2 * Copyright (c) 2010, 2011, 2012, 2013 Nicira, Inc.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #include "netdev-vport.h"
23 #include <sys/socket.h>
25 #include <sys/ioctl.h>
27 #include "byte-order.h"
34 #include "netdev-provider.h"
37 #include "route-table.h"
39 #include "socket-util.h"
42 VLOG_DEFINE_THIS_MODULE(netdev_vport);
44 #define VXLAN_DST_PORT 4789
45 #define LISP_DST_PORT 4341
47 #define DEFAULT_TTL 64
51 unsigned int change_seq;
52 uint8_t etheraddr[ETH_ADDR_LEN];
53 struct netdev_stats stats;
56 struct netdev_tunnel_config tnl_cfg;
63 const char *dpif_port;
64 struct netdev_class netdev_class;
67 static int netdev_vport_create(const struct netdev_class *, const char *,
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 *);
74 is_vport_class(const struct netdev_class *class)
76 return class->create == netdev_vport_create;
79 static const struct vport_class *
80 vport_class_cast(const struct netdev_class *class)
82 ovs_assert(is_vport_class(class));
83 return CONTAINER_OF(class, struct vport_class, netdev_class);
86 static struct netdev_vport *
87 netdev_vport_cast(const struct netdev *netdev)
89 ovs_assert(is_vport_class(netdev_get_class(netdev)));
90 return CONTAINER_OF(netdev, struct netdev_vport, up);
93 static const struct netdev_tunnel_config *
94 get_netdev_tunnel_config(const struct netdev *netdev)
96 return &netdev_vport_cast(netdev)->tnl_cfg;
100 netdev_vport_is_patch(const struct netdev *netdev)
102 const struct netdev_class *class = netdev_get_class(netdev);
104 return class->get_config == get_patch_config;
108 netdev_vport_needs_dst_port(const struct netdev *dev)
110 const struct netdev_class *class = netdev_get_class(dev);
111 const char *type = netdev_get_type(dev);
113 return (class->get_config == get_tunnel_config &&
114 (!strcmp("vxlan", type) || !strcmp("lisp", type)));
118 netdev_vport_class_get_dpif_port(const struct netdev_class *class)
120 return is_vport_class(class) ? vport_class_cast(class)->dpif_port : NULL;
124 netdev_vport_get_dpif_port(const struct netdev *netdev,
125 char namebuf[], size_t bufsize)
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);
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
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));
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);
150 netdev_vport_get_dpif_port_strdup(const struct netdev *netdev)
152 char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
154 return xstrdup(netdev_vport_get_dpif_port(netdev, namebuf,
159 netdev_vport_create(const struct netdev_class *netdev_class, const char *name,
160 struct netdev **netdevp)
162 struct netdev_vport *dev;
164 dev = xzalloc(sizeof *dev);
165 netdev_init(&dev->up, name, netdev_class);
167 eth_addr_random(dev->etheraddr);
170 route_table_register();
176 netdev_vport_destroy(struct netdev *netdev_)
178 struct netdev_vport *netdev = netdev_vport_cast(netdev_);
180 route_table_unregister();
186 netdev_vport_set_etheraddr(struct netdev *netdev_,
187 const uint8_t mac[ETH_ADDR_LEN])
189 struct netdev_vport *netdev = netdev_vport_cast(netdev_);
190 memcpy(netdev->etheraddr, mac, ETH_ADDR_LEN);
191 netdev_vport_poll_notify(netdev);
196 netdev_vport_get_etheraddr(const struct netdev *netdev,
197 uint8_t mac[ETH_ADDR_LEN])
199 memcpy(mac, netdev_vport_cast(netdev)->etheraddr, ETH_ADDR_LEN);
204 tunnel_get_status(const struct netdev *netdev, struct smap *smap)
206 char iface[IFNAMSIZ];
209 route = netdev_vport_cast(netdev)->tnl_cfg.ip_dst;
210 if (route_table_get_name(route, iface)) {
211 struct netdev *egress_netdev;
213 smap_add(smap, "tunnel_egress_iface", iface);
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);
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)
231 if (off & (NETDEV_UP | NETDEV_PROMISC)) {
235 *old_flagsp = NETDEV_UP | NETDEV_PROMISC;
240 netdev_vport_change_seq(const struct netdev *netdev)
242 return netdev_vport_cast(netdev)->change_seq;
246 netdev_vport_run(void)
252 netdev_vport_wait(void)
257 /* Helper functions. */
260 netdev_vport_poll_notify(struct netdev_vport *ndv)
263 if (!ndv->change_seq) {
268 /* Code specific to tunnel types. */
271 parse_key(const struct smap *args, const char *name,
272 bool *present, bool *flow)
279 s = smap_get(args, name);
281 s = smap_get(args, "key");
289 if (!strcmp(s, "flow")) {
293 return htonll(strtoull(s, NULL, 0));
298 set_tunnel_config(struct netdev *dev_, const struct smap *args)
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;
307 has_csum = strstr(type, "gre");
308 ipsec_mech_set = false;
309 memset(&tnl_cfg, 0, sizeof tnl_cfg);
311 needs_dst_port = netdev_vport_needs_dst_port(dev_);
312 tnl_cfg.ipsec = strstr(type, "ipsec");
313 tnl_cfg.dont_fragment = true;
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));
328 tnl_cfg.ip_dst = in_addr.s_addr;
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);
338 tnl_cfg.ip_src = in_addr.s_addr;
340 } else if (!strcmp(node->key, "tos")) {
341 if (!strcmp(node->value, "inherit")) {
342 tnl_cfg.tos_inherit = true;
346 tos = strtol(node->value, &endptr, 0);
347 if (*endptr == '\0' && tos == (tos & IP_DSCP_MASK)) {
350 VLOG_WARN("%s: invalid TOS %s", name, node->value);
353 } else if (!strcmp(node->key, "ttl")) {
354 if (!strcmp(node->value, "inherit")) {
355 tnl_cfg.ttl_inherit = true;
357 tnl_cfg.ttl = atoi(node->value);
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")) {
365 } else if (!strcmp(node->key, "df_default")) {
366 if (!strcmp(node->value, "false")) {
367 tnl_cfg.dont_fragment = false;
369 } else if (!strcmp(node->key, "peer_cert") && tnl_cfg.ipsec) {
370 if (smap_get(args, "certificate")) {
371 ipsec_mech_set = true;
373 const char *use_ssl_cert;
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.
