/**
* add new entry
*/
static void
_add_new_entry(netsnmp_defaultrouter_entry *defaultrouter_entry,
netsnmp_container *container)
{
ipDefaultRouterTable_rowreq_ctx *rowreq_ctx;
DEBUGMSGTL(("ipDefaultRouterTable:access", "creating new entry\n"));
netsnmp_assert(NULL != defaultrouter_entry);
netsnmp_assert(NULL != container);
/*
* allocate an row context and set the index(es)
*/
rowreq_ctx = ipDefaultRouterTable_allocate_rowreq_ctx(defaultrouter_entry,
NULL);
if ((NULL != rowreq_ctx) &&
(MFD_SUCCESS ==
ipDefaultRouterTable_indexes_set(rowreq_ctx,
defaultrouter_entry->dr_addresstype,
defaultrouter_entry->dr_address,
defaultrouter_entry->dr_address_len,
defaultrouter_entry->dr_if_index))) {
if (CONTAINER_INSERT(container, rowreq_ctx) < 0) {
DEBUGMSGTL(("ipAddressTable:access",
"container insert failed for new entry\n"));
ipDefaultRouterTable_release_rowreq_ctx(rowreq_ctx);
return;
}
} else {
if (NULL != rowreq_ctx) {
snmp_log(LOG_ERR, "error setting index while loading "
"ipDefaultRouterTable cache.\n");
ipDefaultRouterTable_release_rowreq_ctx(rowreq_ctx);
} else {
snmp_log(LOG_ERR, "memory allocation failed while loading "
"ipDefaultRouterTable cache.\n");
netsnmp_access_defaultrouter_entry_free(defaultrouter_entry);
}
return;
}
}
/**
* @internal
*/
static void
_container_item_free(ipDefaultRouterTable_rowreq_ctx * rowreq_ctx,
void *context)
{
DEBUGMSGTL(("internal:ipDefaultRouterTable:_container_item_free",
"called\n"));
if (NULL == rowreq_ctx)
return;
ipDefaultRouterTable_release_rowreq_ctx(rowreq_ctx);
} /* _container_item_free */
/*
*********************************************************************
* @internal
* allocate resources for a ipDefaultRouterTable_rowreq_ctx
*/
ipDefaultRouterTable_rowreq_ctx *
ipDefaultRouterTable_allocate_rowreq_ctx(ipDefaultRouterTable_data * data,
void *user_init_ctx)
{
ipDefaultRouterTable_rowreq_ctx *rowreq_ctx =
SNMP_MALLOC_TYPEDEF(ipDefaultRouterTable_rowreq_ctx);
DEBUGMSGTL(("internal:ipDefaultRouterTable:ipDefaultRouterTable_allocate_rowreq_ctx", "called\n"));
if (NULL == rowreq_ctx) {
snmp_log(LOG_ERR, "Couldn't allocate memory for a "
"ipDefaultRouterTable_rowreq_ctx.\n");
return NULL;
} else {
if (NULL != data) {
/*
* track if we got data from user
*/
rowreq_ctx->rowreq_flags |= MFD_ROW_DATA_FROM_USER;
rowreq_ctx->data = data;
} else if (NULL ==
(rowreq_ctx->data =
ipDefaultRouterTable_allocate_data())) {
SNMP_FREE(rowreq_ctx);
return NULL;
}
}
/*
* undo context will be allocated when needed (in *_undo_setup)
*/
rowreq_ctx->oid_idx.oids = rowreq_ctx->oid_tmp;
rowreq_ctx->ipDefaultRouterTable_data_list = NULL;
/*
* if we allocated data, call init routine
*/
if (!(rowreq_ctx->rowreq_flags & MFD_ROW_DATA_FROM_USER)) {
if (SNMPERR_SUCCESS !=
ipDefaultRouterTable_rowreq_ctx_init(rowreq_ctx,
user_init_ctx)) {
ipDefaultRouterTable_release_rowreq_ctx(rowreq_ctx);
rowreq_ctx = NULL;
}
}
return rowreq_ctx;
} /* ipDefaultRouterTable_allocate_rowreq_ctx */
/**
* @internal
* wrapper
*/
static int
_mfd_ipDefaultRouterTable_post_request(netsnmp_mib_handler *handler,
netsnmp_handler_registration
*reginfo,
netsnmp_agent_request_info
*agtreq_info,
netsnmp_request_info *requests)
{
ipDefaultRouterTable_rowreq_ctx *rowreq_ctx =
netsnmp_container_table_row_extract(requests);
int rc, packet_rc;
DEBUGMSGTL(("internal:ipDefaultRouterTable:_mfd_ipDefaultRouterTable_post_request", "called\n"));
/*
* release row context, if deleted
*/
if (rowreq_ctx && (rowreq_ctx->rowreq_flags & MFD_ROW_DELETED))
ipDefaultRouterTable_release_rowreq_ctx(rowreq_ctx);
/*
* wait for last call before calling user
*/
if (1 != netsnmp_row_merge_status_last(reginfo, agtreq_info)) {
DEBUGMSGTL(("internal:ipDefaultRouterTable",
"waiting for last post_request\n"));
return SNMP_ERR_NOERROR;
}
packet_rc = netsnmp_check_all_requests_error(agtreq_info->asp, 0);
rc = ipDefaultRouterTable_post_request(ipDefaultRouterTable_if_ctx.
