From: Marc-André Lureau <marcandre.lur...@redhat.com>
Adds 4 ivshmemtests:
- single qemu instance and basic IO
- pair of instances, check memory sharing
- pair of instances with server, and MSIX
- hot plug/unplug
A temporary shm is created as well as a directory to place server
socket, both should be clear on exit and abort.
Cc: Cam Macdonell <c...@cs.ualberta.ca>
CC: Andreas Färber <afaer...@suse.de>
Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/Makefile | 3 +
tests/ivshmem-test.c | 474 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 477 insertions(+)
create mode 100644 tests/ivshmem-test.c
diff --git a/tests/Makefile b/tests/Makefile
index 34c6136..e7a50e7 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -142,6 +142,8 @@ gcov-files-pci-y += hw/display/virtio-gpu-pci.c
gcov-files-pci-$(CONFIG_VIRTIO_VGA) += hw/display/virtio-vga.c
check-qtest-pci-y += tests/intel-hda-test$(EXESUF)
gcov-files-pci-y += hw/audio/intel-hda.c hw/audio/hda-codec.c
+check-qtest-pci-$(CONFIG_LINUX) += tests/ivshmem-test$(EXESUF)
+gcov-files-pci-y += hw/misc/ivshmem.c
check-qtest-i386-y = tests/endianness-test$(EXESUF)
check-qtest-i386-y += tests/fdc-test$(EXESUF)
@@ -416,6 +418,7 @@ tests/vhost-user-test$(EXESUF): tests/vhost-user-test.o
qemu-char.o qemu-timer.o
tests/qemu-iotests/socket_scm_helper$(EXESUF):
tests/qemu-iotests/socket_scm_helper.o
tests/test-qemu-opts$(EXESUF): tests/test-qemu-opts.o libqemuutil.a
libqemustub.a
tests/test-write-threshold$(EXESUF): tests/test-write-threshold.o
$(block-obj-y) libqemuutil.a libqemustub.a
+tests/ivshmem-test$(EXESUF): tests/ivshmem-test.o
contrib/ivshmem-server/ivshmem-server.o $(libqos-pc-obj-y)
ifeq ($(CONFIG_POSIX),y)
LIBS += -lutil
diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c
new file mode 100644
index 0000000..03f44c1
--- /dev/null
+++ b/tests/ivshmem-test.c
@@ -0,0 +1,474 @@
+/*
+ * QTest testcase for ivshmem
+ *
+ * Copyright (c) 2015 Red Hat, Inc.
+ *
+ * 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 <errno.h>
+#include <fcntl.h>
+#include <glib.h>
+#include <glib/gstdio.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include "contrib/ivshmem-server/ivshmem-server.h"
+#include "libqos/pci-pc.h"
+#include "libqtest.h"
+#include "qemu/osdep.h"
+#include <stdlib.h>
+
+#if GLIB_CHECK_VERSION(2, 32, 0)
+#define HAVE_THREAD_NEW
+#endif
+
+#define TMPSHMSIZE (1 << 20)
+static char *tmpshm;
+static void *tmpshmem;
+static char *tmpdir;
+static char *tmpserver;
+
+static void save_fn(QPCIDevice *dev, int devfn, void *data)
+{
+ QPCIDevice **pdev = (QPCIDevice **) data;
+
+ *pdev = dev;
+}
+
+static QPCIDevice *get_device(void)
+{
+ QPCIDevice *dev;
+ QPCIBus *pcibus;
+
+ pcibus = qpci_init_pc();
+ qpci_device_foreach(pcibus, 0x1af4, 0x1110, save_fn, &dev);
+ g_assert(dev != NULL);
+
+ return dev;
+}
+
+typedef struct _IVState {
+ QTestState *qtest;
+ void *reg_base, *mem_base;
+ QPCIDevice *dev;
+} IVState;
+
+#define REG(name, len, val) \
+ static inline unsigned in_##name(IVState *s) \
+ { \
+ QTestState *qtest = global_qtest; \
+ unsigned res; \
+ global_qtest = s->qtest; \
+ res = qpci_io_read##len(s->dev, s->reg_base+(val)); \
+ g_test_message("*%s -> %x\n", #name, res); \
+ global_qtest = qtest; \
+ return res; \
+ } \
+ static inline void out_##name(IVState *s, unsigned v) \
+ { \
+ QTestState *qtest = global_qtest; \
+ global_qtest = s->qtest; \
+ g_test_message("%x -> *%s\n", v, #name); \
+ qpci_io_write##len(s->dev, s->reg_base+(val), v); \
+ global_qtest = qtest; \
+ }
+
+REG(IntrMask, l, 0)
+REG(IntrStatus, l, 4)
+REG(IVPosition, l, 8)
+REG(DoorBell, l, 12)
+
+#if 0
+static void info_qtree(void)
+{
+ QDict *response;
+
+ response = qmp("{'execute': 'human-monitor-command',"
+ " 'arguments': {"
+ " 'command-line': 'info qtree'"
+ "}}");
+ g_assert(response);
+ g_debug(qdict_get_try_str(response, "return"));
+ QDECREF(response);
+}
+#endif
+
+static void setup_vm_cmd(IVState *s, const char *cmd, bool msix)
+{
+ uint64_t barsize;
+
+ s->qtest = qtest_start(cmd);
+
+ s->dev = get_device();
+
+ /* FIXME: other bar order fails, mappings changes */
+ s->mem_base = qpci_iomap(s->dev, 2, &barsize);
+ g_assert_nonnull(s->mem_base);
+ g_assert_cmpuint(barsize, ==, TMPSHMSIZE);
+
+ if (msix) {
+ qpci_msix_enable(s->dev);
+ }
+
+ s->reg_base = qpci_iomap(s->dev, 0, &barsize);
+ g_assert_nonnull(s->reg_base);
+ g_assert_cmpuint(barsize, ==, 256);
+
+ qpci_device_enable(s->dev);
+}
+
+static void setup_vm(IVState *s)
+{
+ char *cmd = g_strdup_printf("-device ivshmem,shm=%s,size=1M", tmpshm);
+
+ setup_vm_cmd(s, cmd, false);
+
+ g_free(cmd);
+}
+
+static void test_ivshmem_single(void)
+{
+ IVState state, *s;
+ uint32_t data[1024];
+ int i;
+
+ setup_vm(&state);
+ s = &state;
+
+ /* valid io */
+ out_IntrMask(s, 0);
+ in_IntrStatus(s);
+ in_IVPosition(s);
+
+ out_IntrMask(s, 0xffffffff);
+ g_assert_cmpuint(in_IntrMask(s), ==, 0xffffffff);
+ out_IntrStatus(s, 1);
+ /* XXX: intercept IRQ, not seen in resp */
+ g_assert_cmpuint(in_IntrStatus(s), ==, 1);
+
+ /* invalid io */
+ out_IVPosition(s, 1);
+ out_DoorBell(s, 8 << 16);
+
+ for (i = 0; i < G_N_ELEMENTS(data); i++) {
+ data[i] = i;
+ }
+ qtest_memwrite(s->qtest, (uintptr_t)s->mem_base, data, sizeof(data));
+
+ for (i = 0; i < G_N_ELEMENTS(data); i++) {
+ g_assert_cmpuint(((uint32_t *)tmpshmem)[i], ==, i);
+ }
+
+ memset(data, 0, sizeof(data));
+
+ qtest_memread(s->qtest, (uintptr_t)s->mem_base, data, sizeof(data));
+ for (i = 0; i < G_N_ELEMENTS(data); i++) {
+ g_assert_cmpuint(data[i], ==, i);
+ }
+
+ qtest_quit(s->qtest);
+}
+
+static void test_ivshmem_pair(void)
+{
+ IVState state1, state2, *s1, *s2;
+ char *data;
+ int i;
+
+ setup_vm(&state1);
+ s1 = &state1;
+ setup_vm(&state2);
+ s2 = &state2;
+
+ data = g_malloc0(TMPSHMSIZE);
+
+ /* host write, guest 1 & 2 read */
+ memset(tmpshmem, 0x42, TMPSHMSIZE);
+ qtest_memread(s1->qtest, (uintptr_t)s1->mem_base, data, TMPSHMSIZE);
+ for (i = 0; i < TMPSHMSIZE; i++) {
+ g_assert_cmpuint(data[i], ==, 0x42);
+ }
+ qtest_memread(s2->qtest, (uintptr_t)s2->mem_base, data, TMPSHMSIZE);
+ for (i = 0; i < TMPSHMSIZE; i++) {
+ g_assert_cmpuint(data[i], ==, 0x42);
+ }
+
+ /* guest 1 write, guest 2 read */
+ memset(data, 0x43, TMPSHMSIZE);
+ qtest_memwrite(s1->qtest, (uintptr_t)s1->mem_base, data, TMPSHMSIZE);
+ memset(data, 0, TMPSHMSIZE);
+ qtest_memread(s2->qtest, (uintptr_t)s2->mem_base, data, TMPSHMSIZE);
+ for (i = 0; i < TMPSHMSIZE; i++) {
+ g_assert_cmpuint(data[i], ==, 0x43);
+ }
+
+ /* guest 2 write, guest 1 read */
+ memset(data, 0x44, TMPSHMSIZE);
+ qtest_memwrite(s2->qtest, (uintptr_t)s2->mem_base, data, TMPSHMSIZE);
+ memset(data, 0, TMPSHMSIZE);
+ qtest_memread(s1->qtest, (uintptr_t)s2->mem_base, data, TMPSHMSIZE);
+ for (i = 0; i < TMPSHMSIZE; i++) {
+ g_assert_cmpuint(data[i], ==, 0x44);
+ }
+
+ qtest_quit(s1->qtest);
+ qtest_quit(s2->qtest);
+ g_free(data);
+}
+
+typedef struct ServerThread {
+ GThread *thread;
+ IvshmemServer *server;
+ int pipe[2]; /* to handle quit */
+} ServerThread;
+
+static void *server_thread(void *data)
+{
+ ServerThread *t = data;
+ IvshmemServer *server = t->server;
+
+ while (true) {
+ fd_set fds;
+ int maxfd, ret;
+
+ FD_ZERO(&fds);
+ FD_SET(t->pipe[0], &fds);
+ maxfd = t->pipe[0] + 1;
+
+ ivshmem_server_get_fds(server, &fds, &maxfd);
+
+ ret = select(maxfd, &fds, NULL, NULL, NULL);
+
+ if (ret < 0) {
+ if (errno == EINTR) {
+ continue;
+ }
+
+ g_critical("select error: %s\n", strerror(errno));
+ break;
+ }
+ if (ret == 0) {
+ continue;
+ }
+
+ if (FD_ISSET(t->pipe[0], &fds)) {
+ break;
+ }
+
+ if (ivshmem_server_handle_fds(server, &fds, maxfd) < 0) {
+ g_critical("ivshmem_server_handle_fds() failed\n");
+ break;
+ }
+ }
+
+ return NULL;
+}
+
+static void setup_vm_with_server(IVState *s, int nvectors)
+{
+ char *cmd = g_strdup_printf("-chardev socket,id=chr0,path=%s,nowait "
+ "-device
ivshmem,size=1M,chardev=chr0,vectors=%d",
+ tmpserver, nvectors);
+
+ setup_vm_cmd(s, cmd, true);
+
+ g_free(cmd);
+}
+
+static GThread *thread_new(const gchar *name, GThreadFunc func, gpointer data)
+{
+ GThread *thread = NULL;
+ GError *error = NULL;
+#ifdef HAVE_THREAD_NEW
+ thread = g_thread_try_new(name, func, data, &error);
+#else
+ thread = g_thread_create(func, data, TRUE, &error);
+#endif
+ g_assert_no_error(error);
+ return thread;
+}
+
+static void test_ivshmem_server(void)
+{
+ IVState state1, state2, *s1, *s2;
+ ServerThread thread;
+ IvshmemServer server;
+ int ret, vm1, vm2;
+ int nvectors = 2;
+
+ memset(tmpshmem, 0x42, TMPSHMSIZE);
+ ret = ivshmem_server_init(&server, tmpserver, tmpshm,
+ TMPSHMSIZE, nvectors,
+ getenv("QTEST_LOG") != NULL);
+ g_assert_cmpint(ret, ==, 0);
+
+ ret = ivshmem_server_start(&server);
+ g_assert_cmpint(ret, ==, 0);
+
+ setup_vm_with_server(&state1, nvectors);
+ s1 = &state1;
+ setup_vm_with_server(&state2, nvectors);
+ s2 = &state2;
+
+ g_assert_cmpuint(in_IVPosition(s1), ==, 0xffffffff);
+ g_assert_cmpuint(in_IVPosition(s2), ==, 0xffffffff);
+
+ g_assert_cmpuint(qtest_readb(s1->qtest, (uintptr_t)s1->mem_base), ==,
0x00);
+
+ thread.server = &server;
+ ret = pipe(thread.pipe);
+ g_assert_cmpint(ret, ==, 0);
+ thread.thread = thread_new("ivshmem-server", server_thread, &thread);
+
+ /* waiting until mapping is done */
+ while (true) {
+ g_usleep(1000);
+
+ if (qtest_readb(s1->qtest, (uintptr_t)s1->mem_base) == 0x42 &&
+ qtest_readb(s2->qtest, (uintptr_t)s2->mem_base) == 0x42) {
+ break;
+ }
+ }
+
+ /* check got different VM ids */
+ vm1 = in_IVPosition(s1);
+ vm2 = in_IVPosition(s2);
+ g_assert_cmpuint(vm1, !=, vm2);
+
+ global_qtest = s1->qtest;
+ ret = qpci_msix_table_size(s1->dev);
+ g_assert_cmpuint(ret, ==, nvectors);
+
+ /* ping vm2 -> vm1 */
+ ret = qpci_msix_pending(s1->dev, 0);
+ g_assert_cmpuint(ret, ==, 0);
+ out_DoorBell(s2, vm1 << 16);
+ g_usleep(10000);
+ ret = qpci_msix_pending(s1->dev, 0);
+ g_assert_cmpuint(ret, !=, 0);
+
+ /* ping vm1 -> vm2 */
+ global_qtest = s2->qtest;
+ ret = qpci_msix_pending(s2->dev, 0);
+ g_assert_cmpuint(ret, ==, 0);
+ out_DoorBell(s1, vm2 << 16);
+ g_usleep(10000);
+ ret = qpci_msix_pending(s2->dev, 0);
+ g_assert_cmpuint(ret, !=, 0);
+
+ /* remove vm2 */
+ qtest_quit(s2->qtest);
+ /* XXX wait enough time for vm1 to be notified */
+ g_usleep(1000);
+
+ qtest_quit(s1->qtest);
+
+ write(thread.pipe[1], "q", 1);
+ g_thread_join(thread.thread);
+
+ ivshmem_server_close(&server);
+ close(thread.pipe[1]);
+ close(thread.pipe[0]);
+}
+
+#define PCI_SLOT_HP 0x06
+
+static void test_ivshmem_hotplug(void)
+{
+ gchar *opts;
+
+ qtest_start("");
+
+ opts = g_strdup_printf("'shm': '%s', 'size': '1M'", tmpshm);
+
+ qpci_plug_device_test("ivshmem", "iv1", PCI_SLOT_HP, opts);
+ qpci_unplug_acpi_device_test("iv1", PCI_SLOT_HP);
+
+ qtest_end();
+ g_free(opts);
+}
+
+static void cleanup(void)
+{
+ if (tmpshmem) {
+ munmap(tmpshmem, TMPSHMSIZE);
+ tmpshmem = NULL;
+ }
+
+ if (tmpshm) {
+ shm_unlink(tmpshm);
+ g_free(tmpshm);
+ tmpshm = NULL;
+ }
+
+ if (tmpserver) {
+ g_unlink(tmpserver);
+ g_free(tmpserver);
+ tmpserver = NULL;
+ }
+
+ if (tmpdir) {
+ g_rmdir(tmpdir);
+ tmpdir = NULL;
+ }
+}
+
+static void abrt_handler(void *data)
+{
+ cleanup();
+}
+
+static gchar *mktempshm(int size, int *fd)
+{
+ while (true) {
+ gchar *name;
+
+ name = g_strdup_printf("/qtest-%u-%u", getpid(), g_random_int());
+ *fd = shm_open(name, O_CREAT|O_RDWR|O_EXCL,
+ S_IRWXU|S_IRWXG|S_IRWXO);
+ if (*fd > 0) {
+ g_assert(ftruncate(*fd, size) == 0);
+ return name;
+ }
+
+ g_free(name);
+ }
+}
+
+int main(int argc, char **argv)
+{
+ int ret, fd;
+ static gchar dir[] = "/tmp/ivshmem-test.XXXXXX";
+
+#if !GLIB_CHECK_VERSION(2, 31, 0)
+ if (!g_thread_supported()) {
+ g_thread_init(NULL);
+ }
+#endif
+
+ g_test_init(&argc, &argv, NULL);
+
+ qtest_add_abrt_handler(abrt_handler, NULL);
+ /* shm */
+ tmpshm = mktempshm(TMPSHMSIZE, &fd);
+ tmpshmem = mmap(0, TMPSHMSIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
+ g_assert(tmpshmem != MAP_FAILED);
+ /* server */
+ if (g_mkdtemp_full(dir, 0700) == NULL) {
+ g_error("g_mkdtemp_full: %s", g_strerror(errno));
+ }
+ tmpdir = dir;
+ tmpserver = g_strconcat(tmpdir, "/server", NULL);
+
+ qtest_add_func("/ivshmem/single", test_ivshmem_single);
+ qtest_add_func("/ivshmem/pair", test_ivshmem_pair);
+ qtest_add_func("/ivshmem/server", test_ivshmem_server);
+ qtest_add_func("/ivshmem/hotplug", test_ivshmem_hotplug);
+
+ ret = g_test_run();
+
+ cleanup();
+ return ret;
+}
--
2.4.3
