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iommufd/selftest: Add IOMMU_VDEVICE_ALLOC test coverage

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Add a vdevice_alloc op to the viommu mock_viommu_ops for the coverage of
IOMMU_VIOMMU_TYPE_SELFTEST allocations. Then, add a vdevice_alloc TEST_F
to cover the IOMMU_VDEVICE_ALLOC ioctl.

Link: https://patch.msgid.link/r/4b9607e5b86726c8baa7b89bd48123fb44104a23.1730836308.git.nicolinc@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Nicolin Chen
2024-11-05 12:05:10 -08:00
committed by Jason Gunthorpe
parent 0ce5c2477a
commit 5778c75703
3 changed files with 51 additions and 0 deletions
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20
tools/testing/selftests/iommu/iommufd.c
View File

@@ -134,6 +134,7 @@ TEST_F(iommufd, cmd_length)
TEST_LENGTH(iommu_vfio_ioas, IOMMU_VFIO_IOAS, __reserved);
TEST_LENGTH(iommu_ioas_map_file, IOMMU_IOAS_MAP_FILE, iova);
TEST_LENGTH(iommu_viommu_alloc, IOMMU_VIOMMU_ALLOC, out_viommu_id);
TEST_LENGTH(iommu_vdevice_alloc, IOMMU_VDEVICE_ALLOC, virt_id);
#undef TEST_LENGTH
}
@@ -2617,4 +2618,23 @@ TEST_F(iommufd_viommu, viommu_alloc_nested_iopf)
}
}
TEST_F(iommufd_viommu, vdevice_alloc)
{
uint32_t viommu_id = self->viommu_id;
uint32_t dev_id = self->device_id;
uint32_t vdev_id = 0;
if (dev_id) {
/* Set vdev_id to 0x99, unset it, and set to 0x88 */
test_cmd_vdevice_alloc(viommu_id, dev_id, 0x99, &vdev_id);
test_err_vdevice_alloc(EEXIST, viommu_id, dev_id, 0x99,
&vdev_id);
test_ioctl_destroy(vdev_id);
test_cmd_vdevice_alloc(viommu_id, dev_id, 0x88, &vdev_id);
test_ioctl_destroy(vdev_id);
} else {
test_err_vdevice_alloc(ENOENT, viommu_id, dev_id, 0x99, NULL);
}
}
TEST_HARNESS_MAIN

4
tools/testing/selftests/iommu/iommufd_fail_nth.c
View File

@@ -622,6 +622,7 @@ TEST_FAIL_NTH(basic_fail_nth, device)
uint32_t idev_id;
uint32_t hwpt_id;
uint32_t viommu_id;
uint32_t vdev_id;
__u64 iova;
self->fd = open("/dev/iommu", O_RDWR);
@@ -674,6 +675,9 @@ TEST_FAIL_NTH(basic_fail_nth, device)
IOMMU_VIOMMU_TYPE_SELFTEST, 0, &viommu_id))
return -1;
if (_test_cmd_vdevice_alloc(self->fd, viommu_id, idev_id, 0, &vdev_id))
return -1;
return 0;
}

27
tools/testing/selftests/iommu/iommufd_utils.h
View File

@@ -847,3 +847,30 @@ static int _test_cmd_viommu_alloc(int fd, __u32 device_id, __u32 hwpt_id,
EXPECT_ERRNO(_errno, \
_test_cmd_viommu_alloc(self->fd, device_id, hwpt_id, \
type, 0, viommu_id))
static int _test_cmd_vdevice_alloc(int fd, __u32 viommu_id, __u32 idev_id,
__u64 virt_id, __u32 *vdev_id)
{
struct iommu_vdevice_alloc cmd = {
.size = sizeof(cmd),
.dev_id = idev_id,
.viommu_id = viommu_id,
.virt_id = virt_id,
};
int ret;
ret = ioctl(fd, IOMMU_VDEVICE_ALLOC, &cmd);
if (ret)
return ret;
if (vdev_id)
*vdev_id = cmd.out_vdevice_id;
return 0;
}
#define test_cmd_vdevice_alloc(viommu_id, idev_id, virt_id, vdev_id) \
ASSERT_EQ(0, _test_cmd_vdevice_alloc(self->fd, viommu_id, idev_id, \
virt_id, vdev_id))
#define test_err_vdevice_alloc(_errno, viommu_id, idev_id, virt_id, vdev_id) \
EXPECT_ERRNO(_errno, \
_test_cmd_vdevice_alloc(self->fd, viommu_id, idev_id, \
virt_id, vdev_id))