mac80211: wait for beacon before enabling powersave
Because DTIM information is required for powersave
but is only conveyed in beacons, wait for a beacon
before enabling powersave, and change the way the
information is conveyed to the driver accordingly.
mwl8k doesn't currently seem to implement PS but
requires the DTIM period in a different way; after
talking to Lennert we agreed to just have mwl8k do
the parsing itself in the finalize_join work.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index f64402f..1e9c930 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -186,7 +186,8 @@
* @use_short_slot: use short slot time (only relevant for ERP);
* if the hardware cannot handle this it must set the
* IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag
- * @dtim_period: num of beacons before the next DTIM, for PSM
+ * @dtim_period: num of beacons before the next DTIM, for beaconing,
+ * not valid in station mode (cf. hw conf ps_dtim_period)
* @timestamp: beacon timestamp
* @beacon_int: beacon interval
* @assoc_capability: capabilities taken from assoc resp
@@ -648,6 +649,9 @@
* 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.
+ * @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.
* @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.
@@ -674,6 +678,7 @@
int max_sleep_period;
u16 listen_interval;
+ u8 ps_dtim_period;
u8 long_frame_max_tx_count, short_frame_max_tx_count;