+diff -urN linux.old/include/linux/netfilter_ipv4/ip_conntrack.h linux.dev/include/linux/netfilter_ipv4/ip_conntrack.h
+--- linux.old/include/linux/netfilter_ipv4/ip_conntrack.h 2005-08-20 20:02:06.619827000 +0200
++++ linux.dev/include/linux/netfilter_ipv4/ip_conntrack.h 2005-08-20 20:19:23.302029232 +0200
+@@ -226,6 +226,9 @@
+ unsigned int app_data_len;
+ } layer7;
+ #endif
++#if defined(CONFIG_IP_NF_CONNTRACK_MARK)
++ unsigned long mark;
++#endif
+ };
+
+ /* get master conntrack via master expectation */
+diff -urN linux.old/include/linux/netfilter_ipv4/ipt_CONNMARK.h linux.dev/include/linux/netfilter_ipv4/ipt_CONNMARK.h
+--- linux.old/include/linux/netfilter_ipv4/ipt_CONNMARK.h 1970-01-01 01:00:00.000000000 +0100
++++ linux.dev/include/linux/netfilter_ipv4/ipt_CONNMARK.h 2005-08-20 20:19:41.058329864 +0200
+@@ -0,0 +1,25 @@
++#ifndef _IPT_CONNMARK_H_target
++#define _IPT_CONNMARK_H_target
++
++/* 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.
++ */
++
++enum {
++ IPT_CONNMARK_SET = 0,
++ IPT_CONNMARK_SAVE,
++ IPT_CONNMARK_RESTORE
++};
++
++struct ipt_connmark_target_info {
++ unsigned long mark;
++ unsigned long mask;
++ u_int8_t mode;
++};
++
++#endif /*_IPT_CONNMARK_H_target*/
+diff -urN linux.old/include/linux/netfilter_ipv4/ipt_connmark.h linux.dev/include/linux/netfilter_ipv4/ipt_connmark.h
+--- linux.old/include/linux/netfilter_ipv4/ipt_connmark.h 1970-01-01 01:00:00.000000000 +0100
++++ linux.dev/include/linux/netfilter_ipv4/ipt_connmark.h 2005-08-20 20:19:41.058329864 +0200
+@@ -0,0 +1,18 @@
++#ifndef _IPT_CONNMARK_H
++#define _IPT_CONNMARK_H
++
++/* 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.
++ */
++
++struct ipt_connmark_info {
++ unsigned long mark, mask;
++ u_int8_t invert;
++};
++
++#endif /*_IPT_CONNMARK_H*/
+diff -urN linux.old/net/ipv4/netfilter/Config.in linux.dev/net/ipv4/netfilter/Config.in
+--- linux.old/net/ipv4/netfilter/Config.in 2005-08-20 20:02:09.325416000 +0200
++++ linux.dev/net/ipv4/netfilter/Config.in 2005-08-20 20:29:11.546602464 +0200
+@@ -6,7 +6,8 @@
+
+ tristate 'Connection tracking (required for masq/NAT)' CONFIG_IP_NF_CONNTRACK
+ if [ "$CONFIG_IP_NF_CONNTRACK" != "n" ]; then
+- dep_tristate ' FTP protocol support' CONFIG_IP_NF_FTP $CONFIG_IP_NF_CONNTRACK
++ bool ' Connection mark tracking support' CONFIG_IP_NF_CONNTRACK_MARK
++ dep_tristate ' FTP protocol support' CONFIG_IP_NF_FTP $CONFIG_IP_NF_CONNTRACKa
+ dep_tristate ' Amanda protocol support' CONFIG_IP_NF_AMANDA $CONFIG_IP_NF_CONNTRACK
+ dep_tristate ' TFTP protocol support' CONFIG_IP_NF_TFTP $CONFIG_IP_NF_CONNTRACK
+ dep_tristate ' IRC protocol support' CONFIG_IP_NF_IRC $CONFIG_IP_NF_CONNTRACK
+@@ -42,6 +43,9 @@
+ if [ "$CONFIG_IP_NF_CONNTRACK" != "n" ]; then
+ dep_tristate ' Connection state match support' CONFIG_IP_NF_MATCH_STATE $CONFIG_IP_NF_CONNTRACK $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' Connection tracking match support' CONFIG_IP_NF_MATCH_CONNTRACK $CONFIG_IP_NF_CONNTRACK $CONFIG_IP_NF_IPTABLES
++ if [ "$CONFIG_IP_NF_CONNTRACK_MARK" != "n" ]; then
++ dep_tristate ' Connection mark match support' CONFIG_IP_NF_MATCH_CONNMARK $CONFIG_IP_NF_IPTABLES
++ fi
+ fi
+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
+ dep_tristate ' Unclean match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_UNCLEAN $CONFIG_IP_NF_IPTABLES
+@@ -125,6 +129,9 @@
+
+ dep_tristate ' MARK target support' CONFIG_IP_NF_TARGET_MARK $CONFIG_IP_NF_MANGLE
+ fi
++ if [ "$CONFIG_IP_NF_CONNTRACK_MARK" != "n" ]; then
