[deliverable/linux.git] / include / linux / if_pppox.h

/***************************************************************************
 * Linux PPP over X - Generic PPP transport layer sockets
 * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516) 
 *
 * This file supplies definitions required by the PPP over Ethernet driver
 * (pppox.c).  All version information wrt this file is located in pppox.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_PPPOX_H
#define __LINUX_IF_PPPOX_H


#include <asm/types.h>
#include <asm/byteorder.h>

#ifdef  __KERNEL__
#include <linux/if_ether.h>
#include <linux/if.h>
#include <linux/netdevice.h>
#include <asm/semaphore.h>
#include <linux/ppp_channel.h>
#endif /* __KERNEL__ */

/* For user-space programs to pick up these definitions
 * which they wouldn't get otherwise without defining __KERNEL__
 */
#ifndef AF_PPPOX
#define AF_PPPOX	24
#define PF_PPPOX	AF_PPPOX
#endif /* !(AF_PPPOX) */

/************************************************************************ 
 * PPPoE addressing definition 
 */ 
typedef __u16 sid_t; 
struct pppoe_addr{ 
       sid_t           sid;                    /* Session identifier */ 
       unsigned char   remote[ETH_ALEN];       /* Remote address */ 
       char            dev[IFNAMSIZ];          /* Local device to use */ 
}; 
 
/************************************************************************ 
 * Protocols supported by AF_PPPOX 
 */ 
#define PX_PROTO_OE    0 /* Currently just PPPoE */
#define PX_MAX_PROTO   1	
 
struct sockaddr_pppox { 
       sa_family_t     sa_family;            /* address family, AF_PPPOX */ 
       unsigned int    sa_protocol;          /* protocol identifier */ 
       union{ 
               struct pppoe_addr       pppoe; 
       }sa_addr; 
}__attribute__ ((packed)); 


/*********************************************************************
 *
 * ioctl interface for defining forwarding of connections
 *
 ********************************************************************/

#define PPPOEIOCSFWD	_IOW(0xB1 ,0, size_t)
#define PPPOEIOCDFWD	_IO(0xB1 ,1)
/*#define PPPOEIOCGFWD	_IOWR(0xB1,2, size_t)*/

/* Codes to identify message types */
#define PADI_CODE	0x09
#define PADO_CODE	0x07
#define PADR_CODE	0x19
#define PADS_CODE	0x65
#define PADT_CODE	0xa7
struct pppoe_tag {
	__u16 tag_type;
	__u16 tag_len;
	char tag_data[0];
} __attribute ((packed));

/* Tag identifiers */
#define PTT_EOL		__constant_htons(0x0000)
#define PTT_SRV_NAME	__constant_htons(0x0101)
#define PTT_AC_NAME	__constant_htons(0x0102)
#define PTT_HOST_UNIQ	__constant_htons(0x0103)
#define PTT_AC_COOKIE	__constant_htons(0x0104)
#define PTT_VENDOR 	__constant_htons(0x0105)
#define PTT_RELAY_SID	__constant_htons(0x0110)
#define PTT_SRV_ERR     __constant_htons(0x0201)
#define PTT_SYS_ERR  	__constant_htons(0x0202)
#define PTT_GEN_ERR  	__constant_htons(0x0203)

struct pppoe_hdr {
#if defined(__LITTLE_ENDIAN_BITFIELD)
	__u8 ver : 4;
	__u8 type : 4;
#elif defined(__BIG_ENDIAN_BITFIELD)
	__u8 type : 4;
	__u8 ver : 4;
#else
#error	"Please fix <asm/byteorder.h>"
#endif
	__u8 code;
	__u16 sid;
	__u16 length;
	struct pppoe_tag tag[0];
} __attribute__ ((packed));

/* Length of entire PPPoE + PPP header */
#define PPPOE_SES_HLEN	8

#ifdef __KERNEL__
#include <linux/skbuff.h>

static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb)
{
	return (struct pppoe_hdr *)skb_network_header(skb);
}

struct pppoe_opt {
	struct net_device      *dev;	  /* device associated with socket*/
	int			ifindex;  /* ifindex of device associated with socket */
	struct pppoe_addr	pa;	  /* what this socket is bound to*/
	struct sockaddr_pppox	relay;	  /* what socket data will be
					     relayed to (PPPoE relaying) */
};

