2 * Copyright (c) 2010, 2011, 2012, 2013, 2015, 2016 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.
24 #include "dp-packet.h"
25 #include "dpif-netdev.h"
27 #include "netdev-provider.h"
28 #include "netdev-vport.h"
30 #include "openvswitch/dynamic-string.h"
31 #include "openvswitch/list.h"
32 #include "openvswitch/ofp-print.h"
33 #include "openvswitch/ofpbuf.h"
34 #include "openvswitch/vlog.h"
35 #include "ovs-atomic.h"
37 #include "pcap-file.h"
38 #include "poll-loop.h"
42 #include "unaligned.h"
45 #include "reconnect.h"
47 VLOG_DEFINE_THIS_MODULE(netdev_dummy);
51 struct dummy_packet_stream {
52 struct stream *stream;
53 struct dp_packet rxbuf;
57 enum dummy_packet_conn_type {
58 NONE, /* No connection is configured. */
59 PASSIVE, /* Listener. */
60 ACTIVE /* Connect to listener. */
63 enum dummy_netdev_conn_state {
64 CONN_STATE_CONNECTED, /* Listener connected. */
65 CONN_STATE_NOT_CONNECTED, /* Listener not connected. */
66 CONN_STATE_UNKNOWN, /* No relavent information. */
69 struct dummy_packet_pconn {
70 struct pstream *pstream;
71 struct dummy_packet_stream *streams;
75 struct dummy_packet_rconn {
76 struct dummy_packet_stream *rstream;
77 struct reconnect *reconnect;
80 struct dummy_packet_conn {
81 enum dummy_packet_conn_type type;
83 struct dummy_packet_pconn pconn;
84 struct dummy_packet_rconn rconn;
88 struct pkt_list_node {
89 struct dp_packet *pkt;
90 struct ovs_list list_node;
93 /* Protects 'dummy_list'. */
94 static struct ovs_mutex dummy_list_mutex = OVS_MUTEX_INITIALIZER;
96 /* Contains all 'struct dummy_dev's. */
97 static struct ovs_list dummy_list OVS_GUARDED_BY(dummy_list_mutex)
98 = OVS_LIST_INITIALIZER(&dummy_list);
100 struct netdev_dummy {
104 struct ovs_list list_node OVS_GUARDED_BY(dummy_list_mutex);
106 /* Protects all members below. */
107 struct ovs_mutex mutex OVS_ACQ_AFTER(dummy_list_mutex);
109 struct eth_addr hwaddr OVS_GUARDED;
111 struct netdev_stats stats OVS_GUARDED;
112 enum netdev_flags flags OVS_GUARDED;
113 int ifindex OVS_GUARDED;
115 struct dummy_packet_conn conn OVS_GUARDED;
117 FILE *tx_pcap, *rxq_pcap OVS_GUARDED;
119 struct in_addr address, netmask;
120 struct in6_addr ipv6, ipv6_mask;
121 struct ovs_list rxes OVS_GUARDED; /* List of child "netdev_rxq_dummy"s. */
123 /* The following properties are for dummy-pmd and they cannot be changed
124 * when a device is running, so we remember the request and update them
125 * next time netdev_dummy_reconfigure() is called. */
130 /* Max 'recv_queue_len' in struct netdev_dummy. */
131 #define NETDEV_DUMMY_MAX_QUEUE 100
133 struct netdev_rxq_dummy {
134 struct netdev_rxq up;
135 struct ovs_list node; /* In netdev_dummy's "rxes" list. */
136 struct ovs_list recv_queue;
137 int recv_queue_len; /* ovs_list_size(&recv_queue). */
138 struct seq *seq; /* Reports newly queued packets. */
141 static unixctl_cb_func netdev_dummy_set_admin_state;
142 static int netdev_dummy_construct(struct netdev *);
143 static void netdev_dummy_queue_packet(struct netdev_dummy *,
144 struct dp_packet *, int);
146 static void dummy_packet_stream_close(struct dummy_packet_stream *);
148 static void pkt_list_delete(struct ovs_list *);
151 is_dummy_class(const struct netdev_class *class)
153 return class->construct == netdev_dummy_construct;
156 static struct netdev_dummy *
157 netdev_dummy_cast(const struct netdev *netdev)
159 ovs_assert(is_dummy_class(netdev_get_class(netdev)));
160 return CONTAINER_OF(netdev, struct netdev_dummy, up);
163 static struct netdev_rxq_dummy *
164 netdev_rxq_dummy_cast(const struct netdev_rxq *rx)
166 ovs_assert(is_dummy_class(netdev_get_class(rx->netdev)));
167 return CONTAINER_OF(rx, struct netdev_rxq_dummy, up);
171 dummy_packet_stream_init(struct dummy_packet_stream *s, struct stream *stream)
173 int rxbuf_size = stream ? 2048 : 0;
175 dp_packet_init(&s->rxbuf, rxbuf_size);
176 ovs_list_init(&s->txq);
179 static struct dummy_packet_stream *
180 dummy_packet_stream_create(struct stream *stream)
182 struct dummy_packet_stream *s;
184 s = xzalloc(sizeof *s);
185 dummy_packet_stream_init(s, stream);
191 dummy_packet_stream_wait(struct dummy_packet_stream *s)
193 stream_run_wait(s->stream);
194 if (!ovs_list_is_empty(&s->txq)) {
195 stream_send_wait(s->stream);
197 stream_recv_wait(s->stream);
201 dummy_packet_stream_send(struct dummy_packet_stream *s, const void *buffer, size_t size)
203 if (ovs_list_size(&s->txq) < NETDEV_DUMMY_MAX_QUEUE) {
205 struct pkt_list_node *node;
207 b = dp_packet_clone_data_with_headroom(buffer, size, 2);
208 put_unaligned_be16(dp_packet_push_uninit(b, 2), htons(size));
210 node = xmalloc(sizeof *node);
212 ovs_list_push_back(&s->txq, &node->list_node);
217 dummy_packet_stream_run(struct netdev_dummy *dev, struct dummy_packet_stream *s)
222 stream_run(s->stream);
224 if (!ovs_list_is_empty(&s->txq)) {