++ dep_tristate ' CONNMARK target support' CONFIG_IP_NF_TARGET_CONNMARK $CONFIG_IP_NF_IPTABLES
++ fi
+ dep_tristate ' LOG target support' CONFIG_IP_NF_TARGET_LOG $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' TTL target support' CONFIG_IP_NF_TARGET_TTL $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' ULOG target support' CONFIG_IP_NF_TARGET_ULOG $CONFIG_IP_NF_IPTABLES
+diff -urN linux.old/net/ipv4/netfilter/Makefile linux.dev/net/ipv4/netfilter/Makefile
+--- linux.old/net/ipv4/netfilter/Makefile 2005-08-20 20:02:09.326416000 +0200
++++ linux.dev/net/ipv4/netfilter/Makefile 2005-08-20 20:29:54.081136232 +0200
+@@ -93,6 +93,7 @@
+
+ obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o
+ obj-$(CONFIG_IP_NF_MATCH_STATE) += ipt_state.o
++obj-$(CONFIG_IP_NF_MATCH_CONNMARK) += ipt_connmark.o
+ obj-$(CONFIG_IP_NF_MATCH_CONNTRACK) += ipt_conntrack.o
+ obj-$(CONFIG_IP_NF_MATCH_UNCLEAN) += ipt_unclean.o
+ obj-$(CONFIG_IP_NF_MATCH_TCPMSS) += ipt_tcpmss.o
+@@ -110,6 +111,7 @@
+ obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
+ obj-$(CONFIG_IP_NF_NAT_SNMP_BASIC) += ip_nat_snmp_basic.o
+ obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
++obj-$(CONFIG_IP_NF_TARGET_CONNMARK) += ipt_CONNMARK.o
+ obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o
+ obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o
+ obj-$(CONFIG_IP_NF_TARGET_TCPMSS) += ipt_TCPMSS.o
+diff -urN linux.old/net/ipv4/netfilter/ip_conntrack_core.c linux.dev/net/ipv4/netfilter/ip_conntrack_core.c
+--- linux.old/net/ipv4/netfilter/ip_conntrack_core.c 2005-08-20 20:02:06.828795000 +0200
++++ linux.dev/net/ipv4/netfilter/ip_conntrack_core.c 2005-08-20 20:33:23.308328864 +0200
+@@ -755,6 +755,9 @@
+ __set_bit(IPS_EXPECTED_BIT, &conntrack->status);
+ conntrack->master = expected;
+ expected->sibling = conntrack;
++#ifdef CONFIG_IP_NF_CONNTRACK_MARK
++ conntrack->mark = expected->expectant->mark;
++#endif
+ LIST_DELETE(&ip_conntrack_expect_list, expected);
+ expected->expectant->expecting--;
+ nf_conntrack_get(&master_ct(conntrack)->infos[0]);
+diff -urN linux.old/net/ipv4/netfilter/ip_conntrack_standalone.c linux.dev/net/ipv4/netfilter/ip_conntrack_standalone.c
+--- linux.old/net/ipv4/netfilter/ip_conntrack_standalone.c 2005-08-20 20:02:06.583833000 +0200
++++ linux.dev/net/ipv4/netfilter/ip_conntrack_standalone.c 2005-08-20 20:32:15.364657872 +0200
+@@ -107,6 +107,9 @@
+ len += sprintf(buffer + len, "[ASSURED] ");
+ len += sprintf(buffer + len, "use=%u ",
+ atomic_read(&conntrack->ct_general.use));
++ #if defined(CONFIG_IP_NF_CONNTRACK_MARK)
++ len += sprintf(buffer + len, "mark=%ld ", conntrack->mark);
++ #endif
+
+ #if defined(CONFIG_IP_NF_MATCH_LAYER7) || defined(CONFIG_IP_NF_MATCH_LAYER7_MODULE)
+ if(conntrack->layer7.app_proto)
+diff -urN linux.old/net/ipv4/netfilter/ipt_CONNMARK.c linux.dev/net/ipv4/netfilter/ipt_CONNMARK.c
+--- linux.old/net/ipv4/netfilter/ipt_CONNMARK.c 1970-01-01 01:00:00.000000000 +0100
++++ linux.dev/net/ipv4/netfilter/ipt_CONNMARK.c 2005-08-20 20:21:28.666970864 +0200
+@@ -0,0 +1,118 @@
++/* 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");
++
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ipt_CONNMARK.h>
++#include <linux/netfilter_ipv4/ip_conntrack.h>
++
++static unsigned int
++target(struct sk_buff **pskb,
++ unsigned int hooknum,
++ const struct net_device *in,
++ const struct net_device *out,
++ const void *targinfo,
++ void *userinfo)
++{
