veth: reduce stat overhead

veth stats are a bit bloated. There is no need to account transmit
and receive stats, since they are absolutely symmetric.

Also use a per device atomic64_t for the dropped counter, as it
should never be used in fast path.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 0e1b92a0c1ec..6835b5837f93 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1284,6 +1284,7 @@ struct net_device {
                 struct pcpu_lstats __percpu     *lstats; /* loopback stats */
                 struct pcpu_tstats __percpu     *tstats; /* tunnel stats */
                 struct pcpu_dstats __percpu     *dstats; /* dummy stats */
+                struct pcpu_vstats __percpu     *vstats; /* veth stats */
         };
         /* GARP */
         struct garp_port __rcu  *garp_port;