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/*
Experimental Netfilter Crap
Copyright (C) 2006 Jonathan Zarate
*/
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/file.h>
#include <net/sock.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter_ipv4/ipt_exp.h>
#include "../../bridge/br_private.h"
static int match(const struct sk_buff *skb, const struct net_device *in, const struct net_device *out,
const void *matchinfo, int offset, const void *hdr, u_int16_t datalen, int *hotdrop)
{
// const struct ipt_exp_info *info = matchinfo;
if ((skb->mac.raw >= skb->head) && ((skb->mac.raw + ETH_HLEN) <= skb->data)) {
printk(KERN_INFO "exp src=%02X:%02X:%02X:%02X:%02X:%02X dst=%02X:%02X:%02X:%02X:%02X:%02X\n",
skb->mac.ethernet->h_source[0], skb->mac.ethernet->h_source[1], skb->mac.ethernet->h_source[2],
skb->mac.ethernet->h_source[3], skb->mac.ethernet->h_source[4], skb->mac.ethernet->h_source[5],
skb->mac.ethernet->h_dest[0], skb->mac.ethernet->h_dest[1], skb->mac.ethernet->h_dest[2],
skb->mac.ethernet->h_dest[3], skb->mac.ethernet->h_dest[4], skb->mac.ethernet->h_dest[5]);
return 1;
}
printk(KERN_INFO "exp mac=%p head=%p in=%p\n", skb->mac.raw, skb->head, in);
return 0;
}
static int checkentry(const char *tablename, const struct ipt_ip *ip, void *matchinfo,
unsigned int matchsize, unsigned int hook_mask)
{
return (matchsize == IPT_ALIGN(sizeof(struct ipt_exp_info)));
}
static struct ipt_match exp_match
= { { NULL, NULL }, "exp", &match, &checkentry, NULL, THIS_MODULE };
static int __init init(void)
{
printk(KERN_INFO "exp init " __DATE__ " " __TIME__ "\n");
return ipt_register_match(&exp_match);
}
static void __exit fini(void)
{
printk(KERN_INFO "exp fini\n");
ipt_unregister_match(&exp_match);
}
module_init(init);
module_exit(fini);
MODULE_LICENSE("GPL");
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