/*
- * Copyright (c) 2010, 2011 Nicira Networks.
+ * Copyright (c) 2010, 2011, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <errno.h>
+#include "connectivity.h"
+#include "flow.h"
#include "list.h"
#include "netdev-provider.h"
+#include "netdev-vport.h"
+#include "odp-util.h"
+#include "ofp-print.h"
+#include "ofpbuf.h"
#include "packets.h"
+#include "pcap-file.h"
+#include "poll-loop.h"
+#include "seq.h"
#include "shash.h"
+#include "sset.h"
+#include "stream.h"
+#include "unaligned.h"
+#include "timeval.h"
+#include "unixctl.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(netdev_dummy);
-struct netdev_dev_dummy {
- struct netdev_dev netdev_dev;
- uint8_t hwaddr[ETH_ADDR_LEN];
- int mtu;
- struct netdev_stats stats;
- enum netdev_flags flags;
- unsigned int change_seq;
+struct dummy_stream {
+ struct stream *stream;
+ struct ofpbuf rxbuf;
+ struct list txq;
};
+/* Protects 'dummy_list'. */
+static struct ovs_mutex dummy_list_mutex = OVS_MUTEX_INITIALIZER;
+
+/* Contains all 'struct dummy_dev's. */
+static struct list dummy_list OVS_GUARDED_BY(dummy_list_mutex)
+ = LIST_INITIALIZER(&dummy_list);
+
struct netdev_dummy {
- struct netdev netdev;
+ struct netdev up;
+
+ /* In dummy_list. */
+ struct list list_node OVS_GUARDED_BY(dummy_list_mutex);
+
+ /* Protects all members below. */
+ struct ovs_mutex mutex OVS_ACQ_AFTER(dummy_list_mutex);
+
+ uint8_t hwaddr[ETH_ADDR_LEN] OVS_GUARDED;
+ int mtu OVS_GUARDED;
+ struct netdev_stats stats OVS_GUARDED;
+ enum netdev_flags flags OVS_GUARDED;
+ int ifindex OVS_GUARDED;
+
+ struct pstream *pstream OVS_GUARDED;
+ struct dummy_stream *streams OVS_GUARDED;
+ size_t n_streams OVS_GUARDED;
+
+ FILE *tx_pcap, *rx_pcap OVS_GUARDED;
+
+ struct list rxes OVS_GUARDED; /* List of child "netdev_rx_dummy"s. */
+};
+
+/* Max 'recv_queue_len' in struct netdev_dummy. */
+#define NETDEV_DUMMY_MAX_QUEUE 100
+
+struct netdev_rx_dummy {
+ struct netdev_rx up;
+ struct list node; /* In netdev_dummy's "rxes" list. */
+ struct list recv_queue;
+ int recv_queue_len; /* list_size(&recv_queue). */
+ bool listening;
};
-static int netdev_dummy_create(const struct netdev_class *, const char *,
- struct netdev_dev **);
-static void netdev_dummy_poll_notify(const struct netdev *);
+static unixctl_cb_func netdev_dummy_set_admin_state;
+static int netdev_dummy_construct(struct netdev *);
+static void netdev_dummy_queue_packet(struct netdev_dummy *, struct ofpbuf *);
+
+static void dummy_stream_close(struct dummy_stream *);
static bool
is_dummy_class(const struct netdev_class *class)
{
- return class->create == netdev_dummy_create;
+ return class->construct == netdev_dummy_construct;
}
-static struct netdev_dev_dummy *
-netdev_dev_dummy_cast(const struct netdev_dev *netdev_dev)
+static struct netdev_dummy *
+netdev_dummy_cast(const struct netdev *netdev)
{
- assert(is_dummy_class(netdev_dev_get_class(netdev_dev)));
- return CONTAINER_OF(netdev_dev, struct netdev_dev_dummy, netdev_dev);
+ ovs_assert(is_dummy_class(netdev_get_class(netdev)));
+ return CONTAINER_OF(netdev, struct netdev_dummy, up);
}
-static struct netdev_dummy *
-netdev_dummy_cast(const struct netdev *netdev)
