qcacmn: QCA vendor command for getting STA information

Add a QCA vendor subcommand QCA_NL80211_VENDOR_SUBCMD_GET_STA_INFO with
attributes defined in qca_wlan_vendor_attr_get_sta to get information
for BSS in STA mode or for peer STAs in AP mode. This vendor sub command
can be used to get STA information from driver to userspace.
The attributes defined in enum qca_wlan_vendor_attr_get_sta_info
are used to encapsulate required information.

Change-Id: I9747516de377a2be23cca6023f2e92f014e42ac2
CRs-Fixed: 2591613

os_if/linux/qca_vendor.h

@@ -34,6 +34,10 @@
 
 #define QCA_NL80211_VENDOR_ID           0x001374
 
+#ifndef BIT
+#define BIT(x) (1U << (x))
+#endif
+
 /**
  * enum qca_nl80211_vendor_subcmds: NL 80211 vendor sub command
  *
@@ -374,6 +378,13 @@
  *	coex chain mode from application/service.
  *	The attributes defined in enum qca_vendor_attr_btc_chain_mode are used
  *	to deliver the parameters.
+ * @QCA_NL80211_VENDOR_SUBCMD_GET_STA_INFO: This vendor subcommand is used to
+ *	get information of a station from driver to userspace. This command can
+ *	be used in both STA and AP modes. For STA mode, it provides information
+ *	of the current association when in connected state or the last
+ *	association when in disconnected state. For AP mode, only information
+ *	of the currently connected stations is available. This command uses
+ *	attributes defined in enum qca_wlan_vendor_attr_get_sta_info.
  * @QCA_NL80211_VENDOR_SUBCMD_REQUEST_SAR_LIMITS_EVENT: This acts as an event.
  *	Host drivers can request the user space entity to set the SAR power
  *	limits with this event. Accordingly, the user space entity is expected
@@ -623,6 +634,7 @@ enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_AVOID_FREQUENCY_EXT = 183,
 	QCA_NL80211_VENDOR_SUBCMD_ADD_STA_NODE = 184,
 	QCA_NL80211_VENDOR_SUBCMD_BTC_CHAIN_MODE = 185,
+	QCA_NL80211_VENDOR_SUBCMD_GET_STA_INFO = 186,
 	QCA_NL80211_VENDOR_SUBCMD_GET_SAR_LIMITS_EVENT = 187,
 	QCA_NL80211_VENDOR_SUBCMD_UPDATE_STA_INFO = 188,
 	QCA_NL80211_VENDOR_SUBCMD_DRIVER_DISCONNECT_REASON = 189,
@@ -8930,6 +8942,112 @@ enum qca_vendor_attr_btc_chain_mode {
 	QCA_VENDOR_ATTR_BTC_CHAIN_MODE_LAST - 1,
 };
 
+/**
+ * enum qca_vendor_wlan_sta_flags - Station feature flags
+ * Bits will be set to 1 if the corresponding features are enabled.
+ * @QCA_VENDOR_WLAN_STA_FLAG_AMPDU: AMPDU is enabled for the station
+ * @QCA_VENDOR_WLAN_STA_FLAG_TX_STBC: TX Space-time block coding is enabled
+    for the station
+ * @QCA_VENDOR_WLAN_STA_FLAG_RX_STBC: RX Space-time block coding is enabled
+    for the station
+ */
+enum qca_vendor_wlan_sta_flags {
+	QCA_VENDOR_WLAN_STA_FLAG_AMPDU = BIT(0),
+	QCA_VENDOR_WLAN_STA_FLAG_TX_STBC = BIT(1),
+	QCA_VENDOR_WLAN_STA_FLAG_RX_STBC = BIT(2),
+};
+
+/**
+ * enum qca_vendor_wlan_sta_guard_interval - Station guard interval
+ * @QCA_VENDOR_WLAN_STA_GI_800_NS: Legacy normal guard interval
+ * @QCA_VENDOR_WLAN_STA_GI_400_NS: Legacy short guard interval
+ * @QCA_VENDOR_WLAN_STA_GI_1600_NS: Guard interval used by HE
+ * @QCA_VENDOR_WLAN_STA_GI_3200_NS: Guard interval used by HE
+ */
+enum qca_vendor_wlan_sta_guard_interval {
+	QCA_VENDOR_WLAN_STA_GI_800_NS = 0,
+	QCA_VENDOR_WLAN_STA_GI_400_NS = 1,
+	QCA_VENDOR_WLAN_STA_GI_1600_NS = 2,
+	QCA_VENDOR_WLAN_STA_GI_3200_NS = 3,
+};
+
+/**
+ * enum qca_wlan_vendor_attr_get_sta_info - Defines attributes
+ * used by QCA_NL80211_VENDOR_SUBCMD_GET_STA_INFO vendor command.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_MAC:
+ * Required attribute in request for AP mode only, 6-byte MAC address,
+ * corresponding to the station's MAC address for which information is
+ * requested. For STA mode this is not required as the info always correspond
+ * to the self STA and the current/last association.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_FLAGS:
+ * Optionally used in response, u32 attribute, contains a bitmap of different
+ * fields defined in enum qca_vendor_wlan_sta_flags, used in AP mode only.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_GUARD_INTERVAL:
+ * Optionally used in response, u32 attribute, possible values are defined in
+ * enum qca_vendor_wlan_sta_guard_interval, used in AP mode only.
+ * Guard interval used by the station.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_RX_RETRY_COUNT:
+ * Optionally used in response, u32 attribute, used in AP mode only.
+ * Value indicates the number of data frames received from station with retry
+ * bit set to 1 in FC.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_RX_BC_MC_COUNT:
+ * Optionally used in response, u32 attribute, used in AP mode only.
+ * Counter for number of data frames with broadcast or multicast address in
+ * the destination address received from the station.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TX_RETRY_SUCCEED:
+ * Optionally used in response, u32 attribute, used in both STA and AP modes.
+ * Value indicates the number of data frames successfully transmitted only
+ * after retrying the packets and for which the TX status has been updated
+ * back to host from target.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TX_RETRY_EXHAUSTED:
+ * Optionally used in response, u32 attribute, used in both STA and AP mode.
+ * Value indicates the number of data frames not transmitted successfully even
+ * after retrying the packets for the number of times equal to the total number
+ * of retries allowed for that packet and for which the TX status has been
+ * updated back to host from target.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TARGET_TX_TOTAL:
+ * Optionally used in response, u32 attribute, used in AP mode only.
+ * Counter in the target for the number of data frames successfully transmitted
+ * to the station.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TARGET_TX_RETRY:
+ * Optionally used in response, u32 attribute, used in AP mode only.
+ * Value indicates the number of data frames successfully transmitted only
+ * after retrying the packets.
+ *
+ * @QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TARGET_TX_RETRY_EXHAUSTED:
+ * Optionally used in response, u32 attribute, used in both STA & AP mode.
+ * Value indicates the number of data frames not transmitted successfully even
+ * after retrying the packets for the number of times equal to the total number
+ * of retries allowed for that packet.
+ */
+enum qca_wlan_vendor_attr_get_sta_info {
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_INVALID = 0,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_MAC = 1,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_FLAGS = 2,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_GUARD_INTERVAL = 3,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_RX_RETRY_COUNT = 4,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_RX_BC_MC_COUNT = 5,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TX_RETRY_SUCCEED = 6,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TX_RETRY_EXHAUSTED = 7,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TARGET_TX_TOTAL = 8,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TARGET_TX_RETRY = 9,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_TARGET_TX_RETRY_EXHAUSTED = 10,
+
+	/* keep last */
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_MAX =
+		QCA_WLAN_VENDOR_ATTR_GET_STA_INFO_AFTER_LAST - 1,
+};
+
 /**
  * enum qca_disconnect_reason_codes - Specifies driver disconnect reason codes.
  * Used when the driver triggers the STA to disconnect from the AP.