[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / include / uapi / linux / l2tp.h

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

#ifndef _UAPI_LINUX_L2TP_H_
#define _UAPI_LINUX_L2TP_H_

#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/in6.h>

#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 */
	__kernel_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[__SOCK_SIZE__ -
			      sizeof(__kernel_sa_family_t) -
			      sizeof(__be16) - sizeof(struct in_addr) -
			      sizeof(__u32)];
};

/**
 * struct sockaddr_l2tpip6 - the sockaddr structure for L2TP-over-IPv6 sockets
 * @l2tp_family:  address family number AF_L2TPIP.
 * @l2tp_addr:    protocol specific address information
 * @l2tp_conn_id: connection id of tunnel
 */
struct sockaddr_l2tpip6 {
	/* The first fields must match struct sockaddr_in6 */
	__kernel_sa_family_t l2tp_family; /* AF_INET6 */
	__be16		l2tp_unused;	/* INET port number (unused) */
	__be32		l2tp_flowinfo;	/* IPv6 flow information */
	struct in6_addr	l2tp_addr;	/* IPv6 address */
	__u32		l2tp_scope_id;	/* scope id (new in RFC2553) */
	__u32		l2tp_conn_id;	/* Connection ID of tunnel */
};

/*****************************************************************************
 *  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, enum l2tp_debug_flags */
	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_IP6_SADDR,		/* struct in6_addr */
	L2TP_ATTR_IP6_DADDR,		/* struct in6_addr */
	L2TP_ATTR_UDP_ZERO_CSUM6_TX,	/* flag */
	L2TP_ATTR_UDP_ZERO_CSUM6_RX,	/* flag */
	L2TP_ATTR_PAD,
	__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_PAD,
	__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,
};

/**
 * enum l2tp_debug_flags - debug message categories for L2TP tunnels/sessions
 *
 * @L2TP_MSG_DEBUG: verbose debug (if compiled in)
 * @L2TP_MSG_CONTROL: userspace - kernel interface
 * @L2TP_MSG_SEQ: sequence numbers
 * @L2TP_MSG_DATA: data packets
 */
enum l2tp_debug_flags {
	L2TP_MSG_DEBUG		= (1 << 0),
	L2TP_MSG_CONTROL	= (1 << 1),
	L2TP_MSG_SEQ		= (1 << 2),
	L2TP_MSG_DATA		= (1 << 3),
};

/*
 * NETLINK_GENERIC related info
 */
#define L2TP_GENL_NAME		"l2tp"
#define L2TP_GENL_VERSION	0x1
#define L2TP_GENL_MCGROUP       "l2tp"

#endif /* _UAPI_LINUX_L2TP_H_ */
Commit	Line	Data
607ca46e DH	1	/*
	2	* L2TP-over-IP socket for L2TPv3.
	3	*
	4	* Author: James Chapman <jchapman@katalix.com>
	5	*/
	6
	7	#ifndef _UAPI_LINUX_L2TP_H_
	8	#define _UAPI_LINUX_L2TP_H_
	9
	10	#include <linux/types.h>
	11	#include <linux/socket.h>
a725eb15 DL	12	#include <linux/in.h>
a725eb15 DL	13	#include <linux/in6.h>
607ca46e DH	14
	15	#define IPPROTO_L2TP 115
	16
	17	/**
	18	* struct sockaddr_l2tpip - the sockaddr structure for L2TP-over-IP sockets
	19	* @l2tp_family: address family number AF_L2TPIP.
	20	* @l2tp_addr: protocol specific address information
	21	* @l2tp_conn_id: connection id of tunnel
	22	*/
	23	#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
	24	struct sockaddr_l2tpip {
	25	/* The first fields must match struct sockaddr_in */
	26	__kernel_sa_family_t l2tp_family; /* AF_INET */
	27	__be16 l2tp_unused; /* INET port number (unused) */
	28	struct in_addr l2tp_addr; /* Internet address */
	29
	30	__u32 l2tp_conn_id; /* Connection ID of tunnel */
	31
	32	/* Pad to size of `struct sockaddr'. */
a725eb15	33	unsigned char __pad[__SOCK_SIZE__ -
607ca46e DH	34	sizeof(__kernel_sa_family_t) -
	35	sizeof(__be16) - sizeof(struct in_addr) -
	36	sizeof(__u32)];
	37	};
	38
	39	/**
	40	* struct sockaddr_l2tpip6 - the sockaddr structure for L2TP-over-IPv6 sockets
	41	* @l2tp_family: address family number AF_L2TPIP.
	42	* @l2tp_addr: protocol specific address information
	43	* @l2tp_conn_id: connection id of tunnel
	44	*/
	45	struct sockaddr_l2tpip6 {
	46	/* The first fields must match struct sockaddr_in6 */
	47	__kernel_sa_family_t l2tp_family; /* AF_INET6 */
	48	__be16 l2tp_unused; /* INET port number (unused) */
	49	__be32 l2tp_flowinfo; /* IPv6 flow information */
	50	struct in6_addr l2tp_addr; /* IPv6 address */
	51	__u32 l2tp_scope_id; /* scope id (new in RFC2553) */
	52	__u32 l2tp_conn_id; /* Connection ID of tunnel */
	53	};
	54
	55	/*****************************************************************************
	56	* NETLINK_GENERIC netlink family.
	57	*****************************************************************************/
	58
	59	/*
	60	* Commands.
	61	* Valid TLVs of each command are:-
	62	* TUNNEL_CREATE - CONN_ID, pw_type, netns, ifname, ipinfo, udpinfo, udpcsum, vlanid
	63	* TUNNEL_DELETE - CONN_ID
	64	* TUNNEL_MODIFY - CONN_ID, udpcsum
	65	* TUNNEL_GETSTATS - CONN_ID, (stats)
	66	* TUNNEL_GET - CONN_ID, (...)
	67	* SESSION_CREATE - SESSION_ID, PW_TYPE, offset, data_seq, cookie, peer_cookie, offset, l2spec
	68	* SESSION_DELETE - SESSION_ID
	69	* SESSION_MODIFY - SESSION_ID, data_seq
	70	* SESSION_GET - SESSION_ID, (...)
	71	* SESSION_GETSTATS - SESSION_ID, (stats)
	72	*
	73	*/
	74	enum {
	75	L2TP_CMD_NOOP,
	76	L2TP_CMD_TUNNEL_CREATE,
	77	L2TP_CMD_TUNNEL_DELETE,
	78	L2TP_CMD_TUNNEL_MODIFY,
	79	L2TP_CMD_TUNNEL_GET,
	80	L2TP_CMD_SESSION_CREATE,
	81	L2TP_CMD_SESSION_DELETE,
	82	L2TP_CMD_SESSION_MODIFY,
	83	L2TP_CMD_SESSION_GET,
	84	__L2TP_CMD_MAX,
	85	};
	86
	87	#define L2TP_CMD_MAX (__L2TP_CMD_MAX - 1)
	88
	89	/*
	90	* ATTR types defined for L2TP
	91	*/
	92	enum {
	93	L2TP_ATTR_NONE, /* no data */
	94	L2TP_ATTR_PW_TYPE, /* u16, enum l2tp_pwtype */
	95	L2TP_ATTR_ENCAP_TYPE, /* u16, enum l2tp_encap_type */
