/* * QTest testcase for the vhost-user * * 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 "libqtest-single.h" #include "qapi/error.h" #include "qapi/qmp/qdict.h" #include "qemu/config-file.h" #include "qemu/option.h" #include "qemu/range.h" #include "qemu/sockets.h" #include "chardev/char-fe.h" #include "qemu/memfd.h" #include "qemu/module.h" #include "sysemu/sysemu.h" #include "libqos/libqos.h" #include "libqos/pci-pc.h" #include "libqos/virtio-pci.h" #include "libqos/malloc-pc.h" #include "libqos/qgraph_internal.h" #include "hw/virtio/virtio-net.h" #include "standard-headers/linux/vhost_types.h" #include "standard-headers/linux/virtio_ids.h" #include "standard-headers/linux/virtio_net.h" #include "standard-headers/linux/virtio_gpio.h" #ifdef CONFIG_LINUX #include #endif #define QEMU_CMD_MEM " -m %d -object memory-backend-file,id=mem,size=%dM," \ "mem-path=%s,share=on -numa node,memdev=mem" #define QEMU_CMD_MEMFD " -m %d -object memory-backend-memfd,id=mem,size=%dM," \ " -numa node,memdev=mem" #define QEMU_CMD_CHR " -chardev socket,id=%s,path=%s%s" #define QEMU_CMD_NETDEV " -netdev vhost-user,id=hs0,chardev=%s,vhostforce=on" #define HUGETLBFS_MAGIC 0x958458f6 /*********** FROM hw/virtio/vhost-user.c *************************************/ #define VHOST_MEMORY_MAX_NREGIONS 8 #define VHOST_MAX_VIRTQUEUES 0x100 #define VHOST_USER_F_PROTOCOL_FEATURES 30 #define VIRTIO_F_VERSION_1 32 #define VHOST_USER_PROTOCOL_F_MQ 0 #define VHOST_USER_PROTOCOL_F_LOG_SHMFD 1 #define VHOST_USER_PROTOCOL_F_CROSS_ENDIAN 6 #define VHOST_USER_PROTOCOL_F_CONFIG 9 #define VHOST_LOG_PAGE 0x1000 typedef enum VhostUserRequest { VHOST_USER_NONE = 0, VHOST_USER_GET_FEATURES = 1, VHOST_USER_SET_FEATURES = 2, VHOST_USER_SET_OWNER = 3, VHOST_USER_RESET_OWNER = 4, VHOST_USER_SET_MEM_TABLE = 5, VHOST_USER_SET_LOG_BASE = 6, VHOST_USER_SET_LOG_FD = 7, VHOST_USER_SET_VRING_NUM = 8, VHOST_USER_SET_VRING_ADDR = 9, VHOST_USER_SET_VRING_BASE = 10, VHOST_USER_GET_VRING_BASE = 11, VHOST_USER_SET_VRING_KICK = 12, VHOST_USER_SET_VRING_CALL = 13, VHOST_USER_SET_VRING_ERR = 14, VHOST_USER_GET_PROTOCOL_FEATURES = 15, VHOST_USER_SET_PROTOCOL_FEATURES = 16, VHOST_USER_GET_QUEUE_NUM = 17, VHOST_USER_SET_VRING_ENABLE = 18, VHOST_USER_GET_CONFIG = 24, VHOST_USER_SET_CONFIG = 25, VHOST_USER_MAX } VhostUserRequest; typedef struct VhostUserMemoryRegion { uint64_t guest_phys_addr; uint64_t memory_size; uint64_t userspace_addr; uint64_t mmap_offset; } VhostUserMemoryRegion; typedef struct VhostUserMemory { uint32_t nregions; uint32_t padding; VhostUserMemoryRegion regions[VHOST_MEMORY_MAX_NREGIONS]; } VhostUserMemory; typedef struct VhostUserLog { uint64_t mmap_size; uint64_t mmap_offset; } VhostUserLog; typedef struct VhostUserMsg { VhostUserRequest request; #define VHOST_USER_VERSION_MASK (0x3) #define VHOST_USER_REPLY_MASK (0x1<<2) uint32_t flags; uint32_t size; /* the following payload size */ union { #define VHOST_USER_VRING_IDX_MASK (0xff) #define VHOST_USER_VRING_NOFD_MASK (0x1<<8) uint64_t u64; struct vhost_vring_state state; struct vhost_vring_addr addr; VhostUserMemory memory; VhostUserLog log; } payload; } QEMU_PACKED VhostUserMsg; static VhostUserMsg m __attribute__ ((unused)); #define VHOST_USER_HDR_SIZE (sizeof(m.request) \ + sizeof(m.flags) \ + sizeof(m.size)) #define VHOST_USER_PAYLOAD_SIZE (sizeof(m) - VHOST_USER_HDR_SIZE) /* The version of the protocol