2 * Copyright (c) 2010, 2011, 2012, 2013, 2015 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 "dp-packet.h"
24 #include "dpif-netdev.h"
25 #include "dynamic-string.h"
28 #include "netdev-provider.h"
29 #include "netdev-vport.h"
31 #include "ofp-print.h"
33 #include "ovs-atomic.h"
35 #include "pcap-file.h"
36 #include "poll-loop.h"
40 #include "unaligned.h"
43 #include "reconnect.h"
44 #include "openvswitch/vlog.h"
46 VLOG_DEFINE_THIS_MODULE(netdev_dummy);
50 struct dummy_packet_stream {
51 struct stream *stream;
52 struct dp_packet rxbuf;
56 enum dummy_packet_conn_type {
57 NONE, /* No connection is configured. */
58 PASSIVE, /* Listener. */
59 ACTIVE /* Connect to listener. */
62 enum dummy_netdev_conn_state {
63 CONN_STATE_CONNECTED, /* Listener connected. */
64 CONN_STATE_NOT_CONNECTED, /* Listener not connected. */
65 CONN_STATE_UNKNOWN, /* No relavent information. */
68 struct dummy_packet_pconn {
69 struct pstream *pstream;
70 struct dummy_packet_stream *streams;
74 struct dummy_packet_rconn {
75 struct dummy_packet_stream *rstream;
76 struct reconnect *reconnect;
79 struct dummy_packet_conn {
80 enum dummy_packet_conn_type type;
82 struct dummy_packet_pconn pconn;
83 struct dummy_packet_rconn rconn;
87 /* Protects 'dummy_list'. */
88 static struct ovs_mutex dummy_list_mutex = OVS_MUTEX_INITIALIZER;
90 /* Contains all 'struct dummy_dev's. */
91 static struct ovs_list dummy_list OVS_GUARDED_BY(dummy_list_mutex)
92 = OVS_LIST_INITIALIZER(&dummy_list);
98 struct ovs_list list_node OVS_GUARDED_BY(dummy_list_mutex);
100 /* Protects all members below. */
101 struct ovs_mutex mutex OVS_ACQ_AFTER(dummy_list_mutex);
103 uint8_t hwaddr[ETH_ADDR_LEN] OVS_GUARDED;
105 struct netdev_stats stats OVS_GUARDED;
106 enum netdev_flags flags OVS_GUARDED;
107 int ifindex OVS_GUARDED;
109 struct dummy_packet_conn conn OVS_GUARDED;
111 FILE *tx_pcap, *rxq_pcap OVS_GUARDED;
113 struct in_addr address, netmask;
114 struct ovs_list rxes OVS_GUARDED; /* List of child "netdev_rxq_dummy"s. */
117 /* Max 'recv_queue_len' in struct netdev_dummy. */
118 #define NETDEV_DUMMY_MAX_QUEUE 100
120 struct netdev_rxq_dummy {
121 struct netdev_rxq up;
122 struct ovs_list node; /* In netdev_dummy's "rxes" list. */
123 struct ovs_list recv_queue;
124 int recv_queue_len; /* list_size(&recv_queue). */
125 struct seq *seq; /* Reports newly queued packets. */
128 static unixctl_cb_func netdev_dummy_set_admin_state;
129 static int netdev_dummy_construct(struct netdev *);
130 static void netdev_dummy_queue_packet(struct netdev_dummy *, struct dp_packet *);
132 static void dummy_packet_stream_close(struct dummy_packet_stream *);
135 is_dummy_class(const struct netdev_class *class)
137 return class->construct == netdev_dummy_construct;
140 static struct netdev_dummy *
141 netdev_dummy_cast(const struct netdev *netdev)
143 ovs_assert(is_dummy_class(netdev_get_class(netdev)));
144 return CONTAINER_OF(netdev, struct netdev_dummy, up);
147 static struct netdev_rxq_dummy *
148 netdev_rxq_dummy_cast(const struct netdev_rxq *rx)
150 ovs_assert(is_dummy_class(netdev_get_class(rx->netdev)));
151 return CONTAINER_OF(rx, struct netdev_rxq_dummy, up);
155 dummy_packet_stream_init(struct dummy_packet_stream *s, struct stream *stream)
157 int rxbuf_size = stream ? 2048 : 0;
159 dp_packet_init(&s->rxbuf, rxbuf_size);
163 static struct dummy_packet_stream *
164 dummy_packet_stream_create(struct stream *stream)
166 struct dummy_packet_stream *s;
168 s = xzalloc(sizeof *s);
169 dummy_packet_stream_init(s, stream);
175 dummy_packet_stream_wait(struct dummy_packet_stream *s)
177 stream_run_wait(s->stream);
178 if (!list_is_empty(&s->txq)) {
179 stream_send_wait(s->stream);
181 stream_recv_wait(s->stream);
185 dummy_packet_stream_send(struct dummy_packet_stream *s, const void *buffer, size_t size)
187 if (list_size(&s->txq) < NETDEV_DUMMY_MAX_QUEUE) {
190 b = dp_packet_clone_data_with_headroom(buffer, size, 2);
191 put_unaligned_be16(dp_packet_push_uninit(b, 2), htons(size));
192 list_push_back(&s->txq, &b->list_node);
197 dummy_packet_stream_run(struct netdev_dummy *dev, struct dummy_packet_stream *s)
202 stream_run(s->stream);
204 if (!list_is_empty(&s->txq)) {
205 struct dp_packet *txbuf;
208 txbuf = dp_packet_from_list(list_front(&s->txq));
209 retval = stream_send(s->stream, dp_packet_data(txbuf), dp_packet_size(txbuf));
212 dp_packet_pull(txbuf, retval);
213 if (!dp_packet_size(txbuf)) {
214 list_remove(&txbuf->list_node);
215 dp_packet_delete(txbuf);
217 } else if (retval != -EAGAIN) {
223 if (dp_packet_size(&s->rxbuf) < 2) {
224 n = 2 - dp_packet_size(&s->rxbuf);
228 frame_len = ntohs(get_unaligned_be16(dp_packet_data(&s->rxbuf)));
229 if (frame_len < ETH_HEADER_LEN) {
233 n = (2 + frame_len) - dp_packet_size(&s->rxbuf);
240 dp_packet_prealloc_tailroom(&s->rxbuf, n);
241 retval = stream_recv(s->stream, dp_packet_tail(&s->rxbuf), n);
244 dp_packet_set_size(&s->rxbuf, dp_packet_size(&s->rxbuf) + retval);
245 if (retval == n && dp_packet_size(&s->rxbuf) > 2) {
246 dp_packet_pull(&s->rxbuf, 2);
247 netdev_dummy_queue_packet(dev,
248 dp_packet_clone(&s->rxbuf));
249 dp_packet_clear(&s->rxbuf);
251 } else if (retval != -EAGAIN) {
252 error = (retval < 0 ? -retval
253 : dp_packet_size(&s->rxbuf) ? EPROTO
262 dummy_packet_stream_close(struct dummy_packet_stream *s)
264 stream_close(s->stream);
265 dp_packet_uninit(&s->rxbuf);
266 dp_packet_list_delete(&s->txq);
270 dummy_packet_conn_init(struct dummy_packet_conn *conn)
272 memset(conn, 0, sizeof *conn);
277 dummy_packet_conn_get_config(struct dummy_packet_conn *conn, struct smap *args)
280 switch (conn->type) {
282 smap_add(args, "pstream", pstream_get_name(conn->u.pconn.pstream));
286 smap_add(args, "stream", stream_get_name(conn->u.rconn.rstream->stream));
296 dummy_packet_conn_close(struct dummy_packet_conn *conn)
299 struct dummy_packet_pconn *pconn = &conn->u.pconn;
300 struct dummy_packet_rconn *rconn = &conn->u.rconn;
302 switch (conn->type) {
304 pstream_close(pconn->pstream);
305 for (i = 0; i < pconn->n_streams; i++) {
306 dummy_packet_stream_close(&pconn->streams[i]);
308 free(pconn->streams);
309 pconn->pstream = NULL;
310 pconn->streams = NULL;
314 dummy_packet_stream_close(rconn->rstream);
315 free(rconn->rstream);
316 rconn->rstream = NULL;
317 reconnect_destroy(rconn->reconnect);
318 rconn->reconnect = NULL;
327 memset(conn, 0, sizeof *conn);
331 dummy_packet_conn_set_config(struct dummy_packet_conn *conn,
332 const struct smap *args)
334 const char *pstream = smap_get(args, "pstream");
335 const char *stream = smap_get(args, "stream");
337 if (pstream && stream) {
338 VLOG_WARN("Open failed: both %s and %s are configured",
343 switch (conn->type) {
345 if (!strcmp(pstream_get_name(conn->u.pconn.pstream), pstream)) {
348 dummy_packet_conn_close(conn);
351 if (!strcmp(stream_get_name(conn->u.rconn.rstream->stream), stream)) {
354 dummy_packet_conn_close(conn);
364 error = pstream_open(pstream, &conn->u.pconn.pstream, DSCP_DEFAULT);
366 VLOG_WARN("%s: open failed (%s)", pstream, ovs_strerror(error));
368 conn->type = PASSIVE;
374 struct stream *active_stream;
375 struct reconnect *reconnect;;
377 reconnect = reconnect_create(time_msec());
378 reconnect_set_name(reconnect, stream);
379 reconnect_set_passive(reconnect, false, time_msec());
380 reconnect_enable(reconnect, time_msec());
381 reconnect_set_backoff(reconnect, 100, INT_MAX);
382 reconnect_set_probe_interval(reconnect, 0);
383 conn->u.rconn.reconnect = reconnect;
386 error = stream_open(stream, &active_stream, DSCP_DEFAULT);
387 conn->u.rconn.rstream = dummy_packet_stream_create(active_stream);
391 reconnect_connected(reconnect, time_msec());
395 reconnect_connecting(reconnect, time_msec());
399 reconnect_connect_failed(reconnect, time_msec(), error);
400 stream_close(active_stream);
401 conn->u.rconn.rstream->stream = NULL;
408 dummy_pconn_run(struct netdev_dummy *dev)
409 OVS_REQUIRES(dev->mutex)
411 struct stream *new_stream;
412 struct dummy_packet_pconn *pconn = &dev->conn.u.pconn;
416 error = pstream_accept(pconn->pstream, &new_stream);
418 struct dummy_packet_stream *s;
420 pconn->streams = xrealloc(pconn->streams,
421 ((pconn->n_streams + 1)
423 s = &pconn->streams[pconn->n_streams++];
424 dummy_packet_stream_init(s, new_stream);
425 } else if (error != EAGAIN) {
426 VLOG_WARN("%s: accept failed (%s)",
427 pstream_get_name(pconn->pstream), ovs_strerror(error));
428 pstream_close(pconn->pstream);
429 pconn->pstream = NULL;
430 dev->conn.type = NONE;
433 for (i = 0; i < pconn->n_streams; i++) {
434 struct dummy_packet_stream *s = &pconn->streams[i];
436 error = dummy_packet_stream_run(dev, s);
438 VLOG_DBG("%s: closing connection (%s)",
439 stream_get_name(s->stream),
440 ovs_retval_to_string(error));
441 dummy_packet_stream_close(s);
442 pconn->streams[i] = pconn->streams[--pconn->n_streams];
448 dummy_rconn_run(struct netdev_dummy *dev)
449 OVS_REQUIRES(dev->mutex)
451 struct dummy_packet_rconn *rconn = &dev->conn.u.rconn;
453 switch (reconnect_run(rconn->reconnect, time_msec())) {
454 case RECONNECT_CONNECT:
458 if (rconn->rstream->stream) {
459 error = stream_connect(rconn->rstream->stream);
461 error = stream_open(reconnect_get_name(rconn->reconnect),
462 &rconn->rstream->stream, DSCP_DEFAULT);
467 reconnect_connected(rconn->reconnect, time_msec());
471 reconnect_connecting(rconn->reconnect, time_msec());
475 reconnect_connect_failed(rconn->reconnect, time_msec(), error);
476 stream_close(rconn->rstream->stream);
477 rconn->rstream->stream = NULL;
483 case RECONNECT_DISCONNECT:
484 case RECONNECT_PROBE:
489 if (reconnect_is_connected(rconn->reconnect)) {
492 err = dummy_packet_stream_run(dev, rconn->rstream);
495 reconnect_disconnected(rconn->reconnect, time_msec(), err);
496 stream_close(rconn->rstream->stream);
497 rconn->rstream->stream = NULL;
503 dummy_packet_conn_run(struct netdev_dummy *dev)
504 OVS_REQUIRES(dev->mutex)
506 switch (dev->conn.type) {
508 dummy_pconn_run(dev);
512 dummy_rconn_run(dev);
522 dummy_packet_conn_wait(struct dummy_packet_conn *conn)
525 switch (conn->type) {
527 pstream_wait(conn->u.pconn.pstream);
528 for (i = 0; i < conn->u.pconn.n_streams; i++) {
529 struct dummy_packet_stream *s = &conn->u.pconn.streams[i];
530 dummy_packet_stream_wait(s);
534 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
535 dummy_packet_stream_wait(conn->u.rconn.rstream);
546 dummy_packet_conn_send(struct dummy_packet_conn *conn,
547 const void *buffer, size_t size)
551 switch (conn->type) {
553 for (i = 0; i < conn->u.pconn.n_streams; i++) {
554 struct dummy_packet_stream *s = &conn->u.pconn.streams[i];
556 dummy_packet_stream_send(s, buffer, size);
557 pstream_wait(conn->u.pconn.pstream);
562 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
563 dummy_packet_stream_send(conn->u.rconn.rstream, buffer, size);
564 dummy_packet_stream_wait(conn->u.rconn.rstream);
574 static enum dummy_netdev_conn_state
575 dummy_netdev_get_conn_state(struct dummy_packet_conn *conn)
577 enum dummy_netdev_conn_state state;
579 if (conn->type == ACTIVE) {
580 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
581 state = CONN_STATE_CONNECTED;
583 state = CONN_STATE_NOT_CONNECTED;
586 state = CONN_STATE_UNKNOWN;
593 netdev_dummy_run(void)
595 struct netdev_dummy *dev;
597 ovs_mutex_lock(&dummy_list_mutex);
598 LIST_FOR_EACH (dev, list_node, &dummy_list) {
599 ovs_mutex_lock(&dev->mutex);
600 dummy_packet_conn_run(dev);
601 ovs_mutex_unlock(&dev->mutex);
603 ovs_mutex_unlock(&dummy_list_mutex);
607 netdev_dummy_wait(void)
609 struct netdev_dummy *dev;
611 ovs_mutex_lock(&dummy_list_mutex);
612 LIST_FOR_EACH (dev, list_node, &dummy_list) {
613 ovs_mutex_lock(&dev->mutex);
614 dummy_packet_conn_wait(&dev->conn);
615 ovs_mutex_unlock(&dev->mutex);
617 ovs_mutex_unlock(&dummy_list_mutex);
620 static struct netdev *
621 netdev_dummy_alloc(void)
623 struct netdev_dummy *netdev = xzalloc(sizeof *netdev);
628 netdev_dummy_construct(struct netdev *netdev_)
630 static atomic_count next_n = ATOMIC_COUNT_INIT(0xaa550000);
631 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
634 n = atomic_count_inc(&next_n);
636 ovs_mutex_init(&netdev->mutex);
637 ovs_mutex_lock(&netdev->mutex);
638 netdev->hwaddr[0] = 0xaa;
639 netdev->hwaddr[1] = 0x55;
640 netdev->hwaddr[2] = n >> 24;
641 netdev->hwaddr[3] = n >> 16;
642 netdev->hwaddr[4] = n >> 8;
643 netdev->hwaddr[5] = n;
646 netdev->ifindex = -EOPNOTSUPP;
648 dummy_packet_conn_init(&netdev->conn);
650 list_init(&netdev->rxes);
651 ovs_mutex_unlock(&netdev->mutex);
653 ovs_mutex_lock(&dummy_list_mutex);
654 list_push_back(&dummy_list, &netdev->list_node);
655 ovs_mutex_unlock(&dummy_list_mutex);
661 netdev_dummy_destruct(struct netdev *netdev_)
663 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
665 ovs_mutex_lock(&dummy_list_mutex);
666 list_remove(&netdev->list_node);
667 ovs_mutex_unlock(&dummy_list_mutex);
669 ovs_mutex_lock(&netdev->mutex);
670 dummy_packet_conn_close(&netdev->conn);
671 netdev->conn.type = NONE;
673 ovs_mutex_unlock(&netdev->mutex);
674 ovs_mutex_destroy(&netdev->mutex);
678 netdev_dummy_dealloc(struct netdev *netdev_)
680 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
686 netdev_dummy_get_config(const struct netdev *netdev_, struct smap *args)
688 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
690 ovs_mutex_lock(&netdev->mutex);
692 if (netdev->ifindex >= 0) {
693 smap_add_format(args, "ifindex", "%d", netdev->ifindex);
696 dummy_packet_conn_get_config(&netdev->conn, args);
698 ovs_mutex_unlock(&netdev->mutex);
703 netdev_dummy_get_in4(const struct netdev *netdev_,
704 struct in_addr *address, struct in_addr *netmask)
706 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
708 ovs_mutex_lock(&netdev->mutex);
709 *address = netdev->address;
710 *netmask = netdev->netmask;
711 ovs_mutex_unlock(&netdev->mutex);
716 netdev_dummy_set_in4(struct netdev *netdev_, struct in_addr address,
717 struct in_addr netmask)
719 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
721 ovs_mutex_lock(&netdev->mutex);
722 netdev->address = address;
723 netdev->netmask = netmask;
724 ovs_mutex_unlock(&netdev->mutex);
730 netdev_dummy_set_config(struct netdev *netdev_, const struct smap *args)
732 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
735 ovs_mutex_lock(&netdev->mutex);
736 netdev->ifindex = smap_get_int(args, "ifindex", -EOPNOTSUPP);
738 dummy_packet_conn_set_config(&netdev->conn, args);
740 if (netdev->rxq_pcap) {
741 fclose(netdev->rxq_pcap);
743 if (netdev->tx_pcap && netdev->tx_pcap != netdev->rxq_pcap) {
744 fclose(netdev->tx_pcap);
746 netdev->rxq_pcap = netdev->tx_pcap = NULL;
747 pcap = smap_get(args, "pcap");
749 netdev->rxq_pcap = netdev->tx_pcap = ovs_pcap_open(pcap, "ab");
751 const char *rxq_pcap = smap_get(args, "rxq_pcap");
752 const char *tx_pcap = smap_get(args, "tx_pcap");
