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IP_DISCARD_REASON enumeration (fwpsk.h)

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The IP_DISCARD_REASON enum defines the possible reasons that data is discarded by one of the network layers.

Syntax

typedef enum {
  IpDiscardBadSourceAddress,
  IpDiscardNotLocallyDestined,
  IpDiscardProtocolUnreachable,
  IpDiscardPortUnreachable,
  IpDiscardBadLength,
  IpDiscardMalformedHeader,
  IpDiscardNoRoute,
  IpDiscardBeyondScope,
  IpDiscardInspectionDrop,
  IpDiscardTooManyDecapsulations,
  IpDiscardAdministrativelyProhibited,
  IpDiscardBadChecksum,
  IpDiscardFirstFragmentIncomplete,
  IpDiscardHeaderNotContiguous,
  IpDiscardHeaderNotAligned,
  IpDiscardReceivePathMax,
  IpDiscardHopLimitExceeded,
  IpDiscardAddressUnreachable,
  IpDiscardRscPacket,
  IpDiscardSourceViolation,
  IpDiscardForwardPathMax,
  IpDiscardArbitrationUnhandled,
  IpDiscardInspectionAbsorb,
  IpDiscardDontFragmentMtuExceeded,
  IpDiscardBufferLengthExceeded,
  IpDiscardAddressResolutionTimeout,
  IpDiscardAddressResolutionFailure,
  IpDiscardIpsecFailure,
  IpDiscardExtensionHeadersFailure,
  IpDiscardAllocationFailure,
  IpDiscardIpsnpiClientDrop,
  IpDiscardUnsupportedOffload,
  IpDiscardRoutingFailure,
  IpDiscardAncillaryDataFailure,
  IpDiscardRawDataFailure,
  IpDiscardSessionStateFailure,
  IpDiscardIpsnpiAllocationFailure,
  IpDiscardIpsnpiModifiedButNotForwarded,
  IpDiscardIpsnpiNoNextHop,
  IpDiscardIpsnpiNoCompartment,
  IpDiscardIpsnpiNoInterface,
  IpDiscardIpsnpiNoSubInterface,
  IpDiscardIpsnpiInterfaceDisabled,
  IpDiscardIpsnpiSegmentationFailed,
  IpDiscardIpsnpiNoEthernetHeader,
  IpDiscardIpsnpiUnexpectedFragment,
  IpDiscardIpsnpiUnsupportedInterfaceType,
  IpDiscardIpsnpiInvalidLsoInfo,
  IpDiscardIpsnpiInvalidUsoInfo,
  IpDiscardInternalError,
  IpDiscardAdministrativelyConfigured,
  IpDiscardBadOption,
  IpDiscardLoopbackDisallowed,
  IpDiscardSmallerScope,
  IpDiscardQueueFull,
  IpDiscardInterfaceDisabled,
  IpDiscardNlClientDiscard,
  IpDiscardIpsnpiUroSegmentSizeExceedsMtu,
  IpDiscardSwUsoFailure,
  IpDiscardMax
} IP_DISCARD_REASON, *PIP_DISCARD_REASON;

