4 * Copyright (C) 2005 Mike Baker,
5 * Felix Fietkau <nbd@vd-s.ath.cx>
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.
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.
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.
25 #include <linux/config.h>
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/if_arp.h>
29 #include <asm/uaccess.h>
30 #include <linux/wireless.h>
32 #include <net/iw_handler.h>
35 static struct net_device *dev;
36 char buf[WLC_IOCTL_MAXLEN];
38 /* The frequency of each channel in MHz */
39 const long channel_frequency[] = {
40 2412, 2417, 2422, 2427, 2432, 2437, 2442,
41 2447, 2452, 2457, 2462, 2467, 2472, 2484
43 #define NUM_CHANNELS ( sizeof(channel_frequency) / sizeof(channel_frequency[0]) )
45 static int wlcompat_private_ioctl(struct net_device *dev,
46 struct iw_request_info *info,
47 union iwreq_data *wrqu,
50 static int wl_ioctl(struct net_device *dev, int cmd, void *buf, int len)
52 mm_segment_t old_fs = get_fs();
59 strncpy(ifr.ifr_name, dev->name, IFNAMSIZ);
60 ifr.ifr_data = (caddr_t) &ioc;
62 ret = dev->do_ioctl(dev,&ifr,SIOCDEVPRIVATE);
67 static int wl_set_val(struct net_device *dev, char *var, void *val, int len)
72 /* check for overflow */
73 if ((buf_len = strlen(var)) + 1 + len > sizeof(buf))
79 /* append int value onto the end of the name string */
80 memcpy(&buf[buf_len], val, len);
83 return wl_ioctl(dev, WLC_SET_VAR, buf, buf_len);
86 static int wl_get_val(struct net_device *dev, char *var, void *val, int len)
91 /* check for overflow */
92 if (strlen(var) + 1 > sizeof(buf) || len > sizeof(buf))
96 if ((ret = wl_ioctl(dev, WLC_GET_VAR, buf, sizeof(buf))))
99 memcpy(val, buf, len);
104 static int wlcompat_ioctl_getiwrange(struct net_device *dev,
108 struct iw_range *range;
110 range = (struct iw_range *) extra;
112 range->we_version_compiled = WIRELESS_EXT;
113 range->we_version_source = WIRELESS_EXT;
115 range->min_nwid = range->max_nwid = 0;
117 range->num_channels = NUM_CHANNELS;
119 for (i = 0; i < NUM_CHANNELS; i++) {
120 range->freq[k].i = i + 1;
121 range->freq[k].m = channel_frequency[i] * 100000;
122 range->freq[k].e = 1;
124 if (k >= IW_MAX_FREQUENCIES)
127 range->num_frequency = k;
128 range->sensitivity = 3;
130 /* nbd: don't know what this means, but other drivers set it this way */
131 range->pmp_flags = IW_POWER_PERIOD;
132 range->pmt_flags = IW_POWER_TIMEOUT;
133 range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_UNICAST_R;
136 range->max_pmp = 65535000;
138 range->max_pmt = 65535 * 1000;
141 if (wl_ioctl(dev, WLC_GET_RTS, &range->max_rts, sizeof(int)) < 0)
142 range->max_rts = 2347;
144 range->min_frag = 256;
146 if (wl_ioctl(dev, WLC_GET_FRAG, &range->max_frag, sizeof(int)) < 0)
147 range->max_frag = 2346;
149 range->txpower_capa = IW_TXPOW_MWATT;
155 static int wlcompat_set_scan(struct net_device *dev,
156 struct iw_request_info *info,
157 union iwreq_data *wrqu,
160 int ap = 0, oldap = 0;
161 wl_scan_params_t params;
163 memset(¶ms, 0, sizeof(params));
165 /* use defaults (same parameters as wl scan) */
166 memset(¶ms.bssid, 0xff, sizeof(params.bssid));
167 params.bss_type = DOT11_BSSTYPE_ANY;
168 params.scan_type = -1;
170 params.active_time = -1;
171 params.passive_time = -1;
172 params.home_time = -1;
174 /* can only scan in STA mode */
175 wl_ioctl(dev, WLC_GET_AP, &oldap, sizeof(oldap));
177 wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap));
