Add QCA vendor command/attr to filter frames from other BSSs

Add commands to allow an AP to configure filtering rules to capture
frames from stations that are active on the operating channel, but
not associated to this AP. Operations include add/delete the filter
and get the statistics information of the unassociated stations.

Signed-off-by: Karthikeyan Periyasamy <periyasa@codeaurora.org>

src/common/qca-vendor.h

@@ -445,6 +445,14 @@ enum qca_radiotap_vendor_ids {
  * @QCA_NL80211_VENDOR_SUBCMD_WIFI_TEST_CONFIGURATION: Sub command to set WiFi
  * 	test configuration. Attributes for this command are defined in
  * 	enum qca_wlan_vendor_attr_wifi_test_config.
+ *
+ * @QCA_NL80211_VENDOR_SUBCMD_BSS_FILTER: This command is used to configure an
+ *	RX filter to receive frames from stations that are active on the
+ *	operating channel, but not associated with the local device (e.g., STAs
+ *	associated with other APs). Filtering is done based on a list of BSSIDs
+ *	and STA MAC addresses added by the user. This command is also used to
+ *	fetch the statistics of unassociated stations. The attributes used with
+ *	this command are defined in enum qca_wlan_vendor_attr_bss_filter.
  */
 enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_UNSPEC = 0,
@@ -602,6 +610,8 @@ enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_THERMAL_EVENT = 168,
 	/* Wi-Fi test configuration subcommand */
 	QCA_NL80211_VENDOR_SUBCMD_WIFI_TEST_CONFIGURATION = 169,
+	/* Frame filter operations for other BSSs/unassociated STAs */
+	QCA_NL80211_VENDOR_SUBCMD_BSS_FILTER = 170,
 };
 
 
@@ -5374,4 +5384,103 @@ enum qca_wlan_vendor_attr_wifi_test_config {
 	QCA_WLAN_VENDOR_ATTR_WIFI_TEST_CONFIG_AFTER_LAST - 1,
 };
 
