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 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 23 * USA 24 * 25 * The full GNU General Public License is included in this distribution 26 * in the file called COPYING. 27 * 28 * Contact Information: 29 * Intel Linux Wireless <ilw@linux.intel.com> 30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 31 * 32 * BSD LICENSE 33 * 34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 42 * * Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * * Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in 46 * the documentation and/or other materials provided with the 47 * distribution. 48 * * Neither the name Intel Corporation nor the names of its 49 * contributors may be used to endorse or promote products derived 50 * from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 *****************************************************************************/ 64#include "iwl-trans.h" 65#include "mvm.h" 66#include "fw-api.h" 67 68/* 69 * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler 70 * 71 * Copies the phy information in mvm->last_phy_info, it will be used when the 72 * actual data will come from the fw in the next packet. 73 */ 74int iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, 75 struct iwl_device_cmd *cmd) 76{ 77 struct iwl_rx_packet *pkt = rxb_addr(rxb); 78 79 memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info)); 80 mvm->ampdu_ref++; 81 82#ifdef CONFIG_IWLWIFI_DEBUGFS 83 if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { 84 spin_lock(&mvm->drv_stats_lock); 85 mvm->drv_rx_stats.ampdu_count++; 86 spin_unlock(&mvm->drv_stats_lock); 87 } 88#endif 89 90 return 0; 91} 92 93/* 94 * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211 95 * 96 * Adds the rxb to a new skb and give it to mac80211 97 */ 98static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, 99 struct sk_buff *skb, 100 struct ieee80211_hdr *hdr, u16 len, 101 u32 ampdu_status, u8 crypt_len, 102 struct iwl_rx_cmd_buffer *rxb) 103{ 104 unsigned int hdrlen, fraglen; 105 106 /* If frame is small enough to fit in skb->head, pull it completely. 107 * If not, only pull ieee80211_hdr (including crypto if present, and 108 * an additional 8 bytes for SNAP/ethertype, see below) so that 109 * splice() or TCP coalesce are more efficient. 110 * 111 * Since, in addition, ieee80211_data_to_8023() always pull in at 112 * least 8 bytes (possibly more for mesh) we can do the same here 113 * to save the cost of doing it later. That still doesn't pull in 114 * the actual IP header since the typical case has a SNAP header. 115 * If the latter changes (there are efforts in the standards group 116 * to do so) we should revisit this and ieee80211_data_to_8023(). 117 */ 118 hdrlen = (len <= skb_tailroom(skb)) ? len : 119 sizeof(*hdr) + crypt_len + 8; 120 121 memcpy(skb_put(skb, hdrlen), hdr, hdrlen); 122 fraglen = len - hdrlen; 123 124 if (fraglen) { 125 int offset = (void *)hdr + hdrlen - 126 rxb_addr(rxb) + rxb_offset(rxb); 127 128 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, 129 fraglen, rxb->truesize); 130 } 131 132 ieee80211_rx(mvm->hw, skb); 133} 134 135/* 136 * iwl_mvm_get_signal_strength - use new rx PHY INFO API 137 * values are reported by the fw as positive values - need to negate 138 * to obtain their dBM. Account for missing antennas by replacing 0 139 * values by -256dBm: practically 0 power and a non-feasible 8 bit value. 