1039 lines
27 KiB
C
1039 lines
27 KiB
C
/*
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* SME code for cfg80211's connect emulation.
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*
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* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
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* Copyright (C) 2009 Intel Corporation. All rights reserved.
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*/
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#include <linux/etherdevice.h>
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#include <linux/if_arp.h>
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#include <linux/slab.h>
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#include <linux/workqueue.h>
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#include <linux/wireless.h>
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#include <linux/export.h>
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#include <net/iw_handler.h>
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#include <net/cfg80211.h>
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#include <net/rtnetlink.h>
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#include "nl80211.h"
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#include "reg.h"
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#include "rdev-ops.h"
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struct cfg80211_conn {
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struct cfg80211_connect_params params;
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/* these are sub-states of the _CONNECTING sme_state */
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enum {
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CFG80211_CONN_IDLE,
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CFG80211_CONN_SCANNING,
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CFG80211_CONN_SCAN_AGAIN,
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CFG80211_CONN_AUTHENTICATE_NEXT,
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CFG80211_CONN_AUTHENTICATING,
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CFG80211_CONN_ASSOCIATE_NEXT,
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CFG80211_CONN_ASSOCIATING,
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CFG80211_CONN_DEAUTH_ASSOC_FAIL,
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} state;
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u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
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u8 *ie;
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size_t ie_len;
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bool auto_auth, prev_bssid_valid;
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};
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static bool cfg80211_is_all_idle(void)
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{
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struct cfg80211_registered_device *rdev;
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struct wireless_dev *wdev;
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bool is_all_idle = true;
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mutex_lock(&cfg80211_mutex);
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/*
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* All devices must be idle as otherwise if you are actively
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* scanning some new beacon hints could be learned and would
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* count as new regulatory hints.
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*/
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list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
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cfg80211_lock_rdev(rdev);
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list_for_each_entry(wdev, &rdev->wdev_list, list) {
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wdev_lock(wdev);
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if (wdev->sme_state != CFG80211_SME_IDLE)
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is_all_idle = false;
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wdev_unlock(wdev);
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}
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cfg80211_unlock_rdev(rdev);
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}
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mutex_unlock(&cfg80211_mutex);
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return is_all_idle;
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}
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static void disconnect_work(struct work_struct *work)
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{
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if (!cfg80211_is_all_idle())
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return;
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regulatory_hint_disconnect();
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}
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static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work);
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static int cfg80211_conn_scan(struct wireless_dev *wdev)
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{
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
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struct cfg80211_scan_request *request;
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int n_channels, err;
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ASSERT_RTNL();
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ASSERT_RDEV_LOCK(rdev);
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ASSERT_WDEV_LOCK(wdev);
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lockdep_assert_held(&rdev->sched_scan_mtx);
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if (rdev->scan_req)
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return -EBUSY;
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if (wdev->conn->params.channel) {
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n_channels = 1;
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} else {
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enum ieee80211_band band;
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n_channels = 0;
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for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
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if (!wdev->wiphy->bands[band])
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continue;
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n_channels += wdev->wiphy->bands[band]->n_channels;
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}
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}
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request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) +
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sizeof(request->channels[0]) * n_channels,
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GFP_KERNEL);
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if (!request)
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return -ENOMEM;
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if (wdev->conn->params.channel)
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request->channels[0] = wdev->conn->params.channel;
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else {
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int i = 0, j;
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enum ieee80211_band band;
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struct ieee80211_supported_band *bands;
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struct ieee80211_channel *channel;
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for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
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bands = wdev->wiphy->bands[band];
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if (!bands)
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continue;
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for (j = 0; j < bands->n_channels; j++) {
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channel = &bands->channels[j];
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if (channel->flags & IEEE80211_CHAN_DISABLED)
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continue;
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request->channels[i++] = channel;
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}
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request->rates[band] = (1 << bands->n_bitrates) - 1;
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}
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n_channels = i;
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}
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request->n_channels = n_channels;
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request->ssids = (void *)&request->channels[n_channels];
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request->n_ssids = 1;
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memcpy(request->ssids[0].ssid, wdev->conn->params.ssid,
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wdev->conn->params.ssid_len);
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request->ssids[0].ssid_len = wdev->conn->params.ssid_len;
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request->wdev = wdev;
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request->wiphy = &rdev->wiphy;
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request->scan_start = jiffies;
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rdev->scan_req = request;
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err = rdev_scan(rdev, request);
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if (!err) {
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wdev->conn->state = CFG80211_CONN_SCANNING;
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nl80211_send_scan_start(rdev, wdev);
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dev_hold(wdev->netdev);
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} else {
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rdev->scan_req = NULL;
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kfree(request);
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}
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return err;
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}
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static int cfg80211_conn_do_work(struct wireless_dev *wdev)
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{
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
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struct cfg80211_connect_params *params;
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struct cfg80211_assoc_request req = {};
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int err;
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ASSERT_WDEV_LOCK(wdev);
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if (!wdev->conn)
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return 0;
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params = &wdev->conn->params;
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switch (wdev->conn->state) {
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case CFG80211_CONN_SCAN_AGAIN:
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return cfg80211_conn_scan(wdev);
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case CFG80211_CONN_AUTHENTICATE_NEXT:
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BUG_ON(!rdev->ops->auth);
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wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
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return __cfg80211_mlme_auth(rdev, wdev->netdev,
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params->channel, params->auth_type,
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params->bssid,
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params->ssid, params->ssid_len,
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NULL, 0,
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params->key, params->key_len,
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params->key_idx, NULL, 0);
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case CFG80211_CONN_ASSOCIATE_NEXT:
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BUG_ON(!rdev->ops->assoc);
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wdev->conn->state = CFG80211_CONN_ASSOCIATING;
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if (wdev->conn->prev_bssid_valid)
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req.prev_bssid = wdev->conn->prev_bssid;
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req.ie = params->ie;
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req.ie_len = params->ie_len;
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req.use_mfp = params->mfp != NL80211_MFP_NO;
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req.crypto = params->crypto;
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req.flags = params->flags;
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req.ht_capa = params->ht_capa;
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req.ht_capa_mask = params->ht_capa_mask;
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req.vht_capa = params->vht_capa;
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req.vht_capa_mask = params->vht_capa_mask;
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err = __cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel,
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params->bssid, params->ssid,
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params->ssid_len, &req);
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if (err)
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__cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
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NULL, 0,
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WLAN_REASON_DEAUTH_LEAVING,
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false);
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return err;
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case CFG80211_CONN_DEAUTH_ASSOC_FAIL:
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__cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
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NULL, 0,
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WLAN_REASON_DEAUTH_LEAVING, false);
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/* return an error so that we call __cfg80211_connect_result() */
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return -EINVAL;
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default:
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return 0;
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}
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}
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void cfg80211_conn_work(struct work_struct *work)
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{
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struct cfg80211_registered_device *rdev =
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container_of(work, struct cfg80211_registered_device, conn_work);
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struct wireless_dev *wdev;
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u8 bssid_buf[ETH_ALEN], *bssid = NULL;
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rtnl_lock();
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cfg80211_lock_rdev(rdev);
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mutex_lock(&rdev->devlist_mtx);
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mutex_lock(&rdev->sched_scan_mtx);
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list_for_each_entry(wdev, &rdev->wdev_list, list) {
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wdev_lock(wdev);
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if (!netif_running(wdev->netdev)) {
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wdev_unlock(wdev);
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continue;
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}
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if (wdev->sme_state != CFG80211_SME_CONNECTING || !wdev->conn) {
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wdev_unlock(wdev);
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continue;
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}
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if (wdev->conn->params.bssid) {
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memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN);
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bssid = bssid_buf;
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}
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if (cfg80211_conn_do_work(wdev))
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__cfg80211_connect_result(
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wdev->netdev, bssid,
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NULL, 0, NULL, 0,
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WLAN_STATUS_UNSPECIFIED_FAILURE,
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false, NULL);
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wdev_unlock(wdev);
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}
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mutex_unlock(&rdev->sched_scan_mtx);
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mutex_unlock(&rdev->devlist_mtx);
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cfg80211_unlock_rdev(rdev);
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rtnl_unlock();
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}
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static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev)
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{
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
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struct cfg80211_bss *bss;
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u16 capa = WLAN_CAPABILITY_ESS;
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ASSERT_WDEV_LOCK(wdev);
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if (wdev->conn->params.privacy)
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capa |= WLAN_CAPABILITY_PRIVACY;
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bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel,
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wdev->conn->params.bssid,
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wdev->conn->params.ssid,
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wdev->conn->params.ssid_len,
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WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY,
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capa);
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if (!bss)
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return NULL;
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memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN);
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wdev->conn->params.bssid = wdev->conn->bssid;
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wdev->conn->params.channel = bss->channel;
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wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
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schedule_work(&rdev->conn_work);
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return bss;
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}
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static void __cfg80211_sme_scan_done(struct net_device *dev)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
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struct cfg80211_bss *bss;
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ASSERT_WDEV_LOCK(wdev);
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if (wdev->sme_state != CFG80211_SME_CONNECTING)
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return;
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if (!wdev->conn)
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return;
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if (wdev->conn->state != CFG80211_CONN_SCANNING &&
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wdev->conn->state != CFG80211_CONN_SCAN_AGAIN)
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return;
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bss = cfg80211_get_conn_bss(wdev);
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if (bss) {
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cfg80211_put_bss(&rdev->wiphy, bss);
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} else {
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/* not found */
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if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)
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schedule_work(&rdev->conn_work);
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else
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__cfg80211_connect_result(
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wdev->netdev,
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wdev->conn->params.bssid,
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NULL, 0, NULL, 0,
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WLAN_STATUS_UNSPECIFIED_FAILURE,
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false, NULL);
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}
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}
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void cfg80211_sme_scan_done(struct net_device *dev)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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wdev_lock(wdev);
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__cfg80211_sme_scan_done(dev);
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wdev_unlock(wdev);
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}
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void cfg80211_sme_rx_auth(struct net_device *dev,
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const u8 *buf, size_t len)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
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u16 status_code = le16_to_cpu(mgmt->u.auth.status_code);
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ASSERT_WDEV_LOCK(wdev);
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/* should only RX auth frames when connecting */
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if (wdev->sme_state != CFG80211_SME_CONNECTING)
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return;
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if (WARN_ON(!wdev->conn))
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return;
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if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
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wdev->conn->auto_auth &&
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wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) {
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/* select automatically between only open, shared, leap */
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switch (wdev->conn->params.auth_type) {
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case NL80211_AUTHTYPE_OPEN_SYSTEM:
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if (wdev->connect_keys)
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wdev->conn->params.auth_type =
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NL80211_AUTHTYPE_SHARED_KEY;
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else
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wdev->conn->params.auth_type =
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NL80211_AUTHTYPE_NETWORK_EAP;
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break;
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case NL80211_AUTHTYPE_SHARED_KEY:
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wdev->conn->params.auth_type =
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NL80211_AUTHTYPE_NETWORK_EAP;
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break;
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default:
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/* huh? */
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wdev->conn->params.auth_type =
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NL80211_AUTHTYPE_OPEN_SYSTEM;
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break;
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}
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wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
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schedule_work(&rdev->conn_work);
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} else if (status_code != WLAN_STATUS_SUCCESS) {
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__cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0,
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status_code, false, NULL);
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} else if (wdev->sme_state == CFG80211_SME_CONNECTING &&
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wdev->conn->state == CFG80211_CONN_AUTHENTICATING) {
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wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
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schedule_work(&rdev->conn_work);
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}
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}
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bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev)
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{
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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if (WARN_ON(!wdev->conn))
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return false;
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if (!wdev->conn->prev_bssid_valid)
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return false;
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/*
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* Some stupid APs don't accept reassoc, so we
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* need to fall back to trying regular assoc.
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*/
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wdev->conn->prev_bssid_valid = false;
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wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT;
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schedule_work(&rdev->conn_work);
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return true;
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}
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void cfg80211_sme_failed_assoc(struct wireless_dev *wdev)
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{
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struct wiphy *wiphy = wdev->wiphy;
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struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
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wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL;
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schedule_work(&rdev->conn_work);
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}
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void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
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const u8 *req_ie, size_t req_ie_len,
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const u8 *resp_ie, size_t resp_ie_len,
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u16 status, bool wextev,
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struct cfg80211_bss *bss)
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{
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struct wireless_dev *wdev = dev->ieee80211_ptr;
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const u8 *country_ie;
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#ifdef CONFIG_CFG80211_WEXT
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union iwreq_data wrqu;
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#endif
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ASSERT_WDEV_LOCK(wdev);
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if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
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wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
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return;
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if (wdev->sme_state != CFG80211_SME_CONNECTING)
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return;
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nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev,
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bssid, req_ie, req_ie_len,
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resp_ie, resp_ie_len,
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status, GFP_KERNEL);
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|
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#ifdef CONFIG_CFG80211_WEXT
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if (wextev) {
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if (req_ie && status == WLAN_STATUS_SUCCESS) {
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memset(&wrqu, 0, sizeof(wrqu));
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wrqu.data.length = req_ie_len;
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wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie);
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}
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|
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if (resp_ie && status == WLAN_STATUS_SUCCESS) {
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memset(&wrqu, 0, sizeof(wrqu));
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wrqu.data.length = resp_ie_len;
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wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie);
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}
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memset(&wrqu, 0, sizeof(wrqu));
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wrqu.ap_addr.sa_family = ARPHRD_ETHER;
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if (bssid && status == WLAN_STATUS_SUCCESS) {
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memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
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memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN);
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wdev->wext.prev_bssid_valid = true;
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}
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wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
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}
|
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#endif
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|
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if (wdev->current_bss) {
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cfg80211_unhold_bss(wdev->current_bss);
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cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
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wdev->current_bss = NULL;
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}
|
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|
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if (wdev->conn)
|
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wdev->conn->state = CFG80211_CONN_IDLE;
|
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|
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if (status != WLAN_STATUS_SUCCESS) {
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wdev->sme_state = CFG80211_SME_IDLE;
|
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if (wdev->conn)
|
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kfree(wdev->conn->ie);
|
|
kfree(wdev->conn);
|
|
wdev->conn = NULL;
|
|
kfree(wdev->connect_keys);
|
|
wdev->connect_keys = NULL;
|
|
wdev->ssid_len = 0;
|
|
cfg80211_put_bss(wdev->wiphy, bss);
|
|
return;
|
|
}
|
|
|
|
if (!bss)
|
|
bss = cfg80211_get_bss(wdev->wiphy,
|
|
wdev->conn ? wdev->conn->params.channel :
|
|
NULL,
|
|
bssid,
|
|
wdev->ssid, wdev->ssid_len,
|
|
WLAN_CAPABILITY_ESS,
|
|
WLAN_CAPABILITY_ESS);
|
|
|
|
if (WARN_ON(!bss))
|
|
return;
|
|
|
|
cfg80211_hold_bss(bss_from_pub(bss));
|
|
wdev->current_bss = bss_from_pub(bss);
|
|
|
|
wdev->sme_state = CFG80211_SME_CONNECTED;
|
|
cfg80211_upload_connect_keys(wdev);
|
|
|
|
rcu_read_lock();
|
|
country_ie = ieee80211_bss_get_ie(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_11d(wdev->wiphy, bss->channel->band,
|
|
country_ie + 2, country_ie[1]);
|
|
kfree(country_ie);
|
|
}
|
|
|
|
void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
|
|
const u8 *req_ie, size_t req_ie_len,
|
|
const u8 *resp_ie, size_t resp_ie_len,
|
|
u16 status, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
|
|
struct cfg80211_event *ev;
|
|
unsigned long flags;
|
|
|
|
CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING);
|
|
|
|
ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
|
|
if (!ev)
|
|
return;
|
|
|
|
ev->type = EVENT_CONNECT_RESULT;
|
|
if (bssid)
|
|
memcpy(ev->cr.bssid, bssid, ETH_ALEN);
|
|
if (req_ie_len) {
|
|
ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev);
|
|
ev->cr.req_ie_len = req_ie_len;
|
|
memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len);
|
|
}
|
|
if (resp_ie_len) {
|
|
ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
|
|
ev->cr.resp_ie_len = resp_ie_len;
|
|
memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
|
|
}
|
|
ev->cr.status = status;
|
|
|
|
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_result);
|
|
|
|
void __cfg80211_roamed(struct wireless_dev *wdev,
|
|
struct cfg80211_bss *bss,
|
|
const u8 *req_ie, size_t req_ie_len,
|
|
const u8 *resp_ie, size_t resp_ie_len)
|
|
{
|
|
#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 (wdev->sme_state != CFG80211_SME_CONNECTED)
|
|
goto out;
|
|
|
|
/* internal error -- how did we get to CONNECTED w/o BSS? */
|
|
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;
|
|
|
|
cfg80211_hold_bss(bss_from_pub(bss));
|
|
wdev->current_bss = bss_from_pub(bss);
|
|
|
|
nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bss->bssid,
|
|
req_ie, req_ie_len, resp_ie, resp_ie_len,
|
|
GFP_KERNEL);
|
|
|
|
#ifdef CONFIG_CFG80211_WEXT
|
|
if (req_ie) {
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.data.length = req_ie_len;
|
|
wireless_send_event(wdev->netdev, IWEVASSOCREQIE,
|
|
&wrqu, req_ie);
|
|
}
|
|
|
|
if (resp_ie) {
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.data.length = resp_ie_len;
|
|
wireless_send_event(wdev->netdev, IWEVASSOCRESPIE,
|
|
&wrqu, resp_ie);
|
|
}
|
|
|
|
memset(&wrqu, 0, sizeof(wrqu));
|
|
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
|
|
memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN);
|
|
memcpy(wdev->wext.prev_bssid, 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, bss);
|
|
}
|
|
|
|
void cfg80211_roamed(struct net_device *dev,
|
|
struct ieee80211_channel *channel,
|
|
const u8 *bssid,
|
|
const u8 *req_ie, size_t req_ie_len,
|
|
const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_bss *bss;
|
|
|
|
CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
|
|
|
|
bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid,
|
|
wdev->ssid_len, WLAN_CAPABILITY_ESS,
|
|
WLAN_CAPABILITY_ESS);
|
|
if (WARN_ON(!bss))
|
|
return;
|
|
|
|
cfg80211_roamed_bss(dev, bss, req_ie, req_ie_len, resp_ie,
|
|
resp_ie_len, gfp);
|
|
}
|
|
EXPORT_SYMBOL(cfg80211_roamed);
|
|
|
|
void cfg80211_roamed_bss(struct net_device *dev,
|
|
struct cfg80211_bss *bss, const u8 *req_ie,
|
|
size_t req_ie_len, const u8 *resp_ie,
|
|
size_t resp_ie_len, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
|
|
struct cfg80211_event *ev;
|
|
unsigned long flags;
|
|
|
|
CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
|
|
|
|
if (WARN_ON(!bss))
|
|
return;
|
|
|
|
ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
|
|
if (!ev) {
|
|
cfg80211_put_bss(wdev->wiphy, bss);
|
|
return;
|
|
}
|
|
|
|
ev->type = EVENT_ROAMED;
|
|
ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
|
|
ev->rm.req_ie_len = req_ie_len;
|
|
memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len);
|
|
ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len;
|
|
ev->rm.resp_ie_len = resp_ie_len;
|
|
memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len);
|
|
ev->rm.bss = 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_bss);
|
|
|
|
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_dev(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->sme_state != CFG80211_SME_CONNECTED)
|
|
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->sme_state = CFG80211_SME_IDLE;
|
|
wdev->ssid_len = 0;
|
|
|
|
if (wdev->conn) {
|
|
kfree(wdev->conn->ie);
|
|
wdev->conn->ie = NULL;
|
|
kfree(wdev->conn);
|
|
wdev->conn = NULL;
|
|
}
|
|
|
|
nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap);
|
|
|
|
/*
|
|
* Delete all the keys ... pairwise keys can't really
|
|
* exist any more anyway, but default keys might.
|
|
*/
|
|
if (rdev->ops->del_key)
|
|
for (i = 0; i < 6; i++)
|
|
rdev_del_key(rdev, dev, i, false, 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,
|
|
u8 *ie, size_t ie_len, gfp_t gfp)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
|
|
struct cfg80211_event *ev;
|
|
unsigned long flags;
|
|
|
|
CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED);
|
|
|
|
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;
|
|
|
|
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);
|
|
|
|
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;
|
|
struct cfg80211_bss *bss = NULL;
|
|
int err;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (wdev->sme_state != CFG80211_SME_IDLE)
|
|
return -EALREADY;
|
|
|
|
if (WARN_ON(wdev->connect_keys)) {
|
|
kfree(wdev->connect_keys);
|
|
wdev->connect_keys = NULL;
|
|
}
|
|
|
|
cfg80211_oper_and_ht_capa(&connect->ht_capa_mask,
|
|
rdev->wiphy.ht_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;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!rdev->ops->connect) {
|
|
if (!rdev->ops->auth || !rdev->ops->assoc)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (WARN_ON(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 (connect->ie) {
|
|
wdev->conn->ie = kmemdup(connect->ie, connect->ie_len,
|
|
GFP_KERNEL);
|
|
wdev->conn->params.ie = wdev->conn->ie;
|
|
if (!wdev->conn->ie) {
|
|
kfree(wdev->conn);
|
|
wdev->conn = NULL;
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
|
|
wdev->ssid_len = connect->ssid_len;
|
|
wdev->conn->params.ssid = wdev->ssid;
|
|
wdev->conn->params.ssid_len = connect->ssid_len;
|
|
|
|
/* see if we have the bss already */
|
|
bss = cfg80211_get_conn_bss(wdev);
|
|
|
|
wdev->sme_state = CFG80211_SME_CONNECTING;
|
|
wdev->connect_keys = connkeys;
|
|
|
|
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) {
|
|
wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT;
|
|
err = cfg80211_conn_do_work(wdev);
|
|
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) {
|
|
kfree(wdev->conn->ie);
|
|
kfree(wdev->conn);
|
|
wdev->conn = NULL;
|
|
wdev->sme_state = CFG80211_SME_IDLE;
|
|
wdev->connect_keys = NULL;
|
|
wdev->ssid_len = 0;
|
|
}
|
|
|
|
return err;
|
|
} else {
|
|
wdev->sme_state = CFG80211_SME_CONNECTING;
|
|
wdev->connect_keys = connkeys;
|
|
err = rdev_connect(rdev, dev, connect);
|
|
if (err) {
|
|
wdev->connect_keys = NULL;
|
|
wdev->sme_state = CFG80211_SME_IDLE;
|
|
return err;
|
|
}
|
|
|
|
memcpy(wdev->ssid, connect->ssid, connect->ssid_len);
|
|
wdev->ssid_len = connect->ssid_len;
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int cfg80211_connect(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
struct cfg80211_connect_params *connect,
|
|
struct cfg80211_cached_keys *connkeys)
|
|
{
|
|
int err;
|
|
|
|
mutex_lock(&rdev->devlist_mtx);
|
|
/* might request scan - scan_mtx -> wdev_mtx dependency */
|
|
mutex_lock(&rdev->sched_scan_mtx);
|
|
wdev_lock(dev->ieee80211_ptr);
|
|
err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL);
|
|
wdev_unlock(dev->ieee80211_ptr);
|
|
mutex_unlock(&rdev->sched_scan_mtx);
|
|
mutex_unlock(&rdev->devlist_mtx);
|
|
|
|
return err;
|
|
}
|
|
|
|
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;
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (wdev->sme_state == CFG80211_SME_IDLE)
|
|
return -EINVAL;
|
|
|
|
kfree(wdev->connect_keys);
|
|
wdev->connect_keys = NULL;
|
|
|
|
if (!rdev->ops->disconnect) {
|
|
if (!rdev->ops->deauth)
|
|
return -EOPNOTSUPP;
|
|
|
|
/* was it connected by userspace SME? */
|
|
if (!wdev->conn) {
|
|
cfg80211_mlme_down(rdev, dev);
|
|
goto disconnect;
|
|
}
|
|
|
|
if (wdev->sme_state == CFG80211_SME_CONNECTING &&
|
|
(wdev->conn->state == CFG80211_CONN_SCANNING ||
|
|
wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) {
|
|
wdev->sme_state = CFG80211_SME_IDLE;
|
|
kfree(wdev->conn->ie);
|
|
kfree(wdev->conn);
|
|
wdev->conn = NULL;
|
|
wdev->ssid_len = 0;
|
|
return 0;
|
|
}
|
|
|
|
/* wdev->conn->params.bssid must be set if > SCANNING */
|
|
err = __cfg80211_mlme_deauth(rdev, dev,
|
|
wdev->conn->params.bssid,
|
|
NULL, 0, reason, false);
|
|
if (err)
|
|
return err;
|
|
} else {
|
|
err = rdev_disconnect(rdev, dev, reason);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
disconnect:
|
|
if (wdev->sme_state == CFG80211_SME_CONNECTED)
|
|
__cfg80211_disconnected(dev, NULL, 0, 0, false);
|
|
else if (wdev->sme_state == CFG80211_SME_CONNECTING)
|
|
__cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0,
|
|
WLAN_STATUS_UNSPECIFIED_FAILURE,
|
|
wextev, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
|
|
struct net_device *dev,
|
|
u16 reason, bool wextev)
|
|
{
|
|
int err;
|
|
|
|
wdev_lock(dev->ieee80211_ptr);
|
|
err = __cfg80211_disconnect(rdev, dev, reason, wextev);
|
|
wdev_unlock(dev->ieee80211_ptr);
|
|
|
|
return err;
|
|
}
|
|
|
|
void cfg80211_sme_disassoc(struct net_device *dev,
|
|
struct cfg80211_internal_bss *bss)
|
|
{
|
|
struct wireless_dev *wdev = dev->ieee80211_ptr;
|
|
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
|
|
u8 bssid[ETH_ALEN];
|
|
|
|
ASSERT_WDEV_LOCK(wdev);
|
|
|
|
if (!wdev->conn)
|
|
return;
|
|
|
|
if (wdev->conn->state == CFG80211_CONN_IDLE)
|
|
return;
|
|
|
|
/*
|
|
* Ok, so the association was made by this SME -- we don't
|
|
* want it any more so deauthenticate too.
|
|
*/
|
|
|
|
memcpy(bssid, bss->pub.bssid, ETH_ALEN);
|
|
|
|
__cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0,
|
|
WLAN_REASON_DEAUTH_LEAVING, false);
|
|
}
|