Well sure, but we have devd in FreeBSD for some time. It actually does
handle the hot plug (sort-of...) I made a custom devd hook for it.
The actual problem is that if I boot FreeBSD with the device plugged in
then devd never runs my hooks.
That and I'm not sure if devd is even the right place... to put my
hooks, but it sure seems like it... except for the "doesn't show up at
boot".
Also really interested in knowing how the heck Linux figures out the IP
address?
Is there some usb ethernet spec for autoconfiguring???
-Alfred
On 11/28/14, 5:05 PM, Jesus Monroy wrote:
Alfred,
I usually don't get the USB mailing list in my inbox. However,
for some reason I fished this out of spam. Indicating to me
I should answer this.
THE ANSWER:
Hot swapping has never been a strong point for BSD.
Basically they think, "hot swapping" means, flip a
mechanical switch, remove the device. They DON'T
think like a USB device; which is "plug in and pull"
- at will.
In the Linux world, there is an army of people that
attack problems like this 'ad hoc'. The BSD
community is far too formal to get it done in
any reasonable time frame.
In the Linux world, there are a host of "post-boot"
solutions, such as systemd, busd, etc. They all
generally trap an event, be it real (such as an IRQ),
network, program, or user. This is usually
leverage by /proc, dmesg or similar.
Hope this helps.
FWIW: I'm living in El Paso Texas for the next 6 months.
Best of Luck,
Jesse
--------------------------------------------
On Fri, 11/28/14, Alfred Perlstein <[email protected]> wrote:
Subject: Question on ue devices autoconfigure versus Linux.
To: [email protected]
Cc: "Hans Petter Selasky" <[email protected]>
Date: Friday, November 28, 2014, 5:37 PM
Hello,
We have a widget here, basically a "beagleclone" that runs
Linux.
When I plug it into an ubuntu host it shows up as:
usb0 Link encap:Ethernet HWaddr
8a:18:9f:c4:a9:02
inet
addr:169.254.99.129 Bcast:169.254.99.131
Mask:255.255.255.252
inet6 addr:
fe80::8818:9fff:fec4:a902/64 Scope:Link
UP BROADCAST
RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3
errors:0 dropped:0 overruns:0 frame:0
TX packets:56
errors:0 dropped:0 overruns:0 carrier:0
collisions:0
txqueuelen:1000
RX bytes:626
(626.0 B) TX bytes:10727 (10.7 KB)
Requires no special setup.
However on a FreeBSD machine I need to do this:
USBDEV=$(shell dmesg | grep '^ugen.*LCD' | sed -E
's/^ugen([0-9]+\.[0-9]+).*/\1/')
# target to make the device show up on freebsd.
config-freebsd:
usbconfig -d
$(USBDEV) set_config 1
sleep 5
ifconfig ue0 inet
169.254.99.129/24 up
Basically I need to grep dmesg for "ugen" and the string
"LCD", then I
need to run:
usbconfig -d 3.3 set_config 1 # (3.3 comes from
dmesg)
then..
ifconfig ue0 inet 169.254.99.129/24 up
Any idea why Linux can do this all automagically but FreeBSD
needs
manual help?
I even tried putting some stuff into devd.conf, however devd
doesn't
seem to the right thing if the device is plugged in at boot
time. This
is because devd only seems to know when a device is plugged
in, however
it doesn't trigger events when the device has been present
since boot.
Any tips on this? We can get around this with some
custom rc scripts,
but I was just wondering if FreeBSD could make it more plug
and play.
thanks,
-Alfred
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