diff options
Diffstat (limited to 'src/libs/mynewt-nimble/nimble/host/src/ble_l2cap_priv.h')
| -rw-r--r-- | src/libs/mynewt-nimble/nimble/host/src/ble_l2cap_priv.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/libs/mynewt-nimble/nimble/host/src/ble_l2cap_priv.h b/src/libs/mynewt-nimble/nimble/host/src/ble_l2cap_priv.h new file mode 100644 index 00000000..e3409743 --- /dev/null +++ b/src/libs/mynewt-nimble/nimble/host/src/ble_l2cap_priv.h @@ -0,0 +1,144 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +#ifndef H_L2CAP_PRIV_ +#define H_L2CAP_PRIV_ + +#include "ble_l2cap_coc_priv.h" +#include "host/ble_l2cap.h" +#include <inttypes.h> +#include "stats/stats.h" +#include "os/queue.h" +#include "os/os_mbuf.h" +#ifdef __cplusplus +extern "C" { +#endif + +struct ble_hs_conn; +struct hci_data_hdr; + +STATS_SECT_START(ble_l2cap_stats) + STATS_SECT_ENTRY(chan_create) + STATS_SECT_ENTRY(chan_delete) + STATS_SECT_ENTRY(update_init) + STATS_SECT_ENTRY(update_rx) + STATS_SECT_ENTRY(update_fail) + STATS_SECT_ENTRY(proc_timeout) + STATS_SECT_ENTRY(sig_tx) + STATS_SECT_ENTRY(sig_rx) + STATS_SECT_ENTRY(sm_tx) + STATS_SECT_ENTRY(sm_rx) +STATS_SECT_END +extern STATS_SECT_DECL(ble_l2cap_stats) ble_l2cap_stats; + +extern struct os_mempool ble_l2cap_chan_pool; + +/* This is nimble specific; packets sent to the black hole CID do not elicit + * an "invalid CID" response. + */ +#define BLE_L2CAP_CID_BLACK_HOLE 0xffff + +#define BLE_L2CAP_HDR_SZ 4 + +typedef uint8_t ble_l2cap_chan_flags; + +typedef int ble_l2cap_rx_fn(struct ble_l2cap_chan *chan); + +struct ble_l2cap_chan { + SLIST_ENTRY(ble_l2cap_chan) next; + uint16_t conn_handle; + uint16_t dcid; + uint16_t scid; + + /* Unions just to avoid confusion on MPS/MTU. + * In CoC context, L2CAP MTU is MPS + */ + union { + uint16_t my_mtu; + uint16_t my_coc_mps; + }; + + union { + uint16_t peer_mtu; + uint16_t peer_coc_mps; + }; + + ble_l2cap_chan_flags flags; + + struct os_mbuf *rx_buf; + uint16_t rx_len; /* Length of current reassembled rx packet. */ + + ble_l2cap_rx_fn *rx_fn; + +#if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM) != 0 + uint16_t psm; + struct ble_l2cap_coc_endpoint coc_rx; + struct ble_l2cap_coc_endpoint coc_tx; + uint16_t initial_credits; + ble_l2cap_event_fn *cb; + void *cb_arg; +#endif +}; + +struct ble_l2cap_hdr { + uint16_t len; + uint16_t cid; +}; + +typedef int ble_l2cap_tx_fn(struct ble_hs_conn *conn, + struct ble_l2cap_chan *chan); + +#define BLE_L2CAP_CHAN_F_TXED_MTU 0x01 /* We have sent our MTU. */ + +SLIST_HEAD(ble_l2cap_chan_list, ble_l2cap_chan); + +int ble_l2cap_parse_hdr(struct os_mbuf *om, int off, + struct ble_l2cap_hdr *l2cap_hdr); +struct os_mbuf *ble_l2cap_prepend_hdr(struct os_mbuf *om, uint16_t cid, + uint16_t len); + +struct ble_l2cap_chan *ble_l2cap_chan_alloc(uint16_t conn_handle); +void ble_l2cap_chan_free(struct ble_hs_conn *conn, struct ble_l2cap_chan *chan); + +bool ble_l2cap_is_mtu_req_sent(const struct ble_l2cap_chan *chan); + +int ble_l2cap_rx(struct ble_hs_conn *conn, + struct hci_data_hdr *hci_hdr, + struct os_mbuf *om, + ble_l2cap_rx_fn **out_rx_cb, + int *out_reject_cid); +int ble_l2cap_tx(struct ble_hs_conn *conn, struct ble_l2cap_chan *chan, + struct os_mbuf *txom); + +void ble_l2cap_remove_rx(struct ble_hs_conn *conn, struct ble_l2cap_chan *chan); + +int ble_l2cap_init(void); + +/* Below experimental API is available when BLE_VERSION >= 52 */ +int ble_l2cap_enhanced_connect(uint16_t conn_handle, + uint16_t psm, uint16_t mtu, + uint8_t num, struct os_mbuf *sdu_rx[], + ble_l2cap_event_fn *cb, void *cb_arg); +int ble_l2cap_reconfig(struct ble_l2cap_chan *chans[], uint8_t num, uint16_t new_mtu); + +#ifdef __cplusplus +} +#endif + +#endif |