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
228
229
230
231
232
233
234
235
236
|
/*
* @(#) jig to exercise a UML/FreeSWAN kernel with two interfaces
*
* Copyright (C) 2001 Michael Richardson <mcr@freeswan.org>
*
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* RCSID $Id: nethub.h,v 1.7 2003/04/02 20:25:53 mcr Exp $
*
* @(#) based upon uml_router from User-Mode-Linux tools package
*
*/
#ifndef _NETHUB_H_
#include <net/ethernet.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/queue.h>
#include <netinet/in.h>
#include "pcap.h"
enum request_type { REQ_NEW_CONTROL };
struct request_v0 {
enum request_type type;
union {
struct {
unsigned char addr[ETH_ALEN];
struct sockaddr_un name;
} new_control;
} u;
};
#define SWITCH_MAGIC 0xfeedface
struct request_v1 {
unsigned long magic;
enum request_type type;
union {
struct {
unsigned char addr[ETH_ALEN];
struct sockaddr_un name;
} new_control;
} u;
};
struct request_v2 {
unsigned long magic;
int version;
enum request_type type;
struct sockaddr_un sock;
};
struct reply_v2 {
unsigned char mac[ETH_ALEN];
struct sockaddr_un sock;
};
struct request_v3 {
unsigned long magic;
int version;
enum request_type type;
struct sockaddr_un sock;
};
union request {
struct request_v0 v0;
struct request_v1 v1;
struct request_v2 v2;
struct request_v3 v3;
};
#define HASH_SIZE 128
#define HASH_MOD 11
struct port;
struct nethub {
TAILQ_ENTRY(nethub) nh_link;
TAILQ_HEAD(,port) nh_ports;
char *nh_name;
unsigned char nh_defaultether[ETH_ALEN];
struct in_addr nh_defaultgate;
int nh_allarp;
char *nh_outputFile;
pcap_dumper_t *nh_output;
int nh_rate;
char *nh_inputFile;
pcap_t *nh_input;
int nh_hub;
int nh_compat_v0;
char *socket_dir;
char *pid_file_name;
char *ctl_socket_name_env; /* do not free this one */
char *ctl_socket_name;
int ctl_listen_fd;
char *data_socket_name_env; /* do not free this one */
char *data_socket_name;
struct sockaddr_un data_sun;
int data_fd;
int tap_fd;
struct hash_entry *h[HASH_SIZE];
};
#define CMDBUF_LEN 256
struct netjig_state {
int done;
int debug;
int verbose;
int waitplay;
char *socketbasedir;
char *startup;
char *playprivatefile;
char *recordprivatefile;
char *playpublicfile;
char *recordpublicfile;
int arpreply;
int cmdproto;
int forcetick; /* if set to 1, then a packet will be sent out */
int packetrate; /* how many miliseconds between packets */
FILE *cmdproto_out;
int exitonempty;
TAILQ_HEAD(,nethub) switches;
/* stuff to keep track of the sources of input */
struct pollfd *fds; /* array of input sources */
int nfds; /* number of relevant entries */
int max_fds; /* current size of the array */
/* poll(2) doesn't provide a very useful interface to figure out what
* fd belongs to what event, and searching through stuff sucks, we
* we keep a mapping of fd# -> poll descriptor entry. We then walk through
* the set of possible inputs, (in the appropriate priority order) and
* use this array to map to an entry in fds[] to see if this input has
* activity.
*/
int *fd_array;
int fd_array_size; /* so we can grow it in add_fd() */
/* keep track of curtent input buffer, since we predict that eventuallyu
* command sizes will grow such that they do not always fit into a single
* read(2), or that multiple commands may get coalesced into a single buffer.
*/
char cmdbuf[CMDBUF_LEN];
int cmdloc;
int cmdskip;
int cmdlaststat; /* 0= success */
};
struct packet {
struct {
unsigned char dest[6];
unsigned char src[6];
u_int16_t proto;
} header;
unsigned char data[1500];
};
/* in nethub.c */
extern struct nethub *init_nethub(struct netjig_state *ns,
char *switchname,
char *data_socket, char *ctl_socket,
int compat_v0);
extern void bind_sockets(struct nethub *nh);
extern void cleanup_nh(struct nethub *nh);
extern struct nethub *find_nethubbyname(struct netjig_state *ns, char *name);
extern void add_fd(struct netjig_state *ns, int fd);
extern void remove_fd(struct netjig_state *ns, int fd);
extern void close_descriptor(struct netjig_state *ns,
struct nethub *nh,
int fd);
#define xmalloc(X) xmalloc1((X), __FILE__, __LINE__)
#ifdef NETDISSECT
#include "netdissect.h"
extern struct netdissect_options gndo;
extern int tcpdump_print;
#endif
#define _NETHUB_H_
#endif /* _NETHUB_H_ */
/*
* $Log: nethub.h,v $
* Revision 1.7 2003/04/02 20:25:53 mcr
* quiet down uml_netjig unless -v or $NETJIGVERBOSE is set.
*
* Revision 1.6 2003/04/02 02:15:59 mcr
* added option to set packet replay rate.
*
* Revision 1.5 2002/11/07 22:18:09 mcr
* use proper #define for ethernet length.
*
* Revision 1.4 2002/08/30 01:37:35 mcr
* double buffered the poll(2) structures so that changes during
* use would not affect the system.
* changed fd_array to be indirect references so that the poll(2)
* loop could more easily double buffer the structures.
*
* Revision 1.3 2002/07/21 16:40:34 mcr
* clean pid file upon exit, so that directories can be removed
* properly. Free up memory that was allocated for the hub.
* switch to using mkstemp instead of tmpname for directory
* creation - append .d to the generated name. (still not race safe!)
* when freeing the hubs, take care not to reference free'ed memory.
*
* Revision 1.2 2002/07/17 03:59:46 mcr
* debugged uml_switch - added "-name" option.
*
* Revision 1.1 2002/07/14 02:48:48 mcr
* first version of merged uml_switch/uml_netjig that compiles.
*
*
* Local variables:
* c-file-style: "linux"
* c-basic-offset: 8
* End:
*
*/
|
