struct_ieee80211_rx_status(9) receive status

SYNOPSIS


struct ieee80211_rx_status {
u64 mactime;
u32 device_timestamp;
u32 ampdu_reference;
u32 flag;
u32 vendor_radiotap_bitmap;
u16 vendor_radiotap_len;
u16 freq;
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;
u8 vendor_radiotap_align;
u8 vendor_radiotap_oui[3];
u8 vendor_radiotap_subns;
};

MEMBERS

mactime

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

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_*

vendor_radiotap_bitmap

radiotap vendor namespace presence bitmap

vendor_radiotap_len

radiotap vendor namespace length

freq

frequency the radio was tuned to when receiving this frame, in MHz

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

vendor_radiotap_align

radiotap vendor namespace alignment. Note that the actual data must be at the start of the SKB data already.

vendor_radiotap_oui[3]

radiotap vendor namespace OUI

vendor_radiotap_subns

radiotap vendor sub namespace

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 <[email protected]>

Author.

COPYRIGHT