Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
[sfrench/cifs-2.6.git] / drivers / scsi / lpfc / lpfc_hbadisc.c
index 311ed6dea726b49638bdcdf3d8193f4642797b56..e764ce0bf7049e2f074bc8d00e1b8d329504e489 100644 (file)
@@ -78,7 +78,7 @@ lpfc_terminate_rport_io(struct fc_rport *rport)
                return;
        }
 
-       phba  = ndlp->vport->phba;
+       phba  = ndlp->phba;
 
        lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT,
                "rport terminate: sid:x%x did:x%x flg:x%x",
@@ -276,7 +276,7 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
 }
 
 /**
- * lpfc_alloc_fast_evt: Allocates data structure for posting event.
+ * lpfc_alloc_fast_evt - Allocates data structure for posting event
  * @phba: Pointer to hba context object.
  *
  * This function is called from the functions which need to post
@@ -303,7 +303,7 @@ lpfc_alloc_fast_evt(struct lpfc_hba *phba) {
 }
 
 /**
- * lpfc_free_fast_evt: Frees event data structure.
+ * lpfc_free_fast_evt - Frees event data structure
  * @phba: Pointer to hba context object.
  * @evt:  Event object which need to be freed.
  *
@@ -319,7 +319,7 @@ lpfc_free_fast_evt(struct lpfc_hba *phba,
 }
 
 /**
- * lpfc_send_fastpath_evt: Posts events generated from fast path.
+ * lpfc_send_fastpath_evt - Posts events generated from fast path
  * @phba: Pointer to hba context object.
  * @evtp: Event data structure.
  *
@@ -1858,13 +1858,18 @@ lpfc_disable_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
                                NLP_STE_UNUSED_NODE);
 }
 /**
- * lpfc_initialize_node: Initialize all fields of node object.
+ * lpfc_initialize_node - Initialize all fields of node object
  * @vport: Pointer to Virtual Port object.
  * @ndlp: Pointer to FC node object.
  * @did: FC_ID of the node.
- *     This function is always called when node object need to
- * be initialized. It initializes all the fields of the node
- * object.
+ *
+ * This function is always called when node object need to be initialized.
+ * It initializes all the fields of the node object. Although the reference
+ * to phba from @ndlp can be obtained indirectly through it's reference to
+ * @vport, a direct reference to phba is taken here by @ndlp. This is due
+ * to the life-span of the @ndlp might go beyond the existence of @vport as
+ * the final release of ndlp is determined by its reference count. And, the
+ * operation on @ndlp needs the reference to phba.
  **/
 static inline void
 lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
@@ -1877,6 +1882,7 @@ lpfc_initialize_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
        ndlp->nlp_delayfunc.data = (unsigned long)ndlp;
        ndlp->nlp_DID = did;
        ndlp->vport = vport;
+       ndlp->phba = vport->phba;
        ndlp->nlp_sid = NLP_NO_SID;
        kref_init(&ndlp->kref);
        NLP_INT_NODE_ACT(ndlp);
@@ -2086,7 +2092,6 @@ lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
        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);
@@ -2122,19 +2127,9 @@ lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
                }
        }
 
-       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);
-               }
-       }
+       /* Cancel all the IOCBs from the completions list */
+       lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
+                             IOERR_SLI_ABORTED);
 
        return 0;
 }
@@ -2186,9 +2181,13 @@ lpfc_unreg_all_rpis(struct lpfc_vport *vport)
                mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
                mbox->context1 = NULL;
                rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
-               if (rc == MBX_NOT_FINISHED) {
+               if (rc != MBX_TIMEOUT)
                        mempool_free(mbox, phba->mbox_mem_pool);
-               }
+
+               if ((rc == MBX_TIMEOUT) || (rc == MBX_NOT_FINISHED))
+                       lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT,
+                               "1836 Could not issue "
+                               "unreg_login(all_rpis) status %d\n", rc);
        }
 }
 
@@ -2206,12 +2205,14 @@ lpfc_unreg_default_rpis(struct lpfc_vport *vport)
                mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
                mbox->context1 = NULL;
                rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
-               if (rc == MBX_NOT_FINISHED) {
+               if (rc != MBX_TIMEOUT)
+                       mempool_free(mbox, phba->mbox_mem_pool);
+
+               if ((rc == MBX_TIMEOUT) || (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);
-               }
+                                        "unreg_did (default rpis) status %d\n",
+                                        rc);
        }
 }
 
@@ -2470,14 +2471,13 @@ lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did)
                        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.
                         */
                        lpfc_cancel_retry_delay_tmo(vport, ndlp);
+                       spin_lock_irq(shost->host_lock);
+                       ndlp->nlp_flag |= NLP_NPR_2B_DISC;
+                       spin_unlock_irq(shost->host_lock);
                } else
                        ndlp = NULL;
        } else {
@@ -2740,19 +2740,9 @@ lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
        }
        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);
-               }
-       }
+       /* Cancel all the IOCBs from the completions list */
+       lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
+                             IOERR_SLI_ABORTED);
 }
 
 static void
@@ -3173,7 +3163,7 @@ lpfc_nlp_release(struct kref *kref)
        lpfc_nlp_remove(ndlp->vport, ndlp);
 
        /* clear the ndlp active flag for all release cases */
-       phba = ndlp->vport->phba;
+       phba = ndlp->phba;
        spin_lock_irqsave(&phba->ndlp_lock, flags);
        NLP_CLR_NODE_ACT(ndlp);
        spin_unlock_irqrestore(&phba->ndlp_lock, flags);
@@ -3181,7 +3171,7 @@ lpfc_nlp_release(struct kref *kref)
        /* free ndlp memory for final ndlp release */
        if (NLP_CHK_FREE_REQ(ndlp)) {
                kfree(ndlp->lat_data);
-               mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool);
+               mempool_free(ndlp, ndlp->phba->nlp_mem_pool);
        }
 }
 
@@ -3204,7 +3194,7 @@ lpfc_nlp_get(struct lpfc_nodelist *ndlp)
                 * ndlp reference count that is in the process of being
                 * released.
                 */
-               phba = ndlp->vport->phba;
+               phba = ndlp->phba;
                spin_lock_irqsave(&phba->ndlp_lock, flags);
                if (!NLP_CHK_NODE_ACT(ndlp) || NLP_CHK_FREE_ACK(ndlp)) {
                        spin_unlock_irqrestore(&phba->ndlp_lock, flags);
@@ -3240,7 +3230,7 @@ lpfc_nlp_put(struct lpfc_nodelist *ndlp)
        "node put:        did:x%x flg:x%x refcnt:x%x",
                ndlp->nlp_DID, ndlp->nlp_flag,
                atomic_read(&ndlp->kref.refcount));
-       phba = ndlp->vport->phba;
+       phba = ndlp->phba;
        spin_lock_irqsave(&phba->ndlp_lock, flags);
        /* Check the ndlp memory free acknowledge flag to avoid the
         * possible race condition that kref_put got invoked again