#define IEEE80211_AUTH_MAX_TRIES 3
#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
#define IEEE80211_ASSOC_MAX_TRIES 3
-#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
-#define IEEE80211_PROBE_WAIT (HZ / 5)
+#define IEEE80211_MAX_PROBE_TRIES 5
+
+/*
+ * beacon loss detection timeout
+ * XXX: should depend on beacon interval
+ */
+#define IEEE80211_BEACON_LOSS_TIME (2 * HZ)
+/*
+ * Time the connection can be idle before we probe
+ * it to see if we can still talk to the AP.
+ */
+#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
+/*
+ * Time we wait for a probe response after sending
+ * a probe request because of beacon loss or for
+ * checking the connection still works.
+ */
+#define IEEE80211_PROBE_WAIT (HZ / 2)
#define TMR_RUNNING_TIMER 0
#define TMR_RUNNING_CHANSW 1
WARN_ON(!mutex_is_locked(&ifmgd->mtx));
}
+/*
+ * We can have multiple work items (and connection probing)
+ * scheduling this timer, but we need to take care to only
+ * reschedule it when it should fire _earlier_ than it was
+ * asked for before, or if it's not pending right now. This
+ * function ensures that. Note that it then is required to
+ * run this function for all timeouts after the first one
+ * has happened -- the work that runs from this timer will
+ * do that.
+ */
+static void run_again(struct ieee80211_if_managed *ifmgd,
+ unsigned long timeout)
+{
+ ASSERT_MGD_MTX(ifmgd);
+
+ if (!timer_pending(&ifmgd->timer) ||
+ time_before(timeout, ifmgd->timer.expires))
+ mod_timer(&ifmgd->timer, timeout);
+}
+
+static void mod_beacon_timer(struct ieee80211_sub_if_data *sdata)
+{
+ if (sdata->local->hw.flags & IEEE80211_HW_BEACON_FILTER)
+ return;
+
+ mod_timer(&sdata->u.mgd.bcn_mon_timer,
+ round_jiffies_up(jiffies + IEEE80211_BEACON_LOSS_TIME));
+}
+
static int ecw2cw(int ecw)
{
return (1 << ecw) - 1;
static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
- const u8 *bssid, u16 stype, u16 reason)
+ const u8 *bssid, u16 stype, u16 reason,
+ void *cookie)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
if (stype == IEEE80211_STYPE_DEAUTH)
- cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, skb->len);
+ if (cookie)
+ __cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
+ else
+ cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
else
- cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, skb->len);
+ if (cookie)
+ __cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
+ else
+ cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED);
}
return;
}
- queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work);
+ ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
}
void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
if (!ifmgd->associated)
return;
- if (sdata->local->sw_scanning || sdata->local->hw_scanning)
+ if (sdata->local->scanning)
return;
/* Disregard subsequent beacons if we are already running a timer
sdata->local->csa_channel = new_ch;
if (sw_elem->count <= 1) {
- queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work);
+ ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
} else {
ieee80211_stop_queues_by_reason(&sdata->local->hw,
IEEE80211_QUEUE_STOP_REASON_CSA);
* If we are scanning right now then the parameters will
* take effect when scan finishes.
