openwrt-xburst/package/network/utils/iw/patches/001-nl80211_h_sync.patch

--- a/nl80211.h
+++ b/nl80211.h
@@ -118,8 +118,9 @@
  *	to get a list of all present wiphys.
  * @NL80211_CMD_SET_WIPHY: set wiphy parameters, needs %NL80211_ATTR_WIPHY or
  *	%NL80211_ATTR_IFINDEX; can be used to set %NL80211_ATTR_WIPHY_NAME,
- *	%NL80211_ATTR_WIPHY_TXQ_PARAMS, %NL80211_ATTR_WIPHY_FREQ,
- *	%NL80211_ATTR_WIPHY_CHANNEL_TYPE, %NL80211_ATTR_WIPHY_RETRY_SHORT,
+ *	%NL80211_ATTR_WIPHY_TXQ_PARAMS, %NL80211_ATTR_WIPHY_FREQ (and the
+ *	attributes determining the channel width; this is used for setting
+ *	monitor mode channel),  %NL80211_ATTR_WIPHY_RETRY_SHORT,
  *	%NL80211_ATTR_WIPHY_RETRY_LONG, %NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
  *	and/or %NL80211_ATTR_WIPHY_RTS_THRESHOLD.
  *	However, for setting the channel, see %NL80211_CMD_SET_CHANNEL
@@ -171,7 +172,7 @@
  *	%NL80211_ATTR_AKM_SUITES, %NL80211_ATTR_PRIVACY,
  *	%NL80211_ATTR_AUTH_TYPE and %NL80211_ATTR_INACTIVITY_TIMEOUT.
  *	The channel to use can be set on the interface or be given using the
- *	%NL80211_ATTR_WIPHY_FREQ and %NL80211_ATTR_WIPHY_CHANNEL_TYPE attrs.
+ *	%NL80211_ATTR_WIPHY_FREQ and the attributes determining channel width.
  * @NL80211_CMD_NEW_BEACON: old alias for %NL80211_CMD_START_AP
  * @NL80211_CMD_STOP_AP: Stop AP operation on the given interface
  * @NL80211_CMD_DEL_BEACON: old alias for %NL80211_CMD_STOP_AP
@@ -401,8 +402,7 @@
  *	a response while being associated to an AP on another channel.
  *	%NL80211_ATTR_IFINDEX is used to specify which interface (and thus
  *	radio) is used. %NL80211_ATTR_WIPHY_FREQ is used to specify the
- *	frequency for the operation and %NL80211_ATTR_WIPHY_CHANNEL_TYPE may be
- *	optionally used to specify additional channel parameters.
+ *	frequency for the operation.
  *	%NL80211_ATTR_DURATION is used to specify the duration in milliseconds
  *	to remain on the channel. This command is also used as an event to
  *	notify when the requested duration starts (it may take a while for the
@@ -440,12 +440,11 @@
  *	as an event indicating reception of a frame that was not processed in
  *	kernel code, but is for us (i.e., which may need to be processed in a
  *	user space application). %NL80211_ATTR_FRAME is used to specify the
- *	frame contents (including header). %NL80211_ATTR_WIPHY_FREQ (and
- *	optionally %NL80211_ATTR_WIPHY_CHANNEL_TYPE) is used to indicate on
- *	which channel the frame is to be transmitted or was received. If this
- *	channel is not the current channel (remain-on-channel or the
- *	operational channel) the device will switch to the given channel and
- *	transmit the frame, optionally waiting for a response for the time
+ *	frame contents (including header). %NL80211_ATTR_WIPHY_FREQ is used
+ *	to indicate on which channel the frame is to be transmitted or was
+ *	received. If this channel is not the current channel (remain-on-channel
