--- /dev/null
+/*
+ * Copyright (c) 2010, 2011, 2012 Nicira Networks.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <errno.h>
+
+#include "flow.h"
+#include "list.h"
+#include "netdev-provider.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 "socket-util.h"
+#include "vlog.h"
+
+VLOG_DEFINE_THIS_MODULE(netdev_tunnel);
+
+struct netdev_dev_tunnel {
+ struct netdev_dev netdev_dev;
+ uint8_t hwaddr[ETH_ADDR_LEN];
+ struct netdev_stats stats;
+ enum netdev_flags flags;
+ int sockfd;
+ struct sockaddr_in local_addr;
+ struct sockaddr_in remote_addr;
+ bool valid_remote_ip;
+ bool valid_remote_port;
+ bool connected;
+ unsigned int change_seq;
+};
+
+struct netdev_tunnel {
+ struct netdev netdev;
+} ;
+
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
+
+static struct shash tunnel_netdev_devs = SHASH_INITIALIZER(&tunnel_netdev_devs);
+
+static int netdev_tunnel_create(const struct netdev_class *, const char *,
+ struct netdev_dev **);
+static void netdev_tunnel_update_seq(struct netdev_dev_tunnel *);
+
+static bool
+is_tunnel_class(const struct netdev_class *class)
+{
+ return class->create == netdev_tunnel_create;
+}
+
+static struct netdev_dev_tunnel *
+netdev_dev_tunnel_cast(const struct netdev_dev *netdev_dev)
+{
+ assert(is_tunnel_class(netdev_dev_get_class(netdev_dev)));
+ return CONTAINER_OF(netdev_dev, struct netdev_dev_tunnel, netdev_dev);
+}
+
+static struct netdev_tunnel *
+netdev_tunnel_cast(const struct netdev *netdev)
+{
+ struct netdev_dev *netdev_dev = netdev_get_dev(netdev);
+ assert(is_tunnel_class(netdev_dev_get_class(netdev_dev)));
+ return CONTAINER_OF(netdev, struct netdev_tunnel, netdev);
+}
+
+static int
+netdev_tunnel_create(const struct netdev_class *class, const char *name,
+ struct netdev_dev **netdev_devp)
+{
+ static unsigned int n = 0xaa550000;
+ struct netdev_dev_tunnel *netdev_dev;
+ int error;
+
+ netdev_dev = xzalloc(sizeof *netdev_dev);
+ netdev_dev_init(&netdev_dev->netdev_dev, name, class);
+ netdev_dev->hwaddr[0] = 0x55;
+ netdev_dev->hwaddr[1] = 0xaa;
+ 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->flags = 0;
+ netdev_dev->change_seq = 1;
+ memset(&netdev_dev->remote_addr, 0, sizeof(netdev_dev->remote_addr));
+ netdev_dev->valid_remote_ip = false;
+ netdev_dev->valid_remote_port = false;
+ netdev_dev->connected = false;
+
+
+ netdev_dev->sockfd = inet_open_passive(SOCK_DGRAM, "", 0, &netdev_dev->local_addr, 0);
+ if (netdev_dev->sockfd < 0) {
+ error = netdev_dev->sockfd;
+ goto error;
+ }
+
+
+ shash_add(&tunnel_netdev_devs, name, netdev_dev);
+
+ n++;
+
+ *netdev_devp = &netdev_dev->netdev_dev;
+
+ VLOG_DBG("tunnel_create: name=%s, fd=%d, port=%d", name, netdev_dev->sockfd, netdev_dev->local_addr.sin_port);
+
+ return 0;
+
+error:
+ free(netdev_dev);
+ return error;
+}
+
+static void
+netdev_tunnel_destroy(struct netdev_dev *netdev_dev_)
+{
+ struct netdev_dev_tunnel *netdev_dev = netdev_dev_tunnel_cast(netdev_dev_);
+
+ if (netdev_dev->sockfd != -1)
+ close(netdev_dev->sockfd);
+
+ shash_find_and_delete(&tunnel_netdev_devs,
+ netdev_dev_get_name(netdev_dev_));
+ free(netdev_dev);
+}
+
+static int
