iwlwifi: move DVM code into subdirectory

Since we're working on another mode/driver
inside iwlwifi, move the current one into a
subdirectory to more cleanly separate the
code. While at it, rename all the files.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 1167 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/dvm/rx.c b/drivers/net/wireless/iwlwifi/dvm/rx.c
new file mode 100644
index 000000000000..d61980248408
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/dvm/rx.c
@@ -0,0 +1,1167 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
+ *
+ * Portions of this file are derived from the ipw3945 project, as well
+ * as portionhelp of the ieee80211 subsystem header files.
+ *
+ * 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.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <linux/etherdevice.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <net/mac80211.h>
+#include <asm/unaligned.h>
+#include "iwl-io.h"
+#include "eeprom.h"
+#include "dev.h"
+#include "calib.h"
+#include "agn.h"
+
+#define IWL_CMD_ENTRY(x) [x] = #x
+
+const char *iwl_dvm_cmd_strings[REPLY_MAX] = {
+	IWL_CMD_ENTRY(REPLY_ALIVE),
+	IWL_CMD_ENTRY(REPLY_ERROR),
+	IWL_CMD_ENTRY(REPLY_ECHO),
+	IWL_CMD_ENTRY(REPLY_RXON),
+	IWL_CMD_ENTRY(REPLY_RXON_ASSOC),
+	IWL_CMD_ENTRY(REPLY_QOS_PARAM),
+	IWL_CMD_ENTRY(REPLY_RXON_TIMING),
+	IWL_CMD_ENTRY(REPLY_ADD_STA),
+	IWL_CMD_ENTRY(REPLY_REMOVE_STA),
+	IWL_CMD_ENTRY(REPLY_REMOVE_ALL_STA),
+	IWL_CMD_ENTRY(REPLY_TXFIFO_FLUSH),
+	IWL_CMD_ENTRY(REPLY_WEPKEY),
+	IWL_CMD_ENTRY(REPLY_TX),
+	IWL_CMD_ENTRY(REPLY_LEDS_CMD),
+	IWL_CMD_ENTRY(REPLY_TX_LINK_QUALITY_CMD),
+	IWL_CMD_ENTRY(COEX_PRIORITY_TABLE_CMD),
+	IWL_CMD_ENTRY(COEX_MEDIUM_NOTIFICATION),
+	IWL_CMD_ENTRY(COEX_EVENT_CMD),
+	IWL_CMD_ENTRY(REPLY_QUIET_CMD),
+	IWL_CMD_ENTRY(REPLY_CHANNEL_SWITCH),
+	IWL_CMD_ENTRY(CHANNEL_SWITCH_NOTIFICATION),
+	IWL_CMD_ENTRY(REPLY_SPECTRUM_MEASUREMENT_CMD),
+	IWL_CMD_ENTRY(SPECTRUM_MEASURE_NOTIFICATION),
+	IWL_CMD_ENTRY(POWER_TABLE_CMD),
+	IWL_CMD_ENTRY(PM_SLEEP_NOTIFICATION),
+	IWL_CMD_ENTRY(PM_DEBUG_STATISTIC_NOTIFIC),
+	IWL_CMD_ENTRY(REPLY_SCAN_CMD),
+	IWL_CMD_ENTRY(REPLY_SCAN_ABORT_CMD),
+	IWL_CMD_ENTRY(SCAN_START_NOTIFICATION),
+	IWL_CMD_ENTRY(SCAN_RESULTS_NOTIFICATION),
+	IWL_CMD_ENTRY(SCAN_COMPLETE_NOTIFICATION),
+	IWL_CMD_ENTRY(BEACON_NOTIFICATION),
+	IWL_CMD_ENTRY(REPLY_TX_BEACON),
+	IWL_CMD_ENTRY(WHO_IS_AWAKE_NOTIFICATION),
+	IWL_CMD_ENTRY(QUIET_NOTIFICATION),
+	IWL_CMD_ENTRY(REPLY_TX_PWR_TABLE_CMD),
+	IWL_CMD_ENTRY(MEASURE_ABORT_NOTIFICATION),
+	IWL_CMD_ENTRY(REPLY_BT_CONFIG),
+	IWL_CMD_ENTRY(REPLY_STATISTICS_CMD),
+	IWL_CMD_ENTRY(STATISTICS_NOTIFICATION),
+	IWL_CMD_ENTRY(REPLY_CARD_STATE_CMD),
+	IWL_CMD_ENTRY(CARD_STATE_NOTIFICATION),
+	IWL_CMD_ENTRY(MISSED_BEACONS_NOTIFICATION),
+	IWL_CMD_ENTRY(REPLY_CT_KILL_CONFIG_CMD),
+	IWL_CMD_ENTRY(SENSITIVITY_CMD),
+	IWL_CMD_ENTRY(REPLY_PHY_CALIBRATION_CMD),
+	IWL_CMD_ENTRY(REPLY_RX_PHY_CMD),
+	IWL_CMD_ENTRY(REPLY_RX_MPDU_CMD),
+	IWL_CMD_ENTRY(REPLY_RX),
+	IWL_CMD_ENTRY(REPLY_COMPRESSED_BA),
+	IWL_CMD_ENTRY(CALIBRATION_CFG_CMD),
+	IWL_CMD_ENTRY(CALIBRATION_RES_NOTIFICATION),
+	IWL_CMD_ENTRY(CALIBRATION_COMPLETE_NOTIFICATION),
+	IWL_CMD_ENTRY(REPLY_TX_POWER_DBM_CMD),
+	IWL_CMD_ENTRY(TEMPERATURE_NOTIFICATION),
+	IWL_CMD_ENTRY(TX_ANT_CONFIGURATION_CMD),
+	IWL_CMD_ENTRY(REPLY_BT_COEX_PROFILE_NOTIF),
+	IWL_CMD_ENTRY(REPLY_BT_COEX_PRIO_TABLE),
+	IWL_CMD_ENTRY(REPLY_BT_COEX_PROT_ENV),
+	IWL_CMD_ENTRY(REPLY_WIPAN_PARAMS),
+	IWL_CMD_ENTRY(REPLY_WIPAN_RXON),
+	IWL_CMD_ENTRY(REPLY_WIPAN_RXON_TIMING),
+	IWL_CMD_ENTRY(REPLY_WIPAN_RXON_ASSOC),
+	IWL_CMD_ENTRY(REPLY_WIPAN_QOS_PARAM),
+	IWL_CMD_ENTRY(REPLY_WIPAN_WEPKEY),
+	IWL_CMD_ENTRY(REPLY_WIPAN_P2P_CHANNEL_SWITCH),
+	IWL_CMD_ENTRY(REPLY_WIPAN_NOA_NOTIFICATION),
+	IWL_CMD_ENTRY(REPLY_WIPAN_DEACTIVATION_COMPLETE),
+	IWL_CMD_ENTRY(REPLY_WOWLAN_PATTERNS),
+	IWL_CMD_ENTRY(REPLY_WOWLAN_WAKEUP_FILTER),
+	IWL_CMD_ENTRY(REPLY_WOWLAN_TSC_RSC_PARAMS),
