Configuration check to accept source route IP options should be made on the
incoming netdevice when the skb->dev is an l3mdev master.
Signed-off-by: Stephen Suryaputra <ssuryae...@gmail.com>
---
net/ipv4/ip_input.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index ecce2dc78f17..754176222ef6 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -263,6 +263,9 @@ static inline bool ip_rcv_options(struct sk_buff *skb)
const struct iphdr *iph;
struct net_device *dev = skb->dev;
+ if (netif_is_l3_master(dev))
+ dev = __dev_get_by_index(dev_net(dev), IPCB(skb)->iif);
+
/* It looks as overkill, because not all
IP options require packet mangling.
But it is the easiest for now, especially taking
--
2.17.1
