1/****************************************************************************** 2 * 3 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. 4 * 5 * Portions of this file are derived from the ipw3945 project, as well 6 * as portionhelp of the ieee80211 subsystem header files. 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of version 2 of the GNU General Public License as 10 * published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along with 18 * this program; if not, write to the Free Software Foundation, Inc., 19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA 20 * 21 * The full GNU General Public License is included in this distribution in the 22 * file called LICENSE. 23 * 24 * Contact Information: 25 * Intel Linux Wireless <ilw@linux.intel.com> 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27 * 28 *****************************************************************************/ 29 30#include <linux/etherdevice.h> 31#include <linux/slab.h> 32#include <linux/sched.h> 33#include <net/mac80211.h> 34#include <asm/unaligned.h> 35#include "iwl-io.h" 36#include "dev.h" 37#include "calib.h" 38#include "agn.h" 39 40#define IWL_CMD_ENTRY(x) [x] = #x 41 42const char *const iwl_dvm_cmd_strings[REPLY_MAX] = { 43 IWL_CMD_ENTRY(REPLY_ALIVE), 44 IWL_CMD_ENTRY(REPLY_ERROR), 45 IWL_CMD_ENTRY(REPLY_ECHO), 46 IWL_CMD_ENTRY(REPLY_RXON), 47 IWL_CMD_ENTRY(REPLY_RXON_ASSOC), 48 IWL_CMD_ENTRY(REPLY_QOS_PARAM), 49 IWL_CMD_ENTRY(REPLY_RXON_TIMING), 50 IWL_CMD_ENTRY(REPLY_ADD_STA), 51 IWL_CMD_ENTRY(REPLY_REMOVE_STA), 52 IWL_CMD_ENTRY(REPLY_REMOVE_ALL_STA), 53 IWL_CMD_ENTRY(REPLY_TXFIFO_FLUSH), 54 IWL_CMD_ENTRY(REPLY_WEPKEY), 55 IWL_CMD_ENTRY(REPLY_TX), 56 IWL_CMD_ENTRY(REPLY_LEDS_CMD), 57 IWL_CMD_ENTRY(REPLY_TX_LINK_QUALITY_CMD), 58 IWL_CMD_ENTRY(COEX_PRIORITY_TABLE_CMD), 59 IWL_CMD_ENTRY(COEX_MEDIUM_NOTIFICATION), 60 IWL_CMD_ENTRY(COEX_EVENT_CMD), 61 IWL_CMD_ENTRY(REPLY_QUIET_CMD), 62 IWL_CMD_ENTRY(REPLY_CHANNEL_SWITCH), 63 IWL_CMD_ENTRY(CHANNEL_SWITCH_NOTIFICATION), 64 IWL_CMD_ENTRY(REPLY_SPECTRUM_MEASUREMENT_CMD), 65 IWL_CMD_ENTRY(SPECTRUM_MEASURE_NOTIFICATION), 66 IWL_CMD_ENTRY(POWER_TABLE_CMD), 67 IWL_CMD_ENTRY(PM_SLEEP_NOTIFICATION), 68 IWL_CMD_ENTRY(PM_DEBUG_STATISTIC_NOTIFIC), 69 IWL_CMD_ENTRY(REPLY_SCAN_CMD), 70 IWL_CMD_ENTRY(REPLY_SCAN_ABORT_CMD), 71 IWL_CMD_ENTRY(SCAN_START_NOTIFICATION), 72 IWL_CMD_ENTRY(SCAN_RESULTS_NOTIFICATION), 73 IWL_CMD_ENTRY(SCAN_COMPLETE_NOTIFICATION), 74 IWL_CMD_ENTRY(BEACON_NOTIFICATION), 75 IWL_CMD_ENTRY(REPLY_TX_BEACON), 76 IWL_CMD_ENTRY(WHO_IS_AWAKE_NOTIFICATION), 77 IWL_CMD_ENTRY(QUIET_NOTIFICATION), 78 IWL_CMD_ENTRY(REPLY_TX_PWR_TABLE_CMD), 79 IWL_CMD_ENTRY(MEASURE_ABORT_NOTIFICATION), 80 IWL_CMD_ENTRY(REPLY_BT_CONFIG), 81 IWL_CMD_ENTRY(REPLY_STATISTICS_CMD), 82 IWL_CMD_ENTRY(STATISTICS_NOTIFICATION), 83 IWL_CMD_ENTRY(REPLY_CARD_STATE_CMD), 84 IWL_CMD_ENTRY(CARD_STATE_NOTIFICATION), 85 IWL_CMD_ENTRY(MISSED_BEACONS_NOTIFICATION), 86 IWL_CMD_ENTRY(REPLY_CT_KILL_CONFIG_CMD), 87 IWL_CMD_ENTRY(SENSITIVITY_CMD), 88 IWL_CMD_ENTRY(REPLY_PHY_CALIBRATION_CMD), 89 IWL_CMD_ENTRY(REPLY_RX_PHY_CMD), 90 IWL_CMD_ENTRY(REPLY_RX_MPDU_CMD), 91 IWL_CMD_ENTRY(REPLY_COMPRESSED_BA), 92 IWL_CMD_ENTRY(CALIBRATION_CFG_CMD), 93 IWL_CMD_ENTRY(CALIBRATION_RES_NOTIFICATION), 94 IWL_CMD_ENTRY(CALIBRATION_COMPLETE_NOTIFICATION), 95 IWL_CMD_ENTRY(REPLY_TX_POWER_DBM_CMD), 96 IWL_CMD_ENTRY(TEMPERATURE_NOTIFICATION), 97 IWL_CMD_ENTRY(TX_ANT_CONFIGURATION_CMD), 98 IWL_CMD_ENTRY(REPLY_BT_COEX_PROFILE_NOTIF), 99 IWL_CMD_ENTRY(REPLY_BT_COEX_PRIO_TABLE), 100 IWL_CMD_ENTRY(REPLY_BT_COEX_PROT_ENV), 101 IWL_CMD_ENTRY(REPLY_WIPAN_PARAMS), 102 IWL_CMD_ENTRY(REPLY_WIPAN_RXON), 103 IWL_CMD_ENTRY(REPLY_WIPAN_RXON_TIMING), 104 IWL_CMD_ENTRY(REPLY_WIPAN_RXON_ASSOC), 105 IWL_CMD_ENTRY(REPLY_WIPAN_QOS_PARAM), 106 IWL_CMD_ENTRY(REPLY_WIPAN_WEPKEY), 107 IWL_CMD_ENTRY(REPLY_WIPAN_P2P_CHANNEL_SWITCH), 108 IWL_CMD_ENTRY(REPLY_WIPAN_NOA_NOTIFICATION), 109 IWL_CMD_ENTRY(REPLY_WIPAN_DEACTIVATION_COMPLETE), 110 IWL_CMD_ENTRY(REPLY_WOWLAN_PATTERNS), 111 IWL_CMD_ENTRY(REPLY_WOWLAN_WAKEUP_FILTER), 112 IWL_CMD_ENTRY(REPLY_WOWLAN_TSC_RSC_PARAMS), 113 IWL_CMD_ENTRY(REPLY_WOWLAN_TKIP_PARAMS), 114 IWL_CMD_ENTRY(REPLY_WOWLAN_KEK_KCK_MATERIAL), 115 IWL_CMD_ENTRY(REPLY_WOWLAN_GET_STATUS), 116 IWL_CMD_ENTRY(REPLY_D3_CONFIG), 117}; 118#undef IWL_CMD_ENTRY 119 120/****************************************************************************** 121 * 122 * Generic RX handler implementations 123 * 124 ******************************************************************************/ 125 126static int iwlagn_rx_reply_error(struct iwl_priv *priv, 127 struct iwl_rx_cmd_buffer *rxb, 128 struct iwl_device_cmd *cmd) 129{ 130 struct iwl_rx_packet *pkt = rxb_addr(rxb); 131 struct iwl_error_resp *err_resp = (void *)pkt->data; 132 133 IWL_ERR(priv, "Error Reply type 0x%08X cmd REPLY_ERROR (0x%02X) " 134 "seq 0x%04X ser 0x%08X\n", 135 le32_to_cpu(err_resp->error_type), 136 err_resp->cmd_id, 137 le16_to_cpu(err_resp->bad_cmd_seq_num), 138 le32_to_cpu(err_resp->error_info)); 139 return 0; 140} 141 142static int iwlagn_rx_csa(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, 143 struct iwl_device_cmd *cmd) 144{ 145 struct iwl_rx_packet *pkt = rxb_addr(rxb); 146 struct iwl_csa_notification *csa = (void *)pkt->data; 147 /* 148 * MULTI-FIXME 149 * See iwlagn_mac_channel_switch. 150 */ 151 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 152 struct iwl_rxon_cmd *rxon = (void *)&ctx->active; 153 154 if (!test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status)) 155 return 0; 156 157 if (!le32_to_cpu(csa->status) && csa->channel == priv->switch_channel) { 158 rxon->channel = csa->channel; 159 ctx->staging.channel = csa->channel; 160 IWL_DEBUG_11H(priv, "CSA notif: channel %d\n", 161 le16_to_cpu(csa->channel)); 162 iwl_chswitch_done(priv, true); 163 } else { 164 IWL_ERR(priv, "CSA notif (fail) : channel %d\n", 165 le16_to_cpu(csa->channel)); 166 iwl_chswitch_done(priv, false); 167 } 168 return 0; 169} 170 171 172static int iwlagn_rx_spectrum_measure_notif(struct iwl_priv *priv, 173 struct iwl_rx_cmd_buffer *rxb, 174 struct iwl_device_cmd *cmd) 175{ 176 struct iwl_rx_packet *pkt = rxb_addr(rxb); 177 struct iwl_spectrum_notification *report = (void *)pkt->data; 178 179 if (!report->state) { 180 IWL_DEBUG_11H(priv, 181 "Spectrum Measure Notification: Start\n"); 182 return 0; 183 } 184 185 memcpy(&priv->measure_report, report, sizeof(*report)); 186 priv->measurement_status |= MEASUREMENT_READY; 187 return 0; 188} 189 190static int iwlagn_rx_pm_sleep_notif(struct iwl_priv *priv, 191 struct iwl_rx_cmd_buffer *rxb, 192 struct iwl_device_cmd *cmd) 193{ 194#ifdef CONFIG_IWLWIFI_DEBUG 195 struct iwl_rx_packet *pkt = rxb_addr(rxb); 196 struct iwl_sleep_notification *sleep = (void *)pkt->data; 197 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n", 198 sleep->pm_sleep_mode, sleep->pm_wakeup_src); 199#endif 200 return 0; 201} 202 203static int iwlagn_rx_pm_debug_statistics_notif(struct iwl_priv *priv, 204 struct iwl_rx_cmd_buffer *rxb, 205 struct iwl_device_cmd *cmd) 206{ 207 struct iwl_rx_packet *pkt = rxb_addr(rxb); 208 u32 __maybe_unused len = iwl_rx_packet_len(pkt); 209 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled " 210 "notification for PM_DEBUG_STATISTIC_NOTIFIC:\n", len); 211 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->data, len); 212 return 0; 213} 214 215static int iwlagn_rx_beacon_notif(struct iwl_priv *priv, 216 struct iwl_rx_cmd_buffer *rxb, 217 struct iwl_device_cmd *cmd) 218{ 219 struct iwl_rx_packet *pkt = rxb_addr(rxb); 220 struct iwlagn_beacon_notif *beacon = (void *)pkt->data; 221#ifdef CONFIG_IWLWIFI_DEBUG 222 u16 status = le16_to_cpu(beacon->beacon_notify_hdr.status.status); 223 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags); 224 225 IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d " 226 "tsf:0x%.8x%.8x rate:%d\n", 227 status & TX_STATUS_MSK, 228 beacon->beacon_notify_hdr.failure_frame, 229 le32_to_cpu(beacon->ibss_mgr_status), 230 le32_to_cpu(beacon->high_tsf), 231 le32_to_cpu(beacon->low_tsf), rate); 232#endif 233 234 priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status); 235 236 return 0; 237} 238 239/** 240 * iwl_good_plcp_health - checks for plcp error. 241 * 242 * When the plcp error is exceeding the thresholds, reset the radio 243 * to improve the throughput. 244 */ 245static bool iwlagn_good_plcp_health(struct iwl_priv *priv, 246 struct statistics_rx_phy *cur_ofdm, 247 struct statistics_rx_ht_phy *cur_ofdm_ht, 248 unsigned int msecs) 249{ 250 int delta; 251 int threshold = priv->plcp_delta_threshold; 252 253 if (threshold == IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) { 254 IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n"); 255 return true; 256 } 257 258 delta = le32_to_cpu(cur_ofdm->plcp_err) - 259 le32_to_cpu(priv->statistics.rx_ofdm.plcp_err) + 260 le32_to_cpu(cur_ofdm_ht->plcp_err) - 261 le32_to_cpu(priv->statistics.rx_ofdm_ht.plcp_err); 262 263 /* Can be negative if firmware reset statistics */ 264 if (delta <= 0) 265 return true; 266 267 if ((delta * 100 / msecs) > threshold) { 268 IWL_DEBUG_RADIO(priv, 269 "plcp health threshold %u delta %d msecs %u\n", 270 threshold, delta, msecs); 271 return false; 272 } 273 274 return true; 275} 276 277int iwl_force_rf_reset(struct iwl_priv *priv, bool external) 278{ 279 struct iwl_rf_reset *rf_reset; 280 281 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 282 return -EAGAIN; 283 284 if (!iwl_is_any_associated(priv)) { 285 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n"); 286 return -ENOLINK; 287 } 288 289 rf_reset = &priv->rf_reset; 290 rf_reset->reset_request_count++; 291 if (!external && rf_reset->last_reset_jiffies && 292 time_after(rf_reset->last_reset_jiffies + 293 IWL_DELAY_NEXT_FORCE_RF_RESET, jiffies)) { 294 IWL_DEBUG_INFO(priv, "RF reset rejected\n"); 295 rf_reset->reset_reject_count++; 296 return -EAGAIN; 297 } 298 rf_reset->reset_success_count++; 299 rf_reset->last_reset_jiffies = jiffies; 300 301 /* 302 * There is no easy and better way to force reset the radio, 303 * the only known method is switching channel which will force to 304 * reset and tune the radio. 305 * Use internal short scan (single channel) operation to should 306 * achieve this objective. 307 * Driver should reset the radio when number of consecutive missed 308 * beacon, or any other uCode error condition detected. 309 */ 310 IWL_DEBUG_INFO(priv, "perform radio reset.\n"); 311 iwl_internal_short_hw_scan(priv); 312 return 0; 313} 314 315 316static void iwlagn_recover_from_statistics(struct iwl_priv *priv, 317 struct statistics_rx_phy *cur_ofdm, 318 struct statistics_rx_ht_phy *cur_ofdm_ht, 319 struct statistics_tx *tx, 320 unsigned long stamp) 321{ 322 unsigned int msecs; 323 324 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 325 return; 326 327 msecs = jiffies_to_msecs(stamp - priv->rx_statistics_jiffies); 328 329 /* Only gather statistics and update time stamp when not associated */ 330 if (!iwl_is_any_associated(priv)) 331 return; 332 333 /* Do not check/recover when do not have enough statistics data */ 334 if (msecs < 99) 335 return; 336 337 if (!iwlagn_good_plcp_health(priv, cur_ofdm, cur_ofdm_ht, msecs)) 338 iwl_force_rf_reset(priv, false); 339} 340 341/* Calculate noise level, based on measurements during network silence just 342 * before arriving beacon. This measurement can be done only if we know 343 * exactly when to expect beacons, therefore only when we're associated. */ 344static void iwlagn_rx_calc_noise(struct iwl_priv *priv) 345{ 346 struct statistics_rx_non_phy *rx_info; 347 int num_active_rx = 0; 348 int total_silence = 0; 349 int bcn_silence_a, bcn_silence_b, bcn_silence_c; 350 int last_rx_noise; 351 352 rx_info = &priv->statistics.rx_non_phy; 353 354 bcn_silence_a = 355 le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER; 356 bcn_silence_b = 357 le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER; 358 bcn_silence_c = 359 le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER; 360 361 if (bcn_silence_a) { 362 total_silence += bcn_silence_a; 363 num_active_rx++; 364 } 365 if (bcn_silence_b) { 366 total_silence += bcn_silence_b; 367 num_active_rx++; 368 } 369 if (bcn_silence_c) { 370 total_silence += bcn_silence_c; 371 num_active_rx++; 372 } 373 374 /* Average among active antennas */ 375 if (num_active_rx) 376 last_rx_noise = (total_silence / num_active_rx) - 107; 377 else 378 last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE; 379 380 IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n", 381 bcn_silence_a, bcn_silence_b, bcn_silence_c, 382 last_rx_noise); 383} 384 385#ifdef CONFIG_IWLWIFI_DEBUGFS 386/* 387 * based on the assumption of all statistics counter are in DWORD 388 * FIXME: This function is for debugging, do not deal with 389 * the case of counters roll-over. 390 */ 391static void accum_stats(__le32 *prev, __le32 *cur, __le32 *delta, 392 __le32 *max_delta, __le32 *accum, int size) 393{ 394 int i; 395 396 for (i = 0; 397 i < size / sizeof(__le32); 398 i++, prev++, cur++, delta++, max_delta++, accum++) { 399 if (le32_to_cpu(*cur) > le32_to_cpu(*prev)) { 400 *delta = cpu_to_le32( 401 le32_to_cpu(*cur) - le32_to_cpu(*prev)); 402 le32_add_cpu(accum, le32_to_cpu(*delta)); 403 if (le32_to_cpu(*delta) > le32_to_cpu(*max_delta)) 404 *max_delta = *delta; 405 } 406 } 407} 408 409static void 410iwlagn_accumulative_statistics(struct iwl_priv *priv, 411 struct statistics_general_common *common, 412 struct statistics_rx_non_phy *rx_non_phy, 413 struct statistics_rx_phy *rx_ofdm, 414 struct statistics_rx_ht_phy *rx_ofdm_ht, 415 struct statistics_rx_phy *rx_cck, 416 struct statistics_tx *tx, 417 struct statistics_bt_activity *bt_activity) 418{ 419#define ACCUM(_name) \ 420 accum_stats((__le32 *)&priv->statistics._name, \ 421 (__le32 *)_name, \ 422 (__le32 *)&priv->delta_stats._name, \ 423 (__le32 *)&priv->max_delta_stats._name, \ 424 (__le32 *)&priv->accum_stats._name, \ 425 sizeof(*_name)); 426 427 ACCUM(common); 428 ACCUM(rx_non_phy); 429 ACCUM(rx_ofdm); 430 ACCUM(rx_ofdm_ht); 431 ACCUM(rx_cck); 432 ACCUM(tx); 433 if (bt_activity) 434 ACCUM(bt_activity); 435#undef ACCUM 436} 437#else 438static inline void 439iwlagn_accumulative_statistics(struct iwl_priv *priv, 440 struct statistics_general_common *common, 441 struct statistics_rx_non_phy *rx_non_phy, 442 struct statistics_rx_phy *rx_ofdm, 443 struct statistics_rx_ht_phy *rx_ofdm_ht, 444 struct statistics_rx_phy *rx_cck, 445 struct statistics_tx *tx, 446 struct statistics_bt_activity *bt_activity) 447{ 448} 449#endif 450 451static int iwlagn_rx_statistics(struct iwl_priv *priv, 452 struct iwl_rx_cmd_buffer *rxb, 453 struct iwl_device_cmd *cmd) 454{ 455 unsigned long stamp = jiffies; 456 const int reg_recalib_period = 60; 457 int change; 458 struct iwl_rx_packet *pkt = rxb_addr(rxb); 459 u32 len = iwl_rx_packet_payload_len(pkt); 460 __le32 *flag; 461 struct statistics_general_common *common; 462 struct statistics_rx_non_phy *rx_non_phy; 463 struct statistics_rx_phy *rx_ofdm; 464 struct statistics_rx_ht_phy *rx_ofdm_ht; 465 struct statistics_rx_phy *rx_cck; 466 struct statistics_tx *tx; 467 struct statistics_bt_activity *bt_activity; 468 469 IWL_DEBUG_RX(priv, "Statistics notification received (%d bytes).\n", 470 len); 471 472 spin_lock(&priv->statistics.lock); 473 474 if (len == sizeof(struct iwl_bt_notif_statistics)) { 475 struct iwl_bt_notif_statistics *stats; 476 stats = (void *)&pkt->data; 477 flag = &stats->flag; 478 common = &stats->general.common; 479 rx_non_phy = &stats->rx.general.common; 480 rx_ofdm = &stats->rx.ofdm; 481 rx_ofdm_ht = &stats->rx.ofdm_ht; 482 rx_cck = &stats->rx.cck; 483 tx = &stats->tx; 484 bt_activity = &stats->general.activity; 485 486#ifdef CONFIG_IWLWIFI_DEBUGFS 487 /* handle this exception directly */ 488 priv->statistics.num_bt_kills = stats->rx.general.num_bt_kills; 489 le32_add_cpu(&priv->statistics.accum_num_bt_kills, 490 le32_to_cpu(stats->rx.general.num_bt_kills)); 491#endif 492 } else if (len == sizeof(struct iwl_notif_statistics)) { 493 struct iwl_notif_statistics *stats; 494 stats = (void *)&pkt->data; 495 flag = &stats->flag; 496 common = &stats->general.common; 497 rx_non_phy = &stats->rx.general; 498 rx_ofdm = &stats->rx.ofdm; 499 rx_ofdm_ht = &stats->rx.ofdm_ht; 500 rx_cck = &stats->rx.cck; 501 tx = &stats->tx; 502 bt_activity = NULL; 503 } else { 504 WARN_ONCE(1, "len %d doesn't match BT (%zu) or normal (%zu)\n", 505 len, sizeof(struct iwl_bt_notif_statistics), 506 sizeof(struct iwl_notif_statistics)); 507 spin_unlock(&priv->statistics.lock); 508 return 0; 509 } 510 511 change = common->temperature != priv->statistics.common.temperature || 512 (*flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK) != 513 (priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK); 514 515 iwlagn_accumulative_statistics(priv, common, rx_non_phy, rx_ofdm, 516 rx_ofdm_ht, rx_cck, tx, bt_activity); 517 518 iwlagn_recover_from_statistics(priv, rx_ofdm, rx_ofdm_ht, tx, stamp); 519 520 priv->statistics.flag = *flag; 521 memcpy(&priv->statistics.common, common, sizeof(*common)); 522 memcpy(&priv->statistics.rx_non_phy, rx_non_phy, sizeof(*rx_non_phy)); 523 memcpy(&priv->statistics.rx_ofdm, rx_ofdm, sizeof(*rx_ofdm)); 524 memcpy(&priv->statistics.rx_ofdm_ht, rx_ofdm_ht, sizeof(*rx_ofdm_ht)); 525 memcpy(&priv->statistics.rx_cck, rx_cck, sizeof(*rx_cck)); 526 memcpy(&priv->statistics.tx, tx, sizeof(*tx)); 527#ifdef CONFIG_IWLWIFI_DEBUGFS 528 if (bt_activity) 529 memcpy(&priv->statistics.bt_activity, bt_activity, 530 sizeof(*bt_activity)); 531#endif 532 533 priv->rx_statistics_jiffies = stamp; 534 535 set_bit(STATUS_STATISTICS, &priv->status); 536 537 /* Reschedule the statistics timer to occur in 538 * reg_recalib_period seconds to ensure we get a 539 * thermal update even if the uCode doesn't give 540 * us one */ 541 mod_timer(&priv->statistics_periodic, jiffies + 542 msecs_to_jiffies(reg_recalib_period * 1000)); 543 544 if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) && 545 (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) { 546 iwlagn_rx_calc_noise(priv); 547 queue_work(priv->workqueue, &priv->run_time_calib_work); 548 } 549 if (priv->lib->temperature && change) 550 priv->lib->temperature(priv); 551 552 spin_unlock(&priv->statistics.lock); 553 554 return 0; 555} 556 557static int iwlagn_rx_reply_statistics(struct iwl_priv *priv, 558 struct iwl_rx_cmd_buffer *rxb, 559 struct iwl_device_cmd *cmd) 560{ 561 struct iwl_rx_packet *pkt = rxb_addr(rxb); 562 struct iwl_notif_statistics *stats = (void *)pkt->data; 563 564 if (le32_to_cpu(stats->flag) & UCODE_STATISTICS_CLEAR_MSK) { 565#ifdef CONFIG_IWLWIFI_DEBUGFS 566 memset(&priv->accum_stats, 0, 567 sizeof(priv->accum_stats)); 568 memset(&priv->delta_stats, 0, 569 sizeof(priv->delta_stats)); 570 memset(&priv->max_delta_stats, 0, 571 sizeof(priv->max_delta_stats)); 572#endif 573 IWL_DEBUG_RX(priv, "Statistics have been cleared\n"); 574 } 575 iwlagn_rx_statistics(priv, rxb, cmd); 576 return 0; 577} 578 579/* Handle notification from uCode that card's power state is changing 580 * due to software, hardware, or critical temperature RFKILL */ 581static int iwlagn_rx_card_state_notif(struct iwl_priv *priv, 582 struct iwl_rx_cmd_buffer *rxb, 583 struct iwl_device_cmd *cmd) 584{ 585 struct iwl_rx_packet *pkt = rxb_addr(rxb); 586 struct iwl_card_state_notif *card_state_notif = (void *)pkt->data; 587 u32 flags = le32_to_cpu(card_state_notif->flags); 588 unsigned long status = priv->status; 589 590 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n", 591 (flags & HW_CARD_DISABLED) ? "Kill" : "On", 592 (flags & SW_CARD_DISABLED) ? "Kill" : "On", 593 (flags & CT_CARD_DISABLED) ? 594 "Reached" : "Not reached"); 595 596 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED | 597 CT_CARD_DISABLED)) { 598 599 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_SET, 600 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); 601 602 iwl_write_direct32(priv->trans, HBUS_TARG_MBX_C, 603 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); 604 605 if (!(flags & RXON_CARD_DISABLED)) { 606 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, 607 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); 608 iwl_write_direct32(priv->trans, HBUS_TARG_MBX_C, 609 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); 610 } 611 if (flags & CT_CARD_DISABLED) 612 iwl_tt_enter_ct_kill(priv); 613 } 614 if (!(flags & CT_CARD_DISABLED)) 615 iwl_tt_exit_ct_kill(priv); 616 617 if (flags & HW_CARD_DISABLED) 618 set_bit(STATUS_RF_KILL_HW, &priv->status); 619 else 620 clear_bit(STATUS_RF_KILL_HW, &priv->status); 621 622 623 if (!(flags & RXON_CARD_DISABLED)) 624 iwl_scan_cancel(priv); 625 626 if ((test_bit(STATUS_RF_KILL_HW, &status) != 627 test_bit(STATUS_RF_KILL_HW, &priv->status))) 628 wiphy_rfkill_set_hw_state(priv->hw->wiphy, 629 test_bit(STATUS_RF_KILL_HW, &priv->status)); 630 return 0; 631} 632 633static int iwlagn_rx_missed_beacon_notif(struct iwl_priv *priv, 634 struct iwl_rx_cmd_buffer *rxb, 635 struct iwl_device_cmd *cmd) 636 637{ 638 struct iwl_rx_packet *pkt = rxb_addr(rxb); 639 struct iwl_missed_beacon_notif *missed_beacon = (void *)pkt->data; 640 641 if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) > 642 priv->missed_beacon_threshold) { 643 IWL_DEBUG_CALIB(priv, 644 "missed bcn cnsq %d totl %d rcd %d expctd %d\n", 645 le32_to_cpu(missed_beacon->consecutive_missed_beacons), 646 le32_to_cpu(missed_beacon->total_missed_becons), 647 le32_to_cpu(missed_beacon->num_recvd_beacons), 648 le32_to_cpu(missed_beacon->num_expected_beacons)); 649 if (!test_bit(STATUS_SCANNING, &priv->status)) 650 iwl_init_sensitivity(priv); 651 } 652 return 0; 653} 654 655/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD). 656 * This will be used later in iwl_rx_reply_rx() for REPLY_RX_MPDU_CMD. */ 657static int iwlagn_rx_reply_rx_phy(struct iwl_priv *priv, 658 struct iwl_rx_cmd_buffer *rxb, 659 struct iwl_device_cmd *cmd) 660{ 661 struct iwl_rx_packet *pkt = rxb_addr(rxb); 662 663 priv->last_phy_res_valid = true; 664 priv->ampdu_ref++; 665 memcpy(&priv->last_phy_res, pkt->data, 666 sizeof(struct iwl_rx_phy_res)); 667 return 0; 668} 669 670/* 671 * returns non-zero if packet should be dropped 672 */ 673static int iwlagn_set_decrypted_flag(struct iwl_priv *priv, 674 struct ieee80211_hdr *hdr, 675 u32 decrypt_res, 676 struct ieee80211_rx_status *stats) 677{ 678 u16 fc = le16_to_cpu(hdr->frame_control); 679 680 /* 681 * All contexts have the same setting here due to it being 682 * a module parameter, so OK to check any context. 683 */ 684 if (priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags & 685 RXON_FILTER_DIS_DECRYPT_MSK) 686 return 0; 687 688 if (!(fc & IEEE80211_FCTL_PROTECTED)) 689 return 0; 690 691 IWL_DEBUG_RX(priv, "decrypt_res:0x%x\n", decrypt_res); 692 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) { 693 case RX_RES_STATUS_SEC_TYPE_TKIP: 694 /* The uCode has got a bad phase 1 Key, pushes the packet. 695 * Decryption will be done in SW. */ 696 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == 697 RX_RES_STATUS_BAD_KEY_TTAK) 698 break; 699 700 case RX_RES_STATUS_SEC_TYPE_WEP: 701 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == 702 RX_RES_STATUS_BAD_ICV_MIC) { 703 /* bad ICV, the packet is destroyed since the 704 * decryption is inplace, drop it */ 705 IWL_DEBUG_RX(priv, "Packet destroyed\n"); 706 return -1; 707 } 708 case RX_RES_STATUS_SEC_TYPE_CCMP: 709 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == 710 RX_RES_STATUS_DECRYPT_OK) { 711 IWL_DEBUG_RX(priv, "hw decrypt successfully!!!