const int beacon_int, const u32 basic_rates,
const u16 capability, u64 tsf,
struct cfg80211_chan_def *chandef,
- bool *have_higher_than_11mbit)
+ bool *have_higher_than_11mbit,
+ struct cfg80211_csa_settings *csa_settings)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_local *local = sdata->local;
2 + 8 /* max Supported Rates */ +
3 /* max DS params */ +
4 /* IBSS params */ +
+ 5 /* Channel Switch Announcement */ +
2 + (IEEE80211_MAX_SUPP_RATES - 8) +
2 + sizeof(struct ieee80211_ht_cap) +
2 + sizeof(struct ieee80211_ht_operation) +
*pos++ = 0;
*pos++ = 0;
+ if (csa_settings) {
+ *pos++ = WLAN_EID_CHANNEL_SWITCH;
+ *pos++ = 3;
+ *pos++ = csa_settings->block_tx ? 1 : 0;
+ *pos++ = ieee80211_frequency_to_channel(
+ csa_settings->chandef.chan->center_freq);
+ sdata->csa_counter_offset_beacon = (pos - presp->head);
+ *pos++ = csa_settings->count;
+ }
+
/* put the remaining rates in WLAN_EID_EXT_SUPP_RATES */
if (rates_n > 8) {
*pos++ = WLAN_EID_EXT_SUPP_RATES;
struct beacon_data *presp;
enum nl80211_bss_scan_width scan_width;
bool have_higher_than_11mbit;
+ bool radar_required = false;
+ int err;
sdata_assert_lock(sdata);
ieee80211_bss_info_change_notify(sdata,
BSS_CHANGED_IBSS |
BSS_CHANGED_BEACON_ENABLED);
+ drv_leave_ibss(local, sdata);
}
presp = rcu_dereference_protected(ifibss->presp,
}
chandef.width = NL80211_CHAN_WIDTH_20;
chandef.center_freq1 = chan->center_freq;
+ /* check again for downgraded chandef */
+ if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef)) {
+ sdata_info(sdata,
+ "Failed to join IBSS, beacons forbidden\n");
+ return;
+ }
+ }
+
+ err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy,
+ &chandef);
+ if (err > 0) {
+ if (!ifibss->userspace_handles_dfs) {
+ sdata_info(sdata,
+ "Failed to join IBSS, DFS channel without control program\n");
+ return;
+ }
+ radar_required = true;
}
ieee80211_vif_release_channel(sdata);
presp = ieee80211_ibss_build_presp(sdata, beacon_int, basic_rates,
capability, tsf, &chandef,
- &have_higher_than_11mbit);
+ &have_higher_than_11mbit, NULL);
if (!presp)
return;
rcu_assign_pointer(ifibss->presp, presp);
mgmt = (void *)presp->head;
+ sdata->radar_required = radar_required;
sdata->vif.bss_conf.enable_beacon = true;
sdata->vif.bss_conf.beacon_int = beacon_int;
sdata->vif.bss_conf.basic_rates = basic_rates;
else
sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
+ ieee80211_set_wmm_default(sdata, true);
+
sdata->vif.bss_conf.ibss_joined = true;
sdata->vif.bss_conf.ibss_creator = creator;
- ieee80211_bss_info_change_notify(sdata, bss_change);
- ieee80211_set_wmm_default(sdata, true);
+ err = drv_join_ibss(local, sdata);
+ if (err) {
+ sdata->vif.bss_conf.ibss_joined = false;
+ sdata->vif.bss_conf.ibss_creator = false;
+ sdata->vif.bss_conf.enable_beacon = false;
+ sdata->vif.bss_conf.ssid_len = 0;
+ RCU_INIT_POINTER(ifibss->presp, NULL);
