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

From: Aleksander Jan Bajkowski
Date: Tue Jan 04 2022 - 10:11:57 EST


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@xxxxx>
---
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