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_SHORTPRE,
         RX_FLAG_HT,
         RX_FLAG_40MHZ,
         RX_FLAG_SHORT_GI,
         RX_FLAG_NO_SIGNAL_VAL,
         RX_FLAG_HT_GF,
         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_VHT,
         RX_FLAG_LDPC,
         RX_FLAG_ONLY_MONITOR,
         RX_FLAG_SKIP_MONITOR,
         RX_FLAG_STBC_MASK,
         RX_FLAG_10MHZ,
         RX_FLAG_5MHZ,
         RX_FLAG_AMSDU_MORE,
         RX_FLAG_RADIOTAP_VENDOR_DATA,
         RX_FLAG_MIC_STRIPPED,
         RX_FLAG_ALLOW_SAME_PN
       };

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/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_SHORTPRE
           Short preamble was used for this frame

       RX_FLAG_HT
           HT MCS was used and rate_idx is MCS index

       RX_FLAG_40MHZ
           HT40 (40 MHz) was used

       RX_FLAG_SHORT_GI
           Short guard interval was used

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

       RX_FLAG_HT_GF
           This frame was received in a HT-greenfield transmission, if the driver fills this
           value it should add IEEE80211_RADIOTAP_MCS_HAVE_FMT to hw.radiotap_mcs_details to
           advertise that fact

       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_VHT
           VHT MCS was used and rate_index is MCS index

       RX_FLAG_LDPC
           LDPC was used

       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_STBC_MASK
           STBC 2 bit bitmask. 1 - Nss=1, 2 - Nss=2, 3 - Nss=3

       RX_FLAG_10MHZ
           10 MHz (half channel) was used

       RX_FLAG_5MHZ
           5 MHz (quarter channel) was used

       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.

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

AUTHOR
       Johannes Berg <johannes AT sipsolutions.net>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   ENUM MAC80211_RX_FLA(9)