17 files changed, 132 insertions, 39 deletions

diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index 86aeef4b9d7..7089f8160ad 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -1488,7 +1488,7 @@ static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
 }
 
 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
-                                                      char *name,
+                                                      const char *name,
                                                       enum nl80211_iftype type,
                                                       u32 *flags,
                                                       struct vif_params *params)
@@ -3477,7 +3477,7 @@ void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
         ar->num_vif--;
 }
 
-struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, char *name,
+struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
                                           enum nl80211_iftype type,
                                           u8 fw_vif_idx, u8 nw_type)
 {
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.h b/drivers/net/wireless/ath/ath6kl/cfg80211.h
index 56b1ebe7981..780f77775a9 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.h
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.h
@@ -25,7 +25,7 @@ enum ath6kl_cfg_suspend_mode {
         ATH6KL_CFG_SUSPEND_SCHED_SCAN,
 };
 
-struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, char *name,
+struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
                                           enum nl80211_iftype type,
                                           u8 fw_vif_idx, u8 nw_type);
 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index aa619186d9b..c24824f8c8a 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -1636,7 +1636,7 @@ mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
  *  create a new virtual interface with the given name
  */
 struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
-                                              char *name,
+                                              const char *name,
                                               enum nl80211_iftype type,
                                               u32 *flags,
                                               struct vif_params *params)
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 92e57f653a3..90b64b01544 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -1033,7 +1033,7 @@ int mwifiex_check_network_compatibility(struct mwifiex_private *priv,
                                         struct mwifiex_bssdescriptor *bss_desc);
 
 struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
-                                              char *name,
+                                              const char *name,
                                               enum nl80211_iftype type,
                                               u32 *flags,
                                               struct vif_params *params);
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 45841627934..7df9b500c80 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -573,6 +573,11 @@
  * @NL80211_CMD_STOP_P2P_DEVICE: Stop the given P2P Device, identified by
  *      its %NL80211_ATTR_WDEV identifier.
  *
+ * @NL80211_CMD_CONN_FAILED: connection request to an AP failed; used to
+ *      notify userspace that AP has rejected the connection request from a
+ *      station, due to particular reason. %NL80211_ATTR_CONN_FAILED_REASON
+ *      is used for this.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -719,6 +724,8 @@ enum nl80211_commands {
         NL80211_CMD_START_P2P_DEVICE,
         NL80211_CMD_STOP_P2P_DEVICE,
 
+        NL80211_CMD_CONN_FAILED,
+
         /* add new commands above here */
 
         /* used to define NL80211_CMD_MAX below */
@@ -1262,6 +1269,10 @@ enum nl80211_commands {
  *      was used to provide the hint. For the different types of
  *      allowed user regulatory hints see nl80211_user_reg_hint_type.
  *
+ * @NL80211_ATTR_CONN_FAILED_REASON: The reason for which AP has rejected
+ *      the connection request from a station. nl80211_connect_failed_reason
+ *      enum has different reasons of connection failure.
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -1517,6 +1528,8 @@ enum nl80211_attrs {
 
         NL80211_ATTR_USER_REG_HINT_TYPE,
 
+        NL80211_ATTR_CONN_FAILED_REASON,
+
         /* add attributes here, update the policy in nl80211.c */
 
         __NL80211_ATTR_AFTER_LAST,
@@ -3045,4 +3058,15 @@ enum nl80211_probe_resp_offload_support_attr {
         NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U =     1<<3,
 };
 
+/**
+ * enum nl80211_connect_failed_reason - connection request failed reasons
+ * @NL80211_CONN_FAIL_MAX_CLIENTS: Maximum number of clients that can be
+ *      handled by the AP is reached.
+ * @NL80211_CONN_FAIL_BLOCKED_CLIENT: Client's MAC is in the AP's blocklist.
+ */
+enum nl80211_connect_failed_reason {
+        NL80211_CONN_FAIL_MAX_CLIENTS,
+        NL80211_CONN_FAIL_BLOCKED_CLIENT,
+};
+
 #endif /* __LINUX_NL80211_H */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 903683b1e5b..ab78b53bd6f 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1580,9 +1580,7 @@ struct cfg80211_gtk_rekey_data {
  * @set_cqm_txe_config: Configure connection quality monitor TX error
  *      thresholds.
  * @sched_scan_start: Tell the driver to start a scheduled scan.
- * @sched_scan_stop: Tell the driver to stop an ongoing scheduled
- *      scan.  The driver_initiated flag specifies whether the driver
- *      itself has informed that the scan has stopped.
+ * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan.
  *
  * @mgmt_frame_register: Notify driver that a management frame type was
  *      registered. Note that this callback may not sleep, and cannot run
@@ -1630,7 +1628,7 @@ struct cfg80211_ops {
         void    (*set_wakeup)(struct wiphy *wiphy, bool enabled);
 
         struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy,
-                                                  char *name,
+                                                  const char *name,
                                                   enum nl80211_iftype type,
                                                   u32 *flags,
                                                   struct vif_params *params);
@@ -3363,6 +3361,25 @@ void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp);
 
 /**
+ * cfg80211_conn_failed - connection request failed notification
+ *
+ * @dev: the netdev
+ * @mac_addr: the station's address
+ * @reason: the reason for connection failure
+ * @gfp: allocation flags
+ *
+ * Whenever a station tries to connect to an AP and if the station
+ * could not connect to the AP as the AP has rejected the connection
+ * for some reasons, this function is called.
+ *
+ * The reason for connection failure can be any of the value from
+ * nl80211_connect_failed_reason enum
+ */
+void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
+                          enum nl80211_connect_failed_reason reason,
+                          gfp_t gfp);
+
+/**
  * cfg80211_rx_mgmt - notification of received, unprocessed management frame
  * @wdev: wireless device receiving the frame
  * @freq: Frequency on which the frame was received in MHz
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index d0deb3edae2..3195a6307f5 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -869,7 +869,7 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local,
 
         } else {
                 ___ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_INITIATOR,
-                                                true);
+                                                false);
         }
 
  out:
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 9bd56a74498..05f3a313db8 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -20,7 +20,8 @@
 #include "rate.h"
 #include "mesh.h"
 
-static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, char *name,
+static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
+                                                const char *name,
                                                 enum nl80211_iftype type,
                                                 u32 *flags,
                                                 struct vif_params *params)
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 97173f8144d..466f4b45dd9 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -70,6 +70,7 @@ DEBUGFS_READONLY_FILE(wep_iv, "%#08x",
 DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s",
         local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver");
 
+#ifdef CONFIG_PM
 static ssize_t reset_write(struct file *file, const char __user *user_buf,
                            size_t count, loff_t *ppos)
 {
@@ -88,6 +89,7 @@ static const struct file_operations reset_ops = {
         .open = simple_open,
         .llseek = noop_llseek,
 };
+#endif
 
 static ssize_t hwflags_read(struct file *file, char __user *user_buf,
                             size_t count, loff_t *ppos)
@@ -245,7 +247,9 @@ void debugfs_hw_add(struct ieee80211_local *local)
         DEBUGFS_ADD(total_ps_buffered);
         DEBUGFS_ADD(wep_iv);
         DEBUGFS_ADD(queues);
+#ifdef CONFIG_PM
         DEBUGFS_ADD_MODE(reset, 0200);
+#endif
         DEBUGFS_ADD(hwflags);
         DEBUGFS_ADD(user_power);
         DEBUGFS_ADD(power);
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 7c082517f0c..5f3620f0bc0 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -278,7 +278,7 @@ static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta,
         if (auth && !sdata->u.ibss.auth_frame_registrations) {
                 ibss_dbg(sdata,
                          "TX Auth SA=%pM DA=%pM BSSID=%pM (auth_transaction=1)\n",
-                         sdata->vif.addr, sdata->u.ibss.bssid, addr);
+                         sdata->vif.addr, addr, sdata->u.ibss.bssid);
                 ieee80211_send_auth(sdata, 1, WLAN_AUTH_OPEN, NULL, 0,
                                     addr, sdata->u.ibss.bssid, NULL, 0, 0);
         }
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 2dbd9e1e358..e714ed8bb19 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1399,7 +1399,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
         sta = sta_info_get(sdata, ifmgd->bssid);
         if (sta) {
                 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
-                ieee80211_sta_tear_down_BA_sessions(sta, tx);
+                ieee80211_sta_tear_down_BA_sessions(sta, false);
         }
         mutex_unlock(&local->sta_mtx);
 
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 9c8cd8b8f75..797dd36a220 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -738,7 +738,7 @@ int __must_check __sta_info_destroy(struct sta_info *sta)
          * will be sufficient.
          */
         set_sta_flag(sta, WLAN_STA_BLOCK_BA);
-        ieee80211_sta_tear_down_BA_sessions(sta, true);
+        ieee80211_sta_tear_down_BA_sessions(sta, false);
 
         ret = sta_info_hash_del(local, sta);
         if (ret)
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index c275bad1206..a5c95274127 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -270,6 +270,7 @@ static bool __rfkill_set_hw_state(struct rfkill *rfkill,
 static void rfkill_set_block(struct rfkill *rfkill, bool blocked)
 {
         unsigned long flags;
+        bool prev, curr;
         int err;
 
         if (unlikely(rfkill->dev.power.power_state.event & PM_EVENT_SLEEP))
@@ -284,6 +285,8 @@ static void rfkill_set_block(struct rfkill *rfkill, bool blocked)
                 rfkill->ops->query(rfkill, rfkill->data);
 
         spin_lock_irqsave(&rfkill->lock, flags);
+        prev = rfkill->state & RFKILL_BLOCK_SW;
+
         if (rfkill->state & RFKILL_BLOCK_SW)
                 rfkill->state |= RFKILL_BLOCK_SW_PREV;
         else
@@ -313,10 +316,13 @@ static void rfkill_set_block(struct rfkill *rfkill, bool blocked)
         }
         rfkill->state &= ~RFKILL_BLOCK_SW_SETCALL;
         rfkill->state &= ~RFKILL_BLOCK_SW_PREV;
+        curr = rfkill->state & RFKILL_BLOCK_SW;
         spin_unlock_irqrestore(&rfkill->lock, flags);
 
         rfkill_led_trigger_event(rfkill);
-        rfkill_event(rfkill);
+
+        if (prev != curr)
+                rfkill_event(rfkill);
 }
 
