Commit a5fec3c8 authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Jakub Kicinski
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net: netsec: Add metadata support for xdp mode 



Set metadata size building the skb from xdp_buff in netsec driver.
netsec driver sets xdp headroom to NETSEC_RXBUF_HEADROOM:

NETSEC_RXBUF_HEADROOM max(XDP_PACKET_HEADROOM, NET_SKB_PAD) + NET_IP_ALIGN

so the headroom is large enough to contain xdp_frame and xdp metadata.
Please note this patch is just compiled tested.

Acked-by: default avatarIlias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: default avatarMichal Kubiak <michal.kubiak@intel.com>
Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250318-mvneta-xdp-meta-v2-3-b6075778f61f@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 9a45e193

drivers/net/ethernet/socionext/netsec.c

+5 −2
Original line number Diff line number Diff line
@@ -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 &&