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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 <uapi/linux/if_pppox.h> |
23 | |
24 | static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb) |
25 | { |
26 | return (struct pppoe_hdr *)skb_network_header(skb); |
27 | } |
28 | |
29 | struct pppoe_opt { |
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) */ |
35 | }; |
36 | |
37 | struct pptp_opt { |
38 | struct pptp_addr src_addr; |
39 | struct pptp_addr dst_addr; |
40 | u32 ack_sent, ack_recv; |
41 | u32 seq_sent, seq_recv; |
42 | int ppp_flags; |
43 | }; |
44 | #include <net/sock.h> |
45 | |
46 | struct pppox_sock { |
47 | /* struct sock must be the first member of pppox_sock */ |
48 | struct sock sk; |
49 | struct ppp_channel chan; |
50 | struct pppox_sock *next; /* for hash table */ |
51 | union { |
52 | struct pppoe_opt pppoe; |
53 | struct pptp_opt pptp; |
54 | } proto; |
55 | __be16 num; |
56 | }; |
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 |
61 | |
62 | static inline struct pppox_sock *pppox_sk(struct sock *sk) |
63 | { |
64 | return (struct pppox_sock *)sk; |
65 | } |
66 | |
67 | static inline struct sock *sk_pppox(struct pppox_sock *po) |
68 | { |
69 | return (struct sock *)po; |
70 | } |
71 | |
72 | struct module; |
73 | |
74 | struct pppox_proto { |
75 | int (*create)(struct net *net, struct socket *sock); |
76 | int (*ioctl)(struct socket *sock, unsigned int cmd, |
77 | unsigned long arg); |
78 | struct module *owner; |
79 | }; |
80 | |
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); |
85 | |
86 | /* PPPoX socket states */ |
87 | enum { |
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!*/ |
94 | }; |
95 | |
96 | #endif /* !(__LINUX_IF_PPPOX_H) */ |
97 |
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