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]
30 2009-10-27 Simon Goldschmidt/Stephan Lesage
31 * netifapi.c/.h: Added netifapi_netif_set_addr()
33 2009-10-07 Simon Goldschmidt/Fabian Koch
34 * api_msg.c, netbuf.c/.h, opt.h: patch #6888: Patch for UDP Netbufs to
35 support dest-addr and dest-port (optional: LWIP_NETBUF_RECVINFO)
37 2009-08-26 Simon Goldschmidt/Simon Kallweit
38 * slipif.c/.h: bug #26397: SLIP polling support
40 2009-08-25 Simon Goldschmidt
41 * opt.h, etharp.h/.c: task #9033: Support IEEE 802.1q tagged frame (VLAN),
42 New configuration options ETHARP_SUPPORT_VLAN and ETHARP_VLAN_CHECK.
44 2009-08-25 Simon Goldschmidt
45 * ip_addr.h, netdb.c: patch #6900: added define ip_ntoa(struct ip_addr*)
47 2009-08-24 Jakob Stoklund Olesen
48 * autoip.c, dhcp.c, netif.c: patch #6725: Teach AutoIP and DHCP to respond
49 to netif_set_link_up().
51 2009-08-23 Simon Goldschmidt
52 * tcp.h/.c: Added function tcp_debug_state_str() to convert a tcp state
53 to a human-readable string.
57 2009-12-24: Kieran Mansley
58 * tcp_in.c Apply patches from Oleg Tyshev to improve OOS processing
61 2009-12-06: Simon Goldschmidt
62 * ppp.h/.c: Fixed bug #27079 (Yet another leak in PPP): outpacket_buf can
63 be statically allocated (like in ucip)
65 2009-12-04: Simon Goldschmidt (patch by Ioardan Neshev)
66 * pap.c: patch #6969: PPP: missing PAP authentication UNTIMEOUT
68 2009-12-03: Simon Goldschmidt
69 * tcp.h, tcp_in.c, tcp_out.c: Fixed bug #28106: dup ack for fast retransmit
70 could have non-zero length
72 2009-12-02: Simon Goldschmidt
73 * tcp_in.c: Fixed bug #27904: TCP sends too many ACKs: delay resetting
74 tcp_input_pcb until after calling the pcb's callbacks
76 2009-11-29: Simon Goldschmidt
77 * tcp_in.c: Fixed bug #28054: Two segments with FIN flag on the out-of-
78 sequence queue, also fixed PBUF_POOL leak in the out-of-sequence code
80 2009-11-29: Simon Goldschmidt
81 * pbuf.c: Fixed bug #28064: pbuf_alloc(PBUF_POOL) is not thread-safe by
82 queueing a call into tcpip_thread to free ooseq-bufs if the pool is empty
84 2009-11-26: Simon Goldschmidt
85 * tcp.h: Fixed bug #28098: Nagle can prevent fast retransmit from sending
88 2009-11-26: Simon Goldschmidt
89 * tcp.h, sockets.c: Fixed bug #28099: API required to disable Nagle
90 algorithm at PCB level
92 2009-11-22: Simon Goldschmidt
93 * tcp_out.c: Fixed bug #27905: FIN isn't combined with data on unsent
95 2009-11-22: Simon Goldschmidt (suggested by Bill Auerbach)
96 * tcp.c: tcp_alloc: prevent increasing stats.err for MEMP_TCP_PCB when
99 2009-11-20: Simon Goldschmidt (patch by Albert Bartel)
100 * sockets.c: Fixed bug #28062: Data received directly after accepting
101 does not wake up select
103 2009-11-11: Simon Goldschmidt
104 * netdb.h: Fixed bug #27994: incorrect define for freeaddrinfo(addrinfo)
106 2009-10-30: Simon Goldschmidt
107 * opt.h: Increased default value for TCP_MSS to 536, updated default
108 value for TCP_WND to 4*TCP_MSS to keep delayed ACK working.
110 2009-10-28: Kieran Mansley
111 * tcp_in.c, tcp_out.c, tcp.h: re-work the fast retransmission code
112 to follow algorithm from TCP/IP Illustrated
114 2009-10-27: Kieran Mansley
115 * tcp_in.c: fix BUG#27445: grow cwnd with every duplicate ACK
117 2009-10-25: Simon Goldschmidt
118 * tcp.h: bug-fix in the TCP_EVENT_RECV macro (has to call tcp_recved if
119 pcb->recv is NULL to keep rcv_wnd correct)
121 2009-10-25: Simon Goldschmidt
122 * tcp_in.c: Fixed bug #26251: RST process in TIME_WAIT TCP state
124 2009-10-23: Simon Goldschmidt (David Empson)
125 * tcp.c: Fixed bug #27783: Silly window avoidance for small window sizes
127 2009-10-21: Simon Goldschmidt
128 * tcp_in.c: Fixed bug #27215: TCP sent() callback gives leading and
129 trailing 1 byte len (SYN/FIN)
131 2009-10-21: Simon Goldschmidt
132 * tcp_out.c: Fixed bug #27315: zero window probe and FIN
134 2009-10-19: Simon Goldschmidt
135 * dhcp.c/.h: Minor code simplification (don't store received pbuf, change
136 conditional code to assert where applicable), check pbuf length before
137 testing for valid reply
139 2009-10-19: Simon Goldschmidt
140 * dhcp.c: Removed most calls to udp_connect since they aren't necessary
141 when using udp_sendto_if() - always stay connected to IP_ADDR_ANY.
143 2009-10-16: Simon Goldschmidt
144 * ip.c: Fixed bug #27390: Source IP check in ip_input() causes it to drop
145 valid DHCP packets -> allow 0.0.0.0 as source address when LWIP_DHCP is
148 2009-10-15: Simon Goldschmidt (Oleg Tyshev)
149 * tcp_in.c: Fixed bug #27329: dupacks by unidirectional data transmit
151 2009-10-15: Simon Goldschmidt
152 * api_lib.c: Fixed bug #27709: conn->err race condition on netconn_recv()
155 2009-10-15: Simon Goldschmidt
156 * autoip.c: Fixed bug #27704: autoip starts with wrong address
157 LWIP_AUTOIP_CREATE_SEED_ADDR() returned address in host byte order instead
158 of network byte order
160 2009-10-11 Simon Goldschmidt (Jörg Kesten)
161 * tcp_out.c: Fixed bug #27504: tcp_enqueue wrongly concatenates segments
162 which are not consecutive when retransmitting unacked segments
164 2009-10-09 Simon Goldschmidt
165 * opt.h: Fixed default values of some stats to only be enabled if used
166 Fixes bug #27338: sys_stats is defined when NO_SYS = 1
168 2009-08-30 Simon Goldschmidt
169 * ip.c: Fixed bug bug #27345: "ip_frag() does not use the LWIP_NETIF_LOOPBACK
170 function" by checking for loopback before calling ip_frag
172 2009-08-25 Simon Goldschmidt
173 * dhcp.c: fixed invalid dependency to etharp_query if DHCP_DOES_ARP_CHECK==0
175 2009-08-23 Simon Goldschmidt
176 * ppp.c: bug #27078: Possible memory leak in pppInit()
178 2009-08-23 Simon Goldschmidt
179 * netdb.c, dns.c: bug #26657: DNS, if host name is "localhost", result
182 2009-08-23 Simon Goldschmidt
183 * opt.h, init.c: bug #26649: TCP fails when TCP_MSS > TCP_SND_BUF
184 Fixed wrong parenthesis, added check in init.c
186 2009-08-23 Simon Goldschmidt
187 * ppp.c: bug #27266: wait-state debug message in pppMain occurs every ms
189 2009-08-23 Simon Goldschmidt
190 * many ppp files: bug #27267: Added include to string.h where needed
192 2009-08-23 Simon Goldschmidt
193 * tcp.h: patch #6843: tcp.h macro optimization patch (for little endian)
200 2009-05-10 Simon Goldschmidt
201 * opt.h, sockets.c, pbuf.c, netbuf.h, pbuf.h: task #7013: Added option
202 LWIP_NETIF_TX_SINGLE_PBUF to try to create transmit packets from only
203 one pbuf to help MACs that don't support scatter-gather DMA.
205 2009-05-09 Simon Goldschmidt
206 * icmp.h, icmp.c: Shrinked ICMP code, added option to NOT check icoming
207 ECHO pbuf for size (just use it): LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN
209 2009-05-05 Simon Goldschmidt, Jakob Stoklund Olesen
210 * ip.h, ip.c: Added ip_current_netif() & ip_current_header() to receive
211 extended info about the currently received packet.
