5 * Bart De Schuymer <bdschuym@pandora.be>
11 #include <linux/netfilter_bridge/ebtables.h>
12 #include <linux/netfilter_bridge/ebt_redirect.h>
13 #include <linux/module.h>
15 #include "../br_private.h"
17 static int ebt_target_redirect(struct sk_buff **pskb, unsigned int hooknr,
18 const struct net_device *in, const struct net_device *out,
19 const void *data, unsigned int datalen)
21 struct ebt_redirect_info *info = (struct ebt_redirect_info *)data;
23 if (skb_shared(*pskb) || skb_cloned(*pskb)) {
26 nskb = skb_copy(*pskb, GFP_ATOMIC);
30 skb_set_owner_w(nskb, (*pskb)->sk);
34 if (hooknr != NF_BR_BROUTING)
35 memcpy((**pskb).mac.ethernet->h_dest,
36 in->br_port->br->dev->dev_addr, ETH_ALEN);
38 memcpy((**pskb).mac.ethernet->h_dest,
39 in->dev_addr, ETH_ALEN);
40 (*pskb)->pkt_type = PACKET_HOST;
44 static int ebt_target_redirect_check(const char *tablename, unsigned int hookmask,
45 const struct ebt_entry *e, void *data, unsigned int datalen)
47 struct ebt_redirect_info *info = (struct ebt_redirect_info *)data;
49 if (datalen != EBT_ALIGN(sizeof(struct ebt_redirect_info)))
51 if (BASE_CHAIN && info->target == EBT_RETURN)
54 if ( (strcmp(tablename, "nat") || hookmask & ~(1 << NF_BR_PRE_ROUTING)) &&
55 (strcmp(tablename, "broute") || hookmask & ~(1 << NF_BR_BROUTING)) )
62 static struct ebt_target redirect_target =
64 .name = EBT_REDIRECT_TARGET,
65 .target = ebt_target_redirect,
66 .check = ebt_target_redirect_check,
70 static int __init init(void)
72 return ebt_register_target(&redirect_target);
75 static void __exit fini(void)
77 ebt_unregister_target(&redirect_target);
82 MODULE_LICENSE("GPL");