3 * TODO: The lwIP source code makes some invalid assumptions on processor
4 word-length, storage sizes and alignment. See the mailing lists for
5 problems with exoteric (/DSP) architectures showing these problems.
6 We still have to fix some of these issues neatly.
8 * TODO: the PPP code is broken in a few ways. There are namespace
9 collisions on BSD systems and many assumptions on word-length
10 (sizeof(int)). In ppp.c an assumption is made on the availability of
11 a thread subsystem. Either PPP needs to be moved to contrib/ports/???
12 or rearranged to be more generic.
18 * [Enter new changes just after this line - do not remove this line]
22 2009-04-21 Simon Goldschmidt
23 * dns.c, init.c, dns.h, opt.h: task #7507, patch #6786: DNS supports static
24 hosts table. New configuration options DNS_LOCAL_HOSTLIST and
25 DNS_LOCAL_HOSTLIST_IS_DYNAMIC.
27 2009-04-15 Simon Goldschmidt
28 * dhcp.c: patch #6763: Global DHCP XID can be redefined to something more unique
30 2009-03-31 Kieran Mansley
31 * tcp.c, tcp_out.c, tcp_in.c, sys.h, tcp.h, opts.h: add support for
32 TCP timestamp options, off by default. Rework tcp_enqueue() to
33 take option flags rather than specified option data
35 2009-02-18 Simon Goldschmidt
36 * cc.h: Added printf formatter for size_t: SZT_F
38 2009-02-16 Simon Goldschmidt (patch by Rishi Khan)
39 * icmp.c, opt.h: patch #6539: (configurable) response to broadcast- and multicast
42 2009-02-12 Simon Goldschmidt
43 * init.h: Added LWIP_VERSION to get the current version of the stack
45 2009-02-11 Simon Goldschmidt (suggested by Gottfried Spitaler)
46 * opt.h, memp.h/.c: added MEMP_MEM_MALLOC to use mem_malloc/mem_free instead
47 of the pool allocator (can save code size with MEM_LIBC_MALLOC if libc-malloc
50 2009-01-28 Jonathan Larmour (suggested by Bill Bauerbach)
51 * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h: inet_chksum_pseudo_partial()
52 is only used by UDPLITE at present, so conditionalise it.
54 2008-12-03 Simon Goldschmidt (base on patch from Luca Ceresoli)
55 * autoip.c: checked in (slightly modified) patch #6683: Customizable AUTOIP
56 "seed" address. This should reduce AUTOIP conflicts if
57 LWIP_AUTOIP_CREATE_SEED_ADDR is overridden.
59 2008-10-02 Jonathan Larmour and Rishi Khan
60 * sockets.c (lwip_accept): Return EWOULDBLOCK if would block on non-blocking
63 2008-06-30 Simon Goldschmidt
64 * mem.c, opt.h, stats.h: fixed bug #21433: Calling mem_free/pbuf_free from
65 interrupt context isn't safe: LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT allows
66 mem_free to run between mem_malloc iterations. Added illegal counter for
69 2008-06-27 Simon Goldschmidt
70 * stats.h/.c, some other files: patch #6483: stats module improvement:
71 Added defines to display each module's statistic individually, added stats
72 defines for MEM, MEMP and SYS modules, removed (unused) rexmit counter.
74 2008-06-17 Simon Goldschmidt
75 * err.h: patch #6459: Made err_t overridable to use a more efficient type
76 (define LWIP_ERR_T in cc.h)
78 2008-06-17 Simon Goldschmidt
79 * slipif.c: patch #6480: Added a configuration option for slipif for symmetry
82 2008-06-17 Simon Goldschmidt (patch by Luca Ceresoli)
83 * netif.c, loopif.c, ip.c, netif.h, loopif.h, opt.h: Checked in slightly
84 modified version of patch # 6370: Moved loopif code to netif.c so that
85 loopback traffic is supported on all netifs (all local IPs).
86 Added option to limit loopback packets for each netifs.
91 2009-04-19 Simon Goldschmidt
92 * tcp_out.c: Fixed bug #26236: "TCP options (timestamp) don't work with
93 no-copy-tcpwrite": deallocate option data, only concat segments with same flags
95 2009-04-19 Simon Goldschmidt
96 * tcp_out.c: Fixed bug #25094: "Zero-length pbuf" (options are now allocated
97 in the header pbuf, not the data pbuf)
99 2009-04-18 Simon Goldschmidt
100 * api_msg.c: fixed bug #25695: Segmentation fault in do_writemore()
102 2009-04-15 Simon Goldschmidt
103 * sockets.c: tried to fix bug #23559: lwip_recvfrom problem with tcp
105 2009-04-15 Simon Goldschmidt
106 * dhcp.c: task #9192: mem_free of dhcp->options_in and dhcp->msg_in
108 2009-04-15 Simon Goldschmidt
109 * ip.c, ip6.c, tcp_out.c, ip.h: patch #6808: Add a utility function
110 ip_hinted_output() (for smaller code mainly)
112 2009-04-15 Simon Goldschmidt
113 * inet.c: patch #6765: Supporting new line characters in inet_aton()
115 2009-04-15 Simon Goldschmidt
116 * dhcp.c: patch #6764: DHCP rebind and renew did not send hostnam option;
117 Converted constant OPTION_MAX_MSG_SIZE to netif->mtu, check if netif->mtu
118 is big enough in dhcp_start
120 2009-04-15 Simon Goldschmidt
121 * netbuf.c: bug #26027: netbuf_chain resulted in pbuf memory leak
123 2009-04-15 Simon Goldschmidt
124 * sockets.c, ppp.c: bug #25763: corrected 4 occurrences of SMEMCPY to MEMCPY
126 2009-04-15 Simon Goldschmidt
127 * sockets.c: bug #26121: set_errno can be overridden
129 2009-04-09 Kieran Mansley (patch from Luca Ceresoli <lucaceresoli>)
130 * init.c, opt.h: Patch#6774 TCP_QUEUE_OOSEQ breaks compilation when
133 2009-04-09 Kieran Mansley (patch from Roy Lee <roylee17>)
134 * tcp.h: Patch#6802 Add do-while-clauses to those function like
137 2009-03-31 Kieran Mansley
138 * tcp.c, tcp_in.c, tcp_out.c, tcp.h, opt.h: Rework the way window
139 updates are calculated and sent (BUG20515)
141 * tcp_in.c: cope with SYN packets received during established states,
142 and retransmission of initial SYN.
144 * tcp_out.c: set push bit correctly when tcp segments are merged
146 2009-03-27 Kieran Mansley
147 * tcp_out.c set window correctly on probes (correcting change made
150 2009-03-26 Kieran Mansley
151 * tcp.c, tcp_in.c, tcp.h: add tcp_abandon() to cope with dropping
152 connections where no reset required (bug #25622)
154 * tcp_out.c: set TCP_ACK flag on keepalive and zero window probes
157 2009-02-18 Simon Goldschmidt (Jonathan Larmour and Bill Auerbach)
158 * ip_frag.c: patch #6528: the buffer used for IP_FRAG_USES_STATIC_BUF could be
159 too small depending on MEM_ALIGNMENT
161 2009-02-16 Simon Goldschmidt
162 * sockets.h/.c, api_*.h/.c: fixed arguments of socket functions to match the standard;
163 converted size argument of netconn_write to 'size_t'
165 2009-02-16 Simon Goldschmidt
166 * tcp.h, tcp.c: fixed bug #24440: TCP connection close problem on 64-bit host
167 by moving accept callback function pointer to TCP_PCB_COMMON
169 2009-02-12 Simon Goldschmidt
170 * dhcp.c: fixed bug #25345 (DHCPDECLINE is sent with "Maximum message size"
173 2009-02-11 Simon Goldschmidt
174 * dhcp.c: fixed bug #24480 (releasing old udp_pdb and pbuf in dhcp_start)
176 2009-02-11 Simon Goldschmidt
177 * opt.h, api_msg.c: added configurable default valud for netconn->recv_bufsize:
178 RECV_BUFSIZE_DEFAULT (fixes bug #23726: pbuf pool exhaustion on slow recv())
180 2009-02-10 Simon Goldschmidt
181 * tcp.c: fixed bug #25467: Listen backlog is not reset on timeout in SYN_RCVD:
182 Accepts_pending is decrease on a corresponding listen pcb when a connection
183 in state SYN_RCVD is close.
185 2009-01-28 Jonathan Larmour
186 * pbuf.c: reclaim pbufs from TCP out-of-sequence segments if we run
189 2008-12-19 Simon Goldschmidt
190 * many files: patch #6699: fixed some warnings on platform where sizeof(int) == 2
192 2008-12-10 Tamas Somogyi, Frédéric Bernon
193 * sockets.c: fixed bug #25051: lwip_recvfrom problem with udp: fromaddr and
194 port uses deleted netbuf.
196 2008-10-18 Simon Goldschmidt
197 * tcp_in.c: fixed bug ##24596: Vulnerability on faulty TCP options length
200 2008-10-15 Simon Goldschmidt
201 * ip_frag.c: fixed bug #24517: IP reassembly crashes on unaligned IP headers
202 by packing the struct ip_reass_helper.
204 2008-10-03 David Woodhouse, Jonathan Larmour
205 * etharp.c (etharp_arp_input): Fix type aliasing problem copying ip address.
207 2008-10-02 Jonathan Larmour
208 * dns.c: Hard-code structure sizes, to avoid issues on some compilers where
211 2008-09-30 Jonathan Larmour
212 * sockets.c (lwip_accept): check addr isn't NULL. If it's valid, do an
213 assertion check that addrlen isn't NULL.
215 2008-09-30 Jonathan Larmour
216 * tcp.c: Fix bug #24227, wrong error message in tcp_bind.
218 2008-08-26 Simon Goldschmidt
219 * inet.h, ip_addr.h: fixed bug #24132: Cross-dependency between ip_addr.h and
220 inet.h -> moved declaration of struct in_addr from ip_addr.h to inet.h
222 2008-08-14 Simon Goldschmidt
223 * api_msg.c: fixed bug #23847: do_close_internal references freed memory (when
224 tcp_close returns != ERR_OK)
226 2008-07-08 Frédéric Bernon
227 * stats.h: Fix some build bugs introduced with patch #6483 (missing some parameters
228 in macros, mainly if MEM_STATS=0 and MEMP_STATS=0).
230 2008-06-24 Jonathan Larmour
231 * tcp_in.c: Fix for bug #23693 as suggested by Art R. Ensure cseg is unused
232 if tcp_seg_copy fails.
234 2008-06-17 Simon Goldschmidt
235 * inet_chksum.c: Checked in some ideas of patch #6460 (loop optimizations)
236 and created defines for swapping bytes and folding u32 to u16.
238 2008-05-30 Kieran Mansley
239 * tcp_in.c Remove redundant "if" statement, and use real rcv_wnd
240 rather than rcv_ann_wnd when deciding if packets are in-window.
241 Contributed by <arasmussen@consultant.datasys.swri.edu>
243 2008-05-30 Kieran Mansley
244 * mem.h: Fix BUG#23254. Change macro definition of mem_* to allow
245 passing as function pointers when MEM_LIBC_MALLOC is defined.
247 2008-05-09 Jonathan Larmour
248 * err.h, err.c, sockets.c: Fix bug #23119: Reorder timeout error code to
249 stop it being treated as a fatal error.
251 2008-04-15 Simon Goldschmidt
252 * dhcp.c: fixed bug #22804: dhcp_stop doesn't clear NETIF_FLAG_DHCP
255 2008-03-27 Simon Goldschmidt
256 * mem.c, tcpip.c, tcpip.h, opt.h: fixed bug #21433 (Calling mem_free/pbuf_free
257 from interrupt context isn't safe): set LWIP_USE_HEAP_FROM_INTERRUPT to 1
258 in lwipopts.h or use pbuf_free_callback(p)/mem_free_callback(m) to free pbufs
259 or heap memory from interrupt context
261 2008-03-26 Simon Goldschmidt
262 * tcp_in.c, tcp.c: fixed bug #22249: division by zero could occur if a remote
263 host sent a zero mss as TCP option.
270 2008-03-10 Jonathan Larmour
271 * inet_chksum.c: Allow choice of one of the sample algorithms to be
272 made from lwipopts.h. Fix comment on how to override LWIP_CHKSUM.
