[PATCH bpf-next 2/5] net: veth: Add xmo_rx_checksum callback to veth driver
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: 2026-02-10 17:22:10
Also in:
bpf, intel-wired-lan, linux-kselftest
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Implement xmo_rx_checksum callback in veth driver to report RX checksum result to the eBPF program bounded to the veth device. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> --- drivers/net/veth.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 14e6f2a2fb7783334d8f6afd54e658cf9a0e6f3d..38b70ad62db7e92cccc6c6c9ed1f5573d8baf48b 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c@@ -1693,6 +1693,25 @@ 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, + enum xdp_checksum *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,
@@ -1718,6 +1737,7 @@ 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 | \
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2.53.0