+	IWL_CMD_ENTRY(REPLY_WOWLAN_TKIP_PARAMS),
+	IWL_CMD_ENTRY(REPLY_WOWLAN_KEK_KCK_MATERIAL),
+	IWL_CMD_ENTRY(REPLY_WOWLAN_GET_STATUS),
+	IWL_CMD_ENTRY(REPLY_D3_CONFIG),
+};
+#undef IWL_CMD_ENTRY
+
+/******************************************************************************
+ *
+ * Generic RX handler implementations
+ *
+ ******************************************************************************/
+
+static int iwlagn_rx_reply_error(struct iwl_priv *priv,
+			       struct iwl_rx_cmd_buffer *rxb,
+			       struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_error_resp *err_resp = (void *)pkt->data;
+
+	IWL_ERR(priv, "Error Reply type 0x%08X cmd REPLY_ERROR (0x%02X) "
+		"seq 0x%04X ser 0x%08X\n",
+		le32_to_cpu(err_resp->error_type),
+		err_resp->cmd_id,
+		le16_to_cpu(err_resp->bad_cmd_seq_num),
+		le32_to_cpu(err_resp->error_info));
+	return 0;
+}
+
+static int iwlagn_rx_csa(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb,
+			       struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_csa_notification *csa = (void *)pkt->data;
+	/*
+	 * MULTI-FIXME
+	 * See iwlagn_mac_channel_switch.
+	 */
+	struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
+	struct iwl_rxon_cmd *rxon = (void *)&ctx->active;
+
+	if (!test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
+		return 0;
+
+	if (!le32_to_cpu(csa->status) && csa->channel == priv->switch_channel) {
+		rxon->channel = csa->channel;
+		ctx->staging.channel = csa->channel;
+		IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
+			      le16_to_cpu(csa->channel));
+		iwl_chswitch_done(priv, true);
+	} else {
+		IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
+			le16_to_cpu(csa->channel));
+		iwl_chswitch_done(priv, false);
+	}
+	return 0;
+}
+
+
+static int iwlagn_rx_spectrum_measure_notif(struct iwl_priv *priv,
+					  struct iwl_rx_cmd_buffer *rxb,
+					  struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_spectrum_notification *report = (void *)pkt->data;
+
+	if (!report->state) {
+		IWL_DEBUG_11H(priv,
+			"Spectrum Measure Notification: Start\n");
+		return 0;
+	}
+
+	memcpy(&priv->measure_report, report, sizeof(*report));
+	priv->measurement_status |= MEASUREMENT_READY;
+	return 0;
+}
+
+static int iwlagn_rx_pm_sleep_notif(struct iwl_priv *priv,
+				  struct iwl_rx_cmd_buffer *rxb,
+				  struct iwl_device_cmd *cmd)
+{
+#ifdef CONFIG_IWLWIFI_DEBUG
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_sleep_notification *sleep = (void *)pkt->data;
+	IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
+		     sleep->pm_sleep_mode, sleep->pm_wakeup_src);
+#endif
+	return 0;
+}
+
+static int iwlagn_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
+					     struct iwl_rx_cmd_buffer *rxb,
+					     struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	u32 __maybe_unused len =
+		le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
+	IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
+			"notification for PM_DEBUG_STATISTIC_NOTIFIC:\n", len);
+	iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->data, len);
+	return 0;
+}
+
+static int iwlagn_rx_beacon_notif(struct iwl_priv *priv,
+				struct iwl_rx_cmd_buffer *rxb,
+				struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwlagn_beacon_notif *beacon = (void *)pkt->data;
+#ifdef CONFIG_IWLWIFI_DEBUG
+	u16 status = le16_to_cpu(beacon->beacon_notify_hdr.status.status);
+	u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
+
+	IWL_DEBUG_RX(priv, "beacon status %#x, retries:%d ibssmgr:%d "
+		"tsf:0x%.8x%.8x rate:%d\n",
+		status & TX_STATUS_MSK,
+		beacon->beacon_notify_hdr.failure_frame,
+		le32_to_cpu(beacon->ibss_mgr_status),
+		le32_to_cpu(beacon->high_tsf),
+		le32_to_cpu(beacon->low_tsf), rate);
+#endif
+
+	priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
+
+	return 0;
+}
+
+/**
+ * iwl_good_plcp_health - checks for plcp error.
+ *
+ * When the plcp error is exceeding the thresholds, reset the radio
+ * to improve the throughput.
+ */
+static bool iwlagn_good_plcp_health(struct iwl_priv *priv,
+				 struct statistics_rx_phy *cur_ofdm,
+				 struct statistics_rx_ht_phy *cur_ofdm_ht,
+				 unsigned int msecs)
+{
+	int delta;
+	int threshold = priv->plcp_delta_threshold;
+
+	if (threshold == IWL_MAX_PLCP_ERR_THRESHOLD_DISABLE) {
+		IWL_DEBUG_RADIO(priv, "plcp_err check disabled\n");
+		return true;
+	}
+
+	delta = le32_to_cpu(cur_ofdm->plcp_err) -
+		le32_to_cpu(priv->statistics.rx_ofdm.plcp_err) +
+		le32_to_cpu(cur_ofdm_ht->plcp_err) -
+		le32_to_cpu(priv->statistics.rx_ofdm_ht.plcp_err);
+
+	/* Can be negative if firmware reset statistics */
+	if (delta <= 0)
+		return true;
+
+	if ((delta * 100 / msecs) > threshold) {
+		IWL_DEBUG_RADIO(priv,
+				"plcp health threshold %u delta %d msecs %u\n",
+				threshold, delta, msecs);
+		return false;
+	}
+
+	return true;
+}
+
+int iwl_force_rf_reset(struct iwl_priv *priv, bool external)
+{
+	struct iwl_rf_reset *rf_reset;
+
+	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+		return -EAGAIN;
+
+	if (!iwl_is_any_associated(priv)) {
+		IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
+		return -ENOLINK;
+	}
+
+	rf_reset = &priv->rf_reset;
+	rf_reset->reset_request_count++;
+	if (!external && rf_reset->last_reset_jiffies &&
+	    time_after(rf_reset->last_reset_jiffies +
+		       IWL_DELAY_NEXT_FORCE_RF_RESET, jiffies)) {
+		IWL_DEBUG_INFO(priv, "RF reset rejected\n");
+		rf_reset->reset_reject_count++;
+		return -EAGAIN;
+	}
+	rf_reset->reset_success_count++;
+	rf_reset->last_reset_jiffies = jiffies;
+
+	/*
+	 * There is no easy and better way to force reset the radio,
+	 * the only known method is switching channel which will force to
+	 * reset and tune the radio.
+	 * Use internal short scan (single channel) operation to should
+	 * achieve this objective.
+	 * Driver should reset the radio when number of consecutive missed
+	 * beacon, or any other uCode error condition detected.
+	 */
+	IWL_DEBUG_INFO(priv, "perform radio reset.\n");
+	iwl_internal_short_hw_scan(priv);
+	return 0;
+}
+
+
+static void iwlagn_recover_from_statistics(struct iwl_priv *priv,
+				struct statistics_rx_phy *cur_ofdm,
+				struct statistics_rx_ht_phy *cur_ofdm_ht,
+				struct statistics_tx *tx,
+				unsigned long stamp)
+{
+	unsigned int msecs;
+
+	if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+		return;
+
+	msecs = jiffies_to_msecs(stamp - priv->rx_statistics_jiffies);
+
+	/* Only gather statistics and update time stamp when not associated */
+	if (!iwl_is_any_associated(priv))
+		return;
+
+	/* Do not check/recover when do not have enough statistics data */
+	if (msecs < 99)
+		return;
+
+	if (iwlwifi_mod_params.plcp_check &&
+	    !iwlagn_good_plcp_health(priv, cur_ofdm, cur_ofdm_ht, msecs))
+		iwl_force_rf_reset(priv, false);
+}
+
+/* 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 iwlagn_rx_calc_noise(struct iwl_priv *priv)
+{
+	struct statistics_rx_non_phy *rx_info;
+	int num_active_rx = 0;
+	int total_silence = 0;
+	int bcn_silence_a, bcn_silence_b, bcn_silence_c;
+	int last_rx_noise;
+
+	rx_info = &priv->statistics.rx_non_phy;
+
+	bcn_silence_a =
+		le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
+	bcn_silence_b =
+		le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
+	bcn_silence_c =
+		le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
+
+	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 accum_stats(__le32 *prev, __le32 *cur, __le32 *delta,
+			__le32 *max_delta, __le32 *accum, int size)
+{
+	int i;
+
+	for (i = 0;
+	     i < size / sizeof(__le32);
+	     i++, prev++, cur++, delta++, max_delta++, accum++) {
+		if (le32_to_cpu(*cur) > le32_to_cpu(*prev)) {
+			*delta = cpu_to_le32(
+				le32_to_cpu(*cur) - le32_to_cpu(*prev));
+			le32_add_cpu(accum, le32_to_cpu(*delta));
+			if (le32_to_cpu(*delta) > le32_to_cpu(*max_delta))
+				*max_delta = *delta;
+		}
+	}
+}
+
+static void
+iwlagn_accumulative_statistics(struct iwl_priv *priv,
+			    struct statistics_general_common *common,
+			    struct statistics_rx_non_phy *rx_non_phy,
+			    struct statistics_rx_phy *rx_ofdm,
+			    struct statistics_rx_ht_phy *rx_ofdm_ht,
+			    struct statistics_rx_phy *rx_cck,
+			    struct statistics_tx *tx,
+			    struct statistics_bt_activity *bt_activity)
+{
+#define ACCUM(_name)	\
+	accum_stats((__le32 *)&priv->statistics._name,		\
+		    (__le32 *)_name,				\
+		    (__le32 *)&priv->delta_stats._name,		\
+		    (__le32 *)&priv->max_delta_stats._name,	\
+		    (__le32 *)&priv->accum_stats._name,		\
+		    sizeof(*_name));
+
+	ACCUM(common);
+	ACCUM(rx_non_phy);
+	ACCUM(rx_ofdm);
+	ACCUM(rx_ofdm_ht);
+	ACCUM(rx_cck);
+	ACCUM(tx);
+	if (bt_activity)
+		ACCUM(bt_activity);
+#undef ACCUM
+}
+#else
+static inline void
+iwlagn_accumulative_statistics(struct iwl_priv *priv,
+			    struct statistics_general_common *common,
+			    struct statistics_rx_non_phy *rx_non_phy,
+			    struct statistics_rx_phy *rx_ofdm,
+			    struct statistics_rx_ht_phy *rx_ofdm_ht,
+			    struct statistics_rx_phy *rx_cck,
+			    struct statistics_tx *tx,
+			    struct statistics_bt_activity *bt_activity)
+{
+}
+#endif
+
+static int iwlagn_rx_statistics(struct iwl_priv *priv,
+			      struct iwl_rx_cmd_buffer *rxb,
+			      struct iwl_device_cmd *cmd)
+{
+	unsigned long stamp = jiffies;
+	const int reg_recalib_period = 60;
+	int change;
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
+	__le32 *flag;
+	struct statistics_general_common *common;
+	struct statistics_rx_non_phy *rx_non_phy;
+	struct statistics_rx_phy *rx_ofdm;
+	struct statistics_rx_ht_phy *rx_ofdm_ht;
+	struct statistics_rx_phy *rx_cck;
+	struct statistics_tx *tx;
+	struct statistics_bt_activity *bt_activity;
+
+	len -= sizeof(struct iwl_cmd_header); /* skip header */
+
+	IWL_DEBUG_RX(priv, "Statistics notification received (%d bytes).\n",
+		     len);
+
+	spin_lock(&priv->statistics.lock);
+
+	if (len == sizeof(struct iwl_bt_notif_statistics)) {
+		struct iwl_bt_notif_statistics *stats;
+		stats = (void *)&pkt->data;
+		flag = &stats->flag;
+		common = &stats->general.common;
+		rx_non_phy = &stats->rx.general.common;
+		rx_ofdm = &stats->rx.ofdm;
+		rx_ofdm_ht = &stats->rx.ofdm_ht;
+		rx_cck = &stats->rx.cck;
+		tx = &stats->tx;
+		bt_activity = &stats->general.activity;
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+		/* handle this exception directly */
+		priv->statistics.num_bt_kills = stats->rx.general.num_bt_kills;
+		le32_add_cpu(&priv->statistics.accum_num_bt_kills,
+			     le32_to_cpu(stats->rx.general.num_bt_kills));
+#endif
+	} else if (len == sizeof(struct iwl_notif_statistics)) {
+		struct iwl_notif_statistics *stats;
+		stats = (void *)&pkt->data;
+		flag = &stats->flag;
+		common = &stats->general.common;
+		rx_non_phy = &stats->rx.general;
+		rx_ofdm = &stats->rx.ofdm;
+		rx_ofdm_ht = &stats->rx.ofdm_ht;
+		rx_cck = &stats->rx.cck;
+		tx = &stats->tx;
+		bt_activity = NULL;
+	} else {
+		WARN_ONCE(1, "len %d doesn't match BT (%zu) or normal (%zu)\n",
+			  len, sizeof(struct iwl_bt_notif_statistics),
+			  sizeof(struct iwl_notif_statistics));
+		spin_unlock(&priv->statistics.lock);
+		return 0;
+	}
+
+	change = common->temperature != priv->statistics.common.temperature ||
+		 (*flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK) !=
+		 (priv->statistics.flag & STATISTICS_REPLY_FLG_HT40_MODE_MSK);
+
+	iwlagn_accumulative_statistics(priv, common, rx_non_phy, rx_ofdm,
+				    rx_ofdm_ht, rx_cck, tx, bt_activity);
+
+	iwlagn_recover_from_statistics(priv, rx_ofdm, rx_ofdm_ht, tx, stamp);
+
+	priv->statistics.flag = *flag;
+	memcpy(&priv->statistics.common, common, sizeof(*common));
+	memcpy(&priv->statistics.rx_non_phy, rx_non_phy, sizeof(*rx_non_phy));
+	memcpy(&priv->statistics.rx_ofdm, rx_ofdm, sizeof(*rx_ofdm));
+	memcpy(&priv->statistics.rx_ofdm_ht, rx_ofdm_ht, sizeof(*rx_ofdm_ht));
+	memcpy(&priv->statistics.rx_cck, rx_cck, sizeof(*rx_cck));
+	memcpy(&priv->statistics.tx, tx, sizeof(*tx));
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	if (bt_activity)
+		memcpy(&priv->statistics.bt_activity, bt_activity,
+			sizeof(*bt_activity));
+#endif
+
+	priv->rx_statistics_jiffies = stamp;
+
+	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)) {
+		iwlagn_rx_calc_noise(priv);
+		queue_work(priv->workqueue, &priv->run_time_calib_work);
+	}
+	if (priv->lib->temperature && change)
+		priv->lib->temperature(priv);
+
+	spin_unlock(&priv->statistics.lock);
+
+	return 0;
+}
+
+static int iwlagn_rx_reply_statistics(struct iwl_priv *priv,
+				    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;
+
+	if (le32_to_cpu(stats->flag) & UCODE_STATISTICS_CLEAR_MSK) {
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+		memset(&priv->accum_stats, 0,
+			sizeof(priv->accum_stats));
+		memset(&priv->delta_stats, 0,
+			sizeof(priv->delta_stats));
+		memset(&priv->max_delta_stats, 0,
+			sizeof(priv->max_delta_stats));
+#endif
+		IWL_DEBUG_RX(priv, "Statistics have been cleared\n");
+	}
+	iwlagn_rx_statistics(priv, rxb, cmd);
+	return 0;
+}
+
+/* Handle notification from uCode that card's power state is changing
+ * due to software, hardware, or critical temperature RFKILL */
+static int iwlagn_rx_card_state_notif(struct iwl_priv *priv,
+				    struct iwl_rx_cmd_buffer *rxb,
+				    struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_card_state_notif *card_state_notif = (void *)pkt->data;
+	u32 flags = le32_to_cpu(card_state_notif->flags);
+	unsigned long status = priv->status;
+
+	IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
+			  (flags & HW_CARD_DISABLED) ? "Kill" : "On",
+			  (flags & SW_CARD_DISABLED) ? "Kill" : "On",
+			  (flags & CT_CARD_DISABLED) ?
+			  "Reached" : "Not reached");
+
+	if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
+		     CT_CARD_DISABLED)) {
+
+		iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_SET,
+			    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+
+		iwl_write_direct32(priv->trans, HBUS_TARG_MBX_C,
+					HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
+
+		if (!(flags & RXON_CARD_DISABLED)) {
+			iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
+				    CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
+			iwl_write_direct32(priv->trans, HBUS_TARG_MBX_C,
+					HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
+		}
+		if (flags & CT_CARD_DISABLED)
+			iwl_tt_enter_ct_kill(priv);
+	}
+	if (!(flags & CT_CARD_DISABLED))
+		iwl_tt_exit_ct_kill(priv);
+
+	if (flags & HW_CARD_DISABLED)
+		set_bit(STATUS_RF_KILL_HW, &priv->status);
+	else
+		clear_bit(STATUS_RF_KILL_HW, &priv->status);
+
+
+	if (!(flags & RXON_CARD_DISABLED))
+		iwl_scan_cancel(priv);
+
+	if ((test_bit(STATUS_RF_KILL_HW, &status) !=
+	     test_bit(STATUS_RF_KILL_HW, &priv->status)))
+		wiphy_rfkill_set_hw_state(priv->hw->wiphy,
+			test_bit(STATUS_RF_KILL_HW, &priv->status));
+	else
+		wake_up(&priv->trans->wait_command_queue);
+	return 0;
+}
+
+static int iwlagn_rx_missed_beacon_notif(struct iwl_priv *priv,
+				       struct iwl_rx_cmd_buffer *rxb,
+				       struct iwl_device_cmd *cmd)
+
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_missed_beacon_notif *missed_beacon = (void *)pkt->data;
+
+	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);
+	}
+	return 0;
+}
+
+/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
+ * This will be used later in iwl_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
+static int iwlagn_rx_reply_rx_phy(struct iwl_priv *priv,
+				struct iwl_rx_cmd_buffer *rxb,
+				struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+
+	priv->last_phy_res_valid = true;
+	memcpy(&priv->last_phy_res, pkt->data,
+	       sizeof(struct iwl_rx_phy_res));
+	return 0;
+}
+
+/*
+ * returns non-zero if packet should be dropped
+ */
+static int iwlagn_set_decrypted_flag(struct iwl_priv *priv,
+				  struct ieee80211_hdr *hdr,
+				  u32 decrypt_res,
+				  struct ieee80211_rx_status *stats)
+{
+	u16 fc = le16_to_cpu(hdr->frame_control);
+
+	/*
+	 * All contexts have the same setting here due to it being
+	 * a module parameter, so OK to check any context.
+	 */
+	if (priv->contexts[IWL_RXON_CTX_BSS].active.filter_flags &
+						RXON_FILTER_DIS_DECRYPT_MSK)
+		return 0;
+
+	if (!(fc & IEEE80211_FCTL_PROTECTED))
+		return 0;
+
+	IWL_DEBUG_RX(priv, "decrypt_res:0x%x\n", decrypt_res);
+	switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
+	case RX_RES_STATUS_SEC_TYPE_TKIP:
+		/* The uCode has got a bad phase 1 Key, pushes the packet.
+		 * Decryption will be done in SW. */
+		if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
+		    RX_RES_STATUS_BAD_KEY_TTAK)
+			break;
+
+	case RX_RES_STATUS_SEC_TYPE_WEP:
+		if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
+		    RX_RES_STATUS_BAD_ICV_MIC) {
+			/* bad ICV, the packet is destroyed since the
+			 * decryption is inplace, drop it */
+			IWL_DEBUG_RX(priv, "Packet destroyed\n");
+			return -1;
+		}
+	case RX_RES_STATUS_SEC_TYPE_CCMP:
+		if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
+		    RX_RES_STATUS_DECRYPT_OK) {
+			IWL_DEBUG_RX(priv, "hw decrypt successfully!!!\n");
+			stats->flag |= RX_FLAG_DECRYPTED;
+		}
+		break;
+
+	default:
+		break;
+	}
+	return 0;
+}
+
+static void iwlagn_pass_packet_to_mac80211(struct iwl_priv *priv,
+					struct ieee80211_hdr *hdr,
+					u16 len,
+					u32 ampdu_status,
+					struct iwl_rx_cmd_buffer *rxb,
+					struct ieee80211_rx_status *stats)
+{
+	struct sk_buff *skb;
+	__le16 fc = hdr->frame_control;
+	struct iwl_rxon_context *ctx;
+	unsigned int hdrlen, fraglen;
+
+	/* We only process data packets if the interface is open */
+	if (unlikely(!priv->is_open)) {
+		IWL_DEBUG_DROP_LIMIT(priv,
+		    "Dropping packet while interface is not open.\n");
+		return;
+	}
+
+	/* In case of HW accelerated crypto and bad decryption, drop */
+	if (!iwlwifi_mod_params.sw_crypto &&
+	    iwlagn_set_decrypted_flag(priv, hdr, ampdu_status, stats))
+		return;
+
+	/* Dont use dev_alloc_skb(), we'll have enough headroom once
+	 * ieee80211_hdr pulled.
