| /******************************************************************* |
| * This file is part of the Emulex Linux Device Driver for * |
| * Fibre Channel Host Bus Adapters. * |
| * Copyright (C) 2004-2008 Emulex. All rights reserved. * |
| * EMULEX and SLI are trademarks of Emulex. * |
| * www.emulex.com * |
| * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
| * * |
| * This program is free software; you can redistribute it and/or * |
| * modify it under the terms of version 2 of the GNU General * |
| * Public License as published by the Free Software Foundation. * |
| * This program is distributed in the hope that it will be useful. * |
| * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * |
| * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * |
| * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * |
| * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * |
| * TO BE LEGALLY INVALID. See the GNU General Public License for * |
| * more details, a copy of which can be found in the file COPYING * |
| * included with this package. * |
| *******************************************************************/ |
| |
| #include <linux/blkdev.h> |
| #include <linux/pci.h> |
| #include <linux/kthread.h> |
| #include <linux/interrupt.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_transport_fc.h> |
| |
| #include "lpfc_hw.h" |
| #include "lpfc_disc.h" |
| #include "lpfc_sli.h" |
| #include "lpfc_scsi.h" |
| #include "lpfc.h" |
| #include "lpfc_logmsg.h" |
| #include "lpfc_crtn.h" |
| #include "lpfc_vport.h" |
| #include "lpfc_debugfs.h" |
| |
| /* AlpaArray for assignment of scsid for scan-down and bind_method */ |
| static uint8_t lpfcAlpaArray[] = { |
| 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, |
| 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, |
| 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, |
| 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, |
| 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, |
| 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, |
| 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, |
| 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, |
| 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, |
| 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, |
| 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, |
| 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, |
| 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 |
| }; |
| |
| static void lpfc_disc_timeout_handler(struct lpfc_vport *); |
| static void lpfc_disc_flush_list(struct lpfc_vport *vport); |
| |
| void |
| lpfc_terminate_rport_io(struct fc_rport *rport) |
| { |
| struct lpfc_rport_data *rdata; |
| struct lpfc_nodelist * ndlp; |
| struct lpfc_hba *phba; |
| |
| rdata = rport->dd_data; |
| ndlp = rdata->pnode; |
| |
| if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
| if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) |
| printk(KERN_ERR "Cannot find remote node" |
| " to terminate I/O Data x%x\n", |
| rport->port_id); |
| return; |
| } |
| |
| phba = ndlp->vport->phba; |
| |
| lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, |
| "rport terminate: sid:x%x did:x%x flg:x%x", |
| ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); |
| |
| if (ndlp->nlp_sid != NLP_NO_SID) { |
| lpfc_sli_abort_iocb(ndlp->vport, |
| &phba->sli.ring[phba->sli.fcp_ring], |
| ndlp->nlp_sid, 0, LPFC_CTX_TGT); |
| } |
| } |
| |
| /* |
| * This function will be called when dev_loss_tmo fire. |
| */ |
| void |
| lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) |
| { |
| struct lpfc_rport_data *rdata; |
| struct lpfc_nodelist * ndlp; |
| struct lpfc_vport *vport; |
| struct lpfc_hba *phba; |
| struct lpfc_work_evt *evtp; |
| int put_node; |
| int put_rport; |
| |
| rdata = rport->dd_data; |
| ndlp = rdata->pnode; |
| if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) |
| return; |
| |
| vport = ndlp->vport; |
| phba = vport->phba; |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, |
| "rport devlosscb: sid:x%x did:x%x flg:x%x", |
| ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); |
| |
| /* Don't defer this if we are in the process of deleting the vport |
| * or unloading the driver. The unload will cleanup the node |
| * appropriately we just need to cleanup the ndlp rport info here. |
| */ |
| if (vport->load_flag & FC_UNLOADING) { |
| put_node = rdata->pnode != NULL; |
| put_rport = ndlp->rport != NULL; |
| rdata->pnode = NULL; |
| ndlp->rport = NULL; |
| if (put_node) |
| lpfc_nlp_put(ndlp); |
| if (put_rport) |
| put_device(&rport->dev); |
| return; |
| } |
| |
| if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) |
| return; |
| |
| evtp = &ndlp->dev_loss_evt; |
| |
| if (!list_empty(&evtp->evt_listp)) |
| return; |
| |
| spin_lock_irq(&phba->hbalock); |
| /* We need to hold the node by incrementing the reference |
| * count until this queued work is done |
| */ |
| evtp->evt_arg1 = lpfc_nlp_get(ndlp); |
| if (evtp->evt_arg1) { |
| evtp->evt = LPFC_EVT_DEV_LOSS; |
| list_add_tail(&evtp->evt_listp, &phba->work_list); |
| lpfc_worker_wake_up(phba); |
| } |
| spin_unlock_irq(&phba->hbalock); |
| |
| return; |
| } |
| |
| /* |
| * This function is called from the worker thread when dev_loss_tmo |
| * expire. |
| */ |
| static void |
| lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_rport_data *rdata; |
| struct fc_rport *rport; |
| struct lpfc_vport *vport; |
| struct lpfc_hba *phba; |
| uint8_t *name; |
| int put_node; |
| int put_rport; |
| int warn_on = 0; |
| |
| rport = ndlp->rport; |
| |
| if (!rport) |
| return; |
| |
| rdata = rport->dd_data; |
| name = (uint8_t *) &ndlp->nlp_portname; |
| vport = ndlp->vport; |
| phba = vport->phba; |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, |
| "rport devlosstmo:did:x%x type:x%x id:x%x", |
| ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id); |
| |
| /* Don't defer this if we are in the process of deleting the vport |
| * or unloading the driver. The unload will cleanup the node |
| * appropriately we just need to cleanup the ndlp rport info here. |
| */ |
| if (vport->load_flag & FC_UNLOADING) { |
| if (ndlp->nlp_sid != NLP_NO_SID) { |
| /* flush the target */ |
| lpfc_sli_abort_iocb(vport, |
| &phba->sli.ring[phba->sli.fcp_ring], |
| ndlp->nlp_sid, 0, LPFC_CTX_TGT); |
| } |
| put_node = rdata->pnode != NULL; |
| put_rport = ndlp->rport != NULL; |
| rdata->pnode = NULL; |
| ndlp->rport = NULL; |
| if (put_node) |
| lpfc_nlp_put(ndlp); |
| if (put_rport) |
| put_device(&rport->dev); |
| return; |
| } |
| |
| if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, |
| "0284 Devloss timeout Ignored on " |
| "WWPN %x:%x:%x:%x:%x:%x:%x:%x " |
| "NPort x%x\n", |
| *name, *(name+1), *(name+2), *(name+3), |
| *(name+4), *(name+5), *(name+6), *(name+7), |
| ndlp->nlp_DID); |
| return; |
| } |
| |
| if (ndlp->nlp_type & NLP_FABRIC) { |
| /* We will clean up these Nodes in linkup */ |
| put_node = rdata->pnode != NULL; |
| put_rport = ndlp->rport != NULL; |
| rdata->pnode = NULL; |
| ndlp->rport = NULL; |
| if (put_node) |
| lpfc_nlp_put(ndlp); |
| if (put_rport) |
| put_device(&rport->dev); |
| return; |
| } |
| |
| if (ndlp->nlp_sid != NLP_NO_SID) { |
| warn_on = 1; |
| /* flush the target */ |
| lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
| ndlp->nlp_sid, 0, LPFC_CTX_TGT); |
| } |
| |
| if (warn_on) { |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0203 Devloss timeout on " |
| "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " |
| "NPort x%06x Data: x%x x%x x%x\n", |
| *name, *(name+1), *(name+2), *(name+3), |
| *(name+4), *(name+5), *(name+6), *(name+7), |
| ndlp->nlp_DID, ndlp->nlp_flag, |
| ndlp->nlp_state, ndlp->nlp_rpi); |
| } else { |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, |
| "0204 Devloss timeout on " |
| "WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " |
| "NPort x%06x Data: x%x x%x x%x\n", |
| *name, *(name+1), *(name+2), *(name+3), |
| *(name+4), *(name+5), *(name+6), *(name+7), |
| ndlp->nlp_DID, ndlp->nlp_flag, |
| ndlp->nlp_state, ndlp->nlp_rpi); |
| } |
| |
| put_node = rdata->pnode != NULL; |
| put_rport = ndlp->rport != NULL; |
| rdata->pnode = NULL; |
| ndlp->rport = NULL; |
| if (put_node) |
| lpfc_nlp_put(ndlp); |
| if (put_rport) |
| put_device(&rport->dev); |
| |
| if (!(vport->load_flag & FC_UNLOADING) && |
| !(ndlp->nlp_flag & NLP_DELAY_TMO) && |
| !(ndlp->nlp_flag & NLP_NPR_2B_DISC) && |
| (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) |
| lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); |
| } |
| |
| static void |
| lpfc_work_list_done(struct lpfc_hba *phba) |
| { |
| struct lpfc_work_evt *evtp = NULL; |
| struct lpfc_nodelist *ndlp; |
| int free_evt; |
| |
| spin_lock_irq(&phba->hbalock); |
| while (!list_empty(&phba->work_list)) { |
| list_remove_head((&phba->work_list), evtp, typeof(*evtp), |
| evt_listp); |
| spin_unlock_irq(&phba->hbalock); |
| free_evt = 1; |
| switch (evtp->evt) { |
| case LPFC_EVT_ELS_RETRY: |
| ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); |
| lpfc_els_retry_delay_handler(ndlp); |
| free_evt = 0; /* evt is part of ndlp */ |
| /* decrement the node reference count held |
| * for this queued work |
| */ |
| lpfc_nlp_put(ndlp); |
| break; |
| case LPFC_EVT_DEV_LOSS: |
| ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); |
| lpfc_dev_loss_tmo_handler(ndlp); |
| free_evt = 0; |
| /* decrement the node reference count held for |
| * this queued work |
| */ |
| lpfc_nlp_put(ndlp); |
| break; |
| case LPFC_EVT_ONLINE: |
| if (phba->link_state < LPFC_LINK_DOWN) |
| *(int *) (evtp->evt_arg1) = lpfc_online(phba); |
| else |
| *(int *) (evtp->evt_arg1) = 0; |
| complete((struct completion *)(evtp->evt_arg2)); |
| break; |
| case LPFC_EVT_OFFLINE_PREP: |
| if (phba->link_state >= LPFC_LINK_DOWN) |
| lpfc_offline_prep(phba); |
| *(int *)(evtp->evt_arg1) = 0; |
| complete((struct completion *)(evtp->evt_arg2)); |
| break; |
| case LPFC_EVT_OFFLINE: |
| lpfc_offline(phba); |
| lpfc_sli_brdrestart(phba); |
| *(int *)(evtp->evt_arg1) = |
| lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); |
| lpfc_unblock_mgmt_io(phba); |
| complete((struct completion *)(evtp->evt_arg2)); |
| break; |
| case LPFC_EVT_WARM_START: |
| lpfc_offline(phba); |
| lpfc_reset_barrier(phba); |
| lpfc_sli_brdreset(phba); |
| lpfc_hba_down_post(phba); |
| *(int *)(evtp->evt_arg1) = |
| lpfc_sli_brdready(phba, HS_MBRDY); |
| lpfc_unblock_mgmt_io(phba); |
| complete((struct completion *)(evtp->evt_arg2)); |
| break; |
| case LPFC_EVT_KILL: |
| lpfc_offline(phba); |
| *(int *)(evtp->evt_arg1) |
| = (phba->pport->stopped) |
| ? 0 : lpfc_sli_brdkill(phba); |
| lpfc_unblock_mgmt_io(phba); |
| complete((struct completion *)(evtp->evt_arg2)); |
| break; |
| } |
| if (free_evt) |
| kfree(evtp); |
| spin_lock_irq(&phba->hbalock); |
| } |
| spin_unlock_irq(&phba->hbalock); |
| |
| } |
| |
| static void |
| lpfc_work_done(struct lpfc_hba *phba) |
| { |
| struct lpfc_sli_ring *pring; |
| uint32_t ha_copy, status, control, work_port_events; |
| struct lpfc_vport **vports; |
| struct lpfc_vport *vport; |
| int i; |
| |
| spin_lock_irq(&phba->hbalock); |
| ha_copy = phba->work_ha; |
| phba->work_ha = 0; |
| spin_unlock_irq(&phba->hbalock); |
| |
| if (ha_copy & HA_ERATT) |
| lpfc_handle_eratt(phba); |
| |
| if (ha_copy & HA_MBATT) |
| lpfc_sli_handle_mb_event(phba); |
| |
| if (ha_copy & HA_LATT) |
| lpfc_handle_latt(phba); |