+/**
+ * enum qca_wlan_vendor_attr_bss_filter - Used by the vendor command
+ * QCA_NL80211_VENDOR_SUBCMD_BSS_FILTER.
+ * The user can add/delete the filter by specifying the BSSID/STA MAC address in
+ * QCA_WLAN_VENDOR_ATTR_BSS_FILTER_MAC_ADDR, filter type in
+ * QCA_WLAN_VENDOR_ATTR_BSS_FILTER_TYPE, add/delete action in
+ * QCA_WLAN_VENDOR_ATTR_BSS_FILTER_ACTION in the request. The user can get the
+ * statistics of an unassociated station by specifying the MAC address in
+ * QCA_WLAN_VENDOR_ATTR_BSS_FILTER_MAC_ADDR, station type in
+ * QCA_WLAN_VENDOR_ATTR_BSS_FILTER_TYPE, GET action in
+ * QCA_WLAN_VENDOR_ATTR_BSS_FILTER_ACTION in the request. The user also can get
+ * the statistics of all unassociated stations by specifying the Broadcast MAC
+ * address (ff:ff:ff:ff:ff:ff) in QCA_WLAN_VENDOR_ATTR_BSS_FILTER_MAC_ADDR with
+ * above procedure. In the response, driver shall specify statistics
+ * information nested in QCA_WLAN_VENDOR_ATTR_BSS_FILTER_STA_STATS.
+ */
+enum qca_wlan_vendor_attr_bss_filter {
+	QCA_WLAN_VENDOR_ATTR_BSS_FILTER_INVALID = 0,
+	QCA_WLAN_VENDOR_ATTR_BSS_FILTER_MAC_ADDR = 1,
+	/* Other BSS filter type, unsigned 8 bit value. One of the values
+	 * in enum qca_wlan_vendor_bss_filter_type.
+	 */
+	QCA_WLAN_VENDOR_ATTR_BSS_FILTER_TYPE = 2,
+	/* Other BSS filter action, unsigned 8 bit value. One of the values
+	 * in enum qca_wlan_vendor_bss_filter_action.
+	 */
+	QCA_WLAN_VENDOR_ATTR_BSS_FILTER_ACTION = 3,
+	/* Array of nested attributes where each entry is the statistics
+	 * information of the specified station that belong to another BSS.
+	 * Attributes for each entry are taken from enum
+	 * qca_wlan_vendor_bss_filter_sta_stats.
+	 * Other BSS station configured in
+	 * QCA_NL80211_VENDOR_SUBCMD_BSS_FILTER with filter type
+	 * QCA_WLAN_VENDOR_BSS_FILTER_TYPE_STA.
+	 * Statistics returned by QCA_NL80211_VENDOR_SUBCMD_BSS_FILTER
+	 * with filter action QCA_WLAN_VENDOR_BSS_FILTER_ACTION_GET.
+	 */
+	QCA_WLAN_VENDOR_ATTR_BSS_FILTER_STA_STATS = 4,
+
+	/* keep last */
+	QCA_WLAN_VENDOR_ATTR_BSS_FILTER_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_BSS_FILTER_MAX =
+	QCA_WLAN_VENDOR_ATTR_BSS_FILTER_AFTER_LAST - 1,
+};
+
+/**
+ * enum qca_wlan_vendor_bss_filter_type - Type of
+ * filter used in other BSS filter operations. Used by the vendor command
+ * QCA_NL80211_VENDOR_SUBCMD_BSS_FILTER.
+ *
+ * @QCA_WLAN_VENDOR_BSS_FILTER_TYPE_BSSID: BSSID filter
+ * @QCA_WLAN_VENDOR_BSS_FILTER_TYPE_STA: Station MAC address filter
+ */
+enum qca_wlan_vendor_bss_filter_type {
+	QCA_WLAN_VENDOR_BSS_FILTER_TYPE_BSSID,
+	QCA_WLAN_VENDOR_BSS_FILTER_TYPE_STA,
+};
+
+/**
+ * enum qca_wlan_vendor_bss_filter_action - Type of
+ * action in other BSS filter operations. Used by the vendor command
+ * QCA_NL80211_VENDOR_SUBCMD_BSS_FILTER.
+ *
+ * @QCA_WLAN_VENDOR_BSS_FILTER_ACTION_ADD: Add filter
+ * @QCA_WLAN_VENDOR_BSS_FILTER_ACTION_DEL: Delete filter
+ * @QCA_WLAN_VENDOR_BSS_FILTER_ACTION_GET: Get the statistics
+ */
+enum qca_wlan_vendor_bss_filter_action {
+	QCA_WLAN_VENDOR_BSS_FILTER_ACTION_ADD,
+	QCA_WLAN_VENDOR_BSS_FILTER_ACTION_DEL,
+	QCA_WLAN_VENDOR_BSS_FILTER_ACTION_GET,
+};
+
+/**
+ * enum qca_wlan_vendor_bss_filter_sta_stats - Attributes for
+ * the statistics of a specific unassociated station belonging to another BSS.
+ * The statistics provides information of the unassociated station
+ * filtered by other BSS operation - such as MAC, signal value.
+ * Used by the vendor command QCA_NL80211_VENDOR_SUBCMD_BSS_FILTER.
+ *
+ * @QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_MAC: MAC address of the station.
+ * @QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_RSSI: Last received signal strength
+ *	of the station. Unsigned 8 bit number containing RSSI.
+ * @QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_RSSI_TS: Time stamp of the host
+ *	driver for the last received RSSI. Unsigned 64 bit number containing
+ *	nanoseconds from the boottime.
+ */
+enum qca_wlan_vendor_bss_filter_sta_stats {
+	QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_INVALID = 0,
+	QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_MAC = 1,
+	QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_RSSI = 2,
+	QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_RSSI_TS = 3,
+
+	/* keep last */
+	QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_AFTER_LAST,
+	QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_MAX =
+	QCA_WLAN_VENDOR_BSS_FILTER_STA_STATS_AFTER_LAST - 1
+};
+
 #endif /* QCA_VENDOR_H */