net/wireless/ap.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Parts of this file are
   4  * Copyright (C) 2022 Intel Corporation
   5  */
   6 #include <linux/ieee80211.h>
   7 #include <linux/export.h>
   8 #include <net/cfg80211.h>
   9 #include "nl80211.h"
  10 #include "core.h"
  11 #include "rdev-ops.h"
  12
  13
  14 static int ___cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
  15                                struct net_device *dev, unsigned int link_id,
  16                                bool notify)
  17 {
  18         struct wireless_dev *wdev = dev->ieee80211_ptr;
  19         int err;
  20
  21         ASSERT_WDEV_LOCK(wdev);
  22
  23         if (!rdev->ops->stop_ap)
  24                 return -EOPNOTSUPP;
  25
  26         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
  27             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
  28                 return -EOPNOTSUPP;
  29
  30         if (!wdev->links[link_id].ap.beacon_interval)
  31                 return -ENOENT;
  32
  33         err = rdev_stop_ap(rdev, dev, link_id);
  34         if (!err) {
  35                 wdev->conn_owner_nlportid = 0;
  36                 wdev->links[link_id].ap.beacon_interval = 0;
  37                 memset(&wdev->links[link_id].ap.chandef, 0,
  38                        sizeof(wdev->links[link_id].ap.chandef));
  39                 wdev->u.ap.ssid_len = 0;
  40                 rdev_set_qos_map(rdev, dev, NULL);
  41                 if (notify)
  42                         nl80211_send_ap_stopped(wdev);
  43
  44                 /* Should we apply the grace period during beaconing interface
  45                  * shutdown also?
  46                  */
  47                 cfg80211_sched_dfs_chan_update(rdev);
  48         }
  49
  50         schedule_work(&cfg80211_disconnect_work);
  51
  52         return err;
  53 }
  54
  55 int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
  56                        struct net_device *dev, int link_id,
  57                        bool notify)
  58 {
  59         unsigned int link;
  60         int ret = 0;
  61
  62         if (link_id >= 0)
  63                 return ___cfg80211_stop_ap(rdev, dev, link_id, notify);
  64
  65         for_each_valid_link(dev->ieee80211_ptr, link) {
  66                 int ret1 = ___cfg80211_stop_ap(rdev, dev, link, notify);
  67
  68                 if (ret1)
  69                         ret = ret1;
  70                 /* try the next one also if one errored */
  71         }
  72
  73         return ret;
  74 }
  75
  76 int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
  77                      struct net_device *dev, int link_id,
  78                      bool notify)
  79 {
  80         struct wireless_dev *wdev = dev->ieee80211_ptr;
  81         int err;
  82
  83         wdev_lock(wdev);
  84         err = __cfg80211_stop_ap(rdev, dev, link_id, notify);
  85         wdev_unlock(wdev);
  86
  87         return err;
  88 }