[Bug 265714] igc(4) drops link under high traffic

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 15 Aug 2023 03:57:10 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265714

john@feith.com changed:

           What    |Removed                     |Added
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                 CC|                            |john@feith.com

--- Comment #2 from john@feith.com ---
I recently upgrade a FreeBSD 13.2 stable system to newer hardware which
included an i225 v3 NIC (it's an IOCrest M.2 card).  The system is connected to
a 1Gbps switch ... every now and then the system loses link, most recent
occasion was while running an installworld over NFS.  Rebooting gets things
working again.
It's noted by the Intel response at:

 
https://community.intel.com/t5/Ethernet-Products/Intel-Ethernet-Controller-3-I225-V-Connection-Drop/td-p/1482427

that the i225 is subject to a connection drop issue that's fixed by NVM 1.93
along with driver changes.

While currently some of the other Intel NIC drivers for FreeBSD will display
EEPROM / NVM information ... i.e.:

  igb0: EEPROM V1.115-0 eTrack 0x87850000

It doesn't appear that the igc driver provides that information.  It also might
be useful for the driver to display a warning if the i225 NIC is using a NVM
prior to 1.93.

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