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Re: iwn 5100AGN for netbsd-5

On 12/12/2010 6:24 AM, Manuel Bouyer wrote:
On Sat, Dec 11, 2010 at 04:35:35PM -0600, Chuck Zmudzinski wrote:
I saw in the mailing list archives a few weeks back that iwn(4) for
5100/5300 AGN devices was working in netbsd-current but hasn't been
ported to netbsd-5 yet.  I decided to try and get it working in
netbsd-5 with minimal changes to the netbsd-5 kernel sources.

I got it working to the point I could run 'dhcp iwn0' and get a
dhcp lease, but pinging the router gave me this error from arp:

arpresolve: can't allocate llinfo on iwn0 for

See the copy of my message to netbsd-users about how my patch to netbsd-5
kernel source was constructed.

If anyone can direct me about how to fix this error in arp, let me
know. Would it require a lot of work, or a simple fix?
I think it's a difference in network stack between -current and netbsd-5,
most probably a difference in the way a network driver interfaces with
You may be missing a call to a function which is not present anymore in
-current. You should probably compare what your driver is doing in
initialisation and ioctl functions with another, working ethernet driver.

It looks like the netbsd-5 arp routines cannot get information from the driver about the ethernet addresses of the devices on the wireless network but -current can. From my tests, the networking subsytem can figure out what the gateway's IP address is,
but not its ethernet address.

Well so far I noticed some functions missing in the -current driver I am using as compared to the netbsd-5 driver - notably a function called iwn_alloc_shared was missing, so I added it but still had the same error from arpresolve and also from arplookup in if_arp.c. I also tried renaming two functions function whose names were changed between -5 and -current but no success - always the arpresolve and an arplookup error. I can't figure out which call(s) might be missing in the -current driver that netbsd-5 needs for resolving IP
addresses to ethernet addresses. Any hints on this? Thanks.

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