5 * [Enter new changes just after this line - do not remove this line]
9 2012-03-25: Simon Goldschmidt (idea by Mason)
10 * posix/*: added posix-compatibility include files posix/netdb.h and posix/sys/socket.h
11 which are a simple wrapper to the correct lwIP include files.
13 2012-01-16: Simon Goldschmidt
14 * opt.h, icmp.c: Added option CHECKSUM_GEN_ICMP
16 2011-12-17: Simon Goldschmidt
17 * ip.h: implemented API functions to access so_options of IP pcbs (UDP, TCP, RAW)
20 2011-09-27: Simon Goldschmidt
21 * opt.h, tcp.c, tcp_in.c: Implemented limiting data on ooseq queue (task #9989)
22 (define TCP_OOSEQ_MAX_BYTES / TCP_OOSEQ_MAX_PBUFS in lwipopts.h)
24 2011-09-21: Simon Goldschmidt
25 * opt.h, api.h, api_lib.c, api_msg.h/.c, sockets.c: Implemented timeout on
26 send (TCP only, bug #33820)
28 2011-09-21: Simon Goldschmidt
29 * init.c: Converted runtime-sanity-checks into compile-time checks that can
30 be disabled (since runtime checks can often not be seen on embedded targets)
32 2011-09-11: Simon Goldschmidt
33 * ppp.h, ppp_impl.h: splitted ppp.h to an internal and external header file
34 to get a clear separation of which functions an application or port may use
37 2011-09-11: Simon Goldschmidt
38 * opt.h, tcp_impl.h, tcp.c, udp.h/.c: Added a config option to randomize
39 initial local TCP/UDP ports (so that different port ranges are used after
40 a reboot; bug #33818; this one added tcp_init/udp_init functions again)
42 2011-09-03: Simon Goldschmidt
43 * dhcp.c: DHCP uses LWIP_RAND() for xid's (bug #30302)
45 2011-08-24: Simon Goldschmidt
46 * opt.h, netif.h/.c: added netif remove callback (bug #32397)
48 2011-07-26: Simon Goldschmidt
49 * etharp.c: ETHARP_SUPPORT_VLAN: add support for an external VLAN filter
50 function instead of only checking for one VLAN (define ETHARP_VLAN_CHECK_FN)
52 2011-07-21: Simon Goldschmidt (patch by hanhui)
53 * ip4.c, etharp.c, pbuf.h: bug #33634 ip_forward() have a faulty behaviour:
54 Added pbuf flags to mark incoming packets as link-layer broadcast/multicast.
55 Also added code to allow ip_forward() to forward non-broadcast packets to
56 the input netif (set IP_FORWARD_ALLOW_TX_ON_RX_NETIF==1).
58 2011-07-21: Simon Goldschmidt
59 * sockets.c, opt.h: (bug #30185): added LWIP_FIONREAD_LINUXMODE that makes
60 ioctl/FIONREAD return the size of the next pending datagram.
62 2011-06-26: Simon Goldschmidt (patch by Cameron Gutman)
63 * tcp.c, tcp_out.c: bug #33604: added some more asserts to check that
66 2011-05-25: Simon Goldschmidt
67 * again nearly the whole stack, renamed ip.c to ip4.c, ip_addr.c to ip4_addr.c,
68 combined ipv4/ipv6 inet_chksum.c, added ip.h, ip_addr.h: Combined IPv4
69 and IPv6 code where possible, added defines to access IPv4/IPv6 in non-IP
70 code so that the code is more readable.
72 2011-05-17: Patch by Ivan Delamer (only checked in by Simon Goldschmidt)
73 * nearly the whole stack: Finally, we got decent IPv6 support, big thanks to
74 Ivan! (this is work in progress: we're just post release anyway :-)
76 2011-05-14: Simon Goldschmidt (patch by Stéphane Lesage)
77 * tcpip.c/.h: patch #7449 allow tcpip callback from interrupt with static
83 2013-01-15: Simon Goldschmidt
84 * pbuf.h: fixed bug #38097 pbuf_free_ooseq() warning
86 2013-01-14: Simon Goldschmidt
87 * dns.c: fixed bug #37705 Possible memory corruption in DNS query
89 2013-01-11: Simon Goldschmidt
90 * raw.c: fixed bug #38066 Raw pcbs can alter packet without eating it
92 2012-09-26: Simon Goldschmidt
93 * api_msg.c: fixed bug #37405 'err_tcp()' uses already freed 'netconn' object
95 2012-09-26: patch by Henrik Persson
96 * dhcp.c: patch #7843 Fix corner case with dhcp timeouts
98 2012-09-26: patch by Henrik Persson
99 * dhcp.c: patch #7840 Segfault in dhcp_parse_reply if no end marker in dhcp packet
101 2012-08-22: Simon Goldschmidt
102 * memp.c: fixed bug #37166: memp_sanity check loops itself
104 2012-08-13: Simon Goldschmidt
105 * dhcp.c: fixed bug #36645: Calling dhcp_release before dhcp_start
108 2012-08-13: Simon Goldschmidt
109 * msg_out.c: fixed bug #36840 snmp_send_trap() NULL de-reference if traps
110 configured but no interfaces available
112 2012-08-13: Simon Goldschmidt
113 * dns.c: fixed bug #36899 DNS TTL 0 is cached for a long time
115 2012-05-11: Simon Goldschmidt (patch by Marty)
116 * memp.c: fixed bug #36412: memp.c does not compile when
117 MEMP_OVERFLOW_CHECK > zero and MEMP_SEPARATE_POOLS == 1
119 2012-05-08: Simon Goldschmidt
120 * tcp_out.c: fixed bug #36380: unsent_oversize mismatch in 1.4.1RC1 (this was
121 a debug-check issue only)
123 2012-05-03: Simon Goldschmidt (patch by Sylvain Rochet)
124 * ppp.c: fixed bug #36283 (PPP struct used on header size computation and
127 2012-05-03: Simon Goldschmidt (patch by David Empson)
128 * ppp.c: fixed bug #36388 (PPP: checksum-only in last pbuf leads to pbuf with
131 2012-03-27: Simon Goldschmidt
132 * vj.c: fixed bug #35756 header length calculation problem in ppp/vj.c
134 2012-03-27: Simon Goldschmidt (patch by Mason)
135 * tcp_out.c: fixed bug #35945: SYN packet should provide the recv MSS not the
138 2012-03-25: Simon Goldschmidt
139 * api_msg.c: Fixed bug #35817: do_connect() invalidly signals op_completed
140 for UDP/RAW with LWIP_TCPIP_CORE_LOCKING==1
142 2012-03-25: Simon Goldschmidt
143 * api_msg.h, api_lib.c, api_msg.c, netifapi.c: fixed bug #35931: Name space
144 pollution in api_msg.c and netifapi.c
146 2012-03-22: Simon Goldschmidt
147 * ip4.c: fixed bug #35927: missing refragmentaion in ip_forward
149 2012-03-20: Simon Goldschmidt (patch by Mason)
150 * netdb.c: fixed bug #35907: lwip_gethostbyname_r returns an invalid h_addr_list
152 2012-03-12: Simon Goldschmidt (patch by Bostjan Meglic)
153 * ppp.c: fixed bug #35809: PPP GetMask(): Compiler warning on big endian,
154 possible bug on little endian system
156 2012-02-23: Simon Goldschmidt
157 * etharp.c: fixed bug #35595: Impossible to send broadcast without a gateway
158 (introduced when fixing bug# 33551)
160 2012-02-16: Simon Goldschmidt
161 * ppp.c: fixed pbuf leak when PPP session is aborted through pppSigHUP()
162 (bug #35541: PPP Memory Leak)
164 2012-02-16: Simon Goldschmidt
165 * etharp.c: fixed bug #35531: Impossible to send multicast without a gateway
166 (introduced when fixing bug# 33551)
168 2012-02-16: Simon Goldschmidt (patch by Stéphane Lesage)
169 * msg_in.c, msg_out.c: fixed bug #35536 SNMP: error too big response is malformed
171 2012-02-15: Simon Goldschmidt
172 * init.c: fixed bug #35537: MEMP_NUM_* sanity checks should be disabled with
175 2012-02-12: Simon Goldschmidt
176 * tcp.h, tcp_in.c, tcp_out.c: partly fixed bug #25882: TCP hangs on
177 MSS > pcb->snd_wnd (by not creating segments bigger than half the window)
179 2012-02-11: Simon Goldschmidt
180 * tcp.c: fixed bug #35435: No pcb state check before adding it to time-wait
183 2012-01-22: Simon Goldschmidt
184 * tcp.c, tcp_in.c: fixed bug #35305: pcb may be freed too early on shutdown(WR)
186 2012-01-21: Simon Goldschmidt
187 * tcp.c: fixed bug #34636: FIN_WAIT_2 - Incorrect shutdown of TCP pcb
189 2012-01-20: Simon Goldschmidt
190 * dhcp.c: fixed bug #35151: DHCP asserts on incoming option lengths
192 2012-01-20: Simon Goldschmidt
193 * pbuf.c: fixed bug #35291: NULL pointer in pbuf_copy
195 2011-11-25: Simon Goldschmidt
196 * tcp.h/.c, tcp_impl.h, tcp_in.c: fixed bug #31177: tcp timers can corrupt
197 tcp_active_pcbs in some cases
199 2011-11-23: Simon Goldschmidt
200 * sys.c: fixed bug #34884: sys_msleep() body needs to be surrounded with
203 2011-11-22: Simon Goldschmidt
204 * netif.c, etharp.h/.c: fixed bug #34684: Clear the arp table cache when
205 netif is brought down
207 2011-10-28: Simon Goldschmidt
208 * tcp_in.c: fixed bug #34638: Dead code in tcp_receive - pcb->dupacks
210 2011-10-23: Simon Goldschmidt
211 * mem.c: fixed bug #34429: possible memory corruption with
212 LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT set to 1
214 2011-10-18: Simon Goldschmidt
215 * arch.h, netdb.c: fixed bug #34592: lwip_gethostbyname_r uses nonstandard
218 2011-10-18: Simon Goldschmidt
219 * opt.h: fixed default values of TCP_SNDLOWAT and TCP_SNDQUEUELOWAT for small
220 windows (bug #34176 select after non-blocking send times out)
222 2011-10-18: Simon Goldschmidt
223 * tcp_impl.h, tcp_out.c: fixed bug #34587: TCP_BUILD_MSS_OPTION doesn't
224 consider netif->mtu, causes slow network
226 2011-10-18: Simon Goldschmidt
227 * sockets.c: fixed bug #34581 missing parentheses in udplite sockets code
229 2011-10-18: Simon Goldschmidt
230 * sockets.h: fixed bug #34580 fcntl() is missing in LWIP_COMPAT_SOCKETS
232 2011-10-17: Simon Goldschmidt
233 * api_msg.c: fixed bug #34569: shutdown(SHUT_WR) crashes netconn/socket api
235 2011-10-13: Simon Goldschmidt
236 * tcp_in.c, tcp_out.c: fixed bug #34517 (persist timer is started although no
237 zero window is received) by starting the persist timer when a zero window is
238 received, not when we have more data queued for sending than fits into the
241 2011-10-13: Simon Goldschmidt
242 * def.h, timers.c: fixed bug #34541: LWIP_U32_DIFF is unnecessarily complex
244 2011-10-13: Simon Goldschmidt
245 * sockets.c, api_lib.c: fixed bug #34540: compiler error when CORE_LOCKING is
246 used and not all protocols are enabled
248 2011-10-12: Simon Goldschmidt
249 * pbuf.c: fixed bug #34534: Error in sending fragmented IP if MEM_ALIGNMENT > 4
251 2011-10-09: Simon Goldschmidt
252 * tcp_out.c: fixed bug #34426: tcp_zero_window_probe() transmits incorrect
253 byte value when pcb->unacked != NULL
255 2011-10-09: Simon Goldschmidt
256 * ip4.c: fixed bug #34447 LWIP_IP_ACCEPT_UDP_PORT(dst_port) wrong
258 2011-09-27: Simon Goldschmidt
259 * tcp_in.c, tcp_out.c: Reset pcb->unsent_oversize in 2 more places...
261 2011-09-27: Simon Goldschmidt
262 * tcp_in.c: fixed bug #28288: Data after FIN in oos queue
264 2011-09-27: Simon Goldschmidt
265 * dhcp.c: fixed bug #34406 dhcp_option_hostname() can overflow the pbuf
267 2011-09-24: Simon Goldschmidt
268 * mem.h: fixed bug #34377 MEM_SIZE_F is not defined if MEM_LIBC_MALLOC==1
270 2011-09-23: Simon Goldschmidt
271 * pbuf.h, tcp.c, tcp_in.c: fixed bug #33871: rejecting TCP_EVENT_RECV() for
272 the last packet including FIN can lose data
274 2011-09-22: Simon Goldschmidt
275 * tcp_impl.h: fixed bug #34355: nagle does not take snd_buf/snd_queuelen into
278 2011-09-21: Simon Goldschmidt
279 * opt.h: fixed default value of TCP_SND_BUF to not violate the sanity checks
282 2011-09-20: Simon Goldschmidt
283 * timers.c: fixed bug #34337 (possible NULL pointer in sys_check_timeouts)
285 2011-09-11: Simon Goldschmidt
286 * tcp_out.c: use pcb->mss instead of TCP_MSS for preallocate mss-sized pbufs
289 2011-09-09: Simon Goldschmidt
290 * udp.c: fixed bug #34072: UDP broadcast is received from wrong UDP pcb if
293 2011-09-03: Simon Goldschmidt
294 * tcp_in.c: fixed bug #33952 PUSH flag in incoming packet is lost when packet
295 is aggregated and sent to application
297 2011-09-01: Simon Goldschmidt
298 * opt.h: fixed bug #31809 LWIP_EVENT_API in opts.h is inconsistent compared
301 2011-09-01: Simon Goldschmidt
302 * tcp_in.c: fixed bug #34111 RST for ACK to listening pcb has wrong seqno
304 2011-08-24: Simon Goldschmidt
305 * inet6.h: fixed bug #34124 struct in6_addr does not conform to the standard
307 2011-08-24: Simon Goldschmidt
308 * api_msg.c, sockets.c: fixed bug #33956 Wrong error returned when calling
309 accept() on UDP connections
311 2011-08-24: Simon Goldschmidt
312 * sockets.h: fixed bug #34057 socklen_t should be a typedef
314 2011-08-24: Simon Goldschmidt
315 * pbuf.c: fixed bug #34112 Odd check in pbuf_alloced_custom (typo)
317 2011-08-24: Simon Goldschmidt
318 * dhcp.c: fixed bug #34122 dhcp: hostname can overflow
320 2011-08-24: Simon Goldschmidt
321 * netif.c: fixed bug #34121 netif_add/netif_set_ipaddr fail on NULL ipaddr
323 2011-08-22: Simon Goldschmidt
324 * tcp_out.c: fixed bug #33962 TF_FIN not always set after FIN is sent. (This
325 merely prevents nagle from not transmitting fast after closing.)
327 2011-07-22: Simon Goldschmidt
328 * api_lib.c, api_msg.c, sockets.c, api.h: fixed bug #31084 (socket API returns
329 always EMSGSIZE on non-blocking sockets if data size > send buffers) -> now
330 lwip_send() sends as much as possible for non-blocking sockets
332 2011-07-22: Simon Goldschmidt
333 * pbuf.c/.h, timers.c: freeing ooseq pbufs when the pbuf pool is empty implemented
334 for NO_SYS==1: when not using sys_check_timeouts(), call PBUF_CHECK_FREE_OOSEQ()
335 at regular intervals from main level.
337 2011-07-21: Simon Goldschmidt
338 * etharp.c: fixed bug #33551 (ARP entries may time out although in use) by
339 sending an ARP request when an ARP entry is used in the last minute before
342 2011-07-04: Simon Goldschmidt
343 * sys_arch.txt: Fixed documentation after changing sys arch prototypes for 1.4.0.
345 2011-06-26: Simon Goldschmidt
346 * tcp.c: fixed bug #31723 (tcp_kill_prio() kills pcbs with the same prio) by
347 updating its documentation only.
349 2011-06-26: Simon Goldschmidt
350 * mem.c: fixed bug #33545: With MEM_USE_POOLS==1, mem_malloc can return an
353 2011-06-26: Simon Goldschmidt
354 * mem.c: fixed bug #33544 "warning in mem.c in lwip 1.4.0 with NO_SYS=1"
362 2011-03-27: Simon Goldschmidt
363 * tcp_impl.h, tcp_in.c, tcp_out.c: Removed 'dataptr' from 'struct tcp_seg' and
364 calculate it in tcp_zero_window_probe (the only place where it was used).
366 2010-11-21: Simon Goldschmidt
367 * dhcp.c/.h: Added a function to deallocate the struct dhcp from a netif
370 2010-07-12: Simon Goldschmidt (patch by Stephane Lesage)
371 * ip.c, udp.c/.h, pbuf.h, sockets.c: task #10495: Added support for
372 IP_MULTICAST_LOOP at socket- and raw-API level.
374 2010-06-16: Simon Goldschmidt
375 * ip.c: Added an optional define (LWIP_IP_ACCEPT_UDP_PORT) that can allow
376 link-layer-addressed UDP traffic to be received while a netif is down (just
377 like DHCP during configuration)
379 2010-05-22: Simon Goldschmidt
380 * many many files: bug #27352: removed packing from ip_addr_t, the packed
381 version is now only used in protocol headers. Added global storage for
382 current src/dest IP address while in input functions.
384 2010-05-16: Simon Goldschmidt
385 * def.h: task #10391: Add preprocessor-macros for compile-time htonl
386 calculation (and use them throughout the stack where applicable)
388 2010-05-16: Simon Goldschmidt
389 * opt.h, memp_std.h, memp.c, ppp_oe.h/.c: PPPoE now uses its own MEMP pool
390 instead of the heap (moved struct pppoe_softc from ppp_oe.c to ppp_oe.h)
392 2010-05-16: Simon Goldschmidt
393 * opt.h, memp_std.h, dns.h/.c: DNS_LOCAL_HOSTLIST_IS_DYNAMIC uses its own
394 MEMP pool instead of the heap
396 2010-05-13: Simon Goldschmidt
397 * tcp.c, udp.c: task #6995: Implement SO_REUSEADDR (correctly), added
398 new option SO_REUSE_RXTOALL to pass received UDP broadcast/multicast
399 packets to more than one pcb.
401 2010-05-02: Simon Goldschmidt
402 * netbuf.h/.c, sockets.c, api_msg.c: use checksum-on-copy for sending
403 UDP data for LWIP_NETIF_TX_SINGLE_PBUF==1
405 2010-04-30: Simon Goldschmidt
406 * udp.h/.c, pbuf.h/.c: task #6849: added udp_send(_to/_if) functions that
407 take a precalculated checksum, added pbuf_fill_chksum() to copy data
408 into a pbuf and at the same time calculating the checksum for that data
410 2010-04-29: Simon Goldschmidt
411 * ip_addr.h, etharp.h/.c, autoip.c: Create overridable macros for copying
412 2-byte-aligned IP addresses and MAC addresses
414 2010-04-28: Patch by Bill Auerbach
415 * ip.c: Inline generating IP checksum to save a function call
417 2010-04-14: Simon Goldschmidt
418 * tcpip.h/.c, timers.c: Added an overridable define to get informed when the
419 tcpip_thread processes messages or timeouts to implement a watchdog.
421 2010-03-28: Simon Goldschmidt
422 * ip_frag.c: create a new (contiguous) PBUF_RAM for every outgoing
423 fragment if LWIP_NETIF_TX_SINGLE_PBUF==1
425 2010-03-27: Simon Goldschmidt
426 * etharp.c: Speedup TX by moving code from find_entry to etharp_output/
427 etharp_query to prevent unnecessary function calls (inspired by
430 2010-03-20: Simon Goldschmidt
431 * opt.h, tcpip.c/.h: Added an option to disable tcpip_(un)timeout code
432 since the linker cannot do this automatically to save space.
