[net-next-2.6.git] / include / linux / l2tp.h

/*
 * L2TP-over-IP socket for L2TPv3.
 *
 * Author: James Chapman <jchapman@katalix.com>
 */

#ifndef _LINUX_L2TP_H_
#define _LINUX_L2TP_H_

#include <linux/types.h>
#ifdef __KERNEL__
#include <linux/socket.h>
#include <linux/in.h>
#else
#include <netinet/in.h>
#endif

#define IPPROTO_L2TP		115

/**
 * struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets
 * @l2tp_family:  address family number AF_L2TPIP.
 * @l2tp_addr:    protocol specific address information
 * @l2tp_conn_id: connection id of tunnel
 */
#define __SOCK_SIZE__	16		/* sizeof(struct sockaddr)	*/
struct sockaddr_l2tpip {
	/* The first fields must match struct sockaddr_in */
	sa_family_t	l2tp_family;	/* AF_INET */
	__be16		l2tp_unused;	/* INET port number (unused) */
	struct in_addr	l2tp_addr;	/* Internet address */

	__u32		l2tp_conn_id;	/* Connection ID of tunnel */

	/* Pad to size of `struct sockaddr'. */
	unsigned char	__pad[sizeof(struct sockaddr) - sizeof(sa_family_t) -
			      sizeof(__be16) - sizeof(struct in_addr) -
			      sizeof(__u32)];
};

/*****************************************************************************
 *  NETLINK_GENERIC netlink family.
 *****************************************************************************/

/*
 * Commands.
 * Valid TLVs of each command are:-
 * TUNNEL_CREATE	- CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum, vlanid
 * TUNNEL_DELETE	- CONN_ID
 * TUNNEL_MODIFY	- CONN_ID, udpcsum
 * TUNNEL_GETSTATS	- CONN_ID, (stats)
 * TUNNEL_GET		- CONN_ID, (...)
 * SESSION_CREATE	- SESSION_ID, PW_TYPE, offset, data_seq, cookie, peer_cookie, offset, l2spec
 * SESSION_DELETE	- SESSION_ID
 * SESSION_MODIFY	- SESSION_ID, data_seq
 * SESSION_GET		- SESSION_ID, (...)
 * SESSION_GETSTATS	- SESSION_ID, (stats)
 *
 */
enum {
	L2TP_CMD_NOOP,
	L2TP_CMD_TUNNEL_CREATE,
	L2TP_CMD_TUNNEL_DELETE,
	L2TP_CMD_TUNNEL_MODIFY,
	L2TP_CMD_TUNNEL_GET,
	L2TP_CMD_SESSION_CREATE,
	L2TP_CMD_SESSION_DELETE,
	L2TP_CMD_SESSION_MODIFY,
	L2TP_CMD_SESSION_GET,
	__L2TP_CMD_MAX,
};

#define L2TP_CMD_MAX			(__L2TP_CMD_MAX - 1)

/*
 * ATTR types defined for L2TP
 */
enum {
	L2TP_ATTR_NONE,			/* no data */
	L2TP_ATTR_PW_TYPE,		/* u16, enum l2tp_pwtype */
	L2TP_ATTR_ENCAP_TYPE,		/* u16, enum l2tp_encap_type */
	L2TP_ATTR_OFFSET,		/* u16 */
	L2TP_ATTR_DATA_SEQ,		/* u16 */
	L2TP_ATTR_L2SPEC_TYPE,		/* u8, enum l2tp_l2spec_type */
	L2TP_ATTR_L2SPEC_LEN,		/* u8, enum l2tp_l2spec_type */
	L2TP_ATTR_PROTO_VERSION,	/* u8 */
	L2TP_ATTR_IFNAME,		/* string */
	L2TP_ATTR_CONN_ID,		/* u32 */
	L2TP_ATTR_PEER_CONN_ID,		/* u32 */
	L2TP_ATTR_SESSION_ID,		/* u32 */
	L2TP_ATTR_PEER_SESSION_ID,	/* u32 */
	L2TP_ATTR_UDP_CSUM,		/* u8 */
	L2TP_ATTR_VLAN_ID,		/* u16 */
	L2TP_ATTR_COOKIE,		/* 0, 4 or 8 bytes */
	L2TP_ATTR_PEER_COOKIE,		/* 0, 4 or 8 bytes */
	L2TP_ATTR_DEBUG,		/* u32 */
	L2TP_ATTR_RECV_SEQ,		/* u8 */
	L2TP_ATTR_SEND_SEQ,		/* u8 */
	L2TP_ATTR_LNS_MODE,		/* u8 */
	L2TP_ATTR_USING_IPSEC,		/* u8 */
	L2TP_ATTR_RECV_TIMEOUT,		/* msec */
	L2TP_ATTR_FD,			/* int */
	L2TP_ATTR_IP_SADDR,		/* u32 */
	L2TP_ATTR_IP_DADDR,		/* u32 */
	L2TP_ATTR_UDP_SPORT,		/* u16 */
	L2TP_ATTR_UDP_DPORT,		/* u16 */
	L2TP_ATTR_MTU,			/* u16 */
	L2TP_ATTR_MRU,			/* u16 */
	L2TP_ATTR_STATS,		/* nested */
	__L2TP_ATTR_MAX,
};

