Merge tag 'mac80211-next-for-john-2014-11-20' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg <johannes@sipsolutions.net> says:

"It has been a while since my last pull request, so we accumulated
another relatively large set of changes:
 * TDLS off-channel support set from Arik/Liad, with some support
   patches I did
 * custom regulatory fixes from Arik
 * minstrel VHT fix (and a small optimisation) from Felix
 * add back radiotap vendor namespace support (myself)
 * random MAC address scanning for cfg80211/mac80211/hwsim (myself)
 * CSA improvements (Luca)
 * WoWLAN Net Detect (wake on network found) support (Luca)
 * and lots of other smaller changes from many people"

Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 238 insertions, 5 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 5c3acd07acd9..bb748c4da5af 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1437,6 +1437,10 @@ struct cfg80211_ssid {
  * @aborted: (internal) scan request was notified as aborted
  * @notified: (internal) scan request was notified as done or aborted
  * @no_cck: used to send probe requests at non CCK rate in 2GHz band
+ * @mac_addr: MAC address used with randomisation
+ * @mac_addr_mask: MAC address mask used with randomisation, bits that
+ *	are 0 in the mask should be randomised, bits that are 1 should
+ *	be taken from the @mac_addr
  */
 struct cfg80211_scan_request {
 	struct cfg80211_ssid *ssids;
@@ -1451,6 +1455,9 @@ struct cfg80211_scan_request {
 
 	struct wireless_dev *wdev;
 
+	u8 mac_addr[ETH_ALEN] __aligned(2);
+	u8 mac_addr_mask[ETH_ALEN] __aligned(2);
+
 	/* internal */
 	struct wiphy *wiphy;
 	unsigned long scan_start;
@@ -1461,6 +1468,17 @@ struct cfg80211_scan_request {
 	struct ieee80211_channel *channels[0];
 };
 
+static inline void get_random_mask_addr(u8 *buf, const u8 *addr, const u8 *mask)
+{
+	int i;
+
+	get_random_bytes(buf, ETH_ALEN);
+	for (i = 0; i < ETH_ALEN; i++) {
+		buf[i] &= ~mask[i];
+		buf[i] |= addr[i] & mask[i];
+	}
+}
+
 /**
  * struct cfg80211_match_set - sets of attributes to match
  *
@@ -1494,6 +1512,10 @@ struct cfg80211_match_set {
  * @channels: channels to scan
  * @min_rssi_thold: for drivers only supporting a single threshold, this
  *	contains the minimum over all matchsets
+ * @mac_addr: MAC address used with randomisation
+ * @mac_addr_mask: MAC address mask used with randomisation, bits that
+ *	are 0 in the mask should be randomised, bits that are 1 should
+ *	be taken from the @mac_addr
  */
 struct cfg80211_sched_scan_request {
 	struct cfg80211_ssid *ssids;
@@ -1508,6 +1530,9 @@ struct cfg80211_sched_scan_request {
 	int n_match_sets;
 	s32 min_rssi_thold;
 
+	u8 mac_addr[ETH_ALEN] __aligned(2);
+	u8 mac_addr_mask[ETH_ALEN] __aligned(2);
+
 	/* internal */
 	struct wiphy *wiphy;
 	struct net_device *dev;
@@ -1940,6 +1965,7 @@ struct cfg80211_wowlan_tcp {
  * @rfkill_release: wake up when rfkill is released
  * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h.
  *	NULL if not configured.
+ * @nd_config: configuration for the scan to be used for net detect wake.
  */
 struct cfg80211_wowlan {
 	bool any, disconnect, magic_pkt, gtk_rekey_failure,
@@ -1948,6 +1974,7 @@ struct cfg80211_wowlan {
 	struct cfg80211_pkt_pattern *patterns;
 	struct cfg80211_wowlan_tcp *tcp;
 	int n_patterns;
+	struct cfg80211_sched_scan_request *nd_config;
 };
 
 /**
@@ -1980,6 +2007,35 @@ struct cfg80211_coalesce {
 };
 
 /**
+ * struct cfg80211_wowlan_nd_match - information about the match
+ *
+ * @ssid: SSID of the match that triggered the wake up
+ * @n_channels: Number of channels where the match occurred.  This
+ *	value may be zero if the driver can't report the channels.
+ * @channels: center frequencies of the channels where a match
+ *	occurred (in MHz)
+ */
+struct cfg80211_wowlan_nd_match {
+	struct cfg80211_ssid ssid;
+	int n_channels;
+	u32 channels[];
+};
+
+/**
+ * struct cfg80211_wowlan_nd_info - net detect wake up information
+ *
+ * @n_matches: Number of match information instances provided in
+ *	@matches.  This value may be zero if the driver can't provide
+ *	match information.
+ * @matches: Array of pointers to matches containing information about
+ *	the matches that triggered the wake up.
+ */
+struct cfg80211_wowlan_nd_info {
+	int n_matches;
+	struct cfg80211_wowlan_nd_match *matches[];
+};
+
+/**
  * struct cfg80211_wowlan_wakeup - wakeup report
  * @disconnect: woke up by getting disconnected
  * @magic_pkt: woke up by receiving magic packet
@@ -1998,6 +2054,7 @@ struct cfg80211_coalesce {
  * @tcp_match: TCP wakeup packet received
  * @tcp_connlost: TCP connection lost or failed to establish
  * @tcp_nomoretokens: TCP data ran out of tokens
+ * @net_detect: if not %NULL, woke up because of net detect
  */
 struct cfg80211_wowlan_wakeup {
 	bool disconnect, magic_pkt, gtk_rekey_failure,
@@ -2007,6 +2064,7 @@ struct cfg80211_wowlan_wakeup {
 	s32 pattern_idx;
 	u32 packet_present_len, packet_len;
 	const void *packet;
+	struct cfg80211_wowlan_nd_info *net_detect;
 };
 
 /**
@@ -2367,6 +2425,12 @@ struct cfg80211_qos_map {
  *	(invoked with the wireless_dev mutex held)
  * @leave_ocb: leave the current OCB network
  *	(invoked with the wireless_dev mutex held)
+ *
+ * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver
+ *	is responsible for continually initiating channel-switching operations
+ *	and returning to the base channel for communication with the AP.
+ * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both
+ *	peers must be on the base channel when the call completes.
  */
 struct cfg80211_ops {
 	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -2622,6 +2686,14 @@ struct cfg80211_ops {
 			     u16 admitted_time);
 	int	(*del_tx_ts)(struct wiphy *wiphy, struct net_device *dev,
 			     u8 tsid, const u8 *peer);
+
+	int	(*tdls_channel_switch)(struct wiphy *wiphy,
+				       struct net_device *dev,
+				       const u8 *addr, u8 oper_class,
+				       struct cfg80211_chan_def *chandef);
+	void	(*tdls_cancel_channel_switch)(struct wiphy *wiphy,
+					      struct net_device *dev,
+					      const u8 *addr);
 };
 
 /*
@@ -2796,6 +2868,7 @@ struct ieee80211_txrx_stypes {
  * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request
  * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure
  * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release
+ * @WIPHY_WOWLAN_NET_DETECT: supports wakeup on network detection
  */
 enum wiphy_wowlan_support_flags {
 	WIPHY_WOWLAN_ANY		= BIT(0),
@@ -2806,6 +2879,7 @@ enum wiphy_wowlan_support_flags {
 	WIPHY_WOWLAN_EAP_IDENTITY_REQ	= BIT(5),
 	WIPHY_WOWLAN_4WAY_HANDSHAKE	= BIT(6),
 	WIPHY_WOWLAN_RFKILL_RELEASE	= BIT(7),
+	WIPHY_WOWLAN_NET_DETECT		= BIT(8),
 };
 
 struct wiphy_wowlan_tcp_support {
@@ -2824,6 +2898,11 @@ struct wiphy_wowlan_tcp_support {
  * @pattern_max_len: maximum length of each pattern
  * @pattern_min_len: minimum length of each pattern
  * @max_pkt_offset: maximum Rx packet offset
+ * @max_nd_match_sets: maximum number of matchsets for net-detect,
+ *	similar, but not necessarily identical, to max_match_sets for
+ *	scheduled scans.
+ *	See &struct cfg80211_sched_scan_request.@match_sets for more
+ *	details.
  * @tcp: TCP wakeup support information
  */
 struct wiphy_wowlan_support {
@@ -2832,6 +2911,7 @@ struct wiphy_wowlan_support {
 	int pattern_max_len;
 	int pattern_min_len;
 	int max_pkt_offset;
+	int max_nd_match_sets;
 	const struct wiphy_wowlan_tcp_support *tcp;
 };
 
@@ -4719,6 +4799,20 @@ bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
 void cfg80211_ch_switch_notify(struct net_device *dev,
 			       struct cfg80211_chan_def *chandef);
 
+/*
+ * cfg80211_ch_switch_started_notify - notify channel switch start
+ * @dev: the device on which the channel switch started
+ * @chandef: the future channel definition
+ * @count: the number of TBTTs until the channel switch happens
+ *
+ * Inform the userspace about the channel switch that has just
+ * started, so that it can take appropriate actions (eg. starting
+ * channel switch on other vifs), if necessary.
+ */
+void cfg80211_ch_switch_started_notify(struct net_device *dev,
+				       struct cfg80211_chan_def *chandef,
+				       u8 count);
+
 /**
  * ieee80211_operating_class_to_band - convert operating class to band
  *
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 5f203a6a5e7e..cff3a26a9dae 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -882,6 +882,9 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info)
  *	subframes share the same sequence number. Reported subframes can be
  *	either regular MSDU or singly A-MSDUs. Subframes must not be
  *	interleaved with other frames.
+ * @RX_FLAG_RADIOTAP_VENDOR_DATA: This frame contains vendor-specific
+ *	radiotap data in the skb->data (before the frame) as described by
+ *	the &struct ieee80211_vendor_radiotap.
  */
 enum mac80211_rx_flags {
 	RX_FLAG_MMIC_ERROR		= BIT(0),
@@ -911,6 +914,7 @@ enum mac80211_rx_flags {
 	RX_FLAG_10MHZ			= BIT(28),
 	RX_FLAG_5MHZ			= BIT(29),
 	RX_FLAG_AMSDU_MORE		= BIT(30),
+	RX_FLAG_RADIOTAP_VENDOR_DATA	= BIT(31),
 };
 
 #define RX_FLAG_STBC_SHIFT		26
@@ -982,6 +986,39 @@ struct ieee80211_rx_status {
 };
 
 /**
+ * struct ieee80211_vendor_radiotap - vendor radiotap data information
+ * @present: presence bitmap for this vendor namespace
+ *	(this could be extended in the future if any vendor needs more
+ *	 bits, the radiotap spec does allow for that)
+ * @align: radiotap vendor namespace alignment. This defines the needed
+ *	alignment for the @data field below, not for the vendor namespace
+ *	description itself (which has a fixed 2-byte alignment)
+ *	Must be a power of two, and be set to at least 1!
+ * @oui: radiotap vendor namespace OUI
+ * @subns: radiotap vendor sub namespace
+ * @len: radiotap vendor sub namespace skip length, if alignment is done
+ *	then that's added to this, i.e. this is only the length of the
+ *	@data field.
+ * @pad: number of bytes of padding after the @data, this exists so that
+ *	the skb data alignment can be preserved even if the data has odd
+ *	length
+ * @data: the actual vendor namespace data
+ *
+ * This struct, including the vendor data, goes into the skb->data before
+ * the 802.11 header. It's split up in mac80211 using the align/oui/subns
+ * data.
+ */
+struct ieee80211_vendor_radiotap {
+	u32 present;
+	u8 align;
+	u8 oui[3];
+	u8 subns;
+	u8 pad;
+	u16 len;
+	u8 data[];
+} __packed;
+
+/**
  * enum ieee80211_conf_flags - configuration flags
  *
  * Flags to define PHY configuration options
@@ -1790,6 +1827,31 @@ struct ieee80211_scan_request {
 };
 