274 2008-01-22 Frédéric Bernon
275 * tcp.c, tcp_in.c, tcp.h, opt.h: Rename LWIP_CALCULATE_EFF_SEND_MSS in
276 TCP_CALCULATE_EFF_SEND_MSS to have coherent TCP options names.
278 2008-01-14 Frédéric Bernon
279 * rawapi.txt, api_msg.c, tcp.c, tcp_in.c, tcp.h: changes for task #7675 "Enable
280 to refuse data on a TCP_EVENT_RECV call". Important, behavior changes for the
281 tcp_recv callback (see rawapi.txt).
283 2008-01-14 Frédéric Bernon, Marc Chaland
284 * ip.c: Integrate patch #6369" ip_input : checking before realloc".
286 2008-01-12 Frédéric Bernon
287 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
288 netconn::sem per netconn::op_completed like suggested for the task #7490
289 "Add return value to sys_mbox_post".
291 2008-01-12 Frédéric Bernon
292 * api_msg.c, opt.h: replace DEFAULT_RECVMBOX_SIZE per DEFAULT_TCP_RECVMBOX_SIZE,
293 DEFAULT_UDP_RECVMBOX_SIZE and DEFAULT_RAW_RECVMBOX_SIZE (to optimize queues
294 sizes), like suggested for the task #7490 "Add return value to sys_mbox_post".
296 2008-01-10 Frédéric Bernon
297 * tcpip.h, tcpip.c: add tcpip_callback_with_block function for the task #7490
298 "Add return value to sys_mbox_post". tcpip_callback is always defined as
299 "blocking" ("block" parameter = 1).
301 2008-01-10 Frédéric Bernon
302 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
303 netconn::mbox (sys_mbox_t) per netconn::sem (sys_sem_t) for the task #7490
304 "Add return value to sys_mbox_post".
306 2008-01-05 Frédéric Bernon
307 * sys_arch.txt, api.h, api_lib.c, api_msg.h, api_msg.c, tcpip.c, sys.h, opt.h:
308 Introduce changes for task #7490 "Add return value to sys_mbox_post" with some
309 modifications in the sys_mbox api: sys_mbox_new take a "size" parameters which
310 indicate the number of pointers query by the mailbox. There is three defines
311 in opt.h to indicate sizes for tcpip::mbox, netconn::recvmbox, and for the
312 netconn::acceptmbox. Port maintainers, you can decide to just add this new
313 parameter in your implementation, but to ignore it to keep the previous behavior.
314 The new sys_mbox_trypost function return a value to know if the mailbox is
315 full or if the message is posted. Take a look to sys_arch.txt for more details.
316 This new function is used in tcpip_input (so, can be called in an interrupt
317 context since the function is not blocking), and in recv_udp and recv_raw.
319 2008-01-04 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
320 * rawapi.txt, api.h, api_lib.c, api_msg.h, api_msg.c, sockets.c, tcp.h, tcp.c,
321 tcp_in.c, init.c, opt.h: rename backlog options with TCP_ prefix, limit the
322 "backlog" parameter in an u8_t, 0 is interpreted as "smallest queue", add
323 documentation in the rawapi.txt file.
325 2007-12-31 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
326 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Add TCP persist timer
328 2007-12-31 Frédéric Bernon, Luca Ceresoli
329 * autoip.c, etharp.c: ip_addr.h: Integrate patch #6348: "Broadcast ARP packets
330 in autoip". The change in etharp_raw could be removed, since all calls to
331 etharp_raw use ethbroadcast for the "ethdst_addr" parameter. But it could be
334 2007-12-30 Frédéric Bernon, Tom Evans
335 * ip.c: Fix bug #21846 "LwIP doesn't appear to perform any IP Source Address
336 Filtering" reported by Tom Evans.
338 2007-12-21 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
339 * tcp.h, opt.h, api.h, api_msg.h, tcp.c, tcp_in.c, api_lib.c, api_msg.c,
340 sockets.c, init.c: task #7252: Implement TCP listen backlog: Warning: raw API
341 applications have to call 'tcp_accepted(pcb)' in their accept callback to
342 keep accepting new connections.
344 2007-12-13 Frédéric Bernon
345 * api_msg.c, err.h, err.c, sockets.c, dns.c, dns.h: replace "enum dns_result"
346 by err_t type. Add a new err_t code "ERR_INPROGRESS".
348 2007-12-12 Frédéric Bernon
349 * dns.h, dns.c, opt.h: move DNS options to the "right" place. Most visibles
350 are the one which have ram usage.
352 2007-12-05 Frédéric Bernon
353 * netdb.c: add a LWIP_DNS_API_HOSTENT_STORAGE option to decide to use a static
354 set of variables (=0) or a local one (=1). In this last case, your port should
355 provide a function "struct hostent* sys_thread_hostent( struct hostent* h)"
356 which have to do a copy of "h" and return a pointer ont the "per-thread" copy.
358 2007-12-03 Simon Goldschmidt
359 * ip.c: ip_input: check if a packet is for inp first before checking all other
360 netifs on netif_list (speeds up packet receiving in most cases)
362 2007-11-30 Simon Goldschmidt
363 * udp.c, raw.c: task #7497: Sort lists (pcb, netif, ...) for faster access
364 UDP: move a (connected) pcb selected for input to the front of the list of
365 pcbs so that it is found faster next time. Same for RAW pcbs that have eaten
368 2007-11-28 Simon Goldschmidt
369 * etharp.c, stats.c, stats.h, opt.h: Introduced ETHARP_STATS
371 2007-11-25 Simon Goldschmidt
372 * dhcp.c: dhcp_unfold_reply() uses pbuf_copy_partial instead of its own copy
375 2007-11-24 Simon Goldschmidt
376 * netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c
377 to the new file netdb.c; included lwip_getaddrinfo.
379 2007-11-21 Simon Goldschmidt
380 * tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
381 based on the MTU of the netif used to send. Enabled by default. Disable by
382 setting LWIP_CALCULATE_EFF_SEND_MSS to 0. This fixes bug #21492.
384 2007-11-19 Frédéric Bernon
385 * api_msg.c, dns.h, dns.c: Implement DNS_DOES_NAME_CHECK option (check if name
386 received match the name query), implement DNS_USES_STATIC_BUF (the place where
387 copy dns payload to parse the response), return an error if there is no place
388 for a new query, and fix some minor problems.
390 2007-11-16 Simon Goldschmidt
391 * new files: ipv4/inet.c, ipv4/inet_chksum.c, ipv6/inet6.c
392 removed files: core/inet.c, core/inet6.c
393 Moved inet files into ipv4/ipv6 directory; splitted inet.c/inet.h into
394 inet and chksum part; changed includes in all lwIP files as appropriate
396 2007-11-16 Simon Goldschmidt
397 * api.h, api_msg.h, api_lib.c, api_msg.c, socket.h, socket.c: Added sequential
398 dns resolver function for netconn api (netconn_gethostbyname) and socket api
399 (gethostbyname/gethostbyname_r).
401 2007-11-15 Jim Pettinato, Frédéric Bernon
402 * opt.h, init.c, tcpip.c, dhcp.c, dns.h, dns.c: add DNS client for simple name
403 requests with RAW api interface. Initialization is done in lwip_init() with
404 build time options. DNS timer is added in tcpip_thread context. DHCP can set
405 DNS server ip addresses when options are received. You need to set LWIP_DNS=1
406 in your lwipopts.h file (LWIP_DNS=0 in opt.h). DNS_DEBUG can be set to get
407 some traces with LWIP_DEBUGF. Sanity check have been added. There is a "todo"
408 list with points to improve.
410 2007-11-06 Simon Goldschmidt
411 * opt.h, mib2.c: Patch #6215: added ifAdminStatus write support (if explicitly
412 enabled by defining SNMP_SAFE_REQUESTS to 0); added code to check link status
413 for ifOperStatus if LWIP_NETIF_LINK_CALLBACK is defined.
415 2007-11-06 Simon Goldschmidt
416 * api.h, api_msg.h and dependent files: Task #7410: Removed the need to include
417 core header files in api.h (ip/tcp/udp/raw.h) to hide the internal
418 implementation from netconn api applications.
420 2007-11-03 Frédéric Bernon
421 * api.h, api_lib.c, api_msg.c, sockets.c, opt.h: add SO_RCVBUF option for UDP &
422 RAW netconn. You need to set LWIP_SO_RCVBUF=1 in your lwipopts.h (it's disabled
423 by default). Netconn API users can use the netconn_recv_bufsize macro to access
424 it. This is a first release which have to be improve for TCP. Note it used the
425 netconn::recv_avail which need to be more "thread-safe" (note there is already
426 the problem for FIONREAD with lwip_ioctl/ioctlsocket).
428 2007-11-01 Frédéric Bernon, Marc Chaland
429 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, tcp.h, tcp_out.c:
430 Integrate "patch #6250 : MSG_MORE flag for send". MSG_MORE is used at socket api
431 layer, NETCONN_MORE at netconn api layer, and TCP_WRITE_FLAG_MORE at raw api
432 layer. This option enable to delayed TCP PUSH flag on multiple "write" calls.
433 Note that previous "copy" parameter for "write" APIs is now called "apiflags".
435 2007-10-24 Frédéric Bernon
436 * api.h, api_lib.c, api_msg.c: Add macro API_EVENT in the same spirit than
437 TCP_EVENT_xxx macros to get a code more readable. It could also help to remove
438 some code (like we have talk in "patch #5919 : Create compile switch to remove
439 select code"), but it could be done later.
441 2007-10-08 Simon Goldschmidt
442 * many files: Changed initialization: many init functions are not needed any
443 more since we now rely on the compiler initializing global and static
446 2007-10-06 Simon Goldschmidt
447 * ip_frag.c, memp.c, mib2.c, ip_frag.h, memp_std.h, opt.h: Changed IP_REASSEMBLY
448 to enqueue the received pbufs so that multiple packets can be reassembled
449 simultaneously and no static reassembly buffer is needed.
451 2007-10-05 Simon Goldschmidt
452 * tcpip.c, etharp.h, etharp.c: moved ethernet_input from tcpip.c to etharp.c so
453 all netifs (or ports) can use it.
455 2007-10-05 Frédéric Bernon
456 * netifapi.h, netifapi.c: add function netifapi_netif_set_default. Change the
457 common function to reduce a little bit the footprint (for all functions using
458 only the "netif" parameter).
460 2007-10-03 Frédéric Bernon
461 * netifapi.h, netifapi.c: add functions netifapi_netif_set_up, netifapi_netif_set_down,
462 netifapi_autoip_start and netifapi_autoip_stop. Use a common function to reduce
463 a little bit the footprint (for all functions using only the "netif" parameter).
465 2007-09-15 Frédéric Bernon
466 * udp.h, udp.c, sockets.c: Changes for "#20503 IGMP Improvement". Add IP_MULTICAST_IF
467 option in socket API, and a new field "multicast_ip" in "struct udp_pcb" (for
468 netconn and raw API users), only if LWIP_IGMP=1. Add getsockopt processing for
469 IP_MULTICAST_TTL and IP_MULTICAST_IF.
471 2007-09-10 Frédéric Bernon
472 * snmp.h, mib2.c: enable to remove SNMP timer (which consumne several cycles
473 even when it's not necessary). snmp_agent.txt tell to call snmp_inc_sysuptime()
474 each 10ms (but, it's intrusive if you use sys_timeout feature). Now, you can
475 decide to call snmp_add_sysuptime(100) each 1000ms (which is bigger "step", but
476 call to a lower frequency). Or, you can decide to not call snmp_inc_sysuptime()
477 or snmp_add_sysuptime(), and to define the SNMP_GET_SYSUPTIME(sysuptime) macro.
478 This one is undefined by default in mib2.c. SNMP_GET_SYSUPTIME is called inside
479 snmp_get_sysuptime(u32_t *value), and enable to change "sysuptime" value only
480 when it's queried (any direct call to "sysuptime" is changed by a call to
483 2007-09-09 Frédéric Bernon, Bill Florac
484 * igmp.h, igmp.c, netif.h, netif.c, ip.c: To enable to have interfaces with IGMP,
485 and others without it, there is a new NETIF_FLAG_IGMP flag to set in netif->flags
486 if you want IGMP on an interface. igmp_stop() is now called inside netif_remove().
