1 files changed, 156 insertions, 27 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 9210bdc7bd8d..1937c7d98304 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -95,9 +95,11 @@ struct device;
  * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues.
  */
 enum ieee80211_max_queues {
-        IEEE80211_MAX_QUEUES =          4,
+        IEEE80211_MAX_QUEUES =          16,
 };
 
+#define IEEE80211_INVAL_HW_QUEUE        0xff
+
 /**
  * enum ieee80211_ac_numbers - AC numbers as used in mac80211
  * @IEEE80211_AC_VO: voice
@@ -244,7 +246,7 @@ enum ieee80211_rssi_event {
  * @channel_type: Channel type for this BSS -- the hardware might be
  *      configured for HT40+ while this BSS only uses no-HT, for
  *      example.
- * @ht_operation_mode: HT operation mode (like in &struct ieee80211_ht_info).
+ * @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
  *      implies disabled
@@ -522,7 +524,7 @@ struct ieee80211_tx_rate {
  *
  * @flags: transmit info flags, defined above
  * @band: the band to transmit on (use for checking for races)
- * @antenna_sel_tx: antenna to use, 0 for automatic diversity
+ * @hw_queue: HW queue to put the frame on, skb_get_queue_mapping() gives the AC
  * @ack_frame_id: internal frame ID for TX status, used internally
  * @control: union for control data
  * @status: union for status data
@@ -538,7 +540,7 @@ struct ieee80211_tx_info {
         u32 flags;
         u8 band;
 
-        u8 antenna_sel_tx;
+        u8 hw_queue;
 
         u16 ack_frame_id;
 
@@ -564,7 +566,8 @@ struct ieee80211_tx_info {
                         u8 ampdu_ack_len;
                         int ack_signal;
                         u8 ampdu_len;
-                        /* 15 bytes free */
+                        u8 antenna;
+                        /* 14 bytes free */
                 } status;
                 struct {
                         struct ieee80211_tx_rate driver_rates[
@@ -664,6 +667,9 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info)
  * @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)
+ * @RX_FLAG_HT_GF: This frame was received in a HT-greenfield transmission, if
+ *      the driver fills this value it should add %IEEE80211_RADIOTAP_MCS_HAVE_FMT
+ *      to hw.radiotap_mcs_details to advertise that fact
  */
 enum mac80211_rx_flags {
         RX_FLAG_MMIC_ERROR      = 1<<0,
@@ -678,6 +684,7 @@ enum mac80211_rx_flags {
         RX_FLAG_40MHZ           = 1<<10,
         RX_FLAG_SHORT_GI        = 1<<11,
         RX_FLAG_NO_SIGNAL_VAL   = 1<<12,
+        RX_FLAG_HT_GF           = 1<<13,
 };
 
 /**
@@ -888,6 +895,8 @@ enum ieee80211_vif_flags {
  *      these need to be set (or cleared) when the interface is added
  *      or, if supported by the driver, the interface type is changed
  *      at runtime, mac80211 will never touch this field
+ * @hw_queue: hardware queue for each AC
+ * @cab_queue: content-after-beacon (DTIM beacon really) queue, AP mode only
  * @drv_priv: data area for driver use, will always be aligned to
  *      sizeof(void *).
  */
@@ -896,7 +905,12 @@ struct ieee80211_vif {
         struct ieee80211_bss_conf bss_conf;
         u8 addr[ETH_ALEN];
         bool p2p;
+
+        u8 cab_queue;
+        u8 hw_queue[IEEE80211_NUM_ACS];
+
         u32 driver_flags;
+
         /* must be last */
         u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
 };
@@ -929,7 +943,7 @@ static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif)
  *      CCMP key if it requires CCMP encryption of management frames (MFP) to
  *      be done in software.
  * @IEEE80211_KEY_FLAG_PUT_IV_SPACE: This flag should be set by the driver
- *      for a CCMP key if space should be prepared for the IV, but the IV
+ *      if space should be prepared for the IV, but the IV
  *      itself should not be generated. Do not set together with
  *      @IEEE80211_KEY_FLAG_GENERATE_IV on the same key.
  */
@@ -1174,6 +1188,15 @@ enum sta_notify_cmd {
  * @IEEE80211_HW_SCAN_WHILE_IDLE: The device can do hw scan while
  *      being idle (i.e. mac80211 doesn't have to go idle-off during the
  *      the scan).
+ *
+ * @IEEE80211_HW_WANT_MONITOR_VIF: The driver would like to be informed of
+ *      a virtual monitor interface when monitor interfaces are the only
+ *      active interfaces.
+ *
+ * @IEEE80211_HW_QUEUE_CONTROL: The driver wants to control per-interface
+ *      queue mapping in order to use different queues (not just one per AC)
+ *      for different virtual interfaces. See the doc section on HW queue
+ *      control for more details.
  */
 enum ieee80211_hw_flags {
         IEEE80211_HW_HAS_RATE_CONTROL                   = 1<<0,
@@ -1190,13 +1213,13 @@ enum ieee80211_hw_flags {
         IEEE80211_HW_PS_NULLFUNC_STACK                  = 1<<11,
         IEEE80211_HW_SUPPORTS_DYNAMIC_PS                = 1<<12,
         IEEE80211_HW_MFP_CAPABLE                        = 1<<13,
-        /* reuse bit 14 */
+        IEEE80211_HW_WANT_MONITOR_VIF                   = 1<<14,
         IEEE80211_HW_SUPPORTS_STATIC_SMPS               = 1<<15,
         IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS              = 1<<16,
         IEEE80211_HW_SUPPORTS_UAPSD                     = 1<<17,
         IEEE80211_HW_REPORTS_TX_ACK_STATUS              = 1<<18,
         IEEE80211_HW_CONNECTION_MONITOR                 = 1<<19,
-        /* reuse bit 20 */
+        IEEE80211_HW_QUEUE_CONTROL                      = 1<<20,
         IEEE80211_HW_SUPPORTS_PER_STA_GTK               = 1<<21,
         IEEE80211_HW_AP_LINK_PS                         = 1<<22,
         IEEE80211_HW_TX_AMPDU_SETUP_IN_HW               = 1<<23,
@@ -1266,6 +1289,14 @@ enum ieee80211_hw_flags {
  * @max_tx_aggregation_subframes: maximum number of subframes in an
  *      aggregate an HT driver will transmit, used by the peer as a
  *      hint to size its reorder buffer.
+ *
+ * @offchannel_tx_hw_queue: HW queue ID to use for offchannel TX
+ *      (if %IEEE80211_HW_QUEUE_CONTROL is set)
+ *
+ * @radiotap_mcs_details: lists which MCS information can the HW
+ *      reports, by default it is set to _MCS, _GI and _BW but doesn't
+ *      include _FMT. Use %IEEE80211_RADIOTAP_MCS_HAVE_* values, only
+ *      adding _BW is supported today.
  */
 struct ieee80211_hw {
         struct ieee80211_conf conf;
@@ -1286,6 +1317,8 @@ struct ieee80211_hw {
         u8 max_rate_tries;
         u8 max_rx_aggregation_subframes;
         u8 max_tx_aggregation_subframes;
+        u8 offchannel_tx_hw_queue;
+        u8 radiotap_mcs_details;
 };
 
 /**
@@ -1694,6 +1727,61 @@ void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb);
  */
 
