Adding upstream version 6.1.0.upstream/6.1.0upstream

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

1 files changed, 222 insertions, 0 deletions

diff --git a/tc/m_gact.c b/tc/m_gact.c
new file mode 100644
index 0000000..2ef52cd
--- /dev/null
+++ b/tc/m_gact.c
@@ -0,0 +1,222 @@
+/*
+ * m_gact.c		generic actions module
+ *
+ *		This program is free software; you can distribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ * Authors:  J Hadi Salim (hadi@cyberus.ca)
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#include "utils.h"
+#include "tc_util.h"
+#include <linux/tc_act/tc_gact.h>
+
+/* define to turn on probablity stuff */
+
+#ifdef CONFIG_GACT_PROB
+static const char *prob_n2a(int p)
+{
+	if (p == PGACT_NONE)
+		return "none";
+	if (p == PGACT_NETRAND)
+		return "netrand";
+	if (p == PGACT_DETERM)
+		return "determ";
+	return "none";
+}
+#endif
+
+static void
+explain(void)
+{
+#ifdef CONFIG_GACT_PROB
+	fprintf(stderr, "Usage: ... gact <ACTION> [RAND] [INDEX]\n");
+	fprintf(stderr,
+		"Where: \tACTION := reclassify | drop | continue | pass | pipe |\n"
+		"       \t          goto chain <CHAIN_INDEX> | jump <JUMP_COUNT>\n"
+			"\tRAND := random <RANDTYPE> <ACTION> <VAL>\n"
+			"\tRANDTYPE := netrand | determ\n"
+			"\tVAL : = value not exceeding 10000\n"
+			"\tJUMP_COUNT := Absolute jump from start of action list\n"
+			"\tINDEX := index value used\n"
+			"\n");
+#else
+	fprintf(stderr, "Usage: ... gact <ACTION> [INDEX]\n"
+		"Where: \tACTION := reclassify | drop | continue | pass | pipe |\n"
+		"       \t          goto chain <CHAIN_INDEX> | jump <JUMP_COUNT>\n"
+		"\tINDEX := index value used\n"
+		"\tJUMP_COUNT := Absolute jump from start of action list\n"
+		"\n");
+#endif
+}
+
+
+static void
+usage(void)
+{
+	explain();
+	exit(-1);
+}
+
+static int
+parse_gact(struct action_util *a, int *argc_p, char ***argv_p,
+	   int tca_id, struct nlmsghdr *n)
+{
+	int argc = *argc_p;
+	char **argv = *argv_p;
+	struct tc_gact p = { 0 };
+#ifdef CONFIG_GACT_PROB
+	int rd = 0;
+	struct tc_gact_p pp;
+#endif
+	struct rtattr *tail;
+
+	if (argc < 0)
+		return -1;
+
+	if (!matches(*argv, "gact"))
+		NEXT_ARG();
+	/* we're binding existing gact action to filter by index. */
+	if (!matches(*argv, "index"))
+		goto skip_args;
+	if (parse_action_control(&argc, &argv, &p.action, false))
+		usage();	/* does not return */
+
+#ifdef CONFIG_GACT_PROB
+	if (argc > 0) {
+		if (matches(*argv, "random") == 0) {
+			rd = 1;
+			NEXT_ARG();
+			if (matches(*argv, "netrand") == 0) {
+				NEXT_ARG();
+				pp.ptype = PGACT_NETRAND;
+			} else if  (matches(*argv, "determ") == 0) {
+				NEXT_ARG();
+				pp.ptype = PGACT_DETERM;
+			} else {
+				fprintf(stderr, "Illegal \"random type\"\n");
+				return -1;
+			}
+
+			if (parse_action_control(&argc, &argv,
+						 &pp.paction, false) == -1)
+				usage();
+			if (get_u16(&pp.pval, *argv, 10)) {
+				fprintf(stderr,
+					"Illegal probability val 0x%x\n",
+					pp.pval);
+				return -1;
+			}
+			if (pp.pval > 10000) {
+				fprintf(stderr,
+					"Illegal probability val  0x%x\n",
+					pp.pval);
+				return -1;
+			}
+			argc--;
+			argv++;
+		} else if (matches(*argv, "help") == 0) {
+			usage();
+		}
+	}
+#endif
+
+	if (argc > 0) {
+		if (matches(*argv, "index") == 0) {
+skip_args:
+			NEXT_ARG();
+			if (get_u32(&p.index, *argv, 10)) {
+				fprintf(stderr, "Illegal \"index\"\n");
+				return -1;
+			}
+			argc--;
+			argv++;
+		} else if (matches(*argv, "help") == 0) {
+			usage();
+		}
+	}
+
+	tail = addattr_nest(n, MAX_MSG, tca_id);
+	addattr_l(n, MAX_MSG, TCA_GACT_PARMS, &p, sizeof(p));
+#ifdef CONFIG_GACT_PROB
+	if (rd)
+		addattr_l(n, MAX_MSG, TCA_GACT_PROB, &pp, sizeof(pp));
+#endif
+	addattr_nest_end(n, tail);
+
+	*argc_p = argc;
+	*argv_p = argv;
+	return 0;
+}
+
+static int
+print_gact(struct action_util *au, FILE *f, struct rtattr *arg)
+{
+#ifdef CONFIG_GACT_PROB
+	struct tc_gact_p *pp = NULL;
+	struct tc_gact_p pp_dummy;
+#endif
+	struct tc_gact *p = NULL;
+	struct rtattr *tb[TCA_GACT_MAX + 1];
+
+	print_string(PRINT_ANY, "kind", "%s ", "gact");
+	if (arg == NULL)
+		return 0;
+
+	parse_rtattr_nested(tb, TCA_GACT_MAX, arg);
+
+	if (tb[TCA_GACT_PARMS] == NULL) {
+		fprintf(stderr, "Missing gact parameters\n");
+		return -1;
+	}
+	p = RTA_DATA(tb[TCA_GACT_PARMS]);
+
+	print_action_control(f, "action ", p->action, "");
+#ifdef CONFIG_GACT_PROB
+	if (tb[TCA_GACT_PROB] != NULL) {
+		pp = RTA_DATA(tb[TCA_GACT_PROB]);
+	} else {
+		/* need to keep consistent output */
+		memset(&pp_dummy, 0, sizeof(pp_dummy));
+		pp = &pp_dummy;
+	}
+	open_json_object("prob");
+	print_nl();
+	print_string(PRINT_ANY, "random_type", "\t random type %s",
+		     prob_n2a(pp->ptype));
+	print_action_control(f, " ", pp->paction, " ");
+	print_int(PRINT_ANY, "val", "val %d", pp->pval);
+	close_json_object();
+#endif
+	print_nl();
+	print_uint(PRINT_ANY, "index", "\t index %u", p->index);
+	print_int(PRINT_ANY, "ref", " ref %d", p->refcnt);
+	print_int(PRINT_ANY, "bind", " bind %d", p->bindcnt);
+	if (show_stats) {
+		if (tb[TCA_GACT_TM]) {
+			struct tcf_t *tm = RTA_DATA(tb[TCA_GACT_TM]);
+
+			print_tm(f, tm);
+		}
+	}
+	print_nl();
+	return 0;
+}
+
+struct action_util gact_action_util = {
+	.id = "gact",
+	.parse_aopt = parse_gact,
+	.print_aopt = print_gact,
+};