virtio_net: support per queue interrupt coalesce command
authorGavin Li <gavinl@nvidia.com>
Mon, 31 Jul 2023 07:06:55 +0000 (10:06 +0300)
committerJakub Kicinski <kuba@kernel.org>
Wed, 2 Aug 2023 04:02:00 +0000 (21:02 -0700)
commit394bd87764b615b0fc17d34127a1cc7da76ff49f
treee1956c491c40ad717036c7faa5449e9960a03ba1
parent308d7982dcdc9259ef4a815fe08913087a2c0ea3
virtio_net: support per queue interrupt coalesce command

Add interrupt_coalesce config in send_queue and receive_queue to cache user
config.

Send per virtqueue interrupt moderation config to underlying device in
order to have more efficient interrupt moderation and cpu utilization of
guest VM.

Additionally, address all the VQs when updating the global configuration,
as now the individual VQs configuration can diverge from the global
configuration.

Signed-off-by: Gavin Li <gavinl@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Heng Qi <hengqi@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20230731070656.96411-3-gavinl@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
drivers/net/virtio_net.c
include/uapi/linux/virtio_net.h