434 2010-03-20: Simon Goldschmidt
435 * opt.h, etharp.c/.h: Added support for static ARP table entries
437 2010-03-14: Simon Goldschmidt
438 * tcp_impl.h, tcp_out.c, inet_chksum.h/.c: task #6849: Calculate checksum
439 when creating TCP segments, not when (re-)transmitting them.
441 2010-03-07: Simon Goldschmidt
442 * sockets.c: bug #28775 (select/event_callback: only check select_cb_list
443 on change) plus use SYS_LIGHTWEIGHT_PROT to protect the select code.
444 This should speed up receiving data on sockets as the select code in
445 event_callback is only executed when select is waiting.
447 2010-03-06: Simon Goldschmidt
448 * tcp_out.c: task #7013 (Create option to have all packets delivered to
449 netif->output in one piece): Always copy to try to create single pbufs
452 2010-03-06: Simon Goldschmidt
453 * api.h, api_lib.c, sockets.c: task #10167 (sockets: speed up TCP recv
454 by not allocating a netbuf): added function netconn_recv_tcp_pbuf()
455 for tcp netconns to receive pbufs, not netbufs; use that function
458 2010-03-05: Jakob Ole Stoklundsen / Simon Goldschmidt
459 * opt.h, tcp.h, tcp_impl.h, tcp.c, tcp_in.c, tcp_out.c: task #7040:
460 Work on tcp_enqueue: Don't waste memory when chaining segments,
461 added option TCP_OVERSIZE to prevent creating many small pbufs when
462 calling tcp_write with many small blocks of data. Instead, pbufs are
463 allocated larger than needed and the space is used for later calls to
466 2010-02-21: Simon Goldschmidt
467 * stats.c/.h: Added const char* name to mem- and memp-stats for easier
470 2010-02-21: Simon Goldschmidt
471 * tcp.h (and usages), added tcp_impl.h: Splitted API and internal
472 implementation of tcp to make API usage cleare to application programmers
474 2010-02-14: Simon Goldschmidt/Stephane Lesage
475 * ip_addr.h: Improved some defines working on ip addresses, added faster
476 macro to copy addresses that cannot be NULL
478 2010-02-13: Simon Goldschmidt
479 * api.h, api_lib.c, api_msg.c, sockets.c: task #7865 (implement non-
480 blocking send operation)
482 2010-02-12: Simon Goldschmidt
483 * sockets.c/.h: Added a minimal version of posix fctl() to have a
484 standardised way to set O_NONBLOCK for nonblocking sockets.
486 2010-02-12: Simon Goldschmidt
487 * dhcp.c/.h, autoip.c/.h: task #10139 (Prefer statically allocated
488 memory): added autoip_set_struct() and dhcp_set_struct() to let autoip
489 and dhcp work with user-allocated structs instead of callin mem_malloc
491 2010-02-12: Simon Goldschmidt/Jeff Barber
492 * tcp.c/h: patch #6865 (SO_REUSEADDR for TCP): if pcb.so_options has
493 SOF_REUSEADDR set, allow binding to endpoint in TIME_WAIT
495 2010-02-12: Simon Goldschmidt
496 * sys layer: task #10139 (Prefer statically allocated memory): converted
497 mbox and semaphore functions to take pointers to sys_mbox_t/sys_sem_t;
498 converted sys_mbox_new/sys_sem_new to take pointers and return err_t;
499 task #7212: Add Mutex concept in sys_arch (define LWIP_COMPAT_MUTEX
500 to let sys.h use binary semaphores instead of mutexes - as before)
502 2010-02-09: Simon Goldschmidt (Simon Kallweit)
503 * timers.c/.h: Added function sys_restart_timeouts() from patch #7085
504 (Restart system timeout handling)
506 2010-02-09: Simon Goldschmidt
507 * netif.c/.h, removed loopif.c/.h: task #10153 (Integrate loopif into
508 netif.c) - loopif does not have to be created by the port any more,
509 just define LWIP_HAVE_LOOPIF to 1.
511 2010-02-08: Simon Goldschmidt
512 * inet.h, ip_addr.c/.h: Added reentrant versions of inet_ntoa/ipaddr_ntoa
513 inet_ntoa_r/ipaddr_ntoa_r
515 2010-02-08: Simon Goldschmidt
516 * netif.h: Added netif_s/get_igmp_mac_filter() macros
518 2010-02-05: Simon Goldschmidt
519 * netif.h: Added function-like macros to get/set the hostname on a netif
521 2010-02-04: Simon Goldschmidt
522 * nearly every file: Replaced struct ip_addr by typedef ip_addr_t to
523 make changing the actual implementation behind the typedef easier.
525 2010-02-01: Simon Goldschmidt
526 * opt.h, memp_std.h, dns.h, netdb.c, memp.c: Let netdb use a memp pool
527 for allocating memory when getaddrinfo() is called.
529 2010-01-31: Simon Goldschmidt
530 * dhcp.h, dhcp.c: Reworked the code that parses DHCP options: parse
531 them once instead of parsing for every option. This also removes
532 the need for mem_malloc from dhcp_recv and makes it possible to
533 correctly retrieve the BOOTP file.
535 2010-01-30: simon Goldschmidt
536 * sockets.c: Use SYS_LIGHTWEIGHT_PROT instead of a semaphore to protect
539 2010-01-29: Simon Goldschmidt (patch by Laura Garrett)
540 * api.h, api_msg.c, sockets.c: Added except set support in select
543 2010-01-29: Simon Goldschmidt (patch by Laura Garrett)
544 * api.h, sockets.h, err.h, api_lib.c, api_msg.c, sockets.c, err.c:
545 Add non-blocking support for connect (partly from patch #6860),
546 plus many cleanups in socket & netconn API.
548 2010-01-27: Simon Goldschmidt
549 * opt.h, tcp.h, init.c, api_msg.c: Added TCP_SNDQUEUELOWAT corresponding
550 to TCP_SNDLOWAT and added tcp_sndqueuelen() - this fixes bug #28605
552 2010-01-26: Simon Goldschmidt
553 * snmp: Use memp pools for snmp instead of the heap; added 4 new pools.
555 2010-01-14: Simon Goldschmidt
556 * ppp.c/.h: Fixed bug #27856: PPP: Set netif link- and status-callback
557 by adding ppp_set_netif_statuscallback()/ppp_set_netif_linkcallback()
559 2010-01-13: Simon Goldschmidt
560 * mem.c: The heap now may be moved to user-defined memory by defining
561 LWIP_RAM_HEAP_POINTER as a void pointer to that memory's address
562 (patch #6966 and bug #26133)
564 2010-01-10: Simon Goldschmidt (Bill Auerbach)
565 * opt.h, memp.c: patch #6822 (Add option to place memory pools in
568 2010-01-10: Simon Goldschmidt
569 * init.c, igmp.c: patch #6463 (IGMP - Adding Random Delay): added define
570 LWIP_RAND() for lwip-wide randomization (to be defined in cc.h)
572 2009-12-31: Simon Goldschmidt
573 * tcpip.c, init.c, memp.c, sys.c, memp_std.h, sys.h, tcpip.h
574 added timers.c/.h: Separated timer implementation from semaphore/mbox
575 implementation, moved timer implementation to timers.c/.h, timers are
576 now only called from tcpip_thread or by explicitly checking them.
579 2009-12-27: Simon Goldschmidt
580 * opt.h, etharp.h/.c, init.c, tcpip.c: Added an additional option
581 LWIP_ETHERNET to support ethernet without ARP (necessary for pure PPPoE)
586 2011-04-20: Simon Goldschmidt
587 * sys_arch.txt: sys_arch_timeouts() is not needed any more.
589 2011-04-13: Simon Goldschmidt
590 * tcp.c, udp.c: Fixed bug #33048 (Bad range for IP source port numbers) by
591 using ports in the IANA private/dynamic range (49152 through 65535).
593 2011-03-29: Simon Goldschmidt, patch by Emil Lhungdahl:
594 * etharp.h/.c: Fixed broken VLAN support.
596 2011-03-27: Simon Goldschmidt
597 * tcp.c: Fixed bug #32926 (TCP_RMV(&tcp_bound_pcbs) is called on unbound tcp
598 pcbs) by checking if the pcb was bound (local_port != 0).
600 2011-03-27: Simon Goldschmidt
601 * ppp.c: Fixed bug #32280 (ppp: a pbuf is freed twice)
603 2011-03-27: Simon Goldschmidt
604 * sockets.c: Fixed bug #32906: lwip_connect+lwip_send did not work for udp and
605 raw pcbs with LWIP_TCPIP_CORE_LOCKING==1.
607 2011-03-27: Simon Goldschmidt
608 * tcp_out.c: Fixed bug #32820 (Outgoing TCP connections created before route
609 is present never times out) by starting retransmission timer before checking
612 2011-03-22: Simon Goldschmidt
613 * ppp.c: Fixed bug #32648 (PPP code crashes when terminating a link) by only
614 calling sio_read_abort() if the file descriptor is valid.
616 2011-03-14: Simon Goldschmidt
617 * err.h/.c, sockets.c, api_msg.c: fixed bug #31748 (Calling non-blocking connect
618 more than once can render a socket useless) since it mainly involves changing
619 "FATAL" classification of error codes: ERR_USE and ERR_ISCONN just aren't fatal.
621 2011-03-13: Simon Goldschmidt
622 * sockets.c: fixed bug #32769 (ESHUTDOWN is linux-specific) by fixing
623 err_to_errno_table (ERR_CLSD: ENOTCONN instead of ESHUTDOWN), ERR_ISCONN:
624 use EALRADY instead of -1
626 2011-03-13: Simon Goldschmidt
627 * api_lib.c: netconn_accept: return ERR_ABRT instead of ERR_CLSD if the
628 connection has been aborted by err_tcp (since this is not a normal closing
631 2011-03-13: Simon Goldschmidt
632 * tcp.c: tcp_bind: return ERR_VAL instead of ERR_ISCONN when trying to bind
633 with pcb->state != CLOSED
635 2011-02-17: Simon Goldschmidt
636 * rawapi.txt: Fixed bug #32561 tcp_poll argument definition out-of-order in
639 2011-02-17: Simon Goldschmidt
640 * many files: Added missing U/UL modifiers to fix 16-bit-arch portability.
642 2011-01-24: Simon Goldschmidt
643 * sockets.c: Fixed bug #31741: lwip_select seems to have threading problems
645 2010-12-02: Simon Goldschmidt
646 * err.h: Fixed ERR_IS_FATAL so that ERR_WOULDBLOCK is not fatal.
648 2010-11-23: Simon Goldschmidt
649 * api.h, api_lib.c, api_msg.c, sockets.c: netconn.recv_avail is only used for
650 LWIP_SO_RCVBUF and ioctl/FIONREAD.
652 2010-11-23: Simon Goldschmidt
653 * etharp.c: Fixed bug #31720: ARP-queueing: RFC 1122 recommends to queue at
654 least 1 packet -> ARP_QUEUEING==0 now queues the most recent packet.
656 2010-11-23: Simon Goldschmidt
657 * tcp_in.c: Fixed bug #30577: tcp_input: don't discard ACK-only packets after
658 refusing 'refused_data' again.
660 2010-11-22: Simon Goldschmidt
661 * sockets.c: Fixed bug #31590: getsockopt(... SO_ERROR ...) gives EINPROGRESS
662 after a successful nonblocking connection.
664 2010-11-22: Simon Goldschmidt
665 * etharp.c: Fixed bug #31722: IP packets sent with an AutoIP source addr
666 must be sent link-local
668 2010-11-22: Simon Goldschmidt
669 * timers.c: patch #7329: tcp_timer_needed prototype was ifdef'ed out for
672 2010-11-20: Simon Goldschmidt
673 * sockets.c: Fixed bug #31170: lwip_setsockopt() does not set socket number
675 2010-11-20: Simon Goldschmidt
676 * sockets.h: Fixed bug #31304: Changed SHUT_RD, SHUT_WR and SHUT_RDWR to
677 resemble other stacks.
679 2010-11-20: Simon Goldschmidt
680 * dns.c: Fixed bug #31535: TCP_SND_QUEUELEN must be at least 2 or else
681 no-copy TCP writes will never succeed.
683 2010-11-20: Simon Goldschmidt
684 * dns.c: Fixed bug #31701: Error return value from dns_gethostbyname() does
685 not match documentation: return ERR_ARG instead of ERR_VAL if not
686 initialized or wrong argument.
688 2010-10-20: Simon Goldschmidt
689 * sockets.h: Fixed bug #31385: sizeof(struct sockaddr) is 30 but should be 16
691 2010-10-05: Simon Goldschmidt
692 * dhcp.c: Once again fixed #30038: DHCP/AutoIP cooperation failed when
693 replugging the network cable after an AutoIP address was assigned.
695 2010-08-10: Simon Goldschmidt
696 * tcp.c: Fixed bug #30728: tcp_new_port() did not check listen pcbs
698 2010-08-03: Simon Goldschmidt
699 * udp.c, raw.c: Don't chain empty pbufs when sending them (fixes bug #30625)
701 2010-08-01: Simon Goldschmidt (patch by Greg Renda)
702 * ppp.c: Applied patch #7264 (PPP protocols are rejected incorrectly on big
703 endian architectures)
705 2010-07-28: Simon Goldschmidt
706 * api_lib.c, api_msg.c, sockets.c, mib2.c: Fixed compilation with TCP or UDP
709 2010-07-27: Simon Goldschmidt
710 * tcp.c: Fixed bug #30565 (tcp_connect() check bound list): that check did no
711 harm but never did anything
713 2010-07-21: Simon Goldschmidt
714 * ip.c: Fixed invalid fix for bug #30402 (CHECKSUM_GEN_IP_INLINE does not
717 2010-07-16: Kieran Mansley
718 * msg_in.c: Fixed SNMP ASN constant defines to not use ! operator
720 2010-07-10: Simon Goldschmidt
721 * ip.c: Fixed bug #30402: CHECKSUM_GEN_IP_INLINE does not add IP options
723 2010-06-30: Simon Goldschmidt
724 * api_msg.c: fixed bug #30300 (shutdown parameter was not initialized in
727 2010-06-28: Kieran Mansley
728 * timers.c remove unportable printing of C function pointers
730 2010-06-24: Simon Goldschmidt
731 * init.c, timers.c/.h, opt.h, memp_std.h: From patch #7221: added flag
732 NO_SYS_NO_TIMERS to drop timer support for NO_SYS==1 for easier upgrading
734 2010-06-24: Simon Goldschmidt
735 * api(_lib).c/.h, api_msg.c/.h, sockets.c/.h: Fixed bug #10088: Correctly
736 implemented shutdown at socket level.
738 2010-06-21: Simon Goldschmidt
739 * pbuf.c/.h, ip_frag.c/.h, opt.h, memp_std.h: Fixed bug #29361 (ip_frag has
740 problems with zero-copy DMA MACs) by adding custom pbufs and implementing
741 custom pbufs that reference other (original) pbufs. Additionally set
742 IP_FRAG_USES_STATIC_BUF=0 as default to be on the safe side.
744 2010-06-15: Simon Goldschmidt
745 * dhcp.c: Fixed bug #29970: DHCP endian issue parsing option responses
747 2010-06-14: Simon Goldschmidt
748 * autoip.c: Fixed bug #30039: AutoIP does not reuse previous addresses
750 2010-06-12: Simon Goldschmidt
751 * dhcp.c: Fixed bug #30038: dhcp_network_changed doesn't reset AUTOIP coop
754 2010-05-17: Simon Goldschmidt
755 * netdb.c: Correctly NULL-terminate h_addr_list
757 2010-05-16: Simon Goldschmidt
758 * def.h/.c: changed the semantics of LWIP_PREFIX_BYTEORDER_FUNCS to prevent
759 "symbol already defined" i.e. when linking to winsock
761 2010-05-05: Simon Goldschmidt
762 * def.h, timers.c: Fixed bug #29769 (sys_check_timeouts: sys_now() may
765 2010-04-21: Simon Goldschmidt
766 * api_msg.c: Fixed bug #29617 (sometime cause stall on delete listening
769 2010-03-28: Luca Ceresoli
770 * ip_addr.c/.h: patch #7143: Add a few missing const qualifiers
772 2010-03-27: Luca Ceresoli
773 * mib2.c: patch #7130: remove meaningless const qualifiers
775 2010-03-26: Simon Goldschmidt
776 * tcp_out.c: Make LWIP_NETIF_TX_SINGLE_PBUF work for TCP, too
778 2010-03-26: Simon Goldschmidt
779 * various files: Fixed compiling with different options disabled (TCP/UDP),
780 triggered by bug #29345; don't allocate acceptmbox if LWIP_TCP is disabled
782 2010-03-25: Simon Goldschmidt
783 * sockets.c: Fixed bug #29332: lwip_select() processes readset incorrectly
785 2010-03-25: Simon Goldschmidt
786 * tcp_in.c, test_tcp_oos.c: Fixed bug #29080: Correctly handle remote side
787 overrunning our rcv_wnd in ooseq case.
789 2010-03-22: Simon Goldschmidt
790 * tcp.c: tcp_listen() did not copy the pcb's prio.
792 2010-03-19: Simon Goldschmidt
793 * snmp_msg.c: Fixed bug #29256: SNMP Trap address was not correctly set
795 2010-03-14: Simon Goldschmidt
796 * opt.h, etharp.h: Fixed bug #29148 (Incorrect PBUF_POOL_BUFSIZE for ports
797 where ETH_PAD_SIZE > 0) by moving definition of ETH_PAD_SIZE to opt.h
798 and basing PBUF_LINK_HLEN on it.
800 2010-03-08: Simon Goldschmidt
801 * netif.c, ipv4/ip.c: task #10241 (AutoIP: don't break existing connections
802 when assiging routable address): when checking incoming packets and
803 aborting existing connection on address change, filter out link-local
806 2010-03-06: Simon Goldschmidt
807 * sockets.c: Fixed LWIP_NETIF_TX_SINGLE_PBUF for LWIP_TCPIP_CORE_LOCKING
809 2010-03-06: Simon Goldschmidt
810 * ipv4/ip.c: Don't try to forward link-local addresses
812 2010-03-06: Simon Goldschmidt
813 * etharp.c: Fixed bug #29087: etharp: don't send packets for LinkLocal-
816 2010-03-05: Simon Goldschmidt
817 * dhcp.c: Fixed bug #29072: Correctly set ciaddr based on message-type
820 2010-03-05: Simon Goldschmidt
821 * api_msg.c: Correctly set TCP_WRITE_FLAG_MORE when netconn_write is split
822 into multiple calls to tcp_write.
824 2010-02-21: Simon Goldschmidt
825 * opt.h, mem.h, dns.c: task #10140: Remove DNS_USES_STATIC_BUF (keep
826 the implementation of DNS_USES_STATIC_BUF==1)
828 2010-02-20: Simon Goldschmidt
829 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Task #10088: Correctly implement
830 close() vs. shutdown(). Now the application does not get any more
831 recv callbacks after calling tcp_close(). Added tcp_shutdown().
