drivers/scsi/bnx2i/bnx2i_iscsi.c

   1 /*
   2  * bnx2i_iscsi.c: Broadcom NetXtreme II iSCSI driver.
   3  *
   4  * Copyright (c) 2006 - 2011 Broadcom Corporation
   5  * Copyright (c) 2007, 2008 Red Hat, Inc.  All rights reserved.
   6  * Copyright (c) 2007, 2008 Mike Christie
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation.
  11  *
  12  * Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
  13  * Maintained by: Eddie Wai (eddie.wai@broadcom.com)
  14  */
  15
  16 #include <linux/slab.h>
  17 #include <scsi/scsi_tcq.h>
  18 #include <scsi/libiscsi.h>
  19 #include "bnx2i.h"
  20
  21 struct scsi_transport_template *bnx2i_scsi_xport_template;
  22 struct iscsi_transport bnx2i_iscsi_transport;
  23 static struct scsi_host_template bnx2i_host_template;
  24
  25 /*
  26  * Global endpoint resource info
  27  */
  28 static DEFINE_SPINLOCK(bnx2i_resc_lock); /* protects global resources */
  29
  30 DECLARE_PER_CPU(struct bnx2i_percpu_s, bnx2i_percpu);
  31
  32 static int bnx2i_adapter_ready(struct bnx2i_hba *hba)
  33 {
  34         int retval = 0;
  35
  36         if (!hba || !test_bit(ADAPTER_STATE_UP, &hba->adapter_state) ||
  37             test_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state) ||
  38             test_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state))
  39                 retval = -EPERM;
  40         return retval;
  41 }
  42
  43 /**
  44  * bnx2i_get_write_cmd_bd_idx - identifies various BD bookmarks
  45  * @cmd:                iscsi cmd struct pointer
  46  * @buf_off:            absolute buffer offset
  47  * @start_bd_off:       u32 pointer to return the offset within the BD
  48  *                      indicated by 'start_bd_idx' on which 'buf_off' falls
  49  * @start_bd_idx:       index of the BD on which 'buf_off' falls
  50  *
  51  * identifies & marks various bd info for scsi command's imm data,
  52  * unsolicited data and the first solicited data seq.
  53  */
  54 static void bnx2i_get_write_cmd_bd_idx(struct bnx2i_cmd *cmd, u32 buf_off,
  55                                        u32 *start_bd_off, u32 *start_bd_idx)
  56 {
  57         struct iscsi_bd *bd_tbl = cmd->io_tbl.bd_tbl;
  58         u32 cur_offset = 0;
  59         u32 cur_bd_idx = 0;
  60
  61         if (buf_off) {
  62                 while (buf_off >= (cur_offset + bd_tbl->buffer_length)) {
  63                         cur_offset += bd_tbl->buffer_length;
  64                         cur_bd_idx++;
  65                         bd_tbl++;
  66                 }
  67         }
  68
  69         *start_bd_off = buf_off - cur_offset;
  70         *start_bd_idx = cur_bd_idx;
  71 }
  72
  73 /**
  74  * bnx2i_setup_write_cmd_bd_info - sets up BD various information
  75  * @task:       transport layer's cmd struct pointer
  76  *
  77  * identifies & marks various bd info for scsi command's immediate data,
  78  * unsolicited data and first solicited data seq which includes BD start
  79  * index & BD buf off. his function takes into account iscsi parameter such
  80  * as immediate data and unsolicited data is support on this connection.
  81  */
  82 static void bnx2i_setup_write_cmd_bd_info(struct iscsi_task *task)
  83 {
  84         struct bnx2i_cmd *cmd = task->dd_data;
  85         u32 start_bd_offset;
  86         u32 start_bd_idx;
  87         u32 buffer_offset = 0;
  88         u32 cmd_len = cmd->req.total_data_transfer_length;
  89
  90         /* if ImmediateData is turned off & IntialR2T is turned on,
  91          * there will be no immediate or unsolicited data, just return.
  92          */
  93         if (!iscsi_task_has_unsol_data(task) && !task->imm_count)
  94                 return;
  95
  96         /* Immediate data */
  97         buffer_offset += task->imm_count;
  98         if (task->imm_count == cmd_len)
  99                 return;
 100
 101         if (iscsi_task_has_unsol_data(task)) {
 102                 bnx2i_get_write_cmd_bd_idx(cmd, buffer_offset,
 103                                            &start_bd_offset, &start_bd_idx);
 104                 cmd->req.ud_buffer_offset = start_bd_offset;
 105                 cmd->req.ud_start_bd_index = start_bd_idx;
 106                 buffer_offset += task->unsol_r2t.data_length;
 107         }
 108
 109         if (buffer_offset != cmd_len) {
 110                 bnx2i_get_write_cmd_bd_idx(cmd, buffer_offset,
 111                                            &start_bd_offset, &start_bd_idx);
 112                 if ((start_bd_offset > task->conn->session->first_burst) ||
 113                     (start_bd_idx > scsi_sg_count(cmd->scsi_cmd))) {
 114                         int i = 0;
 115
 116                         iscsi_conn_printk(KERN_ALERT, task->conn,
 117                                           "bnx2i- error, buf offset 0x%x "
 118                                           "bd_valid %d use_sg %d\n",
 119                                           buffer_offset, cmd->io_tbl.bd_valid,
 120                                           scsi_sg_count(cmd->scsi_cmd));
 121                         for (i = 0; i < cmd->io_tbl.bd_valid; i++)
 122                                 iscsi_conn_printk(KERN_ALERT, task->conn,
 123                                                   "bnx2i err, bd[%d]: len %x\n",
 124                                                   i, cmd->io_tbl.bd_tbl[i].\
 125                                                   buffer_length);
 126                 }
 127                 cmd->req.sd_buffer_offset = start_bd_offset;
 128                 cmd->req.sd_start_bd_index = start_bd_idx;
 129         }
 130 }
 131
 132
 133
 134 /**
 135  * bnx2i_map_scsi_sg - maps IO buffer and prepares the BD table
 136  * @hba:        adapter instance
 137  * @cmd:        iscsi cmd struct pointer
 138  *
 139  * map SG list
 140  */
 141 static int bnx2i_map_scsi_sg(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd)
 142 {
 143         struct scsi_cmnd *sc = cmd->scsi_cmd;
 144         struct iscsi_bd *bd = cmd->io_tbl.bd_tbl;
 145         struct scatterlist *sg;
 146         int byte_count = 0;
 147         int bd_count = 0;
 148         int sg_count;
 149         int sg_len;
 150         u64 addr;
 151         int i;
 152
 153         BUG_ON(scsi_sg_count(sc) > ISCSI_MAX_BDS_PER_CMD);
 154
 155         sg_count = scsi_dma_map(sc);
 156
 157         scsi_for_each_sg(sc, sg, sg_count, i) {
 158                 sg_len = sg_dma_len(sg);
 159                 addr = (u64) sg_dma_address(sg);
 160                 bd[bd_count].buffer_addr_lo = addr & 0xffffffff;
 161                 bd[bd_count].buffer_addr_hi = addr >> 32;
 162                 bd[bd_count].buffer_length = sg_len;
 163                 bd[bd_count].flags = 0;
 164                 if (bd_count == 0)
 165                         bd[bd_count].flags = ISCSI_BD_FIRST_IN_BD_CHAIN;
 166
 167                 byte_count += sg_len;
 168                 bd_count++;
 169         }
 170
 171         if (bd_count)
 172                 bd[bd_count - 1].flags |= ISCSI_BD_LAST_IN_BD_CHAIN;
 173
 174         BUG_ON(byte_count != scsi_bufflen(sc));
 175         return bd_count;
 176 }
 177
 178 /**
 179  * bnx2i_iscsi_map_sg_list - maps SG list
 180  * @cmd:        iscsi cmd struct pointer
 181  *
 182  * creates BD list table for the command
 183  */
 184 static void bnx2i_iscsi_map_sg_list(struct bnx2i_cmd *cmd)
 185 {
 186         int bd_count;
 187
 188         bd_count  = bnx2i_map_scsi_sg(cmd->conn->hba, cmd);
 189         if (!bd_count) {
 190                 struct iscsi_bd *bd = cmd->io_tbl.bd_tbl;
 191
 192                 bd[0].buffer_addr_lo = bd[0].buffer_addr_hi = 0;
 193                 bd[0].buffer_length = bd[0].flags = 0;
 194         }
 195         cmd->io_tbl.bd_valid = bd_count;
 196 }
 197
 198
 199 /**
 200  * bnx2i_iscsi_unmap_sg_list - unmaps SG list
 201  * @cmd:        iscsi cmd struct pointer
 202  *
 203  * unmap IO buffers and invalidate the BD table
 204  */
 205 void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd *cmd)
 206 {
 207         struct scsi_cmnd *sc = cmd->scsi_cmd;
 208
 209         if (cmd->io_tbl.bd_valid && sc) {
 210                 scsi_dma_unmap(sc);
 211                 cmd->io_tbl.bd_valid = 0;
 212         }
 213 }
 214
 215 static void bnx2i_setup_cmd_wqe_template(struct bnx2i_cmd *cmd)
 216 {
 217         memset(&cmd->req, 0x00, sizeof(cmd->req));
 218         cmd->req.op_code = 0xFF;
 219         cmd->req.bd_list_addr_lo = (u32) cmd->io_tbl.bd_tbl_dma;
 220         cmd->req.bd_list_addr_hi =
 221                 (u32) ((u64) cmd->io_tbl.bd_tbl_dma >> 32);
 222
 223 }
 224
 225
 226 /**
 227  * bnx2i_bind_conn_to_iscsi_cid - bind conn structure to 'iscsi_cid'
 228  * @hba:        pointer to adapter instance
 229  * @conn:       pointer to iscsi connection
 230  * @iscsi_cid:  iscsi context ID, range 0 - (MAX_CONN - 1)
 231  *
 232  * update iscsi cid table entry with connection pointer. This enables
 233  *      driver to quickly get hold of connection structure pointer in
 234  *      completion/interrupt thread using iscsi context ID
 235  */
 236 static int bnx2i_bind_conn_to_iscsi_cid(struct bnx2i_hba *hba,
 237                                         struct bnx2i_conn *bnx2i_conn,
 238                                         u32 iscsi_cid)
 239 {
 240         if (hba && hba->cid_que.conn_cid_tbl[iscsi_cid]) {
 241                 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data,
 242                                  "conn bind - entry #%d not free\n", iscsi_cid);
 243                 return -EBUSY;
 244         }
 245
 246         hba->cid_que.conn_cid_tbl[iscsi_cid] = bnx2i_conn;
 247         return 0;
 248 }
 249
 250
 251 /**
 252  * bnx2i_get_conn_from_id - maps an iscsi cid to corresponding conn ptr
 253  * @hba:        pointer to adapter instance
 254  * @iscsi_cid:  iscsi context ID, range 0 - (MAX_CONN - 1)
 255  */
 256 struct bnx2i_conn *bnx2i_get_conn_from_id(struct bnx2i_hba *hba,
 257                                           u16 iscsi_cid)
 258 {
 259         if (!hba->cid_que.conn_cid_tbl) {
 260                 printk(KERN_ERR "bnx2i: ERROR - missing conn<->cid table\n");
 261                 return NULL;
 262
 263         } else if (iscsi_cid >= hba->max_active_conns) {
 264                 printk(KERN_ERR "bnx2i: wrong cid #%d\n", iscsi_cid);
 265                 return NULL;
 266         }
 267         return hba->cid_que.conn_cid_tbl[iscsi_cid];
 268 }
 269
 270
 271 /**
 272  * bnx2i_alloc_iscsi_cid - allocates a iscsi_cid from free pool
 273  * @hba:        pointer to adapter instance
 274  */
 275 static u32 bnx2i_alloc_iscsi_cid(struct bnx2i_hba *hba)
 276 {
 277         int idx;
 278
 279         if (!hba->cid_que.cid_free_cnt)
 280                 return -1;
 281
 282         idx = hba->cid_que.cid_q_cons_idx;
 283         hba->cid_que.cid_q_cons_idx++;
 284         if (hba->cid_que.cid_q_cons_idx == hba->cid_que.cid_q_max_idx)
 285                 hba->cid_que.cid_q_cons_idx = 0;
 286
 287         hba->cid_que.cid_free_cnt--;
 288         return hba->cid_que.cid_que[idx];
 289 }
 290
 291
 292 /**
 293  * bnx2i_free_iscsi_cid - returns tcp port to free list
 294  * @hba:                pointer to adapter instance
 295  * @iscsi_cid:          iscsi context ID to free
 296  */
 297 static void bnx2i_free_iscsi_cid(struct bnx2i_hba *hba, u16 iscsi_cid)
 298 {
 299         int idx;
 300
 301         if (iscsi_cid == (u16) -1)
 302                 return;
 303
 304         hba->cid_que.cid_free_cnt++;
 305
 306         idx = hba->cid_que.cid_q_prod_idx;
 307         hba->cid_que.cid_que[idx] = iscsi_cid;
 308         hba->cid_que.conn_cid_tbl[iscsi_cid] = NULL;
 309         hba->cid_que.cid_q_prod_idx++;
 310         if (hba->cid_que.cid_q_prod_idx == hba->cid_que.cid_q_max_idx)
 311                 hba->cid_que.cid_q_prod_idx = 0;
 312 }
 313
 314
 315 /**
 316  * bnx2i_setup_free_cid_que - sets up free iscsi cid queue
 317  * @hba:        pointer to adapter instance
 318  *
 319  * allocates memory for iscsi cid queue & 'cid - conn ptr' mapping table,
 320  *      and initialize table attributes
 321  */
 322 static int bnx2i_setup_free_cid_que(struct bnx2i_hba *hba)
 323 {
 324         int mem_size;
 325         int i;
 326
 327         mem_size = hba->max_active_conns * sizeof(u32);
 328         mem_size = (mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
 329
 330         hba->cid_que.cid_que_base = kmalloc(mem_size, GFP_KERNEL);
 331         if (!hba->cid_que.cid_que_base)
 332                 return -ENOMEM;
 333
 334         mem_size = hba->max_active_conns * sizeof(struct bnx2i_conn *);
 335         mem_size = (mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
 336         hba->cid_que.conn_cid_tbl = kmalloc(mem_size, GFP_KERNEL);
 337         if (!hba->cid_que.conn_cid_tbl) {
 338                 kfree(hba->cid_que.cid_que_base);
 339                 hba->cid_que.cid_que_base = NULL;
 340                 return -ENOMEM;
 341         }
 342
 343         hba->cid_que.cid_que = (u32 *)hba->cid_que.cid_que_base;
 344         hba->cid_que.cid_q_prod_idx = 0;
 345         hba->cid_que.cid_q_cons_idx = 0;
 346         hba->cid_que.cid_q_max_idx = hba->max_active_conns;
 347         hba->cid_que.cid_free_cnt = hba->max_active_conns;
 348
 349         for (i = 0; i < hba->max_active_conns; i++) {
 350                 hba->cid_que.cid_que[i] = i;
 351                 hba->cid_que.conn_cid_tbl[i] = NULL;
 352         }
 353         return 0;
 354 }
 355
 356
 357 /**
 358  * bnx2i_release_free_cid_que - releases 'iscsi_cid' queue resources
 359  * @hba:        pointer to adapter instance
 360  */
 361 static void bnx2i_release_free_cid_que(struct bnx2i_hba *hba)
 362 {
 363         kfree(hba->cid_que.cid_que_base);
 364         hba->cid_que.cid_que_base = NULL;
 365
 366         kfree(hba->cid_que.conn_cid_tbl);
 367         hba->cid_que.conn_cid_tbl = NULL;
 368 }
 369
 370
 371 /**
 372  * bnx2i_alloc_ep - allocates ep structure from global pool
 373  * @hba:        pointer to adapter instance
 374  *
 375  * routine allocates a free endpoint structure from global pool and
 376  *      a tcp port to be used for this connection.  Global resource lock,
 377  *      'bnx2i_resc_lock' is held while accessing shared global data structures
 378  */
 379 static struct iscsi_endpoint *bnx2i_alloc_ep(struct bnx2i_hba *hba)
 380 {
 381         struct iscsi_endpoint *ep;
 382         struct bnx2i_endpoint *bnx2i_ep;
 383         u32 ec_div;
 384
 385         ep = iscsi_create_endpoint(sizeof(*bnx2i_ep));
 386         if (!ep) {
 387                 printk(KERN_ERR "bnx2i: Could not allocate ep\n");
 388                 return NULL;
 389         }
 390
 391         bnx2i_ep = ep->dd_data;
 392         bnx2i_ep->cls_ep = ep;
 393         INIT_LIST_HEAD(&bnx2i_ep->link);
 394         bnx2i_ep->state = EP_STATE_IDLE;
 395         bnx2i_ep->ep_iscsi_cid = (u16) -1;
 396         bnx2i_ep->hba = hba;
 397         bnx2i_ep->hba_age = hba->age;
 398
 399         ec_div = event_coal_div;
 400         while (ec_div >>= 1)
 401                 bnx2i_ep->ec_shift += 1;
 402
 403         hba->ofld_conns_active++;
 404         init_waitqueue_head(&bnx2i_ep->ofld_wait);
 405         return ep;
 406 }
 407
 408
 409 /**
 410  * bnx2i_free_ep - free endpoint
 411  * @ep:         pointer to iscsi endpoint structure
 412  */
 413 static void bnx2i_free_ep(struct iscsi_endpoint *ep)
 414 {
 415         struct bnx2i_endpoint *bnx2i_ep = ep->dd_data;
 416         unsigned long flags;
 417
 418         spin_lock_irqsave(&bnx2i_resc_lock, flags);
 419         bnx2i_ep->state = EP_STATE_IDLE;
 420         bnx2i_ep->hba->ofld_conns_active--;
 421
 422         if (bnx2i_ep->ep_iscsi_cid != (u16) -1)
 423                 bnx2i_free_iscsi_cid(bnx2i_ep->hba, bnx2i_ep->ep_iscsi_cid);
 424
 425         if (bnx2i_ep->conn) {
 426                 bnx2i_ep->conn->ep = NULL;
 427                 bnx2i_ep->conn = NULL;
 428         }
 429
 430         bnx2i_ep->hba = NULL;
 431         spin_unlock_irqrestore(&bnx2i_resc_lock, flags);
 432         iscsi_destroy_endpoint(ep);
 433 }
 434
 435
 436 /**
 437  * bnx2i_alloc_bdt - allocates buffer descriptor (BD) table for the command
 438  * @hba:        adapter instance pointer
 439  * @session:    iscsi session pointer
 440  * @cmd:        iscsi command structure
 441  */
 442 static int bnx2i_alloc_bdt(struct bnx2i_hba *hba, struct iscsi_session *session,
 443                            struct bnx2i_cmd *cmd)
 444 {
 445         struct io_bdt *io = &cmd->io_tbl;
 446         struct iscsi_bd *bd;
 447
 448         io->bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
 449                                         ISCSI_MAX_BDS_PER_CMD * sizeof(*bd),
 450                                         &io->bd_tbl_dma, GFP_KERNEL);
 451         if (!io->bd_tbl) {
 452                 iscsi_session_printk(KERN_ERR, session, "Could not "
 453                                      "allocate bdt.\n");
 454                 return -ENOMEM;
 455         }
 456         io->bd_valid = 0;
 457         return 0;
 458 }
 459
 460 /**
 461  * bnx2i_destroy_cmd_pool - destroys iscsi command pool and release BD table
 462  * @hba:        adapter instance pointer
 463  * @session:    iscsi session pointer
 464  * @cmd:        iscsi command structure
 465  */
 466 static void bnx2i_destroy_cmd_pool(struct bnx2i_hba *hba,
 467                                    struct iscsi_session *session)
 468 {
 469         int i;
 470
 471         for (i = 0; i < session->cmds_max; i++) {
 472                 struct iscsi_task *task = session->cmds[i];
 473                 struct bnx2i_cmd *cmd = task->dd_data;
 474
 475                 if (cmd->io_tbl.bd_tbl)
 476                         dma_free_coherent(&hba->pcidev->dev,
 477                                           ISCSI_MAX_BDS_PER_CMD *
 478                                           sizeof(struct iscsi_bd),
 479                                           cmd->io_tbl.bd_tbl,
 480                                           cmd->io_tbl.bd_tbl_dma);
 481         }
 482
 483 }
 484
 485
 486 /**
 487  * bnx2i_setup_cmd_pool - sets up iscsi command pool for the session
 488  * @hba:        adapter instance pointer
 489  * @session:    iscsi session pointer
 490  */
 491 static int bnx2i_setup_cmd_pool(struct bnx2i_hba *hba,
 492                                 struct iscsi_session *session)
 493 {
 494         int i;
 495
 496         for (i = 0; i < session->cmds_max; i++) {
 497                 struct iscsi_task *task = session->cmds[i];
 498                 struct bnx2i_cmd *cmd = task->dd_data;
 499
 500                 task->hdr = &cmd->hdr;
 501                 task->hdr_max = sizeof(struct iscsi_hdr);
 502
 503                 if (bnx2i_alloc_bdt(hba, session, cmd))
 504                         goto free_bdts;
 505         }
 506
 507         return 0;
 508
 509 free_bdts:
 510         bnx2i_destroy_cmd_pool(hba, session);
 511         return -ENOMEM;
 512 }
 513
 514
 515 /**
 516  * bnx2i_setup_mp_bdt - allocate BD table resources
 517  * @hba:        pointer to adapter structure
 518  *
 519  * Allocate memory for dummy buffer and associated BD
 520  * table to be used by middle path (MP) requests
 521  */
 522 static int bnx2i_setup_mp_bdt(struct bnx2i_hba *hba)
 523 {
 524         int rc = 0;
 525         struct iscsi_bd *mp_bdt;
 526         u64 addr;
 527
 528         hba->mp_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
 529                                             &hba->mp_bd_dma, GFP_KERNEL);
 530         if (!hba->mp_bd_tbl) {
 531                 printk(KERN_ERR "unable to allocate Middle Path BDT\n");
 532                 rc = -1;
 533                 goto out;
 534         }
 535
 536         hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
 537                                                &hba->dummy_buf_dma, GFP_KERNEL);
 538         if (!hba->dummy_buffer) {
 539                 printk(KERN_ERR "unable to alloc Middle Path Dummy Buffer\n");
 540                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
 541                                   hba->mp_bd_tbl, hba->mp_bd_dma);
 542                 hba->mp_bd_tbl = NULL;
 543                 rc = -1;
 544                 goto out;
 545         }
 546
 547         mp_bdt = (struct iscsi_bd *) hba->mp_bd_tbl;
 548         addr = (unsigned long) hba->dummy_buf_dma;
 549         mp_bdt->buffer_addr_lo = addr & 0xffffffff;
 550         mp_bdt->buffer_addr_hi = addr >> 32;
 551         mp_bdt->buffer_length = PAGE_SIZE;
 552         mp_bdt->flags = ISCSI_BD_LAST_IN_BD_CHAIN |
 553                         ISCSI_BD_FIRST_IN_BD_CHAIN;
 554 out:
 555         return rc;
 556 }
 557
 558
 559 /**
 560  * bnx2i_free_mp_bdt - releases ITT back to free pool
 561  * @hba:        pointer to adapter instance
 562  *
 563  * free MP dummy buffer and associated BD table
 564  */
 565 static void bnx2i_free_mp_bdt(struct bnx2i_hba *hba)
 566 {
 567         if (hba->mp_bd_tbl) {
 568                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
 569                                   hba->mp_bd_tbl, hba->mp_bd_dma);
 570                 hba->mp_bd_tbl = NULL;
 571         }
 572         if (hba->dummy_buffer) {
 573                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
 574                                   hba->dummy_buffer, hba->dummy_buf_dma);
 575                 hba->dummy_buffer = NULL;
 576         }
 577                 return;
 578 }
 579
 580 /**
 581  * bnx2i_drop_session - notifies iscsid of connection error.
 582  * @hba:        adapter instance pointer
 583  * @session:    iscsi session pointer
 584  *
 585  * This notifies iscsid that there is a error, so it can initiate
 586  * recovery.