225 struct pkt_list_node *txbuf_node;
226 struct dp_packet *txbuf;
229 ASSIGN_CONTAINER(txbuf_node, ovs_list_front(&s->txq), list_node);
230 txbuf = txbuf_node->pkt;
231 retval = stream_send(s->stream, dp_packet_data(txbuf), dp_packet_size(txbuf));
234 dp_packet_pull(txbuf, retval);
235 if (!dp_packet_size(txbuf)) {
236 ovs_list_remove(&txbuf_node->list_node);
238 dp_packet_delete(txbuf);
240 } else if (retval != -EAGAIN) {
246 if (dp_packet_size(&s->rxbuf) < 2) {
247 n = 2 - dp_packet_size(&s->rxbuf);
251 frame_len = ntohs(get_unaligned_be16(dp_packet_data(&s->rxbuf)));
252 if (frame_len < ETH_HEADER_LEN) {
256 n = (2 + frame_len) - dp_packet_size(&s->rxbuf);
263 dp_packet_prealloc_tailroom(&s->rxbuf, n);
264 retval = stream_recv(s->stream, dp_packet_tail(&s->rxbuf), n);
267 dp_packet_set_size(&s->rxbuf, dp_packet_size(&s->rxbuf) + retval);
268 if (retval == n && dp_packet_size(&s->rxbuf) > 2) {
269 dp_packet_pull(&s->rxbuf, 2);
270 netdev_dummy_queue_packet(dev,
271 dp_packet_clone(&s->rxbuf), 0);
272 dp_packet_clear(&s->rxbuf);
274 } else if (retval != -EAGAIN) {
275 error = (retval < 0 ? -retval
276 : dp_packet_size(&s->rxbuf) ? EPROTO
285 dummy_packet_stream_close(struct dummy_packet_stream *s)
287 stream_close(s->stream);
288 dp_packet_uninit(&s->rxbuf);
289 pkt_list_delete(&s->txq);
293 dummy_packet_conn_init(struct dummy_packet_conn *conn)
295 memset(conn, 0, sizeof *conn);
300 dummy_packet_conn_get_config(struct dummy_packet_conn *conn, struct smap *args)
303 switch (conn->type) {
305 smap_add(args, "pstream", pstream_get_name(conn->u.pconn.pstream));
309 smap_add(args, "stream", stream_get_name(conn->u.rconn.rstream->stream));
319 dummy_packet_conn_close(struct dummy_packet_conn *conn)
322 struct dummy_packet_pconn *pconn = &conn->u.pconn;
323 struct dummy_packet_rconn *rconn = &conn->u.rconn;
325 switch (conn->type) {
327 pstream_close(pconn->pstream);
328 for (i = 0; i < pconn->n_streams; i++) {
329 dummy_packet_stream_close(&pconn->streams[i]);
331 free(pconn->streams);
332 pconn->pstream = NULL;
333 pconn->streams = NULL;
337 dummy_packet_stream_close(rconn->rstream);
338 free(rconn->rstream);
339 rconn->rstream = NULL;
340 reconnect_destroy(rconn->reconnect);
341 rconn->reconnect = NULL;
350 memset(conn, 0, sizeof *conn);
354 dummy_packet_conn_set_config(struct dummy_packet_conn *conn,
355 const struct smap *args)
357 const char *pstream = smap_get(args, "pstream");
358 const char *stream = smap_get(args, "stream");
360 if (pstream && stream) {
361 VLOG_WARN("Open failed: both %s and %s are configured",
366 switch (conn->type) {
369 !strcmp(pstream_get_name(conn->u.pconn.pstream), pstream)) {
372 dummy_packet_conn_close(conn);
376 !strcmp(stream_get_name(conn->u.rconn.rstream->stream), stream)) {
379 dummy_packet_conn_close(conn);
389 error = pstream_open(pstream, &conn->u.pconn.pstream, DSCP_DEFAULT);
391 VLOG_WARN("%s: open failed (%s)", pstream, ovs_strerror(error));
393 conn->type = PASSIVE;
399 struct stream *active_stream;
400 struct reconnect *reconnect;
402 reconnect = reconnect_create(time_msec());
403 reconnect_set_name(reconnect, stream);
404 reconnect_set_passive(reconnect, false, time_msec());
405 reconnect_enable(reconnect, time_msec());
406 reconnect_set_backoff(reconnect, 100, INT_MAX);
407 reconnect_set_probe_interval(reconnect, 0);
408 conn->u.rconn.reconnect = reconnect;
411 error = stream_open(stream, &active_stream, DSCP_DEFAULT);
412 conn->u.rconn.rstream = dummy_packet_stream_create(active_stream);
416 reconnect_connected(reconnect, time_msec());
420 reconnect_connecting(reconnect, time_msec());
424 reconnect_connect_failed(reconnect, time_msec(), error);
425 stream_close(active_stream);
426 conn->u.rconn.rstream->stream = NULL;
433 dummy_pconn_run(struct netdev_dummy *dev)
434 OVS_REQUIRES(dev->mutex)
436 struct stream *new_stream;
437 struct dummy_packet_pconn *pconn = &dev->conn.u.pconn;
441 error = pstream_accept(pconn->pstream, &new_stream);
443 struct dummy_packet_stream *s;
445 pconn->streams = xrealloc(pconn->streams,
446 ((pconn->n_streams + 1)
448 s = &pconn->streams[pconn->n_streams++];
449 dummy_packet_stream_init(s, new_stream);
450 } else if (error != EAGAIN) {
451 VLOG_WARN("%s: accept failed (%s)",
452 pstream_get_name(pconn->pstream), ovs_strerror(error));
453 pstream_close(pconn->pstream);
454 pconn->pstream = NULL;
455 dev->conn.type = NONE;
458 for (i = 0; i < pconn->n_streams; i++) {
459 struct dummy_packet_stream *s = &pconn->streams[i];
461 error = dummy_packet_stream_run(dev, s);
463 VLOG_DBG("%s: closing connection (%s)",
464 stream_get_name(s->stream),
465 ovs_retval_to_string(error));
466 dummy_packet_stream_close(s);
467 pconn->streams[i] = pconn->streams[--pconn->n_streams];
473 dummy_rconn_run(struct netdev_dummy *dev)
474 OVS_REQUIRES(dev->mutex)
