[libvirt] [PATCH] Add support for setting VLANs on Open vSwitch ports
Kyle Mestery
kmestery at cisco.com
Fri Aug 17 04:04:54 UTC 2012
Add the ability to support VLAN tags for Open vSwitch
virtual port types. To accomplish this, modify
virNetDevOpenvswitchAddPort and
virNetDevTapCreateInBridgePort to take a virNetDevVlanPtr
argument. When adding the port to the OVS bridge, setup
either a single VLAN or a trunk port based on the
configuration from the virNetDevVlanPtr.
Signed-off-by: Kyle Mestery <kmestery at cisco.com>
---
.gnulib | 2 +-
src/lxc/lxc_process.c | 2 +-
src/network/bridge_driver.c | 2 +-
src/qemu/qemu_command.c | 1 +
src/uml/uml_conf.c | 1 +
src/util/virnetdevopenvswitch.c | 34 +++++++++++++++++++++++++++++++---
src/util/virnetdevopenvswitch.h | 4 +++-
src/util/virnetdevtap.c | 3 ++-
src/util/virnetdevtap.h | 2 ++
9 files changed, 43 insertions(+), 8 deletions(-)
diff --git a/.gnulib b/.gnulib
index 271dd74..dbd9144 160000
--- a/.gnulib
+++ b/.gnulib
@@ -1 +1 @@
-Subproject commit 271dd74fdf54ec2a03e73a5173b0b5697f6088f1
+Subproject commit dbd914496c99c52220e5f5ba4121d6cb55fb3beb
diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c
index 046ed86..dc34bef 100644
--- a/src/lxc/lxc_process.c
+++ b/src/lxc/lxc_process.c
@@ -325,7 +325,7 @@ static int virLXCProcessSetupInterfaceBridged(virConnectPtr conn,
if (vport && vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
ret = virNetDevOpenvswitchAddPort(brname, parentVeth, &net->mac,
- vm->uuid, vport);
+ vm->uuid, vport, &net->vlan);
else
ret = virNetDevBridgeAddPort(brname, parentVeth);
if (ret < 0)
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index 474bbfa..a78e3b6 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -1763,7 +1763,7 @@ networkStartNetworkVirtual(struct network_driver *driver,
}
if (virNetDevTapCreateInBridgePort(network->def->bridge,
&macTapIfName, &network->def->mac,
- NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL,
VIR_NETDEV_TAP_CREATE_USE_MAC_FOR_BRIDGE) < 0) {
VIR_FREE(macTapIfName);
goto err0;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 9383530..e0062a1 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -255,6 +255,7 @@ qemuNetworkIfaceConnect(virDomainDefPtr def,
err = virNetDevTapCreateInBridgePort(brname, &net->ifname, &net->mac,
def->uuid, &tapfd,
virDomainNetGetActualVirtPortProfile(net),
+ &net->vlan,
tap_create_flags);
virDomainAuditNetDevice(def, net, "/dev/net/tun", tapfd >= 0);
if (err < 0) {
diff --git a/src/uml/uml_conf.c b/src/uml/uml_conf.c
index 4c299d8..5461b42 100644
--- a/src/uml/uml_conf.c
+++ b/src/uml/uml_conf.c
@@ -141,6 +141,7 @@ umlConnectTapDevice(virConnectPtr conn,
if (virNetDevTapCreateInBridgePort(bridge, &net->ifname, &net->mac,
vm->uuid, NULL,
virDomainNetGetActualVirtPortProfile(net),
+ &net->vlan,
VIR_NETDEV_TAP_CREATE_IFUP) < 0) {
if (template_ifname)
VIR_FREE(net->ifname);
diff --git a/src/util/virnetdevopenvswitch.c b/src/util/virnetdevopenvswitch.c
index b57532b..8a31e77 100644
--- a/src/util/virnetdevopenvswitch.c
+++ b/src/util/virnetdevopenvswitch.c
@@ -46,9 +46,11 @@
int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
const virMacAddrPtr macaddr,
const unsigned char *vmuuid,
- virNetDevVPortProfilePtr ovsport)
+ virNetDevVPortProfilePtr ovsport,
+ virNetDevVlanPtr virtVlan)
{
int ret = -1;
+ int i = 0;
virCommandPtr cmd = NULL;
char macaddrstr[VIR_MAC_STRING_BUFLEN];
char ifuuidstr[VIR_UUID_STRING_BUFLEN];
@@ -57,6 +59,7 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
char *ifaceid_ex_id = NULL;
char *profile_ex_id = NULL;
char *vmid_ex_id = NULL;
+ virBufferPtr buf;
virMacAddrFormat(macaddr, macaddrstr);
virUUIDFormat(ovsport->interfaceID, ifuuidstr);
@@ -76,11 +79,35 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
ovsport->profileID) < 0)
goto out_of_memory;
}
+ if (virtVlan) {
+ if (VIR_ALLOC(buf) < 0)
+ goto out_of_memory;
+
+ /* Trunk port first */
+ if (virtVlan->trunk) {
+ virBufferAdd(buf, "trunk=", -1);
+
+ /*
+ * Trunk ports have at least one VLAN. Do the first one
+ * outside the "for" loop so we can put a "," at the
+ * start of the for loop if there are more than one VLANs
+ * on this trunk port.
+ */
+ virBufferAsprintf(buf, "%d", virtVlan->tag[i]);
+
+ for (i = 1; i < virtVlan->nTags; i++) {
+ virBufferAdd(buf, ",", -1);
+ virBufferAsprintf(buf, "%d", virtVlan->tag[i]);
+ }
+ } else {
+ virBufferAsprintf(buf, "tag=%d", virtVlan->tag[0]);
+ }
+ }
cmd = virCommandNew(OVSVSCTL);
if (ovsport->profileID[0] == '\0') {
virCommandAddArgList(cmd, "--", "--may-exist", "add-port",
- brname, ifname,
+ brname, ifname, virBufferCurrentContent(buf),
"--", "set", "Interface", ifname, attachedmac_ex_id,
"--", "set", "Interface", ifname, ifaceid_ex_id,
"--", "set", "Interface", ifname, vmid_ex_id,
@@ -89,7 +116,7 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
NULL);
} else {
virCommandAddArgList(cmd, "--", "--may-exist", "add-port",
- brname, ifname,
+ brname, ifname, virBufferCurrentContent(buf),
"--", "set", "Interface", ifname, attachedmac_ex_id,
"--", "set", "Interface", ifname, ifaceid_ex_id,
"--", "set", "Interface", ifname, vmid_ex_id,
@@ -108,6 +135,7 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char *ifname,
ret = 0;
cleanup:
+ VIR_FREE(buf);
VIR_FREE(attachedmac_ex_id);
VIR_FREE(ifaceid_ex_id);
VIR_FREE(vmid_ex_id);
diff --git a/src/util/virnetdevopenvswitch.h b/src/util/virnetdevopenvswitch.h
index fbf9168..58b4dda 100644
--- a/src/util/virnetdevopenvswitch.h
+++ b/src/util/virnetdevopenvswitch.h
@@ -27,13 +27,15 @@
# include "internal.h"
# include "util.h"
# include "virnetdevvportprofile.h"
+# include "virnetdevvlan.h"
int virNetDevOpenvswitchAddPort(const char *brname,
const char *ifname,
const virMacAddrPtr macaddr,
const unsigned char *vmuuid,
- virNetDevVPortProfilePtr ovsport)
+ virNetDevVPortProfilePtr ovsport,
+ virNetDevVlanPtr virtVlan)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
ATTRIBUTE_RETURN_CHECK;
diff --git a/src/util/virnetdevtap.c b/src/util/virnetdevtap.c
index 192d180..24f30b5 100644
--- a/src/util/virnetdevtap.c
+++ b/src/util/virnetdevtap.c
@@ -280,6 +280,7 @@ int virNetDevTapCreateInBridgePort(const char *brname,
const unsigned char *vmuuid,
int *tapfd,
virNetDevVPortProfilePtr virtPortProfile,
+ virNetDevVlanPtr virtVlan,
unsigned int flags)
{
virMacAddr tapmac;
@@ -324,7 +325,7 @@ int virNetDevTapCreateInBridgePort(const char *brname,
if (virtPortProfile) {
if (virNetDevOpenvswitchAddPort(brname, *ifname, macaddr, vmuuid,
- virtPortProfile) < 0) {
+ virtPortProfile, virtVlan) < 0) {
goto error;
}
} else {
diff --git a/src/util/virnetdevtap.h b/src/util/virnetdevtap.h
index ce3365e..45d0c08 100644
--- a/src/util/virnetdevtap.h
+++ b/src/util/virnetdevtap.h
@@ -25,6 +25,7 @@
# include "internal.h"
# include "virnetdevvportprofile.h"
+# include "virnetdevvlan.h"
int virNetDevTapCreate(char **ifname,
int *tapfd,
@@ -50,6 +51,7 @@ int virNetDevTapCreateInBridgePort(const char *brname,
const unsigned char *vmuuid,
int *tapfd,
virNetDevVPortProfilePtr virtPortProfile,
+ virNetDevVlanPtr virtVlan,
unsigned int flags)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
ATTRIBUTE_RETURN_CHECK;
--
1.7.11.2
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