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"
32 #include "packet-dpif.h"
34 #include "pcap-file.h"
35 #include "poll-loop.h"
39 #include "unaligned.h"
42 #include "reconnect.h"
45 VLOG_DEFINE_THIS_MODULE(netdev_dummy);
49 struct dummy_packet_stream {
50 struct stream *stream;
55 enum dummy_packet_conn_type {
56 NONE, /* No connection is configured. */
57 PASSIVE, /* Listener. */
58 ACTIVE /* Connect to listener. */
61 enum dummy_netdev_conn_state {
62 CONN_STATE_CONNECTED, /* Listener connected. */
63 CONN_STATE_NOT_CONNECTED, /* Listener not connected. */
64 CONN_STATE_UNKNOWN, /* No relavent information. */
67 struct dummy_packet_pconn {
68 struct pstream *pstream;
69 struct dummy_packet_stream *streams;
73 struct dummy_packet_rconn {
74 struct dummy_packet_stream *rstream;
75 struct reconnect *reconnect;
78 struct dummy_packet_conn {
79 enum dummy_packet_conn_type type;
81 struct dummy_packet_pconn pconn;
82 struct dummy_packet_rconn rconn;
86 /* Protects 'dummy_list'. */
87 static struct ovs_mutex dummy_list_mutex = OVS_MUTEX_INITIALIZER;
89 /* Contains all 'struct dummy_dev's. */
90 static struct list dummy_list OVS_GUARDED_BY(dummy_list_mutex)
91 = LIST_INITIALIZER(&dummy_list);
97 struct list list_node OVS_GUARDED_BY(dummy_list_mutex);
99 /* Protects all members below. */
100 struct ovs_mutex mutex OVS_ACQ_AFTER(dummy_list_mutex);
102 uint8_t hwaddr[ETH_ADDR_LEN] OVS_GUARDED;
104 struct netdev_stats stats OVS_GUARDED;
105 enum netdev_flags flags OVS_GUARDED;
106 int ifindex OVS_GUARDED;
108 struct dummy_packet_conn conn OVS_GUARDED;
110 FILE *tx_pcap, *rxq_pcap OVS_GUARDED;
112 struct list rxes OVS_GUARDED; /* List of child "netdev_rxq_dummy"s. */
115 /* Max 'recv_queue_len' in struct netdev_dummy. */
116 #define NETDEV_DUMMY_MAX_QUEUE 100
118 struct netdev_rxq_dummy {
119 struct netdev_rxq up;
120 struct list node; /* In netdev_dummy's "rxes" list. */
121 struct list recv_queue;
122 int recv_queue_len; /* list_size(&recv_queue). */
123 struct seq *seq; /* Reports newly queued packets. */
126 static unixctl_cb_func netdev_dummy_set_admin_state;
127 static int netdev_dummy_construct(struct netdev *);
128 static void netdev_dummy_queue_packet(struct netdev_dummy *, struct ofpbuf *);
130 static void dummy_packet_stream_close(struct dummy_packet_stream *);
133 is_dummy_class(const struct netdev_class *class)
135 return class->construct == netdev_dummy_construct;
138 static struct netdev_dummy *
139 netdev_dummy_cast(const struct netdev *netdev)
141 ovs_assert(is_dummy_class(netdev_get_class(netdev)));
142 return CONTAINER_OF(netdev, struct netdev_dummy, up);
145 static struct netdev_rxq_dummy *
146 netdev_rxq_dummy_cast(const struct netdev_rxq *rx)
148 ovs_assert(is_dummy_class(netdev_get_class(rx->netdev)));
149 return CONTAINER_OF(rx, struct netdev_rxq_dummy, up);
153 dummy_packet_stream_init(struct dummy_packet_stream *s, struct stream *stream)
155 int rxbuf_size = stream ? 2048 : 0;
157 ofpbuf_init(&s->rxbuf, rxbuf_size);
161 static struct dummy_packet_stream *
162 dummy_packet_stream_create(struct stream *stream)
164 struct dummy_packet_stream *s;
166 s = xzalloc(sizeof *s);
167 dummy_packet_stream_init(s, stream);
173 dummy_packet_stream_wait(struct dummy_packet_stream *s)
175 stream_run_wait(s->stream);
176 if (!list_is_empty(&s->txq)) {
177 stream_send_wait(s->stream);
179 stream_recv_wait(s->stream);
183 dummy_packet_stream_send(struct dummy_packet_stream *s, const void *buffer, size_t size)
185 if (list_size(&s->txq) < NETDEV_DUMMY_MAX_QUEUE) {
188 b = ofpbuf_clone_data_with_headroom(buffer, size, 2);
189 put_unaligned_be16(ofpbuf_push_uninit(b, 2), htons(size));
190 list_push_back(&s->txq, &b->list_node);
195 dummy_packet_stream_run(struct netdev_dummy *dev, struct dummy_packet_stream *s)
200 stream_run(s->stream);
202 if (!list_is_empty(&s->txq)) {
203 struct ofpbuf *txbuf;
206 txbuf = ofpbuf_from_list(list_front(&s->txq));
207 retval = stream_send(s->stream, ofpbuf_data(txbuf), ofpbuf_size(txbuf));
210 ofpbuf_pull(txbuf, retval);
211 if (!ofpbuf_size(txbuf)) {
212 list_remove(&txbuf->list_node);
213 ofpbuf_delete(txbuf);
215 } else if (retval != -EAGAIN) {
221 if (ofpbuf_size(&s->rxbuf) < 2) {
222 n = 2 - ofpbuf_size(&s->rxbuf);
226 frame_len = ntohs(get_unaligned_be16(ofpbuf_data(&s->rxbuf)));
227 if (frame_len < ETH_HEADER_LEN) {
231 n = (2 + frame_len) - ofpbuf_size(&s->rxbuf);
238 ofpbuf_prealloc_tailroom(&s->rxbuf, n);
239 retval = stream_recv(s->stream, ofpbuf_tail(&s->rxbuf), n);
242 ofpbuf_set_size(&s->rxbuf, ofpbuf_size(&s->rxbuf) + retval);
243 if (retval == n && ofpbuf_size(&s->rxbuf) > 2) {
244 ofpbuf_pull(&s->rxbuf, 2);
245 netdev_dummy_queue_packet(dev,
246 ofpbuf_clone(&s->rxbuf));
247 ofpbuf_clear(&s->rxbuf);
249 } else if (retval != -EAGAIN) {
250 error = (retval < 0 ? -retval
251 : ofpbuf_size(&s->rxbuf) ? EPROTO
260 dummy_packet_stream_close(struct dummy_packet_stream *s)
262 stream_close(s->stream);
263 ofpbuf_uninit(&s->rxbuf);
264 ofpbuf_list_delete(&s->txq);
268 dummy_packet_conn_init(struct dummy_packet_conn *conn)
270 memset(conn, 0, sizeof *conn);
275 dummy_packet_conn_get_config(struct dummy_packet_conn *conn, struct smap *args)
278 switch (conn->type) {
280 smap_add(args, "pstream", pstream_get_name(conn->u.pconn.pstream));
284 smap_add(args, "stream", stream_get_name(conn->u.rconn.rstream->stream));
294 dummy_packet_conn_close(struct dummy_packet_conn *conn)
297 struct dummy_packet_pconn *pconn = &conn->u.pconn;
298 struct dummy_packet_rconn *rconn = &conn->u.rconn;
300 switch (conn->type) {
302 pstream_close(pconn->pstream);
303 for (i = 0; i < pconn->n_streams; i++) {
304 dummy_packet_stream_close(&pconn->streams[i]);
306 free(pconn->streams);
307 pconn->pstream = NULL;
308 pconn->streams = NULL;
312 dummy_packet_stream_close(rconn->rstream);
313 free(rconn->rstream);
314 rconn->rstream = NULL;
315 reconnect_destroy(rconn->reconnect);
316 rconn->reconnect = NULL;
325 memset(conn, 0, sizeof *conn);
329 dummy_packet_conn_set_config(struct dummy_packet_conn *conn,
330 const struct smap *args)
332 const char *pstream = smap_get(args, "pstream");
333 const char *stream = smap_get(args, "stream");
335 if (pstream && stream) {
336 VLOG_WARN("Open failed: both %s and %s are configured",
341 switch (conn->type) {
343 if (!strcmp(pstream_get_name(conn->u.pconn.pstream), pstream)) {
346 dummy_packet_conn_close(conn);
349 if (!strcmp(stream_get_name(conn->u.rconn.rstream->stream), stream)) {
352 dummy_packet_conn_close(conn);
362 error = pstream_open(pstream, &conn->u.pconn.pstream, DSCP_DEFAULT);
364 VLOG_WARN("%s: open failed (%s)", pstream, ovs_strerror(error));
366 conn->type = PASSIVE;
372 struct stream *active_stream;
373 struct reconnect *reconnect;;
375 reconnect = reconnect_create(time_msec());
376 reconnect_set_name(reconnect, stream);
377 reconnect_set_passive(reconnect, false, time_msec());
378 reconnect_enable(reconnect, time_msec());
379 reconnect_set_backoff(reconnect, 100, INT_MAX);
380 reconnect_set_probe_interval(reconnect, 0);
381 conn->u.rconn.reconnect = reconnect;
384 error = stream_open(stream, &active_stream, DSCP_DEFAULT);
385 conn->u.rconn.rstream = dummy_packet_stream_create(active_stream);
389 reconnect_connected(reconnect, time_msec());
393 reconnect_connecting(reconnect, time_msec());
397 reconnect_connect_failed(reconnect, time_msec(), error);
398 stream_close(active_stream);
399 conn->u.rconn.rstream->stream = NULL;
406 dummy_pconn_run(struct netdev_dummy *dev)
407 OVS_REQUIRES(dev->mutex)
409 struct stream *new_stream;
410 struct dummy_packet_pconn *pconn = &dev->conn.u.pconn;
414 error = pstream_accept(pconn->pstream, &new_stream);
416 struct dummy_packet_stream *s;
418 pconn->streams = xrealloc(pconn->streams,
419 ((pconn->n_streams + 1)
421 s = &pconn->streams[pconn->n_streams++];
422 dummy_packet_stream_init(s, new_stream);
423 } else if (error != EAGAIN) {
424 VLOG_WARN("%s: accept failed (%s)",
425 pstream_get_name(pconn->pstream), ovs_strerror(error));
426 pstream_close(pconn->pstream);
427 pconn->pstream = NULL;
428 dev->conn.type = NONE;
431 for (i = 0; i < pconn->n_streams; i++) {
432 struct dummy_packet_stream *s = &pconn->streams[i];
434 error = dummy_packet_stream_run(dev, s);
436 VLOG_DBG("%s: closing connection (%s)",
437 stream_get_name(s->stream),
438 ovs_retval_to_string(error));
439 dummy_packet_stream_close(s);
440 pconn->streams[i] = pconn->streams[--pconn->n_streams];
446 dummy_rconn_run(struct netdev_dummy *dev)
447 OVS_REQUIRES(dev->mutex)
449 struct dummy_packet_rconn *rconn = &dev->conn.u.rconn;
451 switch (reconnect_run(rconn->reconnect, time_msec())) {
452 case RECONNECT_CONNECT:
456 if (rconn->rstream->stream) {
457 error = stream_connect(rconn->rstream->stream);
459 error = stream_open(reconnect_get_name(rconn->reconnect),
460 &rconn->rstream->stream, DSCP_DEFAULT);
465 reconnect_connected(rconn->reconnect, time_msec());
469 reconnect_connecting(rconn->reconnect, time_msec());
473 reconnect_connect_failed(rconn->reconnect, time_msec(), error);
474 stream_close(rconn->rstream->stream);
475 rconn->rstream->stream = NULL;
481 case RECONNECT_DISCONNECT:
482 case RECONNECT_PROBE:
487 if (reconnect_is_connected(rconn->reconnect)) {
490 err = dummy_packet_stream_run(dev, rconn->rstream);
493 reconnect_disconnected(rconn->reconnect, time_msec(), err);
494 stream_close(rconn->rstream->stream);
495 rconn->rstream->stream = NULL;
501 dummy_packet_conn_run(struct netdev_dummy *dev)
502 OVS_REQUIRES(dev->mutex)
504 switch (dev->conn.type) {
506 dummy_pconn_run(dev);
510 dummy_rconn_run(dev);
520 dummy_packet_conn_wait(struct dummy_packet_conn *conn)
523 switch (conn->type) {
525 pstream_wait(conn->u.pconn.pstream);
526 for (i = 0; i < conn->u.pconn.n_streams; i++) {
527 struct dummy_packet_stream *s = &conn->u.pconn.streams[i];
528 dummy_packet_stream_wait(s);
532 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
533 dummy_packet_stream_wait(conn->u.rconn.rstream);
544 dummy_packet_conn_send(struct dummy_packet_conn *conn,
545 const void *buffer, size_t size)
549 switch (conn->type) {
551 for (i = 0; i < conn->u.pconn.n_streams; i++) {
552 struct dummy_packet_stream *s = &conn->u.pconn.streams[i];
554 dummy_packet_stream_send(s, buffer, size);
555 pstream_wait(conn->u.pconn.pstream);
560 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
561 dummy_packet_stream_send(conn->u.rconn.rstream, buffer, size);
562 dummy_packet_stream_wait(conn->u.rconn.rstream);
572 static enum dummy_netdev_conn_state
573 dummy_netdev_get_conn_state(struct dummy_packet_conn *conn)
575 enum dummy_netdev_conn_state state;
577 if (conn->type == ACTIVE) {
578 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
579 state = CONN_STATE_CONNECTED;
581 state = CONN_STATE_NOT_CONNECTED;
584 state = CONN_STATE_UNKNOWN;
591 netdev_dummy_run(void)
593 struct netdev_dummy *dev;
595 ovs_mutex_lock(&dummy_list_mutex);
596 LIST_FOR_EACH (dev, list_node, &dummy_list) {
597 ovs_mutex_lock(&dev->mutex);
598 dummy_packet_conn_run(dev);
599 ovs_mutex_unlock(&dev->mutex);
601 ovs_mutex_unlock(&dummy_list_mutex);
605 netdev_dummy_wait(void)
607 struct netdev_dummy *dev;
609 ovs_mutex_lock(&dummy_list_mutex);
610 LIST_FOR_EACH (dev, list_node, &dummy_list) {
611 ovs_mutex_lock(&dev->mutex);
612 dummy_packet_conn_wait(&dev->conn);
613 ovs_mutex_unlock(&dev->mutex);
615 ovs_mutex_unlock(&dummy_list_mutex);
618 static struct netdev *
619 netdev_dummy_alloc(void)
621 struct netdev_dummy *netdev = xzalloc(sizeof *netdev);
626 netdev_dummy_construct(struct netdev *netdev_)
628 static atomic_uint next_n = ATOMIC_VAR_INIT(0xaa550000);
629 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
632 atomic_add(&next_n, 1, &n);
634 ovs_mutex_init(&netdev->mutex);
635 ovs_mutex_lock(&netdev->mutex);
636 netdev->hwaddr[0] = 0xaa;
637 netdev->hwaddr[1] = 0x55;
638 netdev->hwaddr[2] = n >> 24;
639 netdev->hwaddr[3] = n >> 16;
640 netdev->hwaddr[4] = n >> 8;
641 netdev->hwaddr[5] = n;
644 netdev->ifindex = -EOPNOTSUPP;
646 dummy_packet_conn_init(&netdev->conn);
648 list_init(&netdev->rxes);
649 ovs_mutex_unlock(&netdev->mutex);
651 ovs_mutex_lock(&dummy_list_mutex);
652 list_push_back(&dummy_list, &netdev->list_node);
653 ovs_mutex_unlock(&dummy_list_mutex);
659 netdev_dummy_destruct(struct netdev *netdev_)
661 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
663 ovs_mutex_lock(&dummy_list_mutex);
664 list_remove(&netdev->list_node);
665 ovs_mutex_unlock(&dummy_list_mutex);
667 ovs_mutex_lock(&netdev->mutex);
668 dummy_packet_conn_close(&netdev->conn);
669 netdev->conn.type = NONE;
671 ovs_mutex_unlock(&netdev->mutex);
672 ovs_mutex_destroy(&netdev->mutex);
676 netdev_dummy_dealloc(struct netdev *netdev_)
678 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
684 netdev_dummy_get_config(const struct netdev *netdev_, struct smap *args)
686 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
688 ovs_mutex_lock(&netdev->mutex);
690 if (netdev->ifindex >= 0) {
691 smap_add_format(args, "ifindex", "%d", netdev->ifindex);
694 dummy_packet_conn_get_config(&netdev->conn, args);
696 ovs_mutex_unlock(&netdev->mutex);
701 netdev_dummy_set_config(struct netdev *netdev_, const struct smap *args)
703 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
706 ovs_mutex_lock(&netdev->mutex);
707 netdev->ifindex = smap_get_int(args, "ifindex", -EOPNOTSUPP);
709 dummy_packet_conn_set_config(&netdev->conn, args);
711 if (netdev->rxq_pcap) {
712 fclose(netdev->rxq_pcap);
714 if (netdev->tx_pcap && netdev->tx_pcap != netdev->rxq_pcap) {
715 fclose(netdev->tx_pcap);
717 netdev->rxq_pcap = netdev->tx_pcap = NULL;
718 pcap = smap_get(args, "pcap");
720 netdev->rxq_pcap = netdev->tx_pcap = ovs_pcap_open(pcap, "ab");
722 const char *rxq_pcap = smap_get(args, "rxq_pcap");
723 const char *tx_pcap = smap_get(args, "tx_pcap");
726 netdev->rxq_pcap = ovs_pcap_open(rxq_pcap, "ab");
729 netdev->tx_pcap = ovs_pcap_open(tx_pcap, "ab");
733 ovs_mutex_unlock(&netdev->mutex);
738 static struct netdev_rxq *
739 netdev_dummy_rxq_alloc(void)
741 struct netdev_rxq_dummy *rx = xzalloc(sizeof *rx);
746 netdev_dummy_rxq_construct(struct netdev_rxq *rxq_)
748 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
749 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
751 ovs_mutex_lock(&netdev->mutex);
752 list_push_back(&netdev->rxes, &rx->node);
753 list_init(&rx->recv_queue);
754 rx->recv_queue_len = 0;
755 rx->seq = seq_create();
756 ovs_mutex_unlock(&netdev->mutex);
762 netdev_dummy_rxq_destruct(struct netdev_rxq *rxq_)
764 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
765 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
767 ovs_mutex_lock(&netdev->mutex);
768 list_remove(&rx->node);
769 ofpbuf_list_delete(&rx->recv_queue);
770 ovs_mutex_unlock(&netdev->mutex);
771 seq_destroy(rx->seq);
775 netdev_dummy_rxq_dealloc(struct netdev_rxq *rxq_)
777 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
783 netdev_dummy_rxq_recv(struct netdev_rxq *rxq_, struct dpif_packet **arr,
786 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
787 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
788 struct ofpbuf *packet;
790 ovs_mutex_lock(&netdev->mutex);
791 if (!list_is_empty(&rx->recv_queue)) {
792 packet = ofpbuf_from_list(list_pop_front(&rx->recv_queue));
793 rx->recv_queue_len--;
797 ovs_mutex_unlock(&netdev->mutex);
802 ovs_mutex_lock(&netdev->mutex);
803 netdev->stats.rx_packets++;
804 netdev->stats.rx_bytes += ofpbuf_size(packet);
805 ovs_mutex_unlock(&netdev->mutex);
807 dp_packet_pad(packet);
809 /* This performs a (sometimes unnecessary) copy */
810 arr[0] = dpif_packet_clone_from_ofpbuf(packet);
811 ofpbuf_delete(packet);
817 netdev_dummy_rxq_wait(struct netdev_rxq *rxq_)
819 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
820 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
821 uint64_t seq = seq_read(rx->seq);
823 ovs_mutex_lock(&netdev->mutex);
824 if (!list_is_empty(&rx->recv_queue)) {
825 poll_immediate_wake();
827 seq_wait(rx->seq, seq);
829 ovs_mutex_unlock(&netdev->mutex);
833 netdev_dummy_rxq_drain(struct netdev_rxq *rxq_)
835 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
836 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
838 ovs_mutex_lock(&netdev->mutex);
839 ofpbuf_list_delete(&rx->recv_queue);
840 rx->recv_queue_len = 0;
841 ovs_mutex_unlock(&netdev->mutex);
849 netdev_dummy_send(struct netdev *netdev, struct dpif_packet **pkts, int cnt,
852 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
856 for (i = 0; i < cnt; i++) {
857 const void *buffer = ofpbuf_data(&pkts[i]->ofpbuf);
858 size_t size = ofpbuf_size(&pkts[i]->ofpbuf);
860 if (size < ETH_HEADER_LEN) {
864 const struct eth_header *eth = buffer;
867 ovs_mutex_lock(&dev->mutex);
868 max_size = dev->mtu + ETH_HEADER_LEN;
869 ovs_mutex_unlock(&dev->mutex);
871 if (eth->eth_type == htons(ETH_TYPE_VLAN)) {
872 max_size += VLAN_HEADER_LEN;
874 if (size > max_size) {
880 ovs_mutex_lock(&dev->mutex);
881 dev->stats.tx_packets++;
882 dev->stats.tx_bytes += size;
884 dummy_packet_conn_send(&dev->conn, buffer, size);
887 struct ofpbuf packet;
889 ofpbuf_use_const(&packet, buffer, size);
890 ovs_pcap_write(dev->tx_pcap, &packet);
891 fflush(dev->tx_pcap);
894 ovs_mutex_unlock(&dev->mutex);
898 for (i = 0; i < cnt; i++) {
899 dpif_packet_delete(pkts[i]);
907 netdev_dummy_set_etheraddr(struct netdev *netdev,
908 const uint8_t mac[ETH_ADDR_LEN])
910 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
912 ovs_mutex_lock(&dev->mutex);
913 if (!eth_addr_equals(dev->hwaddr, mac)) {
914 memcpy(dev->hwaddr, mac, ETH_ADDR_LEN);
915 netdev_change_seq_changed(netdev);
917 ovs_mutex_unlock(&dev->mutex);
923 netdev_dummy_get_etheraddr(const struct netdev *netdev,
924 uint8_t mac[ETH_ADDR_LEN])
926 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
928 ovs_mutex_lock(&dev->mutex);
929 memcpy(mac, dev->hwaddr, ETH_ADDR_LEN);
930 ovs_mutex_unlock(&dev->mutex);
936 netdev_dummy_get_mtu(const struct netdev *netdev, int *mtup)
938 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
940 ovs_mutex_lock(&dev->mutex);
942 ovs_mutex_unlock(&dev->mutex);
948 netdev_dummy_set_mtu(const struct netdev *netdev, int mtu)
950 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
952 ovs_mutex_lock(&dev->mutex);
954 ovs_mutex_unlock(&dev->mutex);
960 netdev_dummy_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
962 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
964 ovs_mutex_lock(&dev->mutex);
966 ovs_mutex_unlock(&dev->mutex);
972 netdev_dummy_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
974 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
976 ovs_mutex_lock(&dev->mutex);
978 ovs_mutex_unlock(&dev->mutex);
984 netdev_dummy_get_ifindex(const struct netdev *netdev)
986 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
989 ovs_mutex_lock(&dev->mutex);
990 ifindex = dev->ifindex;
991 ovs_mutex_unlock(&dev->mutex);
997 netdev_dummy_update_flags__(struct netdev_dummy *netdev,
998 enum netdev_flags off, enum netdev_flags on,
999 enum netdev_flags *old_flagsp)
1000 OVS_REQUIRES(netdev->mutex)
1002 if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) {
1006 *old_flagsp = netdev->flags;
1007 netdev->flags |= on;
1008 netdev->flags &= ~off;
1009 if (*old_flagsp != netdev->flags) {
1010 netdev_change_seq_changed(&netdev->up);
1017 netdev_dummy_update_flags(struct netdev *netdev_,
1018 enum netdev_flags off, enum netdev_flags on,
1019 enum netdev_flags *old_flagsp)
1021 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
1024 ovs_mutex_lock(&netdev->mutex);
1025 error = netdev_dummy_update_flags__(netdev, off, on, old_flagsp);
1026 ovs_mutex_unlock(&netdev->mutex);
1031 /* Helper functions. */
1033 static const struct netdev_class dummy_class = {
1040 netdev_dummy_construct,
1041 netdev_dummy_destruct,
1042 netdev_dummy_dealloc,
1043 netdev_dummy_get_config,
1044 netdev_dummy_set_config,
1045 NULL, /* get_tunnel_config */
1047 netdev_dummy_send, /* send */
1048 NULL, /* send_wait */
1050 netdev_dummy_set_etheraddr,
1051 netdev_dummy_get_etheraddr,
1052 netdev_dummy_get_mtu,
1053 netdev_dummy_set_mtu,
1054 netdev_dummy_get_ifindex,
1055 NULL, /* get_carrier */
1056 NULL, /* get_carrier_resets */
1057 NULL, /* get_miimon */
1058 netdev_dummy_get_stats,
1059 netdev_dummy_set_stats,
1061 NULL, /* get_features */
1062 NULL, /* set_advertisements */
1064 NULL, /* set_policing */
1065 NULL, /* get_qos_types */
1066 NULL, /* get_qos_capabilities */
1069 NULL, /* get_queue */
1070 NULL, /* set_queue */
1071 NULL, /* delete_queue */
1072 NULL, /* get_queue_stats */
1073 NULL, /* queue_dump_start */
1074 NULL, /* queue_dump_next */
1075 NULL, /* queue_dump_done */
1076 NULL, /* dump_queue_stats */
1081 NULL, /* add_router */
1082 NULL, /* get_next_hop */
1083 NULL, /* get_status */
1084 NULL, /* arp_lookup */
1086 netdev_dummy_update_flags,
1088 netdev_dummy_rxq_alloc,
1089 netdev_dummy_rxq_construct,
1090 netdev_dummy_rxq_destruct,
1091 netdev_dummy_rxq_dealloc,
1092 netdev_dummy_rxq_recv,
1093 netdev_dummy_rxq_wait,
1094 netdev_dummy_rxq_drain,
1097 static struct ofpbuf *
1098 eth_from_packet_or_flow(const char *s)
1100 enum odp_key_fitness fitness;
1101 struct ofpbuf *packet;
1102 struct ofpbuf odp_key;
1106 if (!eth_from_hex(s, &packet)) {
1110 /* Convert string to datapath key.
