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>
36 static struct net_device *dev;
37 char buf[WLC_IOCTL_MAXLEN];
39 /* The frequency of each channel in MHz */
40 const long channel_frequency[] = {
41 2412, 2417, 2422, 2427, 2432, 2437, 2442,
42 2447, 2452, 2457, 2462, 2467, 2472, 2484
44 #define NUM_CHANNELS ( sizeof(channel_frequency) / sizeof(channel_frequency[0]) )
48 static int wlcompat_private_ioctl(struct net_device *dev,
49 struct iw_request_info *info,
50 union iwreq_data *wrqu,
53 static int wl_ioctl(struct net_device *dev, int cmd, void *buf, int len)
55 mm_segment_t old_fs = get_fs();
62 strncpy(ifr.ifr_name, dev->name, IFNAMSIZ);
63 ifr.ifr_data = (caddr_t) &ioc;
65 ret = dev->do_ioctl(dev,&ifr,SIOCDEVPRIVATE);
70 static int wl_set_val(struct net_device *dev, char *var, void *val, int len)
75 /* check for overflow */
76 if ((buf_len = strlen(var)) + 1 + len > sizeof(buf))
82 /* append int value onto the end of the name string */
83 memcpy(&buf[buf_len], val, len);
86 return wl_ioctl(dev, WLC_SET_VAR, buf, buf_len);
89 static int wl_get_val(struct net_device *dev, char *var, void *val, int len)
94 /* check for overflow */
95 if (strlen(var) + 1 > sizeof(buf) || len > sizeof(buf))
99 if ((ret = wl_ioctl(dev, WLC_GET_VAR, buf, sizeof(buf))))
102 memcpy(val, buf, len);
106 int read_shmem(struct net_device *dev, int offset)
108 if (wl_ioctl(dev, WLC_GET_SHMEM, &offset, sizeof(offset)) < 0)
114 static int wlcompat_ioctl_getiwrange(struct net_device *dev,
118 struct iw_range *range;
120 range = (struct iw_range *) extra;
122 range->we_version_compiled = WIRELESS_EXT;
123 range->we_version_source = WIRELESS_EXT;
125 range->min_nwid = range->max_nwid = 0;
127 range->num_channels = NUM_CHANNELS;
129 for (i = 0; i < NUM_CHANNELS; i++) {
130 range->freq[k].i = i + 1;
131 range->freq[k].m = channel_frequency[i] * 100000;
132 range->freq[k].e = 1;
134 if (k >= IW_MAX_FREQUENCIES)
137 range->num_frequency = k;
138 range->sensitivity = 3;
140 /* nbd: don't know what this means, but other drivers set it this way */
141 range->pmp_flags = IW_POWER_PERIOD;
142 range->pmt_flags = IW_POWER_TIMEOUT;
143 range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_UNICAST_R;
146 range->max_pmp = 65535000;
148 range->max_pmt = 65535 * 1000;
151 if (wl_ioctl(dev, WLC_GET_RTS, &range->max_rts, sizeof(int)) < 0)
152 range->max_rts = 2347;
154 range->min_frag = 256;
156 if (wl_ioctl(dev, WLC_GET_FRAG, &range->max_frag, sizeof(int)) < 0)
157 range->max_frag = 2346;
159 range->txpower_capa = IW_TXPOW_MWATT;
165 static int wlcompat_set_scan(struct net_device *dev,
166 struct iw_request_info *info,
167 union iwreq_data *wrqu,
170 int ap = 0, oldap = 0;
171 wl_scan_params_t params;
173 memset(¶ms, 0, sizeof(params));
175 /* use defaults (same parameters as wl scan) */
176 memset(¶ms.bssid, 0xff, sizeof(params.bssid));
177 params.bss_type = DOT11_BSSTYPE_ANY;
