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 "dpif-netdev.h"
24 #include "dynamic-string.h"
27 #include "netdev-provider.h"
28 #include "netdev-vport.h"
30 #include "ofp-print.h"
33 #include "pcap-file.h"
34 #include "poll-loop.h"
38 #include "unaligned.h"
41 #include "reconnect.h"
44 VLOG_DEFINE_THIS_MODULE(netdev_dummy);
48 struct dummy_packet_stream {
49 struct stream *stream;
54 enum dummy_packet_conn_type {
55 NONE, /* No connection is configured. */
56 PASSIVE, /* Listener. */
57 ACTIVE /* Connect to listener. */
60 enum dummy_netdev_conn_state {
61 CONN_STATE_CONNECTED, /* Listener connected. */
62 CONN_STATE_NOT_CONNECTED, /* Listener not connected. */
63 CONN_STATE_UNKNOWN, /* No relavent information. */
66 struct dummy_packet_pconn {
67 struct pstream *pstream;
68 struct dummy_packet_stream *streams;
72 struct dummy_packet_rconn {
73 struct dummy_packet_stream *rstream;
74 struct reconnect *reconnect;
77 struct dummy_packet_conn {
78 enum dummy_packet_conn_type type;
80 struct dummy_packet_pconn pconn;
81 struct dummy_packet_rconn rconn;
85 /* Protects 'dummy_list'. */
86 static struct ovs_mutex dummy_list_mutex = OVS_MUTEX_INITIALIZER;
88 /* Contains all 'struct dummy_dev's. */
89 static struct list dummy_list OVS_GUARDED_BY(dummy_list_mutex)
90 = LIST_INITIALIZER(&dummy_list);
96 struct list list_node OVS_GUARDED_BY(dummy_list_mutex);
98 /* Protects all members below. */
99 struct ovs_mutex mutex OVS_ACQ_AFTER(dummy_list_mutex);
101 uint8_t hwaddr[ETH_ADDR_LEN] OVS_GUARDED;
103 struct netdev_stats stats OVS_GUARDED;
104 enum netdev_flags flags OVS_GUARDED;
105 int ifindex OVS_GUARDED;
107 struct dummy_packet_conn conn OVS_GUARDED;
109 FILE *tx_pcap, *rxq_pcap OVS_GUARDED;
111 struct list rxes OVS_GUARDED; /* List of child "netdev_rxq_dummy"s. */
114 /* Max 'recv_queue_len' in struct netdev_dummy. */
115 #define NETDEV_DUMMY_MAX_QUEUE 100
117 struct netdev_rxq_dummy {
118 struct netdev_rxq up;
119 struct list node; /* In netdev_dummy's "rxes" list. */
120 struct list recv_queue;
121 int recv_queue_len; /* list_size(&recv_queue). */
122 struct seq *seq; /* Reports newly queued packets. */
125 static unixctl_cb_func netdev_dummy_set_admin_state;
126 static int netdev_dummy_construct(struct netdev *);
127 static void netdev_dummy_queue_packet(struct netdev_dummy *, struct ofpbuf *);
129 static void dummy_packet_stream_close(struct dummy_packet_stream *);
132 is_dummy_class(const struct netdev_class *class)
134 return class->construct == netdev_dummy_construct;
137 static struct netdev_dummy *
138 netdev_dummy_cast(const struct netdev *netdev)
140 ovs_assert(is_dummy_class(netdev_get_class(netdev)));
141 return CONTAINER_OF(netdev, struct netdev_dummy, up);
144 static struct netdev_rxq_dummy *
145 netdev_rxq_dummy_cast(const struct netdev_rxq *rx)
147 ovs_assert(is_dummy_class(netdev_get_class(rx->netdev)));
148 return CONTAINER_OF(rx, struct netdev_rxq_dummy, up);
152 dummy_packet_stream_init(struct dummy_packet_stream *s, struct stream *stream)
154 int rxbuf_size = stream ? 2048 : 0;
156 ofpbuf_init(&s->rxbuf, rxbuf_size);
160 static struct dummy_packet_stream *
161 dummy_packet_stream_create(struct stream *stream)
163 struct dummy_packet_stream *s;
165 s = xzalloc(sizeof *s);
166 dummy_packet_stream_init(s, stream);
172 dummy_packet_stream_wait(struct dummy_packet_stream *s)
174 stream_run_wait(s->stream);
175 if (!list_is_empty(&s->txq)) {
176 stream_send_wait(s->stream);
178 stream_recv_wait(s->stream);
