| 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;
u32 flag;
u16 freq;
u8 enc_flags;
u8 encoding:2;
u8 bw:3;
u8 he_ru:3;
u8 he_gi:2;
u8 he_dcm:1;
u8 rate_idx;
u8 nss;
u8 rx_flags;
u8 band;
u8 antenna;
s8 signal;
u8 chains;
s8 chain_signal[IEEE80211_MAX_CHAINS];
u8 ampdu_delimiter_crc;
u8 zero_length_psdu_type;
};
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.
enc_flags
uses bits from enum mac80211_rx_encoding_flags
encoding
enum mac80211_rx_encoding
bw
enum rate_info_bw
he_ru
HE RU, from enum nl80211_he_ru_alloc
he_gi
HE GI, from enum nl80211_he_gi
he_dcm
HE DCM value
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)
nss
number of streams (VHT and HE 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
zero_length_psdu_type
radiotap type of the 0-length PSDU
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@sipsolutions.net>
Author.
COPYRIGHT¶
| June 2023 | Kernel Hackers Manual 3.10 |