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]
29 2009-05-10 Simon Goldschmidt
30 * opt.h, sockets.c, pbuf.c, netbuf.h, pbuf.h: task #7013: Added option
31 LWIP_NETIF_TX_SINGLE_PBUF to try to create transmit packets from only
32 one pbuf to help MACs that don't support scatter-gather DMA.
34 2009-05-09 Simon Goldschmidt
35 * icmp.h, icmp.c: Shrinked ICMP code, added option to NOT check icoming
36 ECHO pbuf for size (just use it): LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN
38 2009-05-05 Simon Goldschmidt, Jakob Stoklund Olesen
39 * ip.h, ip.c: Added ip_current_netif() & ip_current_header() to receive
40 extended info about the currently received packet.
42 2009-04-27 Simon Goldschmidt
43 * sys.h: Made SYS_LIGHTWEIGHT_PROT and sys_now() work with NO_SYS=1
45 2009-04-25 Simon Goldschmidt
46 * mem.c, opt.h: Added option MEM_USE_POOLS_TRY_BIGGER_POOL to try the next
47 bigger malloc pool if one is empty (only usable with MEM_USE_POOLS).
49 2009-04-21 Simon Goldschmidt
50 * dns.c, init.c, dns.h, opt.h: task #7507, patch #6786: DNS supports static
51 hosts table. New configuration options DNS_LOCAL_HOSTLIST and
52 DNS_LOCAL_HOSTLIST_IS_DYNAMIC. Also, DNS_LOOKUP_LOCAL_EXTERN() can be defined
53 as an external function for lookup.
55 2009-04-15 Simon Goldschmidt
56 * dhcp.c: patch #6763: Global DHCP XID can be redefined to something more unique
58 2009-03-31 Kieran Mansley
59 * tcp.c, tcp_out.c, tcp_in.c, sys.h, tcp.h, opts.h: add support for
60 TCP timestamp options, off by default. Rework tcp_enqueue() to
61 take option flags rather than specified option data
63 2009-02-18 Simon Goldschmidt
64 * cc.h: Added printf formatter for size_t: SZT_F
66 2009-02-16 Simon Goldschmidt (patch by Rishi Khan)
67 * icmp.c, opt.h: patch #6539: (configurable) response to broadcast- and multicast
70 2009-02-12 Simon Goldschmidt
71 * init.h: Added LWIP_VERSION to get the current version of the stack
73 2009-02-11 Simon Goldschmidt (suggested by Gottfried Spitaler)
74 * opt.h, memp.h/.c: added MEMP_MEM_MALLOC to use mem_malloc/mem_free instead
75 of the pool allocator (can save code size with MEM_LIBC_MALLOC if libc-malloc
78 2009-01-28 Jonathan Larmour (suggested by Bill Bauerbach)
79 * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h: inet_chksum_pseudo_partial()
80 is only used by UDPLITE at present, so conditionalise it.
82 2008-12-03 Simon Goldschmidt (base on patch from Luca Ceresoli)
83 * autoip.c: checked in (slightly modified) patch #6683: Customizable AUTOIP
84 "seed" address. This should reduce AUTOIP conflicts if
85 LWIP_AUTOIP_CREATE_SEED_ADDR is overridden.
87 2008-10-02 Jonathan Larmour and Rishi Khan
88 * sockets.c (lwip_accept): Return EWOULDBLOCK if would block on non-blocking
91 2008-06-30 Simon Goldschmidt
92 * mem.c, opt.h, stats.h: fixed bug #21433: Calling mem_free/pbuf_free from
93 interrupt context isn't safe: LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT allows
94 mem_free to run between mem_malloc iterations. Added illegal counter for
97 2008-06-27 Simon Goldschmidt
98 * stats.h/.c, some other files: patch #6483: stats module improvement:
99 Added defines to display each module's statistic individually, added stats
100 defines for MEM, MEMP and SYS modules, removed (unused) rexmit counter.
102 2008-06-17 Simon Goldschmidt
103 * err.h: patch #6459: Made err_t overridable to use a more efficient type
104 (define LWIP_ERR_T in cc.h)
106 2008-06-17 Simon Goldschmidt
107 * slipif.c: patch #6480: Added a configuration option for slipif for symmetry
110 2008-06-17 Simon Goldschmidt (patch by Luca Ceresoli)
111 * netif.c, loopif.c, ip.c, netif.h, loopif.h, opt.h: Checked in slightly
112 modified version of patch # 6370: Moved loopif code to netif.c so that
113 loopback traffic is supported on all netifs (all local IPs).
114 Added option to limit loopback packets for each netifs.
118 2009-08-12 Kieran Mansley
119 * tcp_in.c, tcp.c: Fix bug #27209: handle trimming of segments when
120 out of window or out of order properly
122 2009-08-12 Kieran Mansley
123 * tcp_in.c: Fix bug #27199: use snd_wl2 instead of snd_wl1
125 2009-07-28 Simon Goldschmidt
126 * mem.h: Fixed bug #27105: "realloc() cannot replace mem_realloc()"s
128 2009-07-27 Kieran Mansley
129 * api.h api_msg.h netdb.h sockets.h: add missing #include directives
131 2009-07-09 Kieran Mansley
132 * api_msg.c, sockets.c, api.h: BUG23240 use signed counters for
133 recv_avail and don't increment counters until message successfully
136 2009-06-25 Kieran Mansley
137 * api_msg.c api.h: BUG26722: initialise netconn write variables
140 2009-06-25 Kieran Mansley
141 * tcp.h: BUG26879: set ret value in TCP_EVENT macros when function is not set
143 2009-06-25 Kieran Mansley
144 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: BUG26301 and BUG26267: correct
145 simultaneous close behaviour, and make snd_nxt have the same meaning
148 2009-05-12 Simon Goldschmidt
149 * etharp.h, etharp.c, netif.c: fixed bug #26507: "Gratuitous ARP depends on
150 arp_table / uses etharp_query" by adding etharp_gratuitous()
152 2009-05-12 Simon Goldschmidt
153 * ip.h, ip.c, igmp.c: bug #26487: Added ip_output_if_opt that can add IP options
154 to the IP header (used by igmp_ip_output_if)
156 2009-05-06 Simon Goldschmidt
157 * inet_chksum.c: On little endian architectures, use LWIP_PLATFORM_HTONS (if
158 defined) for SWAP_BYTES_IN_WORD to speed up checksumming.
160 2009-05-05 Simon Goldschmidt
161 * sockets.c: bug #26405: Prematurely released semaphore causes lwip_select()
164 2009-05-04 Simon Goldschmidt
165 * init.c: snmp was not initialized in lwip_init()
167 2009-05-04 Frédéric Bernon
168 * dhcp.c, netbios.c: Changes if IP_SOF_BROADCAST is enabled.
170 2009-05-03 Simon Goldschmidt
171 * tcp.h: bug #26349: Nagle algorithm doesn't send although segment is full
172 (and unsent->next == NULL)
174 2009-05-02 Simon Goldschmidt
175 * tcpip.h, tcpip.c: fixed tcpip_untimeout (does not need the time, broken after
176 1.3.0 in CVS only) - fixes compilation of ppp_oe.c
178 2009-05-02 Simon Goldschmidt
179 * msg_in.c: fixed bug #25636: SNMPSET value is ignored for integer fields
181 2009-05-01 Simon Goldschmidt
182 * pap.c: bug #21680: PPP upap_rauthnak() drops legal NAK packets
184 2009-05-01 Simon Goldschmidt
185 * ppp.c: bug #24228: Memory corruption with PPP and DHCP
187 2009-04-29 Frédéric Bernon
188 * raw.c, udp.c, init.c, opt.h, ip.h, sockets.h: bug #26309: Implement the
189 SO(F)_BROADCAST filter for all API layers. Avoid the unindented reception
190 of broadcast packets even when this option wasn't set. Port maintainers
191 which want to enable this filter have to set IP_SOF_BROADCAST=1 in opt.h.
192 If you want this option also filter broadcast on recv operations, you also
193 have to set IP_SOF_BROADCAST_RECV=1 in opt.h.
195 2009-04-28 Simon Goldschmidt, Jakob Stoklund Olesen
196 * dhcp.c: patch #6721, bugs #25575, #25576: Some small fixes to DHCP and
197 DHCP/AUTOIP cooperation
199 2009-04-25 Simon Goldschmidt, Oleg Tyshev
200 * tcp_out.c: bug #24212: Deadlocked tcp_retransmit due to exceeded pcb->cwnd
201 Fixed by sorting the unsent and unacked queues (segments are inserted at the
202 right place in tcp_output and tcp_rexmit).
204 2009-04-25 Simon Goldschmidt
205 * memp.c, mem.c, memp.h, mem_std.h: bug #26213 "Problem with memory allocation
206 when debugging": memp_sizes contained the wrong sizes (including sanity
207 regions); memp pools for MEM_USE_POOLS were too small
209 2009-04-24 Simon Goldschmidt, Frédéric Bernon
210 * inet.c: patch #6765: Fix a small problem with the last changes (incorrect
211 behavior, with with ip address string not ended by a '\0', a space or a
214 2009-04-19 Simon Goldschmidt
215 * rawapi.txt: Fixed bug #26069: Corrected documentation: if tcp_connect fails,
216 pcb->err is called, not pcb->connected (with an error code).
218 2009-04-19 Simon Goldschmidt
219 * tcp_out.c: Fixed bug #26236: "TCP options (timestamp) don't work with
220 no-copy-tcpwrite": deallocate option data, only concat segments with same flags
222 2009-04-19 Simon Goldschmidt
223 * tcp_out.c: Fixed bug #25094: "Zero-length pbuf" (options are now allocated
224 in the header pbuf, not the data pbuf)
226 2009-04-18 Simon Goldschmidt
227 * api_msg.c: fixed bug #25695: Segmentation fault in do_writemore()
229 2009-04-15 Simon Goldschmidt
230 * sockets.c: tried to fix bug #23559: lwip_recvfrom problem with tcp
232 2009-04-15 Simon Goldschmidt
233 * dhcp.c: task #9192: mem_free of dhcp->options_in and dhcp->msg_in
235 2009-04-15 Simon Goldschmidt
236 * ip.c, ip6.c, tcp_out.c, ip.h: patch #6808: Add a utility function
237 ip_hinted_output() (for smaller code mainly)
239 2009-04-15 Simon Goldschmidt
240 * inet.c: patch #6765: Supporting new line characters in inet_aton()
242 2009-04-15 Simon Goldschmidt
243 * dhcp.c: patch #6764: DHCP rebind and renew did not send hostnam option;
244 Converted constant OPTION_MAX_MSG_SIZE to netif->mtu, check if netif->mtu
245 is big enough in dhcp_start
247 2009-04-15 Simon Goldschmidt
248 * netbuf.c: bug #26027: netbuf_chain resulted in pbuf memory leak
250 2009-04-15 Simon Goldschmidt
251 * sockets.c, ppp.c: bug #25763: corrected 4 occurrences of SMEMCPY to MEMCPY
253 2009-04-15 Simon Goldschmidt
254 * sockets.c: bug #26121: set_errno can be overridden
256 2009-04-09 Kieran Mansley (patch from Luca Ceresoli <lucaceresoli>)
257 * init.c, opt.h: Patch#6774 TCP_QUEUE_OOSEQ breaks compilation when
260 2009-04-09 Kieran Mansley (patch from Roy Lee <roylee17>)
261 * tcp.h: Patch#6802 Add do-while-clauses to those function like
264 2009-03-31 Kieran Mansley
265 * tcp.c, tcp_in.c, tcp_out.c, tcp.h, opt.h: Rework the way window
266 updates are calculated and sent (BUG20515)
268 * tcp_in.c: cope with SYN packets received during established states,
269 and retransmission of initial SYN.
271 * tcp_out.c: set push bit correctly when tcp segments are merged
273 2009-03-27 Kieran Mansley
274 * tcp_out.c set window correctly on probes (correcting change made
277 2009-03-26 Kieran Mansley
278 * tcp.c, tcp_in.c, tcp.h: add tcp_abandon() to cope with dropping
279 connections where no reset required (bug #25622)
281 * tcp_out.c: set TCP_ACK flag on keepalive and zero window probes
284 2009-02-18 Simon Goldschmidt (Jonathan Larmour and Bill Auerbach)
285 * ip_frag.c: patch #6528: the buffer used for IP_FRAG_USES_STATIC_BUF could be
286 too small depending on MEM_ALIGNMENT
288 2009-02-16 Simon Goldschmidt
289 * sockets.h/.c, api_*.h/.c: fixed arguments of socket functions to match the standard;
290 converted size argument of netconn_write to 'size_t'
292 2009-02-16 Simon Goldschmidt
293 * tcp.h, tcp.c: fixed bug #24440: TCP connection close problem on 64-bit host
294 by moving accept callback function pointer to TCP_PCB_COMMON
296 2009-02-12 Simon Goldschmidt
297 * dhcp.c: fixed bug #25345 (DHCPDECLINE is sent with "Maximum message size"
300 2009-02-11 Simon Goldschmidt
301 * dhcp.c: fixed bug #24480 (releasing old udp_pdb and pbuf in dhcp_start)
303 2009-02-11 Simon Goldschmidt
304 * opt.h, api_msg.c: added configurable default valud for netconn->recv_bufsize:
305 RECV_BUFSIZE_DEFAULT (fixes bug #23726: pbuf pool exhaustion on slow recv())
307 2009-02-10 Simon Goldschmidt
308 * tcp.c: fixed bug #25467: Listen backlog is not reset on timeout in SYN_RCVD:
309 Accepts_pending is decrease on a corresponding listen pcb when a connection
310 in state SYN_RCVD is close.
