Lines Matching refs:conn
86 inline void iscsi_conn_queue_work(struct iscsi_conn *conn) in iscsi_conn_queue_work() argument
88 struct Scsi_Host *shost = conn->session->host; in iscsi_conn_queue_work()
92 queue_work(ihost->workq, &conn->xmitwork); in iscsi_conn_queue_work()
137 struct iscsi_conn *conn = task->conn; in iscsi_prep_data_out_pdu() local
151 if (left > conn->max_xmit_dlength) { in iscsi_prep_data_out_pdu()
152 hton24(hdr->dlength, conn->max_xmit_dlength); in iscsi_prep_data_out_pdu()
153 r2t->data_count = conn->max_xmit_dlength; in iscsi_prep_data_out_pdu()
160 conn->dataout_pdus_cnt++; in iscsi_prep_data_out_pdu()
210 ISCSI_DBG_SESSION(task->conn->session, in iscsi_prep_ecdb_ahs()
233 struct iscsi_session *session = task->conn->session; in iscsi_check_tmf_restrictions()
304 struct iscsi_conn *conn = task->conn; in iscsi_prep_scsi_cmd_pdu() local
305 struct iscsi_session *session = conn->session; in iscsi_prep_scsi_cmd_pdu()
316 if (conn->session->tt->alloc_pdu) { in iscsi_prep_scsi_cmd_pdu()
317 rc = conn->session->tt->alloc_pdu(task, ISCSI_OP_SCSI_CMD); in iscsi_prep_scsi_cmd_pdu()
329 task->conn->session->age); in iscsi_prep_scsi_cmd_pdu()
338 hdr->exp_statsn = cpu_to_be32(conn->exp_statsn); in iscsi_prep_scsi_cmd_pdu()
379 conn->max_xmit_dlength); in iscsi_prep_scsi_cmd_pdu()
382 conn->max_xmit_dlength); in iscsi_prep_scsi_cmd_pdu()
393 r2t->exp_statsn = cpu_to_be32(conn->exp_statsn); in iscsi_prep_scsi_cmd_pdu()
423 conn->scsicmd_pdus_cnt++; in iscsi_prep_scsi_cmd_pdu()
427 "write" : "read", conn->id, sc, sc->cmnd[0], in iscsi_prep_scsi_cmd_pdu()
444 struct iscsi_conn *conn = task->conn; in iscsi_free_task() local
445 struct iscsi_session *session = conn->session; in iscsi_free_task()
458 if (conn->login_task == task) in iscsi_free_task()
490 struct iscsi_session *session = task->conn->session; in iscsi_put_task()
508 struct iscsi_conn *conn = task->conn; in iscsi_complete_task() local
510 ISCSI_DBG_SESSION(conn->session, in iscsi_complete_task()
521 spin_lock_bh(&conn->taskqueuelock); in iscsi_complete_task()
526 spin_unlock_bh(&conn->taskqueuelock); in iscsi_complete_task()
528 if (conn->task == task) in iscsi_complete_task()
529 conn->task = NULL; in iscsi_complete_task()
531 if (READ_ONCE(conn->ping_task) == task) in iscsi_complete_task()
532 WRITE_ONCE(conn->ping_task, NULL); in iscsi_complete_task()
552 struct iscsi_conn *conn = task->conn; in iscsi_complete_scsi_task() local
554 ISCSI_DBG_SESSION(conn->session, "[itt 0x%x]\n", task->itt); in iscsi_complete_scsi_task()
556 conn->last_recv = jiffies; in iscsi_complete_scsi_task()
557 __iscsi_update_cmdsn(conn->session, exp_cmdsn, max_cmdsn); in iscsi_complete_scsi_task()
570 struct iscsi_conn *conn = task->conn; in fail_scsi_task() local
588 conn->session->queued_cmdsn--; in fail_scsi_task()
600 spin_lock_bh(&conn->session->back_lock); in fail_scsi_task()
602 spin_unlock_bh(&conn->session->back_lock); in fail_scsi_task()
605 static int iscsi_prep_mgmt_task(struct iscsi_conn *conn, in iscsi_prep_mgmt_task() argument
608 struct iscsi_session *session = conn->session; in iscsi_prep_mgmt_task()
613 if (conn->session->state == ISCSI_STATE_LOGGING_OUT) in iscsi_prep_mgmt_task()
617 nop->exp_statsn = cpu_to_be32(conn->exp_statsn); in iscsi_prep_mgmt_task()
631 if (conn->c_stage == ISCSI_CONN_STARTED && in iscsi_prep_mgmt_task()
652 __iscsi_conn_send_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr, in __iscsi_conn_send_pdu() argument
655 struct iscsi_session *session = conn->session; in __iscsi_conn_send_pdu()
671 if (conn->login_task->state != ISCSI_TASK_FREE) { in __iscsi_conn_send_pdu()
672 iscsi_conn_printk(KERN_ERR, conn, "Login/Text in " in __iscsi_conn_send_pdu()
678 …iscsi_conn_printk(KERN_ERR, conn, "Invalid buffer len of %u for login task. Max len is %u\n", data… in __iscsi_conn_send_pdu()
682 task = conn->login_task; in __iscsi_conn_send_pdu()
