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net: mvpp2: Add metadata support for xdp mode

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Set metadata size building the skb from xdp_buff in mvpp2 driver
mvpp2 driver sets xdp headroom to:

MVPP2_MH_SIZE + MVPP2_SKB_HEADROOM

where

MVPP2_MH_SIZE 2
MVPP2_SKB_HEADROOM min(max(XDP_PACKET_HEADROOM, NET_SKB_PAD), 224)

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-v2-2-b6075778f61f@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lorenzo Bianconi
2025-03-18 12:46:06 +01:00
committed by Jakub Kicinski
parent 07b2fbffaa
commit 9a45e193c8
1 changed files with 6 additions and 2 deletions
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8
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
View File

@@ -3915,13 +3915,13 @@ static int mvpp2_rx(struct mvpp2_port *port, struct napi_struct *napi,
while (rx_done < rx_todo) {
struct mvpp2_rx_desc *rx_desc = mvpp2_rxq_next_desc_get(rxq);
u32 rx_status, timestamp, metasize = 0;
struct mvpp2_bm_pool *bm_pool;
struct page_pool *pp = NULL;
struct sk_buff *skb;
unsigned int frag_size;
dma_addr_t dma_addr;
phys_addr_t phys_addr;
u32 rx_status, timestamp;
int pool, rx_bytes, err, ret;
struct page *page;
void *data;
@@ -3983,7 +3983,7 @@ static int mvpp2_rx(struct mvpp2_port *port, struct napi_struct *napi,
xdp_init_buff(&xdp, PAGE_SIZE, xdp_rxq);
xdp_prepare_buff(&xdp, data,
MVPP2_MH_SIZE + MVPP2_SKB_HEADROOM,
rx_bytes, false);
rx_bytes, true);
ret = mvpp2_run_xdp(port, xdp_prog, &xdp, pp, &ps);
@@ -3999,6 +3999,8 @@ static int mvpp2_rx(struct mvpp2_port *port, struct napi_struct *napi,
ps.rx_bytes += rx_bytes;
continue;
}
metasize = xdp.data - xdp.data_meta;
}
if (frag_size)
@@ -4038,6 +4040,8 @@ static int mvpp2_rx(struct mvpp2_port *port, struct napi_struct *napi,
skb_reserve(skb, MVPP2_MH_SIZE + MVPP2_SKB_HEADROOM);
skb_put(skb, rx_bytes);
if (metasize)
skb_metadata_set(skb, metasize);
skb->ip_summed = mvpp2_rx_csum(port, rx_status);
skb->protocol = eth_type_trans(skb, dev);