1 /* Copyright (c) 2008, 2009, 2010 Nicira Networks
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
20 #include <arpa/inet.h>
23 #include <sys/socket.h>
25 #include <openflow/openflow.h>
30 #include <sys/socket.h>
31 #include <sys/types.h>
36 #include "dynamic-string.h"
41 #include "mac-learning.h"
43 #include "xflow-util.h"
44 #include "ofp-print.h"
46 #include "ofproto/netflow.h"
47 #include "ofproto/ofproto.h"
48 #include "ovsdb-data.h"
50 #include "poll-loop.h"
51 #include "port-array.h"
52 #include "proc-net-compat.h"
56 #include "socket-util.h"
57 #include "stream-ssl.h"
63 #include "vswitchd/vswitch-idl.h"
64 #include "xenserver.h"
68 #include "sflow_api.h"
70 VLOG_DEFINE_THIS_MODULE(bridge)
78 /* These members are always valid. */
79 struct port *port; /* Containing port. */
80 size_t port_ifidx; /* Index within containing port. */
81 char *name; /* Host network device name. */
82 tag_type tag; /* Tag associated with this interface. */
83 long long delay_expires; /* Time after which 'enabled' may change. */
85 /* These members are valid only after bridge_reconfigure() causes them to
87 int xf_ifidx; /* Index within kernel datapath. */
88 struct netdev *netdev; /* Network device. */
89 bool enabled; /* May be chosen for flows? */
90 const struct ovsrec_interface *cfg;
93 #define BOND_MASK 0xff
95 int iface_idx; /* Index of assigned iface, or -1 if none. */
96 uint64_t tx_bytes; /* Count of bytes recently transmitted. */
97 tag_type iface_tag; /* Tag associated with iface_idx. */
100 #define MAX_MIRRORS 32
101 typedef uint32_t mirror_mask_t;
102 #define MIRROR_MASK_C(X) UINT32_C(X)
103 BUILD_ASSERT_DECL(sizeof(mirror_mask_t) * CHAR_BIT >= MAX_MIRRORS);
105 struct bridge *bridge;
108 struct uuid uuid; /* UUID of this "mirror" record in database. */
110 /* Selection criteria. */
111 struct shash src_ports; /* Name is port name; data is always NULL. */
112 struct shash dst_ports; /* Name is port name; data is always NULL. */
117 struct port *out_port;
121 #define FLOOD_PORT ((struct port *) 1) /* The 'flood' output port. */
123 struct bridge *bridge;
125 int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */
126 unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1.
127 * NULL if all VLANs are trunked. */
128 const struct ovsrec_port *cfg;
131 /* An ordinary bridge port has 1 interface.
132 * A bridge port for bonding has at least 2 interfaces. */
133 struct iface **ifaces;
134 size_t n_ifaces, allocated_ifaces;
137 struct bond_entry *bond_hash; /* An array of (BOND_MASK + 1) elements. */
138 int active_iface; /* Ifidx on which bcasts accepted, or -1. */
139 tag_type active_iface_tag; /* Tag for bcast flows. */
140 tag_type no_ifaces_tag; /* Tag for flows when all ifaces disabled. */
141 int updelay, downdelay; /* Delay before iface goes up/down, in ms. */
142 bool bond_compat_is_stale; /* Need to call port_update_bond_compat()? */
143 bool bond_fake_iface; /* Fake a bond interface for legacy compat? */
144 long bond_next_fake_iface_update; /* Next update to fake bond stats. */
145 int bond_rebalance_interval; /* Interval between rebalances, in ms. */
146 long long int bond_next_rebalance; /* Next rebalancing time. */
148 /* Port mirroring info. */
149 mirror_mask_t src_mirrors; /* Mirrors triggered when packet received. */
150 mirror_mask_t dst_mirrors; /* Mirrors triggered when packet sent. */
151 bool is_mirror_output_port; /* Does port mirroring send frames here? */
154 #define DP_MAX_PORTS 255
156 struct list node; /* Node in global list of bridges. */
157 char *name; /* User-specified arbitrary name. */
158 struct mac_learning *ml; /* MAC learning table. */
159 uint8_t default_ea[ETH_ADDR_LEN]; /* Default MAC. */
160 const struct ovsrec_bridge *cfg;
162 /* OpenFlow switch processing. */
163 struct ofproto *ofproto; /* OpenFlow switch. */
165 /* Kernel datapath information. */
166 struct xfif *xfif; /* Datapath. */
167 struct port_array ifaces; /* Indexed by kernel datapath port number. */
171 size_t n_ports, allocated_ports;
172 struct shash iface_by_name; /* "struct iface"s indexed by name. */
173 struct shash port_by_name; /* "struct port"s indexed by name. */
176 bool has_bonded_ports;
181 /* Port mirroring. */
182 struct mirror *mirrors[MAX_MIRRORS];
185 /* List of all bridges. */
186 static struct list all_bridges = LIST_INITIALIZER(&all_bridges);
188 /* OVSDB IDL used to obtain configuration. */
189 static struct ovsdb_idl *idl;
191 /* Each time this timer expires, the bridge fetches statistics for every
192 * interface and pushes them into the database. */
193 #define IFACE_STATS_INTERVAL (5 * 1000) /* In milliseconds. */
194 static long long int iface_stats_timer = LLONG_MIN;
196 static struct bridge *bridge_create(const struct ovsrec_bridge *br_cfg);
197 static void bridge_destroy(struct bridge *);
198 static struct bridge *bridge_lookup(const char *name);
199 static unixctl_cb_func bridge_unixctl_dump_flows;
200 static unixctl_cb_func bridge_unixctl_reconnect;
201 static int bridge_run_one(struct bridge *);
202 static size_t bridge_get_controllers(const struct ovsrec_open_vswitch *ovs_cfg,
203 const struct bridge *br,
204 struct ovsrec_controller ***controllersp);
205 static void bridge_reconfigure_one(const struct ovsrec_open_vswitch *,
207 static void bridge_reconfigure_remotes(const struct ovsrec_open_vswitch *,
209 const struct sockaddr_in *managers,
211 static void bridge_get_all_ifaces(const struct bridge *, struct shash *ifaces);
212 static void bridge_fetch_dp_ifaces(struct bridge *);
213 static void bridge_flush(struct bridge *);
214 static void bridge_pick_local_hw_addr(struct bridge *,
215 uint8_t ea[ETH_ADDR_LEN],
216 struct iface **hw_addr_iface);
217 static uint64_t bridge_pick_datapath_id(struct bridge *,
218 const uint8_t bridge_ea[ETH_ADDR_LEN],
219 struct iface *hw_addr_iface);
220 static struct iface *bridge_get_local_iface(struct bridge *);
221 static uint64_t dpid_from_hash(const void *, size_t nbytes);
223 static unixctl_cb_func bridge_unixctl_fdb_show;
225 static void bond_init(void);
226 static void bond_run(struct bridge *);
227 static void bond_wait(struct bridge *);
228 static void bond_rebalance_port(struct port *);
229 static void bond_send_learning_packets(struct port *);
230 static void bond_enable_slave(struct iface *iface, bool enable);
232 static struct port *port_create(struct bridge *, const char *name);
233 static void port_reconfigure(struct port *, const struct ovsrec_port *);
234 static void port_del_ifaces(struct port *, const struct ovsrec_port *);
235 static void port_destroy(struct port *);
236 static struct port *port_lookup(const struct bridge *, const char *name);
237 static struct iface *port_lookup_iface(const struct port *, const char *name);
238 static struct port *port_from_xf_ifidx(const struct bridge *,
240 static void port_update_bond_compat(struct port *);
241 static void port_update_vlan_compat(struct port *);
242 static void port_update_bonding(struct port *);
244 static void mirror_create(struct bridge *, struct ovsrec_mirror *);
245 static void mirror_destroy(struct mirror *);
246 static void mirror_reconfigure(struct bridge *);
247 static void mirror_reconfigure_one(struct mirror *, struct ovsrec_mirror *);
248 static bool vlan_is_mirrored(const struct mirror *, int vlan);
250 static struct iface *iface_create(struct port *port,
251 const struct ovsrec_interface *if_cfg);
252 static void iface_destroy(struct iface *);
253 static struct iface *iface_lookup(const struct bridge *, const char *name);
254 static struct iface *iface_from_xf_ifidx(const struct bridge *,
256 static bool iface_is_internal(const struct bridge *, const char *name);
257 static void iface_set_mac(struct iface *);
258 static void iface_update_qos(struct iface *, const struct ovsrec_qos *);
260 /* Hooks into ofproto processing. */
261 static struct ofhooks bridge_ofhooks;
263 /* Public functions. */
265 /* Initializes the bridge module, configuring it to obtain its configuration
266 * from an OVSDB server accessed over 'remote', which should be a string in a
267 * form acceptable to ovsdb_idl_create(). */
269 bridge_init(const char *remote)
271 /* Create connection to database. */
272 idl = ovsdb_idl_create(remote, &ovsrec_idl_class);
274 /* Register unixctl commands. */
275 unixctl_command_register("fdb/show", bridge_unixctl_fdb_show, NULL);
276 unixctl_command_register("bridge/dump-flows", bridge_unixctl_dump_flows,
278 unixctl_command_register("bridge/reconnect", bridge_unixctl_reconnect,
283 /* Performs configuration that is only necessary once at ovs-vswitchd startup,
284 * but for which the ovs-vswitchd configuration 'cfg' is required. */
286 bridge_configure_once(const struct ovsrec_open_vswitch *cfg)
288 static bool already_configured_once;
289 struct svec bridge_names;
290 struct svec xfif_names, xfif_types;
293 /* Only do this once per ovs-vswitchd run. */
294 if (already_configured_once) {
297 already_configured_once = true;
299 iface_stats_timer = time_msec() + IFACE_STATS_INTERVAL;
301 /* Get all the configured bridges' names from 'cfg' into 'bridge_names'. */
302 svec_init(&bridge_names);
303 for (i = 0; i < cfg->n_bridges; i++) {
304 svec_add(&bridge_names, cfg->bridges[i]->name);
306 svec_sort(&bridge_names);
308 /* Iterate over all system xfifs and delete any of them that do not appear
310 svec_init(&xfif_names);
311 svec_init(&xfif_types);
312 xf_enumerate_types(&xfif_types);
313 for (i = 0; i < xfif_types.n; i++) {
318 xf_enumerate_names(xfif_types.names[i], &xfif_names);
320 /* For each xfif... */
321 for (j = 0; j < xfif_names.n; j++) {
322 retval = xfif_open(xfif_names.names[j], xfif_types.names[i], &xfif);
324 struct svec all_names;
327 /* ...check whether any of its names is in 'bridge_names'. */
328 svec_init(&all_names);
329 xfif_get_all_names(xfif, &all_names);
330 for (k = 0; k < all_names.n; k++) {
331 if (svec_contains(&bridge_names, all_names.names[k])) {
336 /* No. Delete the xfif. */
340 svec_destroy(&all_names);
345 svec_destroy(&bridge_names);
346 svec_destroy(&xfif_names);
347 svec_destroy(&xfif_types);
352 bridge_configure_ssl(const struct ovsrec_ssl *ssl)
354 /* XXX SSL should be configurable on a per-bridge basis. */
356 stream_ssl_set_private_key_file(ssl->private_key);
357 stream_ssl_set_certificate_file(ssl->certificate);
358 stream_ssl_set_ca_cert_file(ssl->ca_cert, ssl->bootstrap_ca_cert);
363 /* Attempt to create the network device 'iface_name' through the netdev
366 set_up_iface(const struct ovsrec_interface *iface_cfg, struct iface *iface,
369 struct shash options;
373 shash_init(&options);
374 for (i = 0; i < iface_cfg->n_options; i++) {
375 shash_add(&options, iface_cfg->key_options[i],
376 xstrdup(iface_cfg->value_options[i]));
380 struct netdev_options netdev_options;
382 memset(&netdev_options, 0, sizeof netdev_options);
383 netdev_options.name = iface_cfg->name;
384 if (!strcmp(iface_cfg->type, "internal")) {
385 /* An "internal" config type maps to a netdev "system" type. */
386 netdev_options.type = "system";
388 netdev_options.type = iface_cfg->type;
390 netdev_options.args = &options;
391 netdev_options.ethertype = NETDEV_ETH_TYPE_NONE;
392 error = netdev_open(&netdev_options, &iface->netdev);
395 netdev_get_carrier(iface->netdev, &iface->enabled);
397 } else if (iface->netdev) {
398 const char *netdev_type = netdev_get_type(iface->netdev);
399 const char *iface_type = iface_cfg->type && strlen(iface_cfg->type)
400 ? iface_cfg->type : NULL;
402 /* An "internal" config type maps to a netdev "system" type. */
403 if (iface_type && !strcmp(iface_type, "internal")) {
404 iface_type = "system";
407 if (!iface_type || !strcmp(netdev_type, iface_type)) {
408 error = netdev_reconfigure(iface->netdev, &options);
410 VLOG_WARN("%s: attempting change device type from %s to %s",
411 iface_cfg->name, netdev_type, iface_type);
415 shash_destroy_free_data(&options);
421 reconfigure_iface(const struct ovsrec_interface *iface_cfg, struct iface *iface)
423 return set_up_iface(iface_cfg, iface, false);
427 check_iface_netdev(struct bridge *br OVS_UNUSED, struct iface *iface,
428 void *aux OVS_UNUSED)
430 if (!iface->netdev) {
431 int error = set_up_iface(iface->cfg, iface, true);
433 VLOG_WARN("could not open netdev on %s, dropping: %s", iface->name,
443 check_iface_xf_ifidx(struct bridge *br, struct iface *iface,
444 void *aux OVS_UNUSED)
446 if (iface->xf_ifidx >= 0) {
447 VLOG_DBG("%s has interface %s on port %d",
449 iface->name, iface->xf_ifidx);
452 VLOG_ERR("%s interface not in %s, dropping",
453 iface->name, xfif_name(br->xfif));
459 set_iface_properties(struct bridge *br OVS_UNUSED, struct iface *iface,
460 void *aux OVS_UNUSED)
462 /* Set policing attributes. */
463 netdev_set_policing(iface->netdev,
464 iface->cfg->ingress_policing_rate,
465 iface->cfg->ingress_policing_burst);
467 /* Set MAC address of internal interfaces other than the local
469 if (iface->xf_ifidx != XFLOWP_LOCAL
470 && iface_is_internal(br, iface->name)) {
471 iface_set_mac(iface);
477 /* Calls 'cb' for each interfaces in 'br', passing along the 'aux' argument.
478 * Deletes from 'br' all the interfaces for which 'cb' returns false, and then
479 * deletes from 'br' any ports that no longer have any interfaces. */
481 iterate_and_prune_ifaces(struct bridge *br,
482 bool (*cb)(struct bridge *, struct iface *,
488 for (i = 0; i < br->n_ports; ) {
489 struct port *port = br->ports[i];
490 for (j = 0; j < port->n_ifaces; ) {
491 struct iface *iface = port->ifaces[j];
492 if (cb(br, iface, aux)) {
495 iface_destroy(iface);
499 if (port->n_ifaces) {
502 VLOG_ERR("%s port has no interfaces, dropping", port->name);
508 /* Looks at the list of managers in 'ovs_cfg' and extracts their remote IP
509 * addresses and ports into '*managersp' and '*n_managersp'. The caller is
510 * responsible for freeing '*managersp' (with free()).
512 * You may be asking yourself "why does ovs-vswitchd care?", because
513 * ovsdb-server is responsible for connecting to the managers, and ovs-vswitchd
514 * should not be and in fact is not directly involved in that. But
515 * ovs-vswitchd needs to make sure that ovsdb-server can reach the managers, so
516 * it has to tell in-band control where the managers are to enable that.
