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  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 *
 10 * This program is free software; you can redistribute it and/or modify
 11 * it under the terms of version 2 of the GNU General Public License as
 12 * published by the Free Software Foundation.
 13 *
 14 * This program is distributed in the hope that it will be useful, but
 15 * WITHOUT ANY WARRANTY; without even the implied warranty of
 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 17 * General Public License for more details.
 18 *
 19 * You should have received a copy of the GNU General Public License
 20 * along with this program; if not, write to the Free Software
 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 22 * USA
 23 *
 24 * The full GNU General Public License is included in this distribution
 25 * in the file called COPYING.
 26 *
 27 * Contact Information:
 28 *  Intel Linux Wireless <ilw@linux.intel.com>
 29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 30 *
 31 * BSD LICENSE
 32 *
 33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 34 * All rights reserved.
 35 *
 36 * Redistribution and use in source and binary forms, with or without
 37 * modification, are permitted provided that the following conditions
 38 * are met:
 39 *
 40 *  * Redistributions of source code must retain the above copyright
 41 *    notice, this list of conditions and the following disclaimer.
 42 *  * Redistributions in binary form must reproduce the above copyright
 43 *    notice, this list of conditions and the following disclaimer in
 44 *    the documentation and/or other materials provided with the
 45 *    distribution.
 46 *  * Neither the name Intel Corporation nor the names of its
 47 *    contributors may be used to endorse or promote products derived
 48 *    from this software without specific prior written permission.
 49 *
 50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 61 *****************************************************************************/
 62#include "iwl-trans.h"
 63
 64#include "mvm.h"
 65#include "fw-api.h"
 66
 67/*
 68 * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler
 69 *
 70 * Copies the phy information in mvm->last_phy_info, it will be used when the
 71 * actual data will come from the fw in the next packet.
 72 */
 73int iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 74			  struct iwl_device_cmd *cmd)
 75{
 76	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 77
 78	memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info));
 79	mvm->ampdu_ref++;
 80
 81#ifdef CONFIG_IWLWIFI_DEBUGFS
 82	if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
 83		spin_lock(&mvm->drv_stats_lock);
 84		mvm->drv_rx_stats.ampdu_count++;
 85		spin_unlock(&mvm->drv_stats_lock);
 86	}
 87#endif
 88
 89	return 0;
 90}
 91
 92/*
 93 * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211
 94 *
 95 * Adds the rxb to a new skb and give it to mac80211
 96 */
 97static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
 98					    struct ieee80211_hdr *hdr, u16 len,
 99					    u32 ampdu_status,
100					    struct iwl_rx_cmd_buffer *rxb,
101					    struct ieee80211_rx_status *stats)
102{
103	struct sk_buff *skb;
104	unsigned int hdrlen, fraglen;
105
106	/* Dont use dev_alloc_skb(), we'll have enough headroom once
107	 * ieee80211_hdr pulled.
108	 */
109	skb = alloc_skb(128, GFP_ATOMIC);
110	if (!skb) {
111		IWL_ERR(mvm, "alloc_skb failed\n");
112		return;
113	}
114	/* If frame is small enough to fit in skb->head, pull it completely.
115	 * If not, only pull ieee80211_hdr so that splice() or TCP coalesce
116	 * are more efficient.
117	 */
118	hdrlen = (len <= skb_tailroom(skb)) ? len : sizeof(*hdr);
119
120	memcpy(skb_put(skb, hdrlen), hdr, hdrlen);
121	fraglen = len - hdrlen;
122
123	if (fraglen) {
124		int offset = (void *)hdr + hdrlen -
125			     rxb_addr(rxb) + rxb_offset(rxb);
126
127		skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
128				fraglen, rxb->truesize);
129	}
130
131	memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
132
133	ieee80211_rx_ni(mvm->hw, skb);
134}
135
136static void iwl_mvm_calc_rssi(struct iwl_mvm *mvm,
137			      struct iwl_rx_phy_info *phy_info,
138			      struct ieee80211_rx_status *rx_status)
139{
140	int rssi_a, rssi_b, rssi_a_dbm, rssi_b_dbm, max_rssi_dbm;
141	u32 agc_a, agc_b;
142	u32 val;
143
144	val = le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_AGC_IDX]);
145	agc_a = (val & IWL_OFDM_AGC_A_MSK) >> IWL_OFDM_AGC_A_POS;
146	agc_b = (val & IWL_OFDM_AGC_B_MSK) >> IWL_OFDM_AGC_B_POS;
147
148	val = le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_RSSI_AB_IDX]);
149	rssi_a = (val & IWL_OFDM_RSSI_INBAND_A_MSK) >> IWL_OFDM_RSSI_A_POS;
150	rssi_b = (val & IWL_OFDM_RSSI_INBAND_B_MSK) >> IWL_OFDM_RSSI_B_POS;
151
152	/*
153	 * dBm = rssi dB - agc dB - constant.
