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Re: [libvirt] [PATCH v2] RFC Libvirt + Openvswitch





On Mon, Feb 13, 2012 at 9:56 PM, Laine Stump <laine laine org> wrote:
On 02/10/2012 04:09 PM, Ansis Atteka wrote:
> This patch allows libvirt to add interfaces to already
> existing Open vSwitch bridges. The following syntax in
> domain XML file can be used:
>
>     <interface type='bridge'>
>       <mac address='52:54:00:d0:3f:f2'/>
>       <source bridge='ovsbr'/>
>       <virtualport type='openvswitch'>
>         <parameters interfaceid='921a80cd-e6de-5a2e-db9c-ab27f15a6e1d'/>
>       </virtualport>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
>     </interface>
>
> or if libvirt should auto-generate the interfaceid use
> following syntax:
>
>     <interface type='bridge'>
>       <mac address='52:54:00:d0:3f:f2'/>
>       <source bridge='ovsbr'/>
>       <virtualport type='openvswitch'>
>       </virtualport>

Everything in this patch looks really good - it could be pushed with
just a few nits fixed (detailed later on).

This bit right above which demonstrates a case where interfaceid will be
autogenerated is the only concern I have left - as I mentioned before,
although you're doing the auto-generate of the interfaceid exactly the
same as is done for instanceid (and also uuid and macaddr), this is
going to cause a problem when we get to defining networks for
openvswitch. In that case, to specify that a network uses openvswitch,
we'll want to do this:

  <network>
    <name>ovs-network</name>
    <forward mode='bridge'/>
    <bridge name='ovbr0'/>
    <virtualport type='openvswitch'>
    </virtualport>
  </network>
I haven't put a lot of thought into this, but I guess once we get to
networks, we might consider to use following syntax in the network
XML:

      <network>
        <name>ovs-network</name>
        <forward mode='bridge'/>
        <bridge name='ovbr0' type='[openvswitch|linux|default]' />
      </network>

This would ensure that switch from Linux to OVS bridge networks
would not require any changes to existing XML config.

Anyway this is something that would require more careful thinking.

But because an interfaceid is auto-generated by the parser when one
isn't given, and a common parser function for virtualport is used by the
domain and network parsers, this will result in an interfaceid being
filled in when the network is defined, which makes no sense for a
<network> definition, since each interface that uses this network is
supposed to have its own unique interfaceid. However, the code decides
that the bridge is an openvswitch by looking for the presence of a
virtualport of type='openvswitch'.

I can see a couple ways out of this:

1) we could add an arg to virNetDevVPortProfileParse:

virNetDevVPortProfilePtr
virNetDevVPortProfileParse(xmlNodePtr node, unsigned int flags);

with a possible flag being VIR_NETDEV_VPORT_AUTOGEN

If that flag is given, interfaceid and instanceid will be auto-generated
if necessary during parse, otherwise they will be left blank.

2) Rather than deciding which type of bridge we're dealing with by
looking at the config, we could try to do it by direct examination of
the system.
The first thing that comes into my mind would be to use SIOCETHTOOL
ioctl call with cmd==ETHTOOL_GDRVINFO. Then the bridge's driver name
would be either "linux" or "openvswitch".

Something along the lines of (2) may be a good idea anyway, especially
if we think about the idea of a guest that might migrate between a host
that has openvswitch and one that doesn't, with the restriction that we
want a persistent interfaceid for the times it's connected to an
openvswitch. In that case, the interface definition would look like:

   <interface type='network'>
     <source network='bridged-network'>
     <mac address='00:11:22:33:44:55'/>
     <virtualport type='openvswitch'/>
       <parameters interfaceid='921a80cd-e6de-5a2e-db9c-ab27f15a6e1d'
profileid='test-profile'/>
     </virtualport>
  </interface>

(you would need to specify the virtualport in the <interface> so that it
would always be the same). Of course if you migrated to a machine where
bridged-network happened to describe an openvswitch, this would
coincidentally work correctly. But if bridged-network described a
standard linux bridge, we would be trying to do openvswitch commands on
a device that wasn't an openvswitch!

So, I'm wondering if there's a simple way to confirm that a device
*isn't* an openvswitch without relying on calling any utilities that are
part of the ovs package.

I'm thinking it may be okay to push this code more or less as-is though,
since it works properly for the case of straight <interface
type='bridge'/>, and the changes I'm talking about are refinements that
are backward compatible, and are only necessary when we add support for
<network>s that use openvswitch. Any other libvirt regulars have an
opinion on this?


