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mac80211: Use suitable semantics for beacon availability indication

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Currently beacon availability upon association is marked by have_beacon
flag of assoc_data structure that becomes unavailable when association
completes. However beacon availability indication is required also after
association to inform a driver. Currently dtim_period parameter is used
for this purpose. Move have_beacon flag to another structure, persistant
throughout a interface's life cycle. Use suitable sematics for beacon
availability indication.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
[fix another instance of BSS_CHANGED_DTIM_PERIOD in docs]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Alexander Bondar
2013-05-16 17:34:17 +03:00
committed by Johannes Berg
parent 482a9c74fa
commit 989c6505cd
5 changed files with 21 additions and 17 deletions
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8
include/net/mac80211.h
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@@ -217,8 +217,8 @@ struct ieee80211_chanctx_conf {
* @BSS_CHANGED_TXPOWER: TX power setting changed for this interface
* @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS)
* changed (currently only in P2P client mode, GO mode will be later)
* @BSS_CHANGED_DTIM_PERIOD: the DTIM period value was changed (set when
* it becomes valid, managed mode only)
* @BSS_CHANGED_BEACON_INFO: Data from the AP's beacon became available:
* currently dtim_period only is under consideration.
* @BSS_CHANGED_BANDWIDTH: The bandwidth used by this interface changed,
* note that this is only called when it changes after the channel
* context had been assigned.
@@ -244,7 +244,7 @@ enum ieee80211_bss_change {
BSS_CHANGED_PS = 1<<17,
BSS_CHANGED_TXPOWER = 1<<18,
BSS_CHANGED_P2P_PS = 1<<19,
BSS_CHANGED_DTIM_PERIOD = 1<<20,
BSS_CHANGED_BEACON_INFO = 1<<20,
BSS_CHANGED_BANDWIDTH = 1<<21,
/* when adding here, make sure to change ieee80211_reconfig */
@@ -288,7 +288,7 @@ enum ieee80211_rssi_event {
* IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag
* @dtim_period: num of beacons before the next DTIM, for beaconing,
* valid in station mode only if after the driver was notified
* with the %BSS_CHANGED_DTIM_PERIOD flag, will be non-zero then.
* with the %BSS_CHANGED_BEACON_INFO flag, will be non-zero then.
* @sync_tsf: last beacon's/probe response's TSF timestamp (could be old
* as it may have been received during scanning long ago). If the
* HW flag %IEEE80211_HW_TIMING_BEACON_ONLY is set, then this can