid);
1021                                 goto ep_exit_recover;
1022                         }
1023                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1024                                   "Reset recovery cid=0x%x, qedi_ep=%p, state=0x%x\n",
1025                                   qedi_ep->iscsi_cid, qedi_ep, qedi_ep->state);
1026                         qedi_cleanup_active_cmd_list(qedi_conn);
1027                         goto ep_release_conn;
1028                 }
1029         }
1030 
1031         if (qedi_do_not_recover)
1032                 goto ep_exit_recover;
1033 
1034         switch (qedi_ep->state) {
1035         case EP_STATE_OFLDCONN_START:
1036         case EP_STATE_OFLDCONN_NONE:
1037                 goto ep_release_conn;
1038         case EP_STATE_OFLDCONN_FAILED:
1039                         break;
1040         case EP_STATE_OFLDCONN_COMPL:
1041                 if (unlikely(!qedi_conn))
1042                         break;
1043 
1044                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1045                           "Active cmd count=%d, abrt_conn=%d, ep state=0x%x, cid=0x%x, qedi_conn=%p\n",
1046                           qedi_conn->active_cmd_count, abrt_conn,
1047                           qedi_ep->state,
1048                           qedi_ep->iscsi_cid,
1049                           qedi_ep->conn
1050                           );
1051 
1052                 if (!qedi_conn->active_cmd_count)
1053                         abrt_conn = 0;
1054                 else
1055                         abrt_conn = 1;
1056 
1057                 if (abrt_conn)
1058                         qedi_clearsq(qedi, qedi_conn, NULL);
1059                 break;
1060         default:
1061                 break;
1062         }
1063 
1064         qedi_ep->state = EP_STATE_DISCONN_START;
1065         ret = qedi_ops->destroy_conn(qedi->cdev, qedi_ep->handle, abrt_conn);
1066         if (ret) {
1067                 QEDI_WARN(&qedi->dbg_ctx,
1068                           "destroy_conn failed returned %d\n", ret);
1069         } else {
1070                 ret = wait_event_interruptible_timeout(
1071                                         qedi_ep->tcp_ofld_wait,
1072                                         (qedi_ep->state !=
1073                                          EP_STATE_DISCONN_START),
1074                                         wait_delay);
1075                 if ((ret <= 0) || (qedi_ep->state == EP_STATE_DISCONN_START)) {
1076                         QEDI_WARN(&qedi->dbg_ctx,
1077                                   "Destroy conn timedout or interrupted, ret=%d, delay=%d, cid=0x%x\n",
1078                                   ret, wait_delay, qedi_ep->iscsi_cid);
1079                 }
1080         }
1081 
1082 ep_release_conn:
1083         ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle);
1084         if (ret)
1085                 QEDI_WARN(&qedi->dbg_ctx,
1086                           "release_conn returned %d, cid=0x%x\n",
1087                           ret, qedi_ep->iscsi_cid);
1088 ep_exit_recover:
1089         qedi_ep->state = EP_STATE_IDLE;
1090         qedi->ep_tbl[qedi_ep->iscsi_cid] = NULL;
1091         qedi->cid_que.conn_cid_tbl[qedi_ep->iscsi_cid] = NULL;
1092         qedi_free_id(&qedi->lcl_port_tbl, qedi_ep->src_port);
1093         qedi_free_sq(qedi, qedi_ep);
1094 
1095         if (qedi_conn)
1096                 qedi_conn->ep = NULL;
1097 
1098         qedi_ep->conn = NULL;
1099         qedi_ep->qedi = NULL;
1100         atomic_dec(&qedi->num_offloads);
1101 
1102         iscsi_destroy_endpoint(ep);
1103 }
1104 
1105 static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid)
1106 {
1107         struct qed_dev *cdev = qedi->cdev;
1108         struct qedi_uio_dev *udev;
1109         struct qedi_uio_ctrl *uctrl;
1110         struct sk_buff *skb;
1111         u32 len;
1112         int rc = 0;
1113 
1114         udev = qedi->udev;
