Lines Matching refs:task
137 void iscsi_prep_data_out_pdu(struct iscsi_task *task, struct iscsi_r2t_info *r2t, in iscsi_prep_data_out_pdu() argument
140 struct iscsi_conn *conn = task->conn; in iscsi_prep_data_out_pdu()
143 task->hdr_len = sizeof(struct iscsi_data); in iscsi_prep_data_out_pdu()
150 hdr->lun = task->lun; in iscsi_prep_data_out_pdu()
151 hdr->itt = task->hdr_itt; in iscsi_prep_data_out_pdu()
167 static int iscsi_add_hdr(struct iscsi_task *task, unsigned len) in iscsi_add_hdr() argument
169 unsigned exp_len = task->hdr_len + len; in iscsi_add_hdr()
171 if (exp_len > task->hdr_max) { in iscsi_add_hdr()
177 task->hdr_len = exp_len; in iscsi_add_hdr()
184 static int iscsi_prep_ecdb_ahs(struct iscsi_task *task) in iscsi_prep_ecdb_ahs() argument
186 struct scsi_cmnd *cmd = task->sc; in iscsi_prep_ecdb_ahs()
192 ecdb_ahdr = iscsi_next_hdr(task); in iscsi_prep_ecdb_ahs()
200 rc = iscsi_add_hdr(task, sizeof(ecdb_ahdr->ahslength) + in iscsi_prep_ecdb_ahs()
213 ISCSI_DBG_SESSION(task->conn->session, in iscsi_prep_ecdb_ahs()
217 task->hdr_len); in iscsi_prep_ecdb_ahs()
221 static int iscsi_prep_bidi_ahs(struct iscsi_task *task) in iscsi_prep_bidi_ahs() argument
223 struct scsi_cmnd *sc = task->sc; in iscsi_prep_bidi_ahs()
227 rlen_ahdr = iscsi_next_hdr(task); in iscsi_prep_bidi_ahs()
228 rc = iscsi_add_hdr(task, sizeof(*rlen_ahdr)); in iscsi_prep_bidi_ahs()
239 ISCSI_DBG_SESSION(task->conn->session, in iscsi_prep_bidi_ahs()
260 static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode) in iscsi_check_tmf_restrictions() argument
262 struct iscsi_conn *conn = task->conn; in iscsi_check_tmf_restrictions()
278 if (hdr_lun != task->sc->device->lun) in iscsi_check_tmf_restrictions()
290 opcode, task->itt, in iscsi_check_tmf_restrictions()
291 task->hdr_itt); in iscsi_check_tmf_restrictions()
302 opcode, task->itt, in iscsi_check_tmf_restrictions()
303 task->hdr_itt); in iscsi_check_tmf_restrictions()
315 task->hdr_itt == tmf->rtt) { in iscsi_check_tmf_restrictions()
319 "progress\n", task->itt, in iscsi_check_tmf_restrictions()
320 task->hdr_itt); in iscsi_check_tmf_restrictions()
336 static int iscsi_prep_scsi_cmd_pdu(struct iscsi_task *task) in iscsi_prep_scsi_cmd_pdu() argument
338 struct iscsi_conn *conn = task->conn; in iscsi_prep_scsi_cmd_pdu()
340 struct scsi_cmnd *sc = task->sc; in iscsi_prep_scsi_cmd_pdu()
346 rc = iscsi_check_tmf_restrictions(task, ISCSI_OP_SCSI_CMD); in iscsi_prep_scsi_cmd_pdu()
351 rc = conn->session->tt->alloc_pdu(task, ISCSI_OP_SCSI_CMD); in iscsi_prep_scsi_cmd_pdu()
355 hdr = (struct iscsi_scsi_req *)task->hdr; in iscsi_prep_scsi_cmd_pdu()
360 hdr->itt = task->hdr_itt = itt; in iscsi_prep_scsi_cmd_pdu()
362 hdr->itt = task->hdr_itt = build_itt(task->itt, in iscsi_prep_scsi_cmd_pdu()
363 task->conn->session->age); in iscsi_prep_scsi_cmd_pdu()
364 task->hdr_len = 0; in iscsi_prep_scsi_cmd_pdu()
365 rc = iscsi_add_hdr(task, sizeof(*hdr)); in iscsi_prep_scsi_cmd_pdu()
