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 <linuxwifi@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 <linux/etherdevice.h> 65 #include <linux/skbuff.h> 66 #include "iwl-trans.h" 67 #include "mvm.h" 68 #include "fw-api.h" 69 #include "fw-dbg.h" 70 71 /* 72 * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler 73 * 74 * Copies the phy information in mvm->last_phy_info, it will be used when the 75 * actual data will come from the fw in the next packet. 76 */ 77 void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 78 { 79 struct iwl_rx_packet *pkt = rxb_addr(rxb); 80 81 memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info)); 82 mvm->ampdu_ref++; 83 84 #ifdef CONFIG_IWLWIFI_DEBUGFS 85 if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { 86 spin_lock(&mvm->drv_stats_lock); 87 mvm->drv_rx_stats.ampdu_count++; 88 spin_unlock(&mvm->drv_stats_lock); 89 } 90 #endif 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 */ 98 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, 99 struct napi_struct *napi, 100 struct sk_buff *skb, 101 struct ieee80211_hdr *hdr, u16 len, 102 u32 ampdu_status, u8 crypt_len, 103 struct iwl_rx_cmd_buffer *rxb) 104 { 105 unsigned int hdrlen, fraglen; 106 107 /* If frame is small enough to fit in skb->head, pull it completely. 108 * If not, only pull ieee80211_hdr (including crypto if present, and 109 * an additional 8 bytes for SNAP/ethertype, see below) so that 110 * splice() or TCP coalesce are more efficient. 111 * 112 * Since, in addition, ieee80211_data_to_8023() always pull in at 113 * least 8 bytes (possibly more for mesh) we can do the same here 114 * to save the cost of doing it later. That still doesn't pull in 115 * the actual IP header since the typical case has a SNAP header. 116 * If the latter changes (there are efforts in the standards group 117 * to do so) we should revisit this and ieee80211_data_to_8023(). 118 */ 119 hdrlen = (len <= skb_tailroom(skb)) ? len : 120 sizeof(*hdr) + crypt_len + 8; 121 122 memcpy(skb_put(skb, hdrlen), hdr, hdrlen); 123 fraglen = len - hdrlen; 124 125 if (fraglen) { 126 int offset = (void *)hdr + hdrlen - 127 rxb_addr(rxb) + rxb_offset(rxb); 128 129 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, 130 fraglen, rxb->truesize); 131 } 132 133 ieee80211_rx_napi(mvm->hw, skb, napi); 134 } 135 136 /* 137 * iwl_mvm_get_signal_strength - use new rx PHY INFO API 138 * values are reported by the fw as positive values - need to negate 139 * to obtain their dBM. Account for missing antennas by replacing 0 140 * values by -256dBm: practically 0 power and a non-feasible 8 bit value. 141 */ 142 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, 143 struct iwl_rx_phy_info *phy_info, 144 struct ieee80211_rx_status *rx_status) 145 { 146 int energy_a, energy_b, energy_c, max_energy; 147 u32 val; 148 149 val = 150 le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]); 151 energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >> 152 IWL_RX_INFO_ENERGY_ANT_A_POS; 153 energy_a = energy_a ? -energy_a : S8_MIN; 154 energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >> 155 IWL_RX_INFO_ENERGY_ANT_B_POS; 156 energy_b = energy_b ? -energy_b : S8_MIN; 157 energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >> 158 IWL_RX_INFO_ENERGY_ANT_C_POS; 159 energy_c = energy_c ? -energy_c : S8_MIN; 160 max_energy = max(energy_a, energy_b); 161 max_energy = max(max_energy, energy_c); 162 163 IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n", 164 energy_a, energy_b, energy_c, max_energy); 165 166 rx_status->signal = max_energy; 167 rx_status->chains = (le16_to_cpu(phy_info->phy_flags) & 168 RX_RES_PHY_FLAGS_ANTENNA) 169 >> RX_RES_PHY_FLAGS_ANTENNA_POS; 170 rx_status->chain_signal[0] = energy_a; 171 rx_status->chain_signal[1] = energy_b; 172 rx_status->chain_signal[2] = energy_c; 173 } 174 175 /* 176 * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format 177 * @mvm: the mvm object 178 * @hdr: 80211 header 179 * @stats: status in mac80211's format 180 * @rx_pkt_status: status coming from fw 181 * 182 * returns non 0 value if the packet should be dropped 183 */ 184 static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm, 185 struct ieee80211_hdr *hdr, 186 struct ieee80211_rx_status *stats, 187 u32 rx_pkt_status, 188 u8 *crypt_len) 189 { 190 if (!ieee80211_has_protected(hdr->frame_control) || 191 (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 192 RX_MPDU_RES_STATUS_SEC_NO_ENC) 193 return 0; 194 195 /* packet was encrypted with unknown alg */ 196 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 197 RX_MPDU_RES_STATUS_SEC_ENC_ERR) 198 return 0; 199 200 switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) { 201 case RX_MPDU_RES_STATUS_SEC_CCM_ENC: 202 /* alg is CCM: check MIC only */ 203 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) 204 return -1; 205 206 stats->flag |= RX_FLAG_DECRYPTED; 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 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta, 241 struct sk_buff *skb, 242 u32 status) 243 { 244 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 245 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 246 247 if (mvmvif->features & NETIF_F_RXCSUM && 248 status & RX_MPDU_RES_STATUS_CSUM_DONE && 249 status & RX_MPDU_RES_STATUS_CSUM_OK) 250 skb->ip_summed = CHECKSUM_UNNECESSARY; 251 } 252 253 /* 254 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler 255 * 256 * Handles the actual data of the Rx packet from the fw 257 */ 258 void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi, 259 struct iwl_rx_cmd_buffer *rxb) 260 { 261 struct ieee80211_hdr *hdr; 262 struct ieee80211_rx_status *rx_status; 263 struct iwl_rx_packet *pkt = rxb_addr(rxb); 264 struct iwl_rx_phy_info *phy_info; 265 struct iwl_rx_mpdu_res_start *rx_res; 266 struct ieee80211_sta *sta = NULL; 267 struct sk_buff *skb; 268 u32 len; 269 u32 ampdu_status; 270 u32 rate_n_flags; 271 u32 rx_pkt_status; 272 u8 crypt_len = 0; 273 274 phy_info = &mvm->last_phy_info; 275 rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; 276 hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res)); 277 len = le16_to_cpu(rx_res->byte_count); 278 rx_pkt_status = le32_to_cpup((__le32 *) 279 (pkt->data + sizeof(*rx_res) + len)); 280 281 /* Dont use dev_alloc_skb(), we'll have enough headroom once 282 * ieee80211_hdr pulled. 283 */ 284 skb = alloc_skb(128, GFP_ATOMIC); 285 if (!skb) { 286 IWL_ERR(mvm, "alloc_skb failed\n"); 287 return; 288 } 289 290 rx_status = IEEE80211_SKB_RXCB(skb); 291 292 /* 293 * drop the packet if it has failed being decrypted by HW 294 */ 295 if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status, 296 &crypt_len)) { 297 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n", 298 rx_pkt_status); 299 kfree_skb(skb); 300 return; 301 } 302 303 /* 304 * Keep packets with CRC errors (and with overrun) for monitor mode 305 * (otherwise the firmware discards them) but mark them as bad. 306 */ 307 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) || 308 !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) { 309 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status); 310 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; 311 } 312 313 /* This will be used in several places later */ 314 rate_n_flags = le32_to_cpu(phy_info->rate_n_flags); 315 316 /* rx_status carries information about the packet to mac80211 */ 317 rx_status->mactime = le64_to_cpu(phy_info->timestamp); 318 rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp); 319 rx_status->band = 320 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 321 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; 322 rx_status->freq = 323 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel), 324 rx_status->band); 325 /* 326 * TSF as indicated by the fw is at INA time, but mac80211 expects the 327 * TSF at the beginning of the MPDU. 328 */ 329 /*rx_status->flag |= RX_FLAG_MACTIME_MPDU;*/ 330 331 iwl_mvm_get_signal_strength(mvm, phy_info, rx_status); 332 333 IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal, 334 (unsigned long long)rx_status->mactime); 335 336 rcu_read_lock(); 337 if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) { 338 u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK; 339 340 id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT; 341 342 if (!WARN_ON_ONCE(id >= IWL_MVM_STATION_COUNT)) { 343 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); 344 if (IS_ERR(sta)) 345 sta = NULL; 346 } 347 } else if (!is_multicast_ether_addr(hdr->addr2)) { 348 /* This is fine since we prevent two stations with the same 349 * address from being added. 