diff options
Diffstat (limited to 'net/netfilter/xt_CONNMARK.c')
| -rw-r--r-- | net/netfilter/xt_CONNMARK.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/net/netfilter/xt_CONNMARK.c b/net/netfilter/xt_CONNMARK.c deleted file mode 100644 index 593457068ae1..000000000000 --- a/net/netfilter/xt_CONNMARK.c +++ /dev/null @@ -1,113 +0,0 @@ -/* - * xt_CONNMARK - Netfilter module to modify the connection mark values - * - * Copyright (C) 2002,2004 MARA Systems AB <http://www.marasystems.com> - * by Henrik Nordstrom <hno@marasystems.com> - * Copyright © CC Computer Consultants GmbH, 2007 - 2008 - * Jan Engelhardt <jengelh@computergmbh.de> - * - * 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@marasystems.com>"); -MODULE_DESCRIPTION("Xtables: connection mark modification"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("ipt_CONNMARK"); -MODULE_ALIAS("ip6t_CONNMARK"); - -#include <linux/netfilter/x_tables.h> -#include <linux/netfilter/xt_CONNMARK.h> -#include <net/netfilter/nf_conntrack_ecache.h> - -static unsigned int -connmark_tg(struct sk_buff *skb, const struct xt_target_param *par) -{ - const struct xt_connmark_tginfo1 *info = par->targinfo; - enum ip_conntrack_info ctinfo; - struct nf_conn *ct; - u_int32_t newmark; - - ct = nf_ct_get(skb, &ctinfo); - if (ct == NULL) - return XT_CONTINUE; - - switch (info->mode) { - case XT_CONNMARK_SET: - newmark = (ct->mark & ~info->ctmask) ^ info->ctmark; - if (ct->mark != newmark) { - ct->mark = newmark; - nf_conntrack_event_cache(IPCT_MARK, ct); - } - break; - case XT_CONNMARK_SAVE: - newmark = (ct->mark & ~info->ctmask) ^ - (skb->mark & info->nfmask); - if (ct->mark != newmark) { - ct->mark = newmark; - nf_conntrack_event_cache(IPCT_MARK, ct); - } - break; - case XT_CONNMARK_RESTORE: - newmark = (skb->mark & ~info->nfmask) ^ - (ct->mark & info->ctmask); - skb->mark = newmark; - break; - } - - return XT_CONTINUE; -} - -static bool connmark_tg_check(const struct xt_tgchk_param *par) -{ - if (nf_ct_l3proto_try_module_get(par->family) < 0) { - printk(KERN_WARNING "cannot load conntrack support for " - "proto=%u\n", par->family); - return false; - } - return true; -} - -static void connmark_tg_destroy(const struct xt_tgdtor_param *par) -{ - nf_ct_l3proto_module_put(par->family); -} - -static struct xt_target connmark_tg_reg __read_mostly = { - .name = "CONNMARK", - .revision = 1, - .family = NFPROTO_UNSPEC, - .checkentry = connmark_tg_check, - .target = connmark_tg, - .targetsize = sizeof(struct xt_connmark_tginfo1), - .destroy = connmark_tg_destroy, - .me = THIS_MODULE, -}; - -static int __init connmark_tg_init(void) -{ - return xt_register_target(&connmark_tg_reg); -} - -static void __exit connmark_tg_exit(void) -{ - xt_unregister_target(&connmark_tg_reg); -} - -module_init(connmark_tg_init); -module_exit(connmark_tg_exit); |