netfilter: xtables: merge xt_CONNMARK into xt_connmark
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
This commit is contained in:
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28b949885f
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6 changed files with 116 additions and 156 deletions
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@ -1,26 +1,6 @@
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#ifndef _XT_CONNMARK_H_target
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#define _XT_CONNMARK_H_target
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#include <linux/types.h>
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/* Copyright (C) 2002,2004 MARA Systems AB <http://www.marasystems.com>
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* by Henrik Nordstrom <hno@marasystems.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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enum {
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XT_CONNMARK_SET = 0,
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XT_CONNMARK_SAVE,
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XT_CONNMARK_RESTORE
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};
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struct xt_connmark_tginfo1 {
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__u32 ctmark, ctmask, nfmask;
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__u8 mode;
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};
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#include <linux/netfilter/xt_connmark.h>
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#endif /*_XT_CONNMARK_H_target*/
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@ -12,6 +12,17 @@
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* (at your option) any later version.
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*/
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enum {
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XT_CONNMARK_SET = 0,
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XT_CONNMARK_SAVE,
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XT_CONNMARK_RESTORE
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};
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struct xt_connmark_tginfo1 {
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__u32 ctmark, ctmask, nfmask;
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__u8 mode;
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};
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struct xt_connmark_mtinfo1 {
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__u32 mark, mask;
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__u8 invert;
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@ -331,6 +331,18 @@ config NETFILTER_XT_MARK
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"Use netfilter MARK value as routing key") and can also be used by
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other subsystems to change their behavior.
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config NETFILTER_XT_CONNMARK
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tristate 'ctmark target and match support'
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depends on NF_CONNTRACK
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depends on NETFILTER_ADVANCED
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select NF_CONNTRACK_MARK
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---help---
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This option adds the "CONNMARK" target and "connmark" match.
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Netfilter allows you to store a mark value per connection (a.k.a.
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ctmark), similarly to the packet mark (nfmark). Using this
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target and match, you can set and match on this mark.
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# alphabetically ordered list of targets
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comment "Xtables targets"
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@ -351,15 +363,11 @@ config NETFILTER_XT_TARGET_CONNMARK
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tristate '"CONNMARK" target support'
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depends on NF_CONNTRACK
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depends on NETFILTER_ADVANCED
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select NF_CONNTRACK_MARK
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help
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This option adds a `CONNMARK' target, which allows one to manipulate
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the connection mark value. Similar to the MARK target, but
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affects the connection mark value rather than the packet mark value.
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If you want to compile it as a module, say M here and read
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<file:Documentation/kbuild/modules.txt>. The module will be called
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ipt_CONNMARK. If unsure, say `N'.
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select NETFILTER_XT_CONNMARK
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---help---
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This is a backwards-compat option for the user's convenience
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(e.g. when running oldconfig). It selects
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CONFIG_NETFILTER_XT_CONNMARK (combined connmark/CONNMARK module).
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config NETFILTER_XT_TARGET_CONNSECMARK
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tristate '"CONNSECMARK" target support'
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@ -621,14 +629,11 @@ config NETFILTER_XT_MATCH_CONNMARK
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tristate '"connmark" connection mark match support'
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depends on NF_CONNTRACK
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depends on NETFILTER_ADVANCED
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select NF_CONNTRACK_MARK
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help
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This option adds a `connmark' match, which allows you to match the
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connection mark value previously set for the session by `CONNMARK'.
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If you want to compile it as a module, say M here and read
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<file:Documentation/kbuild/modules.txt>. The module will be called
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ipt_connmark. If unsure, say `N'.
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select NETFILTER_XT_CONNMARK
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---help---
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This is a backwards-compat option for the user's convenience
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(e.g. when running oldconfig). It selects
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CONFIG_NETFILTER_XT_CONNMARK (combined connmark/CONNMARK module).
