3 * TODO: The lwIP source code makes some invalid assumptions on processor
4 word-length, storage sizes and alignment. See the mailing lists for
5 problems with exoteric (/DSP) architectures showing these problems.
6 We still have to fix some of these issues neatly.
8 * TODO: the PPP code is broken in a few ways. There are namespace
9 collisions on BSD systems and many assumptions on word-length
10 (sizeof(int)). In ppp.c an assumption is made on the availability of
11 a thread subsystem. Either PPP needs to be moved to contrib/ports/???
12 or rearranged to be more generic.
18 * [Enter new changes just after this line - do not remove this line]
22 2010-01-26: Simon Goldschmidt
23 * snmp: Use memp pools for snmp instead of the heap; added 4 new pools.
25 2010-01-14: Simon Goldschmidt
26 * ppp.c/.h: Fixed bug #27856: PPP: Set netif link- and status-callback
27 by adding ppp_set_netif_statuscallback()/ppp_set_netif_linkcallback()
29 2010-01-13: Simon Goldschmidt
30 * mem.c: The heap now may be moved to user-defined memory by defining
31 LWIP_RAM_HEAP_POINTER as a void pointer to that memory's address
32 (patch #6966 and bug #26133)
34 2010-01-10: Simon Goldschmidt (Bill Auerbach)
35 * opt.h, memp.c: patch #6822 (Add option to place memory pools in
38 2010-01-10: Simon Goldschmidt
39 * init.c, igmp.c: patch #6463 (IGMP - Adding Random Delay): added define
40 LWIP_RAND() for lwip-wide randomization (to be defined in cc.h)
42 2009-12-31: Simon Goldschmidt
43 * tcpip.c, init.c, memp.c, sys.c, memp_std.h, sys.h, tcpip.h
44 added timers.c/.h: Separated timer implementation from semaphore/mbox
45 implementation, moved timer implementation to timers.c/.h, timers are
46 now only called from tcpip_thread or by explicitly checking them.
49 2009-12-27: Simon Goldschmidt
50 * opt.h, etharp.h/.c, init.c, tcpip.c: Added an additional option
51 LWIP_ETHERNET to support ethernet without ARP (necessary for pure PPPoE)
56 2010-01-25: Simon Goldschmidt
57 * snmp_structs.h, msg_in.c: Partly fixed bug #22070 (MIB_OBJECT_WRITE_ONLY
58 not implemented in SNMP): write-only or not-accessible are still
59 returned by getnext (though not by get)
61 2010-01-24: Simon Goldschmidt
62 * snmp: Renamed the private mib node from 'private' to 'mib_private' to
63 not use reserved C/C++ keywords
65 2010-01-23: Simon Goldschmidt
66 * sockets.c: Fixed bug #28716: select() returns 0 after waiting for less
69 2010-01-21: Simon Goldschmidt
70 * tcp.c, api_msg.c: Fixed bug #28651 (tcp_connect: no callbacks called
71 if tcp_enqueue fails) both in raw- and netconn-API
73 2010-01-19: Simon Goldschmidt
74 * api_msg.c: Fixed bug #27316: netconn: Possible deadlock in err_tcp
76 2010-01-18: Iordan Neshev/Simon Goldschmidt
77 * src/netif/ppp: reorganised PPP sourcecode to 2.3.11 including some
78 bugfix backports from 2.4.x.
80 2010-01-18: Simon Goldschmidt
81 * mem.c: Fixed bug #28679: mem_realloc calculates mem_stats wrong
83 2010-01-17: Simon Goldschmidt
84 * api_lib.c, api_msg.c, (api_msg.h, api.h, sockets.c, tcpip.c):
85 task #10102: "netconn: clean up conn->err threading issues" by adding
86 error return value to struct api_msg_msg
88 2010-01-17: Simon Goldschmidt
89 * api.h, api_lib.c, sockets.c: Changed netconn_recv() and netconn_accept()
90 to return err_t (bugs #27709 and #28087)
92 2010-01-14: Simon Goldschmidt
93 * ...: Use typedef for function prototypes throughout the stack.
95 2010-01-13: Simon Goldschmidt
96 * api_msg.h/.c, api_lib.c: Fixed bug #26672 (close connection when receive
97 window = 0) by correctly draining recvmbox/acceptmbox
99 2010-01-11: Simon Goldschmidt
100 * pap.c: Fixed bug #13315 (PPP PAP authentication can result in
101 erroneous callbacks) by copying the code from recent pppd
103 2010-01-10: Simon Goldschmidt
104 * raw.c: Fixed bug #28506 (raw_bind should filter received packets)
106 2010-01-10: Simon Goldschmidt
107 * tcp.h/.c: bug #28127 (remove call to tcp_output() from tcp_ack(_now)())
109 2010-01-08: Simon Goldschmidt
110 * sockets.c: Fixed bug #28519 (lwip_recvfrom bug with len > 65535)
112 2010-01-08: Simon Goldschmidt
113 * dns.c: Copy hostname for DNS_LOCAL_HOSTLIST_IS_DYNAMIC==1 since string
114 passed to dns_local_addhost() might be volatile
116 2010-01-07: Simon Goldschmidt
117 * timers.c, tcp.h: Call tcp_timer_needed() with NO_SYS==1, too
119 2010-01-06: Simon Goldschmidt
120 * netdb.h: Fixed bug #28496: missing include guards in netdb.h
122 2009-12-31: Simon Goldschmidt
123 * many ppp files: Reorganised PPP source code from ucip structure to pppd
124 structure to easily compare our code against the pppd code (around v2.3.1)
126 2009-12-27: Simon Goldschmidt
127 * tcp_in.c: Another fix for bug #28241 (ooseq processing) and adapted
135 2009-10-27 Simon Goldschmidt/Stephan Lesage
136 * netifapi.c/.h: Added netifapi_netif_set_addr()
138 2009-10-07 Simon Goldschmidt/Fabian Koch
139 * api_msg.c, netbuf.c/.h, opt.h: patch #6888: Patch for UDP Netbufs to
140 support dest-addr and dest-port (optional: LWIP_NETBUF_RECVINFO)
142 2009-08-26 Simon Goldschmidt/Simon Kallweit
143 * slipif.c/.h: bug #26397: SLIP polling support
145 2009-08-25 Simon Goldschmidt
146 * opt.h, etharp.h/.c: task #9033: Support IEEE 802.1q tagged frame (VLAN),
147 New configuration options ETHARP_SUPPORT_VLAN and ETHARP_VLAN_CHECK.
149 2009-08-25 Simon Goldschmidt
150 * ip_addr.h, netdb.c: patch #6900: added define ip_ntoa(struct ip_addr*)
152 2009-08-24 Jakob Stoklund Olesen
153 * autoip.c, dhcp.c, netif.c: patch #6725: Teach AutoIP and DHCP to respond
154 to netif_set_link_up().
156 2009-08-23 Simon Goldschmidt
157 * tcp.h/.c: Added function tcp_debug_state_str() to convert a tcp state
158 to a human-readable string.
162 2009-12-24: Kieran Mansley
163 * tcp_in.c Apply patches from Oleg Tyshev to improve OOS processing
166 2009-12-06: Simon Goldschmidt
167 * ppp.h/.c: Fixed bug #27079 (Yet another leak in PPP): outpacket_buf can
168 be statically allocated (like in ucip)
170 2009-12-04: Simon Goldschmidt (patch by Ioardan Neshev)
171 * pap.c: patch #6969: PPP: missing PAP authentication UNTIMEOUT
173 2009-12-03: Simon Goldschmidt
174 * tcp.h, tcp_in.c, tcp_out.c: Fixed bug #28106: dup ack for fast retransmit
175 could have non-zero length
177 2009-12-02: Simon Goldschmidt
178 * tcp_in.c: Fixed bug #27904: TCP sends too many ACKs: delay resetting
179 tcp_input_pcb until after calling the pcb's callbacks
181 2009-11-29: Simon Goldschmidt
182 * tcp_in.c: Fixed bug #28054: Two segments with FIN flag on the out-of-
183 sequence queue, also fixed PBUF_POOL leak in the out-of-sequence code
185 2009-11-29: Simon Goldschmidt
186 * pbuf.c: Fixed bug #28064: pbuf_alloc(PBUF_POOL) is not thread-safe by
187 queueing a call into tcpip_thread to free ooseq-bufs if the pool is empty
189 2009-11-26: Simon Goldschmidt
190 * tcp.h: Fixed bug #28098: Nagle can prevent fast retransmit from sending
193 2009-11-26: Simon Goldschmidt
194 * tcp.h, sockets.c: Fixed bug #28099: API required to disable Nagle
195 algorithm at PCB level
197 2009-11-22: Simon Goldschmidt
198 * tcp_out.c: Fixed bug #27905: FIN isn't combined with data on unsent
200 2009-11-22: Simon Goldschmidt (suggested by Bill Auerbach)
201 * tcp.c: tcp_alloc: prevent increasing stats.err for MEMP_TCP_PCB when
202 reusing time-wait pcb
204 2009-11-20: Simon Goldschmidt (patch by Albert Bartel)
205 * sockets.c: Fixed bug #28062: Data received directly after accepting
206 does not wake up select
208 2009-11-11: Simon Goldschmidt
209 * netdb.h: Fixed bug #27994: incorrect define for freeaddrinfo(addrinfo)
211 2009-10-30: Simon Goldschmidt
212 * opt.h: Increased default value for TCP_MSS to 536, updated default
213 value for TCP_WND to 4*TCP_MSS to keep delayed ACK working.
215 2009-10-28: Kieran Mansley
216 * tcp_in.c, tcp_out.c, tcp.h: re-work the fast retransmission code
217 to follow algorithm from TCP/IP Illustrated
219 2009-10-27: Kieran Mansley
220 * tcp_in.c: fix BUG#27445: grow cwnd with every duplicate ACK
222 2009-10-25: Simon Goldschmidt
223 * tcp.h: bug-fix in the TCP_EVENT_RECV macro (has to call tcp_recved if
224 pcb->recv is NULL to keep rcv_wnd correct)
226 2009-10-25: Simon Goldschmidt
227 * tcp_in.c: Fixed bug #26251: RST process in TIME_WAIT TCP state
229 2009-10-23: Simon Goldschmidt (David Empson)
230 * tcp.c: Fixed bug #27783: Silly window avoidance for small window sizes
232 2009-10-21: Simon Goldschmidt
233 * tcp_in.c: Fixed bug #27215: TCP sent() callback gives leading and
234 trailing 1 byte len (SYN/FIN)
236 2009-10-21: Simon Goldschmidt
237 * tcp_out.c: Fixed bug #27315: zero window probe and FIN
239 2009-10-19: Simon Goldschmidt
240 * dhcp.c/.h: Minor code simplification (don't store received pbuf, change
241 conditional code to assert where applicable), check pbuf length before
242 testing for valid reply
244 2009-10-19: Simon Goldschmidt
245 * dhcp.c: Removed most calls to udp_connect since they aren't necessary
246 when using udp_sendto_if() - always stay connected to IP_ADDR_ANY.
248 2009-10-16: Simon Goldschmidt
249 * ip.c: Fixed bug #27390: Source IP check in ip_input() causes it to drop
250 valid DHCP packets -> allow 0.0.0.0 as source address when LWIP_DHCP is
253 2009-10-15: Simon Goldschmidt (Oleg Tyshev)
254 * tcp_in.c: Fixed bug #27329: dupacks by unidirectional data transmit
256 2009-10-15: Simon Goldschmidt
257 * api_lib.c: Fixed bug #27709: conn->err race condition on netconn_recv()
260 2009-10-15: Simon Goldschmidt
261 * autoip.c: Fixed bug #27704: autoip starts with wrong address
262 LWIP_AUTOIP_CREATE_SEED_ADDR() returned address in host byte order instead
263 of network byte order
265 2009-10-11 Simon Goldschmidt (Jörg Kesten)
266 * tcp_out.c: Fixed bug #27504: tcp_enqueue wrongly concatenates segments
267 which are not consecutive when retransmitting unacked segments
269 2009-10-09 Simon Goldschmidt
270 * opt.h: Fixed default values of some stats to only be enabled if used
271 Fixes bug #27338: sys_stats is defined when NO_SYS = 1
273 2009-08-30 Simon Goldschmidt
274 * ip.c: Fixed bug bug #27345: "ip_frag() does not use the LWIP_NETIF_LOOPBACK
275 function" by checking for loopback before calling ip_frag
277 2009-08-25 Simon Goldschmidt
278 * dhcp.c: fixed invalid dependency to etharp_query if DHCP_DOES_ARP_CHECK==0
280 2009-08-23 Simon Goldschmidt
281 * ppp.c: bug #27078: Possible memory leak in pppInit()
283 2009-08-23 Simon Goldschmidt
284 * netdb.c, dns.c: bug #26657: DNS, if host name is "localhost", result
287 2009-08-23 Simon Goldschmidt
288 * opt.h, init.c: bug #26649: TCP fails when TCP_MSS > TCP_SND_BUF
289 Fixed wrong parenthesis, added check in init.c
291 2009-08-23 Simon Goldschmidt
292 * ppp.c: bug #27266: wait-state debug message in pppMain occurs every ms
294 2009-08-23 Simon Goldschmidt
295 * many ppp files: bug #27267: Added include to string.h where needed
297 2009-08-23 Simon Goldschmidt
298 * tcp.h: patch #6843: tcp.h macro optimization patch (for little endian)
305 2009-05-10 Simon Goldschmidt
306 * opt.h, sockets.c, pbuf.c, netbuf.h, pbuf.h: task #7013: Added option
307 LWIP_NETIF_TX_SINGLE_PBUF to try to create transmit packets from only
308 one pbuf to help MACs that don't support scatter-gather DMA.
310 2009-05-09 Simon Goldschmidt
311 * icmp.h, icmp.c: Shrinked ICMP code, added option to NOT check icoming
312 ECHO pbuf for size (just use it): LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN
314 2009-05-05 Simon Goldschmidt, Jakob Stoklund Olesen
315 * ip.h, ip.c: Added ip_current_netif() & ip_current_header() to receive
316 extended info about the currently received packet.
318 2009-04-27 Simon Goldschmidt
319 * sys.h: Made SYS_LIGHTWEIGHT_PROT and sys_now() work with NO_SYS=1
321 2009-04-25 Simon Goldschmidt
322 * mem.c, opt.h: Added option MEM_USE_POOLS_TRY_BIGGER_POOL to try the next
323 bigger malloc pool if one is empty (only usable with MEM_USE_POOLS).
325 2009-04-21 Simon Goldschmidt
326 * dns.c, init.c, dns.h, opt.h: task #7507, patch #6786: DNS supports static
327 hosts table. New configuration options DNS_LOCAL_HOSTLIST and
328 DNS_LOCAL_HOSTLIST_IS_DYNAMIC. Also, DNS_LOOKUP_LOCAL_EXTERN() can be defined
329 as an external function for lookup.
