Add QCA vendor interface to query usable channels

Add QCA vendor interface for userspace to get information of usable
channels for different interface types from the driver/firmware.

Signed-off-by: Vamsi Krishna <vamsin@codeaurora.org>

src/common/qca-vendor.h

@@ -704,6 +704,14 @@ enum qca_radiotap_vendor_ids {
  *	configure the concurrent session policies when multiple STA interfaces
  *	are (getting) active. The attributes used by this command are defined
  *	in enum qca_wlan_vendor_attr_concurrent_sta_policy.
+ *
+ * @QCA_NL80211_VENDOR_SUBCMD_USABLE_CHANNELS: Userspace can use this command
+ *	to query usable channels for different interface types such as STA,
+ *	AP, P2P GO, P2P Client, NAN, etc. The driver shall report all usable
+ *	channels in the response based on country code, different static
+ *	configurations, concurrency combinations, etc. The attributes used
+ *	with this command are defined in
+ *	enum qca_wlan_vendor_attr_usable_channels.
  */
 enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_UNSPEC = 0,
@@ -891,6 +899,7 @@ enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_WIFI_FW_STATS = 195,
 	QCA_NL80211_VENDOR_SUBCMD_MBSSID_TX_VDEV_STATUS = 196,
 	QCA_NL80211_VENDOR_SUBCMD_CONCURRENT_MULTI_STA_POLICY = 197,
+	QCA_NL80211_VENDOR_SUBCMD_USABLE_CHANNELS = 198,
 };
 
 enum qca_wlan_vendor_attr {
@@ -10818,4 +10827,107 @@ enum qca_sta_connect_fail_reason_codes {
 	QCA_STA_CONNECT_FAIL_REASON_ASSOC_NO_RESP_RECEIVED = 7,
 };
 
+/**
+ * enum qca_wlan_vendor_usable_channels_filter - Bitmask of different
+ * filters defined in this enum are used in attribute
+ * %QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_FILTER_MASK.
+ *
+ * @QCA_WLAN_VENDOR_FILTER_CELLULAR_COEX: When this bit is set, the driver
+ * shall filter the channels which are not usable because of coexistence with
+ * cellular radio.
+ * @QCA_WLAN_VENDOR_FILTER_WLAN_CONCURRENCY: When this bit is set, the driver
+ * shall filter the channels which are not usable because of existing active
+ * interfaces in the driver and will result in Multi Channel Concurrency, etc.
+ *
+ */
+enum qca_wlan_vendor_usable_channels_filter {
+	QCA_WLAN_VENDOR_FILTER_CELLULAR_COEX = 0,
+	QCA_WLAN_VENDOR_FILTER_WLAN_CONCURRENCY = 1,
+};
+
+/**
+ * enum qca_wlan_vendor_attr_chan_info - Attributes used inside
+ * %QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_CHAN_INFO nested attribute.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_INFO_PRIMARY_FREQ:
+ * u32 attribute, required. Indicates the center frequency of the primary
+ * channel in MHz.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_INFO_SEG0_FREQ:
+ * u32 attribute. Indicates the center frequency of the primary segment of the
+ * channel in MHz. This attribute is required when reporting 40 MHz, 80 MHz,
+ * 160 MHz, and 320 MHz channels.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_INFO_SEG1_FREQ:
+ * u32 attribute. Indicates the center frequency of the secondary segment of
+ * 80+80 channel in MHz. This attribute is required only when
+ * QCA_WLAN_VENDOR_ATTR_CHAN_INFO_BANDWIDTH is set to NL80211_CHAN_WIDTH_80P80.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_INFO_BANDWIDTH:
+ * u32 attribute, required. Indicates the bandwidth of the channel, possible
+ * values are defined in enum nl80211_chan_width.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_CHAN_INFO_IFACE_MODE_MASK:
+ * u32 attribute, required. Indicates all the interface types for which this
+ * channel is usable. This attribute encapsulates bitmasks of interface types
+ * defined in enum nl80211_iftype.
+ *
+ */
+enum qca_wlan_vendor_attr_chan_info {
+	QCA_WLAN_VENDOR_ATTR_CHAN_INFO_INVALID = 0,
+	QCA_WLAN_VENDOR_ATTR_CHAN_INFO_PRIMARY_FREQ = 1,
+	QCA_WLAN_VENDOR_ATTR_CHAN_INFO_SEG0_FREQ = 2,
+	QCA_WLAN_VENDOR_ATTR_CHAN_INFO_SEG1_FREQ = 3,
+	QCA_WLAN_VENDOR_ATTR_CHAN_INFO_BANDWIDTH = 4,
+	QCA_WLAN_VENDOR_ATTR_CHAN_INFO_IFACE_MODE_MASK = 5,
+
+	/* keep last */
+	QCA_WLAN_VENDOR_ATTR_CHAN_INFO_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_CHAN_INFO_MAX =
+	QCA_WLAN_VENDOR_ATTR_CHAN_INFO_AFTER_LAST - 1,
+};
+
+/**
+ * enum qca_wlan_vendor_attr_usable_channels - Attributes used by
+ * %QCA_NL80211_VENDOR_SUBCMD_USABLE_CHANNELS vendor command.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_BAND_MASK:
+ * u32 attribute. Indicates the bands from which the channels should be reported
+ * in response. This attribute encapsulates bit masks of bands defined in enum
+ * nl80211_band. Optional attribute, if not present in the request the driver
+ * shall return channels from all supported bands.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_IFACE_MODE_MASK:
+ * u32 attribute. Indicates all the interface types for which the usable
+ * channels information is requested. This attribute encapsulates bitmasks of
+ * interface types defined in enum nl80211_iftype. Optional attribute, if not
+ * present in the request the driver shall send information of all supported
+ * interface modes.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_FILTER_MASK:
+ * u32 attribute. This attribute carries information of all filters that shall
+ * be applied while populating usable channels information by the driver. This
+ * attribute carries bit masks of different filters defined in enum
+ * qca_wlan_vendor_usable_channels_filter. Optional attribute, if not present
+ * in the request the driver shall send information of channels without applying
+ * any of the filters that can be configured through this attribute.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_CHAN_INFO:
+ * Nested attribute. This attribute shall be used by the driver to send
+ * usability information of each channel. The attributes defined in enum
+ * qca_wlan_vendor_attr_chan_info are used inside this attribute.
+ */
+enum qca_wlan_vendor_attr_usable_channels {
+	QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_INVALID = 0,
+	QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_BAND_MASK = 1,
+	QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_IFACE_MODE_MASK = 2,
+	QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_FILTER_MASK = 3,
+	QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_CHAN_INFO = 4,
+
+	/* keep last */
+	QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_MAX =
+	QCA_WLAN_VENDOR_ATTR_USABLE_CHANNELS_AFTER_LAST - 1,
+};
+
 #endif /* QCA_VENDOR_H */