+ kfree_rcu(presp, rcu_head);
+ ieee80211_vif_release_channel(sdata);
+ sdata_info(sdata, "Failed to join IBSS, driver failure: %d\n",
+ err);
+ return;
+ }
+
+ ieee80211_bss_info_change_notify(sdata, bss_change);
ifibss->state = IEEE80211_IBSS_MLME_JOINED;
mod_timer(&ifibss->timer,
tsf, false);
}
+int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_csa_settings *csa_settings)
+{
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+ struct beacon_data *presp, *old_presp;
+ struct cfg80211_bss *cbss;
+ const struct cfg80211_bss_ies *ies;
+ u16 capability;
+ u64 tsf;
+ int ret = 0;
+
+ sdata_assert_lock(sdata);
+
+ capability = WLAN_CAPABILITY_IBSS;
+
+ if (ifibss->privacy)
+ capability |= WLAN_CAPABILITY_PRIVACY;
+
+ cbss = cfg80211_get_bss(sdata->local->hw.wiphy, ifibss->chandef.chan,
+ ifibss->bssid, ifibss->ssid,
+ ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
+ WLAN_CAPABILITY_PRIVACY,
+ capability);
+
+ if (WARN_ON(!cbss)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ rcu_read_lock();
+ ies = rcu_dereference(cbss->ies);
+ tsf = ies->tsf;
+ rcu_read_unlock();
+ cfg80211_put_bss(sdata->local->hw.wiphy, cbss);
+
+ old_presp = rcu_dereference_protected(ifibss->presp,
+ lockdep_is_held(&sdata->wdev.mtx));
+
+ presp = ieee80211_ibss_build_presp(sdata,
+ sdata->vif.bss_conf.beacon_int,
+ sdata->vif.bss_conf.basic_rates,
+ capability, tsf, &ifibss->chandef,
+ NULL, csa_settings);
+ if (!presp) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ rcu_assign_pointer(ifibss->presp, presp);
+ if (old_presp)
+ kfree_rcu(old_presp, rcu_head);
+
+ /* it might not send the beacon for a while. send an action frame
+ * immediately to announce the channel switch.
+ */
+ if (csa_settings)
+ ieee80211_send_action_csa(sdata, csa_settings);
+
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
+ out:
+ return ret;
+}
+
+int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+ struct cfg80211_bss *cbss;
+ int err;
+ u16 capability;
+
+ sdata_assert_lock(sdata);
+
+ /* update cfg80211 bss information with the new channel */
+ if (!is_zero_ether_addr(ifibss->bssid)) {
+ capability = WLAN_CAPABILITY_IBSS;
+
+ if (ifibss->privacy)
+ capability |= WLAN_CAPABILITY_PRIVACY;
+
+ cbss = cfg80211_get_bss(sdata->local->hw.wiphy,
+ ifibss->chandef.chan,
+ ifibss->bssid, ifibss->ssid,
+ ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
+ WLAN_CAPABILITY_PRIVACY,
+ capability);
+ /* XXX: should not really modify cfg80211 data */
+ if (cbss) {
+ cbss->channel = sdata->csa_chandef.chan;
+ cfg80211_put_bss(sdata->local->hw.wiphy, cbss);
+ }
+ }
+
+ ifibss->chandef = sdata->csa_chandef;
+
+ /* generate the beacon */
+ err = ieee80211_ibss_csa_beacon(sdata, NULL);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+
+ cancel_work_sync(&ifibss->csa_connection_drop_work);
+}
+
