[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / rx.c

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
#include "iwl-trans.h"
#include "mvm.h"
#include "fw-api.h"

/*
 * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler
 *
 * Copies the phy information in mvm->last_phy_info, it will be used when the
 * actual data will come from the fw in the next packet.
 */
int iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
			  struct iwl_device_cmd *cmd)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);

	memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info));
	mvm->ampdu_ref++;

#ifdef CONFIG_IWLWIFI_DEBUGFS
	if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
		spin_lock(&mvm->drv_stats_lock);
		mvm->drv_rx_stats.ampdu_count++;
		spin_unlock(&mvm->drv_stats_lock);
	}
#endif

	return 0;
}

/*
 * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211
 *
 * Adds the rxb to a new skb and give it to mac80211
 */
static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
					    struct ieee80211_hdr *hdr, u16 len,
					    u32 ampdu_status,
					    struct iwl_rx_cmd_buffer *rxb,
					    struct ieee80211_rx_status *stats)
{
	struct sk_buff *skb;
	unsigned int hdrlen, fraglen;

	/* Dont use dev_alloc_skb(), we'll have enough headroom once
	 * ieee80211_hdr pulled.
	 */
	skb = alloc_skb(128, GFP_ATOMIC);
	if (!skb) {
		IWL_ERR(mvm, "alloc_skb failed\n");
		return;
	}
	/* If frame is small enough to fit in skb->head, pull it completely.
	 * If not, only pull ieee80211_hdr so that splice() or TCP coalesce
	 * are more efficient.
	 */
	hdrlen = (len <= skb_tailroom(skb)) ? len : sizeof(*hdr);

	memcpy(skb_put(skb, hdrlen), hdr, hdrlen);
	fraglen = len - hdrlen;

	if (fraglen) {
		int offset = (void *)hdr + hdrlen -
			     rxb_addr(rxb) + rxb_offset(rxb);

		skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
				fraglen, rxb->truesize);
	}

	memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));

	ieee80211_rx(mvm->hw, skb);
}

/*
 * iwl_mvm_get_signal_strength - use new rx PHY INFO API
 * values are reported by the fw as positive values - need to negate
 * to obtain their dBM.  Account for missing antennas by replacing 0
 * values by -256dBm: practically 0 power and a non-feasible 8 bit value.
 */
static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
					struct iwl_rx_phy_info *phy_info,
					struct ieee80211_rx_status *rx_status)
{
	int energy_a, energy_b, energy_c, max_energy;
	u32 val;

	val =
	    le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]);
	energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >>
						IWL_RX_INFO_ENERGY_ANT_A_POS;
	energy_a = energy_a ? -energy_a : S8_MIN;
	energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >>
						IWL_RX_INFO_ENERGY_ANT_B_POS;
	energy_b = energy_b ? -energy_b : S8_MIN;
	energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >>
						IWL_RX_INFO_ENERGY_ANT_C_POS;
	energy_c = energy_c ? -energy_c : S8_MIN;
	max_energy = max(energy_a, energy_b);
	max_energy = max(max_energy, energy_c);

	IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n",
			energy_a, energy_b, energy_c, max_energy);

	rx_status->signal = max_energy;
	rx_status->chains = (le16_to_cpu(phy_info->phy_flags) &
				RX_RES_PHY_FLAGS_ANTENNA)
					>> RX_RES_PHY_FLAGS_ANTENNA_POS;
	rx_status->chain_signal[0] = energy_a;
	rx_status->chain_signal[1] = energy_b;
	rx_status->chain_signal[2] = energy_c;
}

/*
 * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format
 * @mvm: the mvm object
 * @hdr: 80211 header
 * @stats: status in mac80211's format
 * @rx_pkt_status: status coming from fw
 *
 * returns non 0 value if the packet should be dropped
 */
static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm,
					struct ieee80211_hdr *hdr,
					struct ieee80211_rx_status *stats,
					u32 rx_pkt_status)
{
	if (!ieee80211_has_protected(hdr->frame_control) ||
	    (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
			     RX_MPDU_RES_STATUS_SEC_NO_ENC)
		return 0;

