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iwlwifi: mvm: avoid sending too many BARs

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[ Upstream commit 1a19c139be ]

When we receive TX response, we may release a few packets
due to a hole that was closed in the transmission window.

However, if that frame failed, we will mark all the released
frames as failed and will send multiple BARs.

This affects statistics badly, and cause unnecessary frames
transmission.

Instead, mark all the following packets as success, with the
desired result of sending a bar for the failed frame only.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sara Sharon
2018-05-01 15:12:08 +03:00
committed by Greg Kroah-Hartman
parent b31b2dfbe6
commit 2b3be9f4de
1 changed files with 8 additions and 0 deletions
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8
drivers/net/wireless/intel/iwlwifi/mvm/tx.c
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@@ -1303,6 +1303,14 @@ static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
break;
}
/*
* If we are freeing multiple frames, mark all the frames
* but the first one as acked, since they were acknowledged
* before
* */
if (skb_freed > 1)
info->flags |= IEEE80211_TX_STAT_ACK;
iwl_mvm_tx_status_check_trigger(mvm, status);
info->status.rates[0].count = tx_resp->failure_frame + 1;