Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (183 commits)
  [TG3]: Update version to 3.78.
  [TG3]: Add missing NVRAM strapping.
  [TG3]: Enable auto MDI.
  [TG3]: Fix the polarity bit.
  [TG3]: Fix irq_sync race condition.
  [NET_SCHED]: ematch: module autoloading
  [TCP]: tcp probe wraparound handling and other changes
  [RTNETLINK]: rtnl_link: allow specifying initial device address
  [RTNETLINK]: rtnl_link API simplification
  [VLAN]: Fix MAC address handling
  [ETH]: Validate address in eth_mac_addr
  [NET]: Fix races in net_rx_action vs netpoll.
  [AF_UNIX]: Rewrite garbage collector, fixes race.
  [NETFILTER]: {ip, nf}_conntrack_sctp: fix remotely triggerable NULL ptr dereference (CVE-2007-2876)
  [NET]: Make all initialized struct seq_operations const.
  [UDP]: Fix length check.
  [IPV6]: Remove unneeded pointer idev from addrconf_cleanup().
  [DECNET]: Another unnecessary net/tcp.h inclusion in net/dn.h
  [IPV6]: Make IPV6_{RECV,2292}RTHDR boolean options.
  [IPV6]: Do not send RH0 anymore.
  ...

Fixed up trivial conflict in Documentation/feature-removal-schedule.txt
manually.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

25 files changed, 496 insertions, 103 deletions

diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index afae306b177..127d2d192b5 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -91,7 +91,6 @@ header-y += in6.h
 header-y += in_route.h
 header-y += ioctl.h
 header-y += ipmi_msgdefs.h
-header-y += ip_mp_alg.h
 header-y += ipsec.h
 header-y += ipx.h
 header-y += irda.h
@@ -226,6 +225,7 @@ unifdef-y += if_fddi.h
 unifdef-y += if_frad.h
 unifdef-y += if_ltalk.h
 unifdef-y += if_link.h
+unifdef-y += if_pppol2tp.h
 unifdef-y += if_pppox.h
 unifdef-y += if_shaper.h
 unifdef-y += if_tr.h
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 071c67abed8..6cdb97365e4 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -39,13 +39,8 @@ extern void		eth_header_cache_update(struct hh_cache *hh, struct net_device *dev
 extern int		eth_header_cache(struct neighbour *neigh,
 					 struct hh_cache *hh);
 
-extern struct net_device *alloc_etherdev(int sizeof_priv);
-static inline void eth_copy_and_sum (struct sk_buff *dest, 
-				     const unsigned char *src, 
-				     int len, int base)
-{
-	memcpy (dest->data, src, len);
-}
+extern struct net_device *alloc_etherdev_mq(int sizeof_priv, unsigned int queue_count);
+#define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1)
 
 /**
  * is_zero_ether_addr - Determine if give Ethernet address is all zeros.
diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index 604c2434f71..422084d18ce 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -76,6 +76,8 @@ enum
 #define IFLA_WEIGHT IFLA_WEIGHT
 	IFLA_OPERSTATE,
 	IFLA_LINKMODE,
+	IFLA_LINKINFO,
+#define IFLA_LINKINFO IFLA_LINKINFO
 	__IFLA_MAX
 };
 
@@ -140,4 +142,49 @@ struct ifla_cacheinfo
 	__u32	retrans_time;
 };
 
+enum
+{
+	IFLA_INFO_UNSPEC,
+	IFLA_INFO_KIND,
+	IFLA_INFO_DATA,
+	IFLA_INFO_XSTATS,
+	__IFLA_INFO_MAX,
+};
+
+#define IFLA_INFO_MAX	(__IFLA_INFO_MAX - 1)
+
+/* VLAN section */
+
+enum
+{
+	IFLA_VLAN_UNSPEC,
+	IFLA_VLAN_ID,
+	IFLA_VLAN_FLAGS,
+	IFLA_VLAN_EGRESS_QOS,
+	IFLA_VLAN_INGRESS_QOS,
+	__IFLA_VLAN_MAX,
+};
+
+#define IFLA_VLAN_MAX	(__IFLA_VLAN_MAX - 1)
+
+struct ifla_vlan_flags {
+	__u32	flags;
+	__u32	mask;
+};
+
+enum
+{
+	IFLA_VLAN_QOS_UNSPEC,
+	IFLA_VLAN_QOS_MAPPING,
+	__IFLA_VLAN_QOS_MAX
+};
+
+#define IFLA_VLAN_QOS_MAX	(__IFLA_VLAN_QOS_MAX - 1)
+
+struct ifla_vlan_qos_mapping
+{
+	__u32 from;
+	__u32 to;
+};
+
 #endif /* _LINUX_IF_LINK_H */
diff --git a/include/linux/if_ppp.h b/include/linux/if_ppp.h
index 768372f07ca..0f2f70d4e48 100644
--- a/include/linux/if_ppp.h
+++ b/include/linux/if_ppp.h
@@ -110,6 +110,21 @@ struct ifpppcstatsreq {
 	struct ppp_comp_stats stats;
 };
 
+/* For PPPIOCGL2TPSTATS */
+struct pppol2tp_ioc_stats {
+	__u16		tunnel_id;	/* redundant */
+	__u16		session_id;	/* if zero, get tunnel stats */
+	__u32		using_ipsec:1;	/* valid only for session_id == 0 */
+	aligned_u64	tx_packets;
+	aligned_u64	tx_bytes;
+	aligned_u64	tx_errors;
+	aligned_u64	rx_packets;
+	aligned_u64	rx_bytes;
+	aligned_u64	rx_seq_discards;
+	aligned_u64	rx_oos_packets;
+	aligned_u64	rx_errors;
+};
+
 #define ifr__name       b.ifr_ifrn.ifrn_name
 #define stats_ptr       b.ifr_ifru.ifru_data
 
