snmp_pdu
struct ber_element *snmp_pdu(enum snmp_request, int32_t, int32_t, int32_t,
snmp_pdu(request, requestid, error, index, varbindlist, nvarbind));
snmpv3_encode(s, &ber, hd, params, snmp_pdu(request, requestid, error,
pdu = snmp_pdu(REQUEST_GET, 0, 0, 0, NULL, 0);