Root/package/broadcom-wl/src/wlcompat/wlcompat.c

1/*
2 * wlcompat.c
3 *
4 * Copyright (C) 2005 Mike Baker
5 * Copyright (C) 2005-2007 Felix Fietkau <nbd@openwrt.org>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 *
21 */
22
23
24#include <linux/config.h>
25#include <linux/module.h>
26#include <linux/moduleparam.h>
27#include <linux/init.h>
28#include <linux/if_arp.h>
29#include <linux/wireless.h>
30#include <linux/timer.h>
31#include <linux/delay.h>
32#include <linux/random.h>
33#include <net/iw_handler.h>
34#include <asm/uaccess.h>
35
36#include <typedefs.h>
37#include <bcmutils.h>
38#include <wlioctl.h>
39
40char buf[WLC_IOCTL_MAXLEN];
41static struct net_device *dev = NULL;
42#ifndef DEBUG
43static int random = 1;
44#endif
45#ifndef WL_WEXT
46static struct iw_statistics wstats;
47static int last_mode = -1;
48static int scan_cur = 0;
49
50/* The frequency of each channel in MHz */
51const long channel_frequency[] = {
52    2412, 2417, 2422, 2427, 2432, 2437, 2442,
53    2447, 2452, 2457, 2462, 2467, 2472, 2484
54};
55#define NUM_CHANNELS ( sizeof(channel_frequency) / sizeof(channel_frequency[0]) )
56#endif
57
58#define SCAN_RETRY_MAX 5
59#define RNG_POLL_FREQ 1
60
61typedef struct internal_wsec_key {
62    uint8 index; // 0x00
63    uint8 unknown_1; // 0x01
64    uint8 type; // 0x02
65    uint8 unknown_2[7]; // 0x03
66    uint8 len; // 0x0a
67    uint8 pad[3];
68    char data[32]; // 0x0e
69} wkey;
70
71
72#ifdef DEBUG
73void print_buffer(int len, unsigned char *buf);
74#endif
75
76static int wl_ioctl(struct net_device *dev, int cmd, void *buf, int len)
77{
78    mm_segment_t old_fs = get_fs();
79    struct ifreq ifr;
80    int ret;
81    wl_ioctl_t ioc;
82    ioc.cmd = cmd;
83    ioc.buf = buf;
84    ioc.len = len;
85    strncpy(ifr.ifr_name, dev->name, IFNAMSIZ);
86    ifr.ifr_data = (caddr_t) &ioc;
87    set_fs(KERNEL_DS);
88    ret = dev->do_ioctl(dev,&ifr,SIOCDEVPRIVATE);
89    set_fs (old_fs);
90    return ret;
91}
92
93#if !defined(DEBUG) || !defined(WL_WEXT)
94static int
95wl_iovar_getbuf(struct net_device *dev, char *iovar, void *param, int paramlen, void *bufptr, int buflen)
96{
97    int err;
98    uint namelen;
99    uint iolen;
100
101    namelen = strlen(iovar) + 1; /* length of iovar name plus null */
102    iolen = namelen + paramlen;
103
104    /* check for overflow */
105    if (iolen > buflen)
106        return (BCME_BUFTOOSHORT);
107
108    memcpy(bufptr, iovar, namelen); /* copy iovar name including null */
109    memcpy((int8*)bufptr + namelen, param, paramlen);
110
111    err = wl_ioctl(dev, WLC_GET_VAR, bufptr, buflen);
112
113    return (err);
114}
115
116static int
117wl_iovar_setbuf(struct net_device *dev, char *iovar, void *param, int paramlen, void *bufptr, int buflen)
118{
119    uint namelen;
120    uint iolen;
121
122    namelen = strlen(iovar) + 1; /* length of iovar name plus null */
123    iolen = namelen + paramlen;
124
125    /* check for overflow */
126    if (iolen > buflen)
127        return (BCME_BUFTOOSHORT);
128
129    memcpy(bufptr, iovar, namelen); /* copy iovar name including null */
130    memcpy((int8*)bufptr + namelen, param, paramlen);
131
132    return wl_ioctl(dev, WLC_SET_VAR, bufptr, iolen);
133}
134
135static int
136wl_iovar_set(struct net_device *dev, char *iovar, void *param, int paramlen)
137{
138    char smbuf[WLC_IOCTL_SMLEN];
139
140    return wl_iovar_setbuf(dev, iovar, param, paramlen, smbuf, sizeof(smbuf));
141}
142
143static int
144wl_iovar_get(struct net_device *dev, char *iovar, void *bufptr, int buflen)
145{
146    char smbuf[WLC_IOCTL_SMLEN];
147    int ret;
148
149    /* use the return buffer if it is bigger than what we have on the stack */
150    if (buflen > sizeof(smbuf)) {
151        ret = wl_iovar_getbuf(dev, iovar, NULL, 0, bufptr, buflen);
152    } else {
153        ret = wl_iovar_getbuf(dev, iovar, NULL, 0, smbuf, sizeof(smbuf));
154        if (ret == 0)
155            memcpy(bufptr, smbuf, buflen);
156    }
157
158    return ret;
159}
160
161#ifdef notyet
162/*
163 * format a bsscfg indexed iovar buffer
164 */
165static int
166wl_bssiovar_mkbuf(char *iovar, int bssidx, void *param, int paramlen, void *bufptr, int buflen,
167                  int *plen)
168{
169    char *prefix = "bsscfg:";
170    int8* p;
171    uint prefixlen;
172    uint namelen;
173    uint iolen;
174
175    prefixlen = strlen(prefix); /* length of bsscfg prefix */
176    namelen = strlen(iovar) + 1; /* length of iovar name + null */
177    iolen = prefixlen + namelen + sizeof(int) + paramlen;
178
179    /* check for overflow */
180    if (buflen < 0 || iolen > (uint)buflen) {
181        *plen = 0;
182        return BCME_BUFTOOSHORT;
183    }
184
185    p = (int8*)bufptr;
186
187    /* copy prefix, no null */
188    memcpy(p, prefix, prefixlen);
189    p += prefixlen;
190
191    /* copy iovar name including null */
192    memcpy(p, iovar, namelen);
193    p += namelen;
194
195    /* bss config index as first param */
196    memcpy(p, &bssidx, sizeof(int32));
197    p += sizeof(int32);
198
199    /* parameter buffer follows */
200    if (paramlen)
201        memcpy(p, param, paramlen);
202
203    *plen = iolen;
204    return 0;
205}
206
207/*
208 * set named & bss indexed driver variable to buffer value
209 */
210static int
211wl_bssiovar_setbuf(struct net_device *dev, char *iovar, int bssidx, void *param, int paramlen, void *bufptr,
212                   int buflen)
213{
214    int err;
215    int iolen;
216
217    err = wl_bssiovar_mkbuf(iovar, bssidx, param, paramlen, bufptr, buflen, &iolen);
218    if (err)
219        return err;
220
221    return wl_ioctl(dev, WLC_SET_VAR, bufptr, iolen);
222}
223
224/*
225 * get named & bss indexed driver variable buffer value
226 */
227static int
228wl_bssiovar_getbuf(struct net_device *dev, char *iovar, int bssidx, void *param, int paramlen, void *bufptr,
229                   int buflen)
230{
231    int err;
232    int iolen;
233
234    err = wl_bssiovar_mkbuf(iovar, bssidx, param, paramlen, bufptr, buflen, &iolen);
235    if (err)
236        return err;
237
238    return wl_ioctl(dev, WLC_GET_VAR, bufptr, buflen);
239}
240
241/*
242 * set named & bss indexed driver variable to buffer value
243 */
244static int
245wl_bssiovar_set(struct net_device *dev, char *iovar, int bssidx, void *param, int paramlen)
246{
247    char smbuf[WLC_IOCTL_SMLEN];
248
249    return wl_bssiovar_setbuf(dev, iovar, bssidx, param, paramlen, smbuf, sizeof(smbuf));
250}
251
252/*
253 * get named & bss indexed driver variable buffer value
254 */
255static int
256wl_bssiovar_get(struct net_device *dev, char *iovar, int bssidx, void *outbuf, int len)
257{
258    char smbuf[WLC_IOCTL_SMLEN];
259    int err;
260
261    /* use the return buffer if it is bigger than what we have on the stack */
262    if (len > (int)sizeof(smbuf)) {
263        err = wl_bssiovar_getbuf(dev, iovar, bssidx, NULL, 0, outbuf, len);
264    } else {
265        memset(smbuf, 0, sizeof(smbuf));
266        err = wl_bssiovar_getbuf(dev, iovar, bssidx, NULL, 0, smbuf, sizeof(smbuf));
267        if (err == 0)
268            memcpy(outbuf, smbuf, len);
269    }
270
271    return err;
272}
273#endif
274#endif
275
276#ifndef WL_WEXT
277
278int get_primary_key(struct net_device *dev)
279{
280    int key, val;
281    
282    for (key = val = 0; (key < 4) && (val == 0); key++) {
283        val = key;
284        if (wl_ioctl(dev, WLC_GET_KEY_PRIMARY, &val, sizeof(val)) < 0)
285            return -EINVAL;
286    }
287    return key;
288}
289
290
291static int wlcompat_ioctl_getiwrange(struct net_device *dev,
292                    char *extra)
293{
294    int i, k;
295    struct iw_range *range;
296
297    range = (struct iw_range *) extra;
298    memset(extra, 0, sizeof(struct iw_range));
299
300    range->we_version_compiled = WIRELESS_EXT;
301    range->we_version_source = WIRELESS_EXT;
302    
303    range->min_nwid = range->max_nwid = 0;
304    
305    range->num_channels = NUM_CHANNELS;
306    k = 0;
307    for (i = 0; i < NUM_CHANNELS; i++) {
308        range->freq[k].i = i + 1;
309        range->freq[k].m = channel_frequency[i] * 100000;
310        range->freq[k].e = 1;
311        k++;
312        if (k >= IW_MAX_FREQUENCIES)
313            break;
314    }
315    range->num_frequency = k;
316    range->sensitivity = 3;
317
318    /* nbd: don't know what this means, but other drivers set it this way */
319    range->pmp_flags = IW_POWER_PERIOD;
320    range->pmt_flags = IW_POWER_TIMEOUT;
321    range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_UNICAST_R;
322
323    range->min_pmp = 0;
324    range->max_pmp = 65535000;
325    range->min_pmt = 0;
326    range->max_pmt = 65535 * 1000;
327
328    range->max_qual.qual = 0;
329    range->max_qual.level = 0;
330    range->max_qual.noise = 0;
331    
332    range->min_rts = 0;
333    if (wl_iovar_get(dev, "rtsthresh", &range->max_rts, sizeof(int)) < 0)
334        range->max_rts = 2347;
335
336    range->min_frag = 256;
337    
338    if (wl_iovar_get(dev, "fragthresh", &range->max_frag, sizeof(int)) < 0)
339        range->max_frag = 2346;
340
341    range->txpower_capa = IW_TXPOW_DBM;
342
343    return 0;
344}
345
346
347static int wlcompat_set_scan(struct net_device *dev,
348             struct iw_request_info *info,
349             union iwreq_data *wrqu,
350             char *extra)
351{
352    int ap = 0;
353    wl_scan_params_t params;
354
355    memset(&params, 0, sizeof(params));
356
357    /* use defaults (same parameters as wl scan) */
358    memset(&params.bssid, 0xff, sizeof(params.bssid));
359    params.bss_type = DOT11_BSSTYPE_ANY;
360    params.scan_type = -1;
361    params.nprobes = -1;
362    params.active_time = -1;
363    params.passive_time = -1;
364    params.home_time = -1;
365    
366    /* can only scan in STA mode */
367    wl_ioctl(dev, WLC_GET_AP, &last_mode, sizeof(last_mode));
368    if (last_mode > 0) {
369        /* switch to ap mode, scan result query will switch back */
370        wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap));
371
372        /* wait 250 msec after mode change */
373        set_current_state(TASK_INTERRUPTIBLE);
374        schedule_timeout(msecs_to_jiffies(250));
375    }
376
377    scan_cur = SCAN_RETRY_MAX;
378    while (scan_cur-- && (wl_ioctl(dev, WLC_SCAN, &params, 64) < 0)) {
379        /* sometimes the driver takes a few tries... */
380        set_current_state(TASK_INTERRUPTIBLE);
381        schedule_timeout(msecs_to_jiffies(250));
382    }
383
384    if (!scan_cur)
385        return -EINVAL;
386    
387    scan_cur = 0;
388
389    /* wait at least 2 seconds for results */
390    set_current_state(TASK_INTERRUPTIBLE);
391    schedule_timeout(msecs_to_jiffies(2000));
392    
393    return 0;
394}
395
396
397struct iw_statistics *wlcompat_get_wireless_stats(struct net_device *dev)
398{
399    struct wl_bss_info *bss_info = (struct wl_bss_info *) buf;
400    get_pktcnt_t pkt;
401    unsigned int rssi, noise, ap;
402    
403    memset(&wstats, 0, sizeof(wstats));
404    memset(&pkt, 0, sizeof(pkt));
405    memset(buf, 0, sizeof(buf));
406    bss_info->version = 0x2000;
407    wl_ioctl(dev, WLC_GET_BSS_INFO, bss_info, WLC_IOCTL_MAXLEN);
408    wl_ioctl(dev, WLC_GET_PKTCNTS, &pkt, sizeof(pkt));
409
410    rssi = 0;
411    if ((wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0) || ap) {
412        if (wl_ioctl(dev, WLC_GET_PHY_NOISE, &noise, sizeof(noise)) < 0)
413            noise = 0;
414    } else {
415        // somehow the structure doesn't fit here
416        rssi = buf[82];
417        noise = buf[84];
418    }
419    rssi = (rssi == 0 ? 1 : rssi);
420    wstats.qual.updated = 0x10;
421    if (rssi <= 1)
422        wstats.qual.updated |= 0x20;
423    if (noise <= 1)
424        wstats.qual.updated |= 0x40;
425
426    if ((wstats.qual.updated & 0x60) == 0x60)
427        return NULL;
428
429    wstats.qual.level = rssi;
430    wstats.qual.noise = noise;
431    wstats.discard.misc = pkt.rx_bad_pkt;
432    wstats.discard.retries = pkt.tx_bad_pkt;
433
434    return &wstats;
435}
436
437static int wlcompat_get_scan(struct net_device *dev,
438             struct iw_request_info *info,
439             union iwreq_data *wrqu,
440             char *extra)
441{
442    wl_scan_results_t *results = (wl_scan_results_t *) buf;
443    wl_bss_info_t *bss_info;
444    char *info_ptr;
445    char *current_ev = extra;
446    char *current_val;
