lib/netdev-vport.c

   1 /*
   2  * Copyright (c) 2010, 2011, 2012, 2013 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 #include <config.h>
  18
  19 #include "netdev-vport.h"
  20
  21 #include <errno.h>
  22 #include <fcntl.h>
  23 #include <sys/socket.h>
  24 #include <net/if.h>
  25 #include <sys/ioctl.h>
  26
  27 #include "byte-order.h"
  28 #include "daemon.h"
  29 #include "dirs.h"
  30 #include "dpif.h"
  31 #include "hash.h"
  32 #include "hmap.h"
  33 #include "list.h"
  34 #include "netdev-provider.h"
  35 #include "ofpbuf.h"
  36 #include "packets.h"
  37 #include "route-table.h"
  38 #include "shash.h"
  39 #include "socket-util.h"
  40 #include "vlog.h"
  41
  42 VLOG_DEFINE_THIS_MODULE(netdev_vport);
  43
  44 /* Default to the OTV port, per the VXLAN IETF draft. */
  45 #define VXLAN_DST_PORT 8472
  46
  47 #define LISP_DST_PORT 4341
  48
  49 #define DEFAULT_TTL 64
  50
  51 struct netdev_dev_vport {
  52     struct netdev_dev netdev_dev;
  53     unsigned int change_seq;
  54     uint8_t etheraddr[ETH_ADDR_LEN];
  55     struct netdev_stats stats;
  56
  57     /* Tunnels. */
  58     struct netdev_tunnel_config tnl_cfg;
  59
  60     /* Patch Ports. */
  61     char *peer;
  62 };
  63
  64 struct vport_class {
  65     const char *dpif_port;
  66     struct netdev_class netdev_class;
  67 };
  68
  69 static int netdev_vport_create(const struct netdev_class *, const char *,
  70                                struct netdev_dev **);
  71 static int get_patch_config(struct netdev_dev *, struct smap *args);
  72 static int get_tunnel_config(struct netdev_dev *, struct smap *args);
  73 static void netdev_vport_poll_notify(struct netdev_dev_vport *);
  74
  75 static bool
  76 is_vport_class(const struct netdev_class *class)
  77 {
  78     return class->create == netdev_vport_create;
  79 }
  80
  81 static const struct vport_class *
  82 vport_class_cast(const struct netdev_class *class)
  83 {
  84     ovs_assert(is_vport_class(class));
  85     return CONTAINER_OF(class, struct vport_class, netdev_class);
  86 }
  87
  88 static struct netdev_dev_vport *
  89 netdev_dev_vport_cast(const struct netdev_dev *netdev_dev)
  90 {
  91     ovs_assert(is_vport_class(netdev_dev_get_class(netdev_dev)));
  92     return CONTAINER_OF(netdev_dev, struct netdev_dev_vport, netdev_dev);
  93 }
  94
  95 static struct netdev_dev_vport *
  96 netdev_vport_get_dev(const struct netdev *netdev)
  97 {
  98     return netdev_dev_vport_cast(netdev_get_dev(netdev));
  99 }
 100
 101 static const struct netdev_tunnel_config *
 102 get_netdev_tunnel_config(const struct netdev_dev *netdev_dev)
 103 {
 104     return &netdev_dev_vport_cast(netdev_dev)->tnl_cfg;
 105 }
 106
 107 bool
 108 netdev_vport_is_patch(const struct netdev *netdev)
 109 {
 110     const struct netdev_dev *dev = netdev_get_dev(netdev);
 111     const struct netdev_class *class = netdev_dev_get_class(dev);
 112
 113     return class->get_config == get_patch_config;
 114 }
 115
 116 static bool
 117 netdev_vport_needs_dst_port(const struct netdev_dev *dev)
 118 {
 119     const struct netdev_class *class = netdev_dev_get_class(dev);
 120     const char *type = netdev_dev_get_type(dev);
 121
 122     return (class->get_config == get_tunnel_config &&
 123             (!strcmp("vxlan", type) || !strcmp("lisp", type)));
 124 }
 125
 126 const char *
 127 netdev_vport_get_dpif_port(const struct netdev *netdev)
 128 {
 129     const struct netdev_dev *dev = netdev_get_dev(netdev);
 130     const struct netdev_class *class = netdev_dev_get_class(dev);
 131     const char *dpif_port;
 132
 133     if (netdev_vport_needs_dst_port(dev)) {
 134         const struct netdev_dev_vport *vport = netdev_vport_get_dev(netdev);
 135         const char *type = netdev_dev_get_type(dev);
 136         static char dpif_port_combined[IFNAMSIZ];
 137
 138         /*
 139          * Note: IFNAMSIZ is 16 bytes long. The maximum length of a VXLAN
 140          * or LISP port name below is 15 or 14 bytes respectively. Still,
 141          * assert here on the size of strlen(type) in case that changes
 142          * in the future.