487 igmp_report_groups() is now called inside netif_set_link_up() (need to have
488 LWIP_NETIF_LINK_CALLBACK=1) to resend reports once the link is up (avoid to wait
489 the next query message to receive the matching multicast streams).
491 2007-09-08 Frédéric Bernon
492 * sockets.c, ip.h, api.h, tcp.h: declare a "struct ip_pcb" which only contains
493 IP_PCB. Add in the netconn's "pcb" union a "struct ip_pcb *ip;" (no size change).
494 Use this new field to access to common pcb fields (ttl, tos, so_options, etc...).
495 Enable to access to these fields with LWIP_TCP=0.
497 2007-09-05 Frédéric Bernon
498 * udp.c, ipv4/icmp.c, ipv4/ip.c, ipv6/icmp.c, ipv6/ip6.c, ipv4/icmp.h,
499 ipv6/icmp.h, opt.h: Integrate "task #7272 : LWIP_ICMP option". The new option
500 LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default).
501 Be careful, disabling ICMP make your product non-compliant to RFC1122, but
502 help to reduce footprint, and to reduce "visibility" on the Internet.
504 2007-09-05 Frédéric Bernon, Bill Florac
505 * opt.h, sys.h, tcpip.c, slipif.c, ppp.c, sys_arch.txt: Change parameters list
506 for sys_thread_new (see "task #7252 : Create sys_thread_new_ex()"). Two new
507 parameters have to be provided: a task name, and a task stack size. For this
508 one, since it's platform dependant, you could define the best one for you in
509 your lwipopts.h. For port maintainers, you can just add these new parameters
510 in your sys_arch.c file, and but it's not mandatory, use them in your OS
513 2007-09-05 Frédéric Bernon
514 * inet.c, autoip.c, msg_in.c, msg_out.c, init.c: Move some build time checkings
515 inside init.c for task #7142 "Sanity check user-configurable values".
517 2007-09-04 Frédéric Bernon, Bill Florac
518 * igmp.h, igmp.c, memp_std.h, memp.c, init.c, opt.h: Replace mem_malloc call by
519 memp_malloc, and use a new MEMP_NUM_IGMP_GROUP option (see opt.h to define the
520 value). It will avoid potential fragmentation problems, use a counter to know
521 how many times a group is used on an netif, and free it when all applications
522 leave it. MEMP_NUM_IGMP_GROUP got 8 as default value (and init.c got a sanity
523 check if LWIP_IGMP!=0).
525 2007-09-03 Frédéric Bernon
526 * igmp.h, igmp.c, sockets.c, api_msg.c: Changes for "#20503 IGMP Improvement".
527 Initialize igmp_mac_filter to NULL in netif_add (this field should be set in
528 the netif's "init" function). Use the "imr_interface" field (for socket layer)
529 and/or the "interface" field (for netconn layer), for join/leave operations.
530 The igmp_join/leavegroup first parameter change from a netif to an ipaddr.
531 This field could be a netif's ipaddr, or "any" (same meaning than ip_addr_isany).
533 2007-08-30 Frédéric Bernon
534 * Add netbuf.h, netbuf.c, Change api.h, api_lib.c: #7249 "Split netbuf functions
535 from api/api_lib". Now netbuf API is independant of netconn, and can be used
536 with other API (application based on raw API, or future "socket2" API). Ports
537 maintainers just have to add src/api/netbuf.c in their makefile/projects.
539 2007-08-30 Frédéric Bernon, Jonathan Larmour
540 * init.c: Add first version of lwip_sanity_check for task #7142 "Sanity check
541 user-configurable values".
543 2007-08-29 Frédéric Bernon
544 * igmp.h, igmp.c, tcpip.c, init.c, netif.c: change igmp_init and add igmp_start.
545 igmp_start is call inside netif_add. Now, igmp initialization is in the same
546 spirit than the others modules. Modify some IGMP debug traces.
548 2007-08-29 Frédéric Bernon
549 * Add init.h, init.c, Change opt.h, tcpip.c: Task #7213 "Add a lwip_init function"
550 Add lwip_init function to regroup all modules initializations, and to provide
551 a place to add code for task #7142 "Sanity check user-configurable values".
552 Ports maintainers should remove direct initializations calls from their code,
553 and add init.c in their makefiles. Note that lwip_init() function is called
554 inside tcpip_init, but can also be used by raw api users since all calls are
555 disabled when matching options are disabled. Also note that their is new options
556 in opt.h, you should configure in your lwipopts.h (they are enabled per default).
558 2007-08-26 Marc Boucher
559 * api_msg.c: do_close_internal(): Reset the callbacks and arg (conn) to NULL
560 since they can under certain circumstances be called with an invalid conn
561 pointer after the connection has been closed (and conn has been freed).
563 2007-08-25 Frédéric Bernon (Artem Migaev's Patch)
564 * netif.h, netif.c: Integrate "patch #6163 : Function to check if link layer is up".
565 Add a netif_is_link_up() function if LWIP_NETIF_LINK_CALLBACK option is set.
567 2007-08-22 Frédéric Bernon
568 * netif.h, netif.c, opt.h: Rename LWIP_NETIF_CALLBACK in LWIP_NETIF_STATUS_CALLBACK
569 to be coherent with new LWIP_NETIF_LINK_CALLBACK option before next release.
571 2007-08-22 Frédéric Bernon
572 * tcpip.h, tcpip.c, ethernetif.c, opt.h: remove options ETHARP_TCPIP_INPUT &
573 ETHARP_TCPIP_ETHINPUT, now, only "ethinput" code is supported, even if the
574 name is tcpip_input (we keep the name of 1.2.0 function).
576 2007-08-17 Jared Grubb
577 * memp_std.h, memp.h, memp.c, mem.c, stats.c: (Task #7136) Centralize mempool
578 settings into new memp_std.h and optional user file lwippools.h. This adds
579 more dynamic mempools, and allows the user to create an arbitrary number of
580 mempools for mem_malloc.
582 2007-08-16 Marc Boucher
583 * api_msg.c: Initialize newconn->state to NETCONN_NONE in accept_function;
584 otherwise it was left to NETCONN_CLOSE and sent_tcp() could prematurely
585 close the connection.
587 2007-08-16 Marc Boucher
588 * sockets.c: lwip_accept(): check netconn_peer() error return.
590 2007-08-16 Marc Boucher
591 * mem.c, mem.h: Added mem_calloc().
593 2007-08-16 Marc Boucher
594 * tcpip.c, tcpip.h memp.c, memp.h: Added distinct memp (MEMP_TCPIP_MSG_INPKT)
595 for input packets to prevent floods from consuming all of MEMP_TCPIP_MSG
596 and starving other message types.
597 Renamed MEMP_TCPIP_MSG to MEMP_TCPIP_MSG_API
599 2007-08-16 Marc Boucher
600 * pbuf.c, pbuf.h, etharp.c, tcp_in.c, sockets.c: Split pbuf flags in pbuf
601 type and flgs (later renamed to flags).
602 Use enum pbuf_flag as pbuf_type. Renumber PBUF_FLAG_*.
603 Improved lwip_recvfrom(). TCP push now propagated.
605 2007-08-16 Marc Boucher
606 * ethernetif.c, contrib/ports/various: ethbroadcast now a shared global
609 2007-08-16 Marc Boucher
610 * ppp_oe.c ppp_oe.h, auth.c chap.c fsm.c lcp.c ppp.c ppp.h,
611 etharp.c ethernetif.c, etharp.h, opt.h tcpip.h, tcpip.c:
612 Added PPPoE support and various PPP improvements.
614 2007-07-25 Simon Goldschmidt
615 * api_lib.c, ip_frag.c, pbuf.c, api.h, pbuf.h: Introduced pbuf_copy_partial,
616 making netbuf_copy_partial use this function.
618 2007-07-25 Simon Goldschmidt
619 * tcp_in.c: Fix bug #20506: Slow start / initial congestion window starts with
620 2 * mss (instead of 1 * mss previously) to comply with some newer RFCs and
623 2007-07-13 Jared Grubb (integrated by Frédéric Bernon)
624 * opt.h, netif.h, netif.c, ethernetif.c: Add new configuration option to add
625 a link callback in the netif struct, and functions to handle it. Be carefull
626 for port maintainers to add the NETIF_FLAG_LINK_UP flag (like in ethernetif.c)
627 if you want to be sure to be compatible with future changes...
629 2007-06-30 Frédéric Bernon
630 * sockets.h, sockets.c: Implement MSG_PEEK flag for recv/recvfrom functions.
632 2007-06-21 Simon Goldschmidt
633 * etharp.h, etharp.c: Combined etharp_request with etharp_raw for both
634 LWIP_AUTOIP =0 and =1 to remove redundant code.
636 2007-06-21 Simon Goldschmidt
637 * mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option
638 MEM_USE_POOLS to use 4 pools with different sized elements instead of a
639 heap. This both prevents memory fragmentation and gives a higher speed
640 at the cost of more memory consumption. Turned off by default.
642 2007-06-21 Simon Goldschmidt
643 * api_lib.c, api_msg.c, api.h, api_msg.h: Converted the length argument of
644 netconn_write (and therefore also api_msg_msg.msg.w.len) from u16_t into
645 int to be able to send a bigger buffer than 64K with one time (mainly
646 used from lwip_send).
648 2007-06-21 Simon Goldschmidt
649 * tcp.h, api_msg.c: Moved the nagle algorithm from netconn_write/do_write
650 into a define (tcp_output_nagle) in tcp.h to provide it to raw api users, too.
652 2007-06-21 Simon Goldschmidt
653 * api.h, api_lib.c, api_msg.c: Fixed bug #20021: Moved sendbuf-processing in
654 netconn_write from api_lib.c to api_msg.c to also prevent multiple context-
655 changes on low memory or empty send-buffer.
657 2007-06-18 Simon Goldschmidt
658 * etharp.c, etharp.h: Changed etharp to use a defined hardware address length
659 of 6 to avoid loading netif->hwaddr_len every time (since this file is only
660 used for ethernet and struct eth_addr already had a defined length of 6).
662 2007-06-17 Simon Goldschmidt
663 * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets
664 to disable UDP checksum generation on transmit.
666 2007-06-13 Frédéric Bernon, Simon Goldschmidt
667 * debug.h, api_msg.c: change LWIP_ERROR to use it to check errors like invalid
668 pointers or parameters, and let the possibility to redefined it in cc.h. Use
669 this macro to check "conn" parameter in api_msg.c functions.
671 2007-06-11 Simon Goldschmidt
672 * sockets.c, sockets.h: Added UDP lite support for sockets
674 2007-06-10 Simon Goldschmidt
675 * udp.h, opt.h, api_msg.c, ip.c, udp.c: Included switch LWIP_UDPLITE (enabled
676 by default) to switch off UDP-Lite support if not needed (reduces udp.c code
679 2007-06-09 Dominik Spies (integrated by Frédéric Bernon)
680 * autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h:
681 AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and
682 LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt
683 (see TODO mark in the source code).
685 2007-06-09 Simon Goldschmidt
686 * etharp.h, etharp.c, ethernetif.c: Modified order of parameters for
687 etharp_output() to match netif->output so etharp_output() can be used
688 directly as netif->output to save one function call.
690 2007-06-08 Simon Goldschmidt
691 * netif.h, ethernetif.c, slipif.c, loopif.c: Added define
692 NETIF_INIT_SNMP(netif, type, speed) to initialize per-netif snmp variables,
693 added initialization of those to ethernetif, slipif and loopif.
695 2007-05-18 Simon Goldschmidt
696 * opt.h, ip_frag.c, ip_frag.h, ip.c: Added option IP_FRAG_USES_STATIC_BUF
697 (defaulting to off for now) that can be set to 0 to send fragmented
698 packets by passing PBUF_REFs down the stack.
700 2007-05-23 Frédéric Bernon
701 * api_lib.c: Implement SO_RCVTIMEO for accept and recv on TCP
702 connections, such present in patch #5959.
704 2007-05-23 Frédéric Bernon
705 * api.h, api_lib.c, api_msg.c, sockets.c: group the different NETCONN_UDPxxx
706 code in only one part...
708 2007-05-18 Simon Goldschmidt
709 * opt.h, memp.h, memp.c: Added option MEMP_OVERFLOW_CHECK to check for memp
710 elements to overflow. This is achieved by adding some bytes before and after
711 each pool element (increasing their size, of course), filling them with a
712 prominent value and checking them on freeing the element.