#define L2TP_ATTR_MAX			(__L2TP_ATTR_MAX - 1)

/* Nested in L2TP_ATTR_STATS */
enum {
	L2TP_ATTR_STATS_NONE,		/* no data */
	L2TP_ATTR_TX_PACKETS,		/* u64 */
	L2TP_ATTR_TX_BYTES,		/* u64 */
	L2TP_ATTR_TX_ERRORS,		/* u64 */
	L2TP_ATTR_RX_PACKETS,		/* u64 */
	L2TP_ATTR_RX_BYTES,		/* u64 */
	L2TP_ATTR_RX_SEQ_DISCARDS,	/* u64 */
	L2TP_ATTR_RX_OOS_PACKETS,	/* u64 */
	L2TP_ATTR_RX_ERRORS,		/* u64 */
	__L2TP_ATTR_STATS_MAX,
};

#define L2TP_ATTR_STATS_MAX		(__L2TP_ATTR_STATS_MAX - 1)

enum l2tp_pwtype {
	L2TP_PWTYPE_NONE = 0x0000,
	L2TP_PWTYPE_ETH_VLAN = 0x0004,
	L2TP_PWTYPE_ETH = 0x0005,
	L2TP_PWTYPE_PPP = 0x0007,
	L2TP_PWTYPE_PPP_AC = 0x0008,
	L2TP_PWTYPE_IP = 0x000b,
	__L2TP_PWTYPE_MAX
};

enum l2tp_l2spec_type {
	L2TP_L2SPECTYPE_NONE,
	L2TP_L2SPECTYPE_DEFAULT,
};

enum l2tp_encap_type {
	L2TP_ENCAPTYPE_UDP,
	L2TP_ENCAPTYPE_IP,
};

enum l2tp_seqmode {
	L2TP_SEQ_NONE = 0,
	L2TP_SEQ_IP = 1,
	L2TP_SEQ_ALL = 2,
};

/*
 * NETLINK_GENERIC related info
 */
#define L2TP_GENL_NAME		"l2tp"
#define L2TP_GENL_VERSION	0x1

