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Diffstat (limited to 'tests/qtest/migration/migration-util.c')
| -rw-r--r-- | tests/qtest/migration/migration-util.c | 398 |
1 files changed, 398 insertions, 0 deletions
diff --git a/tests/qtest/migration/migration-util.c b/tests/qtest/migration/migration-util.c new file mode 100644 index 0000000..642cf50 --- /dev/null +++ b/tests/qtest/migration/migration-util.c @@ -0,0 +1,398 @@ +/* + * QTest migration utilities + * + * Copyright (c) 2016-2018 Red Hat, Inc. and/or its affiliates + * based on the vhost-user-test.c that is: + * Copyright (c) 2014 Virtual Open Systems Sarl. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "qemu/ctype.h" +#include "qapi/qapi-visit-sockets.h" +#include "qapi/qobject-input-visitor.h" +#include "qapi/error.h" +#include "qobject/qlist.h" +#include "qemu/cutils.h" +#include "qemu/memalign.h" + +#include "migration/bootfile.h" +#include "migration/migration-util.h" + +#if defined(__linux__) +#include <sys/ioctl.h> +#include <sys/syscall.h> +#endif + +/* for uffd_version_check() */ +#if defined(__linux__) && defined(__NR_userfaultfd) && defined(CONFIG_EVENTFD) +#include <sys/eventfd.h> +#include "qemu/userfaultfd.h" +#endif + +/* For dirty ring test; so far only x86_64 is supported */ +#if defined(__linux__) && defined(HOST_X86_64) +#include "linux/kvm.h" +#endif + + +static char *SocketAddress_to_str(SocketAddress *addr) +{ + switch (addr->type) { + case SOCKET_ADDRESS_TYPE_INET: + return g_strdup_printf("tcp:%s:%s", + addr->u.inet.host, + addr->u.inet.port); + case SOCKET_ADDRESS_TYPE_UNIX: + return g_strdup_printf("unix:%s", + addr->u.q_unix.path); + case SOCKET_ADDRESS_TYPE_FD: + return g_strdup_printf("fd:%s", addr->u.fd.str); + case SOCKET_ADDRESS_TYPE_VSOCK: + return g_strdup_printf("vsock:%s:%s", + addr->u.vsock.cid, + addr->u.vsock.port); + default: + return g_strdup("unknown address type"); + } +} + +static QDict *SocketAddress_to_qdict(SocketAddress *addr) +{ + QDict *dict = qdict_new(); + + switch (addr->type) { + case SOCKET_ADDRESS_TYPE_INET: + qdict_put_str(dict, "type", "inet"); + qdict_put_str(dict, "host", addr->u.inet.host); + qdict_put_str(dict, "port", addr->u.inet.port); + break; + case SOCKET_ADDRESS_TYPE_UNIX: + qdict_put_str(dict, "type", "unix"); + qdict_put_str(dict, "path", addr->u.q_unix.path); + break; + case SOCKET_ADDRESS_TYPE_FD: + qdict_put_str(dict, "type", "fd"); + qdict_put_str(dict, "str", addr->u.fd.str); + break; + case SOCKET_ADDRESS_TYPE_VSOCK: + qdict_put_str(dict, "type", "vsock"); + qdict_put_str(dict, "cid", addr->u.vsock.cid); + qdict_put_str(dict, "port", addr->u.vsock.port); + break; + default: + g_assert_not_reached(); + } + + return dict; +} + +static SocketAddressList *migrate_get_socket_address(QTestState *who) +{ + QDict *rsp; + SocketAddressList *addrs; + Visitor *iv = NULL; + QObject *object; + + rsp = migrate_query(who); + object = qdict_get(rsp, "socket-address"); + + iv = qobject_input_visitor_new(object); + visit_type_SocketAddressList(iv, NULL, &addrs, &error_abort); + visit_free(iv); + + qobject_unref(rsp); + return addrs; +} + +char *migrate_get_connect_uri(QTestState *who) +{ + SocketAddressList *addrs; + char *connect_uri; + + addrs = migrate_get_socket_address(who); + connect_uri = SocketAddress_to_str(addrs->value); + + qapi_free_SocketAddressList(addrs); + return connect_uri; +} + +static QDict * +migrate_get_connect_qdict(QTestState *who) +{ + SocketAddressList *addrs; + QDict *connect_qdict; + + addrs = migrate_get_socket_address(who); + connect_qdict = SocketAddress_to_qdict(addrs->value); + + qapi_free_SocketAddressList(addrs); + return connect_qdict; +} + +void migrate_set_ports(QTestState *to, QList *channel_list) +{ + g_autoptr(QDict) addr = NULL; + QListEntry *entry; + const char *addr_port = NULL; + + QLIST_FOREACH_ENTRY(channel_list, entry) { + QDict *channel = qobject_to(QDict, qlist_entry_obj(entry)); + QDict *addrdict = qdict_get_qdict(channel, "addr"); + + if (!qdict_haskey(addrdict, "port") || + strcmp(qdict_get_str(addrdict, "port"), "0")) { + continue; + } + + /* + * Fetch addr only if needed, so tests that are not yet connected to + * the monitor do not query it. Such tests cannot use port=0. + */ + if (!addr) { + addr = migrate_get_connect_qdict(to); + } + + if (qdict_haskey(addr, "port")) { + addr_port = qdict_get_str(addr, "port"); + qdict_put_str(addrdict, "port", addr_port); + } + } +} + +bool migrate_watch_for_events(QTestState *who, const char *name, + QDict *event, void *opaque) +{ + QTestMigrationState *state = opaque; + + if (g_str_equal(name, "STOP")) { + state->stop_seen = true; + return true; + } else if (g_str_equal(name, "SUSPEND")) { + state->suspend_seen = true; + return true; + } else if (g_str_equal(name, "RESUME")) { + state->resume_seen = true; + return true; + } + + return false; +} + +char *find_common_machine_version(const char *mtype, const char *var1, + const char *var2) +{ + g_autofree char *type1 = qtest_resolve_machine_alias(var1, mtype); + g_autofree char *type2 = qtest_resolve_machine_alias(var2, mtype); + + g_assert(type1 && type2); + + if (g_str_equal(type1, type2)) { + /* either can be used */ + return g_strdup(type1); + } + + if (qtest_has_machine_with_env(var2, type1)) { + return g_strdup(type1); + } + + if (qtest_has_machine_with_env(var1, type2)) { + return g_strdup(type2); + } + + g_test_message("No common machine version for machine type '%s' between " + "binaries %s and %s", mtype, getenv(var1), getenv(var2)); + g_assert_not_reached(); +} + +char *resolve_machine_version(const char *alias, const char *var1, + const char *var2) +{ + const char *mname = g_getenv("QTEST_QEMU_MACHINE_TYPE"); + g_autofree char *machine_name = NULL; + + if (mname) { + const char *dash = strrchr(mname, '-'); + const char *dot = strrchr(mname, '.'); + + machine_name = g_strdup(mname); + + if (dash && dot) { + assert(qtest_has_machine(machine_name)); + return g_steal_pointer(&machine_name); + } + /* else: probably an alias, let it be resolved below */ + } else { + /* use the hardcoded alias */ + machine_name = g_strdup(alias); + } + + return find_common_machine_version(machine_name, var1, var2); +} + +typedef struct { + char *name; + void (*func)(void); + void (*func_full)(void *); +} MigrationTest; + +static void migration_test_destroy(gpointer data) +{ + MigrationTest *test = (MigrationTest *)data; + + g_free(test->name); + g_free(test); +} + +static void migration_test_wrapper(const void *data) +{ + MigrationTest *test = (MigrationTest *)data; + + g_test_message("Running /%s%s", qtest_get_arch(), test->name); + test->func(); +} + +void migration_test_add(const char *path, void (*fn)(void)) +{ + MigrationTest *test = g_new0(MigrationTest, 1); + + test->func = fn; + test->name = g_strdup(path); + + qtest_add_data_func_full(path, test, migration_test_wrapper, + migration_test_destroy); +} + +static void migration_test_wrapper_full(const void *data) +{ + MigrationTest *test = (MigrationTest *)data; + + g_test_message("Running /%s%s", qtest_get_arch(), test->name); + test->func_full(test->name); +} + +void migration_test_add_suffix(const char *path, const char *suffix, + void (*fn)(void *)) +{ + MigrationTest *test = g_new0(MigrationTest, 1); + + g_assert(g_str_has_suffix(path, "/")); + g_assert(!g_str_has_prefix(suffix, "/")); + + test->func_full = fn; + test->name = g_strconcat(path, suffix, NULL); + + qtest_add_data_func_full(test->name, test, migration_test_wrapper_full, + migration_test_destroy); +} + +#ifdef O_DIRECT +/* + * Probe for O_DIRECT support on the filesystem. Since this is used + * for tests, be conservative, if anything fails, assume it's + * unsupported. + */ +bool probe_o_direct_support(const char *tmpfs) +{ + g_autofree char *filename = g_strdup_printf("%s/probe-o-direct", tmpfs); + int fd, flags = O_CREAT | O_RDWR | O_TRUNC | O_DIRECT; + void *buf; + ssize_t ret, len; + uint64_t offset; + + fd = open(filename, flags, 0660); + if (fd < 0) { + unlink(filename); + return false; + } + + /* + * Using 1MB alignment as conservative choice to satisfy any + * plausible architecture default page size, and/or filesystem + * alignment restrictions. + */ + len = 0x100000; + offset = 0x100000; + + buf = qemu_try_memalign(len, len); + g_assert(buf); + memset(buf, 0, len); + + ret = pwrite(fd, buf, len, offset); + unlink(filename); + g_free(buf); + + if (ret < 0) { + return false; + } + + return true; +} +#endif + +#if defined(__linux__) && defined(__NR_userfaultfd) && defined(CONFIG_EVENTFD) +bool ufd_version_check(bool *uffd_feature_thread_id) +{ + struct uffdio_api api_struct; + uint64_t ioctl_mask; + + int ufd = uffd_open(O_CLOEXEC); + + if (ufd == -1) { + g_test_message("Skipping test: userfaultfd not available"); + return false; + } + + api_struct.api = UFFD_API; + api_struct.features = 0; + if (ioctl(ufd, UFFDIO_API, &api_struct)) { + g_test_message("Skipping test: UFFDIO_API failed"); + return false; + } + + if (uffd_feature_thread_id) { + *uffd_feature_thread_id = api_struct.features & UFFD_FEATURE_THREAD_ID; + } + + ioctl_mask = (1ULL << _UFFDIO_REGISTER | + 1ULL << _UFFDIO_UNREGISTER); + if ((api_struct.ioctls & ioctl_mask) != ioctl_mask) { + g_test_message("Skipping test: Missing userfault feature"); + return false; + } + + return true; +} +#else +bool ufd_version_check(bool *uffd_feature_thread_id) +{ + g_test_message("Skipping test: Userfault not available (builtdtime)"); + return false; +} +#endif + +bool kvm_dirty_ring_supported(void) +{ +#if defined(__linux__) && defined(HOST_X86_64) + int ret, kvm_fd = open("/dev/kvm", O_RDONLY); + + if (kvm_fd < 0) { + return false; + } + + ret = ioctl(kvm_fd, KVM_CHECK_EXTENSION, KVM_CAP_DIRTY_LOG_RING); + close(kvm_fd); + + /* We test with 4096 slots */ + if (ret < 4096) { + return false; + } + + return true; +#else + return false; +#endif +} |