519 collect_managers(const struct ovsrec_open_vswitch *ovs_cfg,
520 struct sockaddr_in **managersp, size_t *n_managersp)
522 struct sockaddr_in *managers = NULL;
523 size_t n_managers = 0;
525 if (ovs_cfg->n_managers > 0) {
528 managers = xmalloc(ovs_cfg->n_managers * sizeof *managers);
529 for (i = 0; i < ovs_cfg->n_managers; i++) {
530 const char *name = ovs_cfg->managers[i];
531 struct sockaddr_in *sin = &managers[i];
533 if ((!strncmp(name, "tcp:", 4)
534 && inet_parse_active(name + 4, JSONRPC_TCP_PORT, sin)) ||
535 (!strncmp(name, "ssl:", 4)
536 && inet_parse_active(name + 4, JSONRPC_SSL_PORT, sin))) {
542 *managersp = managers;
543 *n_managersp = n_managers;
547 bridge_reconfigure(const struct ovsrec_open_vswitch *ovs_cfg)
549 struct shash old_br, new_br;
550 struct shash_node *node;
551 struct bridge *br, *next;
552 struct sockaddr_in *managers;
555 int sflow_bridge_number;
557 COVERAGE_INC(bridge_reconfigure);
559 collect_managers(ovs_cfg, &managers, &n_managers);
561 /* Collect old and new bridges. */
564 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
565 shash_add(&old_br, br->name, br);
567 for (i = 0; i < ovs_cfg->n_bridges; i++) {
568 const struct ovsrec_bridge *br_cfg = ovs_cfg->bridges[i];
569 if (!shash_add_once(&new_br, br_cfg->name, br_cfg)) {
570 VLOG_WARN("more than one bridge named %s", br_cfg->name);
574 /* Get rid of deleted bridges and add new bridges. */
575 LIST_FOR_EACH_SAFE (br, next, struct bridge, node, &all_bridges) {
576 struct ovsrec_bridge *br_cfg = shash_find_data(&new_br, br->name);
583 SHASH_FOR_EACH (node, &new_br) {
584 const char *br_name = node->name;
585 const struct ovsrec_bridge *br_cfg = node->data;
586 br = shash_find_data(&old_br, br_name);
588 /* If the bridge datapath type has changed, we need to tear it
589 * down and recreate. */
590 if (strcmp(br->cfg->datapath_type, br_cfg->datapath_type)) {
592 bridge_create(br_cfg);
595 bridge_create(br_cfg);
598 shash_destroy(&old_br);
599 shash_destroy(&new_br);
603 bridge_configure_ssl(ovs_cfg->ssl);
606 /* Reconfigure all bridges. */
607 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
608 bridge_reconfigure_one(ovs_cfg, br);
611 /* Add and delete ports on all datapaths.
613 * The kernel will reject any attempt to add a given port to a datapath if
614 * that port already belongs to a different datapath, so we must do all
615 * port deletions before any port additions. */
616 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
617 struct xflow_port *xfif_ports;
619 struct shash want_ifaces;
621 xfif_port_list(br->xfif, &xfif_ports, &n_xfif_ports);
622 bridge_get_all_ifaces(br, &want_ifaces);
623 for (i = 0; i < n_xfif_ports; i++) {
624 const struct xflow_port *p = &xfif_ports[i];
625 if (!shash_find(&want_ifaces, p->devname)
626 && strcmp(p->devname, br->name)) {
627 int retval = xfif_port_del(br->xfif, p->port);
629 VLOG_ERR("failed to remove %s interface from %s: %s",
630 p->devname, xfif_name(br->xfif),
635 shash_destroy(&want_ifaces);
638 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
639 struct xflow_port *xfif_ports;
641 struct shash cur_ifaces, want_ifaces;
642 struct shash_node *node;
644 /* Get the set of interfaces currently in this datapath. */
645 xfif_port_list(br->xfif, &xfif_ports, &n_xfif_ports);
646 shash_init(&cur_ifaces);
647 for (i = 0; i < n_xfif_ports; i++) {
648 const char *name = xfif_ports[i].devname;
649 shash_add_once(&cur_ifaces, name, NULL);
653 /* Get the set of interfaces we want on this datapath. */
654 bridge_get_all_ifaces(br, &want_ifaces);
656 SHASH_FOR_EACH (node, &want_ifaces) {
657 const char *if_name = node->name;
658 struct iface *iface = node->data;
660 if (shash_find(&cur_ifaces, if_name)) {
661 /* Already exists, just reconfigure it. */
663 reconfigure_iface(iface->cfg, iface);
666 /* Need to add to datapath. */
670 /* Add to datapath. */
671 internal = iface_is_internal(br, if_name);
672 error = xfif_port_add(br->xfif, if_name,
673 internal ? XFLOW_PORT_INTERNAL : 0, NULL);
674 if (error == EFBIG) {
675 VLOG_ERR("ran out of valid port numbers on %s",
676 xfif_name(br->xfif));
679 VLOG_ERR("failed to add %s interface to %s: %s",
680 if_name, xfif_name(br->xfif), strerror(error));
684 shash_destroy(&cur_ifaces);
685 shash_destroy(&want_ifaces);
687 sflow_bridge_number = 0;
688 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
691 struct iface *local_iface;
692 struct iface *hw_addr_iface;
695 bridge_fetch_dp_ifaces(br);
697 iterate_and_prune_ifaces(br, check_iface_netdev, NULL);
698 iterate_and_prune_ifaces(br, check_iface_xf_ifidx, NULL);
700 /* Pick local port hardware address, datapath ID. */
701 bridge_pick_local_hw_addr(br, ea, &hw_addr_iface);
702 local_iface = bridge_get_local_iface(br);
704 int error = netdev_set_etheraddr(local_iface->netdev, ea);
706 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
707 VLOG_ERR_RL(&rl, "bridge %s: failed to set bridge "
708 "Ethernet address: %s",
709 br->name, strerror(error));
713 dpid = bridge_pick_datapath_id(br, ea, hw_addr_iface);
714 ofproto_set_datapath_id(br->ofproto, dpid);
716 dpid_string = xasprintf("%016"PRIx64, dpid);
717 ovsrec_bridge_set_datapath_id(br->cfg, dpid_string);
720 /* Set NetFlow configuration on this bridge. */
721 if (br->cfg->netflow) {
722 struct ovsrec_netflow *nf_cfg = br->cfg->netflow;
723 struct netflow_options opts;
725 memset(&opts, 0, sizeof opts);
727 xfif_get_netflow_ids(br->xfif, &opts.engine_type, &opts.engine_id);
728 if (nf_cfg->engine_type) {
729 opts.engine_type = *nf_cfg->engine_type;
731 if (nf_cfg->engine_id) {
732 opts.engine_id = *nf_cfg->engine_id;
735 opts.active_timeout = nf_cfg->active_timeout;
736 if (!opts.active_timeout) {
737 opts.active_timeout = -1;
738 } else if (opts.active_timeout < 0) {
739 VLOG_WARN("bridge %s: active timeout interval set to negative "
740 "value, using default instead (%d seconds)", br->name,
741 NF_ACTIVE_TIMEOUT_DEFAULT);
742 opts.active_timeout = -1;
745 opts.add_id_to_iface = nf_cfg->add_id_to_interface;
746 if (opts.add_id_to_iface) {
747 if (opts.engine_id > 0x7f) {
748 VLOG_WARN("bridge %s: netflow port mangling may conflict "
749 "with another vswitch, choose an engine id less "
750 "than 128", br->name);
752 if (br->n_ports > 508) {
753 VLOG_WARN("bridge %s: netflow port mangling will conflict "
754 "with another port when more than 508 ports are "
759 opts.collectors.n = nf_cfg->n_targets;
760 opts.collectors.names = nf_cfg->targets;
761 if (ofproto_set_netflow(br->ofproto, &opts)) {
762 VLOG_ERR("bridge %s: problem setting netflow collectors",
766 ofproto_set_netflow(br->ofproto, NULL);
769 /* Set sFlow configuration on this bridge. */
770 if (br->cfg->sflow) {
771 const struct ovsrec_sflow *sflow_cfg = br->cfg->sflow;
772 struct ovsrec_controller **controllers;
773 struct ofproto_sflow_options oso;
774 size_t n_controllers;
777 memset(&oso, 0, sizeof oso);
779 oso.targets.n = sflow_cfg->n_targets;
780 oso.targets.names = sflow_cfg->targets;
782 oso.sampling_rate = SFL_DEFAULT_SAMPLING_RATE;
783 if (sflow_cfg->sampling) {
784 oso.sampling_rate = *sflow_cfg->sampling;
787 oso.polling_interval = SFL_DEFAULT_POLLING_INTERVAL;
788 if (sflow_cfg->polling) {
789 oso.polling_interval = *sflow_cfg->polling;
792 oso.header_len = SFL_DEFAULT_HEADER_SIZE;
793 if (sflow_cfg->header) {
794 oso.header_len = *sflow_cfg->header;
797 oso.sub_id = sflow_bridge_number++;
798 oso.agent_device = sflow_cfg->agent;
800 oso.control_ip = NULL;
801 n_controllers = bridge_get_controllers(ovs_cfg, br, &controllers);
802 for (i = 0; i < n_controllers; i++) {
803 if (controllers[i]->local_ip) {
804 oso.control_ip = controllers[i]->local_ip;
808 ofproto_set_sflow(br->ofproto, &oso);
810 /* Do not destroy oso.targets because it is owned by sflow_cfg. */
812 ofproto_set_sflow(br->ofproto, NULL);
815 /* Update the controller and related settings. It would be more
816 * straightforward to call this from bridge_reconfigure_one(), but we
817 * can't do it there for two reasons. First, and most importantly, at
818 * that point we don't know the xf_ifidx of any interfaces that have
819 * been added to the bridge (because we haven't actually added them to
820 * the datapath). Second, at that point we haven't set the datapath ID
821 * yet; when a controller is configured, resetting the datapath ID will
822 * immediately disconnect from the controller, so it's better to set
823 * the datapath ID before the controller. */
824 bridge_reconfigure_remotes(ovs_cfg, br, managers, n_managers);
826 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
827 for (i = 0; i < br->n_ports; i++) {
828 struct port *port = br->ports[i];
831 port_update_vlan_compat(port);
832 port_update_bonding(port);
834 for (j = 0; j < port->n_ifaces; j++) {
835 iface_update_qos(port->ifaces[j], port->cfg->qos);
839 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
840 iterate_and_prune_ifaces(br, set_iface_properties, NULL);
847 get_ovsrec_key_value(const struct ovsdb_idl_row *row,
848 const struct ovsdb_idl_column *column,
851 const struct ovsdb_datum *datum;
852 union ovsdb_atom atom;
855 datum = ovsdb_idl_get(row, column, OVSDB_TYPE_STRING, OVSDB_TYPE_STRING);
856 atom.string = (char *) key;
857 idx = ovsdb_datum_find_key(datum, &atom, OVSDB_TYPE_STRING);
858 return idx == UINT_MAX ? NULL : datum->values[idx].string;
862 bridge_get_other_config(const struct ovsrec_bridge *br_cfg, const char *key)
864 return get_ovsrec_key_value(&br_cfg->header_,
865 &ovsrec_bridge_col_other_config, key);
869 bridge_pick_local_hw_addr(struct bridge *br, uint8_t ea[ETH_ADDR_LEN],
870 struct iface **hw_addr_iface)
876 *hw_addr_iface = NULL;
878 /* Did the user request a particular MAC? */
879 hwaddr = bridge_get_other_config(br->cfg, "hwaddr");
880 if (hwaddr && eth_addr_from_string(hwaddr, ea)) {
881 if (eth_addr_is_multicast(ea)) {
882 VLOG_ERR("bridge %s: cannot set MAC address to multicast "
883 "address "ETH_ADDR_FMT, br->name, ETH_ADDR_ARGS(ea));
884 } else if (eth_addr_is_zero(ea)) {
885 VLOG_ERR("bridge %s: cannot set MAC address to zero", br->name);
891 /* Otherwise choose the minimum non-local MAC address among all of the
893 memset(ea, 0xff, sizeof ea);
894 for (i = 0; i < br->n_ports; i++) {
895 struct port *port = br->ports[i];
896 uint8_t iface_ea[ETH_ADDR_LEN];
899 /* Mirror output ports don't participate. */
900 if (port->is_mirror_output_port) {
904 /* Choose the MAC address to represent the port. */
905 if (port->cfg->mac && eth_addr_from_string(port->cfg->mac, iface_ea)) {
906 /* Find the interface with this Ethernet address (if any) so that
907 * we can provide the correct devname to the caller. */
909 for (j = 0; j < port->n_ifaces; j++) {
910 struct iface *candidate = port->ifaces[j];
911 uint8_t candidate_ea[ETH_ADDR_LEN];
912 if (!netdev_get_etheraddr(candidate->netdev, candidate_ea)
913 && eth_addr_equals(iface_ea, candidate_ea)) {
918 /* Choose the interface whose MAC address will represent the port.
919 * The Linux kernel bonding code always chooses the MAC address of
920 * the first slave added to a bond, and the Fedora networking
921 * scripts always add slaves to a bond in alphabetical order, so
922 * for compatibility we choose the interface with the name that is
923 * first in alphabetical order. */
924 iface = port->ifaces[0];
925 for (j = 1; j < port->n_ifaces; j++) {
926 struct iface *candidate = port->ifaces[j];
927 if (strcmp(candidate->name, iface->name) < 0) {
932 /* The local port doesn't count (since we're trying to choose its
933 * MAC address anyway). */
934 if (iface->xf_ifidx == XFLOWP_LOCAL) {
939 error = netdev_get_etheraddr(iface->netdev, iface_ea);
941 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
942 VLOG_ERR_RL(&rl, "failed to obtain Ethernet address of %s: %s",
943 iface->name, strerror(error));
948 /* Compare against our current choice. */
949 if (!eth_addr_is_multicast(iface_ea) &&
950 !eth_addr_is_local(iface_ea) &&
951 !eth_addr_is_reserved(iface_ea) &&
952 !eth_addr_is_zero(iface_ea) &&
953 memcmp(iface_ea, ea, ETH_ADDR_LEN) < 0)
955 memcpy(ea, iface_ea, ETH_ADDR_LEN);
956 *hw_addr_iface = iface;
959 if (eth_addr_is_multicast(ea)) {
960 memcpy(ea, br->default_ea, ETH_ADDR_LEN);
961 *hw_addr_iface = NULL;
962 VLOG_WARN("bridge %s: using default bridge Ethernet "
963 "address "ETH_ADDR_FMT, br->name, ETH_ADDR_ARGS(ea));
965 VLOG_DBG("bridge %s: using bridge Ethernet address "ETH_ADDR_FMT,
966 br->name, ETH_ADDR_ARGS(ea));
970 /* Choose and returns the datapath ID for bridge 'br' given that the bridge
971 * Ethernet address is 'bridge_ea'. If 'bridge_ea' is the Ethernet address of
972 * an interface on 'br', then that interface must be passed in as
973 * 'hw_addr_iface'; if 'bridge_ea' was derived some other way, then
974 * 'hw_addr_iface' must be passed in as a null pointer. */
976 bridge_pick_datapath_id(struct bridge *br,
977 const uint8_t bridge_ea[ETH_ADDR_LEN],
978 struct iface *hw_addr_iface)
981 * The procedure for choosing a bridge MAC address will, in the most
982 * ordinary case, also choose a unique MAC that we can use as a datapath
983 * ID. In some special cases, though, multiple bridges will end up with
984 * the same MAC address. This is OK for the bridges, but it will confuse
985 * the OpenFlow controller, because each datapath needs a unique datapath
988 * Datapath IDs must be unique. It is also very desirable that they be
989 * stable from one run to the next, so that policy set on a datapath
992 const char *datapath_id;
995 datapath_id = bridge_get_other_config(br->cfg, "datapath-id");
996 if (datapath_id && dpid_from_string(datapath_id, &dpid)) {
1000 if (hw_addr_iface) {
1002 if (!netdev_get_vlan_vid(hw_addr_iface->netdev, &vlan)) {
1004 * A bridge whose MAC address is taken from a VLAN network device
1005 * (that is, a network device created with vconfig(8) or similar
1006 * tool) will have the same MAC address as a bridge on the VLAN
1007 * device's physical network device.
