/******************************************************************* * 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/delay.h> #include <linux/dma-mapping.h> #include <linux/idr.h> #include <linux/interrupt.h> #include <linux/kthread.h> #include <linux/pci.h> #include <linux/spinlock.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_sli.h" #include "lpfc_nl.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" #include "lpfc_logmsg.h" #include "lpfc_crtn.h" #include "lpfc_version.h" #include "lpfc_vport.h" inline void lpfc_vport_set_state(struct lpfc_vport *vport, enum fc_vport_state new_state) { struct fc_vport *fc_vport = vport->fc_vport; if (fc_vport) { /* * When the transport defines fc_vport_set state we will replace * this code with the following line */ /* fc_vport_set_state(fc_vport, new_state); */ if (new_state != FC_VPORT_INITIALIZING) fc_vport->vport_last_state = fc_vport->vport_state; fc_vport->vport_state = new_state; } /* for all the error states we will set the invternal state to FAILED */ switch (new_state) { case FC_VPORT_NO_FABRIC_SUPP: case FC_VPORT_NO_FABRIC_RSCS: case FC_VPORT_FABRIC_LOGOUT: case FC_VPORT_FABRIC_REJ_WWN: case FC_VPORT_FAILED: vport->port_state = LPFC_VPORT_FAILED; break; case FC_VPORT_LINKDOWN: vport->port_state = LPFC_VPORT_UNKNOWN; break; default: /* do nothing */ break; } } static int lpfc_alloc_vpi(struct lpfc_hba *phba) { int vpi; spin_lock_irq(&phba->hbalock); /* Start at bit 1 because vpi zero is reserved for the physical port */ vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1); if (vpi > phba->max_vpi) vpi = 0; else set_bit(vpi, phba->vpi_bmask); spin_unlock_irq(&phba->hbalock); return vpi; } static void lpfc_free_vpi(struct lpfc_hba *phba, int vpi) { spin_lock_irq(&phba->hbalock); clear_bit(vpi, phba->vpi_bmask); spin_unlock_irq(&phba->hbalock); } static int lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport) { LPFC_MBOXQ_t *pmb; MAILBOX_t *mb; struct lpfc_dmabuf *mp; int rc; pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!pmb) { return -ENOMEM; } mb = &pmb->mb; lpfc_read_sparam(phba, pmb, vport->vpi); /* * Grab buffer pointer and clear context1 so we can use * lpfc_sli_issue_box_wait */ mp = (struct lpfc_dmabuf *) pmb->context1; pmb->context1 = NULL; pmb->vport = vport; rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2); if (rc != MBX_SUCCESS) { if (signal_pending(current)) { lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT, "1830 Signal aborted mbxCmd x%x\n", mb->mbxCommand); lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); if (rc != MBX_TIMEOUT) mempool_free(pmb, phba->mbox_mem_pool); return -EINTR; } else { lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT, "1818 VPort failed init, mbxCmd x%x " "READ_SPARM mbxStatus x%x, rc = x%x\n", mb->mbxCommand, mb->mbxStatus, rc); lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); if (rc != MBX_TIMEOUT) mempool_free(pmb, phba->mbox_mem_pool); return -EIO; } } memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm)); memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, sizeof (struct lpfc_name)); memcpy(&vport->fc_portname, &vport->fc_sparam.portName, sizeof (struct lpfc_name)); lpfc_mbuf_free(phba, mp->virt, mp->phys); kfree(mp); mempool_free(pmb, phba->mbox_mem_pool); return 0; } static int lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn, const char *name_type) { /* ensure that IEEE format 1 addresses * contain zeros in bits 59-48 */ if (!