#endif
Commit	Line	Data
0d76751f JC	1	/*
	2	* L2TP-over-IP socket for L2TPv3.
	3	*
	4	* Author: James Chapman <jchapman@katalix.com>
	5	*/
	6
	7	#ifndef _LINUX_L2TP_H_
	8	#define _LINUX_L2TP_H_
	9
	10	#include <linux/types.h>
	11	#ifdef __KERNEL__
	12	#include <linux/socket.h>
	13	#include <linux/in.h>
309795f4 JC	14	#else
309795f4 JC	15	#include <netinet/in.h>
0d76751f JC	16	#endif
	17
	18	#define IPPROTO_L2TP 115
	19
	20	/**
	21	* struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets
	22	* @l2tp_family: address family number AF_L2TPIP.
	23	* @l2tp_addr: protocol specific address information
	24	* @l2tp_conn_id: connection id of tunnel
	25	*/
309795f4	26	#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
0d76751f JC	27	struct sockaddr_l2tpip {
	28	/* The first fields must match struct sockaddr_in */
	29	sa_family_t l2tp_family; /* AF_INET */
	30	__be16 l2tp_unused; /* INET port number (unused) */
	31	struct in_addr l2tp_addr; /* Internet address */
	32
	33	__u32 l2tp_conn_id; /* Connection ID of tunnel */
	34
	35	/* Pad to size of `struct sockaddr'. */
	36	unsigned char __pad[sizeof(struct sockaddr) - sizeof(sa_family_t) -
	37	sizeof(__be16) - sizeof(struct in_addr) -
	38	sizeof(__u32)];
	39	};
	40
309795f4 JC	41	/*****************************************************************************
	42	* NETLINK_GENERIC netlink family.
	43	*****************************************************************************/
	44
	45	/*
	46	* Commands.
	47	* Valid TLVs of each command are:-
	48	* TUNNEL_CREATE - CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum, vlanid
	49	* TUNNEL_DELETE - CONN_ID
	50	* TUNNEL_MODIFY - CONN_ID, udpcsum
	51	* TUNNEL_GETSTATS - CONN_ID, (stats)
	52	* TUNNEL_GET - CONN_ID, (...)
	53	* SESSION_CREATE - SESSION_ID, PW_TYPE, offset, data_seq, cookie, peer_cookie, offset, l2spec
	54	* SESSION_DELETE - SESSION_ID
	55	* SESSION_MODIFY - SESSION_ID, data_seq
	56	* SESSION_GET - SESSION_ID, (...)
	57	* SESSION_GETSTATS - SESSION_ID, (stats)
	58	*
	59	*/
	60	enum {
	61	L2TP_CMD_NOOP,
	62	L2TP_CMD_TUNNEL_CREATE,
	63	L2TP_CMD_TUNNEL_DELETE,
	64	L2TP_CMD_TUNNEL_MODIFY,
	65	L2TP_CMD_TUNNEL_GET,
	66	L2TP_CMD_SESSION_CREATE,
	67	L2TP_CMD_SESSION_DELETE,
	68	L2TP_CMD_SESSION_MODIFY,
	69	L2TP_CMD_SESSION_GET,
	70	__L2TP_CMD_MAX,
	71	};
	72
	73	#define L2TP_CMD_MAX (__L2TP_CMD_MAX - 1)
	74
	75	/*
	76	* ATTR types defined for L2TP
	77	*/
	78	enum {
	79	L2TP_ATTR_NONE, /* no data */
	80	L2TP_ATTR_PW_TYPE, /* u16, enum l2tp_pwtype */
	81	L2TP_ATTR_ENCAP_TYPE, /* u16, enum l2tp_encap_type */
	82	L2TP_ATTR_OFFSET, /* u16 */
	83	L2TP_ATTR_DATA_SEQ, /* u16 */
	84	L2TP_ATTR_L2SPEC_TYPE, /* u8, enum l2tp_l2spec_type */
	85	L2TP_ATTR_L2SPEC_LEN, /* u8, enum l2tp_l2spec_type */
	86	L2TP_ATTR_PROTO_VERSION, /* u8 */
	87	L2TP_ATTR_IFNAME, /* string */
	88	L2TP_ATTR_CONN_ID, /* u32 */
	89	L2TP_ATTR_PEER_CONN_ID, /* u32 */
	90	L2TP_ATTR_SESSION_ID, /* u32 */
	91	L2TP_ATTR_PEER_SESSION_ID, /* u32 */
	92	L2TP_ATTR_UDP_CSUM, /* u8 */
	93	L2TP_ATTR_VLAN_ID, /* u16 */
	94	L2TP_ATTR_COOKIE, /* 0, 4 or 8 bytes */
	95	L2TP_ATTR_PEER_COOKIE, /* 0, 4 or 8 bytes */
	96	L2TP_ATTR_DEBUG, /* u32 */
	97	L2TP_ATTR_RECV_SEQ, /* u8 */
	98	L2TP_ATTR_SEND_SEQ, /* u8 */
	99	L2TP_ATTR_LNS_MODE, /* u8 */
	100	L2TP_ATTR_USING_IPSEC, /* u8 */
	101	L2TP_ATTR_RECV_TIMEOUT, /* msec */
	102	L2TP_ATTR_FD, /* int */
	103	L2TP_ATTR_IP_SADDR, /* u32 */
	104	L2TP_ATTR_IP_DADDR, /* u32 */
105	L2TP_ATTR_UDP_SPORT, /* u16 */
106	L2TP_ATTR_UDP_DPORT, /* u16 */
107	L2TP_ATTR_MTU, /* u16 */
108	L2TP_ATTR_MRU, /* u16 */
109	L2TP_ATTR_STATS, /* nested */
110	__L2TP_ATTR_MAX,
111	};
112
113	#define L2TP_ATTR_MAX (__L2TP_ATTR_MAX - 1)
114
115	/* Nested in L2TP_ATTR_STATS */
116	enum {
117	L2TP_ATTR_STATS_NONE, /* no data */
118	L2TP_ATTR_TX_PACKETS, /* u64 */
119	L2TP_ATTR_TX_BYTES, /* u64 */
120	L2TP_ATTR_TX_ERRORS, /* u64 */
121	L2TP_ATTR_RX_PACKETS, /* u64 */
122	L2TP_ATTR_RX_BYTES, /* u64 */
123	L2TP_ATTR_RX_SEQ_DISCARDS, /* u64 */
124	L2TP_ATTR_RX_OOS_PACKETS, /* u64 */
125	L2TP_ATTR_RX_ERRORS, /* u64 */
126	__L2TP_ATTR_STATS_MAX,
127	};
128
129	#define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1)
130
131	enum l2tp_pwtype {
132	L2TP_PWTYPE_NONE = 0x0000,
133	L2TP_PWTYPE_ETH_VLAN = 0x0004,
134	L2TP_PWTYPE_ETH = 0x0005,
135	L2TP_PWTYPE_PPP = 0x0007,
136	L2TP_PWTYPE_PPP_AC = 0x0008,
137	L2TP_PWTYPE_IP = 0x000b,
138	__L2TP_PWTYPE_MAX
139	};
140
141	enum l2tp_l2spec_type {
142	L2TP_L2SPECTYPE_NONE,
143	L2TP_L2SPECTYPE_DEFAULT,
144	};
145
146	enum l2tp_encap_type {
147	L2TP_ENCAPTYPE_UDP,
148	L2TP_ENCAPTYPE_IP,
149	};
150
151	enum l2tp_seqmode {
152	L2TP_SEQ_NONE = 0,
153	L2TP_SEQ_IP = 1,
154	L2TP_SEQ_ALL = 2,
155	};
156
157	/*
158	* NETLINK_GENERIC related info
159	*/
160	#define L2TP_GENL_NAME "l2tp"
161	#define L2TP_GENL_VERSION 0x1
162
0d76751f	163	#endif