1115         if (!udev) {
1116                 QEDI_ERR(&qedi->dbg_ctx, "udev is NULL.\n");
1117                 return -EINVAL;
1118         }
1119 
1120         uctrl = (struct qedi_uio_ctrl *)udev->uctrl;
1121         if (!uctrl) {
1122                 QEDI_ERR(&qedi->dbg_ctx, "uctlr is NULL.\n");
1123                 return -EINVAL;
1124         }
1125 
1126         len = uctrl->host_tx_pkt_len;
1127         if (!len) {
1128                 QEDI_ERR(&qedi->dbg_ctx, "Invalid len %u\n", len);
1129                 return -EINVAL;
1130         }
1131 
1132         skb = alloc_skb(len, GFP_ATOMIC);
1133         if (!skb) {
1134                 QEDI_ERR(&qedi->dbg_ctx, "alloc_skb failed\n");
1135                 return -EINVAL;
1136         }
1137 
1138         skb_put(skb, len);
1139         memcpy(skb->data, udev->tx_pkt, len);
1140         skb->ip_summed = CHECKSUM_NONE;
1141 
1142         if (vlanid)
1143                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid);
1144 
1145         rc = qedi_ops->ll2->start_xmit(cdev, skb, 0);
1146         if (rc) {
1147                 QEDI_ERR(&qedi->dbg_ctx, "ll2 start_xmit returned %d\n",
1148                          rc);
1149                 kfree_skb(skb);
1150         }
1151 
1152         uctrl->host_tx_pkt_len = 0;
1153         uctrl->hw_tx_cons++;
1154 
1155         return rc;
1156 }
1157 
1158 static void qedi_offload_work(struct work_struct *work)
1159 {
1160         struct qedi_endpoint *qedi_ep =
1161                 container_of(work, struct qedi_endpoint, offload_work);
1162         struct qedi_ctx *qedi;
1163         int wait_delay = 5 * HZ;
1164         int ret;
1165 
1166         qedi = qedi_ep->qedi;
1167 
1168         ret = qedi_iscsi_offload_conn(qedi_ep);
1169         if (ret) {
1170                 QEDI_ERR(&qedi->dbg_ctx,
1171                          "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n",
1172                          qedi_ep->iscsi_cid, qedi_ep, ret);
1173                 qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
1174                 return;
1175         }
1176 
1177         ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait,
1178                                                (qedi_ep->state ==
1179                                                EP_STATE_OFLDCONN_COMPL),
1180                                                wait_delay);
1181         if ((ret <= 0) || (qedi_ep->state != EP_STATE_OFLDCONN_COMPL)) {
1182                 qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
1183                 QEDI_ERR(&qedi->dbg_ctx,
1184                          "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n",
1185                          qedi_ep->iscsi_cid, qedi_ep);
1186         }
1187 }
1188 
1189 static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data)
1190 {
1191         struct qedi_ctx *qedi;
1192         struct qedi_endpoint *qedi_ep;
1193         int ret = 0;
1194         u32 iscsi_cid;
1195         u16 port_id = 0;
1196 
1197         if (!shost) {
1198                 ret = -ENXIO;
1199                 QEDI_ERR(NULL, "shost is NULL\n");
1200                 return ret;
1201         }
1202 
1203         if (strcmp(shost->hostt->proc_name, "qedi")) {
1204                 ret = -ENXIO;
1205                 QEDI_ERR(NULL, "shost %s is invalid\n",
1206                          shost->hostt->proc_name);
1207                 return ret;
1208         }
1209 
1210         qedi = iscsi_host_priv(shost);
1211         if (path_data->handle == QEDI_PATH_HANDLE) {
1212                 ret = qedi_data_avail(qedi, path_data->vlan_id);
1213                 goto set_path_exit;
1214         }
1215 
1216         iscsi_cid = (u32)path_data->handle;
1217         qedi_ep = qedi->ep_tbl[iscsi_cid];
1218         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1219                   "iscsi_cid=0x%x, qedi_ep=%p\n", iscsi_cid, qedi_ep);
