How to implement Counter64

[Vinh N. <vi...@sp...>]

Hi all,

Does anyone know how to implement a Counter64 variable (in a subagent) 
using net-snmp?
The mib2c code automatically sets the type to long (wrong, 32 bit 
integer), but together with a note saying that I need to check the type.

 From the source code, there seems to be a special struct U64 but there 
is no examples or tut that mentions this so I'm not sure how to use it. 
Could someone give me a pointer or let me know of any existing examples?

Also, if instead of using that U64 type, I store my data as an "unsigned 
long long" (64bit) in C++, and on retrieving data for snmp GET, use 
pointer to this variable + set type to ASN_COUNTER64, would it work?
I mean something like this (C++ code)

//store data in 64 bit integer
static unsigned long long myvar;

//give this data to handler function on GET request
snmp_set_var_typed_value(requests->requestvb, ASN_COUNTER64, (u_char *) 
& myvar, sizeof(myval));


Lots of thanks,
Vinh