utils.c revision 15ef4137928738fd9c7024597a6dbce1ed186d1e
1/****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of version 2 of the GNU General Public License as 12 * published by the Free Software Foundation. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 22 * USA 23 * 24 * The full GNU General Public License is included in this distribution 25 * in the file called COPYING. 26 * 27 * Contact Information: 28 * Intel Linux Wireless <ilw@linux.intel.com> 29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 30 * 31 * BSD LICENSE 32 * 33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 40 * * Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * * Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in 44 * the documentation and/or other materials provided with the 45 * distribution. 46 * * Neither the name Intel Corporation nor the names of its 47 * contributors may be used to endorse or promote products derived 48 * from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 * 62 *****************************************************************************/ 63#include <net/mac80211.h> 64 65#include "iwl-debug.h" 66#include "iwl-io.h" 67 68#include "mvm.h" 69#include "fw-api-rs.h" 70 71/* 72 * Will return 0 even if the cmd failed when RFKILL is asserted unless 73 * CMD_WANT_SKB is set in cmd->flags. 74 */ 75int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 76{ 77 int ret; 78 79#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 80 if (WARN_ON(mvm->d3_test_active)) 81 return -EIO; 82#endif 83 84 /* 85 * Synchronous commands from this op-mode must hold 86 * the mutex, this ensures we don't try to send two 87 * (or more) synchronous commands at a time. 88 */ 89 if (!(cmd->flags & CMD_ASYNC)) 90 lockdep_assert_held(&mvm->mutex); 91 92 ret = iwl_trans_send_cmd(mvm->trans, cmd); 93 94 /* 95 * If the caller wants the SKB, then don't hide any problems, the 96 * caller might access the response buffer which will be NULL if 97 * the command failed. 98 */ 99 if (cmd->flags & CMD_WANT_SKB) 100 return ret; 101 102 /* Silently ignore failures if RFKILL is asserted */ 103 if (!ret || ret == -ERFKILL) 104 return 0; 105 return ret; 106} 107 108int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u8 id, 109 u32 flags, u16 len, const void *data) 110{ 111 struct iwl_host_cmd cmd = { 112 .id = id, 113 .len = { len, }, 114 .data = { data, }, 115 .flags = flags, 116 }; 117 118 return iwl_mvm_send_cmd(mvm, &cmd); 119} 120 121/* 122 * We assume that the caller set the status to the sucess value 123 */ 124int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 125 u32 *status) 126{ 127 struct iwl_rx_packet *pkt; 128 struct iwl_cmd_response *resp; 129 int ret, resp_len; 130 131 lockdep_assert_held(&mvm->mutex); 132 133#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 134 if (WARN_ON(mvm->d3_test_active)) 135 return -EIO; 136#endif 137 138 /* 139 * Only synchronous commands can wait for status, 140 * we use WANT_SKB so the caller can't. 141 */ 142 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 143 "cmd flags %x", cmd->flags)) 144 return -EINVAL; 145 146 cmd->flags |= CMD_SYNC | CMD_WANT_SKB; 147 148 ret = iwl_trans_send_cmd(mvm->trans, cmd); 149 if (ret == -ERFKILL) { 150 /* 151 * The command failed because of RFKILL, don't update 152 * the status, leave it as success and return 0. 153 */ 154 return 0; 155 } else if (ret) { 156 return ret; 157 } 158 159 pkt = cmd->resp_pkt; 160 /* Can happen if RFKILL is asserted */ 161 if (!pkt) { 162 ret = 0; 163 goto out_free_resp; 164 } 165 166 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { 167 ret = -EIO; 168 goto out_free_resp; 169 } 170 171 resp_len = iwl_rx_packet_payload_len(pkt); 172 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 173 ret = -EIO; 174 goto out_free_resp; 175 } 176 177 resp = (void *)pkt->data; 178 *status = le32_to_cpu(resp->status); 179 out_free_resp: 180 iwl_free_resp(cmd); 181 return ret; 182} 183 184/* 185 * We assume that the caller set the status to the sucess value 186 */ 187int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u8 id, u16 len, 188 const void *data, u32 *status) 189{ 190 struct iwl_host_cmd cmd = { 191 .id = id, 192 .len = { len, }, 193 .data = { data, }, 194 }; 195 196 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 197} 198 199#define IWL_DECLARE_RATE_INFO(r) \ 200 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP 201 202/* 203 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP 204 */ 205static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { 206 IWL_DECLARE_RATE_INFO(1), 207 IWL_DECLARE_RATE_INFO(2), 208 IWL_DECLARE_RATE_INFO(5), 209 IWL_DECLARE_RATE_INFO(11), 210 IWL_DECLARE_RATE_INFO(6), 211 IWL_DECLARE_RATE_INFO(9), 212 IWL_DECLARE_RATE_INFO(12), 213 IWL_DECLARE_RATE_INFO(18), 214 IWL_DECLARE_RATE_INFO(24), 215 IWL_DECLARE_RATE_INFO(36), 216 IWL_DECLARE_RATE_INFO(48), 217 IWL_DECLARE_RATE_INFO(54), 218}; 219 220int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 221 enum ieee80211_band band) 222{ 223 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 224 int idx; 225 int band_offset = 0; 226 227 /* Legacy rate format, search for match in table */ 228 if (band == IEEE80211_BAND_5GHZ) 229 band_offset = IWL_FIRST_OFDM_RATE; 230 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 231 if (fw_rate_idx_to_plcp[idx] == rate) 232 return idx - band_offset; 233 234 return -1; 235} 236 237u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx) 238{ 239 /* Get PLCP rate for tx_cmd->rate_n_flags */ 240 return fw_rate_idx_to_plcp[rate_idx]; 241} 242 243int iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, 244 struct iwl_device_cmd *cmd) 245{ 246 struct iwl_rx_packet *pkt = rxb_addr(rxb); 247 struct iwl_error_resp *err_resp = (void *)pkt->data; 248 249 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 250 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 251 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 252 le16_to_cpu(err_resp->bad_cmd_seq_num), 253 le32_to_cpu(err_resp->error_service)); 254 IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n", 255 le64_to_cpu(err_resp->timestamp)); 256 return 0; 257} 258 259/* 260 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 261 * The parameter should also be a combination of ANT_[ABC]. 262 */ 263u8 first_antenna(u8 mask) 264{ 265 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 266 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 267 return BIT(0); 268 return BIT(ffs(mask) - 1); 269} 270 271/* 272 * Toggles between TX antennas to send the probe request on. 273 * Receives the bitmask of valid TX antennas and the *index* used 274 * for the last TX, and returns the next valid *index* to use. 275 * In order to set it in the tx_cmd, must do BIT(idx). 276 */ 277u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 278{ 279 u8 ind = last_idx; 280 int i; 281 282 for (i = 0; i < RATE_MCS_ANT_NUM; i++) { 283 ind = (ind + 1) % RATE_MCS_ANT_NUM; 284 if (valid & BIT(ind)) 285 return ind; 286 } 287 288 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 289 return last_idx; 290} 291 292static struct { 293 char *name; 294 u8 num; 295} advanced_lookup[] = { 296 { "NMI_INTERRUPT_WDG", 0x34 }, 297 { "SYSASSERT", 0x35 }, 298 { "UCODE_VERSION_MISMATCH", 0x37 }, 299 { "BAD_COMMAND", 0x38 }, 300 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 301 { "FATAL_ERROR", 0x3D }, 302 { "NMI_TRM_HW_ERR", 0x46 }, 303 { "NMI_INTERRUPT_TRM", 0x4C }, 304 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 305 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 306 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 307 { "NMI_INTERRUPT_HOST", 0x66 }, 308 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 309 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 310 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 311 { "ADVANCED_SYSASSERT", 0 }, 312}; 313 314static const char *desc_lookup(u32 num) 315{ 316 int i; 317 318 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++) 319 if (advanced_lookup[i].num == num) 320 return advanced_lookup[i].name; 321 322 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */ 323 return advanced_lookup[i].name; 324} 325 326/* 327 * Note: This structure is read from the device with IO accesses, 328 * and the reading already does the endian conversion. As it is 329 * read with u32-sized accesses, any members with a different size 330 * need to be ordered correctly though! 