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1 /******************************************************************************
2  *
3  *  Copyright 2001-2012 Broadcom Corporation
4  *
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:
8  *
9  *  http://www.apache.org/licenses/LICENSE-2.0
10  *
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.
16  *
17  ******************************************************************************/
18 
19 /******************************************************************************
20  *
21  *  This file contains internally used BNEP definitions
22  *
23  ******************************************************************************/
24 
25 #ifndef BNEP_INT_H
26 #define BNEP_INT_H
27 
28 #include "bnep_api.h"
29 #include "bt_common.h"
30 #include "bt_target.h"
31 #include "btu.h"
32 #include "osi/include/fixed_queue.h"
33 
34 /* BNEP frame types
35 */
36 #define BNEP_FRAME_GENERAL_ETHERNET 0x00
37 #define BNEP_FRAME_CONTROL 0x01
38 #define BNEP_FRAME_COMPRESSED_ETHERNET 0x02
39 #define BNEP_FRAME_COMPRESSED_ETHERNET_SRC_ONLY 0x03
40 #define BNEP_FRAME_COMPRESSED_ETHERNET_DEST_ONLY 0x04
41 
42 /* BNEP filter control message types
43 */
44 #define BNEP_CONTROL_COMMAND_NOT_UNDERSTOOD 0x00
45 #define BNEP_SETUP_CONNECTION_REQUEST_MSG 0x01
46 #define BNEP_SETUP_CONNECTION_RESPONSE_MSG 0x02
47 #define BNEP_FILTER_NET_TYPE_SET_MSG 0x03
48 #define BNEP_FILTER_NET_TYPE_RESPONSE_MSG 0x04
49 #define BNEP_FILTER_MULTI_ADDR_SET_MSG 0x05
50 #define BNEP_FILTER_MULTI_ADDR_RESPONSE_MSG 0x06
51 
52 /* BNEP header extension types
53 */
54 #define BNEP_EXTENSION_FILTER_CONTROL 0x00
55 
56 /* BNEP Setup Connection response codes
57 */
58 #define BNEP_SETUP_CONN_OK 0x0000
59 #define BNEP_SETUP_INVALID_DEST_UUID 0x0001
60 #define BNEP_SETUP_INVALID_SRC_UUID 0x0002
61 #define BNEP_SETUP_INVALID_UUID_SIZE 0x0003
62 #define BNEP_SETUP_CONN_NOT_ALLOWED 0x0004
63 
64 /* BNEP filter control response codes
65 */
66 #define BNEP_FILTER_CRL_OK 0x0000
67 #define BNEP_FILTER_CRL_UNSUPPORTED 0x0001
68 #define BNEP_FILTER_CRL_BAD_RANGE 0x0002
69 #define BNEP_FILTER_CRL_MAX_REACHED 0x0003
70 #define BNEP_FILTER_CRL_SECURITY_ERR 0x0004
71 
72 /* 802.1p protocol packet will have actual protocol field in side the payload */
73 #define BNEP_802_1_P_PROTOCOL 0x8100
74 
75 /* Timeout definitions.  */
76 /* Connection related timeout */
77 #define BNEP_CONN_TIMEOUT_MS (20 * 1000)
78 /* host response timeout */
79 #define BNEP_HOST_TIMEOUT_MS (200 * 1000)
80 #define BNEP_FILTER_SET_TIMEOUT_MS (10 * 1000)
81 
82 #define BNEP_MAX_RETRANSMITS 3
83 
84 /* Define the BNEP Connection Control Block
85 */
86 typedef struct {
87 #define BNEP_STATE_IDLE 0
88 #define BNEP_STATE_CONN_START 1
89 #define BNEP_STATE_CFG_SETUP 2
90 #define BNEP_STATE_CONN_SETUP 3
91 #define BNEP_STATE_SEC_CHECKING 4
92 #define BNEP_STATE_SETUP_RCVD 5
93 #define BNEP_STATE_CONNECTED 6
94   uint8_t con_state;
95 
96 #define BNEP_FLAGS_IS_ORIG 0x01
97 #define BNEP_FLAGS_HIS_CFG_DONE 0x02
98 #define BNEP_FLAGS_MY_CFG_DONE 0x04
99 #define BNEP_FLAGS_L2CAP_CONGESTED 0x08
100 #define BNEP_FLAGS_FILTER_RESP_PEND 0x10
101 #define BNEP_FLAGS_MULTI_RESP_PEND 0x20
102 #define BNEP_FLAGS_SETUP_RCVD 0x40
103 #define BNEP_FLAGS_CONN_COMPLETED 0x80
104   uint8_t con_flags;
105   BT_HDR* p_pending_data;
106 
107   uint16_t l2cap_cid;
108   RawAddress rem_bda;
109   alarm_t* conn_timer;
110   fixed_queue_t* xmit_q;
111 
112   uint16_t sent_num_filters;
113   uint16_t sent_prot_filter_start[BNEP_MAX_PROT_FILTERS];
114   uint16_t sent_prot_filter_end[BNEP_MAX_PROT_FILTERS];
115 
116   uint16_t sent_mcast_filters;
117   RawAddress sent_mcast_filter_start[BNEP_MAX_MULTI_FILTERS];
118   RawAddress sent_mcast_filter_end[BNEP_MAX_MULTI_FILTERS];
119 
120   uint16_t rcvd_num_filters;
121   uint16_t rcvd_prot_filter_start[BNEP_MAX_PROT_FILTERS];
122   uint16_t rcvd_prot_filter_end[BNEP_MAX_PROT_FILTERS];
123 
124   uint16_t rcvd_mcast_filters;
125   RawAddress rcvd_mcast_filter_start[BNEP_MAX_MULTI_FILTERS];
126   RawAddress rcvd_mcast_filter_end[BNEP_MAX_MULTI_FILTERS];