| vports = lpfc_create_vport_work_array(phba); |
| if (vports != NULL) |
| for(i = 0; i <= phba->max_vpi; i++) { |
| /* |
| * We could have no vports in array if unloading, so if |
| * this happens then just use the pport |
| */ |
| if (vports[i] == NULL && i == 0) |
| vport = phba->pport; |
| else |
| vport = vports[i]; |
| if (vport == NULL) |
| break; |
| spin_lock_irq(&vport->work_port_lock); |
| work_port_events = vport->work_port_events; |
| vport->work_port_events &= ~work_port_events; |
| spin_unlock_irq(&vport->work_port_lock); |
| if (work_port_events & WORKER_DISC_TMO) |
| lpfc_disc_timeout_handler(vport); |
| if (work_port_events & WORKER_ELS_TMO) |
| lpfc_els_timeout_handler(vport); |
| if (work_port_events & WORKER_HB_TMO) |
| lpfc_hb_timeout_handler(phba); |
| if (work_port_events & WORKER_MBOX_TMO) |
| lpfc_mbox_timeout_handler(phba); |
| if (work_port_events & WORKER_FABRIC_BLOCK_TMO) |
| lpfc_unblock_fabric_iocbs(phba); |
| if (work_port_events & WORKER_FDMI_TMO) |
| lpfc_fdmi_timeout_handler(vport); |
| if (work_port_events & WORKER_RAMP_DOWN_QUEUE) |
| lpfc_ramp_down_queue_handler(phba); |
| if (work_port_events & WORKER_RAMP_UP_QUEUE) |
| lpfc_ramp_up_queue_handler(phba); |
| } |
| lpfc_destroy_vport_work_array(phba, vports); |
| |
| pring = &phba->sli.ring[LPFC_ELS_RING]; |
| status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); |
| status >>= (4*LPFC_ELS_RING); |
| if ((status & HA_RXMASK) |
| || (pring->flag & LPFC_DEFERRED_RING_EVENT)) { |
| if (pring->flag & LPFC_STOP_IOCB_EVENT) { |
| pring->flag |= LPFC_DEFERRED_RING_EVENT; |
| /* Set the lpfc data pending flag */ |
| set_bit(LPFC_DATA_READY, &phba->data_flags); |
| } else { |
| pring->flag &= ~LPFC_DEFERRED_RING_EVENT; |
| lpfc_sli_handle_slow_ring_event(phba, pring, |
| (status & |
| HA_RXMASK)); |
| } |
| /* |
| * Turn on Ring interrupts |
| */ |
| spin_lock_irq(&phba->hbalock); |
| control = readl(phba->HCregaddr); |
| if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { |
| lpfc_debugfs_slow_ring_trc(phba, |
| "WRK Enable ring: cntl:x%x hacopy:x%x", |
| control, ha_copy, 0); |
| |
| control |= (HC_R0INT_ENA << LPFC_ELS_RING); |
| writel(control, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| } |
| else { |
| lpfc_debugfs_slow_ring_trc(phba, |
| "WRK Ring ok: cntl:x%x hacopy:x%x", |
| control, ha_copy, 0); |
| } |
| spin_unlock_irq(&phba->hbalock); |
| } |
| lpfc_work_list_done(phba); |
| } |
| |
| int |
| lpfc_do_work(void *p) |
| { |
| struct lpfc_hba *phba = p; |
| int rc; |
| |
| set_user_nice(current, -20); |
| phba->data_flags = 0; |
| |
| while (1) { |
| /* wait and check worker queue activities */ |
| rc = wait_event_interruptible(phba->work_waitq, |
| (test_and_clear_bit(LPFC_DATA_READY, |
| &phba->data_flags) |
| || kthread_should_stop())); |
| BUG_ON(rc); |
| |
| if (kthread_should_stop()) |
| break; |
| |
| /* Attend pending lpfc data processing */ |
| lpfc_work_done(phba); |
| } |
| return 0; |
| } |
| |
| /* |
| * This is only called to handle FC worker events. Since this a rare |
| * occurance, we allocate a struct lpfc_work_evt structure here instead of |
| * embedding it in the IOCB. |
| */ |
| int |
| lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, |
| uint32_t evt) |
| { |
| struct lpfc_work_evt *evtp; |
| unsigned long flags; |
| |
| /* |
| * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will |
| * be queued to worker thread for processing |
| */ |
| evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); |
| if (!evtp) |
| return 0; |
| |
| evtp->evt_arg1 = arg1; |
| evtp->evt_arg2 = arg2; |
| evtp->evt = evt; |
| |
| spin_lock_irqsave(&phba->hbalock, flags); |
| list_add_tail(&evtp->evt_listp, &phba->work_list); |
| spin_unlock_irqrestore(&phba->hbalock, flags); |
| |
| lpfc_worker_wake_up(phba); |
| |
| return 1; |
| } |
| |
| void |
| lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_nodelist *ndlp, *next_ndlp; |
| int rc; |
| |
| list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { |
| if (!NLP_CHK_NODE_ACT(ndlp)) |
| continue; |
| if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) |
| continue; |
| if ((phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) || |
| ((vport->port_type == LPFC_NPIV_PORT) && |
| (ndlp->nlp_DID == NameServer_DID))) |
| lpfc_unreg_rpi(vport, ndlp); |
| |
| /* Leave Fabric nodes alone on link down */ |
| if (!remove && ndlp->nlp_type & NLP_FABRIC) |
| continue; |
| rc = lpfc_disc_state_machine(vport, ndlp, NULL, |
| remove |
| ? NLP_EVT_DEVICE_RM |
| : NLP_EVT_DEVICE_RECOVERY); |
| } |
| if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { |
| lpfc_mbx_unreg_vpi(vport); |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; |
| spin_unlock_irq(shost->host_lock); |
| } |
| } |
| |
| void |
| lpfc_port_link_failure(struct lpfc_vport *vport) |
| { |
| /* Cleanup any outstanding RSCN activity */ |
| lpfc_els_flush_rscn(vport); |
| |
| /* Cleanup any outstanding ELS commands */ |
| lpfc_els_flush_cmd(vport); |
| |
| lpfc_cleanup_rpis(vport, 0); |
| |
| /* Turn off discovery timer if its running */ |
| lpfc_can_disctmo(vport); |
| } |
| |
| static void |
| lpfc_linkdown_port(struct lpfc_vport *vport) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| |
| fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, |
| "Link Down: state:x%x rtry:x%x flg:x%x", |
| vport->port_state, vport->fc_ns_retry, vport->fc_flag); |
| |
| lpfc_port_link_failure(vport); |
| |
| } |
| |
| int |
| lpfc_linkdown(struct lpfc_hba *phba) |
| { |
| struct lpfc_vport *vport = phba->pport; |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_vport **vports; |
| LPFC_MBOXQ_t *mb; |
| int i; |
| |
| if (phba->link_state == LPFC_LINK_DOWN) |
| return 0; |
| spin_lock_irq(&phba->hbalock); |
| if (phba->link_state > LPFC_LINK_DOWN) { |
| phba->link_state = LPFC_LINK_DOWN; |
| phba->pport->fc_flag &= ~FC_LBIT; |
| } |
| spin_unlock_irq(&phba->hbalock); |
| vports = lpfc_create_vport_work_array(phba); |
| if (vports != NULL) |
| for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
| /* Issue a LINK DOWN event to all nodes */ |
| lpfc_linkdown_port(vports[i]); |
| } |
| lpfc_destroy_vport_work_array(phba, vports); |
| /* Clean up any firmware default rpi's */ |
| mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (mb) { |
| lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb); |
| mb->vport = vport; |
| mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) |
| == MBX_NOT_FINISHED) { |
| mempool_free(mb, phba->mbox_mem_pool); |
| } |
| } |
| |
| /* Setup myDID for link up if we are in pt2pt mode */ |
| if (phba->pport->fc_flag & FC_PT2PT) { |
| phba->pport->fc_myDID = 0; |
| mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (mb) { |
| lpfc_config_link(phba, mb); |
| mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| mb->vport = vport; |
| if (lpfc_sli_issue_mbox(phba, mb, MBX_NOWAIT) |
| == MBX_NOT_FINISHED) { |
| mempool_free(mb, phba->mbox_mem_pool); |
| } |
| } |
| spin_lock_irq(shost->host_lock); |
| phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); |
| spin_unlock_irq(shost->host_lock); |
| } |
| |
| return 0; |
| } |
| |
| static void |
| lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) |
| { |
| struct lpfc_nodelist *ndlp; |
| |
| list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { |
| if (!NLP_CHK_NODE_ACT(ndlp)) |
| continue; |
| if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) |
| continue; |
| if (ndlp->nlp_type & NLP_FABRIC) { |
| /* On Linkup its safe to clean up the ndlp |
| * from Fabric connections. |
| */ |
| if (ndlp->nlp_DID != Fabric_DID) |
| lpfc_unreg_rpi(vport, ndlp); |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); |
| } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { |
| /* Fail outstanding IO now since device is |
| * marked for PLOGI. |
| */ |
| lpfc_unreg_rpi(vport, ndlp); |
| } |
| } |
| } |
| |
| static void |
| lpfc_linkup_port(struct lpfc_vport *vport) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_hba *phba = vport->phba; |
| |
| if ((vport->load_flag & FC_UNLOADING) != 0) |
| return; |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, |
| "Link Up: top:x%x speed:x%x flg:x%x", |
| phba->fc_topology, phba->fc_linkspeed, phba->link_flag); |
| |
| /* If NPIV is not enabled, only bring the physical port up */ |
| if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && |
| (vport != phba->pport)) |
| return; |
| |
| fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0); |
| |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | |
| FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); |
| vport->fc_flag |= FC_NDISC_ACTIVE; |
| vport->fc_ns_retry = 0; |
| spin_unlock_irq(shost->host_lock); |
| |
| if (vport->fc_flag & FC_LBIT) |
| lpfc_linkup_cleanup_nodes(vport); |
| |
| } |
| |
| static int |
| lpfc_linkup(struct lpfc_hba *phba) |
| { |
| struct lpfc_vport **vports; |
| int i; |
| |
| phba->link_state = LPFC_LINK_UP; |
| |
| /* Unblock fabric iocbs if they are blocked */ |
| clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); |
| del_timer_sync(&phba->fabric_block_timer); |
| |
| vports = lpfc_create_vport_work_array(phba); |
| if (vports != NULL) |
| for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) |
| lpfc_linkup_port(vports[i]); |
| lpfc_destroy_vport_work_array(phba, vports); |
| if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) |
| lpfc_issue_clear_la(phba, phba->pport); |
| |
| return 0; |
| } |
| |
| /* |
| * This routine handles processing a CLEAR_LA mailbox |
| * command upon completion. It is setup in the LPFC_MBOXQ |
| * as the completion routine when the command is |
| * handed off to the SLI layer. |
| */ |
| static void |
| lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| struct lpfc_vport *vport = pmb->vport; |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_sli *psli = &phba->sli; |
| MAILBOX_t *mb = &pmb->mb; |
| uint32_t control; |
| |
| /* Since we don't do discovery right now, turn these off here */ |
| psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT; |
| psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT; |
| psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT; |
| |
| /* Check for error */ |
| if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { |
| /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, |
| "0320 CLEAR_LA mbxStatus error x%x hba " |
| "state x%x\n", |
| mb->mbxStatus, vport->port_state); |
| phba->link_state = LPFC_HBA_ERROR; |
| goto out; |
| } |
| |
| if (vport->port_type == LPFC_PHYSICAL_PORT) |
| phba->link_state = LPFC_HBA_READY; |
| |
| spin_lock_irq(&phba->hbalock); |
| psli->sli_flag |= LPFC_PROCESS_LA; |
| control = readl(phba->HCregaddr); |
| control |= HC_LAINT_ENA; |
| writel(control, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| spin_unlock_irq(&phba->hbalock); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return; |
| |
| out: |
| /* Device Discovery completes */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, |
| "0225 Device Discovery completes\n"); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~FC_ABORT_DISCOVERY; |
| spin_unlock_irq(shost->host_lock); |
| |
| lpfc_can_disctmo(vport); |
| |
| /* turn on Link Attention interrupts */ |
| |
| spin_lock_irq(&phba->hbalock); |
| psli->sli_flag |= LPFC_PROCESS_LA; |
| control = readl(phba->HCregaddr); |
| control |= HC_LAINT_ENA; |
| writel(control, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| spin_unlock_irq(&phba->hbalock); |
