From e028de5bb928d7752a19ca0c6396e17971847289 Mon Sep 17 00:00:00 2001 From: Ben Pfaff Date: Mon, 28 Nov 2011 13:49:12 -0800 Subject: [PATCH] ovs-vlan-bugs: Document driver bug with priority tagged packets. Reported-by: Jesse Gross --- utilities/ovs-vlan-bugs.man | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/utilities/ovs-vlan-bugs.man b/utilities/ovs-vlan-bugs.man index bdca8fcc..1e62d16e 100644 --- a/utilities/ovs-vlan-bugs.man +++ b/utilities/ovs-vlan-bugs.man @@ -6,6 +6,11 @@ the extracted tag. Drivers are supposed to only enable stripping if a \fBvlan_group\fR is registered but not all of them do that. . .IP \(bu +On receive, some drivers handle priority tagged packets specially and +don't pass the tag onto the network stack at all, so Open vSwitch +never has a chance to see it. +. +.IP \(bu Some drivers size their receive buffers based on whether a \fBvlan_group\fR is enabled, meaning that a maximum size packet with a VLAN tag will not fit if no \fBvlan_group\fR is configured. -- 2.30.2