++ const struct ipt_connmark_target_info *markinfo = targinfo;
++ unsigned long diff;
++ unsigned long nfmark;
++ unsigned long newmark;
++
++ enum ip_conntrack_info ctinfo;
++ struct ip_conntrack *ct = ip_conntrack_get((*pskb), &ctinfo);
++ if (ct) {
++ switch(markinfo->mode) {
++ case IPT_CONNMARK_SET:
++ newmark = (ct->mark & ~markinfo->mask) | markinfo->mark;
++ if (newmark != ct->mark)
++ ct->mark = newmark;
++ break;
++ case IPT_CONNMARK_SAVE:
++ newmark = (ct->mark & ~markinfo->mask) | ((*pskb)->nfmark & markinfo->mask);
++ if (ct->mark != newmark)
++ ct->mark = newmark;
++ break;
++ case IPT_CONNMARK_RESTORE:
++ nfmark = (*pskb)->nfmark;
++ diff = (ct->mark ^ nfmark & markinfo->mask);
++ if (diff != 0) {
++ (*pskb)->nfmark = nfmark ^ diff;
++ (*pskb)->nfcache |= NFC_ALTERED;
++ }
++ break;
++ }
++ }
++
++ return IPT_CONTINUE;
++}
++
++static int
++checkentry(const char *tablename,
++ const struct ipt_entry *e,
++ void *targinfo,
++ unsigned int targinfosize,
++ unsigned int hook_mask)
++{
++ struct ipt_connmark_target_info *matchinfo = targinfo;
++ if (targinfosize != IPT_ALIGN(sizeof(struct ipt_connmark_target_info))) {
++ printk(KERN_WARNING "CONNMARK: targinfosize %u != %Zu\n",
++ targinfosize,
++ IPT_ALIGN(sizeof(struct ipt_connmark_target_info)));
++ return 0;
++ }
++
++ if (matchinfo->mode == IPT_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;
++ }
++ }
++
++ return 1;
++}
++
++static struct ipt_target ipt_connmark_reg = {
++ .name = "CONNMARK",
++ .target = &target,
++ .checkentry = &checkentry,
++ .me = THIS_MODULE
++};
++
++static int __init init(void)
++{
++ return ipt_register_target(&ipt_connmark_reg);
++}
++
++static void __exit fini(void)
++{
++ ipt_unregister_target(&ipt_connmark_reg);
++}
++
++module_init(init);
++module_exit(fini);
+diff -urN linux.old/net/ipv4/netfilter/ipt_connmark.c linux.dev/net/ipv4/netfilter/ipt_connmark.c
+--- linux.old/net/ipv4/netfilter/ipt_connmark.c 1970-01-01 01:00:00.000000000 +0100
++++ linux.dev/net/ipv4/netfilter/ipt_connmark.c 2005-08-20 20:21:28.666970864 +0200
+@@ -0,0 +1,83 @@
++/* This kernel module matches connection mark values set by the
++ * CONNMARK target
++ *
++ * 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>
++
++MODULE_AUTHOR("Henrik Nordstrom <hno@marasytems.com>");
++MODULE_DESCRIPTION("IP tables connmark match module");
++MODULE_LICENSE("GPL");
++
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ipt_connmark.h>
++#include <linux/netfilter_ipv4/ip_conntrack.h>
++
++static int
++match(const struct sk_buff *skb,
++ const struct net_device *in,
++ const struct net_device *out,
++ const void *matchinfo,
++ int offset,
++ const void *hdr,
++ u_int16_t datalen,
++ int *hotdrop)
++{
++ const struct ipt_connmark_info *info = matchinfo;
++ enum ip_conntrack_info ctinfo;
++ struct ip_conntrack *ct = ip_conntrack_get((struct sk_buff *)skb, &ctinfo);
++ if (!ct)
++ return 0;
++
++ return ((ct->mark & info->mask) == info->mark) ^ 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_connmark_info)))
++ return 0;
++
++ return 1;
++}
++
++static struct ipt_match connmark_match = {
++ .name = "connmark",
++ .match = &match,
++ .checkentry = &checkentry,
++ .me = THIS_MODULE
++};
++
++static int __init init(void)
++{
++ return ipt_register_match(&connmark_match);
++}
++
++static void __exit fini(void)
++{
++ ipt_unregister_match(&connmark_match);
++}
++
++module_init(init);
++module_exit(fini);
projects / openwrt.git / commitdiff