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) 2015 - 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 * The full GNU General Public License is included in this distribution 22 * in the file called COPYING. 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 * BSD LICENSE 29 * 30 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 31 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 32 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 39 * * Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * * Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in 43 * the documentation and/or other materials provided with the 44 * distribution. 45 * * Neither the name Intel Corporation nor the names of its 46 * contributors may be used to endorse or promote products derived 47 * from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 *****************************************************************************/ 61 #include <linux/etherdevice.h> 62 #include <linux/skbuff.h> 63 #include "iwl-trans.h" 64 #include "mvm.h" 65 #include "fw-api.h" 66 #include "fw-dbg.h" 67 68 void iwl_mvm_rx_phy_cmd_mq(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 69 { 70 mvm->ampdu_ref++; 71 72 #ifdef CONFIG_IWLWIFI_DEBUGFS 73 if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { 74 spin_lock(&mvm->drv_stats_lock); 75 mvm->drv_rx_stats.ampdu_count++; 76 spin_unlock(&mvm->drv_stats_lock); 77 } 78 #endif 79 } 80 81 static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb, 82 int queue, struct ieee80211_sta *sta) 83 { 84 struct iwl_mvm_sta *mvmsta; 85 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 86 struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb); 87 struct iwl_mvm_key_pn *ptk_pn; 88 u8 tid, keyidx; 89 u8 pn[IEEE80211_CCMP_PN_LEN]; 90 u8 *extiv; 91 92 /* do PN checking */ 93 94 /* multicast and non-data only arrives on default queue */ 95 if (!ieee80211_is_data(hdr->frame_control) || 96 is_multicast_ether_addr(hdr->addr1)) 97 return 0; 98 99 /* do not check PN for open AP */ 100 if (!(stats->flag & RX_FLAG_DECRYPTED)) 101 return 0; 102 103 /* 104 * avoid checking for default queue - we don't want to replicate 105 * all the logic that's necessary for checking the PN on fragmented 106 * frames, leave that to mac80211 107 */ 108 if (queue == 0) 109 return 0; 110 111 /* if we are here - this for sure is either CCMP or GCMP */ 112 if (IS_ERR_OR_NULL(sta)) { 113 IWL_ERR(mvm, 114 "expected hw-decrypted unicast frame for station\n"); 115 return -1; 116 } 117 118 mvmsta = iwl_mvm_sta_from_mac80211(sta); 119 120 extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); 121 keyidx = extiv[3] >> 6; 122 123 ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]); 124 if (!ptk_pn) 125 return -1; 126 127 if (ieee80211_is_data_qos(hdr->frame_control)) 128 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK; 129 else 130 tid = 0; 131 132 /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */ 133 if (tid >= IWL_MAX_TID_COUNT) 134 return -1; 135 136 /* load pn */ 137 pn[0] = extiv[7]; 138 pn[1] = extiv[6]; 139 pn[2] = extiv[5]; 140 pn[3] = extiv[4]; 141 pn[4] = extiv[1]; 142 pn[5] = extiv[0]; 143 144 if (memcmp(pn, ptk_pn->q[queue].pn[tid], 145 IEEE80211_CCMP_PN_LEN) <= 0) 146 return -1; 147 148 memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN); 149 stats->flag |= RX_FLAG_PN_VALIDATED; 150 151 return 0; 152 } 153 154 /* iwl_mvm_create_skb Adds the rxb to a new skb */ 155 static void iwl_mvm_create_skb(struct sk_buff *skb, struct ieee80211_hdr *hdr, 156 u16 len, u8 crypt_len, 157 struct iwl_rx_cmd_buffer *rxb) 158 { 159 struct iwl_rx_packet *pkt = rxb_addr(rxb); 160 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; 161 unsigned int headlen, fraglen, pad_len = 0; 162 unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); 163 164 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) 165 pad_len = 2; 166 len -= pad_len; 167 168 /* If frame is small enough to fit in skb->head, pull it completely. 