1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/***************************************************************************
* 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 <asm/types.h>
#include <asm/byteorder.h>
#include <linux/version.h>
#ifdef __KERNEL__
#include <linux/in.h>
#include <linux/if_ether.h>
#include <linux/if.h>
#include <linux/netdevice.h>
#include <linux/ppp_channel.h>
#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 <asm/byteorder.h>"
#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 <net/sock.h>
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) */
|