| |
| return; |
| } |
| |
| |
| static void |
| lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| struct lpfc_vport *vport = pmb->vport; |
| |
| if (pmb->mb.mbxStatus) |
| goto out; |
| |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| if (phba->fc_topology == TOPOLOGY_LOOP && |
| vport->fc_flag & FC_PUBLIC_LOOP && |
| !(vport->fc_flag & FC_LBIT)) { |
| /* Need to wait for FAN - use discovery timer |
| * for timeout. port_state is identically |
| * LPFC_LOCAL_CFG_LINK while waiting for FAN |
| */ |
| lpfc_set_disctmo(vport); |
| return; |
| } |
| |
| /* Start discovery by sending a FLOGI. port_state is identically |
| * LPFC_FLOGI while waiting for FLOGI cmpl |
| */ |
| if (vport->port_state != LPFC_FLOGI) { |
| lpfc_initial_flogi(vport); |
| } |
| return; |
| |
| out: |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, |
| "0306 CONFIG_LINK mbxStatus error x%x " |
| "HBA state x%x\n", |
| pmb->mb.mbxStatus, vport->port_state); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| lpfc_linkdown(phba); |
| |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0200 CONFIG_LINK bad hba state x%x\n", |
| vport->port_state); |
| |
| lpfc_issue_clear_la(phba, vport); |
| return; |
| } |
| |
| static void |
| lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| MAILBOX_t *mb = &pmb->mb; |
| struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1; |
| struct lpfc_vport *vport = pmb->vport; |
| |
| |
| /* Check for error */ |
| if (mb->mbxStatus) { |
| /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, |
| "0319 READ_SPARAM mbxStatus error x%x " |
| "hba state x%x>\n", |
| mb->mbxStatus, vport->port_state); |
| lpfc_linkdown(phba); |
| goto out; |
| } |
| |
| memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, |
| sizeof (struct serv_parm)); |
| if (phba->cfg_soft_wwnn) |
| u64_to_wwn(phba->cfg_soft_wwnn, |
| vport->fc_sparam.nodeName.u.wwn); |
| if (phba->cfg_soft_wwpn) |
| u64_to_wwn(phba->cfg_soft_wwpn, |
| vport->fc_sparam.portName.u.wwn); |
| memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, |
| sizeof(vport->fc_nodename)); |
| memcpy(&vport->fc_portname, &vport->fc_sparam.portName, |
| sizeof(vport->fc_portname)); |
| if (vport->port_type == LPFC_PHYSICAL_PORT) { |
| memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); |
| memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); |
| } |
| |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return; |
| |
| out: |
| pmb->context1 = NULL; |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| lpfc_issue_clear_la(phba, vport); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return; |
| } |
| |
| static void |
| lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) |
| { |
| struct lpfc_vport *vport = phba->pport; |
| LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox; |
| int i; |
| struct lpfc_dmabuf *mp; |
| int rc; |
| |
| sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| |
| spin_lock_irq(&phba->hbalock); |
| switch (la->UlnkSpeed) { |
| case LA_1GHZ_LINK: |
| phba->fc_linkspeed = LA_1GHZ_LINK; |
| break; |
| case LA_2GHZ_LINK: |
| phba->fc_linkspeed = LA_2GHZ_LINK; |
| break; |
| case LA_4GHZ_LINK: |
| phba->fc_linkspeed = LA_4GHZ_LINK; |
| break; |
| case LA_8GHZ_LINK: |
| phba->fc_linkspeed = LA_8GHZ_LINK; |
| break; |
| default: |
| phba->fc_linkspeed = LA_UNKNW_LINK; |
| break; |
| } |
| |
| phba->fc_topology = la->topology; |
| phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; |
| |
| if (phba->fc_topology == TOPOLOGY_LOOP) { |
| phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; |
| |
| if (phba->cfg_enable_npiv) |
| lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, |
| "1309 Link Up Event npiv not supported in loop " |
| "topology\n"); |
| /* Get Loop Map information */ |
| if (la->il) |
| vport->fc_flag |= FC_LBIT; |
| |
| vport->fc_myDID = la->granted_AL_PA; |
| i = la->un.lilpBde64.tus.f.bdeSize; |
| |
| if (i == 0) { |
| phba->alpa_map[0] = 0; |
| } else { |
| if (vport->cfg_log_verbose & LOG_LINK_EVENT) { |
| int numalpa, j, k; |
| union { |
| uint8_t pamap[16]; |
| struct { |
| uint32_t wd1; |
| uint32_t wd2; |
| uint32_t wd3; |
| uint32_t wd4; |
| } pa; |
| } un; |
| numalpa = phba->alpa_map[0]; |
| j = 0; |
| while (j < numalpa) { |
| memset(un.pamap, 0, 16); |
| for (k = 1; j < numalpa; k++) { |
| un.pamap[k - 1] = |
| phba->alpa_map[j + 1]; |
| j++; |
| if (k == 16) |
| break; |
| } |
| /* Link Up Event ALPA map */ |
| lpfc_printf_log(phba, |
| KERN_WARNING, |
| LOG_LINK_EVENT, |
| "1304 Link Up Event " |
| "ALPA map Data: x%x " |
| "x%x x%x x%x\n", |
| un.pa.wd1, un.pa.wd2, |
| un.pa.wd3, un.pa.wd4); |
| } |
| } |
| } |
| } else { |
| if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { |
| if (phba->max_vpi && phba->cfg_enable_npiv && |
| (phba->sli_rev == 3)) |
| phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; |
| } |
| vport->fc_myDID = phba->fc_pref_DID; |
| vport->fc_flag |= FC_LBIT; |
| } |
| spin_unlock_irq(&phba->hbalock); |
| |
| lpfc_linkup(phba); |
| if (sparam_mbox) { |
| lpfc_read_sparam(phba, sparam_mbox, 0); |
| sparam_mbox->vport = vport; |
| sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; |
| rc = lpfc_sli_issue_mbox(phba, sparam_mbox, MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) { |
| mp = (struct lpfc_dmabuf *) sparam_mbox->context1; |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mempool_free(sparam_mbox, phba->mbox_mem_pool); |
| if (cfglink_mbox) |
| mempool_free(cfglink_mbox, phba->mbox_mem_pool); |
| goto out; |
| } |
| } |
| |
| if (cfglink_mbox) { |
| vport->port_state = LPFC_LOCAL_CFG_LINK; |
| lpfc_config_link(phba, cfglink_mbox); |
| cfglink_mbox->vport = vport; |
| cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; |
| rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, MBX_NOWAIT); |
| if (rc != MBX_NOT_FINISHED) |
| return; |
| mempool_free(cfglink_mbox, phba->mbox_mem_pool); |
| } |
| out: |
| lpfc_vport_set_state(vport, FC_VPORT_FAILED); |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, |
| "0263 Discovery Mailbox error: state: 0x%x : %p %p\n", |
| vport->port_state, sparam_mbox, cfglink_mbox); |
| lpfc_issue_clear_la(phba, vport); |
| return; |
| } |
| |
| static void |
| lpfc_enable_la(struct lpfc_hba *phba) |
| { |
| uint32_t control; |
| struct lpfc_sli *psli = &phba->sli; |
| spin_lock_irq(&phba->hbalock); |
| psli->sli_flag |= LPFC_PROCESS_LA; |
| control = readl(phba->HCregaddr); |
| control |= HC_LAINT_ENA; |
| writel(control, phba->HCregaddr); |
| readl(phba->HCregaddr); /* flush */ |
| spin_unlock_irq(&phba->hbalock); |
| } |
| |
| static void |
| lpfc_mbx_issue_link_down(struct lpfc_hba *phba) |
| { |
| lpfc_linkdown(phba); |
| lpfc_enable_la(phba); |
| /* turn on Link Attention interrupts - no CLEAR_LA needed */ |
| } |
| |
| |
| /* |
| * This routine handles processing a READ_LA mailbox |
| * command upon completion. It is setup in the LPFC_MBOXQ |
| * as the completion routine when the command is |
| * handed off to the SLI layer. |
| */ |
| void |
| lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| struct lpfc_vport *vport = pmb->vport; |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| READ_LA_VAR *la; |
| MAILBOX_t *mb = &pmb->mb; |
| struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); |
| |
| /* Unblock ELS traffic */ |
| phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT; |
| /* Check for error */ |
| if (mb->mbxStatus) { |
| lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, |
| "1307 READ_LA mbox error x%x state x%x\n", |
| mb->mbxStatus, vport->port_state); |
| lpfc_mbx_issue_link_down(phba); |
| phba->link_state = LPFC_HBA_ERROR; |
| goto lpfc_mbx_cmpl_read_la_free_mbuf; |
| } |
| |
| la = (READ_LA_VAR *) & pmb->mb.un.varReadLA; |
| |
| memcpy(&phba->alpa_map[0], mp->virt, 128); |
| |
| spin_lock_irq(shost->host_lock); |
| if (la->pb) |
| vport->fc_flag |= FC_BYPASSED_MODE; |
| else |
| vport->fc_flag &= ~FC_BYPASSED_MODE; |
| spin_unlock_irq(shost->host_lock); |
| |
| if (((phba->fc_eventTag + 1) < la->eventTag) || |
| (phba->fc_eventTag == la->eventTag)) { |
| phba->fc_stat.LinkMultiEvent++; |
| if (la->attType == AT_LINK_UP) |
| if (phba->fc_eventTag != 0) |
| lpfc_linkdown(phba); |
| } |
| |
| phba->fc_eventTag = la->eventTag; |
| if (la->mm) |
| phba->sli.sli_flag |= LPFC_MENLO_MAINT; |
| else |
| phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; |
| |
| if (la->attType == AT_LINK_UP && (!la->mm)) { |
| phba->fc_stat.LinkUp++; |
| if (phba->link_flag & LS_LOOPBACK_MODE) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, |
| "1306 Link Up Event in loop back mode " |
| "x%x received Data: x%x x%x x%x x%x\n", |
| la->eventTag, phba->fc_eventTag, |
| la->granted_AL_PA, la->UlnkSpeed, |
| phba->alpa_map[0]); |
| } else { |
| lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, |
| "1303 Link Up Event x%x received " |
| "Data: x%x x%x x%x x%x x%x x%x %d\n", |
| la->eventTag, phba->fc_eventTag, |
| la->granted_AL_PA, la->UlnkSpeed, |
| phba->alpa_map[0], |
| la->mm, la->fa, |
| phba->wait_4_mlo_maint_flg); |
| } |
| lpfc_mbx_process_link_up(phba, la); |
| } else if (la->attType == AT_LINK_DOWN) { |
| phba->fc_stat.LinkDown++; |
| if (phba->link_flag & LS_LOOPBACK_MODE) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, |
| "1308 Link Down Event in loop back mode " |
| "x%x received " |
| "Data: x%x x%x x%x\n", |
| la->eventTag, phba->fc_eventTag, |
| phba->pport->port_state, vport->fc_flag); |
| } |
| else { |
| lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, |
| "1305 Link Down Event x%x received " |
| "Data: x%x x%x x%x x%x x%x\n", |
| la->eventTag, phba->fc_eventTag, |
| phba->pport->port_state, vport->fc_flag, |
| la->mm, la->fa); |
| } |
| lpfc_mbx_issue_link_down(phba); |
| } |
| if (la->mm && la->attType == AT_LINK_UP) { |
| if (phba->link_state != LPFC_LINK_DOWN) { |
| phba->fc_stat.LinkDown++; |
| lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, |
| "1312 Link Down Event x%x received " |
| "Data: x%x x%x x%x\n", |
| la->eventTag, phba->fc_eventTag, |
| phba->pport->port_state, vport->fc_flag); |
| lpfc_mbx_issue_link_down(phba); |
| } else |
| lpfc_enable_la(phba); |
| |
| lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, |
| "1310 Menlo Maint Mode Link up Event x%x rcvd " |
| "Data: x%x x%x x%x\n", |
| la->eventTag, phba->fc_eventTag, |
| phba->pport->port_state, vport->fc_flag); |
| /* |
| * The cmnd that triggered this will be waiting for this |
| * signal. |
| */ |
| /* WAKEUP for MENLO_SET_MODE or MENLO_RESET command. */ |
| if (phba->wait_4_mlo_maint_flg) { |
| phba->wait_4_mlo_maint_flg = 0; |
| wake_up_interruptible(&phba->wait_4_mlo_m_q); |
| } |
| } |
| |
| if (la->fa) { |
| if (la->mm) |
| lpfc_issue_clear_la(phba, vport); |
| lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, |
| "1311 fa %d\n", la->fa); |
| } |
| |
| lpfc_mbx_cmpl_read_la_free_mbuf: |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return; |
| } |
| |
| /* |
| * This routine handles processing a REG_LOGIN mailbox |
| * command upon completion. It is setup in the LPFC_MBOXQ |
| * as the completion routine when the command is |
| * handed off to the SLI layer. |
| */ |
| void |
| lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| struct lpfc_vport *vport = pmb->vport; |
| struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); |
| struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; |
| |
| pmb->context1 = NULL; |
