Adding upstream version 2.9.5.upstream/2.9.5

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 292 insertions, 0 deletions

diff --git a/src/cfgparse-quic.c b/src/cfgparse-quic.c
new file mode 100644
index 0000000..3b38efa
--- /dev/null
+++ b/src/cfgparse-quic.c
@@ -0,0 +1,292 @@
+#include <errno.h>
+#include <string.h>
+
+#include <haproxy/api.h>
+#include <haproxy/cfgparse.h>
+#include <haproxy/errors.h>
+#include <haproxy/global.h>
+#include <haproxy/listener.h>
+#include <haproxy/proxy-t.h>
+#include <haproxy/quic_cc-t.h>
+#include <haproxy/tools.h>
+
+#define QUIC_CC_NEWRENO_STR "newreno"
+#define QUIC_CC_CUBIC_STR   "cubic"
+#define QUIC_CC_NO_CC_STR   "nocc"
+
+static int bind_parse_quic_force_retry(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
+{
+	conf->options |= BC_O_QUIC_FORCE_RETRY;
+	return 0;
+}
+
+/* parse "quic-cc-algo" bind keyword */
+static int bind_parse_quic_cc_algo(char **args, int cur_arg, struct proxy *px,
+                                   struct bind_conf *conf, char **err)
+{
+	struct quic_cc_algo *cc_algo;
+	const char *algo = NULL;
+	char *arg;
+
+	if (!*args[cur_arg + 1]) {
+		memprintf(err, "'%s' : missing control congestion algorithm", args[cur_arg]);
+		goto fail;
+	}
+
+	arg = args[cur_arg + 1];
+	if (strncmp(arg, QUIC_CC_NEWRENO_STR, strlen(QUIC_CC_NEWRENO_STR)) == 0) {
+		/* newreno */
+		algo = QUIC_CC_NEWRENO_STR;
+		cc_algo = &quic_cc_algo_nr;
+		arg += strlen(QUIC_CC_NEWRENO_STR);
+	}
+	else if (strncmp(arg, QUIC_CC_CUBIC_STR, strlen(QUIC_CC_CUBIC_STR)) == 0) {
+		/* cubic */
+		algo = QUIC_CC_CUBIC_STR;
+		cc_algo = &quic_cc_algo_cubic;
+		arg += strlen(QUIC_CC_CUBIC_STR);
+	}
+	else if (strncmp(arg, QUIC_CC_NO_CC_STR, strlen(QUIC_CC_NO_CC_STR)) == 0) {
+		/* nocc */
+		if (!experimental_directives_allowed) {
+			ha_alert("'%s' algo is experimental, must be allowed via a global "
+			         "'expose-experimental-directives'\n", arg);
+			goto fail;
+		}
+
+		algo = QUIC_CC_NO_CC_STR;
+		cc_algo = &quic_cc_algo_nocc;
+		arg += strlen(QUIC_CC_NO_CC_STR);
+	}
+	else {
+		memprintf(err, "'%s' : unknown control congestion algorithm", args[cur_arg + 1]);
+		goto fail;
+	}
+
+	if (*arg++ == '(') {
+		unsigned long cwnd;
+		char *end_opt;
+
+		errno = 0;
+		cwnd = strtoul(arg, &end_opt, 0);
+		if (end_opt == arg || errno != 0) {
+			memprintf(err, "'%s' : could not parse congestion window value", args[cur_arg + 1]);
+			goto fail;
+		}
+
+		if (*end_opt == 'k') {
+			cwnd <<= 10;
+			end_opt++;
+		}
+		else if (*end_opt == 'm') {
+			cwnd <<= 20;
+			end_opt++;
+		}
+		else if (*end_opt == 'g') {
+			cwnd <<= 30;
+			end_opt++;
+		}
+
+		if (*end_opt != ')') {
+			memprintf(err, "'%s' : expects %s(<max window>)", args[cur_arg + 1], algo);
+			goto fail;
+		}
+
+		if (cwnd < 10240 || cwnd > (4UL << 30)) {
+			memprintf(err, "'%s' : should be greater than 10k and smaller than 4g", args[cur_arg + 1]);
+			goto fail;
+		}
+
+		conf->max_cwnd = cwnd;
+	}
+
+	conf->quic_cc_algo = cc_algo;
+	return 0;
+
+ fail:
+	return ERR_ALERT | ERR_FATAL;
+}
+
+static int bind_parse_quic_socket(char **args, int cur_arg, struct proxy *px,
+                                  struct bind_conf *conf, char **err)
