--- /dev/null
+diff -Nurb linux-2.6.22-510/include/linux/netfilter/xt_MARK.h linux-2.6.22-520/include/linux/netfilter/xt_MARK.h
+--- linux-2.6.22-510/include/linux/netfilter/xt_MARK.h 2007-07-08 19:32:17.000000000 -0400
++++ linux-2.6.22-520/include/linux/netfilter/xt_MARK.h 2008-06-06 17:07:56.000000000 -0400
+@@ -11,6 +11,7 @@
+ XT_MARK_SET=0,
+ XT_MARK_AND,
+ XT_MARK_OR,
++ XT_MARK_COPYXID,
+ };
+
+ struct xt_mark_target_info_v1 {
+diff -Nurb linux-2.6.22-510/include/linux/netfilter/xt_SETXID.h linux-2.6.22-520/include/linux/netfilter/xt_SETXID.h
+--- linux-2.6.22-510/include/linux/netfilter/xt_SETXID.h 1969-12-31 19:00:00.000000000 -0500
++++ linux-2.6.22-520/include/linux/netfilter/xt_SETXID.h 2008-06-06 17:07:56.000000000 -0400
+@@ -0,0 +1,14 @@
++#ifndef _XT_SETXID_H_target
++#define _XT_SETXID_H_target
++
++/* Version 1 */
++enum {
++ XT_SET_PACKET_XID=0
++};
++
++struct xt_setxid_target_info_v1 {
++ unsigned long mark;
++ u_int8_t mode;
++};
++
++#endif /*_XT_SETXID_H_target*/
+diff -Nurb linux-2.6.22-510/include/linux/netfilter_ipv4/ipt_MARK.h linux-2.6.22-520/include/linux/netfilter_ipv4/ipt_MARK.h
+--- linux-2.6.22-510/include/linux/netfilter_ipv4/ipt_MARK.h 2007-07-08 19:32:17.000000000 -0400
++++ linux-2.6.22-520/include/linux/netfilter_ipv4/ipt_MARK.h 2008-06-06 17:07:56.000000000 -0400
+@@ -12,6 +12,7 @@
+ #define IPT_MARK_SET XT_MARK_SET
+ #define IPT_MARK_AND XT_MARK_AND
+ #define IPT_MARK_OR XT_MARK_OR
++#define IPT_MARK_COPYXID XT_MARK_COPYXID
+
+ #define ipt_mark_target_info_v1 xt_mark_target_info_v1
+
+diff -Nurb linux-2.6.22-510/include/linux/netfilter_ipv4/ipt_SETXID.h linux-2.6.22-520/include/linux/netfilter_ipv4/ipt_SETXID.h
+--- linux-2.6.22-510/include/linux/netfilter_ipv4/ipt_SETXID.h 1969-12-31 19:00:00.000000000 -0500
++++ linux-2.6.22-520/include/linux/netfilter_ipv4/ipt_SETXID.h 2008-06-06 17:07:56.000000000 -0400
+@@ -0,0 +1,13 @@
++#ifndef _IPT_SETXID_H_target
++#define _IPT_SETXID_H_target
++
++/* Backwards compatibility for old userspace */
++
++#include <linux/netfilter/xt_SETXID.h>
++
++/* Version 1 */
++#define IPT_SET_PACKET_XID XT_SET_PACKET_XID
++
++#define ipt_setxid_target_info_v1 xt_setxid_target_info_v1
++
++#endif /*_IPT_SETXID_H_target*/
+diff -Nurb linux-2.6.22-510/include/net/netfilter/nf_conntrack.h linux-2.6.22-520/include/net/netfilter/nf_conntrack.h
+--- linux-2.6.22-510/include/net/netfilter/nf_conntrack.h 2007-07-08 19:32:17.000000000 -0400
++++ linux-2.6.22-520/include/net/netfilter/nf_conntrack.h 2008-06-06 17:07:56.000000000 -0400
+@@ -131,6 +131,9 @@
+ /* Storage reserved for other modules: */
+ union nf_conntrack_proto proto;
+
++ /* PLANETLAB. VNET-specific */
++ int xid[IP_CT_DIR_MAX];
++
+ /* features dynamically at the end: helper, nat (both optional) */
+ char data[0];
+ };
+diff -Nurb linux-2.6.22-510/net/netfilter/Kconfig linux-2.6.22-520/net/netfilter/Kconfig
+--- linux-2.6.22-510/net/netfilter/Kconfig 2007-07-08 19:32:17.000000000 -0400
++++ linux-2.6.22-520/net/netfilter/Kconfig 2008-06-06 17:07:56.000000000 -0400
+@@ -389,6 +389,13 @@
+
+ To compile it as a module, choose M here. If unsure, say N.
+
++config NETFILTER_XT_TARGET_SETXID
++ tristate '"SETXID" target support'
++ depends on NETFILTER_XTABLES
++ help
++ This option adds a `SETXID' target, which allows you to alter the
++ xid of a socket.
++
+ config NETFILTER_XT_MATCH_COMMENT
+ tristate '"comment" match support'
+ depends on NETFILTER_XTABLES
+diff -Nurb linux-2.6.22-510/net/netfilter/Makefile linux-2.6.22-520/net/netfilter/Makefile
+--- linux-2.6.22-510/net/netfilter/Makefile 2007-07-08 19:32:17.000000000 -0400
++++ linux-2.6.22-520/net/netfilter/Makefile 2008-06-06 17:07:56.000000000 -0400
+@@ -37,6 +37,7 @@
+ obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o
+
+ # targets
++obj-$(CONFIG_NETFILTER_XT_TARGET_SETXID) += xt_SETXID.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CLASSIFY) += xt_CLASSIFY.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNMARK) += xt_CONNMARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o
+diff -Nurb linux-2.6.22-510/net/netfilter/nf_conntrack_core.c linux-2.6.22-520/net/netfilter/nf_conntrack_core.c
+--- linux-2.6.22-510/net/netfilter/nf_conntrack_core.c 2007-07-08 19:32:17.000000000 -0400
++++ linux-2.6.22-520/net/netfilter/nf_conntrack_core.c 2008-06-06 17:07:56.000000000 -0400
+@@ -726,6 +726,8 @@
+
+ /* Overload tuple linked list to put us in unconfirmed list. */
+ list_add(&conntrack->tuplehash[IP_CT_DIR_ORIGINAL].list, &unconfirmed);
++ conntrack->xid[IP_CT_DIR_ORIGINAL] = -1;
++ conntrack->xid[IP_CT_DIR_REPLY] = -1;
+
+ write_unlock_bh(&nf_conntrack_lock);
+
+diff -Nurb linux-2.6.22-510/net/netfilter/xt_MARK.c linux-2.6.22-520/net/netfilter/xt_MARK.c
+--- linux-2.6.22-510/net/netfilter/xt_MARK.c 2007-07-08 19:32:17.000000000 -0400
++++ linux-2.6.22-520/net/netfilter/xt_MARK.c 2008-06-07 17:55:26.000000000 -0400
+@@ -5,13 +5,18 @@
+ * 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/version.h>
+ #include <linux/skbuff.h>
+ #include <linux/ip.h>
+ #include <net/checksum.h>
++#include <net/route.h>
++#include <net/inet_hashtables.h>
+
++#include <net/netfilter/nf_conntrack.h>
+ #include <linux/netfilter/x_tables.h>
+ #include <linux/netfilter/xt_MARK.h>
+
+@@ -21,6 +26,48 @@
+ MODULE_ALIAS("ipt_MARK");
+ MODULE_ALIAS("ip6t_MARK");
+
++static inline u_int16_t
++get_dst_port(struct nf_conntrack_tuple *tuple)
++{
++ switch (tuple->dst.protonum) {
++ case IPPROTO_GRE:
++ /* XXX Truncate 32-bit GRE key to 16 bits */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,11)
++ return tuple->dst.u.gre.key;
++#else
++ return htons(ntohl(tuple->dst.u.gre.key));
++#endif
++ case IPPROTO_ICMP:
++ /* Bind on ICMP echo ID */
++ return tuple->src.u.icmp.id;
++ case IPPROTO_TCP:
++ return tuple->dst.u.tcp.port;
++ case IPPROTO_UDP:
++ return tuple->dst.u.udp.port;