| |
| /* Good status, call state machine */ |
| lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| /* decrement the node reference count held for this callback |
| * function. |
| */ |
| lpfc_nlp_put(ndlp); |
| |
| return; |
| } |
| |
| static void |
| lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| MAILBOX_t *mb = &pmb->mb; |
| struct lpfc_vport *vport = pmb->vport; |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| |
| switch (mb->mbxStatus) { |
| case 0x0011: |
| case 0x0020: |
| case 0x9700: |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, |
| "0911 cmpl_unreg_vpi, mb status = 0x%x\n", |
| mb->mbxStatus); |
| break; |
| } |
| vport->unreg_vpi_cmpl = VPORT_OK; |
| mempool_free(pmb, phba->mbox_mem_pool); |
| /* |
| * This shost reference might have been taken at the beginning of |
| * lpfc_vport_delete() |
| */ |
| if (vport->load_flag & FC_UNLOADING) |
| scsi_host_put(shost); |
| } |
| |
| int |
| lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| LPFC_MBOXQ_t *mbox; |
| int rc; |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!mbox) |
| return 1; |
| |
| lpfc_unreg_vpi(phba, vport->vpi, mbox); |
| mbox->vport = vport; |
| mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) { |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, |
| "1800 Could not issue unreg_vpi\n"); |
| mempool_free(mbox, phba->mbox_mem_pool); |
| vport->unreg_vpi_cmpl = VPORT_ERROR; |
| return rc; |
| } |
| return 0; |
| } |
| |
| static void |
| lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| struct lpfc_vport *vport = pmb->vport; |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| MAILBOX_t *mb = &pmb->mb; |
| |
| switch (mb->mbxStatus) { |
| case 0x0011: |
| case 0x9601: |
| case 0x9602: |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, |
| "0912 cmpl_reg_vpi, mb status = 0x%x\n", |
| mb->mbxStatus); |
| lpfc_vport_set_state(vport, FC_VPORT_FAILED); |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); |
| spin_unlock_irq(shost->host_lock); |
| vport->fc_myDID = 0; |
| goto out; |
| } |
| |
| vport->num_disc_nodes = 0; |
| /* go thru NPR list and issue ELS PLOGIs */ |
| if (vport->fc_npr_cnt) |
| lpfc_els_disc_plogi(vport); |
| |
| if (!vport->num_disc_nodes) { |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~FC_NDISC_ACTIVE; |
| spin_unlock_irq(shost->host_lock); |
| lpfc_can_disctmo(vport); |
| } |
| vport->port_state = LPFC_VPORT_READY; |
| |
| out: |
| mempool_free(pmb, phba->mbox_mem_pool); |
| return; |
| } |
| |
| /* |
| * This routine handles processing a Fabric REG_LOGIN mailbox |
| * command upon completion. It is setup in the LPFC_MBOXQ |
| * as the completion routine when the command is |
| * handed off to the SLI layer. |
| */ |
| void |
| lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| struct lpfc_vport *vport = pmb->vport; |
| MAILBOX_t *mb = &pmb->mb; |
| struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); |
| struct lpfc_nodelist *ndlp; |
| struct lpfc_vport **vports; |
| int i; |
| |
| ndlp = (struct lpfc_nodelist *) pmb->context2; |
| pmb->context1 = NULL; |
| pmb->context2 = NULL; |
| if (mb->mbxStatus) { |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| if (phba->fc_topology == TOPOLOGY_LOOP) { |
| /* FLOGI failed, use loop map to make discovery list */ |
| lpfc_disc_list_loopmap(vport); |
| |
| /* Start discovery */ |
| lpfc_disc_start(vport); |
| /* Decrement the reference count to ndlp after the |
| * reference to the ndlp are done. |
| */ |
| lpfc_nlp_put(ndlp); |
| return; |
| } |
| |
| lpfc_vport_set_state(vport, FC_VPORT_FAILED); |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, |
| "0258 Register Fabric login error: 0x%x\n", |
| mb->mbxStatus); |
| /* Decrement the reference count to ndlp after the reference |
| * to the ndlp are done. |
| */ |
| lpfc_nlp_put(ndlp); |
| return; |
| } |
| |
| ndlp->nlp_rpi = mb->un.varWords[0]; |
| ndlp->nlp_type |= NLP_FABRIC; |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); |
| |
| if (vport->port_state == LPFC_FABRIC_CFG_LINK) { |
| vports = lpfc_create_vport_work_array(phba); |
| if (vports != NULL) |
| for(i = 0; |
| i <= phba->max_vpi && vports[i] != NULL; |
| i++) { |
| if (vports[i]->port_type == LPFC_PHYSICAL_PORT) |
| continue; |
| if (phba->fc_topology == TOPOLOGY_LOOP) { |
| lpfc_vport_set_state(vports[i], |
| FC_VPORT_LINKDOWN); |
| continue; |
| } |
| if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) |
| lpfc_initial_fdisc(vports[i]); |
| else { |
| lpfc_vport_set_state(vports[i], |
| FC_VPORT_NO_FABRIC_SUPP); |
| lpfc_printf_vlog(vport, KERN_ERR, |
| LOG_ELS, |
| "0259 No NPIV " |
| "Fabric support\n"); |
| } |
| } |
| lpfc_destroy_vport_work_array(phba, vports); |
| lpfc_do_scr_ns_plogi(phba, vport); |
| } |
| |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| /* Drop the reference count from the mbox at the end after |
| * all the current reference to the ndlp have been done. |
| */ |
| lpfc_nlp_put(ndlp); |
| return; |
| } |
| |
| /* |
| * This routine handles processing a NameServer REG_LOGIN mailbox |
| * command upon completion. It is setup in the LPFC_MBOXQ |
| * as the completion routine when the command is |
| * handed off to the SLI layer. |
| */ |
| void |
| lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| MAILBOX_t *mb = &pmb->mb; |
| struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); |
| struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; |
| struct lpfc_vport *vport = pmb->vport; |
| |
| if (mb->mbxStatus) { |
| out: |
| /* decrement the node reference count held for this |
| * callback function. |
| */ |
| lpfc_nlp_put(ndlp); |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| /* If no other thread is using the ndlp, free it */ |
| lpfc_nlp_not_used(ndlp); |
| |
| if (phba->fc_topology == TOPOLOGY_LOOP) { |
| /* |
| * RegLogin failed, use loop map to make discovery |
| * list |
| */ |
| lpfc_disc_list_loopmap(vport); |
| |
| /* Start discovery */ |
| lpfc_disc_start(vport); |
| return; |
| } |
| lpfc_vport_set_state(vport, FC_VPORT_FAILED); |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
| "0260 Register NameServer error: 0x%x\n", |
| mb->mbxStatus); |
| return; |
| } |
| |
| pmb->context1 = NULL; |
| |
| ndlp->nlp_rpi = mb->un.varWords[0]; |
| ndlp->nlp_type |= NLP_FABRIC; |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); |
| |
| if (vport->port_state < LPFC_VPORT_READY) { |
| /* Link up discovery requires Fabric registration. */ |
| lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */ |
| lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); |
| lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); |
| lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); |
| lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); |
| |
| /* Issue SCR just before NameServer GID_FT Query */ |
| lpfc_issue_els_scr(vport, SCR_DID, 0); |
| } |
| |
| vport->fc_ns_retry = 0; |
| /* Good status, issue CT Request to NameServer */ |
| if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) { |
| /* Cannot issue NameServer Query, so finish up discovery */ |
| goto out; |
| } |
| |
| /* decrement the node reference count held for this |
| * callback function. |
| */ |
| lpfc_nlp_put(ndlp); |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| return; |
| } |
| |
| static void |
| lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct fc_rport *rport; |
| struct lpfc_rport_data *rdata; |
| struct fc_rport_identifiers rport_ids; |
| struct lpfc_hba *phba = vport->phba; |
| |
| /* Remote port has reappeared. Re-register w/ FC transport */ |
| rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); |
| rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); |
| rport_ids.port_id = ndlp->nlp_DID; |
| rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; |
| |
| /* |
| * We leave our node pointer in rport->dd_data when we unregister a |
| * FCP target port. But fc_remote_port_add zeros the space to which |
| * rport->dd_data points. So, if we're reusing a previously |
| * registered port, drop the reference that we took the last time we |
| * registered the port. |
| */ |
| if (ndlp->rport && ndlp->rport->dd_data && |
| ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) |
| lpfc_nlp_put(ndlp); |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, |
| "rport add: did:x%x flg:x%x type x%x", |
| ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); |
| |
| ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); |
| if (!rport || !get_device(&rport->dev)) { |
| dev_printk(KERN_WARNING, &phba->pcidev->dev, |
| "Warning: fc_remote_port_add failed\n"); |
| return; |
| } |
| |
| /* initialize static port data */ |
| rport->maxframe_size = ndlp->nlp_maxframe; |
| rport->supported_classes = ndlp->nlp_class_sup; |
| rdata = rport->dd_data; |
| rdata->pnode = lpfc_nlp_get(ndlp); |
| |
| if (ndlp->nlp_type & NLP_FCP_TARGET) |
| rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; |
| if (ndlp->nlp_type & NLP_FCP_INITIATOR) |
| rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; |
| |
| |
| if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) |
| fc_remote_port_rolechg(rport, rport_ids.roles); |
| |
| if ((rport->scsi_target_id != -1) && |
| (rport->scsi_target_id < LPFC_MAX_TARGET)) { |
| ndlp->nlp_sid = rport->scsi_target_id; |
| } |
| return; |
| } |
| |
| static void |
| lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) |
| { |
| struct fc_rport *rport = ndlp->rport; |
| |
| lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, |
| "rport delete: did:x%x flg:x%x type x%x", |
| ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); |
| |
| fc_remote_port_delete(rport); |
| |
| return; |
| } |
| |
| static void |
| lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| |
| spin_lock_irq(shost->host_lock); |
| switch (state) { |
| case NLP_STE_UNUSED_NODE: |
| vport->fc_unused_cnt += count; |
| break; |
| case NLP_STE_PLOGI_ISSUE: |
| vport->fc_plogi_cnt += count; |
| break; |
| case NLP_STE_ADISC_ISSUE: |
| vport->fc_adisc_cnt += count; |
| break; |
| case NLP_STE_REG_LOGIN_ISSUE: |
| vport->fc_reglogin_cnt += count; |
| break; |
| case NLP_STE_PRLI_ISSUE: |
| vport->fc_prli_cnt += count; |
| break; |
| case NLP_STE_UNMAPPED_NODE: |
| vport->fc_unmap_cnt += count; |
| break; |
| case NLP_STE_MAPPED_NODE: |
| vport->fc_map_cnt += count; |
| break; |
| case NLP_STE_NPR_NODE: |
| vport->fc_npr_cnt += count; |
| break; |
| } |
| spin_unlock_irq(shost->host_lock); |
| } |
| |
| static void |
| lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, |
| int old_state, int new_state) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| |
| if (new_state == NLP_STE_UNMAPPED_NODE) { |
| ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); |
| ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; |
| ndlp->nlp_type |= NLP_FC_NODE; |
| } |
| if (new_state == NLP_STE_MAPPED_NODE) |
| ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; |
| if (new_state == NLP_STE_NPR_NODE) |
| ndlp->nlp_flag &= ~NLP_RCV_PLOGI; |
| |
| /* Transport interface */ |
| if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE || |
| old_state == NLP_STE_UNMAPPED_NODE)) { |
| vport->phba->nport_event_cnt++; |
| lpfc_unregister_remote_port(ndlp); |
| } |
| |
| if (new_state == NLP_STE_MAPPED_NODE || |
| new_state == NLP_STE_UNMAPPED_NODE) { |
| vport->phba->nport_event_cnt++; |
| /* |
| * Tell the fc transport about the port, if we haven't |
