On 07/19, Larysa Zaremba wrote:
> In order to test VLAN tag and checksum XDP hints in hardware-independent
> selfttests, implement newly added XDP hints in veth driver.
>
> Signed-off-by: Larysa Zaremba <larysa.zaremba@xxxxxxxxx>
Acked-by: Stanislav Fomichev <sdf@xxxxxxxxxx>
> ---
> drivers/net/veth.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 46 insertions(+)
>
> diff --git a/drivers/net/veth.c b/drivers/net/veth.c
> index 614f3e3efab0..86239549120d 100644
> --- a/drivers/net/veth.c
> +++ b/drivers/net/veth.c
> @@ -1732,6 +1732,50 @@ static int veth_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash,
> return 0;
> }
>
> +static int veth_xdp_rx_vlan_tag(const struct xdp_md *ctx, u16 *vlan_tci,
> + __be16 *vlan_proto)
> +{
> + struct veth_xdp_buff *_ctx = (void *)ctx;
> + struct sk_buff *skb = _ctx->skb;
> + int err;
> +
> + if (!skb)
> + return -ENODATA;
> +
> + err = __vlan_hwaccel_get_tag(skb, vlan_tci);
> + if (err)
> + return err;
> +
> + *vlan_proto = skb->vlan_proto;
> + return err;
> +}
> +
> +static int veth_xdp_rx_csum(const struct xdp_md *ctx,
> + enum xdp_csum_status *csum_status,
> + union xdp_csum_info *csum_info)
> +{
> + struct veth_xdp_buff *_ctx = (void *)ctx;
> + struct sk_buff *skb = _ctx->skb;
> +
> + if (!skb)
> + return -ENODATA;
> +
> + if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
> + *csum_status = skb->csum_level + 1;
> + } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
> + *csum_status = XDP_CHECKSUM_PARTIAL;
> + csum_info->csum_start = skb_checksum_start_offset(skb);
> + csum_info->csum_offset = skb->csum_offset;
> + } else if (skb->ip_summed == CHECKSUM_COMPLETE) {
> + *csum_status = XDP_CHECKSUM_COMPLETE;
> + csum_info->checksum = skb->csum;
> + } else {
> + return -ENODATA;
> + }
> +
> + return 0;
> +}
> +
> static const struct net_device_ops veth_netdev_ops = {
> .ndo_init = veth_dev_init,
> .ndo_open = veth_open,
> @@ -1756,6 +1800,8 @@ static const struct net_device_ops veth_netdev_ops = {
> static const struct xdp_metadata_ops veth_xdp_metadata_ops = {
> .xmo_rx_timestamp = veth_xdp_rx_timestamp,
> .xmo_rx_hash = veth_xdp_rx_hash,
> + .xmo_rx_vlan_tag = veth_xdp_rx_vlan_tag,
> + .xmo_rx_csum = veth_xdp_rx_csum,
> };
>
> #define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HW_CSUM | \
> --
> 2.41.0
>
