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 + 1] = { 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 void iwlagn_rx_reply_error(struct iwl_priv *priv, 127 struct iwl_rx_cmd_buffer *rxb) 128{ 129 struct iwl_rx_packet *pkt = rxb_addr(rxb); 130 struct iwl_error_resp *err_resp = (void *)pkt->data; 131 132 IWL_ERR(priv, "Error Reply type 0x%08X cmd REPLY_ERROR (0x%02X) " 133 "seq 0x%04X ser 0x%08X\n", 134 le32_to_cpu(err_resp->error_type), 135 err_resp->cmd_id, 136 le16_to_cpu(err_resp->bad_cmd_seq_num), 137 le32_to_cpu(err_resp->error_info)); 138} 139 140static void iwlagn_rx_csa(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb) 141{ 142 struct iwl_rx_packet *pkt = rxb_addr(rxb); 143 struct iwl_csa_notification *csa = (void *)pkt->data; 144 /* 145 * MULTI-FIXME 146 * See iwlagn_mac_channel_switch. 147 */ 148 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; 149 struct iwl_rxon_cmd *rxon = (void *)&ctx->active; 150 151 if (!test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status)) 152 return; 153 154 if (!le32_to_cpu(csa->status) && csa->channel == priv->switch_channel) { 155 rxon->channel = csa->channel; 156 ctx->staging.channel = csa->channel; 157 IWL_DEBUG_11H(priv, "CSA notif: channel %d\n", 158 le16_to_cpu(csa->channel)); 159 iwl_chswitch_done(priv, true); 160 } else { 161 IWL_ERR(priv, "CSA notif (fail) : channel %d\n", 162 le16_to_cpu(csa->channel)); 163 iwl_chswitch_done(priv, false); 164 } 165} 166 167 168static void iwlagn_rx_spectrum_measure_notif(struct iwl_priv *priv, 169 struct iwl_rx_cmd_buffer *rxb) 170{ 171 struct iwl_rx_packet *pkt = rxb_addr(rxb); 172 struct iwl_spectrum_notification *report = (void *)pkt->data; 173 174 if (!report->state) { 175 IWL_DEBUG_11H(priv, 176 "Spectrum Measure Notification: Start\n"); 177 return; 178 } 179 180 memcpy(&priv->measure_report, report, sizeof(*report)); 181 priv->measurement_status |= MEASUREMENT_READY; 182} 183 184static void iwlagn_rx_pm_sleep_notif(struct iwl_priv *priv, 185 struct iwl_rx_cmd_buffer *rxb) 186{ 187#ifdef CONFIG_IWLWIFI_DEBUG 188 struct iwl_rx_packet *pkt = rxb_addr(rxb); 189 struct iwl_sleep_notification *sleep = (void *)pkt->data; 190 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n", 191 sleep->pm_sleep_mode, sleep->pm_wakeup_src); 192#endif 193} 194 195static void iwlagn_rx_pm_debug_statistics_notif(struct iwl_priv *priv, 196 struct iwl_rx_cmd_buffer *rxb) 197{ 198 struct iwl_rx_packet *pkt = rxb_addr(rxb); 199 u32 __maybe_unused len = iwl_rx_packet_len(pkt); 200 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled " 201 "notification for PM_DEBUG_STATISTIC_NOTIFIC:\n", len); 202 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->data, len); 203} 204 205static void iwlagn_rx_beacon_notif(struct iwl_priv *priv, 206 struct iwl_rx_cmd_buffer *rxb) 207{ 208 struct iwl_rx_packet *pkt = rxb_addr(rxb); 209 struct iwlagn_beacon_notif *beacon = (void *)pkt->data; 210#ifdef CONFIG_IWLWIFI_DEBUG 211 u16 status = le16_to_cpu(beacon->beacon_notify_hdr.status.status); 212 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags); 213 214 IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d " 215 "tsf:0x%.8x%.8x rate:%d\n", 216 status & TX_STATUS_MSK, 217 beacon->beacon_notify_hdr.failure_frame, 218 le32_to_cpu(beacon->ibss_mgr_status), 219 le32_to_cpu(beacon->high_tsf), 220 le32_to_cpu(beacon->low_tsf), rate); 221#endif 222 223 priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status); 224} 225 226/** 227 * iwl_good_plcp_health - checks for plcp error. 228 * 229 * When the plcp error is exceeding the thresholds, reset the radio 230 * to improve the throughput. 