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-rw-r--r--sys/netinet/cc/cc_cubic.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/netinet/cc/cc_cubic.c b/sys/netinet/cc/cc_cubic.c
index cec5917e01b3..a98c1c5c75be 100644
--- a/sys/netinet/cc/cc_cubic.c
+++ b/sys/netinet/cc/cc_cubic.c
@@ -313,10 +313,15 @@ cubic_cong_signal(struct cc_var *ccv, uint32_t type)
* timeout has fired more than once, as there is a reasonable
* chance the first one is a false alarm and may not indicate
* congestion.
+ * This will put Cubic firmly into the concave / TCP friendly
+ * region, for a slower ramp-up after two consecutive RTOs.
*/
if (CCV(ccv, t_rxtshift) >= 2) {
cubic_data->flags |= CUBICFLAG_CONG_EVENT;
cubic_data->t_last_cong = ticks;
+ cubic_data->max_cwnd = CCV(ccv, snd_cwnd_prev);
+ cubic_data->K = cubic_k(cubic_data->max_cwnd /
+ CCV(ccv, t_maxseg));
}
break;
}