178 params.scan_type = -1;
180 params.active_time = -1;
181 params.passive_time = -1;
182 params.home_time = -1;
184 /* can only scan in STA mode */
185 wl_ioctl(dev, WLC_GET_AP, &oldap, sizeof(oldap));
187 wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap));
189 if (wl_ioctl(dev, WLC_SCAN, ¶ms, 64) < 0)
193 wl_ioctl(dev, WLC_SET_AP, &oldap, sizeof(oldap));
199 static int wlcompat_get_scan(struct net_device *dev,
200 struct iw_request_info *info,
201 union iwreq_data *wrqu,
204 wl_scan_results_t *results = (wl_scan_results_t *) buf;
205 wl_bss_info_t *bss_info;
207 char *current_ev = extra;
209 char *end_buf = extra + IW_SCAN_MAX_DATA;
213 if (wl_ioctl(dev, WLC_SCAN_RESULTS, buf, WLC_IOCTL_MAXLEN) < 0)
216 bss_info = &(results->bss_info[0]);
217 info_ptr = (char *) bss_info;
218 for (i = 0; i < results->count; i++) {
220 /* send the cell address (must be sent first) */
222 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
223 memcpy(&iwe.u.ap_addr.sa_data, &bss_info->BSSID, sizeof(bss_info->BSSID));
224 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
227 iwe.cmd = SIOCGIWESSID;
228 iwe.u.data.length = bss_info->SSID_len;
229 if (iwe.u.data.length > IW_ESSID_MAX_SIZE)
230 iwe.u.data.length = IW_ESSID_MAX_SIZE;
231 iwe.u.data.flags = 1;
232 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss_info->SSID);
234 /* send frequency/channel info */
235 iwe.cmd = SIOCGIWFREQ;
237 iwe.u.freq.m = bss_info->channel;
238 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
240 /* add quality statistics */
242 iwe.u.qual.level = bss_info->RSSI;
243 iwe.u.qual.noise = bss_info->phy_noise;
245 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
247 /* send rate information */
248 iwe.cmd = SIOCGIWRATE;
249 current_val = current_ev + IW_EV_LCP_LEN;
250 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
252 for(j = 0 ; j < bss_info->rateset.count ; j++) {
253 iwe.u.bitrate.value = ((bss_info->rateset.rates[j] & 0x7f) * 500000);
254 current_val = iwe_stream_add_value(current_ev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN);
256 if((current_val - current_ev) > IW_EV_LCP_LEN)
257 current_ev = current_val;
259 info_ptr += sizeof(wl_bss_info_t);
260 if (bss_info->ie_length % 4)
261 info_ptr += bss_info->ie_length + 4 - (bss_info->ie_length % 4);
263 info_ptr += bss_info->ie_length;
264 bss_info = (wl_bss_info_t *) info_ptr;
267 wrqu->data.length = (current_ev - extra);
268 wrqu->data.flags = 0;
273 static int wlcompat_ioctl(struct net_device *dev,
274 struct iw_request_info *info,
275 union iwreq_data *wrqu,
280 strcpy(wrqu->name, "IEEE 802.11-DS");
286 if (wl_ioctl(dev,WLC_GET_CHANNEL, &ci, sizeof(ci)) < 0)
289 wrqu->freq.m = ci.target_channel;
295 if (wrqu->freq.e == 1) {
297 int f = wrqu->freq.m / 100000;
298 while ((channel < NUM_CHANNELS + 1) && (f != channel_frequency[channel]))
301 if (channel == NUM_CHANNELS) // channel not found
