libiscsi.c (1669b049db50fc7f1d4e694fb115a0f408c63fce) libiscsi.c (b8b9e1b8128d8854cf55740f9ceba3010143520d)
1/*
2 * iSCSI lib functions
3 *
4 * Copyright (C) 2006 Red Hat, Inc. All rights reserved.
5 * Copyright (C) 2004 - 2006 Mike Christie
6 * Copyright (C) 2004 - 2005 Dmitry Yusupov
7 * Copyright (C) 2004 - 2005 Alex Aizman
8 * maintained by open-iscsi@googlegroups.com

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2431 * a session per scsi host.
2432 *
2433 * Callers should set cmds_max to the largest total numer (mgmt + scsi) of
2434 * tasks they support. The iscsi layer reserves ISCSI_MGMT_CMDS_MAX tasks
2435 * for nop handling and login/logout requests.
2436 */
2437struct iscsi_cls_session *
2438iscsi_session_setup(struct iscsi_transport *iscsit, struct Scsi_Host *shost,
1/*
2 * iSCSI lib functions
3 *
4 * Copyright (C) 2006 Red Hat, Inc. All rights reserved.
5 * Copyright (C) 2004 - 2006 Mike Christie
6 * Copyright (C) 2004 - 2005 Dmitry Yusupov
7 * Copyright (C) 2004 - 2005 Alex Aizman
8 * maintained by open-iscsi@googlegroups.com

--- 2422 unchanged lines hidden (view full) ---

2431 * a session per scsi host.
2432 *
2433 * Callers should set cmds_max to the largest total numer (mgmt + scsi) of
2434 * tasks they support. The iscsi layer reserves ISCSI_MGMT_CMDS_MAX tasks
2435 * for nop handling and login/logout requests.
2436 */
2437struct iscsi_cls_session *
2438iscsi_session_setup(struct iscsi_transport *iscsit, struct Scsi_Host *shost,
2439 uint16_t cmds_max, int cmd_task_size,
2439 uint16_t cmds_max, int dd_size, int cmd_task_size,
2440 uint32_t initial_cmdsn, unsigned int id)
2441{
2442 struct iscsi_host *ihost = shost_priv(shost);
2443 struct iscsi_session *session;
2444 struct iscsi_cls_session *cls_session;
2445 int cmd_i, scsi_cmds, total_cmds = cmds_max;
2446 unsigned long flags;
2447

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2481 if (total_cmds < ISCSI_TOTAL_CMDS_MIN)
2482 return NULL;
2483 printk(KERN_INFO "iscsi: Rounding can_queue to %d.\n",
2484 total_cmds);
2485 }
2486 scsi_cmds = total_cmds - ISCSI_MGMT_CMDS_MAX;
2487
2488 cls_session = iscsi_alloc_session(shost, iscsit,
2440 uint32_t initial_cmdsn, unsigned int id)
2441{
2442 struct iscsi_host *ihost = shost_priv(shost);
2443 struct iscsi_session *session;
2444 struct iscsi_cls_session *cls_session;
2445 int cmd_i, scsi_cmds, total_cmds = cmds_max;
2446 unsigned long flags;
2447

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2481 if (total_cmds < ISCSI_TOTAL_CMDS_MIN)
2482 return NULL;
2483 printk(KERN_INFO "iscsi: Rounding can_queue to %d.\n",
2484 total_cmds);
2485 }
2486 scsi_cmds = total_cmds - ISCSI_MGMT_CMDS_MAX;
2487
2488 cls_session = iscsi_alloc_session(shost, iscsit,
2489 sizeof(struct iscsi_session));
2489 sizeof(struct iscsi_session) +
2490 dd_size);
2490 if (!cls_session)
2491 goto dec_session_count;
2492 session = cls_session->dd_data;
2493 session->cls_session = cls_session;
2494 session->host = shost;
2495 session->state = ISCSI_STATE_FREE;
2496 session->fast_abort = 1;
2497 session->lu_reset_timeout = 15;
2498 session->abort_timeout = 10;
2499 session->scsi_cmds_max = scsi_cmds;
2500 session->cmds_max = total_cmds;
2501 session->queued_cmdsn = session->cmdsn = initial_cmdsn;
2502 session->exp_cmdsn = initial_cmdsn + 1;
2503 session->max_cmdsn = initial_cmdsn + 1;
2504 session->max_r2t = 1;
2505 session->tt = iscsit;
2491 if (!cls_session)
2492 goto dec_session_count;
2493 session = cls_session->dd_data;
2494 session->cls_session = cls_session;
2495 session->host = shost;
2496 session->state = ISCSI_STATE_FREE;
2497 session->fast_abort = 1;
2498 session->lu_reset_timeout = 15;
2499 session->abort_timeout = 10;
2500 session->scsi_cmds_max = scsi_cmds;
2501 session->cmds_max = total_cmds;
2502 session->queued_cmdsn = session->cmdsn = initial_cmdsn;
2503 session->exp_cmdsn = initial_cmdsn + 1;
2504 session->max_cmdsn = initial_cmdsn + 1;
2505 session->max_r2t = 1;
2506 session->tt = iscsit;
2507 session->dd_data = cls_session->dd_data + sizeof(*session);
2506 mutex_init(&session->eh_mutex);
2507 spin_lock_init(&session->lock);
2508
2509 /* initialize SCSI PDU commands pool */
2510 if (iscsi_pool_init(&session->cmdpool, session->cmds_max,
2511 (void***)&session->cmds,
2512 cmd_task_size + sizeof(struct iscsi_task)))
2513 goto cmdpool_alloc_fail;

--- 672 unchanged lines hidden --- 		2508 mutex_init(&session->eh_mutex);
2509 spin_lock_init(&session->lock);
2510
2511 /* initialize SCSI PDU commands pool */
2512 if (iscsi_pool_init(&session->cmdpool, session->cmds_max,
2513 (void***)&session->cmds,
2514 cmd_task_size + sizeof(struct iscsi_task)))
2515 goto cmdpool_alloc_fail;

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