713 Set it to 2 to also check every element in every pool each time memp_malloc()
714 or memp_free() is called (slower but more helpful).
716 2007-05-10 Simon Goldschmidt
717 * opt.h, memp.h, memp.c, pbuf.c (see task #6831): use a new memp pool for
718 PBUF_POOL pbufs instead of the old pool implementation in pbuf.c to reduce
721 2007-05-11 Frédéric Bernon
722 * sockets.c, api_lib.c, api_msg.h, api_msg.c, netifapi.h, netifapi.c, tcpip.c:
723 Include a function pointer instead of a table index in the message to reduce
724 footprint. Disable some part of lwip_send and lwip_sendto if some options are
725 not set (LWIP_TCP, LWIP_UDP, LWIP_RAW).
727 2007-05-10 Simon Goldschmidt
728 * *.h (except netif/ppp/*.h): Included patch #5448: include '#ifdef __cplusplus
729 \ extern "C" {' in all header files. Now you can write your application using
730 the lwIP stack in C++ and simply #include the core files. Note I have left
731 out the netif/ppp/*h header files for now, since I don't know which files are
732 included by applications and which are for internal use only.
734 2007-05-09 Simon Goldschmidt
735 * opt.h, *.c/*.h: Included patch #5920: Create define to override C-library
736 memcpy. 2 Defines are created: MEMCPY() for normal memcpy, SMEMCPY() for
737 situations where some compilers might inline the copy and save a function
738 call. Also replaced all calls to memcpy() with calls to (S)MEMCPY().
740 2007-05-08 Simon Goldschmidt
741 * mem.h: If MEM_LIBC_MALLOC==1, allow the defines (e.g. mem_malloc() -> malloc())
742 to be overriden in case the C-library malloc implementation is not protected
743 against concurrent access.
745 2007-05-04 Simon Goldschmidt (Atte Kojo)
746 * etharp.c: Introduced fast one-entry-cache to speed up ARP lookup when sending
747 multiple packets to the same host.
749 2007-05-04 Frédéric Bernon, Jonathan Larmour
750 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fix bug #19162 "lwip_sento: a possible
751 to corrupt remote addr/port connection state". Reduce problems "not enought memory" with
752 netbuf (if we receive lot of datagrams). Improve lwip_sendto (only one exchange between
753 sockets api and api_msg which run in tcpip_thread context). Add netconn_sento function.
754 Warning, if you directly access to "fromaddr" & "fromport" field from netbuf struct,
755 these fields are now renamed "addr" & "port".
757 2007-04-11 Jonathan Larmour
758 * sys.h, api_lib.c: Provide new sys_mbox_tryfetch function. Require ports to provide new
759 sys_arch_mbox_tryfetch function to get a message if one is there, otherwise return
760 with SYS_MBOX_EMPTY. sys_arch_mbox_tryfetch can be implemented as a function-like macro
761 by the port in sys_arch.h if desired.
763 2007-04-06 Frédéric Bernon, Simon Goldschmidt
764 * opt.h, tcpip.h, tcpip.c, netifapi.h, netifapi.c: New configuration option LWIP_NETIF_API
765 allow to use thread-safe functions to add/remove netif in list, and to start/stop dhcp
766 clients, using new functions from netifapi.h. Disable as default (no port change to do).
768 2007-04-05 Frédéric Bernon
769 * sockets.c: remplace ENOBUFS errors on alloc_socket by ENFILE to be more BSD compliant.
771 2007-04-04 Simon Goldschmidt
772 * arch.h, api_msg.c, dhcp.c, msg_in.c, sockets.c: Introduced #define LWIP_UNUSED_ARG(x)
773 use this for and architecture-independent form to tell the compiler you intentionally
774 are not using this variable. Can be overriden in cc.h.
776 2007-03-28 Frédéric Bernon
777 * opt.h, netif.h, dhcp.h, dhcp.c: New configuration option LWIP_NETIF_HOSTNAME allow to
778 define a hostname in netif struct (this is just a pointer, so, you can use a hardcoded
779 string, point on one of your's ethernetif field, or alloc a string you will free yourself).
780 It will be used by DHCP to register a client hostname, but can also be use when you call
783 2007-03-28 Frédéric Bernon
784 * netif.h, netif.c: A new NETIF_FLAG_ETHARP flag is defined in netif.h, to allow to
785 initialize a network interface's flag with. It tell this interface is an ethernet
786 device, and we can use ARP with it to do a "gratuitous ARP" (RFC 3220 "IP Mobility
787 Support for IPv4" section 4.6) when interface is "up" with netif_set_up().
789 2007-03-26 Frédéric Bernon, Jonathan Larmour
790 * opt.h, tcpip.c: New configuration option LWIP_ARP allow to disable ARP init at build
791 time if you only use PPP or SLIP. The default is enable. Note we don't have to call
792 etharp_init in your port's initilization sequence if you use tcpip.c, because this call
793 is done in tcpip_init function.
795 2007-03-22 Frédéric Bernon
796 * stats.h, stats.c, msg_in.c: Stats counters can be change to u32_t if necessary with the
797 new option LWIP_STATS_LARGE. If you need this option, define LWIP_STATS_LARGE to 1 in
798 your lwipopts.h. More, unused counters are not defined in the stats structs, and not
799 display by stats_display(). Note that some options (SYS_STATS and RAW_STATS) are defined
800 but never used. Fix msg_in.c with the correct #if test for a stat display.
802 2007-03-21 Kieran Mansley
803 * netif.c, netif.h: Apply patch#4197 with some changes (originator: rireland@hmgsl.com).
804 Provides callback on netif up/down state change.
806 2007-03-11 Frédéric Bernon, Mace Gael, Steve Reynolds
807 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, igmp.h, igmp.c,
808 ip.c, netif.h, tcpip.c, opt.h:
809 New configuration option LWIP_IGMP to enable IGMP processing. Based on only one
810 filter per all network interfaces. Declare a new function in netif to enable to
811 control the MAC filter (to reduce lwIP traffic processing).
813 2007-03-11 Frédéric Bernon
814 * tcp.h, tcp.c, sockets.c, tcp_out.c, tcp_in.c, opt.h: Keepalive values can
815 be configured at run time with LWIP_TCP_KEEPALIVE, but don't change this
816 unless you know what you're doing (default are RFC1122 compliant). Note
817 that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set in seconds.
819 2007-03-08 Frédéric Bernon
820 * tcp.h: Keepalive values can be configured at compile time, but don't change
821 this unless you know what you're doing (default are RFC1122 compliant).
823 2007-03-08 Frédéric Bernon
824 * sockets.c, api.h, api_lib.c, tcpip.c, sys.h, sys.c, err.c, opt.h:
825 Implement LWIP_SO_RCVTIMEO configuration option to enable/disable SO_RCVTIMEO
826 on UDP sockets/netconn.
828 2007-03-08 Simon Goldschmidt
829 * snmp_msg.h, msg_in.c: SNMP UDP ports can be configured at compile time.
831 2007-03-06 Frédéric Bernon
832 * api.h, api_lib.c, sockets.h, sockets.c, tcpip.c, sys.h, sys.c, err.h:
833 Implement SO_RCVTIMEO on UDP sockets/netconn.
835 2007-02-28 Kieran Mansley (based on patch from Simon Goldschmidt)
836 * api_lib.c, tcpip.c, memp.c, memp.h: make API msg structs allocated
837 on the stack and remove the API msg type from memp
839 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
840 * sockets.h, sockets.c: Move socket initialization to new
841 lwip_socket_init() function.
842 NOTE: this changes the API with ports. Ports will have to be
843 updated to call lwip_socket_init() now.
845 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
846 * api_lib.c: Use memcpy in netbuf_copy_partial.
851 2008-03-17 Frédéric Bernon, Ed Kerekes
852 * igmp.h, igmp.c: Fix bug #22613 "IGMP iphdr problem" (could have
853 some problems to fill the IP header on some targets, use now the
854 ip.h macros to do it).
856 2008-03-13 Frédéric Bernon
857 * sockets.c: Fix bug #22435 "lwip_recvfrom with TCP break;". Using
858 (lwip_)recvfrom with valid "from" and "fromlen" parameters, on a
859 TCP connection caused a crash. Note that using (lwip_)recvfrom
860 like this is a bit slow and that using (lwip)getpeername is the
861 good lwip way to do it (so, using recv is faster on tcp sockets).
863 2008-03-12 Frédéric Bernon, Jonathan Larmour
864 * api_msg.c, contrib/apps/ping.c: Fix bug #22530 "api_msg.c's
865 recv_raw() does not consume data", and the ping sample (with
866 LWIP_SOCKET=1, the code did the wrong supposition that lwip_recvfrom
867 returned the IP payload, without the IP header).
869 2008-03-04 Jonathan Larmour
870 * mem.c, stats.c, mem.h: apply patch #6414 to avoid compiler errors
871 and/or warnings on some systems where mem_size_t and size_t differ.
872 * pbuf.c, ppp.c: Fix warnings on some systems with mem_malloc.
874 2008-03-04 Kieran Mansley (contributions by others)
875 * Numerous small compiler error/warning fixes from contributions to
876 mailing list after 1.3.0 release candidate made.
878 2008-01-25 Cui hengbin (integrated by Frédéric Bernon)
879 * dns.c: Fix bug #22108 "DNS problem" caused by unaligned structures.
881 2008-01-15 Kieran Mansley
882 * tcp_out.c: BUG20511. Modify persist timer to start when we are
883 prevented from sending by a small send window, not just a zero
886 2008-01-09 Jonathan Larmour
887 * opt.h, ip.c: Rename IP_OPTIONS define to IP_OPTIONS_ALLOWED to avoid
888 conflict with Linux system headers.
890 2008-01-06 Jonathan Larmour
891 * dhcp.c: fix bug #19927: "DHCP NACK problem" by clearing any existing set IP
892 address entirely on receiving a DHCPNAK, and restarting discovery.
894 2007-12-21 Simon Goldschmidt
895 * sys.h, api_lib.c, api_msg.c, sockets.c: fix bug #21698: "netconn->recv_avail
896 is not protected" by using new macros for interlocked access to modify/test
899 2007-12-20 Kieran Mansley (based on patch from Oleg Tyshev)
900 * tcp_in.c: fix bug# 21535 (nrtx not reset correctly in SYN_SENT state)
902 2007-12-20 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
903 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: fix bug #20199 (better handling
904 of silly window avoidance and prevent lwIP from shrinking the window)
906 2007-12-04 Simon Goldschmidt
907 * tcp.c, tcp_in.c: fix bug #21699 (segment leak in ooseq processing when last
908 data packet was lost): add assert that all segment lists are empty in
909 tcp_pcb_remove before setting pcb to CLOSED state; don't directly set CLOSED
910 state from LAST_ACK in tcp_process
912 2007-12-02 Simon Goldschmidt
913 * sockets.h: fix bug #21654: exclude definition of struct timeval from #ifndef FD_SET
914 If including <sys/time.h> for system-struct timeval, LWIP_TIMEVAL_PRIVATE now
915 has to be set to 0 in lwipopts.h
917 2007-12-02 Simon Goldschmidt
918 * api_msg.c, api_lib.c: fix bug #21656 (recvmbox problem in netconn API): always
919 allocate a recvmbox in netconn_new_with_proto_and_callback. For a tcp-listen
920 netconn, this recvmbox is later freed and a new mbox is allocated for acceptmbox.
921 This is a fix for thread-safety and allocates all items needed for a netconn
922 when the netconn is created.
924 2007-11-30 Simon Goldschmidt
925 * udp.c: first attempt to fix bug #21655 (DHCP doesn't work reliably with multiple
926 netifs): if LWIP_DHCP is enabled, UDP packets to DHCP_CLIENT_PORT are passed
927 to netif->dhcp->pcb only (if that exists) and not to any other pcb for the same
928 port (only solution to let UDP pcbs 'bind' to a netif instead of an IP address)
930 2007-11-27 Simon Goldschmidt
931 * ip.c: fixed bug #21643 (udp_send/raw_send don't fail if netif is down) by
932 letting ip_route only use netifs that are up.
934 2007-11-27 Simon Goldschmidt
935 * err.h, api_lib.c, api_msg.c, sockets.c: Changed error handling: ERR_MEM, ERR_BUF
936 and ERR_RTE are seen as non-fatal, all other errors are fatal. netconns and
937 sockets block most operations once they have seen a fatal error.
