void
indigo_core_flow_removed(indigo_fi_flow_removed_t reason,
indigo_fi_flow_stats_t *stats)
{
ft_entry_t *entry;
if (!ind_core_init_done) {
return;
}
LOG_TRACE("Async flow removed. reason %d. id "
INDIGO_FLOW_ID_PRINTF_FORMAT, reason,
INDIGO_FLOW_ID_PRINTF_ARG((indigo_cookie_t) stats->flow_id));
/* After entry look up, this looks like ind_core_flow_entry_delete */
entry = ft_lookup(ind_core_ft, stats->flow_id);
if (entry == NULL) {
LOG_TRACE("Async flow removed: did not find entry in SM table. id "
INDIGO_FLOW_ID_PRINTF_FORMAT,
INDIGO_FLOW_ID_PRINTF_ARG((indigo_cookie_t) stats->flow_id));
return;
}
process_flow_removal(entry, stats, reason);
}
static void
process_flow_removal(ft_entry_t *entry,
indigo_fi_flow_stats_t *final_stats,
indigo_fi_flow_removed_t reason)
{
indigo_error_t rv;
if (entry->flags & OF_FLOW_MOD_FLAG_SEND_FLOW_REM) {
/* See OF spec 1.0.1, section 3.5, page 6 */
if (reason != INDIGO_FLOW_REMOVED_OVERWRITE) {
if (final_stats != NULL) {
INDIGO_ASSERT(final_stats->flow_id == entry->id);
entry->packets = final_stats->packets;
entry->bytes = final_stats->bytes;
} else {
entry->packets = (uint64_t)-1;
entry->bytes = (uint64_t)-1;
}
send_flow_removed_message(entry, reason);
}
}
rv = ft_delete(ind_core_ft, entry);
if (rv != INDIGO_ERROR_NONE) {
LOG_ERROR("Error deleting flow from state mgr. id: "
INDIGO_FLOW_ID_PRINTF_FORMAT,
INDIGO_FLOW_ID_PRINTF_ARG(entry->id));
}
LOG_TRACE("Flow table now has %d entries",
FT_STATUS(ind_core_ft)->current_count);
}
static void
expire_flow(ft_entry_t *entry, int reason)
{
if (reason == INDIGO_FLOW_REMOVED_HARD_TIMEOUT) {
LOG_TRACE("Hard TO (%d): " INDIGO_FLOW_ID_PRINTF_FORMAT,
entry->hard_timeout,
INDIGO_FLOW_ID_PRINTF_ARG(entry->id));
ind_core_flow_entry_delete(entry, reason, INDIGO_CXN_ID_UNSPECIFIED);
} else if (reason == OF_FLOW_REMOVED_REASON_IDLE_TIMEOUT) {
int rv;
bool hit;
/* Get hit status for idle timeouts */
ind_core_table_t *table = ind_core_table_get(entry->table_id);
if (table != NULL) {
rv = table->ops->entry_hit_status_get(table->priv, INDIGO_CXN_ID_UNSPECIFIED,
entry->priv, &hit);
} else {
rv = indigo_fwd_flow_hit_status_get(entry->id, &hit);
}
if (rv != INDIGO_ERROR_NONE) {
LOG_ERROR("Failed to get hit status for flow "
INDIGO_FLOW_ID_PRINTF_FORMAT": %s",
entry->id, indigo_strerror(rv));
return;
}
if (hit || entry->flags & OF_FLOW_MOD_FLAG_BSN_SEND_IDLE) {
/* Reinsert entry into the expiration list */
entry->last_counter_change = INDIGO_CURRENT_TIME;
ind_core_expiration_remove(entry);
ind_core_expiration_add(entry);
}
if (!hit) {
if (entry->flags & OF_FLOW_MOD_FLAG_BSN_SEND_IDLE) {
send_idle_notification(entry);
} else {
LOG_TRACE("Idle TO (%d): " INDIGO_FLOW_ID_PRINTF_FORMAT,
entry->idle_timeout,
INDIGO_FLOW_ID_PRINTF_ARG(entry->id));
ind_core_flow_entry_delete(entry, reason, INDIGO_CXN_ID_UNSPECIFIED);
}
}
}
}
void
ind_core_flow_entry_delete(ft_entry_t *entry, indigo_fi_flow_removed_t reason,
indigo_cxn_id_t cxn_id)
{
indigo_error_t rv;
indigo_fi_flow_stats_t flow_stats;
LOG_TRACE("Removing flow " INDIGO_FLOW_ID_PRINTF_FORMAT,
INDIGO_FLOW_ID_PRINTF_ARG(entry->id));
rv = indigo_fwd_flow_delete(entry->id, &flow_stats);
if (rv != INDIGO_ERROR_NONE) {
LOG_ERROR("Error deleting flow, id " INDIGO_FLOW_ID_PRINTF_FORMAT,
INDIGO_FLOW_ID_PRINTF_ARG(entry->id));
/* Ignoring failure */
}
process_flow_removal(entry, &flow_stats, reason);
}
/**
* Timer operation to expire flows.
*
* Calls indigo_fwd_flow_stats_get for each flow in the table. The expiration
* is done in flow_expiration_timer_cb when the reply is received.
*
* Ignore this call if the module is not enabled.
*/
static void
flow_expiration_timer(void *cookie)
{
ft_entry_t *entry;
list_links_t *cur, *next;
indigo_time_t current_time = INDIGO_CURRENT_TIME;
if (!ind_core_module_enabled) {
return;
}
FT_ITER(ind_core_ft, entry, cur, next) {
indigo_error_t rv;
indigo_fi_flow_stats_t flow_stats;
if (entry->hard_timeout > 0) {
uint32_t delta;
delta = INDIGO_TIME_DIFF_ms(entry->insert_time,
current_time) / 1000;
if (delta >= entry->hard_timeout) {
LOG_TRACE("Hard TO (%d): " INDIGO_FLOW_ID_PRINTF_FORMAT,
entry->hard_timeout,
INDIGO_FLOW_ID_PRINTF_ARG(entry->id));
ind_core_flow_entry_delete(entry, INDIGO_FLOW_REMOVED_HARD_TIMEOUT,
INDIGO_CXN_ID_UNSPECIFIED);
continue;
}
}
/* Update local copy of counters */
/* Only used currently for idle timeouts */
if (entry->idle_timeout > 0) {
rv = indigo_fwd_flow_stats_get(entry->id, &flow_stats);
if (rv != INDIGO_ERROR_NONE) {
LOG_ERROR("Failed to get stats for flow "INDIGO_FLOW_ID_PRINTF_FORMAT": %d",
entry->id, rv);
continue;
}
if (entry->packets != flow_stats.packets) {
entry->packets = flow_stats.packets;
entry->last_counter_change = current_time;
}
if (entry->bytes != flow_stats.bytes) {
entry->bytes = flow_stats.bytes;
entry->last_counter_change = current_time;
}
}
if (entry->idle_timeout > 0) {
uint32_t delta;
delta = INDIGO_TIME_DIFF_ms(entry->last_counter_change,
current_time) / 1000;
if (delta >= entry->idle_timeout) {
LOG_TRACE("Idle TO (%d): " INDIGO_FLOW_ID_PRINTF_FORMAT,
entry->idle_timeout, INDIGO_FLOW_ID_PRINTF_ARG(entry->id));
ind_core_flow_entry_delete(entry, INDIGO_FLOW_REMOVED_IDLE_TIMEOUT,
INDIGO_CXN_ID_UNSPECIFIED);
continue;
}
}
}