[PATCH net 2/2] netfilter: ipvs: do not create conn for ABORT packet in

To: netfilter-devel@xxxxxxxxxxxxxxx
Subject: [PATCH net 2/2] netfilter: ipvs: do not create conn for ABORT packet in sctp_conn_schedule
Cc: pablo@xxxxxxxxxxxxx, Alex Gartrell <agartrell@xxxxxx>, lvs-devel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, horms@xxxxxxxxxxxx, ja@xxxxxx, wensong@xxxxxxxxxxxx
From: Xin Long <>
Date: Sun, 20 Aug 2017 13:38:08 +0800
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 <>
 net/netfilter/ipvs/ip_vs_proto_sctp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c 
index e9b18ac..d86773a 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;

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