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veth: Implement VLAN tag XDP hint

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In order to test VLAN tag hint in hardware-independent selftests, implement
newly added hint in veth driver.

Acked-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://lore.kernel.org/r/20231205210847.28460-13-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Larysa Zaremba 2023-12-05 22:08:41 +01:00 committed by Alexei Starovoitov
parent b591137c4e
commit fca783799f
1 changed files with 19 additions and 0 deletions
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19
drivers/net/veth.c
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@ -1722,6 +1722,24 @@ 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, __be16 *vlan_proto,
u16 *vlan_tci)
{
const struct veth_xdp_buff *_ctx = (void *)ctx;
const 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 const struct net_device_ops veth_netdev_ops = {
.ndo_init = veth_dev_init,
.ndo_open = veth_open,
@ -1746,6 +1764,7 @@ 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,
};
#define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HW_CSUM | \