140 */ 141static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, 142 struct iwl_rx_phy_info *phy_info, 143 struct ieee80211_rx_status *rx_status) 144{ 145 int energy_a, energy_b, energy_c, max_energy; 146 u32 val; 147 148 val = 149 le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]); 150 energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >> 151 IWL_RX_INFO_ENERGY_ANT_A_POS; 152 energy_a = energy_a ? -energy_a : S8_MIN; 153 energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >> 154 IWL_RX_INFO_ENERGY_ANT_B_POS; 155 energy_b = energy_b ? -energy_b : S8_MIN; 156 energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >> 157 IWL_RX_INFO_ENERGY_ANT_C_POS; 158 energy_c = energy_c ? -energy_c : S8_MIN; 159 max_energy = max(energy_a, energy_b); 160 max_energy = max(max_energy, energy_c); 161 162 IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n", 163 energy_a, energy_b, energy_c, max_energy); 164 165 rx_status->signal = max_energy; 166 rx_status->chains = (le16_to_cpu(phy_info->phy_flags) & 167 RX_RES_PHY_FLAGS_ANTENNA) 168 >> RX_RES_PHY_FLAGS_ANTENNA_POS; 169 rx_status->chain_signal[0] = energy_a; 170 rx_status->chain_signal[1] = energy_b; 171 rx_status->chain_signal[2] = energy_c; 172} 173 174/* 175 * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format 176 * @mvm: the mvm object 177 * @hdr: 80211 header 178 * @stats: status in mac80211's format 179 * @rx_pkt_status: status coming from fw 180 * 181 * returns non 0 value if the packet should be dropped 182 */ 183static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm, 184 struct ieee80211_hdr *hdr, 185 struct ieee80211_rx_status *stats, 186 u32 rx_pkt_status, 187 u8 *crypt_len) 188{ 189 if (!ieee80211_has_protected(hdr->frame_control) || 190 (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 191 RX_MPDU_RES_STATUS_SEC_NO_ENC) 192 return 0; 193 194 /* packet was encrypted with unknown alg */ 195 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 196 RX_MPDU_RES_STATUS_SEC_ENC_ERR) 197 return 0; 198 199 switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) { 200 case RX_MPDU_RES_STATUS_SEC_CCM_ENC: 201 /* alg is CCM: check MIC only */ 202 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) 203 return -1; 204 205 stats->flag |= RX_FLAG_DECRYPTED; 206 IWL_DEBUG_WEP(mvm, "hw decrypted CCMP successfully\n"); 207 *crypt_len = IEEE80211_CCMP_HDR_LEN; 208 return 0; 209 210 case RX_MPDU_RES_STATUS_SEC_TKIP_ENC: 211 /* Don't drop the frame and decrypt it in SW */ 212 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK)) 213 return 0; 214 *crypt_len = IEEE80211_TKIP_IV_LEN; 215 /* fall through if TTAK OK */ 216 217 case RX_MPDU_RES_STATUS_SEC_WEP_ENC: 218 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK)) 219 return -1; 220 221 stats->flag |= RX_FLAG_DECRYPTED; 222 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 223 RX_MPDU_RES_STATUS_SEC_WEP_ENC) 224 *crypt_len = IEEE80211_WEP_IV_LEN; 225 return 0; 226 227 case RX_MPDU_RES_STATUS_SEC_EXT_ENC: 228 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) 229 return -1; 230 stats->flag |= RX_FLAG_DECRYPTED; 231 return 0; 232 233 default: 234 IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status); 235 } 236 237 return 0; 238} 239 240/* 241 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler 242 * 243 * Handles the actual data of the Rx packet from the fw 244 */ 245int iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, 246 struct iwl_device_cmd *cmd) 247{ 248 struct ieee80211_hdr *hdr; 249 struct ieee80211_rx_status *rx_status; 250 struct iwl_rx_packet *pkt = rxb_addr(rxb); 251 struct iwl_rx_phy_info *phy_info; 252 struct iwl_rx_mpdu_res_start *rx_res; 253 struct ieee80211_sta *sta; 254 struct sk_buff *skb; 255 u32 len; 256 u32 ampdu_status; 257 u32 rate_n_flags; 258 u32 rx_pkt_status; 259 u8 crypt_len = 0; 260 261 phy_info = &mvm->last_phy_info; 262 rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; 263 hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res)); 264 len = le16_to_cpu(rx_res->byte_count); 265 rx_pkt_status = le32_to_cpup((__le32 *) 266 (pkt->data + sizeof(*rx_res) + len)); 267 268 /* Dont use dev_alloc_skb(), we'll have enough headroom once 269 * ieee80211_hdr pulled. 