	/* packet was encrypted with unknown alg */
	if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
					RX_MPDU_RES_STATUS_SEC_ENC_ERR)
		return 0;

	switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) {
	case RX_MPDU_RES_STATUS_SEC_CCM_ENC:
		/* alg is CCM: check MIC only */
		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
			return -1;

		stats->flag |= RX_FLAG_DECRYPTED;
		IWL_DEBUG_WEP(mvm, "hw decrypted CCMP successfully\n");
		return 0;

	case RX_MPDU_RES_STATUS_SEC_TKIP_ENC:
		/* Don't drop the frame and decrypt it in SW */
		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK))
			return 0;
		/* fall through if TTAK OK */

	case RX_MPDU_RES_STATUS_SEC_WEP_ENC:
		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK))
			return -1;

		stats->flag |= RX_FLAG_DECRYPTED;
		return 0;

	case RX_MPDU_RES_STATUS_SEC_EXT_ENC:
		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
			return -1;
		stats->flag |= RX_FLAG_DECRYPTED;
		return 0;

	default:
		IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
	}

	return 0;
}

/*
 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
 *
 * Handles the actual data of the Rx packet from the fw
 */
int iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
		       struct iwl_device_cmd *cmd)
{
	struct ieee80211_hdr *hdr;
	struct ieee80211_rx_status rx_status = {};
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_rx_phy_info *phy_info;
	struct iwl_rx_mpdu_res_start *rx_res;
	u32 len;
	u32 ampdu_status;
	u32 rate_n_flags;
	u32 rx_pkt_status;

	phy_info = &mvm->last_phy_info;
	rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
	hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
	len = le16_to_cpu(rx_res->byte_count);
	rx_pkt_status = le32_to_cpup((__le32 *)
		(pkt->data + sizeof(*rx_res) + len));

	memset(&rx_status, 0, sizeof(rx_status));

	/*
	 * We have tx blocked stations (with CS bit). If we heard frames from
	 * a blocked station on a new channel we can TX to it again.
	 */
	if (unlikely(mvm->csa_tx_block_bcn_timeout)) {
		struct ieee80211_sta *sta;

		rcu_read_lock();

		sta = ieee80211_find_sta(
			rcu_dereference(mvm->csa_tx_blocked_vif), hdr->addr2);
		if (sta)
			iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false);

		rcu_read_unlock();
	}

	/*
	 * drop the packet if it has failed being decrypted by HW
	 */
	if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, &rx_status, rx_pkt_status)) {
		IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
			       rx_pkt_status);
		return 0;
	}

	if ((unlikely(phy_info->cfg_phy_cnt > 20))) {
		IWL_DEBUG_DROP(mvm, "dsp size out of range [0,20]: %d\n",
			       phy_info->cfg_phy_cnt);
		return 0;
	}

	/*
	 * Keep packets with CRC errors (and with overrun) for monitor mode
	 * (otherwise the firmware discards them) but mark them as bad.
	 */
	if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
	    !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
		IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
		rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
	}

	/* This will be used in several places later */
	rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);

	/* rx_status carries information about the packet to mac80211 */
	rx_status.mactime = le64_to_cpu(phy_info->timestamp);
	rx_status.device_timestamp = le32_to_cpu(phy_info->system_timestamp);
	rx_status.band =
		(phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
				IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
	rx_status.freq =
		ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
					       rx_status.band);
	/*
	 * TSF as indicated by the fw is at INA time, but mac80211 expects the
	 * TSF at the beginning of the MPDU.
	 */
	/*rx_status.flag |= RX_FLAG_MACTIME_MPDU;*/

	iwl_mvm_get_signal_strength(mvm, phy_info, &rx_status);

	IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status.signal,
			      (unsigned long long)rx_status.mactime);

	/* set the preamble flag if appropriate */
	if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
		rx_status.flag |= RX_FLAG_SHORTPRE;

	if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
		/*
		 * We know which subframes of an A-MPDU belong
		 * together since we get a single PHY response
		 * from the firmware for all of them
		 */
		rx_status.flag |= RX_FLAG_AMPDU_DETAILS;
		rx_status.ampdu_reference = mvm->ampdu_ref;
	}

	/* Set up the HT phy flags */
	switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
	case RATE_MCS_CHAN_WIDTH_20:
		break;
	case RATE_MCS_CHAN_WIDTH_40:
		rx_status.flag |= RX_FLAG_40MHZ;
		break;
	case RATE_MCS_CHAN_WIDTH_80:
		rx_status.vht_flag |= RX_VHT_FLAG_80MHZ;
		break;
	case RATE_MCS_CHAN_WIDTH_160:
		rx_status.vht_flag |= RX_VHT_FLAG_160MHZ;
		break;
	}
	if (rate_n_flags & RATE_MCS_SGI_MSK)
		rx_status.flag |= RX_FLAG_SHORT_GI;
	if (rate_n_flags & RATE_HT_MCS_GF_MSK)
		rx_status.flag |= RX_FLAG_HT_GF;
	if (rate_n_flags & RATE_MCS_LDPC_MSK)
		rx_status.flag |= RX_FLAG_LDPC;
	if (rate_n_flags & RATE_MCS_HT_MSK) {
		u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >>
				RATE_MCS_STBC_POS;
		rx_status.flag |= RX_FLAG_HT;
		rx_status.rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
		rx_status.flag |= stbc << RX_FLAG_STBC_SHIFT;
	} else if (rate_n_flags & RATE_MCS_VHT_MSK) {
		u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >>
				RATE_MCS_STBC_POS;
		rx_status.vht_nss =
			((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
						RATE_VHT_MCS_NSS_POS) + 1;
		rx_status.rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
		rx_status.flag |= RX_FLAG_VHT;
		rx_status.flag |= stbc << RX_FLAG_STBC_SHIFT;
		if (rate_n_flags & RATE_MCS_BF_MSK)
			rx_status.vht_flag |= RX_VHT_FLAG_BF;
	} else {
		rx_status.rate_idx =
			iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
							    rx_status.band);
	}

#ifdef CONFIG_IWLWIFI_DEBUGFS
	iwl_mvm_update_frame_stats(mvm, &mvm->drv_rx_stats, rate_n_flags,
				   rx_status.flag & RX_FLAG_AMPDU_DETAILS);
#endif
	iwl_mvm_pass_packet_to_mac80211(mvm, hdr, len, ampdu_status,
					rxb, &rx_status);
	return 0;
}

static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm,
					 struct iwl_notif_statistics *stats)
{
	/*
	 * NOTE FW aggregates the statistics - BUT the statistics are cleared
	 * when the driver issues REPLY_STATISTICS_CMD 0x9c with CLEAR_STATS
	 * bit set.
	 */
	lockdep_assert_held(&mvm->mutex);
	memcpy(&mvm->rx_stats, &stats->rx, sizeof(struct mvm_statistics_rx));
}

struct iwl_mvm_stat_data {
	struct iwl_notif_statistics *stats;
	struct iwl_mvm *mvm;
};

static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
				  struct ieee80211_vif *vif)
{
	struct iwl_mvm_stat_data *data = _data;
	struct iwl_notif_statistics *stats = data->stats;
	struct iwl_mvm *mvm = data->mvm;
	int sig = -stats->general.beacon_filter_average_energy;
	int last_event;
	int thold = vif->bss_conf.cqm_rssi_thold;
	int hyst = vif->bss_conf.cqm_rssi_hyst;
	u16 id = le32_to_cpu(stats->rx.general.mac_id);
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	if (mvmvif->id != id)
		return;

	if (vif->type != NL80211_IFTYPE_STATION)
		return;

	mvmvif->bf_data.ave_beacon_signal = sig;

