diff options
| -rw-r--r-- | drivers/scsi/be2iscsi/be_main.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/bnx2i/bnx2i_iscsi.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/cxgb3i/cxgb3i_iscsi.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/iscsi_tcp.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/libiscsi.c | 251 | ||||
| -rw-r--r-- | drivers/scsi/scsi_transport_iscsi.c | 4 | ||||
| -rw-r--r-- | include/scsi/iscsi_if.h | 3 | ||||
| -rw-r--r-- | include/scsi/libiscsi.h | 1 |
8 files changed, 190 insertions, 77 deletions
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index d15df07ba783..1a557fa77888 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -3859,7 +3859,7 @@ struct iscsi_transport beiscsi_iscsi_transport = { ISCSI_USERNAME | ISCSI_PASSWORD | ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN | ISCSI_FAST_ABORT | ISCSI_ABORT_TMO | - ISCSI_LU_RESET_TMO | + ISCSI_LU_RESET_TMO | ISCSI_TGT_RESET_TMO | ISCSI_PING_TMO | ISCSI_RECV_TMO | ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME, .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS | diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_iscsi.c index 89e84c302aa0..070118a8f184 100644 --- a/drivers/scsi/bnx2i/bnx2i_iscsi.c +++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c @@ -2028,7 +2028,7 @@ struct iscsi_transport bnx2i_iscsi_transport = { ISCSI_USERNAME | ISCSI_PASSWORD | ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN | ISCSI_FAST_ABORT | ISCSI_ABORT_TMO | - ISCSI_LU_RESET_TMO | + ISCSI_LU_RESET_TMO | ISCSI_TGT_RESET_TMO | ISCSI_PING_TMO | ISCSI_RECV_TMO | ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME, .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_NETDEV_NAME, diff --git a/drivers/scsi/cxgb3i/cxgb3i_iscsi.c b/drivers/scsi/cxgb3i/cxgb3i_iscsi.c index 2631bddd255e..969c83162cc4 100644 --- a/drivers/scsi/cxgb3i/cxgb3i_iscsi.c +++ b/drivers/scsi/cxgb3i/cxgb3i_iscsi.c @@ -937,7 +937,7 @@ static struct iscsi_transport cxgb3i_iscsi_transport = { ISCSI_USERNAME | ISCSI_PASSWORD | ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN | ISCSI_FAST_ABORT | ISCSI_ABORT_TMO | - ISCSI_LU_RESET_TMO | + ISCSI_LU_RESET_TMO | ISCSI_TGT_RESET_TMO | ISCSI_PING_TMO | ISCSI_RECV_TMO | ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME, .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS | diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index edc49ca49cea..517da3fd89d3 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -903,7 +903,7 @@ static struct iscsi_transport iscsi_sw_tcp_transport = { ISCSI_USERNAME | ISCSI_PASSWORD | ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN | ISCSI_FAST_ABORT | ISCSI_ABORT_TMO | - ISCSI_LU_RESET_TMO | + ISCSI_LU_RESET_TMO | ISCSI_TGT_RESET_TMO | ISCSI_PING_TMO | ISCSI_RECV_TMO | ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME, .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS | diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index b6ffdc5512cd..07ec997c5d4f 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -298,17 +298,18 @@ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode) hdr_lun = scsilun_to_int((struct scsi_lun *)tmf->lun); if (hdr_lun != task->sc->device->lun) return 0; - + /* fall through */ + case ISCSI_TM_FUNC_TARGET_WARM_RESET: /* * Fail all SCSI cmd PDUs */ if (opcode != ISCSI_OP_SCSI_DATA_OUT) { iscsi_conn_printk(KERN_INFO, conn, "task [op %x/%x itt " - "0x%x/0x%x lun %u] " + "0x%x/0x%x] " "rejected.\n", task->hdr->opcode, opcode, - task->itt, task->hdr_itt, hdr_lun); + task->itt, task->hdr_itt); return -EACCES; } /* @@ -318,10 +319,9 @@ static int iscsi_check_tmf_restrictions(struct iscsi_task *task, int opcode) if (conn->session->fast_abort) { iscsi_conn_printk(KERN_INFO, conn, "task [op %x/%x itt " - "0x%x/0x%x lun %u] " - "fast abort.\n", + "0x%x/0x%x] fast abort.\n", task->hdr->opcode, opcode, - task->itt, task->hdr_itt, hdr_lun); + task->itt, task->hdr_itt); return -EACCES; } break; @@ -1757,72 +1757,6 @@ int iscsi_target_alloc(struct scsi_target *starget) } EXPORT_SYMBOL_GPL(iscsi_target_alloc); -void iscsi_session_recovery_timedout(struct iscsi_cls_session *cls_session) -{ - struct iscsi_session *session = cls_session->dd_data; - - spin_lock_bh(&session->lock); - if (session->state != ISCSI_STATE_LOGGED_IN) { - session->state = ISCSI_STATE_RECOVERY_FAILED; - if (session->leadconn) - wake_up(&session->leadconn->ehwait); - } - spin_unlock_bh(&session->lock); -} -EXPORT_SYMBOL_GPL(iscsi_session_recovery_timedout); - -int iscsi_eh_target_reset(struct scsi_cmnd *sc) -{ - struct iscsi_cls_session *cls_session; - struct iscsi_session *session; - struct iscsi_conn *conn; - - cls_session = starget_to_session(scsi_target(sc->device)); - session = cls_session->dd_data; - conn = session->leadconn; - - mutex_lock(&session->eh_mutex); - spin_lock_bh(&session->lock); - if (session->state == ISCSI_STATE_TERMINATE) { -failed: - ISCSI_DBG_EH(session, - "failing target reset: Could not log back into " - "target [age %d]\n", - session->age); - spin_unlock_bh(&session->lock); - mutex_unlock(&session->eh_mutex); - return FAILED; - } - - spin_unlock_bh(&session->lock); - mutex_unlock(&session->eh_mutex); - /* - * we drop the lock here but the leadconn cannot be destoyed while - * we are in the scsi eh - */ - iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED); - - ISCSI_DBG_EH(session, "wait for relogin\n"); - wait_event_interruptible(conn->ehwait, - session->state == ISCSI_STATE_TERMINATE || - session->state == ISCSI_STATE_LOGGED_IN || - session->state == ISCSI_STATE_RECOVERY_FAILED); - if (signal_pending(current)) - flush_signals(current); - - mutex_lock(&session->eh_mutex); - spin_lock_bh(&session->lock); - if (session->state == ISCSI_STATE_LOGGED_IN) { - ISCSI_DBG_EH(session, - "target reset succeeded\n"); - } else - goto failed; - spin_unlock_bh(&session->lock); - mutex_unlock(&session->eh_mutex); - return SUCCESS; -} -EXPORT_SYMBOL_GPL(iscsi_eh_target_reset); - static void iscsi_tmf_timedout(unsigned long data) { struct iscsi_conn *conn = (struct iscsi_conn *)data; @@ -2329,6 +2263,172 @@ done: } EXPORT_SYMBOL_GPL(iscsi_eh_device_reset); +void iscsi_session_recovery_timedout(struct iscsi_cls_session *cls_session) +{ + struct iscsi_session *session = cls_session->dd_data; + + spin_lock_bh(&session->lock); + if (session->state != ISCSI_STATE_LOGGED_IN) { + session->state = ISCSI_STATE_RECOVERY_FAILED; + if (session->leadconn) + wake_up(&session->leadconn->ehwait); + } + spin_unlock_bh(&session->lock); +} +EXPORT_SYMBOL_GPL(iscsi_session_recovery_timedout); + +/** + * iscsi_eh_session_reset - drop session and attempt relogin + * @sc: scsi command + * + * This function will wait for a relogin, session termination from + * userspace, or a recovery/replacement timeout. + */ +static int iscsi_eh_session_reset(struct scsi_cmnd *sc) +{ + struct iscsi_cls_session *cls_session; + struct iscsi_session *session; + struct iscsi_conn *conn; + + cls_session = starget_to_session(scsi_target(sc->device)); + session = cls_session->dd_data; + conn = session->leadconn; + + mutex_lock(&session->eh_mutex); + spin_lock_bh(&session->lock); + if (session->state == ISCSI_STATE_TERMINATE) { +failed: + ISCSI_DBG_EH(session, + "failing session reset: Could not log back into " + "%s, %s [age %d]\n", session->targetname, + conn->persistent_address, session->age); + spin_unlock_bh(&session->lock); + mutex_unlock(&session->eh_mutex); + return FAILED; + } + + spin_unlock_bh(&session->lock); + mutex_unlock(&session->eh_mutex); + /* + * we drop the lock here but the leadconn cannot be destoyed while + * we are in the scsi eh + */ + iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED); + + ISCSI_DBG_EH(session, "wait for relogin\n"); + wait_event_interruptible(conn->ehwait, + session->state == ISCSI_STATE_TERMINATE || + session->state == ISCSI_STATE_LOGGED_IN || + session->state == ISCSI_STATE_RECOVERY_FAILED); + if (signal_pending(current)) + flush_signals(current); + + mutex_lock(&session->eh_mutex); + spin_lock_bh(&session->lock); + if (session->state == ISCSI_STATE_LOGGED_IN) { + ISCSI_DBG_EH(session, + "session reset succeeded for %s,%s\n", + session->targetname, conn->persistent_address); + } else + goto failed; + spin_unlock_bh(&session->lock); + mutex_unlock(&session->eh_mutex); + return SUCCESS; +} + +static void iscsi_prep_tgt_reset_pdu(struct scsi_cmnd *sc, struct iscsi_tm *hdr) +{ + memset(hdr, 0, sizeof(*hdr)); + hdr->opcode = ISCSI_OP_SCSI_TMFUNC | ISCSI_OP_IMMEDIATE; + hdr->flags = ISCSI_TM_FUNC_TARGET_WARM_RESET & ISCSI_FLAG_TM_FUNC_MASK; + hdr->flags |= ISCSI_FLAG_CMD_FINAL; + hdr->rtt = RESERVED_ITT; +} + +/** + * iscsi_eh_target_reset - reset target + * @sc: scsi command + * + * This will attempt to send a warm target reset. If that fails + * then we will drop the session and attempt ERL0 recovery. + */ +int iscsi_eh_target_reset(struct scsi_cmnd *sc) +{ + struct iscsi_cls_session *cls_session; + struct iscsi_session *session; + struct iscsi_conn *conn; + struct iscsi_tm *hdr; + int rc = FAILED; + + cls_session = starget_to_session(scsi_target(sc->device)); + session = cls_session->dd_data; + + ISCSI_DBG_EH(session, "tgt Reset [sc %p tgt %s]\n", sc, + session->targetname); + + mutex_lock(&session->eh_mutex); + spin_lock_bh(&session->lock); + /* + * Just check if we are not logged in. We cannot check for + * the phase because the reset could come from a ioctl. + */ + if (!session->leadconn || session->state != ISCSI_STATE_LOGGED_IN) + goto unlock; + conn = session->leadconn; + + /* only have one tmf outstanding at a time */ + if (conn->tmf_state != TMF_INITIAL) + goto unlock; + conn->tmf_state = TMF_QUEUED; + + hdr = &conn->tmhdr; + iscsi_prep_tgt_reset_pdu(sc, hdr); + + if (iscsi_exec_task_mgmt_fn(conn, hdr, session->age, + session->tgt_reset_timeout)) { + rc = FAILED; + goto unlock; + } + + switch (conn->tmf_state) { + case TMF_SUCCESS: + break; + case TMF_TIMEDOUT: + spin_unlock_bh(&session->lock); + iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED); + goto done; + default: + conn->tmf_state = TMF_INITIAL; + goto unlock; + } + + rc = SUCCESS; + spin_unlock_bh(&session->lock); + + iscsi_suspend_tx(conn); + + spin_lock_bh(&session->lock); + memset(hdr, 0, sizeof(*hdr)); + fail_scsi_tasks(conn, -1, DID_ERROR); + conn->tmf_state = TMF_INITIAL; + spin_unlock_bh(&session->lock); + + iscsi_start_tx(conn); + goto done; + +unlock: + spin_unlock_bh(&session->lock); +done: + ISCSI_DBG_EH(session, "tgt %s reset result = %s\n", session->targetname, + rc == SUCCESS ? "SUCCESS" : "FAILED"); + mutex_unlock(&session->eh_mutex); + + if (rc == FAILED) + rc = iscsi_eh_session_reset(sc); + return rc; +} +EXPORT_SYMBOL_GPL(iscsi_eh_target_reset); + /* * Pre-allocate a pool of @max items of @item_size. By default, the pool * should be accessed via kfifo_{get,put} on q->queue. @@ -2595,6 +2695,7 @@ iscsi_session_setup(struct iscsi_transport *iscsit, struct Scsi_Host *shost, session->host = shost; session->state = ISCSI_STATE_FREE; session->fast_abort = 1; + session->tgt_reset_timeout = 30; session->lu_reset_timeout = 15; session->abort_timeout = 10; session->scsi_cmds_max = scsi_cmds; @@ -3033,6 +3134,9 @@ int iscsi_set_param(struct iscsi_cls_conn *cls_conn, case ISCSI_PARAM_LU_RESET_TMO: sscanf(buf, "%d", &session->lu_reset_timeout); break; + case ISCSI_PARAM_TGT_RESET_TMO: + sscanf(buf, "%d", &session->tgt_reset_timeout); + break; case ISCSI_PARAM_PING_TMO: sscanf(buf, "%d", &conn->ping_timeout); break; @@ -3132,6 +3236,9 @@ int iscsi_session_get_param(struct iscsi_cls_session *cls_session, case ISCSI_PARAM_LU_RESET_TMO: len = sprintf(buf, "%d\n", session->lu_reset_timeout); break; + case ISCSI_PARAM_TGT_RESET_TMO: + len = sprintf(buf, "%d\n", session->tgt_reset_timeout); + break; case ISCSI_PARAM_INITIAL_R2T_EN: len = sprintf(buf, "%d\n", session->initial_r2t_en); break; diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index ad897df36615..dc04ca124a69 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -30,7 +30,7 @@ #include <scsi/scsi_transport_iscsi.h> #include <scsi/iscsi_if.h> -#define ISCSI_SESSION_ATTRS 21 +#define ISCSI_SESSION_ATTRS 22 #define ISCSI_CONN_ATTRS 13 #define ISCSI_HOST_ATTRS 4 @@ -1759,6 +1759,7 @@ iscsi_session_attr(password_in, ISCSI_PARAM_PASSWORD_IN, 1); iscsi_session_attr(fast_abort, ISCSI_PARAM_FAST_ABORT, 0); iscsi_session_attr(abort_tmo, ISCSI_PARAM_ABORT_TMO, 0); iscsi_session_attr(lu_reset_tmo, ISCSI_PARAM_LU_RESET_TMO, 0); +iscsi_session_attr(tgt_reset_tmo, ISCSI_PARAM_TGT_RESET_TMO, 0); iscsi_session_attr(ifacename, ISCSI_PARAM_IFACE_NAME, 0); iscsi_session_attr(initiatorname, ISCSI_PARAM_INITIATOR_NAME, 0) @@ -2000,6 +2001,7 @@ iscsi_register_transport(struct iscsi_transport *tt) SETUP_SESSION_RD_ATTR(fast_abort, ISCSI_FAST_ABORT); SETUP_SESSION_RD_ATTR(abort_tmo, ISCSI_ABORT_TMO); SETUP_SESSION_RD_ATTR(lu_reset_tmo,ISCSI_LU_RESET_TMO); + SETUP_SESSION_RD_ATTR(tgt_reset_tmo,ISCSI_TGT_RESET_TMO); SETUP_SESSION_RD_ATTR(ifacename, ISCSI_IFACE_NAME); SETUP_SESSION_RD_ATTR(initiatorname, ISCSI_INITIATOR_NAME); SETUP_PRIV_SESSION_RD_ATTR(recovery_tmo); diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h index d67dda2b6aa0..66d377b9c72b 100644 --- a/include/scsi/iscsi_if.h +++ b/include/scsi/iscsi_if.h @@ -311,6 +311,8 @@ enum iscsi_param { ISCSI_PARAM_IFACE_NAME, ISCSI_PARAM_ISID, ISCSI_PARAM_INITIATOR_NAME, + + ISCSI_PARAM_TGT_RESET_TMO, /* must always be last */ ISCSI_PARAM_MAX, }; @@ -350,6 +352,7 @@ enum iscsi_param { #define ISCSI_IFACE_NAME (1ULL << ISCSI_PARAM_IFACE_NAME) #define ISCSI_ISID (1ULL << ISCSI_PARAM_ISID) #define ISCSI_INITIATOR_NAME (1ULL << ISCSI_PARAM_INITIATOR_NAME) +#define ISCSI_TGT_RESET_TMO (1ULL << ISCSI_PARAM_TGT_RESET_TMO) /* iSCSI HBA params */ enum iscsi_host_param { diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 2db2bc26b1e9..7394e3bc8f4b 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -267,6 +267,7 @@ struct iscsi_session { /* configuration */ int abort_timeout; int lu_reset_timeout; + int tgt_reset_timeout; int initial_r2t_en; unsigned max_r2t; int imm_data_en; |