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Message-ID: <b25e34336321d1e314c9f9034902fbed16de375b.1730313494.git.nicolinc@nvidia.com>
Date: Wed, 30 Oct 2024 14:35:28 -0700
From: Nicolin Chen <nicolinc@...dia.com>
To: <jgg@...dia.com>, <kevin.tian@...el.com>, <corbet@....net>
CC: <joro@...tes.org>, <suravee.suthikulpanit@....com>, <will@...nel.org>,
<robin.murphy@....com>, <dwmw2@...radead.org>, <shuah@...nel.org>,
<iommu@...ts.linux.dev>, <linux-doc@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
<baolu.lu@...ux.intel.com>, <eric.auger@...hat.com>,
<jean-philippe@...aro.org>, <mdf@...nel.org>, <mshavit@...gle.com>,
<shameerali.kolothum.thodi@...wei.com>, <smostafa@...gle.com>,
<yi.l.liu@...el.com>, <aik@....com>, <zhangfei.gao@...aro.org>,
<patches@...ts.linux.dev>
Subject: [PATCH v6 02/10] iommufd/selftest: Add IOMMU_VDEVICE_ALLOC test coverage
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.
Reviewed-by: Kevin Tian <kevin.tian@...el.com>
Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
---
tools/testing/selftests/iommu/iommufd_utils.h | 27 +++++++++++++++++++
tools/testing/selftests/iommu/iommufd.c | 20 ++++++++++++++
.../selftests/iommu/iommufd_fail_nth.c | 4 +++
3 files changed, 51 insertions(+)
diff --git a/tools/testing/selftests/iommu/iommufd_utils.h b/tools/testing/selftests/iommu/iommufd_utils.h
index 7dabc261fae2..7fe905924d72 100644
--- a/tools/testing/selftests/iommu/iommufd_utils.h
+++ b/tools/testing/selftests/iommu/iommufd_utils.h
@@ -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))
diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c
index 3142819cc26d..2610117cb39e 100644
--- a/tools/testing/selftests/iommu/iommufd.c
+++ b/tools/testing/selftests/iommu/iommufd.c
@@ -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
}
@@ -2608,4 +2609,23 @@ 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
diff --git a/tools/testing/selftests/iommu/iommufd_fail_nth.c b/tools/testing/selftests/iommu/iommufd_fail_nth.c
index fb618485d7ca..22f6fd5f0f74 100644
--- a/tools/testing/selftests/iommu/iommufd_fail_nth.c
+++ b/tools/testing/selftests/iommu/iommufd_fail_nth.c
@@ -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;
}
--
2.43.0
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