From e028de5bb928d7752a19ca0c6396e17971847289 Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@nicira.com>
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 <jesse@nicira.com>
---
 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