From: David Ahern <dsahern@gmail.com>
Date: Tue, 7 May 2019 20:44:59 -0700
Subject: ipv4: Fix raw socket lookup for local traffic
Git-commit: 19e4e768064a87b073a4b4c138b55db70e0cfb9f
Patch-mainline: 5.2-rc1
References: networking-stable-19_05_14
inet_iif should be used for the raw socket lookup. inet_iif considers
rt_iif which handles the case of local traffic.
As it stands, ping to a local address with the '-I <dev>' option fails
ever since ping was changed to use SO_BINDTODEVICE instead of
cmsg + IP_PKTINFO.
IPv6 works fine.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
net/ipv4/raw.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -171,6 +171,7 @@ static int icmp_filter(const struct sock
*/
static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash)
{
+ int dif = inet_iif(skb);
struct sock *sk;
struct hlist_head *head;
int delivered = 0;
@@ -183,8 +184,7 @@ static int raw_v4_input(struct sk_buff *
net = dev_net(skb->dev);
sk = __raw_v4_lookup(net, __sk_head(head), iph->protocol,
- iph->saddr, iph->daddr,
- skb->dev->ifindex);
+ iph->saddr, iph->daddr, dif);
while (sk) {
delivered = 1;