return -EPERM;
if (sock->type != SOCK_DGRAM && sock->type != SOCK_RAW &&
sock->type != SOCK_PACKET)
-diff -Nurb linux-2.6.22-510/xt_MARK.c linux-2.6.22-520/xt_MARK.c
---- linux-2.6.22-510/xt_MARK.c 1969-12-31 19:00:00.000000000 -0500
-+++ linux-2.6.22-520/xt_MARK.c 2008-05-05 00:06:39.000000000 -0400
-@@ -0,0 +1,287 @@
-+/* This is a module which is used for setting the NFMARK field of an skb. */
-+
-+/* (C) 1999-2001 Marc Boucher <marc@mbsi.ca>
-+ *
-+ * 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>
-+
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");
-+MODULE_DESCRIPTION("ip[6]tables MARK modification module");
-+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,
-+ const struct net_device *out,
-+ unsigned int hooknum,
-+ const struct xt_target *target,
-+ const void *targinfo)
-+{
-+ const struct xt_mark_target_info *markinfo = targinfo;
-+
-+ (*pskb)->mark = markinfo->mark;
-+ return XT_CONTINUE;
-+}
-+
-+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_mark_target_info_v1 *markinfo = targinfo;
-+ int mark = -1;
-+
-+ switch (markinfo->mode) {
-+ case XT_MARK_SET:
-+ mark = markinfo->mark;
-+ break;
-+
-+ case XT_MARK_AND:
-+ mark = (*pskb)->mark & markinfo->mark;
-+ break;
-+
-+ case XT_MARK_OR:
-+ mark = (*pskb)->mark | markinfo->mark;
-+ break;
-+
-+ case XT_MARK_COPYXID: {
-+ enum ip_conntrack_info ctinfo;
-+ struct sock *connection_sk;
-+ int dif;
-+
-+ struct nf_conn *ct = nf_ct_get((*pskb), &ctinfo);
-+ extern struct inet_hashinfo tcp_hashinfo;
-+ enum ip_conntrack_dir dir;
-+ if (!ct)
-+ break;
-+
-+ dir = CTINFO2DIR(ctinfo);
-+ u_int32_t src_ip = ct->tuplehash[dir].tuple.src.u3.ip;
-+ u_int16_t src_port = get_src_port(&ct->tuplehash[dir].tuple);
-+ u_int16_t proto = ct->tuplehash[dir].tuple.dst.protonum;
-+
-+ u_int32_t ip;
-+ u_int16_t port;
-+
-+ 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!=-1) && (*pskb)->mark)
-+ ct->xid[0]=(*pskb)->mark;
-+ if (ct->xid[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(&tcp_hashinfo, src_ip, src_port, ip, port, dif);
-+ }
-+
-+ if (connection_sk) {
-+ connection_sk->sk_peercred.gid = connection_sk->sk_peercred.uid = ct->xid[dir];
-+ ct->xid[!dir]=connection_sk->sk_xid;
-+ if (connection_sk->sk_xid != 0)
-+ mark = connection_sk->sk_xid;
-+ if (connection_sk->sk_state == TCP_TIME_WAIT)
-+ inet_twsk_put(inet_twsk(connection_sk));
-+ else
-+ sock_put(connection_sk);
-+ }
-+ }
-+ break;
-+ }
-+ }
-+
-+ if (mark != -1)
-+ (*pskb)->mark = mark;
-+ return XT_CONTINUE;
-+}
-+
-+
-+static int
-+checkentry_v0(const char *tablename,
-+ const void *entry,
-+ const struct xt_target *target,
-+ void *targinfo,
-+ unsigned int hook_mask)
-+{
-+ struct xt_mark_target_info *markinfo = targinfo;
-+
-+ if (markinfo->mark > 0xffffffff) {
-+ printk(KERN_WARNING "MARK: Only supports 32bit wide mark\n");
-+ return 0;
-+ }
-+ return 1;
-+}
-+
-+static int
-+checkentry_v1(const char *tablename,
-+ const void *entry,
-+ const struct xt_target *target,
-+ void *targinfo,
-+ unsigned int hook_mask)
-+{
-+ struct xt_mark_target_info_v1 *markinfo = targinfo;
-+
-+ if (markinfo->mode != XT_MARK_SET
-+ && markinfo->mode != XT_MARK_AND
-+ && markinfo->mode != XT_MARK_OR
-+ && markinfo->mode != XT_MARK_COPYXID) {
-+ printk(KERN_WARNING "MARK: unknown mode %u\n",
-+ markinfo->mode);
-+ return 0;
-+ }
-+ if (markinfo->mark > 0xffffffff) {
-+ printk(KERN_WARNING "MARK: Only supports 32bit wide mark\n");
-+ return 0;
-+ }
-+ return 1;
-+}
-+
-+#ifdef CONFIG_COMPAT
-+struct compat_xt_mark_target_info_v1 {
-+ compat_ulong_t mark;
-+ u_int8_t mode;
-+ u_int8_t __pad1;
-+ u_int16_t __pad2;
-+};
-+
-+static void compat_from_user_v1(void *dst, void *src)
-+{
-+ struct compat_xt_mark_target_info_v1 *cm = src;
-+ struct xt_mark_target_info_v1 m = {
-+ .mark = cm->mark,
-+ .mode = cm->mode,
-+ };
-+ memcpy(dst, &m, sizeof(m));
-+}
-+
-+static int compat_to_user_v1(void __user *dst, void *src)
-+{
-+ struct xt_mark_target_info_v1 *m = src;
-+ struct compat_xt_mark_target_info_v1 cm = {
-+ .mark = m->mark,
-+ .mode = m->mode,
-+ };
-+ return copy_to_user(dst, &cm, sizeof(cm)) ? -EFAULT : 0;
-+}
-+#endif /* CONFIG_COMPAT */
-+
-+static struct xt_target xt_mark_target[] = {
-+ {
-+ .name = "MARK",
-+ .family = AF_INET,
-+ .revision = 0,
-+ .checkentry = checkentry_v0,
-+ .target = target_v0,
-+ .targetsize = sizeof(struct xt_mark_target_info),
-+ .table = "mangle",
-+ .me = THIS_MODULE,
-+ },
-+ {
-+ .name = "MARK",
-+ .family = AF_INET,
-+ .revision = 1,
-+ .checkentry = checkentry_v1,
-+ .target = target_v1,
-+ .targetsize = sizeof(struct xt_mark_target_info_v1),
-+#ifdef CONFIG_COMPAT
-+ .compatsize = sizeof(struct compat_xt_mark_target_info_v1),
-+ .compat_from_user = compat_from_user_v1,
-+ .compat_to_user = compat_to_user_v1,
-+#endif
-+ .table = "mangle",
-+ .me = THIS_MODULE,
-+ },
-+ {
-+ .name = "MARK",
-+ .family = AF_INET6,
-+ .revision = 0,
-+ .checkentry = checkentry_v0,
-+ .target = target_v0,
-+ .targetsize = sizeof(struct xt_mark_target_info),
-+ .table = "mangle",
-+ .me = THIS_MODULE,
-+ },
-+};
-+
-+static int __init xt_mark_init(void)
-+{
-+ return xt_register_targets(xt_mark_target, ARRAY_SIZE(xt_mark_target));
-+}
-+
-+static void __exit xt_mark_fini(void)
-+{
-+ xt_unregister_targets(xt_mark_target, ARRAY_SIZE(xt_mark_target));
-+}
-+
-+module_init(xt_mark_init);
-+module_exit(xt_mark_fini);
git://git.onelab.eu / linux-2.6.git / commitdiff