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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /*************************************************************************** |
| 2 | * Linux PPP over X - Generic PPP transport layer sockets |
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| 3 | * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516) |
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| 4 | * |
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| 5 | * This file supplies definitions required by the PPP over Ethernet driver |
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| 6 | * (pppox.c). All version information wrt this file is located in pppox.c |
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| 7 | * |
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| 8 | * License: |
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| 9 | * This program is free software; you can redistribute it and/or |
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| 10 | * modify it under the terms of the GNU General Public License |
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| 11 | * as published by the Free Software Foundation; either version |
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| 12 | * 2 of the License, or (at your option) any later version. |
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| 13 | * |
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| 14 | */ |
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| 15 | |||
| 16 | #ifndef __LINUX_IF_PPPOX_H |
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| 17 | #define __LINUX_IF_PPPOX_H |
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| 18 | |||
| 19 | |||
| 20 | #include <asm/types.h> |
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| 21 | #include <asm/byteorder.h> |
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| 22 | |||
| 23 | #ifdef __KERNEL__ |
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| 24 | #include <linux/if_ether.h> |
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| 25 | #include <linux/if.h> |
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| 26 | #include <linux/netdevice.h> |
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| 27 | #include <asm/semaphore.h> |
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| 28 | #include <linux/ppp_channel.h> |
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| 29 | #endif /* __KERNEL__ */ |
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| 30 | |||
| 31 | /* For user-space programs to pick up these definitions |
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| 32 | * which they wouldn't get otherwise without defining __KERNEL__ |
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| 33 | */ |
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| 34 | #ifndef AF_PPPOX |
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| 35 | #define AF_PPPOX 24 |
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| 36 | #define PF_PPPOX AF_PPPOX |
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| 37 | #endif /* !(AF_PPPOX) */ |
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| 38 | |||
| 39 | /************************************************************************ |
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| 40 | * PPPoE addressing definition |
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| 41 | */ |
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| 42 | typedef __u16 sid_t; |
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| 43 | struct pppoe_addr{ |
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| 44 | sid_t sid; /* Session identifier */ |
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| 45 | unsigned char remote[ETH_ALEN]; /* Remote address */ |
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| 46 | char dev[IFNAMSIZ]; /* Local device to use */ |
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| 47 | }; |
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| 48 | |||
| 49 | /************************************************************************ |
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| 50 | * Protocols supported by AF_PPPOX |
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| 51 | */ |
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| 52 | #define PX_PROTO_OE 0 /* Currently just PPPoE */ |
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| 53 | #define PX_MAX_PROTO 1 |
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| 54 | |||
| 55 | struct sockaddr_pppox { |
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| 56 | sa_family_t sa_family; /* address family, AF_PPPOX */ |
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| 57 | unsigned int sa_protocol; /* protocol identifier */ |
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| 58 | union{ |
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| 59 | struct pppoe_addr pppoe; |
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| 60 | }sa_addr; |
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| 61 | }__attribute__ ((packed)); |
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| 62 | |||
| 63 | |||
| 64 | /********************************************************************* |
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| 65 | * |
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| 66 | * ioctl interface for defining forwarding of connections |
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| 67 | * |
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| 68 | ********************************************************************/ |
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| 69 | |||
| 70 | #define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t) |
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| 71 | #define PPPOEIOCDFWD _IO(0xB1 ,1) |
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| 72 | /*#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)*/ |
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| 73 | |||
| 74 | /* Codes to identify message types */ |
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| 75 | #define PADI_CODE 0x09 |
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| 76 | #define PADO_CODE 0x07 |
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| 77 | #define PADR_CODE 0x19 |
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| 78 | #define PADS_CODE 0x65 |
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| 79 | #define PADT_CODE 0xa7 |
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| 80 | struct pppoe_tag { |
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| 81 | __u16 tag_type; |
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| 82 | __u16 tag_len; |
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| 83 | char tag_data[0]; |
