linux-kernel - [PATCH net-next 1/3] MIPS: lantiq: dma: increase descritor count

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Message-Id: <20220104151144.181736-2-olek2@wp.pl>
Date:   Tue,  4 Jan 2022 16:11:42 +0100
From:   Aleksander Jan Bajkowski <olek2@...pl>
To:     tsbogend@...ha.franken.de, olek2@...pl, hauke@...ke-m.de,
        davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 1/3] MIPS: lantiq: dma: increase descritor count

NAT Performance results on BT Home Hub 5A (kernel 5.10.89, mtu 1500):

	Down		Up
Before	539 Mbps	599 Mbps
After	545 Mbps	625 Mbps

Signed-off-by: Aleksander Jan Bajkowski <olek2@...pl>
---
 arch/mips/include/asm/mach-lantiq/xway/xway_dma.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/include/asm/mach-lantiq/xway/xway_dma.h b/arch/mips/include/asm/mach-lantiq/xway/xway_dma.h
index 31ca9151b539..3dee15c61c8a 100644
--- a/arch/mips/include/asm/mach-lantiq/xway/xway_dma.h
+++ b/arch/mips/include/asm/mach-lantiq/xway/xway_dma.h
@@ -8,7 +8,7 @@
 #define LTQ_DMA_H__
 
 #define LTQ_DESC_SIZE		0x08	/* each descriptor is 64bit */
-#define LTQ_DESC_NUM		0x40	/* 64 descriptors / channel */
+#define LTQ_DESC_NUM		0xC0	/* 192 descriptors / channel */
 
 #define LTQ_DMA_OWN		BIT(31) /* owner bit */
 #define LTQ_DMA_C		BIT(30) /* complete bit */
-- 
2.30.2