Add QCA vendor attributes for measurement frequency for FTM/AOA

Add attributes for specifing the frequency where FTM/AOA measurement is
done over the air. This allows the user space framework to maintain its
own cache of peers without depending on the kernel scan results cache,
or perform scans less often (since entries in the kernel scan results
cache expire quickly). The change is backward compatible. If the
frequency attribute is not specified, the kernel scan results cache will
be queried, like done today.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>

src/common/qca-vendor.h

@@ -164,8 +164,11 @@ enum qca_radiotap_vendor_ids {
  *
  * @QCA_NL80211_VENDOR_SUBCMD_AOA_MEAS: Perform a standalone AOA (angle of
  *	arrival) measurement with a single peer. Specify peer MAC address in
- *	QCA_WLAN_VENDOR_ATTR_MAC_ADDR and measurement type in
- *	QCA_WLAN_VENDOR_ATTR_AOA_TYPE. Measurement result is reported in
+ *	QCA_WLAN_VENDOR_ATTR_MAC_ADDR and optionally frequency (MHz) in
+ *	QCA_WLAN_VENDOR_ATTR_FREQ (if not specified, locate peer in kernel
+ *	scan results cache and use the frequency from there).
+ *	Also specify measurement type in QCA_WLAN_VENDOR_ATTR_AOA_TYPE.
+ *	Measurement result is reported in
  *	QCA_NL80211_VENDOR_SUBCMD_AOA_MEAS_RESULT event.
  *
  * @QCA_NL80211_VENDOR_SUBCMD_AOA_ABORT_MEAS: Abort an AOA measurement. Specify
@@ -392,6 +395,8 @@ enum qca_wlan_vendor_attr {
 	/* Used in QCA_NL80211_VENDOR_SUBCMD_GET_CHAIN_RSSI command
 	 * to report the specific antenna RSSI value (unsigned 32 bit value) */
 	QCA_WLAN_VENDOR_ATTR_CHAIN_RSSI = 27,
+	/* Frequency in MHz, various uses. Unsigned 32 bit value */
+	QCA_WLAN_VENDOR_ATTR_FREQ = 28,
 	/* keep last */
 	QCA_WLAN_VENDOR_ATTR_AFTER_LAST,
 	QCA_WLAN_VENDOR_ATTR_MAX	= QCA_WLAN_VENDOR_ATTR_AFTER_LAST - 1,
@@ -1320,6 +1325,10 @@ enum qca_wlan_vendor_attr_loc_capa_flags {
  * @QCA_WLAN_VENDOR_ATTR_FTM_PEER_AOA_BURST_PERIOD: Request AOA
  *	measurement every <value> bursts. If 0 or not specified,
  *	AOA measurements will be disabled for this peer.
+ * @QCA_WLAN_VENDOR_ATTR_FTM_PEER_FREQ: Frequency in MHz where
+ *	the measurement frames are exchanged. Optional; if not
+ *	specified, try to locate the peer in the kernel scan
+ *	results cache and use frequency from there.
  */
 enum qca_wlan_vendor_attr_ftm_peer_info {
 	QCA_WLAN_VENDOR_ATTR_FTM_PEER_INVALID,
@@ -1328,6 +1337,7 @@ enum qca_wlan_vendor_attr_ftm_peer_info {
 	QCA_WLAN_VENDOR_ATTR_FTM_PEER_MEAS_PARAMS,
 	QCA_WLAN_VENDOR_ATTR_FTM_PEER_SECURE_TOKEN_ID,
 	QCA_WLAN_VENDOR_ATTR_FTM_PEER_AOA_BURST_PERIOD,
+	QCA_WLAN_VENDOR_ATTR_FTM_PEER_FREQ,
 	/* keep last */
 	QCA_WLAN_VENDOR_ATTR_FTM_PEER_AFTER_LAST,
 	QCA_WLAN_VENDOR_ATTR_FTM_PEER_MAX =