indigo_error_t
ft_hash_flow_add(ft_instance_t ft, indigo_flow_id_t id,
of_flow_add_t *flow_add, ft_entry_t **entry_p)
{
ft_entry_t *entry;
list_links_t *links;
indigo_error_t rv;
INDIGO_ASSERT(ft->magic == FT_HASH_MAGIC_NUMBER);
LOG_TRACE("Adding flow " INDIGO_FLOW_ID_PRINTF_FORMAT, id);
if (flow_add->version != OF_VERSION_1_0) { /* @fixme */
LOG_ERROR("ERROR: bad version in ft_hash_flow_add");
return INDIGO_ERROR_VERSION;
}
/* If flow ID already exists, error. */
if (ft_id_lookup(ft, id) != NULL) {
return INDIGO_ERROR_EXISTS;
}
/* Grab an entry from the free list */
if ((links = list_pop(&ft->free_list)) == NULL) {
++(ft->status.table_full_errors);
return INDIGO_ERROR_RESOURCE;
}
entry = FT_ENTRY_CONTAINER(links, table);
if ((rv = ft_entry_setup(entry, id, flow_add)) < 0) {
return rv;
}
ft_entry_link(ft, entry);
ft->status.adds += 1;
ft->status.current_count += 1;
if (entry_p != NULL) {
*entry_p = entry;
}
return INDIGO_ERROR_NONE;
}
void
ind_core_expiration_add(ft_entry_t *entry)
{
int reason;
indigo_time_t expiration_time = calc_expiration_time(entry, &reason);
list_links_t *cur;
/* Iterate over list in reverse order */
for (cur = expiration_queue.links.prev;
cur != &expiration_queue.links;
cur = cur->prev) {
ft_entry_t *other = FT_ENTRY_CONTAINER(cur, expiration);
if (calc_expiration_time(other, &reason) <= expiration_time) {
/* 'other' expires before us. Insert after it. */
list_insert_after(cur, &entry->expiration_links);
return;
}
}
/* Lowest expiration time. Insert at front of list. */
list_unshift(&expiration_queue, &entry->expiration_links);
}
static ind_soc_task_status_t
expiration_task(void *cookie)
{
indigo_time_t current_time = INDIGO_CURRENT_TIME;
(void) cookie;
while (!list_empty(&expiration_queue)) {
int reason;
list_links_t *links = expiration_queue.links.next;
ft_entry_t *entry = FT_ENTRY_CONTAINER(links, expiration);
if (calc_expiration_time(entry, &reason) <= current_time) {
expire_flow(entry, reason);
} else {
break;
}
if (ind_soc_should_yield()) {
return IND_SOC_TASK_CONTINUE;
}
}
task_running = false;
return IND_SOC_TASK_FINISHED;
}