371 task->lun = hdr->lun; in iscsi_prep_scsi_cmd_pdu()
377 rc = iscsi_prep_ecdb_ahs(task); in iscsi_prep_scsi_cmd_pdu()
384 task->imm_count = 0; in iscsi_prep_scsi_cmd_pdu()
387 rc = iscsi_prep_bidi_ahs(task); in iscsi_prep_scsi_cmd_pdu()
393 task->protected = true; in iscsi_prep_scsi_cmd_pdu()
398 struct iscsi_r2t_info *r2t = &task->unsol_r2t; in iscsi_prep_scsi_cmd_pdu()
419 task->imm_count = min(session->first_burst, in iscsi_prep_scsi_cmd_pdu()
422 task->imm_count = min(transfer_length, in iscsi_prep_scsi_cmd_pdu()
424 hton24(hdr->dlength, task->imm_count); in iscsi_prep_scsi_cmd_pdu()
431 task->imm_count; in iscsi_prep_scsi_cmd_pdu()
432 r2t->data_offset = task->imm_count; in iscsi_prep_scsi_cmd_pdu()
437 if (!task->unsol_r2t.data_length) in iscsi_prep_scsi_cmd_pdu()
449 hdrlength = task->hdr_len - sizeof(*hdr); in iscsi_prep_scsi_cmd_pdu()
456 hdr->cmdsn = task->cmdsn = cpu_to_be32(session->cmdsn); in iscsi_prep_scsi_cmd_pdu()
458 if (session->tt->init_task && session->tt->init_task(task)) in iscsi_prep_scsi_cmd_pdu()
461 task->state = ISCSI_TASK_RUNNING; in iscsi_prep_scsi_cmd_pdu()
470 task->itt, transfer_length, in iscsi_prep_scsi_cmd_pdu()
485 static void iscsi_free_task(struct iscsi_task *task) in iscsi_free_task() argument
487 struct iscsi_conn *conn = task->conn; in iscsi_free_task()
489 struct scsi_cmnd *sc = task->sc; in iscsi_free_task()
490 int oldstate = task->state; in iscsi_free_task()
493 task->itt, task->state, task->sc); in iscsi_free_task()
495 session->tt->cleanup_task(task); in iscsi_free_task()
496 task->state = ISCSI_TASK_FREE; in iscsi_free_task()
497 task->sc = NULL; in iscsi_free_task()
501 if (conn->login_task == task) in iscsi_free_task()
504 kfifo_in(&session->cmdpool.queue, (void*)&task, sizeof(void*)); in iscsi_free_task()
518 void __iscsi_get_task(struct iscsi_task *task) in __iscsi_get_task() argument
520 refcount_inc(&task->refcount); in __iscsi_get_task()
524 void __iscsi_put_task(struct iscsi_task *task) in __iscsi_put_task() argument
526 if (refcount_dec_and_test(&task->refcount)) in __iscsi_put_task()
527 iscsi_free_task(task); in __iscsi_put_task()
531 void iscsi_put_task(struct iscsi_task *task) in iscsi_put_task() argument
533 struct iscsi_session *session = task->conn->session; in iscsi_put_task()
537 __iscsi_put_task(task); in iscsi_put_task()
549 static void iscsi_complete_task(struct iscsi_task *task, int state) in iscsi_complete_task() argument
551 struct iscsi_conn *conn = task->conn; in iscsi_complete_task()
555 task->itt, task->state, task->sc); in iscsi_complete_task()
556 if (task->state == ISCSI_TASK_COMPLETED || in iscsi_complete_task()
557 task->state == ISCSI_TASK_ABRT_TMF || in iscsi_complete_task()
558 task->state == ISCSI_TASK_ABRT_SESS_RECOV || in iscsi_complete_task()
559 task->state == ISCSI_TASK_REQUEUE_SCSIQ) in iscsi_complete_task()
561 WARN_ON_ONCE(task->state == ISCSI_TASK_FREE); in iscsi_complete_task()
