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ovs/lib/netdev-vport.c
Daniele Di Proietto 9fff138ec3 netdev: Add 'errp' to set_config(). 
Since 55e075e65ef9("netdev-dpdk: Arbitrary 'dpdk' port naming"),
set_config() is used to identify a DPDK device, so it's better to report
its detailed error message to the user.  Tunnel devices and patch ports
rely a lot on set_config() as well.

This commit adds a param to set_config() that can be used to return
an error message and makes use of that in netdev-dpdk and netdev-vport.

Before this patch:

$ ovs-vsctl add-port br0 dpdk0 -- set Interface dpdk0 type=dpdk
ovs-vsctl: Error detected while setting up 'dpdk0': dpdk0: could not set
    configuration (Invalid argument).  See ovs-vswitchd log for details.
ovs-vsctl: The default log directory is "/var/log/openvswitch/".

$ ovs-vsctl add-port br0 p+ -- set Interface p+ type=patch
ovs-vsctl: Error detected while setting up 'p+': p+: could not set
    configuration (Invalid argument).  See ovs-vswitchd log for details.
ovs-vsctl: The default log directory is "/var/log/openvswitch/".

$ ovs-vsctl add-port br0 gnv0 -- set Interface gnv0 type=geneve
ovs-vsctl: Error detected while setting up 'gnv0': gnv0: could not set
    configuration (Invalid argument).  See ovs-vswitchd log for details.
ovs-vsctl: The default log directory is "/var/log/openvswitch/".

After this patch:

$ ovs-vsctl add-port br0 dpdk0 -- set Interface dpdk0 type=dpdk
ovs-vsctl: Error detected while setting up 'dpdk0': 'dpdk0' is missing
    'options:dpdk-devargs'. The old 'dpdk<port_id>' names are not
    supported.  See ovs-vswitchd log for details.
ovs-vsctl: The default log directory is "/var/log/openvswitch/".

$ ovs-vsctl add-port br0 p+ -- set Interface p+ type=patch
ovs-vsctl: Error detected while setting up 'p+': p+: patch type requires
    valid 'peer' argument.  See ovs-vswitchd log for details.
ovs-vsctl: The default log directory is "/var/log/openvswitch/".

$ ovs-vsctl add-port br0 gnv0 -- set Interface gnv0 type=geneve
ovs-vsctl: Error detected while setting up 'gnv0': gnv0: geneve type
    requires valid 'remote_ip' argument.  See ovs-vswitchd log for
    details.
ovs-vsctl: The default log directory is "/var/log/openvswitch/".

CC: Ciara Loftus <ciara.loftus@intel.com>
CC: Kevin Traynor <ktraynor@redhat.com>
Signed-off-by: Daniele Di Proietto <diproiettod@vmware.com>
Acked-by: Kevin Traynor <ktraynor@redhat.com>
Tested-by: Ciara Loftus <ciara.loftus@intel.com>
2017-01-11 18:29:39 -08:00

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/*
* Copyright (c) 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
* Copyright (c) 2016 Red Hat, 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 <net/if.h>
#include <netinet/in.h>
#include <netinet/ip6.h>
#include <sys/ioctl.h>
#include "byte-order.h"
#include "daemon.h"
#include "dirs.h"
#include "dpif.h"
#include "netdev.h"
#include "netdev-native-tnl.h"
#include "netdev-provider.h"
#include "netdev-vport-private.h"
#include "openvswitch/dynamic-string.h"
#include "ovs-router.h"
#include "packets.h"
#include "poll-loop.h"
#include "route-table.h"
#include "smap.h"
#include "socket-util.h"