755 netdev->rxq_pcap = ovs_pcap_open(rxq_pcap, "ab");
758 netdev->tx_pcap = ovs_pcap_open(tx_pcap, "ab");
762 ovs_mutex_unlock(&netdev->mutex);
767 static struct netdev_rxq *
768 netdev_dummy_rxq_alloc(void)
770 struct netdev_rxq_dummy *rx = xzalloc(sizeof *rx);
775 netdev_dummy_rxq_construct(struct netdev_rxq *rxq_)
777 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
778 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
780 ovs_mutex_lock(&netdev->mutex);
781 list_push_back(&netdev->rxes, &rx->node);
782 list_init(&rx->recv_queue);
783 rx->recv_queue_len = 0;
784 rx->seq = seq_create();
785 ovs_mutex_unlock(&netdev->mutex);
791 netdev_dummy_rxq_destruct(struct netdev_rxq *rxq_)
793 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
794 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
796 ovs_mutex_lock(&netdev->mutex);
797 list_remove(&rx->node);
798 dp_packet_list_delete(&rx->recv_queue);
799 ovs_mutex_unlock(&netdev->mutex);
800 seq_destroy(rx->seq);
804 netdev_dummy_rxq_dealloc(struct netdev_rxq *rxq_)
806 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
812 netdev_dummy_rxq_recv(struct netdev_rxq *rxq_, struct dp_packet **arr,
815 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
816 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
817 struct dp_packet *packet;
819 ovs_mutex_lock(&netdev->mutex);
820 if (!list_is_empty(&rx->recv_queue)) {
821 packet = dp_packet_from_list(list_pop_front(&rx->recv_queue));
822 rx->recv_queue_len--;
826 ovs_mutex_unlock(&netdev->mutex);
831 ovs_mutex_lock(&netdev->mutex);
832 netdev->stats.rx_packets++;
833 netdev->stats.rx_bytes += dp_packet_size(packet);
834 ovs_mutex_unlock(&netdev->mutex);
836 dp_packet_pad(packet);
837 dp_packet_set_dp_hash(packet, 0);
845 netdev_dummy_rxq_wait(struct netdev_rxq *rxq_)
847 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
848 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
849 uint64_t seq = seq_read(rx->seq);
851 ovs_mutex_lock(&netdev->mutex);
852 if (!list_is_empty(&rx->recv_queue)) {
853 poll_immediate_wake();
855 seq_wait(rx->seq, seq);
857 ovs_mutex_unlock(&netdev->mutex);
861 netdev_dummy_rxq_drain(struct netdev_rxq *rxq_)
863 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
864 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
866 ovs_mutex_lock(&netdev->mutex);
867 dp_packet_list_delete(&rx->recv_queue);
868 rx->recv_queue_len = 0;
869 ovs_mutex_unlock(&netdev->mutex);
877 netdev_dummy_send(struct netdev *netdev, int qid OVS_UNUSED,
878 struct dp_packet **pkts, int cnt, bool may_steal)
880 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
884 for (i = 0; i < cnt; i++) {
885 const void *buffer = dp_packet_data(pkts[i]);
886 size_t size = dp_packet_size(pkts[i]);
888 if (size < ETH_HEADER_LEN) {
892 const struct eth_header *eth = buffer;
895 ovs_mutex_lock(&dev->mutex);
896 max_size = dev->mtu + ETH_HEADER_LEN;
897 ovs_mutex_unlock(&dev->mutex);
899 if (eth->eth_type == htons(ETH_TYPE_VLAN)) {
900 max_size += VLAN_HEADER_LEN;
902 if (size > max_size) {
908 ovs_mutex_lock(&dev->mutex);
909 dev->stats.tx_packets++;
910 dev->stats.tx_bytes += size;
912 dummy_packet_conn_send(&dev->conn, buffer, size);
915 struct dp_packet packet;
917 dp_packet_use_const(&packet, buffer, size);
918 ovs_pcap_write(dev->tx_pcap, &packet);
919 fflush(dev->tx_pcap);
922 ovs_mutex_unlock(&dev->mutex);
926 for (i = 0; i < cnt; i++) {
927 dp_packet_delete(pkts[i]);
935 netdev_dummy_set_etheraddr(struct netdev *netdev,
936 const uint8_t mac[ETH_ADDR_LEN])
938 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
940 ovs_mutex_lock(&dev->mutex);
941 if (!eth_addr_equals(dev->hwaddr, mac)) {
942 memcpy(dev->hwaddr, mac, ETH_ADDR_LEN);
