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From: Prashant Upadhyaya <praupadhyaya@gmail.com>
Date: Sun, 10 May 2020 19:35:52 +0530
Message-ID: <CAPBAu3W=-P5LrmzgZAk8Xi=JOLvHET7A-BPDae7riofd8P-BZA@mail.gmail.com>
To: dev@dpdk.org
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Subject: [dpdk-dev] Regarding rte_eth_rx_burst
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Hi,

I recently started using X722 NIC which uses i40 PMD of DPDK.
I am on DPDK 20.02.
I am seeing that when I call the rte_eth_rx_burst with last argument
as 1 (polling for 1 mbuf), then I am not receiving data via repeated
calls.
When I go for calls to rte_eth_rx_burst with last argument as 32, the
function does return the mbuf's as received data.

Is this expected ? Or this is a bug in the i40 driver handling this NIC ?

The polls to rte_eth_rx_burst with last argument as 1 works well for
the ixgbe PMD for sure since I have been using X520 successfully with
last argument as 1.

Regards
-Prashant