688 …iscsi_conn_printk(KERN_ERR, conn, "Can not send data buffer of len %u for op 0x%x\n", data_size, o… in __iscsi_conn_send_pdu()
692 BUG_ON(conn->c_stage == ISCSI_CONN_INITIAL_STAGE); in __iscsi_conn_send_pdu()
693 BUG_ON(conn->c_stage == ISCSI_CONN_STOPPED); in __iscsi_conn_send_pdu()
705 task->conn = conn; in __iscsi_conn_send_pdu()
716 if (conn->session->tt->alloc_pdu) { in __iscsi_conn_send_pdu()
717 if (conn->session->tt->alloc_pdu(task, hdr->opcode)) { in __iscsi_conn_send_pdu()
718 iscsi_conn_printk(KERN_ERR, conn, "Could not allocate " in __iscsi_conn_send_pdu()
733 task->conn->session->age); in __iscsi_conn_send_pdu()
736 if (unlikely(READ_ONCE(conn->ping_task) == INVALID_SCSI_TASK)) in __iscsi_conn_send_pdu()
737 WRITE_ONCE(conn->ping_task, task); in __iscsi_conn_send_pdu()
740 if (iscsi_prep_mgmt_task(conn, task)) in __iscsi_conn_send_pdu()
746 spin_lock_bh(&conn->taskqueuelock); in __iscsi_conn_send_pdu()
747 list_add_tail(&task->running, &conn->mgmtqueue); in __iscsi_conn_send_pdu()
748 spin_unlock_bh(&conn->taskqueuelock); in __iscsi_conn_send_pdu()
749 iscsi_conn_queue_work(conn); in __iscsi_conn_send_pdu()
765 struct iscsi_conn *conn = cls_conn->dd_data; in iscsi_conn_send_pdu() local
766 struct iscsi_session *session = conn->session; in iscsi_conn_send_pdu()
770 if (!__iscsi_conn_send_pdu(conn, hdr, data, data_size)) in iscsi_conn_send_pdu()
788 static void iscsi_scsi_cmd_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr, in iscsi_scsi_cmd_rsp() argument
793 struct iscsi_session *session = conn->session; in iscsi_scsi_cmd_rsp()
797 conn->exp_statsn = be32_to_cpu(rhdr->statsn) + 1; in iscsi_scsi_cmd_rsp()
835 iscsi_conn_printk(KERN_ERR, conn, in iscsi_scsi_cmd_rsp()
873 conn->scsirsp_pdus_cnt++; in iscsi_scsi_cmd_rsp()
887 iscsi_data_in_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr, in iscsi_data_in_rsp() argument
896 iscsi_update_cmdsn(conn->session, (struct iscsi_nopin *)hdr); in iscsi_data_in_rsp()
898 conn->exp_statsn = be32_to_cpu(rhdr->statsn) + 1; in iscsi_data_in_rsp()
911 ISCSI_DBG_SESSION(conn->session, "data in with status done " in iscsi_data_in_rsp()
914 conn->scsirsp_pdus_cnt++; in iscsi_data_in_rsp()
918 static void iscsi_tmf_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr) in iscsi_tmf_rsp() argument
921 struct iscsi_session *session = conn->session; in iscsi_tmf_rsp()
923 conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1; in iscsi_tmf_rsp()
924 conn->tmfrsp_pdus_cnt++; in iscsi_tmf_rsp()
938 static int iscsi_send_nopout(struct iscsi_conn *conn, struct iscsi_nopin *rhdr) in iscsi_send_nopout() argument
944 if (READ_ONCE(conn->ping_task)) in iscsi_send_nopout()
946 WRITE_ONCE(conn->ping_task, INVALID_SCSI_TASK); in iscsi_send_nopout()
960 task = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)&hdr, NULL, 0); in iscsi_send_nopout()
963 WRITE_ONCE(conn->ping_task, NULL); in iscsi_send_nopout()
964 iscsi_conn_printk(KERN_ERR, conn, "Could not send nopout\n"); in iscsi_send_nopout()
968 conn->last_ping = jiffies; in iscsi_send_nopout()
987 struct iscsi_conn *conn = task->conn; in iscsi_nop_out_rsp() local
990 if (READ_ONCE(conn->ping_task) != task) { in iscsi_nop_out_rsp()
995 if (iscsi_recv_pdu(conn->cls_conn, (struct iscsi_hdr *)nop, in iscsi_nop_out_rsp()
999 mod_timer(&conn->transport_timer, jiffies + conn->recv_timeout); in iscsi_nop_out_rsp()
1004 static int iscsi_handle_reject(struct iscsi_conn *conn, struct iscsi_hdr *hdr, in iscsi_handle_reject() argument
1011 conn->exp_statsn = be32_to_cpu(reject->statsn) + 1; in iscsi_handle_reject()
1015 iscsi_conn_printk(KERN_ERR, conn, "Cannot handle rejected " in iscsi_handle_reject()
1026 iscsi_conn_printk(KERN_ERR, conn, in iscsi_handle_reject()
1032 iscsi_conn_printk(KERN_ERR, conn, in iscsi_handle_reject()
1053 spin_unlock(&conn->session->back_lock); in iscsi_handle_reject()
1054 spin_lock(&conn->session->frwd_lock); in iscsi_handle_reject()
1055 iscsi_send_nopout(conn, in iscsi_handle_reject()
