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From: David Aldrich <david.aldrich.ntml@gmail.com>
Date: Wed, 24 Mar 2021 11:42:18 +0000
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To: users <users@dpdk.org>
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Subject: [dpdk-users] Help needed to interface to new device
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Hi

We currently use DPDK v.18.11.9 with a 10GBe NIC based on the Intel X722
chipset.  We bind to that device using the command:

usertools/dpdk-devbind.py -b igb_uio `lspci | grep X722 | awk '{print $1}'`

and it works ok.

Now we need to bind to a different NIC, which is part of an in-house FPGA
design (the NIC is 3rd party IP).

The new NIC is at 0d58 so we bind using:

usertools/dpdk-devbind.py -b igb_uio `lspci | grep 0d58 | awk '{print $1}'`

and we see:

dpdk-devbind.py --status Network devices using DPDK-compatible driver
============================================
0000:b3:00.0 'Device 0d58' drv=igb_uio unused=i40e
0000:b3:00.1 'Device 0d58' drv=igb_uio unused=i40e
0000:b5:00.0 'Device 0d58' drv=igb_uio unused=i40e
0000:b5:00.1 'Device 0d58' drv=igb_uio unused=i40e

But when we run our application, rte_eth_dev_count_avail() returns 0 so the
app fails.

I don't know how to debug this. Any suggestions please?

Best regards
David