Problem using adhoc mode using the iwn driver.

[Eddie Leisure]

Followed the instructions per 'man iwn'
I'm getting "ifconfig: SIOCIFCREATE2: Operation not supported" when I
try to create the wlan0 device in adhoc mode.


Environment specific information:
uname -a:
FreeBSD spectre.mss.iss.net 8.0-BETA3 FreeBSD 8.0-BETA3 #0: Sat Aug 22
02:36:50 UTC 2009    
root@...:/usr/obj/usr/src/sys/GENERIC  i386

pciconf:
iwn0@pci0:3:0:0:    class=0x028000 card=0x10108086 chip=0x42308086
rev=0x61 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Intel Wireless WiFi Link 4965AGN (Intel 4965AGN)'
    class      = network
    bar   [10] = type Memory, range 64, base 0xdf2fe000, size 8192, enabled
    cap 01[c8] = powerspec 3  supports D0 D3  current D0
    cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
    cap 10[e0] = PCI-Express 1 endpoint max data 128(128) link x1(x1)

This is what I've done:

spectre# ifconfig iwn0
iwn0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 2290
    ether 00:21:5c:15:74:6d
    media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
    status: no carrier
spectre# ifconfig wlan create wlandev iwn0 wlanmode adhoc ssid aenet
ifconfig: SIOCIFCREATE2: Operation not supported

If I don't use the 'wlanmode adhoc' option, then it works, but doesn't
really do what I want.

spectre# ifconfig wlan create wlandev iwn0 ssid aenet
wlan0
spectre# ifconfig wlan0 up
spectre# ifconfig wlan0
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
    ether 00:21:5c:15:74:6d
    inet 192.168.2.25 netmask 0xffffff00 broadcast 192.168.2.255
    media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
    status: no carrier
    ssid aenet channel 36 (5180 Mhz 11a)
    country US authmode OPEN privacy OFF txpower 15 bmiss 10 mcastrate 6
    mgmtrate 6 scanvalid 60 wme bintval 0

At this point, I can give it an IP address, etc... but it will say no
carrier.

This is my first time setting up an adhoc network, but what I can find
from my searches is that this _should_ work...  I feel like I may be
missing something simple though.

Any insight would be appreciated.

Ed Leisure


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[Paul B Mahol]

On 9/11/09, Eddie Leisure <eddie@...> wrote:
> Followed the instructions per 'man iwn'
> I'm getting "ifconfig: SIOCIFCREATE2: Operation not supported" when I
> try to create the wlan0 device in adhoc mode.

Look at iwn source code, IBSS cap is commented out.
Either this issue should be addressed or man page should be updated.

--
Paul
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[Eddie Leisure]

Paul B. Mahol wrote:
> Look at iwn source code, IBSS cap is commented out.
> Either this issue should be addressed or man page should be updated.
Thanks for your help here, it never occurred to me to check the source,
I'm still a bit of a newbie at this.

Deleted the #if 0...#endif block around the code in if_iwn.c and recompiled.
Running it form the console this time and I can see the error "iwn0:
IBSS mode not supported" - so it still doesn't seem to be working.  I
checked over the rest of the source and I don't see anything obvious in
the header files either.

I think I'm dancing around my limits here, I think I'll just have to
find a different way to connect this machine, or just get a usb adapter.

Just to make sure I'm on track here, i did a kldunload if_iwn, then ran
make, then did a kldload if_iwn - this is the first time for me to
recompile a kernel module so I want to make sure I'm not messing this up.

It somewhat makes sense for it not to work though, I assume theres a
reason it was commented out to begin with.

