likewise
24 years ago
4 changed files with 382 additions and 0 deletions
@ -0,0 +1,286 @@
|
||||
Changelog that precedes the move to Savannah: |
||||
|
||||
(0.5.3) Changes since version 0.5.2 |
||||
|
||||
++ Bugfixes: |
||||
|
||||
* memp_malloc(MEMP_API_MSG) could fail with multiple application |
||||
threads because it wasn't protected by semaphores. |
||||
|
||||
++ Other changes: |
||||
|
||||
* struct ip_addr now packed. |
||||
|
||||
* The name of the time variable in arp.c has been changed to ctime |
||||
to avoid conflicts with the time() function. |
||||
|
||||
(0.5.2) Changes since version 0.5.1 |
||||
|
||||
++ New features: |
||||
|
||||
* A new TCP function, tcp_tmr(), now handles both TCP timers. |
||||
|
||||
++ Bugfixes: |
||||
|
||||
* A bug in tcp_parseopt() could cause the stack to hang because of a |
||||
malformed TCP option. |
||||
|
||||
* The address of new connections in the accept() function in the BSD |
||||
socket library was not handled correctly. |
||||
|
||||
* pbuf_dechain() did not update the ->tot_len field of the tail. |
||||
|
||||
* Aborted TCP connections were not handled correctly in all |
||||
situations. |
||||
|
||||
++ Other changes: |
||||
|
||||
* All protocol header structs are now packed. |
||||
|
||||
* The ->len field in the tcp_seg structure now counts the actual |
||||
amount of data, and does not add one for SYN and FIN segments. |
||||
|
||||
(0.5.1) Changes since version 0.5.0 |
||||
|
||||
++ New features: |
||||
|
||||
* Possible to run as a user process under Linux. |
||||
|
||||
* Preliminary support for cross platform packed structs. |
||||
|
||||
* ARP timer now implemented. |
||||
|
||||
++ Bugfixes: |
||||
|
||||
* TCP output queue length was badly initialized when opening |
||||
connections. |
||||
|
||||
* TCP delayed ACKs were not sent correctly. |
||||
|
||||
* Explicit initialization of BSS segment variables. |
||||
|
||||
* read() in BSD socket library could drop data. |
||||
|
||||
* Problems with memory alignment. |
||||
|
||||
* Situations when all TCP buffers were used could lead to |
||||
starvation. |
||||
|
||||
* TCP MSS option wasn't parsed correctly. |
||||
|
||||
* Problems with UDP checksum calculation. |
||||
|
||||
* IP multicast address tests had endianess problems. |
||||
|
||||
* ARP requests had wrong destination hardware address. |
||||
|
||||
++ Other changes: |
||||
|
||||
* struct eth_addr changed from u16_t[3] array to u8_t[6]. |
||||
|
||||
* A ->linkoutput() member was added to struct netif. |
||||
|
||||
* TCP and UDP ->dest_* struct members where changed to ->remote_*. |
||||
|
||||
* ntoh* macros are now null definitions for big endian CPUs. |
||||
|
||||
(0.5.0) Changes since version 0.4.2 |
||||
|
||||
++ New features: |
||||
|
||||
* Redesigned operating system emulation layer to make porting easier. |
||||
|
||||
* Better control over TCP output buffers. |
||||
|
||||
* Documenation added. |
||||
|
||||
++ Bugfixes: |
||||
|
||||
* Locking issues in buffer management. |
||||
|
||||
* Bugfixes in the sequential API. |
||||
|
||||
* IP forwarding could cause memory leakage. This has been fixed. |
||||
|
||||
++ Other changes: |
||||
|
||||
* Directory structure somewhat changed; the core/ tree has been |
||||
collapsed. |
||||
|
||||
(0.4.2) Changes since version 0.4.1 |
||||
|
||||
++ New features: |
||||
|
||||
* Experimental ARP implementation added. |
||||
|
||||
* Skeleton Ethernet driver added. |
||||
|
||||
* Experimental BSD socket API library added. |
||||
|
||||
++ Bugfixes: |
||||
|
||||
* In very intense situations, memory leakage could occur. This has |
||||
been fixed. |
||||
|
||||
++ Other changes: |
||||
|
||||
* Variables named "data" and "code" have been renamed in order to |
||||
avoid name conflicts in certain compilers. |
||||
|
||||
* Variable++ have in appliciable cases been translated to ++variable |
||||
since some compilers generate better code in the latter case. |
||||
|
||||
(0.4.1) Changes since version 0.4 |
||||
|
||||
++ New features: |
||||
|
||||
* TCP: Connection attempts time out earlier than data |
||||
transmissions. Nagle algorithm implemented. Push flag set on the |
||||
last segment in a burst. |
||||
|
||||
* UDP: experimental support for UDP-Lite extensions. |
||||
|
||||
++ Bugfixes: |
||||
|
||||
* TCP: out of order segments were in some cases handled incorrectly, |
||||
and this has now been fixed. Delayed acknowledgements was broken |
||||
in 0.4, has now been fixed. Binding to an address that is in use |
||||
now results in an error. Reset connections sometimes hung an |
||||
application; this has been fixed. |
||||
|
||||
* Checksum calculation sometimes failed for chained pbufs with odd |
||||
lengths. This has been fixed. |
||||
|
||||
* API: a lot of bug fixes in the API. The UDP API has been improved |
||||
and tested. Error reporting and handling has been |
||||
improved. Logical flaws and race conditions for incoming TCP |
||||
connections has been found and removed. |
||||
|
||||
* Memory manager: alignment issues. Reallocating memory sometimes |
||||
failed, this has been fixed. |
||||
|
||||
* Generic library: bcopy was flawed and has been fixed. |
||||
|
||||
++ Other changes: |
||||
|
||||
* API: all datatypes has been changed from generic ones such as |
||||
ints, to specified ones such as u16_t. Functions that return |
||||
errors now have the correct type (err_t). |
||||
|
||||
* General: A lot of code cleaned up and debugging code removed. Many |
||||
portability issues have been fixed. |
||||
|
||||
* The license was changed; the advertising clause was removed. |
||||
|
||||
* C64 port added. |
||||
|
||||
* Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri |
||||
Kosunen, Mikael Caleres, and Frits Wilmink for reporting and |
||||
fixing bugs! |
||||
|
||||
(0.4) Changes since version 0.3.1 |
||||
|
||||
* Memory management has been radically changed; instead of |
||||
allocating memory from a shared heap, memory for objects that are |
||||
rapidly allocated and deallocated is now kept in pools. Allocation |
||||
and deallocation from those memory pools is very fast. The shared |
||||
heap is still present but is used less frequently. |
||||
|
||||
* The memory, memory pool, and packet buffer subsystems now support |
||||
4-, 2-, or 1-byte alignment. |
||||
|
||||
* "Out of memory" situations are handled in a more robust way. |
||||
|
||||
* Stack usage has been reduced. |
||||
|
||||
* Easier configuration of lwIP parameters such as memory usage, |
||||
TTLs, statistics gathering, etc. All configuration parameters are |
||||
now kept in a single header file "lwipopts.h". |
||||
|
||||
* The directory structure has been changed slightly so that all |
||||
architecture specific files are kept under the src/arch |
||||
hierarchy. |
||||
|
||||
* Error propagation has been improved, both in the protocol modules |
||||
and in the API. |
||||
|
||||
* The code for the RTXC architecture has been implemented, tested |
||||
and put to use. |
||||
|
||||
* Bugs have been found and corrected in the TCP, UDP, IP, API, and |
||||
the Internet checksum modules. |
||||
|
||||
* Bugs related to porting between a 32-bit and a 16-bit architecture |
||||
have been found and corrected. |
||||
|
||||
* The license has been changed slightly to conform more with the |
||||
original BSD license, including the advertisement clause. |
||||
|
||||
(0.3.1) Changes since version 0.3 |
||||
|
||||
* Fix of a fatal bug in the buffer management. Pbufs with allocated |
||||
RAM never returned the RAM when the pbuf was deallocated. |
||||
|
||||
* TCP congestion control, window updates and retransmissions did not |
||||
work correctly. This has now been fixed. |
||||
|
||||
* Bugfixes in the API. |
||||
|
||||
(0.3) Changes since version 0.2 |
||||
|
||||
* New and improved directory structure. All include files are now |
||||
kept in a dedicated include/ directory. |
||||
|
||||
* The API now has proper error handling. A new function, |
||||
netconn_err(), now returns an error code for the connection in |
||||
case of errors. |
||||
|
||||
* Improvements in the memory management subsystem. The system now |
||||
keeps a pointer to the lowest free memory block. A new function, |
||||
mem_malloc2() tries to allocate memory once, and if it fails tries |
||||
to free some memory and retry the allocation. |
||||
|
||||
* Much testing has been done with limited memory |
||||
configurations. lwIP now does a better job when overloaded. |
||||
|
||||
* Some bugfixes and improvements to the buffer (pbuf) subsystem. |
||||
|
||||
* Many bugfixes in the TCP code: |
||||
|
||||
- Fixed a bug in tcp_close(). |
||||
|
||||
- The TCP receive window was incorrectly closed when out of |
||||
sequence segments was received. This has been fixed. |
||||
|
||||
- Connections are now timed-out of the FIN-WAIT-2 state. |
||||
|
||||
- The initial congestion window could in some cases be too |
||||
large. This has been fixed. |
||||
|
||||
- The retransmission queue could in some cases be screwed up. This |
||||
has been fixed. |
||||
|
||||
- TCP RST flag now handled correctly. |
||||
|
||||
- Out of sequence data was in some cases never delivered to the |
||||
application. This has been fixed. |
||||
|
||||
- Retransmitted segments now contain the correct acknowledgment |
||||
number and advertised window. |
||||
|
||||
- TCP retransmission timeout backoffs are not correctly computed |
||||
(ala BSD). After a number of retransmissions, TCP now gives up |
||||
the connection. |
||||
|
||||
* TCP connections now are kept on three lists, one for active |
||||
connections, one for listening connections, and one for |
||||
connections that are in TIME-WAIT. This greatly speeds up the fast |
||||
timeout processing for sending delayed ACKs. |
||||
|
||||
* TCP now provides proper feedback to the application when a |
||||
connection has been successfully set up. |
||||
|
||||
* More comments have been added to the code. The code has also been |
||||
somewhat cleaned up. |
||||
|
||||
(0.2) Initial public release. |
||||
@ -0,0 +1,33 @@
|
||||
/* |
||||
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science. |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or without modification, |
||||
* are permitted provided that the following conditions are met: |
||||
* |
||||
* 1. Redistributions of source code must retain the above copyright notice, |
||||
* this list of conditions and the following disclaimer. |
||||
* 2. Redistributions in binary form must reproduce the above copyright notice, |
||||
* this list of conditions and the following disclaimer in the documentation |
||||
* and/or other materials provided with the distribution. |
||||
* 3. The name of the author may not be used to endorse or promote products |
||||
* derived from this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
||||
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
||||
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
||||
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
||||
* OF SUCH DAMAGE. |
||||
* |
||||
* This file is part of the lwIP TCP/IP stack. |
||||
* |
||||
* Author: Adam Dunkels <adam@sics.se> |
||||
* |
||||
*/ |
||||
|
||||
|
||||
@ -0,0 +1,7 @@
|
||||
src/ - The source code for the lwIP TCP/IP stack. |
||||
|
||||
proj/ - Makefiles and code for compiling lwIP. |
||||
|
||||
doc/ - Documentation on the lwIP APIs. |
||||
|
||||
See also the FILES file in each subdirectory. |
||||
@ -0,0 +1,56 @@
|
||||
lwIP is a small independent implementation of the TCP/IP protocol |
||||
suite that has been developed by Adam Dunkels at the Computer and |
||||
Networks Architectures (CNA) lab at the Swedish Institute of Computer |
||||
Science (SICS). |
||||
|
||||
The focus of the lwIP TCP/IP implementation is to reduce the RAM usage |
||||
while still having a full scale TCP. This making lwIP suitable for use |
||||
in embedded systems with tenths of kilobytes of free RAM and room for |
||||
around 40 kilobytes of code ROM. |
||||
|
||||
lwIP features: |
||||
* IP (Internet Protocol) including packet forwarding over multiple |
||||
network interfaces |
||||
* ICMP (Internet Control Message Protocol) for network maintenance |
||||
and debugging |
||||
* UDP (User Datagram Protocol) including experimental UDP-lite |
||||
extensions |
||||
* TCP (Transmission Control Protocol) with congestion control, RTT |
||||
estimation and fast recovery/fast retransmit |
||||
* Specialized API for enhanced performance |
||||
* Optional Berkeley socket API |
||||
|
||||
lwIP is freely available under a BSD license. |
||||
|
||||
lwIP has grown into an excellent TCP/IP stack for embedded devices, |
||||
and developers using the stack often submit bug fixes, improvements, |
||||
and additions to the stack to further increase its usefulness. |
||||
|
||||
Development of lwIP is hosted on Savannah, a central point for |
||||
software development, maintenance and distribution. A core team |
||||
will improve lwIP by the use of Savannah's interface and CVS. |
||||
|
||||
The current lwIP CVS tree can be checked out by doing: |
||||
cvs -d:pserver:anoncvs@subversions.gnu.org:/cvsroot/lwip login |
||||
cvs -z3 -d:pserver:anoncvs@subversions.gnu.org:/cvsroot/lwip co lwip |
||||
|
||||
Last night's CVS tar ball can be downloaded from: |
||||
http://savannah.gnu.org/cvs.backups/lwip.tar.gz |
||||
|
||||
Submit patches and bugs via the lwIP project page: |
||||
http://savannah.nongnu.org/projects/lwip/ |
||||
|
||||
Stable releases have not been released yet. For development we |
||||
suggest downloading the latest CVS and keeping track of the |
||||
lwIP mailing list. |
||||
|
||||
The mailing list (and archives), as well as Adam Dunkels' papers |
||||
on lwIP can be found on the official lwIP home page, which is |
||||
http://www.sics.se/~adam/lwip/ |
||||
|
||||
Reading Adam Dunkels' papers and browsing the mailing list archives |
||||
is a good way to become familiar with the design of lwIP. |
||||
|
||||
Adam Dunkels <adam@sics.se> |
||||
Leon Woestenberg <leon.woestenberg@gmx.net> |
||||
|
||||
Loading…
Reference in new issue