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mac80211: Tear down aggregation sessions for suspend/resume

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When the driver has been notified with a STA_REMOVE, it tears down
the internal ADDBA state. On resume, trying to initiate aggregation would
fail because mac80211 has not cleared the operational state for that <TID,STA>.
This can be fixed by tearing down the existing sessions on a suspend.

Also, the driver can initiate a new BA session when suspend is in progress.
This is fixed by marking the station as being in suspend state and
denying ADDBA requests for such STAs.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2009-03-17 08:50:06 +05:30 • committed by John W. Linville
parent e23a9014fd
commit 722f069a6d
4 changed files with 45 additions and 0 deletions
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9
net/mac80211/agg-tx.c
View file

@ -257,6 +257,15 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
goto unlock;
}
if (test_sta_flags(sta, WLAN_STA_SUSPEND)) {
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Suspend in progress. "
"Denying BA session request\n");
#endif
ret = -EINVAL;
goto unlock;
}
spin_lock_bh(&sta->lock);
sdata = sta->sdata;