@@ -146,6 +161,7 @@ struct ifpppcstatsreq {
 #define PPPIOCDISCONN	_IO('t', 57)		/* disconnect channel */
 #define PPPIOCATTCHAN	_IOW('t', 56, int)	/* attach to ppp channel */
 #define PPPIOCGCHAN	_IOR('t', 55, int)	/* get ppp channel number */
+#define PPPIOCGL2TPSTATS _IOR('t', 54, struct pppol2tp_ioc_stats)
 
 #define SIOCGPPPSTATS   (SIOCDEVPRIVATE + 0)
 #define SIOCGPPPVER     (SIOCDEVPRIVATE + 1)	/* NEVER change this!! */
diff --git a/include/linux/if_pppol2tp.h b/include/linux/if_pppol2tp.h
new file mode 100644
index 00000000000..516203b6fde
--- /dev/null
+++ b/include/linux/if_pppol2tp.h
@@ -0,0 +1,69 @@
+/***************************************************************************
+ * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661)
+ *
+ * This file supplies definitions required by the PPP over L2TP driver
+ * (pppol2tp.c).  All version information wrt this file is located in pppol2tp.c
+ *
+ * License:
+ *		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.
+ *
+ */
+
+#ifndef __LINUX_IF_PPPOL2TP_H
+#define __LINUX_IF_PPPOL2TP_H
+
+#include <asm/types.h>
+
+#ifdef __KERNEL__
+#include <linux/in.h>
+#endif
+
+/* Structure used to connect() the socket to a particular tunnel UDP
+ * socket.
+ */
+struct pppol2tp_addr
+{
+	pid_t	pid;			/* pid that owns the fd.
+					 * 0 => current */
+	int	fd;			/* FD of UDP socket to use */
+
+	struct sockaddr_in addr;	/* IP address and port to send to */
+
+	__be16 s_tunnel, s_session;	/* For matching incoming packets */
+	__be16 d_tunnel, d_session;	/* For sending outgoing packets */
+};
+
+/* Socket options:
+ * DEBUG	- bitmask of debug message categories
+ * SENDSEQ	- 0 => don't send packets with sequence numbers
+ *		  1 => send packets with sequence numbers
+ * RECVSEQ	- 0 => receive packet sequence numbers are optional
+ *		  1 => drop receive packets without sequence numbers
+ * LNSMODE	- 0 => act as LAC.
+ *		  1 => act as LNS.
+ * REORDERTO	- reorder timeout (in millisecs). If 0, don't try to reorder.
+ */
+enum {
+	PPPOL2TP_SO_DEBUG	= 1,
+	PPPOL2TP_SO_RECVSEQ	= 2,
+	PPPOL2TP_SO_SENDSEQ	= 3,
+	PPPOL2TP_SO_LNSMODE	= 4,
+	PPPOL2TP_SO_REORDERTO	= 5,
+};
+
+/* Debug message categories for the DEBUG socket option */
+enum {
+	PPPOL2TP_MSG_DEBUG	= (1 << 0),	/* verbose debug (if
+						 * compiled in) */
+	PPPOL2TP_MSG_CONTROL	= (1 << 1),	/* userspace - kernel
+						 * interface */
+	PPPOL2TP_MSG_SEQ	= (1 << 2),	/* sequence numbers */
+	PPPOL2TP_MSG_DATA	= (1 << 3),	/* data packets */
+};
+
+
+
+#endif
diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h
index 6f987be60fe..25652545ba6 100644
--- a/include/linux/if_pppox.h
+++ b/include/linux/if_pppox.h
@@ -27,6 +27,7 @@
 #include <asm/semaphore.h>
 #include <linux/ppp_channel.h>
 #endif /* __KERNEL__ */
+#include <linux/if_pppol2tp.h>
 
 /* For user-space programs to pick up these definitions
  * which they wouldn't get otherwise without defining __KERNEL__
@@ -50,8 +51,9 @@ struct pppoe_addr{
  * Protocols supported by AF_PPPOX 
  */ 
 #define PX_PROTO_OE    0 /* Currently just PPPoE */
-#define PX_MAX_PROTO   1	
- 
+#define PX_PROTO_OL2TP 1 /* Now L2TP also */
+#define PX_MAX_PROTO   2
+
 struct sockaddr_pppox { 
        sa_family_t     sa_family;            /* address family, AF_PPPOX */ 
        unsigned int    sa_protocol;          /* protocol identifier */ 
@@ -60,6 +62,16 @@ struct sockaddr_pppox {
        }sa_addr; 
 }__attribute__ ((packed)); 
 
+/* The use of the above union isn't viable because the size of this
+ * struct must stay fixed over time -- applications use sizeof(struct
+ * sockaddr_pppox) to fill it. We use a protocol specific sockaddr
+ * type instead.
+ */
+struct sockaddr_pppol2tp {
+	sa_family_t     sa_family;      /* address family, AF_PPPOX */
+	unsigned int    sa_protocol;    /* protocol identifier */
+	struct pppol2tp_addr pppol2tp;
+}__attribute__ ((packed));
 
 /*********************************************************************
  *
diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h
index 88aef7b86ef..42eb6945b93 100644
--- a/include/linux/if_tun.h
+++ b/include/linux/if_tun.h
@@ -36,6 +36,7 @@ struct tun_struct {
 	unsigned long 		flags;
 	int			attached;
 	uid_t			owner;
+	gid_t			group;
 
 	wait_queue_head_t	read_wait;
 	struct sk_buff_head	readq;
@@ -78,6 +79,7 @@ struct tun_struct {
 #define TUNSETPERSIST _IOW('T', 203, int) 
 #define TUNSETOWNER   _IOW('T', 204, int)
 #define TUNSETLINK    _IOW('T', 205, int)
+#define TUNSETGROUP   _IOW('T', 206, int)
 
