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| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2013-12-19 12:54:58 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-21 22:00:59 -0500 |
| commit | 790e38bc26c4db72a1905c51daaa502e48081616 (patch) | |
| tree | 077ac4b5b2b76fd6b4f3c59a397ee4d73cd134d5 | |
| parent | fc45b4554045b4bb9112a848696f60ed4d94b0f4 (diff) | |
| download | linux-790e38bc26c4db72a1905c51daaa502e48081616.tar.bz2 | |
ipv6: move ip6_sk_accept_pmtu from generic pmtu update path to ipv6 one
In commit 93b36cf3425b9b ("ipv6: support IPV6_PMTU_INTERFACE on sockets")
I made a horrible mistake to add ip6_sk_accept_pmtu to the generic
sctp_icmp_frag_needed path. This results in build warnings if IPv6 is
disabled which were luckily caught by Fengguang's kbuild bot. But it
also leads to a kernel panic IPv4 frag-needed packet is received.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sctp/input.c | 3 | ||||
| -rw-r--r-- | net/sctp/ipv6.c | 3 |
2 files changed, 2 insertions, 4 deletions
diff --git a/net/sctp/input.c b/net/sctp/input.c index 042ec6c9ae24..2a192a7c5d81 100644 --- a/net/sctp/input.c +++ b/net/sctp/input.c @@ -389,9 +389,6 @@ void sctp_icmp_frag_needed(struct sock *sk, struct sctp_association *asoc, if (!t || (t->pathmtu <= pmtu)) return; - if (!ip6_sk_accept_pmtu(sk)) - return; - if (sock_owned_by_user(sk)) { asoc->pmtu_pending = 1; t->pmtu_pending = 1; diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c index 317e13eb2c56..14191ab4165f 100644 --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -172,7 +172,8 @@ static void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, switch (type) { case ICMPV6_PKT_TOOBIG: - sctp_icmp_frag_needed(sk, asoc, transport, ntohl(info)); + if (ip6_sk_accept_pmtu(sk)) + sctp_icmp_frag_needed(sk, asoc, transport, ntohl(info)); goto out_unlock; case ICMPV6_PARAMPROB: if (ICMPV6_UNK_NEXTHDR == code) { |