Commit c313d35f authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Jakub Kicinski
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net: mana: Add metadata support for xdp mode 



Set metadata size building the skb from xdp_buff in mana driver.
mana driver sets xdp headroom to XDP_PACKET_HEADROOM so the headroom is
large enough to contain xdp_frame and xdp metadata.
Please note this patch is just compiled tested.

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-v2-6-b6075778f61f@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 74fb1346

drivers/net/ethernet/microsoft/mana/mana_bpf.c

+1 −1
Original line number Diff line number Diff line
@@ -91,7 +91,7 @@ u32 mana_run_xdp(struct net_device *ndev, struct mana_rxq *rxq, 
		goto out;



	xdp_init_buff(xdp, PAGE_SIZE, &rxq->xdp_rxq);

	xdp_prepare_buff(xdp, buf_va, XDP_PACKET_HEADROOM, pkt_len, false);

	xdp_prepare_buff(xdp, buf_va, XDP_PACKET_HEADROOM, pkt_len, true);



	act = bpf_prog_run_xdp(prog, xdp);

drivers/net/ethernet/microsoft/mana/mana_en.c

+4 −0
Original line number Diff line number Diff line
@@ -1559,8 +1559,12 @@ static struct sk_buff *mana_build_skb(struct mana_rxq *rxq, void *buf_va, 
		return NULL;



	if (xdp->data_hard_start) {

		u32 metasize = xdp->data - xdp->data_meta;



		skb_reserve(skb, xdp->data - xdp->data_hard_start);

		skb_put(skb, xdp->data_end - xdp->data);

		if (metasize)

			skb_metadata_set(skb, metasize);

		return skb;

	}