# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID 0e2b1e04d4cb536c7c24001e3a0127e05559e238
# Parent 549f4256ab3ceddc0abfba4f52de4a92bf74f766
g/c unused control message code.
Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/XendDomain.py
--- a/tools/python/xen/xend/XendDomain.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/XendDomain.py Wed Sep 7 18:28:04 2005
@@ -36,7 +36,6 @@
from xen.xend.XendError import XendError
from xen.xend.XendLogging import log
from xen.xend import scheduler
-from xen.xend.server import channel
from xen.xend.server import relocate
from xen.xend.uuid import getUuid
from xen.xend.xenstore import XenNode, DBMap
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/XendDomainInfo.py Wed Sep 7 18:28:04 2005
@@ -34,8 +34,7 @@
from xen.xend.server import controller
from xen.xend.server import SrvDaemon; xend = SrvDaemon.instance()
-from xen.xend.server import messages
-from xen.xend.server.channel import EventChannel, channelFactory
+from xen.xend.server.channel import EventChannel
from xen.util.blkif import blkdev_name_to_number, expand_dev_name
from xen.xend import sxp
@@ -258,7 +257,6 @@
self.target = None
- self.channel = None
self.store_channel = None
self.store_mfn = None
self.console_channel = None
@@ -296,8 +294,6 @@
self.db.saveDB(save=save, sync=sync)
def exportToDB(self, save=False, sync=False):
- if self.channel:
- self.channel.saveToDB(self.db.addChild("channel"), save=save)
if self.store_channel:
self.store_channel.saveToDB(self.db.addChild("store_channel"),
save=save)
@@ -329,9 +325,6 @@
def getName(self):
return self.name
-
- def getChannel(self):
- return self.channel
def getStoreChannel(self):
return self.store_channel
@@ -569,8 +562,6 @@
sxpr.append(['up_time', str(up_time) ])
sxpr.append(['start_time', str(self.start_time) ])
- if self.channel:
- sxpr.append(self.channel.sxpr())
if self.store_channel:
sxpr.append(self.store_channel.sxpr())
if self.store_mfn:
@@ -761,12 +752,6 @@
"""
self.state = STATE_VM_TERMINATED
self.release_devices()
- if self.channel:
- try:
- self.channel.close()
- self.channel = None
- except:
- pass
if self.store_channel:
try:
self.store_channel.close()
@@ -858,20 +843,6 @@
id, self.name, self.memory)
self.setdom(id)
- def openChannel(self, key, local, remote):
- """Create a control channel to the domain.
- If saved info is available recreate the channel.
-
- @param key db key for the saved data (if any)
- @param local default local port
- @param remote default remote port
- """
- db = self.db.addChild(key)
- chan = channelFactory().restoreFromDB(db, self.id, local, remote)
- #todo: save here?
- #chan.saveToDB(db)
- return chan
-
def eventChannel(self, key):
"""Create an event channel to the domain.
If saved info is available recreate the channel.
@@ -884,7 +855,6 @@
def create_channel(self):
"""Create the channels to the domain.
"""
- self.channel = self.openChannel("channel", 0, 1)
self.store_channel = self.eventChannel("store_channel")
self.console_channel = self.eventChannel("console/console_channel")
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/server/SrvDaemon.py
--- a/tools/python/xen/xend/server/SrvDaemon.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/server/SrvDaemon.py Wed Sep 7 18:28:04 2005
@@ -17,8 +17,6 @@
import time
import glob
-from xen.lowlevel import xu
-
from xen.xend import sxp
from xen.xend import PrettyPrint
from xen.xend import EventServer; eserver = EventServer.instance()
@@ -27,7 +25,6 @@
from xen.xend.XendLogging import log
from xen.xend import XendRoot; xroot = XendRoot.instance()
-import channel
import controller
import event
import relocate
@@ -37,7 +34,6 @@
"""The xend daemon.
"""
def __init__(self):
- self.channelF = None
self.shutdown = 0
self.traceon = 0
self.tracefile = None
@@ -298,10 +294,8 @@
_enforce_dom0_cpus()
try:
log.info("Xend Daemon started")
- self.createFactories()
event.listenEvent(self)
relocate.listenRelocation()
- self.listenChannels()
servers = SrvServer.create()
self.daemonize()
servers.start()
@@ -312,15 +306,7 @@
log.exception("Exception starting xend (%s)" % ex)
self.exit(1)
- def createFactories(self):
- self.channelF = channel.channelFactory()
-
- def listenChannels(self):
- self.channelF.start()
-
def exit(self, rc=0):
- if self.channelF:
- self.channelF.stop()
# Calling sys.exit() raises a SystemExit exception, which only
# kills the current thread. Calling os._exit() makes the whole
# Python process exit immediately. There doesn't seem to be another
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/server/blkif.py
--- a/tools/python/xen/xend/server/blkif.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/server/blkif.py Wed Sep 7 18:28:04 2005
@@ -27,9 +27,7 @@
from xen.xend import Blkctl
from xen.xend.xenstore import DBVar
-from xen.xend.server import channel
-from xen.xend.server.controller import CtrlMsgRcvr, Dev, DevController
-from xen.xend.server.messages import *
+from xen.xend.server.controller import Dev, DevController
class BlkifBackend:
""" Handler for the 'back-end' channel to a block device driver domain
@@ -41,21 +39,15 @@
self.controller = controller
self.id = id
self.frontendDomain = self.controller.getDomain()
- self.frontendChannel = None
self.backendDomain = dom
- self.backendChannel = None
self.destroyed = False
self.connected = False
- self.evtchn = None
self.status = None
def init(self, recreate=False, reboot=False):
self.destroyed = False
self.status = BLKIF_INTERFACE_STATUS_DISCONNECTED
self.frontendDomain = self.controller.getDomain()
- self.frontendChannel = self.controller.getChannel()
- cf = channel.channelFactory()
- self.backendChannel = cf.openChannel(self.backendDomain)
def __str__(self):
return ('<BlkifBackend frontend=%d backend=%d id=%d>'
@@ -66,29 +58,6 @@
def getId(self):
return self.id
- def getEvtchn(self):
- return self.evtchn
-
- def closeEvtchn(self):
- if self.evtchn:
- channel.eventChannelClose(self.evtchn)
- self.evtchn = None
-
- def openEvtchn(self):
- self.evtchn = channel.eventChannel(self.backendDomain,
self.frontendDomain)
-
- def getEventChannelBackend(self):
- val = 0
- if self.evtchn:
- val = self.evtchn['port1']
- return val
-
- def getEventChannelFrontend(self):
- val = 0
- if self.evtchn:
- val = self.evtchn['port2']
- return val
-
def connect(self, recreate=False):
"""Connect to the blkif control interface.
@@ -98,83 +67,19 @@
if recreate or self.connected:
self.connected = True
pass
- else:
- self.send_be_create()
-
- def send_be_create(self):
- log.debug("send_be_create %s", str(self))
- msg = packMsg('blkif_be_create_t',
- { 'domid' : self.frontendDomain,
- 'blkif_handle' : self.id })
- msg = self.backendChannel.requestResponse(msg)
- #todo: check return status
- self.connected = True
-
+
def destroy(self, change=False, reboot=False):
"""Disconnect from the blkif control interface and destroy it.
"""
- self.send_be_disconnect()
- self.send_be_destroy()
- self.closeEvtchn()
self.destroyed = True
# For change true need to notify front-end, or back-end will do it?
- def send_be_disconnect(self):
- msg = packMsg('blkif_be_disconnect_t',
- { 'domid' : self.frontendDomain,
- 'blkif_handle' : self.id })
- self.backendChannel.requestResponse(msg)
- #todo: check return status
- self.connected = False
-
- def send_be_destroy(self):
- msg = packMsg('blkif_be_destroy_t',
- { 'domid' : self.frontendDomain,
- 'blkif_handle' : self.id })
- self.backendChannel.requestResponse(msg)
- #todo: check return status
-
def connectInterface(self, val):
- self.openEvtchn()
- log.debug("Connecting blkif to event channel %s ports=%d:%d",
- str(self), self.evtchn['port1'], self.evtchn['port2'])
- msg = packMsg('blkif_be_connect_t',
- { 'domid' : self.frontendDomain,
- 'blkif_handle' : self.id,
- 'evtchn' : self.getEventChannelBackend(),
- 'shmem_frame' : val['shmem_frame'],
- 'shmem_ref' : val['shmem_ref'] })
- msg = self.backendChannel.requestResponse(msg)
- #todo: check return status
- val = unpackMsg('blkif_be_connect_t', msg)
self.status = BLKIF_INTERFACE_STATUS_CONNECTED
- self.send_fe_interface_status()
- def send_fe_interface_status(self):
- msg = packMsg('blkif_fe_interface_status_t',
- { 'handle' : self.id,
- 'status' : self.status,
- 'domid' : self.backendDomain,
- 'evtchn' : self.getEventChannelFrontend() })
- self.frontendChannel.writeRequest(msg)
-
def interfaceDisconnected(self):
self.status = BLKIF_INTERFACE_STATUS_DISCONNECTED
- #todo?: Close evtchn:
- #self.closeEvtchn()
- self.send_fe_interface_status()
-
- def interfaceChanged(self):
- """Notify the front-end that devices have been added or removed.
- The front-end should then probe for devices.
- """
- msg = packMsg('blkif_fe_interface_status_t',
- { 'handle' : self.id,
- 'status' : BLKIF_INTERFACE_STATUS_CHANGED,
- 'domid' : self.backendDomain,
- 'evtchn' : 0 })
- self.frontendChannel.writeRequest(msg)
-
+
class BlkDev(Dev):
"""Info record for a block device.
"""
@@ -207,24 +112,17 @@
self.nr_sectors = None
self.frontendDomain = self.getDomain()
- self.frontendChannel = None
self.backendDomain = None
- self.backendChannel = None
self.backendId = 0
self.configure(self.config, recreate=recreate)
def exportToDB(self, save=False):
Dev.exportToDB(self, save=save)
backend = self.getBackend()
- if backend and backend.evtchn:
- db = self.db.addChild("evtchn")
- backend.evtchn.saveToDB(db, save=save)
def init(self, recreate=False, reboot=False):
self.frontendDomain = self.getDomain()
- self.frontendChannel = self.getChannel()
backend = self.getBackend()
- self.backendChannel = backend.backendChannel
self.backendId = backend.id
def configure(self, config, change=False, recreate=False):
@@ -351,7 +249,6 @@
self.destroyed = True
log.debug("Destroying vbd domain=%d id=%s", self.frontendDomain,
self.id)
- self.send_be_vbd_destroy()
if change:
self.interfaceChanged()
self.unbind()
@@ -367,30 +264,6 @@
"""
self.getBackend().connect()
- self.send_be_vbd_create()
-
- def send_be_vbd_create(self):
- msg = packMsg('blkif_be_vbd_create_t',
- { 'domid' : self.frontendDomain,
- 'blkif_handle' : self.backendId,
- 'pdevice' : self.device,
- 'dev_handle' : self.dev_handle,
- 'vdevice' : self.vdev,
- 'readonly' : self.readonly() })
- msg = self.backendChannel.requestResponse(msg)
-
- val = unpackMsg('blkif_be_vbd_create_t', msg)
- status = val['status']
- if status != BLKIF_BE_STATUS_OKAY:
- raise XendError("Creating vbd failed: device %s, error %d"
- % (sxp.to_string(self.config), status))
-
- def send_be_vbd_destroy(self):
- msg = packMsg('blkif_be_vbd_destroy_t',
- { 'domid' : self.frontendDomain,
- 'blkif_handle' : self.backendId,
- 'vdevice' : self.vdev })
- return self.backendChannel.writeRequest(msg)
class BlkifController(DevController):
"""Block device interface controller. Handles all block devices
@@ -403,19 +276,9 @@
DevController.__init__(self, vm, recreate=recreate)
self.backends = {}
self.backendId = 0
- self.rcvr = None
def initController(self, recreate=False, reboot=False):
self.destroyed = False
- # Add our handlers for incoming requests.
- self.rcvr = CtrlMsgRcvr(self.getChannel())
- self.rcvr.addHandler(CMSG_BLKIF_FE,
- CMSG_BLKIF_FE_DRIVER_STATUS,
- self.recv_fe_driver_status)
- self.rcvr.addHandler(CMSG_BLKIF_FE,
- CMSG_BLKIF_FE_INTERFACE_CONNECT,
- self.recv_fe_interface_connect)
- self.rcvr.registerChannel()
if reboot:
self.rebootBackends()
self.rebootDevices()
@@ -465,26 +328,7 @@
log.debug("Destroying blkif domain=%d", self.getDomain())
self.destroyDevices(reboot=reboot)
self.destroyBackends(reboot=reboot)
- self.rcvr.deregisterChannel()
def destroyBackends(self, reboot=False):
for backend in self.backends.values():
backend.destroy(reboot=reboot)
-
- def recv_fe_driver_status(self, msg):
- val = unpackMsg('blkif_fe_driver_status_t', msg)
- for backend in self.backends.values():
- backend.interfaceDisconnected()
-
- def recv_fe_interface_connect(self, msg):
- val = unpackMsg('blkif_fe_interface_connect_t', msg)
- id = val['handle']
- backend = self.getBackendById(id)
- if backend:
- try:
- backend.connectInterface(val)
- except IOError, ex:
- log.error("Exception connecting backend: %s", ex)
- else:
- log.error('interface connect on unknown interface: id=%d', id)
-
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/server/channel.py
--- a/tools/python/xen/xend/server/channel.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/server/channel.py Wed Sep 7 18:28:04 2005
@@ -22,8 +22,6 @@
from xen.lowlevel import xu
from xen.xend.XendLogging import log
-
-from messages import *
DEBUG = 0
@@ -132,473 +130,3 @@
"""
if not evtchn: return
evtchn.close()
-
-class ChannelFactory:
- """Factory for creating control channels.
- Maintains a table of channels.
- """
-
- """ Channels indexed by index. """
- channels = None
-
- thread = None
-
- notifier = None
-
- def __init__(self):
- """Constructor - do not use. Use the channelFactory function."""
- self.channels = {}
- self.notifier = xu.notifier()
-
- def start(self):
- """Fork a thread to read messages.
- """
- if self.thread: return
- self.thread = threading.Thread(name="ChannelFactory",
- target=self.main)
- self.thread.setDaemon(True)
- self.thread.start()
-
- def stop(self):
- """Signal the thread to stop.
- """
- self.thread = None
-
- def main(self):
- """Main routine for the thread.
- Reads the notifier and dispatches to channels.
- """
- while True:
- if self.thread == None: return
- port = self.notifier.read()
- if port:
- self.msgReceived(port)
- else:
- select.select([self.notifier], [], [], 1.0)
-
- def msgReceived(self, port):
- # We run the message handlers in their own threads.
- # Note we use keyword args to lambda to save the values -
- # otherwise lambda will use the variables, which will get
- # assigned by the loop and the lambda will get the changed values.
- received = 0
- for chan in self.channels.values():
- if self.thread == None: return
- msg = chan.readResponse()
- if msg:
- received += 1
- chan.responseReceived(msg)
- for chan in self.channels.values():
- if self.thread == None: return
- msg = chan.readRequest()
- if msg:
- received += 1
- self.runInThread(lambda chan=chan, msg=msg:
chan.requestReceived(msg))
- if port and received == 0:
- log.warning("Port %s notified, but no messages found", port)
-
- def runInThread(self, thunk):
- thread = threading.Thread(target = thunk)
- thread.setDaemon(True)
- thread.start()
-
- def newChannel(self, dom, local_port, remote_port):
- """Create a new channel.
- """
- return self.addChannel(Channel(self, dom, local_port, remote_port))
-
- def addChannel(self, channel):
- """Add a channel.
- """
- self.channels[channel.getKey()] = channel
- return channel
-
- def delChannel(self, channel):
- """Remove the channel.
- """
- key = channel.getKey()
- if key in self.channels:
- del self.channels[key]
-
- def getChannel(self, dom, local_port, remote_port):
- """Get the channel with the given domain and ports (if any).
- """
- key = (dom, local_port, remote_port)
- return self.channels.get(key)
-
- def findChannel(self, dom, local_port=0, remote_port=0):
- """Find a channel. Ports given as zero are wildcards.
-
- dom domain
-
- returns channel
- """
- chan = self.getChannel(dom, local_port, remote_port)
- if chan: return chan
- if local_port and remote_port:
- return None
- for c in self.channels.values():
- if c.dom != dom: continue
- if local_port and local_port != c.getLocalPort(): continue
- if remote_port and remote_port != c.getRemotePort(): continue
- return c
- return None
-
- def openChannel(self, dom, local_port=0, remote_port=0):
- chan = self.findChannel(dom, local_port=local_port,
- remote_port=remote_port)
- if chan:
- return chan
- chan = self.newChannel(dom, local_port, remote_port)
- return chan
-
-
- def createPort(self, dom, local_port=0, remote_port=0):
- """Create a port for a channel to the given domain.
- If only the domain is specified, a new channel with new port ids is
- created. If one port id is specified and the given port id is in use,
- the other port id is filled. If one port id is specified and the
- given port id is not in use, a new channel is created with one port
- id equal to the given id and a new id for the other end. If both
- port ids are specified, a port is reconnected using the given port
- ids.
-
- @param dom: domain
- @param local: local port id to use
- @type local: int
- @param remote: remote port id to use
- @type remote: int
- @return: port object
- """
- return xu.port(dom, local_port=local_port, remote_port=remote_port)
-
- def restoreFromDB(self, db, dom, local, remote):
- """Create a channel using ports restored from the db (if available).
- Otherwise use the given ports. This is the inverse operation to
- saveToDB() on a channel.
-
- @param db db
- @param dom domain the channel connects to
- @param local default local port
- @param remote default remote port
- """
- try:
- local_port = int(db['local_port'])
- except:
- local_port = local
- try:
- remote_port = int(db['remote_port'])
- except:
- remote_port = remote
- try:
- chan = self.openChannel(dom, local_port, remote_port)
- except:
- return None
- return chan
-
-def channelFactory():
- """Singleton constructor for the channel factory.
- Use this instead of the class constructor.
- """
- global inst
- try:
- inst
- except:
- inst = ChannelFactory()
- return inst
-
-class Channel:
- """Control channel to a domain.
- Maintains a list of device handlers to dispatch requests to, based
- on the request type.
- """
-
- def __init__(self, factory, dom, local_port, remote_port):
- self.factory = factory
- self.dom = int(dom)
- # Registered device handlers.
- self.devs = []
- # Handlers indexed by the message types they handle.
- self.devs_by_type = {}
- self.port = self.factory.createPort(self.dom,
- local_port=local_port,
- remote_port=remote_port)
- self.closed = False
- # Queue of waiters for responses to requests.
- self.queue = ResponseQueue(self)
- # Make sure the port will deliver all the messages.
- self.port.register(TYPE_WILDCARD)
-
- def saveToDB(self, db, save=False):
- """Save the channel ports to the db so the channel can be restored
later,
- using restoreFromDB() on the factory.
-
- @param db db
- """
- if self.closed: return
- db['local_port'] = str(self.getLocalPort())
- db['remote_port'] = str(self.getRemotePort())
- db.saveDB(save=save)
-
- def getKey(self):
- """Get the channel key.
- """
- return (self.dom, self.getLocalPort(), self.getRemotePort())
-
- def sxpr(self):
- val = ['channel']
- val.append(['domain', self.dom])
- if self.port:
- val.append(['local_port', self.port.local_port])
- val.append(['remote_port', self.port.remote_port])
- return val
-
- def close(self):
- """Close the channel.
- """
- if DEBUG:
- print 'Channel>close>', self
- if self.closed: return
- self.closed = True
- self.factory.delChannel(self)
- for d in self.devs[:]:
- d.lostChannel(self)
- self.devs = []
- self.devs_by_type = {}
- if self.port:
- self.port.close()
- #self.port = None
-
- def getDomain(self):
- return self.dom
-
- def getLocalPort(self):
- """Get the local port.
-
- @return: local port
- @rtype: int
- """
- if self.closed: return -1
- return self.port.local_port
-
- def getRemotePort(self):
- """Get the remote port.
-
- @return: remote port
- @rtype: int
- """
- if self.closed: return -1
- return self.port.remote_port
-
- def __repr__(self):
- return ('<Channel dom=%d ports=%d:%d>'
- % (self.dom,
- self.getLocalPort(),
- self.getRemotePort()))
-
-
- def registerDevice(self, types, dev):
- """Register a device message handler.
-
- @param types: message types handled
- @type types: array of ints
- @param dev: device handler
- """
- if self.closed: return
- self.devs.append(dev)
- for ty in types:
- self.devs_by_type[ty] = dev
-
- def deregisterDevice(self, dev):
- """Remove the registration for a device handler.
-
- @param dev: device handler
- """
- if dev in self.devs:
- self.devs.remove(dev)
- types = [ ty for (ty, d) in self.devs_by_type.items() if d == dev ]
- for ty in types:
- del self.devs_by_type[ty]
-
- def getDevice(self, type):
- """Get the handler for a message type.
-
- @param type: message type
- @type type: int
- @return: controller or None
- @rtype: device handler
- """
- return self.devs_by_type.get(type)
-
- def requestReceived(self, msg):
- """A request has been received on the channel.
- Disptach it to the device handlers.
- Called from the channel factory thread.
- """
- if DEBUG:
- print 'Channel>requestReceived>', self,
- printMsg(msg)
- (ty, subty) = getMessageType(msg)
- responded = False
- dev = self.getDevice(ty)
- if dev:
- responded = dev.requestReceived(msg, ty, subty)
- elif DEBUG:
- print "Channel>requestReceived> No device handler", self,
- printMsg(msg)
- else:
- pass
- if not responded:
- self.writeResponse(msg)
-
- def writeRequest(self, msg):
- """Write a request to the channel.
- """
- if DEBUG:
- print 'Channel>writeRequest>', self,
- printMsg(msg, all=True)
- if self.closed: return -1
- self.port.write_request(msg)
- return 1
-
- def writeResponse(self, msg):
- """Write a response to the channel.
- """
- if DEBUG:
- print 'Channel>writeResponse>', self,
- printMsg(msg, all=True)
- if self.port:
- self.port.write_response(msg)
- return 1
-
- def readRequest(self):
- """Read a request from the channel.
- Called internally.
- """
- if self.closed:
- val = None
- else:
- val = self.port.read_request()
- return val
-
- def readResponse(self):
- """Read a response from the channel.
- Called internally.
- """
- if self.closed:
- val = None
- else:
- val = self.port.read_response()
- if DEBUG and val:
- print 'Channel>readResponse>', self,
- printMsg(val, all=True)
- return val
-
- def requestResponse(self, msg, timeout=None):
- """Write a request and wait for a response.
- Raises IOError on timeout.
-
- @param msg request message
- @param timeout timeout (0 is forever)
- @return response message
- """
- if self.closed:
- raise IOError("closed")
- if self.closed:
- return None
- if timeout is None:
- timeout = RESPONSE_TIMEOUT
- elif timeout <= 0:
- timeout = None
- return self.queue.call(msg, timeout)
-
- def responseReceived(self, msg):
- """A response has been received, look for a waiter to
- give it to.
- Called internally.
- """
- if DEBUG:
- print 'Channel>responseReceived>', self,
- printMsg(msg)
- self.queue.response(getMessageId(msg), msg)
-
-class Response:
- """Entry in the response queue.
- Used to signal a response to a message.
- """
-
- def __init__(self, mid):
- self.mid = mid
- self.msg = None
- self.ready = threading.Event()
-
- def response(self, msg):
- """Signal arrival of a response to a waiting thread.
- Passing msg None cancels the wait with an IOError.
- """
- if msg:
- self.msg = msg
- else:
- self.mid = -1
- self.ready.set()
-
- def wait(self, timeout):
- """Wait up to 'timeout' seconds for a response.
- Returns the response or raises an IOError.
- """
- self.ready.wait(timeout)
- if self.mid < 0:
- raise IOError("wait canceled")
- if self.msg is None:
- raise IOError("response timeout")
- return self.msg
-
-class ResponseQueue:
- """Response queue. Manages waiters for responses to messages.
- """
-
- def __init__(self, channel):
- self.channel = channel
- self.lock = threading.Lock()
- self.responses = {}
-
- def add(self, mid):
- r = Response(mid)
- self.responses[mid] = r
- return r
-
- def get(self, mid):
- return self.responses.get(mid)
-
- def remove(self, mid):
- r = self.responses.get(mid)
- if r:
- del self.responses[mid]
- return r
-
- def response(self, mid, msg):
- """Process a response - signals any waiter that a response
- has arrived.
- """
- try:
- self.lock.acquire()
- r = self.remove(mid)
- finally:
- self.lock.release()
- if r:
- r.response(msg)
-
- def call(self, msg, timeout):
- """Send the message and wait for 'timeout' seconds for a response.
- Returns the response.
- Raises IOError on timeout.
- """
- mid = getMessageId(msg)
- try:
- self.lock.acquire()
- r = self.add(mid)
- finally:
- self.lock.release()
- self.channel.writeRequest(msg)
- return r.wait(timeout)
-
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/server/controller.py
--- a/tools/python/xen/xend/server/controller.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/server/controller.py Wed Sep 7 18:28:04 2005
@@ -21,106 +21,8 @@
from xen.xend.XendError import XendError
from xen.xend.xenstore import DBVar
-from xen.xend.server.messages import msgTypeName, printMsg, getMessageType
DEBUG = 0
-
-class CtrlMsgRcvr:
- """Utility class to dispatch messages on a control channel.
- Once I{registerChannel} has been called, our message types are registered
- with the channel. The channel will call I{requestReceived}
- when a request arrives if it has one of our message types.
-
- @ivar channel: channel to a domain
- @type channel: Channel
- @ivar majorTypes: major message types we are interested in
- @type majorTypes: {int:{int:method}}
-
- """
-
- def __init__(self, channel):
- self.majorTypes = {}
- self.channel = channel
-
- def getHandler(self, type, subtype):
- """Get the method for a type and subtype.
-
- @param type: major message type
- @param subtype: minor message type
- @return: method or None
- """
- method = None
- subtypes = self.majorTypes.get(type)
- if subtypes:
- method = subtypes.get(subtype)
- return method
-
- def addHandler(self, type, subtype, method):
- """Add a method to handle a message type and subtype.
-
- @param type: major message type
- @param subtype: minor message type
- @param method: method
- """
- subtypes = self.majorTypes.get(type)
- if not subtypes:
- subtypes = {}
- self.majorTypes[type] = subtypes
- subtypes[subtype] = method
-
- def getMajorTypes(self):
- """Get the list of major message types handled.
- """
- return self.majorTypes.keys()
-
- def requestReceived(self, msg, type, subtype):
- """Dispatch a request message to handlers.
- Called by the channel for requests with one of our types.
-
- @param msg: message
- @type msg: xu message
- @param type: major message type
- @type type: int
- @param subtype: minor message type
- @type subtype: int
- """
- if DEBUG:
- print 'requestReceived>',
- printMsg(msg, all=True)
- responded = 0
- method = self.getHandler(type, subtype)
- if method:
- responded = method(msg)
- elif DEBUG:
- print ('requestReceived> No handler: Message type %s %d:%d'
- % (msgTypeName(type, subtype), type, subtype)), self
- return responded
-
-
- def lostChannel(self):
- """Called when the channel to the domain is lost.
- """
- if DEBUG:
- print 'CtrlMsgRcvr>lostChannel>',
- self.channel = None
-
- def registerChannel(self):
- """Register interest in our major message types with the
- channel to our domain. Once we have registered, the channel
- will call requestReceived for our messages.
- """
- if DEBUG:
- print 'CtrlMsgRcvr>registerChannel>', self.channel,
self.getMajorTypes()
- if self.channel:
- self.channel.registerDevice(self.getMajorTypes(), self)
-
- def deregisterChannel(self):
- """Deregister interest in our major message types with the
- channel to our domain. After this the channel won't call
- us any more.
- """
- if self.channel:
- self.channel.deregisterDevice(self)
class DevControllerTable:
"""Table of device controller classes, indexed by type name.
@@ -232,10 +134,6 @@
def getDomainName(self):
return self.vm.getName()
- def getChannel(self):
- chan = self.vm.getChannel()
- return chan
-
def getDomainInfo(self):
return self.vm
@@ -433,9 +331,6 @@
def getDomainName(self):
return self.controller.getDomainName()
- def getChannel(self):
- return self.controller.getChannel()
-
def getDomainInfo(self):
return self.controller.getDomainInfo()
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/server/event.py
--- a/tools/python/xen/xend/server/event.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/server/event.py Wed Sep 7 18:28:04 2005
@@ -174,11 +174,6 @@
else:
logging.removeLogStderr()
- def op_debug_msg(self, name, v):
- mode = v[1]
- import messages
- messages.DEBUG = (mode == 'on')
-
def op_debug_controller(self, name, v):
mode = v[1]
import controller
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/server/netif.py
--- a/tools/python/xen/xend/server/netif.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/server/netif.py Wed Sep 7 18:28:04 2005
@@ -30,9 +30,7 @@
from xen.xend.XendRoot import get_component
from xen.xend.xenstore import DBVar
-from xen.xend.server import channel
-from xen.xend.server.controller import CtrlMsgRcvr, Dev, DevController
-from xen.xend.server.messages import *
+from xen.xend.server.controller import Dev, DevController
class NetDev(Dev):
"""A network device.
@@ -90,12 +88,9 @@
def __init__(self, controller, id, config, recreate=False):
Dev.__init__(self, controller, id, config, recreate=recreate)
self.vif = int(self.id)
- self.evtchn = None
self.status = None
self.frontendDomain = self.getDomain()
- self.frontendChannel = None
self.backendDomain = None
- self.backendChannel = None
self.credit = None
self.period = None
self.mac = None
@@ -109,17 +104,11 @@
def exportToDB(self, save=False):
Dev.exportToDB(self, save=save)
- if self.evtchn:
- db = self.db.addChild("evtchn")
- self.evtchn.saveToDB(db, save=save)
def init(self, recreate=False, reboot=False):
self.destroyed = False
self.status = NETIF_INTERFACE_STATUS_DISCONNECTED
self.frontendDomain = self.getDomain()
- self.frontendChannel = self.getChannel()
- cf = channel.channelFactory()
- self.backendChannel = cf.openChannel(self.backendDomain)
def _get_config_mac(self, config):
vmac = sxp.child_value(config, 'mac')
@@ -287,10 +276,6 @@
val.append(['credit', self.credit])
if self.period:
val.append(['period', self.period])
- if self.evtchn:
- val.append(['evtchn',
- self.evtchn['port1'],
- self.evtchn['port2']])
return val
def get_vifname(self):
@@ -348,42 +333,11 @@
if recreate:
pass
else:
- self.send_be_create()
if self.credit and self.period:
- self.send_be_creditlimit(self.credit, self.period)
+ #self.send_be_creditlimit(self.credit, self.period)
+ pass
self.vifctl('up', vmname=self.getDomainName())
- def closeEvtchn(self):
- if self.evtchn:
- channel.eventChannelClose(self.evtchn)
- self.evtchn = None
-
- def openEvtchn(self):
- self.evtchn = channel.eventChannel(self.backendDomain,
self.frontendDomain)
-
- def getEventChannelBackend(self):
- val = 0
- if self.evtchn:
- val = self.evtchn['port1']
- return val
-
- def getEventChannelFrontend(self):
- val = 0
- if self.evtchn:
- val = self.evtchn['port2']
- return val
-
- def send_be_create(self):
- msg = packMsg('netif_be_create_t',
- { 'domid' : self.frontendDomain,
- 'netif_handle' : self.vif,
- 'be_mac' : self.be_mac or [0, 0, 0, 0, 0, 0],
- 'mac' : self.mac,
- #'vifname' : self.vifname
- })
- msg = self.backendChannel.requestResponse(msg)
- # todo: check return status
-
def destroy(self, change=False, reboot=False):
"""Destroy the device's resources and disconnect from the back-end
device controller. If 'change' is true notify the front-end interface.
@@ -393,47 +347,14 @@
self.destroyed = True
self.status = NETIF_INTERFACE_STATUS_CLOSED
log.debug("Destroying vif domain=%d vif=%d", self.frontendDomain,
self.vif)
- self.closeEvtchn()
self.vifctl('down')
- self.send_be_disconnect()
- self.send_be_destroy()
if change:
self.reportStatus()
-
- def send_be_disconnect(self):
- msg = packMsg('netif_be_disconnect_t',
- { 'domid' : self.frontendDomain,
- 'netif_handle' : self.vif })
- self.backendChannel.requestResponse(msg)
- #todo: check return status
-
- def send_be_destroy(self, response=None):
- msg = packMsg('netif_be_destroy_t',
- { 'domid' : self.frontendDomain,
- 'netif_handle' : self.vif })
- self.backendChannel.requestResponse(msg)
- #todo: check return status
-
- def recv_fe_interface_connect(self, val):
- self.openEvtchn()
- msg = packMsg('netif_be_connect_t',
- { 'domid' : self.frontendDomain,
- 'netif_handle' : self.vif,
- 'evtchn' : self.getEventChannelBackend(),
- 'tx_shmem_frame' : val['tx_shmem_frame'],
- 'tx_shmem_ref' : val['tx_shmem_ref'],
- 'rx_shmem_frame' : val['rx_shmem_frame'],
- 'rx_shmem_ref' : val['rx_shmem_ref'] })
- msg = self.backendChannel.requestResponse(msg)
- #todo: check return status
- self.status = NETIF_INTERFACE_STATUS_CONNECTED
- self.reportStatus()
def setCreditLimit(self, credit, period):
#todo: these params should be in sxpr and vif config.
self.credit = credit
self.period = period
- self.send_be_creditlimit(credit, period)
def getCredit(self):
return self.credit
@@ -441,31 +362,10 @@
def getPeriod(self):
return self.period
- def send_be_creditlimit(self, credit, period):
- msg = packMsg('netif_be_creditlimit_t',
- { 'domid' : self.frontendDomain,
- 'netif_handle' : self.vif,
- 'credit_bytes' : credit,
- 'period_usec' : period })
- msg = self.backendChannel.requestResponse(msg)
- # todo: check return status
-
- def reportStatus(self, resp=False):
- msg = packMsg('netif_fe_interface_status_t',
- { 'handle' : self.vif,
- 'status' : self.status,
- 'evtchn' : self.getEventChannelFrontend(),
- 'domid' : self.backendDomain,
- 'mac' : self.mac })
- if resp:
- self.frontendChannel.writeResponse(msg)
- else:
- self.frontendChannel.writeRequest(msg)
-
def interfaceChanged(self):
"""Notify the front-end that a device has been added or removed.
"""
- self.reportStatus()
+ pass
class NetifController(DevController):
"""Network interface controller. Handles all network devices for a domain.
@@ -473,25 +373,9 @@
def __init__(self, vm, recreate=False):
DevController.__init__(self, vm, recreate=recreate)
- self.channel = None
- self.rcvr = None
- self.channel = None
def initController(self, recreate=False, reboot=False):
self.destroyed = False
- self.channel = self.getChannel()
- # Register our handlers for incoming requests.
- self.rcvr = CtrlMsgRcvr(self.channel)
- self.rcvr.addHandler(CMSG_NETIF_FE,
- CMSG_NETIF_FE_DRIVER_STATUS,
- self.recv_fe_driver_status)
- self.rcvr.addHandler(CMSG_NETIF_FE,
- CMSG_NETIF_FE_INTERFACE_STATUS,
- self.recv_fe_interface_status)
- self.rcvr.addHandler(CMSG_NETIF_FE,
- CMSG_NETIF_FE_INTERFACE_CONNECT,
- self.recv_fe_interface_connect)
- self.rcvr.registerChannel()
if reboot:
self.rebootDevices()
@@ -501,8 +385,6 @@
self.destroyed = True
log.debug("Destroying netif domain=%d", self.getDomain())
self.destroyDevices(reboot=reboot)
- if self.rcvr:
- self.rcvr.deregisterChannel()
def sxpr(self):
val = ['netif', ['dom', self.getDomain()]]
@@ -524,57 +406,3 @@
dev = self.devices[vif]
return dev.setCreditLimit(credit, period)
-
- def recv_fe_driver_status(self, msg):
- msg = packMsg('netif_fe_driver_status_t',
- { 'status' : NETIF_DRIVER_STATUS_UP,
- ## FIXME: max_handle should be max active interface id
- 'max_handle' : self.getDeviceCount()
- #'max_handle' : self.getMaxDeviceId()
- })
- # Two ways of doing it:
- # 1) front-end requests driver status, we reply with the interface
count,
- # front-end polls the interfaces,
- # front-end checks they are all up
- # 2) front-end requests driver status, we reply (with anything),
- # we notify the interfaces,
- # we notify driver status up with the count
- # front-end checks they are all up
- #
- # We really want to use 1), but at the moment the xenU kernel panics
- # in that mode, so we're sticking to 2) for now.
- resp = False
- if resp:
- self.channel.writeResponse(msg)
- else:
- for dev in self.devices.values():
- dev.reportStatus()
- self.channel.writeRequest(msg)
- return resp
-
- def recv_fe_interface_status(self, msg):
- val = unpackMsg('netif_fe_interface_status_t', msg)
- vif = val['handle']
- dev = self.findDevice(vif)
- if dev:
- dev.reportStatus(resp=True)
- else:
- log.error('Received netif_fe_interface_status for unknown vif:
dom=%d vif=%d',
- self.getDomain(), vif)
- msg = packMsg('netif_fe_interface_status_t',
- { 'handle' : -1,
- 'status' : NETIF_INTERFACE_STATUS_CLOSED,
- });
- self.channel.writeResponse(msg)
- return True
-
- def recv_fe_interface_connect(self, msg):
- val = unpackMsg('netif_fe_interface_connect_t', msg)
- vif = val['handle']
- dev = self.getDevice(vif)
- if dev:
- dev.recv_fe_interface_connect(val)
- else:
- log.error('Received netif_fe_interface_connect for unknown vif:
dom=%d vif=%d',
- self.getDomain(), vif)
-
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/server/tpmif.py
--- a/tools/python/xen/xend/server/tpmif.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/server/tpmif.py Wed Sep 7 18:28:04 2005
@@ -13,9 +13,7 @@
from xen.xend.XendRoot import get_component
from xen.xend.xenstore import DBVar
-from xen.xend.server import channel
-from xen.xend.server.controller import CtrlMsgRcvr, Dev, DevController
-from xen.xend.server.messages import *
+from xen.xend.server.controller import Dev, DevController
class TPMifController(DevController):
"""TPM interface controller. Handles all TPM devices for a domain.
@@ -23,20 +21,15 @@
def __init__(self, vm, recreate=False):
DevController.__init__(self, vm, recreate=recreate)
- self.rcvr = None
- self.channel = None
def initController(self, recreate=False, reboot=False):
self.destroyed = False
- self.channel = self.getChannel()
def destroyController(self, reboot=False):
"""Destroy the controller and all devices.
"""
self.destroyed = True
self.destroyDevices(reboot=reboot)
- if self.rcvr:
- self.rcvr.deregisterChannel()
def sxpr(self):
val = ['tpmif', ['dom', self.getDomain()]]
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/server/usbif.py
--- a/tools/python/xen/xend/server/usbif.py Wed Sep 7 17:43:56 2005
+++ b/tools/python/xen/xend/server/usbif.py Wed Sep 7 18:28:04 2005
@@ -9,9 +9,7 @@
from xen.xend.XendError import XendError
from xen.xend.xenstore import DBVar
-from xen.xend.server import channel
from xen.xend.server.controller import Dev, DevController
-from xen.xend.server.messages import *
class UsbBackend:
"""Handler for the 'back-end' channel to a USB device driver domain
@@ -25,39 +23,15 @@
self.connecting = False
self.frontendDomain = self.controller.getDomain()
self.backendDomain = dom
- self.frontendChannel = None
- self.backendChannel = None
def init(self, recreate=False, reboot=False):
- self.frontendChannel = self.controller.getChannel()
- cf = channel.channelFactory()
- self.backendChannel = cf.openChannel(self.backendDomain)
-
+ pass
+
def __str__(self):
return ('<UsbifBackend frontend=%d backend=%d id=%d>'
% (self.frontendDomain,
self.backendDomain,
self.id))
-
- def closeEvtchn(self):
- if self.evtchn:
- channel.eventChannelClose(self.evtchn)
- self.evtchn = None
-
- def openEvtchn(self):
- self.evtchn = channel.eventChannel(self.backendDomain,
self.frontendDomain)
-
- def getEventChannelBackend(self):
- val = 0
- if self.evtchn:
- val = self.evtchn['port1']
- return val
-
- def getEventChannelFrontend(self):
- val = 0
- if self.evtchn:
- val = self.evtchn['port2']
- return val
def connect(self, recreate=False):
"""Connect the controller to the usbif control interface.
@@ -67,78 +41,14 @@
log.debug("Connecting usbif %s", str(self))
if recreate or self.connected or self.connecting:
pass
- else:
- self.send_be_create()
- def send_be_create(self):
- msg = packMsg('usbif_be_create_t',
- { 'domid' : self.frontendDomain })
- msg = self.backendChannel.requestResponse(msg)
- val = unpackMsg('usbif_be_create_t', msg)
- log.debug('>UsbifBackendController>respond_be_create> %s', str(val))
- self.connected = True
-
def destroy(self, reboot=False):
"""Disconnect from the usbif control interface and destroy it.
"""
self.destroyed = True
- self.send_be_disconnect()
- self.send_be_destroy()
- self.closeEvtchn()
- def send_be_disconnect(self):
- log.debug('>UsbifBackendController>send_be_disconnect> %s', str(self))
- msg = packMsg('usbif_be_disconnect_t',
- { 'domid' : self.frontendDomain })
- self.backendChannel.requestResponse(msg)
-
- def send_be_destroy(self, response=None):
- log.debug('>UsbifBackendController>send_be_destroy> %s', str(self))
- msg = packMsg('usbif_be_destroy_t',
- { 'domid' : self.frontendDomain })
- self.backendChannel.requestResponse(msg)
- #todo: check return status
-
-
- def connectInterface(self, val):
- self.openEvtchn()
- log.debug(">UsbifBackendController>connectInterface> connecting usbif
to event channel %s ports=%d:%d",
- str(self),
- self.getEventChannelBackend(),
- self.getEventChannelFrontend())
- msg = packMsg('usbif_be_connect_t',
- { 'domid' : self.frontendDomain,
- 'evtchn' : self.getEventChannelBackend(),
- 'shmem_frame' : val['shmem_frame'],
- 'bandwidth' : 500 # XXX fix bandwidth!
- })
- msg = self.backendChannel.requestResponse(msg)
- self.respond_be_connect(msg)
-
- def respond_be_connect(self, msg):
- """Response handler for a be_connect message.
-
- @param msg: message
- @type msg: xu message
- """
- val = unpackMsg('usbif_be_connect_t', msg)
- log.debug('>UsbifBackendController>respond_be_connect> %s, %s',
str(self), str(val))
- self.send_fe_interface_status_changed()
- log.debug(">UsbifBackendController> Successfully connected USB
interface for domain %d" % self.frontendDomain)
- self.controller.claim_ports()
-
- def send_fe_interface_status_changed(self):
- msg = packMsg('usbif_fe_interface_status_changed_t',
- { 'status' : USBIF_INTERFACE_STATUS_CONNECTED,
- 'domid' : self.backendDomain,
- 'evtchn' : self.getEventChannelFrontend(),
- 'bandwidth' : 500,
- 'num_ports' : len(self.controller.devices)
- })
- self.frontendChannel.writeRequest(msg)
-
def interfaceChanged(self):
- self.send_fe_interface_status_changed()
+ pass
class UsbDev(Dev):
@@ -153,17 +63,12 @@
self.port = id
self.path = None
self.frontendDomain = self.getDomain()
- self.frontendChannel = None
self.backendDomain = 0
- self.backendChannel = None
self.configure(self.config, recreate=recreate)
def init(self, recreate=False, reboot=False):
self.destroyed = False
self.frontendDomain = self.getDomain()
- self.frontendChannel = self.getChannel()
- backend = self.getBackend()
- self.backendChannel = backend.backendChannel
def configure(self, config, change=False, recreate=False):
if change:
@@ -204,7 +109,6 @@
"""
self.destroyed = True
log.debug("Destroying usb domain=%d id=%s", self.frontendDomain,
self.id)
- self.send_be_release_port()
if change:
self.interfaceChanged()
@@ -220,27 +124,6 @@
"""
self.getBackend().connect()
- def send_be_claim_port(self):
- log.debug(">UsbifBackendController>send_be_claim_port> about to claim
port %s" % self.path)
- msg = packMsg('usbif_be_claim_port_t',
- { 'domid' : self.frontendDomain,
- 'path' : self.path,
- 'usbif_port' : self.port,
- 'status' : 0})
- self.backendChannel.writeRequest(msg)
- log.debug(">UsbifBackendController> Claim port completed")
- # No need to add any callbacks, since the guest polls its virtual ports
- # anyhow, somewhat like a UHCI controller ;-)
-
- def send_be_release_port(self):
- msg = packMsg('usbif_be_release_port_t',
- { 'domid' : self.frontendDomain,
- 'path' : self.path })
- self.backendChannel.writeRequest(msg)
- log.debug(">UsbifBackendController> Release port completed")
- # No need to add any callbacks, since the guest polls its virtual ports
- # anyhow, somewhat like a UHCI controller ;-)
-
class UsbifController(DevController):
"""USB device interface controller. Handles all USB devices
for a domain.
@@ -252,18 +135,9 @@
DevController.__init__(self, vm, recreate=recreate)
self.backends = {}
self.backendId = 0
- self.rcvr = None
def init(self, recreate=False, reboot=False):
self.destroyed = False
- self.rcvr = CtrlMsgRcvr(self.getChannel())
- self.rcvr.addHandler(CMSG_USBIF_FE,
- CMSG_USBIF_FE_DRIVER_STATUS_CHANGED,
- self.recv_fe_driver_status_changed)
- self.rcvr.addHandler(CMSG_USBIF_FE,
- CMSG_USBIF_FE_INTERFACE_CONNECT,
- self.recv_fe_interface_connect)
- self.rcvr.registerChannel()
if reboot:
self.rebootBackends()
self.rebootDevices()
@@ -283,8 +157,6 @@
log.debug("Destroying blkif domain=%d", self.getDomain())
self.destroyDevices(reboot=reboot)
self.destroyBackends(reboot=reboot)
- if self.rcvr:
- self.rcvr.deregisterChannel()
def rebootBackends(self):
for backend in self.backends.values():
@@ -311,40 +183,3 @@
def destroyBackends(self, reboot=False):
for backend in self.backends.values():
backend.destroy(reboot=reboot)
-
- def recv_fe_driver_status_changed(self, msg):
- val = unpackMsg('usbif_fe_driver_status_changed_t', msg)
- log.debug('>UsbifController>recv_fe_driver_status_changed> %s',
str(val))
- #todo: FIXME: For each backend?
- msg = packMsg('usbif_fe_interface_status_changed_t',
- { 'status' : USBIF_INTERFACE_STATUS_DISCONNECTED,
- 'domid' : 0, #todo: FIXME: should be domid of backend
- 'evtchn' : 0 })
- msg = self.getChannel().requestResponse(msg)
- self.disconnected_resp(msg)
-
- def disconnected_resp(self, msg):
- val = unpackMsg('usbif_fe_interface_status_changed_t', msg)
- if val['status'] != USBIF_INTERFACE_STATUS_DISCONNECTED:
- log.error(">UsbifController>disconnected_resp> unexpected status
change")
- else:
- log.debug(">UsbifController>disconnected_resp> interface
disconnected OK")
-
- def recv_fe_interface_connect(self, msg):
- val = unpackMsg('usbif_fe_interface_status_changed_t', msg)
- log.debug(">UsbifController>recv_fe_interface_connect> notifying
backend")
- #todo: FIXME: generalise to more than one backend.
- id = 0
- backend = self.getBackendById(id)
- if backend:
- try:
- backend.connectInterface(val)
- except IOError, ex:
- log.error("Exception connecting backend: %s", ex)
- else:
- log.error('interface connect on unknown interface: id=%d', id)
-
- def claim_ports(self):
- for dev in self.devices.values():
- dev.send_be_claim_port()
-
diff -r 549f4256ab3c -r 0e2b1e04d4cb tools/python/xen/xend/server/messages.py
--- a/tools/python/xen/xend/server/messages.py Wed Sep 7 17:43:56 2005
+++ /dev/null Wed Sep 7 18:28:04 2005
@@ -1,462 +0,0 @@
-#============================================================================
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of version 2.1 of the GNU Lesser General Public
-# License as published by the Free Software Foundation.
-#
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# Lesser General Public License for more details.
-#
-# You should have received a copy of the GNU Lesser General Public
-# License along with this library; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-#============================================================================
-# Copyright (C) 2004, 2005 Mike Wray <mike.wray@xxxxxx>
-#============================================================================
-
-import sys
-import struct
-import types
-
-from xen.lowlevel import xu
-
-DEBUG = False
-
-#PORT_WILDCARD = 0xefffffff
-
-"""Wildcard for the control message types."""
-TYPE_WILDCARD = 0xffff
-
-""" All message formats.
-Added to incrementally for the various message types.
-See below.