231 */ 232static bool iwlagn_good_plcp_health(struct iwl_priv *priv, 233 struct statistics_rx_phy *cur_ofdm, 234 struct statistics_rx_ht_phy *cur_ofdm_ht, 235 unsigned int msecs) 236{ 237 int delta; 238 int threshold = priv->plcp_delta_threshold; 239 240 if (threshold == IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) { 241 IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n"); 242 return true; 243 } 244 245 delta = le32_to_cpu(cur_ofdm->plcp_err) - 246 le32_to_cpu(priv->statistics.rx_ofdm.plcp_err) + 247 le32_to_cpu(cur_ofdm_ht->plcp_err) - 248 le32_to_cpu(priv->statistics.rx_ofdm_ht.plcp_err); 249 250 /* Can be negative if firmware reset statistics */ 251 if (delta <= 0) 252 return true; 253 254 if ((delta * 100 / msecs) > threshold) { 255 IWL_DEBUG_RADIO(priv, 256 "plcp health threshold %u delta %d msecs %u\n", 257 threshold, delta, msecs); 258 return false; 259 } 260 261 return true; 262} 263 264int iwl_force_rf_reset(struct iwl_priv *priv, bool external) 265{ 266 struct iwl_rf_reset *rf_reset; 267 268 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 269 return -EAGAIN; 270 271 if (!iwl_is_any_associated(priv)) { 272 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n"); 273 return -ENOLINK; 274 } 275 276 rf_reset = &priv->rf_reset; 277 rf_reset->reset_request_count++; 278 if (!external && rf_reset->last_reset_jiffies && 279 time_after(rf_reset->last_reset_jiffies + 280 IWL_DELAY_NEXT_FORCE_RF_RESET, jiffies)) { 281 IWL_DEBUG_INFO(priv, "RF reset rejected\n"); 282 rf_reset->reset_reject_count++; 283 return -EAGAIN; 284 } 285 rf_reset->reset_success_count++; 286 rf_reset->last_reset_jiffies = jiffies; 287 288 /* 289 * There is no easy and better way to force reset the radio, 290 * the only known method is switching channel which will force to 291 * reset and tune the radio. 292 * Use internal short scan (single channel) operation to should 293 * achieve this objective. 294 * Driver should reset the radio when number of consecutive missed 295 * beacon, or any other uCode error condition detected. 296 */ 297 IWL_DEBUG_INFO(priv, "perform radio reset.\n"); 298 iwl_internal_short_hw_scan(priv); 299 return 0; 300} 301 302 303static void iwlagn_recover_from_statistics(struct iwl_priv *priv, 304 struct statistics_rx_phy *cur_ofdm, 305 struct statistics_rx_ht_phy *cur_ofdm_ht, 306 struct statistics_tx *tx, 307 unsigned long stamp) 308{ 309 unsigned int msecs; 310 311 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) 312 return; 313 314 msecs = jiffies_to_msecs(stamp - priv->rx_statistics_jiffies); 315 316 /* Only gather statistics and update time stamp when not associated */ 317 if (!iwl_is_any_associated(priv)) 318 return; 319 320 /* Do not check/recover when do not have enough statistics data */ 321 if (msecs < 99) 322 return; 323 324 if (!iwlagn_good_plcp_health(priv, cur_ofdm, cur_ofdm_ht, msecs)) 325 iwl_force_rf_reset(priv, false); 326} 327 328/* Calculate noise level, based on measurements during network silence just 329 * before arriving beacon. This measurement can be done only if we know 330 * exactly when to expect beacons, therefore only when we're associated. */ 331static void iwlagn_rx_calc_noise(struct iwl_priv *priv) 332{ 333 struct statistics_rx_non_phy *rx_info; 334 int num_active_rx = 0; 335 int total_silence = 0; 336 int bcn_silence_a, bcn_silence_b, bcn_silence_c; 337 int last_rx_noise; 338 339 rx_info = &priv->statistics.rx_non_phy; 340 341 bcn_silence_a = 342 le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER; 343 bcn_silence_b = 344 le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER; 345 bcn_silence_c = 346 le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER; 347 348 if (bcn_silence_a) { 349 total_silence += bcn_silence_a; 350 num_active_rx++; 351 } 352 if (bcn_silence_b) { 353 total_silence += bcn_silence_b; 354 num_active_rx++; 355 } 356 if (bcn_silence_c) { 357 total_silence += bcn_silence_c; 358 num_active_rx++; 359 } 360 361 /* Average among active antennas */ 362 if (num_active_rx) 363 last_rx_noise = (total_silence / num_active_rx) - 107; 364 else 365 last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE; 366 367 IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n", 368 bcn_silence_a, bcn_silence_b, bcn_silence_c, 369 last_rx_noise); 370} 371 372#ifdef CONFIG_IWLWIFI_DEBUGFS 373/* 374 * based on the assumption of all statistics counter are in DWORD 375 * FIXME: This function is for debugging, do not deal with 376 * the case of counters roll-over. 377 */ 378static void accum_stats(__le32 *prev, __le32 *cur, __le32 *delta, 379 __le32 *max_delta, __le32 *accum, int size) 380{ 381 int i; 382 383 for (i = 0; 384 i < size / sizeof(__le32); 385 i++, prev++, cur++, delta++, max_delta++, accum++) { 386 if (le32_to_cpu(*cur) > le32_to_cpu(*prev)) { 387 *delta = cpu_to_le32( 388 le32_to_cpu(*cur) - le32_to_cpu(*prev)); 389 le32_add_cpu(accum, le32_to_cpu(*delta)); 390 if (le32_to_cpu(*delta) > le32_to_cpu(*max_delta)) 391 *max_delta = *delta; 392 } 393 } 394} 395 396static void 397iwlagn_accumulative_statistics(struct iwl_priv *priv, 398 struct statistics_general_common *common, 399 struct statistics_rx_non_phy *rx_non_phy, 400 struct statistics_rx_phy *rx_ofdm, 401 struct statistics_rx_ht_phy *rx_ofdm_ht, 402 struct statistics_rx_phy *rx_cck, 403 struct statistics_tx *tx, 404 struct statistics_bt_activity *bt_activity) 405{ 406#define ACCUM(_name) \ 407 accum_stats((__le32 *)&priv->statistics._name, \ 408 (__le32 *)_name, \ 409 (__le32 *)&priv->delta_stats._name, \ 410 (__le32 *)&priv->max_delta_stats._name, \ 411 (__le32 *)&priv->accum_stats._name, \ 412 sizeof(*_name)); 413 414 ACCUM(common); 415 ACCUM(rx_non_phy); 416 ACCUM(rx_ofdm); 417 ACCUM(rx_ofdm_ht); 418 ACCUM(rx_cck); 419 ACCUM(tx); 420 if (bt_activity) 421 ACCUM(bt_activity); 422#undef ACCUM 423} 424#else 425static inline void 426iwlagn_accumulative_statistics(struct iwl_priv *priv, 427 struct statistics_general_common *common, 428 struct statistics_rx_non_phy *rx_non_phy, 429 struct statistics_rx_phy *rx_ofdm, 430 struct statistics_rx_ht_phy *rx_ofdm_ht, 431 struct statistics_rx_phy *rx_cck, 432 struct statistics_tx *tx, 433 struct statistics_bt_activity *bt_activity) 434{ 435} 436#endif 437 438static void iwlagn_rx_statistics(struct iwl_priv *priv, 439 struct iwl_rx_cmd_buffer *rxb) 440{ 441 unsigned long stamp = jiffies; 442 const int reg_recalib_period = 60; 443 int change; 444 struct iwl_rx_packet *pkt = rxb_addr(rxb); 445 u32 len = iwl_rx_packet_payload_len(pkt); 446 __le32 *flag; 447 struct statistics_general_common *common; 448 struct statistics_rx_non_phy *rx_non_phy; 449 struct statistics_rx_phy *rx_ofdm; 450 struct statistics_rx_ht_phy *rx_ofdm_ht; 451 struct statistics_rx_phy *rx_cck; 452 struct statistics_tx *tx; 453 struct statistics_bt_activity *bt_activity; 454 455 IWL_DEBUG_RX(priv, "Statistics notification received (%d bytes).\n", 456 len); 457 458 spin_lock(&priv->statistics.lock); 459 460 if (len == sizeof(struct iwl_bt_notif_statistics)) { 461 struct iwl_bt_notif_statistics *stats; 462 stats = (void *)&pkt->data; 463 flag = &stats->flag; 464 common = &stats->general.common; 465 rx_non_phy = &stats->rx.general.common; 466 rx_ofdm = &stats->rx.ofdm; 467 rx_ofdm_ht = &stats->rx.ofdm_ht; 468 rx_cck = &stats->rx.cck; 469 tx = &stats->tx; 470 bt_activity = &stats->general.activity; 471 472#ifdef CONFIG_IWLWIFI_DEBUGFS 473 /* handle this exception directly */ 474 priv->statistics.num_bt_kills = stats->rx.general.num_bt_kills; 475 le32_add_cpu(&priv->statistics.accum_num_bt_kills, 476 le32_to_cpu(stats->rx.general.num_bt_kills)); 477#endif 478 } else if (len == sizeof(struct iwl_notif_statistics)) { 479 struct iwl_notif_statistics *stats; 480 stats = (void *)&pkt->data; 481 flag = &stats->flag; 482 common = &stats->general.common; 483 rx_non_phy = &stats->rx.general; 484 rx_ofdm = &stats->rx.ofdm; 485 rx_ofdm_ht = &stats->rx.ofdm_ht; 486 rx_cck = &stats->rx.cck; 487 tx = &stats->tx; 488 bt_activity = NULL; 489 } else { 490 WARN_ONCE(1, "len %d doesn't match BT (%zu) or normal (%zu)\n", 491 len, sizeof(struct iwl_bt_notif_statistics), 492 sizeof(struct iwl_notif_statistics)); 493 spin_unlock(&priv->statistics.lock); 494 return; 495 } 496 497 change = common->temperature != priv->statistics.common.temperature || 498 (*flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK) != 499 (priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK); 500 501 iwlagn_accumulative_statistics(priv, common, rx_non_phy, rx_ofdm, 502 rx_ofdm_ht, rx_cck, tx, bt_activity); 503 504 iwlagn_recover_from_statistics(priv, rx_ofdm, rx_ofdm_ht, tx, stamp); 505 506 