179 if (wl_ioctl(dev, WLC_SCAN, ¶ms, 64) < 0)
183 wl_ioctl(dev, WLC_SET_AP, &oldap, sizeof(oldap));
189 static int wlcompat_get_scan(struct net_device *dev,
190 struct iw_request_info *info,
191 union iwreq_data *wrqu,
194 wl_scan_results_t *results = (wl_scan_results_t *) buf;
195 wl_bss_info_t *bss_info;
197 char *current_ev = extra;
199 char *end_buf = extra + IW_SCAN_MAX_DATA;
203 if (wl_ioctl(dev, WLC_SCAN_RESULTS, buf, WLC_IOCTL_MAXLEN) < 0)
206 bss_info = &(results->bss_info[0]);
207 info_ptr = (char *) bss_info;
208 for (i = 0; i < results->count; i++) {
210 /* send the cell address (must be sent first) */
212 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
213 memcpy(&iwe.u.ap_addr.sa_data, &bss_info->BSSID, sizeof(bss_info->BSSID));
214 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
217 iwe.cmd = SIOCGIWESSID;
218 iwe.u.data.length = bss_info->SSID_len;
219 if (iwe.u.data.length > IW_ESSID_MAX_SIZE)
220 iwe.u.data.length = IW_ESSID_MAX_SIZE;
221 iwe.u.data.flags = 1;
222 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss_info->SSID);
224 /* send frequency/channel info */
225 iwe.cmd = SIOCGIWFREQ;
227 iwe.u.freq.m = bss_info->channel;
228 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
230 /* add quality statistics */
232 iwe.u.qual.level = bss_info->RSSI;
233 iwe.u.qual.noise = bss_info->phy_noise;
235 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
237 /* send rate information */
238 iwe.cmd = SIOCGIWRATE;
239 current_val = current_ev + IW_EV_LCP_LEN;
240 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
242 for(j = 0 ; j < bss_info->rateset.count ; j++) {
243 iwe.u.bitrate.value = ((bss_info->rateset.rates[j] & 0x7f) * 500000);
244 current_val = iwe_stream_add_value(current_ev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN);
246 if((current_val - current_ev) > IW_EV_LCP_LEN)
247 current_ev = current_val;
249 info_ptr += sizeof(wl_bss_info_t);
250 if (bss_info->ie_length % 4)
251 info_ptr += bss_info->ie_length + 4 - (bss_info->ie_length % 4);
253 info_ptr += bss_info->ie_length;
254 bss_info = (wl_bss_info_t *) info_ptr;
257 wrqu->data.length = (current_ev - extra);
258 wrqu->data.flags = 0;
263 static int wlcompat_ioctl(struct net_device *dev,
264 struct iw_request_info *info,
265 union iwreq_data *wrqu,
270 strcpy(wrqu->name, "IEEE 802.11-DS");
276 if (wl_ioctl(dev,WLC_GET_CHANNEL, &ci, sizeof(ci)) < 0)
279 wrqu->freq.m = ci.target_channel;
285 if (wrqu->freq.e == 1) {
287 int f = wrqu->freq.m / 100000;
288 while ((channel < NUM_CHANNELS + 1) && (f != channel_frequency[channel]))
291 if (channel == NUM_CHANNELS) // channel not found
295 wrqu->freq.m = channel + 1;
297 if ((wrqu->freq.e == 0) && (wrqu->freq.m < 1000)) {
298 if (wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int)) < 0)
307 if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
310 if (wl_ioctl(dev,WLC_SET_BSSID,wrqu->ap_addr.sa_data,6) < 0)
317 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
318 if (wl_ioctl(dev,WLC_GET_BSSID,wrqu->ap_addr.sa_data,6) < 0)
326 if (wl_ioctl(dev,WLC_GET_SSID, &ssid, sizeof(wlc_ssid_t)) < 0)
329 wrqu->essid.flags = wrqu->data.flags = 1;
330 wrqu->essid.length = wrqu->data.length = ssid.SSID_len + 1;
331 memcpy(extra,ssid.SSID,ssid.SSID_len + 1);
337 memset(&ssid, 0, sizeof(ssid));
338 ssid.SSID_len = strlen(extra);
339 if (ssid.SSID_len > WLC_ESSID_MAX_SIZE)
340 ssid.SSID_len = WLC_ESSID_MAX_SIZE;
341 memcpy(ssid.SSID, extra, ssid.SSID_len);
342 if (wl_ioctl(dev, WLC_SET_SSID, &ssid, sizeof(ssid)) < 0)
348 if (wl_ioctl(dev,WLC_GET_RTS,&(wrqu->rts.value),sizeof(int)) < 0)
354 if (wl_ioctl(dev,WLC_SET_RTS,&(wrqu->rts.value),sizeof(int)) < 0)
360 if (wl_ioctl(dev,WLC_GET_FRAG,&(wrqu->frag.value),sizeof(int)) < 0)
366 if (wl_ioctl(dev,WLC_SET_FRAG,&(wrqu->frag.value),sizeof(int)) < 0)
372 if (wl_get_val(dev, "qtxpower", &(wrqu->txpower.value), sizeof(int)) < 0)
375 wrqu->txpower.value &= ~WL_TXPWR_OVERRIDE;
377 wrqu->txpower.fixed = 0;
378 wrqu->txpower.disabled = 0;
379 wrqu->txpower.flags = IW_TXPOW_MWATT;
386 if (wl_get_val(dev, "qtxpower", &override, sizeof(int)) < 0)
389 wrqu->txpower.value |= override & WL_TXPWR_OVERRIDE;
391 if (wrqu->txpower.flags != IW_TXPOW_MWATT)
394 if (wl_set_val(dev, "qtxpower", &wrqu->txpower.value, sizeof(int)) < 0)
400 if (wl_ioctl(dev, WLC_GET_WEP, &val, sizeof(val)) < 0)
404 wrqu->data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
406 wrqu->data.flags = IW_ENCODE_DISABLED;
415 return wlcompat_ioctl_getiwrange(dev, extra);
420 int ap = -1, infra = -1, passive = 0, wet = 0;
422 switch (wrqu->mode) {
423 case IW_MODE_MONITOR:
447 if (wl_ioctl(dev, WLC_SET_PASSIVE, &passive, sizeof(passive)) < 0)
449 if (wl_ioctl(dev, WLC_SET_MONITOR, &passive, sizeof(passive)) < 0)
451 if (wl_ioctl(dev, WLC_SET_WET, &wet, sizeof(wet)) < 0)
454 if (wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap)) < 0)
457 if (wl_ioctl(dev, WLC_SET_INFRA, &infra, sizeof(infra)) < 0)
465 int ap, infra, wet, passive;
467 if (wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0)
469 if (wl_ioctl(dev, WLC_GET_INFRA, &infra, sizeof(infra)) < 0)
471 if (wl_ioctl(dev, WLC_GET_PASSIVE, &passive, sizeof(passive)) < 0)
473 if (wl_ioctl(dev, WLC_GET_WET, &wet, sizeof(wet)) < 0)
477 wrqu->mode = IW_MODE_MONITOR;
479 wrqu->mode = IW_MODE_ADHOC;
482 wrqu->mode = IW_MODE_MASTER;
485 wrqu->mode = IW_MODE_REPEAT;
487 wrqu->mode = IW_MODE_INFRA;
495 if (info->cmd >= SIOCIWFIRSTPRIV)
496 return wlcompat_private_ioctl(dev, info, wrqu, extra);
505 static const iw_handler wlcompat_handler[] = {
506 NULL, /* SIOCSIWCOMMIT */
507 wlcompat_ioctl, /* SIOCGIWNAME */
508 NULL, /* SIOCSIWNWID */
509 NULL, /* SIOCGIWNWID */
510 wlcompat_ioctl, /* SIOCSIWFREQ */
511 wlcompat_ioctl, /* SIOCGIWFREQ */
512 wlcompat_ioctl, /* SIOCSIWMODE */
513 wlcompat_ioctl, /* SIOCGIWMODE */
514 NULL, /* SIOCSIWSENS */
515 NULL, /* SIOCGIWSENS */
516 NULL, /* SIOCSIWRANGE, unused */
517 wlcompat_ioctl, /* SIOCGIWRANGE */
518 NULL, /* SIOCSIWPRIV */
519 NULL, /* SIOCGIWPRIV */
520 NULL, /* SIOCSIWSTATS */
521 NULL, /* SIOCGIWSTATS */
522 iw_handler_set_spy, /* SIOCSIWSPY */
523 iw_handler_get_spy, /* SIOCGIWSPY */
524 iw_handler_set_thrspy, /* SIOCSIWTHRSPY */
525 iw_handler_get_thrspy, /* SIOCGIWTHRSPY */
526 wlcompat_ioctl, /* SIOCSIWAP */
527 wlcompat_ioctl, /* SIOCGIWAP */
528 NULL, /* -- hole -- */
529 NULL, /* SIOCGIWAPLIST */
530 wlcompat_set_scan, /* SIOCSIWSCAN */
531 wlcompat_get_scan, /* SIOCGIWSCAN */
532 wlcompat_ioctl, /* SIOCSIWESSID */
533 wlcompat_ioctl, /* SIOCGIWESSID */
534 NULL, /* SIOCSIWNICKN */
535 NULL, /* SIOCGIWNICKN */
536 NULL, /* -- hole -- */
537 NULL, /* -- hole -- */
538 NULL, /* SIOCSIWRATE */
539 NULL, /* SIOCGIWRATE */
540 wlcompat_ioctl, /* SIOCSIWRTS */
541 wlcompat_ioctl, /* SIOCGIWRTS */
