netdev - [PATCH net-next] net: veth: rely on napi_build_skb in veth_convert_skb_to_xdp

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Message-Id: <0f822c0b72f8b71555c11745cb8fb33399d02de9.1683578488.git.lorenzo@kernel.org>
Date: Mon,  8 May 2023 22:45:23 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: netdev@...r.kernel.org
Cc: lorenzo.bianconi@...hat.com,
	bpf@...r.kernel.org,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	hawk@...nel.org,
	john.fastabend@...il.com,
	linyunsheng@...wei.com,
	ast@...nel.org,
	daniel@...earbox.net
Subject: [PATCH net-next] net: veth: rely on napi_build_skb in veth_convert_skb_to_xdp_buff

Since veth_convert_skb_to_xdp_buff routine runs in veth_poll() NAPI,
rely on napi_build_skb() instead of build_skb() to reduce skb allocation
cost.

Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
 drivers/net/veth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index dce9f9d63e04..3ae496011640 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -747,7 +747,7 @@ static int veth_convert_skb_to_xdp_buff(struct veth_rq *rq,
 		if (!page)
 			goto drop;
 
-		nskb = build_skb(page_address(page), PAGE_SIZE);
+		nskb = napi_build_skb(page_address(page), PAGE_SIZE);
 		if (!nskb) {
 			page_pool_put_full_page(rq->page_pool, page, true);
 			goto drop;
-- 
2.40.1