On 6/26/25 10:47, Daniel P. Berrangé via Devel wrote:
> From: Daniel P. Berrangé <[email protected]>
>
> The USB vendor/product is usually translated into a device/bus at
> startup using the hostdev logic. We don't run the latter in the
> unit test suite, but we can fake it by hardcoding a translation.
> This demonstrates that we format the command line with the normal
> device/bus properties, even when vendor/product is set.
>
> Signed-off-by: Daniel P. Berrangé <[email protected]>
> ---
> ...tdev-usb-vendor-product.x86_64-latest.args | 35 +++++++++++++++
> ...stdev-usb-vendor-product.x86_64-latest.xml | 44 +++++++++++++++++++
> .../hostdev-usb-vendor-product.xml | 36 +++++++++++++++
> tests/qemuxmlconftest.c | 18 ++++++++
> 4 files changed, 133 insertions(+)
> create mode 100644
> tests/qemuxmlconfdata/hostdev-usb-vendor-product.x86_64-latest.args
> create mode 100644
> tests/qemuxmlconfdata/hostdev-usb-vendor-product.x86_64-latest.xml
> create mode 100644 tests/qemuxmlconfdata/hostdev-usb-vendor-product.xml
>
Kudos for these test XMLs, but ...
> diff --git a/tests/qemuxmlconftest.c b/tests/qemuxmlconftest.c
> index f74bd2bb7a..fe90f029d9 100644
> --- a/tests/qemuxmlconftest.c
> +++ b/tests/qemuxmlconftest.c
> @@ -474,6 +474,23 @@ testCompareXMLToArgvCreateArgs(virQEMUDriver *drv,
> }
> }
>
> + for (i = 0; i < vm->def->nhostdevs; i++) {
> + virDomainHostdevDef *hostdev = vm->def->hostdevs[i];
> +
> + if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
> + hostdev->source.subsys.type ==
> VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB) {
> + virDomainHostdevSubsysUSB *usb = &hostdev->source.subsys.u.usb;
> + if (!usb->device && !usb->bus) {
> + if (usb->vendor == 0x1234 && usb->product == 0x4321) {
> + usb->bus = 42;
> + usb->device = 0x1234;
> + } else {
> + g_assert_not_reached();
> + }
> + }
> + }
> + }
> +
.. for this I think we can do a bit better. We already have virusbmock
which would handle looking up USB devices in our fake USBSYS structure
(tests/virusbtestdata/). But for that we would need slightly more code,
so lets merge this and I'll post patches that use mocking.
BTW: if anybody will want to try that on their own, they'll need the
following patch to make chaining of our mocks actually work:
https://lists.libvirt.org/archives/list/[email protected]/message/BTFEENLIPAUH2DFE2GZMWNAT6LOWADH6/
> if (flags & FLAG_SLIRP_HELPER) {
> for (i = 0; i < vm->def->nnets; i++) {
> virDomainNetDef *net = vm->def->nets[i];
> @@ -2118,6 +2135,7 @@ mymain(void)
> DO_TEST_CAPS_LATEST("hostdev-usb-address-device");
> DO_TEST_CAPS_LATEST("hostdev-usb-address-device-boot");
> DO_TEST_CAPS_LATEST_PARSE_ERROR("hostdev-usb-duplicate");
> + DO_TEST_CAPS_LATEST("hostdev-usb-vendor-product");
> DO_TEST_CAPS_LATEST("hostdev-pci-address");
> DO_TEST_CAPS_LATEST("hostdev-pci-address-device");
> DO_TEST_CAPS_LATEST_PARSE_ERROR("hostdev-pci-duplicate");
Reviewed-by: Michal Privoznik <[email protected]>
Michal