\n"); 712 stats->flag |= RX_FLAG_DECRYPTED; 713 } 714 break; 715 716 default: 717 break; 718 } 719 return 0; 720} 721 722static void iwlagn_pass_packet_to_mac80211(struct iwl_priv *priv, 723 struct ieee80211_hdr *hdr, 724 u16 len, 725 u32 ampdu_status, 726 struct iwl_rx_cmd_buffer *rxb, 727 struct ieee80211_rx_status *stats) 728{ 729 struct sk_buff *skb; 730 __le16 fc = hdr->frame_control; 731 struct iwl_rxon_context *ctx; 732 unsigned int hdrlen, fraglen; 733 734 /* We only process data packets if the interface is open */ 735 if (unlikely(!priv->is_open)) { 736 IWL_DEBUG_DROP_LIMIT(priv, 737 "Dropping packet while interface is not open.\n"); 738 return; 739 } 740 741 /* In case of HW accelerated crypto and bad decryption, drop */ 742 if (!iwlwifi_mod_params.sw_crypto && 743 iwlagn_set_decrypted_flag(priv, hdr, ampdu_status, stats)) 744 return; 745 746 /* Dont use dev_alloc_skb(), we'll have enough headroom once 747 * ieee80211_hdr pulled. 748 */ 749 skb = alloc_skb(128, GFP_ATOMIC); 750 if (!skb) { 751 IWL_ERR(priv, "alloc_skb failed\n"); 752 return; 753 } 754 /* If frame is small enough to fit in skb->head, pull it completely. 755 * If not, only pull ieee80211_hdr so that splice() or TCP coalesce 756 * are more efficient. 757 */ 758 hdrlen = (len <= skb_tailroom(skb)) ? len : sizeof(*hdr); 759 760 memcpy(skb_put(skb, hdrlen), hdr, hdrlen); 761 fraglen = len - hdrlen; 762 763 if (fraglen) { 764 int offset = (void *)hdr + hdrlen - 765 rxb_addr(rxb) + rxb_offset(rxb); 766 767 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, 768 fraglen, rxb->truesize); 769 } 770 771 /* 772 * Wake any queues that were stopped due to a passive channel tx 773 * failure. This can happen because the regulatory enforcement in 774 * the device waits for a beacon before allowing transmission, 775 * sometimes even after already having transmitted frames for the 776 * association because the new RXON may reset the information. 777 */ 778 if (unlikely(ieee80211_is_beacon(fc) && priv->passive_no_rx)) { 779 for_each_context(priv, ctx) { 780 if (!ether_addr_equal(hdr->addr3, 781 ctx->active.bssid_addr)) 782 continue; 783 iwlagn_lift_passive_no_rx(priv); 784 } 785 } 786 787 memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats)); 788 789 ieee80211_rx(priv->hw, skb); 790} 791 792static u32 iwlagn_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in) 793{ 794 u32 decrypt_out = 0; 795 796 if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) == 797 RX_RES_STATUS_STATION_FOUND) 798 decrypt_out |= (RX_RES_STATUS_STATION_FOUND | 799 RX_RES_STATUS_NO_STATION_INFO_MISMATCH); 800 801 decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK); 802 803 /* packet was not encrypted */ 804 if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == 805 RX_RES_STATUS_SEC_TYPE_NONE) 806 return decrypt_out; 807 808 /* packet was encrypted with unknown alg */ 809 if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == 810 RX_RES_STATUS_SEC_TYPE_ERR) 811 return decrypt_out; 812 813 /* decryption was not done in HW */ 814 if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) != 815 RX_MPDU_RES_STATUS_DEC_DONE_MSK) 816 return decrypt_out; 817 818 switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) { 819 820 case RX_RES_STATUS_SEC_TYPE_CCMP: 821 /* alg is CCM: check MIC only */ 822 if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK)) 823 /* Bad MIC */ 824 decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; 825 else 826 decrypt_out |= RX_RES_STATUS_DECRYPT_OK; 827 828 break; 829 830 case RX_RES_STATUS_SEC_TYPE_TKIP: 831 if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) { 832 /* Bad TTAK */ 833 decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK; 834 break; 835 } 836 /* fall through if TTAK OK */ 837 default: 838 if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK)) 839 decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; 840 else 841 decrypt_out |= RX_RES_STATUS_DECRYPT_OK; 842 break; 843 } 844 845 IWL_DEBUG_RX(priv, "decrypt_in:0x%x decrypt_out = 0x%x\n", 846 decrypt_in, decrypt_out); 847 848 return decrypt_out; 849} 850 851/* Calc max signal level (dBm) among 3 possible receivers */ 852static int iwlagn_calc_rssi(struct iwl_priv *priv, 853 struct iwl_rx_phy_res *rx_resp) 854{ 855 /* data from PHY/DSP regarding signal strength, etc., 856 * contents are always there, not configurable by host 857 */ 858 struct iwlagn_non_cfg_phy *ncphy = 859 (struct iwlagn_non_cfg_phy *)rx_resp->non_cfg_phy_buf; 860 u32 val, rssi_a, rssi_b, rssi_c, max_rssi; 861 u8 agc; 862 863 val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_AGC_IDX]); 864 agc = (val & IWLAGN_OFDM_AGC_MSK) >> IWLAGN_OFDM_AGC_BIT_POS; 865 866 /* Find max rssi among 3 possible receivers. 867 * These values are measured by the digital signal processor (DSP). 868 * They should stay fairly constant even as the signal strength varies, 869 * if the radio's automatic gain control (AGC) is working right. 870 * AGC value (see below) will provide the "interesting" info. 871 */ 872 val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_AB_IDX]); 873 rssi_a = (val & IWLAGN_OFDM_RSSI_INBAND_A_BITMSK) >> 874 IWLAGN_OFDM_RSSI_A_BIT_POS; 875 rssi_b = (val & IWLAGN_OFDM_RSSI_INBAND_B_BITMSK) >> 876 IWLAGN_OFDM_RSSI_B_BIT_POS; 877 val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_C_IDX]); 878 rssi_c = (val & IWLAGN_OFDM_RSSI_INBAND_C_BITMSK) >> 879 IWLAGN_OFDM_RSSI_C_BIT_POS; 880 881 max_rssi = max_t(u32, rssi_a, rssi_b); 882 max_rssi = max_t(u32, max_rssi, rssi_c); 883 884 IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n", 885 rssi_a, rssi_b, rssi_c, max_rssi, agc); 886 887 /* dBm = max_rssi dB - agc dB - constant. 888 * Higher AGC (higher radio gain) means lower signal. */ 889 return max_rssi - agc - IWLAGN_RSSI_OFFSET; 890} 891 892/* Called for REPLY_RX_MPDU_CMD */ 893static int iwlagn_rx_reply_rx(struct iwl_priv *priv, 894 struct iwl_rx_cmd_buffer *rxb, 895 struct iwl_device_cmd *cmd) 896{ 897 struct ieee80211_hdr *header; 898 struct ieee80211_rx_status rx_status = {}; 899 struct iwl_rx_packet *pkt = rxb_addr(rxb); 900 struct iwl_rx_phy_res *phy_res; 901 __le32 rx_pkt_status; 902 struct iwl_rx_mpdu_res_start *amsdu; 903 u32 len; 904 u32 ampdu_status; 905 u32 rate_n_flags; 906 907 if (!priv->last_phy_res_valid) { 908 IWL_ERR(priv, "MPDU frame without cached PHY data\n"); 909 return 0; 910 } 911 phy_res = &priv->last_phy_res; 912 amsdu = (struct iwl_rx_mpdu_res_start *)pkt->data; 913 header = (struct ieee80211_hdr *)(pkt->data + sizeof(*amsdu)); 914 len = le16_to_cpu(amsdu->byte_count); 915 rx_pkt_status = *(__le32 *)(pkt->data + sizeof(*amsdu) + len); 916 ampdu_status = iwlagn_translate_rx_status(priv, 917 le32_to_cpu(rx_pkt_status)); 918 919 if ((unlikely(phy_res->cfg_phy_cnt > 20))) { 920 IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d\n", 921 phy_res->cfg_phy_cnt); 922 return 0; 923 } 924 925 if (!(rx_pkt_status & RX_RES_STATUS_NO_CRC32_ERROR) || 926 !(rx_pkt_status & RX_RES_STATUS_NO_RXE_OVERFLOW)) { 927 IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", 928 le32_to_cpu(rx_pkt_status)); 929 return 0; 930 } 931 932 /* This will be used in several places later */ 933 rate_n_flags = le32_to_cpu(phy_res->rate_n_flags); 934 935 /* rx_status carries information about the packet to mac80211 */ 936 rx_status.mactime = le64_to_cpu(phy_res->timestamp); 937 rx_status.band = (phy_res->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? 938 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; 939 rx_status.freq = 940 ieee80211_channel_to_frequency(le16_to_cpu(phy_res->channel), 941 rx_status.band); 942 rx_status.rate_idx = 943 iwlagn_hwrate_to_mac80211_idx(rate_n_flags, rx_status.band); 944 rx_status.flag = 0; 945 946 /* TSF isn't reliable. In order to allow smooth user experience, 947 * this W/A doesn't propagate it to the mac80211 */ 948 /*rx_status.flag |= RX_FLAG_MACTIME_START;*/ 949 950 priv->ucode_beacon_time = le32_to_cpu(phy_res->beacon_time_stamp); 951 952 /* Find max signal strength (dBm) among 3 antenna/receiver chains */ 953 rx_status.signal = iwlagn_calc_rssi(priv, phy_res); 954 955 IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, TSF %llu\n", 956 rx_status.signal, (unsigned long long)rx_status.mactime); 957 958 /* 959 * "antenna number" 960 * 961 * It seems that the antenna field in the phy flags value 962 * is actually a bit field. This is undefined by radiotap, 963 * it wants an actual antenna number but I always get "7" 964 * for most legacy frames I receive indicating that the 965 * same frame was received on all three RX chains. 966 * 967 * I think this field should be removed in favor of a 968 * new 802.11n radiotap field "RX chains" that is defined 969 * as a bitmask. 970 */ 971 rx_status.antenna = 972 (le16_to_cpu(phy_res->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA_MSK) 973 >> RX_RES_PHY_FLAGS_ANTENNA_POS; 974 975 /* set the preamble flag if appropriate */ 976 if (phy_res->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) 977 rx_status.flag |= RX_FLAG_SHORTPRE; 978 979 if (phy_res->phy_flags & RX_RES_PHY_FLAGS_AGG_MSK) { 980 /* 981 * We know which subframes of an A-MPDU belong 982 * together since we get a single PHY response 983 * from the firmware for all of them 984 */ 985 rx_status.flag |= RX_FLAG_AMPDU_DETAILS; 986 rx_status.ampdu_reference = priv->ampdu_ref; 987 } 988 989 /* Set up the HT phy flags */ 990 if (rate_n_flags & RATE_MCS_HT_MSK) 991 rx_status.flag |= RX_FLAG_HT; 992 if (rate_n_flags & RATE_MCS_HT40_MSK) 993 rx_status.flag |= RX_FLAG_40MHZ; 994 if (rate_n_flags & RATE_MCS_SGI_MSK) 995 rx_status.flag |= RX_FLAG_SHORT_GI; 996 if (rate_n_flags & RATE_MCS_GF_MSK) 997 rx_status.flag |= RX_FLAG_HT_GF; 998 999 iwlagn_pass_packet_to_mac80211(priv, header, len, ampdu_status, 1000 rxb, &rx_status); 1001 return 0; 1002} 1003 1004static int iwlagn_rx_noa_notification(struct iwl_priv *priv, 1005 struct iwl_rx_cmd_buffer *rxb, 1006 struct iwl_device_cmd *cmd) 1007{ 1008 struct iwl_wipan_noa_data *new_data, *old_data; 1009 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1010 struct iwl_wipan_noa_notification *noa_notif = (void *)pkt->data; 1011 1012 /* no condition -- we're in softirq */ 1013 old_data = rcu_dereference_protected(priv->noa_data, true); 1014 1015 if (noa_notif->noa_active) { 1016 u32 len = le16_to_cpu(noa_notif->noa_attribute.length); 1017 u32 copylen = len; 1018 1019 /* EID, len, OUI, subtype */ 1020 len += 1 + 1 + 3 + 1; 1021 /* P2P id, P2P length */ 1022 len += 1 + 2; 1023 copylen += 1 + 2; 1024 1025 new_data = kmalloc(sizeof(*new_data) + len, GFP_ATOMIC); 1026 if (new_data) { 1027 new_data->length = len; 1028 new_data->data[0] = WLAN_EID_VENDOR_SPECIFIC; 1029 new_data->data[1] = len - 2; /* not counting EID, len */ 1030 new_data->data[2] = (WLAN_OUI_WFA >> 16) & 0xff; 1031 new_data->data[3] = (WLAN_OUI_WFA >> 8) & 0xff; 1032 new_data->data[4] = (WLAN_OUI_WFA >> 0) & 0xff; 1033 new_data->data[5] = WLAN_OUI_TYPE_WFA_P2P; 1034 memcpy(&new_data->data[6], &noa_notif->noa_attribute, 1035 copylen); 1036 } 1037 } else 1038 new_data = NULL; 1039 1040 rcu_assign_pointer(priv->noa_data, new_data); 1041 1042 if (old_data) 1043 kfree_rcu(old_data, rcu_head); 1044 1045 return 0; 1046} 1047 1048/** 1049 * iwl_setup_rx_handlers - Initialize Rx handler callbacks 1050 * 1051 * Setup the RX handlers for each of the reply types sent from the uCode 1052 * to the host. 1053 */ 1054void iwl_setup_rx_handlers(struct iwl_priv *priv) 1055{ 1056 int (**handlers)(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, 1057 struct iwl_device_cmd *cmd); 1058 1059 handlers = priv->rx_handlers; 1060 1061 handlers[REPLY_ERROR] = iwlagn_rx_reply_error; 1062 handlers[CHANNEL_SWITCH_NOTIFICATION] = iwlagn_rx_csa; 1063 handlers[SPECTRUM_MEASURE_NOTIFICATION] = 1064 iwlagn_rx_spectrum_measure_notif; 1065 handlers[PM_SLEEP_NOTIFICATION] = iwlagn_rx_pm_sleep_notif; 1066 handlers[PM_DEBUG_STATISTIC_NOTIFIC] = 1067 iwlagn_rx_pm_debug_statistics_notif; 1068 handlers[BEACON_NOTIFICATION] = iwlagn_rx_beacon_notif; 1069 handlers[REPLY_ADD_STA] = iwl_add_sta_callback; 1070 1071 handlers[REPLY_WIPAN_NOA_NOTIFICATION] = iwlagn_rx_noa_notification; 1072 1073 /* 1074 * The same handler is used for both the REPLY to a discrete 1075 * statistics request from the host as well as for the periodic 1076 * statistics notifications (after received beacons) from the uCode. 1077 */ 1078 handlers[REPLY_STATISTICS_CMD] = iwlagn_rx_reply_statistics; 1079 handlers[STATISTICS_NOTIFICATION] = iwlagn_rx_statistics; 1080 1081 iwl_setup_rx_scan_handlers(priv); 1082 1083 handlers[CARD_STATE_NOTIFICATION] = iwlagn_rx_card_state_notif; 1084 handlers[MISSED_BEACONS_NOTIFICATION] = 1085 iwlagn_rx_missed_beacon_notif; 1086 1087 /* Rx handlers */ 1088 handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy; 1089 handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx; 1090 1091 /* block ack */ 1092 handlers[REPLY_COMPRESSED_BA] = 1093 iwlagn_rx_reply_compressed_ba; 1094 1095 priv->rx_handlers[REPLY_TX] = iwlagn_rx_reply_tx; 1096 1097 /* set up notification wait support */ 1098 iwl_notification_wait_init(&priv->notif_wait); 1099 1100 /* Set up BT Rx handlers */ 1101 if (priv->lib->bt_params) 1102 iwlagn_bt_rx_handler_setup(priv); 1103} 1104 1105int iwl_rx_dispatch(struct iwl_op_mode *op_mode, struct iwl_rx_cmd_buffer *rxb, 1106 struct iwl_device_cmd *cmd) 1107{ 1108 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1109 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1110 int err = 0; 1111 1112 /* 1113 * Do the notification wait before RX handlers so 1114 * even if the RX handler consumes the RXB we have 1115 * access to it in the notification wait entry. 1116 */ 1117 iwl_notification_wait_notify(&priv->notif_wait, pkt); 1118 1119 /* Based on type of command response or notification, 1120 * handle those that need handling via function in 1121 * rx_handlers table. See iwl_setup_rx_handlers() */ 1122 if (priv->rx_handlers[pkt->hdr.cmd]) { 1123 priv->rx_handlers_stats[pkt->hdr.cmd]++; 1124 err = priv->rx_handlers[pkt->hdr.cmd] (priv, rxb, cmd); 1125 } else { 1126 /* No handling needed */ 1127 IWL_DEBUG_RX(priv, "No handler needed for %s, 0x%02x\n", 1128 iwl_dvm_get_cmd_string(pkt->hdr.cmd), 1129 pkt->hdr.cmd); 1130 } 1131 return err; 1132} 1133