diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_vport.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_vport.c | 456 |
1 files changed, 394 insertions, 62 deletions
diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c index dcb415e717c..a87ee33f4f2 100644 --- a/drivers/scsi/lpfc/lpfc_vport.c +++ b/drivers/scsi/lpfc/lpfc_vport.c @@ -1,7 +1,7 @@ /******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * - * Copyright (C) 2004-2006 Emulex. All rights reserved. * + * Copyright (C) 2004-2013 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * * www.emulex.com * * Portions Copyright (C) 2004-2005 Christoph Hellwig * @@ -26,14 +26,18 @@ #include <linux/interrupt.h> #include <linux/kthread.h> #include <linux/pci.h> +#include <linux/slab.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_hw4.h" #include "lpfc_hw.h" #include "lpfc_sli.h" +#include "lpfc_sli4.h" +#include "lpfc_nl.h" #include "lpfc_disc.h" #include "lpfc_scsi.h" #include "lpfc.h" @@ -76,10 +80,10 @@ inline void lpfc_vport_set_state(struct lpfc_vport *vport, } } -static int +int lpfc_alloc_vpi(struct lpfc_hba *phba) { - int vpi; + unsigned long vpi; spin_lock_irq(&phba->hbalock); /* Start at bit 1 because vpi zero is reserved for the physical port */ @@ -88,6 +92,8 @@ lpfc_alloc_vpi(struct lpfc_hba *phba) vpi = 0; else set_bit(vpi, phba->vpi_bmask); + if (phba->sli_rev == LPFC_SLI_REV4) + phba->sli4_hba.max_cfg_param.vpi_used++; spin_unlock_irq(&phba->hbalock); return vpi; } @@ -95,8 +101,12 @@ lpfc_alloc_vpi(struct lpfc_hba *phba) static void lpfc_free_vpi(struct lpfc_hba *phba, int vpi) { + if (vpi == 0) + return; spin_lock_irq(&phba->hbalock); clear_bit(vpi, phba->vpi_bmask); + if (phba->sli_rev == LPFC_SLI_REV4) + phba->sli4_hba.max_cfg_param.vpi_used--; spin_unlock_irq(&phba->hbalock); } @@ -112,9 +122,14 @@ lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport) if (!pmb) { return -ENOMEM; } - mb = &pmb->mb; + mb = &pmb->u.mb; + + rc = lpfc_read_sparam(phba, pmb, vport->vpi); + if (rc) { + mempool_free(pmb, phba->mbox_mem_pool); + return -ENOMEM; + } - lpfc_read_sparam(phba, pmb, vport->vpi); /* * Grab buffer pointer and clear context1 so we can use * lpfc_sli_issue_box_wait @@ -125,15 +140,26 @@ lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport) pmb->vport = vport; rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2); if (rc != MBX_SUCCESS) { - 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; + 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)); @@ -193,6 +219,74 @@ lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport) 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_vlog(vport, KERN_INFO, LOG_VPORT, + "1833 Vport discovery quiesce Wait:" + " state x%x fc_flags x%x" + " num_nodes x%x, waiting 1000 msecs" + " total wait msecs x%x\n", + 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_vlog(vport, KERN_INFO, LOG_VPORT, + "1834 Vport discovery quiesced:" + " state x%x fc_flags x%x" + " wait msecs x%x\n", + vport->port_state, vport->fc_flag, + jiffies_to_msecs(jiffies + - start_time)); + break; + } + } + + if (time_after(jiffies, wait_time_max)) + lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, + "1835 Vport discovery quiesce failed:" + " state x%x fc_flags x%x wait msecs x%x\n", + vport->port_state, vport->fc_flag, + jiffies_to_msecs(jiffies - start_time)); +} + int lpfc_vport_create(struct fc_vport *fc_vport, bool disable) { @@ -204,9 +298,9 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable) int instance; int vpi; int rc = VPORT_ERROR; + int status; - if ((phba->sli_rev < 3) || - !