STRUCT IEEE80211_RX_(9)           The basic mac80211 driver inte          STRUCT IEEE80211_RX_(9)



NAME
       struct_ieee80211_rx_status - receive status

SYNOPSIS
       struct ieee80211_rx_status {
         u64 mactime;
         u64 boottime_ns;
         u32 device_timestamp;
         u32 ampdu_reference;
         u64 flag;
         u16 freq;
         u8 vht_flag;
         u8 rate_idx;
         u8 vht_nss;
         u8 rx_flags;
         u8 band;
         u8 antenna;
         s8 signal;
         u8 chains;
         s8 chain_signal[IEEE80211_MAX_CHAINS];
         u8 ampdu_delimiter_crc;
       };

MEMBERS
       mactime
           value in microseconds of the 64-bit Time Synchronization Function (TSF) timer when the
           first data symbol (MPDU) arrived at the hardware.

       boottime_ns
           CLOCK_BOOTTIME timestamp the frame was received at, this is needed only for beacons
           and probe responses that update the scan cache.

       device_timestamp
           arbitrary timestamp for the device, mac80211 doesn't use it but can store it and pass
           it back to the driver for synchronisation

       ampdu_reference
           A-MPDU reference number, must be a different value for each A-MPDU but the same for
           each subframe within one A-MPDU

       flag
           RX_FLAG_*

       freq
           frequency the radio was tuned to when receiving this frame, in MHz This field must be
           set for management frames, but isn't strictly needed for data (other) frames - for
           those it only affects radiotap reporting.

       vht_flag
           RX_VHT_FLAG_*

       rate_idx
           index of data rate into band's supported rates or MCS index if HT or VHT is used
           (RX_FLAG_HT/RX_FLAG_VHT)

       vht_nss
           number of streams (VHT only)

       rx_flags
           internal RX flags for mac80211

       band
           the active band when this frame was received

       antenna
           antenna used

       signal
           signal strength when receiving this frame, either in dBm, in dB or unspecified
           depending on the hardware capabilities flags IEEE80211_HW_SIGNAL_*

       chains
           bitmask of receive chains for which separate signal strength values were filled.

       chain_signal[IEEE80211_MAX_CHAINS]
           per-chain signal strength, in dBm (unlike signal, doesn't support dB or unspecified
           units)

       ampdu_delimiter_crc
           A-MPDU delimiter CRC

DESCRIPTION
       The low-level driver should provide this information (the subset supported by hardware) to
       the 802.11 code with each received frame, in the skb's control buffer (cb).

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

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   STRUCT IEEE80211_RX_(9)