Implement xmo_rx_checksum callback in veth driver to report RX checksum result to the eBPF program bounded to the NIC.
Signed-off-by: Lorenzo Bianconi <[email protected]> --- drivers/net/veth.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/net/veth.c b/drivers/net/veth.c index a3046142cb8e2658a30041129f8d298e5e0a5822..2a762cb132fd9fd90376965c65c4fedcc28a26c8 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -1692,6 +1692,24 @@ static int veth_xdp_rx_vlan_tag(const struct xdp_md *ctx, __be16 *vlan_proto, return err; } +static int veth_xdp_rx_checksum(const struct xdp_md *ctx, u8 *ip_summed, + u32 *cksum_meta) +{ + const struct veth_xdp_buff *_ctx = (void *)ctx; + const struct sk_buff *skb = _ctx->skb; + + if (!skb) + return -ENODATA; + + /* For locally generated packets ip_summed is set to + * CHECKSUM_PARTIAL. + */ + *ip_summed = skb->ip_summed; + *cksum_meta = 0; + + return 0; +} + static const struct net_device_ops veth_netdev_ops = { .ndo_init = veth_dev_init, .ndo_open = veth_open, @@ -1717,6 +1735,7 @@ 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_checksum = veth_xdp_rx_checksum, }; #define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HW_CSUM | \ -- 2.51.0