182 dummy_packet_stream_send(struct dummy_packet_stream *s, const void *buffer, size_t size)
184 if (list_size(&s->txq) < NETDEV_DUMMY_MAX_QUEUE) {
187 b = ofpbuf_clone_data_with_headroom(buffer, size, 2);
188 put_unaligned_be16(ofpbuf_push_uninit(b, 2), htons(size));
189 list_push_back(&s->txq, &b->list_node);
194 dummy_packet_stream_run(struct netdev_dummy *dev, struct dummy_packet_stream *s)
199 stream_run(s->stream);
201 if (!list_is_empty(&s->txq)) {
202 struct ofpbuf *txbuf;
205 txbuf = ofpbuf_from_list(list_front(&s->txq));
206 retval = stream_send(s->stream, ofpbuf_data(txbuf), ofpbuf_size(txbuf));
209 ofpbuf_pull(txbuf, retval);
210 if (!ofpbuf_size(txbuf)) {
211 list_remove(&txbuf->list_node);
212 ofpbuf_delete(txbuf);
214 } else if (retval != -EAGAIN) {
220 if (ofpbuf_size(&s->rxbuf) < 2) {
221 n = 2 - ofpbuf_size(&s->rxbuf);
225 frame_len = ntohs(get_unaligned_be16(ofpbuf_data(&s->rxbuf)));
226 if (frame_len < ETH_HEADER_LEN) {
230 n = (2 + frame_len) - ofpbuf_size(&s->rxbuf);
237 ofpbuf_prealloc_tailroom(&s->rxbuf, n);
238 retval = stream_recv(s->stream, ofpbuf_tail(&s->rxbuf), n);
241 ofpbuf_set_size(&s->rxbuf, ofpbuf_size(&s->rxbuf) + retval);
242 if (retval == n && ofpbuf_size(&s->rxbuf) > 2) {
243 ofpbuf_pull(&s->rxbuf, 2);
244 netdev_dummy_queue_packet(dev,
245 ofpbuf_clone(&s->rxbuf));
246 ofpbuf_clear(&s->rxbuf);
248 } else if (retval != -EAGAIN) {
249 error = (retval < 0 ? -retval
250 : ofpbuf_size(&s->rxbuf) ? EPROTO
259 dummy_packet_stream_close(struct dummy_packet_stream *s)
261 stream_close(s->stream);
262 ofpbuf_uninit(&s->rxbuf);
263 ofpbuf_list_delete(&s->txq);
267 dummy_packet_conn_init(struct dummy_packet_conn *conn)
269 memset(conn, 0, sizeof *conn);
274 dummy_packet_conn_get_config(struct dummy_packet_conn *conn, struct smap *args)
277 switch (conn->type) {
279 smap_add(args, "pstream", pstream_get_name(conn->u.pconn.pstream));
283 smap_add(args, "stream", stream_get_name(conn->u.rconn.rstream->stream));
293 dummy_packet_conn_close(struct dummy_packet_conn *conn)
296 struct dummy_packet_pconn *pconn = &conn->u.pconn;
297 struct dummy_packet_rconn *rconn = &conn->u.rconn;
299 switch (conn->type) {
301 pstream_close(pconn->pstream);
302 for (i = 0; i < pconn->n_streams; i++) {
303 dummy_packet_stream_close(&pconn->streams[i]);
305 free(pconn->streams);
306 pconn->pstream = NULL;
307 pconn->streams = NULL;
311 dummy_packet_stream_close(rconn->rstream);
312 free(rconn->rstream);
313 rconn->rstream = NULL;
314 reconnect_destroy(rconn->reconnect);
315 rconn->reconnect = NULL;
324 memset(conn, 0, sizeof *conn);
328 dummy_packet_conn_set_config(struct dummy_packet_conn *conn,
329 const struct smap *args)
331 const char *pstream = smap_get(args, "pstream");
332 const char *stream = smap_get(args, "stream");
334 if (pstream && stream) {
335 VLOG_WARN("Open failed: both %s and %s are configured",
340 switch (conn->type) {
342 if (!strcmp(pstream_get_name(conn->u.pconn.pstream), pstream)) {
345 dummy_packet_conn_close(conn);
348 if (!strcmp(stream_get_name(conn->u.rconn.rstream->stream), stream)) {
351 dummy_packet_conn_close(conn);
361 error = pstream_open(pstream, &conn->u.pconn.pstream, DSCP_DEFAULT);
363 VLOG_WARN("%s: open failed (%s)", pstream, ovs_strerror(error));
365 conn->type = PASSIVE;
371 struct stream *active_stream;
372 struct reconnect *reconnect;;
374 reconnect = reconnect_create(time_msec());
375 reconnect_set_name(reconnect, stream);
376 reconnect_set_passive(reconnect, false, time_msec());
377 reconnect_enable(reconnect, time_msec());
