/*
- * Copyright (c) 2010 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 "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 "poll-loop.h"
#include "shash.h"
+#include "sset.h"
+#include "unixctl.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(netdev_dummy);
-struct netdev_dummy_notifier {
- struct netdev_notifier notifier;
- struct list list_node;
- struct shash_node *shash_node;
-};
+#ifdef __FreeBSD__
+#define FREE_BSD 1
+#else
+#define FREE_BSD 0
+#endif
-struct netdev_dev_dummy {
- struct netdev_dev netdev_dev;
+struct netdev_dummy {
+ struct netdev up;
uint8_t hwaddr[ETH_ADDR_LEN];
int mtu;
struct netdev_stats stats;
enum netdev_flags flags;
+ unsigned int change_seq;
+ int ifindex;
+
+ struct list rxes; /* List of child "netdev_rx_dummy"s. */
};
-struct netdev_dummy {
- struct netdev netdev;
+struct netdev_rx_dummy {
+ struct netdev_rx up;
+ struct list node; /* In netdev_dummy's "rxes" list. */
+ struct list recv_queue;
};
-static struct shash netdev_dummy_notifiers =
- SHASH_INITIALIZER(&netdev_dummy_notifiers);
+static struct shash dummy_netdevs = SHASH_INITIALIZER(&dummy_netdevs);
+
+static const struct netdev_rx_class netdev_rx_dummy_class;
+static unixctl_cb_func netdev_dummy_set_admin_state;
static int netdev_dummy_create(const struct netdev_class *, const char *,
- const struct shash *, struct netdev_dev **);
-static void netdev_dummy_poll_notify(const struct netdev *);
+ struct netdev **);
+static void netdev_dummy_poll_notify(struct netdev_dummy *);
static bool
is_dummy_class(const struct netdev_class *class)
return class->create == netdev_dummy_create;
}
-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)
{
- 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);
+ netdev_rx_assert_class(rx, &netdev_rx_dummy_class);
+ return CONTAINER_OF(rx, struct netdev_rx_dummy, up);
}
static int
netdev_dummy_create(const struct netdev_class *class, const char *name,
- const struct shash *args OVS_UNUSED,
- struct netdev_dev **netdev_devp)
+ struct netdev **netdevp)
{
static unsigned int n = 0xaa550000;
- struct netdev_dev_dummy *netdev_dev;
-
- 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;
+ struct netdev_dummy *netdev;
+
+ netdev = xzalloc(sizeof *netdev);
+ netdev_init(&netdev->up, name, class);
+ 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->change_seq = 1;
+ netdev->ifindex = -EOPNOTSUPP;
+ list_init(&netdev->rxes);
+
+ shash_add(&dummy_netdevs, name, netdev);
n++;
- *netdev_devp = &netdev_dev->netdev_dev;
+ *netdevp = &netdev->up;
return 0;
}
static void
-netdev_dummy_destroy(struct netdev_dev *netdev_dev_)
+netdev_dummy_destroy(struct netdev *netdev_)
{
- struct netdev_dev_dummy *netdev_dev = netdev_dev_dummy_cast(netdev_dev_);
+ struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
- free(netdev_dev);
+ shash_find_and_delete(&dummy_netdevs,
+ netdev_get_name(netdev_));
+ free(netdev);
}
static int
-netdev_dummy_open(struct netdev_dev *netdev_dev_, int ethertype OVS_UNUSED,
- 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_);
+
+ if (netdev->ifindex >= 0) {
+ smap_add_format(args, "ifindex", "%d", netdev->ifindex);
+ }
+ return 0;
+}
- netdev = xmalloc(sizeof *netdev);
- netdev_init(&netdev->netdev, netdev_dev_);
+static int
+netdev_dummy_set_config(struct netdev *netdev_, const struct smap *args)
+{
+ struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
- *netdevp = &netdev->netdev;
+ netdev->ifindex = smap_get_int(args, "ifindex", -EOPNOTSUPP);
return 0;
}
-static void
-netdev_dummy_close(struct netdev *netdev_)
+static int
+netdev_dummy_rx_open(struct netdev *netdev_, struct netdev_rx **rxp)
{
struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
- free(netdev);
+ struct netdev_rx_dummy *rx;
+
+ rx = xmalloc(sizeof *rx);
+ netdev_rx_init(&rx->up, &netdev->up, &netdev_rx_dummy_class);
+ list_push_back(&netdev->rxes, &rx->node);
+ list_init(&rx->recv_queue);
+
+ *rxp = &rx->up;
+ return 0;
+}
+
+static int
+netdev_rx_dummy_recv(struct netdev_rx *rx_, void *buffer, size_t size)
+{
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+ struct ofpbuf *packet;
+ size_t packet_size;
+
+ if (list_is_empty(&rx->recv_queue)) {
+ return -EAGAIN;
+ }
+
+ packet = ofpbuf_from_list(list_pop_front(&rx->recv_queue));
+ if (packet->size > size) {
+ return -EMSGSIZE;
+ }
+ packet_size = packet->size;
+
+ memcpy(buffer, packet->data, packet->size);
+ ofpbuf_delete(packet);
+
+ return packet_size;
+}
+
+static void
+netdev_rx_dummy_destroy(struct netdev_rx *rx_)
+{
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+ list_remove(&rx->node);
+ ofpbuf_list_delete(&rx->recv_queue);
+ free(rx);
+}
+
+static void
+netdev_rx_dummy_wait(struct netdev_rx *rx_)
+{
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+ if (!list_is_empty(&rx->recv_queue)) {
+ poll_immediate_wake();
+ }
+}
+
+static int
+netdev_rx_dummy_drain(struct netdev_rx *rx_)
+{
+ struct netdev_rx_dummy *rx = netdev_rx_dummy_cast(rx_);
+ ofpbuf_list_delete(&rx->recv_queue);
+ return 0;
+}
+
+static int
+netdev_dummy_send(struct netdev *netdev, const void *buffer OVS_UNUSED,
+ size_t size)
+{
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += size;
+
+ 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);
if (!eth_addr_equals(dev->hwaddr, mac)) {
memcpy(dev->hwaddr, mac, ETH_ADDR_LEN);
- netdev_dummy_poll_notify(netdev);
+ netdev_dummy_poll_notify(dev);
}
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));
+ const struct netdev_dummy *dev = netdev_dummy_cast(netdev);
memcpy(mac, dev->hwaddr, ETH_ADDR_LEN);
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));
+ const struct netdev_dummy *dev = netdev_dummy_cast(netdev);
*mtup = dev->mtu;
return 0;
}
+static int
+netdev_dummy_set_mtu(const struct netdev *netdev, int mtu)
+{
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+
+ dev->mtu = mtu;
+ 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));
+ const struct netdev_dummy *dev = netdev_dummy_cast(netdev);
*stats = dev->stats;
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);
dev->stats = *stats;
return 0;
}
static int
-netdev_dummy_update_flags(struct netdev *netdev,
+netdev_dummy_get_ifindex(const struct netdev *netdev)
+{
+ struct netdev_dummy *dev = netdev_dummy_cast(netdev);
+
+ return dev->ifindex;
+}
+
+static int
+netdev_dummy_update_flags(struct netdev *netdev_,
enum netdev_flags off, enum netdev_flags on,
enum netdev_flags *old_flagsp)
{
- struct netdev_dev_dummy *dev =
- netdev_dev_dummy_cast(netdev_get_dev(netdev));
+ struct netdev_dummy *netdev = netdev_dummy_cast(netdev_);
if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) {
return EINVAL;
}
- *old_flagsp = dev->flags;
- dev->flags |= on;
- dev->flags &= ~off;
- if (*old_flagsp != dev->flags) {
+ *old_flagsp = netdev->flags;
+ netdev->flags |= on;
+ netdev->flags &= ~off;
+ if (*old_flagsp != netdev->flags) {
netdev_dummy_poll_notify(netdev);
}
return 0;
}
-static int
-netdev_dummy_poll_add(struct netdev *netdev,
- void (*cb)(struct netdev_notifier *), void *aux,
- struct netdev_notifier **notifierp)
-{
- const char *name = netdev_get_name(netdev);
- struct netdev_dummy_notifier *notifier;
- struct list *list;
- struct shash_node *shash_node;
-
- shash_node = shash_find_data(&netdev_dummy_notifiers, name);
- if (!shash_node) {
- list = xmalloc(sizeof *list);
- list_init(list);
- shash_node = shash_add(&netdev_dummy_notifiers, name, list);
- } else {
- list = shash_node->data;
- }
-
- notifier = xmalloc(sizeof *notifier);
- netdev_notifier_init(¬ifier->notifier, netdev, cb, aux);
- list_push_back(list, ¬ifier->list_node);
- notifier->shash_node = shash_node;
-
- *notifierp = ¬ifier->notifier;
-
- return 0;
-}
-
-static void
-netdev_dummy_poll_remove(struct netdev_notifier *notifier_)
+static unsigned int
+netdev_dummy_change_seq(const struct netdev *netdev)