1009 * Handle this case by hashing the physical network device MAC
1010 * along with the VLAN identifier.
1012 uint8_t buf[ETH_ADDR_LEN + 2];
1013 memcpy(buf, bridge_ea, ETH_ADDR_LEN);
1014 buf[ETH_ADDR_LEN] = vlan >> 8;
1015 buf[ETH_ADDR_LEN + 1] = vlan;
1016 return dpid_from_hash(buf, sizeof buf);
1019 * Assume that this bridge's MAC address is unique, since it
1020 * doesn't fit any of the cases we handle specially.
1025 * A purely internal bridge, that is, one that has no non-virtual
1026 * network devices on it at all, is more difficult because it has no
1027 * natural unique identifier at all.
1029 * When the host is a XenServer, we handle this case by hashing the
1030 * host's UUID with the name of the bridge. Names of bridges are
1031 * persistent across XenServer reboots, although they can be reused if
1032 * an internal network is destroyed and then a new one is later
1033 * created, so this is fairly effective.
1035 * When the host is not a XenServer, we punt by using a random MAC
1036 * address on each run.
1038 const char *host_uuid = xenserver_get_host_uuid();
1040 char *combined = xasprintf("%s,%s", host_uuid, br->name);
1041 dpid = dpid_from_hash(combined, strlen(combined));
1047 return eth_addr_to_uint64(bridge_ea);
1051 dpid_from_hash(const void *data, size_t n)
1053 uint8_t hash[SHA1_DIGEST_SIZE];
1055 BUILD_ASSERT_DECL(sizeof hash >= ETH_ADDR_LEN);
1056 sha1_bytes(data, n, hash);
1057 eth_addr_mark_random(hash);
1058 return eth_addr_to_uint64(hash);
1062 iface_refresh_stats(struct iface *iface)
1068 static const struct iface_stat iface_stats[] = {
1069 { "rx_packets", offsetof(struct netdev_stats, rx_packets) },
1070 { "tx_packets", offsetof(struct netdev_stats, tx_packets) },
1071 { "rx_bytes", offsetof(struct netdev_stats, rx_bytes) },
1072 { "tx_bytes", offsetof(struct netdev_stats, tx_bytes) },
1073 { "rx_dropped", offsetof(struct netdev_stats, rx_dropped) },
1074 { "tx_dropped", offsetof(struct netdev_stats, tx_dropped) },
1075 { "rx_errors", offsetof(struct netdev_stats, rx_errors) },
1076 { "tx_errors", offsetof(struct netdev_stats, tx_errors) },
1077 { "rx_frame_err", offsetof(struct netdev_stats, rx_frame_errors) },
1078 { "rx_over_err", offsetof(struct netdev_stats, rx_over_errors) },
1079 { "rx_crc_err", offsetof(struct netdev_stats, rx_crc_errors) },
1080 { "collisions", offsetof(struct netdev_stats, collisions) },
1082 enum { N_STATS = ARRAY_SIZE(iface_stats) };
1083 const struct iface_stat *s;
1085 char *keys[N_STATS];
1086 int64_t values[N_STATS];
1089 struct netdev_stats stats;
1091 /* Intentionally ignore return value, since errors will set 'stats' to
1092 * all-1s, and we will deal with that correctly below. */
1093 netdev_get_stats(iface->netdev, &stats);
1096 for (s = iface_stats; s < &iface_stats[N_STATS]; s++) {
1097 uint64_t value = *(uint64_t *) (((char *) &stats) + s->offset);
1098 if (value != UINT64_MAX) {
1105 ovsrec_interface_set_statistics(iface->cfg, keys, values, n);
1111 bool datapath_destroyed;
1114 /* Let each bridge do the work that it needs to do. */
1115 datapath_destroyed = false;
1116 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
1117 int error = bridge_run_one(br);
1119 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1120 VLOG_ERR_RL(&rl, "bridge %s: datapath was destroyed externally, "
1121 "forcing reconfiguration", br->name);
1122 datapath_destroyed = true;
1126 /* (Re)configure if necessary. */
1127 if (ovsdb_idl_run(idl) || datapath_destroyed) {
1128 const struct ovsrec_open_vswitch *cfg = ovsrec_open_vswitch_first(idl);
1130 struct ovsdb_idl_txn *txn = ovsdb_idl_txn_create(idl);
1132 bridge_configure_once(cfg);
1133 bridge_reconfigure(cfg);
1135 ovsrec_open_vswitch_set_cur_cfg(cfg, cfg->next_cfg);
1136 ovsdb_idl_txn_commit(txn);
1137 ovsdb_idl_txn_destroy(txn); /* XXX */
1139 /* We still need to reconfigure to avoid dangling pointers to
1140 * now-destroyed ovsrec structures inside bridge data. */
1141 static const struct ovsrec_open_vswitch null_cfg;
1143 bridge_reconfigure(&null_cfg);
1147 /* Refresh interface stats if necessary. */
1148 if (time_msec() >= iface_stats_timer) {
1149 struct ovsdb_idl_txn *txn;
1151 txn = ovsdb_idl_txn_create(idl);
1152 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
1155 for (i = 0; i < br->n_ports; i++) {
1156 struct port *port = br->ports[i];
1159 for (j = 0; j < port->n_ifaces; j++) {
1160 struct iface *iface = port->ifaces[j];
1161 iface_refresh_stats(iface);
1165 ovsdb_idl_txn_commit(txn);
1166 ovsdb_idl_txn_destroy(txn); /* XXX */
1168 iface_stats_timer = time_msec() + IFACE_STATS_INTERVAL;
1177 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
1178 ofproto_wait(br->ofproto);
1179 if (ofproto_has_controller(br->ofproto)) {
1183 mac_learning_wait(br->ml);
1186 ovsdb_idl_wait(idl);
1187 poll_timer_wait_until(iface_stats_timer);
1190 /* Forces 'br' to revalidate all of its flows. This is appropriate when 'br''s
1191 * configuration changes. */
1193 bridge_flush(struct bridge *br)
1195 COVERAGE_INC(bridge_flush);
1196 ofproto_revalidate_all(br->ofproto);
1197 mac_learning_flush(br->ml);
1200 /* Returns the 'br' interface for the XFLOWP_LOCAL port, or null if 'br' has no
1201 * such interface. */
1202 static struct iface *
1203 bridge_get_local_iface(struct bridge *br)
1207 for (i = 0; i < br->n_ports; i++) {
1208 struct port *port = br->ports[i];
1209 for (j = 0; j < port->n_ifaces; j++) {
1210 struct iface *iface = port->ifaces[j];
1211 if (iface->xf_ifidx == XFLOWP_LOCAL) {
1220 /* Bridge unixctl user interface functions. */
1222 bridge_unixctl_fdb_show(struct unixctl_conn *conn,
1223 const char *args, void *aux OVS_UNUSED)
1225 struct ds ds = DS_EMPTY_INITIALIZER;
1226 const struct bridge *br;
1227 const struct mac_entry *e;
1229 br = bridge_lookup(args);
1231 unixctl_command_reply(conn, 501, "no such bridge");
1235 ds_put_cstr(&ds, " port VLAN MAC Age\n");
1236 LIST_FOR_EACH (e, struct mac_entry, lru_node, &br->ml->lrus) {
1237 if (e->port < 0 || e->port >= br->n_ports) {
1240 ds_put_format(&ds, "%5d %4d "ETH_ADDR_FMT" %3d\n",
1241 br->ports[e->port]->ifaces[0]->xf_ifidx,
1242 e->vlan, ETH_ADDR_ARGS(e->mac), mac_entry_age(e));
1244 unixctl_command_reply(conn, 200, ds_cstr(&ds));
1248 /* Bridge reconfiguration functions. */
1249 static struct bridge *
1250 bridge_create(const struct ovsrec_bridge *br_cfg)
1255 assert(!bridge_lookup(br_cfg->name));
1256 br = xzalloc(sizeof *br);
1258 error = xfif_create_and_open(br_cfg->name, br_cfg->datapath_type,
1264 xfif_flow_flush(br->xfif);
1266 error = ofproto_create(br_cfg->name, br_cfg->datapath_type, &bridge_ofhooks,
1269 VLOG_ERR("failed to create switch %s: %s", br_cfg->name,
1271 xfif_delete(br->xfif);
1272 xfif_close(br->xfif);
1277 br->name = xstrdup(br_cfg->name);
1279 br->ml = mac_learning_create();
1280 eth_addr_nicira_random(br->default_ea);
1282 port_array_init(&br->ifaces);
1284 shash_init(&br->port_by_name);
1285 shash_init(&br->iface_by_name);
1287 list_push_back(&all_bridges, &br->node);
1289 VLOG_INFO("created bridge %s on %s", br->name, xfif_name(br->xfif));
1295 bridge_destroy(struct bridge *br)
1300 while (br->n_ports > 0) {
1301 port_destroy(br->ports[br->n_ports - 1]);
1303 list_remove(&br->node);
1304 error = xfif_delete(br->xfif);
1305 if (error && error != ENOENT) {
1306 VLOG_ERR("failed to delete %s: %s",
1307 xfif_name(br->xfif), strerror(error));
1309 xfif_close(br->xfif);
1310 ofproto_destroy(br->ofproto);
1311 mac_learning_destroy(br->ml);
1312 port_array_destroy(&br->ifaces);
1313 shash_destroy(&br->port_by_name);
1314 shash_destroy(&br->iface_by_name);
1321 static struct bridge *
1322 bridge_lookup(const char *name)
1326 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
1327 if (!strcmp(br->name, name)) {
1334 /* Handle requests for a listing of all flows known by the OpenFlow
1335 * stack, including those normally hidden. */
1337 bridge_unixctl_dump_flows(struct unixctl_conn *conn,
1338 const char *args, void *aux OVS_UNUSED)
1343 br = bridge_lookup(args);
1345 unixctl_command_reply(conn, 501, "Unknown bridge");
1350 ofproto_get_all_flows(br->ofproto, &results);
1352 unixctl_command_reply(conn, 200, ds_cstr(&results));
1353 ds_destroy(&results);
1356 /* "bridge/reconnect [BRIDGE]": makes BRIDGE drop all of its controller
1357 * connections and reconnect. If BRIDGE is not specified, then all bridges
1358 * drop their controller connections and reconnect. */
1360 bridge_unixctl_reconnect(struct unixctl_conn *conn,
1361 const char *args, void *aux OVS_UNUSED)
1364 if (args[0] != '\0') {
1365 br = bridge_lookup(args);
1367 unixctl_command_reply(conn, 501, "Unknown bridge");
1370 ofproto_reconnect_controllers(br->ofproto);
1372 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
1373 ofproto_reconnect_controllers(br->ofproto);
1376 unixctl_command_reply(conn, 200, NULL);
1380 bridge_run_one(struct bridge *br)
1382 ofproto_revalidate(br->ofproto, mac_learning_run(br->ml));
1384 return ofproto_run(br->ofproto);
1388 bridge_get_controllers(const struct ovsrec_open_vswitch *ovs_cfg,
1389 const struct bridge *br,
1390 struct ovsrec_controller ***controllersp)
1392 struct ovsrec_controller **controllers;
1393 size_t n_controllers;
1395 if (br->cfg->n_controller) {
1396 controllers = br->cfg->controller;
1397 n_controllers = br->cfg->n_controller;
1399 controllers = ovs_cfg->controller;
1400 n_controllers = ovs_cfg->n_controller;
1403 if (n_controllers == 1 && !strcmp(controllers[0]->target, "none")) {
1409 *controllersp = controllers;
1411 return n_controllers;
1415 bridge_reconfigure_one(const struct ovsrec_open_vswitch *ovs_cfg,
1418 struct shash old_ports, new_ports;
1419 struct svec listeners, old_listeners;
1420 struct svec snoops, old_snoops;
1421 struct shash_node *node;
1424 /* Collect old ports. */
1425 shash_init(&old_ports);
1426 for (i = 0; i < br->n_ports; i++) {
1427 shash_add(&old_ports, br->ports[i]->name, br->ports[i]);
1430 /* Collect new ports. */
1431 shash_init(&new_ports);
1432 for (i = 0; i < br->cfg->n_ports; i++) {
1433 const char *name = br->cfg->ports[i]->name;
1434 if (!shash_add_once(&new_ports, name, br->cfg->ports[i])) {
1435 VLOG_WARN("bridge %s: %s specified twice as bridge port",
1440 /* If we have a controller, then we need a local port. Complain if the
1441 * user didn't specify one.
1443 * XXX perhaps we should synthesize a port ourselves in this case. */
1444 if (bridge_get_controllers(ovs_cfg, br, NULL)) {
1445 char local_name[IF_NAMESIZE];
1448 error = xfif_port_get_name(br->xfif, XFLOWP_LOCAL,
1449 local_name, sizeof local_name);
1450 if (!error && !shash_find(&new_ports, local_name)) {
1451 VLOG_WARN("bridge %s: controller specified but no local port "
1452 "(port named %s) defined",
1453 br->name, local_name);
1457 /* Get rid of deleted ports.
1458 * Get rid of deleted interfaces on ports that still exist. */
1459 SHASH_FOR_EACH (node, &old_ports) {
1460 struct port *port = node->data;
1461 const struct ovsrec_port *port_cfg;
1463 port_cfg = shash_find_data(&new_ports, node->name);
1467 port_del_ifaces(port, port_cfg);
1471 /* Create new ports.
1472 * Add new interfaces to existing ports.