+netdev_tunnel_open(struct netdev_dev *netdev_dev_, struct netdev **netdevp)
+{
+ struct netdev_tunnel *netdev;
+
+ netdev = xmalloc(sizeof *netdev);
+ netdev_init(&netdev->netdev, netdev_dev_);
+
+ *netdevp = &netdev->netdev;
+ return 0;
+}
+
+static void
+netdev_tunnel_close(struct netdev *netdev_)
+{
+ struct netdev_tunnel *netdev = netdev_tunnel_cast(netdev_);
+ free(netdev);
+}
+
+static int
+netdev_tunnel_get_config(struct netdev_dev *dev_, struct shash *args)
+{
+ struct netdev_dev_tunnel *netdev_dev = netdev_dev_tunnel_cast(dev_);
+
+ if (netdev_dev->valid_remote_ip)
+ shash_add(args, "remote_ip",
+ xasprintf(IP_FMT, IP_ARGS(&netdev_dev->remote_addr.sin_addr)));
+ if (netdev_dev->valid_remote_port)
+ shash_add(args, "remote_port",
+ xasprintf("%"PRIu16, ntohs(netdev_dev->remote_addr.sin_port)));
+ return 0;
+}
+
+static int
+netdev_tunnel_connect(struct netdev_dev_tunnel *dev)
+{
+ if (dev->sockfd < 0)
+ return EBADF;
+ if (!dev->valid_remote_ip || !dev->valid_remote_port)
+ return 0;
+ dev->remote_addr.sin_family = AF_INET;
+ if (connect(dev->sockfd, (struct sockaddr*) &dev->remote_addr, sizeof(dev->remote_addr)) < 0) {
+ return errno;
+ }
+ dev->connected = true;
+ netdev_tunnel_update_seq(dev);
+ VLOG_DBG("%s: connected to (%s, %d)", netdev_dev_get_name(&dev->netdev_dev),
+ inet_ntoa(dev->remote_addr.sin_addr), ntohs(dev->remote_addr.sin_port));
+ return 0;
+}
+
+static int
+netdev_tunnel_set_config(struct netdev_dev *dev_, const struct shash *args)
+{
+ struct netdev_dev_tunnel *netdev_dev = netdev_dev_tunnel_cast(dev_);
+ struct shash_node *node;
+
+ VLOG_DBG("tunnel_set_config(%s)", netdev_dev_get_name(dev_));
+ SHASH_FOR_EACH(node, args) {
+ VLOG_DBG("arg: %s->%s", node->name, (char*)node->data);
+ if (!strcmp(node->name, "remote_ip")) {
+ struct in_addr addr;
+ if (lookup_ip(node->data, &addr)) {
+ VLOG_WARN("%s: bad 'remote_ip'", node->name);
+ } else {
+ netdev_dev->remote_addr.sin_addr = addr;
+ netdev_dev->valid_remote_ip = true;
+ }
+ } else if (!strcmp(node->name, "remote_port")) {
+ netdev_dev->remote_addr.sin_port = htons(atoi(node->data));
+ netdev_dev->valid_remote_port = true;
+ } else {
+ VLOG_WARN("%s: unknown argument '%s'",
+ netdev_dev_get_name(dev_), node->name);
+ }
+ }
+ return netdev_tunnel_connect(netdev_dev);
+}
+
+static int
+netdev_tunnel_listen(struct netdev *netdev_ OVS_UNUSED)
+{
+ return 0;
+}
+
+static int
+netdev_tunnel_recv(struct netdev *netdev_, void *buffer, size_t size)
+{
+ struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev_));
+ if (!dev->connected)
+ return -EAGAIN;
+ for (;;) {
+ ssize_t retval;
+ retval = recv(dev->sockfd, buffer, size, MSG_TRUNC);
+ VLOG_DBG("%s: recv(%"PRIxPTR", %"PRIu64", MSG_TRUNC) = %"PRId64,
+ netdev_get_name(netdev_), (uintptr_t)buffer, size, retval);
+ if (retval >= 0) {
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += retval;
+ if (retval <= size) {
+ return retval;
+ } else {
+ dev->stats.rx_errors++;
+ dev->stats.rx_length_errors++;
+ return -EMSGSIZE;
+ }
+ } else if (errno != EINTR) {
+ if (errno != EAGAIN) {
+ VLOG_WARN_RL(&rl, "error receiveing Ethernet packet on %s: %s",
