diff --git a/wifi/legacy_headers/Android.bp b/wifi/legacy_headers/Android.bp
new file mode 100644
index 0000000..725d42c
--- /dev/null
+++ b/wifi/legacy_headers/Android.bp
@@ -0,0 +1,40 @@
+// Copyright (C) 2024 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_library_headers {
+    name: "wifi_legacy_headers",
+    vendor_available: true,
+    export_include_dirs: ["include"],
+
+    header_libs: ["libcutils_headers"],
+    export_header_lib_headers: ["libcutils_headers"],
+}
+
+cc_library_shared {
+    name: "wifi_legacy",
+    vendor_available: true,
+
+    header_libs: [
+        "wifi_legacy_headers",
+    ],
+    export_header_lib_headers: ["wifi_legacy_headers"],
+
+    export_include_dirs: ["include"],
+
+    cflags: [
+        "-DQEMU_HARDWARE",
+        "-Wall",
+        "-Werror",
+    ],
+}
diff --git a/wifi/legacy_headers/include/hardware_legacy/gscan.h b/wifi/legacy_headers/include/hardware_legacy/gscan.h
new file mode 100644
index 0000000..d5d8b9c
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/gscan.h
@@ -0,0 +1,430 @@
+#include "wifi_hal.h"
+
+#ifndef __WIFI_HAL_GSCAN_H__
+#define __WIFI_HAL_GSCAN_H__
+
+// Define static_assert() unless already defined by compiler.
+#ifndef __has_feature
+    #define __has_feature(__x) 0
+#endif
+#if !(__has_feature(cxx_static_assert)) && !defined(static_assert)
+        #define static_assert(__b, __m) \
+                extern int compile_time_assert_failed[ ( __b ) ? 1 : -1 ]  \
+                                                                   __attribute__( ( unused ) );
+#endif
+
+/* AP Scans */
+
+typedef enum {
+    WIFI_BAND_UNSPECIFIED,
+    WIFI_BAND_BG = 1,                       // 2.4 GHz
+    WIFI_BAND_A = 2,                        // 5 GHz without DFS
+    WIFI_BAND_A_DFS = 4,                    // 5 GHz DFS only
+    WIFI_BAND_A_WITH_DFS = 6,               // 5 GHz with DFS
+    WIFI_BAND_ABG = 3,                      // 2.4 GHz + 5 GHz; no DFS
+    WIFI_BAND_ABG_WITH_DFS = 7,             // 2.4 GHz + 5 GHz with DFS
+} wifi_band;
+
+#define MAX_CHANNELS                16
+#define MAX_BUCKETS                 16
+#define MAX_HOTLIST_APS             128
+#define MAX_SIGNIFICANT_CHANGE_APS  64
+#define MAX_EPNO_NETWORKS           64
+#define MAX_HOTLIST_SSID            8
+#define MAX_AP_CACHE_PER_SCAN       32
+
+wifi_error wifi_get_valid_channels(wifi_interface_handle handle,
+        int band, int max_channels, wifi_channel *channels, int *num_channels);
+
+typedef struct {
+    int max_scan_cache_size;                 // total space allocated for scan (in bytes)
+    int max_scan_buckets;                    // maximum number of channel buckets
+    int max_ap_cache_per_scan;               // maximum number of APs that can be stored per scan
+    int max_rssi_sample_size;                // number of RSSI samples used for averaging RSSI
+    int max_scan_reporting_threshold;        // max possible report_threshold as described
+                                             // in wifi_scan_cmd_params
+    int max_hotlist_bssids;                  // maximum number of entries for hotlist BSSIDs
+    int max_hotlist_ssids;                   // maximum number of entries for hotlist SSIDs
+    int max_significant_wifi_change_aps;     // maximum number of entries for
+                                             // significant wifi change APs
+    int max_bssid_history_entries;           // number of BSSID/RSSI entries that device can hold
+    int max_number_epno_networks;            // max number of epno entries
+    int max_number_epno_networks_by_ssid;    // max number of epno entries if ssid is specified,
+                                             // that is, epno entries for which an exact match is
+                                             // required, or entries corresponding to hidden ssids
+    int max_number_of_white_listed_ssid;     // max number of white listed SSIDs, M target is 2 to 4
+} wifi_gscan_capabilities;
+
+wifi_error wifi_get_gscan_capabilities(wifi_interface_handle handle,
+        wifi_gscan_capabilities *capabilities);
+
+typedef enum {
+    WIFI_SCAN_RESULTS_AVAILABLE,   // reported when REPORT_EVENTS_EACH_SCAN is set and a scan
+                                   // completes. WIFI_SCAN_THRESHOLD_NUM_SCANS or
+                                   // WIFI_SCAN_THRESHOLD_PERCENT can be reported instead if the
+                                   // reason for the event is available; however, at most one of
+                                   // these events should be reported per scan. If there are
+                                   // multiple buckets that were scanned this period and one has the
+                                   // EACH_SCAN flag set then this event should be prefered.
+    WIFI_SCAN_THRESHOLD_NUM_SCANS, // can be reported when REPORT_EVENTS_EACH_SCAN is not set and
+                                   // report_threshold_num_scans is reached.
+    WIFI_SCAN_THRESHOLD_PERCENT,   // can be reported when REPORT_EVENTS_EACH_SCAN is not set and
+                                   // report_threshold_percent is reached.
+    WIFI_SCAN_FAILED,              // reported when currently executing gscans have failed.
+                                   // start_gscan will need to be called again in order to continue
+                                   // scanning. This is intended to indicate abnormal scan
+                                   // terminations (not those as a result of stop_gscan).
+} wifi_scan_event;
+
+
+/* Format of information elements found in the beacon */
+typedef struct {
+    byte id;                            // element identifier
+    byte len;                           // number of bytes to follow
+    byte data[];
+} wifi_information_element;
+
+typedef struct {
+    wifi_timestamp ts;                  // time since boot (in microsecond) when the result was
+                                        // retrieved
+    char ssid[32+1];                    // null terminated
+    mac_addr bssid;
+    wifi_channel channel;               // channel frequency in MHz
+    wifi_rssi rssi;                     // in db
+    wifi_timespan rtt;                  // in nanoseconds
+    wifi_timespan rtt_sd;               // standard deviation in rtt
+    unsigned short beacon_period;       // period advertised in the beacon
+    unsigned short capability;          // capabilities advertised in the beacon
+    unsigned int ie_length;             // size of the ie_data blob
+    char         ie_data[1];            // blob of all the information elements found in the
+                                        // beacon; this data should be a packed list of
+                                        // wifi_information_element objects, one after the other.
+    // other fields
+} wifi_scan_result;
+
+static_assert(MAX_BUCKETS <= 8 * sizeof(unsigned),
+        "The buckets_scanned bitset is represented by an unsigned int and cannot support this many "
+        "buckets on this platform.");
+typedef struct {
+    /* reported when each probe response is received, if report_events
+     * enabled in wifi_scan_cmd_params. buckets_scanned is a bitset of the
+     * buckets that are currently being scanned. See the buckets_scanned field
+     * in the wifi_cached_scan_results struct for more details.
+     */
+    void (*on_full_scan_result) (wifi_request_id id, wifi_scan_result *result,
+                                 unsigned buckets_scanned);
+
+    /* indicates progress of scanning statemachine */
+    void (*on_scan_event) (wifi_request_id id, wifi_scan_event event);
+
+} wifi_scan_result_handler;
+
+typedef struct {
+    wifi_channel channel;               // frequency
+    int dwellTimeMs;                    // dwell time hint
+    int passive;                        // 0 => active, 1 => passive scan; ignored for DFS
+    /* Add channel class */
+} wifi_scan_channel_spec;
+
+#define REPORT_EVENTS_EACH_SCAN        (1 << 0)
+#define REPORT_EVENTS_FULL_RESULTS     (1 << 1)
+#define REPORT_EVENTS_NO_BATCH         (1 << 2)
+
+typedef struct {
+    int bucket;                         // bucket index, 0 based
+    wifi_band band;                     // when UNSPECIFIED, use channel list
+    int period;                         // desired period, in millisecond; if this is too
+                                        // low, the firmware should choose to generate results as
+                                        // fast as it can instead of failing the command.
+                                        // for exponential backoff bucket this is the min_period
+    /* report_events semantics -
+     *  This is a bit field; which defines following bits -
+     *  REPORT_EVENTS_EACH_SCAN    => report a scan completion event after scan. If this is not set
+     *                                 then scan completion events should be reported if
+     *                                 report_threshold_percent or report_threshold_num_scans is
+     *                                 reached.
+     *  REPORT_EVENTS_FULL_RESULTS => forward scan results (beacons/probe responses + IEs)
+     *                                 in real time to HAL, in addition to completion events
+     *                                 Note: To keep backward compatibility, fire completion
+     *                                 events regardless of REPORT_EVENTS_EACH_SCAN.
+     *  REPORT_EVENTS_NO_BATCH     => controls if scans for this bucket should be placed in the
+     *                                 history buffer
+     */
+    byte report_events;
+    int max_period; // if max_period is non zero or different than period, then this bucket is
+                    // an exponential backoff bucket and the scan period will grow exponentially
+                    // as per formula: actual_period(N) = period * (base ^ (N/step_count))
+                    // to a maximum period of max_period
+    int base;       // for exponential back off bucket: multiplier: new_period=old_period*base
+    int step_count; // for exponential back off bucket, number of scans to perform for a given
+                    // period
+
+    int num_channels;
+    // channels to scan; these may include DFS channels
+    // Note that a given channel may appear in multiple buckets
+    wifi_scan_channel_spec channels[MAX_CHANNELS];
+} wifi_scan_bucket_spec;
+
+typedef struct {
+    int base_period;                    // base timer period in ms
+    int max_ap_per_scan;                // number of access points to store in each scan entry in
+                                        // the BSSID/RSSI history buffer (keep the highest RSSI
+                                        // access points)
+    int report_threshold_percent;       // in %, when scan buffer is this much full, wake up apps
+                                        // processor
+    int report_threshold_num_scans;     // in number of scans, wake up AP after these many scans
+    int num_buckets;
+    wifi_scan_bucket_spec buckets[MAX_BUCKETS];
+} wifi_scan_cmd_params;
+
+/*
+ * Start periodic GSCAN
+ * When this is called all requested buckets should be scanned, starting the beginning of the cycle
+ *
+ * For example:
+ * If there are two buckets specified
+ *  - Bucket 1: period=10s
+ *  - Bucket 2: period=20s
+ *  - Bucket 3: period=30s
+ * Then the following scans should occur
+ *  - t=0  buckets 1, 2, and 3 are scanned
+ *  - t=10 bucket 1 is scanned
+ *  - t=20 bucket 1 and 2 are scanned
+ *  - t=30 bucket 1 and 3 are scanned
+ *  - t=40 bucket 1 and 2 are scanned
+ *  - t=50 bucket 1 is scanned
+ *  - t=60 buckets 1, 2, and 3 are scanned
+ *  - and the patter repeats
+ *
+ * If any scan does not occur or is incomplete (error, interrupted, etc) then a cached scan result
+ * should still be recorded with the WIFI_SCAN_FLAG_INTERRUPTED flag set.
+ */
+wifi_error wifi_start_gscan(wifi_request_id id, wifi_interface_handle iface,
+        wifi_scan_cmd_params params, wifi_scan_result_handler handler);
+
+/* Stop periodic GSCAN */
+wifi_error wifi_stop_gscan(wifi_request_id id, wifi_interface_handle iface);
+
+typedef enum {
+    WIFI_SCAN_FLAG_INTERRUPTED = 1      // Indicates that scan results are not complete because
+                                        // probes were not sent on some channels
+} wifi_scan_flags;
+
+/* Get the GSCAN cached scan results */
+typedef struct {
+    int scan_id;                                     // a unique identifier for the scan unit
+    int flags;                                       // a bitmask with additional
+                                                     // information about scan.
+    unsigned buckets_scanned;                        // a bitset of the buckets that were scanned.
+                                                     // for example a value of 13 (0b1101) would
+                                                     // indicate that buckets 0, 2 and 3 were
+                                                     // scanned to produce this list of results.
+                                                     // should be set to 0 if this information is
+                                                     // not available.
+    int num_results;                                 // number of bssids retrieved by the scan
+    wifi_scan_result results[MAX_AP_CACHE_PER_SCAN]; // scan results - one for each bssid
+} wifi_cached_scan_results;
+
+wifi_error wifi_get_cached_gscan_results(wifi_interface_handle iface, byte flush,
+        int max, wifi_cached_scan_results *results, int *num);
+
+/* BSSID Hotlist */
+typedef struct {
+    void (*on_hotlist_ap_found)(wifi_request_id id,
+            unsigned num_results, wifi_scan_result *results);
+    void (*on_hotlist_ap_lost)(wifi_request_id id,
+            unsigned num_results, wifi_scan_result *results);
+} wifi_hotlist_ap_found_handler;
+
+typedef struct {
+    mac_addr  bssid;                    // AP BSSID
+    wifi_rssi low;                      // low threshold
+    wifi_rssi high;                     // high threshold
+} ap_threshold_param;
+
+typedef struct {
+    int lost_ap_sample_size;
+    int num_bssid;                                 // number of hotlist APs
+    ap_threshold_param ap[MAX_HOTLIST_APS];     // hotlist APs
+} wifi_bssid_hotlist_params;
+
+/* Set the BSSID Hotlist */
+wifi_error wifi_set_bssid_hotlist(wifi_request_id id, wifi_interface_handle iface,
+        wifi_bssid_hotlist_params params, wifi_hotlist_ap_found_handler handler);
+
+/* Clear the BSSID Hotlist */
+wifi_error wifi_reset_bssid_hotlist(wifi_request_id id, wifi_interface_handle iface);
+
+/* SSID Hotlist */
+typedef struct {
+    void (*on_hotlist_ssid_found)(wifi_request_id id,
+            unsigned num_results, wifi_scan_result *results);
+    void (*on_hotlist_ssid_lost)(wifi_request_id id,
+            unsigned num_results, wifi_scan_result *results);
+} wifi_hotlist_ssid_handler;
+
+typedef struct {
+    char  ssid[32+1];                   // SSID
+    wifi_band band;                     // band for this set of threshold params
+    wifi_rssi low;                      // low threshold
+    wifi_rssi high;                     // high threshold
+} ssid_threshold_param;
+
+typedef struct {
+    int lost_ssid_sample_size;
+    int num_ssid;                                   // number of hotlist SSIDs
+    ssid_threshold_param ssid[MAX_HOTLIST_SSID];    // hotlist SSIDs
+} wifi_ssid_hotlist_params;
+
+/* Significant wifi change */
+typedef struct {
+    mac_addr bssid;                     // BSSID
+    wifi_channel channel;               // channel frequency in MHz
+    int num_rssi;                       // number of rssi samples
+    wifi_rssi rssi[];                   // RSSI history in db
+} wifi_significant_change_result;
+
+typedef struct {
+    void (*on_significant_change)(wifi_request_id id,
+            unsigned num_results, wifi_significant_change_result **results);
+} wifi_significant_change_handler;
+
+// The sample size parameters in the wifi_significant_change_params structure
+// represent the number of occurence of a g-scan where the BSSID was seen and RSSI was
+// collected for that BSSID, or, the BSSID was expected to be seen and didn't.
+// for instance: lost_ap_sample_size : number of time a g-scan was performed on the
+// channel the BSSID was seen last, and the BSSID was not seen during those g-scans
+typedef struct {
+    int rssi_sample_size;               // number of samples for averaging RSSI
+    int lost_ap_sample_size;            // number of samples to confirm AP loss
+    int min_breaching;                  // number of APs breaching threshold
+    int num_bssid;                         // max 64
+    ap_threshold_param ap[MAX_SIGNIFICANT_CHANGE_APS];
+} wifi_significant_change_params;
+
+/* Set the Signifcant AP change list */
+wifi_error wifi_set_significant_change_handler(wifi_request_id id, wifi_interface_handle iface,
+        wifi_significant_change_params params, wifi_significant_change_handler handler);
+
+/* Clear the Signifcant AP change list */
+wifi_error wifi_reset_significant_change_handler(wifi_request_id id, wifi_interface_handle iface);
+
+/* Random MAC OUI for PNO */
+wifi_error wifi_set_scanning_mac_oui(wifi_interface_handle handle, oui scan_oui);
+
+
+// Enhanced PNO:
+// Enhanced PNO feature is expected to be enabled all of the time (e.g. screen lit) and may thus
+// require firmware to store a large number of networks, covering the whole list of known networks.
+// Therefore, it is acceptable for firmware to store a crc24, crc32 or other short hash of the SSID,
+// such that a low but non-zero probability of collision exist. With that scheme it should be
+// possible for firmware to keep an entry as small as 4 bytes for each pno network.
+// For instance, a firmware pn0 entry can be implemented in the form of:
+//          PNO ENTRY = crc24(3 bytes) | flags>>3 (5 bits) | auth flags(3 bits)
+//
+// No scans should be automatically performed by the chip. Instead all scan results from gscan
+// should be scored and the wifi_epno_handler on_network_found callback should be called with
+// the scan results.
+//
+// A PNO network shall be reported once, that is, once a network is reported by firmware
+// its entry shall be marked as "done" until framework calls wifi_set_epno_list again.
+// Calling wifi_set_epno_list shall reset the "done" status of pno networks in firmware.
+//
+// A network should only be considered found if its RSSI is above the minimum RSSI for its
+// frequency range (min5GHz_rssi and min24GHz_rssi for 5GHz and 2.4GHz networks respectively).
+// When disconnected the list of scan results should be returned if any network is found.
+// When connected the scan results shall be reported only if the score of any network in the scan
+// is greater than that of the currently connected BSSID.
+//
+// The FW should calculate the score of all the candidates (including currently connected one)
+//   with following equation:
+//     RSSI score = (RSSI + 85) * 4;
+//     If RSSI score > initial_score_max , RSSI score = initial_score_max;
+//     final score = RSSI score
+//         + current_connection_bonus (if currently connected BSSID)
+//         + same_network_bonus (if network has SAME_NETWORK flag)
+//         + secure_bonus (if the network is not open)
+//         + band5GHz_bonus (if BSSID is on 5G)
+//     If there is a BSSID’s score > current BSSID’s score, then report the cached scan results
+//         at the end of the scan (excluding the ones on blacklist) to the upper layer.
+// Additionally, all BSSIDs that are in the BSSID blacklist should be ignored by Enhanced PNO
+
+// Whether directed scan needs to be performed (for hidden SSIDs)
+#define WIFI_PNO_FLAG_DIRECTED_SCAN (1 << 0)
+// Whether PNO event shall be triggered if the network is found on A band
+#define WIFI_PNO_FLAG_A_BAND (1 << 1)
+// Whether PNO event shall be triggered if the network is found on G band
+#define WIFI_PNO_FLAG_G_BAND (1 << 2)
+// Whether strict matching is required
+// If required then the firmware must store the network's SSID and not just a hash
+#define WIFI_PNO_FLAG_STRICT_MATCH (1 << 3)
+// If this SSID should be considered the same network as the currently connected one for scoring
+#define WIFI_PNO_FLAG_SAME_NETWORK (1 << 4)
+
+// Code for matching the beacon AUTH IE - additional codes TBD
+#define WIFI_PNO_AUTH_CODE_OPEN  (1 << 0) // open
+#define WIFI_PNO_AUTH_CODE_PSK   (1 << 1) // WPA_PSK or WPA2PSK
+#define WIFI_PNO_AUTH_CODE_EAPOL (1 << 2) // any EAPOL
+
+typedef struct {
+    char ssid[32+1];     // null terminated
+    byte flags;          // WIFI_PNO_FLAG_XXX
+    byte auth_bit_field; // auth bit field for matching WPA IE
+} wifi_epno_network;
+
+/* ePNO Parameters */
+typedef struct {
+    int min5GHz_rssi;               // minimum 5GHz RSSI for a BSSID to be considered
+    int min24GHz_rssi;              // minimum 2.4GHz RSSI for a BSSID to be considered
+    int initial_score_max;          // the maximum score that a network can have before bonuses
+    int current_connection_bonus;   // only report when there is a network's score this much higher
+                                    // than the current connection.
+    int same_network_bonus;         // score bonus for all networks with the same network flag
+    int secure_bonus;               // score bonus for networks that are not open
+    int band5GHz_bonus;             // 5GHz RSSI score bonus (applied to all 5GHz networks)
+    int num_networks;               // number of wifi_epno_network objects
+    wifi_epno_network networks[MAX_EPNO_NETWORKS];   // PNO networks
+} wifi_epno_params;
+
+typedef struct {
+    // on results
+    void (*on_network_found)(wifi_request_id id,
+            unsigned num_results, wifi_scan_result *results);
+} wifi_epno_handler;
+
+
+/* Set the ePNO list - enable ePNO with the given parameters */
+wifi_error wifi_set_epno_list(wifi_request_id id, wifi_interface_handle iface,
+        const wifi_epno_params *epno_params, wifi_epno_handler handler);
+
+/* Reset the ePNO list - no ePNO networks should be matched after this */
+wifi_error wifi_reset_epno_list(wifi_request_id id, wifi_interface_handle iface);
+
+
+typedef struct {
+    int  id;                            // identifier of this network block, report this in event
+    char realm[256];                    // null terminated UTF8 encoded realm, 0 if unspecified
+    int64_t roamingConsortiumIds[16];   // roaming consortium ids to match, 0s if unspecified
+    byte plmn[3];                       // mcc/mnc combination as per rules, 0s if unspecified
+} wifi_passpoint_network;
+
+typedef struct {
+    void (*on_passpoint_network_found)(
+            wifi_request_id id,
+            int net_id,                        // network block identifier for the matched network
+            wifi_scan_result *result,          // scan result, with channel and beacon information
+            int anqp_len,                      // length of ANQP blob
+            byte *anqp                         // ANQP data, in the information_element format
+            );
+} wifi_passpoint_event_handler;
+
+/* Sets a list for passpoint networks for PNO purposes; it should be matched
+ * against any passpoint networks (designated by Interworking element) found
+ * during regular PNO scan. */
+wifi_error wifi_set_passpoint_list(wifi_request_id id, wifi_interface_handle iface, int num,
+        wifi_passpoint_network *networks, wifi_passpoint_event_handler handler);
+
+/* Reset passpoint network list - no Passpoint networks should be matched after this */
+wifi_error wifi_reset_passpoint_list(wifi_request_id id, wifi_interface_handle iface);
+
+#endif
diff --git a/wifi/legacy_headers/include/hardware_legacy/link_layer_stats.h b/wifi/legacy_headers/include/hardware_legacy/link_layer_stats.h
new file mode 100644
index 0000000..f4e16c6
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/link_layer_stats.h
@@ -0,0 +1,342 @@
+#include "wifi_hal.h"
+
+#ifndef __WIFI_HAL_STATS_H
+#define __WIFI_HAL_STATS_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#define STATS_MAJOR_VERSION      1
+#define STATS_MINOR_VERSION      0
+#define STATS_MICRO_VERSION      0
+
+typedef enum {
+    WIFI_DISCONNECTED = 0,
+    WIFI_AUTHENTICATING = 1,
+    WIFI_ASSOCIATING = 2,
+    WIFI_ASSOCIATED = 3,
+    WIFI_EAPOL_STARTED = 4,   // if done by firmware/driver
+    WIFI_EAPOL_COMPLETED = 5, // if done by firmware/driver
+} wifi_connection_state;
+
+typedef enum {
+    WIFI_ROAMING_IDLE = 0,
+    WIFI_ROAMING_ACTIVE = 1,
+} wifi_roam_state;
+
+typedef enum {
+    WIFI_INTERFACE_STA = 0,
+    WIFI_INTERFACE_SOFTAP = 1,
+    WIFI_INTERFACE_IBSS = 2,
+    WIFI_INTERFACE_P2P_CLIENT = 3,
+    WIFI_INTERFACE_P2P_GO = 4,
+    WIFI_INTERFACE_NAN = 5,
+    WIFI_INTERFACE_MESH = 6,
+    WIFI_INTERFACE_TDLS = 7,
+    WIFI_INTERFACE_UNKNOWN = -1
+ } wifi_interface_mode;
+
+#define WIFI_CAPABILITY_QOS          0x00000001     // set for QOS association
+#define WIFI_CAPABILITY_PROTECTED    0x00000002     // set for protected association (802.11 beacon frame control protected bit set)
+#define WIFI_CAPABILITY_INTERWORKING 0x00000004     // set if 802.11 Extended Capabilities element interworking bit is set
+#define WIFI_CAPABILITY_HS20         0x00000008     // set for HS20 association
+#define WIFI_CAPABILITY_SSID_UTF8    0x00000010     // set is 802.11 Extended Capabilities element UTF-8 SSID bit is set
+#define WIFI_CAPABILITY_COUNTRY      0x00000020     // set is 802.11 Country Element is present
+
+typedef struct {
+   wifi_interface_mode mode;          // interface mode
+   u8 mac_addr[6];                    // interface mac address (self)
+   wifi_connection_state state;       // connection state (valid for STA, CLI only)
+   wifi_roam_state roaming;           // roaming state
+   u32 capabilities;                  // WIFI_CAPABILITY_XXX (self)
+   u8 ssid[33];                       // null terminated SSID
+   u8 bssid[6];                       // bssid
+   u8 ap_country_str[3];              // country string advertised by AP
+   u8 country_str[3];                 // country string for this association
+   u8 time_slicing_duty_cycle_percent;// if this iface is being served using time slicing on a radio with one or more ifaces (i.e MCC), then the duty cycle assigned to this iface in %.
+                                      // If not using time slicing (i.e SCC or DBS), set to 100.
+} wifi_interface_link_layer_info;
+
+/* channel information */
+typedef struct {
+   wifi_channel_width width;   // channel width (20, 40, 80, 80+80, 160, 320)
+   wifi_channel center_freq;   // primary 20 MHz channel
+   wifi_channel center_freq0;  // center frequency (MHz) first segment
+   wifi_channel center_freq1;  // center frequency (MHz) second segment
+} wifi_channel_info;
+
+/* wifi rate */
+typedef struct {
+   u32 preamble   :3;   // 0: OFDM, 1:CCK, 2:HT 3:VHT 4:HE 5:EHT 6..7 reserved
+   u32 nss        :2;   // 0:1x1, 1:2x2, 3:3x3, 4:4x4
+   u32 bw         :3;   // 0:20MHz, 1:40Mhz, 2:80Mhz, 3:160Mhz 4:320Mhz
+   u32 rateMcsIdx :8;   // OFDM/CCK rate code would be as per ieee std in the units of 0.5mbps
+                        // HT/VHT/HE/EHT it would be mcs index
+   u32 reserved  :16;   // reserved
+   u32 bitrate;         // units of 100 Kbps
+} wifi_rate;
+
+/* channel statistics */
+typedef struct {
+   wifi_channel_info channel;  // channel
+   u32 on_time;                // msecs the radio is awake (32 bits number accruing over time)
+   u32 cca_busy_time;          // msecs the CCA register is busy (32 bits number accruing over time)
+} wifi_channel_stat;
+
+// Max number of tx power levels. The actual number vary per device and is specified by |num_tx_levels|
+#define RADIO_STAT_MAX_TX_LEVELS 256
+
+/* radio statistics */
+typedef struct {
+   wifi_radio radio;                      // wifi radio (if multiple radio supported)
+   u32 on_time;                           // msecs the radio is awake (32 bits number accruing over time)
+   u32 tx_time;                           // msecs the radio is transmitting (32 bits number accruing over time)
+   u32 num_tx_levels;                     // number of radio transmit power levels
+   u32 *tx_time_per_levels;               // pointer to an array of radio transmit per power levels in
+                                          // msecs accured over time
+   u32 rx_time;                           // msecs the radio is in active receive (32 bits number accruing over time)
+   u32 on_time_scan;                      // msecs the radio is awake due to all scan (32 bits number accruing over time)
+   u32 on_time_nbd;                       // msecs the radio is awake due to NAN (32 bits number accruing over time)
+   u32 on_time_gscan;                     // msecs the radio is awake due to G?scan (32 bits number accruing over time)
+   u32 on_time_roam_scan;                 // msecs the radio is awake due to roam?scan (32 bits number accruing over time)
+   u32 on_time_pno_scan;                  // msecs the radio is awake due to PNO scan (32 bits number accruing over time)
+   u32 on_time_hs20;                      // msecs the radio is awake due to HS2.0 scans and GAS exchange (32 bits number accruing over time)
+   u32 num_channels;                      // number of channels
+   wifi_channel_stat channels[];          // channel statistics
+} wifi_radio_stat;
+
+/**
+ * Packet statistics reporting by firmware is performed on MPDU basi (i.e. counters increase by 1 for each MPDU)
+ * As well, "data packet" in associated comments, shall be interpreted as 802.11 data packet,
+ * that is, 802.11 frame control subtype == 2 and excluding management and control frames.
+ *
+ * As an example, in the case of transmission of an MSDU fragmented in 16 MPDUs which are transmitted
+ * OTA in a 16 units long a-mpdu, for which a block ack is received with 5 bits set:
+ *          tx_mpdu : shall increase by 5
+ *          retries : shall increase by 16
+ *          tx_ampdu : shall increase by 1
+ * data packet counters shall not increase regardless of the number of BAR potentially sent by device for this a-mpdu
+ * data packet counters shall not increase regardless of the number of BA received by device for this a-mpdu
+ *
+ * For each subsequent retransmission of the 11 remaining non ACK'ed mpdus
+ * (regardless of the fact that they are transmitted in a-mpdu or not)
+ *          retries : shall increase by 1
+ *
+ * If no subsequent BA or ACK are received from AP, until packet lifetime expires for those 11 packet that were not ACK'ed
+ *          mpdu_lost : shall increase by 11
+ */
+
+/* per rate statistics */
+typedef struct {
+   wifi_rate rate;     // rate information
+   u32 tx_mpdu;        // number of successfully transmitted data pkts (ACK rcvd)
+   u32 rx_mpdu;        // number of received data pkts
+   u32 mpdu_lost;      // number of data packet losses (no ACK)
+   u32 retries;        // total number of data pkt retries
+   u32 retries_short;  // number of short data pkt retries
+   u32 retries_long;   // number of long data pkt retries
+} wifi_rate_stat;
+
+/* access categories */
+typedef enum {
+   WIFI_AC_VO  = 0,
+   WIFI_AC_VI  = 1,
+   WIFI_AC_BE  = 2,
+   WIFI_AC_BK  = 3,
+   WIFI_AC_MAX = 4,
+} wifi_traffic_ac;
+
+/* wifi peer type */
+typedef enum
+{
+   WIFI_PEER_STA,
+   WIFI_PEER_AP,
+   WIFI_PEER_P2P_GO,
+   WIFI_PEER_P2P_CLIENT,
+   WIFI_PEER_NAN,
+   WIFI_PEER_TDLS,
+   WIFI_PEER_INVALID,
+} wifi_peer_type;
+
+/* per peer statistics */
+typedef struct bssload_info {
+    u16 sta_count;    // station count
+    u16 chan_util;    // channel utilization
+    u8 PAD[4];
+} bssload_info_t;
+
+typedef struct {
+   wifi_peer_type type;           // peer type (AP, TDLS, GO etc.)
+   u8 peer_mac_address[6];        // mac address
+   u32 capabilities;              // peer WIFI_CAPABILITY_XXX
+   bssload_info_t bssload;        // STA count and CU
+   u32 num_rate;                  // number of rates
+   wifi_rate_stat rate_stats[];   // per rate statistics, number of entries  = num_rate
+} wifi_peer_info;
+
+/* Per access category statistics */
+typedef struct {
+   wifi_traffic_ac ac;             // access category (VI, VO, BE, BK)
+   u32 tx_mpdu;                    // number of successfully transmitted unicast data pkts (ACK rcvd)
+   u32 rx_mpdu;                    // number of received unicast data packets
+   u32 tx_mcast;                   // number of succesfully transmitted multicast data packets
+                                   // STA case: implies ACK received from AP for the unicast packet in which mcast pkt was sent
+   u32 rx_mcast;                   // number of received multicast data packets
+   u32 rx_ampdu;                   // number of received unicast a-mpdus; support of this counter is optional
+   u32 tx_ampdu;                   // number of transmitted unicast a-mpdus; support of this counter is optional
+   u32 mpdu_lost;                  // number of data pkt losses (no ACK)
+   u32 retries;                    // total number of data pkt retries
+   u32 retries_short;              // number of short data pkt retries
+   u32 retries_long;               // number of long data pkt retries
+   u32 contention_time_min;        // data pkt min contention time (usecs)
+   u32 contention_time_max;        // data pkt max contention time (usecs)
+   u32 contention_time_avg;        // data pkt avg contention time (usecs)
+   u32 contention_num_samples;     // num of data pkts used for contention statistics
+} wifi_wmm_ac_stat;
+
+/* interface statistics */
+typedef struct {
+   wifi_interface_handle iface;          // wifi interface
+   wifi_interface_link_layer_info info;  // current state of the interface
+   u32 beacon_rx;                        // access point beacon received count from connected AP
+   u64 average_tsf_offset;               // average beacon offset encountered (beacon_TSF - TBTT)
+                                         // The average_tsf_offset field is used so as to calculate the
+                                         // typical beacon contention time on the channel as well may be
+                                         // used to debug beacon synchronization and related power consumption issue
+   u32 leaky_ap_detected;                // indicate that this AP typically leaks packets beyond the driver guard time.
+   u32 leaky_ap_avg_num_frames_leaked;  // average number of frame leaked by AP after frame with PM bit set was ACK'ed by AP
+   u32 leaky_ap_guard_time;              // guard time currently in force (when implementing IEEE power management based on
+                                         // frame control PM bit), How long driver waits before shutting down the radio and
+                                         // after receiving an ACK for a data frame with PM bit set)
+   u32 mgmt_rx;                          // access point mgmt frames received count from connected AP (including Beacon)
+   u32 mgmt_action_rx;                   // action frames received count
+   u32 mgmt_action_tx;                   // action frames transmit count
+   wifi_rssi rssi_mgmt;                  // access Point Beacon and Management frames RSSI (averaged)
+   wifi_rssi rssi_data;                  // access Point Data Frames RSSI (averaged) from connected AP
+   wifi_rssi rssi_ack;                   // access Point ACK RSSI (averaged) from connected AP
+   wifi_wmm_ac_stat ac[WIFI_AC_MAX];     // per ac data packet statistics
+   u32 num_peers;                        // number of peers
+   wifi_peer_info peer_info[];           // per peer statistics
+} wifi_iface_stat;
+
+/* Various states for the link */
+typedef enum {
+  // Chip does not support reporting the state of the link.
+  WIFI_LINK_STATE_UNKNOWN = 0,
+  // Link has not been in use since last report. It is placed in power save. All
+  // management, control and data frames for the MLO connection are carried over
+  // other links. In this state the link will not listen to beacons even in DTIM
+  // period and does not perform any GTK/IGTK/BIGTK updates but remains
+  // associated.
+  WIFI_LINK_STATE_NOT_IN_USE = 1,
+  // Link is in use. In presence of traffic, it is set to be power active. When
+  // the traffic stops, the link will go into power save mode and will listen
+  // for beacons every DTIM period.
+  WIFI_LINK_STATE_IN_USE = 2,
+} wifi_link_state;
+
+/* Per link statistics */
+typedef struct {
+  u8 link_id;       // Identifier for the link.
+  wifi_link_state state; // State for the link.
+  wifi_radio radio; // Radio on which link stats are sampled.
+  u32 frequency;    // Frequency on which link is operating.
+  u32 beacon_rx;    // Beacon received count from connected AP on the link.
+  u64 average_tsf_offset;  // Average beacon offset encountered (beacon_TSF -
+                           // TBTT). The average_tsf_offset field is used so as
+                           // to calculate the typical beacon contention time on
+                           // the channel as well may be used to debug beacon
+                           // synchronization and related power consumption
+                           // issue.
+  u32 leaky_ap_detected;   // Indicate that this AP on the link typically leaks
+                           // packets beyond the driver guard time.
+  u32 leaky_ap_avg_num_frames_leaked;  // Average number of frame leaked by AP
+                                       // in the link after frame with PM bit
+                                       // set was ACK'ed by AP.
+  u32 leaky_ap_guard_time;  // Guard time currently in force (when implementing
+                            // IEEE power management based on frame control PM
+                            // bit), How long driver waits before shutting down
+                            // the radio and after receiving an ACK for a data
+                            // frame with PM bit set).
+  u32 mgmt_rx;  // Management frames received count from connected AP on the
+                // link (including Beacon).
+  u32 mgmt_action_rx;  // Action frames received count on the link.
+  u32 mgmt_action_tx;  // Action frames transmit count on the link.
+  wifi_rssi rssi_mgmt; // Access Point Beacon and Management frames RSSI
+                       // (averaged) on the link.
+  wifi_rssi rssi_data; // Access Point Data Frames RSSI (averaged) from
+                       // connected AP on the link.
+  wifi_rssi rssi_ack;  // Access Point ACK RSSI (averaged) from connected AP on
+                       // the links.
+  wifi_wmm_ac_stat ac[WIFI_AC_MAX];    // Per AC data packet statistics for the
+                                       // link.
+  u8 time_slicing_duty_cycle_percent;  // If this link is being served using
+                                       // time slicing on a radio with one or
+                                       // more links, then the duty cycle
+                                       // assigned to this link in %.
+  u32 num_peers;                       // Number of peers.
+  wifi_peer_info peer_info[];          // Peer statistics for the link.
+} wifi_link_stat;
+
+/* Multi link stats for interface  */
+typedef struct {
+  wifi_interface_handle iface;          // Wifi interface.
+  wifi_interface_link_layer_info info;  // Current state of the interface.
+  int num_links;                        // Number of links.
+  wifi_link_stat links[];               // Stats per link.
+} wifi_iface_ml_stat;
+/* configuration params */
+typedef struct {
+   u32 mpdu_size_threshold;             // threshold to classify the pkts as short or long
+                                        // packet size < mpdu_size_threshold => short
+   u32 aggressive_statistics_gathering; // set for field debug mode. Driver should collect all statistics regardless of performance impact.
+} wifi_link_layer_params;
+
+/* API to trigger the link layer statistics collection.
+   Unless his API is invoked - link layer statistics will not be collected.
