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 <linux/types.h>
21 #include <asm/byteorder.h>
24 #include <linux/if_ether.h>
26 #include <linux/netdevice.h>
27 #include <linux/ppp_channel.h>
28 #endif /* __KERNEL__ */
29 #include <linux/if_pppol2tp.h>
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_PROTO_OL2TP 1 /* Now L2TP also */
54 #define PX_MAX_PROTO 2
56 struct sockaddr_pppox
{
57 sa_family_t sa_family
; /* address family, AF_PPPOX */
58 unsigned int sa_protocol
; /* protocol identifier */
60 struct pppoe_addr pppoe
;
62 }__attribute__ ((packed
));
64 /* The use of the above union isn't viable because the size of this
65 * struct must stay fixed over time -- applications use sizeof(struct
66 * sockaddr_pppox) to fill it. We use a protocol specific sockaddr
69 struct sockaddr_pppol2tp
{
70 sa_family_t sa_family
; /* address family, AF_PPPOX */
71 unsigned int sa_protocol
; /* protocol identifier */
72 struct pppol2tp_addr pppol2tp
;
73 }__attribute__ ((packed
));
75 /*********************************************************************
77 * ioctl interface for defining forwarding of connections
79 ********************************************************************/
81 #define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t)
82 #define PPPOEIOCDFWD _IO(0xB1 ,1)
83 /*#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)*/
85 /* Codes to identify message types */
86 #define PADI_CODE 0x09
87 #define PADO_CODE 0x07
88 #define PADR_CODE 0x19
89 #define PADS_CODE 0x65
90 #define PADT_CODE 0xa7
95 } __attribute ((packed
));
98 #define PTT_EOL __constant_htons(0x0000)
99 #define PTT_SRV_NAME __constant_htons(0x0101)
100 #define PTT_AC_NAME __constant_htons(0x0102)
101 #define PTT_HOST_UNIQ __constant_htons(0x0103)
102 #define PTT_AC_COOKIE __constant_htons(0x0104)
103 #define PTT_VENDOR __constant_htons(0x0105)
104 #define PTT_RELAY_SID __constant_htons(0x0110)
105 #define PTT_SRV_ERR __constant_htons(0x0201)
106 #define PTT_SYS_ERR __constant_htons(0x0202)
107 #define PTT_GEN_ERR __constant_htons(0x0203)
110 #if defined(__LITTLE_ENDIAN_BITFIELD)
113 #elif defined(__BIG_ENDIAN_BITFIELD)
117 #error "Please fix <asm/byteorder.h>"
122 struct pppoe_tag tag
[0];
123 } __attribute__ ((packed
));
125 /* Length of entire PPPoE + PPP header */
126 #define PPPOE_SES_HLEN 8
129 #include <linux/skbuff.h>
131 static inline struct pppoe_hdr
*pppoe_hdr(const struct sk_buff
*skb
)
133 return (struct pppoe_hdr
*)skb_network_header(skb
);
137 struct net_device
*dev
; /* device associated with socket*/
138 int ifindex
; /* ifindex of device associated with socket */
139 struct pppoe_addr pa
; /* what this socket is bound to*/
140 struct sockaddr_pppox relay
; /* what socket data will be
141 relayed to (PPPoE relaying) */
144 #include <net/sock.h>
147 /* struct sock must be the first member of pppox_sock */
149 struct ppp_channel chan
;
150 struct pppox_sock
*next
; /* for hash table */
152 struct pppoe_opt pppoe
;
156 #define pppoe_dev proto.pppoe.dev
157 #define pppoe_ifindex proto.pppoe.ifindex
158 #define pppoe_pa proto.pppoe.pa
159 #define pppoe_relay proto.pppoe.relay
161 static inline struct pppox_sock
*pppox_sk(struct sock
*sk
)
163 return (struct pppox_sock
*)sk
;
166 static inline struct sock
*sk_pppox(struct pppox_sock
*po
)
168 return (struct sock
*)po
;
174 int (*create
)(struct net
*net
, struct socket
*sock
);
175 int (*ioctl
)(struct socket
*sock
, unsigned int cmd
,
177 struct module
*owner
;
180 extern int register_pppox_proto(int proto_num
, struct pppox_proto
*pp
);
181 extern void unregister_pppox_proto(int proto_num
);
182 extern void pppox_unbind_sock(struct sock
*sk
);/* delete ppp-channel binding */
183 extern int pppox_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
);
185 /* PPPoX socket states */
187 PPPOX_NONE
= 0, /* initial state */
188 PPPOX_CONNECTED
= 1, /* connection established ==TCP_ESTABLISHED */
189 PPPOX_BOUND
= 2, /* bound to ppp device */
190 PPPOX_RELAY
= 4, /* forwarding is enabled */
191 PPPOX_ZOMBIE
= 8, /* dead, but still bound to ppp device */
192 PPPOX_DEAD
= 16 /* dead, useless, please clean me up!*/
195 #endif /* __KERNEL__ */
197 #endif /* !(__LINUX_IF_PPPOX_H) */
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