Bluetooth: Refactor connection request handling
The conditions for accepting an incoming connections are already non-trivial and will become more so once a white list is added. This patch breaks up the checks for when to reject the request by creating a helper function for it. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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@ -2121,10 +2121,21 @@ unlock:
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hci_conn_check_pending(hdev);
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}
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static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
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{
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struct hci_cp_reject_conn_req cp;
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bacpy(&cp.bdaddr, bdaddr);
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cp.reason = HCI_ERROR_REJ_BAD_ADDR;
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hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
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}
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static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
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{
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struct hci_ev_conn_request *ev = (void *) skb->data;
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int mask = hdev->link_mode;
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struct inquiry_entry *ie;
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struct hci_conn *conn;
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__u8 flags = 0;
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BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
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@ -2133,74 +2144,71 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
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mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
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&flags);
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if ((mask & HCI_LM_ACCEPT) &&
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!hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
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if (!(mask & HCI_LM_ACCEPT)) {
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hci_reject_conn(hdev, &ev->bdaddr);
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return;
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}
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if (!hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
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BDADDR_BREDR)) {
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/* Connection accepted */
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struct inquiry_entry *ie;
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struct hci_conn *conn;
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hci_reject_conn(hdev, &ev->bdaddr);
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return;
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}
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hci_dev_lock(hdev);
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/* Connection accepted */
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ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
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if (ie)
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memcpy(ie->data.dev_class, ev->dev_class, 3);
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hci_dev_lock(hdev);
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conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
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&ev->bdaddr);
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ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
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if (ie)
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memcpy(ie->data.dev_class, ev->dev_class, 3);
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conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
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&ev->bdaddr);
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if (!conn) {
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conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr);
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if (!conn) {
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conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr);
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if (!conn) {
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BT_ERR("No memory for new connection");
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hci_dev_unlock(hdev);
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return;
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}
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BT_ERR("No memory for new connection");
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hci_dev_unlock(hdev);
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return;
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}
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}
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memcpy(conn->dev_class, ev->dev_class, 3);
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memcpy(conn->dev_class, ev->dev_class, 3);
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hci_dev_unlock(hdev);
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hci_dev_unlock(hdev);
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if (ev->link_type == ACL_LINK ||
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(!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
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struct hci_cp_accept_conn_req cp;
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conn->state = BT_CONNECT;
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bacpy(&cp.bdaddr, &ev->bdaddr);
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if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
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cp.role = 0x00; /* Become master */
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else
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cp.role = 0x01; /* Remain slave */
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hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp),
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&cp);
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} else if (!(flags & HCI_PROTO_DEFER)) {
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struct hci_cp_accept_sync_conn_req cp;
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conn->state = BT_CONNECT;
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bacpy(&cp.bdaddr, &ev->bdaddr);
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cp.pkt_type = cpu_to_le16(conn->pkt_type);
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cp.tx_bandwidth = cpu_to_le32(0x00001f40);
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cp.rx_bandwidth = cpu_to_le32(0x00001f40);
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cp.max_latency = cpu_to_le16(0xffff);
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cp.content_format = cpu_to_le16(hdev->voice_setting);
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cp.retrans_effort = 0xff;
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hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
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sizeof(cp), &cp);
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} else {
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conn->state = BT_CONNECT2;
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hci_proto_connect_cfm(conn, 0);
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}
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} else {
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/* Connection rejected */
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struct hci_cp_reject_conn_req cp;
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if (ev->link_type == ACL_LINK ||
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(!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
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struct hci_cp_accept_conn_req cp;
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conn->state = BT_CONNECT;
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bacpy(&cp.bdaddr, &ev->bdaddr);
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cp.reason = HCI_ERROR_REJ_BAD_ADDR;
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hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
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if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
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cp.role = 0x00; /* Become master */
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else
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cp.role = 0x01; /* Remain slave */
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hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
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} else if (!(flags & HCI_PROTO_DEFER)) {
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struct hci_cp_accept_sync_conn_req cp;
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conn->state = BT_CONNECT;
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bacpy(&cp.bdaddr, &ev->bdaddr);
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cp.pkt_type = cpu_to_le16(conn->pkt_type);
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cp.tx_bandwidth = cpu_to_le32(0x00001f40);
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cp.rx_bandwidth = cpu_to_le32(0x00001f40);
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cp.max_latency = cpu_to_le16(0xffff);
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cp.content_format = cpu_to_le16(hdev->voice_setting);
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cp.retrans_effort = 0xff;
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hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
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&cp);
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} else {
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conn->state = BT_CONNECT2;
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hci_proto_connect_cfm(conn, 0);
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}
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}
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