+	 */
+	skb = alloc_skb(128, GFP_ATOMIC);
+	if (!skb) {
+		IWL_ERR(priv, "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);
+	}
+
+	/*
+	* Wake any queues that were stopped due to a passive channel tx
+	* failure. This can happen because the regulatory enforcement in
+	* the device waits for a beacon before allowing transmission,
+	* sometimes even after already having transmitted frames for the
+	* association because the new RXON may reset the information.
+	*/
+	if (unlikely(ieee80211_is_beacon(fc) && priv->passive_no_rx)) {
+		for_each_context(priv, ctx) {
+			if (!ether_addr_equal(hdr->addr3,
+					      ctx->active.bssid_addr))
+				continue;
+			iwlagn_lift_passive_no_rx(priv);
+		}
+	}
+
+	memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats));
+
+	ieee80211_rx(priv->hw, skb);
+}
+
+static u32 iwlagn_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in)
+{
+	u32 decrypt_out = 0;
+
+	if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) ==
+					RX_RES_STATUS_STATION_FOUND)
+		decrypt_out |= (RX_RES_STATUS_STATION_FOUND |
+				RX_RES_STATUS_NO_STATION_INFO_MISMATCH);
+
+	decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK);
+
+	/* packet was not encrypted */
+	if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
+					RX_RES_STATUS_SEC_TYPE_NONE)
+		return decrypt_out;
+
+	/* packet was encrypted with unknown alg */
+	if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) ==
+					RX_RES_STATUS_SEC_TYPE_ERR)
+		return decrypt_out;
+
+	/* decryption was not done in HW */
+	if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) !=
+					RX_MPDU_RES_STATUS_DEC_DONE_MSK)
+		return decrypt_out;
+
+	switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) {
+
+	case RX_RES_STATUS_SEC_TYPE_CCMP:
+		/* alg is CCM: check MIC only */
+		if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK))
+			/* Bad MIC */
+			decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
+		else
+			decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
+
+		break;
+
+	case RX_RES_STATUS_SEC_TYPE_TKIP:
+		if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) {
+			/* Bad TTAK */
+			decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK;
+			break;
+		}
+		/* fall through if TTAK OK */
+	default:
+		if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK))
+			decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC;
+		else
+			decrypt_out |= RX_RES_STATUS_DECRYPT_OK;
+		break;
+	}
+
+	IWL_DEBUG_RX(priv, "decrypt_in:0x%x  decrypt_out = 0x%x\n",
+					decrypt_in, decrypt_out);
+
+	return decrypt_out;
+}
+
+/* Calc max signal level (dBm) among 3 possible receivers */
+static int iwlagn_calc_rssi(struct iwl_priv *priv,
+			     struct iwl_rx_phy_res *rx_resp)
+{
+	/* data from PHY/DSP regarding signal strength, etc.,
+	 *   contents are always there, not configurable by host
+	 */
+	struct iwlagn_non_cfg_phy *ncphy =
+		(struct iwlagn_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
+	u32 val, rssi_a, rssi_b, rssi_c, max_rssi;
+	u8 agc;
+
+	val  = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_AGC_IDX]);
+	agc = (val & IWLAGN_OFDM_AGC_MSK) >> IWLAGN_OFDM_AGC_BIT_POS;
+
+	/* Find max rssi among 3 possible receivers.
+	 * These values are measured by the digital signal processor (DSP).
+	 * They should stay fairly constant even as the signal strength varies,
+	 *   if the radio's automatic gain control (AGC) is working right.
+	 * AGC value (see below) will provide the "interesting" info.
+	 */
+	val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_AB_IDX]);
+	rssi_a = (val & IWLAGN_OFDM_RSSI_INBAND_A_BITMSK) >>
+		IWLAGN_OFDM_RSSI_A_BIT_POS;
+	rssi_b = (val & IWLAGN_OFDM_RSSI_INBAND_B_BITMSK) >>
+		IWLAGN_OFDM_RSSI_B_BIT_POS;
+	val = le32_to_cpu(ncphy->non_cfg_phy[IWLAGN_RX_RES_RSSI_C_IDX]);
+	rssi_c = (val & IWLAGN_OFDM_RSSI_INBAND_C_BITMSK) >>
+		IWLAGN_OFDM_RSSI_C_BIT_POS;
+
+	max_rssi = max_t(u32, rssi_a, rssi_b);
+	max_rssi = max_t(u32, max_rssi, rssi_c);
+
+	IWL_DEBUG_STATS(priv, "Rssi In A %d B %d C %d Max %d AGC dB %d\n",
+		rssi_a, rssi_b, rssi_c, max_rssi, agc);
+
+	/* dBm = max_rssi dB - agc dB - constant.
+	 * Higher AGC (higher radio gain) means lower signal. */
+	return max_rssi - agc - IWLAGN_RSSI_OFFSET;
+}
+
+/* Called for REPLY_RX (legacy ABG frames), or
+ * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
+static int iwlagn_rx_reply_rx(struct iwl_priv *priv,
+			    struct iwl_rx_cmd_buffer *rxb,
+			    struct iwl_device_cmd *cmd)
+{
+	struct ieee80211_hdr *header;
+	struct ieee80211_rx_status rx_status;
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_rx_phy_res *phy_res;
+	__le32 rx_pkt_status;
+	struct iwl_rx_mpdu_res_start *amsdu;
+	u32 len;
+	u32 ampdu_status;
+	u32 rate_n_flags;
+
+	/**
+	 * REPLY_RX and REPLY_RX_MPDU_CMD are handled differently.
