From 549e55cd2a1b83ea45ac17fb6c309654a3d371a4 Mon Sep 17 00:00:00 2001 From: James Smart Date: Thu, 2 Aug 2007 11:09:51 -0400 Subject: [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 Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc_hbadisc.c | 157 +++++++++++++++++---------------------- 1 file changed, 70 insertions(+), 87 deletions(-) (limited to 'drivers/scsi/lpfc/lpfc_hbadisc.c') diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index ea27bbb8155..556d55fc945 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -349,7 +349,8 @@ lpfc_work_done(struct lpfc_hba *phba) { struct lpfc_sli_ring *pring; uint32_t ha_copy, status, control, work_port_events; - struct lpfc_vport *vport; + struct lpfc_vport **vports; + int i; spin_lock_irq(&phba->hbalock); ha_copy = phba->work_ha; @@ -364,48 +365,31 @@ lpfc_work_done(struct lpfc_hba *phba) if (ha_copy & HA_LATT) lpfc_handle_latt(phba); - - spin_lock_irq(&phba->hbalock); - list_for_each_entry(vport, &phba->port_list, listentry) { - struct Scsi_Host *shost = lpfc_shost_from_vport(vport); - - if (!scsi_host_get(shost)) { - continue; + vports = lpfc_create_vport_work_array(phba); + if (vports != NULL) + for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { + work_port_events = vports[i]->work_port_events; + if (work_port_events & WORKER_DISC_TMO) + lpfc_disc_timeout_handler(vports[i]); + if (work_port_events & WORKER_ELS_TMO) + lpfc_els_timeout_handler(vports[i]); + 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(vports[i]); + 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(&vports[i]->work_port_lock); + vports[i]->work_port_events &= ~work_port_events; + spin_unlock_irq(&vports[i]->work_port_lock); } - spin_unlock_irq(&phba->hbalock); - 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); - scsi_host_put(shost); - spin_lock_irq(&phba->hbalock); - } - spin_unlock_irq(&phba->hbalock); + lpfc_destroy_vport_work_array(vports); pring = &phba->sli.ring[LPFC_ELS_RING]; status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); @@ -448,32 +432,22 @@ static int check_work_wait_done(struct lpfc_hba *phba) { struct lpfc_vport *vport; - struct lpfc_sli_ring *pring; + 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; - goto exit; + break; } } - - if (phba->work_ha || (!list_empty(&phba->work_list)) || - kthread_should_stop()) { - rc = 1; - goto exit; - } - - pring = &phba->sli.ring[LPFC_ELS_RING]; - if (pring->flag & LPFC_DEFERRED_RING_EVENT) + if (rc || phba->work_ha || (!list_empty(&phba->work_list)) || + kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) { rc = 1; -exit: - if (rc) phba->work_found++; - else + } else phba->work_found = 0; - spin_unlock_irq(&phba->hbalock); return rc; } @@ -601,7 +575,6 @@ lpfc_linkdown_port(struct lpfc_vport *vport) /* free any ndlp's on unused list */ list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) - /* free any ndlp's in unused state */ if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) lpfc_drop_node(vport, ndlp); @@ -614,8 +587,9 @@ lpfc_linkdown(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 lpfc_vport **vports; LPFC_MBOXQ_t *mb; + int i; if (phba->link_state == LPFC_LINK_DOWN) { return 0; @@ -626,13 +600,13 @@ lpfc_linkdown(struct lpfc_hba *phba) phba->pport->fc_flag &= ~FC_LBIT; } spin_unlock_irq(&phba->hbalock); - - list_for_each_entry(port_iterator, &phba->port_list, listentry) { - - /* Issue a LINK DOWN event to all nodes */ - lpfc_linkdown_port(port_iterator); - } - + 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) { @@ -733,7 +707,8 @@ lpfc_linkup_port(struct lpfc_vport *vport) static int lpfc_linkup(struct lpfc_hba *phba) { - struct lpfc_vport *vport; + struct lpfc_vport **vports; + int i; phba->link_state = LPFC_LINK_UP; @@ -741,9 +716,11 @@ lpfc_linkup(struct lpfc_hba *phba) clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); del_timer_sync(&phba->fabric_block_timer); - list_for_each_entry(vport, &phba->port_list, listentry) { - lpfc_linkup_port(vport); - } + 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); @@ -1298,15 +1275,15 @@ void lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) { struct lpfc_vport *vport = pmb->vport; - struct lpfc_vport *next_vport; MAILBOX_t *mb = &pmb->mb; struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); struct lpfc_nodelist *ndlp; - ndlp = (struct lpfc_nodelist *) pmb->context2; + 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); @@ -1337,21 +1314,27 @@ lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) lpfc_nlp_put(ndlp); /* Drop the reference from the mbox */ if (vport->port_state == LPFC_FABRIC_CFG_LINK) { - list_for_each_entry(next_vport, &phba->port_list, listentry) { - if (next_vport->port_type == LPFC_PHYSICAL_PORT) - continue; - - if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) - lpfc_initial_fdisc(next_vport); - else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) { - lpfc_vport_set_state(vport, - FC_VPORT_NO_FABRIC_SUPP); - lpfc_printf_log(phba, KERN_ERR, LOG_ELS, - "%d (%d):0259 No NPIV Fabric " - "support\n", - phba->brd_no, vport->vpi); + 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_log(phba, KERN_ERR, LOG_ELS, + "%d (%d):0259 No NPIV " + "Fabric support\n", + phba->brd_no, + vports[i]->vpi); + } } - } + lpfc_destroy_vport_work_array(vports); lpfc_do_scr_ns_plogi(phba, vport); } -- cgit v1.2.3-70-g09d2