Initial commit: OpenHarmony-v4.0-ReleaseOpenHarmony-v4.0-Release

1 files changed, 1355 insertions, 0 deletions

diff --git a/net/wireless/sme.c b/net/wireless/sme.c
new file mode 100644
index 000000000..060e365c8
--- /dev/null
+++ b/net/wireless/sme.c
@@ -0,0 +1,1355 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SME code for cfg80211
+ * both driver SME event handling and the SME implementation
+ * (for nl80211's connect() and wext)
+ *
+ * Copyright 2009       Johannes Berg <johannes@sipsolutions.net>
+ * Copyright (C) 2009, 2020 Intel Corporation. All rights reserved.
+ * Copyright 2017       Intel Deutschland GmbH
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/wireless.h>
+#include <linux/export.h>
+#include <net/iw_handler.h>
+#include <net/cfg80211.h>
+#include <net/rtnetlink.h>
+#include "nl80211.h"
+#include "reg.h"
+#include "rdev-ops.h"
+
+/*
+ * Software SME in cfg80211, using auth/assoc/deauth calls to the
+ * driver. This is for implementing nl80211's connect/disconnect
+ * and wireless extensions (if configured.)
+ */
+
+struct cfg80211_conn {
+        struct cfg80211_connect_params params;
+        /* these are sub-states of the _CONNECTING sme_state */
+        enum {
+                CFG80211_CONN_SCANNING,
+                CFG80211_CONN_SCAN_AGAIN,
+                CFG80211_CONN_AUTHENTICATE_NEXT,
+                CFG80211_CONN_AUTHENTICATING,
+                CFG80211_CONN_AUTH_FAILED_TIMEOUT,
+                CFG80211_CONN_ASSOCIATE_NEXT,
+                CFG80211_CONN_ASSOCIATING,
+                CFG80211_CONN_ASSOC_FAILED,
+                CFG80211_CONN_ASSOC_FAILED_TIMEOUT,
+                CFG80211_CONN_DEAUTH,
+                CFG80211_CONN_ABANDON,
+                CFG80211_CONN_CONNECTED,
+        } state;
+        u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
+        const u8 *ie;
+        size_t ie_len;
+        bool auto_auth, prev_bssid_valid;
+};
+
+static void cfg80211_sme_free(struct wireless_dev *wdev)
+{
+        if (!wdev->conn)
+                return;
+
+        kfree(wdev->conn->ie);
+        kfree(wdev->conn);
+        wdev->conn = NULL;
+}
+
+static int cfg80211_conn_scan(struct wireless_dev *wdev)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        struct cfg80211_scan_request *request;
+        int n_channels, err;
+
+        ASSERT_RTNL();
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (rdev->scan_req || rdev->scan_msg)
+                return -EBUSY;
+
+        if (wdev->conn->params.channel)
+                n_channels = 1;
+        else
+                n_channels = ieee80211_get_num_supported_channels(wdev->wiphy);
+
+        request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
+                          sizeof(request->channels[0]) * n_channels,
+                          GFP_KERNEL);
+        if (!request)
+                return -ENOMEM;
+
+        if (wdev->conn->params.channel) {
+                enum nl80211_band band = wdev->conn->params.channel->band;
+                struct ieee80211_supported_band *sband =
+                        wdev->wiphy->bands[band];
+
+                if (!sband) {
+                        kfree(request);
+                        return -EINVAL;
+                }
+                request->channels[0] = wdev->conn->params.channel;
+                request->rates[band] = (1 << sband->n_bitrates) - 1;
+        } else {
+                int i = 0, j;
+                enum nl80211_band band;
+                struct ieee80211_supported_band *bands;
+                struct ieee80211_channel *channel;
+
+                for (band = 0; band < NUM_NL80211_BANDS; band++) {
+                        bands = wdev->wiphy->bands[band];
+                        if (!bands)
+                                continue;
+                        for (j = 0; j < bands->n_channels; j++) {
+                                channel = &bands->channels[j];
+                                if (channel->flags & IEEE80211_CHAN_DISABLED)
+                                        continue;
+                                request->channels[i++] = channel;
+                        }
+                        request->rates[band] = (1 << bands->n_bitrates) - 1;
+                }
+                n_channels = i;
+        }
+        request->n_channels = n_channels;
+        request->ssids = (void *)&request->channels[n_channels];
+        request->n_ssids = 1;
+
+        memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
+                wdev->conn->params.ssid_len);
+        request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
+
+        eth_broadcast_addr(request->bssid);
+
+        request->wdev = wdev;
+        request->wiphy = &rdev->wiphy;
+        request->scan_start = jiffies;
+
+        rdev->scan_req = request;
+
+        err = rdev_scan(rdev, request);
+        if (!err) {
+                wdev->conn->state = CFG80211_CONN_SCANNING;
+                nl80211_send_scan_start(rdev, wdev);
+                dev_hold(wdev->netdev);
+        } else {
+                rdev->scan_req = NULL;
+                kfree(request);
+        }
+        return err;
+}
+
+static int cfg80211_conn_do_work(struct wireless_dev *wdev,
+                                 enum nl80211_timeout_reason *treason)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        struct cfg80211_connect_params *params;
+        struct cfg80211_assoc_request req = {};
+        int err;
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (!wdev->conn)
+                return 0;
+
+        params = &wdev->conn->params;
+
+        switch (wdev->conn->state) {
+        case CFG80211_CONN_SCANNING:
+                /* didn't find it during scan ... */
+                return -ENOENT;
+        case CFG80211_CONN_SCAN_AGAIN:
+                return cfg80211_conn_scan(wdev);
+        case CFG80211_CONN_AUTHENTICATE_NEXT:
+                if (WARN_ON(!rdev->ops->auth))
+                        return -EOPNOTSUPP;
+                wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
+                return cfg80211_mlme_auth(rdev, wdev->netdev,
+                                          params->channel, params->auth_type,
+                                          params->bssid,
+                                          params->ssid, params->ssid_len,
+                                          NULL, 0,
+                                          params->key, params->key_len,
+                                          params->key_idx, NULL, 0);
+        case CFG80211_CONN_AUTH_FAILED_TIMEOUT:
+                *treason = NL80211_TIMEOUT_AUTH;
+                return -ENOTCONN;
+        case CFG80211_CONN_ASSOCIATE_NEXT:
+                if (WARN_ON(!rdev->ops->assoc))
+                        return -EOPNOTSUPP;
+                wdev->conn->state = CFG80211_CONN_ASSOCIATING;
+                if (wdev->conn->prev_bssid_valid)
+                        req.prev_bssid = wdev->conn->prev_bssid;
+                req.ie = params->ie;
+                req.ie_len = params->ie_len;
+                req.use_mfp = params->mfp != NL80211_MFP_NO;
+                req.crypto = params->crypto;
+                req.flags = params->flags;
+                req.ht_capa = params->ht_capa;
+                req.ht_capa_mask = params->ht_capa_mask;
+                req.vht_capa = params->vht_capa;
+                req.vht_capa_mask = params->vht_capa_mask;
+
+                err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
+                                          params->bssid, params->ssid,
+                                          params->ssid_len, &req);
+                if (err)
+                        cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
+                                             NULL, 0,
+                                             WLAN_REASON_DEAUTH_LEAVING,
+                                             false);
+                return err;
+        case CFG80211_CONN_ASSOC_FAILED_TIMEOUT:
+                *treason = NL80211_TIMEOUT_ASSOC;
+                fallthrough;
+        case CFG80211_CONN_ASSOC_FAILED:
+                cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
+                                     NULL, 0,
+                                     WLAN_REASON_DEAUTH_LEAVING, false);
+                return -ENOTCONN;
+        case CFG80211_CONN_DEAUTH:
+                cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
+                                     NULL, 0,
+                                     WLAN_REASON_DEAUTH_LEAVING, false);
+                fallthrough;
+        case CFG80211_CONN_ABANDON:
+                /* free directly, disconnected event already sent */
+                cfg80211_sme_free(wdev);
+                return 0;
+        default:
+                return 0;
+        }
+}
+
+void cfg80211_conn_work(struct work_struct *work)
+{
+        struct cfg80211_registered_device *rdev =
+                container_of(work, struct cfg80211_registered_device, conn_work);
+        struct wireless_dev *wdev;
+        u8 bssid_buf[ETH_ALEN], *bssid = NULL;
+        enum nl80211_timeout_reason treason;
+
+        rtnl_lock();
+
+        list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
+                if (!wdev->netdev)
+                        continue;
+
+                wdev_lock(wdev);
+                if (!netif_running(wdev->netdev)) {
+                        wdev_unlock(wdev);
+                        continue;
+                }
+                if (!wdev->conn ||
+                    wdev->conn->state == CFG80211_CONN_CONNECTED) {
+                        wdev_unlock(wdev);
+                        continue;
+                }
+                if (wdev->conn->params.bssid) {
+                        memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
+                        bssid = bssid_buf;
+                }
+                treason = NL80211_TIMEOUT_UNSPECIFIED;
+                if (cfg80211_conn_do_work(wdev, &treason)) {
+                        struct cfg80211_connect_resp_params cr;
+
+                        memset(&cr, 0, sizeof(cr));
+                        cr.status = -1;
+                        cr.bssid = bssid;
+                        cr.timeout_reason = treason;
+                        __cfg80211_connect_result(wdev->netdev, &cr, false);
+                }
+                wdev_unlock(wdev);
+        }
+
+        rtnl_unlock();
+}
+
+/* Returned bss is reference counted and must be cleaned up appropriately. */
+static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        struct cfg80211_bss *bss;
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
+                               wdev->conn->params.bssid,
+                               wdev->conn->params.ssid,
+                               wdev->conn->params.ssid_len,
+                               wdev->conn_bss_type,
+                               IEEE80211_PRIVACY(wdev->conn->params.privacy));
+        if (!bss)
+                return NULL;
+
+        memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
+        wdev->conn->params.bssid = wdev->conn->bssid;
+        wdev->conn->params.channel = bss->channel;
+        wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
+        schedule_work(&rdev->conn_work);
+
+        return bss;
+}
+
+static void __cfg80211_sme_scan_done(struct net_device *dev)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        struct cfg80211_bss *bss;
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (!wdev->conn)
+                return;
+
+        if (wdev->conn->state != CFG80211_CONN_SCANNING &&
+            wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
+                return;
+
+        bss = cfg80211_get_conn_bss(wdev);
+        if (bss)
+                cfg80211_put_bss(&rdev->wiphy, bss);
+        else
+                schedule_work(&rdev->conn_work);
+}
+
+void cfg80211_sme_scan_done(struct net_device *dev)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+
+        wdev_lock(wdev);
+        __cfg80211_sme_scan_done(dev);
+        wdev_unlock(wdev);
+}
+
+void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len)
+{
+        struct wiphy *wiphy = wdev->wiphy;
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+        struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
+        u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED)
+                return;
+
+        if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
+            wdev->conn->auto_auth &&
+            wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
+                /* select automatically between only open, shared, leap */
+                switch (wdev->conn->params.auth_type) {
+                case NL80211_AUTHTYPE_OPEN_SYSTEM:
+                        if (wdev->connect_keys)
+                                wdev->conn->params.auth_type =
+                                        NL80211_AUTHTYPE_SHARED_KEY;
+                        else
+                                wdev->conn->params.auth_type =
+                                        NL80211_AUTHTYPE_NETWORK_EAP;
+                        break;
+                case NL80211_AUTHTYPE_SHARED_KEY:
+                        wdev->conn->params.auth_type =
+                                NL80211_AUTHTYPE_NETWORK_EAP;
+                        break;
+                default:
+                        /* huh? */
+                        wdev->conn->params.auth_type =
+                                NL80211_AUTHTYPE_OPEN_SYSTEM;
+                        break;
+                }
+                wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
+                schedule_work(&rdev->conn_work);
+        } else if (status_code != WLAN_STATUS_SUCCESS) {
+                struct cfg80211_connect_resp_params cr;
+
+                memset(&cr, 0, sizeof(cr));
+                cr.status = status_code;
+                cr.bssid = mgmt->bssid;
+                cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED;
+                __cfg80211_connect_result(wdev->netdev, &cr, false);
+        } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
+                wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
+                schedule_work(&rdev->conn_work);
+        }
+}
+
+bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+        if (!wdev->conn)
+                return false;
+
+        if (status == WLAN_STATUS_SUCCESS) {
+                wdev->conn->state = CFG80211_CONN_CONNECTED;
+                return false;
+        }
+
+        if (wdev->conn->prev_bssid_valid) {
+                /*
+                 * Some stupid APs don't accept reassoc, so we
+                 * need to fall back to trying regular assoc;
+                 * return true so no event is sent to userspace.
+                 */
+                wdev->conn->prev_bssid_valid = false;
+                wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
+                schedule_work(&rdev->conn_work);
+                return true;
+        }
+
+        wdev->conn->state = CFG80211_CONN_ASSOC_FAILED;
+        schedule_work(&rdev->conn_work);
+        return false;
+}
+
+void cfg80211_sme_deauth(struct wireless_dev *wdev)
+{
+        cfg80211_sme_free(wdev);
+}
+
+void cfg80211_sme_auth_timeout(struct wireless_dev *wdev)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+        if (!wdev->conn)
+                return;
+
+        wdev->conn->state = CFG80211_CONN_AUTH_FAILED_TIMEOUT;
+        schedule_work(&rdev->conn_work);
+}
+
+void cfg80211_sme_disassoc(struct wireless_dev *wdev)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+        if (!wdev->conn)
+                return;
+
+        wdev->conn->state = CFG80211_CONN_DEAUTH;
+        schedule_work(&rdev->conn_work);
+}
+
+void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+        if (!wdev->conn)
+                return;
+
+        wdev->conn->state = CFG80211_CONN_ASSOC_FAILED_TIMEOUT;
+        schedule_work(&rdev->conn_work);
+}
+
+void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+        if (!wdev->conn)
+                return;
+
+        wdev->conn->state = CFG80211_CONN_ABANDON;
+        schedule_work(&rdev->conn_work);
+}
+
+static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev,
+                                     const u8 *ies, size_t ies_len,
+                                     const u8 **out_ies, size_t *out_ies_len)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        u8 *buf;
+        size_t offs;
+
+        if (!rdev->wiphy.extended_capabilities_len ||
+            (ies && cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY, ies, ies_len))) {
+                *out_ies = kmemdup(ies, ies_len, GFP_KERNEL);
+                if (!*out_ies)
+                        return -ENOMEM;
+                *out_ies_len = ies_len;
+                return 0;
+        }
+
+        buf = kmalloc(ies_len + rdev->wiphy.extended_capabilities_len + 2,
+                      GFP_KERNEL);
+        if (!buf)
+                return -ENOMEM;
+
+        if (ies_len) {
+                static const u8 before_extcapa[] = {
+                        /* not listing IEs expected to be created by driver */
+                        WLAN_EID_RSN,
+                        WLAN_EID_QOS_CAPA,
+                        WLAN_EID_RRM_ENABLED_CAPABILITIES,
+                        WLAN_EID_MOBILITY_DOMAIN,
+                        WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
+                        WLAN_EID_BSS_COEX_2040,
+                };
+
+                offs = ieee80211_ie_split(ies, ies_len, before_extcapa,
+                                          ARRAY_SIZE(before_extcapa), 0);
+                memcpy(buf, ies, offs);
+                /* leave a whole for extended capabilities IE */
+                memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2,
+                       ies + offs, ies_len - offs);
+        } else {
+                offs = 0;
+        }
+
+        /* place extended capabilities IE (with only driver capabilities) */
+        buf[offs] = WLAN_EID_EXT_CAPABILITY;
+        buf[offs + 1] = rdev->wiphy.extended_capabilities_len;
+        memcpy(buf + offs + 2,
+               rdev->wiphy.extended_capabilities,
+               rdev->wiphy.extended_capabilities_len);
+
+        *out_ies = buf;
+        *out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2;
+
+        return 0;
+}
+
+static int cfg80211_sme_connect(struct wireless_dev *wdev,
+                                struct cfg80211_connect_params *connect,
+                                const u8 *prev_bssid)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        struct cfg80211_bss *bss;
+        int err;
+
+        if (!rdev->ops->auth || !rdev->ops->assoc)
+                return -EOPNOTSUPP;
+
+        if (wdev->current_bss) {
+                cfg80211_unhold_bss(wdev->current_bss);
+                cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+                wdev->current_bss = NULL;
+
+                cfg80211_sme_free(wdev);
+        }
+
+        if (wdev->conn)
+                return -EINPROGRESS;
+
+        wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL);
+        if (!wdev->conn)
+                return -ENOMEM;
+
+        /*
+         * Copy all parameters, and treat explicitly IEs, BSSID, SSID.
+         */
+        memcpy(&wdev->conn->params, connect, sizeof(*connect));
+        if (connect->bssid) {
+                wdev->conn->params.bssid = wdev->conn->bssid;
+                memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN);
+        }
+
+        if (cfg80211_sme_get_conn_ies(wdev, connect->ie, connect->ie_len,
+                                      &wdev->conn->ie,
+                                      &wdev->conn->params.ie_len)) {
+                kfree(wdev->conn);
+                wdev->conn = NULL;
+                return -ENOMEM;
+        }
+        wdev->conn->params.ie = wdev->conn->ie;
+
+        if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
+                wdev->conn->auto_auth = true;
+                /* start with open system ... should mostly work */
+                wdev->conn->params.auth_type =
+                        NL80211_AUTHTYPE_OPEN_SYSTEM;
+        } else {
+                wdev->conn->auto_auth = false;
+        }
+
+        wdev->conn->params.ssid = wdev->ssid;
+        wdev->conn->params.ssid_len = wdev->ssid_len;
+
+        /* see if we have the bss already */
+        bss = cfg80211_get_conn_bss(wdev);
+
+        if (prev_bssid) {
+                memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN);
+                wdev->conn->prev_bssid_valid = true;
+        }
+
+        /* we're good if we have a matching bss struct */
+        if (bss) {
+                enum nl80211_timeout_reason treason;
+
+                err = cfg80211_conn_do_work(wdev, &treason);
+                cfg80211_put_bss(wdev->wiphy, bss);
+        } else {
+                /* otherwise we'll need to scan for the AP first */
+                err = cfg80211_conn_scan(wdev);
+
+                /*
+                 * If we can't scan right now, then we need to scan again
+                 * after the current scan finished, since the parameters
+                 * changed (unless we find a good AP anyway).
+                 */
+                if (err == -EBUSY) {
+                        err = 0;
+                        wdev->conn->state = CFG80211_CONN_SCAN_AGAIN;
+                }
+        }
+
+        if (err)
+                cfg80211_sme_free(wdev);
+
+        return err;
+}
+
+static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason)
+{
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        int err;
+
+        if (!wdev->conn)
+                return 0;
+
+        if (!rdev->ops->deauth)
+                return -EOPNOTSUPP;
+
+        if (wdev->conn->state == CFG80211_CONN_SCANNING ||
+            wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) {
+                err = 0;
+                goto out;
+        }
+
+        /* wdev->conn->params.bssid must be set if > SCANNING */
+        err = cfg80211_mlme_deauth(rdev, wdev->netdev,
+                                   wdev->conn->params.bssid,
+                                   NULL, 0, reason, false);
+ out:
+        cfg80211_sme_free(wdev);
+        return err;
+}
+
+/*
+ * code shared for in-device and software SME
+ */
+
+static bool cfg80211_is_all_idle(void)
+{
+        struct cfg80211_registered_device *rdev;
+        struct wireless_dev *wdev;
+        bool is_all_idle = true;
+
+        /*
+         * All devices must be idle as otherwise if you are actively
+         * scanning some new beacon hints could be learned and would
+         * count as new regulatory hints.
+         * Also if there is any other active beaconing interface we
+         * need not issue a disconnect hint and reset any info such
+         * as chan dfs state, etc.
+         */
+        list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+                list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
+                        wdev_lock(wdev);
+                        if (wdev->conn || wdev->current_bss ||
+                            cfg80211_beaconing_iface_active(wdev))
+                                is_all_idle = false;
+                        wdev_unlock(wdev);
+                }
+        }
+
+        return is_all_idle;
+}
+
+static void disconnect_work(struct work_struct *work)
+{
+        rtnl_lock();
+        if (cfg80211_is_all_idle())
+                regulatory_hint_disconnect();
+        rtnl_unlock();
+}
+
+DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
+
+
+/*
+ * API calls for drivers implementing connect/disconnect and
+ * SME event handling
+ */
+
+/* This method must consume bss one way or another */
+void __cfg80211_connect_result(struct net_device *dev,
+                               struct cfg80211_connect_resp_params *cr,
+                               bool wextev)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        const u8 *country_ie;
+#ifdef CONFIG_CFG80211_WEXT
+        union iwreq_data wrqu;
+#endif
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
+                    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) {
+                cfg80211_put_bss(wdev->wiphy, cr->bss);
+                return;
+        }
+
+        wdev->unprot_beacon_reported = 0;
+        nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev, cr,
+                                    GFP_KERNEL);
+
+#ifdef CONFIG_CFG80211_WEXT
+        if (wextev) {
+                if (cr->req_ie && cr->status == WLAN_STATUS_SUCCESS) {
+                        memset(&wrqu, 0, sizeof(wrqu));
+                        wrqu.data.length = cr->req_ie_len;
+                        wireless_send_event(dev, IWEVASSOCREQIE, &wrqu,
+                                            cr->req_ie);
+                }
+
+                if (cr->resp_ie && cr->status == WLAN_STATUS_SUCCESS) {
+                        memset(&wrqu, 0, sizeof(wrqu));
+                        wrqu.data.length = cr->resp_ie_len;
+                        wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu,
