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authorEric Dumazet <eric.dumazet@gmail.com>2010-10-01 01:06:55 +0400
committerDavid S. Miller <davem@davemloft.net>2010-10-06 01:47:55 +0400
commitcaf586e5f23cebb2a68cbaf288d59dbbf2d74052 (patch)
tree5c0dfcf5a14c55501f9225835c83abddb8d1876e /net/8021q/vlan_core.c
parenta00eac0c459abecb539fb2a2abd3122dd7ca5d4a (diff)
downloadlinux-caf586e5f23cebb2a68cbaf288d59dbbf2d74052.tar.xz
net: add a core netdev->rx_dropped counter
In various situations, a device provides a packet to our stack and we drop it before it enters protocol stack : - softnet backlog full (accounted in /proc/net/softnet_stat) - bad vlan tag (not accounted) - unknown/unregistered protocol (not accounted) We can handle a per-device counter of such dropped frames at core level, and automatically adds it to the device provided stats (rx_dropped), so that standard tools can be used (ifconfig, ip link, cat /proc/net/dev) This is a generalization of commit 8990f468a (net: rx_dropped accounting), thus reverting it. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan_core.c')
-rw-r--r--net/8021q/vlan_core.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index b6d55a9304f2..dee727ce0291 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -33,6 +33,7 @@ int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
return polling ? netif_receive_skb(skb) : netif_rx(skb);
drop:
+ atomic_long_inc(&skb->dev->rx_dropped);
dev_kfree_skb_any(skb);
return NET_RX_DROP;
}
@@ -123,6 +124,7 @@ vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp,
return dev_gro_receive(napi, skb);
drop:
+ atomic_long_inc(&skb->dev->rx_dropped);
return GRO_DROP;
}