user_ctx, packet_rc);
if (MFD_SUCCESS != rc) {
/*
* nothing we can do about it but log it
*/
DEBUGMSGTL(("ipDefaultRouterTable", "error %d from "
"ipDefaultRouterTable_post_request\n", rc));
}
return SNMP_ERR_NOERROR;
} /* _mfd_ipDefaultRouterTable_post_request */
/**
* load initial data
*
* TODO:350:M: Implement ipDefaultRouterTable data load
* This function will also be called by the cache helper to load
* the container again (after the container free function has been
* called to free the previous contents).
*
* @param container container to which items should be inserted
*
* @retval MFD_SUCCESS : success.
* @retval MFD_RESOURCE_UNAVAILABLE : Can't access data source
* @retval MFD_ERROR : other error.
*
* This function is called to load the index(es) (and data, optionally)
* for the every row in the data set.
*
* @remark
* While loading the data, the only important thing is the indexes.
* If access to your data is cheap/fast (e.g. you have a pointer to a
* structure in memory), it would make sense to update the data here.
* If, however, the accessing the data invovles more work (e.g. parsing
* some other existing data, or peforming calculations to derive the data),
* then you can limit yourself to setting the indexes and saving any
* information you will need later. Then use the saved information in
* ipDefaultRouterTable_row_prep() for populating data.
*
* @note
* If you need consistency between rows (like you want statistics
* for each row to be from the same time frame), you should set all
* data here.
*
*/
int
ipDefaultRouterTable_container_load(netsnmp_container * container)
{
netsnmp_container *defaultrouter_container;
void *tmp_ptr[2];
DEBUGMSGTL(("verbose:ipDefaultRouterTable:ipDefaultRouterTable_container_load", "called\n"));
/*
* TODO:351:M: |-> Load/update data in the ipDefaultRouterTable container.
* loop over your ipDefaultRouterTable data, allocate a rowreq context,
* set the index(es) [and data, optionally] and insert into
* the container.
*/
defaultrouter_container =
netsnmp_access_defaultrouter_container_load(NULL,
NETSNMP_ACCESS_DEFAULTROUTER_LOAD_ADDL_IDX_BY_ADDR);
if (NULL == defaultrouter_container)
return MFD_RESOURCE_UNAVAILABLE; /* msg already logged */
/*
* we just got a fresh copy of interface data. compare it to
* what we've already got, and make any adjustments, saving
* missing addresses to be deleted.
*/
tmp_ptr[0] = defaultrouter_container->next;
tmp_ptr[1] = NULL;
CONTAINER_FOR_EACH(container,
(netsnmp_container_obj_func *) _check_entry_for_updates,
tmp_ptr);
/*
* now add any new interfaces
*/
CONTAINER_FOR_EACH(defaultrouter_container,
(netsnmp_container_obj_func *) _add_new_entry,
container);
/*
* free the container. we've either claimed each entry, or released it,
* so the access function doesn't need to clear the container.
*/
netsnmp_access_defaultrouter_container_free(defaultrouter_container,
NETSNMP_ACCESS_DEFAULTROUTER_FREE_DONT_CLEAR);
/*
* remove deleted addresses from table container
*/
if (NULL != tmp_ptr[1]) {
netsnmp_container *tmp_container =
(netsnmp_container *) tmp_ptr[1];
ipDefaultRouterTable_rowreq_ctx *tmp_ctx;
/*
* this works because the tmp_container is a linked list,
* which can be used like a stack...
*/
while (CONTAINER_SIZE(tmp_container)) {
/*
* get from delete list
*/
tmp_ctx = (ipDefaultRouterTable_rowreq_ctx *) CONTAINER_FIRST(tmp_container);
/*
* release context, delete from table container
*/
CONTAINER_REMOVE(container, tmp_ctx);
ipDefaultRouterTable_release_rowreq_ctx(tmp_ctx);
/*
* pop off delete list
*/
CONTAINER_REMOVE(tmp_container, NULL);
}
}
DEBUGMSGT(("verbose:ipDefaultRouterTable:ipDefaultRouterTable_container_load",
"%" NETSNMP_PRIz "d records\n", CONTAINER_SIZE(container)));
return MFD_SUCCESS;
}