+   Radio statistics (once started) do not stop or get reset unless wifi_clear_link_stats is invoked
+   Interface statistics (once started) reset and start afresh after each connection */
+wifi_error wifi_set_link_stats(wifi_interface_handle iface, wifi_link_layer_params params);
+
+/* Callbacks for reporting link layer stats. Only one of the callbacks needs to
+ * be called. */
+typedef struct {
+   /* Legacy: Single iface/link stats. */
+   void (*on_link_stats_results)(wifi_request_id id,
+                                 wifi_iface_stat *iface_stat, int num_radios,
+                                 wifi_radio_stat *radio_stat);
+   /* Multi link stats. */
+   void (*on_multi_link_stats_results)(wifi_request_id id,
+                                       wifi_iface_ml_stat *iface_ml_stat,
+                                       int num_radios,
+                                       wifi_radio_stat *radio_stat);
+} wifi_stats_result_handler;
+
+/* api to collect the link layer statistics for a given iface and all the radio stats */
+wifi_error wifi_get_link_stats(wifi_request_id id,
+        wifi_interface_handle iface, wifi_stats_result_handler handler);
+
+/* wifi statistics bitmap  */
+#define WIFI_STATS_RADIO              0x00000001      // all radio statistics
+#define WIFI_STATS_RADIO_CCA          0x00000002      // cca_busy_time (within radio statistics)
+#define WIFI_STATS_RADIO_CHANNELS     0x00000004      // all channel statistics (within radio statistics)
+#define WIFI_STATS_RADIO_SCAN         0x00000008      // all scan statistics (within radio statistics)
+#define WIFI_STATS_IFACE              0x00000010      // all interface statistics
+#define WIFI_STATS_IFACE_TXRATE       0x00000020      // all tx rate statistics (within interface statistics)
+#define WIFI_STATS_IFACE_AC           0x00000040      // all ac statistics (within interface statistics)
+#define WIFI_STATS_IFACE_CONTENTION   0x00000080      // all contention (min, max, avg) statistics (within ac statisctics)
+
+/* clear api to reset statistics, stats_clear_rsp_mask identifies what stats have been cleared
+   stop_req = 1 will imply whether to stop the statistics collection.
+   stop_rsp = 1 will imply that stop_req was honored and statistics collection was stopped.
+ */
+wifi_error wifi_clear_link_stats(wifi_interface_handle iface,
+      u32 stats_clear_req_mask, u32 *stats_clear_rsp_mask, u8 stop_req, u8 *stop_rsp);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /*__WIFI_HAL_STATS_ */
diff --git a/wifi/legacy_headers/include/hardware_legacy/roam.h b/wifi/legacy_headers/include/hardware_legacy/roam.h
new file mode 100644
index 0000000..dbfd54b
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/roam.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __WIFI_HAL_ROAM_H__
+#define __WIFI_HAL_ROAM_H__
+
+#include "wifi_hal.h"
+
+#define MAX_BLACKLIST_BSSID         16
+#define MAX_WHITELIST_SSID          8
+#define MAX_SSID_LENGTH             32
+
+typedef struct {
+    u32 max_blacklist_size;
+    u32 max_whitelist_size;
+} wifi_roaming_capabilities;
+
+typedef enum {
+    ROAMING_DISABLE,
+    ROAMING_ENABLE,
+    ROAMING_AGGRESSIVE
+} fw_roaming_state_t;
+
+typedef struct {
+    u32 length;
+    char ssid_str[MAX_SSID_LENGTH];
+} ssid_t;
+
+typedef struct {
+    u32 num_blacklist_bssid;                       // Number of bssids valid in blacklist_bssid[].
+    mac_addr blacklist_bssid[MAX_BLACKLIST_BSSID]; // List of bssids which should not be considered
+                                                   // for romaing by firmware/driver.
+    u32 num_whitelist_ssid;                        // Number of ssids valid in whitelist_ssid[].
+    ssid_t whitelist_ssid[MAX_WHITELIST_SSID];     // List of ssids to which firmware/driver can
+                                                   // consider to roam to.
+} wifi_roaming_config;
+
+/* Get the chipset roaming capabilities. */
+wifi_error wifi_get_roaming_capabilities(wifi_interface_handle handle,
+                                         wifi_roaming_capabilities *caps);
+/* Enable/disable firmware roaming */
+wifi_error wifi_enable_firmware_roaming(wifi_interface_handle handle,
+                                        fw_roaming_state_t state);
+
+/* Pass down the blacklist BSSID and whitelist SSID to firmware. */
+wifi_error wifi_configure_roaming(wifi_interface_handle handle,
+                                  wifi_roaming_config *roaming_config);
+
+#endif /* __WIFI_HAL_ROAM_H__ */
diff --git a/wifi/legacy_headers/include/hardware_legacy/rtt.h b/wifi/legacy_headers/include/hardware_legacy/rtt.h
new file mode 100644
index 0000000..63c3325
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/rtt.h
@@ -0,0 +1,411 @@
+
+#include "wifi_hal.h"
+#include "gscan.h"
+
+#ifndef __WIFI_HAL_RTT_H__
+#define __WIFI_HAL_RTT_H__
+
+/* Ranging status */
+typedef enum {
+    RTT_STATUS_SUCCESS       = 0,
+    RTT_STATUS_FAILURE       = 1,           // general failure status
+    RTT_STATUS_FAIL_NO_RSP   = 2,           // target STA does not respond to request
+    RTT_STATUS_FAIL_REJECTED = 3,           // request rejected. Applies to 2-sided RTT only
+    RTT_STATUS_FAIL_NOT_SCHEDULED_YET  = 4,
+    RTT_STATUS_FAIL_TM_TIMEOUT         = 5, // timing measurement times out
+    RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL = 6, // Target on different channel, cannot range
+    RTT_STATUS_FAIL_NO_CAPABILITY  = 7,     // ranging not supported
+    RTT_STATUS_ABORTED             = 8,     // request aborted for unknown reason
+    RTT_STATUS_FAIL_INVALID_TS     = 9,     // Invalid T1-T4 timestamp
+    RTT_STATUS_FAIL_PROTOCOL       = 10,    // 11mc protocol failed
+    RTT_STATUS_FAIL_SCHEDULE       = 11,    // request could not be scheduled
+    RTT_STATUS_FAIL_BUSY_TRY_LATER = 12,    // responder cannot collaborate at time of request
+    RTT_STATUS_INVALID_REQ         = 13,    // bad request args
+    RTT_STATUS_NO_WIFI             = 14,    // WiFi not enabled
+    RTT_STATUS_FAIL_FTM_PARAM_OVERRIDE = 15, // Responder overrides param info, cannot range with new params
+    RTT_STATUS_NAN_RANGING_PROTOCOL_FAILURE =16, //Negotiation failure
+    RTT_STATUS_NAN_RANGING_CONCURRENCY_NOT_SUPPORTED=17, //concurrency not supported (NDP+RTT)
+} wifi_rtt_status;
+
+/* RTT peer type */
+typedef enum {
+    RTT_PEER_AP         = 0x1,
+    RTT_PEER_STA        = 0x2,
+    RTT_PEER_P2P_GO     = 0x3,
+    RTT_PEER_P2P_CLIENT = 0x4,
+    RTT_PEER_NAN        = 0x5
+} rtt_peer_type;
+
+/* RTT Measurement Bandwidth */
+typedef enum {
+    WIFI_RTT_BW_UNSPECIFIED = 0x00,
+    WIFI_RTT_BW_5           = 0x01,
+    WIFI_RTT_BW_10          = 0x02,
+    WIFI_RTT_BW_20          = 0x04,
+    WIFI_RTT_BW_40          = 0x08,
+    WIFI_RTT_BW_80          = 0x10,
+    WIFI_RTT_BW_160         = 0x20,
+    WIFI_RTT_BW_320         = 0x40
+} wifi_rtt_bw;
+
+/* RTT Measurement Preamble */
+typedef enum {
+    WIFI_RTT_PREAMBLE_INVALID = 0x0,
+    WIFI_RTT_PREAMBLE_LEGACY  = 0x1,
+    WIFI_RTT_PREAMBLE_HT      = 0x2,
+    WIFI_RTT_PREAMBLE_VHT     = 0x4,
+    WIFI_RTT_PREAMBLE_HE      = 0x8,
+    WIFI_RTT_PREAMBLE_EHT     = 0x10,
+} wifi_rtt_preamble ;
+
+/* RTT Type */
+typedef enum {
+    RTT_TYPE_1_SIDED          = 0x1,
+    /* Deprecated. Use RTT_TYPE_2_SIDED_11MC instead. */
+    RTT_TYPE_2_SIDED          = 0x2,
+    RTT_TYPE_2_SIDED_11MC     = RTT_TYPE_2_SIDED,
+    RTT_TYPE_2_SIDED_11AZ_NTB = 0x3,
+
+} wifi_rtt_type;
+
+/* RTT configuration */
+typedef struct {
+    mac_addr addr;                 // peer device mac address
+    wifi_rtt_type type;            // 1-sided or 2-sided RTT (11mc and 11az)
+    rtt_peer_type peer;            // optional - peer device hint (STA, P2P, AP)
+    wifi_channel_info channel;     // Required for STA-AP mode, optional for P2P, NBD etc.
+    unsigned burst_period;         // Time interval between bursts (units: 100 ms).
+                                   // Applies to 1-sided and 2-sided RTT multi-burst requests.
+                                   // Range: 0-31, 0: no preference by initiator (2-sided RTT)
+                                   // Note: Applicable for 11mc only.
+    unsigned num_burst;            // Total number of RTT bursts to be executed. It will be
+                                   // specified in the same way as the parameter "Number of
+                                   // Burst Exponent" found in the FTM frame format. It
+                                   // applies to both: 1-sided RTT and 2-sided RTT. Valid
+                                   // values are 0 to 15 as defined in 802.11mc std.
+                                   // 0 means single shot
+                                   // The implication of this parameter on the maximum
+                                   // number of RTT results is the following:
+                                   // for 1-sided RTT: max num of RTT results = (2^num_burst)*(num_frames_per_burst)
+                                   // for 2-sided RTT: max num of RTT results = (2^num_burst)*(num_frames_per_burst - 1)
+                                   // Note: Applicable for 11mc only.
+    unsigned num_frames_per_burst; // num of frames per burst.
+                                   // Minimum value = 1, Maximum value = 31
+                                   // For 2-sided this equals the number of FTM frames
+                                   // to be attempted in a single burst. This also
+                                   // equals the number of FTM frames that the
+                                   // initiator will request that the responder send
+                                   // in a single frame.
+                                   // Note: Applicable for 11mc only.
+    unsigned num_retries_per_rtt_frame; // number of retries for a failed RTT frame. Applies
+                                        // to 1-sided RTT only. Minimum value = 0, Maximum value = 3
+
+    //following fields are only valid for 2-side RTT
+    unsigned num_retries_per_ftmr; // Maximum number of retries that the initiator can
+                                   // retry an FTMR frame.
+                                   // Minimum value = 0, Maximum value = 3
+    byte LCI_request;              // 1: request LCI, 0: do not request LCI
+    byte LCR_request;              // 1: request LCR, 0: do not request LCR
+    unsigned burst_duration;       // Applies to 1-sided and 2-sided 11mc RTT. Valid values will
+                                   // be 2-11 and 15 as specified by the 802.11mc std for
+                                   // the FTM parameter burst duration. In a multi-burst
+                                   // request, if responder overrides with larger value,
+                                   // the initiator will return failure. In a single-burst
+                                   // request if responder overrides with larger value,
+                                   // the initiator will sent TMR_STOP to terminate RTT
+                                   // at the end of the burst_duration it requested.
+    wifi_rtt_preamble preamble;    // RTT preamble to be used in the RTT frames
+    wifi_rtt_bw bw;                // RTT BW to be used in the RTT frames
+} wifi_rtt_config;
+
+/* RTT configuration v3 (11az support)*/
+typedef struct {
+    wifi_rtt_config rtt_config;
+    byte ntb_min_measurement_time_millis; // 11az Non-Trigger-based (non-TB) minimum measurement
+                                          // time in milliseconds
+    byte ntb_max_measurement_time_millis; // 11az Non-Trigger-based (non-TB) maximum measurement
+                                          // time in milliseconds
+    byte tx_ltf_repetition_count;         // Multiple transmissions of HE-LTF symbols in an HE
+                                          // Ranging NDP. A value of 1 indicates no repetition.
+} wifi_rtt_config_v3;
+
+/* RTT results */
+typedef struct {
+    mac_addr addr;                // device mac address
+    unsigned burst_num;           // burst number in a multi-burst request. Note: Applicable to
+                                  // 1-sided RTT and 2-sided IEEE 802.11mc only.
+    unsigned measurement_number;  // Total RTT measurement frames attempted
+    unsigned success_number;      // Total successful RTT measurement frames
+    byte  number_per_burst_peer;  // Maximum number of "FTM frames per burst" supported by
+                                  // the responder STA. Applies to 2-sided RTT only.
+                                  // If reponder overrides with larger value:
+                                  // - for single-burst request initiator will truncate the
+                                  // larger value and send a TMR_STOP after receiving as
+                                  // many frames as originally requested.
+                                  // - for multi-burst request, initiator will return
+                                  // failure right away.
+    wifi_rtt_status status;       // ranging status
+    byte retry_after_duration;    // When status == RTT_STATUS_FAIL_BUSY_TRY_LATER,
+                                  // this will be the time provided by the responder as to
+                                  // when the request can be tried again. Applies to 2-sided
+                                  // RTT only. In sec, 1-31sec.
+    wifi_rtt_type type;           // RTT type
+    wifi_rssi rssi;               // average rssi in 0.5 dB steps e.g. 143 implies -71.5 dB
+    wifi_rssi rssi_spread;        // rssi spread in 0.5 dB steps e.g. 5 implies 2.5 dB spread (optional)
+    wifi_rate tx_rate;            // 1-sided RTT: TX rate of RTT frame.
+                                  // 2-sided RTT: TX rate of initiator's Ack in response to FTM frame.
+    wifi_rate rx_rate;            // 1-sided RTT: TX rate of Ack from other side.
+                                  // 2-sided RTT: TX rate of FTM frame coming from responder.
+    wifi_timespan rtt;            // round trip time in picoseconds
+    wifi_timespan rtt_sd;         // rtt standard deviation in picoseconds
+    wifi_timespan rtt_spread;     // difference between max and min rtt times recorded in picoseconds
+                                  // Note: Only applicable for IEEE 802.11mc
+    int distance_mm;              // distance in mm (optional)
+    int distance_sd_mm;           // standard deviation in mm (optional)
+    int distance_spread_mm;       // difference between max and min distance recorded in mm (optional)
+    wifi_timestamp ts;            // time of the measurement (in microseconds since boot)
+    int burst_duration;           // in ms, actual time taken by the FW to finish one burst
+                                  // measurement. Applies to 1-sided and 2-sided RTT.
+    int negotiated_burst_num;     // Number of bursts allowed by the responder. Applies
+                                  // to 2-sided 11mc RTT only.
+    wifi_information_element *LCI; // for 11mc and 11az only
+    wifi_information_element *LCR; // for 11mc and 11az only
+} wifi_rtt_result;
+
+/* RTT results version 2 */
+typedef struct {
+    wifi_rtt_result rtt_result;   // Legacy wifi rtt result structure
+    wifi_channel frequency;       // primary channel frequency (MHz) used for ranging measurements
+                                  // If frequency is unknown, this will be set to |UNSPECIFIED(-1)|
+    wifi_rtt_bw packet_bw;        // RTT packet bandwidth is an average BW of the BWs of RTT frames.
+                                  // Cap the average close to a specific valid RttBw.
+} wifi_rtt_result_v2;
+
+/* RTT results v3 (11az support)*/
+typedef struct {
+  wifi_rtt_result_v2 rtt_result;
+  int tx_ltf_repetition_count;         // 11az Transmit LTF repetitions used to get this result.
+  int ntb_min_measurement_time_millis; // Minimum non-trigger based (non-TB) dynamic measurement
+                                       // time in milliseconds assigned by the 11az responder.
+  int ntb_max_measurement_time_millis; // Maximum non-trigger based (non-TB) dynamic measurement
+                                       // time in milliseconds assigned by the 11az responder.
+} wifi_rtt_result_v3;
+
+
+/* RTT result callbacks */
+typedef struct {
+    /*
+     * This callback is deprecated on Android 14 and onwards. Newer implementations should support
+     * on_rtt_results_v2 callback.
+     */
+    void (*on_rtt_results) (wifi_request_id id,
+                            unsigned num_results,
+                            wifi_rtt_result *rtt_result[]);
+
+    /*
+     * Called when vendor implementation supports sending RTT results version 2.
+     *
+     * Note: This callback is deprecated on Android 15 onwards. Newer implementation should support
+     * on_rtt_results_v3.
+     */
+    void (*on_rtt_results_v2) (wifi_request_id id,
+                               unsigned num_results,
+                               wifi_rtt_result_v2 *rtt_result_v2[]);
+} wifi_rtt_event_handler;
+
+/* API to request RTT measurement */
+wifi_error wifi_rtt_range_request(wifi_request_id id, wifi_interface_handle iface,
+        unsigned num_rtt_config, wifi_rtt_config rtt_config[], wifi_rtt_event_handler handler);
+
+/* RTT result v3 callback (11az support) */
+typedef struct {
+    /*
+     * Called when vendor implementation supports sending RTT results version 3 (Added support for
+     * 11az ranging)
+     */
+    void (*on_rtt_results_v3) (wifi_request_id id,
+                               unsigned num_results,
+                               wifi_rtt_result_v3 *rtt_result_v3[]);
+} wifi_rtt_event_handler_v3;
+
+
+/* v3 API to request RTT measurement(11az support).  */
+wifi_error wifi_rtt_range_request_v3(wifi_request_id id,
+                                     wifi_interface_handle iface,
+                                     unsigned num_rtt_config,
+                                     wifi_rtt_config_v3 rtt_config_v3[],
+                                     wifi_rtt_event_handler_v3 handler);
+
+/* API to cancel RTT measurements */
+wifi_error wifi_rtt_range_cancel(wifi_request_id id,  wifi_interface_handle iface,
+        unsigned num_devices, mac_addr addr[]);
+
+/* NBD ranging channel map */
+typedef struct {
+    wifi_channel availablity[32]; // specifies the channel map for each of the 16 TU windows
+    // frequency of 0 => unspecified; which means firmware is
+    // free to do whatever it wants in this window.
+} wifi_channel_map;
+
+/* API to start publishing the channel map on responder device in a NBD cluster.
+   Responder device will take this request and schedule broadcasting the channel map
+   in a NBD ranging attribute in a SDF. DE will automatically remove the ranging
+   attribute from the OTA queue after number of DW specified by num_dw
+   where Each DW is 512 TUs apart */
+wifi_error wifi_rtt_channel_map_set(wifi_request_id id,
+        wifi_interface_handle iface, wifi_channel_map *params, unsigned num_dw);
+
+/* API to clear the channel map on the responder device in a NBD cluster.
+   Responder device will cancel future ranging channel request, starting from next
+   DW interval and will also stop broadcasting NBD ranging attribute in SDF */
+wifi_error wifi_rtt_channel_map_clear(wifi_request_id id,  wifi_interface_handle iface);
+
+// Preamble definition for bit mask used in wifi_rtt_capabilities
+#define PREAMBLE_LEGACY 0x1
+#define PREAMBLE_HT     0x2
+#define PREAMBLE_VHT    0x4
+#define PREAMBLE_HE     0x8
+#define PREAMBLE_EHT    0x10
+
+// BW definition for bit mask used in wifi_rtt_capabilities
+#define BW_5_SUPPORT   0x1
+#define BW_10_SUPPORT  0x2
+#define BW_20_SUPPORT  0x4
+#define BW_40_SUPPORT  0x8
+#define BW_80_SUPPORT  0x10
+#define BW_160_SUPPORT 0x20
+#define BW_320_SUPPORT 0x40
+
+/* RTT Capabilities */
+typedef struct {
+    byte rtt_one_sided_supported;  // if 1-sided rtt data collection is supported
+    byte rtt_ftm_supported;        // if ftm rtt data collection is supported
+    byte lci_support;              // if initiator supports LCI request. Applies to 2-sided RTT
+                                   // (applies to both 11mc and 11az).
+    byte lcr_support;              // if initiator supports LCR request. Applies to 2-sided RTT
+                                   // (applies to both 11mc and 11az).
+    byte preamble_support;         // bit mask indicates what preamble is supported by 11mc
+                                   // initiator
+    byte bw_support;               // bit mask indicates what BW is supported by 11mc initiator
+    byte responder_supported;      // if 11mc responder mode is supported
+    byte mc_version;               // draft 11mc spec version supported by chip. For instance,
+                                   // version 4.0 should be 40 and version 4.3 should be 43 etc.
+} wifi_rtt_capabilities;
+
+
+/*  RTT capabilities of the device */
+wifi_error wifi_get_rtt_capabilities(wifi_interface_handle iface,
+                                     wifi_rtt_capabilities *capabilities);
+
+/* RTT Capabilities v3 (11az support) */
+typedef struct {
+    wifi_rtt_capabilities rtt_capab;
+    byte az_preamble_support;       // bit mask indicates what preamble is supported by the 11az
+                                    // initiator
+    byte az_bw_support;             // bit mask indicates what BW is supported by 11az initiator
+    byte ntb_initiator_supported;   // if 11az non-TB initiator is supported
+    byte ntb_responder_supported;   // if 11az non-TB responder is supported
+    byte max_tx_ltf_repetition_count;// maximum HE LTF repetitions the 11az initiator is capable of
+                                    // transmitting in the preamble of I2R NDP
+} wifi_rtt_capabilities_v3;
+
+/*  RTT capabilities v3 of the device (11az support) */
+wifi_error wifi_get_rtt_capabilities_v3(wifi_interface_handle iface,
+                                        wifi_rtt_capabilities_v3 *capabilities);
+
+/* debugging definitions */
+enum {
+    RTT_DEBUG_DISABLE,
+    RTT_DEBUG_LOG,
+    RTT_DEBUG_PROTO,
+    RTT_DEBUG_BURST,
+    RTT_DEBUG_ACCURACY,
+    RTT_DEBUG_LOGDETAIL
+};  //rtt debug type
+
+enum {
+    RTT_DEBUG_FORMAT_TXT,
+    RTT_DEBUG_FORMAT_BINARY
+}; //rtt debug format
+
+typedef struct rtt_debug {
+    unsigned version;
+    unsigned len; // total length of after len field
+    unsigned type;  // rtt debug type
+    unsigned format; //rtt debug format
+    char dbuf[0]; // debug content
+} rtt_debug_t;
+
+/* set configuration for debug */
+wifi_error wifi_rtt_debug_cfg(wifi_interface_handle h, unsigned rtt_dbg_type, char *cfgbuf, unsigned cfg_buf_size);
+/* get the debug information */
+wifi_error wifi_rtt_debug_get(wifi_interface_handle h, rtt_debug_t **debugbuf);
+/* free the debug buffer */
+wifi_error wifi_rtt_debug_free(wifi_interface_handle h, rtt_debug_t *debugbuf);
+
+/* API for setting LCI/LCR information to be provided to a requestor */
+typedef enum {
+    WIFI_MOTION_NOT_EXPECTED = 0, // Not expected to change location
+    WIFI_MOTION_EXPECTED = 1,     // Expected to change location
+    WIFI_MOTION_UNKNOWN  = 2,     // Movement pattern unknown
+} wifi_motion_pattern;
+
+typedef struct {
+    long latitude;              // latitude in degrees * 2^25 , 2's complement
+    long longitude;             // latitude in degrees * 2^25 , 2's complement
+    int  altitude;              // Altitude in units of 1/256 m
+    byte latitude_unc;          // As defined in Section 2.3.2 of IETF RFC 6225
+    byte longitude_unc;         // As defined in Section 2.3.2 of IETF RFC 6225
+    byte altitude_unc;          // As defined in Section 2.4.5 from IETF RFC 6225:
+
+    //Following element for configuring the Z subelement
+    wifi_motion_pattern motion_pattern;
+    int  floor;                 // floor in units of 1/16th of floor. 0x80000000 if unknown.
+    int  height_above_floor;    // in units of 1/64 m
+    int  height_unc;            // in units of 1/64 m. 0 if unknown
+} wifi_lci_information;
+
+typedef struct {
+    char country_code[2];       // country code
+    int  length;                // length of the info field
+    char civic_info[256];       // Civic info to be copied in FTM frame
+} wifi_lcr_information;
+
+// API to configure the LCI. Used in RTT Responder mode only
+wifi_error wifi_set_lci(wifi_request_id id, wifi_interface_handle iface,
+                        wifi_lci_information *lci);
+
+// API to configure the LCR. Used in RTT Responder mode only.
+wifi_error wifi_set_lcr(wifi_request_id id, wifi_interface_handle iface,
+                        wifi_lcr_information *lcr);
+
+/**
+ * RTT Responder information
+ */
+typedef struct {
+    wifi_channel_info channel;
+    wifi_rtt_preamble preamble;
+} wifi_rtt_responder;
+
+/**
+ * Get RTT responder information e.g. WiFi channel to enable responder on.
+ */
+wifi_error wifi_rtt_get_responder_info(wifi_interface_handle iface,
+                                       wifi_rtt_responder *responder_info);
+
+/**
+ * Enable RTT responder mode.
+ * channel_hint - hint of the channel information where RTT responder should be enabled on.
+ * max_duration_seconds - timeout of responder mode.
+ * channel_used - channel used for RTT responder, NULL if responder is not enabled.
+ */
+wifi_error wifi_enable_responder(wifi_request_id id, wifi_interface_handle iface,
+                                 wifi_channel_info channel_hint, unsigned max_duration_seconds,
+                                 wifi_rtt_responder *responder_info);
+
+/**
+ * Disable RTT responder mode.
+ */
+wifi_error wifi_disable_responder(wifi_request_id id, wifi_interface_handle iface);
+
+#endif
diff --git a/wifi/legacy_headers/include/hardware_legacy/tdls.h b/wifi/legacy_headers/include/hardware_legacy/tdls.h
new file mode 100644
index 0000000..9ac225a
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/tdls.h
@@ -0,0 +1,85 @@
+
+#include "wifi_hal.h"
+
+#ifndef _TDLS_H_
+#define _TDLS_H_
+
+typedef enum {
+    WIFI_TDLS_DISABLED = 1,                 /* TDLS is not enabled, default status for all STAs */
+    WIFI_TDLS_ENABLED,                      /* TDLS is enabled, but not yet tried */
+    WIFI_TDLS_ESTABLISHED,                  /* Direct link is established */
+    WIFI_TDLS_ESTABLISHED_OFF_CHANNEL,      /* Direct link is established using MCC */
+    WIFI_TDLS_DROPPED,                      /* Direct link was established,
+                                             * but is temporarily dropped now */
+    WIFI_TDLS_FAILED                        /* TDLS permanent failed. Inform error to upper layer
+                                             * and go back to WIFI_TDLS_DISABLED */
+} wifi_tdls_state;
+
+typedef enum {
+    WIFI_TDLS_SUCCESS,                              /* Success */
+    WIFI_TDLS_UNSPECIFIED           = -1,           /* Unspecified reason */
+    WIFI_TDLS_NOT_SUPPORTED         = -2,           /* Remote side doesn't support TDLS */
+    WIFI_TDLS_UNSUPPORTED_BAND      = -3,           /* Remote side doesn't support this band */
+    WIFI_TDLS_NOT_BENEFICIAL        = -4,           /* Going to AP is better than going direct */
+    WIFI_TDLS_DROPPED_BY_REMOTE     = -5            /* Remote side doesn't want it anymore */
+} wifi_tdls_reason;
+
+typedef struct {
+    int channel;                        /* channel hint, in channel number (NOT frequency ) */
+    int global_operating_class;         /* operating class to use */
+    int max_latency_ms;                 /* max latency that can be tolerated by apps */
+    int min_bandwidth_kbps;             /* bandwidth required by apps, in kilo bits per second */
+} wifi_tdls_params;
+
+typedef struct {
+    int channel;
+    int global_operating_class;
+    wifi_tdls_state state;
+    wifi_tdls_reason reason;
+} wifi_tdls_status;
+
+typedef struct {
+    int max_concurrent_tdls_session_num;      /* Maximum TDLS session number can be supported by the
+                                              * Firmware and hardware*/
+    int is_global_tdls_supported;            /* 1 -- support,  0 -- not support */
+    int is_per_mac_tdls_supported;           /* 1 -- support,  0 -- not support */
+    int is_off_channel_tdls_supported;       /* 1 -- support,  0 -- not support */
+} wifi_tdls_capabilities;
+
+typedef struct {
+    /* on_tdls_state_changed - reports state of TDLS link to framework
+     * Report this event when the state of TDLS link changes */
+    void (*on_tdls_state_changed)(mac_addr addr, wifi_tdls_status status);
+} wifi_tdls_handler;
+
+
+/* wifi_enable_tdls - enables TDLS-auto mode for a specific route
+ *
+ * params specifies hints, which provide more information about
+ * why TDLS is being sought. The firmware should do its best to
+ * honor the hints before downgrading regular AP link
+ * If upper layer has no specific values, this should be NULL
+ *
+ * handler is used to inform the upper layer about the status change and the corresponding reason
+ */
+wifi_error wifi_enable_tdls(wifi_interface_handle iface, mac_addr addr,
+        wifi_tdls_params *params, wifi_tdls_handler handler);
+
+/* wifi_disable_tdls - disables TDLS-auto mode for a specific route
+ *
+ * This terminates any existing TDLS with addr device, and frees the
+ * device resources to make TDLS connections on new routes.
+ *
+ * DON'T fire any more events on 'handler' specified in earlier call to
+ * wifi_enable_tdls after this action.
+ */
+wifi_error wifi_disable_tdls(wifi_interface_handle iface, mac_addr addr);
+
+/* wifi_get_tdls_status - allows getting the status of TDLS for a specific route */
+wifi_error wifi_get_tdls_status(wifi_interface_handle iface, mac_addr addr,
+        wifi_tdls_status *status);
+
+/* return the current HW + Firmware combination's TDLS capabilities */
+wifi_error wifi_get_tdls_capabilities(wifi_interface_handle iface,
+        wifi_tdls_capabilities *capabilities);
+#endif
diff --git a/wifi/legacy_headers/include/hardware_legacy/wifi_cached_scan_results.h b/wifi/legacy_headers/include/hardware_legacy/wifi_cached_scan_results.h
new file mode 100644
index 0000000..a2a23fe
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/wifi_cached_scan_results.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __WIFI_CACHED_SCAN_RESULTS_H__
+#define __WIFI_CACHED_SCAN_RESULTS_H__
+
+#include "wifi_hal.h"
+
+#define WIFI_CACHED_SCAN_RESULT_FLAGS_NONE                         (0)
+/* Element ID 61 (HT Operation) is present (see HT 7.3.2) */
+#define WIFI_CACHED_SCAN_RESULT_FLAGS_HT_OPS_PRESENT               (1 << 0)
+/* Element ID 192 (VHT Operation) is present (see VHT 8.4.2)  */
+#define WIFI_CACHED_SCAN_RESULT_FLAGS_VHT_OPS_PRESENT              (1 << 1)
+/* Element ID 255 + Extension 36 (HE Operation) is present
+ * (see 802.11ax 9.4.2.1)
+ */
+#define WIFI_CACHED_SCAN_RESULT_FLAGS_HE_OPS_PRESENT               (1 << 2)
+/* Element ID 255 + Extension 106 (HE Operation) is present
+ * (see 802.11be D1.5 9.4.2.1)
+ */
+#define WIFI_CACHED_SCAN_RESULT_FLAGS_EHT_OPS_PRESENT              (1 << 3)
+/* Element ID 127 (Extended Capabilities) is present, and bit 70
+ * (Fine Timing Measurement Responder) is set to 1
+ * (see IEEE Std 802.11-2016 9.4.2.27)
+ */
+#define WIFI_CACHED_SCAN_RESULT_FLAGS_IS_FTM_RESPONDER             (1 << 4)
+
+/**
+ * Provides information about a single access point (AP) detected in a scan.
+ */
+typedef struct {
+    /* Number of milliseconds prior to ts in the enclosing
+     * wifi_cached_scan_result_report struct when
+     * the probe response or beacon frame that
+     * was used to populate this structure was received.
+     */
+    u32 age_ms;
+    /* The Capability Information field */
+    u16 capability;
+    /* null terminated */
+    u8 ssid[33];
+    u8 ssid_len;
+    u8 bssid[6];
+    /* A set of flags from WIFI_CACHED_SCAN_RESULT_FLAGS_* */
+    u8 flags;
+    s8  rssi;
+    wifi_channel_spec chanspec;
+}wifi_cached_scan_result;
+
+/*
+ * Data structure sent with events of type WifiCachedScanResult.
+ */
+typedef struct  {
+    /* time since boot (in microsecond) when the result was retrieved */
+    wifi_timestamp ts;
+    /* If 0, indicates that all frequencies in current regulation were
+     * scanned. Otherwise, indicates the number of frequencies scanned, as
+     * specified in scanned_freq_list.
+     */
+    u16 scanned_freq_num;
+    /* Pointer to an array containing scanned_freq_num values comprising the
+     * set of frequencies that were scanned. Frequencies are specified as
+     * channel center frequencies in MHz. May be NULL if scannedFreqListLen is
+     * 0.
+     */
+    const u32 *scanned_freq_list;
+    /* The total number of cached results returned. */
+    u8 result_cnt;
+    /* Pointer to an array containing result_cnt entries. May be NULL if
+     * result_cnt is 0.
+     */
+    const wifi_cached_scan_result *results;
+} wifi_cached_scan_report;
+
+/* callback for reporting cached scan report */
+typedef struct {
+  void (*on_cached_scan_results) (wifi_cached_scan_report *cache_report);
+} wifi_cached_scan_result_handler;
+#endif
diff --git a/wifi/legacy_headers/include/hardware_legacy/wifi_config.h b/wifi/legacy_headers/include/hardware_legacy/wifi_config.h
new file mode 100644
index 0000000..9ddf8b8
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/wifi_config.h
@@ -0,0 +1,45 @@
+#include "wifi_hal.h"
+
+#ifndef __WIFI_HAL_CONFIG_H
+#define __WIFI_HAL_CONFIG_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#define CONFIG_MAJOR_VERSION      1
+#define CONFIG_MINOR_VERSION      0
+#define CONFIG_MICRO_VERSION      0
+
+// whether the wifi chipset wakes at every dtim beacon or a multiple of the dtim period
+// if extended_dtim is set to 3, the STA shall wake up every 3 DTIM beacons
+wifi_error wifi_extended_dtim_config_set(wifi_request_id id,
+        wifi_interface_handle iface, int extended_dtim);
+
+//set the country code to driver
+wifi_error wifi_set_country_code(wifi_interface_handle iface, const char* country_code);
+
+//set the wifi_iface stats averaging factor used to calculate
+// statistics like average the TSF offset or average number of frame leaked
+// For instance, upon beacon reception:
+//    current_avg = ((beacon_TSF - TBTT) * factor + previous_avg * (0x10000 - factor) ) / 0x10000
+// For instance, when evaluating leaky APs:
+//    current_avg = ((num frame received within guard time) * factor + previous_avg * (0x10000 - factor)) / 0x10000
+
+wifi_error wifi_set_beacon_wifi_iface_stats_averaging_factor(wifi_request_id id, wifi_interface_handle iface,
+        u16 factor);
+
+// configure guard time, i.e. when implementing IEEE power management based on
+// frame control PM bit, how long driver waits before shutting down the radio and
+// after receiving an ACK for a data frame with PM bit set
+wifi_error wifi_set_guard_time(wifi_request_id id, wifi_interface_handle iface,
+        u32 guard_time);
+
+#ifdef __cplusplus
+}
+
+#endif /* __cplusplus */
+
+#endif /*__WIFI_HAL_STATS_ */
+
diff --git a/wifi/legacy_headers/include/hardware_legacy/wifi_hal.h b/wifi/legacy_headers/include/hardware_legacy/wifi_hal.h
new file mode 100644
index 0000000..9c82e80
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/wifi_hal.h
@@ -0,0 +1,1389 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __WIFI_HAL_H__
+#define __WIFI_HAL_H__
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+#include <stdint.h>
+
+#define IFNAMSIZ 16
+#define UNSPECIFIED -1 // wifi HAL common definition for unspecified value
+
+/* typedefs */
+typedef unsigned char byte;
+typedef unsigned char u8;
+typedef signed char s8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef int32_t s32;
+typedef uint64_t u64;
+typedef int64_t s64;
+typedef int wifi_request_id;
+typedef int wifi_channel;                       // indicates channel frequency in MHz
+typedef int wifi_rssi;
+typedef int wifi_radio;
+typedef byte mac_addr[6];
+typedef byte oui[3];
+typedef int64_t wifi_timestamp;                 // In microseconds (us)
+typedef int64_t wifi_timespan;                  // In picoseconds  (ps)
+typedef uint64_t feature_set;
+
+/* forward declarations */
+struct wifi_info;
+struct wifi_interface_info;
+typedef struct wifi_info *wifi_handle;
+typedef struct wifi_interface_info *wifi_interface_handle;
+
+/* WiFi Common definitions */
+/* channel operating width */
+typedef enum {
+    WIFI_CHAN_WIDTH_20    = 0,
+    WIFI_CHAN_WIDTH_40    = 1,
+    WIFI_CHAN_WIDTH_80    = 2,
+    WIFI_CHAN_WIDTH_160   = 3,
+    WIFI_CHAN_WIDTH_80P80 = 4,
+    WIFI_CHAN_WIDTH_5     = 5,
+    WIFI_CHAN_WIDTH_10    = 6,
+    WIFI_CHAN_WIDTH_320   = 7,
+    WIFI_CHAN_WIDTH_INVALID = -1
+} wifi_channel_width;
+
+/* Multi-Link Operation modes */
+typedef enum {
+  WIFI_MLO_MODE_DEFAULT          = 0,
+  WIFI_MLO_MODE_LOW_LATENCY      = 1,
+  WIFI_MLO_MODE_HIGH_THROUGHPUT  = 2,
+  WIFI_MLO_MODE_LOW_POWER        = 3,
+} wifi_mlo_mode;
+
+/* Pre selected Power scenarios to be applied from BDF file */
+typedef enum {
+    WIFI_POWER_SCENARIO_INVALID          = -2,
+    WIFI_POWER_SCENARIO_DEFAULT          = -1,
+    WIFI_POWER_SCENARIO_VOICE_CALL       = 0,
+    WIFI_POWER_SCENARIO_ON_HEAD_CELL_OFF = 1,
+    WIFI_POWER_SCENARIO_ON_HEAD_CELL_ON  = 2,
+    WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF = 3,
+    WIFI_POWER_SCENARIO_ON_BODY_CELL_ON  = 4,
+    WIFI_POWER_SCENARIO_ON_BODY_BT       = 5,
+    WIFI_POWER_SCENARIO_ON_HEAD_HOTSPOT  = 6,
+    WIFI_POWER_SCENARIO_ON_HEAD_HOTSPOT_MMW = 7,
+    WIFI_POWER_SCENARIO_ON_BODY_CELL_ON_BT = 8,
+    WIFI_POWER_SCENARIO_ON_BODY_HOTSPOT = 9,
+    WIFI_POWER_SCENARIO_ON_BODY_HOTSPOT_BT = 10,
+    WIFI_POWER_SCENARIO_ON_BODY_HOTSPOT_MMW = 11,
+    WIFI_POWER_SCENARIO_ON_BODY_HOTSPOT_BT_MMW = 12,
+    WIFI_POWER_SCENARIO_ON_HEAD_CELL_OFF_UNFOLDED = 13,
+    WIFI_POWER_SCENARIO_ON_HEAD_CELL_ON_UNFOLDED = 14,
+    WIFI_POWER_SCENARIO_ON_HEAD_HOTSPOT_UNFOLDED = 15,
+    WIFI_POWER_SCENARIO_ON_HEAD_HOTSPOT_MMW_UNFOLDED = 16,
+    WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF_UNFOLDED = 17,
+    WIFI_POWER_SCENARIO_ON_BODY_BT_UNFOLDED = 18,
+    WIFI_POWER_SCENARIO_ON_BODY_CELL_ON_UNFOLDED = 19,
+    WIFI_POWER_SCENARIO_ON_BODY_CELL_ON_BT_UNFOLDED = 20,
+    WIFI_POWER_SCENARIO_ON_BODY_HOTSPOT_UNFOLDED = 21,
+    WIFI_POWER_SCENARIO_ON_BODY_HOTSPOT_BT_UNFOLDED = 22,
+    WIFI_POWER_SCENARIO_ON_BODY_HOTSPOT_MMW_UNFOLDED = 23,
+    WIFI_POWER_SCENARIO_ON_BODY_HOTSPOT_BT_MMW_UNFOLDED = 24,
+    WIFI_POWER_SCENARIO_ON_BODY_REAR_CAMERA = 25,
+    WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF_UNFOLDED_CAP = 26,
+    WIFI_POWER_SCENARIO_ON_BODY_BT_UNFOLDED_CAP = 27,
+    WIFI_POWER_SCENARIO_ON_BODY_CELL_ON_UNFOLDED_CAP = 28,
+    WIFI_POWER_SCENARIO_ON_BODY_CELL_ON_BT_UNFOLDED_CAP = 29,
+} wifi_power_scenario;
+
+typedef enum {
+  WIFI_LATENCY_MODE_NORMAL    = 0,
+  WIFI_LATENCY_MODE_LOW       = 1,
+} wifi_latency_mode;
+
+/* Wifi Thermal mitigation modes */
+typedef enum {
+  WIFI_MITIGATION_NONE      = 0,
+  WIFI_MITIGATION_LIGHT     = 1,
+  WIFI_MITIGATION_MODERATE  = 2,
+  WIFI_MITIGATION_SEVERE    = 3,
+  WIFI_MITIGATION_CRITICAL  = 4,
+  WIFI_MITIGATION_EMERGENCY = 5,
+} wifi_thermal_mode;
+
+/*
+ * Wifi voice over IP mode
+ * may add new modes later, for example, voice + video over IP mode.
+ */
+typedef enum {
+  WIFI_VOIP_MODE_OFF = 0,
+  WIFI_VOIP_MODE_VOICE  = 1,
+} wifi_voip_mode;
+
+/* List of interface types supported */
+typedef enum {
+  WIFI_INTERFACE_TYPE_STA = 0,
+  WIFI_INTERFACE_TYPE_AP  = 1,
+  WIFI_INTERFACE_TYPE_P2P = 2,
+  WIFI_INTERFACE_TYPE_NAN = 3,
+  WIFI_INTERFACE_TYPE_AP_BRIDGED = 4,
+} wifi_interface_type;
+
+/*
+ * enum wlan_mac_band - Band information corresponding to the WLAN MAC.
+ */
+typedef enum {
+/* WLAN MAC Operates in 2.4 GHz Band */
+    WLAN_MAC_2_4_BAND = 1 << 0,
+/* WLAN MAC Operates in 5 GHz Band */
+    WLAN_MAC_5_0_BAND = 1 << 1,
+/* WLAN MAC Operates in 6 GHz Band */
+    WLAN_MAC_6_0_BAND = 1 << 2,
+/* WLAN MAC Operates in 60 GHz Band */
+    WLAN_MAC_60_0_BAND = 1 << 3,
+} wlan_mac_band;
+
+/* List of chre nan rtt state */
+typedef enum {
+    CHRE_PREEMPTED = 0,
+    CHRE_UNAVAILABLE = 1,
+    CHRE_AVAILABLE = 2,
+} chre_nan_rtt_state;
+
+typedef struct {
+    wifi_channel_width width;
+    int center_frequency0;
+    int center_frequency1;
+    int primary_frequency;
+} wifi_channel_spec;
+
+/*
+ * wifi_usable_channel specifies a channel frequency, bandwidth, and bitmask
+ * of modes allowed on the channel.
+ */
+typedef struct {
+    /* Channel frequency in MHz */
+    wifi_channel freq;
+    /* Channel operating width (20, 40, 80, 160, 320 etc.) */
+    wifi_channel_width width;
+    /* BIT MASK of BIT(WIFI_INTERFACE_*) represented by |wifi_interface_mode|
+     * Bitmask does not represent concurrency.
+     * Examples:
+     * - If a channel is usable only for STA, then only the WIFI_INTERFACE_STA
+     *   bit would be set for that channel.
+     * - If 5GHz SAP is not allowed, then none of the 5GHz channels will have
+     *   WIFI_INTERFACE_SOFTAP bit set.
+     * Note: TDLS bit is set only if there is a STA connection. TDLS bit is set
+     * on non-STA channels only if TDLS off channel is supported.
+     */
+    u32 iface_mode_mask;
+} wifi_usable_channel;
+
+/*
+ * wifi_usable_channel_filter
+ */
+typedef enum {
+  /* Filter Wifi channels that should be avoided due to cellular coex
+   * restrictions. Some Wifi channels can have extreme interference
+   * from/to cellular due to short frequency separation with neighboring
+   * cellular channels or when there is harmonic and intermodulation
+   * interference. Channels which only have some performance degradation
+   * (e.g. power back off is sufficient to deal with coexistence issue)
+   * can be included and should not be filtered out.
+   */
+  WIFI_USABLE_CHANNEL_FILTER_CELLULAR_COEXISTENCE  = 1 << 0,
+  /* Filter channels due to concurrency state.
+   * Examples:
+   * - 5GHz SAP operation may be supported in standalone mode, but if
+   *  there is STA connection on 5GHz DFS channel, none of the 5GHz
+   *  channels are usable for SAP if device does not support DFS SAP mode.
+   * - P2P GO may not be supported on indoor channels in EU during
+   *  standalone mode but if there is a STA connection on indoor channel,
+   *  P2P GO may be supported by some vendors on the same STA channel.
+   */
+  WIFI_USABLE_CHANNEL_FILTER_CONCURRENCY  = 1 << 1,
+  /* This Filter queries Wifi channels and bands that are supported for
+   * NAN3.1 Instant communication mode. This filter should only be applied to NAN interface.
+   * If 5G is supported default discovery channel 149/44 is considered,
+   * If 5G is not supported then channel 6 has to be considered.
+   * Based on regulatory domain if channel 149 and 44 are restricted, channel 6 should
+   * be considered for instant communication channel
+   */
+  WIFI_USABLE_CHANNEL_FILTER_NAN_INSTANT_MODE   = 1 << 2,
+} wifi_usable_channel_filter;
+
+typedef enum {
+    WIFI_SUCCESS = 0,
+    WIFI_ERROR_NONE = 0,
+    WIFI_ERROR_UNKNOWN = -1,
+    WIFI_ERROR_UNINITIALIZED = -2,
+    WIFI_ERROR_NOT_SUPPORTED = -3,
+    WIFI_ERROR_NOT_AVAILABLE = -4,              // Not available right now, but try later
+    WIFI_ERROR_INVALID_ARGS = -5,
+    WIFI_ERROR_INVALID_REQUEST_ID = -6,
+    WIFI_ERROR_TIMED_OUT = -7,
+    WIFI_ERROR_TOO_MANY_REQUESTS = -8,          // Too many instances of this request
+    WIFI_ERROR_OUT_OF_MEMORY = -9,
+    WIFI_ERROR_BUSY = -10,
+} wifi_error;
+
+typedef enum {
+    WIFI_ACCESS_CATEGORY_BEST_EFFORT = 0,
+    WIFI_ACCESS_CATEGORY_BACKGROUND = 1,
+    WIFI_ACCESS_CATEGORY_VIDEO = 2,
+    WIFI_ACCESS_CATEGORY_VOICE = 3
+} wifi_access_category;
+
+/* Channel category mask */
+typedef enum {
+    WIFI_INDOOR_CHANNEL = 1 << 0,
+    WIFI_DFS_CHANNEL    = 1 << 1,
+} wifi_channel_category;
+
+/* Antenna configuration */
+typedef enum {
+  WIFI_ANTENNA_UNSPECIFIED = 0,
+  WIFI_ANTENNA_1X1         = 1,
+  WIFI_ANTENNA_2X2         = 2,
+  WIFI_ANTENNA_3X3         = 3,
+  WIFI_ANTENNA_4X4         = 4,
+} wifi_antenna_configuration;
+
+/* Wifi Radio configuration */
+typedef struct {
+    /* Operating band */
+    wlan_mac_band band;
+    /* Antenna configuration */
+    wifi_antenna_configuration antenna_cfg;
+} wifi_radio_configuration;
+
+/* WiFi Radio Combination  */
+typedef struct {
+    u32 num_radio_configurations;
+    wifi_radio_configuration radio_configurations[];
+} wifi_radio_combination;
+
+/* WiFi Radio combinations matrix */
+/* For Example in case of a chip which has two radios, where one radio is
+ * capable of 2.4GHz 2X2 only and another radio which is capable of either
+ * 5GHz or 6GHz 2X2, number of possible radio combinations in this case
+ * are 5 and possible combinations are
+ *                            {{{2G 2X2}}, //Standalone 2G
+ *                            {{5G 2X2}}, //Standalone 5G
+ *                            {{6G 2X2}}, //Standalone 6G
+ *                            {{2G 2X2}, {5G 2X2}}, //2G+5G DBS
+ *                            {{2G 2X2}, {6G 2X2}}} //2G+6G DBS
+ * Note: Since this chip doesn’t support 5G+6G simultaneous operation
+ * as there is only one radio which can support both, So it can only
+ * do MCC 5G+6G. This table should not get populated with possible MCC
+ * configurations. This is only for simultaneous radio configurations
+ * (such as Standalone, multi band simultaneous or single band simultaneous).
+ */
+typedef struct {
+    u32 num_radio_combinations;
+    /* Each row represents possible radio combinations */
+    wifi_radio_combination radio_combinations[];
+} wifi_radio_combination_matrix;
+
+typedef struct {
+    /**
+     * Maximum number of links supported by the chip for MLO association.
+     */
+    u32 max_mlo_association_link_count;
+    /**
+     * Maximum number of Simultaneous Transmit and Receive (STR) links used
+     * in Multi-Link Operation. The maximum number of STR links used can be
+     * different from the maximum number of radios supported by the chip.
+     *
+     * This is a static configuration of the chip.
+     */
+    u32 max_mlo_str_link_count;
+    /**
+     * Maximum number of concurrent TDLS sessions supported by the chip.
+     *
+     */
+    u32 max_concurrent_tdls_session_count;
+} wifi_chip_capabilities;
+
+#define MAX_IFACE_COMBINATIONS 16
+#define MAX_IFACE_LIMITS 8
+
+/* Wifi interface limit
+ * Example:
+ * 1. To allow STA+STA:
+ *     wifi_iface_limit limit1 = {
+ *         .max_limit = 2,
+ *         .iface_mask = BIT(WIFI_INTERFACE_TYPE_STA)
+ *     };
+ * 2. To allow Single P2P/NAN:
+ *     wifi_iface_limit limit2 = {
+ *         .max_limit = 1,
+ *         .iface_mask = BIT(WIFI_INTERFACE_TYPE_P2P)
+ *                       | BIT(WIFI_INTERFACE_TYPE_NAN)
+ *     };
+ */
+typedef struct {
+    /* Max number of interfaces of same type */
+    u32 max_limit;
+    /* BIT mask of interfaces from wifi_interface_type */
+    u32 iface_mask;
+} wifi_iface_limit;
+
+/* Wifi Interface combination
+ * Example:
+ * 1. To allow STA+SAP:
+ *     wifi_iface_limit limits1[] = {
+ *         {1, BIT(WIFI_INTERFACE_TYPE_STA)},
+ *     };
+ *     wifi_iface_limit limits2[] = {
+ *         {1, BIT(WIFI_INTERFACE_TYPE_AP)},
+ *     };
+ *     wifi_iface_combination comb1 = {
+ *         .max_ifaces = 2,
+ *         .num_iface_limits = 2,
+ *         .iface_limits = {limits1, limits2,},
+ *     };
+ *
+ * 2. To allow STA+P2P/NAN:
+ *     wifi_iface_limit limits3[] = {
+ *         {1, BIT(WIFI_INTERFACE_TYPE_STA)},
+ *         {1, BIT(WIFI_INTERFACE_TYPE_P2P)
+               | BIT(WIFI_INTERFACE_TYPE_NAN)},
+ *     };
+ *     wifi_iface_combination comb2 = {
+ *         .max_ifaces = 2,
+ *         .num_iface_limits = 1,
+ *         .iface_limits = {limits3,},
+ *     };
+ *
+ * 3. To allow STA+STA/AP:
+ *     wifi_iface_limit limits4[] = {
+ *         {2, BIT(WIFI_INTERFACE_TYPE_STA)},
+ *     };
+ *     wifi_iface_limit limits5[] = {
+ *         {1, BIT(WIFI_INTERFACE_TYPE_STA)},
+ *         {1, BIT(WIFI_INTERFACE_TYPE_AP)},
+ *     };
+ *     wifi_iface_combination comb3 = {
+ *         .max_ifaces = 2,
+ *         .num_iface_limits = 2,
+ *         .iface_limits = {limits4, limits5,},
+ *     };
+ *
+ * 4. To allow AP_BRIDGED (AP+AP in bridge mode):
+ *     wifi_iface_limit limits6[] = {
+ *         {1, BIT(WIFI_INTERFACE_TYPE_AP_BRIDGED)},
+ *     };
+ *     wifi_iface_combination comb4 = {
+ *         .max_ifaces = 1,
+ *         .num_iface_limits = 1,
+ *         .iface_limits = {limits6,},
+ *     };
+ */
+typedef struct {
+    /* Maximum number of concurrent interfaces allowed in this combination */
+    u32 max_ifaces;
+    /* Total number of interface limits in a combination */
+    u32 num_iface_limits;
+    /* Interface limits */
+    wifi_iface_limit iface_limits[MAX_IFACE_LIMITS];
+} wifi_iface_combination;
+
+/* Wifi Interface concurrency combination matrix
+ * Example:
+ * 1. To allow 2 port concurrency with limts defined in above comments:
+ *     wifi_iface_concurrency_matrix iface_concurrency_matrix = {
+ *         .num_iface_combinations = 4,
+ *         .iface_combinations = {comb1, comb2, comb3, comb4, }
+ *     };
+ */
+typedef struct {
+    /* Total count of possible iface combinations */
+    u32 num_iface_combinations;
+    /* Interface combinations */
+    wifi_iface_combination iface_combinations[MAX_IFACE_COMBINATIONS];
+} wifi_iface_concurrency_matrix;
+
+/* Initialize/Cleanup */
+
+wifi_error wifi_initialize(wifi_handle *handle);
+
+/**
+ * wifi_wait_for_driver
+ * Function should block until the driver is ready to proceed.
+ * Any errors from this function is considered fatal & will fail the HAL startup sequence.
+ *
+ * on success returns WIFI_SUCCESS
+ * on failure returns WIFI_ERROR_TIMED_OUT
+ */
+wifi_error wifi_wait_for_driver_ready(void);
+
+typedef void (*wifi_cleaned_up_handler) (wifi_handle handle);
+void wifi_cleanup(wifi_handle handle, wifi_cleaned_up_handler handler);
+void wifi_event_loop(wifi_handle handle);
+
+/* Error handling */
+void wifi_get_error_info(wifi_error err, const char **msg); // return a pointer to a static string
+
+/* Feature enums */
+#define WIFI_FEATURE_INFRA              (uint64_t)0x1      // Basic infrastructure mode
+#define WIFI_FEATURE_INFRA_5G           (uint64_t)0x2      // Support for 5 GHz Band
+#define WIFI_FEATURE_HOTSPOT            (uint64_t)0x4      // Support for GAS/ANQP
+#define WIFI_FEATURE_P2P                (uint64_t)0x8      // Wifi-Direct
+#define WIFI_FEATURE_SOFT_AP            (uint64_t)0x10      // Soft AP
+#define WIFI_FEATURE_GSCAN              (uint64_t)0x20      // Google-Scan APIs
+#define WIFI_FEATURE_NAN                (uint64_t)0x40      // Neighbor Awareness Networking
+#define WIFI_FEATURE_D2D_RTT            (uint64_t)0x80      // Device-to-device RTT
+#define WIFI_FEATURE_D2AP_RTT           (uint64_t)0x100      // Device-to-AP RTT
+#define WIFI_FEATURE_BATCH_SCAN         (uint64_t)0x200      // Batched Scan (legacy)
+#define WIFI_FEATURE_PNO                (uint64_t)0x400      // Preferred network offload
+#define WIFI_FEATURE_ADDITIONAL_STA     (uint64_t)0x800      // Support for two STAs
+#define WIFI_FEATURE_TDLS               (uint64_t)0x1000      // Tunnel directed link setup
+#define WIFI_FEATURE_TDLS_OFFCHANNEL    (uint64_t)0x2000      // Support for TDLS off channel
+#define WIFI_FEATURE_EPR                (uint64_t)0x4000      // Enhanced power reporting
+#define WIFI_FEATURE_AP_STA             (uint64_t)0x8000      // Support for AP STA Concurrency
+#define WIFI_FEATURE_LINK_LAYER_STATS   (uint64_t)0x10000     // Link layer stats collection
+#define WIFI_FEATURE_LOGGER             (uint64_t)0x20000     // WiFi Logger
+#define WIFI_FEATURE_HAL_EPNO           (uint64_t)0x40000     // WiFi PNO enhanced
+#define WIFI_FEATURE_RSSI_MONITOR       (uint64_t)0x80000     // RSSI Monitor
+#define WIFI_FEATURE_MKEEP_ALIVE        (uint64_t)0x100000    // WiFi mkeep_alive
+#define WIFI_FEATURE_CONFIG_NDO         (uint64_t)0x200000    // ND offload configure
+#define WIFI_FEATURE_TX_TRANSMIT_POWER  (uint64_t)0x400000    // Capture Tx transmit power levels
+#define WIFI_FEATURE_CONTROL_ROAMING    (uint64_t)0x800000    // Enable/Disable firmware roaming
+#define WIFI_FEATURE_IE_WHITELIST       (uint64_t)0x1000000   // Support Probe IE white listing
+#define WIFI_FEATURE_SCAN_RAND          (uint64_t)0x2000000   // Support MAC & Probe Sequence Number randomization
+#define WIFI_FEATURE_SET_TX_POWER_LIMIT (uint64_t)0x4000000   // Support Tx Power Limit setting
+#define WIFI_FEATURE_USE_BODY_HEAD_SAR  (uint64_t)0x8000000   // Support Using Body/Head Proximity for SAR
+#define WIFI_FEATURE_DYNAMIC_SET_MAC    (uint64_t)0x10000000  // Support changing MAC address without iface reset(down and up)
+#define WIFI_FEATURE_SET_LATENCY_MODE   (uint64_t)0x40000000  // Support Latency mode setting
+#define WIFI_FEATURE_P2P_RAND_MAC       (uint64_t)0x80000000  // Support P2P MAC randomization
+#define WIFI_FEATURE_INFRA_60G          (uint64_t)0x100000000 // Support for 60GHz Band
+#define WIFI_FEATURE_AFC_CHANNEL        (uint64_t)0x200000000 // Support for setting 6GHz AFC channel allowance
+#define WIFI_FEATURE_T2LM_NEGO          (uint64_t)0x400000000 // Support for TID-To-Link mapping negotiation
+#define WIFI_FEATURE_ROAMING_MODE_CONTROL   (uint64_t)0x800000000 // Support for configuring roaming mode
+#define WIFI_FEATURE_SET_VOIP_MODE          (uint64_t)0x1000000000 // Support Voip mode setting
+#define WIFI_FEATURE_CACHED_SCAN_RESULTS    (uint64_t)0x2000000000 // Support cached scan result report
+// Add more features here
+
+#define IS_MASK_SET(mask, flags)        (((flags) & (mask)) == (mask))
+
+#define IS_SUPPORTED_FEATURE(feature, featureSet)       IS_MASK_SET(feature, featureSet)
+
+/* Feature set */
+wifi_error wifi_get_supported_feature_set(wifi_interface_handle handle, feature_set *set);
+
+/*
+ * Each row represents a valid feature combination;
+ * all other combinations are invalid!
+ */
+wifi_error wifi_get_concurrency_matrix(wifi_interface_handle handle, int set_size_max,
+        feature_set set[], int *set_size);
+
+/* multiple interface support */
+
+wifi_error wifi_get_ifaces(wifi_handle handle, int *num_ifaces, wifi_interface_handle **ifaces);
+wifi_error wifi_get_iface_name(wifi_interface_handle iface, char *name, size_t size);
+wifi_interface_handle wifi_get_iface_handle(wifi_handle handle, char *name);
+
+/* STA + STA support - Supported if WIFI_FEATURE_ADDITIONAL_STA is set */
+
+/**
+ * Invoked to indicate that the provided iface is the primary STA iface when there are more
+ * than 1 STA iface concurrently active.
+ *
+ * Note: If the wifi firmware/chip cannot support multiple instances of any offload
+ * (like roaming, APF, rssi threshold, etc), the firmware should ensure that these
+ * offloads are at least enabled for the primary interface. If the new primary interface is
+ * already connected to a network, the firmware must switch all the offloads on
+ * this new interface without disconnecting.
+ */
+wifi_error wifi_multi_sta_set_primary_connection(wifi_handle handle, wifi_interface_handle iface);
+
+/**
+ * When there are 2 or more simultaneous STA connections, this use case hint indicates what
+ * use-case is being enabled by the framework. This use case hint can be used by the firmware
+ * to modify various firmware configurations like:
+ *  - Allowed BSSIDs the firmware can choose for the initial connection/roaming attempts.
+ *  - Duty cycle to choose for the 2 STA connections if the radio is in MCC mode.
+ *  - Whether roaming, APF and other offloads needs to be enabled or not.
+ *
+ * Note:
+ *  - This will be invoked before an active wifi connection is established on the second interface.
+ *  - This use-case hint is implicitly void when the second STA interface is brought down.
+ */
+typedef enum {
+    /**
+     * Usage:
+     * - This will be sent down for make before break use-case.
+     * - Platform is trying to speculatively connect to a second network and evaluate it without
+     *   disrupting the primary connection.
+     *
+     * Requirements for Firmware:
+     * - Do not reduce the number of tx/rx chains of primary connection.
+     * - If using MCC, should set the MCC duty cycle of the primary connection to be higher than
+     *   the secondary connection (maybe 70/30 split).
+     * - Should pick the best BSSID for the secondary STA (disregard the chip mode) independent of
+     *   the primary STA:
+     *     - Don’t optimize for DBS vs MCC/SCC
+     * - Should not impact the primary connection’s bssid selection:
+     *     - Don’t downgrade chains of the existing primary connection.
+     *     - Don’t optimize for DBS vs MCC/SCC.
+     */
+    WIFI_DUAL_STA_TRANSIENT_PREFER_PRIMARY = 0,
+    /**
+     * Usage:
+     * - This will be sent down for any app requested peer to peer connections.
+     * - In this case, both the connections needs to be allocated equal resources.
+     * - For the peer to peer use case, BSSID for the secondary connection will be chosen by the
+     *   framework.
+     *
+     * Requirements for Firmware:
+     * - Can choose MCC or DBS mode depending on the MCC efficiency and HW capability.
+     * - If using MCC, set the MCC duty cycle of the primary connection to be equal to the secondary
+     *   connection.
+     * - Prefer BSSID candidates which will help provide the best "overall" performance for both the
+     *   connections.
+     */
+    WIFI_DUAL_STA_NON_TRANSIENT_UNBIASED = 1
+} wifi_multi_sta_use_case;
+
+wifi_error wifi_multi_sta_set_use_case(wifi_handle handle, wifi_multi_sta_use_case use_case);
+
+/* Configuration events */
+
+typedef struct {
+    void (*on_country_code_changed)(char code[2]);      // We can get this from supplicant too
+
+    // More event handlers
+} wifi_event_handler;
+
+typedef struct {
+    char iface_name[IFNAMSIZ + 1];
+    wifi_channel channel;
+} wifi_iface_info;
+
+typedef struct {
+    u32 wlan_mac_id;
+/* BIT MASK of BIT(WLAN_MAC*) as represented by wlan_mac_band */
+    u32 mac_band;
+/* Represents the connected Wi-Fi interfaces associated with each MAC */
+    int num_iface;
+    wifi_iface_info *iface_info;
+} wifi_mac_info;
+
+typedef struct {
+        void (*on_radio_mode_change)(wifi_request_id id, unsigned num_mac,
+                                     wifi_mac_info *mac_info);
+} wifi_radio_mode_change_handler;
+
+typedef struct {
+        void (*on_rssi_threshold_breached)(wifi_request_id id, u8 *cur_bssid, s8 cur_rssi);
+} wifi_rssi_event_handler;
+
+typedef struct {
+        void (*on_subsystem_restart)(const char* error);
+} wifi_subsystem_restart_handler;
+
+typedef struct {
+        void (*on_chre_nan_rtt_change)(chre_nan_rtt_state state);
+} wifi_chre_handler;
+
+wifi_error wifi_set_iface_event_handler(wifi_request_id id, wifi_interface_handle iface, wifi_event_handler eh);
+wifi_error wifi_reset_iface_event_handler(wifi_request_id id, wifi_interface_handle iface);
+
+wifi_error wifi_set_nodfs_flag(wifi_interface_handle handle, u32 nodfs);
+wifi_error wifi_select_tx_power_scenario(wifi_interface_handle handle, wifi_power_scenario scenario);
+wifi_error wifi_reset_tx_power_scenario(wifi_interface_handle handle);
+wifi_error wifi_set_latency_mode(wifi_interface_handle handle, wifi_latency_mode mode);
+wifi_error wifi_map_dscp_access_category(wifi_handle handle,
+                                         uint32_t start, uint32_t end,
+                                         uint32_t access_category);
+wifi_error wifi_reset_dscp_mapping(wifi_handle handle);
+
+wifi_error wifi_set_subsystem_restart_handler(wifi_handle handle,
+                                              wifi_subsystem_restart_handler handler);
+
+/**
+ *  Wifi HAL Thermal Mitigation API
+ *
+ *  wifi_handle : wifi global handle (note: this is not a interface specific
+ *  command). Mitigation is expected to be applied across all active interfaces
+ *  The implementation and the mitigation action mapping to each mode is chip
+ *  specific. Mitigation will be active until Wifi is turned off or
+ *  WIFI_MITIGATION_NONE mode is sent
+ *
+ *  mode: Thermal mitigation mode
+ *  WIFI_MITIGATION_NONE     : Clear all Wifi thermal mitigation actions
+ *  WIFI_MITIGATION_LIGHT    : Light Throttling where UX is not impacted
+ *  WIFI_MITIGATION_MODERATE : Moderate throttling where UX not largely impacted
+ *  WIFI_MITIGATION_SEVERE   : Severe throttling where UX is largely impacted
+ *  WIFI_MITIGATION_CRITICAL : Platform has done everything to reduce power
+ *  WIFI_MITIGATION_EMERGENCY: Key components in platform are shutting down
+ *
+ *  completion_window
+ *  Deadline (in milliseconds) to complete this request, value 0 implies apply
+ *  immediately. Deadline is basically a relaxed limit and allows vendors to
+ *  apply the mitigation within the window (if it cannot apply immediately)
+ *
+ *  Return
+ *  WIFI_ERROR_NOT_SUPPORTED : Chip does not support thermal mitigation
+ *  WIFI_ERROR_BUSY          : Mitigation is supported, but retry later
+ *  WIFI_ERROR_NONE          : Mitigation request has been accepted
+ */
+wifi_error wifi_set_thermal_mitigation_mode(wifi_handle handle,
+                                            wifi_thermal_mode mode,
+                                            u32 completion_window);
+
+
+typedef struct rx_data_cnt_details_t {
+    int rx_unicast_cnt;     /*Total rx unicast packet which woke up host */
+    int rx_multicast_cnt;   /*Total rx multicast packet which woke up host */
+    int rx_broadcast_cnt;   /*Total rx broadcast packet which woke up host */
+} RX_DATA_WAKE_CNT_DETAILS;
+
+typedef struct rx_wake_pkt_type_classification_t {
+    int icmp_pkt;   /*wake icmp packet count */
+    int icmp6_pkt;  /*wake icmp6 packet count */
+    int icmp6_ra;   /*wake icmp6 RA packet count */
+    int icmp6_na;   /*wake icmp6 NA packet count */
+    int icmp6_ns;   /*wake icmp6 NS packet count */
+    //ToDo: Any more interesting classification to add?
+} RX_WAKE_PKT_TYPE_CLASSFICATION;
+
+typedef struct rx_multicast_cnt_t{
+    int ipv4_rx_multicast_addr_cnt; /*Rx wake packet was ipv4 multicast */
+    int ipv6_rx_multicast_addr_cnt; /*Rx wake packet was ipv6 multicast */
+    int other_rx_multicast_addr_cnt;/*Rx wake packet was non-ipv4 and non-ipv6*/
+} RX_MULTICAST_WAKE_DATA_CNT;
+
+/*
+ * Structure holding all the driver/firmware wake count reasons.
+ *
+ * Buffers for the array fields (cmd_event_wake_cnt/driver_fw_local_wake_cnt)
+ * are allocated and freed by the framework. The size of each allocated
+ * array is indicated by the corresponding |_cnt| field. HAL needs to fill in
+ * the corresponding |_used| field to indicate the number of elements used in
+ * the array.
+ */
+typedef struct wlan_driver_wake_reason_cnt_t {
+    int total_cmd_event_wake;    /* Total count of cmd event wakes */
+    int *cmd_event_wake_cnt;     /* Individual wake count array, each index a reason */
+    int cmd_event_wake_cnt_sz;   /* Max number of cmd event wake reasons */
+    int cmd_event_wake_cnt_used; /* Number of cmd event wake reasons specific to the driver */
+
+    int total_driver_fw_local_wake;    /* Total count of drive/fw wakes, for local reasons */
+    int *driver_fw_local_wake_cnt;     /* Individual wake count array, each index a reason */
+    int driver_fw_local_wake_cnt_sz;   /* Max number of local driver/fw wake reasons */
+    int driver_fw_local_wake_cnt_used; /* Number of local driver/fw wake reasons specific to the driver */
+
+    int total_rx_data_wake;     /* total data rx packets, that woke up host */
+    RX_DATA_WAKE_CNT_DETAILS rx_wake_details;
+    RX_WAKE_PKT_TYPE_CLASSFICATION rx_wake_pkt_classification_info;
+    RX_MULTICAST_WAKE_DATA_CNT rx_multicast_wake_pkt_info;
+} WLAN_DRIVER_WAKE_REASON_CNT;
+
+/* Wi-Fi coex channel avoidance support */
+
+#define WIFI_COEX_NO_POWER_CAP (int32_t)0x7FFFFFF
+
+typedef enum {
+    WIFI_AWARE = 1 << 0,
+    SOFTAP = 1 << 1,
+    WIFI_DIRECT = 1 << 2
+} wifi_coex_restriction;
+
+/**
+ * Representation of a Wi-Fi channel to be avoided for Wi-Fi coex channel avoidance.
+ *
+ * band is represented as an WLAN_MAC* enum value defined in wlan_mac_band.
+ * If power_cap_dbm is WIFI_COEX_NO_POWER_CAP, then no power cap should be applied if the specified
+ * channel is used.
+ */
+typedef struct {
+    wlan_mac_band band;
+    u32 channel;
+    s32 power_cap_dbm;
+} wifi_coex_unsafe_channel;
+
+
+/* include various feature headers */
+
+#include "gscan.h"
+#include "link_layer_stats.h"
+#include "wifi_cached_scan_results.h"
+#include "rtt.h"
+#include "tdls.h"
+#include "wifi_logger.h"
+#include "wifi_config.h"
+#include "wifi_nan.h"
+#include "wifi_offload.h"
+#include "roam.h"
+#include "wifi_twt.h"
+
+//wifi HAL function pointer table
+typedef struct {
+    wifi_error (* wifi_initialize) (wifi_handle *);
+    wifi_error (* wifi_wait_for_driver_ready) (void);
+    void (* wifi_cleanup) (wifi_handle, wifi_cleaned_up_handler);
+    void (*wifi_event_loop)(wifi_handle);
+    void (* wifi_get_error_info) (wifi_error , const char **);
+    wifi_error (* wifi_get_supported_feature_set) (wifi_interface_handle, feature_set *);
+    wifi_error (* wifi_get_concurrency_matrix) (wifi_interface_handle, int, feature_set *, int *);
+    wifi_error (* wifi_set_scanning_mac_oui) (wifi_interface_handle, unsigned char *);
+    wifi_error (* wifi_get_supported_channels)(wifi_handle, int *, wifi_channel *);
+    wifi_error (* wifi_is_epr_supported)(wifi_handle);
+    wifi_error (* wifi_get_ifaces) (wifi_handle , int *, wifi_interface_handle **);
+    wifi_error (* wifi_get_iface_name) (wifi_interface_handle, char *name, size_t);
+    wifi_error (* wifi_set_iface_event_handler) (wifi_request_id,wifi_interface_handle ,
+            wifi_event_handler);
+    wifi_error (* wifi_reset_iface_event_handler) (wifi_request_id, wifi_interface_handle);
+    wifi_error (* wifi_start_gscan) (wifi_request_id, wifi_interface_handle, wifi_scan_cmd_params,
+            wifi_scan_result_handler);
+    wifi_error (* wifi_stop_gscan)(wifi_request_id, wifi_interface_handle);
+    wifi_error (* wifi_get_cached_gscan_results)(wifi_interface_handle, byte, int,
+            wifi_cached_scan_results *, int *);
+    wifi_error (* wifi_set_bssid_hotlist)(wifi_request_id, wifi_interface_handle,
+            wifi_bssid_hotlist_params, wifi_hotlist_ap_found_handler);
+    wifi_error (* wifi_reset_bssid_hotlist)(wifi_request_id, wifi_interface_handle);
+    wifi_error (* wifi_set_significant_change_handler)(wifi_request_id, wifi_interface_handle,
+            wifi_significant_change_params, wifi_significant_change_handler);
+    wifi_error (* wifi_reset_significant_change_handler)(wifi_request_id, wifi_interface_handle);
+    wifi_error (* wifi_get_gscan_capabilities)(wifi_interface_handle, wifi_gscan_capabilities *);
+    wifi_error (* wifi_set_link_stats) (wifi_interface_handle, wifi_link_layer_params);
+    wifi_error (* wifi_get_link_stats) (wifi_request_id,wifi_interface_handle,
+            wifi_stats_result_handler);
+    wifi_error (* wifi_clear_link_stats)(wifi_interface_handle,u32, u32 *, u8, u8 *);
+    wifi_error (* wifi_get_valid_channels)(wifi_interface_handle,int, int, wifi_channel *, int *);
+    wifi_error (* wifi_rtt_range_request)(wifi_request_id, wifi_interface_handle, unsigned,
+            wifi_rtt_config[], wifi_rtt_event_handler);
+    wifi_error (* wifi_rtt_range_request_v3)(wifi_request_id, wifi_interface_handle, unsigned,
+            wifi_rtt_config_v3[], wifi_rtt_event_handler_v3);
+    wifi_error (* wifi_rtt_range_cancel)(wifi_request_id,  wifi_interface_handle, unsigned,
+            mac_addr[]);
+    wifi_error (* wifi_get_rtt_capabilities)(wifi_interface_handle, wifi_rtt_capabilities *);
+    wifi_error (* wifi_get_rtt_capabilities_v3)(wifi_interface_handle, wifi_rtt_capabilities_v3 *);
+    wifi_error (* wifi_rtt_get_responder_info)(wifi_interface_handle iface,
+            wifi_rtt_responder *responder_info);
+    wifi_error (* wifi_enable_responder)(wifi_request_id id, wifi_interface_handle iface,
+            wifi_channel_info channel_hint, unsigned max_duration_seconds,
+            wifi_rtt_responder *responder_info);
+    wifi_error (* wifi_disable_responder)(wifi_request_id id, wifi_interface_handle iface);
+    wifi_error (* wifi_set_nodfs_flag)(wifi_interface_handle, u32);
+    wifi_error (* wifi_start_logging)(wifi_interface_handle, u32, u32, u32, u32, char *);
+    wifi_error (* wifi_set_epno_list)(wifi_request_id, wifi_interface_handle,
+            const wifi_epno_params *, wifi_epno_handler);
+    wifi_error (* wifi_reset_epno_list)(wifi_request_id, wifi_interface_handle);
+    wifi_error (* wifi_set_country_code)(wifi_interface_handle, const char *);
+    wifi_error (* wifi_get_firmware_memory_dump)( wifi_interface_handle iface,
+            wifi_firmware_memory_dump_handler handler);
+    wifi_error (* wifi_set_log_handler)(wifi_request_id id, wifi_interface_handle iface,
+        wifi_ring_buffer_data_handler handler);
+    wifi_error (* wifi_reset_log_handler)(wifi_request_id id, wifi_interface_handle iface);
+    wifi_error (* wifi_set_alert_handler)(wifi_request_id id, wifi_interface_handle iface,
+        wifi_alert_handler handler);
+    wifi_error (* wifi_reset_alert_handler)(wifi_request_id id, wifi_interface_handle iface);
+    wifi_error (* wifi_get_firmware_version)(wifi_interface_handle iface, char *buffer,
+            int buffer_size);
+    wifi_error (* wifi_get_ring_buffers_status)(wifi_interface_handle iface,
+            u32 *num_rings, wifi_ring_buffer_status *status);
+    wifi_error (* wifi_get_logger_supported_feature_set)(wifi_interface_handle iface,
+            unsigned int *support);
+    wifi_error (* wifi_get_ring_data)(wifi_interface_handle iface, char *ring_name);
+    wifi_error (* wifi_enable_tdls)(wifi_interface_handle, mac_addr, wifi_tdls_params *,
+            wifi_tdls_handler);
+    wifi_error (* wifi_disable_tdls)(wifi_interface_handle, mac_addr);
+    wifi_error (*wifi_get_tdls_status) (wifi_interface_handle, mac_addr, wifi_tdls_status *);
+    wifi_error (*wifi_get_tdls_capabilities)(wifi_interface_handle iface,
+            wifi_tdls_capabilities *capabilities);
+    wifi_error (* wifi_get_driver_version)(wifi_interface_handle iface, char *buffer,
+            int buffer_size);
+    wifi_error (* wifi_set_passpoint_list)(wifi_request_id id, wifi_interface_handle iface,
+            int num, wifi_passpoint_network *networks, wifi_passpoint_event_handler handler);
+    wifi_error (* wifi_reset_passpoint_list)(wifi_request_id id, wifi_interface_handle iface);
+    wifi_error (*wifi_set_lci) (wifi_request_id id, wifi_interface_handle iface,
+                                wifi_lci_information *lci);
+    wifi_error (*wifi_set_lcr) (wifi_request_id id, wifi_interface_handle iface,
+                                wifi_lcr_information *lcr);
+    wifi_error (*wifi_start_sending_offloaded_packet)(wifi_request_id id,
+                                wifi_interface_handle iface, u16 ether_type, u8 *ip_packet,
+                                u16 ip_packet_len, u8 *src_mac_addr, u8 *dst_mac_addr,
+                                u32 period_msec);
+    wifi_error (*wifi_stop_sending_offloaded_packet)(wifi_request_id id,
+                                wifi_interface_handle iface);
+    wifi_error (*wifi_start_rssi_monitoring)(wifi_request_id id, wifi_interface_handle
+                        iface, s8 max_rssi, s8 min_rssi, wifi_rssi_event_handler eh);
+    wifi_error (*wifi_stop_rssi_monitoring)(wifi_request_id id, wifi_interface_handle iface);
+    wifi_error (*wifi_get_wake_reason_stats)(wifi_interface_handle iface,
+                                WLAN_DRIVER_WAKE_REASON_CNT *wifi_wake_reason_cnt);
+    wifi_error (*wifi_configure_nd_offload)(wifi_interface_handle iface, u8 enable);
+    wifi_error (*wifi_get_driver_memory_dump)(wifi_interface_handle iface,
+                                wifi_driver_memory_dump_callbacks callbacks);
+    wifi_error (*wifi_start_pkt_fate_monitoring)(wifi_interface_handle iface);
+    wifi_error (*wifi_get_tx_pkt_fates)(wifi_interface_handle handle,
+        wifi_tx_report *tx_report_bufs,
+        size_t n_requested_fates,
+        size_t *n_provided_fates);
+    wifi_error (*wifi_get_rx_pkt_fates)(wifi_interface_handle handle,
+        wifi_rx_report *rx_report_bufs,
+        size_t n_requested_fates,
+        size_t *n_provided_fates);
+
+    /* NAN functions */
+    wifi_error (*wifi_nan_enable_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanEnableRequest* msg);
+    wifi_error (*wifi_nan_disable_request)(transaction_id id,
+        wifi_interface_handle iface);
+    wifi_error (*wifi_nan_publish_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanPublishRequest* msg);
+    wifi_error (*wifi_nan_publish_cancel_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanPublishCancelRequest* msg);
+    wifi_error (*wifi_nan_subscribe_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanSubscribeRequest* msg);
+    wifi_error (*wifi_nan_subscribe_cancel_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanSubscribeCancelRequest* msg);
+    wifi_error (*wifi_nan_transmit_followup_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanTransmitFollowupRequest* msg);
+    wifi_error (*wifi_nan_stats_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanStatsRequest* msg);
+    wifi_error (*wifi_nan_config_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanConfigRequest* msg);
+    wifi_error (*wifi_nan_tca_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanTCARequest* msg);
+    wifi_error (*wifi_nan_beacon_sdf_payload_request)(transaction_id id,
+        wifi_interface_handle iface,
+        NanBeaconSdfPayloadRequest* msg);
+    wifi_error (*wifi_nan_register_handler)(wifi_interface_handle iface,
+        NanCallbackHandler handlers);
+    wifi_error (*wifi_nan_get_version)(wifi_handle handle,
+        NanVersion* version);
+    wifi_error (*wifi_nan_get_capabilities)(transaction_id id,
+        wifi_interface_handle iface);
+    wifi_error (*wifi_nan_data_interface_create)(transaction_id id,
+                                                 wifi_interface_handle iface,
+                                                 char *iface_name);
+    wifi_error (*wifi_nan_data_interface_delete)(transaction_id id,
+                                                 wifi_interface_handle iface,
+                                                 char *iface_name);
+    wifi_error (*wifi_nan_data_request_initiator)(
+        transaction_id id, wifi_interface_handle iface,
+        NanDataPathInitiatorRequest *msg);
+    wifi_error (*wifi_nan_data_indication_response)(
+        transaction_id id, wifi_interface_handle iface,
+        NanDataPathIndicationResponse *msg);
+    wifi_error (*wifi_nan_data_end)(transaction_id id,
+                                    wifi_interface_handle iface,
+                                    NanDataPathEndRequest *msg);
+    wifi_error (*wifi_select_tx_power_scenario)(wifi_interface_handle iface,
+                                                wifi_power_scenario scenario);
+    wifi_error (*wifi_reset_tx_power_scenario)(wifi_interface_handle iface);
+
+    /**
+     * Returns the chipset's hardware filtering capabilities:
+     * @param version pointer to version of the packet filter interpreter
+     *                supported, filled in upon return. 0 indicates no support.
