- struct ds results;
-
- br = bridge_lookup(args);
- if (!br) {
- unixctl_command_reply(conn, 501, "Unknown bridge");
- return;
- }
-
- ds_init(&results);
- ofproto_get_all_flows(br->ofproto, &results);
-
- unixctl_command_reply(conn, 200, ds_cstr(&results));
- ds_destroy(&results);
-}
-
-static int
-bridge_run_one(struct bridge *br)
-{
- int error;
-
- error = ofproto_run1(br->ofproto);
- if (error) {
- return error;
- }
-
- if (br->ml) {
- mac_learning_run(br->ml, ofproto_get_revalidate_set(br->ofproto));
- }
- bond_run(br);
- brstp_run(br);
-
- error = ofproto_run2(br->ofproto, br->flush);
- br->flush = false;
-
- return error;
-}
-
-static const char *
-bridge_get_controller(const struct bridge *br)
-{
- const char *controller;
-
- controller = cfg_get_string(0, "bridge.%s.controller", br->name);
- if (!controller) {
- controller = cfg_get_string(0, "mgmt.controller");
- }
- return controller && controller[0] ? controller : NULL;
-}
-
-static bool
-check_duplicate_ifaces(struct bridge *br, struct iface *iface, void *ifaces_)
-{
- struct svec *ifaces = ifaces_;
- if (!svec_contains(ifaces, iface->name)) {
- svec_add(ifaces, iface->name);
- svec_sort(ifaces);
- return true;
- } else {
- VLOG_ERR("bridge %s: %s interface is on multiple ports, "
- "removing from %s",
- br->name, iface->name, iface->port->name);
- return false;
- }
-}
-
-static void
-bridge_reconfigure_one(struct bridge *br)
-{
- struct svec old_ports, new_ports, ifaces;
- struct svec listeners, old_listeners;
- struct svec snoops, old_snoops;
- size_t i;
-
- /* Collect old ports. */
- svec_init(&old_ports);
- for (i = 0; i < br->n_ports; i++) {
- svec_add(&old_ports, br->ports[i]->name);
- }
- svec_sort(&old_ports);
- assert(svec_is_unique(&old_ports));
-
- /* Collect new ports. */
- svec_init(&new_ports);
- cfg_get_all_keys(&new_ports, "bridge.%s.port", br->name);
- svec_sort(&new_ports);
- if (bridge_get_controller(br)) {
- char local_name[IF_NAMESIZE];
- int error;
-
- error = dpif_port_get_name(br->dpif, ODPP_LOCAL,
- local_name, sizeof local_name);
- if (!error && !svec_contains(&new_ports, local_name)) {
- svec_add(&new_ports, local_name);
- svec_sort(&new_ports);
- }
- }
- if (!svec_is_unique(&new_ports)) {
- VLOG_WARN("bridge %s: %s specified twice as bridge port",
- br->name, svec_get_duplicate(&new_ports));
- svec_unique(&new_ports);
- }
-
- ofproto_set_mgmt_id(br->ofproto, mgmt_id);
-
- /* Get rid of deleted ports and add new ports. */
- for (i = 0; i < br->n_ports; ) {
- struct port *port = br->ports[i];
- if (!svec_contains(&new_ports, port->name)) {
- port_destroy(port);
- } else {
- i++;
- }
- }
- for (i = 0; i < new_ports.n; i++) {
- const char *name = new_ports.names[i];
- if (!svec_contains(&old_ports, name)) {
- port_create(br, name);
- }
- }
- svec_destroy(&old_ports);
- svec_destroy(&new_ports);
-
- /* Reconfigure all ports. */
- for (i = 0; i < br->n_ports; i++) {
- port_reconfigure(br->ports[i]);
- }
-
- /* Check and delete duplicate interfaces. */
- svec_init(&ifaces);
- iterate_and_prune_ifaces(br, check_duplicate_ifaces, &ifaces);
- svec_destroy(&ifaces);
-
- /* Delete all flows if we're switching from connected to standalone or vice
- * versa. (XXX Should we delete all flows if we are switching from one
- * controller to another?) */
-
- /* Configure OpenFlow management listeners. */
- svec_init(&listeners);
- cfg_get_all_strings(&listeners, "bridge.%s.openflow.listeners", br->name);
- if (!listeners.n) {
- svec_add_nocopy(&listeners, xasprintf("punix:%s/%s.mgmt",
- ovs_rundir, br->name));
- } else if (listeners.n == 1 && !strcmp(listeners.names[0], "none")) {
- svec_clear(&listeners);
- }
- svec_sort_unique(&listeners);
-
- svec_init(&old_listeners);
- ofproto_get_listeners(br->ofproto, &old_listeners);
- svec_sort_unique(&old_listeners);
-
- if (!svec_equal(&listeners, &old_listeners)) {
- ofproto_set_listeners(br->ofproto, &listeners);
- }
- svec_destroy(&listeners);
- svec_destroy(&old_listeners);
-
- /* Configure OpenFlow controller connection snooping. */
- svec_init(&snoops);
- cfg_get_all_strings(&snoops, "bridge.%s.openflow.snoops", br->name);
- if (!snoops.n) {
- svec_add_nocopy(&snoops, xasprintf("punix:%s/%s.snoop",
- ovs_rundir, br->name));
- } else if (snoops.n == 1 && !strcmp(snoops.names[0], "none")) {
- svec_clear(&snoops);
- }
- svec_sort_unique(&snoops);
-
- svec_init(&old_snoops);
- ofproto_get_snoops(br->ofproto, &old_snoops);
- svec_sort_unique(&old_snoops);
-
- if (!svec_equal(&snoops, &old_snoops)) {
- ofproto_set_snoops(br->ofproto, &snoops);
- }
- svec_destroy(&snoops);
- svec_destroy(&old_snoops);
-
- mirror_reconfigure(br);
-}
-
-static void
-bridge_reconfigure_controller(struct bridge *br)
-{
- char *pfx = xasprintf("bridge.%s.controller", br->name);
- const char *controller;
-
- controller = bridge_get_controller(br);
- if ((br->controller != NULL) != (controller != NULL)) {
- ofproto_flush_flows(br->ofproto);
- }
- free(br->controller);
- br->controller = controller ? xstrdup(controller) : NULL;
-
- if (controller) {
- const char *fail_mode;
- int max_backoff, probe;
- int rate_limit, burst_limit;
-
- if (!strcmp(controller, "discover")) {
- bool update_resolv_conf = true;
-
- if (cfg_has("%s.update-resolv.conf", pfx)) {
- update_resolv_conf = cfg_get_bool(0, "%s.update-resolv.conf",
- pfx);
- }
- ofproto_set_discovery(br->ofproto, true,
- cfg_get_string(0, "%s.accept-regex", pfx),
- update_resolv_conf);
- } else {
- struct iface *local_iface;
- bool in_band;
-
- in_band = (!cfg_is_valid(CFG_BOOL | CFG_REQUIRED,
- "%s.in-band", pfx)
- || cfg_get_bool(0, "%s.in-band", pfx));
- ofproto_set_discovery(br->ofproto, false, NULL, NULL);
- ofproto_set_in_band(br->ofproto, in_band);
-
- local_iface = bridge_get_local_iface(br);
- if (local_iface
- && cfg_is_valid(CFG_IP | CFG_REQUIRED, "%s.ip", pfx)) {
- struct netdev *netdev = local_iface->netdev;
- struct in_addr ip, mask, gateway;
- ip.s_addr = cfg_get_ip(0, "%s.ip", pfx);
- mask.s_addr = cfg_get_ip(0, "%s.netmask", pfx);
- gateway.s_addr = cfg_get_ip(0, "%s.gateway", pfx);
-
- netdev_turn_flags_on(netdev, NETDEV_UP, true);
- if (!mask.s_addr) {
- mask.s_addr = guess_netmask(ip.s_addr);
- }
- if (!netdev_set_in4(netdev, ip, mask)) {
- VLOG_INFO("bridge %s: configured IP address "IP_FMT", "
- "netmask "IP_FMT,
- br->name, IP_ARGS(&ip.s_addr),
- IP_ARGS(&mask.s_addr));
- }
-
- if (gateway.s_addr) {
- if (!netdev_add_router(netdev, gateway)) {
- VLOG_INFO("bridge %s: configured gateway "IP_FMT,
- br->name, IP_ARGS(&gateway.s_addr));
- }
- }
- }
- }
-
- fail_mode = cfg_get_string(0, "%s.fail-mode", pfx);
- if (!fail_mode) {
- fail_mode = cfg_get_string(0, "mgmt.fail-mode");
- }
- ofproto_set_failure(br->ofproto,
- (!fail_mode
- || !strcmp(fail_mode, "standalone")
- || !strcmp(fail_mode, "open")));
-
- probe = cfg_get_int(0, "%s.inactivity-probe", pfx);
- if (probe < 5) {
- probe = cfg_get_int(0, "mgmt.inactivity-probe");
- if (probe < 5) {
- probe = 5;
- }
- }
- ofproto_set_probe_interval(br->ofproto, probe);
-
- max_backoff = cfg_get_int(0, "%s.max-backoff", pfx);
- if (!max_backoff) {
- max_backoff = cfg_get_int(0, "mgmt.max-backoff");
- if (!max_backoff) {
- max_backoff = 8;
- }
- }
- ofproto_set_max_backoff(br->ofproto, max_backoff);
-
- rate_limit = cfg_get_int(0, "%s.rate-limit", pfx);
- if (!rate_limit) {
- rate_limit = cfg_get_int(0, "mgmt.rate-limit");
- }
- burst_limit = cfg_get_int(0, "%s.burst-limit", pfx);
- if (!burst_limit) {
- burst_limit = cfg_get_int(0, "mgmt.burst-limit");
- }
- ofproto_set_rate_limit(br->ofproto, rate_limit, burst_limit);
-
- ofproto_set_stp(br->ofproto, cfg_get_bool(0, "%s.stp", pfx));
-
- if (cfg_has("%s.commands.acl", pfx)) {
- struct svec command_acls;
- char *command_acl;
-
- svec_init(&command_acls);
- cfg_get_all_strings(&command_acls, "%s.commands.acl", pfx);
- command_acl = svec_join(&command_acls, ",", "");
-
- ofproto_set_remote_execution(br->ofproto, command_acl,
- cfg_get_string(0, "%s.commands.dir",
- pfx));
-
- svec_destroy(&command_acls);
- free(command_acl);
- } else {
- ofproto_set_remote_execution(br->ofproto, NULL, NULL);
- }
- } else {
- union ofp_action action;
- flow_t flow;
-
- /* Set up a flow that matches every packet and directs them to
- * OFPP_NORMAL (which goes to us). */
- memset(&action, 0, sizeof action);
- action.type = htons(OFPAT_OUTPUT);
- action.output.len = htons(sizeof action);
- action.output.port = htons(OFPP_NORMAL);
- memset(&flow, 0, sizeof flow);
- ofproto_add_flow(br->ofproto, &flow, OFPFW_ALL, 0,
- &action, 1, 0);
-
- ofproto_set_in_band(br->ofproto, false);
- ofproto_set_max_backoff(br->ofproto, 1);
- ofproto_set_probe_interval(br->ofproto, 5);
- ofproto_set_failure(br->ofproto, false);
- ofproto_set_stp(br->ofproto, false);
- }
- free(pfx);
-
- ofproto_set_controller(br->ofproto, br->controller);
-}
-
-static void
-bridge_get_all_ifaces(const struct bridge *br, struct svec *ifaces)
-{
- size_t i, j;
-
- svec_init(ifaces);
- for (i = 0; i < br->n_ports; i++) {
- struct port *port = br->ports[i];
- for (j = 0; j < port->n_ifaces; j++) {
- struct iface *iface = port->ifaces[j];
- svec_add(ifaces, iface->name);
- }
- if (port->n_ifaces > 1
- && cfg_get_bool(0, "bonding.%s.fake-iface", port->name)) {
- svec_add(ifaces, port->name);
- }
- }
- svec_sort_unique(ifaces);
-}
-
-/* For robustness, in case the administrator moves around datapath ports behind
- * our back, we re-check all the datapath port numbers here.
- *
- * This function will set the 'dp_ifidx' members of interfaces that have
- * disappeared to -1, so only call this function from a context where those
- * 'struct iface's will be removed from the bridge. Otherwise, the -1
- * 'dp_ifidx'es will cause trouble later when we try to send them to the
- * datapath, which doesn't support UINT16_MAX+1 ports. */
-static void
-bridge_fetch_dp_ifaces(struct bridge *br)
-{
- struct odp_port *dpif_ports;
- size_t n_dpif_ports;
- size_t i, j;
-
- /* Reset all interface numbers. */
- for (i = 0; i < br->n_ports; i++) {
- struct port *port = br->ports[i];
- for (j = 0; j < port->n_ifaces; j++) {
- struct iface *iface = port->ifaces[j];
- iface->dp_ifidx = -1;
- }
- }
- port_array_clear(&br->ifaces);
-
- dpif_port_list(br->dpif, &dpif_ports, &n_dpif_ports);
- for (i = 0; i < n_dpif_ports; i++) {
- struct odp_port *p = &dpif_ports[i];
- struct iface *iface = iface_lookup(br, p->devname);
- if (iface) {
- if (iface->dp_ifidx >= 0) {
- VLOG_WARN("%s reported interface %s twice",
- dpif_name(br->dpif), p->devname);
- } else if (iface_from_dp_ifidx(br, p->port)) {
- VLOG_WARN("%s reported interface %"PRIu16" twice",
- dpif_name(br->dpif), p->port);
- } else {
- port_array_set(&br->ifaces, p->port, iface);
- iface->dp_ifidx = p->port;
- }
- }
- }
- free(dpif_ports);
-}
-\f
-/* Bridge packet processing functions. */
-
-static int
-bond_hash(const uint8_t mac[ETH_ADDR_LEN])
-{
- return hash_bytes(mac, ETH_ADDR_LEN, 0) & BOND_MASK;
-}
-
-static struct bond_entry *
-lookup_bond_entry(const struct port *port, const uint8_t mac[ETH_ADDR_LEN])
-{
- return &port->bond_hash[bond_hash(mac)];