939 2007-11-27 Simon Goldschmidt
940 * udp.h, udp.c, dhcp.c: Implemented new function udp_sendto_if which takes the
941 netif to send as an argument (to be able to send on netifs that are down).
943 2007-11-26 Simon Goldschmidt
944 * tcp_in.c: Fixed bug #21582: pcb->acked accounting can be wrong when ACKs
947 2007-11-21 Simon Goldschmidt
948 * tcp.h, tcp_out.c, api_msg.c: Fixed bug #20287: tcp_output_nagle sends too early
949 Fixed the nagle algorithm; nagle now also works for all raw API applications
950 and has to be explicitly disabled with 'tcp_pcb->flags |= TF_NODELAY'
952 2007-11-12 Frédéric Bernon
953 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fixed bug #20900. Now, most
954 of the netconn_peer and netconn_addr processing is done inside tcpip_thread
955 context in do_getaddr.
957 2007-11-10 Simon Goldschmidt
958 * etharp.c: Fixed bug: assert fired when MEMP_ARP_QUEUE was empty (which can
959 happen any time). Now the packet simply isn't enqueued when out of memory.
961 2007-11-01 Simon Goldschmidt
962 * tcp.c, tcp_in.c: Fixed bug #21494: The send mss (pcb->mss) is set to 536 (or
963 TCP_MSS if that is smaller) as long as no MSS option is received from the
966 2007-11-01 Simon Goldschmidt
967 * tcp.h, tcp.c, tcp_in.c: Fixed bug #21491: The MSS option sent (with SYN)
968 is now based on TCP_MSS instead of pcb->mss (on passive open now effectively
969 sending our configured TCP_MSS instead of the one received).
971 2007-11-01 Simon Goldschmidt
972 * tcp_in.c: Fixed bug #21181: On active open, the initial congestion window was
973 calculated based on the configured TCP_MSS, not on the MSS option received
976 2007-10-09 Simon Goldschmidt
977 * udp.c, inet.c, inet.h: Fixed UDPLite: send: Checksum was always generated too
978 short and also was generated wrong if checksum coverage != tot_len;
979 receive: checksum was calculated wrong if checksum coverage != tot_len
981 2007-10-08 Simon Goldschmidt
982 * mem.c: lfree was not updated in mem_realloc!
984 2007-10-07 Frédéric Bernon
985 * sockets.c, api.h, api_lib.c: First step to fix "bug #20900 : Potential
986 crash error problem with netconn_peer & netconn_addr". VERY IMPORTANT:
987 this change cause an API breakage for netconn_addr, since a parameter
988 type change. Any compiler should cause an error without any changes in
989 yours netconn_peer calls (so, it can't be a "silent change"). It also
990 reduce a little bit the footprint for socket layer (lwip_getpeername &
991 lwip_getsockname use now a common lwip_getaddrname function since
992 netconn_peer & netconn_addr have the same parameters).
994 2007-09-20 Simon Goldschmidt
995 * tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state)
996 by checking tcp_tw_pcbs also
998 2007-09-19 Simon Goldschmidt
999 * icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
1001 2007-09-15 Mike Kleshov
1002 * mem.c: Fixed bug #21077 (inaccuracy in calculation of lwip_stat.mem.used)
1004 2007-09-06 Frédéric Bernon
1005 * several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
1006 it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
1007 already include "lwip/arch.h"). Like that, default defines are provided by "lwip/arch.h"
1008 if they are not defined in cc.h, in the same spirit than "lwip/opt.h" for lwipopts.h.
1010 2007-08-30 Frédéric Bernon
1011 * igmp.h, igmp.c: Some changes to remove some redundant code, add some traces,
1012 and fix some coding style.
1014 2007-08-28 Frédéric Bernon
1015 * tcpip.c: Fix TCPIP_MSG_INPKT processing: now, tcpip_input can be used for any
1016 kind of packets. These packets are considered like Ethernet packets (payload
1017 pointing to ethhdr) if the netif got the NETIF_FLAG_ETHARP flag. Else, packets
1018 are considered like IP packets (payload pointing to iphdr).
1020 2007-08-27 Frédéric Bernon
1021 * api.h, api_lib.c, api_msg.c: First fix for "bug #20900 : Potential crash error
1022 problem with netconn_peer & netconn_addr". Introduce NETCONN_LISTEN netconn_state
1023 and remove obsolete ones (NETCONN_RECV & NETCONN_ACCEPT).
1025 2007-08-24 Kieran Mansley
1026 * inet.c Modify (acc >> 16) test to ((acc >> 16) != 0) to help buggy
1027 compiler (Paradigm C++)
1029 2007-08-09 Frédéric Bernon, Bill Florac
1030 * stats.h, stats.c, igmp.h, igmp.c, opt.h: Fix for bug #20503 : IGMP Improvement.
1031 Introduce IGMP_STATS to centralize statistics management.
1033 2007-08-09 Frédéric Bernon, Bill Florac
1034 * udp.c: Fix for bug #20503 : IGMP Improvement. Enable to receive a multicast
1035 packet on a udp pcb binded on an netif's IP address, and not on "any".
1037 2007-08-09 Frédéric Bernon, Bill Florac
1038 * igmp.h, igmp.c, ip.c: Fix minor changes from bug #20503 : IGMP Improvement.
1039 This is mainly on using lookup/lookfor, and some coding styles...
1041 2007-07-26 Frédéric Bernon (and "thedoctor")
1042 * igmp.c: Fix bug #20595 to accept IGMPv3 "Query" messages.
1044 2007-07-25 Simon Goldschmidt
1045 * api_msg.c, tcp.c: Another fix for bug #20021: by not returning an error if
1046 tcp_output fails in tcp_close, the code in do_close_internal gets simpler
1047 (tcp_output is called again later from tcp timers).
1049 2007-07-25 Simon Goldschmidt
1050 * ip_frag.c: Fixed bug #20429: use the new pbuf_copy_partial instead of the old
1051 copy_from_pbuf, which illegally modified the given pbuf.
1053 2007-07-25 Simon Goldschmidt
1054 * tcp_out.c: tcp_enqueue: pcb->snd_queuelen didn't work for chaine PBUF_RAMs:
1055 changed snd_queuelen++ to snd_queuelen += pbuf_clen(p).
1057 2007-07-24 Simon Goldschmidt
1058 * api_msg.c, tcp.c: Fix bug #20480: Check the pcb passed to tcp_listen() for the
1059 correct state (must be CLOSED).
1061 2007-07-13 Thomas Taranowski (commited by Jared Grubb)
1062 * memp.c: Fix bug #20478: memp_malloc returned NULL+MEMP_SIZE on failed
1063 allocation. It now returns NULL.
1065 2007-07-13 Frédéric Bernon
1066 * api_msg.c: Fix bug #20318: api_msg "recv" callbacks don't call pbuf_free in
1069 2007-07-13 Frédéric Bernon
1070 * api_msg.c: Fix bug #20315: possible memory leak problem if tcp_listen failed,
1071 because current code doesn't follow rawapi.txt documentation.
1073 2007-07-13 Kieran Mansley
1074 * src/core/tcp_in.c Apply patch#5741 from Oleg Tyshev to fix bug in
1075 out of sequence processing of received packets
1077 2007-07-03 Simon Goldschmidt
1078 * nearly-all-files: Added assertions where PBUF_RAM pbufs are used and an
1079 assumption is made that this pbuf is in one piece (i.e. not chained). These
1080 assumptions clash with the possibility of converting to fully pool-based
1081 pbuf implementations, where PBUF_RAM pbufs might be chained.
1083 2007-07-03 Simon Goldschmidt
1084 * api.h, api_lib.c, api_msg.c: Final fix for bug #20021 and some other problems
1085 when closing tcp netconns: removed conn->sem, less context switches when
1086 closing, both netconn_close and netconn_delete should safely close tcp
1089 2007-07-02 Simon Goldschmidt
1090 * ipv4/ip.h, ipv6/ip.h, opt.h, netif.h, etharp.h, ipv4/ip.c, netif.c, raw.c,
1091 tcp_out.c, udp.c, etharp.c: Added option LWIP_NETIF_HWADDRHINT (default=off)
1092 to cache ARP table indices with each pcb instead of single-entry cache for
1095 2007-07-02 Simon Goldschmidt
1096 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Added some ASSERTS and casts to prevent
1097 warnings when assigning to smaller types.
1099 2007-06-28 Simon Goldschmidt
1100 * tcp_out.c: Added check to prevent tcp_pcb->snd_queuelen from overflowing.
1102 2007-06-28 Simon Goldschmidt
1103 * tcp.h: Fixed bug #20287: Fixed nagle algorithm (sending was done too early if
1104 a segment contained chained pbufs)
1106 2007-06-28 Frédéric Bernon
1107 * autoip.c: replace most of rand() calls by a macro LWIP_AUTOIP_RAND which compute
1108 a "pseudo-random" value based on netif's MAC and some autoip fields. It's always
1109 possible to define this macro in your own lwipopts.h to always use C library's
1110 rand(). Note that autoip_create_rand_addr doesn't use this macro.
1112 2007-06-28 Frédéric Bernon
1113 * netifapi.h, netifapi.c, tcpip.h, tcpip.c: Update code to handle the option
1114 LWIP_TCPIP_CORE_LOCKING, and do some changes to be coherent with last modifications
1115 in api_lib/api_msg (use pointers and not type with table, etc...)
1117 2007-06-26 Simon Goldschmidt
1118 * udp.h: Fixed bug #20259: struct udp_hdr was lacking the packin defines.
1120 2007-06-25 Simon Goldschmidt
1121 * udp.c: Fixed bug #20253: icmp_dest_unreach was called with a wrong p->payload
1122 for udp packets with no matching pcb.
1124 2007-06-25 Simon Goldschmidt
1125 * udp.c: Fixed bug #20220: UDP PCB search in udp_input(): a non-local match
1126 could get udp input packets if the remote side matched.
1128 2007-06-13 Simon Goldschmidt
1129 * netif.c: Fixed bug #20180 (TCP pcbs listening on IP_ADDR_ANY could get
1130 changed in netif_set_ipaddr if previous netif->ip_addr.addr was 0.
1132 2007-06-13 Simon Goldschmidt
1133 * api_msg.c: pcb_new sets conn->err if protocol is not implemented
1134 -> netconn_new_..() does not allocate a new connection for unsupported
1137 2007-06-13 Frédéric Bernon, Simon Goldschmidt
1138 * api_lib.c: change return expression in netconn_addr and netconn_peer, because
1139 conn->err was reset to ERR_OK without any reasons (and error was lost)...
1141 2007-06-13 Frédéric Bernon, Matthias Weisser
1142 * opt.h, mem.h, mem.c, memp.c, pbuf.c, ip_frag.c, vj.c: Fix bug #20162. Rename
1143 MEM_ALIGN in LWIP_MEM_ALIGN and MEM_ALIGN_SIZE in LWIP_MEM_ALIGN_SIZE to avoid
1144 some macro names collision with some OS macros.
1146 2007-06-11 Simon Goldschmidt
1147 * udp.c: UDP Lite: corrected the use of chksum_len (based on RFC3828: if it's 0,
1148 create checksum over the complete packet. On RX, if it's < 8 (and not 0),
1149 discard the packet. Also removed the duplicate 'udphdr->chksum = 0' for both
1152 2007-06-11 Srinivas Gollakota & Oleg Tyshev
1153 * tcp_out.c: Fix for bug #20075 : "A problem with keep-alive timer and TCP flags"
1154 where TCP flags wasn't initialized in tcp_keepalive.
1156 2007-06-03 Simon Goldschmidt
1157 * udp.c: udp_input(): Input pbuf was not freed if pcb had no recv function
1158 registered, p->payload was modified without modifying p->len if sending
1159 icmp_dest_unreach() (had no negative effect but was definitively wrong).
1161 2007-06-03 Simon Goldschmidt
1162 * icmp.c: Corrected bug #19937: For responding to an icmp echo request, icmp
1163 re-used the input pbuf even if that didn't have enough space to include the
1164 link headers. Now the space is tested and a new pbuf is allocated for the
1165 echo response packet if the echo request pbuf isn't big enough.
1167 2007-06-01 Simon Goldschmidt
1168 * sockets.c: Checked in patch #5914: Moved sockopt processing into tcpip_thread.
