mirror of
https://github.com/openvswitch/ovs
synced 2025-08-28 12:58:00 +00:00
1035 lines
33 KiB
C
1035 lines
33 KiB
C
/*
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* Copyright (c) 2010, 2011, 2012 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <config.h>
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#include "netdev-vport.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/socket.h>
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#include <linux/openvswitch.h>
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#include <linux/rtnetlink.h>
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#include <net/if.h>
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#include <sys/ioctl.h>
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#include "byte-order.h"
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#include "daemon.h"
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#include "dirs.h"
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#include "dpif-linux.h"
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#include "hash.h"
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#include "hmap.h"
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#include "list.h"
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#include "netdev-linux.h"
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#include "netdev-provider.h"
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#include "netlink.h"
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#include "netlink-notifier.h"
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#include "netlink-socket.h"
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#include "ofpbuf.h"
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#include "openvswitch/tunnel.h"
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#include "packets.h"
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#include "route-table.h"
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#include "shash.h"
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#include "socket-util.h"
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#include "unaligned.h"
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#include "vlog.h"
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VLOG_DEFINE_THIS_MODULE(netdev_vport);
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/* Default to the OTV port, per the VXLAN IETF draft. */
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#define VXLAN_DST_PORT 8472
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struct netdev_dev_vport {
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struct netdev_dev netdev_dev;
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struct ofpbuf *options;
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int dp_ifindex; /* -1 if unknown. */
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uint32_t port_no; /* UINT32_MAX if unknown. */
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unsigned int change_seq;
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};
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struct netdev_vport {
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struct netdev netdev;
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};
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struct vport_class {
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enum ovs_vport_type type;
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struct netdev_class netdev_class;
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int (*parse_config)(const char *name, const char *type,
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const struct smap *args, struct ofpbuf *options);
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int (*unparse_config)(const char *name, const char *type,
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const struct nlattr *options, size_t options_len,
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struct smap *args);
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};
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static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
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static int netdev_vport_create(const struct netdev_class *, const char *,
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struct netdev_dev **);
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static void netdev_vport_poll_notify(const struct netdev *);
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static int tnl_port_config_from_nlattr(const struct nlattr *options,
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size_t options_len,
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struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1]);
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static const char *netdev_vport_get_tnl_iface(const struct netdev *netdev);
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static bool
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is_vport_class(const struct netdev_class *class)
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{
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return class->create == netdev_vport_create;
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}
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static const struct vport_class *
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vport_class_cast(const struct netdev_class *class)
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{
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assert(is_vport_class(class));
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return CONTAINER_OF(class, struct vport_class, netdev_class);
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}
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static struct netdev_dev_vport *
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netdev_dev_vport_cast(const struct netdev_dev *netdev_dev)
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{
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assert(is_vport_class(netdev_dev_get_class(netdev_dev)));
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return CONTAINER_OF(netdev_dev, struct netdev_dev_vport, netdev_dev);
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}
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static struct netdev_vport *
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netdev_vport_cast(const struct netdev *netdev)
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{
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struct netdev_dev *netdev_dev = netdev_get_dev(netdev);
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assert(is_vport_class(netdev_dev_get_class(netdev_dev)));
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return CONTAINER_OF(netdev, struct netdev_vport, netdev);
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}
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/* If 'netdev' is a vport netdev, returns an ofpbuf that contains Netlink
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* options to include in OVS_VPORT_ATTR_OPTIONS for configuring that vport.
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* Otherwise returns NULL. */
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const struct ofpbuf *
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netdev_vport_get_options(const struct netdev *netdev)
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{
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const struct netdev_dev *dev = netdev_get_dev(netdev);
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return (is_vport_class(netdev_dev_get_class(dev))
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? netdev_dev_vport_cast(dev)->options
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: NULL);
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}
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enum ovs_vport_type
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netdev_vport_get_vport_type(const struct netdev *netdev)
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{
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const struct netdev_dev *dev = netdev_get_dev(netdev);
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const struct netdev_class *class = netdev_dev_get_class(dev);
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return (is_vport_class(class) ? vport_class_cast(class)->type
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: class == &netdev_internal_class ? OVS_VPORT_TYPE_INTERNAL
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: (class == &netdev_linux_class ||
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class == &netdev_tap_class) ? OVS_VPORT_TYPE_NETDEV
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: OVS_VPORT_TYPE_UNSPEC);
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}
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const char *
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netdev_vport_get_netdev_type(const struct dpif_linux_vport *vport)
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{
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struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1];
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switch (vport->type) {
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case OVS_VPORT_TYPE_UNSPEC:
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break;
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case OVS_VPORT_TYPE_NETDEV:
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return "system";
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case OVS_VPORT_TYPE_INTERNAL:
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return "internal";
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case OVS_VPORT_TYPE_PATCH:
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return "patch";
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case OVS_VPORT_TYPE_GRE:
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if (tnl_port_config_from_nlattr(vport->options, vport->options_len,
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a)) {
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break;
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}
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return (nl_attr_get_u32(a[OVS_TUNNEL_ATTR_FLAGS]) & TNL_F_IPSEC
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? "ipsec_gre" : "gre");
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case OVS_VPORT_TYPE_GRE64:
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if (tnl_port_config_from_nlattr(vport->options, vport->options_len,
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a)) {
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break;
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}
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return (nl_attr_get_u32(a[OVS_TUNNEL_ATTR_FLAGS]) & TNL_F_IPSEC
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? "ipsec_gre64" : "gre64");
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case OVS_VPORT_TYPE_CAPWAP:
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return "capwap";
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case OVS_VPORT_TYPE_VXLAN:
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return "vxlan";
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case OVS_VPORT_TYPE_FT_GRE:
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case __OVS_VPORT_TYPE_MAX:
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break;
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}
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VLOG_WARN_RL(&rl, "dp%d: port `%s' has unsupported type %u",
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vport->dp_ifindex, vport->name, (unsigned int) vport->type);
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return "unknown";
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}
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static int
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netdev_vport_create(const struct netdev_class *netdev_class, const char *name,
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struct netdev_dev **netdev_devp)
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{
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struct netdev_dev_vport *dev;
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dev = xmalloc(sizeof *dev);
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netdev_dev_init(&dev->netdev_dev, name, netdev_class);
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dev->options = NULL;
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dev->dp_ifindex = -1;
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dev->port_no = UINT32_MAX;
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dev->change_seq = 1;
