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[SCSI] libfc: adds FCP failures stats 

Adds stats to track FCP pkt and frame alloc
failure.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Acked-by : Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Vasu Dev 2012-05-25 10:26:48 -07:00 committed by James Bottomley
parent 1bd49b4820
commit 0f02a66528
2 changed files with 14 additions and 0 deletions
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8
drivers/scsi/libfc/fc_fcp.c
View File

@ -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;

6
include/scsi/libfc.h
View File

@ -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;