1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2008-2009 Patrick McHardy <kaber@trash.net>
4 * Copyright (c) 2013 Eric Leblond <eric@regit.org>
6 * Development of this code funded by Astaro AG (http://www.astaro.com/)
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 #include <net/netfilter/ipv6/nf_reject.h>
19 static void nft_reject_ipv6_eval(const struct nft_expr *expr,
20 struct nft_regs *regs,
21 const struct nft_pktinfo *pkt)
23 struct nft_reject *priv = nft_expr_priv(expr);
26 case NFT_REJECT_ICMP_UNREACH:
27 nf_send_unreach6(nft_net(pkt), pkt->skb, priv->icmp_code,
30 case NFT_REJECT_TCP_RST:
31 nf_send_reset6(nft_net(pkt), pkt->skb, nft_hook(pkt));
37 regs->verdict.code = NF_DROP;
40 static struct nft_expr_type nft_reject_ipv6_type;
41 static const struct nft_expr_ops nft_reject_ipv6_ops = {
42 .type = &nft_reject_ipv6_type,
43 .size = NFT_EXPR_SIZE(sizeof(struct nft_reject)),
44 .eval = nft_reject_ipv6_eval,
45 .init = nft_reject_init,
46 .dump = nft_reject_dump,
47 .validate = nft_reject_validate,
50 static struct nft_expr_type nft_reject_ipv6_type __read_mostly = {
51 .family = NFPROTO_IPV6,
53 .ops = &nft_reject_ipv6_ops,
54 .policy = nft_reject_policy,
55 .maxattr = NFTA_REJECT_MAX,
59 static int __init nft_reject_ipv6_module_init(void)
61 return nft_register_expr(&nft_reject_ipv6_type);
64 static void __exit nft_reject_ipv6_module_exit(void)
66 nft_unregister_expr(&nft_reject_ipv6_type);
69 module_init(nft_reject_ipv6_module_init);
70 module_exit(nft_reject_ipv6_module_exit);
72 MODULE_LICENSE("GPL");
73 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
74 MODULE_ALIAS_NFT_AF_EXPR(AF_INET6, "reject");
75 MODULE_DESCRIPTION("IPv6 packet rejection for nftables");