From 8990f468ae9010ab0af4be8f51bf7ab833a67202 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 20 Sep 2010 00:12:11 +0000 Subject: net: rx_dropped accounting Under load, netif_rx() can drop incoming packets but administrators dont have a chance to spot which device needs some tuning (RPS activation for example) This patch adds rx_dropped accounting in vlans and tunnels. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/8021q/vlan_dev.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'net/8021q/vlan_dev.c') diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index 3bccdd12a26..94a1feddeb4 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -225,7 +225,10 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, } } - netif_rx(skb); + if (unlikely(netif_rx(skb) == NET_RX_DROP)) { + if (rx_stats) + rx_stats->rx_dropped++; + } rcu_read_unlock(); return NET_RX_SUCCESS; @@ -843,13 +846,15 @@ static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, st accum.rx_packets += rxpackets; accum.rx_bytes += rxbytes; accum.rx_multicast += rxmulticast; - /* rx_errors is an ulong, not protected by syncp */ + /* rx_errors, rx_dropped are ulong, not protected by syncp */ accum.rx_errors += p->rx_errors; + accum.rx_dropped += p->rx_dropped; } stats->rx_packets = accum.rx_packets; stats->rx_bytes = accum.rx_bytes; stats->rx_errors = accum.rx_errors; stats->multicast = accum.rx_multicast; + stats->rx_dropped = accum.rx_dropped; } return stats; } -- cgit v1.2.3-18-g5258