diff options
author | James Smart <James.Smart@Emulex.Com> | 2007-08-02 15:09:51 (GMT) |
---|---|---|
committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-08-01 17:18:23 (GMT) |
commit | 549e55cd2a1b83ea45ac17fb6c309654a3d371a4 (patch) | |
tree | 0abf10a28b177e129932c62b3b94994ce4f3aadb /drivers/scsi/lpfc/lpfc_init.c | |
parent | a58cbd5212fff2d4bba0bf58e778f02069597294 (diff) | |
download | linux-fsl-qoriq-549e55cd2a1b83ea45ac17fb6c309654a3d371a4.tar.xz |
[SCSI] lpfc 8.2.2 : Fix locking around HBA's port_list
Cleans up a lot of bad behaviors that have been in this area a while
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_init.c')
-rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 134 |
1 files changed, 75 insertions, 59 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 07bd0dc..484070c 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -437,16 +437,18 @@ lpfc_config_port_post(struct lpfc_hba *phba) int lpfc_hba_down_prep(struct lpfc_hba *phba) { - struct lpfc_vport *vport = phba->pport; + struct lpfc_vport **vports; + int i; /* Disable interrupts */ writel(0, phba->HCregaddr); readl(phba->HCregaddr); /* flush */ - list_for_each_entry(vport, &phba->port_list, listentry) { - lpfc_cleanup_discovery_resources(vport); - } - + vports = lpfc_create_vport_work_array(phba); + if (vports != NULL) + for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) + lpfc_cleanup_discovery_resources(vports[i]); + lpfc_destroy_vport_work_array(vports); return 0; } @@ -615,9 +617,10 @@ lpfc_handle_eratt(struct lpfc_hba *phba) struct lpfc_vport *vport = phba->pport; struct lpfc_sli *psli = &phba->sli; struct lpfc_sli_ring *pring; - struct lpfc_vport *port_iterator; + struct lpfc_vport **vports; uint32_t event_data; struct Scsi_Host *shost; + int i; /* If the pci channel is offline, ignore possible errors, * since we cannot communicate with the pci card anyway. */ @@ -632,14 +635,17 @@ lpfc_handle_eratt(struct lpfc_hba *phba) "Data: x%x x%x x%x\n", phba->brd_no, phba->work_hs, phba->work_status[0], phba->work_status[1]); - list_for_each_entry(port_iterator, &phba->port_list, - listentry) { - shost = lpfc_shost_from_vport(port_iterator); - - spin_lock_irq(shost->host_lock); - port_iterator->fc_flag |= FC_ESTABLISH_LINK; - spin_unlock_irq(shost->host_lock); - } + vports = lpfc_create_vport_work_array(phba); + if (vports != NULL) + for(i = 0; + i < LPFC_MAX_VPORTS && vports[i] != NULL; + i++){ + shost = lpfc_shost_from_vport(vports[i]); + spin_lock_irq(shost->host_lock); + vports[i]->fc_flag |= FC_ESTABLISH_LINK; + spin_unlock_irq(shost->host_lock); + } + lpfc_destroy_vport_work_array(vports); spin_lock_irq(&phba->hbalock); psli->sli_flag &= ~LPFC_SLI2_ACTIVE; spin_unlock_irq(&phba->hbalock); @@ -708,7 +714,6 @@ lpfc_handle_latt(struct lpfc_hba *phba) { struct lpfc_vport *vport = phba->pport; struct lpfc_sli *psli = &phba->sli; - struct lpfc_vport *port_iterator; LPFC_MBOXQ_t *pmb; volatile uint32_t control; struct lpfc_dmabuf *mp; @@ -729,8 +734,7 @@ lpfc_handle_latt(struct lpfc_hba *phba) rc = -EIO; /* Cleanup any outstanding ELS commands */ - list_for_each_entry(port_iterator, &phba->port_list, listentry) - lpfc_els_flush_cmd(port_iterator); + lpfc_els_flush_all_cmd(phba); psli->slistat.link_event++; lpfc_read_la(phba, pmb, mp); @@ -1313,22 +1317,26 @@ static void lpfc_establish_link_tmo(unsigned long ptr) { struct lpfc_hba *phba = (struct lpfc_hba *) ptr; - struct lpfc_vport *vport = phba->pport; + struct lpfc_vport **vports; unsigned long iflag; + int i; /* Re-establishing Link, timer expired */ lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, "%d:1300 Re-establishing Link, timer expired " "Data: x%x x%x\n", - phba->brd_no, vport->fc_flag, - vport->port_state); - list_for_each_entry(vport, &phba->port_list, listentry) { - struct Scsi_Host *shost = lpfc_shost_from_vport(vport); - - spin_lock_irqsave(shost->host_lock, iflag); - vport->fc_flag &= ~FC_ESTABLISH_LINK; - spin_unlock_irqrestore(shost->host_lock, iflag); - } + phba->brd_no, phba->pport->fc_flag, + phba->pport->port_state); + vports = lpfc_create_vport_work_array(phba); + if (vports != NULL) + for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { + struct Scsi_Host *shost; + shost = lpfc_shost_from_vport(vports[i]); + spin_lock_irqsave(shost->host_lock, iflag); + vports[i]->fc_flag &= ~FC_ESTABLISH_LINK; + spin_unlock_irqrestore(shost->host_lock, iflag); + } + lpfc_destroy_vport_work_array(vports); } void @@ -1343,12 +1351,16 @@ lpfc_stop_vport_timers(struct lpfc_vport *vport) static void lpfc_stop_phba_timers(struct lpfc_hba *phba) { - struct lpfc_vport *vport; + struct lpfc_vport **vports; + int i; del_timer_sync(&phba->fcp_poll_timer); del_timer_sync(&phba->fc_estabtmo); - list_for_each_entry(vport, &phba->port_list, listentry) - lpfc_stop_vport_timers(vport); + vports = lpfc_create_vport_work_array(phba); + if (vports != NULL) + for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) + lpfc_stop_vport_timers(vports[i]); + lpfc_destroy_vport_work_array(vports); del_timer_sync(&phba->sli.mbox_tmo); del_timer_sync(&phba->fabric_block_timer); phba->hb_outstanding = 0; @@ -1360,6 +1372,8 @@ int lpfc_online(struct lpfc_hba *phba) { struct lpfc_vport *vport = phba->pport; + struct lpfc_vport **vports; + int i; if (!phba) return 0; @@ -1383,14 +1397,18 @@ lpfc_online(struct lpfc_hba *phba) return 1; } - list_for_each_entry(vport, &phba->port_list, listentry) { - struct Scsi_Host *shost = lpfc_shost_from_vport(vport); - spin_lock_irq(shost->host_lock); - vport->fc_flag &= ~FC_OFFLINE_MODE; - if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) - vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; - spin_unlock_irq(shost->host_lock); - } + vports = lpfc_create_vport_work_array(phba); + if (vports != NULL) + for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { + struct Scsi_Host *shost; + shost = lpfc_shost_from_vport(vports[i]); + spin_lock_irq(shost->host_lock); + vports[i]->fc_flag &= ~FC_OFFLINE_MODE; + if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) + vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI; + spin_unlock_irq(shost->host_lock); + } + lpfc_destroy_vport_work_array(vports); lpfc_unblock_mgmt_io(phba); return 0; @@ -1440,39 +1458,35 @@ lpfc_offline_prep(struct lpfc_hba * phba) void lpfc_offline(struct lpfc_hba *phba) { - struct lpfc_vport *vport = phba->pport; - struct Scsi_Host *shost = lpfc_shost_from_vport(vport); - struct lpfc_vport *port_iterator; + struct Scsi_Host *shost; + struct lpfc_vport **vports; + int i; - if (vport->fc_flag & FC_OFFLINE_MODE) + if (phba->pport->fc_flag & FC_OFFLINE_MODE) return; /* stop all timers associated with this hba */ lpfc_stop_phba_timers(phba); - list_for_each_entry(port_iterator, &phba->port_list, listentry) { - port_iterator->work_port_events = 0; - } - lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "%d:0460 Bring Adapter offline\n", phba->brd_no); - /* Bring down the SLI Layer and cleanup. The HBA is offline now. */ lpfc_sli_hba_down(phba); spin_lock_irq(&phba->hbalock); phba->work_ha = 0; - vport->fc_flag |= FC_OFFLINE_MODE; spin_unlock_irq(&phba->hbalock); - list_for_each_entry(port_iterator, &phba->port_list, listentry) { - shost = lpfc_shost_from_vport(port_iterator); - - lpfc_cleanup(port_iterator); - spin_lock_irq(shost->host_lock); - vport->work_port_events = 0; - vport->fc_flag |= FC_OFFLINE_MODE; - spin_unlock_irq(shost->host_lock); - } + vports = lpfc_create_vport_work_array(phba); + if (vports != NULL) + for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { + shost = lpfc_shost_from_vport(vports[i]); + lpfc_cleanup(vports[i]); + spin_lock_irq(shost->host_lock); + vports[i]->work_port_events = 0; + vports[i]->fc_flag |= FC_OFFLINE_MODE; + spin_unlock_irq(shost->host_lock); + } + lpfc_destroy_vport_work_array(vports); } /****************************************************************************** @@ -1509,7 +1523,6 @@ lpfc_scsi_free(struct lpfc_hba *phba) return 0; } - struct lpfc_vport * lpfc_create_port(struct lpfc_hba *phba, int instance, struct fc_vport *fc_vport) { @@ -1570,7 +1583,9 @@ lpfc_create_port(struct lpfc_hba *phba, int instance, struct fc_vport *fc_vport) if (error) goto out_put_shost; + spin_lock_irq(&phba->hbalock); list_add_tail(&vport->listentry, &phba->port_list); + spin_unlock_irq(&phba->hbalock); return vport; out_put_shost: @@ -1990,8 +2005,10 @@ lpfc_pci_remove_one(struct pci_dev *pdev) struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; struct lpfc_hba *phba = vport->phba; struct lpfc_vport *port_iterator; + spin_lock_irq(&phba->hbalock); list_for_each_entry(port_iterator, &phba->port_list, listentry) port_iterator->load_flag |= FC_UNLOADING; + spin_unlock_irq(&phba->hbalock); kfree(vport->vname); lpfc_free_sysfs_attr(vport); @@ -2012,7 +2029,6 @@ lpfc_pci_remove_one(struct pci_dev *pdev) list_del_init(&vport->listentry); spin_unlock_irq(&phba->hbalock); - lpfc_debugfs_terminate(vport); lpfc_cleanup(vport); |