1 /** @file 2 * @brief Internal APIs for Bluetooth L2CAP BR/EDR handling. 3 */ 4 5 /* 6 * Copyright (c) 2015-2016 Intel Corporation 7 * 8 * SPDX-License-Identifier: Apache-2.0 9 */ 10 11 #include <zephyr/bluetooth/l2cap.h> 12 #include <zephyr/sys/iterable_sections.h> 13 #include "l2cap_br_interface.h" 14 15 #define BT_L2CAP_CID_BR_SIG 0x0001 16 #define BT_L2CAP_CID_BR_SMP 0x0007 17 #define BT_L2CAP_PSM_RFCOMM 0x0003 18 19 struct bt_l2cap_hdr { 20 uint16_t len; 21 uint16_t cid; 22 } __packed; 23 24 struct bt_l2cap_sig_hdr { 25 uint8_t code; 26 uint8_t ident; 27 uint16_t len; 28 } __packed; 29 30 #define BT_L2CAP_REJ_NOT_UNDERSTOOD 0x0000 31 #define BT_L2CAP_REJ_MTU_EXCEEDED 0x0001 32 #define BT_L2CAP_REJ_INVALID_CID 0x0002 33 34 #define BT_L2CAP_CMD_REJECT 0x01 35 struct bt_l2cap_cmd_reject { 36 uint16_t reason; 37 uint8_t data[0]; 38 } __packed; 39 40 struct bt_l2cap_cmd_reject_cid_data { 41 uint16_t scid; 42 uint16_t dcid; 43 } __packed; 44 45 #define BT_L2CAP_CONN_REQ 0x02 46 struct bt_l2cap_conn_req { 47 uint16_t psm; 48 uint16_t scid; 49 } __packed; 50 51 /* command statuses in response */ 52 #define BT_L2CAP_CS_NO_INFO 0x0000 53 #define BT_L2CAP_CS_AUTHEN_PEND 0x0001 54 55 /* valid results in conn response on BR/EDR */ 56 #define BT_L2CAP_BR_SUCCESS 0x0000 57 #define BT_L2CAP_BR_PENDING 0x0001 58 #define BT_L2CAP_BR_ERR_PSM_NOT_SUPP 0x0002 59 #define BT_L2CAP_BR_ERR_SEC_BLOCK 0x0003 60 #define BT_L2CAP_BR_ERR_NO_RESOURCES 0x0004 61 #define BT_L2CAP_BR_ERR_INVALID_SCID 0x0006 62 #define BT_L2CAP_BR_ERR_SCID_IN_USE 0x0007 63 64 #define BT_L2CAP_CONN_RSP 0x03 65 struct bt_l2cap_conn_rsp { 66 uint16_t dcid; 67 uint16_t scid; 68 uint16_t result; 69 uint16_t status; 70 } __packed; 71 72 #define BT_L2CAP_CONF_SUCCESS 0x0000 73 #define BT_L2CAP_CONF_UNACCEPT 0x0001 74 #define BT_L2CAP_CONF_REJECT 0x0002 75 76 #define BT_L2CAP_CONF_REQ 0x04 77 struct bt_l2cap_conf_req { 78 uint16_t dcid; 79 uint16_t flags; 80 uint8_t data[0]; 81 } __packed; 82 83 #define BT_L2CAP_CONF_RSP 0x05 84 struct bt_l2cap_conf_rsp { 85 uint16_t scid; 86 uint16_t flags; 87 uint16_t result; 88 uint8_t data[0]; 89 } __packed; 90 91 /* Option type used by MTU config request data */ 92 #define BT_L2CAP_CONF_OPT_MTU 0x01 93 /* Options bits selecting most significant bit (hint) in type field */ 94 #define BT_L2CAP_CONF_HINT 0x80 95 #define BT_L2CAP_CONF_MASK 0x7f 96 97 struct bt_l2cap_conf_opt { 98 uint8_t type; 99 uint8_t len; 100 uint8_t data[0]; 101 } __packed; 102 103 #define BT_L2CAP_DISCONN_REQ 0x06 104 struct bt_l2cap_disconn_req { 105 uint16_t dcid; 106 uint16_t scid; 107 } __packed; 108 109 #define BT_L2CAP_DISCONN_RSP 0x07 110 struct bt_l2cap_disconn_rsp { 111 uint16_t dcid; 112 uint16_t scid; 113 } __packed; 114 115 #define BT_L2CAP_INFO_FEAT_MASK 0x0002 116 #define BT_L2CAP_INFO_FIXED_CHAN 0x0003 117 118 #define BT_L2CAP_INFO_REQ 0x0a 119 struct bt_l2cap_info_req { 120 uint16_t type; 121 } __packed; 122 123 /* info result */ 124 #define BT_L2CAP_INFO_SUCCESS 0x0000 125 #define BT_L2CAP_INFO_NOTSUPP 0x0001 126 127 #define BT_L2CAP_INFO_RSP 0x0b 128 struct bt_l2cap_info_rsp { 129 uint16_t type; 130 uint16_t result; 131 uint8_t data[0]; 132 } __packed; 133 134 #define BR_CHAN(_ch) CONTAINER_OF(_ch, struct bt_l2cap_br_chan, chan) 135 136 /* Add channel to the connection */ 137 void bt_l2cap_chan_add(struct bt_conn *conn, struct bt_l2cap_chan *chan, 138 bt_l2cap_chan_destroy_t destroy); 139 140 /* Remove channel from the connection */ 141 void bt_l2cap_chan_remove(struct bt_conn *conn, struct bt_l2cap_chan *chan); 142 143 /* Delete channel */ 144 void bt_l2cap_br_chan_del(struct bt_l2cap_chan *chan); 145 146 const char *bt_l2cap_chan_state_str(bt_l2cap_chan_state_t state); 147 148 #if defined(CONFIG_BT_L2CAP_LOG_LEVEL_DBG) 149 void bt_l2cap_br_chan_set_state_debug(struct bt_l2cap_chan *chan, 150 bt_l2cap_chan_state_t state, 151 const char *func, int line); 152 #define bt_l2cap_br_chan_set_state(_chan, _state) \ 153 bt_l2cap_br_chan_set_state_debug(_chan, _state, __func__, __LINE__) 154 #else 155 void bt_l2cap_br_chan_set_state(struct bt_l2cap_chan *chan, 156 bt_l2cap_chan_state_t state); 157 #endif /* CONFIG_BT_L2CAP_LOG_LEVEL_DBG */ 158 159 /* Prepare an L2CAP PDU to be sent over a connection */ 160 struct net_buf *bt_l2cap_create_pdu_timeout(struct net_buf_pool *pool, 161 size_t reserve, 162 k_timeout_t timeout); 163 164 #define bt_l2cap_create_pdu(_pool, _reserve) \ 165 bt_l2cap_create_pdu_timeout(_pool, _reserve, K_FOREVER) 166
