- COVERAGE_INC(ofproto_update_port);
-
- /* Query the datapath for port information. */
- error = dpif_port_query_by_name(p->dpif, devname, &dpif_port);
-
- /* Find the old ofport. */
- old_ofport = shash_find_data(&p->port_by_name, devname);
- if (!error) {
- if (!old_ofport) {
- /* There's no port named 'devname' but there might be a port with
- * the same port number. This could happen if a port is deleted
- * and then a new one added in its place very quickly, or if a port
- * is renamed. In the former case we want to send an OFPPR_DELETE
- * and an OFPPR_ADD, and in the latter case we want to send a
- * single OFPPR_MODIFY. We can distinguish the cases by comparing
- * the old port's ifindex against the new port, or perhaps less
- * reliably but more portably by comparing the old port's MAC
- * against the new port's MAC. However, this code isn't that smart
- * and always sends an OFPPR_MODIFY (XXX). */
- old_ofport = get_port(p, dpif_port.port_no);
- }
- } else if (error != ENOENT && error != ENODEV) {
- VLOG_WARN_RL(&rl, "dpif_port_query_by_name returned unexpected error "
- "%s", strerror(error));
- goto exit;
- }
-
- /* Create a new ofport. */
- new_ofport = !error ? make_ofport(&dpif_port) : NULL;
-
- /* Eliminate a few pathological cases. */
- if (!old_ofport && !new_ofport) {
- goto exit;
- } else if (old_ofport && new_ofport) {
- /* Most of the 'config' bits are OpenFlow soft state, but
- * OFPPC_PORT_DOWN is maintained by the kernel. So transfer the
- * OpenFlow bits from old_ofport. (make_ofport() only sets
- * OFPPC_PORT_DOWN and leaves the other bits 0.) */
- new_ofport->opp.config |= old_ofport->opp.config & ~OFPPC_PORT_DOWN;
-
- if (ofport_equal(old_ofport, new_ofport)) {
- /* False alarm--no change. */
- ofport_free(new_ofport);
- goto exit;
- }
- }
-
- /* Now deal with the normal cases. */
- if (old_ofport) {
- ofport_remove(p, old_ofport);
- }
- if (new_ofport) {
- ofport_install(p, new_ofport);
- }
- connmgr_send_port_status(p->connmgr,
- new_ofport ? &new_ofport->opp : &old_ofport->opp,
- (!old_ofport ? OFPPR_ADD
- : !new_ofport ? OFPPR_DELETE
- : OFPPR_MODIFY));
- ofport_free(old_ofport);
-
-exit:
- dpif_port_destroy(&dpif_port);
-}
-
-static int
-init_ports(struct ofproto *p)
-{
- struct dpif_port_dump dump;
- struct dpif_port dpif_port;
-
- DPIF_PORT_FOR_EACH (&dpif_port, &dump, p->dpif) {
- if (!ofport_conflicts(p, &dpif_port)) {
- struct ofport *ofport = make_ofport(&dpif_port);
- if (ofport) {
- ofport_install(p, ofport);
- }
- }
- }
-
- return 0;
-}
-\f
-/* Returns true if 'rule' should be hidden from the controller.
- *
- * Rules with priority higher than UINT16_MAX are set up by ofproto itself
- * (e.g. by in-band control) and are intentionally hidden from the
- * controller. */
-static bool
-rule_is_hidden(const struct rule *rule)
-{
- return rule->cr.priority > UINT16_MAX;
-}
-
-/* Creates and returns a new rule initialized as specified.
- *
- * The caller is responsible for inserting the rule into the classifier (with
- * rule_insert()). */
-static struct rule *
-rule_create(const struct cls_rule *cls_rule,
- const union ofp_action *actions, size_t n_actions,
- uint16_t idle_timeout, uint16_t hard_timeout,
- ovs_be64 flow_cookie, bool send_flow_removed)
-{
- struct rule *rule = xzalloc(sizeof *rule);
- rule->cr = *cls_rule;
- rule->idle_timeout = idle_timeout;
- rule->hard_timeout = hard_timeout;
- rule->flow_cookie = flow_cookie;
- rule->used = rule->created = time_msec();
- rule->send_flow_removed = send_flow_removed;
- list_init(&rule->facets);
- if (n_actions > 0) {
- rule->n_actions = n_actions;
- rule->actions = xmemdup(actions, n_actions * sizeof *actions);