*/
- if (local->hw_scanning || local->sw_scanning)
+ if (local->scanning)
return;
if (conf->dynamic_ps_timeout > 0 &&
if (count == 1 && found->u.mgd.powersave &&
found->u.mgd.associated && list_empty(&found->u.mgd.work_list) &&
- !(found->u.mgd.flags & IEEE80211_STA_PROBEREQ_POLL)) {
+ !(found->u.mgd.flags & (IEEE80211_STA_BEACON_POLL |
+ IEEE80211_STA_CONNECTION_POLL))) {
s32 beaconint_us;
if (latency < 0)
{
struct ieee80211_local *local = (void *) data;
- if (local->quiescing)
+ if (local->quiescing || local->suspended)
return;
- queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work);
+ ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
}
/* MLME */
}
static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_bss *bss,
+ struct ieee80211_mgd_work *wk,
u32 bss_info_changed)
{
struct ieee80211_local *local = sdata->local;
+ struct ieee80211_bss *bss = wk->bss;
bss_info_changed |= BSS_CHANGED_ASSOC;
/* set timing information */
bss->cbss.capability, bss->has_erp_value, bss->erp_value);
sdata->u.mgd.associated = bss;
+ sdata->u.mgd.old_associate_work = wk;
memcpy(sdata->u.mgd.bssid, bss->cbss.bssid, ETH_ALEN);
+ /* just to be sure */
+ sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL |
+ IEEE80211_STA_BEACON_POLL);
+
ieee80211_led_assoc(local, 1);
sdata->vif.bss_conf.assoc = 1;
ieee80211_bss_info_change_notify(sdata, bss_info_changed);
- /* will be same as sdata */
- if (local->ps_sdata) {
- mutex_lock(&local->iflist_mtx);
- ieee80211_recalc_ps(local, -1);
- mutex_unlock(&local->iflist_mtx);
- }
+ mutex_lock(&local->iflist_mtx);
+ ieee80211_recalc_ps(local, -1);
+ mutex_unlock(&local->iflist_mtx);
netif_tx_start_all_queues(sdata->dev);
netif_carrier_on(sdata->dev);
* due to work needing to be done. Hence, queue the STAs work
* again for that.
*/
- queue_work(local->hw.workqueue, &ifmgd->work);
+ ieee80211_queue_work(&local->hw, &ifmgd->work);
return RX_MGMT_CFG80211_AUTH_TO;
}
ieee80211_send_probe_req(sdata, NULL, wk->ssid, wk->ssid_len, NULL, 0);
wk->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
- mod_timer(&ifmgd->timer, wk->timeout);
+ run_again(ifmgd, wk->timeout);
return RX_MGMT_NONE;
}
* due to work needing to be done. Hence, queue the STAs work
* again for that.
*/
- queue_work(local->hw.workqueue, &ifmgd->work);
+ ieee80211_queue_work(&local->hw, &ifmgd->work);
return RX_MGMT_CFG80211_AUTH_TO;
}
sdata->dev->name, wk->bss->cbss.bssid, wk->tries);
ieee80211_send_auth(sdata, 1, wk->auth_alg, wk->ie, wk->ie_len,
- wk->bss->cbss.bssid, 0);
+ wk->bss->cbss.bssid, NULL, 0, 0);
wk->auth_transaction = 2;
wk->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
- mod_timer(&ifmgd->timer, wk->timeout);
+ run_again(ifmgd, wk->timeout);
return RX_MGMT_NONE;
}
static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
- const u8 *bssid, bool deauth)
+ bool deauth)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
u32 changed = 0, config_changed = 0;
+ u8 bssid[ETH_ALEN];
ASSERT_MGD_MTX(ifmgd);
+ if (WARN_ON(!ifmgd->associated))
+ return;
+
+ memcpy(bssid, ifmgd->associated->cbss.bssid, ETH_ALEN);
+
ifmgd->associated = NULL;
memset(ifmgd->bssid, 0, ETH_ALEN);
+ if (deauth) {
+ kfree(ifmgd->old_associate_work);
+ ifmgd->old_associate_work = NULL;
+ } else {
+ struct ieee80211_mgd_work *wk = ifmgd->old_associate_work;
+
+ wk->state = IEEE80211_MGD_STATE_IDLE;
+ list_add(&wk->list, &ifmgd->work_list);
+ }
+
/*
* we need to commit the associated = NULL change because the
* scan code uses that to determine whether this iface should
* due to work needing to be done. Hence, queue the STAs work
* again for that.
*/
- queue_work(local->hw.workqueue, &ifmgd->work);
+ ieee80211_queue_work(&local->hw, &ifmgd->work);
return RX_MGMT_CFG80211_ASSOC_TO;
}
ieee80211_send_assoc(sdata, wk);
wk->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
- mod_timer(&ifmgd->timer, wk->timeout);
+ run_again(ifmgd, wk->timeout);
return RX_MGMT_NONE;
}
* from AP because we know that the connection is working both ways
* at that time. But multicast frames (and hence also beacons) must
* be ignored here, because we need to trigger the timer during
- * data idle periods for sending the periodical probe request to
- * the AP.
+ * data idle periods for sending the periodic probe request to the
+ * AP we're connected to.
*/
- if (!is_multicast_ether_addr(hdr->addr1))
- mod_timer(&sdata->u.mgd.timer,
- jiffies + IEEE80211_MONITORING_INTERVAL);
+ if (is_multicast_ether_addr(hdr->addr1))
+ return;
+
+ mod_timer(&sdata->u.mgd.conn_mon_timer,
+ round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
}
-void ieee80211_beacon_loss_work(struct work_struct *work)
+static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
{
- struct ieee80211_sub_if_data *sdata =
- container_of(work, struct ieee80211_sub_if_data,
- u.mgd.beacon_loss_work);
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
const u8 *ssid;
- /*
- * The driver has already reported this event and we have
- * already sent a probe request. Maybe the AP died and the
- * driver keeps reporting until we disassociate... We have
- * to ignore that because otherwise we would continually
- * reset the timer and never check whether we received a
- * probe response!
- */
- if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL)
+ ssid = ieee80211_bss_get_ie(&ifmgd->associated->cbss, WLAN_EID_SSID);
+ ieee80211_send_probe_req(sdata, ifmgd->associated->cbss.bssid,
+ ssid + 2, ssid[1], NULL, 0);
+
+ ifmgd->probe_send_count++;
+ ifmgd->probe_timeout = jiffies + IEEE80211_PROBE_WAIT;
+ run_again(ifmgd, ifmgd->probe_timeout);
+}
+
+static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
+ bool beacon)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ bool already = false;
+
+ if (!netif_running(sdata->dev))
+ return;
+
+ if (sdata->local->scanning)
return;
mutex_lock(&ifmgd->mtx);
goto out;
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: driver reports beacon loss from AP "
+ if (beacon && net_ratelimit())
+ printk(KERN_DEBUG "%s: detected beacon loss from AP "
"- sending probe request\n", sdata->dev->name);
#endif
- ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL;
+ /*
+ * The driver/our work has already reported this event or the
+ * connection monitoring has kicked in and we have already sent
+ * a probe request. Or maybe the AP died and the driver keeps
+ * reporting until we disassociate...
+ *
+ * In either case we have to ignore the current call to this
+ * function (except for setting the correct probe reason bit)
+ * because otherwise we would reset the timer every time and
+ * never check whether we received a probe response!
+ */
+ if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
+ IEEE80211_STA_CONNECTION_POLL))
+ already = true;
+
+ if (beacon)
+ ifmgd->flags |= IEEE80211_STA_BEACON_POLL;
+ else
+ ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
+
+ if (already)
+ goto out;
mutex_lock(&sdata->local->iflist_mtx);
ieee80211_recalc_ps(sdata->local, -1);
mutex_unlock(&sdata->local->iflist_mtx);
- ssid = ieee80211_bss_get_ie(&ifmgd->associated->cbss, WLAN_EID_SSID);
- ieee80211_send_probe_req(sdata, ifmgd->associated->cbss.bssid,
- ssid + 2, ssid[1], NULL, 0);
-
- mod_timer(&ifmgd->timer, jiffies + IEEE80211_PROBE_WAIT);
+ ifmgd->probe_send_count = 0;
+ ieee80211_mgd_probe_ap_send(sdata);
out:
mutex_unlock(&ifmgd->mtx);
}
+void ieee80211_beacon_loss_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data,
+ u.mgd.beacon_loss_work);
+
+ ieee80211_mgd_probe_ap(sdata, true);
+}
+
void ieee80211_beacon_loss(struct ieee80211_vif *vif)
{
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
- queue_work(sdata->local->hw.workqueue,
- &sdata->u.mgd.beacon_loss_work);
+ ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.beacon_loss_work);
}
EXPORT_SYMBOL(ieee80211_beacon_loss);
return;
ieee80211_send_auth(sdata, 3, wk->auth_alg,
