Felix Fietkau <nbd@xxxxxxxx> wrote:
> ath_tx_count_airtime is doing a lot of unnecessary work:
>
> - Redundant station lookup
> - Redundant rcu_read_lock/unlock
> - Useless memcpy of bf->rates
> - Useless NULL check of bf->bf_mpdu
> - Redundant lookup of the skb tid
>
> Additionally, it tries to look up the mac80211 queue index from the txq,
> which fails if the frame was delivered via the power save queue.
>
> This patch fixes all of these issues by passing down the right set of
> pointers instead of doing extra work
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 63fefa050477 ("ath9k: Introduce airtime fairness scheduling between stations")
> Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
> Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxx>
Patch applied to ath-next branch of ath.git, thanks.
a6e56d749f1b ath9k: clean up and fix ath_tx_count_airtime
--
https://patchwork.kernel.org/patch/9568369/
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