476 struct dummy_packet_rconn *rconn = &dev->conn.u.rconn;
478 switch (reconnect_run(rconn->reconnect, time_msec())) {
479 case RECONNECT_CONNECT:
483 if (rconn->rstream->stream) {
484 error = stream_connect(rconn->rstream->stream);
486 error = stream_open(reconnect_get_name(rconn->reconnect),
487 &rconn->rstream->stream, DSCP_DEFAULT);
492 reconnect_connected(rconn->reconnect, time_msec());
496 reconnect_connecting(rconn->reconnect, time_msec());
500 reconnect_connect_failed(rconn->reconnect, time_msec(), error);
501 stream_close(rconn->rstream->stream);
502 rconn->rstream->stream = NULL;
508 case RECONNECT_DISCONNECT:
509 case RECONNECT_PROBE:
514 if (reconnect_is_connected(rconn->reconnect)) {
517 err = dummy_packet_stream_run(dev, rconn->rstream);
520 reconnect_disconnected(rconn->reconnect, time_msec(), err);
521 stream_close(rconn->rstream->stream);
522 rconn->rstream->stream = NULL;
528 dummy_packet_conn_run(struct netdev_dummy *dev)
529 OVS_REQUIRES(dev->mutex)
531 switch (dev->conn.type) {
533 dummy_pconn_run(dev);
537 dummy_rconn_run(dev);
547 dummy_packet_conn_wait(struct dummy_packet_conn *conn)
550 switch (conn->type) {
552 pstream_wait(conn->u.pconn.pstream);
553 for (i = 0; i < conn->u.pconn.n_streams; i++) {
554 struct dummy_packet_stream *s = &conn->u.pconn.streams[i];
555 dummy_packet_stream_wait(s);
559 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
560 dummy_packet_stream_wait(conn->u.rconn.rstream);
571 dummy_packet_conn_send(struct dummy_packet_conn *conn,
572 const void *buffer, size_t size)
576 switch (conn->type) {
578 for (i = 0; i < conn->u.pconn.n_streams; i++) {
579 struct dummy_packet_stream *s = &conn->u.pconn.streams[i];
581 dummy_packet_stream_send(s, buffer, size);
582 pstream_wait(conn->u.pconn.pstream);
587 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
588 dummy_packet_stream_send(conn->u.rconn.rstream, buffer, size);
589 dummy_packet_stream_wait(conn->u.rconn.rstream);
599 static enum dummy_netdev_conn_state
600 dummy_netdev_get_conn_state(struct dummy_packet_conn *conn)
602 enum dummy_netdev_conn_state state;
604 if (conn->type == ACTIVE) {
605 if (reconnect_is_connected(conn->u.rconn.reconnect)) {
606 state = CONN_STATE_CONNECTED;
608 state = CONN_STATE_NOT_CONNECTED;
611 state = CONN_STATE_UNKNOWN;
618 netdev_dummy_run(void)
620 struct netdev_dummy *dev;
622 ovs_mutex_lock(&dummy_list_mutex);
623 LIST_FOR_EACH (dev, list_node, &dummy_list) {
624 ovs_mutex_lock(&dev->mutex);
625 dummy_packet_conn_run(dev);
626 ovs_mutex_unlock(&dev->mutex);
628 ovs_mutex_unlock(&dummy_list_mutex);
632 netdev_dummy_wait(void)
634 struct netdev_dummy *dev;
636 ovs_mutex_lock(&dummy_list_mutex);
637 LIST_FOR_EACH (dev, list_node, &dummy_list) {
638 ovs_mutex_lock(&dev->mutex);
639 dummy_packet_conn_wait(&dev->conn);
640 ovs_mutex_unlock(&dev->mutex);
642 ovs_mutex_unlock(&dummy_list_mutex);
645 static struct netdev *
646 netdev_dummy_alloc(void)
648 struct netdev_dummy *netdev = xzalloc(sizeof *netdev);
653 netdev_dummy_construct(struct netdev *netdev_)
655 static atomic_count next_n = ATOMIC_COUNT_INIT(0xaa550000);
656 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
659 n = atomic_count_inc(&next_n);
661 ovs_mutex_init(&netdev->mutex);
662 ovs_mutex_lock(&netdev->mutex);
663 netdev->hwaddr.ea[0] = 0xaa;
664 netdev->hwaddr.ea[1] = 0x55;
665 netdev->hwaddr.ea[2] = n >> 24;
666 netdev->hwaddr.ea[3] = n >> 16;
667 netdev->hwaddr.ea[4] = n >> 8;
668 netdev->hwaddr.ea[5] = n;
671 netdev->ifindex = -EOPNOTSUPP;
672 netdev->requested_n_rxq = netdev_->n_rxq;
673 netdev->requested_n_txq = netdev_->n_txq;
675 dummy_packet_conn_init(&netdev->conn);
677 ovs_list_init(&netdev->rxes);
678 ovs_mutex_unlock(&netdev->mutex);
680 ovs_mutex_lock(&dummy_list_mutex);
681 ovs_list_push_back(&dummy_list, &netdev->list_node);
682 ovs_mutex_unlock(&dummy_list_mutex);
688 netdev_dummy_destruct(struct netdev *netdev_)
690 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
692 ovs_mutex_lock(&dummy_list_mutex);
693 ovs_list_remove(&netdev->list_node);
694 ovs_mutex_unlock(&dummy_list_mutex);
696 ovs_mutex_lock(&netdev->mutex);
697 dummy_packet_conn_close(&netdev->conn);
698 netdev->conn.type = NONE;
700 ovs_mutex_unlock(&netdev->mutex);
701 ovs_mutex_destroy(&netdev->mutex);
705 netdev_dummy_dealloc(struct netdev *netdev_)
707 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
713 netdev_dummy_get_config(const struct netdev *dev, struct smap *args)
715 struct netdev_dummy *netdev = netdev_dummy_cast(dev);
717 ovs_mutex_lock(&netdev->mutex);
719 if (netdev->ifindex >= 0) {
720 smap_add_format(args, "ifindex", "%d", netdev->ifindex);
723 dummy_packet_conn_get_config(&netdev->conn, args);
725 /* 'dummy-pmd' specific config. */
726 if (!netdev_is_pmd(dev)) {
729 smap_add_format(args, "requested_rx_queues", "%d", netdev->requested_n_rxq);
730 smap_add_format(args, "configured_rx_queues", "%d", dev->n_rxq);
731 smap_add_format(args, "requested_tx_queues", "%d", netdev->requested_n_txq);
732 smap_add_format(args, "configured_tx_queues", "%d", dev->n_txq);
735 ovs_mutex_unlock(&netdev->mutex);
740 netdev_dummy_get_addr_list(const struct netdev *netdev_, struct in6_addr **paddr,
741 struct in6_addr **pmask, int *n_addr)
743 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
744 int cnt = 0, i = 0, err = 0;
745 struct in6_addr *addr, *mask;
747 ovs_mutex_lock(&netdev->mutex);
748 if (netdev->address.s_addr != INADDR_ANY) {
752 if (ipv6_addr_is_set(&netdev->ipv6)) {
759 addr = xmalloc(sizeof *addr * cnt);
760 mask = xmalloc(sizeof *mask * cnt);
761 if (netdev->address.s_addr != INADDR_ANY) {
762 in6_addr_set_mapped_ipv4(&addr[i], netdev->address.s_addr);
763 in6_addr_set_mapped_ipv4(&mask[i], netdev->netmask.s_addr);
767 if (ipv6_addr_is_set(&netdev->ipv6)) {
768 memcpy(&addr[i], &netdev->ipv6, sizeof *addr);
769 memcpy(&mask[i], &netdev->ipv6_mask, sizeof *mask);
781 ovs_mutex_unlock(&netdev->mutex);
787 netdev_dummy_set_in4(struct netdev *netdev_, struct in_addr address,
788 struct in_addr netmask)
790 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
792 ovs_mutex_lock(&netdev->mutex);
793 netdev->address = address;
794 netdev->netmask = netmask;
795 netdev_change_seq_changed(netdev_);
796 ovs_mutex_unlock(&netdev->mutex);
802 netdev_dummy_set_in6(struct netdev *netdev_, struct in6_addr *in6,
803 struct in6_addr *mask)
805 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
807 ovs_mutex_lock(&netdev->mutex);
809 netdev->ipv6_mask = *mask;
810 netdev_change_seq_changed(netdev_);
811 ovs_mutex_unlock(&netdev->mutex);
817 netdev_dummy_set_config(struct netdev *netdev_, const struct smap *args)
819 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
823 ovs_mutex_lock(&netdev->mutex);
824 netdev->ifindex = smap_get_int(args, "ifindex", -EOPNOTSUPP);
826 dummy_packet_conn_set_config(&netdev->conn, args);
828 if (netdev->rxq_pcap) {
829 fclose(netdev->rxq_pcap);
831 if (netdev->tx_pcap && netdev->tx_pcap != netdev->rxq_pcap) {
832 fclose(netdev->tx_pcap);
834 netdev->rxq_pcap = netdev->tx_pcap = NULL;
835 pcap = smap_get(args, "pcap");
837 netdev->rxq_pcap = netdev->tx_pcap = ovs_pcap_open(pcap, "ab");
839 const char *rxq_pcap = smap_get(args, "rxq_pcap");
840 const char *tx_pcap = smap_get(args, "tx_pcap");
843 netdev->rxq_pcap = ovs_pcap_open(rxq_pcap, "ab");
846 netdev->tx_pcap = ovs_pcap_open(tx_pcap, "ab");
850 netdev_change_seq_changed(netdev_);
852 /* 'dummy-pmd' specific config. */
853 if (!netdev_->netdev_class->is_pmd) {
857 new_n_rxq = MAX(smap_get_int(args, "n_rxq", netdev->requested_n_rxq), 1);
858 if (new_n_rxq != netdev->requested_n_rxq) {
859 netdev->requested_n_rxq = new_n_rxq;
860 netdev_request_reconfigure(netdev_);
864 ovs_mutex_unlock(&netdev->mutex);
869 netdev_dummy_get_numa_id(const struct netdev *netdev_ OVS_UNUSED)
874 /* Requests the number of tx queues for the dummy PMD interface. */
876 netdev_dummy_set_tx_multiq(struct netdev *netdev_, unsigned int n_txq)
878 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
880 ovs_mutex_lock(&netdev->mutex);
882 if (netdev_->n_txq == n_txq) {
886 netdev->requested_n_txq = n_txq;
887 netdev_request_reconfigure(netdev_);
890 ovs_mutex_unlock(&netdev->mutex);
894 /* Sets the number of tx queues and rx queues for the dummy PMD interface. */
896 netdev_dummy_reconfigure(struct netdev *netdev_)
898 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
900 ovs_mutex_lock(&netdev->mutex);
902 netdev_->n_txq = netdev->requested_n_txq;
903 netdev_->n_rxq = netdev->requested_n_rxq;
905 ovs_mutex_unlock(&netdev->mutex);
909 static struct netdev_rxq *
910 netdev_dummy_rxq_alloc(void)
912 struct netdev_rxq_dummy *rx = xzalloc(sizeof *rx);
917 netdev_dummy_rxq_construct(struct netdev_rxq *rxq_)
919 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
920 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
922 ovs_mutex_lock(&netdev->mutex);
923 ovs_list_push_back(&netdev->rxes, &rx->node);
924 ovs_list_init(&rx->recv_queue);
925 rx->recv_queue_len = 0;
926 rx->seq = seq_create();
927 ovs_mutex_unlock(&netdev->mutex);
933 netdev_dummy_rxq_destruct(struct netdev_rxq *rxq_)
935 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
936 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
938 ovs_mutex_lock(&netdev->mutex);
939 ovs_list_remove(&rx->node);
940 pkt_list_delete(&rx->recv_queue);
941 ovs_mutex_unlock(&netdev->mutex);
942 seq_destroy(rx->seq);
946 netdev_dummy_rxq_dealloc(struct netdev_rxq *rxq_)
948 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
954 netdev_dummy_rxq_recv(struct netdev_rxq *rxq_, struct dp_packet **arr,
957 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
958 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
959 struct dp_packet *packet;
961 ovs_mutex_lock(&netdev->mutex);
962 if (!ovs_list_is_empty(&rx->recv_queue)) {
963 struct pkt_list_node *pkt_node;
965 ASSIGN_CONTAINER(pkt_node, ovs_list_pop_front(&rx->recv_queue), list_node);
966 packet = pkt_node->pkt;
968 rx->recv_queue_len--;
972 ovs_mutex_unlock(&netdev->mutex);
975 if (netdev_is_pmd(&netdev->up)) {
976 /* If 'netdev' is a PMD device, this is called as part of the PMD
977 * thread busy loop. We yield here (without quiescing) for two
980 * - To reduce the CPU utilization during the testsuite
981 * - To give valgrind a chance to switch thread. According
982 * to the valgrind documentation, there's a big lock that
983 * prevents multiple thread from being executed at the same
984 * time. On my system, without this sleep, the pmd threads
985 * testcases fail under valgrind, because ovs-vswitchd becomes
991 ovs_mutex_lock(&netdev->mutex);
992 netdev->stats.rx_packets++;
993 netdev->stats.rx_bytes += dp_packet_size(packet);
994 ovs_mutex_unlock(&netdev->mutex);
996 dp_packet_pad(packet);
1004 netdev_dummy_rxq_wait(struct netdev_rxq *rxq_)
1006 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
1007 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
1008 uint64_t seq = seq_read(rx->seq);
1010 ovs_mutex_lock(&netdev->mutex);
1011 if (!ovs_list_is_empty(&rx->recv_queue)) {
1012 poll_immediate_wake();
1014 seq_wait(rx->seq, seq);
1016 ovs_mutex_unlock(&netdev->mutex);
1020 netdev_dummy_rxq_drain(struct netdev_rxq *rxq_)
1022 struct netdev_rxq_dummy *rx = netdev_rxq_dummy_cast(rxq_);
1023 struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
1025 ovs_mutex_lock(&netdev->mutex);
1026 pkt_list_delete(&rx->recv_queue);
1027 rx->recv_queue_len = 0;
1028 ovs_mutex_unlock(&netdev->mutex);
1030 seq_change(rx->seq);
1036 netdev_dummy_send(struct netdev *netdev, int qid OVS_UNUSED,
1037 struct dp_packet **pkts, int cnt, bool may_steal)
1039 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
1043 for (i = 0; i < cnt; i++) {
1044 const void *buffer = dp_packet_data(pkts[i]);
1045 size_t size = dp_packet_size(pkts[i]);
1047 if (size < ETH_HEADER_LEN) {
1051 const struct eth_header *eth = buffer;
1054 ovs_mutex_lock(&dev->mutex);
1055 max_size = dev->mtu + ETH_HEADER_LEN;
1056 ovs_mutex_unlock(&dev->mutex);
1058 if (eth->eth_type == htons(ETH_TYPE_VLAN)) {
1059 max_size += VLAN_HEADER_LEN;
1061 if (size > max_size) {
1067 ovs_mutex_lock(&dev->mutex);
1068 dev->stats.tx_packets++;
1069 dev->stats.tx_bytes += size;
1071 dummy_packet_conn_send(&dev->conn, buffer, size);
1073 /* Reply to ARP requests for 'dev''s assigned IP address. */
1074 if (dev->address.s_addr) {
1075 struct dp_packet packet;
1078 dp_packet_use_const(&packet, buffer, size);
1079 flow_extract(&packet, &flow);
1080 if (flow.dl_type == htons(ETH_TYPE_ARP)
1081 && flow.nw_proto == ARP_OP_REQUEST
1082 && flow.nw_dst == dev->address.s_addr) {
1083 struct dp_packet *reply = dp_packet_new(0);
1084 compose_arp(reply, ARP_OP_REPLY, dev->hwaddr, flow.dl_src,
1085 false, flow.nw_dst, flow.nw_src);
1086 netdev_dummy_queue_packet(dev, reply, 0);
1091 struct dp_packet packet;
1093 dp_packet_use_const(&packet, buffer, size);
1094 ovs_pcap_write(dev->tx_pcap, &packet);
1095 fflush(dev->tx_pcap);
1098 ovs_mutex_unlock(&dev->mutex);
1102 for (i = 0; i < cnt; i++) {
1103 dp_packet_delete(pkts[i]);
1111 netdev_dummy_set_etheraddr(struct netdev *netdev, const struct eth_addr mac)
1113 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
1115 ovs_mutex_lock(&dev->mutex);
1116 if (!eth_addr_equals(dev->hwaddr, mac)) {
1118 netdev_change_seq_changed(netdev);
1120 ovs_mutex_unlock(&dev->mutex);
1126 netdev_dummy_get_etheraddr(const struct netdev *netdev, struct eth_addr *mac)
1128 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
1130 ovs_mutex_lock(&dev->mutex);
1132 ovs_mutex_unlock(&dev->mutex);
1138 netdev_dummy_get_mtu(const struct netdev *netdev, int *mtup)
1140 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
1142 ovs_mutex_lock(&dev->mutex);
1144 ovs_mutex_unlock(&dev->mutex);
1150 netdev_dummy_set_mtu(const struct netdev *netdev, int mtu)
1152 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
1154 ovs_mutex_lock(&dev->mutex);
1156 ovs_mutex_unlock(&dev->mutex);
1162 netdev_dummy_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
1164 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
1166 ovs_mutex_lock(&dev->mutex);
1167 /* Passing only collected counters */
1168 stats->tx_packets = dev->stats.tx_packets;
1169 stats->tx_bytes = dev->stats.tx_bytes;
1170 stats->rx_packets = dev->stats.rx_packets;
1171 stats->rx_bytes = dev->stats.rx_bytes;
1172 ovs_mutex_unlock(&dev->mutex);
1178 netdev_dummy_get_queue(const struct netdev *netdev OVS_UNUSED,
1179 unsigned int queue_id, struct smap *details OVS_UNUSED)
1181 if (queue_id == 0) {
1189 netdev_dummy_init_queue_stats(struct netdev_queue_stats *stats)
1191 *stats = (struct netdev_queue_stats) {
1192 .tx_bytes = UINT64_MAX,
1193 .tx_packets = UINT64_MAX,
1194 .tx_errors = UINT64_MAX,
1195 .created = LLONG_MIN,
1200 netdev_dummy_get_queue_stats(const struct netdev *netdev OVS_UNUSED,
1201 unsigned int queue_id,
1202 struct netdev_queue_stats *stats)
1204 if (queue_id == 0) {
1205 netdev_dummy_init_queue_stats(stats);
1212 struct netdev_dummy_queue_state {
1213 unsigned int next_queue;
1217 netdev_dummy_queue_dump_start(const struct netdev *netdev OVS_UNUSED,
1220 struct netdev_dummy_queue_state *state = xmalloc(sizeof *state);
1221 state->next_queue = 0;
1227 netdev_dummy_queue_dump_next(const struct netdev *netdev OVS_UNUSED,
1229 unsigned int *queue_id,
1230 struct smap *details OVS_UNUSED)
1232 struct netdev_dummy_queue_state *state = state_;
1233 if (state->next_queue == 0) {
1235 state->next_queue++;
1243 netdev_dummy_queue_dump_done(const struct netdev *netdev OVS_UNUSED,
1251 netdev_dummy_dump_queue_stats(const struct netdev *netdev OVS_UNUSED,
1252 void (*cb)(unsigned int queue_id,
1253 struct netdev_queue_stats *,
1257 struct netdev_queue_stats stats;
1258 netdev_dummy_init_queue_stats(&stats);
1264 netdev_dummy_get_ifindex(const struct netdev *netdev)
1266 struct netdev_dummy *dev = netdev_dummy_cast(netdev);
1269 ovs_mutex_lock(&dev->mutex);
1270 ifindex = dev->ifindex;
1271 ovs_mutex_unlock(&dev->mutex);
1277 netdev_dummy_update_flags__(struct netdev_dummy *netdev,
1278 enum netdev_flags off, enum netdev_flags on,
1279 enum netdev_flags *old_flagsp)
1280 OVS_REQUIRES(netdev->mutex)
1282 if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) {
1286 *old_flagsp = netdev->flags;
1287 netdev->flags |= on;
1288 netdev->flags &= ~off;
1289 if (*old_flagsp != netdev->flags) {
1290 netdev_change_seq_changed(&netdev->up);
1297 netdev_dummy_update_flags(struct netdev *netdev_,
1298 enum netdev_flags off, enum netdev_flags on,
1299 enum netdev_flags *old_flagsp)
1301 struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
1304 ovs_mutex_lock(&netdev->mutex);
1305 error = netdev_dummy_update_flags__(netdev, off, on, old_flagsp);
1306 ovs_mutex_unlock(&netdev->mutex);
1311 /* Helper functions. */
1313 #define NETDEV_DUMMY_CLASS(NAME, PMD, TX_MULTIQ, RECOFIGURE) \
1319 netdev_dummy_wait, \
1321 netdev_dummy_alloc, \
1322 netdev_dummy_construct, \
1323 netdev_dummy_destruct, \
1324 netdev_dummy_dealloc, \
1325 netdev_dummy_get_config, \
1326 netdev_dummy_set_config, \
1327 NULL, /* get_tunnel_config */ \
1328 NULL, /* build header */ \
1329 NULL, /* push header */ \
1330 NULL, /* pop header */ \
1331 netdev_dummy_get_numa_id, \
1334 netdev_dummy_send, /* send */ \
1335 NULL, /* send_wait */ \
1337 netdev_dummy_set_etheraddr, \
1338 netdev_dummy_get_etheraddr, \
1339 netdev_dummy_get_mtu, \
1340 netdev_dummy_set_mtu, \
1341 netdev_dummy_get_ifindex, \
1342 NULL, /* get_carrier */ \
1343 NULL, /* get_carrier_resets */ \
1344 NULL, /* get_miimon */ \
1345 netdev_dummy_get_stats, \
1347 NULL, /* get_features */ \
1348 NULL, /* set_advertisements */ \
1350 NULL, /* set_policing */ \
1351 NULL, /* get_qos_types */ \
1352 NULL, /* get_qos_capabilities */ \
1353 NULL, /* get_qos */ \
1354 NULL, /* set_qos */ \
1355 netdev_dummy_get_queue, \
1356 NULL, /* set_queue */ \
1357 NULL, /* delete_queue */ \
1358 netdev_dummy_get_queue_stats, \
1359 netdev_dummy_queue_dump_start, \
1360 netdev_dummy_queue_dump_next, \
1361 netdev_dummy_queue_dump_done, \
1362 netdev_dummy_dump_queue_stats, \
1364 NULL, /* set_in4 */ \
1365 netdev_dummy_get_addr_list, \
1366 NULL, /* add_router */ \
1367 NULL, /* get_next_hop */ \
1368 NULL, /* get_status */ \
1369 NULL, /* arp_lookup */ \
1371 netdev_dummy_update_flags, \
1374 netdev_dummy_rxq_alloc, \
1375 netdev_dummy_rxq_construct, \
1376 netdev_dummy_rxq_destruct, \
1377 netdev_dummy_rxq_dealloc, \
1378 netdev_dummy_rxq_recv, \
1379 netdev_dummy_rxq_wait, \
1380 netdev_dummy_rxq_drain, \
1383 static const struct netdev_class dummy_class =
1384 NETDEV_DUMMY_CLASS("dummy", false, NULL, NULL);
1386 static const struct netdev_class dummy_pmd_class =
1387 NETDEV_DUMMY_CLASS("dummy-pmd", true,
1388 netdev_dummy_set_tx_multiq,
1389 netdev_dummy_reconfigure);
1392 pkt_list_delete(struct ovs_list *l)
1394 struct pkt_list_node *pkt;
1396 LIST_FOR_EACH_POP(pkt, list_node, l) {
1397 dp_packet_delete(pkt->pkt);
1402 static struct dp_packet *
1403 eth_from_packet_or_flow(const char *s)
1405 enum odp_key_fitness fitness;
1406 struct dp_packet *packet;
1407 struct ofpbuf odp_key;
1411 if (!eth_from_hex(s, &packet)) {
1415 /* Convert string to datapath key.
