struct_ieee80211_tx_rate(9) [centos man page]

STRUCT 
IEEE80211_TX_(9) 				  The basic mac80211 driver inte				   STRUCT IEEE80211_TX_(9)

NAME

       struct_ieee80211_tx_rate - rate selection/status

SYNOPSIS

       struct ieee80211_tx_rate {
	 s8 idx;
	 u16 count:5;
	 u16 flags:11;
       };

MEMBERS

       idx
	   rate index to attempt to send with

       count
	   number of tries in this rate before going to the next rate

       flags
	   rate control flags (enum mac80211_rate_control_flags)

DESCRIPTION

       A value of -1 for idx indicates an invalid rate and, if used in an array of retry rates, that no more rates should be tried.

       When used for transmit status reporting, the driver should always report the rate along with the flags it used.

       struct ieee80211_tx_info contains an array of these structs in the control information, and it will be filled by the rate control algorithm
       according to what should be sent. For example, if this array contains, in the format { <idx>, <count> } the information { 3, 2 }, { 2, 2 },
       { 1, 4 }, { -1, 0 }, { -1, 0 } then this means that the frame should be transmitted up to twice at rate 3, up to twice at rate 2, and up to
       four times at rate 1 if it doesn't get acknowledged. Say it gets acknowledged by the peer after the fifth attempt, the status information
       should then contain { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ... since it was transmitted twice at rate 3, twice at rate 2 and once at rate
       1 after which we received an acknowledgement.

AUTHOR

       Johannes Berg <johannes@sipsolutions.net>
	   Author.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						   STRUCT IEEE80211_TX_(9)

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;
	 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 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_*

       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 <johannes@sipsolutions.net>
	   Author.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						   STRUCT IEEE80211_RX_(9)