Re: [PATCH v4 6/7] tests/qtest/vhost-user-test: add migrate_reconnect test

[Raphael Norwitz <raphael.s.norwitz@gmail.com>]

On Fri, Sep 4, 2020 at 5:36 AM Dima Stepanov <dimastep@yandex-team.ru> wrote:
>
> Add new migrate_reconnect test for the vhost-user-blk device. Perform a
> disconnect after sending response for the VHOST_USER_SET_LOG_BASE
> command.
>
> Signed-off-by: Dima Stepanov <dimastep@yandex-team.ru>

Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>


> ---
>  tests/qtest/vhost-user-test.c | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
>
> diff --git a/tests/qtest/vhost-user-test.c b/tests/qtest/vhost-user-test.c
> index a8af613..4b715d3 100644
> --- a/tests/qtest/vhost-user-test.c
> +++ b/tests/qtest/vhost-user-test.c
> @@ -146,6 +146,7 @@ static VhostUserMsg m __attribute__ ((unused));
>  enum {
>      TEST_FLAGS_OK,
>      TEST_FLAGS_DISCONNECT,
> +    TEST_FLAGS_MIGRATE_DISCONNECT,
>      TEST_FLAGS_BAD,
>      TEST_FLAGS_END,
>  };
> @@ -436,6 +437,15 @@ static void chr_read(void *opaque, const uint8_t *buf, int size)
>          qemu_chr_fe_write_all(chr, p, VHOST_USER_HDR_SIZE);
>
>          g_cond_broadcast(&s->data_cond);
> +        /*
> +         * Perform disconnect after sending a response. In this
> +         * case the next write command on the QEMU side (for now
> +         * it is SET_FEATURES will return -1, because of disconnect.
> +         */
> +        if (s->test_flags == TEST_FLAGS_MIGRATE_DISCONNECT) {
> +            qemu_chr_fe_disconnect(chr);
> +            s->test_flags = TEST_FLAGS_BAD;
> +        }
>          break;
>
>      case VHOST_USER_SET_VRING_BASE:
> @@ -737,6 +747,17 @@ static void *vhost_user_test_setup_memfd(GString *cmd_line, void *arg)
>      return server;
>  }
>
> +static void *vhost_user_test_setup_migrate_reconnect(GString *cmd_line,
> +        void *arg)
> +{
> +    TestServer *server;
> +
> +    server = vhost_user_test_setup_memfd(cmd_line, arg);
> +    server->test_flags = TEST_FLAGS_MIGRATE_DISCONNECT;
> +
> +    return server;
> +}
> +
>  static void test_read_guest_mem(void *obj, void *arg, QGuestAllocator *alloc)
>  {
>      TestServer *server = arg;
> @@ -1150,5 +1171,9 @@ static void register_vhost_user_test(void)
>      opts.before = vhost_user_test_setup_memfd;
>      qos_add_test("migrate", "vhost-user-blk",
>                   test_migrate, &opts);
> +
> +    opts.before = vhost_user_test_setup_migrate_reconnect;
> +    qos_add_test("migrate_reconnect", "vhost-user-blk",
> +                 test_migrate, &opts);
>  }
>  libqos_init(register_vhost_user_test);
> --
> 2.7.4
>
>