305 wrqu->freq.m = channel + 1;
307 if ((wrqu->freq.e == 0) && (wrqu->freq.m < 1000)) {
308 if (wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int)) < 0)
319 if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
322 if (wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0)
325 if (wl_ioctl(dev, (ap ? WLC_SET_BSSID : WLC_REASSOC), wrqu->ap_addr.sa_data, 6) < 0)
332 wrqu->ap_addr.sa_family = ARPHRD_ETHER;
333 if (wl_ioctl(dev,WLC_GET_BSSID,wrqu->ap_addr.sa_data,6) < 0)
341 if (wl_ioctl(dev,WLC_GET_SSID, &ssid, sizeof(wlc_ssid_t)) < 0)
344 wrqu->essid.flags = wrqu->data.flags = 1;
345 wrqu->essid.length = wrqu->data.length = ssid.SSID_len + 1;
346 memcpy(extra,ssid.SSID,ssid.SSID_len + 1);
352 memset(&ssid, 0, sizeof(ssid));
353 ssid.SSID_len = strlen(extra);
354 if (ssid.SSID_len > WLC_ESSID_MAX_SIZE)
355 ssid.SSID_len = WLC_ESSID_MAX_SIZE;
356 memcpy(ssid.SSID, extra, ssid.SSID_len);
357 if (wl_ioctl(dev, WLC_SET_SSID, &ssid, sizeof(ssid)) < 0)
363 if (wl_ioctl(dev,WLC_GET_RTS,&(wrqu->rts.value),sizeof(int)) < 0)
369 if (wl_ioctl(dev,WLC_SET_RTS,&(wrqu->rts.value),sizeof(int)) < 0)
375 if (wl_ioctl(dev,WLC_GET_FRAG,&(wrqu->frag.value),sizeof(int)) < 0)
381 if (wl_ioctl(dev,WLC_SET_FRAG,&(wrqu->frag.value),sizeof(int)) < 0)
387 if (wl_get_val(dev, "qtxpower", &(wrqu->txpower.value), sizeof(int)) < 0)
390 wrqu->txpower.value &= ~WL_TXPWR_OVERRIDE;
392 wrqu->txpower.fixed = 0;
393 wrqu->txpower.disabled = 0;
394 wrqu->txpower.flags = IW_TXPOW_MWATT;
401 if (wl_get_val(dev, "qtxpower", &override, sizeof(int)) < 0)
404 wrqu->txpower.value |= override & WL_TXPWR_OVERRIDE;
406 if (wrqu->txpower.flags != IW_TXPOW_MWATT)
409 if (wl_set_val(dev, "qtxpower", &wrqu->txpower.value, sizeof(int)) < 0)
416 if (wl_ioctl(dev, WLC_GET_WEP, &val, sizeof(val)) < 0)
423 for (key = val = 0; (key < 4) && (val == 0); key++) {
425 if (wl_ioctl(dev, WLC_GET_KEY_PRIMARY, &val, sizeof(val)) < 0)
429 wrqu->data.flags = IW_ENCODE_ENABLED;
434 magic_offset = read_shmem(dev, 0x56) * 2;
436 wrqu->data.flags |= key + 1;
437 wrqu->data.length = 16;
439 for (val = 0; val < 8; val++) {
440 buffer[val] = read_shmem(dev, magic_offset + (key * 16) + val * 2);
443 memset(extra, 0, 16);
444 memcpy(extra, buffer, 16);
446 wrqu->data.flags |= IW_ENCODE_NOKEY;
449 wrqu->data.flags = IW_ENCODE_DISABLED;
456 return wlcompat_ioctl_getiwrange(dev, extra);
461 int ap = -1, infra = -1, passive = 0, wet = 0;
463 switch (wrqu->mode) {
464 case IW_MODE_MONITOR:
488 if (wl_ioctl(dev, WLC_SET_PASSIVE, &passive, sizeof(passive)) < 0)
490 if (wl_ioctl(dev, WLC_SET_MONITOR, &passive, sizeof(passive)) < 0)
492 if (wl_ioctl(dev, WLC_SET_WET, &wet, sizeof(wet)) < 0)
495 if (wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap)) < 0)
498 if (wl_ioctl(dev, WLC_SET_INFRA, &infra, sizeof(infra)) < 0)
506 int ap, infra, wet, passive;
508 if (wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0)