350 */ 351 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); 352 } 353 354 if (sta) { 355 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 356 357 /* We have tx blocked stations (with CS bit). If we heard 358 * frames from a blocked station on a new channel we can 359 * TX to it again. 360 */ 361 if (unlikely(mvm->csa_tx_block_bcn_timeout)) 362 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false); 363 364 rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status); 365 366 if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) && 367 ieee80211_is_beacon(hdr->frame_control)) { 368 struct iwl_fw_dbg_trigger_tlv *trig; 369 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; 370 bool trig_check; 371 s32 rssi; 372 373 trig = iwl_fw_dbg_get_trigger(mvm->fw, 374 FW_DBG_TRIGGER_RSSI); 375 rssi_trig = (void *)trig->data; 376 rssi = le32_to_cpu(rssi_trig->rssi); 377 378 trig_check = 379 iwl_fw_dbg_trigger_check_stop(mvm, mvmsta->vif, 380 trig); 381 if (trig_check && rx_status->signal < rssi) 382 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL); 383 } 384 385 if (ieee80211_is_data(hdr->frame_control)) 386 iwl_mvm_rx_csum(sta, skb, rx_pkt_status); 387 } 388 rcu_read_unlock(); 389 390 /* set the preamble flag if appropriate */ 391 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE)) 392 rx_status->flag |= RX_FLAG_SHORTPRE; 393 394 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { 395 /* 396 * We know which subframes of an A-MPDU belong 397 * together since we get a single PHY response 398 * from the firmware for all of them 399 */ 400 rx_status->flag |= RX_FLAG_AMPDU_DETAILS; 401 rx_status->ampdu_reference = mvm->ampdu_ref; 402 } 403 404 /* Set up the HT phy flags */ 405 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 406 case RATE_MCS_CHAN_WIDTH_20: 407 break; 408 case RATE_MCS_CHAN_WIDTH_40: 409 rx_status->flag |= RX_FLAG_40MHZ; 410 break; 411 case RATE_MCS_CHAN_WIDTH_80: 412 rx_status->vht_flag |= RX_VHT_FLAG_80MHZ; 413 break; 414 case RATE_MCS_CHAN_WIDTH_160: 415 rx_status->vht_flag |= RX_VHT_FLAG_160MHZ; 416 break; 417 } 418 if (rate_n_flags & RATE_MCS_SGI_MSK) 419 rx_status->flag |= RX_FLAG_SHORT_GI; 420 if (rate_n_flags & RATE_HT_MCS_GF_MSK) 421 rx_status->flag |= RX_FLAG_HT_GF; 422 if (rate_n_flags & RATE_MCS_LDPC_MSK) 423 rx_status->flag |= RX_FLAG_LDPC; 424 if (rate_n_flags & RATE_MCS_HT_MSK) { 425 u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >> 426 RATE_MCS_STBC_POS; 427 rx_status->flag |= RX_FLAG_HT; 428 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; 429 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; 430 } else if (rate_n_flags & RATE_MCS_VHT_MSK) { 431 u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >> 432 RATE_MCS_STBC_POS; 433 rx_status->vht_nss = 434 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> 435 RATE_VHT_MCS_NSS_POS) + 1; 436 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; 437 rx_status->flag |= RX_FLAG_VHT; 438 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; 439 if (rate_n_flags & RATE_MCS_BF_MSK) 440 rx_status->vht_flag |= RX_VHT_FLAG_BF; 441 } else { 442 rx_status->rate_idx = 443 iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, 444 rx_status->band); 445 } 446 447 #ifdef CONFIG_IWLWIFI_DEBUGFS 448 iwl_mvm_update_frame_stats(mvm, rate_n_flags, 449 rx_status->flag & RX_FLAG_AMPDU_DETAILS); 450 #endif 451 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, hdr, len, ampdu_status, 452 crypt_len, rxb); 453 } 454 455 static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm, 456 struct mvm_statistics_rx *rx_stats) 457 { 458 lockdep_assert_held(&mvm->mutex); 459 460 mvm->rx_stats = *rx_stats; 461 } 462 463 struct iwl_mvm_stat_data { 464 struct iwl_mvm *mvm; 465 __le32 mac_id; 466 u8 beacon_filter_average_energy; 467 struct mvm_statistics_general_v8 *general; 468 }; 469 470 static void iwl_mvm_stat_iterator(void *_data, u8 *mac, 471 struct ieee80211_vif *vif) 472 { 473 struct iwl_mvm_stat_data *data = _data; 474 struct iwl_mvm *mvm = data->mvm; 475 int sig = -data->beacon_filter_average_energy; 476 int last_event; 477 int thold = vif->bss_conf.cqm_rssi_thold; 478 int hyst = vif->bss_conf.cqm_rssi_hyst; 479 u16 id = le32_to_cpu(data->mac_id); 480 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 481 482 /* This doesn't need the MAC ID check since it's not taking the 483 * data copied into the "data" struct, but rather the data from 484 * the notification directly. 