Constants

 
IpDiscardBadSourceAddress
The outgoing packet's source address is a multicast address, a broadcast address, or an IPv6 address that contains an embedded IPv4 loopback or unspecified address.
IpDiscardNotLocallyDestined
The received packet's destination address doesn't exist on the system, and no appropriate forwarding interface exists.
IpDiscardProtocolUnreachable
There's either no transport protocol handler for the received packet or the transport protocol handler refused to process the packet.
IpDiscardPortUnreachable
There's no application that is receiving packets on the received packet's destination port.
IpDiscardBadLength
A length field specified within the received packet is inconsistent with the packet's length.
IpDiscardMalformedHeader
The received packet contains a recognized extension header or option whose contents are invalid.
IpDiscardNoRoute
The received packet can't be forwarded to its destination address because the system's routing table doesn't contain a route to that destination.
IpDiscardBeyondScope
The received packet can't be forwarded because the packet's incoming and outgoing network interfaces have different zone indexes for the packet's zone level.
IpDiscardInspectionDrop
The packet was dropped during inspection due to failing security checks or protocol compliance issues.
IpDiscardTooManyDecapsulations
The received packet cannot be forwarded to its destination address because there are too many decapsulations.
IpDiscardAdministrativelyProhibited
The packet was discarded due to administrative policies prohibiting its transmission or receipt.
IpDiscardBadChecksum
The packet was discarded because its checksum was incorrect, indicating potential data corruption.
IpDiscardFirstFragmentIncomplete
The first fragment of the packet was incomplete, leading to the discard of the entire packet.
IpDiscardHeaderNotContiguous
The packet's header wasn't contiguous in memory, causing it to be discarded.
IpDiscardHeaderNotAligned
The packet header wasn't properly aligned, leading to its discard due to formatting issues.
IpDiscardReceivePathMax
The packet was discarded as it exceeded the maximum length allowed on the receive path.
IpDiscardHopLimitExceeded
The received packet's hop limit or time-to-live limit has been exceeded.
IpDiscardAddressUnreachable
The outgoing packet can't be sent to the packet's destination address either because the destination doesn't exist or packets aren't allowed to be sent to that destination.
IpDiscardRscPacket
The outgoing packet can't be sent because it is a receive-side coalesced (RSC) packet.
IpDiscardSourceViolation
The packet was discarded because it violated source address validation checks.
IpDiscardForwardPathMax
The packet exceeded the maximum path length for forwarding and was discarded.
IpDiscardArbitrationUnhandled
The packet was discarded because it required arbitration that wasn't handled.
IpDiscardInspectionAbsorb
The outgoing packet cannot be sent because WFP took ownership of the packet.
IpDiscardDontFragmentMtuExceeded
The packet was discarded because it exceeded the MTU size and had the Don't Fragment bit set.
IpDiscardBufferLengthExceeded
The packet was discarded because it exceeded the buffer length limitations.
IpDiscardAddressResolutionTimeout
The packet was discarded due to a timeout in address resolution.
IpDiscardAddressResolutionFailure
The packet was discarded because address resolution failed.
IpDiscardIpsecFailure
The packet was discarded due to an IPsec processing failure.
IpDiscardExtensionHeadersFailure
The packet was discarded because of a failure related to processing IPv6 extension headers.
IpDiscardAllocationFailure
The packet was discarded due to a failure in allocating necessary resources.
IpDiscardIpsnpiClientDrop
The packet was discarded by an IPSNPI client due to unspecified reasons.
IpDiscardUnsupportedOffload
The packet was discarded because it required an unsupported offload operation.
IpDiscardRoutingFailure
The packet was discarded due to a failure in routing.
IpDiscardAncillaryDataFailure
The packet was discarded because of a failure related to ancillary data processing.
IpDiscardRawDataFailure
The packet was discarded due to a failure in processing raw data.
IpDiscardSessionStateFailure
The packet was discarded because of a failure related to session state management.
IpDiscardIpsnpiAllocationFailure
The packet was discarded due to an allocation failure within the IPSNPI subsystem.
IpDiscardIpsnpiModifiedButNotForwarded
The packet was modified by IPSNPI but not forwarded, leading to its discard.
IpDiscardIpsnpiNoNextHop
The packet was discarded because no next hop could be determined in the IPSNPI subsystem.
IpDiscardIpsnpiNoCompartment
The packet was discarded due to a missing compartment in the IPSNPI subsystem.
IpDiscardIpsnpiNoInterface
The packet was discarded because no interface was found in the IPSNPI subsystem.
IpDiscardIpsnpiNoSubInterface
The packet was discarded due to the absence of a sub-interface in the IPSNPI subsystem.
IpDiscardIpsnpiInterfaceDisabled
The packet was discarded because the interface in the IPSNPI subsystem was disabled.
IpDiscardIpsnpiSegmentationFailed
The packet was discarded due to a failure in segmentation within the IPSNPI subsystem.
IpDiscardIpsnpiNoEthernetHeader
The packet was discarded because it lacked an Ethernet header in the IPSNPI subsystem.
IpDiscardIpsnpiUnexpectedFragment
The packet was discarded because it was an unexpected fragment in the IPSNPI subsystem.
IpDiscardIpsnpiUnsupportedInterfaceType
The packet was discarded due to an unsupported interface type in the IPSNPI subsystem.
IpDiscardIpsnpiInvalidLsoInfo
The packet was discarded because of invalid Large Send Offload (LSO) information in the IPSNPI subsystem.
IpDiscardIpsnpiInvalidUsoInfo
The packet was discarded due to invalid UDP Segmentation Offload (USO) information in the IPSNPI subsystem.
IpDiscardInternalError
The packet was discarded due to an internal error within the system.
IpDiscardAdministrativelyConfigured
The packet was discarded due to an administrative configuration that prevented its processing.
IpDiscardBadOption
The packet was discarded because it contained a bad option or an option that couldn't be processed.
IpDiscardLoopbackDisallowed
The packet was discarded because loopback was disallowed for its type or destination.
IpDiscardSmallerScope
The packet was discarded because its scope was smaller than required for successful delivery.
IpDiscardQueueFull
The packet was discarded because the processing queue was full.
IpDiscardInterfaceDisabled
The packet was discarded because the interface it arrived on was disabled.
IpDiscardNlClientDiscard
The packet was discarded by a Netlink client due to unspecified reasons.
IpDiscardIpsnpiUroSegmentSizeExceedsMtu
The packet was discarded because the segment size for UDP RSC Offload (URO) exceeded the MTU in the IPSNPI subsystem.
IpDiscardSwUsoFailure
The packet was discarded due to a UDP Segmentation Offload (USO) failure.
IpDiscardMax
The maximum value for enumeration.

Requirements

Requirement Value
Minimum supported client Windows 11, version 24H2
Header fwpsk.h