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62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/*
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* Copyright (c) 2017, Pelion and affiliates.
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef PANA_HEADER_H_
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#define PANA_HEADER_H_
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/****************************************
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* Pana Header Base
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* Reserved Length FlaGS Type Session ID Sequncy Numb
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* 0x00 0x00 16-bit 16-bit 16-bit 32-bit 32-bit
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*
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*/
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#define PANA_HEADER_LENGTH 16
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/**
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* Pana Message types
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*/
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#define PANA_MSG_PCI 0x0001
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#define PANA_MSG_PA 0x0002
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#define PANA_MSG_PNA 0x0004
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#define PANA_MSG_RELAY 0x0005
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/**
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* Pana Message flags
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*/
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#define PANA_FLAGS_REQUEST 0x8000
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#define PANA_FLAGS_RESPONSE 0x0000
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#define PANA_FLAGS_START 0x4000
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#define PANA_FLAGS_COMPLETE 0x2000
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#define PANA_FLAG_START_REQ_MASK (PANA_FLAGS_REQUEST | PANA_FLAGS_START)
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#define PANA_FLAGS_PING_RESPONSE 0x0000
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#define PANA_FLAGS_PING 0x0800
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typedef struct {
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uint16_t flags;
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uint16_t type;
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uint16_t payload_len;
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uint32_t session_id;
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uint32_t seq;
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bool agent_retry;
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} pana_header_t;
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bool pana_header_parse(uint8_t *ptr, uint16_t data_length, pana_header_t *header);
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uint8_t *pana_header_write(uint8_t *ptr, const pana_header_t *header);
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#endif /* PANA_HEADER_H_ */
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