485 */ 486 if (data->general) { 487 mvmvif->beacon_stats.num_beacons = 488 le32_to_cpu(data->general->beacon_counter[mvmvif->id]); 489 mvmvif->beacon_stats.avg_signal = 490 -data->general->beacon_average_energy[mvmvif->id]; 491 } 492 493 if (mvmvif->id != id) 494 return; 495 496 if (vif->type != NL80211_IFTYPE_STATION) 497 return; 498 499 if (sig == 0) { 500 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n"); 501 return; 502 } 503 504 mvmvif->bf_data.ave_beacon_signal = sig; 505 506 /* BT Coex */ 507 if (mvmvif->bf_data.bt_coex_min_thold != 508 mvmvif->bf_data.bt_coex_max_thold) { 509 last_event = mvmvif->bf_data.last_bt_coex_event; 510 if (sig > mvmvif->bf_data.bt_coex_max_thold && 511 (last_event <= mvmvif->bf_data.bt_coex_min_thold || 512 last_event == 0)) { 513 mvmvif->bf_data.last_bt_coex_event = sig; 514 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", 515 sig); 516 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); 517 } else if (sig < mvmvif->bf_data.bt_coex_min_thold && 518 (last_event >= mvmvif->bf_data.bt_coex_max_thold || 519 last_event == 0)) { 520 mvmvif->bf_data.last_bt_coex_event = sig; 521 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", 522 sig); 523 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); 524 } 525 } 526 527 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 528 return; 529 530 /* CQM Notification */ 531 last_event = mvmvif->bf_data.last_cqm_event; 532 if (thold && sig < thold && (last_event == 0 || 533 sig < last_event - hyst)) { 534 mvmvif->bf_data.last_cqm_event = sig; 535 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", 536 sig); 537 ieee80211_cqm_rssi_notify( 538 vif, 539 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 540 GFP_KERNEL); 541 } else if (sig > thold && 542 (last_event == 0 || sig > last_event + hyst)) { 543 mvmvif->bf_data.last_cqm_event = sig; 544 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", 545 sig); 546 ieee80211_cqm_rssi_notify( 547 vif, 548 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 549 GFP_KERNEL); 550 } 551 } 552 553 static inline void 554 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) 555 { 556 struct iwl_fw_dbg_trigger_tlv *trig; 557 struct iwl_fw_dbg_trigger_stats *trig_stats; 558 u32 trig_offset, trig_thold; 559 560 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_STATS)) 561 return; 562 563 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_STATS); 564 trig_stats = (void *)trig->data; 565 566 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 567 return; 568 569 trig_offset = le32_to_cpu(trig_stats->stop_offset); 570 trig_thold = le32_to_cpu(trig_stats->stop_threshold); 571 572 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt))) 573 return; 574 575 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold) 576 return; 577 578 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL); 579 } 580 581 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, 582 struct iwl_rx_packet *pkt) 583 { 584 struct iwl_notif_statistics_v10 *stats = (void *)&pkt->data; 585 struct iwl_mvm_stat_data data = { 586 .mvm = mvm, 587 }; 588 u32 temperature; 589 590 if (iwl_rx_packet_payload_len(pkt) != sizeof(*stats)) 591 goto invalid; 592 593 temperature = le32_to_cpu(stats->general.radio_temperature); 594 data.mac_id = stats->rx.general.mac_id; 595 data.beacon_filter_average_energy = 596 stats->general.beacon_filter_average_energy; 597 598 iwl_mvm_update_rx_statistics(mvm, &stats->rx); 599 600 mvm->radio_stats.rx_time = le64_to_cpu(stats->general.rx_time); 601 mvm->radio_stats.tx_time = le64_to_cpu(stats->general.tx_time); 602 mvm->radio_stats.on_time_rf = 603 le64_to_cpu(stats->general.on_time_rf); 604 mvm->radio_stats.on_time_scan = 605 le64_to_cpu(stats->general.on_time_scan); 606 607 data.general = &stats->general; 608 609 iwl_mvm_rx_stats_check_trigger(mvm, pkt); 610 611 ieee80211_iterate_active_interfaces(mvm->hw, 612 IEEE80211_IFACE_ITER_NORMAL, 613 iwl_mvm_stat_iterator, 614 &data); 615 return; 616 invalid: 617 IWL_ERR(mvm, "received invalid statistics size (%d)!\n", 618 iwl_rx_packet_payload_len(pkt)); 619 } 620 621 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 622 { 623 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb)); 624 } 625