1057 spin_unlock(&conn->session->frwd_lock); in iscsi_handle_reject()
1058 spin_lock(&conn->session->back_lock); in iscsi_handle_reject()
1065 task = iscsi_itt_to_task(conn, rejected_pdu.itt); in iscsi_handle_reject()
1067 iscsi_conn_printk(KERN_ERR, conn, in iscsi_handle_reject()
1078 iscsi_conn_printk(KERN_ERR, conn, in iscsi_handle_reject()
1097 struct iscsi_task *iscsi_itt_to_task(struct iscsi_conn *conn, itt_t itt) in iscsi_itt_to_task() argument
1099 struct iscsi_session *session = conn->session; in iscsi_itt_to_task()
1106 session->tt->parse_pdu_itt(conn, itt, &i, NULL); in iscsi_itt_to_task()
1127 int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr, in __iscsi_complete_pdu() argument
1130 struct iscsi_session *session = conn->session; in __iscsi_complete_pdu()
1135 conn->last_recv = jiffies; in __iscsi_complete_pdu()
1136 rc = iscsi_verify_itt(conn, hdr->itt); in __iscsi_complete_pdu()
1146 opcode, conn->id, itt, datalen); in __iscsi_complete_pdu()
1164 iscsi_send_nopout(conn, (struct iscsi_nopin*)hdr); in __iscsi_complete_pdu()
1169 rc = iscsi_handle_reject(conn, hdr, data, datalen); in __iscsi_complete_pdu()
1172 conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1; in __iscsi_complete_pdu()
1173 if (iscsi_recv_pdu(conn->cls_conn, hdr, data, datalen)) in __iscsi_complete_pdu()
1186 task = iscsi_itt_to_ctask(conn, hdr->itt); in __iscsi_complete_pdu()
1201 task = iscsi_itt_to_task(conn, hdr->itt); in __iscsi_complete_pdu()
1211 iscsi_scsi_cmd_rsp(conn, hdr, task, data, datalen); in __iscsi_complete_pdu()
1214 iscsi_data_in_rsp(conn, hdr, task); in __iscsi_complete_pdu()
1222 conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1; in __iscsi_complete_pdu()
1239 iscsi_tmf_rsp(conn, hdr); in __iscsi_complete_pdu()
1248 conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1; in __iscsi_complete_pdu()
1261 if (iscsi_recv_pdu(conn->cls_conn, hdr, data, datalen)) in __iscsi_complete_pdu()
1268 int iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr, in iscsi_complete_pdu() argument
1273 spin_lock(&conn->session->back_lock); in iscsi_complete_pdu()
1274 rc = __iscsi_complete_pdu(conn, hdr, data, datalen); in iscsi_complete_pdu()
1275 spin_unlock(&conn->session->back_lock); in iscsi_complete_pdu()
1280 int iscsi_verify_itt(struct iscsi_conn *conn, itt_t itt) in iscsi_verify_itt() argument
1282 struct iscsi_session *session = conn->session; in iscsi_verify_itt()
1289 session->tt->parse_pdu_itt(conn, itt, &i, &age); in iscsi_verify_itt()
1296 iscsi_conn_printk(KERN_ERR, conn, in iscsi_verify_itt()
1303 iscsi_conn_printk(KERN_ERR, conn, in iscsi_verify_itt()
1321 struct iscsi_task *iscsi_itt_to_ctask(struct iscsi_conn *conn, itt_t itt) in iscsi_itt_to_ctask() argument
1325 if (iscsi_verify_itt(conn, itt)) in iscsi_itt_to_ctask()
1328 task = iscsi_itt_to_task(conn, itt); in iscsi_itt_to_ctask()
1332 if (task->sc->SCp.phase != conn->session->age) { in iscsi_itt_to_ctask()
1333 iscsi_session_printk(KERN_ERR, conn->session, in iscsi_itt_to_ctask()
1335 task->sc->SCp.phase, conn->session->age); in iscsi_itt_to_ctask()
1346 struct iscsi_conn *conn; in iscsi_session_failure() local
1349 conn = session->leadconn; in iscsi_session_failure()
1350 if (session->state == ISCSI_STATE_TERMINATE || !conn) { in iscsi_session_failure()
1355 iscsi_get_conn(conn->cls_conn); in iscsi_session_failure()
1363 iscsi_conn_error_event(conn->cls_conn, err); in iscsi_session_failure()
1365 iscsi_conn_failure(conn, err); in iscsi_session_failure()
1366 iscsi_put_conn(conn->cls_conn); in iscsi_session_failure()
1370 static bool iscsi_set_conn_failed(struct iscsi_conn *conn) in iscsi_set_conn_failed() argument
1372 struct iscsi_session *session = conn->session; in iscsi_set_conn_failed()
1377 if (conn->stop_stage == 0) in iscsi_set_conn_failed()
1380 set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx); in iscsi_set_conn_failed()
1381 set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx); in iscsi_set_conn_failed()
