[SCSI] lpfc 8.1.7 : Add statistics reset callback for FC transport
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 5c68cdd..762d623 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -1210,8 +1210,10 @@
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 +1274,103 @@
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 +1514,7 @@
*/
.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,