priv->statistics.flag = *flag; 507 memcpy(&priv->statistics.common, common, sizeof(*common)); 508 memcpy(&priv->statistics.rx_non_phy, rx_non_phy, sizeof(*rx_non_phy)); 509 memcpy(&priv->statistics.rx_ofdm, rx_ofdm, sizeof(*rx_ofdm)); 510 memcpy(&priv->statistics.rx_ofdm_ht, rx_ofdm_ht, sizeof(*rx_ofdm_ht)); 511 memcpy(&priv->statistics.rx_cck, rx_cck, sizeof(*rx_cck)); 512 memcpy(&priv->statistics.tx, tx, sizeof(*tx)); 513#ifdef CONFIG_IWLWIFI_DEBUGFS 514 if (bt_activity) 515 memcpy(&priv->statistics.bt_activity, bt_activity, 516 sizeof(*bt_activity)); 517#endif 518 519 priv->rx_statistics_jiffies = stamp; 520 521 set_bit(STATUS_STATISTICS, &priv->status); 522 523 /* Reschedule the statistics timer to occur in 524 * reg_recalib_period seconds to ensure we get a 525 * thermal update even if the uCode doesn't give 526 * us one */ 527 mod_timer(&priv->statistics_periodic, jiffies + 528 msecs_to_jiffies(reg_recalib_period * 1000)); 529 530 if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) && 531 (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) { 532 iwlagn_rx_calc_noise(priv); 533 queue_work(priv->workqueue, &priv->run_time_calib_work); 534 } 535 if (priv->lib->temperature && change) 536 priv->lib->temperature(priv); 537 538 spin_unlock(&priv->statistics.lock); 539} 540 541static void iwlagn_rx_reply_statistics(struct iwl_priv *priv, 542 struct iwl_rx_cmd_buffer *rxb) 543{ 544 struct iwl_rx_packet *pkt = rxb_addr(rxb); 545 struct iwl_notif_statistics *stats = (void *)pkt->data; 546 547 if (le32_to_cpu(stats->flag) & UCODE_STATISTICS_CLEAR_MSK) { 548#ifdef CONFIG_IWLWIFI_DEBUGFS 549 memset(&priv->accum_stats, 0, 550 sizeof(priv->accum_stats)); 551 memset(&priv->delta_stats, 0, 552 sizeof(priv->delta_stats)); 553 memset(&priv->max_delta_stats, 0, 554 sizeof(priv->max_delta_stats)); 555#endif 556 IWL_DEBUG_RX(priv, "Statistics have been cleared\n"); 557 } 558 559 iwlagn_rx_statistics(priv, rxb); 560} 561 562/* Handle notification from uCode that card's power state is changing 563 * due to software, hardware, or critical temperature RFKILL */ 564static void iwlagn_rx_card_state_notif(struct iwl_priv *priv, 565 struct iwl_rx_cmd_buffer *rxb) 566{ 567 struct iwl_rx_packet *pkt = rxb_addr(rxb); 568 struct iwl_card_state_notif *card_state_notif = (void *)pkt->data; 569 u32 flags = le32_to_cpu(card_state_notif->flags); 570 unsigned long status = priv->status; 571 572 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n", 573 (flags & HW_CARD_DISABLED) ? "Kill" : "On", 574 (flags & SW_CARD_DISABLED) ? "Kill" : "On", 575 (flags & CT_CARD_DISABLED) ? 576 "Reached" : "Not reached"); 577 578 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED | 579 CT_CARD_DISABLED)) { 580 581 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_SET, 582 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); 583 584 iwl_write_direct32(priv->trans, HBUS_TARG_MBX_C, 585 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); 586 587 if (!(flags & RXON_CARD_DISABLED)) { 588 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, 589 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED); 590 iwl_write_direct32(priv->trans, HBUS_TARG_MBX_C, 591 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED); 592 } 593 if (flags & CT_CARD_DISABLED) 594 iwl_tt_enter_ct_kill(priv); 595 } 596 if (!(flags & CT_CARD_DISABLED)) 597 iwl_tt_exit_ct_kill(priv); 598 599 if (flags & HW_CARD_DISABLED) 600 set_bit(STATUS_RF_KILL_HW, &priv->status); 601 else 602 clear_bit(STATUS_RF_KILL_HW, &priv->status); 603 604 605 if (!(flags & RXON_CARD_DISABLED)) 606 iwl_scan_cancel(priv); 607 608 if ((test_bit(STATUS_RF_KILL_HW, &status) != 609 test_bit(STATUS_RF_KILL_HW, &priv->status))) 610 wiphy_rfkill_set_hw_state(priv->hw->wiphy, 611 test_bit(STATUS_RF_KILL_HW, &priv->status)); 612} 613 614static void iwlagn_rx_missed_beacon_notif(struct iwl_priv *priv, 615 struct iwl_rx_cmd_buffer *rxb) 616 617{ 618 struct iwl_rx_packet *pkt = rxb_addr(rxb); 619 struct iwl_missed_beacon_notif *missed_beacon = (void *)pkt->data; 620 621 if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) > 622 priv->missed_beacon_threshold) { 623 IWL_DEBUG_CALIB(priv, 624 "missed bcn cnsq %d totl %d rcd %d expctd %d\n", 625 le32_to_cpu(missed_beacon->consecutive_missed_beacons), 626 le32_to_cpu(missed_beacon->total_missed_becons), 627 le32_to_cpu(missed_beacon->num_recvd_beacons), 628 le32_to_cpu(missed_beacon->num_expected_beacons)); 629 if (!test_bit(STATUS_SCANNING, &priv->status)) 630 iwl_init_sensitivity(priv); 631 } 632} 633 634/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD). 635 * This will be used later in iwl_rx_reply_rx() for REPLY_RX_MPDU_CMD. */ 636static void iwlagn_rx_reply_rx_phy(struct iwl_priv *priv, 637 struct iwl_rx_cmd_buffer *rxb) 638{ 639 struct iwl_rx_packet *pkt = rxb_addr(rxb); 640 641 priv->last_phy_res_valid = true; 642 priv->ampdu_ref++; 643 memcpy(&priv->last_phy_res, pkt->data, 644 sizeof(struct iwl_rx_phy_res)); 645} 646 647/* 648 * returns non-zero if packet should be dropped 649 */ 650static int iwlagn_set_decrypted_flag(struct iwl_priv *priv, 651 struct ieee80211_hdr *hdr, 652 u32 decrypt_res, 653 struct ieee80211_rx_status *stats) 654{ 655 u16 fc = le16_to_cpu(hdr->frame_control); 656 657 /* 658 * All contexts have the same setting here due to it being 659 * a module parameter, so OK to check any context. 660 */ 661 if (priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags & 662 RXON_FILTER_DIS_DECRYPT_MSK) 663 return 0; 664 665 if (!(fc & IEEE80211_FCTL_PROTECTED)) 666 return 0; 667 668 IWL_DEBUG_RX(priv, "decrypt_res:0x%x\n", decrypt_res); 669 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) { 670 case RX_RES_STATUS_SEC_TYPE_TKIP: 671 /* The uCode has got a bad phase 1 Key, pushes the packet. 672 * Decryption will be done in SW. */ 673 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == 674 RX_RES_STATUS_BAD_KEY_TTAK) 675 break; 676 677 case RX_RES_STATUS_SEC_TYPE_WEP: 678 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == 679 RX_RES_STATUS_BAD_ICV_MIC) { 680 /* bad ICV, the packet is destroyed since the 681 * decryption is inplace, drop it */ 682 IWL_DEBUG_RX(priv, "Packet destroyed\n"); 683 return -1; 684 } 685 case RX_RES_STATUS_SEC_TYPE_CCMP: 686 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) == 687 RX_RES_STATUS_DECRYPT_OK) { 688 IWL_DEBUG_RX(priv, "hw decrypt successfully!!!\n"); 689 stats->flag |= RX_FLAG_DECRYPTED; 690 } 691 break; 692 693 default: 694 break; 695 } 696 return 0; 697} 698 699static void iwlagn_pass_packet_to_mac80211(struct iwl_priv *priv, 700 struct ieee80211_hdr *hdr, 701 u16 len, 702 u32 ampdu_status, 703 struct iwl_rx_cmd_buffer *rxb, 704 struct ieee80211_rx_status *stats) 705{ 706 struct sk_buff *skb; 707 __le16 fc = hdr->frame_control; 708 struct iwl_rxon_context *ctx; 709 unsigned int hdrlen, fraglen; 710 711 /* We only process data packets if the interface is open */ 712 if (unlikely(!priv->is_open)) { 713 IWL_DEBUG_DROP_LIMIT(priv, 714 "Dropping packet while interface is not open.\n"); 715 return; 716 } 717 718 /* In case of HW accelerated crypto and bad decryption, drop */ 719 if (!iwlwifi_mod_params.sw_crypto && 720 iwlagn_set_decrypted_flag(priv, hdr, ampdu_status, stats)) 721 return; 722 723 /* Dont use dev_alloc_skb(), we'll have enough headroom once 724 * ieee80211_hdr pulled. 725 */ 726 skb = alloc_skb(128, GFP_ATOMIC); 727 if (!skb) { 728 IWL_ERR(priv, "alloc_skb failed\n"); 729 return; 730 } 731 /* If frame is small enough to fit in skb->head, pull it completely. 732 * If not, only pull ieee80211_hdr so that splice() or TCP coalesce 733 * are more efficient. 734 */ 735 hdrlen = (len <= skb_tailroom(skb)) ? len : sizeof(*hdr); 736 737 memcpy(skb_put(skb, hdrlen), hdr, hdrlen); 738 fraglen = len - hdrlen; 739 740 if (fraglen) { 741 int offset = (void *)hdr + hdrlen - 742 rxb_addr(rxb) + rxb_offset(rxb); 743 744 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, 745 fraglen, rxb->truesize); 746 } 747 748 /* 749 * Wake any queues that were stopped due to a passive channel tx 750 * failure. This can happen because the regulatory enforcement in 751 * the device waits for a beacon before allowing transmission, 752 * sometimes even after already having transmitted frames for the 753 * association because the new RXON may reset the information. 754 */ 755 if (unlikely(ieee80211_is_beacon(fc) && priv->passive_no_rx)) { 756 for_each_context(priv, ctx) { 757 if (!ether_addr_equal(hdr->addr3, 758 ctx->active.bssid_addr)) 759 continue; 760 iwlagn_lift_passive_no_rx(priv); 761 } 762 } 763 764 memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats)); 765 766 ieee80211_rx_napi(priv->hw, skb, priv->napi); 767} 768 769static u32 iwlagn_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in) 770{ 771 u32 decrypt_out = 0; 772 773 if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) == 774 RX_RES_STATUS_STATION_FOUND) 775 decrypt_out |= (RX_RES_STATUS_STATION_FOUND | 776 RX_RES_STATUS_NO_STATION_INFO_MISMATCH); 777 778 decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK); 779 780 /* packet was not encrypted */ 781 if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == 782 RX_RES_STATUS_SEC_TYPE_NONE) 783 return decrypt_out; 784 785 /* packet was encrypted with unknown alg */ 786 if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == 787 RX_RES_STATUS_SEC_TYPE_ERR) 788 return decrypt_out; 789 790 /* decryption was not done in HW */ 791 if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) != 792 RX_MPDU_RES_STATUS_DEC_DONE_MSK) 793 return decrypt_out; 794 795 switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) { 796 797 case RX_RES_STATUS_SEC_TYPE_CCMP: 798 /* alg is CCM: check MIC only */ 799 if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK)) 800 /* Bad MIC */ 801 decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; 802 else 803 decrypt_out |= RX_RES_STATUS_DECRYPT_OK; 804 805 break; 806 807 case RX_RES_STATUS_SEC_TYPE_TKIP: 808 if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) { 809 /* Bad TTAK */ 810 decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK; 811 break; 812 } 813 /* fall through if TTAK OK */ 814 default: 815 if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK)) 816 decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; 817 else 818 decrypt_out |= RX_RES_STATUS_DECRYPT_OK; 819 break; 820 } 821 822 IWL_DEBUG_RX(priv, "decrypt_in:0x%x decrypt_out = 0x%x\n", 823 decrypt_in, decrypt_out); 824 825 return decrypt_out; 826} 827 828/* Calc max signal level (dBm) among 3 possible receivers */ 829static int iwlagn_calc_rssi(struct iwl_priv *priv, 830 struct iwl_rx_phy_res *rx_resp) 831{ 832 /* data from PHY/DSP regarding signal strength, etc., 833 * contents are always there, not configurable by host 834 */ 835 struct iwlagn_non_cfg_phy *ncphy = 836 (struct iwlagn_non_cfg_phy *)rx_resp->non_cfg_phy_buf; 837 u32 val, rssi_a, rssi_b, rssi_c, max_rssi; 838 u8 agc; 839 840 val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_AGC_IDX]); 841 agc = (val & IWLAGN_OFDM_AGC_MSK) >> IWLAGN_OFDM_AGC_BIT_POS; 842 843 /* Find max rssi among 3 possible receivers. 844 * These values are measured by the digital signal processor (DSP). 845 * They should stay fairly constant even as the signal strength varies, 846 * if the radio's automatic gain control (AGC) is working right. 847 * AGC value (see below) will provide the "interesting" info. 848 */ 849 val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_AB_IDX]); 850 rssi_a = (val & IWLAGN_OFDM_RSSI_INBAND_A_BITMSK) >> 851 IWLAGN_OFDM_RSSI_A_BIT_POS; 852 rssi_b = (val & IWLAGN_OFDM_RSSI_INBAND_B_BITMSK) >> 853 IWLAGN_OFDM_RSSI_B_BIT_POS; 854 val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_C_IDX]); 855 rssi_c = (val & IWLAGN_OFDM_RSSI_INBAND_C_BITMSK) >> 856 IWLAGN_OFDM_RSSI_C_BIT_POS; 857 858 max_rssi = max_t(u32, rssi_a, rssi_b); 859 max_rssi = max_t(u32, max_rssi, rssi_c); 860 861 IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n", 862 rssi_a, rssi_b, rssi_c, max_rssi, agc); 863 864 /* dBm = max_rssi dB - agc dB - constant. 865 * Higher AGC (higher radio gain) means lower signal. */ 866 return max_rssi - agc - IWLAGN_RSSI_OFFSET; 867} 868 869/* Called for REPLY_RX_MPDU_CMD */ 870static void iwlagn_rx_reply_rx(struct iwl_priv *priv, 871 struct iwl_rx_cmd_buffer *rxb) 872{ 873 struct ieee80211_hdr *header; 874 struct ieee80211_rx_status rx_status = {}; 875 struct iwl_rx_packet *pkt = rxb_addr(rxb); 876 struct iwl_rx_phy_res *phy_res; 877 __le32 rx_pkt_status; 878 struct iwl_rx_mpdu_res_start *amsdu; 879 u32 len; 880 u32 ampdu_status; 881 u32 rate_n_flags; 882 883 if (!priv->last_phy_res_valid) { 884 IWL_ERR(priv, "MPDU frame without cached PHY data\n"); 885 return; 886 } 887 phy_res = &priv->last_phy_res; 888 amsdu = (struct iwl_rx_mpdu_res_start *)pkt->data; 889 header = (struct ieee80211_hdr *)(pkt->data + sizeof(*amsdu)); 890 len = le16_to_cpu(amsdu->byte_count); 891 rx_pkt_status = *(__le32 *)(pkt->data + sizeof(*amsdu) + len); 892 ampdu_status = iwlagn_translate_rx_status(priv, 893 le32_to_cpu(rx_pkt_status)); 894 895 if ((unlikely(phy_res->cfg_phy_cnt > 20))) { 896 IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d\n", 897 phy_res->cfg_phy_cnt); 898 return; 899 } 900 901 if (!(rx_pkt_status & RX_RES_STATUS_NO_CRC32_ERROR) || 902 !(rx_pkt_status & RX_RES_STATUS_NO_RXE_OVERFLOW)) { 903 IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", 904 le32_to_cpu(rx_pkt_status)); 905 return; 906 } 907 908 /* This will be used in several places later */ 909 rate_n_flags = le32_to_cpu(phy_res->rate_n_flags); 910 911 /* rx_status carries information about the packet to mac80211 */ 912 rx_status.mactime = le64_to_cpu(phy_res->timestamp); 913 rx_status.band = (phy_res->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? 914 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; 915 rx_status.freq = 916 ieee80211_channel_to_frequency(le16_to_cpu(phy_res->channel), 917 rx_status.band); 918 rx_status.rate_idx = 919 iwlagn_hwrate_to_mac80211_idx(rate_n_flags, rx_status.band); 920 rx_status.flag = 0; 921 922 /* TSF isn't reliable. In order to allow smooth user experience, 923 * this W/A doesn't propagate it to the mac80211 */ 924 /*rx_status.flag |= RX_FLAG_MACTIME_START;*/ 925 926 priv->ucode_beacon_time = le32_to_cpu(phy_res->beacon_time_stamp); 927 928 /* Find max signal strength (dBm) among 3 antenna/receiver chains */ 929 rx_status.signal = iwlagn_calc_rssi(priv, phy_res); 930 931 IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, TSF %llu\n", 932 rx_status.signal, (unsigned long long)rx_status.mactime); 933 934 /* 935 * "antenna number" 936 * 937 * It seems that the antenna field in the phy flags value 938 * is actually a bit field. This is undefined by radiotap, 939 * it wants an actual antenna number but I always get "7" 940 * for most legacy frames I receive indicating that the 941 * same frame was received on all three RX chains. 942 * 943 * I think this field should be removed in favor of a 944 * new 802.11n radiotap field "RX chains" that is defined 945 * as a bitmask. 946 */ 947 rx_status.antenna = 948 (le16_to_cpu(phy_res->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA_MSK) 949 >> RX_RES_PHY_FLAGS_ANTENNA_POS; 950 951 /* set the preamble flag if appropriate */ 952 if (phy_res->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) 953 rx_status.flag |= RX_FLAG_SHORTPRE; 954 955 if (phy_res->phy_flags & RX_RES_PHY_FLAGS_AGG_MSK) { 956 /* 957 * We know which subframes of an A-MPDU belong 958 * together since we get a single PHY response 959 * from the firmware for all of them 960 */ 961 rx_status.flag |= RX_FLAG_AMPDU_DETAILS; 962 rx_status.ampdu_reference = priv->ampdu_ref; 963 } 964 965 /* Set up the HT phy flags */ 966 if (rate_n_flags & RATE_MCS_HT_MSK) 967 rx_status.flag |= RX_FLAG_HT; 968 if (rate_n_flags & RATE_MCS_HT40_MSK) 969 rx_status.flag |= RX_FLAG_40MHZ; 970 if (rate_n_flags & RATE_MCS_SGI_MSK) 971 rx_status.flag |= RX_FLAG_SHORT_GI; 972 if (rate_n_flags & RATE_MCS_GF_MSK) 973 rx_status.flag |= RX_FLAG_HT_GF; 974 975 iwlagn_pass_packet_to_mac80211(priv, header, len, ampdu_status, 976 rxb, &rx_status); 977} 978 979static void iwlagn_rx_noa_notification(struct iwl_priv *priv, 980 struct iwl_rx_cmd_buffer *rxb) 981{ 982 struct iwl_wipan_noa_data *new_data, *old_data; 983 struct iwl_rx_packet *pkt = rxb_addr(rxb); 984 struct iwl_wipan_noa_notification *noa_notif = (void *)pkt->data; 985 986 /* no condition -- we're in softirq */ 987 old_data = rcu_dereference_protected(priv->noa_data, true); 988 989 if (noa_notif->noa_active) { 990 u32 len = le16_to_cpu(noa_notif->noa_attribute.length); 991 u32 copylen = len; 992 993 /* EID, len, OUI, subtype */ 994 len += 1 + 1 + 3 + 1; 995 /* P2P id, P2P length */ 996 len += 1 + 2; 997 copylen += 1 + 2; 998 999 new_data = kmalloc(sizeof(*new_data) + len, GFP_ATOMIC); 1000 if (new_data) { 1001 new_data->length = len; 1002 new_data->data[0] = WLAN_EID_VENDOR_SPECIFIC; 1003 new_data->data[1] = len - 2; /* not counting EID, len */ 1004 new_data->data[2] = (WLAN_OUI_WFA >> 16) & 0xff; 1005 new_data->data[3] = (WLAN_OUI_WFA >> 8) & 0xff; 1006 new_data->data[4] = (WLAN_OUI_WFA >> 0) & 0xff; 1007 new_data->data[5] = WLAN_OUI_TYPE_WFA_P2P; 1008 memcpy(&new_data->data[6], &noa_notif->noa_attribute, 1009 copylen); 1010 } 1011 } else 1012 new_data = NULL; 1013 1014 rcu_assign_pointer(priv->noa_data, new_data); 1015 1016 if (old_data) 1017 kfree_rcu(old_data, rcu_head); 1018} 1019 1020/** 1021 * iwl_setup_rx_handlers - Initialize Rx handler callbacks 1022 * 1023 * Setup the RX handlers for each of the reply types sent from the uCode 1024 * to the host. 1025 */ 1026void iwl_setup_rx_handlers(struct iwl_priv *priv) 1027{ 1028 void (**handlers)(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb); 1029 1030 handlers = priv->rx_handlers; 1031 1032 handlers[REPLY_ERROR] = iwlagn_rx_reply_error; 1033 handlers[CHANNEL_SWITCH_NOTIFICATION] = iwlagn_rx_csa; 1034 handlers[SPECTRUM_MEASURE_NOTIFICATION] = 1035 iwlagn_rx_spectrum_measure_notif; 1036 handlers[PM_SLEEP_NOTIFICATION] = iwlagn_rx_pm_sleep_notif; 1037 handlers[PM_DEBUG_STATISTIC_NOTIFIC] = 1038 iwlagn_rx_pm_debug_statistics_notif; 1039 handlers[BEACON_NOTIFICATION] = iwlagn_rx_beacon_notif; 1040 handlers[REPLY_ADD_STA] = iwl_add_sta_callback; 1041 1042 handlers[REPLY_WIPAN_NOA_NOTIFICATION] = iwlagn_rx_noa_notification; 1043 1044 /* 1045 * The same handler is used for both the REPLY to a discrete 1046 * statistics request from the host as well as for the periodic 1047 * statistics notifications (after received beacons) from the uCode. 1048 */ 1049 handlers[REPLY_STATISTICS_CMD] = iwlagn_rx_reply_statistics; 1050 handlers[STATISTICS_NOTIFICATION] = iwlagn_rx_statistics; 1051 1052 iwl_setup_rx_scan_handlers(priv); 1053 1054 handlers[CARD_STATE_NOTIFICATION] = iwlagn_rx_card_state_notif; 1055 handlers[MISSED_BEACONS_NOTIFICATION] = 1056 iwlagn_rx_missed_beacon_notif; 1057 1058 /* Rx handlers */ 1059 handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy; 1060 handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx; 1061 1062 /* block ack */ 1063 handlers[REPLY_COMPRESSED_BA] = 1064 iwlagn_rx_reply_compressed_ba; 1065 1066 priv->rx_handlers[REPLY_TX] = iwlagn_rx_reply_tx; 1067 1068 /* set up notification wait support */ 1069 iwl_notification_wait_init(&priv->notif_wait); 1070 1071 /* Set up BT Rx handlers */ 1072 if (priv->lib->bt_params) 1073 iwlagn_bt_rx_handler_setup(priv); 1074} 1075 1076void iwl_rx_dispatch(struct iwl_op_mode *op_mode, struct napi_struct *napi, 1077 struct iwl_rx_cmd_buffer *rxb) 1078{ 1079 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1080 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); 1081 1082 /* 1083 * Do the notification wait before RX handlers so 1084 * even if the RX handler consumes the RXB we have 1085 * access to it in the notification wait entry. 1086 */ 1087 iwl_notification_wait_notify(&priv->notif_wait, pkt); 1088 1089 /* Based on type of command response or notification, 1090 * handle those that need handling via function in 1091 * rx_handlers table. See iwl_setup_rx_handlers() */ 1092 if (priv->rx_handlers[pkt->hdr.cmd]) { 1093 priv->rx_handlers_stats[pkt->hdr.cmd]++; 1094 priv->rx_handlers[pkt->hdr.cmd](priv, rxb); 1095 } else { 1096 /* No handling needed */ 1097 IWL_DEBUG_RX(priv, "No handler needed for %s, 0x%02x\n", 1098 iwl_dvm_get_cmd_string(pkt->hdr.cmd), 1099 pkt->hdr.cmd); 1100 } 1101} 1102