Re: [libvirt] [PATCHv4 6/9] Reserve existing USB addresses

Check if they fit on the USB controllers the domain has, and error out if two devices try to use the same address. --- src/conf/domain_addr.c | 42 ++++++++++++++++++++++ src/conf/domain_addr.h | 4 +++ src/libvirt_private.syms | 1 + src/qemu/qemu_domain.h | 1 + src/qemu/qemu_domain_address.c | 38 +++++++++++++++++++- .../qemuxml2argv-usb-hub-conflict.xml | 22 ++++++++++++ tests/qemuxml2argvtest.c | 3 ++ 7 files changed, 110 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-usb-hub-conflict.xml diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c index 2c511ba..bc9dc59 100644 --- a/src/conf/domain_addr.c +++ b/src/conf/domain_addr.c @@ -1566,3 +1566,45 @@ int virDomainUSBAddressSetAddControllers(virDomainUSBAddressSetPtr addrs, } return 0; } + + +int +virDomainUSBAddressReserve(virDomainDeviceInfoPtr info, + void *data) +{ + virDomainUSBAddressSetPtr addrs = data; + virDomainUSBAddressHubPtr targetHub = NULL; + char *portStr = NULL; + int ret = -1; + int targetPort; + + if (info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB) + return 0; + + if (!virDomainUSBAddressPortIsValid(info->addr.usb.port)) + return 0; + + portStr = virDomainUSBAddressPortFormat(info->addr.usb.port); + if (!portStr) + goto cleanup; + VIR_DEBUG("Reserving USB address bus=%u port=%s", info->addr.usb.bus, portStr); + + if (!(targetHub = virDomainUSBAddressFindPort(addrs, info, &targetPort, + portStr))) + goto cleanup; + + if (virBitmapIsBitSet(targetHub->ports, targetPort)) {

+ virReportError(VIR_ERR_XML_ERROR, + _("Duplicate USB address bus %u port %s"), + info->addr.usb.bus, portStr); + goto cleanup; + } + + ignore_value(virBitmapSetBit(targetHub->ports, targetPort)); + + ret = 0; + + cleanup: + VIR_FREE(portStr); + return ret; +} diff --git a/src/conf/domain_addr.h b/src/conf/domain_addr.h index 4cb0212..4230ea2 100644 --- a/src/conf/domain_addr.h +++ b/src/conf/domain_addr.h @@ -275,4 +275,8 @@ int virDomainUSBAddressSetAddControllers(virDomainUSBAddressSetPtr addrs, ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2); void virDomainUSBAddressSetFree(virDomainUSBAddressSetPtr addrs); +int +virDomainUSBAddressReserve(virDomainDeviceInfoPtr info, + void *data) + ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);

#endif /* __DOMAIN_ADDR_H__ */ diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index f0fed8e..f66ccf5 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -110,6 +110,7 @@ virDomainPCIControllerModelToConnectType; virDomainUSBAddressPortFormat; virDomainUSBAddressPortFormatBuf; virDomainUSBAddressPortIsValid; +virDomainUSBAddressReserve; virDomainUSBAddressSetAddControllers; virDomainUSBAddressSetCreate; virDomainUSBAddressSetFree; diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h index c87dcc7..b71a28d 100644 --- a/src/qemu/qemu_domain.h +++ b/src/qemu/qemu_domain.h @@ -190,6 +190,7 @@ struct _qemuDomainObjPrivate { virDomainPCIAddressSetPtr pciaddrs; virDomainCCWAddressSetPtr ccwaddrs; virDomainVirtioSerialAddrSetPtr vioserialaddrs; + virDomainUSBAddressSetPtr usbaddrs; virQEMUCapsPtr qemuCaps; char *lockState; diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c index ee44d45..f66b2f0 100644 --- a/src/qemu/qemu_domain_address.c +++ b/src/qemu/qemu_domain_address.c @@ -1622,11 +1622,44 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def, } +static int +qemuDomainAssignUSBAddresses(virDomainDefPtr def, + virDomainObjPtr obj) +{ + int ret = -1; + virDomainUSBAddressSetPtr addrs = NULL; + qemuDomainObjPrivatePtr priv = NULL; + + if (!(addrs = virDomainUSBAddressSetCreate())) + goto cleanup; + + if (virDomainUSBAddressSetAddControllers(addrs, def) < 0) + goto cleanup; + + if (virDomainUSBDeviceDefForeach(def, virDomainUSBAddressReserve, addrs, + true) < 0) + goto cleanup; + + VIR_DEBUG("Existing USB addresses have been reserved"); + + if (obj && obj->privateData) { + priv = obj->privateData; + priv->usbaddrs = addrs;

+ addrs = NULL; + } + ret = 0; + + cleanup: + virDomainUSBAddressSetFree(addrs); + return ret; +} + + int qemuDomainAssignAddresses(virDomainDefPtr def, virQEMUCapsPtr qemuCaps, virDomainObjPtr obj, - bool newDomain ATTRIBUTE_UNUSED) + bool newDomain) { if (qemuDomainAssignVirtioSerialAddresses(def, obj) < 0) return -1; @@ -1642,6 +1675,9 @@ qemuDomainAssignAddresses(virDomainDefPtr def, if (qemuDomainAssignPCIAddresses(def, qemuCaps, obj) < 0) return -1; + if (newDomain && qemuDomainAssignUSBAddresses(def, obj) < 0) + return -1; + return 0; }

diff --git a/tests/qemuxml2argvdata/qemuxml2argv-usb-hub-conflict.xml b/tests/qemuxml2argvdata/qemuxml2argv-usb-hub-conflict.xml new file mode 100644 index 0000000..9a48ba0 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-usb-hub-conflict.xml @@ -0,0 +1,22 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <devices> + <emulator>/usr/bin/qemu</emulator> + <controller type='usb' index='0'/> + <memballoon model='virtio'/> + <hub type='usb'> + <address type='usb' bus='0' port='1'/> + </hub> + <input type='mouse' bus='usb'> + <address type='usb' bus='0' port='1'/> + </input> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 4389e24..9c18989 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1159,6 +1159,9 @@ mymain(void) DO_TEST("usb-hub", QEMU_CAPS_CHARDEV, QEMU_CAPS_USB_HUB, QEMU_CAPS_NODEFCONFIG); + DO_TEST_PARSE_ERROR("usb-hub-conflict", + QEMU_CAPS_CHARDEV, QEMU_CAPS_USB_HUB, + QEMU_CAPS_NODEFCONFIG); DO_TEST("usb-port-missing", QEMU_CAPS_CHARDEV, QEMU_CAPS_USB_HUB, QEMU_CAPS_NODEFCONFIG);