在 2022/2/7 下午2:02, Xuan Zhuo 写道:
On Mon, 7 Feb 2022 11:39:36 +0800, Jason Wang <jasowang@xxxxxxxxxx> wrote:
On Wed, Jan 26, 2022 at 3:35 PM Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx> wrote:
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The virtio spec already supports the virtio queue reset function. This patch set
is to add this function to the kernel. The relevant virtio spec information is
here:
https://github.com/oasis-tcs/virtio-spec/issues/124
Also regarding MMIO support for queue reset, I plan to support it after this
patch is passed.
#14-#17 is the disable/enable function of rx/tx pair implemented by virtio-net
using the new helper.
One thing that came to mind is the steering. E.g if we disable an RX,
should we stop steering packets to that queue?
Yes, we should reselect a queue.
Thanks.
Maybe a spec patch for that?
Thanks
Thanks
This function is not currently referenced by other
functions. It is more to show the usage of the new helper, I not sure if they
are going to be merged together.
Please review. Thanks.
v3:
1. keep vq, irq unreleased
Xuan Zhuo (17):
virtio_pci: struct virtio_pci_common_cfg add queue_notify_data
virtio: queue_reset: add VIRTIO_F_RING_RESET
virtio: queue_reset: struct virtio_config_ops add callbacks for
queue_reset
virtio: queue_reset: add helper
vritio_ring: queue_reset: extract the release function of the vq ring
virtio_ring: queue_reset: split: add __vring_init_virtqueue()
virtio_ring: queue_reset: split: support enable reset queue
virtio_ring: queue_reset: packed: support enable reset queue
virtio_ring: queue_reset: add vring_reset_virtqueue()
virtio_pci: queue_reset: update struct virtio_pci_common_cfg and
option functions
virtio_pci: queue_reset: release vq by vp_dev->vqs
virtio_pci: queue_reset: setup_vq use vring_setup_virtqueue()
virtio_pci: queue_reset: support VIRTIO_F_RING_RESET
virtio_net: virtnet_tx_timeout() fix style
virtio_net: virtnet_tx_timeout() stop ref sq->vq
virtio_net: split free_unused_bufs()
virtio_net: support pair disable/enable
drivers/net/virtio_net.c | 220 ++++++++++++++++++++++---
drivers/virtio/virtio_pci_common.c | 62 ++++---
drivers/virtio/virtio_pci_common.h | 11 +-
drivers/virtio/virtio_pci_legacy.c | 5 +-
drivers/virtio/virtio_pci_modern.c | 120 +++++++++++++-
drivers/virtio/virtio_pci_modern_dev.c | 28 ++++
drivers/virtio/virtio_ring.c | 144 +++++++++++-----
include/linux/virtio.h | 1 +
include/linux/virtio_config.h | 75 ++++++++-
include/linux/virtio_pci_modern.h | 2 +
include/linux/virtio_ring.h | 42 +++--
include/uapi/linux/virtio_config.h | 7 +-
include/uapi/linux/virtio_pci.h | 2 +
13 files changed, 618 insertions(+), 101 deletions(-)
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2.31.0
