diff options
Diffstat (limited to 'net/ipv4/netfilter/ipt_state.c')
-rw-r--r-- | net/ipv4/netfilter/ipt_state.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/net/ipv4/netfilter/ipt_state.c b/net/ipv4/netfilter/ipt_state.c deleted file mode 100644 index 4d7f16b70ce..00000000000 --- a/net/ipv4/netfilter/ipt_state.c +++ /dev/null @@ -1,74 +0,0 @@ -/* Kernel module to match connection tracking information. */ - -/* (C) 1999-2001 Paul `Rusty' Russell - * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> - * - * 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 <net/netfilter/nf_conntrack_compat.h> -#include <linux/netfilter_ipv4/ip_tables.h> -#include <linux/netfilter_ipv4/ipt_state.h> - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Rusty Russell <rusty@rustcorp.com.au>"); -MODULE_DESCRIPTION("iptables connection tracking state match module"); - -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_state_info *sinfo = matchinfo; - enum ip_conntrack_info ctinfo; - unsigned int statebit; - - if (nf_ct_is_untracked(skb)) - statebit = IPT_STATE_UNTRACKED; - else if (!nf_ct_get_ctinfo(skb, &ctinfo)) - statebit = IPT_STATE_INVALID; - else - statebit = IPT_STATE_BIT(ctinfo); - - return (sinfo->statemask & statebit); -} - -static int check(const char *tablename, - const struct ipt_ip *ip, - void *matchinfo, - unsigned int matchsize, - unsigned int hook_mask) -{ - if (matchsize != IPT_ALIGN(sizeof(struct ipt_state_info))) - return 0; - - return 1; -} - -static struct ipt_match state_match = { - .name = "state", - .match = &match, - .checkentry = &check, - .me = THIS_MODULE, -}; - -static int __init init(void) -{ - need_ip_conntrack(); - return ipt_register_match(&state_match); -} - -static void __exit fini(void) -{ - ipt_unregister_match(&state_match); -} - -module_init(init); -module_exit(fini); |