qcacmn: Vendor command to configure/trigger the roam events

Introduce a new vendor command QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS
that aims to configure/trigger the roam events from the driver.

Change-Id: Ifd9464cc8cb485890c8d171dc136d377f7a59fa1
CRs-Fixed: 3028404

os_if/linux/qca_vendor.h

@@ -529,6 +529,13 @@
  *     to resume the host and forward the respective frames to the monitor
  *     interface. Please note that such a request to get the frames over the
  *     monitor interface will have a definite power implications.
+ *
+ * @QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS: This vendor subcommand is used both
+ *     as a request to set the driver/firmware with the parameters to trigger
+ *     the roaming events, and also used by the driver/firmware to pass on the
+ *     various roam events to userspace.
+ *     Applicable only for the STA mode. The attributes used with this command
+ *     are defined in enum qca_wlan_vendor_attr_roam_events.
  */
 
 enum qca_nl80211_vendor_subcmds {
@@ -767,6 +774,7 @@ enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_MDNS_OFFLOAD = 200,
 	QCA_NL80211_VENDOR_SUBCMD_DIAG_DATA = 201,
 	QCA_NL80211_VENDOR_SUBCMD_SET_MONITOR_MODE = 202,
+	QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS = 203,
 };
 
 enum qca_wlan_vendor_tos {
@@ -12422,4 +12430,158 @@ enum qca_wlan_vendor_attr_set_monitor_mode {
 
 };
 
