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ip.c File Reference
IPv4 and IPv6 common routines. More...
Go to the source code of this file.
Functions | |
| error_t | ipSendDatagram (NetInterface *interface, IpPseudoHeader *pseudoHeader, NetBuffer *buffer, size_t offset, uint8_t ttl) |
| Send an IP datagram. | |
| error_t | ipSelectSourceAddr (NetInterface **interface, const IpAddr *destAddr, IpAddr *srcAddr) |
| IP source address selection. | |
| uint16_t | ipCalcChecksum (const void *data, size_t length) |
| IP checksum calculation. | |
| uint16_t | ipCalcChecksumEx (const NetBuffer *buffer, size_t offset, size_t length) |
| Calculate IP checksum over a multi-part buffer. | |
| uint16_t | ipCalcUpperLayerChecksum (const void *pseudoHeader, size_t pseudoHeaderLength, const void *data, size_t dataLength) |
| Calculate IP upper-layer checksum. | |
| uint16_t | ipCalcUpperLayerChecksumEx (const void *pseudoHeader, size_t pseudoHeaderLength, const NetBuffer *buffer, size_t offset, size_t length) |
| Calculate IP upper-layer checksum over a multi-part buffer. | |
| NetBuffer * | ipAllocBuffer (size_t length, size_t *offset) |
| Allocate a buffer to hold an IP packet. | |
| error_t | ipJoinMulticastGroup (NetInterface *interface, const IpAddr *groupAddr) |
| Join the specified host group. | |
| error_t | ipLeaveMulticastGroup (NetInterface *interface, const IpAddr *groupAddr) |
| Leave the specified host group. | |
| bool_t | ipIsUnspecifiedAddr (const IpAddr *ipAddr) |
| Compare an IP address against the unspecified address. | |
| error_t | ipStringToAddr (const char_t *str, IpAddr *ipAddr) |
| Convert a string representation of an IP address to a binary IP address. | |
| char_t * | ipAddrToString (const IpAddr *ipAddr, char_t *str) |
| Convert a binary IP address to a string representation. | |
Detailed Description
IPv4 and IPv6 common routines.
License
Copyright (C) 2010-2017 Oryx Embedded SARL. All rights reserved.
This file is part of CycloneTCP Open.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- Version:
- 1.7.6
Definition in file ip.c.
Function Documentation
| char_t* ipAddrToString | ( | const IpAddr * | ipAddr, |
| char_t * | str | ||
| ) |
| NetBuffer* ipAllocBuffer | ( | size_t | length, |
| size_t * | offset | ||
| ) |
| uint16_t ipCalcChecksum | ( | const void * | data, |
| size_t | length | ||
| ) |
| uint16_t ipCalcChecksumEx | ( | const NetBuffer * | buffer, |
| size_t | offset, | ||
| size_t | length | ||
| ) |
| uint16_t ipCalcUpperLayerChecksum | ( | const void * | pseudoHeader, |
| size_t | pseudoHeaderLength, | ||
| const void * | data, | ||
| size_t | dataLength | ||
| ) |
| uint16_t ipCalcUpperLayerChecksumEx | ( | const void * | pseudoHeader, |
| size_t | pseudoHeaderLength, | ||
| const NetBuffer * | buffer, | ||
| size_t | offset, | ||
| size_t | length | ||
| ) |
Calculate IP upper-layer checksum over a multi-part buffer.
- Parameters:
-
[in] pseudoHeader Pointer to the pseudo header [in] pseudoHeaderLength Pseudo header length [in] buffer Multi-part buffer containing the upper-layer data [in] offset Offset from the first data byte to process [in] length Number of data bytes to process
- Returns:
- Checksum value
| bool_t ipIsUnspecifiedAddr | ( | const IpAddr * | ipAddr ) |
IP source address selection.
This function selects the source address and the relevant network interface to be used in order to join the specified destination address
- Parameters:
-
[in,out] interface A pointer to a valid network interface may be provided as a hint. The function returns a pointer identifying the interface to be used [in] destAddr Destination IP address [out] srcAddr Local IP address to be used
- Returns:
- Error code
| error_t ipSendDatagram | ( | NetInterface * | interface, |
| IpPseudoHeader * | pseudoHeader, | ||
| NetBuffer * | buffer, | ||
| size_t | offset, | ||
| uint8_t | ttl | ||
| ) |
Send an IP datagram.
- Parameters:
-
[in] interface Underlying network interface [in] pseudoHeader IP pseudo header [in] buffer Multi-part buffer containing the payload [in] offset Offset to the first payload byte [in] ttl TTL value. Default Time-To-Live is used when this parameter is zero
- Returns:
- Error code
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