+                                            cr->resp_ie);
+                }
+
+                memset(&wrqu, 0, sizeof(wrqu));
+                wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+                if (cr->bssid && cr->status == WLAN_STATUS_SUCCESS) {
+                        memcpy(wrqu.ap_addr.sa_data, cr->bssid, ETH_ALEN);
+                        memcpy(wdev->wext.prev_bssid, cr->bssid, ETH_ALEN);
+                        wdev->wext.prev_bssid_valid = true;
+                }
+                wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+        }
+#endif
+
+        if (!cr->bss && (cr->status == WLAN_STATUS_SUCCESS)) {
+                WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect);
+                cr->bss = cfg80211_get_bss(wdev->wiphy, NULL, cr->bssid,
+                                           wdev->ssid, wdev->ssid_len,
+                                           wdev->conn_bss_type,
+                                           IEEE80211_PRIVACY_ANY);
+                if (cr->bss)
+                        cfg80211_hold_bss(bss_from_pub(cr->bss));
+        }
+
+        if (wdev->current_bss) {
+                cfg80211_unhold_bss(wdev->current_bss);
+                cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+                wdev->current_bss = NULL;
+        }
+
+        if (cr->status != WLAN_STATUS_SUCCESS) {
+                kfree_sensitive(wdev->connect_keys);
+                wdev->connect_keys = NULL;
+                wdev->ssid_len = 0;
+                wdev->conn_owner_nlportid = 0;
+                if (cr->bss) {
+                        cfg80211_unhold_bss(bss_from_pub(cr->bss));
+                        cfg80211_put_bss(wdev->wiphy, cr->bss);
+                }
+                cfg80211_sme_free(wdev);
+                return;
+        }
+
+        if (WARN_ON(!cr->bss))
+                return;
+
+        wdev->current_bss = bss_from_pub(cr->bss);
+
+        if (!(wdev->wiphy->flags & WIPHY_FLAG_HAS_STATIC_WEP))
+                cfg80211_upload_connect_keys(wdev);
+
+        rcu_read_lock();
+        country_ie = ieee80211_bss_get_ie(cr->bss, WLAN_EID_COUNTRY);
+        if (!country_ie) {
+                rcu_read_unlock();
+                return;
+        }
+
+        country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC);
+        rcu_read_unlock();
+
+        if (!country_ie)
+                return;
+
+        /*
+         * ieee80211_bss_get_ie() ensures we can access:
+         * - country_ie + 2, the start of the country ie data, and
+         * - and country_ie[1] which is the IE length
+         */
+        regulatory_hint_country_ie(wdev->wiphy, cr->bss->channel->band,
+                                   country_ie + 2, country_ie[1]);
+        kfree(country_ie);
+}
+
+/* Consumes bss object one way or another */
+void cfg80211_connect_done(struct net_device *dev,
+                           struct cfg80211_connect_resp_params *params,
+                           gfp_t gfp)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        struct cfg80211_event *ev;
+        unsigned long flags;
+        u8 *next;
+
+        if (params->bss) {
+                struct cfg80211_internal_bss *ibss = bss_from_pub(params->bss);
+
+                if (list_empty(&ibss->list)) {
+                        struct cfg80211_bss *found = NULL, *tmp = params->bss;
+
+                        found = cfg80211_get_bss(wdev->wiphy, NULL,
+                                                 params->bss->bssid,
+                                                 wdev->ssid, wdev->ssid_len,
+                                                 wdev->conn_bss_type,
+                                                 IEEE80211_PRIVACY_ANY);
+                        if (found) {
+                                /* The same BSS is already updated so use it
+                                 * instead, as it has latest info.
+                                 */
+                                params->bss = found;
+                        } else {
+                                /* Update with BSS provided by driver, it will
+                                 * be freshly added and ref cnted, we can free
+                                 * the old one.
+                                 *
+                                 * signal_valid can be false, as we are not
+                                 * expecting the BSS to be found.
+                                 *
+                                 * keep the old timestamp to avoid confusion
+                                 */
+                                cfg80211_bss_update(rdev, ibss, false,
+                                                    ibss->ts);
+                        }
+
+                        cfg80211_put_bss(wdev->wiphy, tmp);
+                }
+        }
+
+        ev = kzalloc(sizeof(*ev) + (params->bssid ? ETH_ALEN : 0) +
+                     params->req_ie_len + params->resp_ie_len +
+                     params->fils.kek_len + params->fils.pmk_len +
+                     (params->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
+        if (!ev) {
+                cfg80211_put_bss(wdev->wiphy, params->bss);
+                return;
+        }
+
+        ev->type = EVENT_CONNECT_RESULT;
+        next = ((u8 *)ev) + sizeof(*ev);
+        if (params->bssid) {
+                ev->cr.bssid = next;
+                memcpy((void *)ev->cr.bssid, params->bssid, ETH_ALEN);
+                next += ETH_ALEN;
+        }
+        if (params->req_ie_len) {
+                ev->cr.req_ie = next;
+                ev->cr.req_ie_len = params->req_ie_len;
+                memcpy((void *)ev->cr.req_ie, params->req_ie,
+                       params->req_ie_len);
+                next += params->req_ie_len;
+        }
+        if (params->resp_ie_len) {
+                ev->cr.resp_ie = next;
