diff options
Diffstat (limited to 'drivers/scsi/qedf/qedf_main.c')
-rw-r--r-- | drivers/scsi/qedf/qedf_main.c | 281 |
1 files changed, 212 insertions, 69 deletions
diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c index 9f9431a4cc0e..5b07235497c6 100644 --- a/drivers/scsi/qedf/qedf_main.c +++ b/drivers/scsi/qedf/qedf_main.c @@ -124,21 +124,24 @@ static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) { int rc; - if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { - QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n"); - return false; - } - while (qedf->fipvlan_retries--) { + /* This is to catch if link goes down during fipvlan retries */ + if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { + QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); + return false; + } + if (qedf->vlan_id > 0) return true; + QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Retry %d.\n", qedf->fipvlan_retries); init_completion(&qedf->fipvlan_compl); qedf_fcoe_send_vlan_req(qedf); rc = wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ); - if (rc > 0) { + if (rc > 0 && + (atomic_read(&qedf->link_state) == QEDF_LINK_UP)) { fcoe_ctlr_link_up(&qedf->ctlr); return true; } @@ -153,12 +156,19 @@ static void qedf_handle_link_update(struct work_struct *work) container_of(work, struct qedf_ctx, link_update.work); int rc; - QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n"); + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n", + atomic_read(&qedf->link_state)); if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { rc = qedf_initiate_fipvlan_req(qedf); if (rc) return; + + if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { + qedf->vlan_id = 0; + return; + } + /* * If we get here then we never received a repsonse to our * fip vlan request so set the vlan_id to the default and @@ -185,7 +195,9 @@ static void qedf_handle_link_update(struct work_struct *work) QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Calling fcoe_ctlr_link_down().\n"); fcoe_ctlr_link_down(&qedf->ctlr); - qedf_wait_for_upload(qedf); + if (qedf_wait_for_upload(qedf) == false) + QEDF_ERR(&qedf->dbg_ctx, + "Could not upload all sessions.\n"); /* Reset the number of FIP VLAN retries */ qedf->fipvlan_retries = qedf_fipvlan_retries; } @@ -615,50 +627,113 @@ static struct scsi_transport_template *qedf_fc_vport_transport_template; static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) { struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); - struct fc_rport_libfc_priv *rp = rport->dd_data; - struct qedf_rport *fcport; struct fc_lport *lport; struct qedf_ctx *qedf; struct qedf_ioreq *io_req; + struct fc_rport_libfc_priv *rp = rport->dd_data; + struct fc_rport_priv *rdata; + struct qedf_rport *fcport = NULL; int rc = FAILED; + int wait_count = 100; + int refcount = 0; int rval; - - if (fc_remote_port_chkready(rport)) { - QEDF_ERR(NULL, "rport not ready\n"); - goto out; - } + int got_ref = 0; lport = shost_priv(sc_cmd->device->host); qedf = (struct qedf_ctx *)lport_priv(lport); - if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) { - QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n"); + /* rport and tgt are allocated together, so tgt should be non-NULL */ + fcport = (struct qedf_rport *)&rp[1]; + rdata = fcport->rdata; + if (!rdata || !kref_get_unless_zero(&rdata->kref)) { + QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd); + rc = 1; goto out; } - fcport = (struct qedf_rport *)&rp[1]; io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; if (!io_req) { - QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n"); + QEDF_ERR(&qedf->dbg_ctx, + "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n", + sc_cmd, sc_cmd->cmnd[0], + rdata->ids.port_id); rc = SUCCESS; - goto out; + goto drop_rdata_kref; + } + + rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */ + if (rval) + got_ref = 1; + + /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ + if (!rval || io_req->sc_cmd != sc_cmd) { + QEDF_ERR(&qedf->dbg_ctx, + "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n", + io_req->sc_cmd, sc_cmd, rdata->ids.port_id); + + goto drop_rdata_kref; + } + + if (fc_remote_port_chkready(rport)) { + refcount = kref_read(&io_req->refcount); + QEDF_ERR(&qedf->dbg_ctx, + "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n", + io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], + refcount, rdata->ids.port_id); + + goto drop_rdata_kref; + } + + rc = fc_block_scsi_eh(sc_cmd); + if (rc) + goto drop_rdata_kref; + + if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { + QEDF_ERR(&qedf->dbg_ctx, + "Connection uploading, xid=0x%x., port_id=%06x\n", + io_req->xid, rdata->ids.port_id); + while (io_req->sc_cmd && (wait_count != 0)) { + msleep(100); + wait_count--; + } + if (wait_count) { + QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n"); + rc = SUCCESS; + } else { + QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n"); + rc = FAILED; + } + goto drop_rdata_kref; } - QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x " - "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx); + if (lport->state != LPORT_ST_READY || !(lport->link_up)) { + QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n"); + goto drop_rdata_kref; + } + + QEDF_ERR(&qedf->dbg_ctx, + "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n", + io_req, sc_cmd, io_req->xid, io_req->fp_idx, + rdata->ids.port_id); if (qedf->stop_io_on_error) { qedf_stop_all_io(qedf); rc = SUCCESS; - goto out; + goto drop_rdata_kref; } init_completion(&io_req->abts_done); rval = qedf_initiate_abts(io_req, true); if (rval) { QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); - goto out; + /* + * If we fail to queue the ABTS then return this command to + * the SCSI layer as it will own and free the xid + */ + rc = SUCCESS; + qedf_scsi_done(qedf, io_req, DID_ERROR); + goto drop_rdata_kref; } wait_for_completion(&io_req->abts_done); @@ -684,38 +759,68 @@ static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", io_req->xid); +drop_rdata_kref: + kref_put(&rdata->kref, fc_rport_destroy); out: + if (got_ref) + kref_put(&io_req->refcount, qedf_release_cmd); return rc; } static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) { - QEDF_ERR(NULL, "TARGET RESET Issued..."); + QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...", + sc_cmd->device->host->host_no, sc_cmd->device->id, + sc_cmd->device->lun); return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); } static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) { - QEDF_ERR(NULL, "LUN RESET Issued...\n"); + QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ", + sc_cmd->device->host->host_no, sc_cmd->device->id, + sc_cmd->device->lun); return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); } -void qedf_wait_for_upload(struct qedf_ctx *qedf) +bool qedf_wait_for_upload(struct qedf_ctx *qedf) { - while (1) { + struct qedf_rport *fcport = NULL; + int wait_cnt = 120; + + while (wait_cnt--) { if (atomic_read(&qedf->num_offloads)) - QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, - "Waiting for all uploads to complete.\n"); + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, + "Waiting for all uploads to complete num_offloads = 0x%x.\n", + atomic_read(&qedf->num_offloads)); else - break; + return true; msleep(500); } + + rcu_read_lock(); + list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { + if (fcport && test_bit(QEDF_RPORT_SESSION_READY, + &fcport->flags)) { + if (fcport->rdata) + QEDF_ERR(&qedf->dbg_ctx, + "Waiting for fcport %p portid=%06x.\n", + fcport, fcport->rdata->ids.port_id); + } else { + QEDF_ERR(&qedf->dbg_ctx, + "Waiting for fcport %p.