331 2009-04-15 Simon Goldschmidt
332 * dhcp.c: patch #6763: Global DHCP XID can be redefined to something more unique
334 2009-03-31 Kieran Mansley
335 * tcp.c, tcp_out.c, tcp_in.c, sys.h, tcp.h, opts.h: add support for
336 TCP timestamp options, off by default. Rework tcp_enqueue() to
337 take option flags rather than specified option data
339 2009-02-18 Simon Goldschmidt
340 * cc.h: Added printf formatter for size_t: SZT_F
342 2009-02-16 Simon Goldschmidt (patch by Rishi Khan)
343 * icmp.c, opt.h: patch #6539: (configurable) response to broadcast- and multicast
346 2009-02-12 Simon Goldschmidt
347 * init.h: Added LWIP_VERSION to get the current version of the stack
349 2009-02-11 Simon Goldschmidt (suggested by Gottfried Spitaler)
350 * opt.h, memp.h/.c: added MEMP_MEM_MALLOC to use mem_malloc/mem_free instead
351 of the pool allocator (can save code size with MEM_LIBC_MALLOC if libc-malloc
354 2009-01-28 Jonathan Larmour (suggested by Bill Bauerbach)
355 * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h: inet_chksum_pseudo_partial()
356 is only used by UDPLITE at present, so conditionalise it.
358 2008-12-03 Simon Goldschmidt (base on patch from Luca Ceresoli)
359 * autoip.c: checked in (slightly modified) patch #6683: Customizable AUTOIP
360 "seed" address. This should reduce AUTOIP conflicts if
361 LWIP_AUTOIP_CREATE_SEED_ADDR is overridden.
363 2008-10-02 Jonathan Larmour and Rishi Khan
364 * sockets.c (lwip_accept): Return EWOULDBLOCK if would block on non-blocking
367 2008-06-30 Simon Goldschmidt
368 * mem.c, opt.h, stats.h: fixed bug #21433: Calling mem_free/pbuf_free from
369 interrupt context isn't safe: LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT allows
370 mem_free to run between mem_malloc iterations. Added illegal counter for
373 2008-06-27 Simon Goldschmidt
374 * stats.h/.c, some other files: patch #6483: stats module improvement:
375 Added defines to display each module's statistic individually, added stats
376 defines for MEM, MEMP and SYS modules, removed (unused) rexmit counter.
378 2008-06-17 Simon Goldschmidt
379 * err.h: patch #6459: Made err_t overridable to use a more efficient type
380 (define LWIP_ERR_T in cc.h)
382 2008-06-17 Simon Goldschmidt
383 * slipif.c: patch #6480: Added a configuration option for slipif for symmetry
386 2008-06-17 Simon Goldschmidt (patch by Luca Ceresoli)
387 * netif.c, loopif.c, ip.c, netif.h, loopif.h, opt.h: Checked in slightly
388 modified version of patch # 6370: Moved loopif code to netif.c so that
389 loopback traffic is supported on all netifs (all local IPs).
390 Added option to limit loopback packets for each netifs.
394 2009-08-12 Kieran Mansley
395 * tcp_in.c, tcp.c: Fix bug #27209: handle trimming of segments when
396 out of window or out of order properly
398 2009-08-12 Kieran Mansley
399 * tcp_in.c: Fix bug #27199: use snd_wl2 instead of snd_wl1
401 2009-07-28 Simon Goldschmidt
402 * mem.h: Fixed bug #27105: "realloc() cannot replace mem_realloc()"s
404 2009-07-27 Kieran Mansley
405 * api.h api_msg.h netdb.h sockets.h: add missing #include directives
407 2009-07-09 Kieran Mansley
408 * api_msg.c, sockets.c, api.h: BUG23240 use signed counters for
409 recv_avail and don't increment counters until message successfully
412 2009-06-25 Kieran Mansley
413 * api_msg.c api.h: BUG26722: initialise netconn write variables
416 2009-06-25 Kieran Mansley
417 * tcp.h: BUG26879: set ret value in TCP_EVENT macros when function is not set
419 2009-06-25 Kieran Mansley
420 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: BUG26301 and BUG26267: correct
421 simultaneous close behaviour, and make snd_nxt have the same meaning
424 2009-05-12 Simon Goldschmidt
425 * etharp.h, etharp.c, netif.c: fixed bug #26507: "Gratuitous ARP depends on
426 arp_table / uses etharp_query" by adding etharp_gratuitous()
428 2009-05-12 Simon Goldschmidt
429 * ip.h, ip.c, igmp.c: bug #26487: Added ip_output_if_opt that can add IP options
430 to the IP header (used by igmp_ip_output_if)
432 2009-05-06 Simon Goldschmidt
433 * inet_chksum.c: On little endian architectures, use LWIP_PLATFORM_HTONS (if
434 defined) for SWAP_BYTES_IN_WORD to speed up checksumming.
436 2009-05-05 Simon Goldschmidt
437 * sockets.c: bug #26405: Prematurely released semaphore causes lwip_select()
440 2009-05-04 Simon Goldschmidt
441 * init.c: snmp was not initialized in lwip_init()
443 2009-05-04 Frédéric Bernon
444 * dhcp.c, netbios.c: Changes if IP_SOF_BROADCAST is enabled.
446 2009-05-03 Simon Goldschmidt
447 * tcp.h: bug #26349: Nagle algorithm doesn't send although segment is full
448 (and unsent->next == NULL)
450 2009-05-02 Simon Goldschmidt
451 * tcpip.h, tcpip.c: fixed tcpip_untimeout (does not need the time, broken after
452 1.3.0 in CVS only) - fixes compilation of ppp_oe.c
454 2009-05-02 Simon Goldschmidt
455 * msg_in.c: fixed bug #25636: SNMPSET value is ignored for integer fields
457 2009-05-01 Simon Goldschmidt
458 * pap.c: bug #21680: PPP upap_rauthnak() drops legal NAK packets
460 2009-05-01 Simon Goldschmidt
461 * ppp.c: bug #24228: Memory corruption with PPP and DHCP
463 2009-04-29 Frédéric Bernon
464 * raw.c, udp.c, init.c, opt.h, ip.h, sockets.h: bug #26309: Implement the
465 SO(F)_BROADCAST filter for all API layers. Avoid the unindented reception
466 of broadcast packets even when this option wasn't set. Port maintainers
467 which want to enable this filter have to set IP_SOF_BROADCAST=1 in opt.h.
468 If you want this option also filter broadcast on recv operations, you also
469 have to set IP_SOF_BROADCAST_RECV=1 in opt.h.
471 2009-04-28 Simon Goldschmidt, Jakob Stoklund Olesen
472 * dhcp.c: patch #6721, bugs #25575, #25576: Some small fixes to DHCP and
473 DHCP/AUTOIP cooperation
475 2009-04-25 Simon Goldschmidt, Oleg Tyshev
476 * tcp_out.c: bug #24212: Deadlocked tcp_retransmit due to exceeded pcb->cwnd
477 Fixed by sorting the unsent and unacked queues (segments are inserted at the
478 right place in tcp_output and tcp_rexmit).
480 2009-04-25 Simon Goldschmidt
481 * memp.c, mem.c, memp.h, mem_std.h: bug #26213 "Problem with memory allocation
482 when debugging": memp_sizes contained the wrong sizes (including sanity
483 regions); memp pools for MEM_USE_POOLS were too small
485 2009-04-24 Simon Goldschmidt, Frédéric Bernon
486 * inet.c: patch #6765: Fix a small problem with the last changes (incorrect
487 behavior, with with ip address string not ended by a '\0', a space or a
490 2009-04-19 Simon Goldschmidt
491 * rawapi.txt: Fixed bug #26069: Corrected documentation: if tcp_connect fails,
492 pcb->err is called, not pcb->connected (with an error code).
494 2009-04-19 Simon Goldschmidt
495 * tcp_out.c: Fixed bug #26236: "TCP options (timestamp) don't work with
496 no-copy-tcpwrite": deallocate option data, only concat segments with same flags
498 2009-04-19 Simon Goldschmidt
499 * tcp_out.c: Fixed bug #25094: "Zero-length pbuf" (options are now allocated
500 in the header pbuf, not the data pbuf)
502 2009-04-18 Simon Goldschmidt
503 * api_msg.c: fixed bug #25695: Segmentation fault in do_writemore()
505 2009-04-15 Simon Goldschmidt
506 * sockets.c: tried to fix bug #23559: lwip_recvfrom problem with tcp
508 2009-04-15 Simon Goldschmidt
509 * dhcp.c: task #9192: mem_free of dhcp->options_in and dhcp->msg_in
511 2009-04-15 Simon Goldschmidt
512 * ip.c, ip6.c, tcp_out.c, ip.h: patch #6808: Add a utility function
513 ip_hinted_output() (for smaller code mainly)
515 2009-04-15 Simon Goldschmidt
516 * inet.c: patch #6765: Supporting new line characters in inet_aton()
518 2009-04-15 Simon Goldschmidt
519 * dhcp.c: patch #6764: DHCP rebind and renew did not send hostnam option;
520 Converted constant OPTION_MAX_MSG_SIZE to netif->mtu, check if netif->mtu
521 is big enough in dhcp_start
523 2009-04-15 Simon Goldschmidt
524 * netbuf.c: bug #26027: netbuf_chain resulted in pbuf memory leak
526 2009-04-15 Simon Goldschmidt
527 * sockets.c, ppp.c: bug #25763: corrected 4 occurrences of SMEMCPY to MEMCPY
529 2009-04-15 Simon Goldschmidt
530 * sockets.c: bug #26121: set_errno can be overridden
532 2009-04-09 Kieran Mansley (patch from Luca Ceresoli <lucaceresoli>)
533 * init.c, opt.h: Patch#6774 TCP_QUEUE_OOSEQ breaks compilation when
536 2009-04-09 Kieran Mansley (patch from Roy Lee <roylee17>)
537 * tcp.h: Patch#6802 Add do-while-clauses to those function like
540 2009-03-31 Kieran Mansley
541 * tcp.c, tcp_in.c, tcp_out.c, tcp.h, opt.h: Rework the way window
542 updates are calculated and sent (BUG20515)
544 * tcp_in.c: cope with SYN packets received during established states,
545 and retransmission of initial SYN.
547 * tcp_out.c: set push bit correctly when tcp segments are merged
549 2009-03-27 Kieran Mansley
550 * tcp_out.c set window correctly on probes (correcting change made
553 2009-03-26 Kieran Mansley
554 * tcp.c, tcp_in.c, tcp.h: add tcp_abandon() to cope with dropping
555 connections where no reset required (bug #25622)
557 * tcp_out.c: set TCP_ACK flag on keepalive and zero window probes
560 2009-02-18 Simon Goldschmidt (Jonathan Larmour and Bill Auerbach)
561 * ip_frag.c: patch #6528: the buffer used for IP_FRAG_USES_STATIC_BUF could be
562 too small depending on MEM_ALIGNMENT
564 2009-02-16 Simon Goldschmidt
565 * sockets.h/.c, api_*.h/.c: fixed arguments of socket functions to match the standard;
566 converted size argument of netconn_write to 'size_t'
568 2009-02-16 Simon Goldschmidt
569 * tcp.h, tcp.c: fixed bug #24440: TCP connection close problem on 64-bit host
570 by moving accept callback function pointer to TCP_PCB_COMMON
572 2009-02-12 Simon Goldschmidt
573 * dhcp.c: fixed bug #25345 (DHCPDECLINE is sent with "Maximum message size"
576 2009-02-11 Simon Goldschmidt
577 * dhcp.c: fixed bug #24480 (releasing old udp_pdb and pbuf in dhcp_start)
579 2009-02-11 Simon Goldschmidt
580 * opt.h, api_msg.c: added configurable default valud for netconn->recv_bufsize:
581 RECV_BUFSIZE_DEFAULT (fixes bug #23726: pbuf pool exhaustion on slow recv())
583 2009-02-10 Simon Goldschmidt
584 * tcp.c: fixed bug #25467: Listen backlog is not reset on timeout in SYN_RCVD:
585 Accepts_pending is decrease on a corresponding listen pcb when a connection
586 in state SYN_RCVD is close.
588 2009-01-28 Jonathan Larmour
589 * pbuf.c: reclaim pbufs from TCP out-of-sequence segments if we run
592 2008-12-19 Simon Goldschmidt
593 * many files: patch #6699: fixed some warnings on platform where sizeof(int) == 2
595 2008-12-10 Tamas Somogyi, Frédéric Bernon
596 * sockets.c: fixed bug #25051: lwip_recvfrom problem with udp: fromaddr and
597 port uses deleted netbuf.
599 2008-10-18 Simon Goldschmidt
600 * tcp_in.c: fixed bug ##24596: Vulnerability on faulty TCP options length
603 2008-10-15 Simon Goldschmidt
604 * ip_frag.c: fixed bug #24517: IP reassembly crashes on unaligned IP headers
605 by packing the struct ip_reass_helper.
607 2008-10-03 David Woodhouse, Jonathan Larmour
608 * etharp.c (etharp_arp_input): Fix type aliasing problem copying ip address.
610 2008-10-02 Jonathan Larmour
611 * dns.c: Hard-code structure sizes, to avoid issues on some compilers where
614 2008-09-30 Jonathan Larmour
615 * sockets.c (lwip_accept): check addr isn't NULL. If it's valid, do an
616 assertion check that addrlen isn't NULL.
618 2008-09-30 Jonathan Larmour
619 * tcp.c: Fix bug #24227, wrong error message in tcp_bind.
621 2008-08-26 Simon Goldschmidt
622 * inet.h, ip_addr.h: fixed bug #24132: Cross-dependency between ip_addr.h and
623 inet.h -> moved declaration of struct in_addr from ip_addr.h to inet.h
625 2008-08-14 Simon Goldschmidt
626 * api_msg.c: fixed bug #23847: do_close_internal references freed memory (when
627 tcp_close returns != ERR_OK)
629 2008-07-08 Frédéric Bernon
630 * stats.h: Fix some build bugs introduced with patch #6483 (missing some parameters
631 in macros, mainly if MEM_STATS=0 and MEMP_STATS=0).
633 2008-06-24 Jonathan Larmour
634 * tcp_in.c: Fix for bug #23693 as suggested by Art R. Ensure cseg is unused
635 if tcp_seg_copy fails.
637 2008-06-17 Simon Goldschmidt
638 * inet_chksum.c: Checked in some ideas of patch #6460 (loop optimizations)
639 and created defines for swapping bytes and folding u32 to u16.
641 2008-05-30 Kieran Mansley
642 * tcp_in.c Remove redundant "if" statement, and use real rcv_wnd
643 rather than rcv_ann_wnd when deciding if packets are in-window.