+ netdev_get_name(netdev_), strerror(errno));
+ dev->stats.rx_errors++;
+ }
+ return -errno;
+ }
+ }
+}
+
+static void
+netdev_tunnel_recv_wait(struct netdev *netdev_)
+{
+ struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev_));
+ if (dev->sockfd >= 0) {
+ poll_fd_wait(dev->sockfd, POLLIN);
+ }
+}
+
+static int
+netdev_tunnel_send(struct netdev *netdev_, const void *buffer, size_t size)
+{
+ struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev_));
+ if (!dev->connected)
+ return EAGAIN;
+ for (;;) {
+ ssize_t retval;
+ retval = send(dev->sockfd, buffer, size, 0);
+ VLOG_DBG("%s: send(%"PRIxPTR", %"PRIu64") = %"PRId64,
+ netdev_get_name(netdev_), (uintptr_t)buffer, size, retval);
+ if (retval >= 0) {
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes++;
+ if (retval != size) {
+ VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%"PRId64" bytes of "
+ "%"PRIu64") on %s", retval, size, netdev_get_name(netdev_));
+ dev->stats.tx_errors++;
+ }
+ return 0;
+ } else if (errno != EINTR) {
+ if (errno != EAGAIN) {
+ VLOG_WARN_RL(&rl, "error sending Ethernet packet on %s: %s",
+ netdev_get_name(netdev_), strerror(errno));
+ dev->stats.tx_errors++;
+ }
+ return errno;
+ }
+ }
+}
+
+static void
+netdev_tunnel_send_wait(struct netdev *netdev_)
+{
+ struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev_));
+ if (dev->sockfd >= 0) {
+ poll_fd_wait(dev->sockfd, POLLOUT);
+ }
+}
+
+static int
+netdev_tunnel_drain(struct netdev *netdev_)
+{
+ struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev_));
+ char buffer[128];
+ int error;
+
+ if (!dev->connected)
+ return 0;
+ for (;;) {
+ error = recv(dev->sockfd, buffer, 128, MSG_TRUNC);
+ if (error) {
+ if (error == -EAGAIN)
+ break;
+ else if (error != -EMSGSIZE)
+ return error;
+ }
+ }
+ return 0;
+}
+
+static int
+netdev_tunnel_set_etheraddr(struct netdev *netdev,
+ const uint8_t mac[ETH_ADDR_LEN])
+{
+ struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev));
+
+ if (!eth_addr_equals(dev->hwaddr, mac)) {
+ memcpy(dev->hwaddr, mac, ETH_ADDR_LEN);
+ netdev_tunnel_update_seq(dev);
+ }
+
+ return 0;
+}
+
+static int
+netdev_tunnel_get_etheraddr(const struct netdev *netdev,
+ uint8_t mac[ETH_ADDR_LEN])
+{
+ const struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev));
+
+ memcpy(mac, dev->hwaddr, ETH_ADDR_LEN);
+ return 0;
+}
+
+
+static int
+netdev_tunnel_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
+{
+ const struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev));
+
+ *stats = dev->stats;
+ return 0;
+}
+
+static int
+netdev_tunnel_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
+{
+ struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev));
+
+ dev->stats = *stats;
+ return 0;
+}
+
+static int
+netdev_tunnel_update_flags(struct netdev *netdev,
+ enum netdev_flags off, enum netdev_flags on,
+ enum netdev_flags *old_flagsp)
+{
+ struct netdev_dev_tunnel *dev =
+ netdev_dev_tunnel_cast(netdev_get_dev(netdev));
+
+ if ((off | on) & ~(NETDEV_UP | NETDEV_PROMISC)) {
+ return EINVAL;
+ }
+
+ // XXX should we actually do something with this flags?
+ *old_flagsp = dev->flags;
+ dev->flags |= on;
+ dev->flags &= ~off;
+ if (*old_flagsp != dev->flags) {
+ netdev_tunnel_update_seq(dev);
+ }
+ return 0;
+}
+
+static unsigned int
+netdev_tunnel_change_seq(const struct netdev *netdev)
+{
+ return netdev_dev_tunnel_cast(netdev_get_dev(netdev))->change_seq;
+}
+\f
+/* Helper functions. */
+
+static void
+netdev_tunnel_update_seq(struct netdev_dev_tunnel *dev)
+{
+ dev->change_seq++;
+ if (!dev->change_seq) {
+ dev->change_seq++;
+ }
+}
+
+static void
+netdev_tunnel_get_port(struct unixctl_conn *conn,
+ int argc OVS_UNUSED, const char *argv[], void *aux OVS_UNUSED)
+{
+ struct netdev_dev_tunnel *tunnel_dev;
+ char buf[6];
+
+ tunnel_dev = shash_find_data(&tunnel_netdev_devs, argv[1]);
+ if (!tunnel_dev) {
+ unixctl_command_reply_error(conn, "no such tunnel netdev");
+ return;
+ }
+
+ sprintf(buf, "%d", ntohs(tunnel_dev->local_addr.sin_port));
+ unixctl_command_reply(conn, buf);
+}
+
+
+static int
+netdev_tunnel_init(void)
+{
+ unixctl_command_register("netdev-tunnel/get-port", "NAME",
+ 1, 1, netdev_tunnel_get_port, NULL);
+ return 0;
+}
+
+const struct netdev_class netdev_tunnel_class = {
+ "tunnel",
+ netdev_tunnel_init, /* init */
+ NULL, /* run */
+ NULL, /* wait */
+
+ netdev_tunnel_create,
+ netdev_tunnel_destroy,
+ netdev_tunnel_get_config,
+ netdev_tunnel_set_config,
+
+ netdev_tunnel_open,
+ netdev_tunnel_close,
+
+ netdev_tunnel_listen,
+ netdev_tunnel_recv,
+ netdev_tunnel_recv_wait,
+ netdev_tunnel_drain,
+
+ netdev_tunnel_send,
+ netdev_tunnel_send_wait,
+
+ netdev_tunnel_set_etheraddr,
+ netdev_tunnel_get_etheraddr,
+ NULL, /* get_mtu */
+ NULL, /* set_mtu */
+ NULL, /* get_ifindex */
+ NULL, /* get_carrier */
+ NULL, /* get_carrier_resets */
+ NULL, /* get_miimon */
+ netdev_tunnel_get_stats,
+ netdev_tunnel_set_stats,
+
+ NULL, /* get_features */
+ NULL, /* set_advertisements */
+
+ NULL, /* set_policing */
+ NULL, /* get_qos_types */
+ NULL, /* get_qos_capabilities */
+ NULL, /* get_qos */
+ NULL, /* set_qos */
+ NULL, /* get_queue */
+ NULL, /* set_queue */
+ NULL, /* delete_queue */
+ NULL, /* get_queue_stats */
+ NULL, /* dump_queues */
+ NULL, /* dump_queue_stats */
+
+ NULL, /* get_in4 */
+ NULL, /* set_in4 */
+ NULL, /* get_in6 */
+ NULL, /* add_router */
+ NULL, /* get_next_hop */
+ NULL, /* get_drv_info */
+ NULL, /* arp_lookup */
+
+ netdev_tunnel_update_flags,
+
+ netdev_tunnel_change_seq
+};
git://git.onelab.eu / sliver-openvswitch.git / blobdiff