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*netdev_devp = &dev->netdev_dev;
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route_table_register();
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return 0;
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}
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static void
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netdev_vport_destroy(struct netdev_dev *netdev_dev_)
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{
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struct netdev_dev_vport *netdev_dev = netdev_dev_vport_cast(netdev_dev_);
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ofpbuf_delete(netdev_dev->options);
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route_table_unregister();
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free(netdev_dev);
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}
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static int
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netdev_vport_open(struct netdev_dev *netdev_dev_, struct netdev **netdevp)
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{
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struct netdev_vport *netdev;
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netdev = xmalloc(sizeof *netdev);
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netdev_init(&netdev->netdev, netdev_dev_);
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*netdevp = &netdev->netdev;
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return 0;
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}
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static void
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netdev_vport_close(struct netdev *netdev_)
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{
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struct netdev_vport *netdev = netdev_vport_cast(netdev_);
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free(netdev);
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}
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static int
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netdev_vport_get_config(struct netdev_dev *dev_, struct smap *args)
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{
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const struct netdev_class *netdev_class = netdev_dev_get_class(dev_);
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const struct vport_class *vport_class = vport_class_cast(netdev_class);
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struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
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const char *name = netdev_dev_get_name(dev_);
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int error;
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if (!dev->options) {
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struct dpif_linux_vport reply;
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struct ofpbuf *buf;
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error = dpif_linux_vport_get(name, &reply, &buf);
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if (error) {
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VLOG_ERR_RL(&rl, "%s: vport query failed (%s)",
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name, strerror(error));
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return error;
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}
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dev->options = ofpbuf_clone_data(reply.options, reply.options_len);
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dev->dp_ifindex = reply.dp_ifindex;
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dev->port_no = reply.port_no;
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ofpbuf_delete(buf);
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}
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error = vport_class->unparse_config(name, netdev_class->type,
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dev->options->data,
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dev->options->size,
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args);
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if (error) {
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VLOG_ERR_RL(&rl, "%s: failed to parse kernel config (%s)",
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name, strerror(error));
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}
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return error;
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}
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static int
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netdev_vport_set_config(struct netdev_dev *dev_, const struct smap *args)
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{
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const struct netdev_class *netdev_class = netdev_dev_get_class(dev_);
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const struct vport_class *vport_class = vport_class_cast(netdev_class);
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struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
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const char *name = netdev_dev_get_name(dev_);
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struct ofpbuf *options;
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int error;
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options = ofpbuf_new(64);
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error = vport_class->parse_config(name, netdev_dev_get_type(dev_),
