ofproto/ofproto.h

   1 /*
   2  * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef OFPROTO_H
  18 #define OFPROTO_H 1
  19
  20 #include <sys/types.h>
  21 #include <netinet/in.h>
  22 #include <stdbool.h>
  23 #include <stddef.h>
  24 #include <stdint.h>
  25 #include "cfm.h"
  26 #include "classifier.h"
  27 #include "flow.h"
  28 #include "openvswitch/meta-flow.h"
  29 #include "netflow.h"
  30 #include "rstp.h"
  31 #include "smap.h"
  32 #include "sset.h"
  33 #include "stp.h"
  34 #include "lacp.h"
  35
  36 #ifdef  __cplusplus
  37 extern "C" {
  38 #endif
  39
  40 struct bfd_cfg;
  41 struct cfm_settings;
  42 struct cls_rule;
  43 struct netdev;
  44 struct netdev_stats;
  45 struct ofport;
  46 struct ofproto;
  47 struct shash;
  48 struct simap;
  49 struct smap;
  50 struct netdev_stats;
  51 struct ovs_list;
  52 struct lldp_status;
  53 struct aa_settings;
  54 struct aa_mapping_settings;
  55
  56 /* Needed for the lock annotations. */
  57 extern struct ovs_mutex ofproto_mutex;
  58
  59 struct ofproto_controller_info {
  60     bool is_connected;
  61     enum ofp12_controller_role role;
  62     struct smap pairs;
  63 };
  64
  65 struct ofproto_sflow_options {
  66     struct sset targets;
  67     uint32_t sampling_rate;
  68     uint32_t polling_interval;
  69     uint32_t header_len;
  70     uint32_t sub_id;
  71     char *agent_device;
  72     char *control_ip;
  73 };
  74
  75 struct ofproto_ipfix_bridge_exporter_options {
  76     struct sset targets;
  77     uint32_t sampling_rate;
  78     uint32_t obs_domain_id;  /* Bridge-wide Observation Domain ID. */
  79     uint32_t obs_point_id;  /* Bridge-wide Observation Point ID. */
  80     uint32_t cache_active_timeout;
  81     uint32_t cache_max_flows;
  82     bool enable_tunnel_sampling;
  83     bool enable_input_sampling;
  84     bool enable_output_sampling;
  85     char *virtual_obs_id;
  86 };
  87
  88 struct ofproto_ipfix_flow_exporter_options {
  89     uint32_t collector_set_id;
  90     struct sset targets;
  91     uint32_t cache_active_timeout;
  92     uint32_t cache_max_flows;
  93     bool enable_tunnel_sampling;
  94     char *virtual_obs_id;
  95 };
  96
  97 struct ofproto_rstp_status {
  98     bool enabled;               /* If false, ignore other members. */
  99     rstp_identifier root_id;
 100     rstp_identifier bridge_id;
 101     rstp_identifier designated_id;
 102     uint32_t root_path_cost;
 103     uint16_t designated_port_id;
 104     uint16_t bridge_port_id;
 105 };
 106
 107 struct ofproto_rstp_settings {
 108     rstp_identifier address;
 109     uint16_t priority;
 110     uint32_t ageing_time;
 111     enum rstp_force_protocol_version force_protocol_version;
 112     uint16_t bridge_forward_delay;
 113     uint16_t bridge_max_age;
 114     uint16_t transmit_hold_count;
 115 };
 116
 117 struct ofproto_port_rstp_status {
 118     bool enabled;               /* If false, ignore other members. */
 119     uint16_t port_id;
 120     enum rstp_port_role role;
 121     enum rstp_state state;
 122     rstp_identifier designated_bridge_id;
 123     uint16_t designated_port_id;
 124     uint32_t designated_path_cost;
 125     int tx_count;               /* Number of BPDUs transmitted. */
 126     int rx_count;               /* Number of valid BPDUs received. */
 127     int error_count;            /* Number of bad BPDUs received. */
 128     int uptime;
 129 };
 130
 131 struct ofproto_port_rstp_settings {
 132     bool enable;
 133     uint16_t port_num;           /* In the range 1-4095, inclusive. */
 134     uint8_t priority;
 135     uint32_t path_cost;
 136     bool admin_edge_port;
 137     bool auto_edge;
 138     bool mcheck;
 139     uint8_t admin_p2p_mac_state;
 140     bool admin_port_state;
 141 };
 142
 143 struct ofproto_stp_settings {
 144     stp_identifier system_id;
 145     uint16_t priority;
 146     uint16_t hello_time;
 147     uint16_t max_age;
 148     uint16_t fwd_delay;
 149 };
 150
 151 struct ofproto_stp_status {
 152     bool enabled;               /* If false, ignore other members. */
 153     stp_identifier bridge_id;
 154     stp_identifier designated_root;
 155     int root_path_cost;
 156 };
 157
 158 struct ofproto_port_stp_settings {
 159     bool enable;
 160     uint8_t port_num;           /* In the range 1-255, inclusive. */
 161     uint8_t priority;
 162     uint16_t path_cost;
 163 };
 164
 165 struct ofproto_port_stp_status {
 166     bool enabled;               /* If false, ignore other members. */
 167     int port_id;
 168     enum stp_state state;
 169     unsigned int sec_in_state;
 170     enum stp_role role;
 171 };
 172
 173 struct ofproto_port_stp_stats {
 174     bool enabled;               /* If false, ignore other members. */
 175     int tx_count;               /* Number of BPDUs transmitted. */
 176     int rx_count;               /* Number of valid BPDUs received. */
 177     int error_count;            /* Number of bad BPDUs received. */
 178 };
 179
 180 struct ofproto_port_queue {
 181     uint32_t queue;             /* Queue ID. */
 182     uint8_t dscp;               /* DSCP bits (e.g. [0, 63]). */
 183 };
 184
 185 struct ofproto_mcast_snooping_settings {
 186     bool flood_unreg;           /* If true, flood unregistered packets to all
 187                                    all ports. If false, send only to ports
 188                                    connected to multicast routers. */
 189     unsigned int idle_time;     /* Entry is removed after the idle time
 190                                  * in seconds. */
 191     unsigned int max_entries;   /* Size of the multicast snooping table. */
 192 };
 193
 194 struct ofproto_mcast_snooping_port_settings {
 195     bool flood;                 /* If true, flood multicast traffic */
 196     bool flood_reports;         /* If true, flood Reports traffic */
 197 };
 198
 199 /* How the switch should act if the controller cannot be contacted. */
 200 enum ofproto_fail_mode {
 201     OFPROTO_FAIL_SECURE,        /* Preserve flow table. */
 202     OFPROTO_FAIL_STANDALONE     /* Act as a standalone switch. */
 203 };
 204
 205 enum ofproto_band {
 206     OFPROTO_IN_BAND,            /* In-band connection to controller. */
 207     OFPROTO_OUT_OF_BAND         /* Out-of-band connection to controller. */
 208 };
 209
 210 struct ofproto_controller {
 211     char *target;               /* e.g. "tcp:127.0.0.1" */
 212     int max_backoff;            /* Maximum reconnection backoff, in seconds. */
 213     int probe_interval;         /* Max idle time before probing, in seconds. */
 214     enum ofproto_band band;     /* In-band or out-of-band? */
 215     bool enable_async_msgs;     /* Initially enable asynchronous messages? */
 216
 217     /* OpenFlow packet-in rate-limiting. */
 218     int rate_limit;             /* Max packet-in rate in packets per second. */
 219     int burst_limit;            /* Limit on accumulating packet credits. */
 220
 221     uint8_t dscp;               /* DSCP value for controller connection. */
 222 };
 223
 224 void ofproto_enumerate_types(struct sset *types);
 225 const char *ofproto_normalize_type(const char *);
 226
 227 int ofproto_enumerate_names(const char *type, struct sset *names);
 228 void ofproto_parse_name(const char *name, char **dp_name, char **dp_type);
 229
 230 /* An interface hint element, which is used by ofproto_init() to
 231  * describe the caller's understanding of the startup state. */
 232 struct iface_hint {
 233     char *br_name;              /* Name of owning bridge. */
 234     char *br_type;              /* Type of owning bridge. */
 235     ofp_port_t ofp_port;        /* OpenFlow port number. */
 236 };
 237
 238 void ofproto_init(const struct shash *iface_hints);
 239
 240 int ofproto_type_run(const char *datapath_type);
 241 void ofproto_type_wait(const char *datapath_type);
 242
 243 int ofproto_create(const char *datapath, const char *datapath_type,
 244                    struct ofproto **ofprotop)
 245     OVS_EXCLUDED(ofproto_mutex);
 246 void ofproto_destroy(struct ofproto *, bool del);
 247 int ofproto_delete(const char *name, const char *type);
 248
 249 int ofproto_run(struct ofproto *);
 250 void ofproto_wait(struct ofproto *);
 251 bool ofproto_is_alive(const struct ofproto *);
 252
 253 void ofproto_get_memory_usage(const struct ofproto *, struct simap *);
 254 void ofproto_type_get_memory_usage(const char *datapath_type, struct simap *);
 255
 256 /* A port within an OpenFlow switch.