 /**
+ * struct ieee80211_tdls_ch_sw_params - TDLS channel switch parameters
+ *
+ * @sta: peer this TDLS channel-switch request/response came from
+ * @chandef: channel referenced in a TDLS channel-switch request
+ * @action_code: see &enum ieee80211_tdls_actioncode
+ * @status: channel-switch response status
+ * @timestamp: time at which the frame was received
+ * @switch_time: switch-timing parameter received in the frame
+ * @switch_timeout: switch-timing parameter received in the frame
+ * @tmpl_skb: TDLS switch-channel response template
+ * @ch_sw_tm_ie: offset of the channel-switch timing IE inside @tmpl_skb
+ */
+struct ieee80211_tdls_ch_sw_params {
+	struct ieee80211_sta *sta;
+	struct cfg80211_chan_def *chandef;
+	u8 action_code;
+	u32 status;
+	u32 timestamp;
+	u16 switch_time;
+	u16 switch_timeout;
+	struct sk_buff *tmpl_skb;
+	u32 ch_sw_tm_ie;
+};
+
+/**
  * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy
  *
  * @wiphy: the &struct wiphy which we want to query
@@ -2560,7 +2622,9 @@ enum ieee80211_reconfig_type {
  *
  * @sw_scan_start: Notifier function that is called just before a software scan
  *	is started. Can be NULL, if the driver doesn't need this notification.
- *	The callback can sleep.
+ *	The mac_addr parameter allows supporting NL80211_SCAN_FLAG_RANDOM_ADDR,
+ *	the driver may set the NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR flag if it
+ *	can use this parameter. The callback can sleep.
  *
  * @sw_scan_complete: Notifier function that is called just after a
  *	software scan finished. Can be NULL, if the driver doesn't need
@@ -2631,6 +2695,9 @@ enum ieee80211_reconfig_type {
  *	uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since
  *	otherwise the rate control algorithm is notified directly.
  *	Must be atomic.
+ * @sta_rate_tbl_update: Notifies the driver that the rate table changed. This
+ *	is only used if the configured rate control algorithm actually uses
+ *	the new rate table API, and is therefore optional. Must be atomic.
  *
  * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
  *	bursting) for a hardware TX queue.
@@ -2878,6 +2945,23 @@ enum ieee80211_reconfig_type {
  *
  * @get_txpower: get current maximum tx power (in dBm) based on configuration
  *	and hardware limits.
+ *
+ * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver
+ *	is responsible for continually initiating channel-switching operations
+ *	and returning to the base channel for communication with the AP. The
+ *	driver receives a channel-switch request template and the location of
+ *	the switch-timing IE within the template as part of the invocation.
+ *	The template is valid only within the call, and the driver can
+ *	optionally copy the skb for further re-use.
+ * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both
+ *	peers must be on the base channel when the call completes.
+ * @tdls_recv_channel_switch: a TDLS channel-switch related frame (request or
+ *	response) has been received from a remote peer. The driver gets
+ *	parameters parsed from the incoming frame and may use them to continue
+ *	an ongoing channel-switch operation. In addition, a channel-switch
+ *	response template is provided, together with the location of the
+ *	switch-timing IE within the template. The skb can only be used within
+ *	the function call.
  */
 struct ieee80211_ops {
 	void (*tx)(struct ieee80211_hw *hw,
@@ -2937,8 +3021,11 @@ struct ieee80211_ops {
 				struct ieee80211_scan_ies *ies);
 	int (*sched_scan_stop)(struct ieee80211_hw *hw,
 			       struct ieee80211_vif *vif);
-	void (*sw_scan_start)(struct ieee80211_hw *hw);
-	void (*sw_scan_complete)(struct ieee80211_hw *hw);
+	void (*sw_scan_start)(struct ieee80211_hw *hw,
+			      struct ieee80211_vif *vif,
+			      const u8 *mac_addr);
+	void (*sw_scan_complete)(struct ieee80211_hw *hw,
+				 struct ieee80211_vif *vif);
 	int (*get_stats)(struct ieee80211_hw *hw,
 			 struct ieee80211_low_level_stats *stats);
 	void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx,
@@ -2972,6 +3059,9 @@ struct ieee80211_ops {
 			      struct ieee80211_vif *vif,
 			      struct ieee80211_sta *sta,
 			      u32 changed);
+	void (*sta_rate_tbl_update)(struct ieee80211_hw *hw,
+				    struct ieee80211_vif *vif,
+				    struct ieee80211_sta *sta);
 	int (*conf_tx)(struct ieee80211_hw *hw,
 		       struct ieee80211_vif *vif, u16 ac,
 		       const struct ieee80211_tx_queue_params *params);
@@ -3089,6 +3179,18 @@ struct ieee80211_ops {
 	u32 (*get_expected_throughput)(struct ieee80211_sta *sta);
 	int (*get_txpower)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 			   int *dbm);
+
+	int (*tdls_channel_switch)(struct ieee80211_hw *hw,
+				   struct ieee80211_vif *vif,
+				   struct ieee80211_sta *sta, u8 oper_class,
+				   struct cfg80211_chan_def *chandef,
+				   struct sk_buff *tmpl_skb, u32 ch_sw_tm_ie);
+	void (*tdls_cancel_channel_switch)(struct ieee80211_hw *hw,
+					   struct ieee80211_vif *vif,
+					   struct ieee80211_sta *sta);
+	void (*tdls_recv_channel_switch)(struct ieee80211_hw *hw,
+					 struct ieee80211_vif *vif,
+					 struct ieee80211_tdls_ch_sw_params *params);
 };
 