312 2009-01-28 Jonathan Larmour
313 * pbuf.c: reclaim pbufs from TCP out-of-sequence segments if we run
316 2008-12-19 Simon Goldschmidt
317 * many files: patch #6699: fixed some warnings on platform where sizeof(int) == 2
319 2008-12-10 Tamas Somogyi, Frédéric Bernon
320 * sockets.c: fixed bug #25051: lwip_recvfrom problem with udp: fromaddr and
321 port uses deleted netbuf.
323 2008-10-18 Simon Goldschmidt
324 * tcp_in.c: fixed bug ##24596: Vulnerability on faulty TCP options length
327 2008-10-15 Simon Goldschmidt
328 * ip_frag.c: fixed bug #24517: IP reassembly crashes on unaligned IP headers
329 by packing the struct ip_reass_helper.
331 2008-10-03 David Woodhouse, Jonathan Larmour
332 * etharp.c (etharp_arp_input): Fix type aliasing problem copying ip address.
334 2008-10-02 Jonathan Larmour
335 * dns.c: Hard-code structure sizes, to avoid issues on some compilers where
338 2008-09-30 Jonathan Larmour
339 * sockets.c (lwip_accept): check addr isn't NULL. If it's valid, do an
340 assertion check that addrlen isn't NULL.
342 2008-09-30 Jonathan Larmour
343 * tcp.c: Fix bug #24227, wrong error message in tcp_bind.
345 2008-08-26 Simon Goldschmidt
346 * inet.h, ip_addr.h: fixed bug #24132: Cross-dependency between ip_addr.h and
347 inet.h -> moved declaration of struct in_addr from ip_addr.h to inet.h
349 2008-08-14 Simon Goldschmidt
350 * api_msg.c: fixed bug #23847: do_close_internal references freed memory (when
351 tcp_close returns != ERR_OK)
353 2008-07-08 Frédéric Bernon
354 * stats.h: Fix some build bugs introduced with patch #6483 (missing some parameters
355 in macros, mainly if MEM_STATS=0 and MEMP_STATS=0).
357 2008-06-24 Jonathan Larmour
358 * tcp_in.c: Fix for bug #23693 as suggested by Art R. Ensure cseg is unused
359 if tcp_seg_copy fails.
361 2008-06-17 Simon Goldschmidt
362 * inet_chksum.c: Checked in some ideas of patch #6460 (loop optimizations)
363 and created defines for swapping bytes and folding u32 to u16.
365 2008-05-30 Kieran Mansley
366 * tcp_in.c Remove redundant "if" statement, and use real rcv_wnd
367 rather than rcv_ann_wnd when deciding if packets are in-window.
368 Contributed by <arasmussen@consultant.datasys.swri.edu>
370 2008-05-30 Kieran Mansley
371 * mem.h: Fix BUG#23254. Change macro definition of mem_* to allow
372 passing as function pointers when MEM_LIBC_MALLOC is defined.
374 2008-05-09 Jonathan Larmour
375 * err.h, err.c, sockets.c: Fix bug #23119: Reorder timeout error code to
376 stop it being treated as a fatal error.
378 2008-04-15 Simon Goldschmidt
379 * dhcp.c: fixed bug #22804: dhcp_stop doesn't clear NETIF_FLAG_DHCP
382 2008-03-27 Simon Goldschmidt
383 * mem.c, tcpip.c, tcpip.h, opt.h: fixed bug #21433 (Calling mem_free/pbuf_free
384 from interrupt context isn't safe): set LWIP_USE_HEAP_FROM_INTERRUPT to 1
385 in lwipopts.h or use pbuf_free_callback(p)/mem_free_callback(m) to free pbufs
386 or heap memory from interrupt context
388 2008-03-26 Simon Goldschmidt
389 * tcp_in.c, tcp.c: fixed bug #22249: division by zero could occur if a remote
390 host sent a zero mss as TCP option.
397 2008-03-10 Jonathan Larmour
398 * inet_chksum.c: Allow choice of one of the sample algorithms to be
399 made from lwipopts.h. Fix comment on how to override LWIP_CHKSUM.
401 2008-01-22 Frédéric Bernon
402 * tcp.c, tcp_in.c, tcp.h, opt.h: Rename LWIP_CALCULATE_EFF_SEND_MSS in
403 TCP_CALCULATE_EFF_SEND_MSS to have coherent TCP options names.
405 2008-01-14 Frédéric Bernon
406 * rawapi.txt, api_msg.c, tcp.c, tcp_in.c, tcp.h: changes for task #7675 "Enable
407 to refuse data on a TCP_EVENT_RECV call". Important, behavior changes for the
408 tcp_recv callback (see rawapi.txt).
410 2008-01-14 Frédéric Bernon, Marc Chaland
411 * ip.c: Integrate patch #6369" ip_input : checking before realloc".
413 2008-01-12 Frédéric Bernon
414 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
415 netconn::sem per netconn::op_completed like suggested for the task #7490
416 "Add return value to sys_mbox_post".
418 2008-01-12 Frédéric Bernon
419 * api_msg.c, opt.h: replace DEFAULT_RECVMBOX_SIZE per DEFAULT_TCP_RECVMBOX_SIZE,
420 DEFAULT_UDP_RECVMBOX_SIZE and DEFAULT_RAW_RECVMBOX_SIZE (to optimize queues
421 sizes), like suggested for the task #7490 "Add return value to sys_mbox_post".
423 2008-01-10 Frédéric Bernon
424 * tcpip.h, tcpip.c: add tcpip_callback_with_block function for the task #7490
425 "Add return value to sys_mbox_post". tcpip_callback is always defined as
426 "blocking" ("block" parameter = 1).
428 2008-01-10 Frédéric Bernon
429 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
430 netconn::mbox (sys_mbox_t) per netconn::sem (sys_sem_t) for the task #7490
431 "Add return value to sys_mbox_post".
433 2008-01-05 Frédéric Bernon
434 * sys_arch.txt, api.h, api_lib.c, api_msg.h, api_msg.c, tcpip.c, sys.h, opt.h:
435 Introduce changes for task #7490 "Add return value to sys_mbox_post" with some
436 modifications in the sys_mbox api: sys_mbox_new take a "size" parameters which
437 indicate the number of pointers query by the mailbox. There is three defines
438 in opt.h to indicate sizes for tcpip::mbox, netconn::recvmbox, and for the
439 netconn::acceptmbox. Port maintainers, you can decide to just add this new
440 parameter in your implementation, but to ignore it to keep the previous behavior.
441 The new sys_mbox_trypost function return a value to know if the mailbox is
442 full or if the message is posted. Take a look to sys_arch.txt for more details.
443 This new function is used in tcpip_input (so, can be called in an interrupt
444 context since the function is not blocking), and in recv_udp and recv_raw.
446 2008-01-04 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
447 * rawapi.txt, api.h, api_lib.c, api_msg.h, api_msg.c, sockets.c, tcp.h, tcp.c,
448 tcp_in.c, init.c, opt.h: rename backlog options with TCP_ prefix, limit the
449 "backlog" parameter in an u8_t, 0 is interpreted as "smallest queue", add
450 documentation in the rawapi.txt file.
452 2007-12-31 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
453 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Add TCP persist timer
455 2007-12-31 Frédéric Bernon, Luca Ceresoli
456 * autoip.c, etharp.c: ip_addr.h: Integrate patch #6348: "Broadcast ARP packets
457 in autoip". The change in etharp_raw could be removed, since all calls to
458 etharp_raw use ethbroadcast for the "ethdst_addr" parameter. But it could be
461 2007-12-30 Frédéric Bernon, Tom Evans
462 * ip.c: Fix bug #21846 "LwIP doesn't appear to perform any IP Source Address
463 Filtering" reported by Tom Evans.
465 2007-12-21 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
466 * tcp.h, opt.h, api.h, api_msg.h, tcp.c, tcp_in.c, api_lib.c, api_msg.c,
467 sockets.c, init.c: task #7252: Implement TCP listen backlog: Warning: raw API
468 applications have to call 'tcp_accepted(pcb)' in their accept callback to
469 keep accepting new connections.
471 2007-12-13 Frédéric Bernon
472 * api_msg.c, err.h, err.c, sockets.c, dns.c, dns.h: replace "enum dns_result"
473 by err_t type. Add a new err_t code "ERR_INPROGRESS".
475 2007-12-12 Frédéric Bernon
476 * dns.h, dns.c, opt.h: move DNS options to the "right" place. Most visibles
477 are the one which have ram usage.
479 2007-12-05 Frédéric Bernon
480 * netdb.c: add a LWIP_DNS_API_HOSTENT_STORAGE option to decide to use a static
481 set of variables (=0) or a local one (=1). In this last case, your port should
482 provide a function "struct hostent* sys_thread_hostent( struct hostent* h)"
483 which have to do a copy of "h" and return a pointer ont the "per-thread" copy.
485 2007-12-03 Simon Goldschmidt
486 * ip.c: ip_input: check if a packet is for inp first before checking all other
487 netifs on netif_list (speeds up packet receiving in most cases)
489 2007-11-30 Simon Goldschmidt
490 * udp.c, raw.c: task #7497: Sort lists (pcb, netif, ...) for faster access
491 UDP: move a (connected) pcb selected for input to the front of the list of
492 pcbs so that it is found faster next time. Same for RAW pcbs that have eaten
495 2007-11-28 Simon Goldschmidt
496 * etharp.c, stats.c, stats.h, opt.h: Introduced ETHARP_STATS
498 2007-11-25 Simon Goldschmidt
499 * dhcp.c: dhcp_unfold_reply() uses pbuf_copy_partial instead of its own copy
502 2007-11-24 Simon Goldschmidt
503 * netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c
504 to the new file netdb.c; included lwip_getaddrinfo.
506 2007-11-21 Simon Goldschmidt
507 * tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
508 based on the MTU of the netif used to send. Enabled by default. Disable by
509 setting LWIP_CALCULATE_EFF_SEND_MSS to 0. This fixes bug #21492.
511 2007-11-19 Frédéric Bernon
512 * api_msg.c, dns.h, dns.c: Implement DNS_DOES_NAME_CHECK option (check if name
513 received match the name query), implement DNS_USES_STATIC_BUF (the place where
514 copy dns payload to parse the response), return an error if there is no place
515 for a new query, and fix some minor problems.
517 2007-11-16 Simon Goldschmidt
518 * new files: ipv4/inet.c, ipv4/inet_chksum.c, ipv6/inet6.c
519 removed files: core/inet.c, core/inet6.c
520 Moved inet files into ipv4/ipv6 directory; splitted inet.c/inet.h into
521 inet and chksum part; changed includes in all lwIP files as appropriate
523 2007-11-16 Simon Goldschmidt
524 * api.h, api_msg.h, api_lib.c, api_msg.c, socket.h, socket.c: Added sequential
525 dns resolver function for netconn api (netconn_gethostbyname) and socket api
526 (gethostbyname/gethostbyname_r).
528 2007-11-15 Jim Pettinato, Frédéric Bernon
529 * opt.h, init.c, tcpip.c, dhcp.c, dns.h, dns.c: add DNS client for simple name
530 requests with RAW api interface. Initialization is done in lwip_init() with
531 build time options. DNS timer is added in tcpip_thread context. DHCP can set
532 DNS server ip addresses when options are received. You need to set LWIP_DNS=1
533 in your lwipopts.h file (LWIP_DNS=0 in opt.h). DNS_DEBUG can be set to get
534 some traces with LWIP_DEBUGF. Sanity check have been added. There is a "todo"
535 list with points to improve.
537 2007-11-06 Simon Goldschmidt
538 * opt.h, mib2.c: Patch #6215: added ifAdminStatus write support (if explicitly
539 enabled by defining SNMP_SAFE_REQUESTS to 0); added code to check link status
540 for ifOperStatus if LWIP_NETIF_LINK_CALLBACK is defined.
542 2007-11-06 Simon Goldschmidt
543 * api.h, api_msg.h and dependent files: Task #7410: Removed the need to include
544 core header files in api.h (ip/tcp/udp/raw.h) to hide the internal
545 implementation from netconn api applications.
547 2007-11-03 Frédéric Bernon
548 * api.h, api_lib.c, api_msg.c, sockets.c, opt.h: add SO_RCVBUF option for UDP &
549 RAW netconn. You need to set LWIP_SO_RCVBUF=1 in your lwipopts.h (it's disabled
550 by default). Netconn API users can use the netconn_recv_bufsize macro to access
551 it. This is a first release which have to be improve for TCP. Note it used the
552 netconn::recv_avail which need to be more "thread-safe" (note there is already
553 the problem for FIONREAD with lwip_ioctl/ioctlsocket).