378 reconnect_set_backoff(reconnect, 100, INT_MAX);
379 reconnect_set_probe_interval(reconnect, 0);
380 conn->u.rconn.reconnect = reconnect;
383 error = stream_open(stream, &active_stream, DSCP_DEFAULT);
384 conn->u.rconn.rstream = dummy_packet_stream_create(active_stream);
388 reconnect_connected(reconnect, time_msec());
392 reconnect_connecting(reconnect, time_msec());
396 reconnect_connect_failed(reconnect, time_msec(), error);
397 stream_close(active_stream);
398 conn->u.rconn.rstream->stream = NULL;
405 dummy_pconn_run(struct netdev_dummy *dev)
406 OVS_REQUIRES(dev->mutex)
408 struct stream *new_stream;
409 struct dummy_packet_pconn *pconn = &dev->conn.u.pconn;
413 error = pstream_accept(pconn->pstream, &new_stream);
415 struct dummy_packet_stream *s;
417 pconn->streams = xrealloc(pconn->streams,
418 ((pconn->n_streams + 1)
420 s = &pconn->streams[pconn->n_streams++];
421 dummy_packet_stream_init(s, new_stream);
422 } else if (error != EAGAIN) {
423 VLOG_WARN("%s: accept failed (%s)",
424 pstream_get_name(pconn->pstream), ovs_strerror(error));
425 pstream_close(pconn->pstream);
426 pconn->pstream = NULL;
427 dev->conn.type = NONE;
430 for (i = 0; i < pconn->n_streams; i++) {
431 struct dummy_packet_stream *s = &pconn->streams[i];
433 error = dummy_packet_stream_run(dev, s);
435 VLOG_DBG("%s: closing connection (%s)",
436 stream_get_name(s->stream),
437 ovs_retval_to_string(error));
438 dummy_packet_stream_close(s);
439 pconn->streams[i] = pconn->streams[--pconn->n_streams];
445 dummy_rconn_run(struct netdev_dummy *dev)
446 OVS_REQUIRES(dev->mutex)
448 struct dummy_packet_rconn *rconn = &dev->conn.u.rconn;
450 switch (reconnect_run(rconn->reconnect, time_msec())) {
451 case RECONNECT_CONNECT:
455 if (rconn->rstream->stream) {
456 error = stream_connect(rconn->rstream->stream);
458 error = stream_open(reconnect_get_name(rconn->reconnect),
459 &rconn->rstream->stream, DSCP_DEFAULT);
464 reconnect_connected(rconn->reconnect, time_msec());
468 reconnect_connecting(rconn->reconnect, time_msec());
472 reconnect_connect_failed(rconn->reconnect, time_msec(), error);
473 stream_close(rconn->rstream->stream);
474 rconn->rstream->stream = NULL;
480 case RECONNECT_DISCONNECT:
481 case RECONNECT_PROBE:
486 if (reconnect_is_connected(rconn->reconnect)) {
489 err = dummy_packet_stream_run(dev, rconn->rstream);
492 reconnect_disconnected(rconn->reconnect, time_msec(), err);
493 stream_close(rconn->rstream->stream);
494 rconn->rstream->stream = NULL;
500 dummy_packet_conn_run(struct netdev_dummy *dev)
501 OVS_REQUIRES(dev->mutex)
503 switch (dev->conn.type) {
505 dummy_pconn_run(dev);
509 dummy_rconn_run(dev);
519 dummy_packet_conn_wait(struct dummy_packet_conn *conn)
522 switch (conn->type) {
524 pstream_wait(conn->u.pconn.pstream);
525 for (i = 0; i < conn->u.pconn.n_streams; i++) {
526 struct dummy_packet_stream *s = &conn->u.pconn.streams[i];
527 dummy_packet_stream_wait(s);
531 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
532 dummy_packet_stream_wait(conn->u.rconn.rstream);
543 dummy_packet_conn_send(struct dummy_packet_conn *conn,
544 const void *buffer, size_t size)
548 switch (conn->type) {
550 for (i = 0; i < conn->u.pconn.n_streams; i++) {
551 struct dummy_packet_stream *s = &conn->u.pconn.streams[i];
553 dummy_packet_stream_send(s, buffer, size);
554 pstream_wait(conn->u.pconn.pstream);
559 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
560 dummy_packet_stream_send(conn->u.rconn.rstream, buffer, size);
561 dummy_packet_stream_wait(conn->u.rconn.rstream);