	/* BT Coex */
	if (mvmvif->bf_data.bt_coex_min_thold !=
	    mvmvif->bf_data.bt_coex_max_thold) {
		last_event = mvmvif->bf_data.last_bt_coex_event;
		if (sig > mvmvif->bf_data.bt_coex_max_thold &&
		    (last_event <= mvmvif->bf_data.bt_coex_min_thold ||
		     last_event == 0)) {
			mvmvif->bf_data.last_bt_coex_event = sig;
			IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
				     sig);
			iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
		} else if (sig < mvmvif->bf_data.bt_coex_min_thold &&
			   (last_event >= mvmvif->bf_data.bt_coex_max_thold ||
			    last_event == 0)) {
			mvmvif->bf_data.last_bt_coex_event = sig;
			IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
				     sig);
			iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
		}
	}

	if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
		return;

	/* CQM Notification */
	last_event = mvmvif->bf_data.last_cqm_event;
	if (thold && sig < thold && (last_event == 0 ||
				     sig < last_event - hyst)) {
		mvmvif->bf_data.last_cqm_event = sig;
		IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
			     sig);
		ieee80211_cqm_rssi_notify(
			vif,
			NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
			GFP_KERNEL);
	} else if (sig > thold &&
		   (last_event == 0 || sig > last_event + hyst)) {
		mvmvif->bf_data.last_cqm_event = sig;
		IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
			     sig);
		ieee80211_cqm_rssi_notify(
			vif,
			NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
			GFP_KERNEL);
	}
}

/*
 * iwl_mvm_rx_statistics - STATISTICS_NOTIFICATION handler
 *
 * TODO: This handler is implemented partially.
 */
int iwl_mvm_rx_statistics(struct iwl_mvm *mvm,
			  struct iwl_rx_cmd_buffer *rxb,
			  struct iwl_device_cmd *cmd)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_notif_statistics *stats = (void *)&pkt->data;
	struct mvm_statistics_general_common *common = &stats->general.common;
	struct iwl_mvm_stat_data data = {
		.stats = stats,
		.mvm = mvm,
	};

	/*
	 * set temperature debug enabled - ignore FW temperature updates
	 * and use the user set temperature.
	 */
	if (mvm->temperature_test) {
		if (mvm->temperature < le32_to_cpu(common->temperature))
			IWL_DEBUG_TEMP(mvm,
				       "Ignoring FW temperature update that is greater than the debug set temperature (debug temp = %d, fw temp = %d)\n",
				       mvm->temperature,
				       le32_to_cpu(common->temperature));
		/*
		 * skip iwl_mvm_tt_handler since we are in
		 * temperature debug mode and we are ignoring
		 * the new temperature value
		 */
		goto update;
	}

	if (mvm->temperature != le32_to_cpu(common->temperature)) {
		mvm->temperature = le32_to_cpu(common->temperature);
		iwl_mvm_tt_handler(mvm);
	}
update:
	iwl_mvm_update_rx_statistics(mvm, stats);