1473 * Reconfigure existing ports. */
1474 SHASH_FOR_EACH (node, &new_ports) {
1475 struct port *port = shash_find_data(&old_ports, node->name);
1477 port = port_create(br, node->name);
1480 port_reconfigure(port, node->data);
1481 if (!port->n_ifaces) {
1482 VLOG_WARN("bridge %s: port %s has no interfaces, dropping",
1483 br->name, port->name);
1487 shash_destroy(&old_ports);
1488 shash_destroy(&new_ports);
1490 /* Delete all flows if we're switching from connected to standalone or vice
1491 * versa. (XXX Should we delete all flows if we are switching from one
1492 * controller to another?) */
1494 /* Configure OpenFlow management listener. */
1495 svec_init(&listeners);
1496 svec_add_nocopy(&listeners, xasprintf("punix:%s/%s.mgmt",
1497 ovs_rundir, br->name));
1498 svec_init(&old_listeners);
1499 ofproto_get_listeners(br->ofproto, &old_listeners);
1500 if (!svec_equal(&listeners, &old_listeners)) {
1501 ofproto_set_listeners(br->ofproto, &listeners);
1503 svec_destroy(&listeners);
1504 svec_destroy(&old_listeners);
1506 /* Configure OpenFlow controller connection snooping. */
1508 svec_add_nocopy(&snoops, xasprintf("punix:%s/%s.snoop",
1509 ovs_rundir, br->name));
1510 svec_init(&old_snoops);
1511 ofproto_get_snoops(br->ofproto, &old_snoops);
1512 if (!svec_equal(&snoops, &old_snoops)) {
1513 ofproto_set_snoops(br->ofproto, &snoops);
1515 svec_destroy(&snoops);
1516 svec_destroy(&old_snoops);
1518 mirror_reconfigure(br);
1522 bridge_reconfigure_remotes(const struct ovsrec_open_vswitch *ovs_cfg,
1524 const struct sockaddr_in *managers,
1527 struct ovsrec_controller **controllers;
1528 size_t n_controllers;
1530 ofproto_set_extra_in_band_remotes(br->ofproto, managers, n_managers);
1532 n_controllers = bridge_get_controllers(ovs_cfg, br, &controllers);
1533 if (ofproto_has_controller(br->ofproto) != (n_controllers != 0)) {
1534 ofproto_flush_flows(br->ofproto);
1537 if (!n_controllers) {
1538 union ofp_action action;
1541 /* Clear out controllers. */
1542 ofproto_set_controllers(br->ofproto, NULL, 0);
1544 /* Set up a flow that matches every packet and directs them to
1545 * OFPP_NORMAL (which goes to us). */
1546 memset(&action, 0, sizeof action);
1547 action.type = htons(OFPAT_OUTPUT);
1548 action.output.len = htons(sizeof action);
1549 action.output.port = htons(OFPP_NORMAL);
1550 memset(&flow, 0, sizeof flow);
1551 flow.wildcards = OVSFW_ALL;
1552 ofproto_add_flow(br->ofproto, &flow, &action, 1, 0);
1554 struct ofproto_controller *ocs;
1557 ocs = xmalloc(n_controllers * sizeof *ocs);
1558 for (i = 0; i < n_controllers; i++) {
1559 struct ovsrec_controller *c = controllers[i];
1560 struct ofproto_controller *oc = &ocs[i];
1562 if (strcmp(c->target, "discover")) {
1563 struct iface *local_iface;
1566 local_iface = bridge_get_local_iface(br);
1567 if (local_iface && c->local_ip
1568 && inet_aton(c->local_ip, &ip)) {
1569 struct netdev *netdev = local_iface->netdev;
1570 struct in_addr mask, gateway;
1572 if (!c->local_netmask
1573 || !inet_aton(c->local_netmask, &mask)) {
1576 if (!c->local_gateway
1577 || !inet_aton(c->local_gateway, &gateway)) {
1581 netdev_turn_flags_on(netdev, NETDEV_UP, true);
1583 mask.s_addr = guess_netmask(ip.s_addr);
1585 if (!netdev_set_in4(netdev, ip, mask)) {
1586 VLOG_INFO("bridge %s: configured IP address "IP_FMT", "
1588 br->name, IP_ARGS(&ip.s_addr),
1589 IP_ARGS(&mask.s_addr));
1592 if (gateway.s_addr) {
1593 if (!netdev_add_router(netdev, gateway)) {
1594 VLOG_INFO("bridge %s: configured gateway "IP_FMT,
1595 br->name, IP_ARGS(&gateway.s_addr));
1601 oc->target = c->target;
1602 oc->max_backoff = c->max_backoff ? *c->max_backoff / 1000 : 8;
1603 oc->probe_interval = (c->inactivity_probe
1604 ? *c->inactivity_probe / 1000 : 5);
1605 oc->fail = (!c->fail_mode
1606 || !strcmp(c->fail_mode, "standalone")
1607 || !strcmp(c->fail_mode, "open")
1608 ? OFPROTO_FAIL_STANDALONE
1609 : OFPROTO_FAIL_SECURE);
1610 oc->band = (!c->connection_mode
1611 || !strcmp(c->connection_mode, "in-band")
1613 : OFPROTO_OUT_OF_BAND);
1614 oc->accept_re = c->discover_accept_regex;
1615 oc->update_resolv_conf = c->discover_update_resolv_conf;
1616 oc->rate_limit = (c->controller_rate_limit
1617 ? *c->controller_rate_limit : 0);
1618 oc->burst_limit = (c->controller_burst_limit
1619 ? *c->controller_burst_limit : 0);
1621 ofproto_set_controllers(br->ofproto, ocs, n_controllers);
1627 bridge_get_all_ifaces(const struct bridge *br, struct shash *ifaces)
1632 for (i = 0; i < br->n_ports; i++) {
1633 struct port *port = br->ports[i];
1634 for (j = 0; j < port->n_ifaces; j++) {
1635 struct iface *iface = port->ifaces[j];
1636 shash_add_once(ifaces, iface->name, iface);
1638 if (port->n_ifaces > 1 && port->cfg->bond_fake_iface) {
1639 shash_add_once(ifaces, port->name, NULL);
1644 /* For robustness, in case the administrator moves around datapath ports behind
1645 * our back, we re-check all the datapath port numbers here.
1647 * This function will set the 'xf_ifidx' members of interfaces that have
1648 * disappeared to -1, so only call this function from a context where those
1649 * 'struct iface's will be removed from the bridge. Otherwise, the -1
1650 * 'xf_ifidx'es will cause trouble later when we try to send them to the
1651 * datapath, which doesn't support UINT16_MAX+1 ports. */
1653 bridge_fetch_dp_ifaces(struct bridge *br)
1655 struct xflow_port *xfif_ports;
1656 size_t n_xfif_ports;
1659 /* Reset all interface numbers. */
1660 for (i = 0; i < br->n_ports; i++) {
1661 struct port *port = br->ports[i];
1662 for (j = 0; j < port->n_ifaces; j++) {
1663 struct iface *iface = port->ifaces[j];
1664 iface->xf_ifidx = -1;
1667 port_array_clear(&br->ifaces);
1669 xfif_port_list(br->xfif, &xfif_ports, &n_xfif_ports);
1670 for (i = 0; i < n_xfif_ports; i++) {
1671 struct xflow_port *p = &xfif_ports[i];
1672 struct iface *iface = iface_lookup(br, p->devname);
1674 if (iface->xf_ifidx >= 0) {
1675 VLOG_WARN("%s reported interface %s twice",
1676 xfif_name(br->xfif), p->devname);
1677 } else if (iface_from_xf_ifidx(br, p->port)) {
1678 VLOG_WARN("%s reported interface %"PRIu16" twice",
1679 xfif_name(br->xfif), p->port);
1681 port_array_set(&br->ifaces, p->port, iface);
1682 iface->xf_ifidx = p->port;
1686 int64_t ofport = (iface->xf_ifidx >= 0
1687 ? xflow_port_to_ofp_port(iface->xf_ifidx)
1689 ovsrec_interface_set_ofport(iface->cfg, &ofport, 1);
1696 /* Bridge packet processing functions. */
1699 bond_hash(const uint8_t mac[ETH_ADDR_LEN])
1701 return hash_bytes(mac, ETH_ADDR_LEN, 0) & BOND_MASK;
1704 static struct bond_entry *
1705 lookup_bond_entry(const struct port *port, const uint8_t mac[ETH_ADDR_LEN])
1707 return &port->bond_hash[bond_hash(mac)];
1711 bond_choose_iface(const struct port *port)
1713 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
1714 size_t i, best_down_slave = -1;
1715 long long next_delay_expiration = LLONG_MAX;
1717 for (i = 0; i < port->n_ifaces; i++) {
1718 struct iface *iface = port->ifaces[i];
1720 if (iface->enabled) {
1722 } else if (iface->delay_expires < next_delay_expiration) {
1723 best_down_slave = i;
1724 next_delay_expiration = iface->delay_expires;
1728 if (best_down_slave != -1) {
1729 struct iface *iface = port->ifaces[best_down_slave];
1731 VLOG_INFO_RL(&rl, "interface %s: skipping remaining %lli ms updelay "
1732 "since no other interface is up", iface->name,
1733 iface->delay_expires - time_msec());
1734 bond_enable_slave(iface, true);
1737 return best_down_slave;
1741 choose_output_iface(const struct port *port, const uint8_t *dl_src,
1742 uint16_t *xf_ifidx, tag_type *tags)
1744 struct iface *iface;
1746 assert(port->n_ifaces);
1747 if (port->n_ifaces == 1) {
1748 iface = port->ifaces[0];
1750 struct bond_entry *e = lookup_bond_entry(port, dl_src);
1751 if (e->iface_idx < 0 || e->iface_idx >= port->n_ifaces
1752 || !port->ifaces[e->iface_idx]->enabled) {
1753 /* XXX select interface properly. The current interface selection
1754 * is only good for testing the rebalancing code. */
1755 e->iface_idx = bond_choose_iface(port);
1756 if (e->iface_idx < 0) {
1757 *tags |= port->no_ifaces_tag;
1760 e->iface_tag = tag_create_random();
1761 ((struct port *) port)->bond_compat_is_stale = true;
1763 *tags |= e->iface_tag;
1764 iface = port->ifaces[e->iface_idx];
1766 *xf_ifidx = iface->xf_ifidx;
1767 *tags |= iface->tag; /* Currently only used for bonding. */
1772 bond_link_status_update(struct iface *iface, bool carrier)
1774 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
1775 struct port *port = iface->port;
1777 if ((carrier == iface->enabled) == (iface->delay_expires == LLONG_MAX)) {
1778 /* Nothing to do. */
1781 VLOG_INFO_RL(&rl, "interface %s: carrier %s",
1782 iface->name, carrier ? "detected" : "dropped");
1783 if (carrier == iface->enabled) {
1784 iface->delay_expires = LLONG_MAX;
1785 VLOG_INFO_RL(&rl, "interface %s: will not be %s",
1786 iface->name, carrier ? "disabled" : "enabled");
1787 } else if (carrier && port->active_iface < 0) {
1788 bond_enable_slave(iface, true);
1789 if (port->updelay) {
1790 VLOG_INFO_RL(&rl, "interface %s: skipping %d ms updelay since no "
1791 "other interface is up", iface->name, port->updelay);
1794 int delay = carrier ? port->updelay : port->downdelay;
1795 iface->delay_expires = time_msec() + delay;
1798 "interface %s: will be %s if it stays %s for %d ms",
1800 carrier ? "enabled" : "disabled",
1801 carrier ? "up" : "down",
1808 bond_choose_active_iface(struct port *port)
1810 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
1812 port->active_iface = bond_choose_iface(port);
1813 port->active_iface_tag = tag_create_random();
1814 if (port->active_iface >= 0) {
1815 VLOG_INFO_RL(&rl, "port %s: active interface is now %s",
1816 port->name, port->ifaces[port->active_iface]->name);
1818 VLOG_WARN_RL(&rl, "port %s: all ports disabled, no active interface",
1824 bond_enable_slave(struct iface *iface, bool enable)
1826 struct port *port = iface->port;
1827 struct bridge *br = port->bridge;
1829 /* This acts as a recursion check. If the act of disabling a slave
1830 * causes a different slave to be enabled, the flag will allow us to
1831 * skip redundant work when we reenter this function. It must be
1832 * cleared on exit to keep things safe with multiple bonds. */
1833 static bool moving_active_iface = false;
1835 iface->delay_expires = LLONG_MAX;
1836 if (enable == iface->enabled) {
1840 iface->enabled = enable;
1841 if (!iface->enabled) {
1842 VLOG_WARN("interface %s: disabled", iface->name);
1843 ofproto_revalidate(br->ofproto, iface->tag);
1844 if (iface->port_ifidx == port->active_iface) {
1845 ofproto_revalidate(br->ofproto,
1846 port->active_iface_tag);
1848 /* Disabling a slave can lead to another slave being immediately
1849 * enabled if there will be no active slaves but one is waiting
1850 * on an updelay. In this case we do not need to run most of the
1851 * code for the newly enabled slave since there was no period
1852 * without an active slave and it is redundant with the disabling
1854 moving_active_iface = true;
1855 bond_choose_active_iface(port);
1857 bond_send_learning_packets(port);
1859 VLOG_WARN("interface %s: enabled", iface->name);
1860 if (port->active_iface < 0 && !moving_active_iface) {
1861 ofproto_revalidate(br->ofproto, port->no_ifaces_tag);
1862 bond_choose_active_iface(port);
1863 bond_send_learning_packets(port);
1865 iface->tag = tag_create_random();
1868 moving_active_iface = false;
1869 port->bond_compat_is_stale = true;
1872 /* Attempts to make the sum of the bond slaves' statistics appear on the fake
1873 * bond interface. */
1875 bond_update_fake_iface_stats(struct port *port)
1877 struct netdev_stats bond_stats;
1878 struct netdev *bond_dev;
1881 memset(&bond_stats, 0, sizeof bond_stats);
1883 for (i = 0; i < port->n_ifaces; i++) {
1884 struct netdev_stats slave_stats;
1886 if (!netdev_get_stats(port->ifaces[i]->netdev, &slave_stats)) {
1887 /* XXX: We swap the stats here because they are swapped back when
1888 * reported by the internal device. The reason for this is
1889 * internal devices normally represent packets going into the system
1890 * but when used as fake bond device they represent packets leaving
1891 * the system. We really should do this in the internal device
1892 * itself because changing it here reverses the counts from the
1893 * perspective of the switch. However, the internal device doesn't
1894 * know what type of device it represents so we have to do it here
1896 bond_stats.tx_packets += slave_stats.rx_packets;
1897 bond_stats.tx_bytes += slave_stats.rx_bytes;
1898 bond_stats.rx_packets += slave_stats.tx_packets;
1899 bond_stats.rx_bytes += slave_stats.tx_bytes;
1903 if (!netdev_open_default(port->name, &bond_dev)) {
1904 netdev_set_stats(bond_dev, &bond_stats);
1905 netdev_close(bond_dev);
1910 bond_run(struct bridge *br)
1914 for (i = 0; i < br->n_ports; i++) {
1915 struct port *port = br->ports[i];
1917 if (port->n_ifaces >= 2) {
1918 for (j = 0; j < port->n_ifaces; j++) {
1919 struct iface *iface = port->ifaces[j];
1920 if (time_msec() >= iface->delay_expires) {
1921 bond_enable_slave(iface, !iface->enabled);
1925 if (port->bond_fake_iface
1926 && time_msec() >= port->bond_next_fake_iface_update) {
1927 bond_update_fake_iface_stats(port);
1928 port->bond_next_fake_iface_update = time_msec() + 1000;
1932 if (port->bond_compat_is_stale) {
1933 port->bond_compat_is_stale = false;
1934 port_update_bond_compat(port);
1940 bond_wait(struct bridge *br)
1944 for (i = 0; i < br->n_ports; i++) {
1945 struct port *port = br->ports[i];
1946 if (port->n_ifaces < 2) {
1949 for (j = 0; j < port->n_ifaces; j++) {
1950 struct iface *iface = port->ifaces[j];
1951 if (iface->delay_expires != LLONG_MAX) {
1952 poll_timer_wait_until(iface->delay_expires);
1955 if (port->bond_fake_iface) {
1956 poll_timer_wait_until(port->bond_next_fake_iface_update);
1962 set_dst(struct dst *p, const flow_t *flow,
1963 const struct port *in_port, const struct port *out_port,
1966 p->vlan = (out_port->vlan >= 0 ? OFP_VLAN_NONE
1967 : in_port->vlan >= 0 ? in_port->vlan
1968 : ntohs(flow->dl_vlan));
1969 return choose_output_iface(out_port, flow->dl_src, &p->xf_ifidx, tags);
1973 swap_dst(struct dst *p, struct dst *q)
1975 struct dst tmp = *p;
1980 /* Moves all the dsts with vlan == 'vlan' to the front of the 'n_dsts' in
1981 * 'dsts'. (This may help performance by reducing the number of VLAN changes
1982 * that we push to the datapath. We could in fact fully sort the array by
1983 * vlan, but in most cases there are at most two different vlan tags so that's
1984 * possibly overkill.) */
1986 partition_dsts(struct dst *dsts, size_t n_dsts, int vlan)
1988 struct dst *first = dsts;
1989 struct dst *last = dsts + n_dsts;
1991 while (first != last) {
1993 * - All dsts < first have vlan == 'vlan'.
1994 * - All dsts >= last have vlan != 'vlan'.
