RE: table.c helper return code

Hi Rob,

Thanks for your reply.
Raised the bug report and following is the link to it.
http://sourceforge.net/tracker/index.php?func=detail&aid=1586988&group_i
d=12694&atid=112694


Thanks & Regards,
Suresh.


-----Original Message-----
From: Robert Story [mailto:[email protected]] 
Sent: Saturday, October 28, 2006 2:38 AM
To: Pamidipati Suresh-G20238
Cc: [email protected]
Subject: Re: table.c helper return code


On Fri, 27 Oct 2006 21:37:38 +0800 Pamidipati wrote:
PSG> But we noticed a problem if there are lot of tables in sequence 
PSG> which don't have rows in them, and a get-next is issued on the 
PSG> first table. Following is the description of the same.
PSG> 
PSG> We have 600 tables in lexicographical order in the MIBs owned by 
PSG> subagent and don't have rows populated in them. Table-601 has rows 
PSG> in it. We gave snmp get-next on Table1 OID. SNMPD has sent the 
PSG> Agentx get-next request to Subagent on the Table1 OID with END OID 
PSG> scoped to Table2 OID. Subagent called the Table1 handler function. 
PSG> As there are no rows in the table, it returned SNMP_ERR_NOERROR to 
PSG> the library and this caused Subagent to call the Table2 handler. 
PSG> Subagent called all the Table handlers in the sequence and 
PSG> table-601 handler gave the response. Now Subagent, checked that 
PSG> Table-601 OID is not in the scope of END Table2 OID in the request 
PSG> and returned SNMP_ENDOFMIBVIEW to SNMPD.

This confirms a suspicion I have had for a while. I think that this is a
bug in the sub-agent processing. What I'm guessing is that the test for
scope is only done when an answer is found. If the test was also done
when moving between handlers, the ENDOFMIBVIEW would be returned
immediately after each table.

PSG> Please let me know if there is any error code, instead of 
PSG> SNMP_ERR_NOERROR, that subagent can return to the library for 
PSG> get-next requests on tables having no rows, which avoids this loop 
PSG> of all the tables at Subagent.

Nope, it will have to be fixed in the agent code. Can you please file a
bug report with the information you provided in your original message?

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