On 2021/1/18 下午7:54, Xuan Zhuo wrote:
On Mon, 18 Jan 2021 14:45:16 +0800, Jason Wang <jasowang@xxxxxxxxxx> wrote:
On 2021/1/16 上午10:59, Xuan Zhuo wrote:
If support xsk, a new ptr will be recovered during the
process of freeing the old ptr. In order to distinguish between ctx sent
by XDP_TX and ctx sent by xsk, a struct is added here to distinguish
between these two situations. virtnet_xdp_type.type It is used to
distinguish different ctx, and virtnet_xdp_type.offset is used to record
the offset between "true ctx" and virtnet_xdp_type.
The newly added virtnet_xsk_hdr will be used for xsk.
Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
Any reason that you can't simply encode the type in the pointer itself
as we used to do?
#define VIRTIO_XSK_FLAG BIT(1)
?
Since xdp socket does not use xdp_frame, we will encounter three data types when
recycling: skb, xdp_frame, xdp socket.
Just to make sure we are in the same page. Currently, the pointer type
is encoded with 1 bit in the pointer. Can we simply use 2 bit to
distinguish skb, xdp, xsk?
Thanks