154	 * Higher AGC (higher radio gain) means lower signal.
155	 */
156	rssi_a_dbm = rssi_a - IWL_RSSI_OFFSET - agc_a;
157	rssi_b_dbm = rssi_b - IWL_RSSI_OFFSET - agc_b;
158	max_rssi_dbm = max_t(int, rssi_a_dbm, rssi_b_dbm);
159
160	IWL_DEBUG_STATS(mvm, "Rssi In A %d B %d Max %d AGCA %d AGCB %d\n",
161			rssi_a_dbm, rssi_b_dbm, max_rssi_dbm, agc_a, agc_b);
162
163	rx_status->signal = max_rssi_dbm;
164	rx_status->chains = (le16_to_cpu(phy_info->phy_flags) &
165				RX_RES_PHY_FLAGS_ANTENNA)
166					>> RX_RES_PHY_FLAGS_ANTENNA_POS;
167	rx_status->chain_signal[0] = rssi_a_dbm;
168	rx_status->chain_signal[1] = rssi_b_dbm;
169}
170
171/*
172 * iwl_mvm_get_signal_strength - use new rx PHY INFO API
173 * values are reported by the fw as positive values - need to negate
174 * to obtain their dBM.  Account for missing antennas by replacing 0
175 * values by -256dBm: practically 0 power and a non-feasible 8 bit value.
176 */
177static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
178					struct iwl_rx_phy_info *phy_info,
179					struct ieee80211_rx_status *rx_status)
180{
181	int energy_a, energy_b, energy_c, max_energy;
182	u32 val;
183
184	val =
185	    le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]);
186	energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >>
187						IWL_RX_INFO_ENERGY_ANT_A_POS;
188	energy_a = energy_a ? -energy_a : -256;
189	energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >>
190						IWL_RX_INFO_ENERGY_ANT_B_POS;
191	energy_b = energy_b ? -energy_b : -256;
192	energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >>
193						IWL_RX_INFO_ENERGY_ANT_C_POS;
194	energy_c = energy_c ? -energy_c : -256;
195	max_energy = max(energy_a, energy_b);
196	max_energy = max(max_energy, energy_c);
197
198	IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n",
199			energy_a, energy_b, energy_c, max_energy);
200
201	rx_status->signal = max_energy;
202	rx_status->chains = (le16_to_cpu(phy_info->phy_flags) &
203				RX_RES_PHY_FLAGS_ANTENNA)
204					>> RX_RES_PHY_FLAGS_ANTENNA_POS;
205	rx_status->chain_signal[0] = energy_a;
206	rx_status->chain_signal[1] = energy_b;
207	rx_status->chain_signal[2] = energy_c;
208}
209
210/*
211 * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format
212 * @mvm: the mvm object
213 * @hdr: 80211 header
214 * @stats: status in mac80211's format
215 * @rx_pkt_status: status coming from fw
216 *
217 * returns non 0 value if the packet should be dropped
218 */
219static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm,
220					struct ieee80211_hdr *hdr,
221					struct ieee80211_rx_status *stats,
222					u32 rx_pkt_status)
223{
224	if (!ieee80211_has_protected(hdr->frame_control) ||
225	    (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
226			     RX_MPDU_RES_STATUS_SEC_NO_ENC)
227		return 0;
228
229	/* packet was encrypted with unknown alg */
230	if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
231					RX_MPDU_RES_STATUS_SEC_ENC_ERR)
232		return 0;
233
234	switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) {
235	case RX_MPDU_RES_STATUS_SEC_CCM_ENC:
236		/* alg is CCM: check MIC only */
237		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
238			return -1;
239
240		stats->flag |= RX_FLAG_DECRYPTED;
241		IWL_DEBUG_WEP(mvm, "hw decrypted CCMP successfully\n");
242		return 0;
243
244	case RX_MPDU_RES_STATUS_SEC_TKIP_ENC:
245		/* Don't drop the frame and decrypt it in SW */
246		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK))
247			return 0;
248		/* fall through if TTAK OK */
249
250	case RX_MPDU_RES_STATUS_SEC_WEP_ENC:
251		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK))
252			return -1;
253
254		stats->flag |= RX_FLAG_DECRYPTED;
255		return 0;
256
257	case RX_MPDU_RES_STATUS_SEC_EXT_ENC:
258		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
259			return -1;
260		stats->flag |= RX_FLAG_DECRYPTED;
261		return 0;
262
263	default:
264		IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
265	}
266
267	return 0;
268}
269
270/*
271 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
272 *
273 * Handles the actual data of the Rx packet from the fw
274 */
275int iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
276		       struct iwl_device_cmd *cmd)
277{
278	struct ieee80211_hdr *hdr;
279	struct ieee80211_rx_status rx_status = {};
280	struct iwl_rx_packet *pkt = rxb_addr(rxb);
281	struct iwl_rx_phy_info *phy_info;
282	struct iwl_rx_mpdu_res_start *rx_res;
283	u32 len;
284	u32 ampdu_status;
285	u32 rate_n_flags;
286	u32 rx_pkt_status;
287
288	phy_info = &mvm->last_phy_info;
289	rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
290	hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
291	len = le16_to_cpu(rx_res->byte_count);
292	rx_pkt_status = le32_to_cpup((__le32 *)
293		(pkt->data + sizeof(*rx_res) + len));
294
295	memset(&rx_status, 0, sizeof(rx_status));
296
297	/*
298	 * drop the packet if it has failed being decrypted by HW
299	 */
300	if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, &rx_status, rx_pkt_status)) {
301		IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
302			       rx_pkt_status);
303		return 0;
304	}
305
306	if ((unlikely(phy_info->cfg_phy_cnt > 20))) {
307		IWL_DEBUG_DROP(mvm, "dsp size out of range [0,20]: %d\n",
308			       phy_info->cfg_phy_cnt);
309		return 0;
310	}
311
312	/*
313	 * Keep packets with CRC errors (and with overrun) for monitor mode
314	 * (otherwise the firmware discards them) but mark them as bad.
315	 */
316	if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
317	    !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
318		IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
319		rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
320	}
321
322	/* This will be used in several places later */
323	rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);
324
325	/* rx_status carries information about the packet to mac80211 */
326	rx_status.mactime = le64_to_cpu(phy_info->timestamp);
327	rx_status.device_timestamp = le32_to_cpu(phy_info->system_timestamp);
328	rx_status.band =
329		(phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
330				IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
331	rx_status.freq =
332		ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
333					       rx_status.band);
334	/*
335	 * TSF as indicated by the fw is at INA time, but mac80211 expects the
336	 * TSF at the beginning of the MPDU.
337	 */
338	/*rx_status.flag |= RX_FLAG_MACTIME_MPDU;*/
339
340	if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_RX_ENERGY_API)
341		iwl_mvm_get_signal_strength(mvm, phy_info, &rx_status);
342	else
343		iwl_mvm_calc_rssi(mvm, phy_info, &rx_status);
344
345	IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status.signal,
346			      (unsigned long long)rx_status.mactime);
347
348	/* set the preamble flag if appropriate */
349	if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
350		rx_status.flag |= RX_FLAG_SHORTPRE;
351
352	if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
353		/*
354		 * We know which subframes of an A-MPDU belong
355		 * together since we get a single PHY response
356		 * from the firmware for all of them
357		 */
358		rx_status.flag |= RX_FLAG_AMPDU_DETAILS;
359		rx_status.ampdu_reference = mvm->ampdu_ref;
360	}
361
362	/* Set up the HT phy flags */
363	switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
364	case RATE_MCS_CHAN_WIDTH_20:
365		break;
366	case RATE_MCS_CHAN_WIDTH_40:
367		rx_status.flag |= RX_FLAG_40MHZ;
368		break;
369	case RATE_MCS_CHAN_WIDTH_80:
370		rx_status.vht_flag |= RX_VHT_FLAG_80MHZ;
371		break;
372	case RATE_MCS_CHAN_WIDTH_160:
373		rx_status.vht_flag |= RX_VHT_FLAG_160MHZ;
374		break;
375	}
376	if (rate_n_flags & RATE_MCS_SGI_MSK)
377		rx_status.flag |= RX_FLAG_SHORT_GI;
378	if (rate_n_flags & RATE_HT_MCS_GF_MSK)
379		rx_status.flag |= RX_FLAG_HT_GF;
380	if (rate_n_flags & RATE_MCS_LDPC_MSK)
381		rx_status.flag |= RX_FLAG_LDPC;
382	if (rate_n_flags & RATE_MCS_HT_MSK) {
383		u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >>
384				RATE_MCS_STBC_POS;
385		rx_status.flag |= RX_FLAG_HT;
386		rx_status.rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
387		rx_status.flag |= stbc << RX_FLAG_STBC_SHIFT;
388	} else if (rate_n_flags & RATE_MCS_VHT_MSK) {
389		u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >>
390				RATE_MCS_STBC_POS;
391		rx_status.vht_nss =
392			((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
393						RATE_VHT_MCS_NSS_POS) + 1;
394		rx_status.rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
395		rx_status.flag |= RX_FLAG_VHT;
396		rx_status.flag |= stbc << RX_FLAG_STBC_SHIFT;
397	} else {
398		rx_status.rate_idx =
399			iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
400							    rx_status.band);
401	}
402
403#ifdef CONFIG_IWLWIFI_DEBUGFS
404	iwl_mvm_update_frame_stats(mvm, &mvm->drv_rx_stats, rate_n_flags,
405				   rx_status.flag & RX_FLAG_AMPDU_DETAILS);
406#endif
407	iwl_mvm_pass_packet_to_mac80211(mvm, hdr, len, ampdu_status,
408					rxb, &rx_status);
409	return 0;
410}
411
412static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm,
413					 struct iwl_notif_statistics *stats)
414{
415	/*
416	 * NOTE FW aggregates the statistics - BUT the statistics are cleared
417	 * when the driver issues REPLY_STATISTICS_CMD 0x9c with CLEAR_STATS
418	 * bit set.