213 2009-04-27 Simon Goldschmidt
214 * sys.h: Made SYS_LIGHTWEIGHT_PROT and sys_now() work with NO_SYS=1
216 2009-04-25 Simon Goldschmidt
217 * mem.c, opt.h: Added option MEM_USE_POOLS_TRY_BIGGER_POOL to try the next
218 bigger malloc pool if one is empty (only usable with MEM_USE_POOLS).
220 2009-04-21 Simon Goldschmidt
221 * dns.c, init.c, dns.h, opt.h: task #7507, patch #6786: DNS supports static
222 hosts table. New configuration options DNS_LOCAL_HOSTLIST and
223 DNS_LOCAL_HOSTLIST_IS_DYNAMIC. Also, DNS_LOOKUP_LOCAL_EXTERN() can be defined
224 as an external function for lookup.
226 2009-04-15 Simon Goldschmidt
227 * dhcp.c: patch #6763: Global DHCP XID can be redefined to something more unique
229 2009-03-31 Kieran Mansley
230 * tcp.c, tcp_out.c, tcp_in.c, sys.h, tcp.h, opts.h: add support for
231 TCP timestamp options, off by default. Rework tcp_enqueue() to
232 take option flags rather than specified option data
234 2009-02-18 Simon Goldschmidt
235 * cc.h: Added printf formatter for size_t: SZT_F
237 2009-02-16 Simon Goldschmidt (patch by Rishi Khan)
238 * icmp.c, opt.h: patch #6539: (configurable) response to broadcast- and multicast
241 2009-02-12 Simon Goldschmidt
242 * init.h: Added LWIP_VERSION to get the current version of the stack
244 2009-02-11 Simon Goldschmidt (suggested by Gottfried Spitaler)
245 * opt.h, memp.h/.c: added MEMP_MEM_MALLOC to use mem_malloc/mem_free instead
246 of the pool allocator (can save code size with MEM_LIBC_MALLOC if libc-malloc
249 2009-01-28 Jonathan Larmour (suggested by Bill Bauerbach)
250 * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h: inet_chksum_pseudo_partial()
251 is only used by UDPLITE at present, so conditionalise it.
253 2008-12-03 Simon Goldschmidt (base on patch from Luca Ceresoli)
254 * autoip.c: checked in (slightly modified) patch #6683: Customizable AUTOIP
255 "seed" address. This should reduce AUTOIP conflicts if
256 LWIP_AUTOIP_CREATE_SEED_ADDR is overridden.
258 2008-10-02 Jonathan Larmour and Rishi Khan
259 * sockets.c (lwip_accept): Return EWOULDBLOCK if would block on non-blocking
262 2008-06-30 Simon Goldschmidt
263 * mem.c, opt.h, stats.h: fixed bug #21433: Calling mem_free/pbuf_free from
264 interrupt context isn't safe: LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT allows
265 mem_free to run between mem_malloc iterations. Added illegal counter for
268 2008-06-27 Simon Goldschmidt
269 * stats.h/.c, some other files: patch #6483: stats module improvement:
270 Added defines to display each module's statistic individually, added stats
271 defines for MEM, MEMP and SYS modules, removed (unused) rexmit counter.
273 2008-06-17 Simon Goldschmidt
274 * err.h: patch #6459: Made err_t overridable to use a more efficient type
275 (define LWIP_ERR_T in cc.h)
277 2008-06-17 Simon Goldschmidt
278 * slipif.c: patch #6480: Added a configuration option for slipif for symmetry
281 2008-06-17 Simon Goldschmidt (patch by Luca Ceresoli)
282 * netif.c, loopif.c, ip.c, netif.h, loopif.h, opt.h: Checked in slightly
283 modified version of patch # 6370: Moved loopif code to netif.c so that
284 loopback traffic is supported on all netifs (all local IPs).
285 Added option to limit loopback packets for each netifs.
289 2009-08-12 Kieran Mansley
290 * tcp_in.c, tcp.c: Fix bug #27209: handle trimming of segments when
291 out of window or out of order properly
293 2009-08-12 Kieran Mansley
294 * tcp_in.c: Fix bug #27199: use snd_wl2 instead of snd_wl1
296 2009-07-28 Simon Goldschmidt
297 * mem.h: Fixed bug #27105: "realloc() cannot replace mem_realloc()"s
299 2009-07-27 Kieran Mansley
300 * api.h api_msg.h netdb.h sockets.h: add missing #include directives
302 2009-07-09 Kieran Mansley
303 * api_msg.c, sockets.c, api.h: BUG23240 use signed counters for
304 recv_avail and don't increment counters until message successfully
307 2009-06-25 Kieran Mansley
308 * api_msg.c api.h: BUG26722: initialise netconn write variables
311 2009-06-25 Kieran Mansley
312 * tcp.h: BUG26879: set ret value in TCP_EVENT macros when function is not set
314 2009-06-25 Kieran Mansley
315 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: BUG26301 and BUG26267: correct
316 simultaneous close behaviour, and make snd_nxt have the same meaning
319 2009-05-12 Simon Goldschmidt
320 * etharp.h, etharp.c, netif.c: fixed bug #26507: "Gratuitous ARP depends on
321 arp_table / uses etharp_query" by adding etharp_gratuitous()
323 2009-05-12 Simon Goldschmidt
324 * ip.h, ip.c, igmp.c: bug #26487: Added ip_output_if_opt that can add IP options
325 to the IP header (used by igmp_ip_output_if)
327 2009-05-06 Simon Goldschmidt
328 * inet_chksum.c: On little endian architectures, use LWIP_PLATFORM_HTONS (if
329 defined) for SWAP_BYTES_IN_WORD to speed up checksumming.
331 2009-05-05 Simon Goldschmidt
332 * sockets.c: bug #26405: Prematurely released semaphore causes lwip_select()
335 2009-05-04 Simon Goldschmidt
336 * init.c: snmp was not initialized in lwip_init()
338 2009-05-04 Frédéric Bernon
339 * dhcp.c, netbios.c: Changes if IP_SOF_BROADCAST is enabled.
341 2009-05-03 Simon Goldschmidt
342 * tcp.h: bug #26349: Nagle algorithm doesn't send although segment is full
343 (and unsent->next == NULL)
345 2009-05-02 Simon Goldschmidt
346 * tcpip.h, tcpip.c: fixed tcpip_untimeout (does not need the time, broken after
347 1.3.0 in CVS only) - fixes compilation of ppp_oe.c
349 2009-05-02 Simon Goldschmidt
350 * msg_in.c: fixed bug #25636: SNMPSET value is ignored for integer fields
352 2009-05-01 Simon Goldschmidt
353 * pap.c: bug #21680: PPP upap_rauthnak() drops legal NAK packets
355 2009-05-01 Simon Goldschmidt
356 * ppp.c: bug #24228: Memory corruption with PPP and DHCP
358 2009-04-29 Frédéric Bernon
359 * raw.c, udp.c, init.c, opt.h, ip.h, sockets.h: bug #26309: Implement the
360 SO(F)_BROADCAST filter for all API layers. Avoid the unindented reception
361 of broadcast packets even when this option wasn't set. Port maintainers
362 which want to enable this filter have to set IP_SOF_BROADCAST=1 in opt.h.
363 If you want this option also filter broadcast on recv operations, you also
364 have to set IP_SOF_BROADCAST_RECV=1 in opt.h.
366 2009-04-28 Simon Goldschmidt, Jakob Stoklund Olesen
367 * dhcp.c: patch #6721, bugs #25575, #25576: Some small fixes to DHCP and
368 DHCP/AUTOIP cooperation
370 2009-04-25 Simon Goldschmidt, Oleg Tyshev
371 * tcp_out.c: bug #24212: Deadlocked tcp_retransmit due to exceeded pcb->cwnd
372 Fixed by sorting the unsent and unacked queues (segments are inserted at the
373 right place in tcp_output and tcp_rexmit).
375 2009-04-25 Simon Goldschmidt
376 * memp.c, mem.c, memp.h, mem_std.h: bug #26213 "Problem with memory allocation
377 when debugging": memp_sizes contained the wrong sizes (including sanity
378 regions); memp pools for MEM_USE_POOLS were too small
380 2009-04-24 Simon Goldschmidt, Frédéric Bernon
381 * inet.c: patch #6765: Fix a small problem with the last changes (incorrect
382 behavior, with with ip address string not ended by a '\0', a space or a
385 2009-04-19 Simon Goldschmidt
386 * rawapi.txt: Fixed bug #26069: Corrected documentation: if tcp_connect fails,
387 pcb->err is called, not pcb->connected (with an error code).