943 netdev_change_seq_changed(netdev);
945 ovs_mutex_unlock(&dev->mutex);
951 netdev_dummy_get_etheraddr(const struct netdev *netdev,
952 uint8_t mac[ETH_ADDR_LEN])
954 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
956 ovs_mutex_lock(&dev->mutex);
957 memcpy(mac, dev->hwaddr, ETH_ADDR_LEN);
958 ovs_mutex_unlock(&dev->mutex);
964 netdev_dummy_get_mtu(const struct netdev *netdev, int *mtup)
966 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
968 ovs_mutex_lock(&dev->mutex);
970 ovs_mutex_unlock(&dev->mutex);
976 netdev_dummy_set_mtu(const struct netdev *netdev, int mtu)
978 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
980 ovs_mutex_lock(&dev->mutex);
982 ovs_mutex_unlock(&dev->mutex);
988 netdev_dummy_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
990 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
992 ovs_mutex_lock(&dev->mutex);
994 ovs_mutex_unlock(&dev->mutex);
1000 netdev_dummy_get_ifindex(const struct netdev *netdev)
1002 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
1005 ovs_mutex_lock(&dev->mutex);
1006 ifindex = dev->ifindex;
1007 ovs_mutex_unlock(&dev->mutex);
1013 netdev_dummy_update_flags__(struct netdev_dummy *netdev,
1014 enum netdev_flags off, enum netdev_flags on,
1015 enum netdev_flags *old_flagsp)
1016 OVS_REQUIRES(netdev->mutex)
1018 if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) {
1022 *old_flagsp = netdev->flags;
1023 netdev->flags |= on;
1024 netdev->flags &= ~off;
1025 if (*old_flagsp != netdev->flags) {
1026 netdev_change_seq_changed(&netdev->up);
1033 netdev_dummy_update_flags(struct netdev *netdev_,
1034 enum netdev_flags off, enum netdev_flags on,
1035 enum netdev_flags *old_flagsp)
1037 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
1040 ovs_mutex_lock(&netdev->mutex);
1041 error = netdev_dummy_update_flags__(netdev, off, on, old_flagsp);
1042 ovs_mutex_unlock(&netdev->mutex);
1047 /* Helper functions. */
1049 static const struct netdev_class dummy_class = {
1056 netdev_dummy_construct,
1057 netdev_dummy_destruct,
1058 netdev_dummy_dealloc,
1059 netdev_dummy_get_config,
1060 netdev_dummy_set_config,
1061 NULL, /* get_tunnel_config */
1062 NULL, /* build header */
1063 NULL, /* push header */
1064 NULL, /* pop header */
1065 NULL, /* get_numa_id */
1066 NULL, /* set_multiq */
1068 netdev_dummy_send, /* send */
1069 NULL, /* send_wait */
1071 netdev_dummy_set_etheraddr,
1072 netdev_dummy_get_etheraddr,
1073 netdev_dummy_get_mtu,
1074 netdev_dummy_set_mtu,
1075 netdev_dummy_get_ifindex,
1076 NULL, /* get_carrier */
1077 NULL, /* get_carrier_resets */
1078 NULL, /* get_miimon */
1079 netdev_dummy_get_stats,
1081 NULL, /* get_features */
1082 NULL, /* set_advertisements */
1084 NULL, /* set_policing */
1085 NULL, /* get_qos_types */
1086 NULL, /* get_qos_capabilities */
1089 NULL, /* get_queue */
1090 NULL, /* set_queue */
1091 NULL, /* delete_queue */
1092 NULL, /* get_queue_stats */
1093 NULL, /* queue_dump_start */
1094 NULL, /* queue_dump_next */
1095 NULL, /* queue_dump_done */
1096 NULL, /* dump_queue_stats */
1098 netdev_dummy_get_in4, /* get_in4 */
1101 NULL, /* add_router */
1102 NULL, /* get_next_hop */
1103 NULL, /* get_status */
1104 NULL, /* arp_lookup */
1106 netdev_dummy_update_flags,
1108 netdev_dummy_rxq_alloc,
1109 netdev_dummy_rxq_construct,
1110 netdev_dummy_rxq_destruct,
1111 netdev_dummy_rxq_dealloc,
1112 netdev_dummy_rxq_recv,
1113 netdev_dummy_rxq_wait,
1114 netdev_dummy_rxq_drain,
1117 static struct dp_packet *
1118 eth_from_packet_or_flow(const char *s)
1120 enum odp_key_fitness fitness;
1121 struct dp_packet *packet;
1122 struct ofpbuf odp_key;
1126 if (!eth_from_hex(s, &packet)) {
1130 /* Convert string to datapath key.
