1 /* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */
2
3 /*
4 * Copyright (c) 2014 genua mbh <info@genua.de>
5 * Copyright (c) 2014 Fixup Software Ltd.
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 /*-
21 * Based on BSD-licensed source modules in the Linux iwlwifi driver,
22 * which were used as the reference documentation for this implementation.
23 *
24 * Driver version we are currently based off of is
25 * Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
26 *
27 ***********************************************************************
28 *
29 * This file is provided under a dual BSD/GPLv2 license. When using or
30 * redistributing this file, you may do so under either license.
31 *
32 * GPL LICENSE SUMMARY
33 *
34 * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
35 *
36 * This program is free software; you can redistribute it and/or modify
37 * it under the terms of version 2 of the GNU General Public License as
38 * published by the Free Software Foundation.
39 *
40 * This program is distributed in the hope that it will be useful, but
41 * WITHOUT ANY WARRANTY; without even the implied warranty of
42 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
43 * General Public License for more details.
44 *
45 * You should have received a copy of the GNU General Public License
46 * along with this program; if not, write to the Free Software
47 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
48 * USA
49 *
50 * The full GNU General Public License is included in this distribution
51 * in the file called COPYING.
52 *
53 * Contact Information:
54 * Intel Linux Wireless <ilw@linux.intel.com>
55 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
56 *
57 *
58 * BSD LICENSE
59 *
60 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
61 * All rights reserved.
62 *
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
65 * are met:
66 *
67 * * Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
69 * * Redistributions in binary form must reproduce the above copyright
70 * notice, this list of conditions and the following disclaimer in
71 * the documentation and/or other materials provided with the
72 * distribution.
73 * * Neither the name Intel Corporation nor the names of its
74 * contributors may be used to endorse or promote products derived
75 * from this software without specific prior written permission.
76 *
77 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
78 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
79 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
80 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
81 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
82 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
83 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
84 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
85 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
86 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
87 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
88 */
89
90 /*-
91 * Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr>
92 *
93 * Permission to use, copy, modify, and distribute this software for any
94 * purpose with or without fee is hereby granted, provided that the above
95 * copyright notice and this permission notice appear in all copies.
96 *
97 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
98 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
99 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
100 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
101 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
102 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
103 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
104 */
105 #include <sys/param.h>
106 #include <sys/bus.h>
107 #include <sys/conf.h>
108 #include <sys/endian.h>
109 #include <sys/firmware.h>
110 #include <sys/kernel.h>
111 #include <sys/malloc.h>
112 #include <sys/mbuf.h>
113 #include <sys/rman.h>
114 #include <sys/sysctl.h>
115 #include <sys/linker.h>
116
117 #include <machine/endian.h>
118
119 #include <bus/pci/pcivar.h>
120 #include <bus/pci/pcireg.h>
121
122 #include <net/bpf.h>
123
124 #include <net/if.h>
125 #include <net/if_var.h>
126 #include <net/if_arp.h>
127 #include <net/if_dl.h>
128 #include <net/if_media.h>
129 #include <net/if_types.h>
130
131 #include <netinet/in.h>
132 #include <netinet/in_systm.h>
133 #include <netinet/if_ether.h>
134 #include <netinet/ip.h>
135
136 #include <netproto/802_11/ieee80211_var.h>
137 #include <netproto/802_11/ieee80211_regdomain.h>
