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-rw-r--r--src/core/tests/test-l3cfg.c795
1 files changed, 795 insertions, 0 deletions
diff --git a/src/core/tests/test-l3cfg.c b/src/core/tests/test-l3cfg.c
new file mode 100644
index 00000000..43132c6d
--- /dev/null
+++ b/src/core/tests/test-l3cfg.c
@@ -0,0 +1,795 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "src/core/nm-default-daemon.h"
+
+#include "nm-l3cfg.h"
+#include "nm-l3-ipv4ll.h"
+#include "nm-netns.h"
+#include "platform/nm-platform.h"
+
+#include "platform/tests/test-common.h"
+
+/*****************************************************************************/
+
+static NML3Cfg *
+_netns_access_l3cfg(NMNetns *netns, int ifindex)
+{
+    NML3Cfg *l3cfg;
+
+    g_assert(NM_IS_NETNS(netns));
+    g_assert(ifindex > 0);
+
+    g_assert(!nm_netns_get_l3cfg(netns, ifindex));
+
+    l3cfg = nm_netns_access_l3cfg(netns, ifindex);
+    g_assert(NM_IS_L3CFG(l3cfg));
+    return l3cfg;
+}
+
+/*****************************************************************************/
+
+typedef struct {
+    int                test_idx;
+    NMPlatform *       platform;
+    NMNetns *          netns;
+    NMDedupMultiIndex *multiidx;
+    const char *       ifname0;
+    const char *       ifname1;
+    NMPLinkAddress     hwaddr0;
+    NMPLinkAddress     hwaddr1;
+    int                ifindex0;
+    int                ifindex1;
+} TestFixture1;
+
+static const TestFixture1 *
+_test_fixture_1_setup(TestFixture1 *f, int test_idx)
+{
+    const NMPlatformLink *l0;
+    const NMPlatformLink *l1;
+    const NMEtherAddr     addr0 = NM_ETHER_ADDR_INIT(0xAA, 0xAA, test_idx, 0x00, 0x00, 0x00);
+    const NMEtherAddr     addr1 = NM_ETHER_ADDR_INIT(0xAA, 0xAA, test_idx, 0x00, 0x00, 0x11);
+
+    g_assert_cmpint(test_idx, >, 0);
+    g_assert_cmpint(f->test_idx, ==, 0);
+
+    f->test_idx = test_idx;
+
+    f->ifname0 = "nm-test-veth0";
+    f->ifname1 = "nm-test-veth1";
+
+    f->platform = g_object_ref(NM_PLATFORM_GET);
+    f->multiidx = nm_dedup_multi_index_ref(nm_platform_get_multi_idx(f->platform));
+    f->netns    = nm_netns_new(f->platform);
+
+    nmtstp_link_veth_add(f->platform, -1, f->ifname0, f->ifname1);
+
+    l0 = nmtstp_link_get_typed(f->platform, -1, f->ifname0, NM_LINK_TYPE_VETH);
+    l1 = nmtstp_link_get_typed(f->platform, -1, f->ifname1, NM_LINK_TYPE_VETH);
+
+    f->ifindex0 = l0->ifindex;
+    f->ifindex1 = l1->ifindex;
+
+    g_assert_cmpint(nm_platform_link_set_address(f->platform, f->ifindex0, &addr0, sizeof(addr0)),
+                    ==,
+                    0);
+    g_assert_cmpint(nm_platform_link_set_address(f->platform, f->ifindex1, &addr1, sizeof(addr1)),
+                    ==,
+                    0);
+
+    l0 = nmtstp_link_get_typed(f->platform, f->ifindex0, f->ifname0, NM_LINK_TYPE_VETH);
+    l1 = nmtstp_link_get_typed(f->platform, f->ifindex1, f->ifname1, NM_LINK_TYPE_VETH);
+
+    f->hwaddr0 = l0->l_address;
+    f->hwaddr1 = l1->l_address;
+
+    g_assert(nm_platform_link_set_up(f->platform, f->ifindex0, NULL));
+    g_assert(nm_platform_link_set_up(f->platform, f->ifindex1, NULL));
+
+    return f;
+}
+
+static void
+_test_fixture_1_teardown(TestFixture1 *f)
+{
+    g_assert(f);
+
+    if (f->test_idx == 0)
+        return;
+
+    _LOGD("test teatdown");
+
+    nmtstp_link_delete(f->platform, -1, f->ifindex0, f->ifname0, TRUE);
+    g_assert(!nm_platform_link_get(f->platform, f->ifindex0));
+    g_assert(!nm_platform_link_get(f->platform, f->ifindex1));
+    g_assert(!nm_platform_link_get_by_ifname(f->platform, f->ifname0));
+    g_assert(!nm_platform_link_get_by_ifname(f->platform, f->ifname1));
+
+    g_object_unref(f->netns);
+    g_object_unref(f->platform);
+    nm_dedup_multi_index_unref(f->multiidx);
+
+    *f = (TestFixture1){
+        .test_idx = 0,
+    };
+}
+
+/*****************************************************************************/
+
+typedef enum {
+    TEST_L3CFG_NOTIFY_TYPE_NONE,
+    TEST_L3CFG_NOTIFY_TYPE_IDLE_ASSERT_NO_SIGNAL,
+    TEST_L3CFG_NOTIFY_TYPE_COMMIT_1,
+    TEST_L3CFG_NOTIFY_TYPE_WAIT_FOR_ACD_READY_1,
+} TestL3cfgNotifyType;
+
+typedef struct {
+    const TestFixture1 *f;
+
+    bool has_addr4_101 : 1;
+    bool add_addr4_101 : 1;
+
+    guint32           acd_timeout_msec_a;
+    NML3AcdDefendType acd_defend_type_a;
+
+    TestL3cfgNotifyType notify_type;
+    guint               post_commit_event_count;
+    guint               general_event_count;
+    guint               general_event_flags;
+    union {
+        struct {
+            int  cb_count;
+            bool expected_probe_result : 1;
+            bool acd_event_ready_45 : 1;
+            bool acd_event_ready_101 : 1;
+        } wait_for_acd_ready_1;
+    } notify_result;
+} TestL3cfgData;
+
+static void
+_test_l3cfg_data_set_notify_type(TestL3cfgData *tdata, TestL3cfgNotifyType notify_type)
+{
+    g_assert(tdata);
+
+    tdata->notify_type             = notify_type;
+    tdata->post_commit_event_count = 0;
+    tdata->general_event_count     = 0;
+    tdata->general_event_flags     = 0;
+    memset(&tdata->notify_result, 0, sizeof(tdata->notify_result));
+}
+
+static void
+_test_l3cfg_signal_notify(NML3Cfg *                   l3cfg,
+                          const NML3ConfigNotifyData *notify_data,
+                          TestL3cfgData *             tdata)
+{
+    guint i;
+
+    g_assert(NM_IS_L3CFG(l3cfg));
+    g_assert(tdata);
+    g_assert(notify_data);
+    g_assert(_NM_INT_NOT_NEGATIVE(notify_data->notify_type));
+    g_assert(notify_data->notify_type < _NM_L3_CONFIG_NOTIFY_TYPE_NUM);
+
+    if (notify_data->notify_type == NM_L3_CONFIG_NOTIFY_TYPE_PLATFORM_CHANGE_ON_IDLE)
+        g_assert(notify_data->platform_change_on_idle.obj_type_flags != 0u);
+    else if (notify_data->notify_type == NM_L3_CONFIG_NOTIFY_TYPE_PLATFORM_CHANGE) {
+        g_assert(NMP_OBJECT_IS_VALID(notify_data->platform_change.obj));
+        g_assert(notify_data->platform_change.change_type != 0);
+    } else if (notify_data->notify_type == NM_L3_CONFIG_NOTIFY_TYPE_ACD_EVENT) {
+        g_assert_cmpint(notify_data->acd_event.info.n_track_infos, >=, 1);
+        g_assert(notify_data->acd_event.info.track_infos);
+        for (i = 0; i < notify_data->acd_event.info.n_track_infos; i++) {
+            const NML3AcdAddrTrackInfo *ti = &notify_data->acd_event.info.track_infos[i];
+
+            nm_assert(NMP_OBJECT_GET_TYPE(ti->obj) == NMP_OBJECT_TYPE_IP4_ADDRESS);
+            nm_assert(NMP_OBJECT_CAST_IP4_ADDRESS(ti->obj)->address
+                      == notify_data->acd_event.info.addr);
+            nm_assert(NM_IS_L3_CONFIG_DATA(ti->l3cd));
+            nm_assert(ti->tag);
+        }
+    }
+
+    switch (tdata->notify_type) {
+    case TEST_L3CFG_NOTIFY_TYPE_NONE:
+        g_assert_not_reached();
+        break;
+    case TEST_L3CFG_NOTIFY_TYPE_IDLE_ASSERT_NO_SIGNAL:
+        if (NM_IN_SET(notify_data->notify_type,
+                      NM_L3_CONFIG_NOTIFY_TYPE_PLATFORM_CHANGE,
+                      NM_L3_CONFIG_NOTIFY_TYPE_PLATFORM_CHANGE_ON_IDLE))
+            return;
+        g_assert_not_reached();
+        return;
+    case TEST_L3CFG_NOTIFY_TYPE_COMMIT_1:
+        g_assert_cmpint(tdata->post_commit_event_count, ==, 0);
+        switch (notify_data->notify_type) {
+        case NM_L3_CONFIG_NOTIFY_TYPE_POST_COMMIT:
+            tdata->post_commit_event_count++;
+            return;
+        case NM_L3_CONFIG_NOTIFY_TYPE_ACD_EVENT:
+            switch (tdata->f->test_idx) {
+            case 2:
+            case 3:
+                nmtst_assert_ip4_address(notify_data->acd_event.info.addr, "192.168.133.45");
+                if (tdata->f->test_idx == 2)
+                    g_assert(notify_data->acd_event.info.state == NM_L3_ACD_ADDR_STATE_DEFENDING);
+                else
+                    g_assert(notify_data->acd_event.info.state == NM_L3_ACD_ADDR_STATE_PROBING);
+                g_assert(tdata->general_event_count == 0);
+                tdata->general_event_count++;
+                return;
+            case 4:
+                if (notify_data->acd_event.info.addr == nmtst_inet4_from_string("192.168.133.45")) {
+                    g_assert(!NM_FLAGS_HAS(tdata->general_event_flags, 0x1u));
+                    tdata->general_event_flags |= 0x1u;