447    char *end_buf = extra + IW_SCAN_MAX_DATA;
448    struct iw_event iwe;
449    int i, j;
450    int rssi, noise;
451    
452    memset(buf, 0, WLC_IOCTL_MAXLEN);
453    results->buflen = WLC_IOCTL_MAXLEN - sizeof(wl_scan_results_t);
454    
455    if (wl_ioctl(dev, WLC_SCAN_RESULTS, buf, WLC_IOCTL_MAXLEN) < 0)
456        return -EAGAIN;
457    
458    if ((results->count <= 0) && (scan_cur++ < SCAN_RETRY_MAX))
459        return -EAGAIN;
460    
461    bss_info = &(results->bss_info[0]);
462    info_ptr = (char *) bss_info;
463    for (i = 0; i < results->count; i++) {
464        /* send the cell address (must be sent first) */
465        iwe.cmd = SIOCGIWAP;
466        iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
467        memcpy(&iwe.u.ap_addr.sa_data, &bss_info->BSSID, sizeof(bss_info->BSSID));
468        current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
469        
470        /* send the ESSID */
471        iwe.cmd = SIOCGIWESSID;
472        iwe.u.data.length = bss_info->SSID_len;
473        if (iwe.u.data.length > IW_ESSID_MAX_SIZE)
474            iwe.u.data.length = IW_ESSID_MAX_SIZE;
475        iwe.u.data.flags = 1;
476        current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss_info->SSID);
477
478        /* send mode */
479        if (bss_info->capability & (DOT11_CAP_ESS | DOT11_CAP_IBSS)) {
480            iwe.cmd = SIOCGIWMODE;
481            if (bss_info->capability & DOT11_CAP_ESS)
482                iwe.u.mode = IW_MODE_MASTER;
483            else if (bss_info->capability & DOT11_CAP_IBSS)
484                iwe.u.mode = IW_MODE_ADHOC;
485            current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_UINT_LEN);
486        }
487
488        /* send frequency/channel info */
489        iwe.cmd = SIOCGIWFREQ;
490        iwe.u.freq.e = 0;
491        iwe.u.freq.m = bss_info->chanspec & WL_CHANSPEC_CHAN_MASK;
492        current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
493
494        /* add quality statistics */
495        iwe.cmd = IWEVQUAL;
496        iwe.u.qual.qual = 0;
497        iwe.u.qual.level = bss_info->RSSI;
498        iwe.u.qual.noise = bss_info->phy_noise;
499        current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
500    
501        /* send encryption capability */
502        iwe.cmd = SIOCGIWENCODE;
503        iwe.u.data.pointer = NULL;
504        iwe.u.data.length = 0;
505        if (bss_info->capability & DOT11_CAP_PRIVACY)
506            iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
507        else
508            iwe.u.data.flags = IW_ENCODE_DISABLED;
509        current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, NULL);
510
511        /* send rate information */
512        iwe.cmd = SIOCGIWRATE;
513        current_val = current_ev + IW_EV_LCP_LEN;
514        iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
515        
516        for(j = 0 ; j < bss_info->rateset.count ; j++) {
517            iwe.u.bitrate.value = ((bss_info->rateset.rates[j] & 0x7f) * 500000);
518            current_val = iwe_stream_add_value(current_ev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN);
519        }
520        if((current_val - current_ev) > IW_EV_LCP_LEN)
521            current_ev = current_val;
522
523        info_ptr += sizeof(wl_bss_info_t);
524        if (bss_info->ie_length % 4)
525            info_ptr += bss_info->ie_length + 4 - (bss_info->ie_length % 4);
526        else
527            info_ptr += bss_info->ie_length;
528        bss_info = (wl_bss_info_t *) info_ptr;
529    }
530    
531    wrqu->data.length = (current_ev - extra);
532    wrqu->data.flags = 0;
533
534    if (last_mode > 0)
535        /* switch back to ap mode */
536        wl_ioctl(dev, WLC_SET_AP, &last_mode, sizeof(last_mode));
537    
538    return 0;
539}
540
541static int wlcompat_ioctl(struct net_device *dev,
542             struct iw_request_info *info,
543             union iwreq_data *wrqu,
544             char *extra)
545{
546    switch (info->cmd) {
547        case SIOCGIWNAME:
548            strcpy(wrqu->name, "IEEE 802.11-DS");
549            break;
550        case SIOCGIWFREQ:
551        {
