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ipv6_frag.c File Reference
IPv6 fragmentation and reassembly. More...
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Functions | |
| error_t | ipv6FragmentDatagram (NetInterface *interface, Ipv6PseudoHeader *pseudoHeader, const NetBuffer *payload, size_t payloadOffset, size_t pathMtu, uint8_t hopLimit) |
| Fragment IPv6 datagram into smaller packets. | |
| void | ipv6ParseFragmentHeader (NetInterface *interface, const NetBuffer *ipPacket, size_t ipPacketOffset, size_t fragHeaderOffset, size_t nextHeaderOffset) |
| Parse Fragment header and reassemble original datagram. | |
| void | ipv6FragTick (NetInterface *interface) |
| Fragment reassembly timeout handler. | |
| Ipv6FragDesc * | ipv6SearchFragQueue (NetInterface *interface, Ipv6Header *packet, Ipv6FragmentHeader *header) |
| Search for a matching datagram in the reassembly queue. | |
| void | ipv6FlushFragQueue (NetInterface *interface) |
| Flush IPv6 reassembly queue. | |
| Ipv6HoleDesc * | ipv6FindHole (Ipv6FragDesc *frag, uint16_t offset) |
| Retrieve hole descriptor. | |
| void | ipv6DumpHoleList (Ipv6FragDesc *frag) |
| Dump hole descriptor list. | |
Detailed Description
IPv6 fragmentation and reassembly.
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 ipv6_frag.c.
Function Documentation
| void ipv6DumpHoleList | ( | Ipv6FragDesc * | frag ) |
Dump hole descriptor list.
- Parameters:
-
[in] frag IPv6 fragment descriptor
Definition at line 634 of file ipv6_frag.c.
| Ipv6HoleDesc* ipv6FindHole | ( | Ipv6FragDesc * | frag, |
| uint16_t | offset | ||
| ) |
Retrieve hole descriptor.
- Parameters:
-
[in] frag IPv6 fragment descriptor [in] offset Offset of the hole
- Returns:
- A pointer to the hole descriptor is returned if the specified offset is valid. Otherwise NULL is returned
Definition at line 622 of file ipv6_frag.c.
| void ipv6FlushFragQueue | ( | NetInterface * | interface ) |
Flush IPv6 reassembly queue.
- Parameters:
-
[in] interface Underlying network interface
Definition at line 601 of file ipv6_frag.c.
| error_t ipv6FragmentDatagram | ( | NetInterface * | interface, |
| Ipv6PseudoHeader * | pseudoHeader, | ||
| const NetBuffer * | payload, | ||
| size_t | payloadOffset, | ||
| size_t | pathMtu, | ||
| uint8_t | hopLimit | ||
| ) |
Fragment IPv6 datagram into smaller packets.
- Parameters:
-
[in] interface Underlying network interface [in] pseudoHeader IPv6 pseudo header [in] payload Multi-part buffer containing the payload [in] payloadOffset Offset to the first payload byte [in] pathMtu PMTU value [in] hopLimit Hop Limit value
- Returns:
- Error code
Definition at line 58 of file ipv6_frag.c.
| void ipv6FragTick | ( | NetInterface * | interface ) |
Fragment reassembly timeout handler.
This routine must be periodically called by the TCP/IP stack to handle IPv6 fragment reassembly timeout
- Parameters:
-
[in] interface Underlying network interface
Definition at line 434 of file ipv6_frag.c.
| void ipv6ParseFragmentHeader | ( | NetInterface * | interface, |
| const NetBuffer * | ipPacket, | ||
| size_t | ipPacketOffset, | ||
| size_t | fragHeaderOffset, | ||
| size_t | nextHeaderOffset | ||
| ) |
Parse Fragment header and reassemble original datagram.
- Parameters:
-
[in] interface Underlying network interface [in] ipPacket Multi-part buffer containing the incoming IPv6 packet [in] ipPacketOffset Offset to the first byte of the IPv6 packet [in] fragHeaderOffset Offset to the Fragment header [in] nextHeaderOffset Offset to the Next Header field of the previous header
Definition at line 147 of file ipv6_frag.c.
| Ipv6FragDesc* ipv6SearchFragQueue | ( | NetInterface * | interface, |
| Ipv6Header * | packet, | ||
| Ipv6FragmentHeader * | header | ||
| ) |
Search for a matching datagram in the reassembly queue.
- Parameters:
-
[in] interface Underlying network interface [in] packet Incoming IPv6 packet [in] header Pointer to the Fragment header
- Returns:
- Matching fragment descriptor
Definition at line 498 of file ipv6_frag.c.
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