169 * If not, only pull ieee80211_hdr (including crypto if present, and 170 * an additional 8 bytes for SNAP/ethertype, see below) so that 171 * splice() or TCP coalesce are more efficient. 172 * 173 * Since, in addition, ieee80211_data_to_8023() always pull in at 174 * least 8 bytes (possibly more for mesh) we can do the same here 175 * to save the cost of doing it later. That still doesn't pull in 176 * the actual IP header since the typical case has a SNAP header. 177 * If the latter changes (there are efforts in the standards group 178 * to do so) we should revisit this and ieee80211_data_to_8023(). 179 */ 180 headlen = (len <= skb_tailroom(skb)) ? len : 181 hdrlen + crypt_len + 8; 182 183 /* The firmware may align the packet to DWORD. 184 * The padding is inserted after the IV. 185 * After copying the header + IV skip the padding if 186 * present before copying packet data. 187 */ 188 hdrlen += crypt_len; 189 memcpy(skb_put(skb, hdrlen), hdr, hdrlen); 190 memcpy(skb_put(skb, headlen - hdrlen), (u8 *)hdr + hdrlen + pad_len, 191 headlen - hdrlen); 192 193 fraglen = len - headlen; 194 195 if (fraglen) { 196 int offset = (void *)hdr + headlen + pad_len - 197 rxb_addr(rxb) + rxb_offset(rxb); 198 199 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, 200 fraglen, rxb->truesize); 201 } 202 } 203 204 /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */ 205 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, 206 struct napi_struct *napi, 207 struct sk_buff *skb, int queue, 208 struct ieee80211_sta *sta) 209 { 210 if (iwl_mvm_check_pn(mvm, skb, queue, sta)) 211 kfree_skb(skb); 212 else 213 ieee80211_rx_napi(mvm->hw, skb, napi); 214 } 215 216 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, 217 struct iwl_rx_mpdu_desc *desc, 218 struct ieee80211_rx_status *rx_status) 219 { 220 int energy_a, energy_b, max_energy; 221 222 energy_a = desc->energy_a; 223 energy_a = energy_a ? -energy_a : S8_MIN; 224 energy_b = desc->energy_b; 225 energy_b = energy_b ? -energy_b : S8_MIN; 226 max_energy = max(energy_a, energy_b); 227 228 IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n", 229 energy_a, energy_b, max_energy); 230 231 rx_status->signal = max_energy; 232 rx_status->chains = 0; /* TODO: phy info */ 233 rx_status->chain_signal[0] = energy_a; 234 rx_status->chain_signal[1] = energy_b; 235 rx_status->chain_signal[2] = S8_MIN; 236 } 237 238 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, 239 struct ieee80211_rx_status *stats, 240 struct iwl_rx_mpdu_desc *desc, int queue, 241 u8 *crypt_len) 242 { 243 u16 status = le16_to_cpu(desc->status); 244 245 if (!ieee80211_has_protected(hdr->frame_control) || 246 (status & IWL_RX_MPDU_STATUS_SEC_MASK) == 247 IWL_RX_MPDU_STATUS_SEC_NONE) 248 return 0; 249 250 /* TODO: handle packets encrypted with unknown alg */ 251 252 switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) { 253 case IWL_RX_MPDU_STATUS_SEC_CCM: 254 case IWL_RX_MPDU_STATUS_SEC_GCM: 255 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN); 256 /* alg is CCM: check MIC only */ 257 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) 258 return -1; 259 260 stats->flag |= RX_FLAG_DECRYPTED; 261 *crypt_len = IEEE80211_CCMP_HDR_LEN; 262 return 0; 263 case IWL_RX_MPDU_STATUS_SEC_TKIP: 264 /* Don't drop the frame and decrypt it in SW */ 265 if (!