[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>
diff --git a/net/dccp/input.c b/net/dccp/input.c
index f01d588..c74034c 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -562,6 +562,12 @@
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;