+ *	or the operational channel) the device will switch to the given channel
+ *	and transmit the frame, optionally waiting for a response for the time
  *	specified using %NL80211_ATTR_DURATION. When called, this operation
  *	returns a cookie (%NL80211_ATTR_COOKIE) that will be included with the
  *	TX status event pertaining to the TX request.
@@ -473,8 +472,8 @@
  *	command is used as an event to indicate the that a trigger level was
  *	reached.
  * @NL80211_CMD_SET_CHANNEL: Set the channel (using %NL80211_ATTR_WIPHY_FREQ
- *	and %NL80211_ATTR_WIPHY_CHANNEL_TYPE) the given interface (identifed
- *	by %NL80211_ATTR_IFINDEX) shall operate on.
+ *	and the attributes determining channel width) the given interface
+ *	(identifed by %NL80211_ATTR_IFINDEX) shall operate on.
  *	In case multiple channels are supported by the device, the mechanism
  *	with which it switches channels is implementation-defined.
  *	When a monitor interface is given, it can only switch channel while
@@ -526,6 +525,12 @@
  *	of PMKSA caching dandidates.
  *
  * @NL80211_CMD_TDLS_OPER: Perform a high-level TDLS command (e.g. link setup).
+ *	In addition, this can be used as an event to request userspace to take
+ *	actions on TDLS links (set up a new link or tear down an existing one).
+ *	In such events, %NL80211_ATTR_TDLS_OPERATION indicates the requested
+ *	operation, %NL80211_ATTR_MAC contains the peer MAC address, and
+ *	%NL80211_ATTR_REASON_CODE the reason code to be used (only with
+ *	%NL80211_TDLS_TEARDOWN).
  * @NL80211_CMD_TDLS_MGMT: Send a TDLS management frame.
  *
  * @NL80211_CMD_UNEXPECTED_FRAME: Used by an application controlling an AP
@@ -562,8 +567,24 @@
  *
  * @NL80211_CMD_CH_SWITCH_NOTIFY: An AP or GO may decide to switch channels
  *	independently of the userspace SME, send this event indicating
- *	%NL80211_ATTR_IFINDEX is now on %NL80211_ATTR_WIPHY_FREQ with
- *	%NL80211_ATTR_WIPHY_CHANNEL_TYPE.
+ *	%NL80211_ATTR_IFINDEX is now on %NL80211_ATTR_WIPHY_FREQ and the
+ *	attributes determining channel width.
+ *
+ * @NL80211_CMD_START_P2P_DEVICE: Start the given P2P Device, identified by
+ *	its %NL80211_ATTR_WDEV identifier. It must have been created with
+ *	%NL80211_CMD_NEW_INTERFACE previously. After it has been started, the
+ *	P2P Device can be used for P2P operations, e.g. remain-on-channel and
+ *	public action frame TX.
+ * @NL80211_CMD_STOP_P2P_DEVICE: Stop the given P2P Device, identified by
+ *	its %NL80211_ATTR_WDEV identifier.
+ *
+ * @NL80211_CMD_CONN_FAILED: connection request to an AP failed; used to
+ *	notify userspace that AP has rejected the connection request from a
+ *	station, due to particular reason. %NL80211_ATTR_CONN_FAILED_REASON
+ *	is used for this.
+ *
+ * @NL80211_CMD_SET_MCAST_RATE: Change the rate used to send multicast frames
+ *	for IBSS or MESH vif.
  *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
@@ -708,6 +729,13 @@ enum nl80211_commands {
 
