Below is my mib2c generated code. I am compiling it as subagent... but it is
not showing any kind of values. What should be my next step to implement it
? from where can I get data? Please help me to implement it.
snmpwalk -c public -v 2c localhost 1.3.6.1.4.1.21068
POOL-MIB::elite = No Such Object available on this agent at this OID
Thansks in advance.
Code :
/*
* Note: this file originally auto-generated by mib2c using
* $
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "pool.h"
/** Initializes the pool module */
void
init_pool(void)
{
/* here we initialize all the tables we're planning on supporting */
initialize_table_poolTable();
}
//Determine the first/last column names
/** Initialize the poolTable table by defining its contents and how it's
structured */
void
initialize_table_poolTable(void)
{
const oid poolTable_oid[] = {1,3,6,1,4,1,21068,4,2};
const size_t poolTable_oid_len = OID_LENGTH(poolTable_oid);
netsnmp_handler_registration *reg;
netsnmp_iterator_info *iinfo;
netsnmp_table_registration_info *table_info;
DEBUGMSGTL(("pool:init", "initializing table poolTable\n"));
reg = netsnmp_create_handler_registration(
"poolTable", poolTable_handler,
poolTable_oid, poolTable_oid_len,
HANDLER_CAN_RONLY
);
table_info = SNMP_MALLOC_TYPEDEF( netsnmp_table_registration_info );
netsnmp_table_helper_add_indexes(table_info,
ASN_INTEGER, /* index: ifIndex */
0);
table_info->min_column = 1;
table_info->max_column = COLUMN_POOLINOCTETS;
iinfo = SNMP_MALLOC_TYPEDEF( netsnmp_iterator_info );
iinfo->get_first_data_point = poolTable_get_first_data_point;
iinfo->get_next_data_point = poolTable_get_next_data_point;
iinfo->table_reginfo = table_info;
netsnmp_register_table_iterator( reg, iinfo );
/* Initialise the contents of the table here */
}
/* Typical data structure for a row entry */
struct poolTable_entry {
/* Index values */
long ifIndex;
/* Column values */
u_long poolInOctets;
/* Illustrate using a simple linked list */
int valid;
struct poolTable_entry *next;
};
struct poolTable_entry *poolTable_head;
/* create a new row in the (unsorted) table */
struct poolTable_entry *
poolTable_createEntry(
long ifIndex
) {
struct poolTable_entry *entry;
entry = SNMP_MALLOC_TYPEDEF(struct poolTable_entry);
if (!entry)
return NULL;
entry->ifIndex = ifIndex;
entry->next = poolTable_head;
poolTable_head = entry;
return entry;
}
/* remove a row from the table */
void
poolTable_removeEntry( struct poolTable_entry *entry ) {
struct poolTable_entry *ptr, *prev;
if (!entry)
return; /* Nothing to remove */
for ( ptr = poolTable_head, prev = NULL;
ptr != NULL;
prev = ptr, ptr = ptr->next ) {
if ( ptr == entry )
break;
}
if ( !ptr )
return; /* Can't find it */
if ( prev == NULL )
poolTable_head = ptr->next;
else
prev->next = ptr->next;
SNMP_FREE( entry ); /* XXX - release any other internal resources */
}
/* Example iterator hook routines - using 'get_next' to do most of the work
*/
netsnmp_variable_list *
poolTable_get_first_data_point(void **my_loop_context,
void **my_data_context,
netsnmp_variable_list *put_index_data,
netsnmp_iterator_info *mydata)
{
*my_loop_context = poolTable_head;
return poolTable_get_next_data_point(my_loop_context, my_data_context,
put_index_data, mydata );
}
netsnmp_variable_list *
poolTable_get_next_data_point(void **my_loop_context,
void **my_data_context,
netsnmp_variable_list *put_index_data,
netsnmp_iterator_info *mydata)
{
struct poolTable_entry *entry = (struct poolTable_entry
*)*my_loop_context;
netsnmp_variable_list *idx = put_index_data;
if ( entry ) {
snmp_set_var_typed_integer( idx, ASN_INTEGER, entry->ifIndex );
idx = idx->next_variable;
*my_data_context = (void *)entry;
*my_loop_context = (void *)entry->next;
return put_index_data;
} else {
return NULL;
}
}
/** handles requests for the poolTable table */
int
poolTable_handler(
netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests) {
netsnmp_request_info *request;
netsnmp_table_request_info *table_info;
struct poolTable_entry *table_entry;
DEBUGMSGTL(("pool:handler", "Processing request (%d)\n",
reqinfo->mode));
switch (reqinfo->mode) {
/*
* Read-support (also covers GetNext requests)
*/
case MODE_GET:
for (request=requests; request; request=request->next) {
table_entry = (struct poolTable_entry *)
netsnmp_extract_iterator_context(request);
table_info = netsnmp_extract_table_info( request);
switch (table_info->colnum) {
case COLUMN_POOLINOCTETS:
if ( !table_entry ) {
netsnmp_set_request_error(reqinfo, request,
SNMP_NOSUCHINSTANCE);
continue;
}
snmp_set_var_typed_integer( request->requestvb, ASN_COUNTER,
table_entry->poolInOctets);
break;
default:
netsnmp_set_request_error(reqinfo, request,
SNMP_NOSUCHOBJECT);
break;
}
}
break;
}
return SNMP_ERR_NOERROR;
}
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