![Simon Wunderlich](/assets/img/avatar_default.png)
Add command to trigger radar detection in the driver/FW. Once radar detection is started it should continuously monitor for radars as long as the channel active. If radar is detected usermode notified with 'radar detected' event. Scanning and remain on channel functionality must be disabled while doing radar detection/scanning, and vice versa. Based on original patch by Victor Goldenshtein <victorg@ti.com> Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
243 lines
5.9 KiB
C
243 lines
5.9 KiB
C
#include <net/mac80211.h>
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#include <net/rtnetlink.h>
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#include "ieee80211_i.h"
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#include "mesh.h"
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#include "driver-ops.h"
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#include "led.h"
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/* return value indicates whether the driver should be further notified */
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static void ieee80211_quiesce(struct ieee80211_sub_if_data *sdata)
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{
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switch (sdata->vif.type) {
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case NL80211_IFTYPE_STATION:
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ieee80211_sta_quiesce(sdata);
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break;
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case NL80211_IFTYPE_ADHOC:
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ieee80211_ibss_quiesce(sdata);
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break;
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case NL80211_IFTYPE_MESH_POINT:
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ieee80211_mesh_quiesce(sdata);
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break;
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default:
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break;
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}
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cancel_work_sync(&sdata->work);
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}
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int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct ieee80211_sub_if_data *sdata;
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struct sta_info *sta;
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struct ieee80211_chanctx *ctx;
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if (!local->open_count)
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goto suspend;
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ieee80211_scan_cancel(local);
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ieee80211_dfs_cac_cancel(local);
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if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
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mutex_lock(&local->sta_mtx);
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list_for_each_entry(sta, &local->sta_list, list) {
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set_sta_flag(sta, WLAN_STA_BLOCK_BA);
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ieee80211_sta_tear_down_BA_sessions(
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sta, AGG_STOP_LOCAL_REQUEST);
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}
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mutex_unlock(&local->sta_mtx);
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}
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ieee80211_stop_queues_by_reason(hw,
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IEEE80211_QUEUE_STOP_REASON_SUSPEND);
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/* flush out all packets */
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synchronize_net();
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drv_flush(local, false);
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local->quiescing = true;
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/* make quiescing visible to timers everywhere */
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mb();
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flush_workqueue(local->workqueue);
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/* Don't try to run timers while suspended. */
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del_timer_sync(&local->sta_cleanup);
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/*
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* Note that this particular timer doesn't need to be
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* restarted at resume.
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*/
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cancel_work_sync(&local->dynamic_ps_enable_work);
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del_timer_sync(&local->dynamic_ps_timer);
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local->wowlan = wowlan && local->open_count;
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if (local->wowlan) {
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int err = drv_suspend(local, wowlan);
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if (err < 0) {
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local->quiescing = false;
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local->wowlan = false;
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if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
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mutex_lock(&local->sta_mtx);
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list_for_each_entry(sta,
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&local->sta_list, list) {
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clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
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}
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mutex_unlock(&local->sta_mtx);
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}
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ieee80211_wake_queues_by_reason(hw,
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IEEE80211_QUEUE_STOP_REASON_SUSPEND);
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return err;
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} else if (err > 0) {
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WARN_ON(err != 1);
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local->wowlan = false;
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} else {
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list_for_each_entry(sdata, &local->interfaces, list)
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if (ieee80211_sdata_running(sdata))
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ieee80211_quiesce(sdata);
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goto suspend;
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}
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}
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/* disable keys */
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list_for_each_entry(sdata, &local->interfaces, list)
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ieee80211_disable_keys(sdata);
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/* tear down aggregation sessions and remove STAs */
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mutex_lock(&local->sta_mtx);
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list_for_each_entry(sta, &local->sta_list, list) {
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if (sta->uploaded) {
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enum ieee80211_sta_state state;
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state = sta->sta_state;
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for (; state > IEEE80211_STA_NOTEXIST; state--)
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WARN_ON(drv_sta_state(local, sta->sdata, sta,
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state, state - 1));