389 2009-04-19 Simon Goldschmidt
390 * tcp_out.c: Fixed bug #26236: "TCP options (timestamp) don't work with
391 no-copy-tcpwrite": deallocate option data, only concat segments with same flags
393 2009-04-19 Simon Goldschmidt
394 * tcp_out.c: Fixed bug #25094: "Zero-length pbuf" (options are now allocated
395 in the header pbuf, not the data pbuf)
397 2009-04-18 Simon Goldschmidt
398 * api_msg.c: fixed bug #25695: Segmentation fault in do_writemore()
400 2009-04-15 Simon Goldschmidt
401 * sockets.c: tried to fix bug #23559: lwip_recvfrom problem with tcp
403 2009-04-15 Simon Goldschmidt
404 * dhcp.c: task #9192: mem_free of dhcp->options_in and dhcp->msg_in
406 2009-04-15 Simon Goldschmidt
407 * ip.c, ip6.c, tcp_out.c, ip.h: patch #6808: Add a utility function
408 ip_hinted_output() (for smaller code mainly)
410 2009-04-15 Simon Goldschmidt
411 * inet.c: patch #6765: Supporting new line characters in inet_aton()
413 2009-04-15 Simon Goldschmidt
414 * dhcp.c: patch #6764: DHCP rebind and renew did not send hostnam option;
415 Converted constant OPTION_MAX_MSG_SIZE to netif->mtu, check if netif->mtu
416 is big enough in dhcp_start
418 2009-04-15 Simon Goldschmidt
419 * netbuf.c: bug #26027: netbuf_chain resulted in pbuf memory leak
421 2009-04-15 Simon Goldschmidt
422 * sockets.c, ppp.c: bug #25763: corrected 4 occurrences of SMEMCPY to MEMCPY
424 2009-04-15 Simon Goldschmidt
425 * sockets.c: bug #26121: set_errno can be overridden
427 2009-04-09 Kieran Mansley (patch from Luca Ceresoli <lucaceresoli>)
428 * init.c, opt.h: Patch#6774 TCP_QUEUE_OOSEQ breaks compilation when
431 2009-04-09 Kieran Mansley (patch from Roy Lee <roylee17>)
432 * tcp.h: Patch#6802 Add do-while-clauses to those function like
435 2009-03-31 Kieran Mansley
436 * tcp.c, tcp_in.c, tcp_out.c, tcp.h, opt.h: Rework the way window
437 updates are calculated and sent (BUG20515)
439 * tcp_in.c: cope with SYN packets received during established states,
440 and retransmission of initial SYN.
442 * tcp_out.c: set push bit correctly when tcp segments are merged
444 2009-03-27 Kieran Mansley
445 * tcp_out.c set window correctly on probes (correcting change made
448 2009-03-26 Kieran Mansley
449 * tcp.c, tcp_in.c, tcp.h: add tcp_abandon() to cope with dropping
450 connections where no reset required (bug #25622)
452 * tcp_out.c: set TCP_ACK flag on keepalive and zero window probes
455 2009-02-18 Simon Goldschmidt (Jonathan Larmour and Bill Auerbach)
456 * ip_frag.c: patch #6528: the buffer used for IP_FRAG_USES_STATIC_BUF could be
457 too small depending on MEM_ALIGNMENT
459 2009-02-16 Simon Goldschmidt
460 * sockets.h/.c, api_*.h/.c: fixed arguments of socket functions to match the standard;
461 converted size argument of netconn_write to 'size_t'
463 2009-02-16 Simon Goldschmidt
464 * tcp.h, tcp.c: fixed bug #24440: TCP connection close problem on 64-bit host
465 by moving accept callback function pointer to TCP_PCB_COMMON
467 2009-02-12 Simon Goldschmidt
468 * dhcp.c: fixed bug #25345 (DHCPDECLINE is sent with "Maximum message size"
471 2009-02-11 Simon Goldschmidt
472 * dhcp.c: fixed bug #24480 (releasing old udp_pdb and pbuf in dhcp_start)
474 2009-02-11 Simon Goldschmidt
475 * opt.h, api_msg.c: added configurable default valud for netconn->recv_bufsize:
476 RECV_BUFSIZE_DEFAULT (fixes bug #23726: pbuf pool exhaustion on slow recv())
478 2009-02-10 Simon Goldschmidt
479 * tcp.c: fixed bug #25467: Listen backlog is not reset on timeout in SYN_RCVD:
480 Accepts_pending is decrease on a corresponding listen pcb when a connection
481 in state SYN_RCVD is close.
483 2009-01-28 Jonathan Larmour
484 * pbuf.c: reclaim pbufs from TCP out-of-sequence segments if we run
487 2008-12-19 Simon Goldschmidt
488 * many files: patch #6699: fixed some warnings on platform where sizeof(int) == 2
490 2008-12-10 Tamas Somogyi, Frédéric Bernon
491 * sockets.c: fixed bug #25051: lwip_recvfrom problem with udp: fromaddr and
492 port uses deleted netbuf.
494 2008-10-18 Simon Goldschmidt
495 * tcp_in.c: fixed bug ##24596: Vulnerability on faulty TCP options length
498 2008-10-15 Simon Goldschmidt
499 * ip_frag.c: fixed bug #24517: IP reassembly crashes on unaligned IP headers
500 by packing the struct ip_reass_helper.
502 2008-10-03 David Woodhouse, Jonathan Larmour
503 * etharp.c (etharp_arp_input): Fix type aliasing problem copying ip address.
505 2008-10-02 Jonathan Larmour
506 * dns.c: Hard-code structure sizes, to avoid issues on some compilers where
509 2008-09-30 Jonathan Larmour
510 * sockets.c (lwip_accept): check addr isn't NULL. If it's valid, do an
511 assertion check that addrlen isn't NULL.
513 2008-09-30 Jonathan Larmour
514 * tcp.c: Fix bug #24227, wrong error message in tcp_bind.
516 2008-08-26 Simon Goldschmidt
517 * inet.h, ip_addr.h: fixed bug #24132: Cross-dependency between ip_addr.h and
518 inet.h -> moved declaration of struct in_addr from ip_addr.h to inet.h
520 2008-08-14 Simon Goldschmidt
521 * api_msg.c: fixed bug #23847: do_close_internal references freed memory (when
522 tcp_close returns != ERR_OK)
524 2008-07-08 Frédéric Bernon
525 * stats.h: Fix some build bugs introduced with patch #6483 (missing some parameters
526 in macros, mainly if MEM_STATS=0 and MEMP_STATS=0).
528 2008-06-24 Jonathan Larmour
529 * tcp_in.c: Fix for bug #23693 as suggested by Art R. Ensure cseg is unused
530 if tcp_seg_copy fails.
532 2008-06-17 Simon Goldschmidt
533 * inet_chksum.c: Checked in some ideas of patch #6460 (loop optimizations)
534 and created defines for swapping bytes and folding u32 to u16.
536 2008-05-30 Kieran Mansley
537 * tcp_in.c Remove redundant "if" statement, and use real rcv_wnd
538 rather than rcv_ann_wnd when deciding if packets are in-window.
539 Contributed by <arasmussen@consultant.datasys.swri.edu>
541 2008-05-30 Kieran Mansley
542 * mem.h: Fix BUG#23254. Change macro definition of mem_* to allow
543 passing as function pointers when MEM_LIBC_MALLOC is defined.
545 2008-05-09 Jonathan Larmour
546 * err.h, err.c, sockets.c: Fix bug #23119: Reorder timeout error code to
547 stop it being treated as a fatal error.
549 2008-04-15 Simon Goldschmidt
550 * dhcp.c: fixed bug #22804: dhcp_stop doesn't clear NETIF_FLAG_DHCP
553 2008-03-27 Simon Goldschmidt
554 * mem.c, tcpip.c, tcpip.h, opt.h: fixed bug #21433 (Calling mem_free/pbuf_free
555 from interrupt context isn't safe): set LWIP_USE_HEAP_FROM_INTERRUPT to 1
556 in lwipopts.h or use pbuf_free_callback(p)/mem_free_callback(m) to free pbufs
557 or heap memory from interrupt context
559 2008-03-26 Simon Goldschmidt
560 * tcp_in.c, tcp.c: fixed bug #22249: division by zero could occur if a remote
561 host sent a zero mss as TCP option.
568 2008-03-10 Jonathan Larmour
569 * inet_chksum.c: Allow choice of one of the sample algorithms to be
570 made from lwipopts.h. Fix comment on how to override LWIP_CHKSUM.
