[PATCH net-next V4 4/9] eth: fbnic: Prefetch packet headers on Rx

[Mohsin Bashir]

Issue a prefetch for the start of the buffer on Rx to try to avoid cache
miss on packet headers.

Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Mohsin Bashir <mohsin.bashr@xxxxxxxxx>
---
 drivers/net/ethernet/meta/fbnic/fbnic_txrx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c
index 2adbe175ac09..65d1e40addec 100644
--- a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c
@@ -888,7 +888,7 @@ static void fbnic_pkt_prepare(struct fbnic_napi_vector *nv, u64 rcd,
 
 	/* Build frame around buffer */
 	hdr_start = page_address(page) + hdr_pg_start;
-
+	net_prefetch(pkt->buff.data);
 	xdp_prepare_buff(&pkt->buff, hdr_start, headroom,
 			 len - FBNIC_RX_PAD, true);
 
-- 
2.47.3