| /* |
| * 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. |
| */ |
| |
| #include <string.h> |
| #include "ble_hs_priv.h" |
| |
| #if NIMBLE_BLE_CONNECT |
| int |
| ble_l2cap_sig_tx(uint16_t conn_handle, struct os_mbuf *txom) |
| { |
| struct ble_l2cap_chan *chan; |
| struct ble_hs_conn *conn; |
| int rc; |
| |
| ble_hs_lock(); |
| rc = ble_hs_misc_conn_chan_find_reqd(conn_handle, BLE_L2CAP_CID_SIG, |
| &conn, &chan); |
| if (rc == 0) { |
| rc = ble_l2cap_tx(conn, chan, txom); |
| } |
| ble_hs_unlock(); |
| |
| return rc; |
| } |
| |
| void |
| ble_l2cap_sig_hdr_parse(void *payload, uint16_t len, |
| struct ble_l2cap_sig_hdr *dst) |
| { |
| struct ble_l2cap_sig_hdr *src = payload; |
| |
| BLE_HS_DBG_ASSERT(len >= BLE_L2CAP_SIG_HDR_SZ); |
| |
| dst->op = src->op; |
| dst->identifier = src->identifier; |
| dst->length = le16toh(src->length); |
| } |
| |
| int |
| ble_l2cap_sig_reject_tx(uint16_t conn_handle, uint8_t id, uint16_t reason, |
| void *data, int data_len) |
| { |
| struct ble_l2cap_sig_reject *cmd; |
| struct os_mbuf *txom; |
| |
| cmd = ble_l2cap_sig_cmd_get(BLE_L2CAP_SIG_OP_REJECT, id, |
| sizeof(*cmd) + data_len, &txom); |
| if (!cmd) { |
| return BLE_HS_ENOMEM; |
| } |
| |
| cmd->reason = htole16(reason); |
| memcpy(cmd->data, data, data_len); |
| |
| STATS_INC(ble_l2cap_stats, sig_rx); |
| return ble_l2cap_sig_tx(conn_handle, txom); |
| } |
| |
| int |
| ble_l2cap_sig_reject_invalid_cid_tx(uint16_t conn_handle, uint8_t id, |
| uint16_t src_cid, uint16_t dst_cid) |
| { |
| struct { |
| uint16_t local_cid; |
| uint16_t remote_cid; |
| } data = { |
| .local_cid = dst_cid, |
| .remote_cid = src_cid, |
| }; |
| |
| return ble_l2cap_sig_reject_tx(conn_handle, id, |
| BLE_L2CAP_SIG_ERR_INVALID_CID, |
| &data, sizeof data); |
| } |
| |
| void * |
| ble_l2cap_sig_cmd_get(uint8_t opcode, uint8_t id, uint16_t len, |
| struct os_mbuf **txom) |
| { |
| struct ble_l2cap_sig_hdr *hdr; |
| |
| *txom = ble_hs_mbuf_l2cap_pkt(); |
| if (*txom == NULL) { |
| return NULL; |
| } |
| |
| if (os_mbuf_extend(*txom, sizeof(*hdr) + len) == NULL) { |
| os_mbuf_free_chain(*txom); |
| return NULL; |
| } |
| |
| hdr = (struct ble_l2cap_sig_hdr *)(*txom)->om_data; |
| |
| hdr->op = opcode; |
| hdr->identifier = id; |
| hdr->length = htole16(len); |
| |
| return hdr->data; |
| } |
| |
| #endif |