From: Lorenzo Bianconi <lore...@kernel.org>
Date: Tue, 1 Oct 2019 10:33:51 +0200
> Always acquire tx descriptor spinlock even if a xdp program is not loaded
> on the netsec device since ndo_xdp_xmit can run concurrently with
> netsec_netdev_start_xmit and netsec_clean_tx_dring. This can happen
> loading a xdp program on a different device (e.g virtio-net) and
> xdp_do_redirect_map/xdp_do_redirect_slow can redirect to netsec even if
> we do not have a xdp program on it.
>
> Fixes: ba2b232108d3 ("net: netsec: add XDP support")
> Tested-by: Ilias Apalodimas <ilias.apalodi...@linaro.org>
> Signed-off-by: Lorenzo Bianconi <lore...@kernel.org>
Applied and queued up for v5.3 -stable.
