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.
23 #include "connectivity.h"
26 #include "netdev-provider.h"
27 #include "netdev-vport.h"
29 #include "ofp-print.h"
32 #include "pcap-file.h"
33 #include "poll-loop.h"
38 #include "unaligned.h"
43 VLOG_DEFINE_THIS_MODULE(netdev_dummy);
46 struct stream *stream;
51 /* Protects 'dummy_list'. */
52 static struct ovs_mutex dummy_list_mutex = OVS_MUTEX_INITIALIZER;
54 /* Contains all 'struct dummy_dev's. */
55 static struct list dummy_list OVS_GUARDED_BY(dummy_list_mutex)
56 = LIST_INITIALIZER(&dummy_list);
62 struct list list_node OVS_GUARDED_BY(dummy_list_mutex);
64 /* Protects all members below. */
65 struct ovs_mutex mutex OVS_ACQ_AFTER(dummy_list_mutex);
67 uint8_t hwaddr[ETH_ADDR_LEN] OVS_GUARDED;
69 struct netdev_stats stats OVS_GUARDED;
70 enum netdev_flags flags OVS_GUARDED;
71 int ifindex OVS_GUARDED;
73 struct pstream *pstream OVS_GUARDED;
74 struct dummy_stream *streams OVS_GUARDED;
75 size_t n_streams OVS_GUARDED;
77 FILE *tx_pcap, *rx_pcap OVS_GUARDED;
79 struct list rxes OVS_GUARDED; /* List of child "netdev_rx_dummy"s. */
82 /* Max 'recv_queue_len' in struct netdev_dummy. */
83 #define NETDEV_DUMMY_MAX_QUEUE 100
85 struct netdev_rx_dummy {
87 struct list node; /* In netdev_dummy's "rxes" list. */
88 struct list recv_queue;
89 int recv_queue_len; /* list_size(&recv_queue). */
92 static unixctl_cb_func netdev_dummy_set_admin_state;
93 static int netdev_dummy_construct(struct netdev *);
94 static void netdev_dummy_queue_packet(struct netdev_dummy *, struct ofpbuf *);
96 static void dummy_stream_close(struct dummy_stream *);
99 is_dummy_class(const struct netdev_class *class)
101 return class->construct == netdev_dummy_construct;
104 static struct netdev_dummy *
105 netdev_dummy_cast(const struct netdev *netdev)
107 ovs_assert(is_dummy_class(netdev_get_class(netdev)));
108 return CONTAINER_OF(netdev, struct netdev_dummy, up);
111 static struct netdev_rx_dummy *
112 netdev_rx_dummy_cast(const struct netdev_rx *rx)
114 ovs_assert(is_dummy_class(netdev_get_class(rx->netdev)));
115 return CONTAINER_OF(rx, struct netdev_rx_dummy, up);
119 netdev_dummy_run(void)
121 struct netdev_dummy *dev;
123 ovs_mutex_lock(&dummy_list_mutex);
124 LIST_FOR_EACH (dev, list_node, &dummy_list) {
127 ovs_mutex_lock(&dev->mutex);
130 struct stream *new_stream;
133 error = pstream_accept(dev->pstream, &new_stream);
135 struct dummy_stream *s;
137 dev->streams = xrealloc(dev->streams,
138 ((dev->n_streams + 1)
139 * sizeof *dev->streams));
140 s = &dev->streams[dev->n_streams++];
141 s->stream = new_stream;
142 ofpbuf_init(&s->rxbuf, 2048);
144 } else if (error != EAGAIN) {
145 VLOG_WARN("%s: accept failed (%s)",
146 pstream_get_name(dev->pstream), ovs_strerror(error));
147 pstream_close(dev->pstream);
152 for (i = 0; i < dev->n_streams; i++) {
153 struct dummy_stream *s = &dev->streams[i];
157 stream_run(s->stream);
159 if (!list_is_empty(&s->txq)) {
160 struct ofpbuf *txbuf;
163 txbuf = ofpbuf_from_list(list_front(&s->txq));