 	NL80211_CMD_CH_SWITCH_NOTIFY,
 
+	NL80211_CMD_START_P2P_DEVICE,
+	NL80211_CMD_STOP_P2P_DEVICE,
+
+	NL80211_CMD_CONN_FAILED,
+
+	NL80211_CMD_SET_MCAST_RATE,
+
 	/* add new commands above here */
 
 	/* used to define NL80211_CMD_MAX below */
@@ -744,14 +772,26 @@ enum nl80211_commands {
  *	/sys/class/ieee80211/<phyname>/index
  * @NL80211_ATTR_WIPHY_NAME: wiphy name (used for renaming)
  * @NL80211_ATTR_WIPHY_TXQ_PARAMS: a nested array of TX queue parameters
- * @NL80211_ATTR_WIPHY_FREQ: frequency of the selected channel in MHz
+ * @NL80211_ATTR_WIPHY_FREQ: frequency of the selected channel in MHz,
+ *	defines the channel together with the (deprecated)
+ *	%NL80211_ATTR_WIPHY_CHANNEL_TYPE attribute or the attributes
+ *	%NL80211_ATTR_CHANNEL_WIDTH and if needed %NL80211_ATTR_CENTER_FREQ1
+ *	and %NL80211_ATTR_CENTER_FREQ2
+ * @NL80211_ATTR_CHANNEL_WIDTH: u32 attribute containing one of the values
+ *	of &enum nl80211_chan_width, describing the channel width. See the
+ *	documentation of the enum for more information.
+ * @NL80211_ATTR_CENTER_FREQ1: Center frequency of the first part of the
+ *	channel, used for anything but 20 MHz bandwidth
+ * @NL80211_ATTR_CENTER_FREQ2: Center frequency of the second part of the
+ *	channel, used only for 80+80 MHz bandwidth
  * @NL80211_ATTR_WIPHY_CHANNEL_TYPE: included with NL80211_ATTR_WIPHY_FREQ
- *	if HT20 or HT40 are allowed (i.e., 802.11n disabled if not included):
+ *	if HT20 or HT40 are to be used (i.e., HT disabled if not included):
  *	NL80211_CHAN_NO_HT = HT not allowed (i.e., same as not including
  *		this attribute)
  *	NL80211_CHAN_HT20 = HT20 only
  *	NL80211_CHAN_HT40MINUS = secondary channel is below the primary channel
  *	NL80211_CHAN_HT40PLUS = secondary channel is above the primary channel
+ *	This attribute is now deprecated.
  * @NL80211_ATTR_WIPHY_RETRY_SHORT: TX retry limit for frames whose length is
  *	less than or equal to the RTS threshold; allowed range: 1..255;
  *	dot11ShortRetryLimit; u8
@@ -1251,6 +1291,25 @@ enum nl80211_commands {
  *	was used to provide the hint. For the different types of
  *	allowed user regulatory hints see nl80211_user_reg_hint_type.
  *
+ * @NL80211_ATTR_CONN_FAILED_REASON: The reason for which AP has rejected
+ *	the connection request from a station. nl80211_connect_failed_reason
+ *	enum has different reasons of connection failure.
+ *
+ * @NL80211_ATTR_SAE_DATA: SAE elements in Authentication frames. This starts
+ *	with the Authentication transaction sequence number field.
+ *
+ * @NL80211_ATTR_VHT_CAPABILITY: VHT Capability information element (from
+ *	association request when used with NL80211_CMD_NEW_STATION)
+ *
+ * @NL80211_ATTR_SCAN_FLAGS: scan request control flags (u32)
+ *
+ * @NL80211_ATTR_P2P_CTWINDOW: P2P GO Client Traffic Window (u8), used with
+ *	the START_AP and SET_BSS commands
+ * @NL80211_ATTR_P2P_OPPPS: P2P GO opportunistic PS (u8), used with the
+ *	START_AP and SET_BSS commands. This can have the values 0 or 1;
+ *	if not given in START_AP 0 is assumed, if not given in SET_BSS
+ *	no change is made.
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -1506,6 +1565,23 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_USER_REG_HINT_TYPE,
 
+	NL80211_ATTR_CONN_FAILED_REASON,
+
+	NL80211_ATTR_SAE_DATA,
+
+	NL80211_ATTR_VHT_CAPABILITY,
+
+	NL80211_ATTR_SCAN_FLAGS,
+
+	NL80211_ATTR_CHANNEL_WIDTH,
+	NL80211_ATTR_CENTER_FREQ1,
+	NL80211_ATTR_CENTER_FREQ2,
+
+	NL80211_ATTR_P2P_CTWINDOW,
+	NL80211_ATTR_P2P_OPPPS,
+
+	NL80211_ATTR_WIPHY_ANTENNA_GAIN,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,
@@ -1549,6 +1625,7 @@ enum nl80211_attrs {
 #define NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY	16
 #define NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY	24
 #define NL80211_HT_CAPABILITY_LEN		26
+#define NL80211_VHT_CAPABILITY_LEN		12
 
 #define NL80211_MAX_NR_CIPHER_SUITES		5
 #define NL80211_MAX_NR_AKM_SUITES		2
@@ -1575,6 +1652,10 @@ enum nl80211_attrs {
  * @NL80211_IFTYPE_MESH_POINT: mesh point
  * @NL80211_IFTYPE_P2P_CLIENT: P2P client
  * @NL80211_IFTYPE_P2P_GO: P2P group owner
+ * @NL80211_IFTYPE_P2P_DEVICE: P2P device interface type, this is not a netdev
+ *	and therefore can't be created in the normal ways, use the
+ *	%NL80211_CMD_START_P2P_DEVICE and %NL80211_CMD_STOP_P2P_DEVICE
+ *	commands to create and destroy one
  * @NL80211_IFTYPE_MAX: highest interface type number currently defined
  * @NUM_NL80211_IFTYPES: number of defined interface types
  *
@@ -1593,6 +1674,7 @@ enum nl80211_iftype {
 	NL80211_IFTYPE_MESH_POINT,
 	NL80211_IFTYPE_P2P_CLIENT,
 	NL80211_IFTYPE_P2P_GO,
+	NL80211_IFTYPE_P2P_DEVICE,
 