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| 84 | } __attribute ((packed)); |
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| 85 | |||
| 86 | /* Tag identifiers */ |
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| 87 | #define PTT_EOL __constant_htons(0x0000) |
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| 88 | #define PTT_SRV_NAME __constant_htons(0x0101) |
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| 89 | #define PTT_AC_NAME __constant_htons(0x0102) |
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| 90 | #define PTT_HOST_UNIQ __constant_htons(0x0103) |
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| 91 | #define PTT_AC_COOKIE __constant_htons(0x0104) |
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| 92 | #define PTT_VENDOR __constant_htons(0x0105) |
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| 93 | #define PTT_RELAY_SID __constant_htons(0x0110) |
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| 94 | #define PTT_SRV_ERR __constant_htons(0x0201) |
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| 95 | #define PTT_SYS_ERR __constant_htons(0x0202) |
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| 96 | #define PTT_GEN_ERR __constant_htons(0x0203) |
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| 97 | |||
| 98 | struct pppoe_hdr { |
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| 99 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
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| 100 | __u8 ver : 4; |
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| 101 | __u8 type : 4; |
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| 102 | #elif defined(__BIG_ENDIAN_BITFIELD) |
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| 103 | __u8 type : 4; |
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| 104 | __u8 ver : 4; |
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| 105 | #else |
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| 106 | #error "Please fix <asm/byteorder.h>" |
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| 107 | #endif |
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| 108 | __u8 code; |
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| 109 | __u16 sid; |
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| 110 | __u16 length; |
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| 111 | struct pppoe_tag tag[0]; |
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| 112 | } __attribute__ ((packed)); |
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| 113 | |||
| 114 | #ifdef __KERNEL__ |
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| 115 | struct pppoe_opt { |
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| 116 | struct net_device *dev; /* device associated with socket*/ |
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| 117 | struct pppoe_addr pa; /* what this socket is bound to*/ |
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| 118 | struct sockaddr_pppox relay; /* what socket data will be |
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| 119 | relayed to (PPPoE relaying) */ |
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| 120 | }; |
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| 121 | |||
| 122 | struct pppox_opt { |
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| 123 | struct ppp_channel chan; |
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| 124 | struct sock *sk; |
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| 125 | struct pppox_opt *next; /* for hash table */ |
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| 126 | union { |
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| 127 | struct pppoe_opt pppoe; |
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| 128 | } proto; |
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| 129 | unsigned short num; |
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| 130 | }; |
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| 131 | #define pppoe_dev proto.pppoe.dev |
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| 132 | #define pppoe_pa proto.pppoe.pa |
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| 133 | #define pppoe_relay proto.pppoe.relay |
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| 134 | |||
| 135 | #define pppox_sk(__sk) ((struct pppox_opt *)(__sk)->sk_protinfo) |
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| 136 | |||
| 137 | struct module; |
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| 138 | |||
| 139 | struct pppox_proto { |
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| 140 | int (*create)(struct socket *sock); |
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| 141 | int (*ioctl)(struct socket *sock, unsigned int cmd, |
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| 142 | unsigned long arg); |
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| 143 | struct module *owner; |
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| 144 | }; |
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| 145 | |||
| 146 | extern int register_pppox_proto(int proto_num, struct pppox_proto *pp); |
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| 147 | extern void unregister_pppox_proto(int proto_num); |
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| 148 | extern void pppox_unbind_sock(struct sock *sk);/* delete ppp-channel binding */ |
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| 149 | extern int pppox_channel_ioctl(struct ppp_channel *pc, unsigned int cmd, |
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| 150 | unsigned long arg); |
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| 151 | |||
| 152 | /* PPPoX socket states */ |
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| 153 | enum { |
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| 154 | PPPOX_NONE = 0, /* initial state */ |
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| 155 | PPPOX_CONNECTED = 1, /* connection established ==TCP_ESTABLISHED */ |
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| 156 | PPPOX_BOUND = 2, /* bound to ppp device */ |
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| 157 | PPPOX_RELAY = 4, /* forwarding is enabled */ |
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| 158 | PPPOX_ZOMBIE = 8, /* dead, but still bound to ppp device */ |
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| 159 | PPPOX_DEAD = 16 /* dead, useless, please clean me up!*/ |
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| 160 | }; |
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| 161 | |||
| 162 | extern struct ppp_channel_ops pppoe_chan_ops; |
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| 163 | |||
| 164 | #endif /* __KERNEL__ */ |
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| 165 | |||
| 166 | #endif /* !(__LINUX_IF_PPPOX_H) */ |