/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2004-2007 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 #include #include #include #include #include #include #include #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) { 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); } /* * A device is normally blocked for rediscovery and unblocked when * devloss timeout happens. In case a vport is removed or driver * unloaded before devloss timeout happens, we need to unblock here. */ scsi_target_unblock(&rport->dev); return; } /* * 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) { if (rport->scsi_target_id != -1) { printk(KERN_ERR "Cannot find remote node" " for rport in dev_loss_tmo_callbk x%x\n", rport->port_id); } 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); evtp->evt_arg1 = ndlp; evtp->evt = LPFC_EVT_DEV_LOSS; list_add_tail(&evtp->evt_listp, &phba->work_list); if (phba->work_wait) wake_up(phba->work_wait); 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) { 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; 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 (vport->load_flag & FC_UNLOADING) warn_on = 0; if (warn_on) { lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, "0203 Devloss timeout on " "WWPN %x:%x:%x:%x:%x:%x:%x:%x " "NPort x%x 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 %x:%x:%x:%x:%x:%x:%x:%x " "NPort x%x 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); } } void lpfc_worker_wake_up(struct lpfc_hba *phba) { wake_up(phba->work_wait); return; } 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 */ break; case LPFC_EVT_DEV_LOSS: ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); lpfc_nlp_get(ndlp); lpfc_dev_loss_tmo_handler(ndlp); free_evt = 0; 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 < LPFC_MAX_VPORTS; 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; work_port_events = vport->work_port_events; 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); spin_lock_irq(&vport->work_port_lock); vport->work_port_events &= ~work_port_events; spin_unlock_irq(&vport->work_port_lock); } lpfc_destroy_vport_work_array(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; } else { lpfc_sli_handle_slow_ring_event(phba, pring, (status & HA_RXMASK)); pring->flag &= ~LPFC_DEFERRED_RING_EVENT; } /* * 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); } static int check_work_wait_done(struct lpfc_hba *phba) { struct lpfc_vport *vport; struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; int rc = 0; spin_lock_irq(&phba->hbalock); list_for_each_entry(vport, &phba->port_list, listentry) { if (vport->work_port_events) { rc = 1; break; } } if (rc || phba->work_ha || (!list_empty(&phba->work_list)) || kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) { rc = 1; phba->work_found++; } else phba->work_found = 0; spin_unlock_irq(&phba->hbalock); return rc; } int lpfc_do_work(void *p) { struct lpfc_hba *phba = p; int rc; DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq); set_user_nice(current, -20); phba->work_wait = &work_waitq; phba->work_found = 0; while (1) { rc = wait_event_interruptible(work_waitq, check_work_wait_done(phba)); BUG_ON(rc); if (kthread_should_stop()) break; lpfc_work_done(phba); /* If there is alot of slow ring work, like during link up * check_work_wait_done() may cause this thread to not give * up the CPU for very long periods of time. This may cause * soft lockups or other problems. To avoid these situations * give up the CPU here after LPFC_MAX_WORKER_ITERATION * consecutive iterations. */ if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) { phba->work_found = 0; schedule(); } } phba->work_wait = NULL; 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); if (phba->work_wait) lpfc_worker_wake_up(phba); spin_unlock_irqrestore(&phba->hbalock, flags); return 1; } void lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) { 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 (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); vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; } } 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 < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { /* Issue a LINK DOWN event to all nodes */ lpfc_linkdown_port(vports[i]); } lpfc_destroy_vport_work_array(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 (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 < LPFC_MAX_VPORTS && vports[i] != NULL; i++) lpfc_linkup_port(vports[i]); lpfc_destroy_vport_work_array(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 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); return; 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); } vport->port_state = LPFC_VPORT_READY; 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 | FC_ESTABLISH_LINK); spin_unlock_irq(shost->host_lock); del_timer_sync(&phba->fc_estabtmo); 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 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; /* 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_mbx_issue_link_down(struct lpfc_hba *phba) { uint32_t control; struct lpfc_sli *psli = &phba->sli; lpfc_linkdown(phba); /* turn on Link Attention interrupts - no CLEAR_LA needed */ 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); } /* * 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); /* 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->attType == AT_LINK_UP) { phba->fc_stat.LinkUp++; if (phba->link_flag & LS_LOOPBACK_MODE) { lpfc_printf_log(phba, KERN_INFO, 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\n", la->eventTag, phba->fc_eventTag, la->granted_AL_PA, la->UlnkSpeed, phba->alpa_map[0]); } lpfc_mbx_process_link_up(phba, la); } else { phba->fc_stat.LinkDown++; lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, "1305 