571 static enum dummy_netdev_conn_state
572 dummy_netdev_get_conn_state(struct dummy_packet_conn *conn)
574 enum dummy_netdev_conn_state state;
576 if (conn->type == ACTIVE) {
577 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
578 state = CONN_STATE_CONNECTED;
580 state = CONN_STATE_NOT_CONNECTED;
583 state = CONN_STATE_UNKNOWN;
590 netdev_dummy_run(void)
592 struct netdev_dummy *dev;
594 ovs_mutex_lock(&dummy_list_mutex);
595 LIST_FOR_EACH (dev, list_node, &dummy_list) {
596 ovs_mutex_lock(&dev->mutex);
597 dummy_packet_conn_run(dev);
598 ovs_mutex_unlock(&dev->mutex);
600 ovs_mutex_unlock(&dummy_list_mutex);
604 netdev_dummy_wait(void)
606 struct netdev_dummy *dev;
608 ovs_mutex_lock(&dummy_list_mutex);
609 LIST_FOR_EACH (dev, list_node, &dummy_list) {
610 ovs_mutex_lock(&dev->mutex);
611 dummy_packet_conn_wait(&dev->conn);
612 ovs_mutex_unlock(&dev->mutex);
614 ovs_mutex_unlock(&dummy_list_mutex);
617 static struct netdev *
618 netdev_dummy_alloc(void)
620 struct netdev_dummy *netdev = xzalloc(sizeof *netdev);
625 netdev_dummy_construct(struct netdev *netdev_)
627 static atomic_uint next_n = ATOMIC_VAR_INIT(0xaa550000);
628 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
631 atomic_add(&next_n, 1, &n);
633 ovs_mutex_init(&netdev->mutex);
634 ovs_mutex_lock(&netdev->mutex);
635 netdev->hwaddr[0] = 0xaa;
636 netdev->hwaddr[1] = 0x55;
637 netdev->hwaddr[2] = n >> 24;
638 netdev->hwaddr[3] = n >> 16;
639 netdev->hwaddr[4] = n >> 8;
640 netdev->hwaddr[5] = n;
643 netdev->ifindex = -EOPNOTSUPP;
645 dummy_packet_conn_init(&netdev->conn);
647 list_init(&netdev->rxes);
648 ovs_mutex_unlock(&netdev->mutex);
650 ovs_mutex_lock(&dummy_list_mutex);
651 list_push_back(&dummy_list, &netdev->list_node);
652 ovs_mutex_unlock(&dummy_list_mutex);
658 netdev_dummy_destruct(struct netdev *netdev_)
660 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
662 ovs_mutex_lock(&dummy_list_mutex);
663 list_remove(&netdev->list_node);
664 ovs_mutex_unlock(&dummy_list_mutex);
666 ovs_mutex_lock(&netdev->mutex);
667 dummy_packet_conn_close(&netdev->conn);
668 netdev->conn.type = NONE;
670 ovs_mutex_unlock(&netdev->mutex);
671 ovs_mutex_destroy(&netdev->mutex);
675 netdev_dummy_dealloc(struct netdev *netdev_)
677 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
683 netdev_dummy_get_config(const struct netdev *netdev_, struct smap *args)
685 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
687 ovs_mutex_lock(&netdev->mutex);
689 if (netdev->ifindex >= 0) {
690 smap_add_format(args, "ifindex", "%d", netdev->ifindex);
693 dummy_packet_conn_get_config(&netdev->conn, args);
695 ovs_mutex_unlock(&netdev->mutex);
700 netdev_dummy_set_config(struct netdev *netdev_, const struct smap *args)
702 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
705 ovs_mutex_lock(&netdev->mutex);
706 netdev->ifindex = smap_get_int(args, "ifindex", -EOPNOTSUPP);
708 dummy_packet_conn_set_config(&netdev->conn, args);
710 if (netdev->rxq_pcap) {
711 fclose(netdev->rxq_pcap);
713 if (netdev->tx_pcap && netdev->tx_pcap != netdev->rxq_pcap) {
714 fclose(netdev->tx_pcap);
716 netdev->rxq_pcap = netdev->tx_pcap = NULL;
717 pcap = smap_get(args, "pcap");
719 netdev->rxq_pcap = netdev->tx_pcap = ovs_pcap_open(pcap, "ab");
721 const char *rxq_pcap = smap_get(args, "rxq_pcap");
722 const char *tx_pcap = smap_get(args, "tx_pcap");
725 netdev->rxq_pcap = ovs_pcap_open(rxq_pcap, "ab");
728 netdev->tx_pcap = ovs_pcap_open(tx_pcap, "ab");
732 ovs_mutex_unlock(&netdev->mutex);
737 static struct netdev_rxq *
