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, 4 insertions, 0 deletions

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index d8be1986a108..cb326d36be9c 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -696,6 +696,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
                 WLAN_CIPHER_SUITE_AES_CMAC
         };
 
+        if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) &&
+            (!local->ops->suspend || !local->ops->resume))
+                return -EINVAL;
+
         if (hw->max_report_rates == 0)
                 hw->max_report_rates = hw->max_rates;