Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

4 files changed, 193 insertions, 13 deletions

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index e46fea8b972e..06b0ed0154a4 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -673,6 +673,36 @@ struct ieee80211_channel_sw_ie {
 } __packed;
 
 /**
+ * struct ieee80211_ext_chansw_ie
+ *
+ * This structure represents the "Extended Channel Switch Announcement element"
+ */
+struct ieee80211_ext_chansw_ie {
+        u8 mode;
+        u8 new_operating_class;
+        u8 new_ch_num;
+        u8 count;
+} __packed;
+
+/**
+ * struct ieee80211_sec_chan_offs_ie - secondary channel offset IE
+ * @sec_chan_offs: secondary channel offset, uses IEEE80211_HT_PARAM_CHA_SEC_*
+ *      values here
+ * This structure represents the "Secondary Channel Offset element"
+ */
+struct ieee80211_sec_chan_offs_ie {
+        u8 sec_chan_offs;
+} __packed;
+
+/**
+ * struct ieee80211_wide_bw_chansw_ie - wide bandwidth channel switch IE
+ */
+struct ieee80211_wide_bw_chansw_ie {
+        u8 new_channel_width;
+        u8 new_center_freq_seg0, new_center_freq_seg1;
+} __packed;
+
+/**
  * struct ieee80211_tim
  *
  * This structure refers to "Traffic Indication Map information element"
@@ -840,12 +870,15 @@ struct ieee80211_mgmt {
                                 } __packed wme_action;
                                 struct{
                                         u8 action_code;
-                                        u8 element_id;
-                                        u8 length;
-                                        struct ieee80211_channel_sw_ie sw_elem;
+                                        u8 variable[0];
                                 } __packed chan_switch;
                                 struct{
                                         u8 action_code;
+                                        struct ieee80211_ext_chansw_ie data;
+                                        u8 variable[0];
+                                } __packed ext_chan_switch;
+                                struct{
+                                        u8 action_code;
                                         u8 dialog_token;
                                         u8 element_id;
                                         u8 length;
@@ -1638,6 +1671,7 @@ enum ieee80211_eid {
 
         WLAN_EID_HT_CAPABILITY = 45,
         WLAN_EID_HT_OPERATION = 61,
+        WLAN_EID_SECONDARY_CHANNEL_OFFSET = 62,
 
         WLAN_EID_RSN = 48,
         WLAN_EID_MMIE = 76,
@@ -1672,6 +1706,8 @@ enum ieee80211_eid {
         WLAN_EID_VHT_CAPABILITY = 191,
         WLAN_EID_VHT_OPERATION = 192,
         WLAN_EID_OPMODE_NOTIF = 199,
+        WLAN_EID_WIDE_BW_CHANNEL_SWITCH = 194,
+        WLAN_EID_CHANNEL_SWITCH_WRAPPER = 196,
 
         /* 802.11ad */
         WLAN_EID_NON_TX_BSSID_CAP =  83,
@@ -1795,6 +1831,7 @@ enum ieee80211_key_len {
 
 /* Public action codes */
 enum ieee80211_pub_actioncode {
+        WLAN_PUB_ACTION_EXT_CHANSW_ANN = 4,
         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
 };
 
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 57870b646974..26b5b692c22b 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2002,6 +2002,12 @@ struct cfg80211_update_ft_ies_params {
  * @update_ft_ies: Provide updated Fast BSS Transition information to the
  *      driver. If the SME is in the driver/firmware, this information can be
  *      used in building Authentication and Reassociation Request frames.
+ *
+ * @crit_proto_start: Indicates a critical protocol needs more link reliability
+ *      for a given duration (milliseconds). The protocol is provided so the
+ *      driver can take the most appropriate actions.
+ * @crit_proto_stop: Indicates critical protocol no longer needs increased link
+ *      reliability. This operation can not fail.
  */
 struct cfg80211_ops {
         int     (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -2231,6 +2237,12 @@ struct cfg80211_ops {
                                          struct cfg80211_chan_def *chandef);
         int     (*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev,
                                  struct cfg80211_update_ft_ies_params *ftie);
+        int     (*crit_proto_start)(struct wiphy *wiphy,
+                                    struct wireless_dev *wdev,
+                                    enum nl80211_crit_proto_id protocol,
+                                    u16 duration);
+        void    (*crit_proto_stop)(struct wiphy *wiphy,
+                                   struct wireless_dev *wdev);
 };
 
 /*
@@ -4024,6 +4036,17 @@ bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
 void cfg80211_ch_switch_notify(struct net_device *dev,
                                struct cfg80211_chan_def *chandef);
 
+/**
+ * ieee80211_operating_class_to_band - convert operating class to band
+ *
+ * @operating_class: the operating class to convert
+ * @band: band pointer to fill
+ *
+ * Returns %true if the conversion was successful, %false otherwise.
+ */
+bool ieee80211_operating_class_to_band(u8 operating_class,
+                                       enum ieee80211_band *band);
+
 /*
  * cfg80211_tdls_oper_request - request userspace to perform TDLS operation
  * @dev: the device on which the operation is requested
@@ -4126,6 +4149,17 @@ void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
                                    struct cfg80211_wowlan_wakeup *wakeup,
                                    gfp_t gfp);
 
+/**
+ * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver.
+ *
+ * @wdev: the wireless device for which critical protocol is stopped.
+ *
+ * This function can be called by the driver to indicate it has reverted
+ * operation back to normal. One reason could be that the duration given
+ * by .crit_proto_start() has expired.
+ */
+void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp);
+
 /* 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 64faf015dd1e..04c2d4670dc6 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -128,6 +128,7 @@ enum ieee80211_ac_numbers {
  *      2^n-1 in the range 1..32767]
  * @cw_max: maximum contention window [like @cw_min]
  * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled
+ * @acm: is mandatory admission control required for the access category
  * @uapsd: is U-APSD mode enabled for the queue
  */
 struct ieee80211_tx_queue_params {
@@ -135,6 +136,7 @@ struct ieee80211_tx_queue_params {
         u16 cw_min;
         u16 cw_max;
         u8 aifs;
+        bool acm;
         bool uapsd;
 };
 
@@ -209,7 +211,7 @@ struct ieee80211_chanctx_conf {
  * @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note
  *      that it is only ever disabled for station mode.
  * @BSS_CHANGED_IDLE: Idle changed for this BSS/interface.
- * @BSS_CHANGED_SSID: SSID changed for this BSS (AP mode)
+ * @BSS_CHANGED_SSID: SSID changed for this BSS (AP and IBSS mode)
  * @BSS_CHANGED_AP_PROBE_RESP: Probe Response changed for this BSS (AP mode)
  * @BSS_CHANGED_PS: PS changed for this BSS (STA mode)
  * @BSS_CHANGED_TXPOWER: TX power setting changed for this interface
@@ -326,7 +328,7 @@ enum ieee80211_rssi_event {
  *      your driver/device needs to do.
  * @ps: power-save mode (STA only). This flag is NOT affected by
  *      offchannel/dynamic_ps operations.
- * @ssid: The SSID of the current vif. Only valid in AP-mode.
+ * @ssid: The SSID of the current vif. Valid in AP and IBSS mode.
  * @ssid_len: Length of SSID given in @ssid.
  * @hidden_ssid: The SSID of the current vif is hidden. Only valid in AP-mode.
  * @txpower: TX power in dBm
@@ -561,6 +563,9 @@ enum mac80211_rate_control_flags {
 /* maximum number of rate stages */
 #define IEEE80211_TX_MAX_RATES  4
 
+/* maximum number of rate table entries */
+#define IEEE80211_TX_RATE_TABLE_SIZE    4
+
 /**
  * struct ieee80211_tx_rate - rate selection/status
  *
@@ -601,8 +606,8 @@ static inline void ieee80211_rate_set_vht(struct ieee80211_tx_rate *rate,
                                           u8 mcs, u8 nss)
 {
         WARN_ON(mcs & ~0xF);
-        WARN_ON(nss & ~0x7);
-        rate->idx = (nss << 4) | mcs;
+        WARN_ON((nss - 1) & ~0x7);
+        rate->idx = ((nss - 1) << 4) | mcs;
 }
 
 static inline u8
@@ -614,7 +619,7 @@ ieee80211_rate_get_vht_mcs(const struct ieee80211_tx_rate *rate)
 static inline u8
 ieee80211_rate_get_vht_nss(const struct ieee80211_tx_rate *rate)
 {
-        return rate->idx >> 4;
+        return (rate->idx >> 4) + 1;
 }
 
 /**
@@ -655,7 +660,11 @@ struct ieee80211_tx_info {
                                         struct ieee80211_tx_rate rates[
                                                 IEEE80211_TX_MAX_RATES];
                                         s8 rts_cts_rate_idx;
-                                        /* 3 bytes free */
+                                        u8 use_rts:1;
+                                        u8 use_cts_prot:1;
+                                        u8 short_preamble:1;
+                                        u8 skip_table:1;
+                                        /* 2 bytes free */
                                 };
                                 /* only needed before rate control */
                                 unsigned long jiffies;
@@ -676,6 +685,8 @@ struct ieee80211_tx_info {
                 struct {
                         struct ieee80211_tx_rate driver_rates[
                                 IEEE80211_TX_MAX_RATES];
+                        u8 pad[4];
+
                         void *rate_driver_data[
                                 IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)];
                 };
@@ -1017,13 +1028,13 @@ struct ieee80211_conf {
  *      the driver passed into mac80211.
  * @block_tx: Indicates whether transmission must be blocked before the
  *      scheduled channel switch, as indicated by the AP.
- * @channel: the new channel to switch to
+ * @chandef: the new channel to switch to
  * @count: the number of TBTT's until the channel switch event
  */
 struct ieee80211_channel_switch {
         u64 timestamp;
         bool block_tx;
-        struct ieee80211_channel *channel;
+        struct cfg80211_chan_def chandef;
         u8 count;
 };
 