1132 * It would actually be nicer to parse an OpenFlow-like flow key here, but
1133 * the code for that currently calls exit() on parse error. We have to
1134 * settle for parsing a datapath key for now.
1136 ofpbuf_init(&odp_key, 0);
1137 error = odp_flow_from_string(s, NULL, &odp_key, NULL);
1139 ofpbuf_uninit(&odp_key);
1143 /* Convert odp_key to flow. */
1144 fitness = odp_flow_key_to_flow(odp_key.data, odp_key.size, &flow);
1145 if (fitness == ODP_FIT_ERROR) {
1146 ofpbuf_uninit(&odp_key);
1150 packet = dp_packet_new(0);
1151 flow_compose(packet, &flow);
1153 ofpbuf_uninit(&odp_key);
1158 netdev_dummy_queue_packet__(struct netdev_rxq_dummy *rx, struct dp_packet *packet)
1160 list_push_back(&rx->recv_queue, &packet->list_node);
1161 rx->recv_queue_len++;
1162 seq_change(rx->seq);
1166 netdev_dummy_queue_packet(struct netdev_dummy *dummy, struct dp_packet *packet)
1167 OVS_REQUIRES(dummy->mutex)
1169 struct netdev_rxq_dummy *rx, *prev;
1171 if (dummy->rxq_pcap) {
1172 ovs_pcap_write(dummy->rxq_pcap, packet);
1173 fflush(dummy->rxq_pcap);
1176 LIST_FOR_EACH (rx, node, &dummy->rxes) {
1177 if (rx->recv_queue_len < NETDEV_DUMMY_MAX_QUEUE) {
1179 netdev_dummy_queue_packet__(prev, dp_packet_clone(packet));
1185 netdev_dummy_queue_packet__(prev, packet);
1187 dp_packet_delete(packet);
1192 netdev_dummy_receive(struct unixctl_conn *conn,
1193 int argc, const char *argv[], void *aux OVS_UNUSED)
1195 struct netdev_dummy *dummy_dev;
1196 struct netdev *netdev;
1199 netdev = netdev_from_name(argv[1]);
1200 if (!netdev || !is_dummy_class(netdev->netdev_class)) {
1201 unixctl_command_reply_error(conn, "no such dummy netdev");
1204 dummy_dev = netdev_dummy_cast(netdev);
1206 for (i = 2; i < argc; i++) {
1207 struct dp_packet *packet;
1209 packet = eth_from_packet_or_flow(argv[i]);
1211 unixctl_command_reply_error(conn, "bad packet syntax");
1215 ovs_mutex_lock(&dummy_dev->mutex);
1216 netdev_dummy_queue_packet(dummy_dev, packet);
1217 ovs_mutex_unlock(&dummy_dev->mutex);
1220 unixctl_command_reply(conn, NULL);
1223 netdev_close(netdev);
1227 netdev_dummy_set_admin_state__(struct netdev_dummy *dev, bool admin_state)
1228 OVS_REQUIRES(dev->mutex)
1230 enum netdev_flags old_flags;
1233 netdev_dummy_update_flags__(dev, 0, NETDEV_UP, &old_flags);
1235 netdev_dummy_update_flags__(dev, NETDEV_UP, 0, &old_flags);
1240 netdev_dummy_set_admin_state(struct unixctl_conn *conn, int argc,
1241 const char *argv[], void *aux OVS_UNUSED)
1245 if (!strcasecmp(argv[argc - 1], "up")) {
1247 } else if ( !strcasecmp(argv[argc - 1], "down")) {
1250 unixctl_command_reply_error(conn, "Invalid Admin State");
1255 struct netdev *netdev = netdev_from_name(argv[1]);
1256 if (netdev && is_dummy_class(netdev->netdev_class)) {
1257 struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
1259 ovs_mutex_lock(&dummy_dev->mutex);
1260 netdev_dummy_set_admin_state__(dummy_dev, up);
1261 ovs_mutex_unlock(&dummy_dev->mutex);
1263 netdev_close(netdev);
1265 unixctl_command_reply_error(conn, "Unknown Dummy Interface");
1266 netdev_close(netdev);
1270 struct netdev_dummy *netdev;
1272 ovs_mutex_lock(&dummy_list_mutex);
1273 LIST_FOR_EACH (netdev, list_node, &dummy_list) {
1274 ovs_mutex_lock(&netdev->mutex);
1275 netdev_dummy_set_admin_state__(netdev, up);