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args, options);
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if (!error
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&& (!dev->options
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|| options->size != dev->options->size
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|| memcmp(options->data, dev->options->data, options->size))) {
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struct dpif_linux_vport vport;
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dpif_linux_vport_init(&vport);
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vport.cmd = OVS_VPORT_CMD_SET;
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vport.name = name;
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vport.options = options->data;
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vport.options_len = options->size;
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error = dpif_linux_vport_transact(&vport, NULL, NULL);
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if (!error || error == ENODEV) {
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/* Either reconfiguration succeeded or this vport is not installed
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* in the kernel (e.g. it hasn't been added to a dpif yet with
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* dpif_port_add()). */
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ofpbuf_delete(dev->options);
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dev->options = options;
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options = NULL;
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error = 0;
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}
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}
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ofpbuf_delete(options);
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return error;
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}
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static int
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netdev_vport_send(struct netdev *netdev, const void *data, size_t size)
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{
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struct netdev_dev *dev_ = netdev_get_dev(netdev);
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struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
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if (dev->dp_ifindex == -1) {
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const char *name = netdev_get_name(netdev);
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struct dpif_linux_vport reply;
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struct ofpbuf *buf;
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int error;
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error = dpif_linux_vport_get(name, &reply, &buf);
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if (error) {
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VLOG_ERR_RL(&rl, "%s: failed to query vport for send (%s)",
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name, strerror(error));
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return error;
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}
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dev->dp_ifindex = reply.dp_ifindex;
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dev->port_no = reply.port_no;
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ofpbuf_delete(buf);
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}
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return dpif_linux_vport_send(dev->dp_ifindex, dev->port_no, data, size);
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}
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static int
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netdev_vport_set_etheraddr(struct netdev *netdev,
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const uint8_t mac[ETH_ADDR_LEN])
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{
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struct dpif_linux_vport vport;
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int error;
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dpif_linux_vport_init(&vport);
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vport.cmd = OVS_VPORT_CMD_SET;
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vport.name = netdev_get_name(netdev);
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vport.address = mac;
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error = dpif_linux_vport_transact(&vport, NULL, NULL);
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if (!error) {
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netdev_vport_poll_notify(netdev);
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}
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return error;
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}
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static int
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netdev_vport_get_etheraddr(const struct netdev *netdev,
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uint8_t mac[ETH_ADDR_LEN])
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{
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struct dpif_linux_vport reply;
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struct ofpbuf *buf;
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int error;
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error = dpif_linux_vport_get(netdev_get_name(netdev), &reply, &buf);
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if (!error) {
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if (reply.address) {
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memcpy(mac, reply.address, ETH_ADDR_LEN);
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} else {
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error = EOPNOTSUPP;
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}
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ofpbuf_delete(buf);
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}
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return error;
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}
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/* Copies 'src' into 'dst', performing format conversion in the process.
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*
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* 'src' is allowed to be misaligned. */
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static void
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netdev_stats_from_ovs_vport_stats(struct netdev_stats *dst,
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const struct ovs_vport_stats *src)
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{
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dst->rx_packets = get_unaligned_u64(&src->rx_packets);
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dst->tx_packets = get_unaligned_u64(&src->tx_packets);
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dst->rx_bytes = get_unaligned_u64(&src->rx_bytes);
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dst->tx_bytes = get_unaligned_u64(&src->tx_bytes);
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dst->rx_errors = get_unaligned_u64(&src->rx_errors);
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dst->tx_errors = get_unaligned_u64(&src->tx_errors);
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dst->rx_dropped = get_unaligned_u64(&src->rx_dropped);
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dst->tx_dropped = get_unaligned_u64(&src->tx_dropped);
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dst->multicast = 0;
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dst->collisions = 0;
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dst->rx_length_errors = 0;
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dst->rx_over_errors = 0;
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dst->rx_crc_errors = 0;
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dst->rx_frame_errors = 0;
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dst->rx_fifo_errors = 0;
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dst->rx_missed_errors = 0;
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dst->tx_aborted_errors = 0;
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dst->tx_carrier_errors = 0;
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dst->tx_fifo_errors = 0;
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dst->tx_heartbeat_errors = 0;
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dst->tx_window_errors = 0;
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}
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/* Copies 'src' into 'dst', performing format conversion in the process. */
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static void
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netdev_stats_to_ovs_vport_stats(struct ovs_vport_stats *dst,
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const struct netdev_stats *src)
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{
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dst->rx_packets = src->rx_packets;
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dst->tx_packets = src->tx_packets;
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dst->rx_bytes = src->rx_bytes;
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dst->tx_bytes = src->tx_bytes;
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dst->rx_errors = src->rx_errors;
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dst->tx_errors = src->tx_errors;
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dst->rx_dropped = src->rx_dropped;
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dst->tx_dropped = src->tx_dropped;
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}
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int
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netdev_vport_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
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{
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struct dpif_linux_vport reply;
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struct ofpbuf *buf;
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int error;
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error = dpif_linux_vport_get(netdev_get_name(netdev), &reply, &buf);
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if (error) {
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return error;
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} else if (!reply.stats) {
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ofpbuf_delete(buf);
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return EOPNOTSUPP;
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}
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netdev_stats_from_ovs_vport_stats(stats, reply.stats);
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ofpbuf_delete(buf);
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return 0;
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}
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int