572 2008-01-22 Frédéric Bernon
573 * tcp.c, tcp_in.c, tcp.h, opt.h: Rename LWIP_CALCULATE_EFF_SEND_MSS in
574 TCP_CALCULATE_EFF_SEND_MSS to have coherent TCP options names.
576 2008-01-14 Frédéric Bernon
577 * rawapi.txt, api_msg.c, tcp.c, tcp_in.c, tcp.h: changes for task #7675 "Enable
578 to refuse data on a TCP_EVENT_RECV call". Important, behavior changes for the
579 tcp_recv callback (see rawapi.txt).
581 2008-01-14 Frédéric Bernon, Marc Chaland
582 * ip.c: Integrate patch #6369" ip_input : checking before realloc".
584 2008-01-12 Frédéric Bernon
585 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
586 netconn::sem per netconn::op_completed like suggested for the task #7490
587 "Add return value to sys_mbox_post".
589 2008-01-12 Frédéric Bernon
590 * api_msg.c, opt.h: replace DEFAULT_RECVMBOX_SIZE per DEFAULT_TCP_RECVMBOX_SIZE,
591 DEFAULT_UDP_RECVMBOX_SIZE and DEFAULT_RAW_RECVMBOX_SIZE (to optimize queues
592 sizes), like suggested for the task #7490 "Add return value to sys_mbox_post".
594 2008-01-10 Frédéric Bernon
595 * tcpip.h, tcpip.c: add tcpip_callback_with_block function for the task #7490
596 "Add return value to sys_mbox_post". tcpip_callback is always defined as
597 "blocking" ("block" parameter = 1).
599 2008-01-10 Frédéric Bernon
600 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
601 netconn::mbox (sys_mbox_t) per netconn::sem (sys_sem_t) for the task #7490
602 "Add return value to sys_mbox_post".
604 2008-01-05 Frédéric Bernon
605 * sys_arch.txt, api.h, api_lib.c, api_msg.h, api_msg.c, tcpip.c, sys.h, opt.h:
606 Introduce changes for task #7490 "Add return value to sys_mbox_post" with some
607 modifications in the sys_mbox api: sys_mbox_new take a "size" parameters which
608 indicate the number of pointers query by the mailbox. There is three defines
609 in opt.h to indicate sizes for tcpip::mbox, netconn::recvmbox, and for the
610 netconn::acceptmbox. Port maintainers, you can decide to just add this new
611 parameter in your implementation, but to ignore it to keep the previous behavior.
612 The new sys_mbox_trypost function return a value to know if the mailbox is
613 full or if the message is posted. Take a look to sys_arch.txt for more details.
614 This new function is used in tcpip_input (so, can be called in an interrupt
615 context since the function is not blocking), and in recv_udp and recv_raw.
617 2008-01-04 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
618 * rawapi.txt, api.h, api_lib.c, api_msg.h, api_msg.c, sockets.c, tcp.h, tcp.c,
619 tcp_in.c, init.c, opt.h: rename backlog options with TCP_ prefix, limit the
620 "backlog" parameter in an u8_t, 0 is interpreted as "smallest queue", add
621 documentation in the rawapi.txt file.
623 2007-12-31 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
624 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Add TCP persist timer
626 2007-12-31 Frédéric Bernon, Luca Ceresoli
627 * autoip.c, etharp.c: ip_addr.h: Integrate patch #6348: "Broadcast ARP packets
628 in autoip". The change in etharp_raw could be removed, since all calls to
629 etharp_raw use ethbroadcast for the "ethdst_addr" parameter. But it could be
632 2007-12-30 Frédéric Bernon, Tom Evans
633 * ip.c: Fix bug #21846 "LwIP doesn't appear to perform any IP Source Address
634 Filtering" reported by Tom Evans.
636 2007-12-21 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
637 * tcp.h, opt.h, api.h, api_msg.h, tcp.c, tcp_in.c, api_lib.c, api_msg.c,
638 sockets.c, init.c: task #7252: Implement TCP listen backlog: Warning: raw API
639 applications have to call 'tcp_accepted(pcb)' in their accept callback to
640 keep accepting new connections.
642 2007-12-13 Frédéric Bernon
643 * api_msg.c, err.h, err.c, sockets.c, dns.c, dns.h: replace "enum dns_result"
644 by err_t type. Add a new err_t code "ERR_INPROGRESS".
646 2007-12-12 Frédéric Bernon
647 * dns.h, dns.c, opt.h: move DNS options to the "right" place. Most visibles
648 are the one which have ram usage.
650 2007-12-05 Frédéric Bernon
651 * netdb.c: add a LWIP_DNS_API_HOSTENT_STORAGE option to decide to use a static
652 set of variables (=0) or a local one (=1). In this last case, your port should
653 provide a function "struct hostent* sys_thread_hostent( struct hostent* h)"
654 which have to do a copy of "h" and return a pointer ont the "per-thread" copy.
656 2007-12-03 Simon Goldschmidt
657 * ip.c: ip_input: check if a packet is for inp first before checking all other
658 netifs on netif_list (speeds up packet receiving in most cases)
660 2007-11-30 Simon Goldschmidt
661 * udp.c, raw.c: task #7497: Sort lists (pcb, netif, ...) for faster access
662 UDP: move a (connected) pcb selected for input to the front of the list of
663 pcbs so that it is found faster next time. Same for RAW pcbs that have eaten
666 2007-11-28 Simon Goldschmidt
667 * etharp.c, stats.c, stats.h, opt.h: Introduced ETHARP_STATS
669 2007-11-25 Simon Goldschmidt
670 * dhcp.c: dhcp_unfold_reply() uses pbuf_copy_partial instead of its own copy
673 2007-11-24 Simon Goldschmidt
674 * netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c
675 to the new file netdb.c; included lwip_getaddrinfo.
677 2007-11-21 Simon Goldschmidt
678 * tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
679 based on the MTU of the netif used to send. Enabled by default. Disable by
680 setting LWIP_CALCULATE_EFF_SEND_MSS to 0. This fixes bug #21492.
682 2007-11-19 Frédéric Bernon
683 * api_msg.c, dns.h, dns.c: Implement DNS_DOES_NAME_CHECK option (check if name
684 received match the name query), implement DNS_USES_STATIC_BUF (the place where
685 copy dns payload to parse the response), return an error if there is no place
686 for a new query, and fix some minor problems.
688 2007-11-16 Simon Goldschmidt
689 * new files: ipv4/inet.c, ipv4/inet_chksum.c, ipv6/inet6.c
690 removed files: core/inet.c, core/inet6.c
691 Moved inet files into ipv4/ipv6 directory; splitted inet.c/inet.h into
692 inet and chksum part; changed includes in all lwIP files as appropriate
694 2007-11-16 Simon Goldschmidt
695 * api.h, api_msg.h, api_lib.c, api_msg.c, socket.h, socket.c: Added sequential
696 dns resolver function for netconn api (netconn_gethostbyname) and socket api
697 (gethostbyname/gethostbyname_r).
699 2007-11-15 Jim Pettinato, Frédéric Bernon
700 * opt.h, init.c, tcpip.c, dhcp.c, dns.h, dns.c: add DNS client for simple name
701 requests with RAW api interface. Initialization is done in lwip_init() with
702 build time options. DNS timer is added in tcpip_thread context. DHCP can set
703 DNS server ip addresses when options are received. You need to set LWIP_DNS=1
704 in your lwipopts.h file (LWIP_DNS=0 in opt.h). DNS_DEBUG can be set to get
705 some traces with LWIP_DEBUGF. Sanity check have been added. There is a "todo"
706 list with points to improve.
708 2007-11-06 Simon Goldschmidt
709 * opt.h, mib2.c: Patch #6215: added ifAdminStatus write support (if explicitly
710 enabled by defining SNMP_SAFE_REQUESTS to 0); added code to check link status
711 for ifOperStatus if LWIP_NETIF_LINK_CALLBACK is defined.
713 2007-11-06 Simon Goldschmidt
714 * api.h, api_msg.h and dependent files: Task #7410: Removed the need to include
715 core header files in api.h (ip/tcp/udp/raw.h) to hide the internal
716 implementation from netconn api applications.
718 2007-11-03 Frédéric Bernon
719 * api.h, api_lib.c, api_msg.c, sockets.c, opt.h: add SO_RCVBUF option for UDP &
720 RAW netconn. You need to set LWIP_SO_RCVBUF=1 in your lwipopts.h (it's disabled
721 by default). Netconn API users can use the netconn_recv_bufsize macro to access
722 it. This is a first release which have to be improve for TCP. Note it used the
723 netconn::recv_avail which need to be more "thread-safe" (note there is already
724 the problem for FIONREAD with lwip_ioctl/ioctlsocket).
