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libnm-core: add normalize of MTU for NMSettingInfiniband

Browse source 
Previously, NMSettingInfiniband:verify() silently modifies the
setting for invalid MTU. verify() should not do that.

For libnm-core we can change behavior and implement normalization
of MTU. This changes behavior for NMSettingInfiniband:verify() so
that MTU gets no longer fixed by verify() alone. Instead verify()
fails with a verification error.

Due the possibility to normalize the MTU, NM still can receive
invalid settings and fix it.

For libnm-core we don't change behavior, merely add a code comment.

Signed-off-by: Thomas Haller <thaller@redhat.com>
This commit is contained in:
Thomas Haller 2014-08-13 02:35:26 +02:00
parent 6163263b42
commit 66d88dc00f
4 changed files with 86 additions and 2 deletions
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25
libnm-core/nm-connection.c
View file

@ -710,6 +710,30 @@ _normalize_ip_config (NMConnection *self, GHashTable *parameters)
}
}
static gboolean
_normalize_infiniband_mtu (NMConnection *self, GHashTable *parameters)
{
NMSettingInfiniband *s_infini = nm_connection_get_setting_infiniband (self);
if (s_infini) {
const char *transport_mode = nm_setting_infiniband_get_transport_mode (s_infini);
guint32 max_mtu = 0;
if (transport_mode) {
if (!strcmp (transport_mode, "datagram"))
max_mtu = 2044;
else if (!strcmp (transport_mode, "connected"))
max_mtu = 65520;
if (max_mtu && nm_setting_infiniband_get_mtu (s_infini) > max_mtu) {
g_object_set (s_infini, NM_SETTING_INFINIBAND_MTU, max_mtu, NULL);
return TRUE;
}
}
}
return FALSE;
}
/**
* nm_connection_verify:
* @connection: the #NMConnection to verify
@ -924,6 +948,7 @@ nm_connection_normalize (NMConnection *connection,
was_modified |= _normalize_virtual_iface_name (connection);
was_modified |= _normalize_connection_slave_type (connection);
was_modified |= _normalize_ip_config (connection, parameters);
was_modified |= _normalize_infiniband_mtu (connection, parameters);
/* Verify anew. */
success = _nm_connection_verify (connection, error);

17
libnm-core/nm-setting-infiniband.c
View file

@ -194,6 +194,7 @@ verify (NMSetting *setting, GSList *all_settings, GError **error)
{
NMSettingConnection *s_con;
NMSettingInfinibandPrivate *priv = NM_SETTING_INFINIBAND_GET_PRIVATE (setting);
guint32 normerr_max_mtu = 0;
if (priv->mac_address && priv->mac_address->len != INFINIBAND_ALEN) {
g_set_error_literal (error,
@ -206,10 +207,10 @@ verify (NMSetting *setting, GSList *all_settings, GError **error)
if (!g_strcmp0 (priv->transport_mode, "datagram")) {
if (priv->mtu > 2044)
priv->mtu = 2044;
normerr_max_mtu = 2044;
} else if (!g_strcmp0 (priv->transport_mode, "connected")) {
if (priv->mtu > 65520)
priv->mtu = 65520;
normerr_max_mtu = 65520;
} else {
g_set_error_literal (error,
NM_SETTING_INFINIBAND_ERROR,
@ -287,6 +288,18 @@ verify (NMSetting *setting, GSList *all_settings, GError **error)
}
}
/* *** errors above here should be always fatal, below NORMALIZABLE_ERROR *** */
if (normerr_max_mtu > 0) {
g_set_error (error,
NM_SETTING_INFINIBAND_ERROR,
NM_SETTING_INFINIBAND_ERROR_INVALID_PROPERTY,
_("mtu for transport mode '%s' can be at most %d but it is %d"),
priv->transport_mode, normerr_max_mtu, priv->mtu);
g_prefix_error (error, "%s.%s: ", NM_SETTING_INFINIBAND_SETTING_NAME, NM_SETTING_INFINIBAND_MTU);
return NM_SETTING_VERIFY_NORMALIZABLE_ERROR;
}
return TRUE;
}