+	 *	REPLY_RX: physical layer info is in this buffer
+	 *	REPLY_RX_MPDU_CMD: physical layer info was sent in separate
+	 *		command and cached in priv->last_phy_res
+	 *
+	 * Here we set up local variables depending on which command is
+	 * received.
+	 */
+	if (pkt->hdr.cmd == REPLY_RX) {
+		phy_res = (struct iwl_rx_phy_res *)pkt->data;
+		header = (struct ieee80211_hdr *)(pkt->data + sizeof(*phy_res)
+				+ phy_res->cfg_phy_cnt);
+
+		len = le16_to_cpu(phy_res->byte_count);
+		rx_pkt_status = *(__le32 *)(pkt->data + sizeof(*phy_res) +
+				phy_res->cfg_phy_cnt + len);
+		ampdu_status = le32_to_cpu(rx_pkt_status);
+	} else {
+		if (!priv->last_phy_res_valid) {
+			IWL_ERR(priv, "MPDU frame without cached PHY data\n");
+			return 0;
+		}
+		phy_res = &priv->last_phy_res;
+		amsdu = (struct iwl_rx_mpdu_res_start *)pkt->data;
+		header = (struct ieee80211_hdr *)(pkt->data + sizeof(*amsdu));
+		len = le16_to_cpu(amsdu->byte_count);
+		rx_pkt_status = *(__le32 *)(pkt->data + sizeof(*amsdu) + len);
+		ampdu_status = iwlagn_translate_rx_status(priv,
+						le32_to_cpu(rx_pkt_status));
+	}
+
+	if ((unlikely(phy_res->cfg_phy_cnt > 20))) {
+		IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d\n",
+				phy_res->cfg_phy_cnt);
+		return 0;
+	}
+
+	if (!(rx_pkt_status & RX_RES_STATUS_NO_CRC32_ERROR) ||
+	    !(rx_pkt_status & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
+		IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n",
+				le32_to_cpu(rx_pkt_status));
+		return 0;
+	}
+
+	/* This will be used in several places later */
+	rate_n_flags = le32_to_cpu(phy_res->rate_n_flags);
+
+	/* rx_status carries information about the packet to mac80211 */
+	rx_status.mactime = le64_to_cpu(phy_res->timestamp);
+	rx_status.band = (phy_res->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
+				IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
+	rx_status.freq =
+		ieee80211_channel_to_frequency(le16_to_cpu(phy_res->channel),
+					       rx_status.band);
+	rx_status.rate_idx =
+		iwlagn_hwrate_to_mac80211_idx(rate_n_flags, rx_status.band);
+	rx_status.flag = 0;
+
+	/* TSF isn't reliable. In order to allow smooth user experience,
+	 * this W/A doesn't propagate it to the mac80211 */
+	/*rx_status.flag |= RX_FLAG_MACTIME_MPDU;*/
+
+	priv->ucode_beacon_time = le32_to_cpu(phy_res->beacon_time_stamp);
+
+	/* Find max signal strength (dBm) among 3 antenna/receiver chains */
+	rx_status.signal = iwlagn_calc_rssi(priv, phy_res);
+
+	IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, TSF %llu\n",
+		rx_status.signal, (unsigned long long)rx_status.mactime);
+
+	/*
+	 * "antenna number"
+	 *
+	 * It seems that the antenna field in the phy flags value
+	 * is actually a bit field. This is undefined by radiotap,
+	 * it wants an actual antenna number but I always get "7"
+	 * for most legacy frames I receive indicating that the
+	 * same frame was received on all three RX chains.
+	 *
+	 * I think this field should be removed in favor of a
+	 * new 802.11n radiotap field "RX chains" that is defined
+	 * as a bitmask.
+	 */
+	rx_status.antenna =
+		(le16_to_cpu(phy_res->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA_MSK)
+		>> RX_RES_PHY_FLAGS_ANTENNA_POS;
+
+	/* set the preamble flag if appropriate */
+	if (phy_res->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
+		rx_status.flag |= RX_FLAG_SHORTPRE;
+
+	/* Set up the HT phy flags */
+	if (rate_n_flags & RATE_MCS_HT_MSK)
+		rx_status.flag |= RX_FLAG_HT;
+	if (rate_n_flags & RATE_MCS_HT40_MSK)
+		rx_status.flag |= RX_FLAG_40MHZ;
+	if (rate_n_flags & RATE_MCS_SGI_MSK)
+		rx_status.flag |= RX_FLAG_SHORT_GI;
+	if (rate_n_flags & RATE_MCS_GF_MSK)
+		rx_status.flag |= RX_FLAG_HT_GF;
+
+	iwlagn_pass_packet_to_mac80211(priv, header, len, ampdu_status,
+				    rxb, &rx_status);
+	return 0;
+}
+
+static int iwlagn_rx_noa_notification(struct iwl_priv *priv,
+				      struct iwl_rx_cmd_buffer *rxb,
+				      struct iwl_device_cmd *cmd)
+{
+	struct iwl_wipan_noa_data *new_data, *old_data;
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_wipan_noa_notification *noa_notif = (void *)pkt->data;
+
+	/* no condition -- we're in softirq */
+	old_data = rcu_dereference_protected(priv->noa_data, true);
+
+	if (noa_notif->noa_active) {
+		u32 len = le16_to_cpu(noa_notif->noa_attribute.length);
+		u32 copylen = len;
+
+		/* EID, len, OUI, subtype */
+		len += 1 + 1 + 3 + 1;
+		/* P2P id, P2P length */
+		len += 1 + 2;
+		copylen += 1 + 2;
+
+		new_data = kmalloc(sizeof(*new_data) + len, GFP_ATOMIC);
+		if (new_data) {
+			new_data->length = len;
+			new_data->data[0] = WLAN_EID_VENDOR_SPECIFIC;
+			new_data->data[1] = len - 2; /* not counting EID, len */
+			new_data->data[2] = (WLAN_OUI_WFA >> 16) & 0xff;
+			new_data->data[3] = (WLAN_OUI_WFA >> 8) & 0xff;
+			new_data->data[4] = (WLAN_OUI_WFA >> 0) & 0xff;
+			new_data->data[5] = WLAN_OUI_TYPE_WFA_P2P;
+			memcpy(&new_data->data[6], &noa_notif->noa_attribute,
+			       copylen);
+		}
+	} else
+		new_data = NULL;
+
+	rcu_assign_pointer(priv->noa_data, new_data);
+
+	if (old_data)
+		kfree_rcu(old_data, rcu_head);
+
+	return 0;
+}
+
+/**
+ * iwl_setup_rx_handlers - Initialize Rx handler callbacks
+ *
+ * Setup the RX handlers for each of the reply types sent from the uCode
+ * to the host.
