Commit 82f35bec authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

net: l3mdev: use skb_dst_dev_rcu() in l3mdev_l3_out() 



Extend the RCU section a bit so that we can use the safer
skb_dst_dev_rcu() helper.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
Reviewed-by: default avatarKuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260130191906.3781856-1-edumazet@google.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 61cef645

include/net/l3mdev.h

+4 −3
Original line number Diff line number Diff line
@@ -207,18 +207,19 @@ struct sk_buff *l3mdev_ip6_rcv(struct sk_buff *skb) 
static inline

struct sk_buff *l3mdev_l3_out(struct sock *sk, struct sk_buff *skb, u16 proto)

{

	struct net_device *dev = skb_dst(skb)->dev;

	struct net_device *dev;



	rcu_read_lock();

	dev = skb_dst_dev_rcu(skb);

	if (netif_is_l3_slave(dev)) {

		struct net_device *master;



		rcu_read_lock();

		master = netdev_master_upper_dev_get_rcu(dev);

		if (master && master->l3mdev_ops->l3mdev_l3_out)

			skb = master->l3mdev_ops->l3mdev_l3_out(master, sk,

								skb, proto);

		rcu_read_unlock();

	}

	rcu_read_unlock();



	return skb;

}