	ieee80211_iterate_active_interfaces(mvm->hw,
					    IEEE80211_IFACE_ITER_NORMAL,
					    iwl_mvm_stat_iterator,
					    &data);
	return 0;
}
Commit	Line	Data
8ca151b5 JB	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	*
51368bf7	8	* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc	9	* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5 JB	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
410dc5aa	26	* in the file called COPYING.
8ca151b5 JB	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	*
51368bf7	34	* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8b4139dc	35	* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
8ca151b5 JB	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"
8ca151b5 JB	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	*/
	74	int 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++;
5fc0f76c ES	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
8ca151b5 JB	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	*/
	98	static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
	99	struct ieee80211_hdr *hdr, u16 len,
	100	u32 ampdu_status,
	101	struct iwl_rx_cmd_buffer *rxb,
	102	struct ieee80211_rx_status *stats)
	103	{
	104	struct sk_buff *skb;
	105	unsigned int hdrlen, fraglen;
	106
	107	/* Dont use dev_alloc_skb(), we'll have enough headroom once
	108	* ieee80211_hdr pulled.
	109	*/
	110	skb = alloc_skb(128, GFP_ATOMIC);
	111	if (!skb) {
	112	IWL_ERR(mvm, "alloc_skb failed\n");
	113	return;
	114	}
	115	/* If frame is small enough to fit in skb->head, pull it completely.
	116	* If not, only pull ieee80211_hdr so that splice() or TCP coalesce
	117	* are more efficient.
	118	*/
	119	hdrlen = (len <= skb_tailroom(skb)) ? len : sizeof(*hdr);
	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	memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
	133
f14d6b39	134	ieee80211_rx(mvm->hw, skb);
8ca151b5 JB	135	}
8ca151b5 JB	136
a2d7b870 AA	137	/*
a2d7b870 AA	138	* iwl_mvm_get_signal_strength - use new rx PHY INFO API
17dbe564 AA	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.
a2d7b870	142	*/
226eb8cd JB	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)
a2d7b870 AA	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]);
17dbe564 AA	152	energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >>
17dbe564 AA	153	IWL_RX_INFO_ENERGY_ANT_A_POS;
2cddddc5	154	energy_a = energy_a ? -energy_a : S8_MIN;
17dbe564 AA	155	energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >>
17dbe564 AA	156	IWL_RX_INFO_ENERGY_ANT_B_POS;
2cddddc5	157	energy_b = energy_b ? -energy_b : S8_MIN;
17dbe564 AA	158	energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >>
17dbe564 AA	159	IWL_RX_INFO_ENERGY_ANT_C_POS;
2cddddc5	160	energy_c = energy_c ? -energy_c : S8_MIN;
a2d7b870 AA	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
226eb8cd JB	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;
a2d7b870 AA	174	}
a2d7b870 AA	175
8ca151b5 JB	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	{
	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	IWL_DEBUG_WEP(mvm, "hw decrypted CCMP successfully\n");
	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	/* fall through if TTAK OK */
	215
	216	case RX_MPDU_RES_STATUS_SEC_WEP_ENC:
	217	if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK))
	218	return -1;
	219
	220	stats->flag \|= RX_FLAG_DECRYPTED;
	221	return 0;
	222
e36e5433 MS	223	case RX_MPDU_RES_STATUS_SEC_EXT_ENC:
	224	if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
	225	return -1;
	226	stats->flag \|= RX_FLAG_DECRYPTED;
	227	return 0;
	228
8ca151b5 JB	229	default:
	230	IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
	231	}
	232
	233	return 0;
	234	}
	235
	236	/*
	237	* iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
	238	*
	239	* Handles the actual data of the Rx packet from the fw
	240	*/
	241	int iwl_mvm_rx_rx_mpdu(struct iwl_mvm mvm, struct iwl_rx_cmd_buffer rxb,
	242	struct iwl_device_cmd *cmd)
	243	{
	244	struct ieee80211_hdr *hdr;
	245	struct ieee80211_rx_status rx_status = {};
	246	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	247	struct iwl_rx_phy_info *phy_info;
	248	struct iwl_rx_mpdu_res_start *rx_res;
	249	u32 len;
	250	u32 ampdu_status;
	251	u32 rate_n_flags;
	252	u32 rx_pkt_status;
	253
	254	phy_info = &mvm->last_phy_info;
	255	rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
	256	hdr = (struct ieee80211_hdr )(pkt->data + sizeof(rx_res));
	257	len = le16_to_cpu(rx_res->byte_count);
	258	rx_pkt_status = le32_to_cpup((__le32 *)
	259	(pkt->data + sizeof(*rx_res) + len));
	260
	261	memset(&rx_status, 0, sizeof(rx_status));
	262
003e5236 AO	263	/*
	264	* We have tx blocked stations (with CS bit). If we heard frames from
	265	* a blocked station on a new channel we can TX to it again.
	266	*/
	267	if (unlikely(mvm->csa_tx_block_bcn_timeout)) {
	268	struct ieee80211_sta *sta;
	269
	270	rcu_read_lock();
	271
	272	sta = ieee80211_find_sta(
	273	rcu_dereference(mvm->csa_tx_blocked_vif), hdr->addr2);
	274	if (sta)
	275	iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false);
	276
	277	rcu_read_unlock();
	278	}
	279
8ca151b5 JB	280	/*
	281	* drop the packet if it has failed being decrypted by HW
	282	*/
	283	if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, &rx_status, rx_pkt_status)) {
	284	IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
	285	rx_pkt_status);
	286	return 0;
	287	}
	288
	289	if ((unlikely(phy_info->cfg_phy_cnt > 20))) {
	290	IWL_DEBUG_DROP(mvm, "dsp size out of range [0,20]: %d\n",
	291	phy_info->cfg_phy_cnt);
	292	return 0;
	293	}
	294
fb8b8ee1 JB	295	/*
	296	* Keep packets with CRC errors (and with overrun) for monitor mode
	297	* (otherwise the firmware discards them) but mark them as bad.
	298	*/
8ca151b5 JB	299	if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) \|\|
	300	!(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
	301	IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
fb8b8ee1	302	rx_status.flag \|= RX_FLAG_FAILED_FCS_CRC;
8ca151b5 JB	303	}
	304
	305	/* This will be used in several places later */
	306	rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);
	307
	308	/* rx_status carries information about the packet to mac80211 */
	309	rx_status.mactime = le64_to_cpu(phy_info->timestamp);
d2931bbd	310	rx_status.device_timestamp = le32_to_cpu(phy_info->system_timestamp);
8ca151b5 JB	311	rx_status.band =
	312	(phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
	313	IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
	314	rx_status.freq =
	315	ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
	316	rx_status.band);
	317	/*
	318	* TSF as indicated by the fw is at INA time, but mac80211 expects the
	319	* TSF at the beginning of the MPDU.
	320	*/
	321	/rx_status.flag \|= RX_FLAG_MACTIME_MPDU;/
	322
3fe47dca	323	iwl_mvm_get_signal_strength(mvm, phy_info, &rx_status);
8ca151b5 JB	324
	325	IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status.signal,
	326	(unsigned long long)rx_status.mactime);
	327
8ca151b5 JB	328	/* set the preamble flag if appropriate */
