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wlcore/wl12xx: implement better beacon loss handling 

Make use of REGAINED_BSS_EVENT and instead of reporting connection
loss immediately on each BEACON_LOSE event, try if not regained
in reasonable period of time.

Signed-off-by: bartosz.markowski <bartosz.markowski@tieto.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Bartosz.Markowski@tieto.com 2012-04-26 10:35:07 +03:00 committed by John W. Linville
parent 161f17b530
commit 5f561f686b
4 changed files with 51 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/ti/wlcore/boot.c
View File

@ -413,6 +413,7 @@ int wlcore_boot_run_firmware(struct wl1271 *wl)
/* unmask required mbox events */
wl->event_mask = BSS_LOSE_EVENT_ID |
REGAINED_BSS_EVENT_ID |
SCAN_COMPLETE_EVENT_ID |
ROLE_STOP_COMPLETE_EVENT_ID |
RSSI_SNR_TRIGGER_0_EVENT_ID |

29
drivers/net/wireless/ti/wlcore/event.c
View File

@ -103,7 +103,6 @@ static int wl1271_event_process(struct wl1271 *wl)
struct ieee80211_vif *vif;
struct wl12xx_vif *wlvif;
u32 vector;
bool beacon_loss = false;
bool disconnect_sta = false;
unsigned long sta_bitmap = 0;
@ -141,20 +140,23 @@ static int wl1271_event_process(struct wl1271 *wl)
mbox->soft_gemini_sense_info);
/*
* The BSS_LOSE_EVENT_ID is only needed while psm (and hence beacon
* filtering) is enabled. Without PSM, the stack will receive all
* beacons and can detect beacon loss by itself.
*
* As there's possibility that the driver disables PSM before receiving
* BSS_LOSE_EVENT, beacon loss has to be reported to the stack.
*
* We are HW_MONITOR device. On beacon loss - queue
* connection loss work. Cancel it on REGAINED event.
*/
if (vector & BSS_LOSE_EVENT_ID) {
/* TODO: check for multi-role */
int delay = wl->conf.conn.synch_fail_thold *
wl->conf.conn.bss_lose_timeout;
wl1271_info("Beacon loss detected.");
cancel_delayed_work_sync(&wl->connection_loss_work);
ieee80211_queue_delayed_work(wl->hw, &wl->connection_loss_work,
msecs_to_jiffies(delay));
}
/* indicate to the stack, that beacons have been lost */
beacon_loss = true;
if (vector & REGAINED_BSS_EVENT_ID) {
/* TODO: check for multi-role */
wl1271_info("Beacon regained.");
cancel_delayed_work_sync(&wl->connection_loss_work);
}
if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID) {
@ -257,13 +259,6 @@ static int wl1271_event_process(struct wl1271 *wl)
rcu_read_unlock();
}
}
if (beacon_loss)
wl12xx_for_each_wlvif_sta(wl, wlvif) {
vif = wl12xx_wlvif_to_vif(wlvif);
ieee80211_connection_loss(vif);
}
return 0;
}

35
drivers/net/wireless/ti/wlcore/main.c
View File

@ -1120,6 +1120,7 @@ int wl1271_plt_stop(struct wl1271 *wl)
cancel_work_sync(&wl->recovery_work);
cancel_delayed_work_sync(&wl->elp_work);
cancel_delayed_work_sync(&wl->tx_watchdog_work);
cancel_delayed_work_sync(&wl->connection_loss_work);
mutex_lock(&wl->mutex);
wl1271_power_off(wl);
@ -1753,6 +1754,7 @@ static void wl1271_op_stop(struct ieee80211_hw *hw)
cancel_work_sync(&wl->tx_work);
cancel_delayed_work_sync(&wl->elp_work);
cancel_delayed_work_sync(&wl->tx_watchdog_work);
cancel_delayed_work_sync(&wl->connection_loss_work);
/* let's notify MAC80211 about the remaining pending TX frames */
wl12xx_tx_reset(wl, true);
@ -3705,6 +3707,9 @@ sta_not_found:
do_join = true;
set_assoc = true;
/* Cancel connection_loss_work */
cancel_delayed_work_sync(&wl->connection_loss_work);
/*
* use basic rates from AP, and determine lowest rate
* to use with control frames.
@ -4815,6 +4820,34 @@ static struct bin_attribute fwlog_attr = {
.read = wl1271_sysfs_read_fwlog,
};
void wl1271_connection_loss_work(struct work_struct *work)
{
struct delayed_work *dwork;
struct wl1271 *wl;
struct ieee80211_vif *vif;
struct wl12xx_vif *wlvif;
dwork = container_of(work, struct delayed_work, work);
wl = container_of(dwork, struct wl1271, connection_loss_work);
wl1271_info("Connection loss work.");
mutex_lock(&wl->mutex);
if (unlikely(wl->state == WL1271_STATE_OFF))
goto out;
/* Call mac80211 connection loss */
wl12xx_for_each_wlvif_sta(wl, wlvif) {
if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
goto out;
vif = wl12xx_wlvif_to_vif(wlvif);
ieee80211_connection_loss(vif);
}
out:
mutex_unlock(&wl->mutex);
}
static void wl12xx_derive_mac_addresses(struct wl1271 *wl,
u32 oui, u32 nic, int n)
{
@ -5070,6 +5103,8 @@ struct ieee80211_hw *wlcore_alloc_hw(size_t priv_size)
INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
INIT_DELAYED_WORK(&wl->tx_watchdog_work, wl12xx_tx_watchdog_work);
INIT_DELAYED_WORK(&wl->connection_loss_work,
wl1271_connection_loss_work);
wl->freezable_wq = create_freezable_workqueue("wl12xx_wq");
if (!wl->freezable_wq) {

3
drivers/net/wireless/ti/wlcore/wlcore.h
View File

@ -243,6 +243,9 @@ struct wl1271 {
struct wl1271_scan scan;
struct delayed_work scan_complete_work;
/* Connection loss work */
struct delayed_work connection_loss_work;
bool sched_scanning;
/* The current band */