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qla2xxx: Add support for Private link statistics counters.

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Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Harish Zunjarrao
2016-01-27 12:03:33 -05:00
committed by Martin K. Petersen
parent 969a619966
commit 243de6768d
6 changed files with 99 additions and 6 deletions
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61
drivers/scsi/qla2xxx/qla_bsg.c
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@@ -2232,6 +2232,64 @@ qla27xx_get_bbcr_data(struct fc_bsg_job *bsg_job)
return 0;
}
static int
qla2x00_get_priv_stats(struct fc_bsg_job *bsg_job)
{
struct Scsi_Host *host = bsg_job->shost;
scsi_qla_host_t *vha = shost_priv(host);
struct qla_hw_data *ha = vha->hw;
struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
struct link_statistics *stats = NULL;
dma_addr_t stats_dma;
int rval = QLA_FUNCTION_FAILED;
if (test_bit(UNLOADING, &vha->dpc_flags))
goto done;
if (unlikely(pci_channel_offline(ha->pdev)))
goto done;
if (qla2x00_reset_active(vha))
goto done;
if (!IS_FWI2_CAPABLE(ha))
goto done;
stats = dma_alloc_coherent(&ha->pdev->dev,
sizeof(struct link_statistics), &stats_dma, GFP_KERNEL);
if (!stats) {
ql_log(ql_log_warn, vha, 0x70e2,
"Failed to allocate memory for stats.\n");
goto done;
}
memset(stats, 0, sizeof(struct link_statistics));
rval = qla24xx_get_isp_stats(base_vha, stats, stats_dma);
if (rval != QLA_SUCCESS)
goto done_free;
ql_dump_buffer(ql_dbg_user + ql_dbg_verbose, vha, 0x70e3,
(uint8_t *)stats, sizeof(struct link_statistics));
sg_copy_from_buffer(bsg_job->reply_payload.sg_list,
bsg_job->reply_payload.sg_cnt, stats, sizeof(struct link_statistics));
bsg_job->reply->reply_payload_rcv_len = sizeof(struct link_statistics);
bsg_job->reply->reply_data.vendor_reply.vendor_rsp[0] = EXT_STATUS_OK;
bsg_job->reply_len = sizeof(struct fc_bsg_reply);
bsg_job->reply->result = DID_OK << 16;
bsg_job->job_done(bsg_job);
done_free:
dma_free_coherent(&ha->pdev->dev, sizeof(struct link_statistics),
stats, stats_dma);
done:
return rval;
}
static int
qla2x00_process_vendor_specific(struct fc_bsg_job *bsg_job)
{
@@ -2296,6 +2354,9 @@ qla2x00_process_vendor_specific(struct fc_bsg_job *bsg_job)
case QL_VND_GET_BBCR_DATA:
return qla27xx_get_bbcr_data(bsg_job);
case QL_VND_GET_PRIV_STATS:
return qla2x00_get_priv_stats(bsg_job);
default:
return -ENOSYS;
}