/* Execute a group entry of type FAILFAST. */
static void
execute_ff(struct group_entry *entry, struct packet *pkt) {
size_t b = select_from_ff_group(entry);
if (b != -1) {
struct ofl_bucket *bucket = entry->desc->buckets[b];
struct packet *p = packet_clone(pkt);
if (VLOG_IS_DBG_ENABLED(LOG_MODULE)) {
char *b = ofl_structs_bucket_to_string(bucket, entry->dp->exp);
VLOG_DBG_RL(LOG_MODULE, &rl, "Writing bucket: %s.", b);
free(b);
}
action_set_write_actions(p->action_set, bucket->actions_num, bucket->actions);
entry->stats->byte_count += p->buffer->size;
entry->stats->packet_count++;
entry->stats->counters[b]->byte_count += p->buffer->size;
entry->stats->counters[b]->packet_count++;
/* Cookie field is set 0xffffffffffffffff
because we cannot associate to any
particular flow */
action_set_execute(p->action_set, p, 0xffffffffffffffff);
packet_destroy(p);
} else {
VLOG_DBG_RL(LOG_MODULE, &rl, "No bucket in group.");
}
}
/* Executes a group entry of type ALL. */
static void
execute_all(struct group_entry *entry, struct packet *pkt) {
size_t i;
/* TODO Zoltan: Currently packets are always cloned. However it should
* be possible to see if cloning is necessary, or not, based on bucket actions. */
for (i=0; i<entry->desc->buckets_num; i++) {
struct ofl_bucket *bucket = entry->desc->buckets[i];
struct packet *p = packet_clone(pkt);
if (VLOG_IS_DBG_ENABLED(LOG_MODULE)) {
char *b = ofl_structs_bucket_to_string(bucket, entry->dp->exp);
VLOG_DBG_RL(LOG_MODULE, &rl, "Writing bucket: %s.", b);
free(b);
}
action_set_write_actions(p->action_set, bucket->actions_num, bucket->actions);
entry->stats->byte_count += p->buffer->size;
entry->stats->packet_count++;
entry->stats->counters[i]->byte_count += p->buffer->size;
entry->stats->counters[i]->packet_count++;
/* Cookie field is set 0xffffffffffffffff
because we cannot associate to any
particular flow */
action_set_execute(p->action_set, p, 0xffffffffffffffff);
packet_destroy(p);
}
}
/* Execute a group entry of type INDIRECT. */
static void
execute_indirect(struct group_entry *entry, struct packet *pkt) {
if (entry->desc->buckets_num > 0) {
struct ofl_bucket *bucket = entry->desc->buckets[0];
struct packet *p = packet_clone(pkt);
if (VLOG_IS_DBG_ENABLED(LOG_MODULE)) {
char *b = ofl_structs_bucket_to_string(bucket, entry->dp->exp);
VLOG_DBG_RL(LOG_MODULE, &rl, "Writing bucket: %s.", b);
free(b);
}
action_set_write_actions(p->action_set, bucket->actions_num, bucket->actions);
entry->stats->byte_count += p->buffer->size;
entry->stats->packet_count++;
entry->stats->counters[0]->byte_count += p->buffer->size;
entry->stats->counters[0]->packet_count++;
action_set_execute(p->action_set, p);
packet_destroy(p);
} else {
VLOG_DBG_RL(LOG_MODULE, &rl, "No bucket in group.");
}
}
void
pipeline_process_packet(struct pipeline *pl, struct packet *pkt) {
struct flow_table *table, *next_table;
if (VLOG_IS_DBG_ENABLED(LOG_MODULE)) {
char *pkt_str = packet_to_string(pkt);
VLOG_DBG_RL(LOG_MODULE, &rl, "processing packet: %s", pkt_str);
free(pkt_str);
}
if (!packet_handle_std_is_ttl_valid(pkt->handle_std)) {
if ((pl->dp->config.flags & OFPC_INVALID_TTL_TO_CONTROLLER) != 0) {
VLOG_DBG_RL(LOG_MODULE, &rl, "Packet has invalid TTL, sending to controller.");
send_packet_to_controller(pl, pkt, 0/*table_id*/, OFPR_INVALID_TTL);
} else {
VLOG_DBG_RL(LOG_MODULE, &rl, "Packet has invalid TTL, dropping.");
}
packet_destroy(pkt);
return;
}
next_table = pl->tables[0];
while (next_table != NULL) {
struct flow_entry *entry;
VLOG_DBG_RL(LOG_MODULE, &rl, "trying table %u.", next_table->stats->table_id);
pkt->table_id = next_table->stats->table_id;
table = next_table;
next_table = NULL;
entry = flow_table_lookup(table, pkt);
if (entry != NULL) {
if (VLOG_IS_DBG_ENABLED(LOG_MODULE)) {
char *m = ofl_structs_flow_stats_to_string(entry->stats, pkt->dp->exp);
VLOG_DBG_RL(LOG_MODULE, &rl, "found matching entry: %s.", m);
free(m);
}
execute_entry(pl, entry, &next_table, &pkt);
/* Packet could be destroyed by a meter instruction */
if (!pkt)
return;
if (next_table == NULL) {
/* Cookie field is set 0xffffffffffffffff
because we cannot associate it to any
particular flow */
action_set_execute(pkt->action_set, pkt, 0xffffffffffffffff);
packet_destroy(pkt);
return;
}
} else {
/* OpenFlow 1.3 default behavior on a table miss */
VLOG_DBG_RL(LOG_MODULE, &rl, "No matching entry found. Dropping packet.");
packet_destroy(pkt);
return;
}
}
VLOG_WARN_RL(LOG_MODULE, &rl, "Reached outside of pipeline processing cycle.");
}
