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-rw-r--r--src/devices/nm-device.c10
-rw-r--r--src/platform/nm-linux-platform.c8
-rw-r--r--src/platform/nm-platform.c8
-rw-r--r--src/platform/nm-platform.h2
-rw-r--r--src/platform/tests/test-route.c2
-rw-r--r--src/vpn/nm-vpn-connection.c139
6 files changed, 97 insertions, 72 deletions
diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index 8001e74b0..55ad6c323 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -10038,6 +10038,11 @@ nm_device_replace_vpn4_config (NMDevice *self, NMIP4Config *old, NMIP4Config *co
{
NMDevicePrivate *priv = NM_DEVICE_GET_PRIVATE (self);
+ nm_assert (!old || NM_IS_IP4_CONFIG (old));
+ nm_assert (!config || NM_IS_IP4_CONFIG (config));
+ nm_assert (!old || nm_ip4_config_get_ifindex (old) == nm_device_get_ip_ifindex (self));
+ nm_assert (!config || nm_ip4_config_get_ifindex (config) == nm_device_get_ip_ifindex (self));
+
if (!_replace_vpn_config_in_list (&priv->vpn4_configs, (GObject *) old, (GObject *) config))
return;
@@ -10167,6 +10172,11 @@ nm_device_replace_vpn6_config (NMDevice *self, NMIP6Config *old, NMIP6Config *co
{
NMDevicePrivate *priv = NM_DEVICE_GET_PRIVATE (self);
+ nm_assert (!old || NM_IS_IP6_CONFIG (old));
+ nm_assert (!config || NM_IS_IP6_CONFIG (config));
+ nm_assert (!old || nm_ip6_config_get_ifindex (old) == nm_device_get_ip_ifindex (self));
+ nm_assert (!config || nm_ip6_config_get_ifindex (config) == nm_device_get_ip_ifindex (self));
+
if (!_replace_vpn_config_in_list (&priv->vpn6_configs, (GObject *) old, (GObject *) config))
return;
diff --git a/src/platform/nm-linux-platform.c b/src/platform/nm-linux-platform.c
index a018f6b70..5c952a0b2 100644
--- a/src/platform/nm-linux-platform.c
+++ b/src/platform/nm-linux-platform.c
@@ -6033,6 +6033,7 @@ static NMPlatformError
ip_route_get (NMPlatform *platform,
int addr_family,
gconstpointer address,
+ int oif_ifindex,
NMPObject **out_route)
{
const gboolean is_v4 = (addr_family == AF_INET);
@@ -6066,6 +6067,13 @@ ip_route_get (NMPlatform *platform,
if (!_nl_addattr_l (&req.n, sizeof (req), RTA_DST, address, addr_len))
nm_assert_not_reached ();
+ if (oif_ifindex > 0) {
+ gint32 ii = oif_ifindex;
+
+ if (!_nl_addattr_l (&req.n, sizeof (req), RTA_OIF, &ii, sizeof (ii)))
+ nm_assert_not_reached ();
+ }
+
seq_result = WAIT_FOR_NL_RESPONSE_RESULT_UNKNOWN;
nle = _nl_send_nlmsghdr (platform, &req.n, &seq_result, DELAYED_ACTION_RESPONSE_TYPE_ROUTE_GET, &route);
if (nle < 0) {
diff --git a/src/platform/nm-platform.c b/src/platform/nm-platform.c
index 8542c945b..7e91b7547 100644
--- a/src/platform/nm-platform.c
+++ b/src/platform/nm-platform.c
@@ -3888,12 +3888,14 @@ NMPlatformError
nm_platform_ip_route_get (NMPlatform *self,
int addr_family,
gconstpointer address /* in_addr_t or struct in6_addr */,
+ int oif_ifindex,
NMPObject **out_route)
{
nm_auto_nmpobj NMPObject *route = NULL;
NMPlatformError result;
char buf[NM_UTILS_INET_ADDRSTRLEN];
char buf_err[200];
+ char buf_oif[64];
_CHECK_SELF (self, klass, FALSE);
@@ -3901,9 +3903,10 @@ nm_platform_ip_route_get (NMPlatform *self,
g_return_val_if_fail (NM_IN_SET (addr_family, AF_INET,
AF_INET6), NM_PLATFORM_ERROR_BUG);