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netdev_vport_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
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{
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struct ovs_vport_stats rtnl_stats;
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struct dpif_linux_vport vport;
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int err;
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netdev_stats_to_ovs_vport_stats(&rtnl_stats, stats);
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dpif_linux_vport_init(&vport);
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vport.cmd = OVS_VPORT_CMD_SET;
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vport.name = netdev_get_name(netdev);
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vport.stats = &rtnl_stats;
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err = dpif_linux_vport_transact(&vport, NULL, NULL);
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/* If the vport layer doesn't know about the device, that doesn't mean it
|
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* doesn't exist (after all were able to open it when netdev_open() was
|
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* called), it just means that it isn't attached and we'll be getting
|
||
* stats a different way. */
|
||
if (err == ENODEV) {
|
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err = EOPNOTSUPP;
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}
|
||
|
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return err;
|
||
}
|
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|
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static int
|
||
netdev_vport_get_drv_info(const struct netdev *netdev, struct smap *smap)
|
||
{
|
||
const char *iface = netdev_vport_get_tnl_iface(netdev);
|
||
|
||
if (iface) {
|
||
struct netdev *egress_netdev;
|
||
|
||
smap_add(smap, "tunnel_egress_iface", iface);
|
||
|
||
if (!netdev_open(iface, "system", &egress_netdev)) {
|
||
smap_add(smap, "tunnel_egress_iface_carrier",
|
||
netdev_get_carrier(egress_netdev) ? "up" : "down");
|
||
netdev_close(egress_netdev);
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
netdev_vport_update_flags(struct netdev *netdev OVS_UNUSED,
|
||
enum netdev_flags off, enum netdev_flags on OVS_UNUSED,
|
||
enum netdev_flags *old_flagsp)
|
||
{
|
||
if (off & (NETDEV_UP | NETDEV_PROMISC)) {
|
||
return EOPNOTSUPP;
|
||
}
|
||
|
||
*old_flagsp = NETDEV_UP | NETDEV_PROMISC;
|
||
return 0;
|
||
}
|
||
|
||
static unsigned int
|
||
netdev_vport_change_seq(const struct netdev *netdev)
|
||
{
|
||
return netdev_dev_vport_cast(netdev_get_dev(netdev))->change_seq;
|
||
}
|
||
|
||
static void
|
||
netdev_vport_run(void)
|
||
{
|
||
route_table_run();
|
||
}
|
||
|
||
static void
|
||
netdev_vport_wait(void)
|
||
{
|
||
route_table_wait();
|
||
}
|
||
|
||
/* get_tnl_iface() implementation. */
|
||
static const char *
|
||
netdev_vport_get_tnl_iface(const struct netdev *netdev)
|
||
{
|
||
struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1];
|
||
ovs_be32 route;
|
||
struct netdev_dev_vport *ndv;
|
||
static char name[IFNAMSIZ];
|
||
|
||
ndv = netdev_dev_vport_cast(netdev_get_dev(netdev));
|
||
if (tnl_port_config_from_nlattr(ndv->options->data, ndv->options->size,
|
||
a)) {
|
||
return NULL;
|
||
}
|
||
route = nl_attr_get_be32(a[OVS_TUNNEL_ATTR_DST_IPV4]);
|
||
|
||
if (route_table_get_name(route, name)) {
|
||
return name;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Helper functions. */
|
||
|
||
static void
|
||
netdev_vport_poll_notify(const struct netdev *netdev)
|
||
{
|
||
struct netdev_dev_vport *ndv;
|
||
|
||
ndv = netdev_dev_vport_cast(netdev_get_dev(netdev));
|
||
|
||
ndv->change_seq++;
|
||
if (!ndv->change_seq) {
|
||
ndv->change_seq++;
|
||
}
|
||
}
|
||
|
||
/* Code specific to individual vport types. */
|
||
|
||
static void
|
||
set_key(const struct smap *args, const char *name, uint16_t type,
|
||
struct ofpbuf *options)
|
||
{
|
||
const char *s;
|
||
|
||
s = smap_get(args, name);
|
||
if (!s) {
|
||
s = smap_get(args, "key");
|
||
if (!s) {
|
||
s = "0";
|
||
}
|
||
}
|
||
|
||
if (!strcmp(s, "flow")) {
|
||
/* This is the default if no attribute is present. */
|
||
} else {
|
||
nl_msg_put_be64(options, type, htonll(strtoull(s, NULL, 0)));
|
||
}
|
||
}
|
||
|
||
static int
|
||
parse_tunnel_config(const char *name, const char *type,
|
||
const struct smap *args, struct ofpbuf *options)
|
||
{
|
||
bool is_gre = false;
|
||
bool is_ipsec = false;
|
||
bool needs_dst_port = false;
|
||
bool found_dst_port = false;
|
||
struct smap_node *node;
|
||
bool ipsec_mech_set = false;
|
||
ovs_be32 daddr = htonl(0);
|
||
ovs_be32 saddr = htonl(0);
|
||
uint32_t flags;
|
||
|
||
if (!strcmp(type, "capwap")) {
|
||
VLOG_WARN_ONCE("CAPWAP tunnel support is deprecated.");
|
||
}
|
||
|
||
flags = TNL_F_DF_DEFAULT;
|
||
if (!strcmp(type, "gre") || !strcmp(type, "gre64")) {
|
||
is_gre = true;
|
||
} else if (!strcmp(type, "ipsec_gre") || !strcmp(type, "ipsec_gre64")) {
|
||
is_gre = true;
|
||
is_ipsec = true;
|
||
flags |= TNL_F_IPSEC;
|
||
} else if (!strcmp(type, "vxlan")) {
|
||
needs_dst_port = true;
|
||
}
|
||
|
||
SMAP_FOR_EACH (node, args) {
|
||
if (!strcmp(node->key, "remote_ip")) {
|
||
struct in_addr in_addr;
|
||
if (lookup_ip(node->value, &in_addr)) {
|
||
VLOG_WARN("%s: bad %s 'remote_ip'", name, type);
|
||
} else {
|
||
daddr = in_addr.s_addr;
|
||
}
|
||
} else if (!strcmp(node->key, "local_ip")) {
|
||
struct in_addr in_addr;
|
||
if (lookup_ip(node->value, &in_addr)) {
|
||
VLOG_WARN("%s: bad %s 'local_ip'", name, type);
|
||
} else {
|
||
saddr = in_addr.s_addr;
|
||
}
|
||