@@ -1221,6 +1232,24 @@ enum ieee80211_sta_rx_bandwidth {
 };
 
 /**
+ * struct ieee80211_sta_rates - station rate selection table
+ *
+ * @rcu_head: RCU head used for freeing the table on update
+ * @rates: transmit rates/flags to be used by default.
+ *      Overriding entries per-packet is possible by using cb tx control.
+ */
+struct ieee80211_sta_rates {
+        struct rcu_head rcu_head;
+        struct {
+                s8 idx;
+                u8 count;
+                u8 count_cts;
+                u8 count_rts;
+                u16 flags;
+        } rate[IEEE80211_TX_RATE_TABLE_SIZE];
+};
+
+/**
  * struct ieee80211_sta - station table entry
  *
  * A station table entry represents a station we are possibly
@@ -1247,6 +1276,7 @@ enum ieee80211_sta_rx_bandwidth {
  *      notifications and capabilities. The value is only valid after
  *      the station moves to associated state.
  * @smps_mode: current SMPS mode (off, static or dynamic)
+ * @tx_rates: rate control selection table
  */
 struct ieee80211_sta {
         u32 supp_rates[IEEE80211_NUM_BANDS];
@@ -1260,6 +1290,7 @@ struct ieee80211_sta {
         u8 rx_nss;
         enum ieee80211_sta_rx_bandwidth bandwidth;
         enum ieee80211_smps_mode smps_mode;
+        struct ieee80211_sta_rates __rcu *rates;
 
         /* must be last */
         u8 drv_priv[0] __aligned(sizeof(void *));
@@ -1415,6 +1446,9 @@ struct ieee80211_tx_control {
  *      for different virtual interfaces. See the doc section on HW queue
  *      control for more details.
  *
+ * @IEEE80211_HW_SUPPORTS_RC_TABLE: The driver supports using a rate
+ *      selection table provided by the rate control algorithm.
+ *
  * @IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF: Use the P2P Device address for any
  *      P2P Interface. This will be honoured even if more than one interface
  *      is supported.
@@ -1447,6 +1481,7 @@ enum ieee80211_hw_flags {
         IEEE80211_HW_SUPPORTS_PER_STA_GTK               = 1<<21,
         IEEE80211_HW_AP_LINK_PS                         = 1<<22,
         IEEE80211_HW_TX_AMPDU_SETUP_IN_HW               = 1<<23,
+        IEEE80211_HW_SUPPORTS_RC_TABLE                  = 1<<24,
         IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF              = 1<<25,
         IEEE80211_HW_TIMING_BEACON_ONLY                 = 1<<26,
 };
@@ -3133,6 +3168,25 @@ void ieee80211_sta_set_buffered(struct ieee80211_sta *sta,
                                 u8 tid, bool buffered);
 
 /**
+ * ieee80211_get_tx_rates - get the selected transmit rates for a packet
+ *
+ * Call this function in a driver with per-packet rate selection support
+ * to combine the rate info in the packet tx info with the most recent
+ * rate selection table for the station entry.
+ *
+ * @vif: &struct ieee80211_vif pointer from the add_interface callback.
+ * @sta: the receiver station to which this packet is sent.
+ * @skb: the frame to be transmitted.
+ * @dest: buffer for extracted rate/retry information
+ * @max_rates: maximum number of rates to fetch
+ */
+void ieee80211_get_tx_rates(struct ieee80211_vif *vif,
+                            struct ieee80211_sta *sta,
+                            struct sk_buff *skb,
+                            struct ieee80211_tx_rate *dest,
+                            int max_rates);
+
+/**
  * ieee80211_tx_status - transmit status callback
  *
  * Call this function for all transmitted frames after they have been
@@ -4107,7 +4161,7 @@ void ieee80211_send_bar(struct ieee80211_vif *vif, u8 *ra, u16 tid, u16 ssn);
  *      (deprecated; this will be removed once drivers get updated to use
  *      rate_idx_mask)
  * @rate_idx_mask: user-requested (legacy) rate mask
- * @rate_idx_mcs_mask: user-requested MCS rate mask
+ * @rate_idx_mcs_mask: user-requested MCS rate mask (NULL if not in use)
  * @bss: whether this frame is sent out in AP or IBSS mode
  */
 struct ieee80211_tx_rate_control {
@@ -4119,7 +4173,7 @@ struct ieee80211_tx_rate_control {
         bool rts, short_preamble;
         u8 max_rate_idx;
         u32 rate_idx_mask;
-        u8 rate_idx_mcs_mask[IEEE80211_HT_MCS_MASK_LEN];
+        u8 *rate_idx_mcs_mask;
         bool bss;
 };
 
@@ -4208,6 +4262,22 @@ bool rate_usable_index_exists(struct ieee80211_supported_band *sband,
         return false;
 }
 
+/**
+ * rate_control_set_rates - pass the sta rate selection to mac80211/driver
+ *
+ * When not doing a rate control probe to test rates, rate control should pass
+ * its rate selection to mac80211. If the driver supports receiving a station
+ * rate table, it will use it to ensure that frames are always sent based on
+ * the most recent rate control module decision.
+ *
+ * @hw: pointer as obtained from ieee80211_alloc_hw()
+ * @pubsta: &struct ieee80211_sta pointer to the target destination.
+ * @rates: new tx rate set to be used for this station.
+ */
+int rate_control_set_rates(struct ieee80211_hw *hw,
+                           struct ieee80211_sta *pubsta,
+                           struct ieee80211_sta_rates *rates);
+
 int ieee80211_rate_control_register(struct rate_control_ops *ops);
 void ieee80211_rate_control_unregister(struct rate_control_ops *ops);
 
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 79da8710448e..d1e48b5e348f 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -639,6 +639,13 @@
  *      with the relevant Information Elements. This event is used to report
  *      received FT IEs (MDIE, FTIE, RSN IE, TIE, RICIE).
  *
+ * @NL80211_CMD_CRIT_PROTOCOL_START: Indicates user-space will start running
+ *      a critical protocol that needs more reliability in the connection to
+ *      complete.
+ *
+ * @NL80211_CMD_CRIT_PROTOCOL_STOP: Indicates the connection reliability can
+ *      return back to normal.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -798,6 +805,9 @@ enum nl80211_commands {
         NL80211_CMD_UPDATE_FT_IES,
         NL80211_CMD_FT_EVENT,
 
+        NL80211_CMD_CRIT_PROTOCOL_START,
+        NL80211_CMD_CRIT_PROTOCOL_STOP,
+
         /* add new commands above here */
 
         /* used to define NL80211_CMD_MAX below */
@@ -1414,6 +1424,11 @@ enum nl80211_commands {
  * @NL80211_ATTR_IE_RIC: Resource Information Container Information
  *      Element
  *
+ * @NL80211_ATTR_CRIT_PROT_ID: critical protocol identifier requiring increased
+ *      reliability, see &enum nl80211_crit_proto_id (u16).
+ * @NL80211_ATTR_MAX_CRIT_PROT_DURATION: duration in milliseconds in which
+ *      the connection should have increased reliability (u16).
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -1709,6 +1724,9 @@ enum nl80211_attrs {
         NL80211_ATTR_MDID,
         NL80211_ATTR_IE_RIC,
 
+        NL80211_ATTR_CRIT_PROT_ID,
+        NL80211_ATTR_MAX_CRIT_PROT_DURATION,
+
         /* add attributes here, update the policy in nl80211.c */
 
         __NL80211_ATTR_AFTER_LAST,
@@ -3682,4 +3700,25 @@ enum nl80211_protocol_features {
         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP =     1 << 0,
 };
 
+/**
+ * enum nl80211_crit_proto_id - nl80211 critical protocol identifiers
+ *
+ * @NL80211_CRIT_PROTO_UNSPEC: protocol unspecified.
+ * @NL80211_CRIT_PROTO_DHCP: BOOTP or DHCPv6 protocol.
+ * @NL80211_CRIT_PROTO_EAPOL: EAPOL protocol.
+ * @NL80211_CRIT_PROTO_APIPA: APIPA protocol.
+ * @NUM_NL80211_CRIT_PROTO: must be kept last.
+ */
+enum nl80211_crit_proto_id {
+        NL80211_CRIT_PROTO_UNSPEC,
+        NL80211_CRIT_PROTO_DHCP,
+        NL80211_CRIT_PROTO_EAPOL,
+        NL80211_CRIT_PROTO_APIPA,
+        /* add other protocols before this one */
+        NUM_NL80211_CRIT_PROTO
+};
+
+/* maximum duration for critical protocol measures */
+#define NL80211_CRIT_PROTO_MAX_DURATION         5000 /* msec */
+
 #endif /* __LINUX_NL80211_H */