#include "unaligned.h"
#include "unixctl.h"
#include "openvswitch/vlog.h"
VLOG_DEFINE_THIS_MODULE(netdev_vport);
#define GENEVE_DST_PORT 6081
#define VXLAN_DST_PORT 4789
#define LISP_DST_PORT 4341
#define STT_DST_PORT 7471
#define DEFAULT_TTL 64
/* Last read of the route-table's change number. */
static uint64_t rt_change_seqno;
static int get_patch_config(const struct netdev *netdev, struct smap *args);
static int get_tunnel_config(const struct netdev *, struct smap *args);
static bool tunnel_check_status_change__(struct netdev_vport *);
struct vport_class {
const char *dpif_port;
struct netdev_class netdev_class;
};
bool
netdev_vport_is_vport_class(const struct netdev_class *class)
{
return is_vport_class(class);
}
static const struct vport_class *
vport_class_cast(const struct netdev_class *class)
{
ovs_assert(is_vport_class(class));
return CONTAINER_OF(class, struct vport_class, netdev_class);
}
static const struct netdev_tunnel_config *
get_netdev_tunnel_config(const struct netdev *netdev)
{
return &netdev_vport_cast(netdev)->tnl_cfg;
}
bool
netdev_vport_is_patch(const struct netdev *netdev)
{
const struct netdev_class *class = netdev_get_class(netdev);
return class->get_config == get_patch_config;
}
bool
netdev_vport_is_layer3(const struct netdev *dev)
{
const char *type = netdev_get_type(dev);
return (!strcmp("lisp", type));
}
static bool
netdev_vport_needs_dst_port(const struct netdev *dev)
{
const struct netdev_class *class = netdev_get_class(dev);
const char *type = netdev_get_type(dev);
return (class->get_config == get_tunnel_config &&
(!strcmp("geneve", type) || !strcmp("vxlan", type) ||
!strcmp("lisp", type) || !strcmp("stt", type)) );
}
const char *
netdev_vport_class_get_dpif_port(const struct netdev_class *class)
{
return is_vport_class(class) ? vport_class_cast(class)->dpif_port : NULL;
}
const char *
netdev_vport_get_dpif_port(const struct netdev *netdev,
char namebuf[], size_t bufsize)
{
const struct netdev_class *class = netdev_get_class(netdev);
const char *dpif_port = netdev_vport_class_get_dpif_port(class);
if (!dpif_port) {
return netdev_get_name(netdev);
}
if (netdev_vport_needs_dst_port(netdev)) {
const struct netdev_vport *vport = netdev_vport_cast(netdev);
/*
* Note: IFNAMSIZ is 16 bytes long. Implementations should choose
* a dpif port name that is short enough to fit including any
* port numbers but assert just in case.
*/
BUILD_ASSERT(NETDEV_VPORT_NAME_BUFSIZE >= IFNAMSIZ);
ovs_assert(strlen(dpif_port) + 6 < IFNAMSIZ);
snprintf(namebuf, bufsize, "%s_%d", dpif_port,
ntohs(vport->tnl_cfg.dst_port));
return namebuf;
} else {
return dpif_port;
}
}
/* Whenever the route-table change number is incremented,
* netdev_vport_route_changed() should be called to update
* the corresponding tunnel interface status. */
static void
netdev_vport_route_changed(void)
{
struct netdev **vports;
size_t i, n_vports;
vports = netdev_get_vports(&n_vports);
for (i = 0; i < n_vports; i++) {
struct netdev *netdev_ = vports[i];
struct netdev_vport *netdev = netdev_vport_cast(netdev_);
ovs_mutex_lock(&netdev->mutex);
/* Finds all tunnel vports. */
if (ipv6_addr_is_set(&netdev->tnl_cfg.ipv6_dst)) {
