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