Commit | Line | Data |
---|---|---|
9ba1f726 AB |
1 | /* |
2 | * Copyright (c) 2014 Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com> | |
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/nf_nat.h> | |
17 | #include <net/netfilter/nft_masq.h> | |
18 | ||
19 | const struct nla_policy nft_masq_policy[NFTA_MASQ_MAX + 1] = { | |
20 | [NFTA_MASQ_FLAGS] = { .type = NLA_U32 }, | |
21 | }; | |
22 | EXPORT_SYMBOL_GPL(nft_masq_policy); | |
23 | ||
24 | int nft_masq_init(const struct nft_ctx *ctx, | |
25 | const struct nft_expr *expr, | |
26 | const struct nlattr * const tb[]) | |
27 | { | |
28 | struct nft_masq *priv = nft_expr_priv(expr); | |
29 | ||
30 | if (tb[NFTA_MASQ_FLAGS] == NULL) | |
31 | return 0; | |
32 | ||
33 | priv->flags = ntohl(nla_get_be32(tb[NFTA_MASQ_FLAGS])); | |
34 | if (priv->flags & ~NF_NAT_RANGE_MASK) | |
35 | return -EINVAL; | |
36 | ||
37 | return 0; | |
38 | } | |
39 | EXPORT_SYMBOL_GPL(nft_masq_init); | |
40 | ||
41 | int nft_masq_dump(struct sk_buff *skb, const struct nft_expr *expr) | |
42 | { | |
43 | const struct nft_masq *priv = nft_expr_priv(expr); | |
44 | ||
45 | if (priv->flags == 0) | |
46 | return 0; | |
47 | ||
48 | if (nla_put_be32(skb, NFTA_MASQ_FLAGS, htonl(priv->flags))) | |
49 | goto nla_put_failure; | |
50 | ||
51 | return 0; | |
52 | ||
53 | nla_put_failure: | |
54 | return -1; | |
55 | } | |
56 | EXPORT_SYMBOL_GPL(nft_masq_dump); | |
57 | ||
58 | MODULE_LICENSE("GPL"); | |
59 | MODULE_AUTHOR("Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>"); |