if (tunnel_check_status_change__(netdev)) {
netdev_change_seq_changed(netdev_);
}
}
ovs_mutex_unlock(&netdev->mutex);
netdev_close(netdev_);
}
free(vports);
}
static struct netdev *
netdev_vport_alloc(void)
{
struct netdev_vport *netdev = xzalloc(sizeof *netdev);
return &netdev->up;
}
int
netdev_vport_construct(struct netdev *netdev_)
{
struct netdev_vport *dev = netdev_vport_cast(netdev_);
const char *type = netdev_get_type(netdev_);
ovs_mutex_init(&dev->mutex);
eth_addr_random(&dev->etheraddr);
/* Add a default destination port for tunnel ports if none specified. */
if (!strcmp(type, "geneve")) {
dev->tnl_cfg.dst_port = htons(GENEVE_DST_PORT);
} else if (!strcmp(type, "vxlan")) {
dev->tnl_cfg.dst_port = htons(VXLAN_DST_PORT);
} else if (!strcmp(type, "lisp")) {
dev->tnl_cfg.dst_port = htons(LISP_DST_PORT);
} else if (!strcmp(type, "stt")) {
dev->tnl_cfg.dst_port = htons(STT_DST_PORT);
}
dev->tnl_cfg.dont_fragment = true;
dev->tnl_cfg.ttl = DEFAULT_TTL;
return 0;
}
static void
netdev_vport_destruct(struct netdev *netdev_)
{
struct netdev_vport *netdev = netdev_vport_cast(netdev_);
free(netdev->peer);
ovs_mutex_destroy(&netdev->mutex);
}
static void
netdev_vport_dealloc(struct netdev *netdev_)
{
struct netdev_vport *netdev = netdev_vport_cast(netdev_);
free(netdev);
}
static int
netdev_vport_set_etheraddr(struct netdev *netdev_, const struct eth_addr mac)
{
struct netdev_vport *netdev = netdev_vport_cast(netdev_);
ovs_mutex_lock(&netdev->mutex);
netdev->etheraddr = mac;
ovs_mutex_unlock(&netdev->mutex);
netdev_change_seq_changed(netdev_);
return 0;
}
static int
netdev_vport_get_etheraddr(const struct netdev *netdev_, struct eth_addr *mac)
{
struct netdev_vport *netdev = netdev_vport_cast(netdev_);
ovs_mutex_lock(&netdev->mutex);
*mac = netdev->etheraddr;
ovs_mutex_unlock(&netdev->mutex);
return 0;
}
/* Checks if the tunnel status has changed and returns a boolean.
* Updates the tunnel status if it has changed. */
static bool
tunnel_check_status_change__(struct netdev_vport *netdev)
OVS_REQUIRES(netdev->mutex)
{
char iface[IFNAMSIZ];
bool status = false;
struct in6_addr *route;
struct in6_addr gw;
iface[0] = '\0';
route = &netdev->tnl_cfg.ipv6_dst;
if (ovs_router_lookup(route, iface, NULL, &gw)) {
struct netdev *egress_netdev;
if (!netdev_open(iface, NULL, &egress_netdev)) {
status = netdev_get_carrier(egress_netdev);
netdev_close(egress_netdev);
}
}
if (strcmp(netdev->egress_iface, iface)
|| netdev->carrier_status != status) {
ovs_strlcpy(netdev->egress_iface, iface, IFNAMSIZ);
netdev->carrier_status = status;
return true;
}
return false;
}
static int
tunnel_get_status(const struct netdev *netdev_, struct smap *smap)
{
struct netdev_vport *netdev = netdev_vport_cast(netdev_);
if (netdev->egress_iface[0]) {
smap_add(smap, "tunnel_egress_iface", netdev->egress_iface);
smap_add(smap, "tunnel_egress_iface_carrier",
netdev->carrier_status ? "up" : "down");
}
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 void
netdev_vport_run(const struct netdev_class *netdev_class OVS_UNUSED)
{
uint64_t seq;
route_table_run();
seq = route_table_get_change_seq();
if (rt_change_seqno != seq) {
rt_change_seqno = seq;
netdev_vport_route_changed();