>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
>     </interface>
>
> It is also possible to pass an optional profileid. To do that
> use following syntax:
>
>    <interface type='bridge'>
>      <source bridge='ovsbr'/>
>      <mac address='00:55:1a:65:a2:8d'/>
>      <virtualport type='openvswitch'>
>        <parameters interfaceid='921a80cd-e6de-5a2e-db9c-ab27f15a6e1d' profileid='test-profile'/>
>      </virtualport>
>    </interface>
>
> To create Open vSwitch bridge install Open vSwitch and
> run the following command:
>
>     ovs-vsctl add-br ovsbr
> ---
>  configure.ac                         |    5 +
>  src/Makefile.am                      |    1 +
>  src/conf/domain_conf.c               |   51 +++++++++++--
>  src/conf/domain_conf.h               |    5 +-
>  src/conf/netdev_vport_profile_conf.c |   47 +++++++++++-
>  src/libvirt_private.syms             |    7 ++-
>  src/lxc/lxc_driver.c                 |   37 +++++++--
>  src/network/bridge_driver.c          |    3 +-
>  src/qemu/qemu_command.c              |    5 +-
>  src/qemu/qemu_hotplug.c              |   17 ++++-
>  src/qemu/qemu_migration.c            |    4 +-
>  src/qemu/qemu_process.c              |   10 ++-
>  src/uml/uml_conf.c                   |    3 +-
>  src/util/virnetdevopenvswitch.c      |  135 ++++++++++++++++++++++++++++++++++
>  src/util/virnetdevopenvswitch.h      |   42 +++++++++++
>  src/util/virnetdevtap.c              |   14 +++-
>  src/util/virnetdevtap.h              |    5 +-
>  src/util/virnetdevvportprofile.c     |    2 +
>  src/util/virnetdevvportprofile.h     |    7 ++-
>  19 files changed, 365 insertions(+), 35 deletions(-)
>  create mode 100644 src/util/virnetdevopenvswitch.c
>  create mode 100644 src/util/virnetdevopenvswitch.h
>
> diff --git a/configure.ac b/configure.ac
> index 9fb7bfc..dca178f 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -213,6 +213,8 @@ AC_PATH_PROG([UDEVSETTLE], [udevsettle], [],
>       [/sbin:/usr/sbin:/usr/local/sbin:$PATH])
>  AC_PATH_PROG([MODPROBE], [modprobe], [],
>       [/sbin:/usr/sbin:/usr/local/sbin:$PATH])
> +AC_PATH_PROG([OVSVSCTL], [ovs-vsctl], [ovs-vsctl],
> +     [/sbin:/usr/sbin:/usr/local/sbin:$PATH])
>
>  AC_DEFINE_UNQUOTED([DNSMASQ],["$DNSMASQ"],
>          [Location or name of the dnsmasq program])
> @@ -220,6 +222,9 @@ AC_DEFINE_UNQUOTED([RADVD],["$RADVD"],
>          [Location or name of the radvd program])
>  AC_DEFINE_UNQUOTED([TC],["$TC"],
>          [Location or name of the tc profram (see iproute2)])
> +AC_DEFINE_UNQUOTED([OVSVSCTL],["$OVSVSCTL"],
> +        [Location or name of the ovs-vsctl program])
> +
>  if test -n "$UDEVADM"; then
>    AC_DEFINE_UNQUOTED([UDEVADM],["$UDEVADM"],
>          [Location or name of the udevadm program])
> diff --git a/src/Makefile.am b/src/Makefile.am
> index a3dd847..d5f52a0 100644
> --- a/src/Makefile.am
> +++ b/src/Makefile.am
> @@ -97,6 +97,7 @@ UTIL_SOURCES =                                                      \
>               util/virnetdevbandwidth.h util/virnetdevbandwidth.c \
>               util/virnetdevbridge.h util/virnetdevbridge.c   \
>               util/virnetdevmacvlan.c util/virnetdevmacvlan.h \
> +             util/virnetdevopenvswitch.h util/virnetdevopenvswitch.c \
>               util/virnetdevtap.h util/virnetdevtap.c         \
>               util/virnetdevveth.h util/virnetdevveth.c \
>               util/virnetdevvportprofile.h util/virnetdevvportprofile.c \
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index a09a506..5b5db43 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -31,6 +31,7 @@
>  #include <sys/time.h>
>  #include <strings.h>
>
> +#include "internal.h"
>  #include "virterror_internal.h"
>  #include "datatypes.h"
>  #include "domain_conf.h"
> @@ -951,6 +952,7 @@ virDomainActualNetDefFree(virDomainActualNetDefPtr def)
>      switch (def->type) {
>      case VIR_DOMAIN_NET_TYPE_BRIDGE:
>          VIR_FREE(def->data.bridge.brname);
> +        VIR_FREE(def->data.bridge.ovsPort);

We should change all occurrences of ovsPort to virtPortProfile for
consistency, and to allow for future use of the portprofile here for
other non-ovs scenarios.

>          break;
>      case VIR_DOMAIN_NET_TYPE_DIRECT:
>          VIR_FREE(def->data.direct.linkdev);
> @@ -994,6 +996,7 @@ void virDomainNetDefFree(virDomainNetDefPtr def)
>      case VIR_DOMAIN_NET_TYPE_BRIDGE:
>          VIR_FREE(def->data.bridge.brname);
>          VIR_FREE(def->data.bridge.ipaddr);
> +        VIR_FREE(def->data.bridge.ovsPort);
>          break;
>
>      case VIR_DOMAIN_NET_TYPE_INTERNAL:
> @@ -3732,7 +3735,11 @@ virDomainActualNetDefParseXML(xmlNodePtr node,
>      }
>
>      if (actual->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
> -        actual->data.bridge.brname = virXPathString("string(./source[1]/@bridge)", ctxt);
> +        xmlNodePtr virtPortNode = virXPathNode("./virtualport", ctxt);
> +        if (virtPortNode &&
> +            (!(actual->data.bridge.ovsPort =
> +               virNetDevVPortProfileParse(virtPortNode))))
> +            goto error;
>      } else if (actual->type == VIR_DOMAIN_NET_TYPE_DIRECT) {
>          xmlNodePtr virtPortNode;
>
> @@ -3861,7 +3868,8 @@ virDomainNetDefParseXML(virCapsPtr caps,
>                  mode = virXMLPropString(cur, "mode");
>              } else if ((virtPort == NULL) &&
>                         ((def->type == VIR_DOMAIN_NET_TYPE_DIRECT) ||
> -                        (def->type == VIR_DOMAIN_NET_TYPE_NETWORK)) &&
> +                        (def->type == VIR_DOMAIN_NET_TYPE_NETWORK) ||
> +                        (def->type == VIR_DOMAIN_NET_TYPE_BRIDGE)) &&
>                         xmlStrEqual(cur->name, BAD_CAST "virtualport")) {
>                  if (!(virtPort = virNetDevVPortProfileParse(cur)))
>                      goto error;
> @@ -4000,6 +4008,8 @@ virDomainNetDefParseXML(virCapsPtr caps,
>              def->data.bridge.ipaddr = address;
>              address = NULL;
>          }
> +        def->data.bridge.ovsPort = virtPort;
> +        virtPort = NULL;
>          break;
>
>      case VIR_DOMAIN_NET_TYPE_CLIENT:
> @@ -10429,6 +10439,12 @@ virDomainActualNetDefFormat(virBufferPtr buf,
>      case VIR_DOMAIN_NET_TYPE_BRIDGE:
>          virBufferEscapeString(buf, "        <source bridge='%s'/>\n",
>                                def->data.bridge.brname);
> +        if (def->data.bridge.ovsPort) {
> +            virBufferAdjustIndent(buf, 6);
> +            if (virNetDevVPortProfileFormat(def->data.bridge.ovsPort, buf) < 0)
> +                return -1;
> +            virBufferAdjustIndent(buf, -6);
> +        }
>          break;
>
>      case VIR_DOMAIN_NET_TYPE_DIRECT:
> @@ -10516,6 +10532,12 @@ virDomainNetDefFormat(virBufferPtr buf,
>          if (def->data.bridge.ipaddr)
>              virBufferAsprintf(buf, "      <ip address='%s'/>\n",
>                                def->data.bridge.ipaddr);
> +        if (def->data.bridge.ovsPort) {
> +            virBufferAdjustIndent(buf, 6);
> +            if (virNetDevVPortProfileFormat(def->data.bridge.ovsPort, buf) < 0)
> +                return -1;
> +            virBufferAdjustIndent(buf, -6);
> +        }
>          break;
>
>      case VIR_DOMAIN_NET_TYPE_SERVER:
> @@ -13832,15 +13854,27 @@ virDomainNetGetActualDirectMode(virDomainNetDefPtr iface)
>  }
>
>  virNetDevVPortProfilePtr
> -virDomainNetGetActualDirectVirtPortProfile(virDomainNetDefPtr iface)
> +virDomainNetGetActualVirtPortProfile(virDomainNetDefPtr iface)


In hindsight, renaming this function would have been better done in a
separate pre-requisite patch, just to avoid clutter in this patch.


>  {
> -    if (iface->type == VIR_DOMAIN_NET_TYPE_DIRECT)
> +    switch (iface->type) {
> +    case VIR_DOMAIN_NET_TYPE_DIRECT:
>          return iface->data.direct.virtPortProfile;
> -    if (iface->type != VIR_DOMAIN_NET_TYPE_NETWORK)
> -        return NULL;
> -    if (!iface->data.network.actual)
> +    case VIR_DOMAIN_NET_TYPE_BRIDGE:
> +        return iface->data.bridge.ovsPort;
> +    case VIR_DOMAIN_NET_TYPE_NETWORK:
> +        if (!iface->data.network.actual)
> +            return NULL;
> +        switch (iface->data.network.actual->type) {
> +        case VIR_DOMAIN_NET_TYPE_DIRECT:
> +            return iface->data.network.actual->data.direct.virtPortProfile;
> +        case VIR_DOMAIN_NET_TYPE_BRIDGE:
> +            return iface->data.network.actual->data.bridge.ovsPort;
> +        default:
> +            return NULL;
> +        }
> +    default:
>          return NULL;
> -    return iface->data.network.actual->data.direct.virtPortProfile;
> +    }
>  }
>
>  virNetDevBandwidthPtr
> @@ -13853,7 +13887,6 @@ virDomainNetGetActualBandwidth(virDomainNetDefPtr iface)
>      return iface->bandwidth;
>  }
>
> -

stray extra whitespace change...

>  /* Return listens[ii] from the appropriate union for the graphics
>   * type, or NULL if this is an unsuitable type, or the index is out of
>   * bounds. If force0 is TRUE, ii == 0, and there is no listen array,
> diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
> index 8bb21cf..c4c3551 100644
> --- a/src/conf/domain_conf.h
> +++ b/src/conf/domain_conf.h
> @@ -41,6 +41,7 @@
>  # include "virnetdevmacvlan.h"
>  # include "sysinfo.h"
>  # include "virnetdevvportprofile.h"
> +# include "virnetdevopenvswitch.h"
>  # include "virnetdevbandwidth.h"
>
>  /* Different types of hypervisor */
> @@ -596,6 +597,7 @@ struct _virDomainActualNetDef {
>      union {
>          struct {
>              char *brname;
> +            virNetDevVPortProfilePtr ovsPort;


These should be named the same as they are in the existing cases
(virtPortProfile), since there may be other uses for a virtPortProfile
on a bridge aside from openvswitch.


>          } bridge;
>          struct {
>              char *linkdev;
> @@ -647,6 +649,7 @@ struct _virDomainNetDef {
>          struct {
>              char *brname;
>              char *ipaddr;
> +            virNetDevVPortProfilePtr ovsPort;

Likewise.

>          } bridge;
>          struct {
>              char *name;
> @@ -1875,7 +1878,7 @@ const char *virDomainNetGetActualBridgeName(virDomainNetDefPtr iface);
>  const char *virDomainNetGetActualDirectDev(virDomainNetDefPtr iface);
>  int virDomainNetGetActualDirectMode(virDomainNetDefPtr iface);
>  virNetDevVPortProfilePtr
> -virDomainNetGetActualDirectVirtPortProfile(virDomainNetDefPtr iface);
> +virDomainNetGetActualVirtPortProfile(virDomainNetDefPtr iface);
>  virNetDevBandwidthPtr
>  virDomainNetGetActualBandwidth(virDomainNetDefPtr iface);
>
> diff --git a/src/conf/netdev_vport_profile_conf.c b/src/conf/netdev_vport_profile_conf.c
> index b48b2cb..205d674 100644
> --- a/src/conf/netdev_vport_profile_conf.c
> +++ b/src/conf/netdev_vport_profile_conf.c
> @@ -35,7 +35,8 @@
>  VIR_ENUM_IMPL(virNetDevVPort, VIR_NETDEV_VPORT_PROFILE_LAST,
>                "none",
>                "802.1Qbg",
> -              "802.1Qbh")
> +              "802.1Qbh",
> +              "openvswitch")
>
>
>  virNetDevVPortProfilePtr
> @@ -47,6 +48,7 @@ virNetDevVPortProfileParse(xmlNodePtr node)
>      char *virtPortTypeIDVersion = NULL;
>      char *virtPortInstanceID = NULL;
>      char *virtPortProfileID = NULL;
> +    char *virtPortInterfaceID = NULL;
>      virNetDevVPortProfilePtr virtPort = NULL;
>      xmlNodePtr cur = node->children;
>
> @@ -76,7 +78,7 @@ virNetDevVPortProfileParse(xmlNodePtr node)
>              virtPortTypeIDVersion = virXMLPropString(cur, "typeidversion");
>              virtPortInstanceID = virXMLPropString(cur, "instanceid");
>              virtPortProfileID = virXMLPropString(cur, "profileid");
> -
> +            virtPortInterfaceID = virXMLPropString(cur, "interfaceid");
>              break;
>          }
>
> @@ -171,6 +173,33 @@ virNetDevVPortProfileParse(xmlNodePtr node)
>              goto error;
>          }
>          break;
> +    case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH:
> +        if (virtPortInterfaceID != NULL) {
> +            if (virUUIDParse(virtPortInterfaceID,
> +                             virtPort->u.openvswitch.interfaceID)) {
> +                virNetDevError(VIR_ERR_XML_ERROR, "%s",
> +                                     _("cannot parse interfaceid parameter as a uuid"));
> +                goto error;
> +            }
> +        } else {
> +            if (virUUIDGenerate(virtPort->u.openvswitch.interfaceID)) {
> +                virNetDevError(VIR_ERR_XML_ERROR, "%s",
> +                                     _("cannot generate a random uuid for interfaceid"));
> +                goto error;
> +            }
> +        }
> +        /* profileid is not mandatory for Open vSwitch */
> +        if (virtPortProfileID != NULL) {
> +            if (virStrcpyStatic(virtPort->u.openvswitch.profileID,
> +                                virtPortProfileID) == NULL) {
> +                virNetDevError(VIR_ERR_XML_ERROR, "%s",
> +                                     _("profileid parameter too long"));


I'm not sure why the existing profileID is a fixed length. If that's
something that is limiting to openvswitch, we should take care of that
limitation. But that shouldn't hole up this patch going in (since you're
only propagating an existing practice).

> +                goto error;
> +            }
> +        } else {
> +            virtPort->u.openvswitch.profileID[0] = '\0';
> +        }
> +        break;
>
>      default:
>          virNetDevError(VIR_ERR_XML_ERROR,
> @@ -225,6 +254,20 @@ virNetDevVPortProfileFormat(virNetDevVPortProfilePtr virtPort,
>                            virtPort->u.virtPort8021Qbh.profileID);
>          break;
>
> +    case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH:
> +        virUUIDFormat(virtPort->u.openvswitch.interfaceID,
> +                      uuidstr);
> +        if (virtPort->u.openvswitch.profileID[0] == '\0') {
> +            virBufferAsprintf(buf, "  <parameters interfaceid='%s'/>\n",
> +                              uuidstr);
> +        } else {
> +            virBufferAsprintf(buf, "  <parameters interfaceid='%s' "
> +                              "profileid='%s'/>\n", uuidstr,
> +                              virtPort->u.openvswitch.profileID);
> +        }
> +
> +        break;
> +
>      default:
>          virNetDevError(VIR_ERR_XML_ERROR,
>                         _("unexpected virtualport type %d"), virtPort->virtPortType);
> diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
> index 0c22dec..ad5c7d3 100644
> --- a/src/libvirt_private.syms
> +++ b/src/libvirt_private.syms
> @@ -378,7 +378,7 @@ virDomainNetGetActualBandwidth;
>  virDomainNetGetActualBridgeName;
>  virDomainNetGetActualDirectDev;
>  virDomainNetGetActualDirectMode;
> -virDomainNetGetActualDirectVirtPortProfile;
> +virDomainNetGetActualVirtPortProfile;

We like to keep these in alphabetic order, so this one will have to move
down.


>  virDomainNetGetActualType;
>  virDomainNetIndexByMac;
>  virDomainNetInsert;
> @@ -1237,6 +1237,11 @@ virNetDevMacVLanCreateWithVPortProfile;
>  virNetDevMacVLanDeleteWithVPortProfile;
>
>
> +# virnetdevopenvswitch.h
> +virNetDevOpenvswitchAddPort;
> +virNetDevOpenvswitchRemovePort;
> +
> +
>  # virnetdevtap.h
>  virNetDevTapCreate;
>  virNetDevTapCreateInBridgePort;
> diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
> index b712da4..17e8312 100644
> --- a/src/lxc/lxc_driver.c
> +++ b/src/lxc/lxc_driver.c
> @@ -56,6 +56,7 @@
>  #include "domain_nwfilter.h"
>  #include "network/bridge_driver.h"
>  #include "virnetdev.h"
> +#include "virnetdevtap.h"
>  #include "virnodesuspend.h"
>  #include "virtime.h"
>  #include "virtypedparam.h"
> @@ -1105,6 +1106,7 @@ static void lxcVmCleanup(lxc_driver_t *driver,
>      virCgroupPtr cgroup;
>      int i;
>      lxcDomainObjPrivatePtr priv = vm->privateData;
> +    virNetDevVPortProfilePtr vport = NULL;
>
>      /* now that we know it's stopped call the hook if present */
>      if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
> @@ -1132,10 +1134,15 @@ static void lxcVmCleanup(lxc_driver_t *driver,
>      priv->monitorWatch = -1;
>
>      for (i = 0 ; i < vm->def->nnets ; i++) {
> -        ignore_value(virNetDevSetOnline(vm->def->nets[i]->ifname, false));
> -        ignore_value(virNetDevVethDelete(vm->def->nets[i]->ifname));
> -
> -        networkReleaseActualDevice(vm->def->nets[i]);
> +        virDomainNetDefPtr iface = vm->def->nets[i];
> +        vport = virDomainNetGetActualVirtPortProfile(iface);
> +        ignore_value(virNetDevSetOnline(iface->ifname, false));
> +        if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
> +            ignore_value(virNetDevOpenvswitchRemovePort(
> +                                       virDomainNetGetActualBridgeName(iface),
> +                                       iface->ifname));
> +        ignore_value(virNetDevVethDelete(iface->ifname));
> +        networkReleaseActualDevice(iface);
>      }
>
>      virDomainConfVMNWFilterTeardown(vm);
> @@ -1165,6 +1172,7 @@ static int lxcSetupInterfaceBridged(virConnectPtr conn,
>      int ret = -1;
>      char *parentVeth;
>      char *containerVeth = NULL;
> +    const virNetDevVPortProfilePtr vport = virDomainNetGetActualVirtPortProfile(net);
>
>      VIR_DEBUG("calling vethCreate()");
>      parentVeth = net->ifname;
> @@ -1186,7 +1194,11 @@ static int lxcSetupInterfaceBridged(virConnectPtr conn,
>      if (virNetDevSetMAC(containerVeth, net->mac) < 0)
>          goto cleanup;
>
> -    if (virNetDevBridgeAddPort(brname, parentVeth) < 0)
> +    if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
> +        ret = virNetDevOpenvswitchAddPort(brname, parentVeth, net->mac, vport);
> +    else
> +        ret = virNetDevBridgeAddPort(brname, parentVeth);
> +    if (ret < 0)
>          goto cleanup;
>
>      if (virNetDevSetOnline(parentVeth, true) < 0)
> @@ -1242,7 +1254,7 @@ static int lxcSetupInterfaceDirect(virConnectPtr conn,
>       * and automagically dies when the container dies. So
>       * we have no dev to perform disassociation with.
>       */
> -    prof = virDomainNetGetActualDirectVirtPortProfile(net);
> +    prof = virDomainNetGetActualVirtPortProfile(net);
>      if (prof) {
>          lxcError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
>                   _("Unable to set port profile on direct interfaces"));
> @@ -1260,7 +1272,7 @@ static int lxcSetupInterfaceDirect(virConnectPtr conn,
>              virDomainNetGetActualDirectDev(net),
>              virDomainNetGetActualDirectMode(net),
>              false, false, def->uuid,
> -            virDomainNetGetActualDirectVirtPortProfile(net),
> +            virDomainNetGetActualVirtPortProfile(net),
>              &res_ifname,
>              VIR_NETDEV_VPORT_PROFILE_OP_CREATE,
>              driver->stateDir,
> @@ -1377,8 +1389,15 @@ static int lxcSetupInterfaces(virConnectPtr conn,
>
>  cleanup:
>      if (ret != 0) {
> -        for (i = 0 ; i < def->nnets ; i++)
> -            networkReleaseActualDevice(def->nets[i]);
> +        for (i = 0 ; i < def->nnets ; i++) {
> +            virDomainNetDefPtr iface = def->nets[i];
> +            virNetDevVPortProfilePtr vport = virDomainNetGetActualVirtPortProfile(iface);
> +            if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
> +                ignore_value(virNetDevOpenvswitchRemovePort(
> +                                        virDomainNetGetActualBridgeName(iface),
> +                                        iface->ifname));
> +            networkReleaseActualDevice(iface);
> +        }

While going through this, I noticed what seemed to be some
inconsistencies in the way lxc cleans up network interfaces (prior to
your changes), but some of the code also led me to believe I don't
understand everything that's going on, so I'm going to say your patches
here are okay, as they don't change behavior for non-ovs bridge devices.

>      }
>      return ret;
>  }
> diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
> index 57ebb9f..1423d3f 100644
> --- a/src/network/bridge_driver.c
> +++ b/src/network/bridge_driver.c
> @@ -1765,7 +1765,8 @@ networkStartNetworkVirtual(struct network_driver *driver,
>              goto err0;
>          }
>          if (virNetDevTapCreateInBridgePort(network->def->bridge,
> -                                           &macTapIfName, network->def->mac, 0, false, NULL) < 0) {
> +                           &macTapIfName, network->def->mac, 0,
> +                           false, NULL, NULL) < 0) {

There's an indentation problem here.


>              VIR_FREE(macTapIfName);
>              goto err0;
>          }
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index 1b92aa4..591e371 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -154,7 +154,7 @@ qemuPhysIfaceConnect(virDomainDefPtr def,
>          virDomainNetGetActualDirectDev(net),
>          virDomainNetGetActualDirectMode(net),
>          true, vnet_hdr, def->uuid,
> -        virDomainNetGetActualDirectVirtPortProfile(net),
> +        virDomainNetGetActualVirtPortProfile(net),
>          &res_ifname,
>          vmop, driver->stateDir,
>          virDomainNetGetActualBandwidth(net));
> @@ -247,7 +247,8 @@ qemuNetworkIfaceConnect(virDomainDefPtr def,
>      memcpy(tapmac, net->mac, VIR_MAC_BUFLEN);
>      tapmac[0] = 0xFE; /* Discourage bridge from using TAP dev MAC */
>      err = virNetDevTapCreateInBridgePort(brname, &net->ifname, tapmac,
> -                                         vnet_hdr, true, &tapfd);
> +                             vnet_hdr, true, &tapfd,
> +                             virDomainNetGetActualVirtPortProfile(net));
>      virDomainAuditNetDevice(def, net, "/dev/net/tun", tapfd >= 0);
>      if (err < 0) {
>          if (template_ifname)
> diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
> index b4870be..3b1dbbf 100644
> --- a/src/qemu/qemu_hotplug.c
> +++ b/src/qemu/qemu_hotplug.c
> @@ -40,6 +40,7 @@
>  #include "qemu_cgroup.h"
>  #include "locking/domain_lock.h"
>  #include "network/bridge_driver.h"
> +#include "virnetdevtap.h"
>
>  #define VIR_FROM_THIS VIR_FROM_QEMU
>
> @@ -652,6 +653,7 @@ int qemuDomainAttachNetDevice(virConnectPtr conn,
>      int vhostfd = -1;
>      char *nicstr = NULL;
>      char *netstr = NULL;
> +    virNetDevVPortProfilePtr vport = NULL;
>      int ret = -1;
>      virDomainDevicePCIAddress guestAddr;
>      int vlan;
> @@ -838,6 +840,12 @@ cleanup:
>          if (iface_connected)
>              virDomainConfNWFilterTeardown(net);
>
> +        vport = virDomainNetGetActualVirtPortProfile(net);
> +        if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
> +            ignore_value(virNetDevOpenvswitchRemovePort(
> +                                       virDomainNetGetActualBridgeName(net),
> +                                       net->ifname));

Again a small indentation problem.

> +
>          networkReleaseActualDevice(net);
>      }
>
> @@ -1833,6 +1841,7 @@ int qemuDomainDetachNetDevice(struct qemud_driver *driver,
>      qemuDomainObjPrivatePtr priv = vm->privateData;
>      int vlan;
>      char *hostnet_name = NULL;
> +    virNetDevVPortProfilePtr vport = NULL;
>
>      for (i = 0 ; i < vm->def->nnets ; i++) {
>          virDomainNetDefPtr net = vm->def->nets[i];
> @@ -1923,7 +1932,7 @@ int qemuDomainDetachNetDevice(struct qemud_driver *driver,
>                           detach->ifname, detach->mac,
>                           virDomainNetGetActualDirectDev(detach),
>                           virDomainNetGetActualDirectMode(detach),
> -                         virDomainNetGetActualDirectVirtPortProfile(detach),
> +                         virDomainNetGetActualVirtPortProfile(detach),
>                           driver->stateDir));
>          VIR_FREE(detach->ifname);
>      }
> @@ -1938,6 +1947,12 @@ int qemuDomainDetachNetDevice(struct qemud_driver *driver,
>          }
>      }
>
> +    vport = virDomainNetGetActualVirtPortProfile(detach);
> +    if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
> +        ignore_value(virNetDevOpenvswitchRemovePort(
> +                                       virDomainNetGetActualBridgeName(detach),
> +                                       detach->ifname));
> +
>      networkReleaseActualDevice(detach);
>      if (vm->def->nnets > 1) {
>          memmove(vm->def->nets + i,
> diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
> index 12cfbde..a513b3c 100644
> --- a/src/qemu/qemu_migration.c
> +++ b/src/qemu/qemu_migration.c
> @@ -2563,7 +2563,7 @@ qemuMigrationVPAssociatePortProfiles(virDomainDefPtr def) {
>          net = def->nets[i];
>          if (virDomainNetGetActualType(net) == VIR_DOMAIN_NET_TYPE_DIRECT) {
>              if (virNetDevVPortProfileAssociate(net->ifname,
> -                                               virDomainNetGetActualDirectVirtPortProfile(net),
> +                                               virDomainNetGetActualVirtPortProfile(net),
>                                                 net->mac,
>                                                 virDomainNetGetActualDirectDev(net),
>                                                 def->uuid,
> @@ -2580,7 +2580,7 @@ err_exit:
>          net = def->nets[i];
>          if (virDomainNetGetActualType(net) == VIR_DOMAIN_NET_TYPE_DIRECT) {
>              ignore_value(virNetDevVPortProfileDisassociate(net->ifname,
> -                                                           virDomainNetGetActualDirectVirtPortProfile(net),
> +                                                           virDomainNetGetActualVirtPortProfile(net),
>                                                             net->mac,
>                                                             virDomainNetGetActualDirectDev(net),
>                                                             VIR_NETDEV_VPORT_PROFILE_OP_MIGRATE_IN_FINISH));
> diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
> index 2d92d66..9bc5436 100644
> --- a/src/qemu/qemu_process.c
> +++ b/src/qemu/qemu_process.c
> @@ -62,6 +62,7 @@
>  #include "network/bridge_driver.h"
>  #include "uuid.h"
>  #include "virtime.h"
> +#include "virnetdevtap.h"
>
>  #define VIR_FROM_THIS VIR_FROM_QEMU
>
> @@ -3604,6 +3605,7 @@ void qemuProcessStop(struct qemud_driver *driver,
>      qemuDomainObjPrivatePtr priv = vm->privateData;
>      virErrorPtr orig_err;
>      virDomainDefPtr def;
> +    virNetDevVPortProfilePtr vport = NULL;
>      int i;
>      int logfile = -1;
>      char *timestamp;
> @@ -3724,13 +3726,19 @@ void qemuProcessStop(struct qemud_driver *driver,
>                               net->ifname, net->mac,
>                               virDomainNetGetActualDirectDev(net),
>                               virDomainNetGetActualDirectMode(net),
> -                             virDomainNetGetActualDirectVirtPortProfile(net),
> +                             virDomainNetGetActualVirtPortProfile(net),
>                               driver->stateDir));
>              VIR_FREE(net->ifname);
>          }
>          /* release the physical device (or any other resources used by
>           * this interface in the network driver
>           */
> +        vport = virDomainNetGetActualVirtPortProfile(net);
> +        if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
> +            ignore_value(virNetDevOpenvswitchRemovePort(
> +                                       virDomainNetGetActualBridgeName(net),
> +                                       net->ifname));
> +
>          networkReleaseActualDevice(net);
>      }
>
> diff --git a/src/uml/uml_conf.c b/src/uml/uml_conf.c
> index 316d558..8c17578 100644
> --- a/src/uml/uml_conf.c
> +++ b/src/uml/uml_conf.c
> @@ -142,7 +142,8 @@ umlConnectTapDevice(virConnectPtr conn,
>      memcpy(tapmac, net->mac, VIR_MAC_BUFLEN);
>      tapmac[0] = 0xFE; /* Discourage bridge from using TAP dev MAC */
>      if (virNetDevTapCreateInBridgePort(bridge, &net->ifname, tapmac,
> -                                       0, true, NULL) < 0) {
> +                       0, true, NULL,
> +                       virDomainNetGetActualVirtPortProfile(net)) < 0) {
>          if (template_ifname)
>              VIR_FREE(net->ifname);
>          goto error;
> diff --git a/src/util/virnetdevopenvswitch.c b/src/util/virnetdevopenvswitch.c
> new file mode 100644
> index 0000000..24a335a
> --- /dev/null
> +++ b/src/util/virnetdevopenvswitch.c
> @@ -0,0 +1,135 @@
> +/*
> + * Copyright (C) 2012 Nicira, Inc.
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * 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
> + *
> + * Authors:
> + *     Dan Wendlandt <dan nicira com>
> + *     Kyle Mestery <kmestery cisco com>
> + *     Ansis Atteka <aatteka nicira com>
> + */
> +
> +#include <config.h>
> +
> +#include "virnetdevopenvswitch.h"
> +#include "command.h"
> +#include "memory.h"
> +#include "virterror_internal.h"
> +#include "ignore-value.h"
> +#include "virmacaddr.h"
> +
> +#define VIR_FROM_THIS VIR_FROM_NONE
> +
> +/**
> + * virNetDevOpenvswitchAddPort:
> + * @brname: the bridge name
> + * @ifname: the network interface name
> + * @macaddr: the mac address of the virtual interface
> + * @ovsport: the ovs specific fields
> + *
> + * Add an interface to the OVS bridge
> + *
> + * Returns 0 in case of success or -1 in case of failure.
> + */
> +int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
> +                                   const unsigned char *macaddr,
> +                                   virNetDevVPortProfilePtr ovsport)
> +{
> +    int ret = -1;
> +    virCommandPtr cmd = NULL;
> +    char macaddrstr[VIR_MAC_STRING_BUFLEN];
> +    char uuidstr[VIR_UUID_STRING_BUFLEN];
> +    char *attachedmac_ex_id = NULL;
> +    char *ifaceid_ex_id = NULL;
> +    char *profile_ex_id = NULL;
> +
> +    virMacAddrFormat(macaddr, macaddrstr);
> +    virUUIDFormat(ovsport->u.openvswitch.interfaceID, uuidstr);
> +
> +    if (virAsprintf(&attachedmac_ex_id, "external-ids:attached-mac=\"%s\"",
> +                    macaddrstr) < 0)

If the quotes aren't necessary, there is a "virCommandAddArgPair" that
will do this for you once you've created the command:

       virCommandAddArgPair(cmd, "external-ids:attached-mac", macaddrstr);

(I wonder if it would be worthwhile adding a "quote the arg" (and/or
"quote the arg if necessary") flag to that function (or maybe creating a
new function virCommandAddArgPairQuoted).

> +        goto cleanup;
> +    if (virAsprintf(&ifaceid_ex_id, "external-ids:iface-id=\"%s\"",
> +                    uuidstr) < 0)
> +        goto cleanup;
> +    if (ovsport->u.openvswitch.profileID[0] != '\0') {
> +        if (virAsprintf(&profile_ex_id, "external-ids:port-profile=""> > +                        ovsport->u.openvswitch.profileID) < 0)
> +            goto cleanup;
> +    }
> +
> +    cmd = virCommandNew(OVSVSCTL);
> +    if (ovsport->u.openvswitch.profileID[0] == '\0') {
> +        virCommandAddArgList(cmd, "--", "--may-exist", "add-port",
> +                        brname, ifname,
> +                        "--", "set", "Interface", ifname, attachedmac_ex_id,
> +                        "--", "set", "Interface", ifname, ifaceid_ex_id,
> +                        "--", "set", "Interface", ifname,
> +                        "external-ids:iface-status=active",
> +                        NULL);
> +    } else {
> +        virCommandAddArgList(cmd, "--", "--may-exist", "add-port",
> +                        brname, ifname,
> +                        "--", "set", "Interface", ifname, attachedmac_ex_id,
> +                        "--", "set", "Interface", ifname, ifaceid_ex_id,
> +                        "--", "set", "Interface", ifname, profile_ex_id,
> +                        "--", "set", "Interface", ifname,
> +                        "external-ids:iface-status=active",
> +                        NULL);
> +    }
> +
> +    if (virCommandRun(cmd, NULL) < 0) {
> +        virReportSystemError(VIR_ERR_INTERNAL_ERROR,
> +                             _("Unable to add port %s to OVS bridge %s"),
> +                             ifname, brname);
> +        goto cleanup;
> +    }
> +    ret = 0;
> +
> +    cleanup:
> +        VIR_FREE(attachedmac_ex_id);
> +        VIR_FREE(ifaceid_ex_id);
> +        VIR_FREE(profile_ex_id);
> +        virCommandFree(cmd);
> +        return ret;
> +}
> +
> +/**
> + * virNetDevOpenvswitchRemovePort:
> + * @ifname: the network interface name
> + *
> + * Deletes an interface from a OVS bridge
> + *
> + * Returns 0 in case of success or -1 in case of failure.
> + */
> +int virNetDevOpenvswitchRemovePort(const char *brname ATTRIBUTE_UNUSED, const char *ifname)
> +{
> +    int ret = -1;
> +    virCommandPtr cmd = NULL;
> +
> +    cmd = virCommandNew(OVSVSCTL);
> +    virCommandAddArgList(cmd, "--", "--if-exists", "del-port", ifname, NULL);
> +
> +    if (virCommandRun(cmd, NULL) < 0) {
> +        virReportSystemError(VIR_ERR_INTERNAL_ERROR,
> +                             _("Unable to delete port %s from OVS"), ifname);
> +        goto cleanup;
> +    }
> +    ret = 0;
> +
> +    cleanup:
> +        virCommandFree(cmd);
> +        return ret;
> +}
> diff --git a/src/util/virnetdevopenvswitch.h b/src/util/virnetdevopenvswitch.h
> new file mode 100644
> index 0000000..bca4c3e
> --- /dev/null
> +++ b/src/util/virnetdevopenvswitch.h
> @@ -0,0 +1,42 @@
> +/*
> + * Copyright (C) 2012 Nicira, Inc.
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * 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
> + *
> + * Authors:
> + *     Dan Wendlandt <dan nicira com>
> + *     Kyle Mestery <kmestery cisco com>
> + *     Ansis Atteka <aatteka nicira com>
> + */
> +
> +#ifndef __VIR_NETDEV_OPENVSWITCH_H__
> +# define __VIR_NETDEV_OPENVSWITCH_H__
> +
> +# include "internal.h"
> +# include "util.h"
> +# include "virnetdevvportprofile.h"
> +
> +
> +int virNetDevOpenvswitchAddPort(const char *brname,
> +                                const char *ifname,
> +                                const unsigned char *macaddr,
> +                                virNetDevVPortProfilePtr ovsport)
> +    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
> +    ATTRIBUTE_RETURN_CHECK;
> +
> +int virNetDevOpenvswitchRemovePort(const char *brname, const char *ifname)
> +    ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
> +
> +#endif /* __VIR_NETDEV_OPENVSWITCH_H__ */
> diff --git a/src/util/virnetdevtap.c b/src/util/virnetdevtap.c
> index 2ed53c6..cd1d4c1 100644
> --- a/src/util/virnetdevtap.c
> +++ b/src/util/virnetdevtap.c
> @@ -25,6 +25,7 @@
>  #include "virnetdevtap.h"
>  #include "virnetdev.h"
>  #include "virnetdevbridge.h"
> +#include "virnetdevopenvswitch.h"
>  #include "virterror_internal.h"
>  #include "virfile.h"
>  #include "virterror_internal.h"
> @@ -249,6 +250,7 @@ int virNetDevTapDelete(const char *ifname ATTRIBUTE_UNUSED)
>   * @macaddr: desired MAC address (VIR_MAC_BUFLEN long)
>   * @vnet_hdr: whether to try enabling IFF_VNET_HDR
>   * @tapfd: file descriptor return value for the new tap device
> + * @ovsport: Open vSwitch specific configuration
>   *
>   * This function creates a new tap device on a bridge. @ifname can be either
>   * a fixed name or a name template with '%d' for dynamic name allocation.
> @@ -265,7 +267,8 @@ int virNetDevTapCreateInBridgePort(const char *brname,
>                                     const unsigned char *macaddr,
>                                     int vnet_hdr,
>                                     bool up,
> -                                   int *tapfd)
> +                                   int *tapfd,
> +                                   virNetDevVPortProfilePtr ovsport)

This arg should be named virtPortProfile for consistency (although I
think that name is too long, maybe a global replace is in order sometime...)

>  {
>      if (virNetDevTapCreate(ifname, vnet_hdr, tapfd) < 0)
>          return -1;
> @@ -286,8 +289,13 @@ int virNetDevTapCreateInBridgePort(const char *brname,
>      if (virNetDevSetMTUFromDevice(*ifname, brname) < 0)
>          goto error;
>
> -    if (virNetDevBridgeAddPort(brname, *ifname) < 0)
> -        goto error;
> +    if (ovsport) {
> +        if (virNetDevOpenvswitchAddPort(brname, *ifname, macaddr, ovsport) < 0)
> +            goto error;
> +    } else {
> +        if (virNetDevBridgeAddPort(brname, *ifname) < 0)
> +            goto error;
> +    }
>
>      if (virNetDevSetOnline(*ifname, up) < 0)
>          goto error;
> diff --git a/src/util/virnetdevtap.h b/src/util/virnetdevtap.h
> index fb35ac5..ee159f7 100644
> --- a/src/util/virnetdevtap.h
> +++ b/src/util/virnetdevtap.h
> @@ -24,6 +24,7 @@
>  # define __VIR_NETDEV_TAP_H__
>
>  # include "internal.h"
> +# include "virnetdevvportprofile.h"
>
>  int virNetDevTapCreate(char **ifname,
>                         int vnet_hdr,
> @@ -38,8 +39,10 @@ int virNetDevTapCreateInBridgePort(const char *brname,
>                                     const unsigned char *macaddr,
>                                     int vnet_hdr,
>                                     bool up,
> -                                   int *tapfd)
> +                                   int *tapfd,
> +                                   virNetDevVPortProfilePtr ovsport)
>      ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
>      ATTRIBUTE_RETURN_CHECK;
>
> +
>  #endif /* __VIR_NETDEV_TAP_H__ */
> diff --git a/src/util/virnetdevvportprofile.c b/src/util/virnetdevvportprofile.c
> index faadc3a..67fd7bc 100644
> --- a/src/util/virnetdevvportprofile.c
> +++ b/src/util/virnetdevvportprofile.c
> @@ -968,6 +968,7 @@ virNetDevVPortProfileAssociate(const char *macvtap_ifname,
>
>      switch (virtPort->virtPortType) {
>      case VIR_NETDEV_VPORT_PROFILE_NONE:
> +    case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH:
>      case VIR_NETDEV_VPORT_PROFILE_LAST:
>          break;
>
> @@ -1027,6 +1028,7 @@ virNetDevVPortProfileDisassociate(const char *macvtap_ifname,
>
>      switch (virtPort->virtPortType) {
>      case VIR_NETDEV_VPORT_PROFILE_NONE:
> +    case VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH:
>      case VIR_NETDEV_VPORT_PROFILE_LAST:
>          break;
>
> diff --git a/src/util/virnetdevvportprofile.h b/src/util/virnetdevvportprofile.h
> index 7a8d81f..ec2d06d 100644
> --- a/src/util/virnetdevvportprofile.h
> +++ b/src/util/virnetdevvportprofile.h
> @@ -35,6 +35,7 @@ enum virNetDevVPortProfile {
>      VIR_NETDEV_VPORT_PROFILE_NONE,
>      VIR_NETDEV_VPORT_PROFILE_8021QBG,
>      VIR_NETDEV_VPORT_PROFILE_8021QBH,
> +    VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH,
>
>      VIR_NETDEV_VPORT_PROFILE_LAST,
>  };
> @@ -54,7 +55,7 @@ enum virNetDevVPortProfileOp {
>  };
>  VIR_ENUM_DECL(virNetDevVPortProfileOp)
>
> -/* profile data for macvtap (VEPA) */
> +/* profile data for macvtap (VEPA) and openvswitch */
>  typedef struct _virNetDevVPortProfile virNetDevVPortProfile;
>  typedef virNetDevVPortProfile *virNetDevVPortProfilePtr;
>  struct _virNetDevVPortProfile {
> @@ -69,6 +70,10 @@ struct _virNetDevVPortProfile {
>          struct {
>              char          profileID[LIBVIRT_IFLA_VF_PORT_PROFILE_MAX];
>          } virtPort8021Qbh;
> +        struct {
> +            unsigned char interfaceID[VIR_UUID_BUFLEN];
> +            char          profileID[LIBVIRT_IFLA_VF_PORT_PROFILE_MAX];
> +        } openvswitch;
>      } u;
>  };
>

I didn't see any major problems in this version, so I'm inclined to ACK
it conditioned on the nits being fixed (they're simple enough I could
just take care of them while pushing it). The one thing I would like to
get other opinions of before pushing is problem with auto-generating the
interfaceid (just in case there's a better way to fix it that would
required making a change now).

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