 /* TUNSETIFF ifr flags */
 #define IFF_TUN		0x0001
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 81e9bc93569..61a57dc2ac9 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -99,7 +99,7 @@ static inline void vlan_group_set_device(struct vlan_group *vg, int vlan_id,
 }
 
 struct vlan_priority_tci_mapping {
-	unsigned long priority;
+	u32 priority;
 	unsigned short vlan_qos; /* This should be shifted when first set, so we only do it
 				  * at provisioning time.
 				  * ((skb->priority << 13) & 0xE000)
@@ -112,7 +112,10 @@ struct vlan_dev_info {
 	/** This will be the mapping that correlates skb->priority to
 	 * 3 bits of VLAN QOS tags...
 	 */
-	unsigned long ingress_priority_map[8];
+	unsigned int nr_ingress_mappings;
+	u32 ingress_priority_map[8];
+
+	unsigned int nr_egress_mappings;
 	struct vlan_priority_tci_mapping *egress_priority_map[16]; /* hash table */
 
 	unsigned short vlan_id;        /*  The VLAN Identifier for this interface. */
@@ -132,6 +135,7 @@ struct vlan_dev_info {
 	int old_allmulti;               /* similar to above. */
 	int old_promiscuity;            /* similar to above. */
 	struct net_device *real_dev;    /* the underlying device/interface */
+	unsigned char real_dev_addr[ETH_ALEN];
 	struct proc_dir_entry *dent;    /* Holds the proc data */
 	unsigned long cnt_inc_headroom_on_tx; /* How many times did we have to grow the skb on TX. */
 	unsigned long cnt_encap_on_xmit;      /* How many times did we have to encapsulate the skb on TX. */
@@ -395,6 +399,10 @@ enum vlan_ioctl_cmds {
 	GET_VLAN_VID_CMD /* Get the VID of this VLAN (specified by name) */
 };
 
+enum vlan_flags {
+	VLAN_FLAG_REORDER_HDR	= 0x1,
+};
+
 enum vlan_name_types {
 	VLAN_NAME_TYPE_PLUS_VID, /* Name will look like:  vlan0005 */
 	VLAN_NAME_TYPE_RAW_PLUS_VID, /* name will look like:  eth1.0005 */
diff --git a/include/linux/ip_mp_alg.h b/include/linux/ip_mp_alg.h
deleted file mode 100644
index e234e2008f5..00000000000
--- a/include/linux/ip_mp_alg.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* ip_mp_alg.h: IPV4 multipath algorithm support, user-visible values.
- *
- * Copyright (C) 2004, 2005 Einar Lueck <elueck@de.ibm.com>
- * Copyright (C) 2005 David S. Miller <davem@davemloft.net>
- */
-
-#ifndef _LINUX_IP_MP_ALG_H
-#define _LINUX_IP_MP_ALG_H
-
-enum ip_mp_alg {
-	IP_MP_ALG_NONE,
-	IP_MP_ALG_RR,
-	IP_MP_ALG_DRR,
-	IP_MP_ALG_RANDOM,
-	IP_MP_ALG_WRANDOM,
-	__IP_MP_ALG_MAX
-};
-
-#define IP_MP_ALG_MAX (__IP_MP_ALG_MAX - 1)
-
-#endif /* _LINUX_IP_MP_ALG_H */
-
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 648bd1f0912..97983dc9df1 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -27,8 +27,8 @@ struct in6_ifreq {
 	int		ifr6_ifindex; 
 };
 
-#define IPV6_SRCRT_STRICT	0x01	/* this hop must be a neighbor	*/
-#define IPV6_SRCRT_TYPE_0	0	/* IPv6 type 0 Routing Header	*/
+#define IPV6_SRCRT_STRICT	0x01	/* Deprecated; will be removed */
+#define IPV6_SRCRT_TYPE_0	0	/* Deprecated; will be removed */
 #define IPV6_SRCRT_TYPE_2	2	/* IPv6 type 2 Routing Header	*/
 
 /*
@@ -247,7 +247,7 @@ struct inet6_skb_parm {
 	__u16			lastopt;
 	__u32			nhoff;
 	__u16			flags;
-#ifdef CONFIG_IPV6_MIP6
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
 	__u16			dsthao;
 #endif
 
@@ -299,8 +299,8 @@ struct ipv6_pinfo {
 	/* pktoption flags */
 	union {
 		struct {
-			__u16	srcrt:2,
-				osrcrt:2,
+			__u16	srcrt:1,
+				osrcrt:1,
 			        rxinfo:1,
 			        rxoinfo:1,
 				rxhlim:1,
diff --git a/include/linux/irda.h b/include/linux/irda.h
index 945ba311087..8e3735714c1 100644
--- a/include/linux/irda.h
+++ b/include/linux/irda.h
@@ -216,6 +216,34 @@ struct if_irda_req {
 #define ifr_dtr       ifr_ifru.ifru_line.dtr
 #define ifr_rts       ifr_ifru.ifru_line.rts
 
