Re: [Freeipmi-devel] Using libfreeipmi interface

[Albert Chu]

Hi Andrew,

Thanks for trying to support libfreeipmi with ipmiutil.  I think a good
place to start off for how to use the LAN interface would be
libfreeipmi/src/ipmi-ping.c and ipmiping/src/ipmiping.c. The code in
ipmi-ping.c is a wrapper for a generic send/select/read loop that is
common to ipmiping and rmcpping.  The code in ipmiping.c contains the
code to construct and parse packets.  You should be able to see how
packets are constructed, sent, read packets with arbitrary buffer sizes.
and parsed/checked.

For KCS, the construction/parsing of packets is similar.  You just need
to call ipmi_kcs_cmd() or ipmi_kcs_cmd_interruptible() instead of
ipmi_lan_sendto() and ipmi_lan_recvfrom().  I'm not sure of situations
where you may get a response from the BMC of arbitrary size when working
in-band.  Presumably everything will be bounded by some length, and we
have accounted for those varying lengths in the templates
(fiid_template_t types).  Is there is a situation that you are
encountering this issue?  I suppose we could create a helper function
that allocates space based on an integer parameter rather than a
template parameter. AB?? Ian??

I'm not sure about AB's schedule for putting out a hackers guide.  I
will put libfreeipmi examples onto our collective todo list.

Al

--
Albert Chu
address@hidden
Lawrence Livermore National Laboratory

----- Original Message -----
From: "Cress, Andrew R" <address@hidden>
Date: Monday, October 25, 2004 1:34 pm
Subject: [Freeipmi-devel] Using libfreeipmi interface

> Hi,
> 
> I have some IPMI Management Utilities which currently support 3 
> types of
> IPMI drivers, and I'd like to add support for libfreeipmi also.  These
> utilities have the IPMI commands already composed.   See
> http://ipmiutil.sf.net
> I did download version 0.1.0 and build it on my system, and bmc-info,
> bmcpower, and bmcping seem to work ok.  
> 
> Looking at the freeipmi-hackers-intro.pdf, it looks like I need more
> information about the LAN interface and KCS interface routines.  The
> other documents seem to aimed at users, and not much documentation 
> aboutthe developers' API yet.  I tried to distill out what I needed 
> from the
> sample apps, but I'm having trouble in the general case passing a
> pre-formed IPMI command, with a receive buffer that is big enough to
> handle whatever the response might be, then getting the actual 
> receivedbyte count.  The sample routines are targeted at certain 
> given commands
> and the known return length for each.  Maybe what I need is a
> 'pass-through' template, or something (?).  
> 
> What would you suggest?
> 
> Andy
> 
> ---
> Andy Cress                      803-216-2356  fax:803-216-2178
> Senior Software Engineer    address@hidden
> Intel Corporation, Columbia Design Center, CBA1
> 100 Center Point Cir., Suite 200, Columbia, SC 29210
> http://ipmiutil.sf.net   http://scsirastools.sf.net
> BTW, I speak for myself, not for Intel Corp.
> "Do not merely look out for your own personal interests, but also for
> the interests of others." Phil 2:4
> 
> 
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