833 2010-02-19: Simon Goldschmidt
834 * mem.c/.h, pbuf.c: Renamed mem_realloc() to mem_trim() to prevent
835 confusion with realloc()
837 2010-02-15: Simon Goldschmidt/Stephane Lesage
838 * netif.c/.h: Link status does not depend on LWIP_NETIF_LINK_CALLBACK
841 2010-02-14: Simon Goldschmidt
842 * netif.c: Fixed bug #28877 (Duplicate ARP gratuitous packet with
843 LWIP_NETIF_LINK_CALLBACK set on) by only sending if both link- and
844 admin-status of a netif are up
846 2010-02-14: Simon Goldschmidt
847 * opt.h: Disable ETHARP_TRUST_IP_MAC by default since it slows down packet
848 reception and is not really necessary
850 2010-02-14: Simon Goldschmidt
851 * etharp.c/.h: Fixed ARP input processing: only add a new entry if a
852 request was directed as us (RFC 826, Packet Reception), otherwise
853 only update existing entries; internalized some functions
855 2010-02-14: Simon Goldschmidt
856 * netif.h, etharp.c, tcpip.c: Fixed bug #28183 (ARP and TCP/IP cannot be
857 disabled on netif used for PPPoE) by adding a new netif flag
858 (NETIF_FLAG_ETHERNET) that tells the stack the device is an ethernet
859 device but prevents usage of ARP (so that ethernet_input can be used
862 2010-02-12: Simon Goldschmidt
863 * netif.c: netif_set_link_up/down: only do something if the link state
866 2010-02-12: Simon Goldschmidt/Stephane Lesage
867 * api_msg.c: Fixed bug #28865 (Cannot close socket/netconn in non-blocking
870 2010-02-12: Simon Goldschmidt
871 * mem.h: Fixed bug #28866 (mem_realloc function defined in mem.h)
873 2010-02-09: Simon Goldschmidt
874 * api_lib.c, api_msg.c, sockets.c, api.h, api_msg.h: Fixed bug #22110
875 (recv() makes receive window update for data that wasn't received by
878 2010-02-09: Simon Goldschmidt/Stephane Lesage
879 * sockets.c: Fixed bug #28853 (lwip_recvfrom() returns 0 on receive time-out
880 or any netconn_recv() error)
882 2010-02-09: Simon Goldschmidt
883 * ppp.c: task #10154 (PPP: Update snmp in/out counters for tx/rx packets)
885 2010-02-09: Simon Goldschmidt
886 * netif.c: For loopback packets, adjust the stats- and snmp-counters
887 for the loopback netif.
889 2010-02-08: Simon Goldschmidt
890 * igmp.c/.h, ip.h: Moved most defines from igmp.h to igmp.c for clarity
891 since they are not used anywhere else.
893 2010-02-08: Simon Goldschmidt (Stéphane Lesage)
894 * igmp.c, igmp.h, stats.c, stats.h: Improved IGMP stats
895 (patch from bug #28798)
897 2010-02-08: Simon Goldschmidt (Stéphane Lesage)
898 * igmp.c: Fixed bug #28798 (Error in "Max Response Time" processing) and
899 another bug when LWIP_RAND() returns zero.
901 2010-02-04: Simon Goldschmidt
902 * nearly every file: Use macros defined in ip_addr.h (some of them new)
903 to work with IP addresses (preparation for bug #27352 - Change ip_addr
904 from struct to typedef (u32_t) - and better code).
906 2010-01-31: Simon Goldschmidt
907 * netif.c: Don't call the link-callback from netif_set_up/down() since
908 this invalidly retriggers DHCP.
910 2010-01-29: Simon Goldschmidt
911 * ip_addr.h, inet.h, def.h, inet.c, def.c, more: Cleanly separate the
912 portability file inet.h and its contents from the stack: moved htonX-
913 functions to def.h (and the new def.c - they are not ipv4 dependent),
914 let inet.h depend on ip_addr.h and not the other way round.
915 This fixes bug #28732.
917 2010-01-28: Kieran Mansley
918 * tcp.c: Ensure ssthresh >= 2*MSS
920 2010-01-27: Simon Goldschmidt
921 * tcp.h, tcp.c, tcp_in.c: Fixed bug #27871: Calling tcp_abort() in recv
922 callback can lead to accessing unallocated memory. As a consequence,
923 ERR_ABRT means the application has called tcp_abort()!
925 2010-01-25: Simon Goldschmidt
926 * snmp_structs.h, msg_in.c: Partly fixed bug #22070 (MIB_OBJECT_WRITE_ONLY
927 not implemented in SNMP): write-only or not-accessible are still
928 returned by getnext (though not by get)
930 2010-01-24: Simon Goldschmidt
931 * snmp: Renamed the private mib node from 'private' to 'mib_private' to
932 not use reserved C/C++ keywords
934 2010-01-23: Simon Goldschmidt
935 * sockets.c: Fixed bug #28716: select() returns 0 after waiting for less
938 2010-01-21: Simon Goldschmidt
939 * tcp.c, api_msg.c: Fixed bug #28651 (tcp_connect: no callbacks called
940 if tcp_enqueue fails) both in raw- and netconn-API
942 2010-01-19: Simon Goldschmidt
943 * api_msg.c: Fixed bug #27316: netconn: Possible deadlock in err_tcp
945 2010-01-18: Iordan Neshev/Simon Goldschmidt
946 * src/netif/ppp: reorganised PPP sourcecode to 2.3.11 including some
947 bugfix backports from 2.4.x.
949 2010-01-18: Simon Goldschmidt
950 * mem.c: Fixed bug #28679: mem_realloc calculates mem_stats wrong
952 2010-01-17: Simon Goldschmidt
953 * api_lib.c, api_msg.c, (api_msg.h, api.h, sockets.c, tcpip.c):
954 task #10102: "netconn: clean up conn->err threading issues" by adding
955 error return value to struct api_msg_msg
957 2010-01-17: Simon Goldschmidt
958 * api.h, api_lib.c, sockets.c: Changed netconn_recv() and netconn_accept()
959 to return err_t (bugs #27709 and #28087)
961 2010-01-14: Simon Goldschmidt
962 * ...: Use typedef for function prototypes throughout the stack.
964 2010-01-13: Simon Goldschmidt
965 * api_msg.h/.c, api_lib.c: Fixed bug #26672 (close connection when receive
966 window = 0) by correctly draining recvmbox/acceptmbox
968 2010-01-11: Simon Goldschmidt
969 * pap.c: Fixed bug #13315 (PPP PAP authentication can result in
970 erroneous callbacks) by copying the code from recent pppd
972 2010-01-10: Simon Goldschmidt
973 * raw.c: Fixed bug #28506 (raw_bind should filter received packets)
975 2010-01-10: Simon Goldschmidt
976 * tcp.h/.c: bug #28127 (remove call to tcp_output() from tcp_ack(_now)())
978 2010-01-08: Simon Goldschmidt
979 * sockets.c: Fixed bug #28519 (lwip_recvfrom bug with len > 65535)
981 2010-01-08: Simon Goldschmidt
982 * dns.c: Copy hostname for DNS_LOCAL_HOSTLIST_IS_DYNAMIC==1 since string
983 passed to dns_local_addhost() might be volatile
985 2010-01-07: Simon Goldschmidt
986 * timers.c, tcp.h: Call tcp_timer_needed() with NO_SYS==1, too
988 2010-01-06: Simon Goldschmidt
989 * netdb.h: Fixed bug #28496: missing include guards in netdb.h
991 2009-12-31: Simon Goldschmidt
992 * many ppp files: Reorganised PPP source code from ucip structure to pppd
993 structure to easily compare our code against the pppd code (around v2.3.1)
995 2009-12-27: Simon Goldschmidt
996 * tcp_in.c: Another fix for bug #28241 (ooseq processing) and adapted
1004 2009-10-27 Simon Goldschmidt/Stephan Lesage
1005 * netifapi.c/.h: Added netifapi_netif_set_addr()
1007 2009-10-07 Simon Goldschmidt/Fabian Koch
1008 * api_msg.c, netbuf.c/.h, opt.h: patch #6888: Patch for UDP Netbufs to
1009 support dest-addr and dest-port (optional: LWIP_NETBUF_RECVINFO)
1011 2009-08-26 Simon Goldschmidt/Simon Kallweit
1012 * slipif.c/.h: bug #26397: SLIP polling support
1014 2009-08-25 Simon Goldschmidt
1015 * opt.h, etharp.h/.c: task #9033: Support IEEE 802.1q tagged frame (VLAN),
1016 New configuration options ETHARP_SUPPORT_VLAN and ETHARP_VLAN_CHECK.
1018 2009-08-25 Simon Goldschmidt
1019 * ip_addr.h, netdb.c: patch #6900: added define ip_ntoa(struct ip_addr*)
1021 2009-08-24 Jakob Stoklund Olesen
1022 * autoip.c, dhcp.c, netif.c: patch #6725: Teach AutoIP and DHCP to respond
1023 to netif_set_link_up().
1025 2009-08-23 Simon Goldschmidt
1026 * tcp.h/.c: Added function tcp_debug_state_str() to convert a tcp state
1027 to a human-readable string.
1031 2009-12-24: Kieran Mansley
1032 * tcp_in.c Apply patches from Oleg Tyshev to improve OOS processing
1035 2009-12-06: Simon Goldschmidt
1036 * ppp.h/.c: Fixed bug #27079 (Yet another leak in PPP): outpacket_buf can
1037 be statically allocated (like in ucip)
1039 2009-12-04: Simon Goldschmidt (patch by Ioardan Neshev)
1040 * pap.c: patch #6969: PPP: missing PAP authentication UNTIMEOUT
1042 2009-12-03: Simon Goldschmidt
1043 * tcp.h, tcp_in.c, tcp_out.c: Fixed bug #28106: dup ack for fast retransmit
1044 could have non-zero length
1046 2009-12-02: Simon Goldschmidt
1047 * tcp_in.c: Fixed bug #27904: TCP sends too many ACKs: delay resetting
1048 tcp_input_pcb until after calling the pcb's callbacks
1050 2009-11-29: Simon Goldschmidt
1051 * tcp_in.c: Fixed bug #28054: Two segments with FIN flag on the out-of-
1052 sequence queue, also fixed PBUF_POOL leak in the out-of-sequence code
1054 2009-11-29: Simon Goldschmidt
1055 * pbuf.c: Fixed bug #28064: pbuf_alloc(PBUF_POOL) is not thread-safe by
1056 queueing a call into tcpip_thread to free ooseq-bufs if the pool is empty
1058 2009-11-26: Simon Goldschmidt
1059 * tcp.h: Fixed bug #28098: Nagle can prevent fast retransmit from sending
1062 2009-11-26: Simon Goldschmidt
1063 * tcp.h, sockets.c: Fixed bug #28099: API required to disable Nagle
1064 algorithm at PCB level
1066 2009-11-22: Simon Goldschmidt
1067 * tcp_out.c: Fixed bug #27905: FIN isn't combined with data on unsent
1069 2009-11-22: Simon Goldschmidt (suggested by Bill Auerbach)
1070 * tcp.c: tcp_alloc: prevent increasing stats.err for MEMP_TCP_PCB when
1071 reusing time-wait pcb
1073 2009-11-20: Simon Goldschmidt (patch by Albert Bartel)
1074 * sockets.c: Fixed bug #28062: Data received directly after accepting
1075 does not wake up select
1077 2009-11-11: Simon Goldschmidt
1078 * netdb.h: Fixed bug #27994: incorrect define for freeaddrinfo(addrinfo)
1080 2009-10-30: Simon Goldschmidt
1081 * opt.h: Increased default value for TCP_MSS to 536, updated default
1082 value for TCP_WND to 4*TCP_MSS to keep delayed ACK working.
1084 2009-10-28: Kieran Mansley
1085 * tcp_in.c, tcp_out.c, tcp.h: re-work the fast retransmission code
1086 to follow algorithm from TCP/IP Illustrated
1088 2009-10-27: Kieran Mansley
1089 * tcp_in.c: fix BUG#27445: grow cwnd with every duplicate ACK
1091 2009-10-25: Simon Goldschmidt
1092 * tcp.h: bug-fix in the TCP_EVENT_RECV macro (has to call tcp_recved if
1093 pcb->recv is NULL to keep rcv_wnd correct)
1095 2009-10-25: Simon Goldschmidt
1096 * tcp_in.c: Fixed bug #26251: RST process in TIME_WAIT TCP state
1098 2009-10-23: Simon Goldschmidt (David Empson)
1099 * tcp.c: Fixed bug #27783: Silly window avoidance for small window sizes
1101 2009-10-21: Simon Goldschmidt
1102 * tcp_in.c: Fixed bug #27215: TCP sent() callback gives leading and
1103 trailing 1 byte len (SYN/FIN)
1105 2009-10-21: Simon Goldschmidt
1106 * tcp_out.c: Fixed bug #27315: zero window probe and FIN
1108 2009-10-19: Simon Goldschmidt
1109 * dhcp.c/.h: Minor code simplification (don't store received pbuf, change
1110 conditional code to assert where applicable), check pbuf length before
1111 testing for valid reply
1113 2009-10-19: Simon Goldschmidt
1114 * dhcp.c: Removed most calls to udp_connect since they aren't necessary
1115 when using udp_sendto_if() - always stay connected to IP_ADDR_ANY.
1117 2009-10-16: Simon Goldschmidt
1118 * ip.c: Fixed bug #27390: Source IP check in ip_input() causes it to drop
1119 valid DHCP packets -> allow 0.0.0.0 as source address when LWIP_DHCP is
1122 2009-10-15: Simon Goldschmidt (Oleg Tyshev)
1123 * tcp_in.c: Fixed bug #27329: dupacks by unidirectional data transmit
1125 2009-10-15: Simon Goldschmidt
1126 * api_lib.c: Fixed bug #27709: conn->err race condition on netconn_recv()
1129 2009-10-15: Simon Goldschmidt
1130 * autoip.c: Fixed bug #27704: autoip starts with wrong address
1131 LWIP_AUTOIP_CREATE_SEED_ADDR() returned address in host byte order instead
1132 of network byte order
1134 2009-10-11 Simon Goldschmidt (Jörg Kesten)
1135 * tcp_out.c: Fixed bug #27504: tcp_enqueue wrongly concatenates segments
1136 which are not consecutive when retransmitting unacked segments
1138 2009-10-09 Simon Goldschmidt
1139 * opt.h: Fixed default values of some stats to only be enabled if used
1140 Fixes bug #27338: sys_stats is defined when NO_SYS = 1
1142 2009-08-30 Simon Goldschmidt
1143 * ip.c: Fixed bug bug #27345: "ip_frag() does not use the LWIP_NETIF_LOOPBACK
1144 function" by checking for loopback before calling ip_frag
1146 2009-08-25 Simon Goldschmidt
1147 * dhcp.c: fixed invalid dependency to etharp_query if DHCP_DOES_ARP_CHECK==0
1149 2009-08-23 Simon Goldschmidt
1150 * ppp.c: bug #27078: Possible memory leak in pppInit()
1152 2009-08-23 Simon Goldschmidt
1153 * netdb.c, dns.c: bug #26657: DNS, if host name is "localhost", result
1156 2009-08-23 Simon Goldschmidt
1157 * opt.h, init.c: bug #26649: TCP fails when TCP_MSS > TCP_SND_BUF
1158 Fixed wrong parenthesis, added check in init.c
1160 2009-08-23 Simon Goldschmidt
1161 * ppp.c: bug #27266: wait-state debug message in pppMain occurs every ms
1163 2009-08-23 Simon Goldschmidt
1164 * many ppp files: bug #27267: Added include to string.h where needed
1166 2009-08-23 Simon Goldschmidt
1167 * tcp.h: patch #6843: tcp.h macro optimization patch (for little endian)
1174 2009-05-10 Simon Goldschmidt
1175 * opt.h, sockets.c, pbuf.c, netbuf.h, pbuf.h: task #7013: Added option
1176 LWIP_NETIF_TX_SINGLE_PBUF to try to create transmit packets from only
1177 one pbuf to help MACs that don't support scatter-gather DMA.
1179 2009-05-09 Simon Goldschmidt
1180 * icmp.h, icmp.c: Shrinked ICMP code, added option to NOT check icoming
1181 ECHO pbuf for size (just use it): LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN
1183 2009-05-05 Simon Goldschmidt, Jakob Stoklund Olesen
1184 * ip.h, ip.c: Added ip_current_netif() & ip_current_header() to receive
1185 extended info about the currently received packet.
1187 2009-04-27 Simon Goldschmidt
1188 * sys.h: Made SYS_LIGHTWEIGHT_PROT and sys_now() work with NO_SYS=1
1190 2009-04-25 Simon Goldschmidt
1191 * mem.c, opt.h: Added option MEM_USE_POOLS_TRY_BIGGER_POOL to try the next
1192 bigger malloc pool if one is empty (only usable with MEM_USE_POOLS).
1194 2009-04-21 Simon Goldschmidt
1195 * dns.c, init.c, dns.h, opt.h: task #7507, patch #6786: DNS supports static
1196 hosts table. New configuration options DNS_LOCAL_HOSTLIST and
1197 DNS_LOCAL_HOSTLIST_IS_DYNAMIC. Also, DNS_LOOKUP_LOCAL_EXTERN() can be defined
1198 as an external function for lookup.
1200 2009-04-15 Simon Goldschmidt
1201 * dhcp.c: patch #6763: Global DHCP XID can be redefined to something more unique
1203 2009-03-31 Kieran Mansley
1204 * tcp.c, tcp_out.c, tcp_in.c, sys.h, tcp.h, opts.h: add support for
1205 TCP timestamp options, off by default. Rework tcp_enqueue() to
1206 take option flags rather than specified option data
1208 2009-02-18 Simon Goldschmidt
1209 * cc.h: Added printf formatter for size_t: SZT_F
1211 2009-02-16 Simon Goldschmidt (patch by Rishi Khan)
1212 * icmp.c, opt.h: patch #6539: (configurable) response to broadcast- and multicast
1215 2009-02-12 Simon Goldschmidt
1216 * init.h: Added LWIP_VERSION to get the current version of the stack
1218 2009-02-11 Simon Goldschmidt (suggested by Gottfried Spitaler)
1219 * opt.h, memp.h/.c: added MEMP_MEM_MALLOC to use mem_malloc/mem_free instead
1220 of the pool allocator (can save code size with MEM_LIBC_MALLOC if libc-malloc
1223 2009-01-28 Jonathan Larmour (suggested by Bill Bauerbach)
1224 * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h: inet_chksum_pseudo_partial()
1225 is only used by UDPLITE at present, so conditionalise it.
1227 2008-12-03 Simon Goldschmidt (base on patch from Luca Ceresoli)
1228 * autoip.c: checked in (slightly modified) patch #6683: Customizable AUTOIP
1229 "seed" address. This should reduce AUTOIP conflicts if
1230 LWIP_AUTOIP_CREATE_SEED_ADDR is overridden.
1232 2008-10-02 Jonathan Larmour and Rishi Khan
1233 * sockets.c (lwip_accept): Return EWOULDBLOCK if would block on non-blocking
1236 2008-06-30 Simon Goldschmidt
1237 * mem.c, opt.h, stats.h: fixed bug #21433: Calling mem_free/pbuf_free from
1238 interrupt context isn't safe: LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT allows
1239 mem_free to run between mem_malloc iterations. Added illegal counter for
1242 2008-06-27 Simon Goldschmidt
1243 * stats.h/.c, some other files: patch #6483: stats module improvement:
1244 Added defines to display each module's statistic individually, added stats
1245 defines for MEM, MEMP and SYS modules, removed (unused) rexmit counter.
1247 2008-06-17 Simon Goldschmidt
1248 * err.h: patch #6459: Made err_t overridable to use a more efficient type
1249 (define LWIP_ERR_T in cc.h)
1251 2008-06-17 Simon Goldschmidt
1252 * slipif.c: patch #6480: Added a configuration option for slipif for symmetry
1255 2008-06-17 Simon Goldschmidt (patch by Luca Ceresoli)
1256 * netif.c, loopif.c, ip.c, netif.h, loopif.h, opt.h: Checked in slightly
1257 modified version of patch # 6370: Moved loopif code to netif.c so that
1258 loopback traffic is supported on all netifs (all local IPs).
1259 Added option to limit loopback packets for each netifs.
1263 2009-08-12 Kieran Mansley
1264 * tcp_in.c, tcp.c: Fix bug #27209: handle trimming of segments when
1265 out of window or out of order properly
1267 2009-08-12 Kieran Mansley
1268 * tcp_in.c: Fix bug #27199: use snd_wl2 instead of snd_wl1
1270 2009-07-28 Simon Goldschmidt
1271 * mem.h: Fixed bug #27105: "realloc() cannot replace mem_realloc()"s
1273 2009-07-27 Kieran Mansley
1274 * api.h api_msg.h netdb.h sockets.h: add missing #include directives
1276 2009-07-09 Kieran Mansley
1277 * api_msg.c, sockets.c, api.h: BUG23240 use signed counters for
1278 recv_avail and don't increment counters until message successfully
1281 2009-06-25 Kieran Mansley
1282 * api_msg.c api.h: BUG26722: initialise netconn write variables
1285 2009-06-25 Kieran Mansley
1286 * tcp.h: BUG26879: set ret value in TCP_EVENT macros when function is not set
1288 2009-06-25 Kieran Mansley
1289 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: BUG26301 and BUG26267: correct
1290 simultaneous close behaviour, and make snd_nxt have the same meaning
1293 2009-05-12 Simon Goldschmidt
1294 * etharp.h, etharp.c, netif.c: fixed bug #26507: "Gratuitous ARP depends on
1295 arp_table / uses etharp_query" by adding etharp_gratuitous()
1297 2009-05-12 Simon Goldschmidt
1298 * ip.h, ip.c, igmp.c: bug #26487: Added ip_output_if_opt that can add IP options
1299 to the IP header (used by igmp_ip_output_if)
1301 2009-05-06 Simon Goldschmidt
1302 * inet_chksum.c: On little endian architectures, use LWIP_PLATFORM_HTONS (if
1303 defined) for SWAP_BYTES_IN_WORD to speed up checksumming.
1305 2009-05-05 Simon Goldschmidt
1306 * sockets.c: bug #26405: Prematurely released semaphore causes lwip_select()
1309 2009-05-04 Simon Goldschmidt
1310 * init.c: snmp was not initialized in lwip_init()
1312 2009-05-04 Frédéric Bernon
1313 * dhcp.c, netbios.c: Changes if IP_SOF_BROADCAST is enabled.
1315 2009-05-03 Simon Goldschmidt
1316 * tcp.h: bug #26349: Nagle algorithm doesn't send although segment is full
1317 (and unsent->next == NULL)
1319 2009-05-02 Simon Goldschmidt
1320 * tcpip.h, tcpip.c: fixed tcpip_untimeout (does not need the time, broken after
1321 1.3.0 in CVS only) - fixes compilation of ppp_oe.c
1323 2009-05-02 Simon Goldschmidt
1324 * msg_in.c: fixed bug #25636: SNMPSET value is ignored for integer fields
1326 2009-05-01 Simon Goldschmidt
1327 * pap.c: bug #21680: PPP upap_rauthnak() drops legal NAK packets
1329 2009-05-01 Simon Goldschmidt
1330 * ppp.c: bug #24228: Memory corruption with PPP and DHCP
1332 2009-04-29 Frédéric Bernon
1333 * raw.c, udp.c, init.c, opt.h, ip.h, sockets.h: bug #26309: Implement the
1334 SO(F)_BROADCAST filter for all API layers. Avoid the unindented reception
1335 of broadcast packets even when this option wasn't set. Port maintainers
1336 which want to enable this filter have to set IP_SOF_BROADCAST=1 in opt.h.
1337 If you want this option also filter broadcast on recv operations, you also
1338 have to set IP_SOF_BROADCAST_RECV=1 in opt.h.
1340 2009-04-28 Simon Goldschmidt, Jakob Stoklund Olesen
1341 * dhcp.c: patch #6721, bugs #25575, #25576: Some small fixes to DHCP and
1342 DHCP/AUTOIP cooperation
1344 2009-04-25 Simon Goldschmidt, Oleg Tyshev
1345 * tcp_out.c: bug #24212: Deadlocked tcp_retransmit due to exceeded pcb->cwnd
1346 Fixed by sorting the unsent and unacked queues (segments are inserted at the
1347 right place in tcp_output and tcp_rexmit).
1349 2009-04-25 Simon Goldschmidt
1350 * memp.c, mem.c, memp.h, mem_std.h: bug #26213 "Problem with memory allocation
1351 when debugging": memp_sizes contained the wrong sizes (including sanity
1352 regions); memp pools for MEM_USE_POOLS were too small
1354 2009-04-24 Simon Goldschmidt, Frédéric Bernon
1355 * inet.c: patch #6765: Fix a small problem with the last changes (incorrect
1356 behavior, with with ip address string not ended by a '\0', a space or a
1359 2009-04-19 Simon Goldschmidt
1360 * rawapi.txt: Fixed bug #26069: Corrected documentation: if tcp_connect fails,
1361 pcb->err is called, not pcb->connected (with an error code).
1363 2009-04-19 Simon Goldschmidt
1364 * tcp_out.c: Fixed bug #26236: "TCP options (timestamp) don't work with
1365 no-copy-tcpwrite": deallocate option data, only concat segments with same flags
1367 2009-04-19 Simon Goldschmidt
1368 * tcp_out.c: Fixed bug #25094: "Zero-length pbuf" (options are now allocated
1369 in the header pbuf, not the data pbuf)
1371 2009-04-18 Simon Goldschmidt
1372 * api_msg.c: fixed bug #25695: Segmentation fault in do_writemore()
1374 2009-04-15 Simon Goldschmidt
1375 * sockets.c: tried to fix bug #23559: lwip_recvfrom problem with tcp
1377 2009-04-15 Simon Goldschmidt
1378 * dhcp.c: task #9192: mem_free of dhcp->options_in and dhcp->msg_in
1380 2009-04-15 Simon Goldschmidt
1381 * ip.c, ip6.c, tcp_out.c, ip.h: patch #6808: Add a utility function
1382 ip_hinted_output() (for smaller code mainly)
1384 2009-04-15 Simon Goldschmidt
1385 * inet.c: patch #6765: Supporting new line characters in inet_aton()
1387 2009-04-15 Simon Goldschmidt
1388 * dhcp.c: patch #6764: DHCP rebind and renew did not send hostnam option;
1389 Converted constant OPTION_MAX_MSG_SIZE to netif->mtu, check if netif->mtu
1390 is big enough in dhcp_start
1392 2009-04-15 Simon Goldschmidt
1393 * netbuf.c: bug #26027: netbuf_chain resulted in pbuf memory leak
1395 2009-04-15 Simon Goldschmidt
1396 * sockets.c, ppp.c: bug #25763: corrected 4 occurrences of SMEMCPY to MEMCPY
1398 2009-04-15 Simon Goldschmidt
1399 * sockets.c: bug #26121: set_errno can be overridden
1401 2009-04-09 Kieran Mansley (patch from Luca Ceresoli <lucaceresoli>)
1402 * init.c, opt.h: Patch#6774 TCP_QUEUE_OOSEQ breaks compilation when
1405 2009-04-09 Kieran Mansley (patch from Roy Lee <roylee17>)
1406 * tcp.h: Patch#6802 Add do-while-clauses to those function like
1409 2009-03-31 Kieran Mansley
1410 * tcp.c, tcp_in.c, tcp_out.c, tcp.h, opt.h: Rework the way window
1411 updates are calculated and sent (BUG20515)
1413 * tcp_in.c: cope with SYN packets received during established states,
1414 and retransmission of initial SYN.
1416 * tcp_out.c: set push bit correctly when tcp segments are merged
1418 2009-03-27 Kieran Mansley
1419 * tcp_out.c set window correctly on probes (correcting change made
1422 2009-03-26 Kieran Mansley
1423 * tcp.c, tcp_in.c, tcp.h: add tcp_abandon() to cope with dropping
1424 connections where no reset required (bug #25622)
1426 * tcp_out.c: set TCP_ACK flag on keepalive and zero window probes
1429 2009-02-18 Simon Goldschmidt (Jonathan Larmour and Bill Auerbach)
1430 * ip_frag.c: patch #6528: the buffer used for IP_FRAG_USES_STATIC_BUF could be
1431 too small depending on MEM_ALIGNMENT
1433 2009-02-16 Simon Goldschmidt
1434 * sockets.h/.c, api_*.h/.c: fixed arguments of socket functions to match the standard;
1435 converted size argument of netconn_write to 'size_t'
1437 2009-02-16 Simon Goldschmidt
1438 * tcp.h, tcp.c: fixed bug #24440: TCP connection close problem on 64-bit host
1439 by moving accept callback function pointer to TCP_PCB_COMMON
1441 2009-02-12 Simon Goldschmidt
1442 * dhcp.c: fixed bug #25345 (DHCPDECLINE is sent with "Maximum message size"
1445 2009-02-11 Simon Goldschmidt
1446 * dhcp.c: fixed bug #24480 (releasing old udp_pdb and pbuf in dhcp_start)
1448 2009-02-11 Simon Goldschmidt
1449 * opt.h, api_msg.c: added configurable default valud for netconn->recv_bufsize:
1450 RECV_BUFSIZE_DEFAULT (fixes bug #23726: pbuf pool exhaustion on slow recv())
1452 2009-02-10 Simon Goldschmidt
1453 * tcp.c: fixed bug #25467: Listen backlog is not reset on timeout in SYN_RCVD:
1454 Accepts_pending is decrease on a corresponding listen pcb when a connection
1455 in state SYN_RCVD is close.
1457 2009-01-28 Jonathan Larmour
1458 * pbuf.c: reclaim pbufs from TCP out-of-sequence segments if we run
1461 2008-12-19 Simon Goldschmidt
1462 * many files: patch #6699: fixed some warnings on platform where sizeof(int) == 2
1464 2008-12-10 Tamas Somogyi, Frédéric Bernon
1465 * sockets.c: fixed bug #25051: lwip_recvfrom problem with udp: fromaddr and
1466 port uses deleted netbuf.
1468 2008-10-18 Simon Goldschmidt
1469 * tcp_in.c: fixed bug ##24596: Vulnerability on faulty TCP options length
1472 2008-10-15 Simon Goldschmidt
1473 * ip_frag.c: fixed bug #24517: IP reassembly crashes on unaligned IP headers
1474 by packing the struct ip_reass_helper.
1476 2008-10-03 David Woodhouse, Jonathan Larmour
1477 * etharp.c (etharp_arp_input): Fix type aliasing problem copying ip address.
1479 2008-10-02 Jonathan Larmour
1480 * dns.c: Hard-code structure sizes, to avoid issues on some compilers where
1481 padding is included.
1483 2008-09-30 Jonathan Larmour
1484 * sockets.c (lwip_accept): check addr isn't NULL. If it's valid, do an
1485 assertion check that addrlen isn't NULL.
1487 2008-09-30 Jonathan Larmour
1488 * tcp.c: Fix bug #24227, wrong error message in tcp_bind.
1490 2008-08-26 Simon Goldschmidt
1491 * inet.h, ip_addr.h: fixed bug #24132: Cross-dependency between ip_addr.h and
1492 inet.h -> moved declaration of struct in_addr from ip_addr.h to inet.h
1494 2008-08-14 Simon Goldschmidt
1495 * api_msg.c: fixed bug #23847: do_close_internal references freed memory (when
1496 tcp_close returns != ERR_OK)
1498 2008-07-08 Frédéric Bernon
1499 * stats.h: Fix some build bugs introduced with patch #6483 (missing some parameters
1500 in macros, mainly if MEM_STATS=0 and MEMP_STATS=0).
1502 2008-06-24 Jonathan Larmour
1503 * tcp_in.c: Fix for bug #23693 as suggested by Art R. Ensure cseg is unused
1504 if tcp_seg_copy fails.
1506 2008-06-17 Simon Goldschmidt
1507 * inet_chksum.c: Checked in some ideas of patch #6460 (loop optimizations)
1508 and created defines for swapping bytes and folding u32 to u16.
1510 2008-05-30 Kieran Mansley
1511 * tcp_in.c Remove redundant "if" statement, and use real rcv_wnd
1512 rather than rcv_ann_wnd when deciding if packets are in-window.
1513 Contributed by <arasmussen@consultant.datasys.swri.edu>
1515 2008-05-30 Kieran Mansley
1516 * mem.h: Fix BUG#23254. Change macro definition of mem_* to allow
1517 passing as function pointers when MEM_LIBC_MALLOC is defined.
1519 2008-05-09 Jonathan Larmour
1520 * err.h, err.c, sockets.c: Fix bug #23119: Reorder timeout error code to
1521 stop it being treated as a fatal error.
1523 2008-04-15 Simon Goldschmidt
1524 * dhcp.c: fixed bug #22804: dhcp_stop doesn't clear NETIF_FLAG_DHCP
1527 2008-03-27 Simon Goldschmidt
1528 * mem.c, tcpip.c, tcpip.h, opt.h: fixed bug #21433 (Calling mem_free/pbuf_free
1529 from interrupt context isn't safe): set LWIP_USE_HEAP_FROM_INTERRUPT to 1
1530 in lwipopts.h or use pbuf_free_callback(p)/mem_free_callback(m) to free pbufs
1531 or heap memory from interrupt context
1533 2008-03-26 Simon Goldschmidt
1534 * tcp_in.c, tcp.c: fixed bug #22249: division by zero could occur if a remote
1535 host sent a zero mss as TCP option.
1542 2008-03-10 Jonathan Larmour
1543 * inet_chksum.c: Allow choice of one of the sample algorithms to be
1544 made from lwipopts.h. Fix comment on how to override LWIP_CHKSUM.
1546 2008-01-22 Frédéric Bernon
1547 * tcp.c, tcp_in.c, tcp.h, opt.h: Rename LWIP_CALCULATE_EFF_SEND_MSS in
1548 TCP_CALCULATE_EFF_SEND_MSS to have coherent TCP options names.
1550 2008-01-14 Frédéric Bernon
1551 * rawapi.txt, api_msg.c, tcp.c, tcp_in.c, tcp.h: changes for task #7675 "Enable
1552 to refuse data on a TCP_EVENT_RECV call". Important, behavior changes for the
1553 tcp_recv callback (see rawapi.txt).
1555 2008-01-14 Frédéric Bernon, Marc Chaland
1556 * ip.c: Integrate patch #6369" ip_input : checking before realloc".
1558 2008-01-12 Frédéric Bernon
1559 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
1560 netconn::sem per netconn::op_completed like suggested for the task #7490
1561 "Add return value to sys_mbox_post".
1563 2008-01-12 Frédéric Bernon
1564 * api_msg.c, opt.h: replace DEFAULT_RECVMBOX_SIZE per DEFAULT_TCP_RECVMBOX_SIZE,
1565 DEFAULT_UDP_RECVMBOX_SIZE and DEFAULT_RAW_RECVMBOX_SIZE (to optimize queues
1566 sizes), like suggested for the task #7490 "Add return value to sys_mbox_post".
1568 2008-01-10 Frédéric Bernon
1569 * tcpip.h, tcpip.c: add tcpip_callback_with_block function for the task #7490
1570 "Add return value to sys_mbox_post". tcpip_callback is always defined as
1571 "blocking" ("block" parameter = 1).
1573 2008-01-10 Frédéric Bernon
1574 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
1575 netconn::mbox (sys_mbox_t) per netconn::sem (sys_sem_t) for the task #7490
1576 "Add return value to sys_mbox_post".
1578 2008-01-05 Frédéric Bernon
1579 * sys_arch.txt, api.h, api_lib.c, api_msg.h, api_msg.c, tcpip.c, sys.h, opt.h:
1580 Introduce changes for task #7490 "Add return value to sys_mbox_post" with some
1581 modifications in the sys_mbox api: sys_mbox_new take a "size" parameters which
1582 indicate the number of pointers query by the mailbox. There is three defines
1583 in opt.h to indicate sizes for tcpip::mbox, netconn::recvmbox, and for the
1584 netconn::acceptmbox. Port maintainers, you can decide to just add this new
1585 parameter in your implementation, but to ignore it to keep the previous behavior.
1586 The new sys_mbox_trypost function return a value to know if the mailbox is
1587 full or if the message is posted. Take a look to sys_arch.txt for more details.
1588 This new function is used in tcpip_input (so, can be called in an interrupt
1589 context since the function is not blocking), and in recv_udp and recv_raw.
1591 2008-01-04 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
1592 * rawapi.txt, api.h, api_lib.c, api_msg.h, api_msg.c, sockets.c, tcp.h, tcp.c,
1593 tcp_in.c, init.c, opt.h: rename backlog options with TCP_ prefix, limit the
1594 "backlog" parameter in an u8_t, 0 is interpreted as "smallest queue", add
1595 documentation in the rawapi.txt file.
1597 2007-12-31 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
1598 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Add TCP persist timer
1600 2007-12-31 Frédéric Bernon, Luca Ceresoli
1601 * autoip.c, etharp.c: ip_addr.h: Integrate patch #6348: "Broadcast ARP packets
1602 in autoip". The change in etharp_raw could be removed, since all calls to
1603 etharp_raw use ethbroadcast for the "ethdst_addr" parameter. But it could be
1604 wrong in the future.
1606 2007-12-30 Frédéric Bernon, Tom Evans
1607 * ip.c: Fix bug #21846 "LwIP doesn't appear to perform any IP Source Address
1608 Filtering" reported by Tom Evans.
1610 2007-12-21 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
1611 * tcp.h, opt.h, api.h, api_msg.h, tcp.c, tcp_in.c, api_lib.c, api_msg.c,
1612 sockets.c, init.c: task #7252: Implement TCP listen backlog: Warning: raw API
1613 applications have to call 'tcp_accepted(pcb)' in their accept callback to
1614 keep accepting new connections.
1616 2007-12-13 Frédéric Bernon
1617 * api_msg.c, err.h, err.c, sockets.c, dns.c, dns.h: replace "enum dns_result"
1618 by err_t type. Add a new err_t code "ERR_INPROGRESS".
1620 2007-12-12 Frédéric Bernon
1621 * dns.h, dns.c, opt.h: move DNS options to the "right" place. Most visibles
1622 are the one which have ram usage.
1624 2007-12-05 Frédéric Bernon
1625 * netdb.c: add a LWIP_DNS_API_HOSTENT_STORAGE option to decide to use a static
1626 set of variables (=0) or a local one (=1). In this last case, your port should
1627 provide a function "struct hostent* sys_thread_hostent( struct hostent* h)"
1628 which have to do a copy of "h" and return a pointer ont the "per-thread" copy.
1630 2007-12-03 Simon Goldschmidt
1631 * ip.c: ip_input: check if a packet is for inp first before checking all other
1632 netifs on netif_list (speeds up packet receiving in most cases)
1634 2007-11-30 Simon Goldschmidt
1635 * udp.c, raw.c: task #7497: Sort lists (pcb, netif, ...) for faster access
1636 UDP: move a (connected) pcb selected for input to the front of the list of
1637 pcbs so that it is found faster next time. Same for RAW pcbs that have eaten
1640 2007-11-28 Simon Goldschmidt
1641 * etharp.c, stats.c, stats.h, opt.h: Introduced ETHARP_STATS
1643 2007-11-25 Simon Goldschmidt
1644 * dhcp.c: dhcp_unfold_reply() uses pbuf_copy_partial instead of its own copy
1647 2007-11-24 Simon Goldschmidt
1648 * netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c
1649 to the new file netdb.c; included lwip_getaddrinfo.
1651 2007-11-21 Simon Goldschmidt
1652 * tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
1653 based on the MTU of the netif used to send. Enabled by default. Disable by
1654 setting LWIP_CALCULATE_EFF_SEND_MSS to 0. This fixes bug #21492.
1656 2007-11-19 Frédéric Bernon
1657 * api_msg.c, dns.h, dns.c: Implement DNS_DOES_NAME_CHECK option (check if name
1658 received match the name query), implement DNS_USES_STATIC_BUF (the place where
1659 copy dns payload to parse the response), return an error if there is no place
1660 for a new query, and fix some minor problems.
1662 2007-11-16 Simon Goldschmidt
1663 * new files: ipv4/inet.c, ipv4/inet_chksum.c, ipv6/inet6.c
1664 removed files: core/inet.c, core/inet6.c
1665 Moved inet files into ipv4/ipv6 directory; splitted inet.c/inet.h into
1666 inet and chksum part; changed includes in all lwIP files as appropriate
1668 2007-11-16 Simon Goldschmidt
1669 * api.h, api_msg.h, api_lib.c, api_msg.c, socket.h, socket.c: Added sequential
1670 dns resolver function for netconn api (netconn_gethostbyname) and socket api
1671 (gethostbyname/gethostbyname_r).
1673 2007-11-15 Jim Pettinato, Frédéric Bernon
1674 * opt.h, init.c, tcpip.c, dhcp.c, dns.h, dns.c: add DNS client for simple name
1675 requests with RAW api interface. Initialization is done in lwip_init() with
1676 build time options. DNS timer is added in tcpip_thread context. DHCP can set
1677 DNS server ip addresses when options are received. You need to set LWIP_DNS=1
1678 in your lwipopts.h file (LWIP_DNS=0 in opt.h). DNS_DEBUG can be set to get
1679 some traces with LWIP_DEBUGF. Sanity check have been added. There is a "todo"
1680 list with points to improve.
1682 2007-11-06 Simon Goldschmidt
1683 * opt.h, mib2.c: Patch #6215: added ifAdminStatus write support (if explicitly
1684 enabled by defining SNMP_SAFE_REQUESTS to 0); added code to check link status
1685 for ifOperStatus if LWIP_NETIF_LINK_CALLBACK is defined.
1687 2007-11-06 Simon Goldschmidt
1688 * api.h, api_msg.h and dependent files: Task #7410: Removed the need to include
1689 core header files in api.h (ip/tcp/udp/raw.h) to hide the internal
1690 implementation from netconn api applications.
1692 2007-11-03 Frédéric Bernon
1693 * api.h, api_lib.c, api_msg.c, sockets.c, opt.h: add SO_RCVBUF option for UDP &
1694 RAW netconn. You need to set LWIP_SO_RCVBUF=1 in your lwipopts.h (it's disabled
1695 by default). Netconn API users can use the netconn_recv_bufsize macro to access
1696 it. This is a first release which have to be improve for TCP. Note it used the
1697 netconn::recv_avail which need to be more "thread-safe" (note there is already
1698 the problem for FIONREAD with lwip_ioctl/ioctlsocket).
1700 2007-11-01 Frédéric Bernon, Marc Chaland
1701 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, tcp.h, tcp_out.c:
1702 Integrate "patch #6250 : MSG_MORE flag for send". MSG_MORE is used at socket api
1703 layer, NETCONN_MORE at netconn api layer, and TCP_WRITE_FLAG_MORE at raw api
1704 layer. This option enable to delayed TCP PUSH flag on multiple "write" calls.
1705 Note that previous "copy" parameter for "write" APIs is now called "apiflags".
1707 2007-10-24 Frédéric Bernon
1708 * api.h, api_lib.c, api_msg.c: Add macro API_EVENT in the same spirit than
1709 TCP_EVENT_xxx macros to get a code more readable. It could also help to remove
1710 some code (like we have talk in "patch #5919 : Create compile switch to remove
1711 select code"), but it could be done later.
1713 2007-10-08 Simon Goldschmidt
1714 * many files: Changed initialization: many init functions are not needed any
1715 more since we now rely on the compiler initializing global and static
1718 2007-10-06 Simon Goldschmidt
1719 * ip_frag.c, memp.c, mib2.c, ip_frag.h, memp_std.h, opt.h: Changed IP_REASSEMBLY
1720 to enqueue the received pbufs so that multiple packets can be reassembled
1721 simultaneously and no static reassembly buffer is needed.
1723 2007-10-05 Simon Goldschmidt
1724 * tcpip.c, etharp.h, etharp.c: moved ethernet_input from tcpip.c to etharp.c so
1725 all netifs (or ports) can use it.
1727 2007-10-05 Frédéric Bernon
1728 * netifapi.h, netifapi.c: add function netifapi_netif_set_default. Change the
1729 common function to reduce a little bit the footprint (for all functions using
1730 only the "netif" parameter).
1732 2007-10-03 Frédéric Bernon
1733 * netifapi.h, netifapi.c: add functions netifapi_netif_set_up, netifapi_netif_set_down,
1734 netifapi_autoip_start and netifapi_autoip_stop. Use a common function to reduce
1735 a little bit the footprint (for all functions using only the "netif" parameter).
1737 2007-09-15 Frédéric Bernon
1738 * udp.h, udp.c, sockets.c: Changes for "#20503 IGMP Improvement". Add IP_MULTICAST_IF
1739 option in socket API, and a new field "multicast_ip" in "struct udp_pcb" (for
1740 netconn and raw API users), only if LWIP_IGMP=1. Add getsockopt processing for
1741 IP_MULTICAST_TTL and IP_MULTICAST_IF.
1743 2007-09-10 Frédéric Bernon
1744 * snmp.h, mib2.c: enable to remove SNMP timer (which consumne several cycles
1745 even when it's not necessary). snmp_agent.txt tell to call snmp_inc_sysuptime()
1746 each 10ms (but, it's intrusive if you use sys_timeout feature). Now, you can
1747 decide to call snmp_add_sysuptime(100) each 1000ms (which is bigger "step", but
1748 call to a lower frequency). Or, you can decide to not call snmp_inc_sysuptime()
1749 or snmp_add_sysuptime(), and to define the SNMP_GET_SYSUPTIME(sysuptime) macro.
1750 This one is undefined by default in mib2.c. SNMP_GET_SYSUPTIME is called inside
1751 snmp_get_sysuptime(u32_t *value), and enable to change "sysuptime" value only
1752 when it's queried (any direct call to "sysuptime" is changed by a call to
1753 snmp_get_sysuptime).
1755 2007-09-09 Frédéric Bernon, Bill Florac
1756 * igmp.h, igmp.c, netif.h, netif.c, ip.c: To enable to have interfaces with IGMP,
1757 and others without it, there is a new NETIF_FLAG_IGMP flag to set in netif->flags
1758 if you want IGMP on an interface. igmp_stop() is now called inside netif_remove().
1759 igmp_report_groups() is now called inside netif_set_link_up() (need to have
1760 LWIP_NETIF_LINK_CALLBACK=1) to resend reports once the link is up (avoid to wait
1761 the next query message to receive the matching multicast streams).
1763 2007-09-08 Frédéric Bernon
1764 * sockets.c, ip.h, api.h, tcp.h: declare a "struct ip_pcb" which only contains
1765 IP_PCB. Add in the netconn's "pcb" union a "struct ip_pcb *ip;" (no size change).
1766 Use this new field to access to common pcb fields (ttl, tos, so_options, etc...).
1767 Enable to access to these fields with LWIP_TCP=0.
1769 2007-09-05 Frédéric Bernon
1770 * udp.c, ipv4/icmp.c, ipv4/ip.c, ipv6/icmp.c, ipv6/ip6.c, ipv4/icmp.h,
1771 ipv6/icmp.h, opt.h: Integrate "task #7272 : LWIP_ICMP option". The new option
1772 LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default).
1773 Be careful, disabling ICMP make your product non-compliant to RFC1122, but
1774 help to reduce footprint, and to reduce "visibility" on the Internet.
1776 2007-09-05 Frédéric Bernon, Bill Florac
1777 * opt.h, sys.h, tcpip.c, slipif.c, ppp.c, sys_arch.txt: Change parameters list
1778 for sys_thread_new (see "task #7252 : Create sys_thread_new_ex()"). Two new
1779 parameters have to be provided: a task name, and a task stack size. For this
1780 one, since it's platform dependant, you could define the best one for you in
1781 your lwipopts.h. For port maintainers, you can just add these new parameters
1782 in your sys_arch.c file, and but it's not mandatory, use them in your OS
1785 2007-09-05 Frédéric Bernon
1786 * inet.c, autoip.c, msg_in.c, msg_out.c, init.c: Move some build time checkings
1787 inside init.c for task #7142 "Sanity check user-configurable values".
1789 2007-09-04 Frédéric Bernon, Bill Florac
1790 * igmp.h, igmp.c, memp_std.h, memp.c, init.c, opt.h: Replace mem_malloc call by
1791 memp_malloc, and use a new MEMP_NUM_IGMP_GROUP option (see opt.h to define the
1792 value). It will avoid potential fragmentation problems, use a counter to know
1793 how many times a group is used on an netif, and free it when all applications
1794 leave it. MEMP_NUM_IGMP_GROUP got 8 as default value (and init.c got a sanity
1795 check if LWIP_IGMP!=0).
1797 2007-09-03 Frédéric Bernon
1798 * igmp.h, igmp.c, sockets.c, api_msg.c: Changes for "#20503 IGMP Improvement".
1799 Initialize igmp_mac_filter to NULL in netif_add (this field should be set in
1800 the netif's "init" function). Use the "imr_interface" field (for socket layer)
1801 and/or the "interface" field (for netconn layer), for join/leave operations.
1802 The igmp_join/leavegroup first parameter change from a netif to an ipaddr.
1803 This field could be a netif's ipaddr, or "any" (same meaning than ip_addr_isany).
1805 2007-08-30 Frédéric Bernon
1806 * Add netbuf.h, netbuf.c, Change api.h, api_lib.c: #7249 "Split netbuf functions
1807 from api/api_lib". Now netbuf API is independant of netconn, and can be used
1808 with other API (application based on raw API, or future "socket2" API). Ports
1809 maintainers just have to add src/api/netbuf.c in their makefile/projects.
1811 2007-08-30 Frédéric Bernon, Jonathan Larmour
1812 * init.c: Add first version of lwip_sanity_check for task #7142 "Sanity check
1813 user-configurable values".
1815 2007-08-29 Frédéric Bernon
1816 * igmp.h, igmp.c, tcpip.c, init.c, netif.c: change igmp_init and add igmp_start.
1817 igmp_start is call inside netif_add. Now, igmp initialization is in the same
1818 spirit than the others modules. Modify some IGMP debug traces.
1820 2007-08-29 Frédéric Bernon
1821 * Add init.h, init.c, Change opt.h, tcpip.c: Task #7213 "Add a lwip_init function"
1822 Add lwip_init function to regroup all modules initializations, and to provide
1823 a place to add code for task #7142 "Sanity check user-configurable values".
1824 Ports maintainers should remove direct initializations calls from their code,
1825 and add init.c in their makefiles. Note that lwip_init() function is called
1826 inside tcpip_init, but can also be used by raw api users since all calls are
1827 disabled when matching options are disabled. Also note that their is new options
1828 in opt.h, you should configure in your lwipopts.h (they are enabled per default).
1830 2007-08-26 Marc Boucher
1831 * api_msg.c: do_close_internal(): Reset the callbacks and arg (conn) to NULL
1832 since they can under certain circumstances be called with an invalid conn
1833 pointer after the connection has been closed (and conn has been freed).
1835 2007-08-25 Frédéric Bernon (Artem Migaev's Patch)
1836 * netif.h, netif.c: Integrate "patch #6163 : Function to check if link layer is up".
1837 Add a netif_is_link_up() function if LWIP_NETIF_LINK_CALLBACK option is set.
1839 2007-08-22 Frédéric Bernon
1840 * netif.h, netif.c, opt.h: Rename LWIP_NETIF_CALLBACK in LWIP_NETIF_STATUS_CALLBACK
1841 to be coherent with new LWIP_NETIF_LINK_CALLBACK option before next release.
1843 2007-08-22 Frédéric Bernon
1844 * tcpip.h, tcpip.c, ethernetif.c, opt.h: remove options ETHARP_TCPIP_INPUT &
1845 ETHARP_TCPIP_ETHINPUT, now, only "ethinput" code is supported, even if the
1846 name is tcpip_input (we keep the name of 1.2.0 function).
1848 2007-08-17 Jared Grubb
1849 * memp_std.h, memp.h, memp.c, mem.c, stats.c: (Task #7136) Centralize mempool
1850 settings into new memp_std.h and optional user file lwippools.h. This adds
1851 more dynamic mempools, and allows the user to create an arbitrary number of
1852 mempools for mem_malloc.
1854 2007-08-16 Marc Boucher
1855 * api_msg.c: Initialize newconn->state to NETCONN_NONE in accept_function;
1856 otherwise it was left to NETCONN_CLOSE and sent_tcp() could prematurely
1857 close the connection.
1859 2007-08-16 Marc Boucher
1860 * sockets.c: lwip_accept(): check netconn_peer() error return.
1862 2007-08-16 Marc Boucher
1863 * mem.c, mem.h: Added mem_calloc().
1865 2007-08-16 Marc Boucher
1866 * tcpip.c, tcpip.h memp.c, memp.h: Added distinct memp (MEMP_TCPIP_MSG_INPKT)
1867 for input packets to prevent floods from consuming all of MEMP_TCPIP_MSG
1868 and starving other message types.
1869 Renamed MEMP_TCPIP_MSG to MEMP_TCPIP_MSG_API
1871 2007-08-16 Marc Boucher
1872 * pbuf.c, pbuf.h, etharp.c, tcp_in.c, sockets.c: Split pbuf flags in pbuf
1873 type and flgs (later renamed to flags).
1874 Use enum pbuf_flag as pbuf_type. Renumber PBUF_FLAG_*.
1875 Improved lwip_recvfrom(). TCP push now propagated.
1877 2007-08-16 Marc Boucher
1878 * ethernetif.c, contrib/ports/various: ethbroadcast now a shared global
1881 2007-08-16 Marc Boucher
1882 * ppp_oe.c ppp_oe.h, auth.c chap.c fsm.c lcp.c ppp.c ppp.h,
1883 etharp.c ethernetif.c, etharp.h, opt.h tcpip.h, tcpip.c:
1884 Added PPPoE support and various PPP improvements.
1886 2007-07-25 Simon Goldschmidt
1887 * api_lib.c, ip_frag.c, pbuf.c, api.h, pbuf.h: Introduced pbuf_copy_partial,
1888 making netbuf_copy_partial use this function.
1890 2007-07-25 Simon Goldschmidt
1891 * tcp_in.c: Fix bug #20506: Slow start / initial congestion window starts with
1892 2 * mss (instead of 1 * mss previously) to comply with some newer RFCs and
1895 2007-07-13 Jared Grubb (integrated by Frédéric Bernon)
1896 * opt.h, netif.h, netif.c, ethernetif.c: Add new configuration option to add
1897 a link callback in the netif struct, and functions to handle it. Be carefull
1898 for port maintainers to add the NETIF_FLAG_LINK_UP flag (like in ethernetif.c)
1899 if you want to be sure to be compatible with future changes...
1901 2007-06-30 Frédéric Bernon
1902 * sockets.h, sockets.c: Implement MSG_PEEK flag for recv/recvfrom functions.
1904 2007-06-21 Simon Goldschmidt
1905 * etharp.h, etharp.c: Combined etharp_request with etharp_raw for both
1906 LWIP_AUTOIP =0 and =1 to remove redundant code.
1908 2007-06-21 Simon Goldschmidt
1909 * mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option
1910 MEM_USE_POOLS to use 4 pools with different sized elements instead of a
1911 heap. This both prevents memory fragmentation and gives a higher speed
1912 at the cost of more memory consumption. Turned off by default.
1914 2007-06-21 Simon Goldschmidt
1915 * api_lib.c, api_msg.c, api.h, api_msg.h: Converted the length argument of
1916 netconn_write (and therefore also api_msg_msg.msg.w.len) from u16_t into
1917 int to be able to send a bigger buffer than 64K with one time (mainly
1918 used from lwip_send).
1920 2007-06-21 Simon Goldschmidt
1921 * tcp.h, api_msg.c: Moved the nagle algorithm from netconn_write/do_write
1922 into a define (tcp_output_nagle) in tcp.h to provide it to raw api users, too.
1924 2007-06-21 Simon Goldschmidt
1925 * api.h, api_lib.c, api_msg.c: Fixed bug #20021: Moved sendbuf-processing in
1926 netconn_write from api_lib.c to api_msg.c to also prevent multiple context-
1927 changes on low memory or empty send-buffer.
1929 2007-06-18 Simon Goldschmidt
1930 * etharp.c, etharp.h: Changed etharp to use a defined hardware address length
1931 of 6 to avoid loading netif->hwaddr_len every time (since this file is only
1932 used for ethernet and struct eth_addr already had a defined length of 6).
1934 2007-06-17 Simon Goldschmidt
1935 * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets
1936 to disable UDP checksum generation on transmit.
1938 2007-06-13 Frédéric Bernon, Simon Goldschmidt
1939 * debug.h, api_msg.c: change LWIP_ERROR to use it to check errors like invalid
1940 pointers or parameters, and let the possibility to redefined it in cc.h. Use
1941 this macro to check "conn" parameter in api_msg.c functions.
1943 2007-06-11 Simon Goldschmidt
1944 * sockets.c, sockets.h: Added UDP lite support for sockets
1946 2007-06-10 Simon Goldschmidt
1947 * udp.h, opt.h, api_msg.c, ip.c, udp.c: Included switch LWIP_UDPLITE (enabled
1948 by default) to switch off UDP-Lite support if not needed (reduces udp.c code
1951 2007-06-09 Dominik Spies (integrated by Frédéric Bernon)
1952 * autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h:
1953 AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and
1954 LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt
1955 (see TODO mark in the source code).
1957 2007-06-09 Simon Goldschmidt
1958 * etharp.h, etharp.c, ethernetif.c: Modified order of parameters for
1959 etharp_output() to match netif->output so etharp_output() can be used
1960 directly as netif->output to save one function call.
1962 2007-06-08 Simon Goldschmidt
1963 * netif.h, ethernetif.c, slipif.c, loopif.c: Added define
1964 NETIF_INIT_SNMP(netif, type, speed) to initialize per-netif snmp variables,
1965 added initialization of those to ethernetif, slipif and loopif.
1967 2007-05-18 Simon Goldschmidt
1968 * opt.h, ip_frag.c, ip_frag.h, ip.c: Added option IP_FRAG_USES_STATIC_BUF
1969 (defaulting to off for now) that can be set to 0 to send fragmented
1970 packets by passing PBUF_REFs down the stack.
1972 2007-05-23 Frédéric Bernon
1973 * api_lib.c: Implement SO_RCVTIMEO for accept and recv on TCP
1974 connections, such present in patch #5959.
1976 2007-05-23 Frédéric Bernon
1977 * api.h, api_lib.c, api_msg.c, sockets.c: group the different NETCONN_UDPxxx
1978 code in only one part...
1980 2007-05-18 Simon Goldschmidt
1981 * opt.h, memp.h, memp.c: Added option MEMP_OVERFLOW_CHECK to check for memp
1982 elements to overflow. This is achieved by adding some bytes before and after
1983 each pool element (increasing their size, of course), filling them with a
1984 prominent value and checking them on freeing the element.
1985 Set it to 2 to also check every element in every pool each time memp_malloc()
1986 or memp_free() is called (slower but more helpful).
1988 2007-05-10 Simon Goldschmidt
1989 * opt.h, memp.h, memp.c, pbuf.c (see task #6831): use a new memp pool for
1990 PBUF_POOL pbufs instead of the old pool implementation in pbuf.c to reduce
1993 2007-05-11 Frédéric Bernon
1994 * sockets.c, api_lib.c, api_msg.h, api_msg.c, netifapi.h, netifapi.c, tcpip.c:
1995 Include a function pointer instead of a table index in the message to reduce
1996 footprint. Disable some part of lwip_send and lwip_sendto if some options are
1997 not set (LWIP_TCP, LWIP_UDP, LWIP_RAW).
1999 2007-05-10 Simon Goldschmidt
2000 * *.h (except netif/ppp/*.h): Included patch #5448: include '#ifdef __cplusplus
2001 \ extern "C" {' in all header files. Now you can write your application using
2002 the lwIP stack in C++ and simply #include the core files. Note I have left
2003 out the netif/ppp/*h header files for now, since I don't know which files are
2004 included by applications and which are for internal use only.
2006 2007-05-09 Simon Goldschmidt
2007 * opt.h, *.c/*.h: Included patch #5920: Create define to override C-library
2008 memcpy. 2 Defines are created: MEMCPY() for normal memcpy, SMEMCPY() for
2009 situations where some compilers might inline the copy and save a function
2010 call. Also replaced all calls to memcpy() with calls to (S)MEMCPY().
2012 2007-05-08 Simon Goldschmidt
2013 * mem.h: If MEM_LIBC_MALLOC==1, allow the defines (e.g. mem_malloc() -> malloc())
2014 to be overriden in case the C-library malloc implementation is not protected
2015 against concurrent access.
2017 2007-05-04 Simon Goldschmidt (Atte Kojo)
2018 * etharp.c: Introduced fast one-entry-cache to speed up ARP lookup when sending
2019 multiple packets to the same host.