+     * @param max_len pointer to maximum size of the filter bytecode, filled in
+     *                upon return.
+     */
+    wifi_error (*wifi_get_packet_filter_capabilities)(wifi_interface_handle handle,
+                                                      u32 *version, u32 *max_len);
+    /**
+     * Programs the packet filter.
+     * @param program pointer to the program byte-code.
+     * @param len length of the program byte-code.
+     */
+    wifi_error (*wifi_set_packet_filter)(wifi_interface_handle handle,
+                                         const u8 *program, u32 len);
+    wifi_error (*wifi_read_packet_filter)(wifi_interface_handle handle,
+                                          u32 src_offset, u8 *host_dst,
+                                          u32 length);
+    wifi_error (*wifi_get_roaming_capabilities)(wifi_interface_handle handle,
+                                                wifi_roaming_capabilities *caps);
+    wifi_error (*wifi_enable_firmware_roaming)(wifi_interface_handle handle,
+                                               fw_roaming_state_t state);
+    wifi_error (*wifi_configure_roaming)(wifi_interface_handle handle,
+                                         wifi_roaming_config *roaming_config);
+    wifi_error (*wifi_set_radio_mode_change_handler)(wifi_request_id id, wifi_interface_handle
+                        iface, wifi_radio_mode_change_handler eh);
+    wifi_error (*wifi_set_latency_mode)(wifi_interface_handle iface,
+                                        wifi_latency_mode mode);
+    wifi_error (*wifi_set_thermal_mitigation_mode)(wifi_handle handle,
+                                                   wifi_thermal_mode mode,
+                                                   u32 completion_window);
+    wifi_error (*wifi_map_dscp_access_category)(wifi_handle handle,
+                                                u32 start, u32 end,
+                                                u32 access_category);
+    wifi_error (*wifi_reset_dscp_mapping)(wifi_handle handle);
+
+    wifi_error (*wifi_virtual_interface_create)(wifi_handle handle, const char* ifname,
+                                                wifi_interface_type iface_type);
+    wifi_error (*wifi_virtual_interface_delete)(wifi_handle handle, const char* ifname);
+
+    wifi_error (*wifi_set_subsystem_restart_handler)(wifi_handle handle,
+                                                     wifi_subsystem_restart_handler handler);
+
+    /**
+      * Allow vendor HAL to choose interface name when creating
+      * an interface. This can be implemented by chips with their
+      * own interface naming policy.
+      * If not implemented, the default naming will be used.
+      */
+    wifi_error (*wifi_get_supported_iface_name)(wifi_handle handle, u32 iface_type,
+                                                char *name, size_t len);
+
+    /**
+     * Perform early initialization steps that are needed when WIFI
+     * is disabled.
+     * If the function returns failure, it means the vendor HAL is unusable
+     * (for example, if chip hardware is not installed) and no further
+     * functions should be called.
+     */
+    wifi_error (*wifi_early_initialize)(void);
+
+    /**
+     * Get supported feature set which are chip-global, that is
+     * not dependent on any created interface.
+     */
+    wifi_error (*wifi_get_chip_feature_set)(wifi_handle handle, feature_set *set);
+
+    /**
+     * Invoked to indicate that the provided iface is the primary STA iface when there are more
+     * than 1 STA iface concurrently active.
+     */
+    wifi_error (*wifi_multi_sta_set_primary_connection)(wifi_handle handle,
+                                                        wifi_interface_handle iface);
+
+
+    /**
+     * When there are 2 simultaneous STA connections, this use case hint
+     * indicates what STA + STA use-case is being enabled by the framework.
+     */
+    wifi_error (*wifi_multi_sta_set_use_case)(wifi_handle handle,
+                                              wifi_multi_sta_use_case use_case);
+
+    /**
+     * Invoked to indicate that the following list of wifi_coex_unsafe_channel should be avoided
+     * with the specified restrictions.
+     * @param unsafeChannels list of current |wifi_coex_unsafe_channel| to avoid.
+     * @param restrictions bitmask of |wifi_coex_restriction| indicating wifi interfaces to
+     *         restrict from the current unsafe channels.
+     */
+    wifi_error (*wifi_set_coex_unsafe_channels)(wifi_handle handle, u32 num_channels,
+                                                wifi_coex_unsafe_channel *unsafeChannels,
+                                                u32 restrictions);
+
+    /**
+     * Invoked to set voip optimization mode for the provided STA iface
+     */
+    wifi_error (*wifi_set_voip_mode)(wifi_interface_handle iface, wifi_voip_mode mode);
+
+    /**
+     * Get Target Wake Time (TWT) local device capabilities for the station interface.
+     *
+     * @param iface Wifi interface handle
+     * @param capabilities TWT capabilities
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_twt_get_capabilities)(wifi_interface_handle iface,
+                                            wifi_twt_capabilities* capabilities);
+    /**
+     * Setup a TWT session.
+     *
+     * Supported only if wifi_twt_capabilities.is_twt_requester_supported is set. Results in
+     * asynchronous callback wifi_twt_events.on_twt_session_create on success or
+     * wifi_twt_events.on_twt_failure with error code.
+     *
+     * @param id Identifier for the command. The value 0 is reserved.
+     * @param iface Wifi interface handle
+     * @param request TWT request parameters
+     * @param events TWT events
+     * @return Synchronous wifi_error
+    */
+    wifi_error (*wifi_twt_session_setup)(wifi_request_id id, wifi_interface_handle iface,
+                                 wifi_twt_request request, wifi_twt_events events);
+    /**
+     * Update a TWT session.
+     *
+     * Supported only if wifi_twt_session.is_updatable is set. Reesults in asynchronous callback
+     * wifi_twt_events.on_twt_session_update on success or wifi_twt_events.on_twt_failure with
+     * error code.
+     *
+     * @param id Identifier for the command. The value 0 is reserved.
+     * @param iface Wifi interface handle
+     * @param session_id TWT session identifier
+     * @param request TWT request parameters
+     * @return Synchronous wifi_error
+    */
+    wifi_error (*wifi_twt_session_update)(wifi_request_id id, wifi_interface_handle iface,
+                                  int session_id, wifi_twt_request request);
+    /**
+     * Suspend a TWT session.
+     * Supported only if wifi_twt_session.is_suspendable is set. Results in asynchronous callback
+     * wifi_twt_events.on_twt_session_suspend on success or wifi_twt_events.on_twt_failure with
+     * error code.
+     *
+     * @param id Identifier for the command. The value 0 is reserved.
+     * @param iface Wifi interface handle
+     * @param session_id TWT session identifier
+     * @return Synchronous wifi_error
+    */
+    wifi_error (*wifi_twt_session_suspend)(wifi_request_id id, wifi_interface_handle iface,
+                                   int session_id);
+    /**
+     * Resume a suspended TWT session.
+     *
+     * Supported only if wifi_twt_session.is_suspendable is set. Results in asynchronous callback
+     * wifi_twt_events.on_twt_session_resume on success or wifi_twt_events.on_twt_failure with
+     * error code.
+     *
+     * @param id Identifier for the command. The value 0 is reserved.
+     * @param iface Wifi interface handle
+     * @param session_id TWT session identifier
+     * @return Synchronous wifi_error
+    */
+    wifi_error (*wifi_twt_session_resume)(wifi_request_id id, wifi_interface_handle iface,
+                                  int session_id);
+    /**
+     * Teardown a TWT session.
+     *
+     * Results in asynchronous callback  wifi_twt_events.on_twt_session_teardown on success or
+     * wifi_twt_events.on_twt_failure with error code.
+     *
+     * @param id Identifier for the command. The value 0 is reserved.
+     * @param iface Wifi interface handle
+     * @param session_id TWT session identifier
+     * @return Synchronous wifi_error
+    */
+    wifi_error (*wifi_twt_session_teardown)(wifi_request_id id, wifi_interface_handle iface,
+                                  int session_id);
+
+    /**
+     * Get stats for a TWT session.
+     *
+     * Results in asynchronous callback  wifi_twt_events.on_twt_session_stats on success or
+     * wifi_twt_events.on_twt_failure with error code.
+     *
+     * @param id Identifier for the command. The value 0 is reserved.
+     * @param iface Wifi interface handle
+     * @param session_id TWT session identifier
+     * @return Synchronous wifi_error
+    */
+    wifi_error (*wifi_twt_session_get_stats)(wifi_request_id id, wifi_interface_handle iface,
+                                             int session_id);
+
+    /**@brief twt_register_handler
+     *        Request to register TWT callback before sending any TWT request
+     * @param wifi_interface_handle:
+     * @param TwtCallbackHandler: callback function pointers
+     * @return Synchronous wifi_error
+     *
+     * Note: This function is deprecated
+     */
+    wifi_error (*wifi_twt_register_handler)(wifi_interface_handle iface,
+                                            TwtCallbackHandler handler);
+
+    /**@brief twt_get_capability
+     *        Request TWT capability
+     * @param wifi_interface_handle:
+     * @return Synchronous wifi_error and TwtCapabilitySet
+     *
+     * Note: This function is deprecated by wifi_twt_get_capabilities
+     */
+    wifi_error (*wifi_twt_get_capability)(wifi_interface_handle iface,
+                                          TwtCapabilitySet* twt_cap_set);
+
+    /**@brief twt_setup_request
+     *        Request to send TWT setup frame
+     * @param wifi_interface_handle:
+     * @param TwtSetupRequest: detailed parameters of setup request
+     * @return Synchronous wifi_error
+     * @return Asynchronous EventTwtSetupResponse CB return TwtSetupResponse
+     *
+     * Note: This function is deprecated by wifi_twt_session_setup
+     */
+    wifi_error (*wifi_twt_setup_request)(wifi_interface_handle iface,
+                                         TwtSetupRequest* msg);
+
+    /**@brief twt_teardown_request
+     *        Request to send TWT teardown frame
+     * @param wifi_interface_handle:
+     * @param TwtTeardownRequest: detailed parameters of teardown request
+     * @return Synchronous wifi_error
+     * @return Asynchronous EventTwtTeardownCompletion CB return TwtTeardownCompletion
+     * TwtTeardownCompletion may also be received due to other events
+     * like CSA, BTCX, TWT scheduler, MultiConnection, peer-initiated teardown, etc.
+     *
+     * Note: This function is deprecated by wifi_twt_session_teardown
+     */
+    wifi_error (*wifi_twt_teardown_request)(wifi_interface_handle iface,
+                                            TwtTeardownRequest* msg);
+
+    /**@brief twt_info_frame_request
+     *        Request to send TWT info frame
+     * @param wifi_interface_handle:
+     * @param TwtInfoFrameRequest: detailed parameters in info frame
+     * @return Synchronous wifi_error
+     * @return Asynchronous EventTwtInfoFrameReceived CB return TwtInfoFrameReceived
+     * Driver may also receive Peer-initiated TwtInfoFrame
+     *
+     * Note: This function is deprecated by wifi_twt_session_suspend and
+     * wifi_twt_session_resume
+     */
+    wifi_error (*wifi_twt_info_frame_request)(wifi_interface_handle iface,
+                                              TwtInfoFrameRequest* msg);
+
+    /**@brief twt_get_stats
+     *        Request to get TWT stats
+     * @param wifi_interface_handle:
+     * @param config_id: configuration ID of TWT request
+     * @return Synchronous wifi_error and TwtStats
+     *
+     * Note: This function is deprecated by wifi_twt_get_session_stats
+     */
+    wifi_error (*wifi_twt_get_stats)(wifi_interface_handle iface, u8 config_id,
+                                     TwtStats* stats);
+
+    /**@brief twt_clear_stats
+     *        Request to clear TWT stats
+     * @param wifi_interface_handle:
+     * @param config_id: configuration ID of TWT request
+     * @return Synchronous wifi_error
+     *
+     * Note: This function is deprecated by wifi_twt_session_clear_stats
+     */
+    wifi_error (*wifi_twt_clear_stats)(wifi_interface_handle iface, u8 config_id);
+
+    /**
+     * Invoked to set DTIM configuration when the host is in the suspend mode
+     * @param wifi_interface_handle:
+     * @param multiplier: when STA in the power saving mode, the wake up interval will be set to
+     *              1) multiplier * DTIM period if multiplier > 0.
+     *              2) the device default value if multiplier <=0
+     * Some implementations may apply an additional cap to wake up interval in the case of 1).
+     */
+    wifi_error (*wifi_set_dtim_config)(wifi_interface_handle handle, u32 multiplier);
+
+    /**@brief wifi_get_usable_channels
+     *        Request list of usable channels for the requested bands and modes. Usable
+     *        implies channel is allowed as per regulatory for the current country code
+     *        and not restricted due to other hard limitations (e.g. DFS, Coex) In
+     *        certain modes (e.g. STA+SAP) there could be other hard restrictions
+     *        since MCC operation many not be supported by SAP. This API also allows
+     *        driver to return list of usable channels for each mode uniquely to
+     *        distinguish cases where only a limited set of modes are allowed on
+     *        a given channel e.g. srd channels may be supported for P2P but not
+     *        for SAP or P2P-Client may be allowed on an indoor channel but P2P-GO
+     *        may not be allowed. This API is not interface specific and will be
+     *        used to query capabilities of driver in terms of what modes (STA, SAP,
+     *        P2P_CLI, P2P_GO, NAN, TDLS) can be supported on each of the channels.
+     * @param handle global wifi_handle
+     * @param band_mask BIT MASK of WLAN_MAC* as represented by |wlan_mac_band|
+     * @param iface_mode_mask BIT MASK of BIT(WIFI_INTERFACE_*) represented by
+     *        |wifi_interface_mode|. Bitmask respresents all the modes that the
+     *        caller is interested in (e.g. STA, SAP, WFD-CLI, WFD-GO, TDLS, NAN).
+     *        Note: Bitmask does not represent concurrency matrix. If the caller
+     *        is interested in CLI, GO modes, the iface_mode_mask would be set
+     *        to WIFI_INTERFACE_P2P_CLIENT|WIFI_INTERFACE_P2P_GO.
+     * @param filter_mask BIT MASK of WIFI_USABLE_CHANNEL_FILTER_* represented by
+     *        |wifi_usable_channel_filter|. Indicates if the channel list should
+     *        be filtered based on additional criteria. If filter_mask is not
+     *        specified, driver should return list of usable channels purely
+     *        based on regulatory constraints.
+     * @param max_size maximum number of |wifi_usable_channel|
+     * @param size actual number of |wifi_usable_channel| entries returned by driver
+     * @param channels list of usable channels represented by |wifi_usable_channel|
+     */
+    wifi_error (*wifi_get_usable_channels)(wifi_handle handle, u32 band_mask, u32 iface_mode_mask,
+                                           u32 filter_mask, u32 max_size, u32* size,
+                                           wifi_usable_channel* channels);
+
+    /**
+     * Trigger wifi subsystem restart to reload firmware
+     */
+    wifi_error (*wifi_trigger_subsystem_restart)(wifi_handle handle);
+
+    /**
+     * Invoked to set that the device is operating in an indoor environment.
+     * @param handle global wifi_handle
+     * @param isIndoor: true if the device is operating in an indoor
+     *        environment, false otherwise.
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_set_indoor_state)(wifi_handle handle, bool isIndoor);
+
+    /**@brief wifi_get_supported_radio_combinations_matrix
+     *        Request all the possible radio combinations this device can offer.
+     * @param handle global wifi_handle
+     * @param max_size maximum size allocated for filling the wifi_radio_combination_matrix
+     * @param wifi_radio_combination_matrix to return all the possible radio
+     *        combinations.
+     * @param size actual size of wifi_radio_combination_matrix returned from
+     *        lower layer
+     *
+     */
+    wifi_error (*wifi_get_supported_radio_combinations_matrix)(
+        wifi_handle handle, u32 max_size, u32 *size,
+        wifi_radio_combination_matrix *radio_combination_matrix);
+
+    /**@brief wifi_nan_rtt_chre_enable_request
+     *        Request to enable CHRE NAN RTT
+     * @param transaction_id: NAN transaction id
+     * @param wifi_interface_handle
+     * @param NanEnableRequest request message
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_nan_rtt_chre_enable_request)(transaction_id id,
+                                                   wifi_interface_handle iface,
+                                                   NanEnableRequest* msg);
+
+    /**@brief wifi_nan_rtt_chre_disable_request
+     *        Request to disable CHRE NAN RTT
+     * @param transaction_id: NAN transaction id
+     * @param wifi_interface_handle
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_nan_rtt_chre_disable_request)(transaction_id id, wifi_interface_handle iface);
+
+    /**@brief wifi_chre_register_handler
+     *        register a handler to get the state of CHR
+     * @param wifi_interface_handle
+     * @param wifi_chre_handler: callback function pointer
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_chre_register_handler)(wifi_interface_handle iface,
+                                             wifi_chre_handler handler);
+
+    /**@brief wifi_enable_tx_power_limits
+     *        Enable WiFi Tx power limis
+     * @param wifi_interface_handle
+     * @param isEnable : If enable TX limit or not
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_enable_tx_power_limits) (wifi_interface_handle iface,
+                                               bool isEnable);
+
+    /**@brief wifi_get_cached_scan_results
+     *        Retrieve scan results cached in wifi firmware
+     * @param wifi_interface_handle
+     * @param wifi_cached_scan_result_handler : callback function pointer
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_get_cached_scan_results)(wifi_interface_handle iface,
+                                               wifi_cached_scan_result_handler handler);
+    /**@brief wifi_get_chip_capabilities
+     *        Retrieve capabilities supported by this chip
+     * @param wifi_handle
+     * @return Synchronous wifi_error and chip capabilites
+     */
+    wifi_error (*wifi_get_chip_capabilities)(wifi_handle handle,
+                                             wifi_chip_capabilities *chip_capabilities);
+
+    /**@brief wifi_get_supported_iface_concurrency_matrix
+     *        Request all the possible interface concurrency combinations this
+     *        Wifi Chip can offer.
+     * @param handle global wifi_handle
+     * @param wifi_iface_concurrency_matrix to return all the possible
+     *        interface concurrency combinations.
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_get_supported_iface_concurrency_matrix)(
+        wifi_handle handle, wifi_iface_concurrency_matrix *matrix);
+
+    /**@brief wifi_enable_sta_channel_for_peer_network
+     *        enable or disable the feature of allowing current STA-connected
+     *        channel for WFA GO, SAP and Wi-Fi Aware when the regulatory allows.
+     * @param handle global wifi_handle
+     * @param channelCategoryEnableFlag bitmask of |wifi_channel_category|.
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_enable_sta_channel_for_peer_network)(
+        wifi_handle handle, u32 channelCategoryEnableFlag);
+
+    /**@brief wifi_nan_suspend_request
+     * Request that the specified NAN session be suspended.
+     * @param transaction_id: NAN transaction id
+     * @param wifi_interface_handle
+     * @param NanSuspendRequest request message
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_nan_suspend_request)(transaction_id id, wifi_interface_handle iface,
+                                                   NanSuspendRequest *msg);
+
+    /**@brief wifi_nan_resume_request
+     * Request that the specified NAN session be resumed.
+     * @param transaction_id: NAN transaction id
+     * @param wifi_interface_handle
+     * @param NanResumeRequest request message
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_nan_resume_request)(transaction_id id, wifi_interface_handle iface,
+                                                   NanResumeRequest *msg);
+
+    wifi_error (*wifi_nan_pairing_request)(
+        transaction_id id, wifi_interface_handle iface,
+        NanPairingRequest *msg);
+    wifi_error (*wifi_nan_pairing_indication_response)(
+    transaction_id id, wifi_interface_handle iface,
+        NanPairingIndicationResponse *msg);
+    wifi_error (*wifi_nan_bootstrapping_request)(
+        transaction_id id, wifi_interface_handle iface,
+        NanBootstrappingRequest *msg);
+    wifi_error (*wifi_nan_bootstrapping_indication_response)(
+        transaction_id id, wifi_interface_handle iface,
+        NanBootstrappingIndicationResponse *msg);
+
+    /**@brief wifi_set_scan_mode
+     *        Notify driver/firmware current is scan only mode to allow lower
+     *        level to optimize power consumption.
+     * @param enable true if current is scan only mode
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_set_scan_mode)(const char * ifname, bool enable);
+
+    wifi_error (*wifi_nan_pairing_end)(transaction_id id,
+                                    wifi_interface_handle iface,
+                                    NanPairingEndRequest *msg);
+
+    /**@brief wifi_set_mlo_mode
+     * Set Multi-Link Operation mode.
+     * @param handle global wifi_handle
+     * @param mode: MLO mode
+     * @return Synchronous wifi_error
+     */
+    wifi_error (*wifi_set_mlo_mode)(wifi_handle handle, wifi_mlo_mode mode);
+
+    /*
+     * when adding new functions make sure to add stubs in
+     * wifi_legacy_hal_stubs.cpp::initHalFuncTableWithStubs
+     */
+} wifi_hal_fn;
+
+wifi_error init_wifi_vendor_hal_func_table(wifi_hal_fn *fn);
+typedef wifi_error (*init_wifi_vendor_hal_func_table_t)(wifi_hal_fn *fn);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/wifi/legacy_headers/include/hardware_legacy/wifi_logger.h b/wifi/legacy_headers/include/hardware_legacy/wifi_logger.h
new file mode 100644
index 0000000..0692859
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/wifi_logger.h
@@ -0,0 +1,646 @@
+#include "wifi_hal.h"
+
+#ifndef __WIFI_HAL_LOGGER_H
+#define __WIFI_HAL_LOGGER_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#define LOGGER_MAJOR_VERSION    1
+#define LOGGER_MINOR_VERSION    0
+#define LOGGER_MICRO_VERSION    0
+
+
+
+/**
+ * WiFi logger life cycle is as follow:
+ *
+ * - At initialization time, framework will call wifi_get_ring_buffers_status
+ *   so as to obtain the names and list of supported buffers.
+ * - When WiFi operation start framework will call wifi_start_logging
+ *   so as to trigger log collection.
+ * - Developper UI will provide an option to the user, so as it can set the verbose level
+ *   of individual buffer as reported by wifi_get_ring_buffers_status.
+ * - During wifi operations, driver will periodically report per ring data to framework
+ *   by invoking the on_ring_buffer_data call back.
+ * - when capturing a bug report, framework will indicate to driver that all the data
+ *   has to be uploaded, urgently, by calling wifi_get_ring_data.
+ *
+ * The data uploaded by driver will be stored by framework in separate files, with one stream
+ *   of file per ring.
+ * Framework will store the files in pcapng format, allowing for easy merging and parsing
+ *   with network analyzer tools.
+ */
+
+
+typedef int wifi_ring_buffer_id;
+
+#define PER_PACKET_ENTRY_FLAGS_DIRECTION_TX  1    // 0: TX, 1: RX
+#define PER_PACKET_ENTRY_FLAGS_TX_SUCCESS    2    // whether packet was transmitted or
+                                                  // received/decrypted successfully
+#define PER_PACKET_ENTRY_FLAGS_80211_HEADER  4    // has full 802.11 header, else has 802.3 header
+#define PER_PACKET_ENTRY_FLAGS_PROTECTED     8    // whether packet was encrypted
+
+typedef struct {
+    u8 flags;
+    u8 tid;     // transmit or received tid
+    u16 MCS;    // modulation and bandwidth
+    u8 rssi;    // TX: RSSI of ACK for that packet
+                // RX: RSSI of packet
+    u8 num_retries;                   // number of attempted retries
+    u16 last_transmit_rate;           // last transmit rate in .5 mbps
+    u16 link_layer_transmit_sequence; // transmit/reeive sequence for that MPDU packet
+    u64 firmware_entry_timestamp;     // TX: firmware timestamp (us) when packet is queued within
+                                      // firmware buffer for SDIO/HSIC or into PCIe buffer
+                                      // RX: firmware receive timestamp
+    u64 start_contention_timestamp; // firmware timestamp (us) when packet start contending for the
+                                    // medium for the first time, at head of its AC queue,
+                                    // or as part of an MPDU or A-MPDU. This timestamp is
+                                    // not updated for each retry, only the first transmit attempt.
+    u64 transmit_success_timestamp; // fimrware timestamp (us) when packet is successfully
+                                    // transmitted or aborted because it has exhausted
+                                    // its maximum number of retries.
+    u8 data[0]; // packet data. The length of packet data is determined by the entry_size field of
+                // the wifi_ring_buffer_entry structure. It is expected that first bytes of the
+                // packet, or packet headers only (up to TCP or RTP/UDP headers)
+                // will be copied into the ring
+} __attribute__((packed)) wifi_ring_per_packet_status_entry;
+
+
+/* Below events refer to the wifi_connectivity_event ring and shall be supported */
+#define WIFI_EVENT_ASSOCIATION_REQUESTED    0  // driver receives association command from kernel
+#define WIFI_EVENT_AUTH_COMPLETE            1
+#define WIFI_EVENT_ASSOC_COMPLETE           2
+#define WIFI_EVENT_FW_AUTH_STARTED          3  // fw event indicating auth frames are sent
+#define WIFI_EVENT_FW_ASSOC_STARTED         4  // fw event indicating assoc frames are sent
+#define WIFI_EVENT_FW_RE_ASSOC_STARTED      5  // fw event indicating reassoc frames are sent
+#define WIFI_EVENT_DRIVER_SCAN_REQUESTED    6
+#define WIFI_EVENT_DRIVER_SCAN_RESULT_FOUND 7
+#define WIFI_EVENT_DRIVER_SCAN_COMPLETE     8
+#define WIFI_EVENT_G_SCAN_STARTED           9
+#define WIFI_EVENT_G_SCAN_COMPLETE          10
+#define WIFI_EVENT_DISASSOCIATION_REQUESTED 11
+#define WIFI_EVENT_RE_ASSOCIATION_REQUESTED 12
+#define WIFI_EVENT_ROAM_REQUESTED           13
+#define WIFI_EVENT_BEACON_RECEIVED          14  // received beacon from AP (event enabled
+                                                // only in verbose mode)
+#define WIFI_EVENT_ROAM_SCAN_STARTED        15  // firmware has triggered a roam scan (not g-scan)
+#define WIFI_EVENT_ROAM_SCAN_COMPLETE       16  // firmware has completed a roam scan (not g-scan)
+#define WIFI_EVENT_ROAM_SEARCH_STARTED      17  // firmware has started searching for roam
+                                                // candidates (with reason =xx)
+#define WIFI_EVENT_ROAM_SEARCH_STOPPED      18  // firmware has stopped searching for roam
+                                                // candidates (with reason =xx)
+#define WIFI_EVENT_CHANNEL_SWITCH_ANOUNCEMENT     20 // received channel switch anouncement from AP
+#define WIFI_EVENT_FW_EAPOL_FRAME_TRANSMIT_START  21 // fw start transmit eapol frame, with
+                                                     // EAPOL index 1-4
+#define WIFI_EVENT_FW_EAPOL_FRAME_TRANSMIT_STOP   22 // fw gives up eapol frame, with rate,
+                                                     // success/failure and number retries
+#define WIFI_EVENT_DRIVER_EAPOL_FRAME_TRANSMIT_REQUESTED 23 // kernel queue EAPOL for transmission
+                                                            // in driver with EAPOL index 1-4
+#define WIFI_EVENT_FW_EAPOL_FRAME_RECEIVED        24 // with rate, regardless of the fact that
+                                                     // EAPOL frame is accepted or rejected by fw
+#define WIFI_EVENT_DRIVER_EAPOL_FRAME_RECEIVED    26 // with rate, and eapol index, driver has
+                                                     // received EAPOL frame and will queue it up
+                                                     // to wpa_supplicant
+#define WIFI_EVENT_BLOCK_ACK_NEGOTIATION_COMPLETE 27 // with success/failure, parameters
+#define WIFI_EVENT_BT_COEX_BT_SCO_START     28
+#define WIFI_EVENT_BT_COEX_BT_SCO_STOP      29
+#define WIFI_EVENT_BT_COEX_BT_SCAN_START    30  // for paging/scan etc., when BT starts transmiting
+                                                // twice per BT slot
+#define WIFI_EVENT_BT_COEX_BT_SCAN_STOP     31
+#define WIFI_EVENT_BT_COEX_BT_HID_START     32
+#define WIFI_EVENT_BT_COEX_BT_HID_STOP      33
+#define WIFI_EVENT_ROAM_AUTH_STARTED        34  // fw sends auth frame in roaming to next candidate
+#define WIFI_EVENT_ROAM_AUTH_COMPLETE       35  // fw receive auth confirm from ap
+#define WIFI_EVENT_ROAM_ASSOC_STARTED       36  // firmware sends assoc/reassoc frame in
+                                                // roaming to next candidate
+#define WIFI_EVENT_ROAM_ASSOC_COMPLETE      37  // firmware receive assoc/reassoc confirm from ap
+#define WIFI_EVENT_G_SCAN_STOP              38  // firmware sends stop G_SCAN
+#define WIFI_EVENT_G_SCAN_CYCLE_STARTED     39  // firmware indicates G_SCAN scan cycle started
+#define WIFI_EVENT_G_SCAN_CYCLE_COMPLETED   40  // firmware indicates G_SCAN scan cycle completed
+#define WIFI_EVENT_G_SCAN_BUCKET_STARTED    41  // firmware indicates G_SCAN scan start
+                                                // for a particular bucket
+#define WIFI_EVENT_G_SCAN_BUCKET_COMPLETED  42  // firmware indicates G_SCAN scan completed for
+                                                // for a particular bucket
+#define WIFI_EVENT_G_SCAN_RESULTS_AVAILABLE 43  // Event received from firmware about G_SCAN scan
+                                                // results being available
+#define WIFI_EVENT_G_SCAN_CAPABILITIES      44  // Event received from firmware with G_SCAN
+                                                // capabilities
+#define WIFI_EVENT_ROAM_CANDIDATE_FOUND     45  // Event received from firmware when eligible
+                                                // candidate is found
+#define WIFI_EVENT_ROAM_SCAN_CONFIG         46  // Event received from firmware when roam scan
+                                                // configuration gets enabled or disabled
+#define WIFI_EVENT_AUTH_TIMEOUT             47  // firmware/driver timed out authentication
+#define WIFI_EVENT_ASSOC_TIMEOUT            48  // firmware/driver timed out association
+#define WIFI_EVENT_MEM_ALLOC_FAILURE        49  // firmware/driver encountered allocation failure
+#define WIFI_EVENT_DRIVER_PNO_ADD           50  // driver added a PNO network in firmware
+#define WIFI_EVENT_DRIVER_PNO_REMOVE        51  // driver removed a PNO network in firmware
+#define WIFI_EVENT_DRIVER_PNO_NETWORK_FOUND 52  // driver received PNO networks
+                                                // found indication from firmware
+#define WIFI_EVENT_DRIVER_PNO_SCAN_REQUESTED 53  // driver triggered a scan for PNO networks
+#define WIFI_EVENT_DRIVER_PNO_SCAN_RESULT_FOUND 54  // driver received scan results
+                                                    // of PNO networks
+#define WIFI_EVENT_DRIVER_PNO_SCAN_COMPLETE 55  // driver updated scan results from
+                                                // PNO networks to cfg80211
+
+/**
+ * Parameters of wifi logger events are TLVs
+ * Event parameters tags are defined as:
+ */
+#define WIFI_TAG_VENDOR_SPECIFIC    0   // take a byte stream as parameter
+#define WIFI_TAG_BSSID              1   // takes a 6 bytes MAC address as parameter
+#define WIFI_TAG_ADDR               2   // takes a 6 bytes MAC address as parameter
+#define WIFI_TAG_SSID               3   // takes a 32 bytes SSID address as parameter
+#define WIFI_TAG_STATUS             4   // takes an integer as parameter
+#define WIFI_TAG_CHANNEL_SPEC       5   // takes one or more wifi_channel_spec as parameter
+#define WIFI_TAG_WAKE_LOCK_EVENT    6   // takes a wake_lock_event struct as parameter
+#define WIFI_TAG_ADDR1              7   // takes a 6 bytes MAC address as parameter
+#define WIFI_TAG_ADDR2              8   // takes a 6 bytes MAC address as parameter
+#define WIFI_TAG_ADDR3              9   // takes a 6 bytes MAC address as parameter
+#define WIFI_TAG_ADDR4              10  // takes a 6 bytes MAC address as parameter
+#define WIFI_TAG_TSF                11  // take a 64 bits TSF value as parameter
+#define WIFI_TAG_IE                 12  // take one or more specific 802.11 IEs parameter,
+                                        // IEs are in turn indicated in TLV format as per
+                                        // 802.11 spec
+#define WIFI_TAG_INTERFACE          13  // take interface name as parameter
+#define WIFI_TAG_REASON_CODE        14  // take a reason code as per 802.11 as parameter
+#define WIFI_TAG_RATE_MBPS          15  // take a wifi rate in 0.5 mbps
+#define WIFI_TAG_REQUEST_ID         16  // take an integer as parameter
+#define WIFI_TAG_BUCKET_ID          17  // take an integer as parameter
+#define WIFI_TAG_GSCAN_PARAMS       18  // takes a wifi_scan_cmd_params struct as parameter
+#define WIFI_TAG_GSCAN_CAPABILITIES 19  // takes a wifi_gscan_capabilities struct as parameter
+#define WIFI_TAG_SCAN_ID            20  // take an integer as parameter
+#define WIFI_TAG_RSSI               21  // take an integer as parameter
+#define WIFI_TAG_CHANNEL            22  // take an integer as parameter
+#define WIFI_TAG_LINK_ID            23  // take an integer as parameter
+#define WIFI_TAG_LINK_ROLE          24  // take an integer as parameter
+#define WIFI_TAG_LINK_STATE         25  // take an integer as parameter
+#define WIFI_TAG_LINK_TYPE          26  // take an integer as parameter
+#define WIFI_TAG_TSCO               27  // take an integer as parameter
+#define WIFI_TAG_RSCO               28  // take an integer as parameter
+#define WIFI_TAG_EAPOL_MESSAGE_TYPE 29  // take an integer as parameter
+                                        // M1-1, M2-2, M3-3, M4-4
+
+typedef struct {
+    u16 tag;
+    u16 length; // length of value
+    u8 value[0];
+} __attribute__((packed)) tlv_log;
+
+typedef struct {
+    u16 event;
+    tlv_log tlvs[0];   // separate parameter structure per event to be provided and optional data
+                       // the event_data is expected to include an official android part, with some
+                       // parameter as transmit rate, num retries, num scan result found etc...