1995 * - first < last. */
1996 while (first->vlan == vlan) {
1997 if (++first == last) {
2002 /* Same invariants, plus one additional:
2003 * - first->vlan != vlan.
2005 while (last[-1].vlan != vlan) {
2006 if (--last == first) {
2011 /* Same invariants, plus one additional:
2012 * - last[-1].vlan == vlan.*/
2013 swap_dst(first++, --last);
2018 mirror_mask_ffs(mirror_mask_t mask)
2020 BUILD_ASSERT_DECL(sizeof(unsigned int) >= sizeof(mask));
2025 dst_is_duplicate(const struct dst *dsts, size_t n_dsts,
2026 const struct dst *test)
2029 for (i = 0; i < n_dsts; i++) {
2030 if (dsts[i].vlan == test->vlan && dsts[i].xf_ifidx == test->xf_ifidx) {
2038 port_trunks_vlan(const struct port *port, uint16_t vlan)
2040 return (port->vlan < 0
2041 && (!port->trunks || bitmap_is_set(port->trunks, vlan)));
2045 port_includes_vlan(const struct port *port, uint16_t vlan)
2047 return vlan == port->vlan || port_trunks_vlan(port, vlan);
2051 compose_dsts(const struct bridge *br, const flow_t *flow, uint16_t vlan,
2052 const struct port *in_port, const struct port *out_port,
2053 struct dst dsts[], tag_type *tags, uint16_t *nf_output_iface)
2055 mirror_mask_t mirrors = in_port->src_mirrors;
2056 struct dst *dst = dsts;
2059 if (out_port == FLOOD_PORT) {
2060 /* XXX use XFLOW_FLOOD if no vlans or bonding. */
2061 /* XXX even better, define each VLAN as a datapath port group */
2062 for (i = 0; i < br->n_ports; i++) {
2063 struct port *port = br->ports[i];
2064 if (port != in_port && port_includes_vlan(port, vlan)
2065 && !port->is_mirror_output_port
2066 && set_dst(dst, flow, in_port, port, tags)) {
2067 mirrors |= port->dst_mirrors;
2071 *nf_output_iface = NF_OUT_FLOOD;
2072 } else if (out_port && set_dst(dst, flow, in_port, out_port, tags)) {
2073 *nf_output_iface = dst->xf_ifidx;
2074 mirrors |= out_port->dst_mirrors;
2079 struct mirror *m = br->mirrors[mirror_mask_ffs(mirrors) - 1];
2080 if (!m->n_vlans || vlan_is_mirrored(m, vlan)) {
2082 if (set_dst(dst, flow, in_port, m->out_port, tags)
2083 && !dst_is_duplicate(dsts, dst - dsts, dst)) {
2087 for (i = 0; i < br->n_ports; i++) {
2088 struct port *port = br->ports[i];
2089 if (port_includes_vlan(port, m->out_vlan)
2090 && set_dst(dst, flow, in_port, port, tags))
2094 if (port->vlan < 0) {
2095 dst->vlan = m->out_vlan;
2097 if (dst_is_duplicate(dsts, dst - dsts, dst)) {
2101 /* Use the vlan tag on the original flow instead of
2102 * the one passed in the vlan parameter. This ensures
2103 * that we compare the vlan from before any implicit
2104 * tagging tags place. This is necessary because
2105 * dst->vlan is the final vlan, after removing implicit
2107 flow_vlan = ntohs(flow->dl_vlan);
2108 if (flow_vlan == 0) {
2109 flow_vlan = OFP_VLAN_NONE;
2111 if (port == in_port && dst->vlan == flow_vlan) {
2112 /* Don't send out input port on same VLAN. */
2120 mirrors &= mirrors - 1;
2123 partition_dsts(dsts, dst - dsts, ntohs(flow->dl_vlan));
2127 static void OVS_UNUSED
2128 print_dsts(const struct dst *dsts, size_t n)
2130 for (; n--; dsts++) {
2131 printf(">p%"PRIu16, dsts->xf_ifidx);
2132 if (dsts->vlan != OFP_VLAN_NONE) {
2133 printf("v%"PRIu16, dsts->vlan);
2139 compose_actions(struct bridge *br, const flow_t *flow, uint16_t vlan,
2140 const struct port *in_port, const struct port *out_port,
2141 tag_type *tags, struct xflow_actions *actions,
2142 uint16_t *nf_output_iface)
2144 struct dst dsts[DP_MAX_PORTS * (MAX_MIRRORS + 1)];
2146 const struct dst *p;
2149 n_dsts = compose_dsts(br, flow, vlan, in_port, out_port, dsts, tags,
2152 cur_vlan = ntohs(flow->dl_vlan);
2153 for (p = dsts; p < &dsts[n_dsts]; p++) {
2154 union xflow_action *a;
2155 if (p->vlan != cur_vlan) {
2156 if (p->vlan == OFP_VLAN_NONE) {
2157 xflow_actions_add(actions, XFLOWAT_STRIP_VLAN);
2159 a = xflow_actions_add(actions, XFLOWAT_SET_DL_TCI);
2160 a->dl_tci.tci = htons(p->vlan & VLAN_VID_MASK);
2161 a->dl_tci.mask = htons(VLAN_VID_MASK);
2165 a = xflow_actions_add(actions, XFLOWAT_OUTPUT);
2166 a->output.port = p->xf_ifidx;
2170 /* Returns the effective vlan of a packet, taking into account both the
2171 * 802.1Q header and implicitly tagged ports. A value of 0 indicates that
2172 * the packet is untagged and -1 indicates it has an invalid header and
2173 * should be dropped. */
2174 static int flow_get_vlan(struct bridge *br, const flow_t *flow,
2175 struct port *in_port, bool have_packet)
2177 /* Note that dl_vlan of 0 and of OFP_VLAN_NONE both mean that the packet
2178 * belongs to VLAN 0, so we should treat both cases identically. (In the
2179 * former case, the packet has an 802.1Q header that specifies VLAN 0,
2180 * presumably to allow a priority to be specified. In the latter case, the
2181 * packet does not have any 802.1Q header.) */
2182 int vlan = ntohs(flow->dl_vlan);
2183 if (vlan == OFP_VLAN_NONE) {
2186 if (in_port->vlan >= 0) {
2188 /* XXX support double tagging? */
2190 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2191 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %"PRIu16" tagged "
2192 "packet received on port %s configured with "
2193 "implicit VLAN %"PRIu16,
2194 br->name, ntohs(flow->dl_vlan),
2195 in_port->name, in_port->vlan);
2199 vlan = in_port->vlan;
2201 if (!port_includes_vlan(in_port, vlan)) {
2203 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2204 VLOG_WARN_RL(&rl, "bridge %s: dropping VLAN %d tagged "
2205 "packet received on port %s not configured for "
2207 br->name, vlan, in_port->name, vlan);
2216 /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after
2217 * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to
2218 * indicate this; newer upstream kernels use gratuitous ARP requests. */
2220 is_gratuitous_arp(const flow_t *flow)
2222 return (flow->dl_type == htons(ETH_TYPE_ARP)
2223 && eth_addr_is_broadcast(flow->dl_dst)
2224 && (flow->nw_proto == ARP_OP_REPLY
2225 || (flow->nw_proto == ARP_OP_REQUEST
2226 && flow->nw_src == flow->nw_dst)));
2230 update_learning_table(struct bridge *br, const flow_t *flow, int vlan,
2231 struct port *in_port)
2233 enum grat_arp_lock_type lock_type;
2236 /* We don't want to learn from gratuitous ARP packets that are reflected
2237 * back over bond slaves so we lock the learning table. */
2238 lock_type = !is_gratuitous_arp(flow) ? GRAT_ARP_LOCK_NONE :
2239 (in_port->n_ifaces == 1) ? GRAT_ARP_LOCK_SET :
2240 GRAT_ARP_LOCK_CHECK;
2242 rev_tag = mac_learning_learn(br->ml, flow->dl_src, vlan, in_port->port_idx,
2245 /* The log messages here could actually be useful in debugging,
2246 * so keep the rate limit relatively high. */
2247 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30,
2249 VLOG_DBG_RL(&rl, "bridge %s: learned that "ETH_ADDR_FMT" is "
2250 "on port %s in VLAN %d",
2251 br->name, ETH_ADDR_ARGS(flow->dl_src),
2252 in_port->name, vlan);
2253 ofproto_revalidate(br->ofproto, rev_tag);
2257 /* Determines whether packets in 'flow' within 'br' should be forwarded or
2258 * dropped. Returns true if they may be forwarded, false if they should be
2261 * If 'have_packet' is true, it indicates that the caller is processing a
2262 * received packet. If 'have_packet' is false, then the caller is just
2263 * revalidating an existing flow because configuration has changed. Either
2264 * way, 'have_packet' only affects logging (there is no point in logging errors
2265 * during revalidation).
2267 * Sets '*in_portp' to the input port. This will be a null pointer if
2268 * flow->in_port does not designate a known input port (in which case
2269 * is_admissible() returns false).
2271 * When returning true, sets '*vlanp' to the effective VLAN of the input
2272 * packet, as returned by flow_get_vlan().
2274 * May also add tags to '*tags', although the current implementation only does
2275 * so in one special case.
2278 is_admissible(struct bridge *br, const flow_t *flow, bool have_packet,
2279 tag_type *tags, int *vlanp, struct port **in_portp)
2281 struct iface *in_iface;
2282 struct port *in_port;
2285 /* Find the interface and port structure for the received packet. */
2286 in_iface = iface_from_xf_ifidx(br, ofp_port_to_xflow_port(flow->in_port));
2288 /* No interface? Something fishy... */
2290 /* Odd. A few possible reasons here:
2292 * - We deleted an interface but there are still a few packets
2293 * queued up from it.
2295 * - Someone externally added an interface (e.g. with "ovs-dpctl
2296 * add-if") that we don't know about.
2298 * - Packet arrived on the local port but the local port is not
2299 * one of our bridge ports.
2301 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2303 VLOG_WARN_RL(&rl, "bridge %s: received packet on unknown "
2304 "interface %"PRIu16, br->name, flow->in_port);
2310 *in_portp = in_port = in_iface->port;
2311 *vlanp = vlan = flow_get_vlan(br, flow, in_port, have_packet);
2316 /* Drop frames for reserved multicast addresses. */
2317 if (eth_addr_is_reserved(flow->dl_dst)) {
2321 /* Drop frames on ports reserved for mirroring. */
2322 if (in_port->is_mirror_output_port) {
2324 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2325 VLOG_WARN_RL(&rl, "bridge %s: dropping packet received on port "
2326 "%s, which is reserved exclusively for mirroring",
2327 br->name, in_port->name);
2332 /* Packets received on bonds need special attention to avoid duplicates. */
2333 if (in_port->n_ifaces > 1) {
2335 bool is_grat_arp_locked;
2337 if (eth_addr_is_multicast(flow->dl_dst)) {
2338 *tags |= in_port->active_iface_tag;
2339 if (in_port->active_iface != in_iface->port_ifidx) {
2340 /* Drop all multicast packets on inactive slaves. */
2345 /* Drop all packets for which we have learned a different input
2346 * port, because we probably sent the packet on one slave and got
2347 * it back on the other. Gratuitous ARP packets are an exception
2348 * to this rule: the host has moved to another switch. The exception
2349 * to the exception is if we locked the learning table to avoid
2350 * reflections on bond slaves. If this is the case, just drop the
2352 src_idx = mac_learning_lookup(br->ml, flow->dl_src, vlan,
2353 &is_grat_arp_locked);
2354 if (src_idx != -1 && src_idx != in_port->port_idx &&
2355 (!is_gratuitous_arp(flow) || is_grat_arp_locked)) {
2363 /* If the composed actions may be applied to any packet in the given 'flow',
2364 * returns true. Otherwise, the actions should only be applied to 'packet', or
2365 * not at all, if 'packet' was NULL. */
2367 process_flow(struct bridge *br, const flow_t *flow,
2368 const struct ofpbuf *packet, struct xflow_actions *actions,
2369 tag_type *tags, uint16_t *nf_output_iface)
2371 struct port *in_port;
2372 struct port *out_port;
2376 /* Check whether we should drop packets in this flow. */
2377 if (!is_admissible(br, flow, packet != NULL, tags, &vlan, &in_port)) {
2382 /* Learn source MAC (but don't try to learn from revalidation). */
2384 update_learning_table(br, flow, vlan, in_port);
2387 /* Determine output port. */
2388 out_port_idx = mac_learning_lookup_tag(br->ml, flow->dl_dst, vlan, tags,
2390 if (out_port_idx >= 0 && out_port_idx < br->n_ports) {
2391 out_port = br->ports[out_port_idx];
2392 } else if (!packet && !eth_addr_is_multicast(flow->dl_dst)) {
2393 /* If we are revalidating but don't have a learning entry then
2394 * eject the flow. Installing a flow that floods packets opens
2395 * up a window of time where we could learn from a packet reflected
2396 * on a bond and blackhole packets before the learning table is
2397 * updated to reflect the correct port. */
2400 out_port = FLOOD_PORT;
2403 /* Don't send packets out their input ports. */
2404 if (in_port == out_port) {
2410 compose_actions(br, flow, vlan, in_port, out_port, tags, actions,
2417 /* Careful: 'opp' is in host byte order and opp->port_no is an OFP port
2420 bridge_port_changed_ofhook_cb(enum ofp_port_reason reason,
2421 const struct ofp_phy_port *opp,
2424 struct bridge *br = br_;
2425 struct iface *iface;
2428 iface = iface_from_xf_ifidx(br, ofp_port_to_xflow_port(opp->port_no));
2434 if (reason == OFPPR_DELETE) {
2435 VLOG_WARN("bridge %s: interface %s deleted unexpectedly",
2436 br->name, iface->name);
2437 iface_destroy(iface);
2438 if (!port->n_ifaces) {
2439 VLOG_WARN("bridge %s: port %s has no interfaces, dropping",
2440 br->name, port->name);
2446 if (port->n_ifaces > 1) {
2447 bool up = !(opp->state & OFPPS_LINK_DOWN);
2448 bond_link_status_update(iface, up);
2449 port_update_bond_compat(port);
2455 bridge_normal_ofhook_cb(const flow_t *flow, const struct ofpbuf *packet,
2456 struct xflow_actions *actions, tag_type *tags,
2457 uint16_t *nf_output_iface, void *br_)
2459 struct bridge *br = br_;
2461 COVERAGE_INC(bridge_process_flow);
2462 return process_flow(br, flow, packet, actions, tags, nf_output_iface);
2466 bridge_account_flow_ofhook_cb(const flow_t *flow,
2467 const union xflow_action *actions,
2468 size_t n_actions, unsigned long long int n_bytes,
2471 struct bridge *br = br_;
2472 const union xflow_action *a;
2473 struct port *in_port;
2477 /* Feed information from the active flows back into the learning table
2478 * to ensure that table is always in sync with what is actually flowing
2479 * through the datapath. */
2480 if (is_admissible(br, flow, false, &tags, &vlan, &in_port)) {
2481 update_learning_table(br, flow, vlan, in_port);
2484 if (!br->has_bonded_ports) {
2488 for (a = actions; a < &actions[n_actions]; a++) {
2489 if (a->type == XFLOWAT_OUTPUT) {
2490 struct port *out_port = port_from_xf_ifidx(br, a->output.port);
2491 if (out_port && out_port->n_ifaces >= 2) {
2492 struct bond_entry *e = lookup_bond_entry(out_port,
2494 e->tx_bytes += n_bytes;
2501 bridge_account_checkpoint_ofhook_cb(void *br_)
2503 struct bridge *br = br_;
2507 if (!br->has_bonded_ports) {
2512 for (i = 0; i < br->n_ports; i++) {
2513 struct port *port = br->ports[i];
2514 if (port->n_ifaces > 1 && now >= port->bond_next_rebalance) {
2515 port->bond_next_rebalance = now + port->bond_rebalance_interval;
2516 bond_rebalance_port(port);
2521 static struct ofhooks bridge_ofhooks = {
2522 bridge_port_changed_ofhook_cb,
2523 bridge_normal_ofhook_cb,
2524 bridge_account_flow_ofhook_cb,
2525 bridge_account_checkpoint_ofhook_cb,
2528 /* Bonding functions. */
2530 /* Statistics for a single interface on a bonded port, used for load-based
2531 * bond rebalancing. */
2532 struct slave_balance {
2533 struct iface *iface; /* The interface. */
2534 uint64_t tx_bytes; /* Sum of hashes[*]->tx_bytes. */
2536 /* All the "bond_entry"s that are assigned to this interface, in order of
2537 * increasing tx_bytes. */
2538 struct bond_entry **hashes;
2542 /* Sorts pointers to pointers to bond_entries in ascending order by the
2543 * interface to which they are assigned, and within a single interface in
2544 * ascending order of bytes transmitted. */
2546 compare_bond_entries(const void *a_, const void *b_)
2548 const struct bond_entry *const *ap = a_;
2549 const struct bond_entry *const *bp = b_;
2550 const struct bond_entry *a = *ap;
2551 const struct bond_entry *b = *bp;
2552 if (a->iface_idx != b->iface_idx) {
2553 return a->iface_idx > b->iface_idx ? 1 : -1;
2554 } else if (a->tx_bytes != b->tx_bytes) {
2555 return a->tx_bytes > b->tx_bytes ? 1 : -1;
2561 /* Sorts slave_balances so that enabled ports come first, and otherwise in
2562 * *descending* order by number of bytes transmitted. */
2564 compare_slave_balance(const void *a_, const void *b_)
2566 const struct slave_balance *a = a_;
2567 const struct slave_balance *b = b_;
2568 if (a->iface->enabled != b->iface->enabled) {
2569 return a->iface->enabled ? -1 : 1;
2570 } else if (a->tx_bytes != b->tx_bytes) {
2571 return a->tx_bytes > b->tx_bytes ? -1 : 1;
2578 swap_bals(struct slave_balance *a, struct slave_balance *b)
2580 struct slave_balance tmp = *a;
2585 /* Restores the 'n_bals' slave_balance structures in 'bals' to sorted order
2586 * given that 'p' (and only 'p') might be in the wrong location.