}
}
static void
netdev_vport_wait(const struct netdev_class *netdev_class OVS_UNUSED)
{
uint64_t seq;
route_table_wait();
seq = route_table_get_change_seq();
if (rt_change_seqno != seq) {
poll_immediate_wake();
}
}
/* Code specific to tunnel types. */
static ovs_be64
parse_key(const struct smap *args, const char *name,
bool *present, bool *flow)
{
const char *s;
*present = false;
*flow = false;
s = smap_get(args, name);
if (!s) {
s = smap_get(args, "key");
if (!s) {
return 0;
}
}
*present = true;
if (!strcmp(s, "flow")) {
*flow = true;
return 0;
} else {
return htonll(strtoull(s, NULL, 0));
}
}
static int
parse_tunnel_ip(const char *value, bool accept_mcast, bool *flow,
struct in6_addr *ipv6, uint16_t *protocol)
{
if (!strcmp(value, "flow")) {
*flow = true;
*protocol = 0;
return 0;
}
if (addr_is_ipv6(value)) {
if (lookup_ipv6(value, ipv6)) {
return ENOENT;
}
if (!accept_mcast && ipv6_addr_is_multicast(ipv6)) {
return EINVAL;
}
*protocol = ETH_TYPE_IPV6;
} else {
struct in_addr ip;
if (lookup_ip(value, &ip)) {
return ENOENT;
}
if (!accept_mcast && ip_is_multicast(ip.s_addr)) {
return EINVAL;
}
in6_addr_set_mapped_ipv4(ipv6, ip.s_addr);
*protocol = ETH_TYPE_IP;
}
return 0;
}
static int
set_tunnel_config(struct netdev *dev_, const struct smap *args, char **errp)
{
struct netdev_vport *dev = netdev_vport_cast(dev_);
const char *name = netdev_get_name(dev_);
const char *type = netdev_get_type(dev_);
struct ds errors = DS_EMPTY_INITIALIZER;
bool needs_dst_port, has_csum;
uint16_t dst_proto = 0, src_proto = 0;
struct netdev_tunnel_config tnl_cfg;
struct smap_node *node;
int err;
has_csum = strstr(type, "gre") || strstr(type, "geneve") ||
strstr(type, "stt") || strstr(type, "vxlan");
memset(&tnl_cfg, 0, sizeof tnl_cfg);
/* Add a default destination port for tunnel ports if none specified. */
if (!strcmp(type, "geneve")) {
tnl_cfg.dst_port = htons(GENEVE_DST_PORT);
}
if (!strcmp(type, "vxlan")) {
tnl_cfg.dst_port = htons(VXLAN_DST_PORT);
}
if (!strcmp(type, "lisp")) {
tnl_cfg.dst_port = htons(LISP_DST_PORT);
}
if (!strcmp(type, "stt")) {
tnl_cfg.dst_port = htons(STT_DST_PORT);
}
needs_dst_port = netdev_vport_needs_dst_port(dev_);
tnl_cfg.dont_fragment = true;
SMAP_FOR_EACH (node, args) {
if (!strcmp(node->key, "remote_ip")) {
err = parse_tunnel_ip(node->value, false, &tnl_cfg.ip_dst_flow,
&tnl_cfg.ipv6_dst, &dst_proto);
switch (err) {
case ENOENT:
ds_put_format(&errors, "%s: bad %s 'remote_ip'\n", name, type);
break;
case EINVAL:
ds_put_format(&errors,
"%s: multicast remote_ip=%s not allowed\n",
name, node->value);
goto out;
}
} else if (!strcmp(node->key, "local_ip")) {
err = parse_tunnel_ip(node->value, true, &tnl_cfg.ip_src_flow,
&tnl_cfg.ipv6_src, &src_proto);
switch (err) {
case ENOENT:
ds_put_format(&errors, "%s: bad %s 'local_ip'\n", name, type);
break;
}
} else if (!strcmp(node->key, "tos")) {
if (!strcmp(node->value, "inherit")) {
tnl_cfg.tos_inherit = true;
} else {
char *endptr;
int tos;
tos = strtol(node->value, &endptr, 0);
if (*endptr == '\0' && tos == (tos & IP_DSCP_MASK)) {
tnl_cfg.tos = tos;
} else {
ds_put_format(&errors, "%s: invalid TOS %s\n", name,
node->value);
}
}
