Add QCA vendor attribute for DO_ACS to allow using existing scan entries

Add a new QCA vendor attribute
QCA_WLAN_VENDOR_ATTR_ACS_LAST_SCAN_AGEOUT_TIME to
QCA_NL80211_VENDOR_SUBCMD_DO_ACS and opportunistically optimize time
taken for ACS scan. Avoid scanning the channels which were scanned
within last QCA_WLAN_VENDOR_ATTR_ACS_LAST_SCAN_AGEOUT_TIME milliseconds
and use scan results from the scan results cache for ACS scoring. For
other channels, perform ACS scan and use the received scan results.

Signed-off-by: Jouni Malinen <quic_jouni@quicinc.com>

diff --git a/src/common/qca-vendor.h b/src/common/qca-vendor.h
index 210f2b223fd23c14b34b49e78e91ecd9f4d98347..122262889e9e189587f48d6246797a72b29f39a9 100644 (file)
--- a/src/common/qca-vendor.h
+++ b/src/common/qca-vendor.h
@@ -1496,6 +1496,12 @@ enum qca_wlan_vendor_attr_p2p_listen_offload {
  * Used with command to configure ACS operation for EHT mode.
  * Disable (flag attribute not present) - EHT disabled and
  * Enable (flag attribute present) - EHT enabled.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ACS_LAST_SCAN_AGEOUT_TIME: Optional (u32).
+ * Used with command to configure how older scan can be considered for ACS
+ * scoring. In case scan was performed on a partial set of channels configured
+ * with this command within last QCA_WLAN_VENDOR_ATTR_ACS_LAST_SCAN_AGEOUT_TIME
+ * (in ms), scan only the remaining channels.
  */
 enum qca_wlan_vendor_attr_acs_offload {
        QCA_WLAN_VENDOR_ATTR_ACS_CHANNEL_INVALID = 0,
@@ -1518,6 +1524,7 @@ enum qca_wlan_vendor_attr_acs_offload {
        QCA_WLAN_VENDOR_ATTR_ACS_EDMG_CHANNEL = 17,
        QCA_WLAN_VENDOR_ATTR_ACS_PUNCTURE_BITMAP = 18,
        QCA_WLAN_VENDOR_ATTR_ACS_EHT_ENABLED = 19,
+       QCA_WLAN_VENDOR_ATTR_ACS_LAST_SCAN_AGEOUT_TIME = 20,
 
        /* keep last */
        QCA_WLAN_VENDOR_ATTR_ACS_AFTER_LAST,