elems.challenge - 2, elems.challenge_len + 2,
- wk->bss->cbss.bssid, 1);
+ wk->bss->cbss.bssid,
+ wk->key, wk->key_len, wk->key_idx);
wk->auth_transaction = 4;
}
sdata->dev->name, bssid, reason_code);
if (!wk) {
- ieee80211_set_disassoc(sdata, bssid, true);
+ ieee80211_set_disassoc(sdata, true);
} else {
list_del(&wk->list);
kfree(wk);
reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
- printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n",
- sdata->dev->name, reason_code);
+ printk(KERN_DEBUG "%s: disassociated from %pM (Reason: %u)\n",
+ sdata->dev->name, mgmt->sa, reason_code);
- ieee80211_set_disassoc(sdata, ifmgd->associated->cbss.bssid, false);
+ ieee80211_set_disassoc(sdata, false);
return RX_MGMT_CFG80211_DISASSOC;
}
sdata->dev->name, tu, ms);
wk->timeout = jiffies + msecs_to_jiffies(ms);
if (ms > IEEE80211_ASSOC_TIMEOUT)
- mod_timer(&ifmgd->timer,
- jiffies + msecs_to_jiffies(ms));
+ run_again(ifmgd, jiffies + msecs_to_jiffies(ms));
return RX_MGMT_NONE;
}
return RX_MGMT_NONE;
}
- /* update new sta with its last rx activity */
- sta->last_rx = jiffies;
-
set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC |
WLAN_STA_ASSOC_AP);
if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
wk->bss->cbss.bssid,
ap_ht_cap_flags);
+ /* delete work item -- must be before set_associated for PS */
+ list_del(&wk->list);
+
/* set AID and assoc capability,
* ieee80211_set_associated() will tell the driver */
bss_conf->aid = aid;
bss_conf->assoc_capability = capab_info;
- ieee80211_set_associated(sdata, wk->bss, changed);
+ /* this will take ownership of wk */
+ ieee80211_set_associated(sdata, wk, changed);
/*
- * initialise the time of last beacon to be the association time,
- * otherwise beacon loss check will trigger immediately
+ * Start timer to probe the connection to the AP now.
+ * Also start the timer that will detect beacon loss.
*/
- ifmgd->last_beacon = jiffies;
+ ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
+ mod_beacon_timer(sdata);
- list_del(&wk->list);
- kfree(wk);
return RX_MGMT_CFG80211_ASSOC;
}
/* direct probe may be part of the association flow */
if (wk && wk->state == IEEE80211_MGD_STATE_PROBE) {
- printk(KERN_DEBUG "%s direct probe responded\n",
+ printk(KERN_DEBUG "%s: direct probe responded\n",
sdata->dev->name);
wk->tries = 0;
wk->state = IEEE80211_MGD_STATE_AUTH;
if (ifmgd->associated &&
memcmp(mgmt->bssid, ifmgd->associated->cbss.bssid, ETH_ALEN) == 0 &&
- ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) {
- ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
+ ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
+ IEEE80211_STA_CONNECTION_POLL)) {
+ ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
+ IEEE80211_STA_BEACON_POLL);
mutex_lock(&sdata->local->iflist_mtx);
ieee80211_recalc_ps(sdata->local, -1);
mutex_unlock(&sdata->local->iflist_mtx);
+ /*
+ * We've received a probe response, but are not sure whether
+ * we have or will be receiving any beacons or data, so let's
+ * schedule the timers again, just in case.
+ */
+ mod_beacon_timer(sdata);
+ mod_timer(&ifmgd->conn_mon_timer,
+ round_jiffies_up(jiffies +
+ IEEE80211_CONNECTION_IDLE_TIME));
}
}
if (rx_status->freq != local->hw.conf.channel->center_freq)
return;
- if (WARN_ON(!ifmgd->associated))
+ /*
+ * We might have received a number of frames, among them a
+ * disassoc frame and a beacon...
+ */
+ if (!ifmgd->associated)
return;
bssid = ifmgd->associated->cbss.bssid;
- if (WARN_ON(memcmp(bssid, mgmt->bssid, ETH_ALEN) != 0))
+ /*
+ * And in theory even frames from a different AP we were just
+ * associated to a split-second ago!
+ */
+ if (memcmp(bssid, mgmt->bssid, ETH_ALEN) != 0)
return;
- if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) {
+ if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
if (net_ratelimit()) {
printk(KERN_DEBUG "%s: cancelling probereq poll due "
"to a received beacon\n", sdata->dev->name);
}
#endif
- ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
+ ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL;
mutex_lock(&local->iflist_mtx);
ieee80211_recalc_ps(local, -1);
mutex_unlock(&local->iflist_mtx);
}
+ /*
+ * Push the beacon loss detection into the future since
+ * we are processing a beacon from the AP just now.
+ */
+ mod_beacon_timer(sdata);
+
ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
len - baselen, &elems,
bssid, ap_ht_cap_flags);
}
+ /* Note: country IE parsing is done for us by cfg80211 */
if (elems.country_elem) {
- /* Note we are only reviewing this on beacons
- * for the BSSID we are associated to */
- regulatory_hint_11d(local->hw.wiphy,
- elems.country_elem, elems.country_elem_len);
-
/* TODO: IBSS also needs this */
if (elems.pwr_constr_elem)
ieee80211_handle_pwr_constr(sdata,
case IEEE80211_STYPE_DISASSOC:
case IEEE80211_STYPE_ACTION:
skb_queue_tail(&sdata->u.mgd.skb_queue, skb);
- queue_work(local->hw.workqueue, &sdata->u.mgd.work);
+ ieee80211_queue_work(&local->hw, &sdata->u.mgd.work);
return RX_QUEUED;
}
case RX_MGMT_CFG80211_ASSOC:
cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, skb->len);
break;
+ case RX_MGMT_CFG80211_DEAUTH:
+ cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
+ break;
default:
WARN(1, "unexpected: %d", rma);
}
return;
}
- queue_work(local->hw.workqueue, &ifmgd->work);
+ ieee80211_queue_work(&local->hw, &ifmgd->work);
}
static void ieee80211_sta_work(struct work_struct *work)
if (!netif_running(sdata->dev))
return;
- if (local->sw_scanning || local->hw_scanning)
+ if (local->scanning)
return;
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
return;
/*
- * Nothing should have been stuffed into the workqueue during
- * the suspend->resume cycle. If this WARN is seen then there
- * is a bug with either the driver suspend or something in
- * mac80211 stuffing into the workqueue which we haven't yet
- * cleared during mac80211's suspend cycle.
+ * ieee80211_queue_work() should have picked up most cases,
+ * here we'll pick the the rest.
*/
- if (WARN_ON(local->suspended))
+ if (WARN(local->suspended, "STA MLME work scheduled while "
+ "going to suspend\n"))
return;
ifmgd = &sdata->u.mgd;
/* then process the rest of the work */
mutex_lock(&ifmgd->mtx);
- list_for_each_entry(wk, &ifmgd->work_list, list) {
- if (wk->state != IEEE80211_MGD_STATE_IDLE) {
- anybusy = true;
- break;
+ if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
+ IEEE80211_STA_CONNECTION_POLL) &&
+ ifmgd->associated) {
+ u8 bssid[ETH_ALEN];
+
+ memcpy(bssid, ifmgd->associated->cbss.bssid, ETH_ALEN);
+ if (time_is_after_jiffies(ifmgd->probe_timeout))
+ run_again(ifmgd, ifmgd->probe_timeout);
+
+ else if (ifmgd->probe_send_count < IEEE80211_MAX_PROBE_TRIES) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "No probe response from AP %pM"
+ " after %dms, try %d\n", bssid,
+ (1000 * IEEE80211_PROBE_WAIT)/HZ,
+ ifmgd->probe_send_count);
+#endif
+ ieee80211_mgd_probe_ap_send(sdata);
+ } else {
+ /*
+ * We actually lost the connection ... or did we?
+ * Let's make sure!
+ */
+ ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
+ IEEE80211_STA_BEACON_POLL);
+ printk(KERN_DEBUG "No probe response from AP %pM"
+ " after %dms, disconnecting.\n",
+ bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
+ ieee80211_set_disassoc(sdata, true);
+ mutex_unlock(&ifmgd->mtx);
+ /*
+ * must be outside lock due to cfg80211,
+ * but that's not a problem.
