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iwlwifi: mvm: inc pending frames counter also when txing non-sta

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commit fb896c44f88a75843a072cd6961b1615732f7811 upstream.

Until this patch, when TXing non-sta the pending_frames counter
wasn't increased, but it WAS decreased in
iwl_mvm_rx_tx_cmd_single(), what makes it negative in certain
conditions. This in turn caused much trouble when we need to
remove the station since we won't be waiting forever until
pending_frames gets 0. In certain cases, we were exhausting
the station table even in BSS mode, because we had a lot of
stale stations.

Increase the counter also in iwl_mvm_tx_skb_non_sta() after a
successful TX to avoid this outcome.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liad Kaufman 2016-02-14 15:32:58 +02:00 committed by Greg Kroah-Hartman
parent 16517aa05d
commit 8c904a4498
1 changed files with 9 additions and 0 deletions
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9
drivers/net/wireless/iwlwifi/mvm/tx.c
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@ -421,6 +421,15 @@ int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb)
return -1;
}
/*
* Increase the pending frames counter, so that later when a reply comes
* in and the counter is decreased - we don't start getting negative
* values.
* Note that we don't need to make sure it isn't agg'd, since we're
* TXing non-sta
*/
atomic_inc(&mvm->pending_frames[sta_id]);
return 0;
}