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iwlwifi: don't disable AGG queues that are not enabled 

If the BA session is torn down before we had a chance to start it
we shouldn't disable the AGG tx queues that weren't enabled.
This can happen in two cases:

1) We get a delBA before we drained our Tx queues in agg start flow
2) We didn't get the (successfull) addBA response on time

Reported-by: Daniel Chyan <dchyan@princeton.edu>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Emmanuel Grumbach 2012-05-03 14:22:06 -07:00 committed by John W. Linville
parent a46c3e424b
commit 8ff44ef26a
1 changed files with 9 additions and 3 deletions
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12
drivers/net/wireless/iwlwifi/iwl-agn-tx.c
View File

@ -590,11 +590,17 @@ turn_off:
spin_unlock_bh(&priv->sta_lock); spin_unlock_bh(&priv->sta_lock);
if (test_bit(txq_id, priv->agg_q_alloc)) { if (test_bit(txq_id, priv->agg_q_alloc)) {
/* If the transport didn't know that we wanted to start /*
* agreggation, don't tell it that we want to stop them * If the transport didn't know that we wanted to start
* agreggation, don't tell it that we want to stop them.
* This can happen when we don't get the addBA response on
* time, or we hadn't time to drain the AC queues.
*/ */
if (agg_state != IWL_AGG_STARTING) if (agg_state == IWL_AGG_ON)
iwl_trans_tx_agg_disable(priv->trans, txq_id); iwl_trans_tx_agg_disable(priv->trans, txq_id);
else
IWL_DEBUG_TX_QUEUES(priv, "Don't disable tx agg: %d\n",
agg_state);
iwlagn_dealloc_agg_txq(priv, txq_id); iwlagn_dealloc_agg_txq(priv, txq_id);
} }