1220         if (!qedi_ep) {
1221                 ret = -EINVAL;
1222                 goto set_path_exit;
1223         }
1224 
1225         if (!is_valid_ether_addr(&path_data->mac_addr[0])) {
1226                 QEDI_NOTICE(&qedi->dbg_ctx, "dst mac NOT VALID\n");
1227                 qedi_ep->state = EP_STATE_OFLDCONN_NONE;
1228                 ret = -EIO;
1229                 goto set_path_exit;
1230         }
1231 
1232         ether_addr_copy(&qedi_ep->src_mac[0], &qedi->mac[0]);
1233         ether_addr_copy(&qedi_ep->dst_mac[0], &path_data->mac_addr[0]);
1234 
1235         qedi_ep->vlan_id = path_data->vlan_id;
1236         if (path_data->pmtu < DEF_PATH_MTU) {
1237                 qedi_ep->pmtu = qedi->ll2_mtu;
1238                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1239                           "MTU cannot be %u, using default MTU %u\n",
1240                            path_data->pmtu, qedi_ep->pmtu);
1241         }
1242 
1243         if (path_data->pmtu != qedi->ll2_mtu) {
1244                 if (path_data->pmtu > JUMBO_MTU) {
1245                         ret = -EINVAL;
1246                         QEDI_ERR(NULL, "Invalid MTU %u\n", path_data->pmtu);
1247                         goto set_path_exit;
1248                 }
1249 
1250                 qedi_reset_host_mtu(qedi, path_data->pmtu);
1251                 qedi_ep->pmtu = qedi->ll2_mtu;
1252         }
1253 
1254         port_id = qedi_ep->src_port;
1255         if (port_id >= QEDI_LOCAL_PORT_MIN &&
1256             port_id < QEDI_LOCAL_PORT_MAX) {
1257                 if (qedi_alloc_id(&qedi->lcl_port_tbl, port_id))
1258                         port_id = 0;
1259         } else {
1260                 port_id = 0;
1261         }
1262 
1263         if (!port_id) {
1264                 port_id = qedi_alloc_new_id(&qedi->lcl_port_tbl);
1265                 if (port_id == QEDI_LOCAL_PORT_INVALID) {
1266                         QEDI_ERR(&qedi->dbg_ctx,
1267                                  "Failed to allocate port id for iscsi_cid=0x%x\n",
1268                                  iscsi_cid);
1269                         ret = -ENOMEM;
1270                         goto set_path_exit;
1271                 }
1272         }
1273 
1274         qedi_ep->src_port = port_id;
1275 
1276         if (qedi_ep->ip_type == TCP_IPV4) {
1277                 memcpy(&qedi_ep->src_addr[0], &path_data->src.v4_addr,
1278                        sizeof(struct in_addr));
1279                 memcpy(&qedi->src_ip[0], &path_data->src.v4_addr,
1280                        sizeof(struct in_addr));
1281                 qedi->ip_type = TCP_IPV4;
1282 
1283                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1284                           "src addr:port=%pI4:%u, dst addr:port=%pI4:%u\n",
1285                           qedi_ep->src_addr, qedi_ep->src_port,
1286                           qedi_ep->dst_addr, qedi_ep->dst_port);
1287         } else {
1288                 memcpy(&qedi_ep->src_addr[0], &path_data->src.v6_addr,
1289                        sizeof(struct in6_addr));
1290                 memcpy(&qedi->src_ip[0], &path_data->src.v6_addr,
1291                        sizeof(struct in6_addr));
1292                 qedi->ip_type = TCP_IPV6;
1293 
1294                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1295                           "src addr:port=%pI6:%u, dst addr:port=%pI6:%u\n",
1296                           qedi_ep->src_addr, qedi_ep->src_port,
1297                           qedi_ep->dst_addr, qedi_ep->dst_port);
1298         }
1299 
1300         INIT_WORK(&qedi_ep->offload_work, qedi_offload_work);
1301         queue_work(qedi->offload_thread, &qedi_ep->offload_work);
1302 
1303         ret = 0;
1304 
1305 set_path_exit:
1306         return ret;
1307 }
1308 
1309 static umode_t qedi_attr_is_visible(int param_type, int param)
1310 {
1311         switch (param_type) {
1312         case ISCSI_HOST_PARAM:
1313                 switch (param) {
1314                 case ISCSI_HOST_PARAM_NETDEV_NAME:
1315                 case ISCSI_HOST_PARAM_HWADDRESS:
1316                 case ISCSI_HOST_PARAM_IPADDRESS:
1317                         return 0444;
1318                 default:
1319                         return 0;
1320                 }
1321         case ISCSI_PARAM:
1322                 switch (param) {
1323                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1324                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1325                 case ISCSI_PARAM_HDRDGST_EN:
1326                 case ISCSI_PARAM_DATADGST_EN:
1327                 case ISCSI_PARAM_CONN_ADDRESS:
1328                 case ISCSI_PARAM_CONN_PORT:
1329                 case ISCSI_PARAM_EXP_STATSN:
1330                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1331                 case ISCSI_PARAM_PERSISTENT_PORT:
1332                 case ISCSI_PARAM_PING_TMO:
1333                 case ISCSI_PARAM_RECV_TMO:
1334                 case ISCSI_PARAM_INITIAL_R2T_EN:
1335                 case ISCSI_PARAM_MAX_R2T:
1336                 case ISCSI_PARAM_IMM_DATA_EN:
1337                 case ISCSI_PARAM_FIRST_BURST:
1338                 case ISCSI_PARAM_MAX_BURST:
1339                 case ISCSI_PARAM_PDU_INORDER_EN:
1340                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1341                 case ISCSI_PARAM_ERL:
1342                 case ISCSI_PARAM_TARGET_NAME:
1343                 case ISCSI_PARAM_TPGT:
1344                 case ISCSI_PARAM_USERNAME:
1345                 case ISCSI_PARAM_PASSWORD:
1346                 case ISCSI_PARAM_USERNAME_IN:
1347                 case ISCSI_PARAM_PASSWORD_IN:
1348                 case ISCSI_PARAM_FAST_ABORT:
1349                 case ISCSI_PARAM_ABORT_TMO:
1350                 case ISCSI_PARAM_LU_RESET_TMO:
1351                 case ISCSI_PARAM_TGT_RESET_TMO:
1352                 case ISCSI_PARAM_IFACE_NAME:
1353                 case ISCSI_PARAM_INITIATOR_NAME:
1354                 case ISCSI_PARAM_BOOT_ROOT:
1355                 case ISCSI_PARAM_BOOT_NIC:
1356                 case ISCSI_PARAM_BOOT_TARGET:
1357                         return 0444;
1358                 default:
1359                         return 0;
1360                 }
1361         }
1362 
1363         return 0;
1364 }
1365 
1366 static void qedi_cleanup_task(struct iscsi_task *task)
1367 {
1368         if (!task->sc || task->state == ISCSI_TASK_PENDING) {
1369                 QEDI_INFO(NULL, QEDI_LOG_IO, "Returning ref_cnt=%d\n",
1370                           refcount_read(&task->refcount));
1371                 return;
1372         }
1373 
1374         qedi_iscsi_unmap_sg_list(task->dd_data);
1375 }
1376 
1377 struct iscsi_transport qedi_iscsi_transport = {
1378         .owner = THIS_MODULE,
1379         .name = QEDI_MODULE_NAME,
1380         .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_MULTI_R2T | CAP_DATADGST |
1381                 CAP_DATA_PATH_OFFLOAD | CAP_TEXT_NEGO,
1382         .create_session = qedi_session_create,
1383         .destroy_session = qedi_session_destroy,
1384         .create_conn = qedi_conn_create,
1385         .bind_conn = qedi_conn_bind,
1386         .start_conn = qedi_conn_start,
1387         .stop_conn = iscsi_conn_stop,
1388         .destroy_conn = qedi_conn_destroy,
1389         .set_param = iscsi_set_param,
1390         .get_ep_param = qedi_ep_get_param,
1391         .get_conn_param = iscsi_conn_get_param,
1392         .get_session_param = iscsi_session_get_param,
1393         .get_host_param = qedi_host_get_param,
1394         .send_pdu = iscsi_conn_send_pdu,
1395         .get_stats = qedi_conn_get_stats,
1396         .xmit_task = qedi_task_xmit,
1397         .cleanup_task = qedi_cleanup_task,
1398         .session_recovery_timedout = iscsi_session_recovery_timedout,
1399         .ep_connect = qedi_ep_connect,
