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-rw-r--r--src/cfgparse-quic.c292
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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-15 18:53:04 +0000