1385 void iscsi_conn_failure(struct iscsi_conn *conn, enum iscsi_err err) in iscsi_conn_failure() argument
1387 struct iscsi_session *session = conn->session; in iscsi_conn_failure()
1391 needs_evt = iscsi_set_conn_failed(conn); in iscsi_conn_failure()
1395 iscsi_conn_error_event(conn->cls_conn, err); in iscsi_conn_failure()
1399 static int iscsi_check_cmdsn_window_closed(struct iscsi_conn *conn) in iscsi_check_cmdsn_window_closed() argument
1401 struct iscsi_session *session = conn->session; in iscsi_check_cmdsn_window_closed()
1416 static int iscsi_xmit_task(struct iscsi_conn *conn) in iscsi_xmit_task() argument
1418 struct iscsi_task *task = conn->task; in iscsi_xmit_task()
1421 if (test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx)) in iscsi_xmit_task()
1424 spin_lock_bh(&conn->session->back_lock); in iscsi_xmit_task()
1425 if (conn->task == NULL) { in iscsi_xmit_task()
1426 spin_unlock_bh(&conn->session->back_lock); in iscsi_xmit_task()
1430 spin_unlock_bh(&conn->session->back_lock); in iscsi_xmit_task()
1431 spin_unlock_bh(&conn->session->frwd_lock); in iscsi_xmit_task()
1432 rc = conn->session->tt->xmit_task(task); in iscsi_xmit_task()
1433 spin_lock_bh(&conn->session->frwd_lock); in iscsi_xmit_task()
1437 conn->task = NULL; in iscsi_xmit_task()
1440 spin_lock(&conn->session->back_lock); in iscsi_xmit_task()
1442 spin_unlock(&conn->session->back_lock); in iscsi_xmit_task()
1456 struct iscsi_conn *conn = task->conn; in iscsi_requeue_task() local
1462 spin_lock_bh(&conn->taskqueuelock); in iscsi_requeue_task()
1464 list_add_tail(&task->running, &conn->requeue); in iscsi_requeue_task()
1465 spin_unlock_bh(&conn->taskqueuelock); in iscsi_requeue_task()
1466 iscsi_conn_queue_work(conn); in iscsi_requeue_task()
1479 static int iscsi_data_xmit(struct iscsi_conn *conn) in iscsi_data_xmit() argument
1484 spin_lock_bh(&conn->session->frwd_lock); in iscsi_data_xmit()
1485 if (test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx)) { in iscsi_data_xmit()
1486 ISCSI_DBG_SESSION(conn->session, "Tx suspended!\n"); in iscsi_data_xmit()
1487 spin_unlock_bh(&conn->session->frwd_lock); in iscsi_data_xmit()
1491 if (conn->task) { in iscsi_data_xmit()
1492 rc = iscsi_xmit_task(conn); in iscsi_data_xmit()
1502 spin_lock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1504 while (!list_empty(&conn->mgmtqueue)) { in iscsi_data_xmit()
1505 conn->task = list_entry(conn->mgmtqueue.next, in iscsi_data_xmit()
1507 list_del_init(&conn->task->running); in iscsi_data_xmit()
1508 spin_unlock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1509 if (iscsi_prep_mgmt_task(conn, conn->task)) { in iscsi_data_xmit()
1511 spin_lock_bh(&conn->session->back_lock); in iscsi_data_xmit()
1512 __iscsi_put_task(conn->task); in iscsi_data_xmit()
1513 spin_unlock_bh(&conn->session->back_lock); in iscsi_data_xmit()
1514 conn->task = NULL; in iscsi_data_xmit()
1515 spin_lock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1518 rc = iscsi_xmit_task(conn); in iscsi_data_xmit()
1521 spin_lock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1525 while (!list_empty(&conn->cmdqueue)) { in iscsi_data_xmit()
1526 conn->task = list_entry(conn->cmdqueue.next, struct iscsi_task, in iscsi_data_xmit()
1528 list_del_init(&conn->task->running); in iscsi_data_xmit()
1529 spin_unlock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1530 if (conn->session->state == ISCSI_STATE_LOGGING_OUT) { in iscsi_data_xmit()
1531 fail_scsi_task(conn->task, DID_IMM_RETRY); in iscsi_data_xmit()
1532 spin_lock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1535 rc = iscsi_prep_scsi_cmd_pdu(conn->task); in iscsi_data_xmit()
1538 fail_scsi_task(conn->task, DID_IMM_RETRY); in iscsi_data_xmit()
1540 fail_scsi_task(conn->task, DID_ABORT); in iscsi_data_xmit()
1541 spin_lock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1544 rc = iscsi_xmit_task(conn); in iscsi_data_xmit()
1552 spin_lock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1553 if (!list_empty(&conn->mgmtqueue)) in iscsi_data_xmit()
1557 while (!list_empty(&conn->requeue)) { in iscsi_data_xmit()
1561 if (conn->session->state == ISCSI_STATE_LOGGING_OUT) in iscsi_data_xmit()
1564 task = list_entry(conn->requeue.next, struct iscsi_task, in iscsi_data_xmit()
1569 conn->task = task; in iscsi_data_xmit()
1570 list_del_init(&conn->task->running); in iscsi_data_xmit()
1571 conn->task->state = ISCSI_TASK_RUNNING; in iscsi_data_xmit()
1572 spin_unlock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1573 rc = iscsi_xmit_task(conn); in iscsi_data_xmit()
1576 spin_lock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1577 if (!list_empty(&conn->mgmtqueue)) in iscsi_data_xmit()
1580 spin_unlock_bh(&conn->taskqueuelock); in iscsi_data_xmit()
1581 spin_unlock_bh(&conn->session->frwd_lock); in iscsi_data_xmit()
1585 spin_unlock_bh(&conn->session->frwd_lock); in iscsi_data_xmit()
1591 struct iscsi_conn *conn = in iscsi_xmitworker() local
1598 rc = iscsi_data_xmit(conn); in iscsi_xmitworker()
1602 static inline struct iscsi_task *iscsi_alloc_task(struct iscsi_conn *conn, in iscsi_alloc_task() argument
1607 if (!kfifo_out(&conn->session->cmdpool.queue, in iscsi_alloc_task()
1611 sc->SCp.phase = conn->session->age; in iscsi_alloc_task()
1616 task->conn = conn; in iscsi_alloc_task()
1645 struct iscsi_conn *conn; in iscsi_queuecommand() local
1705 conn = session->leadconn; in iscsi_queuecommand()
1706 if (!conn) { in iscsi_queuecommand()
1712 if (test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx)) { in iscsi_queuecommand()
1718 if (iscsi_check_cmdsn_window_closed(conn)) { in iscsi_queuecommand()
1723 task = iscsi_alloc_task(conn, sc); in iscsi_queuecommand()
1746 spin_lock_bh(&conn->taskqueuelock); in iscsi_queuecommand()
1747 list_add_tail(&task->running, &conn->cmdqueue); in iscsi_queuecommand()
1748 spin_unlock_bh(&conn->taskqueuelock); in iscsi_queuecommand()
1749 iscsi_conn_queue_work(conn); in iscsi_queuecommand()
1804 static int iscsi_exec_task_mgmt_fn(struct iscsi_conn *conn, in iscsi_exec_task_mgmt_fn() argument
1809 struct iscsi_session *session = conn->session; in iscsi_exec_task_mgmt_fn()
1812 task = __iscsi_conn_send_pdu(conn, (struct iscsi_hdr *)hdr, in iscsi_exec_task_mgmt_fn()
1816 iscsi_conn_printk(KERN_ERR, conn, "Could not send TMF.\n"); in iscsi_exec_task_mgmt_fn()
1817 iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED); in iscsi_exec_task_mgmt_fn()
1821 conn->tmfcmd_pdus_cnt++; in iscsi_exec_task_mgmt_fn()
1857 static void fail_scsi_tasks(struct iscsi_conn *conn, u64 lun, int error) in fail_scsi_tasks() argument
1862 for (i = 0; i < conn->session->cmds_max; i++) { in fail_scsi_tasks()
1863 task = conn->session->cmds[i]; in fail_scsi_tasks()
1870 ISCSI_DBG_SESSION(conn->session, in fail_scsi_tasks()
1888 void iscsi_suspend_queue(struct iscsi_conn *conn) in iscsi_suspend_queue() argument
1890 spin_lock_bh(&conn->session->frwd_lock); in iscsi_suspend_queue()
1891 set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx); in iscsi_suspend_queue()
1892 spin_unlock_bh(&conn->session->frwd_lock); in iscsi_suspend_queue()
1904 void iscsi_suspend_tx(struct iscsi_conn *conn) in iscsi_suspend_tx() argument
1906 struct Scsi_Host *shost = conn->session->host; in iscsi_suspend_tx()
1909 set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx); in iscsi_suspend_tx()
1915 static void iscsi_start_tx(struct iscsi_conn *conn) in iscsi_start_tx() argument
1917 clear_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx); in iscsi_start_tx()
1918 iscsi_conn_queue_work(conn); in iscsi_start_tx()
1927 static int iscsi_has_ping_timed_out(struct iscsi_conn *conn) in iscsi_has_ping_timed_out() argument
1929 if (READ_ONCE(conn->ping_task) && in iscsi_has_ping_timed_out()
1930 time_before_eq(conn->last_recv + (conn->recv_timeout * HZ) + in iscsi_has_ping_timed_out()
1931 (conn->ping_timeout * HZ), jiffies)) in iscsi_has_ping_timed_out()
1943 struct iscsi_conn *conn; in iscsi_eh_cmd_timed_out() local
1984 conn = session->leadconn; in iscsi_eh_cmd_timed_out()
1985 if (!conn) { in iscsi_eh_cmd_timed_out()
2008 if (!conn->recv_timeout && !conn->ping_timeout) in iscsi_eh_cmd_timed_out()
2014 if (iscsi_has_ping_timed_out(conn)) { in iscsi_eh_cmd_timed_out()
2019 for (i = 0; i < conn->session->cmds_max; i++) { in iscsi_eh_cmd_timed_out()
2020 running_task = conn->session->cmds[i]; in iscsi_eh_cmd_timed_out()
2064 if (READ_ONCE(conn->ping_task)) { in iscsi_eh_cmd_timed_out()
2071 iscsi_send_nopout(conn, NULL); in iscsi_eh_cmd_timed_out()
2087 struct iscsi_conn *conn = from_timer(conn, t, transport_timer); in iscsi_check_transport_timeouts() local
2088 struct iscsi_session *session = conn->session; in iscsi_check_transport_timeouts()
2095 recv_timeout = conn->recv_timeout; in iscsi_check_transport_timeouts()
2100 last_recv = conn->last_recv; in iscsi_check_transport_timeouts()
2102 if (iscsi_has_ping_timed_out(conn)) { in iscsi_check_transport_timeouts()
2103 iscsi_conn_printk(KERN_ERR, conn, "ping timeout of %d secs " in iscsi_check_transport_timeouts()
2106 conn->ping_timeout, conn->recv_timeout, in iscsi_check_transport_timeouts()
2107 last_recv, conn->last_ping, jiffies); in iscsi_check_transport_timeouts()
2109 iscsi_conn_failure(conn, ISCSI_ERR_NOP_TIMEDOUT); in iscsi_check_transport_timeouts()
2115 ISCSI_DBG_CONN(conn, "Sending nopout as ping\n"); in iscsi_check_transport_timeouts()
2116 if (iscsi_send_nopout(conn, NULL)) in iscsi_check_transport_timeouts()
2119 next_timeout = conn->last_ping + (conn->ping_timeout * HZ); in iscsi_check_transport_timeouts()
2123 ISCSI_DBG_CONN(conn, "Setting next tmo %lu\n", next_timeout); in iscsi_check_transport_timeouts()
2124 mod_timer(&conn->transport_timer, next_timeout); in iscsi_check_transport_timeouts()
2141 struct iscsi_conn *conn; in iscsi_conn_unbind() local
2146 conn = cls_conn->dd_data; in iscsi_conn_unbind()
2147 session = conn->session; in iscsi_conn_unbind()
2156 iscsi_suspend_queue(conn); in iscsi_conn_unbind()
2157 iscsi_suspend_tx(conn); in iscsi_conn_unbind()
2167 iscsi_set_conn_failed(conn); in iscsi_conn_unbind()
2190 struct iscsi_conn *conn; in iscsi_eh_abort() local
2227 conn = session->leadconn; in iscsi_eh_abort()
2228 conn->eh_abort_cnt++; in iscsi_eh_abort()
2254 if (iscsi_exec_task_mgmt_fn(conn, hdr, age, session->abort_timeout)) in iscsi_eh_abort()
2264 iscsi_suspend_tx(conn); in iscsi_eh_abort()
2275 iscsi_start_tx(conn); in iscsi_eh_abort()
2279 iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); in iscsi_eh_abort()
2328 struct iscsi_conn *conn; in iscsi_eh_device_reset() local
2346 conn = session->leadconn; in iscsi_eh_device_reset()
2356 if (iscsi_exec_task_mgmt_fn(conn, hdr, session->age, in iscsi_eh_device_reset()
2367 iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); in iscsi_eh_device_reset()
2377 iscsi_suspend_tx(conn); in iscsi_eh_device_reset()
2381 fail_scsi_tasks(conn, sc->device->lun, DID_ERROR); in iscsi_eh_device_reset()
2385 iscsi_start_tx(conn); in iscsi_eh_device_reset()
2422 struct iscsi_conn *conn; in iscsi_eh_session_reset() local
2426 conn = session->leadconn; in iscsi_eh_session_reset()
2447 iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); in iscsi_eh_session_reset()
2462 session->targetname, conn->persistent_address); in iscsi_eh_session_reset()
2490 struct iscsi_conn *conn; in iscsi_eh_target_reset() local
2508 conn = session->leadconn; in iscsi_eh_target_reset()
2518 if (iscsi_exec_task_mgmt_fn(conn, hdr, session->age, in iscsi_eh_target_reset()
2529 iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); in iscsi_eh_target_reset()
2539 iscsi_suspend_tx(conn); in iscsi_eh_target_reset()
2543 fail_scsi_tasks(conn, -1, DID_ERROR); in iscsi_eh_target_reset()
2547 iscsi_start_tx(conn); in iscsi_eh_target_reset()
2941 struct iscsi_conn *conn; in iscsi_conn_setup() local
2945 cls_conn = iscsi_create_conn(cls_session, sizeof(*conn) + dd_size, in iscsi_conn_setup()
2949 conn = cls_conn->dd_data; in iscsi_conn_setup()
2950 memset(conn, 0, sizeof(*conn) + dd_size); in iscsi_conn_setup()
2952 conn->dd_data = cls_conn->dd_data + sizeof(*conn); in iscsi_conn_setup()
2953 conn->session = session; in iscsi_conn_setup()
2954 conn->cls_conn = cls_conn; in iscsi_conn_setup()
2955 conn->c_stage = ISCSI_CONN_INITIAL_STAGE; in iscsi_conn_setup()
2956 conn->id = conn_idx; in iscsi_conn_setup()
2957 conn->exp_statsn = 0; in iscsi_conn_setup()
2959 timer_setup(&conn->transport_timer, iscsi_check_transport_timeouts, 0); in iscsi_conn_setup()
2961 INIT_LIST_HEAD(&conn->mgmtqueue); in iscsi_conn_setup()
2962 INIT_LIST_HEAD(&conn->cmdqueue); in iscsi_conn_setup()
2963 INIT_LIST_HEAD(&conn->requeue); in iscsi_conn_setup()
2964 spin_lock_init(&conn->taskqueuelock); in iscsi_conn_setup()
2965 INIT_WORK(&conn->xmitwork, iscsi_xmitworker); in iscsi_conn_setup()
2970 (void*)&conn->login_task, in iscsi_conn_setup()
2981 conn->login_task->data = conn->data = data; in iscsi_conn_setup()
2988 kfifo_in(&session->cmdpool.queue, (void*)&conn->login_task, in iscsi_conn_setup()
3005 struct iscsi_conn *conn = cls_conn->dd_data; in iscsi_conn_teardown() local
3006 struct iscsi_session *session = conn->session; in iscsi_conn_teardown()
3007 char *tmp_persistent_address = conn->persistent_address; in iscsi_conn_teardown()
3008 char *tmp_local_ipaddr = conn->local_ipaddr; in iscsi_conn_teardown()
3010 del_timer_sync(&conn->transport_timer); in iscsi_conn_teardown()
3014 conn->c_stage = ISCSI_CONN_CLEANUP_WAIT; in iscsi_conn_teardown()
3015 if (session->leadconn == conn) { in iscsi_conn_teardown()
3025 iscsi_suspend_tx(conn); in iscsi_conn_teardown()
3028 free_pages((unsigned long) conn->data, in iscsi_conn_teardown()
3032 kfifo_in(&session->cmdpool.queue, (void*)&conn->login_task, in iscsi_conn_teardown()
3035 if (session->leadconn == conn) in iscsi_conn_teardown()
3048 struct iscsi_conn *conn = cls_conn->dd_data; in iscsi_conn_start() local
3049 struct iscsi_session *session = conn->session; in iscsi_conn_start()
3052 iscsi_conn_printk(KERN_ERR, conn, in iscsi_conn_start()
3059 iscsi_conn_printk(KERN_INFO, conn, "invalid burst lengths: " in iscsi_conn_start()
3065 if (conn->ping_timeout && !conn->recv_timeout) { in iscsi_conn_start()
3066 iscsi_conn_printk(KERN_ERR, conn, "invalid recv timeout of " in iscsi_conn_start()
3068 conn->recv_timeout = 5; in iscsi_conn_start()
3071 if (conn->recv_timeout && !conn->ping_timeout) { in iscsi_conn_start()
3072 iscsi_conn_printk(KERN_ERR, conn, "invalid ping timeout of " in iscsi_conn_start()
3074 conn->ping_timeout = 5; in iscsi_conn_start()
3078 conn->c_stage = ISCSI_CONN_STARTED; in iscsi_conn_start()
3082 conn->last_recv = jiffies; in iscsi_conn_start()
3083 conn->last_ping = jiffies; in iscsi_conn_start()
3084 if (conn->recv_timeout && conn->ping_timeout) in iscsi_conn_start()
3085 mod_timer(&conn->transport_timer, in iscsi_conn_start()
3086 jiffies + (conn->recv_timeout * HZ)); in iscsi_conn_start()
3088 switch(conn->stop_stage) { in iscsi_conn_start()
3094 conn->stop_stage = 0; in iscsi_conn_start()
3101 conn->stop_stage = 0; in iscsi_conn_start()
3115 fail_mgmt_tasks(struct iscsi_session *session, struct iscsi_conn *conn) in fail_mgmt_tasks() argument
3120 for (i = 0; i < conn->session->cmds_max; i++) { in fail_mgmt_tasks()
3121 task = conn->session->cmds[i]; in fail_mgmt_tasks()
3128 ISCSI_DBG_SESSION(conn->session, in fail_mgmt_tasks()
3142 struct iscsi_conn *conn = cls_conn->dd_data; in iscsi_conn_stop() local
3143 struct iscsi_session *session = conn->session; in iscsi_conn_stop()
3148 if (conn->stop_stage == STOP_CONN_TERM) { in iscsi_conn_stop()
3161 else if (conn->stop_stage != STOP_CONN_RECOVER) in iscsi_conn_stop()
3164 old_stop_stage = conn->stop_stage; in iscsi_conn_stop()
3165 conn->stop_stage = flag; in iscsi_conn_stop()
3168 del_timer_sync(&conn->transport_timer); in iscsi_conn_stop()
3169 iscsi_suspend_tx(conn); in iscsi_conn_stop()
3172 conn->c_stage = ISCSI_CONN_STOPPED; in iscsi_conn_stop()
3182 conn->hdrdgst_en = 0; in iscsi_conn_stop()
3183 conn->datadgst_en = 0; in iscsi_conn_stop()
3195 fail_scsi_tasks(conn, -1, DID_TRANSPORT_DISRUPTED); in iscsi_conn_stop()
3196 fail_mgmt_tasks(session, conn); in iscsi_conn_stop()
3207 struct iscsi_conn *conn = cls_conn->dd_data; in iscsi_conn_bind() local
3211 session->leadconn = conn; in iscsi_conn_bind()
3217 clear_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx); in iscsi_conn_bind()
3218 clear_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx); in iscsi_conn_bind()
3245 struct iscsi_conn *conn = cls_conn->dd_data; in iscsi_set_param() local
3246 struct iscsi_session *session = conn->session; in iscsi_set_param()
3263 sscanf(buf, "%d", &conn->ping_timeout); in iscsi_set_param()
3266 sscanf(buf, "%d", &conn->recv_timeout); in iscsi_set_param()
3269 sscanf(buf, "%d", &conn->max_recv_dlength); in iscsi_set_param()
3272 sscanf(buf, "%d", &conn->max_xmit_dlength); in iscsi_set_param()
3275 sscanf(buf, "%d", &conn->hdrdgst_en); in iscsi_set_param()
3278 sscanf(buf, "%d", &conn->datadgst_en); in iscsi_set_param()
3305 sscanf(buf, "%u", &conn->exp_statsn); in iscsi_set_param()
3323 sscanf(buf, "%d", &conn->persistent_port); in iscsi_set_param()
3326 return iscsi_switch_str_param(&conn->persistent_address, buf); in iscsi_set_param()
3347 return iscsi_switch_str_param(&conn->local_ipaddr, buf); in iscsi_set_param()
3537 struct iscsi_conn *conn = cls_conn->dd_data; in iscsi_conn_get_param() local
3542 len = sysfs_emit(buf, "%u\n", conn->ping_timeout); in iscsi_conn_get_param()
3545 len = sysfs_emit(buf, "%u\n", conn->recv_timeout); in iscsi_conn_get_param()
3548 len = sysfs_emit(buf, "%u\n", conn->max_recv_dlength); in iscsi_conn_get_param()
3551 len = sysfs_emit(buf, "%u\n", conn->max_xmit_dlength); in iscsi_conn_get_param()
3554 len = sysfs_emit(buf, "%d\n", conn->hdrdgst_en); in iscsi_conn_get_param()
3557 len = sysfs_emit(buf, "%d\n", conn->datadgst_en); in iscsi_conn_get_param()
3560 len = sysfs_emit(buf, "%d\n", conn->ifmarker_en); in iscsi_conn_get_param()
3563 len = sysfs_emit(buf, "%d\n", conn->ofmarker_en); in iscsi_conn_get_param()
3566 len = sysfs_emit(buf, "%u\n", conn->exp_statsn); in iscsi_conn_get_param()
3569 len = sysfs_emit(buf, "%d\n", conn->persistent_port); in iscsi_conn_get_param()
3572 len = sysfs_emit(buf, "%s\n", conn->persistent_address); in iscsi_conn_get_param()
3575 len = sysfs_emit(buf, "%u\n", conn->statsn); in iscsi_conn_get_param()
3578 len = sysfs_emit(buf, "%u\n", conn->max_segment_size); in iscsi_conn_get_param()
3581 len = sysfs_emit(buf, "%u\n", conn->keepalive_tmo); in iscsi_conn_get_param()
3584 len = sysfs_emit(buf, "%u\n", conn->local_port); in iscsi_conn_get_param()
3587 len = sysfs_emit(buf, "%u\n", conn->tcp_timestamp_stat); in iscsi_conn_get_param()
3590 len = sysfs_emit(buf, "%u\n", conn->tcp_nagle_disable); in iscsi_conn_get_param()
3593 len = sysfs_emit(buf, "%u\n", conn->tcp_wsf_disable); in iscsi_conn_get_param()
3596 len = sysfs_emit(buf, "%u\n", conn->tcp_timer_scale); in iscsi_conn_get_param()
3599 len = sysfs_emit(buf, "%u\n", conn->tcp_timestamp_en); in iscsi_conn_get_param()
3602 len = sysfs_emit(buf, "%u\n", conn->fragment_disable); in iscsi_conn_get_param()
3605 len = sysfs_emit(buf, "%u\n", conn->ipv4_tos); in iscsi_conn_get_param()
3608 len = sysfs_emit(buf, "%u\n", conn->ipv6_traffic_class); in iscsi_conn_get_param()
3611 len = sysfs_emit(buf, "%u\n", conn->ipv6_flow_label); in iscsi_conn_get_param()
3614 len = sysfs_emit(buf, "%u\n", conn->is_fw_assigned_ipv6); in iscsi_conn_get_param()
3617 len = sysfs_emit(buf, "%u\n", conn->tcp_xmit_wsf); in iscsi_conn_get_param()
3620 len = sysfs_emit(buf, "%u\n", conn->tcp_recv_wsf); in iscsi_conn_get_param()
3623 len = sysfs_emit(buf, "%s\n", conn->local_ipaddr); in iscsi_conn_get_param()