726 2007-11-01 Frédéric Bernon, Marc Chaland
727 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, tcp.h, tcp_out.c:
728 Integrate "patch #6250 : MSG_MORE flag for send". MSG_MORE is used at socket api
729 layer, NETCONN_MORE at netconn api layer, and TCP_WRITE_FLAG_MORE at raw api
730 layer. This option enable to delayed TCP PUSH flag on multiple "write" calls.
731 Note that previous "copy" parameter for "write" APIs is now called "apiflags".
733 2007-10-24 Frédéric Bernon
734 * api.h, api_lib.c, api_msg.c: Add macro API_EVENT in the same spirit than
735 TCP_EVENT_xxx macros to get a code more readable. It could also help to remove
736 some code (like we have talk in "patch #5919 : Create compile switch to remove
737 select code"), but it could be done later.
739 2007-10-08 Simon Goldschmidt
740 * many files: Changed initialization: many init functions are not needed any
741 more since we now rely on the compiler initializing global and static
744 2007-10-06 Simon Goldschmidt
745 * ip_frag.c, memp.c, mib2.c, ip_frag.h, memp_std.h, opt.h: Changed IP_REASSEMBLY
746 to enqueue the received pbufs so that multiple packets can be reassembled
747 simultaneously and no static reassembly buffer is needed.
749 2007-10-05 Simon Goldschmidt
750 * tcpip.c, etharp.h, etharp.c: moved ethernet_input from tcpip.c to etharp.c so
751 all netifs (or ports) can use it.
753 2007-10-05 Frédéric Bernon
754 * netifapi.h, netifapi.c: add function netifapi_netif_set_default. Change the
755 common function to reduce a little bit the footprint (for all functions using
756 only the "netif" parameter).
758 2007-10-03 Frédéric Bernon
759 * netifapi.h, netifapi.c: add functions netifapi_netif_set_up, netifapi_netif_set_down,
760 netifapi_autoip_start and netifapi_autoip_stop. Use a common function to reduce
761 a little bit the footprint (for all functions using only the "netif" parameter).
763 2007-09-15 Frédéric Bernon
764 * udp.h, udp.c, sockets.c: Changes for "#20503 IGMP Improvement". Add IP_MULTICAST_IF
765 option in socket API, and a new field "multicast_ip" in "struct udp_pcb" (for
766 netconn and raw API users), only if LWIP_IGMP=1. Add getsockopt processing for
767 IP_MULTICAST_TTL and IP_MULTICAST_IF.
769 2007-09-10 Frédéric Bernon
770 * snmp.h, mib2.c: enable to remove SNMP timer (which consumne several cycles
771 even when it's not necessary). snmp_agent.txt tell to call snmp_inc_sysuptime()
772 each 10ms (but, it's intrusive if you use sys_timeout feature). Now, you can
773 decide to call snmp_add_sysuptime(100) each 1000ms (which is bigger "step", but
774 call to a lower frequency). Or, you can decide to not call snmp_inc_sysuptime()
775 or snmp_add_sysuptime(), and to define the SNMP_GET_SYSUPTIME(sysuptime) macro.
776 This one is undefined by default in mib2.c. SNMP_GET_SYSUPTIME is called inside
777 snmp_get_sysuptime(u32_t *value), and enable to change "sysuptime" value only
778 when it's queried (any direct call to "sysuptime" is changed by a call to
781 2007-09-09 Frédéric Bernon, Bill Florac
782 * igmp.h, igmp.c, netif.h, netif.c, ip.c: To enable to have interfaces with IGMP,
783 and others without it, there is a new NETIF_FLAG_IGMP flag to set in netif->flags
784 if you want IGMP on an interface. igmp_stop() is now called inside netif_remove().
785 igmp_report_groups() is now called inside netif_set_link_up() (need to have
786 LWIP_NETIF_LINK_CALLBACK=1) to resend reports once the link is up (avoid to wait
787 the next query message to receive the matching multicast streams).
789 2007-09-08 Frédéric Bernon
790 * sockets.c, ip.h, api.h, tcp.h: declare a "struct ip_pcb" which only contains
791 IP_PCB. Add in the netconn's "pcb" union a "struct ip_pcb *ip;" (no size change).
792 Use this new field to access to common pcb fields (ttl, tos, so_options, etc...).
793 Enable to access to these fields with LWIP_TCP=0.
795 2007-09-05 Frédéric Bernon
796 * udp.c, ipv4/icmp.c, ipv4/ip.c, ipv6/icmp.c, ipv6/ip6.c, ipv4/icmp.h,
797 ipv6/icmp.h, opt.h: Integrate "task #7272 : LWIP_ICMP option". The new option
798 LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default).
799 Be careful, disabling ICMP make your product non-compliant to RFC1122, but
800 help to reduce footprint, and to reduce "visibility" on the Internet.
802 2007-09-05 Frédéric Bernon, Bill Florac
803 * opt.h, sys.h, tcpip.c, slipif.c, ppp.c, sys_arch.txt: Change parameters list
804 for sys_thread_new (see "task #7252 : Create sys_thread_new_ex()"). Two new
805 parameters have to be provided: a task name, and a task stack size. For this
806 one, since it's platform dependant, you could define the best one for you in
807 your lwipopts.h. For port maintainers, you can just add these new parameters
808 in your sys_arch.c file, and but it's not mandatory, use them in your OS
811 2007-09-05 Frédéric Bernon
812 * inet.c, autoip.c, msg_in.c, msg_out.c, init.c: Move some build time checkings
813 inside init.c for task #7142 "Sanity check user-configurable values".
815 2007-09-04 Frédéric Bernon, Bill Florac
816 * igmp.h, igmp.c, memp_std.h, memp.c, init.c, opt.h: Replace mem_malloc call by
817 memp_malloc, and use a new MEMP_NUM_IGMP_GROUP option (see opt.h to define the
818 value). It will avoid potential fragmentation problems, use a counter to know
819 how many times a group is used on an netif, and free it when all applications
820 leave it. MEMP_NUM_IGMP_GROUP got 8 as default value (and init.c got a sanity
821 check if LWIP_IGMP!=0).
823 2007-09-03 Frédéric Bernon
824 * igmp.h, igmp.c, sockets.c, api_msg.c: Changes for "#20503 IGMP Improvement".
825 Initialize igmp_mac_filter to NULL in netif_add (this field should be set in
826 the netif's "init" function). Use the "imr_interface" field (for socket layer)
827 and/or the "interface" field (for netconn layer), for join/leave operations.
828 The igmp_join/leavegroup first parameter change from a netif to an ipaddr.
829 This field could be a netif's ipaddr, or "any" (same meaning than ip_addr_isany).
831 2007-08-30 Frédéric Bernon
832 * Add netbuf.h, netbuf.c, Change api.h, api_lib.c: #7249 "Split netbuf functions
833 from api/api_lib". Now netbuf API is independant of netconn, and can be used
834 with other API (application based on raw API, or future "socket2" API). Ports
835 maintainers just have to add src/api/netbuf.c in their makefile/projects.
837 2007-08-30 Frédéric Bernon, Jonathan Larmour
838 * init.c: Add first version of lwip_sanity_check for task #7142 "Sanity check
839 user-configurable values".
841 2007-08-29 Frédéric Bernon
842 * igmp.h, igmp.c, tcpip.c, init.c, netif.c: change igmp_init and add igmp_start.
843 igmp_start is call inside netif_add. Now, igmp initialization is in the same
844 spirit than the others modules. Modify some IGMP debug traces.
846 2007-08-29 Frédéric Bernon
847 * Add init.h, init.c, Change opt.h, tcpip.c: Task #7213 "Add a lwip_init function"
848 Add lwip_init function to regroup all modules initializations, and to provide
849 a place to add code for task #7142 "Sanity check user-configurable values".
850 Ports maintainers should remove direct initializations calls from their code,
851 and add init.c in their makefiles. Note that lwip_init() function is called
852 inside tcpip_init, but can also be used by raw api users since all calls are
853 disabled when matching options are disabled. Also note that their is new options
854 in opt.h, you should configure in your lwipopts.h (they are enabled per default).
856 2007-08-26 Marc Boucher
857 * api_msg.c: do_close_internal(): Reset the callbacks and arg (conn) to NULL
858 since they can under certain circumstances be called with an invalid conn
859 pointer after the connection has been closed (and conn has been freed).
861 2007-08-25 Frédéric Bernon (Artem Migaev's Patch)
862 * netif.h, netif.c: Integrate "patch #6163 : Function to check if link layer is up".
