Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

2 files changed, 203 insertions, 66 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index f2c318655519..e46c437944f7 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -341,8 +341,8 @@ struct vif_params {
  * @seq_len: length of @seq.
  */
 struct key_params {
-        u8 *key;
-        u8 *seq;
+        const u8 *key;
+        const u8 *seq;
         int key_len;
         int seq_len;
         u32 cipher;
@@ -458,7 +458,7 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
  */
 int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
                                   const struct cfg80211_chan_def *chandef,
-                                  enum nl80211_iftype);
+                                  enum nl80211_iftype iftype);
 
 /**
  * ieee80211_chandef_rate_flags - returns rate flags for a channel
@@ -694,8 +694,10 @@ struct cfg80211_ap_settings {
  *
  * @chandef: defines the channel to use after the switch
  * @beacon_csa: beacon data while performing the switch
- * @counter_offset_beacon: offset for the counter within the beacon (tail)
- * @counter_offset_presp: offset for the counter within the probe response
+ * @counter_offsets_beacon: offsets of the counters within the beacon (tail)
+ * @counter_offsets_presp: offsets of the counters within the probe response
+ * @n_counter_offsets_beacon: number of csa counters the beacon (tail)
+ * @n_counter_offsets_presp: number of csa counters in the probe response
  * @beacon_after: beacon data to be used on the new channel
  * @radar_required: whether radar detection is required on the new channel
  * @block_tx: whether transmissions should be blocked while changing
@@ -704,7 +706,10 @@ struct cfg80211_ap_settings {
 struct cfg80211_csa_settings {
         struct cfg80211_chan_def chandef;
         struct cfg80211_beacon_data beacon_csa;
-        u16 counter_offset_beacon, counter_offset_presp;
+        const u16 *counter_offsets_beacon;
+        const u16 *counter_offsets_presp;
+        unsigned int n_counter_offsets_beacon;
+        unsigned int n_counter_offsets_presp;
         struct cfg80211_beacon_data beacon_after;
         bool radar_required;
         bool block_tx;
@@ -868,36 +873,38 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
  * @STATION_INFO_NONPEER_PM: @nonpeer_pm filled
  * @STATION_INFO_CHAIN_SIGNAL: @chain_signal filled
  * @STATION_INFO_CHAIN_SIGNAL_AVG: @chain_signal_avg filled
+ * @STATION_INFO_EXPECTED_THROUGHPUT: @expected_throughput filled
  */
 enum station_info_flags {
-        STATION_INFO_INACTIVE_TIME      = 1<<0,
-        STATION_INFO_RX_BYTES           = 1<<1,
-        STATION_INFO_TX_BYTES           = 1<<2,
-        STATION_INFO_LLID               = 1<<3,
-        STATION_INFO_PLID               = 1<<4,
-        STATION_INFO_PLINK_STATE        = 1<<5,
-        STATION_INFO_SIGNAL             = 1<<6,
-        STATION_INFO_TX_BITRATE         = 1<<7,
-        STATION_INFO_RX_PACKETS         = 1<<8,
-        STATION_INFO_TX_PACKETS         = 1<<9,
-        STATION_INFO_TX_RETRIES         = 1<<10,
-        STATION_INFO_TX_FAILED          = 1<<11,
-        STATION_INFO_RX_DROP_MISC       = 1<<12,
-        STATION_INFO_SIGNAL_AVG         = 1<<13,
-        STATION_INFO_RX_BITRATE         = 1<<14,
-        STATION_INFO_BSS_PARAM          = 1<<15,
-        STATION_INFO_CONNECTED_TIME     = 1<<16,
-        STATION_INFO_ASSOC_REQ_IES      = 1<<17,
-        STATION_INFO_STA_FLAGS          = 1<<18,
-        STATION_INFO_BEACON_LOSS_COUNT  = 1<<19,
-        STATION_INFO_T_OFFSET           = 1<<20,
-        STATION_INFO_LOCAL_PM           = 1<<21,
-        STATION_INFO_PEER_PM            = 1<<22,
-        STATION_INFO_NONPEER_PM         = 1<<23,
-        STATION_INFO_RX_BYTES64         = 1<<24,
-        STATION_INFO_TX_BYTES64         = 1<<25,
-        STATION_INFO_CHAIN_SIGNAL       = 1<<26,
-        STATION_INFO_CHAIN_SIGNAL_AVG   = 1<<27,
+        STATION_INFO_INACTIVE_TIME              = BIT(0),
+        STATION_INFO_RX_BYTES                   = BIT(1),
+        STATION_INFO_TX_BYTES                   = BIT(2),
+        STATION_INFO_LLID                       = BIT(3),
+        STATION_INFO_PLID                       = BIT(4),
+        STATION_INFO_PLINK_STATE                = BIT(5),
+        STATION_INFO_SIGNAL                     = BIT(6),
+        STATION_INFO_TX_BITRATE                 = BIT(7),
+        STATION_INFO_RX_PACKETS                 = BIT(8),
+        STATION_INFO_TX_PACKETS                 = BIT(9),
+        STATION_INFO_TX_RETRIES                 = BIT(10),
+        STATION_INFO_TX_FAILED                  = BIT(11),
+        STATION_INFO_RX_DROP_MISC               = BIT(12),
+        STATION_INFO_SIGNAL_AVG                 = BIT(13),
+        STATION_INFO_RX_BITRATE                 = BIT(14),
+        STATION_INFO_BSS_PARAM                  = BIT(15),
+        STATION_INFO_CONNECTED_TIME             = BIT(16),
+        STATION_INFO_ASSOC_REQ_IES              = BIT(17),
+        STATION_INFO_STA_FLAGS                  = BIT(18),
+        STATION_INFO_BEACON_LOSS_COUNT          = BIT(19),
+        STATION_INFO_T_OFFSET                   = BIT(20),
+        STATION_INFO_LOCAL_PM                   = BIT(21),
+        STATION_INFO_PEER_PM                    = BIT(22),
+        STATION_INFO_NONPEER_PM                 = BIT(23),
+        STATION_INFO_RX_BYTES64                 = BIT(24),
+        STATION_INFO_TX_BYTES64                 = BIT(25),
+        STATION_INFO_CHAIN_SIGNAL               = BIT(26),
+        STATION_INFO_CHAIN_SIGNAL_AVG           = BIT(27),
+        STATION_INFO_EXPECTED_THROUGHPUT        = BIT(28),
 };
 
 /**
@@ -1019,6 +1026,8 @@ struct sta_bss_parameters {
  * @local_pm: local mesh STA power save mode
  * @peer_pm: peer mesh STA power save mode
  * @nonpeer_pm: non-peer mesh STA power save mode
+ * @expected_throughput: expected throughput in kbps (including 802.11 headers)
+ *      towards this station.
  */
 struct station_info {
         u32 filled;
@@ -1057,6 +1066,8 @@ struct station_info {
         enum nl80211_mesh_power_mode peer_pm;
         enum nl80211_mesh_power_mode nonpeer_pm;
 
+        u32 expected_throughput;
+
         /*
          * Note: Add a new enum station_info_flags value for each new field and
          * use it to check which fields are initialized.
@@ -1064,6 +1075,19 @@ struct station_info {
 };
 
 /**
+ * cfg80211_get_station - retrieve information about a given station
+ * @dev: the device where the station is supposed to be connected to
+ * @mac_addr: the mac address of the station of interest
+ * @sinfo: pointer to the structure to fill with the information
+ *
+ * Returns 0 on success and sinfo is filled with the available information
+ * otherwise returns a negative error code and the content of sinfo has to be
+ * considered undefined.
+ */
+int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr,
+                         struct station_info *sinfo);
+
+/**
  * enum monitor_flags - monitor flags
  *
  * Monitor interface configuration flags. Note that these must be the bits
@@ -1164,7 +1188,7 @@ struct bss_parameters {
         int use_cts_prot;
         int use_short_preamble;
         int use_short_slot_time;
-        u8 *basic_rates;
+        const u8 *basic_rates;
         u8 basic_rates_len;
         int ap_isolate;
         int ht_opmode;
@@ -1694,10 +1718,10 @@ struct cfg80211_disassoc_request {
  * @ht_capa_mask:  The bits of ht_capa which are to be used.
  */
 struct cfg80211_ibss_params {
-        u8 *ssid;
-        u8 *bssid;
+        const u8 *ssid;
+        const u8 *bssid;
         struct cfg80211_chan_def chandef;
-        u8 *ie;
+        const u8 *ie;
         u8 ssid_len, ie_len;
         u16 beacon_interval;
         u32 basic_rates;
@@ -1806,8 +1830,8 @@ struct cfg80211_bitrate_mask {
  * @pmkid: The PMK material itself.
  */
 struct cfg80211_pmksa {
-        u8 *bssid;
-        u8 *pmkid;
+        const u8 *bssid;
+        const u8 *pmkid;
 };
 
 /**
@@ -1822,7 +1846,7 @@ struct cfg80211_pmksa {
  * memory, free @mask only!
  */
 struct cfg80211_pkt_pattern {
-        u8 *mask, *pattern;
+        const u8 *mask, *pattern;
         int pattern_len;
         int pkt_offset;
 };
@@ -1986,6 +2010,8 @@ struct cfg80211_update_ft_ies_params {
  * @len: buffer length
  * @no_cck: don't use cck rates for this frame
  * @dont_wait_for_ack: tells the low level not to wait for an ack
+ * @n_csa_offsets: length of csa_offsets array
+ * @csa_offsets: array of all the csa offsets in the frame
  */
 struct cfg80211_mgmt_tx_params {
         struct ieee80211_channel *chan;
@@ -1995,6 +2021,8 @@ struct cfg80211_mgmt_tx_params {
         size_t len;
         bool no_cck;
         bool dont_wait_for_ack;
+        int n_csa_offsets;
+        const u16 *csa_offsets;
 };
 
 /**
@@ -2336,28 +2364,29 @@ struct cfg80211_ops {
 
 
         int     (*add_station)(struct wiphy *wiphy, struct net_device *dev,
-                               u8 *mac, struct station_parameters *params);
+                               const u8 *mac,
+                               struct station_parameters *params);
         int     (*del_station)(struct wiphy *wiphy, struct net_device *dev,
-                               u8 *mac);
+                               const u8 *mac);
         int     (*change_station)(struct wiphy *wiphy, struct net_device *dev,
-                                  u8 *mac, struct station_parameters *params);
+                                  const u8 *mac,
+                                  struct station_parameters *params);
         int     (*get_station)(struct wiphy *wiphy, struct net_device *dev,
-                               u8 *mac, struct station_info *sinfo);
+                               const u8 *mac, struct station_info *sinfo);
         int     (*dump_station)(struct wiphy *wiphy, struct net_device *dev,
-                               int idx, u8 *mac, struct station_info *sinfo);
+                                int idx, u8 *mac, struct station_info *sinfo);
 
         int     (*add_mpath)(struct wiphy *wiphy, struct net_device *dev,
-                               u8 *dst, u8 *next_hop);
+                               const u8 *dst, const u8 *next_hop);
         int     (*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
-                               u8 *dst);
+                               const u8 *dst);
         int     (*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
-                                  u8 *dst, u8 *next_hop);
+                                  const u8 *dst, const u8 *next_hop);
         int     (*get_mpath)(struct wiphy *wiphy, struct net_device *dev,
-                               u8 *dst, u8 *next_hop,
-                               struct mpath_info *pinfo);
+                             u8 *dst, u8 *next_hop, struct mpath_info *pinfo);
         int     (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
-                               int idx, u8 *dst, u8 *next_hop,
-                               struct mpath_info *pinfo);
+                              int idx, u8 *dst, u8 *next_hop,
+                              struct mpath_info *pinfo);
         int     (*get_mesh_config)(struct wiphy *wiphy,
                                 struct net_device *dev,
                                 struct mesh_config *conf);
@@ -2487,11 +2516,11 @@ struct cfg80211_ops {
                                   struct cfg80211_gtk_rekey_data *data);
 
         int     (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev,
-                             u8 *peer, u8 action_code,  u8 dialog_token,
+                             const u8 *peer, u8 action_code,  u8 dialog_token,
                              u16 status_code, u32 peer_capability,
                              const u8 *buf, size_t len);
         int     (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev,
-                             u8 *peer, enum nl80211_tdls_operation oper);
+                             const u8 *peer, enum nl80211_tdls_operation oper);
 
         int     (*probe_client)(struct wiphy *wiphy, struct net_device *dev,
                                 const u8 *peer, u64 *cookie);
@@ -2638,6 +2667,7 @@ struct ieee80211_iface_limit {
  *      between infrastructure and AP types must match. This is required
  *      only in special cases.
  * @radar_detect_widths: bitmap of channel widths supported for radar detection
+ * @radar_detect_regions: bitmap of regions supported for radar detection
  *
  * With this structure the driver can describe which interface
  * combinations it supports concurrently.
@@ -2695,6 +2725,7 @@ struct ieee80211_iface_combination {
         u8 n_limits;
         bool beacon_int_infra_match;
         u8 radar_detect_widths;
+        u8 radar_detect_regions;
 };
 
 struct ieee80211_txrx_stypes {
@@ -2925,6 +2956,17 @@ struct wiphy_vendor_command {
  *      (including P2P GO) or 0 to indicate no such limit is advertised. The
  *      driver is allowed to advertise a theoretical limit that it can reach in
  *      some cases, but may not always reach.
+ *
+ * @max_num_csa_counters: Number of supported csa_counters in beacons
+ *      and probe responses.  This value should be set if the driver
+ *      wishes to limit the number of csa counters. Default (0) means
+ *      infinite.
+ * @max_adj_channel_rssi_comp: max offset of between the channel on which the
+ *      frame was sent and the channel on which the frame was heard for which
+ *      the reported rssi is still valid. If a driver is able to compensate the
+ *      low rssi when a frame is heard on different channel, then it should set
+ *      this variable to the maximal offset for which it can compensate.
+ *      This value should be set in MHz.
  */
 struct wiphy {
         /* assign these fields before you register the wiphy */
@@ -3042,6 +3084,9 @@ struct wiphy {
 
         u16 max_ap_assoc_sta;
 
+        u8 max_num_csa_counters;
+        u8 max_adj_channel_rssi_comp;
+
         char priv[0] __aligned(NETDEV_ALIGN);
 };
 
@@ -3270,7 +3315,7 @@ struct wireless_dev {
                 struct cfg80211_ibss_params ibss;
                 struct cfg80211_connect_params connect;
                 struct cfg80211_cached_keys *keys;
-                u8 *ie;
+                const u8 *ie;
                 size_t ie_len;
                 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
                 u8 ssid[IEEE80211_MAX_SSID_LEN];
@@ -3511,7 +3556,8 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
  * Return: 0 on success, or a negative error code.
  */
 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
-                             enum nl80211_iftype iftype, u8 *bssid, bool qos);
+                             enum nl80211_iftype iftype, const u8 *bssid,
+                             bool qos);
 
 /**
  * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame
@@ -4312,7 +4358,7 @@ void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss,
  * and not try to connect to any AP any more.
  */
 void cfg80211_disconnected(struct net_device *dev, u16 reason,
-                           u8 *ie, size_t ie_len, gfp_t gfp);
+                           const u8 *ie, size_t ie_len, gfp_t gfp);
 
 /**
  * cfg80211_ready_on_channel - notification of remain_on_channel start
@@ -4768,6 +4814,35 @@ int cfg80211_iter_combinations(struct wiphy *wiphy,
                                             void *data),
                                void *data);
 
+/*
+ * cfg80211_stop_iface - trigger interface disconnection
+ *
+ * @wiphy: the wiphy
+ * @wdev: wireless device
+ * @gfp: context flags
+ *
+ * Trigger interface to be stopped as if AP was stopped, IBSS/mesh left, STA
+ * disconnected.
+ *
+ * Note: This doesn't need any locks and is asynchronous.
+ */
+void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev,
+                         gfp_t gfp);
+
+/**
+ * cfg80211_shutdown_all_interfaces - shut down all interfaces for a wiphy
+ * @wiphy: the wiphy to shut down
+ *
+ * This function shuts down all interfaces belonging to this wiphy by
+ * calling dev_close() (and treating non-netdev interfaces as needed).
+ * It shouldn't really be used unless there are some fatal device errors
+ * that really can't be recovered in any other way.
+ *
+ * Callers must hold the RTNL and be able to deal with callbacks into
+ * the driver while the function is running.
+ */
+void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy);
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
 /* wiphy_printk helpers, similar to dev_printk */
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 451c1bf00df9..2c78997bc48d 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1113,7 +1113,9 @@ enum ieee80211_vif_flags {
  * @addr: address of this interface
  * @p2p: indicates whether this AP or STA interface is a p2p
  *      interface, i.e. a GO or p2p-sta respectively
- * @csa_active: marks whether a channel switch is going on
+ * @csa_active: marks whether a channel switch is going on. Internally it is
+ *      write-protected by sdata_lock and local->mtx so holding either is fine
+ *      for read access.
  * @driver_flags: flags/capabilities the driver has for this interface,
  *      these need to be set (or cleared) when the interface is added
  *      or, if supported by the driver, the interface type is changed
@@ -1374,6 +1376,7 @@ struct ieee80211_sta_rates {
  *      the station moves to associated state.
  * @smps_mode: current SMPS mode (off, static or dynamic)
  * @rates: rate control selection table
+ * @tdls: indicates whether the STA is a TDLS peer
  */
 struct ieee80211_sta {
         u32 supp_rates[IEEE80211_NUM_BANDS];
@@ -1388,6 +1391,7 @@ struct ieee80211_sta {
         enum ieee80211_sta_rx_bandwidth bandwidth;
         enum ieee80211_smps_mode smps_mode;
         struct ieee80211_sta_rates __rcu *rates;
+        bool tdls;
 
         /* must be last */
         u8 drv_priv[0] __aligned(sizeof(void *));
@@ -2765,6 +2769,10 @@ enum ieee80211_roc_type {
  *      information in bss_conf is set up and the beacon can be retrieved. A
  *      channel context is bound before this is called.
  * @leave_ibss: Leave the IBSS again.
+ *
+ * @get_expected_throughput: extract the expected throughput towards the
+ *      specified station. The returned value is expressed in Kbps. It returns 0
+ *      if the RC algorithm does not have proper data to provide.
  */
 struct ieee80211_ops {
         void (*tx)(struct ieee80211_hw *hw,
@@ -2958,6 +2966,7 @@ struct ieee80211_ops {
 
         int (*join_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
         void (*leave_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+        u32 (*get_expected_throughput)(struct ieee80211_sta *sta);
 };
 
 /**
@@ -3407,6 +3416,47 @@ void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
  */
 void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets);
 
+#define IEEE80211_MAX_CSA_COUNTERS_NUM 2
+
+/**
+ * struct ieee80211_mutable_offsets - mutable beacon offsets
+ * @tim_offset: position of TIM element
+ * @tim_length: size of TIM element
+ * @csa_counter_offs: array of IEEE80211_MAX_CSA_COUNTERS_NUM offsets
+ *      to CSA counters.  This array can contain zero values which
+ *      should be ignored.
+ */
+struct ieee80211_mutable_offsets {
+        u16 tim_offset;
+        u16 tim_length;
+
+        u16 csa_counter_offs[IEEE80211_MAX_CSA_COUNTERS_NUM];
+};
+
+/**
+ * ieee80211_beacon_get_template - beacon template generation function
+ * @hw: pointer obtained from ieee80211_alloc_hw().
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ * @offs: &struct ieee80211_mutable_offsets pointer to struct that will
+ *      receive the offsets that may be updated by the driver.
+ *
+ * If the driver implements beaconing modes, it must use this function to
+ * obtain the beacon template.
+ *
+ * This function should be used if the beacon frames are generated by the
+ * device, and then the driver must use the returned beacon as the template
+ * The driver or the device are responsible to update the DTIM and, when
+ * applicable, the CSA count.
+ *
+ * The driver is responsible for freeing the returned skb.
+ *
+ * Return: The beacon template. %NULL on error.
+ */
+struct sk_buff *
+ieee80211_beacon_get_template(struct ieee80211_hw *hw,
+                              struct ieee80211_vif *vif,
+                              struct ieee80211_mutable_offsets *offs);
+
 /**
  * ieee80211_beacon_get_tim - beacon generation function
  * @hw: pointer obtained from ieee80211_alloc_hw().
@@ -3418,16 +3468,12 @@ void ieee80211_report_low_ack(struct ieee80211_sta *sta, u32 num_packets);
  *      Set to 0 if invalid (in non-AP modes).
  *
  * If the driver implements beaconing modes, it must use this function to
- * obtain the beacon frame/template.
+ * obtain the beacon frame.
  *
  * If the beacon frames are generated by the host system (i.e., not in
  * hardware/firmware), the driver uses this function to get each beacon
- * frame from mac80211 -- it is responsible for calling this function
- * before the beacon is needed (e.g. based on hardware interrupt).
- *
- * If the beacon frames are generated by the device, then the driver
- * must use the returned beacon as the template and change the TIM IE
- * according to the current DTIM parameters/TIM bitmap.
+ * frame from mac80211 -- it is responsible for calling this function exactly
+ * once before the beacon is needed (e.g. based on hardware interrupt).
  *
  * The driver is responsible for freeing the returned skb.
  *
@@ -3453,6 +3499,20 @@ static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
 }
 
 /**
+ * ieee80211_csa_update_counter - request mac80211 to decrement the csa counter
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ *
+ * The csa counter should be updated after each beacon transmission.
+ * This function is called implicitly when
+ * ieee80211_beacon_get/ieee80211_beacon_get_tim are called, however if the
+ * beacon frames are generated by the device, the driver should call this
+ * function after each beacon transmission to sync mac80211's csa counters.
+ *
+ * Return: new csa counter value
+ */
+u8 ieee80211_csa_update_counter(struct ieee80211_vif *vif);
+
+/**
  * ieee80211_csa_finish - notify mac80211 about channel switch
  * @vif: &struct ieee80211_vif pointer from the add_interface callback.
  *
@@ -4480,6 +4540,8 @@ struct rate_control_ops {
         void (*add_sta_debugfs)(void *priv, void *priv_sta,
                                 struct dentry *dir);
         void (*remove_sta_debugfs)(void *priv, void *priv_sta);
+
+        u32 (*get_expected_throughput)(void *priv_sta);
 };
 
 static inline int rate_supported(struct ieee80211_sta *sta,