++ default:
++ return tuple->dst.u.all;
++ }
++}
++
++static inline u_int16_t
++get_src_port(struct nf_conntrack_tuple *tuple)
++{
++ switch (tuple->dst.protonum) {
++ case IPPROTO_GRE:
++ /* XXX Truncate 32-bit GRE key to 16 bits */
++ return htons(ntohl(tuple->src.u.gre.key));
++ case IPPROTO_ICMP:
++ /* Bind on ICMP echo ID */
++ return tuple->src.u.icmp.id;
++ case IPPROTO_TCP:
++ return tuple->src.u.tcp.port;
++ case IPPROTO_UDP:
++ return tuple->src.u.udp.port;
++ default:
++ return tuple->src.u.all;
++ }
++}
++
+ static unsigned int
+ target_v0(struct sk_buff **pskb,
+ const struct net_device *in,
+@@ -35,6 +82,8 @@
+ return XT_CONTINUE;
+ }
+
++extern DEFINE_PER_CPU(int, sknid_elevator);
++
+ static unsigned int
+ target_v1(struct sk_buff **pskb,
+ const struct net_device *in,
+@@ -44,7 +93,20 @@
+ const void *targinfo)
+ {
+ const struct xt_mark_target_info_v1 *markinfo = targinfo;
+- int mark = 0;
++ enum ip_conntrack_info ctinfo;
++ struct sock *connection_sk;
++ int dif;
++ struct nf_conn *ct;
++ extern struct inet_hashinfo tcp_hashinfo;
++ enum ip_conntrack_dir dir;
++ int *curtag;
++ u_int32_t src_ip;
++ u_int32_t dst_ip;
++ u_int16_t proto, src_port;
++ u_int32_t ip;
++ u_int16_t port;
++
++ int mark = -1;
+
+ switch (markinfo->mode) {
+ case XT_MARK_SET:
+@@ -58,13 +120,74 @@
+ case XT_MARK_OR:
+ mark = (*pskb)->mark | markinfo->mark;
+ break;
++
++ case XT_MARK_COPYXID:
++
++ ct = nf_ct_get((*pskb), &ctinfo);
++ if (!ct)
++ break;
++
++ dir = CTINFO2DIR(ctinfo);
++ src_ip = ct->tuplehash[dir].tuple.src.u3.ip;
++ dst_ip = ct->tuplehash[dir].tuple.dst.u3.ip;
++ src_port = get_src_port(&ct->tuplehash[dir].tuple);
++ proto = ct->tuplehash[dir].tuple.dst.protonum;
++
++ dif = ((struct rtable *)(*pskb)->dst)->rt_iif;
++ ip = ct->tuplehash[dir].tuple.dst.u3.ip;
++ port = get_dst_port(&ct->tuplehash[dir].tuple);
++
++ if (proto == 1 || proto == 17) {
++ if ((*pskb)->mark>0) /* The packet is marked, it's going out */
++ {
++ //if (ct->xid[0]>0 && ct->xid[0]!=(*pskb)->mark)
++ /*printk(KERN_CRIT "xt_MARK log: %d/%d/%d/%d\n",ct->xid[0],(*pskb)->mark,hooknum==NF_IP_LOCAL_IN,proto);*/
++
++ ct->xid[0]=(*pskb)->mark;
+ }
+
++ if (ct->xid[0] > 0) {
++ mark = ct->xid[0];
++ }
++
++ }
++ else if (proto == 6) {
++ if ((*pskb)->sk) {
++ connection_sk = (*pskb)->sk;
++ sock_hold(connection_sk);
++ }
++ else
++ connection_sk = inet_lookup_established(&tcp_hashinfo, src_ip, src_port, ip, port, dif);
++
++
++ if (connection_sk) {
++ if (connection_sk->sk_state == TCP_TIME_WAIT) {
++ inet_twsk_put(inet_twsk(connection_sk));
++ break;
++ }
++ connection_sk->sk_peercred.gid = connection_sk->sk_peercred.uid = ct->xid[dir];
++ ct->xid[!dir]=connection_sk->sk_nid;