 143          */
 144         ovs_assert(strlen(type) + 10 < IFNAMSIZ);
 145         snprintf(dpif_port_combined, IFNAMSIZ, "%s_sys_%d", type,
 146                  ntohs(vport->tnl_cfg.dst_port));
 147         return dpif_port_combined;
 148     } else {
 149         dpif_port = (is_vport_class(class)
 150                      ? vport_class_cast(class)->dpif_port
 151                      : NULL);
 152     }
 153
 154     return dpif_port ? dpif_port : netdev_get_name(netdev);
 155 }
 156
 157 static int
 158 netdev_vport_create(const struct netdev_class *netdev_class, const char *name,
 159                     struct netdev_dev **netdev_devp)
 160 {
 161     struct netdev_dev_vport *dev;
 162
 163     dev = xzalloc(sizeof *dev);
 164     netdev_dev_init(&dev->netdev_dev, name, netdev_class);
 165     dev->change_seq = 1;
 166     eth_addr_random(dev->etheraddr);
 167
 168     *netdev_devp = &dev->netdev_dev;
 169     route_table_register();
 170
 171     return 0;
 172 }
 173
 174 static void
 175 netdev_vport_destroy(struct netdev_dev *netdev_dev_)
 176 {
 177     struct netdev_dev_vport *netdev_dev = netdev_dev_vport_cast(netdev_dev_);
 178
 179     route_table_unregister();
 180     free(netdev_dev->peer);
 181     free(netdev_dev);
 182 }
 183
 184 static int
 185 netdev_vport_open(struct netdev_dev *netdev_dev, struct netdev **netdevp)
 186 {
 187     *netdevp = xmalloc(sizeof **netdevp);
 188     netdev_init(*netdevp, netdev_dev);
 189     return 0;
 190 }
 191
 192 static void
 193 netdev_vport_close(struct netdev *netdev)
 194 {
 195     free(netdev);
 196 }
 197
 198 static int
 199 netdev_vport_set_etheraddr(struct netdev *netdev,
 200                            const uint8_t mac[ETH_ADDR_LEN])
 201 {
 202     struct netdev_dev_vport *dev = netdev_vport_get_dev(netdev);
 203     memcpy(dev->etheraddr, mac, ETH_ADDR_LEN);
 204     netdev_vport_poll_notify(dev);
 205     return 0;
 206 }
 207
 208 static int
 209 netdev_vport_get_etheraddr(const struct netdev *netdev,
 210                            uint8_t mac[ETH_ADDR_LEN])
 211 {
 212     memcpy(mac, netdev_vport_get_dev(netdev)->etheraddr, ETH_ADDR_LEN);
 213     return 0;
 214 }
 215
 216 static int
 217 tunnel_get_status(const struct netdev *netdev, struct smap *smap)
 218 {
 219     static char iface[IFNAMSIZ];
 220     ovs_be32 route;
 221
 222     route = netdev_vport_get_dev(netdev)->tnl_cfg.ip_dst;
 223     if (route_table_get_name(route, iface)) {
 224         struct netdev *egress_netdev;
 225
 226         smap_add(smap, "tunnel_egress_iface", iface);
 227
 228         if (!netdev_open(iface, "system", &egress_netdev)) {
 229             smap_add(smap, "tunnel_egress_iface_carrier",
 230                      netdev_get_carrier(egress_netdev) ? "up" : "down");
 231             netdev_close(egress_netdev);
 232         }
 233     }
 234
 235     return 0;
 236 }
 237
 238 static int
 239 netdev_vport_update_flags(struct netdev *netdev OVS_UNUSED,
 240                         enum netdev_flags off, enum netdev_flags on OVS_UNUSED,
 241                         enum netdev_flags *old_flagsp)
 242 {
 243     if (off & (NETDEV_UP | NETDEV_PROMISC)) {
 244         return EOPNOTSUPP;
 245     }
 246
 247     *old_flagsp = NETDEV_UP | NETDEV_PROMISC;
 248     return 0;
 249 }
 250
 251 static unsigned int
 252 netdev_vport_change_seq(const struct netdev *netdev)
 253 {
 254     return netdev_vport_get_dev(netdev)->change_seq;
 255 }
 256
 257 static void
 258 netdev_vport_run(void)
 259 {
 260     route_table_run();
 261 }
 262
 263 static void
