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/cdefs.h> 106 __FBSDID("$FreeBSD$"); 107 108 #include "opt_wlan.h" 109 110 #include <sys/param.h> 111 #include <sys/bus.h> 112 #include <sys/conf.h> 113 #include <sys/endian.h> 114 #include <sys/firmware.h> 115 #include <sys/kernel.h> 116 #include <sys/malloc.h> 117 #include <sys/mbuf.h> 118 #include <sys/mutex.h> 119 #include <sys/module.h> 120 #include <sys/proc.h> 121 #include <sys/rman.h> 122 #include <sys/socket.h> 123 #include <sys/sockio.h> 124 #include <sys/sysctl.h> 125 #include <sys/linker.h> 126 127 #include <machine/bus.h> 128 #include <machine/endian.h> 129 #include <machine/resource.h> 130 131 #include <dev/pci/pcivar.h> 132 #include <dev/pci/pcireg.h> 133 134 #include <net/bpf.h> 135 136 #include <net/if.h> 137 #include <net/if_var.h> 138 #include <net/if_arp.h> 139 #include <net/if_dl.h> 140 #include <net/if_media.h> 141 #include <net/if_types.h> 142 143 #include <netinet/in.h> 144 #include <netinet/in_systm.h> 145 #include <netinet/if_ether.h> 146 #include <netinet/ip.h> 147 148 #include <net80211/ieee80211_var.h> 149 #include <net80211/ieee80211_regdomain.h> 150 #include <net80211/ieee80211_ratectl.h> 151 #include <net80211/ieee80211_radiotap.h> 152 153 #include <dev/iwm/if_iwmreg.h> 154 #include <dev/iwm/if_iwmvar.h> 155 #include <dev/iwm/if_iwm_debug.h> 156 #include <dev/iwm/if_iwm_util.h> 157 #include <dev/iwm/if_iwm_mac_ctxt.h> 158 159 /* 160 * BEGIN mvm/mac-ctxt.c 161 */ 162 163 static void 164 iwm_mvm_ack_rates(struct iwm_softc *sc, int is2ghz, 165 int *cck_rates, int *ofdm_rates, struct iwm_node *in) 166 { 167 int lowest_present_ofdm = 100; 168 int lowest_present_cck = 100; 169 uint8_t cck = 0; 170 uint8_t ofdm = 0; 171 int i; 172 struct ieee80211_rateset *rs = &in->in_ni.ni_rates; 173 174 if (is2ghz) { 175 for (i = IWM_FIRST_CCK_RATE; i <= IWM_LAST_CCK_RATE; i++) { 176 if ((iwm_ridx2rate(rs, i) & IEEE80211_RATE_BASIC) == 0) 177 continue; 178 cck |= (1 << i); 179 if (lowest_present_cck > i) 180 lowest_present_cck = i; 181 } 182 } 183 for (i = IWM_FIRST_OFDM_RATE; i <= IWM_LAST_NON_HT_RATE; i++) { 184 if ((iwm_ridx2rate(rs, i) & IEEE80211_RATE_BASIC) == 0) 185 continue; 186 ofdm |= (1 << (i - IWM_FIRST_OFDM_RATE)); 187 if (lowest_present_ofdm > i) 188 lowest_present_ofdm = i; 189 } 190 191 /* 192 * Now we've got the basic rates as bitmaps in the ofdm and cck 193 * variables. This isn't sufficient though, as there might not 194 * be all the right rates in the bitmap. E.g. if the only basic 195 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 196 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 197 * 198 * [...] a STA responding to a received frame shall transmit 199 * its Control Response frame [...] at the highest rate in the 200 * BSSBasicRateSet parameter that is less than or equal to the 201 * rate of the immediately previous frame in the frame exchange 202 * sequence ([...]) and that is of the same modulation class 203 * ([...]) as the received frame. If no rate contained in the 204 * BSSBasicRateSet parameter meets these conditions, then the 205 * control frame sent in response to a received frame shall be 206 * transmitted at the highest mandatory rate of the PHY that is 207 * less than or equal to the rate of the received frame, and 208 * that is of the same modulation class as the received frame. 209 * 210 * As a consequence, we need to add all mandatory rates that are 211 * lower than all of the basic rates to these bitmaps. 