1400         .ep_poll = qedi_ep_poll,
1401         .ep_disconnect = qedi_ep_disconnect,
1402         .set_path = qedi_set_path,
1403         .attr_is_visible = qedi_attr_is_visible,
1404 };
1405 
1406 void qedi_start_conn_recovery(struct qedi_ctx *qedi,
1407                               struct qedi_conn *qedi_conn)
1408 {
1409         struct iscsi_cls_session *cls_sess;
1410         struct iscsi_cls_conn *cls_conn;
1411         struct iscsi_conn *conn;
1412 
1413         cls_conn = qedi_conn->cls_conn;
1414         conn = cls_conn->dd_data;
1415         cls_sess = iscsi_conn_to_session(cls_conn);
1416 
1417         if (iscsi_is_session_online(cls_sess)) {
1418                 qedi_conn->abrt_conn = 1;
1419                 QEDI_ERR(&qedi->dbg_ctx,
1420                          "Failing connection, state=0x%x, cid=0x%x\n",
1421                          conn->session->state, qedi_conn->iscsi_conn_id);
1422                 iscsi_conn_failure(qedi_conn->cls_conn->dd_data,
1423                                    ISCSI_ERR_CONN_FAILED);
1424         }
1425 }
1426 
1427 static const struct {
1428         enum iscsi_error_types error_code;
1429         char *err_string;
1430 } qedi_iscsi_error[] = {
1431         { ISCSI_STATUS_NONE,
1432           "tcp_error none"
1433         },
1434         { ISCSI_CONN_ERROR_TASK_CID_MISMATCH,
1435           "task cid mismatch"
1436         },
1437         { ISCSI_CONN_ERROR_TASK_NOT_VALID,
1438           "invalid task"
1439         },
1440         { ISCSI_CONN_ERROR_RQ_RING_IS_FULL,
1441           "rq ring full"
1442         },
1443         { ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL,
1444           "cmdq ring full"
1445         },
1446         { ISCSI_CONN_ERROR_HQE_CACHING_FAILED,
1447           "sge caching failed"
1448         },
1449         { ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR,
1450           "hdr digest error"
1451         },
1452         { ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR,
1453           "local cmpl error"
1454         },
1455         { ISCSI_CONN_ERROR_DATA_OVERRUN,
1456           "invalid task"
1457         },
1458         { ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR,
1459           "out of sge error"
1460         },
1461         { ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR,
1462           "tcp ip fragment error"
1463         },
1464         { ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN,
1465           "AHS len protocol error"
1466         },
1467         { ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE,
1468           "itt out of range error"
1469         },
1470         { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE,
1471           "data seg more than pdu size"
1472         },
1473         { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE,
1474           "invalid opcode"
1475         },
1476         { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE,
1477           "invalid opcode before update"
1478         },
1479         { ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL,
1480           "unexpected opcode"
1481         },
1482         { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA,
1483           "r2t carries no data"
1484         },
1485         { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN,
1486           "data sn error"
1487         },
1488         { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT,
1489           "data TTT error"
1490         },
1491         { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT,
1492           "r2t TTT error"
1493         },
1494         { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET,
1495           "buffer offset error"
1496         },
1497         { ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO,
1498           "buffer offset ooo"
1499         },
1500         { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN,