 264 netdev_vport_wait(void)
 265 {
 266     route_table_wait();
 267 }
 268 \f
 269 /* Helper functions. */
 270
 271 static void
 272 netdev_vport_poll_notify(struct netdev_dev_vport *ndv)
 273 {
 274     ndv->change_seq++;
 275     if (!ndv->change_seq) {
 276         ndv->change_seq++;
 277     }
 278 }
 279 \f
 280 /* Code specific to tunnel types. */
 281
 282 static ovs_be64
 283 parse_key(const struct smap *args, const char *name,
 284           bool *present, bool *flow)
 285 {
 286     const char *s;
 287
 288     *present = false;
 289     *flow = false;
 290
 291     s = smap_get(args, name);
 292     if (!s) {
 293         s = smap_get(args, "key");
 294         if (!s) {
 295             return 0;
 296         }
 297     }
 298
 299     *present = true;
 300
 301     if (!strcmp(s, "flow")) {
 302         *flow = true;
 303         return 0;
 304     } else {
 305         return htonll(strtoull(s, NULL, 0));
 306     }
 307 }
 308
 309 static int
 310 set_tunnel_config(struct netdev_dev *dev_, const struct smap *args)
 311 {
 312     struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
 313     const char *name = netdev_dev_get_name(dev_);
 314     const char *type = netdev_dev_get_type(dev_);
 315     bool ipsec_mech_set, needs_dst_port, has_csum;
 316     struct netdev_tunnel_config tnl_cfg;
 317     struct smap_node *node;
 318
 319     has_csum = strstr(type, "gre");
 320     ipsec_mech_set = false;
 321     memset(&tnl_cfg, 0, sizeof tnl_cfg);
 322
 323     needs_dst_port = netdev_vport_needs_dst_port(dev_);
 324     tnl_cfg.ipsec = strstr(type, "ipsec");
 325     tnl_cfg.dont_fragment = true;
 326
 327     SMAP_FOR_EACH (node, args) {
 328         if (!strcmp(node->key, "remote_ip")) {
 329             struct in_addr in_addr;
 330             if (lookup_ip(node->value, &in_addr)) {
 331                 VLOG_WARN("%s: bad %s 'remote_ip'", name, type);
 332             } else {
 333                 tnl_cfg.ip_dst = in_addr.s_addr;
 334             }
 335         } else if (!strcmp(node->key, "local_ip")) {
 336             struct in_addr in_addr;
 337             if (lookup_ip(node->value, &in_addr)) {
 338                 VLOG_WARN("%s: bad %s 'local_ip'", name, type);
 339             } else {
 340                 tnl_cfg.ip_src = in_addr.s_addr;
 341             }
 342         } else if (!strcmp(node->key, "tos")) {
 343             if (!strcmp(node->value, "inherit")) {
 344                 tnl_cfg.tos_inherit = true;
 345             } else {
 346                 char *endptr;
 347                 int tos;
 348                 tos = strtol(node->value, &endptr, 0);
 349                 if (*endptr == '\0' && tos == (tos & IP_DSCP_MASK)) {
 350                     tnl_cfg.tos = tos;
 351                 } else {
 352                     VLOG_WARN("%s: invalid TOS %s", name, node->value);
 353                 }
 354             }
 355         } else if (!strcmp(node->key, "ttl")) {
 356             if (!strcmp(node->value, "inherit")) {
 357                 tnl_cfg.ttl_inherit = true;
 358             } else {
 359                 tnl_cfg.ttl = atoi(node->value);
 360             }
 361         } else if (!strcmp(node->key, "dst_port") && needs_dst_port) {
 362             tnl_cfg.dst_port = htons(atoi(node->value));
 363         } else if (!strcmp(node->key, "csum") && has_csum) {
 364             if (!strcmp(node->value, "true")) {
 365                 tnl_cfg.csum = true;
 366             }
 367         } else if (!strcmp(node->key, "df_default")) {
 368             if (!strcmp(node->value, "false")) {
