Dave - I tried to use the mib2c config file you suggested. It generates a few
bugs in the c file that are pretty easy to see, others are a little more
confusing.
For example, it generates the following function definition:
/*
* create a new row in the table
*/
struct jtrsMdlNeighborNodeTable_entry *
jtrsMdlNeighborNodeTable_createEntry(netsnmp_container * container,,
long jtrsMdlChannelId,
long jtrsNeighborNodeId)
Note the two commas in the argument list.
Inside the function, it generates the lines:
entry->oid_index.len = XXX;
entry->oid_index.oids = YYY;
Any ideas what XXX and YYY are supposed to be? .len is supposed to be a
u_short
and YYY is a u_long *.
It also generates this block with a reference to a function:
netsnmp_container_table_extract()
case MODE_SET_UNDO:
for (request = requests; request; request = request->next) {
container = netsnmp_container_table_extract(request);
table_entry = (struct jtrsMdlNeighborNodeTable_entry *)
netsnmp_container_table_extract_context(request);
table_info = netsnmp_extract_table_info(request);
I can't find this defined, but I did find:
netsnmp_container_table_extract_context() - Is this what it was supposed
to be calling? It doesn't seem to matter because *container is defined locally
in this function and isn't used after the above call.
In the initialize_table_jtrsMdlNeighborNodeTable function, I see a comment that
says:
// Initialise the contents of the table here
I'm assuming I'll add my code here to set initial values for the table members.
It's
a little unclear about how to do this. Is the table data stored in the
netsnmp_table_registration_info *table_info struct ptr? I looked but
didn't see any example of how to do this.
Thanks for the help,
Mark
Thanks,
Mark
Mark Riehl
Agile Communications, Inc.
Email: [EMAIL PROTECTED]
Office: (732) 528-9305
Fax: (732) 528-9308
Cell: (732) 996-7630
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of Dave Shield
Sent: Thu 5/10/2007 11:04 AM
To: Mark Riehl
Cc: [email protected]
Subject: Re: Extending an Agent
On 09/05/07, Mark Riehl <[EMAIL PROTECTED]> wrote:
> Is the MfD the best config to use for this?
That probably depends who you ask.
I dislike the MfD framework myself, but I try not to let my personal
opinions colour the advice I give on the list. Robert has put a lot
of work into this framework, and although I disagree with many of
the design decisions (not to mention the amount of code generated!),
there's a lot of good stuff there.
My personal preference for implementing MIBs tends to be the
mib2c.container.conf framework.
But if all you want is a simple test module, and aren't really interested
in the internals, then you might like to take a look at the 'create-dataset'
template.
This handles all of the table data internally, so you should be able
to populate and query it via SNMP queries, with minimal coding needed.
Just have a look through the init routine, and make sure the appropriate
flags are set to allow row creation, etc.
I wouldn't tend to use this for a "real" MIB module, monitoring some
underlying subsystem. But it sounds ideal for your needs here.
Dave
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