((wwn->u.wwn[0] >> 4) == 1 && ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0))) return 1; lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, "1822 Invalid %s: %02x:%02x:%02x:%02x:" "%02x:%02x:%02x:%02x\n", name_type, wwn->u.wwn[0], wwn->u.wwn[1], wwn->u.wwn[2], wwn->u.wwn[3], wwn->u.wwn[4], wwn->u.wwn[5], wwn->u.wwn[6], wwn->u.wwn[7]); return 0; } static int lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport) { struct lpfc_vport *vport; unsigned long flags; spin_lock_irqsave(&phba->hbalock, flags); list_for_each_entry(vport, &phba->port_list, listentry) { if (vport == new_vport) continue; /* If they match, return not unique */ if (memcmp(&vport->fc_sparam.portName, &new_vport->fc_sparam.portName, sizeof(struct lpfc_name)) == 0) { spin_unlock_irqrestore(&phba->hbalock, flags); return 0; } } spin_unlock_irqrestore(&phba->hbalock, flags); return 1; } /** * lpfc_discovery_wait: Wait for driver discovery to quiesce. * @vport: The virtual port for which this call is being executed. * * This driver calls this routine specifically from lpfc_vport_delete * to enforce a synchronous execution of vport * delete relative to discovery activities. The * lpfc_vport_delete routine should not return until it * can reasonably guarantee that discovery has quiesced. * Post FDISC LOGO, the driver must wait until its SAN teardown is * complete and all resources recovered before allowing * cleanup. * * This routine does not require any locks held. **/ static void lpfc_discovery_wait(struct lpfc_vport *vport) { struct lpfc_hba *phba = vport->phba; uint32_t wait_flags = 0; unsigned long wait_time_max; unsigned long start_time; wait_flags = FC_RSCN_MODE | FC_RSCN_DISCOVERY | FC_NLP_MORE | FC_RSCN_DEFERRED | FC_NDISC_ACTIVE | FC_DISC_TMO; /* * The time constraint on this loop is a balance between the * fabric RA_TOV value and dev_loss tmo. The driver's * devloss_tmo is 10 giving this loop a 3x multiplier minimally. */ wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000); wait_time_max += jiffies; start_time = jiffies; while (time_before(jiffies, wait_time_max)) { if ((vport->num_disc_nodes > 0) || (vport->fc_flag & wait_flags) || ((vport->port_state > LPFC_VPORT_FAILED) && (vport->port_state < LPFC_VPORT_READY))) { lpfc_printf_log(phba, KERN_INFO, LOG_VPORT, "1833 Vport discovery quiesce Wait:" " vpi x%x state x%x fc_flags x%x" " num_nodes x%x, waiting 1000 msecs" " total wait msecs x%x\n", vport->vpi, vport->port_state, vport->fc_flag, vport->num_disc_nodes, jiffies_to_msecs(jiffies - start_time)); msleep(1000); } else { /* Base case. Wait variants satisfied. Break out */ lpfc_printf_log(phba, KERN_INFO, LOG_VPORT, "1834 Vport discovery quiesced:" " vpi x%x state x%x fc_flags x%x" " wait msecs x%x\n", vport->vpi, vport->port_state, vport->fc_flag, jiffies_to_msecs(jiffies - start_time)); break; } } if (time_after(jiffies, wait_time_max)) lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, "1835 Vport discovery quiesce failed:" " vpi x%x state x%x fc_flags x%x" " wait msecs x%x\n", vport->vpi, vport->port_state, vport->fc_flag, jiffies_to_msecs(jiffies - start_time)); } int lpfc_vport_create(struct fc_vport *fc_vport, bool disable) { struct lpfc_nodelist *ndlp; struct Scsi_Host *shost = fc_vport->shost; struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata; struct lpfc_hba *phba = pport->phba; struct lpfc_vport *vport = NULL; int instance; int vpi; int rc = VPORT_ERROR; int status; if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) { lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, "1808 Create VPORT failed: " "NPIV is not enabled: SLImode:%d\n", phba->sli_rev); rc = VPORT_INVAL; goto error_out; } vpi = lpfc_alloc_vpi(phba); if (vpi == 0) { lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, "1809 Create VPORT failed: " "Max VPORTs (%d) exceeded\n", phba->max_vpi); rc = VPORT_NORESOURCES; goto error_out; } /* Assign an unused board number */ if ((instance = lpfc_get_instance()) < 0) { lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, "1810 Create VPORT failed: Cannot get " "instance number\n"); lpfc_free_vpi(phba, vpi); rc = VPORT_NORESOURCES; goto error_out; } vport = lpfc_create_port(phba, instance, &fc_vport->dev); if (!vport) { lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, "1811 Create VPORT failed: vpi x%x\n", vpi); lpfc_free_vpi(phba, vpi); rc = VPORT_NORESOURCES; goto error_out; } vport->vpi = vpi; lpfc_debugfs_initialize(vport); if ((status = lpfc_vport_sparm(phba, vport))) { if (status == -EINTR) { lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, "1831 Create VPORT Interrupted.