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 "btm_int.h"
32 #include "btu.h"
33 #include "osi/include/fixed_queue.h"
34 
35 /* BNEP frame types
36 */
37 #define BNEP_FRAME_GENERAL_ETHERNET 0x00
38 #define BNEP_FRAME_CONTROL 0x01
39 #define BNEP_FRAME_COMPRESSED_ETHERNET 0x02
40 #define BNEP_FRAME_COMPRESSED_ETHERNET_SRC_ONLY 0x03
41 #define BNEP_FRAME_COMPRESSED_ETHERNET_DEST_ONLY 0x04
42 
43 /* BNEP filter control message types
44 */
45 #define BNEP_CONTROL_COMMAND_NOT_UNDERSTOOD 0x00
46 #define BNEP_SETUP_CONNECTION_REQUEST_MSG 0x01
47 #define BNEP_SETUP_CONNECTION_RESPONSE_MSG 0x02
48 #define BNEP_FILTER_NET_TYPE_SET_MSG 0x03
49 #define BNEP_FILTER_NET_TYPE_RESPONSE_MSG 0x04
50 #define BNEP_FILTER_MULTI_ADDR_SET_MSG 0x05
51 #define BNEP_FILTER_MULTI_ADDR_RESPONSE_MSG 0x06
52 
53 /* BNEP header extension types
54 */
55 #define BNEP_EXTENSION_FILTER_CONTROL 0x00
56 
57 /* BNEP Setup Connection response codes
58 */
59 #define BNEP_SETUP_CONN_OK 0x0000
60 #define BNEP_SETUP_INVALID_DEST_UUID 0x0001
61 #define BNEP_SETUP_INVALID_SRC_UUID 0x0002
62 #define BNEP_SETUP_INVALID_UUID_SIZE 0x0003
63 #define BNEP_SETUP_CONN_NOT_ALLOWED 0x0004
64 
65 /* BNEP filter control response codes
66 */
67 #define BNEP_FILTER_CRL_OK 0x0000
68 #define BNEP_FILTER_CRL_UNSUPPORTED 0x0001
69 #define BNEP_FILTER_CRL_BAD_RANGE 0x0002
70 #define BNEP_FILTER_CRL_MAX_REACHED 0x0003
71 #define BNEP_FILTER_CRL_SECURITY_ERR 0x0004
72 
73 /* 802.1p protocol packet will have actual protocol field in side the payload */
74 #define BNEP_802_1_P_PROTOCOL 0x8100
75 
76 /* Timeout definitions.  */
77 /* Connection related timeout */
78 #define BNEP_CONN_TIMEOUT_MS (20 * 1000)
79 /* host response timeout */
80 #define BNEP_HOST_TIMEOUT_MS (200 * 1000)
81 #define BNEP_FILTER_SET_TIMEOUT_MS (10 * 1000)
82 
83 /* Define the Out-Flow default values. */
84 #define BNEP_OFLOW_QOS_FLAG 0
85 #define BNEP_OFLOW_SERV_TYPE 0
86 #define BNEP_OFLOW_TOKEN_RATE 0
87 #define BNEP_OFLOW_TOKEN_BUCKET_SIZE 0
88 #define BNEP_OFLOW_PEAK_BANDWIDTH 0
89 #define BNEP_OFLOW_LATENCY 0
90 #define BNEP_OFLOW_DELAY_VARIATION 0
91 
92 /* Define the In-Flow default values. */
93 #define BNEP_IFLOW_QOS_FLAG 0
94 #define BNEP_IFLOW_SERV_TYPE 0
95 #define BNEP_IFLOW_TOKEN_RATE 0
96 #define BNEP_IFLOW_TOKEN_BUCKET_SIZE 0
97 #define BNEP_IFLOW_PEAK_BANDWIDTH 0
98 #define BNEP_IFLOW_LATENCY 0
99 #define BNEP_IFLOW_DELAY_VARIATION 0
100 
101 #define BNEP_FLUSH_TO 0xFFFF
102 
103 #define BNEP_MAX_RETRANSMITS 3
104 
105 /* Define the BNEP Connection Control Block
106 */
107 typedef struct {
108 #define BNEP_STATE_IDLE 0
109 #define BNEP_STATE_CONN_START 1
110 #define BNEP_STATE_CFG_SETUP 2
111 #define BNEP_STATE_CONN_SETUP 3
112 #define BNEP_STATE_SEC_CHECKING 4