127 
128   uint16_t bad_pkts_rcvd;
129   uint8_t re_transmits;
130   uint16_t handle;
131   bluetooth::Uuid prv_src_uuid;
132   bluetooth::Uuid prv_dst_uuid;
133   bluetooth::Uuid src_uuid;
134   bluetooth::Uuid dst_uuid;
135 
136 } tBNEP_CONN;
137 
138 /*  The main BNEP control block
139 */
140 typedef struct {
141   tL2CAP_CFG_INFO l2cap_my_cfg; /* My L2CAP config     */
142   tBNEP_CONN bcb[BNEP_MAX_CONNECTIONS];
143 
144   tBNEP_CONNECT_IND_CB* p_conn_ind_cb;
145   tBNEP_CONN_STATE_CB* p_conn_state_cb;
146   tBNEP_DATA_IND_CB* p_data_ind_cb;
147   tBNEP_DATA_BUF_CB* p_data_buf_cb;
148   tBNEP_FILTER_IND_CB* p_filter_ind_cb;
149   tBNEP_MFILTER_IND_CB* p_mfilter_ind_cb;
150   tBNEP_TX_DATA_FLOW_CB* p_tx_data_flow_cb;
151 
152   tL2CAP_APPL_INFO reg_info;
153 
154   bool profile_registered; /* true when we got our BD addr */
155   uint8_t trace_level;
156 
157 } tBNEP_CB;
158 
159 /* Global BNEP data
160 */
161 extern tBNEP_CB bnep_cb;
162 
163 /* Functions provided by bnep_main.cc
164 */
165 extern tBNEP_RESULT bnep_register_with_l2cap(void);
166 extern void bnep_disconnect(tBNEP_CONN* p_bcb, uint16_t reason);
167 extern tBNEP_CONN* bnep_conn_originate(uint8_t* p_bd_addr);
168 extern void bnep_conn_timer_timeout(void* data);
169 extern void bnep_connected(tBNEP_CONN* p_bcb);
170 
171 /* Functions provided by bnep_utils.cc
172 */
173 extern tBNEP_CONN* bnepu_find_bcb_by_cid(uint16_t cid);
174 extern tBNEP_CONN* bnepu_find_bcb_by_bd_addr(const RawAddress& p_bda);
175 extern tBNEP_CONN* bnepu_allocate_bcb(const RawAddress& p_rem_bda);
176 extern void bnepu_release_bcb(tBNEP_CONN* p_bcb);
177 extern void bnepu_send_peer_our_filters(tBNEP_CONN* p_bcb);
178 extern void bnepu_send_peer_our_multi_filters(tBNEP_CONN* p_bcb);
179 extern bool bnepu_does_dest_support_prot(tBNEP_CONN* p_bcb, uint16_t protocol);
180 extern void bnepu_build_bnep_hdr(tBNEP_CONN* p_bcb, BT_HDR* p_buf,
181                                  uint16_t protocol,
182                                  const RawAddress* p_src_addr,
183                                  const RawAddress* p_dest_addr, bool ext_bit);
184 extern void test_bnepu_build_bnep_hdr(tBNEP_CONN* p_bcb, BT_HDR* p_buf,
185                                       uint16_t protocol, uint8_t* p_src_addr,
186                                       uint8_t* p_dest_addr, uint8_t type);
187 
188 extern tBNEP_CONN* bnepu_get_route_to_dest(uint8_t* p_bda);
189 extern void bnepu_check_send_packet(tBNEP_CONN* p_bcb, BT_HDR* p_buf);
190 extern void bnep_send_command_not_understood(tBNEP_CONN* p_bcb,
191                                              uint8_t cmd_code);
192 extern void bnepu_process_peer_filter_set(tBNEP_CONN* p_bcb, uint8_t* p_filters,
193                                           uint16_t len);
194 extern void bnepu_process_peer_filter_rsp(tBNEP_CONN* p_bcb, uint8_t* p_data);
195 extern void bnepu_process_multicast_filter_rsp(tBNEP_CONN* p_bcb,
196                                                uint8_t* p_data);
197 extern void bnep_send_conn_req(tBNEP_CONN* p_bcb);
198 extern void bnep_send_conn_responce(tBNEP_CONN* p_bcb, uint16_t resp_code);
199 extern void bnep_process_setup_conn_req(tBNEP_CONN* p_bcb, uint8_t* p_setup,
200                                         uint8_t len);
201 extern void bnep_process_setup_conn_responce(tBNEP_CONN* p_bcb,
202                                              uint8_t* p_setup);
203 extern uint8_t* bnep_process_control_packet(tBNEP_CONN* p_bcb, uint8_t* p,
204                                             uint16_t* len, bool is_ext);
205 extern void bnep_sec_check_complete(const RawAddress* bd_addr,
206                                     tBT_TRANSPORT trasnport, void* p_ref_data);
207 extern tBNEP_RESULT bnep_is_packet_allowed(tBNEP_CONN* p_bcb,
208                                            const RawAddress& p_dest_addr,
209                                            uint16_t protocol,
210                                            bool fw_ext_present, uint8_t* p_data,
211                                            uint16_t org_len);
212 
213 #endif
214