552            channel_info_t ci;
553
554            if (wl_ioctl(dev,WLC_GET_CHANNEL, &ci, sizeof(ci)) < 0)
555                return -EINVAL;
556
557            wrqu->freq.m = ci.target_channel;
558            wrqu->freq.e = 0;
559            break;
560        }
561        case SIOCSIWFREQ:
562        {
563            if (wrqu->freq.m == -1) {
564                wrqu->freq.m = 0;
565                if (wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int)) < 0)
566                    return -EINVAL;
567            } else {
568                if (wrqu->freq.e == 1) {
569                    int channel = 0;
570                    int f = wrqu->freq.m / 100000;
571                    while ((channel < NUM_CHANNELS + 1) && (f != channel_frequency[channel]))
572                        channel++;
573                    
574                    if (channel == NUM_CHANNELS) // channel not found
575                        return -EINVAL;
576
577                    wrqu->freq.e = 0;
578                    wrqu->freq.m = channel + 1;
579                }
580                if ((wrqu->freq.e == 0) && (wrqu->freq.m < 1000)) {
581                    if (wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int)) < 0)
582                        return -EINVAL;
583                } else {
584                    return -EINVAL;
585                }
586            }
587            break;
588        }
589        case SIOCSIWAP:
590        {
591            int ap = 0;
592            int infra = 0;
593            rw_reg_t reg;
594
595            memset(&reg, 0, sizeof(reg));
596
597            if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
598                return -EINVAL;
599
600            if (wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0)
601                return -EINVAL;
602
603            if (wl_ioctl(dev, WLC_GET_INFRA, &infra, sizeof(infra)) < 0)
604                return -EINVAL;
605
606            if (!infra)
607                wl_ioctl(dev, WLC_SET_BSSID, wrqu->ap_addr.sa_data, 6);
608
609            if (wl_ioctl(dev, ((ap || !infra) ? WLC_SET_BSSID : WLC_REASSOC), wrqu->ap_addr.sa_data, 6) < 0)
610                return -EINVAL;
611
612            break;
613        }
614        case SIOCGIWAP:
615        {
616            wrqu->ap_addr.sa_family = ARPHRD_ETHER;
617            if (wl_ioctl(dev,WLC_GET_BSSID,wrqu->ap_addr.sa_data,6) < 0)
618                return -EINVAL;
619            break;
620        }
621        case SIOCGIWESSID:
622        {
623            wlc_ssid_t ssid;
624            
625            if (wl_ioctl(dev,WLC_GET_SSID, &ssid, sizeof(wlc_ssid_t)) < 0)
626                return -EINVAL;
627
628            wrqu->essid.flags = wrqu->data.flags = 1;
629            wrqu->essid.length = wrqu->data.length = ssid.SSID_len + 1;
630            memcpy(extra,ssid.SSID,ssid.SSID_len + 1);
631            break;
632        }
633        case SIOCSIWESSID:
634        {
635            wlc_ssid_t ssid;
636            memset(&ssid, 0, sizeof(ssid));
637            ssid.SSID_len = strlen(extra);
638            if (ssid.SSID_len > 32)
639                ssid.SSID_len = 32;
640            memcpy(ssid.SSID, extra, ssid.SSID_len);
641            if (wl_ioctl(dev, WLC_SET_SSID, &ssid, sizeof(ssid)) < 0)
642                return -EINVAL;
643            break;
644        }
645        case SIOCGIWRTS:
646        {
647            if (wl_iovar_get(dev, "rtsthresh", &(wrqu->rts.value), sizeof(int)) < 0)
648                return -EINVAL;
649            break;
650        }
651        case SIOCSIWRTS:
652        {
653            if (wl_iovar_set(dev, "rtsthresh", &(wrqu->rts.value), sizeof(int)) < 0)
654                return -EINVAL;
655            break;
656        }
657        case SIOCGIWFRAG:
658        {
659            if (wl_iovar_get(dev, "fragthresh", &(wrqu->frag.value), sizeof(int)) < 0)
660                return -EINVAL;
661            break;
662        }
663        case SIOCSIWFRAG:
664        {
665            if (wl_iovar_set(dev, "fragthresh", &(wrqu->frag.value), sizeof(int)) < 0)
666                return -EINVAL;
667            break;
668        }
