qcacmn: Add support for cfr data transport mode

User sets CFR data transport mode using vendor command
QCA_NL80211_VENDOR_SUBCMD_PEER_CFR_CAPTURE_CFG. By default
CFR data transport mode is relayfs, user uses vendor command
attr QCA_WLAN_VENDOR_ATTR_PEER_CFR_DATA_TRANSPORT_MODE to set
transport mode QCA_WLAN_VENDOR_CFR_DATA_RELAY_FS or
QCA_WLAN_VENDOR_CFR_DATA_NETLINK_EVENTS.
If user sets QCA_WLAN_VENDOR_ATTR_PEER_CFR_DATA_RECEIVER_PID
attr in QCA_NL80211_VENDOR_SUBCMD_PEER_CFR_CAPTURE_CFG vendor
command then hosts uses RECEIVER_PID to send unicast NL events
for CFR data.

Change-Id: I40e896fad8af24e761fcbedeba761f4a3815f0b8
CRs-Fixed: 2952095

os_if/linux/qca_vendor.h

@@ -314,7 +314,9 @@
  * @QCA_NL80211_VENDOR_SUBCMD_PEER_CFR_CAPTURE_CFG: This command is used to
  *	configure parameters per peer to capture Channel Frequency Response
  *	(CFR) and enable Periodic CFR capture. The attributes for this command
- *	are defined in enum qca_wlan_vendor_peer_cfr_capture_attr.
+ *	are defined in enum qca_wlan_vendor_peer_cfr_capture_attr. This command
+ *	can also be used to send CFR data from the driver to userspace when
+ *	netlink events are used to send CFR data.
  * @QCA_NL80211_VENDOR_SUBCMD_GET_FW_STATE: Sub command to get firmware state.
  *	The returned firmware state is specified in the attribute
  *	QCA_WLAN_VENDOR_ATTR_FW_STATE.
@@ -9384,6 +9386,22 @@ enum qca_wlan_vendor_attr_nan_params {
 		QCA_WLAN_VENDOR_ATTR_NAN_PARAMS_AFTER_LAST - 1
 };
 
+/**
+ * enum qca_wlan_vendor_cfr_data_transport_modes - Defines QCA vendor CFR data
+ * transport modes and is used by attribute
+ * QCA_WLAN_VENDOR_ATTR_PEER_CFR_DATA_TRANSPORT_MODE as part of vendor command
+ * QCA_NL80211_VENDOR_SUBCMD_PEER_CFR_CAPTURE_CFG.
+ * @QCA_WLAN_VENDOR_CFR_DATA_RELAY_FS: Use RELAY FS to send CFR data.
+ * @QCA_WLAN_VENDOR_CFR_DATA_NETLINK_EVENTS: Use netlink events to send CFR
+ * data. The data shall be encapsulated within
+ * QCA_WLAN_VENDOR_ATTR_PEER_CFR_RESP_DATA along withe vendor sub command
+ * QCA_NL80211_VENDOR_SUBCMD_PEER_CFR_CAPTURE_CFG as an asynchronous event.
+ */
+enum qca_wlan_vendor_cfr_data_transport_modes {
+	QCA_WLAN_VENDOR_CFR_DATA_RELAY_FS = 0,
+	QCA_WLAN_VENDOR_CFR_DATA_NETLINK_EVENTS = 1,
+};
+
 /**
  * enum qca_wlan_vendor_cfr_method - QCA vendor CFR methods used by
  * attribute QCA_WLAN_VENDOR_ATTR_PEER_CFR_METHOD as part of vendor
@@ -9581,6 +9599,27 @@ enum qca_wlan_vendor_cfr_capture_type {
  * IEEE 802.11(2016) 9.2.4.1.3 Type and Subtype subfields.
  * This is for CFR version 2 only.
  *
+ * @QCA_WLAN_VENDOR_ATTR_PEER_CFR_DATA_TRANSPORT_MODE: Optional (u8)
+ * Userspace can use this attribute to specify the driver about which transport
+ * mode shall be used by the driver to send CFR data to userspace. Uses values
+ * from enum qca_wlan_vendor_cfr_data_transport_modes. When this attribute is
+ * not present, driver shall choose the default transport mechanism which is
+ * QCA_WLAN_VENDOR_CFR_DATA_RELAY_FS.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_PEER_CFR_DATA_RECEIVER_PID: Optional (u32)
+ * Userspace can use this attribute to specify the nl port id of the application
+ * which receives the CFR data and processes it further so that the drivers can
+ * unicast the NL events to a specific application. Optionally included when
+ * QCA_WLAN_VENDOR_ATTR_PEER_CFR_DATA_TRANSPORT_MODE is set to
+ * QCA_WLAN_VENDOR_CFR_DATA_NETLINK_EVENTS, not required otherwise. The drivers
+ * shall multicast the netlink events when this attribute is not included.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_PEER_CFR_RESP_DATA: Required (NLA_BINARY).
+ * This attribute will be used by the driver to encapsulate and send CFR data
+ * to userspace along with QCA_NL80211_VENDOR_SUBCMD_PEER_CFR_CAPTURE_CFG as an
+ * asynchronous event when the driver is configured to send CFR data using NL
+ * events with %QCA_WLAN_VENDOR_CFR_DATA_NETLINK_EVENTS
+ *
  */
 enum qca_wlan_vendor_peer_cfr_capture_attr {
 	QCA_WLAN_VENDOR_ATTR_PEER_CFR_CAPTURE_INVALID = 0,
@@ -9609,6 +9648,9 @@ enum qca_wlan_vendor_peer_cfr_capture_attr {
 	QCA_WLAN_VENDOR_ATTR_PEER_CFR_GROUP_MGMT_FILTER = 23,
 	QCA_WLAN_VENDOR_ATTR_PEER_CFR_GROUP_CTRL_FILTER = 24,
 	QCA_WLAN_VENDOR_ATTR_PEER_CFR_GROUP_DATA_FILTER = 25,
+	QCA_WLAN_VENDOR_ATTR_PEER_CFR_DATA_TRANSPORT_MODE = 26,
+	QCA_WLAN_VENDOR_ATTR_PEER_CFR_DATA_RECEIVER_PID = 27,
+	QCA_WLAN_VENDOR_ATTR_PEER_CFR_RESP_DATA = 28,
 
 	/* Keep last */
 	QCA_WLAN_VENDOR_ATTR_PEER_CFR_AFTER_LAST,

os_if/linux/wlan_cfg80211.h

@@ -141,6 +141,8 @@
  * @QCA_NL80211_VENDOR_SUBCMD_MBSSID_TX_VDEV_STATUS_INDEX:
  *	MBSSID TX VDEV status index
  * @QCA_NL80211_VENDOR_SUBCMD_THERMAL_INDEX: Report thermal event index
+ * @QCA_NL80211_VENDOR_SUBCMD_CONFIG_TWT_INDEX: TWT config index
+ * @QCA_NL80211_VENDOR_SUBCMD_PEER_CFR_CAPTURE_CFG_INDEX: CFR data event index
  */
 
 enum qca_nl80211_vendor_subcmds_index {
@@ -237,6 +239,9 @@ enum qca_nl80211_vendor_subcmds_index {
 #ifdef WLAN_SUPPORT_TWT
 	QCA_NL80211_VENDOR_SUBCMD_CONFIG_TWT_INDEX,
 #endif
+#ifdef WLAN_CFR_ENABLE
+	QCA_NL80211_VENDOR_SUBCMD_PEER_CFR_CAPTURE_CFG_INDEX,
+#endif
 };
 
 #if !defined(SUPPORT_WDEV_CFG80211_VENDOR_EVENT_ALLOC) && \