+ */
+void iwl_setup_rx_handlers(struct iwl_priv *priv)
+{
+	int (**handlers)(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb,
+			       struct iwl_device_cmd *cmd);
+
+	handlers = priv->rx_handlers;
+
+	handlers[REPLY_ERROR]			= iwlagn_rx_reply_error;
+	handlers[CHANNEL_SWITCH_NOTIFICATION]	= iwlagn_rx_csa;
+	handlers[SPECTRUM_MEASURE_NOTIFICATION]	=
+		iwlagn_rx_spectrum_measure_notif;
+	handlers[PM_SLEEP_NOTIFICATION]		= iwlagn_rx_pm_sleep_notif;
+	handlers[PM_DEBUG_STATISTIC_NOTIFIC]	=
+		iwlagn_rx_pm_debug_statistics_notif;
+	handlers[BEACON_NOTIFICATION]		= iwlagn_rx_beacon_notif;
+	handlers[REPLY_ADD_STA]			= iwl_add_sta_callback;
+
+	handlers[REPLY_WIPAN_NOA_NOTIFICATION]	= iwlagn_rx_noa_notification;
+
+	/*
+	 * The same handler is used for both the REPLY to a discrete
+	 * statistics request from the host as well as for the periodic
+	 * statistics notifications (after received beacons) from the uCode.
+	 */
+	handlers[REPLY_STATISTICS_CMD]		= iwlagn_rx_reply_statistics;
+	handlers[STATISTICS_NOTIFICATION]	= iwlagn_rx_statistics;
+
+	iwl_setup_rx_scan_handlers(priv);
+
+	handlers[CARD_STATE_NOTIFICATION]	= iwlagn_rx_card_state_notif;
+	handlers[MISSED_BEACONS_NOTIFICATION]	=
+		iwlagn_rx_missed_beacon_notif;
+
+	/* Rx handlers */
+	handlers[REPLY_RX_PHY_CMD]		= iwlagn_rx_reply_rx_phy;
+	handlers[REPLY_RX_MPDU_CMD]		= iwlagn_rx_reply_rx;
+
+	/* block ack */
+	handlers[REPLY_COMPRESSED_BA]		=
+		iwlagn_rx_reply_compressed_ba;
+
+	priv->rx_handlers[REPLY_TX] = iwlagn_rx_reply_tx;
+
+	/* set up notification wait support */
+	iwl_notification_wait_init(&priv->notif_wait);
+
+	/* Set up BT Rx handlers */
+	if (priv->cfg->bt_params)
+		iwlagn_bt_rx_handler_setup(priv);
+}
+
+int iwl_rx_dispatch(struct iwl_op_mode *op_mode, struct iwl_rx_cmd_buffer *rxb,
+		    struct iwl_device_cmd *cmd)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
+	void (*pre_rx_handler)(struct iwl_priv *,
+			       struct iwl_rx_cmd_buffer *);
+	int err = 0;
+
+	/*
+	 * Do the notification wait before RX handlers so
+	 * even if the RX handler consumes the RXB we have
+	 * access to it in the notification wait entry.
+	 */
+	iwl_notification_wait_notify(&priv->notif_wait, pkt);
+
+	/* RX data may be forwarded to userspace (using pre_rx_handler) in one
+	 * of two cases: the first, that the user owns the uCode through
+	 * testmode - in such case the pre_rx_handler is set and no further
+	 * processing takes place. The other case is when the user want to
+	 * monitor the rx w/o affecting the regular flow - the pre_rx_handler
+	 * will be set but the ownership flag != IWL_OWNERSHIP_TM and the flow
+	 * continues.
+	 * We need to use ACCESS_ONCE to prevent a case where the handler
+	 * changes between the check and the call.
+	 */
+	pre_rx_handler = ACCESS_ONCE(priv->pre_rx_handler);
+	if (pre_rx_handler)
+		pre_rx_handler(priv, rxb);
+	if (priv->ucode_owner != IWL_OWNERSHIP_TM) {
+		/* Based on type of command response or notification,
+		 *   handle those that need handling via function in
+		 *   rx_handlers table.  See iwl_setup_rx_handlers() */
+		if (priv->rx_handlers[pkt->hdr.cmd]) {
+			priv->rx_handlers_stats[pkt->hdr.cmd]++;
+			err = priv->rx_handlers[pkt->hdr.cmd] (priv, rxb, cmd);
+		} else {
+			/* No handling needed */
+			IWL_DEBUG_RX(priv, "No handler needed for %s, 0x%02x\n",
+				     iwl_dvm_get_cmd_string(pkt->hdr.cmd),
+				     pkt->hdr.cmd);
+		}
+	}
+	return err;
+}