1 files changed, 92 insertions, 9 deletions

diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 5c68cdd8736f..d384c16f4a87 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -222,7 +222,7 @@ lpfc_issue_lip(struct Scsi_Host *host)
         pmboxq->mb.mbxCommand = MBX_DOWN_LINK;
         pmboxq->mb.mbxOwner = OWN_HOST;
 
-        mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
+        mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
 
         if ((mbxstatus == MBX_SUCCESS) && (pmboxq->mb.mbxStatus == 0)) {
                 memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
@@ -884,7 +884,7 @@ sysfs_mbox_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
                     phba->sysfs_mbox.mbox   == NULL ) {
                         sysfs_mbox_idle(phba);
                         spin_unlock_irq(host->host_lock);
-                        return -EINVAL;
+                        return -EAGAIN;
                 }
         }
 
@@ -1000,14 +1000,15 @@ sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
                         spin_unlock_irq(phba->host->host_lock);
                         rc = lpfc_sli_issue_mbox_wait (phba,
                                                        phba->sysfs_mbox.mbox,
-                                                       phba->fc_ratov * 2);
+                                lpfc_mbox_tmo_val(phba,
+                                    phba->sysfs_mbox.mbox->mb.mbxCommand) * HZ);
                         spin_lock_irq(phba->host->host_lock);
                 }
 
                 if (rc != MBX_SUCCESS) {
                         sysfs_mbox_idle(phba);
                         spin_unlock_irq(host->host_lock);
-                        return -ENODEV;
+                        return  (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
                 }
                 phba->sysfs_mbox.state = SMBOX_READING;
         }
@@ -1016,7 +1017,7 @@ sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
                 printk(KERN_WARNING  "mbox_read: Bad State\n");
                 sysfs_mbox_idle(phba);
                 spin_unlock_irq(host->host_lock);
-                return -EINVAL;
+                return -EAGAIN;
         }
 
         memcpy(buf, (uint8_t *) & phba->sysfs_mbox.mbox->mb + off, count);
@@ -1210,8 +1211,10 @@ lpfc_get_stats(struct Scsi_Host *shost)
         struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata;
         struct lpfc_sli *psli = &phba->sli;
         struct fc_host_statistics *hs = &phba->link_stats;
+        struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
         LPFC_MBOXQ_t *pmboxq;
         MAILBOX_t *pmb;
+        unsigned long seconds;
         int rc = 0;
 
         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
@@ -1272,22 +1275,103 @@ lpfc_get_stats(struct Scsi_Host *shost)
         hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
         hs->error_frames = pmb->un.varRdLnk.crcCnt;
 
+        hs->link_failure_count -= lso->link_failure_count;
+        hs->loss_of_sync_count -= lso->loss_of_sync_count;
+        hs->loss_of_signal_count -= lso->loss_of_signal_count;
+        hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
+        hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
+        hs->invalid_crc_count -= lso->invalid_crc_count;
+        hs->error_frames -= lso->error_frames;
+
         if (phba->fc_topology == TOPOLOGY_LOOP) {
                 hs->lip_count = (phba->fc_eventTag >> 1);
+                hs->lip_count -= lso->link_events;
                 hs->nos_count = -1;
         } else {
                 hs->lip_count = -1;
                 hs->nos_count = (phba->fc_eventTag >> 1);
+                hs->nos_count -= lso->link_events;
         }
 
         hs->dumped_frames = -1;
 
-/* FIX ME */
-        /*hs->SecondsSinceLastReset = (jiffies - lpfc_loadtime) / HZ;*/
+        seconds = get_seconds();
+        if (seconds < psli->stats_start)
+                hs->seconds_since_last_reset = seconds +
+                                ((unsigned long)-1 - psli->stats_start);
+        else
+                hs->seconds_since_last_reset = seconds - psli->stats_start;
 
         return hs;
 }
 
+static void
+lpfc_reset_stats(struct Scsi_Host *shost)
+{
+        struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata;
+        struct lpfc_sli *psli = &phba->sli;
+        struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
+        LPFC_MBOXQ_t *pmboxq;
+        MAILBOX_t *pmb;
+        int rc = 0;
+
+        pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+        if (!pmboxq)
+                return;
+        memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
+
+        pmb = &pmboxq->mb;
+        pmb->mbxCommand = MBX_READ_STATUS;
+        pmb->mbxOwner = OWN_HOST;
+        pmb->un.varWords[0] = 0x1; /* reset request */
+        pmboxq->context1 = NULL;
+
+        if ((phba->fc_flag & FC_OFFLINE_MODE) ||
+                (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
+                rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
+        else
+                rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
+
+        if (rc != MBX_SUCCESS) {
+                if (rc == MBX_TIMEOUT)
+                        pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+                else
+                        mempool_free(pmboxq, phba->mbox_mem_pool);
+                return;
+        }
+
+        memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
+        pmb->mbxCommand = MBX_READ_LNK_STAT;
+        pmb->mbxOwner = OWN_HOST;
+        pmboxq->context1 = NULL;
+
+        if ((phba->fc_flag & FC_OFFLINE_MODE) ||
+            (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
+                rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
+        else
+                rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
+
+        if (rc != MBX_SUCCESS) {
+                if (rc == MBX_TIMEOUT)
+                        pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+                else
+                        mempool_free( pmboxq, phba->mbox_mem_pool);
+                return;
+        }
+
+        lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
+        lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
+        lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
+        lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
+        lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
+        lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
+        lso->error_frames = pmb->un.varRdLnk.crcCnt;
+        lso->link_events = (phba->fc_eventTag >> 1);
+
+        psli->stats_start = get_seconds();
+
+        return;
+}
 
 /*
  * The LPFC driver treats linkdown handling as target loss events so there
@@ -1431,8 +1515,7 @@ struct fc_function_template lpfc_transport_functions = {
          */
 
         .get_fc_host_stats = lpfc_get_stats,
-
-        /* the LPFC driver doesn't support resetting stats yet */
+        .reset_fc_host_stats = lpfc_reset_stats,
 
         .dd_fcrport_size = sizeof(struct lpfc_rport_data),
         .show_rport_maxframe_size = 1,