Patrick McHardy | 9651851 | 2013-10-14 11:00:02 +0200 | [diff] [blame] | 1 | /* |
Patrick McHardy | ef1f7df | 2013-10-10 11:41:20 +0200 | [diff] [blame] | 2 | * Copyright (c) 2008-2009 Patrick McHardy <kaber@trash.net> |
Patrick McHardy | 9651851 | 2013-10-14 11:00:02 +0200 | [diff] [blame] | 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 | * Development of this code funded by Astaro AG (http://www.astaro.com/) |
| 9 | */ |
| 10 | |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/netlink.h> |
| 14 | #include <linux/netfilter.h> |
| 15 | #include <linux/netfilter/nf_tables.h> |
| 16 | #include <net/netfilter/nf_tables.h> |
| 17 | |
| 18 | struct nft_template { |
| 19 | |
| 20 | }; |
| 21 | |
| 22 | static void nft_template_eval(const struct nft_expr *expr, |
| 23 | struct nft_data data[NFT_REG_MAX + 1], |
| 24 | const struct nft_pktinfo *pkt) |
| 25 | { |
| 26 | struct nft_template *priv = nft_expr_priv(expr); |
| 27 | |
| 28 | } |
| 29 | |
| 30 | static const struct nla_policy nft_template_policy[NFTA_TEMPLATE_MAX + 1] = { |
| 31 | [NFTA_TEMPLATE_ATTR] = { .type = NLA_U32 }, |
| 32 | }; |
| 33 | |
| 34 | static int nft_template_init(const struct nft_ctx *ctx, |
| 35 | const struct nft_expr *expr, |
Patrick McHardy | ef1f7df | 2013-10-10 11:41:20 +0200 | [diff] [blame] | 36 | const struct nlattr * const tb[]) |
Patrick McHardy | 9651851 | 2013-10-14 11:00:02 +0200 | [diff] [blame] | 37 | { |
| 38 | struct nft_template *priv = nft_expr_priv(expr); |
| 39 | |
| 40 | return 0; |
| 41 | } |
| 42 | |
| 43 | static void nft_template_destroy(const struct nft_ctx *ctx, |
| 44 | const struct nft_expr *expr) |
| 45 | { |
| 46 | struct nft_template *priv = nft_expr_priv(expr); |
| 47 | |
| 48 | } |
| 49 | |
| 50 | static int nft_template_dump(struct sk_buff *skb, const struct nft_expr *expr) |
| 51 | { |
| 52 | const struct nft_template *priv = nft_expr_priv(expr); |
| 53 | |
| 54 | NLA_PUT_BE32(skb, NFTA_TEMPLATE_ATTR, priv->field); |
| 55 | return 0; |
| 56 | |
| 57 | nla_put_failure: |
| 58 | return -1; |
| 59 | } |
| 60 | |
Patrick McHardy | ef1f7df | 2013-10-10 11:41:20 +0200 | [diff] [blame] | 61 | static struct nft_expr_type nft_template_type; |
| 62 | static const struct nft_expr_ops nft_template_ops = { |
| 63 | .type = &nft_template_type, |
Patrick McHardy | 9651851 | 2013-10-14 11:00:02 +0200 | [diff] [blame] | 64 | .size = NFT_EXPR_SIZE(sizeof(struct nft_template)), |
Patrick McHardy | 9651851 | 2013-10-14 11:00:02 +0200 | [diff] [blame] | 65 | .eval = nft_template_eval, |
| 66 | .init = nft_template_init, |
| 67 | .destroy = nft_template_destroy, |
| 68 | .dump = nft_template_dump, |
Patrick McHardy | ef1f7df | 2013-10-10 11:41:20 +0200 | [diff] [blame] | 69 | }; |
| 70 | |
| 71 | static struct nft_expr_type nft_template_type __read_mostly = { |
| 72 | .name = "template", |
| 73 | .ops = &nft_template_ops, |
Patrick McHardy | 9651851 | 2013-10-14 11:00:02 +0200 | [diff] [blame] | 74 | .policy = nft_template_policy, |
| 75 | .maxattr = NFTA_TEMPLATE_MAX, |
Patrick McHardy | ef1f7df | 2013-10-10 11:41:20 +0200 | [diff] [blame] | 76 | .owner = THIS_MODULE, |
Patrick McHardy | 9651851 | 2013-10-14 11:00:02 +0200 | [diff] [blame] | 77 | }; |
| 78 | |
| 79 | static int __init nft_template_module_init(void) |
| 80 | { |
Patrick McHardy | ef1f7df | 2013-10-10 11:41:20 +0200 | [diff] [blame] | 81 | return nft_register_expr(&nft_template_type); |
Patrick McHardy | 9651851 | 2013-10-14 11:00:02 +0200 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | static void __exit nft_template_module_exit(void) |
| 85 | { |
Patrick McHardy | ef1f7df | 2013-10-10 11:41:20 +0200 | [diff] [blame] | 86 | nft_unregister_expr(&nft_template_type); |
Patrick McHardy | 9651851 | 2013-10-14 11:00:02 +0200 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | module_init(nft_template_module_init); |
| 90 | module_exit(nft_template_module_exit); |
| 91 | |
| 92 | MODULE_LICENSE("GPL"); |
| 93 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); |
| 94 | MODULE_ALIAS_NFT_EXPR("template"); |