| * already. If we have, and it's a scsi entity, be |
| * sure to unblock any attached scsi devices |
| */ |
| lpfc_register_remote_port(vport, ndlp); |
| } |
| /* |
| * if we added to Mapped list, but the remote port |
| * registration failed or assigned a target id outside |
| * our presentable range - move the node to the |
| * Unmapped List |
| */ |
| if (new_state == NLP_STE_MAPPED_NODE && |
| (!ndlp->rport || |
| ndlp->rport->scsi_target_id == -1 || |
| ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { |
| spin_lock_irq(shost->host_lock); |
| ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; |
| spin_unlock_irq(shost->host_lock); |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); |
| } |
| } |
| |
| static char * |
| lpfc_nlp_state_name(char *buffer, size_t size, int state) |
| { |
| static char *states[] = { |
| [NLP_STE_UNUSED_NODE] = "UNUSED", |
| [NLP_STE_PLOGI_ISSUE] = "PLOGI", |
| [NLP_STE_ADISC_ISSUE] = "ADISC", |
| [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", |
| [NLP_STE_PRLI_ISSUE] = "PRLI", |
| [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", |
| [NLP_STE_MAPPED_NODE] = "MAPPED", |
| [NLP_STE_NPR_NODE] = "NPR", |
| }; |
| |
| if (state < NLP_STE_MAX_STATE && states[state]) |
| strlcpy(buffer, states[state], size); |
| else |
| snprintf(buffer, size, "unknown (%d)", state); |
| return buffer; |
| } |
| |
| void |
| lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, |
| int state) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| int old_state = ndlp->nlp_state; |
| char name1[16], name2[16]; |
| |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, |
| "0904 NPort state transition x%06x, %s -> %s\n", |
| ndlp->nlp_DID, |
| lpfc_nlp_state_name(name1, sizeof(name1), old_state), |
| lpfc_nlp_state_name(name2, sizeof(name2), state)); |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, |
| "node statechg did:x%x old:%d ste:%d", |
| ndlp->nlp_DID, old_state, state); |
| |
| if (old_state == NLP_STE_NPR_NODE && |
| state != NLP_STE_NPR_NODE) |
| lpfc_cancel_retry_delay_tmo(vport, ndlp); |
| if (old_state == NLP_STE_UNMAPPED_NODE) { |
| ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; |
| ndlp->nlp_type &= ~NLP_FC_NODE; |
| } |
| |
| if (list_empty(&ndlp->nlp_listp)) { |
| spin_lock_irq(shost->host_lock); |
| list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); |
| spin_unlock_irq(shost->host_lock); |
| } else if (old_state) |
| lpfc_nlp_counters(vport, old_state, -1); |
| |
| ndlp->nlp_state = state; |
| lpfc_nlp_counters(vport, state, 1); |
| lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); |
| } |
| |
| void |
| lpfc_enqueue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| |
| if (list_empty(&ndlp->nlp_listp)) { |
| spin_lock_irq(shost->host_lock); |
| list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); |
| spin_unlock_irq(shost->host_lock); |
| } |
| } |
| |
| void |
| lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| |
| lpfc_cancel_retry_delay_tmo(vport, ndlp); |
| if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) |
| lpfc_nlp_counters(vport, ndlp->nlp_state, -1); |
| spin_lock_irq(shost->host_lock); |
| list_del_init(&ndlp->nlp_listp); |
| spin_unlock_irq(shost->host_lock); |
| lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, |
| NLP_STE_UNUSED_NODE); |
| } |
| |
| static void |
| lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) |
| { |
| lpfc_cancel_retry_delay_tmo(vport, ndlp); |
| if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) |
| lpfc_nlp_counters(vport, ndlp->nlp_state, -1); |
| lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, |
| NLP_STE_UNUSED_NODE); |
| } |
| |
| struct lpfc_nodelist * |
| lpfc_enable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, |
| int state) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| uint32_t did; |
| unsigned long flags; |
| |
| if (!ndlp) |
| return NULL; |
| |
| spin_lock_irqsave(&phba->ndlp_lock, flags); |
| /* The ndlp should not be in memory free mode */ |
| if (NLP_CHK_FREE_REQ(ndlp)) { |
| spin_unlock_irqrestore(&phba->ndlp_lock, flags); |
| lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, |
| "0277 lpfc_enable_node: ndlp:x%p " |
| "usgmap:x%x refcnt:%d\n", |
| (void *)ndlp, ndlp->nlp_usg_map, |
| atomic_read(&ndlp->kref.refcount)); |
| return NULL; |
| } |
| /* The ndlp should not already be in active mode */ |
| if (NLP_CHK_NODE_ACT(ndlp)) { |
| spin_unlock_irqrestore(&phba->ndlp_lock, flags); |
| lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, |
| "0278 lpfc_enable_node: ndlp:x%p " |
| "usgmap:x%x refcnt:%d\n", |
| (void *)ndlp, ndlp->nlp_usg_map, |
| atomic_read(&ndlp->kref.refcount)); |
| return NULL; |
| } |
| |
| /* Keep the original DID */ |
| did = ndlp->nlp_DID; |
| |
| /* re-initialize ndlp except of ndlp linked list pointer */ |
| memset((((char *)ndlp) + sizeof (struct list_head)), 0, |
| sizeof (struct lpfc_nodelist) - sizeof (struct list_head)); |
| INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); |
| INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); |
| init_timer(&ndlp->nlp_delayfunc); |
| ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; |
| ndlp->nlp_delayfunc.data = (unsigned long)ndlp; |
| ndlp->nlp_DID = did; |
| ndlp->vport = vport; |
| ndlp->nlp_sid = NLP_NO_SID; |
| /* ndlp management re-initialize */ |
| kref_init(&ndlp->kref); |
| NLP_INT_NODE_ACT(ndlp); |
| |
| spin_unlock_irqrestore(&phba->ndlp_lock, flags); |
| |
| if (state != NLP_STE_UNUSED_NODE) |
| lpfc_nlp_set_state(vport, ndlp, state); |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, |
| "node enable: did:x%x", |
| ndlp->nlp_DID, 0, 0); |
| return ndlp; |
| } |
| |
| void |
| lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) |
| { |
| /* |
| * Use of lpfc_drop_node and UNUSED list: lpfc_drop_node should |
| * be used if we wish to issue the "last" lpfc_nlp_put() to remove |
| * the ndlp from the vport. The ndlp marked as UNUSED on the list |
| * until ALL other outstanding threads have completed. We check |
| * that the ndlp not already in the UNUSED state before we proceed. |
| */ |
| if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) |
| return; |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); |
| lpfc_nlp_put(ndlp); |
| return; |
| } |
| |
| /* |
| * Start / ReStart rescue timer for Discovery / RSCN handling |
| */ |
| void |
| lpfc_set_disctmo(struct lpfc_vport *vport) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_hba *phba = vport->phba; |
| uint32_t tmo; |
| |
| if (vport->port_state == LPFC_LOCAL_CFG_LINK) { |
| /* For FAN, timeout should be greater then edtov */ |
| tmo = (((phba->fc_edtov + 999) / 1000) + 1); |
| } else { |
| /* Normal discovery timeout should be > then ELS/CT timeout |
| * FC spec states we need 3 * ratov for CT requests |
| */ |
| tmo = ((phba->fc_ratov * 3) + 3); |
| } |
| |
| |
| if (!timer_pending(&vport->fc_disctmo)) { |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, |
| "set disc timer: tmo:x%x state:x%x flg:x%x", |
| tmo, vport->port_state, vport->fc_flag); |
| } |
| |
| mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo); |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag |= FC_DISC_TMO; |
| spin_unlock_irq(shost->host_lock); |
| |
| /* Start Discovery Timer state <hba_state> */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, |
| "0247 Start Discovery Timer state x%x " |
| "Data: x%x x%lx x%x x%x\n", |
| vport->port_state, tmo, |
| (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, |
| vport->fc_adisc_cnt); |
| |
| return; |
| } |
| |
| /* |
| * Cancel rescue timer for Discovery / RSCN handling |
| */ |
| int |
| lpfc_can_disctmo(struct lpfc_vport *vport) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| unsigned long iflags; |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, |
| "can disc timer: state:x%x rtry:x%x flg:x%x", |
| vport->port_state, vport->fc_ns_retry, vport->fc_flag); |
| |
| /* Turn off discovery timer if its running */ |
| if (vport->fc_flag & FC_DISC_TMO) { |
| spin_lock_irqsave(shost->host_lock, iflags); |
| vport->fc_flag &= ~FC_DISC_TMO; |
| spin_unlock_irqrestore(shost->host_lock, iflags); |
| del_timer_sync(&vport->fc_disctmo); |
| spin_lock_irqsave(&vport->work_port_lock, iflags); |
| vport->work_port_events &= ~WORKER_DISC_TMO; |
| spin_unlock_irqrestore(&vport->work_port_lock, iflags); |
| } |
| |
| /* Cancel Discovery Timer state <hba_state> */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, |
| "0248 Cancel Discovery Timer state x%x " |
| "Data: x%x x%x x%x\n", |
| vport->port_state, vport->fc_flag, |
| vport->fc_plogi_cnt, vport->fc_adisc_cnt); |
| return 0; |
| } |
| |
| /* |
| * Check specified ring for outstanding IOCB on the SLI queue |
| * Return true if iocb matches the specified nport |
| */ |
| int |
| lpfc_check_sli_ndlp(struct lpfc_hba *phba, |
| struct lpfc_sli_ring *pring, |
| struct lpfc_iocbq *iocb, |
| struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_sli *psli = &phba->sli; |
| IOCB_t *icmd = &iocb->iocb; |
| struct lpfc_vport *vport = ndlp->vport; |
| |
| if (iocb->vport != vport) |
| return 0; |
| |
| if (pring->ringno == LPFC_ELS_RING) { |
| switch (icmd->ulpCommand) { |
| case CMD_GEN_REQUEST64_CR: |
| if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) |
| return 1; |
| case CMD_ELS_REQUEST64_CR: |
| if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) |
| return 1; |
| case CMD_XMIT_ELS_RSP64_CX: |
| if (iocb->context1 == (uint8_t *) ndlp) |
| return 1; |
| } |
| } else if (pring->ringno == psli->extra_ring) { |
| |
| } else if (pring->ringno == psli->fcp_ring) { |
| /* Skip match check if waiting to relogin to FCP target */ |
| if ((ndlp->nlp_type & NLP_FCP_TARGET) && |
| (ndlp->nlp_flag & NLP_DELAY_TMO)) { |
| return 0; |
| } |
| if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { |
| return 1; |
| } |
| } else if (pring->ringno == psli->next_ring) { |
| |
| } |
| return 0; |
| } |
| |
| /* |
| * Free resources / clean up outstanding I/Os |
| * associated with nlp_rpi in the LPFC_NODELIST entry. |
| */ |
| static int |
| lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) |
| { |
| LIST_HEAD(completions); |
| struct lpfc_sli *psli; |
| struct lpfc_sli_ring *pring; |
| struct lpfc_iocbq *iocb, *next_iocb; |
| IOCB_t *icmd; |
| uint32_t rpi, i; |
| |
| lpfc_fabric_abort_nport(ndlp); |
| |
| /* |
| * Everything that matches on txcmplq will be returned |
| * by firmware with a no rpi error. |
| */ |
| psli = &phba->sli; |
| rpi = ndlp->nlp_rpi; |
| if (rpi) { |
| /* Now process each ring */ |
| for (i = 0; i < psli->num_rings; i++) { |
| pring = &psli->ring[i]; |
| |
| spin_lock_irq(&phba->hbalock); |
| list_for_each_entry_safe(iocb, next_iocb, &pring->txq, |
| list) { |
| /* |
| * Check to see if iocb matches the nport we are |
| * looking for |
| */ |
| if ((lpfc_check_sli_ndlp(phba, pring, iocb, |
| ndlp))) { |
| /* It matches, so deque and call compl |
| with an error */ |
| list_move_tail(&iocb->list, |
| &completions); |
| pring->txq_cnt--; |
| } |
| } |
| spin_unlock_irq(&phba->hbalock); |
| } |
| } |
| |
| while (!list_empty(&completions)) { |
| iocb = list_get_first(&completions, struct lpfc_iocbq, list); |
| list_del_init(&iocb->list); |
| |
| if (!iocb->iocb_cmpl) |
| lpfc_sli_release_iocbq(phba, iocb); |
| else { |
| icmd = &iocb->iocb; |
| icmd->ulpStatus = IOSTAT_LOCAL_REJECT; |
| icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; |