164 retval = stream_send(s->stream, txbuf->data, txbuf->size);
166 ofpbuf_pull(txbuf, retval);
168 list_remove(&txbuf->list_node);
169 ofpbuf_delete(txbuf);
171 } else if (retval != -EAGAIN) {
177 if (s->rxbuf.size < 2) {
178 n = 2 - s->rxbuf.size;
182 frame_len = ntohs(get_unaligned_be16(s->rxbuf.data));
183 if (frame_len < ETH_HEADER_LEN) {
187 n = (2 + frame_len) - s->rxbuf.size;
194 ofpbuf_prealloc_tailroom(&s->rxbuf, n);
195 retval = stream_recv(s->stream, ofpbuf_tail(&s->rxbuf), n);
197 s->rxbuf.size += retval;
198 if (retval == n && s->rxbuf.size > 2) {
199 ofpbuf_pull(&s->rxbuf, 2);
200 netdev_dummy_queue_packet(dev,
201 ofpbuf_clone(&s->rxbuf));
202 ofpbuf_clear(&s->rxbuf);
204 } else if (retval != -EAGAIN) {
205 error = (retval < 0 ? -retval
206 : s->rxbuf.size ? EPROTO
212 VLOG_DBG("%s: closing connection (%s)",
213 stream_get_name(s->stream),
214 ovs_retval_to_string(error));
215 dummy_stream_close(&dev->streams[i]);
216 dev->streams[i] = dev->streams[--dev->n_streams];
220 ovs_mutex_unlock(&dev->mutex);
222 ovs_mutex_unlock(&dummy_list_mutex);
226 dummy_stream_close(struct dummy_stream *s)
228 stream_close(s->stream);
229 ofpbuf_uninit(&s->rxbuf);
230 ofpbuf_list_delete(&s->txq);
234 netdev_dummy_wait(void)
236 struct netdev_dummy *dev;
238 ovs_mutex_lock(&dummy_list_mutex);
239 LIST_FOR_EACH (dev, list_node, &dummy_list) {
242 ovs_mutex_lock(&dev->mutex);
244 pstream_wait(dev->pstream);
246 for (i = 0; i < dev->n_streams; i++) {
247 struct dummy_stream *s = &dev->streams[i];
249 stream_run_wait(s->stream);
250 if (!list_is_empty(&s->txq)) {
251 stream_send_wait(s->stream);
253 stream_recv_wait(s->stream);
255 ovs_mutex_unlock(&dev->mutex);
257 ovs_mutex_unlock(&dummy_list_mutex);
260 static struct netdev *
261 netdev_dummy_alloc(void)
263 struct netdev_dummy *netdev = xzalloc(sizeof *netdev);
268 netdev_dummy_construct(struct netdev *netdev_)
270 static atomic_uint next_n = ATOMIC_VAR_INIT(0xaa550000);
271 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
274 atomic_add(&next_n, 1, &n);
276 ovs_mutex_init(&netdev->mutex);
277 ovs_mutex_lock(&netdev->mutex);
278 netdev->hwaddr[0] = 0xaa;
279 netdev->hwaddr[1] = 0x55;
280 netdev->hwaddr[2] = n >> 24;
281 netdev->hwaddr[3] = n >> 16;
282 netdev->hwaddr[4] = n >> 8;
283 netdev->hwaddr[5] = n;
286 netdev->ifindex = -EOPNOTSUPP;
288 netdev->pstream = NULL;
289 netdev->streams = NULL;
290 netdev->n_streams = 0;
292 list_init(&netdev->rxes);
293 ovs_mutex_unlock(&netdev->mutex);
295 ovs_mutex_lock(&dummy_list_mutex);
296 list_push_back(&dummy_list, &netdev->list_node);
297 ovs_mutex_unlock(&dummy_list_mutex);
303 netdev_dummy_destruct(struct netdev *netdev_)
305 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
308 ovs_mutex_lock(&dummy_list_mutex);
309 list_remove(&netdev->list_node);
310 ovs_mutex_unlock(&dummy_list_mutex);
312 ovs_mutex_lock(&netdev->mutex);
313 pstream_close(netdev->pstream);
314 for (i = 0; i < netdev->n_streams; i++) {
315 dummy_stream_close(&netdev->streams[i]);
317 free(netdev->streams);
318 ovs_mutex_unlock(&netdev->mutex);
319 ovs_mutex_destroy(&netdev->mutex);
323 netdev_dummy_dealloc(struct netdev *netdev_)
325 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
331 netdev_dummy_get_config(const struct netdev *netdev_, struct smap *args)
333 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
335 ovs_mutex_lock(&netdev->mutex);
337 if (netdev->ifindex >= 0) {
338 smap_add_format(args, "ifindex", "%d", netdev->ifindex);
341 if (netdev->pstream) {
342 smap_add(args, "pstream", pstream_get_name(netdev->pstream));
345 ovs_mutex_unlock(&netdev->mutex);
350 netdev_dummy_set_config(struct netdev *netdev_, const struct smap *args)
352 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
356 ovs_mutex_lock(&netdev->mutex);
357 netdev->ifindex = smap_get_int(args, "ifindex", -EOPNOTSUPP);
359 pstream = smap_get(args, "pstream");
362 || strcmp(pstream_get_name(netdev->pstream), pstream)) {
363 pstream_close(netdev->pstream);
364 netdev->pstream = NULL;
369 error = pstream_open(pstream, &netdev->pstream, DSCP_DEFAULT);
371 VLOG_WARN("%s: open failed (%s)",
372 pstream, ovs_strerror(error));
377 if (netdev->rx_pcap) {
378 fclose(netdev->rx_pcap);
380 if (netdev->tx_pcap && netdev->tx_pcap != netdev->rx_pcap) {
381 fclose(netdev->tx_pcap);
383 netdev->rx_pcap = netdev->tx_pcap = NULL;
384 pcap = smap_get(args, "pcap");
386 netdev->rx_pcap = netdev->tx_pcap = pcap_open(pcap, "ab");
388 const char *rx_pcap = smap_get(args, "rx_pcap");
389 const char *tx_pcap = smap_get(args, "tx_pcap");
392 netdev->rx_pcap = pcap_open(rx_pcap, "ab");
395 netdev->tx_pcap = pcap_open(tx_pcap, "ab");
399 ovs_mutex_unlock(&netdev->mutex);
404 static struct netdev_rx *
405 netdev_dummy_rx_alloc(void)
407 struct netdev_rx_dummy *rx = xzalloc(sizeof *rx);
412 netdev_dummy_rx_construct(struct netdev_rx *rx_)
414 struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
415 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
417 ovs_mutex_lock(&netdev->mutex);
418 list_push_back(&netdev->rxes, &rx->node);
419 list_init(&rx->recv_queue);
420 rx->recv_queue_len = 0;
421 ovs_mutex_unlock(&netdev->mutex);
427 netdev_dummy_rx_destruct(struct netdev_rx *rx_)
429 struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
430 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
432 ovs_mutex_lock(&netdev->mutex);
433 list_remove(&rx->node);
434 ofpbuf_list_delete(&rx->recv_queue);
435 ovs_mutex_unlock(&netdev->mutex);
439 netdev_dummy_rx_dealloc(struct netdev_rx *rx_)
441 struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
447 netdev_dummy_rx_recv(struct netdev_rx *rx_, void *buffer, size_t size)
449 struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
450 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
451 struct ofpbuf *packet;
454 ovs_mutex_lock(&netdev->mutex);
455 if (!list_is_empty(&rx->recv_queue)) {
456 packet = ofpbuf_from_list(list_pop_front(&rx->recv_queue));
457 rx->recv_queue_len--;
461 ovs_mutex_unlock(&netdev->mutex);
