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Commit 0f02a665 authored by Vasu Dev's avatar Vasu Dev Committed by James Bottomley
Browse files

[SCSI] libfc: adds FCP failures stats 



Adds stats to track FCP pkt and frame alloc
failure.

Signed-off-by: default avatarVasu Dev <vasu.dev@intel.com>
Acked-by : Robert Love <robert.w.love@intel.com>
Tested-by: default avatarRoss Brattain <ross.b.brattain@intel.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 1bd49b48

drivers/scsi/libfc/fc_fcp.c

+8 −0
Original line number Diff line number Diff line
@@ -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;

include/scsi/libfc.h

+6 −0
Original line number Diff line number Diff line
@@ -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;