1 /*
2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /*
7 * Copyright (c) 2001 Atsushi Onoe
8 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * Alternatively, this software may be distributed under the terms of the
23 * GNU General Public License ("GPL") version 2 as published by the Free
24 * Software Foundation.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
27 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
28 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
29 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
30 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
31 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
35 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 /*
39 * IEEE 802.11 generic handler
40 */
41
42 #include <sys/param.h>
43 #include <sys/types.h>
44 #include <sys/cmn_err.h>
45 #include <sys/modctl.h>
46 #include <sys/stropts.h>
47 #include <sys/door.h>
48 #include <sys/mac_provider.h>
49 #include "net80211_impl.h"
50
51 uint32_t ieee80211_debug = 0x0; /* debug msg flags */
52
53 const char *ieee80211_phymode_name[] = {
54 "auto", /* IEEE80211_MODE_AUTO */
55 "11a", /* IEEE80211_MODE_11A */
56 "11b", /* IEEE80211_MODE_11B */
57 "11g", /* IEEE80211_MODE_11G */
58 "FH", /* IEEE80211_MODE_FH */
59 "turboA", /* IEEE80211_MODE_TURBO_A */
60 "turboG", /* IEEE80211_MODE_TURBO_G */
61 "sturboA", /* IEEE80211_MODE_STURBO_A */
62 "11na", /* IEEE80211_MODE_11NA */
63 "11ng", /* IEEE80211_MODE_11NG */
64 };
65
66 #define IEEE80211_DPRINT(_level, _fmt) do { \
67 _NOTE(CONSTCOND) \
68 va_list ap; \
69 va_start(ap, (_fmt)); \
70 vcmn_err((_level), (_fmt), ap); \
71 va_end(ap); \
72 _NOTE(CONSTCOND) \
73 } while (0)
74
75 /*
76 * Print error messages
77 */
78 void
79 ieee80211_err(const int8_t *fmt, ...)
80 {
81 IEEE80211_DPRINT(CE_WARN, fmt);
82 }
83
84 /*
85 * Print debug messages
86 */
87 void
88 ieee80211_dbg(uint32_t flag, const int8_t *fmt, ...)
89 {
90 if (flag & ieee80211_debug)
91 IEEE80211_DPRINT(CE_CONT, fmt);
92 }
93
94 /*
95 * Alloc memory, and save the size
96 */
97 void *
98 ieee80211_malloc(size_t size)
99 {
100 void *p = kmem_zalloc((size + 4), KM_SLEEP);
101 *(int *)p = size;
102 p = (char *)p + 4;
103
104 return (p);
105 }
106
107 void
108 ieee80211_free(void *p)
109 {
110 void *tp = (char *)p - 4;
111 kmem_free((char *)p - 4, *(int *)tp + 4);
112 }
113
114 void
115 ieee80211_mac_update(ieee80211com_t *ic)
116 {
117 wifi_data_t wd = { 0 };
118 ieee80211_node_t *in;
119
120 /*
121 * We can send data now; update the fastpath with our
122 * current associated BSSID and other relevant settings.