555 2007-11-01 Frédéric Bernon, Marc Chaland
556 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, tcp.h, tcp_out.c:
557 Integrate "patch #6250 : MSG_MORE flag for send". MSG_MORE is used at socket api
558 layer, NETCONN_MORE at netconn api layer, and TCP_WRITE_FLAG_MORE at raw api
559 layer. This option enable to delayed TCP PUSH flag on multiple "write" calls.
560 Note that previous "copy" parameter for "write" APIs is now called "apiflags".
562 2007-10-24 Frédéric Bernon
563 * api.h, api_lib.c, api_msg.c: Add macro API_EVENT in the same spirit than
564 TCP_EVENT_xxx macros to get a code more readable. It could also help to remove
565 some code (like we have talk in "patch #5919 : Create compile switch to remove
566 select code"), but it could be done later.
568 2007-10-08 Simon Goldschmidt
569 * many files: Changed initialization: many init functions are not needed any
570 more since we now rely on the compiler initializing global and static
573 2007-10-06 Simon Goldschmidt
574 * ip_frag.c, memp.c, mib2.c, ip_frag.h, memp_std.h, opt.h: Changed IP_REASSEMBLY
575 to enqueue the received pbufs so that multiple packets can be reassembled
576 simultaneously and no static reassembly buffer is needed.
578 2007-10-05 Simon Goldschmidt
579 * tcpip.c, etharp.h, etharp.c: moved ethernet_input from tcpip.c to etharp.c so
580 all netifs (or ports) can use it.
582 2007-10-05 Frédéric Bernon
583 * netifapi.h, netifapi.c: add function netifapi_netif_set_default. Change the
584 common function to reduce a little bit the footprint (for all functions using
585 only the "netif" parameter).
587 2007-10-03 Frédéric Bernon
588 * netifapi.h, netifapi.c: add functions netifapi_netif_set_up, netifapi_netif_set_down,
589 netifapi_autoip_start and netifapi_autoip_stop. Use a common function to reduce
590 a little bit the footprint (for all functions using only the "netif" parameter).
592 2007-09-15 Frédéric Bernon
593 * udp.h, udp.c, sockets.c: Changes for "#20503 IGMP Improvement". Add IP_MULTICAST_IF
594 option in socket API, and a new field "multicast_ip" in "struct udp_pcb" (for
595 netconn and raw API users), only if LWIP_IGMP=1. Add getsockopt processing for
596 IP_MULTICAST_TTL and IP_MULTICAST_IF.
598 2007-09-10 Frédéric Bernon
599 * snmp.h, mib2.c: enable to remove SNMP timer (which consumne several cycles
600 even when it's not necessary). snmp_agent.txt tell to call snmp_inc_sysuptime()
601 each 10ms (but, it's intrusive if you use sys_timeout feature). Now, you can
602 decide to call snmp_add_sysuptime(100) each 1000ms (which is bigger "step", but
603 call to a lower frequency). Or, you can decide to not call snmp_inc_sysuptime()
604 or snmp_add_sysuptime(), and to define the SNMP_GET_SYSUPTIME(sysuptime) macro.
605 This one is undefined by default in mib2.c. SNMP_GET_SYSUPTIME is called inside
606 snmp_get_sysuptime(u32_t *value), and enable to change "sysuptime" value only
607 when it's queried (any direct call to "sysuptime" is changed by a call to
610 2007-09-09 Frédéric Bernon, Bill Florac
611 * igmp.h, igmp.c, netif.h, netif.c, ip.c: To enable to have interfaces with IGMP,
612 and others without it, there is a new NETIF_FLAG_IGMP flag to set in netif->flags
613 if you want IGMP on an interface. igmp_stop() is now called inside netif_remove().
614 igmp_report_groups() is now called inside netif_set_link_up() (need to have
615 LWIP_NETIF_LINK_CALLBACK=1) to resend reports once the link is up (avoid to wait
616 the next query message to receive the matching multicast streams).
618 2007-09-08 Frédéric Bernon
619 * sockets.c, ip.h, api.h, tcp.h: declare a "struct ip_pcb" which only contains
620 IP_PCB. Add in the netconn's "pcb" union a "struct ip_pcb *ip;" (no size change).
621 Use this new field to access to common pcb fields (ttl, tos, so_options, etc...).
622 Enable to access to these fields with LWIP_TCP=0.
624 2007-09-05 Frédéric Bernon
625 * udp.c, ipv4/icmp.c, ipv4/ip.c, ipv6/icmp.c, ipv6/ip6.c, ipv4/icmp.h,
626 ipv6/icmp.h, opt.h: Integrate "task #7272 : LWIP_ICMP option". The new option
627 LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default).
628 Be careful, disabling ICMP make your product non-compliant to RFC1122, but
629 help to reduce footprint, and to reduce "visibility" on the Internet.
631 2007-09-05 Frédéric Bernon, Bill Florac
632 * opt.h, sys.h, tcpip.c, slipif.c, ppp.c, sys_arch.txt: Change parameters list
633 for sys_thread_new (see "task #7252 : Create sys_thread_new_ex()"). Two new
634 parameters have to be provided: a task name, and a task stack size. For this
635 one, since it's platform dependant, you could define the best one for you in
636 your lwipopts.h. For port maintainers, you can just add these new parameters
637 in your sys_arch.c file, and but it's not mandatory, use them in your OS
640 2007-09-05 Frédéric Bernon
641 * inet.c, autoip.c, msg_in.c, msg_out.c, init.c: Move some build time checkings
642 inside init.c for task #7142 "Sanity check user-configurable values".
644 2007-09-04 Frédéric Bernon, Bill Florac
645 * igmp.h, igmp.c, memp_std.h, memp.c, init.c, opt.h: Replace mem_malloc call by
646 memp_malloc, and use a new MEMP_NUM_IGMP_GROUP option (see opt.h to define the
647 value). It will avoid potential fragmentation problems, use a counter to know
648 how many times a group is used on an netif, and free it when all applications
649 leave it. MEMP_NUM_IGMP_GROUP got 8 as default value (and init.c got a sanity
650 check if LWIP_IGMP!=0).
652 2007-09-03 Frédéric Bernon
653 * igmp.h, igmp.c, sockets.c, api_msg.c: Changes for "#20503 IGMP Improvement".
654 Initialize igmp_mac_filter to NULL in netif_add (this field should be set in
655 the netif's "init" function). Use the "imr_interface" field (for socket layer)
656 and/or the "interface" field (for netconn layer), for join/leave operations.
657 The igmp_join/leavegroup first parameter change from a netif to an ipaddr.
658 This field could be a netif's ipaddr, or "any" (same meaning than ip_addr_isany).
660 2007-08-30 Frédéric Bernon
661 * Add netbuf.h, netbuf.c, Change api.h, api_lib.c: #7249 "Split netbuf functions
662 from api/api_lib". Now netbuf API is independant of netconn, and can be used
663 with other API (application based on raw API, or future "socket2" API). Ports
664 maintainers just have to add src/api/netbuf.c in their makefile/projects.
666 2007-08-30 Frédéric Bernon, Jonathan Larmour
667 * init.c: Add first version of lwip_sanity_check for task #7142 "Sanity check
668 user-configurable values".
670 2007-08-29 Frédéric Bernon
671 * igmp.h, igmp.c, tcpip.c, init.c, netif.c: change igmp_init and add igmp_start.
672 igmp_start is call inside netif_add. Now, igmp initialization is in the same
673 spirit than the others modules. Modify some IGMP debug traces.
675 2007-08-29 Frédéric Bernon
676 * Add init.h, init.c, Change opt.h, tcpip.c: Task #7213 "Add a lwip_init function"
677 Add lwip_init function to regroup all modules initializations, and to provide
678 a place to add code for task #7142 "Sanity check user-configurable values".
679 Ports maintainers should remove direct initializations calls from their code,
680 and add init.c in their makefiles. Note that lwip_init() function is called
681 inside tcpip_init, but can also be used by raw api users since all calls are
682 disabled when matching options are disabled. Also note that their is new options
683 in opt.h, you should configure in your lwipopts.h (they are enabled per default).
685 2007-08-26 Marc Boucher
686 * api_msg.c: do_close_internal(): Reset the callbacks and arg (conn) to NULL
687 since they can under certain circumstances be called with an invalid conn
688 pointer after the connection has been closed (and conn has been freed).
690 2007-08-25 Frédéric Bernon (Artem Migaev's Patch)
691 * netif.h, netif.c: Integrate "patch #6163 : Function to check if link layer is up".
692 Add a netif_is_link_up() function if LWIP_NETIF_LINK_CALLBACK option is set.
694 2007-08-22 Frédéric Bernon
695 * netif.h, netif.c, opt.h: Rename LWIP_NETIF_CALLBACK in LWIP_NETIF_STATUS_CALLBACK
696 to be coherent with new LWIP_NETIF_LINK_CALLBACK option before next release.
698 2007-08-22 Frédéric Bernon
699 * tcpip.h, tcpip.c, ethernetif.c, opt.h: remove options ETHARP_TCPIP_INPUT &
700 ETHARP_TCPIP_ETHINPUT, now, only "ethinput" code is supported, even if the
701 name is tcpip_input (we keep the name of 1.2.0 function).
703 2007-08-17 Jared Grubb
704 * memp_std.h, memp.h, memp.c, mem.c, stats.c: (Task #7136) Centralize mempool
705 settings into new memp_std.h and optional user file lwippools.h. This adds
706 more dynamic mempools, and allows the user to create an arbitrary number of
707 mempools for mem_malloc.
709 2007-08-16 Marc Boucher
710 * api_msg.c: Initialize newconn->state to NETCONN_NONE in accept_function;
711 otherwise it was left to NETCONN_CLOSE and sent_tcp() could prematurely
712 close the connection.
714 2007-08-16 Marc Boucher
715 * sockets.c: lwip_accept(): check netconn_peer() error return.
717 2007-08-16 Marc Boucher
718 * mem.c, mem.h: Added mem_calloc().
720 2007-08-16 Marc Boucher
721 * tcpip.c, tcpip.h memp.c, memp.h: Added distinct memp (MEMP_TCPIP_MSG_INPKT)
722 for input packets to prevent floods from consuming all of MEMP_TCPIP_MSG
723 and starving other message types.
724 Renamed MEMP_TCPIP_MSG to MEMP_TCPIP_MSG_API
726 2007-08-16 Marc Boucher
727 * pbuf.c, pbuf.h, etharp.c, tcp_in.c, sockets.c: Split pbuf flags in pbuf
728 type and flgs (later renamed to flags).
729 Use enum pbuf_flag as pbuf_type. Renumber PBUF_FLAG_*.
730 Improved lwip_recvfrom(). TCP push now propagated.
732 2007-08-16 Marc Boucher
733 * ethernetif.c, contrib/ports/various: ethbroadcast now a shared global
736 2007-08-16 Marc Boucher
737 * ppp_oe.c ppp_oe.h, auth.c chap.c fsm.c lcp.c ppp.c ppp.h,
738 etharp.c ethernetif.c, etharp.h, opt.h tcpip.h, tcpip.c:
739 Added PPPoE support and various PPP improvements.
741 2007-07-25 Simon Goldschmidt
742 * api_lib.c, ip_frag.c, pbuf.c, api.h, pbuf.h: Introduced pbuf_copy_partial,
743 making netbuf_copy_partial use this function.
745 2007-07-25 Simon Goldschmidt
746 * tcp_in.c: Fix bug #20506: Slow start / initial congestion window starts with
747 2 * mss (instead of 1 * mss previously) to comply with some newer RFCs and
750 2007-07-13 Jared Grubb (integrated by Frédéric Bernon)
751 * opt.h, netif.h, netif.c, ethernetif.c: Add new configuration option to add
752 a link callback in the netif struct, and functions to handle it. Be carefull
753 for port maintainers to add the NETIF_FLAG_LINK_UP flag (like in ethernetif.c)
754 if you want to be sure to be compatible with future changes...
756 2007-06-30 Frédéric Bernon
757 * sockets.h, sockets.c: Implement MSG_PEEK flag for recv/recvfrom functions.
759 2007-06-21 Simon Goldschmidt
760 * etharp.h, etharp.c: Combined etharp_request with etharp_raw for both
761 LWIP_AUTOIP =0 and =1 to remove redundant code.
763 2007-06-21 Simon Goldschmidt
764 * mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option
765 MEM_USE_POOLS to use 4 pools with different sized elements instead of a
766 heap. This both prevents memory fragmentation and gives a higher speed
767 at the cost of more memory consumption. Turned off by default.
769 2007-06-21 Simon Goldschmidt
770 * api_lib.c, api_msg.c, api.h, api_msg.h: Converted the length argument of
771 netconn_write (and therefore also api_msg_msg.msg.w.len) from u16_t into
772 int to be able to send a bigger buffer than 64K with one time (mainly
773 used from lwip_send).
