On Sun, Jan 26, 2020 at 04:14:01PM -0800, John Fastabend wrote: > virtio_net currently relies on rcu critical section to access the xdp > program in its xdp_xmit handler. However, the pointer to the xdp program > is only used to do a NULL pointer comparison to determine if xdp is > enabled or not. > > Use rcu_access_pointer() instead of rcu_dereference() to reflect this. > Then later when we drop rcu_read critical section virtio_net will not > need in special handling. > > Acked-by: Jesper Dangaard Brouer <brouer@xxxxxxxxxx> > Signed-off-by: John Fastabend <john.fastabend@xxxxxxxxx> Acked-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