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); } 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); 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); } void 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; 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; } } 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); lpfc_nlp_put(ndlp); 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); 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); return; } ndlp->nlp_rpi = mb->un.varWords[0]; ndlp->nlp_type |= NLP_FABRIC; lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); lpfc_nlp_put(ndlp); /* Drop the reference from the mbox */ if (vport->port_state == LPFC_FABRIC_CFG_LINK) { vports = lpfc_create_vport_work_array(phba); if (vports != NULL) for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { if (vports[i]->port_type == LPFC_PHYSICAL_PORT) continue; if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) lpfc_initial_fdisc(vports[i]); else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { 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(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); 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: 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; } 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 && (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 && 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_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0) 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); } 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 resides on the UNUSED list * until ALL other outstanding threads have completed. Thus, if a * ndlp is on the UNUSED list already, we should never do another * lpfc_drop_node() on it. */ 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 */ 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 */ 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; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 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; rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); 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 */ 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); lpfc_dequeue_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); lpfc_nlp_put(ndlp); } } 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); if (!list_empty(&ndlp->els_retry_evt.evt_listp)) list_del_init(&ndlp->els_retry_evt.evt_listp); if (!list_empty(&ndlp->dev_loss_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; if (ndlp->nlp_flag & NLP_DELAY_TMO) { 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 = 0; 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; if (ndlp->nlp_DID == 0) { 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 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; } if (vport->fc_flag & FC_RSCN_MODE) { 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. */ if (ndlp->nlp_flag & NLP_DELAY_TMO) 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 */ 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_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 (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; unsigned long flags = 0; if (unlikely(!phba)) return; if ((vport->work_port_events & WORKER_DISC_TMO) == 0) { spin_lock_irqsave(&vport->work_port_lock, flags); vport->work_port_events |= WORKER_DISC_TMO; spin_unlock_irqrestore(&vport->work_port_lock, flags); spin_lock_irqsave(&phba->hbalock, flags); if (phba->work_wait) lpfc_worker_wake_up(phba); spin_unlock_irqrestore(&phba->hbalock, flags); } 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 (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) 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, "0229 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_UNKNOWN: case LPFC_WARM_START: case LPFC_INIT_START: case LPFC_INIT_MBX_CMDS: case LPFC_LINK_DOWN: case LPFC_LINK_UP: 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); /* Mailbox took a reference to the node */ 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; } #if 0 /* * Search node lists for a remote port matching filter criteria * Caller needs to hold host_lock before calling this routine. */ struct lpfc_nodelist * lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_nodelist *ndlp; spin_lock_irq(shost->host_lock); ndlp = __lpfc_find_node(vport, filter, param); spin_unlock_irq(shost->host_lock); return ndlp; } #endif /* 0 */ /* * 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); } #if 0 struct lpfc_nodelist * lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) { struct Scsi_Host *shost = lpfc_shost_from_vport(vport); struct lpfc_nodelist *ndlp; spin_lock_irq(shost->host_lock); ndlp = __lpfc_findnode_rpi(vport, rpi); spin_unlock_irq(shost->host_lock); return ndlp; } #endif /* 0 */ /* * 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); 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_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_nlp_remove(ndlp->vport, 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) { 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)); kref_get(&ndlp->kref); } 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. */ int lpfc_nlp_put(struct lpfc_nodelist *ndlp) { if (ndlp) { 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)); } return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; } /* 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 * is not being used by anyone and has been freed. A return value of * 0 indicates it is being used by another discovery thread and the * refcount is left unchanged. */ 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) { lpfc_nlp_put(ndlp); return 1; } return 0; }