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net: mana: Add metadata support for xdp mode

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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: Michal Kubiak <michal.kubiak@intel.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250318-mvneta-xdp-meta-v2-6-b6075778f61f@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2025-03-18 12:46:10 +01:00 committed by Jakub Kicinski
parent 74fb1346bc
commit c313d35f60
2 changed files with 5 additions and 1 deletions
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2
drivers/net/ethernet/microsoft/mana/mana_bpf.c
View File

@ -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);

4
drivers/net/ethernet/microsoft/mana/mana_en.c
View File

@ -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;
}