netfilter: ipvs: do not create conn for ABORT packet in sctp_conn_schedule

There's no reason for ipvs to create a conn for an ABORT packet
even if sysctl_sloppy_sctp is set.

This patch is to accept it without creating a conn, just as ipvs
does for tcp's RST packet.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index 81f08198b125..57c8ee66491e 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -25,7 +25,8 @@ sctp_conn_schedule(struct netns_ipvs *ipvs, int af, struct sk_buff *skb,
                         sch = skb_header_pointer(skb, iph->len + sizeof(_sctph),
                                                  sizeof(_schunkh), &_schunkh);
                         if (sch) {
-                                if (!(sysctl_sloppy_sctp(ipvs) ||
+                                if (sch->type == SCTP_CID_ABORT ||
+                                    !(sysctl_sloppy_sctp(ipvs) ||
                                       sch->type == SCTP_CID_INIT))
                                         return 1;
                                 ports = &sh->source;