[PATCH RFC 4/4] net: veth: Implement RX queue index XDP hint

Mehdi Ben Hadj Khelifa
2025-09-23T20:00:58Z

Implement xmo_rx_queue_index callback in veth driver
to export queue_index for use in eBPF programs.

Signed-off-by: Mehdi Ben Hadj Khelifa <mehdi.benhadjkhelifa@gmail.com>
---
drivers/net/veth.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index a3046142cb8e..be76dd292819 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -1692,6 +1692,17 @@ static int veth_xdp_rx_vlan_tag(const struct xdp_md *ctx, __be16 *vlan_proto,
return err;
}

+static int veth_xdp_rx_queue_index(const struct xdp_md *ctx, u32 *queue_index)
+{
+ const struct veth_xdp_buff *_ctx = (void *)ctx;
+
+ if (!_ctx->xdp.rxq)
+ return -ENODATA;
+
+ *queue_index = _ctx->xdp.rxq->queue_index;
+ return 0;
+}
+
static const struct net_device_ops veth_netdev_ops = {
.ndo_init = veth_dev_init,
.ndo_open = veth_open,
@@ -1717,6 +1728,7 @@ 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_queue_index = veth_xdp_rx_queue_index,
};

#define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HW_CSUM | \
--
2.51.0