[Bluetooth] Integrate services into the driver model

This patch integrates the services of the Bluetooth protocols RFCOMM,
BNEP and HIDP into the driver model. This makes it possible to assign
the virtual TTY, network and input devices to a specific Bluetooth
connection.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index c6e3a2c27c6..03b5dadb495 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -40,6 +40,7 @@
 #include <linux/input.h>
 
 #include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
 #include <net/bluetooth/l2cap.h>
 
 #include "hidp.h"
@@ -528,6 +529,26 @@ static int hidp_session(void *arg)
 	return 0;
 }
 
+static struct device *hidp_get_device(struct hidp_session *session)
+{
+	bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src;
+	bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst;
+	struct hci_dev *hdev;
+	struct hci_conn *conn;
+
+	hdev = hci_get_route(dst, src);
+	if (!hdev)
+		return NULL;
+
+	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst);
+	if (!conn)
+		return NULL;
+
+	hci_dev_put(hdev);
+
+	return &conn->dev;
+}
+
 static inline void hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req)
 {
 	struct input_dev *input = session->input;
@@ -566,6 +587,8 @@ static inline void hidp_setup_input(struct hidp_session *session, struct hidp_co
 		input->relbit[0] |= BIT(REL_WHEEL);
 	}
 
+	input->cdev.dev = hidp_get_device(session);
+
 	input->event = hidp_input_event;
 
 	input_register_device(input);