(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { + 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", @@ -225,7 +319,6 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable) goto error_out; } - /* Assign an unused board number */ if ((instance = lpfc_get_instance()) < 0) { lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, @@ -248,23 +341,24 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable) vport->vpi = vpi; lpfc_debugfs_initialize(vport); - if (lpfc_vport_sparm(phba, vport)) { - lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, - "1813 Create VPORT failed. " - "Cannot get sparam\n"); + 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); - rc = VPORT_NORESOURCES; 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); + u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn); + 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); @@ -290,17 +384,51 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable) goto error_out; } + /* Create binary sysfs attribute for vport */ + lpfc_alloc_sysfs_attr(vport); + + /* Set the DFT_LUN_Q_DEPTH accordingly */ + vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth; + *(struct lpfc_vport **)fc_vport->dd_data = vport; vport->fc_vport = fc_vport; + /* + * In SLI4, the vpi must be activated before it can be used + * by the port. + */ + if ((phba->sli_rev == LPFC_SLI_REV4) && + (pport->fc_flag & FC_VFI_REGISTERED)) { + rc = lpfc_sli4_init_vpi(vport); + if (rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, + "1838 Failed to INIT_VPI on vpi %d " + "status %d\n", vpi, rc); + rc = VPORT_NORESOURCES; + lpfc_free_vpi(phba, vpi); + goto error_out; + } + } else if (phba->sli_rev == LPFC_SLI_REV4) { + /* + * Driver cannot INIT_VPI now. Set the flags to + * init_vpi when reg_vfi complete. + */ + vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; + lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); + rc = VPORT_OK; + goto out; + } + if ((phba->link_state < LPFC_LINK_UP) || - (phba->fc_topology == TOPOLOGY_LOOP)) { + (pport->port_state < LPFC_FABRIC_CFG_LINK) || + (phba->fc_topology == LPFC_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; } @@ -309,7 +437,8 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable) * up and ready to FDISC. */ ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); - if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { + 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); @@ -338,9 +467,11 @@ disable_vport(struct fc_vport *fc_vport) struct lpfc_hba *phba = vport->phba; struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; long timeout; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); ndlp = lpfc_findnode_did(vport, Fabric_DID); - if (ndlp && phba->link_state >= LPFC_LINK_UP) { + 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)) @@ -354,6 +485,8 @@ disable_vport(struct fc_vport *fc_vport) * 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, @@ -369,6 +502,9 @@ disable_vport(struct fc_vport *fc_vport) * scsi_host_put() to release the vport. */ lpfc_mbx_unreg_vpi(vport); + spin_lock_irq(shost->host_lock); + vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI; + spin_unlock_irq(shost->host_lock); lpfc_vport_set_state(vport, FC_VPORT_DISABLED); lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, @@ -382,21 +518,25 @@ 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; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); if ((phba->link_state < LPFC_LINK_UP) || - (phba->fc_topology == TOPOLOGY_LOOP)) { + (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) { lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); return VPORT_OK; } + spin_lock_irq(shost->host_lock); vport->load_flag |= FC_LOADING; vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; + spin_unlock_irq(shost->host_lock); /* 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 && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { + 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); @@ -427,11 +567,11 @@ int lpfc_vport_delete(struct fc_vport *fc_vport) { struct lpfc_nodelist *ndlp = NULL; - struct lpfc_nodelist *next_ndlp; 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; + bool ns_ndlp_referenced = false; if (vport->port_type == LPFC_PHYSICAL_PORT) { lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, @@ -439,6 +579,18 @@ lpfc_vport_delete(struct fc_vport *fc_vport) "physical host\n"); return VPORT_ERROR; } + + /* If the vport is a static vport fail the deletion. */ + if ((vport->vport_flag & STATIC_VPORT) && + !(phba->pport->load_flag & FC_UNLOADING)) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, + "1837 vport_delete failed: Cannot delete " + "static vport.\n"); + return VPORT_ERROR; + } + spin_lock_irq(&phba->hbalock); + vport->load_flag |= FC_UNLOADING; + spin_unlock_irq(&phba->hbalock); /* * If we are not unloading the driver then prevent the vport_delete * from happening until after this vport's discovery is finished. @@ -470,20 +622,81 @@ lpfc_vport_delete(struct fc_vport *fc_vport) * initiated after we've disposed of all other resources associated * with the port. */ - if (!scsi_host_get(shost) || !scsi_host_get(shost)) + if (!scsi_host_get(shost)) return VPORT_INVAL; - spin_lock_irq(&phba->hbalock); - vport->load_flag |= FC_UNLOADING; - spin_unlock_irq(&phba->hbalock); - kfree(vport->vname); + if (!scsi_host_get(shost)) { + scsi_host_put(shost); + return VPORT_INVAL; + } + lpfc_free_sysfs_attr(vport); + lpfc_debugfs_terminate(vport); + + /* + * The call to fc_remove_host might release the NameServer ndlp. Since + * we might need to use the ndlp to send the DA_ID CT command, + * increment the reference for the NameServer ndlp to prevent it from + * being released. + */ + ndlp = lpfc_findnode_did(vport, NameServer_DID); + if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { + lpfc_nlp_get(ndlp); + ns_ndlp_referenced = true; + } + + /* 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); - if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && - phba->link_state >= LPFC_LINK_UP) { + /* 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 != LPFC_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) { @@ -492,9 +705,40 @@ lpfc_vport_delete(struct fc_vport *fc_vport) 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 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); + } + + /* + * If the vpi is not registered, then a valid FDISC doesn't + * exist and there is no need for a ELS LOGO. Just cleanup + * the ndlp. + */ + if (!(vport->vpi_state & LPFC_VPI_REGISTERED)) { + lpfc_nlp_put(ndlp); + goto skip_logo; } + vport->unreg_vpi_cmpl = VPORT_INVAL; timeout = msecs_to_jiffies(phba->fc_ratov * 2000); if (!lpfc_issue_els_npiv_logo(vport, ndlp)) @@ -502,24 +746,36 @@ lpfc_vport_delete(struct fc_vport *fc_vport) timeout = schedule_timeout(timeout); } + if (!(phba->pport->load_flag & FC_UNLOADING)) + lpfc_discovery_wait(vport); + skip_logo: - lpfc_sli_host_down(vport); - list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { - lpfc_disc_state_machine(vport, ndlp, NULL, - NLP_EVT_DEVICE_RECOVERY); - lpfc_disc_state_machine(vport, ndlp, NULL, - NLP_EVT_DEVICE_RM); + /* + * If the NameServer ndlp has been incremented to allow the DA_ID CT + * command to be sent, decrement the ndlp now. + */ + if (ns_ndlp_referenced) { + ndlp = lpfc_findnode_did(vport, NameServer_DID); + lpfc_nlp_put(ndlp); } + lpfc_cleanup(vport); + lpfc_sli_host_down(vport); + 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); + + 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; @@ -532,23 +788,22 @@ skip_logo: return VPORT_OK; } -EXPORT_SYMBOL(lpfc_vport_create); -EXPORT_SYMBOL(lpfc_vport_delete); - 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(LPFC_MAX_VPORTS * sizeof(struct lpfc_vport *), + vports = kzalloc((phba->max_vports + 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 (port_iterator->load_flag & FC_UNLOADING) + continue; if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) { - lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT, + lpfc_printf_vlog(port_iterator, KERN_ERR, LOG_VPORT, "1801 Create vport work array FAILED: " "cannot do scsi_host_get\n"); continue; @@ -560,12 +815,89 @@ lpfc_create_vport_work_array(struct lpfc_hba *phba) } void -lpfc_destroy_vport_work_array(struct lpfc_vport **vports) +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 < LPFC_MAX_VPORTS; i++) + for (i = 0; i <= phba->max_vports && vports[i] != NULL; 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 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 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; + } +} |