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config NETFILTER_XT_MATCH_CONNTRACK
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tristate '"conntrack" connection tracking match support'
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@ -42,10 +42,10 @@ obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o
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# combos
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obj-$(CONFIG_NETFILTER_XT_MARK) += xt_mark.o
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obj-$(CONFIG_NETFILTER_XT_CONNMARK) += xt_connmark.o
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# targets
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obj-$(CONFIG_NETFILTER_XT_TARGET_CLASSIFY) += xt_CLASSIFY.o
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obj-$(CONFIG_NETFILTER_XT_TARGET_CONNMARK) += xt_CONNMARK.o
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obj-$(CONFIG_NETFILTER_XT_TARGET_CONNSECMARK) += xt_CONNSECMARK.o
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obj-$(CONFIG_NETFILTER_XT_TARGET_CT) += xt_CT.o
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obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o
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@ -66,7 +66,6 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_CLUSTER) += xt_cluster.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_COMMENT) += xt_comment.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_CONNBYTES) += xt_connbytes.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_CONNLIMIT) += xt_connlimit.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_CONNMARK) += xt_connmark.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_CONNTRACK) += xt_conntrack.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_DCCP) += xt_dccp.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_DSCP) += xt_dscp.o
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@ -1,113 +0,0 @@
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/*
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* xt_CONNMARK - Netfilter module to modify the connection mark values
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*
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* Copyright (C) 2002,2004 MARA Systems AB <http://www.marasystems.com>
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* by Henrik Nordstrom <hno@marasystems.com>
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* Copyright © CC Computer Consultants GmbH, 2007 - 2008
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* Jan Engelhardt <jengelh@computergmbh.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/ip.h>
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#include <net/checksum.h>
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MODULE_AUTHOR("Henrik Nordstrom <hno@marasystems.com>");
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MODULE_DESCRIPTION("Xtables: connection mark modification");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("ipt_CONNMARK");
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MODULE_ALIAS("ip6t_CONNMARK");
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#include <linux/netfilter/x_tables.h>
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#include <linux/netfilter/xt_CONNMARK.h>
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#include <net/netfilter/nf_conntrack_ecache.h>
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static unsigned int
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connmark_tg(struct sk_buff *skb, const struct xt_target_param *par)
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{
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const struct xt_connmark_tginfo1 *info = par->targinfo;
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enum ip_conntrack_info ctinfo;
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struct nf_conn *ct;
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u_int32_t newmark;
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ct = nf_ct_get(skb, &ctinfo);
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if (ct == NULL)
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return XT_CONTINUE;
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switch (info->mode) {
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case XT_CONNMARK_SET:
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newmark = (ct->mark & ~info->ctmask) ^ info->ctmark;
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if (ct->mark != newmark) {
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ct->mark = newmark;
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nf_conntrack_event_cache(IPCT_MARK, ct);
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}
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break;
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case XT_CONNMARK_SAVE:
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newmark = (ct->mark & ~info->ctmask) ^
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(skb->mark & info->nfmask);
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if (ct->mark != newmark) {
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ct->mark = newmark;
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nf_conntrack_event_cache(IPCT_MARK, ct);
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}
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break;
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case XT_CONNMARK_RESTORE:
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newmark = (skb->mark & ~info->nfmask) ^
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(ct->mark & info->ctmask);
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skb->mark = newmark;
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break;
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}
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return XT_CONTINUE;
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}
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static bool connmark_tg_check(const struct xt_tgchk_param *par)
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{
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if (nf_ct_l3proto_try_module_get(par->family) < 0) {
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printk(KERN_WARNING "cannot load conntrack support for "
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"proto=%u\n", par->family);
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return false;
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}
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return true;
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}
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static void connmark_tg_destroy(const struct xt_tgdtor_param *par)
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{
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nf_ct_l3proto_module_put(par->family);
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}
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static struct xt_target connmark_tg_reg __read_mostly = {
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.name = "CONNMARK",
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.revision = 1,
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.family = NFPROTO_UNSPEC,
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.checkentry = connmark_tg_check,
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.target = connmark_tg,
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.targetsize = sizeof(struct xt_connmark_tginfo1),
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.destroy = connmark_tg_destroy,
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.me = THIS_MODULE,
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};
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static int __init connmark_tg_init(void)
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{
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return xt_register_target(&connmark_tg_reg);
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}
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static void __exit connmark_tg_exit(void)
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{
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xt_unregister_target(&connmark_tg_reg);
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}
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module_init(connmark_tg_init);
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module_exit(connmark_tg_exit);
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@ -1,5 +1,5 @@
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/*
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* xt_connmark - Netfilter module to match connection mark values
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* xt_connmark - Netfilter module to operate on connection marks
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*
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* Copyright (C) 2002,2004 MARA Systems AB <http://www.marasystems.com>
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* by Henrik Nordstrom <hno@marasystems.com>
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@ -24,15 +24,71 @@
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <net/netfilter/nf_conntrack.h>
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#include <net/netfilter/nf_conntrack_ecache.h>
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#include <linux/netfilter/x_tables.h>
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#include <linux/netfilter/xt_connmark.h>
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MODULE_AUTHOR("Henrik Nordstrom <hno@marasystems.com>");
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MODULE_DESCRIPTION("Xtables: connection mark match");
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MODULE_DESCRIPTION("Xtables: connection mark operations");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("ipt_CONNMARK");
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MODULE_ALIAS("ip6t_CONNMARK");
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MODULE_ALIAS("ipt_connmark");
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MODULE_ALIAS("ip6t_connmark");
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static unsigned int
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connmark_tg(struct sk_buff *skb, const struct xt_target_param *par)
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{
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const struct xt_connmark_tginfo1 *info = par->targinfo;
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enum ip_conntrack_info ctinfo;
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struct nf_conn *ct;
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u_int32_t newmark;
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ct = nf_ct_get(skb, &ctinfo);
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if (ct == NULL)
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return XT_CONTINUE;
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switch (info->mode) {
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case XT_CONNMARK_SET:
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newmark = (ct->mark & ~info->ctmask) ^ info->ctmark;
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if (ct->mark != newmark) {
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ct->mark = newmark;
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nf_conntrack_event_cache(IPCT_MARK, ct);
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}
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break;
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case XT_CONNMARK_SAVE:
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newmark = (ct->mark & ~info->ctmask) ^
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(skb->mark & info->nfmask);
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if (ct->mark != newmark) {
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ct->mark = newmark;
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nf_conntrack_event_cache(IPCT_MARK, ct);
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}
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break;
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case XT_CONNMARK_RESTORE:
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newmark = (skb->mark & ~info->nfmask) ^
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(ct->mark & info->ctmask);
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skb->mark = newmark;
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break;
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}
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return XT_CONTINUE;
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}
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static bool connmark_tg_check(const struct xt_tgchk_param *par)
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{
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if (nf_ct_l3proto_try_module_get(par->family) < 0) {
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printk(KERN_WARNING "cannot load conntrack support for "
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"proto=%u\n", par->family);
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return false;
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}
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return true;
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}
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static void connmark_tg_destroy(const struct xt_tgdtor_param *par)
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{
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nf_ct_l3proto_module_put(par->family);
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}
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static bool
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connmark_mt(const struct sk_buff *skb, const struct xt_match_param *par)
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{
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nf_ct_l3proto_module_put(par->family);
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}
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static struct xt_target connmark_tg_reg __read_mostly = {
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.name = "CONNMARK",
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.revision = 1,
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.family = NFPROTO_UNSPEC,
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.checkentry = connmark_tg_check,
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.target = connmark_tg,
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.targetsize = sizeof(struct xt_connmark_tginfo1),
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.destroy = connmark_tg_destroy,
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.me = THIS_MODULE,
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};
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static struct xt_match connmark_mt_reg __read_mostly = {
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.name = "connmark",
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.revision = 1,
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static int __init connmark_mt_init(void)
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{
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return xt_register_match(&connmark_mt_reg);
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int ret;
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ret = xt_register_target(&connmark_tg_reg);
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if (ret < 0)
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return ret;
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ret = xt_register_match(&connmark_mt_reg);
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if (ret < 0) {
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xt_unregister_target(&connmark_tg_reg);
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return ret;
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}
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return 0;
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}
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static void __exit connmark_mt_exit(void)
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{
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xt_unregister_match(&connmark_mt_reg);
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xt_unregister_target(&connmark_tg_reg);
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}
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module_init(connmark_mt_init);
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