{
- struct netdev_dummy_notifier *notifier =
- CONTAINER_OF(notifier_, struct netdev_dummy_notifier, notifier);
-
- struct list *list;
-
- list = list_remove(¬ifier->list_node);
- if (list_is_empty(list)) {
- shash_delete(&netdev_dummy_notifiers, notifier->shash_node);
- free(list);
- }
-
- free(notifier);
+ return netdev_dummy_cast(netdev)->change_seq;
}
\f
/* Helper functions. */
static void
-netdev_dummy_poll_notify(const struct netdev *netdev)
+netdev_dummy_poll_notify(struct netdev_dummy *dev)
{
- const char *name = netdev_get_name(netdev);
- struct list *list = shash_find_data(&netdev_dummy_notifiers, name);
-
- if (list) {
- struct netdev_dummy_notifier *notifier;
-
- LIST_FOR_EACH (notifier, list_node, list) {
- struct netdev_notifier *n = ¬ifier->notifier;
- n->cb(n);
- }
+ dev->change_seq++;
+ if (!dev->change_seq) {
+ dev->change_seq++;
}
}
netdev_dummy_create,
netdev_dummy_destroy,
- NULL,
+ netdev_dummy_get_config,
+ netdev_dummy_set_config,
+ NULL, /* get_tunnel_config */
- netdev_dummy_open,
- netdev_dummy_close,
+ netdev_dummy_rx_open,
- NULL, /* enumerate */
-
- NULL, /* recv */
- NULL, /* recv_wait */
- NULL, /* drain */
-
- NULL, /* send */
+ netdev_dummy_send, /* send */
NULL, /* send_wait */
netdev_dummy_set_etheraddr,
netdev_dummy_get_etheraddr,
netdev_dummy_get_mtu,
- NULL, /* get_ifindex */
+ netdev_dummy_set_mtu,
+ 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 */
netdev_dummy_update_flags,
- netdev_dummy_poll_add,
- netdev_dummy_poll_remove,
+ netdev_dummy_change_seq
};
+static const struct netdev_rx_class netdev_rx_dummy_class = {
+ netdev_rx_dummy_destroy,
+ netdev_rx_dummy_recv,
+ netdev_rx_dummy_wait,
+ netdev_rx_dummy_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_key_from_string(s, NULL, &odp_key);
+ 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_receive(struct unixctl_conn *conn,
+ int argc, const char *argv[], void *aux OVS_UNUSED)
+{
+ struct netdev_dummy *dummy_dev;
+ int n_listeners;
+ int i;
+
+ dummy_dev = shash_find_data(&dummy_netdevs, argv[1]);
+ if (!dummy_dev) {
+ unixctl_command_reply_error(conn, "no such dummy netdev");
+ return;
+ }
+
+ n_listeners = 0;
+ for (i = 2; i < argc; i++) {
+ struct netdev_rx_dummy *rx;
+ struct ofpbuf *packet;
+
+ packet = eth_from_packet_or_flow(argv[i]);
+ if (!packet) {
+ unixctl_command_reply_error(conn, "bad packet syntax");
+ return;
+ }
+
+ dummy_dev->stats.rx_packets++;
+ dummy_dev->stats.rx_bytes += packet->size;
+
+ n_listeners = 0;
+ LIST_FOR_EACH (rx, node, &dummy_dev->rxes) {
+ struct ofpbuf *copy = ofpbuf_clone(packet);
+ list_push_back(&rx->recv_queue, ©->list_node);
+ n_listeners++;
+ }
+ ofpbuf_delete(packet);
+ }
+
+ if (!n_listeners) {
+ unixctl_command_reply(conn, "packets queued but nobody listened");
+ } else {
+ unixctl_command_reply(conn, "success");
+ }
+}
+
+static void
+netdev_dummy_set_admin_state__(struct netdev_dummy *dev, bool admin_state)
+{
+ enum netdev_flags old_flags;
+
+ if (admin_state) {
+ netdev_dummy_update_flags(&dev->up, 0, NETDEV_UP, &old_flags);
+ } else {
+ netdev_dummy_update_flags(&dev->up, 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_dummy *dummy_dev;
+
+ dummy_dev = shash_find_data(&dummy_netdevs, argv[1]);
+ if (dummy_dev) {
+ netdev_dummy_set_admin_state__(dummy_dev, up);
+ } else {
+ unixctl_command_reply_error(conn, "Unknown Dummy Interface");
+ return;
+ }
+ } else {
+ struct shash_node *node;
+
+ SHASH_FOR_EACH (node, &dummy_netdevs) {
+ netdev_dummy_set_admin_state__(node->data, up);
+ }
+ }
+ 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 (!netdev_unregister_provider(type)) {
+ struct netdev_class *class;
+
+ class = xmalloc(sizeof *class);
+ *class = dummy_class;
+ class->type = xstrdup(type);
+ netdev_register_provider(class);
+ }
+ }
+ sset_destroy(&types);
+ }
netdev_register_provider(&dummy_class);
+
+ if (FREE_BSD) {
+ netdev_vport_tunnel_register();
+ }
}