+ */
+ ieee80211_send_deauth_disassoc(sdata, bssid,
+ IEEE80211_STYPE_DEAUTH,
+ WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
+ NULL);
+ mutex_lock(&ifmgd->mtx);
}
}
- ieee80211_recalc_idle(local);
-
- if (!anybusy) {
- mutex_unlock(&ifmgd->mtx);
- if (test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request))
- queue_delayed_work(local->hw.workqueue,
- &local->scan_work,
- round_jiffies_relative(0));
- return;
- }
+ ieee80211_recalc_idle(local);
list_for_each_entry_safe(wk, tmp, &ifmgd->work_list, list) {
- if (time_before(jiffies, wk->timeout))
+ if (time_is_after_jiffies(wk->timeout)) {
+ /*
+ * This work item isn't supposed to be worked on
+ * right now, but take care to adjust the timer
+ * properly.
+ */
+ run_again(ifmgd, wk->timeout);
continue;
+ }
switch (wk->state) {
default:
}
}
+ list_for_each_entry(wk, &ifmgd->work_list, list) {
+ if (wk->state != IEEE80211_MGD_STATE_IDLE) {
+ anybusy = true;
+ break;
+ }
+ }
+ if (!anybusy &&
+ test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request))
+ ieee80211_queue_delayed_work(&local->hw,
+ &local->scan_work,
+ round_jiffies_relative(0));
+
mutex_unlock(&ifmgd->mtx);
list_for_each_entry_safe(wk, tmp, &free_work, list) {
ieee80211_recalc_idle(local);
}
+static void ieee80211_sta_bcn_mon_timer(unsigned long data)
+{
+ struct ieee80211_sub_if_data *sdata =
+ (struct ieee80211_sub_if_data *) data;
+ struct ieee80211_local *local = sdata->local;
+
+ if (local->quiescing)
+ return;
+
+ ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.beacon_loss_work);
+}
+
+static void ieee80211_sta_conn_mon_timer(unsigned long data)
+{
+ struct ieee80211_sub_if_data *sdata =
+ (struct ieee80211_sub_if_data *) data;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_local *local = sdata->local;
+
+ if (local->quiescing)
+ return;
+
+ ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
+}
+
+static void ieee80211_sta_monitor_work(struct work_struct *work)
+{
+ struct ieee80211_sub_if_data *sdata =
+ container_of(work, struct ieee80211_sub_if_data,
+ u.mgd.monitor_work);
+
+ ieee80211_mgd_probe_ap(sdata, false);
+}
+
static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
{
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
- /*
- * Need to update last_beacon to avoid beacon loss
- * test to trigger.
- */
- sdata->u.mgd.last_beacon = jiffies;
-
- queue_work(sdata->local->hw.workqueue,
+ sdata->u.mgd.flags &= ~(IEEE80211_STA_BEACON_POLL |
+ IEEE80211_STA_CONNECTION_POLL);
+
+ /* let's probe the connection once */
+ ieee80211_queue_work(&sdata->local->hw,
+ &sdata->u.mgd.monitor_work);
+ /* and do all the other regular work too */
+ ieee80211_queue_work(&sdata->local->hw,
&sdata->u.mgd.work);
}
}
cancel_work_sync(&ifmgd->chswitch_work);
if (del_timer_sync(&ifmgd->chswitch_timer))
set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running);
+
+ cancel_work_sync(&ifmgd->monitor_work);
+ /* these will just be re-established on connection */
+ del_timer_sync(&ifmgd->conn_mon_timer);
+ del_timer_sync(&ifmgd->bcn_mon_timer);
}
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
ifmgd = &sdata->u.mgd;
INIT_WORK(&ifmgd->work, ieee80211_sta_work);
+ INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
INIT_WORK(&ifmgd->beacon_loss_work, ieee80211_beacon_loss_work);
setup_timer(&ifmgd->timer, ieee80211_sta_timer,
(unsigned long) sdata);
+ setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
+ (unsigned long) sdata);
+ setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
+ (unsigned long) sdata);
setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