+                    g_assert(notify_data->acd_event.info.state == NM_L3_ACD_ADDR_STATE_PROBING);
+                    tdata->general_event_count++;
+                } else if (notify_data->acd_event.info.addr
+                           == nmtst_inet4_from_string("192.168.133.101")) {
+                    g_assert(!NM_FLAGS_HAS(tdata->general_event_flags, 0x4u));
+                    tdata->general_event_flags |= 0x4u;
+                    g_assert(notify_data->acd_event.info.state == NM_L3_ACD_ADDR_STATE_PROBING);
+                    tdata->general_event_count++;
+                } else
+                    g_assert_not_reached();
+                return;
+            default:
+                g_assert_not_reached();
+                return;
+            }
+        case NM_L3_CONFIG_NOTIFY_TYPE_PLATFORM_CHANGE:
+            return;
+        default:
+            g_assert_not_reached();
+            return;
+        }
+    case TEST_L3CFG_NOTIFY_TYPE_WAIT_FOR_ACD_READY_1:
+    {
+        int num_acd_completed_events =
+            1 + 2 + (tdata->add_addr4_101 ? (tdata->has_addr4_101 ? 1 : 3) : 0);
+
+        if (NM_IN_SET(notify_data->notify_type,
+                      NM_L3_CONFIG_NOTIFY_TYPE_PLATFORM_CHANGE,
+                      NM_L3_CONFIG_NOTIFY_TYPE_PLATFORM_CHANGE_ON_IDLE))
+            return;
+        if (notify_data->notify_type == NM_L3_CONFIG_NOTIFY_TYPE_ACD_EVENT) {
+            if (notify_data->acd_event.info.addr == nmtst_inet4_from_string("192.168.133.45")) {
+                g_assert(NM_IN_SET(notify_data->acd_event.info.state,
+                                   NM_L3_ACD_ADDR_STATE_READY,
+                                   NM_L3_ACD_ADDR_STATE_DEFENDING));
+                tdata->notify_result.wait_for_acd_ready_1.acd_event_ready_45 = TRUE;
+            } else if (notify_data->acd_event.info.addr
+                       == nmtst_inet4_from_string("192.168.133.101")) {
+                if (tdata->has_addr4_101) {
+                    g_assert(
+                        NM_IN_SET(notify_data->acd_event.info.state, NM_L3_ACD_ADDR_STATE_USED));
+                } else {
+                    g_assert(NM_IN_SET(notify_data->acd_event.info.state,
+                                       NM_L3_ACD_ADDR_STATE_READY,
+                                       NM_L3_ACD_ADDR_STATE_DEFENDING));
+                    tdata->notify_result.wait_for_acd_ready_1.acd_event_ready_101 = TRUE;
+                }
+            } else
+                g_assert_not_reached();
+
+            g_assert_cmpint(tdata->notify_result.wait_for_acd_ready_1.cb_count,
+                            <,
+                            num_acd_completed_events);
+            tdata->notify_result.wait_for_acd_ready_1.cb_count++;
+            return;
+        }
+        if (notify_data->notify_type == NM_L3_CONFIG_NOTIFY_TYPE_POST_COMMIT) {
+            g_assert_cmpint(tdata->notify_result.wait_for_acd_ready_1.cb_count, >, 0);
+            g_assert_cmpint(tdata->notify_result.wait_for_acd_ready_1.cb_count,
+                            <,
+                            num_acd_completed_events);
+            tdata->notify_result.wait_for_acd_ready_1.cb_count++;
+            nmtstp_platform_ip_addresses_assert(
+                tdata->f->platform,
+                tdata->f->ifindex0,
+                TRUE,
+                TRUE,
+                TRUE,
+                tdata->notify_result.wait_for_acd_ready_1.acd_event_ready_45 ? "192.168.133.45"
+                                                                             : NULL,
+                tdata->notify_result.wait_for_acd_ready_1.acd_event_ready_101 ? "192.168.133.101"
+                                                                              : NULL,
+                "1:2:3:4::45");
+            return;
+        }
+        g_assert_not_reached();
+        return;
+    }
+    }
+
+    g_assert_not_reached();
+}
+
+static void
+test_l3cfg(gconstpointer test_data)
+{
+    const int                                      TEST_IDX = GPOINTER_TO_INT(test_data);
+    const guint32                                  ACD_TIMEOUT_BASE_MSEC = 1000;
+    nm_auto(_test_fixture_1_teardown) TestFixture1 test_fixture          = {};
