Bluetooth: Move SMP (de)initialization to smp.c

As preparation for moving SMP to use l2cap_chan infrastructure we need
to move the (de)initialization functions to smp.c (where they'll
eventually need access to the local L2CAP channel callbacks).
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/bluetooth/hci_core.c

@@ -1764,34 +1764,6 @@ static void hci_init4_req(struct hci_request *req, unsigned long opt)
 	}
 }
 
-static int hci_register_smp(struct hci_dev *hdev)
-{
-	int err;
-
-	BT_DBG("%s", hdev->name);
-
-	hdev->tfm_aes = crypto_alloc_blkcipher("ecb(aes)", 0,
-					       CRYPTO_ALG_ASYNC);
-	if (IS_ERR(hdev->tfm_aes)) {
-		BT_ERR("Unable to create crypto context");
-		err = PTR_ERR(hdev->tfm_aes);
-		hdev->tfm_aes = NULL;
-		return err;
-	}
-
-	return 0;
-}
-
-static void hci_unregister_smp(struct hci_dev *hdev)
-{
-	BT_DBG("%s", hdev->name);
-
-	if (hdev->tfm_aes) {
-		crypto_free_blkcipher(hdev->tfm_aes);
-		hdev->tfm_aes = NULL;
-	}
-}
-
 static int __hci_init(struct hci_dev *hdev)
 {
 	int err;
@@ -1927,7 +1899,7 @@ static int __hci_init(struct hci_dev *hdev)
 				   hdev->debugfs,
 				   &hdev->discov_interleaved_timeout);
 
-		hci_register_smp(hdev);
+		smp_register(hdev);
 	}
 
 	return 0;
@@ -4224,7 +4196,7 @@ void hci_unregister_dev(struct hci_dev *hdev)
 		rfkill_destroy(hdev->rfkill);
 	}
 
-	hci_unregister_smp(hdev);
+	smp_unregister(hdev);
 
 	device_del(&hdev->dev);
 

net/bluetooth/smp.c

@@ -1455,3 +1455,29 @@ int smp_distribute_keys(struct l2cap_conn *conn)
 
 	return 0;
 }
+
+int smp_register(struct hci_dev *hdev)
+{
+	BT_DBG("%s", hdev->name);
+
+	hdev->tfm_aes = crypto_alloc_blkcipher("ecb(aes)", 0,
+					       CRYPTO_ALG_ASYNC);
+	if (IS_ERR(hdev->tfm_aes)) {
+		int err = PTR_ERR(hdev->tfm_aes);
+		BT_ERR("Unable to create crypto context");
+		hdev->tfm_aes = NULL;
+		return err;
+	}
+
+	return 0;
+}
+
+void smp_unregister(struct hci_dev *hdev)
+{
+	BT_DBG("%s", hdev->name);
+
+	if (hdev->tfm_aes) {
+		crypto_free_blkcipher(hdev->tfm_aes);
+		hdev->tfm_aes = NULL;
+	}
+}

net/bluetooth/smp.h

@@ -136,4 +136,7 @@ bool smp_irk_matches(struct crypto_blkcipher *tfm, u8 irk[16],
 		     bdaddr_t *bdaddr);
 int smp_generate_rpa(struct crypto_blkcipher *tfm, u8 irk[16], bdaddr_t *rpa);
 
+int smp_register(struct hci_dev *hdev);
+void smp_unregister(struct hci_dev *hdev);
+
 #endif /* __SMP_H */