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
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Data Link API - Open/Setup
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/stream.h>
#include <sys/stropts.h>
#include <sys/dlpi.h>
#include <errno.h>
#include <dluser.h>
#include <dlhdr.h>
static struct dl_descriptor *_dlfds;
static int _nfds;
extern struct dl_address *dl_mkaddress();
int
dl_open(char *dev, int mode, dl_info_t *info)
{
int fd;
if ((fd = open(dev, mode)) < 0) {
return (-1);
}
ioctl(fd, I_SRDOPT, RMSGD);
/* now have open device - do inforequest */
if (info == NULL)
return (dl_sync(fd));
else if (dl_info(fd, info) < 0)
return (-1);
else
return (fd);
}
/* this actually does the work that dl_open needs done also */
int
dl_sync(int fd)
{
struct strbuf ctl;
dl_info_req_t ireq;
dl_info_ack_t *iack;
char buff[sizeof (dl_info_ack_t)+64];
struct dl_descriptor *dl;
int flags;
/* first time? */
if (_nfds == 0) {
_nfds = ulimit(4, 0); /* number of possible file desc. */
_dlfds = (struct dl_descriptor *)malloc(_nfds *
sizeof (struct dl_descriptor));
if (_dlfds == NULL)
return (-1);
}
dl = &_dlfds[fd];
dl->openflag = 1;
/* get the info_ack data */
ctl.maxlen = ctl.len = sizeof (ireq);
ctl.buf = (char *)&ireq;
ireq.dl_primitive = DL_INFO_REQ;
if (putmsg(fd, &ctl, NULL, 0) < 0) {
close(fd);
return (-1);
}
iack = (dl_info_ack_t *)buff;
ctl.maxlen = sizeof (buff);
ctl.len = 0;
ctl.buf = (char *)iack;
flags = 0;
if (getmsg(fd, &ctl, NULL, &flags) < 0) {
close(fd);
return (-1);
}
/* now have all in place */
if (iack->dl_primitive != DL_INFO_ACK) {
close(fd);
return (-1);
}
/* now pick out the relevant information and fake the rest */
dl->info.state = iack->dl_current_state;
dl->info.max_lsdu = iack->dl_max_sdu;
dl->info.min_lsdu = iack->dl_min_sdu;
dl->info.addr_len = iack->dl_addr_length;
dl->info.mac_type = iack->dl_mac_type;
dl->info.class = iack->dl_service_mode;
dl->info.style = iack->dl_provider_style;
#if defined(DLPI_1)
dl->info.address = (struct dl_address *)NULL;
dl->info.broadcast = (struct dl_address *)NULL;
#else
dl->info.version = iack->dl_version;
dl->info.sap_len = iack->dl_sap_length;
dl->info.address = dl_mkaddress(fd, buff+iack->dl_addr_offset,
0, NULL, NULL);
dl->info.broadcast = dl_mkaddress(fd,
buff+iack->dl_brdcst_addr_offset, 0, NULL, NULL);
#endif
return (fd);
}
struct dl_descriptor *
_getdesc(int fd)
{
struct dl_descriptor *dl;
if (_nfds > 0 && fd < _nfds) {
dl = &_dlfds[fd];
if (dl->openflag)
return (dl);
}
return (NULL);
}
int
dl_error(int fd)
{
struct dl_descriptor *dl;
if (_nfds > 0 && fd < _nfds) {
dl = &_dlfds[fd];
if (dl->openflag) {
return (dl->error);
}
}
errno = EBADF;
return (DLSYSERR);
}
|
