From d3c7ac16be15a97950706a4f4abf2203f1de0bc0 Mon Sep 17 00:00:00 2001
From: Luca De Cicco <ldecicco@gmail.com>
Date: Sun, 11 Jun 2006 23:01:39 -0700
Subject: [PATCH] --- yaml --- r: 27572 b: refs/heads/master c:
 b7d7a9e3c900f0733bf2aabdd41e6dbc70eae94b h: refs/heads/master v: v3

---
 [refs]                        |  2 +-
 trunk/net/ipv4/tcp_westwood.c | 25 +++++++++++++++++++++----
 2 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/[refs] b/[refs]
index 1c255d35e8ce..ad48116eafe8 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f61e29018a30c738e1298e1b13be956aa17ee17b
+refs/heads/master: b7d7a9e3c900f0733bf2aabdd41e6dbc70eae94b
diff --git a/trunk/net/ipv4/tcp_westwood.c b/trunk/net/ipv4/tcp_westwood.c
index 62a96b71b0dd..12a2cd976e3a 100644
--- a/trunk/net/ipv4/tcp_westwood.c
+++ b/trunk/net/ipv4/tcp_westwood.c
@@ -1,7 +1,24 @@
 /*
- * TCP Westwood+
+ * TCP Westwood+: end-to-end bandwidth estimation for TCP
  *
- *	Angelo Dell'Aera:	TCP Westwood+ support
+ *      Angelo Dell'Aera: author of the first version of TCP Westwood+ in Linux 2.4
+ *
+ * Support at http://c3lab.poliba.it/index.php/Westwood
+ * Main references in literature:
+ *
+ * - Mascolo S, Casetti, M. Gerla et al.
+ *   "TCP Westwood: bandwidth estimation for TCP" Proc. ACM Mobicom 2001
+ *
+ * - A. Grieco, s. Mascolo
+ *   "Performance evaluation of New Reno, Vegas, Westwood+ TCP" ACM Computer
+ *     Comm. Review, 2004
+ *
+ * - A. Dell'Aera, L. Grieco, S. Mascolo.
+ *   "Linux 2.4 Implementation of Westwood+ TCP with Rate-Halving :
+ *    A Performance Evaluation Over the Internet" (ICC 2004), Paris, June 2004
+ *
+ * Westwood+ employs end-to-end bandwidth measurement to set cwnd and
+ * ssthresh after packet loss. The probing phase is as the original Reno.
  */
 
 #include <linux/config.h>
@@ -93,7 +110,7 @@ static void westwood_update_window(struct sock *sk)
 	struct westwood *w = inet_csk_ca(sk);
 	s32 delta = tcp_time_stamp - w->rtt_win_sx;
 
-	/* Initialise w->snd_una with the first acked sequence number in order
+	/* Initialize w->snd_una with the first acked sequence number in order
 	 * to fix mismatch between tp->snd_una and w->snd_una for the first
 	 * bandwidth sample
 	 */
@@ -191,7 +208,7 @@ static void tcp_westwood_event(struct sock *sk, enum tcp_ca_event event)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct westwood *w = inet_csk_ca(sk);
-	
+
 	switch(event) {
 	case CA_EVENT_FAST_ACK:
 		westwood_fast_bw(sk);