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 #include "opt_iwm.h" 110 111 #include <sys/param.h> 112 #include <sys/bus.h> 113 #include <sys/conf.h> 114 #include <sys/endian.h> 115 #include <sys/firmware.h> 116 #include <sys/kernel.h> 117 #include <sys/malloc.h> 118 #include <sys/mbuf.h> 119 #include <sys/mutex.h> 120 #include <sys/module.h> 121 #include <sys/proc.h> 122 #include <sys/rman.h> 123 #include <sys/socket.h> 124 #include <sys/sockio.h> 125 #include <sys/sysctl.h> 126 #include <sys/linker.h> 127 128 #include <machine/bus.h> 129 #include <machine/endian.h> 130 #include <machine/resource.h> 131 132 #include <dev/pci/pcivar.h> 133 #include <dev/pci/pcireg.h> 134 135 #include <net/bpf.h> 136 137 #include <net/if.h> 138 #include <net/if_var.h> 139 #include <net/if_arp.h> 140 #include <net/if_dl.h> 141 #include <net/if_media.h> 142 #include <net/if_types.h> 143 144 #include <netinet/in.h> 145 #include <netinet/in_systm.h> 146 #include <netinet/if_ether.h> 147 #include <netinet/ip.h> 148 149 #include <net80211/ieee80211_var.h> 150 #include <net80211/ieee80211_regdomain.h> 151 #include <net80211/ieee80211_ratectl.h> 152 #include <net80211/ieee80211_radiotap.h> 153 154 #include <dev/iwm/if_iwmreg.h> 155 #include <dev/iwm/if_iwmvar.h> 156 #include <dev/iwm/if_iwm_debug.h> 157 #include <dev/iwm/if_iwm_util.h> 158 #include <dev/iwm/if_iwm_mac_ctxt.h> 159 160 /* 161 * BEGIN mvm/mac-ctxt.c 162 */ 163 164 static void 165 iwm_mvm_ack_rates(struct iwm_softc *sc, int is2ghz, 166 int *cck_rates, int *ofdm_rates, struct iwm_node *in) 167 { 168 int lowest_present_ofdm = 100; 169 int lowest_present_cck = 100; 170 uint8_t cck = 0; 171 uint8_t ofdm = 0; 172 int i; 173 struct ieee80211_rateset *rs = &in->in_ni.ni_rates; 174 175 if (is2ghz) { 176 for (i = IWM_FIRST_CCK_RATE; i <= IWM_LAST_CCK_RATE; i++) { 177 if ((iwm_ridx2rate(rs, i) & IEEE80211_RATE_BASIC) == 0) 178 continue; 179 cck |= (1 << i); 180 if (lowest_present_cck > i) 181 lowest_present_cck = i; 182 } 183 } 184 for (i = IWM_FIRST_OFDM_RATE; i <= IWM_LAST_NON_HT_RATE; i++) { 185 if ((iwm_ridx2rate(rs, i) & IEEE80211_RATE_BASIC) == 0) 186 continue; 187 ofdm |= (1 << (i - IWM_FIRST_OFDM_RATE)); 188 if (lowest_present_ofdm > i) 189 lowest_present_ofdm = i; 190 } 191 192 /* 193 * Now we've got the basic rates as bitmaps in the ofdm and cck 194 * variables. This isn't sufficient though, as there might not 195 * be all the right rates in the bitmap. E.g. if the only basic 196 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 197 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 198 * 199 * [...] a STA responding to a received frame shall transmit 200 * its Control Response frame [...] at the highest rate in the 201 * BSSBasicRateSet parameter that is less than or equal to the 202 * rate of the immediately previous frame in the frame exchange 203 * sequence ([...]) and that is of the same modulation class 204 * ([...]) as the received frame. If no rate contained in the 205 * BSSBasicRateSet parameter meets these conditions, then the 206 * control frame sent in response to a received frame shall be 207 * transmitted at the highest mandatory rate of the PHY that is 208 * less than or equal to the rate of the received frame, and 209 * that is of the same modulation class as the received frame. 210 * 211 * As a consequence, we need to add all mandatory rates that are 212 * lower than all of the basic rates to these bitmaps. 213 */ 214 215 if (IWM_RATE_24M_INDEX < lowest_present_ofdm) 216 ofdm |= IWM_RATE_BIT_MSK(24) >> IWM_FIRST_OFDM_RATE; 217 if (IWM_RATE_12M_INDEX < lowest_present_ofdm) 218 ofdm |= IWM_RATE_BIT_MSK(12) >> IWM_FIRST_OFDM_RATE; 219 /* 6M already there or needed so always add */ 220 ofdm |= IWM_RATE_BIT_MSK(6) >> IWM_FIRST_OFDM_RATE; 221 222 /* 223 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 224 * Note, however: 225 * - if no CCK rates are basic, it must be ERP since there must 226 * be some basic rates at all, so they're OFDM => ERP PHY 227 * (or we're in 5 GHz, and the cck bitmap will never be used) 228 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 229 * - if 5.5M is basic, 1M and 2M are mandatory 230 * - if 2M is basic, 1M is mandatory 231 * - if 1M is basic, that's the only valid ACK rate. 232 * As a consequence, it's not as complicated as it sounds, just add 233 * any lower rates to the ACK rate bitmap. 234 */ 235 if (IWM_RATE_11M_INDEX < lowest_present_cck) 236 cck |= IWM_RATE_BIT_MSK(11) >> IWM_FIRST_CCK_RATE; 237 if (IWM_RATE_5M_INDEX < lowest_present_cck) 238 cck |= IWM_RATE_BIT_MSK(5) >> IWM_FIRST_CCK_RATE; 239 if (IWM_RATE_2M_INDEX < lowest_present_cck) 240 cck |= IWM_RATE_BIT_MSK(2) >> IWM_FIRST_CCK_RATE; 241 /* 1M already there or needed so always add */ 242 cck |= IWM_RATE_BIT_MSK(1) >> IWM_FIRST_CCK_RATE; 243 244 *cck_rates = cck; 245 *ofdm_rates = ofdm; 246 } 247 248 static void 249 iwm_mvm_mac_ctxt_cmd_common(struct iwm_softc *sc, struct iwm_node *in, 250 struct iwm_mac_ctx_cmd *cmd, uint32_t action) 251 { 252 struct ieee80211com *ic = &sc->sc_ic; 253 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 254 struct ieee80211_node *ni = vap->iv_bss; 255 int cck_ack_rates, ofdm_ack_rates; 256 int i; 257 int is2ghz; 258 259 /* 260 * id is the MAC address ID - something to do with MAC filtering. 261 * color - not sure. 262 * 263 * These are both functions of the vap, not of the node. 264 * So, for now, hard-code both to 0 (default). 265 */ 266 cmd->id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(IWM_DEFAULT_MACID, 267 IWM_DEFAULT_COLOR)); 268 cmd->action = htole32(action); 269 270 cmd->mac_type = htole32(IWM_FW_MAC_TYPE_BSS_STA); 271 272 /* 273 * The TSF ID is one of four TSF tracking resources in the firmware. 274 * Read the iwlwifi/mvm code for more details. 275 * 276 * For now, just hard-code it to TSF tracking ID 0; we only support 277 * a single STA mode VAP. 278 * 279 * It's per-vap, not per-node. 280 */ 281 cmd->tsf_id = htole32(IWM_DEFAULT_TSFID); 282 283 IEEE80211_ADDR_COPY(cmd->node_addr, vap->iv_myaddr); 284 285 /* 286 * XXX should we error out if in_assoc is 1 and ni == NULL? 287 */ 288 #if 0 289 if (in->in_assoc) { 290 IEEE80211_ADDR_COPY(cmd->bssid_addr, ni->ni_bssid); 291 } else { 292 /* eth broadcast address */ 293 IEEE80211_ADDR_COPY(cmd->bssid_addr, ieee80211broadcastaddr); 294 } 295 #else 296 /* 297 * XXX This workaround makes the firmware behave more correctly once 298 * we are associated, regularly giving us statistics notifications, 299 * as well as signaling missed beacons to us. 300 * Since we only call iwm_mvm_mac_ctxt_add() and 301 * iwm_mvm_mac_ctxt_changed() when already authenticating or 302 * associating, ni->ni_bssid should always make sense here. 303 */ 304 IEEE80211_ADDR_COPY(cmd->bssid_addr, ni->ni_bssid); 305 #endif 306 307 /* 308 * Default to 2ghz if no node information is given. 309 */ 310 if (in) { 311 is2ghz = !! IEEE80211_IS_CHAN_2GHZ(in->in_ni.ni_chan); 312 } else { 313 is2ghz = 1; 314 } 315 iwm_mvm_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 /* XXX TODO: set wme parameters; also handle getting updated wme parameters */ 332 for (i = 0; i < IWM_AC_NUM+1; i++) { 333 int txf = i; 334 335 cmd->ac[txf].cw_min = htole16(0x0f); 336 cmd->ac[txf].cw_max = htole16(0x3f); 337 cmd->ac[txf].aifsn = 1; 338 cmd->ac[txf].fifos_mask = (1 << txf); 339 cmd->ac[txf].edca_txop = 0; 340 } 341 342 if (ic->ic_flags & IEEE80211_F_USEPROT) 343 cmd->protection_flags |= htole32(IWM_MAC_PROT_FLG_TGG_PROTECT); 344 345 cmd->filter_flags = htole32(IWM_MAC_FILTER_ACCEPT_GRP); 346 } 347 348 static int 349 iwm_mvm_mac_ctxt_send_cmd(struct iwm_softc *sc, struct iwm_mac_ctx_cmd *cmd) 350 { 351 int ret = iwm_mvm_send_cmd_pdu(sc, IWM_MAC_CONTEXT_CMD, IWM_CMD_SYNC, 352 sizeof(*cmd), cmd); 353 if (ret) 354 device_printf(sc->sc_dev, 355 "%s: Failed to send MAC context (action:%d): %d\n", 356 __func__, le32toh(cmd->action), ret); 357 return ret; 358 } 359 360 /* 361 * Fill the specific data for mac context of type station or p2p client 362 */ 363 static void 364 iwm_mvm_mac_ctxt_cmd_fill_sta(struct iwm_softc *sc, struct iwm_node *in, 365 struct iwm_mac_data_sta *ctxt_sta, int force_assoc_off) 366 { 367 struct ieee80211_node *ni = &in->in_ni; 368 unsigned dtim_period, dtim_count; 369 struct ieee80211com *ic = &sc->sc_ic; 370 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 371 372 /* will this work? */ 373 dtim_period = vap->iv_dtim_period; 374 dtim_count = vap->iv_dtim_count; 375 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD, 376 "%s: force_assoc_off=%d\n", __func__, force_assoc_off); 377 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD, 378 "DTIM: period=%d count=%d\n", dtim_period, dtim_count); 379 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD, 380 "BEACON: tsf: %llu, ni_intval=%d\n", 381 (unsigned long long) le64toh(ni->ni_tstamp.tsf), 382 ni->ni_intval); 383 384 /* We need the dtim_period to set the MAC as associated */ 385 if (in->in_assoc && dtim_period && !force_assoc_off) { 386 uint64_t tsf; 387 uint32_t dtim_offs; 388 389 /* 390 * The DTIM count counts down, so when it is N that means N 391 * more beacon intervals happen until the DTIM TBTT. Therefore 392 * add this to the current time. If that ends up being in the 393 * future, the firmware will handle it. 394 * 395 * Also note that the system_timestamp (which we get here as 396 * "sync_device_ts") and TSF timestamp aren't at exactly the 397 * same offset in the frame -- the TSF is at the first symbol 398 * of the TSF, the system timestamp is at signal acquisition 399 * time. This means there's an offset between them of at most 400 * a few hundred microseconds (24 * 8 bits + PLCP time gives 401 * 384us in the longest case), this is currently not relevant 402 * as the firmware wakes up around 2ms before the TBTT. 403 */ 404 dtim_offs = dtim_count * ni->ni_intval; 405 /* convert TU to usecs */ 406 dtim_offs *= 1024; 407 408 /* 409 * net80211: TSF is in 802.11 order, so convert up to local 410 * ordering before we manipulate things. 411 */ 412 tsf = le64toh(ni->ni_tstamp.tsf); 413 414 ctxt_sta->dtim_tsf = htole64(tsf + dtim_offs); 415 ctxt_sta->dtim_time = htole32(tsf + dtim_offs); 416 417 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_BEACON | IWM_DEBUG_CMD, 418 "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 419 (long long)le64toh(ctxt_sta->dtim_tsf), 420 le32toh(ctxt_sta->dtim_time), dtim_offs); 421 422 ctxt_sta->is_assoc = htole32(1); 423 } else { 424 ctxt_sta->is_assoc = htole32(0); 425 } 426 427 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD | IWM_DEBUG_BEACON, 428 "%s: ni_intval: %d, bi_reciprocal: %d, dtim_interval: %d, dtim_reciprocal: %d\n", 429 __func__, 430 ni->ni_intval, 431 iwm_mvm_reciprocal(ni->ni_intval), 432 ni->ni_intval * dtim_period, 433 iwm_mvm_reciprocal(ni->ni_intval * dtim_period)); 434 435 ctxt_sta->bi = htole32(ni->ni_intval); 436 ctxt_sta->bi_reciprocal = htole32(iwm_mvm_reciprocal(ni->ni_intval)); 437 ctxt_sta->dtim_interval = htole32(ni->ni_intval * dtim_period); 438 ctxt_sta->dtim_reciprocal = 439 htole32(iwm_mvm_reciprocal(ni->ni_intval * dtim_period)); 440 441 /* 10 = CONN_MAX_LISTEN_INTERVAL */ 442 ctxt_sta->listen_interval = htole32(10); 443 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_CMD | IWM_DEBUG_BEACON, 444 "%s: associd=%d\n", __func__, IEEE80211_AID(ni->ni_associd)); 445 ctxt_sta->assoc_id = htole32(IEEE80211_AID(ni->ni_associd)); 446 } 447 448 static int 449 iwm_mvm_mac_ctxt_cmd_station(struct iwm_softc *sc, struct ieee80211vap *vap, 450 uint32_t action) 451 { 452 struct ieee80211_node *ni = vap->iv_bss; 453 struct iwm_node *in = IWM_NODE(ni); 454 struct iwm_mac_ctx_cmd cmd = {}; 455 456 IWM_DPRINTF(sc, IWM_DEBUG_RESET, 457 "%s: called; action=%d\n", __func__, action); 458 459 /* Fill the common data for all mac context types */ 460 iwm_mvm_mac_ctxt_cmd_common(sc, in, &cmd, action); 461 462 /* Allow beacons to pass through as long as we are not associated,or we 463 * do not have dtim period information */ 464 if (!in->in_assoc || !vap->iv_dtim_period) 465 cmd.filter_flags |= htole32(IWM_MAC_FILTER_IN_BEACON); 466 else 467 cmd.filter_flags &= ~htole32(IWM_MAC_FILTER_IN_BEACON); 468 469 /* Fill the data specific for station mode */ 470 iwm_mvm_mac_ctxt_cmd_fill_sta(sc, in, 471 &cmd.sta, action == IWM_FW_CTXT_ACTION_ADD); 472 473 return iwm_mvm_mac_ctxt_send_cmd(sc, &cmd); 474 } 475 476 static int 477 iwm_mvm_mac_ctx_send(struct iwm_softc *sc, struct ieee80211vap *vap, 478 uint32_t action) 479 { 480 return iwm_mvm_mac_ctxt_cmd_station(sc, vap, action); 481 } 482 483 int 484 iwm_mvm_mac_ctxt_add(struct iwm_softc *sc, struct ieee80211vap *vap) 485 { 486 struct iwm_vap *iv = IWM_VAP(vap); 487 int ret; 488 489 if (iv->is_uploaded != 0) { 490 device_printf(sc->sc_dev, "%s: called; uploaded != 0\n", 491 __func__); 492 return (EIO); 493 } 494 495 ret = iwm_mvm_mac_ctx_send(sc, vap, IWM_FW_CTXT_ACTION_ADD); 496 if (ret) 497 return (ret); 498 iv->is_uploaded = 1; 499 return (0); 500 } 501 502 int 503 iwm_mvm_mac_ctxt_changed(struct iwm_softc *sc, struct ieee80211vap *vap) 504 { 505 struct iwm_vap *iv = IWM_VAP(vap); 506 507 if (iv->is_uploaded == 0) { 508 device_printf(sc->sc_dev, "%s: called; uploaded = 0\n", 509 __func__); 510 return (EIO); 511 } 512 return iwm_mvm_mac_ctx_send(sc, vap, IWM_FW_CTXT_ACTION_MODIFY); 513 } 514 515 #if 0 516 static int 517 iwm_mvm_mac_ctxt_remove(struct iwm_softc *sc, struct iwm_node *in) 518 { 519 struct iwm_mac_ctx_cmd cmd; 520 int ret; 521 522 if (!in->in_uploaded) { 523 device_printf(sc->sc_dev, 524 "attempt to remove !uploaded node %p", in); 525 return EIO; 526 } 527 528 memset(&cmd, 0, sizeof(cmd)); 529 530 cmd.id_and_color = htole32(IWM_FW_CMD_ID_AND_COLOR(IWM_DEFAULT_MACID, 531 IWM_DEFAULT_COLOR)); 532 cmd.action = htole32(IWM_FW_CTXT_ACTION_REMOVE); 533 534 ret = iwm_mvm_send_cmd_pdu(sc, 535 IWM_MAC_CONTEXT_CMD, IWM_CMD_SYNC, sizeof(cmd), &cmd); 536 if (ret) { 537 device_printf(sc->sc_dev, 538 "Failed to remove MAC context: %d\n", ret); 539 return ret; 540 } 541 in->in_uploaded = 0; 542 543 return 0; 544 } 545 #endif 546