.. SPDX-License-Identifier: GPL-2.0
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==================================
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XFRM proc - /proc/net/xfrm_* files
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==================================
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Masahide NAKAMURA <nakam@linux-ipv6.org>
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Transformation Statistics
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-------------------------
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The xfrm_proc code is a set of statistics showing numbers of packets
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dropped by the transformation code and why. These counters are defined
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as part of the linux private MIB. These counters can be viewed in
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/proc/net/xfrm_stat.
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Inbound errors
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~~~~~~~~~~~~~~
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XfrmInError:
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All errors which is not matched others
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XfrmInBufferError:
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No buffer is left
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XfrmInHdrError:
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Header error
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XfrmInNoStates:
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No state is found
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i.e. Either inbound SPI, address, or IPsec protocol at SA is wrong
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XfrmInStateProtoError:
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Transformation protocol specific error
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e.g. SA key is wrong
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XfrmInStateModeError:
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Transformation mode specific error
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XfrmInStateSeqError:
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Sequence error
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i.e. Sequence number is out of window
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XfrmInStateExpired:
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State is expired
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XfrmInStateMismatch:
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State has mismatch option
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e.g. UDP encapsulation type is mismatch
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XfrmInStateInvalid:
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State is invalid
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XfrmInTmplMismatch:
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No matching template for states
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e.g. Inbound SAs are correct but SP rule is wrong
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XfrmInNoPols:
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No policy is found for states
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e.g. Inbound SAs are correct but no SP is found
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XfrmInPolBlock:
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Policy discards
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XfrmInPolError:
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Policy error
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XfrmAcquireError:
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State hasn't been fully acquired before use
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XfrmFwdHdrError:
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Forward routing of a packet is not allowed
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Outbound errors
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~~~~~~~~~~~~~~~
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XfrmOutError:
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All errors which is not matched others
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XfrmOutBundleGenError:
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Bundle generation error
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XfrmOutBundleCheckError:
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Bundle check error
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XfrmOutNoStates:
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No state is found
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XfrmOutStateProtoError:
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Transformation protocol specific error
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XfrmOutStateModeError:
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Transformation mode specific error
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XfrmOutStateSeqError:
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Sequence error
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i.e. Sequence number overflow
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XfrmOutStateExpired:
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State is expired
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XfrmOutPolBlock:
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Policy discards
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XfrmOutPolDead:
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Policy is dead
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XfrmOutPolError:
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Policy error
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XfrmOutStateInvalid:
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State is invalid, perhaps expired
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