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NetworkManager/src/devices/nm-device-ip-tunnel.c
Beniamino Galvani ad3fdcd90d device: allow reapply of MTU 
The MTU is reapplied together with IP configuration: modify device
subclasses to announce they support the property in
can_reapply_change().
2017-03-09 21:58:28 +01:00

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager -- Network link manager
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright 2015 Red Hat, Inc.
*/
#include "nm-default.h"
#include "nm-device-ip-tunnel.h"
#include <string.h>
#include <netinet/in.h>
#include <linux/if.h>
#include <linux/ip.h>
#include <linux/if_tunnel.h>
#include "nm-device-private.h"
#include "nm-manager.h"
#include "platform/nm-platform.h"
#include "nm-device-factory.h"
#include "nm-core-internal.h"
#include "settings/nm-settings.h"
#include "nm-act-request.h"
#include "nm-ip4-config.h"
#include "introspection/org.freedesktop.NetworkManager.Device.IPTunnel.h"
#include "nm-device-logging.h"
_LOG_DECLARE_SELF(NMDeviceIPTunnel);
/*****************************************************************************/
NM_GOBJECT_PROPERTIES_DEFINE (NMDeviceIPTunnel,
PROP_MODE,
PROP_LOCAL,
PROP_REMOTE,
PROP_TTL,
PROP_TOS,
PROP_PATH_MTU_DISCOVERY,
PROP_INPUT_KEY,
PROP_OUTPUT_KEY,
PROP_ENCAPSULATION_LIMIT,
PROP_FLOW_LABEL,
);
typedef struct {
NMIPTunnelMode mode;
char *local;
char *remote;
guint8 ttl;
guint8 tos;
gboolean path_mtu_discovery;
int addr_family;
char *input_key;
char *output_key;
guint8 encap_limit;
guint32 flow_label;
} NMDeviceIPTunnelPrivate;
struct _NMDeviceIPTunnel {
NMDevice parent;
NMDeviceIPTunnelPrivate _priv;
};
struct _NMDeviceIPTunnelClass {
NMDeviceClass parent;
};
G_DEFINE_TYPE (NMDeviceIPTunnel, nm_device_ip_tunnel, NM_TYPE_DEVICE)
#define NM_DEVICE_IP_TUNNEL_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDeviceIPTunnel, NM_IS_DEVICE_IP_TUNNEL)
/*****************************************************************************/
static gboolean
address_equal_pp (int family, const char *a, const char *b)
{
char buffer1[sizeof (struct in6_addr)] = { };
char buffer2[sizeof (struct in6_addr)] = { };
g_return_val_if_fail (family == AF_INET || family == AF_INET6, FALSE);
if (a)
inet_pton (family, a, buffer1);
if (b)
inet_pton (family, b, buffer2);
return !memcmp (buffer1, buffer2,
family == AF_INET ? sizeof (in_addr_t) : sizeof (struct in6_addr));
}
static gboolean
address_equal_pn (int family, const char *a, const void *b)
{
char buffer1[sizeof (struct in6_addr)] = { };
g_return_val_if_fail (family == AF_INET || family == AF_INET6, FALSE);
if (a)
inet_pton (family, a, buffer1);
return !memcmp (buffer1, b,
family == AF_INET ? sizeof (in_addr_t) : sizeof (struct in6_addr));
}
static void
update_properties_from_ifindex (NMDevice *device, int ifindex)
{
NMDeviceIPTunnel *self = NM_DEVICE_IP_TUNNEL (device);
NMDeviceIPTunnelPrivate *priv = NM_DEVICE_IP_TUNNEL_GET_PRIVATE (self);
int parent_ifindex = 0;
in_addr_t local4, remote4;
struct in6_addr local6, remote6;
guint8 ttl = 0, tos = 0, encap_limit = 0;
gboolean pmtud = FALSE;
guint32 flow_label = 0;
char *key;
if (ifindex <= 0) {
clear:
nm_device_parent_set_ifindex (device, 0);
if (priv->local) {
g_clear_pointer (&priv->local, g_free);
_notify (self, PROP_LOCAL);
}
if (priv->remote) {
g_clear_pointer (&priv->remote, g_free);
_notify (self, PROP_REMOTE);
}
if (priv->input_key) {
g_clear_pointer (&priv->input_key, g_free);
_notify (self, PROP_INPUT_KEY);
}
if (priv->output_key) {
g_clear_pointer (&priv->output_key, g_free);
_notify (self, PROP_OUTPUT_KEY);
}
goto out;
}
