[libvirt] [PATCH v2 11/11] conf: Add VIR_DOMAIN_DEF_FEATURE_NET_MODEL_STRING

[Cole Robinson]

On 4/16/19 11:26 AM, Michal Privoznik wrote:
> On 3/13/19 4:51 PM, Cole Robinson wrote:
>> This requires drivers to opt in to handle the raw modelstr
>> network model, all others will error if a passed in XML value
>> is not in the model enum.
>>
>> Enable this feature for libxl/xen/xm and qemu drivers
>>
>> Signed-off-by: Cole Robinson <crobinso at redhat.com>
>> ---
>>   src/conf/domain_conf.c        | 9 +++++++++
>>   src/conf/domain_conf.h        | 1 +
>>   src/libxl/libxl_domain.c      | 1 +
>>   src/qemu/qemu_domain.c        | 3 ++-
>>   src/security/virt-aa-helper.c | 3 ++-
>>   5 files changed, 15 insertions(+), 2 deletions(-)
>>
>> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
>> index f58a6d77b9..f06070d740 100644
>> --- a/src/conf/domain_conf.c
>> +++ b/src/conf/domain_conf.c
>> @@ -5265,6 +5265,15 @@
>> virDomainDeviceDefPostParseCheckFeatures(virDomainDeviceDefPtr dev,
>>           virDomainDeviceDefCheckUnsupportedMemoryDevice(dev) < 0)
>>           return -1;
>>   +    if (UNSUPPORTED(VIR_DOMAIN_DEF_FEATURE_NET_MODEL_STRING) &&
>> +        dev->type == VIR_DOMAIN_DEVICE_NET &&
>> +        dev->data.net->modelstr) {
>> +        virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
>> +                       _("driver does not support net model '%s'"),
>> +                       dev->data.net->modelstr);
>> +        return -1;
>> +    }
>> +
>>       return 0;
>>   }
>>   #undef UNSUPPORTED
>> diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
>> index 505982ec0e..14b831ffac 100644
>> --- a/src/conf/domain_conf.h
>> +++ b/src/conf/domain_conf.h
>> @@ -2769,6 +2769,7 @@ typedef enum {
>>       VIR_DOMAIN_DEF_FEATURE_USER_ALIAS = (1 << 5),
>>       VIR_DOMAIN_DEF_FEATURE_NO_BOOT_ORDER = (1 << 6),
>>       VIR_DOMAIN_DEF_FEATURE_FW_AUTOSELECT = (1 << 7),
>> +    VIR_DOMAIN_DEF_FEATURE_NET_MODEL_STRING = (1 << 8),
>>   } virDomainDefFeatures;
>>     diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c
>> index ffafa7967d..dc974dc926 100644
>> --- a/src/libxl/libxl_domain.c
>> +++ b/src/libxl/libxl_domain.c
>> @@ -424,6 +424,7 @@ virDomainDefParserConfig
>> libxlDomainDefParserConfig = {
>>       .macPrefix = { 0x00, 0x16, 0x3e },
>>       .devicesPostParseCallback = libxlDomainDeviceDefPostParse,
>>       .domainPostParseCallback = libxlDomainDefPostParse,
>> +    .features = VIR_DOMAIN_DEF_FEATURE_NET_MODEL_STRING,
>>   };
>>     diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
>> index 6718dfbc22..1214e32be4 100644
>> --- a/src/qemu/qemu_domain.c
>> +++ b/src/qemu/qemu_domain.c
>> @@ -6967,7 +6967,8 @@ virDomainDefParserConfig
>> virQEMUDriverDomainDefParserConfig = {
>>                   VIR_DOMAIN_DEF_FEATURE_OFFLINE_VCPUPIN |
>>                   VIR_DOMAIN_DEF_FEATURE_INDIVIDUAL_VCPUS |
>>                   VIR_DOMAIN_DEF_FEATURE_USER_ALIAS |
>> -                VIR_DOMAIN_DEF_FEATURE_FW_AUTOSELECT,
>> +                VIR_DOMAIN_DEF_FEATURE_FW_AUTOSELECT |
>> +                VIR_DOMAIN_DEF_FEATURE_NET_MODEL_STRING,
>>   };
>>     diff --git a/src/security/virt-aa-helper.c
>> b/src/security/virt-aa-helper.c
>> index 989dcf1784..c250c61cb6 100644
>> --- a/src/security/virt-aa-helper.c
>> +++ b/src/security/virt-aa-helper.c
>> @@ -645,7 +645,8 @@ caps_mockup(vahControl * ctl, const char *xmlStr)
>>   virDomainDefParserConfig virAAHelperDomainDefParserConfig = {
>>       .features = VIR_DOMAIN_DEF_FEATURE_MEMORY_HOTPLUG |
>>                   VIR_DOMAIN_DEF_FEATURE_OFFLINE_VCPUPIN |
>> -                VIR_DOMAIN_DEF_FEATURE_INDIVIDUAL_VCPUS,
>> +                VIR_DOMAIN_DEF_FEATURE_INDIVIDUAL_VCPUS |
>> +                VIR_DOMAIN_DEF_FEATURE_NET_MODEL_STRING,
>>   };
>>     static int
>>
> 
> You've changed some other drivers too. Should we enable this feature for
> them too?
> 

The other drivers are all changed to only handle known enum values. This
feature is only enabled for drivers that still contain code which may
process the raw modelstr. So that's libxl and qemu (and by extension
virt-aa-helper which processes XML). So I think this piece is correct.

Thanks,
Cole