| (iocb->iocb_cmpl)(phba, iocb, iocb); |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Free rpi associated with LPFC_NODELIST entry. |
| * This routine is called from lpfc_freenode(), when we are removing |
| * a LPFC_NODELIST entry. It is also called if the driver initiates a |
| * LOGO that completes successfully, and we are waiting to PLOGI back |
| * to the remote NPort. In addition, it is called after we receive |
| * and unsolicated ELS cmd, send back a rsp, the rsp completes and |
| * we are waiting to PLOGI back to the remote NPort. |
| */ |
| int |
| lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| LPFC_MBOXQ_t *mbox; |
| int rc; |
| |
| if (ndlp->nlp_rpi) { |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (mbox) { |
| lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox); |
| mbox->vport = vport; |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) |
| mempool_free(mbox, phba->mbox_mem_pool); |
| } |
| lpfc_no_rpi(phba, ndlp); |
| ndlp->nlp_rpi = 0; |
| return 1; |
| } |
| return 0; |
| } |
| |
| void |
| lpfc_unreg_all_rpis(struct lpfc_vport *vport) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| LPFC_MBOXQ_t *mbox; |
| int rc; |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (mbox) { |
| lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox); |
| mbox->vport = vport; |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| mbox->context1 = NULL; |
| rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); |
| if (rc == MBX_NOT_FINISHED) { |
| mempool_free(mbox, phba->mbox_mem_pool); |
| } |
| } |
| } |
| |
| void |
| lpfc_unreg_default_rpis(struct lpfc_vport *vport) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| LPFC_MBOXQ_t *mbox; |
| int rc; |
| |
| mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (mbox) { |
| lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox); |
| mbox->vport = vport; |
| mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| mbox->context1 = NULL; |
| rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); |
| if (rc == MBX_NOT_FINISHED) { |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, |
| "1815 Could not issue " |
| "unreg_did (default rpis)\n"); |
| mempool_free(mbox, phba->mbox_mem_pool); |
| } |
| } |
| } |
| |
| /* |
| * Free resources associated with LPFC_NODELIST entry |
| * so it can be freed. |
| */ |
| static int |
| lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_hba *phba = vport->phba; |
| LPFC_MBOXQ_t *mb, *nextmb; |
| struct lpfc_dmabuf *mp; |
| |
| /* Cleanup node for NPort <nlp_DID> */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, |
| "0900 Cleanup node for NPort x%x " |
| "Data: x%x x%x x%x\n", |
| ndlp->nlp_DID, ndlp->nlp_flag, |
| ndlp->nlp_state, ndlp->nlp_rpi); |
| if (NLP_CHK_FREE_REQ(ndlp)) { |
| lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, |
| "0280 lpfc_cleanup_node: ndlp:x%p " |
| "usgmap:x%x refcnt:%d\n", |
| (void *)ndlp, ndlp->nlp_usg_map, |
| atomic_read(&ndlp->kref.refcount)); |
| lpfc_dequeue_node(vport, ndlp); |
| } else { |
| lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE, |
| "0281 lpfc_cleanup_node: ndlp:x%p " |
| "usgmap:x%x refcnt:%d\n", |
| (void *)ndlp, ndlp->nlp_usg_map, |
| atomic_read(&ndlp->kref.refcount)); |
| lpfc_disable_node(vport, ndlp); |
| } |
| |
| /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ |
| if ((mb = phba->sli.mbox_active)) { |
| if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && |
| (ndlp == (struct lpfc_nodelist *) mb->context2)) { |
| mb->context2 = NULL; |
| mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| } |
| } |
| |
| spin_lock_irq(&phba->hbalock); |
| list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { |
| if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && |
| (ndlp == (struct lpfc_nodelist *) mb->context2)) { |
| mp = (struct lpfc_dmabuf *) (mb->context1); |
| if (mp) { |
| __lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| } |
| list_del(&mb->list); |
| mempool_free(mb, phba->mbox_mem_pool); |
| /* We shall not invoke the lpfc_nlp_put to decrement |
| * the ndlp reference count as we are in the process |
| * of lpfc_nlp_release. |
| */ |
| } |
| } |
| spin_unlock_irq(&phba->hbalock); |
| |
| lpfc_els_abort(phba, ndlp); |
| |
| spin_lock_irq(shost->host_lock); |
| ndlp->nlp_flag &= ~NLP_DELAY_TMO; |
| spin_unlock_irq(shost->host_lock); |
| |
| ndlp->nlp_last_elscmd = 0; |
| del_timer_sync(&ndlp->nlp_delayfunc); |
| |
| list_del_init(&ndlp->els_retry_evt.evt_listp); |
| list_del_init(&ndlp->dev_loss_evt.evt_listp); |
| |
| lpfc_unreg_rpi(vport, ndlp); |
| |
| return 0; |
| } |
| |
| /* |
| * Check to see if we can free the nlp back to the freelist. |
| * If we are in the middle of using the nlp in the discovery state |
| * machine, defer the free till we reach the end of the state machine. |
| */ |
| static void |
| lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_rport_data *rdata; |
| LPFC_MBOXQ_t *mbox; |
| int rc; |
| |
| lpfc_cancel_retry_delay_tmo(vport, ndlp); |
| if (ndlp->nlp_flag & NLP_DEFER_RM && !ndlp->nlp_rpi) { |
| /* For this case we need to cleanup the default rpi |
| * allocated by the firmware. |
| */ |
| if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) |
| != NULL) { |
| rc = lpfc_reg_login(phba, vport->vpi, ndlp->nlp_DID, |
| (uint8_t *) &vport->fc_sparam, mbox, 0); |
| if (rc) { |
| mempool_free(mbox, phba->mbox_mem_pool); |
| } |
| else { |
| mbox->mbox_flag |= LPFC_MBX_IMED_UNREG; |
| mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; |
| mbox->vport = vport; |
| mbox->context2 = NULL; |
| rc =lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) { |
| mempool_free(mbox, phba->mbox_mem_pool); |
| } |
| } |
| } |
| } |
| lpfc_cleanup_node(vport, ndlp); |
| |
| /* |
| * We can get here with a non-NULL ndlp->rport because when we |
| * unregister a rport we don't break the rport/node linkage. So if we |
| * do, make sure we don't leaving any dangling pointers behind. |
| */ |
| if (ndlp->rport) { |
| rdata = ndlp->rport->dd_data; |
| rdata->pnode = NULL; |
| ndlp->rport = NULL; |
| } |
| } |
| |
| static int |
| lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, |
| uint32_t did) |
| { |
| D_ID mydid, ndlpdid, matchdid; |
| |
| if (did == Bcast_DID) |
| return 0; |
| |
| /* First check for Direct match */ |
| if (ndlp->nlp_DID == did) |
| return 1; |
| |
| /* Next check for area/domain identically equals 0 match */ |
| mydid.un.word = vport->fc_myDID; |
| if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { |
| return 0; |
| } |
| |
| matchdid.un.word = did; |
| ndlpdid.un.word = ndlp->nlp_DID; |
| if (matchdid.un.b.id == ndlpdid.un.b.id) { |
| if ((mydid.un.b.domain == matchdid.un.b.domain) && |
| (mydid.un.b.area == matchdid.un.b.area)) { |
| if ((ndlpdid.un.b.domain == 0) && |
| (ndlpdid.un.b.area == 0)) { |
| if (ndlpdid.un.b.id) |
| return 1; |
| } |
| return 0; |
| } |
| |
| matchdid.un.word = ndlp->nlp_DID; |
| if ((mydid.un.b.domain == ndlpdid.un.b.domain) && |
| (mydid.un.b.area == ndlpdid.un.b.area)) { |
| if ((matchdid.un.b.domain == 0) && |
| (matchdid.un.b.area == 0)) { |
| if (matchdid.un.b.id) |
| return 1; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| /* Search for a nodelist entry */ |
| static struct lpfc_nodelist * |
| __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) |
| { |
| struct lpfc_nodelist *ndlp; |
| uint32_t data1; |
| |
| list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { |
| if (lpfc_matchdid(vport, ndlp, did)) { |
| data1 = (((uint32_t) ndlp->nlp_state << 24) | |
| ((uint32_t) ndlp->nlp_xri << 16) | |
| ((uint32_t) ndlp->nlp_type << 8) | |
| ((uint32_t) ndlp->nlp_rpi & 0xff)); |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, |
| "0929 FIND node DID " |
| "Data: x%p x%x x%x x%x\n", |
| ndlp, ndlp->nlp_DID, |
| ndlp->nlp_flag, data1); |
| return ndlp; |
| } |
| } |
| |
| /* FIND node did <did> NOT FOUND */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, |
| "0932 FIND node did x%x NOT FOUND.\n", did); |
| return NULL; |
| } |
| |
| struct lpfc_nodelist * |
| lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_nodelist *ndlp; |
| |
| spin_lock_irq(shost->host_lock); |
| ndlp = __lpfc_findnode_did(vport, did); |
| spin_unlock_irq(shost->host_lock); |
| return ndlp; |
| } |
| |
| struct lpfc_nodelist * |
| lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_nodelist *ndlp; |
| |
| ndlp = lpfc_findnode_did(vport, did); |
| if (!ndlp) { |
| if ((vport->fc_flag & FC_RSCN_MODE) != 0 && |
| lpfc_rscn_payload_check(vport, did) == 0) |
| return NULL; |
| ndlp = (struct lpfc_nodelist *) |
| mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); |
| if (!ndlp) |
| return NULL; |
| lpfc_nlp_init(vport, ndlp, did); |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); |
| spin_lock_irq(shost->host_lock); |
| ndlp->nlp_flag |= NLP_NPR_2B_DISC; |
| spin_unlock_irq(shost->host_lock); |
| return ndlp; |
| } else if (!NLP_CHK_NODE_ACT(ndlp)) { |
| ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_NPR_NODE); |
| if (!ndlp) |
| return NULL; |
| spin_lock_irq(shost->host_lock); |
| ndlp->nlp_flag |= NLP_NPR_2B_DISC; |
| spin_unlock_irq(shost->host_lock); |
| return ndlp; |
| } |
| |
| if ((vport->fc_flag & FC_RSCN_MODE) && |
| !(vport->fc_flag & FC_NDISC_ACTIVE)) { |
| if (lpfc_rscn_payload_check(vport, did)) { |
| /* If we've already recieved a PLOGI from this NPort |
| * we don't need to try to discover it again. |
| */ |
| if (ndlp->nlp_flag & NLP_RCV_PLOGI) |
| return NULL; |
| |
| spin_lock_irq(shost->host_lock); |
| ndlp->nlp_flag |= NLP_NPR_2B_DISC; |
| spin_unlock_irq(shost->host_lock); |
| |
| /* Since this node is marked for discovery, |
| * delay timeout is not needed. |
| */ |
| lpfc_cancel_retry_delay_tmo(vport, ndlp); |
| } else |
| ndlp = NULL; |
| } else { |
| /* If we've already recieved a PLOGI from this NPort, |
| * or we are already in the process of discovery on it, |
| * we don't need to try to discover it again. |
| */ |
| if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || |
| ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || |
| ndlp->nlp_flag & NLP_RCV_PLOGI) |
| return NULL; |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); |
| spin_lock_irq(shost->host_lock); |
| ndlp->nlp_flag |= NLP_NPR_2B_DISC; |
| spin_unlock_irq(shost->host_lock); |
| } |
| return ndlp; |
| } |
| |
| /* Build a list of nodes to discover based on the loopmap */ |
| void |
| lpfc_disc_list_loopmap(struct lpfc_vport *vport) |
| { |
| struct lpfc_hba *phba = vport->phba; |
| int j; |
| uint32_t alpa, index; |
| |
| if (!lpfc_is_link_up(phba)) |
| return; |
| |
| if (phba->fc_topology != TOPOLOGY_LOOP) |
| return; |
| |
| /* Check for loop map present or not */ |
| if (phba->alpa_map[0]) { |
| for (j = 1; j <= phba->alpa_map[0]; j++) { |
| alpa = phba->alpa_map[j]; |
| if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) |
| continue; |
| lpfc_setup_disc_node(vport, alpa); |
| } |
| } else { |
| /* No alpamap, so try all alpa's */ |
| for (j = 0; j < FC_MAXLOOP; j++) { |
| /* If cfg_scan_down is set, start from highest |
| * ALPA (0xef) to lowest (0x1). |
| */ |
| if (vport->cfg_scan_down) |
| index = j; |
| else |
| index = FC_MAXLOOP - j - 1; |
| alpa = lpfcAlpaArray[index]; |
| if ((vport->fc_myDID & 0xff) == alpa) |
| continue; |
| lpfc_setup_disc_node(vport, alpa); |
| } |
| } |
| return; |
| } |
| |
| void |
| lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) |
| { |
