1 files changed, 127 insertions, 11 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 7ceed99a05bc..f4ab2fb4d50c 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -154,12 +154,14 @@ struct ieee80211_low_level_stats {
  * @IEEE80211_CHANCTX_CHANGE_RADAR: radar detection flag changed
  * @IEEE80211_CHANCTX_CHANGE_CHANNEL: switched to another operating channel,
  *      this is used only with channel switching with CSA
+ * @IEEE80211_CHANCTX_CHANGE_MIN_WIDTH: The min required channel width changed
  */
 enum ieee80211_chanctx_change {
         IEEE80211_CHANCTX_CHANGE_WIDTH          = BIT(0),
         IEEE80211_CHANCTX_CHANGE_RX_CHAINS      = BIT(1),
         IEEE80211_CHANCTX_CHANGE_RADAR          = BIT(2),
         IEEE80211_CHANCTX_CHANGE_CHANNEL        = BIT(3),
+        IEEE80211_CHANCTX_CHANGE_MIN_WIDTH      = BIT(4),
 };
 
 /**
@@ -169,6 +171,7 @@ enum ieee80211_chanctx_change {
  * that contains it is visible in mac80211 only.
  *
  * @def: the channel definition
+ * @min_def: the minimum channel definition currently required.
  * @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
@@ -180,6 +183,7 @@ enum ieee80211_chanctx_change {
  */
 struct ieee80211_chanctx_conf {
         struct cfg80211_chan_def def;
+        struct cfg80211_chan_def min_def;
 
         u8 rx_chains_static, rx_chains_dynamic;
 
@@ -1159,6 +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
@@ -1229,6 +1246,36 @@ struct ieee80211_key_conf {
 };
 
 /**
+ * struct ieee80211_cipher_scheme - cipher scheme
+ *
+ * This structure contains a cipher scheme information defining
+ * the secure packet crypto handling.
+ *
+ * @cipher: a cipher suite selector
+ * @iftype: a cipher iftype bit mask indicating an allowed cipher usage
+ * @hdr_len: a length of a security header used the cipher
+ * @pn_len: a length of a packet number in the security header
+ * @pn_off: an offset of pn from the beginning of the security header
+ * @key_idx_off: an offset of key index byte in the security header
+ * @key_idx_mask: a bit mask of key_idx bits
+ * @key_idx_shift: a bit shift needed to get key_idx
+ *     key_idx value calculation:
+ *      (sec_header_base[key_idx_off] & key_idx_mask) >> key_idx_shift
+ * @mic_len: a mic length in bytes
+ */
+struct ieee80211_cipher_scheme {
+        u32 cipher;
+        u16 iftype;
+        u8 hdr_len;
+        u8 pn_len;
+        u8 pn_off;
+        u8 key_idx_off;
+        u8 key_idx_mask;
+        u8 key_idx_shift;
+        u8 mic_len;
+};
+
+/**
  * enum set_key_cmd - key command
  *
  * Used with the set_key() callback in &struct ieee80211_ops, this
@@ -1566,7 +1613,8 @@ enum ieee80211_hw_flags {
  * @extra_tx_headroom: headroom to reserve in each transmit skb
  *      for use by the driver (e.g. for transmit headers.)
  *
- * @channel_change_time: time (in microseconds) it takes to change channels.
+ * @extra_beacon_tailroom: tailroom to reserve in each beacon tx skb.
+ *      Can be used by drivers to add extra IEs.
  *
  * @max_signal: Maximum value for signal (rssi) in RX information, used
  *      only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB
@@ -1636,6 +1684,10 @@ enum ieee80211_hw_flags {
  * @uapsd_max_sp_len: maximum number of total buffered frames the WMM AP may
  *      deliver to a WMM STA during any Service Period triggered by the WMM STA.
  *      Use IEEE80211_WMM_IE_STA_QOSINFO_SP_* for correct values.
+ *
+ * @n_cipher_schemes: a size of an array of cipher schemes definitions.
+ * @cipher_schemes: a pointer to an array of cipher scheme definitions
+ *      supported by HW.
  */
 struct ieee80211_hw {
         struct ieee80211_conf conf;
@@ -1644,7 +1696,7 @@ struct ieee80211_hw {
         void *priv;
         u32 flags;
         unsigned int extra_tx_headroom;
-        int channel_change_time;
+        unsigned int extra_beacon_tailroom;
         int vif_data_size;
         int sta_data_size;
         int chanctx_data_size;
@@ -1663,6 +1715,8 @@ struct ieee80211_hw {
         netdev_features_t netdev_features;
         u8 uapsd_queues;
         u8 uapsd_max_sp_len;
+        u8 n_cipher_schemes;
+        const struct ieee80211_cipher_scheme *cipher_schemes;
 };
 
 /**
@@ -2065,6 +2119,11 @@ void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb);
  * appropriately (only the last frame may have %IEEE80211_TX_STATUS_EOSP)
  * and also take care of the EOSP and MORE_DATA bits in the frame.
  * The driver may also use ieee80211_sta_eosp() in this case.
+ *
+ * Note that if the driver ever buffers frames other than QoS-data
+ * frames, it must take care to never send a non-QoS-data frame as
+ * the last frame in a service period, adding a QoS-nulldata frame
+ * after a non-QoS-data frame if needed.
  */
 
 /**
@@ -2358,9 +2417,6 @@ 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.
  *
@@ -2445,7 +2501,11 @@ 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
@@ -2464,7 +2524,17 @@ 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
@@ -2724,10 +2794,6 @@ 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,
@@ -2781,6 +2847,9 @@ 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,
@@ -4585,4 +4654,51 @@ bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw,
                               struct ieee80211_vif *vif, struct sk_buff *skb,
                               int band, struct ieee80211_sta **sta);
 
+/**
+ * struct ieee80211_noa_data - holds temporary data for tracking P2P NoA state
+ *
+ * @next_tsf: TSF timestamp of the next absent state change
+ * @has_next_tsf: next absent state change event pending
+ *
+ * @absent: descriptor bitmask, set if GO is currently absent
+ *
+ * private:
+ *
+ * @count: count fields from the NoA descriptors
+ * @desc: adjusted data from the NoA
+ */
+struct ieee80211_noa_data {
+        u32 next_tsf;
+        bool has_next_tsf;
+
+        u8 absent;
+
+        u8 count[IEEE80211_P2P_NOA_DESC_MAX];
+        struct {
+                u32 start;
+                u32 duration;
+                u32 interval;
+        } desc[IEEE80211_P2P_NOA_DESC_MAX];
+};
+
+/**
+ * ieee80211_parse_p2p_noa - initialize NoA tracking data from P2P IE
+ *
+ * @attr: P2P NoA IE
+ * @data: NoA tracking data
+ * @tsf: current TSF timestamp
+ *
+ * Return: number of successfully parsed descriptors
+ */
+int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr,
+                            struct ieee80211_noa_data *data, u32 tsf);
+
+/**
+ * ieee80211_update_p2p_noa - get next pending P2P GO absent state change
+ *
+ * @data: NoA tracking data
+ * @tsf: current TSF timestamp
+ */
+void ieee80211_update_p2p_noa(struct ieee80211_noa_data *data, u32 tsf);
+
 #endif /* MAC80211_H */