2012-03-31 23:35:54

by Antonio Quartulli

[permalink] [raw]
Subject: [PATCH] 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 <[email protected]>
---
drivers/net/wireless/b43/main.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index c79e663..05ea95b 100644
--- 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;
--
1.7.9.4