| LPFC_MBOXQ_t *mbox; |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring]; |
| struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring]; |
| struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring]; |
| int rc; |
| |
| /* |
| * if it's not a physical port or if we already send |
| * clear_la then don't send it. |
| */ |
| if ((phba->link_state >= LPFC_CLEAR_LA) || |
| (vport->port_type != LPFC_PHYSICAL_PORT)) |
| return; |
| |
| /* Link up discovery */ |
| if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { |
| phba->link_state = LPFC_CLEAR_LA; |
| lpfc_clear_la(phba, mbox); |
| mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; |
| mbox->vport = vport; |
| rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); |
| if (rc == MBX_NOT_FINISHED) { |
| mempool_free(mbox, phba->mbox_mem_pool); |
| lpfc_disc_flush_list(vport); |
| extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; |
| fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; |
| next_ring->flag &= ~LPFC_STOP_IOCB_EVENT; |
| phba->link_state = LPFC_HBA_ERROR; |
| } |
| } |
| } |
| |
| /* Reg_vpi to tell firmware to resume normal operations */ |
| void |
| lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) |
| { |
| LPFC_MBOXQ_t *regvpimbox; |
| |
| regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (regvpimbox) { |
| lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox); |
| regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; |
| regvpimbox->vport = vport; |
| if (lpfc_sli_issue_mbox(phba, regvpimbox, MBX_NOWAIT) |
| == MBX_NOT_FINISHED) { |
| mempool_free(regvpimbox, phba->mbox_mem_pool); |
| } |
| } |
| } |
| |
| /* Start Link up / RSCN discovery on NPR nodes */ |
| void |
| lpfc_disc_start(struct lpfc_vport *vport) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_hba *phba = vport->phba; |
| uint32_t num_sent; |
| uint32_t clear_la_pending; |
| int did_changed; |
| |
| if (!lpfc_is_link_up(phba)) |
| return; |
| |
| if (phba->link_state == LPFC_CLEAR_LA) |
| clear_la_pending = 1; |
| else |
| clear_la_pending = 0; |
| |
| if (vport->port_state < LPFC_VPORT_READY) |
| vport->port_state = LPFC_DISC_AUTH; |
| |
| lpfc_set_disctmo(vport); |
| |
| if (vport->fc_prevDID == vport->fc_myDID) |
| did_changed = 0; |
| else |
| did_changed = 1; |
| |
| vport->fc_prevDID = vport->fc_myDID; |
| vport->num_disc_nodes = 0; |
| |
| /* Start Discovery state <hba_state> */ |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, |
| "0202 Start Discovery hba state x%x " |
| "Data: x%x x%x x%x\n", |
| vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, |
| vport->fc_adisc_cnt); |
| |
| /* First do ADISCs - if any */ |
| num_sent = lpfc_els_disc_adisc(vport); |
| |
| if (num_sent) |
| return; |
| |
| /* |
| * For SLI3, cmpl_reg_vpi will set port_state to READY, and |
| * continue discovery. |
| */ |
| if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && |
| !(vport->fc_flag & FC_PT2PT) && |
| !(vport->fc_flag & FC_RSCN_MODE)) { |
| lpfc_issue_reg_vpi(phba, vport); |
| return; |
| } |
| |
| /* |
| * For SLI2, we need to set port_state to READY and continue |
| * discovery. |
| */ |
| if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { |
| /* If we get here, there is nothing to ADISC */ |
| if (vport->port_type == LPFC_PHYSICAL_PORT) |
| lpfc_issue_clear_la(phba, vport); |
| |
| if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { |
| vport->num_disc_nodes = 0; |
| /* go thru NPR nodes and issue ELS PLOGIs */ |
| if (vport->fc_npr_cnt) |
| lpfc_els_disc_plogi(vport); |
| |
| if (!vport->num_disc_nodes) { |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~FC_NDISC_ACTIVE; |
| spin_unlock_irq(shost->host_lock); |
| lpfc_can_disctmo(vport); |
| } |
| } |
| vport->port_state = LPFC_VPORT_READY; |
| } else { |
| /* Next do PLOGIs - if any */ |
| num_sent = lpfc_els_disc_plogi(vport); |
| |
| if (num_sent) |
| return; |
| |
| if (vport->fc_flag & FC_RSCN_MODE) { |
| /* Check to see if more RSCNs came in while we |
| * were processing this one. |
| */ |
| if ((vport->fc_rscn_id_cnt == 0) && |
| (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~FC_RSCN_MODE; |
| spin_unlock_irq(shost->host_lock); |
| lpfc_can_disctmo(vport); |
| } else |
| lpfc_els_handle_rscn(vport); |
| } |
| } |
| return; |
| } |
| |
| /* |
| * Ignore completion for all IOCBs on tx and txcmpl queue for ELS |
| * ring the match the sppecified nodelist. |
| */ |
| static void |
| lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) |
| { |
| LIST_HEAD(completions); |
| struct lpfc_sli *psli; |
| IOCB_t *icmd; |
| struct lpfc_iocbq *iocb, *next_iocb; |
| struct lpfc_sli_ring *pring; |
| |
| psli = &phba->sli; |
| pring = &psli->ring[LPFC_ELS_RING]; |
| |
| /* Error matching iocb on txq or txcmplq |
| * First check the txq. |
| */ |
| spin_lock_irq(&phba->hbalock); |
| list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { |
| if (iocb->context1 != ndlp) { |
| continue; |
| } |
| icmd = &iocb->iocb; |
| if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || |
| (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { |
| |
| list_move_tail(&iocb->list, &completions); |
| pring->txq_cnt--; |
| } |
| } |
| |
| /* Next check the txcmplq */ |
| list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { |
| if (iocb->context1 != ndlp) { |
| continue; |
| } |
| icmd = &iocb->iocb; |
| if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || |
| icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { |
| lpfc_sli_issue_abort_iotag(phba, pring, iocb); |
| } |
| } |
| spin_unlock_irq(&phba->hbalock); |
| |
| while (!list_empty(&completions)) { |
| iocb = list_get_first(&completions, struct lpfc_iocbq, list); |
| list_del_init(&iocb->list); |
| |
| if (!iocb->iocb_cmpl) |
| lpfc_sli_release_iocbq(phba, iocb); |
| else { |
| icmd = &iocb->iocb; |
| icmd->ulpStatus = IOSTAT_LOCAL_REJECT; |
| icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; |
| (iocb->iocb_cmpl) (phba, iocb, iocb); |
| } |
| } |
| } |
| |
| static void |
| lpfc_disc_flush_list(struct lpfc_vport *vport) |
| { |
| struct lpfc_nodelist *ndlp, *next_ndlp; |
| struct lpfc_hba *phba = vport->phba; |
| |
| if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { |
| list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, |
| nlp_listp) { |
| if (!NLP_CHK_NODE_ACT(ndlp)) |
| continue; |
| if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || |
| ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { |
| lpfc_free_tx(phba, ndlp); |
| } |
| } |
| } |
| } |
| |
| void |
| lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) |
| { |
| lpfc_els_flush_rscn(vport); |
| lpfc_els_flush_cmd(vport); |
| lpfc_disc_flush_list(vport); |
| } |
| |
| /*****************************************************************************/ |
| /* |
| * NAME: lpfc_disc_timeout |
| * |
| * FUNCTION: Fibre Channel driver discovery timeout routine. |
| * |
| * EXECUTION ENVIRONMENT: interrupt only |
| * |
| * CALLED FROM: |
| * Timer function |
| * |
| * RETURNS: |
| * none |
| */ |
| /*****************************************************************************/ |
| void |
| lpfc_disc_timeout(unsigned long ptr) |
| { |
| struct lpfc_vport *vport = (struct lpfc_vport *) ptr; |
| struct lpfc_hba *phba = vport->phba; |
| uint32_t tmo_posted; |
| unsigned long flags = 0; |
| |
| if (unlikely(!phba)) |
| return; |
| |
| spin_lock_irqsave(&vport->work_port_lock, flags); |
| tmo_posted = vport->work_port_events & WORKER_DISC_TMO; |
| if (!tmo_posted) |
| vport->work_port_events |= WORKER_DISC_TMO; |
| spin_unlock_irqrestore(&vport->work_port_lock, flags); |
| |
| if (!tmo_posted) |
| lpfc_worker_wake_up(phba); |
| return; |
| } |
| |
| static void |
| lpfc_disc_timeout_handler(struct lpfc_vport *vport) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_sli *psli = &phba->sli; |
| struct lpfc_nodelist *ndlp, *next_ndlp; |
| LPFC_MBOXQ_t *initlinkmbox; |
| int rc, clrlaerr = 0; |
| |
| if (!(vport->fc_flag & FC_DISC_TMO)) |
| return; |
| |
| spin_lock_irq(shost->host_lock); |
| vport->fc_flag &= ~FC_DISC_TMO; |
| spin_unlock_irq(shost->host_lock); |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, |
| "disc timeout: state:x%x rtry:x%x flg:x%x", |
| vport->port_state, vport->fc_ns_retry, vport->fc_flag); |
| |
| switch (vport->port_state) { |
| |
| case LPFC_LOCAL_CFG_LINK: |
| /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for |
| * FAN |
| */ |
| /* FAN timeout */ |
| lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, |
| "0221 FAN timeout\n"); |
| /* Start discovery by sending FLOGI, clean up old rpis */ |
| list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, |
| nlp_listp) { |
| if (!NLP_CHK_NODE_ACT(ndlp)) |
| continue; |
| if (ndlp->nlp_state != NLP_STE_NPR_NODE) |
| continue; |
| if (ndlp->nlp_type & NLP_FABRIC) { |
| /* Clean up the ndlp on Fabric connections */ |
| lpfc_drop_node(vport, ndlp); |
| |
| } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { |
| /* Fail outstanding IO now since device |
| * is marked for PLOGI. |
| */ |
| lpfc_unreg_rpi(vport, ndlp); |
| } |
| } |
| if (vport->port_state != LPFC_FLOGI) { |
| lpfc_initial_flogi(vport); |
| return; |
| } |
| break; |
| |
| case LPFC_FDISC: |
| case LPFC_FLOGI: |
| /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ |
| /* Initial FLOGI timeout */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0222 Initial %s timeout\n", |
| vport->vpi ? "FDISC" : "FLOGI"); |
| |
| /* Assume no Fabric and go on with discovery. |
| * Check for outstanding ELS FLOGI to abort. |
| */ |
| |
| /* FLOGI failed, so just use loop map to make discovery list */ |
| lpfc_disc_list_loopmap(vport); |
| |
| /* Start discovery */ |
| lpfc_disc_start(vport); |
| break; |
| |
| case LPFC_FABRIC_CFG_LINK: |
| /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for |
| NameServer login */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0223 Timeout while waiting for " |
| "NameServer login\n"); |
| /* Next look for NameServer ndlp */ |
| ndlp = lpfc_findnode_did(vport, NameServer_DID); |
| if (ndlp && NLP_CHK_NODE_ACT(ndlp)) |
| lpfc_els_abort(phba, ndlp); |
| |
| /* ReStart discovery */ |
| goto restart_disc; |
| |
| case LPFC_NS_QRY: |
| /* Check for wait for NameServer Rsp timeout */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0224 NameServer Query timeout " |
| "Data: x%x x%x\n", |
| vport->fc_ns_retry, LPFC_MAX_NS_RETRY); |
| |
| if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { |
| /* Try it one more time */ |
| vport->fc_ns_retry++; |
| rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, |
| vport->fc_ns_retry, 0); |
| if (rc == 0) |
| break; |
| } |
| vport->fc_ns_retry = 0; |
| |
| restart_disc: |
| /* |
| * Discovery is over. |
| * set port_state to PORT_READY if SLI2. |
| * cmpl_reg_vpi will set port_state to READY for SLI3. |
| */ |
| if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) |
| lpfc_issue_reg_vpi(phba, vport); |
| else { /* NPIV Not enabled */ |
| lpfc_issue_clear_la(phba, vport); |
| vport->port_state = LPFC_VPORT_READY; |
| } |
| |
| /* Setup and issue mailbox INITIALIZE LINK command */ |
| initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); |
| if (!initlinkmbox) { |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0206 Device Discovery " |
| "completion error\n"); |
| phba->link_state = LPFC_HBA_ERROR; |
| break; |
| } |
| |
| lpfc_linkdown(phba); |
| lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, |
