Add QCA vendor subcommand to trigger Channel Usage Request

Add a new QCA vendor subcommand QCA_NL80211_VENDOR_SUBCMD_CHAN_USAGE_REQ
to support Channel Usage Request. It carries channel usage information
for BSSs that are not infrastructure BSSs or an off channel TDLS direct
link.

Implementation and scheduling of Channel Usage frames are present in the
driver/firmware. One of the key reason for this is that the TSF
timestamp required to be filled in these frames is available only in the
firmware.  So, this interface is used to configure the required
parameters to the driver/firmware for Channel Usage Request frame.

This uses attributes defined in enum
qca_wlan_vendor_attr_chan_usage_req.

Signed-off-by: Shivani Baranwal <quic_shivbara@quicinc.com>

src/common/qca-vendor.h

@@ -1290,6 +1290,14 @@ enum qca_radiotap_vendor_ids {
  *
  *	The attributes used with this command are defined in
  *	enum qca_wlan_vendor_attr_connect_ext.
+ *
+ * @QCA_NL80211_VENDOR_SUBCMD_CHAN_USAGE_REQ: Vendor subcommand to request
+ *	transmission of a channel usage request. It carries channel usage
+ *	information for BSSs that are not infrastructure BSSs or an off channel
+ *	TDLS direct link.
+ *
+ *	The attributes used with this command are defined in
+ *	enum qca_wlan_vendor_attr_chan_usage_req.
  */
 enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_UNSPEC = 0,
@@ -1525,6 +1533,7 @@ enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_USD = 249,
 	QCA_NL80211_VENDOR_SUBCMD_CONNECT_EXT = 250,
 	QCA_NL80211_VENDOR_SUBCMD_SET_P2P_MODE = 251,
+	QCA_NL80211_VENDOR_SUBCMD_CHAN_USAGE_REQ = 252,
 };
 
 /* Compatibility defines for previously used subcmd names.
@@ -10778,7 +10787,8 @@ enum qca_wlan_twt_setup_state {
  * TWT (Target Wake Time) setup request. These attributes are sent as part of
  * %QCA_WLAN_VENDOR_ATTR_WIFI_TEST_CONFIG_TWT_SETUP and
  * %QCA_NL80211_VENDOR_SUBCMD_WIFI_TEST_CONFIGURATION. Also used by
- * attributes through %QCA_NL80211_VENDOR_SUBCMD_CONFIG_TWT.
+ * attributes through %QCA_NL80211_VENDOR_SUBCMD_CONFIG_TWT and
+ * %QCA_NL80211_VENDOR_SUBCMD_CHAN_USAGE_REQ.
  *
  * @QCA_WLAN_VENDOR_ATTR_TWT_SETUP_BCAST: Flag attribute.
  * Disable (flag attribute not present) - Individual TWT
@@ -18292,4 +18302,82 @@ enum qca_wlan_vendor_attr_set_p2p_mode {
 	QCA_WLAN_VENDOR_ATTR_SET_P2P_MODE_AFTER_LAST - 1,
 };
 
+/**
+ * enum qca_wlan_vendor_attr_chan_usage_req_chan_list: Attributes used inside
+ * nested attributes %QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST_CHAN: u8 attribute. Indicates
+ * the channel number of the channel list entry.
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST_OP_CLASS: u8 attribute.
+ * Indicates the operating class of the channel list entry.
+ */
+enum qca_wlan_vendor_attr_chan_usage_req_chan_list {
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST_INVALID = 0,
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST_CHAN = 1,
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST_OP_CLASS = 2,
+
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST_MAX =
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST_AFTER_LAST - 1,
+};
+
+/**
+ * enum qca_wlan_vendor_attr_chan_usage_req_mode: Defines the values used
+ * with %QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_MODE.
+ *
+ * @QCA_CHAN_USAGE_MODE_UNAVAILABILITY_INDICATION: Mode set by STA to indicate
+ * the AP about its unavailability during a peer-to-peer TWT agreement.
+ *
+ * @QCA_CHAN_USAGE_MODE_CHANNEL_SWITCH_REQ: Mode set by the STA that is in a
+ * channel-usage-aidable BSS to request a channel switch. Other Channel Usage
+ * elements are not required. Optional HT/VHT/HE Capabilities are present.
+ */
+enum qca_wlan_vendor_attr_chan_usage_req_mode {
+	QCA_CHAN_USAGE_MODE_UNAVAILABILITY_INDICATION = 3,
+	QCA_CHAN_USAGE_MODE_CHANNEL_SWITCH_REQ = 4,
+};
+
+/**
+ * enum qca_wlan_vendor_attr_chan_usage_req: Attributes used by vendor command
+ * %QCA_NL80211_VENDOR_SUBCMD_CHAN_USAGE_REQ.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_MODE: Required u8 attribute. Identifies
+ * the usage of the channel list entry provided in the channel usage request.
+ * Channel switch request and unavailability channel usage modes are
+ * configured on a STA/P2P Client.
+ * See enum qca_wlan_vendor_attr_chan_usage_req_mode for attribute values.
+ * See IEEE P802.11-REVme/D7.0, 9.4.2.84, Table 9-268 for more information.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST: Required array of nested
+ * attributes containing channel usage parameters.
+ * Required when channel usage mode is Channel-usage-aidable BSS channel
+ * switch request.
+ * See enum qca_wlan_vendor_attr_req_chan_list for nested attributes.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_UNAVAILABILITY_CONFIG_PARAMS: Nested
+ * attribute representing the parameters configured for unavailability
+ * indication. Required when channel usage mode is unavailability indication.
+ *
+ * Below attributes from enum qca_wlan_vendor_attr_twt_setup are used inside
+ * this nested attribute:
+ * %QCA_WLAN_VENDOR_ATTR_TWT_SETUP_RESPONDER_PM_MODE,
+ * %QCA_WLAN_VENDOR_ATTR_TWT_SETUP_REQ_TYPE,
+ * %QCA_WLAN_VENDOR_ATTR_TWT_SETUP_TRIGGER,
+ * %QCA_WLAN_VENDOR_ATTR_TWT_SETUP_FLOW_TYPE,
+ * %QCA_WLAN_VENDOR_ATTR_TWT_SETUP_WAKE_INTVL_EXP,
+ * %QCA_WLAN_VENDOR_ATTR_TWT_SETUP_PROTECTION,
+ * %QCA_WLAN_VENDOR_ATTR_TWT_SETUP_WAKE_DURATION,
+ * %QCA_WLAN_VENDOR_ATTR_TWT_SETUP_WAKE_INTVL_MANTISSA.
+ */
+enum qca_wlan_vendor_attr_chan_usage_req {
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_INVALID = 0,
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_MODE = 1,
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_CHAN_LIST = 2,
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_UNAVAILABILITY_CONFIG_PARAMS = 3,
+
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_MAX =
+	QCA_WLAN_VENDOR_ATTR_CHAN_USAGE_REQ_AFTER_LAST - 1,
+};
+
 #endif /* QCA_VENDOR_H */