From 1d2f7b2d956e242179aaf4a08f3545f99c81f9a3 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 4 May 2016 21:26:08 -0700 Subject: net: ipv6: tcp reset, icmp need to consider L3 domain Responses for packets to unused ports are getting lost with L3 domains. IPv4 has ip_send_unicast_reply for sending TCP responses which accounts for L3 domains; update the IPv6 counterpart tcp_v6_send_response. For icmp the L3 master check needs to be moved up in icmp6_send to properly respond to UDP packets to a port with no listener. Fixes: ca254490c8df ("net: Add VRF support to IPv6 stack") Signed-off-by: David Ahern Signed-off-by: David S. Miller --- net/ipv6/icmp.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'net/ipv6/icmp.c') diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 0a37ddc7af51..0013cacf7164 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -445,6 +445,8 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) if (__ipv6_addr_needs_scope_id(addr_type)) iif = skb->dev->ifindex; + else + iif = l3mdev_master_ifindex(skb->dev); /* * Must not send error if the source does not uniquely @@ -499,9 +501,6 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) else if (!fl6.flowi6_oif) fl6.flowi6_oif = np->ucast_oif; - if (!fl6.flowi6_oif) - fl6.flowi6_oif = l3mdev_master_ifindex(skb->dev); - dst = icmpv6_route_lookup(net, skb, sk, &fl6); if (IS_ERR(dst)) goto out; -- cgit