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/*
* m_connmark.c Connection tracking marking import
*
* Copyright (c) 2011 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, see <http://www.gnu.org/licenses>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "utils.h"
#include "tc_util.h"
#include <linux/tc_act/tc_connmark.h>
static void
explain(void)
{
fprintf(stderr, "Usage: ... connmark [zone ZONE] [CONTROL] [index <INDEX>]\n");
fprintf(stderr, "where :\n"
"\tZONE is the conntrack zone\n"
"\tCONTROL := reclassify | pipe | drop | continue | ok |\n"
"\t goto chain <CHAIN_INDEX>\n");
}
static void
usage(void)
{
explain();
exit(-1);
}
static int
parse_connmark(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
struct nlmsghdr *n)
{
struct tc_connmark sel = {};
char **argv = *argv_p;
int argc = *argc_p;
int ok = 0;
struct rtattr *tail;
while (argc > 0) {
if (matches(*argv, "connmark") == 0) {
ok = 1;
argc--;
argv++;
} else if (matches(*argv, "help") == 0) {
usage();
} else {
break;
}
}
if (!ok) {
explain();
return -1;
}
if (argc) {
if (matches(*argv, "zone") == 0) {
NEXT_ARG();
if (get_u16(&sel.zone, *argv, 10)) {
fprintf(stderr, "simple: Illegal \"index\"\n");
return -1;
}
argc--;
argv++;
}
}
parse_action_control_dflt(&argc, &argv, &sel.action, false, TC_ACT_PIPE);
if (argc) {
if (matches(*argv, "index") == 0) {
NEXT_ARG();
if (get_u32(&sel.index, *argv, 10)) {
fprintf(stderr, "simple: Illegal \"index\"\n");
return -1;
}
argc--;
argv++;
}
}
tail = NLMSG_TAIL(n);
addattr_l(n, MAX_MSG, tca_id, NULL, 0);
addattr_l(n, MAX_MSG, TCA_CONNMARK_PARMS, &sel, sizeof(sel));
tail->rta_len = (char *)NLMSG_TAIL(n) - (char *)tail;
*argc_p = argc;
*argv_p = argv;
return 0;
}
static int print_connmark(struct action_util *au, FILE *f, struct rtattr *arg)
{
struct rtattr *tb[TCA_CONNMARK_MAX + 1];
struct tc_connmark *ci;
if (arg == NULL)
return -1;
parse_rtattr_nested(tb, TCA_CONNMARK_MAX, arg);
if (tb[TCA_CONNMARK_PARMS] == NULL) {
fprintf(f, "[NULL connmark parameters]");
return -1;
}
ci = RTA_DATA(tb[TCA_CONNMARK_PARMS]);
fprintf(f, " connmark zone %d\n", ci->zone);
fprintf(f, "\t index %u ref %d bind %d", ci->index,
ci->refcnt, ci->bindcnt);
if (show_stats) {
if (tb[TCA_CONNMARK_TM]) {
struct tcf_t *tm = RTA_DATA(tb[TCA_CONNMARK_TM]);
print_tm(f, tm);
}
}
fprintf(f, "\n");
return 0;
}
struct action_util connmark_action_util = {
.id = "connmark",
.parse_aopt = parse_connmark,
.print_aopt = print_connmark,
};
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