 587  *
 588  * This relies on caller using the iscsi class iterator so the object
 589  * is refcounted and does not disapper from under us.
 590  */
 591 void bnx2i_drop_session(struct iscsi_cls_session *cls_session)
 592 {
 593         iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
 594 }
 595
 596 /**
 597  * bnx2i_ep_destroy_list_add - add an entry to EP destroy list
 598  * @hba:        pointer to adapter instance
 599  * @ep:         pointer to endpoint (transport indentifier) structure
 600  *
 601  * EP destroy queue manager
 602  */
 603 static int bnx2i_ep_destroy_list_add(struct bnx2i_hba *hba,
 604                                      struct bnx2i_endpoint *ep)
 605 {
 606         write_lock_bh(&hba->ep_rdwr_lock);
 607         list_add_tail(&ep->link, &hba->ep_destroy_list);
 608         write_unlock_bh(&hba->ep_rdwr_lock);
 609         return 0;
 610 }
 611
 612 /**
 613  * bnx2i_ep_destroy_list_del - add an entry to EP destroy list
 614  *
 615  * @hba:                pointer to adapter instance
 616  * @ep:                 pointer to endpoint (transport indentifier) structure
 617  *
 618  * EP destroy queue manager
 619  */
 620 static int bnx2i_ep_destroy_list_del(struct bnx2i_hba *hba,
 621                                      struct bnx2i_endpoint *ep)
 622 {
 623         write_lock_bh(&hba->ep_rdwr_lock);
 624         list_del_init(&ep->link);
 625         write_unlock_bh(&hba->ep_rdwr_lock);
 626
 627         return 0;
 628 }
 629
 630 /**
 631  * bnx2i_ep_ofld_list_add - add an entry to ep offload pending list
 632  * @hba:        pointer to adapter instance
 633  * @ep:         pointer to endpoint (transport indentifier) structure
 634  *
 635  * pending conn offload completion queue manager
 636  */
 637 static int bnx2i_ep_ofld_list_add(struct bnx2i_hba *hba,
 638                                   struct bnx2i_endpoint *ep)
 639 {
 640         write_lock_bh(&hba->ep_rdwr_lock);
 641         list_add_tail(&ep->link, &hba->ep_ofld_list);
 642         write_unlock_bh(&hba->ep_rdwr_lock);
 643         return 0;
 644 }
 645
 646 /**
 647  * bnx2i_ep_ofld_list_del - add an entry to ep offload pending list
 648  * @hba:                pointer to adapter instance
 649  * @ep:                 pointer to endpoint (transport indentifier) structure
 650  *
 651  * pending conn offload completion queue manager
 652  */
 653 static int bnx2i_ep_ofld_list_del(struct bnx2i_hba *hba,
 654                                   struct bnx2i_endpoint *ep)
 655 {
 656         write_lock_bh(&hba->ep_rdwr_lock);
 657         list_del_init(&ep->link);
 658         write_unlock_bh(&hba->ep_rdwr_lock);
 659         return 0;
 660 }
 661
 662
 663 /**
 664  * bnx2i_find_ep_in_ofld_list - find iscsi_cid in pending list of endpoints
 665  *
 666  * @hba:                pointer to adapter instance
 667  * @iscsi_cid:          iscsi context ID to find
 668  *
 669  */
 670 struct bnx2i_endpoint *
 671 bnx2i_find_ep_in_ofld_list(struct bnx2i_hba *hba, u32 iscsi_cid)
 672 {
 673         struct list_head *list;
 674         struct list_head *tmp;
 675         struct bnx2i_endpoint *ep;
 676
 677         read_lock_bh(&hba->ep_rdwr_lock);
 678         list_for_each_safe(list, tmp, &hba->ep_ofld_list) {
 679                 ep = (struct bnx2i_endpoint *)list;
 680
 681                 if (ep->ep_iscsi_cid == iscsi_cid)
 682                         break;
 683                 ep = NULL;
 684         }
 685         read_unlock_bh(&hba->ep_rdwr_lock);
 686
 687         if (!ep)
 688                 printk(KERN_ERR "l5 cid %d not found\n", iscsi_cid);
 689         return ep;
 690 }
 691
 692 /**
 693  * bnx2i_find_ep_in_destroy_list - find iscsi_cid in destroy list
 694  * @hba:                pointer to adapter instance
 695  * @iscsi_cid:          iscsi context ID to find
 696  *
 697  */
 698 struct bnx2i_endpoint *
 699 bnx2i_find_ep_in_destroy_list(struct bnx2i_hba *hba, u32 iscsi_cid)
 700 {
 701         struct list_head *list;
 702         struct list_head *tmp;
 703         struct bnx2i_endpoint *ep;
 704
 705         read_lock_bh(&hba->ep_rdwr_lock);
 706         list_for_each_safe(list, tmp, &hba->ep_destroy_list) {
 707                 ep = (struct bnx2i_endpoint *)list;
 708
 709                 if (ep->ep_iscsi_cid == iscsi_cid)
 710                         break;
 711                 ep = NULL;
 712         }
 713         read_unlock_bh(&hba->ep_rdwr_lock);
 714
 715         if (!ep)
 716                 printk(KERN_ERR "l5 cid %d not found\n", iscsi_cid);
 717
 718         return ep;
 719 }
 720
 721 /**
 722  * bnx2i_ep_active_list_add - add an entry to ep active list
 723  * @hba:        pointer to adapter instance
 724  * @ep:         pointer to endpoint (transport indentifier) structure
 725  *
 726  * current active conn queue manager
 727  */
 728 static void bnx2i_ep_active_list_add(struct bnx2i_hba *hba,
 729                                      struct bnx2i_endpoint *ep)
 730 {
 731         write_lock_bh(&hba->ep_rdwr_lock);
 732         list_add_tail(&ep->link, &hba->ep_active_list);
 733         write_unlock_bh(&hba->ep_rdwr_lock);
 734 }
 735
 736
 737 /**
 738  * bnx2i_ep_active_list_del - deletes an entry to ep active list
 739  * @hba:        pointer to adapter instance
 740  * @ep:         pointer to endpoint (transport indentifier) structure
 741  *
 742  * current active conn queue manager
 743  */
 744 static void bnx2i_ep_active_list_del(struct bnx2i_hba *hba,
 745                                      struct bnx2i_endpoint *ep)
 746 {
 747         write_lock_bh(&hba->ep_rdwr_lock);
 748         list_del_init(&ep->link);
 749         write_unlock_bh(&hba->ep_rdwr_lock);
 750 }
 751
 752
 753 /**
 754  * bnx2i_setup_host_queue_size - assigns shost->can_queue param
 755  * @hba:        pointer to adapter instance
 756  * @shost:      scsi host pointer
 757  *
 758  * Initializes 'can_queue' parameter based on how many outstanding commands
 759  *      the device can handle. Each device 5708/5709/57710 has different
 760  *      capabilities
 761  */
 762 static void bnx2i_setup_host_queue_size(struct bnx2i_hba *hba,
 763                                         struct Scsi_Host *shost)
 764 {
 765         if (test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type))
 766                 shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_5708;
 767         else if (test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type))
 768                 shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_5709;
 769         else if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type))
 770                 shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_57710;
 771         else
 772                 shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_5708;
 773 }
 774
 775
 776 /**
 777  * bnx2i_alloc_hba - allocate and init adapter instance
 778  * @cnic:       cnic device pointer
 779  *
 780  * allocate & initialize adapter structure and call other
 781  *      support routines to do per adapter initialization
 782  */
 783 struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic)
 784 {
 785         struct Scsi_Host *shost;
 786         struct bnx2i_hba *hba;
 787
 788         shost = iscsi_host_alloc(&bnx2i_host_template, sizeof(*hba), 0);
 789         if (!shost)
 790                 return NULL;
 791         shost->dma_boundary = cnic->pcidev->dma_mask;
 792         shost->transportt = bnx2i_scsi_xport_template;
 793         shost->max_id = ISCSI_MAX_CONNS_PER_HBA;
 794         shost->max_channel = 0;
 795         shost->max_lun = 512;
 796         shost->max_cmd_len = 16;
 797
 798         hba = iscsi_host_priv(shost);
 799         hba->shost = shost;
 800         hba->netdev = cnic->netdev;
 801         /* Get PCI related information and update hba struct members */
 802         hba->pcidev = cnic->pcidev;
 803         pci_dev_get(hba->pcidev);
 804         hba->pci_did = hba->pcidev->device;
 805         hba->pci_vid = hba->pcidev->vendor;
 806         hba->pci_sdid = hba->pcidev->subsystem_device;
 807         hba->pci_svid = hba->pcidev->subsystem_vendor;
 808         hba->pci_func = PCI_FUNC(hba->pcidev->devfn);
 809         hba->pci_devno = PCI_SLOT(hba->pcidev->devfn);
 810
 811         bnx2i_identify_device(hba);
 812         bnx2i_setup_host_queue_size(hba, shost);
 813
 814         if (test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) {
 815                 hba->regview = ioremap_nocache(hba->netdev->base_addr,
 816                                                BNX2_MQ_CONFIG2);
 817                 if (!hba->regview)
 818                         goto ioreg_map_err;
 819         } else if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
 820                 hba->regview = ioremap_nocache(hba->netdev->base_addr, 4096);
 821                 if (!hba->regview)
 822                         goto ioreg_map_err;
 823         }
 824
 825         if (bnx2i_setup_mp_bdt(hba))
 826                 goto mp_bdt_mem_err;
 827
 828         INIT_LIST_HEAD(&hba->ep_ofld_list);
 829         INIT_LIST_HEAD(&hba->ep_active_list);
 830         INIT_LIST_HEAD(&hba->ep_destroy_list);
 831         rwlock_init(&hba->ep_rdwr_lock);
 832
 833         hba->mtu_supported = BNX2I_MAX_MTU_SUPPORTED;
 834
 835         /* different values for 5708/5709/57710 */
 836         hba->max_active_conns = ISCSI_MAX_CONNS_PER_HBA;
 837
 838         if (bnx2i_setup_free_cid_que(hba))
 839                 goto cid_que_err;
 840
 841         /* SQ/RQ/CQ size can be changed via sysfx interface */
 842         if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
 843                 if (sq_size && sq_size <= BNX2I_5770X_SQ_WQES_MAX)
 844                         hba->max_sqes = sq_size;
 845                 else
 846                         hba->max_sqes = BNX2I_5770X_SQ_WQES_DEFAULT;
 847         } else {        /* 5706/5708/5709 */
 848                 if (sq_size && sq_size <= BNX2I_570X_SQ_WQES_MAX)
 849                         hba->max_sqes = sq_size;
 850                 else
 851                         hba->max_sqes = BNX2I_570X_SQ_WQES_DEFAULT;
 852         }
 853
 854         hba->max_rqes = rq_size;
 855         hba->max_cqes = hba->max_sqes + rq_size;
 856         if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
 857                 if (hba->max_cqes > BNX2I_5770X_CQ_WQES_MAX)
 858                         hba->max_cqes = BNX2I_5770X_CQ_WQES_MAX;
 859         } else if (hba->max_cqes > BNX2I_570X_CQ_WQES_MAX)
 860                 hba->max_cqes = BNX2I_570X_CQ_WQES_MAX;
 861
 862         hba->num_ccell = hba->max_sqes / 2;
 863
 864         spin_lock_init(&hba->lock);
 865         mutex_init(&hba->net_dev_lock);
 866         init_waitqueue_head(&hba->eh_wait);
 867         if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
 868                 hba->hba_shutdown_tmo = 30 * HZ;
 869                 hba->conn_teardown_tmo = 20 * HZ;
 870                 hba->conn_ctx_destroy_tmo = 6 * HZ;
 871         } else {        /* 5706/5708/5709 */
 872                 hba->hba_shutdown_tmo = 20 * HZ;
 873                 hba->conn_teardown_tmo = 10 * HZ;
 874                 hba->conn_ctx_destroy_tmo = 2 * HZ;
 875         }
 876
 877         if (iscsi_host_add(shost, &hba->pcidev->dev))
 878                 goto free_dump_mem;
 879         return hba;
 880
 881 free_dump_mem:
 882         bnx2i_release_free_cid_que(hba);
 883 cid_que_err:
 884         bnx2i_free_mp_bdt(hba);
 885 mp_bdt_mem_err:
 886         if (hba->regview) {
 887                 iounmap(hba->regview);
 888                 hba->regview = NULL;
 889         }
 890 ioreg_map_err:
 891         pci_dev_put(hba->pcidev);
 892         scsi_host_put(shost);
 893         return NULL;
 894 }
 895
 896 /**
 897  * bnx2i_free_hba- releases hba structure and resources held by the adapter
 898  * @hba:        pointer to adapter instance
 899  *
 900  * free adapter structure and call various cleanup routines.
