[libvirt] [PATCH v4 6/9] conf: Wire up the vhost-scsi connection from/to XML

With the QEMU components in place, provide the XML parsing to invoke that code when given the following XML snippet: <hostdev mode='subsystem' type='scsi_host'> <source protocol='vhost' wwpn='naa.501234567890abcd'/> </hostdev> An optional address element can be specified within the hostdev (pick CCW or PCI as necessary): <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0625'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> Signed-off-by: Eric Farman <farman(a)linux.vnet.ibm.com&gt; --- docs/schemas/domaincommon.rng | 23 +++++++++++ src/conf/domain_audit.c | 7 ++++ src/conf/domain_conf.c | 92 ++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 121 insertions(+), 1 deletion(-) diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index 19d45fd..bb903ef 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -3974,6 +3974,7 @@ <ref name="hostdevsubsyspci"/> <ref name="hostdevsubsysusb"/> <ref name="hostdevsubsysscsi"/> + <ref name="hostdevsubsyshost"/> </choice> </define> @@ -4102,6 +4103,28 @@ </element> </define> + <define name="hostdevsubsyshost"> + <attribute name="type"> + <value>scsi_host</value> + </attribute> + <element name="source"> + <choice> + <group> + <attribute name="protocol"> + <choice> + <value>vhost</value> <!-- vhost, required --> + </choice> + </attribute> + <attribute name="wwpn"> + <data type="string"> + <param name="pattern">(naa\.)[0-9a-fA-F]{16}</param> + </data> + </attribute> + </group> + </choice> + </element> + </define> + <define name="hostdevcapsstorage"> <attribute name="type"> <value>storage</value> diff --git a/src/conf/domain_audit.c b/src/conf/domain_audit.c index 2decf02..2d9ff5e 100644 --- a/src/conf/domain_audit.c +++ b/src/conf/domain_audit.c @@ -392,6 +392,7 @@ virDomainAuditHostdev(virDomainObjPtr vm, virDomainHostdevDefPtr hostdev, virDomainHostdevSubsysUSBPtr usbsrc = &hostdev->source.subsys.u.usb; virDomainHostdevSubsysPCIPtr pcisrc = &hostdev->source.subsys.u.pci; virDomainHostdevSubsysSCSIPtr scsisrc = &hostdev->source.subsys.u.scsi; + virDomainHostdevSubsysSCSIVHostPtr hostsrc = &hostdev->source.subsys.u.scsi_host; virUUIDFormat(vm->def->uuid, uuidstr); if (!(vmname = virAuditEncode("vm", vm->def->name))) { @@ -444,6 +445,12 @@ virDomainAuditHostdev(virDomainObjPtr vm, virDomainHostdevDefPtr hostdev, } break; } + case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST: + if (VIR_STRDUP_QUIET(address, hostsrc->wwpn) < 0) { + VIR_WARN("OOM while encoding audit message"); + goto cleanup; + } + break; default: VIR_WARN("Unexpected hostdev type while encoding audit message: %d", hostdev->source.subsys.type); diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 3a4123d..618a214 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -2323,6 +2323,9 @@ void virDomainHostdevDefClear(virDomainHostdevDefPtr def) } else { VIR_FREE(scsisrc->u.host.adapter); } + } else if (def->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST) { + virDomainHostdevSubsysSCSIVHostPtr hostsrc = &def->source.subsys.u.scsi_host; + VIR_FREE(hostsrc->wwpn); } break; } @@ -6094,6 +6097,58 @@ virDomainHostdevSubsysSCSIDefParseXML(xmlNodePtr sourcenode, return ret; } +static int +virDomainHostdevSubsysSCSIVHostDefParseXML(xmlNodePtr sourcenode, + virDomainHostdevDefPtr def) +{ + char *protocol = NULL; + virDomainHostdevSubsysSCSIVHostPtr hostsrc = &def->source.subsys.u.scsi_host; + + if (!(protocol = virXMLPropString(sourcenode, "protocol"))) { + virReportError(VIR_ERR_XML_ERROR, "%s", + _("Missing scsi_host subsystem protocol")); + return -1; + } + + if ((hostsrc->protocol = + virDomainHostdevSubsysSCSIHostProtocolTypeFromString(protocol)) <= 0) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("Unknown scsi_host subsystem protocol '%s'"), + protocol); + goto cleanup; + } + + switch ((virDomainHostdevSubsysSCSIHostProtocolType) hostsrc->protocol) { + case VIR_DOMAIN_HOSTDEV_SUBSYS_SCSI_HOST_PROTOCOL_TYPE_VHOST: + if (!(hostsrc->wwpn = virXMLPropString(sourcenode, "wwpn"))) { + virReportError(VIR_ERR_XML_ERROR, "%s", + _("missing vhost-scsi hostdev source wwpn")); + goto cleanup; + } + + if (!STRPREFIX(hostsrc->wwpn, "naa.") || + !virValidateWWN(hostsrc->wwpn + 4)) { + virReportError(VIR_ERR_XML_ERROR, "%s", _("malformed 'wwpn' value")); + goto cleanup; + } + break; + case VIR_DOMAIN_HOSTDEV_SUBSYS_SCSI_HOST_PROTOCOL_TYPE_NONE: + case VIR_DOMAIN_HOSTDEV_SUBSYS_SCSI_HOST_PROTOCOL_TYPE_LAST: + virReportError(VIR_ERR_XML_ERROR, + _("Invalid hostdev protocol '%s'"), + virDomainHostdevSubsysSCSIHostProtocolTypeToString(hostsrc->protocol)); + goto cleanup; + break; + } + + return 0; + + cleanup: + VIR_FREE(hostsrc->wwpn); + VIR_FREE(protocol); + return -1; +} + static int virDomainHostdevDefParseXMLSubsys(xmlNodePtr node, @@ -6218,6 +6273,11 @@ virDomainHostdevDefParseXMLSubsys(xmlNodePtr node, goto error; break; + case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST: + if (virDomainHostdevSubsysSCSIVHostDefParseXML(sourcenode, def) < 0) + goto error; + break; + default: virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("address type='%s' not supported in hostdev interfaces"), @@ -13023,6 +13083,15 @@ virDomainHostdevDefParseXML(virDomainXMLOptionPtr xmlopt, def->shareable = true; break; case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST: + if (def->info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE && + def->info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI && + def->info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW) { + virReportError(VIR_ERR_XML_ERROR, "%s", + _("SCSI_host host device must use 'pci' " + "or 'ccw' address type")); + goto error; + } + break; case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB: case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_LAST: break; @@ -13907,7 +13976,14 @@ virDomainHostdevMatchSubsys(virDomainHostdevDefPtr a, else return virDomainHostdevMatchSubsysSCSIHost(a, b); case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST: - /* Fall through for now */ + if (a->source.subsys.u.scsi_host.protocol != + b->source.subsys.u.scsi_host.protocol) + return 0; + if (STREQ(a->source.subsys.u.scsi_host.wwpn, + b->source.subsys.u.scsi_host.wwpn)) + return 1; + else + return 0; case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_LAST: return 0; } @@ -20814,9 +20890,11 @@ virDomainHostdevDefFormatSubsys(virBufferPtr buf, unsigned int flags, bool includeTypeInAddr) { + bool closedSource = false; virDomainHostdevSubsysUSBPtr usbsrc = &def->source.subsys.u.usb; virDomainHostdevSubsysPCIPtr pcisrc = &def->source.subsys.u.pci; virDomainHostdevSubsysSCSIPtr scsisrc = &def->source.subsys.u.scsi; + virDomainHostdevSubsysSCSIVHostPtr hostsrc = &def->source.subsys.u.scsi_host; virDomainHostdevSubsysSCSIHostPtr scsihostsrc = &scsisrc->u.host; virDomainHostdevSubsysSCSIiSCSIPtr iscsisrc = &scsisrc->u.iscsi; @@ -20857,6 +20935,15 @@ virDomainHostdevDefFormatSubsys(virBufferPtr buf, protocol, iscsisrc->path); } + if (def->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST) { + const char *protocol = + virDomainHostdevSubsysSCSIHostProtocolTypeToString(hostsrc->protocol); + closedSource = true; + + virBufferAsprintf(buf, " protocol='%s' wwpn='%s'/", + protocol, hostsrc->wwpn); + } + virBufferAddLit(buf, ">\n"); virBufferAdjustIndent(buf, 2); @@ -20910,6 +20997,8 @@ virDomainHostdevDefFormatSubsys(virBufferPtr buf, scsihostsrc->unit); } break; + case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST: + break; default: virReportError(VIR_ERR_INTERNAL_ERROR, _("unexpected hostdev type %d"), @@ -20925,6 +21014,7 @@ virDomainHostdevDefFormatSubsys(virBufferPtr buf, } virBufferAdjustIndent(buf, -2); + if (!closedSource) virBufferAddLit(buf, "</source>\n"); return 0; -- 1.9.1