 /**
@@ -3729,7 +3831,7 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
 /**
  * ieee80211_probereq_get - retrieve a Probe Request template
  * @hw: pointer obtained from ieee80211_alloc_hw().
- * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ * @src_addr: source MAC address
  * @ssid: SSID buffer
  * @ssid_len: length of SSID
  * @tailroom: tailroom to reserve at end of SKB for IEs
@@ -3740,7 +3842,7 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
  * Return: The Probe Request template. %NULL on error.
  */
 struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw,
-				       struct ieee80211_vif *vif,
+				       const u8 *src_addr,
 				       const u8 *ssid, size_t ssid_len,
 				       size_t tailroom);
 
@@ -4980,6 +5082,43 @@ void ieee80211_tdls_oper_request(struct ieee80211_vif *vif, const u8 *peer,
 				 u16 reason_code, gfp_t gfp);
 
 /**
+ * ieee80211_reserve_tid - request to reserve a specific TID
+ *
+ * There is sometimes a need (such as in TDLS) for blocking the driver from
+ * using a specific TID so that the FW can use it for certain operations such
+ * as sending PTI requests. To make sure that the driver doesn't use that TID,
+ * this function must be called as it flushes out packets on this TID and marks
+ * it as blocked, so that any transmit for the station on this TID will be
+ * redirected to the alternative TID in the same AC.
+ *
+ * Note that this function blocks and may call back into the driver, so it
+ * should be called without driver locks held. Also note this function should
+ * only be called from the driver's @sta_state callback.
+ *
+ * @sta: the station to reserve the TID for
+ * @tid: the TID to reserve
+ *
+ * Returns: 0 on success, else on failure
+ */
+int ieee80211_reserve_tid(struct ieee80211_sta *sta, u8 tid);
+
+/**
+ * ieee80211_unreserve_tid - request to unreserve a specific TID
+ *
+ * Once there is no longer any need for reserving a certain TID, this function
+ * should be called, and no longer will packets have their TID modified for
+ * preventing use of this TID in the driver.
+ *
+ * Note that this function blocks and acquires a lock, so it should be called
+ * without driver locks held. Also note this function should only be called
+ * from the driver's @sta_state callback.
+ *
+ * @sta: the station
+ * @tid: the TID to unreserve
+ */
+void ieee80211_unreserve_tid(struct ieee80211_sta *sta, u8 tid);
+
+/**
  * ieee80211_ie_split - split an IE buffer according to ordering
  *
  * @ies: the IE buffer