diff --git a/os_if/linux/qca_vendor.h b/os_if/linux/qca_vendor.h
index 059477929d..5414e6f70e 100644
--- a/os_if/linux/qca_vendor.h
+++ b/os_if/linux/qca_vendor.h
@@ -437,6 +437,10 @@
  *	the host driver. The band configurations obtained are referred through
  *	QCA_WLAN_VENDOR_ATTR_SETBAND_MASK.
  *
+ * @QCA_NL80211_VENDOR_SUBCMD_MEDIUM_ASSESS: Vendor subcommand/event for medium
+ *	assessment.
+ *	Uses attributes defined in enum qca_wlan_vendor_attr_medium_assess.
+ *
  * @QCA_NL80211_VENDOR_SUBCMD_UPDATE_SSID: This acts as a vendor event and is
  *	used to update SSID information in hostapd when it is updated in the
  *	driver. Uses the attribute NL80211_ATTR_SSID.
@@ -683,6 +687,7 @@ enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_CONFIG_TSPEC = 190,
 	QCA_NL80211_VENDOR_SUBCMD_CONFIG_TWT = 191,
 	QCA_NL80211_VENDOR_SUBCMD_GETBAND = 192,
+	QCA_NL80211_VENDOR_SUBCMD_MEDIUM_ASSESS = 193,
 	QCA_NL80211_VENDOR_SUBCMD_UPDATE_SSID = 194,
 	QCA_NL80211_VENDOR_SUBCMD_WIFI_FW_STATS = 195,
 	QCA_NL80211_VENDOR_SUBCMD_MBSSID_TX_VDEV_STATUS = 196,
@@ -9844,6 +9849,99 @@ enum qca_wlan_vendor_attr_config_tspec {
 	QCA_WLAN_VENDOR_ATTR_CONFIG_TSPEC_AFTER_LAST - 1,
 };
 
+/**
+ * enum qca_wlan_medium_assess_type - Type of medium assess request
+ *
+ * Values for %QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_TYPE.
+ */
+enum qca_wlan_medium_assess_type {
+	QCA_WLAN_MEDIUM_ASSESS_CCA = 0,
+	QCA_WLAN_MEDIUM_ASSESS_CONGESTION_REPORT = 1,
+};
+
+/**
+ * enum qca_wlan_vendor_attr_medium_assess - Attributes used by
+ * %QCA_NL80211_VENDOR_SUBCMD_MEDIUM_ASSESS vendor command.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_TYPE:
+ * u8 attribute. Mandatory in all kinds of medium assess requests/responses.
+ * Specify the type of medium assess request and indicate its type in response.
+ * Possible values are defined in enum qca_wlan_medium_assess_type.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_PERIOD:
+ * u32 attribute. Mandatory in CCA request.
+ * Specify the assessment period in terms of seconds. Assessment result will be
+ * sent as the response to the CCA request after the assessment period.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_TOTAL_CYCLE_COUNT:
+ * u32 attribute. Mandatory in response to CCA request.
+ * Total timer tick count of the assessment cycle.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_IDLE_COUNT:
+ * u32 attribute. Mandatory in response to CCA request.
+ * Timer tick count of idle time in the assessment cycle.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_IBSS_RX_COUNT:
+ * u32 attribute. Mandatory in response to CCA request.
+ * Timer tick count of Intra BSS traffic RX time in the assessment cycle.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_OBSS_RX_COUNT:
+ * u32 attribute. Mandatory in response to CCA request.
+ * Timer tick count of Overlapping BSS traffic RX time in the assessment cycle.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_MAX_IBSS_RSSI:
+ * s32 attribute. Mandatory in response to CCA request.
+ * Maximum RSSI of Intra BSS traffic in the assessment cycle.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_MIN_IBSS_RSSI:
+ * s32 attribute. Mandatory in response to CCA request.
+ * Minimum RSSI of Intra BSS traffic in the assessment cycle.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_CONGESTION_REPORT_ENABLE:
+ * u8 attribute. Mandatory in congestion report request.
+ * 1-enable 0-disable.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_CONGESTION_REPORT_THRESHOLD:
+ * u8 attribute. Mandatory in congestion report enable request and will be
+ * ignored if present in congestion report disable request. Possible values are
+ * 0-100. A vendor event QCA_NL80211_VENDOR_SUBCMD_MEDIUM_ASSESS with the type
+ * QCA_WLAN_MEDIUM_ASSESS_CONGESTION_REPORT will be sent to userspace if
+ * congestion percentage reaches the configured threshold.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_CONGESTION_REPORT_INTERVAL:
+ * u8 attribute. Optional in congestion report enable request and will be
+ * ignored if present in congestion report disable request.
+ * Specify the interval of congestion report event in terms of seconds. Possible
+ * values are 1-255. Default value 1 will be used if this attribute is omitted
+ * or using invalid values.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_CONGESTION_PERCENTAGE:
+ * u8 attribute. Mandatory in congestion report event.
+ * Indicate the actual congestion percentage. Possible values are 0-100.
+ */
+enum qca_wlan_vendor_attr_medium_assess {
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_INVALID = 0,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_TYPE = 1,
+
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_PERIOD = 2,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_TOTAL_CYCLE_COUNT = 3,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_IDLE_COUNT = 4,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_IBSS_RX_COUNT = 5,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_OBSS_RX_COUNT = 6,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_MAX_IBSS_RSSI = 7,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_MIN_IBSS_RSSI = 8,
+
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_CONGESTION_REPORT_ENABLE = 9,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_CONGESTION_REPORT_THRESHOLD = 10,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_CONGESTION_REPORT_INTERVAL = 11,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_CONGESTION_PERCENTAGE = 12,
+
+	/* keep last */
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_MAX =
+	QCA_WLAN_VENDOR_ATTR_MEDIUM_ASSESS_AFTER_LAST - 1,
+};
+
 /**
  * enum qca_wlan_vendor_attr_mbssid_tx_vdev_status - Defines attributes
  * used by QCA_NL80211_VENDOR_SUBCMD_MBSSID_TX_VDEV_STATUS vendor command.
diff --git a/os_if/linux/wlan_cfg80211.h b/os_if/linux/wlan_cfg80211.h
index 32f3152ae6..8d0ff16b5c 100644
--- a/os_if/linux/wlan_cfg80211.h
+++ b/os_if/linux/wlan_cfg80211.h
@@ -226,6 +226,7 @@ enum qca_nl80211_vendor_subcmds_index {
 	QCA_NL80211_VENDOR_SUBCMD_OEM_DATA_INDEX,
 	QCA_NL80211_VENDOR_SUBCMD_REQUEST_SAR_LIMITS_INDEX,
 	QCA_NL80211_VENDOR_SUBCMD_UPDATE_STA_INFO_INDEX,
+	QCA_NL80211_VENDOR_SUBCMD_MEDIUM_ASSESS_INDEX,
 	QCA_NL80211_VENDOR_SUBCMD_UPDATE_SSID_INDEX,
 	QCA_NL80211_VENDOR_SUBCMD_WIFI_FW_STATS_INDEX,
 	QCA_NL80211_VENDOR_SUBCMD_MBSSID_TX_VDEV_STATUS_INDEX,