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/*
* Fake congestion control algorithm which does nothing except initializing
* the congestion control window to a fixed value.
*
*/
#include <haproxy/api-t.h>
#include <haproxy/quic_conn-t.h>
#include <haproxy/quic_trace.h>
#include <haproxy/trace.h>
static int quic_cc_nocc_init(struct quic_cc *cc)
{
struct quic_cc_path *path;
path = container_of(cc, struct quic_cc_path, cc);
path->cwnd = path->max_cwnd;
return 1;
}
static void quic_cc_nocc_slow_start(struct quic_cc *cc)
{
}
/* Slow start callback. */
static void quic_cc_nocc_ss_cb(struct quic_cc *cc, struct quic_cc_event *ev)
{
TRACE_ENTER(QUIC_EV_CONN_CC, cc->qc);
TRACE_PROTO("CC nocc", QUIC_EV_CONN_CC, cc->qc, ev, cc);
TRACE_LEAVE(QUIC_EV_CONN_CC, cc->qc);
}
/* Congestion avoidance callback. */
static void quic_cc_nocc_ca_cb(struct quic_cc *cc, struct quic_cc_event *ev)
{
TRACE_ENTER(QUIC_EV_CONN_CC, cc->qc);
TRACE_PROTO("CC nocc", QUIC_EV_CONN_CC, cc->qc, ev, cc);
TRACE_LEAVE(QUIC_EV_CONN_CC, cc->qc);
}
/* Recovery period callback. */
static void quic_cc_nocc_rp_cb(struct quic_cc *cc, struct quic_cc_event *ev)
{
TRACE_ENTER(QUIC_EV_CONN_CC, cc->qc);
TRACE_PROTO("CC nocc", QUIC_EV_CONN_CC, cc->qc, ev, cc);
TRACE_LEAVE(QUIC_EV_CONN_CC, cc->qc);
}
static void quic_cc_nocc_state_trace(struct buffer *buf, const struct quic_cc *cc)
{
struct quic_cc_path *path;
path = container_of(cc, struct quic_cc_path, cc);
chunk_appendf(buf, " cwnd=%llu", (unsigned long long)path->cwnd);
}
static void (*quic_cc_nocc_state_cbs[])(struct quic_cc *cc,
struct quic_cc_event *ev) = {
[QUIC_CC_ST_SS] = quic_cc_nocc_ss_cb,
[QUIC_CC_ST_CA] = quic_cc_nocc_ca_cb,
[QUIC_CC_ST_RP] = quic_cc_nocc_rp_cb,
};
static void quic_cc_nocc_event(struct quic_cc *cc, struct quic_cc_event *ev)
{
return quic_cc_nocc_state_cbs[QUIC_CC_ST_SS](cc, ev);
}
struct quic_cc_algo quic_cc_algo_nocc = {
.type = QUIC_CC_ALGO_TP_NOCC,
.init = quic_cc_nocc_init,
.event = quic_cc_nocc_event,
.slow_start = quic_cc_nocc_slow_start,
.state_trace = quic_cc_nocc_state_trace,
};
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