123 */
124 in = ic->ic_bss;
125 wd.wd_secalloc = ieee80211_crypto_getciphertype(ic);
126 wd.wd_opmode = ic->ic_opmode;
127 IEEE80211_ADDR_COPY(wd.wd_bssid, in->in_bssid);
128 wd.wd_qospad = 0;
129 if (in->in_flags & (IEEE80211_NODE_QOS|IEEE80211_NODE_HT)) {
130 wd.wd_qospad = 2;
131 if (ic->ic_flags & IEEE80211_F_DATAPAD)
132 wd.wd_qospad = roundup(wd.wd_qospad, sizeof (uint32_t));
133 }
134 (void) mac_pdata_update(ic->ic_mach, &wd, sizeof (wd));
135 mac_tx_update(ic->ic_mach);
136 ieee80211_dbg(IEEE80211_MSG_ANY, "ieee80211_mac_update"
137 "(cipher = %d)\n", wd.wd_secalloc);
138 }
139
140 /*
141 * ieee80211_event_thread
142 * open door of wpa, send event to wpad service
143 */
144 static void
145 ieee80211_event_thread(void *arg)
146 {
147 ieee80211com_t *ic = arg;
148 door_handle_t event_door = NULL; /* Door for upcalls */
149 wl_events_t ev;
150 door_arg_t darg;
151
152 mutex_enter(&ic->ic_doorlock);
153
154 ev.event = ic->ic_eventq[ic->ic_evq_head];
155 ic->ic_evq_head ++;
156 if (ic->ic_evq_head >= MAX_EVENT)
157 ic->ic_evq_head = 0;
158
159 ieee80211_dbg(IEEE80211_MSG_DEBUG, "ieee80211_event(%d)\n", ev.event);
160 /*
161 * Locate the door used for upcalls
162 */
163 if (door_ki_open(ic->ic_wpadoor, &event_door) != 0) {
164 ieee80211_err("ieee80211_event: door_ki_open(%s) failed\n",
165 ic->ic_wpadoor);
166 goto out;
167 }
168
169 darg.data_ptr = (char *)&ev;
170 darg.data_size = sizeof (wl_events_t);
171 darg.desc_ptr = NULL;
172 darg.desc_num = 0;
173 darg.rbuf = NULL;
174 darg.rsize = 0;
175
176 if (door_ki_upcall_limited(event_door, &darg, NULL, SIZE_MAX, 0) != 0) {
177 ieee80211_err("ieee80211_event: door_ki_upcall() failed\n");
178 }
179
180 if (event_door) { /* release our hold (if any) */
181 door_ki_rele(event_door);
182 }
183
184 out:
185 mutex_exit(&ic->ic_doorlock);
186 }
187
188 /*
189 * Notify state transition event message to WPA daemon
190 */
191 void
192 ieee80211_notify(ieee80211com_t *ic, wpa_event_type event)
193 {
194 if ((ic->ic_flags & IEEE80211_F_WPA) == 0)
195 return; /* Not running on WPA mode */
196
197 ic->ic_eventq[ic->ic_evq_tail] = event;
198 ic->ic_evq_tail ++;
199 if (ic->ic_evq_tail >= MAX_EVENT) ic->ic_evq_tail = 0;
200
201 /* async */
202 (void) timeout(ieee80211_event_thread, (void *)ic, 0);
203 }
204
205 /*
206 * Register WPA door
207 */
208 void
209 ieee80211_register_door(ieee80211com_t *ic, const char *drvname, int inst)
210 {
211 (void) snprintf(ic->ic_wpadoor, MAX_IEEE80211STR, "%s_%s%d",
212 WPA_DOOR, drvname, inst);
213 }
214
215 /*
216 * Default reset method for use with the ioctl support. This
217 * method is invoked after any state change in the 802.11
218 * layer that should be propagated to the hardware but not
219 * require re-initialization of the 802.11 state machine (e.g
220 * rescanning for an ap). We always return ENETRESET which
221 * should cause the driver to re-initialize the device. Drivers
222 * can override this method to implement more optimized support.
223 */
224 /* ARGSUSED */
225 static int
226 ieee80211_default_reset(ieee80211com_t *ic)
227 {
228 return (ENETRESET);
229 }
230
231 /*
232 * Convert channel to IEEE channel number.
233 */
234 uint32_t
235 ieee80211_chan2ieee(ieee80211com_t *ic, struct ieee80211_channel *ch)
236 {
237 if ((ic->ic_sup_channels <= ch) &&
238 (ch <= &ic->ic_sup_channels[IEEE80211_CHAN_MAX])) {
239 return (ch - ic->ic_sup_channels);
240 } else if (ch == IEEE80211_CHAN_ANYC) {
241 return (IEEE80211_CHAN_ANY);
242 } else if (ch != NULL) {
243 ieee80211_err("invalid channel freq %u flags %x\n",
244 ch->ich_freq, ch->ich_flags);
245 return (0);
246 }
247 ieee80211_err("invalid channel (NULL)\n"); /* ch == NULL */
248 return (0);
249 }
250
251 /*
252 * Convert IEEE channel number to MHz frequency.