if (priv->mode == NM_IP_TUNNEL_MODE_GRE) {
const NMPlatformLnkGre *lnk;
lnk = nm_platform_link_get_lnk_gre (NM_PLATFORM_GET, ifindex, NULL);
if (!lnk) {
_LOGW (LOGD_PLATFORM, "could not read %s properties", "gre");
goto clear;
}
parent_ifindex = lnk->parent_ifindex;
local4 = lnk->local;
remote4 = lnk->remote;
ttl = lnk->ttl;
tos = lnk->tos;
pmtud = lnk->path_mtu_discovery;
if (NM_FLAGS_HAS (lnk->input_flags, NM_GRE_KEY)) {
key = g_strdup_printf ("%u", lnk->input_key);
if (g_strcmp0 (priv->input_key, key)) {
g_free (priv->input_key);
priv->input_key = key;
_notify (self, PROP_INPUT_KEY);
} else
g_free (key);
} else {
if (priv->input_key) {
g_clear_pointer (&priv->input_key, g_free);
_notify (self, PROP_INPUT_KEY);
}
}
if (NM_FLAGS_HAS (lnk->output_flags, NM_GRE_KEY)) {
key = g_strdup_printf ("%u", lnk->output_key);
if (g_strcmp0 (priv->output_key, key)) {
g_free (priv->output_key);
priv->output_key = key;
_notify (self, PROP_OUTPUT_KEY);
} else
g_free (key);
} else {
if (priv->output_key) {
g_clear_pointer (&priv->output_key, g_free);
_notify (self, PROP_OUTPUT_KEY);
}
}
} else if (priv->mode == NM_IP_TUNNEL_MODE_SIT) {
const NMPlatformLnkSit *lnk;
lnk = nm_platform_link_get_lnk_sit (NM_PLATFORM_GET, ifindex, NULL);
if (!lnk) {
_LOGW (LOGD_PLATFORM, "could not read %s properties", "sit");
goto clear;
}
parent_ifindex = lnk->parent_ifindex;
local4 = lnk->local;
remote4 = lnk->remote;
ttl = lnk->ttl;
tos = lnk->tos;
pmtud = lnk->path_mtu_discovery;
} else if (priv->mode == NM_IP_TUNNEL_MODE_IPIP) {
const NMPlatformLnkIpIp *lnk;
lnk = nm_platform_link_get_lnk_ipip (NM_PLATFORM_GET, ifindex, NULL);
if (!lnk) {
_LOGW (LOGD_PLATFORM, "could not read %s properties", "ipip");
goto clear;
}
parent_ifindex = lnk->parent_ifindex;
local4 = lnk->local;
remote4 = lnk->remote;
ttl = lnk->ttl;
tos = lnk->tos;
pmtud = lnk->path_mtu_discovery;
} else if ( priv->mode == NM_IP_TUNNEL_MODE_IPIP6
|| priv->mode == NM_IP_TUNNEL_MODE_IP6IP6) {
const NMPlatformLnkIp6Tnl *lnk;
lnk = nm_platform_link_get_lnk_ip6tnl (NM_PLATFORM_GET, ifindex, NULL);
if (!lnk) {
_LOGW (LOGD_PLATFORM, "could not read %s properties", "ip6tnl");
goto clear;
}
parent_ifindex = lnk->parent_ifindex;
local6 = lnk->local;
remote6 = lnk->remote;
ttl = lnk->ttl;
tos = lnk->tclass;
encap_limit = lnk->encap_limit;
flow_label = lnk->flow_label;
} else
g_return_if_reached ();
nm_device_parent_set_ifindex (device, parent_ifindex);
if (priv->addr_family == AF_INET) {
if (!address_equal_pn (AF_INET, priv->local, &local4)) {
g_clear_pointer (&priv->local, g_free);
if (local4)
priv->local = g_strdup (nm_utils_inet4_ntop (local4, NULL));
_notify (self, PROP_LOCAL);
}
if (!address_equal_pn (AF_INET, priv->remote, &remote4)) {
g_clear_pointer (&priv->remote, g_free);
if (remote4)
priv->remote = g_strdup (nm_utils_inet4_ntop (remote4, NULL));
_notify (self, PROP_REMOTE);
}
} else {
if (!address_equal_pn (AF_INET6, priv->local, &local6)) {
g_clear_pointer (&priv->local, g_free);
if (memcmp (&local6, &in6addr_any, sizeof (in6addr_any)))
priv->local = g_strdup (nm_utils_inet6_ntop (&local6, NULL));
_notify (self, PROP_LOCAL);
}
if (!address_equal_pn (AF_INET6, priv->remote, &remote6)) {
g_clear_pointer (&priv->remote, g_free);
if (memcmp (&remote6, &in6addr_any, sizeof (in6addr_any)))
priv->remote = g_strdup (nm_utils_inet6_ntop (&remote6, NULL));
_notify (self, PROP_REMOTE);
}
}
out:
if (priv->ttl != ttl) {
priv->ttl = ttl;
_notify (self, PROP_TTL);
}
if (priv->tos != tos) {
priv->tos = tos;
_notify (self, PROP_TOS);
}
if (priv->path_mtu_discovery != pmtud) {
priv->path_mtu_discovery = pmtud;
_notify (self, PROP_PATH_MTU_DISCOVERY);
