mirror of
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP
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0e9628796c
* updating doxygen config * fixing doxygen comments * adding IPv6 files and fixing comments * fix doxygen cfg and file names in comments * wip doxygen v6 docs * adding doxygen comments * include RA src file to doxgendocs generation * fix spell check issues * Uncrustify: triggered by comment. * fix minor build issue * fix spell check issues * Uncrustify: triggered by comment * fix trailing white space * Dev integration hein.v8 (#738) * Updating tcp utilities * Some more change in dev_integration_hein.v8 * In FreeRTOS_DNS_Parser.c : use 'ipUDP_PAYLOAD_OFFSET_IPv4' in stead of 'ipIP_PAYLOAD_OFFSET' * And a few more corrections * Changes to WinPCap network interface, removed debugging code * After applying uncrustify * Oops, I forgot the push changes in include files. * Now removing it, hopefully --------- Co-authored-by: Nikhil Kamath <110539926+amazonKamath@users.noreply.github.com> Co-authored-by: Monika Singh <108652024+moninom1@users.noreply.github.com> * Fix CBMC proofs for DNS (#718) * Use CBMC XML output to enable VSCode debugger (#673) Prior to this commit, CBMC would emit logging information in plain text format, which does not contain information required for the CBMC VSCode debugger. This commit makes CBMC use XML instead of plain text. Co-authored-by: Mark Tuttle <tuttle@acm.org> * wip * wip DNSgetHostByName * wip DNSgetHostByName * fixed cbmc proof for DNS_ReadNameField * wip DNSgetHostByName_a_harness * Fix CBMC prooff for DNSgetHostByName * wip fix DNSgetHostByName_a CBMC proof * fixed cbmc target func not called issue in DNSclear * fixed cbmc target func not called issue in DNSlookup * fix DNSgetHostByName_a CBMC proof * update comments * more asserts * fixing formatting * updating as per review comments * fix dns after review comments * adding more asserts * adds more asserts * minor fix * fixing comments * fixing comments * fixing minor issue * fixing DNS_ReadReply() signature * making code more consistant * adding more asserts * making code more consistent --------- Co-authored-by: Kareem Khazem <karkhaz@amazon.com> Co-authored-by: Mark Tuttle <tuttle@acm.org> * Uncrustify: triggered by comment * fixing formatting --------- Co-authored-by: GitHub Action <action@github.com> Co-authored-by: Hein Tibosch <hein_tibosch@yahoo.es> Co-authored-by: Nikhil Kamath <110539926+amazonKamath@users.noreply.github.com> Co-authored-by: Monika Singh <108652024+moninom1@users.noreply.github.com> Co-authored-by: Kareem Khazem <karkhaz@amazon.com> Co-authored-by: Mark Tuttle <tuttle@acm.org>
90 lines
3.4 KiB
C
90 lines
3.4 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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* http://aws.amazon.com/freertos
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* http://www.FreeRTOS.org
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*/
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/**
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* @file FreeRTOS_TCP_Utils_IPV4.c
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* @brief Module contains utility functions used by FreeRTOS+TCP module.
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*
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* Endianness: in this module all ports and IP addresses are stored in
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* host byte-order, except fields in the IP-packets
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*/
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/* Standard includes. */
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#include <stdint.h>
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#include <stdio.h>
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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/* FreeRTOS+TCP includes. */
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#include "FreeRTOS_IP.h"
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#include "FreeRTOS_IP_Private.h"
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#include "FreeRTOS_TCP_Utils.h"
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/* Just make sure the contents doesn't get compiled if TCP is not enabled. */
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#if ipconfigUSE_TCP == 1
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/**
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* @brief Set the MSS (Maximum segment size) associated with the given socket.
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*
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* @param[in] pxSocket: The socket whose MSS is to be set.
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*/
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void prvSocketSetMSS_IPV4( FreeRTOS_Socket_t * pxSocket )
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{
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uint32_t ulMSS = ipconfigTCP_MSS;
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const NetworkEndPoint_t * pxEndPoint = pxSocket->pxEndPoint;
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if( pxEndPoint != NULL )
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{
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/* Do not allow MSS smaller than tcpMINIMUM_SEGMENT_LENGTH. */
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#if ( ipconfigTCP_MSS >= tcpMINIMUM_SEGMENT_LENGTH )
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{
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ulMSS = ipconfigTCP_MSS;
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}
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#else
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{
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ulMSS = tcpMINIMUM_SEGMENT_LENGTH;
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}
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#endif
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/* Check if the remote IP-address belongs to the same netmask. */
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if( ( ( FreeRTOS_ntohl( pxSocket->u.xTCP.xRemoteIP.ulIP_IPv4 ) ^ pxEndPoint->ipv4_settings.ulIPAddress ) & pxEndPoint->ipv4_settings.ulNetMask ) != 0U )
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{
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/* Data for this peer will pass through a router, and maybe through
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* the internet. Limit the MSS to 1400 bytes or less. */
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ulMSS = FreeRTOS_min_uint32( ( uint32_t ) tcpREDUCED_MSS_THROUGH_INTERNET, ulMSS );
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}
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}
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FreeRTOS_debug_printf( ( "prvSocketSetMSS: %u bytes for %xip port %u\n", ( unsigned ) ulMSS, ( unsigned ) pxSocket->u.xTCP.xRemoteIP.ulIP_IPv4, pxSocket->u.xTCP.usRemotePort ) );
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pxSocket->u.xTCP.usMSS = ( uint16_t ) ulMSS;
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}
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/*-----------------------------------------------------------*/
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#endif /* ipconfigUSE_TCP == 1 */
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