be2net: Support vxlan offload stats in the driver

This patch adds vxlan offload specific counters to ethtool stats. We
provide tx/rx queue counters to show the number of vxlan offload pkts
sent/received.

Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be.h

@@ -230,6 +230,7 @@ struct be_mcc_obj {
 struct be_tx_stats {
 	u64 tx_bytes;
 	u64 tx_pkts;
+	u64 tx_vxlan_offload_pkts;
 	u64 tx_reqs;
 	u64 tx_compl;
 	ulong tx_jiffies;
@@ -277,6 +278,7 @@ struct be_rx_page_info {
 struct be_rx_stats {
 	u64 rx_bytes;
 	u64 rx_pkts;
+	u64 rx_vxlan_offload_pkts;
 	u32 rx_drops_no_skbs;	/* skb allocation errors */
 	u32 rx_drops_no_frags;	/* HW has no fetched frags */
 	u32 rx_post_fail;	/* page post alloc failures */

drivers/net/ethernet/emulex/benet/be_ethtool.c

@@ -138,6 +138,7 @@ static const struct be_ethtool_stat et_stats[] = {
 static const struct be_ethtool_stat et_rx_stats[] = {
 	{DRVSTAT_RX_INFO(rx_bytes)},/* If moving this member see above note */
 	{DRVSTAT_RX_INFO(rx_pkts)}, /* If moving this member see above note */
+	{DRVSTAT_RX_INFO(rx_vxlan_offload_pkts)},
 	{DRVSTAT_RX_INFO(rx_compl)},
 	{DRVSTAT_RX_INFO(rx_compl_err)},
 	{DRVSTAT_RX_INFO(rx_mcast_pkts)},
@@ -190,6 +191,7 @@ static const struct be_ethtool_stat et_tx_stats[] = {
 	{DRVSTAT_TX_INFO(tx_internal_parity_err)},
 	{DRVSTAT_TX_INFO(tx_bytes)},
 	{DRVSTAT_TX_INFO(tx_pkts)},
+	{DRVSTAT_TX_INFO(tx_vxlan_offload_pkts)},
 	/* Number of skbs queued for trasmission by the driver */
 	{DRVSTAT_TX_INFO(tx_reqs)},
 	/* Number of times the TX queue was stopped due to lack

drivers/net/ethernet/emulex/benet/be_main.c

@@ -677,11 +677,14 @@ void be_link_status_update(struct be_adapter *adapter, u8 link_status)
 static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)
 {
 	struct be_tx_stats *stats = tx_stats(txo);
+	u64 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
 
 	u64_stats_update_begin(&stats->sync);
 	stats->tx_reqs++;
 	stats->tx_bytes += skb->len;
-	stats->tx_pkts += (skb_shinfo(skb)->gso_segs ? : 1);
+	stats->tx_pkts += tx_pkts;
+	if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)
+		stats->tx_vxlan_offload_pkts += tx_pkts;
 	u64_stats_update_end(&stats->sync);
 }
 
@@ -1957,6 +1960,8 @@ static void be_rx_stats_update(struct be_rx_obj *rxo,
 	stats->rx_compl++;
 	stats->rx_bytes += rxcp->pkt_size;
 	stats->rx_pkts++;
+	if (rxcp->tunneled)
+		stats->rx_vxlan_offload_pkts++;
 	if (rxcp->pkt_type == BE_MULTICAST_PACKET)
 		stats->rx_mcast_pkts++;
 	if (rxcp->err)