331 */ 332struct iwl_error_event_table { 333 u32 valid; /* (nonzero) valid, (0) log is empty */ 334 u32 error_id; /* type of error */ 335 u32 pc; /* program counter */ 336 u32 blink1; /* branch link */ 337 u32 blink2; /* branch link */ 338 u32 ilink1; /* interrupt link */ 339 u32 ilink2; /* interrupt link */ 340 u32 data1; /* error-specific data */ 341 u32 data2; /* error-specific data */ 342 u32 data3; /* error-specific data */ 343 u32 bcon_time; /* beacon timer */ 344 u32 tsf_low; /* network timestamp function timer */ 345 u32 tsf_hi; /* network timestamp function timer */ 346 u32 gp1; /* GP1 timer register */ 347 u32 gp2; /* GP2 timer register */ 348 u32 gp3; /* GP3 timer register */ 349 u32 ucode_ver; /* uCode version */ 350 u32 hw_ver; /* HW Silicon version */ 351 u32 brd_ver; /* HW board version */ 352 u32 log_pc; /* log program counter */ 353 u32 frame_ptr; /* frame pointer */ 354 u32 stack_ptr; /* stack pointer */ 355 u32 hcmd; /* last host command header */ 356 u32 isr0; /* isr status register LMPM_NIC_ISR0: 357 * rxtx_flag */ 358 u32 isr1; /* isr status register LMPM_NIC_ISR1: 359 * host_flag */ 360 u32 isr2; /* isr status register LMPM_NIC_ISR2: 361 * enc_flag */ 362 u32 isr3; /* isr status register LMPM_NIC_ISR3: 363 * time_flag */ 364 u32 isr4; /* isr status register LMPM_NIC_ISR4: 365 * wico interrupt */ 366 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ 367 u32 wait_event; /* wait event() caller address */ 368 u32 l2p_control; /* L2pControlField */ 369 u32 l2p_duration; /* L2pDurationField */ 370 u32 l2p_mhvalid; /* L2pMhValidBits */ 371 u32 l2p_addr_match; /* L2pAddrMatchStat */ 372 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 373 * (LMPM_PMG_SEL) */ 374 u32 u_timestamp; /* indicate when the date and time of the 375 * compilation */ 376 u32 flow_handler; /* FH read/write pointers, RX credit */ 377} __packed; 378 379#define ERROR_START_OFFSET (1 * sizeof(u32)) 380#define ERROR_ELEM_SIZE (7 * sizeof(u32)) 381 382void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 383{ 384 struct iwl_trans *trans = mvm->trans; 385 struct iwl_error_event_table table; 386 u32 base; 387 388 base = mvm->error_event_table; 389 if (mvm->cur_ucode == IWL_UCODE_INIT) { 390 if (!base) 391 base = mvm->fw->init_errlog_ptr; 392 } else { 393 if (!base) 394 base = mvm->fw->inst_errlog_ptr; 395 } 396 397 if (base < 0x800000) { 398 IWL_ERR(mvm, 399 "Not valid error log pointer 0x%08X for %s uCode\n", 400 base, 401 (mvm->cur_ucode == IWL_UCODE_INIT) 402 ? "Init" : "RT"); 403 return; 404 } 405 406 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 407 408 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 409 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 410 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 411 mvm->status, table.valid); 412 } 413 414 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low, 415 table.data1, table.data2, table.data3, 416 table.blink1, table.blink2, table.ilink1, 417 table.ilink2, table.bcon_time, table.gp1, 418 table.gp2, table.gp3, table.ucode_ver, 419 table.hw_ver, table.brd_ver); 420 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 421 desc_lookup(table.error_id)); 422 IWL_ERR(mvm, "0x%08X | uPc\n", table.pc); 423 IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1); 424 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 425 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 426 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 427 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 428 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 429 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 430 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 431 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 432 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 433 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 434 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 435 IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3); 436 IWL_ERR(mvm, "0x%08X | uCode version\n", table.ucode_ver); 