1 files changed, 89 insertions, 56 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index de22cbfef23..b0787a1dea9 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -146,6 +146,9 @@ struct ieee80211_low_level_stats {
  *      enabled/disabled (beaconing modes)
  * @BSS_CHANGED_CQM: Connection quality monitor config changed
  * @BSS_CHANGED_IBSS: IBSS join status changed
+ * @BSS_CHANGED_ARP_FILTER: Hardware ARP filter address list or state changed.
+ * @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note
+ *      that it is only ever disabled for station mode.
  */
 enum ieee80211_bss_change {
         BSS_CHANGED_ASSOC               = 1<<0,
@@ -160,10 +163,19 @@ enum ieee80211_bss_change {
         BSS_CHANGED_BEACON_ENABLED      = 1<<9,
         BSS_CHANGED_CQM                 = 1<<10,
         BSS_CHANGED_IBSS                = 1<<11,
+        BSS_CHANGED_ARP_FILTER          = 1<<12,
+        BSS_CHANGED_QOS                 = 1<<13,
 
         /* when adding here, make sure to change ieee80211_reconfig */
 };
 
+/*
+ * The maximum number of IPv4 addresses listed for ARP filtering. If the number
+ * of addresses for an interface increase beyond this value, hardware ARP
+ * filtering will be disabled.
+ */
+#define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4
+
 /**
  * struct ieee80211_bss_conf - holds the BSS's changing parameters
  *
@@ -182,7 +194,9 @@ enum ieee80211_bss_change {
  *      if the hardware cannot handle this it must set the
  *      IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag
  * @dtim_period: num of beacons before the next DTIM, for beaconing,
- *      not valid in station mode (cf. hw conf ps_dtim_period)
+ *      valid in station mode only while @assoc is true and if also
+ *      requested by %IEEE80211_HW_NEED_DTIM_PERIOD (cf. also hw conf
+ *      @ps_dtim_period)
  * @timestamp: beacon timestamp
  * @beacon_int: beacon interval
  * @assoc_capability: capabilities taken from assoc resp
@@ -199,6 +213,16 @@ enum ieee80211_bss_change {
  * @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value
  *      implies disabled
  * @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis
+ * @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The
+ *      may filter ARP queries targeted for other addresses than listed here.
+ *      The driver must allow ARP queries targeted for all address listed here
+ *      to pass through. An empty list implies no ARP queries need to pass.
+ * @arp_addr_cnt: Number of addresses currently on the list.
+ * @arp_filter_enabled: Enable ARP filtering - if enabled, the hardware may
+ *      filter ARP queries based on the @arp_addr_list, if disabled, the
+ *      hardware must not perform any ARP filtering. Note, that the filter will
+ *      be enabled also in promiscuous mode.
+ * @qos: This is a QoS-enabled BSS.
  */
 struct ieee80211_bss_conf {
         const u8 *bssid;
@@ -219,6 +243,10 @@ struct ieee80211_bss_conf {
         s32 cqm_rssi_thold;
         u32 cqm_rssi_hyst;
         enum nl80211_channel_type channel_type;
+        __be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN];
+        u8 arp_addr_cnt;
+        bool arp_filter_enabled;
+        bool qos;
 };
 
 /**
@@ -312,9 +340,10 @@ enum mac80211_tx_control_flags {
         IEEE80211_TX_INTFL_NL80211_FRAME_TX     = BIT(21),
         IEEE80211_TX_CTL_LDPC                   = BIT(22),
         IEEE80211_TX_CTL_STBC                   = BIT(23) | BIT(24),
-#define IEEE80211_TX_CTL_STBC_SHIFT             23
 };
 
+#define IEEE80211_TX_CTL_STBC_SHIFT             23
+
 /**
  * enum mac80211_rate_control_flags - per-rate flags set by the
  *      Rate Control algorithm.
@@ -390,7 +419,7 @@ struct ieee80211_tx_rate {
         s8 idx;
         u8 count;
         u8 flags;
-} __attribute__((packed));
+} __packed;
 
 /**
  * struct ieee80211_tx_info - skb transmit information
@@ -412,8 +441,6 @@ struct ieee80211_tx_rate {
  * @driver_data: array of driver_data pointers
  * @ampdu_ack_len: number of acked aggregated frames.
  *      relevant only if IEEE80211_TX_STAT_AMPDU was set.
- * @ampdu_ack_map: block ack bit map for the aggregation.
- *      relevant only if IEEE80211_TX_STAT_AMPDU was set.
  * @ampdu_len: number of aggregated frames.
  *      relevant only if IEEE80211_TX_STAT_AMPDU was set.
  * @ack_signal: signal strength of the ACK frame
@@ -448,10 +475,9 @@ struct ieee80211_tx_info {
                 struct {
                         struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES];
                         u8 ampdu_ack_len;
-                        u64 ampdu_ack_map;
                         int ack_signal;
                         u8 ampdu_len;
-                        /* 7 bytes free */
+                        /* 15 bytes free */
                 } status;
                 struct {
                         struct ieee80211_tx_rate driver_rates[
@@ -601,15 +627,14 @@ struct ieee80211_rx_status {
  *      may turn the device off as much as possible. Typically, this flag will
  *      be set when an interface is set UP but not associated or scanning, but
  *      it can also be unset in that case when monitor interfaces are active.
- * @IEEE80211_CONF_QOS: Enable 802.11e QoS also know as WMM (Wireless
- *      Multimedia). On some drivers (iwlwifi is one of know) we have
- *      to enable/disable QoS explicitly.
+ * @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main
+ *      operating channel.
  */
 enum ieee80211_conf_flags {
         IEEE80211_CONF_MONITOR          = (1<<0),
         IEEE80211_CONF_PS               = (1<<1),
         IEEE80211_CONF_IDLE             = (1<<2),
-        IEEE80211_CONF_QOS              = (1<<3),
+        IEEE80211_CONF_OFFCHANNEL       = (1<<3),
 };
 
