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net: axienet: reduce default RX interrupt threshold to 1

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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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Robert Hancock
2022-03-04 20:24:42 -06:00
committed by David S. Miller
parent cc37610caa
commit 40da5d680e
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/xilinx/xilinx_axienet.h
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@@ -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 */