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loader: Minor cosmetic changes.
[unleashed.git] / kernel / net / net80211 / net80211_proto.c
blob26dbf30b6fbbe548d7d23425bf3f773b96bdce01
1 /*
2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /*
7 * Copyright 2016 Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
8 */
9
10 /*
11 * Copyright (c) 2001 Atsushi Onoe
12 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
13 * All rights reserved.
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
17 * are met:
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
23 * 3. The name of the author may not be used to endorse or promote products
24 * derived from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
31 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
33 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
35 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
39 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 */
41
42 /*
43 * IEEE 802.11 protocol support
44 */
45
46 #include "net80211_impl.h"
47
48 /* tunables */
49 #define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */
50 #define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */
51
52 #define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2)
53
54 const char *ieee80211_mgt_subtype_name[] = {
55 "assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp",
56 "probe_req", "probe_resp", "reserved#6", "reserved#7",
57 "beacon", "atim", "disassoc", "auth",
58 "deauth", "reserved#13", "reserved#14", "reserved#15"
59 };
60 const char *ieee80211_ctl_subtype_name[] = {
61 "reserved#0", "reserved#1", "reserved#2", "reserved#3",
62 "reserved#3", "reserved#5", "reserved#6", "reserved#7",
63 "reserved#8", "reserved#9", "ps_poll", "rts",
64 "cts", "ack", "cf_end", "cf_end_ack"
65 };
66 const char *ieee80211_state_name[IEEE80211_S_MAX] = {
67 "INIT", /* IEEE80211_S_INIT */
68 "SCAN", /* IEEE80211_S_SCAN */
69 "AUTH", /* IEEE80211_S_AUTH */
70 "ASSOC", /* IEEE80211_S_ASSOC */
71 "RUN" /* IEEE80211_S_RUN */
72 };
73 const char *ieee80211_wme_acnames[] = {
74 "WME_AC_BE",
75 "WME_AC_BK",
76 "WME_AC_VI",
77 "WME_AC_VO",
78 "WME_UPSD",
79 };
80
81 static int ieee80211_newstate(ieee80211com_t *, enum ieee80211_state, int);
82
83 /*
84 * Initialize the interface softc, ic, with protocol management
85 * related data structures and functions.
86 */
87 void
88 ieee80211_proto_attach(ieee80211com_t *ic)
89 {
90 struct ieee80211_impl *im = ic->ic_private;
91
92 ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT;
93 ic->ic_fragthreshold = IEEE80211_FRAG_DEFAULT;
94 ic->ic_fixed_rate = IEEE80211_FIXED_RATE_NONE;
95 ic->ic_protmode = IEEE80211_PROT_CTSONLY;
96 im->im_bmiss_max = IEEE80211_BMISS_MAX;
97
98 ic->ic_wme.wme_hipri_switch_hysteresis =
99 AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
100
101 /* protocol state change handler */
102 ic->ic_newstate = ieee80211_newstate;
103
104 /* initialize management frame handlers */
105 ic->ic_recv_mgmt = ieee80211_recv_mgmt;
106 ic->ic_send_mgmt = ieee80211_send_mgmt;
107 }
108
109 /*
110 * Print a 802.11 frame header
111 */
112 void
113 ieee80211_dump_pkt(const uint8_t *buf, int32_t len, int32_t rate, int32_t rssi)
114 {
115 struct ieee80211_frame *wh;
116 int8_t buf1[100];
117 int8_t buf2[25];
118 int i;
119
120 bzero(buf1, sizeof (buf1));
121 bzero(buf2, sizeof (buf2));
122 wh = (struct ieee80211_frame *)buf;
123 switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
124 case IEEE80211_FC1_DIR_NODS:
125 (void) snprintf(buf2, sizeof (buf2), "NODS %s",
126 ieee80211_macaddr_sprintf(wh->i_addr2));
127 (void) strncat(buf1, buf2, sizeof (buf2));
128 (void) snprintf(buf2, sizeof (buf2), "->%s",
129 ieee80211_macaddr_sprintf(wh->i_addr1));
130 (void) strncat(buf1, buf2, sizeof (buf2));
131 (void) snprintf(buf2, sizeof (buf2), "(%s)",
132 ieee80211_macaddr_sprintf(wh->i_addr3));
133 (void) strncat(buf1, buf2, sizeof (buf2));
