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ieee80211_get_buffered_bc
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
ieee80211_get_buffered_bc - accessing buffered broadcast and multicast framesSYNOPSIS
- struct sk_buff * ieee80211_get_buffered_bc(struct ieee80211_hw * hw, struct ieee80211_vif * vif, struct ieee80211_tx_control * control);
ARGUMENTS
hw
- pointer as obtained from ieee80211_alloc_hw.
vif
struct ieee80211_vif pointer from struct ieee80211_if_init_conf.
control
- will be filled with information needed to send returned frame.
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
Contenus ©2006-2024 Benjamin Poulain
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