1 /******************************************************************************
3 * Copyright (C) 2014 Google, Inc.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 ******************************************************************************/
21 #include "allocator.h"
23 #include "hci_layer.h"
25 typedef void (*transmit_finished_cb)(BT_HDR *packet, bool all_fragments_sent);
26 typedef void (*packet_reassembled_cb)(BT_HDR *packet);
27 typedef void (*packet_fragmented_cb)(BT_HDR *packet, bool send_transmit_finished);
30 // Called for every packet fragment.
31 packet_fragmented_cb fragmented;
33 // Called for every completely reassembled packet.
34 packet_reassembled_cb reassembled;
36 // Called when the fragmenter finishes sending all requested fragments,
37 // but the packet has not been entirely sent.
38 transmit_finished_cb transmit_finished;
39 } packet_fragmenter_callbacks_t;
41 typedef struct packet_fragmenter_t {
42 // Initialize the fragmenter, specifying the |result_callbacks|.
43 void (*init)(const packet_fragmenter_callbacks_t *result_callbacks);
45 // Release all resources associated with the fragmenter.
46 void (*cleanup)(void);
48 // Fragments |packet| if necessary and hands off everything to the fragmented callback.
49 void (*fragment_and_dispatch)(BT_HDR *packet);
50 // If |packet| is a complete packet, forwards to the reassembled callback. Otherwise
51 // holds onto it until all fragments arrive, at which point the reassembled callback is called
52 // with the reassembled data.
53 void (*reassemble_and_dispatch)(BT_HDR *packet);
54 } packet_fragmenter_t;
56 const packet_fragmenter_t *packet_fragmenter_get_interface();
58 const packet_fragmenter_t *packet_fragmenter_get_test_interface(
59 const controller_t *controller_interface,
60 const allocator_t *buffer_allocator_interface);