Re: [PATCH net-next v5 03/15] virtio-net: add priv_flags IFF_NOT_USE_DMA_ADDR
flat view
From: Jason Wang <hidden>
Date: 2021-06-16 09:28:17
Also in:
bpf, virtualization
在 2021/6/10 下午4:21, Xuan Zhuo 写道:
quoted hunk ↗ jump to hunk
virtio-net not use dma addr directly. So add this priv_flags IFF_NOT_USE_DMA_ADDR. Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> --- drivers/net/virtio_net.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 0416a7e00914..6c1233f0ab3e 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c@@ -3064,7 +3064,7 @@ static int virtnet_probe(struct virtio_device *vdev) /* Set up network device as normal. */ dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE | - IFF_TX_SKB_NO_LINEAR; + IFF_TX_SKB_NO_LINEAR | IFF_NOT_USE_DMA_ADDR;
I wonder instead of doing trick like this, how about teach the virtio core to accept DMA address via sg? Thanks
dev->netdev_ops = &virtnet_netdev; dev->features = NETIF_F_HIGHDMA;