we support */ #define VHOST_USER_VERSION (0x1) /*****************************************************************************/ enum { TEST_FLAGS_OK, TEST_FLAGS_DISCONNECT, TEST_FLAGS_BAD, TEST_FLAGS_END, }; enum { VHOST_USER_NET, VHOST_USER_GPIO, }; typedef struct TestServer { gchar *socket_path; gchar *mig_path; gchar *chr_name; gchar *tmpfs; CharBackend chr; int fds_num; int fds[VHOST_MEMORY_MAX_NREGIONS]; VhostUserMemory memory; GMainContext *context; GMainLoop *loop; GThread *thread; GMutex data_mutex; GCond data_cond; int log_fd; uint64_t rings; bool test_fail; int test_flags; int queues; struct vhost_user_ops *vu_ops; } TestServer; struct vhost_user_ops { /* Device types. */ int type; void (*append_opts)(TestServer *s, GString *cmd_line, const char *chr_opts); /* VHOST-USER commands. */ uint64_t (*get_features)(TestServer *s); void (*set_features)(TestServer *s, CharBackend *chr, VhostUserMsg *msg); void (*get_protocol_features)(TestServer *s, CharBackend *chr, VhostUserMsg *msg); }; static const char *init_hugepagefs(void); static TestServer *test_server_new(const gchar *name, struct vhost_user_ops *ops); static void test_server_free(TestServer *server); static void test_server_listen(TestServer *server); enum test_memfd { TEST_MEMFD_AUTO, TEST_MEMFD_YES, TEST_MEMFD_NO, }; static void append_vhost_net_opts(TestServer *s, GString *cmd_line, const char *chr_opts) { g_string_append_printf(cmd_line, QEMU_CMD_CHR QEMU_CMD_NETDEV, s->chr_name, s->socket_path, chr_opts, s->chr_name); } /* * For GPIO there are no other magic devices we need to add (like * block or netdev) so all we need to worry about is the vhost-user * chardev socket. */ static void append_vhost_gpio_opts(TestServer *s, GString *cmd_line, const char *chr_opts) { g_string_append_printf(cmd_line, QEMU_CMD_CHR, s->chr_name, s->socket_path, chr_opts); } static void append_mem_opts(TestServer *server, GString *cmd_line, int size, enum test_memfd memfd) { if (memfd == TEST_MEMFD_AUTO) { memfd = qemu_memfd_check(MFD_ALLOW_SEALING) ? TEST_MEMFD_YES : TEST_MEMFD_NO; } if (memfd == TEST_MEMFD_YES) { g_string_append_printf(cmd_line, QEMU_CMD_MEMFD, size, size); } else { const char *root = init_hugepagefs() ? : server->tmpfs; g_string_append_printf(cmd_line, QEMU_CMD_MEM, size, size, root); } } static bool wait_for_fds(TestServer *s) { gint64 end_time; bool got_region; int i; g_mutex_lock(&s->data_mutex); end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; while (!s->fds_num) { if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) { /* timeout has passed */ g_assert(s->fds_num); break; } } /* check for sanity */ g_assert_cmpint(s->fds_num, >, 0); g_assert_cmpint(s->fds_num, ==, s->memory.nregions); g_mutex_unlock(&s->data_mutex); got_region = false; for (i = 0; i < s->memory.nregions; ++i) { VhostUserMemoryRegion *reg = &s->memory.regions[i]; if (reg->guest_phys_addr == 0) { got_region = true; break; } } if (!got_region) { g_test_skip("No memory at address 0x0"); } return got_region; } static void read_guest_mem_server(QTestState *qts, TestServer *s) { uint8_t *guest_mem; int i, j; size_t size; g_mutex_lock(&s->data_mutex); /* iterate all regions */ for (i = 0; i < s->fds_num; i++) { /* We'll check only the region statring at 0x0*/ if (s->memory.regions[i].guest_phys_addr != 0x0) { continue; } g_assert_cmpint(s->memory.regions[i].memory_size, >, 