Re: git: 1cce5ef05d7b - main - lagg: re-check port caps after bringing up a port

From: Harry Schmalzbauer <freebsd_at_omnilan.de>
Date: Sat, 31 Oct 2026 17:13:20 UTC 
On 2026-07-08 14:28, Andrew Gallatin wrote:
> The branch main has been updated by gallatin:
>
> URL: https://cgit.FreeBSD.org/src/commit/?id=1cce5ef05d7ba077b0cb29d30b59f3a862e7e5ae
>
> commit 1cce5ef05d7ba077b0cb29d30b59f3a862e7e5ae
> Author:     Andrew Gallatin <gallatin@FreeBSD.org>
> AuthorDate: 2026-07-08 12:24:35 +0000
> Commit:     Andrew Gallatin <gallatin@FreeBSD.org>
> CommitDate: 2026-07-08 12:27:58 +0000
>
>      lagg: re-check port caps after bringing up a port
>      
>      Some nic drivers (including iflib) do not initialize if_hwassist
>      until after the interface is brought up.  If a lagg member is included
>      in a lagg when its not yet been brought up, that will cause lagg to see
>      if_hwassist=0 and will disable all checksum offload, etc, on the interface.
>      This is almost impossible to debug without kgdb or dtrace, as ifconfig does
>      not surface if_hwassist.
>      
>      Fix this by re-calculating lagg caps (including if_hwassist) after adding a port.
>      
>      I encountered this problem when I had a commented-out if_foo1=up entry in
>      my rc.conf that i neglected to uncomment when I was re-configuring a lagg.
>      
>      Sponsored by: Netflix
>      Reviewed by: markj, zlei
>      Differential Revision: https://reviews.freebsd.org/D58062


Hello,

is guess this is still a desirable MFC candidate for 15.2, is it?
Maybe  kbowling@ knows - after the huge iflib/nic merges recently...  
THANKS a lot for that updates!

-harry