1170 2007-05-23 Frédéric Bernon
1171 * api_lib.c, sockets.c: Fixed bug #5958 for netconn_listen (acceptmbox only
1172 allocated by do_listen if success) and netconn_accept errors handling. In
1173 most of api_lib functions, we replace some errors checkings like "if (conn==NULL)"
1174 by ASSERT, except for netconn_delete.
1176 2007-05-23 Frédéric Bernon
1177 * api_lib.c: Fixed bug #5957 "Safe-thread problem inside netconn_recv" to return
1178 an error code if it's impossible to fetch a pbuf on a TCP connection (and not
1179 directly close the recvmbox).
1181 2007-05-22 Simon Goldschmidt
1182 * tcp.c: Fixed bug #1895 (tcp_bind not correct) by introducing a list of
1183 bound but unconnected (and non-listening) tcp_pcbs.
1185 2007-05-22 Frédéric Bernon
1186 * sys.h, sys.c, api_lib.c, tcpip.c: remove sys_mbox_fetch_timeout() (was only
1187 used for LWIP_SO_RCVTIMEO option) and use sys_arch_mbox_fetch() instead of
1188 sys_mbox_fetch() in api files. Now, users SHOULD NOT use internal lwIP features
1189 like "sys_timeout" in their application threads.
1191 2007-05-22 Frédéric Bernon
1192 * api.h, api_lib.c, api_msg.h, api_msg.c: change the struct api_msg_msg to see
1193 which parameters are used by which do_xxx function, and to avoid "misusing"
1194 parameters (patch #5938).
1196 2007-05-22 Simon Goldschmidt
1197 * api_lib.c, api_msg.c, raw.c, api.h, api_msg.h, raw.h: Included patch #5938:
1198 changed raw_pcb.protocol from u16_t to u8_t since for IPv4 and IPv6, proto
1199 is only 8 bits wide. This affects the api, as there, the protocol was
1202 2007-05-18 Simon Goldschmidt
1203 * memp.c: addition to patch #5913: smaller pointer was returned but
1204 memp_memory was the same size -> did not save memory.
1206 2007-05-16 Simon Goldschmidt
1207 * loopif.c, slipif.c: Fix bug #19729: free pbuf if netif->input() returns
1210 2007-05-16 Simon Goldschmidt
1211 * api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same
1212 as the one of the netif used for sending to prevent sending from old
1213 addresses after a netif address gets changed (partly fixes bug #3168).
1215 2007-05-16 Frédéric Bernon
1216 * tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work
1217 with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in
1218 tcpip_init) because we have to be sure that network interfaces are already
1219 added (mac filter is updated only in igmp_init for the moment).
1221 2007-05-16 Simon Goldschmidt
1222 * mem.c, memp.c: Removed semaphores from memp, changed sys_sem_wait calls
1223 into sys_arch_sem_wait calls to prevent timers from running while waiting
1224 for the heap. This fixes bug #19167.
1226 2007-05-13 Simon Goldschmidt
1227 * tcp.h, sockets.h, sockets.c: Fixed bug from patch #5865 by moving the defines
1228 for socket options (lwip_set/-getsockopt) used with level IPPROTO_TCP from
1231 2007-05-07 Simon Goldschmidt
1232 * mem.c: Another attempt to fix bug #17922.
1234 2007-05-04 Simon Goldschmidt
1235 * pbuf.c, pbuf.h, etharp.c: Further update to ARP queueing: Changed pbuf_copy()
1236 implementation so that it can be reused (don't allocate the target
1237 pbuf inside pbuf_copy()).
1239 2007-05-04 Simon Goldschmidt
1240 * memp.c: checked in patch #5913: in memp_malloc() we can return memp as mem
1241 to save a little RAM (next pointer of memp is not used while not in pool).
1244 * sockets.c: Fix ioctl FIONREAD when some data remains from last recv.
1247 2007-04-23 Simon Goldschmidt
1248 * loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results
1249 in NULL reference for incoming TCP packets". Loopif has to be configured
1250 (using LWIP_LOOPIF_MULTITHREADING) to directly call netif->input()
1251 (multithreading environments, e.g. netif->input() = tcpip_input()) or
1252 putting packets on a list that is fed to the stack by calling loopif_poll()
1253 (single-thread / NO_SYS / polling environment where e.g.
1254 netif->input() = ip_input).
1256 2007-04-17 Jonathan Larmour
1257 * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold
1258 the difference between two u16_t's.
1259 * sockets.h: FD_SETSIZE needs to match number of sockets, which is
1260 MEMP_NUM_NETCONN in sockets.c right now.
1262 2007-04-12 Jonathan Larmour
1263 * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580).
1265 2007-04-12 Kieran Mansley
1266 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Modify way the retransmission
1267 timer is reset to fix bug#19434, with help from Oleg Tyshev.
1269 2007-04-11 Simon Goldschmidt
1270 * etharp.c, pbuf.c, pbuf.h: 3rd fix for bug #11400 (arp-queuing): More pbufs than
1271 previously thought need to be copied (everything but PBUF_ROM!). Cleaned up
1272 pbuf.c: removed functions no needed any more (by etharp).
1274 2007-04-11 Kieran Mansley
1275 * inet.c, ip_addr.h, sockets.h, sys.h, tcp.h: Apply patch #5745: Fix
1276 "Constant is long" warnings with 16bit compilers. Contributed by
1277 avatar@mmlab.cse.yzu.edu.tw
1279 2007-04-05 Frédéric Bernon, Jonathan Larmour
1280 * api_msg.c: Fix bug #16830: "err_tcp() posts to connection mailbox when no pend on
1281 the mailbox is active". Now, the post is only done during a connect, and do_send,
1282 do_write and do_join_leave_group don't do anything if a previous error was signaled.
1284 2007-04-03 Frédéric Bernon
1285 * ip.c: Don't set the IP_DF ("Don't fragment") flag in the IP header in IP output
1286 packets. See patch #5834.
1288 2007-03-30 Frédéric Bernon
1289 * api_msg.c: add a "pcb_new" helper function to avoid redundant code, and to add
1290 missing pcb allocations checking (in do_bind, and for each raw_new). Fix style.
1292 2007-03-30 Frédéric Bernon
1293 * most of files: prefix all debug.h define with "LWIP_" to avoid any conflict with
1294 others environment defines (these were too "generic").
1296 2007-03-28 Frédéric Bernon
1297 * api.h, api_lib.c, sockets.c: netbuf_ref doesn't check its internal pbuf_alloc call
1298 result and can cause a crash. lwip_send now check netbuf_ref result.
1300 2007-03-28 Simon Goldschmidt
1301 * sockets.c Remove "#include <errno.h>" from sockets.c to avoid multiple
1302 definition of macros (in errno.h and lwip/arch.h) if LWIP_PROVIDE_ERRNO is
1303 defined. This is the way it should have been already (looking at
1306 2007-03-28 Kieran Mansley
1307 * opt.h Change default PBUF_POOL_BUFSIZE (again) to accomodate default MSS +
1308 IP and TCP headers *and* physical link headers
1310 2007-03-26 Frédéric Bernon (based on patch from Dmitry Potapov)
1311 * api_lib.c: patch for netconn_write(), fixes a possible race condition which cause
1312 to send some garbage. It is not a definitive solution, but the patch does solve
1313 the problem for most cases.
1315 2007-03-22 Frédéric Bernon
1316 * api_msg.h, api_msg.c: Remove obsolete API_MSG_ACCEPT and do_accept (never used).
1318 2007-03-22 Frédéric Bernon
1319 * api_lib.c: somes resources couldn't be freed if there was errors during
1320 netconn_new_with_proto_and_callback.
1322 2007-03-22 Frédéric Bernon
1323 * ethernetif.c: update netif->input calls to check return value. In older ports,
1324 it's a good idea to upgrade them, even if before, there could be another problem
1325 (access to an uninitialized mailbox).
1327 2007-03-21 Simon Goldschmidt
1328 * sockets.c: fixed bug #5067 (essentialy a signed/unsigned warning fixed
1329 by casting to unsigned).
1331 2007-03-21 Frédéric Bernon
1332 * api_lib.c, api_msg.c, tcpip.c: integrate sys_mbox_fetch(conn->mbox, NULL) calls from
1333 api_lib.c to tcpip.c's tcpip_apimsg(). Now, use a local variable and not a
1334 dynamic one from memp to send tcpip_msg to tcpip_thread in a synchrone call.
1335 Free tcpip_msg from tcpip_apimsg is not done in tcpip_thread. This give a
1336 faster and more reliable communication between api_lib and tcpip.
1338 2007-03-21 Frédéric Bernon
1339 * opt.h: Add LWIP_NETIF_CALLBACK (to avoid compiler warning) and set it to 0.
1341 2007-03-21 Frédéric Bernon
1342 * api_msg.c, igmp.c, igmp.h: Fix C++ style comments
1344 2007-03-21 Kieran Mansley
1345 * opt.h Change default PBUF_POOL_BUFSIZE to accomodate default MSS +
1348 2007-03-21 Kieran Mansley
1349 * Fix all uses of pbuf_header to check the return value. In some
1350 cases just assert if it fails as I'm not sure how to fix them, but
1351 this is no worse than before when they would carry on regardless
1354 2007-03-21 Kieran Mansley
1355 * sockets.c, igmp.c, igmp.h, memp.h: Fix C++ style comments and
1356 comment out missing header include in icmp.c
1358 2007-03-20 Frédéric Bernon
1359 * memp.h, stats.c: Fix stats_display function where memp_names table wasn't
1360 synchronized with memp.h.
1362 2007-03-20 Frédéric Bernon
1363 * tcpip.c: Initialize tcpip's mbox, and verify if initialized in tcpip_input,
1364 tcpip_ethinput, tcpip_callback, tcpip_apimsg, to fix a init problem with
1365 network interfaces. Also fix a compiler warning.
1367 2007-03-20 Kieran Mansley
1368 * udp.c: Only try and use pbuf_header() to make space for headers if
1369 not a ROM or REF pbuf.
1371 2007-03-19 Frédéric Bernon
1372 * api_msg.h, api_msg.c, tcpip.h, tcpip.c: Add return types to tcpip_apimsg()
1375 2007-03-19 Frédéric Bernon
1376 * Remove unimplemented "memp_realloc" function from memp.h.
1378 2007-03-11 Simon Goldschmidt
1379 * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused
1382 2007-03-11 Simon Goldschmidt (based on patch from Dmitry Potapov)
1383 * api_lib.c, sockets.c, api.h, api_msg.h, sockets.h: Fixed bug #19251
1384 (missing `const' qualifier in socket functions), to get more compatible to
1385 standard POSIX sockets.
1387 2007-03-11 Frédéric Bernon (based on patch from Dmitry Potapov)
1388 * sockets.c: Add asserts inside bind, connect and sendto to check input
1389 parameters. Remove excessive set_errno() calls after get_socket(), because
1390 errno is set inside of get_socket(). Move last sock_set_errno() inside
1393 2007-03-09 Simon Goldschmidt
1394 * memp.c: Fixed bug #11400: New etharp queueing introduced bug: memp_memory
1395 was allocated too small.
1397 2007-03-06 Simon Goldschmidt
1398 * tcpip.c: Initialize dhcp timers in tcpip_thread (if LWIP_DHCP) to protect
1399 the stack from concurrent access.
1401 2007-03-06 Frédéric Bernon, Dmitry Potapov
1402 * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy
1403 call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().
1405 2007-03-06 Simon Goldschmidt
1406 * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files
1407 if IP_FRAG == 0 and IP_REASSEMBLY == 0
1409 2007-03-06 Frédéric Bernon, Simon Goldschmidt
1410 * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration
1411 option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput.
1412 Allow to do ARP processing for incoming packets inside tcpip_thread
1413 (protecting ARP layer against concurrent access). You can also disable
1414 old code using tcp_input with new define ETHARP_TCPIP_INPUT set to 0.
1415 Older ports have to use tcpip_ethinput.
1417 2007-03-06 Simon Goldschmidt (based on patch from Dmitry Potapov)
1418 * err.h, err.c: fixed compiler warning "initialization dircards qualifiers
1419 from pointer target type"
1421 2007-03-05 Frédéric Bernon
1422 * opt.h, sockets.h: add new configuration options (LWIP_POSIX_SOCKETS_IO_NAMES,
1423 ETHARP_TRUST_IP_MAC, review SO_REUSE)
1425 2007-03-04 Frédéric Bernon
1426 * api_msg.c: Remove some compiler warnings : parameter "pcb" was never
1429 2007-03-04 Frédéric Bernon
1430 * api_lib.c: Fix "[patch #5764] api_lib.c cleanup: after patch #5687" (from
1432 The api_msg struct stay on the stack (not moved to netconn struct).
1434 2007-03-04 Simon Goldschmidt (based on patch from Dmitry Potapov)
1435 * pbuf.c: Fix BUG#19168 - pbuf_free can cause deadlock (if
1436 SYS_LIGHTWEIGHT_PROT=1 & freeing PBUF_RAM when mem_sem is not available)
1437 Also fixed cast warning in pbuf_alloc()
1439 2007-03-04 Simon Goldschmidt
1440 * etharp.c, etharp.h, memp.c, memp.h, opt.h: Fix BUG#11400 - don't corrupt
1441 existing pbuf chain when enqueuing multiple pbufs to a pending ARP request
1443 2007-03-03 Frédéric Bernon
1444 * udp.c: remove obsolete line "static struct udp_pcb *pcb_cache = NULL;"
1445 It is static, and never used in udp.c except udp_init().
1447 2007-03-02 Simon Goldschmidt
1448 * tcpip.c: Moved call to ip_init(), udp_init() and tcp_init() from
1449 tcpip_thread() to tcpip_init(). This way, raw API connections can be
1450 initialized before tcpip_thread is running (e.g. before OS is started)
1452 2007-03-02 Frédéric Bernon
1453 * rawapi.txt: Fix documentation mismatch with etharp.h about etharp_tmr's call
1456 2007-02-28 Kieran Mansley
1457 * pbuf.c: Fix BUG#17645 - ensure pbuf payload pointer is not moved
1458 outside the region of the pbuf by pbuf_header()
1460 2007-02-28 Kieran Mansley
1461 * sockets.c: Fix BUG#19161 - ensure milliseconds timeout is non-zero
1462 when supplied timeout is also non-zero
1466 2006-12-05 Leon Woestenberg
1467 * CHANGELOG: Mention STABLE-1.2.0 release.
1471 2006-12-01 Christiaan Simons
1472 * mem.h, opt.h: Added MEM_LIBC_MALLOC option.
1473 Note this is a workaround. Currently I have no other options left.
1475 2006-10-26 Christiaan Simons (accepted patch by Jonathan Larmour)
1476 * ipv4/ip_frag.c: rename MAX_MTU to IP_FRAG_MAX_MTU and move define
1477 to include/lwip/opt.h.
1478 * ipv4/lwip/ip_frag.h: Remove unused IP_REASS_INTERVAL.
1479 Move IP_REASS_MAXAGE and IP_REASS_BUFSIZE to include/lwip/opt.h.
1480 * opt.h: Add above new options.
1482 2006-08-18 Christiaan Simons
1483 * tcp_{in,out}.c: added SNMP counters.
1484 * ipv4/ip.c: added SNMP counters.
1485 * ipv4/ip_frag.c: added SNMP counters.
1487 2006-08-08 Christiaan Simons
1488 * etharp.{c,h}: added etharp_find_addr() to read
1489 (stable) ethernet/IP address pair from ARP table
1491 2006-07-14 Christiaan Simons
1492 * mib_structs.c: added
1493 * include/lwip/snmp_structs.h: added
1494 * netif.{c,h}, netif/ethernetif.c: added SNMP statistics to netif struct
1496 2006-07-06 Christiaan Simons
1497 * snmp/asn1_{enc,dec}.c added
1499 * snmp/msg_{in,out}.c added
1500 * include/lwip/snmp_asn1.h added
1501 * include/lwip/snmp_msg.h added
1502 * doc/snmp_agent.txt added
1504 2006-03-29 Christiaan Simons
1505 * inet.c, inet.h: Added platform byteswap support.
1506 Added LWIP_PLATFORM_BYTESWAP define (defaults to 0) and
1507 optional LWIP_PLATFORM_HTONS(), LWIP_PLATFORM_HTONL() macros.
1511 2006-11-30 Christiaan Simons
1512 * dhcp.c: Fixed false triggers of request_timeout.
1514 2006-11-28 Christiaan Simons
1515 * netif.c: In netif_add() fixed missing clear of ip_addr, netmask, gw and flags.
1517 2006-10-11 Christiaan Simons
1518 * api_lib.c etharp.c, ip.c, memp.c, stats.c, sys.{c,h} tcp.h:
1519 Partially accepted patch #5449 for ANSI C compatibility / build fixes.
1520 * ipv4/lwip/ip.h ipv6/lwip/ip.h: Corrected UDP-Lite protocol
1521 identifier from 170 to 136 (bug #17574).
1523 2006-10-10 Christiaan Simons
1524 * api_msg.c: Fixed Nagle algorithm as reported by Bob Grice.
1526 2006-08-17 Christiaan Simons
1527 * udp.c: Fixed bug #17200, added check for broadcast
1528 destinations for PCBs bound to a unicast address.
1530 2006-08-07 Christiaan Simons
1531 * api_msg.c: Flushing TCP output in do_close() (bug #15926).
1533 2006-06-27 Christiaan Simons
1534 * api_msg.c: Applied patch for cold case (bug #11135).
1535 In accept_function() ensure newconn->callback is always initialized.
1537 2006-06-15 Christiaan Simons
1538 * mem.h: added MEM_SIZE_F alias to fix an ancient cold case (bug #1748),
1539 facilitate printing of mem_size_t and u16_t statistics.
1541 2006-06-14 Christiaan Simons
1542 * api_msg.c: Applied patch #5146 to handle allocation failures
1543 in accept() by Kevin Lawson.
1545 2006-05-26 Christiaan Simons
1546 * api_lib.c: Removed conn->sem creation and destruction
1547 from netconn_write() and added sys_sem_new to netconn_new_*.
1551 2006-03-03 Christiaan Simons
1552 * ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap
1553 access and added pbuf_alloc() return value checks.
1555 2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net>
1556 * tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is
1557 now handled by the checksum routine properly.
1559 2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1560 * pbuf.c: Fix alignment; pbuf_init() would not work unless
1561 pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.)
1563 2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net>
1564 * tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch
1565 submitted by Mitrani Hiroshi.
1567 2005-12-15 Christiaan Simons
1568 * inet.c: Disabled the added summing routine to preserve code space.
1570 2005-12-14 Leon Woestenberg <leon.woestenberg@gmx.net>
1571 * tcp_in.c: Duplicate FIN ACK race condition fix by Kelvin Lawson.
1572 Added Curt McDowell's optimized checksumming routine for future
1573 inclusion. Need to create test case for unaliged, aligned, odd,
1574 even length combination of cases on various endianess machines.
1576 2005-12-09 Christiaan Simons
1577 * inet.c: Rewrote standard checksum routine in proper portable C.
1579 2005-11-25 Christiaan Simons
1580 * udp.c tcp.c: Removed SO_REUSE hack. Should reside in socket code only.
1581 * *.c: introduced cc.h LWIP_DEBUG formatters matching the u16_t, s16_t,
1582 u32_t, s32_t typedefs. This solves most debug word-length assumes.
1584 2005-07-17 Leon Woestenberg <leon.woestenberg@gmx.net>
1585 * inet.c: Fixed unaligned 16-bit access in the standard checksum
1586 routine by Peter Jolasson.
1587 * slipif.c: Fixed implementation assumption of single-pbuf datagrams.
1589 2005-02-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1590 * tcp_out.c: Fixed uninitialized 'queue' referenced in memerr branch.
1591 * tcp_{out|in}.c: Applied patch fixing unaligned access.
1593 2005-01-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1594 * pbuf.c: Fixed missing semicolon after LWIP_DEBUG statement.
1596 2005-01-03 Leon Woestenberg <leon.woestenberg@gmx.net>
1597 * udp.c: UDP pcb->recv() was called even when it was NULL.
1601 2004-12-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1602 * etharp.*: Disabled multiple packets on the ARP queue.
1603 This clashes with TCP queueing.
1605 2004-11-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1606 * etharp.*: Fixed race condition from ARP request to ARP timeout.
1607 Halved the ARP period, doubled the period counts.
1608 ETHARP_MAX_PENDING now should be at least 2. This prevents
1609 the counter from reaching 0 right away (which would allow
1610 too little time for ARP responses to be received).
1612 2004-11-25 Leon Woestenberg <leon.woestenberg@gmx.net>
1613 * dhcp.c: Decline messages were not multicast but unicast.
1614 * etharp.c: ETHARP_CREATE is renamed to ETHARP_TRY_HARD.
1615 Do not try hard to insert arbitrary packet's source address,
1616 etharp_ip_input() now calls etharp_update() without ETHARP_TRY_HARD.
1617 etharp_query() now always DOES call ETHARP_TRY_HARD so that users
1618 querying an address will see it appear in the cache (DHCP could
1619 suffer from this when a server invalidly gave an in-use address.)
1620 * ipv4/ip_addr.h: Renamed ip_addr_maskcmp() to _netcmp() as we are
1621 comparing network addresses (identifiers), not the network masks
1623 * ipv4/ip_addr.c: ip_addr_isbroadcast() now checks that the given
1624 IP address actually belongs to the network of the given interface.
1626 2004-11-24 Kieran Mansley <kjm25@cam.ac.uk>
1627 * tcp.c: Increment pcb->snd_buf when ACK is received in SYN_SENT state.
1631 2004-10-16 Kieran Mansley <kjm25@cam.ac.uk>
1632 * tcp.c: Add code to tcp_recved() to send an ACK (window update) immediately,
1633 even if one is already pending, if the rcv_wnd is above a threshold
1634 (currently TCP_WND/2). This avoids waiting for a timer to expire to send a
1635 delayed ACK in order to open the window if the stack is only receiving data.
1637 2004-09-12 Kieran Mansley <kjm25@cam.ac.uk>
1638 * tcp*.*: Retransmit time-out handling improvement by Sam Jansen.
1640 2004-08-20 Tony Mountifield <tony@softins.co.uk>
1641 * etharp.c: Make sure the first pbuf queued on an ARP entry
1642 is properly ref counted.
1644 2004-07-27 Tony Mountifield <tony@softins.co.uk>
1645 * debug.h: Added (int) cast in LWIP_DEBUGF() to avoid compiler
1646 warnings about comparison.
1647 * pbuf.c: Stopped compiler complaining of empty if statement
1648 when LWIP_DEBUGF() empty. Closed an unclosed comment.
1649 * tcp.c: Stopped compiler complaining of empty if statement
1650 when LWIP_DEBUGF() empty.
1651 * ip.h Corrected IPH_TOS() macro: returns a byte, so doesn't need htons().
1652 * inet.c: Added a couple of casts to quiet the compiler.
1653 No need to test isascii(c) before isdigit(c) or isxdigit(c).
1655 2004-07-22 Tony Mountifield <tony@softins.co.uk>
1656 * inet.c: Made data types consistent in inet_ntoa().
1657 Added casts for return values of checksum routines, to pacify compiler.
1658 * ip_frag.c, tcp_out.c, sockets.c, pbuf.c
1659 Small corrections to some debugging statements, to pacify compiler.
1661 2004-07-21 Tony Mountifield <tony@softins.co.uk>
1662 * etharp.c: Removed spurious semicolon and added missing end-of-comment.
1663 * ethernetif.c Updated low_level_output() to match prototype for
1664 netif->linkoutput and changed low_level_input() similarly for consistency.
1665 * api_msg.c: Changed recv_raw() from int to u8_t, to match prototype
1666 of raw_recv() in raw.h and so avoid compiler error.
1667 * sockets.c: Added trivial (int) cast to keep compiler happier.
1668 * ip.c, netif.c Changed debug statements to use the tidier ip4_addrN() macros.
1674 2004-07-05 Leon Woestenberg <leon.woestenberg@gmx.net>
1675 * sockets.*: Restructured LWIP_PRIVATE_TIMEVAL. Make sure
1676 your cc.h file defines this either 1 or 0. If non-defined,
1678 * .c: Added <string.h> and <errno.h> includes where used.
1679 * etharp.c: Made some array indices unsigned.
1681 2004-06-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1682 * netif.*: Added netif_set_up()/down().