 /**
+ * DOC: HW queue control
+ *
+ * Before HW queue control was introduced, mac80211 only had a single static
+ * assignment of per-interface AC software queues to hardware queues. This
+ * was problematic for a few reasons:
+ * 1) off-channel transmissions might get stuck behind other frames
+ * 2) multiple virtual interfaces couldn't be handled correctly
+ * 3) after-DTIM frames could get stuck behind other frames
+ *
+ * To solve this, hardware typically uses multiple different queues for all
+ * the different usages, and this needs to be propagated into mac80211 so it
+ * won't have the same problem with the software queues.
+ *
+ * Therefore, mac80211 now offers the %IEEE80211_HW_QUEUE_CONTROL capability
+ * flag that tells it that the driver implements its own queue control. To do
+ * so, the driver will set up the various queues in each &struct ieee80211_vif
+ * and the offchannel queue in &struct ieee80211_hw. In response, mac80211 will
+ * use those queue IDs in the hw_queue field of &struct ieee80211_tx_info and
+ * if necessary will queue the frame on the right software queue that mirrors
+ * the hardware queue.
+ * Additionally, the driver has to then use these HW queue IDs for the queue
+ * management functions (ieee80211_stop_queue() et al.)
+ *
+ * The driver is free to set up the queue mappings as needed, multiple virtual
+ * interfaces may map to the same hardware queues if needed. The setup has to
+ * happen during add_interface or change_interface callbacks. For example, a
+ * driver supporting station+station and station+AP modes might decide to have
+ * 10 hardware queues to handle different scenarios:
+ *
+ * 4 AC HW queues for 1st vif: 0, 1, 2, 3
+ * 4 AC HW queues for 2nd vif: 4, 5, 6, 7
+ * after-DTIM queue for AP:   8
+ * off-channel queue:         9
+ *
+ * It would then set up the hardware like this:
+ *   hw.offchannel_tx_hw_queue = 9
+ *
+ * and the first virtual interface that is added as follows:
+ *   vif.hw_queue[IEEE80211_AC_VO] = 0
+ *   vif.hw_queue[IEEE80211_AC_VI] = 1
+ *   vif.hw_queue[IEEE80211_AC_BE] = 2
+ *   vif.hw_queue[IEEE80211_AC_BK] = 3
+ *   vif.cab_queue = 8 // if AP mode, otherwise %IEEE80211_INVAL_HW_QUEUE
+ * and the second virtual interface with 4-7.
+ *
+ * If queue 6 gets full, for example, mac80211 would only stop the second
+ * virtual interface's BE queue since virtual interface queues are per AC.
+ *
+ * Note that the vif.cab_queue value should be set to %IEEE80211_INVAL_HW_QUEUE
+ * whenever the queue is not used (i.e. the interface is not in AP mode) if the
+ * queue could potentially be shared since mac80211 will look at cab_queue when
+ * a queue is stopped/woken even if the interface is not in AP mode.
+ */
+
+/**
  * enum ieee80211_filter_flags - hardware filter flags
  *
  * These flags determine what the filter in hardware should be
@@ -1780,6 +1868,18 @@ enum ieee80211_frame_release_type {
 };
 
 /**
+ * enum ieee80211_rate_control_changed - flags to indicate what changed
+ *
+ * @IEEE80211_RC_BW_CHANGED: The bandwidth that can be used to transmit
+ *      to this station changed.
+ * @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed.
+ */
+enum ieee80211_rate_control_changed {
+        IEEE80211_RC_BW_CHANGED         = BIT(0),
+        IEEE80211_RC_SMPS_CHANGED       = BIT(1),
+};
+
+/**
  * struct ieee80211_ops - callbacks from mac80211 to the driver
  *
  * This structure contains various callbacks that the driver may
@@ -1980,6 +2080,14 @@ enum ieee80211_frame_release_type {
  *      up the list of states.
  *      The callback can sleep.
  *
+ * @sta_rc_update: Notifies the driver of changes to the bitrates that can be
+ *      used to transmit to the station. The changes are advertised with bits
+ *      from &enum ieee80211_rate_control_changed and the values are reflected
+ *      in the station data. This callback should only be used when the driver
+ *      uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since
+ *      otherwise the rate control algorithm is notified directly.
+ *      Must be atomic.
+ *
  * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
  *      bursting) for a hardware TX queue.
  *      Returns a negative error code on failure.
@@ -2125,6 +2233,14 @@ enum ieee80211_frame_release_type {
  *      The @tids parameter is a bitmap and tells the driver which TIDs the
  *      frames will be on; it will at most have two bits set.
  *      This callback must be atomic.
+ *
+ * @get_et_sset_count:  Ethtool API to get string-set count.
+ *
+ * @get_et_stats:  Ethtool API to get a set of u64 stats.
+ *
+ * @get_et_strings:  Ethtool API to get a set of strings to describe stats
+ *      and perhaps other supported types of ethtool data-sets.
+ *
  */
 struct ieee80211_ops {
         void (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb);
@@ -2135,6 +2251,7 @@ struct ieee80211_ops {
 #ifdef CONFIG_PM
         int (*suspend)(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan);
         int (*resume)(struct ieee80211_hw *hw);
+        void (*set_wakeup)(struct ieee80211_hw *hw, bool enabled);
 #endif
         int (*add_interface)(struct ieee80211_hw *hw,
                              struct ieee80211_vif *vif);
@@ -2196,8 +2313,12 @@ struct ieee80211_ops {
                          struct ieee80211_sta *sta,
                          enum ieee80211_sta_state old_state,
                          enum ieee80211_sta_state new_state);
+        void (*sta_rc_update)(struct ieee80211_hw *hw,
+                              struct ieee80211_vif *vif,
+                              struct ieee80211_sta *sta,
+                              u32 changed);
         int (*conf_tx)(struct ieee80211_hw *hw,
-                       struct ieee80211_vif *vif, u16 queue,
+                       struct ieee80211_vif *vif, u16 ac,
                        const struct ieee80211_tx_queue_params *params);
         u64 (*get_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
         void (*set_tsf)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
@@ -2250,6 +2371,15 @@ struct ieee80211_ops {
                                         u16 tids, int num_frames,
                                         enum ieee80211_frame_release_type reason,
                                         bool more_data);
+
+        int     (*get_et_sset_count)(struct ieee80211_hw *hw,
+                                     struct ieee80211_vif *vif, int sset);
+        void    (*get_et_stats)(struct ieee80211_hw *hw,
+                                struct ieee80211_vif *vif,
+                                struct ethtool_stats *stats, u64 *data);
+        void    (*get_et_strings)(struct ieee80211_hw *hw,
+                                  struct ieee80211_vif *vif,
+                                  u32 sset, u8 *data);
 };
 