 901  */
 902 void bnx2i_free_hba(struct bnx2i_hba *hba)
 903 {
 904         struct Scsi_Host *shost = hba->shost;
 905
 906         iscsi_host_remove(shost);
 907         INIT_LIST_HEAD(&hba->ep_ofld_list);
 908         INIT_LIST_HEAD(&hba->ep_active_list);
 909         INIT_LIST_HEAD(&hba->ep_destroy_list);
 910         pci_dev_put(hba->pcidev);
 911
 912         if (hba->regview) {
 913                 iounmap(hba->regview);
 914                 hba->regview = NULL;
 915         }
 916         bnx2i_free_mp_bdt(hba);
 917         bnx2i_release_free_cid_que(hba);
 918         iscsi_host_free(shost);
 919 }
 920
 921 /**
 922  * bnx2i_conn_free_login_resources - free DMA resources used for login process
 923  * @hba:                pointer to adapter instance
 924  * @bnx2i_conn:         iscsi connection pointer
 925  *
 926  * Login related resources, mostly BDT & payload DMA memory is freed
 927  */
 928 static void bnx2i_conn_free_login_resources(struct bnx2i_hba *hba,
 929                                             struct bnx2i_conn *bnx2i_conn)
 930 {
 931         if (bnx2i_conn->gen_pdu.resp_bd_tbl) {
 932                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
 933                                   bnx2i_conn->gen_pdu.resp_bd_tbl,
 934                                   bnx2i_conn->gen_pdu.resp_bd_dma);
 935                 bnx2i_conn->gen_pdu.resp_bd_tbl = NULL;
 936         }
 937
 938         if (bnx2i_conn->gen_pdu.req_bd_tbl) {
 939                 dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
 940                                   bnx2i_conn->gen_pdu.req_bd_tbl,
 941                                   bnx2i_conn->gen_pdu.req_bd_dma);
 942                 bnx2i_conn->gen_pdu.req_bd_tbl = NULL;
 943         }
 944
 945         if (bnx2i_conn->gen_pdu.resp_buf) {
 946                 dma_free_coherent(&hba->pcidev->dev,
 947                                   ISCSI_DEF_MAX_RECV_SEG_LEN,
 948                                   bnx2i_conn->gen_pdu.resp_buf,
 949                                   bnx2i_conn->gen_pdu.resp_dma_addr);
 950                 bnx2i_conn->gen_pdu.resp_buf = NULL;
 951         }
 952
 953         if (bnx2i_conn->gen_pdu.req_buf) {
 954                 dma_free_coherent(&hba->pcidev->dev,
 955                                   ISCSI_DEF_MAX_RECV_SEG_LEN,
 956                                   bnx2i_conn->gen_pdu.req_buf,
 957                                   bnx2i_conn->gen_pdu.req_dma_addr);
 958                 bnx2i_conn->gen_pdu.req_buf = NULL;
 959         }
 960 }
 961
 962 /**
 963  * bnx2i_conn_alloc_login_resources - alloc DMA resources for login/nop.
 964  * @hba:                pointer to adapter instance
 965  * @bnx2i_conn:         iscsi connection pointer
 966  *
 967  * Mgmt task DNA resources are allocated in this routine.
 968  */
 969 static int bnx2i_conn_alloc_login_resources(struct bnx2i_hba *hba,
 970                                             struct bnx2i_conn *bnx2i_conn)
 971 {
 972         /* Allocate memory for login request/response buffers */
 973         bnx2i_conn->gen_pdu.req_buf =
 974                 dma_alloc_coherent(&hba->pcidev->dev,
 975                                    ISCSI_DEF_MAX_RECV_SEG_LEN,
 976                                    &bnx2i_conn->gen_pdu.req_dma_addr,
 977                                    GFP_KERNEL);
 978         if (bnx2i_conn->gen_pdu.req_buf == NULL)
 979                 goto login_req_buf_failure;
 980
 981         bnx2i_conn->gen_pdu.req_buf_size = 0;
 982         bnx2i_conn->gen_pdu.req_wr_ptr = bnx2i_conn->gen_pdu.req_buf;
 983
 984         bnx2i_conn->gen_pdu.resp_buf =
 985                 dma_alloc_coherent(&hba->pcidev->dev,
 986                                    ISCSI_DEF_MAX_RECV_SEG_LEN,
 987                                    &bnx2i_conn->gen_pdu.resp_dma_addr,
 988                                    GFP_KERNEL);
 989         if (bnx2i_conn->gen_pdu.resp_buf == NULL)
 990                 goto login_resp_buf_failure;
 991
 992         bnx2i_conn->gen_pdu.resp_buf_size = ISCSI_DEF_MAX_RECV_SEG_LEN;
 993         bnx2i_conn->gen_pdu.resp_wr_ptr = bnx2i_conn->gen_pdu.resp_buf;
 994
 995         bnx2i_conn->gen_pdu.req_bd_tbl =
 996                 dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
 997                                    &bnx2i_conn->gen_pdu.req_bd_dma, GFP_KERNEL);
 998         if (bnx2i_conn->gen_pdu.req_bd_tbl == NULL)
 999                 goto login_req_bd_tbl_failure;
1000
1001         bnx2i_conn->gen_pdu.resp_bd_tbl =
1002                 dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
1003                                    &bnx2i_conn->gen_pdu.resp_bd_dma,
1004                                    GFP_KERNEL);
1005         if (bnx2i_conn->gen_pdu.resp_bd_tbl == NULL)
1006                 goto login_resp_bd_tbl_failure;
1007
1008         return 0;
1009
1010 login_resp_bd_tbl_failure:
1011         dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
1012                           bnx2i_conn->gen_pdu.req_bd_tbl,
1013                           bnx2i_conn->gen_pdu.req_bd_dma);
1014         bnx2i_conn->gen_pdu.req_bd_tbl = NULL;
1015
1016 login_req_bd_tbl_failure:
1017         dma_free_coherent(&hba->pcidev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
1018                           bnx2i_conn->gen_pdu.resp_buf,
1019                           bnx2i_conn->gen_pdu.resp_dma_addr);
1020         bnx2i_conn->gen_pdu.resp_buf = NULL;
1021 login_resp_buf_failure:
1022         dma_free_coherent(&hba->pcidev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
1023                           bnx2i_conn->gen_pdu.req_buf,
1024                           bnx2i_conn->gen_pdu.req_dma_addr);
1025         bnx2i_conn->gen_pdu.req_buf = NULL;
1026 login_req_buf_failure:
1027         iscsi_conn_printk(KERN_ERR, bnx2i_conn->cls_conn->dd_data,
1028                           "login resource alloc failed!!\n");
1029         return -ENOMEM;
1030
1031 }
1032
1033
1034 /**
1035  * bnx2i_iscsi_prep_generic_pdu_bd - prepares BD table.
1036  * @bnx2i_conn:         iscsi connection pointer
1037  *
1038  * Allocates buffers and BD tables before shipping requests to cnic
1039  *      for PDUs prepared by 'iscsid' daemon
1040  */
1041 static void bnx2i_iscsi_prep_generic_pdu_bd(struct bnx2i_conn *bnx2i_conn)
1042 {
1043         struct iscsi_bd *bd_tbl;
1044
1045         bd_tbl = (struct iscsi_bd *) bnx2i_conn->gen_pdu.req_bd_tbl;
1046
1047         bd_tbl->buffer_addr_hi =
1048                 (u32) ((u64) bnx2i_conn->gen_pdu.req_dma_addr >> 32);
1049         bd_tbl->buffer_addr_lo = (u32) bnx2i_conn->gen_pdu.req_dma_addr;
1050         bd_tbl->buffer_length = bnx2i_conn->gen_pdu.req_wr_ptr -
1051                                 bnx2i_conn->gen_pdu.req_buf;
1052         bd_tbl->reserved0 = 0;
1053         bd_tbl->flags = ISCSI_BD_LAST_IN_BD_CHAIN |
1054                         ISCSI_BD_FIRST_IN_BD_CHAIN;
1055
1056         bd_tbl = (struct iscsi_bd  *) bnx2i_conn->gen_pdu.resp_bd_tbl;
1057         bd_tbl->buffer_addr_hi = (u64) bnx2i_conn->gen_pdu.resp_dma_addr >> 32;
1058         bd_tbl->buffer_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_dma_addr;
1059         bd_tbl->buffer_length = ISCSI_DEF_MAX_RECV_SEG_LEN;
1060         bd_tbl->reserved0 = 0;
1061         bd_tbl->flags = ISCSI_BD_LAST_IN_BD_CHAIN |
1062                         ISCSI_BD_FIRST_IN_BD_CHAIN;
1063 }
1064
1065
1066 /**
1067  * bnx2i_iscsi_send_generic_request - called to send mgmt tasks.
1068  * @task:       transport layer task pointer
1069  *
1070  * called to transmit PDUs prepared by the 'iscsid' daemon. iSCSI login,
1071  *      Nop-out and Logout requests flow through this path.
1072  */
1073 static int bnx2i_iscsi_send_generic_request(struct iscsi_task *task)
1074 {
1075         struct bnx2i_cmd *cmd = task->dd_data;
1076         struct bnx2i_conn *bnx2i_conn = cmd->conn;
1077         int rc = 0;
1078         char *buf;
1079         int data_len;
1080
1081         bnx2i_iscsi_prep_generic_pdu_bd(bnx2i_conn);
1082         switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
1083         case ISCSI_OP_LOGIN:
1084                 bnx2i_send_iscsi_login(bnx2i_conn, task);
1085                 break;
1086         case ISCSI_OP_NOOP_OUT:
1087                 data_len = bnx2i_conn->gen_pdu.req_buf_size;
1088                 buf = bnx2i_conn->gen_pdu.req_buf;
1089                 if (data_len)
1090                         rc = bnx2i_send_iscsi_nopout(bnx2i_conn, task,
1091                                                      buf, data_len, 1);
1092                 else
1093                         rc = bnx2i_send_iscsi_nopout(bnx2i_conn, task,
1094                                                      NULL, 0, 1);
1095                 break;
1096         case ISCSI_OP_LOGOUT:
1097                 rc = bnx2i_send_iscsi_logout(bnx2i_conn, task);
1098                 break;
1099         case ISCSI_OP_SCSI_TMFUNC:
1100                 rc = bnx2i_send_iscsi_tmf(bnx2i_conn, task);
1101                 break;
1102         case ISCSI_OP_TEXT:
1103                 rc = bnx2i_send_iscsi_text(bnx2i_conn, task);
1104                 break;
1105         default:
1106                 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data,
1107                                   "send_gen: unsupported op 0x%x\n",
1108                                   task->hdr->opcode);
1109         }
1110         return rc;
1111 }
1112
1113
1114 /**********************************************************************
1115  *              SCSI-ML Interface
1116  **********************************************************************/
1117
1118 /**
1119  * bnx2i_cpy_scsi_cdb - copies LUN & CDB fields in required format to sq wqe
1120  * @sc:         SCSI-ML command pointer
1121  * @cmd:        iscsi cmd pointer
1122  */
1123 static void bnx2i_cpy_scsi_cdb(struct scsi_cmnd *sc, struct bnx2i_cmd *cmd)
1124 {
1125         u32 dword;
1126         int lpcnt;
1127         u8 *srcp;
1128         u32 *dstp;
1129         u32 scsi_lun[2];
1130
1131         int_to_scsilun(sc->device->lun, (struct scsi_lun *) scsi_lun);
1132         cmd->req.lun[0] = be32_to_cpu(scsi_lun[0]);
1133         cmd->req.lun[1] = be32_to_cpu(scsi_lun[1]);
1134
1135         lpcnt = cmd->scsi_cmd->cmd_len / sizeof(dword);
1136         srcp = (u8 *) sc->cmnd;
1137         dstp = (u32 *) cmd->req.cdb;
1138         while (lpcnt--) {
1139                 memcpy(&dword, (const void *) srcp, 4);
1140                 *dstp = cpu_to_be32(dword);
1141                 srcp += 4;
1142                 dstp++;
1143         }
1144         if (sc->cmd_len & 0x3) {
1145                 dword = (u32) srcp[0] | ((u32) srcp[1] << 8);
1146                 *dstp = cpu_to_be32(dword);
1147         }
1148 }
1149
1150 static void bnx2i_cleanup_task(struct iscsi_task *task)
1151 {
1152         struct iscsi_conn *conn = task->conn;
1153         struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1154         struct bnx2i_hba *hba = bnx2i_conn->hba;
1155
1156         /*
1157          * mgmt task or cmd was never sent to us to transmit.
