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commit f4499bb5e27a96e1558f99edb081de473c13c7a6 Author: Mike Perry mikeperry-git@torproject.org AuthorDate: Wed Dec 21 01:18:28 2022 +0000
Clean up next_cc_event handling. --- src/core/or/congestion_control_st.h | 2 +- src/core/or/congestion_control_vegas.c | 14 +++++--------- 2 files changed, 6 insertions(+), 10 deletions(-)
diff --git a/src/core/or/congestion_control_st.h b/src/core/or/congestion_control_st.h index 3fe693d989..08bf70f73b 100644 --- a/src/core/or/congestion_control_st.h +++ b/src/core/or/congestion_control_st.h @@ -231,7 +231,7 @@ static inline uint64_t CWND_UPDATE_RATE(const struct congestion_control_t *cc) * of acks */
if (cc->in_slow_start) { - return ((cc->cwnd + cc->sendme_inc/2)/cc->sendme_inc); + return 1; } else { return ((cc->cwnd + cc->cwnd_inc_rate*cc->sendme_inc/2) / (cc->cwnd_inc_rate*cc->sendme_inc)); diff --git a/src/core/or/congestion_control_vegas.c b/src/core/or/congestion_control_vegas.c index 044689421e..ae945e7e00 100644 --- a/src/core/or/congestion_control_vegas.c +++ b/src/core/or/congestion_control_vegas.c @@ -301,7 +301,6 @@ congestion_control_vegas_exit_slow_start(const circuit_t *circ, { congestion_control_vegas_log(circ, cc); cc->in_slow_start = 0; - cc->next_cc_event = CWND_UPDATE_RATE(cc); congestion_control_vegas_log(circ, cc);
/* Update metricsport metrics */ @@ -445,11 +444,11 @@ congestion_control_vegas_process_sendme(congestion_control_t *cc, if (cc->cwnd_full) { /* Get the "Limited Slow Start" increment */ uint64_t inc = rfc3742_ss_inc(cc); + cc->cwnd += inc;
// Check if inc is less than what we would do in steady-state // avoidance if (inc*SENDME_PER_CWND(cc) <= CWND_INC(cc)) { - cc->cwnd += inc; congestion_control_vegas_exit_slow_start(circ, cc);
cc_stats_vegas_below_ss_inc_floor++; @@ -458,9 +457,6 @@ congestion_control_vegas_process_sendme(congestion_control_t *cc, cc_stats_vegas_ss_csig_blocked_ma = stats_update_running_avg(cc_stats_vegas_ss_csig_blocked_ma, 0); - } else { - cc->cwnd += inc; - cc->next_cc_event = 1; // Technically irellevant, but for consistency } } } else { @@ -581,9 +577,6 @@ congestion_control_vegas_process_sendme(congestion_control_t *cc, /* cwnd can never fall below 1 increment */ cc->cwnd = MAX(cc->cwnd, cc->cwnd_min);
- /* Schedule next update */ - cc->next_cc_event = CWND_UPDATE_RATE(cc); - congestion_control_vegas_log(circ, cc);
/* Update metrics */ @@ -602,10 +595,13 @@ congestion_control_vegas_process_sendme(congestion_control_t *cc, } }
- /* Once per cwnd, reset the cwnd full state */ + /* Reset event counters */ if (cc->next_cwnd_event == 0) { cc->next_cwnd_event = SENDME_PER_CWND(cc); } + if (cc->next_cc_event == 0) { + cc->next_cc_event = CWND_UPDATE_RATE(cc); + }
/* Decide if enough time has passed to reset the cwnd utilization */ if (cwnd_full_reset(cc))