-}
-
-static int
-bond_choose_iface(const struct port *port)
-{
- size_t i;
- for (i = 0; i < port->n_ifaces; i++) {
- if (port->ifaces[i]->enabled) {
- return i;
- }
- }
- return -1;
-}
-
-static bool
-choose_output_iface(const struct port *port, const uint8_t *dl_src,
- uint16_t *dp_ifidx, tag_type *tags)
-{
- struct iface *iface;
-
- assert(port->n_ifaces);
- if (port->n_ifaces == 1) {
- iface = port->ifaces[0];
- } else {
- struct bond_entry *e = lookup_bond_entry(port, dl_src);
- if (e->iface_idx < 0 || e->iface_idx >= port->n_ifaces
- || !port->ifaces[e->iface_idx]->enabled) {
- /* XXX select interface properly. The current interface selection
- * is only good for testing the rebalancing code. */
- e->iface_idx = bond_choose_iface(port);
- if (e->iface_idx < 0) {
- *tags |= port->no_ifaces_tag;
- return false;
- }
- e->iface_tag = tag_create_random();
- ((struct port *) port)->bond_compat_is_stale = true;
- }
- *tags |= e->iface_tag;
- iface = port->ifaces[e->iface_idx];
- }
- *dp_ifidx = iface->dp_ifidx;
- *tags |= iface->tag; /* Currently only used for bonding. */
- return true;
-}
-
-static void
-bond_link_status_update(struct iface *iface, bool carrier)
-{
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
- struct port *port = iface->port;
-
- if ((carrier == iface->enabled) == (iface->delay_expires == LLONG_MAX)) {
- /* Nothing to do. */
- return;
- }
- VLOG_INFO_RL(&rl, "interface %s: carrier %s",
- iface->name, carrier ? "detected" : "dropped");
- if (carrier == iface->enabled) {
- iface->delay_expires = LLONG_MAX;
- VLOG_INFO_RL(&rl, "interface %s: will not be %s",
- iface->name, carrier ? "disabled" : "enabled");
- } else if (carrier && port->updelay && port->active_iface < 0) {
- iface->delay_expires = time_msec();
- VLOG_INFO_RL(&rl, "interface %s: skipping %d ms updelay since no "
- "other interface is up", iface->name, port->updelay);
- } else {
- int delay = carrier ? port->updelay : port->downdelay;
- iface->delay_expires = time_msec() + delay;
- if (delay) {
- VLOG_INFO_RL(&rl,
- "interface %s: will be %s if it stays %s for %d ms",
- iface->name,
- carrier ? "enabled" : "disabled",
- carrier ? "up" : "down",
- delay);
- }
- }
-}
-
-static void
-bond_choose_active_iface(struct port *port)
-{
- static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
-
- port->active_iface = bond_choose_iface(port);
- port->active_iface_tag = tag_create_random();
- if (port->active_iface >= 0) {
- VLOG_INFO_RL(&rl, "port %s: active interface is now %s",
- port->name, port->ifaces[port->active_iface]->name);
- } else {
- VLOG_WARN_RL(&rl, "port %s: all ports disabled, no active interface",
- port->name);
- }
-}
-
-static void
-bond_enable_slave(struct iface *iface, bool enable)
-{
- struct port *port = iface->port;
- struct bridge *br = port->bridge;
-
- iface->delay_expires = LLONG_MAX;
- if (enable == iface->enabled) {
- return;
- }
-
- iface->enabled = enable;
- if (!iface->enabled) {
- VLOG_WARN("interface %s: disabled", iface->name);
- ofproto_revalidate(br->ofproto, iface->tag);
- if (iface->port_ifidx == port->active_iface) {
- ofproto_revalidate(br->ofproto,
- port->active_iface_tag);
- bond_choose_active_iface(port);
- }
- bond_send_learning_packets(port);
- } else {
- VLOG_WARN("interface %s: enabled", iface->name);
- if (port->active_iface < 0) {
- ofproto_revalidate(br->ofproto, port->no_ifaces_tag);
- bond_choose_active_iface(port);
- bond_send_learning_packets(port);
- }
- iface->tag = tag_create_random();
- }
- port_update_bond_compat(port);
-}
-
-static void
-bond_run(struct bridge *br)
-{
- size_t i, j;
-
- for (i = 0; i < br->n_ports; i++) {
- struct port *port = br->ports[i];