1501           "data seg len 0"
1502         },
1503         { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0,
1504           "data xer len error"
1505         },
1506         { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1,
1507           "data xer len1 error"
1508         },
1509         { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2,
1510           "data xer len2 error"
1511         },
1512         { ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN,
1513           "protocol lun error"
1514         },
1515         { ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO,
1516           "f bit zero error"
1517         },
1518         { ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN,
1519           "exp stat sn error"
1520         },
1521         { ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO,
1522           "dsl not zero error"
1523         },
1524         { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL,
1525           "invalid dsl"
1526         },
1527         { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG,
1528           "data seg len too big"
1529         },
1530         { ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT,
1531           "outstanding r2t count error"
1532         },
1533         { ISCSI_CONN_ERROR_SENSE_DATA_LENGTH,
1534           "sense datalen error"
1535         },
1536 };
1537 
1538 char *qedi_get_iscsi_error(enum iscsi_error_types err_code)
1539 {
1540         int i;
1541         char *msg = NULL;
1542 
1543         for (i = 0; i < ARRAY_SIZE(qedi_iscsi_error); i++) {
1544                 if (qedi_iscsi_error[i].error_code == err_code) {
1545                         msg = qedi_iscsi_error[i].err_string;
1546                         break;
1547                 }
1548         }
1549         return msg;
1550 }
1551 
1552 void qedi_process_iscsi_error(struct qedi_endpoint *ep,
1553                               struct iscsi_eqe_data *data)
1554 {
1555         struct qedi_conn *qedi_conn;
1556         struct qedi_ctx *qedi;
1557         char warn_notice[] = "iscsi_warning";
1558         char error_notice[] = "iscsi_error";
1559         char unknown_msg[] = "Unknown error";
1560         char *message;
1561         int need_recovery = 0;
1562         u32 err_mask = 0;
1563         char *msg;
1564 
1565         if (!ep)
1566                 return;
1567 
1568         qedi_conn = ep->conn;
1569         if (!qedi_conn)
1570                 return;
1571 
1572         qedi = ep->qedi;
1573 
1574         QEDI_ERR(&qedi->dbg_ctx, "async event iscsi error:0x%x\n",
1575                  data->error_code);
1576 
1577         if (err_mask) {
1578                 need_recovery = 0;
1579                 message = warn_notice;
1580         } else {
1581                 need_recovery = 1;
1582                 message = error_notice;
1583         }
1584 
1585         msg = qedi_get_iscsi_error(data->error_code);
1586         if (!msg) {
1587                 need_recovery = 0;
1588                 msg = unknown_msg;
1589         }
1590 
1591         iscsi_conn_printk(KERN_ALERT,
1592                           qedi_conn->cls_conn->dd_data,
1593                           "qedi: %s - %s\n", message, msg);
1594 
1595         if (need_recovery)
1596                 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1597 }
1598 
1599 void qedi_process_tcp_error(struct qedi_endpoint *ep,
1600                             struct iscsi_eqe_data *data)
1601 {
1602         struct qedi_conn *qedi_conn;
1603 
1604         if (!ep)
1605                 return;
1606 
1607         qedi_conn = ep->conn;
1608         if (!qedi_conn)
1609                 return;
1610 
1611         QEDI_ERR(&ep->qedi->dbg_ctx, "async event TCP error:0x%x\n",
1612                  data->error_code);
1613 
1614         qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1615 }

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