} else if (!strcmp(node->key, "ttl")) {
if (!strcmp(node->value, "inherit")) {
tnl_cfg.ttl_inherit = true;
} else {
tnl_cfg.ttl = atoi(node->value);
}
} else if (!strcmp(node->key, "dst_port") && needs_dst_port) {
tnl_cfg.dst_port = htons(atoi(node->value));
} else if (!strcmp(node->key, "csum") && has_csum) {
if (!strcmp(node->value, "true")) {
tnl_cfg.csum = true;
}
} else if (!strcmp(node->key, "df_default")) {
if (!strcmp(node->value, "false")) {
tnl_cfg.dont_fragment = false;
}
} else if (!strcmp(node->key, "key") ||
!strcmp(node->key, "in_key") ||
!strcmp(node->key, "out_key")) {
/* Handled separately below. */
} else if (!strcmp(node->key, "exts")) {
char *str = xstrdup(node->value);
char *ext, *save_ptr = NULL;
tnl_cfg.exts = 0;
ext = strtok_r(str, ",", &save_ptr);
while (ext) {
if (!strcmp(type, "vxlan") && !strcmp(ext, "gbp")) {
tnl_cfg.exts |= (1 << OVS_VXLAN_EXT_GBP);
} else {
ds_put_format(&errors, "%s: unknown extension '%s'\n",
name, ext);
}
ext = strtok_r(NULL, ",", &save_ptr);
}
free(str);
} else {
ds_put_format(&errors, "%s: unknown %s argument '%s'\n",
name, type, node->key);
}
}
if (!ipv6_addr_is_set(&tnl_cfg.ipv6_dst) && !tnl_cfg.ip_dst_flow) {
ds_put_format(&errors,
"%s: %s type requires valid 'remote_ip' argument\n",
name, type);
err = EINVAL;
goto out;
}
if (tnl_cfg.ip_src_flow && !tnl_cfg.ip_dst_flow) {
ds_put_format(&errors,
"%s: %s type requires 'remote_ip=flow' "
"with 'local_ip=flow'\n",
name, type);
err = EINVAL;
goto out;
}
if (src_proto && dst_proto && src_proto != dst_proto) {
ds_put_format(&errors,
"%s: 'remote_ip' and 'local_ip' "
"has to be of the same address family\n",
name);
err = EINVAL;
goto out;
}
if (!tnl_cfg.ttl) {
tnl_cfg.ttl = DEFAULT_TTL;
}
tnl_cfg.in_key = parse_key(args, "in_key",
&tnl_cfg.in_key_present,
&tnl_cfg.in_key_flow);
tnl_cfg.out_key = parse_key(args, "out_key",
&tnl_cfg.out_key_present,
&tnl_cfg.out_key_flow);
ovs_mutex_lock(&dev->mutex);
if (memcmp(&dev->tnl_cfg, &tnl_cfg, sizeof tnl_cfg)) {
dev->tnl_cfg = tnl_cfg;
tunnel_check_status_change__(dev);
netdev_change_seq_changed(dev_);
}
ovs_mutex_unlock(&dev->mutex);
err = 0;
out:
ds_chomp(&errors, '\n');
VLOG_WARN("%s", ds_cstr(&errors));
if (err) {
*errp = ds_steal_cstr(&errors);
}
ds_destroy(&errors);
return err;
}
static int
get_tunnel_config(const struct netdev *dev, struct smap *args)
{
struct netdev_vport *netdev = netdev_vport_cast(dev);
struct netdev_tunnel_config tnl_cfg;
ovs_mutex_lock(&netdev->mutex);
tnl_cfg = netdev->tnl_cfg;
ovs_mutex_unlock(&netdev->mutex);
if (ipv6_addr_is_set(&tnl_cfg.ipv6_dst)) {
smap_add_ipv6(args, "remote_ip", &tnl_cfg.ipv6_dst);
} else if (tnl_cfg.ip_dst_flow) {
smap_add(args, "remote_ip", "flow");
}
if (ipv6_addr_is_set(&tnl_cfg.ipv6_src)) {
smap_add_ipv6(args, "local_ip", &tnl_cfg.ipv6_src);
} else if (tnl_cfg.ip_src_flow) {
smap_add(args, "local_ip", "flow");
}
if (tnl_cfg.in_key_flow && tnl_cfg.out_key_flow) {
smap_add(args, "key", "flow");
} else if (tnl_cfg.in_key_present && tnl_cfg.out_key_present
&& tnl_cfg.in_key == tnl_cfg.out_key) {
smap_add_format(args, "key", "%"PRIu64, ntohll(tnl_cfg.in_key));
} else {
if (tnl_cfg.in_key_flow) {
smap_add(args, "in_key", "flow");