 	/* keep last */
 	NUM_NL80211_IFTYPES,
@@ -1664,10 +1746,15 @@ struct nl80211_sta_flag_update {
  * @__NL80211_RATE_INFO_INVALID: attribute number 0 is reserved
  * @NL80211_RATE_INFO_BITRATE: total bitrate (u16, 100kbit/s)
  * @NL80211_RATE_INFO_MCS: mcs index for 802.11n (u8)
- * @NL80211_RATE_INFO_40_MHZ_WIDTH: 40 Mhz dualchannel bitrate
+ * @NL80211_RATE_INFO_40_MHZ_WIDTH: 40 MHz dualchannel bitrate
  * @NL80211_RATE_INFO_SHORT_GI: 400ns guard interval
  * @NL80211_RATE_INFO_BITRATE32: total bitrate (u32, 100kbit/s)
  * @NL80211_RATE_INFO_MAX: highest rate_info number currently defined
+ * @NL80211_RATE_INFO_VHT_MCS: MCS index for VHT (u8)
+ * @NL80211_RATE_INFO_VHT_NSS: number of streams in VHT (u8)
+ * @NL80211_RATE_INFO_80_MHZ_WIDTH: 80 MHz VHT rate
+ * @NL80211_RATE_INFO_80P80_MHZ_WIDTH: 80+80 MHz VHT rate
+ * @NL80211_RATE_INFO_160_MHZ_WIDTH: 160 MHz VHT rate
  * @__NL80211_RATE_INFO_AFTER_LAST: internal use
  */
 enum nl80211_rate_info {
@@ -1677,6 +1764,11 @@ enum nl80211_rate_info {
 	NL80211_RATE_INFO_40_MHZ_WIDTH,
 	NL80211_RATE_INFO_SHORT_GI,
 	NL80211_RATE_INFO_BITRATE32,
+	NL80211_RATE_INFO_VHT_MCS,
+	NL80211_RATE_INFO_VHT_NSS,
+	NL80211_RATE_INFO_80_MHZ_WIDTH,
+	NL80211_RATE_INFO_80P80_MHZ_WIDTH,
+	NL80211_RATE_INFO_160_MHZ_WIDTH,
 
 	/* keep last */
 	__NL80211_RATE_INFO_AFTER_LAST,
@@ -1744,6 +1836,8 @@ enum nl80211_sta_bss_param {
  * @NL80211_STA_INFO_STA_FLAGS: Contains a struct nl80211_sta_flag_update.
  * @NL80211_STA_INFO_BEACON_LOSS: count of times beacon loss was detected (u32)
  * @NL80211_STA_INFO_T_OFFSET: timing offset with respect to this STA (s64)
+ * @NL80211_STA_INFO_CHAIN_SIGNAL: per-chain signal strength of last PPDU
+ * @NL80211_STA_INFO_CHAIN_SIGNAL_AVG: per-chain signal strength average
  * @__NL80211_STA_INFO_AFTER_LAST: internal
  * @NL80211_STA_INFO_MAX: highest possible station info attribute
  */
@@ -1768,6 +1862,8 @@ enum nl80211_sta_info {
 	NL80211_STA_INFO_STA_FLAGS,
 	NL80211_STA_INFO_BEACON_LOSS,
 	NL80211_STA_INFO_T_OFFSET,
+	NL80211_STA_INFO_CHAIN_SIGNAL,
+	NL80211_STA_INFO_CHAIN_SIGNAL_AVG,
 
 	/* keep last */
 	__NL80211_STA_INFO_AFTER_LAST,
@@ -2385,6 +2481,15 @@ enum nl80211_ac {
 #define NL80211_TXQ_Q_BE	NL80211_AC_BE
 #define NL80211_TXQ_Q_BK	NL80211_AC_BK
 
+/**
+ * enum nl80211_channel_type - channel type
+ * @NL80211_CHAN_NO_HT: 20 MHz, non-HT channel
+ * @NL80211_CHAN_HT20: 20 MHz HT channel
+ * @NL80211_CHAN_HT40MINUS: HT40 channel, secondary channel
+ *	below the control channel
+ * @NL80211_CHAN_HT40PLUS: HT40 channel, secondary channel
+ *	above the control channel
+ */
 enum nl80211_channel_type {
 	NL80211_CHAN_NO_HT,
 	NL80211_CHAN_HT20,
@@ -2393,6 +2498,32 @@ enum nl80211_channel_type {
 };
 
 /**
+ * enum nl80211_chan_width - channel width definitions
+ *
+ * These values are used with the %NL80211_ATTR_CHANNEL_WIDTH
+ * attribute.
+ *
+ * @NL80211_CHAN_WIDTH_20_NOHT: 20 MHz, non-HT channel
+ * @NL80211_CHAN_WIDTH_20: 20 MHz HT channel
+ * @NL80211_CHAN_WIDTH_40: 40 MHz channel, the %NL80211_ATTR_CENTER_FREQ1
+ *	attribute must be provided as well
+ * @NL80211_CHAN_WIDTH_80: 80 MHz channel, the %NL80211_ATTR_CENTER_FREQ1
+ *	attribute must be provided as well
+ * @NL80211_CHAN_WIDTH_80P80: 80+80 MHz channel, the %NL80211_ATTR_CENTER_FREQ1
+ *	and %NL80211_ATTR_CENTER_FREQ2 attributes must be provided as well
+ * @NL80211_CHAN_WIDTH_160: 160 MHz channel, the %NL80211_ATTR_CENTER_FREQ1
+ *	attribute must be provided as well
+ */
+enum nl80211_chan_width {
+	NL80211_CHAN_WIDTH_20_NOHT,
+	NL80211_CHAN_WIDTH_20,
+	NL80211_CHAN_WIDTH_40,
+	NL80211_CHAN_WIDTH_80,
+	NL80211_CHAN_WIDTH_80P80,
+	NL80211_CHAN_WIDTH_160,
+};
+
+/**
  * enum nl80211_bss - netlink attributes for a BSS
  *
  * @__NL80211_BSS_INVALID: invalid
@@ -2460,6 +2591,7 @@ enum nl80211_bss_status {
  * @NL80211_AUTHTYPE_SHARED_KEY: Shared Key authentication (WEP only)
  * @NL80211_AUTHTYPE_FT: Fast BSS Transition (IEEE 802.11r)
  * @NL80211_AUTHTYPE_NETWORK_EAP: Network EAP (some Cisco APs and mainly LEAP)
+ * @NL80211_AUTHTYPE_SAE: Simultaneous authentication of equals
  * @__NL80211_AUTHTYPE_NUM: internal
  * @NL80211_AUTHTYPE_MAX: maximum valid auth algorithm
  * @NL80211_AUTHTYPE_AUTOMATIC: determine automatically (if necessary by
@@ -2471,6 +2603,7 @@ enum nl80211_auth_type {
 	NL80211_AUTHTYPE_SHARED_KEY,
 	NL80211_AUTHTYPE_FT,
 	NL80211_AUTHTYPE_NETWORK_EAP,
+	NL80211_AUTHTYPE_SAE,
 
 	/* keep last */
 	__NL80211_AUTHTYPE_NUM,
@@ -2994,12 +3127,40 @@ enum nl80211_ap_sme_features {
  * @NL80211_FEATURE_CELL_BASE_REG_HINTS: This driver has been tested
  *	to work properly to suppport receiving regulatory hints from
  *	cellular base stations.
+ * @NL80211_FEATURE_P2P_DEVICE_NEEDS_CHANNEL: If this is set, an active
+ *	P2P Device (%NL80211_IFTYPE_P2P_DEVICE) requires its own channel
+ *	in the interface combinations, even when it's only used for scan
+ *	and remain-on-channel. This could be due to, for example, the
+ *	remain-on-channel implementation requiring a channel context.
+ * @NL80211_FEATURE_SAE: This driver supports simultaneous authentication of
+ *	equals (SAE) with user space SME (NL80211_CMD_AUTHENTICATE) in station
+ *	mode
+ * @NL80211_FEATURE_LOW_PRIORITY_SCAN: This driver supports low priority scan
+ * @NL80211_FEATURE_SCAN_FLUSH: Scan flush is supported
+ * @NL80211_FEATURE_AP_SCAN: Support scanning using an AP vif
+ * @NL80211_FEATURE_VIF_TXPOWER: The driver supports per-vif TX power setting
+ * @NL80211_FEATURE_NEED_OBSS_SCAN: The driver expects userspace to perform
+ *	OBSS scans and generate 20/40 BSS coex reports. This flag is used only
+ *	for drivers implementing the CONNECT API, for AUTH/ASSOC it is implied.
+ * @NL80211_FEATURE_P2P_GO_CTWIN: P2P GO implementation supports CT Window
+ *	setting
+ * @NL80211_FEATURE_P2P_GO_OPPPS: P2P GO implementation supports opportunistic
+ *	powersave
  */
 enum nl80211_feature_flags {
-	NL80211_FEATURE_SK_TX_STATUS	= 1 << 0,
-	NL80211_FEATURE_HT_IBSS		= 1 << 1,
-	NL80211_FEATURE_INACTIVITY_TIMER = 1 << 2,
-	NL80211_FEATURE_CELL_BASE_REG_HINTS = 1 << 3,
+	NL80211_FEATURE_SK_TX_STATUS			= 1 << 0,
+	NL80211_FEATURE_HT_IBSS				= 1 << 1,
+	NL80211_FEATURE_INACTIVITY_TIMER		= 1 << 2,
+	NL80211_FEATURE_CELL_BASE_REG_HINTS		= 1 << 3,
+	NL80211_FEATURE_P2P_DEVICE_NEEDS_CHANNEL	= 1 << 4,
+	NL80211_FEATURE_SAE				= 1 << 5,
+	NL80211_FEATURE_LOW_PRIORITY_SCAN		= 1 << 6,
+	NL80211_FEATURE_SCAN_FLUSH			= 1 << 7,
+	NL80211_FEATURE_AP_SCAN				= 1 << 8,
+	NL80211_FEATURE_VIF_TXPOWER			= 1 << 9,
+	NL80211_FEATURE_NEED_OBSS_SCAN			= 1 << 10,
+	NL80211_FEATURE_P2P_GO_CTWIN			= 1 << 11,
+	NL80211_FEATURE_P2P_GO_OPPPS			= 1 << 12,
 };
 
 /**
@@ -3023,4 +3184,36 @@ enum nl80211_probe_resp_offload_support_
 	NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U =	1<<3,
 };
 
+/**
+ * enum nl80211_connect_failed_reason - connection request failed reasons
+ * @NL80211_CONN_FAIL_MAX_CLIENTS: Maximum number of clients that can be
+ *	handled by the AP is reached.
+ * @NL80211_CONN_FAIL_BLOCKED_CLIENT: Client's MAC is in the AP's blocklist.
+ */
+enum nl80211_connect_failed_reason {
+	NL80211_CONN_FAIL_MAX_CLIENTS,
+	NL80211_CONN_FAIL_BLOCKED_CLIENT,
+};
+
+/**
+ * enum nl80211_scan_flags -  scan request control flags
+ *
+ * Scan request control flags are used to control the handling
+ * of NL80211_CMD_TRIGGER_SCAN and NL80211_CMD_START_SCHED_SCAN
+ * requests.
+ *
+ * @NL80211_SCAN_FLAG_LOW_PRIORITY: scan request has low priority
+ * @NL80211_SCAN_FLAG_FLUSH: flush cache before scanning
+ * @NL80211_SCAN_FLAG_AP: force a scan even if the interface is configured
+ *	as AP and the beaconing has already been configured. This attribute is
+ *	dangerous because will destroy stations performance as a lot of frames
+ *	will be lost while scanning off-channel, therefore it must be used only
+ *	when really needed
+ */
+enum nl80211_scan_flags {
+	NL80211_SCAN_FLAG_LOW_PRIORITY			= 1<<0,
+	NL80211_SCAN_FLAG_FLUSH				= 1<<1,
+	NL80211_SCAN_FLAG_AP				= 1<<2,
+};
+
 #endif /* __LINUX_NL80211_H */