[PATCH net-next] stmmac: prefetch right address

[PATCH net-next] stmmac: prefetch right address

[Matteo Croce]

From: Matteo Croce <mcroce@microsoft.com>

To support XDP, a headroom is prepended to the packet data.
Consider this offset when doing a prefetch.

Fixes: da5ec7f22a0f ("net: stmmac: refactor stmmac_init_rx_buffers for stmmac_reinit_rx_buffers")
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 0a266fa0af7e..30b411762a9c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -5129,7 +5129,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 
 		/* Buffer is good. Go on. */
 
-		prefetch(page_address(buf->page));
+		prefetch(page_address(buf->page) + buf->page_offset);
 		if (buf->sec_page)
 			prefetch(page_address(buf->sec_page));
 
-- 
2.31.1

Re: [PATCH net-next] stmmac: prefetch right address

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Wed,  9 Jun 2021 19:23:03 +0200 you wrote:
> From: Matteo Croce <mcroce@microsoft.com>
> 
> To support XDP, a headroom is prepended to the packet data.
> Consider this offset when doing a prefetch.
> 
> Fixes: da5ec7f22a0f ("net: stmmac: refactor stmmac_init_rx_buffers for stmmac_reinit_rx_buffers")
> Signed-off-by: Matteo Croce <mcroce@microsoft.com>
> 
> [...]

Here is the summary with links:
  - [net-next] stmmac: prefetch right address
    https://git.kernel.org/netdev/net-next/c/4744bf072b46

You are awesome, thank you!
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