linux/Documentation/networking/xfrm_proc.txt
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   1XFRM proc - /proc/net/xfrm_* files
   2==================================
   3Masahide NAKAMURA <nakam@linux-ipv6.org>
   4
   5
   6Transformation Statistics
   7-------------------------
   8xfrm_proc is a statistics shown factor dropped by transformation
   9for developer.
  10It is a counter designed from current transformation source code
  11and defined like linux private MIB.
  12
  13Inbound statistics
  14~~~~~~~~~~~~~~~~~~
  15XfrmInError:
  16        All errors which is not matched others
  17XfrmInBufferError:
  18        No buffer is left
  19XfrmInHdrError:
  20        Header error
  21XfrmInNoStates:
  22        No state is found
  23        i.e. Either inbound SPI, address, or IPsec protocol at SA is wrong
  24XfrmInStateProtoError:
  25        Transformation protocol specific error
  26        e.g. SA key is wrong
  27XfrmInStateModeError:
  28        Transformation mode specific error
  29XfrmInStateSeqError:
  30        Sequence error
  31        i.e. Sequence number is out of window
  32XfrmInStateExpired:
  33        State is expired
  34XfrmInStateMismatch:
  35        State has mismatch option
  36        e.g. UDP encapsulation type is mismatch
  37XfrmInStateInvalid:
  38        State is invalid
  39XfrmInTmplMismatch:
  40        No matching template for states
  41        e.g. Inbound SAs are correct but SP rule is wrong
  42XfrmInNoPols:
  43        No policy is found for states
  44        e.g. Inbound SAs are correct but no SP is found
  45XfrmInPolBlock:
  46        Policy discards
  47XfrmInPolError:
  48        Policy error
  49
  50Outbound errors
  51~~~~~~~~~~~~~~~
  52XfrmOutError:
  53        All errors which is not matched others
  54XfrmOutBundleGenError:
  55        Bundle generation error
  56XfrmOutBundleCheckError:
  57        Bundle check error
  58XfrmOutNoStates:
  59        No state is found
  60XfrmOutStateProtoError:
  61        Transformation protocol specific error
  62XfrmOutStateModeError:
  63        Transformation mode specific error
  64XfrmOutStateSeqError:
  65        Sequence error
  66        i.e. Sequence number overflow
  67XfrmOutStateExpired:
  68        State is expired
  69XfrmOutPolBlock:
  70        Policy discards
  71XfrmOutPolDead:
  72        Policy is dead
  73XfrmOutPolError:
  74        Policy error
  75
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