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#ifndef __LINUX_IF_PPPOX_H 16#define __LINUX_IF_PPPOX_H 17 18#include <linux/if.h> 19#include <linux/netdevice.h> 20#include <linux/ppp_channel.h> 21#include <linux/skbuff.h> 22#include <linux/workqueue.h> 23#include <uapi/linux/if_pppox.h> 24 25static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb) 26{ 27 return (struct pppoe_hdr *)skb_network_header(skb); 28} 29 30struct pppoe_opt { 31 struct net_device *dev; /* device associated with socket*/ 32 int ifindex; /* ifindex of device associated with socket */ 33 struct pppoe_addr pa; /* what this socket is bound to*/ 34 struct sockaddr_pppox relay; /* what socket data will be 35 relayed to (PPPoE relaying) */ 36 struct work_struct padt_work;/* Work item for handling PADT */ 37}; 38 39struct pptp_opt { 40 struct pptp_addr src_addr; 41 struct pptp_addr dst_addr; 42 u32 ack_sent, ack_recv; 43 u32 seq_sent, seq_recv; 44 int ppp_flags; 45}; 46#include <net/sock.h> 47 48struct pppox_sock { 49 /* struct sock must be the first member of pppox_sock */ 50 struct sock sk; 51 struct ppp_channel chan; 52 struct pppox_sock *next; /* for hash table */ 53 union { 54 struct pppoe_opt pppoe; 55 struct pptp_opt pptp; 56 } proto; 57 __be16 num; 58}; 59#define pppoe_dev proto.pppoe.dev 60#define pppoe_ifindex proto.pppoe.ifindex 61#define pppoe_pa proto.pppoe.pa 62#define pppoe_relay proto.pppoe.relay 63 64static inline struct pppox_sock *pppox_sk(struct sock *sk) 65{ 66 return (struct pppox_sock *)sk; 67} 68 69static inline struct sock *sk_pppox(struct pppox_sock *po) 70{ 71 return (struct sock *)po; 72} 73 74struct module; 75 76struct pppox_proto { 77 int (*create)(struct net *net, struct socket *sock, int kern); 78 int (*ioctl)(struct socket *sock, unsigned int cmd, 79 unsigned long arg); 80 struct module *owner; 81}; 82 83extern int register_pppox_proto(int proto_num, const struct pppox_proto *pp); 84extern void unregister_pppox_proto(int proto_num); 85extern void pppox_unbind_sock(struct sock *sk);/* delete ppp-channel binding */ 86extern int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 87 88/* PPPoX socket states */ 89enum { 90 PPPOX_NONE = 0, /* initial state */ 91 PPPOX_CONNECTED = 1, /* connection established ==TCP_ESTABLISHED */ 92 PPPOX_BOUND = 2, /* bound to ppp device */ 93 PPPOX_RELAY = 4, /* forwarding is enabled */ 94 PPPOX_ZOMBIE = 8, /* dead, but still bound to ppp device */ 95 PPPOX_DEAD = 16 /* dead, useless, please clean me up!*/ 96}; 97 98#endif /* !(__LINUX_IF_PPPOX_H) */ 99