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synced 2025-09-20 21:31:28 +02:00
2eb1b0cd96
There was some possible confusion between fields related to congestion window size min and max limit which cannot be exceeded, and the maximum value previously reached by the window. Fix this by adopting a new naming scheme. Enforced limit are now renamed <limit_max>/<limit_min>, while the previously reached max value is renamed <cwnd_last_max>. This should be backported up to 3.1.
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/*
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* Fake congestion control algorithm which does nothing except initializing
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* the congestion control window to a fixed value.
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*
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*/
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#include <haproxy/api-t.h>
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#include <haproxy/quic_cc.h>
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#include <haproxy/quic_conn-t.h>
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#include <haproxy/quic_trace.h>
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#include <haproxy/trace.h>
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static int quic_cc_nocc_init(struct quic_cc *cc)
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{
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struct quic_cc_path *path;
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path = container_of(cc, struct quic_cc_path, cc);
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path->cwnd = path->limit_max;
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return 1;
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}
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static void quic_cc_nocc_slow_start(struct quic_cc *cc)
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{
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}
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/* Slow start callback. */
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static void quic_cc_nocc_ss_cb(struct quic_cc *cc, struct quic_cc_event *ev)
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{
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TRACE_ENTER(QUIC_EV_CONN_CC, cc->qc);
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TRACE_PROTO("CC nocc", QUIC_EV_CONN_CC, cc->qc, ev, cc);
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TRACE_LEAVE(QUIC_EV_CONN_CC, cc->qc);
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}
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/* Congestion avoidance callback. */
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static void quic_cc_nocc_ca_cb(struct quic_cc *cc, struct quic_cc_event *ev)
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{
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TRACE_ENTER(QUIC_EV_CONN_CC, cc->qc);
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TRACE_PROTO("CC nocc", QUIC_EV_CONN_CC, cc->qc, ev, cc);
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TRACE_LEAVE(QUIC_EV_CONN_CC, cc->qc);
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}
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/* Recovery period callback. */
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static void quic_cc_nocc_rp_cb(struct quic_cc *cc, struct quic_cc_event *ev)
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{
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TRACE_ENTER(QUIC_EV_CONN_CC, cc->qc);
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TRACE_PROTO("CC nocc", QUIC_EV_CONN_CC, cc->qc, ev, cc);
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TRACE_LEAVE(QUIC_EV_CONN_CC, cc->qc);
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}
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static void quic_cc_nocc_state_trace(struct buffer *buf, const struct quic_cc *cc)
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{
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struct quic_cc_path *path;
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path = container_of(cc, struct quic_cc_path, cc);
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chunk_appendf(buf, " cwnd=%llu", (unsigned long long)path->cwnd);
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}
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static void (*quic_cc_nocc_state_cbs[])(struct quic_cc *cc,
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struct quic_cc_event *ev) = {
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[QUIC_CC_ST_SS] = quic_cc_nocc_ss_cb,
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[QUIC_CC_ST_CA] = quic_cc_nocc_ca_cb,
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[QUIC_CC_ST_RP] = quic_cc_nocc_rp_cb,
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};
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static void quic_cc_nocc_event(struct quic_cc *cc, struct quic_cc_event *ev)
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{
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return quic_cc_nocc_state_cbs[QUIC_CC_ST_SS](cc, ev);
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}
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struct quic_cc_algo quic_cc_algo_nocc = {
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.type = QUIC_CC_ALGO_TP_NOCC,
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.flags = QUIC_CC_ALGO_FL_OPT_PACING,
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.init = quic_cc_nocc_init,
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.event = quic_cc_nocc_event,
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.pacing_inter = quic_cc_default_pacing_inter,
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.pacing_burst = NULL,
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.slow_start = quic_cc_nocc_slow_start,
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.state_trace = quic_cc_nocc_state_trace,
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};
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