\n"); rc = VPORT_ERROR; } else { lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, "1813 Create VPORT failed. " "Cannot get sparam\n"); rc = VPORT_NORESOURCES; } lpfc_free_vpi(phba, vpi); destroy_port(vport); goto error_out; } memcpy(vport->fc_portname.u.wwn, vport->fc_sparam.portName.u.wwn, 8); memcpy(vport->fc_nodename.u.wwn, vport->fc_sparam.nodeName.u.wwn, 8); if (fc_vport->node_name != 0) u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn); if (fc_vport->port_name != 0) u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn); memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8); memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8); if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") || !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) { lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, "1821 Create VPORT failed. " "Invalid WWN format\n"); lpfc_free_vpi(phba, vpi); destroy_port(vport); rc = VPORT_INVAL; goto error_out; } if (!lpfc_unique_wwpn(phba, vport)) { lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, "1823 Create VPORT failed. " "Duplicate WWN on HBA\n"); lpfc_free_vpi(phba, vpi); destroy_port(vport); rc = VPORT_INVAL; goto error_out; } /* Create binary sysfs attribute for vport */ lpfc_alloc_sysfs_attr(vport); *(struct lpfc_vport **)fc_vport->dd_data = vport; vport->fc_vport = fc_vport; if ((phba->link_state < LPFC_LINK_UP) || (phba->fc_topology == TOPOLOGY_LOOP)) { lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); rc = VPORT_OK; goto out; } if (disable) { lpfc_vport_set_state(vport, FC_VPORT_DISABLED); rc = VPORT_OK; goto out; } /* Use the Physical nodes Fabric NDLP to determine if the link is * up and ready to FDISC. */ ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); if (ndlp && NLP_CHK_NODE_ACT(ndlp) && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { lpfc_set_disctmo(vport); lpfc_initial_fdisc(vport); } else { lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0262 No NPIV Fabric support\n"); } } else { lpfc_vport_set_state(vport, FC_VPORT_FAILED); } rc = VPORT_OK; out: lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, "1825 Vport Created.\n"); lpfc_host_attrib_init(lpfc_shost_from_vport(vport)); error_out: return rc; } static int disable_vport(struct fc_vport *fc_vport) { struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; long timeout; ndlp = lpfc_findnode_did(vport, Fabric_DID); if (ndlp && NLP_CHK_NODE_ACT(ndlp) && phba->link_state >= LPFC_LINK_UP) { vport->unreg_vpi_cmpl = VPORT_INVAL; timeout = msecs_to_jiffies(phba->fc_ratov * 2000); if (!lpfc_issue_els_npiv_logo(vport, ndlp)) while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout) timeout = schedule_timeout(timeout); } lpfc_sli_host_down(vport); /* Mark all nodes for discovery so we can remove them by * calling lpfc_cleanup_rpis(vport, 1) */ 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; lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RECOVERY); } lpfc_cleanup_rpis(vport, 1); lpfc_stop_vport_timers(vport); lpfc_unreg_all_rpis(vport); lpfc_unreg_default_rpis(vport); /* * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the * scsi_host_put() to release the vport. */ lpfc_mbx_unreg_vpi(vport); lpfc_vport_set_state(vport, FC_VPORT_DISABLED); lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, "1826 Vport Disabled.\n"); return VPORT_OK; } static int enable_vport(struct fc_vport *fc_vport) { struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp = NULL; if ((phba->link_state < LPFC_LINK_UP) || (phba->fc_topology == TOPOLOGY_LOOP)) { lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); return VPORT_OK; } vport->load_flag |= FC_LOADING; vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; /* Use the Physical nodes Fabric NDLP to determine if the link is * up and ready to FDISC. */ ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); if (ndlp && NLP_CHK_NODE_ACT(ndlp) && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { lpfc_set_disctmo(vport); lpfc_initial_fdisc(vport); } else { lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, "0264 No NPIV Fabric support\n"); } } else { lpfc_vport_set_state(vport, FC_VPORT_FAILED); } lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, "1827 Vport Enabled.