775 2007-06-21 Simon Goldschmidt
776 * tcp.h, api_msg.c: Moved the nagle algorithm from netconn_write/do_write
777 into a define (tcp_output_nagle) in tcp.h to provide it to raw api users, too.
779 2007-06-21 Simon Goldschmidt
780 * api.h, api_lib.c, api_msg.c: Fixed bug #20021: Moved sendbuf-processing in
781 netconn_write from api_lib.c to api_msg.c to also prevent multiple context-
782 changes on low memory or empty send-buffer.
784 2007-06-18 Simon Goldschmidt
785 * etharp.c, etharp.h: Changed etharp to use a defined hardware address length
786 of 6 to avoid loading netif->hwaddr_len every time (since this file is only
787 used for ethernet and struct eth_addr already had a defined length of 6).
789 2007-06-17 Simon Goldschmidt
790 * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets
791 to disable UDP checksum generation on transmit.
793 2007-06-13 Frédéric Bernon, Simon Goldschmidt
794 * debug.h, api_msg.c: change LWIP_ERROR to use it to check errors like invalid
795 pointers or parameters, and let the possibility to redefined it in cc.h. Use
796 this macro to check "conn" parameter in api_msg.c functions.
798 2007-06-11 Simon Goldschmidt
799 * sockets.c, sockets.h: Added UDP lite support for sockets
801 2007-06-10 Simon Goldschmidt
802 * udp.h, opt.h, api_msg.c, ip.c, udp.c: Included switch LWIP_UDPLITE (enabled
803 by default) to switch off UDP-Lite support if not needed (reduces udp.c code
806 2007-06-09 Dominik Spies (integrated by Frédéric Bernon)
807 * autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h:
808 AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and
809 LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt
810 (see TODO mark in the source code).
812 2007-06-09 Simon Goldschmidt
813 * etharp.h, etharp.c, ethernetif.c: Modified order of parameters for
814 etharp_output() to match netif->output so etharp_output() can be used
815 directly as netif->output to save one function call.
817 2007-06-08 Simon Goldschmidt
818 * netif.h, ethernetif.c, slipif.c, loopif.c: Added define
819 NETIF_INIT_SNMP(netif, type, speed) to initialize per-netif snmp variables,
820 added initialization of those to ethernetif, slipif and loopif.
822 2007-05-18 Simon Goldschmidt
823 * opt.h, ip_frag.c, ip_frag.h, ip.c: Added option IP_FRAG_USES_STATIC_BUF
824 (defaulting to off for now) that can be set to 0 to send fragmented
825 packets by passing PBUF_REFs down the stack.
827 2007-05-23 Frédéric Bernon
828 * api_lib.c: Implement SO_RCVTIMEO for accept and recv on TCP
829 connections, such present in patch #5959.
831 2007-05-23 Frédéric Bernon
832 * api.h, api_lib.c, api_msg.c, sockets.c: group the different NETCONN_UDPxxx
833 code in only one part...
835 2007-05-18 Simon Goldschmidt
836 * opt.h, memp.h, memp.c: Added option MEMP_OVERFLOW_CHECK to check for memp
837 elements to overflow. This is achieved by adding some bytes before and after
838 each pool element (increasing their size, of course), filling them with a
839 prominent value and checking them on freeing the element.
840 Set it to 2 to also check every element in every pool each time memp_malloc()
841 or memp_free() is called (slower but more helpful).
843 2007-05-10 Simon Goldschmidt
844 * opt.h, memp.h, memp.c, pbuf.c (see task #6831): use a new memp pool for
845 PBUF_POOL pbufs instead of the old pool implementation in pbuf.c to reduce
848 2007-05-11 Frédéric Bernon
849 * sockets.c, api_lib.c, api_msg.h, api_msg.c, netifapi.h, netifapi.c, tcpip.c:
850 Include a function pointer instead of a table index in the message to reduce
851 footprint. Disable some part of lwip_send and lwip_sendto if some options are
852 not set (LWIP_TCP, LWIP_UDP, LWIP_RAW).
854 2007-05-10 Simon Goldschmidt
855 * *.h (except netif/ppp/*.h): Included patch #5448: include '#ifdef __cplusplus
856 \ extern "C" {' in all header files. Now you can write your application using
857 the lwIP stack in C++ and simply #include the core files. Note I have left
858 out the netif/ppp/*h header files for now, since I don't know which files are
859 included by applications and which are for internal use only.
861 2007-05-09 Simon Goldschmidt
862 * opt.h, *.c/*.h: Included patch #5920: Create define to override C-library
863 memcpy. 2 Defines are created: MEMCPY() for normal memcpy, SMEMCPY() for
864 situations where some compilers might inline the copy and save a function
865 call. Also replaced all calls to memcpy() with calls to (S)MEMCPY().
867 2007-05-08 Simon Goldschmidt
868 * mem.h: If MEM_LIBC_MALLOC==1, allow the defines (e.g. mem_malloc() -> malloc())
869 to be overriden in case the C-library malloc implementation is not protected
870 against concurrent access.
872 2007-05-04 Simon Goldschmidt (Atte Kojo)
873 * etharp.c: Introduced fast one-entry-cache to speed up ARP lookup when sending
874 multiple packets to the same host.
876 2007-05-04 Frédéric Bernon, Jonathan Larmour
877 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fix bug #19162 "lwip_sento: a possible
878 to corrupt remote addr/port connection state". Reduce problems "not enought memory" with
879 netbuf (if we receive lot of datagrams). Improve lwip_sendto (only one exchange between
880 sockets api and api_msg which run in tcpip_thread context). Add netconn_sento function.
881 Warning, if you directly access to "fromaddr" & "fromport" field from netbuf struct,
882 these fields are now renamed "addr" & "port".
884 2007-04-11 Jonathan Larmour
885 * sys.h, api_lib.c: Provide new sys_mbox_tryfetch function. Require ports to provide new
886 sys_arch_mbox_tryfetch function to get a message if one is there, otherwise return
887 with SYS_MBOX_EMPTY. sys_arch_mbox_tryfetch can be implemented as a function-like macro
888 by the port in sys_arch.h if desired.
890 2007-04-06 Frédéric Bernon, Simon Goldschmidt
891 * opt.h, tcpip.h, tcpip.c, netifapi.h, netifapi.c: New configuration option LWIP_NETIF_API
892 allow to use thread-safe functions to add/remove netif in list, and to start/stop dhcp
893 clients, using new functions from netifapi.h. Disable as default (no port change to do).
895 2007-04-05 Frédéric Bernon
896 * sockets.c: remplace ENOBUFS errors on alloc_socket by ENFILE to be more BSD compliant.
898 2007-04-04 Simon Goldschmidt
899 * arch.h, api_msg.c, dhcp.c, msg_in.c, sockets.c: Introduced #define LWIP_UNUSED_ARG(x)
900 use this for and architecture-independent form to tell the compiler you intentionally
901 are not using this variable. Can be overriden in cc.h.
903 2007-03-28 Frédéric Bernon
904 * opt.h, netif.h, dhcp.h, dhcp.c: New configuration option LWIP_NETIF_HOSTNAME allow to
905 define a hostname in netif struct (this is just a pointer, so, you can use a hardcoded
906 string, point on one of your's ethernetif field, or alloc a string you will free yourself).
907 It will be used by DHCP to register a client hostname, but can also be use when you call
910 2007-03-28 Frédéric Bernon
911 * netif.h, netif.c: A new NETIF_FLAG_ETHARP flag is defined in netif.h, to allow to
912 initialize a network interface's flag with. It tell this interface is an ethernet
913 device, and we can use ARP with it to do a "gratuitous ARP" (RFC 3220 "IP Mobility
914 Support for IPv4" section 4.6) when interface is "up" with netif_set_up().
916 2007-03-26 Frédéric Bernon, Jonathan Larmour
917 * opt.h, tcpip.c: New configuration option LWIP_ARP allow to disable ARP init at build
918 time if you only use PPP or SLIP. The default is enable. Note we don't have to call
919 etharp_init in your port's initilization sequence if you use tcpip.c, because this call
920 is done in tcpip_init function.
922 2007-03-22 Frédéric Bernon
923 * stats.h, stats.c, msg_in.c: Stats counters can be change to u32_t if necessary with the
924 new option LWIP_STATS_LARGE. If you need this option, define LWIP_STATS_LARGE to 1 in
925 your lwipopts.h. More, unused counters are not defined in the stats structs, and not
926 display by stats_display(). Note that some options (SYS_STATS and RAW_STATS) are defined
927 but never used. Fix msg_in.c with the correct #if test for a stat display.
929 2007-03-21 Kieran Mansley
930 * netif.c, netif.h: Apply patch#4197 with some changes (originator: rireland@hmgsl.com).
931 Provides callback on netif up/down state change.
933 2007-03-11 Frédéric Bernon, Mace Gael, Steve Reynolds
934 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, igmp.h, igmp.c,
935 ip.c, netif.h, tcpip.c, opt.h:
936 New configuration option LWIP_IGMP to enable IGMP processing. Based on only one
937 filter per all network interfaces. Declare a new function in netif to enable to
938 control the MAC filter (to reduce lwIP traffic processing).
940 2007-03-11 Frédéric Bernon
941 * tcp.h, tcp.c, sockets.c, tcp_out.c, tcp_in.c, opt.h: Keepalive values can
942 be configured at run time with LWIP_TCP_KEEPALIVE, but don't change this
943 unless you know what you're doing (default are RFC1122 compliant). Note
944 that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set in seconds.
946 2007-03-08 Frédéric Bernon
947 * tcp.h: Keepalive values can be configured at compile time, but don't change
948 this unless you know what you're doing (default are RFC1122 compliant).
950 2007-03-08 Frédéric Bernon
951 * sockets.c, api.h, api_lib.c, tcpip.c, sys.h, sys.c, err.c, opt.h:
952 Implement LWIP_SO_RCVTIMEO configuration option to enable/disable SO_RCVTIMEO
953 on UDP sockets/netconn.
955 2007-03-08 Simon Goldschmidt
956 * snmp_msg.h, msg_in.c: SNMP UDP ports can be configured at compile time.
958 2007-03-06 Frédéric Bernon
959 * api.h, api_lib.c, sockets.h, sockets.c, tcpip.c, sys.h, sys.c, err.h:
960 Implement SO_RCVTIMEO on UDP sockets/netconn.
962 2007-02-28 Kieran Mansley (based on patch from Simon Goldschmidt)
963 * api_lib.c, tcpip.c, memp.c, memp.h: make API msg structs allocated
964 on the stack and remove the API msg type from memp
966 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
967 * sockets.h, sockets.c: Move socket initialization to new
968 lwip_socket_init() function.
969 NOTE: this changes the API with ports. Ports will have to be
970 updated to call lwip_socket_init() now.
972 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
973 * api_lib.c: Use memcpy in netbuf_copy_partial.
978 2008-03-17 Frédéric Bernon, Ed Kerekes
979 * igmp.h, igmp.c: Fix bug #22613 "IGMP iphdr problem" (could have
980 some problems to fill the IP header on some targets, use now the
981 ip.h macros to do it).
983 2008-03-13 Frédéric Bernon
984 * sockets.c: Fix bug #22435 "lwip_recvfrom with TCP break;". Using
985 (lwip_)recvfrom with valid "from" and "fromlen" parameters, on a
986 TCP connection caused a crash. Note that using (lwip_)recvfrom
987 like this is a bit slow and that using (lwip)getpeername is the
988 good lwip way to do it (so, using recv is faster on tcp sockets).
990 2008-03-12 Frédéric Bernon, Jonathan Larmour
991 * api_msg.c, contrib/apps/ping.c: Fix bug #22530 "api_msg.c's
992 recv_raw() does not consume data", and the ping sample (with
993 LWIP_SOCKET=1, the code did the wrong supposition that lwip_recvfrom
994 returned the IP payload, without the IP header).
996 2008-03-04 Jonathan Larmour
997 * mem.c, stats.c, mem.h: apply patch #6414 to avoid compiler errors
998 and/or warnings on some systems where mem_size_t and size_t differ.
999 * pbuf.c, ppp.c: Fix warnings on some systems with mem_malloc.
1001 2008-03-04 Kieran Mansley (contributions by others)
1002 * Numerous small compiler error/warning fixes from contributions to
1003 mailing list after 1.3.0 release candidate made.
1005 2008-01-25 Cui hengbin (integrated by Frédéric Bernon)
1006 * dns.c: Fix bug #22108 "DNS problem" caused by unaligned structures.
1008 2008-01-15 Kieran Mansley
1009 * tcp_out.c: BUG20511. Modify persist timer to start when we are
1010 prevented from sending by a small send window, not just a zero
1013 2008-01-09 Jonathan Larmour
1014 * opt.h, ip.c: Rename IP_OPTIONS define to IP_OPTIONS_ALLOWED to avoid
1015 conflict with Linux system headers.
