https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243871
Bug ID: 243871
Summary: mlx5en don't forwarding packets
Product: Base System
Version: 12.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: mi...@elwix.org
FreeBSD 12.1 have different version of mlx5en driver with release
3.5.2/Sep.2019 from FreeBSD 12.0 version 3.4.2/July.2018
On brand new HP ProLiant XL170r Gen10 with two Mellanox 10/25G HP cards.
I saw big issue with forwarding packets. They don't pass out over the cables.
You can see that they going out with tcpdump on interface, but really they
don't sending to destination!
After observing and debugging at entire process from hardware,firmwares on it,
network stack till mlx5e_xmit path in the new mlx5 driver. I made replacement
of new driver with old one in my local kernel tree. Now it works fine!
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