diff mbox series

[net-next,v2,6/7] net: axienet: reduce default RX interrupt threshold to 1

Message ID 20220305002305.1710462-7-robert.hancock@calian.com (mailing list archive)
State New, archived
Headers show
Series NAPI/GRO support for axienet driver | expand

Commit Message

Robert Hancock March 5, 2022, 12:23 a.m. UTC 
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 <robert.hancock@calian.com>
---
 drivers/net/ethernet/xilinx/xilinx_axienet.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet.h b/drivers/net/ethernet/xilinx/xilinx_axienet.h
index c771827587b3..6f0f13b4fb1a 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 */