644 Contributed by <arasmussen@consultant.datasys.swri.edu>
646 2008-05-30 Kieran Mansley
647 * mem.h: Fix BUG#23254. Change macro definition of mem_* to allow
648 passing as function pointers when MEM_LIBC_MALLOC is defined.
650 2008-05-09 Jonathan Larmour
651 * err.h, err.c, sockets.c: Fix bug #23119: Reorder timeout error code to
652 stop it being treated as a fatal error.
654 2008-04-15 Simon Goldschmidt
655 * dhcp.c: fixed bug #22804: dhcp_stop doesn't clear NETIF_FLAG_DHCP
658 2008-03-27 Simon Goldschmidt
659 * mem.c, tcpip.c, tcpip.h, opt.h: fixed bug #21433 (Calling mem_free/pbuf_free
660 from interrupt context isn't safe): set LWIP_USE_HEAP_FROM_INTERRUPT to 1
661 in lwipopts.h or use pbuf_free_callback(p)/mem_free_callback(m) to free pbufs
662 or heap memory from interrupt context
664 2008-03-26 Simon Goldschmidt
665 * tcp_in.c, tcp.c: fixed bug #22249: division by zero could occur if a remote
666 host sent a zero mss as TCP option.
673 2008-03-10 Jonathan Larmour
674 * inet_chksum.c: Allow choice of one of the sample algorithms to be
675 made from lwipopts.h. Fix comment on how to override LWIP_CHKSUM.
677 2008-01-22 Frédéric Bernon
678 * tcp.c, tcp_in.c, tcp.h, opt.h: Rename LWIP_CALCULATE_EFF_SEND_MSS in
679 TCP_CALCULATE_EFF_SEND_MSS to have coherent TCP options names.
681 2008-01-14 Frédéric Bernon
682 * rawapi.txt, api_msg.c, tcp.c, tcp_in.c, tcp.h: changes for task #7675 "Enable
683 to refuse data on a TCP_EVENT_RECV call". Important, behavior changes for the
684 tcp_recv callback (see rawapi.txt).
686 2008-01-14 Frédéric Bernon, Marc Chaland
687 * ip.c: Integrate patch #6369" ip_input : checking before realloc".
689 2008-01-12 Frédéric Bernon
690 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
691 netconn::sem per netconn::op_completed like suggested for the task #7490
692 "Add return value to sys_mbox_post".
694 2008-01-12 Frédéric Bernon
695 * api_msg.c, opt.h: replace DEFAULT_RECVMBOX_SIZE per DEFAULT_TCP_RECVMBOX_SIZE,
696 DEFAULT_UDP_RECVMBOX_SIZE and DEFAULT_RAW_RECVMBOX_SIZE (to optimize queues
697 sizes), like suggested for the task #7490 "Add return value to sys_mbox_post".
699 2008-01-10 Frédéric Bernon
700 * tcpip.h, tcpip.c: add tcpip_callback_with_block function for the task #7490
701 "Add return value to sys_mbox_post". tcpip_callback is always defined as
702 "blocking" ("block" parameter = 1).
704 2008-01-10 Frédéric Bernon
705 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
706 netconn::mbox (sys_mbox_t) per netconn::sem (sys_sem_t) for the task #7490
707 "Add return value to sys_mbox_post".
709 2008-01-05 Frédéric Bernon
710 * sys_arch.txt, api.h, api_lib.c, api_msg.h, api_msg.c, tcpip.c, sys.h, opt.h:
711 Introduce changes for task #7490 "Add return value to sys_mbox_post" with some
712 modifications in the sys_mbox api: sys_mbox_new take a "size" parameters which
713 indicate the number of pointers query by the mailbox. There is three defines
714 in opt.h to indicate sizes for tcpip::mbox, netconn::recvmbox, and for the
715 netconn::acceptmbox. Port maintainers, you can decide to just add this new
716 parameter in your implementation, but to ignore it to keep the previous behavior.
717 The new sys_mbox_trypost function return a value to know if the mailbox is
718 full or if the message is posted. Take a look to sys_arch.txt for more details.
719 This new function is used in tcpip_input (so, can be called in an interrupt
720 context since the function is not blocking), and in recv_udp and recv_raw.
722 2008-01-04 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
723 * rawapi.txt, api.h, api_lib.c, api_msg.h, api_msg.c, sockets.c, tcp.h, tcp.c,
724 tcp_in.c, init.c, opt.h: rename backlog options with TCP_ prefix, limit the
725 "backlog" parameter in an u8_t, 0 is interpreted as "smallest queue", add
726 documentation in the rawapi.txt file.
728 2007-12-31 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
729 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Add TCP persist timer
731 2007-12-31 Frédéric Bernon, Luca Ceresoli
732 * autoip.c, etharp.c: ip_addr.h: Integrate patch #6348: "Broadcast ARP packets
733 in autoip". The change in etharp_raw could be removed, since all calls to
734 etharp_raw use ethbroadcast for the "ethdst_addr" parameter. But it could be
737 2007-12-30 Frédéric Bernon, Tom Evans
738 * ip.c: Fix bug #21846 "LwIP doesn't appear to perform any IP Source Address
739 Filtering" reported by Tom Evans.
741 2007-12-21 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
742 * tcp.h, opt.h, api.h, api_msg.h, tcp.c, tcp_in.c, api_lib.c, api_msg.c,
743 sockets.c, init.c: task #7252: Implement TCP listen backlog: Warning: raw API
744 applications have to call 'tcp_accepted(pcb)' in their accept callback to
745 keep accepting new connections.
747 2007-12-13 Frédéric Bernon
748 * api_msg.c, err.h, err.c, sockets.c, dns.c, dns.h: replace "enum dns_result"
749 by err_t type. Add a new err_t code "ERR_INPROGRESS".
751 2007-12-12 Frédéric Bernon
752 * dns.h, dns.c, opt.h: move DNS options to the "right" place. Most visibles
753 are the one which have ram usage.
755 2007-12-05 Frédéric Bernon
756 * netdb.c: add a LWIP_DNS_API_HOSTENT_STORAGE option to decide to use a static
757 set of variables (=0) or a local one (=1). In this last case, your port should
758 provide a function "struct hostent* sys_thread_hostent( struct hostent* h)"
759 which have to do a copy of "h" and return a pointer ont the "per-thread" copy.
761 2007-12-03 Simon Goldschmidt
762 * ip.c: ip_input: check if a packet is for inp first before checking all other
763 netifs on netif_list (speeds up packet receiving in most cases)
765 2007-11-30 Simon Goldschmidt
766 * udp.c, raw.c: task #7497: Sort lists (pcb, netif, ...) for faster access
767 UDP: move a (connected) pcb selected for input to the front of the list of
768 pcbs so that it is found faster next time. Same for RAW pcbs that have eaten
771 2007-11-28 Simon Goldschmidt
772 * etharp.c, stats.c, stats.h, opt.h: Introduced ETHARP_STATS
774 2007-11-25 Simon Goldschmidt
775 * dhcp.c: dhcp_unfold_reply() uses pbuf_copy_partial instead of its own copy
778 2007-11-24 Simon Goldschmidt
779 * netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c
780 to the new file netdb.c; included lwip_getaddrinfo.
782 2007-11-21 Simon Goldschmidt
783 * tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
784 based on the MTU of the netif used to send. Enabled by default. Disable by
785 setting LWIP_CALCULATE_EFF_SEND_MSS to 0. This fixes bug #21492.
787 2007-11-19 Frédéric Bernon
788 * api_msg.c, dns.h, dns.c: Implement DNS_DOES_NAME_CHECK option (check if name
789 received match the name query), implement DNS_USES_STATIC_BUF (the place where
790 copy dns payload to parse the response), return an error if there is no place
791 for a new query, and fix some minor problems.
793 2007-11-16 Simon Goldschmidt
794 * new files: ipv4/inet.c, ipv4/inet_chksum.c, ipv6/inet6.c
795 removed files: core/inet.c, core/inet6.c
796 Moved inet files into ipv4/ipv6 directory; splitted inet.c/inet.h into
797 inet and chksum part; changed includes in all lwIP files as appropriate
799 2007-11-16 Simon Goldschmidt
800 * api.h, api_msg.h, api_lib.c, api_msg.c, socket.h, socket.c: Added sequential
801 dns resolver function for netconn api (netconn_gethostbyname) and socket api
802 (gethostbyname/gethostbyname_r).
804 2007-11-15 Jim Pettinato, Frédéric Bernon
805 * opt.h, init.c, tcpip.c, dhcp.c, dns.h, dns.c: add DNS client for simple name
806 requests with RAW api interface. Initialization is done in lwip_init() with
807 build time options. DNS timer is added in tcpip_thread context. DHCP can set
808 DNS server ip addresses when options are received. You need to set LWIP_DNS=1
809 in your lwipopts.h file (LWIP_DNS=0 in opt.h). DNS_DEBUG can be set to get
810 some traces with LWIP_DEBUGF. Sanity check have been added. There is a "todo"
811 list with points to improve.
813 2007-11-06 Simon Goldschmidt
814 * opt.h, mib2.c: Patch #6215: added ifAdminStatus write support (if explicitly
815 enabled by defining SNMP_SAFE_REQUESTS to 0); added code to check link status
816 for ifOperStatus if LWIP_NETIF_LINK_CALLBACK is defined.
818 2007-11-06 Simon Goldschmidt
819 * api.h, api_msg.h and dependent files: Task #7410: Removed the need to include
820 core header files in api.h (ip/tcp/udp/raw.h) to hide the internal
821 implementation from netconn api applications.
823 2007-11-03 Frédéric Bernon
824 * api.h, api_lib.c, api_msg.c, sockets.c, opt.h: add SO_RCVBUF option for UDP &
825 RAW netconn. You need to set LWIP_SO_RCVBUF=1 in your lwipopts.h (it's disabled
826 by default). Netconn API users can use the netconn_recv_bufsize macro to access
827 it. This is a first release which have to be improve for TCP. Note it used the
828 netconn::recv_avail which need to be more "thread-safe" (note there is already
829 the problem for FIONREAD with lwip_ioctl/ioctlsocket).
831 2007-11-01 Frédéric Bernon, Marc Chaland
832 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, tcp.h, tcp_out.c:
833 Integrate "patch #6250 : MSG_MORE flag for send". MSG_MORE is used at socket api
834 layer, NETCONN_MORE at netconn api layer, and TCP_WRITE_FLAG_MORE at raw api
835 layer. This option enable to delayed TCP PUSH flag on multiple "write" calls.
836 Note that previous "copy" parameter for "write" APIs is now called "apiflags".
838 2007-10-24 Frédéric Bernon
839 * api.h, api_lib.c, api_msg.c: Add macro API_EVENT in the same spirit than
840 TCP_EVENT_xxx macros to get a code more readable. It could also help to remove
841 some code (like we have talk in "patch #5919 : Create compile switch to remove
842 select code"), but it could be done later.
844 2007-10-08 Simon Goldschmidt
845 * many files: Changed initialization: many init functions are not needed any
846 more since we now rely on the compiler initializing global and static
849 2007-10-06 Simon Goldschmidt
850 * ip_frag.c, memp.c, mib2.c, ip_frag.h, memp_std.h, opt.h: Changed IP_REASSEMBLY
851 to enqueue the received pbufs so that multiple packets can be reassembled
852 simultaneously and no static reassembly buffer is needed.
854 2007-10-05 Simon Goldschmidt
855 * tcpip.c, etharp.h, etharp.c: moved ethernet_input from tcpip.c to etharp.c so
856 all netifs (or ports) can use it.
858 2007-10-05 Frédéric Bernon
859 * netifapi.h, netifapi.c: add function netifapi_netif_set_default. Change the
860 common function to reduce a little bit the footprint (for all functions using
861 only the "netif" parameter).
863 2007-10-03 Frédéric Bernon
864 * netifapi.h, netifapi.c: add functions netifapi_netif_set_up, netifapi_netif_set_down,
865 netifapi_autoip_start and netifapi_autoip_stop. Use a common function to reduce
866 a little bit the footprint (for all functions using only the "netif" parameter).
868 2007-09-15 Frédéric Bernon
869 * udp.h, udp.c, sockets.c: Changes for "#20503 IGMP Improvement". Add IP_MULTICAST_IF
870 option in socket API, and a new field "multicast_ip" in "struct udp_pcb" (for
871 netconn and raw API users), only if LWIP_IGMP=1. Add getsockopt processing for
872 IP_MULTICAST_TTL and IP_MULTICAST_IF.
874 2007-09-10 Frédéric Bernon
875 * snmp.h, mib2.c: enable to remove SNMP timer (which consumne several cycles
876 even when it's not necessary). snmp_agent.txt tell to call snmp_inc_sysuptime()
877 each 10ms (but, it's intrusive if you use sys_timeout feature). Now, you can
878 decide to call snmp_add_sysuptime(100) each 1000ms (which is bigger "step", but
879 call to a lower frequency). Or, you can decide to not call snmp_inc_sysuptime()
880 or snmp_add_sysuptime(), and to define the SNMP_GET_SYSUPTIME(sysuptime) macro.
881 This one is undefined by default in mib2.c. SNMP_GET_SYSUPTIME is called inside
882 snmp_get_sysuptime(u32_t *value), and enable to change "sysuptime" value only
883 when it's queried (any direct call to "sysuptime" is changed by a call to
886 2007-09-09 Frédéric Bernon, Bill Florac
887 * igmp.h, igmp.c, netif.h, netif.c, ip.c: To enable to have interfaces with IGMP,
888 and others without it, there is a new NETIF_FLAG_IGMP flag to set in netif->flags
889 if you want IGMP on an interface. igmp_stop() is now called inside netif_remove().
890 igmp_report_groups() is now called inside netif_set_link_up() (need to have
891 LWIP_NETIF_LINK_CALLBACK=1) to resend reports once the link is up (avoid to wait
892 the next query message to receive the matching multicast streams).
894 2007-09-08 Frédéric Bernon
895 * sockets.c, ip.h, api.h, tcp.h: declare a "struct ip_pcb" which only contains
896 IP_PCB. Add in the netconn's "pcb" union a "struct ip_pcb *ip;" (no size change).
897 Use this new field to access to common pcb fields (ttl, tos, so_options, etc...).
898 Enable to access to these fields with LWIP_TCP=0.
900 2007-09-05 Frédéric Bernon
901 * udp.c, ipv4/icmp.c, ipv4/ip.c, ipv6/icmp.c, ipv6/ip6.c, ipv4/icmp.h,
902 ipv6/icmp.h, opt.h: Integrate "task #7272 : LWIP_ICMP option". The new option
903 LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default).
904 Be careful, disabling ICMP make your product non-compliant to RFC1122, but
905 help to reduce footprint, and to reduce "visibility" on the Internet.
907 2007-09-05 Frédéric Bernon, Bill Florac
908 * opt.h, sys.h, tcpip.c, slipif.c, ppp.c, sys_arch.txt: Change parameters list
909 for sys_thread_new (see "task #7252 : Create sys_thread_new_ex()"). Two new
910 parameters have to be provided: a task name, and a task stack size. For this
911 one, since it's platform dependant, you could define the best one for you in
912 your lwipopts.h. For port maintainers, you can just add these new parameters
913 in your sys_arch.c file, and but it's not mandatory, use them in your OS
916 2007-09-05 Frédéric Bernon
917 * inet.c, autoip.c, msg_in.c, msg_out.c, init.c: Move some build time checkings
918 inside init.c for task #7142 "Sanity check user-configurable values".
920 2007-09-04 Frédéric Bernon, Bill Florac
921 * igmp.h, igmp.c, memp_std.h, memp.c, init.c, opt.h: Replace mem_malloc call by
922 memp_malloc, and use a new MEMP_NUM_IGMP_GROUP option (see opt.h to define the
923 value). It will avoid potential fragmentation problems, use a counter to know
924 how many times a group is used on an netif, and free it when all applications
925 leave it. MEMP_NUM_IGMP_GROUP got 8 as default value (and init.c got a sanity
926 check if LWIP_IGMP!=0).
928 2007-09-03 Frédéric Bernon
929 * igmp.h, igmp.c, sockets.c, api_msg.c: Changes for "#20503 IGMP Improvement".
930 Initialize igmp_mac_filter to NULL in netif_add (this field should be set in
931 the netif's "init" function). Use the "imr_interface" field (for socket layer)
932 and/or the "interface" field (for netconn layer), for join/leave operations.
933 The igmp_join/leavegroup first parameter change from a netif to an ipaddr.
934 This field could be a netif's ipaddr, or "any" (same meaning than ip_addr_isany).
936 2007-08-30 Frédéric Bernon
937 * Add netbuf.h, netbuf.c, Change api.h, api_lib.c: #7249 "Split netbuf functions
938 from api/api_lib". Now netbuf API is independant of netconn, and can be used
939 with other API (application based on raw API, or future "socket2" API). Ports
940 maintainers just have to add src/api/netbuf.c in their makefile/projects.
942 2007-08-30 Frédéric Bernon, Jonathan Larmour
943 * init.c: Add first version of lwip_sanity_check for task #7142 "Sanity check
944 user-configurable values".
946 2007-08-29 Frédéric Bernon
947 * igmp.h, igmp.c, tcpip.c, init.c, netif.c: change igmp_init and add igmp_start.
948 igmp_start is call inside netif_add. Now, igmp initialization is in the same
949 spirit than the others modules. Modify some IGMP debug traces.
951 2007-08-29 Frédéric Bernon
952 * Add init.h, init.c, Change opt.h, tcpip.c: Task #7213 "Add a lwip_init function"
953 Add lwip_init function to regroup all modules initializations, and to provide
954 a place to add code for task #7142 "Sanity check user-configurable values".
955 Ports maintainers should remove direct initializations calls from their code,
956 and add init.c in their makefiles. Note that lwip_init() function is called
957 inside tcpip_init, but can also be used by raw api users since all calls are
958 disabled when matching options are disabled. Also note that their is new options
959 in opt.h, you should configure in your lwipopts.h (they are enabled per default).
961 2007-08-26 Marc Boucher
962 * api_msg.c: do_close_internal(): Reset the callbacks and arg (conn) to NULL
963 since they can under certain circumstances be called with an invalid conn
964 pointer after the connection has been closed (and conn has been freed).
966 2007-08-25 Frédéric Bernon (Artem Migaev's Patch)
967 * netif.h, netif.c: Integrate "patch #6163 : Function to check if link layer is up".
968 Add a netif_is_link_up() function if LWIP_NETIF_LINK_CALLBACK option is set.
970 2007-08-22 Frédéric Bernon
971 * netif.h, netif.c, opt.h: Rename LWIP_NETIF_CALLBACK in LWIP_NETIF_STATUS_CALLBACK
972 to be coherent with new LWIP_NETIF_LINK_CALLBACK option before next release.
974 2007-08-22 Frédéric Bernon
975 * tcpip.h, tcpip.c, ethernetif.c, opt.h: remove options ETHARP_TCPIP_INPUT &
976 ETHARP_TCPIP_ETHINPUT, now, only "ethinput" code is supported, even if the
977 name is tcpip_input (we keep the name of 1.2.0 function).
979 2007-08-17 Jared Grubb
980 * memp_std.h, memp.h, memp.c, mem.c, stats.c: (Task #7136) Centralize mempool
981 settings into new memp_std.h and optional user file lwippools.h. This adds
982 more dynamic mempools, and allows the user to create an arbitrary number of
983 mempools for mem_malloc.
985 2007-08-16 Marc Boucher
986 * api_msg.c: Initialize newconn->state to NETCONN_NONE in accept_function;
987 otherwise it was left to NETCONN_CLOSE and sent_tcp() could prematurely
988 close the connection.
990 2007-08-16 Marc Boucher
991 * sockets.c: lwip_accept(): check netconn_peer() error return.
993 2007-08-16 Marc Boucher
994 * mem.c, mem.h: Added mem_calloc().
996 2007-08-16 Marc Boucher
997 * tcpip.c, tcpip.h memp.c, memp.h: Added distinct memp (MEMP_TCPIP_MSG_INPKT)
998 for input packets to prevent floods from consuming all of MEMP_TCPIP_MSG
999 and starving other message types.
1000 Renamed MEMP_TCPIP_MSG to MEMP_TCPIP_MSG_API
1002 2007-08-16 Marc Boucher
1003 * pbuf.c, pbuf.h, etharp.c, tcp_in.c, sockets.c: Split pbuf flags in pbuf
1004 type and flgs (later renamed to flags).
1005 Use enum pbuf_flag as pbuf_type. Renumber PBUF_FLAG_*.
1006 Improved lwip_recvfrom(). TCP push now propagated.
1008 2007-08-16 Marc Boucher
1009 * ethernetif.c, contrib/ports/various: ethbroadcast now a shared global
1012 2007-08-16 Marc Boucher
1013 * ppp_oe.c ppp_oe.h, auth.c chap.c fsm.c lcp.c ppp.c ppp.h,
1014 etharp.c ethernetif.c, etharp.h, opt.h tcpip.h, tcpip.c:
1015 Added PPPoE support and various PPP improvements.
1017 2007-07-25 Simon Goldschmidt
1018 * api_lib.c, ip_frag.c, pbuf.c, api.h, pbuf.h: Introduced pbuf_copy_partial,
1019 making netbuf_copy_partial use this function.
1021 2007-07-25 Simon Goldschmidt
1022 * tcp_in.c: Fix bug #20506: Slow start / initial congestion window starts with
1023 2 * mss (instead of 1 * mss previously) to comply with some newer RFCs and
1026 2007-07-13 Jared Grubb (integrated by Frédéric Bernon)
1027 * opt.h, netif.h, netif.c, ethernetif.c: Add new configuration option to add
1028 a link callback in the netif struct, and functions to handle it. Be carefull
1029 for port maintainers to add the NETIF_FLAG_LINK_UP flag (like in ethernetif.c)
1030 if you want to be sure to be compatible with future changes...
1032 2007-06-30 Frédéric Bernon
1033 * sockets.h, sockets.c: Implement MSG_PEEK flag for recv/recvfrom functions.
1035 2007-06-21 Simon Goldschmidt
1036 * etharp.h, etharp.c: Combined etharp_request with etharp_raw for both
1037 LWIP_AUTOIP =0 and =1 to remove redundant code.
1039 2007-06-21 Simon Goldschmidt
1040 * mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option
1041 MEM_USE_POOLS to use 4 pools with different sized elements instead of a
1042 heap. This both prevents memory fragmentation and gives a higher speed
1043 at the cost of more memory consumption. Turned off by default.
1045 2007-06-21 Simon Goldschmidt
1046 * api_lib.c, api_msg.c, api.h, api_msg.h: Converted the length argument of
1047 netconn_write (and therefore also api_msg_msg.msg.w.len) from u16_t into
1048 int to be able to send a bigger buffer than 64K with one time (mainly
1049 used from lwip_send).
1051 2007-06-21 Simon Goldschmidt
1052 * tcp.h, api_msg.c: Moved the nagle algorithm from netconn_write/do_write
1053 into a define (tcp_output_nagle) in tcp.h to provide it to raw api users, too.
1055 2007-06-21 Simon Goldschmidt
1056 * api.h, api_lib.c, api_msg.c: Fixed bug #20021: Moved sendbuf-processing in
1057 netconn_write from api_lib.c to api_msg.c to also prevent multiple context-
1058 changes on low memory or empty send-buffer.
1060 2007-06-18 Simon Goldschmidt
1061 * etharp.c, etharp.h: Changed etharp to use a defined hardware address length
1062 of 6 to avoid loading netif->hwaddr_len every time (since this file is only
1063 used for ethernet and struct eth_addr already had a defined length of 6).
1065 2007-06-17 Simon Goldschmidt
1066 * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets
1067 to disable UDP checksum generation on transmit.
1069 2007-06-13 Frédéric Bernon, Simon Goldschmidt
1070 * debug.h, api_msg.c: change LWIP_ERROR to use it to check errors like invalid
1071 pointers or parameters, and let the possibility to redefined it in cc.h. Use
1072 this macro to check "conn" parameter in api_msg.c functions.
1074 2007-06-11 Simon Goldschmidt
1075 * sockets.c, sockets.h: Added UDP lite support for sockets
1077 2007-06-10 Simon Goldschmidt
1078 * udp.h, opt.h, api_msg.c, ip.c, udp.c: Included switch LWIP_UDPLITE (enabled
1079 by default) to switch off UDP-Lite support if not needed (reduces udp.c code
1082 2007-06-09 Dominik Spies (integrated by Frédéric Bernon)
1083 * autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h:
1084 AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and
1085 LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt
1086 (see TODO mark in the source code).
1088 2007-06-09 Simon Goldschmidt
1089 * etharp.h, etharp.c, ethernetif.c: Modified order of parameters for
1090 etharp_output() to match netif->output so etharp_output() can be used
1091 directly as netif->output to save one function call.
1093 2007-06-08 Simon Goldschmidt
1094 * netif.h, ethernetif.c, slipif.c, loopif.c: Added define
1095 NETIF_INIT_SNMP(netif, type, speed) to initialize per-netif snmp variables,
1096 added initialization of those to ethernetif, slipif and loopif.
1098 2007-05-18 Simon Goldschmidt
1099 * opt.h, ip_frag.c, ip_frag.h, ip.c: Added option IP_FRAG_USES_STATIC_BUF
1100 (defaulting to off for now) that can be set to 0 to send fragmented
1101 packets by passing PBUF_REFs down the stack.
1103 2007-05-23 Frédéric Bernon
1104 * api_lib.c: Implement SO_RCVTIMEO for accept and recv on TCP
1105 connections, such present in patch #5959.
1107 2007-05-23 Frédéric Bernon
1108 * api.h, api_lib.c, api_msg.c, sockets.c: group the different NETCONN_UDPxxx
1109 code in only one part...
1111 2007-05-18 Simon Goldschmidt
1112 * opt.h, memp.h, memp.c: Added option MEMP_OVERFLOW_CHECK to check for memp
1113 elements to overflow. This is achieved by adding some bytes before and after
1114 each pool element (increasing their size, of course), filling them with a
1115 prominent value and checking them on freeing the element.
1116 Set it to 2 to also check every element in every pool each time memp_malloc()
1117 or memp_free() is called (slower but more helpful).
1119 2007-05-10 Simon Goldschmidt
1120 * opt.h, memp.h, memp.c, pbuf.c (see task #6831): use a new memp pool for
1121 PBUF_POOL pbufs instead of the old pool implementation in pbuf.c to reduce
1124 2007-05-11 Frédéric Bernon
1125 * sockets.c, api_lib.c, api_msg.h, api_msg.c, netifapi.h, netifapi.c, tcpip.c:
1126 Include a function pointer instead of a table index in the message to reduce
1127 footprint. Disable some part of lwip_send and lwip_sendto if some options are
1128 not set (LWIP_TCP, LWIP_UDP, LWIP_RAW).
1130 2007-05-10 Simon Goldschmidt
1131 * *.h (except netif/ppp/*.h): Included patch #5448: include '#ifdef __cplusplus
1132 \ extern "C" {' in all header files. Now you can write your application using
1133 the lwIP stack in C++ and simply #include the core files. Note I have left
1134 out the netif/ppp/*h header files for now, since I don't know which files are
1135 included by applications and which are for internal use only.
1137 2007-05-09 Simon Goldschmidt
1138 * opt.h, *.c/*.h: Included patch #5920: Create define to override C-library
1139 memcpy. 2 Defines are created: MEMCPY() for normal memcpy, SMEMCPY() for
1140 situations where some compilers might inline the copy and save a function
1141 call. Also replaced all calls to memcpy() with calls to (S)MEMCPY().
1143 2007-05-08 Simon Goldschmidt
1144 * mem.h: If MEM_LIBC_MALLOC==1, allow the defines (e.g. mem_malloc() -> malloc())
1145 to be overriden in case the C-library malloc implementation is not protected
1146 against concurrent access.
1148 2007-05-04 Simon Goldschmidt (Atte Kojo)
1149 * etharp.c: Introduced fast one-entry-cache to speed up ARP lookup when sending
1150 multiple packets to the same host.
1152 2007-05-04 Frédéric Bernon, Jonathan Larmour
1153 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fix bug #19162 "lwip_sento: a possible
1154 to corrupt remote addr/port connection state". Reduce problems "not enought memory" with
1155 netbuf (if we receive lot of datagrams). Improve lwip_sendto (only one exchange between
1156 sockets api and api_msg which run in tcpip_thread context). Add netconn_sento function.
1157 Warning, if you directly access to "fromaddr" & "fromport" field from netbuf struct,
1158 these fields are now renamed "addr" & "port".
1160 2007-04-11 Jonathan Larmour
1161 * sys.h, api_lib.c: Provide new sys_mbox_tryfetch function. Require ports to provide new
1162 sys_arch_mbox_tryfetch function to get a message if one is there, otherwise return
1163 with SYS_MBOX_EMPTY. sys_arch_mbox_tryfetch can be implemented as a function-like macro
1164 by the port in sys_arch.h if desired.
1166 2007-04-06 Frédéric Bernon, Simon Goldschmidt
1167 * opt.h, tcpip.h, tcpip.c, netifapi.h, netifapi.c: New configuration option LWIP_NETIF_API
1168 allow to use thread-safe functions to add/remove netif in list, and to start/stop dhcp
1169 clients, using new functions from netifapi.h. Disable as default (no port change to do).