Eddie
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[Sam Leffler-2]

Eddie Leisure wrote:

> Paul B. Mahol wrote:
>> Look at iwn source code, IBSS cap is commented out.
>> Either this issue should be addressed or man page should be updated.
> Thanks for your help here, it never occurred to me to check the source,
> I'm still a bit of a newbie at this.
>
> Deleted the #if 0...#endif block around the code in if_iwn.c and
> recompiled.
> Running it form the console this time and I can see the error "iwn0:
> IBSS mode not supported" - so it still doesn't seem to be working.  I
> checked over the rest of the source and I don't see anything obvious in
> the header files either.
>
> I think I'm dancing around my limits here, I think I'll just have to
> find a different way to connect this machine, or just get a usb adapter.
>
> Just to make sure I'm on track here, i did a kldunload if_iwn, then ran
> make, then did a kldload if_iwn - this is the first time for me to
> recompile a kernel module so I want to make sure I'm not messing this up.
>
> It somewhat makes sense for it not to work though, I assume theres a
> reason it was commented out to begin with.

iwn's ibss suport didn't work when I last tried it so I removed the
capability.  Someone needs to take responsibility for the driver; there
are many outstanding issues with the code in the tree (e.g. lack of
support for the newer (but now old) parts).

        Sam
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[Scott Lambert]

On Fri, Sep 11, 2009 at 07:37:35PM -0700, Sam Leffler wrote:

> Eddie Leisure wrote:
> > Paul B. Mahol wrote:
> >> Look at iwn source code, IBSS cap is commented out.
> >> Either this issue should be addressed or man page should be updated.
> > Thanks for your help here, it never occurred to me to check the source,
> > I'm still a bit of a newbie at this.
> >
> > Deleted the #if 0...#endif block around the code in if_iwn.c and
> > recompiled.
> > Running it form the console this time and I can see the error "iwn0:
> > IBSS mode not supported" - so it still doesn't seem to be working.  I
> > checked over the rest of the source and I don't see anything obvious in
> > the header files either.
>
> iwn's ibss suport didn't work when I last tried it so I removed the
> capability.  Someone needs to take responsibility for the driver; there
> are many outstanding issues with the code in the tree (e.g. lack of
> support for the newer (but now old) parts).

If someone gets interested in playing with iwn, it would be great if
they could work on resume.  FreeBSD 8 is *wonderful* for S3 suspend and
resume.  I really appreciate the work which has been done to get it to
work.

The iwn driver is my only issue.  I have put up the verbose dmesg for
boot and resume if anyone is interested.

http://www.lambertfam.org/~lambert/laptop/TravelMate_5720-6911/

After resume the ifconfig shows "associated" on iwn0 and "no carrier" on
wlan0.


--
Scott Lambert                    KC5MLE                       Unix SysAdmin
lambert@...

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[Sam Leffler]

Scott Lambert wrote:

> On Fri, Sep 11, 2009 at 07:37:35PM -0700, Sam Leffler wrote:
>> Eddie Leisure wrote:
>>> Paul B. Mahol wrote:
>>>> Look at iwn source code, IBSS cap is commented out.
>>>> Either this issue should be addressed or man page should be updated.
>>> Thanks for your help here, it never occurred to me to check the source,
>>> I'm still a bit of a newbie at this.
>>>
>>> Deleted the #if 0...#endif block around the code in if_iwn.c and
>>> recompiled.
>>> Running it form the console this time and I can see the error "iwn0:
>>> IBSS mode not supported" - so it still doesn't seem to be working.  I
>>> checked over the rest of the source and I don't see anything obvious in
>>> the header files either.
>> iwn's ibss suport didn't work when I last tried it so I removed the
>> capability.  Someone needs to take responsibility for the driver; there
>> are many outstanding issues with the code in the tree (e.g. lack of
>> support for the newer (but now old) parts).
>
> If someone gets interested in playing with iwn, it would be great if
> they could work on resume.  FreeBSD 8 is *wonderful* for S3 suspend and
> resume.  I really appreciate the work which has been done to get it to
> work.
>
> The iwn driver is my only issue.  I have put up the verbose dmesg for
> boot and resume if anyone is interested.
>
> http://www.lambertfam.org/~lambert/laptop/TravelMate_5720-6911/
>
> After resume the ifconfig shows "associated" on iwn0 and "no carrier" on
> wlan0.
>
>

There is suspend/resume support in net80211; probably just requires
hooking up to it.  OTOH if you want to do a good job (i.e. resume
quickly) then take a look at what ath does.

        Sam

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