	96	L2TP_ATTR_OFFSET, /* u16 */
	97	L2TP_ATTR_DATA_SEQ, /* u16 */
98	L2TP_ATTR_L2SPEC_TYPE, /* u8, enum l2tp_l2spec_type */
99	L2TP_ATTR_L2SPEC_LEN, /* u8, enum l2tp_l2spec_type */
100	L2TP_ATTR_PROTO_VERSION, /* u8 */
101	L2TP_ATTR_IFNAME, /* string */
102	L2TP_ATTR_CONN_ID, /* u32 */
103	L2TP_ATTR_PEER_CONN_ID, /* u32 */
104	L2TP_ATTR_SESSION_ID, /* u32 */
105	L2TP_ATTR_PEER_SESSION_ID, /* u32 */
106	L2TP_ATTR_UDP_CSUM, /* u8 */
107	L2TP_ATTR_VLAN_ID, /* u16 */
108	L2TP_ATTR_COOKIE, /* 0, 4 or 8 bytes */
109	L2TP_ATTR_PEER_COOKIE, /* 0, 4 or 8 bytes */
41c43fbe	110	L2TP_ATTR_DEBUG, /* u32, enum l2tp_debug_flags */
607ca46e DH	111	L2TP_ATTR_RECV_SEQ, /* u8 */
	112	L2TP_ATTR_SEND_SEQ, /* u8 */
	113	L2TP_ATTR_LNS_MODE, /* u8 */
	114	L2TP_ATTR_USING_IPSEC, /* u8 */
	115	L2TP_ATTR_RECV_TIMEOUT, /* msec */
	116	L2TP_ATTR_FD, /* int */
	117	L2TP_ATTR_IP_SADDR, /* u32 */
	118	L2TP_ATTR_IP_DADDR, /* u32 */
	119	L2TP_ATTR_UDP_SPORT, /* u16 */
	120	L2TP_ATTR_UDP_DPORT, /* u16 */
	121	L2TP_ATTR_MTU, /* u16 */
	122	L2TP_ATTR_MRU, /* u16 */
	123	L2TP_ATTR_STATS, /* nested */
	124	L2TP_ATTR_IP6_SADDR, /* struct in6_addr */
	125	L2TP_ATTR_IP6_DADDR, /* struct in6_addr */
3f11ec04 AST	126	L2TP_ATTR_UDP_ZERO_CSUM6_TX, /* flag */
3f11ec04 AST	127	L2TP_ATTR_UDP_ZERO_CSUM6_RX, /* flag */
2175d87c	128	L2TP_ATTR_PAD,
607ca46e DH	129	__L2TP_ATTR_MAX,
	130	};
	131
	132	#define L2TP_ATTR_MAX (__L2TP_ATTR_MAX - 1)
	133
	134	/* Nested in L2TP_ATTR_STATS */
	135	enum {
	136	L2TP_ATTR_STATS_NONE, /* no data */
	137	L2TP_ATTR_TX_PACKETS, /* u64 */
	138	L2TP_ATTR_TX_BYTES, /* u64 */
	139	L2TP_ATTR_TX_ERRORS, /* u64 */
	140	L2TP_ATTR_RX_PACKETS, /* u64 */
	141	L2TP_ATTR_RX_BYTES, /* u64 */
	142	L2TP_ATTR_RX_SEQ_DISCARDS, /* u64 */
	143	L2TP_ATTR_RX_OOS_PACKETS, /* u64 */
	144	L2TP_ATTR_RX_ERRORS, /* u64 */
1c714a92	145	L2TP_ATTR_STATS_PAD,
607ca46e DH	146	__L2TP_ATTR_STATS_MAX,
	147	};
	148
	149	#define L2TP_ATTR_STATS_MAX (__L2TP_ATTR_STATS_MAX - 1)
	150
	151	enum l2tp_pwtype {
	152	L2TP_PWTYPE_NONE = 0x0000,
	153	L2TP_PWTYPE_ETH_VLAN = 0x0004,
	154	L2TP_PWTYPE_ETH = 0x0005,
	155	L2TP_PWTYPE_PPP = 0x0007,
	156	L2TP_PWTYPE_PPP_AC = 0x0008,
	157	L2TP_PWTYPE_IP = 0x000b,
	158	__L2TP_PWTYPE_MAX
	159	};
	160
	161	enum l2tp_l2spec_type {
	162	L2TP_L2SPECTYPE_NONE,
	163	L2TP_L2SPECTYPE_DEFAULT,
	164	};
	165
	166	enum l2tp_encap_type {
	167	L2TP_ENCAPTYPE_UDP,
	168	L2TP_ENCAPTYPE_IP,
	169	};
	170
	171	enum l2tp_seqmode {
	172	L2TP_SEQ_NONE = 0,
	173	L2TP_SEQ_IP = 1,
	174	L2TP_SEQ_ALL = 2,
	175	};
	176
41c43fbe AST	177	/**
	178	* enum l2tp_debug_flags - debug message categories for L2TP tunnels/sessions
	179	*
	180	* @L2TP_MSG_DEBUG: verbose debug (if compiled in)
	181	* @L2TP_MSG_CONTROL: userspace - kernel interface
	182	* @L2TP_MSG_SEQ: sequence numbers
	183	* @L2TP_MSG_DATA: data packets
	184	*/
	185	enum l2tp_debug_flags {
	186	L2TP_MSG_DEBUG = (1 << 0),
	187	L2TP_MSG_CONTROL = (1 << 1),
	188	L2TP_MSG_SEQ = (1 << 2),
	189	L2TP_MSG_DATA = (1 << 3),
	190	};
	191
607ca46e DH	192	/*
	193	* NETLINK_GENERIC related info
	194	*/
	195	#define L2TP_GENL_NAME "l2tp"
	196	#define L2TP_GENL_VERSION 0x1
33f72e6f	197	#define L2TP_GENL_MCGROUP "l2tp"
607ca46e DH	198
607ca46e DH	199	#endif /* _UAPI_LINUX_L2TP_H_ */