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net: ena: Enable DIM by default

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Dynamic Interrupt Moderation (DIM) is a technique
designed to balance the need for timely data processing
with the desire to minimize CPU overhead.
Instead of generating an interrupt for every received
packet, the system can dynamically adjust the rate at
which interrupts are generated based on the incoming
traffic patterns.

Enabling DIM by default to improve the user experience.

DIM can be turned on/off through ethtool:
`ethtool -C <interface> adaptive-rx <on/off>`

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Osama Abboud <osamaabb@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
David Arinzon 2024-01-30 09:53:46 +00:00 committed by Paolo Abeni
parent 243f36eef5
commit 50d7a26605
1 changed files with 6 additions and 0 deletions
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6
drivers/net/ethernet/amazon/ena/ena_netdev.c
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@ -2134,6 +2134,12 @@ int ena_up(struct ena_adapter *adapter)
*/
ena_init_napi_in_range(adapter, 0, io_queue_count);
/* Enabling DIM needs to happen before enabling IRQs since DIM
* is run from napi routine
*/
if (ena_com_interrupt_moderation_supported(adapter->ena_dev))
ena_com_enable_adaptive_moderation(adapter->ena_dev);
rc = ena_request_io_irq(adapter);
if (rc)
goto err_req_irq;