bridge: 64bit rx/tx counters

Use u64_stats_sync infrastructure to provide 64bit rx/tx
counters even on 32bit hosts.

It is safe to use a single u64_stats_sync for rx and tx,
because BH is disabled on both, and we use per_cpu data.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index f076c9d79d5e..5fc1c5b1c360 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -27,8 +27,10 @@ static int br_pass_frame_up(struct sk_buff *skb)
         struct net_bridge *br = netdev_priv(brdev);
         struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats);
 
+        u64_stats_update_begin(&brstats->syncp);
         brstats->rx_packets++;
         brstats->rx_bytes += skb->len;
+        u64_stats_update_end(&brstats->syncp);
 
         indev = skb->dev;
         skb->dev = brdev;