1158          */
1159         if (!task->sc || task->state == ISCSI_TASK_PENDING)
1160                 return;
1161         /*
1162          * need to clean-up task context to claim dma buffers
1163          */
1164         if (task->state == ISCSI_TASK_ABRT_TMF) {
1165                 bnx2i_send_cmd_cleanup_req(hba, task->dd_data);
1166
1167                 spin_unlock_bh(&conn->session->lock);
1168                 wait_for_completion_timeout(&bnx2i_conn->cmd_cleanup_cmpl,
1169                                 msecs_to_jiffies(ISCSI_CMD_CLEANUP_TIMEOUT));
1170                 spin_lock_bh(&conn->session->lock);
1171         }
1172         bnx2i_iscsi_unmap_sg_list(task->dd_data);
1173 }
1174
1175 /**
1176  * bnx2i_mtask_xmit - transmit mtask to chip for further processing
1177  * @conn:       transport layer conn structure pointer
1178  * @task:       transport layer command structure pointer
1179  */
1180 static int
1181 bnx2i_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
1182 {
1183         struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1184         struct bnx2i_cmd *cmd = task->dd_data;
1185
1186         memset(bnx2i_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN);
1187
1188         bnx2i_setup_cmd_wqe_template(cmd);
1189         bnx2i_conn->gen_pdu.req_buf_size = task->data_count;
1190         if (task->data_count) {
1191                 memcpy(bnx2i_conn->gen_pdu.req_buf, task->data,
1192                        task->data_count);
1193                 bnx2i_conn->gen_pdu.req_wr_ptr =
1194                         bnx2i_conn->gen_pdu.req_buf + task->data_count;
1195         }
1196         cmd->conn = conn->dd_data;
1197         cmd->scsi_cmd = NULL;
1198         return bnx2i_iscsi_send_generic_request(task);
1199 }
1200
1201 /**
1202  * bnx2i_task_xmit - transmit iscsi command to chip for further processing
1203  * @task:       transport layer command structure pointer
1204  *
1205  * maps SG buffers and send request to chip/firmware in the form of SQ WQE
1206  */
1207 static int bnx2i_task_xmit(struct iscsi_task *task)
1208 {
1209         struct iscsi_conn *conn = task->conn;
1210         struct iscsi_session *session = conn->session;
1211         struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
1212         struct bnx2i_hba *hba = iscsi_host_priv(shost);
1213         struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1214         struct scsi_cmnd *sc = task->sc;
1215         struct bnx2i_cmd *cmd = task->dd_data;
1216         struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
1217
1218         if (atomic_read(&bnx2i_conn->ep->num_active_cmds) + 1  >
1219             hba->max_sqes)
1220                 return -ENOMEM;
1221
1222         /*
1223          * If there is no scsi_cmnd this must be a mgmt task
1224          */
1225         if (!sc)
1226                 return bnx2i_mtask_xmit(conn, task);
1227
1228         bnx2i_setup_cmd_wqe_template(cmd);
1229         cmd->req.op_code = ISCSI_OP_SCSI_CMD;
1230         cmd->conn = bnx2i_conn;
1231         cmd->scsi_cmd = sc;
1232         cmd->req.total_data_transfer_length = scsi_bufflen(sc);
1233         cmd->req.cmd_sn = be32_to_cpu(hdr->cmdsn);
1234
1235         bnx2i_iscsi_map_sg_list(cmd);
1236         bnx2i_cpy_scsi_cdb(sc, cmd);
1237
1238         cmd->req.op_attr = ISCSI_ATTR_SIMPLE;
1239         if (sc->sc_data_direction == DMA_TO_DEVICE) {
1240                 cmd->req.op_attr |= ISCSI_CMD_REQUEST_WRITE;
1241                 cmd->req.itt = task->itt |
1242                         (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT);
1243                 bnx2i_setup_write_cmd_bd_info(task);
1244         } else {
1245                 if (scsi_bufflen(sc))
1246                         cmd->req.op_attr |= ISCSI_CMD_REQUEST_READ;
1247                 cmd->req.itt = task->itt |
1248                         (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT);
1249         }
1250
1251         cmd->req.num_bds = cmd->io_tbl.bd_valid;
1252         if (!cmd->io_tbl.bd_valid) {
1253                 cmd->req.bd_list_addr_lo = (u32) hba->mp_bd_dma;
1254                 cmd->req.bd_list_addr_hi = (u32) ((u64) hba->mp_bd_dma >> 32);
1255                 cmd->req.num_bds = 1;
1256         }
1257
1258         bnx2i_send_iscsi_scsicmd(bnx2i_conn, cmd);
1259         return 0;
1260 }
1261
1262 /**
1263  * bnx2i_session_create - create a new iscsi session
1264  * @cmds_max:           max commands supported
1265  * @qdepth:             scsi queue depth to support
1266  * @initial_cmdsn:      initial iscsi CMDSN to be used for this session
1267  *
1268  * Creates a new iSCSI session instance on given device.
1269  */
1270 static struct iscsi_cls_session *
1271 bnx2i_session_create(struct iscsi_endpoint *ep,
1272                      uint16_t cmds_max, uint16_t qdepth,
1273                      uint32_t initial_cmdsn)
1274 {
1275         struct Scsi_Host *shost;
1276         struct iscsi_cls_session *cls_session;
1277         struct bnx2i_hba *hba;
1278         struct bnx2i_endpoint *bnx2i_ep;
1279
1280         if (!ep) {
1281                 printk(KERN_ERR "bnx2i: missing ep.\n");
1282                 return NULL;
1283         }
1284
1285         bnx2i_ep = ep->dd_data;
1286         shost = bnx2i_ep->hba->shost;
1287         hba = iscsi_host_priv(shost);
1288         if (bnx2i_adapter_ready(hba))
1289                 return NULL;
1290
1291         /*
1292          * user can override hw limit as long as it is within
1293          * the min/max.
1294          */
1295         if (cmds_max > hba->max_sqes)
1296                 cmds_max = hba->max_sqes;
1297         else if (cmds_max < BNX2I_SQ_WQES_MIN)
1298                 cmds_max = BNX2I_SQ_WQES_MIN;
1299
1300         cls_session = iscsi_session_setup(&bnx2i_iscsi_transport, shost,
1301                                           cmds_max, 0, sizeof(struct bnx2i_cmd),
1302                                           initial_cmdsn, ISCSI_MAX_TARGET);
1303         if (!cls_session)
1304                 return NULL;
1305
1306         if (bnx2i_setup_cmd_pool(hba, cls_session->dd_data))
1307                 goto session_teardown;
1308         return cls_session;
1309
1310 session_teardown:
1311         iscsi_session_teardown(cls_session);
1312         return NULL;
1313 }
1314
1315
1316 /**
1317  * bnx2i_session_destroy - destroys iscsi session
1318  * @cls_session:        pointer to iscsi cls session
1319  *
1320  * Destroys previously created iSCSI session instance and releases
1321  *      all resources held by it
1322  */
1323 static void bnx2i_session_destroy(struct iscsi_cls_session *cls_session)
1324 {
1325         struct iscsi_session *session = cls_session->dd_data;
1326         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
1327         struct bnx2i_hba *hba = iscsi_host_priv(shost);
1328
1329         bnx2i_destroy_cmd_pool(hba, session);
1330         iscsi_session_teardown(cls_session);
1331 }
1332
1333
1334 /**
1335  * bnx2i_conn_create - create iscsi connection instance
1336  * @cls_session:        pointer to iscsi cls session
1337  * @cid:                iscsi cid as per rfc (not NX2's CID terminology)
1338  *
1339  * Creates a new iSCSI connection instance for a given session
1340  */
1341 static struct iscsi_cls_conn *
1342 bnx2i_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid)
1343 {
1344         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
1345         struct bnx2i_hba *hba = iscsi_host_priv(shost);
1346         struct bnx2i_conn *bnx2i_conn;
1347         struct iscsi_cls_conn *cls_conn;
1348         struct iscsi_conn *conn;
1349
1350         cls_conn = iscsi_conn_setup(cls_session, sizeof(*bnx2i_conn),
1351                                     cid);
1352         if (!cls_conn)
1353                 return NULL;
1354         conn = cls_conn->dd_data;
1355
1356         bnx2i_conn = conn->dd_data;
1357         bnx2i_conn->cls_conn = cls_conn;
1358         bnx2i_conn->hba = hba;
1359
1360         atomic_set(&bnx2i_conn->work_cnt, 0);
1361
1362         /* 'ep' ptr will be assigned in bind() call */
1363         bnx2i_conn->ep = NULL;
1364         init_completion(&bnx2i_conn->cmd_cleanup_cmpl);
1365
1366         if (bnx2i_conn_alloc_login_resources(hba, bnx2i_conn)) {
1367                 iscsi_conn_printk(KERN_ALERT, conn,
1368                                   "conn_new: login resc alloc failed!!\n");
1369                 goto free_conn;
1370         }
1371
1372         return cls_conn;
1373
1374 free_conn:
1375         iscsi_conn_teardown(cls_conn);
1376         return NULL;
1377 }
1378
1379 /**
1380  * bnx2i_conn_bind - binds iscsi sess, conn and ep objects together
1381  * @cls_session:        pointer to iscsi cls session
1382  * @cls_conn:           pointer to iscsi cls conn
1383  * @transport_fd:       64-bit EP handle
1384  * @is_leading:         leading connection on this session?
1385  *
1386  * Binds together iSCSI session instance, iSCSI connection instance
1387  *      and the TCP connection. This routine returns error code if
1388  *      TCP connection does not belong on the device iSCSI sess/conn
1389  *      is bound
1390  */
1391 static int bnx2i_conn_bind(struct iscsi_cls_session *cls_session,
1392                            struct iscsi_cls_conn *cls_conn,
1393                            uint64_t transport_fd, int is_leading)
1394 {
1395         struct iscsi_conn *conn = cls_conn->dd_data;
1396         struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1397         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
1398         struct bnx2i_hba *hba = iscsi_host_priv(shost);
1399         struct bnx2i_endpoint *bnx2i_ep;
1400         struct iscsi_endpoint *ep;
1401         int ret_code;
1402
1403         ep = iscsi_lookup_endpoint(transport_fd);
1404         if (!ep)
1405                 return -EINVAL;
1406         /*
1407          * Forcefully terminate all in progress connection recovery at the
1408          * earliest, either in bind(), send_pdu(LOGIN), or conn_start()
1409          */
1410         if (bnx2i_adapter_ready(hba))
1411                 return -EIO;
1412
1413         bnx2i_ep = ep->dd_data;
1414         if ((bnx2i_ep->state == EP_STATE_TCP_FIN_RCVD) ||
1415             (bnx2i_ep->state == EP_STATE_TCP_RST_RCVD))
1416                 /* Peer disconnect via' FIN or RST */
1417                 return -EINVAL;
1418
1419         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1420                 return -EINVAL;
1421
1422         if (bnx2i_ep->hba != hba) {
1423                 /* Error - TCP connection does not belong to this device
1424                  */
1425                 iscsi_conn_printk(KERN_ALERT, cls_conn->dd_data,
1426                                   "conn bind, ep=0x%p (%s) does not",
1427                                   bnx2i_ep, bnx2i_ep->hba->netdev->name);
1428                 iscsi_conn_printk(KERN_ALERT, cls_conn->dd_data,
1429                                   "belong to hba (%s)\n",
1430                                   hba->netdev->name);
1431                 return -EEXIST;
1432         }
1433         bnx2i_ep->conn = bnx2i_conn;
1434         bnx2i_conn->ep = bnx2i_ep;
1435         bnx2i_conn->iscsi_conn_cid = bnx2i_ep->ep_iscsi_cid;
1436         bnx2i_conn->fw_cid = bnx2i_ep->ep_cid;
1437
1438         ret_code = bnx2i_bind_conn_to_iscsi_cid(hba, bnx2i_conn,
1439                                                 bnx2i_ep->ep_iscsi_cid);
1440
1441         /* 5706/5708/5709 FW takes RQ as full when initiated, but for 57710
1442          * driver needs to explicitly replenish RQ index during setup.