+                       // as well, event_data can include a vendor proprietary part which is
+                       // understood by the developer only.
+} __attribute__((packed)) wifi_ring_buffer_driver_connectivity_event;
+
+
+/**
+ * Ring buffer name for power events ring. note that power event are extremely frequents
+ * and thus should be stored in their own ring/file so as not to clobber connectivity events.
+ */
+typedef struct {
+    int status;      // 0 taken, 1 released
+    int reason;      // reason why this wake lock is taken
+    char name[0];    // null terminated
+} __attribute__((packed)) wake_lock_event;
+
+typedef struct {
+    u16 event;
+    tlv_log tlvs[0];
+} __attribute__((packed)) wifi_power_event;
+
+
+/**
+ * This structure represent a logger entry within a ring buffer.
+ * Wifi driver are responsible to manage the ring buffer and write the debug
+ * information into those rings.
+ *
+ * In general, the debug entries can be used to store meaningful 802.11 information (SME, MLME,
+ * connection and packet statistics) as well as vendor proprietary data that is specific to a
+ * specific driver or chipset.
+ * Binary entries can be used so as to store packet data or vendor specific information and
+ * will be treated as blobs of data by android.
+ *
+ * A user land process will be started by framework so as to periodically retrieve the
+ * data logged by drivers into their ring buffer, store the data into log files and include
+ * the logs into android bugreports.
+ */
+enum {
+    RING_BUFFER_ENTRY_FLAGS_HAS_BINARY = (1 << (0)),    // set for binary entries
+    RING_BUFFER_ENTRY_FLAGS_HAS_TIMESTAMP = (1 << (1))  // set if 64 bits timestamp is present
+};
+
+enum {
+    ENTRY_TYPE_CONNECT_EVENT = 1,
+    ENTRY_TYPE_PKT,
+    ENTRY_TYPE_WAKE_LOCK,
+    ENTRY_TYPE_POWER_EVENT,
+    ENTRY_TYPE_DATA
+};
+
+typedef struct {
+    u16 entry_size; // the size of payload excluding the header.
+    u8 flags;
+    u8 type;        // entry type
+    u64 timestamp;  // present if has_timestamp bit is set.
+} __attribute__((packed)) wifi_ring_buffer_entry;
+
+#define WIFI_RING_BUFFER_FLAG_HAS_BINARY_ENTRIES 0x00000001   // set if binary entries are present
+#define WIFI_RING_BUFFER_FLAG_HAS_ASCII_ENTRIES  0x00000002   // set if ascii entries are present
+
+
+/* ring buffer params */
+/**
+ * written_bytes and read_bytes implement a producer consumer API
+ *     hence written_bytes >= read_bytes
+ * a modulo arithmetic of the buffer size has to be applied to those counters:
+ * actual offset into ring buffer = written_bytes % ring_buffer_byte_size
+ *
+ */
+typedef struct {
+    u8 name[32];
+    u32 flags;
+    wifi_ring_buffer_id ring_id; // unique integer representing the ring
+    u32 ring_buffer_byte_size;   // total memory size allocated for the buffer
+    u32 verbose_level;           // verbose level for ring buffer
+    u32 written_bytes;           // number of bytes that was written to the buffer by driver,
+                                 // monotonously increasing integer
+    u32 read_bytes;              // number of bytes that was read from the buffer by user land,
+                                 // monotonously increasing integer
+    u32 written_records;         // number of records that was written to the buffer by driver,
+                                 // monotonously increasing integer
+} wifi_ring_buffer_status;
+
+
+/**
+ * Callback for reporting ring data
+ *
+ * The ring buffer data collection is event based:
+ *   - Driver calls on_ring_buffer_data when new records are available, the wifi_ring_buffer_status
+ *     passed up to framework in the call back indicates to framework if more data is available in
+ *     the ring buffer. It is not expected that driver will necessarily always empty the ring
+ *     immediately as data is available, instead driver will report data every X seconds or if
+ *     N bytes are available.
+ *   - In the case where a bug report has to be captured, framework will require driver to upload
+ *     all data immediately. This is indicated to driver when framework calls wifi_get_ringdata.
+ *     When framework calls wifi_get_ring_data, driver will start sending all available data in the
+ *     indicated ring by repeatedly invoking the on_ring_buffer_data callback.
+ *
+ * The callback is called by log handler whenever ring data comes in driver.
+ */
+typedef struct {
+  void (*on_ring_buffer_data) (char *ring_name, char *buffer, int buffer_size,
+        wifi_ring_buffer_status *status);
+} wifi_ring_buffer_data_handler;
+
+/**
+ * API to set the log handler for getting ring data
+ *  - Only a single instance of log handler can be instantiated for each ring buffer.
+ */
+wifi_error wifi_set_log_handler(wifi_request_id id, wifi_interface_handle iface,
+    wifi_ring_buffer_data_handler handler);
+
+/* API to reset the log handler */
+wifi_error wifi_reset_log_handler(wifi_request_id id, wifi_interface_handle iface);
+
+
+/**
+ * Callback for reporting FW dump
+ *
+ * The buffer data collection is event based such as FW health check or FW dump.
+ * The callback is called by alert handler.
+ */
+typedef struct {
+   void (*on_alert) (wifi_request_id id, char *buffer, int buffer_size, int err_code);
+} wifi_alert_handler;
+
+/*
+ * API to set the alert handler for the alert case in Wi-Fi Chip
+ *  - Only a single instance of alert handler can be instantiated.
+ */
+wifi_error wifi_set_alert_handler(wifi_request_id id, wifi_interface_handle iface,
+    wifi_alert_handler handler);
+
+/* API to reset the alert handler */
+wifi_error wifi_reset_alert_handler(wifi_request_id id, wifi_interface_handle iface);
+
+/* API for framework to indicate driver has to upload and drain all data of a given ring */
+wifi_error wifi_get_ring_data(wifi_interface_handle iface, char *ring_name);
+
+
+/**
+ * API to trigger the debug collection.
+ *  Unless his API is invoked - logging is not triggered.
+ *  - Verbose_level 0 corresponds to no collection,
+ *    and it makes log handler stop by no more events from driver.
+ *  - Verbose_level 1 correspond to normal log level, with minimal user impact.
+ *    This is the default value.
+ *  - Verbose_level 2 are enabled when user is lazily trying to reproduce a problem,
+ *    wifi performances and power can be impacted but device should not otherwise be
+ *    significantly impacted.
+ *  - Verbose_level 3+ are used when trying to actively debug a problem.
+ *
+ * ring_name represent the name of the ring for which data collection shall start.
+ *
+ * flags: TBD parameter used to enable/disable specific events on a ring
+ * max_interval: maximum interval in seconds for driver to invoke on_ring_buffer_data,
+ *               ignore if zero
+ * min_data_size: minimum data size in buffer for driver to invoke on_ring_buffer_data,
+ *                ignore if zero
+ */
+wifi_error wifi_start_logging(wifi_interface_handle iface, u32 verbose_level, u32 flags,
+    u32 max_interval_sec, u32 min_data_size, char *ring_name);
+
+/**
+ * API to get the status of all ring buffers supported by driver.
+ *  - Caller is responsible to allocate / free ring buffer status.
+ *  - Maximum no of ring buffer would be 10.
+ */
+wifi_error wifi_get_ring_buffers_status(wifi_interface_handle iface, u32 *num_rings,
+    wifi_ring_buffer_status *status);
+
+/**
+ * Synchronous memory dump by user request.
+ *  - Caller is responsible to store memory dump data into a local,
+ *      e.g., /data/misc/wifi/memdump.bin
+ */
+typedef struct {
+    void (*on_firmware_memory_dump) (char *buffer, int buffer_size);
+} wifi_firmware_memory_dump_handler;
+
+/**
+ * API to collect a firmware memory dump for a given iface by async memdump event.
+ *  - Triggered by Alerthandler, esp. when FW problem or FW health check happens
+ *  - Caller is responsible to store fw dump data into a local,
+ *      e.g., /data/misc/wifi/alertdump-1.bin
+ */
+wifi_error wifi_get_firmware_memory_dump(wifi_interface_handle iface,
+    wifi_firmware_memory_dump_handler handler);
+
+/**
+ * API to collect a firmware version string.
+ *  - Caller is responsible to allocate / free a buffer to retrieve firmware verion info.
+ *  - Max string will be at most 256 bytes.
+ */
+wifi_error wifi_get_firmware_version(wifi_interface_handle iface, char *buffer, int buffer_size);
+
+/**
+ * API to collect a driver version string.
+ *  - Caller is responsible to allocate / free a buffer to retrieve driver verion info.
+ *  - Max string will be at most 256 bytes.
+ */
+wifi_error wifi_get_driver_version(wifi_interface_handle iface, char *buffer, int buffer_size);
+
+
+/* Feature set */
+enum {
+    WIFI_LOGGER_MEMORY_DUMP_SUPPORTED = (1 << (0)),             // Memory dump of FW
+    WIFI_LOGGER_PER_PACKET_TX_RX_STATUS_SUPPORTED = (1 << (1)), // PKT status
+    WIFI_LOGGER_CONNECT_EVENT_SUPPORTED = (1 << (2)),           // Connectivity event
+    WIFI_LOGGER_POWER_EVENT_SUPPORTED = (1 << (3)),             // POWER of Driver
+    WIFI_LOGGER_WAKE_LOCK_SUPPORTED = (1 << (4)),               // WAKE LOCK of Driver
+    WIFI_LOGGER_VERBOSE_SUPPORTED = (1 << (5)),                 // verbose log of FW
+    WIFI_LOGGER_WATCHDOG_TIMER_SUPPORTED = (1 << (6)),          // monitor the health of FW
+    WIFI_LOGGER_DRIVER_DUMP_SUPPORTED = (1 << (7)),             // dumps driver state
+    WIFI_LOGGER_PACKET_FATE_SUPPORTED = (1 << (8)),             // tracks connection packets' fate
+};
+
+/**
+ * API to retrieve the current supportive features.
+ *  - An integer variable is enough to have bit mapping info by caller.
+ */
+wifi_error wifi_get_logger_supported_feature_set(wifi_interface_handle iface,
+    unsigned int *support);
+
+typedef struct {
+    /* Buffer is to be allocated and freed by HAL implementation. */
+    void (*on_driver_memory_dump) (char *buffer, int buffer_size);
+} wifi_driver_memory_dump_callbacks;
+
+/**
+    API to collect driver state.
+
+    Framework will call this API soon before or after (but not
+    concurrently with) wifi_get_firmware_memory_dump(). Capturing
+    firmware and driver dumps is intended to help identify
+    inconsistent state between these components.
+
+    - In response to this call, HAL implementation should make one or
+      more calls to callbacks.on_driver_memory_dump(). Framework will
+      copy data out of the received |buffer|s, and concatenate the
+      contents thereof.
+    - HAL implemention will indicate completion of the driver memory
+      dump by returning from this call.
+*/
+wifi_error wifi_get_driver_memory_dump(
+    wifi_interface_handle iface,
+    wifi_driver_memory_dump_callbacks callbacks);
+
+
+/* packet fate logs */
+
+#define MD5_PREFIX_LEN             4
+#define MAX_FATE_LOG_LEN           32
+#define MAX_FRAME_LEN_ETHERNET     1518
+#define MAX_FRAME_LEN_80211_MGMT   2352  // 802.11-2012 Fig. 8-34
+
+typedef enum {
+    // Sent over air and ACKed.
+    TX_PKT_FATE_ACKED,
+
+    // Sent over air but not ACKed. (Normal for broadcast/multicast.)
+    TX_PKT_FATE_SENT,
+
+    // Queued within firmware, but not yet sent over air.
+    TX_PKT_FATE_FW_QUEUED,
+
+    // Dropped by firmware as invalid. E.g. bad source address, bad checksum,
+    // or invalid for current state.
+    TX_PKT_FATE_FW_DROP_INVALID,
+
+    // Dropped by firmware due to lack of buffer space.
+    TX_PKT_FATE_FW_DROP_NOBUFS,
+
+    // Dropped by firmware for any other reason. Includes frames that
+    // were sent by driver to firmware, but unaccounted for by
+    // firmware.
+    TX_PKT_FATE_FW_DROP_OTHER,
+
+    // Queued within driver, not yet sent to firmware.
+    TX_PKT_FATE_DRV_QUEUED,
+
+    // Dropped by driver as invalid. E.g. bad source address, or
+    // invalid for current state.
+    TX_PKT_FATE_DRV_DROP_INVALID,
+
+    // Dropped by driver due to lack of buffer space.
+    TX_PKT_FATE_DRV_DROP_NOBUFS,
+
+    // Dropped by driver for any other reason.
+    TX_PKT_FATE_DRV_DROP_OTHER,
+} wifi_tx_packet_fate;
+
+typedef enum {
+    // Valid and delivered to network stack (e.g., netif_rx()).
+    RX_PKT_FATE_SUCCESS,
+
+    // Queued within firmware, but not yet sent to driver.
+    RX_PKT_FATE_FW_QUEUED,
+
+    // Dropped by firmware due to host-programmable filters.
+    RX_PKT_FATE_FW_DROP_FILTER,
+
+    // Dropped by firmware as invalid. E.g. bad checksum, decrypt failed,
+    // or invalid for current state.
+    RX_PKT_FATE_FW_DROP_INVALID,
+
+    // Dropped by firmware due to lack of buffer space.
+    RX_PKT_FATE_FW_DROP_NOBUFS,
+
+    // Dropped by firmware for any other reason.
+    RX_PKT_FATE_FW_DROP_OTHER,
+
+    // Queued within driver, not yet delivered to network stack.
+    RX_PKT_FATE_DRV_QUEUED,
+
+    // Dropped by driver due to filter rules.
+    RX_PKT_FATE_DRV_DROP_FILTER,
+
+    // Dropped by driver as invalid. E.g. not permitted in current state.
+    RX_PKT_FATE_DRV_DROP_INVALID,
+
+    // Dropped by driver due to lack of buffer space.
+    RX_PKT_FATE_DRV_DROP_NOBUFS,
+
+    // Dropped by driver for any other reason.
+    RX_PKT_FATE_DRV_DROP_OTHER,
+} wifi_rx_packet_fate;
+
+typedef enum {
+    FRAME_TYPE_UNKNOWN,
+    FRAME_TYPE_ETHERNET_II,
+    FRAME_TYPE_80211_MGMT,
+} frame_type;
+
+typedef struct {
+    // The type of MAC-layer frame that this frame_info holds.
+    // - For data frames, use FRAME_TYPE_ETHERNET_II.
+    // - For management frames, use FRAME_TYPE_80211_MGMT.
+    // - If the type of the frame is unknown, use FRAME_TYPE_UNKNOWN.
+    frame_type payload_type;
+
+    // The number of bytes included in |frame_content|. If the frame
+    // contents are missing (e.g. RX frame dropped in firmware),
+    // |frame_len| should be set to 0.
+    size_t frame_len;
+
+    // Host clock when this frame was received by the driver (either
+    // outbound from the host network stack, or inbound from the
+    // firmware).
+    // - The timestamp should be taken from a clock which includes time
+    //   the host spent suspended (e.g. ktime_get_boottime()).
+    // - If no host timestamp is available (e.g. RX frame was dropped in
+    //   firmware), this field should be set to 0.
+    u32 driver_timestamp_usec;
+
+    // Firmware clock when this frame was received by the firmware
+    // (either outbound from the host, or inbound from a remote
+    // station).
+    // - The timestamp should be taken from a clock which includes time
+    //   firmware spent suspended (if applicable).
+    // - If no firmware timestamp is available (e.g. TX frame was
+    //   dropped by driver), this field should be set to 0.
+    // - Consumers of |frame_info| should _not_ assume any
+    //   synchronization between driver and firmware clocks.
+    u32 firmware_timestamp_usec;
+
+    // Actual frame content.
+    // - Should be provided for TX frames originated by the host.
+    // - Should be provided for RX frames received by the driver.
+    // - Optionally provided for TX frames originated by firmware. (At
+    //   discretion of HAL implementation.)
+    // - Optionally provided for RX frames dropped in firmware. (At
+    //   discretion of HAL implementation.)
+    // - If frame content is not provided, |frame_len| should be set
+    //   to 0.
+    union {
+      char ethernet_ii_bytes[MAX_FRAME_LEN_ETHERNET];
+      char ieee_80211_mgmt_bytes[MAX_FRAME_LEN_80211_MGMT];
+    } frame_content;
+} frame_info;
+
+typedef struct {
+    // Prefix of MD5 hash of |frame_inf.frame_content|. If frame
+    // content is not provided, prefix of MD5 hash over the same data
+    // that would be in frame_content, if frame content were provided.
+    char md5_prefix[MD5_PREFIX_LEN];
+    wifi_tx_packet_fate fate;
+    frame_info frame_inf;
+} wifi_tx_report;
+
+typedef struct {
+    // Prefix of MD5 hash of |frame_inf.frame_content|. If frame
+    // content is not provided, prefix of MD5 hash over the same data
+    // that would be in frame_content, if frame content were provided.
+    char md5_prefix[MD5_PREFIX_LEN];
+    wifi_rx_packet_fate fate;
+    frame_info frame_inf;
+} wifi_rx_report;
+
+/**
+    API to start packet fate monitoring.
+    - Once stared, monitoring should remain active until HAL is unloaded.
+    - When HAL is unloaded, all packet fate buffers should be cleared.
+*/
+wifi_error wifi_start_pkt_fate_monitoring(wifi_interface_handle handle);
+
+/**
+    API to retrieve fates of outbound packets.
+    - HAL implementation should fill |tx_report_bufs| with fates of
+      _first_ min(n_requested_fates, actual packets) frames
+      transmitted for the most recent association. The fate reports
+      should follow the same order as their respective packets.
+    - HAL implementation may choose (but is not required) to include
+      reports for management frames.
+    - Packets reported by firmware, but not recognized by driver,
+      should be included.  However, the ordering of the corresponding
+      reports is at the discretion of HAL implementation.
+    - Framework may call this API multiple times for the same association.
+    - Framework will ensure |n_requested_fates <= MAX_FATE_LOG_LEN|.
+    - Framework will allocate and free the referenced storage.
+*/
+wifi_error wifi_get_tx_pkt_fates(wifi_interface_handle handle,
+        wifi_tx_report *tx_report_bufs,
+        size_t n_requested_fates,
+        size_t *n_provided_fates);
+
+/**
+    API to retrieve fates of inbound packets.
+    - HAL implementation should fill |rx_report_bufs| with fates of
+      _first_ min(n_requested_fates, actual packets) frames
+      received for the most recent association. The fate reports
+      should follow the same order as their respective packets.
+    - HAL implementation may choose (but is not required) to include
+      reports for management frames.
+    - Packets reported by firmware, but not recognized by driver,
+      should be included.  However, the ordering of the corresponding
+      reports is at the discretion of HAL implementation.
+    - Framework may call this API multiple times for the same association.
+    - Framework will ensure |n_requested_fates <= MAX_FATE_LOG_LEN|.
+    - Framework will allocate and free the referenced storage.
+*/
+wifi_error wifi_get_rx_pkt_fates(wifi_interface_handle handle,
+        wifi_rx_report *rx_report_bufs,
+        size_t n_requested_fates,
+        size_t *n_provided_fates);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /*__WIFI_HAL_STATS_ */
diff --git a/wifi/legacy_headers/include/hardware_legacy/wifi_nan.h b/wifi/legacy_headers/include/hardware_legacy/wifi_nan.h
new file mode 100644
index 0000000..55034d1
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/wifi_nan.h
@@ -0,0 +1,3500 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __NAN_H__
+#define __NAN_H__
+
+#include <net/if.h>
+#include <stdbool.h>
+#include "wifi_hal.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+/*****************************************************************************
+ * Neighbour Aware Network Service Structures and Functions
+ *****************************************************************************/
+
+/*
+  Definitions
+  All multi-byte fields within all NAN protocol stack messages are assumed to be in Little Endian order.
+*/
+
+typedef int NanVersion;
+typedef u16 transaction_id;
+typedef u32 NanDataPathId;
+
+#define NAN_MAC_ADDR_LEN                6
+#define NAN_MAJOR_VERSION               4
+#define NAN_MINOR_VERSION               0
+#define NAN_MICRO_VERSION               0
+#define NAN_MAX_SOCIAL_CHANNELS         3
+
+/* NAN Maximum Lengths */
+#define NAN_MAX_SERVICE_NAME_LEN                255
+#define NAN_MAX_MATCH_FILTER_LEN                255
+#define NAN_MAX_SERVICE_SPECIFIC_INFO_LEN       1024
+#define NAN_MAX_VSA_DATA_LEN                    1024
+#define NAN_MAX_MESH_DATA_LEN                   32
+#define NAN_MAX_INFRA_DATA_LEN                  32
+#define NAN_MAX_CLUSTER_ATTRIBUTE_LEN           255
+#define NAN_MAX_SUBSCRIBE_MAX_ADDRESS           42
+#define NAN_MAX_FAM_CHANNELS                    32
+#define NAN_MAX_POSTDISCOVERY_LEN               5
+#define NAN_MAX_FRAME_DATA_LEN                  504
+#define NAN_DP_MAX_APP_INFO_LEN                 512
+#define NAN_ERROR_STR_LEN                       255
+#define NAN_PMK_INFO_LEN                        32
+#define NAN_MAX_SCID_BUF_LEN                    1024
+#define NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN  2048
+#define NAN_SECURITY_MIN_PASSPHRASE_LEN         8
+#define NAN_SECURITY_MAX_PASSPHRASE_LEN         63
+#define NAN_MAX_CHANNEL_INFO_SUPPORTED          4
+#define NAN_IDENTITY_KEY_LEN                    16
+#define NAN_IDENTITY_TAG_LEN                    8
+#define NAN_IDENTITY_NONCE_LEN                  8
+#define NAN_MAX_MATCH_IDENTITY_LEN             1024
+/*
+  Definition of various NanResponseType
+*/
+typedef enum {
+    NAN_RESPONSE_ENABLED                 = 0,
+    NAN_RESPONSE_DISABLED                = 1,
+    NAN_RESPONSE_PUBLISH                 = 2,
+    NAN_RESPONSE_PUBLISH_CANCEL          = 3,
+    NAN_RESPONSE_TRANSMIT_FOLLOWUP       = 4,
+    NAN_RESPONSE_SUBSCRIBE               = 5,
+    NAN_RESPONSE_SUBSCRIBE_CANCEL        = 6,
+    NAN_RESPONSE_STATS                   = 7,
+    NAN_RESPONSE_CONFIG                  = 8,
+    NAN_RESPONSE_TCA                     = 9,
+    NAN_RESPONSE_ERROR                   = 10,
+    NAN_RESPONSE_BEACON_SDF_PAYLOAD      = 11,
+    NAN_GET_CAPABILITIES                 = 12,
+    NAN_DP_INTERFACE_CREATE              = 13,
+    NAN_DP_INTERFACE_DELETE              = 14,
+    NAN_DP_INITIATOR_RESPONSE            = 15,
+    NAN_DP_RESPONDER_RESPONSE            = 16,
+    NAN_DP_END                           = 17,
+    NAN_PAIRING_INITIATOR_RESPONSE       = 18,
+    NAN_PAIRING_RESPONDER_RESPONSE       = 19,
+    NAN_BOOTSTRAPPING_INITIATOR_RESPONSE = 20,
+    NAN_BOOTSTRAPPING_RESPONDER_RESPONSE = 21,
+    NAN_PAIRING_END                      = 22,
+    NAN_SUSPEND_REQUEST_RESPONSE         = 23,
+    NAN_RESUME_REQUEST_RESPONSE          = 24
+} NanResponseType;
+
+/* NAN Publish Types */
+typedef enum {
+    NAN_PUBLISH_TYPE_UNSOLICITED = 0,
+    NAN_PUBLISH_TYPE_SOLICITED,
+    NAN_PUBLISH_TYPE_UNSOLICITED_SOLICITED
+} NanPublishType;
+
+/* NAN Transmit Priorities */
+typedef enum {
+    NAN_TX_PRIORITY_NORMAL = 0,
+    NAN_TX_PRIORITY_HIGH
+} NanTxPriority;
+
+/* NAN Statistics Request ID Codes */
+typedef enum {
+    NAN_STATS_ID_DE_PUBLISH = 0,
+    NAN_STATS_ID_DE_SUBSCRIBE,
+    NAN_STATS_ID_DE_MAC,
+    NAN_STATS_ID_DE_TIMING_SYNC,
+    NAN_STATS_ID_DE_DW,
+    NAN_STATS_ID_DE
+} NanStatsType;
+
+/* NAN Protocol Event ID Codes */
+typedef enum {
+    NAN_EVENT_ID_DISC_MAC_ADDR = 0,
+    NAN_EVENT_ID_STARTED_CLUSTER,
+    NAN_EVENT_ID_JOINED_CLUSTER
+} NanDiscEngEventType;
+
+/* NAN Data Path type */
+typedef enum {
+    NAN_DATA_PATH_UNICAST_MSG = 0,
+    NAN_DATA_PATH_MULTICAST_MSG
+} NdpType;
+
+/* NAN Ranging Configuration */
+typedef enum {
+    NAN_RANGING_DISABLE = 0,
+    NAN_RANGING_ENABLE
+} NanRangingState;
+
+/* TCA Type */
+typedef enum {
+    NAN_TCA_ID_CLUSTER_SIZE = 0
+} NanTcaType;
+
+/* pairing request type*/
+typedef enum {
+    NAN_PAIRING_SETUP = 0,
+    NAN_PAIRING_VERIFICATION = 1
+} NanPairingRequestType;
+
+/* Nan AKM type */
+typedef enum {
+    SAE = 0,
+    PASN = 1
+} NanAkm;
+
+/* NAN Channel Info */
+typedef struct {
+    u32 channel;
+    u32 bandwidth;
+    u32 nss;
+} NanChannelInfo;
+
+/*
+  Various NAN Protocol Response code
+*/
+typedef enum {
+    /* NAN Protocol Response Codes */
+    NAN_STATUS_SUCCESS = 0,
+    /*  NAN Discovery Engine/Host driver failures */
+    NAN_STATUS_INTERNAL_FAILURE = 1,
+    /*  NAN OTA failures */
+    NAN_STATUS_PROTOCOL_FAILURE = 2,
+    /* if the publish/subscribe id is invalid */
+    NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID = 3,
+    /* If we run out of resources allocated */
+    NAN_STATUS_NO_RESOURCE_AVAILABLE = 4,
+    /* if invalid params are passed */
+    NAN_STATUS_INVALID_PARAM = 5,
+    /*  if the requestor instance id is invalid */
+    NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID = 6,
+    /*  if the ndp id is invalid */
+    NAN_STATUS_INVALID_NDP_ID = 7,
+    /* if NAN is enabled when wifi is turned off */
+    NAN_STATUS_NAN_NOT_ALLOWED = 8,
+    /* if over the air ack is not received */
+    NAN_STATUS_NO_OTA_ACK = 9,
+    /* If NAN is already enabled and we are try to re-enable the same */
+    NAN_STATUS_ALREADY_ENABLED = 10,
+    /* If followup message internal queue is full */
+    NAN_STATUS_FOLLOWUP_QUEUE_FULL = 11,
+    /* Unsupported concurrency session enabled, NAN disabled notified */
+    NAN_STATUS_UNSUPPORTED_CONCURRENCY_NAN_DISABLED = 12,
+    /*  if the pairing id is invalid */
+    NAN_STATUS_INVALID_PAIRING_ID = 13,
+    /*  if the bootstrapping id is invalid */
+    NAN_STATUS_INVALID_BOOTSTRAPPING_ID = 14,
+    /* If same request is received again */
+    NAN_STATUS_REDUNDANT_REQUEST = 15,
+    /* If current request is not supported */
+    NAN_STATUS_NOT_SUPPORTED = 16,
+    /* If no Wifi Aware connection is active */
+    NAN_STATUS_NO_CONNECTION = 17,
+} NanStatusType;
+
+/* NAN Transmit Types */
+typedef enum {
+    NAN_TX_TYPE_BROADCAST = 0,
+    NAN_TX_TYPE_UNICAST
+} NanTxType;
+
+/* NAN Subscribe Type */
+typedef enum {
+    NAN_SUBSCRIBE_TYPE_PASSIVE = 0,
+    NAN_SUBSCRIBE_TYPE_ACTIVE
+} NanSubscribeType;
+
+/* NAN Service Response Filter Attribute Bit */
+typedef enum {
+    NAN_SRF_ATTR_BLOOM_FILTER = 0,
+    NAN_SRF_ATTR_PARTIAL_MAC_ADDR
+} NanSRFType;
+
+/* NAN Service Response Filter Include Bit */
+typedef enum {
+    NAN_SRF_INCLUDE_DO_NOT_RESPOND = 0,
+    NAN_SRF_INCLUDE_RESPOND
+} NanSRFIncludeType;
+
+/* NAN Match indication type */
+typedef enum {
+    NAN_MATCH_ALG_MATCH_ONCE = 0,
+    NAN_MATCH_ALG_MATCH_CONTINUOUS,
+    NAN_MATCH_ALG_MATCH_NEVER
+} NanMatchAlg;
+
+/* NAN Transmit Window Type */
+typedef enum {
+    NAN_TRANSMIT_IN_DW = 0,
+    NAN_TRANSMIT_IN_FAW
+} NanTransmitWindowType;
+
+/* NAN SRF State in Subscribe */
+typedef enum {
+    NAN_DO_NOT_USE_SRF = 0,
+    NAN_USE_SRF
+} NanSRFState;
+
+/* NAN Include SSI in MatchInd */
+typedef enum {
+    NAN_SSI_NOT_REQUIRED_IN_MATCH_IND = 0,
+    NAN_SSI_REQUIRED_IN_MATCH_IND
+} NanSsiInMatchInd;
+
+/* NAN DP security Configuration */
+typedef enum {
+    NAN_DP_CONFIG_NO_SECURITY = 0,
+    NAN_DP_CONFIG_SECURITY
+} NanDataPathSecurityCfgStatus;
+
+typedef enum {
+    NAN_QOS_NOT_REQUIRED = 0,
+    NAN_QOS_REQUIRED
+} NanQosCfgStatus;
+
+
+/* Data request Responder's response */
+typedef enum {
+    NAN_DP_REQUEST_ACCEPT = 0,
+    NAN_DP_REQUEST_REJECT
+} NanDataPathResponseCode;
+
+/* Pairing request Responder's response */
+typedef enum {
+    NAN_PAIRING_REQUEST_ACCEPT = 0,
+    NAN_PAIRING_REQUEST_REJECT
+} NanPairingResponseCode;
+
+/* Pairing bootstrapping Responder's response */
+typedef enum {
+    NAN_BOOTSTRAPPING_REQUEST_ACCEPT = 0,
+    NAN_BOOTSTRAPPING_REQUEST_REJECT = 1,
+    NAN_BOOTSTRAPPING_REQUEST_COMEBACK = 2
+} NanBootstrappingResponseCode;
+
+/* NAN DP channel config options */
+typedef enum {
+    NAN_DP_CHANNEL_NOT_REQUESTED = 0,
+    NAN_DP_REQUEST_CHANNEL_SETUP,
+    NAN_DP_FORCE_CHANNEL_SETUP
+} NanDataPathChannelCfg;
+
+/* Enable/Disable NAN Ranging Auto response */
+typedef enum {
+    NAN_RANGING_AUTO_RESPONSE_ENABLE = 1,
+    NAN_RANGING_AUTO_RESPONSE_DISABLE
+} NanRangingAutoResponse;
+
+/* Enable/Disable NAN service range report */
+typedef enum {
+    NAN_DISABLE_RANGE_REPORT = 1,
+    NAN_ENABLE_RANGE_REPORT
+} NanRangeReport;
+
+/* NAN Range Response */
+typedef enum {
+    NAN_RANGE_REQUEST_ACCEPT = 1,
+    NAN_RANGE_REQUEST_REJECT,
+    NAN_RANGE_REQUEST_CANCEL
+} NanRangeResponse;
+
+/* NAN Security Key Input Type*/
+typedef enum {
+    NAN_SECURITY_KEY_INPUT_PMK = 1,
+    NAN_SECURITY_KEY_INPUT_PASSPHRASE
+} NanSecurityKeyInputType;
+
+typedef struct {
+    /* pmk length */
+    u32 pmk_len;
+    /*
+       PMK: Info is optional in Discovery phase.
+       PMK info can be passed during
+       the NDP session.
+     */
+    u8 pmk[NAN_PMK_INFO_LEN];
+} NanSecurityPmk;
+
+typedef struct {
+    /* passphrase length */
+    u32 passphrase_len;
+    /*
+       passphrase info is optional in Discovery phase.
+       passphrase info can be passed during
+       the NDP session.
+     */
+    u8 passphrase[NAN_SECURITY_MAX_PASSPHRASE_LEN];
+} NanSecurityPassPhrase;
+
+typedef struct {
+    NanSecurityKeyInputType key_type;
+    union {
+        NanSecurityPmk pmk_info;
+        NanSecurityPassPhrase passphrase_info;
+    } body;
+} NanSecurityKeyInfo;
+
+/* NAN Security Cipher Suites Mask */
+#define NAN_CIPHER_SUITE_SHARED_KEY_NONE               0x00
+#define NAN_CIPHER_SUITE_SHARED_KEY_128_MASK           0x01
+#define NAN_CIPHER_SUITE_SHARED_KEY_256_MASK           0x02
+#define NAN_CIPHER_SUITE_PUBLIC_KEY_2WDH_128_MASK      0x04
+#define NAN_CIPHER_SUITE_PUBLIC_KEY_2WDH_256_MASK      0x08
+#define NAN_CIPHER_SUITE_PUBLIC_KEY_PASN_128_MASK      0x40
+#define NAN_CIPHER_SUITE_PUBLIC_KEY_PASN_256_MASK      0x80
+
+/* NAN ranging indication condition MASKS */
+#define NAN_RANGING_INDICATE_CONTINUOUS_MASK   0x01
+#define NAN_RANGING_INDICATE_INGRESS_MET_MASK  0x02
+#define NAN_RANGING_INDICATE_EGRESS_MET_MASK   0x04
+
+/* NAN schedule update reason MASKS */
+#define NAN_SCHEDULE_UPDATE_NSS_MASK   0x01
+#define NAN_SCHEDULE_UPDATE_CHANNEL_MASK  0x02
+
+/* NAN pairing bootstrapping method */
+#define NAN_PAIRING_BOOTSTRAPPING_OPPORTUNISTIC_MASK       0x01
+#define NAN_PAIRING_BOOTSTRAPPING_PIN_CODE_DISPLAY_MASK    0x02
+#define NAN_PAIRING_BOOTSTRAPPING_PASSPHRASE_DISPLAY_MASK  0x04
+#define NAN_PAIRING_BOOTSTRAPPING_QR_DISPLAY_MASK          0x08
+#define NAN_PAIRING_BOOTSTRAPPING_NFC_TAG_MASK             0x10
+#define NAN_PAIRING_BOOTSTRAPPING_PIN_CODE_KEYPAD_MASK     0x20
+#define NAN_PAIRING_BOOTSTRAPPING_PASSPHRASE_KEYPAD_MASK   0x40
+#define NAN_PAIRING_BOOTSTRAPPING_QR_SCAN_MASK             0x80
+#define NAN_PAIRING_BOOTSTRAPPING_NFC_READER_MASK          0x100
+#define NAN_PAIRING_BOOTSTRAPPING_SERVICE_MANAGED_MASK     0x4000
+#define NAN_PAIRING_BOOTSTRAPPING_HANDSHAKE_SHIP_MASK      0x8000
+
+/*
+   Structure to set the Service Descriptor Extension
+   Attribute (SDEA) passed as part of NanPublishRequest/
+   NanSubscribeRequest/NanMatchInd.
+*/
+typedef struct {
+    /*
+       Optional configuration of Data Path Enable request.
+       configure flag determines whether configuration needs
+       to be passed or not.
+    */
+    u8 config_nan_data_path;
+    NdpType ndp_type;
+    /*
+       NAN secuirty required flag to indicate
+       if the security is enabled or disabled
+    */
+    NanDataPathSecurityCfgStatus security_cfg;
+    /*
+       NAN ranging required flag to indicate
+       if ranging is enabled on disabled
+    */
+    NanRangingState ranging_state;
+    /*
+      Enable/Disable Ranging report,
+      when configured NanRangeReportInd received
+    */
+    NanRangeReport range_report;
+    /*
+      NAN QOS required flag to indicate
+      if QOS is required or not.
+    */
+    NanQosCfgStatus qos_cfg;
+    /*
+      Config to set FSD with Gas bit
+      in the SDEA Control Field.
+     */
+    u8 config_fsd_gas;
+    u8 enable_fsd_gas;
+
+    /*
+      Config to set FSD Required bit
+      in the SDEA Control Field.
+     */
+    u8 config_fsd_req;
+    u8 enable_fsd_req;
+
+    /*
+      Config to set gtk protection bit
+      in the SDEA Control Field.
+     */
+    u8 gtk_protection;
+} NanSdeaCtrlParams;
+
+/*
+   Nan Ranging Peer Info in MatchInd
+*/
+typedef struct {
+    /*
+       Distance to the NAN device with the MAC address indicated
+       with ranged mac address.
+    */
+    u32 range_measurement_mm;
+    /* Ranging event matching the configuration of continuous/ingress/egress. */
+    u32 ranging_event_type;
+} NanRangeInfo;
+
+/* Nan/NDP Capabilites info */
+typedef struct {
+    u32 max_concurrent_nan_clusters;
+    u32 max_publishes;
+    u32 max_subscribes;
+    u32 max_service_name_len;
+    u32 max_match_filter_len;
+    u32 max_total_match_filter_len;
+    u32 max_service_specific_info_len;
+    u32 max_vsa_data_len;
+    u32 max_mesh_data_len;
+    u32 max_ndi_interfaces;
+    u32 max_ndp_sessions;
+    u32 max_app_info_len;
+    u32 max_queued_transmit_followup_msgs;
+    u32 ndp_supported_bands;
+    u32 cipher_suites_supported;
+    u32 max_scid_len;
+    bool is_ndp_security_supported;
+    u32 max_sdea_service_specific_info_len;
+    u32 max_subscribe_address;
+    u32 ndpe_attr_supported;
+    bool is_instant_mode_supported;
+    bool is_6g_supported;
+    bool is_he_supported;
+    bool is_pairing_supported;
+    bool is_set_cluster_id_supported;
+    bool is_suspension_supported;
+} NanCapabilities;
+
+/*
+  Nan accept policy: Per service basis policy
+  Based on this policy(ALL/NONE), responder side
+  will send ACCEPT/REJECT
+*/
+typedef enum {
+    NAN_SERVICE_ACCEPT_POLICY_NONE = 0,
+    /* Default value */
+    NAN_SERVICE_ACCEPT_POLICY_ALL
+} NanServiceAcceptPolicy;
+
+/*
+  Host can send Vendor specific attributes which the Discovery Engine can
+  enclose in Beacons and/or Service Discovery frames transmitted.