253 * chan IEEE channel number
254 * flags specify whether the frequency is in the 2GHz ISM
255 * band or the 5GHz band
256 *
257 * 802.11b 2GHz: 14 channels, each 5 MHz wide. Channel 1 is placed
258 * at 2.412 GHz, channel 2 at 2.417 GHz, and so on up to channel 13
259 * at 2.472 GHz. Channel 14 was defined especially for operation in
260 * Japan, and has a center frequency 2.484 GHz.
261 * 802.11g 2GHz: adopts the frequency plan of 802.11b. Japan only
262 * allows 802.11g operation in channels 1-13
263 * 802.11a 5GHz: starting every 5 MHz
264 * 802.11b/g channels 15-24 (2512-2692) are used by some implementation
265 * (Atheros etc.)
266 */
267 uint32_t
268 ieee80211_ieee2mhz(uint32_t chan, uint32_t flags)
269 {
270 if (flags & IEEE80211_CHAN_2GHZ) { /* 2GHz band */
271 if (chan == 14)
272 return (2484);
273 if (chan < 14)
274 return (2412 + (chan - 1) * 5);
275 else
276 return (2512 + ((chan - 15) * 20));
277 } else if (flags & IEEE80211_CHAN_5GHZ) { /* 5Ghz band */
278 return (5000 + (chan * 5)); /* OFDM */
279 } else { /* either, guess */
280 if (chan == 14)
281 return (2484);
282 if (chan < 14) /* 0-13 */
283 return (2412 + (chan - 1) * 5);
284 if (chan < 27) /* 15-26 */
285 return (2512 + ((chan - 15) * 20));
286 return (5000 + (chan * 5));
287 }
288 }
289
290 /*
291 * Do late attach work. It must be called by the driver after
292 * calling ieee80211_attach() and before calling most ieee80211
293 * functions.
294 */
295 void
296 ieee80211_media_init(ieee80211com_t *ic)
297 {
298 /*
299 * Do late attach work that must wait for any subclass
300 * (i.e. driver) work such as overriding methods.
301 */
302 ieee80211_node_lateattach(ic);
303 }
304
305 /*
306 * Start Watchdog timer. After count down timer(s), ic_watchdog
307 * will be called
308 */
309 void
310 ieee80211_start_watchdog(ieee80211com_t *ic, uint32_t timer)
311 {
312 if (ic->ic_watchdog_timer == 0 && ic->ic_watchdog != NULL) {
313 ic->ic_watchdog_timer = timeout(ic->ic_watchdog, ic,
314 drv_usectohz(1000000 * timer));
315 }
316 }
317
318 /*
319 * Stop watchdog timer.
320 */
321 void
322 ieee80211_stop_watchdog(ieee80211com_t *ic)
323 {
324 if (ic->ic_watchdog_timer != 0) {
325 if (ic->ic_watchdog != NULL)
326 (void) untimeout(ic->ic_watchdog_timer);
327 ic->ic_watchdog_timer = 0;
328 }
329 }
330
331 /*
332 * Called from a driver's xxx_watchdog routine. It is used to
333 * perform periodic cleanup of state for net80211, as well as
334 * timeout scans.
335 */
336 void
337 ieee80211_watchdog(void *arg)
338 {
339 ieee80211com_t *ic = arg;
340 struct ieee80211_impl *im = ic->ic_private;
341 ieee80211_node_table_t *nt;
342 int inact_timer = 0;
343
344 if (ic->ic_state == IEEE80211_S_INIT)
345 return;
346
347 IEEE80211_LOCK(ic);
348 if ((im->im_mgt_timer != 0) && (--im->im_mgt_timer == 0)) {
349 IEEE80211_UNLOCK(ic);
350 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
351 IEEE80211_LOCK(ic);
352 }
353
354 nt = &ic->ic_scan;
355 if (nt->nt_inact_timer != 0) {
356 if (--nt->nt_inact_timer == 0)
357 nt->nt_timeout(nt);
358 inact_timer += nt->nt_inact_timer;
359 }
360 nt = &ic->ic_sta;
361 if (nt->nt_inact_timer != 0) {
362 if (--nt->nt_inact_timer == 0)
363 nt->nt_timeout(nt);
364 inact_timer += nt->nt_inact_timer;
365 }
366
367 IEEE80211_UNLOCK(ic);
368
369 if (im->im_mgt_timer != 0 || inact_timer > 0)
370 ieee80211_start_watchdog(ic, 1);
371 }
372
373 /*
374 * Set the current phy mode and recalculate the active channel
375 * set and supported rates based on the available channels for
376 * this mode. Also select a new BSS channel if the current one
377 * is inappropriate for this mode.
