| 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 | |
| 18 | static 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 | |
| 30 | static struct nft_expr_type nft_reject_inet_type; |
| 31 | static 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 | |
| 39 | static 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 | |
| 48 | static int __init nft_reject_inet_module_init(void) |
| 49 | { |
| 50 | return nft_register_expr(&nft_reject_inet_type); |
| 51 | } |
| 52 | |
| 53 | static void __exit nft_reject_inet_module_exit(void) |
| 54 | { |
| 55 | nft_unregister_expr(&nft_reject_inet_type); |
| 56 | } |
| 57 | |
| 58 | module_init(nft_reject_inet_module_init); |
| 59 | module_exit(nft_reject_inet_module_exit); |
| 60 | |
| 61 | MODULE_LICENSE("GPL"); |
| 62 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); |
| 63 | MODULE_ALIAS_NFT_AF_EXPR(1, "reject"); |