[Bug 166724] if_re(4): watchdog timeout

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=166724

Mahmoud Al-Qudsi <mqudsi@neosmart.net> changed:

           What    |Removed                     |Added
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                 CC|                            |mqudsi@neosmart.net

--- Comment #112 from Mahmoud Al-Qudsi <mqudsi@neosmart.net> ---
This bug has been open since 2012 and a workaround has been documented here in
the comments since 2020. In the four years since, there have been no complaints
of any regressions or other issues caused by using the vendor-patched version
of the driver or the ports net/realtek-re-kmod repackagement of it.

The latest version of the vendor-provided driver is 1.98.0 and is compatible
with FreeBSD 4 and up (per the source code), tested on FreeBSD 5.x and up (per
the readme in the driver tarball), and is officially supported on FreeBSD 7 and
up (per the product support website).

The vendor-patched version of the driver continues to be distributed under the
terms of the 3-clause BSD license. 

re(4) says it is compatible with the 8139C+/8169/816xS/811xS/8168/810xE/8111
network cards, while the vendor-patched version of the driver says it is
compatible with
8169S/8169SB/8169SC/8168B/8168C/8168CP/8168D/8168DP/8168E/8168F/
8168FB/8168G/818GU/8168H/8168EP/8411/8168FP/
8101E/8102E/8103E/8401/8105E/8106E/8402/8125 so there is a difference in the
list of supported drivers though I do not know if this is a documentation
discrepancy or if support for the older 8139x, 811xS, and 8111 adapters has
actually been dropped (I would guess the former as otherwise it would be random
which cards have been dropped, assuming model numbers are linearly increasing
or at least linearly branching). 

It seems to me that we should be able to update the in-kernel version of the
driver to use the patched 1.98.0 version that's been reported to be issue-free
so this can be fixed upstream. If support for those 3 models has in fact been
dropped, we'd need to ship two separate versions of the re driver to keep
supporting the same chipsets, but I'm *guessing* that's not the case. Any
confirmation from users here who have used the net/realtek-re-kmod package with
8139x, 811xS, or 8111 network adapters would be very helpful.

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