STRUCT IEEE80211_RX_ - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2.6.
Note : The basic mac80211 driver inte
NAMEstruct_ieee80211_rx_status − receive status
SYNOPSISstruct ieee80211_rx_status {
u64 mactime;
u32 device_timestamp;
u32 ampdu_reference;
u32 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;
};
MEMBERSmactime 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_* freq frequency the radio was tuned to when receiving this frame, in MHz 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
DESCRIPTIONThe 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).
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