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wl1271: Flush TX buffers to air before going to idle

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The mac80211 changes to idle almost immediately after transmitting some
frames, such as deauth etc. When going to idle, the wl1271 is disconnected,
which causes TX frames already on buffers, but not yet transmitted, to be
deleted.

To make sure deauth frames reach the air, allow the TX buffers to flush
before proceeding to idle.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Juuso Oikarinen
2010-05-24 11:18:17 +03:00
committed by John W. Linville
parent 0d58cbff24
commit 781608c413
4 changed files with 45 additions and 4 deletions
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11
drivers/net/wireless/wl12xx/wl1271_main.c
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@@ -1051,7 +1051,7 @@ static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
mutex_lock(&wl->mutex);
/* let's notify MAC80211 about the remaining pending TX frames */
wl1271_tx_flush(wl);
wl1271_tx_reset(wl);
wl1271_power_off(wl);
memset(wl->bssid, 0, ETH_ALEN);
@@ -1298,6 +1298,15 @@ static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
conf->power_level,
conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use");
/*
* mac80211 will go to idle nearly immediately after transmitting some
* frames, such as the deauth. To make sure those frames reach the air,
* wait here until the TX queue is fully flushed.
*/
if ((changed & IEEE80211_CONF_CHANGE_IDLE) &&
(conf->flags & IEEE80211_CONF_IDLE))
wl1271_tx_flush(wl);
mutex_lock(&wl->mutex);
if (unlikely(wl->state == WL1271_STATE_OFF))