[SCSI] bfa: Added support to collect and reset fcport stats
- Added support to collect and reset fcport stats.
- Modified design to allow multiple requests for fcport stats.
- fcport will remember the stats request in its stats_pending
queue and service each of the queued requests after receiving
a firmware response for the prior request.
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 26def66..0d920ed 100644
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -2023,6 +2023,55 @@
return 0;
}
+int
+bfad_iocmd_fcport_get_stats(struct bfad_s *bfad, void *cmd)
+{
+ struct bfa_bsg_fcport_stats_s *iocmd =
+ (struct bfa_bsg_fcport_stats_s *)cmd;
+ struct bfad_hal_comp fcomp;
+ unsigned long flags;
+ struct bfa_cb_pending_q_s cb_qe;
+
+ init_completion(&fcomp.comp);
+ bfa_pending_q_init(&cb_qe, (bfa_cb_cbfn_t)bfad_hcb_comp,
+ &fcomp, &iocmd->stats);
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ iocmd->status = bfa_fcport_get_stats(&bfad->bfa, &cb_qe);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ if (iocmd->status != BFA_STATUS_OK) {
+ bfa_trc(bfad, iocmd->status);
+ goto out;
+ }
+ wait_for_completion(&fcomp.comp);
+ iocmd->status = fcomp.status;
+out:
+ return 0;
+}
+
+int
+bfad_iocmd_fcport_reset_stats(struct bfad_s *bfad, void *cmd)
+{
+ struct bfa_bsg_gen_s *iocmd = (struct bfa_bsg_gen_s *)cmd;
+ struct bfad_hal_comp fcomp;
+ unsigned long flags;
+ struct bfa_cb_pending_q_s cb_qe;
+
+ init_completion(&fcomp.comp);
+ bfa_pending_q_init(&cb_qe, (bfa_cb_cbfn_t)bfad_hcb_comp, &fcomp, NULL);
+
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ iocmd->status = bfa_fcport_clear_stats(&bfad->bfa, &cb_qe);
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ if (iocmd->status != BFA_STATUS_OK) {
+ bfa_trc(bfad, iocmd->status);
+ goto out;
+ }
+ wait_for_completion(&fcomp.comp);
+ iocmd->status = fcomp.status;
+out:
+ return 0;
+}
+
static int
bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
unsigned int payload_len)
@@ -2291,6 +2340,12 @@
case IOCMD_ITNIM_GET_IOPROFILE:
rc = bfad_iocmd_itnim_get_ioprofile(bfad, iocmd);
break;
+ case IOCMD_FCPORT_GET_STATS:
+ rc = bfad_iocmd_fcport_get_stats(bfad, iocmd);
+ break;
+ case IOCMD_FCPORT_RESET_STATS:
+ rc = bfad_iocmd_fcport_reset_stats(bfad, iocmd);
+ break;
default:
rc = -EINVAL;
break;