510 if (wl_ioctl(dev, WLC_GET_INFRA, &infra, sizeof(infra)) < 0)
512 if (wl_ioctl(dev, WLC_GET_PASSIVE, &passive, sizeof(passive)) < 0)
514 if (wl_ioctl(dev, WLC_GET_WET, &wet, sizeof(wet)) < 0)
518 wrqu->mode = IW_MODE_MONITOR;
520 wrqu->mode = IW_MODE_ADHOC;
523 wrqu->mode = IW_MODE_MASTER;
526 wrqu->mode = IW_MODE_REPEAT;
528 wrqu->mode = IW_MODE_INFRA;
536 if (info->cmd >= SIOCIWFIRSTPRIV)
537 return wlcompat_private_ioctl(dev, info, wrqu, extra);
546 static const iw_handler wlcompat_handler[] = {
547 NULL, /* SIOCSIWCOMMIT */
548 wlcompat_ioctl, /* SIOCGIWNAME */
549 NULL, /* SIOCSIWNWID */
550 NULL, /* SIOCGIWNWID */
551 wlcompat_ioctl, /* SIOCSIWFREQ */
552 wlcompat_ioctl, /* SIOCGIWFREQ */
553 wlcompat_ioctl, /* SIOCSIWMODE */
554 wlcompat_ioctl, /* SIOCGIWMODE */
555 NULL, /* SIOCSIWSENS */
556 NULL, /* SIOCGIWSENS */
557 NULL, /* SIOCSIWRANGE, unused */
558 wlcompat_ioctl, /* SIOCGIWRANGE */
559 NULL, /* SIOCSIWPRIV */
560 NULL, /* SIOCGIWPRIV */
561 NULL, /* SIOCSIWSTATS */
562 NULL, /* SIOCGIWSTATS */
563 iw_handler_set_spy, /* SIOCSIWSPY */
564 iw_handler_get_spy, /* SIOCGIWSPY */
565 iw_handler_set_thrspy, /* SIOCSIWTHRSPY */
566 iw_handler_get_thrspy, /* SIOCGIWTHRSPY */
567 wlcompat_ioctl, /* SIOCSIWAP */
568 wlcompat_ioctl, /* SIOCGIWAP */
569 NULL, /* -- hole -- */
570 NULL, /* SIOCGIWAPLIST */
571 wlcompat_set_scan, /* SIOCSIWSCAN */
572 wlcompat_get_scan, /* SIOCGIWSCAN */
573 wlcompat_ioctl, /* SIOCSIWESSID */
574 wlcompat_ioctl, /* SIOCGIWESSID */
575 NULL, /* SIOCSIWNICKN */
576 NULL, /* SIOCGIWNICKN */
577 NULL, /* -- hole -- */
578 NULL, /* -- hole -- */
579 NULL, /* SIOCSIWRATE */
580 NULL, /* SIOCGIWRATE */
581 wlcompat_ioctl, /* SIOCSIWRTS */
582 wlcompat_ioctl, /* SIOCGIWRTS */
583 wlcompat_ioctl, /* SIOCSIWFRAG */
584 wlcompat_ioctl, /* SIOCGIWFRAG */
585 wlcompat_ioctl, /* SIOCSIWTXPOW */
586 wlcompat_ioctl, /* SIOCGIWTXPOW */
587 NULL, /* SIOCSIWRETRY */
588 NULL, /* SIOCGIWRETRY */
589 NULL, /* SIOCSIWENCODE */
590 wlcompat_ioctl, /* SIOCGIWENCODE */
593 static int wlcompat_private_ioctl(struct net_device *dev,
594 struct iw_request_info *info,
595 union iwreq_data *wrqu,
598 int *value = (int *) wrqu->name;
601 case WLCOMPAT_SET_MONITOR:
603 if (wl_ioctl(dev, WLC_SET_MONITOR, value, sizeof(int)) < 0)
608 case WLCOMPAT_GET_MONITOR:
610 if (wl_ioctl(dev, WLC_GET_MONITOR, extra, sizeof(int)) < 0)
615 case WLCOMPAT_SET_TXPWR_LIMIT:
620 if (wl_get_val(dev, "qtxpower", &val, sizeof(int)) < 0)
624 val |= WL_TXPWR_OVERRIDE;
626 val &= ~WL_TXPWR_OVERRIDE;
628 if (wl_set_val(dev, "qtxpower", &val, sizeof(int)) < 0)
633 case WLCOMPAT_GET_TXPWR_LIMIT:
635 if (wl_get_val(dev, "qtxpower", value, sizeof(int)) < 0)
638 *value = ((*value & WL_TXPWR_OVERRIDE) == WL_TXPWR_OVERRIDE ? 1 : 0);
642 case WLCOMPAT_SET_ANTDIV:
644 if (wl_ioctl(dev, WLC_SET_ANTDIV, value, sizeof(int)) < 0)
649 case WLCOMPAT_GET_ANTDIV:
651 if (wl_ioctl(dev, WLC_GET_ANTDIV, extra, sizeof(int)) < 0)
