2 * 'raw' table, which is the very first hooked in at PRE_ROUTING and LOCAL_OUT .
4 * Copyright (C) 2003 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
6 #include <linux/module.h>
7 #include <linux/netfilter_ipv4/ip_tables.h>
9 #define RAW_VALID_HOOKS ((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT))
14 struct ipt_entry entry;
15 struct ipt_standard_target target;
18 struct ipt_error_target
20 struct ipt_entry_target target;
21 char errorname[IPT_FUNCTION_MAXNAMELEN];
26 struct ipt_entry entry;
27 struct ipt_error_target target;
32 struct ipt_replace repl;
33 struct ipt_standard entries[2];
34 struct ipt_error term;
35 } initial_table __initdata = {
38 .valid_hooks = RAW_VALID_HOOKS,
40 .size = sizeof(struct ipt_standard) * 2 + sizeof(struct ipt_error),
42 [NF_IP_PRE_ROUTING] = 0,
43 [NF_IP_LOCAL_OUT] = sizeof(struct ipt_standard) },
45 [NF_IP_PRE_ROUTING] = 0,
46 [NF_IP_LOCAL_OUT] = sizeof(struct ipt_standard) },
52 .target_offset = sizeof(struct ipt_entry),
53 .next_offset = sizeof(struct ipt_standard),
58 .target_size = IPT_ALIGN(sizeof(struct ipt_standard_target)),
61 .verdict = -NF_ACCEPT - 1,
68 .target_offset = sizeof(struct ipt_entry),
69 .next_offset = sizeof(struct ipt_standard),
74 .target_size = IPT_ALIGN(sizeof(struct ipt_standard_target)),
77 .verdict = -NF_ACCEPT - 1,
84 .target_offset = sizeof(struct ipt_entry),
85 .next_offset = sizeof(struct ipt_error),
91 .target_size = IPT_ALIGN(sizeof(struct ipt_error_target)),
92 .name = IPT_ERROR_TARGET,
101 static struct ipt_table packet_raw = {
103 .table = &initial_table.repl,
104 .valid_hooks = RAW_VALID_HOOKS,
105 .lock = RW_LOCK_UNLOCKED,
109 /* The work comes in here from netfilter.c. */
111 ipt_hook(unsigned int hook,
112 struct sk_buff **pskb,
113 const struct net_device *in,
114 const struct net_device *out,
115 int (*okfn)(struct sk_buff *))
117 return ipt_do_table(pskb, hook, in, out, &packet_raw, NULL);
120 /* 'raw' is the very first table. */
121 static struct nf_hook_ops ipt_ops[] = {
125 .hooknum = NF_IP_PRE_ROUTING,
126 .priority = NF_IP_PRI_RAW
131 .hooknum = NF_IP_LOCAL_OUT,
132 .priority = NF_IP_PRI_RAW
136 static int __init init(void)
141 ret = ipt_register_table(&packet_raw);
146 ret = nf_register_hook(&ipt_ops[0]);
150 ret = nf_register_hook(&ipt_ops[1]);
157 nf_unregister_hook(&ipt_ops[0]);
159 ipt_unregister_table(&packet_raw);
164 static void __exit fini(void)
168 for (i = 0; i < sizeof(ipt_ops)/sizeof(struct nf_hook_ops); i++)
169 nf_unregister_hook(&ipt_ops[i]);
171 ipt_unregister_table(&packet_raw);
176 MODULE_LICENSE("GPL");