138 #include <netproto/802_11/ieee80211_ratectl.h>
139 #include <netproto/802_11/ieee80211_radiotap.h>
140
141 #include "if_iwmreg.h"
142 #include "if_iwmvar.h"
143 #include "if_iwm_debug.h"
144 #include "if_iwm_util.h"
145 #include "if_iwm_mac_ctxt.h"
146
147 /*
148 * BEGIN mvm/mac-ctxt.c
149 */
150
151 const uint8_t iwm_ac_to_tx_fifo[] = {
152 IWM_TX_FIFO_BE,
153 IWM_TX_FIFO_BK,
154 IWM_TX_FIFO_VI,
155 IWM_TX_FIFO_VO,
156 };
157
158 static void
iwm_ack_rates(struct iwm_softc * sc,int is2ghz,int * cck_rates,int * ofdm_rates,struct iwm_node * in)159 iwm_ack_rates(struct iwm_softc *sc, int is2ghz,
160 int *cck_rates, int *ofdm_rates, struct iwm_node *in)
161 {
162 int lowest_present_ofdm = 100;
163 int lowest_present_cck = 100;
164 uint8_t cck = 0;
165 uint8_t ofdm = 0;
166 int i;
167 struct ieee80211_rateset *rs = &in->in_ni.ni_rates;
168
169 if (is2ghz) {
170 for (i = IWM_FIRST_CCK_RATE; i <= IWM_LAST_CCK_RATE; i++) {
171 if ((iwm_ridx2rate(rs, i) & IEEE80211_RATE_BASIC) == 0)
172 continue;
173 cck |= (1 << i);
174 if (lowest_present_cck > i)
175 lowest_present_cck = i;
176 }
177 }
178 for (i = IWM_FIRST_OFDM_RATE; i <= IWM_LAST_NON_HT_RATE; i++) {
179 if ((iwm_ridx2rate(rs, i) & IEEE80211_RATE_BASIC) == 0)
180 continue;
181 ofdm |= (1 << (i - IWM_FIRST_OFDM_RATE));
182 if (lowest_present_ofdm > i)
183 lowest_present_ofdm = i;
184 }
185
186 /*
187 * Now we've got the basic rates as bitmaps in the ofdm and cck
188 * variables. This isn't sufficient though, as there might not
189 * be all the right rates in the bitmap. E.g. if the only basic
190 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
191 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
192 *
193 * [...] a STA responding to a received frame shall transmit
194 * its Control Response frame [...] at the highest rate in the
195 * BSSBasicRateSet parameter that is less than or equal to the
196 * rate of the immediately previous frame in the frame exchange
197 * sequence ([...]) and that is of the same modulation class
198 * ([...]) as the received frame. If no rate contained in the
199 * BSSBasicRateSet parameter meets these conditions, then the
200 * control frame sent in response to a received frame shall be
201 * transmitted at the highest mandatory rate of the PHY that is
202 * less than or equal to the rate of the received frame, and
203 * that is of the same modulation class as the received frame.
204 *
205 * As a consequence, we need to add all mandatory rates that are
206 * lower than all of the basic rates to these bitmaps.
207 */
208
209 if (IWM_RATE_24M_INDEX < lowest_present_ofdm)
210 ofdm |= IWM_RATE_BIT_MSK(24) >> IWM_FIRST_OFDM_RATE;
211 if (IWM_RATE_12M_INDEX < lowest_present_ofdm)
212 ofdm |= IWM_RATE_BIT_MSK(12) >> IWM_FIRST_OFDM_RATE;
213 /* 6M already there or needed so always add */
214 ofdm |= IWM_RATE_BIT_MSK(6) >> IWM_FIRST_OFDM_RATE;
215
216 /*
217 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
218 * Note, however:
219 * - if no CCK rates are basic, it must be ERP since there must
220 * be some basic rates at all, so they're OFDM => ERP PHY
221 * (or we're in 5 GHz, and the cck bitmap will never be used)
222 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
223 * - if 5.5M is basic, 1M and 2M are mandatory
224 * - if 2M is basic, 1M is mandatory
225 * - if 1M is basic, that's the only valid ACK rate.
226 * As a consequence, it's not as complicated as it sounds, just add
227 * any lower rates to the ACK rate bitmap.
228 */
229 if (IWM_RATE_11M_INDEX < lowest_present_cck)
230 cck |= IWM_RATE_BIT_MSK(11) >> IWM_FIRST_CCK_RATE;
231 if (IWM_RATE_5M_INDEX < lowest_present_cck)
232 cck |= IWM_RATE_BIT_MSK(5) >> IWM_FIRST_CCK_RATE;
233 if (IWM_RATE_2M_INDEX < lowest_present_cck)
234 cck |= IWM_RATE_BIT_MSK(2) >> IWM_FIRST_CCK_RATE;
235 /* 1M already there or needed so always add */
236 cck |= IWM_RATE_BIT_MSK(1) >> IWM_FIRST_CCK_RATE;
237
238 *cck_rates = cck;
239 *ofdm_rates = ofdm;
240 }
241
242 static void
iwm_mac_ctxt_cmd_common(struct iwm_softc * sc,struct iwm_node * in,struct iwm_mac_ctx_cmd * cmd,uint32_t action)243 iwm_mac_ctxt_cmd_common(struct iwm_softc *sc, struct iwm_node *in,
244 struct iwm_mac_ctx_cmd *cmd, uint32_t action)
245 {
246 struct ieee80211com *ic = &sc->sc_ic;
247 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
248 struct ieee80211_node *ni = vap->iv_bss;
249 struct iwm_vap *ivp = IWM_VAP(vap);
250 int cck_ack_rates, ofdm_ack_rates;
251 int i;
252 int is2ghz;
253
254 /*
255 * id is the MAC address ID - something to do with MAC filtering.
256 * color - not sure.
257 *
258 * These are both functions of the vap, not of the node.
259 * So, for now, hard-code both to 0 (default).
260 */
261 cmd->id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id,
262 ivp->color));
263 cmd->action = htole32(action);
264
265 cmd->mac_type = htole32(IWM_FW_MAC_TYPE_BSS_STA);
266
267 /*
268 * The TSF ID is one of four TSF tracking resources in the firmware.
269 * Read the iwlwifi/mvm code for more details.
270 *
271 * For now, just hard-code it to TSF tracking ID 0; we only support
272 * a single STA mode VAP.
273 *
274 * It's per-vap, not per-node.
275 */
276 cmd->tsf_id = htole32(IWM_DEFAULT_TSFID);
277
278 IEEE80211_ADDR_COPY(cmd->node_addr, vap->iv_myaddr);
279
280 /*
281 * XXX should we error out if in_assoc is 1 and ni == NULL?
282 */
283 #if 0
284 if (in->in_assoc) {
285 IEEE80211_ADDR_COPY(cmd->bssid_addr, ni->ni_bssid);
286 } else {
287 /* eth broadcast address */
288 IEEE80211_ADDR_COPY(cmd->bssid_addr, ieee80211broadcastaddr);
289 }
290 #else
291 /*
292 * XXX This workaround makes the firmware behave more correctly once
293 * we are associated, regularly giving us statistics notifications,
294 * as well as signaling missed beacons to us.
295 * Since we only call iwm_mac_ctxt_add() and
296 * iwm_mac_ctxt_changed() when already authenticating or
297 * associating, ni->ni_bssid should always make sense here.
298 */
299 if (ivp->iv_auth) {
300 IEEE80211_ADDR_COPY(cmd->bssid_addr, ni->ni_bssid);
301 } else {
302 /* XXX Or maybe all zeroes address? */
303 IEEE80211_ADDR_COPY(cmd->bssid_addr, ieee80211broadcastaddr);
304 }
305 #endif
306
307 /*
308 * Default to 2ghz if no node information is given.
309 */
310 if (in && in->in_ni.ni_chan != IEEE80211_CHAN_ANYC) {
311 is2ghz = !! IEEE80211_IS_CHAN_2GHZ(in->in_ni.ni_chan);
312 } else {
313 is2ghz = 1;
314 }
315 iwm_ack_rates(sc, is2ghz, &cck_ack_rates, &ofdm_ack_rates, in);
316 cmd->cck_rates = htole32(cck_ack_rates);
317 cmd->ofdm_rates = htole32(ofdm_ack_rates);
318
319 cmd->cck_short_preamble
320 = htole32((ic->ic_flags & IEEE80211_F_SHPREAMBLE)
321 ? IWM_MAC_FLG_SHORT_PREAMBLE : 0);
322 cmd->short_slot
323 = htole32((ic->ic_flags & IEEE80211_F_SHSLOT)
324 ? IWM_MAC_FLG_SHORT_SLOT : 0);
325
326 /*
327 * XXX TODO: if we're doing QOS..
