mac80211: allow configure_filter callback to sleep

Over time, a whole bunch of drivers have come up
with their own scheme to delay the configure_filter
operation to a workqueue. To be able to simplify
things, allow configure_filter to sleep, and add
a new prepare_multicast callback that drivers that
need the multicast address list implement. This new
callback must be atomic, but most drivers either
don't care or just calculate a hash which can be
done atomically and then uploaded to the hardware
non-atomically.

A cursory look suggests that at76c50x-usb, ar9170,
mwl8k (which is actually very broken now), rt2x00,
wl1251, wl1271 and zd1211 should make use of this
new capability.

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

2 files changed, 2 insertions, 6 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251_main.c b/drivers/net/wireless/wl12xx/wl1251_main.c
index 7148934e464d..5809ef5b18f8 100644
--- a/drivers/net/wireless/wl12xx/wl1251_main.c
+++ b/drivers/net/wireless/wl12xx/wl1251_main.c
@@ -652,9 +652,7 @@ out:
 
 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
                                        unsigned int changed,
-                                       unsigned int *total,
-                                       int mc_count,
-                                       struct dev_addr_list *mc_list)
+                                       unsigned int *total,u64 multicast)
 {
         struct wl1251 *wl = hw->priv;
 
diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index 4102d590b798..754be8179307 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -793,9 +793,7 @@ out:
 
 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
                                        unsigned int changed,
-                                       unsigned int *total,
-                                       int mc_count,
-                                       struct dev_addr_list *mc_list)
+                                       unsigned int *total,u64 multicast)
 {
         struct wl1271 *wl = hw->priv;