419	 */
420	lockdep_assert_held(&mvm->mutex);
421	memcpy(&mvm->rx_stats, &stats->rx, sizeof(struct mvm_statistics_rx));
422}
423
424struct iwl_mvm_stat_data {
425	struct iwl_notif_statistics *stats;
426	struct iwl_mvm *mvm;
427};
428
429static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
430				  struct ieee80211_vif *vif)
431{
432	struct iwl_mvm_stat_data *data = _data;
433	struct iwl_notif_statistics *stats = data->stats;
434	struct iwl_mvm *mvm = data->mvm;
435	int sig = -stats->general.beacon_filter_average_energy;
436	int last_event;
437	int thold = vif->bss_conf.cqm_rssi_thold;
438	int hyst = vif->bss_conf.cqm_rssi_hyst;
439	u16 id = le32_to_cpu(stats->rx.general.mac_id);
440	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
441
442	if (mvmvif->id != id)
443		return;
444
445	if (vif->type != NL80211_IFTYPE_STATION)
446		return;
447
448	mvmvif->bf_data.ave_beacon_signal = sig;
449
450	/* BT Coex */
451	if (mvmvif->bf_data.bt_coex_min_thold !=
452	    mvmvif->bf_data.bt_coex_max_thold) {
453		last_event = mvmvif->bf_data.last_bt_coex_event;
454		if (sig > mvmvif->bf_data.bt_coex_max_thold &&
455		    (last_event <= mvmvif->bf_data.bt_coex_min_thold ||
456		     last_event == 0)) {
457			mvmvif->bf_data.last_bt_coex_event = sig;
458			IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
459				     sig);
460			iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
461		} else if (sig < mvmvif->bf_data.bt_coex_min_thold &&
462			   (last_event >= mvmvif->bf_data.bt_coex_max_thold ||
463			    last_event == 0)) {
464			mvmvif->bf_data.last_bt_coex_event = sig;
465			IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
466				     sig);
467			iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
468		}
469	}
470
471	if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
472		return;
473
474	/* CQM Notification */
475	last_event = mvmvif->bf_data.last_cqm_event;
476	if (thold && sig < thold && (last_event == 0 ||
477				     sig < last_event - hyst)) {
478		mvmvif->bf_data.last_cqm_event = sig;
479		IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
480			     sig);
481		ieee80211_cqm_rssi_notify(
482			vif,
483			NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
484			GFP_KERNEL);
485	} else if (sig > thold &&
486		   (last_event == 0 || sig > last_event + hyst)) {
487		mvmvif->bf_data.last_cqm_event = sig;
488		IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
489			     sig);
490		ieee80211_cqm_rssi_notify(
491			vif,
492			NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
493			GFP_KERNEL);
494	}
495}
496
497/*
498 * iwl_mvm_rx_statistics - STATISTICS_NOTIFICATION handler
499 *
500 * TODO: This handler is implemented partially.
501 */
502int iwl_mvm_rx_statistics(struct iwl_mvm *mvm,
503			  struct iwl_rx_cmd_buffer *rxb,
504			  struct iwl_device_cmd *cmd)
505{
506	struct iwl_rx_packet *pkt = rxb_addr(rxb);
507	struct iwl_notif_statistics *stats = (void *)&pkt->data;
508	struct mvm_statistics_general_common *common = &stats->general.common;
509	struct iwl_mvm_stat_data data = {
510		.stats = stats,
511		.mvm = mvm,
512	};
513
514	if (mvm->temperature != le32_to_cpu(common->temperature)) {
515		mvm->temperature = le32_to_cpu(common->temperature);
516		iwl_mvm_tt_handler(mvm);
517	}
518	iwl_mvm_update_rx_statistics(mvm, stats);
519
520	ieee80211_iterate_active_interfaces(mvm->hw,
521					    IEEE80211_IFACE_ITER_NORMAL,
522					    iwl_mvm_stat_iterator,
523					    &data);
524	return 0;
525}