863 Add a netif_is_link_up() function if LWIP_NETIF_LINK_CALLBACK option is set.
865 2007-08-22 Frédéric Bernon
866 * netif.h, netif.c, opt.h: Rename LWIP_NETIF_CALLBACK in LWIP_NETIF_STATUS_CALLBACK
867 to be coherent with new LWIP_NETIF_LINK_CALLBACK option before next release.
869 2007-08-22 Frédéric Bernon
870 * tcpip.h, tcpip.c, ethernetif.c, opt.h: remove options ETHARP_TCPIP_INPUT &
871 ETHARP_TCPIP_ETHINPUT, now, only "ethinput" code is supported, even if the
872 name is tcpip_input (we keep the name of 1.2.0 function).
874 2007-08-17 Jared Grubb
875 * memp_std.h, memp.h, memp.c, mem.c, stats.c: (Task #7136) Centralize mempool
876 settings into new memp_std.h and optional user file lwippools.h. This adds
877 more dynamic mempools, and allows the user to create an arbitrary number of
878 mempools for mem_malloc.
880 2007-08-16 Marc Boucher
881 * api_msg.c: Initialize newconn->state to NETCONN_NONE in accept_function;
882 otherwise it was left to NETCONN_CLOSE and sent_tcp() could prematurely
883 close the connection.
885 2007-08-16 Marc Boucher
886 * sockets.c: lwip_accept(): check netconn_peer() error return.
888 2007-08-16 Marc Boucher
889 * mem.c, mem.h: Added mem_calloc().
891 2007-08-16 Marc Boucher
892 * tcpip.c, tcpip.h memp.c, memp.h: Added distinct memp (MEMP_TCPIP_MSG_INPKT)
893 for input packets to prevent floods from consuming all of MEMP_TCPIP_MSG
894 and starving other message types.
895 Renamed MEMP_TCPIP_MSG to MEMP_TCPIP_MSG_API
897 2007-08-16 Marc Boucher
898 * pbuf.c, pbuf.h, etharp.c, tcp_in.c, sockets.c: Split pbuf flags in pbuf
899 type and flgs (later renamed to flags).
900 Use enum pbuf_flag as pbuf_type. Renumber PBUF_FLAG_*.
901 Improved lwip_recvfrom(). TCP push now propagated.
903 2007-08-16 Marc Boucher
904 * ethernetif.c, contrib/ports/various: ethbroadcast now a shared global
907 2007-08-16 Marc Boucher
908 * ppp_oe.c ppp_oe.h, auth.c chap.c fsm.c lcp.c ppp.c ppp.h,
909 etharp.c ethernetif.c, etharp.h, opt.h tcpip.h, tcpip.c:
910 Added PPPoE support and various PPP improvements.
912 2007-07-25 Simon Goldschmidt
913 * api_lib.c, ip_frag.c, pbuf.c, api.h, pbuf.h: Introduced pbuf_copy_partial,
914 making netbuf_copy_partial use this function.
916 2007-07-25 Simon Goldschmidt
917 * tcp_in.c: Fix bug #20506: Slow start / initial congestion window starts with
918 2 * mss (instead of 1 * mss previously) to comply with some newer RFCs and
921 2007-07-13 Jared Grubb (integrated by Frédéric Bernon)
922 * opt.h, netif.h, netif.c, ethernetif.c: Add new configuration option to add
923 a link callback in the netif struct, and functions to handle it. Be carefull
924 for port maintainers to add the NETIF_FLAG_LINK_UP flag (like in ethernetif.c)
925 if you want to be sure to be compatible with future changes...
927 2007-06-30 Frédéric Bernon
928 * sockets.h, sockets.c: Implement MSG_PEEK flag for recv/recvfrom functions.
930 2007-06-21 Simon Goldschmidt
931 * etharp.h, etharp.c: Combined etharp_request with etharp_raw for both
932 LWIP_AUTOIP =0 and =1 to remove redundant code.
934 2007-06-21 Simon Goldschmidt
935 * mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option
936 MEM_USE_POOLS to use 4 pools with different sized elements instead of a
937 heap. This both prevents memory fragmentation and gives a higher speed
938 at the cost of more memory consumption. Turned off by default.
940 2007-06-21 Simon Goldschmidt
941 * api_lib.c, api_msg.c, api.h, api_msg.h: Converted the length argument of
942 netconn_write (and therefore also api_msg_msg.msg.w.len) from u16_t into
943 int to be able to send a bigger buffer than 64K with one time (mainly
944 used from lwip_send).
946 2007-06-21 Simon Goldschmidt
947 * tcp.h, api_msg.c: Moved the nagle algorithm from netconn_write/do_write
948 into a define (tcp_output_nagle) in tcp.h to provide it to raw api users, too.
950 2007-06-21 Simon Goldschmidt
951 * api.h, api_lib.c, api_msg.c: Fixed bug #20021: Moved sendbuf-processing in
952 netconn_write from api_lib.c to api_msg.c to also prevent multiple context-
953 changes on low memory or empty send-buffer.
955 2007-06-18 Simon Goldschmidt
956 * etharp.c, etharp.h: Changed etharp to use a defined hardware address length
957 of 6 to avoid loading netif->hwaddr_len every time (since this file is only
958 used for ethernet and struct eth_addr already had a defined length of 6).
960 2007-06-17 Simon Goldschmidt
961 * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets
962 to disable UDP checksum generation on transmit.
964 2007-06-13 Frédéric Bernon, Simon Goldschmidt
965 * debug.h, api_msg.c: change LWIP_ERROR to use it to check errors like invalid
966 pointers or parameters, and let the possibility to redefined it in cc.h. Use
967 this macro to check "conn" parameter in api_msg.c functions.
969 2007-06-11 Simon Goldschmidt
970 * sockets.c, sockets.h: Added UDP lite support for sockets
972 2007-06-10 Simon Goldschmidt
973 * udp.h, opt.h, api_msg.c, ip.c, udp.c: Included switch LWIP_UDPLITE (enabled
974 by default) to switch off UDP-Lite support if not needed (reduces udp.c code
977 2007-06-09 Dominik Spies (integrated by Frédéric Bernon)
978 * autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h:
979 AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and
980 LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt
981 (see TODO mark in the source code).
983 2007-06-09 Simon Goldschmidt
984 * etharp.h, etharp.c, ethernetif.c: Modified order of parameters for
985 etharp_output() to match netif->output so etharp_output() can be used
986 directly as netif->output to save one function call.
988 2007-06-08 Simon Goldschmidt
989 * netif.h, ethernetif.c, slipif.c, loopif.c: Added define
990 NETIF_INIT_SNMP(netif, type, speed) to initialize per-netif snmp variables,
991 added initialization of those to ethernetif, slipif and loopif.
993 2007-05-18 Simon Goldschmidt
994 * opt.h, ip_frag.c, ip_frag.h, ip.c: Added option IP_FRAG_USES_STATIC_BUF
995 (defaulting to off for now) that can be set to 0 to send fragmented
996 packets by passing PBUF_REFs down the stack.
998 2007-05-23 Frédéric Bernon
999 * api_lib.c: Implement SO_RCVTIMEO for accept and recv on TCP
1000 connections, such present in patch #5959.
1002 2007-05-23 Frédéric Bernon
1003 * api.h, api_lib.c, api_msg.c, sockets.c: group the different NETCONN_UDPxxx
1004 code in only one part...
1006 2007-05-18 Simon Goldschmidt
1007 * opt.h, memp.h, memp.c: Added option MEMP_OVERFLOW_CHECK to check for memp
1008 elements to overflow. This is achieved by adding some bytes before and after
1009 each pool element (increasing their size, of course), filling them with a
1010 prominent value and checking them on freeing the element.
1011 Set it to 2 to also check every element in every pool each time memp_malloc()
1012 or memp_free() is called (slower but more helpful).
1014 2007-05-10 Simon Goldschmidt
1015 * opt.h, memp.h, memp.c, pbuf.c (see task #6831): use a new memp pool for
1016 PBUF_POOL pbufs instead of the old pool implementation in pbuf.c to reduce
1019 2007-05-11 Frédéric Bernon
1020 * sockets.c, api_lib.c, api_msg.h, api_msg.c, netifapi.h, netifapi.c, tcpip.c:
1021 Include a function pointer instead of a table index in the message to reduce
1022 footprint. Disable some part of lwip_send and lwip_sendto if some options are
1023 not set (LWIP_TCP, LWIP_UDP, LWIP_RAW).