669        case SIOCGIWTXPOW:
670        {
671            int radio, override;
672
673            wl_ioctl(dev, WLC_GET_RADIO, &radio, sizeof(int));
674            
675            if (wl_iovar_get(dev, "qtxpower", &(wrqu->txpower.value), sizeof(int)) < 0)
676                return -EINVAL;
677            
678            override = (wrqu->txpower.value & WL_TXPWR_OVERRIDE) == WL_TXPWR_OVERRIDE;
679            wrqu->txpower.value &= ~WL_TXPWR_OVERRIDE;
680            if (!override && (wrqu->txpower.value > 76))
681                wrqu->txpower.value = 76;
682            wrqu->txpower.value /= 4;
683                
684            wrqu->txpower.fixed = 0;
685            wrqu->txpower.disabled = radio;
686            wrqu->txpower.flags = IW_TXPOW_DBM;
687            break;
688        }
689        case SIOCSIWTXPOW:
690        {
691            /* This is weird: WLC_SET_RADIO with 1 as argument disables the radio */
692            int radio = wrqu->txpower.disabled;
693
694            wl_ioctl(dev, WLC_SET_RADIO, &radio, sizeof(int));
695            
696            if (!wrqu->txpower.disabled && (wrqu->txpower.value > 0)) {
697                int value;
698                
699                if (wl_iovar_get(dev, "qtxpower", &value, sizeof(int)) < 0)
700                    return -EINVAL;
701                
702                value &= WL_TXPWR_OVERRIDE;
703                wrqu->txpower.value *= 4;
704                wrqu->txpower.value |= value;
705                
706                if (wrqu->txpower.flags != IW_TXPOW_DBM)
707                    return -EINVAL;
708                
709                if (wrqu->txpower.value > 0)
710                    if (wl_iovar_set(dev, "qtxpower", &(wrqu->txpower.value), sizeof(int)) < 0)
711                        return -EINVAL;
712            }
713            break;
714        }
715        case SIOCSIWENCODE:
716        {
717            int val = 0, wep = 1, wrestrict = 1;
718            int index = (wrqu->data.flags & IW_ENCODE_INDEX) - 1;
719
720            if (index < 0)
721                index = get_primary_key(dev);
722            
723            if (wrqu->data.flags & IW_ENCODE_DISABLED) {
724                wep = 0;
725                if (wl_ioctl(dev, WLC_SET_WSEC, &wep, sizeof(val)) < 0)
726                    return -EINVAL;
727                return 0;
728            }
729
730            if (wl_ioctl(dev, WLC_SET_WSEC, &wep, sizeof(val)) < 0)
731                return -EINVAL;
732
733            if (wrqu->data.flags & IW_ENCODE_OPEN)
734                wrestrict = 0;
735            
736            if (wrqu->data.pointer && (wrqu->data.length > 0) && (wrqu->data.length <= 16)) {
737                wl_wsec_key_t key;
738                memset(&key, 0, sizeof(key));
739
740                key.flags = WL_PRIMARY_KEY;
741                key.len = wrqu->data.length;
742                key.index = index;
743                memcpy(key.data, wrqu->data.pointer, wrqu->data.length);
744
745                if (wl_ioctl(dev, WLC_SET_KEY, &key, sizeof(key)) < 0)
746                    return -EINVAL;
747            }
748
749            if (index >= 0)
750                wl_ioctl(dev, WLC_SET_KEY_PRIMARY, &index, sizeof(index));
751            
752            if (wrestrict >= 0)
753                wl_ioctl(dev, WLC_SET_WEP_RESTRICT, &wrestrict, sizeof(wrestrict));
754
755            break;
756        }
757        case SIOCGIWENCODE:
758        {
759            int val;
760            int key = get_primary_key(dev);
761            int *info_addr;
762            wkey *wep_key;
763            
764            if (wl_ioctl(dev, WLC_GET_WSEC, &val, sizeof(val)) < 0)
765                return -EINVAL;
766            if (!(val & WEP_ENABLED)) {
767                wrqu->data.flags = IW_ENCODE_DISABLED;
768                break;
769            }
770
771            key = get_primary_key(dev);
772            wrqu->data.flags = IW_ENCODE_ENABLED;
773
774            /* the driver apparently doesn't allow us to read the wep key */
775            wrqu->data.flags |= IW_ENCODE_NOKEY;
776
777            break;
778        }
779        case SIOCGIWRANGE:
780        {
781            return wlcompat_ioctl_getiwrange(dev, extra);
782            break;
783        }
784        case SIOCSIWMODE:
785        {
786            int ap = -1, infra = -1, passive = 0, wet = 0;
787
788            wl_ioctl(dev, WLC_GET_WET, &wet, sizeof(wet));
789            switch (wrqu->mode) {
790                case IW_MODE_MONITOR:
791                    passive = 1;
792                    break;
793                case IW_MODE_ADHOC:
794                    infra = 0;
795                    ap = 0;
796                    break;
797                case IW_MODE_MASTER:
798                    infra = 1;
799                    ap = 1;
800                    break;
801                case IW_MODE_INFRA:
802                    infra = 1;
803                    ap = 0;
804                    wet = 0;
805                    break;
806                case IW_MODE_REPEAT:
807                    infra = 1;
808                    ap = 0;
809                    wet = 1;
810                    break;
811                default:
812                    return -EINVAL;
813            }
814
815            wl_ioctl(dev, WLC_SET_PASSIVE, &passive, sizeof(passive));
816            wl_ioctl(dev, WLC_SET_MONITOR, &passive, sizeof(passive));
817            if ((ap == 0) && (infra == 1))
818                wl_ioctl(dev, WLC_SET_WET, &wet, sizeof(wet));
819            if (ap >= 0)
820                wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap));
821            if (infra >= 0)
822                wl_ioctl(dev, WLC_SET_INFRA, &infra, sizeof(infra));
823
824            break;
825        }
826        case SIOCGIWMODE:
827        {
828            int ap, infra, wet, passive;
829
830            if (wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0)
831                return -EINVAL;
832            if (wl_ioctl(dev, WLC_GET_INFRA, &infra, sizeof(infra)) < 0)
833                return -EINVAL;
834            if (wl_ioctl(dev, WLC_GET_PASSIVE, &passive, sizeof(passive)) < 0)
835                return -EINVAL;
836
837            if (passive) {
838                wrqu->mode = IW_MODE_MONITOR;
839            } else if (!infra) {
840                wrqu->mode = IW_MODE_ADHOC;
841            } else {
842                if (ap) {
843                    wrqu->mode = IW_MODE_MASTER;
844                } else {
845                    wrqu->mode = IW_MODE_INFRA;
846                }
847            }
848            break;
849        }
850        default:
851            return -EINVAL;
852            break;
853    }
854    
855    return 0;
856}
857
858static const iw_handler wlcompat_handler[] = {
859    NULL, /* SIOCSIWCOMMIT */
860    wlcompat_ioctl, /* SIOCGIWNAME */
861    NULL, /* SIOCSIWNWID */
862    NULL, /* SIOCGIWNWID */
863    wlcompat_ioctl, /* SIOCSIWFREQ */
864    wlcompat_ioctl, /* SIOCGIWFREQ */
865    wlcompat_ioctl, /* SIOCSIWMODE */
866    wlcompat_ioctl, /* SIOCGIWMODE */
867    NULL, /* SIOCSIWSENS */
868    NULL, /* SIOCGIWSENS */
869    NULL, /* SIOCSIWRANGE, unused */
870    wlcompat_ioctl, /* SIOCGIWRANGE */
871    NULL, /* SIOCSIWPRIV */
872    NULL, /* SIOCGIWPRIV */
873    NULL, /* SIOCSIWSTATS */
874    NULL, /* SIOCGIWSTATS */
875    iw_handler_set_spy, /* SIOCSIWSPY */
876    iw_handler_get_spy, /* SIOCGIWSPY */
877    iw_handler_set_thrspy, /* SIOCSIWTHRSPY */
878    iw_handler_get_thrspy, /* SIOCGIWTHRSPY */
879    wlcompat_ioctl, /* SIOCSIWAP */
880    wlcompat_ioctl, /* SIOCGIWAP */
881    NULL, /* -- hole -- */
882    NULL, /* SIOCGIWAPLIST */
883    wlcompat_set_scan, /* SIOCSIWSCAN */
884    wlcompat_get_scan, /* SIOCGIWSCAN */
885    wlcompat_ioctl, /* SIOCSIWESSID */
886    wlcompat_ioctl, /* SIOCGIWESSID */
887    NULL, /* SIOCSIWNICKN */
888    NULL, /* SIOCGIWNICKN */
889    NULL, /* -- hole -- */
890    NULL, /* -- hole -- */
891    NULL, /* SIOCSIWRATE */
892    NULL, /* SIOCGIWRATE */
893    wlcompat_ioctl, /* SIOCSIWRTS */
894    wlcompat_ioctl, /* SIOCGIWRTS */
895    wlcompat_ioctl, /* SIOCSIWFRAG */
896    wlcompat_ioctl, /* SIOCGIWFRAG */
897    wlcompat_ioctl, /* SIOCSIWTXPOW */
898    wlcompat_ioctl, /* SIOCGIWTXPOW */