45
libnm-core/tests/test-general.c
View file

@ -3059,6 +3059,50 @@ test_connection_normalize_slave_type_2 (void)
g_assert_cmpstr (nm_setting_connection_get_slave_type (s_con), ==, NM_SETTING_BRIDGE_SETTING_NAME);
}
static void
test_connection_normalize_infiniband_mtu (void)
{
gs_unref_object NMConnection *con = NULL;
NMSettingInfiniband *s_infini;
con = nmtst_create_minimal_connection ("test_connection_normalize_infiniband_mtu", NULL,
NM_SETTING_INFINIBAND_SETTING_NAME, NULL);
s_infini = nm_connection_get_setting_infiniband (con);
g_object_set (s_infini,
NM_SETTING_INFINIBAND_TRANSPORT_MODE, "connected",
NULL);
nmtst_assert_connection_verifies_and_normalizable (con);
g_object_set (s_infini,
NM_SETTING_INFINIBAND_TRANSPORT_MODE, "datagram",
NM_SETTING_INFINIBAND_MTU, (guint) 2044,
NULL);
nmtst_assert_connection_verifies_without_normalization (con);
g_assert_cmpint (2044, ==, nm_setting_infiniband_get_mtu (s_infini));
g_object_set (s_infini,
NM_SETTING_INFINIBAND_TRANSPORT_MODE, "datagram",
NM_SETTING_INFINIBAND_MTU, (guint) 2045,
NULL);
nmtst_assert_connection_verifies_after_normalization (con, NM_SETTING_INFINIBAND_ERROR, NM_SETTING_INFINIBAND_ERROR_INVALID_PROPERTY);
g_assert_cmpint (2044, ==, nm_setting_infiniband_get_mtu (s_infini));
g_object_set (s_infini,
NM_SETTING_INFINIBAND_TRANSPORT_MODE, "connected",
NM_SETTING_INFINIBAND_MTU, (guint) 65520,
NULL);
nmtst_assert_connection_verifies_without_normalization (con);
g_assert_cmpint (65520, ==, nm_setting_infiniband_get_mtu (s_infini));
g_object_set (s_infini,
NM_SETTING_INFINIBAND_TRANSPORT_MODE, "connected",
NM_SETTING_INFINIBAND_MTU, (guint) 65521,
NULL);
nmtst_assert_connection_verifies_after_normalization (con, NM_SETTING_INFINIBAND_ERROR, NM_SETTING_INFINIBAND_ERROR_INVALID_PROPERTY);
g_assert_cmpint (65520, ==, nm_setting_infiniband_get_mtu (s_infini));
}
NMTST_DEFINE ();
int main (int argc, char **argv)
@ -3103,6 +3147,7 @@ int main (int argc, char **argv)
g_test_add_func ("/core/general/test_connection_normalize_type", test_connection_normalize_type);
g_test_add_func ("/core/general/test_connection_normalize_slave_type_1", test_connection_normalize_slave_type_1);
g_test_add_func ("/core/general/test_connection_normalize_slave_type_2", test_connection_normalize_slave_type_2);
g_test_add_func ("/core/general/test_connection_normalize_infiniband_mtu", test_connection_normalize_infiniband_mtu);
g_test_add_func ("/core/general/test_setting_connection_permissions_helpers", test_setting_connection_permissions_helpers);
g_test_add_func ("/core/general/test_setting_connection_permissions_property", test_setting_connection_permissions_property);

1
libnm-util/nm-setting-infiniband.c
View file

@ -206,6 +206,7 @@ verify (NMSetting *setting, GSList *all_settings, GError **error)
return FALSE;
}
/* FIXME: verify() should not modify the setting, but return NORMALIZABLE success. */
if (!g_strcmp0 (priv->transport_mode, "datagram")) {
if (priv->mtu > 2044)
priv->mtu = 2044;