1017 2008-01-06 Jonathan Larmour
1018 * dhcp.c: fix bug #19927: "DHCP NACK problem" by clearing any existing set IP
1019 address entirely on receiving a DHCPNAK, and restarting discovery.
1021 2007-12-21 Simon Goldschmidt
1022 * sys.h, api_lib.c, api_msg.c, sockets.c: fix bug #21698: "netconn->recv_avail
1023 is not protected" by using new macros for interlocked access to modify/test
1024 netconn->recv_avail.
1026 2007-12-20 Kieran Mansley (based on patch from Oleg Tyshev)
1027 * tcp_in.c: fix bug# 21535 (nrtx not reset correctly in SYN_SENT state)
1029 2007-12-20 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
1030 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: fix bug #20199 (better handling
1031 of silly window avoidance and prevent lwIP from shrinking the window)
1033 2007-12-04 Simon Goldschmidt
1034 * tcp.c, tcp_in.c: fix bug #21699 (segment leak in ooseq processing when last
1035 data packet was lost): add assert that all segment lists are empty in
1036 tcp_pcb_remove before setting pcb to CLOSED state; don't directly set CLOSED
1037 state from LAST_ACK in tcp_process
1039 2007-12-02 Simon Goldschmidt
1040 * sockets.h: fix bug #21654: exclude definition of struct timeval from #ifndef FD_SET
1041 If including <sys/time.h> for system-struct timeval, LWIP_TIMEVAL_PRIVATE now
1042 has to be set to 0 in lwipopts.h
1044 2007-12-02 Simon Goldschmidt
1045 * api_msg.c, api_lib.c: fix bug #21656 (recvmbox problem in netconn API): always
1046 allocate a recvmbox in netconn_new_with_proto_and_callback. For a tcp-listen
1047 netconn, this recvmbox is later freed and a new mbox is allocated for acceptmbox.
1048 This is a fix for thread-safety and allocates all items needed for a netconn
1049 when the netconn is created.
1051 2007-11-30 Simon Goldschmidt
1052 * udp.c: first attempt to fix bug #21655 (DHCP doesn't work reliably with multiple
1053 netifs): if LWIP_DHCP is enabled, UDP packets to DHCP_CLIENT_PORT are passed
1054 to netif->dhcp->pcb only (if that exists) and not to any other pcb for the same
1055 port (only solution to let UDP pcbs 'bind' to a netif instead of an IP address)
1057 2007-11-27 Simon Goldschmidt
1058 * ip.c: fixed bug #21643 (udp_send/raw_send don't fail if netif is down) by
1059 letting ip_route only use netifs that are up.
1061 2007-11-27 Simon Goldschmidt
1062 * err.h, api_lib.c, api_msg.c, sockets.c: Changed error handling: ERR_MEM, ERR_BUF
1063 and ERR_RTE are seen as non-fatal, all other errors are fatal. netconns and
1064 sockets block most operations once they have seen a fatal error.
1066 2007-11-27 Simon Goldschmidt
1067 * udp.h, udp.c, dhcp.c: Implemented new function udp_sendto_if which takes the
1068 netif to send as an argument (to be able to send on netifs that are down).
1070 2007-11-26 Simon Goldschmidt
1071 * tcp_in.c: Fixed bug #21582: pcb->acked accounting can be wrong when ACKs
1074 2007-11-21 Simon Goldschmidt
1075 * tcp.h, tcp_out.c, api_msg.c: Fixed bug #20287: tcp_output_nagle sends too early
1076 Fixed the nagle algorithm; nagle now also works for all raw API applications
1077 and has to be explicitly disabled with 'tcp_pcb->flags |= TF_NODELAY'
1079 2007-11-12 Frédéric Bernon
1080 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fixed bug #20900. Now, most
1081 of the netconn_peer and netconn_addr processing is done inside tcpip_thread
1082 context in do_getaddr.
1084 2007-11-10 Simon Goldschmidt
1085 * etharp.c: Fixed bug: assert fired when MEMP_ARP_QUEUE was empty (which can
1086 happen any time). Now the packet simply isn't enqueued when out of memory.
1088 2007-11-01 Simon Goldschmidt
1089 * tcp.c, tcp_in.c: Fixed bug #21494: The send mss (pcb->mss) is set to 536 (or
1090 TCP_MSS if that is smaller) as long as no MSS option is received from the
1093 2007-11-01 Simon Goldschmidt
1094 * tcp.h, tcp.c, tcp_in.c: Fixed bug #21491: The MSS option sent (with SYN)
1095 is now based on TCP_MSS instead of pcb->mss (on passive open now effectively
1096 sending our configured TCP_MSS instead of the one received).
1098 2007-11-01 Simon Goldschmidt
1099 * tcp_in.c: Fixed bug #21181: On active open, the initial congestion window was
1100 calculated based on the configured TCP_MSS, not on the MSS option received
1103 2007-10-09 Simon Goldschmidt
1104 * udp.c, inet.c, inet.h: Fixed UDPLite: send: Checksum was always generated too
1105 short and also was generated wrong if checksum coverage != tot_len;
1106 receive: checksum was calculated wrong if checksum coverage != tot_len
1108 2007-10-08 Simon Goldschmidt
1109 * mem.c: lfree was not updated in mem_realloc!
1111 2007-10-07 Frédéric Bernon
1112 * sockets.c, api.h, api_lib.c: First step to fix "bug #20900 : Potential
1113 crash error problem with netconn_peer & netconn_addr". VERY IMPORTANT:
1114 this change cause an API breakage for netconn_addr, since a parameter
1115 type change. Any compiler should cause an error without any changes in
1116 yours netconn_peer calls (so, it can't be a "silent change"). It also
1117 reduce a little bit the footprint for socket layer (lwip_getpeername &
1118 lwip_getsockname use now a common lwip_getaddrname function since
1119 netconn_peer & netconn_addr have the same parameters).
1121 2007-09-20 Simon Goldschmidt
1122 * tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state)
1123 by checking tcp_tw_pcbs also
1125 2007-09-19 Simon Goldschmidt
1126 * icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
1128 2007-09-15 Mike Kleshov
1129 * mem.c: Fixed bug #21077 (inaccuracy in calculation of lwip_stat.mem.used)
1131 2007-09-06 Frédéric Bernon
1132 * several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
1133 it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
1134 already include "lwip/arch.h"). Like that, default defines are provided by "lwip/arch.h"
1135 if they are not defined in cc.h, in the same spirit than "lwip/opt.h" for lwipopts.h.
1137 2007-08-30 Frédéric Bernon
1138 * igmp.h, igmp.c: Some changes to remove some redundant code, add some traces,
1139 and fix some coding style.
1141 2007-08-28 Frédéric Bernon
1142 * tcpip.c: Fix TCPIP_MSG_INPKT processing: now, tcpip_input can be used for any
1143 kind of packets. These packets are considered like Ethernet packets (payload
1144 pointing to ethhdr) if the netif got the NETIF_FLAG_ETHARP flag. Else, packets
1145 are considered like IP packets (payload pointing to iphdr).
1147 2007-08-27 Frédéric Bernon
1148 * api.h, api_lib.c, api_msg.c: First fix for "bug #20900 : Potential crash error
1149 problem with netconn_peer & netconn_addr". Introduce NETCONN_LISTEN netconn_state
1150 and remove obsolete ones (NETCONN_RECV & NETCONN_ACCEPT).
1152 2007-08-24 Kieran Mansley
1153 * inet.c Modify (acc >> 16) test to ((acc >> 16) != 0) to help buggy
1154 compiler (Paradigm C++)
1156 2007-08-09 Frédéric Bernon, Bill Florac
1157 * stats.h, stats.c, igmp.h, igmp.c, opt.h: Fix for bug #20503 : IGMP Improvement.
1158 Introduce IGMP_STATS to centralize statistics management.
1160 2007-08-09 Frédéric Bernon, Bill Florac
1161 * udp.c: Fix for bug #20503 : IGMP Improvement. Enable to receive a multicast
1162 packet on a udp pcb binded on an netif's IP address, and not on "any".
1164 2007-08-09 Frédéric Bernon, Bill Florac
1165 * igmp.h, igmp.c, ip.c: Fix minor changes from bug #20503 : IGMP Improvement.
1166 This is mainly on using lookup/lookfor, and some coding styles...
1168 2007-07-26 Frédéric Bernon (and "thedoctor")
1169 * igmp.c: Fix bug #20595 to accept IGMPv3 "Query" messages.
1171 2007-07-25 Simon Goldschmidt
1172 * api_msg.c, tcp.c: Another fix for bug #20021: by not returning an error if
1173 tcp_output fails in tcp_close, the code in do_close_internal gets simpler
1174 (tcp_output is called again later from tcp timers).
1176 2007-07-25 Simon Goldschmidt
1177 * ip_frag.c: Fixed bug #20429: use the new pbuf_copy_partial instead of the old
1178 copy_from_pbuf, which illegally modified the given pbuf.
1180 2007-07-25 Simon Goldschmidt
1181 * tcp_out.c: tcp_enqueue: pcb->snd_queuelen didn't work for chaine PBUF_RAMs:
1182 changed snd_queuelen++ to snd_queuelen += pbuf_clen(p).
1184 2007-07-24 Simon Goldschmidt
1185 * api_msg.c, tcp.c: Fix bug #20480: Check the pcb passed to tcp_listen() for the
1186 correct state (must be CLOSED).
1188 2007-07-13 Thomas Taranowski (commited by Jared Grubb)
1189 * memp.c: Fix bug #20478: memp_malloc returned NULL+MEMP_SIZE on failed
1190 allocation. It now returns NULL.
1192 2007-07-13 Frédéric Bernon
1193 * api_msg.c: Fix bug #20318: api_msg "recv" callbacks don't call pbuf_free in
1196 2007-07-13 Frédéric Bernon
1197 * api_msg.c: Fix bug #20315: possible memory leak problem if tcp_listen failed,
1198 because current code doesn't follow rawapi.txt documentation.
1200 2007-07-13 Kieran Mansley
1201 * src/core/tcp_in.c Apply patch#5741 from Oleg Tyshev to fix bug in
1202 out of sequence processing of received packets
1204 2007-07-03 Simon Goldschmidt
1205 * nearly-all-files: Added assertions where PBUF_RAM pbufs are used and an
1206 assumption is made that this pbuf is in one piece (i.e. not chained). These
1207 assumptions clash with the possibility of converting to fully pool-based
1208 pbuf implementations, where PBUF_RAM pbufs might be chained.
1210 2007-07-03 Simon Goldschmidt
1211 * api.h, api_lib.c, api_msg.c: Final fix for bug #20021 and some other problems
1212 when closing tcp netconns: removed conn->sem, less context switches when
1213 closing, both netconn_close and netconn_delete should safely close tcp
1216 2007-07-02 Simon Goldschmidt
1217 * ipv4/ip.h, ipv6/ip.h, opt.h, netif.h, etharp.h, ipv4/ip.c, netif.c, raw.c,
1218 tcp_out.c, udp.c, etharp.c: Added option LWIP_NETIF_HWADDRHINT (default=off)
1219 to cache ARP table indices with each pcb instead of single-entry cache for
1222 2007-07-02 Simon Goldschmidt
1223 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Added some ASSERTS and casts to prevent
1224 warnings when assigning to smaller types.
1226 2007-06-28 Simon Goldschmidt
1227 * tcp_out.c: Added check to prevent tcp_pcb->snd_queuelen from overflowing.
1229 2007-06-28 Simon Goldschmidt
1230 * tcp.h: Fixed bug #20287: Fixed nagle algorithm (sending was done too early if
1231 a segment contained chained pbufs)
1233 2007-06-28 Frédéric Bernon
1234 * autoip.c: replace most of rand() calls by a macro LWIP_AUTOIP_RAND which compute
1235 a "pseudo-random" value based on netif's MAC and some autoip fields. It's always
1236 possible to define this macro in your own lwipopts.h to always use C library's
1237 rand(). Note that autoip_create_rand_addr doesn't use this macro.
1239 2007-06-28 Frédéric Bernon
1240 * netifapi.h, netifapi.c, tcpip.h, tcpip.c: Update code to handle the option
1241 LWIP_TCPIP_CORE_LOCKING, and do some changes to be coherent with last modifications
1242 in api_lib/api_msg (use pointers and not type with table, etc...)
1244 2007-06-26 Simon Goldschmidt
1245 * udp.h: Fixed bug #20259: struct udp_hdr was lacking the packin defines.
1247 2007-06-25 Simon Goldschmidt
1248 * udp.c: Fixed bug #20253: icmp_dest_unreach was called with a wrong p->payload
1249 for udp packets with no matching pcb.
1251 2007-06-25 Simon Goldschmidt
1252 * udp.c: Fixed bug #20220: UDP PCB search in udp_input(): a non-local match
1253 could get udp input packets if the remote side matched.
1255 2007-06-13 Simon Goldschmidt
1256 * netif.c: Fixed bug #20180 (TCP pcbs listening on IP_ADDR_ANY could get
1257 changed in netif_set_ipaddr if previous netif->ip_addr.addr was 0.
