On Tue, Apr 15, 2025 at 07:28:15PM +0200, Alexander Lobakin wrote: > Unfortunately, it's not always possible to allocate > max(num_rxqs, nr_cpu_ids) even on hi-end NICs. > To mitigate this, add simple locking helpers to libeth_xdp. > As long as XDPSQs are not shared, the whole functionality is gated > behind a static lock. Otherwise, each bulk flush locks the queue for > the time of cleaning and filling the descriptors. > As long as this particular queue is not used by more than 1 CPU, > the impact is minimal (runtime check for boolean twice per 16+ > descriptors). > > Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx> # static key > Signed-off-by: Alexander Lobakin <aleksander.lobakin@xxxxxxxxx> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
