Date: Mon, 24 Nov 2014 15:12:34 +0100 From: Bastian <bastian-bsd-ml@t6l.de> To: freebsd-net@freebsd.org Subject: iwn fails to scan on E6330 Message-ID: <20141124141234.GG30752@tweddell.de>
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Hi all,
I have to say, the BSD world is quite new to me. It peeked my interest
long time ago, but a week a ago I was brave enough to give it a try on a
real physical box. A Latitude E6330.
In general the installation was straight forward. For now I just face
troubles with GPT (another topic) and iwn.
Here is what my machine has:
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root@zam709:~ # pciconf -lv iwn0
iwn0@pci0:2:0:0: class=0x028000 card=0x13218086 chip=0x00828086 rev=0x34 hdr=0x00
vendor = 'Intel Corporation'
device = 'Centrino Advanced-N 6205 [Taylor Peak]'
class = network
root@zam709 ~ 0
59 # kldstat -v | grep iwn
158 pci/iwn
17 1 0xffffffff820cc000 52db4 iwn1000fw.ko (/boot/kernel/iwn1000fw.ko)
509 iwn1000fw_fw
18 1 0xffffffff8211f000 ad28f iwn2030fw.ko (/boot/kernel/iwn2030fw.ko)
510 iwn2030fw_fw
19 1 0xffffffff821cd000 2e58a iwn4965fw.ko (/boot/kernel/iwn4965fw.ko)
511 iwn4965fw_fw
20 1 0xffffffff821fc000 53a21 iwn5000fw.ko (/boot/kernel/iwn5000fw.ko)
512 iwn5000fw_fw
21 1 0xffffffff82250000 52d42 iwn5150fw.ko (/boot/kernel/iwn5150fw.ko)
513 iwn5150fw_fw
22 1 0xffffffff822a3000 6f71e iwn6000fw.ko (/boot/kernel/iwn6000fw.ko)
514 iwn6000fw_fw
23 1 0xffffffff82313000 a5d05 iwn6000g2afw.ko (/boot/kernel/iwn6000g2afw.ko)
515 iwn6000g2afw_fw
24 1 0xffffffff823b9000 70fc2 iwn6000g2bfw.ko (/boot/kernel/iwn6000g2bfw.ko)
516 iwn6000g2bfw_fw
25 1 0xffffffff8242a000 73265 iwn6050fw.ko (/boot/kernel/iwn6050fw.ko)
root@zam709:~ # ifconfig iwn0
iwn0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 2290
ether 6c:88:14:18:fb:d0
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
status: no carrier
root@zam709:~ # time ifconfig iwn0 up scan
ifconfig: unable to get scan results
0.007u 0.028s 0:00.03 66.6% 370+400k 2+0io 0pf+0w
root@zam709:~ # uname -a
FreeBSD zam709 10.1-RELEASE FreeBSD 10.1-RELEASE #0 r274401: Tue Nov 11 21:02:49 UTC 2014
root@releng1.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64
-----
>From the logs above you can see that the kernel has a built in module
for iwn and the firmwares are loaded. The kernel sees the interface and
I can bring it up. But when trying to scan for available BSSs, the scan
command return immediately without success (exit 1).
Right now I suspect the firmware is somehow wrongly configured. But I
cannot find any logs about firmwares in the logs.
Q: What is the proper procedure to debug a startup of the iwn module?
Coming from the linux administration, I failed to gain knowledge how the
firmware is handeled. I tried to enable different sets of firmware
which were to enable just single firmware and up to enable all availabel
firmwares. I used kldload/unload for this.
Q: When are the firmwares getting effectively used? Meaning, how does
dynamically loading/unloading a firmware change the bahaviour of the
module?
or
When does a module expect a firmware to be available and does it
accepts a runtime cahnge of the firmware?
Q: As the iwn module is compiled into the kernel, how can I restart
this inorder it might read in the firmware again?
Other questions I have:
Q: Which is the poper firmware for my wireless device?
Many thanks,
--
Bastian
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