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Commit 278fc73c authored by Wey-Yi Guy's avatar Wey-Yi Guy Committed by Reinette Chatre
Browse files

iwlwifi: move agn specific rx related code to iwl-agn-rx.c 



To avoid having unnecessary functions in iwlcore.ko, those that
are not shared by agn and 3945, move agn specific rx related code
to iwl-agn-rx.c.

Signed-off-by: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
parent 87563715

drivers/net/wireless/iwlwifi/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -11,7 +11,7 @@ CFLAGS_iwl-devtrace.o := -I$(src) 
obj-$(CONFIG_IWLAGN)	+= iwlagn.o

iwlagn-objs		:= iwl-agn.o iwl-agn-rs.o iwl-agn-led.o iwl-agn-ict.o

iwlagn-objs		+= iwl-agn-ucode.o iwl-agn-hcmd.o iwl-agn-tx.o

iwlagn-objs		+= iwl-agn-lib.o

iwlagn-objs		+= iwl-agn-lib.o iwl-agn-rx.o

iwlagn-$(CONFIG_IWLWIFI_DEBUGFS) += iwl-agn-debugfs.o



iwlagn-$(CONFIG_IWL4965) += iwl-4965.o

drivers/net/wireless/iwlwifi/iwl-agn-rx.c

0 → 100644
+278 −0
Original line number Diff line number Diff line 
/******************************************************************************

 *

 * GPL LICENSE SUMMARY

 *

 * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.

 *

 * 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 LICENSE.GPL.

 *

 * Contact Information:

 *  Intel Linux Wireless <ilw@linux.intel.com>

 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

 *

 *****************************************************************************/



#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/init.h>

#include <linux/sched.h>



#include "iwl-dev.h"

#include "iwl-core.h"

#include "iwl-calib.h"

#include "iwl-sta.h"

#include "iwl-io.h"

#include "iwl-helpers.h"

#include "iwl-agn-hw.h"

#include "iwl-agn.h"



void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,

				struct iwl_rx_mem_buffer *rxb)



{

	struct iwl_rx_packet *pkt = rxb_addr(rxb);

	struct iwl_missed_beacon_notif *missed_beacon;



	missed_beacon = &pkt->u.missed_beacon;

	if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) >

	    priv->missed_beacon_threshold) {

		IWL_DEBUG_CALIB(priv,

		    "missed bcn cnsq %d totl %d rcd %d expctd %d\n",

		    le32_to_cpu(missed_beacon->consecutive_missed_beacons),

		    le32_to_cpu(missed_beacon->total_missed_becons),

		    le32_to_cpu(missed_beacon->num_recvd_beacons),

		    le32_to_cpu(missed_beacon->num_expected_beacons));

		if (!test_bit(STATUS_SCANNING, &priv->status))

			iwl_init_sensitivity(priv);

	}

}



/* Calculate noise level, based on measurements during network silence just

 *   before arriving beacon.  This measurement can be done only if we know

 *   exactly when to expect beacons, therefore only when we're associated. */

static void iwl_rx_calc_noise(struct iwl_priv *priv)

{

	struct statistics_rx_non_phy *rx_info

				= &(priv->statistics.rx.general);

	int num_active_rx = 0;

	int total_silence = 0;

	int bcn_silence_a =

		le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;

	int bcn_silence_b =

		le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;

	int bcn_silence_c =

		le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;

	int last_rx_noise;



	if (bcn_silence_a) {

		total_silence += bcn_silence_a;

		num_active_rx++;

	}

	if (bcn_silence_b) {

		total_silence += bcn_silence_b;

		num_active_rx++;

	}

	if (bcn_silence_c) {

		total_silence += bcn_silence_c;

		num_active_rx++;

	}



	/* Average among active antennas */

	if (num_active_rx)

		last_rx_noise = (total_silence / num_active_rx) - 107;

	else

		last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;



	IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n",

			bcn_silence_a, bcn_silence_b, bcn_silence_c,

			last_rx_noise);

}



#ifdef CONFIG_IWLWIFI_DEBUGFS

/*

 *  based on the assumption of all statistics counter are in DWORD

 *  FIXME: This function is for debugging, do not deal with

 *  the case of counters roll-over.

