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
|
/* NetBSD */
/*
* Copyright (c) 1999 Darrin B. Jewell
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Darrin B. Jewell
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/exec.h>
#include <sys/lkm.h>
#include <sys/tty.h>
#include <sys/ttycom.h>
MOD_MISC("mppe");
extern struct compressor ppp_mppe;
extern struct compressor *ppp_compressors[];
extern int mppe_in_use;
int mppe_lkmentry __P((struct lkm_table *, int, int));
int mppe_lkm_load __P((struct lkm_table *, int));
int
mppe_lkm_load(lkmtp, cmd)
struct lkm_table *lkmtp;
int cmd;
{
int i;
for(i=0;i<7;i++) {
if (ppp_compressors[i] == NULL) {
ppp_compressors[i] = &ppp_mppe;
ppp_compressors[i+1] = NULL;
break;
}
}
if (i==7) {
printf("MPPE: no free compressor slots\n");
return ENODEV;
}
printf("MPPE: loaded into ppp at slot %d\n",i);
return 0;
}
int
mppe_lkm_unload(lkmtp, cmd)
struct lkm_table *lkmtp;
int cmd;
{
int i;
if (mppe_in_use) {
printf("MPPE: cannot unload lkm while in use (count=%d)\n",
mppe_in_use);
return EBUSY;
}
for(i=0;ppp_compressors[i];i++) {
if (ppp_compressors[i] == &ppp_mppe) break;
}
if (ppp_compressors[i] == NULL) {
printf("MPPE: cannot find mppe in ppp compressor slots\n");
return ENODEV;
}
printf("MPPE: unloaded from ppp at slot %d\n",i);
do {
ppp_compressors[i] = ppp_compressors[i+1];
} while(ppp_compressors[i++]);
return 0;
}
int
mppe_lkm_stat(lkmtp, cmd)
struct lkm_table *lkmtp;
int cmd;
{
printf("MPPE: use count %d\n",mppe_in_use);
return 0;
}
int
mppe_lkmentry(lkmtp, cmd, ver)
struct lkm_table *lkmtp;
int cmd, ver;
{
DISPATCH(lkmtp, cmd, ver, mppe_lkm_load,mppe_lkm_unload,mppe_lkm_stat);
}
|