378 * This function is called by net80211, and not intended to be
379 * called directly.
380 */
381 static int
382 ieee80211_setmode(ieee80211com_t *ic, enum ieee80211_phymode mode)
383 {
384 static const uint32_t chanflags[] = {
385 0, /* IEEE80211_MODE_AUTO */
386 IEEE80211_CHAN_A, /* IEEE80211_MODE_11A */
387 IEEE80211_CHAN_B, /* IEEE80211_MODE_11B */
388 IEEE80211_CHAN_PUREG, /* IEEE80211_MODE_11G */
389 IEEE80211_CHAN_FHSS, /* IEEE80211_MODE_FH */
390 IEEE80211_CHAN_T, /* IEEE80211_MODE_TURBO_A */
391 IEEE80211_CHAN_108G, /* IEEE80211_MODE_TURBO_G */
392 IEEE80211_CHAN_ST, /* IEEE80211_MODE_STURBO_A */
393 IEEE80211_CHAN_A, /* IEEE80211_MODE_11NA (check legacy) */
394 IEEE80211_CHAN_G, /* IEEE80211_MODE_11NG (check legacy) */
395 };
396 struct ieee80211_channel *ch;
397 uint32_t modeflags;
398 int i;
399 int achannels = 0;
400
401 /* validate new mode */
402 if ((ic->ic_modecaps & (1 << mode)) == 0) {
403 ieee80211_err("ieee80211_setmode(): mode %u not supported"
404 " (caps 0x%x)\n", mode, ic->ic_modecaps);
405 return (EINVAL);
406 }
407
408 /*
409 * Verify at least one channel is present in the available
410 * channel list before committing to the new mode.
411 * Calculate the active channel set.
412 */
413 ASSERT(mode < IEEE80211_N(chanflags));
414 modeflags = chanflags[mode];
415 bzero(ic->ic_chan_active, sizeof (ic->ic_chan_active));
416 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) {
417 ch = &ic->ic_sup_channels[i];
418 if (ch->ich_flags == 0)
419 continue;
420 if (mode == IEEE80211_MODE_AUTO) {
421 /* take anything but pure turbo channels */
422 if ((ch->ich_flags & ~IEEE80211_CHAN_TURBO) != 0) {
423 ieee80211_setbit(ic->ic_chan_active, i);
424 achannels++;
425 }
426 } else {
427 if ((ch->ich_flags & modeflags) == modeflags) {
428 ieee80211_setbit(ic->ic_chan_active, i);
429 achannels++;
430 }
431 }
432 }
433 if (achannels == 0) {
434 ieee80211_err("ieee80211_setmode(): "
435 "no channel found for mode %u\n", mode);
436 return (EINVAL);
437 }
438
439 /*
440 * If no current/default channel is setup or the current
441 * channel is wrong for the mode then pick the first
442 * available channel from the active list. This is likely
443 * not the right one.
444 */
445 if (ic->ic_ibss_chan == NULL ||
446 ieee80211_isclr(ic->ic_chan_active,
447 ieee80211_chan2ieee(ic, ic->ic_ibss_chan))) {
448 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) {
449 if (ieee80211_isset(ic->ic_chan_active, i)) {
450 ic->ic_ibss_chan = &ic->ic_sup_channels[i];
451 break;
452 }
453 }
454 }
455 /*
456 * If the desired channel is set but no longer valid then reset it.