1171 2007-04-05 Frédéric Bernon
1172 * sockets.c: remplace ENOBUFS errors on alloc_socket by ENFILE to be more BSD compliant.
1174 2007-04-04 Simon Goldschmidt
1175 * arch.h, api_msg.c, dhcp.c, msg_in.c, sockets.c: Introduced #define LWIP_UNUSED_ARG(x)
1176 use this for and architecture-independent form to tell the compiler you intentionally
1177 are not using this variable. Can be overriden in cc.h.
1179 2007-03-28 Frédéric Bernon
1180 * opt.h, netif.h, dhcp.h, dhcp.c: New configuration option LWIP_NETIF_HOSTNAME allow to
1181 define a hostname in netif struct (this is just a pointer, so, you can use a hardcoded
1182 string, point on one of your's ethernetif field, or alloc a string you will free yourself).
1183 It will be used by DHCP to register a client hostname, but can also be use when you call
1186 2007-03-28 Frédéric Bernon
1187 * netif.h, netif.c: A new NETIF_FLAG_ETHARP flag is defined in netif.h, to allow to
1188 initialize a network interface's flag with. It tell this interface is an ethernet
1189 device, and we can use ARP with it to do a "gratuitous ARP" (RFC 3220 "IP Mobility
1190 Support for IPv4" section 4.6) when interface is "up" with netif_set_up().
1192 2007-03-26 Frédéric Bernon, Jonathan Larmour
1193 * opt.h, tcpip.c: New configuration option LWIP_ARP allow to disable ARP init at build
1194 time if you only use PPP or SLIP. The default is enable. Note we don't have to call
1195 etharp_init in your port's initilization sequence if you use tcpip.c, because this call
1196 is done in tcpip_init function.
1198 2007-03-22 Frédéric Bernon
1199 * stats.h, stats.c, msg_in.c: Stats counters can be change to u32_t if necessary with the
1200 new option LWIP_STATS_LARGE. If you need this option, define LWIP_STATS_LARGE to 1 in
1201 your lwipopts.h. More, unused counters are not defined in the stats structs, and not
1202 display by stats_display(). Note that some options (SYS_STATS and RAW_STATS) are defined
1203 but never used. Fix msg_in.c with the correct #if test for a stat display.
1205 2007-03-21 Kieran Mansley
1206 * netif.c, netif.h: Apply patch#4197 with some changes (originator: rireland@hmgsl.com).
1207 Provides callback on netif up/down state change.
1209 2007-03-11 Frédéric Bernon, Mace Gael, Steve Reynolds
1210 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, igmp.h, igmp.c,
1211 ip.c, netif.h, tcpip.c, opt.h:
1212 New configuration option LWIP_IGMP to enable IGMP processing. Based on only one
1213 filter per all network interfaces. Declare a new function in netif to enable to
1214 control the MAC filter (to reduce lwIP traffic processing).
1216 2007-03-11 Frédéric Bernon
1217 * tcp.h, tcp.c, sockets.c, tcp_out.c, tcp_in.c, opt.h: Keepalive values can
1218 be configured at run time with LWIP_TCP_KEEPALIVE, but don't change this
1219 unless you know what you're doing (default are RFC1122 compliant). Note
1220 that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set in seconds.
1222 2007-03-08 Frédéric Bernon
1223 * tcp.h: Keepalive values can be configured at compile time, but don't change
1224 this unless you know what you're doing (default are RFC1122 compliant).
1226 2007-03-08 Frédéric Bernon
1227 * sockets.c, api.h, api_lib.c, tcpip.c, sys.h, sys.c, err.c, opt.h:
1228 Implement LWIP_SO_RCVTIMEO configuration option to enable/disable SO_RCVTIMEO
1229 on UDP sockets/netconn.
1231 2007-03-08 Simon Goldschmidt
1232 * snmp_msg.h, msg_in.c: SNMP UDP ports can be configured at compile time.
1234 2007-03-06 Frédéric Bernon
1235 * api.h, api_lib.c, sockets.h, sockets.c, tcpip.c, sys.h, sys.c, err.h:
1236 Implement SO_RCVTIMEO on UDP sockets/netconn.
1238 2007-02-28 Kieran Mansley (based on patch from Simon Goldschmidt)
1239 * api_lib.c, tcpip.c, memp.c, memp.h: make API msg structs allocated
1240 on the stack and remove the API msg type from memp
1242 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
1243 * sockets.h, sockets.c: Move socket initialization to new
1244 lwip_socket_init() function.
1245 NOTE: this changes the API with ports. Ports will have to be
1246 updated to call lwip_socket_init() now.
1248 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
1249 * api_lib.c: Use memcpy in netbuf_copy_partial.
1254 2008-03-17 Frédéric Bernon, Ed Kerekes
1255 * igmp.h, igmp.c: Fix bug #22613 "IGMP iphdr problem" (could have
1256 some problems to fill the IP header on some targets, use now the
1257 ip.h macros to do it).
1259 2008-03-13 Frédéric Bernon
1260 * sockets.c: Fix bug #22435 "lwip_recvfrom with TCP break;". Using
1261 (lwip_)recvfrom with valid "from" and "fromlen" parameters, on a
1262 TCP connection caused a crash. Note that using (lwip_)recvfrom
1263 like this is a bit slow and that using (lwip)getpeername is the
1264 good lwip way to do it (so, using recv is faster on tcp sockets).
1266 2008-03-12 Frédéric Bernon, Jonathan Larmour
1267 * api_msg.c, contrib/apps/ping.c: Fix bug #22530 "api_msg.c's
1268 recv_raw() does not consume data", and the ping sample (with
1269 LWIP_SOCKET=1, the code did the wrong supposition that lwip_recvfrom
1270 returned the IP payload, without the IP header).
1272 2008-03-04 Jonathan Larmour
1273 * mem.c, stats.c, mem.h: apply patch #6414 to avoid compiler errors
1274 and/or warnings on some systems where mem_size_t and size_t differ.
1275 * pbuf.c, ppp.c: Fix warnings on some systems with mem_malloc.
1277 2008-03-04 Kieran Mansley (contributions by others)
1278 * Numerous small compiler error/warning fixes from contributions to
1279 mailing list after 1.3.0 release candidate made.
1281 2008-01-25 Cui hengbin (integrated by Frédéric Bernon)
1282 * dns.c: Fix bug #22108 "DNS problem" caused by unaligned structures.
1284 2008-01-15 Kieran Mansley
1285 * tcp_out.c: BUG20511. Modify persist timer to start when we are
1286 prevented from sending by a small send window, not just a zero
1289 2008-01-09 Jonathan Larmour
1290 * opt.h, ip.c: Rename IP_OPTIONS define to IP_OPTIONS_ALLOWED to avoid
1291 conflict with Linux system headers.
1293 2008-01-06 Jonathan Larmour
1294 * dhcp.c: fix bug #19927: "DHCP NACK problem" by clearing any existing set IP
1295 address entirely on receiving a DHCPNAK, and restarting discovery.
1297 2007-12-21 Simon Goldschmidt
1298 * sys.h, api_lib.c, api_msg.c, sockets.c: fix bug #21698: "netconn->recv_avail
1299 is not protected" by using new macros for interlocked access to modify/test
1300 netconn->recv_avail.
1302 2007-12-20 Kieran Mansley (based on patch from Oleg Tyshev)
1303 * tcp_in.c: fix bug# 21535 (nrtx not reset correctly in SYN_SENT state)
1305 2007-12-20 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
1306 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: fix bug #20199 (better handling
1307 of silly window avoidance and prevent lwIP from shrinking the window)
1309 2007-12-04 Simon Goldschmidt
1310 * tcp.c, tcp_in.c: fix bug #21699 (segment leak in ooseq processing when last
1311 data packet was lost): add assert that all segment lists are empty in
1312 tcp_pcb_remove before setting pcb to CLOSED state; don't directly set CLOSED
1313 state from LAST_ACK in tcp_process
1315 2007-12-02 Simon Goldschmidt
1316 * sockets.h: fix bug #21654: exclude definition of struct timeval from #ifndef FD_SET
1317 If including <sys/time.h> for system-struct timeval, LWIP_TIMEVAL_PRIVATE now
1318 has to be set to 0 in lwipopts.h
1320 2007-12-02 Simon Goldschmidt
1321 * api_msg.c, api_lib.c: fix bug #21656 (recvmbox problem in netconn API): always
1322 allocate a recvmbox in netconn_new_with_proto_and_callback. For a tcp-listen
1323 netconn, this recvmbox is later freed and a new mbox is allocated for acceptmbox.
1324 This is a fix for thread-safety and allocates all items needed for a netconn
1325 when the netconn is created.
1327 2007-11-30 Simon Goldschmidt
1328 * udp.c: first attempt to fix bug #21655 (DHCP doesn't work reliably with multiple
1329 netifs): if LWIP_DHCP is enabled, UDP packets to DHCP_CLIENT_PORT are passed
1330 to netif->dhcp->pcb only (if that exists) and not to any other pcb for the same
1331 port (only solution to let UDP pcbs 'bind' to a netif instead of an IP address)
1333 2007-11-27 Simon Goldschmidt
1334 * ip.c: fixed bug #21643 (udp_send/raw_send don't fail if netif is down) by
1335 letting ip_route only use netifs that are up.
1337 2007-11-27 Simon Goldschmidt
1338 * err.h, api_lib.c, api_msg.c, sockets.c: Changed error handling: ERR_MEM, ERR_BUF
1339 and ERR_RTE are seen as non-fatal, all other errors are fatal. netconns and
1340 sockets block most operations once they have seen a fatal error.
1342 2007-11-27 Simon Goldschmidt
1343 * udp.h, udp.c, dhcp.c: Implemented new function udp_sendto_if which takes the
1344 netif to send as an argument (to be able to send on netifs that are down).
1346 2007-11-26 Simon Goldschmidt
1347 * tcp_in.c: Fixed bug #21582: pcb->acked accounting can be wrong when ACKs
1350 2007-11-21 Simon Goldschmidt
1351 * tcp.h, tcp_out.c, api_msg.c: Fixed bug #20287: tcp_output_nagle sends too early
1352 Fixed the nagle algorithm; nagle now also works for all raw API applications
1353 and has to be explicitly disabled with 'tcp_pcb->flags |= TF_NODELAY'
1355 2007-11-12 Frédéric Bernon
1356 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fixed bug #20900. Now, most
1357 of the netconn_peer and netconn_addr processing is done inside tcpip_thread
1358 context in do_getaddr.
1360 2007-11-10 Simon Goldschmidt
1361 * etharp.c: Fixed bug: assert fired when MEMP_ARP_QUEUE was empty (which can
1362 happen any time). Now the packet simply isn't enqueued when out of memory.
1364 2007-11-01 Simon Goldschmidt
1365 * tcp.c, tcp_in.c: Fixed bug #21494: The send mss (pcb->mss) is set to 536 (or
1366 TCP_MSS if that is smaller) as long as no MSS option is received from the
1369 2007-11-01 Simon Goldschmidt
1370 * tcp.h, tcp.c, tcp_in.c: Fixed bug #21491: The MSS option sent (with SYN)
1371 is now based on TCP_MSS instead of pcb->mss (on passive open now effectively
1372 sending our configured TCP_MSS instead of the one received).
1374 2007-11-01 Simon Goldschmidt
1375 * tcp_in.c: Fixed bug #21181: On active open, the initial congestion window was
1376 calculated based on the configured TCP_MSS, not on the MSS option received
1379 2007-10-09 Simon Goldschmidt
1380 * udp.c, inet.c, inet.h: Fixed UDPLite: send: Checksum was always generated too
1381 short and also was generated wrong if checksum coverage != tot_len;
1382 receive: checksum was calculated wrong if checksum coverage != tot_len
1384 2007-10-08 Simon Goldschmidt
1385 * mem.c: lfree was not updated in mem_realloc!
1387 2007-10-07 Frédéric Bernon
1388 * sockets.c, api.h, api_lib.c: First step to fix "bug #20900 : Potential
1389 crash error problem with netconn_peer & netconn_addr". VERY IMPORTANT:
1390 this change cause an API breakage for netconn_addr, since a parameter
1391 type change. Any compiler should cause an error without any changes in
1392 yours netconn_peer calls (so, it can't be a "silent change"). It also
1393 reduce a little bit the footprint for socket layer (lwip_getpeername &
1394 lwip_getsockname use now a common lwip_getaddrname function since
1395 netconn_peer & netconn_addr have the same parameters).
1397 2007-09-20 Simon Goldschmidt
1398 * tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state)
1399 by checking tcp_tw_pcbs also
1401 2007-09-19 Simon Goldschmidt
1402 * icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
1404 2007-09-15 Mike Kleshov
1405 * mem.c: Fixed bug #21077 (inaccuracy in calculation of lwip_stat.mem.used)
1407 2007-09-06 Frédéric Bernon
1408 * several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
1409 it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
1410 already include "lwip/arch.h"). Like that, default defines are provided by "lwip/arch.h"
1411 if they are not defined in cc.h, in the same spirit than "lwip/opt.h" for lwipopts.h.
1413 2007-08-30 Frédéric Bernon
1414 * igmp.h, igmp.c: Some changes to remove some redundant code, add some traces,
1415 and fix some coding style.
1417 2007-08-28 Frédéric Bernon
1418 * tcpip.c: Fix TCPIP_MSG_INPKT processing: now, tcpip_input can be used for any
1419 kind of packets. These packets are considered like Ethernet packets (payload
1420 pointing to ethhdr) if the netif got the NETIF_FLAG_ETHARP flag. Else, packets
1421 are considered like IP packets (payload pointing to iphdr).
1423 2007-08-27 Frédéric Bernon
1424 * api.h, api_lib.c, api_msg.c: First fix for "bug #20900 : Potential crash error
1425 problem with netconn_peer & netconn_addr". Introduce NETCONN_LISTEN netconn_state
1426 and remove obsolete ones (NETCONN_RECV & NETCONN_ACCEPT).
1428 2007-08-24 Kieran Mansley
1429 * inet.c Modify (acc >> 16) test to ((acc >> 16) != 0) to help buggy
1430 compiler (Paradigm C++)
1432 2007-08-09 Frédéric Bernon, Bill Florac
1433 * stats.h, stats.c, igmp.h, igmp.c, opt.h: Fix for bug #20503 : IGMP Improvement.
1434 Introduce IGMP_STATS to centralize statistics management.
1436 2007-08-09 Frédéric Bernon, Bill Florac
1437 * udp.c: Fix for bug #20503 : IGMP Improvement. Enable to receive a multicast
1438 packet on a udp pcb binded on an netif's IP address, and not on "any".
1440 2007-08-09 Frédéric Bernon, Bill Florac
1441 * igmp.h, igmp.c, ip.c: Fix minor changes from bug #20503 : IGMP Improvement.
1442 This is mainly on using lookup/lookfor, and some coding styles...
1444 2007-07-26 Frédéric Bernon (and "thedoctor")
1445 * igmp.c: Fix bug #20595 to accept IGMPv3 "Query" messages.
1447 2007-07-25 Simon Goldschmidt
1448 * api_msg.c, tcp.c: Another fix for bug #20021: by not returning an error if
1449 tcp_output fails in tcp_close, the code in do_close_internal gets simpler
1450 (tcp_output is called again later from tcp timers).
1452 2007-07-25 Simon Goldschmidt
1453 * ip_frag.c: Fixed bug #20429: use the new pbuf_copy_partial instead of the old
1454 copy_from_pbuf, which illegally modified the given pbuf.
1456 2007-07-25 Simon Goldschmidt
1457 * tcp_out.c: tcp_enqueue: pcb->snd_queuelen didn't work for chaine PBUF_RAMs:
1458 changed snd_queuelen++ to snd_queuelen += pbuf_clen(p).
1460 2007-07-24 Simon Goldschmidt
1461 * api_msg.c, tcp.c: Fix bug #20480: Check the pcb passed to tcp_listen() for the
1462 correct state (must be CLOSED).
1464 2007-07-13 Thomas Taranowski (commited by Jared Grubb)
1465 * memp.c: Fix bug #20478: memp_malloc returned NULL+MEMP_SIZE on failed
1466 allocation. It now returns NULL.
1468 2007-07-13 Frédéric Bernon
1469 * api_msg.c: Fix bug #20318: api_msg "recv" callbacks don't call pbuf_free in
1472 2007-07-13 Frédéric Bernon
1473 * api_msg.c: Fix bug #20315: possible memory leak problem if tcp_listen failed,
1474 because current code doesn't follow rawapi.txt documentation.
1476 2007-07-13 Kieran Mansley
1477 * src/core/tcp_in.c Apply patch#5741 from Oleg Tyshev to fix bug in
1478 out of sequence processing of received packets
1480 2007-07-03 Simon Goldschmidt
1481 * nearly-all-files: Added assertions where PBUF_RAM pbufs are used and an
1482 assumption is made that this pbuf is in one piece (i.e. not chained). These
1483 assumptions clash with the possibility of converting to fully pool-based
1484 pbuf implementations, where PBUF_RAM pbufs might be chained.
1486 2007-07-03 Simon Goldschmidt
1487 * api.h, api_lib.c, api_msg.c: Final fix for bug #20021 and some other problems
1488 when closing tcp netconns: removed conn->sem, less context switches when
1489 closing, both netconn_close and netconn_delete should safely close tcp
1492 2007-07-02 Simon Goldschmidt
1493 * ipv4/ip.h, ipv6/ip.h, opt.h, netif.h, etharp.h, ipv4/ip.c, netif.c, raw.c,
1494 tcp_out.c, udp.c, etharp.c: Added option LWIP_NETIF_HWADDRHINT (default=off)
1495 to cache ARP table indices with each pcb instead of single-entry cache for
1498 2007-07-02 Simon Goldschmidt
1499 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Added some ASSERTS and casts to prevent
1500 warnings when assigning to smaller types.
1502 2007-06-28 Simon Goldschmidt
1503 * tcp_out.c: Added check to prevent tcp_pcb->snd_queuelen from overflowing.
1505 2007-06-28 Simon Goldschmidt
1506 * tcp.h: Fixed bug #20287: Fixed nagle algorithm (sending was done too early if
1507 a segment contained chained pbufs)
1509 2007-06-28 Frédéric Bernon
1510 * autoip.c: replace most of rand() calls by a macro LWIP_AUTOIP_RAND which compute
1511 a "pseudo-random" value based on netif's MAC and some autoip fields. It's always
1512 possible to define this macro in your own lwipopts.h to always use C library's
1513 rand(). Note that autoip_create_rand_addr doesn't use this macro.
1515 2007-06-28 Frédéric Bernon
1516 * netifapi.h, netifapi.c, tcpip.h, tcpip.c: Update code to handle the option
1517 LWIP_TCPIP_CORE_LOCKING, and do some changes to be coherent with last modifications
1518 in api_lib/api_msg (use pointers and not type with table, etc...)
1520 2007-06-26 Simon Goldschmidt
1521 * udp.h: Fixed bug #20259: struct udp_hdr was lacking the packin defines.
1523 2007-06-25 Simon Goldschmidt
1524 * udp.c: Fixed bug #20253: icmp_dest_unreach was called with a wrong p->payload
1525 for udp packets with no matching pcb.
1527 2007-06-25 Simon Goldschmidt
1528 * udp.c: Fixed bug #20220: UDP PCB search in udp_input(): a non-local match
1529 could get udp input packets if the remote side matched.
1531 2007-06-13 Simon Goldschmidt
1532 * netif.c: Fixed bug #20180 (TCP pcbs listening on IP_ADDR_ANY could get
1533 changed in netif_set_ipaddr if previous netif->ip_addr.addr was 0.
1535 2007-06-13 Simon Goldschmidt
1536 * api_msg.c: pcb_new sets conn->err if protocol is not implemented
1537 -> netconn_new_..() does not allocate a new connection for unsupported
1540 2007-06-13 Frédéric Bernon, Simon Goldschmidt
1541 * api_lib.c: change return expression in netconn_addr and netconn_peer, because
1542 conn->err was reset to ERR_OK without any reasons (and error was lost)...
1544 2007-06-13 Frédéric Bernon, Matthias Weisser
1545 * opt.h, mem.h, mem.c, memp.c, pbuf.c, ip_frag.c, vj.c: Fix bug #20162. Rename
1546 MEM_ALIGN in LWIP_MEM_ALIGN and MEM_ALIGN_SIZE in LWIP_MEM_ALIGN_SIZE to avoid
1547 some macro names collision with some OS macros.
1549 2007-06-11 Simon Goldschmidt
1550 * udp.c: UDP Lite: corrected the use of chksum_len (based on RFC3828: if it's 0,
1551 create checksum over the complete packet. On RX, if it's < 8 (and not 0),
1552 discard the packet. Also removed the duplicate 'udphdr->chksum = 0' for both
1555 2007-06-11 Srinivas Gollakota & Oleg Tyshev
1556 * tcp_out.c: Fix for bug #20075 : "A problem with keep-alive timer and TCP flags"
1557 where TCP flags wasn't initialized in tcp_keepalive.
1559 2007-06-03 Simon Goldschmidt
1560 * udp.c: udp_input(): Input pbuf was not freed if pcb had no recv function
1561 registered, p->payload was modified without modifying p->len if sending
1562 icmp_dest_unreach() (had no negative effect but was definitively wrong).
1564 2007-06-03 Simon Goldschmidt
1565 * icmp.c: Corrected bug #19937: For responding to an icmp echo request, icmp
1566 re-used the input pbuf even if that didn't have enough space to include the
1567 link headers. Now the space is tested and a new pbuf is allocated for the
1568 echo response packet if the echo request pbuf isn't big enough.
1570 2007-06-01 Simon Goldschmidt
1571 * sockets.c: Checked in patch #5914: Moved sockopt processing into tcpip_thread.
1573 2007-05-23 Frédéric Bernon
1574 * api_lib.c, sockets.c: Fixed bug #5958 for netconn_listen (acceptmbox only
1575 allocated by do_listen if success) and netconn_accept errors handling. In
1576 most of api_lib functions, we replace some errors checkings like "if (conn==NULL)"
1577 by ASSERT, except for netconn_delete.
1579 2007-05-23 Frédéric Bernon
1580 * api_lib.c: Fixed bug #5957 "Safe-thread problem inside netconn_recv" to return
1581 an error code if it's impossible to fetch a pbuf on a TCP connection (and not
1582 directly close the recvmbox).
1584 2007-05-22 Simon Goldschmidt
1585 * tcp.c: Fixed bug #1895 (tcp_bind not correct) by introducing a list of
1586 bound but unconnected (and non-listening) tcp_pcbs.
1588 2007-05-22 Frédéric Bernon
1589 * sys.h, sys.c, api_lib.c, tcpip.c: remove sys_mbox_fetch_timeout() (was only
1590 used for LWIP_SO_RCVTIMEO option) and use sys_arch_mbox_fetch() instead of
1591 sys_mbox_fetch() in api files. Now, users SHOULD NOT use internal lwIP features
1592 like "sys_timeout" in their application threads.
1594 2007-05-22 Frédéric Bernon
1595 * api.h, api_lib.c, api_msg.h, api_msg.c: change the struct api_msg_msg to see
1596 which parameters are used by which do_xxx function, and to avoid "misusing"
1597 parameters (patch #5938).
1599 2007-05-22 Simon Goldschmidt
1600 * api_lib.c, api_msg.c, raw.c, api.h, api_msg.h, raw.h: Included patch #5938:
1601 changed raw_pcb.protocol from u16_t to u8_t since for IPv4 and IPv6, proto
1602 is only 8 bits wide. This affects the api, as there, the protocol was
1605 2007-05-18 Simon Goldschmidt
1606 * memp.c: addition to patch #5913: smaller pointer was returned but
1607 memp_memory was the same size -> did not save memory.
1609 2007-05-16 Simon Goldschmidt
1610 * loopif.c, slipif.c: Fix bug #19729: free pbuf if netif->input() returns
1613 2007-05-16 Simon Goldschmidt
1614 * api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same
1615 as the one of the netif used for sending to prevent sending from old
1616 addresses after a netif address gets changed (partly fixes bug #3168).
1618 2007-05-16 Frédéric Bernon
1619 * tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work
1620 with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in
1621 tcpip_init) because we have to be sure that network interfaces are already
1622 added (mac filter is updated only in igmp_init for the moment).
1624 2007-05-16 Simon Goldschmidt
1625 * mem.c, memp.c: Removed semaphores from memp, changed sys_sem_wait calls
1626 into sys_arch_sem_wait calls to prevent timers from running while waiting
1627 for the heap. This fixes bug #19167.
1629 2007-05-13 Simon Goldschmidt
1630 * tcp.h, sockets.h, sockets.c: Fixed bug from patch #5865 by moving the defines
1631 for socket options (lwip_set/-getsockopt) used with level IPPROTO_TCP from
1634 2007-05-07 Simon Goldschmidt
1635 * mem.c: Another attempt to fix bug #17922.
1637 2007-05-04 Simon Goldschmidt
1638 * pbuf.c, pbuf.h, etharp.c: Further update to ARP queueing: Changed pbuf_copy()
1639 implementation so that it can be reused (don't allocate the target
1640 pbuf inside pbuf_copy()).
1642 2007-05-04 Simon Goldschmidt
1643 * memp.c: checked in patch #5913: in memp_malloc() we can return memp as mem
1644 to save a little RAM (next pointer of memp is not used while not in pool).
1647 * sockets.c: Fix ioctl FIONREAD when some data remains from last recv.
1650 2007-04-23 Simon Goldschmidt
1651 * loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results
1652 in NULL reference for incoming TCP packets". Loopif has to be configured
1653 (using LWIP_LOOPIF_MULTITHREADING) to directly call netif->input()
1654 (multithreading environments, e.g. netif->input() = tcpip_input()) or
1655 putting packets on a list that is fed to the stack by calling loopif_poll()
1656 (single-thread / NO_SYS / polling environment where e.g.
1657 netif->input() = ip_input).
1659 2007-04-17 Jonathan Larmour
1660 * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold
1661 the difference between two u16_t's.
1662 * sockets.h: FD_SETSIZE needs to match number of sockets, which is
1663 MEMP_NUM_NETCONN in sockets.c right now.
1665 2007-04-12 Jonathan Larmour
1666 * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580).
1668 2007-04-12 Kieran Mansley
1669 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Modify way the retransmission
1670 timer is reset to fix bug#19434, with help from Oleg Tyshev.
1672 2007-04-11 Simon Goldschmidt
1673 * etharp.c, pbuf.c, pbuf.h: 3rd fix for bug #11400 (arp-queuing): More pbufs than
1674 previously thought need to be copied (everything but PBUF_ROM!). Cleaned up
1675 pbuf.c: removed functions no needed any more (by etharp).
1677 2007-04-11 Kieran Mansley
1678 * inet.c, ip_addr.h, sockets.h, sys.h, tcp.h: Apply patch #5745: Fix
1679 "Constant is long" warnings with 16bit compilers. Contributed by
1680 avatar@mmlab.cse.yzu.edu.tw
1682 2007-04-05 Frédéric Bernon, Jonathan Larmour
1683 * api_msg.c: Fix bug #16830: "err_tcp() posts to connection mailbox when no pend on
1684 the mailbox is active". Now, the post is only done during a connect, and do_send,
1685 do_write and do_join_leave_group don't do anything if a previous error was signaled.
1687 2007-04-03 Frédéric Bernon
1688 * ip.c: Don't set the IP_DF ("Don't fragment") flag in the IP header in IP output
1689 packets. See patch #5834.
1691 2007-03-30 Frédéric Bernon
1692 * api_msg.c: add a "pcb_new" helper function to avoid redundant code, and to add
1693 missing pcb allocations checking (in do_bind, and for each raw_new). Fix style.
1695 2007-03-30 Frédéric Bernon
1696 * most of files: prefix all debug.h define with "LWIP_" to avoid any conflict with
1697 others environment defines (these were too "generic").
1699 2007-03-28 Frédéric Bernon
1700 * api.h, api_lib.c, sockets.c: netbuf_ref doesn't check its internal pbuf_alloc call
1701 result and can cause a crash. lwip_send now check netbuf_ref result.
1703 2007-03-28 Simon Goldschmidt
1704 * sockets.c Remove "#include <errno.h>" from sockets.c to avoid multiple
1705 definition of macros (in errno.h and lwip/arch.h) if LWIP_PROVIDE_ERRNO is
1706 defined. This is the way it should have been already (looking at
1709 2007-03-28 Kieran Mansley
1710 * opt.h Change default PBUF_POOL_BUFSIZE (again) to accomodate default MSS +
1711 IP and TCP headers *and* physical link headers
1713 2007-03-26 Frédéric Bernon (based on patch from Dmitry Potapov)
1714 * api_lib.c: patch for netconn_write(), fixes a possible race condition which cause
1715 to send some garbage. It is not a definitive solution, but the patch does solve
1716 the problem for most cases.
1718 2007-03-22 Frédéric Bernon
1719 * api_msg.h, api_msg.c: Remove obsolete API_MSG_ACCEPT and do_accept (never used).
1721 2007-03-22 Frédéric Bernon
1722 * api_lib.c: somes resources couldn't be freed if there was errors during
1723 netconn_new_with_proto_and_callback.