437 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 438 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 439 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 440 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 441 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 442 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 443 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 444 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 445 IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref); 446 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 447 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 448 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 449 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 450 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 451 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 452 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 453 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 454} 455 456void iwl_mvm_dump_sram(struct iwl_mvm *mvm) 457{ 458 const struct fw_img *img; 459 int ofs, len = 0; 460 int i; 461 __le32 *buf; 462 463 if (!mvm->ucode_loaded) 464 return; 465 466 img = &mvm->fw->img[mvm->cur_ucode]; 467 ofs = img->sec[IWL_UCODE_SECTION_DATA].offset; 468 len = img->sec[IWL_UCODE_SECTION_DATA].len; 469 470 buf = kzalloc(len, GFP_ATOMIC); 471 if (!buf) 472 return; 473 474 iwl_trans_read_mem_bytes(mvm->trans, ofs, buf, len); 475 len = len >> 2; 476 for (i = 0; i < len; i++) { 477 IWL_ERR(mvm, "0x%08X\n", le32_to_cpu(buf[i])); 478 /* Add a small delay to let syslog catch up */ 479 udelay(10); 480 } 481 482 kfree(buf); 483} 484 485/** 486 * iwl_mvm_send_lq_cmd() - Send link quality command 487 * @init: This command is sent as part of station initialization right 488 * after station has been added. 489 * 490 * The link quality command is sent as the last step of station creation. 491 * This is the special case in which init is set and we call a callback in 492 * this case to clear the state indicating that station creation is in 493 * progress. 494 */ 495int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init) 496{ 497 struct iwl_host_cmd cmd = { 498 .id = LQ_CMD, 499 .len = { sizeof(struct iwl_lq_cmd), }, 500 .flags = init ? CMD_SYNC : CMD_ASYNC, 501 .data = { lq, }, 502 }; 503 504 if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT)) 505 return -EINVAL; 506 507 return iwl_mvm_send_cmd(mvm, &cmd); 508} 509 510/** 511 * iwl_mvm_update_smps - Get a requst to change the SMPS mode 512 * @req_type: The part of the driver who call for a change. 513 * @smps_requests: The request to change the SMPS mode. 514 * 515 * Get a requst to change the SMPS mode, 516 * and change it according to all other requests in the driver. 517 */ 518void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 519 enum iwl_mvm_smps_type_request req_type, 520 enum ieee80211_smps_mode smps_request) 521{ 522 struct iwl_mvm_vif *mvmvif; 523 enum ieee80211_smps_mode smps_mode; 524 int i; 525 526 lockdep_assert_held(&mvm->mutex); 527 528 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 529 if (num_of_ant(iwl_fw_valid_rx_ant(mvm->fw)) == 1) 530 return; 531 532 if (vif->type == NL80211_IFTYPE_AP) 533 smps_mode = IEEE80211_SMPS_OFF; 534 else 535 smps_mode = IEEE80211_SMPS_AUTOMATIC; 536 537 mvmvif = iwl_mvm_vif_from_mac80211(vif); 538 mvmvif->smps_requests[req_type] = smps_request; 539 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 540 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 541 smps_mode = IEEE80211_SMPS_STATIC; 542 break; 543 } 544 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 545 smps_mode = IEEE80211_SMPS_DYNAMIC; 546 } 547 548 ieee80211_request_smps(vif, smps_mode); 549} 550 551int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 552 bool value) 553{ 554 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 555 int res; 556 557 lockdep_assert_held(&mvm->mutex); 558 559 mvmvif->low_latency = value; 560 561 res = iwl_mvm_update_quotas(mvm, NULL); 562 if (res) 563 return res; 564 565 iwl_mvm_bt_coex_vif_change(mvm); 566 567 return iwl_mvm_power_update_mac(mvm, vif); 568} 569