1276 ovs_mutex_unlock(&netdev->mutex);
1278 ovs_mutex_unlock(&dummy_list_mutex);
1280 unixctl_command_reply(conn, "OK");
1284 display_conn_state__(struct ds *s, const char *name,
1285 enum dummy_netdev_conn_state state)
1287 ds_put_format(s, "%s: ", name);
1290 case CONN_STATE_CONNECTED:
1291 ds_put_cstr(s, "connected\n");
1294 case CONN_STATE_NOT_CONNECTED:
1295 ds_put_cstr(s, "disconnected\n");
1298 case CONN_STATE_UNKNOWN:
1300 ds_put_cstr(s, "unknown\n");
1306 netdev_dummy_conn_state(struct unixctl_conn *conn, int argc,
1307 const char *argv[], void *aux OVS_UNUSED)
1309 enum dummy_netdev_conn_state state = CONN_STATE_UNKNOWN;
1315 const char *dev_name = argv[1];
1316 struct netdev *netdev = netdev_from_name(dev_name);
1318 if (netdev && is_dummy_class(netdev->netdev_class)) {
1319 struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
1321 ovs_mutex_lock(&dummy_dev->mutex);
1322 state = dummy_netdev_get_conn_state(&dummy_dev->conn);
1323 ovs_mutex_unlock(&dummy_dev->mutex);
1325 netdev_close(netdev);
1327 display_conn_state__(&s, dev_name, state);
1329 struct netdev_dummy *netdev;
1331 ovs_mutex_lock(&dummy_list_mutex);
1332 LIST_FOR_EACH (netdev, list_node, &dummy_list) {
1333 ovs_mutex_lock(&netdev->mutex);
1334 state = dummy_netdev_get_conn_state(&netdev->conn);
1335 ovs_mutex_unlock(&netdev->mutex);
1336 if (state != CONN_STATE_UNKNOWN) {
1337 display_conn_state__(&s, netdev->up.name, state);
1340 ovs_mutex_unlock(&dummy_list_mutex);
1343 unixctl_command_reply(conn, ds_cstr(&s));
1348 netdev_dummy_ip4addr(struct unixctl_conn *conn, int argc OVS_UNUSED,
1349 const char *argv[], void *aux OVS_UNUSED)
1351 struct netdev *netdev = netdev_from_name(argv[1]);
1353 if (netdev && is_dummy_class(netdev->netdev_class)) {
1357 if (ovs_scan(argv[2], IP_SCAN_FMT"/%"SCNi16,
1358 IP_SCAN_ARGS(&ip.s_addr), &plen)) {
1359 struct in_addr mask;
1361 mask.s_addr = be32_prefix_mask(plen);
1362 netdev_dummy_set_in4(netdev, ip, mask);
1363 unixctl_command_reply(conn, "OK");
1365 unixctl_command_reply(conn, "Invalid parameters");
1368 netdev_close(netdev);
1370 unixctl_command_reply_error(conn, "Unknown Dummy Interface");
1371 netdev_close(netdev);
1378 netdev_dummy_register(bool override)
1380 unixctl_command_register("netdev-dummy/receive", "name packet|flow...",
1381 2, INT_MAX, netdev_dummy_receive, NULL);
1382 unixctl_command_register("netdev-dummy/set-admin-state",
1383 "[netdev] up|down", 1, 2,
1384 netdev_dummy_set_admin_state, NULL);
1385 unixctl_command_register("netdev-dummy/conn-state",
1387 netdev_dummy_conn_state, NULL);
1388 unixctl_command_register("netdev-dummy/ip4addr",
1389 "[netdev] ipaddr/mask-prefix-len", 2, 2,
1390 netdev_dummy_ip4addr, NULL);
1398 netdev_enumerate_types(&types);
1399 SSET_FOR_EACH (type, &types) {
1400 if (!strcmp(type, "patch")) {
1403 if (!netdev_unregister_provider(type)) {
1404 struct netdev_class *class;
1407 class = xmemdup(&dummy_class, sizeof dummy_class);
1408 class->type = xstrdup(type);
1409 error = netdev_register_provider(class);
1411 VLOG_ERR("%s: failed to register netdev provider (%s)",
1412 type, ovs_strerror(error));
1413 free(CONST_CAST(char *, class->type));
1418 sset_destroy(&types);
1420 netdev_register_provider(&dummy_class);
1422 netdev_vport_tunnel_register();