nl80211/cfg80211: WoWLAN support

This is based on (but now quite far from) the
original work from Luis and Eliad. Add support
for configuring WoWLAN triggers, and getting
the configuration out again. Changes from the
original patchset are too numerous to list,
but one important change needs highlighting:
the suspend() callback is passed NULL for the
trigger configuration if userspace has not
configured WoWLAN at all.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/net/wireless/core.h b/net/wireless/core.h
index 26a0a084e16..7a18c10a7fb 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -70,6 +70,8 @@ struct cfg80211_registered_device {
         struct work_struct conn_work;
         struct work_struct event_work;
 
+        struct cfg80211_wowlan *wowlan;
+
         /* must be last because of the way we do wiphy_priv(),
          * and it should at least be aligned to NETDEV_ALIGN */
         struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
@@ -89,6 +91,18 @@ bool wiphy_idx_valid(int wiphy_idx)
         return wiphy_idx >= 0;
 }
 
+static inline void
+cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
+{
+        int i;
+
+        if (!rdev->wowlan)
+                return;
+        for (i = 0; i < rdev->wowlan->n_patterns; i++)
+                kfree(rdev->wowlan->patterns[i].mask);
+        kfree(rdev->wowlan->patterns);
+        kfree(rdev->wowlan);
+}
 
 extern struct workqueue_struct *cfg80211_wq;
 extern struct mutex cfg80211_mutex;