+  Below structure is used to populate that.
+*/
+typedef struct {
+    /*
+       0 = transmit only in the next discovery window
+       1 = transmit in next 16 discovery window
+    */
+    u8 payload_transmit_flag;
+    /*
+       Below flags will determine in which all frames
+       the vendor specific attributes should be included
+    */
+    u8 tx_in_discovery_beacon;
+    u8 tx_in_sync_beacon;
+    u8 tx_in_service_discovery;
+    /* Organizationally Unique Identifier */
+    u32 vendor_oui;
+    /*
+       vendor specific attribute to be transmitted
+       vsa_len : Length of the vsa data.
+     */
+    u32 vsa_len;
+    u8 vsa[NAN_MAX_VSA_DATA_LEN];
+} NanTransmitVendorSpecificAttribute;
+
+
+/*
+  Discovery Engine will forward any Vendor Specific Attributes
+  which it received as part of this structure.
+*/
+/* Mask to determine on which frames attribute was received */
+#define RX_DISCOVERY_BEACON_MASK  0x01
+#define RX_SYNC_BEACON_MASK       0x02
+#define RX_SERVICE_DISCOVERY_MASK 0x04
+typedef struct {
+    /*
+       Frames on which this vendor specific attribute
+       was received. Mask defined above
+    */
+    u8 vsa_received_on;
+    /* Organizationally Unique Identifier */
+    u32 vendor_oui;
+    /* vendor specific attribute */
+    u32 attr_len;
+    u8 vsa[NAN_MAX_VSA_DATA_LEN];
+} NanReceiveVendorSpecificAttribute;
+
+/*
+   NAN Beacon SDF Payload Received structure
+   Discovery engine sends the details of received Beacon or
+   Service Discovery Frames as part of this structure.
+*/
+typedef struct {
+    /* Frame data */
+    u32 frame_len;
+    u8 frame_data[NAN_MAX_FRAME_DATA_LEN];
+} NanBeaconSdfPayloadReceive;
+
+/*
+  Host can set the Periodic scan parameters for each of the
+  3(6, 44, 149) Social channels. Only these channels are allowed
+  any other channels are rejected
+*/
+typedef enum {
+    NAN_CHANNEL_24G_BAND = 0,
+    NAN_CHANNEL_5G_BAND_LOW,
+    NAN_CHANNEL_5G_BAND_HIGH
+} NanChannelIndex;
+
+/*
+   Structure to set the Social Channel Scan parameters
+   passed as part of NanEnableRequest/NanConfigRequest
+*/
+typedef struct {
+    /*
+       Dwell time of each social channel in milliseconds
+       NanChannelIndex corresponds to the respective channel
+       If time set to 0 then the FW default time will be used.
+    */
+    u8 dwell_time[NAN_MAX_SOCIAL_CHANNELS]; // default value 200 msec
+
+    /*
+       Scan period of each social channel in seconds
+       NanChannelIndex corresponds to the respective channel
+       If time set to 0 then the FW default time will be used.
+    */
+    u16 scan_period[NAN_MAX_SOCIAL_CHANNELS]; // default value 20 sec
+} NanSocialChannelScanParams;
+
+/*
+  Host can send Post Connectivity Capability attributes
+  to be included in Service Discovery frames transmitted
+  as part of this structure.
+*/
+typedef struct {
+    /*
+       0 = transmit only in the next discovery window
+       1 = transmit in next 16 discovery window
+    */
+    u8 payload_transmit_flag;
+    /* 1 - Wifi Direct supported 0 - Not supported */
+    u8 is_wfd_supported;
+    /* 1 - Wifi Direct Services supported 0 - Not supported */
+    u8 is_wfds_supported;
+    /* 1 - TDLS supported 0 - Not supported */
+    u8 is_tdls_supported;
+    /* 1 - IBSS supported 0 - Not supported */
+    u8 is_ibss_supported;
+    /* 1 - Mesh supported 0 - Not supported */
+    u8 is_mesh_supported;
+    /*
+       1 - NAN Device currently connect to WLAN Infra AP
+       0 - otherwise
+    */
+    u8 wlan_infra_field;
+} NanTransmitPostConnectivityCapability;
+
+/*
+  Discovery engine providing the post connectivity capability
+  received.
+*/
+typedef struct {
+    /* 1 - Wifi Direct supported 0 - Not supported */
+    u8 is_wfd_supported;
+    /* 1 - Wifi Direct Services supported 0 - Not supported */
+    u8 is_wfds_supported;
+    /* 1 - TDLS supported 0 - Not supported */
+    u8 is_tdls_supported;
+    /* 1 - IBSS supported 0 - Not supported */
+    u8 is_ibss_supported;
+    /* 1 - Mesh supported 0 - Not supported */
+    u8 is_mesh_supported;
+    /*
+       1 - NAN Device currently connect to WLAN Infra AP
+       0 - otherwise
+    */
+    u8 wlan_infra_field;
+} NanReceivePostConnectivityCapability;
+
+/*
+  Indicates the availability interval duration associated with the
+  Availability Intervals Bitmap field
+*/
+typedef enum {
+    NAN_DURATION_16MS = 0,
+    NAN_DURATION_32MS = 1,
+    NAN_DURATION_64MS = 2
+} NanAvailDuration;
+
+/* Further availability per channel information */
+typedef struct {
+    /* Defined above */
+    NanAvailDuration entry_control;
+    /*
+       1 byte field indicating the frequency band the NAN Device
+       will be available as defined in IEEE Std. 802.11-2012
+       Annex E Table E-4 Global Operating Classes
+    */
+    u8 class_val;
+    /*
+       1 byte field indicating the channel the NAN Device
+       will be available.
+    */
+    u8 channel;
+    /*
+        Map Id - 4 bit field which identifies the Further
+        availability map attribute.
+    */
+    u8 mapid;
+    /*
+       divides the time between the beginnings of consecutive Discovery
+       Windows of a given NAN cluster into consecutive time intervals
+       of equal durations. The time interval duration is specified by
+       the Availability Interval Duration subfield of the Entry Control
+       field.
+
+       A Nan device that sets the i-th bit of the Availability
+       Intervals Bitmap to 1 shall be present during the corresponding
+       i-th time interval in the operation channel indicated by the
+       Operating Class and Channel Number fields in the same Availability Entry.
+
+       A Nan device that sets the i-th bit of the Availability Intervals Bitmap to
+       0 may be present during the corresponding i-th time interval in the operation
+       channel indicated by the Operating Class and Channel Number fields in the same
+       Availability Entry.
+
+       The size of the Bitmap is dependent upon the Availability Interval Duration
+       chosen in the Entry Control Field.  The size can be either 1, 2 or 4 bytes long
+
+       - Duration field is equal to 0, only AIB[0] is valid
+       - Duration field is equal to 1, only AIB [0] and AIB [1] is valid
+       - Duration field is equal to 2, AIB [0], AIB [1], AIB [2] and AIB [3] are valid
+    */
+    u32 avail_interval_bitmap;
+} NanFurtherAvailabilityChannel;
+
+/*
+  Further availability map which can be sent and received from
+  Discovery engine
+*/
+typedef struct {
+    /*
+       Number of channels indicates the number of channel
+       entries which is part of fam
+    */
+    u8 numchans;
+    NanFurtherAvailabilityChannel famchan[NAN_MAX_FAM_CHANNELS];
+} NanFurtherAvailabilityMap;
+
+/*
+  Host can send Post-Nan Discovery attributes which the Discovery Engine can
+  enclose in Service Discovery frames
+*/
+/* Possible connection types in Post NAN Discovery attributes */
+typedef enum {
+    NAN_CONN_WLAN_INFRA = 0,
+    NAN_CONN_P2P_OPER = 1,
+    NAN_CONN_WLAN_IBSS = 2,
+    NAN_CONN_WLAN_MESH = 3,
+    NAN_CONN_FURTHER_SERVICE_AVAILABILITY = 4,
+    NAN_CONN_WLAN_RANGING = 5
+} NanConnectionType;
+
+/* Possible device roles in Post NAN Discovery attributes */
+typedef enum {
+    NAN_WLAN_INFRA_AP = 0,
+    NAN_WLAN_INFRA_STA = 1,
+    NAN_P2P_OPER_GO = 2,
+    NAN_P2P_OPER_DEV = 3,
+    NAN_P2P_OPER_CLI = 4
+} NanDeviceRole;
+
+/* Configuration params of NAN Ranging */
+typedef struct {
+    /*
+      Interval in milli sec between two ranging measurements.
+      If the Awake DW intervals in NanEnable/Config are larger
+      than the ranging intervals priority is given to Awake DW
+      Intervals. Only on a match the ranging is initiated for the
+      peer
+    */
+    u32 ranging_interval_msec;
+    /*
+      Flags indicating the type of ranging event to be notified
+      NAN_RANGING_INDICATE_ MASKS are used to set these.
+      BIT0 - Continuous Ranging event notification.
+      BIT1 - Ingress distance is <=.
+      BIT2 - Egress distance is >=.
+    */
+    u32 config_ranging_indications;
+    /* Ingress distance in millimeters (optional) */
+    u32 distance_ingress_mm;
+    /* Egress distance in millmilliimeters (optional) */
+    u32 distance_egress_mm;
+} NanRangingCfg;
+
+/* NAN Ranging request's response */
+typedef struct {
+    /* Publish Id of an earlier Publisher */
+    u16 publish_id;
+    /*
+       A 32 bit Requestor instance Id which is sent to the Application.
+       This Id will be used in subsequent RangeResponse on Subscribe side.
+    */
+    u32 requestor_instance_id;
+    /* Peer MAC addr of Range Requestor */
+    u8 peer_addr[NAN_MAC_ADDR_LEN];
+    /* Response indicating ACCEPT/REJECT/CANCEL of Range Request */
+    NanRangeResponse ranging_response;
+} NanRangeResponseCfg;
+
+/* Structure of Post NAN Discovery attribute */
+typedef struct {
+    /* Connection type of the host */
+    NanConnectionType  type;
+    /*
+       Device role of the host based on
+       the connection type
+    */
+    NanDeviceRole role;
+    /*
+       Flag to send the information as a single shot or repeated
+       for next 16 discovery windows
+       0 - Single_shot
+       1 - next 16 discovery windows
+    */
+    u8 transmit_freq;
+    /* Duration of the availability bitmask */
+    NanAvailDuration duration;
+    /* Availability interval bitmap based on duration */
+    u32 avail_interval_bitmap;
+    /*
+       Mac address depending on the conn type and device role
+       --------------------------------------------------
+       | Conn Type  |  Device Role |  Mac address Usage  |
+       --------------------------------------------------
+       | WLAN_INFRA |  AP/STA      |   BSSID of the AP   |
+       --------------------------------------------------
+       | P2P_OPER   |  GO          |   GO's address      |
+       --------------------------------------------------
+       | P2P_OPER   |  P2P_DEVICE  |   Address of who    |
+       |            |              |   would become GO   |
+       --------------------------------------------------
+       | WLAN_IBSS  |  NA          |   BSSID             |
+       --------------------------------------------------
+       | WLAN_MESH  |  NA          |   BSSID             |
+       --------------------------------------------------
+    */
+    u8 addr[NAN_MAC_ADDR_LEN];
+    /*
+       Mandatory mesh id value if connection type is WLAN_MESH
+       Mesh id contains 0-32 octet identifier and should be
+       as per IEEE Std.802.11-2012 spec.
+    */
+    u16 mesh_id_len;
+    u8 mesh_id[NAN_MAX_MESH_DATA_LEN];
+    /*
+       Optional infrastructure SSID if conn_type is set to
+       NAN_CONN_WLAN_INFRA
+    */
+    u16 infrastructure_ssid_len;
+    u8 infrastructure_ssid_val[NAN_MAX_INFRA_DATA_LEN];
+} NanTransmitPostDiscovery;
+
+/*
+   Discovery engine providing the structure of Post NAN
+   Discovery
+*/
+typedef struct {
+    /* Connection type of the host */
+    NanConnectionType  type;
+    /*
+       Device role of the host based on
+       the connection type
+    */
+    NanDeviceRole role;
+    /* Duration of the availability bitmask */
+    NanAvailDuration duration;
+    /* Availability interval bitmap based on duration */
+    u32 avail_interval_bitmap;
+    /*
+       Map Id - 4 bit field which identifies the Further
+       availability map attribute.
+    */
+    u8 mapid;
+    /*
+       Mac address depending on the conn type and device role
+       --------------------------------------------------
+       | Conn Type  |  Device Role |  Mac address Usage  |
+       --------------------------------------------------
+       | WLAN_INFRA |  AP/STA      |   BSSID of the AP   |
+       --------------------------------------------------
+       | P2P_OPER   |  GO          |   GO's address      |
+       --------------------------------------------------
+       | P2P_OPER   |  P2P_DEVICE  |   Address of who    |
+       |            |              |   would become GO   |
+       --------------------------------------------------
+       | WLAN_IBSS  |  NA          |   BSSID             |
+       --------------------------------------------------
+       | WLAN_MESH  |  NA          |   BSSID             |
+       --------------------------------------------------
+    */
+    u8 addr[NAN_MAC_ADDR_LEN];
+    /*
+       Mandatory mesh id value if connection type is WLAN_MESH
+       Mesh id contains 0-32 octet identifier and should be
+       as per IEEE Std.802.11-2012 spec.
+    */
+    u16 mesh_id_len;
+    u8 mesh_id[NAN_MAX_MESH_DATA_LEN];
+    /*
+       Optional infrastructure SSID if conn_type is set to
+       NAN_CONN_WLAN_INFRA
+    */
+    u16 infrastructure_ssid_len;
+    u8 infrastructure_ssid_val[NAN_MAX_INFRA_DATA_LEN];
+} NanReceivePostDiscovery;
+
+/*
+   NAN device level configuration of SDF and Sync beacons in both
+   2.4/5GHz bands
+*/
+typedef struct {
+    /* Configure 2.4GHz DW Band */
+    u8 config_2dot4g_dw_band;
+    /*
+       Indicates the interval for Sync beacons and SDF's in 2.4GHz band.
+       Valid values of DW Interval are: 1, 2, 3, 4 and 5, 0 is reserved.
+       The SDF includes in OTA when enabled. The publish/subscribe period
+       values don't override the device level configurations.
+    */
+    u32 dw_2dot4g_interval_val; // default value 1
+    /* Configure 5GHz DW Band */
+    u8 config_5g_dw_band;
+    /*
+       Indicates the interval for Sync beacons and SDF's in 5GHz band
+       Valid values of DW Interval are: 1, 2, 3, 4 and 5, 0 no wake up for
+       any interval. The SDF includes in OTA when enabled. The publish/subscribe
+       period values don't override the device level configurations.
+    */
+    u32 dw_5g_interval_val; // default value 1 when 5G is enabled
+} NanConfigDW;
+
+/*
+  Enable Request Message Structure
+  The NanEnableReq message instructs the Discovery Engine to enter an operational state
+*/
+typedef struct {
+    /* Mandatory parameters below */
+    u8 master_pref; // default value 0x02
+    /*
+      A cluster_low value matching cluster_high indicates a request to join
+      a cluster with that value. If the requested cluster is not found the
+      device will start its own cluster.
+    */
+    u16 cluster_low; // default value 0
+    u16 cluster_high; // default value 0xFFFF
+
+    /*
+      Optional configuration of Enable request.
+      Each of the optional parameters have configure flag which
+      determine whether configuration is to be passed or not.
+    */
+    u8 config_support_5g;
+    u8 support_5g_val; // default value 0; turned off by default
+    /*
+       BIT 0 is used to specify to include Service IDs in Sync/Discovery beacons
+       0 - Do not include SIDs in any beacons
+       1 - Include SIDs in all beacons.
+       Rest 7 bits are count field which allows control over the number of SIDs
+       included in the Beacon.  0 means to include as many SIDs that fit into
+       the maximum allow Beacon frame size
+    */
+    u8 config_sid_beacon;
+    u8 sid_beacon_val; // default value 0x01
+    /*
+       The rssi values below should be specified without sign.
+       For eg: -70dBm should be specified as 70.
+    */
+    u8 config_2dot4g_rssi_close;
+    u8 rssi_close_2dot4g_val;    // default value -60 dBm
+
+    u8 config_2dot4g_rssi_middle;
+    u8 rssi_middle_2dot4g_val;    // default value -70 dBm
+
+    u8 config_2dot4g_rssi_proximity;
+    u8 rssi_proximity_2dot4g_val;//  default value -60dBm
+
+    u8 config_hop_count_limit;
+    u8 hop_count_limit_val; //  default value 0x02
+
+    /*
+       Defines 2.4G channel access support
+       0 - No Support
+       1 - Supported
+    */
+    u8 config_2dot4g_support;
+    u8 support_2dot4g_val; // default value 0x01
+    /*
+       Defines 2.4G channels will be used for sync/discovery beacons
+       0 - 2.4G channels not used for beacons
+       1 - 2.4G channels used for beacons
+    */
+    u8 config_2dot4g_beacons;
+    u8 beacon_2dot4g_val; // default value 1
+    /*
+       Defines 2.4G channels will be used for Service Discovery frames
+       0 - 2.4G channels not used for Service Discovery frames
+       1 - 2.4G channels used for Service Discovery frames
+    */
+    u8 config_2dot4g_sdf;
+    u8 sdf_2dot4g_val; // default value 1
+    /*
+       Defines 5G channels will be used for sync/discovery beacons
+       0 - 5G channels not used for beacons
+       1 - 5G channels used for beacons
+    */
+    u8 config_5g_beacons;
+    u8 beacon_5g_val; // default value 1 when 5G is enabled
+    /*
+       Defines 5G channels will be used for Service Discovery frames
+       0 - 5G channels not used for Service Discovery frames
+       1 - 5G channels used for Service Discovery frames
+    */
+    u8 config_5g_sdf;
+    u8 sdf_5g_val; // default value is 0 when 5G is enabled
+    /*
+       1 byte value which defines the RSSI in
+       dBm for a close by Peer in 5 Ghz channels.
+       The rssi values should be specified without sign.
+       For eg: -70dBm should be specified as 70.
+    */
+    u8 config_5g_rssi_close;
+    u8 rssi_close_5g_val; // default value -60dBm when 5G is enabled
+    /*
+       1 byte value which defines the RSSI value in
+       dBm for a close by Peer in 5 Ghz channels.
+       The rssi values should be specified without sign.
+       For eg: -70dBm should be specified as 70.
+    */
+    u8 config_5g_rssi_middle;
+    u8 rssi_middle_5g_val; // default value -75dBm when 5G is enabled
+    /*
+       1 byte value which defines the RSSI filter
+       threshold.  Any Service Descriptors received above this
+       value that are configured for RSSI filtering will be dropped.
+       The rssi values should be specified without sign.
+       For eg: -70dBm should be specified as 70.
+    */
+    u8 config_5g_rssi_close_proximity;
+    u8 rssi_close_proximity_5g_val; // default value -60dBm when 5G is enabled
+    /*
+       1 byte quantity which defines the window size over
+       which the “average RSSI” will be calculated over.
+    */
+    u8 config_rssi_window_size;
+    u8 rssi_window_size_val; // default value 0x08
+    /*
+       The 24 bit Organizationally Unique ID + the 8 bit Network Id.
+    */
+    u8 config_oui;
+    u32 oui_val; // default value {0x51, 0x6F, 0x9A, 0x01, 0x00, 0x00}
+    /*
+       NAN Interface Address, If not configured the Discovery Engine
+       will generate a 6 byte Random MAC.
+    */
+    u8 config_intf_addr;
+    u8 intf_addr_val[NAN_MAC_ADDR_LEN];
+    /*
+       If set to 1, the Discovery Engine will enclose the Cluster
+       Attribute only sent in Beacons in a Vendor Specific Attribute
+       and transmit in a Service Descriptor Frame.
+    */
+    u8 config_cluster_attribute_val;
+    /*
+       The periodicity in seconds between full scan’s to find any new
+       clusters available in the area.  A Full scan should not be done
+       more than every 10 seconds and should not be done less than every
+       30 seconds.
+    */
+    u8 config_scan_params;
+    NanSocialChannelScanParams scan_params_val;
+    /*
+       1 byte quantity which forces the Random Factor to a particular
+       value for all transmitted Sync/Discovery beacons
+    */
+    u8 config_random_factor_force;
+    u8 random_factor_force_val; // default value off and set to 0x00
+    /*
+       1 byte quantity which forces the HC for all transmitted Sync and
+       Discovery Beacon NO matter the real HC being received over the
+       air.
+    */
+    u8 config_hop_count_force;
+    u8 hop_count_force_val; // default value 0x00
+
+    /* channel frequency in MHz to enable Nan on */
+    u8 config_24g_channel;
+    wifi_channel channel_24g_val; // default value channel 0x6
+
+    u8 config_5g_channel;
+    wifi_channel channel_5g_val; // default value channel 44 or 149 regulatory
+                                 // domain
+    /* Configure 2.4/5GHz DW */
+    NanConfigDW config_dw;
+
+    /*
+       By default discovery MAC address randomization is enabled
+       and default interval value is 30 minutes i.e. 1800 seconds.
+       The value 0 is used to disable MAC addr randomization.
+    */
+    u8 config_disc_mac_addr_randomization;
+    u32 disc_mac_addr_rand_interval_sec; // default value 1800 sec
+
+    /*
+      Set/Enable corresponding bits to disable Discovery indications:
+      BIT0 - Disable Discovery MAC Address Event.
+      BIT1 - Disable Started Cluster Event.
+      BIT2 - Disable Joined Cluster Event.
+    */
+    u8 discovery_indication_cfg;  // default value 0x0
+    /*
+       BIT 0 is used to specify to include Service IDs in Sync/Discovery beacons
+       0 - Do not include SIDs in any beacons
+       1 - Include SIDs in all beacons.
+       Rest 7 bits are count field which allows control over the number of SIDs
+       included in the Beacon.  0 means to include as many SIDs that fit into
+       the maximum allow Beacon frame size
+    */
+    u8 config_subscribe_sid_beacon;
+    u32 subscribe_sid_beacon_val; // default value 0x0
+    /*
+       Discovery Beacon Interval config.
+       Default value is 128 msec in 2G DW and 176 msec in 2G/5G DW.
+       When 0 value is passed it is reset to default value of 128 or 176 msec.
+    */
+    u8 config_discovery_beacon_int;
+    u32 discovery_beacon_interval;
+    /*
+       Enable Number of Spatial Streams.
+       This is NAN Power Optimization feature for NAN discovery.
+    */
+    u8 config_nss;
+    // default value is implementation specific and passing 0 sets it to default
+    u32 nss;
+    /*
+       Enable device level NAN Ranging feature.
+       0 - Disable
+       1 - Enable
+    */
+    u8 config_enable_ranging;
+    u32 enable_ranging;
+    /*
+       Enable/Disable DW Early termination.
+       0 - Disable
+       1 - Enable
+    */
+    u8 config_dw_early_termination;
+    u32 enable_dw_termination;
+    /*
+       Indicate whether to use NDPE attribute to bring-up TCP/IP connection.
+       If config_ndpe_attr is not configured, the default behavior is
+       not using NDPE attr, and the capability is not advertised.
+       0 - Not use
+       1 - Use
+    */
+    u8 config_ndpe_attr;
+    u32 use_ndpe_attr;
+    /*
+        Enable NAN v3.1 instant communication mode.
+        0 - Disable
+        1 - Enable
+    */
+    u8 config_enable_instant_mode;
+    u32 enable_instant_mode;
+    /*
+        Config NAN v3.1 instant communication channel frequency selected over NFC/OOB method.
+        If dual band is supported default channel is 149 or 44 as per regulatory domain,
+        else channel 6 (send frequency in MHz).
+        Sometimes depending on country code retrictions, even 149/44 may be restricted
+        in those cases instant channel will be operational only in 2.4GHz.
+        Use wifi_get_usable_channels() API to get supported bands/channels before
+        Instant mode NFC handshake is triggered
+    */
+    u8 config_instant_mode_channel;
+    wifi_channel instant_mode_channel;
+
+    /*
+       Enable/Disable unsync service discovery.
+       0 - Disable
+       1 - Enable
+    */
+    u8 config_unsync_srvdsc;
+    u8 enable_unsync_srvdsc;
+
+    /*
+      Configure regulatory information.
+    */
+    u8 config_reg_info;
+    u8 reg_info_val;
+} NanEnableRequest;
+
+/*
+  NAN pairing config.
+*/
+typedef struct {
+
+    /*
+      Enable Nan pairing setup
+    */
+    u32 enable_pairing_setup;
+
+    /*
+      Enable cache NIK/NPK after Nan pairing setup
+    */
+    u32 enable_pairing_cache;
+
+    /*
+      Enable Nan pairing verification with cached NIK/NPK
+    */
+    u32 enable_pairing_verification;
+
+    /*
+      The set of supported bootstrapping methods.
+    */
+    u16 supported_bootstrapping_methods;
+} NanPairingConfig;
+
+/*
+  Publish Msg Structure
+  Message is used to request the DE to publish the Service Name
+  using the parameters passed into the Discovery Window
+*/
+typedef struct {
+    u16 publish_id;/* id  0 means new publish, any other id is existing publish */
+    u16 ttl; /* how many seconds to run for. 0 means forever until canceled */
+    /*
+       period: Awake DW Interval for publish(service)
+       Indicates the interval between two Discovery Windows in which
+       the device supporting the service is awake to transmit or
+       receive the Service Discovery frames.
+       Valid values of Awake DW Interval are: 1, 2, 4, 8 and 16, value 0 will
+       default to 1.
+    */
+    u16 period;
+    NanPublishType publish_type;/* 0= unsolicited, solicited = 1, 2= both */
+    NanTxType tx_type; /* 0 = broadcast, 1= unicast  if solicited publish */
+    u8 publish_count; /* number of OTA Publish, 0 means forever until canceled */
+    u16 service_name_len; /* length of service name */
+    u8 service_name[NAN_MAX_SERVICE_NAME_LEN];/* UTF-8 encoded string identifying the service */
+    /*
+       Field which specifies how the matching indication to host is controlled.
+       0 - Match and Indicate Once
+       1 - Match and Indicate continuous
+       2 - Match and Indicate never. This means don't indicate the match to the host.
+       3 - Reserved
+    */
+    NanMatchAlg publish_match_indicator;
+
+    /*
+       Sequence of values
+       NAN Device that has invoked a Subscribe method corresponding to this Publish method
+    */
+    u16 service_specific_info_len;
+    u8 service_specific_info[NAN_MAX_SERVICE_SPECIFIC_INFO_LEN];
+
+    /*
+       Ordered sequence of <length, value> pairs which specify further response conditions
+       beyond the service name used to filter subscribe messages to respond to.
+       This is only needed when the PT is set to NAN_SOLICITED or NAN_SOLICITED_UNSOLICITED.
+    */
+    u16 rx_match_filter_len;
+    u8 rx_match_filter[NAN_MAX_MATCH_FILTER_LEN];
+
+    /*
+       Ordered sequence of <length, value> pairs to be included in the Discovery Frame.
+       If present it is always sent in a Discovery Frame
+    */
+    u16 tx_match_filter_len;
+    u8 tx_match_filter[NAN_MAX_MATCH_FILTER_LEN];
+
+    /*
+       flag which specifies that the Publish should use the configured RSSI
+       threshold and the received RSSI in order to filter requests
+       0 – ignore the configured RSSI threshold when running a Service
+           Descriptor attribute or Service ID List Attribute through the DE matching logic.
+       1 – use the configured RSSI threshold when running a Service
+           Descriptor attribute or Service ID List Attribute through the DE matching logic.
+
+    */
+    u8 rssi_threshold_flag;
+
+    /*
+       8-bit bitmap which allows the Host to associate this publish
+       with a particular Post-NAN Connectivity attribute
+       which has been sent down in a NanConfigureRequest/NanEnableRequest
+       message.  If the DE fails to find a configured Post-NAN
+       connectivity attributes referenced by the bitmap,
+       the DE will return an error code to the Host.
+       If the Publish is configured to use a Post-NAN Connectivity
+       attribute and the Host does not refresh the Post-NAN Connectivity
+       attribute the Publish will be canceled and the Host will be sent
+       a PublishTerminatedIndication message.
+    */
+    u8 connmap;
+    /*
+      Set/Enable corresponding bits to disable any indications that follow a publish.
+      BIT0 - Disable publish termination indication.
+      BIT1 - Disable match expired indication.
+      BIT2 - Disable followUp indication received (OTA).
+      BIT3 - Disable publishReplied indication.
+    */
+    u8 recv_indication_cfg;
+    /*
+      Nan accept policy for the specific service(publish)
+    */
+    NanServiceAcceptPolicy service_responder_policy;
+    /* NAN Cipher Suite Type */
+    u32 cipher_type;
+    /*
+       Nan Security Key Info is optional in Discovery phase.
+       PMK or passphrase info can be passed during
+       the NDP session.
+    */
+    NanSecurityKeyInfo key_info;
+
+    /* Security Context Identifiers length */
+    u32 scid_len;
+    /*
+       Security Context Identifier attribute contains PMKID
+       shall be included in NDP setup and response messages.
+       Security Context Identifier, Identifies the Security
+       Context. For NAN Shared Key Cipher Suite, this field
+       contains the 16 octet PMKID identifying the PMK used
+       for setting up the Secure Data Path.
+    */
+    u8 scid[NAN_MAX_SCID_BUF_LEN];
+
+    /* NAN configure service discovery extended attributes */
+    NanSdeaCtrlParams sdea_params;
+
+    /* NAN Ranging configuration */
+    NanRangingCfg ranging_cfg;
+
+    /* Enable/disable NAN serivce Ranging auto response mode */
+    NanRangingAutoResponse ranging_auto_response;
+
+    /*
+      When the ranging_auto_response_cfg is not set, NanRangeRequestInd is
+      received. Nan Range Response to Peer MAC Addr is notified to indicate
+      ACCEPT/REJECT/CANCEL to the requestor.
+    */
+    NanRangeResponseCfg range_response_cfg;
+
+    /*
+       Sequence of values indicating the service specific info in SDEA
+    */
+    u16 sdea_service_specific_info_len;
+    u8 sdea_service_specific_info[NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN];
+
+    /*
+       The Identity key for pairing, used to generate NIRA
+    */
+    u8 nan_identity_key[NAN_IDENTITY_KEY_LEN];
+
+    /*
+      The config for Nan pairing
+    */
+    NanPairingConfig nan_pairing_config;
+
+    /*
+      Specifies whether suspension can be possible in this publish session.
+      The request would fail if enable_suspendability is true but
+      is_suspension_supported is false in NanCapabilities.
+    */
+    bool enable_suspendability;
+
+    /* s3 capabilities */
+    u16 s3_capabilities;
+
+    /* cipher capabilities */
+    u8 cipher_capabilities;
+} NanPublishRequest;
+
+/*
+  Publish Cancel Msg Structure
+  The PublishServiceCancelReq Message is used to request the DE to stop publishing
+  the Service Name identified by the Publish Id in the message.
+*/
+typedef struct {
+    u16 publish_id;
+} NanPublishCancelRequest;
+
+/*
+  NAN Subscribe Structure
+  The SubscribeServiceReq message is sent to the Discovery Engine
+  whenever the Upper layers would like to listen for a Service Name
+*/
+typedef struct {
+    u16 subscribe_id; /* id 0 means new subscribe, non zero is existing subscribe */
+    u16 ttl; /* how many seconds to run for. 0 means forever until canceled */
+    /*
+       period: Awake DW Interval for subscribe(service)
+       Indicates the interval between two Discovery Windows in which
+       the device supporting the service is awake to transmit or
+       receive the Service Discovery frames.
+       Valid values of Awake DW Interval are: 1, 2, 4, 8 and 16, value 0 will
+       default to 1.
+    */
+    u16 period;
+
+    /* Flag which specifies how the Subscribe request shall be processed. */
+    NanSubscribeType subscribe_type; /* 0 - PASSIVE , 1- ACTIVE */
+
+    /* Flag which specifies on Active Subscribes how the Service Response Filter attribute is populated.*/
+    NanSRFType serviceResponseFilter; /* 0 - Bloom Filter, 1 - MAC Addr */
+
+    /* Flag which specifies how the Service Response Filter Include bit is populated.*/
+    NanSRFIncludeType serviceResponseInclude; /* 0=Do not respond if in the Address Set, 1= Respond */
+
+    /* Flag which specifies if the Service Response Filter should be used when creating Subscribes.*/
+    NanSRFState useServiceResponseFilter; /* 0=Do not send the Service Response Filter,1= send */
+
+    /*
+       Flag which specifies if the Service Specific Info is needed in
+       the Publish message before creating the MatchIndication
+    */
+    NanSsiInMatchInd ssiRequiredForMatchIndication; /* 0=Not needed, 1= Required */
+
+    /*
+       Field which specifies how the matching indication to host is controlled.
+       0 - Match and Indicate Once
+       1 - Match and Indicate continuous
+       2 - Match and Indicate never. This means don't indicate the match to the host.
+       3 - Reserved
+    */
+    NanMatchAlg subscribe_match_indicator;
+
+    /*
+       The number of Subscribe Matches which should occur
+       before the Subscribe request is automatically terminated.
+    */
+    u8 subscribe_count; /* If this value is 0 this field is not used by the DE.*/
+
+    u16 service_name_len;/* length of service name */
+    u8 service_name[NAN_MAX_SERVICE_NAME_LEN]; /* UTF-8 encoded string identifying the service */
+
+    /* Sequence of values which further specify the published service beyond the service name*/
+    u16 service_specific_info_len;
+    u8 service_specific_info[NAN_MAX_SERVICE_SPECIFIC_INFO_LEN];
+
+    /*
+       Ordered sequence of <length, value> pairs used to filter out received publish discovery messages.
+       This can be sent both for a Passive or an Active Subscribe
+    */
+    u16 rx_match_filter_len;
+    u8 rx_match_filter[NAN_MAX_MATCH_FILTER_LEN];
+
+    /*
+       Ordered sequence of <length, value> pairs  included in the
+       Discovery Frame when an Active Subscribe is used.
+    */
+    u16 tx_match_filter_len;
+    u8 tx_match_filter[NAN_MAX_MATCH_FILTER_LEN];
+
+    /*
+       Flag which specifies that the Subscribe should use the configured RSSI
+       threshold and the received RSSI in order to filter requests
+       0 – ignore the configured RSSI threshold when running a Service
+           Descriptor attribute or Service ID List Attribute through the DE matching logic.
+       1 – use the configured RSSI threshold when running a Service
+           Descriptor attribute or Service ID List Attribute through the DE matching logic.
+
+    */
+    u8 rssi_threshold_flag;
+
+    /*
+       8-bit bitmap which allows the Host to associate this Active
+       Subscribe with a particular Post-NAN Connectivity attribute
+       which has been sent down in a NanConfigureRequest/NanEnableRequest
+       message.  If the DE fails to find a configured Post-NAN
+       connectivity attributes referenced by the bitmap,
+       the DE will return an error code to the Host.
+       If the Subscribe is configured to use a Post-NAN Connectivity
+       attribute and the Host does not refresh the Post-NAN Connectivity
+       attribute the Subscribe will be canceled and the Host will be sent
+       a SubscribeTerminatedIndication message.
+    */
+    u8 connmap;
+    /*
+       NAN Interface Address, conforming to the format as described in
+       8.2.4.3.2 of IEEE Std. 802.11-2012.
+    */
+    u8 num_intf_addr_present;
+    u8 intf_addr[NAN_MAX_SUBSCRIBE_MAX_ADDRESS][NAN_MAC_ADDR_LEN];
+    /*
+      Set/Enable corresponding bits to disable indications that follow a subscribe.
+      BIT0 - Disable subscribe termination indication.
+      BIT1 - Disable match expired indication.
+      BIT2 - Disable followUp indication received (OTA).
+    */
+    u8 recv_indication_cfg;
+
+    /* NAN Cipher Suite Type */
+    u32 cipher_type;
+    /*
+       Nan Security Key Info is optional in Discovery phase.
+       PMK or passphrase info can be passed during
+       the NDP session.
+    */
+    NanSecurityKeyInfo key_info;
+
+    /* Security Context Identifiers length */
+    u32 scid_len;
+    /*
+       Security Context Identifier attribute contains PMKID
+       shall be included in NDP setup and response messages.
+       Security Context Identifier, Identifies the Security
+       Context. For NAN Shared Key Cipher Suite, this field
+       contains the 16 octet PMKID identifying the PMK used
+       for setting up the Secure Data Path.
+    */
+    u8 scid[NAN_MAX_SCID_BUF_LEN];
+
+    /* NAN configure service discovery extended attributes */
+    NanSdeaCtrlParams sdea_params;
+
+    /* NAN Ranging configuration */
+    NanRangingCfg ranging_cfg;
+
+    /* Enable/disable NAN serivce Ranging auto response mode */
+    NanRangingAutoResponse ranging_auto_response;
+
+    /*
+      When the ranging_auto_response_cfg is not set, NanRangeRequestInd is
+      received. Nan Range Response to Peer MAC Addr is notified to indicate
+      ACCEPT/REJECT/CANCEL to the requestor.
+    */
+    NanRangeResponseCfg range_response_cfg;
+
+    /*
+       Sequence of values indicating the service specific info in SDEA
+    */
+    u16 sdea_service_specific_info_len;
+    u8 sdea_service_specific_info[NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN];
+    /*
+       The Identity key for pairing, used to generate NIRA
+    */
+    u8 nan_identity_key[NAN_IDENTITY_KEY_LEN];
+
+    /*
+      The config for Nan pairing
+    */
+    NanPairingConfig nan_pairing_config;
+
+    /*
+      Specifies whether suspension can be possible in this subscribe session.
+      The request would fail if enable_suspendability is true but
+      is_suspension_supported is false in NanCapabilities.
+    */
+    bool enable_suspendability;
+
+    /* cipher capabilities */
+    u8 cipher_capabilities;
+} NanSubscribeRequest;
+
+/*
+  NAN Subscribe Cancel Structure
+  The SubscribeCancelReq Message is used to request the DE to stop looking for the Service Name.
