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| author | Luca De Cicco <ldecicco@gmail.com> | 2006-06-12 08:01:39 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-06-18 06:30:34 +0200 |
| commit | b7d7a9e3c900f0733bf2aabdd41e6dbc70eae94b (patch) | |
| tree | fa8d5b51f68ea0decac901026f7f6d6648d75614 | |
| parent | [TCP] Westwood: fix first sample (diff) | |
| download | linux-b7d7a9e3c900f0733bf2aabdd41e6dbc70eae94b.tar.xz linux-b7d7a9e3c900f0733bf2aabdd41e6dbc70eae94b.zip | |
[TCP] Westwood: comment fixes
Cleanup some comments and add more references
Signed-off-by: Luca De Cicco <ldecicco@gmail.com>
Signed-off-by: Stephen Hemminger <shemminger@dxpl.pdx.osdl.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/tcp_westwood.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/net/ipv4/tcp_westwood.c b/net/ipv4/tcp_westwood.c index 62a96b71b0dd..12a2cd976e3a 100644 --- a/net/ipv4/tcp_westwood.c +++ b/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); |