270 */ 271 skb = alloc_skb(128, GFP_ATOMIC); 272 if (!skb) { 273 IWL_ERR(mvm, "alloc_skb failed\n"); 274 return 0; 275 } 276 277 rx_status = IEEE80211_SKB_RXCB(skb); 278 279 /* 280 * drop the packet if it has failed being decrypted by HW 281 */ 282 if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status, 283 &crypt_len)) { 284 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n", 285 rx_pkt_status); 286 kfree_skb(skb); 287 return 0; 288 } 289 290 if ((unlikely(phy_info->cfg_phy_cnt > 20))) { 291 IWL_DEBUG_DROP(mvm, "dsp size out of range [0,20]: %d\n", 292 phy_info->cfg_phy_cnt); 293 kfree_skb(skb); 294 return 0; 295 } 296 297 /* 298 * Keep packets with CRC errors (and with overrun) for monitor mode 299 * (otherwise the firmware discards them) but mark them as bad. 300 */ 301 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) || 302 !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) { 303 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status); 304 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; 305 } 306 307 /* This will be used in several places later */ 308 rate_n_flags = le32_to_cpu(phy_info->rate_n_flags); 309 310 /* rx_status carries information about the packet to mac80211 */ 311 rx_status->mactime = le64_to_cpu(phy_info->timestamp); 312 rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp); 313 rx_status->band = 314 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 315 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; 316 rx_status->freq = 317 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel), 318 rx_status->band); 319 /* 320 * TSF as indicated by the fw is at INA time, but mac80211 expects the 321 * TSF at the beginning of the MPDU. 322 */ 323 /*rx_status->flag |= RX_FLAG_MACTIME_MPDU;*/ 324 325 iwl_mvm_get_signal_strength(mvm, phy_info, rx_status); 326 327 IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal, 328 (unsigned long long)rx_status->mactime); 329 330 rcu_read_lock(); 331 /* 332 * We have tx blocked stations (with CS bit). If we heard frames from 333 * a blocked station on a new channel we can TX to it again. 334 */ 335 if (unlikely(mvm->csa_tx_block_bcn_timeout)) { 336 sta = ieee80211_find_sta( 337 rcu_dereference(mvm->csa_tx_blocked_vif), hdr->addr2); 338 if (sta) 339 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false); 340 } 341 342 /* This is fine since we don't support multiple AP interfaces */ 343 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); 344 if (sta) { 345 struct iwl_mvm_sta *mvmsta; 346 mvmsta = iwl_mvm_sta_from_mac80211(sta); 347 rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status); 348 349 if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) && 350 ieee80211_is_beacon(hdr->frame_control)) { 351 struct iwl_fw_dbg_trigger_tlv *trig; 352 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; 353 bool trig_check; 354 s32 rssi; 355 356 trig = iwl_fw_dbg_get_trigger(mvm->fw, 357 FW_DBG_TRIGGER_RSSI); 358 rssi_trig = (void *)trig->data; 359 rssi = le32_to_cpu(rssi_trig->rssi); 360 361 trig_check = 362 iwl_fw_dbg_trigger_check_stop(mvm, mvmsta->vif, 363 trig); 364 if (trig_check && rx_status->signal < rssi) 365 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL); 366 } 367 } 368 369 rcu_read_unlock(); 370 371 /* set the preamble flag if appropriate */ 372 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE)) 373 rx_status->flag |= RX_FLAG_SHORTPRE; 374 375 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { 376 /* 377 * We know which subframes of an A-MPDU belong 378 * together since we get a single PHY response 379 * from the firmware for all of them 380 */ 381 rx_status->flag |= RX_FLAG_AMPDU_DETAILS; 382 rx_status->ampdu_reference = mvm->ampdu_ref; 383 } 384 385 /* Set up the HT phy flags */ 386 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 387 case RATE_MCS_CHAN_WIDTH_20: 388 break; 389 case RATE_MCS_CHAN_WIDTH_40: 390 rx_status->flag |= RX_FLAG_40MHZ; 391 break; 392 case RATE_MCS_CHAN_WIDTH_80: 393 rx_status->vht_flag |= RX_VHT_FLAG_80MHZ; 394 break; 395 case RATE_MCS_CHAN_WIDTH_160: 396 rx_status->vht_flag |= RX_VHT_FLAG_160MHZ; 397 break; 398 } 399 if (rate_n_flags & RATE_MCS_SGI_MSK) 400 rx_status->flag |= RX_FLAG_SHORT_GI; 401 if (rate_n_flags & RATE_HT_MCS_GF_MSK) 402 rx_status->flag |= RX_FLAG_HT_GF; 403 if (rate_n_flags & RATE_MCS_LDPC_MSK) 404 rx_status->flag |= RX_FLAG_LDPC; 405 if (rate_n_flags & RATE_MCS_HT_MSK) { 406 u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >> 407 RATE_MCS_STBC_POS; 408 rx_status->flag |= RX_FLAG_HT; 409 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; 410 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; 411 } else if (rate_n_flags & RATE_MCS_VHT_MSK) { 412 u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >> 413 RATE_MCS_STBC_POS; 414 rx_status->vht_nss = 415 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> 416 RATE_VHT_MCS_NSS_POS) + 1; 417 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; 418 rx_status->flag |= RX_FLAG_VHT; 419 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; 420 if (rate_n_flags & RATE_MCS_BF_MSK) 421 rx_status->vht_flag |= RX_VHT_FLAG_BF; 422 } else { 423 rx_status->rate_idx = 424 iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, 425 rx_status->band); 426 } 427 428#ifdef CONFIG_IWLWIFI_DEBUGFS 429 iwl_mvm_update_frame_stats(mvm, rate_n_flags, 430 rx_status->flag & RX_FLAG_AMPDU_DETAILS); 431#endif 432 iwl_mvm_pass_packet_to_mac80211(mvm, skb, hdr, len, ampdu_status, 433 crypt_len, rxb); 434 return 0; 435} 436 437static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm, 438 struct mvm_statistics_rx *rx_stats) 439{ 440 lockdep_assert_held(&mvm->mutex); 441 442 mvm->rx_stats = *rx_stats; 443} 444 445struct iwl_mvm_stat_data { 446 struct iwl_mvm *mvm; 447 __le32 mac_id; 448 __s8 beacon_filter_average_energy; 449 struct mvm_statistics_general_v8 *general; 450}; 451 452static void iwl_mvm_stat_iterator(void *_data, u8 *mac, 453 struct ieee80211_vif *vif) 454{ 455 struct iwl_mvm_stat_data *data = _data; 456 struct iwl_mvm *mvm = data->mvm; 457 int sig = -data->beacon_filter_average_energy; 458 int last_event; 459 int thold = vif->bss_conf.cqm_rssi_thold; 460 int hyst = vif->bss_conf.cqm_rssi_hyst; 461 u16 id = le32_to_cpu(data->mac_id); 462 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 463 464 /* This doesn't need the MAC ID check since it's not taking the 465 * data copied into the "data" struct, but rather the data from 466 * the notification directly. 467 */ 468 if (data->general) { 469 mvmvif->beacon_stats.num_beacons = 470 le32_to_cpu(data->general->beacon_counter[mvmvif->id]); 471 mvmvif->beacon_stats.avg_signal = 472 -data->general->beacon_average_energy[mvmvif->id]; 473 } 474 475 if (mvmvif->id != id) 476 return; 477 478 if (vif->type != NL80211_IFTYPE_STATION) 479 return; 480 481 if (sig == 0) { 482 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n"); 483 return; 484 } 485 486 mvmvif->bf_data.ave_beacon_signal = sig; 487 488 /* BT Coex */ 489 if (mvmvif->bf_data.bt_coex_min_thold != 490 mvmvif->bf_data.bt_coex_max_thold) { 491 last_event = mvmvif->bf_data.last_bt_coex_event; 492 if (sig > mvmvif->bf_data.bt_coex_max_thold && 493 (last_event <= mvmvif->bf_data.bt_coex_min_thold || 494 last_event == 0)) { 495 mvmvif->bf_data.last_bt_coex_event = sig; 496 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", 497 sig); 498 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); 499 } else if (sig < mvmvif->bf_data.bt_coex_min_thold && 500 (last_event >= mvmvif->bf_data.bt_coex_max_thold || 501 last_event == 0)) { 502 mvmvif->bf_data.last_bt_coex_event = sig; 503 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", 504 sig); 505 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); 506 } 507 } 508 509 