457 */
458 if (ic->ic_des_chan != IEEE80211_CHAN_ANYC &&
459 ieee80211_isclr(ic->ic_chan_active,
460 ieee80211_chan2ieee(ic, ic->ic_des_chan))) {
461 ic->ic_des_chan = IEEE80211_CHAN_ANYC;
462 }
463
464 /*
465 * Do mode-specific rate setup.
466 */
467 if (mode == IEEE80211_MODE_11G || mode == IEEE80211_MODE_11B)
468 ieee80211_setbasicrates(&ic->ic_sup_rates[mode], mode);
469
470 /*
471 * Setup an initial rate set according to the
472 * current/default channel. This will be changed
473 * when scanning but must exist now so drivers have
474 * consistent state of ic_bsschan.
475 */
476 if (ic->ic_bss != NULL)
477 ic->ic_bss->in_rates = ic->ic_sup_rates[mode];
478 ic->ic_curmode = mode;
479 ieee80211_reset_erp(ic); /* reset ERP state */
480 ieee80211_wme_initparams(ic); /* reset WME stat */
481
482 return (0);
483 }
484
485 /*
486 * Return the phy mode for with the specified channel so the
487 * caller can select a rate set. This is problematic for channels
488 * where multiple operating modes are possible (e.g. 11g+11b).
489 * In those cases we defer to the current operating mode when set.
490 */
491 /* ARGSUSED */
492 enum ieee80211_phymode
493 ieee80211_chan2mode(ieee80211com_t *ic, struct ieee80211_channel *chan)
494 {
495 if (IEEE80211_IS_CHAN_HTA(chan))
496 return (IEEE80211_MODE_11NA);
497 else if (IEEE80211_IS_CHAN_HTG(chan))
498 return (IEEE80211_MODE_11NG);
499 else if (IEEE80211_IS_CHAN_108G(chan))
500 return (IEEE80211_MODE_TURBO_G);
501 else if (IEEE80211_IS_CHAN_ST(chan))
502 return (IEEE80211_MODE_STURBO_A);
503 else if (IEEE80211_IS_CHAN_T(chan))
504 return (IEEE80211_MODE_TURBO_A);
505 else if (IEEE80211_IS_CHAN_A(chan))
506 return (IEEE80211_MODE_11A);
507 else if (IEEE80211_IS_CHAN_ANYG(chan))
508 return (IEEE80211_MODE_11G);
509 else if (IEEE80211_IS_CHAN_B(chan))
510 return (IEEE80211_MODE_11B);
511 else if (IEEE80211_IS_CHAN_FHSS(chan))
512 return (IEEE80211_MODE_FH);
513
514 /* NB: should not get here */
515 ieee80211_err("cannot map channel to mode; freq %u flags 0x%x\n",
516 chan->ich_freq, chan->ich_flags);
517
518 return (IEEE80211_MODE_11B);
519 }
520
521 const struct ieee80211_rateset *
522 ieee80211_get_suprates(ieee80211com_t *ic, struct ieee80211_channel *c)
523 {
524 if (IEEE80211_IS_CHAN_HTA(c))
525 return (&ic->ic_sup_rates[IEEE80211_MODE_11A]);
526 if (IEEE80211_IS_CHAN_HTG(c)) {
527 return (&ic->ic_sup_rates[IEEE80211_MODE_11G]);
528 }
529 return (&ic->ic_sup_rates[ieee80211_chan2mode(ic, c)]);
530 }
531
532 /*
533 * Locate a channel given a frequency+flags. We cache
534 * the previous lookup to optimize swithing between two
535 * channels--as happens with dynamic turbo.
536 */
537 struct ieee80211_channel *
538 ieee80211_find_channel(ieee80211com_t *ic, int freq, int flags)
539 {
540 struct ieee80211_channel *c;
541 int i;
542
543 flags &= IEEE80211_CHAN_ALLTURBO;
544 /* brute force search */
545 for (i = 0; i < IEEE80211_CHAN_MAX; i++) {
546 c = &ic->ic_sup_channels[i];
547 if (c->ich_freq == freq &&
548 (c->ich_flags & IEEE80211_CHAN_ALLTURBO) == flags)
549 return (c);
550 }
551 return (NULL);
552 }
553
554 /*
555 * Return the size of the 802.11 header for a management or data frame.