1443          */
1444         if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_ep->hba->cnic_dev_type))
1445                 bnx2i_put_rq_buf(bnx2i_conn, 0);
1446
1447         bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE);
1448         return ret_code;
1449 }
1450
1451
1452 /**
1453  * bnx2i_conn_destroy - destroy iscsi connection instance & release resources
1454  * @cls_conn:   pointer to iscsi cls conn
1455  *
1456  * Destroy an iSCSI connection instance and release memory resources held by
1457  *      this connection
1458  */
1459 static void bnx2i_conn_destroy(struct iscsi_cls_conn *cls_conn)
1460 {
1461         struct iscsi_conn *conn = cls_conn->dd_data;
1462         struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1463         struct Scsi_Host *shost;
1464         struct bnx2i_hba *hba;
1465         struct bnx2i_work *work, *tmp;
1466         unsigned cpu = 0;
1467         struct bnx2i_percpu_s *p;
1468
1469         shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
1470         hba = iscsi_host_priv(shost);
1471
1472         bnx2i_conn_free_login_resources(hba, bnx2i_conn);
1473
1474         if (atomic_read(&bnx2i_conn->work_cnt)) {
1475                 for_each_online_cpu(cpu) {
1476                         p = &per_cpu(bnx2i_percpu, cpu);
1477                         spin_lock_bh(&p->p_work_lock);
1478                         list_for_each_entry_safe(work, tmp,
1479                                                  &p->work_list, list) {
1480                                 if (work->session == conn->session &&
1481                                     work->bnx2i_conn == bnx2i_conn) {
1482                                         list_del_init(&work->list);
1483                                         kfree(work);
1484                                         if (!atomic_dec_and_test(
1485                                                         &bnx2i_conn->work_cnt))
1486                                                 break;
1487                                 }
1488                         }
1489                         spin_unlock_bh(&p->p_work_lock);
1490                 }
1491         }
1492
1493         iscsi_conn_teardown(cls_conn);
1494 }
1495
1496
1497 /**
1498  * bnx2i_ep_get_param - return iscsi ep parameter to caller
1499  * @ep:         pointer to iscsi endpoint
1500  * @param:      parameter type identifier
1501  * @buf:        buffer pointer
1502  *
1503  * returns iSCSI ep parameters
1504  */
1505 static int bnx2i_ep_get_param(struct iscsi_endpoint *ep,
1506                               enum iscsi_param param, char *buf)
1507 {
1508         struct bnx2i_endpoint *bnx2i_ep = ep->dd_data;
1509         struct bnx2i_hba *hba = bnx2i_ep->hba;
1510         int len = -ENOTCONN;
1511
1512         if (!hba)
1513                 return -ENOTCONN;
1514
1515         switch (param) {
1516         case ISCSI_PARAM_CONN_PORT:
1517                 mutex_lock(&hba->net_dev_lock);
1518                 if (bnx2i_ep->cm_sk)
1519                         len = sprintf(buf, "%hu\n", bnx2i_ep->cm_sk->dst_port);
1520                 mutex_unlock(&hba->net_dev_lock);
1521                 break;
1522         case ISCSI_PARAM_CONN_ADDRESS:
1523                 mutex_lock(&hba->net_dev_lock);
1524                 if (bnx2i_ep->cm_sk)
1525                         len = sprintf(buf, "%pI4\n", &bnx2i_ep->cm_sk->dst_ip);
1526                 mutex_unlock(&hba->net_dev_lock);
1527                 break;
1528         default:
1529                 return -ENOSYS;
1530         }
1531
1532         return len;
1533 }
1534
1535 /**
1536  * bnx2i_host_get_param - returns host (adapter) related parameters
1537  * @shost:      scsi host pointer
1538  * @param:      parameter type identifier
1539  * @buf:        buffer pointer
1540  */
1541 static int bnx2i_host_get_param(struct Scsi_Host *shost,
1542                                 enum iscsi_host_param param, char *buf)
1543 {
1544         struct bnx2i_hba *hba = iscsi_host_priv(shost);
1545         int len = 0;
1546
1547         switch (param) {
1548         case ISCSI_HOST_PARAM_HWADDRESS:
1549                 len = sysfs_format_mac(buf, hba->cnic->mac_addr, 6);
1550                 break;
1551         case ISCSI_HOST_PARAM_NETDEV_NAME:
1552                 len = sprintf(buf, "%s\n", hba->netdev->name);
1553                 break;
1554         case ISCSI_HOST_PARAM_IPADDRESS: {
1555                 struct list_head *active_list = &hba->ep_active_list;
1556
1557                 read_lock_bh(&hba->ep_rdwr_lock);
1558                 if (!list_empty(&hba->ep_active_list)) {
1559                         struct bnx2i_endpoint *bnx2i_ep;
1560                         struct cnic_sock *csk;
1561
1562                         bnx2i_ep = list_first_entry(active_list,
1563                                                     struct bnx2i_endpoint,
1564                                                     link);
1565                         csk = bnx2i_ep->cm_sk;
1566                         if (test_bit(SK_F_IPV6, &csk->flags))
1567                                 len = sprintf(buf, "%pI6\n", csk->src_ip);
1568                         else
1569                                 len = sprintf(buf, "%pI4\n", csk->src_ip);
1570                 }
1571                 read_unlock_bh(&hba->ep_rdwr_lock);
1572                 break;
1573         }
1574         default:
1575                 return iscsi_host_get_param(shost, param, buf);
1576         }
1577         return len;
1578 }
1579
1580 /**
1581  * bnx2i_conn_start - completes iscsi connection migration to FFP
1582  * @cls_conn:   pointer to iscsi cls conn
1583  *
1584  * last call in FFP migration to handover iscsi conn to the driver
1585  */
1586 static int bnx2i_conn_start(struct iscsi_cls_conn *cls_conn)
1587 {
1588         struct iscsi_conn *conn = cls_conn->dd_data;
1589         struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1590
1591         bnx2i_conn->ep->state = EP_STATE_ULP_UPDATE_START;
1592         bnx2i_update_iscsi_conn(conn);
1593
1594         /*
1595          * this should normally not sleep for a long time so it should
1596          * not disrupt the caller.
1597          */
1598         bnx2i_conn->ep->ofld_timer.expires = 1 * HZ + jiffies;
1599         bnx2i_conn->ep->ofld_timer.function = bnx2i_ep_ofld_timer;
1600         bnx2i_conn->ep->ofld_timer.data = (unsigned long) bnx2i_conn->ep;
1601         add_timer(&bnx2i_conn->ep->ofld_timer);
1602         /* update iSCSI context for this conn, wait for CNIC to complete */
1603         wait_event_interruptible(bnx2i_conn->ep->ofld_wait,
1604                         bnx2i_conn->ep->state != EP_STATE_ULP_UPDATE_START);
1605
1606         if (signal_pending(current))
1607                 flush_signals(current);
1608         del_timer_sync(&bnx2i_conn->ep->ofld_timer);
1609
1610         iscsi_conn_start(cls_conn);
1611         return 0;
1612 }
1613
1614
1615 /**
1616  * bnx2i_conn_get_stats - returns iSCSI stats
1617  * @cls_conn:   pointer to iscsi cls conn
1618  * @stats:      pointer to iscsi statistic struct
1619  */
1620 static void bnx2i_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1621                                  struct iscsi_stats *stats)
1622 {
1623         struct iscsi_conn *conn = cls_conn->dd_data;
1624
1625         stats->txdata_octets = conn->txdata_octets;
1626         stats->rxdata_octets = conn->rxdata_octets;
1627         stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
1628         stats->dataout_pdus = conn->dataout_pdus_cnt;
1629         stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
1630         stats->datain_pdus = conn->datain_pdus_cnt;
1631         stats->r2t_pdus = conn->r2t_pdus_cnt;
1632         stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
1633         stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
1634         stats->custom_length = 3;
1635         strcpy(stats->custom[2].desc, "eh_abort_cnt");
1636         stats->custom[2].value = conn->eh_abort_cnt;
1637         stats->digest_err = 0;
1638         stats->timeout_err = 0;
1639         stats->custom_length = 0;
1640 }
1641
1642
1643 /**
1644  * bnx2i_check_route - checks if target IP route belongs to one of NX2 devices
1645  * @dst_addr:   target IP address
1646  *
1647  * check if route resolves to BNX2 device
1648  */
1649 static struct bnx2i_hba *bnx2i_check_route(struct sockaddr *dst_addr)
1650 {
1651         struct sockaddr_in *desti = (struct sockaddr_in *) dst_addr;
1652         struct bnx2i_hba *hba;
1653         struct cnic_dev *cnic = NULL;
1654
1655         hba = get_adapter_list_head();
1656         if (hba && hba->cnic)
1657                 cnic = hba->cnic->cm_select_dev(desti, CNIC_ULP_ISCSI);
1658         if (!cnic) {
1659                 printk(KERN_ALERT "bnx2i: no route,"
1660                        "can't connect using cnic\n");
1661                 goto no_nx2_route;
1662         }
1663         hba = bnx2i_find_hba_for_cnic(cnic);
1664         if (!hba)
1665                 goto no_nx2_route;
1666
1667         if (bnx2i_adapter_ready(hba)) {
1668                 printk(KERN_ALERT "bnx2i: check route, hba not found\n");
1669                 goto no_nx2_route;
1670         }
1671         if (hba->netdev->mtu > hba->mtu_supported) {
1672                 printk(KERN_ALERT "bnx2i: %s network i/f mtu is set to %d\n",
1673                                   hba->netdev->name, hba->netdev->mtu);
1674                 printk(KERN_ALERT "bnx2i: iSCSI HBA can support mtu of %d\n",
1675                                   hba->mtu_supported);
1676                 goto no_nx2_route;
1677         }
1678         return hba;
1679 no_nx2_route:
1680         return NULL;
1681 }
1682
1683
1684 /**
1685  * bnx2i_tear_down_conn - tear down iscsi/tcp connection and free resources
1686  * @hba:        pointer to adapter instance
1687  * @ep:         endpoint (transport indentifier) structure
1688  *
1689  * destroys cm_sock structure and on chip iscsi context
1690  */
1691 static int bnx2i_tear_down_conn(struct bnx2i_hba *hba,
1692                                  struct bnx2i_endpoint *ep)
1693 {
1694         if (test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic) && ep->cm_sk)
1695                 hba->cnic->cm_destroy(ep->cm_sk);
1696
1697         if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type) &&
1698             ep->state == EP_STATE_DISCONN_TIMEDOUT) {
1699                 if (ep->conn && ep->conn->cls_conn &&
1700                     ep->conn->cls_conn->dd_data) {
1701                         struct iscsi_conn *conn = ep->conn->cls_conn->dd_data;
1702
1703                         /* Must suspend all rx queue activity for this ep */
1704                         set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
1705                 }
1706                 /* CONN_DISCONNECT timeout may or may not be an issue depending
1707                  * on what transcribed in TCP layer, different targets behave
1708                  * differently
1709                  */
1710                 printk(KERN_ALERT "bnx2i (%s): - WARN - CONN_DISCON timed out, "
1711                                   "please submit GRC Dump, NW/PCIe trace, "
1712                                   "driver msgs to developers for analysis\n",
1713                                   hba->netdev->name);
1714         }
1715
1716         ep->state = EP_STATE_CLEANUP_START;
1717         init_timer(&ep->ofld_timer);
1718         ep->ofld_timer.expires = hba->conn_ctx_destroy_tmo + jiffies;
1719         ep->ofld_timer.function = bnx2i_ep_ofld_timer;
1720         ep->ofld_timer.data = (unsigned long) ep;
1721         add_timer(&ep->ofld_timer);
1722
1723         bnx2i_ep_destroy_list_add(hba, ep);
1724
1725         /* destroy iSCSI context, wait for it to complete */
1726         if (bnx2i_send_conn_destroy(hba, ep))
1727                 ep->state = EP_STATE_CLEANUP_CMPL;
1728
1729         wait_event_interruptible(ep->ofld_wait,
1730                                  (ep->state != EP_STATE_CLEANUP_START));
1731
1732         if (signal_pending(current))
1733                 flush_signals(current);
1734         del_timer_sync(&ep->ofld_timer);
1735
1736         bnx2i_ep_destroy_list_del(hba, ep);
1737
1738         if (ep->state != EP_STATE_CLEANUP_CMPL)
1739                 /* should never happen */
1740                 printk(KERN_ALERT "bnx2i - conn destroy failed\n");
1741
1742         return 0;
1743 }
1744
1745
1746 /**
1747  * bnx2i_ep_connect - establish TCP connection to target portal
1748  * @shost:              scsi host
1749  * @dst_addr:           target IP address
1750  * @non_blocking:       blocking or non-blocking call
1751  *
1752  * this routine initiates the TCP/IP connection by invoking Option-2 i/f
1753  *      with l5_core and the CNIC. This is a multi-step process of resolving
1754  *      route to target, create a iscsi connection context, handshaking with
1755  *      CNIC module to create/initialize the socket struct and finally
1756  *      sending down option-2 request to complete TCP 3-way handshake
1757  */
1758 static struct iscsi_endpoint *bnx2i_ep_connect(struct Scsi_Host *shost,
1759                                                struct sockaddr *dst_addr,
1760                                                int non_blocking)
1761 {
1762         u32 iscsi_cid = BNX2I_CID_RESERVED;
1763         struct sockaddr_in *desti = (struct sockaddr_in *) dst_addr;
1764         struct sockaddr_in6 *desti6;
1765         struct bnx2i_endpoint *bnx2i_ep;
1766         struct bnx2i_hba *hba;
1767         struct cnic_dev *cnic;
1768         struct cnic_sockaddr saddr;
1769         struct iscsi_endpoint *ep;
1770         int rc = 0;
1771
1772         if (shost) {
1773                 /* driver is given scsi host to work with */
1774                 hba = iscsi_host_priv(shost);
1775         } else
1776                 /*
1777                  * check if the given destination can be reached through
1778                  * a iscsi capable NetXtreme2 device
1779                  */
1780                 hba = bnx2i_check_route(dst_addr);
1781
1782         if (!hba) {
1783                 rc = -EINVAL;
1784                 goto nohba;
1785         }
1786         mutex_lock(&hba->net_dev_lock);
1787
1788         if (bnx2i_adapter_ready(hba) || !hba->cid_que.cid_free_cnt) {
1789                 rc = -EPERM;
1790                 goto check_busy;
1791         }
1792         cnic = hba->cnic;
1793         ep = bnx2i_alloc_ep(hba);
1794         if (!ep) {
1795                 rc = -ENOMEM;
1796                 goto check_busy;
1797         }
1798         bnx2i_ep = ep->dd_data;
1799
1800         atomic_set(&bnx2i_ep->num_active_cmds, 0);
1801         iscsi_cid = bnx2i_alloc_iscsi_cid(hba);
1802         if (iscsi_cid == -1) {
1803                 printk(KERN_ALERT "bnx2i (%s): alloc_ep - unable to allocate "
1804                         "iscsi cid\n", hba->netdev->name);
1805                 rc = -ENOMEM;
1806                 bnx2i_free_ep(ep);
1807                 goto check_busy;
1808         }
1809         bnx2i_ep->hba_age = hba->age;
1810
1811         rc = bnx2i_alloc_qp_resc(hba, bnx2i_ep);
1812         if (rc != 0) {
1813                 printk(KERN_ALERT "bnx2i (%s): ep_conn - alloc QP resc error"
1814                         "\n", hba->netdev->name);
1815                 rc = -ENOMEM;
1816                 goto qp_resc_err;
1817         }
1818
1819         bnx2i_ep->ep_iscsi_cid = (u16)iscsi_cid;
1820         bnx2i_ep->state = EP_STATE_OFLD_START;
1821         bnx2i_ep_ofld_list_add(hba, bnx2i_ep);
1822
1823         init_timer(&bnx2i_ep->ofld_timer);
1824         bnx2i_ep->ofld_timer.expires = 2 * HZ + jiffies;
1825         bnx2i_ep->ofld_timer.function = bnx2i_ep_ofld_timer;
1826         bnx2i_ep->ofld_timer.data = (unsigned long) bnx2i_ep;
1827         add_timer(&bnx2i_ep->ofld_timer);
1828
1829         if (bnx2i_send_conn_ofld_req(hba, bnx2i_ep)) {
1830                 if (bnx2i_ep->state == EP_STATE_OFLD_FAILED_CID_BUSY) {
1831                         printk(KERN_ALERT "bnx2i (%s): iscsi cid %d is busy\n",
1832                                 hba->netdev->name, bnx2i_ep->ep_iscsi_cid);
1833                         rc = -EBUSY;
1834                 } else
1835                         rc = -ENOSPC;
1836                 printk(KERN_ALERT "bnx2i (%s): unable to send conn offld kwqe"
1837                         "\n", hba->netdev->name);
1838                 bnx2i_ep_ofld_list_del(hba, bnx2i_ep);
1839                 goto conn_failed;
1840         }
1841
1842         /* Wait for CNIC hardware to setup conn context and return 'cid' */
1843         wait_event_interruptible(bnx2i_ep->ofld_wait,
1844                                  bnx2i_ep->state != EP_STATE_OFLD_START);
1845
1846         if (signal_pending(current))
1847                 flush_signals(current);
1848         del_timer_sync(&bnx2i_ep->ofld_timer);
1849
1850         bnx2i_ep_ofld_list_del(hba, bnx2i_ep);
1851
1852         if (bnx2i_ep->state != EP_STATE_OFLD_COMPL) {
1853                 if (bnx2i_ep->state == EP_STATE_OFLD_FAILED_CID_BUSY) {
1854                         printk(KERN_ALERT "bnx2i (%s): iscsi cid %d is busy\n",
1855                                 hba->netdev->name, bnx2i_ep->ep_iscsi_cid);
1856                         rc = -EBUSY;
1857                 } else
1858                         rc = -ENOSPC;
1859                 goto conn_failed;
1860         }
1861
1862         rc = cnic->cm_create(cnic, CNIC_ULP_ISCSI, bnx2i_ep->ep_cid,
1863                              iscsi_cid, &bnx2i_ep->cm_sk, bnx2i_ep);
1864         if (rc) {
1865                 rc = -EINVAL;
1866                 /* Need to terminate and cleanup the connection */
1867                 goto release_ep;
1868         }
1869
1870         bnx2i_ep->cm_sk->rcv_buf = 256 * 1024;
1871         bnx2i_ep->cm_sk->snd_buf = 256 * 1024;
1872         clear_bit(SK_TCP_TIMESTAMP, &bnx2i_ep->cm_sk->tcp_flags);
1873
1874         memset(&saddr, 0, sizeof(saddr));
1875         if (dst_addr->sa_family == AF_INET) {
1876                 desti = (struct sockaddr_in *) dst_addr;
1877                 saddr.remote.v4 = *desti;
1878                 saddr.local.v4.sin_family = desti->sin_family;
1879         } else if (dst_addr->sa_family == AF_INET6) {
1880                 desti6 = (struct sockaddr_in6 *) dst_addr;
1881                 saddr.remote.v6 = *desti6;
1882                 saddr.local.v6.sin6_family = desti6->sin6_family;
1883         }
1884
1885         bnx2i_ep->timestamp = jiffies;
1886         bnx2i_ep->state = EP_STATE_CONNECT_START;
1887         if (!test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) {
1888                 rc = -EINVAL;
1889                 goto conn_failed;
1890         } else
1891                 rc = cnic->cm_connect(bnx2i_ep->cm_sk, &saddr);
1892         if (rc)
1893                 goto release_ep;
1894
1895         bnx2i_ep_active_list_add(hba, bnx2i_ep);
1896
1897         if (bnx2i_map_ep_dbell_regs(bnx2i_ep))
1898                 goto del_active_ep;
1899
1900         mutex_unlock(&hba->net_dev_lock);
1901         return ep;
1902
1903 del_active_ep:
1904         bnx2i_ep_active_list_del(hba, bnx2i_ep);
1905 release_ep:
1906         if (bnx2i_tear_down_conn(hba, bnx2i_ep)) {
1907                 mutex_unlock(&hba->net_dev_lock);
1908                 return ERR_PTR(rc);
1909         }
1910 conn_failed:
1911         bnx2i_free_qp_resc(hba, bnx2i_ep);
1912 qp_resc_err:
1913         bnx2i_free_ep(ep);
1914 check_busy:
1915         mutex_unlock(&hba->net_dev_lock);
1916 nohba:
1917         return ERR_PTR(rc);
1918 }
1919
1920
1921 /**
1922  * bnx2i_ep_poll - polls for TCP connection establishement
1923  * @ep:                 TCP connection (endpoint) handle
1924  * @timeout_ms:         timeout value in milli secs
1925  *
1926  * polls for TCP connect request to complete
1927  */
1928 static int bnx2i_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1929 {
1930         struct bnx2i_endpoint *bnx2i_ep;
1931         int rc = 0;
1932
1933         bnx2i_ep = ep->dd_data;
1934         if ((bnx2i_ep->state == EP_STATE_IDLE) ||
1935             (bnx2i_ep->state == EP_STATE_CONNECT_FAILED) ||
1936             (bnx2i_ep->state == EP_STATE_OFLD_FAILED))
1937                 return -1;
1938         if (bnx2i_ep->state == EP_STATE_CONNECT_COMPL)
1939                 return 1;
1940
1941         rc = wait_event_interruptible_timeout(bnx2i_ep->ofld_wait,
1942                                               ((bnx2i_ep->state ==
1943                                                 EP_STATE_OFLD_FAILED) ||
1944                                                (bnx2i_ep->state ==
1945                                                 EP_STATE_CONNECT_FAILED) ||
1946                                                (bnx2i_ep->state ==
1947                                                 EP_STATE_CONNECT_COMPL)),
1948                                               msecs_to_jiffies(timeout_ms));
1949         if (bnx2i_ep->state == EP_STATE_OFLD_FAILED)
1950                 rc = -1;
1951
1952         if (rc > 0)
1953                 return 1;
1954         else if (!rc)
1955                 return 0;       /* timeout */
1956         else
1957                 return rc;
1958 }
1959
1960
1961 /**
1962  * bnx2i_ep_tcp_conn_active - check EP state transition
1963  * @ep:         endpoint pointer
1964  *
1965  * check if underlying TCP connection is active
1966  */
1967 static int bnx2i_ep_tcp_conn_active(struct bnx2i_endpoint *bnx2i_ep)
1968 {
1969         int ret;
1970         int cnic_dev_10g = 0;
1971
1972         if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_ep->hba->cnic_dev_type))
1973                 cnic_dev_10g = 1;
1974
1975         switch (bnx2i_ep->state) {
1976         case EP_STATE_CLEANUP_FAILED:
1977         case EP_STATE_OFLD_FAILED:
1978         case EP_STATE_DISCONN_TIMEDOUT:
1979                 ret = 0;
1980                 break;
1981         case EP_STATE_CONNECT_START:
1982         case EP_STATE_CONNECT_FAILED:
1983         case EP_STATE_CONNECT_COMPL:
1984         case EP_STATE_ULP_UPDATE_START:
1985         case EP_STATE_ULP_UPDATE_COMPL:
1986         case EP_STATE_TCP_FIN_RCVD:
1987         case EP_STATE_LOGOUT_SENT:
1988         case EP_STATE_LOGOUT_RESP_RCVD:
1989         case EP_STATE_ULP_UPDATE_FAILED:
1990                 ret = 1;
1991                 break;
1992         case EP_STATE_TCP_RST_RCVD:
1993                 if (cnic_dev_10g)