\n", fcport); + } + } + rcu_read_unlock(); + return false; + } /* Performs soft reset of qedf_ctx by simulating a link down/up */ -static void qedf_ctx_soft_reset(struct fc_lport *lport) +void qedf_ctx_soft_reset(struct fc_lport *lport) { struct qedf_ctx *qedf; + struct qed_link_output if_link; if (lport->vport) { QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); @@ -726,11 +831,32 @@ static void qedf_ctx_soft_reset(struct fc_lport *lport) /* For host reset, essentially do a soft link up/down */ atomic_set(&qedf->link_state, QEDF_LINK_DOWN); + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, + "Queuing link down work.\n"); queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 0); - qedf_wait_for_upload(qedf); + + if (qedf_wait_for_upload(qedf) == false) { + QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); + WARN_ON(atomic_read(&qedf->num_offloads)); + } + + /* Before setting link up query physical link state */ + qed_ops->common->get_link(qedf->cdev, &if_link); + /* Bail if the physical link is not up */ + if (!if_link.link_up) { + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, + "Physical link is not up.\n"); + return; + } + /* Flush and wait to make sure link down is processed */ + flush_delayed_work(&qedf->link_update); + msleep(500); + atomic_set(&qedf->link_state, QEDF_LINK_UP); qedf->vlan_id = 0; + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, + "Queue link up work.\n"); queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 0); } @@ -740,22 +866,6 @@ static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) { struct fc_lport *lport; struct qedf_ctx *qedf; - struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); - struct fc_rport_libfc_priv *rp = rport->dd_data; - struct qedf_rport *fcport = (struct qedf_rport *)&rp[1]; - int rval; - - rval = fc_remote_port_chkready(rport); - - if (rval) { - QEDF_ERR(NULL, "device_reset rport not ready\n"); - return FAILED; - } - - if (fcport == NULL) { - QEDF_ERR(NULL, "device_reset: rport is NULL\n"); - return FAILED; - } lport = shost_priv(sc_cmd->device->host); qedf = lport_priv(lport); @@ -907,8 +1017,10 @@ static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); kfree_skb(skb); rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); - if (rdata) + if (rdata) { rdata->retries = lport->max_rport_retry_count; + kref_put(&rdata->kref, fc_rport_destroy); + } return -EINVAL; } /* End NPIV filtering */ @@ -1031,7 +1143,12 @@ static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) if (qedf_dump_frames) print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, 1, skb->data, skb->len, false); - qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); + rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); + if (rc) { + QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc); + kfree_skb(skb); + return rc; + } return 0; } @@ -1224,6 +1341,8 @@ static void qedf_upload_connection(struct qedf_ctx *qedf, static void qedf_cleanup_fcport(struct qedf_ctx *qedf, struct qedf_rport *fcport) { + struct fc_rport_priv *rdata = fcport->rdata; + QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", fcport->rdata->ids.port_id); @@ -1235,6 +1354,7 @@ static void qedf_cleanup_fcport(struct qedf_ctx *qedf, qedf_free_sq(qedf, fcport); fcport->rdata = NULL; fcport->qedf = NULL; + kref_put(&rdata->kref, fc_rport_destroy); } /** @@ -1310,6 +1430,8 @@ static void qedf_rport_event_handler(struct fc_lport *lport, break; } + /* Initial reference held on entry, so this can't fail */ + kref_get(&rdata->kref); fcport->rdata = rdata; fcport->rport = rport; @@ -1369,11 +1491,15 @@ static void qedf_rport_event_handler(struct fc_lport *lport, */ fcport = (struct qedf_rport *)&rp[1]; + spin_lock_irqsave(&fcport->rport_lock, flags); /* Only free this fcport if it is offloaded already */ - if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { - set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags); + if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && + !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, + &fcport->flags)) { + set_bit(QEDF_RPORT_UPLOADING_CONNECTION, + &fcport->flags); + spin_unlock_irqrestore(&fcport->rport_lock, flags); qedf_cleanup_fcport(qedf, fcport); - /* * Remove fcport to list of qedf_ctx list of offloaded * ports @@ -1385,8 +1511,9 @@ static void qedf_rport_event_handler(struct fc_lport *lport, clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags); atomic_dec(&qedf->num_offloads); + } else { + spin_unlock_irqrestore(&fcport->rport_lock, flags); } - break; case RPORT_EV_NONE: @@ -1498,11 +1625,15 @@ static int qedf_lport_setup(struct qedf_ctx *qedf) fc_set_wwnn(lport, qedf->wwnn); fc_set_wwpn(lport, qedf->wwpn); - fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0); + if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) { + QEDF_ERR(&qedf->dbg_ctx, + "fcoe_libfc_config failed.\n"); + return -ENOMEM; + } /* Allocate the exchange manager */ - fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1, - qedf->max_els_xid, NULL); + fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, + 0xfffe, NULL); if (fc_lport_init_stats(lport)) return -ENOMEM; @@ -1625,14 +1756,15 @@ static int qedf_vport_create(struct fc_vport *vport, bool disabled) vport_qedf->wwpn = vn_port->wwpn; vn_port->host->transportt = qedf_fc_vport_transport_template; - vn_port->host->can_queue = QEDF_MAX_ELS_XID; + vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; vn_port->host->max_lun = qedf_max_lun; vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; rc = scsi_add_host(vn_port->host, &vport->dev); if (rc) { - QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n"); + QEDF_WARN(&base_qedf->dbg_ctx, + "Error adding Scsi_Host rc=0x%x.\n", rc); goto err2; } @@ -2155,7 +2287,8 @@ static int qedf_setup_int(struct qedf_ctx *qedf) QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); qedf->int_info.used_cnt = 1; - QEDF_ERR(&qedf->dbg_ctx, "Only MSI-X supported. Failing probe.\n"); + QEDF_ERR(&qedf->dbg_ctx, + "Cannot load driver due to a lack of MSI-X vectors.\n"); return -EINVAL; } @@ -2356,6 +2489,13 @@ static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; struct qedf_skb_work *skb_work; + if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, + "Dropping frame as link state is down.\n"); + kfree_skb(skb); + return 0; + } + skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); if (!skb_work) { QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " @@ -2990,6 +3130,8 @@ static int __qedf_probe(struct pci_dev *pdev, int mode) goto err0; } + fc_disc_init(lport); + /* Initialize qedf_ctx */ qedf = lport_priv(lport); qedf->lport = lport; @@ -3005,6 +3147,7 @@ static int __qedf_probe(struct pci_dev *pdev, int mode) pci_set_drvdata(pdev, qedf); init_completion(&qedf->fipvlan_compl); mutex_init(&qedf->stats_mutex); + mutex_init(&qedf->flush_mutex); QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "QLogic FastLinQ FCoE Module qedf %s, " @@ -3181,11 +3324,6 @@ static int __qedf_probe(struct pci_dev *pdev, int mode) sprintf(host_buf, "host_%d", host->host_no); qed_ops->common->set_name(qedf->cdev, host_buf); - - /* Set xid max values */ - qedf->max_scsi_xid = QEDF_MAX_SCSI_XID; - qedf->max_els_xid = QEDF_MAX_ELS_XID; - /* Allocate cmd mgr */ qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); if (!qedf->cmd_mgr) { @@ -3196,12 +3334,15 @@ static int __qedf_probe(struct pci_dev *pdev, int mode) if (mode != QEDF_MODE_RECOVERY) { host->transportt = qedf_fc_transport_template; - host->can_queue = QEDF_MAX_ELS_XID; host->max_lun = qedf_max_lun; host->max_cmd_len = QEDF_MAX_CDB_LEN; + host->can_queue = FCOE_PARAMS_NUM_TASKS; rc = scsi_add_host(host, &pdev->dev); - if (rc) + if (rc) { + QEDF_WARN(&qedf->dbg_ctx, + "Error adding Scsi_Host rc=0x%x.\n", rc); goto err6; + } } memset(¶ms, 0, sizeof(params)); @@ -3377,7 +3518,9 @@ static void __qedf_remove(struct pci_dev *pdev, int mode) fcoe_ctlr_link_down(&qedf->ctlr); else fc_fabric_logoff(qedf->lport); - qedf_wait_for_upload(qedf); + + if (qedf_wait_for_upload(qedf) == false) + QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); #ifdef CONFIG_DEBUG_FS qedf_dbg_host_exit(&(qedf->dbg_ctx)); |