(unsigned long) sdata);
skb_queue_head_init(&ifmgd->skb_queue);
wk->ie_len = req->ie_len;
}
+ if (req->key && req->key_len) {
+ wk->key_len = req->key_len;
+ wk->key_idx = req->key_idx;
+ memcpy(wk->key, req->key, req->key_len);
+ }
+
ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
memcpy(wk->ssid, ssid + 2, ssid[1]);
wk->ssid_len = ssid[1];
wk->state = IEEE80211_MGD_STATE_PROBE;
wk->auth_alg = auth_alg;
+ wk->timeout = jiffies; /* run right away */
/*
* XXX: if still associated need to tell AP that we're going
list_add(&wk->list, &sdata->u.mgd.work_list);
mutex_unlock(&ifmgd->mtx);
- queue_work(sdata->local->hw.workqueue, &sdata->u.mgd.work);
+ ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.work);
return 0;
}
wk->state = IEEE80211_MGD_STATE_ASSOC;
wk->tries = 0;
+ wk->timeout = jiffies; /* run right away */
if (req->use_mfp) {
ifmgd->mfp = IEEE80211_MFP_REQUIRED;
else
ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
- queue_work(sdata->local->hw.workqueue, &sdata->u.mgd.work);
+ ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.work);
err = 0;
}
int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
- struct cfg80211_deauth_request *req)
+ struct cfg80211_deauth_request *req,
+ void *cookie)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_mgd_work *wk;
const u8 *bssid = NULL;
- printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n",
- sdata->dev->name, req->reason_code);
-
mutex_lock(&ifmgd->mtx);
if (ifmgd->associated && &ifmgd->associated->cbss == req->bss) {
bssid = req->bss->bssid;
- ieee80211_set_disassoc(sdata, bssid, true);
+ ieee80211_set_disassoc(sdata, true);
} else list_for_each_entry(wk, &ifmgd->work_list, list) {
if (&wk->bss->cbss == req->bss) {
bssid = req->bss->bssid;
}
}
- /* cfg80211 should catch this... */
- if (WARN_ON(!bssid)) {
+ /*
+ * cfg80211 should catch this ... but it's racy since
+ * we can receive a deauth frame, process it, hand it
+ * to cfg80211 while that's in a locked section already
+ * trying to tell us that the user wants to disconnect.
+ */
+ if (!bssid) {
mutex_unlock(&ifmgd->mtx);
return -ENOLINK;
}
mutex_unlock(&ifmgd->mtx);
+ printk(KERN_DEBUG "%s: deauthenticating from %pM by local choice (reason=%d)\n",
+ sdata->dev->name, bssid, req->reason_code);
+
ieee80211_send_deauth_disassoc(sdata, bssid,
- IEEE80211_STYPE_DEAUTH, req->reason_code);
+ IEEE80211_STYPE_DEAUTH, req->reason_code,
+ cookie);
return 0;
}
int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
- struct cfg80211_disassoc_request *req)
+ struct cfg80211_disassoc_request *req,
+ void *cookie)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n",
- sdata->dev->name, req->reason_code);
-
mutex_lock(&ifmgd->mtx);
- /* cfg80211 should catch that */
- if (WARN_ON(&ifmgd->associated->cbss != req->bss)) {
+ /*
+ * cfg80211 should catch this ... but it's racy since
+ * we can receive a disassoc frame, process it, hand it
+ * to cfg80211 while that's in a locked section already
+ * trying to tell us that the user wants to disconnect.
+ */
+ if (&ifmgd->associated->cbss != req->bss) {
mutex_unlock(&ifmgd->mtx);
return -ENOLINK;
}
- ieee80211_set_disassoc(sdata, req->bss->bssid, false);
+ printk(KERN_DEBUG "%s: disassociating from %pM by local choice (reason=%d)\n",
+ sdata->dev->name, req->bss->bssid, req->reason_code);
+
+ ieee80211_set_disassoc(sdata, false);
mutex_unlock(&ifmgd->mtx);
ieee80211_send_deauth_disassoc(sdata, req->bss->bssid,
- IEEE80211_STYPE_DISASSOC, req->reason_code);
+ IEEE80211_STYPE_DISASSOC, req->reason_code,
+ cookie);
return 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff