[ovs-dev] ovs-vsctl: additional commands for querying VLAN fake bridges.
Ian Campbell
Ian.Campbell at citrix.com
Mon Sep 14 16:52:17 UTC 2009
Our test automation needs to be able to validate that a VLAN bridge and
for this I needed two new operations in ovs-vsctl:
* The ability to query the VLAN tag for a bridge.
* The ability to query the 'parent' of a bridge. The parent is the
non-VLAN/untagged bridge with the same physical devices and
could be a bond.
So given xenbr0 (containing eth0) + xapi2 (VLAN 42 on eth0) and xapi1
(containing bond0 == eth2+eth3) + xapi3 (VLAN 23 on the bonded
interface):
[root at warlock ~]# ovs-vsctl br-to-vlan xapi2
42
[root at warlock ~]# ovs-vsctl br-to-vlan xapi3
23
[root at warlock ~]# ovs-vsctl br-to-parent xapi2
xenbr0
[root at warlock ~]# ovs-vsctl br-to-parent xapi3
xapi1
diff -r d82ddd96072d utilities/ovs-vsctl.in
--- a/utilities/ovs-vsctl.in Mon Sep 14 15:23:30 2009 +0100
+++ b/utilities/ovs-vsctl.in Mon Sep 14 17:42:53 2009 +0100
@@ -275,7 +275,9 @@
del-br BRIDGE delete BRIDGE and all of its ports
list-br print the names of all the bridges
br-exists BRIDGE test whether BRIDGE exists
-
+ br-to-vlan BRIDGE print the VLAN which BRIDGE is on
+ br-to-parent BRIDGE print the parent of BRIDGE
+
Port commands:
list-ports BRIDGE print the names of all the ports on BRIDGE
add-port BRIDGE PORT add network device PORT to BRIDGE
@@ -425,6 +427,16 @@
return
raise Error("no interface named %s" % iface)
+def cmd_br_to_vlan(bridge):
+ cfg = cfg_read(VSWITCHD_CONF)
+ parent, vlan = find_bridge(cfg, bridge)
+ print vlan
+
+def cmd_br_to_parent(bridge):
+ cfg = cfg_read(VSWITCHD_CONF)
+ parent, vlan = find_bridge(cfg, bridge)
+ print parent
+
def main():
# Parse command line.
try:
@@ -473,6 +485,8 @@
'add-bond': (cmd_add_bond, lambda n: n >= 4),
'del-port': (cmd_del_port, 2),
'port-to-br': (cmd_port_to_br, 1),
+ 'br-to-vlan': (cmd_br_to_vlan, 1),
+ 'br-to-parent': (cmd_br_to_parent, 1),
'list-ifaces': (cmd_list_ifaces, 1),
'iface-to-br': (cmd_iface_to_br, 1)}
command = args[0]
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