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  4. enum_mac80211_rx_flags(9)

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ENUM MAC80211_RX_FLA(9) The basic mac80211 driver inte ENUM MAC80211_RX_FLA(9)

NAME

enum_mac80211_rx_flags - receive flags

SYNOPSIS

enum mac80211_rx_flags {


  RX_FLAG_MMIC_ERROR,


  RX_FLAG_DECRYPTED,


  RX_FLAG_MACTIME_PLCP_START,


  RX_FLAG_MMIC_STRIPPED,


  RX_FLAG_IV_STRIPPED,


  RX_FLAG_FAILED_FCS_CRC,


  RX_FLAG_FAILED_PLCP_CRC,


  RX_FLAG_MACTIME_START,


  RX_FLAG_NO_SIGNAL_VAL,


  RX_FLAG_AMPDU_DETAILS,


  RX_FLAG_PN_VALIDATED,


  RX_FLAG_DUP_VALIDATED,


  RX_FLAG_AMPDU_LAST_KNOWN,


  RX_FLAG_AMPDU_IS_LAST,


  RX_FLAG_AMPDU_DELIM_CRC_ERROR,


  RX_FLAG_AMPDU_DELIM_CRC_KNOWN,


  RX_FLAG_MACTIME_END,


  RX_FLAG_ONLY_MONITOR,


  RX_FLAG_SKIP_MONITOR,


  RX_FLAG_AMSDU_MORE,


  RX_FLAG_RADIOTAP_VENDOR_DATA,


  RX_FLAG_MIC_STRIPPED,


  RX_FLAG_ALLOW_SAME_PN,


  RX_FLAG_ICV_STRIPPED,


  RX_FLAG_AMPDU_EOF_BIT,


  RX_FLAG_AMPDU_EOF_BIT_KNOWN,


  RX_FLAG_RADIOTAP_HE,


  RX_FLAG_RADIOTAP_HE_MU,


  RX_FLAG_RADIOTAP_LSIG,


  RX_FLAG_NO_PSDU
};

CONSTANTS

RX_FLAG_MMIC_ERROR

Michael MIC error was reported on this frame. Use together with RX_FLAG_MMIC_STRIPPED.

RX_FLAG_DECRYPTED

This frame was decrypted in hardware.

RX_FLAG_MACTIME_PLCP_START

The timestamp passed in the RX status (mactime field) is valid and contains the time the SYNC preamble was received.

RX_FLAG_MMIC_STRIPPED

the Michael MIC is stripped off this frame, verification has been done by the hardware.

RX_FLAG_IV_STRIPPED

The IV and ICV are stripped from this frame. If this flag is set, the stack cannot do any replay detection hence the driver or hardware will have to do that.

RX_FLAG_FAILED_FCS_CRC

Set this flag if the FCS check failed on the frame.

RX_FLAG_FAILED_PLCP_CRC

Set this flag if the PCLP check failed on the frame.

RX_FLAG_MACTIME_START

The timestamp passed in the RX status (mactime field) is valid and contains the time the first symbol of the MPDU was received. This is useful in monitor mode and for proper IBSS merging.

RX_FLAG_NO_SIGNAL_VAL

The signal strength value is not present. Valid only for data frames (mainly A-MPDU)

RX_FLAG_AMPDU_DETAILS

A-MPDU details are known, in particular the reference number (ampdu_reference) must be populated and be a distinct number for each A-MPDU

RX_FLAG_PN_VALIDATED

Currently only valid for CCMP/GCMP frames, this flag indicates that the PN was verified for replay protection. Note that this flag is also currently only supported when a frame is also decrypted (ie. RX_FLAG_DECRYPTED must be set)

RX_FLAG_DUP_VALIDATED

The driver should set this flag if it did de-duplication by itself.

RX_FLAG_AMPDU_LAST_KNOWN

last subframe is known, should be set on all subframes of a single A-MPDU

RX_FLAG_AMPDU_IS_LAST

this subframe is the last subframe of the A-MPDU

RX_FLAG_AMPDU_DELIM_CRC_ERROR

A delimiter CRC error has been detected on this subframe

RX_FLAG_AMPDU_DELIM_CRC_KNOWN

The delimiter CRC field is known (the CRC is stored in the ampdu_delimiter_crc field)

RX_FLAG_MACTIME_END

The timestamp passed in the RX status (mactime field) is valid and contains the time the last symbol of the MPDU (including FCS) was received.

RX_FLAG_ONLY_MONITOR

Report frame only to monitor interfaces without processing it in any regular way. This is useful if drivers offload some frames but still want to report them for sniffing purposes.

RX_FLAG_SKIP_MONITOR

Process and report frame to all interfaces except monitor interfaces. This is useful if drivers offload some frames but still want to report them for sniffing purposes.

RX_FLAG_AMSDU_MORE

Some drivers may prefer to report separate A-MSDU subframes instead of a one huge frame for performance reasons. All, but the last MSDU from an A-MSDU should have this flag set. E.g. if an A-MSDU has 3 frames, the first 2 must have the flag set, while the 3rd (last) one must not have this flag set. The flag is used to deal with retransmission/duplication recovery properly since A-MSDU subframes share the same sequence number. Reported subframes can be either regular MSDU or singly A-MSDUs. Subframes must not be interleaved with other frames.

RX_FLAG_RADIOTAP_VENDOR_DATA

This frame contains vendor-specific radiotap data in the skb->data (before the frame) as described by the struct ieee80211_vendor_radiotap.

RX_FLAG_MIC_STRIPPED

The mic was stripped of this packet. Decryption was done by the hardware

RX_FLAG_ALLOW_SAME_PN

Allow the same PN as same packet before. This is used for AMSDU subframes which can have the same PN as the first subframe.

RX_FLAG_ICV_STRIPPED

The ICV is stripped from this frame. CRC checking must be done in the hardware.

RX_FLAG_AMPDU_EOF_BIT

Value of the EOF bit in the A-MPDU delimiter for this frame

RX_FLAG_AMPDU_EOF_BIT_KNOWN

The EOF value is known

RX_FLAG_RADIOTAP_HE

HE radiotap data is present (struct ieee80211_radiotap_he, mac80211 will fill in

- DATA3_DATA_MCS - DATA3_DATA_DCM - DATA3_CODING - DATA5_GI - DATA5_DATA_BW_RU_ALLOC - DATA6_NSTS - DATA3_STBC

from the RX info data, so leave those zeroed when building this data)

RX_FLAG_RADIOTAP_HE_MU

HE MU radiotap data is present (struct ieee80211_radiotap_he_mu)

RX_FLAG_RADIOTAP_LSIG

L-SIG radiotap data is present

RX_FLAG_NO_PSDU

use the frame only for radiotap reporting, with the “0-length PSDU” field included there. The value for it is in struct ieee80211_rx_status. Note that if this value isn't known the frame shouldn't be reported.

DESCRIPTION

These flags are used with the flag member of struct ieee80211_rx_status.

AUTHOR

Johannes Berg <johannes@sipsolutions.net>

Author.

COPYRIGHT

June 2023 Kernel Hackers Manual 3.10