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ndisc: fix ordering of gateways

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Insert the new gateway at the end when it has the least preference.

Fixes the following runtime error:
 src/ndisc/nm-ndisc.c:204:_ASSERT_data_gateways: assertion failed:
 (_preference_to_priority (item_prev->preference) >=
 _preference_to_priority (item->preference))
This commit is contained in:
Beniamino Galvani 2017-11-03 10:28:04 +01:00
parent 4a9ec4d39b
commit db41380c15
2 changed files with 66 additions and 5 deletions
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2
src/ndisc/nm-ndisc.c
View file

@ -280,7 +280,7 @@ nm_ndisc_add_gateway (NMNDisc *ndisc, const NMNDiscGateway *new)
if (new->lifetime) {
g_array_insert_val (rdata->gateways,
insert_idx == G_MAXUINT
? 0u
? rdata->gateways->len
: insert_idx,
*new);
}

69
src/ndisc/tests/test-ndisc-fake.c
View file

@ -298,7 +298,67 @@ test_everything (void)
}
static void
test_preference_changed (NMNDisc *ndisc, const NMNDiscData *rdata, guint changed_int, TestData *data)
test_preference_order_cb (NMNDisc *ndisc, const NMNDiscData *rdata, guint changed_int, TestData *data)
{
NMNDiscConfigMap changed = changed_int;
if (data->counter == 1) {
g_assert_cmpint (changed, ==, NM_NDISC_CONFIG_GATEWAYS |
NM_NDISC_CONFIG_ADDRESSES |
NM_NDISC_CONFIG_ROUTES);
g_assert_cmpint (rdata->gateways_n, ==, 2);
match_gateway (rdata, 0, "fe80::1", data->timestamp1, 10, NM_ICMPV6_ROUTER_PREF_HIGH);
match_gateway (rdata, 1, "fe80::2", data->timestamp1 + 1, 10, NM_ICMPV6_ROUTER_PREF_LOW);
g_assert_cmpint (rdata->addresses_n, ==, 2);
match_address (rdata, 0, "2001:db8:a:a::1", data->timestamp1, 10, 10);
match_address (rdata, 1, "2001:db8:a:b::1", data->timestamp1 + 1, 10, 10);
g_assert_cmpint (rdata->routes_n, ==, 2);
match_route (rdata, 0, "2001:db8:a:b::", 64, "fe80::2", data->timestamp1 + 1, 10, 10);
match_route (rdata, 1, "2001:db8:a:a::", 64, "fe80::1", data->timestamp1, 10, 5);
g_assert (nm_fake_ndisc_done (NM_FAKE_NDISC (ndisc)));
g_main_loop_quit (data->loop);
}
data->counter++;
}
static void
test_preference_order (void)
{
NMFakeNDisc *ndisc = ndisc_new ();
guint32 now = nm_utils_get_monotonic_timestamp_s ();
TestData data = { g_main_loop_new (NULL, FALSE), 0, 0, now };
guint id;
/* Test insertion order of gateways */
id = nm_fake_ndisc_add_ra (ndisc, 1, NM_NDISC_DHCP_LEVEL_NONE, 4, 1500);
g_assert (id);
nm_fake_ndisc_add_gateway (ndisc, id, "fe80::1", now, 10, NM_ICMPV6_ROUTER_PREF_HIGH);
nm_fake_ndisc_add_prefix (ndisc, id, "2001:db8:a:a::", 64, "fe80::1", now, 10, 10, 5);
id = nm_fake_ndisc_add_ra (ndisc, 1, NM_NDISC_DHCP_LEVEL_NONE, 4, 1500);
g_assert (id);
nm_fake_ndisc_add_gateway (ndisc, id, "fe80::2", ++now, 10, NM_ICMPV6_ROUTER_PREF_LOW);
nm_fake_ndisc_add_prefix (ndisc, id, "2001:db8:a:b::", 64, "fe80::2", now, 10, 10, 10);
g_signal_connect (ndisc,
NM_NDISC_CONFIG_RECEIVED,
G_CALLBACK (test_preference_order_cb),
&data);
nm_ndisc_start (NM_NDISC (ndisc));
g_main_loop_run (data.loop);
g_assert_cmpint (data.counter, ==, 2);
g_object_unref (ndisc);
g_main_loop_unref (data.loop);
}
static void
test_preference_changed_cb (NMNDisc *ndisc, const NMNDiscData *rdata, guint changed_int, TestData *data)
{
NMNDiscConfigMap changed = changed_int;
@ -338,7 +398,7 @@ test_preference_changed (NMNDisc *ndisc, const NMNDiscData *rdata, guint changed
}
static void
test_preference (void)
test_preference_changed (void)
{
NMFakeNDisc *ndisc = ndisc_new ();
guint32 now = nm_utils_get_monotonic_timestamp_s ();
@ -367,7 +427,7 @@ test_preference (void)
g_signal_connect (ndisc,
NM_NDISC_CONFIG_RECEIVED,
G_CALLBACK (test_preference_changed),
G_CALLBACK (test_preference_changed_cb),
&data);
nm_ndisc_start (NM_NDISC (ndisc));
@ -476,7 +536,8 @@ main (int argc, char **argv)
g_test_add_func ("/ndisc/simple", test_simple);
g_test_add_func ("/ndisc/everything-changed", test_everything);
g_test_add_func ("/ndisc/preference-changed", test_preference);
g_test_add_func ("/ndisc/preference-order", test_preference_order);
g_test_add_func ("/ndisc/preference-changed", test_preference_changed);
g_test_add_func ("/ndisc/dns-solicit-loop", test_dns_solicit_loop);
return g_test_run ();