Date: Thu, 22 Nov 2018 08:43:49 +0200 From: Dan Partelly <dan_partelly@rdsor.ro> To: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> Cc: Warner Losh <imp@bsdimp.com>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Devd / devmatch(8) -- netif race 12-RC1 Message-ID: <798C848D-5F32-4BF9-87E0-ADD4F9B743AD@rdsor.ro> In-Reply-To: <C019CAB7-20E7-4635-8AF5-8636237DDF48@lists.zabbadoz.net> References: <A4074445-D442-4244-8E73-7F34DAA5E3FD@rdsor.ro> <CANCZdfqWq%2B2Lc1UrTdb8Fc9XkyL8cpaqAmS-Sh-vev_ZOQesDQ@mail.gmail.com> <873d8841484925a35cf8c751790659c1@rdsor.ro> <C019CAB7-20E7-4635-8AF5-8636237DDF48@lists.zabbadoz.net>
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wireless lagg initialization is broken in this scenario, all-right. The init/rc system as it is now can’t cope easily with a modern asynchronous initialization sequence. Sure you could probably find an order which works, only to find yourself in trouble next time you want add some modern functionality . It shows it’s age @Warner Could you tell me please if devmatcher supports taking over a PCI device which is attached by a generic driver already ? vga attaching modern GPUs comes to mind . Dan > On Nov 20, 2018, at 15:26, Bjoern A. Zeeb <bzeeb-lists@lists.zabbadoz.net> wrote: > > On 20 Nov 2018, at 8:17, dan_partelly@rdsor.ro wrote: > >>>> No, that's not what's happening. wlan0 isn't racing anything, because it's no longer listed in ifconfig >> >> >> But when is created lagg0 ? Acording rc output on screen , creation of cloned interface lagg0 takes place before wlan0 is created. Then this means SIOCLAGPORT will fail with Invalid argument. Also lagg0 is started at netif time as far as I know. >> Firmware for the wireless card is loaded later, and only even later wlan0 is created. So the way I see it, lagg0 cannot have a wlan0 port until firmware for the card is loaded and wlan0 is created, which takes place way after the system attempts to configure lagg0 ? Am I missing something ? > > lagg might be a problem. > > > While we are on the topic: I also noticed on a fixed 10G card that the network startup it went through strangely wasn’t the same as it was when the driver was loaded and service netif start was called again. I have not had time to debug that any further. > > >> Also, can you please tell me what happens that devmatch tries to load uhidd multiple times ? > > That’s probably similar to https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=232782 ?help
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