[Bluetooth] Allow vendor specific packet types

The vendor packet type 0xff is not handled at the moment. This patch
corrects this behaviour and also adapts the security filter for this
packet type.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/net/bluetooth/hci.h

@@ -108,7 +108,7 @@ enum {
 #define HCI_ACLDATA_PKT		0x02
 #define HCI_SCODATA_PKT		0x03
 #define HCI_EVENT_PKT		0x04
-#define HCI_UNKNOWN_PKT		0xff
+#define HCI_VENDOR_PKT		0xff
 
 /* HCI Packet types */
 #define HCI_DM1		0x0008

net/bluetooth/hci_sock.c

@@ -111,7 +111,8 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb)
 		/* Apply filter */
 		flt = &hci_pi(sk)->filter;
 
-		if (!test_bit((skb->pkt_type & HCI_FLT_TYPE_BITS), &flt->type_mask))
+		if (!test_bit((skb->pkt_type == HCI_VENDOR_PKT) ?
+				0 : (skb->pkt_type & HCI_FLT_TYPE_BITS), &flt->type_mask))
 			continue;
 
 		if (skb->pkt_type == HCI_EVENT_PKT) {