configuring broadcast traffic to heart commuication RH cluster Post: 302690711

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ieee80211_get_buffered_bc

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.

RETURN

       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 3.10					     June 2014						   IEEE80211_GET_BUFFER(9)