}
if (priv->encap_limit != encap_limit) {
priv->encap_limit = encap_limit;
_notify (self, PROP_ENCAPSULATION_LIMIT);
}
if (priv->flow_label != flow_label) {
priv->flow_label = flow_label;
_notify (self, PROP_FLOW_LABEL);
}
}
static void
update_properties (NMDevice *device)
{
update_properties_from_ifindex (device, nm_device_get_ifindex (device));
}
static void
link_changed (NMDevice *device,
const NMPlatformLink *pllink)
{
NM_DEVICE_CLASS (nm_device_ip_tunnel_parent_class)->link_changed (device, pllink);
update_properties (device);
}
static gboolean
complete_connection (NMDevice *device,
NMConnection *connection,
const char *specific_object,
const GSList *existing_connections,
GError **error)
{
NMSettingIPTunnel *s_ip_tunnel;
nm_utils_complete_generic (NM_PLATFORM_GET,
connection,
NM_SETTING_IP_TUNNEL_SETTING_NAME,
existing_connections,
NULL,
_("IP tunnel connection"),
NULL,
TRUE);
s_ip_tunnel = nm_connection_get_setting_ip_tunnel (connection);
if (!s_ip_tunnel) {
g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INVALID_CONNECTION,
"A 'tunnel' setting is required.");
return FALSE;
}
return TRUE;
}
static void
update_connection (NMDevice *device, NMConnection *connection)
{
NMDeviceIPTunnel *self = NM_DEVICE_IP_TUNNEL (device);
NMDeviceIPTunnelPrivate *priv = NM_DEVICE_IP_TUNNEL_GET_PRIVATE (self);
NMSettingIPTunnel *s_ip_tunnel = nm_connection_get_setting_ip_tunnel (connection);
NMDevice *parent = NULL;
const char *setting_parent, *new_parent;
if (!s_ip_tunnel) {
s_ip_tunnel = (NMSettingIPTunnel *) nm_setting_ip_tunnel_new ();
nm_connection_add_setting (connection, (NMSetting *) s_ip_tunnel);
}
if (nm_setting_ip_tunnel_get_mode (s_ip_tunnel) != priv->mode)
g_object_set (G_OBJECT (s_ip_tunnel), NM_SETTING_IP_TUNNEL_MODE, priv->mode, NULL);
parent = nm_device_parent_get_device (device);
/* Update parent in the connection; default to parent's interface name */
if (parent) {
new_parent = nm_device_get_iface (parent);
setting_parent = nm_setting_ip_tunnel_get_parent (s_ip_tunnel);
if (setting_parent && nm_utils_is_uuid (setting_parent)) {
NMConnection *parent_connection;
/* Don't change a parent specified by UUID if it's still valid */
parent_connection = (NMConnection *) nm_settings_get_connection_by_uuid (nm_device_get_settings (device),
setting_parent);
if (parent_connection && nm_device_check_connection_compatible (parent, parent_connection))
new_parent = NULL;
}
if (new_parent)
g_object_set (s_ip_tunnel, NM_SETTING_IP_TUNNEL_PARENT, new_parent, NULL);
} else
g_object_set (s_ip_tunnel, NM_SETTING_IP_TUNNEL_PARENT, NULL, NULL);
if (!address_equal_pp (priv->addr_family,
nm_setting_ip_tunnel_get_local (s_ip_tunnel),
priv->local))
g_object_set (G_OBJECT (s_ip_tunnel), NM_SETTING_IP_TUNNEL_LOCAL, priv->local, NULL);
if (!address_equal_pp (priv->addr_family,
nm_setting_ip_tunnel_get_remote (s_ip_tunnel),
priv->remote))
g_object_set (G_OBJECT (s_ip_tunnel), NM_SETTING_IP_TUNNEL_REMOTE, priv->remote, NULL);
if (nm_setting_ip_tunnel_get_ttl (s_ip_tunnel) != priv->ttl)
g_object_set (G_OBJECT (s_ip_tunnel), NM_SETTING_IP_TUNNEL_TTL, priv->ttl, NULL);
if (nm_setting_ip_tunnel_get_tos (s_ip_tunnel) != priv->tos)
g_object_set (G_OBJECT (s_ip_tunnel), NM_SETTING_IP_TUNNEL_TOS, priv->tos, NULL);
if (nm_setting_ip_tunnel_get_path_mtu_discovery (s_ip_tunnel) != priv->path_mtu_discovery) {
g_object_set (G_OBJECT (s_ip_tunnel),
NM_SETTING_IP_TUNNEL_PATH_MTU_DISCOVERY,
priv->path_mtu_discovery,
NULL);
}
if (nm_setting_ip_tunnel_get_encapsulation_limit (s_ip_tunnel) != priv->encap_limit) {
g_object_set (G_OBJECT (s_ip_tunnel),