+/**
+ * enum qca_wlan_vendor_roam_scan_state - Roam scan state flags.
+ * Bits will be set to 1 if the corresponding state is enabled.
+ *
+ * @QCA_VENDOR_WLAN_ROAM_SCAN_STATE_START: Scan Start.
+ * @QCA_VENDOR_WLAN_ROAM_SCAN_STATE_END: Scan end.
+ */
+enum qca_wlan_vendor_roam_scan_state {
+	QCA_WLAN_VENDOR_ROAM_SCAN_STATE_START = BIT(0),
+	QCA_WLAN_VENDOR_ROAM_SCAN_STATE_END = BIT(1),
+};
+
+/**
+ * enum qca_wlan_vendor_roam_event_type - Roam event type flags.
+ * Bits will be set to 1 if the corresponding event is notified.
+ *
+ * @QCA_WLAN_VENDOR_ROAM_EVENT_TRIGGER_REASON: Represents that the roam event
+ * carries the trigger reason. When set, it is expected that the roam event
+ * carries the respective reason via the attribute
+ * QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_TRIGGER_REASON. This event also carries
+ * the BSSID, RSSI, frequency info of the AP to which the roam is attempted.
+ *
+ * @QCA_WLAN_VENDOR_ROAM_EVENT_FAIL_REASON: Represents that the roam event
+ * carries the roam fail reason. When set, it is expected that the roam event
+ * carries the respective reason via the attribute
+ * QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_FAIL_REASON. This event also carries the
+ * BSSID, RSSI, frequency info of the AP to which the roam was attempted.
+ *
+ * @QCA_WLAN_VENDOR_ROAM_EVENT_INVOKE_FAIL_REASON: Represents that the roam
+ * event carries the roam invoke fail reason. When set, it is expected that
+ * the roam event carries the respective reason via the attribute
+ * QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_INVOKE_FAIL_REASON.
+ *
+ * @QCA_WLAN_VENDOR_ROAM_EVENT_SCAN_STATE: Represents that the roam event
+ * carries the roam scan state. When set, it is expected that the roam event
+ * carries the respective scan state via the attribute
+ * QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_ROAM_SCAN_STATE and the corresponding
+ * frequency info via QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_ROAM_SCAN_FREQ_LIST.
+ */
+enum qca_wlan_vendor_roam_event_type {
+	QCA_WLAN_VENDOR_ROAM_EVENT_TRIGGER_REASON = BIT(0),
+	QCA_WLAN_VENDOR_ROAM_EVENT_FAIL_REASON = BIT(1),
+	QCA_WLAN_VENDOR_ROAM_EVENT_INVOKE_FAIL_REASON = BIT(2),
+	QCA_WLAN_VENDOR_ROAM_EVENT_ROAM_SCAN_STATE = BIT(3),
+};
+
+/**
+ * enum qca_wlan_vendor_attr_roam_events_candidate_info: Roam candidate info.
+ * Referred by QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_BSSID: 6-byte MAC address
+ * representing the BSSID of the AP to which the Roam is attempted.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_RSSI: Signed 32-bit value
+ * in dBm, signifying the RSSI of the candidate BSSID to which the Roaming is
+ * attempted.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_FREQ: u32, Frequency in MHz
+ * on which the roam is attempted.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_FAIL_REASON: u32, used in
+ * STA mode only. This represents the roam fail reason for the last failed
+ * roaming attempt by the firmware for the specific BSSID. Different roam
+ * failure reason codes are specified in enum qca_vendor_roam_fail_reasons.
+ */
+enum qca_wlan_vendor_attr_roam_events_candidate_info {
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_INVALID = 0,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_BSSID = 1,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_RSSI = 2,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_FREQ = 3,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_FAIL_REASON = 4,
+
+	/* keep last */
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_MAX =
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO_AFTER_LAST - 1,
+};
+
+/**
+ * enum qca_wlan_vendor_attr_roam_events - Used by the
+ * vendor command QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS to either configure the
+ * roam events to the driver or notify these events from the driver.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CONFIGURE: u8 attribute. Configures the
+ * driver/firmware to enable/disable the notification of roam events. It's a
+ * mandatory attribute and used only in the request from the userspace to the
+ * host driver. 1-Enable, 0-Disable.
+ * If the roaming is totally offloaded to the firmware, this request when
+ * enabled shall mandate the firmware to notify all the relevant roam events
+ * represented by the below attributes. If the host is in the suspend mode,
+ * the behavior of the firmware to notify these events is guided by
+ * QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_DEVICE_STATE, and if the request is to get
+ * these events in the suspend state, the firmware is expected to wake up the
+ * host before the respective events are notified. Please note that such a
+ * request to get the events in the suspend state will have a definite power
+ * implication.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_SUSPEND_STATE: flag attribute. Represents
+ * that the roam events need to be notified in the suspend state too. By
+ * default, these roam events are notified in the resume state. With this flag,
+ * the roam events are notified in both resume and suspend states.
+ * This attribute is used in the request from the userspace to the host driver.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_TYPE: u32, used in STA mode only.
+ * Represents the different roam event types, signified by the enum
+ * qca_wlan_vendor_roam_event_type.
+ * Each bit of this attribute represents the different roam even types reported
+ * through QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS.
+ * This is sent as an event through QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_TRIGGER_REASON: u32, used in STA
+ * mode only. This represents the roam trigger reason for the last roaming
+ * attempted by the firmware. Each bit of this attribute represents the
+ * different roam trigger reason code which are defined in enum
+ * qca_vendor_roam_triggers.
+ * This is sent as an event through QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_INVOKE_FAIL_REASON: u32, used in
+ * STA mode only. This represents the roam invoke fail reason for the last
+ * failed roam invoke. Different roam invoke failure reason codes
+ * are specified in enum qca_vendor_roam_invoke_fail_reasons.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO: Array of candidates info
+ * for which the roam is attempted. Each entry is a nested attribute defined
+ * by enum qca_wlan_vendor_attr_roam_events_candidate_info.
+ * This is sent as an event through QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_ROAM_SCAN_STATE: u8 attribute. Represents
+ * the scan state on which the roam events need to be notified. The values for
+ * this attribute are referred from enum qca_wlan_vendor_roam_scan_state.
+ * This is sent as an event through QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_ROAM_SCAN_FREQ_LIST: Nested attribute of
+ * u32 values. List of frequencies in MHz considered for a roam scan.
+ * This is sent as an event through QCA_NL80211_VENDOR_SUBCMD_ROAM_EVENTS.
+ */
+
+enum qca_wlan_vendor_attr_roam_events {
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_INVALID = 0,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CONFIGURE = 1,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_SUSPEND_STATE = 2,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_TYPE = 3,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_TRIGGER_REASON = 4,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_INVOKE_FAIL_REASON = 5,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_CANDIDATE_INFO = 6,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_ROAM_SCAN_STATE = 7,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_ROAM_SCAN_FREQ_LIST = 8,
+
+	/* keep last */
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_MAX =
+	QCA_WLAN_VENDOR_ATTR_ROAM_EVENTS_AFTER_LAST - 1,
+};
+
 #endif