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MINOR: quic: Implement cubic state trace callback

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This callback was left as not implemented. It should at least display
the algorithm state, the control congestion window the slow start threshold
and the time of the current recovery period. Should be helpful to debug.

Must be backported to 2.7.
This commit is contained in:
Frédéric Lécaille 2023-03-24 14:09:55 +01:00
parent deb978149a
commit 01314b8b53
1 changed files with 10 additions and 0 deletions
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10
src/quic_cc_cubic.c
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@ -288,6 +288,16 @@ static void quic_cc_cubic_event(struct quic_cc *cc, struct quic_cc_event *ev)
static void quic_cc_cubic_state_trace(struct buffer *buf, const struct quic_cc *cc)
{
struct quic_path *path;
struct cubic *c = quic_cc_priv(cc);
path = container_of(cc, struct quic_path, cc);
chunk_appendf(buf, " state=%s cwnd=%llu ssthresh=%d rpst=%dms",
quic_cc_state_str(cc->algo->state),
(unsigned long long)path->cwnd,
(int)c->ssthresh,
!tick_isset(c->recovery_start_time) ? -1 :
TICKS_TO_MS(tick_remain(c->recovery_start_time, now_ms)));
}
struct quic_cc_algo quic_cc_algo_cubic = {