212 */ 213 214 if (IWM_RATE_24M_INDEX < lowest_present_ofdm) 215 ofdm |= IWM_RATE_BIT_MSK(24) >> IWM_FIRST_OFDM_RATE; 216 if (IWM_RATE_12M_INDEX < lowest_present_ofdm) 217 ofdm |= IWM_RATE_BIT_MSK(12) >> IWM_FIRST_OFDM_RATE; 218 /* 6M already there or needed so always add */ 219 ofdm |= IWM_RATE_BIT_MSK(6) >> IWM_FIRST_OFDM_RATE; 220 221 /* 222 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 223 * Note, however: 224 * - if no CCK rates are basic, it must be ERP since there must 225 * be some basic rates at all, so they're OFDM => ERP PHY 226 * (or we're in 5 GHz, and the cck bitmap will never be used) 227 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 228 * - if 5.5M is basic, 1M and 2M are mandatory 229 * - if 2M is basic, 1M is mandatory 230 * - if 1M is basic, that's the only valid ACK rate. 231 * As a consequence, it's not as complicated as it sounds, just add 232 * any lower rates to the ACK rate bitmap. 233 */ 234 if (IWM_RATE_11M_INDEX < lowest_present_cck) 235 cck |= IWM_RATE_BIT_MSK(11) >> IWM_FIRST_CCK_RATE; 236 if (IWM_RATE_5M_INDEX < lowest_present_cck) 237 cck |= IWM_RATE_BIT_MSK(5) >> IWM_FIRST_CCK_RATE; 238 if (IWM_RATE_2M_INDEX < lowest_present_cck) 239 cck |= IWM_RATE_BIT_MSK(2) >> IWM_FIRST_CCK_RATE; 240 /* 1M already there or needed so always add */ 241 cck |= IWM_RATE_BIT_MSK(1) >> IWM_FIRST_CCK_RATE; 242 243 *cck_rates = cck; 244 *ofdm_rates = ofdm; 245 } 246 247 static void 248 iwm_mvm_mac_ctxt_cmd_common(struct iwm_softc *sc, struct iwm_node *in, 249 struct iwm_mac_ctx_cmd *cmd, uint32_t action) 250 { 251 struct ieee80211com *ic = &sc->sc_ic; 252 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 253 struct ieee80211_node *ni = vap->iv_bss; 254 int cck_ack_rates, ofdm_ack_rates; 255 int i; 256 int is2ghz; 257 258 /* 259 * id is the MAC address ID - something to do with MAC filtering. 260 * color - not sure. 261 * 262 * These are both functions of the vap, not of the node. 263 * So, for now, hard-code both to 0 (default). 264 */ 265 cmd->id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(IWM_DEFAULT_MACID, 266 IWM_DEFAULT_COLOR)); 267 cmd->action = htole32(action); 268 269 cmd->mac_type = htole32(IWM_FW_MAC_TYPE_BSS_STA); 270 271 /* 272 * The TSF ID is one of four TSF tracking resources in the firmware. 273 * Read the iwlwifi/mvm code for more details. 274 * 275 * For now, just hard-code it to TSF tracking ID 0; we only support 276 * a single STA mode VAP. 277 * 278 * It's per-vap, not per-node. 279 */ 280 cmd->tsf_id = htole32(IWM_DEFAULT_TSFID); 281 282 IEEE80211_ADDR_COPY(cmd->node_addr, vap->iv_myaddr); 283 284 /* 285 * XXX should we error out if in_assoc is 1 and ni == NULL? 286 */ 287 #if 0 288 if (in->in_assoc) { 289 IEEE80211_ADDR_COPY(cmd->bssid_addr, ni->ni_bssid); 290 } else { 291 /* eth broadcast address */ 292 IEEE80211_ADDR_COPY(cmd->bssid_addr, ieee80211broadcastaddr); 293 } 294 #else 295 /* 296 * XXX This workaround makes the firmware behave more correctly once 297 * we are associated, regularly giving us statistics notifications, 298 * as well as signaling missed beacons to us. 299 * Since we only call iwm_mvm_mac_ctxt_add() and 300 * iwm_mvm_mac_ctxt_changed() when already authenticating or 301 * associating, ni->ni_bssid should always make sense here. 302 */ 303 IEEE80211_ADDR_COPY(cmd->bssid_addr, ni->ni_bssid); 304 #endif 305 306 /* 307 * Default to 2ghz if no node information is given. 308 */ 309 if (in) { 310 is2ghz = !! IEEE80211_IS_CHAN_2GHZ(in->in_ni.ni_chan); 311 } else { 312 is2ghz = 1; 313 } 314 iwm_mvm_ack_rates(sc, is2ghz, &cck_ack_rates, &ofdm_ack_rates, in); 315 cmd->cck_rates = htole32(cck_ack_rates); 316 cmd->ofdm_rates = htole32(ofdm_ack_rates); 317 318 cmd->cck_short_preamble 319 = htole32((ic->ic_flags & IEEE80211_F_SHPREAMBLE) 320 ? IWM_MAC_FLG_SHORT_PREAMBLE : 0); 321 cmd->short_slot 322 = htole32((ic->ic_flags & IEEE80211_F_SHSLOT) 323 ? IWM_MAC_FLG_SHORT_SLOT : 0); 324 325 /* 326 * XXX TODO: if we're doing QOS.. 327 * cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA) 328 */ 329 330 /* XXX TODO: set wme parameters; also handle getting updated wme parameters */ 331 for (i = 0; i < IWM_AC_NUM+1; i++) { 332 int txf = i; 333 334 cmd->ac[txf].cw_min = htole16(0x0f); 335 cmd->ac[txf].cw_max = htole16(0x3f); 336 cmd->ac[txf].aifsn = 1; 337 cmd->ac[txf].fifos_mask = (1 << txf); 338 cmd->ac[txf].edca_txop = 0; 339 } 340 341 if (ic->ic_flags & IEEE80211_F_USEPROT) 342 cmd->protection_flags |= htole32(IWM_MAC_PROT_FLG_TGG_PROTECT); 343 344 cmd->filter_flags = htole32(IWM_MAC_FILTER_ACCEPT_GRP); 345 } 346 347 static int 348 iwm_mvm_mac_ctxt_send_cmd(struct iwm_softc *sc, struct iwm_mac_ctx_cmd *cmd) 349 { 350 int ret = iwm_mvm_send_cmd_pdu(sc, IWM_MAC_CONTEXT_CMD, IWM_CMD_SYNC, 351 sizeof(*cmd), cmd); 352 if (ret) 353 device_printf(sc->sc_dev, 354 "%s: Failed to send MAC context (action:%d): %d\n", 355 __func__, le32toh(cmd->action), ret); 356 return ret; 357 } 358 359 /* 360 * Fill the specific data for mac context of type station or p2p client 361 */ 362 static void 363 iwm_mvm_mac_ctxt_cmd_fill_sta(struct iwm_softc *sc, struct iwm_node *in, 364 struct iwm_mac_data_sta *ctxt_sta, int force_assoc_off) 365 { 366 struct ieee80211_node *ni = &in->in_ni; 367 unsigned dtim_period, dtim_count; 368 struct ieee80211com *ic = &sc->sc_ic; 369 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 370 371 /* will this work? */ 372 dtim_period = vap->iv_dtim_period; 373 dtim_count = vap->iv_dtim_count; 374 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD, 375 "%s: force_assoc_off=%d\n", __func__, force_assoc_off); 376 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD, 377 "DTIM: period=%d count=%d\n", dtim_period, dtim_count); 378 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD, 379 "BEACON: tsf: %llu, ni_intval=%d\n", 380 (unsigned long long) le64toh(ni->ni_tstamp.tsf), 381 ni->ni_intval); 382 383 /* We need the dtim_period to set the MAC as associated */ 384 if (in->in_assoc && dtim_period && !force_assoc_off) { 385 uint64_t tsf; 386 uint32_t dtim_offs; 387 388 /* 389 * The DTIM count counts down, so when it is N that means N 390 * more beacon intervals happen until the DTIM TBTT. Therefore 391 * add this to the current time. If that ends up being in the 392 * future, the firmware will handle it. 393 * 394 * Also note that the system_timestamp (which we get here as 395 * "sync_device_ts") and TSF timestamp aren't at exactly the 396 * same offset in the frame -- the TSF is at the first symbol 397 * of the TSF, the system timestamp is at signal acquisition 398 * time. This means there's an offset between them of at most 399 * a few hundred microseconds (24 * 8 bits + PLCP time gives 400 * 384us in the longest case), this is currently not relevant 401 * as the firmware wakes up around 2ms before the TBTT. 402 */ 403 dtim_offs = dtim_count * ni->ni_intval; 404 /* convert TU to usecs */ 405 dtim_offs *= 1024; 406 407 /* 408 * net80211: TSF is in 802.11 order, so convert up to local 409 * ordering before we manipulate things. 410 */ 411 tsf = le64toh(ni->ni_tstamp.tsf); 412 413 ctxt_sta->dtim_tsf = htole64(tsf + dtim_offs); 414 ctxt_sta->dtim_time = htole32(tsf + dtim_offs); 415 416 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD, 417 "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 418 (long long)le64toh(ctxt_sta->dtim_tsf), 419 le32toh(ctxt_sta->dtim_time), dtim_offs); 420 421 ctxt_sta->is_assoc = htole32(1); 422 } else { 423 ctxt_sta->is_assoc = htole32(0); 424 } 425 426 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD | IWM_DEBUG_BEACON, 427 "%s: ni_intval: %d, bi_reciprocal: %d, dtim_interval: %d, dtim_reciprocal: %d\n", 428 __func__, 429 ni->ni_intval, 430 iwm_mvm_reciprocal(ni->ni_intval), 431 ni->ni_intval * dtim_period, 432 iwm_mvm_reciprocal(ni->ni_intval * dtim_period)); 433 434 ctxt_sta->bi = htole32(ni->ni_intval); 435 ctxt_sta->bi_reciprocal = htole32(iwm_mvm_reciprocal(ni->ni_intval)); 436 ctxt_sta->dtim_interval = htole32(ni->ni_intval * dtim_period); 437 ctxt_sta->dtim_reciprocal = 438 htole32(iwm_mvm_reciprocal(ni->ni_intval * dtim_period)); 439 440 /* 10 = CONN_MAX_LISTEN_INTERVAL */ 441 ctxt_sta->listen_interval = htole32(10); 442 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD | IWM_DEBUG_BEACON, 443 "%s: associd=%d\n", __func__, IEEE80211_AID(ni->ni_associd)); 444 ctxt_sta->assoc_id = htole32(IEEE80211_AID(ni->ni_associd)); 445 } 446 447 static int 448 iwm_mvm_mac_ctxt_cmd_station(struct iwm_softc *sc, struct ieee80211vap *vap, 449 uint32_t action) 450 { 451 struct ieee80211_node *ni = vap->iv_bss; 452 struct iwm_node *in = IWM_NODE(ni); 453 struct iwm_mac_ctx_cmd cmd = {}; 454 455 IWM_DPRINTF(sc, IWM_DEBUG_RESET, 456 "%s: called; action=%d\n", __func__, action); 457 458 /* Fill the common data for all mac context types */ 459 iwm_mvm_mac_ctxt_cmd_common(sc, in, &cmd, action); 460 461 /* Allow beacons to pass through as long as we are not associated,or we 462 * do not have dtim period information */ 463 if (!in->in_assoc || !vap->iv_dtim_period) 464 cmd.filter_flags |= htole32(IWM_MAC_FILTER_IN_BEACON); 465 else 466 cmd.filter_flags &= ~htole32(IWM_MAC_FILTER_IN_BEACON); 467 468 /* Fill the data specific for station mode */ 469 iwm_mvm_mac_ctxt_cmd_fill_sta(sc, in, 470 &cmd.sta, action == IWM_FW_CTXT_ACTION_ADD); 471 472 return iwm_mvm_mac_ctxt_send_cmd(sc, &cmd); 473 } 474 475 static int 476 iwm_mvm_mac_ctx_send(struct iwm_softc *sc, struct ieee80211vap *vap, 477 uint32_t action) 478 { 479 return iwm_mvm_mac_ctxt_cmd_station(sc, vap, action); 480 } 481 482 int 483 iwm_mvm_mac_ctxt_add(struct iwm_softc *sc, struct ieee80211vap *vap) 484 { 485 struct iwm_vap *iv = IWM_VAP(vap); 486 int ret; 487 488 if (iv->is_uploaded != 0) { 489 device_printf(sc->sc_dev, "%s: called; uploaded != 0\n", 490 __func__); 491 return (EIO); 492 } 493 494 ret = iwm_mvm_mac_ctx_send(sc, vap, IWM_FW_CTXT_ACTION_ADD); 495 if (ret) 496 return (ret); 497 iv->is_uploaded = 1; 498 return (0); 499 } 500 501 int 502 iwm_mvm_mac_ctxt_changed(struct iwm_softc *sc, struct ieee80211vap *vap) 503 { 504 struct iwm_vap *iv = IWM_VAP(vap); 505 506 if (iv->is_uploaded == 0) { 507 device_printf(sc->sc_dev, "%s: called; uploaded = 0\n", 508 __func__); 509 return (EIO); 510 } 511 return iwm_mvm_mac_ctx_send(sc, vap, IWM_FW_CTXT_ACTION_MODIFY); 512 } 513 514 #if 0 515 static int 516 iwm_mvm_mac_ctxt_remove(struct iwm_softc *sc, struct iwm_node *in) 517 { 518 struct iwm_mac_ctx_cmd cmd; 519 int ret; 520 521 if (!in->in_uploaded) { 522 device_printf(sc->sc_dev, 523 "attempt to remove !uploaded node %p", in); 524 return EIO; 525 } 526 527 memset(&cmd, 0, sizeof(cmd)); 528 529 cmd.id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(IWM_DEFAULT_MACID, 530 IWM_DEFAULT_COLOR)); 531 cmd.action = htole32(IWM_FW_CTXT_ACTION_REMOVE); 532 533 ret = iwm_mvm_send_cmd_pdu(sc, 534 IWM_MAC_CONTEXT_CMD, IWM_CMD_SYNC, sizeof(cmd), &cmd); 535 if (ret) { 536 device_printf(sc->sc_dev, 537 "Failed to remove MAC context: %d\n", ret); 538 return ret; 539 } 540 in->in_uploaded = 0; 541 542 return 0; 543 } 544 #endif 545