113 #define BNEP_STATE_SETUP_RCVD 5
114 #define BNEP_STATE_CONNECTED 6
115   uint8_t con_state;
116 
117 #define BNEP_FLAGS_IS_ORIG 0x01
118 #define BNEP_FLAGS_HIS_CFG_DONE 0x02
119 #define BNEP_FLAGS_MY_CFG_DONE 0x04
120 #define BNEP_FLAGS_L2CAP_CONGESTED 0x08
121 #define BNEP_FLAGS_FILTER_RESP_PEND 0x10
122 #define BNEP_FLAGS_MULTI_RESP_PEND 0x20
123 #define BNEP_FLAGS_SETUP_RCVD 0x40
124 #define BNEP_FLAGS_CONN_COMPLETED 0x80
125   uint8_t con_flags;
126   BT_HDR* p_pending_data;
127 
128   uint16_t l2cap_cid;
129   RawAddress rem_bda;
130   uint16_t rem_mtu_size;
131   alarm_t* conn_timer;
132   fixed_queue_t* xmit_q;
133 
134   uint16_t sent_num_filters;
135   uint16_t sent_prot_filter_start[BNEP_MAX_PROT_FILTERS];
136   uint16_t sent_prot_filter_end[BNEP_MAX_PROT_FILTERS];
137 
138   uint16_t sent_mcast_filters;
139   RawAddress sent_mcast_filter_start[BNEP_MAX_MULTI_FILTERS];
140   RawAddress sent_mcast_filter_end[BNEP_MAX_MULTI_FILTERS];
141 
142   uint16_t rcvd_num_filters;
143   uint16_t rcvd_prot_filter_start[BNEP_MAX_PROT_FILTERS];
144   uint16_t rcvd_prot_filter_end[BNEP_MAX_PROT_FILTERS];
145 
146   uint16_t rcvd_mcast_filters;
147   RawAddress rcvd_mcast_filter_start[BNEP_MAX_MULTI_FILTERS];
148   RawAddress rcvd_mcast_filter_end[BNEP_MAX_MULTI_FILTERS];
149 
150   uint16_t bad_pkts_rcvd;
151   uint8_t re_transmits;
152   uint16_t handle;
153   bluetooth::Uuid prv_src_uuid;
154   bluetooth::Uuid prv_dst_uuid;
155   bluetooth::Uuid src_uuid;
156   bluetooth::Uuid dst_uuid;
157 
158 } tBNEP_CONN;
159 
160 /*  The main BNEP control block
161 */
162 typedef struct {
163   tL2CAP_CFG_INFO l2cap_my_cfg; /* My L2CAP config     */
164   tBNEP_CONN bcb[BNEP_MAX_CONNECTIONS];
165 
166   tBNEP_CONNECT_IND_CB* p_conn_ind_cb;
167   tBNEP_CONN_STATE_CB* p_conn_state_cb;
168   tBNEP_DATA_IND_CB* p_data_ind_cb;
169   tBNEP_DATA_BUF_CB* p_data_buf_cb;
170   tBNEP_FILTER_IND_CB* p_filter_ind_cb;
171   tBNEP_MFILTER_IND_CB* p_mfilter_ind_cb;
172   tBNEP_TX_DATA_FLOW_CB* p_tx_data_flow_cb;
173 
174   tL2CAP_APPL_INFO reg_info;
175 
176   bool profile_registered; /* true when we got our BD addr */
177   uint8_t trace_level;
178 
179 } tBNEP_CB;
180 
181 /* Global BNEP data
182 */
183 extern tBNEP_CB bnep_cb;
184 
185 /* Functions provided by bnep_main.cc
186 */
187 extern tBNEP_RESULT bnep_register_with_l2cap(void);
188 extern void bnep_disconnect(tBNEP_CONN* p_bcb, uint16_t reason);
189 extern tBNEP_CONN* bnep_conn_originate(uint8_t* p_bd_addr);
190 extern void bnep_conn_timer_timeout(void* data);
191 extern void bnep_connected(tBNEP_CONN* p_bcb);
192 
193 /* Functions provided by bnep_utils.cc
194 */
195 extern tBNEP_CONN* bnepu_find_bcb_by_cid(uint16_t cid);
