Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

2 files changed, 155 insertions, 13 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index e9abc7b536cd..80a10212b1b9 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -747,6 +747,8 @@ enum station_parameters_apply_mask {
  * @supported_channels_len: number of supported channels
  * @supported_oper_classes: supported oper classes in IEEE 802.11 format
  * @supported_oper_classes_len: number of supported operating classes
+ * @opmode_notif: operating mode field from Operating Mode Notification
+ * @opmode_notif_used: information if operating mode field is used
  */
 struct station_parameters {
 	const u8 *supported_rates;
@@ -770,6 +772,8 @@ struct station_parameters {
 	u8 supported_channels_len;
 	const u8 *supported_oper_classes;
 	u8 supported_oper_classes_len;
+	u8 opmode_notif;
+	bool opmode_notif_used;
 };
 
 /**
@@ -1762,7 +1766,8 @@ enum wiphy_params_flags {
 struct cfg80211_bitrate_mask {
 	struct {
 		u32 legacy;
-		u8 mcs[IEEE80211_HT_MCS_MASK_LEN];
+		u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
+		u16 vht_mcs[NL80211_VHT_NSS_MAX];
 	} control[IEEE80211_NUM_BANDS];
 };
 /**
@@ -2676,6 +2681,34 @@ struct wiphy_coalesce_support {
 };
 
 /**
+ * enum wiphy_vendor_command_flags - validation flags for vendor commands
+ * @WIPHY_VENDOR_CMD_NEED_WDEV: vendor command requires wdev
+ * @WIPHY_VENDOR_CMD_NEED_NETDEV: vendor command requires netdev
+ * @WIPHY_VENDOR_CMD_NEED_RUNNING: interface/wdev must be up & running
+ *	(must be combined with %_WDEV or %_NETDEV)
+ */
+enum wiphy_vendor_command_flags {
+	WIPHY_VENDOR_CMD_NEED_WDEV = BIT(0),
+	WIPHY_VENDOR_CMD_NEED_NETDEV = BIT(1),
+	WIPHY_VENDOR_CMD_NEED_RUNNING = BIT(2),
+};
+
+/**
+ * struct wiphy_vendor_command - vendor command definition
+ * @info: vendor command identifying information, as used in nl80211
+ * @flags: flags, see &enum wiphy_vendor_command_flags
+ * @doit: callback for the operation, note that wdev is %NULL if the
+ *	flags didn't ask for a wdev and non-%NULL otherwise; the data
+ *	pointer may be %NULL if userspace provided no data at all
+ */
+struct wiphy_vendor_command {
+	struct nl80211_vendor_cmd_info info;
+	u32 flags;
+	int (*doit)(struct wiphy *wiphy, struct wireless_dev *wdev,
+		    const void *data, int data_len);
+};
+
+/**
  * struct wiphy - wireless hardware description
  * @reg_notifier: the driver's regulatory notification callback,
  *	note that if your driver uses wiphy_apply_custom_regulatory()
@@ -2788,6 +2821,9 @@ struct wiphy_coalesce_support {
  * @extended_capabilities_mask: mask of the valid values
  * @extended_capabilities_len: length of the extended capabilities
  * @coalesce: packet coalescing support information
+ *
+ * @vendor_commands: array of vendor commands supported by the hardware
+ * @n_vendor_commands: number of vendor commands
  */
 struct wiphy {
 	/* assign these fields before you register the wiphy */
@@ -2899,6 +2935,9 @@ struct wiphy {
 
 	const struct wiphy_coalesce_support *coalesce;
 
+	const struct wiphy_vendor_command *vendor_commands;
+	int n_vendor_commands;
+
 	char priv[0] __aligned(NETDEV_ALIGN);
 };
 
@@ -3843,6 +3882,75 @@ void wiphy_rfkill_start_polling(struct wiphy *wiphy);
  */
 void wiphy_rfkill_stop_polling(struct wiphy *wiphy);
 
+/**
+ * DOC: Vendor commands
+ *
+ * Occasionally, there are special protocol or firmware features that
+ * can't be implemented very openly. For this and similar cases, the
+ * vendor command functionality allows implementing the features with
+ * (typically closed-source) userspace and firmware, using nl80211 as
+ * the configuration mechanism.
+ *
+ * A driver supporting vendor commands must register them as an array
+ * in struct wiphy, with handlers for each one, each command has an
+ * OUI and sub command ID to identify it.
+ *
+ * Note that this feature should not be (ab)used to implement protocol
+ * features that could openly be shared across drivers. In particular,
+ * it must never be required to use vendor commands to implement any
+ * "normal" functionality that higher-level userspace like connection
+ * managers etc. need.
+ */
+
+struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
+					   enum nl80211_commands cmd,
+					   enum nl80211_attrs attr,
+					   int approxlen);
+
+/**
+ * cfg80211_vendor_cmd_alloc_reply_skb - allocate vendor command reply
+ * @wiphy: the wiphy
+ * @approxlen: an upper bound of the length of the data that will
+ *	be put into the skb
+ *
+ * This function allocates and pre-fills an skb for a reply to
+ * a vendor command. Since it is intended for a reply, calling
+ * it outside of a vendor command's doit() operation is invalid.
+ *
+ * The returned skb is pre-filled with some identifying data in
+ * a way that any data that is put into the skb (with skb_put(),
+ * nla_put() or similar) will end up being within the
+ * %NL80211_ATTR_VENDOR_DATA attribute, so all that needs to be done
+ * with the skb is adding data for the corresponding userspace tool
+ * which can then read that data out of the vendor data attribute.
+ * You must not modify the skb in any other way.
+ *
+ * When done, call cfg80211_vendor_cmd_reply() with the skb and return
+ * its error code as the result of the doit() operation.
+ *
+ * Return: An allocated and pre-filled skb. %NULL if any errors happen.
+ */
+static inline struct sk_buff *
+cfg80211_vendor_cmd_alloc_reply_skb(struct wiphy *wiphy, int approxlen)
+{
+	return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_VENDOR,
+					  NL80211_ATTR_VENDOR_DATA, approxlen);
+}
+
+/**
+ * cfg80211_vendor_cmd_reply - send the reply skb
+ * @skb: The skb, must have been allocated with
+ *	cfg80211_vendor_cmd_alloc_reply_skb()
+ *
+ * Since calling this function will usually be the last thing
+ * before returning from the vendor command doit() you should
+ * return the error code.  Note that this function consumes the
+ * skb regardless of the return value.
+ *
+ * Return: An error code or 0 on success.
+ */
+int cfg80211_vendor_cmd_reply(struct sk_buff *skb);
+
 #ifdef CONFIG_NL80211_TESTMODE
 /**
  * DOC: Test mode
@@ -3878,8 +3986,12 @@ void wiphy_rfkill_stop_polling(struct wiphy *wiphy);
  *
  * Return: An allocated and pre-filled skb. %NULL if any errors happen.
  */
-struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
-						  int approxlen);
+static inline struct sk_buff *
+cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, int approxlen)
+{
+	return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_TESTMODE,
+					  NL80211_ATTR_TESTDATA, approxlen);
+}
 
 /**
  * cfg80211_testmode_reply - send the reply skb
@@ -3893,7 +4005,10 @@ struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
  *
  * Return: An error code or 0 on success.
  */
-int cfg80211_testmode_reply(struct sk_buff *skb);
+static inline int cfg80211_testmode_reply(struct sk_buff *skb)
+{
+	return cfg80211_vendor_cmd_reply(skb);
+}
 
 /**
  * cfg80211_testmode_alloc_event_skb - allocate testmode event
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 3cd408b326de..531785f5819e 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1163,6 +1163,19 @@ static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif)
 }
 
 /**
+ * wdev_to_ieee80211_vif - return a vif struct from a wdev
+ * @wdev: the wdev to get the vif for
+ *
+ * This can be used by mac80211 drivers with direct cfg80211 APIs
+ * (like the vendor commands) that get a wdev.
+ *
+ * Note that this function may return %NULL if the given wdev isn't
+ * associated with a vif that the driver knows about (e.g. monitor
+ * or AP_VLAN interfaces.)
+ */
+struct ieee80211_vif *wdev_to_ieee80211_vif(struct wireless_dev *wdev);
+
+/**
  * enum ieee80211_key_flags - key flags
  *
  * These flags are used for communication about keys between the driver
@@ -1600,6 +1613,9 @@ enum ieee80211_hw_flags {
  * @extra_tx_headroom: headroom to reserve in each transmit skb
  *	for use by the driver (e.g. for transmit headers.)
  *
+ * @extra_beacon_tailroom: tailroom to reserve in each beacon tx skb.
+ *	Can be used by drivers to add extra IEs.
+ *
  * @channel_change_time: time (in microseconds) it takes to change channels.
  *
  * @max_signal: Maximum value for signal (rssi) in RX information, used
@@ -1682,6 +1698,7 @@ struct ieee80211_hw {
 	void *priv;
 	u32 flags;
 	unsigned int extra_tx_headroom;
+	unsigned int extra_beacon_tailroom;
 	int channel_change_time;
 	int vif_data_size;
 	int sta_data_size;
@@ -2398,9 +2415,6 @@ enum ieee80211_roc_type {
  *	See the section "Frame filtering" for more information.
  *	This callback must be implemented and can sleep.
  *
- * @set_multicast_list: Configure the device's interface specific RX multicast
- *	filter. This callback is optional. This callback must be atomic.
- *
  * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit
  * 	must be set or cleared for a given STA. Must be atomic.
  *
@@ -2485,7 +2499,11 @@ enum ieee80211_roc_type {
  *	AP, IBSS/WDS/mesh peer etc. This callback can sleep.
  *
  * @sta_remove: Notifies low level driver about removal of an associated
- *	station, AP, IBSS/WDS/mesh peer etc. This callback can sleep.
+ *	station, AP, IBSS/WDS/mesh peer etc. Note that after the callback
+ *	returns it isn't safe to use the pointer, not even RCU protected;
+ *	no RCU grace period is guaranteed between returning here and freeing
+ *	the station. See @sta_pre_rcu_remove if needed.
+ *	This callback can sleep.
  *
  * @sta_add_debugfs: Drivers can use this callback to add debugfs files
  *	when a station is added to mac80211's station list. This callback
@@ -2504,7 +2522,17 @@ enum ieee80211_roc_type {
  *	station (which can be the AP, a client, IBSS/WDS/mesh peer etc.)
  *	This callback is mutually exclusive with @sta_add/@sta_remove.
  *	It must not fail for down transitions but may fail for transitions
- *	up the list of states.
+ *	up the list of states. Also note that after the callback returns it
+ *	isn't safe to use the pointer, not even RCU protected - no RCU grace
+ *	period is guaranteed between returning here and freeing the station.
+ *	See @sta_pre_rcu_remove if needed.
+ *	The callback can sleep.
+ *
+ * @sta_pre_rcu_remove: Notify driver about station removal before RCU
+ *	synchronisation. This is useful if a driver needs to have station
+ *	pointers protected using RCU, it can then use this call to clear
+ *	the pointers instead of waiting for an RCU grace period to elapse
+ *	in @sta_state.
  *	The callback can sleep.
  *
  * @sta_rc_update: Notifies the driver of changes to the bitrates that can be
@@ -2764,10 +2792,6 @@ struct ieee80211_ops {
 				 unsigned int changed_flags,
 				 unsigned int *total_flags,
 				 u64 multicast);
-	void (*set_multicast_list)(struct ieee80211_hw *hw,
-				   struct ieee80211_vif *vif, bool allmulti,
-				   struct netdev_hw_addr_list *mc_list);
-
 	int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
 		       bool set);
 	int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd,
@@ -2821,6 +2845,9 @@ struct ieee80211_ops {
 			 struct ieee80211_sta *sta,
 			 enum ieee80211_sta_state old_state,
 			 enum ieee80211_sta_state new_state);
+	void (*sta_pre_rcu_remove)(struct ieee80211_hw *hw,
+				   struct ieee80211_vif *vif,
+				   struct ieee80211_sta *sta);
 	void (*sta_rc_update)(struct ieee80211_hw *hw,
 			      struct ieee80211_vif *vif,
 			      struct ieee80211_sta *sta,