From 2b80230a7f8cd346c1e2ebafdd02be432bf10459 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@mandriva.com>
Date: Tue, 13 Sep 2005 19:05:08 -0300
Subject: [PATCH] [DCCP]: Handle SYNC packets in dccp_rcv_state_process

Eliciting a SYNCACK in response, we were handling SYNC packets
only in the DCCP_OPEN state, in dccp_rcv_established.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
---
 net/dccp/input.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/dccp/input.c b/net/dccp/input.c
index f01d588299c8..c74034cf7ede 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -562,6 +562,12 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 		return 0;
 	}
 
+	if (unlikely(dh->dccph_type == DCCP_PKT_SYNC)) {
+		dccp_send_sync(sk, DCCP_SKB_CB(skb)->dccpd_seq,
+			       DCCP_PKT_SYNCACK);
+		goto discard;
+	}
+
 	switch (sk->sk_state) {
 	case DCCP_CLOSED:
 		return 1;