fixup! congure_quic: initial import of QUIC congestion control

RIOT-OS · Oct 17, 2022 · 2b7aab2 · 2b7aab2
1 parent acfb00f
commit 2b7aab2
Showing 1 changed file with 15 additions and 11 deletions.
diff --git a/sys/congure/quic/congure_quic.c b/sys/congure/quic/congure_quic.c
@@ -102,6 +102,20 @@ static void _update_rtts(congure_quic_snd_t *c, ztimer_now_t msg_send_time,
     }
 }
 
+static void _reset_cwnd_in_pc(congure_quic_snd_t *c)
+{
+    c->super.cwnd = c->consts->min_wnd;
+    if (c->ssthresh < c->consts->min_wnd) {
+        /* See https://github.com/quicwg/base-drafts/issues/4826#issuecomment-776305871
+         * XXX: this differs from the pseudo-code in
+         * Appendix B.8, where when `ssthresh` is lower than
+         * `cwnd` (e.g. because )
+         */
+        c->ssthresh = c->consts->min_wnd;
+    }
+    c->recovery_start = 0;
+}
+
 static void _reset_cwnd(congure_quic_snd_t *c, congure_snd_msg_t *msgs)
 {
     /* Reset the congestion window if the loss of these packets indicates
@@ -140,17 +154,7 @@ static void _reset_cwnd(congure_quic_snd_t *c, congure_snd_msg_t *msgs)
                     }
                     if ((latest - earliest) > pc_duration) {
                         /* in persistent congestion */
-                        c->super.cwnd = c->consts->min_wnd;
-                        if (c->ssthresh < c->consts->min_wnd) {
-                            /* See
-                             * https://github.com/quicwg/base-drafts/issues/4826#issuecomment-776305871
-                             * XXX: this differs from the pseudo-code in
-                             * Appendix B.8, where when `ssthresh` is lower than
-                             * `cwnd` (e.g. because )
-                             */
-                            c->ssthresh = c->consts->min_wnd;
-                        }
-                        c->recovery_start = 0;
+                        _reset_cwnd_in_pc(c);
                     }
                 }
             } while ((&ptr->super) != msgs->super.next);