Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260130191906.3781856-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
authored by
Eric Dumazet
and committed by
Jakub Kicinski
82f35bec
61cef645
+4
-3
+4
-3
include/net/l3mdev.h
+4
-3
include/net/l3mdev.h
···
207
207
static inline
208
208
struct sk_buff *l3mdev_l3_out(struct sock *sk, struct sk_buff *skb, u16 proto)
209
209
{
210
-
struct net_device *dev = skb_dst(skb)->dev;
210
+
struct net_device *dev;
211
211
212
+
rcu_read_lock();
213
+
dev = skb_dst_dev_rcu(skb);
212
214
if (netif_is_l3_slave(dev)) {
213
215
struct net_device *master;
214
216
215
-
rcu_read_lock();
216
217
master = netdev_master_upper_dev_get_rcu(dev);
217
218
if (master && master->l3mdev_ops->l3mdev_l3_out)
218
219
skb = master->l3mdev_ops->l3mdev_l3_out(master, sk,
219
220
skb, proto);
220
-
rcu_read_unlock();
221
221
}
222
+
rcu_read_unlock();
222
223
223
224
return skb;
224
225
}