net: dynamic ingress_queue allocation

ingress being not used very much, and net_device->ingress_queue being
quite a big object (128 or 256 bytes), use a dynamic allocation if
needed (tc qdisc add dev eth0 ingress ...)

dev_ingress_queue(dev) helper should be used only with RTNL taken.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ceed3474014a..92d81edd5808 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -986,7 +986,7 @@ struct net_device {
         rx_handler_func_t       *rx_handler;
         void                    *rx_handler_data;
 
-        struct netdev_queue     ingress_queue; /* use two cache lines */
+        struct netdev_queue __rcu *ingress_queue;
 
 /*
  * Cache lines mostly used on transmit path