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}
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mesh_plink_quiesce(sta);
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}
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mutex_unlock(&local->sta_mtx);
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/* remove all interfaces */
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list_for_each_entry(sdata, &local->interfaces, list) {
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static u8 zero_addr[ETH_ALEN] = {};
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u32 changed = 0;
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if (!ieee80211_sdata_running(sdata))
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continue;
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switch (sdata->vif.type) {
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case NL80211_IFTYPE_AP_VLAN:
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case NL80211_IFTYPE_MONITOR:
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/* skip these */
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continue;
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case NL80211_IFTYPE_STATION:
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if (sdata->vif.bss_conf.assoc)
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changed = BSS_CHANGED_ASSOC |
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BSS_CHANGED_BSSID |
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BSS_CHANGED_IDLE;
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break;
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case NL80211_IFTYPE_AP:
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case NL80211_IFTYPE_ADHOC:
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case NL80211_IFTYPE_MESH_POINT:
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if (sdata->vif.bss_conf.enable_beacon)
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changed = BSS_CHANGED_BEACON_ENABLED;
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break;
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default:
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break;
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}
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ieee80211_quiesce(sdata);
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sdata->suspend_bss_conf = sdata->vif.bss_conf;
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memset(&sdata->vif.bss_conf, 0, sizeof(sdata->vif.bss_conf));
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sdata->vif.bss_conf.idle = true;
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if (sdata->suspend_bss_conf.bssid)
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sdata->vif.bss_conf.bssid = zero_addr;
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/* disable beaconing or remove association */
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ieee80211_bss_info_change_notify(sdata, changed);
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if (sdata->vif.type == NL80211_IFTYPE_AP &&
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rcu_access_pointer(sdata->u.ap.beacon))
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drv_stop_ap(local, sdata);
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if (local->use_chanctx) {
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struct ieee80211_chanctx_conf *conf;
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mutex_lock(&local->chanctx_mtx);
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conf = rcu_dereference_protected(
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sdata->vif.chanctx_conf,
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lockdep_is_held(&local->chanctx_mtx));
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if (conf) {
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ctx = container_of(conf,
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struct ieee80211_chanctx,
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conf);
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drv_unassign_vif_chanctx(local, sdata, ctx);
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}
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mutex_unlock(&local->chanctx_mtx);
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}
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drv_remove_interface(local, sdata);
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}
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sdata = rtnl_dereference(local->monitor_sdata);
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if (sdata) {
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if (local->use_chanctx) {
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struct ieee80211_chanctx_conf *conf;
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mutex_lock(&local->chanctx_mtx);
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conf = rcu_dereference_protected(
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sdata->vif.chanctx_conf,
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lockdep_is_held(&local->chanctx_mtx));
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if (conf) {
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ctx = container_of(conf,
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struct ieee80211_chanctx,
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conf);
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drv_unassign_vif_chanctx(local, sdata, ctx);
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}
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mutex_unlock(&local->chanctx_mtx);
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}
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drv_remove_interface(local, sdata);
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}
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mutex_lock(&local->chanctx_mtx);
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list_for_each_entry(ctx, &local->chanctx_list, list)
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drv_remove_chanctx(local, ctx);
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mutex_unlock(&local->chanctx_mtx);
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/* stop hardware - this must stop RX */
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if (local->open_count)
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ieee80211_stop_device(local);
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suspend:
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local->suspended = true;
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/* need suspended to be visible before quiescing is false */
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barrier();
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local->quiescing = false;
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return 0;
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}
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/*
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* __ieee80211_resume() is a static inline which just calls
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* ieee80211_reconfig(), which is also needed for hardware
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* hang/firmware failure/etc. recovery.
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*/
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void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif,
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struct cfg80211_wowlan_wakeup *wakeup,
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gfp_t gfp)
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{
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struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
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cfg80211_report_wowlan_wakeup(&sdata->wdev, wakeup, gfp);
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}
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EXPORT_SYMBOL(ieee80211_report_wowlan_wakeup);
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