 
@@ -624,7 +649,6 @@ enum ieee80211_conf_flags {
  * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed
  * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed
  * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed
- * @IEEE80211_CONF_CHANGE_QOS: Quality of service was enabled or disabled
  */
 enum ieee80211_conf_changed {
         IEEE80211_CONF_CHANGE_SMPS              = BIT(1),
@@ -635,7 +659,6 @@ enum ieee80211_conf_changed {
         IEEE80211_CONF_CHANGE_CHANNEL           = BIT(6),
         IEEE80211_CONF_CHANGE_RETRY_LIMITS      = BIT(7),
         IEEE80211_CONF_CHANGE_IDLE              = BIT(8),
-        IEEE80211_CONF_CHANGE_QOS               = BIT(9),
 };
 
 /**
@@ -676,9 +699,6 @@ enum ieee80211_smps_mode {
  * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the
  *      powersave documentation below. This variable is valid only when
  *      the CONF_PS flag is set.
- * @dynamic_ps_forced_timeout: The dynamic powersave timeout (in ms) configured
- *      by cfg80211 (essentially, wext) If set, this value overrules the value
- *      chosen by mac80211 based on ps qos network latency.
  *
  * @power_level: requested transmit power (in dBm)
  *
@@ -698,7 +718,7 @@ enum ieee80211_smps_mode {
  */
 struct ieee80211_conf {
         u32 flags;
-        int power_level, dynamic_ps_timeout, dynamic_ps_forced_timeout;
+        int power_level, dynamic_ps_timeout;
         int max_sleep_period;
 
         u16 listen_interval;
@@ -815,7 +835,6 @@ enum ieee80211_key_flags {
  *      encrypted in hardware.
  * @alg: The key algorithm.
  * @flags: key flags, see &enum ieee80211_key_flags.
- * @ap_addr: AP's MAC address
  * @keyidx: the key index (0-3)
  * @keylen: key material length
  * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte)
@@ -881,16 +900,12 @@ struct ieee80211_sta {
  * enum sta_notify_cmd - sta notify command
  *
  * Used with the sta_notify() callback in &struct ieee80211_ops, this
- * indicates addition and removal of a station to station table,
- * or if a associated station made a power state transition.
+ * indicates if an associated station made a power state transition.
  *
- * @STA_NOTIFY_ADD: (DEPRECATED) a station was added to the station table
- * @STA_NOTIFY_REMOVE: (DEPRECATED) a station being removed from the station table
  * @STA_NOTIFY_SLEEP: a station is now sleeping
  * @STA_NOTIFY_AWAKE: a sleeping station woke up
  */
 enum sta_notify_cmd {
-        STA_NOTIFY_ADD, STA_NOTIFY_REMOVE,
         STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE,
 };
 