 257  *
 258  * 'name' and 'type' are suitable for passing to netdev_open(). */
 259 struct ofproto_port {
 260     char *name;                 /* Network device name, e.g. "eth0". */
 261     char *type;                 /* Network device type, e.g. "system". */
 262     ofp_port_t ofp_port;        /* OpenFlow port number. */
 263 };
 264 void ofproto_port_clone(struct ofproto_port *, const struct ofproto_port *);
 265 void ofproto_port_destroy(struct ofproto_port *);
 266
 267 struct ofproto_port_dump {
 268     const struct ofproto *ofproto;
 269     int error;
 270     void *state;
 271 };
 272 void ofproto_port_dump_start(struct ofproto_port_dump *,
 273                              const struct ofproto *);
 274 bool ofproto_port_dump_next(struct ofproto_port_dump *, struct ofproto_port *);
 275 int ofproto_port_dump_done(struct ofproto_port_dump *);
 276
 277 /* Iterates through each OFPROTO_PORT in OFPROTO, using DUMP as state.
 278  *
 279  * Arguments all have pointer type.
 280  *
 281  * If you break out of the loop, then you need to free the dump structure by
 282  * hand using ofproto_port_dump_done(). */
 283 #define OFPROTO_PORT_FOR_EACH(OFPROTO_PORT, DUMP, OFPROTO)  \
 284     for (ofproto_port_dump_start(DUMP, OFPROTO);            \
 285          (ofproto_port_dump_next(DUMP, OFPROTO_PORT)        \
 286           ? true                                            \
 287           : (ofproto_port_dump_done(DUMP), false));         \
 288         )
 289
 290 #define OFPROTO_FLOW_LIMIT_DEFAULT 200000
 291 #define OFPROTO_MAX_IDLE_DEFAULT 10000 /* ms */
 292
 293 const char *ofproto_port_open_type(const struct ofproto *,
 294                                    const char *port_type);
 295 int ofproto_port_add(struct ofproto *, struct netdev *, ofp_port_t *ofp_portp);
 296 int ofproto_port_del(struct ofproto *, ofp_port_t ofp_port);
 297 void ofproto_port_set_config(struct ofproto *, ofp_port_t ofp_port,
 298                              const struct smap *cfg);
 299 int ofproto_port_get_stats(const struct ofport *, struct netdev_stats *stats);
 300
 301 int ofproto_port_query_by_name(const struct ofproto *, const char *devname,
 302                                struct ofproto_port *);
 303
 304 /* Top-level configuration. */
 305 uint64_t ofproto_get_datapath_id(const struct ofproto *);
 306 void ofproto_set_datapath_id(struct ofproto *, uint64_t datapath_id);
 307 void ofproto_set_controllers(struct ofproto *,
 308                              const struct ofproto_controller *, size_t n,
 309                              uint32_t allowed_versions);
 310 void ofproto_set_fail_mode(struct ofproto *, enum ofproto_fail_mode fail_mode);
 311 void ofproto_reconnect_controllers(struct ofproto *);
 312 void ofproto_set_extra_in_band_remotes(struct ofproto *,
 313                                        const struct sockaddr_in *, size_t n);
 314 void ofproto_set_in_band_queue(struct ofproto *, int queue_id);
 315 void ofproto_set_bundle_idle_timeout(unsigned timeout);
 316 void ofproto_set_flow_limit(unsigned limit);
 317 void ofproto_set_max_idle(unsigned max_idle);
 318 void ofproto_set_forward_bpdu(struct ofproto *, bool forward_bpdu);
 319 void ofproto_set_mac_table_config(struct ofproto *, unsigned idle_time,
 320                                   size_t max_entries);
 321 int ofproto_set_mcast_snooping(struct ofproto *ofproto,
 322                               const struct ofproto_mcast_snooping_settings *s);
 323 int ofproto_port_set_mcast_snooping(struct ofproto *ofproto, void *aux,
 324                           const struct ofproto_mcast_snooping_port_settings *s);
 325 void ofproto_set_threads(int n_handlers, int n_revalidators);
 326 void ofproto_type_set_config(const char *type,
 327                              const struct smap *other_config);
 328 void ofproto_set_dp_desc(struct ofproto *, const char *dp_desc);
 329 int ofproto_set_snoops(struct ofproto *, const struct sset *snoops);
 330 int ofproto_set_netflow(struct ofproto *,
 331                         const struct netflow_options *nf_options);
 332 int ofproto_set_sflow(struct ofproto *, const struct ofproto_sflow_options *);
 333 int ofproto_set_ipfix(struct ofproto *,
 334                       const struct ofproto_ipfix_bridge_exporter_options *,
 335                       const struct ofproto_ipfix_flow_exporter_options *,
 336                       size_t);
 337 void ofproto_set_flow_restore_wait(bool flow_restore_wait_db);
 338 bool ofproto_get_flow_restore_wait(void);
 339 int ofproto_set_stp(struct ofproto *, const struct ofproto_stp_settings *);
 340 int ofproto_get_stp_status(struct ofproto *, struct ofproto_stp_status *);
 341
 342 int ofproto_set_rstp(struct ofproto *, const struct ofproto_rstp_settings *);
 343 int ofproto_get_rstp_status(struct ofproto *, struct ofproto_rstp_status *);
 344 void ofproto_set_vlan_limit(int vlan_limit);
 345
 346 /* Configuration of ports. */
 347 void ofproto_port_unregister(struct ofproto *, ofp_port_t ofp_port);
 348
 349 void ofproto_port_clear_cfm(struct ofproto *, ofp_port_t ofp_port);
 350 void ofproto_port_set_cfm(struct ofproto *, ofp_port_t ofp_port,
 351                           const struct cfm_settings *);
 352 void ofproto_port_set_bfd(struct ofproto *, ofp_port_t ofp_port,
 353                           const struct smap *cfg);
 354 bool ofproto_port_bfd_status_changed(struct ofproto *, ofp_port_t ofp_port);
 355 int ofproto_port_get_bfd_status(struct ofproto *, ofp_port_t ofp_port,
 356                                 struct smap *);
 357 int ofproto_port_is_lacp_current(struct ofproto *, ofp_port_t ofp_port);
 358 int ofproto_port_get_lacp_stats(const struct ofport *, struct lacp_slave_stats *);
 359 int ofproto_port_set_stp(struct ofproto *, ofp_port_t ofp_port,
 360                          const struct ofproto_port_stp_settings *);
 361 int ofproto_port_get_stp_status(struct ofproto *, ofp_port_t ofp_port,
 362                                 struct ofproto_port_stp_status *);
 363 int ofproto_port_get_stp_stats(struct ofproto *, ofp_port_t ofp_port,
 364                                struct ofproto_port_stp_stats *);
 365 int ofproto_port_set_queues(struct ofproto *, ofp_port_t ofp_port,
 366                             const struct ofproto_port_queue *,
 367                             size_t n_queues);
 368 int ofproto_port_get_rstp_status(struct ofproto *, ofp_port_t ofp_port,
 369                                 struct ofproto_port_rstp_status *);
 370
 371 int ofproto_port_set_rstp(struct ofproto *, ofp_port_t ofp_port,
 372         const struct ofproto_port_rstp_settings *);
 373
 374 /* The behaviour of the port regarding VLAN handling */
 375 enum port_vlan_mode {
 376     /* This port is an access port.  'vlan' is the VLAN ID.  'trunks' is
 377      * ignored. */
 378     PORT_VLAN_ACCESS,
 379
 380     /* This port is a trunk.  'trunks' is the set of trunks. 'vlan' is
 381      * ignored. */
 382     PORT_VLAN_TRUNK,
 383
 384     /* Untagged incoming packets are part of 'vlan', as are incoming packets
 385      * tagged with 'vlan'.  Outgoing packets tagged with 'vlan' stay tagged.