542 wlcompat_ioctl, /* SIOCSIWFRAG */
543 wlcompat_ioctl, /* SIOCGIWFRAG */
544 wlcompat_ioctl, /* SIOCSIWTXPOW */
545 wlcompat_ioctl, /* SIOCGIWTXPOW */
546 NULL, /* SIOCSIWRETRY */
547 NULL, /* SIOCGIWRETRY */
548 NULL, /* SIOCSIWENCODE */
549 wlcompat_ioctl, /* SIOCGIWENCODE */
552 #define PRIV_SET_MONITOR SIOCIWFIRSTPRIV + 0
553 #define PRIV_GET_MONITOR SIOCIWFIRSTPRIV + 1
554 #define PRIV_SET_TXPWR_LIMIT SIOCIWFIRSTPRIV + 2
555 #define PRIV_GET_TXPWR_LIMIT SIOCIWFIRSTPRIV + 3
557 static const struct iw_priv_args wlcompat_private_args[] =
560 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
566 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
569 { PRIV_SET_TXPWR_LIMIT,
570 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
574 { PRIV_GET_TXPWR_LIMIT,
576 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
581 static int wlcompat_private_ioctl(struct net_device *dev,
582 struct iw_request_info *info,
583 union iwreq_data *wrqu,
586 int *value = (int *) wrqu->name;
589 case PRIV_SET_MONITOR:
591 if (wl_ioctl(dev, WLC_SET_MONITOR, value, sizeof(int)) < 0)
596 case PRIV_GET_MONITOR:
598 if (wl_ioctl(dev, WLC_GET_MONITOR, extra, sizeof(int)) < 0)
603 case PRIV_SET_TXPWR_LIMIT:
608 if (wl_get_val(dev, "qtxpower", &val, sizeof(int)) < 0)
612 val |= WL_TXPWR_OVERRIDE;
614 val &= ~WL_TXPWR_OVERRIDE;
616 if (wl_set_val(dev, "qtxpower", &val, sizeof(int)) < 0)
621 case PRIV_GET_TXPWR_LIMIT:
623 if (wl_get_val(dev, "qtxpower", value, sizeof(int)) < 0)
626 *value = ((*value & WL_TXPWR_OVERRIDE) == WL_TXPWR_OVERRIDE ? 1 : 0);
640 static const iw_handler wlcompat_private[] =
642 wlcompat_private_ioctl,
643 wlcompat_private_ioctl,
644 wlcompat_private_ioctl,
645 wlcompat_private_ioctl
649 static const struct iw_handler_def wlcompat_handler_def =
651 .standard = (iw_handler *) wlcompat_handler,
652 .num_standard = sizeof(wlcompat_handler)/sizeof(iw_handler),
653 .private = wlcompat_private,
654 .num_private = sizeof(wlcompat_private)/sizeof(iw_handler),
655 .private_args = wlcompat_private_args,
656 .num_private_args = sizeof(wlcompat_private_args)/sizeof(struct iw_priv_args),
661 static int (*old_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
662 void print_buffer(int len, unsigned char *buf) {
665 for (x=0;x<len && x<180 ;x++) {
668 printk("%02X",buf[x]);
676 static int new_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) {
678 printk("dev: %s ioctl: 0x%04x\n",dev->name,cmd);
679 if (cmd==SIOCDEVPRIVATE) {
680 wl_ioctl_t *ioc = (wl_ioctl_t *)ifr->ifr_data;
681 unsigned char *buf = ioc->buf;
682 printk(" cmd: %d buf: 0x%08x len: %d\n",ioc->cmd,&(ioc->buf),ioc->len);
684 print_buffer(ioc->len, buf);
685 ret = old_ioctl(dev,ifr,cmd);
687 print_buffer(ioc->len, buf);
688 printk(" ret: %d\n", ret);
690 ret = old_ioctl(dev,ifr,cmd);
696 static int __init wlcompat_init()
699 char *devname = "eth0";
701 while (!found && (dev = dev_get_by_name(devname))) {
702 if ((wl_ioctl(dev, WLC_GET_MAGIC, &i, sizeof(i)) == 0) && i == WLC_IOCTL_MAGIC)
708 printk("No Broadcom devices found.\n");
714 old_ioctl = dev->do_ioctl;
715 dev->do_ioctl = new_ioctl;
717 dev->wireless_handlers = (struct iw_handler_def *)&wlcompat_handler_def;
721 static void __exit wlcompat_exit()
723 dev->wireless_handlers = NULL;
725 dev->do_ioctl = old_ioctl;
731 MODULE_AUTHOR("openwrt.org");
732 MODULE_LICENSE("GPL");
734 module_init(wlcompat_init);
735 module_exit(wlcompat_exit);