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 <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 66078da..2640c9b 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -666,7 +666,9 @@
skb_tunnel_rx(skb, reg_dev);
- netif_rx(skb);
+ if (netif_rx(skb) == NET_RX_DROP)
+ reg_dev->stats.rx_dropped++;
+
dev_put(reg_dev);
return 0;
drop:
