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/*
* Copyright (c) 2010, 2011, 2012 Nicira, Inc.
*
* 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 "netdev-vport.h"
#include <errno.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <linux/openvswitch.h>
#include <linux/rtnetlink.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include "byte-order.h"
#include "daemon.h"
#include "dirs.h"
#include "dpif-linux.h"
#include "hash.h"
#include "hmap.h"
#include "list.h"
#include "netdev-linux.h"
#include "netdev-provider.h"
#include "netlink.h"
#include "netlink-notifier.h"
#include "netlink-socket.h"
#include "ofpbuf.h"
#include "openvswitch/tunnel.h"
#include "packets.h"
#include "route-table.h"
#include "shash.h"
#include "socket-util.h"
#include "unaligned.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(netdev_vport);
struct netdev_dev_vport {
struct netdev_dev netdev_dev;
struct ofpbuf *options;
int dp_ifindex; /* -1 if unknown. */
uint32_t port_no; /* UINT32_MAX if unknown. */
unsigned int change_seq;
};
struct netdev_vport {
struct netdev netdev;
};
struct vport_class {
enum ovs_vport_type type;
struct netdev_class netdev_class;
int (*parse_config)(const char *name, const char *type,
const struct smap *args, struct ofpbuf *options);
int (*unparse_config)(const char *name, const char *type,
const struct nlattr *options, size_t options_len,
struct smap *args);
};
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
static int netdev_vport_create(const struct netdev_class *, const char *,
struct netdev_dev **);
static void netdev_vport_poll_notify(const struct netdev *);
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 char *netdev_vport_get_tnl_iface(const struct netdev *netdev);
static bool
is_vport_class(const struct netdev_class *class)
{
return class->create == netdev_vport_create;
}
static const struct vport_class *
vport_class_cast(const struct netdev_class *class)
{
assert(is_vport_class(class));
return CONTAINER_OF(class, struct vport_class, netdev_class);
}
static struct netdev_dev_vport *
netdev_dev_vport_cast(const struct netdev_dev *netdev_dev)
{
assert(is_vport_class(netdev_dev_get_class(netdev_dev)));
return CONTAINER_OF(netdev_dev, struct netdev_dev_vport, netdev_dev);
}
static struct netdev_vport *
netdev_vport_cast(const struct netdev *netdev)
{
struct netdev_dev *netdev_dev = netdev_get_dev(netdev);
assert(is_vport_class(netdev_dev_get_class(netdev_dev)));
return CONTAINER_OF(netdev, struct netdev_vport, netdev);
}
/* If 'netdev' is a vport netdev, returns an ofpbuf that contains Netlink
* options to include in OVS_VPORT_ATTR_OPTIONS for configuring that vport.
* Otherwise returns NULL. */
const struct ofpbuf *
netdev_vport_get_options(const struct netdev *netdev)
{
const struct netdev_dev *dev = netdev_get_dev(netdev);
return (is_vport_class(netdev_dev_get_class(dev))
? netdev_dev_vport_cast(dev)->options
: NULL);
}
enum ovs_vport_type
netdev_vport_get_vport_type(const struct netdev *netdev)
{
const struct netdev_dev *dev = netdev_get_dev(netdev);
const struct netdev_class *class = netdev_dev_get_class(dev);
return (is_vport_class(class) ? vport_class_cast(class)->type
: class == &netdev_internal_class ? OVS_VPORT_TYPE_INTERNAL
: (class == &netdev_linux_class ||
class == &netdev_tap_class) ? OVS_VPORT_TYPE_NETDEV
: OVS_VPORT_TYPE_UNSPEC);
}
const char *
netdev_vport_get_netdev_type(const struct dpif_linux_vport *vport)
{
struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1];
switch (vport->type) {
case OVS_VPORT_TYPE_UNSPEC:
break;
case OVS_VPORT_TYPE_NETDEV:
return "system";
case OVS_VPORT_TYPE_INTERNAL:
return "internal";
case OVS_VPORT_TYPE_PATCH:
return "patch";
case OVS_VPORT_TYPE_GRE:
if (tnl_port_config_from_nlattr(vport->options, vport->options_len,
a)) {
break;
}
return (nl_attr_get_u32(a[OVS_TUNNEL_ATTR_FLAGS]) & TNL_F_IPSEC
? "ipsec_gre" : "gre");
case OVS_VPORT_TYPE_CAPWAP:
return "capwap";
case __OVS_VPORT_TYPE_MAX:
break;
}
VLOG_WARN_RL(&rl, "dp%d: port `%s' has unsupported type %u",
vport->dp_ifindex, vport->name, (unsigned int) vport->type);
return "unknown";
}
static int
netdev_vport_create(const struct netdev_class *netdev_class, const char *name,
struct netdev_dev **netdev_devp)
{
struct netdev_dev_vport *dev;
dev = xmalloc(sizeof *dev);
netdev_dev_init(&dev->netdev_dev, name, netdev_class);
dev->options = NULL;
dev->dp_ifindex = -1;
dev->port_no = UINT32_MAX;
dev->change_seq = 1;
*netdev_devp = &dev->netdev_dev;
route_table_register();
return 0;
}
static void
netdev_vport_destroy(struct netdev_dev *netdev_dev_)
{
struct netdev_dev_vport *netdev_dev = netdev_dev_vport_cast(netdev_dev_);
ofpbuf_delete(netdev_dev->options);
route_table_unregister();
free(netdev_dev);
}
static int
netdev_vport_open(struct netdev_dev *netdev_dev_, struct netdev **netdevp)
{
struct netdev_vport *netdev;
netdev = xmalloc(sizeof *netdev);
netdev_init(&netdev->netdev, netdev_dev_);
*netdevp = &netdev->netdev;
return 0;
}
static void
netdev_vport_close(struct netdev *netdev_)
{
struct netdev_vport *netdev = netdev_vport_cast(netdev_);
free(netdev);
}
static int
netdev_vport_get_config(struct netdev_dev *dev_, struct smap *args)
{
const struct netdev_class *netdev_class = netdev_dev_get_class(dev_);
const struct vport_class *vport_class = vport_class_cast(netdev_class);
struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
const char *name = netdev_dev_get_name(dev_);
int error;
if (!dev->options) {
struct dpif_linux_vport reply;
struct ofpbuf *buf;
error = dpif_linux_vport_get(name, &reply, &buf);
if (error) {
VLOG_ERR_RL(&rl, "%s: vport query failed (%s)",
name, strerror(error));
return error;
}
dev->options = ofpbuf_clone_data(reply.options, reply.options_len);
dev->dp_ifindex = reply.dp_ifindex;
dev->port_no = reply.port_no;
ofpbuf_delete(buf);
}
error = vport_class->unparse_config(name, netdev_class->type,
dev->options->data,
dev->options->size,
args);
if (error) {
VLOG_ERR_RL(&rl, "%s: failed to parse kernel config (%s)",
name, strerror(error));
}
return error;
}
static int
netdev_vport_set_config(struct netdev_dev *dev_, const struct smap *args)
{
const struct netdev_class *netdev_class = netdev_dev_get_class(dev_);
const struct vport_class *vport_class = vport_class_cast(netdev_class);
struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
const char *name = netdev_dev_get_name(dev_);
struct ofpbuf *options;
int error;
options = ofpbuf_new(64);
error = vport_class->parse_config(name, netdev_dev_get_type(dev_),
args, options);
if (!error
&& (!dev->options
|| options->size != dev->options->size
|| memcmp(options->data, dev->options->data, options->size))) {
struct dpif_linux_vport vport;
dpif_linux_vport_init(&vport);
vport.cmd = OVS_VPORT_CMD_SET;
vport.name = name;
vport.options = options->data;
vport.options_len = options->size;
error = dpif_linux_vport_transact(&vport, NULL, NULL);
if (!error || error == ENODEV) {
/* Either reconfiguration succeeded or this vport is not installed
* in the kernel (e.g. it hasn't been added to a dpif yet with
* dpif_port_add()). */
ofpbuf_delete(dev->options);
dev->options = options;
options = NULL;
error = 0;
}
}
ofpbuf_delete(options);
return error;
}
static int
netdev_vport_send(struct netdev *netdev, const void *data, size_t size)
{
struct netdev_dev *dev_ = netdev_get_dev(netdev);
struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_);
if (dev->dp_ifindex == -1) {
const char *name = netdev_get_name(netdev);
struct dpif_linux_vport reply;
struct ofpbuf *buf;
int error;
error = dpif_linux_vport_get(name, &reply, &buf);
if (error) {
VLOG_ERR_RL(&rl, "%s: failed to query vport for send (%s)",
name, strerror(error));
return error;
}
dev->dp_ifindex = reply.dp_ifindex;
dev->port_no = reply.port_no;
ofpbuf_delete(buf);
}
return dpif_linux_vport_send(dev->dp_ifindex, dev->port_no, data, size);
}
static int
netdev_vport_set_etheraddr(struct netdev *netdev,
const uint8_t mac[ETH_ADDR_LEN])
{
struct dpif_linux_vport vport;
int error;
dpif_linux_vport_init(&vport);
vport.cmd = OVS_VPORT_CMD_SET;
vport.name = netdev_get_name(netdev);
vport.address = mac;
error = dpif_linux_vport_transact(&vport, NULL, NULL);
if (!error) {
netdev_vport_poll_notify(netdev);
}
return error;
}
static int
netdev_vport_get_etheraddr(const struct netdev *netdev,
uint8_t mac[ETH_ADDR_LEN])
{
struct dpif_linux_vport reply;
struct ofpbuf *buf;
int error;
error = dpif_linux_vport_get(netdev_get_name(netdev), &reply, &buf);
if (!error) {
if (reply.address) {
memcpy(mac, reply.address, ETH_ADDR_LEN);
} else {
error = EOPNOTSUPP;
}
ofpbuf_delete(buf);
}
return error;
}
/* Copies 'src' into 'dst', performing format conversion in the process.
*
* 'src' is allowed to be misaligned. */
static void
netdev_stats_from_ovs_vport_stats(struct netdev_stats *dst,
const struct ovs_vport_stats *src)
{
dst->rx_packets = get_unaligned_u64(&src->rx_packets);
dst->tx_packets = get_unaligned_u64(&src->tx_packets);
dst->rx_bytes = get_unaligned_u64(&src->rx_bytes);
dst->tx_bytes = get_unaligned_u64(&src->tx_bytes);
dst->rx_errors = get_unaligned_u64(&src->rx_errors);
dst->tx_errors = get_unaligned_u64(&src->tx_errors);
dst->rx_dropped = get_unaligned_u64(&src->rx_dropped);
dst->tx_dropped = get_unaligned_u64(&src->tx_dropped);
dst->multicast = 0;
dst->collisions = 0;
dst->rx_length_errors = 0;
dst->rx_over_errors = 0;
dst->rx_crc_errors = 0;
dst->rx_frame_errors = 0;
dst->rx_fifo_errors = 0;
dst->rx_missed_errors = 0;
dst->tx_aborted_errors = 0;
dst->tx_carrier_errors = 0;
dst->tx_fifo_errors = 0;
dst->tx_heartbeat_errors = 0;
dst->tx_window_errors = 0;
}
/* Copies 'src' into 'dst', performing format conversion in the process. */
static void
netdev_stats_to_ovs_vport_stats(struct ovs_vport_stats *dst,
const struct netdev_stats *src)
{
dst->rx_packets = src->rx_packets;
dst->tx_packets = src->tx_packets;
dst->rx_bytes = src->rx_bytes;
dst->tx_bytes = src->tx_bytes;
dst->rx_errors = src->rx_errors;
dst->tx_errors = src->tx_errors;
dst->rx_dropped = src->rx_dropped;
dst->tx_dropped = src->tx_dropped;
}
int
netdev_vport_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
{
struct dpif_linux_vport reply;
struct ofpbuf *buf;
int error;
error = dpif_linux_vport_get(netdev_get_name(netdev), &reply, &buf);
if (error) {
return error;
} else if (!reply.stats) {
ofpbuf_delete(buf);
return EOPNOTSUPP;
}
netdev_stats_from_ovs_vport_stats(stats, reply.stats);
ofpbuf_delete(buf);
return 0;
}
int
netdev_vport_set_stats(struct netdev *netdev, const struct netdev_stats *stats)
{
struct ovs_vport_stats rtnl_stats;
struct dpif_linux_vport vport;
int err;
netdev_stats_to_ovs_vport_stats(&rtnl_stats, stats);
dpif_linux_vport_init(&vport);
vport.cmd = OVS_VPORT_CMD_SET;
vport.name = netdev_get_name(netdev);
vport.stats = &rtnl_stats;
err = dpif_linux_vport_transact(&vport, NULL, NULL);
/* If the vport layer doesn't know about the device, that doesn't mean it
* doesn't exist (after all were able to open it when netdev_open() was
* called), it just means that it isn't attached and we'll be getting
* stats a different way. */
if (err == ENODEV) {
err = EOPNOTSUPP;
}
return err;
}
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;
struct smap_node *node;
bool ipsec_mech_set = false;
ovs_be32 daddr = htonl(0);
ovs_be32 saddr = htonl(0);
uint32_t flags;
flags = TNL_F_DF_DEFAULT | TNL_F_PMTUD | TNL_F_HDR_CACHE;
if (!strcmp(type, "gre")) {
is_gre = true;
} else if (!strcmp(type, "ipsec_gre")) {
is_gre = true;
is_ipsec = true;
flags |= TNL_F_IPSEC;
flags &= ~TNL_F_HDR_CACHE;
}
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, "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, "false")) {
flags &= ~TNL_F_PMTUD;
}
} else if (!strcmp(node->key, "header_cache")) {
if (!strcmp(node->value, "false")) {
flags &= ~TNL_F_HDR_CACHE;
}
} 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);
}
}
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 },
};
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;
}
flags = nl_attr_get_u32(a[OVS_TUNNEL_ATTR_FLAGS]);
if (!(flags & TNL_F_HDR_CACHE) == !(flags & TNL_F_IPSEC)) {
smap_add(args, "header_cache",
flags & TNL_F_HDR_CACHE ? "true" : "false");
}
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);
}
}
}
if (flags & TNL_F_TTL_INHERIT) {
smap_add(args, "tos", "inherit");
} else if (a[OVS_TUNNEL_ATTR_TTL]) {
int ttl = nl_attr_get_u8(a[OVS_TUNNEL_ATTR_TTL]);
smap_add_format(args, "tos", "%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 (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", "false");
}
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_CAPWAP,
{ "capwap", 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);
}
}
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