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https://gitlab.com/libvirt/libvirt.git
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77780a29ed
This reverts commit2841e675. It turns out that adding the host_mtu field to the PCI capabilities in the guest bumps the length of PCI capabilities beyond the 32 byte boundary, so the virtio-net device gets 64 bytes of ioport space instead of 32, which offsets the address of all the other following devices. Migration doesn't work very well when the location and length of PCI capabilities of devices is changed between source and destination. This means that we need to make sure that the absence/presence of host_mtu on the qemu commandline always matches between source and destination, which means that we need to make setting of host_mtu an opt-in thing (it can't happen automatically when the bridge being used has a non-default MTU, which is what commit2841e675implemented). I do want to re-implement this feature with an <mtu auto='on'/> setting, but probably won't backport that to any stable branches, so I'm first reverting the original commit, and that revert can be pushed to the few releases that have been made since the original (3.1.0 - 3.3.0) Resolves: https://bugzilla.redhat.com/1449346
209 lines
7.8 KiB
C
209 lines
7.8 KiB
C
/*
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* qemu_command.h: QEMU command generation
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*
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* Copyright (C) 2006-2016 Red Hat, Inc.
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* Copyright (C) 2006 Daniel P. Berrange
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#ifndef __QEMU_COMMAND_H__
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# define __QEMU_COMMAND_H__
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# include "domain_addr.h"
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# include "domain_conf.h"
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# include "vircommand.h"
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# include "capabilities.h"
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# include "qemu_conf.h"
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# include "qemu_domain.h"
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# include "qemu_domain_address.h"
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# include "qemu_capabilities.h"
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# include "logging/log_manager.h"
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/* Config type for XML import/export conversions */
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# define QEMU_CONFIG_FORMAT_ARGV "qemu-argv"
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# define QEMU_FSDEV_HOST_PREFIX "fsdev-"
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# define QEMU_BLOCK_IOTUNE_MAX 1000000000000000LL
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VIR_ENUM_DECL(qemuVideo)
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virCommandPtr qemuBuildCommandLine(virQEMUDriverPtr driver,
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virLogManagerPtr logManager,
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virDomainDefPtr def,
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virDomainChrSourceDefPtr monitor_chr,
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bool monitor_json,
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virQEMUCapsPtr qemuCaps,
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const char *migrateURI,
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virDomainSnapshotObjPtr snapshot,
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virNetDevVPortProfileOp vmop,
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bool standalone,
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bool enableFips,
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virBitmapPtr nodeset,
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size_t *nnicindexes,
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int **nicindexes,
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const char *domainLibDir)
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ATTRIBUTE_NONNULL(15);
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/* Generate the object properties for a secret */
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int qemuBuildSecretInfoProps(qemuDomainSecretInfoPtr secinfo,
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virJSONValuePtr *propsret);
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/* Generate the object properties for a tls-creds-x509 */
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int qemuBuildTLSx509BackendProps(const char *tlspath,
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bool isListen,
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bool verifypeer,
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const char *secalias,
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virQEMUCapsPtr qemuCaps,
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virJSONValuePtr *propsret);
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/* Generate '-device' string for chardev device */
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int
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qemuBuildChrDeviceStr(char **deviceStr,
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const virDomainDef *vmdef,
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virDomainChrDefPtr chr,
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virQEMUCapsPtr qemuCaps);
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/* With vlan == -1, use netdev syntax, else old hostnet */
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char *qemuBuildHostNetStr(virDomainNetDefPtr net,
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virQEMUDriverPtr driver,
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char type_sep,
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int vlan,
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char **tapfd,
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size_t tapfdSize,
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char **vhostfd,
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size_t vhostfdSize);
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/* Legacy, pre device support */
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char *qemuBuildNicStr(virDomainNetDefPtr net,
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const char *prefix,
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int vlan);
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/* Current, best practice */
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char *qemuBuildNicDevStr(virDomainDefPtr def,
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virDomainNetDefPtr net,
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int vlan,
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unsigned int bootindex,
