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authorHannes Frederic Sowa <hannes@stressinduktion.org>2013-12-15 03:41:14 +0100
committerDavid S. Miller <davem@davemloft.net>2013-12-18 17:37:05 -0500
commit93b36cf3425b9bd9c56df7680fb237686b9c82ae (patch)
tree1562e2899394e011e22ce21523dd6ce1defc3ee8 /net/ipv6/tcp_ipv6.c
parentcd174e67a6b312fce9bab502ba2b0583e11f537f (diff)
ipv6: support IPV6_PMTU_INTERFACE on sockets
IPV6_PMTU_INTERFACE is the same as IPV6_PMTU_PROBE for ipv6. Add it nontheless for symmetry with IPv4 sockets. Also drop incoming MTU information if this mode is enabled. The additional bit in ipv6_pinfo just eats in the padding behind the bitfield. There are no changes to the layout of the struct at all. Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
-rw-r--r--net/ipv6/tcp_ipv6.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index da046a5d7ffb..d955487f2c54 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -397,6 +397,9 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
if (sk->sk_state == TCP_LISTEN)
goto out;
+ if (!ip6_sk_accept_pmtu(sk))
+ goto out;
+
tp->mtu_info = ntohl(info);
if (!sock_owned_by_user(sk))
tcp_v6_mtu_reduced(sk);