-"""
-msg_formats = {}
-
-#============================================================================
-# Block interface message types.
-#============================================================================
-
-CMSG_BLKIF_BE = 1
-CMSG_BLKIF_FE = 2
-
-CMSG_BLKIF_FE_INTERFACE_STATUS = 0
-CMSG_BLKIF_FE_DRIVER_STATUS = 32
-CMSG_BLKIF_FE_INTERFACE_CONNECT = 33
-CMSG_BLKIF_FE_INTERFACE_DISCONNECT = 34
-CMSG_BLKIF_FE_INTERFACE_QUERY = 35
-
-CMSG_BLKIF_BE_CREATE = 0
-CMSG_BLKIF_BE_DESTROY = 1
-CMSG_BLKIF_BE_CONNECT = 2
-CMSG_BLKIF_BE_DISCONNECT = 3
-CMSG_BLKIF_BE_VBD_CREATE = 4
-CMSG_BLKIF_BE_VBD_DESTROY = 5
-CMSG_BLKIF_BE_DRIVER_STATUS = 32
-
-BLKIF_DRIVER_STATUS_DOWN = 0
-BLKIF_DRIVER_STATUS_UP = 1
-
-BLKIF_INTERFACE_STATUS_CLOSED = 0 #/* Interface doesn't exist. */
-BLKIF_INTERFACE_STATUS_DISCONNECTED = 1 #/* Exists but is disconnected. */
-BLKIF_INTERFACE_STATUS_CONNECTED = 2 #/* Exists and is connected. */
-BLKIF_INTERFACE_STATUS_CHANGED = 3 #/* A device has been added or
removed. */
-
-BLKIF_BE_STATUS_OKAY = 0
-BLKIF_BE_STATUS_ERROR = 1
-BLKIF_BE_STATUS_INTERFACE_EXISTS = 2
-BLKIF_BE_STATUS_INTERFACE_NOT_FOUND = 3
-BLKIF_BE_STATUS_INTERFACE_CONNECTED = 4
-BLKIF_BE_STATUS_VBD_EXISTS = 5
-BLKIF_BE_STATUS_VBD_NOT_FOUND = 6
-BLKIF_BE_STATUS_OUT_OF_MEMORY = 7
-BLKIF_BE_STATUS_PHYSDEV_NOT_FOUND = 8
-BLKIF_BE_STATUS_MAPPING_ERROR = 9
-
-blkif_formats = {
- 'blkif_be_connect_t':
- (CMSG_BLKIF_BE, CMSG_BLKIF_BE_CONNECT),
- # Connect be to fe (in response to blkif_fe_interface_connect_t).
-
- 'blkif_be_create_t':
- (CMSG_BLKIF_BE, CMSG_BLKIF_BE_CREATE),
- # Create be.
-
- 'blkif_be_disconnect_t':
- (CMSG_BLKIF_BE, CMSG_BLKIF_BE_DISCONNECT),
- # Disconnect be from fe.
-
- 'blkif_be_destroy_t':
- (CMSG_BLKIF_BE, CMSG_BLKIF_BE_DESTROY),
- # Destroy be (after disconnect).
- # Make be do this even if no disconnect (and destroy all vbd too).
-
- 'blkif_be_vbd_create_t':
- (CMSG_BLKIF_BE, CMSG_BLKIF_BE_VBD_CREATE),
- # Create a vbd device.
-
- 'blkif_be_vbd_destroy_t':
- (CMSG_BLKIF_BE, CMSG_BLKIF_BE_VBD_DESTROY),
- # Destroy a vbd.
-
- # Add message to query be for state and vbds.
-
- 'blkif_fe_interface_status_t':
- (CMSG_BLKIF_FE, CMSG_BLKIF_FE_INTERFACE_STATUS),
- # Notify device status to fe.
- # Also used to notify 'any' device change with status
BLKIF_INTERFACE_STATUS_CHANGED.
-
- 'blkif_fe_driver_status_t':
- (CMSG_BLKIF_FE, CMSG_BLKIF_FE_DRIVER_STATUS),
- # Comes from fe, treated as notifying that fe has come up/changed.
- # Xend sets be(s) to BLKIF_INTERFACE_STATUS_DISCONNECTED,
- # sends blkif_fe_interface_status_t to fe (from each be).
- #
- # Reply with i/f count.
- # The i/f sends probes (using -ve trick), we reply with the info.
-
- 'blkif_fe_interface_connect_t':
- (CMSG_BLKIF_FE, CMSG_BLKIF_FE_INTERFACE_CONNECT),
- # Comes from fe, passing shmem frame to use for be.
- # fe sends when gets blkif_fe_interface_status_t with state
NETIF_INTERFACE_STATUS_DISCONNECTED.
- # Xend creates event channel and notifies be.
- # Then notifies fe of event channel with blkif_fe_interface_status_t.
-
- # Add message to kick fe to probe for devices.
- # Just report new devices to fe?
-
- #
- # Add message for fe to probe a device.
- # And probing with id -1 should return first.
- # And probing with id -n should return first device with id > n.
-
- # Add message to query fe for state and vbds.
-}
-
-msg_formats.update(blkif_formats)
-
-#============================================================================
-# Network interface message types.
-#============================================================================
-
-CMSG_NETIF_BE = 3
-CMSG_NETIF_FE = 4
-
-CMSG_NETIF_FE_INTERFACE_STATUS = 0
-CMSG_NETIF_FE_DRIVER_STATUS = 32
-CMSG_NETIF_FE_INTERFACE_CONNECT = 33
-CMSG_NETIF_FE_INTERFACE_DISCONNECT = 34
-CMSG_NETIF_FE_INTERFACE_QUERY = 35
-
-CMSG_NETIF_BE_CREATE = 0
-CMSG_NETIF_BE_DESTROY = 1
-CMSG_NETIF_BE_CONNECT = 2
-CMSG_NETIF_BE_DISCONNECT = 3
-CMSG_NETIF_BE_CREDITLIMIT = 4
-CMSG_NETIF_BE_DRIVER_STATUS = 32
-
-NETIF_INTERFACE_STATUS_CLOSED = 0 #/* Interface doesn't exist. */
-NETIF_INTERFACE_STATUS_DISCONNECTED = 1 #/* Exists but is disconnected. */
-NETIF_INTERFACE_STATUS_CONNECTED = 2 #/* Exists and is connected. */
-NETIF_INTERFACE_STATUS_CHANGED = 3 #/* A device has been added or
removed. */
-
-NETIF_DRIVER_STATUS_DOWN = 0
-NETIF_DRIVER_STATUS_UP = 1
-
-netif_formats = {
- 'netif_be_connect_t':
- (CMSG_NETIF_BE, CMSG_NETIF_BE_CONNECT),
-
- 'netif_be_create_t':
- (CMSG_NETIF_BE, CMSG_NETIF_BE_CREATE),
-
- 'netif_be_disconnect_t':
- (CMSG_NETIF_BE, CMSG_NETIF_BE_DISCONNECT),
-
- 'netif_be_destroy_t':
- (CMSG_NETIF_BE, CMSG_NETIF_BE_DESTROY),
-
- 'netif_be_creditlimit_t':
- (CMSG_NETIF_BE, CMSG_NETIF_BE_CREDITLIMIT),
-
- 'netif_be_driver_status_t':
- (CMSG_NETIF_BE, CMSG_NETIF_BE_DRIVER_STATUS),
-
- 'netif_fe_driver_status_t':
- (CMSG_NETIF_FE, CMSG_NETIF_FE_DRIVER_STATUS),
-
- 'netif_fe_interface_connect_t':
- (CMSG_NETIF_FE, CMSG_NETIF_FE_INTERFACE_CONNECT),
-
- 'netif_fe_interface_status_t':
- (CMSG_NETIF_FE, CMSG_NETIF_FE_INTERFACE_STATUS),
- }
-
-msg_formats.update(netif_formats)
-
-#============================================================================
-# USB interface message types.
-#============================================================================
-
-CMSG_USBIF_BE = 8
-CMSG_USBIF_FE = 9
-
-CMSG_USBIF_FE_INTERFACE_STATUS_CHANGED = 0
-
-CMSG_USBIF_FE_DRIVER_STATUS_CHANGED = 32
-CMSG_USBIF_FE_INTERFACE_CONNECT = 33
-CMSG_USBIF_FE_INTERFACE_DISCONNECT = 34
-
-USBIF_DRIVER_STATUS_DOWN = 0
-USBIF_DRIVER_STATUS_UP = 1
-
-USBIF_INTERFACE_STATUS_DESTROYED = 0 #/* Interface doesn't exist. */
-USBIF_INTERFACE_STATUS_DISCONNECTED = 1 #/* Exists but is disconnected. */
-USBIF_INTERFACE_STATUS_CONNECTED = 2 #/* Exists and is connected. */
-
-CMSG_USBIF_BE_CREATE = 0
-CMSG_USBIF_BE_DESTROY = 1
-CMSG_USBIF_BE_CONNECT = 2
-
-CMSG_USBIF_BE_DISCONNECT = 3
-CMSG_USBIF_BE_CLAIM_PORT = 4
-CMSG_USBIF_BE_RELEASE_PORT = 5
-
-CMSG_USBIF_BE_DRIVER_STATUS_CHANGED = 32
-
-USBIF_BE_STATUS_OKAY = 0
-USBIF_BE_STATUS_ERROR = 1
-
-USBIF_BE_STATUS_INTERFACE_EXISTS = 2
-USBIF_BE_STATUS_INTERFACE_NOT_FOUND = 3
-USBIF_BE_STATUS_INTERFACE_CONNECTED = 4
-USBIF_BE_STATUS_OUT_OF_MEMORY = 7
-USBIF_BE_STATUS_MAPPING_ERROR = 9
-
-usbif_formats = {
- 'usbif_be_create_t':
- (CMSG_USBIF_BE, CMSG_USBIF_BE_CREATE),
-
- 'usbif_be_destroy_t':
- (CMSG_USBIF_BE, CMSG_USBIF_BE_DESTROY),
-
- 'usbif_be_connect_t':
- (CMSG_USBIF_BE, CMSG_USBIF_BE_CONNECT),
-
- 'usbif_be_disconnect_t':
- (CMSG_USBIF_BE, CMSG_USBIF_BE_DISCONNECT),
-
- 'usbif_be_claim_port_t':
- (CMSG_USBIF_BE, CMSG_USBIF_BE_CLAIM_PORT),
-
- 'usbif_be_release_port_t':
- (CMSG_USBIF_BE, CMSG_USBIF_BE_RELEASE_PORT),
-
- 'usbif_fe_interface_status_changed_t':
- (CMSG_USBIF_FE, CMSG_USBIF_FE_INTERFACE_STATUS_CHANGED),
-
- 'usbif_fe_driver_status_changed_t':
- (CMSG_USBIF_FE, CMSG_USBIF_FE_DRIVER_STATUS_CHANGED),
-
- 'usbif_fe_interface_connect_t':
- (CMSG_USBIF_FE, CMSG_USBIF_FE_INTERFACE_CONNECT),
-
- 'usbif_fe_interface_disconnect_t':
- (CMSG_USBIF_FE, CMSG_USBIF_FE_INTERFACE_DISCONNECT),
-
- }
-
-msg_formats.update(usbif_formats)
-
-#============================================================================
-# Domain shutdown message types.
-#============================================================================
-
-CMSG_SHUTDOWN = 6
-
-CMSG_SHUTDOWN_POWEROFF = 0
-CMSG_SHUTDOWN_REBOOT = 1
-CMSG_SHUTDOWN_SUSPEND = 2
-CMSG_SHUTDOWN_SYSRQ = 3
-
-STOPCODE_shutdown = 0
-STOPCODE_reboot = 1
-STOPCODE_suspend = 2
-STOPCODE_sysrq = 3
-
-shutdown_formats = {
- 'shutdown_poweroff_t':
- (CMSG_SHUTDOWN, CMSG_SHUTDOWN_POWEROFF),
-
- 'shutdown_reboot_t':
- (CMSG_SHUTDOWN, CMSG_SHUTDOWN_REBOOT),
-
- 'shutdown_suspend_t':
- (CMSG_SHUTDOWN, CMSG_SHUTDOWN_SUSPEND),
-
- 'shutdown_sysrq_t':
- (CMSG_SHUTDOWN, CMSG_SHUTDOWN_SYSRQ)
- }
-
-msg_formats.update(shutdown_formats)
-
-#============================================================================
-# Domain memory reservation message.
-#============================================================================
-
-CMSG_MEM_REQUEST = 7
-CMSG_MEM_REQUEST_SET = 0
-
-mem_request_formats = {
- 'mem_request_t':
- (CMSG_MEM_REQUEST, CMSG_MEM_REQUEST_SET)
- }
-
-msg_formats.update(mem_request_formats)
-
-#============================================================================
-# Domain vcpu hotplug message.
-#============================================================================
-
-CMSG_VCPU_HOTPLUG = 10
-CMSG_VCPU_HOTPLUG_OFF = 0
-CMSG_VCPU_HOTPLUG_ON = 1
-
-vcpu_hotplug_formats = {
- 'vcpu_hotplug_off_t':
- (CMSG_VCPU_HOTPLUG, CMSG_VCPU_HOTPLUG_OFF),
-
- 'vcpu_hotplug_on_t':
- (CMSG_VCPU_HOTPLUG, CMSG_VCPU_HOTPLUG_ON)
- }
-
-msg_formats.update(vcpu_hotplug_formats)
-
-#============================================================================
-class Msg:
- pass
-
-_next_msgid = 0
-
-def nextid():
- """Generate the next message id.
-
- @return: message id
- @rtype: int
- """
- global _next_msgid
- _next_msgid += 1
- return _next_msgid
-
-def packMsg(ty, params):
- """Pack a message.
- Any I{mac} parameter is passed in as an int[6] array and converted.
-
- @param ty: message type name
- @type ty: string
- @param params: message parameters
- @type params: dicy
- @return: message
- @rtype: xu message
- """
- msgid = nextid()
- if DEBUG: print '>packMsg', msgid, ty, params
- (major, minor) = msg_formats[ty]
- args = {}
- for (k, v) in params.items():
- if k in ['mac', 'be_mac']:
- for i in range(0, 6):
- args['%s[%d]' % (k, i)] = v[i]
- else:
- args[k] = v
- msg = xu.message(major, minor, msgid, args)
- if DEBUG: print '<packMsg', msg.get_header()['id'], ty, args
- return msg
-
-def unpackMsg(ty, msg):
- """Unpack a message.
- Any mac addresses in the message are converted to int[6] array
- in the return dict.
-
- @param ty: message type
- @type ty: string
- @param msg: message
- @type msg: xu message
- @return: parameters
- @rtype: dict
- """
- args = msg.get_payload()
- if DEBUG: print '>unpackMsg', args
- if isinstance(args, types.StringType):
- args = {'value': args}
- else:
- mac = [0, 0, 0, 0, 0, 0]
- macs = []
- for (k, v) in args.items():
- if k.startswith('mac['):
- macs.append(k)
- i = int(k[4:5])
- mac[i] = v
- else:
- pass
- if macs:
- args['mac'] = mac
- #print 'macs=', macs
- #print 'args=', args
- for k in macs:
- del args[k]
- if DEBUG:
- msgid = msg.get_header()['id']
- print '<unpackMsg', msgid, ty, args
- return args
-
-def msgTypeName(ty, subty):
- """Convert a message type, subtype pair to a message type name.
-
- @param ty: message type
- @type ty: int
- @param subty: message subtype
- @type ty: int
- @return: message type name (or None)
- @rtype: string or None
- """
- for (name, info) in msg_formats.items():
- if info[0] == ty and info[1] == subty:
- return name
- return None
-
-def printMsg(msg, out=sys.stdout, all=False):
- """Print a message.
-
- @param msg: message
- @type msg: xu message
- @param out: where to print to
- @type out: stream
- @param all: print payload if true
- @type all: bool
- """
- hdr = msg.get_header()
- major = hdr['type']
- minor = hdr['subtype']
- msgid = hdr['id']
- ty = msgTypeName(major, minor)
- print >>out, 'message:', 'type=', ty, '%d:%d' % (major, minor), 'id=%d' %
msgid
- if all:
- print >>out, 'payload=', msg.get_payload()
-
-
-def getMessageType(msg):
- """Get a 2-tuple of the message type and subtype.
-
- @param msg: message
- @type msg: xu message
- @return: type info
- @rtype: (int, int)
- """
- hdr = msg.get_header()
- return (hdr['type'], hdr.get('subtype'))
-
-def getMessageId(msg):
- hdr = msg.get_header()
- return hdr['id']
_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog
|
Home