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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
607ca46e DH |
2 | /*************************************************************************** |
3 | * Linux PPP over X - Generic PPP transport layer sockets | |
4 | * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516) | |
5 | * | |
6 | * This file supplies definitions required by the PPP over Ethernet driver | |
7 | * (pppox.c). All version information wrt this file is located in pppox.c | |
8 | * | |
9 | * License: | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | */ | |
16 | ||
17 | #ifndef _UAPI__LINUX_IF_PPPOX_H | |
18 | #define _UAPI__LINUX_IF_PPPOX_H | |
19 | ||
20 | ||
21 | #include <linux/types.h> | |
22 | #include <asm/byteorder.h> | |
23 | ||
24 | #include <linux/socket.h> | |
b47b0cc7 | 25 | #include <linux/if.h> |
607ca46e DH |
26 | #include <linux/if_ether.h> |
27 | #include <linux/if_pppol2tp.h> | |
eafe9211 MR |
28 | #include <linux/in.h> |
29 | #include <linux/in6.h> | |
607ca46e DH |
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 __be16 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 | * PPTP addressing definition | |
51 | */ | |
52 | struct pptp_addr { | |
ebd8b934 | 53 | __u16 call_id; |
607ca46e DH |
54 | struct in_addr sin_addr; |
55 | }; | |
56 | ||
57 | /************************************************************************ | |
58 | * Protocols supported by AF_PPPOX | |
59 | */ | |
60 | #define PX_PROTO_OE 0 /* Currently just PPPoE */ | |
61 | #define PX_PROTO_OL2TP 1 /* Now L2TP also */ | |
62 | #define PX_PROTO_PPTP 2 | |
63 | #define PX_MAX_PROTO 3 | |
64 | ||
65 | struct sockaddr_pppox { | |
66 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ | |
67 | unsigned int sa_protocol; /* protocol identifier */ | |
68 | union { | |
69 | struct pppoe_addr pppoe; | |
70 | struct pptp_addr pptp; | |
71 | } sa_addr; | |
72 | } __packed; | |
73 | ||
74 | /* The use of the above union isn't viable because the size of this | |
75 | * struct must stay fixed over time -- applications use sizeof(struct | |
76 | * sockaddr_pppox) to fill it. We use a protocol specific sockaddr | |
77 | * type instead. | |
78 | */ | |
79 | struct sockaddr_pppol2tp { | |
80 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ | |
81 | unsigned int sa_protocol; /* protocol identifier */ | |
82 | struct pppol2tp_addr pppol2tp; | |
83 | } __packed; | |
84 | ||
85 | struct sockaddr_pppol2tpin6 { | |
86 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ | |
87 | unsigned int sa_protocol; /* protocol identifier */ | |
88 | struct pppol2tpin6_addr pppol2tp; | |
89 | } __packed; | |
90 | ||
91 | /* The L2TPv3 protocol changes tunnel and session ids from 16 to 32 | |
92 | * bits. So we need a different sockaddr structure. | |
93 | */ | |
94 | struct sockaddr_pppol2tpv3 { | |
95 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ | |
96 | unsigned int sa_protocol; /* protocol identifier */ | |
97 | struct pppol2tpv3_addr pppol2tp; | |
98 | } __packed; | |
99 | ||
100 | struct sockaddr_pppol2tpv3in6 { | |
101 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ | |
102 | unsigned int sa_protocol; /* protocol identifier */ | |
103 | struct pppol2tpv3in6_addr pppol2tp; | |
104 | } __packed; | |
105 | ||
106 | /********************************************************************* | |
107 | * | |
108 | * ioctl interface for defining forwarding of connections | |
109 | * | |
110 | ********************************************************************/ | |
111 | ||
112 | #define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t) | |
113 | #define PPPOEIOCDFWD _IO(0xB1 ,1) | |
114 | /*#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)*/ | |
115 | ||
116 | /* Codes to identify message types */ | |
117 | #define PADI_CODE 0x09 | |
118 | #define PADO_CODE 0x07 | |
119 | #define PADR_CODE 0x19 | |
120 | #define PADS_CODE 0x65 | |
121 | #define PADT_CODE 0xa7 | |
122 | struct pppoe_tag { | |
123 | __be16 tag_type; | |
124 | __be16 tag_len; | |
94dfc73e | 125 | char tag_data[]; |
607ca46e DH |
126 | } __attribute__ ((packed)); |
127 | ||
128 | /* Tag identifiers */ | |
129 | #define PTT_EOL __cpu_to_be16(0x0000) | |
130 | #define PTT_SRV_NAME __cpu_to_be16(0x0101) | |
131 | #define PTT_AC_NAME __cpu_to_be16(0x0102) | |
132 | #define PTT_HOST_UNIQ __cpu_to_be16(0x0103) | |
133 | #define PTT_AC_COOKIE __cpu_to_be16(0x0104) | |
134 | #define PTT_VENDOR __cpu_to_be16(0x0105) | |
135 | #define PTT_RELAY_SID __cpu_to_be16(0x0110) | |
136 | #define PTT_SRV_ERR __cpu_to_be16(0x0201) | |
137 | #define PTT_SYS_ERR __cpu_to_be16(0x0202) | |
138 | #define PTT_GEN_ERR __cpu_to_be16(0x0203) | |
139 | ||
140 | struct pppoe_hdr { | |
141 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
607ca46e | 142 | __u8 type : 4; |
b1a5a34b | 143 | __u8 ver : 4; |
607ca46e | 144 | #elif defined(__BIG_ENDIAN_BITFIELD) |
607ca46e | 145 | __u8 ver : 4; |
b1a5a34b | 146 | __u8 type : 4; |
607ca46e DH |
147 | #else |
148 | #error "Please fix <asm/byteorder.h>" | |
149 | #endif | |
150 | __u8 code; | |
151 | __be16 sid; | |
152 | __be16 length; | |
94dfc73e | 153 | struct pppoe_tag tag[]; |
607ca46e DH |
154 | } __packed; |
155 | ||
156 | /* Length of entire PPPoE + PPP header */ | |
157 | #define PPPOE_SES_HLEN 8 | |
158 | ||
159 | ||
160 | #endif /* _UAPI__LINUX_IF_PPPOX_H */ |