1683 * dhcp.c: Changes to restart program flow.
1685 2004-05-07 Leon Woestenberg <leon.woestenberg@gmx.net>
1686 * etharp.c: In find_entry(), instead of a list traversal per candidate, do a
1687 single-pass lookup for different candidates. Should exploit locality.
1689 2004-04-29 Leon Woestenberg <leon.woestenberg@gmx.net>
1690 * tcp*.c: Cleaned up source comment documentation for Doxygen processing.
1691 * opt.h: ETHARP_ALWAYS_INSERT option removed to comply with ARP RFC.
1692 * etharp.c: update_arp_entry() only adds new ARP entries when adviced to by
1693 the caller. This deprecates the ETHARP_ALWAYS_INSERT overrule option.
1697 2004-04-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1698 * etharp.c: Applied patch of bug #8708 by Toni Mountifield with a solution
1699 suggested by Timmy Brolin. Fix for 32-bit processors that cannot access
1700 non-aligned 32-bit words, such as soms 32-bit TCP/IP header fields. Fix
1701 is to prefix the 14-bit Ethernet headers with two padding bytes.
1703 2004-04-23 Leon Woestenberg <leon.woestenberg@gmx.net>
1704 * ip_addr.c: Fix in the ip_addr_isbroadcast() check.
1705 * etharp.c: Fixed the case where the packet that initiates the ARP request
1706 is not queued, and gets lost. Fixed the case where the packets destination
1707 address is already known; we now always queue the packet and perform an ARP
1714 * Fixed TCP bug for SYN_SENT to ESTABLISHED state transition.
1715 * Fixed TCP bug in dequeueing of FIN from out of order segment queue.
1716 * Fixed two possible NULL references in rare cases.
1722 * Fixed DHCP which did not include the IP address in DECLINE messages.
1726 * etharp.c has been hauled over a bit.
1732 * Fixed TCP bug induced by bad window resizing with unidirectional TCP traffic.
1733 * Packets sent from ARP queue had invalid source hardware address.
1737 * Pass-by ARP requests do now update the cache.
1741 * No longer dependent on ctype.h.
1742 * New socket options.
1743 * Raw IP pcb support.
1749 * Some debug formatters and casts fixed.
1750 * Numereous fixes in PPP.
1754 * DEBUGF now is LWIP_DEBUGF
1755 * pbuf_dechain() has been re-enabled.
1756 * Mentioned the changed use of CVS branches in README.
1762 * Fixed pool pbuf memory leak in pbuf_alloc().
1763 Occured if not enough PBUF_POOL pbufs for a packet pbuf chain.
1764 Reported by Savin Zlobec.
1766 * PBUF_POOL chains had their tot_len field not set for non-first
1767 pbufs. Fixed in pbuf_alloc().
1771 * Added PPP stack contributed by Marc Boucher
1775 * Now drops short packets for ICMP/UDP/TCP protocols. More robust.
1777 * ARP queueuing now queues the latest packet instead of the first.
1778 This is the RFC recommended behaviour, but can be overridden in
1785 * TCP has been fixed to deal with the new use of the pbuf->ref
1788 * DHCP dhcp_inform() crash bug fixed.
1792 * Removed pbuf_pool_free_cache and pbuf_pool_alloc_cache. Also removed
1793 pbuf_refresh(). This has sped up pbuf pool operations considerably.
1794 Implemented by David Haas.
1800 * The packet buffer implementation has been enhanced to support
1801 zero-copy and copy-on-demand for packet buffers which have their
1802 payloads in application-managed memory.
1803 Implemented by David Haas.
1805 Use PBUF_REF to make a pbuf refer to RAM. lwIP will use zero-copy
1806 if an outgoing packet can be directly sent on the link, or perform
1807 a copy-on-demand when necessary.
1809 The application can safely assume the packet is sent, and the RAM
1810 is available to the application directly after calling udp_send()
1811 or similar function.
1815 * ARP_QUEUEING should now correctly work for all cases, including
1817 Implemented by Leon Woestenberg.
1821 * IP_ADDR_ANY is no longer a NULL pointer. Instead, it is a pointer
1822 to a '0.0.0.0' IP address.
1824 * The packet buffer implementation is changed. The pbuf->ref counter
1825 meaning has changed, and several pbuf functions have been
1826 adapted accordingly.
1828 * netif drivers have to be changed to set the hardware address length field
1829 that must be initialized correctly by the driver (hint: 6 for Ethernet MAC).
1830 See the contrib/ports/c16x cs8900 driver as a driver example.
1832 * netif's have a dhcp field that must be initialized to NULL by the driver.
1833 See the contrib/ports/c16x cs8900 driver as a driver example.
1835 (0.5.x) This file has been unmaintained up to 0.6.1. All changes are
1836 logged in CVS but have not been explained here.
1838 (0.5.3) Changes since version 0.5.2
1842 * memp_malloc(MEMP_API_MSG) could fail with multiple application
1843 threads because it wasn't protected by semaphores.
1847 * struct ip_addr now packed.
1849 * The name of the time variable in arp.c has been changed to ctime
1850 to avoid conflicts with the time() function.
1852 (0.5.2) Changes since version 0.5.1
1856 * A new TCP function, tcp_tmr(), now handles both TCP timers.
1860 * A bug in tcp_parseopt() could cause the stack to hang because of a
1861 malformed TCP option.
1863 * The address of new connections in the accept() function in the BSD
1864 socket library was not handled correctly.
1866 * pbuf_dechain() did not update the ->tot_len field of the tail.
1868 * Aborted TCP connections were not handled correctly in all
1873 * All protocol header structs are now packed.
1875 * The ->len field in the tcp_seg structure now counts the actual
1876 amount of data, and does not add one for SYN and FIN segments.
1878 (0.5.1) Changes since version 0.5.0
1882 * Possible to run as a user process under Linux.
1884 * Preliminary support for cross platform packed structs.
1886 * ARP timer now implemented.
1890 * TCP output queue length was badly initialized when opening
1893 * TCP delayed ACKs were not sent correctly.
1895 * Explicit initialization of BSS segment variables.
1897 * read() in BSD socket library could drop data.
1899 * Problems with memory alignment.
1901 * Situations when all TCP buffers were used could lead to
1904 * TCP MSS option wasn't parsed correctly.
1906 * Problems with UDP checksum calculation.
1908 * IP multicast address tests had endianess problems.
1910 * ARP requests had wrong destination hardware address.
1914 * struct eth_addr changed from u16_t[3] array to u8_t[6].
1916 * A ->linkoutput() member was added to struct netif.
1918 * TCP and UDP ->dest_* struct members where changed to ->remote_*.
1920 * ntoh* macros are now null definitions for big endian CPUs.
1922 (0.5.0) Changes since version 0.4.2
1926 * Redesigned operating system emulation layer to make porting easier.
1928 * Better control over TCP output buffers.
1930 * Documenation added.
1934 * Locking issues in buffer management.
1936 * Bugfixes in the sequential API.
1938 * IP forwarding could cause memory leakage. This has been fixed.
1942 * Directory structure somewhat changed; the core/ tree has been
1945 (0.4.2) Changes since version 0.4.1
1949 * Experimental ARP implementation added.
1951 * Skeleton Ethernet driver added.
1953 * Experimental BSD socket API library added.
1957 * In very intense situations, memory leakage could occur. This has
1962 * Variables named "data" and "code" have been renamed in order to
1963 avoid name conflicts in certain compilers.
1965 * Variable++ have in appliciable cases been translated to ++variable
1966 since some compilers generate better code in the latter case.
1968 (0.4.1) Changes since version 0.4
1972 * TCP: Connection attempts time out earlier than data
1973 transmissions. Nagle algorithm implemented. Push flag set on the
1974 last segment in a burst.
1976 * UDP: experimental support for UDP-Lite extensions.
1980 * TCP: out of order segments were in some cases handled incorrectly,
1981 and this has now been fixed. Delayed acknowledgements was broken
1982 in 0.4, has now been fixed. Binding to an address that is in use
1983 now results in an error. Reset connections sometimes hung an
1984 application; this has been fixed.
1986 * Checksum calculation sometimes failed for chained pbufs with odd
1987 lengths. This has been fixed.
1989 * API: a lot of bug fixes in the API. The UDP API has been improved
1990 and tested. Error reporting and handling has been
1991 improved. Logical flaws and race conditions for incoming TCP
1992 connections has been found and removed.
1994 * Memory manager: alignment issues. Reallocating memory sometimes
1995 failed, this has been fixed.
1997 * Generic library: bcopy was flawed and has been fixed.
2001 * API: all datatypes has been changed from generic ones such as
2002 ints, to specified ones such as u16_t. Functions that return
2003 errors now have the correct type (err_t).
2005 * General: A lot of code cleaned up and debugging code removed. Many
2006 portability issues have been fixed.
2008 * The license was changed; the advertising clause was removed.
2012 * Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri
2013 Kosunen, Mikael Caleres, and Frits Wilmink for reporting and
2016 (0.4) Changes since version 0.3.1
2018 * Memory management has been radically changed; instead of
2019 allocating memory from a shared heap, memory for objects that are
2020 rapidly allocated and deallocated is now kept in pools. Allocation
2021 and deallocation from those memory pools is very fast. The shared
2022 heap is still present but is used less frequently.
2024 * The memory, memory pool, and packet buffer subsystems now support
2025 4-, 2-, or 1-byte alignment.
2027 * "Out of memory" situations are handled in a more robust way.
2029 * Stack usage has been reduced.
2031 * Easier configuration of lwIP parameters such as memory usage,
2032 TTLs, statistics gathering, etc. All configuration parameters are
2033 now kept in a single header file "lwipopts.h".
2035 * The directory structure has been changed slightly so that all
2036 architecture specific files are kept under the src/arch
2039 * Error propagation has been improved, both in the protocol modules
2042 * The code for the RTXC architecture has been implemented, tested
2045 * Bugs have been found and corrected in the TCP, UDP, IP, API, and
2046 the Internet checksum modules.
2048 * Bugs related to porting between a 32-bit and a 16-bit architecture
2049 have been found and corrected.
2051 * The license has been changed slightly to conform more with the
2052 original BSD license, including the advertisement clause.
2054 (0.3.1) Changes since version 0.3
2056 * Fix of a fatal bug in the buffer management. Pbufs with allocated
2057 RAM never returned the RAM when the pbuf was deallocated.
2059 * TCP congestion control, window updates and retransmissions did not
2060 work correctly. This has now been fixed.
2062 * Bugfixes in the API.
2064 (0.3) Changes since version 0.2
2066 * New and improved directory structure. All include files are now
2067 kept in a dedicated include/ directory.
2069 * The API now has proper error handling. A new function,
2070 netconn_err(), now returns an error code for the connection in
2073 * Improvements in the memory management subsystem. The system now
2074 keeps a pointer to the lowest free memory block. A new function,
2075 mem_malloc2() tries to allocate memory once, and if it fails tries
2076 to free some memory and retry the allocation.
2078 * Much testing has been done with limited memory
2079 configurations. lwIP now does a better job when overloaded.
2081 * Some bugfixes and improvements to the buffer (pbuf) subsystem.
2083 * Many bugfixes in the TCP code:
2085 - Fixed a bug in tcp_close().
2087 - The TCP receive window was incorrectly closed when out of
2088 sequence segments was received. This has been fixed.
2090 - Connections are now timed-out of the FIN-WAIT-2 state.
2092 - The initial congestion window could in some cases be too
2093 large. This has been fixed.
2095 - The retransmission queue could in some cases be screwed up. This
2098 - TCP RST flag now handled correctly.
2100 - Out of sequence data was in some cases never delivered to the
2101 application. This has been fixed.
2103 - Retransmitted segments now contain the correct acknowledgment
2104 number and advertised window.
2106 - TCP retransmission timeout backoffs are not correctly computed
2107 (ala BSD). After a number of retransmissions, TCP now gives up
2110 * TCP connections now are kept on three lists, one for active
2111 connections, one for listening connections, and one for
2112 connections that are in TIME-WAIT. This greatly speeds up the fast
2113 timeout processing for sending delayed ACKs.
2115 * TCP now provides proper feedback to the application when a
2116 connection has been successfully set up.
2118 * More comments have been added to the code. The code has also been
2119 somewhat cleaned up.
2121 (0.2) Initial public release.