562 task->state = state; in iscsi_complete_task()
565 if (!list_empty(&task->running)) { in iscsi_complete_task()
567 list_del_init(&task->running); in iscsi_complete_task()
571 if (conn->task == task) in iscsi_complete_task()
572 conn->task = NULL; in iscsi_complete_task()
574 if (conn->ping_task == task) in iscsi_complete_task()
578 __iscsi_put_task(task); in iscsi_complete_task()
592 void iscsi_complete_scsi_task(struct iscsi_task *task, in iscsi_complete_scsi_task() argument
595 struct iscsi_conn *conn = task->conn; in iscsi_complete_scsi_task()
597 ISCSI_DBG_SESSION(conn->session, "[itt 0x%x]\n", task->itt); in iscsi_complete_scsi_task()
601 iscsi_complete_task(task, ISCSI_TASK_COMPLETED); in iscsi_complete_scsi_task()
611 static void fail_scsi_task(struct iscsi_task *task, int err) in fail_scsi_task() argument
613 struct iscsi_conn *conn = task->conn; in fail_scsi_task()
622 sc = task->sc; in fail_scsi_task()
626 if (task->state == ISCSI_TASK_PENDING) { in fail_scsi_task()
649 iscsi_complete_task(task, state); in fail_scsi_task()
654 struct iscsi_task *task) in iscsi_prep_mgmt_task() argument
657 struct iscsi_hdr *hdr = task->hdr; in iscsi_prep_mgmt_task()
686 if (session->tt->init_task && session->tt->init_task(task)) in iscsi_prep_mgmt_task()
692 task->state = ISCSI_TASK_RUNNING; in iscsi_prep_mgmt_task()
695 hdr->itt, task->data_count); in iscsi_prep_mgmt_task()
706 struct iscsi_task *task; in __iscsi_conn_send_pdu() local
730 task = conn->login_task; in __iscsi_conn_send_pdu()
744 (void*)&task, sizeof(void*))) in __iscsi_conn_send_pdu()
752 refcount_set(&task->refcount, 1); in __iscsi_conn_send_pdu()
753 task->conn = conn; in __iscsi_conn_send_pdu()
754 task->sc = NULL; in __iscsi_conn_send_pdu()
755 INIT_LIST_HEAD(&task->running); in __iscsi_conn_send_pdu()
756 task->state = ISCSI_TASK_PENDING; in __iscsi_conn_send_pdu()
759 memcpy(task->data, data, data_size); in __iscsi_conn_send_pdu()
760 task->data_count = data_size; in __iscsi_conn_send_pdu()
762 task->data_count = 0; in __iscsi_conn_send_pdu()
765 if (conn->session->tt->alloc_pdu(task, hdr->opcode)) { in __iscsi_conn_send_pdu()
772 itt = task->hdr->itt; in __iscsi_conn_send_pdu()
773 task->hdr_len = sizeof(struct iscsi_hdr); in __iscsi_conn_send_pdu()
774 memcpy(task->hdr, hdr, sizeof(struct iscsi_hdr)); in __iscsi_conn_send_pdu()
778 task->hdr->itt = itt; in __iscsi_conn_send_pdu()
780 task->hdr->itt = build_itt(task->itt, in __iscsi_conn_send_pdu()
781 task->conn->session->age); in __iscsi_conn_send_pdu()
785 if (iscsi_prep_mgmt_task(conn, task)) in __iscsi_conn_send_pdu()
788 if (session->tt->xmit_task(task)) in __iscsi_conn_send_pdu()
792 list_add_tail(&task->running, &conn->mgmtqueue); in __iscsi_conn_send_pdu()
797 return task; in __iscsi_conn_send_pdu()
802 __iscsi_put_task(task); in __iscsi_conn_send_pdu()
834 struct iscsi_task *task, char *data, in iscsi_scsi_cmd_rsp() argument
839 struct scsi_cmnd *sc = task->sc; in iscsi_scsi_cmd_rsp()
846 if (task->protected) { in iscsi_scsi_cmd_rsp()
857 ascq = session->tt->check_protection(task, §or); in iscsi_scsi_cmd_rsp()
924 sc, sc->result, task->itt); in iscsi_scsi_cmd_rsp()
926 iscsi_complete_task(task, ISCSI_TASK_COMPLETED); in iscsi_scsi_cmd_rsp()
937 struct iscsi_task *task) in iscsi_data_in_rsp() argument
940 struct scsi_cmnd *sc = task->sc; in iscsi_data_in_rsp()
962 sc, sc->result, task->itt); in iscsi_data_in_rsp()
964 iscsi_complete_task(task, ISCSI_TASK_COMPLETED); in iscsi_data_in_rsp()
989 struct iscsi_task *task; in iscsi_send_nopout() local
1005 task = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)&hdr, NULL, 0); in iscsi_send_nopout()
1006 if (!task) { in iscsi_send_nopout()
1011 conn->ping_task = task; in iscsi_send_nopout()
1018 static int iscsi_nop_out_rsp(struct iscsi_task *task, in iscsi_nop_out_rsp() argument
1021 struct iscsi_conn *conn = task->conn; in iscsi_nop_out_rsp()
1024 if (conn->ping_task != task) { in iscsi_nop_out_rsp()
1034 iscsi_complete_task(task, ISCSI_TASK_COMPLETED); in iscsi_nop_out_rsp()
1094 struct iscsi_task *task; in iscsi_handle_reject() local
1099 task = iscsi_itt_to_task(conn, rejected_pdu.itt); in iscsi_handle_reject()
1100 if (!task) { in iscsi_handle_reject()
1106 rc = iscsi_nop_out_rsp(task, in iscsi_handle_reject()
1166 struct iscsi_task *task; in __iscsi_complete_pdu() local
1220 task = iscsi_itt_to_ctask(conn, hdr->itt); in __iscsi_complete_pdu()
1221 if (!task) in __iscsi_complete_pdu()
1223 task->last_xfer = jiffies; in __iscsi_complete_pdu()
1235 task = iscsi_itt_to_task(conn, hdr->itt); in __iscsi_complete_pdu()
1236 if (!task) in __iscsi_complete_pdu()
1245 iscsi_scsi_cmd_rsp(conn, hdr, task, data, datalen); in __iscsi_complete_pdu()
1248 iscsi_data_in_rsp(conn, hdr, task); in __iscsi_complete_pdu()
1274 iscsi_complete_task(task, ISCSI_TASK_COMPLETED); in __iscsi_complete_pdu()
1284 rc = iscsi_nop_out_rsp(task, (struct iscsi_nopin*)hdr, in __iscsi_complete_pdu()
1297 iscsi_complete_task(task, ISCSI_TASK_COMPLETED); in __iscsi_complete_pdu()
1357 struct iscsi_task *task; in iscsi_itt_to_ctask() local
1362 task = iscsi_itt_to_task(conn, itt); in iscsi_itt_to_ctask()
1363 if (!task || !task->sc) in iscsi_itt_to_ctask()
1366 if (task->sc->SCp.phase != conn->session->age) { in iscsi_itt_to_ctask()
1369 task->sc->SCp.phase, conn->session->age); in iscsi_itt_to_ctask()
1373 return task; in iscsi_itt_to_ctask()
1446 struct iscsi_task *task = conn->task; in iscsi_xmit_task() local
1452 __iscsi_get_task(task); in iscsi_xmit_task()
1454 rc = conn->session->tt->xmit_task(task); in iscsi_xmit_task()
1458 task->last_xfer = jiffies; in iscsi_xmit_task()
1459 conn->task = NULL; in iscsi_xmit_task()
1463 __iscsi_put_task(task); in iscsi_xmit_task()
1476 void iscsi_requeue_task(struct iscsi_task *task) in iscsi_requeue_task() argument
1478 struct iscsi_conn *conn = task->conn; in iscsi_requeue_task()
1485 if (list_empty(&task->running)) in iscsi_requeue_task()
1486 list_add_tail(&task->running, &conn->requeue); in iscsi_requeue_task()
1503 struct iscsi_task *task; in iscsi_data_xmit() local
1513 if (conn->task) { in iscsi_data_xmit()
1527 conn->task = list_entry(conn->mgmtqueue.next, in iscsi_data_xmit()
1529 list_del_init(&conn->task->running); in iscsi_data_xmit()
1531 if (iscsi_prep_mgmt_task(conn, conn->task)) { in iscsi_data_xmit()
1534 __iscsi_put_task(conn->task); in iscsi_data_xmit()
1536 conn->task = NULL; in iscsi_data_xmit()
1548 conn->task = list_entry(conn->cmdqueue.next, struct iscsi_task, in iscsi_data_xmit()
1550 list_del_init(&conn->task->running); in iscsi_data_xmit()
1553 fail_scsi_task(conn->task, DID_IMM_RETRY); in iscsi_data_xmit()
1557 rc = iscsi_prep_scsi_cmd_pdu(conn->task); in iscsi_data_xmit()
1561 list_add_tail(&conn->task->running, in iscsi_data_xmit()
1563 conn->task = NULL; in iscsi_data_xmit()
1567 fail_scsi_task(conn->task, DID_ABORT); in iscsi_data_xmit()
1591 task = list_entry(conn->requeue.next, struct iscsi_task, in iscsi_data_xmit()
1593 if (iscsi_check_tmf_restrictions(task, ISCSI_OP_SCSI_DATA_OUT)) in iscsi_data_xmit()
1596 conn->task = task; in iscsi_data_xmit()
1597 list_del_init(&conn->task->running); in iscsi_data_xmit()
1598 conn->task->state = ISCSI_TASK_RUNNING; in iscsi_data_xmit()
1632 struct iscsi_task *task; in iscsi_alloc_task() local
1635 (void *) &task, sizeof(void *))) in iscsi_alloc_task()
1639 sc->SCp.ptr = (char *) task; in iscsi_alloc_task()
1641 refcount_set(&task->refcount, 1); in iscsi_alloc_task()
1642 task->state = ISCSI_TASK_PENDING; in iscsi_alloc_task()
1643 task->conn = conn; in iscsi_alloc_task()
1644 task->sc = sc; in iscsi_alloc_task()
1645 task->have_checked_conn = false; in iscsi_alloc_task()
1646 task->last_timeout = jiffies; in iscsi_alloc_task()
1647 task->last_xfer = jiffies; in iscsi_alloc_task()
1648 task->protected = false; in iscsi_alloc_task()
1649 INIT_LIST_HEAD(&task->running); in iscsi_alloc_task()
1650 return task; in iscsi_alloc_task()
1673 struct iscsi_task *task = NULL; in iscsi_queuecommand() local
1750 task = iscsi_alloc_task(conn, sc); in iscsi_queuecommand()
1751 if (!task) { in iscsi_queuecommand()
1757 reason = iscsi_prep_scsi_cmd_pdu(task); in iscsi_queuecommand()
1767 if (session->tt->xmit_task(task)) { in iscsi_queuecommand()
1774 list_add_tail(&task->running, &conn->cmdqueue); in iscsi_queuecommand()
1784 iscsi_complete_task(task, ISCSI_TASK_REQUEUE_SCSIQ); in iscsi_queuecommand()
1792 iscsi_complete_task(task, ISCSI_TASK_REQUEUE_SCSIQ); in iscsi_queuecommand()
1839 struct iscsi_task *task; in iscsi_exec_task_mgmt_fn() local
1841 task = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)hdr, in iscsi_exec_task_mgmt_fn()
1843 if (!task) { in iscsi_exec_task_mgmt_fn()
1888 struct iscsi_task *task; in fail_scsi_tasks() local
1892 task = conn->session->cmds[i]; in fail_scsi_tasks()
1893 if (!task->sc || task->state == ISCSI_TASK_FREE) in fail_scsi_tasks()
1896 if (lun != -1 && lun != task->sc->device->lun) in fail_scsi_tasks()
1901 task->sc, task->itt, task->state); in fail_scsi_tasks()
1902 fail_scsi_task(task, error); in fail_scsi_tasks()
1969 struct iscsi_task *task = NULL, *running_task; in iscsi_eh_cmd_timed_out() local
1981 task = (struct iscsi_task *)sc->SCp.ptr; in iscsi_eh_cmd_timed_out()
1982 if (!task) { in iscsi_eh_cmd_timed_out()
2027 if (time_after(task->last_xfer, task->last_timeout)) { in iscsi_eh_cmd_timed_out()
2031 "%lu\n.", task->last_xfer, task->last_timeout); in iscsi_eh_cmd_timed_out()
2032 task->have_checked_conn = false; in iscsi_eh_cmd_timed_out()
2050 if (!running_task->sc || running_task == task || in iscsi_eh_cmd_timed_out()
2059 task->sc->jiffies_at_alloc)) in iscsi_eh_cmd_timed_out()
2062 if (time_after(running_task->last_xfer, task->last_timeout)) { in iscsi_eh_cmd_timed_out()
2078 task->last_xfer, running_task->last_xfer, in iscsi_eh_cmd_timed_out()
2079 task->last_timeout); in iscsi_eh_cmd_timed_out()
2086 if (task->have_checked_conn) in iscsi_eh_cmd_timed_out()
2094 task->have_checked_conn = true; in iscsi_eh_cmd_timed_out()
2101 task->have_checked_conn = true; in iscsi_eh_cmd_timed_out()
2105 if (task) in iscsi_eh_cmd_timed_out()
2106 task->last_timeout = jiffies; in iscsi_eh_cmd_timed_out()
2158 static void iscsi_prep_abort_task_pdu(struct iscsi_task *task, in iscsi_prep_abort_task_pdu() argument
2165 hdr->lun = task->lun; in iscsi_prep_abort_task_pdu()
2166 hdr->rtt = task->hdr_itt; in iscsi_prep_abort_task_pdu()
2167 hdr->refcmdsn = task->cmdsn; in iscsi_prep_abort_task_pdu()
2175 struct iscsi_task *task; in iscsi_eh_abort() local
2215 task = (struct iscsi_task *)sc->SCp.ptr; in iscsi_eh_abort()
2217 sc, task->itt); in iscsi_eh_abort()
2220 if (!task->sc) { in iscsi_eh_abort()
2225 if (task->state == ISCSI_TASK_PENDING) { in iscsi_eh_abort()
2226 fail_scsi_task(task, DID_ABORT); in iscsi_eh_abort()
2236 iscsi_prep_abort_task_pdu(task, hdr); in iscsi_eh_abort()
2255 fail_scsi_task(task, DID_ABORT); in iscsi_eh_abort()
2284 sc, task->itt); in iscsi_eh_abort()
2292 task ? task->itt : 0); in iscsi_eh_abort()
2846 struct iscsi_task *task = session->cmds[cmd_i]; in iscsi_session_setup() local
2849 task->dd_data = &task[1]; in iscsi_session_setup()
2850 task->itt = cmd_i; in iscsi_session_setup()
2851 task->state = ISCSI_TASK_FREE; in iscsi_session_setup()
2852 INIT_LIST_HEAD(&task->running); in iscsi_session_setup()
3097 struct iscsi_task *task; in fail_mgmt_tasks() local
3101 task = conn->session->cmds[i]; in fail_mgmt_tasks()
3102 if (task->sc) in fail_mgmt_tasks()
3105 if (task->state == ISCSI_TASK_FREE) in fail_mgmt_tasks()
3110 task->itt, task->state); in fail_mgmt_tasks()
3112 if (task->state == ISCSI_TASK_PENDING) in fail_mgmt_tasks()
3114 iscsi_complete_task(task, state); in fail_mgmt_tasks()