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bridge: per-cpu packet statistics (v3)

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The shared packet statistics are a potential source of slow down
on bridged traffic. Convert to per-cpu array, but only keep those
statistics which change per-packet.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger
2010-03-02 13:32:09 +00:00
committed by David S. Miller
parent 0a9627f264
commit 14bb478983
4 changed files with 57 additions and 6 deletions
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6
net/bridge/br_input.c
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@ -23,9 +23,11 @@ const u8 br_group_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
static int br_pass_frame_up(struct sk_buff *skb)
{
struct net_device *indev, *brdev = BR_INPUT_SKB_CB(skb)->brdev;
struct net_bridge *br = netdev_priv(brdev);
struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats);
brdev->stats.rx_packets++;
brdev->stats.rx_bytes += skb->len;
brstats->rx_packets++;
brstats->rx_bytes += skb->len;
indev = skb->dev;
skb->dev = brdev;