+{
+	char *arg;
+	if (!*args[cur_arg + 1]) {
+		memprintf(err, "'%s' : missing argument, use either connection or listener.", args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+
+	arg = args[cur_arg + 1];
+	if (strcmp(arg, "connection") == 0) {
+		conf->quic_mode = QUIC_SOCK_MODE_CONN;
+	}
+	else if (strcmp(arg, "listener") == 0) {
+		conf->quic_mode = QUIC_SOCK_MODE_LSTNR;
+	}
+	else {
+		memprintf(err, "'%s' : unknown argument, use either connection or listener.", args[cur_arg]);
+		return ERR_ALERT | ERR_FATAL;
+	}
+
+	return 0;
+}
+
+static struct bind_kw_list bind_kws = { "QUIC", { }, {
+	{ "quic-force-retry", bind_parse_quic_force_retry, 0 },
+	{ "quic-cc-algo", bind_parse_quic_cc_algo, 1 },
+	{ "quic-socket", bind_parse_quic_socket, 1 },
+	{ NULL, NULL, 0 },
+}};
+
+INITCALL1(STG_REGISTER, bind_register_keywords, &bind_kws);
+
+/* parse "tune.quic.socket-owner", accepts "listener" or "connection" */
+static int cfg_parse_quic_tune_socket_owner(char **args, int section_type,
+                                            struct proxy *curpx,
+                                            const struct proxy *defpx,
+                                            const char *file, int line, char **err)
+{
+	if (too_many_args(1, args, err, NULL))
+		return -1;
+
+	if (strcmp(args[1], "connection") == 0) {
+		global.tune.options |= GTUNE_QUIC_SOCK_PER_CONN;
+	}
+	else if (strcmp(args[1], "listener") == 0) {
+		global.tune.options &= ~GTUNE_QUIC_SOCK_PER_CONN;
+	}
+	else {
+		memprintf(err, "'%s' expects either 'listener' or 'connection' but got '%s'.", args[0], args[1]);
+		return -1;
+	}
+
+	return 0;
+}
+
+/* Must be used to parse tune.quic.* setting which requires a time
+ * as value.
+ * Return -1 on alert, or 0 if succeeded.
+ */
+static int cfg_parse_quic_time(char **args, int section_type,
+                               struct proxy *curpx,
+                               const struct proxy *defpx,
+                               const char *file, int line, char **err)
+{
+	unsigned int time;
+	const char *res, *name, *value;
+	int prefix_len = strlen("tune.quic.");
+
+	if (too_many_args(1, args, err, NULL))
+		return -1;
+
+	name = args[0];
+	value = args[1];
+	res = parse_time_err(value, &time, TIME_UNIT_MS);
+	if (res == PARSE_TIME_OVER) {
+		memprintf(err, "timer overflow in argument '%s' to '%s' "
+		          "(maximum value is 2147483647 ms or ~24.8 days)", value, name);
+		return -1;
+	}
+	else if (res == PARSE_TIME_UNDER) {
+		memprintf(err, "timer underflow in argument '%s' to '%s' "
+		          "(minimum non-null value is 1 ms)", value, name);
+		return -1;
+	}
+	else if (res) {
+		memprintf(err, "unexpected character '%c' in '%s'", *res, name);
+		return -1;
+	}
+
+	if (strcmp(name + prefix_len, "frontend.max-idle-timeout") == 0)
+		global.tune.quic_frontend_max_idle_timeout = time;
+	else if (strcmp(name + prefix_len, "backend.max-idle-timeout") == 0)
+		global.tune.quic_backend_max_idle_timeout = time;
+	else {
+		memprintf(err, "'%s' keyword not unhandled (please report this bug).", args[0]);
+		return -1;
+	}
+
+	return 0;
+}
+
+/* Parse any tune.quic.* setting with strictly positive integer values.
+ * Return -1 on alert, or 0 if succeeded.
+ */
+static int cfg_parse_quic_tune_setting(char **args, int section_type,
+                                       struct proxy *curpx,
+                                       const struct proxy *defpx,
+                                       const char *file, int line, char **err)
+{
+	unsigned int arg = 0;
+	int prefix_len = strlen("tune.quic.");
+	const char *suffix;
+
+	if (too_many_args(1, args, err, NULL))
+		return -1;
+
+	if (*(args[1]) != 0)
+		arg = atoi(args[1]);
+
+	if (arg < 1) {
+		memprintf(err, "'%s' expects a positive integer.", args[0]);
+		return -1;
+	}
+
+	suffix = args[0] + prefix_len;
+	if (strcmp(suffix, "frontend.conn-tx-buffers.limit") == 0)
+		global.tune.quic_streams_buf = arg;
+	else if (strcmp(suffix, "frontend.max-streams-bidi") == 0)
+		global.tune.quic_frontend_max_streams_bidi = arg;
+	else if (strcmp(suffix, "max-frame-loss") == 0)
+		global.tune.quic_max_frame_loss = arg;
+	else if (strcmp(suffix, "reorder-ratio") == 0) {
+		if (arg > 100) {
+			memprintf(err, "'%s' expects an integer argument between 0 and 100.", args[0]);
+			return -1;
+		}
+
+		global.tune.quic_reorder_ratio = arg;
+	}
+	else if (strcmp(suffix, "retry-threshold") == 0)
+		global.tune.quic_retry_threshold = arg;
+	else {
+		memprintf(err, "'%s' keyword not unhandled (please report this bug).", args[0]);
+		return -1;
+	}
+
+	return 0;
+}
+
+/* config parser for global "tune.quic.zero-copy-fwd-send" */
+static int cfg_parse_quic_zero_copy_fwd_snd(char **args, int section_type, struct proxy *curpx,
+					    const struct proxy *defpx, const char *file, int line,
+					    char **err)
+{
+	if (too_many_args(1, args, err, NULL))
+		return -1;
+
+	if (strcmp(args[1], "on") == 0)
+		global.tune.no_zero_copy_fwd &= ~NO_ZERO_COPY_FWD_QUIC_SND;
+	else if (strcmp(args[1], "off") == 0)
+		global.tune.no_zero_copy_fwd |= NO_ZERO_COPY_FWD_QUIC_SND;
+	else {
+		memprintf(err, "'%s' expects 'on' or 'off'.", args[0]);
+		return -1;
+	}
+	return 0;
+}
+
+static struct cfg_kw_list cfg_kws = {ILH, {
+	{ CFG_GLOBAL, "tune.quic.socket-owner", cfg_parse_quic_tune_socket_owner },
+	{ CFG_GLOBAL, "tune.quic.backend.max-idle-timeou", cfg_parse_quic_time },
+	{ CFG_GLOBAL, "tune.quic.frontend.conn-tx-buffers.limit", cfg_parse_quic_tune_setting },
+	{ CFG_GLOBAL, "tune.quic.frontend.max-streams-bidi", cfg_parse_quic_tune_setting },
+	{ CFG_GLOBAL, "tune.quic.frontend.max-idle-timeout", cfg_parse_quic_time },
+	{ 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 },
+	{ CFG_GLOBAL, "tune.quic.zero-copy-fwd-send", cfg_parse_quic_zero_copy_fwd_snd },
+	{ 0, NULL, NULL }
+}};
+
+INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);