3 files changed, 27 insertions, 3 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 1f4ea74bf4ca..40136cf63fa4 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -751,6 +751,7 @@ static int ath_key_config(struct ath_common *common,
         struct ath_hw *ah = common->ah;
         struct ath9k_keyval hk;
         const u8 *mac = NULL;
+        u8 gmac[ETH_ALEN];
         int ret = 0;
         int idx;
 
@@ -774,9 +775,30 @@ static int ath_key_config(struct ath_common *common,
         memcpy(hk.kv_val, key->key, key->keylen);
 
         if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
-                /* For now, use the default keys for broadcast keys. This may
-                 * need to change with virtual interfaces. */
-                idx = key->keyidx;
+
+                if (key->ap_addr) {
+                        /*
+                         * Group keys on hardware that supports multicast frame
+                         * key search use a mac that is the sender's address with
+                         * the high bit set instead of the app-specified address.
+                         */
+                        memcpy(gmac, key->ap_addr, ETH_ALEN);
+                        gmac[0] |= 0x80;
+                        mac = gmac;
+
+                        if (key->alg == ALG_TKIP)
+                                idx = ath_reserve_key_cache_slot_tkip(common);
+                        else
+                                idx = ath_reserve_key_cache_slot(common);
+                        if (idx < 0)
+                                mac = NULL; /* no free key cache entries */
+                }
+
+                if (!mac) {
+                        /* For now, use the default keys for broadcast keys. This may
+                         * need to change with virtual interfaces. */
+                        idx = key->keyidx;
+                }
         } else if (key->keyidx) {
                 if (WARN_ON(!sta))
                         return -EOPNOTSUPP;
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index c49e6adcd8fa..63e9d37e3e71 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -793,6 +793,7 @@ struct ieee80211_key_conf {
         u8 iv_len;
         u8 hw_key_idx;
         u8 flags;
+        u8 *ap_addr;
         s8 keyidx;
         u8 keylen;
         u8 key[0];
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 8160d9c5372e..75705bd41956 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -139,6 +139,7 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
                                      struct ieee80211_sub_if_data,
                                      u.ap);
 
+        key->conf.ap_addr = sdata->dev->dev_addr;
         ret = drv_set_key(key->local, SET_KEY, sdata, sta, &key->conf);
 
         if (!ret) {