system call used to populate ifSpeed on Linux

[siddesh.rajappa]

Hi,   We are using net-snmp 5.2.1 on Linux. The question I have here is, what is the system call net-snmp uses on Linux to populate the ifSpeed in ifTable? We are using net-snmp for wireless device and for wireless interface the ifSpeed is 0 most the times. Because of this, Manager is getting linkup and linkDown traps frequently even though the interface is not down!   Thanks a lot for your help in advance.   Regards, Siddesh