From: Robert Hancock Date: Sat, 5 Mar 2022 02:24:42 +0000 (-0600) Subject: net: axienet: reduce default RX interrupt threshold to 1 X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=40da5d680e02ca8d61237192db4b5833d3c9639f;p=linux.git net: axienet: reduce default RX interrupt threshold to 1 Now that NAPI has been implemented, the hardware interrupt mitigation mechanism is not needed to avoid excessive interrupt load in most cases. Reduce the default RX interrupt threshold to 1 to reduce introduced latency. This can be increased with ethtool if desired if some applications still want to reduce interrupts. Signed-off-by: Robert Hancock Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet.h b/drivers/net/ethernet/xilinx/xilinx_axienet.h index c771827587b39..6f0f13b4fb1ae 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet.h +++ b/drivers/net/ethernet/xilinx/xilinx_axienet.h @@ -122,7 +122,7 @@ /* Default TX/RX Threshold and waitbound values for SGDMA mode */ #define XAXIDMA_DFT_TX_THRESHOLD 24 #define XAXIDMA_DFT_TX_WAITBOUND 254 -#define XAXIDMA_DFT_RX_THRESHOLD 24 +#define XAXIDMA_DFT_RX_THRESHOLD 1 #define XAXIDMA_DFT_RX_WAITBOUND 254 #define XAXIDMA_BD_CTRL_TXSOF_MASK 0x08000000 /* First tx packet */