-static bool
-is_discovery_controller(const struct ofproto_controller *c)
-{
- return !strcmp(c->target, "discover");
-}
-
-static bool
-is_in_band_controller(const struct ofproto_controller *c)
-{
- return is_discovery_controller(c) || c->band == OFPROTO_IN_BAND;
-}
-
-/* Creates a new controller in 'ofproto'. Some of the settings are initially
- * drawn from 'c', but update_controller() needs to be called later to finish
- * the new ofconn's configuration. */
-static void
-add_controller(struct ofproto *ofproto, const struct ofproto_controller *c)
-{
- struct discovery *discovery;
- struct ofconn *ofconn;
-
- if (is_discovery_controller(c)) {
- int error = discovery_create(c->accept_re, c->update_resolv_conf,
- ofproto->dpif, ofproto->switch_status,
- &discovery);
- if (error) {
- return;
- }
- } else {
- discovery = NULL;
- }
-
- ofconn = ofconn_create(ofproto, rconn_create(5, 8), OFCONN_PRIMARY);
- ofconn->pktbuf = pktbuf_create();
- ofconn->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN;
- if (discovery) {
- ofconn->discovery = discovery;
- } else {
- char *name = ofconn_make_name(ofproto, c->target);
- rconn_connect(ofconn->rconn, c->target, name);
- free(name);
- }
- hmap_insert(&ofproto->controllers, &ofconn->hmap_node,
- hash_string(c->target, 0));
-}
-
-/* Reconfigures 'ofconn' to match 'c'. This function cannot update an ofconn's
- * target or turn discovery on or off (these are done by creating new ofconns
- * and deleting old ones), but it can update the rest of an ofconn's
- * settings. */
-static void
-update_controller(struct ofconn *ofconn, const struct ofproto_controller *c)
-{
- int probe_interval;
-
- ofconn->band = (is_in_band_controller(c)
- ? OFPROTO_IN_BAND : OFPROTO_OUT_OF_BAND);
-
- rconn_set_max_backoff(ofconn->rconn, c->max_backoff);
-
- probe_interval = c->probe_interval ? MAX(c->probe_interval, 5) : 0;
- rconn_set_probe_interval(ofconn->rconn, probe_interval);
-
- if (ofconn->discovery) {
- discovery_set_update_resolv_conf(ofconn->discovery,
- c->update_resolv_conf);
- discovery_set_accept_controller_re(ofconn->discovery, c->accept_re);
- }
-
- ofconn_set_rate_limit(ofconn, c->rate_limit, c->burst_limit);
-}
-
-static const char *
-ofconn_get_target(const struct ofconn *ofconn)
-{
- return ofconn->discovery ? "discover" : rconn_get_target(ofconn->rconn);
-}
-
-static struct ofconn *
-find_controller_by_target(struct ofproto *ofproto, const char *target)
-{
- struct ofconn *ofconn;
-
- HMAP_FOR_EACH_WITH_HASH (ofconn, hmap_node,
- hash_string(target, 0), &ofproto->controllers) {
- if (!strcmp(ofconn_get_target(ofconn), target)) {
- return ofconn;
- }
- }
- return NULL;
-}
-
-static void
-update_in_band_remotes(struct ofproto *ofproto)
-{
- const struct ofconn *ofconn;
- struct sockaddr_in *addrs;
- size_t max_addrs, n_addrs;
- bool discovery;
- size_t i;
-
- /* Allocate enough memory for as many remotes as we could possibly have. */
- max_addrs = ofproto->n_extra_remotes + hmap_count(&ofproto->controllers);
- addrs = xmalloc(max_addrs * sizeof *addrs);
- n_addrs = 0;
-
- /* Add all the remotes. */
- discovery = false;
- HMAP_FOR_EACH (ofconn, hmap_node, &ofproto->controllers) {
- struct sockaddr_in *sin = &addrs[n_addrs];
-
- if (ofconn->band == OFPROTO_OUT_OF_BAND) {
- continue;
- }
-
- sin->sin_addr.s_addr = rconn_get_remote_ip(ofconn->rconn);
- if (sin->sin_addr.s_addr) {
- sin->sin_port = rconn_get_remote_port(ofconn->rconn);
- n_addrs++;
- }
- if (ofconn->discovery) {
- discovery = true;
- }
- }
- for (i = 0; i < ofproto->n_extra_remotes; i++) {
- addrs[n_addrs++] = ofproto->extra_in_band_remotes[i];
- }
-
- /* Create or update or destroy in-band.
- *
- * Ordinarily we only enable in-band if there's at least one remote
- * address, but discovery needs the in-band rules for DHCP to be installed
- * even before we know any remote addresses. */
- if (n_addrs || discovery) {
- if (!ofproto->in_band) {
- in_band_create(ofproto, ofproto->dpif, ofproto->switch_status,
- &ofproto->in_band);
- }
- if (ofproto->in_band) {
- in_band_set_remotes(ofproto->in_band, addrs, n_addrs);
- }
- in_band_set_queue(ofproto->in_band, ofproto->in_band_queue);
- ofproto->next_in_band_update = time_msec() + 1000;
- } else {
- in_band_destroy(ofproto->in_band);
- ofproto->in_band = NULL;
- }
-
- /* Clean up. */
- free(addrs);
-}
-
-static void
-update_fail_open(struct ofproto *p)
-{
- struct ofconn *ofconn;
-
- if (!hmap_is_empty(&p->controllers)
- && p->fail_mode == OFPROTO_FAIL_STANDALONE) {
- struct rconn **rconns;
- size_t n;
-
- if (!p->fail_open) {
- p->fail_open = fail_open_create(p, p->switch_status);
- }
-
- n = 0;
- rconns = xmalloc(hmap_count(&p->controllers) * sizeof *rconns);
- HMAP_FOR_EACH (ofconn, hmap_node, &p->controllers) {
- rconns[n++] = ofconn->rconn;
- }
-
- fail_open_set_controllers(p->fail_open, rconns, n);
- /* p->fail_open takes ownership of 'rconns'. */
- } else {
- fail_open_destroy(p->fail_open);
- p->fail_open = NULL;
- }
-}
-