\n"); return VPORT_OK; } int lpfc_vport_disable(struct fc_vport *fc_vport, bool disable) { if (disable) return disable_vport(fc_vport); else return enable_vport(fc_vport); } int lpfc_vport_delete(struct fc_vport *fc_vport) { struct lpfc_nodelist *ndlp = NULL; struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost; struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; struct lpfc_hba *phba = vport->phba; long timeout; if (vport->port_type == LPFC_PHYSICAL_PORT) { lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, "1812 vport_delete failed: Cannot delete " "physical host\n"); return VPORT_ERROR; } /* * If we are not unloading the driver then prevent the vport_delete * from happening until after this vport's discovery is finished. */ if (!(phba->pport->load_flag & FC_UNLOADING)) { int check_count = 0; while (check_count < ((phba->fc_ratov * 3) + 3) && vport->port_state > LPFC_VPORT_FAILED && vport->port_state < LPFC_VPORT_READY) { check_count++; msleep(1000); } if (vport->port_state > LPFC_VPORT_FAILED && vport->port_state < LPFC_VPORT_READY) return -EAGAIN; } /* * This is a bit of a mess. We want to ensure the shost doesn't get * torn down until we're done with the embedded lpfc_vport structure. * * Beyond holding a reference for this function, we also need a * reference for outstanding I/O requests we schedule during delete * processing. But once we scsi_remove_host() we can no longer obtain * a reference through scsi_host_get(). * * So we take two references here. We release one reference at the * bottom of the function -- after delinking the vport. And we * release the other at the completion of the unreg_vpi that get's * initiated after we've disposed of all other resources associated * with the port. */ if (!scsi_host_get(shost)) return VPORT_INVAL; if (!scsi_host_get(shost)) { scsi_host_put(shost); return VPORT_INVAL; } spin_lock_irq(&phba->hbalock); vport->load_flag |= FC_UNLOADING; spin_unlock_irq(&phba->hbalock); lpfc_free_sysfs_attr(vport); lpfc_debugfs_terminate(vport); /* Remove FC host and then SCSI host with the vport */ fc_remove_host(lpfc_shost_from_vport(vport)); scsi_remove_host(lpfc_shost_from_vport(vport)); ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); /* In case of driver unload, we shall not perform fabric logo as the * worker thread already stopped at this stage and, in this case, we * can safely skip the fabric logo. */ if (phba->pport->load_flag & FC_UNLOADING) { if (ndlp && NLP_CHK_NODE_ACT(ndlp) && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && phba->link_state >= LPFC_LINK_UP) { /* First look for the Fabric ndlp */ ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) goto skip_logo; else if (!NLP_CHK_NODE_ACT(ndlp)) { ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); if (!ndlp) goto skip_logo; } /* Remove ndlp from vport npld list */ lpfc_dequeue_node(vport, ndlp); /* Indicate free memory when release */ spin_lock_irq(&phba->ndlp_lock); NLP_SET_FREE_REQ(ndlp); spin_unlock_irq(&phba->ndlp_lock); /* Kick off release ndlp when it can be safely done */ lpfc_nlp_put(ndlp); } goto skip_logo; } /* Otherwise, we will perform fabric logo as needed */ if (ndlp && NLP_CHK_NODE_ACT(ndlp) && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && phba->link_state >= LPFC_LINK_UP && phba->fc_topology != TOPOLOGY_LOOP) { if (vport->cfg_enable_da_id) { timeout = msecs_to_jiffies(phba->fc_ratov * 2000); if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0)) while (vport->ct_flags && timeout) timeout = schedule_timeout(timeout); else lpfc_printf_log(vport->phba, KERN_WARNING, LOG_VPORT, "1829 CT command failed to " "delete objects on fabric. \n"); } /* First look for the Fabric ndlp */ ndlp = lpfc_findnode_did(vport, Fabric_DID); if (!ndlp) { /* Cannot find existing Fabric ndlp, allocate one */ ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); if (!ndlp) goto skip_logo; lpfc_nlp_init(vport, ndlp, Fabric_DID); /* Indicate