netdev - [PATCH net-next] cxgb4: add per rx-queue counter for packet errors

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Date:   Fri, 14 Sep 2018 14:46:04 +0530
From:   Ganesh Goudar <ganeshgr@...lsio.com>
To:     netdev@...r.kernel.org, davem@...emloft.net
Cc:     nirranjan@...lsio.com, indranil@...lsio.com, dt@...lsio.com,
        Ganesh Goudar <ganeshgr@...lsio.com>,
        Casey Leedom <leedom@...lsio.com>
Subject: [PATCH net-next] cxgb4: add per rx-queue counter for packet errors

print per rx-queue packet errors in sge_qinfo

Signed-off-by: Casey Leedom <leedom@...lsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@...lsio.com>
---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4.h         | 1 +
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 1 +
 drivers/net/ethernet/chelsio/cxgb4/sge.c           | 4 ++++
 3 files changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 298701ed..b5010bd 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -692,6 +692,7 @@ struct sge_eth_stats {              /* Ethernet queue statistics */
 	unsigned long rx_cso;       /* # of Rx checksum offloads */
 	unsigned long vlan_ex;      /* # of Rx VLAN extractions */
 	unsigned long rx_drops;     /* # of packets dropped due to no mem */
+	unsigned long bad_rx_pkts;  /* # of packets with err_vec!=0 */
 };
 
 struct sge_eth_rxq {                /* SW Ethernet Rx queue */
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 0f72f9c..cab492e 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -2784,6 +2784,7 @@ do { \
 		RL("LROmerged:", stats.lro_merged);
 		RL("LROpackets:", stats.lro_pkts);
 		RL("RxDrops:", stats.rx_drops);
+		RL("RxBadPkts:", stats.bad_rx_pkts);
 		TL("TSO:", tso);
 		TL("TxCSO:", tx_cso);
 		TL("VLANins:", vlan_ins);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index 6807bc3..b901884 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -2830,6 +2830,10 @@ int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp,
 
 	csum_ok = pkt->csum_calc && !err_vec &&
 		  (q->netdev->features & NETIF_F_RXCSUM);
+
+	if (err_vec)
+		rxq->stats.bad_rx_pkts++;
+
 	if (((pkt->l2info & htonl(RXF_TCP_F)) ||
 	     tnl_hdr_len) &&
 	    (q->netdev->features & NETIF_F_GRO) && csum_ok && !pkt->ip_frag) {
-- 
2.1.0