mac80211: add basic support for WoWLAN

This adds basic support for the new WoWLAN
configuration in mac80211. The behaviour is
completely offloaded to the driver though,
with two new callbacks (suspend/resume).

Options for the driver include a complete
reconfiguration after wakeup, and exposing
all the triggers it wants to support.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 042461710880..730778a2c90c 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -6,7 +6,7 @@
 #include "driver-ops.h"
 #include "led.h"
 
-int __ieee80211_suspend(struct ieee80211_hw *hw)
+int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 {
         struct ieee80211_local *local = hw_to_local(hw);
         struct ieee80211_sub_if_data *sdata;
@@ -47,6 +47,16 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
         cancel_work_sync(&local->dynamic_ps_enable_work);
         del_timer_sync(&local->dynamic_ps_timer);
 
+        local->wowlan = wowlan && local->open_count;
+        if (local->wowlan) {
+                int err = drv_suspend(local, wowlan);
+                if (err) {
+                        local->quiescing = false;
+                        return err;
+                }
+                goto suspend;
+        }
+
         /* disable keys */
         list_for_each_entry(sdata, &local->interfaces, list)
                 ieee80211_disable_keys(sdata);
@@ -104,6 +114,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
         if (local->open_count)
                 ieee80211_stop_device(local);
 
+ suspend:
         local->suspended = true;
         /* need suspended to be visible before quiescing is false */
         barrier();