2021 2007-05-04 Frédéric Bernon, Jonathan Larmour
2022 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fix bug #19162 "lwip_sento: a possible
2023 to corrupt remote addr/port connection state". Reduce problems "not enought memory" with
2024 netbuf (if we receive lot of datagrams). Improve lwip_sendto (only one exchange between
2025 sockets api and api_msg which run in tcpip_thread context). Add netconn_sento function.
2026 Warning, if you directly access to "fromaddr" & "fromport" field from netbuf struct,
2027 these fields are now renamed "addr" & "port".
2029 2007-04-11 Jonathan Larmour
2030 * sys.h, api_lib.c: Provide new sys_mbox_tryfetch function. Require ports to provide new
2031 sys_arch_mbox_tryfetch function to get a message if one is there, otherwise return
2032 with SYS_MBOX_EMPTY. sys_arch_mbox_tryfetch can be implemented as a function-like macro
2033 by the port in sys_arch.h if desired.
2035 2007-04-06 Frédéric Bernon, Simon Goldschmidt
2036 * opt.h, tcpip.h, tcpip.c, netifapi.h, netifapi.c: New configuration option LWIP_NETIF_API
2037 allow to use thread-safe functions to add/remove netif in list, and to start/stop dhcp
2038 clients, using new functions from netifapi.h. Disable as default (no port change to do).
2040 2007-04-05 Frédéric Bernon
2041 * sockets.c: remplace ENOBUFS errors on alloc_socket by ENFILE to be more BSD compliant.
2043 2007-04-04 Simon Goldschmidt
2044 * arch.h, api_msg.c, dhcp.c, msg_in.c, sockets.c: Introduced #define LWIP_UNUSED_ARG(x)
2045 use this for and architecture-independent form to tell the compiler you intentionally
2046 are not using this variable. Can be overriden in cc.h.
2048 2007-03-28 Frédéric Bernon
2049 * opt.h, netif.h, dhcp.h, dhcp.c: New configuration option LWIP_NETIF_HOSTNAME allow to
2050 define a hostname in netif struct (this is just a pointer, so, you can use a hardcoded
2051 string, point on one of your's ethernetif field, or alloc a string you will free yourself).
2052 It will be used by DHCP to register a client hostname, but can also be use when you call
2055 2007-03-28 Frédéric Bernon
2056 * netif.h, netif.c: A new NETIF_FLAG_ETHARP flag is defined in netif.h, to allow to
2057 initialize a network interface's flag with. It tell this interface is an ethernet
2058 device, and we can use ARP with it to do a "gratuitous ARP" (RFC 3220 "IP Mobility
2059 Support for IPv4" section 4.6) when interface is "up" with netif_set_up().
2061 2007-03-26 Frédéric Bernon, Jonathan Larmour
2062 * opt.h, tcpip.c: New configuration option LWIP_ARP allow to disable ARP init at build
2063 time if you only use PPP or SLIP. The default is enable. Note we don't have to call
2064 etharp_init in your port's initilization sequence if you use tcpip.c, because this call
2065 is done in tcpip_init function.
2067 2007-03-22 Frédéric Bernon
2068 * stats.h, stats.c, msg_in.c: Stats counters can be change to u32_t if necessary with the
2069 new option LWIP_STATS_LARGE. If you need this option, define LWIP_STATS_LARGE to 1 in
2070 your lwipopts.h. More, unused counters are not defined in the stats structs, and not
2071 display by stats_display(). Note that some options (SYS_STATS and RAW_STATS) are defined
2072 but never used. Fix msg_in.c with the correct #if test for a stat display.
2074 2007-03-21 Kieran Mansley
2075 * netif.c, netif.h: Apply patch#4197 with some changes (originator: rireland@hmgsl.com).
2076 Provides callback on netif up/down state change.
2078 2007-03-11 Frédéric Bernon, Mace Gael, Steve Reynolds
2079 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, igmp.h, igmp.c,
2080 ip.c, netif.h, tcpip.c, opt.h:
2081 New configuration option LWIP_IGMP to enable IGMP processing. Based on only one
2082 filter per all network interfaces. Declare a new function in netif to enable to
2083 control the MAC filter (to reduce lwIP traffic processing).
2085 2007-03-11 Frédéric Bernon
2086 * tcp.h, tcp.c, sockets.c, tcp_out.c, tcp_in.c, opt.h: Keepalive values can
2087 be configured at run time with LWIP_TCP_KEEPALIVE, but don't change this
2088 unless you know what you're doing (default are RFC1122 compliant). Note
2089 that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set in seconds.
2091 2007-03-08 Frédéric Bernon
2092 * tcp.h: Keepalive values can be configured at compile time, but don't change
2093 this unless you know what you're doing (default are RFC1122 compliant).
2095 2007-03-08 Frédéric Bernon
2096 * sockets.c, api.h, api_lib.c, tcpip.c, sys.h, sys.c, err.c, opt.h:
2097 Implement LWIP_SO_RCVTIMEO configuration option to enable/disable SO_RCVTIMEO
2098 on UDP sockets/netconn.
2100 2007-03-08 Simon Goldschmidt
2101 * snmp_msg.h, msg_in.c: SNMP UDP ports can be configured at compile time.
2103 2007-03-06 Frédéric Bernon
2104 * api.h, api_lib.c, sockets.h, sockets.c, tcpip.c, sys.h, sys.c, err.h:
2105 Implement SO_RCVTIMEO on UDP sockets/netconn.
2107 2007-02-28 Kieran Mansley (based on patch from Simon Goldschmidt)
2108 * api_lib.c, tcpip.c, memp.c, memp.h: make API msg structs allocated
2109 on the stack and remove the API msg type from memp
2111 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
2112 * sockets.h, sockets.c: Move socket initialization to new
2113 lwip_socket_init() function.
2114 NOTE: this changes the API with ports. Ports will have to be
2115 updated to call lwip_socket_init() now.
2117 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
2118 * api_lib.c: Use memcpy in netbuf_copy_partial.
2123 2008-03-17 Frédéric Bernon, Ed Kerekes
2124 * igmp.h, igmp.c: Fix bug #22613 "IGMP iphdr problem" (could have
2125 some problems to fill the IP header on some targets, use now the
2126 ip.h macros to do it).
2128 2008-03-13 Frédéric Bernon
2129 * sockets.c: Fix bug #22435 "lwip_recvfrom with TCP break;". Using
2130 (lwip_)recvfrom with valid "from" and "fromlen" parameters, on a
2131 TCP connection caused a crash. Note that using (lwip_)recvfrom
2132 like this is a bit slow and that using (lwip)getpeername is the
2133 good lwip way to do it (so, using recv is faster on tcp sockets).
2135 2008-03-12 Frédéric Bernon, Jonathan Larmour
2136 * api_msg.c, contrib/apps/ping.c: Fix bug #22530 "api_msg.c's
2137 recv_raw() does not consume data", and the ping sample (with
2138 LWIP_SOCKET=1, the code did the wrong supposition that lwip_recvfrom
2139 returned the IP payload, without the IP header).
2141 2008-03-04 Jonathan Larmour
2142 * mem.c, stats.c, mem.h: apply patch #6414 to avoid compiler errors
2143 and/or warnings on some systems where mem_size_t and size_t differ.
2144 * pbuf.c, ppp.c: Fix warnings on some systems with mem_malloc.
2146 2008-03-04 Kieran Mansley (contributions by others)
2147 * Numerous small compiler error/warning fixes from contributions to
2148 mailing list after 1.3.0 release candidate made.
2150 2008-01-25 Cui hengbin (integrated by Frédéric Bernon)
2151 * dns.c: Fix bug #22108 "DNS problem" caused by unaligned structures.
2153 2008-01-15 Kieran Mansley
2154 * tcp_out.c: BUG20511. Modify persist timer to start when we are
2155 prevented from sending by a small send window, not just a zero
2158 2008-01-09 Jonathan Larmour
2159 * opt.h, ip.c: Rename IP_OPTIONS define to IP_OPTIONS_ALLOWED to avoid
2160 conflict with Linux system headers.
2162 2008-01-06 Jonathan Larmour
2163 * dhcp.c: fix bug #19927: "DHCP NACK problem" by clearing any existing set IP
2164 address entirely on receiving a DHCPNAK, and restarting discovery.
2166 2007-12-21 Simon Goldschmidt
2167 * sys.h, api_lib.c, api_msg.c, sockets.c: fix bug #21698: "netconn->recv_avail
2168 is not protected" by using new macros for interlocked access to modify/test
2169 netconn->recv_avail.
2171 2007-12-20 Kieran Mansley (based on patch from Oleg Tyshev)
2172 * tcp_in.c: fix bug# 21535 (nrtx not reset correctly in SYN_SENT state)
2174 2007-12-20 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
2175 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: fix bug #20199 (better handling
2176 of silly window avoidance and prevent lwIP from shrinking the window)
2178 2007-12-04 Simon Goldschmidt
2179 * tcp.c, tcp_in.c: fix bug #21699 (segment leak in ooseq processing when last
2180 data packet was lost): add assert that all segment lists are empty in
2181 tcp_pcb_remove before setting pcb to CLOSED state; don't directly set CLOSED
2182 state from LAST_ACK in tcp_process
2184 2007-12-02 Simon Goldschmidt
2185 * sockets.h: fix bug #21654: exclude definition of struct timeval from #ifndef FD_SET
2186 If including <sys/time.h> for system-struct timeval, LWIP_TIMEVAL_PRIVATE now
2187 has to be set to 0 in lwipopts.h
2189 2007-12-02 Simon Goldschmidt
2190 * api_msg.c, api_lib.c: fix bug #21656 (recvmbox problem in netconn API): always
2191 allocate a recvmbox in netconn_new_with_proto_and_callback. For a tcp-listen
2192 netconn, this recvmbox is later freed and a new mbox is allocated for acceptmbox.
2193 This is a fix for thread-safety and allocates all items needed for a netconn
2194 when the netconn is created.
2196 2007-11-30 Simon Goldschmidt
2197 * udp.c: first attempt to fix bug #21655 (DHCP doesn't work reliably with multiple
2198 netifs): if LWIP_DHCP is enabled, UDP packets to DHCP_CLIENT_PORT are passed
2199 to netif->dhcp->pcb only (if that exists) and not to any other pcb for the same
2200 port (only solution to let UDP pcbs 'bind' to a netif instead of an IP address)
2202 2007-11-27 Simon Goldschmidt
2203 * ip.c: fixed bug #21643 (udp_send/raw_send don't fail if netif is down) by
2204 letting ip_route only use netifs that are up.
2206 2007-11-27 Simon Goldschmidt
2207 * err.h, api_lib.c, api_msg.c, sockets.c: Changed error handling: ERR_MEM, ERR_BUF
2208 and ERR_RTE are seen as non-fatal, all other errors are fatal. netconns and
2209 sockets block most operations once they have seen a fatal error.
2211 2007-11-27 Simon Goldschmidt
2212 * udp.h, udp.c, dhcp.c: Implemented new function udp_sendto_if which takes the
2213 netif to send as an argument (to be able to send on netifs that are down).
2215 2007-11-26 Simon Goldschmidt
2216 * tcp_in.c: Fixed bug #21582: pcb->acked accounting can be wrong when ACKs
2219 2007-11-21 Simon Goldschmidt
2220 * tcp.h, tcp_out.c, api_msg.c: Fixed bug #20287: tcp_output_nagle sends too early
2221 Fixed the nagle algorithm; nagle now also works for all raw API applications
2222 and has to be explicitly disabled with 'tcp_pcb->flags |= TF_NODELAY'
2224 2007-11-12 Frédéric Bernon
2225 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fixed bug #20900. Now, most
2226 of the netconn_peer and netconn_addr processing is done inside tcpip_thread
2227 context in do_getaddr.
2229 2007-11-10 Simon Goldschmidt
2230 * etharp.c: Fixed bug: assert fired when MEMP_ARP_QUEUE was empty (which can
2231 happen any time). Now the packet simply isn't enqueued when out of memory.
2233 2007-11-01 Simon Goldschmidt
2234 * tcp.c, tcp_in.c: Fixed bug #21494: The send mss (pcb->mss) is set to 536 (or
2235 TCP_MSS if that is smaller) as long as no MSS option is received from the
2238 2007-11-01 Simon Goldschmidt
2239 * tcp.h, tcp.c, tcp_in.c: Fixed bug #21491: The MSS option sent (with SYN)
2240 is now based on TCP_MSS instead of pcb->mss (on passive open now effectively
2241 sending our configured TCP_MSS instead of the one received).
2243 2007-11-01 Simon Goldschmidt
2244 * tcp_in.c: Fixed bug #21181: On active open, the initial congestion window was
2245 calculated based on the configured TCP_MSS, not on the MSS option received
2248 2007-10-09 Simon Goldschmidt
2249 * udp.c, inet.c, inet.h: Fixed UDPLite: send: Checksum was always generated too
2250 short and also was generated wrong if checksum coverage != tot_len;
2251 receive: checksum was calculated wrong if checksum coverage != tot_len
2253 2007-10-08 Simon Goldschmidt
2254 * mem.c: lfree was not updated in mem_realloc!
2256 2007-10-07 Frédéric Bernon
2257 * sockets.c, api.h, api_lib.c: First step to fix "bug #20900 : Potential
2258 crash error problem with netconn_peer & netconn_addr". VERY IMPORTANT:
2259 this change cause an API breakage for netconn_addr, since a parameter
2260 type change. Any compiler should cause an error without any changes in
2261 yours netconn_peer calls (so, it can't be a "silent change"). It also
2262 reduce a little bit the footprint for socket layer (lwip_getpeername &
2263 lwip_getsockname use now a common lwip_getaddrname function since
2264 netconn_peer & netconn_addr have the same parameters).
2266 2007-09-20 Simon Goldschmidt
2267 * tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state)
2268 by checking tcp_tw_pcbs also
2270 2007-09-19 Simon Goldschmidt
2271 * icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
2273 2007-09-15 Mike Kleshov
2274 * mem.c: Fixed bug #21077 (inaccuracy in calculation of lwip_stat.mem.used)
2276 2007-09-06 Frédéric Bernon
2277 * several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
2278 it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
2279 already include "lwip/arch.h"). Like that, default defines are provided by "lwip/arch.h"
2280 if they are not defined in cc.h, in the same spirit than "lwip/opt.h" for lwipopts.h.
2282 2007-08-30 Frédéric Bernon
2283 * igmp.h, igmp.c: Some changes to remove some redundant code, add some traces,
2284 and fix some coding style.
2286 2007-08-28 Frédéric Bernon
2287 * tcpip.c: Fix TCPIP_MSG_INPKT processing: now, tcpip_input can be used for any
2288 kind of packets. These packets are considered like Ethernet packets (payload
2289 pointing to ethhdr) if the netif got the NETIF_FLAG_ETHARP flag. Else, packets
2290 are considered like IP packets (payload pointing to iphdr).
2292 2007-08-27 Frédéric Bernon
2293 * api.h, api_lib.c, api_msg.c: First fix for "bug #20900 : Potential crash error
2294 problem with netconn_peer & netconn_addr". Introduce NETCONN_LISTEN netconn_state
2295 and remove obsolete ones (NETCONN_RECV & NETCONN_ACCEPT).
2297 2007-08-24 Kieran Mansley
2298 * inet.c Modify (acc >> 16) test to ((acc >> 16) != 0) to help buggy
2299 compiler (Paradigm C++)
2301 2007-08-09 Frédéric Bernon, Bill Florac
2302 * stats.h, stats.c, igmp.h, igmp.c, opt.h: Fix for bug #20503 : IGMP Improvement.
2303 Introduce IGMP_STATS to centralize statistics management.
2305 2007-08-09 Frédéric Bernon, Bill Florac
2306 * udp.c: Fix for bug #20503 : IGMP Improvement. Enable to receive a multicast
2307 packet on a udp pcb binded on an netif's IP address, and not on "any".
2309 2007-08-09 Frédéric Bernon, Bill Florac
2310 * igmp.h, igmp.c, ip.c: Fix minor changes from bug #20503 : IGMP Improvement.
2311 This is mainly on using lookup/lookfor, and some coding styles...
2313 2007-07-26 Frédéric Bernon (and "thedoctor")
2314 * igmp.c: Fix bug #20595 to accept IGMPv3 "Query" messages.
2316 2007-07-25 Simon Goldschmidt
2317 * api_msg.c, tcp.c: Another fix for bug #20021: by not returning an error if
2318 tcp_output fails in tcp_close, the code in do_close_internal gets simpler
2319 (tcp_output is called again later from tcp timers).
2321 2007-07-25 Simon Goldschmidt
2322 * ip_frag.c: Fixed bug #20429: use the new pbuf_copy_partial instead of the old
2323 copy_from_pbuf, which illegally modified the given pbuf.
2325 2007-07-25 Simon Goldschmidt
2326 * tcp_out.c: tcp_enqueue: pcb->snd_queuelen didn't work for chaine PBUF_RAMs:
2327 changed snd_queuelen++ to snd_queuelen += pbuf_clen(p).
2329 2007-07-24 Simon Goldschmidt
2330 * api_msg.c, tcp.c: Fix bug #20480: Check the pcb passed to tcp_listen() for the
2331 correct state (must be CLOSED).
2333 2007-07-13 Thomas Taranowski (commited by Jared Grubb)
2334 * memp.c: Fix bug #20478: memp_malloc returned NULL+MEMP_SIZE on failed
2335 allocation. It now returns NULL.
2337 2007-07-13 Frédéric Bernon
2338 * api_msg.c: Fix bug #20318: api_msg "recv" callbacks don't call pbuf_free in
2341 2007-07-13 Frédéric Bernon
2342 * api_msg.c: Fix bug #20315: possible memory leak problem if tcp_listen failed,
2343 because current code doesn't follow rawapi.txt documentation.
2345 2007-07-13 Kieran Mansley
2346 * src/core/tcp_in.c Apply patch#5741 from Oleg Tyshev to fix bug in
2347 out of sequence processing of received packets
2349 2007-07-03 Simon Goldschmidt
2350 * nearly-all-files: Added assertions where PBUF_RAM pbufs are used and an
2351 assumption is made that this pbuf is in one piece (i.e. not chained). These
2352 assumptions clash with the possibility of converting to fully pool-based
2353 pbuf implementations, where PBUF_RAM pbufs might be chained.
2355 2007-07-03 Simon Goldschmidt
2356 * api.h, api_lib.c, api_msg.c: Final fix for bug #20021 and some other problems
2357 when closing tcp netconns: removed conn->sem, less context switches when
2358 closing, both netconn_close and netconn_delete should safely close tcp
2361 2007-07-02 Simon Goldschmidt
2362 * ipv4/ip.h, ipv6/ip.h, opt.h, netif.h, etharp.h, ipv4/ip.c, netif.c, raw.c,
2363 tcp_out.c, udp.c, etharp.c: Added option LWIP_NETIF_HWADDRHINT (default=off)
2364 to cache ARP table indices with each pcb instead of single-entry cache for
2367 2007-07-02 Simon Goldschmidt
2368 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Added some ASSERTS and casts to prevent
2369 warnings when assigning to smaller types.
2371 2007-06-28 Simon Goldschmidt
2372 * tcp_out.c: Added check to prevent tcp_pcb->snd_queuelen from overflowing.
2374 2007-06-28 Simon Goldschmidt
2375 * tcp.h: Fixed bug #20287: Fixed nagle algorithm (sending was done too early if
2376 a segment contained chained pbufs)
2378 2007-06-28 Frédéric Bernon
2379 * autoip.c: replace most of rand() calls by a macro LWIP_AUTOIP_RAND which compute
2380 a "pseudo-random" value based on netif's MAC and some autoip fields. It's always
2381 possible to define this macro in your own lwipopts.h to always use C library's
2382 rand(). Note that autoip_create_rand_addr doesn't use this macro.
2384 2007-06-28 Frédéric Bernon
2385 * netifapi.h, netifapi.c, tcpip.h, tcpip.c: Update code to handle the option
2386 LWIP_TCPIP_CORE_LOCKING, and do some changes to be coherent with last modifications
2387 in api_lib/api_msg (use pointers and not type with table, etc...)
2389 2007-06-26 Simon Goldschmidt
2390 * udp.h: Fixed bug #20259: struct udp_hdr was lacking the packin defines.
2392 2007-06-25 Simon Goldschmidt
2393 * udp.c: Fixed bug #20253: icmp_dest_unreach was called with a wrong p->payload
2394 for udp packets with no matching pcb.
2396 2007-06-25 Simon Goldschmidt
2397 * udp.c: Fixed bug #20220: UDP PCB search in udp_input(): a non-local match
2398 could get udp input packets if the remote side matched.
2400 2007-06-13 Simon Goldschmidt
2401 * netif.c: Fixed bug #20180 (TCP pcbs listening on IP_ADDR_ANY could get
2402 changed in netif_set_ipaddr if previous netif->ip_addr.addr was 0.
2404 2007-06-13 Simon Goldschmidt
2405 * api_msg.c: pcb_new sets conn->err if protocol is not implemented
2406 -> netconn_new_..() does not allocate a new connection for unsupported
2409 2007-06-13 Frédéric Bernon, Simon Goldschmidt
2410 * api_lib.c: change return expression in netconn_addr and netconn_peer, because
2411 conn->err was reset to ERR_OK without any reasons (and error was lost)...
2413 2007-06-13 Frédéric Bernon, Matthias Weisser
2414 * opt.h, mem.h, mem.c, memp.c, pbuf.c, ip_frag.c, vj.c: Fix bug #20162. Rename
2415 MEM_ALIGN in LWIP_MEM_ALIGN and MEM_ALIGN_SIZE in LWIP_MEM_ALIGN_SIZE to avoid
2416 some macro names collision with some OS macros.
2418 2007-06-11 Simon Goldschmidt
2419 * udp.c: UDP Lite: corrected the use of chksum_len (based on RFC3828: if it's 0,
2420 create checksum over the complete packet. On RX, if it's < 8 (and not 0),
2421 discard the packet. Also removed the duplicate 'udphdr->chksum = 0' for both
2424 2007-06-11 Srinivas Gollakota & Oleg Tyshev
2425 * tcp_out.c: Fix for bug #20075 : "A problem with keep-alive timer and TCP flags"
2426 where TCP flags wasn't initialized in tcp_keepalive.
2428 2007-06-03 Simon Goldschmidt
2429 * udp.c: udp_input(): Input pbuf was not freed if pcb had no recv function
2430 registered, p->payload was modified without modifying p->len if sending
2431 icmp_dest_unreach() (had no negative effect but was definitively wrong).
2433 2007-06-03 Simon Goldschmidt
2434 * icmp.c: Corrected bug #19937: For responding to an icmp echo request, icmp
2435 re-used the input pbuf even if that didn't have enough space to include the
2436 link headers. Now the space is tested and a new pbuf is allocated for the
2437 echo response packet if the echo request pbuf isn't big enough.
2439 2007-06-01 Simon Goldschmidt
2440 * sockets.c: Checked in patch #5914: Moved sockopt processing into tcpip_thread.
2442 2007-05-23 Frédéric Bernon
2443 * api_lib.c, sockets.c: Fixed bug #5958 for netconn_listen (acceptmbox only
2444 allocated by do_listen if success) and netconn_accept errors handling. In
2445 most of api_lib functions, we replace some errors checkings like "if (conn==NULL)"
2446 by ASSERT, except for netconn_delete.
2448 2007-05-23 Frédéric Bernon
2449 * api_lib.c: Fixed bug #5957 "Safe-thread problem inside netconn_recv" to return
2450 an error code if it's impossible to fetch a pbuf on a TCP connection (and not
2451 directly close the recvmbox).
2453 2007-05-22 Simon Goldschmidt
2454 * tcp.c: Fixed bug #1895 (tcp_bind not correct) by introducing a list of
2455 bound but unconnected (and non-listening) tcp_pcbs.
2457 2007-05-22 Frédéric Bernon
2458 * sys.h, sys.c, api_lib.c, tcpip.c: remove sys_mbox_fetch_timeout() (was only
2459 used for LWIP_SO_RCVTIMEO option) and use sys_arch_mbox_fetch() instead of
2460 sys_mbox_fetch() in api files. Now, users SHOULD NOT use internal lwIP features
2461 like "sys_timeout" in their application threads.
2463 2007-05-22 Frédéric Bernon
2464 * api.h, api_lib.c, api_msg.h, api_msg.c: change the struct api_msg_msg to see
2465 which parameters are used by which do_xxx function, and to avoid "misusing"
2466 parameters (patch #5938).
2468 2007-05-22 Simon Goldschmidt
2469 * api_lib.c, api_msg.c, raw.c, api.h, api_msg.h, raw.h: Included patch #5938:
2470 changed raw_pcb.protocol from u16_t to u8_t since for IPv4 and IPv6, proto
2471 is only 8 bits wide. This affects the api, as there, the protocol was
2474 2007-05-18 Simon Goldschmidt
2475 * memp.c: addition to patch #5913: smaller pointer was returned but
2476 memp_memory was the same size -> did not save memory.
2478 2007-05-16 Simon Goldschmidt
2479 * loopif.c, slipif.c: Fix bug #19729: free pbuf if netif->input() returns
2482 2007-05-16 Simon Goldschmidt
2483 * api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same
2484 as the one of the netif used for sending to prevent sending from old
2485 addresses after a netif address gets changed (partly fixes bug #3168).
2487 2007-05-16 Frédéric Bernon
2488 * tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work
2489 with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in
2490 tcpip_init) because we have to be sure that network interfaces are already
2491 added (mac filter is updated only in igmp_init for the moment).
2493 2007-05-16 Simon Goldschmidt
2494 * mem.c, memp.c: Removed semaphores from memp, changed sys_sem_wait calls
2495 into sys_arch_sem_wait calls to prevent timers from running while waiting
2496 for the heap. This fixes bug #19167.
2498 2007-05-13 Simon Goldschmidt
2499 * tcp.h, sockets.h, sockets.c: Fixed bug from patch #5865 by moving the defines
2500 for socket options (lwip_set/-getsockopt) used with level IPPROTO_TCP from
2503 2007-05-07 Simon Goldschmidt
2504 * mem.c: Another attempt to fix bug #17922.
2506 2007-05-04 Simon Goldschmidt
2507 * pbuf.c, pbuf.h, etharp.c: Further update to ARP queueing: Changed pbuf_copy()
2508 implementation so that it can be reused (don't allocate the target
2509 pbuf inside pbuf_copy()).
2511 2007-05-04 Simon Goldschmidt
2512 * memp.c: checked in patch #5913: in memp_malloc() we can return memp as mem
2513 to save a little RAM (next pointer of memp is not used while not in pool).
2516 * sockets.c: Fix ioctl FIONREAD when some data remains from last recv.
2519 2007-04-23 Simon Goldschmidt
2520 * loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results
2521 in NULL reference for incoming TCP packets". Loopif has to be configured
2522 (using LWIP_LOOPIF_MULTITHREADING) to directly call netif->input()
2523 (multithreading environments, e.g. netif->input() = tcpip_input()) or
2524 putting packets on a list that is fed to the stack by calling loopif_poll()
2525 (single-thread / NO_SYS / polling environment where e.g.
2526 netif->input() = ip_input).
2528 2007-04-17 Jonathan Larmour
2529 * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold
2530 the difference between two u16_t's.
2531 * sockets.h: FD_SETSIZE needs to match number of sockets, which is
2532 MEMP_NUM_NETCONN in sockets.c right now.
2534 2007-04-12 Jonathan Larmour
2535 * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580).
2537 2007-04-12 Kieran Mansley
2538 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Modify way the retransmission
2539 timer is reset to fix bug#19434, with help from Oleg Tyshev.
2541 2007-04-11 Simon Goldschmidt
2542 * etharp.c, pbuf.c, pbuf.h: 3rd fix for bug #11400 (arp-queuing): More pbufs than
2543 previously thought need to be copied (everything but PBUF_ROM!). Cleaned up
2544 pbuf.c: removed functions no needed any more (by etharp).
2546 2007-04-11 Kieran Mansley
2547 * inet.c, ip_addr.h, sockets.h, sys.h, tcp.h: Apply patch #5745: Fix
2548 "Constant is long" warnings with 16bit compilers. Contributed by
2549 avatar@mmlab.cse.yzu.edu.tw
2551 2007-04-05 Frédéric Bernon, Jonathan Larmour
2552 * api_msg.c: Fix bug #16830: "err_tcp() posts to connection mailbox when no pend on
2553 the mailbox is active". Now, the post is only done during a connect, and do_send,
2554 do_write and do_join_leave_group don't do anything if a previous error was signaled.
2556 2007-04-03 Frédéric Bernon
2557 * ip.c: Don't set the IP_DF ("Don't fragment") flag in the IP header in IP output
2558 packets. See patch #5834.
2560 2007-03-30 Frédéric Bernon
2561 * api_msg.c: add a "pcb_new" helper function to avoid redundant code, and to add
2562 missing pcb allocations checking (in do_bind, and for each raw_new). Fix style.
2564 2007-03-30 Frédéric Bernon
2565 * most of files: prefix all debug.h define with "LWIP_" to avoid any conflict with
2566 others environment defines (these were too "generic").
2568 2007-03-28 Frédéric Bernon
2569 * api.h, api_lib.c, sockets.c: netbuf_ref doesn't check its internal pbuf_alloc call
2570 result and can cause a crash. lwip_send now check netbuf_ref result.
2572 2007-03-28 Simon Goldschmidt
2573 * sockets.c Remove "#include <errno.h>" from sockets.c to avoid multiple
2574 definition of macros (in errno.h and lwip/arch.h) if LWIP_PROVIDE_ERRNO is
2575 defined. This is the way it should have been already (looking at
2578 2007-03-28 Kieran Mansley
2579 * opt.h Change default PBUF_POOL_BUFSIZE (again) to accomodate default MSS +
2580 IP and TCP headers *and* physical link headers
2582 2007-03-26 Frédéric Bernon (based on patch from Dmitry Potapov)
2583 * api_lib.c: patch for netconn_write(), fixes a possible race condition which cause
2584 to send some garbage. It is not a definitive solution, but the patch does solve
2585 the problem for most cases.
2587 2007-03-22 Frédéric Bernon
2588 * api_msg.h, api_msg.c: Remove obsolete API_MSG_ACCEPT and do_accept (never used).
2590 2007-03-22 Frédéric Bernon
2591 * api_lib.c: somes resources couldn't be freed if there was errors during
2592 netconn_new_with_proto_and_callback.
2594 2007-03-22 Frédéric Bernon
2595 * ethernetif.c: update netif->input calls to check return value. In older ports,
2596 it's a good idea to upgrade them, even if before, there could be another problem
2597 (access to an uninitialized mailbox).
2599 2007-03-21 Simon Goldschmidt
2600 * sockets.c: fixed bug #5067 (essentialy a signed/unsigned warning fixed
2601 by casting to unsigned).
2603 2007-03-21 Frédéric Bernon
2604 * api_lib.c, api_msg.c, tcpip.c: integrate sys_mbox_fetch(conn->mbox, NULL) calls from
2605 api_lib.c to tcpip.c's tcpip_apimsg(). Now, use a local variable and not a
2606 dynamic one from memp to send tcpip_msg to tcpip_thread in a synchrone call.
2607 Free tcpip_msg from tcpip_apimsg is not done in tcpip_thread. This give a
2608 faster and more reliable communication between api_lib and tcpip.
2610 2007-03-21 Frédéric Bernon
2611 * opt.h: Add LWIP_NETIF_CALLBACK (to avoid compiler warning) and set it to 0.
2613 2007-03-21 Frédéric Bernon
2614 * api_msg.c, igmp.c, igmp.h: Fix C++ style comments
2616 2007-03-21 Kieran Mansley
2617 * opt.h Change default PBUF_POOL_BUFSIZE to accomodate default MSS +
2620 2007-03-21 Kieran Mansley
2621 * Fix all uses of pbuf_header to check the return value. In some
2622 cases just assert if it fails as I'm not sure how to fix them, but
2623 this is no worse than before when they would carry on regardless
2626 2007-03-21 Kieran Mansley
2627 * sockets.c, igmp.c, igmp.h, memp.h: Fix C++ style comments and
2628 comment out missing header include in icmp.c
2630 2007-03-20 Frédéric Bernon
2631 * memp.h, stats.c: Fix stats_display function where memp_names table wasn't
2632 synchronized with memp.h.
2634 2007-03-20 Frédéric Bernon
2635 * tcpip.c: Initialize tcpip's mbox, and verify if initialized in tcpip_input,
2636 tcpip_ethinput, tcpip_callback, tcpip_apimsg, to fix a init problem with
2637 network interfaces. Also fix a compiler warning.
2639 2007-03-20 Kieran Mansley
2640 * udp.c: Only try and use pbuf_header() to make space for headers if
2641 not a ROM or REF pbuf.
2643 2007-03-19 Frédéric Bernon
2644 * api_msg.h, api_msg.c, tcpip.h, tcpip.c: Add return types to tcpip_apimsg()
2647 2007-03-19 Frédéric Bernon
2648 * Remove unimplemented "memp_realloc" function from memp.h.
2650 2007-03-11 Simon Goldschmidt
2651 * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused
2654 2007-03-11 Simon Goldschmidt (based on patch from Dmitry Potapov)
2655 * api_lib.c, sockets.c, api.h, api_msg.h, sockets.h: Fixed bug #19251
2656 (missing `const' qualifier in socket functions), to get more compatible to
2657 standard POSIX sockets.
2659 2007-03-11 Frédéric Bernon (based on patch from Dmitry Potapov)
2660 * sockets.c: Add asserts inside bind, connect and sendto to check input
2661 parameters. Remove excessive set_errno() calls after get_socket(), because
2662 errno is set inside of get_socket(). Move last sock_set_errno() inside
2665 2007-03-09 Simon Goldschmidt
2666 * memp.c: Fixed bug #11400: New etharp queueing introduced bug: memp_memory
2667 was allocated too small.
2669 2007-03-06 Simon Goldschmidt
2670 * tcpip.c: Initialize dhcp timers in tcpip_thread (if LWIP_DHCP) to protect
2671 the stack from concurrent access.
2673 2007-03-06 Frédéric Bernon, Dmitry Potapov
2674 * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy
2675 call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().
2677 2007-03-06 Simon Goldschmidt
2678 * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files
2679 if IP_FRAG == 0 and IP_REASSEMBLY == 0
2681 2007-03-06 Frédéric Bernon, Simon Goldschmidt
2682 * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration
2683 option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput.
2684 Allow to do ARP processing for incoming packets inside tcpip_thread
2685 (protecting ARP layer against concurrent access). You can also disable
2686 old code using tcp_input with new define ETHARP_TCPIP_INPUT set to 0.
2687 Older ports have to use tcpip_ethinput.
2689 2007-03-06 Simon Goldschmidt (based on patch from Dmitry Potapov)
2690 * err.h, err.c: fixed compiler warning "initialization dircards qualifiers
2691 from pointer target type"
2693 2007-03-05 Frédéric Bernon
2694 * opt.h, sockets.h: add new configuration options (LWIP_POSIX_SOCKETS_IO_NAMES,
2695 ETHARP_TRUST_IP_MAC, review SO_REUSE)
2697 2007-03-04 Frédéric Bernon
2698 * api_msg.c: Remove some compiler warnings : parameter "pcb" was never
2701 2007-03-04 Frédéric Bernon
2702 * api_lib.c: Fix "[patch #5764] api_lib.c cleanup: after patch #5687" (from
2704 The api_msg struct stay on the stack (not moved to netconn struct).
2706 2007-03-04 Simon Goldschmidt (based on patch from Dmitry Potapov)
2707 * pbuf.c: Fix BUG#19168 - pbuf_free can cause deadlock (if
2708 SYS_LIGHTWEIGHT_PROT=1 & freeing PBUF_RAM when mem_sem is not available)
2709 Also fixed cast warning in pbuf_alloc()
2711 2007-03-04 Simon Goldschmidt
2712 * etharp.c, etharp.h, memp.c, memp.h, opt.h: Fix BUG#11400 - don't corrupt
2713 existing pbuf chain when enqueuing multiple pbufs to a pending ARP request
2715 2007-03-03 Frédéric Bernon
2716 * udp.c: remove obsolete line "static struct udp_pcb *pcb_cache = NULL;"
2717 It is static, and never used in udp.c except udp_init().
2719 2007-03-02 Simon Goldschmidt
2720 * tcpip.c: Moved call to ip_init(), udp_init() and tcp_init() from
2721 tcpip_thread() to tcpip_init(). This way, raw API connections can be
2722 initialized before tcpip_thread is running (e.g. before OS is started)
2724 2007-03-02 Frédéric Bernon
2725 * rawapi.txt: Fix documentation mismatch with etharp.h about etharp_tmr's call
2728 2007-02-28 Kieran Mansley
2729 * pbuf.c: Fix BUG#17645 - ensure pbuf payload pointer is not moved
2730 outside the region of the pbuf by pbuf_header()
2732 2007-02-28 Kieran Mansley
2733 * sockets.c: Fix BUG#19161 - ensure milliseconds timeout is non-zero
2734 when supplied timeout is also non-zero
2738 2006-12-05 Leon Woestenberg
2739 * CHANGELOG: Mention STABLE-1.2.0 release.
2743 2006-12-01 Christiaan Simons
2744 * mem.h, opt.h: Added MEM_LIBC_MALLOC option.
2745 Note this is a workaround. Currently I have no other options left.
2747 2006-10-26 Christiaan Simons (accepted patch by Jonathan Larmour)
2748 * ipv4/ip_frag.c: rename MAX_MTU to IP_FRAG_MAX_MTU and move define
2749 to include/lwip/opt.h.
2750 * ipv4/lwip/ip_frag.h: Remove unused IP_REASS_INTERVAL.
2751 Move IP_REASS_MAXAGE and IP_REASS_BUFSIZE to include/lwip/opt.h.
2752 * opt.h: Add above new options.
2754 2006-08-18 Christiaan Simons
2755 * tcp_{in,out}.c: added SNMP counters.
2756 * ipv4/ip.c: added SNMP counters.
2757 * ipv4/ip_frag.c: added SNMP counters.
2759 2006-08-08 Christiaan Simons
2760 * etharp.{c,h}: added etharp_find_addr() to read
2761 (stable) ethernet/IP address pair from ARP table
2763 2006-07-14 Christiaan Simons
2764 * mib_structs.c: added
2765 * include/lwip/snmp_structs.h: added
2766 * netif.{c,h}, netif/ethernetif.c: added SNMP statistics to netif struct
2768 2006-07-06 Christiaan Simons
2769 * snmp/asn1_{enc,dec}.c added
2771 * snmp/msg_{in,out}.c added
2772 * include/lwip/snmp_asn1.h added
2773 * include/lwip/snmp_msg.h added
2774 * doc/snmp_agent.txt added
2776 2006-03-29 Christiaan Simons
2777 * inet.c, inet.h: Added platform byteswap support.
2778 Added LWIP_PLATFORM_BYTESWAP define (defaults to 0) and
2779 optional LWIP_PLATFORM_HTONS(), LWIP_PLATFORM_HTONL() macros.
2783 2006-11-30 Christiaan Simons
2784 * dhcp.c: Fixed false triggers of request_timeout.
2786 2006-11-28 Christiaan Simons
2787 * netif.c: In netif_add() fixed missing clear of ip_addr, netmask, gw and flags.
2789 2006-10-11 Christiaan Simons
2790 * api_lib.c etharp.c, ip.c, memp.c, stats.c, sys.{c,h} tcp.h:
2791 Partially accepted patch #5449 for ANSI C compatibility / build fixes.
2792 * ipv4/lwip/ip.h ipv6/lwip/ip.h: Corrected UDP-Lite protocol
2793 identifier from 170 to 136 (bug #17574).
