netfilter: nf_tables: add reject module for NFPROTO_INET
[deliverable/linux.git] / net / netfilter / nft_reject_inet.c
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1/*
2 * Copyright (c) 2014 Patrick McHardy <kaber@trash.net>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#include <linux/kernel.h>
10#include <linux/init.h>
11#include <linux/module.h>
12#include <linux/netlink.h>
13#include <linux/netfilter.h>
14#include <linux/netfilter/nf_tables.h>
15#include <net/netfilter/nf_tables.h>
16#include <net/netfilter/nft_reject.h>
17
18static void nft_reject_inet_eval(const struct nft_expr *expr,
19 struct nft_data data[NFT_REG_MAX + 1],
20 const struct nft_pktinfo *pkt)
21{
22 switch (pkt->ops->pf) {
23 case NFPROTO_IPV4:
24 nft_reject_ipv4_eval(expr, data, pkt);
25 case NFPROTO_IPV6:
26 nft_reject_ipv6_eval(expr, data, pkt);
27 }
28}
29
30static struct nft_expr_type nft_reject_inet_type;
31static const struct nft_expr_ops nft_reject_inet_ops = {
32 .type = &nft_reject_inet_type,
33 .size = NFT_EXPR_SIZE(sizeof(struct nft_reject)),
34 .eval = nft_reject_inet_eval,
35 .init = nft_reject_init,
36 .dump = nft_reject_dump,
37};
38
39static struct nft_expr_type nft_reject_inet_type __read_mostly = {
40 .family = NFPROTO_INET,
41 .name = "reject",
42 .ops = &nft_reject_inet_ops,
43 .policy = nft_reject_policy,
44 .maxattr = NFTA_REJECT_MAX,
45 .owner = THIS_MODULE,
46};
47
48static int __init nft_reject_inet_module_init(void)
49{
50 return nft_register_expr(&nft_reject_inet_type);
51}
52
53static void __exit nft_reject_inet_module_exit(void)
54{
55 nft_unregister_expr(&nft_reject_inet_type);
56}
57
58module_init(nft_reject_inet_module_init);
59module_exit(nft_reject_inet_module_exit);
60
61MODULE_LICENSE("GPL");
62MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
63MODULE_ALIAS_NFT_AF_EXPR(1, "reject");
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