+    const TestFixture1 *                           f;
+    NML3CfgCommitTypeHandle *                      commit_type_1;
+    NML3CfgCommitTypeHandle *                      commit_type_2;
+    gs_unref_object NML3Cfg *l3cfg0                      = NULL;
+    nm_auto_unref_l3cd const NML3ConfigData *l3cd_a      = NULL;
+    TestL3cfgData                            tdata_stack = {
+        .f = NULL,
+    };
+    TestL3cfgData *const tdata = &tdata_stack;
+
+    _LOGD("test start (/l3cfg/%d)", TEST_IDX);
+
+    if (nmtst_test_quick()) {
+        gs_free char *msg =
+            g_strdup_printf("Skipping test: don't run long running test %s (NMTST_DEBUG=slow)\n",
+                            g_get_prgname() ?: "test-l3cfg");
+
+        g_test_skip(msg);
+        return;
+    }
+
+    f = _test_fixture_1_setup(&test_fixture, TEST_IDX);
+
+    tdata->f             = f;
+    tdata->has_addr4_101 = (f->test_idx == 4 && nmtst_get_rand_bool());
+    tdata->add_addr4_101 = (f->test_idx == 4 && nmtst_get_rand_bool());
+
+    tdata->acd_timeout_msec_a = NM_IN_SET(f->test_idx, 3, 4) ? ACD_TIMEOUT_BASE_MSEC : 0u;
+    tdata->acd_defend_type_a  = NM_IN_SET(f->test_idx, 4)
+                                    ? nmtst_rand_select(NM_L3_ACD_DEFEND_TYPE_NEVER,
+                                                       NM_L3_ACD_DEFEND_TYPE_ONCE,
+                                                       NM_L3_ACD_DEFEND_TYPE_ALWAYS)
+                                    : NM_L3_ACD_DEFEND_TYPE_NEVER;
+
+    if (tdata->has_addr4_101) {
+        nmtstp_ip4_address_add(f->platform,
+                               -1,
+                               f->ifindex1,
+                               nmtst_inet4_from_string("192.168.133.101"),
+                               24,
+                               nmtst_inet4_from_string("192.168.133.101"),
+                               100000,
+                               0,
+                               0,
+                               NULL);
+    }
+
+    l3cfg0 = _netns_access_l3cfg(f->netns, f->ifindex0);
+
+    g_signal_connect(l3cfg0, NM_L3CFG_SIGNAL_NOTIFY, G_CALLBACK(_test_l3cfg_signal_notify), tdata);
+
+    commit_type_1 = nm_l3cfg_commit_type_register(l3cfg0, NM_L3_CFG_COMMIT_TYPE_UPDATE, NULL);
+
+    if (!nmtst_get_rand_one_case_in(4)) {
+        commit_type_2 =
+            nm_l3cfg_commit_type_register(l3cfg0,
+                                          nmtst_rand_select(NM_L3_CFG_COMMIT_TYPE_NONE,
+                                                            NM_L3_CFG_COMMIT_TYPE_ASSUME,
+                                                            NM_L3_CFG_COMMIT_TYPE_UPDATE),
+                                          NULL);
+    } else
+        commit_type_2 = NULL;
+
+    switch (f->test_idx) {
+    case 1:
+        break;
+    case 2:
+    case 3:
+    case 4:
+    {
+        nm_auto_unref_l3cd_init NML3ConfigData *l3cd = NULL;
+
+        l3cd = nm_l3_config_data_new(f->multiidx, f->ifindex0);
+
+        nm_l3_config_data_add_address_4(
+            l3cd,
+            NM_PLATFORM_IP4_ADDRESS_INIT(.address      = nmtst_inet4_from_string("192.168.133.45"),
+                                         .peer_address = nmtst_inet4_from_string("192.168.133.45"),
+                                         .plen         = 24, ));
+
+        if (tdata->add_addr4_101) {
+            nm_l3_config_data_add_address_4(
+                l3cd,
+                NM_PLATFORM_IP4_ADDRESS_INIT(.address = nmtst_inet4_from_string("192.168.133.101"),
+                                             .peer_address =
+                                                 nmtst_inet4_from_string("192.168.133.101"),
+                                             .plen = 24, ));
+        }
+
+        nm_l3_config_data_add_address_6(
+            l3cd,
+            NM_PLATFORM_IP6_ADDRESS_INIT(.address = *nmtst_inet6_from_string("1:2:3:4::45"),
+                                         .plen    = 64, ));
+
+        if (nmtst_get_rand_one_case_in(2))
+            nm_l3_config_data_seal(l3cd);
+        l3cd_a = g_steal_pointer(&l3cd);
+        break;
+    }
+    }
