aboutsummaryrefslogtreecommitdiffstats
path: root/package/broadcom-wl/src/wlc/ioctl.c
blob: 9ae5d7306468cdf2500b3ed913c9ffb68046635d (plain)
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
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
/*
 * Wireless network adapter utilities
 *
 * Copyright 2006, Broadcom Corporation
 * All Rights Reserved.
 * 
 * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
 * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
 * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
 *
 */
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <linux/types.h>

typedef u_int64_t u64;
typedef u_int32_t u32;
typedef u_int16_t u16;
typedef u_int8_t u8;
#include <linux/sockios.h>
#include <linux/ethtool.h>

#include <typedefs.h>
#include <wlioctl.h>
#include <bcmutils.h>
#include <wlutils.h>

int
wl_ioctl(char *name, int cmd, void *buf, int len)
{
	struct ifreq ifr;
	wl_ioctl_t ioc;
	int ret = 0;
	int s;

	/* open socket to kernel */
	if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
		perror("socket");
		return errno;
	}

	/* do it */
	ioc.cmd = cmd;
	ioc.buf = buf;
	ioc.len = len;
	strncpy(ifr.ifr_name, name, IFNAMSIZ);
	ifr.ifr_data = (caddr_t) &ioc;
	if ((ret = ioctl(s, SIOCDEVPRIVATE, &ifr)) < 0)

	/* cleanup */
	close(s);
	return ret;
}

static inline int
wl_get_dev_type(char *name, void *buf, int len)
{
	int s;
	int ret;
	struct ifreq ifr;
	struct ethtool_drvinfo info;

	/* open socket to kernel */
	if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
		perror("socket");
		return -1;
	}

	/* get device type */
	memset(&info, 0, sizeof(info));
	info.cmd = ETHTOOL_GDRVINFO;
	ifr.ifr_data = (caddr_t)&info;
	strncpy(ifr.ifr_name, name, IFNAMSIZ);
	if ((ret = ioctl(s, SIOCETHTOOL, &ifr)) < 0) {
		*(char *)buf = '\0';
	} else
		strncpy(buf, info.driver, len);

	close(s);
	return ret;
}

int
wl_probe(char *name)
{
	int ret, val;
	char buf[3];
	if ((ret = wl_get_dev_type(name, buf, 3)) < 0)
		return ret;
	/* Check interface */
	if (strncmp(buf, "wl", 2))
		return -1;
	if ((ret = wl_ioctl(name, WLC_GET_VERSION, &val, sizeof(val))))
		return ret;
	if (val > WLC_IOCTL_VERSION)
		return -1;

	return ret;
}

static int
wl_iovar_getbuf(char *ifname, char *iovar, void *param, int paramlen, void *bufptr, int buflen)
{
	int err;
	uint namelen;
	uint iolen;

	namelen = strlen(iovar) + 1;	 /* length of iovar name plus null */
	iolen = namelen + paramlen;

	/* check for overflow */
	if (iolen > buflen)
		return (BCME_BUFTOOSHORT);

	memcpy(bufptr, iovar, namelen);	/* copy iovar name including null */
	memcpy((int8*)bufptr + namelen, param, paramlen);

	err = wl_ioctl(ifname, WLC_GET_VAR, bufptr, buflen);

	return (err);
}

static int
wl_iovar_setbuf(char *ifname, char *iovar, void *param, int paramlen, void *bufptr, int buflen)
{
	uint namelen;
	uint iolen;

	namelen = strlen(iovar) + 1;	 /* length of iovar name plus null */
	iolen = namelen + paramlen;

	/* check for overflow */
	if (iolen > buflen)
		return (BCME_BUFTOOSHORT);

	memcpy(bufptr, iovar, namelen);	/* copy iovar name including null */
	memcpy((int8*)bufptr + namelen, param, paramlen);

	return wl_ioctl(ifname, WLC_SET_VAR, bufptr, iolen);
}

int
wl_iovar_set(char *ifname, char *iovar, void *param, int paramlen)
{
	char smbuf[WLC_IOCTL_SMLEN];

	return wl_iovar_setbuf(ifname, iovar, param, paramlen, smbuf, sizeof(smbuf));
}

int
wl_iovar_get(char *ifname, char *iovar, void *bufptr, int buflen)
{
	char smbuf[WLC_IOCTL_SMLEN];
	int ret;

