Re: [Kimchi-devel] [PATCH] VLAN: Do not allow bridge to be the trunk device

From: Zhou Zheng Sheng <zhshzhou(a)linux.vnet.ibm.com&gt; In Linux networking, a usual VLAN + bridge network setup is as the following. eth0 |-> eth0.10 -> br10 -> vnet101, vnet102, ... |-> eth0.20 -> br20 -> vnet201, vnet202, ... While the eth0 trunk and VLAN interfaces provide the isolation service, the bridges provide the switching inside the respective VLAN. It's not very useful to have a bridge device as the trunk because the VLAN interfaces on a trunk should be isolated. This patch checks if the front-end submits an invalid setup to use a bridge as the VLAN trunk device and raises exception. Before this patch, if the user creates a bridged network over an existing bridge with VLAN tag set. The back-end just ignores the VLAN and creates an ordinary bridged network. After this patch, the back-end raises an exception with an explanation in this case, so the user knows what's going on and can re-try with correct parameters. Signed-off-by: Zhou Zheng Sheng <zhshzhou(a)linux.vnet.ibm.com&gt; --- src/kimchi/i18n.py | 1 + src/kimchi/model/networks.py | 2 ++ 2 files changed, 3 insertions(+) diff --git a/src/kimchi/i18n.py b/src/kimchi/i18n.py index 589c8cb..b463bd1 100644 --- a/src/kimchi/i18n.py +++ b/src/kimchi/i18n.py @@ -182,6 +182,7 @@ messages = { "KCHNET0016E": _("Specify name and type to create a Network"), "KCHNET0017E": _("Unable to delete network %(name)s. There are some virtual machines and/or templates linked to this network."), "KCHNET0018E": _("Unable to deactivate network %(name)s. There are some virtual machines and/or templates linked to this network."), + "KCHNET0019E": _("Bridge device %(name)s can not be the trunk device of a VLAN."), "KCHDR0001E": _("Debug report %(name)s does not exist"), "KCHDR0002E": _("Debug report tool not found in system"), diff --git a/src/kimchi/model/networks.py b/src/kimchi/model/networks.py index 0242156..531f614 100644 --- a/src/kimchi/model/networks.py +++ b/src/kimchi/model/networks.py @@ -151,6 +151,8 @@ class NetworksModel(object): raise MissingParameter("KCHNET0004E", {'name': params['name']}) if netinfo.is_bridge(iface): + if 'vlan_id' in params: + raise InvalidParameter('KCHNET0019E', {'name': iface})

params['bridge'] = iface elif netinfo.is_bare_nic(iface) or netinfo.is_bonding(iface): if params.get('vlan_id') is None: