From: Felix Fietkau Date: Thu, 24 Sep 2015 16:57:37 +0200 Subject: [PATCH] ath9k: declare required extra tx headroom ath9k inserts padding between the 802.11 header and the data area (to align it). Since it didn't declare this extra required headroom, this led to some nasty issues like randomly dropped packets in some setups. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau --- --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -875,6 +875,7 @@ static void ath9k_set_hw_capab(struct at hw->max_rate_tries = 10; hw->sta_data_size = sizeof(struct ath_node); hw->vif_data_size = sizeof(struct ath_vif); + hw->extra_tx_headroom = 4; hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1; hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1;