134 break;
135 case IEEE80211_FC1_DIR_TODS:
136 (void) snprintf(buf2, sizeof (buf2), "TODS %s",
137 ieee80211_macaddr_sprintf(wh->i_addr2));
138 (void) strncat(buf1, buf2, sizeof (buf2));
139 (void) snprintf(buf2, sizeof (buf2), "->%s",
140 ieee80211_macaddr_sprintf(wh->i_addr3));
141 (void) strncat(buf1, buf2, sizeof (buf2));
142 (void) snprintf(buf2, sizeof (buf2), "(%s)",
143 ieee80211_macaddr_sprintf(wh->i_addr1));
144 (void) strncat(buf1, buf2, sizeof (buf2));
145 break;
146 case IEEE80211_FC1_DIR_FROMDS:
147 (void) snprintf(buf2, sizeof (buf2), "FRDS %s",
148 ieee80211_macaddr_sprintf(wh->i_addr3));
149 (void) strncat(buf1, buf2, sizeof (buf2));
150 (void) snprintf(buf2, sizeof (buf2), "->%s",
151 ieee80211_macaddr_sprintf(wh->i_addr1));
152 (void) strncat(buf1, buf2, sizeof (buf2));
153 (void) snprintf(buf2, sizeof (buf2), "(%s)",
154 ieee80211_macaddr_sprintf(wh->i_addr2));
155 (void) strncat(buf1, buf2, sizeof (buf2));
156 break;
157 case IEEE80211_FC1_DIR_DSTODS:
158 (void) snprintf(buf2, sizeof (buf2), "DSDS %s",
159 ieee80211_macaddr_sprintf((uint8_t *)&wh[1]));
160 (void) strncat(buf1, buf2, sizeof (buf2));
161 (void) snprintf(buf2, sizeof (buf2), "->%s ",
162 ieee80211_macaddr_sprintf(wh->i_addr3));
163 (void) strncat(buf1, buf2, sizeof (buf2));
164 (void) snprintf(buf2, sizeof (buf2), "%s",
165 ieee80211_macaddr_sprintf(wh->i_addr2));
166 (void) strncat(buf1, buf2, sizeof (buf2));
167 (void) snprintf(buf2, sizeof (buf2), "->%s",
168 ieee80211_macaddr_sprintf(wh->i_addr1));
169 (void) strncat(buf1, buf2, sizeof (buf2));
170 break;
171 }
172 ieee80211_dbg(IEEE80211_MSG_ANY, "ieee80211_dump_pkt(): %s", buf1);
173 bzero(buf1, sizeof (buf1));
174
175 switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
176 case IEEE80211_FC0_TYPE_DATA:
177 (void) sprintf(buf2, "data");
178 break;
179 case IEEE80211_FC0_TYPE_MGT:
180 (void) snprintf(buf2, sizeof (buf2), "%s",
181 ieee80211_mgt_subtype_name[
182 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
183 >> IEEE80211_FC0_SUBTYPE_SHIFT]);
184 break;
185 default:
186 (void) snprintf(buf2, sizeof (buf2), "type#%d",
187 wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
188 break;
189 }
190 (void) strncat(buf1, buf2, sizeof (buf2));
191 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
192 (void) sprintf(buf2, " WEP");
193 (void) strcat(buf1, buf2);
194 }
195 if (rate >= 0) {
196 (void) snprintf(buf2, sizeof (buf2), " %dM", rate / 2);
197 (void) strncat(buf1, buf2, sizeof (buf2));
198 }
199 if (rssi >= 0) {
200 (void) snprintf(buf2, sizeof (buf2), " +%d", rssi);
201 (void) strncat(buf1, buf2, sizeof (buf2));
202 }
203 ieee80211_dbg(IEEE80211_MSG_ANY, "ieee80211_dump_pkt(): %s", buf1);
204 bzero(buf1, sizeof (buf1));
205
206 if (len > 0) {
207 for (i = 0; i < (len > 40 ? 40 : len); i++) {
208 if ((i & 0x03) == 0)
209 (void) strcat(buf1, " ");
210 (void) snprintf(buf2, 3, "%02x", buf[i]);
211 (void) strncat(buf1, buf2, 3);
212 }
213 ieee80211_dbg(IEEE80211_MSG_ANY, "ieee80211_dump_pkt(): %s",
214 buf1);
215 }
216 }
217
218 /*
219 * Adjust/Fix the specified node's rate table
220 *
221 * in node
222 * flag IEEE80211_F_DOSORT : sort the node's rate table
223 * IEEE80211_F_DONEGO : mark a rate as basic rate if it is
224 * a device's basic rate
225 * IEEE80211_F_DODEL : delete rates not supported by the device
226 * IEEE80211_F_DOFRATE: check if the fixed rate is supported by
227 * the device
228 *
229 * The highest bit of returned rate value is set to 1 on failure.
230 */
231 int
232 ieee80211_fix_rate(ieee80211_node_t *in,
233 struct ieee80211_rateset *nrs, int flags)
234 {
235 ieee80211com_t *ic = in->in_ic;
236 struct ieee80211_rateset *srs;
237 boolean_t ignore;
238 int i;
239 int okrate;
240 int badrate;
241 int fixedrate;
242 uint8_t r;
243
244 /*
245 * If the fixed rate check was requested but no
246 * fixed has been defined then just remove it.
247 */
248 if ((flags & IEEE80211_F_DOFRATE) &&
249 (ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE)) {
250 flags &= ~IEEE80211_F_DOFRATE;
251 }
252 if (in->in_chan == IEEE80211_CHAN_ANYC) {
253 return (IEEE80211_RATE_BASIC);
254 }
255 okrate = badrate = fixedrate = 0;
256 srs = &ic->ic_sup_rates[ieee80211_chan2mode(ic, in->in_chan)];
257 for (i = 0; i < nrs->ir_nrates; ) {
258 int j;
259
260 ignore = B_FALSE;
261 if (flags & IEEE80211_F_DOSORT) {
262 /*
263 * Sort rates.
264 */
265 for (j = i + 1; j < nrs->ir_nrates; j++) {
266 if (IEEE80211_RV(nrs->ir_rates[i]) >
267 IEEE80211_RV(nrs->ir_rates[j])) {
268 r = nrs->ir_rates[i];
269 nrs->ir_rates[i] = nrs->ir_rates[j];
270 nrs->ir_rates[j] = r;
271 }
272 }
273 }
274 r = IEEE80211_RV(nrs->ir_rates[i]);
275 badrate = r;
276
277 /*
278 * Check against supported rates.
279 */
280 for (j = 0; j < srs->ir_nrates; j++) {
281 if (r == IEEE80211_RV(srs->ir_rates[j])) {
282 /*
283 * Overwrite with the supported rate
284 * value so any basic rate bit is set.
285 * This insures that response we send
286 * to stations have the necessary basic
287 * rate bit set.
288 */
289 if (flags & IEEE80211_F_DONEGO)
290 nrs->ir_rates[i] = srs->ir_rates[j];
291 break;
292 }
293 }
294 if (j == srs->ir_nrates) {
295 /*
296 * A rate in the node's rate set is not
297 * supported. We just discard/ignore the rate.
298 * Note that this is important for 11b stations
299 * when they want to associate with an 11g AP.
300 */
301 ignore = B_TRUE;
302 }
303
304 if (flags & IEEE80211_F_DODEL) {
305 /*
306 * Delete unacceptable rates.
307 */
308 if (ignore) {
309 nrs->ir_nrates--;
310 for (j = i; j < nrs->ir_nrates; j++)
311 nrs->ir_rates[j] = nrs->ir_rates[j + 1];
312 nrs->ir_rates[j] = 0;
313 continue;
314 }
315 }
316 if (flags & IEEE80211_F_DOFRATE) {
317 /*
318 * Check any fixed rate is included.
319 */
320 if (r == ic->ic_fixed_rate)
321 fixedrate = r;
322 }
323 if (!ignore)
324 okrate = nrs->ir_rates[i];
325 i++;
326 }
327 if (okrate == 0 || ((flags & IEEE80211_F_DOFRATE) && fixedrate == 0))
328 return (badrate | IEEE80211_RATE_BASIC);
329 else
330 return (IEEE80211_RV(okrate));
331 }
332
333 /*
334 * Reset 11g-related state.
335 */
336 void
337 ieee80211_reset_erp(ieee80211com_t *ic)
338 {
339 ic->ic_flags &= ~IEEE80211_F_USEPROT;
340 /*
341 * Short slot time is enabled only when operating in 11g
342 * and not in an IBSS. We must also honor whether or not
343 * the driver is capable of doing it.
344 */
345 ieee80211_set_shortslottime(ic,
346 ic->ic_curmode == IEEE80211_MODE_11A);
347 /*
348 * Set short preamble and ERP barker-preamble flags.
349 */
350 if (ic->ic_curmode == IEEE80211_MODE_11A ||
351 (ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
352 ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
353 ic->ic_flags &= ~IEEE80211_F_USEBARKER;
354 } else {
355 ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
356 ic->ic_flags |= IEEE80211_F_USEBARKER;
357 }
358 }
359
360 /*
361 * Change current channel to be the next available channel
362 */
363 void
364 ieee80211_reset_chan(ieee80211com_t *ic)
365 {
366 struct ieee80211_channel *ch = ic->ic_curchan;
367
368 IEEE80211_LOCK(ic);
369 do {
370 if (++ch > &ic->ic_sup_channels[IEEE80211_CHAN_MAX])
371 ch = &ic->ic_sup_channels[0];
372 if (ieee80211_isset(ic->ic_chan_active,
373 ieee80211_chan2ieee(ic, ch))) {
374 break;
375 }
376 } while (ch != ic->ic_curchan);
377 ic->ic_curchan = ch;
378 IEEE80211_UNLOCK(ic);
379 }
380
381 /*
382 * Set the short slot time state and notify the driver.
383 */
384 void
385 ieee80211_set_shortslottime(ieee80211com_t *ic, boolean_t on)
386 {
387 if (on)
388 ic->ic_flags |= IEEE80211_F_SHSLOT;
389 else
390 ic->ic_flags &= ~IEEE80211_F_SHSLOT;
391 /* notify driver */
392 if (ic->ic_set_shortslot != NULL)
393 ic->ic_set_shortslot(ic, on);
394 }
395
396 /*
397 * Mark the basic rates for the 11g rate table based on the
398 * operating mode. For real 11g we mark all the 11b rates
399 * and 6, 12, and 24 OFDM. For 11b compatibility we mark only
400 * 11b rates. There's also a pseudo 11a-mode used to mark only
401 * the basic OFDM rates.
402 */
403 void
404 ieee80211_setbasicrates(struct ieee80211_rateset *rs,
405 enum ieee80211_phymode mode)
406 {
407 static const struct ieee80211_rateset basic[] = {
408 { 0 }, /* IEEE80211_MODE_AUTO */
409 { 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11A */
410 { 2, { 2, 4} }, /* IEEE80211_MODE_11B */
411 { 4, { 2, 4, 11, 22 } }, /* IEEE80211_MODE_11G mixed b/g */
412 { 0 }, /* IEEE80211_MODE_FH */
413 { 3, { 12, 24, 48 } }, /* IEEE80211_MODE_TURBO_A */
414 { 4, { 2, 4, 11, 22 } },
415 /* IEEE80211_MODE_TURBO_G (mixed b/g) */
416 { 0 }, /* IEEE80211_MODE_STURBO_A */
417 { 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11NA */
418 /* IEEE80211_MODE_11NG (mixed b/g) */
419 { 7, { 2, 4, 11, 22, 12, 24, 48 } }
420 };
421 int i, j;
422
423 ASSERT(mode < IEEE80211_MODE_MAX);
424 for (i = 0; i < rs->ir_nrates; i++) {
425 rs->ir_rates[i] &= IEEE80211_RATE_VAL;
426 for (j = 0; j < basic[mode].ir_nrates; j++) {
427 if (basic[mode].ir_rates[j] == rs->ir_rates[i]) {
428 rs->ir_rates[i] |= IEEE80211_RATE_BASIC;
429 break;
430 }
431 }
432 }
433 }
434
435 /*
436 * WME protocol support. The following parameters come from the spec.
437 */
438 typedef struct phyParamType {
439 uint8_t aifsn;
440 uint8_t logcwmin;
441 uint8_t logcwmax;
442 uint16_t txopLimit;
443 uint8_t acm;
444 } paramType;
445
446 static const paramType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
447 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_AUTO */
448 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11A */
449 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11B */
450 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11G */
451 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_FH */
452 { 2, 3, 5, 0, 0 }, /* IEEE80211_MODE_TURBO_A */
453 { 2, 3, 5, 0, 0 }, /* IEEE80211_MODE_TURBO_G */
454 { 2, 3, 5, 0, 0 }, /* IEEE80211_MODE_STURBO_A */
455 { 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11NA */
456 { 3, 4, 6, 0, 0 } /* IEEE80211_MODE_11NG */
457 };
458 static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
459 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_AUTO */
460 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11A */
461 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11B */
462 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11G */
463 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_FH */
464 { 7, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_A */
465 { 7, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_G */
466 { 7, 3, 10, 0, 0 }, /* IEEE80211_MODE_STURBO_A */
467 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NA */
468 { 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NG */
469 };
470 static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
471 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_AUTO */
472 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11A */
473 { 1, 3, 4, 188, 0 }, /* IEEE80211_MODE_11B */
474 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11G */
475 { 1, 3, 4, 188, 0 }, /* IEEE80211_MODE_FH */
476 { 1, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_A */
477 { 1, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_G */
478 { 1, 2, 3, 94, 0 }, /* IEEE80211_MODE_STURBO_A */
479 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NA */
480 { 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NG */
481 };
482 static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
483 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_AUTO */
484 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11A */
485 { 1, 2, 3, 102, 0 }, /* IEEE80211_MODE_11B */
486 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11G */
487 { 1, 2, 3, 102, 0 }, /* IEEE80211_MODE_FH */
488 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_A */
489 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_G */
490 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_STURBO_A */
491 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NA */
492 { 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NG */
493 };
494
495 static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
496 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_AUTO */
497 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11A */
498 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11B */
499 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11G */
500 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_FH */
501 { 2, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_A */
502 { 2, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_G */
503 { 2, 3, 10, 0, 0 }, /* IEEE80211_MODE_STURBO_A */
504 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NA */
505 { 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NG */
506 };
507 static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
508 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_AUTO */
509 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11A */
510 { 2, 3, 4, 188, 0 }, /* IEEE80211_MODE_11B */
511 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11G */
512 { 2, 3, 4, 188, 0 }, /* IEEE80211_MODE_FH */
513 { 2, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_A */
514 { 2, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_G */
515 { 2, 2, 3, 94, 0 }, /* IEEE80211_MODE_STURBO_A */
516 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NA */
517 { 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NG */
518 };
519 static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
520 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_AUTO */
521 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11A */
522 { 2, 2, 3, 102, 0 }, /* IEEE80211_MODE_11B */
523 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11G */
524 { 2, 2, 3, 102, 0 }, /* IEEE80211_MODE_FH */
525 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_A */
526 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_G */
527 { 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_STURBO_A */
528 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NA */
529 { 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NG */
530 };
531
532 void
533 ieee80211_wme_initparams(struct ieee80211com *ic)
534 {
535 struct ieee80211_wme_state *wme = &ic->ic_wme;
536 const paramType *pPhyParam, *pBssPhyParam;
537 struct wmeParams *wmep;
538 enum ieee80211_phymode mode;
539 int i;
540
541 if ((ic->ic_caps & IEEE80211_C_WME) == 0)
542 return;
543
544 /*
545 * Select mode; we can be called early in which case we
546 * always use auto mode. We know we'll be called when
547 * entering the RUN state with bsschan setup properly
548 * so state will eventually get set correctly
549 */
550 if (ic->ic_curchan != IEEE80211_CHAN_ANYC)
551 mode = ieee80211_chan2mode(ic, ic->ic_curchan);
552 else
553 mode = IEEE80211_MODE_AUTO;
554 for (i = 0; i < WME_NUM_AC; i++) {
555 switch (i) {
556 case WME_AC_BK:
557 pPhyParam = &phyParamForAC_BK[mode];
558 pBssPhyParam = &phyParamForAC_BK[mode];
559 break;
560 case WME_AC_VI:
561 pPhyParam = &phyParamForAC_VI[mode];
562 pBssPhyParam = &bssPhyParamForAC_VI[mode];
563 break;
564 case WME_AC_VO:
565 pPhyParam = &phyParamForAC_VO[mode];
566 pBssPhyParam = &bssPhyParamForAC_VO[mode];
567 break;
568 case WME_AC_BE:
569 default:
570 pPhyParam = &phyParamForAC_BE[mode];
571 pBssPhyParam = &bssPhyParamForAC_BE[mode];
572 break;
573 }
574
575 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
576 if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
577 wmep->wmep_acm = pPhyParam->acm;
578 wmep->wmep_aifsn = pPhyParam->aifsn;
579 wmep->wmep_logcwmin = pPhyParam->logcwmin;
580 wmep->wmep_logcwmax = pPhyParam->logcwmax;
581 wmep->wmep_txopLimit = pPhyParam->txopLimit;
582 } else {
583 wmep->wmep_acm = pBssPhyParam->acm;
584 wmep->wmep_aifsn = pBssPhyParam->aifsn;
585 wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
586 wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
587 wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
588
589 }
590 ieee80211_dbg(IEEE80211_MSG_WME, "ieee80211_wme_initparams: "
591 "%s chan [acm %u aifsn %u log2(cwmin) %u "
592 "log2(cwmax) %u txpoLimit %u]\n",
593 ieee80211_wme_acnames[i],
594 wmep->wmep_acm,
595 wmep->wmep_aifsn,
596 wmep->wmep_logcwmin,
597 wmep->wmep_logcwmax,
598 wmep->wmep_txopLimit);
599
600 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
601 wmep->wmep_acm = pBssPhyParam->acm;
602 wmep->wmep_aifsn = pBssPhyParam->aifsn;
603 wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
604 wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
605 wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
606 ieee80211_dbg(IEEE80211_MSG_WME, "ieee80211_wme_initparams: "
607 "%s bss [acm %u aifsn %u log2(cwmin) %u "
608 "log2(cwmax) %u txpoLimit %u]\n",
609 ieee80211_wme_acnames[i],
610 wmep->wmep_acm,
611 wmep->wmep_aifsn,
612 wmep->wmep_logcwmin,
613 wmep->wmep_logcwmax,
614 wmep->wmep_txopLimit);
615 }
616 /* NB: check ic_bss to avoid NULL deref on initial attach */
617 if (ic->ic_bss != NULL) {
618 /*
619 * Calculate agressive mode switching threshold based
620 * on beacon interval. This doesn't need locking since
621 * we're only called before entering the RUN state at
622 * which point we start sending beacon frames.
623 */
624 wme->wme_hipri_switch_thresh =
625 (HIGH_PRI_SWITCH_THRESH * ic->ic_bss->in_intval) / 100;
626 ieee80211_wme_updateparams(ic);
627 }
628 }
629
630 /*
631 * Update WME parameters for ourself and the BSS.
632 */
633 void
634 ieee80211_wme_updateparams(struct ieee80211com *ic)
635 {
636 static const paramType phyParam[IEEE80211_MODE_MAX] = {
637 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_AUTO */
638 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11A */
639 { 2, 5, 10, 64, 0 }, /* IEEE80211_MODE_11B */
640 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11G */
641 { 2, 5, 10, 64, 0 }, /* IEEE80211_MODE_FH */
642 { 1, 3, 10, 64, 0 }, /* IEEE80211_MODE_TURBO_A */
643 { 1, 3, 10, 64, 0 }, /* IEEE80211_MODE_TURBO_G */
644 { 1, 3, 10, 64, 0 }, /* IEEE80211_MODE_STURBO_A */
645 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11NA */
646 { 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11NG */
647 };
648 struct ieee80211_wme_state *wme = &ic->ic_wme;
649 const struct wmeParams *wmep;
650 struct wmeParams *chanp, *bssp;
651 enum ieee80211_phymode mode;
652 int i;
653
654 if ((ic->ic_caps & IEEE80211_C_WME) == 0)
655 return;
656
657 /* set up the channel access parameters for the physical device */
658 for (i = 0; i < WME_NUM_AC; i++) {
659 chanp = &wme->wme_chanParams.cap_wmeParams[i];
660 wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
661 chanp->wmep_aifsn = wmep->wmep_aifsn;
662 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
663 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
664 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
665
666 chanp = &wme->wme_bssChanParams.cap_wmeParams[i];
667 wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
668 chanp->wmep_aifsn = wmep->wmep_aifsn;
669 chanp->wmep_logcwmin = wmep->wmep_logcwmin;
670 chanp->wmep_logcwmax = wmep->wmep_logcwmax;
671 chanp->wmep_txopLimit = wmep->wmep_txopLimit;
672 }
673
674 /*
675 * Select mode; we can be called early in which case we
676 * always use auto mode. We know we'll be called when
677 * entering the RUN state with bsschan setup properly
678 * so state will eventually get set correctly
679 */
680 if (ic->ic_curchan != IEEE80211_CHAN_ANYC)
681 mode = ieee80211_chan2mode(ic, ic->ic_curchan);
682 else
683 mode = IEEE80211_MODE_AUTO;
684
685 /*
686 * This implements agressive mode as found in certain
687 * vendors' AP's. When there is significant high
688 * priority (VI/VO) traffic in the BSS throttle back BE
689 * traffic by using conservative parameters. Otherwise
690 * BE uses agressive params to optimize performance of
691 * legacy/non-QoS traffic.
692 */
693 if ((ic->ic_opmode == IEEE80211_M_HOSTAP &&
694 (wme->wme_flags & WME_F_AGGRMODE) != 0) ||
695 (ic->ic_opmode == IEEE80211_M_STA &&
696 (ic->ic_bss->in_flags & IEEE80211_NODE_QOS) == 0) ||
697 (ic->ic_flags & IEEE80211_F_WME) == 0) {
698 chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
699 bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
700
701 chanp->wmep_aifsn = bssp->wmep_aifsn = phyParam[mode].aifsn;
702 chanp->wmep_logcwmin = bssp->wmep_logcwmin =
703 phyParam[mode].logcwmin;
704 chanp->wmep_logcwmax = bssp->wmep_logcwmax =
705 phyParam[mode].logcwmax;
706 chanp->wmep_txopLimit = bssp->wmep_txopLimit =
707 (ic->ic_flags & IEEE80211_F_BURST) ?
708 phyParam[mode].txopLimit : 0;
709 ieee80211_dbg(IEEE80211_MSG_WME,
710 "ieee80211_wme_updateparams_locked: "
711 "%s [acm %u aifsn %u log2(cwmin) %u "
712 "log2(cwmax) %u txpoLimit %u]\n",
713 ieee80211_wme_acnames[WME_AC_BE],
714 chanp->wmep_acm,
715 chanp->wmep_aifsn,
716 chanp->wmep_logcwmin,
717 chanp->wmep_logcwmax,
718 chanp->wmep_txopLimit);
719 }
720
721 wme->wme_update(ic);
722
723 ieee80211_dbg(IEEE80211_MSG_WME, "ieee80211_wme_updateparams(): "
724 "WME params updated, cap_info 0x%x\n",
725 ic->ic_opmode == IEEE80211_M_STA ?
726 wme->wme_wmeChanParams.cap_info :
727 wme->wme_bssChanParams.cap_info);
728 }
729
730 /*
731 * Process STA mode beacon miss events. Send a direct probe request
732 * frame to the current ap bmiss_max times (w/o answer) before
733 * scanning for a new ap.
734 */
735 void
736 ieee80211_beacon_miss(ieee80211com_t *ic)
737 {
738 ieee80211_impl_t *im = ic->ic_private;
739
740 if (ic->ic_flags & IEEE80211_F_SCAN)
741 return;
742 ieee80211_dbg(IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
743 "%s\n", "beacon miss");
744
745 /*
746 * Our handling is only meaningful for stations that are
747 * associated; any other conditions else will be handled
748 * through different means (e.g. the tx timeout on mgt frames).
749 */
750 if (ic->ic_opmode != IEEE80211_M_STA ||
751 ic->ic_state != IEEE80211_S_RUN) {
752 return;
753 }
754
755 IEEE80211_LOCK(ic);
756 if (++im->im_bmiss_count < im->im_bmiss_max) {
757 /*
758 * Send a directed probe req before falling back to a scan;
759 * if we receive a response ic_bmiss_count will be reset.
760 * Some cards mistakenly report beacon miss so this avoids
761 * the expensive scan if the ap is still there.
762 */
763 IEEE80211_UNLOCK(ic);
764 (void) ieee80211_send_probereq(ic->ic_bss, ic->ic_macaddr,
765 ic->ic_bss->in_bssid, ic->ic_bss->in_bssid,
766 ic->ic_bss->in_essid, ic->ic_bss->in_esslen,
767 ic->ic_opt_ie, ic->ic_opt_ie_len);
768 return;
769 }
770 im->im_bmiss_count = 0;
771 IEEE80211_UNLOCK(ic);
772 ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
773 }
774
775 /*
776 * Manage state transition between INIT | AUTH | ASSOC | RUN.
777 */
778 static int
779 ieee80211_newstate(ieee80211com_t *ic, enum ieee80211_state nstate, int arg)
780 {
781 struct ieee80211_impl *im = ic->ic_private;
782 ieee80211_node_t *in;
783 enum ieee80211_state ostate;
784 wifi_data_t wd = { 0 };
785
786 IEEE80211_LOCK(ic);
787 ostate = ic->ic_state;
788 ieee80211_dbg(IEEE80211_MSG_STATE, "ieee80211_newstate(): "
789 "%s -> %s\n",
790 ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
791 ic->ic_state = nstate;
792 in = ic->ic_bss;
793 im->im_swbmiss_period = 0; /* Reset software beacon miss period */
794
795 switch (nstate) {
796 case IEEE80211_S_INIT:
797 IEEE80211_UNLOCK(ic);
798 switch (ostate) {
799 case IEEE80211_S_INIT:
800 return (0);
801 case IEEE80211_S_SCAN:
802 ieee80211_cancel_scan(ic);
803 break;
804 case IEEE80211_S_AUTH:
805 break;
806 case IEEE80211_S_ASSOC:
807 if (ic->ic_opmode == IEEE80211_M_STA) {
808 IEEE80211_SEND_MGMT(ic, in,
809 IEEE80211_FC0_SUBTYPE_DEAUTH,
810 IEEE80211_REASON_AUTH_LEAVE);
811 }
812 break;
813 case IEEE80211_S_RUN:
814 switch (ic->ic_opmode) {
815 case IEEE80211_M_STA:
816 IEEE80211_SEND_MGMT(ic, in,
817 IEEE80211_FC0_SUBTYPE_DEAUTH,
818 IEEE80211_REASON_AUTH_LEAVE);
819 ieee80211_sta_leave(ic, in);
820 break;
821 case IEEE80211_M_IBSS:
822 ieee80211_notify_node_leave(ic, in);
823 break;
824 default:
825 break;
826 }
827 break;
828 }
829 IEEE80211_LOCK(ic);
830 im->im_mgt_timer = 0;
831 ieee80211_reset_bss(ic);
832 break;
833 case IEEE80211_S_SCAN:
834 switch (ostate) {
835 case IEEE80211_S_INIT:
836 IEEE80211_UNLOCK(ic);
837 ieee80211_begin_scan(ic, (arg == 0) ? B_FALSE : B_TRUE);
838 return (0);
839 case IEEE80211_S_SCAN:
840 /*
841 * Scan next. If doing an active scan and the
842 * channel is not marked passive-only then send
843 * a probe request. Otherwise just listen for
844 * beacons on the channel.
845 */
846 if ((ic->ic_flags & IEEE80211_F_ASCAN) &&
847 !IEEE80211_IS_CHAN_PASSIVE(ic->ic_curchan)) {
848 IEEE80211_UNLOCK(ic);
849 (void) ieee80211_send_probereq(in,
850 ic->ic_macaddr, wifi_bcastaddr,
851 wifi_bcastaddr,
852 ic->ic_des_essid, ic->ic_des_esslen,
853 ic->ic_opt_ie, ic->ic_opt_ie_len);
854 return (0);
855 }
856 break;
857 case IEEE80211_S_RUN:
858 /* beacon miss */
859 ieee80211_dbg(IEEE80211_MSG_STATE,
860 "no recent beacons from %s, rescanning\n",
861 ieee80211_macaddr_sprintf(in->in_macaddr));
862 IEEE80211_UNLOCK(ic);
863 ieee80211_sta_leave(ic, in);
864 IEEE80211_LOCK(ic);
865 ic->ic_flags &= ~IEEE80211_F_SIBSS;
866 /* FALLTHRU */
867 case IEEE80211_S_AUTH:
868 case IEEE80211_S_ASSOC:
869 /* timeout restart scan */
870 in = ieee80211_find_node(&ic->ic_scan,
871 ic->ic_bss->in_macaddr);
872 if (in != NULL) {
873 in->in_fails++;
874 ieee80211_unref_node(&in);
875 }
876 break;
877 }
878 break;
879 case IEEE80211_S_AUTH:
880 ASSERT(ic->ic_opmode == IEEE80211_M_STA);
881 switch (ostate) {
882 case IEEE80211_S_INIT:
883 case IEEE80211_S_SCAN:
884 IEEE80211_UNLOCK(ic);
885 IEEE80211_SEND_MGMT(ic, in, IEEE80211_FC0_SUBTYPE_AUTH,
886 1);
887 return (0);
888 case IEEE80211_S_AUTH:
889 case IEEE80211_S_ASSOC:
890 switch (arg) {
891 case IEEE80211_FC0_SUBTYPE_AUTH:
892 IEEE80211_UNLOCK(ic);
893 IEEE80211_SEND_MGMT(ic, in,
894 IEEE80211_FC0_SUBTYPE_AUTH, 2);
895 return (0);
896 case IEEE80211_FC0_SUBTYPE_DEAUTH:
897 /* ignore and retry scan on timeout */
898 break;
899 }
900 break;
901 case IEEE80211_S_RUN:
902 switch (arg) {
903 case IEEE80211_FC0_SUBTYPE_AUTH:
904 ic->ic_state = ostate; /* stay RUN */
905 IEEE80211_UNLOCK(ic);
906 IEEE80211_SEND_MGMT(ic, in,
907 IEEE80211_FC0_SUBTYPE_AUTH, 2);
908 return (0);
909 case IEEE80211_FC0_SUBTYPE_DEAUTH:
910 IEEE80211_UNLOCK(ic);
911 ieee80211_sta_leave(ic, in);
912 /* try to re-auth */
913 IEEE80211_SEND_MGMT(ic, in,
914 IEEE80211_FC0_SUBTYPE_AUTH, 1);
915 return (0);
916 }
917 break;
918 }
919 break;
920 case IEEE80211_S_ASSOC:
921 ASSERT(ic->ic_opmode == IEEE80211_M_STA ||
922 ic->ic_opmode == IEEE80211_M_IBSS);
923 switch (ostate) {
924 case IEEE80211_S_INIT:
925 case IEEE80211_S_SCAN:
926 case IEEE80211_S_ASSOC:
927 ieee80211_dbg(IEEE80211_MSG_ANY, "ieee80211_newstate: "
928 "invalid transition\n");
929 break;
930 case IEEE80211_S_AUTH:
931 IEEE80211_UNLOCK(ic);
932 IEEE80211_SEND_MGMT(ic, in,
933 IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
934 return (0);
935 case IEEE80211_S_RUN:
936 IEEE80211_UNLOCK(ic);
937 ieee80211_sta_leave(ic, in);
938 IEEE80211_SEND_MGMT(ic, in,
939 IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 1);
940 return (0);
941 }
942 break;
943 case IEEE80211_S_RUN:
944 switch (ostate) {
945 case IEEE80211_S_INIT:
946 ieee80211_err("ieee80211_newstate: "
947 "invalid transition\n");
948 break;
949 case IEEE80211_S_AUTH:
950 ieee80211_err("ieee80211_newstate: "
951 "invalid transition\n");
952 break;
953 case IEEE80211_S_SCAN: /* adhoc/hostap mode */
954 case IEEE80211_S_ASSOC: /* infra mode */
955 ASSERT(in->in_txrate < in->in_rates.ir_nrates);
956 im->im_mgt_timer = 0;
957 ieee80211_notify_node_join(ic, in);
958
959 /*
960 * We can send data now; update the fastpath with our
961 * current associated BSSID and other relevant settings.
962 */
963 wd.wd_secalloc = ieee80211_crypto_getciphertype(ic);
964 wd.wd_opmode = ic->ic_opmode;
965 IEEE80211_ADDR_COPY(wd.wd_bssid, in->in_bssid);
966 wd.wd_qospad = 0;
967 if (in->in_flags &
968 (IEEE80211_NODE_QOS|IEEE80211_NODE_HT)) {
969 wd.wd_qospad = 2;
970 if (ic->ic_flags & IEEE80211_F_DATAPAD) {
971 wd.wd_qospad = roundup(wd.wd_qospad,
972 sizeof (uint32_t));
973 }
974 }
975 (void) mac_pdata_update(ic->ic_mach, &wd, sizeof (wd));
976 break;
977 }
978
979 /*
980 * When 802.1x is not in use mark the port authorized
981 * at this point so traffic can flow.
982 */
983 if (in->in_authmode != IEEE80211_AUTH_8021X)
984 ieee80211_node_authorize(in);
985 /*
986 * Enable inactivity processing.
987 */
988 ic->ic_scan.nt_inact_timer = IEEE80211_INACT_WAIT;
989 ic->ic_sta.nt_inact_timer = IEEE80211_INACT_WAIT;
990 break; /* IEEE80211_S_RUN */
991 } /* switch nstate */
992 IEEE80211_UNLOCK(ic);
993
994 return (0);
995 }
Unleashed OS