- _LOGT ("route: get IPv%c route for: %s",
+ _LOGT ("route: get IPv%c route for: %s%s",
addr_family == AF_INET ? '4' : '6',
- inet_ntop (addr_family, address, buf, sizeof (buf)));
+ inet_ntop (addr_family, address, buf, sizeof (buf)),
+ oif_ifindex > 0 ? nm_sprintf_buf (buf_oif, " oif %d", oif_ifindex) : "");
if (!klass->ip_route_get)
result = NM_PLATFORM_ERROR_OPNOTSUPP;
@@ -3911,6 +3914,7 @@ nm_platform_ip_route_get (NMPlatform *self,
result = klass->ip_route_get (self,
addr_family,
address,
+ oif_ifindex,
&route);
}
diff --git a/src/platform/nm-platform.h b/src/platform/nm-platform.h
index e14c71512..b29e6668d 100644
--- a/src/platform/nm-platform.h
+++ b/src/platform/nm-platform.h
@@ -823,6 +823,7 @@ typedef struct {
NMPlatformError (*ip_route_get) (NMPlatform *self,
int addr_family,
gconstpointer address,
+ int oif_ifindex,
NMPObject **out_route);
gboolean (*check_support_kernel_extended_ifa_flags) (NMPlatform *);
@@ -1186,6 +1187,7 @@ gboolean nm_platform_ip_route_flush (NMPlatform *self,
NMPlatformError nm_platform_ip_route_get (NMPlatform *self,
int addr_family,
gconstpointer address,
+ int oif_ifindex,
NMPObject **out_route);
const char *nm_platform_link_to_string (const NMPlatformLink *link, char *buf, gsize len);
diff --git a/src/platform/tests/test-route.c b/src/platform/tests/test-route.c
index f749d7514..2c00fadaa 100644
--- a/src/platform/tests/test-route.c
+++ b/src/platform/tests/test-route.c
@@ -409,6 +409,7 @@ test_ip_route_get (void)
result = nm_platform_ip_route_get (NM_PLATFORM_GET,
AF_INET,
&a,
+ nmtst_get_rand_int () % 2 ? 0 : ifindex,
&route);
g_assert (result == NM_PLATFORM_ERROR_SUCCESS);
@@ -417,6 +418,7 @@ test_ip_route_get (void)
g_assert (route->parent._ref_count == 1);
r = NMP_OBJECT_CAST_IP4_ROUTE (route);
g_assert (r->rt_cloned);
+ g_assert (r->ifindex == ifindex);
g_assert (r->network == a);
g_assert (r->plen == 32);
diff --git a/src/vpn/nm-vpn-connection.c b/src/vpn/nm-vpn-connection.c
index 11eb9a495..bd86007ac 100644
--- a/src/vpn/nm-vpn-connection.c
+++ b/src/vpn/nm-vpn-connection.c
@@ -710,47 +710,51 @@ add_ip4_vpn_gateway_route (NMIP4Config *config,
in_addr_t vpn_gw,
NMPlatform *platform)
{
- NMIP4Config *parent_config;
- guint32 parent_gw;
+ guint32 parent_gw = 0;
+ gboolean has_parent_gw = FALSE;
NMPlatformIP4Route route;
+ int ifindex;
guint32 route_metric;
nm_auto_nmpobj const NMPObject *route_resolved = NULL;
g_return_if_fail (NM_IS_IP4_CONFIG (config));
g_return_if_fail (NM_IS_DEVICE (parent_device));
g_return_if_fail (vpn_gw != 0);
- nm_assert (nm_ip4_config_get_ifindex (config) > 0);
- /* Set up a route to the VPN gateway's public IP address through the default
- * network device if the VPN gateway is on a different subnet.
- */
- parent_config = nm_device_get_ip4_config (parent_device);
- g_return_if_fail (parent_config != NULL);
+ ifindex = nm_ip4_config_get_ifindex (config);
- parent_gw = nm_ip4_config_get_gateway (parent_config);
+ nm_assert (ifindex > 0);
+ nm_assert (ifindex == nm_device_get_ip_ifindex (parent_device));
- /* If the VPN gateway is in the same subnet as one of the parent device's
- * IP addresses, don't add the host route to it, but a route through the
- * parent device.