+                ev->cr.resp_ie_len = params->resp_ie_len;
+                memcpy((void *)ev->cr.resp_ie, params->resp_ie,
+                       params->resp_ie_len);
+                next += params->resp_ie_len;
+        }
+        if (params->fils.kek_len) {
+                ev->cr.fils.kek = next;
+                ev->cr.fils.kek_len = params->fils.kek_len;
+                memcpy((void *)ev->cr.fils.kek, params->fils.kek,
+                       params->fils.kek_len);
+                next += params->fils.kek_len;
+        }
+        if (params->fils.pmk_len) {
+                ev->cr.fils.pmk = next;
+                ev->cr.fils.pmk_len = params->fils.pmk_len;
+                memcpy((void *)ev->cr.fils.pmk, params->fils.pmk,
+                       params->fils.pmk_len);
+                next += params->fils.pmk_len;
+        }
+        if (params->fils.pmkid) {
+                ev->cr.fils.pmkid = next;
+                memcpy((void *)ev->cr.fils.pmkid, params->fils.pmkid,
+                       WLAN_PMKID_LEN);
+                next += WLAN_PMKID_LEN;
+        }
+        ev->cr.fils.update_erp_next_seq_num = params->fils.update_erp_next_seq_num;
+        if (params->fils.update_erp_next_seq_num)
+                ev->cr.fils.erp_next_seq_num = params->fils.erp_next_seq_num;
+        if (params->bss)
+                cfg80211_hold_bss(bss_from_pub(params->bss));
+        ev->cr.bss = params->bss;
+        ev->cr.status = params->status;
+        ev->cr.timeout_reason = params->timeout_reason;
+
+        spin_lock_irqsave(&wdev->event_lock, flags);
+        list_add_tail(&ev->list, &wdev->event_list);
+        spin_unlock_irqrestore(&wdev->event_lock, flags);
+        queue_work(cfg80211_wq, &rdev->event_work);
+}
+EXPORT_SYMBOL(cfg80211_connect_done);
+
+/* Consumes bss object one way or another */
+void __cfg80211_roamed(struct wireless_dev *wdev,
+                       struct cfg80211_roam_info *info)
+{
+#ifdef CONFIG_CFG80211_WEXT
+        union iwreq_data wrqu;
+#endif
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
+                    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
+                goto out;
+
+        if (WARN_ON(!wdev->current_bss))
+                goto out;
+
+        cfg80211_unhold_bss(wdev->current_bss);
+        cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+        wdev->current_bss = NULL;
+
+        if (WARN_ON(!info->bss))
+                return;
+
+        cfg80211_hold_bss(bss_from_pub(info->bss));
+        wdev->current_bss = bss_from_pub(info->bss);
+
+        wdev->unprot_beacon_reported = 0;
+        nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy),
+                            wdev->netdev, info, GFP_KERNEL);
+
+#ifdef CONFIG_CFG80211_WEXT
+        if (info->req_ie) {
+                memset(&wrqu, 0, sizeof(wrqu));
+                wrqu.data.length = info->req_ie_len;
+                wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
+                                    &wrqu, info->req_ie);
+        }
+
+        if (info->resp_ie) {
+                memset(&wrqu, 0, sizeof(wrqu));
+                wrqu.data.length = info->resp_ie_len;
+                wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
+                                    &wrqu, info->resp_ie);
+        }
+
+        memset(&wrqu, 0, sizeof(wrqu));
+        wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+        memcpy(wrqu.ap_addr.sa_data, info->bss->bssid, ETH_ALEN);
+        memcpy(wdev->wext.prev_bssid, info->bss->bssid, ETH_ALEN);
+        wdev->wext.prev_bssid_valid = true;
+        wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL);
+#endif
+
+        return;
+out:
+        cfg80211_put_bss(wdev->wiphy, info->bss);
+}
+
+/* Consumes info->bss object one way or another */
+void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info,
+                     gfp_t gfp)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        struct cfg80211_event *ev;
+        unsigned long flags;
+        u8 *next;
+
+        if (!info->bss) {
+                info->bss = cfg80211_get_bss(wdev->wiphy, info->channel,
+                                             info->bssid, wdev->ssid,
+                                             wdev->ssid_len,
+                                             wdev->conn_bss_type,
+                                             IEEE80211_PRIVACY_ANY);
+        }
+
+        if (WARN_ON(!info->bss))
+                return;
+
+        ev = kzalloc(sizeof(*ev) + info->req_ie_len + info->resp_ie_len +
+                     info->fils.kek_len + info->fils.pmk_len +
+                     (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
+        if (!ev) {
+                cfg80211_put_bss(wdev->wiphy, info->bss);
+                return;
+        }
+
+        ev->type = EVENT_ROAMED;
+        next = ((u8 *)ev) + sizeof(*ev);
+        if (info->req_ie_len) {
+                ev->rm.req_ie = next;
+                ev->rm.req_ie_len = info->req_ie_len;
+                memcpy((void *)ev->rm.req_ie, info->req_ie, info->req_ie_len);
+                next += info->req_ie_len;
+        }
+        if (info->resp_ie_len) {
+                ev->rm.resp_ie = next;
+                ev->rm.resp_ie_len = info->resp_ie_len;
+                memcpy((void *)ev->rm.resp_ie, info->resp_ie,
+                       info->resp_ie_len);
+                next += info->resp_ie_len;
+        }
+        if (info->fils.kek_len) {
+                ev->rm.fils.kek = next;
+                ev->rm.fils.kek_len = info->fils.kek_len;
+                memcpy((void *)ev->rm.fils.kek, info->fils.kek,
+                       info->fils.kek_len);
+                next += info->fils.kek_len;
+        }
+        if (info->fils.pmk_len) {
+                ev->rm.fils.pmk = next;
+                ev->rm.fils.pmk_len = info->fils.pmk_len;
+                memcpy((void *)ev->rm.fils.pmk, info->fils.pmk,
