| /* |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/netlink.h> |
| #include <linux/netfilter.h> |
| #include <linux/netfilter/nf_tables.h> |
| #include <net/netfilter/nf_tables_core.h> |
| #include <net/netfilter/nf_tables.h> |
| |
| #include <net/netfilter/nft_fib.h> |
| |
| static void nft_fib_inet_eval(const struct nft_expr *expr, |
| struct nft_regs *regs, |
| const struct nft_pktinfo *pkt) |
| { |
| const struct nft_fib *priv = nft_expr_priv(expr); |
| |
| switch (nft_pf(pkt)) { |
| case NFPROTO_IPV4: |
| switch (priv->result) { |
| case NFT_FIB_RESULT_OIF: |
| case NFT_FIB_RESULT_OIFNAME: |
| return nft_fib4_eval(expr, regs, pkt); |
| case NFT_FIB_RESULT_ADDRTYPE: |
| return nft_fib4_eval_type(expr, regs, pkt); |
| } |
| break; |
| case NFPROTO_IPV6: |
| switch (priv->result) { |
| case NFT_FIB_RESULT_OIF: |
| case NFT_FIB_RESULT_OIFNAME: |
| return nft_fib6_eval(expr, regs, pkt); |
| case NFT_FIB_RESULT_ADDRTYPE: |
| return nft_fib6_eval_type(expr, regs, pkt); |
| } |
| break; |
| } |
| |
| regs->verdict.code = NF_DROP; |
| } |
| |
| static struct nft_expr_type nft_fib_inet_type; |
| static const struct nft_expr_ops nft_fib_inet_ops = { |
| .type = &nft_fib_inet_type, |
| .size = NFT_EXPR_SIZE(sizeof(struct nft_fib)), |
| .eval = nft_fib_inet_eval, |
| .init = nft_fib_init, |
| .dump = nft_fib_dump, |
| .validate = nft_fib_validate, |
| }; |
| |
| static struct nft_expr_type nft_fib_inet_type __read_mostly = { |
| .family = NFPROTO_INET, |
| .name = "fib", |
| .ops = &nft_fib_inet_ops, |
| .policy = nft_fib_policy, |
| .maxattr = NFTA_FIB_MAX, |
| .owner = THIS_MODULE, |
| }; |
| |
| static int __init nft_fib_inet_module_init(void) |
| { |
| return nft_register_expr(&nft_fib_inet_type); |
| } |
| |
| static void __exit nft_fib_inet_module_exit(void) |
| { |
| nft_unregister_expr(&nft_fib_inet_type); |
| } |
| |
| module_init(nft_fib_inet_module_init); |
| module_exit(nft_fib_inet_module_exit); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Florian Westphal <fw@strlen.de>"); |
| MODULE_ALIAS_NFT_AF_EXPR(1, "fib"); |