+*/
+typedef struct {
+    u16 subscribe_id;
+} NanSubscribeCancelRequest;
+
+/*
+  Transmit follow up Structure
+  The TransmitFollowupReq message is sent to the DE to allow the sending of the Service_Specific_Info
+  to a particular MAC address.
+*/
+typedef struct {
+    /* Publish or Subscribe Id of an earlier Publish/Subscribe */
+    u16 publish_subscribe_id;
+
+    /*
+       This Id is the Requestor Instance that is passed as
+       part of earlier MatchInd/FollowupInd message.
+    */
+    u32 requestor_instance_id;
+    u8 addr[NAN_MAC_ADDR_LEN]; /* Unicast address */
+    NanTxPriority priority; /* priority of the request 2=high */
+    NanTransmitWindowType dw_or_faw; /* 0= send in a DW, 1=send in FAW */
+
+    /*
+       Sequence of values which further specify the published service beyond
+       the service name.
+    */
+    u16 service_specific_info_len;
+    u8 service_specific_info[NAN_MAX_SERVICE_SPECIFIC_INFO_LEN];
+    /*
+      Set/Enable corresponding bits to disable responses after followUp.
+      BIT0 - Disable followUp response from FW.
+    */
+    u8 recv_indication_cfg;
+
+    /*
+       Sequence of values indicating the service specific info in SDEA
+    */
+    u16 sdea_service_specific_info_len;
+    u8 sdea_service_specific_info[NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN];
+
+    /*
+       Add shared key descriptor attribute to the Followup request when the
+       flag is set
+    */
+    u8 shared_key_desc_flag;
+} NanTransmitFollowupRequest;
+
+/*
+  Stats Request structure
+  The Discovery Engine can be queried at runtime by the Host processor for statistics
+  concerning various parts of the Discovery Engine.
+*/
+typedef struct {
+    NanStatsType stats_type; /* NAN Statistics Request Type */
+    u8 clear; /* 0= Do not clear the stats and return the current contents , 1= Clear the associated stats  */
+} NanStatsRequest;
+
+/*
+  Suspend Request Structure
+  The SuspendRequest message is used to request that the specified session is suspended.
+  The session can be resumed using the NanResumeRequest message.
+*/
+typedef struct {
+    u16 publish_subscribe_id;
+} NanSuspendRequest;
+
+/*
+  Resume Request Structure
+  The ResumeRequest message is used to request that the specified session is resumed.
+*/
+typedef struct {
+    u16 publish_subscribe_id;
+} NanResumeRequest;
+
+/*
+  Config Structure
+  The NanConfigurationReq message is sent by the Host to the
+  Discovery Engine in order to configure the Discovery Engine during runtime.
+*/
+typedef struct {
+    u8 config_sid_beacon;
+    u8 sid_beacon;
+    u8 config_rssi_proximity;
+    u8 rssi_proximity; // default value -60dBm
+    u8 config_master_pref;
+    u8 master_pref; // default value 0x02
+    /*
+       1 byte value which defines the RSSI filter threshold.
+       Any Service Descriptors received above this value
+       that are configured for RSSI filtering will be dropped.
+       The rssi values should be specified without sign.
+       For eg: -70dBm should be specified as 70.
+    */
+    u8 config_5g_rssi_close_proximity;
+    u8 rssi_close_proximity_5g_val;  // default value -60dBm
+    /*
+      Optional configuration of Configure request.
+      Each of the optional parameters have configure flag which
+      determine whether configuration is to be passed or not.
+    */
+    /*
+       1 byte quantity which defines the window size over
+       which the “average RSSI” will be calculated over.
+    */
+    u8 config_rssi_window_size;
+    u8 rssi_window_size_val; // default value 0x08
+    /*
+       If set to 1, the Discovery Engine will enclose the Cluster
+       Attribute only sent in Beacons in a Vendor Specific Attribute
+       and transmit in a Service Descriptor Frame.
+    */
+    u8 config_cluster_attribute_val;
+    /*
+      The periodicity in seconds between full scan’s to find any new
+      clusters available in the area.  A Full scan should not be done
+      more than every 10 seconds and should not be done less than every
+      30 seconds.
+    */
+    u8 config_scan_params;
+    NanSocialChannelScanParams scan_params_val;
+    /*
+       1 byte quantity which forces the Random Factor to a particular
+       value for all transmitted Sync/Discovery beacons
+    */
+    u8 config_random_factor_force;
+    u8 random_factor_force_val; // default value 0x00
+    /*
+       1 byte quantity which forces the HC for all transmitted Sync and
+       Discovery Beacon NO matter the real HC being received over the
+       air.
+    */
+    u8 config_hop_count_force;
+    u8 hop_count_force_val; // default value of 0
+    /* NAN Post Connectivity Capability */
+    u8 config_conn_capability;
+    NanTransmitPostConnectivityCapability conn_capability_val;
+    /* NAN Post Discover Capability */
+    u8 num_config_discovery_attr;
+    NanTransmitPostDiscovery discovery_attr_val[NAN_MAX_POSTDISCOVERY_LEN];
+    /* NAN Further availability Map */
+    u8 config_fam;
+    NanFurtherAvailabilityMap fam_val;
+    /* Configure 2.4/5GHz DW */
+    NanConfigDW config_dw;
+    /*
+       By default discovery MAC address randomization is enabled
+       and default interval value is 30 minutes i.e. 1800 seconds.
+       The value 0 is used to disable MAC addr randomization.
+    */
+    u8 config_disc_mac_addr_randomization;
+    u32 disc_mac_addr_rand_interval_sec; // default value of 30 minutes
+
+    /*
+      Set/Enable corresponding bits to disable Discovery indications:
+      BIT0 - Disable Discovery MAC Address Event.
+      BIT1 - Disable Started Cluster Event.
+      BIT2 - Disable Joined Cluster Event.
+    */
+    u8 discovery_indication_cfg; // default value of 0
+    /*
+       BIT 0 is used to specify to include Service IDs in Sync/Discovery beacons
+       0 - Do not include SIDs in any beacons
+       1 - Include SIDs in all beacons.
+       Rest 7 bits are count field which allows control over the number of SIDs
+       included in the Beacon.  0 means to include as many SIDs that fit into
+       the maximum allow Beacon frame size
+    */
+    u8 config_subscribe_sid_beacon;
+    u32 subscribe_sid_beacon_val; // default value 0x0
+    /*
+       Discovery Beacon Interval config.
+       Default value is 128 msec in 2G DW and 176 msec in 2G/5G DW.
+       When 0 value is passed it is reset to default value of 128 or 176 msec.
+    */
+    u8 config_discovery_beacon_int;
+    u32 discovery_beacon_interval;
+    /*
+       Enable Number of Spatial Streams.
+       This is NAN Power Optimization feature for NAN discovery.
+    */
+    u8 config_nss;
+    // default value is implementation specific and passing 0 sets it to default
+    u32 nss;
+    /*
+       Enable device level NAN Ranging feature.
+       0 - Disable
+       1 - Enable
+    */
+    u8 config_enable_ranging;
+    u32 enable_ranging;
+    /*
+       Enable/Disable DW Early termination.
+       0 - Disable
+       1 - Enable
+    */
+    u8 config_dw_early_termination;
+    u32 enable_dw_termination;
+    /*
+       Indicate whether to use NDPE attribute to bring-up TCP/IP connection
+       If config_ndpe_attr is not configured, the default behavior is
+       not using NDPE attr, and the capability is not advertised.
+       0 - Not use
+       1 - Use
+    */
+    u8 config_ndpe_attr;
+    u32 use_ndpe_attr;
+    /*
+            Enable NAN v3.1 instant communication mode.
+            0 - Disable
+            1 - Enable
+    */
+    u8 config_enable_instant_mode;
+    u32 enable_instant_mode;
+    /*
+        Config NAN v3.1 instant communication channel selected over NFC/OOB method.
+        If dual band is supported default channel is 149 or 44 as per regulatory domain,
+        else channel 6 (send frequency in MHz).
+        Sometimes depending on country code retrictions, even 149/44 may be restricted
+        in those cases instant channel will be operational only in 2.4GHz.
+        Use wifi_get_usable_channels() API to get supported bands/channels before
+        Instant mode NFC handshake is triggered
+    */
+    u8 config_instant_mode_channel;
+    wifi_channel instant_mode_channel;
+    /*
+       Config cluster ID with the cluster ID selected over NFC/OOB method.
+    */
+    u8 config_cluster_id;
+    u16 cluster_id_val; // default value 0x0
+} NanConfigRequest;
+
+/*
+  TCA Structure
+  The Discovery Engine can be configured to send up Events whenever a configured
+  Threshold Crossing Alert (TCA) Type crosses an integral threshold in a particular direction.
+*/
+typedef struct {
+    NanTcaType tca_type; /* Nan Protocol Threshold Crossing Alert (TCA) Codes */
+
+    /* flag which control whether or not an event is generated for the Rising direction */
+    u8 rising_direction_evt_flag; /* 0 - no event, 1 - event */
+
+    /* flag which control whether or not an event is generated for the Falling direction */
+    u8 falling_direction_evt_flag;/* 0 - no event, 1 - event */
+
+    /* flag which requests a previous TCA request to be cleared from the DE */
+    u8 clear;/*0= Do not clear the TCA, 1=Clear the TCA */
+
+    /* 32 bit value which represents the threshold to be used.*/
+    u32 threshold;
+} NanTCARequest;
+
+/*
+  Beacon Sdf Payload Structure
+  The Discovery Engine can be configured to publish vendor specific attributes as part of
+  beacon or service discovery frame transmitted as part of this request..
+*/
+typedef struct {
+    /*
+       NanVendorAttribute will have the Vendor Specific Attribute which the
+       vendor wants to publish as part of Discovery or Sync or Service discovery frame
+    */
+    NanTransmitVendorSpecificAttribute vsa;
+} NanBeaconSdfPayloadRequest;
+
+/* Publish statistics. */
+typedef struct
+{
+    u32 validPublishServiceReqMsgs;
+    u32 validPublishServiceRspMsgs;
+    u32 validPublishServiceCancelReqMsgs;
+    u32 validPublishServiceCancelRspMsgs;
+    u32 validPublishRepliedIndMsgs;
+    u32 validPublishTerminatedIndMsgs;
+    u32 validActiveSubscribes;
+    u32 validMatches;
+    u32 validFollowups;
+    u32 invalidPublishServiceReqMsgs;
+    u32 invalidPublishServiceCancelReqMsgs;
+    u32 invalidActiveSubscribes;
+    u32 invalidMatches;
+    u32 invalidFollowups;
+    u32 publishCount;
+    u32 publishNewMatchCount;
+    u32 pubsubGlobalNewMatchCount;
+} NanPublishStats;
+
+/* Subscribe statistics. */
+typedef struct
+{
+    u32 validSubscribeServiceReqMsgs;
+    u32 validSubscribeServiceRspMsgs;
+    u32 validSubscribeServiceCancelReqMsgs;
+    u32 validSubscribeServiceCancelRspMsgs;
+    u32 validSubscribeTerminatedIndMsgs;
+    u32 validSubscribeMatchIndMsgs;
+    u32 validSubscribeUnmatchIndMsgs;
+    u32 validSolicitedPublishes;
+    u32 validMatches;
+    u32 validFollowups;
+    u32 invalidSubscribeServiceReqMsgs;
+    u32 invalidSubscribeServiceCancelReqMsgs;
+    u32 invalidSubscribeFollowupReqMsgs;
+    u32 invalidSolicitedPublishes;
+    u32 invalidMatches;
+    u32 invalidFollowups;
+    u32 subscribeCount;
+    u32 bloomFilterIndex;
+    u32 subscribeNewMatchCount;
+    u32 pubsubGlobalNewMatchCount;
+} NanSubscribeStats;
+
+/* NAN DW Statistics*/
+typedef struct
+{
+    /* RX stats */
+    u32 validFrames;
+    u32 validActionFrames;
+    u32 validBeaconFrames;
+    u32 ignoredActionFrames;
+    u32 ignoredBeaconFrames;
+    u32 invalidFrames;
+    u32 invalidActionFrames;
+    u32 invalidBeaconFrames;
+    u32 invalidMacHeaders;
+    u32 invalidPafHeaders;
+    u32 nonNanBeaconFrames;
+
+    u32 earlyActionFrames;
+    u32 inDwActionFrames;
+    u32 lateActionFrames;
+
+    /* TX stats */
+    u32 framesQueued;
+    u32 totalTRSpUpdates;
+    u32 completeByTRSp;
+    u32 completeByTp75DW;
+    u32 completeByTendDW;
+    u32 lateActionFramesTx;
+} NanDWStats;
+
+/* NAN MAC Statistics. */
+typedef struct
+{
+    /* RX stats */
+    u32 validFrames;
+    u32 validActionFrames;
+    u32 validBeaconFrames;
+    u32 ignoredActionFrames;
+    u32 ignoredBeaconFrames;
+    u32 invalidFrames;
+    u32 invalidActionFrames;
+    u32 invalidBeaconFrames;
+    u32 invalidMacHeaders;
+    u32 invalidPafHeaders;
+    u32 nonNanBeaconFrames;
+
+    u32 earlyActionFrames;
+    u32 inDwActionFrames;
+    u32 lateActionFrames;
+
+    /* TX stats */
+    u32 framesQueued;
+    u32 totalTRSpUpdates;
+    u32 completeByTRSp;
+    u32 completeByTp75DW;
+    u32 completeByTendDW;
+    u32 lateActionFramesTx;
+
+    u32 twIncreases;
+    u32 twDecreases;
+    u32 twChanges;
+    u32 twHighwater;
+    u32 bloomFilterIndex;
+} NanMacStats;
+
+/* NAN Sync Statistics*/
+typedef struct
+{
+    u64 currTsf;
+    u64 myRank;
+    u64 currAmRank;
+    u64 lastAmRank;
+    u32 currAmBTT;
+    u32 lastAmBTT;
+    u8  currAmHopCount;
+    u8  currRole;
+    u16 currClusterId;
+
+    u64 timeSpentInCurrRole;
+    u64 totalTimeSpentAsMaster;
+    u64 totalTimeSpentAsNonMasterSync;
+    u64 totalTimeSpentAsNonMasterNonSync;
+    u32 transitionsToAnchorMaster;
+    u32 transitionsToMaster;
+    u32 transitionsToNonMasterSync;
+    u32 transitionsToNonMasterNonSync;
+    u32 amrUpdateCount;
+    u32 amrUpdateRankChangedCount;
+    u32 amrUpdateBTTChangedCount;
+    u32 amrUpdateHcChangedCount;
+    u32 amrUpdateNewDeviceCount;
+    u32 amrExpireCount;
+    u32 mergeCount;
+    u32 beaconsAboveHcLimit;
+    u32 beaconsBelowRssiThresh;
+    u32 beaconsIgnoredNoSpace;
+    u32 beaconsForOurCluster;
+    u32 beaconsForOtherCluster;
+    u32 beaconCancelRequests;
+    u32 beaconCancelFailures;
+    u32 beaconUpdateRequests;
+    u32 beaconUpdateFailures;
+    u32 syncBeaconTxAttempts;
+    u32 syncBeaconTxFailures;
+    u32 discBeaconTxAttempts;
+    u32 discBeaconTxFailures;
+    u32 amHopCountExpireCount;
+    u32 ndpChannelFreq;
+    u32 ndpChannelFreq2;
+    u32 schedUpdateChannelFreq;
+} NanSyncStats;
+
+/* NAN Misc DE Statistics */
+typedef struct
+{
+    u32 validErrorRspMsgs;
+    u32 validTransmitFollowupReqMsgs;
+    u32 validTransmitFollowupRspMsgs;
+    u32 validFollowupIndMsgs;
+    u32 validConfigurationReqMsgs;
+    u32 validConfigurationRspMsgs;
+    u32 validStatsReqMsgs;
+    u32 validStatsRspMsgs;
+    u32 validEnableReqMsgs;
+    u32 validEnableRspMsgs;
+    u32 validDisableReqMsgs;
+    u32 validDisableRspMsgs;
+    u32 validDisableIndMsgs;
+    u32 validEventIndMsgs;
+    u32 validTcaReqMsgs;
+    u32 validTcaRspMsgs;
+    u32 validTcaIndMsgs;
+    u32 invalidTransmitFollowupReqMsgs;
+    u32 invalidConfigurationReqMsgs;
+    u32 invalidStatsReqMsgs;
+    u32 invalidEnableReqMsgs;
+    u32 invalidDisableReqMsgs;
+    u32 invalidTcaReqMsgs;
+} NanDeStats;
+
+/* Publish Response Message structure */
+typedef struct {
+    u16 publish_id;
+} NanPublishResponse;
+
+/* Subscribe Response Message structure */
+typedef struct {
+    u16 subscribe_id;
+} NanSubscribeResponse;
+
+/*
+  Stats Response Message structure
+  The Discovery Engine response to a request by the Host for statistics.
+*/
+typedef struct {
+    NanStatsType stats_type;
+    union {
+        NanPublishStats publish_stats;
+        NanSubscribeStats subscribe_stats;
+        NanMacStats mac_stats;
+        NanSyncStats sync_stats;
+        NanDeStats de_stats;
+        NanDWStats dw_stats;
+    } data;
+} NanStatsResponse;
+
+/* Response returned for Initiators Data request */
+typedef struct {
+    /*
+      Unique token Id generated on the initiator
+      side used for a NDP session between two NAN devices
+    */
+    NanDataPathId ndp_instance_id;
+} NanDataPathRequestResponse;
+
+/* Response returned for Initiators pairing request */
+typedef struct {
+    /*
+      Unique token Id generated on the initiator
+      side used for a pairing session between two NAN devices
+    */
+    u32 paring_instance_id;
+} NanPairingRequestResponse;
+
+/* Response returned for Initiators bootstrapping request */
+typedef struct {
+    /*
+      Unique token Id generated on the initiator
+      side used for a bootstrapping session between two NAN devices
+    */
+    u32 bootstrapping_instance_id;
+} NanBootstrappingRequestResponse;
+
+/*
+  NAN Response messages
+*/
+typedef struct {
+    NanStatusType status; /* contains the result code */
+    char nan_error[NAN_ERROR_STR_LEN]; /* Describe the NAN error type */
+    NanResponseType response_type; /* NanResponseType Definitions */
+    union {
+        NanPublishResponse publish_response;
+        NanSubscribeResponse subscribe_response;
+        NanStatsResponse stats_response;
+        NanDataPathRequestResponse data_request_response;
+        NanCapabilities nan_capabilities;
+        NanPairingRequestResponse pairing_request_response;
+        NanBootstrappingRequestResponse bootstrapping_request_response;
+    } body;
+} NanResponseMsg;
+
+/*
+  Publish Replied Indication
+  The PublishRepliedInd Message is sent by the DE when an Active Subscribe is
+  received over the air and it matches a Solicited PublishServiceReq which had
+  been created with the replied_event_flag set.
+*/
+typedef struct {
+    /*
+       A 32 bit Requestor Instance Id which is sent to the Application.
+       This Id will be sent in any subsequent UnmatchInd/FollowupInd
+       messages
+    */
+    u32 requestor_instance_id;
+    u8 addr[NAN_MAC_ADDR_LEN];
+    /*
+       If RSSI filtering was configured in NanPublishRequest then this
+       field will contain the received RSSI value. 0 if not
+    */
+    u8 rssi_value;
+} NanPublishRepliedInd;
+
+/*
+  Publish Terminated
+  The PublishTerminatedInd message is sent by the DE whenever a Publish
+  terminates from a user-specified timeout or a unrecoverable error in the DE.
+*/
+typedef struct {
+    /* Id returned during the initial Publish */
+    u16 publish_id;
+    /*
+      For all user configured termination NAN_STATUS_SUCCESS
+      and no other reasons expected from firmware.
+    */
+    NanStatusType reason;
+    char nan_reason[NAN_ERROR_STR_LEN]; /* Describe the NAN reason type */
+} NanPublishTerminatedInd;
+
+/* The NIRA used to identify the pairing devices*/
+typedef struct {
+    u8 nonce[NAN_IDENTITY_NONCE_LEN];
+    u8 tag[NAN_IDENTITY_TAG_LEN];
+} NanIdentityResolutionAttribute;
+
+/*
+  Match Indication
+  The MatchInd message is sent once per responding MAC address whenever
+  the Discovery Engine detects a match for a previous SubscribeServiceReq
+  or PublishServiceReq.
+*/
+typedef struct {
+    /* Publish or Subscribe Id of an earlier Publish/Subscribe */
+    u16 publish_subscribe_id;
+    /*
+       A 32 bit Requestor Instance Id which is sent to the Application.
+       This Id will be sent in any subsequent UnmatchInd/FollowupInd
+       messages
+    */
+    u32 requestor_instance_id;
+    u8 addr[NAN_MAC_ADDR_LEN];
+
+    /*
+       Sequence of octets which were received in a Discovery Frame matching the
+       Subscribe Request.
+    */
+    u16 service_specific_info_len;
+    u8 service_specific_info[NAN_MAX_SERVICE_SPECIFIC_INFO_LEN];
+
+    /*
+       Ordered sequence of <length, value> pairs received in the Discovery Frame
+       matching the Subscribe Request.
+    */
+    u16 sdf_match_filter_len;
+    u8 sdf_match_filter[NAN_MAX_MATCH_FILTER_LEN];
+
+    /*
+       flag to indicate if the Match occurred in a Beacon Frame or in a
+       Service Discovery Frame.
+         0 - Match occured in a Service Discovery Frame
+         1 - Match occured in a Beacon Frame
+    */
+    u8 match_occured_flag;
+
+    /*
+       flag to indicate FW is out of resource and that it can no longer
+       track this Service Name. The Host still need to send the received
+       Match_Handle but duplicate MatchInd messages may be received on
+       this Handle until the resource frees up.
+         0 - FW is caching this match
+         1 - FW is unable to cache this match
+    */
+    u8 out_of_resource_flag;
+
+    /*
+       If RSSI filtering was configured in NanSubscribeRequest then this
+       field will contain the received RSSI value. 0 if not.
+       All rssi values should be specified without sign.
+       For eg: -70dBm should be specified as 70.
+    */
+    u8 rssi_value;
+
+    /*
+       optional attributes. Each optional attribute is associated with a flag
+       which specifies whether the attribute is valid or not
+    */
+    /* NAN Post Connectivity Capability received */
+    u8 is_conn_capability_valid;
+    NanReceivePostConnectivityCapability conn_capability;
+
+    /* NAN Post Discover Capability */
+    u8 num_rx_discovery_attr;
+    NanReceivePostDiscovery discovery_attr[NAN_MAX_POSTDISCOVERY_LEN];
+
+    /* NAN Further availability Map */
+    u8 num_chans;
+    NanFurtherAvailabilityChannel famchan[NAN_MAX_FAM_CHANNELS];
+
+    /* NAN Cluster Attribute */
+    u8 cluster_attribute_len;
+    u8 cluster_attribute[NAN_MAX_CLUSTER_ATTRIBUTE_LEN];
+
+    /* NAN Cipher Suite */
+    u32 peer_cipher_type;
+
+    /* Security Context Identifiers length */
+    u32 scid_len;
+    /*
+       Security Context Identifier attribute contains PMKID
+       shall be included in NDP setup and response messages.
+       Security Context Identifier, Identifies the Security
+       Context. For NAN Shared Key Cipher Suite, this field
+       contains the 16 octet PMKID identifying the PMK used
+       for setting up the Secure Data Path.
+    */
+    u8 scid[NAN_MAX_SCID_BUF_LEN];
+
+    /* Peer service discovery extended attributes */
+    NanSdeaCtrlParams peer_sdea_params;
+
+    /*
+      Ranging indication and NanMatchAlg are not tied.
+      Ex: NanMatchAlg can indicate Match_ONCE, but ranging
+      indications can be continuous. All ranging indications
+      depend on SDEA control parameters of ranging required for
+      continuous, and ingress/egress values in the ranging config.
+      Ranging indication data is notified if:
+      1) Ranging required is enabled in SDEA.
+         range info notified continuous.
+      2) if range_limit ingress/egress MASKS are enabled
+         notify once for ingress >= ingress_distance
+         and egress <= egress_distance, same for ingress_egress_both
+      3) if the Awake DW intervals are higher than the ranging intervals,
+         priority is given to the device DW intervalsi.
+    */
+    /*
+      Range Info includes:
+      1) distance to the NAN device with the MAC address indicated
+         with ranged mac address.
+      2) Ranging event matching the configuration of continuous/ingress/egress.
+    */
+    NanRangeInfo range_info;
+
+    /*
+       Sequence of values indicating the service specific info in SDEA
+    */
+    u16 sdea_service_specific_info_len;
+    u8 sdea_service_specific_info[NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN];
+
+    /*
+      The config for Nan pairing set by the peer
+    */
+    NanPairingConfig peer_pairing_config;
+
+    /*
+      The NIRA from peer for Nan pairing verification
+    */
+    NanIdentityResolutionAttribute nira;
+} NanMatchInd;
+
+/*
+  MatchExpired Indication
+  The MatchExpiredInd message is sent whenever the Discovery Engine detects that
+  a previously Matched Service has been gone for too long. If the previous
+  MatchInd message for this Publish/Subscribe Id had the out_of_resource_flag
+  set then this message will not be received
+*/
+typedef struct {
+    /* Publish or Subscribe Id of an earlier Publish/Subscribe */
+    u16 publish_subscribe_id;
+    /*
+       32 bit value sent by the DE in a previous
+       MatchInd/FollowupInd to the application.
+    */
+    u32 requestor_instance_id;
+} NanMatchExpiredInd;
+
+/*
+  Subscribe Terminated
+  The SubscribeTerminatedInd message is sent by the DE whenever a
+  Subscribe terminates from a user-specified timeout or a unrecoverable error in the DE.
+*/
+typedef struct {
+    /* Id returned during initial Subscribe */
+    u16 subscribe_id;
+    /*
+      For all user configured termination NAN_STATUS_SUCCESS
+      and no other reasons expected from firmware.
+    */
+    NanStatusType reason;
+    char nan_reason[NAN_ERROR_STR_LEN]; /* Describe the NAN reason type */
+} NanSubscribeTerminatedInd;
+
+/*
+  Followup Indication Message
+  The FollowupInd message is sent by the DE to the Host whenever it receives a
+  Followup message from another peer.
+*/
+typedef struct {
+    /* Publish or Subscribe Id of an earlier Publish/Subscribe */
+    u16 publish_subscribe_id;
+    /*
+       A 32 bit Requestor instance Id which is sent to the Application.
+       This Id will be used in subsequent UnmatchInd/FollowupInd messages.
+    */
+    u32 requestor_instance_id;
+    u8 addr[NAN_MAC_ADDR_LEN];
+
+    /* Flag which the DE uses to decide if received in a DW or a FAW*/
+    u8 dw_or_faw; /* 0=Received  in a DW, 1 = Received in a FAW*/
+
+    /*
+       Sequence of values which further specify the published service beyond
+       the service name
+    */
+    u16 service_specific_info_len;
+    u8 service_specific_info[NAN_MAX_SERVICE_SPECIFIC_INFO_LEN];
+
+    /*
+       Sequence of values indicating the service specific info in SDEA
+    */
+    u16 sdea_service_specific_info_len;
+    u8 sdea_service_specific_info[NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN];
+} NanFollowupInd;
+
+/*
+   Event data notifying the Mac address of the Discovery engine.
+   which is reported as one of the Discovery engine event
+*/
+typedef struct {
+    u8 addr[NAN_MAC_ADDR_LEN];
+} NanMacAddressEvent;
+
+/*
+   Event data notifying the Cluster address of the cluster
+   which is reported as one of the Discovery engine event
+*/
+typedef struct {
+    u8 addr[NAN_MAC_ADDR_LEN];
+} NanClusterEvent;
+
+/*
+  Discovery Engine Event Indication
+  The Discovery Engine can inform the Host when significant events occur
+  The data following the EventId is dependent upon the EventId type.
+  In other words, each new event defined will carry a different
+  structure of information back to the host.
+*/
+typedef struct {
+    NanDiscEngEventType event_type; /* NAN Protocol Event Codes */
+    union {
+        /*
+           MacAddressEvent which will have 6 byte mac address
+           of the Discovery engine.
+        */
+        NanMacAddressEvent mac_addr;
+        /*
+           Cluster Event Data which will be obtained when the
+           device starts a new cluster or joins a cluster.
+           The event data will have 6 byte octet string of the
+           cluster started or joined.
+        */
+        NanClusterEvent cluster;
+    } data;
+} NanDiscEngEventInd;
+
+/* Cluster size TCA event*/
+typedef struct {
+    /* size of the cluster*/
+    u32 cluster_size;
+} NanTcaClusterEvent;
+
+/*
+  NAN TCA Indication
+  The Discovery Engine can inform the Host when significant events occur.
+  The data following the TcaId is dependent upon the TcaId type.
+  In other words, each new event defined will carry a different structure
+  of information back to the host.
+*/
+typedef struct {
+    NanTcaType tca_type;
+    /* flag which defines if the configured Threshold has risen above the threshold */
+    u8 rising_direction_evt_flag; /* 0 - no event, 1 - event */
+
+    /* flag which defines if the configured Threshold has fallen below the threshold */
+    u8 falling_direction_evt_flag;/* 0 - no event, 1 - event */
+    union {
+        /*
+           This event in obtained when the cluser size threshold
+           is crossed. Event will have the cluster size
+        */
+        NanTcaClusterEvent cluster;
+    } data;
+} NanTCAInd;
+
+/*
+  NAN Disabled Indication
+  The NanDisableInd message indicates to the upper layers that the Discovery
+  Engine has flushed all state and has been shutdown.  When this message is received
+  the DE is guaranteed to have left the NAN cluster it was part of and will have terminated
+  any in progress Publishes or Subscribes.
+*/
+typedef struct {
+    /*
+      Following reasons expected:
+      NAN_STATUS_SUCCESS
+      NAN_STATUS_UNSUPPORTED_CONCURRENCY_NAN_DISABLED
+    */
+    NanStatusType reason;
+    char nan_reason[NAN_ERROR_STR_LEN]; /* Describe the NAN reason type */
+} NanDisabledInd;
+
+/*
+  NAN Beacon or SDF Payload Indication
+  The NanBeaconSdfPayloadInd message indicates to the upper layers that information
+  elements were received either in a Beacon or SDF which needs to be delivered
+  outside of a Publish/Subscribe Handle.
+*/
+typedef struct {
+    /* The MAC address of the peer which sent the attributes.*/
+    u8 addr[NAN_MAC_ADDR_LEN];
+    /*
+       Optional attributes. Each optional attribute is associated with a flag
+       which specifies whether the attribute is valid or not
+    */
+    /* NAN Receive Vendor Specific Attribute*/
+    u8 is_vsa_received;
+    NanReceiveVendorSpecificAttribute vsa;
+
+    /* NAN Beacon or SDF Payload Received*/
+    u8 is_beacon_sdf_payload_received;
+    NanBeaconSdfPayloadReceive data;
+} NanBeaconSdfPayloadInd;
+
+/*
+  Event Indication notifying the
+  transmit followup in progress
+*/
+typedef struct {
+   transaction_id id;
+   /*
+     Following reason codes returned:
+     NAN_STATUS_SUCCESS
+     NAN_STATUS_NO_OTA_ACK
+     NAN_STATUS_PROTOCOL_FAILURE
+   */
+   NanStatusType reason;
+   char nan_reason[NAN_ERROR_STR_LEN]; /* Describe the NAN reason type */
+} NanTransmitFollowupInd;
+
+/*
+  Data request Initiator/Responder
+  app/service related info
+*/
+typedef struct {
+    u16 ndp_app_info_len;
+    u8 ndp_app_info[NAN_DP_MAX_APP_INFO_LEN];
+} NanDataPathAppInfo;
+
+/* QoS configuration */
+typedef enum {
+    NAN_DP_CONFIG_NO_QOS = 0,
+    NAN_DP_CONFIG_QOS
+} NanDataPathQosCfg;
+
+/* Configuration params of Data request Initiator/Responder */
+typedef struct {
+    /* Status Indicating Security/No Security */
+    NanDataPathSecurityCfgStatus security_cfg;
+    NanDataPathQosCfg qos_cfg;
+} NanDataPathCfg;
+
+/* Nan Data Path Initiator requesting a data session */
+typedef struct {
+    /*
+     Unique Instance Id identifying the Responder's service.
+     This is same as publish_id notified on the subscribe side
+     in a publish/subscribe scenario
+    */
+    u32 requestor_instance_id; /* Value 0 for no publish/subscribe */
+
+    /* Config flag for channel request */
+    NanDataPathChannelCfg channel_request_type;
+    /* Channel frequency in MHz to start data-path */
+    wifi_channel channel;
+    /*
+      Discovery MAC addr of the publisher/peer
+    */
+    u8 peer_disc_mac_addr[NAN_MAC_ADDR_LEN];
+    /*
+     Interface name on which this NDP session is to be started.
+     This will be the same interface name provided during interface
+     create.
+    */
+    char ndp_iface[IFNAMSIZ+1];
+    /* Initiator/Responder Security/QoS configuration */
+    NanDataPathCfg ndp_cfg;
+    /* App/Service information of the Initiator */
+    NanDataPathAppInfo app_info;
+    /* NAN Cipher Suite Type */
+    u32 cipher_type;
+    /*
+       Nan Security Key Info is optional in Discovery phase.
+       PMK or passphrase info can be passed during
+       the NDP session.
+    */
+    NanSecurityKeyInfo key_info;
+    /* length of service name */
+    u32 service_name_len;
+    /*
+       UTF-8 encoded string identifying the service name.
+       The service name field is only used if a Nan discovery
+       is not associated with the NDP (out-of-band discovery).
+    */
+    u8 service_name[NAN_MAX_SERVICE_NAME_LEN];
+
+    /* Security Context Identifiers length */
+    u32 scid_len;
+    /*
+       Security Context Identifier attribute contains PMKID
+       shall be included in NDP setup and response messages.
+       Security Context Identifier, Identifies the Security
+       Context. For NAN Shared Key Cipher Suite, this field
+       contains the 16 octet PMKID identifying the PMK used
+       for setting up the Secure Data Path.
+    */
+    u8 scid[NAN_MAX_SCID_BUF_LEN];
+
+    /* Publish or Subscribe Id of an earlier Publish/Subscribe */
+    u16 publish_subscribe_id;
+
+    /* configure CSIA (Cipher Suite Information attribute) capability to specify GTK, IGTK, BIGTK
+       are supported or not
+    */
+    u8 csia_capabilities;
+
+    /* configure GTK(Group Transient Key) protection required or not */
+    u8 gtk_protection;
+
+} NanDataPathInitiatorRequest;
+
+/*
+  Data struct to initiate a data response on the responder side
+  for an indication received with a data request
+*/
+typedef struct {
+    /*
+      Unique token Id generated on the initiator/responder
+      side used for a NDP session between two NAN devices
+    */
+    NanDataPathId ndp_instance_id;
+    /*
+     Interface name on which this NDP session is to be started.
+     This will be the same interface name provided during interface
+     create.
+    */
+    char ndp_iface[IFNAMSIZ+1];
+    /* Initiator/Responder Security/QoS configuration */
+    NanDataPathCfg ndp_cfg;
+    /* App/Service information of the responder */
+    NanDataPathAppInfo app_info;
+    /* Response Code indicating ACCEPT/REJECT/DEFER */
+    NanDataPathResponseCode rsp_code;
+    /* NAN Cipher Suite Type */
+    u32 cipher_type;
+    /*
+       Nan Security Key Info is optional in Discovery phase.
+       PMK or passphrase info can be passed during
+       the NDP session.
+    */
+    NanSecurityKeyInfo key_info;
+    /* length of service name */
+    u32 service_name_len;
+    /*
+       UTF-8 encoded string identifying the service name.
+       The service name field is only used if a Nan discovery
+       is not associated with the NDP (out-of-band discovery).
+    */
+    u8 service_name[NAN_MAX_SERVICE_NAME_LEN];
+
+    /* Security Context Identifiers length */
+    u32 scid_len;
+    /*
+       Security Context Identifier attribute contains PMKID
+       shall be included in NDP setup and response messages.
+       Security Context Identifier, Identifies the Security
+       Context. For NAN Shared Key Cipher Suite, this field
+       contains the 16 octet PMKID identifying the PMK used
+       for setting up the Secure Data Path.
+    */
+    u8 scid[NAN_MAX_SCID_BUF_LEN];
+
+    /* Publish or Subscribe Id of an earlier Publish/Subscribe */
+    u16 publish_subscribe_id;
+
+    /*
+      Discovery MAC addr of the publisher/peer
+    */
+    u8 peer_disc_mac_addr[NAN_MAC_ADDR_LEN];
+
+    /* configure CSIA (Cipher Suite Information attribute) capability to specify GTK, IGTK, BIGTK
+       are supported or not
+    */
+    u8 csia_capabilities;
+
+    /* configure GTK(Group Transient Key) protection required or not */
+    u8 gtk_protection;
+} NanDataPathIndicationResponse;
+
+/* Sub slot parameters */
+typedef struct {
+    u8 entry_control;
+    u16 time_bitmap_control;
+    u32 time_bitmap;
+} NanS3Params;
+
+/* NDP termination info */
+typedef struct {
+    u8 num_ndp_instances;
+    /*
+      Unique token Id generated on the initiator/responder side
+      used for a NDP session between two NAN devices
+    */
+    NanDataPathId ndp_instance_id[];
+} NanDataPathEndRequest;
+
+/*
+  Event indication received on the
+  responder side when a Nan Data request or
+  NDP session is initiated on the Initiator side
+*/
+typedef struct {
+    /*
+      Unique Instance Id corresponding to a service/session.
+      This is similar to the publish_id generated on the
+      publisher side
+    */
+    u16 service_instance_id;
+    /* Discovery MAC addr of the peer/initiator */
+    u8 peer_disc_mac_addr[NAN_MAC_ADDR_LEN];
+    /*
+      Unique token Id generated on the initiator/responder side
+      used for a NDP session between two NAN devices
+    */
+    NanDataPathId ndp_instance_id;
+    /* Initiator/Responder Security/QoS configuration */
+    NanDataPathCfg ndp_cfg;
+    /* App/Service information of the initiator */
+    NanDataPathAppInfo app_info;
+
+    /* Security Context Identifiers length */
+    u32 scid_len;
+    /*
+       Security Context Identifier attribute contains PMKID
+       shall be included in NDP setup and response messages.
+       Security Context Identifier, Identifies the Security
+       Context. For NAN Shared Key Cipher Suite, this field
+       contains the 16 octet PMKID identifying the PMK used
+       for setting up the Secure Data Path.
+    */
+    u8 scid[NAN_MAX_SCID_BUF_LEN];
+
+    /* configure CSIA (Cipher Suite Information attribute) capability to specify GTK, IGTK, BIGTK
+       are supported or not
+    */
+    u8 csia_capabilities;
+
+    /* configure GTK(Group Transient Key) protection required or not */
+    u8 gtk_protection;
+} NanDataPathRequestInd;
+
+/*
+ Event indication of data confirm is received on both
+ initiator and responder side confirming a NDP session
+*/
+typedef struct {
+    /*
+      Unique token Id generated on the initiator/responder side
+      used for a NDP session between two NAN devices
+    */
+    NanDataPathId ndp_instance_id;
+    /*
+      NDI mac address of the peer
+      (required to derive target ipv6 address)
+    */
+    u8 peer_ndi_mac_addr[NAN_MAC_ADDR_LEN];
+    /* App/Service information of Initiator/Responder */
+    NanDataPathAppInfo app_info;
+    /* Response code indicating ACCEPT/REJECT/DEFER */
+    NanDataPathResponseCode rsp_code;
+    /*
+      Reason code indicating the cause for REJECT.
+      NAN_STATUS_SUCCESS and NAN_STATUS_PROTOCOL_FAILURE are
+      expected reason codes.
+    */
+    NanStatusType reason_code;
+    /* Number of channels for which info is indicated */
+    u32 num_channels;
+    /*
+      Data indicating the Channel list and BW of the channel.
+    */
+    NanChannelInfo channel_info[NAN_MAX_CHANNEL_INFO_SUPPORTED];
+} NanDataPathConfirmInd;
+
+/*
+ Event indication of schedule update is received on both
+ initiator and responder when a schedule change occurs
+*/
+typedef struct {
+    /*
+      NMI mac address
+    */
+    u8 peer_mac_addr[NAN_MAC_ADDR_LEN];
+    /*
+      Reason code indicating the cause of schedule update.
+      BIT_0 NSS Update
+      BIT_1 Channel list update
+    */
+    u32 schedule_update_reason_code;
+    /* Number of channels for which info is indicated */
+    u32 num_channels;
+    /*
+      Data indicating the Channel list and BW of the channel.
+    */
+    NanChannelInfo channel_info[NAN_MAX_CHANNEL_INFO_SUPPORTED];
+    /* Number of NDP instance Ids */
+    u8 num_ndp_instances;
+    /*
+      Unique token Id generated on the initiator/responder side
+      used for a NDP session between two NAN devices
+    */
+    NanDataPathId ndp_instance_id[];
+} NanDataPathScheduleUpdateInd;
+
+/*
+  Event indication received on the
+  initiator/responder side terminating
+  a NDP session
+*/
+typedef struct {
+    u8 num_ndp_instances;
+    /*
+      Unique token Id generated on the initiator/responder side
+      used for a NDP session between two NAN devices
+    */
+    NanDataPathId ndp_instance_id[];
+} NanDataPathEndInd;
+
+/*
+  Event indicating Range Request received on the
+  Published side.
+*/
+typedef struct {
+    u16 publish_id;/* id is existing publish */
+    /* Range Requestor's MAC address */
+    u8 range_req_intf_addr[NAN_MAC_ADDR_LEN];
+} NanRangeRequestInd;
+
+/*
+  Event indicating Range report on the
+  Published side.
+*/
+typedef struct {
+    u16 publish_id;/* id is existing publish */
+    /* Range Requestor's MAC address */
+    u8 range_req_intf_addr[NAN_MAC_ADDR_LEN];
+    /*
+       Distance to the NAN device with the MAC address indicated
+       with ranged mac address.
+    */
+    u32 range_measurement_mm;
+} NanRangeReportInd;
+
+/*
+  NAN pairing initator request
+*/
+typedef struct {
+    /*
+       This Id is the Requestor Instance that is passed as
+       part of earlier MatchInd/FollowupInd message.
+    */
+    u32 requestor_instance_id;
+
+    /*
+      Discovery MAC addr of the publisher/peer
+    */
+    u8 peer_disc_mac_addr[NAN_MAC_ADDR_LEN];
+
+    /*
+      Indicate the pairing session is of setup or verification
+    */
+    NanPairingRequestType nan_pairing_request_type;
+
+    /*
+      whether the pairing is opportunistic or password
+    */
+    u8 is_opportunistic;
+
+    /*
+      Security key info used for the pairing setup or verification
+    */
+    NanSecurityKeyInfo key_info;
+    /*
+      AKM used for the pairing verification
+    */
+    NanAkm akm;
+
+    /*
+      Whether should cache the negotiated NIK/NPK for future verification
+    */
+    u8 enable_pairing_cache;
+
+    /*
+      The Identity key for pairing, can be used for pairing verification
+    */
+    u8 nan_identity_key[NAN_IDENTITY_KEY_LEN];
+
+    /*
+      NAN Cipher Suite Type
+    */
+    u32 cipher_type;
+
+} NanPairingRequest;
+
+/*
+  Data struct to initiate a pairing response on the responder side for an indication received with a
+  pairing request
+*/
+typedef struct {
+
+    /*
+      Unique token Id generated on the initiator/responder side
+      used for a pairing session between two NAN devices
+    */
+    u32 pairing_instance_id;
+
+    /*
+      Indicate the pairing session is setup or verification
+    */
+    NanPairingRequestType nan_pairing_request_type;
+
+    /* Response Code indicating ACCEPT/REJECT */
+    NanPairingResponseCode rsp_code;
+
+    /*
+      whether the pairing is opportunistic or password
+    */
+    u8 is_opportunistic;
+
+    /*
+      Security key info used for the pairing setup or verification
+    */
+    NanSecurityKeyInfo key_info;
+
+    /*
+      AKM used for the pairing verification
+    */
+    NanAkm akm;
+
+    /*
+      Whether should cache the negotiated NIK/NPK for future verification
+    */
+    u8 enable_pairing_cache;
+
+    /*
+      The Identity key for pairing, can be used for pairing verification
+    */
+    u8 nan_identity_key[NAN_IDENTITY_KEY_LEN];
+
+    /*
+      NAN Cipher Suite Type
+    */
+    u32 cipher_type;
+} NanPairingIndicationResponse;
+
+typedef struct {
+    /*
+      Unique token Id generated on the initiator/responder side
+      used for a pairing session between two NAN devices
+    */
+    u32 pairing_instance_id;
+} NanPairingEndRequest;
+
+/*
+  Event indication received on the responder side when a Nan pairing session is initiated on the
+  Initiator side
+*/
+typedef struct {
+    /* Publish instance id generated on Publisher side corresponding to a session */
+    u16 publish_subscribe_id;
+    /*
+      This Id is the Requestor Instance that is passed as
+      part of earlier MatchInd/FollowupInd message.
+    */
+    u32 requestor_instance_id;
+    /*
+      Unique Instance Id corresponding to a service/session.
+      This is similar to the publish_id generated on the
+      publisher side
+    */
+    u32 pairing_instance_id;
+    /* Discovery MAC addr of the peer/initiator */
+    u8 peer_disc_mac_addr[NAN_MAC_ADDR_LEN];
+    /* Indicate the pairing session is setup or verification */
+    NanPairingRequestType nan_pairing_request_type;
+    /* Whether should cache the negotiated NIK/NPK for future verification */
+    u8 enable_pairing_cache;
+    /* The NIRA from peer for Nan pairing verification */
+    NanIdentityResolutionAttribute nira;
+} NanPairingRequestInd;
+
+/*
+  The security info negotiate after the pairing setup for caching
+*/
+typedef struct {
+    /* The inentity key of peer device*/
+    u8 peer_nan_identity_key[NAN_IDENTITY_KEY_LEN];
+    /* The inentity key of local device*/
+    u8 local_nan_identity_key[NAN_IDENTITY_KEY_LEN];
+    /* The PMK excahnge between two devices*/
+    NanSecurityPmk npk;
+    /* The AKM used during the key exchange*/
+    NanAkm akm;
+    /* NAN Cipher Suite Type */
+    u32 cipher_type;
+} NpkSecurityAssociation;
+
+/*
+ Event indication of pairing confirm is received on both
+ initiator and responder side confirming a pairing session
+*/
+typedef struct {
+    /*
+      Unique token Id generated on the initiator/responder side
+      used for a pairing session between two NAN devices
+    */
+    u32 pairing_instance_id;
+    /* Response code indicating ACCEPT/REJECT */
+    NanPairingResponseCode rsp_code;
+    /*
+      Reason code indicating the cause for REJECT.
+      NAN_STATUS_SUCCESS and NAN_STATUS_PROTOCOL_FAILURE are
+      expected reason codes.
+    */
+    NanStatusType reason_code;
+    /*
+      Indicate the pairing session is setup or verification
+    */
+    NanPairingRequestType nan_pairing_request_type;
+    /* Whether should cache the negotiated NIK/NPK for future verification */
+    u8 enable_pairing_cache;
+    /*
+      The security association info negotiated in the pairing setup, used for future verification
+    */
+    NpkSecurityAssociation npk_security_association;
+} NanPairingConfirmInd;
+
+/*
+  NAN pairing bootstrapping initiator request
+*/
+typedef struct {
+    /* Publish or Subscribe Id of local Publish/Subscribe */
+    u16 publish_subscribe_id;
+
+    /*
+       This Id is the Requestor Instance that is passed as
+       part of earlier MatchInd/FollowupInd message.
+    */
+    u32 requestor_instance_id;
+
+    /*
+      Discovery MAC addr of the publisher/peer
+    */
+    u8 peer_disc_mac_addr[NAN_MAC_ADDR_LEN];
+
+    /* Proposed bootstrapping method */
+    u16 request_bootstrapping_method;
+
+    /*
+       Sequence of values which further specify the published service beyond
+       the service name.
+    */
+    u16 service_specific_info_len;
+    u8 service_specific_info[NAN_MAX_SERVICE_SPECIFIC_INFO_LEN];
+
+    /*
+       Sequence of values indicating the service specific info in SDEA
+       Used for service managed bootstrapping method
+    */
+    u16 sdea_service_specific_info_len;
+    u8 sdea_service_specific_info[NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN];
+
+    /* Indicates that this is comeback Bootstrapping request */
+    u8 comeback;
+
+    /* The length of cookie. */
+    u32 cookie_length;
+
+    /* Cookie for the follow up request */
+    u8 cookie[];
+
+} NanBootstrappingRequest;
+/*
+ NAN pairing bootstrapping response from responder to a initate request
+*/
+typedef struct {
+    /* Publish or Subscribe Id of local Publish/Subscribe */
+    u16 publish_subscribe_id;
+
+    /*
+       This Id is the Peer Instance that is passed as
+       part of earlier MatchInd/FollowupInd message.
+    */
+    u32 service_instance_id;
+
+    /* Discovery MAC addr of the peer/initiator */
+    u8 peer_disc_mac_addr[NAN_MAC_ADDR_LEN];
+
+    /*
+       Sequence of values which further specify the published service beyond
+       the service name.
+    */
+    u16 service_specific_info_len;
+    u8 service_specific_info[NAN_MAX_SERVICE_SPECIFIC_INFO_LEN];
+
+    /*
+       Sequence of values indicating the service specific info in SDEA
+       Used for service managed bootstrapping method
+    */
+    u16 sdea_service_specific_info_len;
+    u8 sdea_service_specific_info[NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN];
+
+    /* Response Code indicating ACCEPT/REJECT */
+    NanBootstrappingResponseCode rsp_code;
+
+    /* The delay of bootstrapping in seconds */
+    u32 come_back_delay;
+
+    /* The length of cookie. */
+    u32 cookie_length;
+
+    /* Cookie for the follow up response */
+    u8 cookie[];
+
+} NanBootstrappingIndicationResponse;
+
+/*
+  Event indication received on the responder side when a Nan bootsrapping session is initiated on
+  the Initiator side
+*/
+typedef struct {
+    /* Publish or Subscribe Id of an earlier Publish/Subscribe */
+    u16 publish_subscribe_id;
+    /*
+      Unique Instance Id corresponding to a service/session.
+      This is similar to the publish_id generated on the
+      publisher side
+    */
+    u32 bootstrapping_instance_id;
+    /*
+      This Id is the Requestor Instance that is passed as
+      part of earlier MatchInd/FollowupInd message.
+    */
+    u32 requestor_instance_id;
+    /* Discovery MAC addr of the peer/initiator */
+    u8 peer_disc_mac_addr[NAN_MAC_ADDR_LEN];
+    /* Proposed bootstrapping method from peer*/
+    u16 request_bootstrapping_method;
+
+} NanBootstrappingRequestInd;
+
+/*
+ Event indication of bootstapping confirm is received on both
+ initiator side confirming a bootstrapping method
+*/
+typedef struct {
+    /*
+      Unique token Id generated on the initiator/responder side
+      used for a bootstrapping session between two NAN devices
+    */
+    u32 bootstrapping_instance_id;
+    /* Response Code indicating ACCEPT/REJECT */
+    NanBootstrappingResponseCode rsp_code;
+    /*
+      Reason code indicating the cause for REJECT.
+      NAN_STATUS_SUCCESS and NAN_STATUS_PROTOCOL_FAILURE are
+      expected reason codes.
+    */
+    NanStatusType reason_code;
+    /* The delay of bootstrapping in seconds */
+    u32 come_back_delay;
+
+    /* The length of cookie. */
+    u32 cookie_length;
+
+    /* Cookie received from the comeback response */
+    u8 cookie[];
+
+} NanBootstrappingConfirmInd;
+
+/*
+ Event indication the device enter or exist the suspension mode
+*/
+typedef struct {
+    /* Indication the device is suspended or not */
+    bool is_suspended;
+} NanSuspensionModeChangeInd;
+
+/* Response and Event Callbacks */
+typedef struct {
+    /* NotifyResponse invoked to notify the status of the Request */
+    void (*NotifyResponse)(transaction_id id, NanResponseMsg* rsp_data);
+    /* Callbacks for various Events */
+    void (*EventPublishReplied)(NanPublishRepliedInd *event);
+    void (*EventPublishTerminated)(NanPublishTerminatedInd* event);
+    void (*EventMatch) (NanMatchInd* event);
+    void (*EventMatchExpired) (NanMatchExpiredInd* event);
+    void (*EventSubscribeTerminated) (NanSubscribeTerminatedInd* event);
+    void (*EventFollowup) (NanFollowupInd* event);
+    void (*EventDiscEngEvent) (NanDiscEngEventInd* event);
+    void (*EventDisabled) (NanDisabledInd* event);
+    void (*EventTca) (NanTCAInd* event);
+    void (*EventBeaconSdfPayload) (NanBeaconSdfPayloadInd* event);
+    void (*EventDataRequest)(NanDataPathRequestInd* event);
+    void (*EventDataConfirm)(NanDataPathConfirmInd* event);
+    void (*EventDataEnd)(NanDataPathEndInd* event);
+    void (*EventTransmitFollowup) (NanTransmitFollowupInd* event);
+    void (*EventRangeRequest) (NanRangeRequestInd* event);
+    void (*EventRangeReport) (NanRangeReportInd* event);
+    void (*EventScheduleUpdate) (NanDataPathScheduleUpdateInd* event);
+    void (*EventPairingRequest) (NanPairingRequestInd* event);
+    void (*EventPairingConfirm) (NanPairingConfirmInd* event);
+    void (*EventBootstrappingRequest) (NanBootstrappingRequestInd* event);
+    void (*EventBootstrappingConfirm) (NanBootstrappingConfirmInd* event);
+    void (*EventSuspensionModeChange) (NanSuspensionModeChangeInd* event);
+} NanCallbackHandler;
+
+/**@brief nan_enable_request
+ *        Enable NAN functionality
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanEnableRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_ALREADY_ENABLED
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_NAN_NOT_ALLOWED
+ */
+wifi_error nan_enable_request(transaction_id id,
+                              wifi_interface_handle iface,
+                              NanEnableRequest* msg);
+
+/**@brief nan_disbale_request
+ *        Disable NAN functionality.
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanDisableRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *
+ */
+wifi_error nan_disable_request(transaction_id id,
+                               wifi_interface_handle iface);
+
+/**@brief nan_publish_request
+ *        Publish request to advertize a service
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanPublishRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_NO_RESOURCE_AVAILABLE
+ *                      NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID
+ */
+wifi_error nan_publish_request(transaction_id id,
+                               wifi_interface_handle iface,
+                               NanPublishRequest* msg);
+
+/**@brief nan_publish_cancel_request
+ *        Cancel previous publish request
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanPublishCancelRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ */
+wifi_error nan_publish_cancel_request(transaction_id id,
+                                      wifi_interface_handle iface,
+                                      NanPublishCancelRequest* msg);
+
+/**@brief nan_subscribe_request
+ *        Subscribe request to search for a service
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanSubscribeRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_NO_SPACE_AVAILABLE
+ *                      NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID
+ */
+wifi_error nan_subscribe_request(transaction_id id,
+                                 wifi_interface_handle iface,
+                                 NanSubscribeRequest* msg);
+
+/**@brief nan_subscribe_cancel_request
+ *         Cancel previous subscribe requests.
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanSubscribeRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ */
+wifi_error nan_subscribe_cancel_request(transaction_id id,
+                                        wifi_interface_handle iface,
+                                        NanSubscribeCancelRequest* msg);
+
+/**@brief nan_transmit_followup_request
+ *         NAN transmit follow up request
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanTransmitFollowupRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID
+ *                      NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID
+ *                      NAN_STATUS_FOLLOWUP_QUEUE_FULL
+ * @return Asynchronous TransmitFollowupInd CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_NO_OTA_ACK
+ */
+wifi_error nan_transmit_followup_request(transaction_id id,
+                                         wifi_interface_handle iface,
+                                         NanTransmitFollowupRequest* msg);
+
+/**@brief nan_stats_request
+ *        Request NAN statistics from Discovery Engine.
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanStatsRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_INVALID_PARAM
+ */
+wifi_error nan_stats_request(transaction_id id,
+                             wifi_interface_handle iface,
+                             NanStatsRequest* msg);
+
+/**@brief nan_config_request
+ *        NAN configuration request.
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanConfigRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ */
+wifi_error nan_config_request(transaction_id id,
+                              wifi_interface_handle iface,
+                              NanConfigRequest* msg);
+
+/**@brief nan_tca_request
+ *        Configure the various Threshold crossing alerts
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanStatsRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ */
+wifi_error nan_tca_request(transaction_id id,
+                           wifi_interface_handle iface,
+                           NanTCARequest* msg);
+
+/**@brief nan_beacon_sdf_payload_request
+ *        Set NAN Beacon or sdf payload to discovery engine.
+ *          This instructs the Discovery Engine to begin publishing the
+ *        received payload in any Beacon or Service Discovery Frame transmitted
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanStatsRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ */
+wifi_error nan_beacon_sdf_payload_request(transaction_id id,
+                                         wifi_interface_handle iface,
+                                         NanBeaconSdfPayloadRequest* msg);
+
+/* Register NAN callbacks. */
+wifi_error nan_register_handler(wifi_interface_handle iface,
+                                NanCallbackHandler handlers);
+
+/*  Get NAN HAL version. */
+wifi_error nan_get_version(wifi_handle handle,
+                           NanVersion* version);
+
+/**@brief nan_get_capabilities
+ *        Get NAN Capabilities
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ */
+/*  Get NAN capabilities. */
+wifi_error nan_get_capabilities(transaction_id id,
+                                wifi_interface_handle iface);
+
+/* ========== Nan Data Path APIs ================ */
+/**@brief nan_data_interface_create
+ *        Create NAN Data Interface.
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param iface_name:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ */
+wifi_error nan_data_interface_create(transaction_id id,
+                                     wifi_interface_handle iface,
+                                     char* iface_name);
+
+/**@brief nan_data_interface_delete
+ *        Delete NAN Data Interface.
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param iface_name:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ */
+wifi_error nan_data_interface_delete(transaction_id id,
+                                     wifi_interface_handle iface,
+                                     char* iface_name);
+
+/**@brief nan_data_request_initiator
+ *        Initiate a NAN Data Path session.
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanDataPathInitiatorRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID
+ */
+wifi_error nan_data_request_initiator(transaction_id id,
+                                      wifi_interface_handle iface,
+                                      NanDataPathInitiatorRequest* msg);
+
+/**@brief nan_data_indication_response
+ *         Response to a data indication received
+ *         corresponding to a NDP session. An indication
+ *         is received with a data request and the responder
+ *         will send a data response
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanDataPathIndicationResponse:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INVALID_NDP_ID
+ */
+wifi_error nan_data_indication_response(transaction_id id,
+                                        wifi_interface_handle iface,
+                                        NanDataPathIndicationResponse* msg);
+
+/**@brief nan_data_end
+ *         NDL termination request: from either Initiator/Responder
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanDataPathEndRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INVALID_NDP_ID
+ */
+wifi_error nan_data_end(transaction_id id,
+                        wifi_interface_handle iface,
+                        NanDataPathEndRequest* msg);
+/**@brief nan_pairing_request
+ *        Initiate a NAN Pairingsession.
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanPairingRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID
+ */
+wifi_error nan_pairing_request(transaction_id id, wifi_interface_handle iface,
+                               NanPairingRequest* msg);
+
+/**@brief nan_pairing_indication_response
+ *        Response to a pairing indication received
+ *        corresponding to a pairing session. An indication
+ *        is received with a pairing request and the responder
+ *        will send a pairing response
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanPairingIndicationResponse:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INVALID_PAIRING_ID
+ */
+wifi_error nan_pairing_indication_response(transaction_id id, wifi_interface_handle iface,
+                                           NanPairingIndicationResponse* msg);
+
+/**@brief nan_pairing_end
+ *        Cancel and remove the existing Pairing setups
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanPairingEndRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INVALID_PAIRING_ID
+ */
+wifi_error nan_pairing_end(transaction_id id, wifi_interface_handle iface,
+                                                 NanPairingEndRequest* msg);
+
+/**@brief nan_bootstrapping_request
+ *        Initiate a NAN Bootstrapping session.
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanBootstrappingRequest:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID
+ */
+wifi_error nan_bootstrapping_request(transaction_id id, wifi_interface_handle iface,
+                                     NanBootstrappingRequest* msg);
+
+/**@brief nan_bootstrapping_indication_response
+ *         Response to a pairing indication received
+ *         corresponding to a pairing session. An indication
+ *         is received with a pairing request and the responder
+ *         will send a pairing response
+ *
+ * @param transaction_id:
+ * @param wifi_interface_handle:
+ * @param NanBootstrappingIndicationResponse:
+ * @return Synchronous wifi_error
+ * @return Asynchronous NotifyResponse CB return
+ *                      NAN_STATUS_SUCCESS
+ *                      NAN_STATUS_INVALID_PARAM
+ *                      NAN_STATUS_INTERNAL_FAILURE
+ *                      NAN_STATUS_PROTOCOL_FAILURE
+ *                      NAN_STATUS_INVALID_BOOTSTRAPPING_ID
+ */
+wifi_error nan_bootstrapping_indication_response(transaction_id id, wifi_interface_handle iface,
+                                                 NanBootstrappingIndicationResponse* msg);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __NAN_H__ */
diff --git a/wifi/legacy_headers/include/hardware_legacy/wifi_offload.h b/wifi/legacy_headers/include/hardware_legacy/wifi_offload.h
new file mode 100644
index 0000000..835614e
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/wifi_offload.h
@@ -0,0 +1,32 @@
+#include "wifi_hal.h"
+
+#ifndef __WIFI_HAL_OFFLOAD_H
+#define __WIFI_HAL_OFFLOAD_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#define ETHER_ADDR_LEN		6	// Ethernet frame address length
+#define N_AVAIL_ID		3	// available mkeep_alive IDs from 1 to 3
+#define MKEEP_ALIVE_IP_PKT_MAX	256     // max size of IP packet for keep alive
+
+/**
+ * Send specified keep alive packet periodically.
+ */
+wifi_error wifi_start_sending_offloaded_packet(wifi_request_id id, wifi_interface_handle iface,
+        u16 ether_type, u8 *ip_packet, u16 ip_packet_len, u8 *src_mac_addr, u8 *dst_mac_addr,
+        u32 period_msec);
+
+/**
+ * Stop sending keep alive packet.
+ */
+wifi_error wifi_stop_sending_offloaded_packet(wifi_request_id id, wifi_interface_handle iface);
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /*__WIFI_HAL_OFFLOAD_H */
diff --git a/wifi/legacy_headers/include/hardware_legacy/wifi_twt.h b/wifi/legacy_headers/include/hardware_legacy/wifi_twt.h
new file mode 100644
index 0000000..1a787ef
--- /dev/null
+++ b/wifi/legacy_headers/include/hardware_legacy/wifi_twt.h
@@ -0,0 +1,310 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __WIFI_HAL_TWT_H__
+#define __WIFI_HAL_TWT_H__
+
+#include "wifi_hal.h"
+
+/**
+ * New HAL interface to Target Wake Time (TWT).
+ */
+
+/* TWT capabilities supported */
+typedef struct {
+    u8 is_twt_requester_supported; // 0 for not supporting twt requester
+    u8 is_twt_responder_supported; // 0 for not supporting twt responder
+    u8 is_broadcast_twt_supported; // 0 for not supporting broadcast twt
+    u8 is_flexible_twt_supported;  // 0 for not supporting flexible twt schedules
+    u32 min_wake_duration_micros;  // minimum twt wake duration capable in microseconds
+    u32 max_wake_duration_micros;  // maximum twt wake duration capable in microseconds
+    u32 min_wake_interval_micros;  // minimum twt wake interval capable in microseconds
+    u32 max_wake_interval_micros;  // maximum twt wake interval capable in microseconds
+} wifi_twt_capabilities;
+
+/* TWT request parameters to setup or update a TWT session */
+typedef struct {
+    s8  mlo_link_id; // MLO Link id in case TWT is requesting for MLO connection.
+                     // Otherwise UNSPECIFIED.
+    u32 min_wake_duration_micros;  // minimum twt wake duration in microseconds
+    u32 max_wake_duration_micros;  // maximum twt wake duration in microseconds
+    u32 min_wake_interval_micros;  // minimum twt wake interval in microseconds
+    u32 max_wake_interval_micros;  // maximum twt wake interval in microseconds
+} wifi_twt_request;
+
+/* TWT negotiation types */
+typedef enum {
+    WIFI_TWT_NEGO_TYPE_INDIVIDUAL,
+    WIFI_TWT_NEGO_TYPE_BROADCAST,
+} wifi_twt_negotiation_type;
+
+/* TWT session */
+typedef struct {
+    u32 session_id; // a unique identifier for the session
+    s8 mlo_link_id; // link id in case of MLO connection. Otherwise UNSPECIFIED.
+    u32 wake_duration_micros; // TWT service period in microseconds
+    u32 wake_interval_micros; // TWT wake interval for this session in microseconds
+    wifi_twt_negotiation_type negotiation_type; // TWT negotiation type
+    u8 is_trigger_enabled; // 0 if this TWT session is not trigger enabled
+    u8 is_announced;       // 0 if this TWT session is not announced
+    u8 is_implicit;        // 0 if this TWT session is not implicit
+    u8 is_protected;       // 0 if this TWT session is not protected
+    u8 is_updatable;     // 0 if this TWT session is not updatable
+    u8 is_suspendable;   // 0 if this TWT session can not be suspended and resumed
+    u8 is_responder_pm_mode_enabled; // 0 if TWT responder does not intend to go to doze mode
+                                     // outside of TWT service periods
+} wifi_twt_session;
+
+/* TWT session stats */
+typedef struct {
+    u32 avg_pkt_num_tx;  // Average number of Tx packets in each wake duration.
+    u32 avg_pkt_num_rx;  // Average number of Rx packets in each wake duration.
+    u32 avg_tx_pkt_size; // Average bytes per Rx packet in each wake duration.
+    u32 avg_rx_pkt_size; // Average bytes per Rx packet in each wake duration.
+    u32 avg_eosp_dur_us; // Average duration of early terminated SP
+    u32 eosp_count;      // Count of early terminations
+} wifi_twt_session_stats;
+
+/* TWT error codes */
+typedef enum {
+    WIFI_TWT_ERROR_CODE_FAILURE_UNKNOWN,    // unknown failure
+    WIFI_TWT_ERROR_CODE_ALREADY_RESUMED,    // TWT session is already resumed
+    WIFI_TWT_ERROR_CODE_ALREADY_SUSPENDED,  // TWT session is already suspended
+    WIFI_TWT_ERROR_CODE_INVALID_PARAMS,     // invalid parameters
+    WIFI_TWT_ERROR_CODE_MAX_SESSION_REACHED,// maximum number of sessions reached
+    WIFI_TWT_ERROR_CODE_NOT_AVAILABLE,      // requested operation is not available
+    WIFI_TWT_ERROR_CODE_NOT_SUPPORTED,      // requested operation is not supported
+    WIFI_TWT_ERROR_CODE_PEER_NOT_SUPPORTED, // requested operation is not supported by the
+                                            // peer
+    WIFI_TWT_ERROR_CODE_PEER_REJECTED,      // requested operation is rejected by the peer
+    WIFI_TWT_ERROR_CODE_TIMEOUT,            // requested operation is timed out
+} wifi_twt_error_code;
+
+/* TWT teardown reason codes */
+typedef enum {
+    WIFI_TWT_TEARDOWN_REASON_CODE_UNKNOWN,              // unknown reason
+    WIFI_TWT_TEARDOWN_REASON_CODE_LOCALLY_REQUESTED,    // teardown requested by the framework
+    WIFI_TWT_TEARDOWN_REASON_CODE_INTERNALLY_INITIATED, // teardown initiated internally by the
+                                                        // firmware or driver.
+    WIFI_TWT_TEARDOWN_REASON_CODE_PEER_INITIATED,        // teardown initiated by the peer
+} wifi_twt_teardown_reason_code;
+
+/**
+ * TWT events
+ *
+ * Each of the events has a wifi_request_id to match the command responsible for the event. If the
+ * id is 0, the event is an unsolicited.
+ */
+typedef struct {
+    /**
+     * Called to indicate a TWT failure.
+     *
+     * @param id Id used to identify the command. The value 0 indicates no associated command.
+     * @param error_code TWT error code.
+     */
+    void (*on_twt_failure)(wifi_request_id id, wifi_twt_error_code error_code);
+
+    /**
+     * Called when a Target Wake Time session is created. See wifi_twt_session_setup.
+     *
+     * @param id Id used to identify the command.
+     * @param session TWT session created.
+     */
+    void (*on_twt_session_create)(wifi_request_id id, wifi_twt_session session);
+
+    /**
+     * Called when a Target Wake Time session is updated. See wifi_twt_session_update.
+     *
+     * @param id Id used to identify the command. The value 0 indicates no associated command.
+     * @param twtSession TWT session.
+     */
+    void (*on_twt_session_update)(wifi_request_id id, wifi_twt_session session);
+
+    /**
+     * Called when the Target Wake Time session is torn down. See wifi_twt_session_teardown.
+     *
+     * @param id Id used to identify the command. The value 0 indicates no associated command.
+     * @param session_id TWT session id.
+     * @param reason Teardown reason code.
+     */
+    void (*on_twt_session_teardown)(wifi_request_id id, int session_id,
+                                    wifi_twt_teardown_reason_code reason);
+
+    /**
+     * Called when TWT session stats available. See wifi_twt_session_get_stats.
+     *
+     * @param id Id used to identify the command.
+     * @param session_id TWT session id.
+     * @param stats TWT session stats.
+     */
+    void (*on_twt_session_stats)(wifi_request_id id, int session_id, wifi_twt_session_stats stats);
+
+    /**
+     * Called when the Target Wake Time session is suspended. See wifi_twt_session_suspend.
+     *
+     * @param id Id used to identify the command.
+     * @param session_id TWT session id.
+     */
+    void (*on_twt_session_suspend)(wifi_request_id id, int session_id);
+
+    /**
+     * Called when the Target Wake Time session is resumed. See wifi_twt_session_resume.
+     *
+     * @param id Id used to identify the command.
+     * @param session_id TWT session id.
+     */
+    void (*on_twt_session_resume)(wifi_request_id id, int session_id);
+} wifi_twt_events;
+
+/**
+ * Important note: Following legacy HAL TWT interface is deprecated. It will be removed in future.
+ * Please use the new interface listed above.
+ */
+typedef struct {
+    u8 requester_supported; // 0 for not supporting requester
+    u8 responder_supported; // 0 for not supporting responder
+    u8 broadcast_twt_supported; // 0 for not supporting broadcast TWT
+    u8 flexibile_twt_supported; // 0 for not supporting flexible TWT
+} TwtCapability;
+
+typedef struct {
+    TwtCapability device_capability;
+    TwtCapability peer_capability;
+} TwtCapabilitySet;
+
+// For all optional fields below, if no value specify -1
+typedef struct {
+    u8 config_id;        // An unique ID for an individual TWT request
+    u8 negotiation_type; // 0 for individual TWT, 1 for broadcast TWT
+    u8 trigger_type;     // 0 for non-triggered TWT, 1 for triggered TWT
+    s32 wake_dur_us;     // Proposed wake duration in us
+    s32 wake_int_us;     // Average wake interval in us
+    s32 wake_int_min_us; // Min wake interval in us. Optional.
+    s32 wake_int_max_us; // Max wake interval in us. Optional.
+    s32 wake_dur_min_us; // Min wake duration in us. Optional.
+    s32 wake_dur_max_us; // Max wake duration in us. Optional.
+    s32 avg_pkt_size;    // Average bytes of each packet to send in each wake
+                         // duration. Optional.
+    s32 avg_pkt_num;     // Average number of packets to send in each wake
+                         // duration. Optional.
+    s32 wake_time_off_us; // First wake duration time offset in us. Optional.
+} TwtSetupRequest;
+
+typedef enum {
+    TWT_SETUP_SUCCESS = 0, // TWT setup is accepted.
+    TWT_SETUP_REJECT = 1,  // TWT setup is rejected by AP.
+    TWT_SETUP_TIMEOUT = 2, // TWT setup response from AP times out.
+    TWT_SETUP_IE = 3,      // AP sent TWT Setup IE parsing failure.
+    TWT_SETUP_PARAMS = 4,  // AP sent TWT Setup IE Parameters invalid.
+    TWT_SETUP_ERROR = 255, // Generic error
+} TwtSetupReasonCode;
+
+typedef struct {
+    u8 config_id; // An unique ID for an individual TWT request
+    u8 status;    // 0 for success, non-zero for failure
+    TwtSetupReasonCode reason_code;
+    u8 negotiation_type; // 0 for individual TWT, 1 for broadcast TWT
+    u8 trigger_type;     // 0 for non-triggered TWT, 1 for triggered TWT
+    s32 wake_dur_us;     // Proposed wake duration in us
+    s32 wake_int_us;     // Average wake interval in us
+    s32 wake_time_off_us; // First wake duration time offset in us.
+} TwtSetupResponse;
+
+typedef struct {
+    u8 config_id;        // An unique ID for an individual TWT request
+    u8 all_twt;          // 0 for individual setp request, 1 for all TWT
+    u8 negotiation_type; // 0 for individual TWT, 1 for broadcast TWT
+} TwtTeardownRequest;
+
+typedef enum {
+    TWT_TD_RC_HOST = 0,  // Teardown triggered by Host
+    TWT_TD_RC_PEER = 1,  // Peer initiated teardown
+    TWT_TD_RC_MCHAN = 2, // Teardown due to MCHAN Active
+    TWT_TD_RC_MCNX = 3,  // Teardown due to MultiConnection
+    TWT_TD_RC_CSA = 4,   // Teardown due to CSA
+    TWT_TD_RC_BTCX = 5,  // Teardown due to BT Coex
+    TWT_TD_RC_SETUP_FAIL = 6, // Setup fails midway. Teardown all connections
+    TWT_TD_RC_SCHED = 7,   // Teardown by TWT Scheduler
+    TWT_TD_RC_ERROR = 255, // Generic error cases
+} TwtTeardownReason;
+
+typedef struct {
+    u8 config_id; // An unique ID for an individual TWT request
+    u8 all_twt;   // 0 for individual setp request, 1 for all TWT
+    u8 status;    // 0 for success, non-zero for failure
+    TwtTeardownReason reason;
+} TwtTeardownCompletion;
+
+typedef struct {
+    u8 config_id;       // An unique ID for an individual TWT request
+    u8 all_twt;         // 0 for individual setup request, 1 for all TWT
+    s32 resume_time_us; // If -1, TWT is suspended for indefinite time.
+                        // Otherwise, TWT is suspended for resume_time_us
+} TwtInfoFrameRequest;
+
+typedef enum {
+    TWT_INFO_RC_HOST  = 0, // Host initiated TWT Info frame */
+    TWT_INFO_RC_PEER  = 1, // Peer initiated TWT Info frame
+    TWT_INFO_RC_ERROR = 2, // Generic error conditions */
+} TwtInfoFrameReason;
+
+// TWT Info frame triggered externally.
+// Device should not send TwtInfoFrameReceived to Host for internally
+// triggered TWT Info frame during SCAN, MCHAN operations.
+typedef struct {
+    u8 config_id; // An unique ID for an individual TWT request
+    u8 all_twt;   // 0 for individual setup request, 1 for all TWT
+    u8 status;    // 0 for success, non-zero for failure
+    TwtInfoFrameReason reason;
+    u8 twt_resumed; // 1 - TWT resumed, 0 - TWT suspended
+} TwtInfoFrameReceived;
+
+typedef struct {
+    u8 config_id;
+    u32 avg_pkt_num_tx; // Average number of Tx packets in each wake duration.
+    u32 avg_pkt_num_rx; // Average number of Rx packets in each wake duration.
+    u32 avg_tx_pkt_size; // Average bytes per Rx packet in each wake duration.
+    u32 avg_rx_pkt_size; // Average bytes per Rx packet in each wake duration.
+    u32 avg_eosp_dur_us; // Average duration of early terminated SP
+    u32 eosp_count;  // Count of early terminations
+    u32 num_sp; // Count of service period (SP), also known as wake duration.
+} TwtStats;
+
+// Asynchronous notification from the device.
+// For example, TWT was torn down by the device and later when the device is
+// ready, it can send this async notification.
+// This can be expandable in future.
+typedef enum {
+   TWT_NOTIF_ALLOW_TWT  = 1, // Device ready to process TWT Setup request
+} TwtNotification;
+
+typedef struct {
+    TwtNotification notification;
+} TwtDeviceNotify;
+
+// Callbacks for various TWT responses and events
+typedef struct {
+    // Callback for TWT setup response
+    void (*EventTwtSetupResponse)(TwtSetupResponse *event);
+    // Callback for TWT teardown completion
+    void (*EventTwtTeardownCompletion)(TwtTeardownCompletion* event);
+    // Callback for TWT info frame received event
+    void (*EventTwtInfoFrameReceived)(TwtInfoFrameReceived* event);
+    // Callback for TWT notification from the device
+    void (*EventTwtDeviceNotify)(TwtDeviceNotify* event);
+} TwtCallbackHandler;
+
+#endif /* __WIFI_HAL_TWT_H__ */