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iommufd/selftest: Test iommufd_device_replace()

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Allow the selftest to call the function on the mock idev, add some tests
to exercise it.

Link: https://lore.kernel.org/r/16-v8-6659224517ea+532-iommufd_alloc_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Nicolin Chen
2023-07-17 15:12:12 -03:00
committed by Jason Gunthorpe
parent 83f7bc6fdf
commit fa1ffdb9e2
6 changed files with 149 additions and 4 deletions
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30
tools/testing/selftests/iommu/iommufd_utils.h
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@@ -19,6 +19,8 @@
static void *buffer;
static unsigned long BUFFER_SIZE;
static unsigned long PAGE_SIZE;
/*
* Have the kernel check the refcount on pages. I don't know why a freshly
* mmap'd anon non-compound page starts out with a ref of 3
@@ -66,6 +68,34 @@ static int _test_cmd_mock_domain(int fd, unsigned int ioas_id, __u32 *stdev_id,
EXPECT_ERRNO(_errno, _test_cmd_mock_domain(self->fd, ioas_id, \
stdev_id, hwpt_id))
static int _test_cmd_mock_domain_replace(int fd, __u32 stdev_id, __u32 pt_id,
__u32 *hwpt_id)
{
struct iommu_test_cmd cmd = {
.size = sizeof(cmd),
.op = IOMMU_TEST_OP_MOCK_DOMAIN_REPLACE,
.id = stdev_id,
.mock_domain_replace = {
.pt_id = pt_id,
},
};
int ret;
ret = ioctl(fd, IOMMU_TEST_CMD, &cmd);
if (ret)
return ret;
if (hwpt_id)
*hwpt_id = cmd.mock_domain_replace.pt_id;
return 0;
}
#define test_cmd_mock_domain_replace(stdev_id, pt_id) \
ASSERT_EQ(0, _test_cmd_mock_domain_replace(self->fd, stdev_id, pt_id, \
NULL))
#define test_err_mock_domain_replace(_errno, stdev_id, pt_id) \
EXPECT_ERRNO(_errno, _test_cmd_mock_domain_replace(self->fd, stdev_id, \
pt_id, NULL))
static int _test_cmd_create_access(int fd, unsigned int ioas_id,
__u32 *access_id, unsigned int flags)
{