} else if (tnl_cfg.in_key_present) {
smap_add_format(args, "in_key", "%"PRIu64,
ntohll(tnl_cfg.in_key));
}
if (tnl_cfg.out_key_flow) {
smap_add(args, "out_key", "flow");
} else if (tnl_cfg.out_key_present) {
smap_add_format(args, "out_key", "%"PRIu64,
ntohll(tnl_cfg.out_key));
}
}
if (tnl_cfg.ttl_inherit) {
smap_add(args, "ttl", "inherit");
} else if (tnl_cfg.ttl != DEFAULT_TTL) {
smap_add_format(args, "ttl", "%"PRIu8, tnl_cfg.ttl);
}
if (tnl_cfg.tos_inherit) {
smap_add(args, "tos", "inherit");
} else if (tnl_cfg.tos) {
smap_add_format(args, "tos", "0x%x", tnl_cfg.tos);
}
if (tnl_cfg.dst_port) {
uint16_t dst_port = ntohs(tnl_cfg.dst_port);
const char *type = netdev_get_type(dev);
if ((!strcmp("geneve", type) && dst_port != GENEVE_DST_PORT) ||
(!strcmp("vxlan", type) && dst_port != VXLAN_DST_PORT) ||
(!strcmp("lisp", type) && dst_port != LISP_DST_PORT) ||
(!strcmp("stt", type) && dst_port != STT_DST_PORT)) {
smap_add_format(args, "dst_port", "%d", dst_port);
}
}
if (tnl_cfg.csum) {
smap_add(args, "csum", "true");
}
if (!tnl_cfg.dont_fragment) {
smap_add(args, "df_default", "false");
}
return 0;
}
/* Code specific to patch ports. */
/* If 'netdev' is a patch port, returns the name of its peer as a malloc()'d
* string that the caller must free.
*
* If 'netdev' is not a patch port, returns NULL. */
char *
netdev_vport_patch_peer(const struct netdev *netdev_)
{
char *peer = NULL;
if (netdev_vport_is_patch(netdev_)) {
struct netdev_vport *netdev = netdev_vport_cast(netdev_);
ovs_mutex_lock(&netdev->mutex);
if (netdev->peer) {
peer = xstrdup(netdev->peer);
}
ovs_mutex_unlock(&netdev->mutex);
}
return peer;
}
void
netdev_vport_inc_rx(const struct netdev *netdev,
const struct dpif_flow_stats *stats)
{
if (is_vport_class(netdev_get_class(netdev))) {
struct netdev_vport *dev = netdev_vport_cast(netdev);
ovs_mutex_lock(&dev->mutex);
dev->stats.rx_packets += stats->n_packets;
dev->stats.rx_bytes += stats->n_bytes;
ovs_mutex_unlock(&dev->mutex);
}
}
void
netdev_vport_inc_tx(const struct netdev *netdev,
const struct dpif_flow_stats *stats)
{
if (is_vport_class(netdev_get_class(netdev))) {
struct netdev_vport *dev = netdev_vport_cast(netdev);
ovs_mutex_lock(&dev->mutex);
dev->stats.tx_packets += stats->n_packets;
dev->stats.tx_bytes += stats->n_bytes;
ovs_mutex_unlock(&dev->mutex);
}
}
static int
get_patch_config(const struct netdev *dev_, struct smap *args)
{
struct netdev_vport *dev = netdev_vport_cast(dev_);
ovs_mutex_lock(&dev->mutex);
if (dev->peer) {
smap_add(args, "peer", dev->peer);
}
ovs_mutex_unlock(&dev->mutex);
return 0;
}
static int
set_patch_config(struct netdev *dev_, const struct smap *args, char **errp)
{
struct netdev_vport *dev = netdev_vport_cast(dev_);
const char *name = netdev_get_name(dev_);
const char *peer;
peer = smap_get(args, "peer");
if (!peer) {
VLOG_ERR_BUF(errp, "%s: patch type requires valid 'peer' argument",
name);
return EINVAL;
}
if (smap_count(args) > 1) {
VLOG_ERR_BUF(errp, "%s: patch type takes only a 'peer' argument",
name);
return EINVAL;
}
if (!strcmp(name, peer)) {
VLOG_ERR_BUF(errp, "%s: patch peer must not be self", name);
return EINVAL;
}
ovs_mutex_lock(&dev->mutex);