1994                         ret = 0;
1995                 else
1996                         ret = 1;
1997                 break;
1998         default:
1999                 ret = 0;
2000         }
2001
2002         return ret;
2003 }
2004
2005
2006 /*
2007  * bnx2i_hw_ep_disconnect - executes TCP connection teardown process in the hw
2008  * @ep:         TCP connection (bnx2i endpoint) handle
2009  *
2010  * executes  TCP connection teardown process
2011  */
2012 int bnx2i_hw_ep_disconnect(struct bnx2i_endpoint *bnx2i_ep)
2013 {
2014         struct bnx2i_hba *hba = bnx2i_ep->hba;
2015         struct cnic_dev *cnic;
2016         struct iscsi_session *session = NULL;
2017         struct iscsi_conn *conn = NULL;
2018         int ret = 0;
2019         int close = 0;
2020         int close_ret = 0;
2021
2022         if (!hba)
2023                 return 0;
2024
2025         cnic = hba->cnic;
2026         if (!cnic)
2027                 return 0;
2028
2029         if (bnx2i_ep->state == EP_STATE_IDLE ||
2030             bnx2i_ep->state == EP_STATE_DISCONN_TIMEDOUT)
2031                 return 0;
2032
2033         if (!bnx2i_ep_tcp_conn_active(bnx2i_ep))
2034                 goto destroy_conn;
2035
2036         if (bnx2i_ep->conn) {
2037                 conn = bnx2i_ep->conn->cls_conn->dd_data;
2038                 session = conn->session;
2039         }
2040
2041         init_timer(&bnx2i_ep->ofld_timer);
2042         bnx2i_ep->ofld_timer.expires = hba->conn_teardown_tmo + jiffies;
2043         bnx2i_ep->ofld_timer.function = bnx2i_ep_ofld_timer;
2044         bnx2i_ep->ofld_timer.data = (unsigned long) bnx2i_ep;
2045         add_timer(&bnx2i_ep->ofld_timer);
2046
2047         if (!test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic))
2048                 goto out;
2049
2050         if (session) {
2051                 spin_lock_bh(&session->lock);
2052                 if (bnx2i_ep->state != EP_STATE_TCP_FIN_RCVD) {
2053                         if (session->state == ISCSI_STATE_LOGGING_OUT) {
2054                                 if (bnx2i_ep->state == EP_STATE_LOGOUT_SENT) {
2055                                         /* Logout sent, but no resp */
2056                                         printk(KERN_ALERT "bnx2i (%s): WARNING"
2057                                                 " logout response was not "
2058                                                 "received!\n",
2059                                                 bnx2i_ep->hba->netdev->name);
2060                                 } else if (bnx2i_ep->state ==
2061                                            EP_STATE_LOGOUT_RESP_RCVD)
2062                                         close = 1;
2063                         }
2064                 } else
2065                         close = 1;
2066
2067                 spin_unlock_bh(&session->lock);
2068         }
2069
2070         bnx2i_ep->state = EP_STATE_DISCONN_START;
2071
2072         if (close)
2073                 close_ret = cnic->cm_close(bnx2i_ep->cm_sk);
2074         else
2075                 close_ret = cnic->cm_abort(bnx2i_ep->cm_sk);
2076
2077         if (close_ret)
2078                 printk(KERN_ALERT "bnx2i (%s): close/abort(%d) returned %d\n",
2079                         bnx2i_ep->hba->netdev->name, close, close_ret);
2080         else
2081                 /* wait for option-2 conn teardown */
2082                 wait_event_interruptible(bnx2i_ep->ofld_wait,
2083                                  bnx2i_ep->state != EP_STATE_DISCONN_START);
2084
2085         if (signal_pending(current))
2086                 flush_signals(current);
2087         del_timer_sync(&bnx2i_ep->ofld_timer);
2088
2089 destroy_conn:
2090         bnx2i_ep_active_list_del(hba, bnx2i_ep);
2091         if (bnx2i_tear_down_conn(hba, bnx2i_ep))
2092                 return -EINVAL;
2093 out:
2094         bnx2i_ep->state = EP_STATE_IDLE;
2095         return ret;
2096 }
2097
2098
2099 /**
2100  * bnx2i_ep_disconnect - executes TCP connection teardown process
2101  * @ep:         TCP connection (iscsi endpoint) handle
2102  *
2103  * executes  TCP connection teardown process
2104  */
2105 static void bnx2i_ep_disconnect(struct iscsi_endpoint *ep)
2106 {
2107         struct bnx2i_endpoint *bnx2i_ep;
2108         struct bnx2i_conn *bnx2i_conn = NULL;
2109         struct iscsi_conn *conn = NULL;
2110         struct bnx2i_hba *hba;
2111
2112         bnx2i_ep = ep->dd_data;
2113
2114         /* driver should not attempt connection cleanup until TCP_CONNECT
2115          * completes either successfully or fails. Timeout is 9-secs, so
2116          * wait for it to complete
2117          */
2118         while ((bnx2i_ep->state == EP_STATE_CONNECT_START) &&
2119                 !time_after(jiffies, bnx2i_ep->timestamp + (12 * HZ)))
2120                 msleep(250);
2121
2122         if (bnx2i_ep->conn) {
2123                 bnx2i_conn = bnx2i_ep->conn;
2124                 conn = bnx2i_conn->cls_conn->dd_data;
2125                 iscsi_suspend_queue(conn);
2126         }
2127         hba = bnx2i_ep->hba;
2128
2129         mutex_lock(&hba->net_dev_lock);
2130
2131         if (bnx2i_ep->state == EP_STATE_DISCONN_TIMEDOUT)
2132                 goto out;
2133
2134         if (bnx2i_ep->state == EP_STATE_IDLE)
2135                 goto free_resc;
2136
2137         if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) ||
2138             (bnx2i_ep->hba_age != hba->age)) {
2139                 bnx2i_ep_active_list_del(hba, bnx2i_ep);
2140                 goto free_resc;
2141         }
2142
2143         /* Do all chip cleanup here */
2144         if (bnx2i_hw_ep_disconnect(bnx2i_ep)) {
2145                 mutex_unlock(&hba->net_dev_lock);
2146                 return;
2147         }
2148 free_resc:
2149         bnx2i_free_qp_resc(hba, bnx2i_ep);
2150
2151         if (bnx2i_conn)
2152                 bnx2i_conn->ep = NULL;
2153
2154         bnx2i_free_ep(ep);
2155 out:
2156         mutex_unlock(&hba->net_dev_lock);
2157
2158         wake_up_interruptible(&hba->eh_wait);
2159 }
2160
2161
2162 /**
2163  * bnx2i_nl_set_path - ISCSI_UEVENT_PATH_UPDATE user message handler
2164  * @buf:        pointer to buffer containing iscsi path message
2165  *
2166  */
2167 static int bnx2i_nl_set_path(struct Scsi_Host *shost, struct iscsi_path *params)
2168 {
2169         struct bnx2i_hba *hba = iscsi_host_priv(shost);
2170         char *buf = (char *) params;
2171         u16 len = sizeof(*params);
2172
2173         /* handled by cnic driver */
2174         hba->cnic->iscsi_nl_msg_recv(hba->cnic, ISCSI_UEVENT_PATH_UPDATE, buf,
2175                                      len);
2176
2177         return 0;
2178 }
2179
2180
2181 /*
2182  * 'Scsi_Host_Template' structure and 'iscsi_tranport' structure template
2183  * used while registering with the scsi host and iSCSI transport module.
2184  */
2185 static struct scsi_host_template bnx2i_host_template = {
2186         .module                 = THIS_MODULE,
2187         .name                   = "Broadcom Offload iSCSI Initiator",
2188         .proc_name              = "bnx2i",
2189         .queuecommand           = iscsi_queuecommand,
2190         .eh_abort_handler       = iscsi_eh_abort,
2191         .eh_device_reset_handler = iscsi_eh_device_reset,
2192         .eh_target_reset_handler = iscsi_eh_recover_target,
2193         .change_queue_depth     = iscsi_change_queue_depth,
2194         .can_queue              = 2048,
2195         .max_sectors            = 127,
2196         .cmd_per_lun            = 128,
2197         .this_id                = -1,
2198         .use_clustering         = ENABLE_CLUSTERING,
2199         .sg_tablesize           = ISCSI_MAX_BDS_PER_CMD,
2200         .shost_attrs            = bnx2i_dev_attributes,
2201 };
2202
2203 struct iscsi_transport bnx2i_iscsi_transport = {
2204         .owner                  = THIS_MODULE,
2205         .name                   = "bnx2i",
2206         .caps                   = CAP_RECOVERY_L0 | CAP_HDRDGST |
2207                                   CAP_MULTI_R2T | CAP_DATADGST |
2208                                   CAP_DATA_PATH_OFFLOAD |
2209                                   CAP_TEXT_NEGO,
2210         .param_mask             = ISCSI_MAX_RECV_DLENGTH |
2211                                   ISCSI_MAX_XMIT_DLENGTH |
2212                                   ISCSI_HDRDGST_EN |
2213                                   ISCSI_DATADGST_EN |
2214                                   ISCSI_INITIAL_R2T_EN |
2215                                   ISCSI_MAX_R2T |
2216                                   ISCSI_IMM_DATA_EN |
2217                                   ISCSI_FIRST_BURST |
2218                                   ISCSI_MAX_BURST |
2219                                   ISCSI_PDU_INORDER_EN |
2220                                   ISCSI_DATASEQ_INORDER_EN |
2221                                   ISCSI_ERL |
2222                                   ISCSI_CONN_PORT |
2223                                   ISCSI_CONN_ADDRESS |
2224                                   ISCSI_EXP_STATSN |
2225                                   ISCSI_PERSISTENT_PORT |
2226                                   ISCSI_PERSISTENT_ADDRESS |
2227                                   ISCSI_TARGET_NAME | ISCSI_TPGT |
2228                                   ISCSI_USERNAME | ISCSI_PASSWORD |
2229                                   ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN |
2230                                   ISCSI_FAST_ABORT | ISCSI_ABORT_TMO |
2231                                   ISCSI_LU_RESET_TMO | ISCSI_TGT_RESET_TMO |
2232                                   ISCSI_PING_TMO | ISCSI_RECV_TMO |
2233                                   ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME,
2234         .host_param_mask        = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
2235                                   ISCSI_HOST_NETDEV_NAME,
2236         .create_session         = bnx2i_session_create,
2237         .destroy_session        = bnx2i_session_destroy,
2238         .create_conn            = bnx2i_conn_create,
2239         .bind_conn              = bnx2i_conn_bind,
2240         .destroy_conn           = bnx2i_conn_destroy,
2241         .set_param              = iscsi_set_param,
2242         .get_conn_param         = iscsi_conn_get_param,
2243         .get_session_param      = iscsi_session_get_param,
2244         .get_host_param         = bnx2i_host_get_param,
2245         .start_conn             = bnx2i_conn_start,
2246         .stop_conn              = iscsi_conn_stop,
2247         .send_pdu               = iscsi_conn_send_pdu,
2248         .xmit_task              = bnx2i_task_xmit,
2249         .get_stats              = bnx2i_conn_get_stats,
2250         /* TCP connect - disconnect - option-2 interface calls */
2251         .get_ep_param           = bnx2i_ep_get_param,
2252         .ep_connect             = bnx2i_ep_connect,
2253         .ep_poll                = bnx2i_ep_poll,
2254         .ep_disconnect          = bnx2i_ep_disconnect,
2255         .set_path               = bnx2i_nl_set_path,
2256         /* Error recovery timeout call */
2257         .session_recovery_timedout = iscsi_session_recovery_timedout,
2258         .cleanup_task           = bnx2i_cleanup_task,
2259 };