+static struct netdev_rx_dummy *
+netdev_rx_dummy_cast(const struct netdev_rx *rx)
+{
+ ovs_assert(is_dummy_class(netdev_get_class(rx->netdev)));
+ return CONTAINER_OF(rx, struct netdev_rx_dummy, up);
+}
+
+static void
+netdev_dummy_run(void)
+{
+ struct netdev_dummy *dev;
+
+ ovs_mutex_lock(&dummy_list_mutex);
+ LIST_FOR_EACH (dev, list_node, &dummy_list) {
+ size_t i;
+
+ ovs_mutex_lock(&dev->mutex);
+
+ if (dev->pstream) {
+ struct stream *new_stream;
+ int error;
+
+ error = pstream_accept(dev->pstream, &new_stream);
+ if (!error) {
+ struct dummy_stream *s;
+
+ dev->streams = xrealloc(dev->streams,
+ ((dev->n_streams + 1)
+ * sizeof *dev->streams));
+ s = &dev->streams[dev->n_streams++];
+ s->stream = new_stream;
+ ofpbuf_init(&s->rxbuf, 2048);
+ list_init(&s->txq);
+ } else if (error != EAGAIN) {
+ VLOG_WARN("%s: accept failed (%s)",
+ pstream_get_name(dev->pstream), ovs_strerror(error));
+ pstream_close(dev->pstream);
+ dev->pstream = NULL;
+ }
+ }
+
+ for (i = 0; i < dev->n_streams; i++) {
+ struct dummy_stream *s = &dev->streams[i];
+ int error = 0;
+ size_t n;
+
+ stream_run(s->stream);
+
+ if (!list_is_empty(&s->txq)) {
+ struct ofpbuf *txbuf;
+ int retval;
+
+ txbuf = ofpbuf_from_list(list_front(&s->txq));
+ retval = stream_send(s->stream, txbuf->data, txbuf->size);
+ if (retval > 0) {
+ ofpbuf_pull(txbuf, retval);
+ if (!txbuf->size) {
+ list_remove(&txbuf->list_node);
+ ofpbuf_delete(txbuf);
+ }
+ } else if (retval != -EAGAIN) {
+ error = -retval;
+ }
+ }
+
+ if (!error) {
+ if (s->rxbuf.size < 2) {
+ n = 2 - s->rxbuf.size;
+ } else {
+ uint16_t frame_len;
+
+ frame_len = ntohs(get_unaligned_be16(s->rxbuf.data));
+ if (frame_len < ETH_HEADER_LEN) {
+ error = EPROTO;
+ n = 0;
+ } else {
+ n = (2 + frame_len) - s->rxbuf.size;
+ }
+ }
+ }
+ if (!error) {
+ int retval;
+
+ ofpbuf_prealloc_tailroom(&s->rxbuf, n);
+ retval = stream_recv(s->stream, ofpbuf_tail(&s->rxbuf), n);
+ if (retval > 0) {
+ s->rxbuf.size += retval;
+ if (retval == n && s->rxbuf.size > 2) {
+ ofpbuf_pull(&s->rxbuf, 2);
+ netdev_dummy_queue_packet(dev,
+ ofpbuf_clone(&s->rxbuf));
+ ofpbuf_clear(&s->rxbuf);
+ }
+ } else if (retval != -EAGAIN) {
+ error = (retval < 0 ? -retval
+ : s->rxbuf.size ? EPROTO
+ : EOF);
+ }
+ }
+
+ if (error) {
+ VLOG_DBG("%s: closing connection (%s)",
+ stream_get_name(s->stream),
+ ovs_retval_to_string(error));
+ dummy_stream_close(&dev->streams[i]);
+ dev->streams[i] = dev->streams[--dev->n_streams];
+ }
+ }
+
+ ovs_mutex_unlock(&dev->mutex);
+ }
+ ovs_mutex_unlock(&dummy_list_mutex);
+}
+
+static void
+dummy_stream_close(struct dummy_stream *s)
+{
+ stream_close(s->stream);
+ ofpbuf_uninit(&s->rxbuf);
+ ofpbuf_list_delete(&s->txq);
+}
+
+static void
+netdev_dummy_wait(void)
+{
+ struct netdev_dummy *dev;
+
+ ovs_mutex_lock(&dummy_list_mutex);
+ LIST_FOR_EACH (dev, list_node, &dummy_list) {
+ size_t i;
+
+ ovs_mutex_lock(&dev->mutex);
+ if (dev->pstream) {
+ pstream_wait(dev->pstream);
+ }
+ for (i = 0; i < dev->n_streams; i++) {
+ struct dummy_stream *s = &dev->streams[i];
+
+ stream_run_wait(s->stream);
+ if (!list_is_empty(&s->txq)) {
+ stream_send_wait(s->stream);
+ }
+ stream_recv_wait(s->stream);
+ }
+ ovs_mutex_unlock(&dev->mutex);
+ }
+ ovs_mutex_unlock(&dummy_list_mutex);
+}
+
+static struct netdev *
+netdev_dummy_alloc(void)
{
- struct netdev_dev *netdev_dev = netdev_get_dev(netdev);
- assert(is_dummy_class(netdev_dev_get_class(netdev_dev)));
- return CONTAINER_OF(netdev, struct netdev_dummy, netdev);
+ struct netdev_dummy *netdev = xzalloc(sizeof *netdev);
+ return &netdev->up;
}
static int
-netdev_dummy_create(const struct netdev_class *class, const char *name,
- struct netdev_dev **netdev_devp)
+netdev_dummy_construct(struct netdev *netdev_)
{
- static unsigned int n = 0xaa550000;
- struct netdev_dev_dummy *netdev_dev;
+ static atomic_uint next_n = ATOMIC_VAR_INIT(0xaa550000);
+ struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
+ unsigned int n;
+
+ atomic_add(&next_n, 1, &n);
+
+ ovs_mutex_init(&netdev->mutex);
+ ovs_mutex_lock(&netdev->mutex);
+ netdev->hwaddr[0] = 0xaa;
+ netdev->hwaddr[1] = 0x55;
+ netdev->hwaddr[2] = n >> 24;
+ netdev->hwaddr[3] = n >> 16;
+ netdev->hwaddr[4] = n >> 8;
+ netdev->hwaddr[5] = n;
+ netdev->mtu = 1500;
+ netdev->flags = 0;
+ netdev->ifindex = -EOPNOTSUPP;
- netdev_dev = xzalloc(sizeof *netdev_dev);
- netdev_dev_init(&netdev_dev->netdev_dev, name, class);
- netdev_dev->hwaddr[0] = 0xaa;
- netdev_dev->hwaddr[1] = 0x55;
- netdev_dev->hwaddr[2] = n >> 24;
- netdev_dev->hwaddr[3] = n >> 16;
- netdev_dev->hwaddr[4] = n >> 8;
- netdev_dev->hwaddr[5] = n;
- netdev_dev->mtu = 1500;
- netdev_dev->flags = 0;
- netdev_dev->change_seq = 1;
+ netdev->pstream = NULL;
+ netdev->streams = NULL;
+ netdev->n_streams = 0;
- n++;
+ list_init(&netdev->rxes);
+ ovs_mutex_unlock(&netdev->mutex);
- *netdev_devp = &netdev_dev->netdev_dev;
+ ovs_mutex_lock(&dummy_list_mutex);
+ list_push_back(&dummy_list, &netdev->list_node);
+ ovs_mutex_unlock(&dummy_list_mutex);
return 0;
}
static void
-netdev_dummy_destroy(struct netdev_dev *netdev_dev_)
+netdev_dummy_destruct(struct netdev *netdev_)
{
- struct netdev_dev_dummy *netdev_dev = netdev_dev_dummy_cast(netdev_dev_);
+ struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
+ size_t i;
+
+ ovs_mutex_lock(&dummy_list_mutex);
+ list_remove(&netdev->list_node);
+ ovs_mutex_unlock(&dummy_list_mutex);
+
+ ovs_mutex_lock(&netdev->mutex);
+ pstream_close(netdev->pstream);
+ for (i = 0; i < netdev->n_streams; i++) {
+ dummy_stream_close(&netdev->streams[i]);
+ }
+ free(netdev->streams);
+ ovs_mutex_unlock(&netdev->mutex);
+ ovs_mutex_destroy(&netdev->mutex);
+}
+
+static void
+netdev_dummy_dealloc(struct netdev *netdev_)
+{
+ struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
- free(netdev_dev);
+ free(netdev);
}
static int
-netdev_dummy_open(struct netdev_dev *netdev_dev_, struct netdev **netdevp)
+netdev_dummy_get_config(const struct netdev *netdev_, struct smap *args)
{
- struct netdev_dummy *netdev;
+ struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
- netdev = xmalloc(sizeof *netdev);
- netdev_init(&netdev->netdev, netdev_dev_);
+ ovs_mutex_lock(&netdev->mutex);
- *netdevp = &netdev->netdev;
+ if (netdev->ifindex >= 0) {
+ smap_add_format(args, "ifindex", "%d", netdev->ifindex);
+ }
+
+ if (netdev->pstream) {
