[PATCH net-next 3/7] net: netsec: Add metadata support for xdp mode

[Ilias Apalodimas]

On Tue, 11 Mar 2025 at 14:19, Lorenzo Bianconi <lorenzo at kernel.org> wrote:
>
> Set metadata size building the skb from xdp_buff in netsec driver
>
> Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
> ---
>  drivers/net/ethernet/socionext/netsec.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
> index dc99821c6226fbaece65c8ade23899f610b44a9a..ee890de69ffe795dbdcc5331e36be86769f0d9a6 100644
> --- a/drivers/net/ethernet/socionext/netsec.c
> +++ b/drivers/net/ethernet/socionext/netsec.c
> @@ -970,7 +970,7 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget)
>                 struct netsec_de *de = dring->vaddr + (DESC_SZ * idx);
>                 struct netsec_desc *desc = &dring->desc[idx];
>                 struct page *page = virt_to_page(desc->addr);
> -               u32 xdp_result = NETSEC_XDP_PASS;
> +               u32 metasize, xdp_result = NETSEC_XDP_PASS;
>                 struct sk_buff *skb = NULL;
>                 u16 pkt_len, desc_len;
>                 dma_addr_t dma_handle;
> @@ -1019,7 +1019,7 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget)
>                 prefetch(desc->addr);
>
>                 xdp_prepare_buff(&xdp, desc->addr, NETSEC_RXBUF_HEADROOM,
> -                                pkt_len, false);
> +                                pkt_len, true);
>
>                 if (xdp_prog) {
>                         xdp_result = netsec_run_xdp(priv, xdp_prog, &xdp);
> @@ -1048,6 +1048,9 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget)
>
>                 skb_reserve(skb, xdp.data - xdp.data_hard_start);
>                 skb_put(skb, xdp.data_end - xdp.data);
> +               metasize = xdp.data - xdp.data_meta;
> +               if (metasize)
> +                       skb_metadata_set(skb, metasize);
>                 skb->protocol = eth_type_trans(skb, priv->ndev);
>
>                 if (priv->rx_cksum_offload_flag &&
>
> --
> 2.48.1
>

Acked-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>