1112 * It would actually be nicer to parse an OpenFlow-like flow key here, but
1113 * the code for that currently calls exit() on parse error. We have to
1114 * settle for parsing a datapath key for now.
1116 ofpbuf_init(&odp_key, 0);
1117 error = odp_flow_from_string(s, NULL, &odp_key, NULL);
1119 ofpbuf_uninit(&odp_key);
1123 /* Convert odp_key to flow. */
1124 fitness = odp_flow_key_to_flow(ofpbuf_data(&odp_key), ofpbuf_size(&odp_key), &flow);
1125 if (fitness == ODP_FIT_ERROR) {
1126 ofpbuf_uninit(&odp_key);
1130 packet = ofpbuf_new(0);
1131 flow_compose(packet, &flow);
1133 ofpbuf_uninit(&odp_key);
1138 netdev_dummy_queue_packet__(struct netdev_rxq_dummy *rx, struct ofpbuf *packet)
1140 list_push_back(&rx->recv_queue, &packet->list_node);
1141 rx->recv_queue_len++;
1142 seq_change(rx->seq);
1146 netdev_dummy_queue_packet(struct netdev_dummy *dummy, struct ofpbuf *packet)
1147 OVS_REQUIRES(dummy->mutex)
1149 struct netdev_rxq_dummy *rx, *prev;
1151 if (dummy->rxq_pcap) {
1152 ovs_pcap_write(dummy->rxq_pcap, packet);
1153 fflush(dummy->rxq_pcap);
1156 LIST_FOR_EACH (rx, node, &dummy->rxes) {
1157 if (rx->recv_queue_len < NETDEV_DUMMY_MAX_QUEUE) {
1159 netdev_dummy_queue_packet__(prev, ofpbuf_clone(packet));
1165 netdev_dummy_queue_packet__(prev, packet);
1167 ofpbuf_delete(packet);
1172 netdev_dummy_receive(struct unixctl_conn *conn,
1173 int argc, const char *argv[], void *aux OVS_UNUSED)
1175 struct netdev_dummy *dummy_dev;
1176 struct netdev *netdev;
1179 netdev = netdev_from_name(argv[1]);
1180 if (!netdev || !is_dummy_class(netdev->netdev_class)) {
1181 unixctl_command_reply_error(conn, "no such dummy netdev");
1184 dummy_dev = netdev_dummy_cast(netdev);
1186 for (i = 2; i < argc; i++) {
1187 struct ofpbuf *packet;
1189 packet = eth_from_packet_or_flow(argv[i]);
1191 unixctl_command_reply_error(conn, "bad packet syntax");
1195 ovs_mutex_lock(&dummy_dev->mutex);
1196 netdev_dummy_queue_packet(dummy_dev, packet);
1197 ovs_mutex_unlock(&dummy_dev->mutex);
1200 unixctl_command_reply(conn, NULL);
1203 netdev_close(netdev);
1207 netdev_dummy_set_admin_state__(struct netdev_dummy *dev, bool admin_state)
1208 OVS_REQUIRES(dev->mutex)
1210 enum netdev_flags old_flags;
1213 netdev_dummy_update_flags__(dev, 0, NETDEV_UP, &old_flags);
1215 netdev_dummy_update_flags__(dev, NETDEV_UP, 0, &old_flags);
1220 netdev_dummy_set_admin_state(struct unixctl_conn *conn, int argc,
1221 const char *argv[], void *aux OVS_UNUSED)
1225 if (!strcasecmp(argv[argc - 1], "up")) {
1227 } else if ( !strcasecmp(argv[argc - 1], "down")) {
1230 unixctl_command_reply_error(conn, "Invalid Admin State");
1235 struct netdev *netdev = netdev_from_name(argv[1]);
1236 if (netdev && is_dummy_class(netdev->netdev_class)) {
1237 struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
1239 ovs_mutex_lock(&dummy_dev->mutex);
1240 netdev_dummy_set_admin_state__(dummy_dev, up);
