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Add an option to use rfc6675 based pipe/inflight bytes calculation in htcp.

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Submitted by:	Kevin Bowling <kevin.bowling@kev009.com>
MFC after:	1 week
Sponsored by:	Limelight Networks
This commit is contained in:
Hiren Panchasara 2016-05-09 19:19:03 +00:00
parent d74b9e1311
commit 7c375daa61
1 changed files with 9 additions and 4 deletions
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13
sys/netinet/cc/cc_htcp.c
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@ -346,8 +346,10 @@ htcp_mod_init(void)
static void
htcp_post_recovery(struct cc_var *ccv)
{
int pipe;
struct htcp *htcp_data;
pipe = 0;
htcp_data = ccv->cc_data;
if (IN_FASTRECOVERY(CCV(ccv, t_flags))) {
@ -358,10 +360,13 @@ htcp_post_recovery(struct cc_var *ccv)
*
* XXXLAS: Find a way to do this without needing curack
*/
if (SEQ_GT(ccv->curack + CCV(ccv, snd_ssthresh),
CCV(ccv, snd_max)))
CCV(ccv, snd_cwnd) = CCV(ccv, snd_max) - ccv->curack +
CCV(ccv, t_maxseg);
if (V_tcp_do_rfc6675_pipe)
pipe = tcp_compute_pipe(ccv->ccvc.tcp);
else
pipe = CCV(ccv, snd_max) - ccv->curack;
if (pipe < CCV(ccv, snd_ssthresh))
CCV(ccv, snd_cwnd) = pipe + CCV(ccv, t_maxseg);
else
CCV(ccv, snd_cwnd) = max(1, ((htcp_data->beta *
htcp_data->prev_cwnd / CCV(ccv, t_maxseg))