- */
- if (nm_ip4_config_destination_is_direct (parent_config, vpn_gw, 32))
- parent_gw = 0;
-
- /* actually, let's ask kernel how to reach @vpn_gw. If (and only if)
- * the destination is on @parent_device, then we take that @parent_gw. */
+ /* Ask kernel how to reach @vpn_gw. We can only inject the route in
+ * @parent_device, so whatever we resolve, it can only be on @ifindex. */
if (nm_platform_ip_route_get (platform,
AF_INET,
&vpn_gw,
+ ifindex,
(NMPObject **) &route_resolved) == NM_PLATFORM_ERROR_SUCCESS) {
const NMPlatformIP4Route *r = NMP_OBJECT_CAST_IP4_ROUTE (route_resolved);
- if (r->ifindex == nm_ip4_config_get_ifindex (config))
- parent_gw = r->gateway;
+ if (r->ifindex == ifindex) {
+ /* `ip route get` always resolves the route, even if the destination is unreachable.
+ * In which case, it pretends the destination is directly reachable.
+ *
+ * So, only accept direct routes, if @vpn_gw is a private network. */
+ if ( r->gateway
+ || nm_utils_ip_is_site_local (AF_INET, &vpn_gw)) {
+ parent_gw = r->gateway;
+ has_parent_gw = TRUE;
+ }
+ }
}
+ if (!has_parent_gw)
+ return;
+
route_metric = nm_device_get_ip4_route_metric (parent_device);
memset (&route, 0, sizeof (route));
+ route.ifindex = ifindex;
route.network = vpn_gw;
route.plen = 32;
route.gateway = parent_gw;
@@ -779,51 +783,55 @@ add_ip6_vpn_gateway_route (NMIP6Config *config,
const struct in6_addr *vpn_gw,
NMPlatform *platform)
{
- NMIP6Config *parent_config;
- const struct in6_addr *parent_gw;
+ const struct in6_addr *parent_gw = NULL;
+ gboolean has_parent_gw = FALSE;
NMPlatformIP6Route route;
+ int ifindex;
guint32 route_metric;
nm_auto_nmpobj const NMPObject *route_resolved = NULL;
g_return_if_fail (NM_IS_IP6_CONFIG (config));
g_return_if_fail (NM_IS_DEVICE (parent_device));
g_return_if_fail (vpn_gw != NULL);
- nm_assert (nm_ip6_config_get_ifindex (config) > 0);
-
- parent_config = nm_device_get_ip6_config (parent_device);
- g_return_if_fail (parent_config != NULL);
- /* we add a direct route to the VPN gateway, but we only do that
- * on the @parent_device. That is probably not correct in every case... */
- parent_gw = nm_ip6_config_get_gateway (parent_config);
- if (!parent_gw)
- return;
+ ifindex = nm_ip6_config_get_ifindex (config);
- /* If the VPN gateway is in the same subnet as one of the parent device's
- * IP addresses, don't add the host route to it, but a route through the
- * parent device.
- */
- if (nm_ip6_config_destination_is_direct (parent_config, vpn_gw, 128))
- parent_gw = &in6addr_any;
+ nm_assert (ifindex > 0);
+ nm_assert (ifindex == nm_device_get_ip_ifindex (parent_device));
- /* actually, let's ask kernel how to reach @vpn_gw. If (and only if)
- * the destination is on @parent_device, then we take that @parent_gw. */
+ /* Ask kernel how to reach @vpn_gw. We can only inject the route in
+ * @parent_device, so whatever we resolve, it can only be on @ifindex. */
if (nm_platform_ip_route_get (platform,
AF_INET6,
vpn_gw,
+ ifindex,
(NMPObject **) &route_resolved) == NM_PLATFORM_ERROR_SUCCESS) {
const NMPlatformIP6Route *r = NMP_OBJECT_CAST_IP6_ROUTE (route_resolved);
- if (r->ifindex == nm_ip6_config_get_ifindex (config))
- parent_gw = &r->gateway;
+ if (r->ifindex == ifindex) {
+ /* `ip route get` always resolves the route, even if the destination is unreachable.
+ * In which case, it pretends the destination is directly reachable.
+ *
+ * So, only accept direct routes, if @vpn_gw is a private network. */
+ if ( !IN6_IS_ADDR_UNSPECIFIED (&r->gateway)
+ || nm_utils_ip_is_site_local (AF_INET6, &vpn_gw)) {
+ parent_gw = &r->gateway;
+ has_parent_gw = TRUE;
+ }
+ }
}
+ if (!has_parent_gw)
+ return;
+
route_metric = nm_device_get_ip6_route_metric (parent_device);
memset (&route, 0, sizeof (route));
+ route.ifindex = ifindex;
route.network = *vpn_gw;
route.plen = 128;
- route.gateway = *parent_gw;
+ if (parent_gw)
+ route.gateway = *parent_gw;
route.rt_source = NM_IP_CONFIG_SOURCE_VPN;
route.metric = route_metric;
nm_ip6_config_add_route (config, &route);
@@ -833,7 +841,7 @@ add_ip6_vpn_gateway_route (NMIP6Config *config,
* routes include a subnet that matches the parent device's subnet,
* the parent device's gateway would get routed through the VPN and fail.
