Adds stats to track FCP pkt and frame alloc
failure.
Signed-off-by: Vasu Dev <[email protected]>
Acked-by : Robert Love <[email protected]>
Tested-by: Ross Brattain <[email protected]>
---
drivers/scsi/libfc/fc_fcp.c | 8 ++++++++
include/scsi/libfc.h | 6 ++++++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
index 5c4c504..3c96e93 100644
--- a/drivers/scsi/libfc/fc_fcp.c
+++ b/drivers/scsi/libfc/fc_fcp.c
@@ -158,6 +158,9 @@ static struct fc_fcp_pkt *fc_fcp_pkt_alloc(struct fc_lport
*lport, gfp_t gfp)
fsp->timer.data = (unsigned long)fsp;
INIT_LIST_HEAD(&fsp->list);
spin_lock_init(&fsp->scsi_pkt_lock);
+ } else {
+ per_cpu_ptr(lport->stats, get_cpu())->FcpPktAllocFails++;
+ put_cpu();
}
return fsp;
}
@@ -264,6 +267,9 @@ static int fc_fcp_send_abort(struct fc_fcp_pkt *fsp)
if (!fsp->seq_ptr)
return -EINVAL;
+ per_cpu_ptr(fsp->lp->stats, get_cpu())->FcpPktAborts++;
+ put_cpu();
+
fsp->state |= FC_SRB_ABORT_PENDING;
return fsp->lp->tt.seq_exch_abort(fsp->seq_ptr, 0);
}
@@ -420,6 +426,8 @@ static inline struct fc_frame *fc_fcp_frame_alloc(struct
fc_lport *lport,
if (likely(fp))
return fp;
+ per_cpu_ptr(lport->stats, get_cpu())->FcpFrameAllocFails++;
+ put_cpu();
/* error case */
fc_fcp_can_queue_ramp_down(lport);
return NULL;
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index ea52ca2..f257a74 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -232,6 +232,9 @@ struct fc_rport_priv {
* @RxWords: Number of received words
* @ErrorFrames: Number of received error frames
* @DumpedFrames: Number of dumped frames
+ * @FcpPktAllocFails: Number of fcp packet allocation failures
+ * @FcpPktAborts: Number of fcp packet aborts
+ * @FcpFrameAllocFails: Number of fcp frame allocation failures
* @LinkFailureCount: Number of link failures
* @LossOfSignalCount: Number for signal losses
* @InvalidTxWordCount: Number of invalid transmitted words
@@ -252,6 +255,9 @@ struct fc_stats {
u64 RxWords;
u64 ErrorFrames;
u64 DumpedFrames;
+ u64 FcpPktAllocFails;
+ u64 FcpPktAborts;
+ u64 FcpFrameAllocFails;
u64 LinkFailureCount;
u64 LossOfSignalCount;
u64 InvalidTxWordCount;
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