556 */
557 int
558 ieee80211_hdrsize(const void *data)
559 {
560 const struct ieee80211_frame *wh = data;
561 int size = sizeof (struct ieee80211_frame);
562
563 /* NB: we don't handle control frames */
564 ASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) !=
565 IEEE80211_FC0_TYPE_CTL);
566 if ((wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS)
567 size += IEEE80211_ADDR_LEN;
568 if (IEEE80211_QOS_HAS_SEQ(wh))
569 size += sizeof (uint16_t);
570
571 return (size);
572 }
573
574 /*
575 * Return the space occupied by the 802.11 header and any
576 * padding required by the driver. This works for a
577 * management or data frame.
578 */
579 int
580 ieee80211_hdrspace(ieee80211com_t *ic, const void *data)
581 {
582 int size = ieee80211_hdrsize(data);
583 if (ic->ic_flags & IEEE80211_F_DATAPAD)
584 size = roundup(size, sizeof (uint32_t));
585 return (size);
586 }
587
588 /*
589 * Like ieee80211_hdrsize, but handles any type of frame.
590 */
591 int
592 ieee80211_anyhdrsize(const void *data)
593 {
594 const struct ieee80211_frame *wh = data;
595
596 if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
597 switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
598 case IEEE80211_FC0_SUBTYPE_CTS:
599 case IEEE80211_FC0_SUBTYPE_ACK:
600 return (sizeof (struct ieee80211_frame_ack));
601 case IEEE80211_FC0_SUBTYPE_BAR:
602 return (sizeof (struct ieee80211_frame_bar));
603 }
604 return (sizeof (struct ieee80211_frame_min));
605 } else
606 return (ieee80211_hdrsize(data));
607 }
608
609 /*
610 * Like ieee80211_hdrspace, but handles any type of frame.
611 */
612 int
613 ieee80211_anyhdrspace(ieee80211com_t *ic, const void *data)
614 {
615 int size = ieee80211_anyhdrsize(data);
616 if (ic->ic_flags & IEEE80211_F_DATAPAD)
617 size = roundup(size, sizeof (uint32_t));
618 return (size);
619 }
620
621 /*
622 * Allocate and setup a management frame of the specified
623 * size. We return the mblk and a pointer to the start
624 * of the contiguous data area that's been reserved based
625 * on the packet length.
626 */
627 mblk_t *
628 ieee80211_getmgtframe(uint8_t **frm, int pktlen)
629 {
630 mblk_t *mp;
631 int len;
632
633 len = sizeof (struct ieee80211_frame) + pktlen;
634 mp = allocb(len, BPRI_MED);
635 if (mp != NULL) {
636 *frm = mp->b_rptr + sizeof (struct ieee80211_frame);
637 mp->b_wptr = mp->b_rptr + len;
638 } else {
639 ieee80211_err("ieee80211_getmgtframe: "
640 "alloc frame failed, %d\n", len);
641 }
642 return (mp);
643 }
644
645 /*
646 * Send system messages to notify the device has joined a WLAN.
647 * This is an OS specific function. Solaris marks link status
648 * as up.
649 */
650 void
651 ieee80211_notify_node_join(ieee80211com_t *ic, ieee80211_node_t *in)
652 {
653 if (in == ic->ic_bss)
654 mac_link_update(ic->ic_mach, LINK_STATE_UP);
655 ieee80211_notify(ic, EVENT_ASSOC); /* notify WPA service */
656 }
657
658 /*
659 * Send system messages to notify the device has left a WLAN.
660 * This is an OS specific function. Solaris marks link status
661 * as down.