| phba->cfg_link_speed); |
| initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0; |
| initlinkmbox->vport = vport; |
| initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; |
| rc = lpfc_sli_issue_mbox(phba, initlinkmbox, MBX_NOWAIT); |
| lpfc_set_loopback_flag(phba); |
| if (rc == MBX_NOT_FINISHED) |
| mempool_free(initlinkmbox, phba->mbox_mem_pool); |
| |
| break; |
| |
| case LPFC_DISC_AUTH: |
| /* Node Authentication timeout */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0227 Node Authentication timeout\n"); |
| lpfc_disc_flush_list(vport); |
| |
| /* |
| * set port_state to PORT_READY if SLI2. |
| * cmpl_reg_vpi will set port_state to READY for SLI3. |
| */ |
| if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) |
| lpfc_issue_reg_vpi(phba, vport); |
| else { /* NPIV Not enabled */ |
| lpfc_issue_clear_la(phba, vport); |
| vport->port_state = LPFC_VPORT_READY; |
| } |
| break; |
| |
| case LPFC_VPORT_READY: |
| if (vport->fc_flag & FC_RSCN_MODE) { |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0231 RSCN timeout Data: x%x " |
| "x%x\n", |
| vport->fc_ns_retry, LPFC_MAX_NS_RETRY); |
| |
| /* Cleanup any outstanding ELS commands */ |
| lpfc_els_flush_cmd(vport); |
| |
| lpfc_els_flush_rscn(vport); |
| lpfc_disc_flush_list(vport); |
| } |
| break; |
| |
| default: |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0273 Unexpected discovery timeout, " |
| "vport State x%x\n", vport->port_state); |
| break; |
| } |
| |
| switch (phba->link_state) { |
| case LPFC_CLEAR_LA: |
| /* CLEAR LA timeout */ |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0228 CLEAR LA timeout\n"); |
| clrlaerr = 1; |
| break; |
| |
| case LPFC_LINK_UP: |
| lpfc_issue_clear_la(phba, vport); |
| /* Drop thru */ |
| case LPFC_LINK_UNKNOWN: |
| case LPFC_WARM_START: |
| case LPFC_INIT_START: |
| case LPFC_INIT_MBX_CMDS: |
| case LPFC_LINK_DOWN: |
| case LPFC_HBA_ERROR: |
| lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, |
| "0230 Unexpected timeout, hba link " |
| "state x%x\n", phba->link_state); |
| clrlaerr = 1; |
| break; |
| |
| case LPFC_HBA_READY: |
| break; |
| } |
| |
| if (clrlaerr) { |
| lpfc_disc_flush_list(vport); |
| psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; |
| psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; |
| psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; |
| vport->port_state = LPFC_VPORT_READY; |
| } |
| |
| return; |
| } |
| |
| /* |
| * This routine handles processing a NameServer REG_LOGIN mailbox |
| * command upon completion. It is setup in the LPFC_MBOXQ |
| * as the completion routine when the command is |
| * handed off to the SLI layer. |
| */ |
| void |
| lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) |
| { |
| MAILBOX_t *mb = &pmb->mb; |
| struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); |
| struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; |
| struct lpfc_vport *vport = pmb->vport; |
| |
| pmb->context1 = NULL; |
| |
| ndlp->nlp_rpi = mb->un.varWords[0]; |
| ndlp->nlp_type |= NLP_FABRIC; |
| lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); |
| |
| /* |
| * Start issuing Fabric-Device Management Interface (FDMI) command to |
| * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if |
| * fdmi-on=2 (supporting RPA/hostnmae) |
| */ |
| |
| if (vport->cfg_fdmi_on == 1) |
| lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA); |
| else |
| mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60); |
| |
| /* decrement the node reference count held for this callback |
| * function. |
| */ |
| lpfc_nlp_put(ndlp); |
| lpfc_mbuf_free(phba, mp->virt, mp->phys); |
| kfree(mp); |
| mempool_free(pmb, phba->mbox_mem_pool); |
| |
| return; |
| } |
| |
| static int |
| lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) |
| { |
| uint16_t *rpi = param; |
| |
| return ndlp->nlp_rpi == *rpi; |
| } |
| |
| static int |
| lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) |
| { |
| return memcmp(&ndlp->nlp_portname, param, |
| sizeof(ndlp->nlp_portname)) == 0; |
| } |
| |
| static struct lpfc_nodelist * |
| __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) |
| { |
| struct lpfc_nodelist *ndlp; |
| |
| list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { |
| if (filter(ndlp, param)) |
| return ndlp; |
| } |
| return NULL; |
| } |
| |
| /* |
| * This routine looks up the ndlp lists for the given RPI. If rpi found it |
| * returns the node list element pointer else return NULL. |
| */ |
| struct lpfc_nodelist * |
| __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) |
| { |
| return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); |
| } |
| |
| /* |
| * This routine looks up the ndlp lists for the given WWPN. If WWPN found it |
| * returns the node element list pointer else return NULL. |
| */ |
| struct lpfc_nodelist * |
| lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) |
| { |
| struct Scsi_Host *shost = lpfc_shost_from_vport(vport); |
| struct lpfc_nodelist *ndlp; |
| |
| spin_lock_irq(shost->host_lock); |
| ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); |
| spin_unlock_irq(shost->host_lock); |
| return ndlp; |
| } |
| |
| void |
| lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, |
| uint32_t did) |
| { |
| memset(ndlp, 0, sizeof (struct lpfc_nodelist)); |
| INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); |
| INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); |
| init_timer(&ndlp->nlp_delayfunc); |
| ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; |
| ndlp->nlp_delayfunc.data = (unsigned long)ndlp; |
| ndlp->nlp_DID = did; |
| ndlp->vport = vport; |
| ndlp->nlp_sid = NLP_NO_SID; |
| INIT_LIST_HEAD(&ndlp->nlp_listp); |
| kref_init(&ndlp->kref); |
| NLP_INT_NODE_ACT(ndlp); |
| |
| lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, |
| "node init: did:x%x", |
| ndlp->nlp_DID, 0, 0); |
| |
| return; |
| } |
| |
| /* This routine releases all resources associated with a specifc NPort's ndlp |
| * and mempool_free's the nodelist. |
| */ |
| static void |
| lpfc_nlp_release(struct kref *kref) |
| { |
| struct lpfc_hba *phba; |
| unsigned long flags; |
| struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, |
| kref); |
| |
| lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, |
| "node release: did:x%x flg:x%x type:x%x", |
| ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); |
| |
| lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE, |
| "0279 lpfc_nlp_release: ndlp:x%p " |
| "usgmap:x%x refcnt:%d\n", |
| (void *)ndlp, ndlp->nlp_usg_map, |
| atomic_read(&ndlp->kref.refcount)); |
| |
| /* remove ndlp from action. */ |
| lpfc_nlp_remove(ndlp->vport, ndlp); |
| |
| /* clear the ndlp active flag for all release cases */ |
| phba = ndlp->vport->phba; |
| spin_lock_irqsave(&phba->ndlp_lock, flags); |
| NLP_CLR_NODE_ACT(ndlp); |
| spin_unlock_irqrestore(&phba->ndlp_lock, flags); |
| |
| /* free ndlp memory for final ndlp release */ |
| if (NLP_CHK_FREE_REQ(ndlp)) |
| mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool); |
| } |
| |
| /* This routine bumps the reference count for a ndlp structure to ensure |
| * that one discovery thread won't free a ndlp while another discovery thread |
| * is using it. |
| */ |
| struct lpfc_nodelist * |
| lpfc_nlp_get(struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_hba *phba; |
| unsigned long flags; |
| |
| if (ndlp) { |
| lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, |
| "node get: did:x%x flg:x%x refcnt:x%x", |
| ndlp->nlp_DID, ndlp->nlp_flag, |
| atomic_read(&ndlp->kref.refcount)); |
| /* The check of ndlp usage to prevent incrementing the |
| * ndlp reference count that is in the process of being |
| * released. |
| */ |
| phba = ndlp->vport->phba; |
| spin_lock_irqsave(&phba->ndlp_lock, flags); |
| if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) { |
| spin_unlock_irqrestore(&phba->ndlp_lock, flags); |
| lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, |
| "0276 lpfc_nlp_get: ndlp:x%p " |
| "usgmap:x%x refcnt:%d\n", |
| (void *)ndlp, ndlp->nlp_usg_map, |
| atomic_read(&ndlp->kref.refcount)); |
| return NULL; |
| } else |
| kref_get(&ndlp->kref); |
| spin_unlock_irqrestore(&phba->ndlp_lock, flags); |
| } |
| return ndlp; |
| } |
| |
| /* This routine decrements the reference count for a ndlp structure. If the |
| * count goes to 0, this indicates the the associated nodelist should be |
| * freed. Returning 1 indicates the ndlp resource has been released; on the |
| * other hand, returning 0 indicates the ndlp resource has not been released |
| * yet. |
| */ |
| int |
| lpfc_nlp_put(struct lpfc_nodelist *ndlp) |
| { |
| struct lpfc_hba *phba; |
| unsigned long flags; |
| |
| if (!ndlp) |
| return 1; |
| |
| lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, |
| "node put: did:x%x flg:x%x refcnt:x%x", |
| ndlp->nlp_DID, ndlp->nlp_flag, |
| atomic_read(&ndlp->kref.refcount)); |
| phba = ndlp->vport->phba; |
| spin_lock_irqsave(&phba->ndlp_lock, flags); |
| /* Check the ndlp memory free acknowledge flag to avoid the |
| * possible race condition that kref_put got invoked again |
| * after previous one has done ndlp memory free. |
| */ |
| if (NLP_CHK_FREE_ACK(ndlp)) { |
| spin_unlock_irqrestore(&phba->ndlp_lock, flags); |
| lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, |
| "0274 lpfc_nlp_put: ndlp:x%p " |
| "usgmap:x%x refcnt:%d\n", |
| (void *)ndlp, ndlp->nlp_usg_map, |
| atomic_read(&ndlp->kref.refcount)); |
| return 1; |
| } |
| /* Check the ndlp inactivate log flag to avoid the possible |
| * race condition that kref_put got invoked again after ndlp |
| * is already in inactivating state. |
| */ |
| if (NLP_CHK_IACT_REQ(ndlp)) { |
| spin_unlock_irqrestore(&phba->ndlp_lock, flags); |
| lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_NODE, |
| "0275 lpfc_nlp_put: ndlp:x%p " |
| "usgmap:x%x refcnt:%d\n", |
| (void *)ndlp, ndlp->nlp_usg_map, |
| atomic_read(&ndlp->kref.refcount)); |
| return 1; |
| } |
| /* For last put, mark the ndlp usage flags to make sure no |
| * other kref_get and kref_put on the same ndlp shall get |
| * in between the process when the final kref_put has been |
| * invoked on this ndlp. |
| */ |
| if (atomic_read(&ndlp->kref.refcount) == 1) { |
| /* Indicate ndlp is put to inactive state. */ |
| NLP_SET_IACT_REQ(ndlp); |
| /* Acknowledge ndlp memory free has been seen. */ |
| if (NLP_CHK_FREE_REQ(ndlp)) |
| NLP_SET_FREE_ACK(ndlp); |
| } |
| spin_unlock_irqrestore(&phba->ndlp_lock, flags); |
| /* Note, the kref_put returns 1 when decrementing a reference |
| * count that was 1, it invokes the release callback function, |
| * but it still left the reference count as 1 (not actually |
| * performs the last decrementation). Otherwise, it actually |
| * decrements the reference count and returns 0. |
| */ |
| return kref_put(&ndlp->kref, lpfc_nlp_release); |
| } |
| |
| /* This routine free's the specified nodelist if it is not in use |
| * by any other discovery thread. This routine returns 1 if the |
| * ndlp has been freed. A return value of 0 indicates the ndlp is |
| * not yet been released. |
| */ |
| int |
| lpfc_nlp_not_used(struct lpfc_nodelist *ndlp) |
| { |
| lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, |
| "node not used: did:x%x flg:x%x refcnt:x%x", |
| ndlp->nlp_DID, ndlp->nlp_flag, |
| atomic_read(&ndlp->kref.refcount)); |
| if (atomic_read(&ndlp->kref.refcount) == 1) |
| if (lpfc_nlp_put(ndlp)) |
| return 1; |
| return 0; |
| } |