在 2021/6/10 下午4:21, Xuan Zhuo 写道:
virtio-net not use dma addr directly. So add this priv_flags
IFF_NOT_USE_DMA_ADDR.
Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
---
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;
