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 * Copyright(c) 2016 Intel Deutschland GmbH 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 24 * USA 25 * 26 * The full GNU General Public License is included in this distribution 27 * in the file called COPYING. 28 * 29 * Contact Information: 30 * Intel Linux Wireless <linuxwifi@intel.com> 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32 * 33 * BSD LICENSE 34 * 35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 37 * All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 43 * * Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * * Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in 47 * the documentation and/or other materials provided with the 48 * distribution. 49 * * Neither the name Intel Corporation nor the names of its 50 * contributors may be used to endorse or promote products derived 51 * from this software without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 64 *****************************************************************************/ 65 #include <linux/etherdevice.h> 66 #include <linux/skbuff.h> 67 #include "iwl-trans.h" 68 #include "mvm.h" 69 #include "fw-api.h" 70 #include "fw-dbg.h" 71 72 /* 73 * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler 74 * 75 * Copies the phy information in mvm->last_phy_info, it will be used when the 76 * actual data will come from the fw in the next packet. 77 */ 78 void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 79 { 80 struct iwl_rx_packet *pkt = rxb_addr(rxb); 81 82 memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info)); 83 mvm->ampdu_ref++; 84 85 #ifdef CONFIG_IWLWIFI_DEBUGFS 86 if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { 87 spin_lock(&mvm->drv_stats_lock); 88 mvm->drv_rx_stats.ampdu_count++; 89 spin_unlock(&mvm->drv_stats_lock); 90 } 91 #endif 92 } 93 94 /* 95 * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211 96 * 97 * Adds the rxb to a new skb and give it to mac80211 98 */ 99 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, 100 struct napi_struct *napi, 101 struct sk_buff *skb, 102 struct ieee80211_hdr *hdr, u16 len, 103 u32 ampdu_status, u8 crypt_len, 104 struct iwl_rx_cmd_buffer *rxb) 105 { 106 unsigned int hdrlen, fraglen; 107 108 /* If frame is small enough to fit in skb->head, pull it completely. 109 * If not, only pull ieee80211_hdr (including crypto if present, and 110 * an additional 8 bytes for SNAP/ethertype, see below) so that 111 * splice() or TCP coalesce are more efficient. 112 * 113 * Since, in addition, ieee80211_data_to_8023() always pull in at 114 * least 8 bytes (possibly more for mesh) we can do the same here 115 * to save the cost of doing it later. That still doesn't pull in 116 * the actual IP header since the typical case has a SNAP header. 117 * If the latter changes (there are efforts in the standards group 118 * to do so) we should revisit this and ieee80211_data_to_8023(). 119 */ 120 hdrlen = (len <= skb_tailroom(skb)) ? len : 121 sizeof(*hdr) + crypt_len + 8; 122 123 memcpy(skb_put(skb, hdrlen), hdr, hdrlen); 124 fraglen = len - hdrlen; 125 126 if (fraglen) { 127 int offset = (void *)hdr + hdrlen - 128 rxb_addr(rxb) + rxb_offset(rxb); 129 130 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, 131 fraglen, rxb->truesize); 132 } 133 134 ieee80211_rx_napi(mvm->hw, skb, napi); 135 } 136 137 /* 138 * iwl_mvm_get_signal_strength - use new rx PHY INFO API 139 * values are reported by the fw as positive values - need to negate 140 * to obtain their dBM. Account for missing antennas by replacing 0 141 * values by -256dBm: practically 0 power and a non-feasible 8 bit value. 142 */ 143 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, 144 struct iwl_rx_phy_info *phy_info, 145 struct ieee80211_rx_status *rx_status) 146 { 147 int energy_a, energy_b, energy_c, max_energy; 148 u32 val; 149 150 val = 151 le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]); 152 energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >> 153 IWL_RX_INFO_ENERGY_ANT_A_POS; 154 energy_a = energy_a ? -energy_a : S8_MIN; 155 energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >> 156 IWL_RX_INFO_ENERGY_ANT_B_POS; 157 energy_b = energy_b ? -energy_b : S8_MIN; 158 energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >> 159 IWL_RX_INFO_ENERGY_ANT_C_POS; 160 energy_c = energy_c ? -energy_c : S8_MIN; 161 max_energy = max(energy_a, energy_b); 162 max_energy = max(max_energy, energy_c); 163 164 IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n", 165 energy_a, energy_b, energy_c, max_energy); 166 167 rx_status->signal = max_energy; 168 rx_status->chains = (le16_to_cpu(phy_info->phy_flags) & 169 RX_RES_PHY_FLAGS_ANTENNA) 170 >> RX_RES_PHY_FLAGS_ANTENNA_POS; 171 rx_status->chain_signal[0] = energy_a; 172 rx_status->chain_signal[1] = energy_b; 173 rx_status->chain_signal[2] = energy_c; 174 } 175 176 /* 177 * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format 178 * @mvm: the mvm object 179 * @hdr: 80211 header 180 * @stats: status in mac80211's format 181 * @rx_pkt_status: status coming from fw 182 * 183 * returns non 0 value if the packet should be dropped 184 */ 185 static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm, 186 struct ieee80211_hdr *hdr, 187 struct ieee80211_rx_status *stats, 188 u32 rx_pkt_status, 189 u8 *crypt_len) 190 { 191 if (!ieee80211_has_protected(hdr->frame_control) || 192 (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 193 RX_MPDU_RES_STATUS_SEC_NO_ENC) 194 return 0; 195 196 /* packet was encrypted with unknown alg */ 197 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 198 RX_MPDU_RES_STATUS_SEC_ENC_ERR) 199 return 0; 200 201 switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) { 202 case RX_MPDU_RES_STATUS_SEC_CCM_ENC: 203 /* alg is CCM: check MIC only */ 204 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) 205 return -1; 206 207 stats->flag |= RX_FLAG_DECRYPTED; 208 *crypt_len = IEEE80211_CCMP_HDR_LEN; 209 return 0; 210 211 case RX_MPDU_RES_STATUS_SEC_TKIP_ENC: 212 /* Don't drop the frame and decrypt it in SW */ 213 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK)) 214 return 0; 215 *crypt_len = IEEE80211_TKIP_IV_LEN; 216 /* fall through if TTAK OK */ 217 218 case RX_MPDU_RES_STATUS_SEC_WEP_ENC: 219 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK)) 220 return -1; 221 222 stats->flag |= RX_FLAG_DECRYPTED; 223 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == 224 RX_MPDU_RES_STATUS_SEC_WEP_ENC) 225 *crypt_len = IEEE80211_WEP_IV_LEN; 226 return 0; 227 228 case RX_MPDU_RES_STATUS_SEC_EXT_ENC: 229 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) 230 return -1; 231 stats->flag |= RX_FLAG_DECRYPTED; 232 return 0; 233 234 default: 235 IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status); 236 } 237 238 return 0; 239 } 240 241 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta, 242 struct sk_buff *skb, 243 u32 status) 244 { 245 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 246 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 247 248 if (mvmvif->features & NETIF_F_RXCSUM && 249 status & RX_MPDU_RES_STATUS_CSUM_DONE && 250 status & RX_MPDU_RES_STATUS_CSUM_OK) 251 skb->ip_summed = CHECKSUM_UNNECESSARY; 252 } 253 254 /* 255 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler 256 * 257 * Handles the actual data of the Rx packet from the fw 258 */ 259 void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi, 260 struct iwl_rx_cmd_buffer *rxb) 261 { 262 struct ieee80211_hdr *hdr; 263 struct ieee80211_rx_status *rx_status; 264 struct iwl_rx_packet *pkt = rxb_addr(rxb); 265 struct iwl_rx_phy_info *phy_info; 266 struct iwl_rx_mpdu_res_start *rx_res; 267 struct ieee80211_sta *sta = NULL; 268 struct sk_buff *skb; 269 u32 len; 270 u32 ampdu_status; 271 u32 rate_n_flags; 272 u32 rx_pkt_status; 273 u8 crypt_len = 0; 274 275 phy_info = &mvm->last_phy_info; 276 rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; 277 hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res)); 278 len = le16_to_cpu(rx_res->byte_count); 279 rx_pkt_status = le32_to_cpup((__le32 *) 280 (pkt->data + sizeof(*rx_res) + len)); 281 282 /* Dont use dev_alloc_skb(), we'll have enough headroom once 283 * ieee80211_hdr pulled. 284 */ 285 skb = alloc_skb(128, GFP_ATOMIC); 286 if (!skb) { 287 IWL_ERR(mvm, "alloc_skb failed\n"); 288 return; 289 } 290 291 rx_status = IEEE80211_SKB_RXCB(skb); 292 293 /* 294 * drop the packet if it has failed being decrypted by HW 295 */ 296 if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status, 297 &crypt_len)) { 298 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n", 299 rx_pkt_status); 300 kfree_skb(skb); 301 return; 302 } 303 304 /* 305 * Keep packets with CRC errors (and with overrun) for monitor mode 306 * (otherwise the firmware discards them) but mark them as bad. 307 */ 308 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) || 309 !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) { 310 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status); 311 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; 312 } 313 314 /* This will be used in several places later */ 315 rate_n_flags = le32_to_cpu(phy_info->rate_n_flags); 316 317 /* rx_status carries information about the packet to mac80211 */ 318 rx_status->mactime = le64_to_cpu(phy_info->timestamp); 319 rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp); 320 rx_status->band = 321 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 322 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; 323 rx_status->freq = 324 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel), 325 rx_status->band); 326 327 /* TSF as indicated by the firmware is at INA time */ 328 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; 329 330 iwl_mvm_get_signal_strength(mvm, phy_info, rx_status); 331 332 IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal, 333 (unsigned long long)rx_status->mactime); 334 335 rcu_read_lock(); 336 if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) { 337 u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK; 338 339 id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT; 340 341 if (!WARN_ON_ONCE(id >= IWL_MVM_STATION_COUNT)) { 342 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); 343 if (IS_ERR(sta)) 344 sta = NULL; 345 } 346 } else if (!is_multicast_ether_addr(hdr->addr2)) { 347 /* This is fine since we prevent two stations with the same 348 * address from being added. 349 */ 350 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); 351 } 352 353 if (sta) { 354 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 355 356 /* We have tx blocked stations (with CS bit). If we heard 357 * frames from a blocked station on a new channel we can 358 * TX to it again. 359 */ 360 if (unlikely(mvm->csa_tx_block_bcn_timeout)) 361 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false); 362 363 rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status); 364 365 if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) && 366 ieee80211_is_beacon(hdr->frame_control)) { 367 struct iwl_fw_dbg_trigger_tlv *trig; 368 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; 369 bool trig_check; 370 s32 rssi; 371 372 trig = iwl_fw_dbg_get_trigger(mvm->fw, 373 FW_DBG_TRIGGER_RSSI); 374 rssi_trig = (void *)trig->data; 375 rssi = le32_to_cpu(rssi_trig->rssi); 376 377 trig_check = 378 iwl_fw_dbg_trigger_check_stop(mvm, mvmsta->vif, 379 trig); 380 if (trig_check && rx_status->signal < rssi) 381 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL); 382 } 383 384 if (ieee80211_is_data(hdr->frame_control)) 385 iwl_mvm_rx_csum(sta, skb, rx_pkt_status); 386 } 387 rcu_read_unlock(); 388 389 /* set the preamble flag if appropriate */ 390 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE)) 391 rx_status->flag |= RX_FLAG_SHORTPRE; 392 393 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { 394 /* 395 * We know which subframes of an A-MPDU belong 396 * together since we get a single PHY response 397 * from the firmware for all of them 398 */ 399 rx_status->flag |= RX_FLAG_AMPDU_DETAILS; 400 rx_status->ampdu_reference = mvm->ampdu_ref; 401 } 402 403 /* Set up the HT phy flags */ 404 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 405 case RATE_MCS_CHAN_WIDTH_20: 406 break; 407 case RATE_MCS_CHAN_WIDTH_40: 408 rx_status->flag |= RX_FLAG_40MHZ; 409 break; 410 case RATE_MCS_CHAN_WIDTH_80: 411 rx_status->vht_flag |= RX_VHT_FLAG_80MHZ; 412 break; 413 case RATE_MCS_CHAN_WIDTH_160: 414 rx_status->vht_flag |= RX_VHT_FLAG_160MHZ; 415 break; 416 } 417 if (rate_n_flags & RATE_MCS_SGI_MSK) 418 rx_status->flag |= RX_FLAG_SHORT_GI; 419 if (rate_n_flags & RATE_HT_MCS_GF_MSK) 420 rx_status->flag |= RX_FLAG_HT_GF; 421 if (rate_n_flags & RATE_MCS_LDPC_MSK) 422 rx_status->flag |= RX_FLAG_LDPC; 423 if (rate_n_flags & RATE_MCS_HT_MSK) { 424 u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >> 425 RATE_MCS_STBC_POS; 426 rx_status->flag |= RX_FLAG_HT; 427 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; 428 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; 429 } else if (rate_n_flags & RATE_MCS_VHT_MSK) { 430 u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >> 431 RATE_MCS_STBC_POS; 432 rx_status->vht_nss = 433 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> 434 RATE_VHT_MCS_NSS_POS) + 1; 435 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; 436 rx_status->flag |= RX_FLAG_VHT; 437 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; 438 if (rate_n_flags & RATE_MCS_BF_MSK) 439 rx_status->vht_flag |= RX_VHT_FLAG_BF; 440 } else { 441 rx_status->rate_idx = 442 iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, 443 rx_status->band); 444 } 445 446 #ifdef CONFIG_IWLWIFI_DEBUGFS 447 iwl_mvm_update_frame_stats(mvm, rate_n_flags, 448 rx_status->flag & RX_FLAG_AMPDU_DETAILS); 449 #endif 450 451 if (unlikely((ieee80211_is_beacon(hdr->frame_control) || 452 ieee80211_is_probe_resp(hdr->frame_control)) && 453 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)) 454 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; 455 456 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, hdr, len, ampdu_status, 457 crypt_len, rxb); 458 } 459 460 static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm, 461 struct mvm_statistics_rx *rx_stats) 462 { 463 lockdep_assert_held(&mvm->mutex); 464 465 mvm->rx_stats = *rx_stats; 466 } 467 468 struct iwl_mvm_stat_data { 469 struct iwl_mvm *mvm; 470 __le32 mac_id; 471 u8 beacon_filter_average_energy; 472 struct mvm_statistics_general_v8 *general; 473 }; 474 475 static void iwl_mvm_stat_iterator(void *_data, u8 *mac, 476 struct ieee80211_vif *vif) 477 { 478 struct iwl_mvm_stat_data *data = _data; 479 struct iwl_mvm *mvm = data->mvm; 480 int sig = -data->beacon_filter_average_energy; 481 int last_event; 482 int thold = vif->bss_conf.cqm_rssi_thold; 483 int hyst = vif->bss_conf.cqm_rssi_hyst; 484 u16 id = le32_to_cpu(data->mac_id); 485 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 486 487 /* This doesn't need the MAC ID check since it's not taking the 488 * data copied into the "data" struct, but rather the data from 489 * the notification directly. 490 */ 491 if (data->general) { 492 mvmvif->beacon_stats.num_beacons = 493 le32_to_cpu(data->general->beacon_counter[mvmvif->id]); 494 mvmvif->beacon_stats.avg_signal = 495 -data->general->beacon_average_energy[mvmvif->id]; 496 } 497 498 if (mvmvif->id != id) 499 return; 500 501 if (vif->type != NL80211_IFTYPE_STATION) 502 return; 503 504 if (sig == 0) { 505 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n"); 506 return; 507 } 508 509 mvmvif->bf_data.ave_beacon_signal = sig; 510 511 /* BT Coex */ 512 if (mvmvif->bf_data.bt_coex_min_thold != 513 mvmvif->bf_data.bt_coex_max_thold) { 514 last_event = mvmvif->bf_data.last_bt_coex_event; 515 if (sig > mvmvif->bf_data.bt_coex_max_thold && 516 (last_event <= mvmvif->bf_data.bt_coex_min_thold || 517 last_event == 0)) { 518 mvmvif->bf_data.last_bt_coex_event = sig; 519 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", 520 sig); 521 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); 522 } else if (sig < mvmvif->bf_data.bt_coex_min_thold && 523 (last_event >= mvmvif->bf_data.bt_coex_max_thold || 524 last_event == 0)) { 525 mvmvif->bf_data.last_bt_coex_event = sig; 526 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", 527 sig); 528 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); 529 } 530 } 531 532 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 533 return; 534 535 /* CQM Notification */ 536 last_event = mvmvif->bf_data.last_cqm_event; 537 if (thold && sig < thold && (last_event == 0 || 538 sig < last_event - hyst)) { 539 mvmvif->bf_data.last_cqm_event = sig; 540 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", 541 sig); 542 ieee80211_cqm_rssi_notify( 543 vif, 544 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 545 GFP_KERNEL); 546 } else if (sig > thold && 547 (last_event == 0 || sig > last_event + hyst)) { 548 mvmvif->bf_data.last_cqm_event = sig; 549 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", 550 sig); 551 ieee80211_cqm_rssi_notify( 552 vif, 553 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 554 GFP_KERNEL); 555 } 556 } 557 558 static inline void 559 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) 560 { 561 struct iwl_fw_dbg_trigger_tlv *trig; 562 struct iwl_fw_dbg_trigger_stats *trig_stats; 563 u32 trig_offset, trig_thold; 564 565 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_STATS)) 566 return; 567 568 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_STATS); 569 trig_stats = (void *)trig->data; 570 571 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) 572 return; 573 574 trig_offset = le32_to_cpu(trig_stats->stop_offset); 575 trig_thold = le32_to_cpu(trig_stats->stop_threshold); 576 577 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt))) 578 return; 579 580 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold) 581 return; 582 583 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL); 584 } 585 586 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, 587 struct iwl_rx_packet *pkt) 588 { 589 struct iwl_notif_statistics_v10 *stats = (void *)&pkt->data; 590 struct iwl_mvm_stat_data data = { 591 .mvm = mvm, 592 }; 593 u32 temperature; 594 595 if (iwl_rx_packet_payload_len(pkt) != sizeof(*stats)) 596 goto invalid; 597 598 temperature = le32_to_cpu(stats->general.radio_temperature); 599 data.mac_id = stats->rx.general.mac_id; 600 data.beacon_filter_average_energy = 601 stats->general.beacon_filter_average_energy; 602 603 iwl_mvm_update_rx_statistics(mvm, &stats->rx); 604 605 mvm->radio_stats.rx_time = le64_to_cpu(stats->general.rx_time); 606 mvm->radio_stats.tx_time = le64_to_cpu(stats->general.tx_time); 607 mvm->radio_stats.on_time_rf = 608 le64_to_cpu(stats->general.on_time_rf); 609 mvm->radio_stats.on_time_scan = 610 le64_to_cpu(stats->general.on_time_scan); 611 612 data.general = &stats->general; 613 614 iwl_mvm_rx_stats_check_trigger(mvm, pkt); 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 } 625 626 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 627 { 628 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb)); 629 } 630 631 void iwl_mvm_window_status_notif(struct iwl_mvm *mvm, 632 struct iwl_rx_cmd_buffer *rxb) 633 { 634 struct iwl_rx_packet *pkt = rxb_addr(rxb); 635 struct iwl_ba_window_status_notif *notif = (void *)pkt->data; 636 int i; 637 u32 pkt_len = iwl_rx_packet_payload_len(pkt); 638 639 if (WARN_ONCE(pkt_len != sizeof(*notif), 640 "Received window status notification of wrong size (%u)\n", 641 pkt_len)) 642 return; 643 644 rcu_read_lock(); 645 for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) { 646 struct ieee80211_sta *sta; 647 u8 sta_id, tid; 648 u64 bitmap; 649 u32 ssn; 650 u16 ratid; 651 u16 received_mpdu; 652 653 ratid = le16_to_cpu(notif->ra_tid[i]); 654 /* check that this TID is valid */ 655 if (!(ratid & BA_WINDOW_STATUS_VALID_MSK)) 656 continue; 657 658 received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]); 659 if (received_mpdu == 0) 660 continue; 661 662 tid = ratid & BA_WINDOW_STATUS_TID_MSK; 663 /* get the station */ 664 sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK) 665 >> BA_WINDOW_STATUS_STA_ID_POS; 666 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 667 if (IS_ERR_OR_NULL(sta)) 668 continue; 669 bitmap = le64_to_cpu(notif->bitmap[i]); 670 ssn = le32_to_cpu(notif->start_seq_num[i]); 671 672 /* update mac80211 with the bitmap for the reordering buffer */ 673 ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap, 674 received_mpdu); 675 } 676 rcu_read_unlock(); 677 } 678