-static char *
-patch_port_name(const struct ovsrec_bridge *b1, const struct ovsrec_bridge *b2)
-{
- return xasprintf("patch-%s-to-%s", b1->name, b2->name);
-}
-
-/*
- * Return true if the port is a patch port from b1 to b2
- */
-static bool
-match_patch_port(const struct ovsrec_port *port,
- const struct ovsrec_bridge *b1,
- const struct ovsrec_bridge *b2)
-{
- struct ovsrec_interface *iface;
- size_t i;
- char *peer_port_name;
- bool res = false;
-
- peer_port_name = patch_port_name(b2, b1);
-
- for (i = 0; i < port->n_interfaces; i++) {
- iface = port->interfaces[i];
- if (strcmp(iface->type, "patch")) {
- continue;
- }
- const char *peer;
- peer = smap_get(&iface->options, "peer");
- if (peer && !strcmp(peer, peer_port_name)) {
- res = true;
- break;
- }
- }
-
- free(peer_port_name);
-
- return res;
-}
-
-static void
-create_patch_port(struct controller_ctx *ctx,
- const char *network,
- const struct ovsrec_bridge *b1,
- const struct ovsrec_bridge *b2)
-{
- if (!ctx->ovs_idl_txn) {
- return;
- }
-
- char *port_name = patch_port_name(b1, b2);
- char *peer_port_name = patch_port_name(b2, b1);
-
- ovsdb_idl_txn_add_comment(ctx->ovs_idl_txn,
- "ovn-controller: creating patch port '%s' from '%s' to '%s'",
- port_name, b1->name, b2->name);
-
- struct ovsrec_interface *iface;
- iface = ovsrec_interface_insert(ctx->ovs_idl_txn);
- ovsrec_interface_set_name(iface, port_name);
- ovsrec_interface_set_type(iface, "patch");
- const struct smap options = SMAP_CONST1(&options, "peer", peer_port_name);
- ovsrec_interface_set_options(iface, &options);
-
- struct ovsrec_port *port;
- port = ovsrec_port_insert(ctx->ovs_idl_txn);
- ovsrec_port_set_name(port, port_name);
- ovsrec_port_set_interfaces(port, &iface, 1);
- const struct smap ids = SMAP_CONST1(&ids, "ovn-patch-port", network);
- ovsrec_port_set_external_ids(port, &ids);
-
- struct ovsrec_port **ports;
- ports = xmalloc(sizeof *ports * (b1->n_ports + 1));
- memcpy(ports, b1->ports, sizeof *ports * b1->n_ports);
- ports[b1->n_ports] = port;
- ovsrec_bridge_verify_ports(b1);
- ovsrec_bridge_set_ports(b1, ports, b1->n_ports + 1);
-
- free(ports);
- free(port_name);
- free(peer_port_name);
-}
-
-static void
-create_patch_ports(struct controller_ctx *ctx,
- const char *network,
- struct shash *existing_ports,
- const struct ovsrec_bridge *b1,
- const struct ovsrec_bridge *b2)
-{
- size_t i;
-
- for (i = 0; i < b1->n_ports; i++) {
- if (match_patch_port(b1->ports[i], b1, b2)) {
- /* Patch port already exists on b1 */
- shash_find_and_delete(existing_ports, b1->ports[i]->name);
- break;
- }
- }
- if (i == b1->n_ports) {
- create_patch_port(ctx, network, b1, b2);
- }
-}
-
-static void
-init_existing_ports(struct controller_ctx *ctx,
- struct shash *existing_ports)
-{
- const struct ovsrec_port *port;
-
- OVSREC_PORT_FOR_EACH (port, ctx->ovs_idl) {
- if (smap_get(&port->external_ids, "ovn-patch-port")) {
- shash_add(existing_ports, port->name, port);
- }
- }
-}
-
-static void
-remove_port(struct controller_ctx *ctx,
- const struct ovsrec_port *port)
-{
- const struct ovsrec_bridge *bridge;
-
- /* We know the port we want to delete, but we have to find the bridge its on
- * to do so. Note this only runs on a config change that should be pretty
- * rare. */
- OVSREC_BRIDGE_FOR_EACH (bridge, ctx->ovs_idl) {
- size_t i;
- for (i = 0; i < bridge->n_ports; i++) {
- if (bridge->ports[i] != port) {
- continue;
- }
- struct ovsrec_port **new_ports;
- new_ports = xmemdup(bridge->ports,
- sizeof *new_ports * (bridge->n_ports - 1));
- if (i != bridge->n_ports - 1) {
- /* Removed port was not last */
- new_ports[i] = bridge->ports[bridge->n_ports - 1];
- }
- ovsrec_bridge_verify_ports(bridge);
- ovsrec_bridge_set_ports(bridge, new_ports, bridge->n_ports - 1);
- free(new_ports);
- ovsrec_port_delete(port);
- return;
- }
- }
-}
-
-static void
-parse_bridge_mappings(struct controller_ctx *ctx,
- const struct ovsrec_bridge *br_int,
- const char *mappings_cfg)
-{
- struct shash existing_ports = SHASH_INITIALIZER(&existing_ports);
- init_existing_ports(ctx, &existing_ports);
-
- char *cur, *next, *start;
- next = start = xstrdup(mappings_cfg);
- while ((cur = strsep(&next, ",")) && *cur) {
- char *network, *bridge = cur;
- const struct ovsrec_bridge *ovs_bridge;
-
- network = strsep(&bridge, ":");
- if (!bridge || !*network || !*bridge) {
- VLOG_ERR("Invalid ovn-bridge-mappings configuration: '%s'",
- mappings_cfg);
- break;
- }
-
- ovs_bridge = get_bridge(ctx->ovs_idl, bridge);
- if (!ovs_bridge) {
- VLOG_WARN("Bridge '%s' not found for network '%s'",
- bridge, network);
- continue;
- }
-
- create_patch_ports(ctx, network, &existing_ports, br_int, ovs_bridge);
- create_patch_ports(ctx, network, &existing_ports, ovs_bridge, br_int);
- }
- free(start);
-
- /* Any ports left in existing_ports are related to configuration that has
- * been removed, so we should delete the ports now. */
- struct shash_node *port_node, *port_next_node;
- SHASH_FOR_EACH_SAFE (port_node, port_next_node, &existing_ports) {
- struct ovsrec_port *port = port_node->data;
- shash_delete(&existing_ports, port_node);
- remove_port(ctx, port);
- }
- shash_destroy(&existing_ports);
-}
-
-static void
-init_bridge_mappings(struct controller_ctx *ctx,
- const struct ovsrec_bridge *br_int)
-{
- const char *mappings_cfg = "";
- const struct ovsrec_open_vswitch *cfg;
-
- cfg = ovsrec_open_vswitch_first(ctx->ovs_idl);
- if (cfg) {
- mappings_cfg = smap_get(&cfg->external_ids, "ovn-bridge-mappings");
- if (!mappings_cfg) {
- mappings_cfg = "";
- }
- }
- parse_bridge_mappings(ctx, br_int, mappings_cfg);
-}
-