Martin Polednik has uploaded a new change for review.
Change subject: vdsm hostdev: add support for USB devices
......................................................................
vdsm hostdev: add support for USB devices
Libvirt allows passthrough of USB devices (not busses) - this patch
exposes the functionality in vdsm
Change-Id: Iac74e7537d56bcb940ef07a4654d45cbcdbb1fb0
Signed-off-by: Martin Polednik <mpole...@redhat.com>
---
M vdsm/caps.py
M vdsm/rpc/vdsmapi-schema.json
M vdsm/virt/vm.py
3 files changed, 71 insertions(+), 10 deletions(-)
git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/54/29054/1
diff --git a/vdsm/caps.py b/vdsm/caps.py
index d937d4e..8c16af6 100644
--- a/vdsm/caps.py
+++ b/vdsm/caps.py
@@ -530,7 +530,12 @@
# back that we could use to uniquely identify and initiate a device
continue
- if capability in ('pci',):
+ if capability in ('pci', 'usb_device'):
+ # Libvirt only allows to attach USB device with capability 'usb',
+ # but the bus identifies itself as 'usb' while device as
+ # 'usb_device'
+ if dev['capability'] == 'usb_device':
+ dev['capability'] = 'usb'
devices.append(dev)
return devices
diff --git a/vdsm/rpc/vdsmapi-schema.json b/vdsm/rpc/vdsmapi-schema.json
index 921f3d4..ac10144 100644
--- a/vdsm/rpc/vdsmapi-schema.json
+++ b/vdsm/rpc/vdsmapi-schema.json
@@ -3156,33 +3156,55 @@
'specParams': 'VmRngDeviceSpecParams'}}
##
+# @StartupPolicy:
+#
+# Possible policies for startup with device
+#
+# @mandatory: fail if missing for any reason (the default)
+#
+# @requisite: fail if missing on boot up, drop if missing
+# on migrate/restore/revert
+#
+# @optional: drop if missing at any start attempt
+#
+# Since: 4.16.0
+##
+{'enum': 'StartupPolicy', 'data': ['mandatory', 'requisite', 'optional']}
+
+##
# @HostDeviceCapability:
#
# Properties of a host device.
#
# @pci: PCI device
#
+# @usb: USB device
+#
# Since: 4.16.0
##
-{'enum': 'HostDeviceCapability', 'data': ['pci']}
+{'enum': 'HostDeviceCapability', 'data': ['pci', 'usb']}
##
# @HostDeviceSpecParams:
#
# Properties of a host device.
#
-# @bootorder: #optional If specified, this device is part of the boot
-# sequence at the specified position
+# @bootorder: #optional If specified, this device is part of the boot
+# sequence at the specified position (for @pci and @usb)
#
-# @bar: #optional ROM visibility in the guest's memory map (for @pci)
+# @bar: #optional ROM visibility in the guest's
+# memory map (for @pci)
#
-# @file: #optional Binary file to be used as device's ROM (for @pci)
+# @file: #optional Binary file to be used as device's ROM (for @pci)
+#
+# @startupPolicy: #optional Possible boot handling with attached device
+# (for @usb)
#
# Since: 4.16.0
##
{'type': 'HostDeviceSpecParams',
- 'data': {'*bootorder': 'int', '*bar': 'bool',
- '*file': 'str'}}
+ 'data': {'*bootorder': 'int', '*bar': 'bool', '*file': 'str',
+ '*startupPolicy': 'StartupPolicy'}}
##
# @HostDevice:
diff --git a/vdsm/virt/vm.py b/vdsm/virt/vm.py
index 6143cfa..6a6978e 100644
--- a/vdsm/virt/vm.py
+++ b/vdsm/virt/vm.py
@@ -1631,13 +1631,16 @@
self.log.debug('Detaching hostdev %s', self.name)
self._node.dettach()
- def getPciAddr(self):
+ def _parsecaps(self):
capsxml = _domParseStr(self._node.XMLDesc(0)).childNodes[0]
self.log.debug('Got nodeDevice XML:\n%s',
capsxml.toprettyxml(encoding='utf-8'))
- capsxml = capsxml.getElementsByTagName('capability')[0]
+ return capsxml.getElementsByTagName('capability')[0]
+
+ def getPciAddr(self):
+ capsxml = self._parsecaps()
domain = capsxml.getElementsByTagName('domain')[0]. \
firstChild.nodeValue
bus = capsxml.getElementsByTagName('bus')[0].firstChild.nodeValue
@@ -1646,6 +1649,26 @@
self.log.debug('PCI device %s at address {domain: %s bus: %s '
'slot: %s}', self.name, domain, bus, slot)
return {'domain': domain, 'bus': bus, 'slot': slot}
+
+ def getUsbAddr(self):
+ capsxml = self._parsecaps()
+ addr = {}
+
+ addr['bus'] = capsxml.getElementsByTagName('bus')[0].firstChild. \
+ nodeValue
+ addr['device'] = capsxml.getElementsByTagName('device')[0]. \
+ firstChild.nodeValue
+ # TODO: handle nonexistant product_id and vendor_id by not adding them
+ # to addr
+ addr['product_id'] = capsxml.getElementsByTagName('product')[0].\
+ getAttribute('id')
+ addr['vendor_id'] = capsxml.getElementsByTagName('vendor')[0].\
+ getAttribute('id')
+
+ self.log.debug('USB device %s {product: %s, vendor: %s} at address '
+ '{bus: %s device: %s}', self.name, addr['product_id'],
+ addr['vendor_id'], addr['bus'], addr['device'])
+ return addr
def getXML(self):
"""
@@ -1683,6 +1706,17 @@
rom.setAttrs(**romAttrs)
+ elif self.capability == 'usb_device':
+ addr = self.getPciAddr()
+ try:
+ source.appendChildWithArgs('vendor', None, addr['vendor'])
+ source.appendChildWithArgs('vendor', None, addr['product'])
+ except:
+ source.appendChildWithArgs('address', None, **addr)
+
+ if 'startupPolicy' in self.specParams:
+ source.setAttrs(startupPolicy=self.specParams['startupPolicy'])
+
return hostdev
--
To view, visit http://gerrit.ovirt.org/29054
To unsubscribe, visit http://gerrit.ovirt.org/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: Iac74e7537d56bcb940ef07a4654d45cbcdbb1fb0
Gerrit-PatchSet: 1
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Martin Polednik <mpole...@redhat.com>
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