#include <net/sock.h>

struct pppox_sock {
	/* struct sock must be the first member of pppox_sock */
	struct sock		sk;
	struct ppp_channel	chan;
	struct pppox_sock	*next;	  /* for hash table */
	union {
		struct pppoe_opt pppoe;
	} proto;
	unsigned short		num;
};
#define pppoe_dev	proto.pppoe.dev
#define pppoe_ifindex	proto.pppoe.ifindex
#define pppoe_pa	proto.pppoe.pa
#define pppoe_relay	proto.pppoe.relay

static inline struct pppox_sock *pppox_sk(struct sock *sk)
{
	return (struct pppox_sock *)sk;
}

static inline struct sock *sk_pppox(struct pppox_sock *po)
{
	return (struct sock *)po;
}

struct module;

struct pppox_proto {
	int		(*create)(struct socket *sock);
	int		(*ioctl)(struct socket *sock, unsigned int cmd,
				 unsigned long arg);
	struct module	*owner;
};

extern int register_pppox_proto(int proto_num, struct pppox_proto *pp);
extern void unregister_pppox_proto(int proto_num);
extern void pppox_unbind_sock(struct sock *sk);/* delete ppp-channel binding */
extern int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);

/* PPPoX socket states */
enum {
    PPPOX_NONE		= 0,  /* initial state */
    PPPOX_CONNECTED	= 1,  /* connection established ==TCP_ESTABLISHED */
    PPPOX_BOUND		= 2,  /* bound to ppp device */
    PPPOX_RELAY		= 4,  /* forwarding is enabled */
    PPPOX_ZOMBIE	= 8,  /* dead, but still bound to ppp device */
    PPPOX_DEAD		= 16  /* dead, useless, please clean me up!*/
};