1259 2007-06-13 Simon Goldschmidt
1260 * api_msg.c: pcb_new sets conn->err if protocol is not implemented
1261 -> netconn_new_..() does not allocate a new connection for unsupported
1264 2007-06-13 Frédéric Bernon, Simon Goldschmidt
1265 * api_lib.c: change return expression in netconn_addr and netconn_peer, because
1266 conn->err was reset to ERR_OK without any reasons (and error was lost)...
1268 2007-06-13 Frédéric Bernon, Matthias Weisser
1269 * opt.h, mem.h, mem.c, memp.c, pbuf.c, ip_frag.c, vj.c: Fix bug #20162. Rename
1270 MEM_ALIGN in LWIP_MEM_ALIGN and MEM_ALIGN_SIZE in LWIP_MEM_ALIGN_SIZE to avoid
1271 some macro names collision with some OS macros.
1273 2007-06-11 Simon Goldschmidt
1274 * udp.c: UDP Lite: corrected the use of chksum_len (based on RFC3828: if it's 0,
1275 create checksum over the complete packet. On RX, if it's < 8 (and not 0),
1276 discard the packet. Also removed the duplicate 'udphdr->chksum = 0' for both
1279 2007-06-11 Srinivas Gollakota & Oleg Tyshev
1280 * tcp_out.c: Fix for bug #20075 : "A problem with keep-alive timer and TCP flags"
1281 where TCP flags wasn't initialized in tcp_keepalive.
1283 2007-06-03 Simon Goldschmidt
1284 * udp.c: udp_input(): Input pbuf was not freed if pcb had no recv function
1285 registered, p->payload was modified without modifying p->len if sending
1286 icmp_dest_unreach() (had no negative effect but was definitively wrong).
1288 2007-06-03 Simon Goldschmidt
1289 * icmp.c: Corrected bug #19937: For responding to an icmp echo request, icmp
1290 re-used the input pbuf even if that didn't have enough space to include the
1291 link headers. Now the space is tested and a new pbuf is allocated for the
1292 echo response packet if the echo request pbuf isn't big enough.
1294 2007-06-01 Simon Goldschmidt
1295 * sockets.c: Checked in patch #5914: Moved sockopt processing into tcpip_thread.
1297 2007-05-23 Frédéric Bernon
1298 * api_lib.c, sockets.c: Fixed bug #5958 for netconn_listen (acceptmbox only
1299 allocated by do_listen if success) and netconn_accept errors handling. In
1300 most of api_lib functions, we replace some errors checkings like "if (conn==NULL)"
1301 by ASSERT, except for netconn_delete.
1303 2007-05-23 Frédéric Bernon
1304 * api_lib.c: Fixed bug #5957 "Safe-thread problem inside netconn_recv" to return
1305 an error code if it's impossible to fetch a pbuf on a TCP connection (and not
1306 directly close the recvmbox).
1308 2007-05-22 Simon Goldschmidt
1309 * tcp.c: Fixed bug #1895 (tcp_bind not correct) by introducing a list of
1310 bound but unconnected (and non-listening) tcp_pcbs.
1312 2007-05-22 Frédéric Bernon
1313 * sys.h, sys.c, api_lib.c, tcpip.c: remove sys_mbox_fetch_timeout() (was only
1314 used for LWIP_SO_RCVTIMEO option) and use sys_arch_mbox_fetch() instead of
1315 sys_mbox_fetch() in api files. Now, users SHOULD NOT use internal lwIP features
1316 like "sys_timeout" in their application threads.
1318 2007-05-22 Frédéric Bernon
1319 * api.h, api_lib.c, api_msg.h, api_msg.c: change the struct api_msg_msg to see
1320 which parameters are used by which do_xxx function, and to avoid "misusing"
1321 parameters (patch #5938).
1323 2007-05-22 Simon Goldschmidt
1324 * api_lib.c, api_msg.c, raw.c, api.h, api_msg.h, raw.h: Included patch #5938:
1325 changed raw_pcb.protocol from u16_t to u8_t since for IPv4 and IPv6, proto
1326 is only 8 bits wide. This affects the api, as there, the protocol was
1329 2007-05-18 Simon Goldschmidt
1330 * memp.c: addition to patch #5913: smaller pointer was returned but
1331 memp_memory was the same size -> did not save memory.
1333 2007-05-16 Simon Goldschmidt
1334 * loopif.c, slipif.c: Fix bug #19729: free pbuf if netif->input() returns
1337 2007-05-16 Simon Goldschmidt
1338 * api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same
1339 as the one of the netif used for sending to prevent sending from old
1340 addresses after a netif address gets changed (partly fixes bug #3168).
1342 2007-05-16 Frédéric Bernon
1343 * tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work
1344 with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in
1345 tcpip_init) because we have to be sure that network interfaces are already
1346 added (mac filter is updated only in igmp_init for the moment).
1348 2007-05-16 Simon Goldschmidt
1349 * mem.c, memp.c: Removed semaphores from memp, changed sys_sem_wait calls
1350 into sys_arch_sem_wait calls to prevent timers from running while waiting
1351 for the heap. This fixes bug #19167.
1353 2007-05-13 Simon Goldschmidt
1354 * tcp.h, sockets.h, sockets.c: Fixed bug from patch #5865 by moving the defines
1355 for socket options (lwip_set/-getsockopt) used with level IPPROTO_TCP from
1358 2007-05-07 Simon Goldschmidt
1359 * mem.c: Another attempt to fix bug #17922.
1361 2007-05-04 Simon Goldschmidt
1362 * pbuf.c, pbuf.h, etharp.c: Further update to ARP queueing: Changed pbuf_copy()
1363 implementation so that it can be reused (don't allocate the target
1364 pbuf inside pbuf_copy()).
1366 2007-05-04 Simon Goldschmidt
1367 * memp.c: checked in patch #5913: in memp_malloc() we can return memp as mem
1368 to save a little RAM (next pointer of memp is not used while not in pool).
1371 * sockets.c: Fix ioctl FIONREAD when some data remains from last recv.
1374 2007-04-23 Simon Goldschmidt
1375 * loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results
1376 in NULL reference for incoming TCP packets". Loopif has to be configured
1377 (using LWIP_LOOPIF_MULTITHREADING) to directly call netif->input()
1378 (multithreading environments, e.g. netif->input() = tcpip_input()) or
1379 putting packets on a list that is fed to the stack by calling loopif_poll()
1380 (single-thread / NO_SYS / polling environment where e.g.
1381 netif->input() = ip_input).
1383 2007-04-17 Jonathan Larmour
1384 * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold
1385 the difference between two u16_t's.
1386 * sockets.h: FD_SETSIZE needs to match number of sockets, which is
1387 MEMP_NUM_NETCONN in sockets.c right now.
1389 2007-04-12 Jonathan Larmour
1390 * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580).
1392 2007-04-12 Kieran Mansley
1393 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Modify way the retransmission
1394 timer is reset to fix bug#19434, with help from Oleg Tyshev.
1396 2007-04-11 Simon Goldschmidt
1397 * etharp.c, pbuf.c, pbuf.h: 3rd fix for bug #11400 (arp-queuing): More pbufs than
1398 previously thought need to be copied (everything but PBUF_ROM!). Cleaned up
1399 pbuf.c: removed functions no needed any more (by etharp).
1401 2007-04-11 Kieran Mansley
1402 * inet.c, ip_addr.h, sockets.h, sys.h, tcp.h: Apply patch #5745: Fix
1403 "Constant is long" warnings with 16bit compilers. Contributed by
1404 avatar@mmlab.cse.yzu.edu.tw
1406 2007-04-05 Frédéric Bernon, Jonathan Larmour
1407 * api_msg.c: Fix bug #16830: "err_tcp() posts to connection mailbox when no pend on
1408 the mailbox is active". Now, the post is only done during a connect, and do_send,
1409 do_write and do_join_leave_group don't do anything if a previous error was signaled.
1411 2007-04-03 Frédéric Bernon
1412 * ip.c: Don't set the IP_DF ("Don't fragment") flag in the IP header in IP output
1413 packets. See patch #5834.
1415 2007-03-30 Frédéric Bernon
1416 * api_msg.c: add a "pcb_new" helper function to avoid redundant code, and to add
1417 missing pcb allocations checking (in do_bind, and for each raw_new). Fix style.
1419 2007-03-30 Frédéric Bernon
1420 * most of files: prefix all debug.h define with "LWIP_" to avoid any conflict with
1421 others environment defines (these were too "generic").
1423 2007-03-28 Frédéric Bernon
1424 * api.h, api_lib.c, sockets.c: netbuf_ref doesn't check its internal pbuf_alloc call
1425 result and can cause a crash. lwip_send now check netbuf_ref result.
1427 2007-03-28 Simon Goldschmidt
1428 * sockets.c Remove "#include <errno.h>" from sockets.c to avoid multiple
1429 definition of macros (in errno.h and lwip/arch.h) if LWIP_PROVIDE_ERRNO is
1430 defined. This is the way it should have been already (looking at
1433 2007-03-28 Kieran Mansley
1434 * opt.h Change default PBUF_POOL_BUFSIZE (again) to accomodate default MSS +
1435 IP and TCP headers *and* physical link headers
1437 2007-03-26 Frédéric Bernon (based on patch from Dmitry Potapov)
1438 * api_lib.c: patch for netconn_write(), fixes a possible race condition which cause
1439 to send some garbage. It is not a definitive solution, but the patch does solve
1440 the problem for most cases.
1442 2007-03-22 Frédéric Bernon
1443 * api_msg.h, api_msg.c: Remove obsolete API_MSG_ACCEPT and do_accept (never used).
1445 2007-03-22 Frédéric Bernon
1446 * api_lib.c: somes resources couldn't be freed if there was errors during
1447 netconn_new_with_proto_and_callback.
1449 2007-03-22 Frédéric Bernon
1450 * ethernetif.c: update netif->input calls to check return value. In older ports,
1451 it's a good idea to upgrade them, even if before, there could be another problem
1452 (access to an uninitialized mailbox).
1454 2007-03-21 Simon Goldschmidt
1455 * sockets.c: fixed bug #5067 (essentialy a signed/unsigned warning fixed
1456 by casting to unsigned).
1458 2007-03-21 Frédéric Bernon
1459 * api_lib.c, api_msg.c, tcpip.c: integrate sys_mbox_fetch(conn->mbox, NULL) calls from
1460 api_lib.c to tcpip.c's tcpip_apimsg(). Now, use a local variable and not a
1461 dynamic one from memp to send tcpip_msg to tcpip_thread in a synchrone call.
1462 Free tcpip_msg from tcpip_apimsg is not done in tcpip_thread. This give a
1463 faster and more reliable communication between api_lib and tcpip.
1465 2007-03-21 Frédéric Bernon
1466 * opt.h: Add LWIP_NETIF_CALLBACK (to avoid compiler warning) and set it to 0.
1468 2007-03-21 Frédéric Bernon
1469 * api_msg.c, igmp.c, igmp.h: Fix C++ style comments
1471 2007-03-21 Kieran Mansley
1472 * opt.h Change default PBUF_POOL_BUFSIZE to accomodate default MSS +
1475 2007-03-21 Kieran Mansley
1476 * Fix all uses of pbuf_header to check the return value. In some
1477 cases just assert if it fails as I'm not sure how to fix them, but
1478 this is no worse than before when they would carry on regardless
1481 2007-03-21 Kieran Mansley
1482 * sockets.c, igmp.c, igmp.h, memp.h: Fix C++ style comments and
1483 comment out missing header include in icmp.c
1485 2007-03-20 Frédéric Bernon
1486 * memp.h, stats.c: Fix stats_display function where memp_names table wasn't
1487 synchronized with memp.h.
1489 2007-03-20 Frédéric Bernon
1490 * tcpip.c: Initialize tcpip's mbox, and verify if initialized in tcpip_input,
1491 tcpip_ethinput, tcpip_callback, tcpip_apimsg, to fix a init problem with
1492 network interfaces. Also fix a compiler warning.
1494 2007-03-20 Kieran Mansley
1495 * udp.c: Only try and use pbuf_header() to make space for headers if
1496 not a ROM or REF pbuf.
1498 2007-03-19 Frédéric Bernon
1499 * api_msg.h, api_msg.c, tcpip.h, tcpip.c: Add return types to tcpip_apimsg()
1502 2007-03-19 Frédéric Bernon
1503 * Remove unimplemented "memp_realloc" function from memp.h.
1505 2007-03-11 Simon Goldschmidt
1506 * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused
1509 2007-03-11 Simon Goldschmidt (based on patch from Dmitry Potapov)
1510 * api_lib.c, sockets.c, api.h, api_msg.h, sockets.h: Fixed bug #19251
1511 (missing `const' qualifier in socket functions), to get more compatible to
1512 standard POSIX sockets.
