[SCSI] bfa: Add support to collect / reset fabric stats.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c
index 2109ed3..66349bd 100644 (file)
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -2349,6 +2349,51 @@ out:
        return 0;
 }
 
+int
+bfad_iocmd_vf_get_stats(struct bfad_s *bfad, void *cmd)
+{
+       struct bfa_bsg_vf_stats_s *iocmd =
+                       (struct bfa_bsg_vf_stats_s *)cmd;
+       struct bfa_fcs_fabric_s *fcs_vf;
+       unsigned long   flags;
+
+       spin_lock_irqsave(&bfad->bfad_lock, flags);
+       fcs_vf = bfa_fcs_vf_lookup(&bfad->bfa_fcs, iocmd->vf_id);
+       if (fcs_vf == NULL) {
+               spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+               iocmd->status = BFA_STATUS_UNKNOWN_VFID;
+               goto out;
+       }
+       memcpy((void *)&iocmd->stats, (void *)&fcs_vf->stats,
+               sizeof(struct bfa_vf_stats_s));
+       spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+       iocmd->status = BFA_STATUS_OK;
+out:
+       return 0;
+}
+
+int
+bfad_iocmd_vf_clr_stats(struct bfad_s *bfad, void *cmd)
+{
+       struct bfa_bsg_vf_reset_stats_s *iocmd =
+                       (struct bfa_bsg_vf_reset_stats_s *)cmd;
+       struct bfa_fcs_fabric_s *fcs_vf;
+       unsigned long   flags;
+
+       spin_lock_irqsave(&bfad->bfad_lock, flags);
+       fcs_vf = bfa_fcs_vf_lookup(&bfad->bfa_fcs, iocmd->vf_id);
+       if (fcs_vf == NULL) {
+               spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+               iocmd->status = BFA_STATUS_UNKNOWN_VFID;
+               goto out;
+       }
+       memset((void *)&fcs_vf->stats, 0, sizeof(struct bfa_vf_stats_s));
+       spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+       iocmd->status = BFA_STATUS_OK;
+out:
+       return 0;
+}
+
 static int
 bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
                unsigned int payload_len)
@@ -2661,6 +2706,12 @@ bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
        case IOCMD_QOS_RESET_STATS:
                rc = bfad_iocmd_qos_reset_stats(bfad, iocmd);
                break;
+       case IOCMD_VF_GET_STATS:
+               rc = bfad_iocmd_vf_get_stats(bfad, iocmd);
+               break;
+       case IOCMD_VF_RESET_STATS:
+               rc = bfad_iocmd_vf_clr_stats(bfad, iocmd);
+               break;
        default:
                rc = -EINVAL;
                break;

diff --git a/drivers/scsi/bfa/bfad_bsg.h b/drivers/scsi/bfa/bfad_bsg.h
index 3c0ce22..1e02652 100644 (file)
--- a/drivers/scsi/bfa/bfad_bsg.h
+++ b/drivers/scsi/bfa/bfad_bsg.h
@@ -135,6 +135,8 @@ enum {
        IOCMD_QOS_GET_VC_ATTR,
        IOCMD_QOS_GET_STATS,
        IOCMD_QOS_RESET_STATS,
+       IOCMD_VF_GET_STATS,
+       IOCMD_VF_RESET_STATS,
 };
 
 struct bfa_bsg_gen_s {
@@ -686,6 +688,19 @@ struct bfa_bsg_qos_vc_attr_s {
        struct bfa_qos_vc_attr_s attr;
 };
 
+struct bfa_bsg_vf_stats_s {
+       bfa_status_t    status;
+       u16             bfad_num;
+       u16             vf_id;
+       struct bfa_vf_stats_s   stats;
+};
+
+struct bfa_bsg_vf_reset_stats_s {
+       bfa_status_t    status;
+       u16             bfad_num;
+       u16             vf_id;
+};
+
 struct bfa_bsg_fcpt_s {
        bfa_status_t    status;
        u16             vf_id;