leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

net: axienet: increase default TX ring size to 128

Browse Source 
With previous changes to make the driver handle the TX ring size more
correctly, the default TX ring size of 64 appears to significantly
bottleneck TX performance to around 600 Mbps on a 1 Gbps link on ZynqMP.
Increasing this to 128 seems to bring performance up to near line rate and
shouldn't cause excess bufferbloat (this driver doesn't yet support modern
byte-based queue management).

Fixes: 8a3b7a252d ("drivers/net/ethernet/xilinx: added Xilinx AXI Ethernet driver")
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Robert Hancock 2022-01-18 15:41:32 -06:00 committed by David S. Miller
parent bb193e3db8
commit 2d19c3fd80
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/xilinx/xilinx_axienet_main.c
View File

@ -41,7 +41,7 @@
#include "xilinx_axienet.h" #include "xilinx_axienet.h"
/* Descriptors defines for Tx and Rx DMA */ /* Descriptors defines for Tx and Rx DMA */
#define TX_BD_NUM_DEFAULT 64 #define TX_BD_NUM_DEFAULT 128
#define RX_BD_NUM_DEFAULT 1024 #define RX_BD_NUM_DEFAULT 1024
#define TX_BD_NUM_MIN (MAX_SKB_FRAGS + 1) #define TX_BD_NUM_MIN (MAX_SKB_FRAGS + 1)
#define TX_BD_NUM_MAX 4096 #define TX_BD_NUM_MAX 4096