Re: Packet Transmission on AIX 5.x

[Guy Harris <guy () alum mit edu>]

Naveen N Rao wrote:

> I am trying to get packet transmission working using pcap_inject() on AIX
> 5.3. I haven't had any success using BPF and DLPI. With BPF, I get "send:
> Error 0"

That means that the write() done to the BPF device returned -1 but 
didn't set "errno" to a valid error value.

Given all the other ways in which AIX's BPF is broken, I suppose that 
brokenness shouldn't be a surprise.

That could either mean that the transmission worked but -1 was bogusly 
returned, or that the transmission failed but AIX's BPF code didn't 
bother indicating why.  Does the packet appear on the network?  If so, 
it might be that AIX's BPF doesn't support sending packets.

>  while DLPI just says that this is an unsupported OS.

We haven't written any code to support that.  DLPI has other problems if 
you try to capture packets with it, so it's not the preferred mechanism. 
 It is, however, documented on AIX, as far as I know, unlike AIX's BPF; 
you might want to try implementing packet transmission using DLPI.
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