(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK)) 266 return 0; 267 268 *crypt_len = IEEE80211_TKIP_IV_LEN; 269 /* fall through if TTAK OK */ 270 case IWL_RX_MPDU_STATUS_SEC_WEP: 271 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK)) 272 return -1; 273 274 stats->flag |= RX_FLAG_DECRYPTED; 275 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == 276 IWL_RX_MPDU_STATUS_SEC_WEP) 277 *crypt_len = IEEE80211_WEP_IV_LEN; 278 return 0; 279 case IWL_RX_MPDU_STATUS_SEC_EXT_ENC: 280 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) 281 return -1; 282 stats->flag |= RX_FLAG_DECRYPTED; 283 return 0; 284 default: 285 IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status); 286 } 287 288 return 0; 289 } 290 291 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta, 292 struct sk_buff *skb, 293 struct iwl_rx_mpdu_desc *desc) 294 { 295 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); 297 298 if (mvmvif->features & NETIF_F_RXCSUM && 299 desc->l3l4_flags & cpu_to_le16(IWL_RX_L3L4_IP_HDR_CSUM_OK) && 300 desc->l3l4_flags & cpu_to_le16(IWL_RX_L3L4_TCP_UDP_CSUM_OK)) 301 skb->ip_summed = CHECKSUM_UNNECESSARY; 302 } 303 304 /* 305 * returns true if a packet outside BA session is a duplicate and 306 * should be dropped 307 */ 308 static bool iwl_mvm_is_nonagg_dup(struct ieee80211_sta *sta, int queue, 309 struct ieee80211_rx_status *rx_status, 310 struct ieee80211_hdr *hdr, 311 struct iwl_rx_mpdu_desc *desc) 312 { 313 struct iwl_mvm_sta *mvm_sta; 314 struct iwl_mvm_rxq_dup_data *dup_data; 315 u8 baid, tid, sub_frame_idx; 316 317 if (WARN_ON(IS_ERR_OR_NULL(sta))) 318 return false; 319 320 baid = (le32_to_cpu(desc->reorder_data) & 321 IWL_RX_MPDU_REORDER_BAID_MASK) >> 322 IWL_RX_MPDU_REORDER_BAID_SHIFT; 323 324 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) 325 return false; 326 327 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 328 dup_data = &mvm_sta->dup_data[queue]; 329 330 /* 331 * Drop duplicate 802.11 retransmissions 332 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery") 333 */ 334 if (ieee80211_is_ctl(hdr->frame_control) || 335 ieee80211_is_qos_nullfunc(hdr->frame_control) || 336 is_multicast_ether_addr(hdr->addr1)) { 337 rx_status->flag |= RX_FLAG_DUP_VALIDATED; 338 return false; 339 } 340 341 if (ieee80211_is_data_qos(hdr->frame_control)) 342 /* frame has qos control */ 343 tid = *ieee80211_get_qos_ctl(hdr) & 344 IEEE80211_QOS_CTL_TID_MASK; 345 else 346 tid = IWL_MAX_TID_COUNT; 347 348 /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */ 349 sub_frame_idx = desc->amsdu_info & IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; 350 351 if (unlikely(ieee80211_has_retry(hdr->frame_control) && 352 dup_data->last_seq[tid] == hdr->seq_ctrl && 353 dup_data->last_sub_frame[tid] >= sub_frame_idx)) 354 return true; 355 356 dup_data->last_seq[tid] = hdr->seq_ctrl; 357 dup_data->last_sub_frame[tid] = sub_frame_idx; 358 359 rx_status->flag |= RX_FLAG_DUP_VALIDATED; 360 361 return false; 362 } 363 364 int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask, 365 const u8 *data, u32 count) 366 { 367 struct iwl_rxq_sync_cmd *cmd; 368 u32 data_size = sizeof(*cmd) + count; 369 int ret; 370 371 /* should be DWORD aligned */ 372 if (WARN_ON(count & 3 || count > IWL_MULTI_QUEUE_SYNC_MSG_MAX_SIZE)) 373 return -EINVAL; 374 375 cmd = kzalloc(data_size, GFP_KERNEL); 376 if (!cmd) 377 