---

yaml
---
r: 203182
b: refs/heads/master
c: 59b8080
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a7d13fbf85375698879d16f118af77fbfcc2de44
+refs/heads/master: 59b80802a8a18b64d38b51aa168253684b2649d5

trunk/net/dccp/input.c

@@ -430,7 +430,7 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk,
 		if (dccp_parse_options(sk, NULL, skb))
 			return 1;
 
-		/* Obtain usec RTT sample from SYN exchange (used by CCID 3) */
+		/* Obtain usec RTT sample from SYN exchange (used by TFRC). */
 		if (likely(dp->dccps_options_received.dccpor_timestamp_echo))
 			dp->dccps_syn_rtt = dccp_sample_rtt(sk, 10 * (tstamp -
 			    dp->dccps_options_received.dccpor_timestamp_echo));
@@ -535,6 +535,8 @@ static int dccp_rcv_respond_partopen_state_process(struct sock *sk,
 						   const struct dccp_hdr *dh,
 						   const unsigned len)
 {
+	struct dccp_sock *dp = dccp_sk(sk);
+	u32 sample = dp->dccps_options_received.dccpor_timestamp_echo;
 	int queued = 0;
 
 	switch (dh->dccph_type) {
@@ -559,7 +561,14 @@ static int dccp_rcv_respond_partopen_state_process(struct sock *sk,
 		if (sk->sk_state == DCCP_PARTOPEN)
 			inet_csk_clear_xmit_timer(sk, ICSK_TIME_DACK);
 
-		dccp_sk(sk)->dccps_osr = DCCP_SKB_CB(skb)->dccpd_seq;
+		/* Obtain usec RTT sample from SYN exchange (used by TFRC). */
+		if (likely(sample)) {
+			long delta = dccp_timestamp() - sample;
+
+			dp->dccps_syn_rtt = dccp_sample_rtt(sk, 10 * delta);
+		}
+
+		dp->dccps_osr = DCCP_SKB_CB(skb)->dccpd_seq;
 		dccp_set_state(sk, DCCP_OPEN);
 
 		if (dh->dccph_type == DCCP_PKT_DATAACK ||

trunk/net/dccp/options.c

@@ -529,7 +529,7 @@ int dccp_insert_options(struct sock *sk, struct sk_buff *skb)
 		if (DCCP_SKB_CB(skb)->dccpd_type == DCCP_PKT_REQUEST) {
 			/*
 			 * Obtain RTT sample from Request/Response exchange.
-			 * This is currently used in CCID 3 initialisation.
+			 * This is currently used for TFRC initialisation.
 			 */
 			if (dccp_insert_option_timestamp(skb))
 				return -1;
@@ -562,6 +562,10 @@ int dccp_insert_options_rsk(struct dccp_request_sock *dreq, struct sk_buff *skb)
 	if (dccp_feat_insert_opts(NULL, dreq, skb))
 		return -1;
 
+	/* Obtain RTT sample from Response/Ack exchange (used by TFRC). */
+	if (dccp_insert_option_timestamp(skb))
+		return -1;
+
 	if (dreq->dreq_timestamp_echo != 0 &&
 	    dccp_insert_option_timestamp_echo(NULL, dreq, skb))
 		return -1;