662 */
663 void
664 ieee80211_notify_node_leave(ieee80211com_t *ic, ieee80211_node_t *in)
665 {
666 if (in == ic->ic_bss)
667 mac_link_update(ic->ic_mach, LINK_STATE_DOWN);
668 ieee80211_notify(ic, EVENT_DISASSOC); /* notify WPA service */
669 }
670
671
672 /*
673 * Get 802.11 kstats defined in ieee802.11(5)
674 *
675 * Return 0 on success
676 */
677 int
678 ieee80211_stat(ieee80211com_t *ic, uint_t stat, uint64_t *val)
679 {
680 ASSERT(val != NULL);
681 IEEE80211_LOCK(ic);
682 switch (stat) {
683 case WIFI_STAT_TX_FRAGS:
684 *val = ic->ic_stats.is_tx_frags;
685 break;
686 case WIFI_STAT_MCAST_TX:
687 *val = ic->ic_stats.is_tx_mcast;
688 break;
689 case WIFI_STAT_TX_FAILED:
690 *val = ic->ic_stats.is_tx_failed;
691 break;
692 case WIFI_STAT_TX_RETRANS:
693 *val = ic->ic_stats.is_tx_retries;
694 break;
695 case WIFI_STAT_RTS_SUCCESS:
696 *val = ic->ic_stats.is_rts_success;
697 break;
698 case WIFI_STAT_RTS_FAILURE:
699 *val = ic->ic_stats.is_rts_failure;
700 break;
701 case WIFI_STAT_ACK_FAILURE:
702 *val = ic->ic_stats.is_ack_failure;
703 break;
704 case WIFI_STAT_RX_FRAGS:
705 *val = ic->ic_stats.is_rx_frags;
706 break;
707 case WIFI_STAT_MCAST_RX:
708 *val = ic->ic_stats.is_rx_mcast;
709 break;
710 case WIFI_STAT_RX_DUPS:
711 *val = ic->ic_stats.is_rx_dups;
712 break;
713 case WIFI_STAT_FCS_ERRORS:
714 *val = ic->ic_stats.is_fcs_errors;
715 break;
716 case WIFI_STAT_WEP_ERRORS:
717 *val = ic->ic_stats.is_wep_errors;
718 break;
719 }
720 IEEE80211_UNLOCK(ic);
721 return (0);
722 }
723
724 /*
725 * Attach network interface to the 802.11 support module. This
726 * function must be called before using any of the ieee80211
727 * functionss. The parameter "ic" MUST be initialized to tell
728 * net80211 about interface's capabilities.
729 */
730 void
731 ieee80211_attach(ieee80211com_t *ic)
732 {
733 struct ieee80211_impl *im;
734 struct ieee80211_channel *ch;
735 int i;
736
737 /* Check mandatory callback functions not NULL */
738 ASSERT(ic->ic_xmit != NULL);
739
740 mutex_init(&ic->ic_genlock, NULL, MUTEX_DRIVER, NULL);
741 mutex_init(&ic->ic_doorlock, NULL, MUTEX_DRIVER, NULL);
742
743 im = kmem_alloc(sizeof (ieee80211_impl_t), KM_SLEEP);
744 ic->ic_private = im;
745 cv_init(&im->im_scan_cv, NULL, CV_DRIVER, NULL);
746
747 /*
748 * Fill in 802.11 available channel set, mark
749 * all available channels as active, and pick
750 * a default channel if not already specified.
