1 /***************************************************************************
2 * Linux PPP over X - Generic PPP transport layer sockets
3 * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516)
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
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.
16 #ifndef __LINUX_IF_PPPOX_H
17 #define __LINUX_IF_PPPOX_H
20 #include <asm/types.h>
21 #include <asm/byteorder.h>
24 #include <linux/if_ether.h>
26 #include <linux/netdevice.h>
27 #include <asm/semaphore.h>
28 #include <linux/ppp_channel.h>
29 #endif /* __KERNEL__ */
31 /* For user-space programs to pick up these definitions
32 * which they wouldn't get otherwise without defining __KERNEL__
36 #define PF_PPPOX AF_PPPOX
37 #endif /* !(AF_PPPOX) */
39 /************************************************************************
40 * PPPoE addressing definition
44 sid_t sid; /* Session identifier */
45 unsigned char remote[ETH_ALEN]; /* Remote address */
46 char dev[IFNAMSIZ]; /* Local device to use */
49 /************************************************************************
50 * Protocols supported by AF_PPPOX
52 #define PX_PROTO_OE 0 /* Currently just PPPoE */
53 #define PX_MAX_PROTO 1
55 struct sockaddr_pppox {
56 sa_family_t sa_family; /* address family, AF_PPPOX */
57 unsigned int sa_protocol; /* protocol identifier */
59 struct pppoe_addr pppoe;
61 }__attribute__ ((packed));
64 /*********************************************************************
66 * ioctl interface for defining forwarding of connections
68 ********************************************************************/
70 #define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t)
71 #define PPPOEIOCDFWD _IO(0xB1 ,1)
72 /*#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)*/
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
84 } __attribute ((packed));
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)
99 #if defined(__LITTLE_ENDIAN_BITFIELD)
102 #elif defined(__BIG_ENDIAN_BITFIELD)
106 #error "Please fix <asm/byteorder.h>"
111 struct pppoe_tag tag[0];
112 } __attribute__ ((packed));
114 /* Length of entire PPPoE + PPP header */
115 #define PPPOE_SES_HLEN 8
118 #include <linux/skbuff.h>
120 static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb)
122 return (struct pppoe_hdr *)skb_network_header(skb);
126 struct net_device *dev; /* device associated with socket*/
127 int ifindex; /* ifindex of device associated with socket */
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) */
133 #include <net/sock.h>
136 /* struct sock must be the first member of pppox_sock */
138 struct ppp_channel chan;
139 struct pppox_sock *next; /* for hash table */
141 struct pppoe_opt pppoe;
145 #define pppoe_dev proto.pppoe.dev
146 #define pppoe_ifindex proto.pppoe.ifindex
147 #define pppoe_pa proto.pppoe.pa
148 #define pppoe_relay proto.pppoe.relay
150 static inline struct pppox_sock *pppox_sk(struct sock *sk)
152 return (struct pppox_sock *)sk;
155 static inline struct sock *sk_pppox(struct pppox_sock *po)
157 return (struct sock *)po;
163 int (*create)(struct socket *sock);
164 int (*ioctl)(struct socket *sock, unsigned int cmd,
166 struct module *owner;
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 */
172 extern int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
174 /* PPPoX socket states */
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!*/
184 #endif /* __KERNEL__ */
186 #endif /* !(__LINUX_IF_PPPOX_H) */