+
+/* IrDA netlink definitions */
+#define IRDA_NL_NAME "irda"
+#define IRDA_NL_VERSION 1
+
+enum irda_nl_commands {
+	IRDA_NL_CMD_UNSPEC,
+	IRDA_NL_CMD_SET_MODE,
+	IRDA_NL_CMD_GET_MODE,
+
+	__IRDA_NL_CMD_AFTER_LAST
+};
+#define IRDA_NL_CMD_MAX (__IRDA_NL_CMD_AFTER_LAST - 1)
+
+enum nl80211_attrs {
+	IRDA_NL_ATTR_UNSPEC,
+	IRDA_NL_ATTR_IFNAME,
+	IRDA_NL_ATTR_MODE,
+
+	__IRDA_NL_ATTR_AFTER_LAST
+};
+#define IRDA_NL_ATTR_MAX (__IRDA_NL_ATTR_AFTER_LAST - 1)
+
+/* IrDA modes */
+#define IRDA_MODE_PRIMARY   0x1
+#define IRDA_MODE_SECONDARY 0x2
+#define IRDA_MODE_MONITOR   0x4
+
 #endif /* KERNEL_IRDA_H */
 
 
diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index 2b139f66027..dae7143644f 100644
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -279,6 +279,16 @@ static inline s64 ktime_to_us(const ktime_t kt)
 	return (s64) tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
 }
 
+static inline s64 ktime_us_delta(const ktime_t later, const ktime_t earlier)
+{
+       return ktime_to_us(ktime_sub(later, earlier));
+}
+
+static inline ktime_t ktime_add_us(const ktime_t kt, const u64 usec)
+{
+	return ktime_add_ns(kt, usec * 1000);
+}
+
 /*
  * The resolution of the clocks. The resolution value is returned in
  * the clock_getres() system call to give application programmers an
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 3a70f553b28..79cc3dab4be 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -108,6 +108,14 @@ struct wireless_dev;
 #define MAX_HEADER (LL_MAX_HEADER + 48)
 #endif
 
+struct net_device_subqueue
+{
+	/* Give a control state for each queue.  This struct may contain
+	 * per-queue locks in the future.
+	 */
+	unsigned long   state;
+};
+
 /*
  *	Network device statistics. Akin to the 2.0 ether stats but
  *	with byte counters.
@@ -177,19 +185,24 @@ struct netif_rx_stats
 
 DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
 
+struct dev_addr_list
+{
+	struct dev_addr_list	*next;
+	u8			da_addr[MAX_ADDR_LEN];
+	u8			da_addrlen;
+	int			da_users;
+	int			da_gusers;
+};
 
 /*
  *	We tag multicasts with these structures.
  */
- 
-struct dev_mc_list
-{	
-	struct dev_mc_list	*next;
-	__u8			dmi_addr[MAX_ADDR_LEN];
-	unsigned char		dmi_addrlen;
-	int			dmi_users;
-	int			dmi_gusers;
-};
+
+#define dev_mc_list	dev_addr_list
+#define dmi_addr	da_addr
+#define dmi_addrlen	da_addrlen
+#define dmi_users	da_users
+#define dmi_gusers	da_gusers
 
 struct hh_cache
 {
@@ -248,6 +261,8 @@ enum netdev_state_t
 	__LINK_STATE_LINKWATCH_PENDING,
 	__LINK_STATE_DORMANT,
 	__LINK_STATE_QDISC_RUNNING,
+	/* Set by the netpoll NAPI code */
+	__LINK_STATE_POLL_LIST_FROZEN,
 };
 
 
@@ -314,9 +329,10 @@ struct net_device
 	/* Net device features */
 	unsigned long		features;
 #define NETIF_F_SG		1	/* Scatter/gather IO. */
-#define NETIF_F_IP_CSUM		2	/* Can checksum only TCP/UDP over IPv4. */
+#define NETIF_F_IP_CSUM		2	/* Can checksum TCP/UDP over IPv4. */
 #define NETIF_F_NO_CSUM		4	/* Does not require checksum. F.e. loopack. */
 #define NETIF_F_HW_CSUM		8	/* Can checksum all the packets. */
+#define NETIF_F_IPV6_CSUM	16	/* Can checksum TCP/UDP over IPV6 */
 #define NETIF_F_HIGHDMA		32	/* Can DMA to high memory. */
 #define NETIF_F_FRAGLIST	64	/* Scatter/gather IO. */
 #define NETIF_F_HW_VLAN_TX	128	/* Transmit VLAN hw acceleration */
@@ -325,6 +341,7 @@ struct net_device
 #define NETIF_F_VLAN_CHALLENGED	1024	/* Device cannot handle VLAN packets */
 #define NETIF_F_GSO		2048	/* Enable software GSO. */
 #define NETIF_F_LLTX		4096	/* LockLess TX */
+#define NETIF_F_MULTI_QUEUE	16384	/* Has multiple TX/RX queues */
 
 	/* Segmentation offload features */
 #define NETIF_F_GSO_SHIFT	16
@@ -338,8 +355,11 @@ struct net_device
 	/* List of features with software fallbacks. */
 #define NETIF_F_GSO_SOFTWARE	(NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
 
+
 #define NETIF_F_GEN_CSUM	(NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
-#define NETIF_F_ALL_CSUM	(NETIF_F_IP_CSUM | NETIF_F_GEN_CSUM)
+#define NETIF_F_V4_CSUM		(NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
+#define NETIF_F_V6_CSUM		(NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
+#define NETIF_F_ALL_CSUM	(NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
 
 	struct net_device	*next_sched;
 
@@ -388,7 +408,10 @@ struct net_device
 	unsigned char		addr_len;	/* hardware address length	*/
 	unsigned short          dev_id;		/* for shared network cards */
 
