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authorPau Espin Pedrol <pespin.shar@gmail.com>2017-01-06 20:33:28 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2017-01-09 18:01:03 +0100
commitbf99b4ded5f8a4767dbb9d180626f06c51f9881f (patch)
tree80c6db27569306f6a01e7341f44fbf338a8775e2 /net/ipv6/tcp_ipv6.c
parentcc31d43b4154ad5a7d8aa5543255a93b7e89edc2 (diff)
downloadblackbird-obmc-linux-bf99b4ded5f8a4767dbb9d180626f06c51f9881f.tar.gz
blackbird-obmc-linux-bf99b4ded5f8a4767dbb9d180626f06c51f9881f.zip
tcp: fix mark propagation with fwmark_reflect enabled
Otherwise, RST packets generated by the TCP stack for non-existing sockets always have mark 0. The mark from the original packet is assigned to the netns_ipv4/6 socket used to send the response so that it can get copied into the response skb when the socket sends it. Fixes: e110861f8609 ("net: add a sysctl to reflect the fwmark on replies") Cc: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Pau Espin Pedrol <pau.espin@tessares.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')
-rw-r--r--net/ipv6/tcp_ipv6.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 73bc8fc68acd..2b20622a5824 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -840,6 +840,7 @@ static void tcp_v6_send_response(const struct sock *sk, struct sk_buff *skb, u32
dst = ip6_dst_lookup_flow(ctl_sk, &fl6, NULL);
if (!IS_ERR(dst)) {
skb_dst_set(buff, dst);
+ ctl_sk->sk_mark = fl6.flowi6_mark;
ip6_xmit(ctl_sk, buff, &fl6, NULL, tclass);
TCP_INC_STATS(net, TCP_MIB_OUTSEGS);
if (rst)
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