/*
- * Copyright (c) 2010 Nicira Networks.
+ * Copyright (c) 2010, 2011 Nicira Networks.
*
* 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 <fcntl.h>
+#include <sys/socket.h>
+#include <linux/rtnetlink.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include "byte-order.h"
+#include "hash.h"
+#include "hmap.h"
#include "list.h"
#include "netdev-provider.h"
+#include "netlink.h"
+#include "netlink-socket.h"
+#include "ofpbuf.h"
#include "openvswitch/datapath-protocol.h"
#include "openvswitch/tunnel.h"
#include "packets.h"
+#include "rtnetlink.h"
+#include "route-table.h"
+#include "rtnetlink-link.h"
#include "shash.h"
#include "socket-util.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(netdev_vport);
+static struct hmap name_map;
+static struct rtnetlink_notifier netdev_vport_link_notifier;
+
+struct name_node {
+ struct hmap_node node; /* Node in name_map. */
+ uint32_t ifi_index; /* Kernel interface index. */
+
+ char ifname[IFNAMSIZ]; /* Interface name. */
+};
+
struct netdev_vport_notifier {
struct netdev_notifier notifier;
struct list list_node;
const struct shash *, struct netdev_dev **);
static void netdev_vport_poll_notify(const struct netdev *);
+static void netdev_vport_tnl_iface_init(void);
+static void netdev_vport_link_change(const struct rtnetlink_link_change *,
+ void *);
+static const char *netdev_vport_get_tnl_iface(const struct netdev *netdev);
+
static bool
is_vport_class(const struct netdev_class *class)
{
}
}
+static int
+netdev_vport_init(void)
+{
+ netdev_vport_tnl_iface_init();
+ route_table_register();
+ return 0;
+}
+
static int
netdev_vport_create(const struct netdev_class *netdev_class, const char *name,
const struct shash *args,
{
struct netdev_dev_vport *netdev_dev = netdev_dev_vport_cast(netdev_dev_);
+ route_table_unregister();
free(netdev_dev);
}
return err;
}
+static int
+netdev_vport_get_status(const struct netdev *netdev, struct shash *sh)
+{
+ const char *iface = netdev_vport_get_tnl_iface(netdev);
+
+ if (iface) {
+ shash_add(sh, "tunnel_egress_iface", xstrdup(iface));
+ }
+
+ return 0;
+}
+
static int
netdev_vport_update_flags(struct netdev *netdev OVS_UNUSED,
enum netdev_flags off, enum netdev_flags on OVS_UNUSED,
free(notifier);
}
+
+static void
+netdev_vport_run(void)
+{
+ rtnetlink_link_notifier_run();
+ route_table_run();
+}
+
+static void
+netdev_vport_wait(void)
+{
+ rtnetlink_link_notifier_wait();
+ route_table_wait();
+}
+\f
+/* get_tnl_iface() implementation. */
+
+static struct name_node *
+name_node_lookup(int ifi_index)
+{
+ struct name_node *nn;
+
+ HMAP_FOR_EACH_WITH_HASH(nn, node, hash_int(ifi_index, 0), &name_map) {
+ if (nn->ifi_index == ifi_index) {
+ return nn;
+ }
+ }
+
+ return NULL;
+}
+
+/* Queries the kernel for fresh data to populate the name map with. */
+static int
+netdev_vport_reset_names(void)
+{
+ int error;
+ struct nl_dump dump;
+ struct rtgenmsg *rtmsg;
+ struct ofpbuf request, reply;
+ static struct nl_sock *rtnl_sock;
+ struct name_node *nn, *nn_next;
+
+ HMAP_FOR_EACH_SAFE(nn, nn_next, node, &name_map) {
+ hmap_remove(&name_map, &nn->node);
+ free(nn);
+ }
+
+ error = nl_sock_create(NETLINK_ROUTE, 0, 0, 0, &rtnl_sock);
+ if (error) {
+ VLOG_WARN_RL(&rl, "Failed to create NETLINK_ROUTE socket");
+ return error;
+ }
+
+ ofpbuf_init(&request, 0);
+
+ nl_msg_put_nlmsghdr(&request, sizeof *rtmsg, RTM_GETLINK, NLM_F_REQUEST);
+
+ rtmsg = ofpbuf_put_zeros(&request, sizeof *rtmsg);
+ rtmsg->rtgen_family = AF_INET;
+
+ nl_dump_start(&dump, rtnl_sock, &request);
+
+ while (nl_dump_next(&dump, &reply)) {
+ struct rtnetlink_link_change change;
+
+ if (rtnetlink_link_parse(&reply, &change)) {
+ netdev_vport_link_change(&change, NULL);
+ }
+ }
+
+ error = nl_dump_done(&dump);
+ nl_sock_destroy(rtnl_sock);
+
+ return error;
+}
+
+static void
+netdev_vport_link_change(const struct rtnetlink_link_change *change,
+ void *aux OVS_UNUSED)
+{
+
+ if (!change) {