738 netdev_dummy_rxq_alloc(void)
740 struct netdev_rxq_dummy *rx = xzalloc(sizeof *rx);
745 netdev_dummy_rxq_construct(struct netdev_rxq *rxq_)
747 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
748 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
750 ovs_mutex_lock(&netdev->mutex);
751 list_push_back(&netdev->rxes, &rx->node);
752 list_init(&rx->recv_queue);
753 rx->recv_queue_len = 0;
754 rx->seq = seq_create();
755 ovs_mutex_unlock(&netdev->mutex);
761 netdev_dummy_rxq_destruct(struct netdev_rxq *rxq_)
763 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
764 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
766 ovs_mutex_lock(&netdev->mutex);
767 list_remove(&rx->node);
768 ofpbuf_list_delete(&rx->recv_queue);
769 ovs_mutex_unlock(&netdev->mutex);
770 seq_destroy(rx->seq);
774 netdev_dummy_rxq_dealloc(struct netdev_rxq *rxq_)
776 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
782 netdev_dummy_rxq_recv(struct netdev_rxq *rxq_, struct ofpbuf **arr, int *c)
784 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
785 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
786 struct ofpbuf *packet;
788 ovs_mutex_lock(&netdev->mutex);
789 if (!list_is_empty(&rx->recv_queue)) {
790 packet = ofpbuf_from_list(list_pop_front(&rx->recv_queue));
791 rx->recv_queue_len--;
795 ovs_mutex_unlock(&netdev->mutex);
800 ovs_mutex_lock(&netdev->mutex);
801 netdev->stats.rx_packets++;
802 netdev->stats.rx_bytes += ofpbuf_size(packet);
803 ovs_mutex_unlock(&netdev->mutex);
805 dp_packet_pad(packet);
812 netdev_dummy_rxq_wait(struct netdev_rxq *rxq_)
814 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
815 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
816 uint64_t seq = seq_read(rx->seq);
818 ovs_mutex_lock(&netdev->mutex);
819 if (!list_is_empty(&rx->recv_queue)) {
820 poll_immediate_wake();
822 seq_wait(rx->seq, seq);
824 ovs_mutex_unlock(&netdev->mutex);
828 netdev_dummy_rxq_drain(struct netdev_rxq *rxq_)
830 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
831 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
833 ovs_mutex_lock(&netdev->mutex);
834 ofpbuf_list_delete(&rx->recv_queue);
835 rx->recv_queue_len = 0;
836 ovs_mutex_unlock(&netdev->mutex);
844 netdev_dummy_send(struct netdev *netdev, struct ofpbuf *pkt, bool may_steal)
846 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
847 const void *buffer = ofpbuf_data(pkt);
848 size_t size = ofpbuf_size(pkt);
850 if (size < ETH_HEADER_LEN) {
853 const struct eth_header *eth = buffer;
856 ovs_mutex_lock(&dev->mutex);
857 max_size = dev->mtu + ETH_HEADER_LEN;
858 ovs_mutex_unlock(&dev->mutex);
860 if (eth->eth_type == htons(ETH_TYPE_VLAN)) {
861 max_size += VLAN_HEADER_LEN;
863 if (size > max_size) {
868 ovs_mutex_lock(&dev->mutex);
869 dev->stats.tx_packets++;
870 dev->stats.tx_bytes += size;
872 dummy_packet_conn_send(&dev->conn, buffer, size);
875 struct ofpbuf packet;
877 ofpbuf_use_const(&packet, buffer, size);
878 ovs_pcap_write(dev->tx_pcap, &packet);
879 fflush(dev->tx_pcap);
882 ovs_mutex_unlock(&dev->mutex);
891 netdev_dummy_set_etheraddr(struct netdev *netdev,
892 const uint8_t mac[ETH_ADDR_LEN])
894 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
896 ovs_mutex_lock(&dev->mutex);
897 if (!eth_addr_equals(dev->hwaddr, mac)) {
898 memcpy(dev->hwaddr, mac, ETH_ADDR_LEN);
899 netdev_change_seq_changed(netdev);
901 ovs_mutex_unlock(&dev->mutex);
907 netdev_dummy_get_etheraddr(const struct netdev *netdev,
908 uint8_t mac[ETH_ADDR_LEN])
