[rt2x00-users] [PATCHv2] rt2x00: Fix hw crypto in AP mode for some devices

[Helmut Schaa]

The BSSID register shouldn't be set in AP mode on some older devices (like
rt73usb) as it breaks hw crypto on these. However, rt2800 devices explicitly
need the BSSID register set to the same value as our own MAC address (only
in AP mode).

Hence, don't set the BSSID from rt2x00lib but move it down into rt2800 to
avoid problems on older devices.

This fixes a regression (at least for rt73usb) and avoids a new regression
for rt2800 devices in 2.6.36.

Reported-by: Johannes Stezenbach <js at sig21.net>
Reported-by: Lee <lee-in-berlin at web.de>
Signed-off-by: Helmut Schaa <helmut.schaa at googlemail.com>
---

Changes since v1:
* Use a temprary bool for updating since the flags variable is const here.
  I really don't know why I was so confused ...
* Rebased against current rt2x00 master tree

Tested against a rt3052 SoC device using WPA2-PSK in AP mode.

Gertjan, I've not added your Acked-by due to the code changes ...
Johannes, I've not added your Tested-by due to the code changes ...

Sorry for the confusion,
Helmut

 drivers/net/wireless/rt2x00/rt2800lib.c |   13 ++++++++++++-
 drivers/net/wireless/rt2x00/rt2x00mac.c |   10 ++--------
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 6fa6549..a53536d 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -1148,6 +1148,7 @@ void rt2800_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf,
 			struct rt2x00intf_conf *conf, const unsigned int flags)
 {
 	u32 reg;
+	bool update_bssid = false;
 
 	if (flags & CONFIG_UPDATE_TYPE) {
 		/*
@@ -1177,6 +1178,16 @@ void rt2800_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf,
 	}
 
 	if (flags & CONFIG_UPDATE_MAC) {
+		if (flags & CONFIG_UPDATE_TYPE &&
+		    conf->sync == TSF_SYNC_AP_NONE) {
+			/*
+			 * The BSSID register has to be set to our own mac
+			 * address in AP mode.
+			 */
+			memcpy(conf->bssid, conf->mac, sizeof(conf->mac));
+			update_bssid = true;
+		}
+
 		if (!is_zero_ether_addr((const u8 *)conf->mac)) {
 			reg = le32_to_cpu(conf->mac[1]);
 			rt2x00_set_field32(&reg, MAC_ADDR_DW1_UNICAST_TO_ME_MASK, 0xff);
@@ -1187,7 +1198,7 @@ void rt2800_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf,
 					      conf->mac, sizeof(conf->mac));
 	}
 
-	if (flags & CONFIG_UPDATE_BSSID) {
+	if ((flags & CONFIG_UPDATE_BSSID) || update_bssid) {
 		if (!is_zero_ether_addr((const u8 *)conf->bssid)) {
 			reg = le32_to_cpu(conf->bssid[1]);
 			rt2x00_set_field32(&reg, MAC_BSSID_DW1_BSS_ID_MASK, 3);
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index c3c206a..32a3b92 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -283,14 +283,8 @@ int rt2x00mac_add_interface(struct ieee80211_hw *hw,
 	 * invalid behavior in the device.
 	 */
 	memcpy(&intf->mac, vif->addr, ETH_ALEN);
-	if (vif->type == NL80211_IFTYPE_AP) {
-		memcpy(&intf->bssid, vif->addr, ETH_ALEN);
-		rt2x00lib_config_intf(rt2x00dev, intf, vif->type,
-				      intf->mac, intf->bssid);
-	} else {
-		rt2x00lib_config_intf(rt2x00dev, intf, vif->type,
-				      intf->mac, NULL);
-	}
+	rt2x00lib_config_intf(rt2x00dev, intf, vif->type,
+			      intf->mac, NULL);
 
 	/*
 	 * Some filters depend on the current working mode. We can force
-- 
1.7.1