++ if (connection_sk->sk_nid != 0)
++ mark = connection_sk->sk_nid;
++ sock_put(connection_sk);
++ }
++ else
++ mark = -1 ;
++ }
++ break;
++ }
++ if (mark != -1) {
+ (*pskb)->mark = mark;
++ }
++
++ curtag=&__get_cpu_var(sknid_elevator);
++ if (mark > 0 && *curtag==-2)
++ {
++ *curtag = mark;
++ }
+ return XT_CONTINUE;
+ }
+
+-
+ static int
+ checkentry_v0(const char *tablename,
+ const void *entry,
+@@ -92,7 +215,8 @@
+
+ if (markinfo->mode != XT_MARK_SET
+ && markinfo->mode != XT_MARK_AND
+- && markinfo->mode != XT_MARK_OR) {
++ && markinfo->mode != XT_MARK_OR
++ && markinfo->mode != XT_MARK_COPYXID) {
+ printk(KERN_WARNING "MARK: unknown mode %u\n",
+ markinfo->mode);
+ return 0;
+diff -Nurb linux-2.6.22-510/net/netfilter/xt_SETXID.c linux-2.6.22-520/net/netfilter/xt_SETXID.c
+--- linux-2.6.22-510/net/netfilter/xt_SETXID.c 1969-12-31 19:00:00.000000000 -0500
++++ linux-2.6.22-520/net/netfilter/xt_SETXID.c 2008-06-06 17:07:56.000000000 -0400
+@@ -0,0 +1,79 @@
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/ip.h>
++#include <net/checksum.h>
++#include <linux/vs_network.h>
++
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_SETXID.h>
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("");
++MODULE_DESCRIPTION("");
++MODULE_ALIAS("ipt_SETXID");
++
++static unsigned int
++target_v1(struct sk_buff **pskb,
++ const struct net_device *in,
++ const struct net_device *out,
++ unsigned int hooknum,
++ const struct xt_target *target,
++ const void *targinfo)
++{
++ const struct xt_setxid_target_info_v1 *setxidinfo = targinfo;
++
++ switch (setxidinfo->mode) {
++ case XT_SET_PACKET_XID:
++ (*pskb)->skb_tag = setxidinfo->mark;
++ break;
++ }
++ return XT_CONTINUE;
++}
++
++
++static int
++checkentry_v1(const char *tablename,
++ const void *entry,
++ const struct xt_target *target,
++ void *targinfo,
++ unsigned int hook_mask)
++{
++ struct xt_setxid_target_info_v1 *setxidinfo = targinfo;
++
++ if (setxidinfo->mode != XT_SET_PACKET_XID) {
++ printk(KERN_WARNING "SETXID: unknown mode %u\n",
++ setxidinfo->mode);
++ return 0;
++ }
++
++ return 1;
++}
++
++static struct xt_target xt_setxid_target[] = {
++ {
++ .name = "SETXID",
++ .family = AF_INET,
++ .revision = 1,
++ .checkentry = checkentry_v1,
++ .target = target_v1,
++ .targetsize = sizeof(struct xt_setxid_target_info_v1),
++ .table = "mangle",
++ .me = THIS_MODULE,
++ }
++};
++
++static int __init init(void)
++{
++ int err;
++
++ err = xt_register_targets(xt_setxid_target, ARRAY_SIZE(xt_setxid_target));
++ return err;
++}
++
++static void __exit fini(void)
++{
++ xt_unregister_targets(xt_setxid_target, ARRAY_SIZE(xt_setxid_target));
++}
++
++module_init(init);
++module_exit(fini);
+
git://git.onelab.eu / linux-2.6.git / blobdiff