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tests/qtest/vhost-user-test: prepare the tests for adding new dev class 

For now only vhost-user-net device is supported by the test. Other
vhost-user devices are not tested. As a first step make source code
refactoring so new devices can reuse the same test routines. To make
this provide a new vhost_user_ops structure with the methods to
initialize device, its command line or make a proper vhost-user
responses.

Signed-off-by: Dima Stepanov <dimastep@yandex-team.ru>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Message-Id: <a48b60fb96fef230b75fff72a2d77040dcb5ef7c.1599813294.git.dimastep@yandex-team.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Dima Stepanov 2020-09-11 11:39:45 +03:00 committed by Michael S. Tsirkin
parent 1e5a050f57
commit 892040dc8b
1 changed files with 76 additions and 29 deletions
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105
tests/qtest/vhost-user-test.c
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@ -135,6 +135,10 @@ enum {
TEST_FLAGS_END,
};
enum {
VHOST_USER_NET,
};
typedef struct TestServer {
gchar *socket_path;
gchar *mig_path;
@ -154,10 +158,25 @@ typedef struct TestServer {
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. */
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);
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);
@ -167,7 +186,7 @@ enum test_memfd {
TEST_MEMFD_NO,
};
static void append_vhost_opts(TestServer *s, GString *cmd_line,
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,
@ -332,25 +351,15 @@ static void chr_read(void *opaque, const uint8_t *buf, int size)
break;
case VHOST_USER_SET_FEATURES:
g_assert_cmpint(msg.payload.u64 & (0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES),
!=, 0ULL);
if (s->test_flags == TEST_FLAGS_DISCONNECT) {
qemu_chr_fe_disconnect(chr);
s->test_flags = TEST_FLAGS_BAD;
if (s->vu_ops->set_features) {
s->vu_ops->set_features(s, chr, &msg);
}
break;
case VHOST_USER_GET_PROTOCOL_FEATURES:
/* 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;
if (s->vu_ops->get_protocol_features) {
s->vu_ops->get_protocol_features(s, chr, &msg);
}
p = (uint8_t *) &msg;
qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE + msg.size);
break;
case VHOST_USER_GET_VRING_BASE:
@ -467,7 +476,8 @@ static const char *init_hugepagefs(void)
#endif
}
static TestServer *test_server_new(const gchar *name)
static TestServer *test_server_new(const gchar *name,
struct vhost_user_ops *ops)
{
TestServer *server = g_new0(TestServer, 1);
char template[] = "/tmp/vhost-test-XXXXXX";
@ -495,6 +505,7 @@ static TestServer *test_server_new(const gchar *name)
server->log_fd = -1;
server->queues = 1;
server->vu_ops = ops;
return server;
}
@ -669,11 +680,11 @@ static void vhost_user_test_cleanup(void *s)
static void *vhost_user_test_setup(GString *cmd_line, void *arg)
{
TestServer *server = test_server_new("vhost-user-test");
TestServer *server = test_server_new("vhost-user-test", arg);
test_server_listen(server);
append_mem_opts(server, cmd_line, 256, TEST_MEMFD_AUTO);
append_vhost_opts(server, cmd_line, "");
server->vu_ops->append_opts(server, cmd_line, "");
g_test_queue_destroy(vhost_user_test_cleanup, server);
@ -682,11 +693,11 @@ static void *vhost_user_test_setup(GString *cmd_line, void *arg)
static void *vhost_user_test_setup_memfd(GString *cmd_line, void *arg)
{
TestServer *server = test_server_new("vhost-user-test");
TestServer *server = test_server_new("vhost-user-test", arg);
test_server_listen(server);
append_mem_opts(server, cmd_line, 256, TEST_MEMFD_YES);
append_vhost_opts(server, cmd_line, "");
server->vu_ops->append_opts(server, cmd_line, "");
g_test_queue_destroy(vhost_user_test_cleanup, server);
@ -720,7 +731,7 @@ static void test_migrate(void *obj, void *arg, QGuestAllocator *alloc)
return;
}
dest = test_server_new("dest");
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);
@ -730,7 +741,7 @@ static void test_migrate(void *obj, void *arg, QGuestAllocator *alloc)
test_server_listen(dest);
g_string_append_printf(dest_cmdline, " -incoming %s", uri);
append_mem_opts(dest, dest_cmdline, 256, TEST_MEMFD_AUTO);
append_vhost_opts(dest, dest_cmdline, "");
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
@ -831,11 +842,11 @@ connect_thread(gpointer data)
static void *vhost_user_test_setup_reconnect(GString *cmd_line, void *arg)
{
TestServer *s = test_server_new("reconnect");
TestServer *s = test_server_new("reconnect", arg);
g_thread_new("connect", connect_thread, s);
append_mem_opts(s, cmd_line, 256, TEST_MEMFD_AUTO);
append_vhost_opts(s, cmd_line, ",server");
s->vu_ops->append_opts(s, cmd_line, ",server");
g_test_queue_destroy(vhost_user_test_cleanup, s);
@ -866,13 +877,13 @@ static void test_reconnect(void *obj, void *arg, QGuestAllocator *alloc)
static void *vhost_user_test_setup_connect_fail(GString *cmd_line, void *arg)
{
TestServer *s = test_server_new("connect-fail");
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);
append_vhost_opts(s, cmd_line, ",server");
s->vu_ops->append_opts(s, cmd_line, ",server");
g_test_queue_destroy(vhost_user_test_cleanup, s);
@ -881,13 +892,13 @@ static void *vhost_user_test_setup_connect_fail(GString *cmd_line, void *arg)
static void *vhost_user_test_setup_flags_mismatch(GString *cmd_line, void *arg)
{
TestServer *s = test_server_new("flags-mismatch");
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);
append_vhost_opts(s, cmd_line, ",server");
s->vu_ops->append_opts(s, cmd_line, ",server");
g_test_queue_destroy(vhost_user_test_cleanup, s);
@ -924,11 +935,47 @@ static void test_multiqueue(void *obj, void *arg, QGuestAllocator *alloc)
wait_for_rings_started(s, s->queues * 2);
}
static void vu_net_set_features(TestServer *s, CharBackend *chr,
VhostUserMsg *msg)
{
g_assert_cmpint(msg->payload.u64 &
(0x1ULL << VHOST_USER_F_PROTOCOL_FEATURES), !=, 0ULL);
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,
.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);