1417 * It would actually be nicer to parse an OpenFlow-like flow key here, but
1418 * the code for that currently calls exit() on parse error. We have to
1419 * settle for parsing a datapath key for now.
1421 ofpbuf_init(&odp_key, 0);
1422 error = odp_flow_from_string(s, NULL, &odp_key, NULL);
1424 ofpbuf_uninit(&odp_key);
1428 /* Convert odp_key to flow. */
1429 fitness = odp_flow_key_to_flow(odp_key.data, odp_key.size, &flow);
1430 if (fitness == ODP_FIT_ERROR) {
1431 ofpbuf_uninit(&odp_key);
1435 packet = dp_packet_new(0);
1436 flow_compose(packet, &flow);
1438 ofpbuf_uninit(&odp_key);
1443 netdev_dummy_queue_packet__(struct netdev_rxq_dummy *rx, struct dp_packet *packet)
1445 struct pkt_list_node *pkt_node = xmalloc(sizeof *pkt_node);
1447 pkt_node->pkt = packet;
1448 ovs_list_push_back(&rx->recv_queue, &pkt_node->list_node);
1449 rx->recv_queue_len++;
1450 seq_change(rx->seq);
1454 netdev_dummy_queue_packet(struct netdev_dummy *dummy, struct dp_packet *packet,
1456 OVS_REQUIRES(dummy->mutex)
1458 struct netdev_rxq_dummy *rx, *prev;
1460 if (dummy->rxq_pcap) {
1461 ovs_pcap_write(dummy->rxq_pcap, packet);
1462 fflush(dummy->rxq_pcap);
1465 LIST_FOR_EACH (rx, node, &dummy->rxes) {
1466 if (rx->up.queue_id == queue_id &&
1467 rx->recv_queue_len < NETDEV_DUMMY_MAX_QUEUE) {
1469 netdev_dummy_queue_packet__(prev, dp_packet_clone(packet));
1475 netdev_dummy_queue_packet__(prev, packet);
1477 dp_packet_delete(packet);
1482 netdev_dummy_receive(struct unixctl_conn *conn,
1483 int argc, const char *argv[], void *aux OVS_UNUSED)
1485 struct netdev_dummy *dummy_dev;
1486 struct netdev *netdev;
1487 int i, k = 1, rx_qid = 0;
1489 netdev = netdev_from_name(argv[k++]);
1490 if (!netdev || !is_dummy_class(netdev->netdev_class)) {
1491 unixctl_command_reply_error(conn, "no such dummy netdev");
1494 dummy_dev = netdev_dummy_cast(netdev);
1496 ovs_mutex_lock(&dummy_dev->mutex);
1498 if (argc > k + 1 && !strcmp(argv[k], "--qid")) {
1499 rx_qid = strtol(argv[k + 1], NULL, 10);
1500 if (rx_qid < 0 || rx_qid >= netdev->n_rxq) {
1501 unixctl_command_reply_error(conn, "bad rx queue id.");
1507 for (i = k; i < argc; i++) {
1508 struct dp_packet *packet;
1510 packet = eth_from_packet_or_flow(argv[i]);
1512 unixctl_command_reply_error(conn, "bad packet syntax");
1516 netdev_dummy_queue_packet(dummy_dev, packet, rx_qid);
1519 unixctl_command_reply(conn, NULL);
1522 ovs_mutex_unlock(&dummy_dev->mutex);
1524 netdev_close(netdev);
1528 netdev_dummy_set_admin_state__(struct netdev_dummy *dev, bool admin_state)
1529 OVS_REQUIRES(dev->mutex)
1531 enum netdev_flags old_flags;
1534 netdev_dummy_update_flags__(dev, 0, NETDEV_UP, &old_flags);
1536 netdev_dummy_update_flags__(dev, NETDEV_UP, 0, &old_flags);
1541 netdev_dummy_set_admin_state(struct unixctl_conn *conn, int argc,
1542 const char *argv[], void *aux OVS_UNUSED)
1546 if (!strcasecmp(argv[argc - 1], "up")) {
1548 } else if ( !strcasecmp(argv[argc - 1], "down")) {
1551 unixctl_command_reply_error(conn, "Invalid Admin State");
1556 struct netdev *netdev = netdev_from_name(argv[1]);
1557 if (netdev && is_dummy_class(netdev->netdev_class)) {
1558 struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
1560 ovs_mutex_lock(&dummy_dev->mutex);
1561 netdev_dummy_set_admin_state__(dummy_dev, up);
1562 ovs_mutex_unlock(&dummy_dev->mutex);
1564 netdev_close(netdev);
1566 unixctl_command_reply_error(conn, "Unknown Dummy Interface");
1567 netdev_close(netdev);
1571 struct netdev_dummy *netdev;
1573 ovs_mutex_lock(&dummy_list_mutex);
1574 LIST_FOR_EACH (netdev, list_node, &dummy_list) {
1575 ovs_mutex_lock(&netdev->mutex);
1576 netdev_dummy_set_admin_state__(netdev, up);
1577 ovs_mutex_unlock(&netdev->mutex);
1579 ovs_mutex_unlock(&dummy_list_mutex);
1581 unixctl_command_reply(conn, "OK");
1585 display_conn_state__(struct ds *s, const char *name,
1586 enum dummy_netdev_conn_state state)
1588 ds_put_format(s, "%s: ", name);
1591 case CONN_STATE_CONNECTED:
1592 ds_put_cstr(s, "connected\n");
1595 case CONN_STATE_NOT_CONNECTED:
1596 ds_put_cstr(s, "disconnected\n");
1599 case CONN_STATE_UNKNOWN:
1601 ds_put_cstr(s, "unknown\n");
1607 netdev_dummy_conn_state(struct unixctl_conn *conn, int argc,
1608 const char *argv[], void *aux OVS_UNUSED)
1610 enum dummy_netdev_conn_state state = CONN_STATE_UNKNOWN;
1616 const char *dev_name = argv[1];
1617 struct netdev *netdev = netdev_from_name(dev_name);
1619 if (netdev && is_dummy_class(netdev->netdev_class)) {
1620 struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
1622 ovs_mutex_lock(&dummy_dev->mutex);
1623 state = dummy_netdev_get_conn_state(&dummy_dev->conn);
1624 ovs_mutex_unlock(&dummy_dev->mutex);
1626 netdev_close(netdev);
1628 display_conn_state__(&s, dev_name, state);
1630 struct netdev_dummy *netdev;
1632 ovs_mutex_lock(&dummy_list_mutex);
1633 LIST_FOR_EACH (netdev, list_node, &dummy_list) {
1634 ovs_mutex_lock(&netdev->mutex);
1635 state = dummy_netdev_get_conn_state(&netdev->conn);
1636 ovs_mutex_unlock(&netdev->mutex);
1637 if (state != CONN_STATE_UNKNOWN) {
1638 display_conn_state__(&s, netdev->up.name, state);
1641 ovs_mutex_unlock(&dummy_list_mutex);
1644 unixctl_command_reply(conn, ds_cstr(&s));
1649 netdev_dummy_ip4addr(struct unixctl_conn *conn, int argc OVS_UNUSED,
1650 const char *argv[], void *aux OVS_UNUSED)
1652 struct netdev *netdev = netdev_from_name(argv[1]);
1654 if (netdev && is_dummy_class(netdev->netdev_class)) {
1655 struct in_addr ip, mask;
1658 error = ip_parse_masked(argv[2], &ip.s_addr, &mask.s_addr);
1660 netdev_dummy_set_in4(netdev, ip, mask);
1661 unixctl_command_reply(conn, "OK");
1663 unixctl_command_reply_error(conn, error);
1667 unixctl_command_reply_error(conn, "Unknown Dummy Interface");
1670 netdev_close(netdev);
1674 netdev_dummy_ip6addr(struct unixctl_conn *conn, int argc OVS_UNUSED,
1675 const char *argv[], void *aux OVS_UNUSED)
1677 struct netdev *netdev = netdev_from_name(argv[1]);
1679 if (netdev && is_dummy_class(netdev->netdev_class)) {
1680 struct in6_addr ip6;
1684 error = ipv6_parse_cidr(argv[2], &ip6, &plen);
1686 struct in6_addr mask;
1688 mask = ipv6_create_mask(plen);
1689 netdev_dummy_set_in6(netdev, &ip6, &mask);
1690 unixctl_command_reply(conn, "OK");
1692 unixctl_command_reply_error(conn, error);
1695 netdev_close(netdev);
1697 unixctl_command_reply_error(conn, "Unknown Dummy Interface");
1700 netdev_close(netdev);
1705 netdev_dummy_override(const char *type)
1707 if (!netdev_unregister_provider(type)) {
1708 struct netdev_class *class;
1711 class = xmemdup(&dummy_class, sizeof dummy_class);
1712 class->type = xstrdup(type);
1713 error = netdev_register_provider(class);
1715 VLOG_ERR("%s: failed to register netdev provider (%s)",
1716 type, ovs_strerror(error));
1717 free(CONST_CAST(char *, class->type));
1724 netdev_dummy_register(enum dummy_level level)
1726 unixctl_command_register("netdev-dummy/receive",
1727 "name [--qid queue_id] packet|flow...",
1728 2, INT_MAX, netdev_dummy_receive, NULL);
1729 unixctl_command_register("netdev-dummy/set-admin-state",
1730 "[netdev] up|down", 1, 2,
1731 netdev_dummy_set_admin_state, NULL);
1732 unixctl_command_register("netdev-dummy/conn-state",
1734 netdev_dummy_conn_state, NULL);
1735 unixctl_command_register("netdev-dummy/ip4addr",
1736 "[netdev] ipaddr/mask-prefix-len", 2, 2,
1737 netdev_dummy_ip4addr, NULL);
1738 unixctl_command_register("netdev-dummy/ip6addr",
1739 "[netdev] ip6addr", 2, 2,
1740 netdev_dummy_ip6addr, NULL);
1742 if (level == DUMMY_OVERRIDE_ALL) {
1747 netdev_enumerate_types(&types);
1748 SSET_FOR_EACH (type, &types) {
1749 if (strcmp(type, "patch")) {
1750 netdev_dummy_override(type);
1753 sset_destroy(&types);
1754 } else if (level == DUMMY_OVERRIDE_SYSTEM) {
1755 netdev_dummy_override("system");
1757 netdev_register_provider(&dummy_class);
1758 netdev_register_provider(&dummy_pmd_class);
1760 netdev_vport_tunnel_register();