netdev - [PATCH net] docs: operstates: document IF_OPER

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Date:   Sat, 31 Jul 2021 07:40:52 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, corbet@....net, linux-doc@...r.kernel.org,
        andrew@...n.ch, Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net] docs: operstates: document IF_OPER_TESTING

IF_OPER_TESTING is in fact used today.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 Documentation/networking/operstates.rst | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/networking/operstates.rst b/Documentation/networking/operstates.rst
index f6b9cce5b201..1ee2141e8ef1 100644
--- a/Documentation/networking/operstates.rst
+++ b/Documentation/networking/operstates.rst
@@ -73,7 +73,9 @@ TLV IFLA_OPERSTATE
  state (f.e. VLAN).
 
 IF_OPER_TESTING (4):
- Unused in current kernel.
+ Interface is in testing mode, for example executing driver self-tests
+ or media (cable) test. It can't be used for normal traffic until tests
+ complete.
 
 IF_OPER_DORMANT (5):
  Interface is L1 up, but waiting for an external event, f.e. for a
-- 
2.31.1