[libvirt] [PATCH 7/9] Reserve existing USB addresses
Ján Tomko
jtomko at redhat.com
Wed Aug 12 14:52:17 UTC 2015
If USB addresses have been provided for all USB devices,
or we are defining a new domain, reserve the addresses.
Check if they fit on the USB controllers the domain has,
and error out if two devices try to use the same address.
Do not error out on missing hubs.
The input-usbmouse test used port=4 even though the implicit
USB controller only has two.
---
src/conf/domain_addr.c | 109 ++++++++++++++++
src/conf/domain_addr.h | 6 +
src/libvirt_private.syms | 1 +
src/qemu/qemu_command.c | 137 ++++++++++++++++++++-
src/qemu/qemu_domain.h | 1 +
.../qemuxml2argv-input-usbmouse-addr.args | 2 +-
.../qemuxml2argv-input-usbmouse-addr.xml | 2 +-
.../qemuxml2argv-usb-hub-conflict.xml | 22 ++++
tests/qemuxml2argvtest.c | 3 +
9 files changed, 280 insertions(+), 3 deletions(-)
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 024d47b..cda6e08 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -1313,6 +1313,69 @@ static int virDomainUSBAddressSetAddController(virDomainUSBAddressSetPtr addrs,
}
+/* Finds the port specified by the port path in the device info.
+ * The USB bus is expected to exist.
+ * The USB hubs will be auto-created.
+ */
+static int
+virDomainUSBAddressFindPort(virDomainUSBAddressHubPtr **port,
+ virDomainUSBAddressSetPtr addrs,
+ virDomainDeviceInfoPtr info)
+{
+ ssize_t i;
+ virDomainUSBAddressHubPtr *hub = NULL;
+ char *portstr = NULL;
+ int ret = -1;
+
+ portstr = virDomainUSBAddressGetPortString(info->addr.usb.port);
+
+ if (addrs->nbuses <= info->addr.usb.bus ||
+ !addrs->buses[info->addr.usb.bus]) {
+ virReportError(VIR_ERR_XML_ERROR, _("Missing USB bus %u"),
+ info->addr.usb.bus);
+ goto cleanup;
+ }
+ hub = &(addrs->buses[info->addr.usb.bus]);
+
+ for (i = 0; i < VIR_DOMAIN_DEVICE_USB_MAX_PORT_DEPTH; i++) {
+ int portnum = info->addr.usb.port[i];
+ if (!portnum)
+ break;
+
+ if (!(*hub)) {
+ /* FIXME: Add the hub to the domain definition */
+ if (VIR_ALLOC(*hub) < 0)
+ goto cleanup;
+ if (VIR_ALLOC_N((*hub)->ports, 8+1) < 0) {
+ VIR_FREE((*hub));
+ goto cleanup;
+ }
+ (*hub)->nports = 8+1;
+ }
+ if ((*hub)->nports < portnum) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("port %u out of range in port path %s"),
+ portnum, portstr);
+ goto cleanup;
+ }
+ hub = &((*hub)->ports[info->addr.usb.port[i]]);
+ if ((*hub) && (*hub)->nports == 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Port %d is already occupied in port path %s"),
+ portnum, portstr);
+ goto cleanup;
+ }
+ }
+
+ ret = 0;
+ *port = hub;
+
+ cleanup:
+ VIR_FREE(portstr);
+ return ret;
+}
+
+
int virDomainUSBAddressSetAddControllers(virDomainUSBAddressSetPtr addrs,
virDomainDefPtr def)
{
@@ -1327,3 +1390,49 @@ int virDomainUSBAddressSetAddControllers(virDomainUSBAddressSetPtr addrs,
}
return 0;
}
+
+
+int
+virDomainUSBAddressReserve(virDomainDefPtr def ATTRIBUTE_UNUSED,
+ virDomainDeviceDefPtr dev ATTRIBUTE_UNUSED,
+ virDomainDeviceInfoPtr info,
+ void *data)
+{
+ virDomainUSBAddressSetPtr addrs = data;
+ virDomainUSBAddressHubPtr *port = NULL;
+ char *portstr = NULL;
+ int ret = -1;
+
+ if (info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB)
+ return 0;
+
+ portstr = virDomainUSBAddressGetPortString(info->addr.usb.port);
+ VIR_DEBUG("Reserving USB addr bus=%u port=%s", info->addr.usb.bus, portstr);
+
+ if (virDomainUSBAddressFindPort(&port, addrs, info) < 0)
+ goto cleanup;
+
+ if (dev &&
+ dev->type == VIR_DOMAIN_DEVICE_HUB &&
+ dev->data.hub->type == VIR_DOMAIN_HUB_TYPE_USB) {
+ if (!*port) {
+ if (VIR_ALLOC(*port) < 0)
+ goto cleanup;
+
+ if (VIR_ALLOC_N((*port)->ports, 8 + 1) < 0) {
+ VIR_FREE(*port);
+ goto cleanup;
+ }
+ (*port)->nports = 8 + 1;
+ }
+ } else {
+ if (VIR_ALLOC(*port) < 0)
+ goto cleanup;
+ }
+
+ ret = 0;
+
+ cleanup:
+ VIR_FREE(portstr);
+ return ret;
+}
diff --git a/src/conf/domain_addr.h b/src/conf/domain_addr.h
index 64d35e9..8f866ae 100644
--- a/src/conf/domain_addr.h
+++ b/src/conf/domain_addr.h
@@ -269,4 +269,10 @@ int virDomainUSBAddressSetAddControllers(virDomainUSBAddressSetPtr addrs,
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
void virDomainUSBAddressSetFree(virDomainUSBAddressSetPtr addrs);
+int
+virDomainUSBAddressReserve(virDomainDefPtr def,
+ virDomainDeviceDefPtr dev,
+ virDomainDeviceInfoPtr info,
+ void *data)
+ ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4);
#endif /* __DOMAIN_ADDR_H__ */
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 7db4839..1420b19 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -108,6 +108,7 @@ virDomainPCIAddressSlotInUse;
virDomainPCIAddressValidate;
virDomainUSBAddressGetPortBuf;
virDomainUSBAddressGetPortString;
+virDomainUSBAddressReserve;
virDomainUSBAddressSetAddControllers;
virDomainUSBAddressSetCreate;
virDomainUSBAddressSetFree;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 4b520d7..a6a3438 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1563,6 +1563,137 @@ int qemuDomainAssignSpaprVIOAddresses(virDomainDefPtr def,
}
+static void
+qemuDomainCountUSBAddresses(virDomainDefPtr def,
+ size_t *specified,
+ size_t *total)
+{
+ size_t i;
+ size_t spec = 0, tot = 0;
+
+ /* usb-hub */
+ for (i = 0; i < def->nhubs; i++) {
+ virDomainHubDefPtr hub = def->hubs[i];
+ if (hub->type == VIR_DOMAIN_HUB_TYPE_USB) {
+ tot++;
+ if (hub->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB)
+ spec++;
+ }
+ }
+
+ /* usb-host */
+ for (i = 0; i < def->nhostdevs; i++) {
+ virDomainHostdevDefPtr hostdev = def->hostdevs[i];
+ if (hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB) {
+ tot++;
+ if (hostdev->info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB)
+ spec++;
+ }
+ }
+
+ /* usb-storage */
+ for (i = 0; i < def->ndisks; i++) {
+ virDomainDiskDefPtr disk = def->disks[i];
+ if (disk->bus == VIR_DOMAIN_DISK_BUS_USB) {
+ tot++;
+ if (disk->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB)
+ spec++;
+ }
+ }
+
+ /* TODO: usb-net */
+
+ /* usb-ccid */
+ for (i = 0; i < def->ncontrollers; i++) {
+ virDomainControllerDefPtr cont = def->controllers[i];
+ if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_CCID) {
+ tot++;
+ if (cont->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB)
+ spec++;
+ }
+ }
+
+ /* usb-kbd, usb-mouse, usb-tablet */
+ for (i = 0; i < def->ninputs; i++) {
+ virDomainInputDefPtr input = def->inputs[i];
+
+ if (input->bus == VIR_DOMAIN_INPUT_BUS_USB) {
+ tot++;
+ if (input->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB)
+ spec++;
+ }
+ }
+
+ /* usb-serial */
+ for (i = 0; i < def->nserials; i++) {
+ virDomainChrDefPtr serial = def->serials[i];
+ if (serial->targetType == VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE_USB) {
+ tot++;
+ if (serial->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB)
+ spec++;
+ }
+ }
+
+ /* usb-audio model=usb */
+ for (i = 0; i < def->nsounds; i++) {
+ virDomainSoundDefPtr sound = def->sounds[i];
+ if (sound->model == VIR_DOMAIN_SOUND_MODEL_USB) {
+ tot++;
+ if (sound->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_USB)
+ spec++;
+ }
+ }
+
+ *specified = spec;
+ *total = tot;
+}
+
+static int
+qemuDomainAssignUSBAddresses(virDomainDefPtr def,
+ virDomainObjPtr obj,
+ bool newDomain)
+{
+ int ret = -1;
+ size_t total, specified;
+ virDomainUSBAddressSetPtr addrs = NULL;
+ qemuDomainObjPrivatePtr priv = NULL;
+
+ qemuDomainCountUSBAddresses(def, &specified, &total);
+ VIR_DEBUG("%zu out of %zu USB addresses have been specified", specified, total);
+
+ /* if ALL USB devices have their addresses assigned
+ * or we're creating a new domain, we can continue allocation,
+ * otherwise QEMU might create an incompatible machine by adding hubs
+ * and own addresses */
+ if (!(newDomain || total == specified))
+ return 0;
+
+ if (!(addrs = virDomainUSBAddressSetCreate()))
+ goto cleanup;
+
+ if (virDomainUSBAddressSetAddControllers(addrs, def) < 0)
+ goto cleanup;
+
+ if (virDomainDeviceInfoIterate(def, virDomainUSBAddressReserve, addrs) < 0)
+ goto cleanup;
+
+ VIR_DEBUG("Existing USB addresses have been reserved");
+
+ if (obj && obj->privateData) {
+ priv = obj->privateData;
+ /* if this is the live domain object, we persist the addresses */
+ priv->usbaddrs = addrs;
+ priv->persistentAddrs = 1;
+ addrs = NULL;
+ }
+ ret = 0;
+
+ cleanup:
+ virDomainUSBAddressSetFree(addrs);
+ return ret;
+}
+
+
static int
qemuCollectPCIAddress(virDomainDefPtr def ATTRIBUTE_UNUSED,
virDomainDeviceDefPtr device,
@@ -1774,7 +1905,7 @@ qemuDomainPCIBusFullyReserved(virDomainPCIAddressBusPtr bus)
int qemuDomainAssignAddresses(virDomainDefPtr def,
virQEMUCapsPtr qemuCaps,
virDomainObjPtr obj,
- bool newDomain ATTRIBUTE_UNUSED)
+ bool newDomain)
{
int rc;
@@ -1796,6 +1927,10 @@ int qemuDomainAssignAddresses(virDomainDefPtr def,
if (rc)
return rc;
+ rc = qemuDomainAssignUSBAddresses(def, obj, newDomain);
+ if (rc)
+ return rc;
+
return qemuDomainAssignPCIAddresses(def, qemuCaps, obj);
}
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 2af7c59..454f759 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -167,6 +167,7 @@ struct _qemuDomainObjPrivate {
virDomainPCIAddressSetPtr pciaddrs;
virDomainCCWAddressSetPtr ccwaddrs;
virDomainVirtioSerialAddrSetPtr vioserialaddrs;
+ virDomainUSBAddressSetPtr usbaddrs;
int persistentAddrs;
virQEMUCapsPtr qemuCaps;
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-input-usbmouse-addr.args b/tests/qemuxml2argvdata/qemuxml2argv-input-usbmouse-addr.args
index 07ea004..2f45b03 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-input-usbmouse-addr.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-input-usbmouse-addr.args
@@ -2,5 +2,5 @@ LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \
/usr/bin/qemu -S \
-M pc -m 214 -smp 1 -nographic -nodefconfig -nodefaults \
-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb \
--hda /dev/HostVG/QEMUGuest1 -device usb-mouse,id=input0,bus=usb.0,port=4 \
+-hda /dev/HostVG/QEMUGuest1 -device usb-mouse,id=input0,bus=usb.0,port=2 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-input-usbmouse-addr.xml b/tests/qemuxml2argvdata/qemuxml2argv-input-usbmouse-addr.xml
index a996838..dde3517 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-input-usbmouse-addr.xml
+++ b/tests/qemuxml2argvdata/qemuxml2argv-input-usbmouse-addr.xml
@@ -22,7 +22,7 @@
<controller type='usb' index='0'/>
<controller type='ide' index='0'/>
<input type='mouse' bus='usb'>
- <address type='usb' bus='0' port='4'/>
+ <address type='usb' bus='0' port='2'/>
</input>
</devices>
</domain>
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 8815087..feb1d85 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1171,6 +1171,9 @@ mymain(void)
DO_TEST("usb-hub",
QEMU_CAPS_CHARDEV, QEMU_CAPS_DEVICE, QEMU_CAPS_USB_HUB,
QEMU_CAPS_NODEFCONFIG);
+ DO_TEST_ERROR("usb-hub-conflict",
+ QEMU_CAPS_CHARDEV, QEMU_CAPS_DEVICE, QEMU_CAPS_USB_HUB,
+ QEMU_CAPS_NODEFCONFIG);
DO_TEST("usb-ports",
QEMU_CAPS_CHARDEV, QEMU_CAPS_DEVICE, QEMU_CAPS_USB_HUB,
QEMU_CAPS_NODEFCONFIG);
--
2.4.6
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