commit e11d9d30802278af22e78d8c10f348b683670cd9
author Gerrit Renker <gerrit@erg.abdn.ac.uk> Mon Nov 13 13:12:07 2006 -0200
committer David S. Miller <davem@sunset.davemloft.net> Sat Dec 02 21:22:17 2006 -0800
tree ba084b0c5791090164363ad2aaec2c0ab241f603
parent 08a29e41bb6d6516b0f65e19381f537168d1768e

[DCCP]: Increment sequence numbers on retransmitted Response packets

Problem:

net/dccp/output.c

diff --git a/net/dccp/output.c b/net/dccp/output.c
index 992caed..08ee554 100644
--- a/net/dccp/output.c
+++ b/net/dccp/output.c
@@ -332,6 +332,8 @@
 	skb->dst = dst_clone(dst);
 
 	dreq = dccp_rsk(req);
+	if (inet_rsk(req)->acked)	/* increase ISS upon retransmission */
+		dccp_inc_seqno(&dreq->dreq_iss);
 	DCCP_SKB_CB(skb)->dccpd_type = DCCP_PKT_RESPONSE;
 	DCCP_SKB_CB(skb)->dccpd_seq  = dreq->dreq_iss;
 
@@ -354,6 +356,8 @@
 
 	dccp_csum_outgoing(skb);
 
+	/* We use `acked' to remember that a Response was already sent. */
+	inet_rsk(req)->acked = 1;
 	DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
 	return skb;
 }