David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 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> |
Mikko Rapeli | b47b0cc | 2016-08-22 20:32:38 +0200 | [diff] [blame] | 24 | #include <linux/if.h> |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 25 | #include <linux/if_ether.h> |
| 26 | #include <linux/if_pppol2tp.h> |
Chia-chi Yeh | 5ebc1fc | 2009-05-08 04:02:40 +0800 | [diff] [blame] | 27 | #include <linux/if_pppolac.h> |
Chia-chi Yeh | 70511fd | 2009-06-12 01:09:30 +0800 | [diff] [blame] | 28 | #include <linux/if_pppopns.h> |
Mikko Rapeli | eafe921 | 2016-08-22 20:32:43 +0200 | [diff] [blame] | 29 | #include <linux/in.h> |
| 30 | #include <linux/in6.h> |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 31 | |
| 32 | /* For user-space programs to pick up these definitions |
| 33 | * which they wouldn't get otherwise without defining __KERNEL__ |
| 34 | */ |
| 35 | #ifndef AF_PPPOX |
| 36 | #define AF_PPPOX 24 |
| 37 | #define PF_PPPOX AF_PPPOX |
| 38 | #endif /* !(AF_PPPOX) */ |
| 39 | |
| 40 | /************************************************************************ |
| 41 | * PPPoE addressing definition |
| 42 | */ |
| 43 | typedef __be16 sid_t; |
| 44 | struct pppoe_addr { |
| 45 | sid_t sid; /* Session identifier */ |
| 46 | unsigned char remote[ETH_ALEN]; /* Remote address */ |
| 47 | char dev[IFNAMSIZ]; /* Local device to use */ |
| 48 | }; |
| 49 | |
| 50 | /************************************************************************ |
| 51 | * PPTP addressing definition |
| 52 | */ |
| 53 | struct pptp_addr { |
stephen hemminger | ebd8b93 | 2013-08-10 15:22:58 -0700 | [diff] [blame] | 54 | __u16 call_id; |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 55 | struct in_addr sin_addr; |
| 56 | }; |
| 57 | |
| 58 | /************************************************************************ |
| 59 | * Protocols supported by AF_PPPOX |
| 60 | */ |
| 61 | #define PX_PROTO_OE 0 /* Currently just PPPoE */ |
| 62 | #define PX_PROTO_OL2TP 1 /* Now L2TP also */ |
| 63 | #define PX_PROTO_PPTP 2 |
Chia-chi Yeh | 5ebc1fc | 2009-05-08 04:02:40 +0800 | [diff] [blame] | 64 | #define PX_PROTO_OLAC 3 |
Chia-chi Yeh | 70511fd | 2009-06-12 01:09:30 +0800 | [diff] [blame] | 65 | #define PX_PROTO_OPNS 4 |
| 66 | #define PX_MAX_PROTO 5 |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 67 | |
| 68 | struct sockaddr_pppox { |
| 69 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
| 70 | unsigned int sa_protocol; /* protocol identifier */ |
| 71 | union { |
| 72 | struct pppoe_addr pppoe; |
| 73 | struct pptp_addr pptp; |
| 74 | } sa_addr; |
| 75 | } __packed; |
| 76 | |
| 77 | /* The use of the above union isn't viable because the size of this |
| 78 | * struct must stay fixed over time -- applications use sizeof(struct |
| 79 | * sockaddr_pppox) to fill it. We use a protocol specific sockaddr |
| 80 | * type instead. |
| 81 | */ |
| 82 | struct sockaddr_pppol2tp { |
| 83 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
| 84 | unsigned int sa_protocol; /* protocol identifier */ |
| 85 | struct pppol2tp_addr pppol2tp; |
| 86 | } __packed; |
| 87 | |