1514 2007-03-11 Frédéric Bernon (based on patch from Dmitry Potapov)
1515 * sockets.c: Add asserts inside bind, connect and sendto to check input
1516 parameters. Remove excessive set_errno() calls after get_socket(), because
1517 errno is set inside of get_socket(). Move last sock_set_errno() inside
1520 2007-03-09 Simon Goldschmidt
1521 * memp.c: Fixed bug #11400: New etharp queueing introduced bug: memp_memory
1522 was allocated too small.
1524 2007-03-06 Simon Goldschmidt
1525 * tcpip.c: Initialize dhcp timers in tcpip_thread (if LWIP_DHCP) to protect
1526 the stack from concurrent access.
1528 2007-03-06 Frédéric Bernon, Dmitry Potapov
1529 * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy
1530 call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().
1532 2007-03-06 Simon Goldschmidt
1533 * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files
1534 if IP_FRAG == 0 and IP_REASSEMBLY == 0
1536 2007-03-06 Frédéric Bernon, Simon Goldschmidt
1537 * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration
1538 option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput.
1539 Allow to do ARP processing for incoming packets inside tcpip_thread
1540 (protecting ARP layer against concurrent access). You can also disable
1541 old code using tcp_input with new define ETHARP_TCPIP_INPUT set to 0.
1542 Older ports have to use tcpip_ethinput.
1544 2007-03-06 Simon Goldschmidt (based on patch from Dmitry Potapov)
1545 * err.h, err.c: fixed compiler warning "initialization dircards qualifiers
1546 from pointer target type"
1548 2007-03-05 Frédéric Bernon
1549 * opt.h, sockets.h: add new configuration options (LWIP_POSIX_SOCKETS_IO_NAMES,
1550 ETHARP_TRUST_IP_MAC, review SO_REUSE)
1552 2007-03-04 Frédéric Bernon
1553 * api_msg.c: Remove some compiler warnings : parameter "pcb" was never
1556 2007-03-04 Frédéric Bernon
1557 * api_lib.c: Fix "[patch #5764] api_lib.c cleanup: after patch #5687" (from
1559 The api_msg struct stay on the stack (not moved to netconn struct).
1561 2007-03-04 Simon Goldschmidt (based on patch from Dmitry Potapov)
1562 * pbuf.c: Fix BUG#19168 - pbuf_free can cause deadlock (if
1563 SYS_LIGHTWEIGHT_PROT=1 & freeing PBUF_RAM when mem_sem is not available)
1564 Also fixed cast warning in pbuf_alloc()
1566 2007-03-04 Simon Goldschmidt
1567 * etharp.c, etharp.h, memp.c, memp.h, opt.h: Fix BUG#11400 - don't corrupt
1568 existing pbuf chain when enqueuing multiple pbufs to a pending ARP request
1570 2007-03-03 Frédéric Bernon
1571 * udp.c: remove obsolete line "static struct udp_pcb *pcb_cache = NULL;"
1572 It is static, and never used in udp.c except udp_init().
1574 2007-03-02 Simon Goldschmidt
1575 * tcpip.c: Moved call to ip_init(), udp_init() and tcp_init() from
1576 tcpip_thread() to tcpip_init(). This way, raw API connections can be
1577 initialized before tcpip_thread is running (e.g. before OS is started)
1579 2007-03-02 Frédéric Bernon
1580 * rawapi.txt: Fix documentation mismatch with etharp.h about etharp_tmr's call
1583 2007-02-28 Kieran Mansley
1584 * pbuf.c: Fix BUG#17645 - ensure pbuf payload pointer is not moved
1585 outside the region of the pbuf by pbuf_header()
1587 2007-02-28 Kieran Mansley
1588 * sockets.c: Fix BUG#19161 - ensure milliseconds timeout is non-zero
1589 when supplied timeout is also non-zero
1593 2006-12-05 Leon Woestenberg
1594 * CHANGELOG: Mention STABLE-1.2.0 release.
1598 2006-12-01 Christiaan Simons
1599 * mem.h, opt.h: Added MEM_LIBC_MALLOC option.
1600 Note this is a workaround. Currently I have no other options left.
1602 2006-10-26 Christiaan Simons (accepted patch by Jonathan Larmour)
1603 * ipv4/ip_frag.c: rename MAX_MTU to IP_FRAG_MAX_MTU and move define
1604 to include/lwip/opt.h.
1605 * ipv4/lwip/ip_frag.h: Remove unused IP_REASS_INTERVAL.
1606 Move IP_REASS_MAXAGE and IP_REASS_BUFSIZE to include/lwip/opt.h.
1607 * opt.h: Add above new options.
1609 2006-08-18 Christiaan Simons
1610 * tcp_{in,out}.c: added SNMP counters.
1611 * ipv4/ip.c: added SNMP counters.
1612 * ipv4/ip_frag.c: added SNMP counters.
1614 2006-08-08 Christiaan Simons
1615 * etharp.{c,h}: added etharp_find_addr() to read
1616 (stable) ethernet/IP address pair from ARP table
1618 2006-07-14 Christiaan Simons
1619 * mib_structs.c: added
1620 * include/lwip/snmp_structs.h: added
1621 * netif.{c,h}, netif/ethernetif.c: added SNMP statistics to netif struct
1623 2006-07-06 Christiaan Simons
1624 * snmp/asn1_{enc,dec}.c added
1626 * snmp/msg_{in,out}.c added
1627 * include/lwip/snmp_asn1.h added
1628 * include/lwip/snmp_msg.h added
1629 * doc/snmp_agent.txt added
1631 2006-03-29 Christiaan Simons
1632 * inet.c, inet.h: Added platform byteswap support.
1633 Added LWIP_PLATFORM_BYTESWAP define (defaults to 0) and
1634 optional LWIP_PLATFORM_HTONS(), LWIP_PLATFORM_HTONL() macros.
1638 2006-11-30 Christiaan Simons
1639 * dhcp.c: Fixed false triggers of request_timeout.
1641 2006-11-28 Christiaan Simons
1642 * netif.c: In netif_add() fixed missing clear of ip_addr, netmask, gw and flags.
1644 2006-10-11 Christiaan Simons
1645 * api_lib.c etharp.c, ip.c, memp.c, stats.c, sys.{c,h} tcp.h:
1646 Partially accepted patch #5449 for ANSI C compatibility / build fixes.
1647 * ipv4/lwip/ip.h ipv6/lwip/ip.h: Corrected UDP-Lite protocol
1648 identifier from 170 to 136 (bug #17574).
1650 2006-10-10 Christiaan Simons
1651 * api_msg.c: Fixed Nagle algorithm as reported by Bob Grice.
1653 2006-08-17 Christiaan Simons
1654 * udp.c: Fixed bug #17200, added check for broadcast
1655 destinations for PCBs bound to a unicast address.
1657 2006-08-07 Christiaan Simons
1658 * api_msg.c: Flushing TCP output in do_close() (bug #15926).
1660 2006-06-27 Christiaan Simons
1661 * api_msg.c: Applied patch for cold case (bug #11135).
1662 In accept_function() ensure newconn->callback is always initialized.
1664 2006-06-15 Christiaan Simons
1665 * mem.h: added MEM_SIZE_F alias to fix an ancient cold case (bug #1748),
1666 facilitate printing of mem_size_t and u16_t statistics.
1668 2006-06-14 Christiaan Simons
1669 * api_msg.c: Applied patch #5146 to handle allocation failures
1670 in accept() by Kevin Lawson.
1672 2006-05-26 Christiaan Simons
1673 * api_lib.c: Removed conn->sem creation and destruction
1674 from netconn_write() and added sys_sem_new to netconn_new_*.
1678 2006-03-03 Christiaan Simons
1679 * ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap
1680 access and added pbuf_alloc() return value checks.
1682 2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net>
1683 * tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is
1684 now handled by the checksum routine properly.
1686 2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1687 * pbuf.c: Fix alignment; pbuf_init() would not work unless
1688 pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.)
1690 2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net>
1691 * tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch
1692 submitted by Mitrani Hiroshi.
1694 2005-12-15 Christiaan Simons
1695 * inet.c: Disabled the added summing routine to preserve code space.
1697 2005-12-14 Leon Woestenberg <leon.woestenberg@gmx.net>
1698 * tcp_in.c: Duplicate FIN ACK race condition fix by Kelvin Lawson.
1699 Added Curt McDowell's optimized checksumming routine for future
1700 inclusion. Need to create test case for unaliged, aligned, odd,
1701 even length combination of cases on various endianess machines.
1703 2005-12-09 Christiaan Simons
1704 * inet.c: Rewrote standard checksum routine in proper portable C.
1706 2005-11-25 Christiaan Simons
1707 * udp.c tcp.c: Removed SO_REUSE hack. Should reside in socket code only.
1708 * *.c: introduced cc.h LWIP_DEBUG formatters matching the u16_t, s16_t,
1709 u32_t, s32_t typedefs. This solves most debug word-length assumes.
1711 2005-07-17 Leon Woestenberg <leon.woestenberg@gmx.net>
1712 * inet.c: Fixed unaligned 16-bit access in the standard checksum
1713 routine by Peter Jolasson.
1714 * slipif.c: Fixed implementation assumption of single-pbuf datagrams.
1716 2005-02-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1717 * tcp_out.c: Fixed uninitialized 'queue' referenced in memerr branch.
1718 * tcp_{out|in}.c: Applied patch fixing unaligned access.
1720 2005-01-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1721 * pbuf.c: Fixed missing semicolon after LWIP_DEBUG statement.
1723 2005-01-03 Leon Woestenberg <leon.woestenberg@gmx.net>
1724 * udp.c: UDP pcb->recv() was called even when it was NULL.
1728 2004-12-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1729 * etharp.*: Disabled multiple packets on the ARP queue.
1730 This clashes with TCP queueing.
1732 2004-11-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1733 * etharp.*: Fixed race condition from ARP request to ARP timeout.
1734 Halved the ARP period, doubled the period counts.
1735 ETHARP_MAX_PENDING now should be at least 2. This prevents
1736 the counter from reaching 0 right away (which would allow
1737 too little time for ARP responses to be received).
1739 2004-11-25 Leon Woestenberg <leon.woestenberg@gmx.net>
1740 * dhcp.c: Decline messages were not multicast but unicast.
1741 * etharp.c: ETHARP_CREATE is renamed to ETHARP_TRY_HARD.
1742 Do not try hard to insert arbitrary packet's source address,
1743 etharp_ip_input() now calls etharp_update() without ETHARP_TRY_HARD.
1744 etharp_query() now always DOES call ETHARP_TRY_HARD so that users
1745 querying an address will see it appear in the cache (DHCP could
1746 suffer from this when a server invalidly gave an in-use address.)
1747 * ipv4/ip_addr.h: Renamed ip_addr_maskcmp() to _netcmp() as we are
1748 comparing network addresses (identifiers), not the network masks
1750 * ipv4/ip_addr.c: ip_addr_isbroadcast() now checks that the given
1751 IP address actually belongs to the network of the given interface.
1753 2004-11-24 Kieran Mansley <kjm25@cam.ac.uk>
1754 * tcp.c: Increment pcb->snd_buf when ACK is received in SYN_SENT state.
1758 2004-10-16 Kieran Mansley <kjm25@cam.ac.uk>
1759 * tcp.c: Add code to tcp_recved() to send an ACK (window update) immediately,
1760 even if one is already pending, if the rcv_wnd is above a threshold
1761 (currently TCP_WND/2). This avoids waiting for a timer to expire to send a
1762 delayed ACK in order to open the window if the stack is only receiving data.
1764 2004-09-12 Kieran Mansley <kjm25@cam.ac.uk>
1765 * tcp*.*: Retransmit time-out handling improvement by Sam Jansen.
1767 2004-08-20 Tony Mountifield <tony@softins.co.uk>
1768 * etharp.c: Make sure the first pbuf queued on an ARP entry
1769 is properly ref counted.
1771 2004-07-27 Tony Mountifield <tony@softins.co.uk>
1772 * debug.h: Added (int) cast in LWIP_DEBUGF() to avoid compiler
1773 warnings about comparison.
1774 * pbuf.c: Stopped compiler complaining of empty if statement
1775 when LWIP_DEBUGF() empty. Closed an unclosed comment.
1776 * tcp.c: Stopped compiler complaining of empty if statement
1777 when LWIP_DEBUGF() empty.
1778 * ip.h Corrected IPH_TOS() macro: returns a byte, so doesn't need htons().
1779 * inet.c: Added a couple of casts to quiet the compiler.
1780 No need to test isascii(c) before isdigit(c) or isxdigit(c).
1782 2004-07-22 Tony Mountifield <tony@softins.co.uk>
1783 * inet.c: Made data types consistent in inet_ntoa().
1784 Added casts for return values of checksum routines, to pacify compiler.
1785 * ip_frag.c, tcp_out.c, sockets.c, pbuf.c
1786 Small corrections to some debugging statements, to pacify compiler.
1788 2004-07-21 Tony Mountifield <tony@softins.co.uk>
1789 * etharp.c: Removed spurious semicolon and added missing end-of-comment.
1790 * ethernetif.c Updated low_level_output() to match prototype for
1791 netif->linkoutput and changed low_level_input() similarly for consistency.