	329	if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
	330	rx_status.flag \|= RX_FLAG_SHORTPRE;
	331
	332	if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
	333	/*
	334	* We know which subframes of an A-MPDU belong
	335	* together since we get a single PHY response
	336	* from the firmware for all of them
	337	*/
	338	rx_status.flag \|= RX_FLAG_AMPDU_DETAILS;
	339	rx_status.ampdu_reference = mvm->ampdu_ref;
	340	}
	341
	342	/* Set up the HT phy flags */
	343	switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
	344	case RATE_MCS_CHAN_WIDTH_20:
	345	break;
	346	case RATE_MCS_CHAN_WIDTH_40:
	347	rx_status.flag \|= RX_FLAG_40MHZ;
	348	break;
	349	case RATE_MCS_CHAN_WIDTH_80:
1b8d242a	350	rx_status.vht_flag \|= RX_VHT_FLAG_80MHZ;
8ca151b5 JB	351	break;
8ca151b5 JB	352	case RATE_MCS_CHAN_WIDTH_160:
1b8d242a	353	rx_status.vht_flag \|= RX_VHT_FLAG_160MHZ;
8ca151b5 JB	354	break;
	355	}
	356	if (rate_n_flags & RATE_MCS_SGI_MSK)
	357	rx_status.flag \|= RX_FLAG_SHORT_GI;
	358	if (rate_n_flags & RATE_HT_MCS_GF_MSK)
	359	rx_status.flag \|= RX_FLAG_HT_GF;
7b1dd048 EG	360	if (rate_n_flags & RATE_MCS_LDPC_MSK)
7b1dd048 EG	361	rx_status.flag \|= RX_FLAG_LDPC;
8ca151b5	362	if (rate_n_flags & RATE_MCS_HT_MSK) {
7b1dd048 EG	363	u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >>
7b1dd048 EG	364	RATE_MCS_STBC_POS;
8ca151b5 JB	365	rx_status.flag \|= RX_FLAG_HT;
8ca151b5 JB	366	rx_status.rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
7b1dd048	367	rx_status.flag \|= stbc << RX_FLAG_STBC_SHIFT;
8ca151b5	368	} else if (rate_n_flags & RATE_MCS_VHT_MSK) {
7b1dd048 EG	369	u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >>
7b1dd048 EG	370	RATE_MCS_STBC_POS;
8ca151b5 JB	371	rx_status.vht_nss =
	372	((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
	373	RATE_VHT_MCS_NSS_POS) + 1;
	374	rx_status.rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
	375	rx_status.flag \|= RX_FLAG_VHT;
7b1dd048	376	rx_status.flag \|= stbc << RX_FLAG_STBC_SHIFT;
95e05ab7 EG	377	if (rate_n_flags & RATE_MCS_BF_MSK)
95e05ab7 EG	378	rx_status.vht_flag \|= RX_VHT_FLAG_BF;
8ca151b5 JB	379	} else {
	380	rx_status.rate_idx =
	381	iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
	382	rx_status.band);
	383	}
	384
5fc0f76c ES	385	#ifdef CONFIG_IWLWIFI_DEBUGFS
	386	iwl_mvm_update_frame_stats(mvm, &mvm->drv_rx_stats, rate_n_flags,
	387	rx_status.flag & RX_FLAG_AMPDU_DETAILS);
	388	#endif
8ca151b5 JB	389	iwl_mvm_pass_packet_to_mac80211(mvm, hdr, len, ampdu_status,
	390	rxb, &rx_status);
	391	return 0;
	392	}
9ee718aa	393
3848ab66 MG	394	static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm,
	395	struct iwl_notif_statistics *stats)
	396	{
	397	/*
	398	* NOTE FW aggregates the statistics - BUT the statistics are cleared
	399	* when the driver issues REPLY_STATISTICS_CMD 0x9c with CLEAR_STATS
	400	* bit set.
	401	*/
	402	lockdep_assert_held(&mvm->mutex);
	403	memcpy(&mvm->rx_stats, &stats->rx, sizeof(struct mvm_statistics_rx));
	404	}
	405
a20fd398 AO	406	struct iwl_mvm_stat_data {
	407	struct iwl_notif_statistics *stats;
	408	struct iwl_mvm *mvm;
	409	};
	410
	411	static void iwl_mvm_stat_iterator(void _data, u8 mac,
	412	struct ieee80211_vif *vif)
	413	{
	414	struct iwl_mvm_stat_data *data = _data;
	415	struct iwl_notif_statistics *stats = data->stats;
	416	struct iwl_mvm *mvm = data->mvm;
	417	int sig = -stats->general.beacon_filter_average_energy;
	418	int last_event;
	419	int thold = vif->bss_conf.cqm_rssi_thold;
	420	int hyst = vif->bss_conf.cqm_rssi_hyst;
	421	u16 id = le32_to_cpu(stats->rx.general.mac_id);