910 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
912 ovs_mutex_lock(&dev->mutex);
913 memcpy(mac, dev->hwaddr, ETH_ADDR_LEN);
914 ovs_mutex_unlock(&dev->mutex);
920 netdev_dummy_get_mtu(const struct netdev *netdev, int *mtup)
922 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
924 ovs_mutex_lock(&dev->mutex);
926 ovs_mutex_unlock(&dev->mutex);
932 netdev_dummy_set_mtu(const struct netdev *netdev, int mtu)
934 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
936 ovs_mutex_lock(&dev->mutex);
938 ovs_mutex_unlock(&dev->mutex);
944 netdev_dummy_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
946 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
948 ovs_mutex_lock(&dev->mutex);
950 ovs_mutex_unlock(&dev->mutex);
956 netdev_dummy_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
958 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
960 ovs_mutex_lock(&dev->mutex);
962 ovs_mutex_unlock(&dev->mutex);
968 netdev_dummy_get_ifindex(const struct netdev *netdev)
970 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
973 ovs_mutex_lock(&dev->mutex);
974 ifindex = dev->ifindex;
975 ovs_mutex_unlock(&dev->mutex);
981 netdev_dummy_update_flags__(struct netdev_dummy *netdev,
982 enum netdev_flags off, enum netdev_flags on,
983 enum netdev_flags *old_flagsp)
984 OVS_REQUIRES(netdev->mutex)
986 if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) {
990 *old_flagsp = netdev->flags;
992 netdev->flags &= ~off;
993 if (*old_flagsp != netdev->flags) {
994 netdev_change_seq_changed(&netdev->up);
1001 netdev_dummy_update_flags(struct netdev *netdev_,
1002 enum netdev_flags off, enum netdev_flags on,
1003 enum netdev_flags *old_flagsp)
1005 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
1008 ovs_mutex_lock(&netdev->mutex);
1009 error = netdev_dummy_update_flags__(netdev, off, on, old_flagsp);
1010 ovs_mutex_unlock(&netdev->mutex);
1015 /* Helper functions. */
1017 static const struct netdev_class dummy_class = {
1024 netdev_dummy_construct,
1025 netdev_dummy_destruct,
1026 netdev_dummy_dealloc,
1027 netdev_dummy_get_config,
1028 netdev_dummy_set_config,
1029 NULL, /* get_tunnel_config */
1031 netdev_dummy_send, /* send */
1032 NULL, /* send_wait */
1034 netdev_dummy_set_etheraddr,
1035 netdev_dummy_get_etheraddr,
1036 netdev_dummy_get_mtu,
1037 netdev_dummy_set_mtu,
1038 netdev_dummy_get_ifindex,
1039 NULL, /* get_carrier */
1040 NULL, /* get_carrier_resets */
1041 NULL, /* get_miimon */
1042 netdev_dummy_get_stats,
1043 netdev_dummy_set_stats,
1045 NULL, /* get_features */
1046 NULL, /* set_advertisements */
1048 NULL, /* set_policing */
1049 NULL, /* get_qos_types */
1050 NULL, /* get_qos_capabilities */
1053 NULL, /* get_queue */
1054 NULL, /* set_queue */
1055 NULL, /* delete_queue */
1056 NULL, /* get_queue_stats */
1057 NULL, /* queue_dump_start */
1058 NULL, /* queue_dump_next */
1059 NULL, /* queue_dump_done */
1060 NULL, /* dump_queue_stats */
1065 NULL, /* add_router */
1066 NULL, /* get_next_hop */
1067 NULL, /* get_status */
1068 NULL, /* arp_lookup */
1070 netdev_dummy_update_flags,
1072 netdev_dummy_rxq_alloc,
1073 netdev_dummy_rxq_construct,
1074 netdev_dummy_rxq_destruct,
1075 netdev_dummy_rxq_dealloc,
1076 netdev_dummy_rxq_recv,
1077 netdev_dummy_rxq_wait,
1078 netdev_dummy_rxq_drain,
1081 static struct ofpbuf *
1082 eth_from_packet_or_flow(const char *s)
1084 enum odp_key_fitness fitness;
1085 struct ofpbuf *packet;
1086 struct ofpbuf odp_key;
1090 if (!eth_from_hex(s, &packet)) {
1094 /* Convert string to datapath key.