*/
- if (!IN6_IS_ADDR_UNSPECIFIED (parent_gw)) {
+ if (parent_gw && !IN6_IS_ADDR_UNSPECIFIED (parent_gw)) {
memset (&route, 0, sizeof (route));
route.network = *parent_gw;
route.plen = 128;
@@ -1075,40 +1083,31 @@ apply_parent_device_config (NMVpnConnection *self)
{
NMVpnConnectionPrivate *priv = NM_VPN_CONNECTION_GET_PRIVATE (self);
NMDevice *parent_dev = nm_active_connection_get_device (NM_ACTIVE_CONNECTION (self));
+ int ifindex;
NMIP4Config *vpn4_parent_config = NULL;
NMIP6Config *vpn6_parent_config = NULL;
- if (priv->ip_ifindex > 0) {
- if (priv->ip4_config) {
- vpn4_parent_config = nm_ip4_config_new (nm_netns_get_multi_idx (priv->netns),
- priv->ip_ifindex);
- }
- if (priv->ip6_config) {
- vpn6_parent_config = nm_ip6_config_new (nm_netns_get_multi_idx (priv->netns),
- priv->ip_ifindex);
- }
- } else {
- int ifindex;
-
+ ifindex = nm_device_get_ip_ifindex (parent_dev);
+ if (ifindex > 0) {
/* If the VPN didn't return a network interface, it is a route-based
* VPN (like kernel IPSec) and all IP addressing and routing should
* be done on the parent interface instead.
*/
-
- /* Also clear the gateway. We don't configure the gateway as part of the
- * vpn-config. Instead we tell NMDefaultRouteManager directly about the
- * default route. */
- ifindex = nm_device_get_ip_ifindex (parent_dev);
- if (ifindex > 0) {
- if (priv->ip4_config) {
- vpn4_parent_config = nm_ip4_config_new (nm_netns_get_multi_idx (priv->netns),
- ifindex);
+ if (priv->ip4_config) {
+ vpn4_parent_config = nm_ip4_config_new (nm_netns_get_multi_idx (priv->netns),
+ ifindex);
+ if (priv->ip_ifindex <= 0)
nm_ip4_config_merge (vpn4_parent_config, priv->ip4_config, NM_IP_CONFIG_MERGE_NO_DNS);
- }
- if (priv->ip6_config) {
- vpn6_parent_config = nm_ip6_config_new (nm_netns_get_multi_idx (priv->netns),
- ifindex);
+ }
+ if (priv->ip6_config) {
+ vpn6_parent_config = nm_ip6_config_new (nm_netns_get_multi_idx (priv->netns),
+ ifindex);
+ if (priv->ip_ifindex <= 0) {
nm_ip6_config_merge (vpn6_parent_config, priv->ip6_config, NM_IP_CONFIG_MERGE_NO_DNS);
+
+ /* Also clear the gateway. We don't configure the gateway as part of the
+ * vpn-config. Instead we tell NMDefaultRouteManager directly about the
+ * default route. */
nm_ip6_config_set_gateway (vpn6_parent_config, NULL);
}
}
@@ -1144,6 +1143,8 @@ nm_vpn_connection_apply_config (NMVpnConnection *self)
{
NMVpnConnectionPrivate *priv = NM_VPN_CONNECTION_GET_PRIVATE (self);
+ apply_parent_device_config (self);
+
if (priv->ip_ifindex > 0) {
nm_platform_link_set_up (nm_netns_get_platform (priv->netns), priv->ip_ifindex, NULL);
@@ -1166,8 +1167,6 @@ nm_vpn_connection_apply_config (NMVpnConnection *self)
nm_platform_link_set_mtu (nm_netns_get_platform (priv->netns), priv->ip_ifindex, priv->mtu);
}
- apply_parent_device_config (self);
-
nm_default_route_manager_ip4_update_default_route (nm_netns_get_default_route_manager (priv->netns), self);
nm_default_route_manager_ip6_update_default_route (nm_netns_get_default_route_manager (priv->netns), self);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 22:11:03 +0000