b43: claim support for IBSS RSN

The driver now claims to support IBSS/RSN. Group key configuration in hardware
is skipped. Software encryption is used for multicast communications.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index c79e6638c88d599e6efdcd048c9145b869d6211a..05ea95ba6de0f7a016facb78a132961e08992192 100644 (file)
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -4010,6 +4010,20 @@ static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
        if (modparam_nohwcrypt)
                return -ENOSPC; /* User disabled HW-crypto */
 
+       if ((vif->type == NL80211_IFTYPE_ADHOC ||
+            vif->type == NL80211_IFTYPE_MESH_POINT) &&
+           (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
+            key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
+           !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
+               /*
+                * For now, disable hw crypto for the RSN IBSS group keys. This
+                * could be optimized in the future, but until that gets
+                * implemented, use of software crypto for group addressed
+                * frames is a acceptable to allow RSN IBSS to be used.
+                */
+               return -EOPNOTSUPP;
+       }
+
        mutex_lock(&wl->mutex);
 
        dev = wl->current_dev;
@@ -5275,6 +5289,8 @@ static struct b43_wl *b43_wireless_init(struct b43_bus_dev *dev)
                BIT(NL80211_IFTYPE_WDS) |
                BIT(NL80211_IFTYPE_ADHOC);
 
+       hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
+
        hw->queues = modparam_qos ? B43_QOS_QUEUE_NUM : 1;
        wl->mac80211_initially_registered_queues = hw->queues;
        hw->max_rates = 2;