656 case WLCOMPAT_SET_TXANT:
658 if (wl_ioctl(dev, WLC_SET_TXANT, value, sizeof(int)) < 0)
663 case WLCOMPAT_GET_TXANT:
665 if (wl_ioctl(dev, WLC_GET_TXANT, extra, sizeof(int)) < 0)
679 static const struct iw_priv_args wlcompat_private_args[] =
681 { WLCOMPAT_SET_MONITOR,
682 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
686 { WLCOMPAT_GET_MONITOR,
688 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
691 { WLCOMPAT_SET_TXPWR_LIMIT,
692 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
696 { WLCOMPAT_GET_TXPWR_LIMIT,
698 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
701 { WLCOMPAT_SET_ANTDIV,
702 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
706 { WLCOMPAT_GET_ANTDIV,
708 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
711 { WLCOMPAT_SET_TXANT,
712 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
716 { WLCOMPAT_GET_TXANT,
718 IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1,
723 static const iw_handler wlcompat_private[] =
725 wlcompat_private_ioctl,
730 static const struct iw_handler_def wlcompat_handler_def =
732 .standard = (iw_handler *) wlcompat_handler,
733 .num_standard = sizeof(wlcompat_handler)/sizeof(iw_handler),
734 .private = wlcompat_private,
736 .private_args = wlcompat_private_args,
737 .num_private_args = sizeof(wlcompat_private_args) / sizeof(wlcompat_private_args[0])
742 void print_buffer(int len, unsigned char *buf) {
745 for (x=0;x<len && x<180 ;x++) {
748 printk("%02X",buf[x]);
757 static int (*old_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
758 static int new_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) {
760 struct iwreq *iwr = (struct iwreq *) ifr;
761 struct iw_request_info info;
764 printk("dev: %s ioctl: 0x%04x\n",dev->name,cmd);
767 if (cmd >= SIOCIWFIRSTPRIV) {
770 ret = wlcompat_private_ioctl(dev, &info, &(iwr->u), (char *) &(iwr->u));
772 } else if (cmd==SIOCDEVPRIVATE) {
773 wl_ioctl_t *ioc = (wl_ioctl_t *)ifr->ifr_data;
774 unsigned char *buf = ioc->buf;
775 printk(" cmd: %d buf: 0x%08x len: %d\n",ioc->cmd,&(ioc->buf),ioc->len);
777 print_buffer(ioc->len, buf);
778 ret = old_ioctl(dev,ifr,cmd);
780 print_buffer(ioc->len, buf);
781 printk(" ret: %d\n", ret);
784 ret = old_ioctl(dev,ifr,cmd);
789 static int __init wlcompat_init()
792 char *devname = "eth0";
794 while (!found && (dev = dev_get_by_name(devname))) {
795 if ((dev->wireless_handlers == NULL) && ((wl_ioctl(dev, WLC_GET_MAGIC, &i, sizeof(i)) == 0) && i == WLC_IOCTL_MAGIC))
801 printk("No Broadcom devices found.\n");
806 old_ioctl = dev->do_ioctl;
807 dev->do_ioctl = new_ioctl;
808 dev->wireless_handlers = (struct iw_handler_def *)&wlcompat_handler_def;
812 static void __exit wlcompat_exit()
814 dev->wireless_handlers = NULL;
815 dev->do_ioctl = old_ioctl;
820 MODULE_AUTHOR("openwrt.org");
821 MODULE_LICENSE("GPL");
823 module_init(wlcompat_init);
824 module_exit(wlcompat_exit);