+ netdev_vport_reset_names();
+ } else if (change->nlmsg_type == RTM_NEWLINK) {
+ struct name_node *nn;
+
+ if (name_node_lookup(change->ifi_index)) {
+ return;
+ }
+
+ nn = xzalloc(sizeof *nn);
+ nn->ifi_index = change->ifi_index;
+
+ strncpy(nn->ifname, change->ifname, IFNAMSIZ);
+ nn->ifname[IFNAMSIZ - 1] = '\0';
+
+ hmap_insert(&name_map, &nn->node, hash_int(nn->ifi_index, 0));
+ } else if (change->nlmsg_type == RTM_DELLINK) {
+ struct name_node *nn;
+
+ nn = name_node_lookup(change->ifi_index);
+
+ if (nn) {
+ hmap_remove(&name_map, &nn->node);
+ free(nn);
+ }
+
+ } else {
+ VLOG_WARN_RL(&rl, "Received unexpected rtnetlink message type %d",
+ change->nlmsg_type);
+ }
+}
+
+static void
+netdev_vport_tnl_iface_init(void)
+{
+ static bool tnl_iface_is_init = false;
+
+ if (!tnl_iface_is_init) {
+ hmap_init(&name_map);
+
+ rtnetlink_link_notifier_register(&netdev_vport_link_notifier,
+ netdev_vport_link_change, NULL);
+
+ netdev_vport_reset_names();
+ tnl_iface_is_init = true;
+ }
+}
+
+static const char *
+netdev_vport_get_tnl_iface(const struct netdev *netdev)
+{
+ int ifindex;
+ uint32_t route;
+ struct netdev_dev_vport *ndv;
+ struct tnl_port_config *config;
+
+ ndv = netdev_dev_vport_cast(netdev_get_dev(netdev));
+ config = (struct tnl_port_config *) ndv->config;
+ route = config->daddr;
+
+ if (route_table_get_ifindex(route, &ifindex)) {
+ struct name_node *nn;
+ HMAP_FOR_EACH_WITH_HASH(nn, node, hash_int(ifindex, 0), &name_map) {
+ if (nn->ifi_index == ifindex) {
+ return nn->ifname;
+ }
+ }
+ }
+
+ return NULL;
+}
\f
/* Helper functions. */
if (shash_find(args, "certificate")) {
ipsec_mech_set = true;
} else {
- VLOG_WARN("%s: 'peer_cert' requires 'certificate' argument",
- name);
- return EINVAL;
+ const char *use_ssl_cert;
+
+ /* If the "use_ssl_cert" is true, then "certificate" and
+ * "private_key" will be pulled from the SSL table. The
+ * use of this option is strongly discouraged, since it
+ * will like be removed when multiple SSL configurations
+ * are supported by OVS.
+ */
+ use_ssl_cert = shash_find_data(args, "use_ssl_cert");
+ if (!use_ssl_cert || strcmp(use_ssl_cert, "true")) {
+ VLOG_WARN("%s: 'peer_cert' requires 'certificate' argument",
+ name);
+ return EINVAL;
+ }
+ ipsec_mech_set = true;
}
} else if (!strcmp(node->name, "psk") && is_ipsec) {
ipsec_mech_set = true;
- } else if (is_ipsec
+ } else if (is_ipsec
&& (!strcmp(node->name, "certificate")
- || !strcmp(node->name, "private_key"))) {
+ || !strcmp(node->name, "private_key")
+ || !strcmp(node->name, "use_ssl_cert"))) {
/* Ignore options not used by the netdev. */
} else {
VLOG_WARN("%s: unknown %s argument '%s'",
return 0;
}
\f
-#define VPORT_FUNCTIONS \
- NULL, /* init */ \
- NULL, /* run */ \
- NULL, /* wait */ \
+#define VPORT_FUNCTIONS(GET_STATUS) \
+ netdev_vport_init, \
+ netdev_vport_run, \
+ netdev_vport_wait, \
\
netdev_vport_create, \
netdev_vport_destroy, \
netdev_vport_get_mtu, \
NULL, /* get_ifindex */ \
NULL, /* get_carrier */ \
+ NULL, /* get_miimon */ \
netdev_vport_get_stats, \
netdev_vport_set_stats, \
\
NULL, /* get_in6 */ \
NULL, /* add_router */ \
NULL, /* get_next_hop */ \
+ GET_STATUS, \
NULL, /* arp_lookup */ \
\
netdev_vport_update_flags, \
netdev_vport_register(void)
{
static const struct vport_class vport_classes[] = {
- { { "gre", VPORT_FUNCTIONS }, parse_tunnel_config },
- { { "ipsec_gre", VPORT_FUNCTIONS }, parse_tunnel_config },
- { { "capwap", VPORT_FUNCTIONS }, parse_tunnel_config },
- { { "patch", VPORT_FUNCTIONS }, parse_patch_config }
+ { { "gre", VPORT_FUNCTIONS(netdev_vport_get_status) },
+ parse_tunnel_config },
+ { { "ipsec_gre", VPORT_FUNCTIONS(netdev_vport_get_status) },
+ parse_tunnel_config },
+ { { "capwap", VPORT_FUNCTIONS(netdev_vport_get_status) },
+ parse_tunnel_config },
+ { { "patch", VPORT_FUNCTIONS(NULL) }, parse_patch_config }
};
int i;
git://git.onelab.eu / sliver-openvswitch.git / blobdiff