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size_t vhostfdSize,
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virQEMUCapsPtr qemuCaps);
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char *qemuDeviceDriveHostAlias(virDomainDiskDefPtr disk);
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/* Both legacy & current support */
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char *qemuBuildDriveStr(virDomainDiskDefPtr disk,
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virQEMUDriverConfigPtr cfg,
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bool bootable,
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virQEMUCapsPtr qemuCaps);
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/* Current, best practice */
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char *qemuBuildDriveDevStr(const virDomainDef *def,
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virDomainDiskDefPtr disk,
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unsigned int bootindex,
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virQEMUCapsPtr qemuCaps);
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/* Current, best practice */
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char *qemuBuildControllerDevStr(const virDomainDef *domainDef,
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virDomainControllerDefPtr def,
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virQEMUCapsPtr qemuCaps,
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int *nusbcontroller);
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int qemuBuildMemoryBackendStr(virJSONValuePtr *backendProps,
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const char **backendType,
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virQEMUDriverConfigPtr cfg,
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virQEMUCapsPtr qemuCaps,
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virDomainDefPtr def,
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virDomainMemoryDefPtr mem,
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virBitmapPtr autoNodeset,
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bool force);
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char *qemuBuildMemoryDeviceStr(virDomainMemoryDefPtr mem);
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/* Current, best practice */
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char *qemuBuildPCIHostdevDevStr(const virDomainDef *def,
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virDomainHostdevDefPtr dev,
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unsigned int bootIndex,
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const char *configfd,
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virQEMUCapsPtr qemuCaps);
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char *qemuBuildRNGDevStr(const virDomainDef *def,
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virDomainRNGDefPtr dev,
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virQEMUCapsPtr qemuCaps);
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int qemuBuildRNGBackendProps(virDomainRNGDefPtr rng,
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virQEMUCapsPtr qemuCaps,
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const char **type,
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virJSONValuePtr *props);
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int qemuOpenPCIConfig(virDomainHostdevDefPtr dev);
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/* Current, best practice */
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char *qemuBuildUSBHostdevDevStr(const virDomainDef *def,
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virDomainHostdevDefPtr dev,
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virQEMUCapsPtr qemuCaps);
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char *qemuBuildSCSIHostdevDrvStr(virDomainHostdevDefPtr dev);
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char *qemuBuildSCSIHostdevDevStr(const virDomainDef *def,
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virDomainHostdevDefPtr dev,
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virQEMUCapsPtr qemuCaps);
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char *
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qemuBuildSCSIVHostHostdevDevStr(const virDomainDef *def,
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virDomainHostdevDefPtr dev,
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virQEMUCapsPtr qemuCaps,
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char *vhostfdName);
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char *
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qemuBuildHostdevMediatedDevStr(const virDomainDef *def,
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virDomainHostdevDefPtr dev,
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virQEMUCapsPtr qemuCaps);
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char *qemuBuildRedirdevDevStr(const virDomainDef *def,
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virDomainRedirdevDefPtr dev,
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virQEMUCapsPtr qemuCaps);
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int qemuNetworkPrepareDevices(virDomainDefPtr def);
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int qemuGetDriveSourceString(virStorageSourcePtr src,
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qemuDomainSecretInfoPtr secinfo,
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char **source);
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int qemuCheckDiskConfig(virDomainDiskDefPtr disk);
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bool
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qemuCheckFips(void);
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bool qemuCheckCCWS390AddressSupport(const virDomainDef *def,
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virDomainDeviceInfo info,
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virQEMUCapsPtr qemuCaps,
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const char *devicename);
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virJSONValuePtr qemuBuildHotpluggableCPUProps(const virDomainVcpuDef *vcpu)
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ATTRIBUTE_NONNULL(1);
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virJSONValuePtr qemuBuildShmemBackendMemProps(virDomainShmemDefPtr shmem)
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ATTRIBUTE_NONNULL(1);
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char *qemuBuildShmemDevStr(virDomainDefPtr def,
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virDomainShmemDefPtr shmem,
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virQEMUCapsPtr qemuCaps)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
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#endif /* __QEMU_COMMAND_H__*/
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