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",
387 ipsec_mech_set = true;
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. */
401 VLOG_WARN("%s: unknown %s argument '%s'", name, type, node->key);
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);
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);
416 static pid_t pid = 0;
418 char *file_name = xasprintf("%s/%s", ovs_rundir(),
419 "ovs-monitor-ipsec.pid");
420 pid = read_pidfile(file_name);
425 VLOG_ERR("%s: IPsec requires the ovs-monitor-ipsec daemon",
430 if (smap_get(args, "peer_cert") && smap_get(args, "psk")) {
431 VLOG_ERR("%s: cannot define both 'peer_cert' and 'psk'", name);
435 if (!ipsec_mech_set) {
436 VLOG_ERR("%s: IPsec requires an 'peer_cert' or psk' argument",
442 if (!tnl_cfg.ip_dst && !tnl_cfg.ip_dst_flow) {
443 VLOG_ERR("%s: %s type requires valid 'remote_ip' argument",
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'",
453 tnl_cfg.ttl = DEFAULT_TTL;
456 tnl_cfg.in_key = parse_key(args, "in_key",
457 &tnl_cfg.in_key_present,
458 &tnl_cfg.in_key_flow);
460 tnl_cfg.out_key = parse_key(args, "out_key",
461 &tnl_cfg.out_key_present,
462 &tnl_cfg.out_key_flow);
464 dev->tnl_cfg = tnl_cfg;
465 netdev_vport_poll_notify(dev);
471 get_tunnel_config(const struct netdev *dev, struct smap *args)
473 const struct netdev_tunnel_config *tnl_cfg =
474 &netdev_vport_cast(dev)->tnl_cfg;
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");
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");
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));
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));
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));
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);
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);
521 if (tnl_cfg->dst_port) {
522 uint16_t dst_port = ntohs(tnl_cfg->dst_port);
523 const char *type = netdev_get_type(dev);
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);
532 smap_add(args, "csum", "true");
535 if (!tnl_cfg->dont_fragment) {
536 smap_add(args, "df_default", "false");
542 /* Code specific to patch ports. */
545 netdev_vport_patch_peer(const struct netdev *netdev)
547 return (netdev_vport_is_patch(netdev)
548 ? netdev_vport_cast(netdev)->peer
553 netdev_vport_inc_rx(const struct netdev *netdev,
554 const struct dpif_flow_stats *stats)
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;
564 netdev_vport_inc_tx(const struct netdev *netdev,
565 const struct dpif_flow_stats *stats)
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;
575 get_patch_config(const struct netdev *dev_, struct smap *args)
577 struct netdev_vport *dev = netdev_vport_cast(dev_);
580 smap_add(args, "peer", dev->peer);
586 set_patch_config(struct netdev *dev_, const struct smap *args)
588 struct netdev_vport *dev = netdev_vport_cast(dev_);
589 const char *name = netdev_get_name(dev_);
592 peer = smap_get(args, "peer");
594 VLOG_ERR("%s: patch type requires valid 'peer' argument", name);
598 if (smap_count(args) > 1) {
599 VLOG_ERR("%s: patch type takes only a 'peer' argument", name);
603 if (!strcmp(name, peer)) {
604 VLOG_ERR("%s: patch peer must not be self", name);
609 dev->peer = xstrdup(peer);
615 get_stats(const struct netdev *netdev, struct netdev_stats *stats)
617 struct netdev_vport *dev = netdev_vport_cast(netdev);
618 memcpy(stats, &dev->stats, sizeof *stats);
622 #define VPORT_FUNCTIONS(GET_CONFIG, SET_CONFIG, \
623 GET_TUNNEL_CONFIG, GET_STATUS) \
628 netdev_vport_create, \
629 netdev_vport_destroy, \
634 NULL, /* rx_open */ \
637 NULL, /* send_wait */ \
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 */ \
648 NULL, /* set_stats */ \
650 NULL, /* get_features */ \
651 NULL, /* set_advertisements */ \
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 */ \
665 NULL, /* get_in4 */ \
666 NULL, /* set_in4 */ \
667 NULL, /* get_in6 */ \
668 NULL, /* add_router */ \
669 NULL, /* get_next_hop */ \
671 NULL, /* arp_lookup */ \
673 netdev_vport_update_flags, \
675 netdev_vport_change_seq
677 #define TUNNEL_CLASS(NAME, DPIF_PORT) \
679 { NAME, VPORT_FUNCTIONS(get_tunnel_config, \
681 get_netdev_tunnel_config, \
682 tunnel_get_status) }}
685 netdev_vport_tunnel_register(void)
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")
701 for (i = 0; i < ARRAY_SIZE(vport_classes); i++) {
702 netdev_register_provider(&vport_classes[i].netdev_class);
708 netdev_vport_patch_register(void)
710 static const struct vport_class patch_class =
712 { "patch", VPORT_FUNCTIONS(get_patch_config,
716 netdev_register_provider(&patch_class.netdev_class);