 369                 tnl_cfg.dont_fragment = false;
 370             }
 371         } else if (!strcmp(node->key, "peer_cert") && tnl_cfg.ipsec) {
 372             if (smap_get(args, "certificate")) {
 373                 ipsec_mech_set = true;
 374             } else {
 375                 const char *use_ssl_cert;
 376
 377                 /* If the "use_ssl_cert" is true, then "certificate" and
 378                  * "private_key" will be pulled from the SSL table.  The
 379                  * use of this option is strongly discouraged, since it
 380                  * will like be removed when multiple SSL configurations
 381                  * are supported by OVS.
 382                  */
 383                 use_ssl_cert = smap_get(args, "use_ssl_cert");
 384                 if (!use_ssl_cert || strcmp(use_ssl_cert, "true")) {
 385                     VLOG_ERR("%s: 'peer_cert' requires 'certificate' argument",
 386                              name);
 387                     return EINVAL;
 388                 }
 389                 ipsec_mech_set = true;
 390             }
 391         } else if (!strcmp(node->key, "psk") && tnl_cfg.ipsec) {
 392             ipsec_mech_set = true;
 393         } else if (tnl_cfg.ipsec
 394                 && (!strcmp(node->key, "certificate")
 395                     || !strcmp(node->key, "private_key")
 396                     || !strcmp(node->key, "use_ssl_cert"))) {
 397             /* Ignore options not used by the netdev. */
 398         } else if (!strcmp(node->key, "key") ||
 399                    !strcmp(node->key, "in_key") ||
 400                    !strcmp(node->key, "out_key")) {
 401             /* Handled separately below. */
 402         } else {
 403             VLOG_WARN("%s: unknown %s argument '%s'", name, type, node->key);
 404         }
 405     }
 406
 407     /* Add a default destination port for VXLAN if none specified. */
 408     if (!strcmp(type, "vxlan") && !tnl_cfg.dst_port) {
 409         tnl_cfg.dst_port = htons(VXLAN_DST_PORT);
 410     }
 411
 412     /* Add a default destination port for LISP if none specified. */
 413     if (!strcmp(type, "lisp") && !tnl_cfg.dst_port) {
 414         tnl_cfg.dst_port = htons(LISP_DST_PORT);
 415     }
 416
 417     if (tnl_cfg.ipsec) {
 418         static pid_t pid = 0;
 419         if (pid <= 0) {
 420             char *file_name = xasprintf("%s/%s", ovs_rundir(),
 421                                         "ovs-monitor-ipsec.pid");
 422             pid = read_pidfile(file_name);
 423             free(file_name);
 424         }
 425
 426         if (pid < 0) {
 427             VLOG_ERR("%s: IPsec requires the ovs-monitor-ipsec daemon",
 428                      name);
 429             return EINVAL;
 430         }
 431
 432         if (smap_get(args, "peer_cert") && smap_get(args, "psk")) {
 433             VLOG_ERR("%s: cannot define both 'peer_cert' and 'psk'", name);
 434             return EINVAL;
 435         }
 436
 437         if (!ipsec_mech_set) {
 438             VLOG_ERR("%s: IPsec requires an 'peer_cert' or psk' argument",
 439                      name);
 440             return EINVAL;
 441         }
 442     }
 443
 444     if (!tnl_cfg.ip_dst) {
 445         VLOG_ERR("%s: %s type requires valid 'remote_ip' argument",
 446                  name, type);
 447         return EINVAL;
 448     }
 449
 450     if (tnl_cfg.ip_src) {
 451         if (ip_is_multicast(tnl_cfg.ip_dst)) {
 452             VLOG_WARN("%s: remote_ip is multicast, ignoring local_ip", name);
 453             tnl_cfg.ip_src = 0;
 454         }
 455     }
 456
 457     if (!tnl_cfg.ttl) {
 458         tnl_cfg.ttl = DEFAULT_TTL;
 459     }
 460
 461     tnl_cfg.in_key = parse_key(args, "in_key",
 462                                &tnl_cfg.in_key_present,
 463                                &tnl_cfg.in_key_flow);
 464
 465     tnl_cfg.out_key = parse_key(args, "out_key",
 466                                &tnl_cfg.out_key_present,
 467                                &tnl_cfg.out_key_flow);
 468
 469     dev->tnl_cfg = tnl_cfg;
 470     netdev_vport_poll_notify(dev);
 471
 472     return 0;
 473 }
 474
 475 static int
 476 get_tunnel_config(struct netdev_dev *dev, struct smap *args)
 477 {
 478     const struct netdev_tunnel_config *tnl_cfg =
 479         &netdev_dev_vport_cast(dev)->tnl_cfg;
 480
 481     if (tnl_cfg->ip_dst) {
 482         smap_add_format(args, "remote_ip", IP_FMT, IP_ARGS(tnl_cfg->ip_dst));
 483     }
 484
 485     if (tnl_cfg->ip_src) {
 486         smap_add_format(args, "local_ip", IP_FMT, IP_ARGS(tnl_cfg->ip_src));
 487     }
 488
 489     if (tnl_cfg->in_key_flow && tnl_cfg->out_key_flow) {
 490         smap_add(args, "key", "flow");
 491     } else if (tnl_cfg->in_key_present && tnl_cfg->out_key_present
 492                && tnl_cfg->in_key == tnl_cfg->out_key) {
 493         smap_add_format(args, "key", "%"PRIu64, ntohll(tnl_cfg->in_key));
 494     } else {
 495         if (tnl_cfg->in_key_flow) {
 496             smap_add(args, "in_key", "flow");
 497         } else if (tnl_cfg->in_key_present) {
 498             smap_add_format(args, "in_key", "%"PRIu64,
 499                             ntohll(tnl_cfg->in_key));
 500         }
 501
 502         if (tnl_cfg->out_key_flow) {
 503             smap_add(args, "out_key", "flow");
 504         } else if (tnl_cfg->out_key_present) {
 505             smap_add_format(args, "out_key", "%"PRIu64,
 506                             ntohll(tnl_cfg->out_key));
 507         }
 508     }
 509
 510     if (tnl_cfg->ttl_inherit) {
 511         smap_add(args, "ttl", "inherit");
 512     } else if (tnl_cfg->ttl != DEFAULT_TTL) {
 513         smap_add_format(args, "ttl", "%"PRIu8, tnl_cfg->ttl);
 514     }
 515
 516     if (tnl_cfg->tos_inherit) {
 517         smap_add(args, "tos", "inherit");
 518     } else if (tnl_cfg->tos) {
 519         smap_add_format(args, "tos", "0x%x", tnl_cfg->tos);
 520     }
 521
 522     if (tnl_cfg->dst_port) {
 523         uint16_t dst_port = ntohs(tnl_cfg->dst_port);
 524         if (dst_port != VXLAN_DST_PORT) {
 525             smap_add_format(args, "dst_port", "%d", dst_port);
 526         }
 527     }
 528
 529     if (tnl_cfg->csum) {
 530         smap_add(args, "csum", "true");
 531     }
 532
 533     if (!tnl_cfg->dont_fragment) {
 534         smap_add(args, "df_default", "false");
 535     }
 536
 537     return 0;
 538 }
 539 \f
 540 /* Code specific to patch ports. */
 541
 542 const char *
 543 netdev_vport_patch_peer(const struct netdev *netdev)
 544 {
 545     return netdev_vport_is_patch(netdev)
 546         ? netdev_vport_get_dev(netdev)->peer
 547         : NULL;
 548 }
 549
 550 void
 551 netdev_vport_inc_rx(const struct netdev *netdev,
 552                           const struct dpif_flow_stats *stats)
 553 {
 554     if (is_vport_class(netdev_dev_get_class(netdev_get_dev(netdev)))) {
 555         struct netdev_dev_vport *dev = netdev_vport_get_dev(netdev);
 556         dev->stats.rx_packets += stats->n_packets;
 557         dev->stats.rx_bytes += stats->n_bytes;
 558     }
 559 }
 560
 561 void
 562 netdev_vport_inc_tx(const struct netdev *netdev,