static struct sta_info *ieee80211_ibss_finish_sta(struct sta_info *sta)
__acquires(RCU)
{
return ieee80211_ibss_finish_sta(sta);
}
+static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ int active = 0;
+ struct sta_info *sta;
+
+ sdata_assert_lock(sdata);
+
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ if (sta->sdata == sdata &&
+ time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
+ jiffies)) {
+ active++;
+ break;
+ }
+ }
+
+ rcu_read_unlock();
+
+ return active;
+}
+
+static void ieee80211_ibss_disconnect(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+ struct ieee80211_local *local = sdata->local;
+ struct cfg80211_bss *cbss;
+ struct beacon_data *presp;
+ struct sta_info *sta;
+ int active_ibss;
+ u16 capability;
+
+ active_ibss = ieee80211_sta_active_ibss(sdata);
+
+ if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) {
+ capability = WLAN_CAPABILITY_IBSS;
+
+ if (ifibss->privacy)
+ capability |= WLAN_CAPABILITY_PRIVACY;
+
+ cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->chandef.chan,
+ ifibss->bssid, ifibss->ssid,
+ ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
+ WLAN_CAPABILITY_PRIVACY,
+ capability);
+
+ if (cbss) {
+ cfg80211_unlink_bss(local->hw.wiphy, cbss);
+ cfg80211_put_bss(sdata->local->hw.wiphy, cbss);
+ }
+ }
+
+ ifibss->state = IEEE80211_IBSS_MLME_SEARCH;
+
+ sta_info_flush(sdata);
+
+ spin_lock_bh(&ifibss->incomplete_lock);
+ while (!list_empty(&ifibss->incomplete_stations)) {
+ sta = list_first_entry(&ifibss->incomplete_stations,
+ struct sta_info, list);
+ list_del(&sta->list);
+ spin_unlock_bh(&ifibss->incomplete_lock);
+
+ sta_info_free(local, sta);
+ spin_lock_bh(&ifibss->incomplete_lock);
+ }
+ spin_unlock_bh(&ifibss->incomplete_lock);
+
+ netif_carrier_off(sdata->dev);
+
+ sdata->vif.bss_conf.ibss_joined = false;
+ sdata->vif.bss_conf.ibss_creator = false;
+ sdata->vif.bss_conf.enable_beacon = false;
+ sdata->vif.bss_conf.ssid_len = 0;
+
+ /* remove beacon */
+ presp = rcu_dereference_protected(ifibss->presp,
+ lockdep_is_held(&sdata->wdev.mtx));
+ RCU_INIT_POINTER(sdata->u.ibss.presp, NULL);
+ if (presp)
+ kfree_rcu(presp, rcu_head);
+
+ clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
+ BSS_CHANGED_IBSS);
+ drv_leave_ibss(local, sdata);
+ ieee80211_vif_release_channel(sdata);
+}
+
+static void ieee80211_csa_connection_drop_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data,
+ u.ibss.csa_connection_drop_work);
+
+ ieee80211_ibss_disconnect(sdata);
+ synchronize_rcu();
+ skb_queue_purge(&sdata->skb_queue);
+
+ /* trigger a scan to find another IBSS network to join */
+ ieee80211_queue_work(&sdata->local->hw, &sdata->work);
+}
+
+static void ieee80211_ibss_csa_mark_radar(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+ int err;
+
+ /* if the current channel is a DFS channel, mark the channel as
+ * unavailable.
