MINOR: mux-quic: add option to disable pacing

Author: a-denoyelle

include/haproxy/global-t.h

@@ -87,6 +87,7 @@
 #define GTUNE_LISTENER_MQ_ANY    (GTUNE_LISTENER_MQ_FAIR | GTUNE_LISTENER_MQ_OPT)
 #define GTUNE_QUIC_CC_HYSTART    (1<<29)
 #define GTUNE_QUIC_NO_UDP_GSO    (1<<30)
+#define GTUNE_QUIC_NO_PACING     (1<<31)
 
 #define NO_ZERO_COPY_FWD             0x0001 /* Globally disable zero-copy FF */
 #define NO_ZERO_COPY_FWD_PT          0x0002 /* disable zero-copy FF for PT (recv & send are disabled automatically) */

src/cfgparse-quic.c

@@ -327,7 +327,10 @@ static int cfg_parse_quic_tune_setting0(char **args, int section_type,
 		return -1;
 
 	suffix = args[0] + prefix_len;
-	if (strcmp(suffix, "disable-udp-gso") == 0) {
+	if (strcmp(suffix, "frontend.tx.disable-pacing") == 0) {
+		global.tune.options |= GTUNE_QUIC_NO_PACING;
+	}
+	else if (strcmp(suffix, "disable-udp-gso") == 0) {
 		global.tune.options |= GTUNE_QUIC_NO_UDP_GSO;
 	}
 	else {
@@ -386,6 +389,7 @@ static struct cfg_kw_list cfg_kws = {ILH, {
 	{ CFG_GLOBAL, "tune.quic.frontend.max-idle-timeout", cfg_parse_quic_time },
 	{ CFG_GLOBAL, "tune.quic.frontend.max-tx-burst", cfg_parse_quic_tune_setting },
 	{ CFG_GLOBAL, "tune.quic.frontend.max-window-size", cfg_parse_quic_tune_setting },
+	{ CFG_GLOBAL, "tune.quic.frontend.tx.disable-pacing", cfg_parse_quic_tune_setting0 },
 	{ CFG_GLOBAL, "tune.quic.max-frame-loss", cfg_parse_quic_tune_setting },
 	{ CFG_GLOBAL, "tune.quic.reorder-ratio", cfg_parse_quic_tune_setting },
 	{ CFG_GLOBAL, "tune.quic.retry-threshold", cfg_parse_quic_tune_setting },

src/mux_quic.c

@@ -2097,7 +2097,7 @@ static int qcc_send_frames(struct qcc *qcc, struct list *frms, int stream)
 		return -1;
 	}
 
-	if (stream)
+	if (stream && likely(!(global.tune.options & GTUNE_QUIC_NO_PACING)))
 		pacer = &qcc->tx.pacer;
 
 	ret = qc_send_mux(qcc->conn->handle.qc, frms, pacer);