+ smap_add(args, "pstream", pstream_get_name(netdev->pstream));
+ }
+
+ ovs_mutex_unlock(&netdev->mutex);
return 0;
}
-static void
-netdev_dummy_close(struct netdev *netdev_)
+static int
+netdev_dummy_set_config(struct netdev *netdev_, const struct smap *args)
{
struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
- free(netdev);
+ const char *pstream;
+ const char *pcap;
+
+ ovs_mutex_lock(&netdev->mutex);
+ netdev->ifindex = smap_get_int(args, "ifindex", -EOPNOTSUPP);
+
+ pstream = smap_get(args, "pstream");
+ if (!pstream
+ || !netdev->pstream
+ || strcmp(pstream_get_name(netdev->pstream), pstream)) {
+ pstream_close(netdev->pstream);
+ netdev->pstream = NULL;
+
+ if (pstream) {
+ int error;
+
+ error = pstream_open(pstream, &netdev->pstream, DSCP_DEFAULT);
+ if (error) {
+ VLOG_WARN("%s: open failed (%s)",
+ pstream, ovs_strerror(error));
+ }
+ }
+ }
+
+ if (netdev->rx_pcap) {
+ fclose(netdev->rx_pcap);
+ }
+ if (netdev->tx_pcap && netdev->tx_pcap != netdev->rx_pcap) {
+ fclose(netdev->tx_pcap);
+ }
+ netdev->rx_pcap = netdev->tx_pcap = NULL;
+ pcap = smap_get(args, "pcap");
+ if (pcap) {
+ netdev->rx_pcap = netdev->tx_pcap = pcap_open(pcap, "ab");
+ } else {
+ const char *rx_pcap = smap_get(args, "rx_pcap");
+ const char *tx_pcap = smap_get(args, "tx_pcap");
+
+ if (rx_pcap) {
+ netdev->rx_pcap = pcap_open(rx_pcap, "ab");
+ }
+ if (tx_pcap) {
+ netdev->tx_pcap = pcap_open(tx_pcap, "ab");
+ }
+ }
+
+ ovs_mutex_unlock(&netdev->mutex);
+
+ return 0;
+}
+
+static struct netdev_rx *
+netdev_dummy_rx_alloc(void)
+{
+ struct netdev_rx_dummy *rx = xzalloc(sizeof *rx);
+ return &rx->up;
+}
+
+static int
+netdev_dummy_rx_construct(struct netdev_rx *rx_)
+{
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+ struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
+
+ ovs_mutex_lock(&netdev->mutex);
+ list_push_back(&netdev->rxes, &rx->node);
+ list_init(&rx->recv_queue);
+ rx->recv_queue_len = 0;
+ ovs_mutex_unlock(&netdev->mutex);
+
+ return 0;
+}
+
+static void
+netdev_dummy_rx_destruct(struct netdev_rx *rx_)
+{
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+ struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
+
+ ovs_mutex_lock(&netdev->mutex);
+ list_remove(&rx->node);
+ ofpbuf_list_delete(&rx->recv_queue);
+ ovs_mutex_unlock(&netdev->mutex);
+}
+
+static void
+netdev_dummy_rx_dealloc(struct netdev_rx *rx_)
+{
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+
+ free(rx);
+}
+
+static int
+netdev_dummy_rx_recv(struct netdev_rx *rx_, void *buffer, size_t size)
+{
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+ struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
+ struct ofpbuf *packet;
+ int retval;
+
+ ovs_mutex_lock(&netdev->mutex);
+ if (!list_is_empty(&rx->recv_queue)) {
+ packet = ofpbuf_from_list(list_pop_front(&rx->recv_queue));
+ rx->recv_queue_len--;
+ } else {
+ packet = NULL;
+ }
+ ovs_mutex_unlock(&netdev->mutex);
+
+ if (!packet) {
+ return -EAGAIN;
+ }
+
+ if (packet->size <= size) {
+ memcpy(buffer, packet->data, packet->size);
+ retval = packet->size;
+
+ ovs_mutex_lock(&netdev->mutex);
+ netdev->stats.rx_packets++;
+ netdev->stats.rx_bytes += packet->size;
+ ovs_mutex_unlock(&netdev->mutex);
+ } else {
+ retval = -EMSGSIZE;
+ }
+ ofpbuf_delete(packet);
+
+ return retval;
+}
+
+static void
+netdev_dummy_rx_wait(struct netdev_rx *rx_)
+{
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+ struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
+
+ ovs_mutex_lock(&netdev->mutex);
+ if (!list_is_empty(&rx->recv_queue)) {
+ poll_immediate_wake();
+ }
+ ovs_mutex_unlock(&netdev->mutex);
}
static int
-netdev_dummy_listen(struct netdev *netdev_ OVS_UNUSED)
+netdev_dummy_rx_drain(struct netdev_rx *rx_)
{
- /* It's OK to listen on a dummy device. It just never receives any
- * packets. */
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+ struct netdev_dummy *netdev = netdev_dummy_cast(rx->up.netdev);
+
+ ovs_mutex_lock(&netdev->mutex);
+ ofpbuf_list_delete(&rx->recv_queue);
+ rx->recv_queue_len = 0;
+ ovs_mutex_unlock(&netdev->mutex);
+
return 0;
}
static int
-netdev_dummy_recv(struct netdev *netdev_ OVS_UNUSED,
- void *buffer OVS_UNUSED, size_t size OVS_UNUSED)
+netdev_dummy_send(struct netdev *netdev, const void *buffer, size_t size)
{
- /* A dummy device never receives any packets. */
- return -EAGAIN;
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+ size_t i;
+
+ if (size < ETH_HEADER_LEN) {
+ return EMSGSIZE;
+ } else {
+ const struct eth_header *eth = buffer;
+ int max_size;
+
+ ovs_mutex_lock(&dev->mutex);
+ max_size = dev->mtu + ETH_HEADER_LEN;
+ ovs_mutex_unlock(&dev->mutex);
+
+ if (eth->eth_type == htons(ETH_TYPE_VLAN)) {
+ max_size += VLAN_HEADER_LEN;
+ }
+ if (size > max_size) {
+ return EMSGSIZE;
+ }
+ }
+
+ ovs_mutex_lock(&dev->mutex);
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += size;
+
+ if (dev->tx_pcap) {
+ struct ofpbuf packet;
+
+ ofpbuf_use_const(&packet, buffer, size);
+ pcap_write(dev->tx_pcap, &packet);
+ fflush(dev->tx_pcap);
+ }
+
+ for (i = 0; i < dev->n_streams; i++) {
+ struct dummy_stream *s = &dev->streams[i];
+
+ if (list_size(&s->txq) < NETDEV_DUMMY_MAX_QUEUE) {
+ struct ofpbuf *b;
+
+ b = ofpbuf_clone_data_with_headroom(buffer, size, 2);
+ put_unaligned_be16(ofpbuf_push_uninit(b, 2), htons(size));
+ list_push_back(&s->txq, &b->list_node);
+ }
+ }
+ ovs_mutex_unlock(&dev->mutex);
+
+ return 0;
}
static int
netdev_dummy_set_etheraddr(struct netdev *netdev,
const uint8_t mac[ETH_ADDR_LEN])
{
- struct netdev_dev_dummy *dev =
- netdev_dev_dummy_cast(netdev_get_dev(netdev));
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+ ovs_mutex_lock(&dev->mutex);
if (!eth_addr_equals(dev->hwaddr, mac)) {
memcpy(dev->hwaddr, mac, ETH_ADDR_LEN);
- netdev_dummy_poll_notify(netdev);
+ seq_change(connectivity_seq_get());
}
+ ovs_mutex_unlock(&dev->mutex);
return 0;
}
netdev_dummy_get_etheraddr(const struct netdev *netdev,
uint8_t mac[ETH_ADDR_LEN])
{
- const struct netdev_dev_dummy *dev =
- netdev_dev_dummy_cast(netdev_get_dev(netdev));
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+ ovs_mutex_lock(&dev->mutex);
memcpy(mac, dev->hwaddr, ETH_ADDR_LEN);
+ ovs_mutex_unlock(&dev->mutex);
+
return 0;
}
static int
netdev_dummy_get_mtu(const struct netdev *netdev, int *mtup)
{
- const struct netdev_dev_dummy *dev =
- netdev_dev_dummy_cast(netdev_get_dev(netdev));
