diff options
Diffstat (limited to 'net/netfilter/xt_CONNMARK.c')
| -rw-r--r-- | net/netfilter/xt_CONNMARK.c | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/net/netfilter/xt_CONNMARK.c b/net/netfilter/xt_CONNMARK.c deleted file mode 100644 index 22506e376be..00000000000 --- a/net/netfilter/xt_CONNMARK.c +++ /dev/null @@ -1,141 +0,0 @@ -/* This kernel module is used to modify the connection mark values, or - * to optionally restore the skb nfmark from the connection mark - * - * Copyright (C) 2002,2004 MARA Systems AB <http://www.marasystems.com> - * by Henrik Nordstrom <hno@marasystems.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include <linux/module.h> -#include <linux/skbuff.h> -#include <linux/ip.h> -#include <net/checksum.h> - -MODULE_AUTHOR("Henrik Nordstrom <hno@marasytems.com>"); -MODULE_DESCRIPTION("IP tables CONNMARK matching module"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("ipt_CONNMARK"); - -#include <linux/netfilter/x_tables.h> -#include <linux/netfilter/xt_CONNMARK.h> -#include <net/netfilter/nf_conntrack_compat.h> - -static unsigned int -target(struct sk_buff **pskb, - const struct net_device *in, - const struct net_device *out, - unsigned int hooknum, - const void *targinfo, - void *userinfo) -{ - const struct xt_connmark_target_info *markinfo = targinfo; - u_int32_t diff; - u_int32_t nfmark; - u_int32_t newmark; - u_int32_t ctinfo; - u_int32_t *ctmark = nf_ct_get_mark(*pskb, &ctinfo); - - if (ctmark) { - switch(markinfo->mode) { - case XT_CONNMARK_SET: - newmark = (*ctmark & ~markinfo->mask) | markinfo->mark; - if (newmark != *ctmark) - *ctmark = newmark; - break; - case XT_CONNMARK_SAVE: - newmark = (*ctmark & ~markinfo->mask) | ((*pskb)->nfmark & markinfo->mask); - if (*ctmark != newmark) - *ctmark = newmark; - break; - case XT_CONNMARK_RESTORE: - nfmark = (*pskb)->nfmark; - diff = (*ctmark ^ nfmark) & markinfo->mask; - if (diff != 0) - (*pskb)->nfmark = nfmark ^ diff; - break; - } - } - - return XT_CONTINUE; -} - -static int -checkentry(const char *tablename, - const void *entry, - void *targinfo, - unsigned int targinfosize, - unsigned int hook_mask) -{ - struct xt_connmark_target_info *matchinfo = targinfo; - if (targinfosize != XT_ALIGN(sizeof(struct xt_connmark_target_info))) { - printk(KERN_WARNING "CONNMARK: targinfosize %u != %Zu\n", - targinfosize, - XT_ALIGN(sizeof(struct xt_connmark_target_info))); - return 0; - } - - if (matchinfo->mode == XT_CONNMARK_RESTORE) { - if (strcmp(tablename, "mangle") != 0) { - printk(KERN_WARNING "CONNMARK: restore can only be called from \"mangle\" table, not \"%s\"\n", tablename); - return 0; - } - } - - if (matchinfo->mark > 0xffffffff || matchinfo->mask > 0xffffffff) { - printk(KERN_WARNING "CONNMARK: Only supports 32bit mark\n"); - return 0; - } - - return 1; -} - -static struct xt_target connmark_reg = { - .name = "CONNMARK", - .target = &target, - .checkentry = &checkentry, - .me = THIS_MODULE -}; -static struct xt_target connmark6_reg = { - .name = "CONNMARK", - .target = &target, - .checkentry = &checkentry, - .me = THIS_MODULE -}; - -static int __init init(void) -{ - int ret; - - need_conntrack(); - - ret = xt_register_target(AF_INET, &connmark_reg); - if (ret) - return ret; - - ret = xt_register_target(AF_INET6, &connmark6_reg); - if (ret) - xt_unregister_target(AF_INET, &connmark_reg); - - return ret; -} - -static void __exit fini(void) -{ - xt_unregister_target(AF_INET, &connmark_reg); - xt_unregister_target(AF_INET6, &connmark6_reg); -} - -module_init(init); -module_exit(fini); |