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 #define VXLAN_DST_PORT 4789
  45 #define LISP_DST_PORT 4341
  46
  47 #define DEFAULT_TTL 64
  48
  49 struct netdev_dev_vport {
  50     struct netdev_dev netdev_dev;
  51     unsigned int change_seq;
  52     uint8_t etheraddr[ETH_ADDR_LEN];
  53     struct netdev_stats stats;
  54
  55     /* Tunnels. */
  56     struct netdev_tunnel_config tnl_cfg;
  57
  58     /* Patch Ports. */
  59     char *peer;
  60 };
  61
  62 struct vport_class {
  63     const char *dpif_port;
  64     struct netdev_class netdev_class;
  65 };
  66
  67 static int netdev_vport_create(const struct netdev_class *, const char *,
  68                                struct netdev_dev **);
  69 static int get_patch_config(struct netdev_dev *, struct smap *args);
  70 static int get_tunnel_config(struct netdev_dev *, struct smap *args);
  71 static void netdev_vport_poll_notify(struct netdev_dev_vport *);
  72
  73 static bool
  74 is_vport_class(const struct netdev_class *class)
  75 {
  76     return class->create == netdev_vport_create;
  77 }
  78
  79 static const struct vport_class *
  80 vport_class_cast(const struct netdev_class *class)
  81 {
  82     ovs_assert(is_vport_class(class));
  83     return CONTAINER_OF(class, struct vport_class, netdev_class);
  84 }
  85
  86 static struct netdev_dev_vport *
  87 netdev_dev_vport_cast(const struct netdev_dev *netdev_dev)
  88 {
  89     ovs_assert(is_vport_class(netdev_dev_get_class(netdev_dev)));
  90     return CONTAINER_OF(netdev_dev, struct netdev_dev_vport, netdev_dev);
  91 }
  92
  93 static struct netdev_dev_vport *
  94 netdev_vport_get_dev(const struct netdev *netdev)
  95 {
  96     return netdev_dev_vport_cast(netdev_get_dev(netdev));
  97 }
  98
  99 static const struct netdev_tunnel_config *
 100 get_netdev_tunnel_config(const struct netdev_dev *netdev_dev)
 101 {
 102     return &netdev_dev_vport_cast(netdev_dev)->tnl_cfg;
 103 }
 104
 105 bool
 106 netdev_vport_is_patch(const struct netdev *netdev)
 107 {
 108     const struct netdev_dev *dev = netdev_get_dev(netdev);
 109     const struct netdev_class *class = netdev_dev_get_class(dev);
 110
 111     return class->get_config == get_patch_config;
 112 }
 113
 114 static bool
 115 netdev_vport_needs_dst_port(const struct netdev_dev *dev)
 116 {
 117     const struct netdev_class *class = netdev_dev_get_class(dev);
 118     const char *type = netdev_dev_get_type(dev);
 119
 120     return (class->get_config == get_tunnel_config &&
 121             (!strcmp("vxlan", type) || !strcmp("lisp", type)));
 122 }
 123
 124 const char *
 125 netdev_vport_get_dpif_port(const struct netdev *netdev)
 126 {
 127     const struct netdev_dev *dev = netdev_get_dev(netdev);
 128     const struct netdev_class *class = netdev_dev_get_class(dev);
 129     const char *dpif_port;
 130
 131     if (netdev_vport_needs_dst_port(dev)) {
 132         const struct netdev_dev_vport *vport = netdev_vport_get_dev(netdev);
 133         const char *type = netdev_dev_get_type(dev);
 134         static char dpif_port_combined[IFNAMSIZ];
 135
 136         /*
 137          * Note: IFNAMSIZ is 16 bytes long. The maximum length of a VXLAN
 138          * or LISP port name below is 15 or 14 bytes respectively. Still,
 139          * assert here on the size of strlen(type) in case that changes
 140          * in the future.
 141          */
 142         ovs_assert(strlen(type) + 10 < IFNAMSIZ);
 143         snprintf(dpif_port_combined, IFNAMSIZ, "%s_sys_%d", type,
 144                  ntohs(vport->tnl_cfg.dst_port));
 145         return dpif_port_combined;
 146     } else {
 147         dpif_port = (is_vport_class(class)
 148                      ? vport_class_cast(class)->dpif_port
 149                      : NULL);
 150     }
 151
 152     return dpif_port ? dpif_port : netdev_get_name(netdev);
 153 }
 154
 155 static int
 156 netdev_vport_create(const struct netdev_class *netdev_class, const char *name,
 157                     struct netdev_dev **netdev_devp)
 158 {
 159     struct netdev_dev_vport *dev;
 160
 161     dev = xzalloc(sizeof *dev);
 162     netdev_dev_init(&dev->netdev_dev, name, netdev_class);
 163     dev->change_seq = 1;
 164     eth_addr_random(dev->etheraddr);
 165
 166     *netdev_devp = &dev->netdev_dev;
 167     route_table_register();
 168
 169     return 0;
 170 }
 171
 172 static void
 173 netdev_vport_destroy(struct netdev_dev *netdev_dev_)
 174 {
 175     struct netdev_dev_vport *netdev_dev = netdev_dev_vport_cast(netdev_dev_);
 176
 177     route_table_unregister();
 178     free(netdev_dev->peer);
 179     free(netdev_dev);
 180 }
 181
 182 static int
 183 netdev_vport_open(struct netdev_dev *netdev_dev, struct netdev **netdevp)
 184 {
 185     *netdevp = xmalloc(sizeof **netdevp);
 186     netdev_init(*netdevp, netdev_dev);
 187     return 0;
 188 }
 189
 190 static void
 191 netdev_vport_close(struct netdev *netdev)
 192 {
 193     free(netdev);
 194 }
 195
 196 static int
 197 netdev_vport_set_etheraddr(struct netdev *netdev,
 198                            const uint8_t mac[ETH_ADDR_LEN])
 199 {
 200     struct netdev_dev_vport *dev = netdev_vport_get_dev(netdev);
 201     memcpy(dev->etheraddr, mac, ETH_ADDR_LEN);
 202     netdev_vport_poll_notify(dev);
 203     return 0;
 204 }
 205
 206 static int
 207 netdev_vport_get_etheraddr(const struct netdev *netdev,
 208                            uint8_t mac[ETH_ADDR_LEN])
 209 {
 210     memcpy(mac, netdev_vport_get_dev(netdev)->etheraddr, ETH_ADDR_LEN);
 211     return 0;
 212 }
 213
 214 static int
 215 tunnel_get_status(const struct netdev *netdev, struct smap *smap)
 216 {
 217     static char iface[IFNAMSIZ];
 218     ovs_be32 route;
 219
 220     route = netdev_vport_get_dev(netdev)->tnl_cfg.ip_dst;
 221     if (route_table_get_name(route, iface)) {
 222         struct netdev *egress_netdev;
 223
 224         smap_add(smap, "tunnel_egress_iface", iface);
 225
 226         if (!netdev_open(iface, "system", &egress_netdev)) {
 227             smap_add(smap, "tunnel_egress_iface_carrier",
 228                      netdev_get_carrier(egress_netdev) ? "up" : "down");
 229             netdev_close(egress_netdev);
 230         }
 231     }
 232
 233     return 0;
 234 }
 235
 236 static int
 237 netdev_vport_update_flags(struct netdev_dev *netdev_dev OVS_UNUSED,
 238                         enum netdev_flags off, enum netdev_flags on OVS_UNUSED,
 239                         enum netdev_flags *old_flagsp)
 240 {
 241     if (off & (NETDEV_UP | NETDEV_PROMISC)) {
 242         return EOPNOTSUPP;
 243     }
 244
 245     *old_flagsp = NETDEV_UP | NETDEV_PROMISC;
 246     return 0;
 247 }
 248
 249 static unsigned int
 250 netdev_vport_change_seq(const struct netdev *netdev)
 251 {
 252     return netdev_vport_get_dev(netdev)->change_seq;
 253 }
 254
 255 static void
 256 netdev_vport_run(void)
 257 {
 258     route_table_run();
 259 }
 260
 261 static void
 262 netdev_vport_wait(void)
 263 {
 264     route_table_wait();
 265 }
 266 \f
 267 /* Helper functions. */
 268
 269 static void
 270 netdev_vport_poll_notify(struct netdev_dev_vport *ndv)
 271 {
 272     ndv->change_seq++;
 273     if (!ndv->change_seq) {
 274         ndv->change_seq++;
 275     }
 276 }
 277 \f
 278 /* Code specific to tunnel types. */
 279
 280 static ovs_be64
 281 parse_key(const struct smap *args, const char *name,
 282           bool *present, bool *flow)
 283 {
 284     const char *s;
 285
 286     *present = false;
 287     *flow = false;
 288
 289     s = smap_get(args, name);
 290     if (!s) {
 291         s = smap_get(args, "key");
 292         if (!s) {
 293             return 0;
 294         }
 295     }
 296
 297     *present = true;
 298
 299     if (!strcmp(s, "flow")) {
 300         *flow = true;
 301         return 0;
 302     } else {
 303         return htonll(strtoull(s, NULL, 0));
 304     }
 305 }
 306
 307 static int
 308 set_tunnel_config(struct netdev_dev *dev_, const struct smap *args)
 309 {
 310     struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
 311     const char *name = netdev_dev_get_name(dev_);
 312     const char *type = netdev_dev_get_type(dev_);
 313     bool ipsec_mech_set, needs_dst_port, has_csum;
 314     struct netdev_tunnel_config tnl_cfg;
 315     struct smap_node *node;
 316
 317     has_csum = strstr(type, "gre");
 318     ipsec_mech_set = false;
 319     memset(&tnl_cfg, 0, sizeof tnl_cfg);
 320
 321     needs_dst_port = netdev_vport_needs_dst_port(dev_);
 322     tnl_cfg.ipsec = strstr(type, "ipsec");
 323     tnl_cfg.dont_fragment = true;
 324
 325     SMAP_FOR_EACH (node, args) {
 326         if (!strcmp(node->key, "remote_ip")) {
 327             struct in_addr in_addr;
 328             if (!strcmp(node->value, "flow")) {
 329                 tnl_cfg.ip_dst_flow = true;
 330                 tnl_cfg.ip_dst = htonl(0);
 331             } else if (lookup_ip(node->value, &in_addr)) {
 332                 VLOG_WARN("%s: bad %s 'remote_ip'", name, type);
 333             } else if (ip_is_multicast(in_addr.s_addr)) {
 334                 VLOG_WARN("%s: multicast remote_ip="IP_FMT" not allowed",
 335                           name, IP_ARGS(in_addr.s_addr));
 336                 return EINVAL;
 337             } else {
 338                 tnl_cfg.ip_dst = in_addr.s_addr;
 339             }
 340         } else if (!strcmp(node->key, "local_ip")) {
 341             struct in_addr in_addr;
 342             if (!strcmp(node->value, "flow")) {
 343                 tnl_cfg.ip_src_flow = true;
 344                 tnl_cfg.ip_src = htonl(0);
 345             } else if (lookup_ip(node->value, &in_addr)) {
 346                 VLOG_WARN("%s: bad %s 'local_ip'", name, type);
 347             } else {
 348                 tnl_cfg.ip_src = in_addr.s_addr;
 349             }
 350         } else if (!strcmp(node->key, "tos")) {
 351             if (!strcmp(node->value, "inherit")) {
 352                 tnl_cfg.tos_inherit = true;
 353             } else {
 354                 char *endptr;
 355                 int tos;
 356                 tos = strtol(node->value, &endptr, 0);
 357                 if (*endptr == '\0' && tos == (tos & IP_DSCP_MASK)) {
 358                     tnl_cfg.tos = tos;
 359                 } else {
 360                     VLOG_WARN("%s: invalid TOS %s", name, node->value);
 361                 }
 362             }
 363         } else if (!strcmp(node->key, "ttl")) {
 364             if (!strcmp(node->value, "inherit")) {
 365                 tnl_cfg.ttl_inherit = true;
 366             } else {
 367                 tnl_cfg.ttl = atoi(node->value);
 368             }
 369         } else if (!strcmp(node->key, "dst_port") && needs_dst_port) {
 370             tnl_cfg.dst_port = htons(atoi(node->value));
 371         } else if (!strcmp(node->key, "csum") && has_csum) {
 372             if (!strcmp(node->value, "true")) {
 373                 tnl_cfg.csum = true;
 374             }
 375         } else if (!strcmp(node->key, "df_default")) {
 376             if (!strcmp(node->value, "false")) {
 377                 tnl_cfg.dont_fragment = false;
 378             }
 379         } else if (!strcmp(node->key, "peer_cert") && tnl_cfg.ipsec) {
 380             if (smap_get(args, "certificate")) {
 381                 ipsec_mech_set = true;
 382             } else {
 383                 const char *use_ssl_cert;
 384
 385                 /* If the "use_ssl_cert" is true, then "certificate" and
 386                  * "private_key" will be pulled from the SSL table.  The
 387                  * use of this option is strongly discouraged, since it
 388                  * will like be removed when multiple SSL configurations
 389                  * are supported by OVS.
 390                  */
 391                 use_ssl_cert = smap_get(args, "use_ssl_cert");
 392                 if (!use_ssl_cert || strcmp(use_ssl_cert, "true")) {
 393                     VLOG_ERR("%s: 'peer_cert' requires 'certificate' argument",
 394                              name);
 395                     return EINVAL;
 396                 }
 397                 ipsec_mech_set = true;
 398             }
 399         } else if (!strcmp(node->key, "psk") && tnl_cfg.ipsec) {
 400             ipsec_mech_set = true;
 401         } else if (tnl_cfg.ipsec
 402                 && (!strcmp(node->key, "certificate")
 403                     || !strcmp(node->key, "private_key")
 404                     || !strcmp(node->key, "use_ssl_cert"))) {
 405             /* Ignore options not used by the netdev. */
 406         } else if (!strcmp(node->key, "key") ||
 407                    !strcmp(node->key, "in_key") ||
 408                    !strcmp(node->key, "out_key")) {
 409             /* Handled separately below. */
 410         } else {
 411             VLOG_WARN("%s: unknown %s argument '%s'", name, type, node->key);
 412         }
 413     }
 414
 415     /* Add a default destination port for VXLAN if none specified. */
 416     if (!strcmp(type, "vxlan") && !tnl_cfg.dst_port) {
 417         tnl_cfg.dst_port = htons(VXLAN_DST_PORT);
 418     }
 419
 420     /* Add a default destination port for LISP if none specified. */
 421     if (!strcmp(type, "lisp") && !tnl_cfg.dst_port) {
 422         tnl_cfg.dst_port = htons(LISP_DST_PORT);
 423     }
 424
 425     if (tnl_cfg.ipsec) {
 426         static pid_t pid = 0;
 427         if (pid <= 0) {
 428             char *file_name = xasprintf("%s/%s", ovs_rundir(),
 429                                         "ovs-monitor-ipsec.pid");
 430             pid = read_pidfile(file_name);
 431             free(file_name);
 432         }
 433
 434         if (pid < 0) {
 435             VLOG_ERR("%s: IPsec requires the ovs-monitor-ipsec daemon",
 436                      name);
 437             return EINVAL;
 438         }
 439
 440         if (smap_get(args, "peer_cert") && smap_get(args, "psk")) {
 441             VLOG_ERR("%s: cannot define both 'peer_cert' and 'psk'", name);
 442             return EINVAL;
 443         }
 444
 445         if (!ipsec_mech_set) {
 446             VLOG_ERR("%s: IPsec requires an 'peer_cert' or psk' argument",
 447                      name);
 448             return EINVAL;
 449         }
 450     }
 451
 452     if (!tnl_cfg.ip_dst && !tnl_cfg.ip_dst_flow) {
 453         VLOG_ERR("%s: %s type requires valid 'remote_ip' argument",
 454                  name, type);
 455         return EINVAL;
 456     }
 457     if (tnl_cfg.ip_src_flow && !tnl_cfg.ip_dst_flow) {
 458         VLOG_ERR("%s: %s type requires 'remote_ip=flow' with 'local_ip=flow'",
 459                  name, type);
 460         return EINVAL;
 461     }
 462     if (!tnl_cfg.ttl) {
 463         tnl_cfg.ttl = DEFAULT_TTL;
 464     }
 465
 466     tnl_cfg.in_key = parse_key(args, "in_key",
 467                                &tnl_cfg.in_key_present,
 468                                &tnl_cfg.in_key_flow);
 469
 470     tnl_cfg.out_key = parse_key(args, "out_key",
 471                                &tnl_cfg.out_key_present,
 472                                &tnl_cfg.out_key_flow);
 473
 474     dev->tnl_cfg = tnl_cfg;
 475     netdev_vport_poll_notify(dev);
 476
 477     return 0;
 478 }
 479
 480 static int
 481 get_tunnel_config(struct netdev_dev *dev, struct smap *args)
 482 {
 483     const struct netdev_tunnel_config *tnl_cfg =
 484         &netdev_dev_vport_cast(dev)->tnl_cfg;
 485
 486     if (tnl_cfg->ip_dst) {
 487         smap_add_format(args, "remote_ip", IP_FMT, IP_ARGS(tnl_cfg->ip_dst));
 488     } else if (tnl_cfg->ip_dst_flow) {
 489         smap_add(args, "remote_ip", "flow");
 490     }
 491
 492     if (tnl_cfg->ip_src) {
 493         smap_add_format(args, "local_ip", IP_FMT, IP_ARGS(tnl_cfg->ip_src));
 494     } else if (tnl_cfg->ip_src_flow) {
 495         smap_add(args, "local_ip", "flow");
 496     }
 497
 498     if (tnl_cfg->in_key_flow && tnl_cfg->out_key_flow) {
 499         smap_add(args, "key", "flow");
 500     } else if (tnl_cfg->in_key_present && tnl_cfg->out_key_present
 501                && tnl_cfg->in_key == tnl_cfg->out_key) {
 502         smap_add_format(args, "key", "%"PRIu64, ntohll(tnl_cfg->in_key));
 503     } else {
 504         if (tnl_cfg->in_key_flow) {
 505             smap_add(args, "in_key", "flow");
 506         } else if (tnl_cfg->in_key_present) {
 507             smap_add_format(args, "in_key", "%"PRIu64,
 508                             ntohll(tnl_cfg->in_key));
 509         }
 510
 511         if (tnl_cfg->out_key_flow) {
 512             smap_add(args, "out_key", "flow");
 513         } else if (tnl_cfg->out_key_present) {
 514             smap_add_format(args, "out_key", "%"PRIu64,
 515                             ntohll(tnl_cfg->out_key));
 516         }
 517     }
 518
 519     if (tnl_cfg->ttl_inherit) {
 520         smap_add(args, "ttl", "inherit");
 521     } else if (tnl_cfg->ttl != DEFAULT_TTL) {
 522         smap_add_format(args, "ttl", "%"PRIu8, tnl_cfg->ttl);
 523     }
 524
 525     if (tnl_cfg->tos_inherit) {
 526         smap_add(args, "tos", "inherit");
 527     } else if (tnl_cfg->tos) {
 528         smap_add_format(args, "tos", "0x%x", tnl_cfg->tos);
 529     }
 530
 531     if (tnl_cfg->dst_port) {
 532         uint16_t dst_port = ntohs(tnl_cfg->dst_port);
 533         const char *type = netdev_dev_get_type(dev);
 534
 535         if ((!strcmp("vxlan", type) && dst_port != VXLAN_DST_PORT) ||
 536             (!strcmp("lisp", type) && dst_port != LISP_DST_PORT)) {
 537             smap_add_format(args, "dst_port", "%d", dst_port);
 538         }
 539     }
 540
 541     if (tnl_cfg->csum) {
 542         smap_add(args, "csum", "true");
 543     }
 544
 545     if (!tnl_cfg->dont_fragment) {
 546         smap_add(args, "df_default", "false");
 547     }
 548
 549     return 0;
 550 }
 551 \f
 552 /* Code specific to patch ports. */
 553
 554 const char *
 555 netdev_vport_patch_peer(const struct netdev *netdev)
 556 {
 557     return netdev_vport_is_patch(netdev)
 558         ? netdev_vport_get_dev(netdev)->peer
 559         : NULL;
 560 }
 561
 562 void
 563 netdev_vport_inc_rx(const struct netdev *netdev,
 564                           const struct dpif_flow_stats *stats)
 565 {
 566     if (is_vport_class(netdev_dev_get_class(netdev_get_dev(netdev)))) {
 567         struct netdev_dev_vport *dev = netdev_vport_get_dev(netdev);
 568         dev->stats.rx_packets += stats->n_packets;
 569         dev->stats.rx_bytes += stats->n_bytes;
 570     }
 571 }
 572
 573 void
 574 netdev_vport_inc_tx(const struct netdev *netdev,
 575                     const struct dpif_flow_stats *stats)
 576 {
 577     if (is_vport_class(netdev_dev_get_class(netdev_get_dev(netdev)))) {
 578         struct netdev_dev_vport *dev = netdev_vport_get_dev(netdev);
 579         dev->stats.tx_packets += stats->n_packets;
 580         dev->stats.tx_bytes += stats->n_bytes;
 581     }
 582 }
 583
 584 static int
 585 get_patch_config(struct netdev_dev *dev_, struct smap *args)
 586 {
 587     struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
 588
 589     if (dev->peer) {
 590         smap_add(args, "peer", dev->peer);
 591     }
 592     return 0;
 593 }
 594
 595 static int
 596 set_patch_config(struct netdev_dev *dev_, const struct smap *args)
 597 {
 598     struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
 599     const char *name = netdev_dev_get_name(dev_);
 600     const char *peer;
 601
 602     peer = smap_get(args, "peer");
 603     if (!peer) {
 604         VLOG_ERR("%s: patch type requires valid 'peer' argument", name);
 605         return EINVAL;
 606     }
 607
 608     if (smap_count(args) > 1) {
 609         VLOG_ERR("%s: patch type takes only a 'peer' argument", name);
 610         return EINVAL;
 611     }
 612
 613     if (!strcmp(name, peer)) {
 614         VLOG_ERR("%s: patch peer must not be self", name);
 615         return EINVAL;
 616     }
 617
 618     free(dev->peer);
 619     dev->peer = xstrdup(peer);
 620
 621     return 0;
 622 }
 623
 624 static int
 625 get_stats(const struct netdev *netdev, struct netdev_stats *stats)
 626 {
 627     struct netdev_dev_vport *dev = netdev_vport_get_dev(netdev);
 628     memcpy(stats, &dev->stats, sizeof *stats);
 629     return 0;
 630 }
 631 \f
 632 #define VPORT_FUNCTIONS(GET_CONFIG, SET_CONFIG,             \
 633                         GET_TUNNEL_CONFIG, GET_STATUS)      \
 634     NULL,                                                   \
 635     netdev_vport_run,                                       \
 636     netdev_vport_wait,                                      \
 637                                                             \
 638     netdev_vport_create,                                    \
 639     netdev_vport_destroy,                                   \
 640     GET_CONFIG,                                             \
 641     SET_CONFIG,                                             \
 642     GET_TUNNEL_CONFIG,                                      \
 643                                                             \
 644     netdev_vport_open,                                      \
 645     netdev_vport_close,                                     \
 646                                                             \
 647     NULL,                       /* listen */                \
 648     NULL,                       /* recv */                  \
 649     NULL,                       /* recv_wait */             \
 650     NULL,                       /* drain */                 \
 651                                                             \
 652     NULL,                       /* send */                  \
 653     NULL,                       /* send_wait */             \
 654                                                             \
 655     netdev_vport_set_etheraddr,                             \
 656     netdev_vport_get_etheraddr,                             \
 657     NULL,                       /* get_mtu */               \
 658     NULL,                       /* set_mtu */               \
 659     NULL,                       /* get_ifindex */           \
 660     NULL,                       /* get_carrier */           \
 661     NULL,                       /* get_carrier_resets */    \
 662     NULL,                       /* get_miimon */            \
 663     get_stats,                                              \
 664     NULL,                       /* set_stats */             \
 665                                                             \
 666     NULL,                       /* get_features */          \
 667     NULL,                       /* set_advertisements */    \
 668                                                             \
 669     NULL,                       /* set_policing */          \
 670     NULL,                       /* get_qos_types */         \
 671     NULL,                       /* get_qos_capabilities */  \
 672     NULL,                       /* get_qos */               \
 673     NULL,                       /* set_qos */               \
 674     NULL,                       /* get_queue */             \
 675     NULL,                       /* set_queue */             \
 676     NULL,                       /* delete_queue */          \
 677     NULL,                       /* get_queue_stats */       \
 678     NULL,                       /* dump_queues */           \
 679     NULL,                       /* dump_queue_stats */      \
 680                                                             \
 681     NULL,                       /* get_in4 */               \
 682     NULL,                       /* set_in4 */               \
 683     NULL,                       /* get_in6 */               \
 684     NULL,                       /* add_router */            \
 685     NULL,                       /* get_next_hop */          \
 686     GET_STATUS,                                             \
 687     NULL,                       /* arp_lookup */            \
 688                                                             \
 689     netdev_vport_update_flags,                              \
 690                                                             \
 691     netdev_vport_change_seq
 692
 693 #define TUNNEL_CLASS(NAME, DPIF_PORT)                       \
 694     { DPIF_PORT,                                            \
 695         { NAME, VPORT_FUNCTIONS(get_tunnel_config,          \
 696                                 set_tunnel_config,          \
 697                                 get_netdev_tunnel_config,   \
 698                                 tunnel_get_status) }}
 699
 700 void
 701 netdev_vport_tunnel_register(void)
 702 {
 703     static const struct vport_class vport_classes[] = {
 704         TUNNEL_CLASS("gre", "gre_system"),
 705         TUNNEL_CLASS("ipsec_gre", "gre_system"),
 706         TUNNEL_CLASS("gre64", "gre64_system"),
 707         TUNNEL_CLASS("ipsec_gre64", "gre64_system"),
 708         TUNNEL_CLASS("vxlan", "vxlan_system"),
 709         TUNNEL_CLASS("lisp", "lisp_system")
 710     };
 711
 712     int i;
 713
 714     for (i = 0; i < ARRAY_SIZE(vport_classes); i++) {
 715         netdev_register_provider(&vport_classes[i].netdev_class);
 716     }
 717 }
 718
 719 void
 720 netdev_vport_patch_register(void)
 721 {
 722     static const struct vport_class patch_class =
 723         { NULL,
 724             { "patch", VPORT_FUNCTIONS(get_patch_config,
 725                                        set_patch_config,
 726                                        NULL,
 727                                        NULL) }};
 728     netdev_register_provider(&patch_class.netdev_class);
 729 }