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#include <stdio.h>
#include <xtables.h>
#include <linux/netfilter/xt_cpu.h>
enum {
O_CPU = 0,
};
static void cpu_help(void)
{
printf(
"cpu match options:\n"
"[!] --cpu number Match CPU number\n");
}
static const struct xt_option_entry cpu_opts[] = {
{.name = "cpu", .id = O_CPU, .type = XTTYPE_UINT32,
.flags = XTOPT_INVERT | XTOPT_MAND | XTOPT_PUT,
XTOPT_POINTER(struct xt_cpu_info, cpu)},
XTOPT_TABLEEND,
};
static void cpu_parse(struct xt_option_call *cb)
{
struct xt_cpu_info *cpuinfo = cb->data;
xtables_option_parse(cb);
if (cb->invert)
cpuinfo->invert = true;
}
static void
cpu_print(const void *ip, const struct xt_entry_match *match, int numeric)
{
const struct xt_cpu_info *info = (void *)match->data;
printf(" cpu %s%u", info->invert ? "! ":"", info->cpu);
}
static void cpu_save(const void *ip, const struct xt_entry_match *match)
{
const struct xt_cpu_info *info = (void *)match->data;
printf("%s --cpu %u", info->invert ? " !" : "", info->cpu);
}
static struct xtables_match cpu_match = {
.family = NFPROTO_UNSPEC,
.name = "cpu",
.version = XTABLES_VERSION,
.size = XT_ALIGN(sizeof(struct xt_cpu_info)),
.userspacesize = XT_ALIGN(sizeof(struct xt_cpu_info)),
.help = cpu_help,
.print = cpu_print,
.save = cpu_save,
.x6_parse = cpu_parse,
.x6_options = cpu_opts,
};
void _init(void)
{
xtables_register_match(&cpu_match);
}
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