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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-09-30 21:06:55 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-10-05 14:47:55 -0700 |
| commit | caf586e5f23cebb2a68cbaf288d59dbbf2d74052 (patch) | |
| tree | 5c0dfcf5a14c55501f9225835c83abddb8d1876e /include/linux/netdevice.h | |
| parent | a00eac0c459abecb539fb2a2abd3122dd7ca5d4a (diff) | |
| download | lwn-caf586e5f23cebb2a68cbaf288d59dbbf2d74052.tar.gz lwn-caf586e5f23cebb2a68cbaf288d59dbbf2d74052.zip | |
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 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 92d81edd5808..6abcef67b178 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -884,6 +884,9 @@ struct net_device { int iflink; struct net_device_stats stats; + atomic_long_t rx_dropped; /* dropped packets by core network + * Do not use this in drivers. + */ #ifdef CONFIG_WIRELESS_EXT /* List of functions to handle Wireless Extensions (instead of ioctl). |