netdev - [PATCH 9/9] xfrm: update the stats documentation

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Message-ID: <20171222112439.12476-10-steffen.klassert@secunet.com>
Date:   Fri, 22 Dec 2017 12:24:39 +0100
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     David Miller <davem@...emloft.net>
CC:     Herbert Xu <herbert@...dor.apana.org.au>,
        Steffen Klassert <steffen.klassert@...unet.com>,
        <netdev@...r.kernel.org>
Subject: [PATCH 9/9] xfrm: update the stats documentation

From: Shannon Nelson <shannon.nelson@...cle.com>

Add a couple of stats that aren't in the documentation file
and rework the top description to be a little more readable.

Signed-off-by: Shannon Nelson <shannon.nelson@...cle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com>
---
 Documentation/networking/xfrm_proc.txt | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/Documentation/networking/xfrm_proc.txt b/Documentation/networking/xfrm_proc.txt
index d0d8bafa9016..2eae619ab67b 100644
--- a/Documentation/networking/xfrm_proc.txt
+++ b/Documentation/networking/xfrm_proc.txt
@@ -5,13 +5,15 @@ Masahide NAKAMURA <nakam@...ux-ipv6.org>
 
 Transformation Statistics
 -------------------------
-xfrm_proc is a statistics shown factor dropped by transformation
-for developer.
-It is a counter designed from current transformation source code
-and defined like linux private MIB.
 
-Inbound statistics
-~~~~~~~~~~~~~~~~~~
+The xfrm_proc code is a set of statistics showing numbers of packets
+dropped by the transformation code and why.  These counters are defined
+as part of the linux private MIB.  These counters can be viewed in
+/proc/net/xfrm_stat.
+
+
+Inbound errors
+~~~~~~~~~~~~~~
 XfrmInError:
 	All errors which is not matched others
 XfrmInBufferError:
@@ -46,6 +48,10 @@ XfrmInPolBlock:
 	Policy discards
 XfrmInPolError:
 	Policy error
+XfrmAcquireError:
+	State hasn't been fully acquired before use
+XfrmFwdHdrError:
+	Forward routing of a packet is not allowed
 
 Outbound errors
 ~~~~~~~~~~~~~~~
@@ -72,3 +78,5 @@ XfrmOutPolDead:
 	Policy is dead
 XfrmOutPolError:
 	Policy error
+XfrmOutStateInvalid:
+	State is invalid, perhaps expired
-- 
2.14.1