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att_eatt.h
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1 /*************************************************************************************************/
2 /*!
3  * \file
4  *
5  * \brief Enhanced ATT (EATT) main module.
6  *
7  * Copyright (c) 2019-2020 Packetcraft, Inc.
8  *
9  * Licensed under the Apache License, Version 2.0 (the "License");
10  * you may not use this file except in compliance with the License.
11  * You may obtain a copy of the License at
12  *
13  * http://www.apache.org/licenses/LICENSE-2.0
14  *
15  * Unless required by applicable law or agreed to in writing, software
16  * distributed under the License is distributed on an "AS IS" BASIS,
17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18  * See the License for the specific language governing permissions and
19  * limitations under the License.
20  */
21 /*************************************************************************************************/
22 #ifndef EATT_MAIN_H
23 #define EATT_MAIN_H
24 
25 #include "wsf_queue.h"
26 #include "wsf_timer.h"
27 #include "l2c_api.h"
28 #include "dm_api.h"
29 #include "att_api.h"
30 
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34 
35 /**************************************************************************************************
36  Data Types
37 **************************************************************************************************/
38 
39 /* EATT channel control block. */
40 typedef struct
41 {
42  uint16_t cid; /* L2CAP channel identifier. */
43  uint16_t priority; /* Slot priority */
44  uint16_t peerMtu; /* Peer MTU of L2CAP channel */
45  uint16_t localMtu; /* Local MTU of L2CAP channel */
46  uint16_t localMps; /* Local MPS of L2CAP channel */
47  bool_t inUse; /* L2CAP channel is open */
48 } eattChanCb_t;
49 
50 /* EATT connection control block. */
51 typedef struct
52 {
53  uint8_t state; /* Connection state. */
54  uint16_t pendingMtu; /* Pending MTU */
55  uint16_t pendingMps; /* Pending MPS */
56  uint16_t connInterval; /* The connection interval. */
57  wsfTimer_t backoffTimer; /* Backoff timer for L2CAP en conn req collisions. */
58  eattChanCb_t *pChanCb; /* Channel control block list. */
59 } eattConnCb_t;
60 
61 /* EATT main control block. */
62 typedef struct
63 {
64  eattConnCb_t ccb[DM_CONN_MAX]; /* Connection control blocks. */
65  l2cCocRegId_t cocRegId; /* L2CAP COC registration ID. */
66 } eattCb_t;
67 
68 extern eattCb_t eattCb;
69 
70 /**************************************************************************************************
71  Function Prototypes
72 **************************************************************************************************/
73 
74 uint16_t eattGetCid(dmConnId_t connId, uint8_t slot);
75 uint8_t eattGetSlotId(dmConnId_t connId, uint16_t cid);
76 eattConnCb_t *eattGetConnCb(dmConnId_t connId);
77 void eattHandler(wsfMsgHdr_t *pMsg);
78 void eattExecCallback(dmConnId_t connId, uint8_t event, uint8_t status);
79 
80 #ifdef __cplusplus
81 };
82 #endif
83 
84 #endif /* EATT_MAIN_H */
dmConnId_t
uint8_t dmConnId_t
Connection identifier.
Definition: dm_api.h:588
eattCb_t
Definition: att_eatt.h:62
l2cCocRegId_t
uint16_t l2cCocRegId_t
Connection oriented channel registration ID.
Definition: l2c_api.h:100
eattConnCb_t
Definition: att_eatt.h:51
dm_api.h
Device Manager subsystem API.
wsfTimer_tag
Timer structure.
Definition: wsf_timer.h:53
wsf_queue.h
General purpose queue service.
DM_CONN_MAX
#define DM_CONN_MAX
Maximum number of connections.
Definition: cfg_stack.h:81
eattChanCb_t
Definition: att_eatt.h:40
wsf_timer.h
Timer service.
att_api.h
Attribute protocol client and server API.
wsfMsgHdr_t
Common message structure passed to event handler.
Definition: wsf_os.h:106
l2c_api.h
L2CAP subsystem API.
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