	/* use the return buffer if it is bigger than what we have on the stack */
	if (buflen > sizeof(smbuf)) {
		ret = wl_iovar_getbuf(ifname, iovar, NULL, 0, bufptr, buflen);
	} else {
		ret = wl_iovar_getbuf(ifname, iovar, NULL, 0, smbuf, sizeof(smbuf));
		if (ret == 0)
			memcpy(bufptr, smbuf, buflen);
	}

	return ret;
}


/*
 * format a bsscfg indexed iovar buffer
 */
static int
wl_bssiovar_mkbuf(char *iovar, int bssidx, void *param, int paramlen, void *bufptr, int buflen,
                  int *plen)
{
	char *prefix = "bsscfg:";
	int8* p;
	uint prefixlen;
	uint namelen;
	uint iolen;

	prefixlen = strlen(prefix);	/* length of bsscfg prefix */
	namelen = strlen(iovar) + 1;	/* length of iovar name + null */
	iolen = prefixlen + namelen + sizeof(int) + paramlen;

	/* check for overflow */
	if (buflen < 0 || iolen > (uint)buflen) {
		*plen = 0;
		return BCME_BUFTOOSHORT;
	}

	p = (int8*)bufptr;

	/* copy prefix, no null */
	memcpy(p, prefix, prefixlen);
	p += prefixlen;

	/* copy iovar name including null */
	memcpy(p, iovar, namelen);
	p += namelen;

	/* bss config index as first param */
	memcpy(p, &bssidx, sizeof(int32));
	p += sizeof(int32);

	/* parameter buffer follows */
	if (paramlen)
		memcpy(p, param, paramlen);

	*plen = iolen;
	return 0;
}

/*
 * set named & bss indexed driver variable to buffer value
 */
static int
wl_bssiovar_setbuf(char *ifname, char *iovar, int bssidx, void *param, int paramlen, void *bufptr,
                   int buflen)
{
	int err;
	int iolen;

	err = wl_bssiovar_mkbuf(iovar, bssidx, param, paramlen, bufptr, buflen, &iolen);
	if (err)
		return err;

	return wl_ioctl(ifname, WLC_SET_VAR, bufptr, iolen);
}

/*
 * get named & bss indexed driver variable buffer value
 */
static int
wl_bssiovar_getbuf(char *ifname, char *iovar, int bssidx, void *param, int paramlen, void *bufptr,
                   int buflen)
{
	int err;
	int iolen;

	err = wl_bssiovar_mkbuf(iovar, bssidx, param, paramlen, bufptr, buflen, &iolen);
	if (err)
		return err;

	return wl_ioctl(ifname, WLC_GET_VAR, bufptr, buflen);
}

/*
 * set named & bss indexed driver variable to buffer value
 */
int
wl_bssiovar_set(char *ifname, char *iovar, int bssidx, void *param, int paramlen)
{
	char smbuf[WLC_IOCTL_SMLEN];

	return wl_bssiovar_setbuf(ifname, iovar, bssidx, param, paramlen, smbuf, sizeof(smbuf));
}

/*
 * get named & bss indexed driver variable buffer value
 */
int
wl_bssiovar_get(char *ifname, char *iovar, int bssidx, void *outbuf, int len)
{
	char smbuf[WLC_IOCTL_SMLEN];
	int err;

	/* use the return buffer if it is bigger than what we have on the stack */
	if (len > (int)sizeof(smbuf)) {
		err = wl_bssiovar_getbuf(ifname, iovar, bssidx, NULL, 0, outbuf, len);
	} else {
		memset(smbuf, 0, sizeof(smbuf));
		err = wl_bssiovar_getbuf(ifname, iovar, bssidx, NULL, 0, smbuf, sizeof(smbuf));
		if (err == 0)
			memcpy(outbuf, smbuf, len);
	}

	return err;
}

void
wl_printlasterror(char *name)
{
	char err_buf[WLC_IOCTL_SMLEN];
	strcpy(err_buf, "bcmerrstr");

	fprintf(stderr, "Error: ");
	if ( wl_ioctl(name, WLC_GET_VAR, err_buf, sizeof (err_buf)) != 0)
		fprintf(stderr, "Error getting the Errorstring from driver\n");
	else
		fprintf(stderr, err_buf);
}