IP_DISCARD_REASON enumeration (fwpsk.h)

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