Re: [PATCH net-next v5 2/9] virtio_net: virtnet_send_command supports command-specific-result

On Wed, 10 Apr 2024 14:09:11 +0800, Jason Wang wrote: > On Mon, Mar 18, 2024 at 7:06 PM Xuan Zhuo wrote: > > > > As the spec > > https://github.com/oasis-tcs/virtio-spec/commit/42f389989823039724f95bbbd243291ab0064f82 > > > > The virtnet cvq supports to get result from the device. > > > > Signed

Re: [PATCH net-next v5 4/9] virtio_net: support device stats

On Wed, 10 Apr 2024 14:09:23 +0800, Jason Wang wrote: > On Mon, Mar 18, 2024 at 7:06 PM Xuan Zhuo wrote: > > > > As the spec > > https://github.com/oasis-tcs/virtio-spec/commit/42f389989823039724f95bbbd243291ab0064f82 > > > > make virtio-net support getting the stats from the device by ethtool -

Re: [PATCH net-next v5 4/4] virtio-net: support dim profile fine-tuning

On Wed, 10 Apr 2024 11:09:16 +0800 Heng Qi wrote: > The point is that the driver may check whether the user has set > parameters that it does not want. > For example, virtio may not want the modification of comps, and ice/idpf > may not want the modification > of comps and pkts. If it's simply a

[PATCH vhost 0/6] virtio_net: rx enable premapped mode by default

Actually, for the virtio drivers, we can enable premapped mode whatever the value of use_dma_api. Because we provide the virtio dma apis. So the driver can enable premapped mode unconditionally. This patch set makes the big mode of virtio-net to support premapped mode. And enable premapped mode fo

[PATCH vhost 1/6] virtio_ring: introduce dma map api for page

The virtio-net big mode sq will use these APIs to map the pages. dma_addr_t virtqueue_dma_map_page_attrs(struct virtqueue *_vq, struct page *page, size_t offset, size_t size, enum dma_data_direction dir,

[PATCH vhost 2/6] virtio_ring: enable premapped mode whatever use_dma_api

Now, we have virtio DMA APIs, the driver can be the premapped mode whatever the virtio core uses dma api or not. So remove the limit of checking use_dma_api from virtqueue_set_dma_premapped(). Signed-off-by: Xuan Zhuo --- drivers/virtio/virtio_ring.c | 7 +-- 1 file changed, 1 insertion(+),

[PATCH vhost 3/6] virtio_net: replace private by pp struct inside page

Now, we chain the pages of big mode by the page's private variable. But a subsequent patch aims to make the big mode to support premapped mode. This requires additional space to store the dma addr. Within the sub-struct that contains the 'private', there is no suitable variable for storing the DMA

[PATCH vhost 4/6] virtio_net: big mode support premapped

In big mode, pre-mapping DMA is beneficial because if the pages are not used, we can reuse them without needing to unmap and remap. We require space to store the DMA address. I use the page.dma_addr to store the DMA address from the pp structure inside the page. Every page retrieved from get_a_pa

[PATCH vhost 5/6] virtio_net: enable premapped by default

Currently, big, merge, and small modes all support the premapped mode. We can now enable premapped mode by default. Furthermore, virtqueue_set_dma_premapped() must succeed when called immediately after find_vqs(). Consequently, we can assume that premapped mode is always enabled. Signed-off-by: Xu

[PATCH vhost 6/6] virtio_net: rx remove premapped failover code

Now, for the merge and small, the premapped mode can be enabled unconditionally. So we can remove the failover code. Signed-off-by: Xuan Zhuo --- drivers/net/virtio_net.c | 78 +--- 1 file changed, 32 insertions(+), 46 deletions(-) diff --git a/drivers/net/v

Re: [PATCH net-next v5 4/9] virtio_net: support device stats

On Wed, Apr 10, 2024 at 6:55 PM Xuan Zhuo wrote: > > On Wed, 10 Apr 2024 14:09:23 +0800, Jason Wang wrote: > > On Mon, Mar 18, 2024 at 7:06 PM Xuan Zhuo > > wrote: > > > > > > As the spec > > > https://github.com/oasis-tcs/virtio-spec/commit/42f389989823039724f95bbbd243291ab0064f82 > > > > > >