Merge remote-tracking branch 'omap_dss2/for-next'
[deliverable/linux.git] / include / uapi / linux / if_pppox.h
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 _UAPI__LINUX_IF_PPPOX_H
17 #define _UAPI__LINUX_IF_PPPOX_H
18
19
20 #include <linux/types.h>
21 #include <asm/byteorder.h>
22
23 #include <linux/socket.h>
24 #include <linux/if.h>
25 #include <linux/if_ether.h>
26 #include <linux/if_pppol2tp.h>
27 #include <linux/in.h>
28 #include <linux/in6.h>
29
30 /* For user-space programs to pick up these definitions
31 * which they wouldn't get otherwise without defining __KERNEL__
32 */
33 #ifndef AF_PPPOX
34 #define AF_PPPOX 24
35 #define PF_PPPOX AF_PPPOX
36 #endif /* !(AF_PPPOX) */
37
38 /************************************************************************
39 * PPPoE addressing definition
40 */
41 typedef __be16 sid_t;
42 struct pppoe_addr {
43 sid_t sid; /* Session identifier */
44 unsigned char remote[ETH_ALEN]; /* Remote address */
45 char dev[IFNAMSIZ]; /* Local device to use */
46 };
47
48 /************************************************************************
49 * PPTP addressing definition
50 */
51 struct pptp_addr {
52 __u16 call_id;
53 struct in_addr sin_addr;
54 };
55
56 /************************************************************************
57 * Protocols supported by AF_PPPOX
58 */
59 #define PX_PROTO_OE 0 /* Currently just PPPoE */
60 #define PX_PROTO_OL2TP 1 /* Now L2TP also */
61 #define PX_PROTO_PPTP 2
62 #define PX_MAX_PROTO 3
63
64 struct sockaddr_pppox {
65 __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
66 unsigned int sa_protocol; /* protocol identifier */
67 union {
68 struct pppoe_addr pppoe;
69 struct pptp_addr pptp;
70 } sa_addr;
71 } __packed;
72
73 /* The use of the above union isn't viable because the size of this
74 * struct must stay fixed over time -- applications use sizeof(struct
75 * sockaddr_pppox) to fill it. We use a protocol specific sockaddr
76 * type instead.
77 */
78 struct sockaddr_pppol2tp {
79 __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
80 unsigned int sa_protocol; /* protocol identifier */
81 struct pppol2tp_addr pppol2tp;
82 } __packed;
83
84 struct sockaddr_pppol2tpin6 {
85 __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
86 unsigned int sa_protocol; /* protocol identifier */
87 struct pppol2tpin6_addr pppol2tp;
88 } __packed;
89
90 /* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
91 * bits. So we need a different sockaddr structure.
92 */
93 struct sockaddr_pppol2tpv3 {
94 __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
95 unsigned int sa_protocol; /* protocol identifier */
96 struct pppol2tpv3_addr pppol2tp;
97 } __packed;
98
99 struct sockaddr_pppol2tpv3in6 {
100 __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
101 unsigned int sa_protocol; /* protocol identifier */
102 struct pppol2tpv3in6_addr pppol2tp;
103 } __packed;
104
105 /*********************************************************************
106 *
107 * ioctl interface for defining forwarding of connections
108 *
109 ********************************************************************/
110
111 #define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t)
112 #define PPPOEIOCDFWD _IO(0xB1 ,1)
113 /*#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)*/
114
115 /* Codes to identify message types */
116 #define PADI_CODE 0x09
117 #define PADO_CODE 0x07
118 #define PADR_CODE 0x19
119 #define PADS_CODE 0x65
120 #define PADT_CODE 0xa7
121 struct pppoe_tag {
122 __be16 tag_type;
123 __be16 tag_len;
124 char tag_data[0];
125 } __attribute__ ((packed));
126
127 /* Tag identifiers */
128 #define PTT_EOL __cpu_to_be16(0x0000)
129 #define PTT_SRV_NAME __cpu_to_be16(0x0101)
130 #define PTT_AC_NAME __cpu_to_be16(0x0102)
131 #define PTT_HOST_UNIQ __cpu_to_be16(0x0103)
132 #define PTT_AC_COOKIE __cpu_to_be16(0x0104)
133 #define PTT_VENDOR __cpu_to_be16(0x0105)
134 #define PTT_RELAY_SID __cpu_to_be16(0x0110)
135 #define PTT_SRV_ERR __cpu_to_be16(0x0201)
136 #define PTT_SYS_ERR __cpu_to_be16(0x0202)
137 #define PTT_GEN_ERR __cpu_to_be16(0x0203)
138
139 struct pppoe_hdr {
140 #if defined(__LITTLE_ENDIAN_BITFIELD)
141 __u8 type : 4;
142 __u8 ver : 4;
143 #elif defined(__BIG_ENDIAN_BITFIELD)
144 __u8 ver : 4;
145 __u8 type : 4;
146 #else
147 #error "Please fix <asm/byteorder.h>"
148 #endif
149 __u8 code;
150 __be16 sid;
151 __be16 length;
152 struct pppoe_tag tag[0];
153 } __packed;
154
155 /* Length of entire PPPoE + PPP header */
156 #define PPPOE_SES_HLEN 8
157
158
159 #endif /* _UAPI__LINUX_IF_PPPOX_H */
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