/* * IPv6 raw table, a port of the IPv4 raw table to IPv6 * * Copyright (C) 2003 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> */#include <linux/module.h>#include <linux/netfilter_ipv6/ip6_tables.h>#define RAW_VALID_HOOKS ((1 << NF_IP6_PRE_ROUTING) | (1 << NF_IP6_LOCAL_OUT))#if 0#define DEBUGP(x, args...)	printk(KERN_DEBUG x, ## args)#else#define DEBUGP(x, args...)#endif/* Standard entry. */struct ip6t_standard{	struct ip6t_entry entry;	struct ip6t_standard_target target;};struct ip6t_error_target{	struct ip6t_entry_target target;	char errorname[IP6T_FUNCTION_MAXNAMELEN];};struct ip6t_error{	struct ip6t_entry entry;	struct ip6t_error_target target;};static struct{	struct ip6t_replace repl;	struct ip6t_standard entries[2];	struct ip6t_error term;} initial_table __initdata = {	.repl = {		.name = "raw",		.valid_hooks = RAW_VALID_HOOKS,		.num_entries = 3,		.size = sizeof(struct ip6t_standard) * 2 + sizeof(struct ip6t_error),		.hook_entry = {			[NF_IP6_PRE_ROUTING] = 0,			[NF_IP6_LOCAL_OUT] = sizeof(struct ip6t_standard)		},		.underflow = {			[NF_IP6_PRE_ROUTING] = 0,			[NF_IP6_LOCAL_OUT] = sizeof(struct ip6t_standard)		},	},	.entries = {		/* PRE_ROUTING */		{			.entry = {				.target_offset = sizeof(struct ip6t_entry),				.next_offset = sizeof(struct ip6t_standard),			},			.target = {				.target = {					.u = {						.target_size = IP6T_ALIGN(sizeof(struct ip6t_standard_target)),					},				},				.verdict = -NF_ACCEPT - 1,			},		},		/* LOCAL_OUT */		{			.entry = {				.target_offset = sizeof(struct ip6t_entry),				.next_offset = sizeof(struct ip6t_standard),			},			.target = {				.target = {					.u = {						.target_size = IP6T_ALIGN(sizeof(struct ip6t_standard_target)),					},				},				.verdict = -NF_ACCEPT - 1,			},		},	},	/* ERROR */	.term = {		.entry = {			.target_offset = sizeof(struct ip6t_entry),			.next_offset = sizeof(struct ip6t_error),		},		.target = {			.target = {				.u = {					.user = {						.target_size = IP6T_ALIGN(sizeof(struct ip6t_error_target)),						.name = IP6T_ERROR_TARGET,					},				},			},			.errorname = "ERROR",		},	}};static struct ip6t_table packet_raw = { 	.name = "raw", 	.table = &initial_table.repl,	.valid_hooks = RAW_VALID_HOOKS, 	.lock = RW_LOCK_UNLOCKED, 	.me = THIS_MODULE};/* The work comes in here from netfilter.c. */static unsigned intip6t_hook(unsigned int hook,	 struct sk_buff **pskb,	 const struct net_device *in,	 const struct net_device *out,	 int (*okfn)(struct sk_buff *)){	return ip6t_do_table(pskb, hook, in, out, &packet_raw, NULL);}static struct nf_hook_ops ip6t_ops[] = { 	{	  .hook = ip6t_hook, 	  .pf = PF_INET6,	  .hooknum = NF_IP6_PRE_ROUTING,	  .priority = NF_IP6_PRI_FIRST	},	{	  .hook = ip6t_hook, 	  .pf = PF_INET6, 	  .hooknum = NF_IP6_LOCAL_OUT,	  .priority = NF_IP6_PRI_FIRST	},};static int __init init(void){	int ret;	/* Register table */	ret = ip6t_register_table(&packet_raw);	if (ret < 0)		return ret;	/* Register hooks */	ret = nf_register_hook(&ip6t_ops[0]);	if (ret < 0)		goto cleanup_table;	ret = nf_register_hook(&ip6t_ops[1]);	if (ret < 0)		goto cleanup_hook0;	return ret; cleanup_hook0:	nf_unregister_hook(&ip6t_ops[0]); cleanup_table:	ip6t_unregister_table(&packet_raw);	return ret;}static void __exit fini(void){	unsigned int i;	for (i = 0; i < sizeof(ip6t_ops)/sizeof(struct nf_hook_ops); i++)		nf_unregister_hook(&ip6t_ops[i]);	ip6t_unregister_table(&packet_raw);}module_init(init);module_exit(fini);MODULE_LICENSE("GPL");