Re: Writing raw ax25 packets -- "no buffer space available"

[Cathryn Mataga <cathrynm@junglevision.com>]

Cathryn Mataga wrote:

Okay, sorry, never mind.  I restarted the Linux machine and it works 
now.  I think
my Kam ports got confused due to some other unrelated issue. 

Right now it looks like sending RAW ax25 is working on all my RF ports.

> I'm working on a little program that needs to out put raw ax25. And it's
> working somewhat, though not completely. Basically the code uses
> socket(PF_PACKET, SOCK_RAW, IPPROTO_AX25);. It builds
> a kiss header of one byte, and then fills in a packet. I bind( and then
> send(. That's basically the whole thing.
>
> (For the curious I thought it'd be fun to print out messages on
> my TS2000 using the CLuster feature, but this needs 'connected
> packets' on DX Cluster format, and I seem to need to go raw for this.
> I do have this working and I have it setup now so I type a comand line
> and a message pops up on the LCD on the TS2000.)
>
> Here's the deal. I have a sound modem setup and also a PK232 in
> KISS which I can test hooked to the system. These both work fine.
>
> But, I also have a 'KPC-9612' with 3 ports plugged in , and when I send
> raw packets to this, I get a "No buffer space available" error. This is
> on the first and only send(
>
> I'm using /sbin/mkiss to plug create the three ports from one serial
> port, and I was thinking it's somehow related to this. Though I'm
> not really sure. I guess SOCK_RAW would just send data to
> mkiss just like the other ports. It seems like it wouldn't be a problem.
>
> In the kernel, I only see one ENOBUFS in ax25 and that's in AF_AX25
> after a kmalloc, but this doesn't make any sense. It must be coming from
> somewhere else I think. The issue is not a 'flakey' at all here, and it
> just doesn't work on mkiss. It shows an error consistently. The send(
> call gets ENOBUFS returned to it, but 'listen' never sees anything 
> going out
> at all.
>
> Anyway, I'm posing this in case someone else has information on
> how to write raw AX25. I didn't really find what looked like a recent
> simple example of this in any of the AX5 libraries or tools.
>
> Thank you.
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