free memory when release */ NLP_SET_FREE_REQ(ndlp); } else { if (!NLP_CHK_NODE_ACT(ndlp)) ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); if (!ndlp) goto skip_logo; /* Remove ndlp from vport npld list */ lpfc_dequeue_node(vport, ndlp); spin_lock_irq(&phba->ndlp_lock); if (!NLP_CHK_FREE_REQ(ndlp)) /* Indicate free memory when release */ NLP_SET_FREE_REQ(ndlp); else { /* Skip this if ndlp is already in free mode */ spin_unlock_irq(&phba->ndlp_lock); goto skip_logo; } spin_unlock_irq(&phba->ndlp_lock); } vport->unreg_vpi_cmpl = VPORT_INVAL; timeout = msecs_to_jiffies(phba->fc_ratov * 2000); if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) goto skip_logo; if (!lpfc_issue_els_npiv_logo(vport, ndlp)) while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout) timeout = schedule_timeout(timeout); } if (!(phba->pport->load_flag & FC_UNLOADING)) lpfc_discovery_wait(vport); skip_logo: lpfc_cleanup(vport); lpfc_sli_host_down(vport); lpfc_stop_vport_timers(vport); if (!(phba->pport->load_flag & FC_UNLOADING)) { lpfc_unreg_all_rpis(vport); lpfc_unreg_default_rpis(vport); /* * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) * does the scsi_host_put() to release the vport. */ if (lpfc_mbx_unreg_vpi(vport)) scsi_host_put(shost); } else scsi_host_put(shost); lpfc_free_vpi(phba, vport->vpi); vport->work_port_events = 0; spin_lock_irq(&phba->hbalock); list_del_init(&vport->listentry); spin_unlock_irq(&phba->hbalock); lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, "1828 Vport Deleted.\n"); scsi_host_put(shost); return VPORT_OK; } struct lpfc_vport ** lpfc_create_vport_work_array(struct lpfc_hba *phba) { struct lpfc_vport *port_iterator; struct lpfc_vport **vports; int index = 0; vports = kzalloc((phba->max_vpi + 1) * sizeof(struct lpfc_vport *), GFP_KERNEL); if (vports == NULL) return NULL; spin_lock_irq(&phba->hbalock); list_for_each_entry(port_iterator, &phba->port_list, listentry) { if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) { lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT, "1801 Create vport work array FAILED: " "cannot do scsi_host_get\n"); continue; } vports[index++] = port_iterator; } spin_unlock_irq(&phba->hbalock); return vports; } void lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports) { int i; if (vports == NULL) return; for (i=0; vports[i] != NULL && i <= phba->max_vpi; i++) scsi_host_put(lpfc_shost_from_vport(vports[i])); kfree(vports); } /** * lpfc_vport_reset_stat_data: Reset the statistical data for the vport. * @vport: Pointer to vport object. * * This function resets the statistical data for the vport. This function * is called with the host_lock held **/ void lpfc_vport_reset_stat_data(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { if (!NLP_CHK_NODE_ACT(ndlp)) continue; if (ndlp->lat_data) memset(ndlp->lat_data, 0, LPFC_MAX_BUCKET_COUNT * sizeof(struct lpfc_scsicmd_bkt)); } } /** * lpfc_alloc_bucket: Allocate data buffer required for collecting * statistical data. * @vport: Pointer to vport object. * * This function allocates data buffer required for all the FC * nodes of the vport to collect statistical data. **/ void lpfc_alloc_bucket(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { if (!NLP_CHK_NODE_ACT(ndlp)) continue; kfree(ndlp->lat_data); ndlp->lat_data = NULL; if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) { ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT, sizeof(struct lpfc_scsicmd_bkt), GFP_ATOMIC); if (!ndlp->lat_data) lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE, "0287 lpfc_alloc_bucket failed to " "allocate statistical data buffer DID " "0x%x\n", ndlp->nlp_DID); } } } /** * lpfc_free_bucket: Free data buffer required for collecting * statistical data. * @vport: Pointer to vport object. * * Th function frees statistical data buffer of all the FC * nodes of the vport. **/ void lpfc_free_bucket(struct lpfc_vport *vport) { struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { if (!NLP_CHK_NODE_ACT(ndlp)) continue; kfree(ndlp->lat_data); ndlp->lat_data = NULL; } }