Bluetooth: Add read_local_oob_data management command

This patch adds a command to read local OOB data to the managment interface.
The command maps directly to the Read Local OOB Data HCI command.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

net/bluetooth/mgmt.c

@@ -1296,6 +1296,55 @@ failed:
 	return err;
 }
 
+static int read_local_oob_data(struct sock *sk, u16 index)
+{
+	struct hci_dev *hdev;
+	struct pending_cmd *cmd;
+	int err;
+
+	BT_DBG("hci%u", index);
+
+	hdev = hci_dev_get(index);
+	if (!hdev)
+		return cmd_status(sk, index, MGMT_OP_READ_LOCAL_OOB_DATA,
+									ENODEV);
+
+	hci_dev_lock_bh(hdev);
+
+	if (!test_bit(HCI_UP, &hdev->flags)) {
+		err = cmd_status(sk, index, MGMT_OP_READ_LOCAL_OOB_DATA,
+								ENETDOWN);
+		goto unlock;
+	}
+
+	if (!(hdev->features[6] & LMP_SIMPLE_PAIR)) {
+		err = cmd_status(sk, index, MGMT_OP_READ_LOCAL_OOB_DATA,
+								EOPNOTSUPP);
+		goto unlock;
+	}
+
+	if (mgmt_pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, index)) {
+		err = cmd_status(sk, index, MGMT_OP_READ_LOCAL_OOB_DATA, EBUSY);
+		goto unlock;
+	}
+
+	cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_DATA, index, NULL, 0);
+	if (!cmd) {
+		err = -ENOMEM;
+		goto unlock;
+	}
+
+	err = hci_send_cmd(hdev, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL);
+	if (err < 0)
+		mgmt_pending_remove(cmd);
+
+unlock:
+	hci_dev_unlock_bh(hdev);
+	hci_dev_put(hdev);
+
+	return err;
+}
+
 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
 {
 	unsigned char *buf;
@@ -1394,6 +1443,10 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
 	case MGMT_OP_SET_LOCAL_NAME:
 		err = set_local_name(sk, index, buf + sizeof(*hdr), len);
 		break;
+	case MGMT_OP_READ_LOCAL_OOB_DATA:
+		err = read_local_oob_data(sk, index);
+		break;
+
 	default:
 		BT_DBG("Unknown op %u", opcode);
 		err = cmd_status(sk, index, opcode, 0x01);
@@ -1723,3 +1776,33 @@ failed:
 		mgmt_pending_remove(cmd);
 	return err;
 }
+
+int mgmt_read_local_oob_data_reply_complete(u16 index, u8 *hash, u8 *randomizer,
+								u8 status)
+{
+	struct pending_cmd *cmd;
+	int err;
+
+	BT_DBG("hci%u status %u", index, status);
+
+	cmd = mgmt_pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, index);
+	if (!cmd)
+		return -ENOENT;
+
+	if (status) {
+		err = cmd_status(cmd->sk, index, MGMT_OP_READ_LOCAL_OOB_DATA,
+									EIO);
+	} else {
+		struct mgmt_rp_read_local_oob_data rp;
+
+		memcpy(rp.hash, hash, sizeof(rp.hash));
+		memcpy(rp.randomizer, randomizer, sizeof(rp.randomizer));
+
+		err = cmd_complete(cmd->sk, index, MGMT_OP_READ_LOCAL_OOB_DATA,
+							&rp, sizeof(rp));
+	}
+
+	mgmt_pending_remove(cmd);
+
+	return err;
+}