1024); size = s->memory.regions[i].memory_size + s->memory.regions[i].mmap_offset; guest_mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, s->fds[i], 0); g_assert(guest_mem != MAP_FAILED); guest_mem += (s->memory.regions[i].mmap_offset / sizeof(*guest_mem)); for (j = 0; j < 1024; j++) { uint32_t a = qtest_readb(qts, s->memory.regions[i].guest_phys_addr + j); uint32_t b = guest_mem[j]; g_assert_cmpint(a, ==, b); } munmap(guest_mem, s->memory.regions[i].memory_size); } g_mutex_unlock(&s->data_mutex); } static void *thread_function(void *data) { GMainLoop *loop = data; g_main_loop_run(loop); return NULL; } static int chr_can_read(void *opaque) { return VHOST_USER_HDR_SIZE; } static void chr_read(void *opaque, const uint8_t *buf, int size) { g_autoptr(GError) err = NULL; TestServer *s = opaque; CharBackend *chr = &s->chr; VhostUserMsg msg; uint8_t *p = (uint8_t *) &msg; int fd = -1; if (s->test_fail) { qemu_chr_fe_disconnect(chr); /* now switch to non-failure */ s->test_fail = false; } if (size != VHOST_USER_HDR_SIZE) { qos_printf("%s: Wrong message size received %d\n", __func__, size); return; } g_mutex_lock(&s->data_mutex); memcpy(p, buf, VHOST_USER_HDR_SIZE); if (msg.size) { p += VHOST_USER_HDR_SIZE; size = qemu_chr_fe_read_all(chr, p, msg.size); if (size != msg.size) { qos_printf("%s: Wrong message size received %d != %d\n", __func__, size, msg.size); goto out; } } switch (msg.request) { case VHOST_USER_GET_FEATURES: /* Mandatory for tests to define get_features */ g_assert(s->vu_ops->get_features); /* send back features to qemu */ msg.flags |= VHOST_USER_REPLY_MASK; msg.size = sizeof(m.payload.u64); if (s->test_flags >= TEST_FLAGS_BAD) { msg.payload.u64 = 0; s->test_flags = TEST_FLAGS_END; } else { msg.payload.u64 = s->vu_ops->get_features(s); } qemu_chr_fe_write_all(chr, (uint8_t *) &msg, VHOST_USER_HDR_SIZE + msg.size); break; case VHOST_USER_SET_FEATURES: if (s->vu_ops->set_features) { s->vu_ops->set_features(s, chr, &msg); } break; case VHOST_USER_SET_OWNER: /* * We don't need to do anything here, the remote is just * letting us know it is in charge. Just log it. */ qos_printf("set_owner: start of session\n"); break; case VHOST_USER_GET_PROTOCOL_FEATURES: if (s->vu_ops->get_protocol_features) { s->vu_ops->get_protocol_features(s, chr, &msg); } break; case VHOST_USER_GET_CONFIG: /* * Treat GET_CONFIG as a NOP and just reply and let the guest * consider we have updated its memory. Tests currently don't * require working configs. */ msg.flags |= VHOST_USER_REPLY_MASK; p = (uint8_t *) &msg; qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size); break; case VHOST_USER_SET_PROTOCOL_FEATURES: /* * We did set VHOST_USER_F_PROTOCOL_FEATURES so its valid for * the remote end to send this. There is no handshake reply so * just log the details for debugging. */ qos_printf("set_protocol_features: 0x%"PRIx64 "\n", msg.payload.u64); break; /* * A real vhost-user backend would actually set the size and * address of the vrings but we can simply report them. */ case VHOST_USER_SET_VRING_NUM: qos_printf("set_vring_num: %d/%d\n", msg.payload.state.index, msg.payload.state.num); break; case VHOST_USER_SET_VRING_ADDR: qos_printf("set_vring_addr: 0x%"PRIx64"/0x%"PRIx64"/0x%"PRIx64"\n", msg.payload.addr.avail_user_addr, msg.payload.addr.desc_user_addr, msg.payload.addr.used_user_addr); break; case VHOST_USER_GET_VRING_BASE: /* send back vring base to qemu */ msg.flags |= VHOST_USER_REPLY_MASK; msg.size = sizeof(m.payload.state); msg.payload.state.num = 0; p = (uint8_t *) &msg; qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size); assert(msg.payload.state.index < s->queues * 2); s->rings &= ~(0x1ULL << msg.payload.state.index); g_cond_broadcast(&s->data_cond); break; case VHOST_USER_SET_MEM_TABLE: /* received the mem table */ memcpy(&s->memory, &msg.payload.memory, sizeof(msg.payload.memory)); s->fds_num = qemu_chr_fe_get_msgfds(chr, s->fds, G_N_ELEMENTS(s->fds)); /* signal the test that it can continue */ g_cond_broadcast(&s->data_cond); break; case VHOST_USER_SET_VRING_KICK: case VHOST_USER_SET_VRING_CALL: /* consume the fd */ qemu_chr_fe_get_msgfds(chr, &fd, 1); /* * This is a non-blocking eventfd. * The receive function forces it to be blocking, * so revert it back to non-blocking. */ g_unix_set_fd_nonblocking(fd, true, &err); g_assert_no_error(err); break; case VHOST_USER_SET_LOG_BASE: if (s->log_fd != -1) { close(s->log_fd); s->log_fd = -1; } qemu_chr_fe_get_msgfds(chr, &s->log_fd, 1); msg.flags |= VHOST_USER_REPLY_MASK; msg.size = 0; p = (uint8_t *) &msg; qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE); g_cond_broadcast(&s->data_cond); break; case VHOST_USER_SET_VRING_BASE: assert(msg.payload.state.index < s->queues * 2); s->rings |= 0x1ULL << msg.payload.state.index; g_cond_broadcast(&s->data_cond); break; case VHOST_USER_GET_QUEUE_NUM: msg.flags |= VHOST_USER_REPLY_MASK; msg.size = sizeof(m.payload.u64); msg.payload.u64 = s->queues; p = (uint8_t *) &msg; qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size); break; case VHOST_USER_SET_VRING_ENABLE: /* * Another case we ignore as we don't need to respond. With a * fully functioning vhost-user we would enable/disable the * vring monitoring. */ qos_printf("set_vring(%d)=%s\n", msg.payload.state.index, msg.payload.state.num ? "enabled" : "disabled"); break; default: qos_printf("vhost-user: un-handled message: %d\n", msg.request); break; } out: g_mutex_unlock(&s->data_mutex); } static const char *init_hugepagefs(void) { #ifdef CONFIG_LINUX static const char *hugepagefs; const char *path = getenv("QTEST_HUGETLBFS_PATH"); struct statfs fs; int ret; if (hugepagefs) { return hugepagefs; } if (!path) { return NULL; } if (access(path, R_OK | W_OK | X_OK)) { qos_printf("access on path (%s): %s", path, strerror(errno)); g_test_fail(); return NULL; } do { ret = statfs(path, &fs); } while (ret != 0 && errno == EINTR); if (ret != 0) { qos_printf("statfs on path (%s): %s", path, strerror(errno)); g_test_fail(); return NULL; } if (fs.f_type != HUGETLBFS_MAGIC) { qos_printf("Warning: path not on HugeTLBFS: %s", path); g_test_fail(); return NULL; } hugepagefs = path; return hugepagefs; #else return NULL; #endif } static TestServer *test_server_new(const gchar *name, struct vhost_user_ops *ops) { TestServer *server = g_new0(TestServer, 1); g_autofree const char *tmpfs = NULL; GError *err = NULL; server->context = g_main_context_new(); server->loop = g_main_loop_new(server->context, FALSE); /* run the main loop thread so the chardev may operate */ server->thread = g_thread_new(NULL, thread_function, server->loop); tmpfs = g_dir_make_tmp("vhost-test-XXXXXX", &err); if (!tmpfs) { g_test_message("Can't create temporary directory in %s: %s", g_get_tmp_dir(), err->message); g_error_free(err); } g_assert(tmpfs); server->tmpfs = g_strdup(tmpfs); server->socket_path = g_strdup_printf("%s/%s.sock", tmpfs, name); server->mig_path = g_strdup_printf("%s/%s.mig", tmpfs, name); server->chr_name = g_strdup_printf("chr-%s", name); g_mutex_init(&server->data_mutex); g_cond_init(&server->data_cond); server->log_fd = -1; server->queues = 1; server->vu_ops = ops; return server; } static void chr_event(void *opaque, QEMUChrEvent event) { TestServer *s = opaque; if (s->test_flags == TEST_FLAGS_END && event == CHR_EVENT_CLOSED) { s->test_flags = TEST_FLAGS_OK; } } static void test_server_create_chr(TestServer *server, const gchar *opt) { g_autofree gchar *chr_path = g_strdup_printf("unix:%s%s", server->socket_path, opt); Chardev *chr; chr = qemu_chr_new(server->chr_name, chr_path, server->context); g_assert(chr); qemu_chr_fe_init(&server->chr, chr, &error_abort); qemu_chr_fe_set_handlers(&server->chr, chr_can_read, chr_read, chr_event, NULL, server, server->context, true); } static void test_server_listen(TestServer *server) { test_server_create_chr(server, ",server=on,wait=off"); } static void test_server_free(TestServer *server) { int i, ret; /* finish the helper thread and dispatch pending sources */ g_main_loop_quit(server->loop); g_thread_join(server->thread); while (g_main_context_pending(NULL)) { g_main_context_iteration(NULL, TRUE); } unlink(server->socket_path); g_free(server->socket_path); unlink(server->mig_path); g_free(server->mig_path); ret = rmdir(server->tmpfs); if (ret != 0) { g_test_message("unable to rmdir: path (%s): %s", server->tmpfs, strerror(errno)); } g_free(server->tmpfs); qemu_chr_fe_deinit(&server->chr, true); for (i = 0; i < server->fds_num; i++) { close(server->fds[i]); } if (server->log_fd != -1) { close(server->log_fd); } g_free(server->chr_name); g_main_loop_unref(server->loop); g_main_context_unref(server->context); g_cond_clear(&server->data_cond); g_mutex_clear(&server->data_mutex); g_free(server); } static void wait_for_log_fd(TestServer *s) { gint64 end_time; g_mutex_lock(&s->data_mutex); end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; while (s->log_fd == -1) { if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) { /* timeout has passed */ g_assert(s->log_fd != -1); break; } } g_mutex_unlock(&s->data_mutex); } static void write_guest_mem(TestServer *s, uint32_t seed) { uint32_t *guest_mem; int i, j; size_t size; /* iterate all regions */ for (i = 0; i < s->fds_num; i++) { /* We'll write only the region statring at 0x0 */ if (s->memory.regions[i].guest_phys_addr != 0x0) { continue; } g_assert_cmpint(s->memory.regions[i].memory_size, >, 1024); size = s->memory.regions[i].memory_size + s->memory.regions[i].mmap_offset; guest_mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, s->fds[i], 0); g_assert(guest_mem != MAP_FAILED); guest_mem += (s->memory.regions[i].mmap_offset / sizeof(*guest_mem)); for (j = 0; j < 256; j++) { guest_mem[j] = seed + j; } munmap(guest_mem, s->memory.regions[i].memory_size); break; } } static guint64 get_log_size(TestServer *s) { guint64 log_size = 0; int i; for (i = 0; i < s->memory.nregions; ++i) { VhostUserMemoryRegion *reg = &s->memory.regions[i]; guint64 last = range_get_last(reg->guest_phys_addr, reg->memory_size); log_size = MAX(log_size, last / (8 * VHOST_LOG_PAGE) + 1); } return log_size; } typedef struct TestMigrateSource { GSource source; TestServer *src; TestServer *dest; } TestMigrateSource; static gboolean test_migrate_source_check(GSource *source) { TestMigrateSource *t = (TestMigrateSource *)source; gboolean overlap = t->src->rings && t->dest->rings; g_assert(!overlap); return FALSE; } GSourceFuncs test_migrate_source_funcs = { .check = test_migrate_source_check, }; static void vhost_user_test_cleanup(void *s) { TestServer *server = s; qos_invalidate_command_line(); test_server_free(server); } static void *vhost_user_test_setup(GString *cmd_line, void *arg) { TestServer *server = test_server_new("vhost-user-test", arg); test_server_listen(server); append_mem_opts(server, cmd_line, 256, TEST_MEMFD_AUTO); server->vu_ops->append_opts(server, cmd_line, ""); g_test_queue_destroy(vhost_user_test_cleanup, server); return server; } static void *vhost_user_test_setup_memfd(GString *cmd_line, void *arg) { TestServer *server = test_server_new("vhost-user-test", arg); test_server_listen(server); append_mem_opts(server, cmd_line, 256, TEST_MEMFD_YES); server->vu_ops->append_opts(server, cmd_line, ""); g_test_queue_destroy(vhost_user_test_cleanup, server); return server; } static void test_read_guest_mem(void *obj, void *arg, QGuestAllocator *alloc) { TestServer *server = arg; if (!wait_for_fds(server)) { return; } read_guest_mem_server(global_qtest, server); } static void test_migrate(void *obj, void *arg, QGuestAllocator *alloc) { TestServer *s = arg; TestServer *dest; GString *dest_cmdline; char *uri; QTestState *to; GSource *source; QDict *rsp; guint8 *log; guint64 size; if (!wait_for_fds(s)) { return; } dest = test_server_new("dest", s->vu_ops); dest_cmdline = g_string_new(qos_get_current_command_line()); uri = g_strdup_printf("%s%s", "unix:", dest->mig_path); size = get_log_size(s); g_assert_cmpint(size, ==, (256 * 1024 * 1024) / (VHOST_LOG_PAGE * 8)); test_server_listen(dest); g_string_append_printf(dest_cmdline, " -incoming %s", uri); append_mem_opts(dest, dest_cmdline, 256, TEST_MEMFD_AUTO); dest->vu_ops->append_opts(dest, dest_cmdline, ""); to = qtest_init(dest_cmdline->str); /* This would be where you call qos_allocate_objects(to, NULL), if you want * to talk to the QVirtioNet object on the destination. */ source = g_source_new(&test_migrate_source_funcs, sizeof(TestMigrateSource)); ((TestMigrateSource *)source)->src = s; ((TestMigrateSource *)source)->dest = dest; g_source_attach(source, s->context); /* slow down migration to have time to fiddle with log */ /* TODO: qtest could learn to break on some places */ rsp = qmp("{ 'execute': 'migrate-set-parameters'," "'arguments': { 'max-bandwidth': 10 } }"); g_assert(qdict_haskey(rsp, "return")); qobject_unref(rsp); rsp = qmp("{ 'execute': 'migrate', 'arguments': { 'uri': %s } }", uri); g_assert(qdict_haskey(rsp, "return")); qobject_unref(rsp); wait_for_log_fd(s); log = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, s->log_fd, 0); g_assert(log != MAP_FAILED); /* modify first page */ write_guest_mem(s, 0x42); log[0] = 1; munmap(log, size); /* speed things up */ rsp = qmp("{ 'execute': 'migrate-set-parameters'," "'arguments': { 'max-bandwidth': 0 } }"); g_assert(qdict_haskey(rsp, "return")); qobject_unref(rsp); qmp_eventwait("STOP"); qtest_qmp_eventwait(to, "RESUME"); g_assert(wait_for_fds(dest)); read_guest_mem_server(to, dest); g_source_destroy(source); g_source_unref(source); qtest_quit(to); test_server_free(dest); g_free(uri); g_string_free(dest_cmdline, true); } static void wait_for_rings_started(TestServer *s, size_t count) { gint64 end_time; g_mutex_lock(&s->data_mutex); end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND; while (ctpop64(s->rings) != count) { if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) { /* timeout has passed */ g_assert_cmpint(ctpop64(s->rings), ==, count); break; } } g_mutex_unlock(&s->data_mutex); } static inline void test_server_connect(TestServer *server) { test_server_create_chr(server, ",reconnect=1"); } static gboolean reconnect_cb(gpointer user_data) { TestServer *s = user_data; qemu_chr_fe_disconnect(&s->chr); return FALSE; } static gpointer connect_thread(gpointer data) { TestServer *s = data; /* wait for qemu to start before first try, to avoid extra warnings */ g_usleep(G_USEC_PER_SEC); test_server_connect(s); return NULL; } static void *vhost_user_test_setup_reconnect(GString *cmd_line, void *arg) { TestServer *s = test_server_new("reconnect", arg); g_thread_new("connect", connect_thread, s); append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO); s->vu_ops->append_opts(s, cmd_line, ",server=on"); g_test_queue_destroy(vhost_user_test_cleanup, s); return s; } static void test_reconnect(void *obj, void *arg, QGuestAllocator *alloc) { TestServer *s = arg; GSource *src; if (!wait_for_fds(s)) { return; } wait_for_rings_started(s, 2); /* reconnect */ s->fds_num = 0; s->rings = 0; src = g_idle_source_new(); g_source_set_callback(src, reconnect_cb, s, NULL); g_source_attach(src, s->context); g_source_unref(src); g_assert(wait_for_fds(s)); wait_for_rings_started(s, 2); } static void *vhost_user_test_setup_connect_fail(GString *cmd_line, void *arg) { TestServer *s = test_server_new("connect-fail", arg); s->test_fail = true; g_thread_new("connect", connect_thread, s); append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO); s->vu_ops->append_opts(s, cmd_line, ",server=on"); g_test_queue_destroy(vhost_user_test_cleanup, s); return s; } static void *vhost_user_test_setup_flags_mismatch(GString *cmd_line, void *arg) { TestServer *s = test_server_new("flags-mismatch", arg); s->test_flags = TEST_FLAGS_DISCONNECT; g_thread_new("connect", connect_thread, s); append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO); s->vu_ops->append_opts(s, cmd_line, ",server=on"); g_test_queue_destroy(vhost_user_test_cleanup, s); return s; } static void test_vhost_user_started(void *obj, void *arg, QGuestAllocator *alloc) { TestServer *s = arg; if (!wait_for_fds(s)) { return; } wait_for_rings_started(s, 2); } static void *vhost_user_test_setup_multiqueue(GString *cmd_line, void *arg) { TestServer *s = vhost_user_test_setup(cmd_line, arg); s->queues = 2; g_string_append_printf(cmd_line, " -set netdev.hs0.queues=%d" " -global virtio-net-pci.vectors=%d", s->queues, s->queues * 2 + 2); return s; } static void test_multiqueue(void *obj, void *arg, QGuestAllocator *alloc) { TestServer *s = arg; wait_for_rings_started(s, s->queues * 2); } static uint64_t vu_net_get_features(TestServer *s) { uint64_t features = 0x1ULL << VHOST_F_LOG_ALL | 0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES; if (s->queues > 1) { features |= 0x1ULL << VIRTIO_NET_F_MQ; } return features; } static void vu_net_set_features(TestServer *s, CharBackend *chr, VhostUserMsg *msg) { g_assert(msg->payload.u64 & (0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES)); if (s->test_flags == TEST_FLAGS_DISCONNECT) { qemu_chr_fe_disconnect(chr); s->test_flags = TEST_FLAGS_BAD; } } static void vu_net_get_protocol_features(TestServer *s, CharBackend *chr, VhostUserMsg *msg) { /* send back features to qemu */ msg->flags |= VHOST_USER_REPLY_MASK; msg->size = sizeof(m.payload.u64); msg->payload.u64 = 1 << VHOST_USER_PROTOCOL_F_LOG_SHMFD; msg->payload.u64 |= 1 << VHOST_USER_PROTOCOL_F_CROSS_ENDIAN; if (s->queues > 1) { msg->payload.u64 |= 1 << VHOST_USER_PROTOCOL_F_MQ; } qemu_chr_fe_write_all(chr, (uint8_t *)msg, VHOST_USER_HDR_SIZE + msg->size); } /* Each VHOST-USER device should have its ops structure defined. */ static struct vhost_user_ops g_vu_net_ops = { .type = VHOST_USER_NET, .append_opts = append_vhost_net_opts, .get_features = vu_net_get_features, .set_features = vu_net_set_features, .get_protocol_features = vu_net_get_protocol_features, }; static void register_vhost_user_test(void) { QOSGraphTestOptions opts = { .before = vhost_user_test_setup, .subprocess = true, .arg = &g_vu_net_ops, }; qemu_add_opts(&qemu_chardev_opts); qos_add_test("vhost-user/read-guest-mem/memfile", "virtio-net", test_read_guest_mem, &opts); if (qemu_memfd_check(MFD_ALLOW_SEALING)) { opts.before = vhost_user_test_setup_memfd; qos_add_test("vhost-user/read-guest-mem/memfd", "virtio-net", test_read_guest_mem, &opts); } qos_add_test("vhost-user/migrate", "virtio-net", test_migrate, &opts); opts.before = vhost_user_test_setup_reconnect; qos_add_test("vhost-user/reconnect", "virtio-net", test_reconnect, &opts); opts.before = vhost_user_test_setup_connect_fail; qos_add_test("vhost-user/connect-fail", "virtio-net", test_vhost_user_started, &opts); opts.before = vhost_user_test_setup_flags_mismatch; qos_add_test("vhost-user/flags-mismatch", "virtio-net", test_vhost_user_started, &opts); opts.before = vhost_user_test_setup_multiqueue; opts.edge.extra_device_opts = "mq=on"; qos_add_test("vhost-user/multiqueue", "virtio-net", test_multiqueue, &opts); } libqos_init(register_vhost_user_test); static uint64_t vu_gpio_get_features(TestServer *s) { return 0x1ULL << VIRTIO_F_VERSION_1 | 0x1ULL << VIRTIO_GPIO_F_IRQ | 0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES; } /* * This stub can't handle all the message types but we should reply * that we support VHOST_USER_PROTOCOL_F_CONFIG as gpio would use it * talking to a read vhost-user daemon. */ static void vu_gpio_get_protocol_features(TestServer *s, CharBackend *chr, VhostUserMsg *msg) { /* send back features to qemu */ msg->flags |= VHOST_USER_REPLY_MASK; msg->size = sizeof(m.payload.u64); msg->payload.u64 = 1ULL << VHOST_USER_PROTOCOL_F_CONFIG; qemu_chr_fe_write_all(chr, (uint8_t *)msg, VHOST_USER_HDR_SIZE + msg->size); } static struct vhost_user_ops g_vu_gpio_ops = { .type = VHOST_USER_GPIO, .append_opts = append_vhost_gpio_opts, .get_features = vu_gpio_get_features, .set_features = vu_net_set_features, .get_protocol_features = vu_gpio_get_protocol_features, }; static void register_vhost_gpio_test(void) { QOSGraphTestOptions opts = { .before = vhost_user_test_setup, .subprocess = true, .arg = &g_vu_gpio_ops, }; qemu_add_opts(&qemu_chardev_opts); qos_add_test("read-guest-mem/memfile", "vhost-user-gpio", test_read_guest_mem, &opts); } libqos_init(register_vhost_gpio_test);