Managed to figure out why this was happening - I had the NUM_VFS in the
card firmware configured to 127 (the maximum value) - reducing this to a
lower number allowed me to successfully switch the cards into switchdev
mode at which point the ip tools all worked again.
The clue that pointed to this appeared when using the proposed 5.3 hwe
edge kernel:
[ 694.027106] infiniband (null): mlx5_ib_alloc_counters:5452:(pid
47479): couldn't allocate queue counter for port 128, err -12
(128 being the pertinent value)
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1849856
Title:
ip commands error with mellanox devices in switchdev mode
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