} else if (!strcmp(node->key, "tos")) {
|
||
if (!strcmp(node->value, "inherit")) {
|
||
flags |= TNL_F_TOS_INHERIT;
|
||
} else {
|
||
char *endptr;
|
||
int tos;
|
||
tos = strtol(node->value, &endptr, 0);
|
||
if (*endptr == '\0' && tos == (tos & IP_DSCP_MASK)) {
|
||
nl_msg_put_u8(options, OVS_TUNNEL_ATTR_TOS, tos);
|
||
} else {
|
||
VLOG_WARN("%s: invalid TOS %s", name, node->value);
|
||
}
|
||
}
|
||
} else if (!strcmp(node->key, "ttl")) {
|
||
if (!strcmp(node->value, "inherit")) {
|
||
flags |= TNL_F_TTL_INHERIT;
|
||
} else {
|
||
nl_msg_put_u8(options, OVS_TUNNEL_ATTR_TTL, atoi(node->value));
|
||
}
|
||
} else if (!strcmp(node->key, "dst_port") && needs_dst_port) {
|
||
nl_msg_put_u16(options, OVS_TUNNEL_ATTR_DST_PORT,
|
||
atoi(node->value));
|
||
found_dst_port = true;
|
||
} else if (!strcmp(node->key, "csum") && is_gre) {
|
||
if (!strcmp(node->value, "true")) {
|
||
flags |= TNL_F_CSUM;
|
||
}
|
||
} else if (!strcmp(node->key, "df_inherit")) {
|
||
if (!strcmp(node->value, "true")) {
|
||
flags |= TNL_F_DF_INHERIT;
|
||
}
|
||
} else if (!strcmp(node->key, "df_default")) {
|
||
if (!strcmp(node->value, "false")) {
|
||
flags &= ~TNL_F_DF_DEFAULT;
|
||
}
|
||
} else if (!strcmp(node->key, "pmtud")) {
|
||
if (!strcmp(node->value, "true")) {
|
||
VLOG_WARN_ONCE("%s: The tunnel Path MTU discovery is "
|
||
"deprecated and may be removed in February "
|
||
"2013. Please email dev@openvswitch.org with "
|
||
"concerns.", name);
|
||
flags |= TNL_F_PMTUD;
|
||
}
|
||
} else if (!strcmp(node->key, "peer_cert") && is_ipsec) {
|
||
if (smap_get(args, "certificate")) {
|
||
ipsec_mech_set = true;
|
||
} else {
|
||
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 = smap_get(args, "use_ssl_cert");
|
||
if (!use_ssl_cert || strcmp(use_ssl_cert, "true")) {
|
||
VLOG_ERR("%s: 'peer_cert' requires 'certificate' argument",
|
||
name);
|
||
return EINVAL;
|
||
}
|
||
ipsec_mech_set = true;
|
||
}
|
||
} else if (!strcmp(node->key, "psk") && is_ipsec) {
|
||
ipsec_mech_set = true;
|
||
} else if (is_ipsec
|
||
&& (!strcmp(node->key, "certificate")
|
||
|| !strcmp(node->key, "private_key")
|
||
|| !strcmp(node->key, "use_ssl_cert"))) {
|
||
/* Ignore options not used by the netdev. */
|
||
} else if (!strcmp(node->key, "key") ||
|
||
!strcmp(node->key, "in_key") ||
|
||
!strcmp(node->key, "out_key")) {
|
||
/* Handled separately below. */
|
||
} else {
|
||
VLOG_WARN("%s: unknown %s argument '%s'", name, type, node->key);
|
||
}
|
||
}
|
||
|
||
/* Add a default destination port for VXLAN if none specified. */
|
||
if (needs_dst_port && !found_dst_port) {
|
||
nl_msg_put_u16(options, OVS_TUNNEL_ATTR_DST_PORT, VXLAN_DST_PORT);
|
||
}
|
||
|
||
if (is_ipsec) {
|
||
static pid_t pid = 0;
|
||
if (pid <= 0) {
|
||
char *file_name = xasprintf("%s/%s", ovs_rundir(),
|
||
"ovs-monitor-ipsec.pid");
|
||
pid = read_pidfile(file_name);
|
||
free(file_name);
|
||
}
|
||
|
||
if (pid < 0) {
|
||
VLOG_ERR("%s: IPsec requires the ovs-monitor-ipsec daemon",
|
||
name);
|
||
return EINVAL;
|
||
}
|
||
|
||
if (smap_get(args, "peer_cert") && smap_get(args, "psk")) {
|
||
VLOG_ERR("%s: cannot define both 'peer_cert' and 'psk'", name);
|
||
return EINVAL;
|
||
}
|
||
|
||
if (!ipsec_mech_set) {
|
||
VLOG_ERR("%s: IPsec requires an 'peer_cert' or psk' argument",
|
||
name);
|
||
return EINVAL;
|
||
}
|
||
}
|
||
|
||
set_key(args, "in_key", OVS_TUNNEL_ATTR_IN_KEY, options);
|
||
set_key(args, "out_key", OVS_TUNNEL_ATTR_OUT_KEY, options);
|
||
|
||
if (!daddr) {
|
||
VLOG_ERR("%s: %s type requires valid 'remote_ip' argument",
|
||
name, type);
|
||
return EINVAL;
|
||
}
|
||
nl_msg_put_be32(options, OVS_TUNNEL_ATTR_DST_IPV4, daddr);
|
||
|
||
if (saddr) {
|
||
if (ip_is_multicast(daddr)) {
|
||
VLOG_WARN("%s: remote_ip is multicast, ignoring local_ip", name);
|
||
} else {
|
||
nl_msg_put_be32(options, OVS_TUNNEL_ATTR_SRC_IPV4, saddr);
|
||
}
|
||
}
|
||
|
||
nl_msg_put_u32(options, OVS_TUNNEL_ATTR_FLAGS, flags);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
tnl_port_config_from_nlattr(const struct nlattr *options, size_t options_len,
|
||
struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1])
|
||
{
|
||
static const struct nl_policy ovs_tunnel_policy[] = {
|
||
[OVS_TUNNEL_ATTR_FLAGS] = { .type = NL_A_U32 },
|
||
[OVS_TUNNEL_ATTR_DST_IPV4] = { .type = NL_A_BE32 },
|
||
[OVS_TUNNEL_ATTR_SRC_IPV4] = { .type = NL_A_BE32, .optional = true },
|
||
[OVS_TUNNEL_ATTR_IN_KEY] = { .type = NL_A_BE64, .optional = true },
|
||
[OVS_TUNNEL_ATTR_OUT_KEY] = { .type = NL_A_BE64, .optional = true },
|
||
[OVS_TUNNEL_ATTR_TOS] = { .type = NL_A_U8, .optional = true },
|
||
[OVS_TUNNEL_ATTR_TTL] = { .type = NL_A_U8, .optional = true },
|
||
[OVS_TUNNEL_ATTR_DST_PORT] = { .type = NL_A_U16, .optional = true },
|
||
};
|
||
struct ofpbuf buf;
|
||
|
||
ofpbuf_use_const(&buf, options, options_len);
|
||
if (!nl_policy_parse(&buf, 0, ovs_tunnel_policy,
|
||
a, ARRAY_SIZE(ovs_tunnel_policy))) {
|
||
return EINVAL;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static uint64_t
|
||
get_be64_or_zero(const struct nlattr *a)
|
||
{
|
||
return a ? ntohll(nl_attr_get_be64(a)) : 0;
|
||
}
|
||
|
||
static int
|
||
unparse_tunnel_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED,
|
||
const struct nlattr *options, size_t options_len,
|
||
struct smap *args)
|
||
{
|
||
struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1];
|
||
ovs_be32 daddr;
|
||
uint32_t flags;
|
||
int error;
|
||
|
||
error = tnl_port_config_from_nlattr(options, options_len, a);
|
||
if (error) {
|
||
return error;
|
||
}
|
||
|
||
|
||
daddr = nl_attr_get_be32(a[OVS_TUNNEL_ATTR_DST_IPV4]);
|
||
smap_add_format(args, "remote_ip", IP_FMT, IP_ARGS(&daddr));
|
||
|
||
if (a[OVS_TUNNEL_ATTR_SRC_IPV4]) {
|
