/* Creates and returns a new learning switch.
*
* If 'learn_macs' is true, the new switch will learn the ports on which MAC
* addresses appear. Otherwise, the new switch will flood all packets.
*
* If 'max_idle' is nonnegative, the new switch will set up flows that expire
* after the given number of seconds (or never expire, if 'max_idle' is
* OFP_FLOW_PERMANENT). Otherwise, the new switch will process every packet.
*
* The caller may provide the file stream 'default_flows' that defines
* default flows that should be pushed when a switch connects. Each
* line is a flow entry in the format described for "add-flows" command
* in the Flow Syntax section of the ovs-ofct(8) man page. The caller
* is responsible for closing the stream.
*
* 'rconn' is used to send out an OpenFlow features request. */
struct lswitch *
lswitch_create(struct rconn *rconn, bool learn_macs,
bool exact_flows, int max_idle, bool action_normal,
FILE *default_flows)
{
struct lswitch *sw;
sw = xzalloc(sizeof *sw);
sw->max_idle = max_idle;
sw->datapath_id = 0;
sw->last_features_request = time_now() - 1;
sw->ml = learn_macs ? mac_learning_create() : NULL;
sw->action_normal = action_normal;
if (exact_flows) {
/* Exact match. */
sw->wildcards = 0;
} else {
/* We cannot wildcard all fields.
* We need in_port to detect moves.
* We need both SA and DA to do learning. */
sw->wildcards = (OFPFW_DL_TYPE | OFPFW_NW_SRC_MASK | OFPFW_NW_DST_MASK
| OFPFW_NW_PROTO | OFPFW_TP_SRC | OFPFW_TP_DST);
}
sw->queue = UINT32_MAX;
sw->queued = rconn_packet_counter_create();
send_features_request(sw, rconn);
if (default_flows) {
send_default_flows(sw, rconn, default_flows);
}
return sw;
}
void
ofctrl_init(void)
{
swconn = rconn_create(5, 0, DSCP_DEFAULT, 1 << OFP13_VERSION);
tx_counter = rconn_packet_counter_create();
hmap_init(&installed_flows);
}
/* Creates and returns a new struct fail_open for 'ofproto' and 'mgr'. */
struct fail_open *
fail_open_create(struct ofproto *ofproto, struct connmgr *mgr)
{
struct fail_open *fo = xmalloc(sizeof *fo);
fo->ofproto = ofproto;
fo->connmgr = mgr;
fo->last_disconn_secs = 0;
fo->next_bogus_packet_in = LLONG_MAX;
fo->bogus_packet_counter = rconn_packet_counter_create();
return fo;
}
/* Creates and returns a new learning switch whose configuration is given by
* 'cfg'.
*
* 'rconn' is used to send out an OpenFlow features request. */
struct lswitch *
lswitch_create(struct rconn *rconn, const struct lswitch_config *cfg)
{
struct lswitch *sw;
sw = xzalloc(sizeof *sw);
sw->rconn = rconn;
sw->state = S_CONNECTING;
sw->max_idle = cfg->max_idle;
sw->datapath_id = 0;
sw->default_flows = cfg->default_flows;
sw->n_default_flows = cfg->n_default_flows;
sw->usable_protocols = cfg->usable_protocols;
sw->queued = rconn_packet_counter_create();
VLOG_INFO("new lswitch in");
return sw;
}