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Commit f1b78951 authored by Adam Wujek's avatar Adam Wujek 💬 Committed by Grzegorz Daniluk
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userspace/snmp: add from wrsTableTemplate.h to wrsPtpInstanceTable.c 

Signed-off-by: Adam Wujek's avatarAdam Wujek <adam.wujek@cern.ch>
parent 71b0ff55
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Showing with 181 additions and 1 deletion
userspace/snmpd/wrsPtpInstanceTable.c
View file @ f1b78951
......@@ -131,4 +131,184 @@ time_t wrsPtpInstanceTable_data_fill(unsigned int *n_rows)
#define TT_INIT_FUNC init_wrsPtpInstanceTable
#define TT_CACHE_TIMEOUT WRSPTPINSTANCETABLE_CACHE_TIMEOUT
#include "wrsTableTemplate.h"
/* global variable to keep number of rows, filled by cache function
* one for each table */
static unsigned int t_n_rows; /* template n_rows */
struct coordinates_s {
int port;
int inst;
};
struct coordinates_s inst_c;
static netsnmp_variable_list *
table_next_entry(void **loop_context,
void **data_context,
netsnmp_variable_list *index,
netsnmp_iterator_info *data)
{
inst_c.inst++;
if (inst_c.inst > 1){
inst_c.inst = 0;
inst_c.port++;
}
if (inst_c.port > 5){
return NULL;
}
/* create the line ID from counter number */
// i = (intptr_t)*loop_context;
// if (i >= t_n_rows)
// return NULL; /* no more */
// i++;
/* Create the row OID: only the counter index */
snmp_set_var_value(index, (u_char *)&inst_c.port, sizeof(inst_c.port));
snmp_set_var_value(index->next_variable, (u_char *)&inst_c.inst, sizeof(inst_c.inst));
/* Set the data context (1..4)
* Cannot be set to 0, because netsnmp_extract_iterator_context returns
* NULL in function wrsPstats_handler when table is over */
*data_context = (void *)&inst_c;
/* and set the loop context for the next iteration */
*loop_context = (void *)&inst_c;
return index;
}
static netsnmp_variable_list *
table_first_entry(void **loop_context,
void **data_context,
netsnmp_variable_list *index,
netsnmp_iterator_info *data)
{
inst_c.port = 0;
inst_c.inst = 0;
/* reset internal position, so "next" is "first" */
*loop_context = &inst_c; /* first counter */
return table_next_entry(loop_context, data_context, index, data);
}
static int
table_handler(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
netsnmp_request_info *request;
netsnmp_variable_list *requestvb;
netsnmp_table_request_info *table_info;
struct pickinfo *pi;
int row, subid;
int len;
void *ptr;
struct counter64 tmp_counter64;
switch (reqinfo->mode) {
case MODE_GET:
/* "break;" so read code is not indented too much */
break;
case MODE_GETNEXT:
case MODE_GETBULK:
case MODE_SET_RESERVE1:
case MODE_SET_RESERVE2:
case MODE_SET_ACTION:
case MODE_SET_COMMIT:
case MODE_SET_FREE:
case MODE_SET_UNDO:
/* unsupported mode */
return SNMP_ERR_NOERROR;
default:
/* unknown mode */
return SNMP_ERR_NOERROR;
}
for (request = requests; request; request = request->next) {
struct coordinates_s *xxx;
requestvb = request->requestvb;
/* "context" is the row number */
xxx = (struct coordinates_s*)netsnmp_extract_iterator_context(request);
if (!xxx)
/* NULL returned from
* netsnmp_extract_iterator_context shuld be
* interpreted as end of table */
break;
/* change range of row (1..X (snmp is 1 based) ->
* 0..X (wrs_t_table_array/data array is 0 based)) */
row = 5;
table_info = netsnmp_extract_table_info(request);
subid = table_info->colnum - 1;
pi = TT_PICKINFO + subid;
ptr = (void *)(TT_DATA_ARRAY + row) + pi->offset;
/* snmp_set_var_typed_value function does not support counter64
* as a uint64_t, but as a struct counter64. Their binary
* representation differs by order of 32bit words. We fill
* struct counter64 according to its fields. */
if (pi->type == ASN_COUNTER64) {
tmp_counter64.high = (*(uint64_t *)ptr) >> 32;
tmp_counter64.low = *(uint64_t *)ptr;
ptr = &tmp_counter64;
}
len = pi->len;
if (len > 8) /* special case for strings */
len = strnlen(ptr, len);
snmp_set_var_typed_value(requestvb, pi->type, ptr, len);
}
return SNMP_ERR_NOERROR;
}
static int table_cache_load(netsnmp_cache *cache, void *vmagic)
{
TT_DATA_FILL_FUNC(&t_n_rows);
return 0;
}
void TT_INIT_FUNC(void)
{
const oid wrsTT_oid[] = { TT_OID };
netsnmp_table_registration_info *table_info;
netsnmp_iterator_info *iinfo;
netsnmp_handler_registration *reginfo;
/* do the registration for the table/per-port */
table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
if (!table_info)
return;
/* Add indexes: we only use one integer OID member as line identifier */
netsnmp_table_helper_add_indexes(table_info, ASN_INTEGER, ASN_INTEGER, 0);
/* first column is index, but don't return it, it is only for MIB */
table_info->min_column = 3;
table_info->max_column = ARRAY_SIZE(TT_PICKINFO);
/* Iterator info */
iinfo = SNMP_MALLOC_TYPEDEF(netsnmp_iterator_info);
if (!iinfo)
return; /* free table_info? */
iinfo->get_first_data_point = table_first_entry;
iinfo->get_next_data_point = table_next_entry;
iinfo->table_reginfo = table_info;
/* register the table */
reginfo = netsnmp_create_handler_registration(TT_GROUP_NAME,
table_handler,
wrsTT_oid,
OID_LENGTH(wrsTT_oid),
HANDLER_CAN_RONLY);
netsnmp_register_table_iterator(reginfo, iinfo);
netsnmp_inject_handler(reginfo,
netsnmp_get_cache_handler(TT_CACHE_TIMEOUT,
table_cache_load, NULL,
wrsTT_oid,
OID_LENGTH(wrsTT_oid)));
}
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