1025 2007-05-10 Simon Goldschmidt
1026 * *.h (except netif/ppp/*.h): Included patch #5448: include '#ifdef __cplusplus
1027 \ extern "C" {' in all header files. Now you can write your application using
1028 the lwIP stack in C++ and simply #include the core files. Note I have left
1029 out the netif/ppp/*h header files for now, since I don't know which files are
1030 included by applications and which are for internal use only.
1032 2007-05-09 Simon Goldschmidt
1033 * opt.h, *.c/*.h: Included patch #5920: Create define to override C-library
1034 memcpy. 2 Defines are created: MEMCPY() for normal memcpy, SMEMCPY() for
1035 situations where some compilers might inline the copy and save a function
1036 call. Also replaced all calls to memcpy() with calls to (S)MEMCPY().
1038 2007-05-08 Simon Goldschmidt
1039 * mem.h: If MEM_LIBC_MALLOC==1, allow the defines (e.g. mem_malloc() -> malloc())
1040 to be overriden in case the C-library malloc implementation is not protected
1041 against concurrent access.
1043 2007-05-04 Simon Goldschmidt (Atte Kojo)
1044 * etharp.c: Introduced fast one-entry-cache to speed up ARP lookup when sending
1045 multiple packets to the same host.
1047 2007-05-04 Frédéric Bernon, Jonathan Larmour
1048 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fix bug #19162 "lwip_sento: a possible
1049 to corrupt remote addr/port connection state". Reduce problems "not enought memory" with
1050 netbuf (if we receive lot of datagrams). Improve lwip_sendto (only one exchange between
1051 sockets api and api_msg which run in tcpip_thread context). Add netconn_sento function.
1052 Warning, if you directly access to "fromaddr" & "fromport" field from netbuf struct,
1053 these fields are now renamed "addr" & "port".
1055 2007-04-11 Jonathan Larmour
1056 * sys.h, api_lib.c: Provide new sys_mbox_tryfetch function. Require ports to provide new
1057 sys_arch_mbox_tryfetch function to get a message if one is there, otherwise return
1058 with SYS_MBOX_EMPTY. sys_arch_mbox_tryfetch can be implemented as a function-like macro
1059 by the port in sys_arch.h if desired.
1061 2007-04-06 Frédéric Bernon, Simon Goldschmidt
1062 * opt.h, tcpip.h, tcpip.c, netifapi.h, netifapi.c: New configuration option LWIP_NETIF_API
1063 allow to use thread-safe functions to add/remove netif in list, and to start/stop dhcp
1064 clients, using new functions from netifapi.h. Disable as default (no port change to do).
1066 2007-04-05 Frédéric Bernon
1067 * sockets.c: remplace ENOBUFS errors on alloc_socket by ENFILE to be more BSD compliant.
1069 2007-04-04 Simon Goldschmidt
1070 * arch.h, api_msg.c, dhcp.c, msg_in.c, sockets.c: Introduced #define LWIP_UNUSED_ARG(x)
1071 use this for and architecture-independent form to tell the compiler you intentionally
1072 are not using this variable. Can be overriden in cc.h.
1074 2007-03-28 Frédéric Bernon
1075 * opt.h, netif.h, dhcp.h, dhcp.c: New configuration option LWIP_NETIF_HOSTNAME allow to
1076 define a hostname in netif struct (this is just a pointer, so, you can use a hardcoded
1077 string, point on one of your's ethernetif field, or alloc a string you will free yourself).
1078 It will be used by DHCP to register a client hostname, but can also be use when you call
1081 2007-03-28 Frédéric Bernon
1082 * netif.h, netif.c: A new NETIF_FLAG_ETHARP flag is defined in netif.h, to allow to
1083 initialize a network interface's flag with. It tell this interface is an ethernet
1084 device, and we can use ARP with it to do a "gratuitous ARP" (RFC 3220 "IP Mobility
1085 Support for IPv4" section 4.6) when interface is "up" with netif_set_up().
1087 2007-03-26 Frédéric Bernon, Jonathan Larmour
1088 * opt.h, tcpip.c: New configuration option LWIP_ARP allow to disable ARP init at build
1089 time if you only use PPP or SLIP. The default is enable. Note we don't have to call
1090 etharp_init in your port's initilization sequence if you use tcpip.c, because this call
1091 is done in tcpip_init function.
1093 2007-03-22 Frédéric Bernon
1094 * stats.h, stats.c, msg_in.c: Stats counters can be change to u32_t if necessary with the
1095 new option LWIP_STATS_LARGE. If you need this option, define LWIP_STATS_LARGE to 1 in
1096 your lwipopts.h. More, unused counters are not defined in the stats structs, and not
1097 display by stats_display(). Note that some options (SYS_STATS and RAW_STATS) are defined
1098 but never used. Fix msg_in.c with the correct #if test for a stat display.
1100 2007-03-21 Kieran Mansley
1101 * netif.c, netif.h: Apply patch#4197 with some changes (originator: rireland@hmgsl.com).
1102 Provides callback on netif up/down state change.
1104 2007-03-11 Frédéric Bernon, Mace Gael, Steve Reynolds
1105 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, igmp.h, igmp.c,
1106 ip.c, netif.h, tcpip.c, opt.h:
1107 New configuration option LWIP_IGMP to enable IGMP processing. Based on only one
1108 filter per all network interfaces. Declare a new function in netif to enable to
1109 control the MAC filter (to reduce lwIP traffic processing).
1111 2007-03-11 Frédéric Bernon
1112 * tcp.h, tcp.c, sockets.c, tcp_out.c, tcp_in.c, opt.h: Keepalive values can
1113 be configured at run time with LWIP_TCP_KEEPALIVE, but don't change this
1114 unless you know what you're doing (default are RFC1122 compliant). Note
1115 that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set in seconds.
1117 2007-03-08 Frédéric Bernon
1118 * tcp.h: Keepalive values can be configured at compile time, but don't change
1119 this unless you know what you're doing (default are RFC1122 compliant).
1121 2007-03-08 Frédéric Bernon
1122 * sockets.c, api.h, api_lib.c, tcpip.c, sys.h, sys.c, err.c, opt.h:
1123 Implement LWIP_SO_RCVTIMEO configuration option to enable/disable SO_RCVTIMEO
1124 on UDP sockets/netconn.
1126 2007-03-08 Simon Goldschmidt
1127 * snmp_msg.h, msg_in.c: SNMP UDP ports can be configured at compile time.
1129 2007-03-06 Frédéric Bernon
1130 * api.h, api_lib.c, sockets.h, sockets.c, tcpip.c, sys.h, sys.c, err.h:
1131 Implement SO_RCVTIMEO on UDP sockets/netconn.
1133 2007-02-28 Kieran Mansley (based on patch from Simon Goldschmidt)
1134 * api_lib.c, tcpip.c, memp.c, memp.h: make API msg structs allocated
1135 on the stack and remove the API msg type from memp
1137 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
1138 * sockets.h, sockets.c: Move socket initialization to new
1139 lwip_socket_init() function.
1140 NOTE: this changes the API with ports. Ports will have to be
1141 updated to call lwip_socket_init() now.
1143 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
1144 * api_lib.c: Use memcpy in netbuf_copy_partial.
1149 2008-03-17 Frédéric Bernon, Ed Kerekes
1150 * igmp.h, igmp.c: Fix bug #22613 "IGMP iphdr problem" (could have
1151 some problems to fill the IP header on some targets, use now the
1152 ip.h macros to do it).
1154 2008-03-13 Frédéric Bernon
1155 * sockets.c: Fix bug #22435 "lwip_recvfrom with TCP break;". Using
1156 (lwip_)recvfrom with valid "from" and "fromlen" parameters, on a
1157 TCP connection caused a crash. Note that using (lwip_)recvfrom
1158 like this is a bit slow and that using (lwip)getpeername is the
1159 good lwip way to do it (so, using recv is faster on tcp sockets).
1161 2008-03-12 Frédéric Bernon, Jonathan Larmour
1162 * api_msg.c, contrib/apps/ping.c: Fix bug #22530 "api_msg.c's
1163 recv_raw() does not consume data", and the ping sample (with
1164 LWIP_SOCKET=1, the code did the wrong supposition that lwip_recvfrom
1165 returned the IP payload, without the IP header).
1167 2008-03-04 Jonathan Larmour
1168 * mem.c, stats.c, mem.h: apply patch #6414 to avoid compiler errors
1169 and/or warnings on some systems where mem_size_t and size_t differ.
1170 * pbuf.c, ppp.c: Fix warnings on some systems with mem_malloc.