2588 * This function invalidates 'p', since it might now be in a different memory
2591 resort_bals(struct slave_balance *p,
2592 struct slave_balance bals[], size_t n_bals)
2595 for (; p > bals && p->tx_bytes > p[-1].tx_bytes; p--) {
2596 swap_bals(p, p - 1);
2598 for (; p < &bals[n_bals - 1] && p->tx_bytes < p[1].tx_bytes; p++) {
2599 swap_bals(p, p + 1);
2605 log_bals(const struct slave_balance *bals, size_t n_bals, struct port *port)
2607 if (VLOG_IS_DBG_ENABLED()) {
2608 struct ds ds = DS_EMPTY_INITIALIZER;
2609 const struct slave_balance *b;
2611 for (b = bals; b < bals + n_bals; b++) {
2615 ds_put_char(&ds, ',');
2617 ds_put_format(&ds, " %s %"PRIu64"kB",
2618 b->iface->name, b->tx_bytes / 1024);
2620 if (!b->iface->enabled) {
2621 ds_put_cstr(&ds, " (disabled)");
2623 if (b->n_hashes > 0) {
2624 ds_put_cstr(&ds, " (");
2625 for (i = 0; i < b->n_hashes; i++) {
2626 const struct bond_entry *e = b->hashes[i];
2628 ds_put_cstr(&ds, " + ");
2630 ds_put_format(&ds, "h%td: %"PRIu64"kB",
2631 e - port->bond_hash, e->tx_bytes / 1024);
2633 ds_put_cstr(&ds, ")");
2636 VLOG_DBG("bond %s:%s", port->name, ds_cstr(&ds));
2641 /* Shifts 'hash' from 'from' to 'to' within 'port'. */
2643 bond_shift_load(struct slave_balance *from, struct slave_balance *to,
2646 struct bond_entry *hash = from->hashes[hash_idx];
2647 struct port *port = from->iface->port;
2648 uint64_t delta = hash->tx_bytes;
2650 VLOG_INFO("bond %s: shift %"PRIu64"kB of load (with hash %td) "
2651 "from %s to %s (now carrying %"PRIu64"kB and "
2652 "%"PRIu64"kB load, respectively)",
2653 port->name, delta / 1024, hash - port->bond_hash,
2654 from->iface->name, to->iface->name,
2655 (from->tx_bytes - delta) / 1024,
2656 (to->tx_bytes + delta) / 1024);
2658 /* Delete element from from->hashes.
2660 * We don't bother to add the element to to->hashes because not only would
2661 * it require more work, the only purpose it would be to allow that hash to
2662 * be migrated to another slave in this rebalancing run, and there is no
2663 * point in doing that. */
2664 if (hash_idx == 0) {
2667 memmove(from->hashes + hash_idx, from->hashes + hash_idx + 1,
2668 (from->n_hashes - (hash_idx + 1)) * sizeof *from->hashes);
2672 /* Shift load away from 'from' to 'to'. */
2673 from->tx_bytes -= delta;
2674 to->tx_bytes += delta;
2676 /* Arrange for flows to be revalidated. */
2677 ofproto_revalidate(port->bridge->ofproto, hash->iface_tag);
2678 hash->iface_idx = to->iface->port_ifidx;
2679 hash->iface_tag = tag_create_random();
2683 bond_rebalance_port(struct port *port)
2685 struct slave_balance bals[DP_MAX_PORTS];
2687 struct bond_entry *hashes[BOND_MASK + 1];
2688 struct slave_balance *b, *from, *to;
2689 struct bond_entry *e;
2692 /* Sets up 'bals' to describe each of the port's interfaces, sorted in
2693 * descending order of tx_bytes, so that bals[0] represents the most
2694 * heavily loaded slave and bals[n_bals - 1] represents the least heavily
2697 * The code is a bit tricky: to avoid dynamically allocating a 'hashes'
2698 * array for each slave_balance structure, we sort our local array of
2699 * hashes in order by slave, so that all of the hashes for a given slave
2700 * become contiguous in memory, and then we point each 'hashes' members of
2701 * a slave_balance structure to the start of a contiguous group. */
2702 n_bals = port->n_ifaces;
2703 for (b = bals; b < &bals[n_bals]; b++) {
2704 b->iface = port->ifaces[b - bals];
2709 for (i = 0; i <= BOND_MASK; i++) {
2710 hashes[i] = &port->bond_hash[i];
2712 qsort(hashes, BOND_MASK + 1, sizeof *hashes, compare_bond_entries);
2713 for (i = 0; i <= BOND_MASK; i++) {
2715 if (e->iface_idx >= 0 && e->iface_idx < port->n_ifaces) {
2716 b = &bals[e->iface_idx];
2717 b->tx_bytes += e->tx_bytes;
2719 b->hashes = &hashes[i];
2724 qsort(bals, n_bals, sizeof *bals, compare_slave_balance);
2725 log_bals(bals, n_bals, port);
2727 /* Discard slaves that aren't enabled (which were sorted to the back of the
2728 * array earlier). */
2729 while (!bals[n_bals - 1].iface->enabled) {
2736 /* Shift load from the most-loaded slaves to the least-loaded slaves. */
2737 to = &bals[n_bals - 1];
2738 for (from = bals; from < to; ) {
2739 uint64_t overload = from->tx_bytes - to->tx_bytes;
2740 if (overload < to->tx_bytes >> 5 || overload < 100000) {
2741 /* The extra load on 'from' (and all less-loaded slaves), compared
2742 * to that of 'to' (the least-loaded slave), is less than ~3%, or
2743 * it is less than ~1Mbps. No point in rebalancing. */
2745 } else if (from->n_hashes == 1) {
2746 /* 'from' only carries a single MAC hash, so we can't shift any
2747 * load away from it, even though we want to. */
2750 /* 'from' is carrying significantly more load than 'to', and that
2751 * load is split across at least two different hashes. Pick a hash
2752 * to migrate to 'to' (the least-loaded slave), given that doing so
2753 * must decrease the ratio of the load on the two slaves by at
2756 * The sort order we use means that we prefer to shift away the
2757 * smallest hashes instead of the biggest ones. There is little
2758 * reason behind this decision; we could use the opposite sort
2759 * order to shift away big hashes ahead of small ones. */
2763 for (i = 0; i < from->n_hashes; i++) {
2764 double old_ratio, new_ratio;
2765 uint64_t delta = from->hashes[i]->tx_bytes;
2767 if (delta == 0 || from->tx_bytes - delta == 0) {
2768 /* Pointless move. */
2772 order_swapped = from->tx_bytes - delta < to->tx_bytes + delta;
2774 if (to->tx_bytes == 0) {
2775 /* Nothing on the new slave, move it. */
2779 old_ratio = (double)from->tx_bytes / to->tx_bytes;
2780 new_ratio = (double)(from->tx_bytes - delta) /
2781 (to->tx_bytes + delta);
2783 if (new_ratio == 0) {
2784 /* Should already be covered but check to prevent division
2789 if (new_ratio < 1) {
2790 new_ratio = 1 / new_ratio;
2793 if (old_ratio - new_ratio > 0.1) {
2794 /* Would decrease the ratio, move it. */
2798 if (i < from->n_hashes) {
2799 bond_shift_load(from, to, i);
2800 port->bond_compat_is_stale = true;
2802 /* If the result of the migration changed the relative order of
2803 * 'from' and 'to' swap them back to maintain invariants. */
2804 if (order_swapped) {
2805 swap_bals(from, to);
2808 /* Re-sort 'bals'. Note that this may make 'from' and 'to'
2809 * point to different slave_balance structures. It is only
2810 * valid to do these two operations in a row at all because we
2811 * know that 'from' will not move past 'to' and vice versa. */
2812 resort_bals(from, bals, n_bals);
2813 resort_bals(to, bals, n_bals);
2820 /* Implement exponentially weighted moving average. A weight of 1/2 causes
2821 * historical data to decay to <1% in 7 rebalancing runs. */
2822 for (e = &port->bond_hash[0]; e <= &port->bond_hash[BOND_MASK]; e++) {
2828 bond_send_learning_packets(struct port *port)
2830 struct bridge *br = port->bridge;
2831 struct mac_entry *e;
2832 struct ofpbuf packet;
2833 int error, n_packets, n_errors;
2835 if (!port->n_ifaces || port->active_iface < 0) {
2839 ofpbuf_init(&packet, 128);
2840 error = n_packets = n_errors = 0;
2841 LIST_FOR_EACH (e, struct mac_entry, lru_node, &br->ml->lrus) {
2842 union ofp_action actions[2], *a;
2848 if (e->port == port->port_idx
2849 || !choose_output_iface(port, e->mac, &xf_ifidx, &tags)) {
2853 /* Compose actions. */
2854 memset(actions, 0, sizeof actions);
2857 a->vlan_vid.type = htons(OFPAT_SET_VLAN_VID);
2858 a->vlan_vid.len = htons(sizeof *a);
2859 a->vlan_vid.vlan_vid = htons(e->vlan);
2862 a->output.type = htons(OFPAT_OUTPUT);
2863 a->output.len = htons(sizeof *a);
2864 a->output.port = htons(xflow_port_to_ofp_port(xf_ifidx));
2869 compose_benign_packet(&packet, "Open vSwitch Bond Failover", 0xf177,
2871 flow_extract(&packet, 0, OFPP_NONE, &flow);
2872 retval = ofproto_send_packet(br->ofproto, &flow, actions, a - actions,
2879 ofpbuf_uninit(&packet);
2882 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
2883 VLOG_WARN_RL(&rl, "bond %s: %d errors sending %d gratuitous learning "
2884 "packets, last error was: %s",
2885 port->name, n_errors, n_packets, strerror(error));
2887 VLOG_DBG("bond %s: sent %d gratuitous learning packets",
2888 port->name, n_packets);
2892 /* Bonding unixctl user interface functions. */
2895 bond_unixctl_list(struct unixctl_conn *conn,
2896 const char *args OVS_UNUSED, void *aux OVS_UNUSED)
2898 struct ds ds = DS_EMPTY_INITIALIZER;
2899 const struct bridge *br;
2901 ds_put_cstr(&ds, "bridge\tbond\tslaves\n");
2903 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
2906 for (i = 0; i < br->n_ports; i++) {
2907 const struct port *port = br->ports[i];
2908 if (port->n_ifaces > 1) {
2911 ds_put_format(&ds, "%s\t%s\t", br->name, port->name);
2912 for (j = 0; j < port->n_ifaces; j++) {
2913 const struct iface *iface = port->ifaces[j];
2915 ds_put_cstr(&ds, ", ");
2917 ds_put_cstr(&ds, iface->name);
2919 ds_put_char(&ds, '\n');
2923 unixctl_command_reply(conn, 200, ds_cstr(&ds));
2927 static struct port *
2928 bond_find(const char *name)
2930 const struct bridge *br;
2932 LIST_FOR_EACH (br, struct bridge, node, &all_bridges) {
2935 for (i = 0; i < br->n_ports; i++) {
2936 struct port *port = br->ports[i];
2937 if (!strcmp(port->name, name) && port->n_ifaces > 1) {
2946 bond_unixctl_show(struct unixctl_conn *conn,
2947 const char *args, void *aux OVS_UNUSED)
2949 struct ds ds = DS_EMPTY_INITIALIZER;
2950 const struct port *port;
2953 port = bond_find(args);
2955 unixctl_command_reply(conn, 501, "no such bond");
2959 ds_put_format(&ds, "updelay: %d ms\n", port->updelay);
2960 ds_put_format(&ds, "downdelay: %d ms\n", port->downdelay);
2961 ds_put_format(&ds, "next rebalance: %lld ms\n",
2962 port->bond_next_rebalance - time_msec());
2963 for (j = 0; j < port->n_ifaces; j++) {
2964 const struct iface *iface = port->ifaces[j];
2965 struct bond_entry *be;
2968 ds_put_format(&ds, "slave %s: %s\n",
2969 iface->name, iface->enabled ? "enabled" : "disabled");
2970 if (j == port->active_iface) {
2971 ds_put_cstr(&ds, "\tactive slave\n");
2973 if (iface->delay_expires != LLONG_MAX) {
2974 ds_put_format(&ds, "\t%s expires in %lld ms\n",
2975 iface->enabled ? "downdelay" : "updelay",
2976 iface->delay_expires - time_msec());
2980 for (be = port->bond_hash; be <= &port->bond_hash[BOND_MASK]; be++) {
2981 int hash = be - port->bond_hash;
2982 struct mac_entry *me;
2984 if (be->iface_idx != j) {
2988 ds_put_format(&ds, "\thash %d: %"PRIu64" kB load\n",
2989 hash, be->tx_bytes / 1024);
2992 LIST_FOR_EACH (me, struct mac_entry, lru_node,
2993 &port->bridge->ml->lrus) {
2996 if (bond_hash(me->mac) == hash
2997 && me->port != port->port_idx
2998 && choose_output_iface(port, me->mac, &xf_ifidx, &tags)
2999 && xf_ifidx == iface->xf_ifidx)
3001 ds_put_format(&ds, "\t\t"ETH_ADDR_FMT"\n",
3002 ETH_ADDR_ARGS(me->mac));
3007 unixctl_command_reply(conn, 200, ds_cstr(&ds));
3012 bond_unixctl_migrate(struct unixctl_conn *conn, const char *args_,
3013 void *aux OVS_UNUSED)
3015 char *args = (char *) args_;
3016 char *save_ptr = NULL;
3017 char *bond_s, *hash_s, *slave_s;
3018 uint8_t mac[ETH_ADDR_LEN];
3020 struct iface *iface;
3021 struct bond_entry *entry;
3024 bond_s = strtok_r(args, " ", &save_ptr);
3025 hash_s = strtok_r(NULL, " ", &save_ptr);
3026 slave_s = strtok_r(NULL, " ", &save_ptr);
3028 unixctl_command_reply(conn, 501,
3029 "usage: bond/migrate BOND HASH SLAVE");
3033 port = bond_find(bond_s);
3035 unixctl_command_reply(conn, 501, "no such bond");
3039 if (sscanf(hash_s, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac))
3040 == ETH_ADDR_SCAN_COUNT) {
3041 hash = bond_hash(mac);
3042 } else if (strspn(hash_s, "0123456789") == strlen(hash_s)) {
3043 hash = atoi(hash_s) & BOND_MASK;
3045 unixctl_command_reply(conn, 501, "bad hash");
3049 iface = port_lookup_iface(port, slave_s);
3051 unixctl_command_reply(conn, 501, "no such slave");
