2 * Copyright (c) 2008-2010 Patrick McHardy <kaber@trash.net>
3 * Copyright (c) 2013 Pablo Neira Ayuso <pablo@netfilter.org>
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.
9 * Development of this code funded by Astaro AG (http://www.astaro.com/)
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/netfilter_arp.h>
15 #include <net/netfilter/nf_tables.h>
18 nft_do_chain_arp(void *priv
,
20 const struct nf_hook_state
*state
)
22 struct nft_pktinfo pkt
;
24 nft_set_pktinfo(&pkt
, skb
, state
);
26 return nft_do_chain(&pkt
, priv
);
29 static struct nft_af_info nft_af_arp __read_mostly
= {
30 .family
= NFPROTO_ARP
,
31 .nhooks
= NF_ARP_NUMHOOKS
,
35 [NF_ARP_IN
] = nft_do_chain_arp
,
36 [NF_ARP_OUT
] = nft_do_chain_arp
,
37 [NF_ARP_FORWARD
] = nft_do_chain_arp
,
41 static int nf_tables_arp_init_net(struct net
*net
)
43 net
->nft
.arp
= kmalloc(sizeof(struct nft_af_info
), GFP_KERNEL
);
44 if (net
->nft
.arp
== NULL
)
47 memcpy(net
->nft
.arp
, &nft_af_arp
, sizeof(nft_af_arp
));
49 if (nft_register_afinfo(net
, net
->nft
.arp
) < 0)
58 static void nf_tables_arp_exit_net(struct net
*net
)
60 nft_unregister_afinfo(net
->nft
.arp
);
64 static struct pernet_operations nf_tables_arp_net_ops
= {
65 .init
= nf_tables_arp_init_net
,
66 .exit
= nf_tables_arp_exit_net
,
69 static const struct nf_chain_type filter_arp
= {
71 .type
= NFT_CHAIN_T_DEFAULT
,
72 .family
= NFPROTO_ARP
,
74 .hook_mask
= (1 << NF_ARP_IN
) |
76 (1 << NF_ARP_FORWARD
),
79 static int __init
nf_tables_arp_init(void)
83 nft_register_chain_type(&filter_arp
);
84 ret
= register_pernet_subsys(&nf_tables_arp_net_ops
);
86 nft_unregister_chain_type(&filter_arp
);
91 static void __exit
nf_tables_arp_exit(void)
93 unregister_pernet_subsys(&nf_tables_arp_net_ops
);
94 nft_unregister_chain_type(&filter_arp
);
97 module_init(nf_tables_arp_init
);
98 module_exit(nf_tables_arp_exit
);
100 MODULE_LICENSE("GPL");
101 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
102 MODULE_ALIAS_NFT_FAMILY(3); /* NFPROTO_ARP */