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+ ovs_mutex_lock(&dev->mutex);
*mtup = dev->mtu;
+ ovs_mutex_unlock(&dev->mutex);
+
return 0;
}
static int
netdev_dummy_set_mtu(const struct netdev *netdev, int mtu)
{
- struct netdev_dev_dummy *dev =
- netdev_dev_dummy_cast(netdev_get_dev(netdev));
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+ ovs_mutex_lock(&dev->mutex);
dev->mtu = mtu;
+ ovs_mutex_unlock(&dev->mutex);
+
return 0;
}
static int
netdev_dummy_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
{
- const struct netdev_dev_dummy *dev =
- netdev_dev_dummy_cast(netdev_get_dev(netdev));
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+ ovs_mutex_lock(&dev->mutex);
*stats = dev->stats;
+ ovs_mutex_unlock(&dev->mutex);
+
return 0;
}
static int
netdev_dummy_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
{
- struct netdev_dev_dummy *dev =
- netdev_dev_dummy_cast(netdev_get_dev(netdev));
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+ ovs_mutex_lock(&dev->mutex);
dev->stats = *stats;
+ ovs_mutex_unlock(&dev->mutex);
+
return 0;
}
static int
-netdev_dummy_update_flags(struct netdev *netdev,
- enum netdev_flags off, enum netdev_flags on,
- enum netdev_flags *old_flagsp)
+netdev_dummy_get_ifindex(const struct netdev *netdev)
{
- struct netdev_dev_dummy *dev =
- netdev_dev_dummy_cast(netdev_get_dev(netdev));
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+ int ifindex;
+ ovs_mutex_lock(&dev->mutex);
+ ifindex = dev->ifindex;
+ ovs_mutex_unlock(&dev->mutex);
+
+ return ifindex;
+}
+
+static int
+netdev_dummy_update_flags__(struct netdev_dummy *netdev,
+ enum netdev_flags off, enum netdev_flags on,
+ enum netdev_flags *old_flagsp)
+ OVS_REQUIRES(netdev->mutex)
+{
if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) {
return EINVAL;
}
- *old_flagsp = dev->flags;
- dev->flags |= on;
- dev->flags &= ~off;
- if (*old_flagsp != dev->flags) {
- netdev_dummy_poll_notify(netdev);
+ *old_flagsp = netdev->flags;
+ netdev->flags |= on;
+ netdev->flags &= ~off;
+ if (*old_flagsp != netdev->flags) {
+ seq_change(connectivity_seq_get());
}
+
return 0;
}
-static unsigned int
-netdev_dummy_change_seq(const struct netdev *netdev)
+static int
+netdev_dummy_update_flags(struct netdev *netdev_,
+ enum netdev_flags off, enum netdev_flags on,
+ enum netdev_flags *old_flagsp)
{
- return netdev_dev_dummy_cast(netdev_get_dev(netdev))->change_seq;
-}
-\f
-/* Helper functions. */
+ struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
+ int error;
-static void
-netdev_dummy_poll_notify(const struct netdev *netdev)
-{
- struct netdev_dev_dummy *dev =
- netdev_dev_dummy_cast(netdev_get_dev(netdev));
+ ovs_mutex_lock(&netdev->mutex);
+ error = netdev_dummy_update_flags__(netdev, off, on, old_flagsp);
+ ovs_mutex_unlock(&netdev->mutex);
- dev->change_seq++;
- if (!dev->change_seq) {
- dev->change_seq++;
- }
+ return error;
}
+\f
+/* Helper functions. */
static const struct netdev_class dummy_class = {
"dummy",
NULL, /* init */
- NULL, /* run */
- NULL, /* wait */
-
- netdev_dummy_create,
- netdev_dummy_destroy,
- NULL, /* get_config */
- NULL, /* set_config */
-
- netdev_dummy_open,
- netdev_dummy_close,
-
- NULL, /* enumerate */
-
- netdev_dummy_listen, /* listen */
- netdev_dummy_recv, /* recv */
- NULL, /* recv_wait */
- NULL, /* drain */
-
- NULL, /* send */
+ netdev_dummy_run,
+ netdev_dummy_wait,
+
+ netdev_dummy_alloc,
+ netdev_dummy_construct,
+ netdev_dummy_destruct,
+ netdev_dummy_dealloc,
+ netdev_dummy_get_config,
+ netdev_dummy_set_config,
+ NULL, /* get_tunnel_config */
+
+ netdev_dummy_send, /* send */
NULL, /* send_wait */
netdev_dummy_set_etheraddr,
netdev_dummy_get_etheraddr,
netdev_dummy_get_mtu,
netdev_dummy_set_mtu,
- NULL, /* get_ifindex */
+ netdev_dummy_get_ifindex,
NULL, /* get_carrier */
+ NULL, /* get_carrier_resets */
NULL, /* get_miimon */
netdev_dummy_get_stats,
netdev_dummy_set_stats,
NULL, /* get_features */
NULL, /* set_advertisements */
- NULL, /* get_vlan_vid */
NULL, /* set_policing */
NULL, /* get_qos_types */
NULL, /* set_queue */
NULL, /* delete_queue */
NULL, /* get_queue_stats */
- NULL, /* dump_queues */
+ NULL, /* queue_dump_start */
+ NULL, /* queue_dump_next */
+ NULL, /* queue_dump_done */
NULL, /* dump_queue_stats */
NULL, /* get_in4 */
netdev_dummy_update_flags,
- netdev_dummy_change_seq
+ netdev_dummy_rx_alloc,
+ netdev_dummy_rx_construct,
+ netdev_dummy_rx_destruct,
+ netdev_dummy_rx_dealloc,
+ netdev_dummy_rx_recv,
+ netdev_dummy_rx_wait,
+ netdev_dummy_rx_drain,
};
+static struct ofpbuf *
+eth_from_packet_or_flow(const char *s)
+{
+ enum odp_key_fitness fitness;
+ struct ofpbuf *packet;
+ struct ofpbuf odp_key;
+ struct flow flow;
+ int error;
+
+ if (!eth_from_hex(s, &packet)) {
+ return packet;
+ }
+
+ /* Convert string to datapath key.
+ *
+ * It would actually be nicer to parse an OpenFlow-like flow key here, but
+ * the code for that currently calls exit() on parse error. We have to
+ * settle for parsing a datapath key for now.
+ */
+ ofpbuf_init(&odp_key, 0);
+ error = odp_flow_from_string(s, NULL, &odp_key, NULL);
+ if (error) {
+ ofpbuf_uninit(&odp_key);
+ return NULL;
+ }
+
+ /* Convert odp_key to flow. */
+ fitness = odp_flow_key_to_flow(odp_key.data, odp_key.size, &flow);
+ if (fitness == ODP_FIT_ERROR) {
+ ofpbuf_uninit(&odp_key);
+ return NULL;
+ }
+
+ packet = ofpbuf_new(0);
+ flow_compose(packet, &flow);
+
+ ofpbuf_uninit(&odp_key);
+ return packet;
+}
+
+static void
+netdev_dummy_queue_packet__(struct netdev_rx_dummy *rx, struct ofpbuf *packet)
+{
+ list_push_back(&rx->recv_queue, &packet->list_node);
+ rx->recv_queue_len++;
+}
+
+static void
+netdev_dummy_queue_packet(struct netdev_dummy *dummy, struct ofpbuf *packet)
+ OVS_REQUIRES(dummy->mutex)
+{
+ struct netdev_rx_dummy *rx, *prev;
+
+ if (dummy->rx_pcap) {
+ pcap_write(dummy->rx_pcap, packet);
+ fflush(dummy->rx_pcap);
+ }
+ prev = NULL;
+ LIST_FOR_EACH (rx, node, &dummy->rxes) {
+ if (rx->recv_queue_len < NETDEV_DUMMY_MAX_QUEUE) {
+ if (prev) {
+ netdev_dummy_queue_packet__(prev, ofpbuf_clone(packet));
+ }
+ prev = rx;
+ }
+ }
+ if (prev) {
+ netdev_dummy_queue_packet__(prev, packet);
+ } else {
+ ofpbuf_delete(packet);
+ }
+}
+
+static void
+netdev_dummy_receive(struct unixctl_conn *conn,
+ int argc, const char *argv[], void *aux OVS_UNUSED)
+{
+ struct netdev_dummy *dummy_dev;
+ struct netdev *netdev;
+ int i;
+
+ netdev = netdev_from_name(argv[1]);
+ if (!netdev || !is_dummy_class(netdev->netdev_class)) {
+ unixctl_command_reply_error(conn, "no such dummy netdev");
+ goto exit;
+ }
+ dummy_dev = netdev_dummy_cast(netdev);
+
+ for (i = 2; i < argc; i++) {
+ struct ofpbuf *packet;
+
+ packet = eth_from_packet_or_flow(argv[i]);
+ if (!packet) {
+ unixctl_command_reply_error(conn, "bad packet syntax");
+ goto exit;
+ }
+
+ ovs_mutex_lock(&dummy_dev->mutex);
+ netdev_dummy_queue_packet(dummy_dev, packet);
+ ovs_mutex_unlock(&dummy_dev->mutex);
+ }
+
+ unixctl_command_reply(conn, NULL);
+
+exit:
+ netdev_close(netdev);
+}
+
+static void
+netdev_dummy_set_admin_state__(struct netdev_dummy *dev, bool admin_state)
+ OVS_REQUIRES(dev->mutex)
+{
+ enum netdev_flags old_flags;
+
+ if (admin_state) {
+ netdev_dummy_update_flags__(dev, 0, NETDEV_UP, &old_flags);
+ } else {
+ netdev_dummy_update_flags__(dev, NETDEV_UP, 0, &old_flags);
+ }
+}
+
+static void
+netdev_dummy_set_admin_state(struct unixctl_conn *conn, int argc,
+ const char *argv[], void *aux OVS_UNUSED)
+{
+ bool up;
+
+ if (!strcasecmp(argv[argc - 1], "up")) {
+ up = true;
+ } else if ( !strcasecmp(argv[argc - 1], "down")) {
+ up = false;
+ } else {
+ unixctl_command_reply_error(conn, "Invalid Admin State");
+ return;
+ }
+
+ if (argc > 2) {
+ struct netdev *netdev = netdev_from_name(argv[1]);
+ if (netdev && is_dummy_class(netdev->netdev_class)) {
+ struct netdev_dummy *dummy_dev = netdev_dummy_cast(netdev);
+
+ ovs_mutex_lock(&dummy_dev->mutex);
+ netdev_dummy_set_admin_state__(dummy_dev, up);
+ ovs_mutex_unlock(&dummy_dev->mutex);
+
+ netdev_close(netdev);
+ } else {
+ unixctl_command_reply_error(conn, "Unknown Dummy Interface");
+ netdev_close(netdev);
+ return;
+ }
+ } else {
+ struct netdev_dummy *netdev;
+
+ ovs_mutex_lock(&dummy_list_mutex);
+ LIST_FOR_EACH (netdev, list_node, &dummy_list) {
+ ovs_mutex_lock(&netdev->mutex);
+ netdev_dummy_set_admin_state__(netdev, up);
+ ovs_mutex_unlock(&netdev->mutex);
+ }
+ ovs_mutex_unlock(&dummy_list_mutex);
+ }
+ unixctl_command_reply(conn, "OK");
+}
+
void
-netdev_dummy_register(void)
+netdev_dummy_register(bool override)
{
+ unixctl_command_register("netdev-dummy/receive", "NAME PACKET|FLOW...",
+ 2, INT_MAX, netdev_dummy_receive, NULL);
+ unixctl_command_register("netdev-dummy/set-admin-state",
+ "[netdev] up|down", 1, 2,
+ netdev_dummy_set_admin_state, NULL);
+
+ if (override) {
+ struct sset types;
+ const char *type;
+
+ sset_init(&types);
+ netdev_enumerate_types(&types);
+ SSET_FOR_EACH (type, &types) {
+ if (!strcmp(type, "patch")) {
+ continue;
+ }
+ if (!netdev_unregister_provider(type)) {
+ struct netdev_class *class;
+ int error;
+
+ class = xmemdup(&dummy_class, sizeof dummy_class);
+ class->type = xstrdup(type);
+ error = netdev_register_provider(class);
+ if (error) {
+ VLOG_ERR("%s: failed to register netdev provider (%s)",
+ type, ovs_strerror(error));
+ free(CONST_CAST(char *, class->type));
+ free(class);
+ }
+ }
+ }
+ sset_destroy(&types);
+ }
netdev_register_provider(&dummy_class);
+
+ netdev_vport_tunnel_register();
}
projects / cascardo / ovs.git / blobdiff