return -ENOMEM; 378 379 cmd->rxq_mask = cpu_to_le32(rxq_mask); 380 cmd->count = cpu_to_le32(count); 381 cmd->flags = 0; 382 memcpy(cmd->payload, data, count); 383 384 ret = iwl_mvm_send_cmd_pdu(mvm, 385 WIDE_ID(DATA_PATH_GROUP, 386 TRIGGER_RX_QUEUES_NOTIF_CMD), 387 0, data_size, cmd); 388 389 kfree(cmd); 390 return ret; 391 } 392 393 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, 394 int queue) 395 { 396 struct iwl_rx_packet *pkt = rxb_addr(rxb); 397 struct iwl_rxq_sync_notification *notif; 398 struct iwl_mvm_internal_rxq_notif *internal_notif; 399 400 notif = (void *)pkt->data; 401 internal_notif = (void *)notif->payload; 402 403 switch (internal_notif->type) { 404 case IWL_MVM_RXQ_NOTIF_DEL_BA: 405 /* TODO */ 406 break; 407 default: 408 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type); 409 } 410 } 411 412 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, 413 struct iwl_rx_cmd_buffer *rxb, int queue) 414 { 415 struct ieee80211_rx_status *rx_status; 416 struct iwl_rx_packet *pkt = rxb_addr(rxb); 417 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; 418 struct ieee80211_hdr *hdr = (void *)(pkt->data + sizeof(*desc)); 419 u32 len = le16_to_cpu(desc->mpdu_len); 420 u32 rate_n_flags = le32_to_cpu(desc->rate_n_flags); 421 struct ieee80211_sta *sta = NULL; 422 struct sk_buff *skb; 423 u8 crypt_len = 0; 424 425 /* Dont use dev_alloc_skb(), we'll have enough headroom once 426 * ieee80211_hdr pulled. 427 */ 428 skb = alloc_skb(128, GFP_ATOMIC); 429 if (!skb) { 430 IWL_ERR(mvm, "alloc_skb failed\n"); 431 return; 432 } 433 434 rx_status = IEEE80211_SKB_RXCB(skb); 435 436 if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, desc, queue, &crypt_len)) { 437 kfree_skb(skb); 438 return; 439 } 440 441 /* 442 * Keep packets with CRC errors (and with overrun) for monitor mode 443 * (otherwise the firmware discards them) but mark them as bad. 444 */ 445 if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) || 446 !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) { 447 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", 448 le16_to_cpu(desc->status)); 449 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; 450 } 451 452 rx_status->mactime = le64_to_cpu(desc->tsf_on_air_rise); 453 rx_status->device_timestamp = le32_to_cpu(desc->gp2_on_air_rise); 454 rx_status->band = desc->channel > 14 ? IEEE80211_BAND_5GHZ : 455 IEEE80211_BAND_2GHZ; 456 rx_status->freq = ieee80211_channel_to_frequency(desc->channel, 457 rx_status->band); 458 iwl_mvm_get_signal_strength(mvm, desc, rx_status); 459 /* TSF as indicated by the firmware is at INA time */ 460 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; 461 462 rcu_read_lock(); 463 464 if (le16_to_cpu(desc->status) & IWL_RX_MPDU_STATUS_SRC_STA_FOUND) { 465 u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK; 466 467 if (!WARN_ON_ONCE(id >= IWL_MVM_STATION_COUNT)) { 468 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); 469 if (IS_ERR(sta)) 470 sta = NULL; 471 } 472 } else if (!is_multicast_ether_addr(hdr->addr2)) { 473 /* 474 * This is fine since we prevent two stations with the same 475 * address from being added. 476 */ 477 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); 478 } 479 480 if (sta) { 481 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 482 483 /* 484 * We have tx blocked stations (with CS bit). If we heard 485 * frames from a blocked station on a new channel we can 486 * TX to it again. 