+                       info->fils.pmk_len);
+                next += info->fils.pmk_len;
+        }
+        if (info->fils.pmkid) {
+                ev->rm.fils.pmkid = next;
+                memcpy((void *)ev->rm.fils.pmkid, info->fils.pmkid,
+                       WLAN_PMKID_LEN);
+                next += WLAN_PMKID_LEN;
+        }
+        ev->rm.fils.update_erp_next_seq_num = info->fils.update_erp_next_seq_num;
+        if (info->fils.update_erp_next_seq_num)
+                ev->rm.fils.erp_next_seq_num = info->fils.erp_next_seq_num;
+        ev->rm.bss = info->bss;
+
+        spin_lock_irqsave(&wdev->event_lock, flags);
+        list_add_tail(&ev->list, &wdev->event_list);
+        spin_unlock_irqrestore(&wdev->event_lock, flags);
+        queue_work(cfg80211_wq, &rdev->event_work);
+}
+EXPORT_SYMBOL(cfg80211_roamed);
+
+void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *bssid)
+{
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+                return;
+
+        if (WARN_ON(!wdev->current_bss) ||
+            WARN_ON(!ether_addr_equal(wdev->current_bss->pub.bssid, bssid)))
+                return;
+
+        nl80211_send_port_authorized(wiphy_to_rdev(wdev->wiphy), wdev->netdev,
+                                     bssid);
+}
+
+void cfg80211_port_authorized(struct net_device *dev, const u8 *bssid,
+                              gfp_t gfp)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        struct cfg80211_event *ev;
+        unsigned long flags;
+
+        if (WARN_ON(!bssid))
+                return;
+
+        ev = kzalloc(sizeof(*ev), gfp);
+        if (!ev)
+                return;
+
+        ev->type = EVENT_PORT_AUTHORIZED;
+        memcpy(ev->pa.bssid, bssid, ETH_ALEN);
+
+        /*
+         * Use the wdev event list so that if there are pending
+         * connected/roamed events, they will be reported first.
+         */
+        spin_lock_irqsave(&wdev->event_lock, flags);
+        list_add_tail(&ev->list, &wdev->event_list);
+        spin_unlock_irqrestore(&wdev->event_lock, flags);
+        queue_work(cfg80211_wq, &rdev->event_work);
+}
+EXPORT_SYMBOL(cfg80211_port_authorized);
+
+void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
+                             size_t ie_len, u16 reason, bool from_ap)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        int i;
+#ifdef CONFIG_CFG80211_WEXT
+        union iwreq_data wrqu;
+#endif
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
+                    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
+                return;
+
+        if (wdev->current_bss) {
+                cfg80211_unhold_bss(wdev->current_bss);
+                cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
+        }
+
+        wdev->current_bss = NULL;
+        wdev->ssid_len = 0;
+        wdev->conn_owner_nlportid = 0;
+        kfree_sensitive(wdev->connect_keys);
+        wdev->connect_keys = NULL;
+
+        nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
+
+        /* stop critical protocol if supported */
+        if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) {
+                rdev->crit_proto_nlportid = 0;
+                rdev_crit_proto_stop(rdev, wdev);
+        }
+
+        /*
+         * Delete all the keys ... pairwise keys can't really
+         * exist any more anyway, but default keys might.
+         */
+        if (rdev->ops->del_key) {
+                int max_key_idx = 5;
+
+                if (wiphy_ext_feature_isset(
+                            wdev->wiphy,
+                            NL80211_EXT_FEATURE_BEACON_PROTECTION) ||
+                    wiphy_ext_feature_isset(
+                            wdev->wiphy,
+                            NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
+                        max_key_idx = 7;
+                for (i = 0; i <= max_key_idx; i++)
+                        rdev_del_key(rdev, dev, i, false, NULL);
+        }
+
+        rdev_set_qos_map(rdev, dev, NULL);
+
+#ifdef CONFIG_CFG80211_WEXT
+        memset(&wrqu, 0, sizeof(wrqu));
+        wrqu.ap_addr.sa_family = ARPHRD_ETHER;
+        wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
+        wdev->wext.connect.ssid_len = 0;
+#endif
+
+        schedule_work(&cfg80211_disconnect_work);
+}
+
+void cfg80211_disconnected(struct net_device *dev, u16 reason,
+                           const u8 *ie, size_t ie_len,
+                           bool locally_generated, gfp_t gfp)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+        struct cfg80211_event *ev;
+        unsigned long flags;
+
+        ev = kzalloc(sizeof(*ev) + ie_len, gfp);
+        if (!ev)
+                return;
+
+        ev->type = EVENT_DISCONNECTED;
+        ev->dc.ie = ((u8 *)ev) + sizeof(*ev);
+        ev->dc.ie_len = ie_len;
+        memcpy((void *)ev->dc.ie, ie, ie_len);
+        ev->dc.reason = reason;
+        ev->dc.locally_generated = locally_generated;
+
+        spin_lock_irqsave(&wdev->event_lock, flags);
+        list_add_tail(&ev->list, &wdev->event_list);
+        spin_unlock_irqrestore(&wdev->event_lock, flags);
+        queue_work(cfg80211_wq, &rdev->event_work);
+}
+EXPORT_SYMBOL(cfg80211_disconnected);
+
+/*
+ * API calls for nl80211/wext compatibility code
+ */
+int cfg80211_connect(struct cfg80211_registered_device *rdev,
+                     struct net_device *dev,
+                     struct cfg80211_connect_params *connect,
+                     struct cfg80211_cached_keys *connkeys,
+                     const u8 *prev_bssid)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        int err;
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        /*
+         * If we have an ssid_len, we're trying to connect or are
+         * already connected, so reject a new SSID unless it's the
+         * same (which is the case for re-association.)
