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-rw-r--r--Documentation/networking/xfrm_proc.txt20
1 files 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@linux-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