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SubjectRe: [PATCH v2 3/4] nitro_enclaves: add test framework for the misc functionality
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On 21/09/2021 18:10, Longpeng(Mike) wrote:
> Add test framework for the misc functionality.

Let's add more specifics here.

nitro_enclaves: Add KUnit tests setup for the misc device functionality

Add the initial setup for the KUnit tests that will target the Nitro
Enclaves misc device functionality.

>
> Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
> ---
> drivers/virt/nitro_enclaves/Kconfig | 8 ++++++++
> drivers/virt/nitro_enclaves/ne_misc_dev.c | 27 +++++++++++++++++++++++++++
> drivers/virt/nitro_enclaves/ne_misc_test.c | 17 +++++++++++++++++
> 3 files changed, 52 insertions(+)
> create mode 100644 drivers/virt/nitro_enclaves/ne_misc_test.c

Please modify in all places where necessary to mention Nitro Enclaves
"misc device", instead of just "misc", to be more specific.

For example, here can be "ne_misc_dev_test.c".

>
> diff --git a/drivers/virt/nitro_enclaves/Kconfig b/drivers/virt/nitro_enclaves/Kconfig
> index 8c9387a..24c54da 100644
> --- a/drivers/virt/nitro_enclaves/Kconfig
> +++ b/drivers/virt/nitro_enclaves/Kconfig
> @@ -18,3 +18,11 @@ config NITRO_ENCLAVES
>
> To compile this driver as a module, choose M here.
> The module will be called nitro_enclaves.
> +
> +config NITRO_ENCLAVES_MISC_TEST

NITRO_ENCLAVES_MISC_DEV_TEST

> + bool "Tests for the misc functionality of Nitro enclaves"

misc device functionality of the Nitro Enclaves

> + depends on NITRO_ENCLAVES && KUNIT=y
> + help
> + Enable KUnit tests for the misc functionality of Nitro Enclaves. Select

misc device functionality of the Nitro Enclaves

> + this option only if you will boot the kernel for the purpose of running
> + unit tests (e.g. under UML or qemu). If unsure, say N.
> diff --git a/drivers/virt/nitro_enclaves/ne_misc_dev.c b/drivers/virt/nitro_enclaves/ne_misc_dev.c
> index d551b88..0131e1b 100644
> --- a/drivers/virt/nitro_enclaves/ne_misc_dev.c
> +++ b/drivers/virt/nitro_enclaves/ne_misc_dev.c
> @@ -1735,8 +1735,33 @@ static long ne_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> return 0;
> }
>
> +#if defined(CONFIG_NITRO_ENCLAVES_MISC_TEST)
> +#include "ne_misc_test.c"
> +
> +static inline int ne_misc_test_init(void)
> +{
> + return __kunit_test_suites_init(ne_misc_test_suites);
> +}
> +
> +static inline void ne_misc_test_exit(void)
> +{
> + __kunit_test_suites_exit(ne_misc_test_suites);
> +}
> +#else
> +static inline int ne_misc_test_init(void)
> +{
> + return 0;
> +}
> +
> +static inline void ne_misc_test_exit(void)
> +{
> +}
> +#endif

s/misc/misc_dev/g

Why are these needed? Can't the test suite be setup using
"kunit_test_suite" as in the KUnit documentation example [1]?

Wouldn't be necessary to conditionally compile the ne_misc_dev_test,
based on the kernel config above?

[1]
https://www.kernel.org/doc/html/latest/dev-tools/kunit/start.html#writing-your-first-test

> +
> static int __init ne_init(void)
> {
> + ne_misc_test_init();
> +
> mutex_init(&ne_cpu_pool.mutex);
>
> return pci_register_driver(&ne_pci_driver);
> @@ -1747,6 +1772,8 @@ static void __exit ne_exit(void)
> pci_unregister_driver(&ne_pci_driver);
>
> ne_teardown_cpu_pool();
> +
> + ne_misc_test_exit();
> }
>
> module_init(ne_init);
> diff --git a/drivers/virt/nitro_enclaves/ne_misc_test.c b/drivers/virt/nitro_enclaves/ne_misc_test.c
> new file mode 100644
> index 0000000..3426c35
> --- /dev/null
> +++ b/drivers/virt/nitro_enclaves/ne_misc_test.c
> @@ -0,0 +1,17 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +
> +#include <kunit/test.h>
> +
> +static struct kunit_case ne_misc_test_cases[] = {
> + {}
> +};
> +
> +static struct kunit_suite ne_misc_test_suite = {
> + .name = "ne_misc_test",
> + .test_cases = ne_misc_test_cases,
> +};
> +
> +static struct kunit_suite *ne_misc_test_suites[] = {
> + &ne_misc_test_suite,
> + NULL
> +};
>

Can replace "ne_misc" with "ne_misc_dev".

Thanks,
Andra



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