 563                     const struct dpif_flow_stats *stats)
 564 {
 565     if (is_vport_class(netdev_dev_get_class(netdev_get_dev(netdev)))) {
 566         struct netdev_dev_vport *dev = netdev_vport_get_dev(netdev);
 567         dev->stats.tx_packets += stats->n_packets;
 568         dev->stats.tx_bytes += stats->n_bytes;
 569     }
 570 }
 571
 572 static int
 573 get_patch_config(struct netdev_dev *dev_, struct smap *args)
 574 {
 575     struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
 576
 577     if (dev->peer) {
 578         smap_add(args, "peer", dev->peer);
 579     }
 580     return 0;
 581 }
 582
 583 static int
 584 set_patch_config(struct netdev_dev *dev_, const struct smap *args)
 585 {
 586     struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
 587     const char *name = netdev_dev_get_name(dev_);
 588     const char *peer;
 589
 590     peer = smap_get(args, "peer");
 591     if (!peer) {
 592         VLOG_ERR("%s: patch type requires valid 'peer' argument", name);
 593         return EINVAL;
 594     }
 595
 596     if (smap_count(args) > 1) {
 597         VLOG_ERR("%s: patch type takes only a 'peer' argument", name);
 598         return EINVAL;
 599     }
 600
 601     if (!strcmp(name, peer)) {
 602         VLOG_ERR("%s: patch peer must not be self", name);
 603         return EINVAL;
 604     }
 605
 606     free(dev->peer);
 607     dev->peer = xstrdup(peer);
 608
 609     return 0;
 610 }
 611
 612 static int
 613 get_stats(const struct netdev *netdev, struct netdev_stats *stats)
 614 {
 615     struct netdev_dev_vport *dev = netdev_vport_get_dev(netdev);
 616     memcpy(stats, &dev->stats, sizeof *stats);
 617     return 0;
 618 }
 619 \f
 620 #define VPORT_FUNCTIONS(GET_CONFIG, SET_CONFIG,             \
 621                         GET_TUNNEL_CONFIG, GET_STATUS)      \
 622     NULL,                                                   \
 623     netdev_vport_run,                                       \
 624     netdev_vport_wait,                                      \
 625                                                             \
 626     netdev_vport_create,                                    \
 627     netdev_vport_destroy,                                   \
 628     GET_CONFIG,                                             \
 629     SET_CONFIG,                                             \
 630     GET_TUNNEL_CONFIG,                                      \
 631                                                             \
 632     netdev_vport_open,                                      \
 633     netdev_vport_close,                                     \
 634                                                             \
 635     NULL,                       /* listen */                \
 636     NULL,                       /* recv */                  \
 637     NULL,                       /* recv_wait */             \
 638     NULL,                       /* drain */                 \
 639                                                             \
 640     NULL,                       /* send */                  \
 641     NULL,                       /* send_wait */             \
 642                                                             \
 643     netdev_vport_set_etheraddr,                             \
 644     netdev_vport_get_etheraddr,                             \
 645     NULL,                       /* get_mtu */               \
 646     NULL,                       /* set_mtu */               \
 647     NULL,                       /* get_ifindex */           \