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 510 return; 511 512 /* CQM Notification */ 513 last_event = mvmvif->bf_data.last_cqm_event; 514 if (thold && sig < thold && (last_event == 0 || 515 sig < last_event - hyst)) { 516 mvmvif->bf_data.last_cqm_event = sig; 517 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", 518 sig); 519 ieee80211_cqm_rssi_notify( 520 vif, 521 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 522 GFP_KERNEL); 523 } else if (sig > thold && 524 (last_event == 0 || sig > last_event + hyst)) { 525 mvmvif->bf_data.last_cqm_event = sig; 526 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", 527 sig); 528 ieee80211_cqm_rssi_notify( 529 vif, 530 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 531 GFP_KERNEL); 532 } 533} 534 535static inline void 536iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) 537{ 538 struct iwl_fw_dbg_trigger_tlv *trig; 539 struct iwl_fw_dbg_trigger_stats *trig_stats; 540 u32 trig_offset, trig_thold; 541 542 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_STATS)) 543 return; 544 545 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_STATS); 546 trig_stats = (void *)trig->data; 547 548 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 549 return; 550 551 trig_offset = le32_to_cpu(trig_stats->stop_offset); 552 trig_thold = le32_to_cpu(trig_stats->stop_threshold); 553 554 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt))) 555 return; 556 557 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold) 558 return; 559 560 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL); 561} 562 563void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, 564 struct iwl_rx_packet *pkt) 565{ 566 size_t v8_len = sizeof(struct iwl_notif_statistics_v8); 567 size_t v10_len = sizeof(struct iwl_notif_statistics_v10); 568 struct iwl_mvm_stat_data data = { 569 .mvm = mvm, 570 }; 571 u32 temperature; 572 573 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_STATS_V10) { 574 struct iwl_notif_statistics_v10 *stats = (void *)&pkt->data; 575 576 if (iwl_rx_packet_payload_len(pkt) != v10_len) 577 goto invalid; 578 579 temperature = le32_to_cpu(stats->general.radio_temperature); 580 data.mac_id = stats->rx.general.mac_id; 581 data.beacon_filter_average_energy = 582 stats->general.beacon_filter_average_energy; 583 584 iwl_mvm_update_rx_statistics(mvm, &stats->rx); 585 586 mvm->radio_stats.rx_time = le64_to_cpu(stats->general.rx_time); 587 mvm->radio_stats.tx_time = le64_to_cpu(stats->general.tx_time); 588 mvm->radio_stats.on_time_rf = 589 le64_to_cpu(stats->general.on_time_rf); 590 mvm->radio_stats.on_time_scan = 591 le64_to_cpu(stats->general.on_time_scan); 592 593 data.general = &stats->general; 594 } else { 595 struct iwl_notif_statistics_v8 *stats = (void *)&pkt->data; 596 597 if (iwl_rx_packet_payload_len(pkt) != v8_len) 598 goto invalid; 599 600 temperature = le32_to_cpu(stats->general.radio_temperature); 601 data.mac_id = stats->rx.general.mac_id; 602 data.beacon_filter_average_energy = 603 stats->general.beacon_filter_average_energy; 604 605 iwl_mvm_update_rx_statistics(mvm, &stats->rx); 606 } 607 608 iwl_mvm_rx_stats_check_trigger(mvm, pkt); 609 610 /* Only handle rx statistics temperature changes if async temp 611 * notifications are not supported 612 */ 613 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_ASYNC_DTM)) 614 iwl_mvm_tt_temp_changed(mvm, temperature); 615 616 ieee80211_iterate_active_interfaces(mvm->hw, 617 IEEE80211_IFACE_ITER_NORMAL, 618 iwl_mvm_stat_iterator, 619 &data); 620 return; 621 invalid: 622 IWL_ERR(mvm, "received invalid statistics size (%d)!\n", 623 iwl_rx_packet_payload_len(pkt)); 624} 625 626int iwl_mvm_rx_statistics(struct iwl_mvm *mvm, 627 struct iwl_rx_cmd_buffer *rxb, 628 struct iwl_device_cmd *cmd) 629{ 630 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb)); 631 return 0; 632} 633