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Commit 9eb61e6a authored by Felix Fietkau's avatar Felix Fietkau Committed by Sasha Levin
Browse files

ath9k: declare required extra tx headroom 



[ Upstream commit 029cd0370241641eb70235d205aa0b90c84dce44 ]

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: default avatarFelix Fietkau <nbd@openwrt.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
Signed-off-by: default avatarSasha Levin <sasha.levin@oracle.com>
parent c1128a82

drivers/net/wireless/ath/ath9k/init.c

+1 −0
Original line number Diff line number Diff line
@@ -821,6 +821,7 @@ static void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) 
	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;