 */

static void iwl_accumulative_statistics(struct iwl_priv *priv,

					__le32 *stats)

{

	int i;

	__le32 *prev_stats;

	u32 *accum_stats;

	u32 *delta, *max_delta;



	prev_stats = (__le32 *)&priv->statistics;

	accum_stats = (u32 *)&priv->accum_statistics;

	delta = (u32 *)&priv->delta_statistics;

	max_delta = (u32 *)&priv->max_delta;



	for (i = sizeof(__le32); i < sizeof(struct iwl_notif_statistics);

	     i += sizeof(__le32), stats++, prev_stats++, delta++,

	     max_delta++, accum_stats++) {

		if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {

			*delta = (le32_to_cpu(*stats) -

				le32_to_cpu(*prev_stats));

			*accum_stats += *delta;

			if (*delta > *max_delta)

				*max_delta = *delta;

		}

	}



	/* reset accumulative statistics for "no-counter" type statistics */

	priv->accum_statistics.general.temperature =

		priv->statistics.general.temperature;

	priv->accum_statistics.general.temperature_m =

		priv->statistics.general.temperature_m;

	priv->accum_statistics.general.ttl_timestamp =

		priv->statistics.general.ttl_timestamp;

	priv->accum_statistics.tx.tx_power.ant_a =

		priv->statistics.tx.tx_power.ant_a;

	priv->accum_statistics.tx.tx_power.ant_b =

		priv->statistics.tx.tx_power.ant_b;

	priv->accum_statistics.tx.tx_power.ant_c =

		priv->statistics.tx.tx_power.ant_c;

}

#endif



#define REG_RECALIB_PERIOD (60)



/**

 * iwl_good_plcp_health - checks for plcp error.

 *

 * When the plcp error is exceeding the thresholds, reset the radio

 * to improve the throughput.

 */

bool iwl_good_plcp_health(struct iwl_priv *priv,

				struct iwl_rx_packet *pkt)

{

	bool rc = true;

	int combined_plcp_delta;

	unsigned int plcp_msec;

	unsigned long plcp_received_jiffies;



	/*

	 * check for plcp_err and trigger radio reset if it exceeds

	 * the plcp error threshold plcp_delta.

	 */

	plcp_received_jiffies = jiffies;

	plcp_msec = jiffies_to_msecs((long) plcp_received_jiffies -

					(long) priv->plcp_jiffies);

	priv->plcp_jiffies = plcp_received_jiffies;

	/*

	 * check to make sure plcp_msec is not 0 to prevent division

	 * by zero.

	 */

	if (plcp_msec) {

		combined_plcp_delta =

			(le32_to_cpu(pkt->u.stats.rx.ofdm.plcp_err) -

			le32_to_cpu(priv->statistics.rx.ofdm.plcp_err)) +

			(le32_to_cpu(pkt->u.stats.rx.ofdm_ht.plcp_err) -

			le32_to_cpu(priv->statistics.rx.ofdm_ht.plcp_err));



		if ((combined_plcp_delta > 0) &&

		    ((combined_plcp_delta * 100) / plcp_msec) >

			priv->cfg->plcp_delta_threshold) {

			/*

			 * if plcp_err exceed the threshold,

			 * the following data is printed in csv format:

			 *    Text: plcp_err exceeded %d,

			 *    Received ofdm.plcp_err,

			 *    Current ofdm.plcp_err,

			 *    Received ofdm_ht.plcp_err,

			 *    Current ofdm_ht.plcp_err,

			 *    combined_plcp_delta,

			 *    plcp_msec

			 */

			IWL_DEBUG_RADIO(priv, "plcp_err exceeded %u, "

				"%u, %u, %u, %u, %d, %u mSecs\n",

				priv->cfg->plcp_delta_threshold,

				le32_to_cpu(pkt->u.stats.rx.ofdm.plcp_err),

				le32_to_cpu(

				       priv->statistics.rx.ofdm.plcp_err),

				le32_to_cpu(pkt->u.stats.rx.ofdm_ht.plcp_err),

				le32_to_cpu(

				  priv->statistics.rx.ofdm_ht.plcp_err),

				combined_plcp_delta, plcp_msec);

			rc = false;

		}

	}

	return rc;

}



void iwl_rx_statistics(struct iwl_priv *priv,

			      struct iwl_rx_mem_buffer *rxb)

{

	int change;

	struct iwl_rx_packet *pkt = rxb_addr(rxb);





	IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",

		     (int)sizeof(priv->statistics),

		     le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);



	change = ((priv->statistics.general.temperature !=

		   pkt->u.stats.general.temperature) ||

		  ((priv->statistics.flag &

		    STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=

		   (pkt->u.stats.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)));



#ifdef CONFIG_IWLWIFI_DEBUGFS

	iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);

#endif

	iwl_recover_from_statistics(priv, pkt);



	memcpy(&priv->statistics, &pkt->u.stats,

	       sizeof(priv->statistics));



	set_bit(STATUS_STATISTICS, &priv->status);



	/* Reschedule the statistics timer to occur in

	 * REG_RECALIB_PERIOD seconds to ensure we get a

	 * thermal update even if the uCode doesn't give

	 * us one */

	mod_timer(&priv->statistics_periodic, jiffies +

		  msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));



	if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&

	    (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {

		iwl_rx_calc_noise(priv);

		queue_work(priv->workqueue, &priv->run_time_calib_work);

	}

	if (priv->cfg->ops->lib->temp_ops.temperature && change)

		priv->cfg->ops->lib->temp_ops.temperature(priv);

}



void iwl_reply_statistics(struct iwl_priv *priv,

			      struct iwl_rx_mem_buffer *rxb)

{

	struct iwl_rx_packet *pkt = rxb_addr(rxb);



	if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {

#ifdef CONFIG_IWLWIFI_DEBUGFS

		memset(&priv->accum_statistics, 0,

			sizeof(struct iwl_notif_statistics));

		memset(&priv->delta_statistics, 0,

			sizeof(struct iwl_notif_statistics));

		memset(&priv->max_delta, 0,

			sizeof(struct iwl_notif_statistics));

#endif

		IWL_DEBUG_RX(priv, "Statistics have been cleared\n");

	}

	iwl_rx_statistics(priv, rxb);

}

drivers/net/wireless/iwlwifi/iwl-agn.h

+10 −0
Original line number Diff line number Diff line
@@ -201,6 +201,16 @@ static inline bool iwl_is_tx_success(u32 status) 
	       (status == TX_STATUS_DIRECT_DONE);

}



/* rx */

void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,

				struct iwl_rx_mem_buffer *rxb);

bool iwl_good_plcp_health(struct iwl_priv *priv,

			  struct iwl_rx_packet *pkt);

void iwl_rx_statistics(struct iwl_priv *priv,

		       struct iwl_rx_mem_buffer *rxb);

void iwl_reply_statistics(struct iwl_priv *priv,

			  struct iwl_rx_mem_buffer *rxb);



/* scan */

void iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif);

drivers/net/wireless/iwlwifi/iwl-core.h

+0 −8
Original line number Diff line number Diff line
@@ -455,20 +455,12 @@ void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, 
int iwl_rx_queue_space(const struct iwl_rx_queue *q);

void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);

/* Handlers */

void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,

			       struct iwl_rx_mem_buffer *rxb);

void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,

					  struct iwl_rx_mem_buffer *rxb);

bool iwl_good_plcp_health(struct iwl_priv *priv,

				 struct iwl_rx_packet *pkt);

bool iwl_good_ack_health(struct iwl_priv *priv,

				 struct iwl_rx_packet *pkt);

void iwl_recover_from_statistics(struct iwl_priv *priv,

				struct iwl_rx_packet *pkt);

void iwl_rx_statistics(struct iwl_priv *priv,

			      struct iwl_rx_mem_buffer *rxb);

void iwl_reply_statistics(struct iwl_priv *priv,

			  struct iwl_rx_mem_buffer *rxb);

void iwl_chswitch_done(struct iwl_priv *priv, bool is_success);

void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);

drivers/net/wireless/iwlwifi/iwl-rx.c

+0 −238
Original line number Diff line number Diff line
@@ -205,26 +205,6 @@ int iwl_rx_queue_alloc(struct iwl_priv *priv) 
}

EXPORT_SYMBOL(iwl_rx_queue_alloc);



void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,

				struct iwl_rx_mem_buffer *rxb)



{

	struct iwl_rx_packet *pkt = rxb_addr(rxb);

	struct iwl_missed_beacon_notif *missed_beacon;



	missed_beacon = &pkt->u.missed_beacon;

	if (le32_to_cpu(missed_beacon->consecutive_missed_beacons) >

	    priv->missed_beacon_threshold) {

		IWL_DEBUG_CALIB(priv, "missed bcn cnsq %d totl %d rcd %d expctd %d\n",

		    le32_to_cpu(missed_beacon->consecutive_missed_beacons),

		    le32_to_cpu(missed_beacon->total_missed_becons),

		    le32_to_cpu(missed_beacon->num_recvd_beacons),

		    le32_to_cpu(missed_beacon->num_expected_beacons));

		if (!test_bit(STATUS_SCANNING, &priv->status))

			iwl_init_sensitivity(priv);

	}

}

EXPORT_SYMBOL(iwl_rx_missed_beacon_notif);



void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,

					  struct iwl_rx_mem_buffer *rxb)
@@ -243,161 +223,6 @@ void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv, 
}

EXPORT_SYMBOL(iwl_rx_spectrum_measure_notif);







/* Calculate noise level, based on measurements during network silence just

 *   before arriving beacon.  This measurement can be done only if we know

 *   exactly when to expect beacons, therefore only when we're associated. */

static void iwl_rx_calc_noise(struct iwl_priv *priv)

{

	struct statistics_rx_non_phy *rx_info

				= &(priv->statistics.rx.general);

	int num_active_rx = 0;

	int total_silence = 0;

	int bcn_silence_a =

		le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;

	int bcn_silence_b =

		le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;

	int bcn_silence_c =

		le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;

	int last_rx_noise;



	if (bcn_silence_a) {

		total_silence += bcn_silence_a;

		num_active_rx++;

	}

	if (bcn_silence_b) {

		total_silence += bcn_silence_b;

		num_active_rx++;

	}

	if (bcn_silence_c) {

		total_silence += bcn_silence_c;

		num_active_rx++;

	}



	/* Average among active antennas */

	if (num_active_rx)

		last_rx_noise = (total_silence / num_active_rx) - 107;

	else

		last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;



	IWL_DEBUG_CALIB(priv, "inband silence a %u, b %u, c %u, dBm %d\n",

			bcn_silence_a, bcn_silence_b, bcn_silence_c,

			last_rx_noise);

}



#ifdef CONFIG_IWLWIFI_DEBUGFS

/*

 *  based on the assumption of all statistics counter are in DWORD

 *  FIXME: This function is for debugging, do not deal with

 *  the case of counters roll-over.

 */

static void iwl_accumulative_statistics(struct iwl_priv *priv,

					__le32 *stats)

{

	int i;

	__le32 *prev_stats;

	u32 *accum_stats;

	u32 *delta, *max_delta;



	prev_stats = (__le32 *)&priv->statistics;

	accum_stats = (u32 *)&priv->accum_statistics;

	delta = (u32 *)&priv->delta_statistics;

	max_delta = (u32 *)&priv->max_delta;



	for (i = sizeof(__le32); i < sizeof(struct iwl_notif_statistics);

	     i += sizeof(__le32), stats++, prev_stats++, delta++,

	     max_delta++, accum_stats++) {

		if (le32_to_cpu(*stats) > le32_to_cpu(*prev_stats)) {

			*delta = (le32_to_cpu(*stats) -

				le32_to_cpu(*prev_stats));

			*accum_stats += *delta;

			if (*delta > *max_delta)

				*max_delta = *delta;

		}

	}



	/* reset accumulative statistics for "no-counter" type statistics */

	priv->accum_statistics.general.temperature =

		priv->statistics.general.temperature;

	priv->accum_statistics.general.temperature_m =

		priv->statistics.general.temperature_m;

	priv->accum_statistics.general.ttl_timestamp =

		priv->statistics.general.ttl_timestamp;

	priv->accum_statistics.tx.tx_power.ant_a =

		priv->statistics.tx.tx_power.ant_a;

	priv->accum_statistics.tx.tx_power.ant_b =

		priv->statistics.tx.tx_power.ant_b;

	priv->accum_statistics.tx.tx_power.ant_c =

		priv->statistics.tx.tx_power.ant_c;

}

#endif



#define REG_RECALIB_PERIOD (60)



/**

 * iwl_good_plcp_health - checks for plcp error.

 *

 * When the plcp error is exceeding the thresholds, reset the radio

 * to improve the throughput.

 */

bool iwl_good_plcp_health(struct iwl_priv *priv,

				struct iwl_rx_packet *pkt)

{

	bool rc = true;

	int combined_plcp_delta;

	unsigned int plcp_msec;

	unsigned long plcp_received_jiffies;



	/*

	 * check for plcp_err and trigger radio reset if it exceeds

	 * the plcp error threshold plcp_delta.

	 */

	plcp_received_jiffies = jiffies;

	plcp_msec = jiffies_to_msecs((long) plcp_received_jiffies -

					(long) priv->plcp_jiffies);

	priv->plcp_jiffies = plcp_received_jiffies;

	/*

	 * check to make sure plcp_msec is not 0 to prevent division

	 * by zero.

	 */

	if (plcp_msec) {

		combined_plcp_delta =

			(le32_to_cpu(pkt->u.stats.rx.ofdm.plcp_err) -

			le32_to_cpu(priv->statistics.rx.ofdm.plcp_err)) +

			(le32_to_cpu(pkt->u.stats.rx.ofdm_ht.plcp_err) -

			le32_to_cpu(priv->statistics.rx.ofdm_ht.plcp_err));



		if ((combined_plcp_delta > 0) &&

		    ((combined_plcp_delta * 100) / plcp_msec) >

			priv->cfg->plcp_delta_threshold) {

			/*

			 * if plcp_err exceed the threshold,

			 * the following data is printed in csv format:

			 *    Text: plcp_err exceeded %d,

			 *    Received ofdm.plcp_err,

			 *    Current ofdm.plcp_err,

			 *    Received ofdm_ht.plcp_err,

			 *    Current ofdm_ht.plcp_err,

			 *    combined_plcp_delta,

			 *    plcp_msec

			 */

			IWL_DEBUG_RADIO(priv, "plcp_err exceeded %u, "

				"%u, %u, %u, %u, %d, %u mSecs\n",

				priv->cfg->plcp_delta_threshold,

				le32_to_cpu(pkt->u.stats.rx.ofdm.plcp_err),

				le32_to_cpu(priv->statistics.rx.ofdm.plcp_err),

				le32_to_cpu(pkt->u.stats.rx.ofdm_ht.plcp_err),

				le32_to_cpu(

				  priv->statistics.rx.ofdm_ht.plcp_err),

				combined_plcp_delta, plcp_msec);

			rc = false;

		}

	}

	return rc;

}

EXPORT_SYMBOL(iwl_good_plcp_health);



void iwl_recover_from_statistics(struct iwl_priv *priv,

				struct iwl_rx_packet *pkt)

{
@@ -431,69 +256,6 @@ void iwl_recover_from_statistics(struct iwl_priv *priv, 
}

EXPORT_SYMBOL(iwl_recover_from_statistics);



void iwl_rx_statistics(struct iwl_priv *priv,

			      struct iwl_rx_mem_buffer *rxb)

{

	int change;

	struct iwl_rx_packet *pkt = rxb_addr(rxb);





	IWL_DEBUG_RX(priv, "Statistics notification received (%d vs %d).\n",

		     (int)sizeof(priv->statistics),

		     le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);



	change = ((priv->statistics.general.temperature !=

		   pkt->u.stats.general.temperature) ||

		  ((priv->statistics.flag &

		    STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=

		   (pkt->u.stats.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK)));



#ifdef CONFIG_IWLWIFI_DEBUGFS

	iwl_accumulative_statistics(priv, (__le32 *)&pkt->u.stats);

#endif

	iwl_recover_from_statistics(priv, pkt);



	memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));



	set_bit(STATUS_STATISTICS, &priv->status);



	/* Reschedule the statistics timer to occur in

	 * REG_RECALIB_PERIOD seconds to ensure we get a

	 * thermal update even if the uCode doesn't give

	 * us one */

	mod_timer(&priv->statistics_periodic, jiffies +

		  msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));



	if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&

	    (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {

		iwl_rx_calc_noise(priv);

		queue_work(priv->workqueue, &priv->run_time_calib_work);

	}

	if (priv->cfg->ops->lib->temp_ops.temperature && change)

		priv->cfg->ops->lib->temp_ops.temperature(priv);

}

EXPORT_SYMBOL(iwl_rx_statistics);



void iwl_reply_statistics(struct iwl_priv *priv,

			      struct iwl_rx_mem_buffer *rxb)

{

	struct iwl_rx_packet *pkt = rxb_addr(rxb);



	if (le32_to_cpu(pkt->u.stats.flag) & UCODE_STATISTICS_CLEAR_MSK) {

#ifdef CONFIG_IWLWIFI_DEBUGFS

		memset(&priv->accum_statistics, 0,

			sizeof(struct iwl_notif_statistics));

		memset(&priv->delta_statistics, 0,

			sizeof(struct iwl_notif_statistics));

		memset(&priv->max_delta, 0,

			sizeof(struct iwl_notif_statistics));

#endif

		IWL_DEBUG_RX(priv, "Statistics have been cleared\n");

	}

	iwl_rx_statistics(priv, rxb);

}

EXPORT_SYMBOL(iwl_reply_statistics);



/*

 * returns non-zero if packet should be dropped

 */