+         */
+        if (wdev->ssid_len &&
+            (wdev->ssid_len != connect->ssid_len ||
+             memcmp(wdev->ssid, connect->ssid, wdev->ssid_len)))
+                return -EALREADY;
+
+        /*
+         * If connected, reject (re-)association unless prev_bssid
+         * matches the current BSSID.
+         */
+        if (wdev->current_bss) {
+                if (!prev_bssid)
+                        return -EALREADY;
+                if (!ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid))
+                        return -ENOTCONN;
+        }
+
+        /*
+         * Reject if we're in the process of connecting with WEP,
+         * this case isn't very interesting and trying to handle
+         * it would make the code much more complex.
+         */
+        if (wdev->connect_keys)
+                return -EINPROGRESS;
+
+        cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
+                                  rdev->wiphy.ht_capa_mod_mask);
+        cfg80211_oper_and_vht_capa(&connect->vht_capa_mask,
+                                   rdev->wiphy.vht_capa_mod_mask);
+
+        if (connkeys && connkeys->def >= 0) {
+                int idx;
+                u32 cipher;
+
+                idx = connkeys->def;
+                cipher = connkeys->params[idx].cipher;
+                /* If given a WEP key we may need it for shared key auth */
+                if (cipher == WLAN_CIPHER_SUITE_WEP40 ||
+                    cipher == WLAN_CIPHER_SUITE_WEP104) {
+                        connect->key_idx = idx;
+                        connect->key = connkeys->params[idx].key;
+                        connect->key_len = connkeys->params[idx].key_len;
+
+                        /*
+                         * If ciphers are not set (e.g. when going through
+                         * iwconfig), we have to set them appropriately here.
+                         */
+                        if (connect->crypto.cipher_group == 0)
+                                connect->crypto.cipher_group = cipher;
+
+                        if (connect->crypto.n_ciphers_pairwise == 0) {
+                                connect->crypto.n_ciphers_pairwise = 1;
+                                connect->crypto.ciphers_pairwise[0] = cipher;
+                        }
+                }
+
+                connect->crypto.wep_keys = connkeys->params;
+                connect->crypto.wep_tx_key = connkeys->def;
+        } else {
+                if (WARN_ON(connkeys))
+                        return -EINVAL;
+        }
+
+        wdev->connect_keys = connkeys;
+        memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
+        wdev->ssid_len = connect->ssid_len;
+
+        wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS :
+                                              IEEE80211_BSS_TYPE_ESS;
+
+        if (!rdev->ops->connect)
+                err = cfg80211_sme_connect(wdev, connect, prev_bssid);
+        else
+                err = rdev_connect(rdev, dev, connect);
+
+        if (err) {
+                wdev->connect_keys = NULL;
+                /*
+                 * This could be reassoc getting refused, don't clear
+                 * ssid_len in that case.
+                 */
+                if (!wdev->current_bss)
+                        wdev->ssid_len = 0;
+                return err;
+        }
+
+        return 0;
+}
+
+int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
+                        struct net_device *dev, u16 reason, bool wextev)
+{
+        struct wireless_dev *wdev = dev->ieee80211_ptr;
+        int err = 0;
+
+        ASSERT_WDEV_LOCK(wdev);
+
+        kfree_sensitive(wdev->connect_keys);
+        wdev->connect_keys = NULL;
+
+        wdev->conn_owner_nlportid = 0;
+
+        if (wdev->conn)
+                err = cfg80211_sme_disconnect(wdev, reason);
+        else if (!rdev->ops->disconnect)
+                cfg80211_mlme_down(rdev, dev);
+        else if (wdev->ssid_len)
+                err = rdev_disconnect(rdev, dev, reason);
+
+        /*
+         * Clear ssid_len unless we actually were fully connected,
+         * in which case cfg80211_disconnected() will take care of
+         * this later.
+         */
+        if (!wdev->current_bss)
+                wdev->ssid_len = 0;
+
+        return err;
+}
+
+/*
+ * Used to clean up after the connection / connection attempt owner socket
+ * disconnects
+ */
+void cfg80211_autodisconnect_wk(struct work_struct *work)
+{
+        struct wireless_dev *wdev =
+                container_of(work, struct wireless_dev, disconnect_wk);
+        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+
+        wdev_lock(wdev);
+
+        if (wdev->conn_owner_nlportid) {
+                switch (wdev->iftype) {
+                case NL80211_IFTYPE_ADHOC:
+                        __cfg80211_leave_ibss(rdev, wdev->netdev, false);
+                        break;
+                case NL80211_IFTYPE_AP:
+                case NL80211_IFTYPE_P2P_GO:
+                        __cfg80211_stop_ap(rdev, wdev->netdev, false);
+                        break;
+                case NL80211_IFTYPE_MESH_POINT:
+                        __cfg80211_leave_mesh(rdev, wdev->netdev);
+                        break;
+                case NL80211_IFTYPE_STATION:
+                case NL80211_IFTYPE_P2P_CLIENT:
+                        /*
+                         * Use disconnect_bssid if still connecting and
+                         * ops->disconnect not implemented.  Otherwise we can
+                         * use cfg80211_disconnect.
+                         */
+                        if (rdev->ops->disconnect || wdev->current_bss)
+                                cfg80211_disconnect(rdev, wdev->netdev,
+                                                    WLAN_REASON_DEAUTH_LEAVING,
+                                                    true);
+                        else
+                                cfg80211_mlme_deauth(rdev, wdev->netdev,
+                                                     wdev->disconnect_bssid,
+                                                     NULL, 0,
+                                                     WLAN_REASON_DEAUTH_LEAVING,
+                                                     false);
+                        break;
+                default:
+                        break;
+                }
+        }
+
+        wdev_unlock(wdev);
+}