rt2x00: Add RXDONE_CRYPTO_IV/ICV flags

Drivers should notify rt2x00lib when they provide
the IV/ICV data. This adds some flexibility to drivers
which can't provide all information.
	* rt2500usb provides ICV inside the frame
	* rt2800pci doesn't provide IV/ICV
	* rt2800usb doesn't provide IV/ICV
Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2500usb.c

@@ -1330,6 +1330,8 @@ static void rt2500usb_fill_rxdone(struct queue_entry *entry,
 	if (rxdesc->cipher != CIPHER_NONE) {
 		_rt2x00_desc_read(rxd, 2, &rxdesc->iv[0]);
 		_rt2x00_desc_read(rxd, 3, &rxdesc->iv[1]);
+		rxdesc->dev_flags |= RXDONE_CRYPTO_IV;
+
 		/* ICV is located at the end of frame */
 
 		/*

drivers/net/wireless/rt2x00/rt2x00dev.c

@@ -636,7 +636,8 @@ void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
 	 * provided seperately (through hardware descriptor)
 	 * in which case we should reinsert the data into the frame.
 	 */
-	if ((rxdesc.flags & RX_FLAG_IV_STRIPPED)) {
+	if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) &&
+	    (rxdesc.flags & RX_FLAG_IV_STRIPPED)) {
 		rt2x00crypto_rx_insert_iv(entry->skb, align,
 					  header_length, &rxdesc);
 	} else if (align) {

drivers/net/wireless/rt2x00/rt2x00queue.h

@@ -146,11 +146,15 @@ static inline struct skb_frame_desc* get_skb_frame_desc(struct sk_buff *skb)
  * @RXDONE_SIGNAL_PLCP: Signal field contains the plcp value.
  * @RXDONE_SIGNAL_BITRATE: Signal field contains the bitrate value.
  * @RXDONE_MY_BSS: Does this frame originate from device's BSS.
+ * @RXDONE_CRYPTO_IV: Driver provided IV/EIV data.
+ * @RXDONE_CRYPTO_ICV: Driver provided ICV data.
  */
 enum rxdone_entry_desc_flags {
 	RXDONE_SIGNAL_PLCP = 1 << 0,
 	RXDONE_SIGNAL_BITRATE = 1 << 1,
 	RXDONE_MY_BSS = 1 << 2,
+	RXDONE_CRYPTO_IV = 1 << 3,
+	RXDONE_CRYPTO_ICV = 1 << 4,
 };
 
 /**

drivers/net/wireless/rt2x00/rt61pci.c

@@ -1951,7 +1951,10 @@ static void rt61pci_fill_rxdone(struct queue_entry *entry,
 	if (rxdesc->cipher != CIPHER_NONE) {
 		_rt2x00_desc_read(entry_priv->desc, 2, &rxdesc->iv[0]);
 		_rt2x00_desc_read(entry_priv->desc, 3, &rxdesc->iv[1]);
+		rxdesc->dev_flags |= RXDONE_CRYPTO_IV;
+
 		_rt2x00_desc_read(entry_priv->desc, 4, &rxdesc->icv);
+		rxdesc->dev_flags |= RXDONE_CRYPTO_ICV;
 
 		/*
 		 * Hardware has stripped IV/EIV data from 802.11 frame during

drivers/net/wireless/rt2x00/rt73usb.c

@@ -1620,7 +1620,10 @@ static void rt73usb_fill_rxdone(struct queue_entry *entry,
 	if (rxdesc->cipher != CIPHER_NONE) {
 		_rt2x00_desc_read(rxd, 2, &rxdesc->iv[0]);
 		_rt2x00_desc_read(rxd, 3, &rxdesc->iv[1]);
+		rxdesc->dev_flags |= RXDONE_CRYPTO_IV;
+
 		_rt2x00_desc_read(rxd, 4, &rxdesc->icv);
+		rxdesc->dev_flags |= RXDONE_CRYPTO_ICV;
 
 		/*
 		 * Hardware has stripped IV/EIV data from 802.11 frame during