4:30 p.m.
The following proof of concept patch attempts to show how we might support the use of port
profile IDs. The ID would be associated with an interface on a VM and provided to the
network infrastructure at VM start time. Since the interfaces by which the id can be
provided are still in flux, the use function is only a stub.
Dave
David Allan (1):
Initial POC of port profile id support
docs/schemas/domain.rng | 8 ++++++++
src/conf/domain_conf.c | 12 ++++++++++++
src/conf/domain_conf.h | 1 +
src/libvirt_private.syms | 3 +++
src/qemu/qemu_conf.c | 12 ++++++++++++
src/util/macvtap.c | 13 +++++++++++++
src/util/macvtap.h | 4 ++++
7 files changed, 53 insertions(+), 0 deletions(-)
4:30 p.m.
New subject: [libvirt] [PATCH 1/1] Initial POC of port profile id support
---
docs/schemas/domain.rng | 8 ++++++++
src/conf/domain_conf.c | 12 ++++++++++++
src/conf/domain_conf.h | 1 +
src/libvirt_private.syms | 3 +++
src/qemu/qemu_conf.c | 12 ++++++++++++
src/util/macvtap.c | 13 +++++++++++++
src/util/macvtap.h | 4 ++++
7 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/docs/schemas/domain.rng b/docs/schemas/domain.rng
index d804301..5917f60 100644
--- a/docs/schemas/domain.rng
+++ b/docs/schemas/domain.rng
@@ -794,6 +794,11 @@
<ref name="bridgeMode"/>
</attribute>
</optional>
+ <optional>
+ <attribute name="profileid">
+ <ref name="profileID"/>
+ </attribute>
+ </optional>
<empty/>
</element>
<ref name="interface-options"/>
@@ -1647,6 +1652,9 @@
<param name="pattern">(vepa|bridge|private)</param>
</data>
</define>
+ <define name="profileID">
+ <data type="string"/>
+ </define>
<define name="addrMAC">
<data type="string">
<param
name="pattern">([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}</param>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 66aa53e..ea2f8dd 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -479,6 +479,7 @@ void virDomainNetDefFree(virDomainNetDefPtr def)
case VIR_DOMAIN_NET_TYPE_DIRECT:
VIR_FREE(def->data.direct.linkdev);
+ VIR_FREE(def->data.direct.profileid);
break;
case VIR_DOMAIN_NET_TYPE_USER:
@@ -1801,6 +1802,7 @@ virDomainNetDefParseXML(virCapsPtr caps,
char *internal = NULL;
char *devaddr = NULL;
char *mode = NULL;
+ char *profileid = NULL;
virNWFilterHashTablePtr filterparams = NULL;
if (VIR_ALLOC(def) < 0) {
@@ -1843,6 +1845,7 @@ virDomainNetDefParseXML(virCapsPtr caps,
xmlStrEqual(cur->name, BAD_CAST "source")) {
dev = virXMLPropString(cur, "dev");
mode = virXMLPropString(cur, "mode");
+ profileid = virXMLPropString(cur, "profileid");
} else if ((network == NULL) &&
((def->type == VIR_DOMAIN_NET_TYPE_SERVER) ||
(def->type == VIR_DOMAIN_NET_TYPE_CLIENT) ||
@@ -2018,6 +2021,10 @@ virDomainNetDefParseXML(virCapsPtr caps,
} else
def->data.direct.mode = VIR_DOMAIN_NETDEV_MACVTAP_MODE_VEPA;
+ if (profileid != NULL) {
+ def->data.direct.profileid = profileid;
+ }
+
def->data.direct.linkdev = dev;
dev = NULL;
@@ -2083,6 +2090,7 @@ cleanup:
VIR_FREE(internal);
VIR_FREE(devaddr);
VIR_FREE(mode);
+ VIR_FREE(profileid);
virNWFilterHashTableFree(filterparams);
return def;
@@ -5080,6 +5088,10 @@ virDomainNetDefFormat(virBufferPtr buf,
def->data.direct.linkdev);
virBufferVSprintf(buf, " mode='%s'",
virDomainNetdevMacvtapTypeToString(def->data.direct.mode));
+ if (def->data.direct.profileid) {
+ virBufferEscapeString(buf, " profileid='%s'",
+ def->data.direct.profileid);
+ }
virBufferAddLit(buf, "/>\n");
break;
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index ed1a4ad..4c23a23 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -289,6 +289,7 @@ struct _virDomainNetDef {
struct {
char *linkdev;
int mode;
+ char *profileid;
} direct;
} data;
char *ifname;
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index cc943f8..a14b114 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -702,3 +702,6 @@ virXPathLongLong;
virXPathULongLong;
virXPathLongHex;
virXPathULongHex;
+
+# macvtap.h
+sendPortProfileId;
diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index 8f6f7ec..f2880d3 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -1469,6 +1469,18 @@ qemudPhysIfaceConnect(virConnectPtr conn,
net->model && STREQ(net->model, "virtio"))
vnet_hdr = 1;
+ /* Failure here is equivalent to the failure to plug in a physical
+ * network port.
+ *
+ * If this operation is non-blocking we will have a race between
+ * the VM starting and the interface coming up.
+ *
+ * If any of the subsequent operations fail, will we need to
+ * unwind the sending of the port profile id? */
+ sendPortProfileId(net->data.direct.linkdev,
+ net->data.direct.mode,
+ net->data.direct.profileid);
+
rc = openMacvtapTap(conn, net->ifname, net->mac, linkdev, brmode,
&res_ifname, vnet_hdr);
if (rc >= 0) {
diff --git a/src/util/macvtap.c b/src/util/macvtap.c
index 999e670..585e56b 100644
--- a/src/util/macvtap.c
+++ b/src/util/macvtap.c
@@ -43,6 +43,7 @@
# include "util.h"
# include "memory.h"
+# include "logging.h"
# include "macvtap.h"
# include "conf/domain_conf.h"
# include "virterror_internal.h"
@@ -673,6 +674,18 @@ configMacvtapTap(int tapfd, int vnet_hdr)
}
+int
+sendPortProfileId(const char *linkdev,
+ int mode,
+ const char *profileid)
+{
+ VIR_DEBUG("Sending port profile id '%s' on physical device '%s'
mode %d",
+ profileid, linkdev, mode);
+
+ return 0;
+}
+
+
/**
* openMacvtapTap:
* Create an instance of a macvtap device and open its tap character
diff --git a/src/util/macvtap.h b/src/util/macvtap.h
index bd5f4d6..6cd7621 100644
--- a/src/util/macvtap.h
+++ b/src/util/macvtap.h
@@ -38,6 +38,10 @@ int openMacvtapTap(virConnectPtr conn,
void delMacvtap(const char *ifname);
+int sendPortProfileId(const char *linkdev,
+ int mode,
+ const char *profileid);
+
# endif /* WITH_MACVTAP */
# define MACVTAP_MODE_PRIVATE_STR "private"
--
1.7.0.1
5:28 a.m.
New subject: [libvirt] [PATCH 1/1] Initial POC of port profile id support
On Tue, Mar 30, 2010 at 05:30:56PM -0400, David Allan wrote:
---
docs/schemas/domain.rng | 8 ++++++++
src/conf/domain_conf.c | 12 ++++++++++++
src/conf/domain_conf.h | 1 +
src/libvirt_private.syms | 3 +++
src/qemu/qemu_conf.c | 12 ++++++++++++
src/util/macvtap.c | 13 +++++++++++++
src/util/macvtap.h | 4 ++++
7 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/docs/schemas/domain.rng b/docs/schemas/domain.rng
index d804301..5917f60 100644
--- a/docs/schemas/domain.rng
+++ b/docs/schemas/domain.rng
@@ -794,6 +794,11 @@
<ref name="bridgeMode"/>
</attribute>
</optional>
+ <optional>
+ <attribute name="profileid">
+ <ref name="profileID"/>
+ </attribute>
+ </optional>
<empty/>
</element>
<ref name="interface-options"/>
@@ -1647,6 +1652,9 @@
<param name="pattern">(vepa|bridge|private)</param>
</data>
</define>
+ <define name="profileID">
+ <data type="string"/>
+ </define>
<define name="addrMAC">
<data type="string">
<param
name="pattern">([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}</param>
I think this would be better off as a new element within interface, so
that if we need more data associated with the profile we can provide
it. eg perhaps something like
<switchport profile='XYZ'/>
Wouldn't this also be valid for the type=bridge networking mode, since
that is connecting VMs to the LAN too.
Regards,
Daniel
--
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|: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :|
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10:42 a.m.
New subject: [libvirt] [PATCH 1/1] Initial POC of port profile id support
On 03/31/2010 06:28 AM, Daniel P. Berrange wrote:
On Tue, Mar 30, 2010 at 05:30:56PM -0400, David Allan wrote:
> ---
> docs/schemas/domain.rng | 8 ++++++++
> src/conf/domain_conf.c | 12 ++++++++++++
> src/conf/domain_conf.h | 1 +
> src/libvirt_private.syms | 3 +++
> src/qemu/qemu_conf.c | 12 ++++++++++++
> src/util/macvtap.c | 13 +++++++++++++
> src/util/macvtap.h | 4 ++++
> 7 files changed, 53 insertions(+), 0 deletions(-)
>
> diff --git a/docs/schemas/domain.rng b/docs/schemas/domain.rng
> index d804301..5917f60 100644
> --- a/docs/schemas/domain.rng
> +++ b/docs/schemas/domain.rng
> @@ -794,6 +794,11 @@
> <ref name="bridgeMode"/>
> </attribute>
> </optional>
> +<optional>
> +<attribute name="profileid">
> +<ref name="profileID"/>
> +</attribute>
> +</optional>
> <empty/>
> </element>
> <ref name="interface-options"/>
> @@ -1647,6 +1652,9 @@
> <param name="pattern">(vepa|bridge|private)</param>
> </data>
> </define>
> +<define name="profileID">
> +<data type="string"/>
> +</define>
> <define name="addrMAC">
> <data type="string">
> <param
name="pattern">([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}</param>
I think this would be better off as a new element within interface, so
that if we need more data associated with the profile we can provide
it. eg perhaps something like
<switchport profile='XYZ'/>
Wouldn't this also be valid for the type=bridge networking mode, since
that is connecting VMs to the LAN too.
Agreed with both; an updated patch is attached. I also added a test for
the new element.
Dave
6:28 a.m.
New subject: [libvirt] [PATCH 1/1] Initial POC of port profile id support
On Fri, 2010-04-02 at 11:42 -0400, Dave Allan wrote:
Agreed with both; an updated patch is attached. I also added a test
for
the new element.
Dave
Hi, unless I am missing something, you changed only the XML (<attribute
name="profile">), but not the source code (profileid =
virXMLPropString(cur, "profileid");)
I also get some weird characters, which I don't understand:
13:13:05.475: debug : virDomainNetDefParseXML:2057 : profileid=a
13:13:19.668: debug : virDomainNetDefFormat:5153 : profileid=з�
I added a few debug lines in domain_conf.c to produce above output. The
first line is when libvirtd starts up and reads all domain files. The
second line is when I tried to edit the domain xml via "virsh edit".
--
Best regards,
Gerhard Stenzel,
-----------------------------------------------------------------------------------------------------------------------------------
IBM Deutschland Research & Development GmbH
Vorsitzender des Aufsichtsrats: Martin Jetter
Geschäftsführung: Dirk Wittkopp
Sitz der Gesellschaft: Böblingen
Registergericht: Amtsgericht Stuttgart, HRB 243294
7:17 a.m.
New subject: [libvirt] [PATCH 1/1] Initial POC of port profile id support
libvir-list-bounces(a)redhat.com wrote on 04/02/2010 11:42:03 AM:
On 03/31/2010 06:28 AM, Daniel P. Berrange wrote:
> On Tue, Mar 30, 2010 at 05:30:56PM -0400, David Allan wrote:
>> ---
[...]
>
> Wouldn't this also be valid for the type=bridge networking mode, since
> that is connecting VMs to the LAN too.
Agreed with both; an updated patch is attached. I also added a test for
the new element.
Dave
From a945107f047c7cd71f9c1b74fd74c47d8cdc3670 Mon Sep 17 00:00:00 2001
From: David
Allan <dallan(a)redhat.com>
Date: Fri, 12 Mar 2010 13:25:04 -0500
Subject: [PATCH 1/1] POC of port profile id support
* Modified schema per DanPB's feedback
* Added test for modified schema
---
docs/schemas/domain.rng | 13 +++++++++++++
src/conf/domain_conf.c | 12 ++++++++++++
src/conf/domain_conf.h | 1 +
src/libvirt_private.syms | 3 +++
src/qemu/qemu_conf.c | 12 ++++++++++++
src/util/macvtap.c | 13 +++++++++++++
src/util/macvtap.h | 4 ++++
tests/domainschemadata/portprofile.xml | 15 +++++++++++++++
8 files changed, 73 insertions(+), 0 deletions(-)
create mode 100644 tests/domainschemadata/portprofile.xml
diff --git a/docs/schemas/domain.rng b/docs/schemas/domain.rng
index 228665c..53280ce 100644
--- a/docs/schemas/domain.rng
+++ b/docs/schemas/domain.rng
@@ -816,6 +816,9 @@
</optional>
<empty/>
</element>
+ <optional>
+ <ref name="switchPort"/>
+ </optional>
<ref name="interface-options"/>
</interleave>
</group>
@@ -896,6 +899,16 @@
</optional>
</interleave>
</define>
+ <define name="switchPort">
+ <element name="switchport">
+ <optional>
+ <attribute name="profile">
+ <text/>
+ </attribute>
+ </optional>
+ <empty/>
+ </element>
+ </define>
<!--
An emulator description is just a path to the binary used for the
task
-->
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 067f053..d2b791f 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -481,6 +481,7 @@ void virDomainNetDefFree(virDomainNetDefPtr def)
case VIR_DOMAIN_NET_TYPE_DIRECT:
VIR_FREE(def->data.direct.linkdev);
+ VIR_FREE(def->data.direct.profileid);
break;
case VIR_DOMAIN_NET_TYPE_USER:
@@ -1823,6 +1824,7 @@ virDomainNetDefParseXML(virCapsPtr caps,
char *internal = NULL;
char *devaddr = NULL;
char *mode = NULL;
+ char *profileid = NULL;
virNWFilterHashTablePtr filterparams = NULL;
if (VIR_ALLOC(def) < 0) {
@@ -1865,6 +1867,7 @@ virDomainNetDefParseXML(virCapsPtr caps,
xmlStrEqual(cur->name, BAD_CAST "source")) {
dev = virXMLPropString(cur, "dev");
mode = virXMLPropString(cur, "mode");
+ profileid = virXMLPropString(cur, "profileid");
COMMENT:
For the above code to be able to parse this
+ <source dev='eth0' mode='vepa'/>
+ <switchport profile='foo'/>
I think you'll first need to find a switchport element.
} else if ((network == NULL) &&
((def->type == VIR_DOMAIN_NET_TYPE_SERVER) ||
(def->type == VIR_DOMAIN_NET_TYPE_CLIENT) ||
@@ -2040,6 +2043,10 @@ virDomainNetDefParseXML(virCapsPtr caps,
} else
def->data.direct.mode = VIR_DOMAIN_NETDEV_MACVTAP_MODE_VEPA;
+ if (profileid != NULL) {
+ def->data.direct.profileid = profileid;
+ }
+
def->data.direct.linkdev = dev;
dev = NULL;
@@ -2105,6 +2112,7 @@ cleanup:
VIR_FREE(internal);
VIR_FREE(devaddr);
VIR_FREE(mode);
+ VIR_FREE(profileid);
virNWFilterHashTableFree(filterparams);
return def;
@@ -5131,6 +5139,10 @@ virDomainNetDefFormat(virBufferPtr buf,
def->data.direct.linkdev);
virBufferVSprintf(buf, " mode='%s'",
virDomainNetdevMacvtapTypeToString(def->data.direct.mode));
+ if (def->data.direct.profileid) {
+ virBufferEscapeString(buf, " profileid='%s'",
+ def->data.direct.profileid);
+ }
COMMENT:
You'd need to print a switchport element first.
virBufferAddLit(buf, "/>\n");
break;
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index b789289..37a58a9 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -289,6 +289,7 @@ struct _virDomainNetDef {
struct {
char *linkdev;
int mode;
+ char *profileid;
} direct;
} data;
char *ifname;
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 878eda3..253f935 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -703,3 +703,6 @@ virXPathLongLong;
virXPathULongLong;
virXPathLongHex;
virXPathULongHex;
+
+# macvtap.h
+sendPortProfileId;
COMMENT:
There's a separate libvirt_macvtap.syms file.
Also, please prefix this function with macvtap -> macvtapSendPortProfileId
diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index 55397cd..3cb3ce9 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -1469,6 +1469,18 @@ qemudPhysIfaceConnect(virConnectPtr conn,
net->model && STREQ(net->model, "virtio"))
vnet_hdr = 1;
+ /* Failure here is equivalent to the failure to plug in a physical
+ * network port.
+ *
+ * If this operation is non-blocking we will have a race between
+ * the VM starting and the interface coming up.
+ *
+ * If any of the subsequent operations fail, will we need to
+ * unwind the sending of the port profile id? */
+ sendPortProfileId(net->data.direct.linkdev,
+ net->data.direct.mode,
+ net->data.direct.profileid);
+
COMMENT:
I'd push this call into the openMacvtapTap function since it will be part
of the setup of the Tap device, no?
Stefan
rc = openMacvtapTap(conn, net->ifname, net->mac, linkdev, brmode,
&res_ifname, vnet_hdr);
if (rc >= 0) {
diff --git a/src/util/macvtap.c b/src/util/macvtap.c
index 999e670..585e56b 100644
--- a/src/util/macvtap.c
+++ b/src/util/macvtap.c
@@ -43,6 +43,7 @@
# include "util.h"
# include "memory.h"
+# include "logging.h"
# include "macvtap.h"
# include "conf/domain_conf.h"
# include "virterror_internal.h"
@@ -673,6 +674,18 @@ configMacvtapTap(int tapfd, int vnet_hdr)
}
+int
+sendPortProfileId(const char *linkdev,
+ int mode,
+ const char *profileid)
+{
+ VIR_DEBUG("Sending port profile id '%s' on physical device '%s'
mode
%d",
+ profileid, linkdev, mode);
+
+ return 0;
+}
+
+
/**
* openMacvtapTap:
* Create an instance of a macvtap device and open its tap character
diff --git a/src/util/macvtap.h b/src/util/macvtap.h
index bd5f4d6..6cd7621 100644
--- a/src/util/macvtap.h
+++ b/src/util/macvtap.h
@@ -38,6 +38,10 @@ int openMacvtapTap(virConnectPtr conn,
void delMacvtap(const char *ifname);
+int sendPortProfileId(const char *linkdev,
+ int mode,
+ const char *profileid);
+
# endif /* WITH_MACVTAP */
# define MACVTAP_MODE_PRIVATE_STR "private"
diff --git a/tests/domainschemadata/portprofile.xml
b/tests/domainschemadata/portprofile.xml
new file mode 100644
index 0000000..7152ffd
--- /dev/null
+++ b/tests/domainschemadata/portprofile.xml
@@ -0,0 +1,15 @@
+<domain type='lxc'>
+ <name>portprofile</name>
+ <uuid>00000000-0000-0000-0000-000000000000</uuid>
+ <memory>1048576</memory>
+ <os>
+ <type>exe</type>
+ <init>/sh</init>
+ </os>
+ <devices>
+ <interface type='direct'>
+ <source dev='eth0' mode='vepa'/>
+ <switchport profile='foo'/>
+ </interface>
+ </devices>
+</domain>
--
1.7.0.1
9:56 p.m.
New subject: [libvirt] [PATCH 1/1] Initial POC of port profile id support
On Tue, 30 Mar 2010, David Allan wrote:
Date: Tue, 30 Mar 2010 17:30:56 -0400
From: David Allan <dallan(a)redhat.com>
To: libvir-list(a)redhat.com
Subject: [libvirt] [PATCH 1/1] Initial POC of port profile id support
---
docs/schemas/domain.rng | 8 ++++++++
src/conf/domain_conf.c | 12 ++++++++++++
src/conf/domain_conf.h | 1 +
src/libvirt_private.syms | 3 +++
src/qemu/qemu_conf.c | 12 ++++++++++++
src/util/macvtap.c | 13 +++++++++++++
src/util/macvtap.h | 4 ++++
7 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/docs/schemas/domain.rng b/docs/schemas/domain.rng
index d804301..5917f60 100644
--- a/docs/schemas/domain.rng
+++ b/docs/schemas/domain.rng
@@ -794,6 +794,11 @@
<ref name="bridgeMode"/>
</attribute>
</optional>
+ <optional>
+ <attribute name="profileid">
+ <ref name="profileID"/>
+ </attribute>
+ </optional>
<empty/>
</element>
<ref name="interface-options"/>
This is a good proposal. We need it to correctly configure the
guests with VEPA mode. The profile-ID is required for the VEPA mode as
per IEEE 802.1Qbg proposal, however, we can use it with bridging mode as
well. How do we associate it with bridging mode if so desired?
@@ -1647,6 +1652,9 @@
<param name="pattern">(vepa|bridge|private)</param>
</data>
</define>
+ <define name="profileID">
+ <data type="string"/>
+ </define>
<define name="addrMAC">
The profile-ID, as per the TLV described comprises of the following
fields: VSI Manager, VSI instance ID, VSI type, VSI type version.
Though I agree libvirt need not know how to parse it or define the
fields.
+ /* Failure here is equivalent to the failure to plug in a physical
+ * network port.
+ *
+ * If this operation is non-blocking we will have a race between
+ * the VM starting and the interface coming up.
+ *
+ * If any of the subsequent operations fail, will we need to
+ * unwind the sending of the port profile id? */
+ sendPortProfileId(net->data.direct.linkdev,
+ net->data.direct.mode,
+ net->data.direct.profileid);
+
This is good. The VSI Discovery and Configuration protocol(VDP) will need
to be run between the bridge and the KVM host. The VDP daemon then
receives the profile details along with the MAC/VLAN settings for the
interface and initiates the VDP on its behalf with the switch.
A synchronous wait for the VDP to successfully associate the MAC/VLAN
with the switch seems the simplest unless the MACVTAP is configured in
'no carrier' state in the guest (Can that be done?). Otherwise the VM
might start transmitting and loose packets while the VDP completes its
registration. Blocking mode also makes error percolation easier as well.
Vivek
# define MACVTAP_MODE_PRIVATE_STR "private"
--
1.7.0.1
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Vivek Kashyap
Linux Technology Center, IBM
5356
days inactive
5383
days old
6 comments
6 participants
participants (6)
-
Daniel P. Berrange -
Dave Allan -
David Allan
-
Gerhard Stenzel -
Stefan Berger -
Vivek Kashyap