1 /***************************************************************************
2 * Linux PPP over X - Generic PPP transport layer sockets
3 * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516)
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
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.
15 #ifndef __LINUX_IF_PPPOX_H
16 #define __LINUX_IF_PPPOX_H
19 #include <linux/netdevice.h>
20 #include <linux/ppp_channel.h>
21 #include <linux/skbuff.h>
22 #include <uapi/linux/if_pppox.h>
24 static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb)
26 return (struct pppoe_hdr *)skb_network_header(skb);
30 struct net_device *dev; /* device associated with socket*/
31 int ifindex; /* ifindex of device associated with socket */
32 struct pppoe_addr pa; /* what this socket is bound to*/
33 struct sockaddr_pppox relay; /* what socket data will be
34 relayed to (PPPoE relaying) */
38 struct pptp_addr src_addr;
39 struct pptp_addr dst_addr;
40 u32 ack_sent, ack_recv;
41 u32 seq_sent, seq_recv;
47 /* struct sock must be the first member of pppox_sock */
49 struct ppp_channel chan;
50 struct pppox_sock *next; /* for hash table */
52 struct pppoe_opt pppoe;
57 #define pppoe_dev proto.pppoe.dev
58 #define pppoe_ifindex proto.pppoe.ifindex
59 #define pppoe_pa proto.pppoe.pa
60 #define pppoe_relay proto.pppoe.relay
62 static inline struct pppox_sock *pppox_sk(struct sock *sk)
64 return (struct pppox_sock *)sk;
67 static inline struct sock *sk_pppox(struct pppox_sock *po)
69 return (struct sock *)po;
75 int (*create)(struct net *net, struct socket *sock);
76 int (*ioctl)(struct socket *sock, unsigned int cmd,
81 extern int register_pppox_proto(int proto_num, const struct pppox_proto *pp);
82 extern void unregister_pppox_proto(int proto_num);
83 extern void pppox_unbind_sock(struct sock *sk);/* delete ppp-channel binding */
84 extern int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
86 /* PPPoX socket states */
88 PPPOX_NONE = 0, /* initial state */
89 PPPOX_CONNECTED = 1, /* connection established ==TCP_ESTABLISHED */
90 PPPOX_BOUND = 2, /* bound to ppp device */
91 PPPOX_RELAY = 4, /* forwarding is enabled */
92 PPPOX_ZOMBIE = 8, /* dead, but still bound to ppp device */
93 PPPOX_DEAD = 16 /* dead, useless, please clean me up!*/
96 #endif /* !(__LINUX_IF_PPPOX_H) */