Search Linux Wireless

[PATCH v2 4/5] ath10k: protect wep tx key setup

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



All configuration sequences should be protected
with conf_mutex to avoid concurrent/conflicting
requests.

This should make sure that wep tx key setup is not
performed while hw is restarted (at least).

Signed-off-by: Michal Kazior <michal.kazior@xxxxxxxxx>
---
v2:
 * skip wep update if state != ON [Kalle]
 * add empty space before goto label [Kalle]

 drivers/net/wireless/ath/ath10k/mac.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 577a3a5..e474eca 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -1888,8 +1888,13 @@ static void ath10k_tx_wep_key_work(struct work_struct *work)
 						wep_key_work);
 	int ret, keyidx = arvif->def_wep_key_newidx;
 
+	mutex_lock(&arvif->ar->conf_mutex);
+
+	if (arvif->ar->state != ATH10K_STATE_ON)
+		goto unlock;
+
 	if (arvif->def_wep_key_idx == keyidx)
-		return;
+		goto unlock;
 
 	ath10k_dbg(ATH10K_DBG_MAC, "mac vdev %d set keyidx %d\n",
 		   arvif->vdev_id, keyidx);
@@ -1902,10 +1907,13 @@ static void ath10k_tx_wep_key_work(struct work_struct *work)
 		ath10k_warn("failed to update wep key index for vdev %d: %d\n",
 			    arvif->vdev_id,
 			    ret);
-		return;
+		goto unlock;
 	}
 
 	arvif->def_wep_key_idx = keyidx;
+
+unlock:
+	mutex_unlock(&arvif->ar->conf_mutex);
 }
 
 static void ath10k_tx_h_update_wep_key(struct sk_buff *skb)
-- 
1.8.5.3

--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Host AP]     [ATH6KL]     [Linux Wireless Personal Area Network]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Linux Kernel]     [IDE]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite Hiking]     [MIPS Linux]     [ARM Linux]     [Linux RAID]

  Powered by Linux