1 files changed, 81 insertions, 20 deletions

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 0029e178e52e..908fcd384ab4 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -60,8 +60,6 @@ static void hci_tx_task(unsigned long arg);
 
 static DEFINE_RWLOCK(hci_task_lock);
 
-static int enable_smp;
-
 /* HCI device list */
 LIST_HEAD(hci_dev_list);
 DEFINE_RWLOCK(hci_dev_list_lock);
@@ -148,7 +146,7 @@ static int __hci_request(struct hci_dev *hdev, void (*req)(struct hci_dev *hdev,
 
 	switch (hdev->req_status) {
 	case HCI_REQ_DONE:
-		err = -bt_err(hdev->req_result);
+		err = -bt_to_errno(hdev->req_result);
 		break;
 
 	case HCI_REQ_CANCELED:
@@ -542,7 +540,7 @@ int hci_dev_open(__u16 dev)
 		ret = __hci_request(hdev, hci_init_req, 0,
 					msecs_to_jiffies(HCI_INIT_TIMEOUT));
 
-		if (lmp_le_capable(hdev))
+		if (lmp_host_le_capable(hdev))
 			ret = __hci_request(hdev, hci_le_init_req, 0,
 					msecs_to_jiffies(HCI_INIT_TIMEOUT));
 
@@ -1059,6 +1057,42 @@ static int hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn,
 	return 0;
 }
 
+struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8])
+{
+	struct link_key *k;
+
+	list_for_each_entry(k, &hdev->link_keys, list) {
+		struct key_master_id *id;
+
+		if (k->type != HCI_LK_SMP_LTK)
+			continue;
+
+		if (k->dlen != sizeof(*id))
+			continue;
+
+		id = (void *) &k->data;
+		if (id->ediv == ediv &&
+				(memcmp(rand, id->rand, sizeof(id->rand)) == 0))
+			return k;
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL(hci_find_ltk);
+
+struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
+					bdaddr_t *bdaddr, u8 type)
+{
+	struct link_key *k;
+
+	list_for_each_entry(k, &hdev->link_keys, list)
+		if (k->type == type && bacmp(bdaddr, &k->bdaddr) == 0)
+			return k;
+
+	return NULL;
+}
+EXPORT_SYMBOL(hci_find_link_key_type);
+
 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 				bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len)
 {
@@ -1114,6 +1148,44 @@ int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 	return 0;
 }
 
+int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
+			u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16])
+{
+	struct link_key *key, *old_key;
+	struct key_master_id *id;
+	u8 old_key_type;
+
+	BT_DBG("%s addr %s", hdev->name, batostr(bdaddr));
+
+	old_key = hci_find_link_key_type(hdev, bdaddr, HCI_LK_SMP_LTK);
+	if (old_key) {
+		key = old_key;
+		old_key_type = old_key->type;
+	} else {
+		key = kzalloc(sizeof(*key) + sizeof(*id), GFP_ATOMIC);
+		if (!key)
+			return -ENOMEM;
+		list_add(&key->list, &hdev->link_keys);
+		old_key_type = 0xff;
+	}
+
+	key->dlen = sizeof(*id);
+
+	bacpy(&key->bdaddr, bdaddr);
+	memcpy(key->val, ltk, sizeof(key->val));
+	key->type = HCI_LK_SMP_LTK;
+	key->pin_len = key_size;
+
+	id = (void *) &key->data;
+	id->ediv = ediv;
+	memcpy(id->rand, rand, sizeof(id->rand));
+
+	if (new_key)
+		mgmt_new_key(hdev->id, key, old_key_type);
+
+	return 0;
+}
+
 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr)
 {
 	struct link_key *key;
@@ -1246,7 +1318,7 @@ int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr)
 	if (bacmp(bdaddr, BDADDR_ANY) == 0)
 		return -EBADF;
 
-	hci_dev_lock(hdev);
+	hci_dev_lock_bh(hdev);
 
 	if (hci_blacklist_lookup(hdev, bdaddr)) {
 		err = -EEXIST;
@@ -1266,7 +1338,7 @@ int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr)
 	err = 0;
 
 err:
-	hci_dev_unlock(hdev);
+	hci_dev_unlock_bh(hdev);
 	return err;
 }
 
@@ -1275,7 +1347,7 @@ int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr)
 	struct bdaddr_list *entry;
 	int err = 0;
 
-	hci_dev_lock(hdev);
+	hci_dev_lock_bh(hdev);
 
 	if (bacmp(bdaddr, BDADDR_ANY) == 0) {
 		hci_blacklist_clear(hdev);
@@ -1292,7 +1364,7 @@ int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr)
 	kfree(entry);
 
 done:
-	hci_dev_unlock(hdev);
+	hci_dev_unlock_bh(hdev);
 	return err;
 }
 
@@ -1368,14 +1440,6 @@ int hci_add_adv_entry(struct hci_dev *hdev,
 	return 0;
 }
 
-static struct crypto_blkcipher *alloc_cypher(void)
-{
-	if (enable_smp)
-		return crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC);
-
-	return ERR_PTR(-ENOTSUPP);
-}
-
 /* Register HCI device */
 int hci_register_dev(struct hci_dev *hdev)
 {
@@ -1460,7 +1524,7 @@ int hci_register_dev(struct hci_dev *hdev)
 	if (!hdev->workqueue)
 		goto nomem;
 
-	hdev->tfm = alloc_cypher();
+	hdev->tfm = crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC);
 	if (IS_ERR(hdev->tfm))
 		BT_INFO("Failed to load transform for ecb(aes): %ld",
 							PTR_ERR(hdev->tfm));
@@ -2352,6 +2416,3 @@ static void hci_cmd_task(unsigned long arg)
 		}
 	}
 }
-
-module_param(enable_smp, bool, 0644);
-MODULE_PARM_DESC(enable_smp, "Enable SMP support (LE only)");