+
+    nm_l3_config_data_log(l3cd_a, "l3cd_a", "platform-test: l3cd_a: ", LOGL_DEBUG, LOGD_PLATFORM);
+
+    if (l3cd_a) {
+        nm_l3cfg_add_config(l3cfg0,
+                            GINT_TO_POINTER('a'),
+                            nmtst_get_rand_bool(),
+                            l3cd_a,
+                            'a',
+                            0,
+                            0,
+                            NM_PLATFORM_ROUTE_METRIC_DEFAULT_IP4,
+                            NM_PLATFORM_ROUTE_METRIC_DEFAULT_IP6,
+                            0,
+                            0,
+                            tdata->acd_defend_type_a,
+                            tdata->acd_timeout_msec_a,
+                            NM_L3_CONFIG_MERGE_FLAGS_NONE);
+    }
+
+    nm_l3_config_data_log(nm_l3cfg_get_combined_l3cd(l3cfg0, FALSE),
+                          "test",
+                          "platform-test: l3cfg0: ",
+                          LOGL_DEBUG,
+                          LOGD_PLATFORM);
+
+    _test_l3cfg_data_set_notify_type(tdata, TEST_L3CFG_NOTIFY_TYPE_COMMIT_1);
+    nm_l3cfg_commit(l3cfg0, NM_L3_CFG_COMMIT_TYPE_REAPPLY);
+    g_assert_cmpint(tdata->post_commit_event_count, ==, 1);
+    _test_l3cfg_data_set_notify_type(tdata, TEST_L3CFG_NOTIFY_TYPE_NONE);
+
+    nmtstp_platform_ip_addresses_assert(tdata->f->platform,
+                                        tdata->f->ifindex0,
+                                        TRUE,
+                                        TRUE,
+                                        TRUE,
+                                        NM_IN_SET(f->test_idx, 2) ? "192.168.133.45" : NULL,
+                                        NM_IN_SET(f->test_idx, 2, 3, 4) ? "1:2:3:4::45" : NULL);
+
+    if (NM_IN_SET(f->test_idx, 1, 2)) {
+        _test_l3cfg_data_set_notify_type(tdata, TEST_L3CFG_NOTIFY_TYPE_IDLE_ASSERT_NO_SIGNAL);
+        _LOGT("poll 1 start");
+        nmtst_main_context_iterate_until(NULL,
+                                         nmtst_get_rand_uint32() % (ACD_TIMEOUT_BASE_MSEC * 5u),
+                                         FALSE);
+        _LOGT("poll 1 end");
+        _test_l3cfg_data_set_notify_type(tdata, TEST_L3CFG_NOTIFY_TYPE_NONE);
+    }
+
+    if (NM_IN_SET(f->test_idx, 3, 4)) {
+        _test_l3cfg_data_set_notify_type(tdata, TEST_L3CFG_NOTIFY_TYPE_WAIT_FOR_ACD_READY_1);
+        tdata->notify_result.wait_for_acd_ready_1.expected_probe_result = TRUE;
+        _LOGT("poll 2 start");
+        nmtst_main_context_iterate_until(
+            NULL,
+            ACD_TIMEOUT_BASE_MSEC * 3u / 2u
+                + (nmtst_get_rand_uint32() % (2u * ACD_TIMEOUT_BASE_MSEC)),
+            FALSE);
+        _LOGT("poll 2 end");
+        g_assert_cmpint(tdata->notify_result.wait_for_acd_ready_1.cb_count,
+                        ==,
+                        1 + 2 + (tdata->add_addr4_101 ? (tdata->has_addr4_101 ? 1 : 3) : 0));
+        _test_l3cfg_data_set_notify_type(tdata, TEST_L3CFG_NOTIFY_TYPE_NONE);
+    }
+
+    g_signal_handlers_disconnect_by_func(l3cfg0, G_CALLBACK(_test_l3cfg_signal_notify), tdata);
+
+    nm_l3cfg_commit_type_unregister(l3cfg0, commit_type_1);
+    nm_l3cfg_commit_type_unregister(l3cfg0, commit_type_2);
+
+    if (nmtst_get_rand_one_case_in(3))
+        _test_fixture_1_teardown(&test_fixture);
+
+    nm_l3cfg_remove_config_all(l3cfg0, GINT_TO_POINTER('a'), FALSE);
+
+    if (nmtst_get_rand_one_case_in(3))
+        _test_fixture_1_teardown(&test_fixture);
+
+    _LOGD("test end (/l3cfg/%d)", TEST_IDX);
+}
+
+/*****************************************************************************/
+
+#define L3IPV4LL_ACD_TIMEOUT_MSEC 1500u
+
+typedef struct {
+    const TestFixture1 *     f;
+    NML3CfgCommitTypeHandle *l3cfg_commit_type_1;
+    guint                    acd_timeout_msec;
+    NML3IPv4LL *             l3ipv4ll;
+    bool                     has_addr4_101;
+    gint8                    ready_seen;
+    gint8                    addr_commit;
+    in_addr_t                addr_commit_addr;
+    bool                     add_conflict_checked : 1;
+    bool                     add_conflict_done;
+} TestL3IPv4LLData;
+
+static gconstpointer
+TEST_L3_IPV4LL_TAG(const TestL3IPv4LLData *tdata, guint offset)
+{
+    return (&(((const char *) tdata)[offset]));
+}
+
+static void
+_test_l3_ipv4ll_maybe_add_addr_4(const TestL3IPv4LLData *tdata,
+                                 int                     ifindex,
+                                 guint                   one_case_in_num,
+                                 bool *                  has_addr,
+                                 const char *            addr)
+{
+    if (has_addr) {
+        if (*has_addr || !nmtst_get_rand_one_case_in(one_case_in_num))
+            return;
+        *has_addr = TRUE;
+    }
+
+    if (ifindex == 0)
+        ifindex = tdata->f->ifindex0;
+
+    g_assert_cmpint(ifindex, >, 0);
+
+    _LOGT("add test address: %s on ifindex=%d", addr, ifindex);
+
+    nmtstp_ip4_address_add(tdata->f->platform,
+                           -1,
+                           ifindex,
+                           nmtst_inet4_from_string(addr),
+                           24,
+                           nmtst_inet4_from_string(addr),
+                           100000,
+                           0,
+                           0,
+                           NULL);
+}
+
+static void
+_test_l3_ipv4ll_signal_notify(NML3Cfg *                   l3cfg,
+                              const NML3ConfigNotifyData *notify_data,
+                              TestL3IPv4LLData *          tdata)
+{
+    char sbuf_addr[NM_UTILS_INET_ADDRSTRLEN];
+
+    g_assert(NM_IS_L3CFG(l3cfg));
+    g_assert(tdata);
+    g_assert(notify_data);
+    g_assert(_NM_INT_NOT_NEGATIVE(notify_data->notify_type));
+    g_assert(notify_data->notify_type < _NM_L3_CONFIG_NOTIFY_TYPE_NUM);
+
+    if (notify_data->notify_type == NM_L3_CONFIG_NOTIFY_TYPE_IPV4LL_EVENT) {
+        g_assert(tdata->l3ipv4ll == notify_data->ipv4ll_event.ipv4ll);
+        g_assert(NM_IN_SET(tdata->ready_seen, 0, 1));
+        g_assert(NM_IN_SET(tdata->addr_commit, 0, 1));
+
+        if (nm_l3_ipv4ll_get_state(tdata->l3ipv4ll) == NM_L3_IPV4LL_STATE_READY) {
+            g_assert_cmpint(tdata->ready_seen, ==, 0);
+            g_assert_cmpint(tdata->addr_commit, ==, 0);
+            tdata->ready_seen++;
+
+            if (tdata->f->test_idx == 2 && nmtst_get_rand_bool()) {
+                tdata->addr_commit++;
+                tdata->addr_commit_addr = nm_l3_ipv4ll_get_addr(tdata->l3ipv4ll);
+                g_assert(nm_utils_ip4_address_is_link_local(tdata->addr_commit_addr));
+                _LOGT("add address %s that passed ACD",
+                      _nm_utils_inet4_ntop(tdata->addr_commit_addr, sbuf_addr));
+                if (!nm_l3cfg_add_config(nm_l3_ipv4ll_get_l3cfg(tdata->l3ipv4ll),
+                                         TEST_L3_IPV4LL_TAG(tdata, 1),
+                                         nmtst_get_rand_bool(),
+                                         nm_l3_ipv4ll_get_l3cd(tdata->l3ipv4ll),
+                                         NM_L3CFG_CONFIG_PRIORITY_IPV4LL,
+                                         0,
+                                         0,
+                                         104,
+                                         105,
+                                         0,
+                                         0,
+                                         NM_L3_ACD_DEFEND_TYPE_ONCE,
+                                         nmtst_get_rand_bool() ? tdata->acd_timeout_msec : 0u,
+                                         NM_L3_CONFIG_MERGE_FLAGS_NONE))
+                    g_assert_not_reached();
+                nm_l3cfg_commit_on_idle_schedule(nm_l3_ipv4ll_get_l3cfg(tdata->l3ipv4ll));
+
+                tdata->l3cfg_commit_type_1 =
+                    nm_l3cfg_commit_type_register(nm_l3_ipv4ll_get_l3cfg(tdata->l3ipv4ll),
+                                                  NM_L3_CFG_COMMIT_TYPE_UPDATE,
+                                                  tdata->l3cfg_commit_type_1);
+            }
+        } else if (nm_l3_ipv4ll_get_state(tdata->l3ipv4ll) != NM_L3_IPV4LL_STATE_DEFENDING
+                   && tdata->ready_seen > 0) {
+            g_assert_cmpint(tdata->ready_seen, ==, 1);