1241 ovs_mutex_unlock(&dummy_dev->mutex);
1243 netdev_close(netdev);
1245 unixctl_command_reply_error(conn, "Unknown Dummy Interface");
1246 netdev_close(netdev);
1250 struct netdev_dummy *netdev;
1252 ovs_mutex_lock(&dummy_list_mutex);
1253 LIST_FOR_EACH (netdev, list_node, &dummy_list) {
1254 ovs_mutex_lock(&netdev->mutex);
1255 netdev_dummy_set_admin_state__(netdev, up);
1256 ovs_mutex_unlock(&netdev->mutex);
1258 ovs_mutex_unlock(&dummy_list_mutex);
1260 unixctl_command_reply(conn, "OK");
1264 display_conn_state__(struct ds *s, const char *name,
1265 enum dummy_netdev_conn_state state)
1267 ds_put_format(s, "%s: ", name);
1270 case CONN_STATE_CONNECTED:
1271 ds_put_cstr(s, "connected\n");
1274 case CONN_STATE_NOT_CONNECTED:
1275 ds_put_cstr(s, "disconnected\n");
1278 case CONN_STATE_UNKNOWN:
1280 ds_put_cstr(s, "unknown\n");
1286 netdev_dummy_conn_state(struct unixctl_conn *conn, int argc,
1287 const char *argv[], void *aux OVS_UNUSED)
1289 enum dummy_netdev_conn_state state = CONN_STATE_UNKNOWN;
1295 const char *dev_name = argv[1];
1296 struct netdev *netdev = netdev_from_name(dev_name);
1298 if (netdev && is_dummy_class(netdev->netdev_class)) {
1299 struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
1301 ovs_mutex_lock(&dummy_dev->mutex);
1302 state = dummy_netdev_get_conn_state(&dummy_dev->conn);
1303 ovs_mutex_unlock(&dummy_dev->mutex);
1305 netdev_close(netdev);
1307 display_conn_state__(&s, dev_name, state);
1309 struct netdev_dummy *netdev;
1311 ovs_mutex_lock(&dummy_list_mutex);
1312 LIST_FOR_EACH (netdev, list_node, &dummy_list) {
1313 ovs_mutex_lock(&netdev->mutex);
1314 state = dummy_netdev_get_conn_state(&netdev->conn);
1315 ovs_mutex_unlock(&netdev->mutex);
1316 if (state != CONN_STATE_UNKNOWN) {
1317 display_conn_state__(&s, netdev->up.name, state);
1320 ovs_mutex_unlock(&dummy_list_mutex);
1323 unixctl_command_reply(conn, ds_cstr(&s));
1328 netdev_dummy_register(bool override)
1330 unixctl_command_register("netdev-dummy/receive", "NAME PACKET|FLOW...",
1331 2, INT_MAX, netdev_dummy_receive, NULL);
1332 unixctl_command_register("netdev-dummy/set-admin-state",
1333 "[netdev] up|down", 1, 2,
1334 netdev_dummy_set_admin_state, NULL);
1335 unixctl_command_register("netdev-dummy/conn-state",
1337 netdev_dummy_conn_state, NULL);
1344 netdev_enumerate_types(&types);
1345 SSET_FOR_EACH (type, &types) {
1346 if (!strcmp(type, "patch")) {
1349 if (!netdev_unregister_provider(type)) {
1350 struct netdev_class *class;
1353 class = xmemdup(&dummy_class, sizeof dummy_class);
1354 class->type = xstrdup(type);
1355 error = netdev_register_provider(class);
1357 VLOG_ERR("%s: failed to register netdev provider (%s)",
1358 type, ovs_strerror(error));
1359 free(CONST_CAST(char *, class->type));
1364 sset_destroy(&types);
1366 netdev_register_provider(&dummy_class);
1368 netdev_vport_tunnel_register();