@@ -1014,6 +1029,9 @@ enum ieee80211_tkip_key_type {
  *      connection quality related parameters, such as the RSSI level and
  *      provide notifications if configured trigger levels are reached.
  *
+ * @IEEE80211_HW_NEED_DTIM_PERIOD:
+ *      This device needs to know the DTIM period for the BSS before
+ *      associating.
  */
 enum ieee80211_hw_flags {
         IEEE80211_HW_HAS_RATE_CONTROL                   = 1<<0,
@@ -1023,7 +1041,7 @@ enum ieee80211_hw_flags {
         IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE      = 1<<4,
         IEEE80211_HW_SIGNAL_UNSPEC                      = 1<<5,
         IEEE80211_HW_SIGNAL_DBM                         = 1<<6,
-        /* use this hole */
+        IEEE80211_HW_NEED_DTIM_PERIOD                   = 1<<7,
         IEEE80211_HW_SPECTRUM_MGMT                      = 1<<8,
         IEEE80211_HW_AMPDU_AGGREGATION                  = 1<<9,
         IEEE80211_HW_SUPPORTS_PS                        = 1<<10,
@@ -1260,6 +1278,15 @@ ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw,
  * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS
  * enabled whenever user has enabled powersave.
  *
+ * Some hardware need to toggle a single shared antenna between WLAN and
+ * Bluetooth to facilitate co-existence. These types of hardware set
+ * limitations on the use of host controlled dynamic powersave whenever there
+ * is simultaneous WLAN and Bluetooth traffic. For these types of hardware, the
+ * driver may request temporarily going into full power save, in order to
+ * enable toggling the antenna between BT and WLAN. If the driver requests
+ * disabling dynamic powersave, the @dynamic_ps_timeout value will be
+ * temporarily set to zero until the driver re-enables dynamic powersave.
+ *
  * Driver informs U-APSD client support by enabling
  * %IEEE80211_HW_SUPPORTS_UAPSD flag. The mode is configured through the
  * uapsd paramater in conf_tx() operation. Hardware needs to send the QoS
@@ -1451,7 +1478,7 @@ enum ieee80211_filter_flags {
  *
  * Note that drivers MUST be able to deal with a TX aggregation
  * session being stopped even before they OK'ed starting it by
- * calling ieee80211_start_tx_ba_cb(_irqsafe), because the peer
+ * calling ieee80211_start_tx_ba_cb_irqsafe, because the peer
  * might receive the addBA frame and send a delBA right away!
  *
  * @IEEE80211_AMPDU_RX_START: start Rx aggregation
@@ -1636,7 +1663,7 @@ enum ieee80211_ampdu_mlme_action {
  *      is the first frame we expect to perform the action on. Notice
  *      that TX/RX_STOP can pass NULL for this parameter.
  *      Returns a negative error code on failure.
- *      The callback must be atomic.
+ *      The callback can sleep.
  *
  * @get_survey: Return per-channel survey information
  *
@@ -2307,25 +2334,14 @@ void ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
 int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid);
 
 /**
- * ieee80211_start_tx_ba_cb - low level driver ready to aggregate.
- * @vif: &struct ieee80211_vif pointer from the add_interface callback
- * @ra: receiver address of the BA session recipient.
- * @tid: the TID to BA on.
- *
- * This function must be called by low level driver once it has
- * finished with preparations for the BA session.
- */
-void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
-
-/**
  * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate.
  * @vif: &struct ieee80211_vif pointer from the add_interface callback
  * @ra: receiver address of the BA session recipient.
  * @tid: the TID to BA on.
  *
  * This function must be called by low level driver once it has
- * finished with preparations for the BA session.
- * This version of the function is IRQ-safe.
+ * finished with preparations for the BA session. It can be called
+ * from any context.
  */
 void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra,
                                       u16 tid);
@@ -2334,27 +2350,14 @@ void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra,
  * ieee80211_stop_tx_ba_session - Stop a Block Ack session.
  * @sta: the station whose BA session to stop
  * @tid: the TID to stop BA.
- * @initiator: if indicates initiator DELBA frame will be sent.
  *
- * Return: error if no sta with matching da found, success otherwise
+ * Return: negative error if the TID is invalid, or no aggregation active
  *
  * Although mac80211/low level driver/user space application can estimate
  * the need to stop aggregation on a certain RA/TID, the session level
  * will be managed by the mac80211.
  */
-int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid,
-                                 enum ieee80211_back_parties initiator);
-
-/**
- * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate.
- * @vif: &struct ieee80211_vif pointer from the add_interface callback
- * @ra: receiver address of the BA session recipient.
- * @tid: the desired TID to BA on.
- *
- * This function must be called by low level driver once it has
- * finished with preparations for the BA session tear down.
- */
-void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
+int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid);
 
 /**
  * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate.
@@ -2363,8 +2366,8 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
  * @tid: the desired TID to BA on.
  *
  * This function must be called by low level driver once it has
- * finished with preparations for the BA session tear down.
- * This version of the function is IRQ-safe.
+ * finished with preparations for the BA session tear down. It
+ * can be called from any context.
  */
 void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra,
                                      u16 tid);
@@ -2460,6 +2463,36 @@ void ieee80211_beacon_loss(struct ieee80211_vif *vif);
 void ieee80211_connection_loss(struct ieee80211_vif *vif);
 
 /**
+ * ieee80211_disable_dyn_ps - force mac80211 to temporarily disable dynamic psm
+ *
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ *
+ * Some hardware require full power save to manage simultaneous BT traffic
+ * on the WLAN frequency. Full PSM is required periodically, whenever there are
+ * burst of BT traffic. The hardware gets information of BT traffic via
+ * hardware co-existence lines, and consequentially requests mac80211 to
+ * (temporarily) enter full psm.
+ * This function will only temporarily disable dynamic PS, not enable PSM if
+ * it was not already enabled.
+ * The driver must make sure to re-enable dynamic PS using
+ * ieee80211_enable_dyn_ps() if the driver has disabled it.
+ *
+ */
+void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif);
+
+/**
+ * ieee80211_enable_dyn_ps - restore dynamic psm after being disabled
+ *
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ *
+ * This function restores dynamic PS after being temporarily disabled via
+ * ieee80211_disable_dyn_ps(). Each ieee80211_disable_dyn_ps() call must
+ * be coupled with an eventual call to this function.
+ *
+ */
+void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif);
+
+/**
  * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring
  *      rssi threshold triggered
  *