blob: ec47aaf3fbd69ca8aa23e32f0671d98ad4995b69 [file] [log] [blame]
/* Shared library add-on to iptables to add IMQ target support. */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <getopt.h>
#include <ip6tables.h>
#include <linux/netfilter_ipv6/ip6_tables.h>
#include <linux/netfilter_ipv6/ip6t_IMQ.h>
/* Function which prints out usage message. */
static void
help(void)
{
printf(
"IMQ target v%s options:\n"
" --todev <N> enqueue to imq<N>, defaults to 0\n",
IPTABLES_VERSION);
}
static struct option opts[] = {
{ "todev", 1, 0, '1' },
{ 0 }
};
/* Initialize the target. */
static void
init(struct ip6t_entry_target *t, unsigned int *nfcache)
{
struct ip6t_imq_info *mr = (struct ip6t_imq_info*)t->data;
mr->todev = 0;
*nfcache |= NFC_UNKNOWN;
}
/* Function which parses command options; returns true if it
ate an option */
static int
parse(int c, char **argv, int invert, unsigned int *flags,
const struct ip6t_entry *entry,
struct ip6t_entry_target **target)
{
struct ip6t_imq_info *mr = (struct ip6t_imq_info*)(*target)->data;
switch(c) {
case '1':
if (check_inverse(optarg, &invert, NULL, 0))
exit_error(PARAMETER_PROBLEM,
"Unexpected `!' after --todev");
mr->todev=atoi(optarg);
break;
default:
return 0;
}
return 1;
}
static void
final_check(unsigned int flags)
{
}
/* Prints out the targinfo. */
static void
print(const struct ip6t_ip6 *ip,
const struct ip6t_entry_target *target,
int numeric)
{
struct ip6t_imq_info *mr = (struct ip6t_imq_info*)target->data;
printf("IMQ: todev %u ", mr->todev);
}
/* Saves the union ipt_targinfo in parsable form to stdout. */
static void
save(const struct ip6t_ip6 *ip, const struct ip6t_entry_target *target)
{
struct ip6t_imq_info *mr = (struct ip6t_imq_info*)target->data;
printf("--todev %u", mr->todev);
}
static
struct ip6tables_target imq
= { NULL,
"IMQ",
IPTABLES_VERSION,
IP6T_ALIGN(sizeof(struct ip6t_imq_info)),
IP6T_ALIGN(sizeof(struct ip6t_imq_info)),
&help,
&init,
&parse,
&final_check,
&print,
&save,
opts
};
void _init(void)
{
register_target6(&imq);
}