Hi,
I implemented a table using iterator, and I can do snmpwalk on the table. But
snmpget gave the Index out of range error. Table index starts from 1. Here is
related the code piece, can anyone point out where I did wrong?
int myTable_load(netsnmp_cache * cache, void *vmagic)
{
struct myTable_entry *this;
u_long i;
int state = 1;
for (i = 0; i < num_entries; i++) {
this = SNMP_MALLOC_TYPEDEF(struct myTable_entry);
if (this == NULL) {
return SNMP_ERR_GENERR;
}
/* MIB index should start from 1 */
this->Index = i+1;
this->status = state;
this->next = myTable_head;
myTable_head = this;
}
return SNMP_ERR_NOERROR;
}
void myTable_free(netsnmp_cache * cache, void *vmagic)
{
struct myTable_entry *this, *that;
for (this = myTable_head; this; this = that) {
that = this->next;
SNMP_FREE(this);
}
myTable_head = NULL;
}
netsnmp_variable_list
*myTable_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 = myTable_head;
*my_data_context = myTable_head;
snmp_set_var_typed_value(put_index_data, ASN_UNSIGNED ,
(u_char *)&(myTable_head->Index),
sizeof(myTable_head->Index));
return myTable_get_next_data_point(my_loop_context,
my_data_context,
put_index_data,
mydata);
}
netsnmp_variable_list *
myTable_get_next_data_point(void **my_loop_context,
void **my_data_context,
netsnmp_variable_list * put_index_data,
netsnmp_iterator_info *mydata)
{
struct myTable_entry *entry =
(struct myTable_entry *) *my_loop_context;
netsnmp_variable_list *idx = put_index_data;
if (entry) {
snmp_set_var_typed_value(idx, ASN_UNSIGNED , (u_char
*)&(entry->Index), sizeof(entry->Index));
idx = idx->next_variable;
*my_data_context = (void *) entry;
*my_loop_context = (void *) entry->next;
return put_index_data;
} else {
return NULL;
}
}
int myTable_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 myTable_entry *table_entry;
switch (reqinfo->mode) {
/*
* SNMP GET support (also covers GetNext requests)
*/
case MODE_GET:
for (request = requests; request; request = request->next) {
table_entry = (struct myTable_entry *)
netsnmp_extract_iterator_context(request);
table_info = netsnmp_extract_table_info(request);
switch (table_info->colnum) {
case COLUMN_STATUS:
…………….
Thanks
From: b...@live.com
To: d.t.shi...@liverpool.ac.uk
CC: net-snmp-users@lists.sourceforge.net
Subject: Strange behavior on linkUpDownNotifications
Date: Mon, 29 Mar 2010 11:39:35 -0400
Hi,
I finally can receive link up/down traps. But here is the strange behavior:
1. link up/down traps only sent after the snmpd is restarted. If I don't
restart snmpd, there were no link up/down traps sent.
2. There were too many link up/down traps after snmpd is restarted. I usually
saw 3 link up traps and 6 link down traps even if I only brought down and up
the interface once.
3. There were only one coldStart trap and one nsShutdown trap as expected.
Does anyone know the reason? I search the email archives and seems that other
people had the same issue before, and one response to the problem was that's
expected behavior. I don't quite understand why the above behavior happened?
Does anyone know how to make link up/down traps work?
ThanksXuan
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