Bluetooth: Support HCI_QUIRK_RAW_DEVICE for hci_vhci driver

This adds support for configuring the hci_vhci virtual controllers
as a raw-only device using HCI_QUIRK_RAW_DEVICE. This is useful for
testing the kernel internal infrastructure.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
index add1c6a..aa446c7 100644 (file)
--- a/drivers/bluetooth/hci_vhci.c
+++ b/drivers/bluetooth/hci_vhci.c
@@ -40,7 +40,7 @@
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
 
-#define VERSION "1.4"
+#define VERSION "1.5"
 
 static bool amp;
 
@@ -95,10 +95,21 @@ static int vhci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
        return 0;
 }
 
-static int vhci_create_device(struct vhci_data *data, __u8 dev_type)
+static int vhci_create_device(struct vhci_data *data, __u8 opcode)
 {
        struct hci_dev *hdev;
        struct sk_buff *skb;
+       __u8 dev_type;
+
+       /* bits 0-1 are dev_type (BR/EDR or AMP) */
+       dev_type = opcode & 0x03;
+
+       if (dev_type != HCI_BREDR && dev_type != HCI_AMP)
+               return -EINVAL;
+
+       /* bits 2-6 are reserved (must be zero) */
+       if (opcode & 0x7c)
+               return -EINVAL;
 
        skb = bt_skb_alloc(4, GFP_KERNEL);
        if (!skb)
@@ -121,6 +132,10 @@ static int vhci_create_device(struct vhci_data *data, __u8 dev_type)
        hdev->flush = vhci_flush;
        hdev->send  = vhci_send_frame;
 
+       /* bit 7 is for raw device */
+       if (opcode & 0x80)
+               set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
+
        if (hci_register_dev(hdev) < 0) {
                BT_ERR("Can't register HCI device");
                hci_free_dev(hdev);
@@ -132,7 +147,7 @@ static int vhci_create_device(struct vhci_data *data, __u8 dev_type)
        bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
 
        *skb_put(skb, 1) = 0xff;
-       *skb_put(skb, 1) = dev_type;
+       *skb_put(skb, 1) = opcode;
        put_unaligned_le16(hdev->id, skb_put(skb, 2));
        skb_queue_tail(&data->readq, skb);
 
@@ -146,7 +161,7 @@ static inline ssize_t vhci_get_user(struct vhci_data *data,
 {
        size_t len = iov_length(iov, count);
        struct sk_buff *skb;
-       __u8 pkt_type, dev_type;
+       __u8 pkt_type, opcode;
        unsigned long i;
        int ret;
 
@@ -190,7 +205,7 @@ static inline ssize_t vhci_get_user(struct vhci_data *data,
 
                cancel_delayed_work_sync(&data->open_timeout);
 
-               dev_type = *((__u8 *) skb->data);
+               opcode = *((__u8 *) skb->data);
                skb_pull(skb, 1);
 
                if (skb->len > 0) {
@@ -200,10 +215,7 @@ static inline ssize_t vhci_get_user(struct vhci_data *data,
 
                kfree_skb(skb);
 
-               if (dev_type != HCI_BREDR && dev_type != HCI_AMP)
-                       return -EINVAL;
-
-               ret = vhci_create_device(data, dev_type);
+               ret = vhci_create_device(data, opcode);
                break;
 
        default: