/*************************************************************************** * Linux PPP over X - Generic PPP transport layer sockets * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516) * * This file supplies definitions required by the PPP over Ethernet driver * (pppox.c). All version information wrt this file is located in pppox.c * * License: * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * */ #ifndef __LINUX_IF_PPPOX_H #define __LINUX_IF_PPPOX_H #include #include #include #ifdef __KERNEL__ #include #include #include #include #include #endif /* __KERNEL__ */ /* For user-space programs to pick up these definitions * which they wouldn't get otherwise without defining __KERNEL__ */ #ifndef AF_PPPOX #define AF_PPPOX 24 #define PF_PPPOX AF_PPPOX #endif /* !(AF_PPPOX) */ struct pptp_addr{ __u16 call_id; struct in_addr sin_addr; }; /************************************************************************ * Protocols supported by AF_PPPOX */ #define PX_PROTO_OE 0 /* Currently just PPPoE */ #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22) #define PX_PROTO_PPTP 1 #define PX_MAX_PROTO 2 #else #define PX_PROTO_PPTP 2 #define PX_MAX_PROTO 3 #endif struct sockaddr_pppox { sa_family_t sa_family; /* address family, AF_PPPOX */ unsigned int sa_protocol; /* protocol identifier */ union{ struct pptp_addr pptp; }sa_addr; }__attribute__ ((packed)); /********************************************************************* * * ioctl interface for defining forwarding of connections * ********************************************************************/ #define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t) #define PPPOEIOCDFWD _IO(0xB1 ,1) /*#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)*/ /* Codes to identify message types */ #define PADI_CODE 0x09 #define PADO_CODE 0x07 #define PADR_CODE 0x19 #define PADS_CODE 0x65 #define PADT_CODE 0xa7 struct pppoe_tag { __u16 tag_type; __u16 tag_len; char tag_data[0]; } __attribute ((packed)); /* Tag identifiers */ #define PTT_EOL __constant_htons(0x0000) #define PTT_SRV_NAME __constant_htons(0x0101) #define PTT_AC_NAME __constant_htons(0x0102) #define PTT_HOST_UNIQ __constant_htons(0x0103) #define PTT_AC_COOKIE __constant_htons(0x0104) #define PTT_VENDOR __constant_htons(0x0105) #define PTT_RELAY_SID __constant_htons(0x0110) #define PTT_SRV_ERR __constant_htons(0x0201) #define PTT_SYS_ERR __constant_htons(0x0202) #define PTT_GEN_ERR __constant_htons(0x0203) struct pppoe_hdr { #if defined(__LITTLE_ENDIAN_BITFIELD) __u8 ver : 4; __u8 type : 4; #elif defined(__BIG_ENDIAN_BITFIELD) __u8 type : 4; __u8 ver : 4; #else #error "Please fix " #endif __u8 code; __u16 sid; __u16 length; struct pppoe_tag tag[0]; } __attribute__ ((packed)); /* Socket options */ #define PPTP_SO_TIMEOUT 1 #ifdef __KERNEL__ #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0) struct pppoe_opt { struct net_device *dev; /* device associated with socket*/ struct pppoe_addr pa; /* what this socket is bound to*/ struct sockaddr_pppox relay; /* what socket data will be relayed to (PPPoE relaying) */ }; #endif struct pptp_opt { struct pptp_addr src_addr; struct pptp_addr dst_addr; int timeout; __u32 ack_sent, ack_recv; __u32 seq_sent, seq_recv; int ppp_flags; int flags; struct sk_buff_head skb_buf; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) struct tq_struct buf_work; //check bufferd packets work struct timer_list buf_timer; #else #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20) struct delayed_work buf_work; //check bufferd packets work #else struct work_struct buf_work; //check bufferd packets work #endif #endif struct gre_statistics *stat; spinlock_t xmit_lock; spinlock_t rcv_lock; }; #define PPTP_FLAG_PAUSE 0 #define PPTP_FLAG_PROC 1 #include struct pppox_sock { /* struct sock must be the first member of pppox_sock */ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) struct ppp_channel chan; struct sock *sk; #else struct sock sk; struct ppp_channel chan; #endif struct pppox_sock *next; /* for hash table */ union { struct pppoe_opt pppoe; struct pptp_opt pptp; } proto; unsigned short num; }; #define pppoe_dev proto.pppoe.dev #define pppoe_pa proto.pppoe.pa #define pppoe_relay proto.pppoe.relay static inline struct pppox_sock *pppox_sk(struct sock *sk) { #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) return (struct pppox_sock *)sk->protinfo.pppox; #else return (struct pppox_sock *)sk; #endif } static inline struct sock *sk_pppox(struct pppox_sock *po) { #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) return po->sk; #else return (struct sock *)po; #endif } struct module; struct pppox_proto { #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24) int (*create)(struct socket *sock); #else int (*create)(struct net *net, struct socket *sock); #endif int (*ioctl)(struct socket *sock, unsigned int cmd, unsigned long arg); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15) struct module *owner; #endif }; extern int register_pppox_proto(int proto_num, struct pppox_proto *pp); extern void unregister_pppox_proto(int proto_num); extern void pppox_unbind_sock(struct sock *sk);/* delete ppp-channel binding */ extern int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); /* PPPoX socket states */ enum { PPPOX_NONE = 0, /* initial state */ PPPOX_CONNECTED = 1, /* connection established ==TCP_ESTABLISHED */ PPPOX_BOUND = 2, /* bound to ppp device */ PPPOX_RELAY = 4, /* forwarding is enabled */ PPPOX_ZOMBIE = 8, /* dead, but still bound to ppp device */ PPPOX_DEAD = 16 /* dead, useless, please clean me up!*/ }; #endif /* __KERNEL__ */ #endif /* !(__LINUX_IF_PPPOX_H) */