diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index ab39d7f65bbb..dfe906307e55 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -230,11 +230,11 @@ static int iscsi_prep_ecdb_ahs(struct iscsi_task *task) */ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode) { - struct iscsi_conn *conn = task->conn; - struct iscsi_tm *tmf = &conn->tmhdr; + struct iscsi_session *session = task->conn->session; + struct iscsi_tm *tmf = &session->tmhdr; u64 hdr_lun; - if (conn->tmf_state == TMF_INITIAL) + if (session->tmf_state == TMF_INITIAL) return 0; if ((tmf->opcode & ISCSI_OPCODE_MASK) != ISCSI_OP_SCSI_TMFUNC) @@ -254,24 +254,19 @@ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode) * Fail all SCSI cmd PDUs */ if (opcode != ISCSI_OP_SCSI_DATA_OUT) { - iscsi_conn_printk(KERN_INFO, conn, - "task [op %x itt " - "0x%x/0x%x] " - "rejected.\n", - opcode, task->itt, - task->hdr_itt); + iscsi_session_printk(KERN_INFO, session, + "task [op %x itt 0x%x/0x%x] rejected.\n", + opcode, task->itt, task->hdr_itt); return -EACCES; } /* * And also all data-out PDUs in response to R2T * if fast_abort is set. */ - if (conn->session->fast_abort) { - iscsi_conn_printk(KERN_INFO, conn, - "task [op %x itt " - "0x%x/0x%x] fast abort.\n", - opcode, task->itt, - task->hdr_itt); + if (session->fast_abort) { + iscsi_session_printk(KERN_INFO, session, + "task [op %x itt 0x%x/0x%x] fast abort.\n", + opcode, task->itt, task->hdr_itt); return -EACCES; } break; @@ -284,7 +279,7 @@ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode) */ if (opcode == ISCSI_OP_SCSI_DATA_OUT && task->hdr_itt == tmf->rtt) { - ISCSI_DBG_SESSION(conn->session, + ISCSI_DBG_SESSION(session, "Preventing task %x/%x from sending " "data-out due to abort task in " "progress\n", task->itt, @@ -936,20 +931,21 @@ iscsi_data_in_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr, static void iscsi_tmf_rsp(struct iscsi_conn *conn, struct iscsi_hdr *hdr) { struct iscsi_tm_rsp *tmf = (struct iscsi_tm_rsp *)hdr; + struct iscsi_session *session = conn->session; conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1; conn->tmfrsp_pdus_cnt++; - if (conn->tmf_state != TMF_QUEUED) + if (session->tmf_state != TMF_QUEUED) return; if (tmf->response == ISCSI_TMF_RSP_COMPLETE) - conn->tmf_state = TMF_SUCCESS; + session->tmf_state = TMF_SUCCESS; else if (tmf->response == ISCSI_TMF_RSP_NO_TASK) - conn->tmf_state = TMF_NOT_FOUND; + session->tmf_state = TMF_NOT_FOUND; else - conn->tmf_state = TMF_FAILED; - wake_up(&conn->ehwait); + session->tmf_state = TMF_FAILED; + wake_up(&session->ehwait); } static int iscsi_send_nopout(struct iscsi_conn *conn, struct iscsi_nopin *rhdr) @@ -1826,15 +1822,14 @@ EXPORT_SYMBOL_GPL(iscsi_target_alloc); static void iscsi_tmf_timedout(struct timer_list *t) { - struct iscsi_conn *conn = from_timer(conn, t, tmf_timer); - struct iscsi_session *session = conn->session; + struct iscsi_session *session = from_timer(session, t, tmf_timer); spin_lock(&session->frwd_lock); - if (conn->tmf_state == TMF_QUEUED) { - conn->tmf_state = TMF_TIMEDOUT; + if (session->tmf_state == TMF_QUEUED) { + session->tmf_state = TMF_TIMEDOUT; ISCSI_DBG_EH(session, "tmf timedout\n"); /* unblock eh_abort() */ - wake_up(&conn->ehwait); + wake_up(&session->ehwait); } spin_unlock(&session->frwd_lock); } @@ -1857,8 +1852,8 @@ static int iscsi_exec_task_mgmt_fn(struct iscsi_conn *conn, return -EPERM; } conn->tmfcmd_pdus_cnt++; - conn->tmf_timer.expires = timeout * HZ + jiffies; - add_timer(&conn->tmf_timer); + session->tmf_timer.expires = timeout * HZ + jiffies; + add_timer(&session->tmf_timer); ISCSI_DBG_EH(session, "tmf set timeout\n"); spin_unlock_bh(&session->frwd_lock); @@ -1872,12 +1867,12 @@ static int iscsi_exec_task_mgmt_fn(struct iscsi_conn *conn, * 3) session is terminated or restarted or userspace has * given up on recovery */ - wait_event_interruptible(conn->ehwait, age != session->age || + wait_event_interruptible(session->ehwait, age != session->age || session->state != ISCSI_STATE_LOGGED_IN || - conn->tmf_state != TMF_QUEUED); + session->tmf_state != TMF_QUEUED); if (signal_pending(current)) flush_signals(current); - del_timer_sync(&conn->tmf_timer); + del_timer_sync(&session->tmf_timer); mutex_lock(&session->eh_mutex); spin_lock_bh(&session->frwd_lock); @@ -2309,17 +2304,17 @@ int iscsi_eh_abort(struct scsi_cmnd *sc) } /* only have one tmf outstanding at a time */ - if (conn->tmf_state != TMF_INITIAL) + if (session->tmf_state != TMF_INITIAL) goto failed; - conn->tmf_state = TMF_QUEUED; + session->tmf_state = TMF_QUEUED; - hdr = &conn->tmhdr; + hdr = &session->tmhdr; iscsi_prep_abort_task_pdu(task, hdr); if (iscsi_exec_task_mgmt_fn(conn, hdr, age, session->abort_timeout)) goto failed; - switch (conn->tmf_state) { + switch (session->tmf_state) { case TMF_SUCCESS: spin_unlock_bh(&session->frwd_lock); /* @@ -2334,7 +2329,7 @@ int iscsi_eh_abort(struct scsi_cmnd *sc) */ spin_lock_bh(&session->frwd_lock); fail_scsi_task(task, DID_ABORT); - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; memset(hdr, 0, sizeof(*hdr)); spin_unlock_bh(&session->frwd_lock); iscsi_start_tx(conn); @@ -2345,7 +2340,7 @@ int iscsi_eh_abort(struct scsi_cmnd *sc) goto failed_unlocked; case TMF_NOT_FOUND: if (!sc->SCp.ptr) { - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; memset(hdr, 0, sizeof(*hdr)); /* task completed before tmf abort response */ ISCSI_DBG_EH(session, "sc completed while abort in " @@ -2354,7 +2349,7 @@ int iscsi_eh_abort(struct scsi_cmnd *sc) } fallthrough; default: - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; goto failed; } @@ -2413,11 +2408,11 @@ int iscsi_eh_device_reset(struct scsi_cmnd *sc) conn = session->leadconn; /* only have one tmf outstanding at a time */ - if (conn->tmf_state != TMF_INITIAL) + if (session->tmf_state != TMF_INITIAL) goto unlock; - conn->tmf_state = TMF_QUEUED; + session->tmf_state = TMF_QUEUED; - hdr = &conn->tmhdr; + hdr = &session->tmhdr; iscsi_prep_lun_reset_pdu(sc, hdr); if (iscsi_exec_task_mgmt_fn(conn, hdr, session->age, @@ -2426,7 +2421,7 @@ int iscsi_eh_device_reset(struct scsi_cmnd *sc) goto unlock; } - switch (conn->tmf_state) { + switch (session->tmf_state) { case TMF_SUCCESS: break; case TMF_TIMEDOUT: @@ -2434,7 +2429,7 @@ int iscsi_eh_device_reset(struct scsi_cmnd *sc) iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); goto done; default: - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; goto unlock; } @@ -2446,7 +2441,7 @@ int iscsi_eh_device_reset(struct scsi_cmnd *sc) spin_lock_bh(&session->frwd_lock); memset(hdr, 0, sizeof(*hdr)); fail_scsi_tasks(conn, sc->device->lun, DID_ERROR); - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; spin_unlock_bh(&session->frwd_lock); iscsi_start_tx(conn); @@ -2469,8 +2464,7 @@ void iscsi_session_recovery_timedout(struct iscsi_cls_session *cls_session) spin_lock_bh(&session->frwd_lock); if (session->state != ISCSI_STATE_LOGGED_IN) { session->state = ISCSI_STATE_RECOVERY_FAILED; - if (session->leadconn) - wake_up(&session->leadconn->ehwait); + wake_up(&session->ehwait); } spin_unlock_bh(&session->frwd_lock); } @@ -2515,7 +2509,7 @@ failed: iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); ISCSI_DBG_EH(session, "wait for relogin\n"); - wait_event_interruptible(conn->ehwait, + wait_event_interruptible(session->ehwait, session->state == ISCSI_STATE_TERMINATE || session->state == ISCSI_STATE_LOGGED_IN || session->state == ISCSI_STATE_RECOVERY_FAILED); @@ -2576,11 +2570,11 @@ static int iscsi_eh_target_reset(struct scsi_cmnd *sc) conn = session->leadconn; /* only have one tmf outstanding at a time */ - if (conn->tmf_state != TMF_INITIAL) + if (session->tmf_state != TMF_INITIAL) goto unlock; - conn->tmf_state = TMF_QUEUED; + session->tmf_state = TMF_QUEUED; - hdr = &conn->tmhdr; + hdr = &session->tmhdr; iscsi_prep_tgt_reset_pdu(sc, hdr); if (iscsi_exec_task_mgmt_fn(conn, hdr, session->age, @@ -2589,7 +2583,7 @@ static int iscsi_eh_target_reset(struct scsi_cmnd *sc) goto unlock; } - switch (conn->tmf_state) { + switch (session->tmf_state) { case TMF_SUCCESS: break; case TMF_TIMEDOUT: @@ -2597,7 +2591,7 @@ static int iscsi_eh_target_reset(struct scsi_cmnd *sc) iscsi_conn_failure(conn, ISCSI_ERR_SCSI_EH_SESSION_RST); goto done; default: - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; goto unlock; } @@ -2609,7 +2603,7 @@ static int iscsi_eh_target_reset(struct scsi_cmnd *sc) spin_lock_bh(&session->frwd_lock); memset(hdr, 0, sizeof(*hdr)); fail_scsi_tasks(conn, -1, DID_ERROR); - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; spin_unlock_bh(&session->frwd_lock); iscsi_start_tx(conn); @@ -2939,7 +2933,10 @@ iscsi_session_setup(struct iscsi_transport *iscsit, struct Scsi_Host *shost, session->tt = iscsit; session->dd_data = cls_session->dd_data + sizeof(*session); + session->tmf_state = TMF_INITIAL; + timer_setup(&session->tmf_timer, iscsi_tmf_timedout, 0); mutex_init(&session->eh_mutex); + spin_lock_init(&session->frwd_lock); spin_lock_init(&session->back_lock); @@ -3043,7 +3040,6 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, int dd_size, conn->c_stage = ISCSI_CONN_INITIAL_STAGE; conn->id = conn_idx; conn->exp_statsn = 0; - conn->tmf_state = TMF_INITIAL; timer_setup(&conn->transport_timer, iscsi_check_transport_timeouts, 0); @@ -3068,8 +3064,7 @@ iscsi_conn_setup(struct iscsi_cls_session *cls_session, int dd_size, goto login_task_data_alloc_fail; conn->login_task->data = conn->data = data; - timer_setup(&conn->tmf_timer, iscsi_tmf_timedout, 0); - init_waitqueue_head(&conn->ehwait); + init_waitqueue_head(&session->ehwait); return cls_conn; @@ -3104,7 +3099,7 @@ void iscsi_conn_teardown(struct iscsi_cls_conn *cls_conn) * leading connection? then give up on recovery. */ session->state = ISCSI_STATE_TERMINATE; - wake_up(&conn->ehwait); + wake_up(&session->ehwait); } spin_unlock_bh(&session->frwd_lock); @@ -3179,7 +3174,7 @@ int iscsi_conn_start(struct iscsi_cls_conn *cls_conn) * commands after successful recovery */ conn->stop_stage = 0; - conn->tmf_state = TMF_INITIAL; + session->tmf_state = TMF_INITIAL; session->age++; if (session->age == 16) session->age = 0; @@ -3193,7 +3188,7 @@ int iscsi_conn_start(struct iscsi_cls_conn *cls_conn) spin_unlock_bh(&session->frwd_lock); iscsi_unblock_session(session->cls_session); - wake_up(&conn->ehwait); + wake_up(&session->ehwait); return 0; } EXPORT_SYMBOL_GPL(iscsi_conn_start); @@ -3287,7 +3282,7 @@ void iscsi_conn_stop(struct iscsi_cls_conn *cls_conn, int flag) spin_lock_bh(&session->frwd_lock); fail_scsi_tasks(conn, -1, DID_TRANSPORT_DISRUPTED); fail_mgmt_tasks(session, conn); - memset(&conn->tmhdr, 0, sizeof(conn->tmhdr)); + memset(&session->tmhdr, 0, sizeof(session->tmhdr)); spin_unlock_bh(&session->frwd_lock); mutex_unlock(&session->eh_mutex); } diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 091f284bd6e9..2bb452a8f134 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -195,12 +195,6 @@ struct iscsi_conn { unsigned long suspend_tx; /* suspend Tx */ unsigned long suspend_rx; /* suspend Rx */ - /* abort */ - wait_queue_head_t ehwait; /* used in eh_abort() */ - struct iscsi_tm tmhdr; - struct timer_list tmf_timer; - int tmf_state; /* see TMF_INITIAL, etc.*/ - /* negotiated params */ unsigned max_recv_dlength; /* initiator_max_recv_dsl*/ unsigned max_xmit_dlength; /* target_max_recv_dsl */ @@ -270,6 +264,11 @@ struct iscsi_session { * and recv lock. */ struct mutex eh_mutex; + /* abort */ + wait_queue_head_t ehwait; /* used in eh_abort() */ + struct iscsi_tm tmhdr; + struct timer_list tmf_timer; + int tmf_state; /* see TMF_INITIAL, etc.*/ /* iSCSI session-wide sequencing */ uint32_t cmdsn;