 386      * Other VLANs in 'trunks' are trunked. */
 387     PORT_VLAN_NATIVE_TAGGED,
 388
 389     /* Untagged incoming packets are part of 'vlan', as are incoming packets
 390      * tagged with 'vlan'.  Outgoing packets tagged with 'vlan' are untagged.
 391      * Other VLANs in 'trunks' are trunked. */
 392     PORT_VLAN_NATIVE_UNTAGGED,
 393
 394     /* 802.1q tunnel port. Incoming packets are added an outer vlan tag
 395      * 'vlan'. If 'cvlans' is set, only allows VLANs in 'cvlans'. */
 396     PORT_VLAN_DOT1Q_TUNNEL
 397 };
 398
 399 /* Configuration of bundles. */
 400 struct ofproto_bundle_settings {
 401     char *name;                 /* For use in log messages. */
 402
 403     ofp_port_t *slaves;         /* OpenFlow port numbers for slaves. */
 404     size_t n_slaves;
 405
 406     enum port_vlan_mode vlan_mode; /* Selects mode for vlan and trunks */
 407     uint16_t qinq_ethtype;
 408     int vlan;                   /* VLAN VID, except for PORT_VLAN_TRUNK. */
 409     unsigned long *trunks;      /* vlan_bitmap, except for PORT_VLAN_ACCESS. */
 410     unsigned long *cvlans;
 411     bool use_priority_tags;     /* Use 802.1p tag for frames in VLAN 0? */
 412
 413     struct bond_settings *bond; /* Must be nonnull iff if n_slaves > 1. */
 414
 415     struct lacp_settings *lacp;              /* Nonnull to enable LACP. */
 416     struct lacp_slave_settings *lacp_slaves; /* Array of n_slaves elements. */
 417
 418     bool protected;             /* Protected port mode */
 419 };
 420
 421 int ofproto_bundle_register(struct ofproto *, void *aux,
 422                             const struct ofproto_bundle_settings *);
 423 int ofproto_bundle_unregister(struct ofproto *, void *aux);
 424
 425 /* Configuration of mirrors. */
 426 struct ofproto_mirror_settings {
 427     /* Name for log messages. */
 428     char *name;
 429
 430     /* Bundles that select packets for mirroring upon ingress.  */
 431     void **srcs;                /* A set of registered ofbundle handles. */
 432     size_t n_srcs;
 433
 434     /* Bundles that select packets for mirroring upon egress.  */
 435     void **dsts;                /* A set of registered ofbundle handles. */
 436     size_t n_dsts;
 437
 438     /* VLANs of packets to select for mirroring. */
 439     unsigned long *src_vlans;   /* vlan_bitmap, NULL selects all VLANs. */
 440
 441     /* Output (mutually exclusive). */
 442     void *out_bundle;           /* A registered ofbundle handle or NULL. */
 443     uint16_t out_vlan;          /* Output VLAN, only if out_bundle is NULL. */
 444     uint16_t snaplen;           /* Max packet size of a mirrored packet
 445                                    in byte, set to 0 equals 65535. */
 446 };
 447
 448 int ofproto_mirror_register(struct ofproto *, void *aux,
 449                             const struct ofproto_mirror_settings *);
 450 int ofproto_mirror_unregister(struct ofproto *, void *aux);
 451 int ofproto_mirror_get_stats(struct ofproto *, void *aux,
 452                              uint64_t *packets, uint64_t *bytes);
 453
 454 void ofproto_port_set_lldp(struct ofproto *ofproto, ofp_port_t ofp_port,
 455                            const struct smap *cfg);
 456 int ofproto_set_aa(struct ofproto *ofproto, void *aux,