 #ifdef CONFIG_RFKILL_INPUT
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 8fd0242ee16..3df195a3e33 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -612,6 +612,17 @@ void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
 }
 EXPORT_SYMBOL(cfg80211_del_sta);
 
+void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
+                          enum nl80211_connect_failed_reason reason,
+                          gfp_t gfp)
+{
+        struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+        struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+        nl80211_send_conn_failed_event(rdev, dev, mac_addr, reason, gfp);
+}
+EXPORT_SYMBOL(cfg80211_conn_failed);
+
 struct cfg80211_mgmt_registration {
         struct list_head list;
 
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 222189b6ed5..f1047aea868 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -8364,6 +8364,40 @@ void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
         nlmsg_free(msg);
 }
 
+void nl80211_send_conn_failed_event(struct cfg80211_registered_device *rdev,
+                                    struct net_device *dev, const u8 *mac_addr,
+                                    enum nl80211_connect_failed_reason reason,
+                                    gfp_t gfp)
+{
+        struct sk_buff *msg;
+        void *hdr;
+
+        msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
+        if (!msg)
+                return;
+
+        hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
+        if (!hdr) {
+                nlmsg_free(msg);
+                return;
+        }
+
+        if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
+            nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
+            nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
+                goto nla_put_failure;
+
+        genlmsg_end(msg, hdr);
+
+        genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+                                nl80211_mlme_mcgrp.id, gfp);
+        return;
+
+ nla_put_failure:
+        genlmsg_cancel(msg, hdr);
+        nlmsg_free(msg);
+}
+
 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
                                        const u8 *addr, gfp_t gfp)
 {
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index 9f2616fffb4..f6153516068 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -91,6 +91,11 @@ void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
                                 struct net_device *dev, const u8 *mac_addr,
                                 gfp_t gfp);
 
+void nl80211_send_conn_failed_event(struct cfg80211_registered_device *rdev,
+                                    struct net_device *dev, const u8 *mac_addr,
+                                    enum nl80211_connect_failed_reason reason,
+                                    gfp_t gfp);
+
 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
                       struct wireless_dev *wdev, u32 nlpid,
                       int freq, int sig_dbm,
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 1ad04e54014..844823973da 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -504,9 +504,11 @@ static bool reg_does_bw_fit(const struct ieee80211_freq_range *freq_range,
  *
  * This lets us know if a specific frequency rule is or is not relevant to
  * a specific frequency's band. Bands are device specific and artificial
- * definitions (the "2.4 GHz band" and the "5 GHz band"), however it is
- * safe for now to assume that a frequency rule should not be part of a
- * frequency's band if the start freq or end freq are off by more than 2 GHz.
+ * definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"),
+ * however it is safe for now to assume that a frequency rule should not be
+ * part of a frequency's band if the start freq or end freq are off by more
+ * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 10 GHz for the
+ * 60 GHz band.
  * This resolution can be lowered and should be considered as we add
  * regulatory rule support for other "bands".
  **/
@@ -514,9 +516,16 @@ static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range,
         u32 freq_khz)
 {
 #define ONE_GHZ_IN_KHZ  1000000
-        if (abs(freq_khz - freq_range->start_freq_khz) <= (2 * ONE_GHZ_IN_KHZ))
+        /*
+         * From 802.11ad: directional multi-gigabit (DMG):
+         * Pertaining to operation in a frequency band containing a channel
+         * with the Channel starting frequency above 45 GHz.
+         */
+        u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ?
+                        10 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ;
+        if (abs(freq_khz - freq_range->start_freq_khz) <= limit)
                 return true;
-        if (abs(freq_khz - freq_range->end_freq_khz) <= (2 * ONE_GHZ_IN_KHZ))
+        if (abs(freq_khz - freq_range->end_freq_khz) <= limit)
                 return true;
         return false;
 #undef ONE_GHZ_IN_KHZ
@@ -2193,7 +2202,6 @@ static void print_regdomain_info(const struct ieee80211_regdomain *rd)
 static int __set_regdom(const struct ieee80211_regdomain *rd)
 {
         const struct ieee80211_regdomain *intersected_rd = NULL;
-        struct cfg80211_registered_device *rdev = NULL;
         struct wiphy *request_wiphy;
         /* Some basic sanity checks first */
 
@@ -2305,24 +2313,7 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
                 return 0;
         }
 
-        if (!intersected_rd)
-                return -EINVAL;
-
-        rdev = wiphy_to_dev(request_wiphy);
-
-        rdev->country_ie_alpha2[0] = rd->alpha2[0];
-        rdev->country_ie_alpha2[1] = rd->alpha2[1];
-        rdev->env = last_request->country_ie_env;
-
-        BUG_ON(intersected_rd == rd);
-
-        kfree(rd);
-        rd = NULL;
-
-        reset_regdomains(false);
-        cfg80211_regdomain = intersected_rd;
-
-        return 0;
+        return -EINVAL;
 }