NM_SETTING_IP_TUNNEL_ENCAPSULATION_LIMIT,
priv->encap_limit,
NULL);
}
if (nm_setting_ip_tunnel_get_flow_label (s_ip_tunnel) != priv->flow_label) {
g_object_set (G_OBJECT (s_ip_tunnel),
NM_SETTING_IP_TUNNEL_FLOW_LABEL,
priv->flow_label,
NULL);
}
if (priv->mode == NM_IP_TUNNEL_MODE_GRE || priv->mode == NM_IP_TUNNEL_MODE_IP6GRE) {
if (g_strcmp0 (nm_setting_ip_tunnel_get_input_key (s_ip_tunnel), priv->input_key)) {
g_object_set (G_OBJECT (s_ip_tunnel),
NM_SETTING_IP_TUNNEL_INPUT_KEY,
priv->input_key,
NULL);
}
if (g_strcmp0 (nm_setting_ip_tunnel_get_output_key (s_ip_tunnel), priv->output_key)) {
g_object_set (G_OBJECT (s_ip_tunnel),
NM_SETTING_IP_TUNNEL_OUTPUT_KEY,
priv->output_key,
NULL);
}
}
}
static gboolean
match_parent (NMDevice *dev_parent, const char *setting_parent)
{
g_return_val_if_fail (setting_parent, FALSE);
if (!dev_parent)
return FALSE;
if (nm_utils_is_uuid (setting_parent)) {
NMActRequest *parent_req;
NMConnection *parent_connection;
/* If the parent is a UUID, the connection matches if our parent
* device has that connection activated.
*/
parent_req = nm_device_get_act_request (dev_parent);
if (!parent_req)
return FALSE;
parent_connection = nm_active_connection_get_applied_connection (NM_ACTIVE_CONNECTION (parent_req));
if (!parent_connection)
return FALSE;
if (g_strcmp0 (setting_parent, nm_connection_get_uuid (parent_connection)) != 0)
return FALSE;
} else {
/* interface name */
if (g_strcmp0 (setting_parent, nm_device_get_ip_iface (dev_parent)) != 0)
return FALSE;
}
return TRUE;
}
static gboolean
check_connection_compatible (NMDevice *device, NMConnection *connection)
{
NMDeviceIPTunnel *self = NM_DEVICE_IP_TUNNEL (device);
NMDeviceIPTunnelPrivate *priv = NM_DEVICE_IP_TUNNEL_GET_PRIVATE (self);
NMSettingIPTunnel *s_ip_tunnel;
const char *parent;
if (!NM_DEVICE_CLASS (nm_device_ip_tunnel_parent_class)->check_connection_compatible (device, connection))
return FALSE;
s_ip_tunnel = nm_connection_get_setting_ip_tunnel (connection);
if (!s_ip_tunnel)
return FALSE;
if (nm_setting_ip_tunnel_get_mode (s_ip_tunnel) != priv->mode)
return FALSE;
if (nm_device_is_real (device)) {
/* Check parent interface; could be an interface name or a UUID */
parent = nm_setting_ip_tunnel_get_parent (s_ip_tunnel);
if (parent) {
if (!match_parent (nm_device_parent_get_device (device), parent))
return FALSE;
}
if (!address_equal_pp (priv->addr_family,
nm_setting_ip_tunnel_get_local (s_ip_tunnel),
priv->local))
return FALSE;
if (!address_equal_pp (priv->addr_family,
nm_setting_ip_tunnel_get_remote (s_ip_tunnel),
priv->remote))
return FALSE;
if (nm_setting_ip_tunnel_get_ttl (s_ip_tunnel) != priv->ttl)
return FALSE;
if (nm_setting_ip_tunnel_get_tos (s_ip_tunnel) != priv->tos)
return FALSE;
if (priv->addr_family == AF_INET) {
if (nm_setting_ip_tunnel_get_path_mtu_discovery (s_ip_tunnel) != priv->path_mtu_discovery)
return FALSE;
} else {
if (nm_setting_ip_tunnel_get_encapsulation_limit (s_ip_tunnel) != priv->encap_limit)
return FALSE;
if (nm_setting_ip_tunnel_get_flow_label (s_ip_tunnel) != priv->flow_label)
return FALSE;
}
}
return TRUE;
}
static NMIPTunnelMode
platform_link_to_tunnel_mode (const NMPlatformLink *link)
{
const NMPlatformLnkIp6Tnl *lnk;
switch (link->type) {
case NM_LINK_TYPE_GRE:
return NM_IP_TUNNEL_MODE_GRE;
case NM_LINK_TYPE_IP6TNL:
lnk = nm_platform_link_get_lnk_ip6tnl (NM_PLATFORM_GET, link->ifindex, NULL);
if (lnk) {
if (lnk->proto == IPPROTO_IPIP)
return NM_IP_TUNNEL_MODE_IPIP6;
if (lnk->proto == IPPROTO_IPV6)
return NM_IP_TUNNEL_MODE_IP6IP6;
}
return NM_IP_TUNNEL_MODE_UNKNOWN;
case NM_LINK_TYPE_IPIP:
return NM_IP_TUNNEL_MODE_IPIP;
case NM_LINK_TYPE_SIT:
return NM_IP_TUNNEL_MODE_SIT;
default:
g_return_val_if_reached (NM_IP_TUNNEL_MODE_UNKNOWN);
}
}
static NMLinkType
tunnel_mode_to_link_type (NMIPTunnelMode tunnel_mode)
{
switch (tunnel_mode) {
case NM_IP_TUNNEL_MODE_GRE:
return NM_LINK_TYPE_GRE;
case NM_IP_TUNNEL_MODE_IPIP6:
case NM_IP_TUNNEL_MODE_IP6IP6:
return NM_LINK_TYPE_IP6TNL;
case NM_IP_TUNNEL_MODE_IPIP:
return NM_LINK_TYPE_IPIP;
case NM_IP_TUNNEL_MODE_SIT:
return NM_LINK_TYPE_SIT;
case NM_IP_TUNNEL_MODE_VTI:
case NM_IP_TUNNEL_MODE_IP6GRE:
case NM_IP_TUNNEL_MODE_VTI6:
case NM_IP_TUNNEL_MODE_ISATAP:
return NM_LINK_TYPE_UNKNOWN;
case NM_IP_TUNNEL_MODE_UNKNOWN:
break;
}
g_return_val_if_reached (NM_LINK_TYPE_UNKNOWN);
}
/*****************************************************************************/
static gboolean
create_and_realize (NMDevice *device,
NMConnection *connection,
NMDevice *parent,
const NMPlatformLink **out_plink,
GError **error)
{
const char *iface = nm_device_get_iface (device);
NMSettingIPTunnel *s_ip_tunnel;
NMPlatformError plerr;
NMPlatformLnkGre lnk_gre = { };
NMPlatformLnkSit lnk_sit = { };
NMPlatformLnkIpIp lnk_ipip = { };
NMPlatformLnkIp6Tnl lnk_ip6tnl = { };
const char *str;
gint64 val;
s_ip_tunnel = nm_connection_get_setting_ip_tunnel (connection);
g_assert (s_ip_tunnel);
switch (nm_setting_ip_tunnel_get_mode (s_ip_tunnel)) {
case NM_IP_TUNNEL_MODE_GRE:
if (parent)
lnk_gre.parent_ifindex = nm_device_get_ifindex (parent);
str = nm_setting_ip_tunnel_get_local (s_ip_tunnel);
if (str)
inet_pton (AF_INET, str, &lnk_gre.local);
str = nm_setting_ip_tunnel_get_remote (s_ip_tunnel);
g_assert (str);
inet_pton (AF_INET, str, &lnk_gre.remote);
lnk_gre.ttl = nm_setting_ip_tunnel_get_ttl (s_ip_tunnel);
lnk_gre.tos = nm_setting_ip_tunnel_get_tos (s_ip_tunnel);
lnk_gre.path_mtu_discovery = nm_setting_ip_tunnel_get_path_mtu_discovery (s_ip_tunnel);
val = _nm_utils_ascii_str_to_int64 (nm_setting_ip_tunnel_get_input_key (s_ip_tunnel),
10,
0,
G_MAXUINT32,
-1);
if (val != -1) {
lnk_gre.input_key = val;
lnk_gre.input_flags = NM_GRE_KEY;
}
val = _nm_utils_ascii_str_to_int64 (nm_setting_ip_tunnel_get_output_key (s_ip_tunnel),
10,
0,
G_MAXUINT32,
-1);
if (val != -1) {
lnk_gre.output_key = val;
lnk_gre.output_flags = NM_GRE_KEY;
}
plerr = nm_platform_link_gre_add (NM_PLATFORM_GET, iface, &lnk_gre, out_plink);
if (plerr != NM_PLATFORM_ERROR_SUCCESS) {
g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED,
"Failed to create GRE interface '%s' for '%s': %s",
iface,
nm_connection_get_id (connection),
nm_platform_error_to_string (plerr));
return FALSE;
}
break;
case NM_IP_TUNNEL_MODE_SIT:
if (parent)
lnk_sit.parent_ifindex = nm_device_get_ifindex (parent);
str = nm_setting_ip_tunnel_get_local (s_ip_tunnel);
if (str)
inet_pton (AF_INET, str, &lnk_sit.local);
str = nm_setting_ip_tunnel_get_remote (s_ip_tunnel);
g_assert (str);
inet_pton (AF_INET, str, &lnk_sit.remote);
lnk_sit.ttl = nm_setting_ip_tunnel_get_ttl (s_ip_tunnel);
lnk_sit.tos = nm_setting_ip_tunnel_get_tos (s_ip_tunnel);
lnk_sit.path_mtu_discovery = nm_setting_ip_tunnel_get_path_mtu_discovery (s_ip_tunnel);
plerr = nm_platform_link_sit_add (NM_PLATFORM_GET, iface, &lnk_sit, out_plink);
if (plerr != NM_PLATFORM_ERROR_SUCCESS) {
g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED,
"Failed to create SIT interface '%s' for '%s': %s",
iface,
nm_connection_get_id (connection),
nm_platform_error_to_string (plerr));
return FALSE;
}
break;
case NM_IP_TUNNEL_MODE_IPIP:
if (parent)
lnk_ipip.parent_ifindex = nm_device_get_ifindex (parent);
str = nm_setting_ip_tunnel_get_local (s_ip_tunnel);
if (str)
inet_pton (AF_INET, str, &lnk_ipip.local);
str = nm_setting_ip_tunnel_get_remote (s_ip_tunnel);
g_assert (str);
inet_pton (AF_INET, str, &lnk_ipip.remote);
lnk_ipip.ttl = nm_setting_ip_tunnel_get_ttl (s_ip_tunnel);
lnk_ipip.tos = nm_setting_ip_tunnel_get_tos (s_ip_tunnel);
lnk_ipip.path_mtu_discovery = nm_setting_ip_tunnel_get_path_mtu_discovery (s_ip_tunnel);
plerr = nm_platform_link_ipip_add (NM_PLATFORM_GET, iface, &lnk_ipip, out_plink);
if (plerr != NM_PLATFORM_ERROR_SUCCESS) {
g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED,
"Failed to create IPIP interface '%s' for '%s': %s",
iface,
nm_connection_get_id (connection),
nm_platform_error_to_string (plerr));
return FALSE;
}
break;
case NM_IP_TUNNEL_MODE_IPIP6:
case NM_IP_TUNNEL_MODE_IP6IP6:
if (parent)
lnk_ip6tnl.parent_ifindex = nm_device_get_ifindex (parent);
str = nm_setting_ip_tunnel_get_local (s_ip_tunnel);
if (str)
inet_pton (AF_INET6, str, &lnk_ip6tnl.local);
str = nm_setting_ip_tunnel_get_remote (s_ip_tunnel);
g_assert (str);
inet_pton (AF_INET6, str, &lnk_ip6tnl.remote);
lnk_ip6tnl.ttl = nm_setting_ip_tunnel_get_ttl (s_ip_tunnel);
lnk_ip6tnl.tclass = nm_setting_ip_tunnel_get_tos (s_ip_tunnel);
lnk_ip6tnl.encap_limit = nm_setting_ip_tunnel_get_encapsulation_limit (s_ip_tunnel);
lnk_ip6tnl.flow_label = nm_setting_ip_tunnel_get_flow_label (s_ip_tunnel);
lnk_ip6tnl.proto = nm_setting_ip_tunnel_get_mode (s_ip_tunnel) == NM_IP_TUNNEL_MODE_IPIP6 ? IPPROTO_IPIP : IPPROTO_IPV6;
plerr = nm_platform_link_ip6tnl_add (NM_PLATFORM_GET, iface, &lnk_ip6tnl, out_plink);
if (plerr != NM_PLATFORM_ERROR_SUCCESS) {
g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED,
"Failed to create IPIP interface '%s' for '%s': %s",
iface,
nm_connection_get_id (connection),
nm_platform_error_to_string (plerr));
return FALSE;
}
break;
default:
g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED,
"Failed to create IP tunnel interface '%s' for '%s': mode %d not supported",
iface,
nm_connection_get_id (connection),
(int) nm_setting_ip_tunnel_get_mode (s_ip_tunnel));
return FALSE;
}
return TRUE;
}
static guint32
get_configured_mtu (NMDevice *self, gboolean *out_is_user_config)
{
NMSettingIPTunnel *setting;
gint64 mtu_default;
guint32 mtu;
nm_assert (NM_IS_DEVICE (self));
nm_assert (out_is_user_config);
setting = NM_SETTING_IP_TUNNEL (nm_device_get_applied_setting (self, NM_TYPE_SETTING_IP_TUNNEL));
if (!setting)
g_return_val_if_reached (0);
mtu = nm_setting_ip_tunnel_get_mtu (setting);
if (mtu == 0) {
mtu_default = nm_device_get_configured_mtu_from_connection_default (self, "ip-tunnel.mtu");
if (mtu_default >= 0) {
*out_is_user_config = TRUE;
return (guint32) mtu_default;
}
}
*out_is_user_config = (mtu != 0);
return mtu ?: NM_DEVICE_DEFAULT_MTU_WIRED;
}
static NMDeviceCapabilities
get_generic_capabilities (NMDevice *dev)
{
return NM_DEVICE_CAP_IS_SOFTWARE;
}
static void
unrealize_notify (NMDevice *device)
{
NM_DEVICE_CLASS (nm_device_ip_tunnel_parent_class)->unrealize_notify (device);
update_properties_from_ifindex (device, 0);
}
static gboolean
can_reapply_change (NMDevice *device,
const char *setting_name,
NMSetting *s_old,
NMSetting *s_new,
GHashTable *diffs,
GError **error)
{
NMDeviceClass *device_class;
/* Only handle ip-tunnel setting here, delegate other settings to parent class */
if (nm_streq (setting_name, NM_SETTING_IP_TUNNEL_SETTING_NAME)) {
return nm_device_hash_check_invalid_keys (diffs,
NM_SETTING_IP_TUNNEL_SETTING_NAME,
error,
NM_SETTING_IP_TUNNEL_MTU); /* reapplied with IP config */
}
device_class = NM_DEVICE_CLASS (nm_device_ip_tunnel_parent_class);
return device_class->can_reapply_change (device,
setting_name,
