+/*
+ * 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 <syslog.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: ACTION := reclassify | drop | continue | pass "
+ "RAND := random <RANDTYPE> <ACTION> <VAL>"
+ "RANDTYPE := netrand | determ"
+ "VAL : = value not exceeding 10000"
+ "INDEX := index value used"
+ "\n");
+#else
+ fprintf(stderr, "Usage: ... gact <ACTION> [INDEX]\n");
+ fprintf(stderr,
+ "Where: ACTION := reclassify | drop | continue | pass "
+ "INDEX := index value used"
+ "\n");
+#endif
+}
+
+#define usage() return(-1)
+
+int
+get_act(char ***argv_p)
+{
+ char **argv = *argv_p;
+
+ if (matches(*argv, "reclassify") == 0) {
+ return TC_ACT_RECLASSIFY;
+ } else if (matches(*argv, "drop") == 0 || matches(*argv, "shot") == 0) {
+ return TC_ACT_SHOT;
+ } else if (matches(*argv, "continue") == 0) {
+ return TC_ACT_UNSPEC;
+ } else if (matches(*argv, "pipe") == 0) {
+ return TC_ACT_PIPE;
+ } else if (matches(*argv, "pass") == 0 || matches(*argv, "ok") == 0) {
+ return TC_ACT_OK;
+ } else {
+ fprintf(stderr,"bad action type %s\n",*argv);
+ return -10;
+ }
+}
+
+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;
+ int ok = 0;
+ int action = TC_POLICE_RECLASSIFY;
+ struct tc_gact p;
+#ifdef CONFIG_GACT_PROB
+ int rd = 0;
+ struct tc_gact_p pp;
+#endif
+ struct rtattr *tail;
+
+ memset(&p, 0, sizeof (p));
+ p.action = TC_POLICE_RECLASSIFY;
+
+ if (argc < 0)
+ return -1;
+
+
+ if (matches(*argv, "gact") == 0) {
+ ok++;
+ } else {
+ action = get_act(&argv);
+ if (action != -10) {
+ p.action = action;
+ ok++;
+ } else {
+ explain();
+ return action;
+ }
+ }
+
+ if (ok) {
+ argc--;
+ argv++;
+ }
+
+#ifdef CONFIG_GACT_PROB
+ if (ok && 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;
+ }
+
+ action = get_act(&argv);
+ if (action != -10) { /* FIXME */
+ pp.paction = action;
+ } else {
+ explain();
+ return -1;
+ }
+ argc--;
+ argv++;
+ 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++;
+ }
+ }
+#endif
+
+ if (argc > 0) {
+ if (matches(*argv, "index") == 0) {
+ NEXT_ARG();
+ if (get_u32(&p.index, *argv, 10)) {
+ fprintf(stderr, "Illegal \"index\"\n");
+ return -1;
+ }
+ argc--;
+ argv++;
+ ok++;
+ }
+ }
+
+ if (!ok)
+ return -1;
+
+ tail = (struct rtattr *) (((void *) n) + NLMSG_ALIGN(n->nlmsg_len));
+ addattr_l(n, MAX_MSG, tca_id, NULL, 0);
+ 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
+ tail->rta_len =
+ (((void *) n) + NLMSG_ALIGN(n->nlmsg_len)) - (void *) tail;
+
+ *argc_p = argc;
+ *argv_p = argv;
+ return 0;
+}
+
+int
+print_gact(struct action_util *au,FILE * f, struct rtattr *arg)
+{
+ SPRINT_BUF(b1);
+#ifdef CONFIG_GACT_PROB
+ SPRINT_BUF(b2);
+ 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];
+
+ if (arg == NULL)
+ return -1;
+
+ memset(tb, 0, sizeof (tb));
+ parse_rtattr(tb, TCA_GACT_MAX, RTA_DATA(arg), RTA_PAYLOAD(arg));
+
+ if (tb[TCA_GACT_PARMS] == NULL) {
+ fprintf(f, "[NULL gact parameters]");
+ return -1;
+ }
+ p = RTA_DATA(tb[TCA_GACT_PARMS]);
+
+ fprintf(f, "gact action %s", action_n2a(p->action, b1, sizeof (b1)));
+#ifdef CONFIG_GACT_PROB
+ if (NULL != tb[TCA_GACT_PROB]) {
+ pp = RTA_DATA(tb[TCA_GACT_PROB]);
+ } else {
+ /* need to keep consistent output */
+ memset(&pp_dummy, 0, sizeof (pp_dummy));
+ pp = &pp_dummy;
+ }
+ fprintf(f, "\n\t random type %s %s val %d",prob_n2a(pp->ptype), action_n2a(pp->paction, b2, sizeof (b2)), pp->pval);
+#endif
+ fprintf(f, "\n\t index %d ref %d bind %d",p->index, p->refcnt, p->bindcnt);
+ if (show_stats) {
+ if (tb[TCA_GACT_TM]) {
+ struct tcf_t *tm = RTA_DATA(tb[TCA_GACT_TM]);
+ print_tm(f,tm);
+ }
+ }
+ fprintf(f, "\n ");
+ return 0;
+}
+
+int
+gact_print_xstats(struct action_util *au, FILE *f, struct rtattr *xstats)
+{
+ return 0;
+}
+
+struct action_util gact_util = {
+ .id = "gact",
+ .parse_aopt = parse_gact,
+ .print_aopt = print_gact,
+ .print_xstats = gact_print_xstats,
+};
projects / thirdparty / iproute2.git / commitdiff
