Commit | Line | Data |
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96518518 | 1 | /* |
ef1f7df9 | 2 | * Copyright (c) 2008-2009 Patrick McHardy <kaber@trash.net> |
bee11dc7 | 3 | * Copyright (c) 2013 Eric Leblond <eric@regit.org> |
96518518 PM |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * Development of this code funded by Astaro AG (http://www.astaro.com/) | |
10 | */ | |
11 | ||
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> | |
cc4723ca | 19 | #include <net/netfilter/nft_reject.h> |
bee11dc7 | 20 | |
cc4723ca | 21 | const struct nla_policy nft_reject_policy[NFTA_REJECT_MAX + 1] = { |
96518518 PM |
22 | [NFTA_REJECT_TYPE] = { .type = NLA_U32 }, |
23 | [NFTA_REJECT_ICMP_CODE] = { .type = NLA_U8 }, | |
24 | }; | |
cc4723ca | 25 | EXPORT_SYMBOL_GPL(nft_reject_policy); |
96518518 | 26 | |
cc4723ca PM |
27 | int nft_reject_init(const struct nft_ctx *ctx, |
28 | const struct nft_expr *expr, | |
29 | const struct nlattr * const tb[]) | |
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30 | { |
31 | struct nft_reject *priv = nft_expr_priv(expr); | |
32 | ||
33 | if (tb[NFTA_REJECT_TYPE] == NULL) | |
34 | return -EINVAL; | |
35 | ||
36 | priv->type = ntohl(nla_get_be32(tb[NFTA_REJECT_TYPE])); | |
37 | switch (priv->type) { | |
38 | case NFT_REJECT_ICMP_UNREACH: | |
39 | if (tb[NFTA_REJECT_ICMP_CODE] == NULL) | |
40 | return -EINVAL; | |
41 | priv->icmp_code = nla_get_u8(tb[NFTA_REJECT_ICMP_CODE]); | |
42 | case NFT_REJECT_TCP_RST: | |
43 | break; | |
44 | default: | |
45 | return -EINVAL; | |
46 | } | |
47 | ||
48 | return 0; | |
49 | } | |
cc4723ca | 50 | EXPORT_SYMBOL_GPL(nft_reject_init); |
96518518 | 51 | |
cc4723ca | 52 | int nft_reject_dump(struct sk_buff *skb, const struct nft_expr *expr) |
96518518 PM |
53 | { |
54 | const struct nft_reject *priv = nft_expr_priv(expr); | |
55 | ||
bee11dc7 | 56 | if (nla_put_be32(skb, NFTA_REJECT_TYPE, htonl(priv->type))) |
96518518 PM |
57 | goto nla_put_failure; |
58 | ||
59 | switch (priv->type) { | |
60 | case NFT_REJECT_ICMP_UNREACH: | |
61 | if (nla_put_u8(skb, NFTA_REJECT_ICMP_CODE, priv->icmp_code)) | |
62 | goto nla_put_failure; | |
63 | break; | |
64 | } | |
65 | ||
66 | return 0; | |
67 | ||
68 | nla_put_failure: | |
69 | return -1; | |
70 | } | |
cc4723ca | 71 | EXPORT_SYMBOL_GPL(nft_reject_dump); |
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72 | |
73 | MODULE_LICENSE("GPL"); | |
74 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); |