qcacmn: Add new attr for QCA_NL80211_VENDOR_SUBCMD_ROAM

Userspace can configure different roam control params as
defined in qca_vendor_attr_roam_control through the roam subcmd
QCA_NL80211_VENDOR_SUBCMD_ROAM and the below attributes:
QCA_ATTR_ROAM_CONTROL_SCAN_FREQ_SCHEME
QCA_ATTR_ROAM_CONTROL_CONNECTED_RSSI_THRESHOLD
QCA_ATTR_ROAM_CONTROL_CANDIDATE_RSSI_THRESHOLD
QCA_ATTR_ROAM_CONTROL_USER_REASON

Introduce above new attributes for roam subcommand.

Change-Id: I680ac7973cbe282673cf8cc065a7b643d4503d5e
CRs-Fixed: 2729127

os_if/linux/qca_vendor.h

@@ -2836,6 +2836,30 @@ enum qca_scan_freq_list_type {
 	QCA_SPECIFIC_SCAN_FREQ_LIST = 2,
 };
 
+/**
+ * enum qca_roam_scan_scheme: scan scheme
+ *
+ * @QCA_ROAM_SCAN_SCHEME_NO_SCAN: No Frequencies specified to scan.
+ *	Indicates the driver to not scan on a Roam Trigger scenario, but
+ *	Disconnect.e.g., On a BTM request from the AP driver/firmware shall
+ *	disconnect from the current connected AP by notifying a failure
+ *	code in the BTM response.
+ *
+ * @QCA_ROAM_SCAN_SCHEME_PARTIAL_SCAN: Indicates the driver/firmware to
+ *	trigger partial frequency scans. These frequencies are the ones learnt
+ *	or maintained by the driver based on the probability of finding the
+ *	BSSID's in the ESS for which the roaming is triggered.
+ *
+ * @QCA_ROAM_SCAN_SCHEME_FULL_SCAN: Indicates the driver/firmware to
+ *	trigger the scan on all the valid frequencies to find the better
+ *	candidates to roam.
+ */
+enum qca_roam_scan_scheme {
+	QCA_ROAM_SCAN_SCHEME_NO_SCAN = 0,
+	QCA_ROAM_SCAN_SCHEME_PARTIAL_SCAN = 1,
+	QCA_ROAM_SCAN_SCHEME_FULL_SCAN = 2,
+};
+
 /**
  * enum qca_vendor_attr_scan_freq_list_scheme: Frequency list scheme
  *
@@ -3047,6 +3071,25 @@ enum qca_vendor_attr_roam_candidate_selection_criteria {
  *
  *	Clears the selection criteria configured in the driver when specified
  *	with clear command.
+ *
+ * @QCA_ATTR_ROAM_CONTROL_SCAN_SCHEME: Unsigned 32-bit value.
+ *	Represents value of scan frequency scheme from
+ *      enum qca_roam_scan_scheme.
+ *
+ * @QCA_ATTR_ROAM_CONTROL_CONNECTED_RSSI_THRESHOLD: Signed 32-bit value in dBm,
+ *	signifying the RSSI threshold of the current connected AP, indicating
+ *	the driver to trigger roam only when the current connected AP's RSSI
+ *	is lesser than this threshold.
+ *
+ * @QCA_ATTR_ROAM_CONTROL_CANDIDATE_RSSI_THRESHOLD: Signed 32-bit value in dBm,
+ *	signifying the RSSI threshold of the candidate AP, indicating
+ *	the driver to trigger roam only to the candidate AP with RSSI
+ *	better than this threshold.
+ *
+ * @QCA_ATTR_ROAM_CONTROL_USER_REASON: Unsigned 32-bit value. Represents the
+ *	user triggered reason code to be sent to the AP in response to AP's
+ *	request to trigger the roam if the roaming cannot be triggered.
+ *	Applies to all the scenarios of AP assisted roaming (e.g., BTM).
  */
 enum qca_vendor_attr_roam_control {
 	QCA_ATTR_ROAM_CONTROL_ENABLE = 1,
@@ -3057,6 +3100,11 @@ enum qca_vendor_attr_roam_control {
 	QCA_ATTR_ROAM_CONTROL_FULL_SCAN_PERIOD = 6,
 	QCA_ATTR_ROAM_CONTROL_TRIGGERS = 7,
 	QCA_ATTR_ROAM_CONTROL_SELECTION_CRITERIA = 8,
+	QCA_ATTR_ROAM_CONTROL_SCAN_SCHEME = 9,
+	QCA_ATTR_ROAM_CONTROL_CONNECTED_RSSI_THRESHOLD = 10,
+	QCA_ATTR_ROAM_CONTROL_CANDIDATE_RSSI_THRESHOLD = 11,
+	QCA_ATTR_ROAM_CONTROL_USER_REASON = 12,
+	/* 13 - 20 : Reserved for QCA */
 
 	/* keep last */
 	QCA_ATTR_ROAM_CONTROL_AFTER_LAST,