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