be2net: account for skb allocation failures

If we cannot allocate new skbs in RX completion handler, we should
increase netdevice rx_dropped counter, not spam console messages.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/benet/be.h b/drivers/net/benet/be.h
index 9aa1534..72ec00f 100644 (file)
--- a/drivers/net/benet/be.h
+++ b/drivers/net/benet/be.h
@@ -199,6 +199,7 @@ struct be_rx_stats {
        u32 rx_polls;   /* number of times NAPI called poll function */
        u32 rx_events;  /* number of ucast rx completion events  */
        u32 rx_compl;   /* number of rx completion entries processed */
+       ulong rx_dropped; /* number of skb allocation errors */
        ulong rx_jiffies;
        u64 rx_bytes;
        u64 rx_bytes_prev;

diff --git a/drivers/net/benet/be_ethtool.c b/drivers/net/benet/be_ethtool.c
index 30c1386..7fd8130 100644 (file)
--- a/drivers/net/benet/be_ethtool.c
+++ b/drivers/net/benet/be_ethtool.c
@@ -102,6 +102,7 @@ static const struct be_ethtool_stat et_rx_stats[] = {
        {DRVSTAT_RX_INFO(rx_compl)},
        {DRVSTAT_RX_INFO(rx_mcast_pkts)},
        {DRVSTAT_RX_INFO(rx_post_fail)},
+       {DRVSTAT_RX_INFO(rx_dropped)},
        {ERXSTAT_INFO(rx_drops_no_fragments)}
 };
 #define ETHTOOL_RXSTATS_NUM (ARRAY_SIZE(et_rx_stats))

diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 4ebd700..f7d6d9d 100644 (file)
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -431,6 +431,7 @@ void netdev_stats_update(struct be_adapter *adapter)
                pkts += rx_stats(rxo)->rx_pkts;
                bytes += rx_stats(rxo)->rx_bytes;
                mcast += rx_stats(rxo)->rx_mcast_pkts;
+               drops += rx_stats(rxo)->rx_dropped;
                /*  no space in linux buffers: best possible approximation */
                if (adapter->generation == BE_GEN3) {
                        if (!(lancer_chip(adapter))) {
@@ -1181,8 +1182,7 @@ static void be_rx_compl_process(struct be_adapter *adapter,
 
        skb = netdev_alloc_skb_ip_align(netdev, BE_HDR_LEN);
        if (unlikely(!skb)) {
-               if (net_ratelimit())
-                       dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
+               rxo->stats.rx_dropped++;
                be_rx_compl_discard(adapter, rxo, rxcp);
                return;
        }