2795 2006-10-10 Christiaan Simons
2796 * api_msg.c: Fixed Nagle algorithm as reported by Bob Grice.
2798 2006-08-17 Christiaan Simons
2799 * udp.c: Fixed bug #17200, added check for broadcast
2800 destinations for PCBs bound to a unicast address.
2802 2006-08-07 Christiaan Simons
2803 * api_msg.c: Flushing TCP output in do_close() (bug #15926).
2805 2006-06-27 Christiaan Simons
2806 * api_msg.c: Applied patch for cold case (bug #11135).
2807 In accept_function() ensure newconn->callback is always initialized.
2809 2006-06-15 Christiaan Simons
2810 * mem.h: added MEM_SIZE_F alias to fix an ancient cold case (bug #1748),
2811 facilitate printing of mem_size_t and u16_t statistics.
2813 2006-06-14 Christiaan Simons
2814 * api_msg.c: Applied patch #5146 to handle allocation failures
2815 in accept() by Kevin Lawson.
2817 2006-05-26 Christiaan Simons
2818 * api_lib.c: Removed conn->sem creation and destruction
2819 from netconn_write() and added sys_sem_new to netconn_new_*.
2823 2006-03-03 Christiaan Simons
2824 * ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap
2825 access and added pbuf_alloc() return value checks.
2827 2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net>
2828 * tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is
2829 now handled by the checksum routine properly.
2831 2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net>
2832 * pbuf.c: Fix alignment; pbuf_init() would not work unless
2833 pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.)
2835 2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net>
2836 * tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch
2837 submitted by Mitrani Hiroshi.
2839 2005-12-15 Christiaan Simons
2840 * inet.c: Disabled the added summing routine to preserve code space.
2842 2005-12-14 Leon Woestenberg <leon.woestenberg@gmx.net>
2843 * tcp_in.c: Duplicate FIN ACK race condition fix by Kelvin Lawson.
2844 Added Curt McDowell's optimized checksumming routine for future
2845 inclusion. Need to create test case for unaliged, aligned, odd,
2846 even length combination of cases on various endianess machines.
2848 2005-12-09 Christiaan Simons
2849 * inet.c: Rewrote standard checksum routine in proper portable C.
2851 2005-11-25 Christiaan Simons
2852 * udp.c tcp.c: Removed SO_REUSE hack. Should reside in socket code only.
2853 * *.c: introduced cc.h LWIP_DEBUG formatters matching the u16_t, s16_t,
2854 u32_t, s32_t typedefs. This solves most debug word-length assumes.
2856 2005-07-17 Leon Woestenberg <leon.woestenberg@gmx.net>
2857 * inet.c: Fixed unaligned 16-bit access in the standard checksum
2858 routine by Peter Jolasson.
2859 * slipif.c: Fixed implementation assumption of single-pbuf datagrams.
2861 2005-02-04 Leon Woestenberg <leon.woestenberg@gmx.net>
2862 * tcp_out.c: Fixed uninitialized 'queue' referenced in memerr branch.
2863 * tcp_{out|in}.c: Applied patch fixing unaligned access.
2865 2005-01-04 Leon Woestenberg <leon.woestenberg@gmx.net>
2866 * pbuf.c: Fixed missing semicolon after LWIP_DEBUG statement.
2868 2005-01-03 Leon Woestenberg <leon.woestenberg@gmx.net>
2869 * udp.c: UDP pcb->recv() was called even when it was NULL.
2873 2004-12-28 Leon Woestenberg <leon.woestenberg@gmx.net>
2874 * etharp.*: Disabled multiple packets on the ARP queue.
2875 This clashes with TCP queueing.
2877 2004-11-28 Leon Woestenberg <leon.woestenberg@gmx.net>
2878 * etharp.*: Fixed race condition from ARP request to ARP timeout.
2879 Halved the ARP period, doubled the period counts.
2880 ETHARP_MAX_PENDING now should be at least 2. This prevents
2881 the counter from reaching 0 right away (which would allow
2882 too little time for ARP responses to be received).
2884 2004-11-25 Leon Woestenberg <leon.woestenberg@gmx.net>
2885 * dhcp.c: Decline messages were not multicast but unicast.
2886 * etharp.c: ETHARP_CREATE is renamed to ETHARP_TRY_HARD.
2887 Do not try hard to insert arbitrary packet's source address,
2888 etharp_ip_input() now calls etharp_update() without ETHARP_TRY_HARD.
2889 etharp_query() now always DOES call ETHARP_TRY_HARD so that users
2890 querying an address will see it appear in the cache (DHCP could
2891 suffer from this when a server invalidly gave an in-use address.)
2892 * ipv4/ip_addr.h: Renamed ip_addr_maskcmp() to _netcmp() as we are
2893 comparing network addresses (identifiers), not the network masks
2895 * ipv4/ip_addr.c: ip_addr_isbroadcast() now checks that the given
2896 IP address actually belongs to the network of the given interface.
2898 2004-11-24 Kieran Mansley <kjm25@cam.ac.uk>
2899 * tcp.c: Increment pcb->snd_buf when ACK is received in SYN_SENT state.
2903 2004-10-16 Kieran Mansley <kjm25@cam.ac.uk>
2904 * tcp.c: Add code to tcp_recved() to send an ACK (window update) immediately,
2905 even if one is already pending, if the rcv_wnd is above a threshold
2906 (currently TCP_WND/2). This avoids waiting for a timer to expire to send a
2907 delayed ACK in order to open the window if the stack is only receiving data.
2909 2004-09-12 Kieran Mansley <kjm25@cam.ac.uk>
2910 * tcp*.*: Retransmit time-out handling improvement by Sam Jansen.
2912 2004-08-20 Tony Mountifield <tony@softins.co.uk>
2913 * etharp.c: Make sure the first pbuf queued on an ARP entry
2914 is properly ref counted.
2916 2004-07-27 Tony Mountifield <tony@softins.co.uk>
2917 * debug.h: Added (int) cast in LWIP_DEBUGF() to avoid compiler
2918 warnings about comparison.
2919 * pbuf.c: Stopped compiler complaining of empty if statement
2920 when LWIP_DEBUGF() empty. Closed an unclosed comment.
2921 * tcp.c: Stopped compiler complaining of empty if statement
2922 when LWIP_DEBUGF() empty.
2923 * ip.h Corrected IPH_TOS() macro: returns a byte, so doesn't need htons().
2924 * inet.c: Added a couple of casts to quiet the compiler.
2925 No need to test isascii(c) before isdigit(c) or isxdigit(c).
2927 2004-07-22 Tony Mountifield <tony@softins.co.uk>
2928 * inet.c: Made data types consistent in inet_ntoa().
2929 Added casts for return values of checksum routines, to pacify compiler.
2930 * ip_frag.c, tcp_out.c, sockets.c, pbuf.c
2931 Small corrections to some debugging statements, to pacify compiler.
2933 2004-07-21 Tony Mountifield <tony@softins.co.uk>
2934 * etharp.c: Removed spurious semicolon and added missing end-of-comment.
2935 * ethernetif.c Updated low_level_output() to match prototype for
2936 netif->linkoutput and changed low_level_input() similarly for consistency.
2937 * api_msg.c: Changed recv_raw() from int to u8_t, to match prototype
2938 of raw_recv() in raw.h and so avoid compiler error.
2939 * sockets.c: Added trivial (int) cast to keep compiler happier.
2940 * ip.c, netif.c Changed debug statements to use the tidier ip4_addrN() macros.
2946 2004-07-05 Leon Woestenberg <leon.woestenberg@gmx.net>
2947 * sockets.*: Restructured LWIP_PRIVATE_TIMEVAL. Make sure
2948 your cc.h file defines this either 1 or 0. If non-defined,
2950 * .c: Added <string.h> and <errno.h> includes where used.
2951 * etharp.c: Made some array indices unsigned.
2953 2004-06-27 Leon Woestenberg <leon.woestenberg@gmx.net>
2954 * netif.*: Added netif_set_up()/down().
2955 * dhcp.c: Changes to restart program flow.
2957 2004-05-07 Leon Woestenberg <leon.woestenberg@gmx.net>
2958 * etharp.c: In find_entry(), instead of a list traversal per candidate, do a
2959 single-pass lookup for different candidates. Should exploit locality.
2961 2004-04-29 Leon Woestenberg <leon.woestenberg@gmx.net>
2962 * tcp*.c: Cleaned up source comment documentation for Doxygen processing.
2963 * opt.h: ETHARP_ALWAYS_INSERT option removed to comply with ARP RFC.
2964 * etharp.c: update_arp_entry() only adds new ARP entries when adviced to by
2965 the caller. This deprecates the ETHARP_ALWAYS_INSERT overrule option.
2969 2004-04-27 Leon Woestenberg <leon.woestenberg@gmx.net>
2970 * etharp.c: Applied patch of bug #8708 by Toni Mountifield with a solution
2971 suggested by Timmy Brolin. Fix for 32-bit processors that cannot access
2972 non-aligned 32-bit words, such as soms 32-bit TCP/IP header fields. Fix
2973 is to prefix the 14-bit Ethernet headers with two padding bytes.
2975 2004-04-23 Leon Woestenberg <leon.woestenberg@gmx.net>
2976 * ip_addr.c: Fix in the ip_addr_isbroadcast() check.
2977 * etharp.c: Fixed the case where the packet that initiates the ARP request
2978 is not queued, and gets lost. Fixed the case where the packets destination
2979 address is already known; we now always queue the packet and perform an ARP
2986 * Fixed TCP bug for SYN_SENT to ESTABLISHED state transition.
2987 * Fixed TCP bug in dequeueing of FIN from out of order segment queue.
2988 * Fixed two possible NULL references in rare cases.
2994 * Fixed DHCP which did not include the IP address in DECLINE messages.
2998 * etharp.c has been hauled over a bit.
3004 * Fixed TCP bug induced by bad window resizing with unidirectional TCP traffic.
3005 * Packets sent from ARP queue had invalid source hardware address.
3009 * Pass-by ARP requests do now update the cache.
3013 * No longer dependent on ctype.h.
3014 * New socket options.
3015 * Raw IP pcb support.
3021 * Some debug formatters and casts fixed.
3022 * Numereous fixes in PPP.
3026 * DEBUGF now is LWIP_DEBUGF
3027 * pbuf_dechain() has been re-enabled.
3028 * Mentioned the changed use of CVS branches in README.
3034 * Fixed pool pbuf memory leak in pbuf_alloc().
3035 Occured if not enough PBUF_POOL pbufs for a packet pbuf chain.
3036 Reported by Savin Zlobec.
3038 * PBUF_POOL chains had their tot_len field not set for non-first
3039 pbufs. Fixed in pbuf_alloc().
3043 * Added PPP stack contributed by Marc Boucher
3047 * Now drops short packets for ICMP/UDP/TCP protocols. More robust.
3049 * ARP queueuing now queues the latest packet instead of the first.
3050 This is the RFC recommended behaviour, but can be overridden in
3057 * TCP has been fixed to deal with the new use of the pbuf->ref
3060 * DHCP dhcp_inform() crash bug fixed.
3064 * Removed pbuf_pool_free_cache and pbuf_pool_alloc_cache. Also removed
3065 pbuf_refresh(). This has sped up pbuf pool operations considerably.
3066 Implemented by David Haas.
3072 * The packet buffer implementation has been enhanced to support
3073 zero-copy and copy-on-demand for packet buffers which have their
3074 payloads in application-managed memory.
3075 Implemented by David Haas.
3077 Use PBUF_REF to make a pbuf refer to RAM. lwIP will use zero-copy
3078 if an outgoing packet can be directly sent on the link, or perform
3079 a copy-on-demand when necessary.
3081 The application can safely assume the packet is sent, and the RAM
3082 is available to the application directly after calling udp_send()
3083 or similar function.
3087 * ARP_QUEUEING should now correctly work for all cases, including
3089 Implemented by Leon Woestenberg.
3093 * IP_ADDR_ANY is no longer a NULL pointer. Instead, it is a pointer
3094 to a '0.0.0.0' IP address.
3096 * The packet buffer implementation is changed. The pbuf->ref counter
3097 meaning has changed, and several pbuf functions have been
3098 adapted accordingly.
3100 * netif drivers have to be changed to set the hardware address length field
3101 that must be initialized correctly by the driver (hint: 6 for Ethernet MAC).
3102 See the contrib/ports/c16x cs8900 driver as a driver example.
3104 * netif's have a dhcp field that must be initialized to NULL by the driver.
3105 See the contrib/ports/c16x cs8900 driver as a driver example.
3107 (0.5.x) This file has been unmaintained up to 0.6.1. All changes are
3108 logged in CVS but have not been explained here.
3110 (0.5.3) Changes since version 0.5.2
3114 * memp_malloc(MEMP_API_MSG) could fail with multiple application
3115 threads because it wasn't protected by semaphores.
3119 * struct ip_addr now packed.
3121 * The name of the time variable in arp.c has been changed to ctime
3122 to avoid conflicts with the time() function.
3124 (0.5.2) Changes since version 0.5.1
3128 * A new TCP function, tcp_tmr(), now handles both TCP timers.
3132 * A bug in tcp_parseopt() could cause the stack to hang because of a
3133 malformed TCP option.
3135 * The address of new connections in the accept() function in the BSD
3136 socket library was not handled correctly.
3138 * pbuf_dechain() did not update the ->tot_len field of the tail.
3140 * Aborted TCP connections were not handled correctly in all
3145 * All protocol header structs are now packed.
3147 * The ->len field in the tcp_seg structure now counts the actual
3148 amount of data, and does not add one for SYN and FIN segments.
3150 (0.5.1) Changes since version 0.5.0
3154 * Possible to run as a user process under Linux.
3156 * Preliminary support for cross platform packed structs.
3158 * ARP timer now implemented.
3162 * TCP output queue length was badly initialized when opening
3165 * TCP delayed ACKs were not sent correctly.
3167 * Explicit initialization of BSS segment variables.
3169 * read() in BSD socket library could drop data.
3171 * Problems with memory alignment.
3173 * Situations when all TCP buffers were used could lead to
3176 * TCP MSS option wasn't parsed correctly.
3178 * Problems with UDP checksum calculation.
3180 * IP multicast address tests had endianess problems.
3182 * ARP requests had wrong destination hardware address.
3186 * struct eth_addr changed from u16_t[3] array to u8_t[6].
3188 * A ->linkoutput() member was added to struct netif.
3190 * TCP and UDP ->dest_* struct members where changed to ->remote_*.
3192 * ntoh* macros are now null definitions for big endian CPUs.
3194 (0.5.0) Changes since version 0.4.2
3198 * Redesigned operating system emulation layer to make porting easier.
3200 * Better control over TCP output buffers.
3202 * Documenation added.
3206 * Locking issues in buffer management.
3208 * Bugfixes in the sequential API.
3210 * IP forwarding could cause memory leakage. This has been fixed.
3214 * Directory structure somewhat changed; the core/ tree has been
3217 (0.4.2) Changes since version 0.4.1
3221 * Experimental ARP implementation added.
3223 * Skeleton Ethernet driver added.
3225 * Experimental BSD socket API library added.
3229 * In very intense situations, memory leakage could occur. This has
3234 * Variables named "data" and "code" have been renamed in order to
3235 avoid name conflicts in certain compilers.
3237 * Variable++ have in appliciable cases been translated to ++variable
3238 since some compilers generate better code in the latter case.
3240 (0.4.1) Changes since version 0.4
3244 * TCP: Connection attempts time out earlier than data
3245 transmissions. Nagle algorithm implemented. Push flag set on the
3246 last segment in a burst.
3248 * UDP: experimental support for UDP-Lite extensions.
3252 * TCP: out of order segments were in some cases handled incorrectly,
3253 and this has now been fixed. Delayed acknowledgements was broken
3254 in 0.4, has now been fixed. Binding to an address that is in use
3255 now results in an error. Reset connections sometimes hung an
3256 application; this has been fixed.
3258 * Checksum calculation sometimes failed for chained pbufs with odd
3259 lengths. This has been fixed.
3261 * API: a lot of bug fixes in the API. The UDP API has been improved
3262 and tested. Error reporting and handling has been
3263 improved. Logical flaws and race conditions for incoming TCP
3264 connections has been found and removed.
3266 * Memory manager: alignment issues. Reallocating memory sometimes
3267 failed, this has been fixed.
3269 * Generic library: bcopy was flawed and has been fixed.
3273 * API: all datatypes has been changed from generic ones such as
3274 ints, to specified ones such as u16_t. Functions that return
3275 errors now have the correct type (err_t).
3277 * General: A lot of code cleaned up and debugging code removed. Many
3278 portability issues have been fixed.
3280 * The license was changed; the advertising clause was removed.
3284 * Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri
3285 Kosunen, Mikael Caleres, and Frits Wilmink for reporting and
3288 (0.4) Changes since version 0.3.1
3290 * Memory management has been radically changed; instead of
3291 allocating memory from a shared heap, memory for objects that are
3292 rapidly allocated and deallocated is now kept in pools. Allocation
3293 and deallocation from those memory pools is very fast. The shared
3294 heap is still present but is used less frequently.
3296 * The memory, memory pool, and packet buffer subsystems now support
3297 4-, 2-, or 1-byte alignment.
3299 * "Out of memory" situations are handled in a more robust way.
3301 * Stack usage has been reduced.
3303 * Easier configuration of lwIP parameters such as memory usage,
3304 TTLs, statistics gathering, etc. All configuration parameters are
3305 now kept in a single header file "lwipopts.h".
3307 * The directory structure has been changed slightly so that all
3308 architecture specific files are kept under the src/arch
3311 * Error propagation has been improved, both in the protocol modules
3314 * The code for the RTXC architecture has been implemented, tested
3317 * Bugs have been found and corrected in the TCP, UDP, IP, API, and
3318 the Internet checksum modules.
3320 * Bugs related to porting between a 32-bit and a 16-bit architecture
3321 have been found and corrected.
3323 * The license has been changed slightly to conform more with the
3324 original BSD license, including the advertisement clause.
3326 (0.3.1) Changes since version 0.3
3328 * Fix of a fatal bug in the buffer management. Pbufs with allocated
3329 RAM never returned the RAM when the pbuf was deallocated.
3331 * TCP congestion control, window updates and retransmissions did not
3332 work correctly. This has now been fixed.
3334 * Bugfixes in the API.
3336 (0.3) Changes since version 0.2
3338 * New and improved directory structure. All include files are now
3339 kept in a dedicated include/ directory.
3341 * The API now has proper error handling. A new function,
3342 netconn_err(), now returns an error code for the connection in
3345 * Improvements in the memory management subsystem. The system now
3346 keeps a pointer to the lowest free memory block. A new function,
3347 mem_malloc2() tries to allocate memory once, and if it fails tries
3348 to free some memory and retry the allocation.
3350 * Much testing has been done with limited memory
3351 configurations. lwIP now does a better job when overloaded.
3353 * Some bugfixes and improvements to the buffer (pbuf) subsystem.
3355 * Many bugfixes in the TCP code:
3357 - Fixed a bug in tcp_close().
3359 - The TCP receive window was incorrectly closed when out of
3360 sequence segments was received. This has been fixed.
3362 - Connections are now timed-out of the FIN-WAIT-2 state.
3364 - The initial congestion window could in some cases be too
3365 large. This has been fixed.
3367 - The retransmission queue could in some cases be screwed up. This
3370 - TCP RST flag now handled correctly.
3372 - Out of sequence data was in some cases never delivered to the
3373 application. This has been fixed.
3375 - Retransmitted segments now contain the correct acknowledgment
3376 number and advertised window.
3378 - TCP retransmission timeout backoffs are not correctly computed
3379 (ala BSD). After a number of retransmissions, TCP now gives up
3382 * TCP connections now are kept on three lists, one for active
3383 connections, one for listening connections, and one for
3384 connections that are in TIME-WAIT. This greatly speeds up the fast
3385 timeout processing for sending delayed ACKs.
3387 * TCP now provides proper feedback to the application when a
3388 connection has been successfully set up.
3390 * More comments have been added to the code. The code has also been
3391 somewhat cleaned up.
3393 (0.2) Initial public release.