1725 2007-03-22 Frédéric Bernon
1726 * ethernetif.c: update netif->input calls to check return value. In older ports,
1727 it's a good idea to upgrade them, even if before, there could be another problem
1728 (access to an uninitialized mailbox).
1730 2007-03-21 Simon Goldschmidt
1731 * sockets.c: fixed bug #5067 (essentialy a signed/unsigned warning fixed
1732 by casting to unsigned).
1734 2007-03-21 Frédéric Bernon
1735 * api_lib.c, api_msg.c, tcpip.c: integrate sys_mbox_fetch(conn->mbox, NULL) calls from
1736 api_lib.c to tcpip.c's tcpip_apimsg(). Now, use a local variable and not a
1737 dynamic one from memp to send tcpip_msg to tcpip_thread in a synchrone call.
1738 Free tcpip_msg from tcpip_apimsg is not done in tcpip_thread. This give a
1739 faster and more reliable communication between api_lib and tcpip.
1741 2007-03-21 Frédéric Bernon
1742 * opt.h: Add LWIP_NETIF_CALLBACK (to avoid compiler warning) and set it to 0.
1744 2007-03-21 Frédéric Bernon
1745 * api_msg.c, igmp.c, igmp.h: Fix C++ style comments
1747 2007-03-21 Kieran Mansley
1748 * opt.h Change default PBUF_POOL_BUFSIZE to accomodate default MSS +
1751 2007-03-21 Kieran Mansley
1752 * Fix all uses of pbuf_header to check the return value. In some
1753 cases just assert if it fails as I'm not sure how to fix them, but
1754 this is no worse than before when they would carry on regardless
1757 2007-03-21 Kieran Mansley
1758 * sockets.c, igmp.c, igmp.h, memp.h: Fix C++ style comments and
1759 comment out missing header include in icmp.c
1761 2007-03-20 Frédéric Bernon
1762 * memp.h, stats.c: Fix stats_display function where memp_names table wasn't
1763 synchronized with memp.h.
1765 2007-03-20 Frédéric Bernon
1766 * tcpip.c: Initialize tcpip's mbox, and verify if initialized in tcpip_input,
1767 tcpip_ethinput, tcpip_callback, tcpip_apimsg, to fix a init problem with
1768 network interfaces. Also fix a compiler warning.
1770 2007-03-20 Kieran Mansley
1771 * udp.c: Only try and use pbuf_header() to make space for headers if
1772 not a ROM or REF pbuf.
1774 2007-03-19 Frédéric Bernon
1775 * api_msg.h, api_msg.c, tcpip.h, tcpip.c: Add return types to tcpip_apimsg()
1778 2007-03-19 Frédéric Bernon
1779 * Remove unimplemented "memp_realloc" function from memp.h.
1781 2007-03-11 Simon Goldschmidt
1782 * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused
1785 2007-03-11 Simon Goldschmidt (based on patch from Dmitry Potapov)
1786 * api_lib.c, sockets.c, api.h, api_msg.h, sockets.h: Fixed bug #19251
1787 (missing `const' qualifier in socket functions), to get more compatible to
1788 standard POSIX sockets.
1790 2007-03-11 Frédéric Bernon (based on patch from Dmitry Potapov)
1791 * sockets.c: Add asserts inside bind, connect and sendto to check input
1792 parameters. Remove excessive set_errno() calls after get_socket(), because
1793 errno is set inside of get_socket(). Move last sock_set_errno() inside
1796 2007-03-09 Simon Goldschmidt
1797 * memp.c: Fixed bug #11400: New etharp queueing introduced bug: memp_memory
1798 was allocated too small.
1800 2007-03-06 Simon Goldschmidt
1801 * tcpip.c: Initialize dhcp timers in tcpip_thread (if LWIP_DHCP) to protect
1802 the stack from concurrent access.
1804 2007-03-06 Frédéric Bernon, Dmitry Potapov
1805 * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy
1806 call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().
1808 2007-03-06 Simon Goldschmidt
1809 * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files
1810 if IP_FRAG == 0 and IP_REASSEMBLY == 0
1812 2007-03-06 Frédéric Bernon, Simon Goldschmidt
1813 * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration
1814 option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput.
1815 Allow to do ARP processing for incoming packets inside tcpip_thread
1816 (protecting ARP layer against concurrent access). You can also disable
1817 old code using tcp_input with new define ETHARP_TCPIP_INPUT set to 0.
1818 Older ports have to use tcpip_ethinput.
1820 2007-03-06 Simon Goldschmidt (based on patch from Dmitry Potapov)
1821 * err.h, err.c: fixed compiler warning "initialization dircards qualifiers
1822 from pointer target type"
1824 2007-03-05 Frédéric Bernon
1825 * opt.h, sockets.h: add new configuration options (LWIP_POSIX_SOCKETS_IO_NAMES,
1826 ETHARP_TRUST_IP_MAC, review SO_REUSE)
1828 2007-03-04 Frédéric Bernon
1829 * api_msg.c: Remove some compiler warnings : parameter "pcb" was never
1832 2007-03-04 Frédéric Bernon
1833 * api_lib.c: Fix "[patch #5764] api_lib.c cleanup: after patch #5687" (from
1835 The api_msg struct stay on the stack (not moved to netconn struct).
1837 2007-03-04 Simon Goldschmidt (based on patch from Dmitry Potapov)
1838 * pbuf.c: Fix BUG#19168 - pbuf_free can cause deadlock (if
1839 SYS_LIGHTWEIGHT_PROT=1 & freeing PBUF_RAM when mem_sem is not available)
1840 Also fixed cast warning in pbuf_alloc()
1842 2007-03-04 Simon Goldschmidt
1843 * etharp.c, etharp.h, memp.c, memp.h, opt.h: Fix BUG#11400 - don't corrupt
1844 existing pbuf chain when enqueuing multiple pbufs to a pending ARP request
1846 2007-03-03 Frédéric Bernon
1847 * udp.c: remove obsolete line "static struct udp_pcb *pcb_cache = NULL;"
1848 It is static, and never used in udp.c except udp_init().
1850 2007-03-02 Simon Goldschmidt
1851 * tcpip.c: Moved call to ip_init(), udp_init() and tcp_init() from
1852 tcpip_thread() to tcpip_init(). This way, raw API connections can be
1853 initialized before tcpip_thread is running (e.g. before OS is started)
1855 2007-03-02 Frédéric Bernon
1856 * rawapi.txt: Fix documentation mismatch with etharp.h about etharp_tmr's call
1859 2007-02-28 Kieran Mansley
1860 * pbuf.c: Fix BUG#17645 - ensure pbuf payload pointer is not moved
1861 outside the region of the pbuf by pbuf_header()
1863 2007-02-28 Kieran Mansley
1864 * sockets.c: Fix BUG#19161 - ensure milliseconds timeout is non-zero
1865 when supplied timeout is also non-zero
1869 2006-12-05 Leon Woestenberg
1870 * CHANGELOG: Mention STABLE-1.2.0 release.
1874 2006-12-01 Christiaan Simons
1875 * mem.h, opt.h: Added MEM_LIBC_MALLOC option.
1876 Note this is a workaround. Currently I have no other options left.
1878 2006-10-26 Christiaan Simons (accepted patch by Jonathan Larmour)
1879 * ipv4/ip_frag.c: rename MAX_MTU to IP_FRAG_MAX_MTU and move define
1880 to include/lwip/opt.h.
1881 * ipv4/lwip/ip_frag.h: Remove unused IP_REASS_INTERVAL.
1882 Move IP_REASS_MAXAGE and IP_REASS_BUFSIZE to include/lwip/opt.h.
1883 * opt.h: Add above new options.
1885 2006-08-18 Christiaan Simons
1886 * tcp_{in,out}.c: added SNMP counters.
1887 * ipv4/ip.c: added SNMP counters.
1888 * ipv4/ip_frag.c: added SNMP counters.
1890 2006-08-08 Christiaan Simons
1891 * etharp.{c,h}: added etharp_find_addr() to read
1892 (stable) ethernet/IP address pair from ARP table
1894 2006-07-14 Christiaan Simons
1895 * mib_structs.c: added
1896 * include/lwip/snmp_structs.h: added
1897 * netif.{c,h}, netif/ethernetif.c: added SNMP statistics to netif struct
1899 2006-07-06 Christiaan Simons
1900 * snmp/asn1_{enc,dec}.c added
1902 * snmp/msg_{in,out}.c added
1903 * include/lwip/snmp_asn1.h added
1904 * include/lwip/snmp_msg.h added
1905 * doc/snmp_agent.txt added
1907 2006-03-29 Christiaan Simons
1908 * inet.c, inet.h: Added platform byteswap support.
1909 Added LWIP_PLATFORM_BYTESWAP define (defaults to 0) and
1910 optional LWIP_PLATFORM_HTONS(), LWIP_PLATFORM_HTONL() macros.
1914 2006-11-30 Christiaan Simons
1915 * dhcp.c: Fixed false triggers of request_timeout.
1917 2006-11-28 Christiaan Simons
1918 * netif.c: In netif_add() fixed missing clear of ip_addr, netmask, gw and flags.
1920 2006-10-11 Christiaan Simons
1921 * api_lib.c etharp.c, ip.c, memp.c, stats.c, sys.{c,h} tcp.h:
1922 Partially accepted patch #5449 for ANSI C compatibility / build fixes.
1923 * ipv4/lwip/ip.h ipv6/lwip/ip.h: Corrected UDP-Lite protocol
1924 identifier from 170 to 136 (bug #17574).
1926 2006-10-10 Christiaan Simons
1927 * api_msg.c: Fixed Nagle algorithm as reported by Bob Grice.
1929 2006-08-17 Christiaan Simons
1930 * udp.c: Fixed bug #17200, added check for broadcast
1931 destinations for PCBs bound to a unicast address.
1933 2006-08-07 Christiaan Simons
1934 * api_msg.c: Flushing TCP output in do_close() (bug #15926).
1936 2006-06-27 Christiaan Simons
1937 * api_msg.c: Applied patch for cold case (bug #11135).
1938 In accept_function() ensure newconn->callback is always initialized.
1940 2006-06-15 Christiaan Simons
1941 * mem.h: added MEM_SIZE_F alias to fix an ancient cold case (bug #1748),
1942 facilitate printing of mem_size_t and u16_t statistics.
1944 2006-06-14 Christiaan Simons
1945 * api_msg.c: Applied patch #5146 to handle allocation failures
1946 in accept() by Kevin Lawson.
1948 2006-05-26 Christiaan Simons
1949 * api_lib.c: Removed conn->sem creation and destruction
1950 from netconn_write() and added sys_sem_new to netconn_new_*.
1954 2006-03-03 Christiaan Simons
1955 * ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap
1956 access and added pbuf_alloc() return value checks.
1958 2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net>
1959 * tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is
1960 now handled by the checksum routine properly.
1962 2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1963 * pbuf.c: Fix alignment; pbuf_init() would not work unless
1964 pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.)
1966 2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net>
1967 * tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch
1968 submitted by Mitrani Hiroshi.
1970 2005-12-15 Christiaan Simons
1971 * inet.c: Disabled the added summing routine to preserve code space.
1973 2005-12-14 Leon Woestenberg <leon.woestenberg@gmx.net>
1974 * tcp_in.c: Duplicate FIN ACK race condition fix by Kelvin Lawson.
1975 Added Curt McDowell's optimized checksumming routine for future
1976 inclusion. Need to create test case for unaliged, aligned, odd,
1977 even length combination of cases on various endianess machines.
1979 2005-12-09 Christiaan Simons
1980 * inet.c: Rewrote standard checksum routine in proper portable C.
1982 2005-11-25 Christiaan Simons
1983 * udp.c tcp.c: Removed SO_REUSE hack. Should reside in socket code only.
1984 * *.c: introduced cc.h LWIP_DEBUG formatters matching the u16_t, s16_t,
1985 u32_t, s32_t typedefs. This solves most debug word-length assumes.
1987 2005-07-17 Leon Woestenberg <leon.woestenberg@gmx.net>
1988 * inet.c: Fixed unaligned 16-bit access in the standard checksum
1989 routine by Peter Jolasson.
1990 * slipif.c: Fixed implementation assumption of single-pbuf datagrams.
1992 2005-02-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1993 * tcp_out.c: Fixed uninitialized 'queue' referenced in memerr branch.
1994 * tcp_{out|in}.c: Applied patch fixing unaligned access.
1996 2005-01-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1997 * pbuf.c: Fixed missing semicolon after LWIP_DEBUG statement.
1999 2005-01-03 Leon Woestenberg <leon.woestenberg@gmx.net>
2000 * udp.c: UDP pcb->recv() was called even when it was NULL.
2004 2004-12-28 Leon Woestenberg <leon.woestenberg@gmx.net>
2005 * etharp.*: Disabled multiple packets on the ARP queue.
2006 This clashes with TCP queueing.
2008 2004-11-28 Leon Woestenberg <leon.woestenberg@gmx.net>
2009 * etharp.*: Fixed race condition from ARP request to ARP timeout.
2010 Halved the ARP period, doubled the period counts.
2011 ETHARP_MAX_PENDING now should be at least 2. This prevents
2012 the counter from reaching 0 right away (which would allow
2013 too little time for ARP responses to be received).
2015 2004-11-25 Leon Woestenberg <leon.woestenberg@gmx.net>
2016 * dhcp.c: Decline messages were not multicast but unicast.
2017 * etharp.c: ETHARP_CREATE is renamed to ETHARP_TRY_HARD.
2018 Do not try hard to insert arbitrary packet's source address,
2019 etharp_ip_input() now calls etharp_update() without ETHARP_TRY_HARD.
2020 etharp_query() now always DOES call ETHARP_TRY_HARD so that users
2021 querying an address will see it appear in the cache (DHCP could
2022 suffer from this when a server invalidly gave an in-use address.)
2023 * ipv4/ip_addr.h: Renamed ip_addr_maskcmp() to _netcmp() as we are
2024 comparing network addresses (identifiers), not the network masks
2026 * ipv4/ip_addr.c: ip_addr_isbroadcast() now checks that the given
2027 IP address actually belongs to the network of the given interface.
2029 2004-11-24 Kieran Mansley <kjm25@cam.ac.uk>
2030 * tcp.c: Increment pcb->snd_buf when ACK is received in SYN_SENT state.
2034 2004-10-16 Kieran Mansley <kjm25@cam.ac.uk>
2035 * tcp.c: Add code to tcp_recved() to send an ACK (window update) immediately,
2036 even if one is already pending, if the rcv_wnd is above a threshold
2037 (currently TCP_WND/2). This avoids waiting for a timer to expire to send a
2038 delayed ACK in order to open the window if the stack is only receiving data.
2040 2004-09-12 Kieran Mansley <kjm25@cam.ac.uk>
2041 * tcp*.*: Retransmit time-out handling improvement by Sam Jansen.
2043 2004-08-20 Tony Mountifield <tony@softins.co.uk>
2044 * etharp.c: Make sure the first pbuf queued on an ARP entry
2045 is properly ref counted.
2047 2004-07-27 Tony Mountifield <tony@softins.co.uk>
2048 * debug.h: Added (int) cast in LWIP_DEBUGF() to avoid compiler
2049 warnings about comparison.
2050 * pbuf.c: Stopped compiler complaining of empty if statement
2051 when LWIP_DEBUGF() empty. Closed an unclosed comment.
2052 * tcp.c: Stopped compiler complaining of empty if statement
2053 when LWIP_DEBUGF() empty.
2054 * ip.h Corrected IPH_TOS() macro: returns a byte, so doesn't need htons().
2055 * inet.c: Added a couple of casts to quiet the compiler.
2056 No need to test isascii(c) before isdigit(c) or isxdigit(c).
2058 2004-07-22 Tony Mountifield <tony@softins.co.uk>
2059 * inet.c: Made data types consistent in inet_ntoa().
2060 Added casts for return values of checksum routines, to pacify compiler.
2061 * ip_frag.c, tcp_out.c, sockets.c, pbuf.c
2062 Small corrections to some debugging statements, to pacify compiler.
2064 2004-07-21 Tony Mountifield <tony@softins.co.uk>
2065 * etharp.c: Removed spurious semicolon and added missing end-of-comment.
2066 * ethernetif.c Updated low_level_output() to match prototype for
2067 netif->linkoutput and changed low_level_input() similarly for consistency.
2068 * api_msg.c: Changed recv_raw() from int to u8_t, to match prototype
2069 of raw_recv() in raw.h and so avoid compiler error.
2070 * sockets.c: Added trivial (int) cast to keep compiler happier.
2071 * ip.c, netif.c Changed debug statements to use the tidier ip4_addrN() macros.
2077 2004-07-05 Leon Woestenberg <leon.woestenberg@gmx.net>
2078 * sockets.*: Restructured LWIP_PRIVATE_TIMEVAL. Make sure
2079 your cc.h file defines this either 1 or 0. If non-defined,
2081 * .c: Added <string.h> and <errno.h> includes where used.
2082 * etharp.c: Made some array indices unsigned.
2084 2004-06-27 Leon Woestenberg <leon.woestenberg@gmx.net>
2085 * netif.*: Added netif_set_up()/down().
2086 * dhcp.c: Changes to restart program flow.
2088 2004-05-07 Leon Woestenberg <leon.woestenberg@gmx.net>
2089 * etharp.c: In find_entry(), instead of a list traversal per candidate, do a
2090 single-pass lookup for different candidates. Should exploit locality.
2092 2004-04-29 Leon Woestenberg <leon.woestenberg@gmx.net>
2093 * tcp*.c: Cleaned up source comment documentation for Doxygen processing.
2094 * opt.h: ETHARP_ALWAYS_INSERT option removed to comply with ARP RFC.
2095 * etharp.c: update_arp_entry() only adds new ARP entries when adviced to by
2096 the caller. This deprecates the ETHARP_ALWAYS_INSERT overrule option.
2100 2004-04-27 Leon Woestenberg <leon.woestenberg@gmx.net>
2101 * etharp.c: Applied patch of bug #8708 by Toni Mountifield with a solution
2102 suggested by Timmy Brolin. Fix for 32-bit processors that cannot access
2103 non-aligned 32-bit words, such as soms 32-bit TCP/IP header fields. Fix
2104 is to prefix the 14-bit Ethernet headers with two padding bytes.
2106 2004-04-23 Leon Woestenberg <leon.woestenberg@gmx.net>
2107 * ip_addr.c: Fix in the ip_addr_isbroadcast() check.
2108 * etharp.c: Fixed the case where the packet that initiates the ARP request
2109 is not queued, and gets lost. Fixed the case where the packets destination
2110 address is already known; we now always queue the packet and perform an ARP
2117 * Fixed TCP bug for SYN_SENT to ESTABLISHED state transition.
2118 * Fixed TCP bug in dequeueing of FIN from out of order segment queue.
2119 * Fixed two possible NULL references in rare cases.
2125 * Fixed DHCP which did not include the IP address in DECLINE messages.
2129 * etharp.c has been hauled over a bit.
2135 * Fixed TCP bug induced by bad window resizing with unidirectional TCP traffic.
2136 * Packets sent from ARP queue had invalid source hardware address.
2140 * Pass-by ARP requests do now update the cache.
2144 * No longer dependent on ctype.h.
2145 * New socket options.
2146 * Raw IP pcb support.
2152 * Some debug formatters and casts fixed.
2153 * Numereous fixes in PPP.
2157 * DEBUGF now is LWIP_DEBUGF
2158 * pbuf_dechain() has been re-enabled.
2159 * Mentioned the changed use of CVS branches in README.
2165 * Fixed pool pbuf memory leak in pbuf_alloc().
2166 Occured if not enough PBUF_POOL pbufs for a packet pbuf chain.
2167 Reported by Savin Zlobec.
2169 * PBUF_POOL chains had their tot_len field not set for non-first
2170 pbufs. Fixed in pbuf_alloc().
2174 * Added PPP stack contributed by Marc Boucher
2178 * Now drops short packets for ICMP/UDP/TCP protocols. More robust.
2180 * ARP queueuing now queues the latest packet instead of the first.
2181 This is the RFC recommended behaviour, but can be overridden in
2188 * TCP has been fixed to deal with the new use of the pbuf->ref
2191 * DHCP dhcp_inform() crash bug fixed.
2195 * Removed pbuf_pool_free_cache and pbuf_pool_alloc_cache. Also removed
2196 pbuf_refresh(). This has sped up pbuf pool operations considerably.
2197 Implemented by David Haas.
2203 * The packet buffer implementation has been enhanced to support
2204 zero-copy and copy-on-demand for packet buffers which have their
2205 payloads in application-managed memory.
2206 Implemented by David Haas.
2208 Use PBUF_REF to make a pbuf refer to RAM. lwIP will use zero-copy
2209 if an outgoing packet can be directly sent on the link, or perform
2210 a copy-on-demand when necessary.
2212 The application can safely assume the packet is sent, and the RAM
2213 is available to the application directly after calling udp_send()
2214 or similar function.
2218 * ARP_QUEUEING should now correctly work for all cases, including
2220 Implemented by Leon Woestenberg.
2224 * IP_ADDR_ANY is no longer a NULL pointer. Instead, it is a pointer
2225 to a '0.0.0.0' IP address.
2227 * The packet buffer implementation is changed. The pbuf->ref counter
2228 meaning has changed, and several pbuf functions have been
2229 adapted accordingly.
2231 * netif drivers have to be changed to set the hardware address length field
2232 that must be initialized correctly by the driver (hint: 6 for Ethernet MAC).
2233 See the contrib/ports/c16x cs8900 driver as a driver example.
2235 * netif's have a dhcp field that must be initialized to NULL by the driver.
2236 See the contrib/ports/c16x cs8900 driver as a driver example.
2238 (0.5.x) This file has been unmaintained up to 0.6.1. All changes are
2239 logged in CVS but have not been explained here.
2241 (0.5.3) Changes since version 0.5.2
2245 * memp_malloc(MEMP_API_MSG) could fail with multiple application
2246 threads because it wasn't protected by semaphores.
2250 * struct ip_addr now packed.
2252 * The name of the time variable in arp.c has been changed to ctime
2253 to avoid conflicts with the time() function.
2255 (0.5.2) Changes since version 0.5.1
2259 * A new TCP function, tcp_tmr(), now handles both TCP timers.
2263 * A bug in tcp_parseopt() could cause the stack to hang because of a
2264 malformed TCP option.
2266 * The address of new connections in the accept() function in the BSD
2267 socket library was not handled correctly.
2269 * pbuf_dechain() did not update the ->tot_len field of the tail.
2271 * Aborted TCP connections were not handled correctly in all
2276 * All protocol header structs are now packed.
2278 * The ->len field in the tcp_seg structure now counts the actual
2279 amount of data, and does not add one for SYN and FIN segments.
2281 (0.5.1) Changes since version 0.5.0
2285 * Possible to run as a user process under Linux.
2287 * Preliminary support for cross platform packed structs.
2289 * ARP timer now implemented.
2293 * TCP output queue length was badly initialized when opening
2296 * TCP delayed ACKs were not sent correctly.
2298 * Explicit initialization of BSS segment variables.
2300 * read() in BSD socket library could drop data.
2302 * Problems with memory alignment.
2304 * Situations when all TCP buffers were used could lead to
2307 * TCP MSS option wasn't parsed correctly.
2309 * Problems with UDP checksum calculation.
2311 * IP multicast address tests had endianess problems.
2313 * ARP requests had wrong destination hardware address.
2317 * struct eth_addr changed from u16_t[3] array to u8_t[6].
2319 * A ->linkoutput() member was added to struct netif.
2321 * TCP and UDP ->dest_* struct members where changed to ->remote_*.
2323 * ntoh* macros are now null definitions for big endian CPUs.
2325 (0.5.0) Changes since version 0.4.2
2329 * Redesigned operating system emulation layer to make porting easier.
2331 * Better control over TCP output buffers.
2333 * Documenation added.
2337 * Locking issues in buffer management.
2339 * Bugfixes in the sequential API.
2341 * IP forwarding could cause memory leakage. This has been fixed.
2345 * Directory structure somewhat changed; the core/ tree has been
2348 (0.4.2) Changes since version 0.4.1
2352 * Experimental ARP implementation added.
2354 * Skeleton Ethernet driver added.
2356 * Experimental BSD socket API library added.
2360 * In very intense situations, memory leakage could occur. This has
2365 * Variables named "data" and "code" have been renamed in order to
2366 avoid name conflicts in certain compilers.
2368 * Variable++ have in appliciable cases been translated to ++variable
2369 since some compilers generate better code in the latter case.
2371 (0.4.1) Changes since version 0.4
2375 * TCP: Connection attempts time out earlier than data
2376 transmissions. Nagle algorithm implemented. Push flag set on the
2377 last segment in a burst.
2379 * UDP: experimental support for UDP-Lite extensions.
2383 * TCP: out of order segments were in some cases handled incorrectly,
2384 and this has now been fixed. Delayed acknowledgements was broken
2385 in 0.4, has now been fixed. Binding to an address that is in use
2386 now results in an error. Reset connections sometimes hung an
2387 application; this has been fixed.
2389 * Checksum calculation sometimes failed for chained pbufs with odd
2390 lengths. This has been fixed.
2392 * API: a lot of bug fixes in the API. The UDP API has been improved
2393 and tested. Error reporting and handling has been
2394 improved. Logical flaws and race conditions for incoming TCP
2395 connections has been found and removed.
2397 * Memory manager: alignment issues. Reallocating memory sometimes
2398 failed, this has been fixed.
2400 * Generic library: bcopy was flawed and has been fixed.
2404 * API: all datatypes has been changed from generic ones such as
2405 ints, to specified ones such as u16_t. Functions that return
2406 errors now have the correct type (err_t).
2408 * General: A lot of code cleaned up and debugging code removed. Many
2409 portability issues have been fixed.
2411 * The license was changed; the advertising clause was removed.
2415 * Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri
2416 Kosunen, Mikael Caleres, and Frits Wilmink for reporting and
2419 (0.4) Changes since version 0.3.1
2421 * Memory management has been radically changed; instead of
2422 allocating memory from a shared heap, memory for objects that are
2423 rapidly allocated and deallocated is now kept in pools. Allocation
2424 and deallocation from those memory pools is very fast. The shared
2425 heap is still present but is used less frequently.
2427 * The memory, memory pool, and packet buffer subsystems now support
2428 4-, 2-, or 1-byte alignment.
2430 * "Out of memory" situations are handled in a more robust way.
2432 * Stack usage has been reduced.
2434 * Easier configuration of lwIP parameters such as memory usage,
2435 TTLs, statistics gathering, etc. All configuration parameters are
2436 now kept in a single header file "lwipopts.h".
2438 * The directory structure has been changed slightly so that all
2439 architecture specific files are kept under the src/arch
2442 * Error propagation has been improved, both in the protocol modules
2445 * The code for the RTXC architecture has been implemented, tested
2448 * Bugs have been found and corrected in the TCP, UDP, IP, API, and
2449 the Internet checksum modules.
2451 * Bugs related to porting between a 32-bit and a 16-bit architecture
2452 have been found and corrected.
2454 * The license has been changed slightly to conform more with the
2455 original BSD license, including the advertisement clause.
2457 (0.3.1) Changes since version 0.3
2459 * Fix of a fatal bug in the buffer management. Pbufs with allocated
2460 RAM never returned the RAM when the pbuf was deallocated.
2462 * TCP congestion control, window updates and retransmissions did not
2463 work correctly. This has now been fixed.
2465 * Bugfixes in the API.
2467 (0.3) Changes since version 0.2
2469 * New and improved directory structure. All include files are now
2470 kept in a dedicated include/ directory.
2472 * The API now has proper error handling. A new function,
2473 netconn_err(), now returns an error code for the connection in
2476 * Improvements in the memory management subsystem. The system now
2477 keeps a pointer to the lowest free memory block. A new function,
2478 mem_malloc2() tries to allocate memory once, and if it fails tries
2479 to free some memory and retry the allocation.
2481 * Much testing has been done with limited memory
2482 configurations. lwIP now does a better job when overloaded.
2484 * Some bugfixes and improvements to the buffer (pbuf) subsystem.
2486 * Many bugfixes in the TCP code:
2488 - Fixed a bug in tcp_close().
2490 - The TCP receive window was incorrectly closed when out of
2491 sequence segments was received. This has been fixed.
2493 - Connections are now timed-out of the FIN-WAIT-2 state.
2495 - The initial congestion window could in some cases be too
2496 large. This has been fixed.
2498 - The retransmission queue could in some cases be screwed up. This
2501 - TCP RST flag now handled correctly.
2503 - Out of sequence data was in some cases never delivered to the
2504 application. This has been fixed.
2506 - Retransmitted segments now contain the correct acknowledgment
2507 number and advertised window.
2509 - TCP retransmission timeout backoffs are not correctly computed
2510 (ala BSD). After a number of retransmissions, TCP now gives up
2513 * TCP connections now are kept on three lists, one for active
2514 connections, one for listening connections, and one for
2515 connections that are in TIME-WAIT. This greatly speeds up the fast
2516 timeout processing for sending delayed ACKs.
2518 * TCP now provides proper feedback to the application when a
2519 connection has been successfully set up.
2521 * More comments have been added to the code. The code has also been
2522 somewhat cleaned up.
2524 (0.2) Initial public release.