From: Mike Perry <mikeperry-git@torproject.org>
Date: Sat, 22 Jan 2022 19:22:40 +0000 (+0000)
Subject: Increment by at least 2 sendme_incs in slow start
X-Git-Tag: tor-0.4.7.4-alpha~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1960bf09f3e3fb234678247f1f78d806bb9066ed;p=thirdparty%2Ftor.git

Increment by at least 2 sendme_incs in slow start
---

diff --git a/src/core/or/congestion_control_vegas.c b/src/core/or/congestion_control_vegas.c
index d823a5068e..0ebff17faf 100644
--- a/src/core/or/congestion_control_vegas.c
+++ b/src/core/or/congestion_control_vegas.c
@@ -206,8 +206,8 @@ congestion_control_vegas_process_sendme(congestion_control_t *cc,
     if (cc->in_slow_start) {
       if (queue_use < cc->vegas_params.gamma && !cc->blocked_chan) {
         /* Grow to BDP immediately, then exponential growth until
-         * congestion signal */
-        cc->cwnd = MAX(cc->cwnd + CWND_INC_SS(cc),
+         * congestion signal. Increment by at least 2 sendme's worth. */
+        cc->cwnd = MAX(cc->cwnd + MAX(CWND_INC_SS(cc), 2*cc->sendme_inc),
                        vegas_bdp_mix(cc));
       } else {
         /* Congestion signal: Fall back to Vegas equilibrium (BDP) */