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netfilter: bridge: nf_tables: add filter chain type

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This patch adds the filter chain type which is required to
create filter chains in the bridge family from userspace.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2013-10-28 17:58:07 +01:00
parent 98c37b6b01
commit 46413825a7
1 changed files with 39 additions and 2 deletions
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41
net/bridge/netfilter/nf_tables_bridge.c
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@ -1,5 +1,6 @@
/* /*
* Copyright (c) 2008 Patrick McHardy <kaber@trash.net> * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
* Copyright (c) 2013 Pablo Neira Ayuso <pablo@netfilter.org>
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License version 2 as
@ -47,14 +48,50 @@ static struct pernet_operations nf_tables_bridge_net_ops = {
.exit = nf_tables_bridge_exit_net, .exit = nf_tables_bridge_exit_net,
}; };
static unsigned int
nft_do_chain_bridge(const struct nf_hook_ops *ops,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct nft_pktinfo pkt;
nft_set_pktinfo(&pkt, ops, skb, in, out);
return nft_do_chain_pktinfo(&pkt, ops);
}
static struct nf_chain_type filter_bridge = {
.family = NFPROTO_BRIDGE,
.name = "filter",
.type = NFT_CHAIN_T_DEFAULT,
.hook_mask = (1 << NF_BR_LOCAL_IN) |
(1 << NF_BR_FORWARD) |
(1 << NF_BR_LOCAL_OUT),
.fn = {
[NF_BR_LOCAL_IN] = nft_do_chain_bridge,
[NF_BR_FORWARD] = nft_do_chain_bridge,
[NF_BR_LOCAL_OUT] = nft_do_chain_bridge,
},
};
static int __init nf_tables_bridge_init(void) static int __init nf_tables_bridge_init(void)
{ {
return register_pernet_subsys(&nf_tables_bridge_net_ops); int ret;
nft_register_chain_type(&filter_bridge);
ret = register_pernet_subsys(&nf_tables_bridge_net_ops);
if (ret < 0)
nft_unregister_chain_type(&filter_bridge);
return ret;
} }
static void __exit nf_tables_bridge_exit(void) static void __exit nf_tables_bridge_exit(void)
{ {
return unregister_pernet_subsys(&nf_tables_bridge_net_ops); unregister_pernet_subsys(&nf_tables_bridge_net_ops);
nft_unregister_chain_type(&filter_bridge);
} }
module_init(nf_tables_bridge_init); module_init(nf_tables_bridge_init);