467 if (packet->size <= size) {
468 memcpy(buffer, packet->data, packet->size);
469 retval = packet->size;
471 ovs_mutex_lock(&netdev->mutex);
472 netdev->stats.rx_packets++;
473 netdev->stats.rx_bytes += packet->size;
474 ovs_mutex_unlock(&netdev->mutex);
478 ofpbuf_delete(packet);
484 netdev_dummy_rx_wait(struct netdev_rx *rx_)
486 struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
487 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
489 ovs_mutex_lock(&netdev->mutex);
490 if (!list_is_empty(&rx->recv_queue)) {
491 poll_immediate_wake();
493 ovs_mutex_unlock(&netdev->mutex);
497 netdev_dummy_rx_drain(struct netdev_rx *rx_)
499 struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
500 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
502 ovs_mutex_lock(&netdev->mutex);
503 ofpbuf_list_delete(&rx->recv_queue);
504 rx->recv_queue_len = 0;
505 ovs_mutex_unlock(&netdev->mutex);
511 netdev_dummy_send(struct netdev *netdev, const void *buffer, size_t size)
513 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
516 if (size < ETH_HEADER_LEN) {
519 const struct eth_header *eth = buffer;
522 ovs_mutex_lock(&dev->mutex);
523 max_size = dev->mtu + ETH_HEADER_LEN;
524 ovs_mutex_unlock(&dev->mutex);
526 if (eth->eth_type == htons(ETH_TYPE_VLAN)) {
527 max_size += VLAN_HEADER_LEN;
529 if (size > max_size) {
534 ovs_mutex_lock(&dev->mutex);
535 dev->stats.tx_packets++;
536 dev->stats.tx_bytes += size;
539 struct ofpbuf packet;
541 ofpbuf_use_const(&packet, buffer, size);
542 pcap_write(dev->tx_pcap, &packet);
543 fflush(dev->tx_pcap);
546 for (i = 0; i < dev->n_streams; i++) {
547 struct dummy_stream *s = &dev->streams[i];
549 if (list_size(&s->txq) < NETDEV_DUMMY_MAX_QUEUE) {
552 b = ofpbuf_clone_data_with_headroom(buffer, size, 2);
553 put_unaligned_be16(ofpbuf_push_uninit(b, 2), htons(size));
554 list_push_back(&s->txq, &b->list_node);
557 ovs_mutex_unlock(&dev->mutex);
563 netdev_dummy_set_etheraddr(struct netdev *netdev,
564 const uint8_t mac[ETH_ADDR_LEN])
566 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
568 ovs_mutex_lock(&dev->mutex);
569 if (!eth_addr_equals(dev->hwaddr, mac)) {
570 memcpy(dev->hwaddr, mac, ETH_ADDR_LEN);
571 seq_change(connectivity_seq_get());
573 ovs_mutex_unlock(&dev->mutex);
579 netdev_dummy_get_etheraddr(const struct netdev *netdev,
580 uint8_t mac[ETH_ADDR_LEN])
582 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
584 ovs_mutex_lock(&dev->mutex);
585 memcpy(mac, dev->hwaddr, ETH_ADDR_LEN);
586 ovs_mutex_unlock(&dev->mutex);
592 netdev_dummy_get_mtu(const struct netdev *netdev, int *mtup)
594 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
596 ovs_mutex_lock(&dev->mutex);
598 ovs_mutex_unlock(&dev->mutex);
604 netdev_dummy_set_mtu(const struct netdev *netdev, int mtu)
606 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
608 ovs_mutex_lock(&dev->mutex);
610 ovs_mutex_unlock(&dev->mutex);
616 netdev_dummy_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
618 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
620 ovs_mutex_lock(&dev->mutex);
622 ovs_mutex_unlock(&dev->mutex);
628 netdev_dummy_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
630 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
632 ovs_mutex_lock(&dev->mutex);
634 ovs_mutex_unlock(&dev->mutex);
640 netdev_dummy_get_ifindex(const struct netdev *netdev)
642 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
645 ovs_mutex_lock(&dev->mutex);
646 ifindex = dev->ifindex;
647 ovs_mutex_unlock(&dev->mutex);
653 netdev_dummy_update_flags__(struct netdev_dummy *netdev,
654 enum netdev_flags off, enum netdev_flags on,
655 enum netdev_flags *old_flagsp)
656 OVS_REQUIRES(netdev->mutex)
658 if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) {
662 *old_flagsp = netdev->flags;
664 netdev->flags &= ~off;
665 if (*old_flagsp != netdev->flags) {
666 seq_change(connectivity_seq_get());
673 netdev_dummy_update_flags(struct netdev *netdev_,
674 enum netdev_flags off, enum netdev_flags on,
675 enum netdev_flags *old_flagsp)
677 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
680 ovs_mutex_lock(&netdev->mutex);
681 error = netdev_dummy_update_flags__(netdev, off, on, old_flagsp);
682 ovs_mutex_unlock(&netdev->mutex);
687 /* Helper functions. */
689 static const struct netdev_class dummy_class = {
696 netdev_dummy_construct,
697 netdev_dummy_destruct,
698 netdev_dummy_dealloc,
699 netdev_dummy_get_config,
700 netdev_dummy_set_config,
701 NULL, /* get_tunnel_config */
703 netdev_dummy_send, /* send */
704 NULL, /* send_wait */
706 netdev_dummy_set_etheraddr,
707 netdev_dummy_get_etheraddr,
708 netdev_dummy_get_mtu,
709 netdev_dummy_set_mtu,
710 netdev_dummy_get_ifindex,
711 NULL, /* get_carrier */
712 NULL, /* get_carrier_resets */
713 NULL, /* get_miimon */
714 netdev_dummy_get_stats,
715 netdev_dummy_set_stats,
717 NULL, /* get_features */
718 NULL, /* set_advertisements */
720 NULL, /* set_policing */
721 NULL, /* get_qos_types */
722 NULL, /* get_qos_capabilities */
725 NULL, /* get_queue */
726 NULL, /* set_queue */
727 NULL, /* delete_queue */
728 NULL, /* get_queue_stats */
729 NULL, /* queue_dump_start */
730 NULL, /* queue_dump_next */
731 NULL, /* queue_dump_done */
732 NULL, /* dump_queue_stats */
737 NULL, /* add_router */
738 NULL, /* get_next_hop */
739 NULL, /* get_status */
740 NULL, /* arp_lookup */
742 netdev_dummy_update_flags,
744 netdev_dummy_rx_alloc,
745 netdev_dummy_rx_construct,
746 netdev_dummy_rx_destruct,
747 netdev_dummy_rx_dealloc,
748 netdev_dummy_rx_recv,
749 netdev_dummy_rx_wait,
750 netdev_dummy_rx_drain,
753 static struct ofpbuf *
754 eth_from_packet_or_flow(const char *s)
756 enum odp_key_fitness fitness;
757 struct ofpbuf *packet;
758 struct ofpbuf odp_key;
762 if (!eth_from_hex(s, &packet)) {
766 /* Convert string to datapath key.
768 * It would actually be nicer to parse an OpenFlow-like flow key here, but
769 * the code for that currently calls exit() on parse error. We have to
770 * settle for parsing a datapath key for now.
772 ofpbuf_init(&odp_key, 0);
773 error = odp_flow_from_string(s, NULL, &odp_key, NULL);
775 ofpbuf_uninit(&odp_key);
779 /* Convert odp_key to flow. */
780 fitness = odp_flow_key_to_flow(odp_key.data, odp_key.size, &flow);
781 if (fitness == ODP_FIT_ERROR) {
782 ofpbuf_uninit(&odp_key);
786 packet = ofpbuf_new(0);
787 flow_compose(packet, &flow);
789 ofpbuf_uninit(&odp_key);
794 netdev_dummy_queue_packet__(struct netdev_rx_dummy *rx, struct ofpbuf *packet)
796 list_push_back(&rx->recv_queue, &packet->list_node);
797 rx->recv_queue_len++;
801 netdev_dummy_queue_packet(struct netdev_dummy *dummy, struct ofpbuf *packet)
802 OVS_REQUIRES(dummy->mutex)
804 struct netdev_rx_dummy *rx, *prev;
806 if (dummy->rx_pcap) {
807 pcap_write(dummy->rx_pcap, packet);
808 fflush(dummy->rx_pcap);
811 LIST_FOR_EACH (rx, node, &dummy->rxes) {
812 if (rx->recv_queue_len < NETDEV_DUMMY_MAX_QUEUE) {
814 netdev_dummy_queue_packet__(prev, ofpbuf_clone(packet));
820 netdev_dummy_queue_packet__(prev, packet);
822 ofpbuf_delete(packet);
827 netdev_dummy_receive(struct unixctl_conn *conn,
828 int argc, const char *argv[], void *aux OVS_UNUSED)
830 struct netdev_dummy *dummy_dev;
831 struct netdev *netdev;
834 netdev = netdev_from_name(argv[1]);
835 if (!netdev || !is_dummy_class(netdev->netdev_class)) {
836 unixctl_command_reply_error(conn, "no such dummy netdev");
839 dummy_dev = netdev_dummy_cast(netdev);
841 for (i = 2; i < argc; i++) {
842 struct ofpbuf *packet;
844 packet = eth_from_packet_or_flow(argv[i]);
846 unixctl_command_reply_error(conn, "bad packet syntax");
850 ovs_mutex_lock(&dummy_dev->mutex);
851 netdev_dummy_queue_packet(dummy_dev, packet);
852 ovs_mutex_unlock(&dummy_dev->mutex);
855 unixctl_command_reply(conn, NULL);
858 netdev_close(netdev);
862 netdev_dummy_set_admin_state__(struct netdev_dummy *dev, bool admin_state)
863 OVS_REQUIRES(dev->mutex)
865 enum netdev_flags old_flags;
868 netdev_dummy_update_flags__(dev, 0, NETDEV_UP, &old_flags);
870 netdev_dummy_update_flags__(dev, NETDEV_UP, 0, &old_flags);
875 netdev_dummy_set_admin_state(struct unixctl_conn *conn, int argc,
876 const char *argv[], void *aux OVS_UNUSED)
880 if (!strcasecmp(argv[argc - 1], "up")) {
882 } else if ( !strcasecmp(argv[argc - 1], "down")) {
885 unixctl_command_reply_error(conn, "Invalid Admin State");
890 struct netdev *netdev = netdev_from_name(argv[1]);
891 if (netdev && is_dummy_class(netdev->netdev_class)) {
892 struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
894 ovs_mutex_lock(&dummy_dev->mutex);
895 netdev_dummy_set_admin_state__(dummy_dev, up);
896 ovs_mutex_unlock(&dummy_dev->mutex);
898 netdev_close(netdev);
900 unixctl_command_reply_error(conn, "Unknown Dummy Interface");
901 netdev_close(netdev);
905 struct netdev_dummy *netdev;
907 ovs_mutex_lock(&dummy_list_mutex);
908 LIST_FOR_EACH (netdev, list_node, &dummy_list) {
909 ovs_mutex_lock(&netdev->mutex);
910 netdev_dummy_set_admin_state__(netdev, up);
911 ovs_mutex_unlock(&netdev->mutex);
913 ovs_mutex_unlock(&dummy_list_mutex);
915 unixctl_command_reply(conn, "OK");
919 netdev_dummy_register(bool override)
921 unixctl_command_register("netdev-dummy/receive", "NAME PACKET|FLOW...",
922 2, INT_MAX, netdev_dummy_receive, NULL);
923 unixctl_command_register("netdev-dummy/set-admin-state",
924 "[netdev] up|down", 1, 2,
925 netdev_dummy_set_admin_state, NULL);
932 netdev_enumerate_types(&types);
933 SSET_FOR_EACH (type, &types) {
934 if (!strcmp(type, "patch")) {
937 if (!netdev_unregister_provider(type)) {
938 struct netdev_class *class;
941 class = xmemdup(&dummy_class, sizeof dummy_class);
942 class->type = xstrdup(type);
943 error = netdev_register_provider(class);
945 VLOG_ERR("%s: failed to register netdev provider (%s)",
946 type, ovs_strerror(error));
947 free(CONST_CAST(char *, class->type));
952 sset_destroy(&types);
954 netdev_register_provider(&dummy_class);
956 netdev_vport_tunnel_register();