899    NULL, /* SIOCSIWRETRY */
900    NULL, /* SIOCGIWRETRY */
901    wlcompat_ioctl, /* SIOCSIWENCODE */
902    wlcompat_ioctl, /* SIOCGIWENCODE */
903};
904
905
906static const struct iw_handler_def wlcompat_handler_def =
907{
908    .standard = (iw_handler *) wlcompat_handler,
909    .num_standard = sizeof(wlcompat_handler)/sizeof(iw_handler),
910};
911
912#endif
913
914#ifdef DEBUG
915void print_buffer(int len, unsigned char *buf) {
916    int x;
917    if (buf != NULL) {
918        for (x=0;x<len && x<180 ;x++) {
919            if ((x % 4) == 0)
920                printk(" ");
921            printk("%02X",buf[x]);
922        }
923    } else {
924        printk(" NULL");
925    }
926    printk("\n");
927
928}
929#endif
930static int (*old_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
931static int new_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) {
932    int ret = 0;
933    
934#ifdef DEBUG
935    printk("dev: %s ioctl: 0x%04x\n",dev->name,cmd);
936    if (cmd==SIOCDEVPRIVATE) {
937        wl_ioctl_t *ioc = (wl_ioctl_t *)ifr->ifr_data;
938        unsigned char *buf = ioc->buf;
939        printk(" cmd: %d buf: 0x%08x len: %d\n",ioc->cmd,&(ioc->buf),ioc->len);
940        printk(" send: ->");
941        print_buffer(ioc->len, buf);
942        ret = old_ioctl(dev,ifr,cmd);
943        printk(" recv: ->");
944        print_buffer(ioc->len, buf);
945        printk(" ret: %d\n", ret);
946    } else
947#endif
948    {
949        ret = old_ioctl(dev,ifr,cmd);
950    }
951    return ret;
952}
953
954#ifndef DEBUG
955static struct timer_list rng_timer;
956static spinlock_t rng_lock = SPIN_LOCK_UNLOCKED;
957
958static void rng_timer_tick(unsigned long n)
959{
960    struct net_device *dev = (struct net_device *) n;
961    unsigned long flags;
962    u16 data[4];
963    int i, ret;
964    
965    ret = 0;
966    spin_lock_irqsave(&rng_lock, flags);
967    for (i = 0; i < 3; i++) {
968        ret |= wl_iovar_get(dev, "rand", &data[i], sizeof(u16));
969    }
970    spin_unlock_irqrestore(&rng_lock, flags);
971
972    if (!ret)
973        batch_entropy_store(*((u32 *) &data[0]), *((u32 *) &data[2]), (jiffies % 255));
974
975    mod_timer(&rng_timer, jiffies + (HZ/RNG_POLL_FREQ));
976}
977#endif
978
979static int __init wlcompat_init()
980{
981    int found = 0, i;
982    char devname[4] = "wl0";
983
984    /* calling dev_get_by_name() will inc the open_counter in dev
985     * we must put it back with dev_put() when we are finished to dec the counter */
986    while (!found && (dev = dev_get_by_name(devname))) {
987        if ((wl_ioctl(dev, WLC_GET_MAGIC, &i, sizeof(i)) == 0) && (i == WLC_IOCTL_MAGIC))
988            found = 1;
989        else {
990            dev_put(dev);
991            devname[2]++;
992        }
993    }
994
995
996    if (!found) {
997        printk("No Broadcom devices found.\n");
998        return -ENODEV;
999    }
1000
1001    old_ioctl = dev->do_ioctl;
1002    dev->do_ioctl = new_ioctl;
1003#ifndef WL_WEXT
1004    dev->wireless_handlers = (struct iw_handler_def *)&wlcompat_handler_def;
1005    dev->get_wireless_stats = wlcompat_get_wireless_stats;
1006#endif
1007
1008#ifndef DEBUG
1009    if (random) {
1010        init_timer(&rng_timer);
1011        rng_timer.function = rng_timer_tick;
1012        rng_timer.data = (unsigned long) dev;
1013        rng_timer_tick((unsigned long) dev);
1014    }
1015#endif
1016    
1017#ifdef DEBUG
1018    printk("broadcom driver private data: 0x%08x\n", dev->priv);
1019#endif
1020    return 0;
1021}
1022
1023static void __exit wlcompat_exit()
1024{
1025#ifndef DEBUG
1026    if (random)
1027        del_timer(&rng_timer);
1028#endif
1029#ifndef WL_WEXT
1030    dev->get_wireless_stats = NULL;
1031    dev->wireless_handlers = NULL;
1032#endif
1033    dev->do_ioctl = old_ioctl;
1034
1035    dev_put(dev);
1036
1037    return;
1038}
1039
1040EXPORT_NO_SYMBOLS;
1041MODULE_AUTHOR("openwrt.org");
1042MODULE_LICENSE("GPL");
1043
1044#ifndef DEBUG
1045module_param(random, int, 0);
1046#endif
1047module_init(wlcompat_init);
1048module_exit(wlcompat_exit);
1049

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