196 extern tBNEP_CONN* bnepu_find_bcb_by_bd_addr(const RawAddress& p_bda);
197 extern tBNEP_CONN* bnepu_allocate_bcb(const RawAddress& p_rem_bda);
198 extern void bnepu_release_bcb(tBNEP_CONN* p_bcb);
199 extern void bnepu_send_peer_our_filters(tBNEP_CONN* p_bcb);
200 extern void bnepu_send_peer_our_multi_filters(tBNEP_CONN* p_bcb);
201 extern bool bnepu_does_dest_support_prot(tBNEP_CONN* p_bcb, uint16_t protocol);
202 extern void bnepu_build_bnep_hdr(tBNEP_CONN* p_bcb, BT_HDR* p_buf,
203                                  uint16_t protocol,
204                                  const RawAddress* p_src_addr,
205                                  const RawAddress* p_dest_addr, bool ext_bit);
206 extern void test_bnepu_build_bnep_hdr(tBNEP_CONN* p_bcb, BT_HDR* p_buf,
207                                       uint16_t protocol, uint8_t* p_src_addr,
208                                       uint8_t* p_dest_addr, uint8_t type);
209 
210 extern tBNEP_CONN* bnepu_get_route_to_dest(uint8_t* p_bda);
211 extern void bnepu_check_send_packet(tBNEP_CONN* p_bcb, BT_HDR* p_buf);
212 extern void bnep_send_command_not_understood(tBNEP_CONN* p_bcb,
213                                              uint8_t cmd_code);
214 extern void bnepu_process_peer_filter_set(tBNEP_CONN* p_bcb, uint8_t* p_filters,
215                                           uint16_t len);
216 extern void bnepu_process_peer_filter_rsp(tBNEP_CONN* p_bcb, uint8_t* p_data);
217 extern void bnepu_process_multicast_filter_rsp(tBNEP_CONN* p_bcb,
218                                                uint8_t* p_data);
219 extern void bnep_send_conn_req(tBNEP_CONN* p_bcb);
220 extern void bnep_send_conn_responce(tBNEP_CONN* p_bcb, uint16_t resp_code);
221 extern void bnep_process_setup_conn_req(tBNEP_CONN* p_bcb, uint8_t* p_setup,
222                                         uint8_t len);
223 extern void bnep_process_setup_conn_responce(tBNEP_CONN* p_bcb,
224                                              uint8_t* p_setup);
225 extern uint8_t* bnep_process_control_packet(tBNEP_CONN* p_bcb, uint8_t* p,
226                                             uint16_t* len, bool is_ext);
227 extern void bnep_sec_check_complete(const RawAddress* bd_addr,
228                                     tBT_TRANSPORT trasnport, void* p_ref_data,
229                                     uint8_t result);
230 extern tBNEP_RESULT bnep_is_packet_allowed(tBNEP_CONN* p_bcb,
231                                            const RawAddress& p_dest_addr,
232                                            uint16_t protocol,
233                                            bool fw_ext_present, uint8_t* p_data,
234                                            uint16_t org_len);
235 
236 #endif
237