1096 * It would actually be nicer to parse an OpenFlow-like flow key here, but
1097 * the code for that currently calls exit() on parse error. We have to
1098 * settle for parsing a datapath key for now.
1100 ofpbuf_init(&odp_key, 0);
1101 error = odp_flow_from_string(s, NULL, &odp_key, NULL);
1103 ofpbuf_uninit(&odp_key);
1107 /* Convert odp_key to flow. */
1108 fitness = odp_flow_key_to_flow(ofpbuf_data(&odp_key), ofpbuf_size(&odp_key), &flow);
1109 if (fitness == ODP_FIT_ERROR) {
1110 ofpbuf_uninit(&odp_key);
1114 packet = ofpbuf_new(0);
1115 flow_compose(packet, &flow);
1117 ofpbuf_uninit(&odp_key);
1122 netdev_dummy_queue_packet__(struct netdev_rxq_dummy *rx, struct ofpbuf *packet)
1124 list_push_back(&rx->recv_queue, &packet->list_node);
1125 rx->recv_queue_len++;
1126 seq_change(rx->seq);
1130 netdev_dummy_queue_packet(struct netdev_dummy *dummy, struct ofpbuf *packet)
1131 OVS_REQUIRES(dummy->mutex)
1133 struct netdev_rxq_dummy *rx, *prev;
1135 if (dummy->rxq_pcap) {
1136 ovs_pcap_write(dummy->rxq_pcap, packet);
1137 fflush(dummy->rxq_pcap);
1140 LIST_FOR_EACH (rx, node, &dummy->rxes) {
1141 if (rx->recv_queue_len < NETDEV_DUMMY_MAX_QUEUE) {
1143 netdev_dummy_queue_packet__(prev, ofpbuf_clone(packet));
1149 netdev_dummy_queue_packet__(prev, packet);
1151 ofpbuf_delete(packet);
1156 netdev_dummy_receive(struct unixctl_conn *conn,
1157 int argc, const char *argv[], void *aux OVS_UNUSED)
1159 struct netdev_dummy *dummy_dev;
1160 struct netdev *netdev;
1163 netdev = netdev_from_name(argv[1]);
1164 if (!netdev || !is_dummy_class(netdev->netdev_class)) {
1165 unixctl_command_reply_error(conn, "no such dummy netdev");
1168 dummy_dev = netdev_dummy_cast(netdev);
1170 for (i = 2; i < argc; i++) {
1171 struct ofpbuf *packet;
1173 packet = eth_from_packet_or_flow(argv[i]);
1175 unixctl_command_reply_error(conn, "bad packet syntax");
1179 ovs_mutex_lock(&dummy_dev->mutex);
1180 netdev_dummy_queue_packet(dummy_dev, packet);
1181 ovs_mutex_unlock(&dummy_dev->mutex);
1184 unixctl_command_reply(conn, NULL);
1187 netdev_close(netdev);
1191 netdev_dummy_set_admin_state__(struct netdev_dummy *dev, bool admin_state)
1192 OVS_REQUIRES(dev->mutex)
1194 enum netdev_flags old_flags;
1197 netdev_dummy_update_flags__(dev, 0, NETDEV_UP, &old_flags);
1199 netdev_dummy_update_flags__(dev, NETDEV_UP, 0, &old_flags);
1204 netdev_dummy_set_admin_state(struct unixctl_conn *conn, int argc,
1205 const char *argv[], void *aux OVS_UNUSED)
1209 if (!strcasecmp(argv[argc - 1], "up")) {
1211 } else if ( !strcasecmp(argv[argc - 1], "down")) {
1214 unixctl_command_reply_error(conn, "Invalid Admin State");
1219 struct netdev *netdev = netdev_from_name(argv[1]);
1220 if (netdev && is_dummy_class(netdev->netdev_class)) {
1221 struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
1223 ovs_mutex_lock(&dummy_dev->mutex);
1224 netdev_dummy_set_admin_state__(dummy_dev, up);
1225 ovs_mutex_unlock(&dummy_dev->mutex);
1227 netdev_close(netdev);
1229 unixctl_command_reply_error(conn, "Unknown Dummy Interface");
1230 netdev_close(netdev);
1234 struct netdev_dummy *netdev;
1236 ovs_mutex_lock(&dummy_list_mutex);
1237 LIST_FOR_EACH (netdev, list_node, &dummy_list) {
1238 ovs_mutex_lock(&netdev->mutex);
1239 netdev_dummy_set_admin_state__(netdev, up);
1240 ovs_mutex_unlock(&netdev->mutex);
1242 ovs_mutex_unlock(&dummy_list_mutex);
1244 unixctl_command_reply(conn, "OK");
1248 display_conn_state__(struct ds *s, const char *name,
1249 enum dummy_netdev_conn_state state)
1251 ds_put_format(s, "%s: ", name);
1254 case CONN_STATE_CONNECTED:
1255 ds_put_cstr(s, "connected\n");
1258 case CONN_STATE_NOT_CONNECTED:
1259 ds_put_cstr(s, "disconnected\n");
1262 case CONN_STATE_UNKNOWN:
1264 ds_put_cstr(s, "unknown\n");
1270 netdev_dummy_conn_state(struct unixctl_conn *conn, int argc,
1271 const char *argv[], void *aux OVS_UNUSED)
1273 enum dummy_netdev_conn_state state = CONN_STATE_UNKNOWN;
1279 const char *dev_name = argv[1];
1280 struct netdev *netdev = netdev_from_name(dev_name);
1282 if (netdev && is_dummy_class(netdev->netdev_class)) {
1283 struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
1285 ovs_mutex_lock(&dummy_dev->mutex);
1286 state = dummy_netdev_get_conn_state(&dummy_dev->conn);
1287 ovs_mutex_unlock(&dummy_dev->mutex);
1289 netdev_close(netdev);
1291 display_conn_state__(&s, dev_name, state);
1293 struct netdev_dummy *netdev;
1295 ovs_mutex_lock(&dummy_list_mutex);
1296 LIST_FOR_EACH (netdev, list_node, &dummy_list) {
1297 ovs_mutex_lock(&netdev->mutex);
1298 state = dummy_netdev_get_conn_state(&netdev->conn);
1299 ovs_mutex_unlock(&netdev->mutex);
1300 if (state != CONN_STATE_UNKNOWN) {
1301 display_conn_state__(&s, netdev->up.name, state);
1304 ovs_mutex_unlock(&dummy_list_mutex);
1307 unixctl_command_reply(conn, ds_cstr(&s));
1312 netdev_dummy_register(bool override)
1314 unixctl_command_register("netdev-dummy/receive", "NAME PACKET|FLOW...",
1315 2, INT_MAX, netdev_dummy_receive, NULL);
1316 unixctl_command_register("netdev-dummy/set-admin-state",
1317 "[netdev] up|down", 1, 2,
1318 netdev_dummy_set_admin_state, NULL);
1319 unixctl_command_register("netdev-dummy/conn-state",
1321 netdev_dummy_conn_state, NULL);
1328 netdev_enumerate_types(&types);
1329 SSET_FOR_EACH (type, &types) {
1330 if (!strcmp(type, "patch")) {
1333 if (!netdev_unregister_provider(type)) {
1334 struct netdev_class *class;
1337 class = xmemdup(&dummy_class, sizeof dummy_class);
1338 class->type = xstrdup(type);
1339 error = netdev_register_provider(class);
1341 VLOG_ERR("%s: failed to register netdev provider (%s)",
1342 type, ovs_strerror(error));
1343 free(CONST_CAST(char *, class->type));
1348 sset_destroy(&types);
1350 netdev_register_provider(&dummy_class);
1352 netdev_vport_tunnel_register();