static void hci_cmd_task(unsigned long arg);
static void hci_rx_task(unsigned long arg);
static void hci_tx_task(unsigned long arg);
-static void hci_notify(struct hci_dev *hdev, int event);
static DEFINE_RWLOCK(hci_task_lock);
hci_req_cancel(hdev, ENODEV);
hci_req_lock(hdev);
- /* Stop timer, it might be running */
- del_timer_sync(&hdev->cmd_timer);
-
if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
+ del_timer_sync(&hdev->cmd_timer);
hci_req_unlock(hdev);
return 0;
}
/* Drop last sent command */
if (hdev->sent_cmd) {
+ del_timer_sync(&hdev->cmd_timer);
kfree_skb(hdev->sent_cmd);
hdev->sent_cmd = NULL;
}
return NULL;
}
-int hci_add_link_key(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
- u8 *val, u8 type, u8 pin_len)
+static int hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn,
+ u8 key_type, u8 old_key_type)
+{
+ /* Legacy key */
+ if (key_type < 0x03)
+ return 1;
+
+ /* Debug keys are insecure so don't store them persistently */
+ if (key_type == HCI_LK_DEBUG_COMBINATION)
+ return 0;
+
+ /* Changed combination key and there's no previous one */
+ if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff)
+ return 0;
+
+ /* Security mode 3 case */
+ if (!conn)
+ return 1;
+
+ /* Neither local nor remote side had no-bonding as requirement */
+ if (conn->auth_type > 0x01 && conn->remote_auth > 0x01)
+ return 1;
+
+ /* Local side had dedicated bonding as requirement */
+ if (conn->auth_type == 0x02 || conn->auth_type == 0x03)
+ return 1;
+
+ /* Remote side had dedicated bonding as requirement */
+ if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03)
+ return 1;
+
+ /* If none of the above criteria match, then don't store the key
+ * persistently */
+ return 0;
+}
+
+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)
{
struct link_key *key, *old_key;
- u8 old_key_type;
+ u8 old_key_type, persistent;
old_key = hci_find_link_key(hdev, bdaddr);
if (old_key) {
old_key_type = old_key->type;
key = old_key;
} else {
- old_key_type = 0xff;
+ old_key_type = conn ? conn->key_type : 0xff;
key = kzalloc(sizeof(*key), GFP_ATOMIC);
if (!key)
return -ENOMEM;
BT_DBG("%s key for %s type %u", hdev->name, batostr(bdaddr), type);
+ /* Some buggy controller combinations generate a changed
+ * combination key for legacy pairing even when there's no
+ * previous key */
+ if (type == HCI_LK_CHANGED_COMBINATION &&
+ (!conn || conn->remote_auth == 0xff) &&
+ old_key_type == 0xff) {
+ type = HCI_LK_COMBINATION;
+ if (conn)
+ conn->key_type = type;
+ }
+
bacpy(&key->bdaddr, bdaddr);
memcpy(key->val, val, 16);
- key->type = type;
key->pin_len = pin_len;
- if (new_key)
- mgmt_new_key(hdev->id, key, old_key_type);
-
- if (type == 0x06)
+ if (type == HCI_LK_CHANGED_COMBINATION)
key->type = old_key_type;
+ else
+ key->type = type;
+
+ if (!new_key)
+ return 0;
+
+ persistent = hci_persistent_key(hdev, conn, type, old_key_type);
+
+ mgmt_new_key(hdev->id, key, persistent);
+
+ if (!persistent) {
+ list_del(&key->list);
+ kfree(key);
+ }
return 0;
}
tasklet_schedule(&hdev->cmd_task);
}
+struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
+ bdaddr_t *bdaddr)
+{
+ struct oob_data *data;
+
+ list_for_each_entry(data, &hdev->remote_oob_data, list)
+ if (bacmp(bdaddr, &data->bdaddr) == 0)
+ return data;
+
+ return NULL;
+}
+
+int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr)
+{
+ struct oob_data *data;
+
+ data = hci_find_remote_oob_data(hdev, bdaddr);
+ if (!data)
+ return -ENOENT;
+
+ BT_DBG("%s removing %s", hdev->name, batostr(bdaddr));
+
+ list_del(&data->list);
+ kfree(data);
+
+ return 0;
+}
+
+int hci_remote_oob_data_clear(struct hci_dev *hdev)
+{
+ struct oob_data *data, *n;
+
+ list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) {
+ list_del(&data->list);
+ kfree(data);
+ }
+
+ return 0;
+}
+
+int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
+ u8 *randomizer)
+{
+ struct oob_data *data;
+
+ data = hci_find_remote_oob_data(hdev, bdaddr);
+
+ if (!data) {
+ data = kmalloc(sizeof(*data), GFP_ATOMIC);
+ if (!data)
+ return -ENOMEM;
+
+ bacpy(&data->bdaddr, bdaddr);
+ list_add(&data->list, &hdev->remote_oob_data);
+ }
+
+ memcpy(data->hash, hash, sizeof(data->hash));
+ memcpy(data->randomizer, randomizer, sizeof(data->randomizer));
+
+ BT_DBG("%s for %s", hdev->name, batostr(bdaddr));
+
+ return 0;
+}
+
/* Register HCI device */
int hci_register_dev(struct hci_dev *hdev)
{
INIT_LIST_HEAD(&hdev->link_keys);
+ INIT_LIST_HEAD(&hdev->remote_oob_data);
+
INIT_WORK(&hdev->power_on, hci_power_on);
INIT_WORK(&hdev->power_off, hci_power_off);
setup_timer(&hdev->off_timer, hci_auto_off, (unsigned long) hdev);
hci_blacklist_clear(hdev);
hci_uuids_clear(hdev);
hci_link_keys_clear(hdev);
+ hci_remote_oob_data_clear(hdev);
hci_dev_unlock_bh(hdev);
__hci_dev_put(hdev);
EXPORT_SYMBOL(hci_recv_frame);
static int hci_reassembly(struct hci_dev *hdev, int type, void *data,
- int count, __u8 index, gfp_t gfp_mask)
+ int count, __u8 index)
{
int len = 0;
int hlen = 0;
break;
}
- skb = bt_skb_alloc(len, gfp_mask);
+ skb = bt_skb_alloc(len, GFP_ATOMIC);
if (!skb)
return -ENOMEM;
return -EILSEQ;
while (count) {
- rem = hci_reassembly(hdev, type, data, count,
- type - 1, GFP_ATOMIC);
+ rem = hci_reassembly(hdev, type, data, count, type - 1);
if (rem < 0)
return rem;
} else
type = bt_cb(skb)->pkt_type;
- rem = hci_reassembly(hdev, type, data,
- count, STREAM_REASSEMBLY, GFP_ATOMIC);
+ rem = hci_reassembly(hdev, type, data, count,
+ STREAM_REASSEMBLY);
if (rem < 0)
return rem;
read_unlock(&hci_task_lock);
}
-/* ----- HCI RX task (incoming data proccessing) ----- */
+/* ----- HCI RX task (incoming data processing) ----- */
/* ACL data packet */
static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb)
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