-	struct dev_mc_list	*mc_list;	/* Multicast mac addresses	*/
+	struct dev_addr_list	*uc_list;	/* Secondary unicast mac addresses */
+	int			uc_count;	/* Number of installed ucasts	*/
+	int			uc_promisc;
+	struct dev_addr_list	*mc_list;	/* Multicast mac addresses	*/
 	int			mc_count;	/* Number of installed mcasts	*/
 	int			promiscuity;
 	int			allmulti;
@@ -493,6 +516,8 @@ struct net_device
 						void *saddr,
 						unsigned len);
 	int			(*rebuild_header)(struct sk_buff *skb);
+#define HAVE_SET_RX_MODE
+	void			(*set_rx_mode)(struct net_device *dev);
 #define HAVE_MULTICAST			 
 	void			(*set_multicast_list)(struct net_device *dev);
 #define HAVE_SET_MAC_ADDR  		 
@@ -540,17 +565,22 @@ struct net_device
 	struct device		dev;
 	/* space for optional statistics and wireless sysfs groups */
 	struct attribute_group  *sysfs_groups[3];
+
+	/* rtnetlink link ops */
+	const struct rtnl_link_ops *rtnl_link_ops;
+
+	/* The TX queue control structures */
+	unsigned int			egress_subqueue_count;
+	struct net_device_subqueue	egress_subqueue[0];
 };
 #define to_net_dev(d) container_of(d, struct net_device, dev)
 
 #define	NETDEV_ALIGN		32
 #define	NETDEV_ALIGN_CONST	(NETDEV_ALIGN - 1)
 
-static inline void *netdev_priv(struct net_device *dev)
+static inline void *netdev_priv(const struct net_device *dev)
 {
-	return (char *)dev + ((sizeof(struct net_device)
-					+ NETDEV_ALIGN_CONST)
-				& ~NETDEV_ALIGN_CONST);
+	return dev->priv;
 }
 
 #define SET_MODULE_OWNER(dev) do { } while (0)
@@ -702,6 +732,62 @@ static inline int netif_running(const struct net_device *dev)
 	return test_bit(__LINK_STATE_START, &dev->state);
 }
 
+/*
+ * Routines to manage the subqueues on a device.  We only need start
+ * stop, and a check if it's stopped.  All other device management is
+ * done at the overall netdevice level.
+ * Also test the device if we're multiqueue.
+ */
+static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+	clear_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
+#endif
+}
+
+static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+#ifdef CONFIG_NETPOLL_TRAP
+	if (netpoll_trap())
+		return;
+#endif
+	set_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
+#endif
+}
+
+static inline int netif_subqueue_stopped(const struct net_device *dev,
+					 u16 queue_index)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+	return test_bit(__LINK_STATE_XOFF,
+			&dev->egress_subqueue[queue_index].state);
+#else
+	return 0;
+#endif
+}
+
+static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+#ifdef CONFIG_NETPOLL_TRAP
+	if (netpoll_trap())
+		return;
+#endif
+	if (test_and_clear_bit(__LINK_STATE_XOFF,
+			       &dev->egress_subqueue[queue_index].state))
+		__netif_schedule(dev);
+#endif
+}
+
+static inline int netif_is_multiqueue(const struct net_device *dev)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+	return (!!(NETIF_F_MULTI_QUEUE & dev->features));
+#else
+	return 0;
+#endif
+}
 
 /* Use this variant when it is known for sure that it
  * is executing from interrupt context.
@@ -930,6 +1016,14 @@ static inline void netif_rx_complete(struct net_device *dev)
 {
 	unsigned long flags;
 
+#ifdef CONFIG_NETPOLL
+	/* Prevent race with netpoll - yes, this is a kludge.
+	 * But at least it doesn't penalize the non-netpoll
+	 * code path. */
+	if (test_bit(__LINK_STATE_POLL_LIST_FROZEN, &dev->state))
+		return;
+#endif
+
 	local_irq_save(flags);
 	__netif_rx_complete(dev);
 	local_irq_restore(flags);
@@ -992,15 +1086,24 @@ static inline void netif_tx_disable(struct net_device *dev)
 extern void		ether_setup(struct net_device *dev);
 
 /* Support for loadable net-drivers */
-extern struct net_device *alloc_netdev(int sizeof_priv, const char *name,
-				       void (*setup)(struct net_device *));
+extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
+				       void (*setup)(struct net_device *),
+				       unsigned int queue_count);
+#define alloc_netdev(sizeof_priv, name, setup) \
+	alloc_netdev_mq(sizeof_priv, name, setup, 1)
 extern int		register_netdev(struct net_device *dev);
 extern void		unregister_netdev(struct net_device *dev);
-/* Functions used for multicast support */
-extern void		dev_mc_upload(struct net_device *dev);
+/* Functions used for secondary unicast and multicast support */
+extern void		dev_set_rx_mode(struct net_device *dev);
+extern void		__dev_set_rx_mode(struct net_device *dev);
+extern int		dev_unicast_delete(struct net_device *dev, void *addr, int alen);
+extern int		dev_unicast_add(struct net_device *dev, void *addr, int alen);
 extern int 		dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
 extern int		dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
 extern void		dev_mc_discard(struct net_device *dev);
+extern int 		__dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
+extern int		__dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
+extern void		__dev_addr_discard(struct dev_addr_list **list);
 extern void		dev_set_promiscuity(struct net_device *dev, int inc);
 extern void		dev_set_allmulti(struct net_device *dev, int inc);
 extern void		netdev_state_change(struct net_device *dev);
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 10b5c627570..0eed0b7ab2d 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -275,7 +275,8 @@ struct nf_queue_handler {
 };
 extern int nf_register_queue_handler(int pf, 
                                      struct nf_queue_handler *qh);
-extern int nf_unregister_queue_handler(int pf);
+extern int nf_unregister_queue_handler(int pf,
+				       struct nf_queue_handler *qh);
 extern void nf_unregister_queue_handlers(struct nf_queue_handler *qh);
 extern void nf_reinject(struct sk_buff *skb,
 			struct nf_info *info,
diff --git a/include/linux/netfilter/nf_conntrack_pptp.h b/include/linux/netfilter/nf_conntrack_pptp.h
index 9d8144a488c..c93061f3314 100644
--- a/include/linux/netfilter/nf_conntrack_pptp.h
+++ b/include/linux/netfilter/nf_conntrack_pptp.h
@@ -4,6 +4,8 @@
 