487 */ 488 if (unlikely(mvm->csa_tx_block_bcn_timeout)) 489 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false); 490 491 rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status); 492 493 if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) && 494 ieee80211_is_beacon(hdr->frame_control)) { 495 struct iwl_fw_dbg_trigger_tlv *trig; 496 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; 497 bool trig_check; 498 s32 rssi; 499 500 trig = iwl_fw_dbg_get_trigger(mvm->fw, 501 FW_DBG_TRIGGER_RSSI); 502 rssi_trig = (void *)trig->data; 503 rssi = le32_to_cpu(rssi_trig->rssi); 504 505 trig_check = 506 iwl_fw_dbg_trigger_check_stop(mvm, mvmsta->vif, 507 trig); 508 if (trig_check && rx_status->signal < rssi) 509 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL); 510 } 511 512 /* TODO: multi queue TCM */ 513 514 if (ieee80211_is_data(hdr->frame_control)) 515 iwl_mvm_rx_csum(sta, skb, desc); 516 517 if (iwl_mvm_is_nonagg_dup(sta, queue, rx_status, hdr, desc)) { 518 kfree_skb(skb); 519 rcu_read_unlock(); 520 return; 521 } 522 523 /* 524 * Our hardware de-aggregates AMSDUs but copies the mac header 525 * as it to the de-aggregated MPDUs. We need to turn off the 526 * AMSDU bit in the QoS control ourselves. 527 */ 528 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) && 529 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) { 530 u8 *qc = ieee80211_get_qos_ctl(hdr); 531 532 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; 533 } 534 } 535 536 /* 537 * TODO: PHY info. 538 * Verify we don't have the information in the MPDU descriptor and 539 * that it is not needed. 540 * Make sure for monitor mode that we are on default queue, update 541 * ampdu_ref and the rest of phy info then 542 */ 543 544 /* Set up the HT phy flags */ 545 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 546 case RATE_MCS_CHAN_WIDTH_20: 547 break; 548 case RATE_MCS_CHAN_WIDTH_40: 549 rx_status->flag |= RX_FLAG_40MHZ; 550 break; 551 case RATE_MCS_CHAN_WIDTH_80: 552 rx_status->vht_flag |= RX_VHT_FLAG_80MHZ; 553 break; 554 case RATE_MCS_CHAN_WIDTH_160: 555 rx_status->vht_flag |= RX_VHT_FLAG_160MHZ; 556 break; 557 } 558 if (rate_n_flags & RATE_MCS_SGI_MSK) 559 rx_status->flag |= RX_FLAG_SHORT_GI; 560 if (rate_n_flags & RATE_HT_MCS_GF_MSK) 561 rx_status->flag |= RX_FLAG_HT_GF; 562 if (rate_n_flags & RATE_MCS_LDPC_MSK) 563 rx_status->flag |= RX_FLAG_LDPC; 564 if (rate_n_flags & RATE_MCS_HT_MSK) { 565 u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >> 566 RATE_MCS_STBC_POS; 567 rx_status->flag |= RX_FLAG_HT; 568 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; 569 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; 570 } else if (rate_n_flags & RATE_MCS_VHT_MSK) { 571 u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >> 572 RATE_MCS_STBC_POS; 573 rx_status->vht_nss = 574 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> 575 RATE_VHT_MCS_NSS_POS) + 1; 576 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; 577 rx_status->flag |= RX_FLAG_VHT; 578 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; 579 if (rate_n_flags & RATE_MCS_BF_MSK) 580 rx_status->vht_flag |= RX_VHT_FLAG_BF; 581 } else { 582 rx_status->rate_idx = 583 iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, 584 rx_status->band); 585 } 586 587 /* TODO: PHY info - update ampdu queue statistics (for debugfs) */ 588 /* TODO: PHY info - gscan */ 589 590 iwl_mvm_create_skb(skb, hdr, len, crypt_len, rxb); 591 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta); 592 rcu_read_unlock(); 593 } 594 595 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, 596 struct iwl_rx_cmd_buffer *rxb, int queue) 597 { 598 /* TODO */ 599 } 600