s_old,
s_new,
diffs,
error);
}
/*****************************************************************************/
static void
get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec)
{
NMDeviceIPTunnelPrivate *priv = NM_DEVICE_IP_TUNNEL_GET_PRIVATE ((NMDeviceIPTunnel *) object);
switch (prop_id) {
case PROP_MODE:
g_value_set_uint (value, priv->mode);
break;
case PROP_LOCAL:
g_value_set_string (value, priv->local);
break;
case PROP_REMOTE:
g_value_set_string (value, priv->remote);
break;
case PROP_TTL:
g_value_set_uchar (value, priv->ttl);
break;
case PROP_TOS:
g_value_set_uchar (value, priv->tos);
break;
case PROP_PATH_MTU_DISCOVERY:
g_value_set_boolean (value, priv->path_mtu_discovery);
break;
case PROP_INPUT_KEY:
g_value_set_string (value, priv->input_key);
break;
case PROP_OUTPUT_KEY:
g_value_set_string (value, priv->output_key);
break;
case PROP_ENCAPSULATION_LIMIT:
g_value_set_uchar (value, priv->encap_limit);
break;
case PROP_FLOW_LABEL:
g_value_set_uint (value, priv->flow_label);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec)
{
NMDeviceIPTunnelPrivate *priv = NM_DEVICE_IP_TUNNEL_GET_PRIVATE ((NMDeviceIPTunnel *) object);
switch (prop_id) {
case PROP_MODE:
priv->mode = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
/*****************************************************************************/
static void
nm_device_ip_tunnel_init (NMDeviceIPTunnel *self)
{
}
static void
constructed (GObject *object)
{
NMDeviceIPTunnelPrivate *priv = NM_DEVICE_IP_TUNNEL_GET_PRIVATE ((NMDeviceIPTunnel *) object);
if ( priv->mode == NM_IP_TUNNEL_MODE_IPIP6
|| priv->mode == NM_IP_TUNNEL_MODE_IP6IP6)
priv->addr_family = AF_INET6;
else
priv->addr_family = AF_INET;
G_OBJECT_CLASS (nm_device_ip_tunnel_parent_class)->constructed (object);
}
static void
dispose (GObject *object)
{
NMDeviceIPTunnel *self = NM_DEVICE_IP_TUNNEL (object);
NMDeviceIPTunnelPrivate *priv = NM_DEVICE_IP_TUNNEL_GET_PRIVATE (self);
g_clear_pointer (&priv->local, g_free);
g_clear_pointer (&priv->remote, g_free);
g_clear_pointer (&priv->input_key, g_free);
g_clear_pointer (&priv->output_key, g_free);
G_OBJECT_CLASS (nm_device_ip_tunnel_parent_class)->dispose (object);
}
static void
nm_device_ip_tunnel_class_init (NMDeviceIPTunnelClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
NMDeviceClass *device_class = NM_DEVICE_CLASS (klass);
object_class->constructed = constructed;
object_class->dispose = dispose;
object_class->get_property = get_property;
object_class->set_property = set_property;
device_class->link_changed = link_changed;
device_class->can_reapply_change = can_reapply_change;
device_class->complete_connection = complete_connection;
device_class->update_connection = update_connection;
device_class->check_connection_compatible = check_connection_compatible;
device_class->create_and_realize = create_and_realize;
device_class->get_generic_capabilities = get_generic_capabilities;
device_class->get_configured_mtu = get_configured_mtu;
device_class->unrealize_notify = unrealize_notify;
NM_DEVICE_CLASS_DECLARE_TYPES (klass,
NM_SETTING_IP_TUNNEL_SETTING_NAME,
NM_LINK_TYPE_GRE,
NM_LINK_TYPE_IP6TNL,
NM_LINK_TYPE_IPIP,
NM_LINK_TYPE_SIT);
obj_properties[PROP_MODE] =
g_param_spec_uint (NM_DEVICE_IP_TUNNEL_MODE, "", "",
0, G_MAXUINT, 0,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_LOCAL] =
g_param_spec_string (NM_DEVICE_IP_TUNNEL_LOCAL, "", "",
NULL,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_REMOTE] =
g_param_spec_string (NM_DEVICE_IP_TUNNEL_REMOTE, "", "",
NULL,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_TTL] =