328 * cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA)
329 */
330
331 for (i = 0; i < WME_NUM_AC; i++) {
332 uint8_t txf = iwm_ac_to_tx_fifo[i];
333
334 cmd->ac[txf].cw_min = htole16(ivp->queue_params[i].cw_min);
335 cmd->ac[txf].cw_max = htole16(ivp->queue_params[i].cw_max);
336 cmd->ac[txf].edca_txop =
337 htole16(ivp->queue_params[i].edca_txop);
338 cmd->ac[txf].aifsn = ivp->queue_params[i].aifsn;
339 cmd->ac[txf].fifos_mask = (1 << txf);
340 }
341
342 if (ivp->have_wme)
343 cmd->qos_flags |= htole32(IWM_MAC_QOS_FLG_UPDATE_EDCA);
344
345 if (ic->ic_flags & IEEE80211_F_USEPROT)
346 cmd->protection_flags |= htole32(IWM_MAC_PROT_FLG_TGG_PROTECT);
347
348 cmd->filter_flags = htole32(IWM_MAC_FILTER_ACCEPT_GRP);
349 }
350
351 static int
iwm_mac_ctxt_send_cmd(struct iwm_softc * sc,struct iwm_mac_ctx_cmd * cmd)352 iwm_mac_ctxt_send_cmd(struct iwm_softc *sc, struct iwm_mac_ctx_cmd *cmd)
353 {
354 int ret = iwm_send_cmd_pdu(sc, IWM_MAC_CONTEXT_CMD, IWM_CMD_SYNC,
355 sizeof(*cmd), cmd);
356 if (ret)
357 device_printf(sc->sc_dev,
358 "%s: Failed to send MAC context (action:%d): %d\n",
359 __func__, le32toh(cmd->action), ret);
360 return ret;
361 }
362
363 /*
364 * Fill the specific data for mac context of type station or p2p client
365 */
366 static void
iwm_mac_ctxt_cmd_fill_sta(struct iwm_softc * sc,struct iwm_node * in,struct iwm_mac_data_sta * ctxt_sta,int force_assoc_off)367 iwm_mac_ctxt_cmd_fill_sta(struct iwm_softc *sc, struct iwm_node *in,
368 struct iwm_mac_data_sta *ctxt_sta, int force_assoc_off)
369 {
370 struct ieee80211_node *ni = &in->in_ni;
371 unsigned dtim_period, dtim_count;
372 struct ieee80211com *ic = &sc->sc_ic;
373 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
374
375 /* will this work? */
376 dtim_period = vap->iv_dtim_period;
377 dtim_count = vap->iv_dtim_count;
378 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD,
379 "%s: force_assoc_off=%d\n", __func__, force_assoc_off);
380 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD,
381 "DTIM: period=%d count=%d\n", dtim_period, dtim_count);
382 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD,
383 "BEACON: tsf: %llu, ni_intval=%d\n",
384 (unsigned long long) le64toh(ni->ni_tstamp.tsf),
385 ni->ni_intval);
386
387 /* We need the dtim_period to set the MAC as associated */
388 if (in->in_assoc && dtim_period && !force_assoc_off) {
389 uint64_t tsf;
390 uint32_t dtim_offs;
391
392 /*
393 * The DTIM count counts down, so when it is N that means N
394 * more beacon intervals happen until the DTIM TBTT. Therefore
395 * add this to the current time. If that ends up being in the
396 * future, the firmware will handle it.
397 *
398 * Also note that the system_timestamp (which we get here as
399 * "sync_device_ts") and TSF timestamp aren't at exactly the
400 * same offset in the frame -- the TSF is at the first symbol
401 * of the TSF, the system timestamp is at signal acquisition
402 * time. This means there's an offset between them of at most
403 * a few hundred microseconds (24 * 8 bits + PLCP time gives
404 * 384us in the longest case), this is currently not relevant
405 * as the firmware wakes up around 2ms before the TBTT.
406 */
407 dtim_offs = dtim_count * ni->ni_intval;
408 /* convert TU to usecs */
409 dtim_offs *= 1024;
410
411 /*
412 * net80211: TSF is in 802.11 order, so convert up to local
413 * ordering before we manipulate things.
414 */
415 tsf = le64toh(ni->ni_tstamp.tsf);
416
417 ctxt_sta->dtim_tsf = htole64(tsf + dtim_offs);
418 ctxt_sta->dtim_time = htole32(tsf + dtim_offs);
419
420 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD,
421 "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
422 (long long)le64toh(ctxt_sta->dtim_tsf),
423 le32toh(ctxt_sta->dtim_time), dtim_offs);
424
425 ctxt_sta->is_assoc = htole32(1);
426 } else {
427 ctxt_sta->is_assoc = htole32(0);
428 }
429
430 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD | IWM_DEBUG_BEACON,
431 "%s: ni_intval: %d, bi_reciprocal: %d, dtim_interval: %d, dtim_reciprocal: %d\n",
432 __func__,
433 ni->ni_intval,
434 iwm_reciprocal(ni->ni_intval),
435 ni->ni_intval * dtim_period,
436 iwm_reciprocal(ni->ni_intval * dtim_period));
437
438 ctxt_sta->bi = htole32(ni->ni_intval);
439 ctxt_sta->bi_reciprocal = htole32(iwm_reciprocal(ni->ni_intval));
440 ctxt_sta->dtim_interval = htole32(ni->ni_intval * dtim_period);
441 ctxt_sta->dtim_reciprocal =
442 htole32(iwm_reciprocal(ni->ni_intval * dtim_period));
443
444 /* 10 = CONN_MAX_LISTEN_INTERVAL */
445 ctxt_sta->listen_interval = htole32(10);
446 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD | IWM_DEBUG_BEACON,
447 "%s: associd=%d\n", __func__, IEEE80211_AID(ni->ni_associd));
448 ctxt_sta->assoc_id = htole32(IEEE80211_AID(ni->ni_associd));
449 }
450
451 static int
iwm_mac_ctxt_cmd_station(struct iwm_softc * sc,struct ieee80211vap * vap,uint32_t action)452 iwm_mac_ctxt_cmd_station(struct iwm_softc *sc, struct ieee80211vap *vap,
453 uint32_t action)
454 {
455 struct ieee80211_node *ni = vap->iv_bss;
456 struct iwm_node *in = IWM_NODE(ni);
457 struct iwm_mac_ctx_cmd cmd = {};
458
459 IWM_DPRINTF(sc, IWM_DEBUG_RESET,
460 "%s: called; action=%d\n", __func__, action);
461
462 /* Fill the common data for all mac context types */
463 iwm_mac_ctxt_cmd_common(sc, in, &cmd, action);
464
465 /* Allow beacons to pass through as long as we are not associated,or we
466 * do not have dtim period information */
467 if (!in->in_assoc || !vap->iv_dtim_period)
468 cmd.filter_flags |= htole32(IWM_MAC_FILTER_IN_BEACON);
469 else
470 cmd.filter_flags &= ~htole32(IWM_MAC_FILTER_IN_BEACON);
471
472 /* Fill the data specific for station mode */
473 iwm_mac_ctxt_cmd_fill_sta(sc, in,
474 &cmd.sta, action == IWM_FW_CTXT_ACTION_ADD);
475
476 return iwm_mac_ctxt_send_cmd(sc, &cmd);
477 }
478
479 static int
iwm_mac_ctx_send(struct iwm_softc * sc,struct ieee80211vap * vap,uint32_t action)480 iwm_mac_ctx_send(struct iwm_softc *sc, struct ieee80211vap *vap,
481 uint32_t action)
482 {
483 return iwm_mac_ctxt_cmd_station(sc, vap, action);
484 }
485
486 int
iwm_mac_ctxt_add(struct iwm_softc * sc,struct ieee80211vap * vap)487 iwm_mac_ctxt_add(struct iwm_softc *sc, struct ieee80211vap *vap)
488 {
489 struct iwm_vap *iv = IWM_VAP(vap);
490 int ret;
491
492 if (iv->is_uploaded != 0) {
493 device_printf(sc->sc_dev, "%s: called; uploaded != 0\n",
494 __func__);
495 return (EIO);
496 }
497
498 ret = iwm_mac_ctx_send(sc, vap, IWM_FW_CTXT_ACTION_ADD);
499 if (ret)
500 return (ret);
501 iv->is_uploaded = 1;
502 return (0);
503 }
504
505 int
iwm_mac_ctxt_changed(struct iwm_softc * sc,struct ieee80211vap * vap)506 iwm_mac_ctxt_changed(struct iwm_softc *sc, struct ieee80211vap *vap)
507 {
508 struct iwm_vap *iv = IWM_VAP(vap);
509
510 if (iv->is_uploaded == 0) {
511 device_printf(sc->sc_dev, "%s: called; uploaded = 0\n",
512 __func__);
513 return (EIO);
514 }
515 return iwm_mac_ctx_send(sc, vap, IWM_FW_CTXT_ACTION_MODIFY);
516 }
517
518 #if 0
519 static int
520 iwm_mac_ctxt_remove(struct iwm_softc *sc, struct iwm_node *in)
521 {
522 struct iwm_mac_ctx_cmd cmd;
523 int ret;
524
525 if (!in->in_uploaded) {
526 device_printf(sc->sc_dev,
527 "attempt to remove !uploaded node %p", in);
528 return EIO;
529 }
530
531 memset(&cmd, 0, sizeof(cmd));
532
533 cmd.id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(IWM_DEFAULT_MACID,
534 IWM_DEFAULT_COLOR));
535 cmd.action = htole32(IWM_FW_CTXT_ACTION_REMOVE);
536
537 ret = iwm_send_cmd_pdu(sc,
538 IWM_MAC_CONTEXT_CMD, IWM_CMD_SYNC, sizeof(cmd), &cmd);
539 if (ret) {
540 device_printf(sc->sc_dev,
541 "Failed to remove MAC context: %d\n", ret);
542 return ret;
543 }
544 in->in_uploaded = 0;
545
546 return 0;
547 }
548 #endif
549