diff options
| author | Tim Hostetler <thostet@google.com> | 2025-11-14 13:11:46 -0800 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-11-18 15:52:43 +0100 |
| commit | 1b42e07af1ee65d10ee72f90d6fbd02a9b53208c (patch) | |
| tree | cd5f768f547c9feb310e91adf1ac9b21246dd65b /drivers/net/ethernet/google/gve/gve_main.c | |
| parent | 66adaf1021282edcb9be50bea5ea5aa78afda527 (diff) | |
gve: Add Rx HWTS metadata to AF_XDP ZC mode
By overlaying the struct gve_xdp_buff on top of the struct xdp_buff_xsk
that AF_XDP utilizes, the driver records the 32 bit timestamp via the
completion descriptor and the cached 64 bit NIC timestamp via gve_priv.
The driver's implementation of xmo_rx_timestamp extends the timestamp to
the full and up to date 64 bit timestamp and returns it to the user.
gve_rx_xsk_dqo is modified to accept a pointer to the completion
descriptor and no longer takes a buf_len explicitly as it can be pulled
out of the descriptor.
With this patch gve now supports bpf_xdp_metadata_rx_timestamp.
Signed-off-by: Tim Hostetler <thostet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Harshitha Ramamurthy <hramamurthy@google.com>
Signed-off-by: Joshua Washington <joshwash@google.com>
Link: https://patch.msgid.link/20251114211146.292068-5-joshwash@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/google/gve/gve_main.c')
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve_main.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c index 2b41a42fb516..a5a2b18d309b 100644 --- a/drivers/net/ethernet/google/gve/gve_main.c +++ b/drivers/net/ethernet/google/gve/gve_main.c @@ -2348,6 +2348,10 @@ static void gve_set_netdev_xdp_features(struct gve_priv *priv) xdp_set_features_flag_locked(priv->dev, xdp_features); } +static const struct xdp_metadata_ops gve_xdp_metadata_ops = { + .xmo_rx_timestamp = gve_xdp_rx_timestamp, +}; + static int gve_init_priv(struct gve_priv *priv, bool skip_describe_device) { int num_ntfy; @@ -2443,6 +2447,9 @@ setup_device: } gve_set_netdev_xdp_features(priv); + if (!gve_is_gqi(priv)) + priv->dev->xdp_metadata_ops = &gve_xdp_metadata_ops; + err = gve_setup_device_resources(priv); if (err) goto err_free_xsk_bitmap; |