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BUG/MINOR: mux-quic: implement max-reuse server parameter

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Properly implement support for max-reuse server keyword. This is done by
adding a total count of streams seen for the whole connection. This
value is used in avail_streams callback.
This commit is contained in:
Amaury Denoyelle 2025-11-19 11:39:54 +01:00
parent c8540f7437
commit e55bcf5746
2 changed files with 16 additions and 3 deletions
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1
include/haproxy/mux_quic-t.h
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@ -41,6 +41,7 @@ struct qcc {
struct connection *conn;
uint64_t nb_sc; /* number of attached stream connectors */
uint64_t nb_hreq; /* number of in-progress http requests */
uint64_t tot_sc; /* total number of stream connectors seen since conn init */
uint32_t flags; /* QC_CF_* */
enum qcc_app_st app_st; /* application layer state */
int glitches; /* total number of glitches on this connection */

18
src/mux_quic.c
View File

@ -957,6 +957,7 @@ int qcs_attach_sc(struct qcs *qcs, struct buffer *buf, char fin)
qcs->flags |= QC_SF_HREQ_RECV;
++qcc->nb_sc;
++qcc->nb_hreq;
++qcc->tot_sc;
/* TODO duplicated from mux_h2 */
sess->accept_date = date;
@ -3132,9 +3133,18 @@ static int qmux_avail_streams(struct connection *conn)
{
struct server *srv = __objt_server(conn->target);
struct qcc *qcc = conn->ctx;
int max_fctl, max_reuse = 0;
BUG_ON(srv->max_reuse >= 0); /* TODO ensure max-reuse is enforced. */
return qcc_fctl_avail_streams(qcc, 1);
max_fctl = qcc_fctl_avail_streams(qcc, 1);
if (srv->max_reuse >= 0) {
max_reuse = qcc->tot_sc <= srv->max_reuse ?
srv->max_reuse - qcc->tot_sc + 1: 0;
return MIN(max_fctl, max_reuse);
}
else {
return max_fctl;
}
}
/* Returns the number of streams currently attached into <conn> connection.
@ -3600,7 +3610,7 @@ static int qmux_init(struct connection *conn, struct proxy *prx,
_qcc_init(qcc);
conn->ctx = qcc;
qcc->nb_hreq = qcc->nb_sc = 0;
qcc->nb_hreq = qcc->nb_sc = qcc->tot_sc = 0;
qcc->flags = conn_is_back(conn) ? QC_CF_IS_BACK : 0;
qcc->app_st = QCC_APP_ST_NULL;
qcc->glitches = 0;
@ -3771,6 +3781,7 @@ static int qmux_init(struct connection *conn, struct proxy *prx,
qcs->sess = sess;
qcs->sd = sc->sedesc;
qcc->nb_sc++;
qcc->tot_sc++;
}
TRACE_LEAVE(QMUX_EV_QCC_NEW, conn);
@ -3834,6 +3845,7 @@ static int qmux_strm_attach(struct connection *conn, struct sedesc *sd, struct s
qcs->sess = sess;
qcs->sd = sd->sc->sedesc;
qcc->nb_sc++;
qcc->tot_sc++;
/* the connection is not idle anymore, let's mark this */
HA_ATOMIC_AND(&qcc->wait_event.tasklet->state, ~TASK_F_USR1);