Commit c8fa1cb1 authored Dec 18, 2019 by Jose Abreu Committed by Greg Kroah-Hartman Jan 12, 2020

net: stmmac: RX buffer size must be 16 byte aligned



[ Upstream commit 8d558f0294fe92e04af192e221d0d0f6a180ee7b ]

We need to align the RX buffer size to at least 16 byte so that IP
doesn't mis-behave. This is required by HW.

Changes from v2:
- Align UP and not DOWN (David)

Fixes: 7ac6653a ("stmmac: Move the STMicroelectronics driver")
Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 864a8ff5

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -54,7 +54,7 @@
		#include "dwxgmac2.h"
		#include "hwif.h"

		#define STMMAC_ALIGN(x) __ALIGN_KERNEL(x, SMP_CACHE_BYTES)
		#define STMMAC_ALIGN(x) ALIGN(ALIGN(x, SMP_CACHE_BYTES), 16)
		#define TSO_MAX_BUFF_SIZE (SZ_16K - 1)

		/* Module parameters */