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12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/netlink.h>
16#include <linux/netfilter.h>
17#include <linux/netfilter/nf_tables.h>
18#include <net/netfilter/nf_tables.h>
19#include <net/netfilter/nft_reject.h>
20#include <net/netfilter/ipv6/nf_reject.h>
21
22static void nft_reject_ipv6_eval(const struct nft_expr *expr,
23 struct nft_regs *regs,
24 const struct nft_pktinfo *pkt)
25{
26 struct nft_reject *priv = nft_expr_priv(expr);
27
28 switch (priv->type) {
29 case NFT_REJECT_ICMP_UNREACH:
30 nf_send_unreach6(nft_net(pkt), pkt->skb, priv->icmp_code,
31 nft_hook(pkt));
32 break;
33 case NFT_REJECT_TCP_RST:
34 nf_send_reset6(nft_net(pkt), pkt->skb, nft_hook(pkt));
35 break;
36 default:
37 break;
38 }
39
40 regs->verdict.code = NF_DROP;
41}
42
43static struct nft_expr_type nft_reject_ipv6_type;
44static const struct nft_expr_ops nft_reject_ipv6_ops = {
45 .type = &nft_reject_ipv6_type,
46 .size = NFT_EXPR_SIZE(sizeof(struct nft_reject)),
47 .eval = nft_reject_ipv6_eval,
48 .init = nft_reject_init,
49 .dump = nft_reject_dump,
50 .validate = nft_reject_validate,
51};
52
53static struct nft_expr_type nft_reject_ipv6_type __read_mostly = {
54 .family = NFPROTO_IPV6,
55 .name = "reject",
56 .ops = &nft_reject_ipv6_ops,
57 .policy = nft_reject_policy,
58 .maxattr = NFTA_REJECT_MAX,
59 .owner = THIS_MODULE,
60};
61
62static int __init nft_reject_ipv6_module_init(void)
63{
64 return nft_register_expr(&nft_reject_ipv6_type);
65}
66
67static void __exit nft_reject_ipv6_module_exit(void)
68{
69 nft_unregister_expr(&nft_reject_ipv6_type);
70}
71
72module_init(nft_reject_ipv6_module_init);
73module_exit(nft_reject_ipv6_module_exit);
74
75MODULE_LICENSE("GPL");
76MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
77MODULE_ALIAS_NFT_AF_EXPR(AF_INET6, "reject");
78