projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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[]) | |
| 96518518 PM |
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); |
| 96518518 PM |
72 | |
| 73 | MODULE_LICENSE("GPL"); | |
| 74 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); |