1792 * api_msg.c: Changed recv_raw() from int to u8_t, to match prototype
1793 of raw_recv() in raw.h and so avoid compiler error.
1794 * sockets.c: Added trivial (int) cast to keep compiler happier.
1795 * ip.c, netif.c Changed debug statements to use the tidier ip4_addrN() macros.
1801 2004-07-05 Leon Woestenberg <leon.woestenberg@gmx.net>
1802 * sockets.*: Restructured LWIP_PRIVATE_TIMEVAL. Make sure
1803 your cc.h file defines this either 1 or 0. If non-defined,
1805 * .c: Added <string.h> and <errno.h> includes where used.
1806 * etharp.c: Made some array indices unsigned.
1808 2004-06-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1809 * netif.*: Added netif_set_up()/down().
1810 * dhcp.c: Changes to restart program flow.
1812 2004-05-07 Leon Woestenberg <leon.woestenberg@gmx.net>
1813 * etharp.c: In find_entry(), instead of a list traversal per candidate, do a
1814 single-pass lookup for different candidates. Should exploit locality.
1816 2004-04-29 Leon Woestenberg <leon.woestenberg@gmx.net>
1817 * tcp*.c: Cleaned up source comment documentation for Doxygen processing.
1818 * opt.h: ETHARP_ALWAYS_INSERT option removed to comply with ARP RFC.
1819 * etharp.c: update_arp_entry() only adds new ARP entries when adviced to by
1820 the caller. This deprecates the ETHARP_ALWAYS_INSERT overrule option.
1824 2004-04-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1825 * etharp.c: Applied patch of bug #8708 by Toni Mountifield with a solution
1826 suggested by Timmy Brolin. Fix for 32-bit processors that cannot access
1827 non-aligned 32-bit words, such as soms 32-bit TCP/IP header fields. Fix
1828 is to prefix the 14-bit Ethernet headers with two padding bytes.
1830 2004-04-23 Leon Woestenberg <leon.woestenberg@gmx.net>
1831 * ip_addr.c: Fix in the ip_addr_isbroadcast() check.
1832 * etharp.c: Fixed the case where the packet that initiates the ARP request
1833 is not queued, and gets lost. Fixed the case where the packets destination
1834 address is already known; we now always queue the packet and perform an ARP
1841 * Fixed TCP bug for SYN_SENT to ESTABLISHED state transition.
1842 * Fixed TCP bug in dequeueing of FIN from out of order segment queue.
1843 * Fixed two possible NULL references in rare cases.
1849 * Fixed DHCP which did not include the IP address in DECLINE messages.
1853 * etharp.c has been hauled over a bit.
1859 * Fixed TCP bug induced by bad window resizing with unidirectional TCP traffic.
1860 * Packets sent from ARP queue had invalid source hardware address.
1864 * Pass-by ARP requests do now update the cache.
1868 * No longer dependent on ctype.h.
1869 * New socket options.
1870 * Raw IP pcb support.
1876 * Some debug formatters and casts fixed.
1877 * Numereous fixes in PPP.
1881 * DEBUGF now is LWIP_DEBUGF
1882 * pbuf_dechain() has been re-enabled.
1883 * Mentioned the changed use of CVS branches in README.
1889 * Fixed pool pbuf memory leak in pbuf_alloc().
1890 Occured if not enough PBUF_POOL pbufs for a packet pbuf chain.
1891 Reported by Savin Zlobec.
1893 * PBUF_POOL chains had their tot_len field not set for non-first
1894 pbufs. Fixed in pbuf_alloc().
1898 * Added PPP stack contributed by Marc Boucher
1902 * Now drops short packets for ICMP/UDP/TCP protocols. More robust.
1904 * ARP queueuing now queues the latest packet instead of the first.
1905 This is the RFC recommended behaviour, but can be overridden in
1912 * TCP has been fixed to deal with the new use of the pbuf->ref
1915 * DHCP dhcp_inform() crash bug fixed.
1919 * Removed pbuf_pool_free_cache and pbuf_pool_alloc_cache. Also removed
1920 pbuf_refresh(). This has sped up pbuf pool operations considerably.
1921 Implemented by David Haas.
1927 * The packet buffer implementation has been enhanced to support
1928 zero-copy and copy-on-demand for packet buffers which have their
1929 payloads in application-managed memory.
1930 Implemented by David Haas.
1932 Use PBUF_REF to make a pbuf refer to RAM. lwIP will use zero-copy
1933 if an outgoing packet can be directly sent on the link, or perform
1934 a copy-on-demand when necessary.
1936 The application can safely assume the packet is sent, and the RAM
1937 is available to the application directly after calling udp_send()
1938 or similar function.
1942 * ARP_QUEUEING should now correctly work for all cases, including
1944 Implemented by Leon Woestenberg.
1948 * IP_ADDR_ANY is no longer a NULL pointer. Instead, it is a pointer
1949 to a '0.0.0.0' IP address.
1951 * The packet buffer implementation is changed. The pbuf->ref counter
1952 meaning has changed, and several pbuf functions have been
1953 adapted accordingly.
1955 * netif drivers have to be changed to set the hardware address length field
1956 that must be initialized correctly by the driver (hint: 6 for Ethernet MAC).
1957 See the contrib/ports/c16x cs8900 driver as a driver example.
1959 * netif's have a dhcp field that must be initialized to NULL by the driver.
1960 See the contrib/ports/c16x cs8900 driver as a driver example.
1962 (0.5.x) This file has been unmaintained up to 0.6.1. All changes are
1963 logged in CVS but have not been explained here.
1965 (0.5.3) Changes since version 0.5.2
1969 * memp_malloc(MEMP_API_MSG) could fail with multiple application
1970 threads because it wasn't protected by semaphores.
1974 * struct ip_addr now packed.
1976 * The name of the time variable in arp.c has been changed to ctime
1977 to avoid conflicts with the time() function.
1979 (0.5.2) Changes since version 0.5.1
1983 * A new TCP function, tcp_tmr(), now handles both TCP timers.
1987 * A bug in tcp_parseopt() could cause the stack to hang because of a
1988 malformed TCP option.
1990 * The address of new connections in the accept() function in the BSD
1991 socket library was not handled correctly.
1993 * pbuf_dechain() did not update the ->tot_len field of the tail.
1995 * Aborted TCP connections were not handled correctly in all
2000 * All protocol header structs are now packed.
2002 * The ->len field in the tcp_seg structure now counts the actual
2003 amount of data, and does not add one for SYN and FIN segments.
2005 (0.5.1) Changes since version 0.5.0
2009 * Possible to run as a user process under Linux.
2011 * Preliminary support for cross platform packed structs.
2013 * ARP timer now implemented.
2017 * TCP output queue length was badly initialized when opening
2020 * TCP delayed ACKs were not sent correctly.
2022 * Explicit initialization of BSS segment variables.
2024 * read() in BSD socket library could drop data.
2026 * Problems with memory alignment.
2028 * Situations when all TCP buffers were used could lead to
2031 * TCP MSS option wasn't parsed correctly.
2033 * Problems with UDP checksum calculation.
2035 * IP multicast address tests had endianess problems.
2037 * ARP requests had wrong destination hardware address.
2041 * struct eth_addr changed from u16_t[3] array to u8_t[6].
2043 * A ->linkoutput() member was added to struct netif.
2045 * TCP and UDP ->dest_* struct members where changed to ->remote_*.
2047 * ntoh* macros are now null definitions for big endian CPUs.
2049 (0.5.0) Changes since version 0.4.2
2053 * Redesigned operating system emulation layer to make porting easier.
2055 * Better control over TCP output buffers.
2057 * Documenation added.
2061 * Locking issues in buffer management.
2063 * Bugfixes in the sequential API.
2065 * IP forwarding could cause memory leakage. This has been fixed.
2069 * Directory structure somewhat changed; the core/ tree has been
2072 (0.4.2) Changes since version 0.4.1
2076 * Experimental ARP implementation added.
2078 * Skeleton Ethernet driver added.
2080 * Experimental BSD socket API library added.
2084 * In very intense situations, memory leakage could occur. This has
2089 * Variables named "data" and "code" have been renamed in order to
2090 avoid name conflicts in certain compilers.
2092 * Variable++ have in appliciable cases been translated to ++variable
2093 since some compilers generate better code in the latter case.
2095 (0.4.1) Changes since version 0.4
2099 * TCP: Connection attempts time out earlier than data
2100 transmissions. Nagle algorithm implemented. Push flag set on the
2101 last segment in a burst.
2103 * UDP: experimental support for UDP-Lite extensions.
2107 * TCP: out of order segments were in some cases handled incorrectly,
2108 and this has now been fixed. Delayed acknowledgements was broken
2109 in 0.4, has now been fixed. Binding to an address that is in use
2110 now results in an error. Reset connections sometimes hung an
2111 application; this has been fixed.
2113 * Checksum calculation sometimes failed for chained pbufs with odd
2114 lengths. This has been fixed.
2116 * API: a lot of bug fixes in the API. The UDP API has been improved
2117 and tested. Error reporting and handling has been
2118 improved. Logical flaws and race conditions for incoming TCP
2119 connections has been found and removed.
2121 * Memory manager: alignment issues. Reallocating memory sometimes
2122 failed, this has been fixed.
2124 * Generic library: bcopy was flawed and has been fixed.
2128 * API: all datatypes has been changed from generic ones such as
2129 ints, to specified ones such as u16_t. Functions that return
2130 errors now have the correct type (err_t).
2132 * General: A lot of code cleaned up and debugging code removed. Many
2133 portability issues have been fixed.
2135 * The license was changed; the advertising clause was removed.
2139 * Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri
2140 Kosunen, Mikael Caleres, and Frits Wilmink for reporting and
2143 (0.4) Changes since version 0.3.1
2145 * Memory management has been radically changed; instead of
2146 allocating memory from a shared heap, memory for objects that are
2147 rapidly allocated and deallocated is now kept in pools. Allocation
2148 and deallocation from those memory pools is very fast. The shared
2149 heap is still present but is used less frequently.
2151 * The memory, memory pool, and packet buffer subsystems now support
2152 4-, 2-, or 1-byte alignment.
2154 * "Out of memory" situations are handled in a more robust way.
2156 * Stack usage has been reduced.
2158 * Easier configuration of lwIP parameters such as memory usage,
2159 TTLs, statistics gathering, etc. All configuration parameters are
2160 now kept in a single header file "lwipopts.h".
2162 * The directory structure has been changed slightly so that all
2163 architecture specific files are kept under the src/arch
2166 * Error propagation has been improved, both in the protocol modules
2169 * The code for the RTXC architecture has been implemented, tested
2172 * Bugs have been found and corrected in the TCP, UDP, IP, API, and
2173 the Internet checksum modules.
2175 * Bugs related to porting between a 32-bit and a 16-bit architecture
2176 have been found and corrected.
2178 * The license has been changed slightly to conform more with the
2179 original BSD license, including the advertisement clause.
2181 (0.3.1) Changes since version 0.3
2183 * Fix of a fatal bug in the buffer management. Pbufs with allocated
2184 RAM never returned the RAM when the pbuf was deallocated.
2186 * TCP congestion control, window updates and retransmissions did not
2187 work correctly. This has now been fixed.
2189 * Bugfixes in the API.
2191 (0.3) Changes since version 0.2
2193 * New and improved directory structure. All include files are now
2194 kept in a dedicated include/ directory.
2196 * The API now has proper error handling. A new function,
2197 netconn_err(), now returns an error code for the connection in
2200 * Improvements in the memory management subsystem. The system now
2201 keeps a pointer to the lowest free memory block. A new function,
2202 mem_malloc2() tries to allocate memory once, and if it fails tries
2203 to free some memory and retry the allocation.
2205 * Much testing has been done with limited memory
2206 configurations. lwIP now does a better job when overloaded.
2208 * Some bugfixes and improvements to the buffer (pbuf) subsystem.
2210 * Many bugfixes in the TCP code:
2212 - Fixed a bug in tcp_close().
2214 - The TCP receive window was incorrectly closed when out of
2215 sequence segments was received. This has been fixed.
2217 - Connections are now timed-out of the FIN-WAIT-2 state.
2219 - The initial congestion window could in some cases be too
2220 large. This has been fixed.
2222 - The retransmission queue could in some cases be screwed up. This
2225 - TCP RST flag now handled correctly.
2227 - Out of sequence data was in some cases never delivered to the
2228 application. This has been fixed.
2230 - Retransmitted segments now contain the correct acknowledgment
2231 number and advertised window.
2233 - TCP retransmission timeout backoffs are not correctly computed
2234 (ala BSD). After a number of retransmissions, TCP now gives up
2237 * TCP connections now are kept on three lists, one for active
2238 connections, one for listening connections, and one for
2239 connections that are in TIME-WAIT. This greatly speeds up the fast
2240 timeout processing for sending delayed ACKs.
2242 * TCP now provides proper feedback to the application when a
2243 connection has been successfully set up.
2245 * More comments have been added to the code. The code has also been
2246 somewhat cleaned up.
2248 (0.2) Initial public release.