||
ovs_be32 saddr = nl_attr_get_be32(a[OVS_TUNNEL_ATTR_SRC_IPV4]);
|
||
smap_add_format(args, "local_ip", IP_FMT, IP_ARGS(&saddr));
|
||
}
|
||
|
||
if (!a[OVS_TUNNEL_ATTR_IN_KEY] && !a[OVS_TUNNEL_ATTR_OUT_KEY]) {
|
||
smap_add(args, "key", "flow");
|
||
} else {
|
||
uint64_t in_key = get_be64_or_zero(a[OVS_TUNNEL_ATTR_IN_KEY]);
|
||
uint64_t out_key = get_be64_or_zero(a[OVS_TUNNEL_ATTR_OUT_KEY]);
|
||
|
||
if (in_key && in_key == out_key) {
|
||
smap_add_format(args, "key", "%"PRIu64, in_key);
|
||
} else {
|
||
if (!a[OVS_TUNNEL_ATTR_IN_KEY]) {
|
||
smap_add(args, "in_key", "flow");
|
||
} else if (in_key) {
|
||
smap_add_format(args, "in_key", "%"PRIu64, in_key);
|
||
}
|
||
|
||
if (!a[OVS_TUNNEL_ATTR_OUT_KEY]) {
|
||
smap_add(args, "out_key", "flow");
|
||
} else if (out_key) {
|
||
smap_add_format(args, "out_key", "%"PRIu64, out_key);
|
||
}
|
||
}
|
||
}
|
||
|
||
flags = nl_attr_get_u32(a[OVS_TUNNEL_ATTR_FLAGS]);
|
||
if (flags & TNL_F_TTL_INHERIT) {
|
||
smap_add(args, "ttl", "inherit");
|
||
} else if (a[OVS_TUNNEL_ATTR_TTL]) {
|
||
int ttl = nl_attr_get_u8(a[OVS_TUNNEL_ATTR_TTL]);
|
||
smap_add_format(args, "ttl", "%d", ttl);
|
||
}
|
||
|
||
if (flags & TNL_F_TOS_INHERIT) {
|
||
smap_add(args, "tos", "inherit");
|
||
} else if (a[OVS_TUNNEL_ATTR_TOS]) {
|
||
int tos = nl_attr_get_u8(a[OVS_TUNNEL_ATTR_TOS]);
|
||
smap_add_format(args, "tos", "0x%x", tos);
|
||
}
|
||
|
||
if (a[OVS_TUNNEL_ATTR_DST_PORT]) {
|
||
uint16_t dst_port = nl_attr_get_u16(a[OVS_TUNNEL_ATTR_DST_PORT]);
|
||
if (dst_port != VXLAN_DST_PORT) {
|
||
smap_add_format(args, "dst_port", "%d", dst_port);
|
||
}
|
||
}
|
||
|
||
if (flags & TNL_F_CSUM) {
|
||
smap_add(args, "csum", "true");
|
||
}
|
||
if (flags & TNL_F_DF_INHERIT) {
|
||
smap_add(args, "df_inherit", "true");
|
||
}
|
||
if (!(flags & TNL_F_DF_DEFAULT)) {
|
||
smap_add(args, "df_default", "false");
|
||
}
|
||
if (flags & TNL_F_PMTUD) {
|
||
smap_add(args, "pmtud", "true");
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
parse_patch_config(const char *name, const char *type OVS_UNUSED,
|
||
const struct smap *args, struct ofpbuf *options)
|
||
{
|
||
const char *peer;
|
||
|
||
peer = smap_get(args, "peer");
|
||
if (!peer) {
|
||
VLOG_ERR("%s: patch type requires valid 'peer' argument", name);
|
||
return EINVAL;
|
||
}
|
||
|
||
if (smap_count(args) > 1) {
|
||
VLOG_ERR("%s: patch type takes only a 'peer' argument", name);
|
||
return EINVAL;
|
||
}
|
||
|
||
if (strlen(peer) >= IFNAMSIZ) {
|
||
VLOG_ERR("%s: patch 'peer' arg too long", name);
|
||
return EINVAL;
|
||
}
|
||
|
||
if (!strcmp(name, peer)) {
|
||
VLOG_ERR("%s: patch peer must not be self", name);
|
||
return EINVAL;
|
||
}
|
||
|
||
nl_msg_put_string(options, OVS_PATCH_ATTR_PEER, peer);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
unparse_patch_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED,
|
||
const struct nlattr *options, size_t options_len,
|
||
struct smap *args)
|
||
{
|
||
static const struct nl_policy ovs_patch_policy[] = {
|
||
[OVS_PATCH_ATTR_PEER] = { .type = NL_A_STRING,
|
||
.max_len = IFNAMSIZ,
|
||
.optional = false }
|
||
};
|
||
|
||
struct nlattr *a[ARRAY_SIZE(ovs_patch_policy)];
|
||
struct ofpbuf buf;
|
||
|
||
ofpbuf_use_const(&buf, options, options_len);
|
||
if (!nl_policy_parse(&buf, 0, ovs_patch_policy,
|
||
a, ARRAY_SIZE(ovs_patch_policy))) {
|
||
return EINVAL;
|
||
}
|
||
|
||
smap_add(args, "peer", nl_attr_get_string(a[OVS_PATCH_ATTR_PEER]));
|
||
return 0;
|
||
}
|
||
|
||
#define VPORT_FUNCTIONS(GET_STATUS) \
|
||
NULL, \
|
||
netdev_vport_run, \
|
||
netdev_vport_wait, \
|
||
\
|
||
netdev_vport_create, \
|
||
netdev_vport_destroy, \
|
||
netdev_vport_get_config, \
|
||
netdev_vport_set_config, \
|
||
\
|
||
netdev_vport_open, \
|
||
netdev_vport_close, \
|
||
\
|
||
NULL, /* listen */ \
|
||
NULL, /* recv */ \
|
||
NULL, /* recv_wait */ \
|
||
NULL, /* drain */ \
|
||
\
|
||
netdev_vport_send, /* send */ \
|
||
NULL, /* send_wait */ \
|
||
\
|
||
netdev_vport_set_etheraddr, \
|
||
netdev_vport_get_etheraddr, \
|
||
NULL, /* get_mtu */ \
|
||
NULL, /* set_mtu */ \
|
||
NULL, /* get_ifindex */ \
|
||
NULL, /* get_carrier */ \
|
||
NULL, /* get_carrier_resets */ \
|
||
NULL, /* get_miimon */ \
|
||
netdev_vport_get_stats, \
|
||
netdev_vport_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 */ \
|
||
GET_STATUS, \
|
||
NULL, /* arp_lookup */ \
|
||
\
|
||
netdev_vport_update_flags, \
|
||
\
|
||
netdev_vport_change_seq
|
||
|
||
void
|
||
netdev_vport_register(void)
|
||
{
|
||
static const struct vport_class vport_classes[] = {
|
||
{ OVS_VPORT_TYPE_GRE,
|
||
{ "gre", VPORT_FUNCTIONS(netdev_vport_get_drv_info) },
|
||
parse_tunnel_config, unparse_tunnel_config },
|
||
|
||
{ OVS_VPORT_TYPE_GRE,
|
||
{ "ipsec_gre", VPORT_FUNCTIONS(netdev_vport_get_drv_info) },
|
||
parse_tunnel_config, unparse_tunnel_config },
|
||
|
||
{ OVS_VPORT_TYPE_GRE64,
|
||
{ "gre64", VPORT_FUNCTIONS(netdev_vport_get_drv_info) },
|
||
parse_tunnel_config, unparse_tunnel_config },
|
||
|
||
{ OVS_VPORT_TYPE_GRE64,
|
||
{ "ipsec_gre64", VPORT_FUNCTIONS(netdev_vport_get_drv_info) },
|
||
parse_tunnel_config, unparse_tunnel_config },
|
||
|
||
{ OVS_VPORT_TYPE_CAPWAP,
|
||
{ "capwap", VPORT_FUNCTIONS(netdev_vport_get_drv_info) },
|
||
parse_tunnel_config, unparse_tunnel_config },
|
||
|
||
{ OVS_VPORT_TYPE_VXLAN,
|
||
{ "vxlan", VPORT_FUNCTIONS(netdev_vport_get_drv_info) },
|
||
parse_tunnel_config, unparse_tunnel_config },
|
||
|
||
{ OVS_VPORT_TYPE_PATCH,
|
||
{ "patch", VPORT_FUNCTIONS(NULL) },
|
||
parse_patch_config, unparse_patch_config }
|
||
};
|
||
|
||
int i;
|
||
|
||
for (i = 0; i < ARRAY_SIZE(vport_classes); i++) {
|
||
netdev_register_provider(&vport_classes[i].netdev_class);
|
||
}
|
||
}
|