Skip group keys configuration in hardware in order to make IBSS RSN work.
Keys will be managed using software.
Signed-off-by: Antonio Quartulli <ordex@xxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/htc_drv_init.c | 2 ++
drivers/net/wireless/ath/ath9k/htc_drv_main.c | 15 +++++++++++++++
2 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index 9be10a2..fc7519c 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -741,6 +741,8 @@ static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
+ hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
+
hw->queues = 4;
hw->channel_change_time = 5000;
hw->max_listen_interval = 10;
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index ef4c606..06101b6 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -1409,6 +1409,21 @@ static int ath9k_htc_set_key(struct ieee80211_hw *hw,
if (htc_modparam_nohwcrypt)
return -ENOSPC;
+ 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 to use a modified key cache
+ * design to support per-STA RX GTK, 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(&priv->mutex);
ath_dbg(common, CONFIG, "Set HW Key\n");
ath9k_htc_ps_wakeup(priv);
--
1.7.3.4
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