mac80211: Use suitable semantics for beacon availability indication

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>

1 files changed, 4 insertions, 4 deletions

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index cb37f82d8d09..a405a7a9775c 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -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