 #include <linux/netfilter/nf_conntrack_common.h>
 
+extern const char *pptp_msg_name[];
+
 /* state of the control session */
 enum pptp_ctrlsess_state {
 	PPTP_SESSION_NONE,			/* no session present */
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index 7e733a6ba4f..64f425a855b 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -141,22 +141,22 @@ struct xt_match
 	/* Arguments changed since 2.6.9, as this must now handle
 	   non-linear skb, using skb_header_pointer and
 	   skb_ip_make_writable. */
-	int (*match)(const struct sk_buff *skb,
-		     const struct net_device *in,
-		     const struct net_device *out,
-		     const struct xt_match *match,
-		     const void *matchinfo,
-		     int offset,
-		     unsigned int protoff,
-		     int *hotdrop);
+	bool (*match)(const struct sk_buff *skb,
+		      const struct net_device *in,
+		      const struct net_device *out,
+		      const struct xt_match *match,
+		      const void *matchinfo,
+		      int offset,
+		      unsigned int protoff,
+		      bool *hotdrop);
 
 	/* Called when user tries to insert an entry of this type. */
 	/* Should return true or false. */
-	int (*checkentry)(const char *tablename,
-			  const void *ip,
-			  const struct xt_match *match,
-			  void *matchinfo,
-			  unsigned int hook_mask);
+	bool (*checkentry)(const char *tablename,
+			   const void *ip,
+			   const struct xt_match *match,
+			   void *matchinfo,
+			   unsigned int hook_mask);
 
 	/* Called when entry of this type deleted. */
 	void (*destroy)(const struct xt_match *match, void *matchinfo);
@@ -202,11 +202,11 @@ struct xt_target
            hook_mask is a bitmask of hooks from which it can be
            called. */
 	/* Should return true or false. */
-	int (*checkentry)(const char *tablename,
-			  const void *entry,
-			  const struct xt_target *target,
-			  void *targinfo,
-			  unsigned int hook_mask);
+	bool (*checkentry)(const char *tablename,
+			   const void *entry,
+			   const struct xt_target *target,
+			   void *targinfo,
+			   unsigned int hook_mask);
 
 	/* Called when entry of this type deleted. */
 	void (*destroy)(const struct xt_target *target, void *targinfo);
diff --git a/include/linux/netfilter/xt_u32.h b/include/linux/netfilter/xt_u32.h
new file mode 100644
index 00000000000..9947f56cdbd
--- /dev/null
+++ b/include/linux/netfilter/xt_u32.h
@@ -0,0 +1,40 @@
+#ifndef _XT_U32_H
+#define _XT_U32_H 1
+
+enum xt_u32_ops {
+	XT_U32_AND,
+	XT_U32_LEFTSH,
+	XT_U32_RIGHTSH,
+	XT_U32_AT,
+};
+
+struct xt_u32_location_element {
+	u_int32_t number;
+	u_int8_t nextop;
+};
+
+struct xt_u32_value_element {
+	u_int32_t min;
+	u_int32_t max;
+};
+
+/*
+ * Any way to allow for an arbitrary number of elements?
+ * For now, I settle with a limit of 10 each.
+ */
+#define XT_U32_MAXSIZE 10
+
+struct xt_u32_test {
+	struct xt_u32_location_element location[XT_U32_MAXSIZE+1];
+	struct xt_u32_value_element value[XT_U32_MAXSIZE+1];
+	u_int8_t nnums;
+	u_int8_t nvalues;
+};
+
+struct xt_u32 {
+	struct xt_u32_test tests[XT_U32_MAXSIZE+1];
+	u_int8_t ntests;
+	u_int8_t invert;
+};
+
+#endif /* _XT_U32_H */
diff --git a/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h b/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h
index d9bceedfb3d..daf50be22c9 100644
--- a/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h
+++ b/include/linux/netfilter_ipv4/ipt_CLUSTERIP.h
@@ -18,13 +18,13 @@ struct clusterip_config;
 struct ipt_clusterip_tgt_info {
 
 	u_int32_t flags;
-	
+
 	/* only relevant for new ones */
 	u_int8_t clustermac[6];
 	u_int16_t num_total_nodes;
 	u_int16_t num_local_nodes;
 	u_int16_t local_nodes[CLUSTERIP_MAX_NODES];
-	enum clusterip_hashmode hash_mode;
+	u_int32_t hash_mode;
 	u_int32_t hash_initval;
 
 	struct clusterip_config *config;
diff --git a/include/linux/netfilter_ipv6/ip6_tables.h b/include/linux/netfilter_ipv6/ip6_tables.h
index 4686f8342cb..9a720f05888 100644
--- a/include/linux/netfilter_ipv6/ip6_tables.h
+++ b/include/linux/netfilter_ipv6/ip6_tables.h
@@ -44,8 +44,14 @@ struct ip6t_ip6 {
 	char iniface[IFNAMSIZ], outiface[IFNAMSIZ];
 	unsigned char iniface_mask[IFNAMSIZ], outiface_mask[IFNAMSIZ];
 
-	/* ARGH, HopByHop uses 0, so can't do 0 = ANY,
-	   instead IP6T_F_NOPROTO must be set */
+	/* Upper protocol number
+	 * - The allowed value is 0 (any) or protocol number of last parsable
+	 *   header, which is 50 (ESP), 59 (No Next Header), 135 (MH), or
+	 *   the non IPv6 extension headers.
+	 * - The protocol numbers of IPv6 extension headers except of ESP and
+	 *   MH do not match any packets.
+	 * - You also need to set IP6T_FLAGS_PROTO to "flags" to check protocol.
+	 */
 	u_int16_t proto;
 	/* TOS to match iff flags & IP6T_F_TOS */
 	u_int8_t tos;
diff --git a/include/linux/pkt_cls.h b/include/linux/pkt_cls.h
index c3f01b3085a..30b8571e6b3 100644
--- a/include/linux/pkt_cls.h
+++ b/include/linux/pkt_cls.h
@@ -403,16 +403,13 @@ enum
  *   1..32767		Reserved for ematches inside kernel tree
  *   32768..65535	Free to use, not reliable
  */
-enum
-{
-	TCF_EM_CONTAINER,
-	TCF_EM_CMP,
-	TCF_EM_NBYTE,
-	TCF_EM_U32,
-	TCF_EM_META,
-	TCF_EM_TEXT,
-	__TCF_EM_MAX
-};
+#define	TCF_EM_CONTAINER	0
+#define	TCF_EM_CMP		1
+#define	TCF_EM_NBYTE		2
+#define	TCF_EM_U32		3
+#define	TCF_EM_META		4
+#define	TCF_EM_TEXT		5
+#define	TCF_EM_MAX		5
 
 enum
 {
diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h
index d10f3533850..268c51599eb 100644
--- a/include/linux/pkt_sched.h
+++ b/include/linux/pkt_sched.h
@@ -101,6 +101,15 @@ struct tc_prio_qopt
 	__u8	priomap[TC_PRIO_MAX+1];	/* Map: logical priority -> PRIO band */
 };
 
+enum
+{
+	TCA_PRIO_UNSPEC,
+	TCA_PRIO_MQ,
+	__TCA_PRIO_MAX
+};
+
+#define TCA_PRIO_MAX    (__TCA_PRIO_MAX - 1)
+
 /* TBF section */
 
 struct tc_tbf_qopt
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 1fae30af91f..c91476ce314 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -261,7 +261,7 @@ enum rtattr_type_t
 	RTA_FLOW,
 	RTA_CACHEINFO,
 	RTA_SESSION,
-	RTA_MP_ALGO,
+	RTA_MP_ALGO, /* no longer used */
 	RTA_TABLE,
 	__RTA_MAX
 };
@@ -570,10 +570,16 @@ static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
 }
 
 extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len);
+extern int __rtattr_parse_nested_compat(struct rtattr *tb[], int maxattr,
+				        struct rtattr *rta, int len);
 
 #define rtattr_parse_nested(tb, max, rta) \
 	rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta)))
 
+#define rtattr_parse_nested_compat(tb, max, rta, data, len) \
+({	data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \
+	__rtattr_parse_nested_compat(tb, max, rta, len); })
+
 extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo);
 extern int rtnl_unicast(struct sk_buff *skb, u32 pid);
 extern int rtnl_notify(struct sk_buff *skb, u32 pid, u32 group,
@@ -638,6 +644,18 @@ extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const voi
 ({	(start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
 	(skb)->len; })
 
+#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
+({	struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
+	RTA_PUT(skb, type, attrlen, data); \
+	RTA_NEST(skb, type); \
+	__start; })
+
+#define RTA_NEST_COMPAT_END(skb, start) \
+({	struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
+	(start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
+	RTA_NEST_END(skb, __nest); \
+	(skb)->len; })
+
 #define RTA_NEST_CANCEL(skb, start) \
 ({	if (start) \
 		skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 6f0b2f7d001..9391e4a4c34 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -65,13 +65,20 @@
  *	    is able to produce some skb->csum, it MUST use COMPLETE,
  *	    not UNNECESSARY.
  *
+ *	PARTIAL: identical to the case for output below.  This may occur
+ *	    on a packet received directly from another Linux OS, e.g.,
+ *	    a virtualised Linux kernel on the same host.  The packet can
+ *	    be treated in the same way as UNNECESSARY except that on
+ *	    output (i.e., forwarding) the checksum must be filled in
+ *	    by the OS or the hardware.
+ *
  * B. Checksumming on output.
  *
  *	NONE: skb is checksummed by protocol or csum is not required.
  *
  *	PARTIAL: device is required to csum packet as seen by hard_start_xmit
- *	from skb->transport_header to the end and to record the checksum
- *	at skb->transport_header + skb->csum.
+ *	from skb->csum_start to the end and to record the checksum
+ *	at skb->csum_start + skb->csum_offset.
  *
  *	Device must show its capabilities in dev->features, set
  *	at device setup time.
@@ -82,6 +89,7 @@
  *			  TCP/UDP over IPv4. Sigh. Vendors like this
  *			  way by an unknown reason. Though, see comment above
  *			  about CHECKSUM_UNNECESSARY. 8)
+ *	NETIF_F_IPV6_CSUM about as dumb as the last one but does IPv6 instead.
  *
  *	Any questions? No questions, good. 		--ANK
  */
@@ -147,8 +155,8 @@ struct skb_shared_info {
 
 /* We divide dataref into two halves.  The higher 16 bits hold references
  * to the payload part of skb->data.  The lower 16 bits hold references to
- * the entire skb->data.  It is up to the users of the skb to agree on
- * where the payload starts.
+ * the entire skb->data.  A clone of a headerless skb holds the length of
+ * the header in skb->hdr_len.
  *
  * All users must obey the rule that the skb->data reference count must be
  * greater than or equal to the payload reference count.
@@ -196,7 +204,6 @@ typedef unsigned char *sk_buff_data_t;
  *	@sk: Socket we are owned by
  *	@tstamp: Time we arrived
  *	@dev: Device we arrived on/are leaving by
- *	@iif: ifindex of device we arrived on
  *	@transport_header: Transport layer header
  *	@network_header: Network layer header
  *	@mac_header: Link layer header
@@ -206,6 +213,7 @@ typedef unsigned char *sk_buff_data_t;
  *	@len: Length of actual data
  *	@data_len: Data length
  *	@mac_len: Length of link layer header
+ *	@hdr_len: writable header length of cloned skb
  *	@csum: Checksum (must include start/offset pair)
  *	@csum_start: Offset from skb->head where checksumming should start
  *	@csum_offset: Offset from csum_start where checksum should be stored
@@ -227,9 +235,12 @@ typedef unsigned char *sk_buff_data_t;
  *	@mark: Generic packet mark
  *	@nfct: Associated connection, if any
  *	@ipvs_property: skbuff is owned by ipvs
+ *	@nf_trace: netfilter packet trace flag
  *	@nfctinfo: Relationship of this skb to the connection
  *	@nfct_reasm: netfilter conntrack re-assembly pointer
  *	@nf_bridge: Saved data about a bridged frame - see br_netfilter.c
+ *	@iif: ifindex of device we arrived on
+ *	@queue_mapping: Queue mapping for multiqueue devices
  *	@tc_index: Traffic control index
  *	@tc_verd: traffic control verdict
  *	@dma_cookie: a cookie to one of several possible DMA operations
@@ -245,8 +256,6 @@ struct sk_buff {
 	struct sock		*sk;
 	ktime_t			tstamp;
 	struct net_device	*dev;
-	int			iif;
-	/* 4 byte hole on 64 bit*/
 
 	struct  dst_entry	*dst;
 	struct	sec_path	*sp;
@@ -260,8 +269,9 @@ struct sk_buff {
 	char			cb[48];
 
 	unsigned int		len,
-				data_len,
-				mac_len;
+				data_len;
+	__u16			mac_len,
+				hdr_len;
 	union {
 		__wsum		csum;
 		struct {
@@ -277,7 +287,8 @@ struct sk_buff {
 				nfctinfo:3;
 	__u8			pkt_type:3,
 				fclone:2,
-				ipvs_property:1;
+				ipvs_property:1,
+				nf_trace:1;
 	__be16			protocol;
 
 	void			(*destructor)(struct sk_buff *skb);
@@ -288,12 +299,18 @@ struct sk_buff {
 #ifdef CONFIG_BRIDGE_NETFILTER
 	struct nf_bridge_info	*nf_bridge;
 #endif
+
+	int			iif;
+	__u16			queue_mapping;
+
 #ifdef CONFIG_NET_SCHED
 	__u16			tc_index;	/* traffic control index */
 #ifdef CONFIG_NET_CLS_ACT
 	__u16			tc_verd;	/* traffic control verdict */
 #endif
 #endif
+	/* 2 byte hole */
+
 #ifdef CONFIG_NET_DMA
 	dma_cookie_t		dma_cookie;
 #endif
@@ -1322,6 +1339,20 @@ static inline struct sk_buff *netdev_alloc_skb(struct net_device *dev,
 }
 
 /**
+ *	skb_clone_writable - is the header of a clone writable
+ *	@skb: buffer to check
+ *	@len: length up to which to write
+ *
+ *	Returns true if modifying the header part of the cloned buffer
+ *	does not requires the data to be copied.
+ */
+static inline int skb_clone_writable(struct sk_buff *skb, int len)
+{
+	return !skb_header_cloned(skb) &&
+	       skb_headroom(skb) + len <= skb->hdr_len;
+}
+
+/**
  *	skb_cow - copy header of skb when it is required
  *	@skb: buffer to cow
  *	@headroom: needed headroom
@@ -1709,6 +1740,20 @@ static inline void skb_init_secmark(struct sk_buff *skb)
 { }
 #endif
 
+static inline void skb_set_queue_mapping(struct sk_buff *skb, u16 queue_mapping)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+	skb->queue_mapping = queue_mapping;
+#endif
+}
+
+static inline void skb_copy_queue_mapping(struct sk_buff *to, const struct sk_buff *from)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+	to->queue_mapping = from->queue_mapping;
+#endif
+}
+
 static inline int skb_is_gso(const struct sk_buff *skb)
 {
 	return skb_shinfo(skb)->gso_size;
diff --git a/include/linux/socket.h b/include/linux/socket.h
index 6e7c9483a6a..fe195c97a89 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -287,6 +287,7 @@ struct ucred {
 #define SOL_NETLINK	270
 #define SOL_TIPC	271
 #define SOL_RXRPC	272
+#define SOL_PPPOL2TP	273
 
 /* IPX options */
 #define IPX_TYPE	1
diff --git a/include/linux/udp.h b/include/linux/udp.h
index 6de445c31a6..8ec703f462d 100644
--- a/include/linux/udp.h
+++ b/include/linux/udp.h
@@ -42,6 +42,7 @@ static inline struct udphdr *udp_hdr(const struct sk_buff *skb)
 /* UDP encapsulation types */
 #define UDP_ENCAP_ESPINUDP_NON_IKE	1 /* draft-ietf-ipsec-nat-t-ike-00/01 */
 #define UDP_ENCAP_ESPINUDP	2 /* draft-ietf-ipsec-udp-encaps-06 */
+#define UDP_ENCAP_L2TPINUDP	3 /* rfc2661 */
 
 #ifdef __KERNEL__
 #include <linux/types.h>
@@ -70,6 +71,11 @@ struct udp_sock {
 #define UDPLITE_SEND_CC  0x2  		/* set via udplite setsockopt         */
 #define UDPLITE_RECV_CC  0x4		/* set via udplite setsocktopt        */
 	__u8		 pcflag;        /* marks socket as UDP-Lite if > 0    */
+	__u8		 unused[3];
+	/*
+	 * For encapsulation sockets.
+	 */
+	int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
 };
 
 static inline struct udp_sock *udp_sk(const struct sock *sk)