if (!dev->peer || strcmp(dev->peer, peer)) {
free(dev->peer);
dev->peer = xstrdup(peer);
netdev_change_seq_changed(dev_);
}
ovs_mutex_unlock(&dev->mutex);
return 0;
}
static int
get_stats(const struct netdev *netdev, struct netdev_stats *stats)
{
struct netdev_vport *dev = netdev_vport_cast(netdev);
ovs_mutex_lock(&dev->mutex);
/* Passing only collected counters */
stats->tx_packets = dev->stats.tx_packets;
stats->tx_bytes = dev->stats.tx_bytes;
stats->rx_packets = dev->stats.rx_packets;
stats->rx_bytes = dev->stats.rx_bytes;
ovs_mutex_unlock(&dev->mutex);
return 0;
}
#define VPORT_FUNCTIONS(GET_CONFIG, SET_CONFIG, \
GET_TUNNEL_CONFIG, GET_STATUS, \
BUILD_HEADER, \
PUSH_HEADER, POP_HEADER) \
NULL, \
netdev_vport_run, \
netdev_vport_wait, \
\
netdev_vport_alloc, \
netdev_vport_construct, \
netdev_vport_destruct, \
netdev_vport_dealloc, \
GET_CONFIG, \
SET_CONFIG, \
GET_TUNNEL_CONFIG, \
BUILD_HEADER, \
PUSH_HEADER, \
POP_HEADER, \
NULL, /* get_numa_id */ \
NULL, /* set_tx_multiq */ \
\
NULL, /* 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 */ \
get_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, /* queue_dump_start */ \
NULL, /* queue_dump_next */ \
NULL, /* queue_dump_done */ \
NULL, /* dump_queue_stats */ \
\
NULL, /* set_in4 */ \
NULL, /* get_addr_list */ \
NULL, /* add_router */ \
NULL, /* get_next_hop */ \
GET_STATUS, \
NULL, /* arp_lookup */ \
\
netdev_vport_update_flags, \
NULL, /* reconfigure */ \
\
NULL, /* rx_alloc */ \
NULL, /* rx_construct */ \
NULL, /* rx_destruct */ \
NULL, /* rx_dealloc */ \
NULL, /* rx_recv */ \
NULL, /* rx_wait */ \
NULL, /* rx_drain */
#define TUNNEL_CLASS(NAME, DPIF_PORT, BUILD_HEADER, PUSH_HEADER, POP_HEADER) \
{ DPIF_PORT, \
{ NAME, false, \
VPORT_FUNCTIONS(get_tunnel_config, \
set_tunnel_config, \
get_netdev_tunnel_config, \
tunnel_get_status, \
BUILD_HEADER, PUSH_HEADER, POP_HEADER) }}
void
netdev_vport_tunnel_register(void)
{
/* The name of the dpif_port should be short enough to accomodate adding
* a port number to the end if one is necessary. */
static const struct vport_class vport_classes[] = {
TUNNEL_CLASS("geneve", "genev_sys", netdev_geneve_build_header,
netdev_tnl_push_udp_header,
netdev_geneve_pop_header),
TUNNEL_CLASS("gre", "gre_sys", netdev_gre_build_header,
netdev_gre_push_header,
netdev_gre_pop_header),
TUNNEL_CLASS("vxlan", "vxlan_sys", netdev_vxlan_build_header,
netdev_tnl_push_udp_header,
netdev_vxlan_pop_header),
TUNNEL_CLASS("lisp", "lisp_sys", NULL, NULL, NULL),
TUNNEL_CLASS("stt", "stt_sys", NULL, NULL, NULL),
};
static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
if (ovsthread_once_start(&once)) {
int i;
for (i = 0; i < ARRAY_SIZE(vport_classes); i++) {
netdev_register_provider(&vport_classes[i].netdev_class);
}
unixctl_command_register("tnl/egress_port_range", "min max", 0, 2,
netdev_tnl_egress_port_range, NULL);
ovsthread_once_done(&once);
}
}
void
netdev_vport_patch_register(void)
{
static const struct vport_class patch_class =
{ NULL,
{ "patch", false,
VPORT_FUNCTIONS(get_patch_config,
set_patch_config,
NULL,
NULL, NULL, NULL, NULL) }};
netdev_register_provider(&patch_class.netdev_class);
}
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