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: releng/11.0/sys/dev/iwm/if_iwm_scan.c 303628 2016-08-01 17:51:35Z sbruno $"); 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_scan.h> 158 159/* 160 * BEGIN mvm/scan.c 161 */ 162 163#define IWM_PLCP_QUIET_THRESH 1 164#define IWM_ACTIVE_QUIET_TIME 10 165#define LONG_OUT_TIME_PERIOD (600 * IEEE80211_DUR_TU) 166#define SHORT_OUT_TIME_PERIOD (200 * IEEE80211_DUR_TU) 167#define SUSPEND_TIME_PERIOD (100 * IEEE80211_DUR_TU) 168 169static uint16_t 170iwm_mvm_scan_rx_chain(struct iwm_softc *sc) 171{ 172 uint16_t rx_chain; 173 uint8_t rx_ant; 174 175 rx_ant = iwm_fw_valid_rx_ant(sc); 176 rx_chain = rx_ant << IWM_PHY_RX_CHAIN_VALID_POS; 177 rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 178 rx_chain |= rx_ant << IWM_PHY_RX_CHAIN_FORCE_SEL_POS; 179 rx_chain |= 0x1 << IWM_PHY_RX_CHAIN_DRIVER_FORCE_POS; 180 return htole16(rx_chain); 181} 182 183#if 0 184static uint32_t 185iwm_mvm_scan_max_out_time(struct iwm_softc *sc, uint32_t flags, int is_assoc) 186{ 187 if (!is_assoc) 188 return 0; 189 if (flags & 0x1) 190 return htole32(SHORT_OUT_TIME_PERIOD); 191 return htole32(LONG_OUT_TIME_PERIOD); 192} 193 194static uint32_t 195iwm_mvm_scan_suspend_time(struct iwm_softc *sc, int is_assoc) 196{ 197 if (!is_assoc) 198 return 0; 199 return htole32(SUSPEND_TIME_PERIOD); 200} 201#endif 202 203static uint32_t 204iwm_mvm_scan_rate_n_flags(struct iwm_softc *sc, int flags, int no_cck) 205{ 206 uint32_t tx_ant; 207 int i, ind; 208 209 for (i = 0, ind = sc->sc_scan_last_antenna; 210 i < IWM_RATE_MCS_ANT_NUM; i++) { 211 ind = (ind + 1) % IWM_RATE_MCS_ANT_NUM; 212 if (iwm_fw_valid_tx_ant(sc) & (1 << ind)) { 213 sc->sc_scan_last_antenna = ind; 214 break; 215 } 216 } 217 tx_ant = (1 << sc->sc_scan_last_antenna) << IWM_RATE_MCS_ANT_POS; 218 219 if ((flags & IEEE80211_CHAN_2GHZ) && !no_cck) 220 return htole32(IWM_RATE_1M_PLCP | IWM_RATE_MCS_CCK_MSK | 221 tx_ant); 222 else 223 return htole32(IWM_RATE_6M_PLCP | tx_ant); 224} 225 226#if 0 227/* 228 * If req->n_ssids > 0, it means we should do an active scan. 229 * In case of active scan w/o directed scan, we receive a zero-length SSID 230 * just to notify that this scan is active and not passive. 231 * In order to notify the FW of the number of SSIDs we wish to scan (including 232 * the zero-length one), we need to set the corresponding bits in chan->type, 233 * one for each SSID, and set the active bit (first). If the first SSID is 234 * already included in the probe template, so we need to set only 235 * req->n_ssids - 1 bits in addition to the first bit. 236 */ 237static uint16_t 238iwm_mvm_get_active_dwell(struct iwm_softc *sc, int flags, int n_ssids) 239{ 240 if (flags & IEEE80211_CHAN_2GHZ) 241 return 30 + 3 * (n_ssids + 1); 242 return 20 + 2 * (n_ssids + 1); 243} 244 245static uint16_t 246iwm_mvm_get_passive_dwell(struct iwm_softc *sc, int flags) 247{ 248 return (flags & IEEE80211_CHAN_2GHZ) ? 100 + 20 : 100 + 10; 249} 250#endif 251 252static int 253iwm_mvm_scan_skip_channel(struct ieee80211_channel *c) 254{ 255 if (IEEE80211_IS_CHAN_2GHZ(c) && IEEE80211_IS_CHAN_B(c)) 256 return 0; 257 else if (IEEE80211_IS_CHAN_5GHZ(c) && IEEE80211_IS_CHAN_A(c)) 258 return 0; 259 else 260 return 1; 261} 262 263static uint8_t 264iwm_mvm_lmac_scan_fill_channels(struct iwm_softc *sc, 265 struct iwm_scan_channel_cfg_lmac *chan, int n_ssids) 266{ 267 struct ieee80211com *ic = &sc->sc_ic; 268 struct ieee80211_channel *c; 269 uint8_t nchan; 270 int j; 271 272 for (nchan = j = 0; 273 j < ic->ic_nchans && nchan < sc->sc_capa_n_scan_channels; j++) { 274 c = &ic->ic_channels[j]; 275 /* For 2GHz, only populate 11b channels */ 276 /* For 5GHz, only populate 11a channels */ 277 /* 278 * Catch other channels, in case we have 900MHz channels or 279 * something in the chanlist. 280 */ 281 if (iwm_mvm_scan_skip_channel(c)) { 282 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 283 "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n", 284 __func__, c->ic_freq, c->ic_ieee, c->ic_flags); 285 continue; 286 } 287 288 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 289 "Adding channel %d (%d Mhz) to the list\n", 290 nchan, c->ic_freq); 291 chan->channel_num = htole16(ieee80211_mhz2ieee(c->ic_freq, 0)); 292 chan->iter_count = htole16(1); 293 chan->iter_interval = htole32(0); 294 chan->flags = htole32(IWM_UNIFIED_SCAN_CHANNEL_PARTIAL); 295#if 0 /* makes scanning while associated less useful */ 296 if (n_ssids != 0) 297 chan->flags |= htole32(1 << 1); /* select SSID 0 */ 298#endif 299 chan++; 300 nchan++; 301 } 302 303 return nchan; 304} 305 306static uint8_t 307iwm_mvm_umac_scan_fill_channels(struct iwm_softc *sc, 308 struct iwm_scan_channel_cfg_umac *chan, int n_ssids) 309{ 310 struct ieee80211com *ic = &sc->sc_ic; 311 struct ieee80211_channel *c; 312 uint8_t nchan; 313 int j; 314 315 for (nchan = j = 0; 316 j < ic->ic_nchans && nchan < sc->sc_capa_n_scan_channels; j++) { 317 c = &ic->ic_channels[j]; 318 /* For 2GHz, only populate 11b channels */ 319 /* For 5GHz, only populate 11a channels */ 320 /* 321 * Catch other channels, in case we have 900MHz channels or 322 * something in the chanlist. 323 */ 324 if (iwm_mvm_scan_skip_channel(c)) { 325 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 326 "%s: skipping channel (freq=%d, ieee=%d, flags=0x%08x)\n", 327 __func__, c->ic_freq, c->ic_ieee, c->ic_flags); 328 continue; 329 } 330 331 IWM_DPRINTF(sc, IWM_DEBUG_RESET | IWM_DEBUG_EEPROM, 332 "Adding channel %d (%d Mhz) to the list\n", 333 nchan, c->ic_freq); 334 chan->channel_num = ieee80211_mhz2ieee(c->ic_freq, 0); 335 chan->iter_count = 1; 336 chan->iter_interval = htole16(0); 337 chan->flags = htole32(0); 338#if 0 /* makes scanning while associated less useful */ 339 if (n_ssids != 0) 340 chan->flags = htole32(1 << 0); /* select SSID 0 */ 341#endif 342 chan++; 343 nchan++; 344 } 345 346 return nchan; 347} 348 349static int 350iwm_mvm_fill_probe_req(struct iwm_softc *sc, struct iwm_scan_probe_req *preq) 351{ 352 struct ieee80211com *ic = &sc->sc_ic; 353 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 354 struct ieee80211_frame *wh = (struct ieee80211_frame *)preq->buf; 355 struct ieee80211_rateset *rs; 356 size_t remain = sizeof(preq->buf); 357 uint8_t *frm, *pos; 358 int ssid_len = 0; 359 const uint8_t *ssid = NULL; 360 361 memset(preq, 0, sizeof(*preq)); 362 363 /* Ensure enough space for header and SSID IE. */ 364 if (remain < sizeof(*wh) + 2 + ssid_len) 365 return ENOBUFS; 366 367 /* 368 * Build a probe request frame. Most of the following code is a 369 * copy & paste of what is done in net80211. 370 */ 371 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT | 372 IEEE80211_FC0_SUBTYPE_PROBE_REQ; 373 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 374 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr); 375 IEEE80211_ADDR_COPY(wh->i_addr2, vap ? vap->iv_myaddr : ic->ic_macaddr); 376 IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr); 377 *(uint16_t *)&wh->i_dur[0] = 0; /* filled by HW */ 378 *(uint16_t *)&wh->i_seq[0] = 0; /* filled by HW */ 379 380 frm = (uint8_t *)(wh + 1); 381 frm = ieee80211_add_ssid(frm, ssid, ssid_len); 382 383 /* Tell the firmware where the MAC header is. */ 384 preq->mac_header.offset = 0; 385 preq->mac_header.len = htole16(frm - (uint8_t *)wh); 386 remain -= frm - (uint8_t *)wh; 387 388 /* Fill in 2GHz IEs and tell firmware where they are. */ 389 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 390 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 391 if (remain < 4 + rs->rs_nrates) 392 return ENOBUFS; 393 } else if (remain < 2 + rs->rs_nrates) { 394 return ENOBUFS; 395 } 396 preq->band_data[0].offset = htole16(frm - (uint8_t *)wh); 397 pos = frm; 398 frm = ieee80211_add_rates(frm, rs); 399 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 400 frm = ieee80211_add_xrates(frm, rs); 401 preq->band_data[0].len = htole16(frm - pos); 402 remain -= frm - pos; 403 404 if (isset(sc->sc_enabled_capa, 405 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) { 406 if (remain < 3) 407 return ENOBUFS; 408 *frm++ = IEEE80211_ELEMID_DSPARMS; 409 *frm++ = 1; 410 *frm++ = 0; 411 remain -= 3; 412 } 413 414 if (sc->sc_nvm.sku_cap_band_52GHz_enable) { 415 /* Fill in 5GHz IEs. */ 416 rs = &ic->ic_sup_rates[IEEE80211_MODE_11A]; 417 if (rs->rs_nrates > IEEE80211_RATE_SIZE) { 418 if (remain < 4 + rs->rs_nrates) 419 return ENOBUFS; 420 } else if (remain < 2 + rs->rs_nrates) { 421 return ENOBUFS; 422 } 423 preq->band_data[1].offset = htole16(frm - (uint8_t *)wh); 424 pos = frm; 425 frm = ieee80211_add_rates(frm, rs); 426 if (rs->rs_nrates > IEEE80211_RATE_SIZE) 427 frm = ieee80211_add_xrates(frm, rs); 428 preq->band_data[1].len = htole16(frm - pos); 429 remain -= frm - pos; 430 } 431 432 /* Send 11n IEs on both 2GHz and 5GHz bands. */ 433 preq->common_data.offset = htole16(frm - (uint8_t *)wh); 434 pos = frm; 435#if 0 436 if (ic->ic_flags & IEEE80211_F_HTON) { 437 if (remain < 28) 438 return ENOBUFS; 439 frm = ieee80211_add_htcaps(frm, ic); 440 /* XXX add WME info? */ 441 } 442#endif 443 preq->common_data.len = htole16(frm - pos); 444 445 return 0; 446} 447 448int 449iwm_mvm_config_umac_scan(struct iwm_softc *sc) 450{ 451 struct ieee80211com *ic = &sc->sc_ic; 452 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 453 454 struct iwm_scan_config *scan_config; 455 int ret, j, nchan; 456 size_t cmd_size; 457 struct ieee80211_channel *c; 458 struct iwm_host_cmd hcmd = { 459 .id = iwm_cmd_id(IWM_SCAN_CFG_CMD, IWM_ALWAYS_LONG_GROUP, 0), 460 .flags = IWM_CMD_SYNC, 461 }; 462 static const uint32_t rates = (IWM_SCAN_CONFIG_RATE_1M | 463 IWM_SCAN_CONFIG_RATE_2M | IWM_SCAN_CONFIG_RATE_5M | 464 IWM_SCAN_CONFIG_RATE_11M | IWM_SCAN_CONFIG_RATE_6M | 465 IWM_SCAN_CONFIG_RATE_9M | IWM_SCAN_CONFIG_RATE_12M | 466 IWM_SCAN_CONFIG_RATE_18M | IWM_SCAN_CONFIG_RATE_24M | 467 IWM_SCAN_CONFIG_RATE_36M | IWM_SCAN_CONFIG_RATE_48M | 468 IWM_SCAN_CONFIG_RATE_54M); 469 470 cmd_size = sizeof(*scan_config) + sc->sc_capa_n_scan_channels; 471 472 scan_config = malloc(cmd_size, M_DEVBUF, M_NOWAIT | M_ZERO); 473 if (scan_config == NULL) 474 return ENOMEM; 475 476 scan_config->tx_chains = htole32(iwm_fw_valid_tx_ant(sc)); 477 scan_config->rx_chains = htole32(iwm_fw_valid_rx_ant(sc)); 478 scan_config->legacy_rates = htole32(rates | 479 IWM_SCAN_CONFIG_SUPPORTED_RATE(rates)); 480 481 /* These timings correspond to iwlwifi's UNASSOC scan. */ 482 scan_config->dwell_active = 10; 483 scan_config->dwell_passive = 110; 484 scan_config->dwell_fragmented = 44; 485 scan_config->dwell_extended = 90; 486 scan_config->out_of_channel_time = htole32(0); 487 scan_config->suspend_time = htole32(0); 488 489 IEEE80211_ADDR_COPY(scan_config->mac_addr, 490 vap ? vap->iv_myaddr : ic->ic_macaddr); 491 492 scan_config->bcast_sta_id = sc->sc_aux_sta.sta_id; 493 scan_config->channel_flags = IWM_CHANNEL_FLAG_EBS | 494 IWM_CHANNEL_FLAG_ACCURATE_EBS | IWM_CHANNEL_FLAG_EBS_ADD | 495 IWM_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 496 497 for (nchan = j = 0; 498 j < ic->ic_nchans && nchan < sc->sc_capa_n_scan_channels; j++) { 499 c = &ic->ic_channels[j]; 500 /* For 2GHz, only populate 11b channels */ 501 /* For 5GHz, only populate 11a channels */ 502 /* 503 * Catch other channels, in case we have 900MHz channels or 504 * something in the chanlist. 505 */ 506 if (iwm_mvm_scan_skip_channel(c)) 507 continue; 508 scan_config->channel_array[nchan++] = 509 ieee80211_mhz2ieee(c->ic_freq, 0); 510 } 511 512 scan_config->flags = htole32(IWM_SCAN_CONFIG_FLAG_ACTIVATE | 513 IWM_SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 514 IWM_SCAN_CONFIG_FLAG_SET_TX_CHAINS | 515 IWM_SCAN_CONFIG_FLAG_SET_RX_CHAINS | 516 IWM_SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 517 IWM_SCAN_CONFIG_FLAG_SET_ALL_TIMES | 518 IWM_SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 519 IWM_SCAN_CONFIG_FLAG_SET_MAC_ADDR | 520 IWM_SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| 521 IWM_SCAN_CONFIG_N_CHANNELS(nchan) | 522 IWM_SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 523 524 hcmd.data[0] = scan_config; 525 hcmd.len[0] = cmd_size; 526 527 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Sending UMAC scan config\n"); 528 529 ret = iwm_send_cmd(sc, &hcmd); 530 if (!ret) 531 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 532 "UMAC scan config was sent successfully\n"); 533 534 free(scan_config, M_DEVBUF); 535 return ret; 536} 537 538int 539iwm_mvm_umac_scan(struct iwm_softc *sc) 540{ 541 struct iwm_host_cmd hcmd = { 542 .id = iwm_cmd_id(IWM_SCAN_REQ_UMAC, IWM_ALWAYS_LONG_GROUP, 0), 543 .len = { 0, }, 544 .data = { NULL, }, 545 .flags = IWM_CMD_SYNC, 546 }; 547 struct iwm_scan_req_umac *req; 548 struct iwm_scan_req_umac_tail *tail; 549 size_t req_len; 550 int ssid_len = 0; 551 const uint8_t *ssid = NULL; 552 int ret; 553 554 req_len = sizeof(struct iwm_scan_req_umac) + 555 (sizeof(struct iwm_scan_channel_cfg_umac) * 556 sc->sc_capa_n_scan_channels) + 557 sizeof(struct iwm_scan_req_umac_tail); 558 if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE) 559 return ENOMEM; 560 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO); 561 if (req == NULL) 562 return ENOMEM; 563 564 hcmd.len[0] = (uint16_t)req_len; 565 hcmd.data[0] = (void *)req; 566 567 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, "Handling ieee80211 scan request\n"); 568 569 /* These timings correspond to iwlwifi's UNASSOC scan. */ 570 req->active_dwell = 10; 571 req->passive_dwell = 110; 572 req->fragmented_dwell = 44; 573 req->extended_dwell = 90; 574 req->max_out_time = 0; 575 req->suspend_time = 0; 576 577 req->scan_priority = htole32(IWM_SCAN_PRIORITY_HIGH); 578 req->ooc_priority = htole32(IWM_SCAN_PRIORITY_HIGH); 579 580 req->n_channels = iwm_mvm_umac_scan_fill_channels(sc, 581 (struct iwm_scan_channel_cfg_umac *)req->data, ssid_len != 0); 582 583 req->general_flags = htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASS_ALL | 584 IWM_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE | 585 IWM_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL); 586 587 tail = (void *)((char *)&req->data + 588 sizeof(struct iwm_scan_channel_cfg_umac) * 589 sc->sc_capa_n_scan_channels); 590 591 /* Check if we're doing an active directed scan. */ 592 if (ssid_len != 0) { 593 tail->direct_scan[0].id = IEEE80211_ELEMID_SSID; 594 tail->direct_scan[0].len = ssid_len; 595 memcpy(tail->direct_scan[0].ssid, ssid, ssid_len); 596 req->general_flags |= 597 htole32(IWM_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT); 598 } else { 599 req->general_flags |= htole32(IWM_UMAC_SCAN_GEN_FLAGS_PASSIVE); 600 } 601 602 if (isset(sc->sc_enabled_capa, 603 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 604 req->general_flags |= 605 htole32(IWM_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED); 606 607 ret = iwm_mvm_fill_probe_req(sc, &tail->preq); 608 if (ret) { 609 free(req, M_DEVBUF); 610 return ret; 611 } 612 613 /* Specify the scan plan: We'll do one iteration. */ 614 tail->schedule[0].interval = 0; 615 tail->schedule[0].iter_count = 1; 616 617 ret = iwm_send_cmd(sc, &hcmd); 618 if (!ret) 619 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 620 "Scan request was sent successfully\n"); 621 free(req, M_DEVBUF); 622 return ret; 623} 624 625int 626iwm_mvm_lmac_scan(struct iwm_softc *sc) 627{ 628 struct iwm_host_cmd hcmd = { 629 .id = IWM_SCAN_OFFLOAD_REQUEST_CMD, 630 .len = { 0, }, 631 .data = { NULL, }, 632 .flags = IWM_CMD_SYNC, 633 }; 634 struct iwm_scan_req_lmac *req; 635 size_t req_len; 636 int ret; 637 int ssid_len = 0; 638 const uint8_t *ssid = NULL; 639 640 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 641 "Handling ieee80211 scan request\n"); 642 643 req_len = sizeof(struct iwm_scan_req_lmac) + 644 (sizeof(struct iwm_scan_channel_cfg_lmac) * 645 sc->sc_capa_n_scan_channels) + sizeof(struct iwm_scan_probe_req); 646 if (req_len > IWM_MAX_CMD_PAYLOAD_SIZE) 647 return ENOMEM; 648 req = malloc(req_len, M_DEVBUF, M_NOWAIT | M_ZERO); 649 if (req == NULL) 650 return ENOMEM; 651 652 hcmd.len[0] = (uint16_t)req_len; 653 hcmd.data[0] = (void *)req; 654 655 /* These timings correspond to iwlwifi's UNASSOC scan. */ 656 req->active_dwell = 10; 657 req->passive_dwell = 110; 658 req->fragmented_dwell = 44; 659 req->extended_dwell = 90; 660 req->max_out_time = 0; 661 req->suspend_time = 0; 662 663 req->scan_prio = htole32(IWM_SCAN_PRIORITY_HIGH); 664 req->rx_chain_select = iwm_mvm_scan_rx_chain(sc); 665 req->iter_num = htole32(1); 666 req->delay = 0; 667 668 req->scan_flags = htole32(IWM_MVM_LMAC_SCAN_FLAG_PASS_ALL | 669 IWM_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE | 670 IWM_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL); 671 if (ssid_len == 0) 672 req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAG_PASSIVE); 673 else 674 req->scan_flags |= 675 htole32(IWM_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION); 676 if (isset(sc->sc_enabled_capa, 677 IWM_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 678 req->scan_flags |= htole32(IWM_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED); 679 680 req->flags = htole32(IWM_PHY_BAND_24); 681 if (sc->sc_nvm.sku_cap_band_52GHz_enable) 682 req->flags |= htole32(IWM_PHY_BAND_5); 683 req->filter_flags = 684 htole32(IWM_MAC_FILTER_ACCEPT_GRP | IWM_MAC_FILTER_IN_BEACON); 685 686 /* Tx flags 2 GHz. */ 687 req->tx_cmd[0].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL | 688 IWM_TX_CMD_FLG_BT_DIS); 689 req->tx_cmd[0].rate_n_flags = 690 iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_2GHZ, 1/*XXX*/); 691 req->tx_cmd[0].sta_id = sc->sc_aux_sta.sta_id; 692 693 /* Tx flags 5 GHz. */ 694 req->tx_cmd[1].tx_flags = htole32(IWM_TX_CMD_FLG_SEQ_CTL | 695 IWM_TX_CMD_FLG_BT_DIS); 696 req->tx_cmd[1].rate_n_flags = 697 iwm_mvm_scan_rate_n_flags(sc, IEEE80211_CHAN_5GHZ, 1/*XXX*/); 698 req->tx_cmd[1].sta_id = sc->sc_aux_sta.sta_id; 699 700 /* Check if we're doing an active directed scan. */ 701 if (ssid_len != 0) { 702 req->direct_scan[0].id = IEEE80211_ELEMID_SSID; 703 req->direct_scan[0].len = ssid_len; 704 memcpy(req->direct_scan[0].ssid, ssid, ssid_len); 705 } 706 707 req->n_channels = iwm_mvm_lmac_scan_fill_channels(sc, 708 (struct iwm_scan_channel_cfg_lmac *)req->data, 709 ssid_len != 0); 710 711 ret = iwm_mvm_fill_probe_req(sc, 712 (struct iwm_scan_probe_req *)(req->data + 713 (sizeof(struct iwm_scan_channel_cfg_lmac) * 714 sc->sc_capa_n_scan_channels))); 715 if (ret) { 716 free(req, M_DEVBUF); 717 return ret; 718 } 719 720 /* Specify the scan plan: We'll do one iteration. */ 721 req->schedule[0].iterations = 1; 722 req->schedule[0].full_scan_mul = 1; 723 724 /* Disable EBS. */ 725 req->channel_opt[0].non_ebs_ratio = 1; 726 req->channel_opt[1].non_ebs_ratio = 1; 727 728 ret = iwm_send_cmd(sc, &hcmd); 729 if (!ret) { 730 IWM_DPRINTF(sc, IWM_DEBUG_SCAN, 731 "Scan request was sent successfully\n"); 732 } 733 free(req, M_DEVBUF); 734 return ret; 735} 736