projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 85f5b308 PNA |
1 | /* |
| 2 | * Copyright (c) 2014 Pablo Neira Ayuso <pablo@netfilter.org> | |
| 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_bridge_eval(const struct nft_expr *expr, | |
| 19 | struct nft_data data[NFT_REG_MAX + 1], | |
| 20 | const struct nft_pktinfo *pkt) | |
| 21 | { | |
| 22 | switch (eth_hdr(pkt->skb)->h_proto) { | |
| 23 | case htons(ETH_P_IP): | |
| 24 | return nft_reject_ipv4_eval(expr, data, pkt); | |
| 25 | case htons(ETH_P_IPV6): | |
| 26 | return nft_reject_ipv6_eval(expr, data, pkt); | |
| 27 | default: | |
| 28 | /* No explicit way to reject this protocol, drop it. */ | |
| 29 | data[NFT_REG_VERDICT].verdict = NF_DROP; | |
| 30 | break; | |
| 31 | } | |
| 32 | } | |
| 33 | ||
| 34 | static struct nft_expr_type nft_reject_bridge_type; | |
| 35 | static const struct nft_expr_ops nft_reject_bridge_ops = { | |
| 36 | .type = &nft_reject_bridge_type, | |
| 37 | .size = NFT_EXPR_SIZE(sizeof(struct nft_reject)), | |
| 38 | .eval = nft_reject_bridge_eval, | |
| 39 | .init = nft_reject_init, | |
| 40 | .dump = nft_reject_dump, | |
| 41 | }; | |
| 42 | ||
| 43 | static struct nft_expr_type nft_reject_bridge_type __read_mostly = { | |
| 44 | .family = NFPROTO_BRIDGE, | |
| 45 | .name = "reject", | |
| 46 | .ops = &nft_reject_bridge_ops, | |
| 47 | .policy = nft_reject_policy, | |
| 48 | .maxattr = NFTA_REJECT_MAX, | |
| 49 | .owner = THIS_MODULE, | |
| 50 | }; | |
| 51 | ||
| 52 | static int __init nft_reject_bridge_module_init(void) | |
| 53 | { | |
| 54 | return nft_register_expr(&nft_reject_bridge_type); | |
| 55 | } | |
| 56 | ||
| 57 | static void __exit nft_reject_bridge_module_exit(void) | |
| 58 | { | |
| 59 | nft_unregister_expr(&nft_reject_bridge_type); | |
| 60 | } | |
| 61 | ||
| 62 | module_init(nft_reject_bridge_module_init); | |
| 63 | module_exit(nft_reject_bridge_module_exit); | |
| 64 | ||
| 65 | MODULE_LICENSE("GPL"); | |
| 66 | MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>"); | |
| 67 | MODULE_ALIAS_NFT_AF_EXPR(AF_BRIDGE, "reject"); |