diff options
Diffstat (limited to 'net/ipv4/netfilter/ipt_length.c')
-rw-r--r-- | net/ipv4/netfilter/ipt_length.c | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/net/ipv4/netfilter/ipt_length.c b/net/ipv4/netfilter/ipt_length.c deleted file mode 100644 index 4eabcfbda9d..00000000000 --- a/net/ipv4/netfilter/ipt_length.c +++ /dev/null @@ -1,64 +0,0 @@ -/* Kernel module to match packet length. */ -/* (C) 1999-2001 James Morris <jmorros@intercode.com.au> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/module.h> -#include <linux/skbuff.h> - -#include <linux/netfilter_ipv4/ipt_length.h> -#include <linux/netfilter_ipv4/ip_tables.h> - -MODULE_AUTHOR("James Morris <jmorris@intercode.com.au>"); -MODULE_DESCRIPTION("IP tables packet length matching module"); -MODULE_LICENSE("GPL"); - -static int -match(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const void *matchinfo, - int offset, - int *hotdrop) -{ - const struct ipt_length_info *info = matchinfo; - u_int16_t pktlen = ntohs(skb->nh.iph->tot_len); - - return (pktlen >= info->min && pktlen <= info->max) ^ info->invert; -} - -static int -checkentry(const char *tablename, - const struct ipt_ip *ip, - void *matchinfo, - unsigned int matchsize, - unsigned int hook_mask) -{ - if (matchsize != IPT_ALIGN(sizeof(struct ipt_length_info))) - return 0; - - return 1; -} - -static struct ipt_match length_match = { - .name = "length", - .match = &match, - .checkentry = &checkentry, - .me = THIS_MODULE, -}; - -static int __init init(void) -{ - return ipt_register_match(&length_match); -} - -static void __exit fini(void) -{ - ipt_unregister_match(&length_match); -} - -module_init(init); -module_exit(fini); |