751 */
752 bzero(im->im_chan_avail, sizeof (im->im_chan_avail));
753 ic->ic_modecaps |= 1 << IEEE80211_MODE_AUTO;
754 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) {
755 ch = &ic->ic_sup_channels[i];
756 if (ch->ich_flags) {
757 /* Verify driver passed us valid data */
758 if (i != ieee80211_chan2ieee(ic, ch)) {
759 ieee80211_err("bad channel ignored: "
760 "freq %u flags%x number %u\n",
761 ch->ich_freq, ch->ich_flags, i);
762 ch->ich_flags = 0;
763 continue;
764 }
765 ieee80211_setbit(im->im_chan_avail, i);
766 /* Identify mode capabilities */
767 if (IEEE80211_IS_CHAN_A(ch))
768 ic->ic_modecaps |= 1 << IEEE80211_MODE_11A;
769 if (IEEE80211_IS_CHAN_B(ch))
770 ic->ic_modecaps |= 1 << IEEE80211_MODE_11B;
771 if (IEEE80211_IS_CHAN_PUREG(ch))
772 ic->ic_modecaps |= 1 << IEEE80211_MODE_11G;
773 if (IEEE80211_IS_CHAN_FHSS(ch))
774 ic->ic_modecaps |= 1 << IEEE80211_MODE_FH;
775 if (IEEE80211_IS_CHAN_T(ch))
776 ic->ic_modecaps |= 1 << IEEE80211_MODE_TURBO_A;
777 if (IEEE80211_IS_CHAN_108G(ch))
778 ic->ic_modecaps |= 1 << IEEE80211_MODE_TURBO_G;
779 if (IEEE80211_IS_CHAN_ST(ch))
780 ic->ic_modecaps |= 1 << IEEE80211_MODE_STURBO_A;
781 if (IEEE80211_IS_CHAN_HTA(ch))
782 ic->ic_modecaps |= 1 << IEEE80211_MODE_11NA;
783 if (IEEE80211_IS_CHAN_HTG(ch))
784 ic->ic_modecaps |= 1 << IEEE80211_MODE_11NG;
785 if (ic->ic_curchan == NULL) {
786 /* arbitrarily pick the first channel */
787 ic->ic_curchan = &ic->ic_sup_channels[i];
788 }
789 }
790 }
791 /* validate ic->ic_curmode */
792 if ((ic->ic_modecaps & (1 << ic->ic_curmode)) == 0)
793 ic->ic_curmode = IEEE80211_MODE_AUTO;
794 ic->ic_des_chan = IEEE80211_CHAN_ANYC; /* any channel is ok */
795 (void) ieee80211_setmode(ic, ic->ic_curmode);
796
797 if (ic->ic_caps & IEEE80211_C_WME) /* enable if capable */
798 ic->ic_flags |= IEEE80211_F_WME;
799 if (ic->ic_caps & IEEE80211_C_BURST)
800 ic->ic_flags |= IEEE80211_F_BURST;
801 ic->ic_bintval = IEEE80211_BINTVAL_DEFAULT;
802 ic->ic_lintval = ic->ic_bintval;
803 ic->ic_txpowlimit = IEEE80211_TXPOWER_MAX;
804 ic->ic_bmissthreshold = IEEE80211_HWBMISS_DEFAULT;
805
806 ic->ic_reset = ieee80211_default_reset;
807
808 ieee80211_node_attach(ic);
809 ieee80211_proto_attach(ic);
810 ieee80211_crypto_attach(ic);
811 ieee80211_ht_attach(ic);
812
813 ic->ic_watchdog_timer = 0;
814 }
815
816 /*
817 * Free any ieee80211 structures associated with the driver.
818 */
819 void
820 ieee80211_detach(ieee80211com_t *ic)
821 {
822 struct ieee80211_impl *im = ic->ic_private;
823
824 ieee80211_stop_watchdog(ic);
825 cv_destroy(&im->im_scan_cv);
826 kmem_free(im, sizeof (ieee80211_impl_t));
827
828 if (ic->ic_opt_ie != NULL)
829 ieee80211_free(ic->ic_opt_ie);
830
831 ieee80211_ht_detach(ic);
832 ieee80211_node_detach(ic);
833 ieee80211_crypto_detach(ic);
834
835 mutex_destroy(&ic->ic_genlock);
836 mutex_destroy(&ic->ic_doorlock);
837 }
838
839 static struct modlmisc i_wifi_modlmisc = {
840 &mod_miscops,
841 "IEEE80211 Kernel Module v2.0"
842 };
843
844 static struct modlinkage i_wifi_modlinkage = {
845 MODREV_1,
846 { &i_wifi_modlmisc, NULL }
847 };
848
849 /*
850 * modlinkage functions
851 */
852 int
853 _init(void)
854 {
855 return (mod_install(&i_wifi_modlinkage));
856 }
857
858 int
859 _fini(void)
860 {
861 return (mod_remove(&i_wifi_modlinkage));
862 }
863
864 int
865 _info(struct modinfo *modinfop)
866 {
867 return (mod_info(&i_wifi_modlinkage, modinfop));
868 }