ieee80211_get_buffered_bc(9) [suse man page]

IEEE80211_GET_BUFFER(9) 				     Advanced driver interface					   IEEE80211_GET_BUFFER(9)

NAME

       ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames

SYNOPSIS

       struct sk_buff * ieee80211_get_buffered_bc(struct ieee80211_hw * hw, struct ieee80211_vif * vif);

ARGUMENTS

       hw
	   pointer as obtained from ieee80211_alloc_hw.

       vif

	   struct ieee80211_vif pointer from the add_interface callback.

DESCRIPTION

       Function for accessing buffered broadcast and multicast frames. If hardware/firmware does not implement buffering of broadcast/multicast
       frames when power saving is used, 802.11 code buffers them in the host memory. The low-level driver uses this function to fetch next
       buffered frame. In most cases, this is used when generating beacon frame. This function returns a pointer to the next buffered skb or NULL
       if no more buffered frames are available.

NOTE

       buffered frames are returned only after DTIM beacon frame was generated with ieee80211_beacon_get and the low-level driver must thus call
       ieee80211_beacon_get first.  ieee80211_get_buffered_bc returns NULL if the previous generated beacon was not DTIM, so the low-level driver
       does not need to check for DTIM beacons separately and should be able to use common code for all beacons.

AUTHOR

       Johannes Berg <johannes@sipsolutions.net>
	   Author.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010						   IEEE80211_GET_BUFFER(9)

STRUCT 
IEEE80211_CON(9) 				  The basic mac80211 driver inte				   STRUCT IEEE80211_CON(9)

NAME

       struct_ieee80211_conf - configuration of the device

SYNOPSIS

       struct ieee80211_conf {
	 u32 flags;
	 int power_level;
	 int dynamic_ps_timeout;
	 int max_sleep_period;
	 u16 listen_interval;
	 u8 ps_dtim_period;
	 u8 long_frame_max_tx_count;
	 u8 short_frame_max_tx_count;
	 struct cfg80211_chan_def chandef;
	 bool radar_enabled;
	 enum ieee80211_smps_mode smps_mode;
       };

MEMBERS

       flags
	   configuration flags defined above

       power_level
	   requested transmit power (in dBm), backward compatibility value only that is set to the minimum of all interfaces

       dynamic_ps_timeout
	   The dynamic powersave timeout (in ms), see the powersave documentation below. This variable is valid only when the CONF_PS flag is set.

       max_sleep_period
	   the maximum number of beacon intervals to sleep for before checking the beacon for a TIM bit (managed mode only); this value will be
	   only achievable between DTIM frames, the hardware needs to check for the multicast traffic bit in DTIM beacons. This variable is valid
	   only when the CONF_PS flag is set.

       listen_interval
	   listen interval in units of beacon interval

       ps_dtim_period
	   The DTIM period of the AP we're connected to, for use in power saving. Power saving will not be enabled until a beacon has been
	   received and the DTIM period is known.

       long_frame_max_tx_count
	   Maximum number of transmissions for a "long" frame (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, but actually
	   means the number of transmissions not the number of retries

       short_frame_max_tx_count
	   Maximum number of transmissions for a "short" frame, called "dot11ShortRetryLimit" in 802.11, but actually means the number of
	   transmissions not the number of retries

       chandef
	   the channel definition to tune to

       radar_enabled
	   whether radar detection is enabled

       smps_mode
	   spatial multiplexing powersave mode; note that IEEE80211_SMPS_STATIC is used when the device is not configured for an HT channel. Note
	   that this is only valid if channel contexts are not used, otherwise each channel context has the number of chains listed.

DESCRIPTION

       This struct indicates how the driver shall configure the hardware.

AUTHOR

       Johannes Berg <johannes@sipsolutions.net>
	   Author.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						   STRUCT IEEE80211_CON(9)