3055 if (!iface->enabled) {
3056 unixctl_command_reply(conn, 501, "cannot migrate to disabled slave");
3060 entry = &port->bond_hash[hash];
3061 ofproto_revalidate(port->bridge->ofproto, entry->iface_tag);
3062 entry->iface_idx = iface->port_ifidx;
3063 entry->iface_tag = tag_create_random();
3064 port->bond_compat_is_stale = true;
3065 unixctl_command_reply(conn, 200, "migrated");
3069 bond_unixctl_set_active_slave(struct unixctl_conn *conn, const char *args_,
3070 void *aux OVS_UNUSED)
3072 char *args = (char *) args_;
3073 char *save_ptr = NULL;
3074 char *bond_s, *slave_s;
3076 struct iface *iface;
3078 bond_s = strtok_r(args, " ", &save_ptr);
3079 slave_s = strtok_r(NULL, " ", &save_ptr);
3081 unixctl_command_reply(conn, 501,
3082 "usage: bond/set-active-slave BOND SLAVE");
3086 port = bond_find(bond_s);
3088 unixctl_command_reply(conn, 501, "no such bond");
3092 iface = port_lookup_iface(port, slave_s);
3094 unixctl_command_reply(conn, 501, "no such slave");
3098 if (!iface->enabled) {
3099 unixctl_command_reply(conn, 501, "cannot make disabled slave active");
3103 if (port->active_iface != iface->port_ifidx) {
3104 ofproto_revalidate(port->bridge->ofproto, port->active_iface_tag);
3105 port->active_iface = iface->port_ifidx;
3106 port->active_iface_tag = tag_create_random();
3107 VLOG_INFO("port %s: active interface is now %s",
3108 port->name, iface->name);
3109 bond_send_learning_packets(port);
3110 unixctl_command_reply(conn, 200, "done");
3112 unixctl_command_reply(conn, 200, "no change");
3117 enable_slave(struct unixctl_conn *conn, const char *args_, bool enable)
3119 char *args = (char *) args_;
3120 char *save_ptr = NULL;
3121 char *bond_s, *slave_s;
3123 struct iface *iface;
3125 bond_s = strtok_r(args, " ", &save_ptr);
3126 slave_s = strtok_r(NULL, " ", &save_ptr);
3128 unixctl_command_reply(conn, 501,
3129 "usage: bond/enable/disable-slave BOND SLAVE");
3133 port = bond_find(bond_s);
3135 unixctl_command_reply(conn, 501, "no such bond");
3139 iface = port_lookup_iface(port, slave_s);
3141 unixctl_command_reply(conn, 501, "no such slave");
3145 bond_enable_slave(iface, enable);
3146 unixctl_command_reply(conn, 501, enable ? "enabled" : "disabled");
3150 bond_unixctl_enable_slave(struct unixctl_conn *conn, const char *args,
3151 void *aux OVS_UNUSED)
3153 enable_slave(conn, args, true);
3157 bond_unixctl_disable_slave(struct unixctl_conn *conn, const char *args,
3158 void *aux OVS_UNUSED)
3160 enable_slave(conn, args, false);
3164 bond_unixctl_hash(struct unixctl_conn *conn, const char *args,
3165 void *aux OVS_UNUSED)
3167 uint8_t mac[ETH_ADDR_LEN];
3171 if (sscanf(args, ETH_ADDR_SCAN_FMT, ETH_ADDR_SCAN_ARGS(mac))
3172 == ETH_ADDR_SCAN_COUNT) {
3173 hash = bond_hash(mac);
3175 hash_cstr = xasprintf("%u", hash);
3176 unixctl_command_reply(conn, 200, hash_cstr);
3179 unixctl_command_reply(conn, 501, "invalid mac");
3186 unixctl_command_register("bond/list", bond_unixctl_list, NULL);
3187 unixctl_command_register("bond/show", bond_unixctl_show, NULL);
3188 unixctl_command_register("bond/migrate", bond_unixctl_migrate, NULL);
3189 unixctl_command_register("bond/set-active-slave",
3190 bond_unixctl_set_active_slave, NULL);
3191 unixctl_command_register("bond/enable-slave", bond_unixctl_enable_slave,
3193 unixctl_command_register("bond/disable-slave", bond_unixctl_disable_slave,
3195 unixctl_command_register("bond/hash", bond_unixctl_hash, NULL);
3198 /* Port functions. */
3200 static struct port *
3201 port_create(struct bridge *br, const char *name)
3205 port = xzalloc(sizeof *port);
3207 port->port_idx = br->n_ports;
3209 port->trunks = NULL;
3210 port->name = xstrdup(name);
3211 port->active_iface = -1;
3213 if (br->n_ports >= br->allocated_ports) {
3214 br->ports = x2nrealloc(br->ports, &br->allocated_ports,
3217 br->ports[br->n_ports++] = port;
3218 shash_add_assert(&br->port_by_name, port->name, port);
3220 VLOG_INFO("created port %s on bridge %s", port->name, br->name);
3227 get_port_other_config(const struct ovsrec_port *port, const char *key,
3228 const char *default_value)
3232 value = get_ovsrec_key_value(&port->header_, &ovsrec_port_col_other_config,
3234 return value ? value : default_value;
3238 port_del_ifaces(struct port *port, const struct ovsrec_port *cfg)
3240 struct shash new_ifaces;
3243 /* Collect list of new interfaces. */
3244 shash_init(&new_ifaces);
3245 for (i = 0; i < cfg->n_interfaces; i++) {
3246 const char *name = cfg->interfaces[i]->name;
3247 shash_add_once(&new_ifaces, name, NULL);
3250 /* Get rid of deleted interfaces. */
3251 for (i = 0; i < port->n_ifaces; ) {
3252 if (!shash_find(&new_ifaces, cfg->interfaces[i]->name)) {
3253 iface_destroy(port->ifaces[i]);
3259 shash_destroy(&new_ifaces);
3263 port_reconfigure(struct port *port, const struct ovsrec_port *cfg)
3265 struct shash new_ifaces;
3266 long long int next_rebalance;
3267 unsigned long *trunks;
3273 /* Update settings. */
3274 port->updelay = cfg->bond_updelay;
3275 if (port->updelay < 0) {
3278 port->updelay = cfg->bond_downdelay;
3279 if (port->downdelay < 0) {
3280 port->downdelay = 0;
3282 port->bond_rebalance_interval = atoi(
3283 get_port_other_config(cfg, "bond-rebalance-interval", "10000"));
3284 if (port->bond_rebalance_interval < 1000) {
3285 port->bond_rebalance_interval = 1000;
3287 next_rebalance = time_msec() + port->bond_rebalance_interval;
3288 if (port->bond_next_rebalance > next_rebalance) {
3289 port->bond_next_rebalance = next_rebalance;
3292 /* Add new interfaces and update 'cfg' member of existing ones. */
3293 shash_init(&new_ifaces);
3294 for (i = 0; i < cfg->n_interfaces; i++) {
3295 const struct ovsrec_interface *if_cfg = cfg->interfaces[i];
3296 struct iface *iface;
3298 if (!shash_add_once(&new_ifaces, if_cfg->name, NULL)) {
3299 VLOG_WARN("port %s: %s specified twice as port interface",
3300 port->name, if_cfg->name);
3304 iface = iface_lookup(port->bridge, if_cfg->name);
3306 if (iface->port != port) {
3307 VLOG_ERR("bridge %s: %s interface is on multiple ports, "
3309 port->bridge->name, if_cfg->name, iface->port->name);
3312 iface->cfg = if_cfg;
3314 iface_create(port, if_cfg);
3317 shash_destroy(&new_ifaces);
3322 if (port->n_ifaces < 2) {
3324 if (vlan >= 0 && vlan <= 4095) {
3325 VLOG_DBG("port %s: assigning VLAN tag %d", port->name, vlan);
3330 /* It's possible that bonded, VLAN-tagged ports make sense. Maybe
3331 * they even work as-is. But they have not been tested. */
3332 VLOG_WARN("port %s: VLAN tags not supported on bonded ports",
3336 if (port->vlan != vlan) {
3338 bridge_flush(port->bridge);
3341 /* Get trunked VLANs. */
3343 if (vlan < 0 && cfg->n_trunks) {
3347 trunks = bitmap_allocate(4096);
3349 for (i = 0; i < cfg->n_trunks; i++) {
3350 int trunk = cfg->trunks[i];
3352 bitmap_set1(trunks, trunk);
3358 VLOG_ERR("port %s: invalid values for %zu trunk VLANs",
3359 port->name, cfg->n_trunks);
3361 if (n_errors == cfg->n_trunks) {
3362 VLOG_ERR("port %s: no valid trunks, trunking all VLANs",
3364 bitmap_free(trunks);
3367 } else if (vlan >= 0 && cfg->n_trunks) {
3368 VLOG_ERR("port %s: ignoring trunks in favor of implicit vlan",
3372 ? port->trunks != NULL
3373 : port->trunks == NULL || !bitmap_equal(trunks, port->trunks, 4096)) {
3374 bridge_flush(port->bridge);
3376 bitmap_free(port->trunks);
3377 port->trunks = trunks;
3381 port_destroy(struct port *port)
3384 struct bridge *br = port->bridge;
3388 proc_net_compat_update_vlan(port->name, NULL, 0);
3389 proc_net_compat_update_bond(port->name, NULL);
3391 for (i = 0; i < MAX_MIRRORS; i++) {
3392 struct mirror *m = br->mirrors[i];
3393 if (m && m->out_port == port) {
3398 while (port->n_ifaces > 0) {
3399 iface_destroy(port->ifaces[port->n_ifaces - 1]);
3402 shash_find_and_delete_assert(&br->port_by_name, port->name);
3404 del = br->ports[port->port_idx] = br->ports[--br->n_ports];
3405 del->port_idx = port->port_idx;
3408 bitmap_free(port->trunks);
3415 static struct port *
3416 port_from_xf_ifidx(const struct bridge *br, uint16_t xf_ifidx)
3418 struct iface *iface = iface_from_xf_ifidx(br, xf_ifidx);
3419 return iface ? iface->port : NULL;
3422 static struct port *
3423 port_lookup(const struct bridge *br, const char *name)
3425 return shash_find_data(&br->port_by_name, name);
3428 static struct iface *
3429 port_lookup_iface(const struct port *port, const char *name)
3431 struct iface *iface = iface_lookup(port->bridge, name);
3432 return iface && iface->port == port ? iface : NULL;
3436 port_update_bonding(struct port *port)
3438 if (port->n_ifaces < 2) {
3439 /* Not a bonded port. */
3440 if (port->bond_hash) {
3441 free(port->bond_hash);
3442 port->bond_hash = NULL;
3443 port->bond_compat_is_stale = true;
3444 port->bond_fake_iface = false;
3447 if (!port->bond_hash) {
3450 port->bond_hash = xcalloc(BOND_MASK + 1, sizeof *port->bond_hash);
3451 for (i = 0; i <= BOND_MASK; i++) {
3452 struct bond_entry *e = &port->bond_hash[i];
3456 port->no_ifaces_tag = tag_create_random();
3457 bond_choose_active_iface(port);
3458 port->bond_next_rebalance
3459 = time_msec() + port->bond_rebalance_interval;
3461 if (port->cfg->bond_fake_iface) {
3462 port->bond_next_fake_iface_update = time_msec();
3465 port->bond_compat_is_stale = true;
3466 port->bond_fake_iface = port->cfg->bond_fake_iface;
3471 port_update_bond_compat(struct port *port)
3473 struct compat_bond_hash compat_hashes[BOND_MASK + 1];
3474 struct compat_bond bond;
3477 if (port->n_ifaces < 2) {
3478 proc_net_compat_update_bond(port->name, NULL);
3483 bond.updelay = port->updelay;
3484 bond.downdelay = port->downdelay;
3487 bond.hashes = compat_hashes;
3488 if (port->bond_hash) {
3489 const struct bond_entry *e;
3490 for (e = port->bond_hash; e <= &port->bond_hash[BOND_MASK]; e++) {
3491 if (e->iface_idx >= 0 && e->iface_idx < port->n_ifaces) {
3492 struct compat_bond_hash *cbh = &bond.hashes[bond.n_hashes++];
3493 cbh->hash = e - port->bond_hash;
3494 cbh->netdev_name = port->ifaces[e->iface_idx]->name;
3499 bond.n_slaves = port->n_ifaces;
3500 bond.slaves = xmalloc(port->n_ifaces * sizeof *bond.slaves);
3501 for (i = 0; i < port->n_ifaces; i++) {
3502 struct iface *iface = port->ifaces[i];
3503 struct compat_bond_slave *slave = &bond.slaves[i];
3504 slave->name = iface->name;
3506 /* We need to make the same determination as the Linux bonding
3507 * code to determine whether a slave should be consider "up".
3508 * The Linux function bond_miimon_inspect() supports four
3509 * BOND_LINK_* states:
3511 * - BOND_LINK_UP: carrier detected, updelay has passed.
3512 * - BOND_LINK_FAIL: carrier lost, downdelay in progress.
3513 * - BOND_LINK_DOWN: carrier lost, downdelay has passed.
3514 * - BOND_LINK_BACK: carrier detected, updelay in progress.
3516 * The function bond_info_show_slave() only considers BOND_LINK_UP
3517 * to be "up" and anything else to be "down".
3519 slave->up = iface->enabled && iface->delay_expires == LLONG_MAX;
3523 netdev_get_etheraddr(iface->netdev, slave->mac);
3526 if (port->bond_fake_iface) {
3527 struct netdev *bond_netdev;
3529 if (!netdev_open_default(port->name, &bond_netdev)) {
3531 netdev_turn_flags_on(bond_netdev, NETDEV_UP, true);
3533 netdev_turn_flags_off(bond_netdev, NETDEV_UP, true);
3535 netdev_close(bond_netdev);
3539 proc_net_compat_update_bond(port->name, &bond);
3544 port_update_vlan_compat(struct port *port)
3546 struct bridge *br = port->bridge;
3547 char *vlandev_name = NULL;
3549 if (port->vlan > 0) {
3550 /* Figure out the name that the VLAN device should actually have, if it
3551 * existed. This takes some work because the VLAN device would not
3552 * have port->name in its name; rather, it would have the trunk port's
3553 * name, and 'port' would be attached to a bridge that also had the
3554 * VLAN device one of its ports. So we need to find a trunk port that
3555 * includes port->vlan.
3557 * There might be more than one candidate. This doesn't happen on
3558 * XenServer, so if it happens we just pick the first choice in
3559 * alphabetical order instead of creating multiple VLAN devices. */
3561 for (i = 0; i < br->n_ports; i++) {
3562 struct port *p = br->ports[i];
3563 if (port_trunks_vlan(p, port->vlan)
3565 && (!vlandev_name || strcmp(p->name, vlandev_name) <= 0))
3567 uint8_t ea[ETH_ADDR_LEN];
3568 netdev_get_etheraddr(p->ifaces[0]->netdev, ea);
3569 if (!eth_addr_is_multicast(ea) &&
3570 !eth_addr_is_reserved(ea) &&
3571 !eth_addr_is_zero(ea)) {
3572 vlandev_name = p->name;
3577 proc_net_compat_update_vlan(port->name, vlandev_name, port->vlan);
3580 /* Interface functions. */
3582 static struct iface *
3583 iface_create(struct port *port, const struct ovsrec_interface *if_cfg)
3585 struct bridge *br = port->bridge;
3586 struct iface *iface;
3587 char *name = if_cfg->name;
3590 iface = xzalloc(sizeof *iface);
3592 iface->port_ifidx = port->n_ifaces;
3593 iface->name = xstrdup(name);
3594 iface->xf_ifidx = -1;
3595 iface->tag = tag_create_random();
3596 iface->delay_expires = LLONG_MAX;
3597 iface->netdev = NULL;
3598 iface->cfg = if_cfg;
3600 shash_add_assert(&br->iface_by_name, iface->name, iface);
3602 /* Attempt to create the network interface in case it doesn't exist yet. */
3603 if (!iface_is_internal(br, iface->name)) {
3604 error = set_up_iface(if_cfg, iface, true);
3606 VLOG_WARN("could not create iface %s: %s", iface->name,
3609 shash_find_and_delete_assert(&br->iface_by_name, iface->name);
3616 if (port->n_ifaces >= port->allocated_ifaces) {
3617 port->ifaces = x2nrealloc(port->ifaces, &port->allocated_ifaces,
3618 sizeof *port->ifaces);
3620 port->ifaces[port->n_ifaces++] = iface;
3621 if (port->n_ifaces > 1) {
3622 br->has_bonded_ports = true;
3625 VLOG_DBG("attached network device %s to port %s", iface->name, port->name);
3633 iface_destroy(struct iface *iface)
3636 struct port *port = iface->port;
3637 struct bridge *br = port->bridge;
3638 bool del_active = port->active_iface == iface->port_ifidx;
3641 shash_find_and_delete_assert(&br->iface_by_name, iface->name);
3643 if (iface->xf_ifidx >= 0) {
3644 port_array_set(&br->ifaces, iface->xf_ifidx, NULL);
3647 del = port->ifaces[iface->port_ifidx] = port->ifaces[--port->n_ifaces];
3648 del->port_ifidx = iface->port_ifidx;
3650 netdev_close(iface->netdev);
3653 ofproto_revalidate(port->bridge->ofproto, port->active_iface_tag);
3654 bond_choose_active_iface(port);
3655 bond_send_learning_packets(port);
3661 bridge_flush(port->bridge);
3665 static struct iface *
3666 iface_lookup(const struct bridge *br, const char *name)
3668 return shash_find_data(&br->iface_by_name, name);
3671 static struct iface *
3672 iface_from_xf_ifidx(const struct bridge *br, uint16_t xf_ifidx)
3674 return port_array_get(&br->ifaces, xf_ifidx);
3677 /* Returns true if 'iface' is the name of an "internal" interface on bridge
3678 * 'br', that is, an interface that is entirely simulated within the datapath.
3679 * The local port (XFLOWP_LOCAL) is always an internal interface. Other local
3680 * interfaces are created by setting "iface.<iface>.internal = true".
3682 * In addition, we have a kluge-y feature that creates an internal port with
3683 * the name of a bonded port if "bonding.<bondname>.fake-iface = true" is set.
3684 * This feature needs to go away in the long term. Until then, this is one
3685 * reason why this function takes a name instead of a struct iface: the fake
3686 * interfaces created this way do not have a struct iface. */
3688 iface_is_internal(const struct bridge *br, const char *if_name)
3690 struct iface *iface;
3693 if (!strcmp(if_name, br->name)) {
3697 iface = iface_lookup(br, if_name);
3698 if (iface && !strcmp(iface->cfg->type, "internal")) {
3702 port = port_lookup(br, if_name);
3703 if (port && port->n_ifaces > 1 && port->cfg->bond_fake_iface) {
3709 /* Set Ethernet address of 'iface', if one is specified in the configuration
3712 iface_set_mac(struct iface *iface)
3714 uint8_t ea[ETH_ADDR_LEN];
3716 if (iface->cfg->mac && eth_addr_from_string(iface->cfg->mac, ea)) {
3717 if (eth_addr_is_multicast(ea)) {
3718 VLOG_ERR("interface %s: cannot set MAC to multicast address",
3720 } else if (iface->xf_ifidx == XFLOWP_LOCAL) {
3721 VLOG_ERR("ignoring iface.%s.mac; use bridge.%s.mac instead",
3722 iface->name, iface->name);
3724 int error = netdev_set_etheraddr(iface->netdev, ea);
3726 VLOG_ERR("interface %s: setting MAC failed (%s)",
3727 iface->name, strerror(error));
3734 shash_from_ovs_idl_map(char **keys, char **values, size_t n,
3735 struct shash *shash)
3740 for (i = 0; i < n; i++) {
3741 shash_add(shash, keys[i], values[i]);
3745 struct iface_delete_queues_cbdata {
3746 struct netdev *netdev;
3747 const struct ovsdb_datum *queues;
3751 queue_ids_include(const struct ovsdb_datum *queues, int64_t target)
3753 union ovsdb_atom atom;
3755 atom.integer = target;
3756 return ovsdb_datum_find_key(queues, &atom, OVSDB_TYPE_INTEGER) != UINT_MAX;
3760 iface_delete_queues(unsigned int queue_id,
3761 const struct shash *details OVS_UNUSED, void *cbdata_)
3763 struct iface_delete_queues_cbdata *cbdata = cbdata_;
3765 if (!queue_ids_include(cbdata->queues, queue_id)) {
3766 netdev_delete_queue(cbdata->netdev, queue_id);
3771 iface_update_qos(struct iface *iface, const struct ovsrec_qos *qos)
3773 if (!qos || qos->type[0] == '\0') {
3774 netdev_set_qos(iface->netdev, NULL, NULL);
3776 struct iface_delete_queues_cbdata cbdata;
3777 struct shash details;
3780 /* Configure top-level Qos for 'iface'. */
3781 shash_from_ovs_idl_map(qos->key_other_config, qos->value_other_config,
3782 qos->n_other_config, &details);
3783 netdev_set_qos(iface->netdev, qos->type, &details);
3784 shash_destroy(&details);
3786 /* Deconfigure queues that were deleted. */
3787 cbdata.netdev = iface->netdev;
3788 cbdata.queues = ovsrec_qos_get_queues(qos, OVSDB_TYPE_INTEGER,
3790 netdev_dump_queues(iface->netdev, iface_delete_queues, &cbdata);
3792 /* Configure queues for 'iface'. */
3793 for (i = 0; i < qos->n_queues; i++) {
3794 const struct ovsrec_queue *queue = qos->value_queues[i];
3795 unsigned int queue_id = qos->key_queues[i];
3797 shash_from_ovs_idl_map(queue->key_other_config,
3798 queue->value_other_config,
3799 queue->n_other_config, &details);
3800 netdev_set_queue(iface->netdev, queue_id, &details);
3801 shash_destroy(&details);
3806 /* Port mirroring. */
3808 static struct mirror *
3809 mirror_find_by_uuid(struct bridge *br, const struct uuid *uuid)
3813 for (i = 0; i < MAX_MIRRORS; i++) {
3814 struct mirror *m = br->mirrors[i];
3815 if (m && uuid_equals(uuid, &m->uuid)) {
3823 mirror_reconfigure(struct bridge *br)
3825 unsigned long *rspan_vlans;
3828 /* Get rid of deleted mirrors. */
3829 for (i = 0; i < MAX_MIRRORS; i++) {
3830 struct mirror *m = br->mirrors[i];
3832 const struct ovsdb_datum *mc;
3833 union ovsdb_atom atom;
3835 mc = ovsrec_bridge_get_mirrors(br->cfg, OVSDB_TYPE_UUID);
3836 atom.uuid = br->mirrors[i]->uuid;
3837 if (ovsdb_datum_find_key(mc, &atom, OVSDB_TYPE_UUID) == UINT_MAX) {
3843 /* Add new mirrors and reconfigure existing ones. */
3844 for (i = 0; i < br->cfg->n_mirrors; i++) {
3845 struct ovsrec_mirror *cfg = br->cfg->mirrors[i];
3846 struct mirror *m = mirror_find_by_uuid(br, &cfg->header_.uuid);
3848 mirror_reconfigure_one(m, cfg);
3850 mirror_create(br, cfg);
3854 /* Update port reserved status. */
3855 for (i = 0; i < br->n_ports; i++) {
3856 br->ports[i]->is_mirror_output_port = false;
3858 for (i = 0; i < MAX_MIRRORS; i++) {
3859 struct mirror *m = br->mirrors[i];
3860 if (m && m->out_port) {
3861 m->out_port->is_mirror_output_port = true;
3865 /* Update flooded vlans (for RSPAN). */
3867 if (br->cfg->n_flood_vlans) {
3868 rspan_vlans = bitmap_allocate(4096);
3870 for (i = 0; i < br->cfg->n_flood_vlans; i++) {
3871 int64_t vlan = br->cfg->flood_vlans[i];
3872 if (vlan >= 0 && vlan < 4096) {
3873 bitmap_set1(rspan_vlans, vlan);
3874 VLOG_INFO("bridge %s: disabling learning on vlan %"PRId64,
3877 VLOG_ERR("bridge %s: invalid value %"PRId64 "for flood VLAN",
3882 if (mac_learning_set_flood_vlans(br->ml, rspan_vlans)) {
3888 mirror_create(struct bridge *br, struct ovsrec_mirror *cfg)
3893 for (i = 0; ; i++) {
3894 if (i >= MAX_MIRRORS) {
3895 VLOG_WARN("bridge %s: maximum of %d port mirrors reached, "
3896 "cannot create %s", br->name, MAX_MIRRORS, cfg->name);
3899 if (!br->mirrors[i]) {
3904 VLOG_INFO("created port mirror %s on bridge %s", cfg->name, br->name);
3907 br->mirrors[i] = m = xzalloc(sizeof *m);
3910 m->name = xstrdup(cfg->name);
3911 shash_init(&m->src_ports);
3912 shash_init(&m->dst_ports);
3918 mirror_reconfigure_one(m, cfg);
3922 mirror_destroy(struct mirror *m)
3925 struct bridge *br = m->bridge;
3928 for (i = 0; i < br->n_ports; i++) {
3929 br->ports[i]->src_mirrors &= ~(MIRROR_MASK_C(1) << m->idx);
3930 br->ports[i]->dst_mirrors &= ~(MIRROR_MASK_C(1) << m->idx);
3933 shash_destroy(&m->src_ports);
3934 shash_destroy(&m->dst_ports);
3937 m->bridge->mirrors[m->idx] = NULL;
3946 mirror_collect_ports(struct mirror *m, struct ovsrec_port **ports, int n_ports,
3947 struct shash *names)
3951 for (i = 0; i < n_ports; i++) {
3952 const char *name = ports[i]->name;
3953 if (port_lookup(m->bridge, name)) {
3954 shash_add_once(names, name, NULL);
3956 VLOG_WARN("bridge %s: mirror %s cannot match on nonexistent "
3957 "port %s", m->bridge->name, m->name, name);
3963 mirror_collect_vlans(struct mirror *m, const struct ovsrec_mirror *cfg,
3969 *vlans = xmalloc(sizeof **vlans * cfg->n_select_vlan);
3971 for (i = 0; i < cfg->n_select_vlan; i++) {
3972 int64_t vlan = cfg->select_vlan[i];
3973 if (vlan < 0 || vlan > 4095) {
3974 VLOG_WARN("bridge %s: mirror %s selects invalid VLAN %"PRId64,
3975 m->bridge->name, m->name, vlan);
3977 (*vlans)[n_vlans++] = vlan;
3984 vlan_is_mirrored(const struct mirror *m, int vlan)
3988 for (i = 0; i < m->n_vlans; i++) {
3989 if (m->vlans[i] == vlan) {
3997 port_trunks_any_mirrored_vlan(const struct mirror *m, const struct port *p)
4001 for (i = 0; i < m->n_vlans; i++) {
4002 if (port_trunks_vlan(p, m->vlans[i])) {
4010 mirror_reconfigure_one(struct mirror *m, struct ovsrec_mirror *cfg)
4012 struct shash src_ports, dst_ports;
4013 mirror_mask_t mirror_bit;
4014 struct port *out_port;
4021 if (strcmp(cfg->name, m->name)) {
4023 m->name = xstrdup(cfg->name);
4026 /* Get output port. */
4027 if (cfg->output_port) {
4028 out_port = port_lookup(m->bridge, cfg->output_port->name);
4030 VLOG_ERR("bridge %s: mirror %s outputs to port not on bridge",
4031 m->bridge->name, m->name);
4037 if (cfg->output_vlan) {
4038 VLOG_ERR("bridge %s: mirror %s specifies both output port and "
4039 "output vlan; ignoring output vlan",
4040 m->bridge->name, m->name);
4042 } else if (cfg->output_vlan) {
4044 out_vlan = *cfg->output_vlan;
4046 VLOG_ERR("bridge %s: mirror %s does not specify output; ignoring",
4047 m->bridge->name, m->name);
4052 shash_init(&src_ports);
4053 shash_init(&dst_ports);
4054 if (cfg->select_all) {
4055 for (i = 0; i < m->bridge->n_ports; i++) {
4056 const char *name = m->bridge->ports[i]->name;
4057 shash_add_once(&src_ports, name, NULL);
4058 shash_add_once(&dst_ports, name, NULL);
4063 /* Get ports, and drop duplicates and ports that don't exist. */
4064 mirror_collect_ports(m, cfg->select_src_port, cfg->n_select_src_port,
4066 mirror_collect_ports(m, cfg->select_dst_port, cfg->n_select_dst_port,
4069 /* Get all the vlans, and drop duplicate and invalid vlans. */
4070 n_vlans = mirror_collect_vlans(m, cfg, &vlans);
4073 /* Update mirror data. */
4074 if (!shash_equal_keys(&m->src_ports, &src_ports)
4075 || !shash_equal_keys(&m->dst_ports, &dst_ports)
4076 || m->n_vlans != n_vlans
4077 || memcmp(m->vlans, vlans, sizeof *vlans * n_vlans)
4078 || m->out_port != out_port
4079 || m->out_vlan != out_vlan) {
4080 bridge_flush(m->bridge);
4082 shash_swap(&m->src_ports, &src_ports);
4083 shash_swap(&m->dst_ports, &dst_ports);
4086 m->n_vlans = n_vlans;
4087 m->out_port = out_port;
4088 m->out_vlan = out_vlan;
4091 mirror_bit = MIRROR_MASK_C(1) << m->idx;
4092 for (i = 0; i < m->bridge->n_ports; i++) {
4093 struct port *port = m->bridge->ports[i];
4095 if (shash_find(&m->src_ports, port->name)
4098 ? port_trunks_any_mirrored_vlan(m, port)
4099 : vlan_is_mirrored(m, port->vlan)))) {
4100 port->src_mirrors |= mirror_bit;
4102 port->src_mirrors &= ~mirror_bit;
4105 if (shash_find(&m->dst_ports, port->name)) {
4106 port->dst_mirrors |= mirror_bit;
4108 port->dst_mirrors &= ~mirror_bit;
4113 shash_destroy(&src_ports);
4114 shash_destroy(&dst_ports);