 648     NULL,                       /* get_carrier */           \
 649     NULL,                       /* get_carrier_resets */    \
 650     NULL,                       /* get_miimon */            \
 651     get_stats,                                              \
 652     NULL,                       /* set_stats */             \
 653                                                             \
 654     NULL,                       /* get_features */          \
 655     NULL,                       /* set_advertisements */    \
 656                                                             \
 657     NULL,                       /* set_policing */          \
 658     NULL,                       /* get_qos_types */         \
 659     NULL,                       /* get_qos_capabilities */  \
 660     NULL,                       /* get_qos */               \
 661     NULL,                       /* set_qos */               \
 662     NULL,                       /* get_queue */             \
 663     NULL,                       /* set_queue */             \
 664     NULL,                       /* delete_queue */          \
 665     NULL,                       /* get_queue_stats */       \
 666     NULL,                       /* dump_queues */           \
 667     NULL,                       /* dump_queue_stats */      \
 668                                                             \
 669     NULL,                       /* get_in4 */               \
 670     NULL,                       /* set_in4 */               \
 671     NULL,                       /* get_in6 */               \
 672     NULL,                       /* add_router */            \
 673     NULL,                       /* get_next_hop */          \
 674     GET_STATUS,                                             \
 675     NULL,                       /* arp_lookup */            \
 676                                                             \
 677     netdev_vport_update_flags,                              \
 678                                                             \
 679     netdev_vport_change_seq
 680
 681 #define TUNNEL_CLASS(NAME, DPIF_PORT)                       \
 682     { DPIF_PORT,                                            \
 683         { NAME, VPORT_FUNCTIONS(get_tunnel_config,          \
 684                                 set_tunnel_config,          \
 685                                 get_netdev_tunnel_config,   \
 686                                 tunnel_get_status) }}
 687
 688 void
 689 netdev_vport_tunnel_register(void)
 690 {
 691     static const struct vport_class vport_classes[] = {
 692         TUNNEL_CLASS("gre", "gre_system"),
 693         TUNNEL_CLASS("ipsec_gre", "gre_system"),
 694         TUNNEL_CLASS("gre64", "gre64_system"),
 695         TUNNEL_CLASS("ipsec_gre64", "gre64_system"),
 696         TUNNEL_CLASS("vxlan", "vxlan_system"),
 697         TUNNEL_CLASS("lisp", "lisp_system")
 698     };
 699
 700     int i;
 701
 702     for (i = 0; i < ARRAY_SIZE(vport_classes); i++) {
 703         netdev_register_provider(&vport_classes[i].netdev_class);
 704     }
 705 }
 706
 707 void
 708 netdev_vport_patch_register(void)
 709 {
 710     static const struct vport_class patch_class =
 711         { NULL,
 712             { "patch", VPORT_FUNCTIONS(get_patch_config,
 713                                        set_patch_config,
 714                                        NULL,
 715                                        NULL) }};
 716     netdev_register_provider(&patch_class.netdev_class);
 717 }