 /**
@@ -2844,6 +2974,7 @@ __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
  */
 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
                                         struct ieee80211_vif *vif,
+                                        enum ieee80211_band band,
                                         size_t frame_len,
                                         struct ieee80211_rate *rate);
 
@@ -3512,19 +3643,6 @@ void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn);
 /* Rate control API */
 
 /**
- * enum rate_control_changed - flags to indicate which parameter changed
- *
- * @IEEE80211_RC_HT_CHANGED: The HT parameters of the operating channel have
- *      changed, rate control algorithm can update its internal state if needed.
- * @IEEE80211_RC_SMPS_CHANGED: The SMPS state of the station changed, the rate
- *      control algorithm needs to adjust accordingly.
- */
-enum rate_control_changed {
-        IEEE80211_RC_HT_CHANGED         = BIT(0),
-        IEEE80211_RC_SMPS_CHANGED       = BIT(1),
-};
-
-/**
  * struct ieee80211_tx_rate_control - rate control information for/from RC algo
  *
  * @hw: The hardware the algorithm is invoked for.
@@ -3569,9 +3687,8 @@ struct rate_control_ops {
         void (*rate_init)(void *priv, struct ieee80211_supported_band *sband,
                           struct ieee80211_sta *sta, void *priv_sta);
         void (*rate_update)(void *priv, struct ieee80211_supported_band *sband,
-                            struct ieee80211_sta *sta,
-                            void *priv_sta, u32 changed,
-                            enum nl80211_channel_type oper_chan_type);
+                            struct ieee80211_sta *sta, void *priv_sta,
+                            u32 changed);
         void (*free_sta)(void *priv, struct ieee80211_sta *sta,
                          void *priv_sta);
 
@@ -3706,8 +3823,20 @@ void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif,
 
 void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif);
 
-int ieee80211_add_srates_ie(struct ieee80211_vif *vif, struct sk_buff *skb);
+int ieee80211_add_srates_ie(struct ieee80211_vif *vif,
+                            struct sk_buff *skb, bool need_basic);
 
 int ieee80211_add_ext_srates_ie(struct ieee80211_vif *vif,
-                                struct sk_buff *skb);
+                                struct sk_buff *skb, bool need_basic);
+
+/**
+ * ieee80211_ave_rssi - report the average rssi for the specified interface
+ *
+ * @vif: the specified virtual interface
+ *
+ * This function return the average rssi value for the requested interface.
+ * It assumes that the given vif is valid.
+ */
+int ieee80211_ave_rssi(struct ieee80211_vif *vif);
+
 #endif /* MAC80211_H */