| 88 | struct sockaddr_pppol2tpin6 { |
| 89 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
| 90 | unsigned int sa_protocol; /* protocol identifier */ |
| 91 | struct pppol2tpin6_addr pppol2tp; |
| 92 | } __packed; |
| 93 | |
| 94 | /* The L2TPv3 protocol changes tunnel and session ids from 16 to 32 |
| 95 | * bits. So we need a different sockaddr structure. |
| 96 | */ |
| 97 | struct sockaddr_pppol2tpv3 { |
| 98 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
| 99 | unsigned int sa_protocol; /* protocol identifier */ |
| 100 | struct pppol2tpv3_addr pppol2tp; |
| 101 | } __packed; |
| 102 | |
| 103 | struct sockaddr_pppol2tpv3in6 { |
| 104 | __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
| 105 | unsigned int sa_protocol; /* protocol identifier */ |
| 106 | struct pppol2tpv3in6_addr pppol2tp; |
| 107 | } __packed; |
| 108 | |
| 109 | /********************************************************************* |
| 110 | * |
| 111 | * ioctl interface for defining forwarding of connections |
| 112 | * |
| 113 | ********************************************************************/ |
| 114 | |
| 115 | #define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t) |
| 116 | #define PPPOEIOCDFWD _IO(0xB1 ,1) |
| 117 | /*#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)*/ |
| 118 | |
| 119 | /* Codes to identify message types */ |
| 120 | #define PADI_CODE 0x09 |
| 121 | #define PADO_CODE 0x07 |
| 122 | #define PADR_CODE 0x19 |
| 123 | #define PADS_CODE 0x65 |
| 124 | #define PADT_CODE 0xa7 |
| 125 | struct pppoe_tag { |
| 126 | __be16 tag_type; |
| 127 | __be16 tag_len; |
| 128 | char tag_data[0]; |
| 129 | } __attribute__ ((packed)); |
| 130 | |
| 131 | /* Tag identifiers */ |
| 132 | #define PTT_EOL __cpu_to_be16(0x0000) |
| 133 | #define PTT_SRV_NAME __cpu_to_be16(0x0101) |
| 134 | #define PTT_AC_NAME __cpu_to_be16(0x0102) |
| 135 | #define PTT_HOST_UNIQ __cpu_to_be16(0x0103) |
| 136 | #define PTT_AC_COOKIE __cpu_to_be16(0x0104) |
| 137 | #define PTT_VENDOR __cpu_to_be16(0x0105) |
| 138 | #define PTT_RELAY_SID __cpu_to_be16(0x0110) |
| 139 | #define PTT_SRV_ERR __cpu_to_be16(0x0201) |
| 140 | #define PTT_SYS_ERR __cpu_to_be16(0x0202) |
| 141 | #define PTT_GEN_ERR __cpu_to_be16(0x0203) |
| 142 | |
| 143 | struct pppoe_hdr { |
| 144 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 145 | __u8 type : 4; |
Changli Gao | b1a5a34 | 2013-06-29 00:15:51 +0800 | [diff] [blame] | 146 | __u8 ver : 4; |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 147 | #elif defined(__BIG_ENDIAN_BITFIELD) |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 148 | __u8 ver : 4; |
Changli Gao | b1a5a34 | 2013-06-29 00:15:51 +0800 | [diff] [blame] | 149 | __u8 type : 4; |
David Howells | 607ca46 | 2012-10-13 10:46:48 +0100 | [diff] [blame] | 150 | #else |
| 151 | #error "Please fix <asm/byteorder.h>" |
| 152 | #endif |
| 153 | __u8 code; |
| 154 | __be16 sid; |
| 155 | __be16 length; |
| 156 | struct pppoe_tag tag[0]; |
| 157 | } __packed; |
| 158 | |
| 159 | /* Length of entire PPPoE + PPP header */ |
| 160 | #define PPPOE_SES_HLEN 8 |
| 161 | |
| 162 | |
| 163 | #endif /* _UAPI__LINUX_IF_PPPOX_H */ |