	422	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	423
	424	if (mvmvif->id != id)
	425	return;
	426
	427	if (vif->type != NL80211_IFTYPE_STATION)
	428	return;
	429
	430	mvmvif->bf_data.ave_beacon_signal = sig;
	431
911222b5 AO	432	/* BT Coex */
	433	if (mvmvif->bf_data.bt_coex_min_thold !=
	434	mvmvif->bf_data.bt_coex_max_thold) {
	435	last_event = mvmvif->bf_data.last_bt_coex_event;
	436	if (sig > mvmvif->bf_data.bt_coex_max_thold &&
	437	(last_event <= mvmvif->bf_data.bt_coex_min_thold \|\|
	438	last_event == 0)) {
	439	mvmvif->bf_data.last_bt_coex_event = sig;
	440	IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
	441	sig);
	442	iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
	443	} else if (sig < mvmvif->bf_data.bt_coex_min_thold &&
	444	(last_event >= mvmvif->bf_data.bt_coex_max_thold \|\|
	445	last_event == 0)) {
	446	mvmvif->bf_data.last_bt_coex_event = sig;
	447	IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
	448	sig);
	449	iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
	450	}
	451	}
	452
a20fd398 AO	453	if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
	454	return;
	455
	456	/* CQM Notification */
	457	last_event = mvmvif->bf_data.last_cqm_event;
	458	if (thold && sig < thold && (last_event == 0 \|\|
	459	sig < last_event - hyst)) {
	460	mvmvif->bf_data.last_cqm_event = sig;
	461	IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
	462	sig);
	463	ieee80211_cqm_rssi_notify(
	464	vif,
	465	NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
	466	GFP_KERNEL);
	467	} else if (sig > thold &&
	468	(last_event == 0 \|\| sig > last_event + hyst)) {
	469	mvmvif->bf_data.last_cqm_event = sig;
	470	IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
	471	sig);
	472	ieee80211_cqm_rssi_notify(
	473	vif,
	474	NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
	475	GFP_KERNEL);
	476	}
	477	}
	478
9ee718aa EL	479	/*
	480	* iwl_mvm_rx_statistics - STATISTICS_NOTIFICATION handler
	481	*
	482	* TODO: This handler is implemented partially.
9ee718aa EL	483	*/
	484	int iwl_mvm_rx_statistics(struct iwl_mvm *mvm,
	485	struct iwl_rx_cmd_buffer *rxb,
	486	struct iwl_device_cmd *cmd)
	487	{
	488	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	489	struct iwl_notif_statistics stats = (void )&pkt->data;
	490	struct mvm_statistics_general_common *common = &stats->general.common;
a20fd398 AO	491	struct iwl_mvm_stat_data data = {
	492	.stats = stats,
	493	.mvm = mvm,
	494	};
9ee718aa	495
7280d1f0 MG	496	/*
	497	* set temperature debug enabled - ignore FW temperature updates
	498	* and use the user set temperature.
	499	*/
	500	if (mvm->temperature_test) {
	501	if (mvm->temperature < le32_to_cpu(common->temperature))
	502	IWL_DEBUG_TEMP(mvm,
	503	"Ignoring FW temperature update that is greater than the debug set temperature (debug temp = %d, fw temp = %d)\n",
	504	mvm->temperature,
	505	le32_to_cpu(common->temperature));
	506	/*
	507	* skip iwl_mvm_tt_handler since we are in
	508	* temperature debug mode and we are ignoring
	509	* the new temperature value
	510	*/
	511	goto update;
	512	}
	513
9ee718aa EL	514	if (mvm->temperature != le32_to_cpu(common->temperature)) {
	515	mvm->temperature = le32_to_cpu(common->temperature);
	516	iwl_mvm_tt_handler(mvm);
	517	}
7280d1f0	518	update:
3848ab66	519	iwl_mvm_update_rx_statistics(mvm, stats);
9ee718aa	520
a20fd398 AO	521	ieee80211_iterate_active_interfaces(mvm->hw,
	522	IEEE80211_IFACE_ITER_NORMAL,
	523	iwl_mvm_stat_iterator,
	524	&data);
9ee718aa EL	525	return 0;
9ee718aa EL	526	}