 457                    const struct aa_settings *s);
 458 int ofproto_aa_mapping_register(struct ofproto *ofproto, void *aux,
 459                              const struct aa_mapping_settings *s);
 460 int ofproto_aa_mapping_unregister(struct ofproto *ofproto, void *aux);
 461 int ofproto_aa_vlan_get_queued(struct ofproto *ofproto, struct ovs_list *list);
 462 unsigned int ofproto_aa_vlan_get_queue_size(struct ofproto *ofproto);
 463
 464 int ofproto_set_flood_vlans(struct ofproto *, unsigned long *flood_vlans);
 465 bool ofproto_is_mirror_output_bundle(const struct ofproto *, void *aux);
 466
 467 /* Configuration of OpenFlow tables. */
 468 struct ofproto_table_settings {
 469     char *name;                 /* Name exported via OpenFlow or NULL. */
 470     unsigned int max_flows;     /* Maximum number of flows or UINT_MAX. */
 471
 472     /* These members, together with OpenFlow OFPT_TABLE_MOD, determine the
 473      * handling of an attempt to add a flow that would cause the table to have
 474      * more than 'max_flows' flows:
 475      *
 476      *    - If 'enable_eviction' is false and OFPT_TABLE_MOD does not enable
 477      *      eviction, overflows will be rejected with an error.
 478      *
 479      *    - If 'enable_eviction' is true or OFPT_TABLE_MOD enables eviction, an
 480      *      overflow will cause a flow to be removed.  The flow to be removed
 481      *      is chosen to give fairness among groups distinguished by different
 482      *      values for the 'n_groups' subfields within 'groups'. */
 483     bool enable_eviction;
 484     struct mf_subfield *groups;
 485     size_t n_groups;
 486
 487     /*
 488      * Fields for which prefix trie lookup is maintained.
 489      */
 490     unsigned int n_prefix_fields;
 491     enum mf_field_id prefix_fields[CLS_MAX_TRIES];
 492 };
 493
 494 extern const enum mf_field_id default_prefix_fields[2];
 495 BUILD_ASSERT_DECL(ARRAY_SIZE(default_prefix_fields) <= CLS_MAX_TRIES);
 496
 497 int ofproto_get_n_tables(const struct ofproto *);
 498 uint8_t ofproto_get_n_visible_tables(const struct ofproto *);
 499 void ofproto_configure_table(struct ofproto *, int table_id,
 500                              const struct ofproto_table_settings *);
 501
 502 /* Configuration querying. */
 503 bool ofproto_has_snoops(const struct ofproto *);
 504 void ofproto_get_snoops(const struct ofproto *, struct sset *);
 505 void ofproto_get_all_flows(struct ofproto *p, struct ds *);
 506 void ofproto_get_netflow_ids(const struct ofproto *,
 507                              uint8_t *engine_type, uint8_t *engine_id);
 508
 509 void ofproto_get_ofproto_controller_info(const struct ofproto *, struct shash *);
 510 void ofproto_free_ofproto_controller_info(struct shash *);
 511
 512 bool ofproto_port_cfm_status_changed(struct ofproto *, ofp_port_t ofp_port);
 513
 514 int ofproto_port_get_cfm_status(const struct ofproto *,
 515                                 ofp_port_t ofp_port,
 516                                 struct cfm_status *);
 517 \f
 518 /* Table configuration */
 519
 520 enum ofputil_table_miss ofproto_table_get_miss_config(const struct ofproto *,
 521                                                       uint8_t table_id);
 522
 523 #ifdef  __cplusplus
 524 }
 525 #endif
 526
 527 #endif /* ofproto.h */