Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

2 files changed, 173 insertions, 63 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 8a1aec54e68..e78db2cf3d1 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -306,6 +306,88 @@ struct key_params {
 };
 
 /**
+ * struct cfg80211_chan_def - channel definition
+ * @chan: the (control) channel
+ * @width: channel width
+ * @center_freq1: center frequency of first segment
+ * @center_freq2: center frequency of second segment
+ *	(only with 80+80 MHz)
+ */
+struct cfg80211_chan_def {
+	struct ieee80211_channel *chan;
+	enum nl80211_chan_width width;
+	u32 center_freq1;
+	u32 center_freq2;
+};
+
+/**
+ * cfg80211_get_chandef_type - return old channel type from chandef
+ * @chandef: the channel definition
+ *
+ * Returns the old channel type (NOHT, HT20, HT40+/-) from a given
+ * chandef, which must have a bandwidth allowing this conversion.
+ */
+static inline enum nl80211_channel_type
+cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef)
+{
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		return NL80211_CHAN_NO_HT;
+	case NL80211_CHAN_WIDTH_20:
+		return NL80211_CHAN_HT20;
+	case NL80211_CHAN_WIDTH_40:
+		if (chandef->center_freq1 > chandef->chan->center_freq)
+			return NL80211_CHAN_HT40PLUS;
+		return NL80211_CHAN_HT40MINUS;
+	default:
+		WARN_ON(1);
+		return NL80211_CHAN_NO_HT;
+	}
+}
+
+/**
+ * cfg80211_chandef_create - create channel definition using channel type
+ * @chandef: the channel definition struct to fill
+ * @channel: the control channel
+ * @chantype: the channel type
+ *
+ * Given a channel type, create a channel definition.
+ */
+void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
+			     struct ieee80211_channel *channel,
+			     enum nl80211_channel_type chantype);
+
+/**
+ * cfg80211_chandef_identical - check if two channel definitions are identical
+ * @chandef1: first channel definition
+ * @chandef2: second channel definition
+ *
+ * Returns %true if the channels defined by the channel definitions are
+ * identical, %false otherwise.
+ */
+static inline bool
+cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1,
+			   const struct cfg80211_chan_def *chandef2)
+{
+	return (chandef1->chan == chandef2->chan &&
+		chandef1->width == chandef2->width &&
+		chandef1->center_freq1 == chandef2->center_freq1 &&
+		chandef1->center_freq2 == chandef2->center_freq2);
+}
+
+/**
+ * cfg80211_chandef_compatible - check if two channel definitions are compatible
+ * @chandef1: first channel definition
+ * @chandef2: second channel definition
+ *
+ * Returns %NULL if the given channel definitions are incompatible,
+ * chandef1 or chandef2 otherwise.
+ */
+const struct cfg80211_chan_def *
+cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1,
+			    const struct cfg80211_chan_def *chandef2);
+
+/**
  * enum survey_info_flags - survey information flags
  *
  * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in
@@ -426,8 +508,7 @@ struct cfg80211_beacon_data {
  *
  * Used to configure an AP interface.
  *
- * @channel: the channel to start the AP on
- * @channel_type: the channel type to use
+ * @chandef: defines the channel to use
  * @beacon: beacon data
  * @beacon_interval: beacon interval
  * @dtim_period: DTIM period
@@ -441,8 +522,7 @@ struct cfg80211_beacon_data {
  * @inactivity_timeout: time in seconds to determine station's inactivity.
  */
 struct cfg80211_ap_settings {
-	struct ieee80211_channel *channel;
-	enum nl80211_channel_type channel_type;
+	struct cfg80211_chan_def chandef;
 
 	struct cfg80211_beacon_data beacon;
 
@@ -582,16 +662,24 @@ enum station_info_flags {
  * Used by the driver to indicate the specific rate transmission
  * type for 802.11n transmissions.
  *
- * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled
- * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission
+ * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
+ * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
+ * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 MHz width transmission
+ * @RATE_INFO_FLAGS_80_MHZ_WIDTH: 80 MHz width transmission
+ * @RATE_INFO_FLAGS_80P80_MHZ_WIDTH: 80+80 MHz width transmission
+ * @RATE_INFO_FLAGS_160_MHZ_WIDTH: 160 MHz width transmission
  * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
- * @RATE_INFO_FLAGS_60G: 60gHz MCS
+ * @RATE_INFO_FLAGS_60G: 60GHz MCS
  */
 enum rate_info_flags {
-	RATE_INFO_FLAGS_MCS		= 1<<0,
-	RATE_INFO_FLAGS_40_MHZ_WIDTH	= 1<<1,
-	RATE_INFO_FLAGS_SHORT_GI	= 1<<2,
-	RATE_INFO_FLAGS_60G		= 1<<3,
+	RATE_INFO_FLAGS_MCS			= BIT(0),
+	RATE_INFO_FLAGS_VHT_MCS			= BIT(1),
+	RATE_INFO_FLAGS_40_MHZ_WIDTH		= BIT(2),
+	RATE_INFO_FLAGS_80_MHZ_WIDTH		= BIT(3),
+	RATE_INFO_FLAGS_80P80_MHZ_WIDTH		= BIT(4),
+	RATE_INFO_FLAGS_160_MHZ_WIDTH		= BIT(5),
+	RATE_INFO_FLAGS_SHORT_GI		= BIT(6),
+	RATE_INFO_FLAGS_60G			= BIT(7),
 };
 
 /**
@@ -602,11 +690,13 @@ enum rate_info_flags {
  * @flags: bitflag of flags from &enum rate_info_flags
  * @mcs: mcs index if struct describes a 802.11n bitrate
  * @legacy: bitrate in 100kbit/s for 802.11abg
+ * @nss: number of streams (VHT only)
  */
 struct rate_info {
 	u8 flags;
 	u8 mcs;
 	u16 legacy;
+	u8 nss;
 };
 
 /**
@@ -909,8 +999,7 @@ struct mesh_config {
 
 /**
  * struct mesh_setup - 802.11s mesh setup configuration
- * @channel: the channel to start the mesh network on
- * @channel_type: the channel type to use
+ * @chandef: defines the channel to use
  * @mesh_id: the mesh ID
  * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes
  * @sync_method: which synchronization method to use
@@ -925,8 +1014,7 @@ struct mesh_config {
  * These parameters are fixed when the mesh is created.
  */
 struct mesh_setup {
-	struct ieee80211_channel *channel;
-	enum nl80211_channel_type channel_type;
+	struct cfg80211_chan_def chandef;
 	const u8 *mesh_id;
 	u8 mesh_id_len;
 	u8 sync_method;
@@ -1266,8 +1354,7 @@ struct cfg80211_disassoc_request {
  * @ssid_len: The length of the SSID, will always be non-zero.
  * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not
  *	search for IBSSs with a different BSSID.
- * @channel: The channel to use if no IBSS can be found to join.
- * @channel_type: channel type (HT mode)
+ * @chandef: defines the channel to use if no other IBSS to join can be found
  * @channel_fixed: The channel should be fixed -- do not search for
  *	IBSSs to join on other channels.
  * @ie: information element(s) to include in the beacon
@@ -1285,8 +1372,7 @@ struct cfg80211_disassoc_request {
 struct cfg80211_ibss_params {
 	u8 *ssid;
 	u8 *bssid;
-	struct ieee80211_channel *channel;
-	enum nl80211_channel_type channel_type;
+	struct cfg80211_chan_def chandef;
 	u8 *ie;
 	u8 ssid_len, ie_len;
 	u16 beacon_interval;
@@ -1728,8 +1814,7 @@ struct cfg80211_ops {
 					     struct ieee80211_channel *chan);
 
 	int	(*set_monitor_channel)(struct wiphy *wiphy,
-				       struct ieee80211_channel *chan,
-				       enum nl80211_channel_type channel_type);
+				       struct cfg80211_chan_def *chandef);
 
 	int	(*scan)(struct wiphy *wiphy,
 			struct cfg80211_scan_request *request);
@@ -1791,7 +1876,6 @@ struct cfg80211_ops {
 	int	(*remain_on_channel)(struct wiphy *wiphy,
 				     struct wireless_dev *wdev,
 				     struct ieee80211_channel *chan,
-				     enum nl80211_channel_type channel_type,
 				     unsigned int duration,
 				     u64 *cookie);
 	int	(*cancel_remain_on_channel)(struct wiphy *wiphy,
@@ -1800,10 +1884,8 @@ struct cfg80211_ops {
 
 	int	(*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev,
 			  struct ieee80211_channel *chan, bool offchan,
-			  enum nl80211_channel_type channel_type,
-			  bool channel_type_valid, unsigned int wait,
-			  const u8 *buf, size_t len, bool no_cck,
-			  bool dont_wait_for_ack, u64 *cookie);
+			  unsigned int wait, const u8 *buf, size_t len,
+			  bool no_cck, bool dont_wait_for_ack, u64 *cookie);
 	int	(*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
 				       struct wireless_dev *wdev,
 				       u64 cookie);
@@ -1858,10 +1940,9 @@ struct cfg80211_ops {
 	void	(*get_et_strings)(struct wiphy *wiphy, struct net_device *dev,
 				  u32 sset, u8 *data);
 
-	struct ieee80211_channel *
-		(*get_channel)(struct wiphy *wiphy,
+	int	(*get_channel)(struct wiphy *wiphy,
 			       struct wireless_dev *wdev,
-			       enum nl80211_channel_type *type);
+			       struct cfg80211_chan_def *chandef);
 
 	int	(*start_p2p_device)(struct wiphy *wiphy,
 				    struct wireless_dev *wdev);
@@ -2469,8 +2550,7 @@ struct wireless_dev {
 	spinlock_t event_lock;
 
 	struct cfg80211_internal_bss *current_bss; /* associated / joined */
-	struct ieee80211_channel *preset_chan;
-	enum nl80211_channel_type preset_chantype;
+	struct cfg80211_chan_def preset_chandef;
 
 	/* for AP and mesh channel tracking */
 	struct ieee80211_channel *channel;
@@ -3350,14 +3430,12 @@ void cfg80211_disconnected(struct net_device *dev, u16 reason,
  * @wdev: wireless device
  * @cookie: the request cookie
  * @chan: The current channel (from remain_on_channel request)
- * @channel_type: Channel type
  * @duration: Duration in milliseconds that the driver intents to remain on the
  *	channel
  * @gfp: allocation flags
  */
 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
 			       struct ieee80211_channel *chan,
-			       enum nl80211_channel_type channel_type,
 			       unsigned int duration, gfp_t gfp);
 
 /**
@@ -3365,12 +3443,10 @@ void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
  * @wdev: wireless device
  * @cookie: the request cookie
  * @chan: The current channel (from remain_on_channel request)
- * @channel_type: Channel type
  * @gfp: allocation flags
  */
 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
 					struct ieee80211_channel *chan,
-					enum nl80211_channel_type channel_type,
 					gfp_t gfp);
 
 
@@ -3570,28 +3646,25 @@ void cfg80211_report_obss_beacon(struct wiphy *wiphy,
 				 int freq, int sig_dbm);
 
 /**
- * cfg80211_can_beacon_sec_chan - test if ht40 on extension channel can be used
+ * cfg80211_reg_can_beacon - check if beaconing is allowed
  * @wiphy: the wiphy
- * @chan: main channel
- * @channel_type: HT mode
+ * @chandef: the channel definition
  *
  * This function returns true if there is no secondary channel or the secondary
- * channel can be used for beaconing (i.e. is not a radar channel etc.)
+ * channel(s) can be used for beaconing (i.e. is not a radar channel etc.)
  */
-bool cfg80211_can_beacon_sec_chan(struct wiphy *wiphy,
-				  struct ieee80211_channel *chan,
-				  enum nl80211_channel_type channel_type);
+bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
+			     struct cfg80211_chan_def *chandef);
 
 /*
  * cfg80211_ch_switch_notify - update wdev channel and notify userspace
  * @dev: the device which switched channels
- * @freq: new channel frequency (in MHz)
- * @type: channel type
+ * @chandef: the new channel definition
  *
  * Acquires wdev_lock, so must only be called from sleepable driver context!
  */
-void cfg80211_ch_switch_notify(struct net_device *dev, int freq,
-			       enum nl80211_channel_type type);
+void cfg80211_ch_switch_notify(struct net_device *dev,
+			       struct cfg80211_chan_def *chandef);
 
 /*
  * cfg80211_tdls_oper_request - request userspace to perform TDLS operation
@@ -3652,8 +3725,9 @@ void cfg80211_unregister_wdev(struct wireless_dev *wdev);
  * the data is malformed or the attribute can't be found (respectively),
  * or the length of the found attribute (which can be zero).
  */
-unsigned int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
-				   u8 attr, u8 *buf, unsigned int bufsize);
+int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
+			  enum ieee80211_p2p_attr_id attr,
+			  u8 *buf, unsigned int bufsize);
 
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index e1293c7e4d2..db7680acd0d 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -145,11 +145,11 @@ struct ieee80211_low_level_stats {
 
 /**
  * enum ieee80211_chanctx_change - change flag for channel context
- * @IEEE80211_CHANCTX_CHANGE_CHANNEL_TYPE: The channel type was changed
+ * @IEEE80211_CHANCTX_CHANGE_WIDTH: The channel width changed
  * @IEEE80211_CHANCTX_CHANGE_RX_CHAINS: The number of RX chains changed
  */
 enum ieee80211_chanctx_change {
-	IEEE80211_CHANCTX_CHANGE_CHANNEL_TYPE	= BIT(0),
+	IEEE80211_CHANCTX_CHANGE_WIDTH		= BIT(0),
 	IEEE80211_CHANCTX_CHANGE_RX_CHAINS	= BIT(1),
 };
 
@@ -159,8 +159,7 @@ enum ieee80211_chanctx_change {
  * This is the driver-visible part. The ieee80211_chanctx
  * that contains it is visible in mac80211 only.
  *
- * @channel: the channel to tune to
- * @channel_type: the channel (HT) type
+ * @def: the channel definition
  * @rx_chains_static: The number of RX chains that must always be
  *	active on the channel to receive MIMO transmissions
  * @rx_chains_dynamic: The number of RX chains that must be enabled
@@ -170,8 +169,7 @@ enum ieee80211_chanctx_change {
  *	sizeof(void *), size is determined in hw information.
  */
 struct ieee80211_chanctx_conf {
-	struct ieee80211_channel *channel;
-	enum nl80211_channel_type channel_type;
+	struct cfg80211_chan_def def;
 
 	u8 rx_chains_static, rx_chains_dynamic;
 
@@ -288,9 +286,8 @@ enum ieee80211_rssi_event {
  * @mcast_rate: per-band multicast rate index + 1 (0: disabled)
  * @bssid: The BSSID for this BSS
  * @enable_beacon: whether beaconing should be enabled or not
- * @channel_type: Channel type for this BSS -- the hardware might be
- *	configured for HT40+ while this BSS only uses no-HT, for
- *	example.
+ * @chandef: Channel definition for this BSS -- the hardware might be
+ *	configured a higher bandwidth than this BSS uses, for example.
  * @ht_operation_mode: HT operation mode like in &struct ieee80211_ht_operation.
  *	This field is only valid when the channel type is one of the HT types.
  * @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value
@@ -339,7 +336,7 @@ struct ieee80211_bss_conf {
 	u16 ht_operation_mode;
 	s32 cqm_rssi_thold;
 	u32 cqm_rssi_hyst;
-	enum nl80211_channel_type channel_type;
+	struct cfg80211_chan_def chandef;
 	__be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN];
 	u8 arp_addr_cnt;
 	bool arp_filter_enabled;
@@ -502,9 +499,14 @@ enum mac80211_tx_control_flags {
  *	This is set if the current BSS requires ERP protection.
  * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble.
  * @IEEE80211_TX_RC_MCS: HT rate.
+ * @IEEE80211_TX_RC_VHT_MCS: VHT MCS rate, in this case the idx field is split
+ *	into a higher 4 bits (Nss) and lower 4 bits (MCS number)
  * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in
  *	Greenfield mode.
  * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz.
+ * @IEEE80211_TX_RC_80_MHZ_WIDTH: Indicates 80 MHz transmission
+ * @IEEE80211_TX_RC_160_MHZ_WIDTH: Indicates 160 MHz transmission
+ *	(80+80 isn't supported yet)
  * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the
  *	adjacent 20 MHz channels, if the current channel type is
  *	NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS.
@@ -515,12 +517,15 @@ enum mac80211_rate_control_flags {
 	IEEE80211_TX_RC_USE_CTS_PROTECT		= BIT(1),
 	IEEE80211_TX_RC_USE_SHORT_PREAMBLE	= BIT(2),
 
-	/* rate index is an MCS rate number instead of an index */
+	/* rate index is an HT/VHT MCS instead of an index */
 	IEEE80211_TX_RC_MCS			= BIT(3),
 	IEEE80211_TX_RC_GREEN_FIELD		= BIT(4),
 	IEEE80211_TX_RC_40_MHZ_WIDTH		= BIT(5),
 	IEEE80211_TX_RC_DUP_DATA		= BIT(6),
 	IEEE80211_TX_RC_SHORT_GI		= BIT(7),
+	IEEE80211_TX_RC_VHT_MCS			= BIT(8),
+	IEEE80211_TX_RC_80_MHZ_WIDTH		= BIT(9),
+	IEEE80211_TX_RC_160_MHZ_WIDTH		= BIT(10),
 };
 
 
@@ -563,10 +568,32 @@ enum mac80211_rate_control_flags {
  */
 struct ieee80211_tx_rate {
 	s8 idx;
-	u8 count;
-	u8 flags;
+	u16 count:5,
+	    flags:11;
 } __packed;
 
+#define IEEE80211_MAX_TX_RETRY		31
+
+static inline void ieee80211_rate_set_vht(struct ieee80211_tx_rate *rate,
+					  u8 mcs, u8 nss)
+{
+	WARN_ON(mcs & ~0xF);
+	WARN_ON(nss & ~0x7);
+	rate->idx = (nss << 4) | mcs;
+}
+
+static inline u8
+ieee80211_rate_get_vht_mcs(const struct ieee80211_tx_rate *rate)
+{
+	return rate->idx & 0xF;
+}
+
+static inline u8
+ieee80211_rate_get_vht_nss(const struct ieee80211_tx_rate *rate)
+{
+	return rate->idx >> 4;
+}
+
 /**
  * struct ieee80211_tx_info - skb transmit information
  *
@@ -720,7 +747,11 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info)
  *	(including FCS) was received.
  * @RX_FLAG_SHORTPRE: Short preamble was used for this frame
  * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index
+ * @RX_FLAG_VHT: VHT MCS was used and rate_index is MCS index
  * @RX_FLAG_40MHZ: HT40 (40 MHz) was used
+ * @RX_FLAG_80MHZ: 80 MHz was used
+ * @RX_FLAG_80P80MHZ: 80+80 MHz was used
+ * @RX_FLAG_160MHZ: 160 MHz was used
  * @RX_FLAG_SHORT_GI: Short guard interval was used
  * @RX_FLAG_NO_SIGNAL_VAL: The signal strength value is not present.
  *	Valid only for data frames (mainly A-MPDU)
@@ -763,6 +794,10 @@ enum mac80211_rx_flags {
 	RX_FLAG_AMPDU_DELIM_CRC_ERROR	= BIT(19),
 	RX_FLAG_AMPDU_DELIM_CRC_KNOWN	= BIT(20),
 	RX_FLAG_MACTIME_END		= BIT(21),
+	RX_FLAG_VHT			= BIT(22),
+	RX_FLAG_80MHZ			= BIT(23),
+	RX_FLAG_80P80MHZ		= BIT(24),
+	RX_FLAG_160MHZ			= BIT(25),
 };
 
 /**
@@ -783,7 +818,8 @@ enum mac80211_rx_flags {
  *	@IEEE80211_HW_SIGNAL_*
  * @antenna: antenna used
  * @rate_idx: index of data rate into band's supported rates or MCS index if
- *	HT rates are use (RX_FLAG_HT)
+ *	HT or VHT is used (%RX_FLAG_HT/%RX_FLAG_VHT)
+ * @vht_nss: number of streams (VHT only)
  * @flag: %RX_FLAG_*
  * @rx_flags: internal RX flags for mac80211
  * @ampdu_reference: A-MPDU reference number, must be a different value for
@@ -806,6 +842,7 @@ struct ieee80211_rx_status {
 	u16 vendor_radiotap_len;
 	u16 freq;
 	u8 rate_idx;
+	u8 vht_nss;
 	u8 rx_flags;
 	u8 band;
 	u8 antenna;
@@ -2550,7 +2587,6 @@ struct ieee80211_ops {
 	int (*remain_on_channel)(struct ieee80211_hw *hw,
 				 struct ieee80211_vif *vif,
 				 struct ieee80211_channel *chan,
-				 enum nl80211_channel_type channel_type,
 				 int duration);
 	int (*cancel_remain_on_channel)(struct ieee80211_hw *hw);
 	int (*set_ringparam)(struct ieee80211_hw *hw, u32 tx, u32 rx);