#endif /* __KERNEL__ */

#endif /* !(__LINUX_IF_PPPOX_H) */
Commit	Line	Data
1da177e4 LT	1	/***************************************************************************
	2	* Linux PPP over X - Generic PPP transport layer sockets
	3	* Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516)
	4	*
	5	* This file supplies definitions required by the PPP over Ethernet driver
	6	* (pppox.c). All version information wrt this file is located in pppox.c
	7	*
	8	* License:
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License
	11	* as published by the Free Software Foundation; either version
	12	* 2 of the License, or (at your option) any later version.
	13	*
	14	*/
	15
	16	#ifndef __LINUX_IF_PPPOX_H
	17	#define __LINUX_IF_PPPOX_H
	18
	19
	20	#include <asm/types.h>
	21	#include <asm/byteorder.h>
	22
	23	#ifdef __KERNEL__
	24	#include <linux/if_ether.h>
	25	#include <linux/if.h>
	26	#include <linux/netdevice.h>
	27	#include <asm/semaphore.h>
	28	#include <linux/ppp_channel.h>
	29	#endif /* __KERNEL__ */
	30
	31	/* For user-space programs to pick up these definitions
	32	* which they wouldn't get otherwise without defining __KERNEL__
	33	*/
	34	#ifndef AF_PPPOX
	35	#define AF_PPPOX 24
	36	#define PF_PPPOX AF_PPPOX
	37	#endif /* !(AF_PPPOX) */
	38
	39	/************************************************************************
	40	* PPPoE addressing definition
	41	*/
	42	typedef __u16 sid_t;
	43	struct pppoe_addr{
	44	sid_t sid; /* Session identifier */
	45	unsigned char remote[ETH_ALEN]; /* Remote address */
	46	char dev[IFNAMSIZ]; /* Local device to use */
	47	};
	48
	49	/************************************************************************
	50	* Protocols supported by AF_PPPOX
	51	*/
	52	#define PX_PROTO_OE 0 /* Currently just PPPoE */
	53	#define PX_MAX_PROTO 1
	54
	55	struct sockaddr_pppox {
	56	sa_family_t sa_family; /* address family, AF_PPPOX */
	57	unsigned int sa_protocol; /* protocol identifier */
	58	union{
	59	struct pppoe_addr pppoe;
	60	}sa_addr;
	61	}__attribute__ ((packed));
	62
	63
	64	/*********************************************************************
65	*
66	* ioctl interface for defining forwarding of connections
67	*
68	********************************************************************/
69
70	#define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t)
71	#define PPPOEIOCDFWD _IO(0xB1 ,1)
72	/#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)/
73
74	/* Codes to identify message types */
75	#define PADI_CODE 0x09
76	#define PADO_CODE 0x07
77	#define PADR_CODE 0x19
78	#define PADS_CODE 0x65
79	#define PADT_CODE 0xa7
80	struct pppoe_tag {
81	__u16 tag_type;
82	__u16 tag_len;
83	char tag_data[0];
84	} __attribute ((packed));
85
86	/* Tag identifiers */
87	#define PTT_EOL __constant_htons(0x0000)
88	#define PTT_SRV_NAME __constant_htons(0x0101)
89	#define PTT_AC_NAME __constant_htons(0x0102)
90	#define PTT_HOST_UNIQ __constant_htons(0x0103)
91	#define PTT_AC_COOKIE __constant_htons(0x0104)
92	#define PTT_VENDOR __constant_htons(0x0105)
93	#define PTT_RELAY_SID __constant_htons(0x0110)
94	#define PTT_SRV_ERR __constant_htons(0x0201)
95	#define PTT_SYS_ERR __constant_htons(0x0202)
96	#define PTT_GEN_ERR __constant_htons(0x0203)
97
98	struct pppoe_hdr {
99	#if defined(__LITTLE_ENDIAN_BITFIELD)
100	__u8 ver : 4;
101	__u8 type : 4;
102	#elif defined(__BIG_ENDIAN_BITFIELD)
103	__u8 type : 4;
104	__u8 ver : 4;
105	#else
106	#error "Please fix <asm/byteorder.h>"
107	#endif
108	__u8 code;
109	__u16 sid;
110	__u16 length;
111	struct pppoe_tag tag[0];
112	} __attribute__ ((packed));
113
516299d2 MM	114	/* Length of entire PPPoE + PPP header */
	115	#define PPPOE_SES_HLEN 8
	116
1da177e4	117	#ifdef __KERNEL__
797659fb ACM	118	#include <linux/skbuff.h>
	119
	120	static inline struct pppoe_hdr pppoe_hdr(const struct sk_buff skb)
	121	{
d56f90a7	122	return (struct pppoe_hdr *)skb_network_header(skb);
797659fb ACM	123	}
797659fb ACM	124
1da177e4 LT	125	struct pppoe_opt {
1da177e4 LT	126	struct net_device dev; / device associated with socket*/
6f30e186	127	int ifindex; /* ifindex of device associated with socket */
1da177e4 LT	128	struct pppoe_addr pa; /* what this socket is bound to*/
	129	struct sockaddr_pppox relay; /* what socket data will be
	130	relayed to (PPPoE relaying) */
	131	};
	132
	133	#include <net/sock.h>
	134
	135	struct pppox_sock {
	136	/* struct sock must be the first member of pppox_sock */
	137	struct sock sk;
	138	struct ppp_channel chan;
	139	struct pppox_sock next; / for hash table */
	140	union {
	141	struct pppoe_opt pppoe;
	142	} proto;
	143	unsigned short num;
	144	};
	145	#define pppoe_dev proto.pppoe.dev
6f30e186	146	#define pppoe_ifindex proto.pppoe.ifindex
1da177e4 LT	147	#define pppoe_pa proto.pppoe.pa
	148	#define pppoe_relay proto.pppoe.relay
	149
	150	static inline struct pppox_sock pppox_sk(struct sock sk)
	151	{
	152	return (struct pppox_sock *)sk;
	153	}
	154
	155	static inline struct sock sk_pppox(struct pppox_sock po)
	156	{
	157	return (struct sock *)po;
	158	}
	159
	160	struct module;
	161
	162	struct pppox_proto {
	163	int (create)(struct socket sock);
	164	int (ioctl)(struct socket sock, unsigned int cmd,
	165	unsigned long arg);
	166	struct module *owner;
	167	};
	168
	169	extern int register_pppox_proto(int proto_num, struct pppox_proto *pp);
	170	extern void unregister_pppox_proto(int proto_num);
	171	extern void pppox_unbind_sock(struct sock sk);/ delete ppp-channel binding */
17ba15fb	172	extern int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
1da177e4 LT	173
	174	/* PPPoX socket states */
	175	enum {
	176	PPPOX_NONE = 0, /* initial state */
	177	PPPOX_CONNECTED = 1, /* connection established ==TCP_ESTABLISHED */
	178	PPPOX_BOUND = 2, /* bound to ppp device */
	179	PPPOX_RELAY = 4, /* forwarding is enabled */
	180	PPPOX_ZOMBIE = 8, /* dead, but still bound to ppp device */
	181	PPPOX_DEAD = 16 /* dead, useless, please clean me up!*/
	182	};
	183
	184	#endif /* __KERNEL__ */
	185
	186	#endif /* !(__LINUX_IF_PPPOX_H) */