g_param_spec_uchar (NM_DEVICE_IP_TUNNEL_TTL, "", "",
0, 255, 0,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_TOS] =
g_param_spec_uchar (NM_DEVICE_IP_TUNNEL_TOS, "", "",
0, 255, 0,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_PATH_MTU_DISCOVERY] =
g_param_spec_boolean (NM_DEVICE_IP_TUNNEL_PATH_MTU_DISCOVERY, "", "",
FALSE,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_INPUT_KEY] =
g_param_spec_string (NM_DEVICE_IP_TUNNEL_INPUT_KEY, "", "",
NULL,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_OUTPUT_KEY] =
g_param_spec_string (NM_DEVICE_IP_TUNNEL_OUTPUT_KEY, "", "",
NULL,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_ENCAPSULATION_LIMIT] =
g_param_spec_uchar (NM_DEVICE_IP_TUNNEL_ENCAPSULATION_LIMIT, "", "",
0, 255, 0,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_FLOW_LABEL] =
g_param_spec_uint (NM_DEVICE_IP_TUNNEL_FLOW_LABEL, "", "",
0, (1 << 20) - 1, 0,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, _PROPERTY_ENUMS_LAST, obj_properties);
nm_exported_object_class_add_interface (NM_EXPORTED_OBJECT_CLASS (klass),
NMDBUS_TYPE_DEVICE_IPTUNNEL_SKELETON,
NULL);
}
/*****************************************************************************/
#define NM_TYPE_IP_TUNNEL_DEVICE_FACTORY (nm_ip_tunnel_device_factory_get_type ())
#define NM_IP_TUNNEL_DEVICE_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_IP_TUNNEL_DEVICE_FACTORY, NMIPTunnelDeviceFactory))
static NMDevice *
create_device (NMDeviceFactory *factory,
const char *iface,
const NMPlatformLink *plink,
NMConnection *connection,
gboolean *out_ignore)
{
NMSettingIPTunnel *s_ip_tunnel;
NMIPTunnelMode mode;
NMLinkType link_type;
if (connection) {
s_ip_tunnel = nm_connection_get_setting_ip_tunnel (connection);
mode = nm_setting_ip_tunnel_get_mode (s_ip_tunnel);
link_type = tunnel_mode_to_link_type (mode);
} else {
link_type = plink->type;
mode = platform_link_to_tunnel_mode (plink);
}
if (mode == NM_IP_TUNNEL_MODE_UNKNOWN || link_type == NM_LINK_TYPE_UNKNOWN)
return NULL;
return (NMDevice *) g_object_new (NM_TYPE_DEVICE_IP_TUNNEL,
NM_DEVICE_IFACE, iface,
NM_DEVICE_TYPE_DESC, "IPTunnel",
NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_IP_TUNNEL,
NM_DEVICE_LINK_TYPE, link_type,
NM_DEVICE_IP_TUNNEL_MODE, mode,
NULL);
}
static const char *
get_connection_parent (NMDeviceFactory *factory, NMConnection *connection)
{
NMSettingIPTunnel *s_ip_tunnel;
g_return_val_if_fail (nm_connection_is_type (connection, NM_SETTING_IP_TUNNEL_SETTING_NAME), NULL);
s_ip_tunnel = nm_connection_get_setting_ip_tunnel (connection);
g_assert (s_ip_tunnel);
return nm_setting_ip_tunnel_get_parent (s_ip_tunnel);
}
static char *
get_connection_iface (NMDeviceFactory *factory,
NMConnection *connection,
const char *parent_iface)
{
const char *ifname;
NMSettingIPTunnel *s_ip_tunnel;
g_return_val_if_fail (nm_connection_is_type (connection, NM_SETTING_IP_TUNNEL_SETTING_NAME), NULL);
s_ip_tunnel = nm_connection_get_setting_ip_tunnel (connection);
g_assert (s_ip_tunnel);
if (nm_setting_ip_tunnel_get_parent (s_ip_tunnel) && !parent_iface)
return NULL;
ifname = nm_connection_get_interface_name (connection);
return g_strdup (ifname);
}
NM_DEVICE_FACTORY_DEFINE_INTERNAL (IP_TUNNEL, IPTunnel, ip_tunnel,
NM_DEVICE_FACTORY_DECLARE_LINK_TYPES (NM_LINK_TYPE_GRE, NM_LINK_TYPE_SIT, NM_LINK_TYPE_IPIP)
NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES (NM_SETTING_IP_TUNNEL_SETTING_NAME),
factory_class->create_device = create_device;
factory_class->get_connection_parent = get_connection_parent;
factory_class->get_connection_iface = get_connection_iface;
);
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