+            tdata->ready_seen--;
+            if (tdata->addr_commit > 0) {
+                g_assert_cmpint(tdata->addr_commit, ==, 1);
+                tdata->addr_commit--;
+                g_assert(nm_utils_ip4_address_is_link_local(tdata->addr_commit_addr));
+                _LOGT("remove address %s that previously passed ACD",
+                      _nm_utils_inet4_ntop(tdata->addr_commit_addr, sbuf_addr));
+                if (!nm_l3cfg_remove_config_all(nm_l3_ipv4ll_get_l3cfg(tdata->l3ipv4ll),
+                                                TEST_L3_IPV4LL_TAG(tdata, 1),
+                                                FALSE))
+                    g_assert_not_reached();
+                nm_l3cfg_commit_on_idle_schedule(nm_l3_ipv4ll_get_l3cfg(tdata->l3ipv4ll));
+                nm_l3cfg_commit_type_unregister(nm_l3_ipv4ll_get_l3cfg(tdata->l3ipv4ll),
+                                                g_steal_pointer(&tdata->l3cfg_commit_type_1));
+            }
+        }
+        return;
+    }
+}
+
+static void
+test_l3_ipv4ll(gconstpointer test_data)
+{
+    const int                                      TEST_IDX     = GPOINTER_TO_INT(test_data);
+    nm_auto(_test_fixture_1_teardown) TestFixture1 test_fixture = {};
+    const TestFixture1 *                           f;
+    gs_unref_object NML3Cfg *l3cfg0      = NULL;
+    TestL3IPv4LLData         tdata_stack = {
+        .f = NULL,
+    };
+    TestL3IPv4LLData *const tdata                 = &tdata_stack;
+    NMTstpAcdDefender *     acd_defender_1        = NULL;
+    NMTstpAcdDefender *     acd_defender_2        = NULL;
+    nm_auto_unref_l3ipv4ll NML3IPv4LL *  l3ipv4ll = NULL;
+    gint64                               start_time_msec;
+    gint64                               total_poll_time_msec;
+    nm_auto_remove_l3ipv4ll_registration NML3IPv4LLRegistration *l3ipv4ll_reg = NULL;
+    char sbuf_addr[NM_UTILS_INET_ADDRSTRLEN];
+
+    _LOGD("test start (/l3-ipv4ll/%d)", TEST_IDX);
+
+    if (nmtst_test_quick()) {
+        gs_free char *msg =
+            g_strdup_printf("Skipping test: don't run long running test %s (NMTST_DEBUG=slow)\n",
+                            g_get_prgname() ?: "test-l3-ipv4ll");
+
+        g_test_skip(msg);
+        return;
+    }
+
+    f = _test_fixture_1_setup(&test_fixture, TEST_IDX);
+
+    tdata->f = f;
+
+    if (tdata->f->test_idx == 1)
+        tdata->acd_timeout_msec = 0;
+    else
+        tdata->acd_timeout_msec = L3IPV4LL_ACD_TIMEOUT_MSEC;
+
+    _test_l3_ipv4ll_maybe_add_addr_4(tdata, 0, 4, &tdata->has_addr4_101, "192.168.133.101");
+
+    l3cfg0 = _netns_access_l3cfg(f->netns, f->ifindex0);
+
+    g_signal_connect(l3cfg0,
+                     NM_L3CFG_SIGNAL_NOTIFY,
+                     G_CALLBACK(_test_l3_ipv4ll_signal_notify),
+                     tdata);
+
+    l3ipv4ll = nm_l3_ipv4ll_new(l3cfg0);
+
+    tdata->l3ipv4ll = l3ipv4ll;
+
+    g_assert_cmpint(nm_l3_ipv4ll_get_ifindex(l3ipv4ll), ==, f->ifindex0);
+    g_assert_cmpint(nm_l3_ipv4ll_get_state(l3ipv4ll), ==, NM_L3_IPV4LL_STATE_DISABLED);
+    g_assert_cmpint(nm_l3_ipv4ll_get_addr(l3ipv4ll), ==, 0u);
+
+    if (tdata->f->test_idx == 1) {
+        if (nmtst_get_rand_one_case_in(2))
+            l3ipv4ll_reg = nm_l3_ipv4ll_register_new(l3ipv4ll, tdata->acd_timeout_msec);
+    } else
+        l3ipv4ll_reg = nm_l3_ipv4ll_register_new(l3ipv4ll, tdata->acd_timeout_msec);
+
+    g_assert(tdata->acd_timeout_msec == 0 || l3ipv4ll_reg);
+    g_assert(!l3ipv4ll_reg || l3ipv4ll == nm_l3_ipv4ll_register_get_instance(l3ipv4ll_reg));
+
+    if (tdata->acd_timeout_msec == 0) {
+        g_assert_cmpint(nm_l3_ipv4ll_get_state(l3ipv4ll), ==, NM_L3_IPV4LL_STATE_DISABLED);
+        g_assert_cmpint(nm_l3_ipv4ll_get_addr(l3ipv4ll), ==, 0u);
+    } else {
+        g_assert_cmpint(nm_l3_ipv4ll_get_state(l3ipv4ll), ==, NM_L3_IPV4LL_STATE_PROBING);
+        if (f->test_idx == 1) {
+            g_assert_cmpint(nm_l3_ipv4ll_get_addr(l3ipv4ll),
+                            ==,
+                            nmtst_inet4_from_string("169.254.30.158"));
+        } else {
+            g_assert_cmpint(nm_l3_ipv4ll_get_addr(l3ipv4ll),
+                            ==,
+                            nmtst_inet4_from_string("169.254.17.45"));
+        }
+        g_assert(nm_l3_ipv4ll_get_l3cd(l3ipv4ll));
+    }
+
+    _test_l3_ipv4ll_maybe_add_addr_4(tdata, 0, 4, &tdata->has_addr4_101, "192.168.133.101");
+
+    if (tdata->f->test_idx == 2 && nmtst_get_rand_one_case_in(3)) {
+        in_addr_t a = nm_l3_ipv4ll_get_addr(l3ipv4ll);
+
+        g_assert(nm_utils_ip4_address_is_link_local(a));
+        _test_l3_ipv4ll_maybe_add_addr_4(tdata,
+                                         tdata->f->ifindex1,
+                                         2,
+                                         &tdata->add_conflict_done,
+                                         _nm_utils_inet4_ntop(a, sbuf_addr));
+        g_assert_cmpint(tdata->f->hwaddr1.len, ==, sizeof(NMEtherAddr));
+        acd_defender_2 =
+            nmtstp_acd_defender_new(tdata->f->ifindex1, a, &tdata->f->hwaddr1.ether_addr);
+    }
+
+    start_time_msec = nm_utils_get_monotonic_timestamp_msec();
+    total_poll_time_msec =
+        (L3IPV4LL_ACD_TIMEOUT_MSEC * 3 / 2) + (nmtst_get_rand_uint32() % L3IPV4LL_ACD_TIMEOUT_MSEC);
+    _LOGT("poll 1 start (wait %" G_GINT64_FORMAT " msec)", total_poll_time_msec);
+    while (TRUE) {
+        gint64 next_timeout_msec;
+
+        next_timeout_msec =
+            start_time_msec + total_poll_time_msec - nm_utils_get_monotonic_timestamp_msec();
+        if (next_timeout_msec <= 0)
+            break;
+
+        next_timeout_msec = NM_MIN(next_timeout_msec, nmtst_get_rand_uint32() % 1000u);
+        nmtst_main_context_iterate_until(NULL, next_timeout_msec, FALSE);
+        _LOGT("poll 1 intermezzo");
+
+        _test_l3_ipv4ll_maybe_add_addr_4(tdata,
+                                         0,
+                                         1 + total_poll_time_msec / 1000,
+                                         &tdata->has_addr4_101,
+                                         "192.168.133.101");
+
+        if (tdata->addr_commit == 1 && !tdata->add_conflict_checked) {
+            tdata->add_conflict_checked = TRUE;
+            _test_l3_ipv4ll_maybe_add_addr_4(
+                tdata,
+                tdata->f->ifindex1,
+                2,
+                &tdata->add_conflict_done,
+                _nm_utils_inet4_ntop(tdata->addr_commit_addr, sbuf_addr));
+            if (tdata->add_conflict_done)
+                total_poll_time_msec += L3IPV4LL_ACD_TIMEOUT_MSEC / 2;
+            g_assert_cmpint(tdata->f->hwaddr1.len, ==, sizeof(NMEtherAddr));
+            acd_defender_2 = nmtstp_acd_defender_new(tdata->f->ifindex1,
+                                                     tdata->addr_commit_addr,
+                                                     &tdata->f->hwaddr1.ether_addr);
+        }
+    }
+    _LOGT("poll 1 end");
+
+    if (tdata->addr_commit || nmtst_get_rand_bool()) {
+        nm_l3cfg_remove_config_all(nm_l3_ipv4ll_get_l3cfg(l3ipv4ll),
+                                   TEST_L3_IPV4LL_TAG(tdata, 1),
+                                   FALSE);
+    }
+
+    nmtstp_acd_defender_destroy(g_steal_pointer(&acd_defender_1));
+    nmtstp_acd_defender_destroy(g_steal_pointer(&acd_defender_2));
+
+    nm_l3cfg_commit_type_unregister(l3cfg0, g_steal_pointer(&tdata->l3cfg_commit_type_1));
+
+    g_signal_handlers_disconnect_by_func(l3cfg0, G_CALLBACK(_test_l3_ipv4ll_signal_notify), tdata);
+}
+
+/*****************************************************************************/
+
+NMTstpSetupFunc const _nmtstp_setup_platform_func = nm_linux_platform_setup;
+
+void
+_nmtstp_init_tests(int *argc, char ***argv)
+{
+    nmtst_init_with_logging(argc, argv, "ERR", "ALL");
+}
+
+void
+_nmtstp_setup_tests(void)
+{
+    g_test_add_data_func("/l3cfg/1", GINT_TO_POINTER(1), test_l3cfg);
+    g_test_add_data_func("/l3cfg/2", GINT_TO_POINTER(2), test_l3cfg);
+    g_test_add_data_func("/l3cfg/3", GINT_TO_POINTER(3), test_l3cfg);
+    g_test_add_data_func("/l3cfg/4", GINT_TO_POINTER(4), test_l3cfg);
+    g_test_add_data_func("/l3-ipv4ll/1", GINT_TO_POINTER(1), test_l3_ipv4ll);
+    g_test_add_data_func("/l3-ipv4ll/2", GINT_TO_POINTER(2), test_l3_ipv4ll);
+}