mirror of
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP
synced 2025-10-23 18:38:33 +08:00
8e7a3fe5a1
* Check IPv6 packet length. * Fix unused compile warnings. * Move xCheckSizeFields to static function and fix unit test cases. * Add minimum length check for IPv6 transport layer.
122 lines
4.9 KiB
C
122 lines
4.9 KiB
C
/*
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* FreeRTOS+TCP <DEVELOPMENT BRANCH>
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* Copyright (C) 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*/
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#ifndef FREERTOS_IPV4_PRIVATE_H
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#define FREERTOS_IPV4_PRIVATE_H
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/* *INDENT-OFF* */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* *INDENT-ON* */
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#include "FreeRTOS_IP_Private.h"
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/* The maximum UDP payload length. */
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#define ipMAX_UDP_PAYLOAD_LENGTH ( ( ipconfigNETWORK_MTU - ipSIZE_OF_IPv4_HEADER ) - ipSIZE_OF_UDP_HEADER )
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#define TCP_PACKET_SIZE ( sizeof( TCPPacket_t ) )
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/* The offset into an IP packet into which the IP data (payload) starts. */
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#define ipIP_PAYLOAD_OFFSET ( sizeof( IPPacket_t ) )
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/* The offset into a UDP packet at which the UDP data (payload) starts. */
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#define ipUDP_PAYLOAD_OFFSET_IPv4 ( sizeof( UDPPacket_t ) )
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/* The value of 'ipUDP_PAYLOAD_IP_TYPE_OFFSET' is 42 + 6 = 48 bytes. */
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/* __HT_ just to get it compiled. */
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#if !defined( ipIP_TYPE_OFFSET )
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#define ipIP_TYPE_OFFSET ( 6U )
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#endif
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#define ipUDP_PAYLOAD_IP_TYPE_OFFSET ( sizeof( UDPPacket_t ) + ipIP_TYPE_OFFSET )
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#include "pack_struct_start.h"
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struct xIP_HEADER
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{
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uint8_t ucVersionHeaderLength; /**< The version field + internet header length 0 + 1 = 1 */
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uint8_t ucDifferentiatedServicesCode; /**< Differentiated services code point + ECN 1 + 1 = 2 */
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uint16_t usLength; /**< Entire Packet size, ex. Ethernet header. 2 + 2 = 4 */
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uint16_t usIdentification; /**< Identification field 4 + 2 = 6 */
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uint16_t usFragmentOffset; /**< Fragment flags and fragment offset 6 + 2 = 8 */
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uint8_t ucTimeToLive; /**< Time to live field 8 + 1 = 9 */
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uint8_t ucProtocol; /**< Protocol used in the IP-datagram 9 + 1 = 10 */
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uint16_t usHeaderChecksum; /**< Checksum of the IP-header 10 + 2 = 12 */
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uint32_t ulSourceIPAddress; /**< IP address of the source 12 + 4 = 16 */
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uint32_t ulDestinationIPAddress; /**< IP address of the destination 16 + 4 = 20 */
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}
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#include "pack_struct_end.h"
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typedef struct xIP_HEADER IPHeader_t;
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/*-----------------------------------------------------------*/
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/* Nested protocol packets. */
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/*-----------------------------------------------------------*/
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#include "pack_struct_start.h"
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struct xIP_PACKET
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{
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EthernetHeader_t xEthernetHeader;
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IPHeader_t xIPHeader;
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}
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#include "pack_struct_end.h"
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typedef struct xIP_PACKET IPPacket_t;
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#include "pack_struct_start.h"
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struct xICMP_PACKET
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{
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EthernetHeader_t xEthernetHeader; /**< The Ethernet header of an ICMP packet. */
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IPHeader_t xIPHeader; /**< The IP header of an ICMP packet. */
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ICMPHeader_t xICMPHeader; /**< The ICMP header of an ICMP packet. */
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}
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#include "pack_struct_end.h"
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typedef struct xICMP_PACKET ICMPPacket_t;
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#include "pack_struct_start.h"
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struct xUDP_PACKET
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{
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EthernetHeader_t xEthernetHeader; /**< UDP-Packet ethernet header 0 + 14 = 14 */
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IPHeader_t xIPHeader; /**< UDP-Packet IP header 14 + 20 = 34 */
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UDPHeader_t xUDPHeader; /**< UDP-Packet UDP header 34 + 8 = 42 */
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}
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#include "pack_struct_end.h"
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typedef struct xUDP_PACKET UDPPacket_t;
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#include "pack_struct_start.h"
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struct xTCP_PACKET
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{
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EthernetHeader_t xEthernetHeader; /**< The ethernet header 0 + 14 = 14 */
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IPHeader_t xIPHeader; /**< The IP header 14 + 20 = 34 */
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TCPHeader_t xTCPHeader; /**< The TCP header 34 + 32 = 66 */
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}
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#include "pack_struct_end.h"
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typedef struct xTCP_PACKET TCPPacket_t;
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/* *INDENT-OFF* */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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/* *INDENT-ON* */
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#endif /* FREERTOS_IP_PRIVATE_H */
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