+ */
+ err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy,
+ &ifibss->chandef);
+ if (err > 0)
+ cfg80211_radar_event(sdata->local->hw.wiphy, &ifibss->chandef,
+ GFP_ATOMIC);
+}
+
+static bool
+ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata,
+ struct ieee802_11_elems *elems,
+ bool beacon)
+{
+ struct cfg80211_csa_settings params;
+ struct ieee80211_csa_ie csa_ie;
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+ struct ieee80211_chanctx_conf *chanctx_conf;
+ struct ieee80211_chanctx *chanctx;
+ enum nl80211_channel_type ch_type;
+ int err, num_chanctx;
+ u32 sta_flags;
+
+ if (sdata->vif.csa_active)
+ return true;
+
+ if (!sdata->vif.bss_conf.ibss_joined)
+ return false;
+
+ sta_flags = IEEE80211_STA_DISABLE_VHT;
+ switch (ifibss->chandef.width) {
+ case NL80211_CHAN_WIDTH_5:
+ case NL80211_CHAN_WIDTH_10:
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ sta_flags |= IEEE80211_STA_DISABLE_HT;
+ /* fall through */
+ case NL80211_CHAN_WIDTH_20:
+ sta_flags |= IEEE80211_STA_DISABLE_40MHZ;
+ break;
+ default:
+ break;
+ }
+
+ memset(¶ms, 0, sizeof(params));
+ memset(&csa_ie, 0, sizeof(csa_ie));
+ err = ieee80211_parse_ch_switch_ie(sdata, elems, beacon,
+ ifibss->chandef.chan->band,
+ sta_flags, ifibss->bssid, &csa_ie);
+ /* can't switch to destination channel, fail */
+ if (err < 0)
+ goto disconnect;
+
+ /* did not contain a CSA */
+ if (err)
+ return false;
+
+ /* channel switch is not supported, disconnect */
+ if (!(sdata->local->hw.wiphy->flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
+ goto disconnect;
+
+ params.count = csa_ie.count;
+ params.chandef = csa_ie.chandef;
+
+ if (ifibss->chandef.chan->band != params.chandef.chan->band)
+ goto disconnect;
+
+ switch (ifibss->chandef.width) {
+ case NL80211_CHAN_WIDTH_20_NOHT:
+ case NL80211_CHAN_WIDTH_20:
+ case NL80211_CHAN_WIDTH_40:
+ /* keep our current HT mode (HT20/HT40+/HT40-), even if
+ * another mode has been announced. The mode is not adopted
+ * within the beacon while doing CSA and we should therefore
+ * keep the mode which we announce.
+ */
+ ch_type = cfg80211_get_chandef_type(&ifibss->chandef);
+ cfg80211_chandef_create(¶ms.chandef, params.chandef.chan,
+ ch_type);
+ break;
+ case NL80211_CHAN_WIDTH_5:
+ case NL80211_CHAN_WIDTH_10:
+ if (params.chandef.width != ifibss->chandef.width) {
+ sdata_info(sdata,
+ "IBSS %pM received channel switch from incompatible channel width (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
+ ifibss->bssid,
+ params.chandef.chan->center_freq,
+ params.chandef.width,
+ params.chandef.center_freq1,
+ params.chandef.center_freq2);
+ goto disconnect;
+ }
+ break;
+ default:
+ /* should not happen, sta_flags should prevent VHT modes. */
+ WARN_ON(1);
+ goto disconnect;
+ }
+
+ if (!cfg80211_reg_can_beacon(sdata->local->hw.wiphy, ¶ms.chandef)) {
+ sdata_info(sdata,
+ "IBSS %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
+ ifibss->bssid,
+ params.chandef.chan->center_freq,
+ params.chandef.width,
+ params.chandef.center_freq1,
+ params.chandef.center_freq2);
+ goto disconnect;
+ }
+
+ err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy,
+ ¶ms.chandef);
+ if (err < 0)
+ goto disconnect;
+ if (err) {
+ /* IBSS-DFS only allowed with a control program */
+ if (!ifibss->userspace_handles_dfs)
+ goto disconnect;
+
+ params.radar_required = true;
+ }
+
+ rcu_read_lock();
+ chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+ if (!chanctx_conf) {
+ rcu_read_unlock();
+ goto disconnect;
+ }
+
+ /* don't handle for multi-VIF cases */
+ chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
+ if (chanctx->refcount > 1) {
+ rcu_read_unlock();
+ goto disconnect;
+ }
+ num_chanctx = 0;
+ list_for_each_entry_rcu(chanctx, &sdata->local->chanctx_list, list)
+ num_chanctx++;
+
+ if (num_chanctx > 1) {
+ rcu_read_unlock();
+ goto disconnect;
+ }
+ rcu_read_unlock();
+
+ /* all checks done, now perform the channel switch. */
+ ibss_dbg(sdata,
+ "received channel switch announcement to go to channel %d MHz\n",
+ params.chandef.chan->center_freq);
+
+ params.block_tx = !!csa_ie.mode;
+
+ ieee80211_ibss_csa_beacon(sdata, ¶ms);
+ sdata->csa_radar_required = params.radar_required;
+
+ if (params.block_tx)
+ ieee80211_stop_queues_by_reason(&sdata->local->hw,
+ IEEE80211_MAX_QUEUE_MAP,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+
+ sdata->csa_chandef = params.chandef;
+ sdata->vif.csa_active = true;
+
+ ieee80211_bss_info_change_notify(sdata, err);
+ drv_channel_switch_beacon(sdata, ¶ms.chandef);
+
+ ieee80211_ibss_csa_mark_radar(sdata);
+
+ return true;
+disconnect:
+ ibss_dbg(sdata, "Can't handle channel switch, disconnect\n");
+ ieee80211_queue_work(&sdata->local->hw,
+ &ifibss->csa_connection_drop_work);
+
+ ieee80211_ibss_csa_mark_radar(sdata);
+
+ return true;
+}
+
+static void
+ieee80211_rx_mgmt_spectrum_mgmt(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt, size_t len,
+ struct ieee80211_rx_status *rx_status,
+ struct ieee802_11_elems *elems)
+{
+ int required_len;
+
+ if (len < IEEE80211_MIN_ACTION_SIZE + 1)
+ return;
+
+ /* CSA is the only action we handle for now */
+ if (mgmt->u.action.u.measurement.action_code !=
+ WLAN_ACTION_SPCT_CHL_SWITCH)
+ return;
+
+ required_len = IEEE80211_MIN_ACTION_SIZE +
+ sizeof(mgmt->u.action.u.chan_switch);
+ if (len < required_len)
+ return;
+
+ ieee80211_ibss_process_chanswitch(sdata, elems, false);
+}
+
static void ieee80211_rx_mgmt_deauth_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len)
/* check if we need to merge IBSS */
- /* we use a fixed BSSID */
- if (sdata->u.ibss.fixed_bssid)
- goto put_bss;
-
/* not an IBSS */
if (!(cbss->capability & WLAN_CAPABILITY_IBSS))
goto put_bss;
sdata->u.ibss.ssid_len))
goto put_bss;
+ /* process channel switch */
+ if (ieee80211_ibss_process_chanswitch(sdata, elems, true))
+ goto put_bss;
+
/* same BSSID */
if (ether_addr_equal(cbss->bssid, sdata->u.ibss.bssid))
goto put_bss;
+ /* we use a fixed BSSID */
+ if (sdata->u.ibss.fixed_bssid)
+ goto put_bss;
+
if (ieee80211_have_rx_timestamp(rx_status)) {
/* time when timestamp field was received */
rx_timestamp =
ieee80211_queue_work(&local->hw, &sdata->work);
}
-static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata)
-{
- struct ieee80211_local *local = sdata->local;
- int active = 0;
- struct sta_info *sta;
-
- sdata_assert_lock(sdata);
-
- rcu_read_lock();
-
- list_for_each_entry_rcu(sta, &local->sta_list, list) {
- if (sta->sdata == sdata &&
- time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
- jiffies)) {
- active++;
- break;
- }
- }
-
- rcu_read_unlock();
-
- return active;
-}
-
static void ieee80211_ibss_sta_expire(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_rx_status *rx_status;
struct ieee80211_mgmt *mgmt;
u16 fc;
+ struct ieee802_11_elems elems;
+ int ies_len;
rx_status = IEEE80211_SKB_RXCB(skb);
mgmt = (struct ieee80211_mgmt *) skb->data;
case IEEE80211_STYPE_DEAUTH:
ieee80211_rx_mgmt_deauth_ibss(sdata, mgmt, skb->len);
break;
+ case IEEE80211_STYPE_ACTION:
+ switch (mgmt->u.action.category) {
+ case WLAN_CATEGORY_SPECTRUM_MGMT:
+ ies_len = skb->len -
+ offsetof(struct ieee80211_mgmt,
+ u.action.u.chan_switch.variable);
+
+ if (ies_len < 0)
+ break;
+
+ ieee802_11_parse_elems(
+ mgmt->u.action.u.chan_switch.variable,
+ ies_len, true, &elems);
+
+ if (elems.parse_error)
+ break;
+
+ ieee80211_rx_mgmt_spectrum_mgmt(sdata, mgmt, skb->len,
+ rx_status, &elems);
+ break;
+ }
}
mgmt_out:
(unsigned long) sdata);
INIT_LIST_HEAD(&ifibss->incomplete_stations);
spin_lock_init(&ifibss->incomplete_lock);
+ INIT_WORK(&ifibss->csa_connection_drop_work,
+ ieee80211_csa_connection_drop_work);
}
/* scan finished notification */
sdata->u.ibss.privacy = params->privacy;
sdata->u.ibss.control_port = params->control_port;
+ sdata->u.ibss.userspace_handles_dfs = params->userspace_handles_dfs;
sdata->u.ibss.basic_rates = params->basic_rates;
/* fix basic_rates if channel does not support these rates */
int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
- struct ieee80211_local *local = sdata->local;
- struct cfg80211_bss *cbss;
- u16 capability;
- int active_ibss;
- struct sta_info *sta;
- struct beacon_data *presp;
-
- active_ibss = ieee80211_sta_active_ibss(sdata);
-
- if (!active_ibss && !is_zero_ether_addr(ifibss->bssid)) {
- capability = WLAN_CAPABILITY_IBSS;
- if (ifibss->privacy)
- capability |= WLAN_CAPABILITY_PRIVACY;
-
- cbss = cfg80211_get_bss(local->hw.wiphy, ifibss->chandef.chan,
- ifibss->bssid, ifibss->ssid,
- ifibss->ssid_len, WLAN_CAPABILITY_IBSS |
- WLAN_CAPABILITY_PRIVACY,
- capability);
-
- if (cbss) {
- cfg80211_unlink_bss(local->hw.wiphy, cbss);
- cfg80211_put_bss(local->hw.wiphy, cbss);
- }
- }
-
- ifibss->state = IEEE80211_IBSS_MLME_SEARCH;
- memset(ifibss->bssid, 0, ETH_ALEN);
+ ieee80211_ibss_disconnect(sdata);
ifibss->ssid_len = 0;
-
- sta_info_flush(sdata);
-
- spin_lock_bh(&ifibss->incomplete_lock);
- while (!list_empty(&ifibss->incomplete_stations)) {
- sta = list_first_entry(&ifibss->incomplete_stations,
- struct sta_info, list);
- list_del(&sta->list);
- spin_unlock_bh(&ifibss->incomplete_lock);
-
- sta_info_free(local, sta);
- spin_lock_bh(&ifibss->incomplete_lock);
- }
- spin_unlock_bh(&ifibss->incomplete_lock);
-
- netif_carrier_off(sdata->dev);
+ memset(ifibss->bssid, 0, ETH_ALEN);
/* remove beacon */
kfree(sdata->u.ibss.ie);
- presp = rcu_dereference_protected(ifibss->presp,
- lockdep_is_held(&sdata->wdev.mtx));
- RCU_INIT_POINTER(sdata->u.ibss.presp, NULL);
/* on the next join, re-program HT parameters */
memset(&ifibss->ht_capa, 0, sizeof(ifibss->ht_capa));
memset(&ifibss->ht_capa_mask, 0, sizeof(ifibss->ht_capa_mask));
- sdata->vif.bss_conf.ibss_joined = false;
- sdata->vif.bss_conf.ibss_creator = false;
- sdata->vif.bss_conf.enable_beacon = false;
- sdata->vif.bss_conf.ssid_len = 0;
- clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
- ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
- BSS_CHANGED_IBSS);
- ieee80211_vif_release_channel(sdata);
synchronize_rcu();
- kfree(presp);
skb_queue_purge(&sdata->skb_queue);
projects / ~andy / linux / blobdiff