1172 2008-03-04 Kieran Mansley (contributions by others)
1173 * Numerous small compiler error/warning fixes from contributions to
1174 mailing list after 1.3.0 release candidate made.
1176 2008-01-25 Cui hengbin (integrated by Frédéric Bernon)
1177 * dns.c: Fix bug #22108 "DNS problem" caused by unaligned structures.
1179 2008-01-15 Kieran Mansley
1180 * tcp_out.c: BUG20511. Modify persist timer to start when we are
1181 prevented from sending by a small send window, not just a zero
1184 2008-01-09 Jonathan Larmour
1185 * opt.h, ip.c: Rename IP_OPTIONS define to IP_OPTIONS_ALLOWED to avoid
1186 conflict with Linux system headers.
1188 2008-01-06 Jonathan Larmour
1189 * dhcp.c: fix bug #19927: "DHCP NACK problem" by clearing any existing set IP
1190 address entirely on receiving a DHCPNAK, and restarting discovery.
1192 2007-12-21 Simon Goldschmidt
1193 * sys.h, api_lib.c, api_msg.c, sockets.c: fix bug #21698: "netconn->recv_avail
1194 is not protected" by using new macros for interlocked access to modify/test
1195 netconn->recv_avail.
1197 2007-12-20 Kieran Mansley (based on patch from Oleg Tyshev)
1198 * tcp_in.c: fix bug# 21535 (nrtx not reset correctly in SYN_SENT state)
1200 2007-12-20 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
1201 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: fix bug #20199 (better handling
1202 of silly window avoidance and prevent lwIP from shrinking the window)
1204 2007-12-04 Simon Goldschmidt
1205 * tcp.c, tcp_in.c: fix bug #21699 (segment leak in ooseq processing when last
1206 data packet was lost): add assert that all segment lists are empty in
1207 tcp_pcb_remove before setting pcb to CLOSED state; don't directly set CLOSED
1208 state from LAST_ACK in tcp_process
1210 2007-12-02 Simon Goldschmidt
1211 * sockets.h: fix bug #21654: exclude definition of struct timeval from #ifndef FD_SET
1212 If including <sys/time.h> for system-struct timeval, LWIP_TIMEVAL_PRIVATE now
1213 has to be set to 0 in lwipopts.h
1215 2007-12-02 Simon Goldschmidt
1216 * api_msg.c, api_lib.c: fix bug #21656 (recvmbox problem in netconn API): always
1217 allocate a recvmbox in netconn_new_with_proto_and_callback. For a tcp-listen
1218 netconn, this recvmbox is later freed and a new mbox is allocated for acceptmbox.
1219 This is a fix for thread-safety and allocates all items needed for a netconn
1220 when the netconn is created.
1222 2007-11-30 Simon Goldschmidt
1223 * udp.c: first attempt to fix bug #21655 (DHCP doesn't work reliably with multiple
1224 netifs): if LWIP_DHCP is enabled, UDP packets to DHCP_CLIENT_PORT are passed
1225 to netif->dhcp->pcb only (if that exists) and not to any other pcb for the same
1226 port (only solution to let UDP pcbs 'bind' to a netif instead of an IP address)
1228 2007-11-27 Simon Goldschmidt
1229 * ip.c: fixed bug #21643 (udp_send/raw_send don't fail if netif is down) by
1230 letting ip_route only use netifs that are up.
1232 2007-11-27 Simon Goldschmidt
1233 * err.h, api_lib.c, api_msg.c, sockets.c: Changed error handling: ERR_MEM, ERR_BUF
1234 and ERR_RTE are seen as non-fatal, all other errors are fatal. netconns and
1235 sockets block most operations once they have seen a fatal error.
1237 2007-11-27 Simon Goldschmidt
1238 * udp.h, udp.c, dhcp.c: Implemented new function udp_sendto_if which takes the
1239 netif to send as an argument (to be able to send on netifs that are down).
1241 2007-11-26 Simon Goldschmidt
1242 * tcp_in.c: Fixed bug #21582: pcb->acked accounting can be wrong when ACKs
1245 2007-11-21 Simon Goldschmidt
1246 * tcp.h, tcp_out.c, api_msg.c: Fixed bug #20287: tcp_output_nagle sends too early
1247 Fixed the nagle algorithm; nagle now also works for all raw API applications
1248 and has to be explicitly disabled with 'tcp_pcb->flags |= TF_NODELAY'
1250 2007-11-12 Frédéric Bernon
1251 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fixed bug #20900. Now, most
1252 of the netconn_peer and netconn_addr processing is done inside tcpip_thread
1253 context in do_getaddr.
1255 2007-11-10 Simon Goldschmidt
1256 * etharp.c: Fixed bug: assert fired when MEMP_ARP_QUEUE was empty (which can
1257 happen any time). Now the packet simply isn't enqueued when out of memory.
1259 2007-11-01 Simon Goldschmidt
1260 * tcp.c, tcp_in.c: Fixed bug #21494: The send mss (pcb->mss) is set to 536 (or
1261 TCP_MSS if that is smaller) as long as no MSS option is received from the
1264 2007-11-01 Simon Goldschmidt
1265 * tcp.h, tcp.c, tcp_in.c: Fixed bug #21491: The MSS option sent (with SYN)
1266 is now based on TCP_MSS instead of pcb->mss (on passive open now effectively
1267 sending our configured TCP_MSS instead of the one received).
1269 2007-11-01 Simon Goldschmidt
1270 * tcp_in.c: Fixed bug #21181: On active open, the initial congestion window was
1271 calculated based on the configured TCP_MSS, not on the MSS option received
1274 2007-10-09 Simon Goldschmidt
1275 * udp.c, inet.c, inet.h: Fixed UDPLite: send: Checksum was always generated too
1276 short and also was generated wrong if checksum coverage != tot_len;
1277 receive: checksum was calculated wrong if checksum coverage != tot_len
1279 2007-10-08 Simon Goldschmidt
1280 * mem.c: lfree was not updated in mem_realloc!
1282 2007-10-07 Frédéric Bernon
1283 * sockets.c, api.h, api_lib.c: First step to fix "bug #20900 : Potential
1284 crash error problem with netconn_peer & netconn_addr". VERY IMPORTANT:
1285 this change cause an API breakage for netconn_addr, since a parameter
1286 type change. Any compiler should cause an error without any changes in
1287 yours netconn_peer calls (so, it can't be a "silent change"). It also
1288 reduce a little bit the footprint for socket layer (lwip_getpeername &
1289 lwip_getsockname use now a common lwip_getaddrname function since
1290 netconn_peer & netconn_addr have the same parameters).
1292 2007-09-20 Simon Goldschmidt
1293 * tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state)
1294 by checking tcp_tw_pcbs also
1296 2007-09-19 Simon Goldschmidt
1297 * icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
1299 2007-09-15 Mike Kleshov
1300 * mem.c: Fixed bug #21077 (inaccuracy in calculation of lwip_stat.mem.used)
1302 2007-09-06 Frédéric Bernon
1303 * several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
1304 it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
1305 already include "lwip/arch.h"). Like that, default defines are provided by "lwip/arch.h"
1306 if they are not defined in cc.h, in the same spirit than "lwip/opt.h" for lwipopts.h.
1308 2007-08-30 Frédéric Bernon
1309 * igmp.h, igmp.c: Some changes to remove some redundant code, add some traces,
1310 and fix some coding style.
1312 2007-08-28 Frédéric Bernon
1313 * tcpip.c: Fix TCPIP_MSG_INPKT processing: now, tcpip_input can be used for any
1314 kind of packets. These packets are considered like Ethernet packets (payload
1315 pointing to ethhdr) if the netif got the NETIF_FLAG_ETHARP flag. Else, packets
1316 are considered like IP packets (payload pointing to iphdr).
1318 2007-08-27 Frédéric Bernon
1319 * api.h, api_lib.c, api_msg.c: First fix for "bug #20900 : Potential crash error
1320 problem with netconn_peer & netconn_addr". Introduce NETCONN_LISTEN netconn_state
1321 and remove obsolete ones (NETCONN_RECV & NETCONN_ACCEPT).
1323 2007-08-24 Kieran Mansley
1324 * inet.c Modify (acc >> 16) test to ((acc >> 16) != 0) to help buggy
1325 compiler (Paradigm C++)
1327 2007-08-09 Frédéric Bernon, Bill Florac
1328 * stats.h, stats.c, igmp.h, igmp.c, opt.h: Fix for bug #20503 : IGMP Improvement.
1329 Introduce IGMP_STATS to centralize statistics management.
1331 2007-08-09 Frédéric Bernon, Bill Florac
1332 * udp.c: Fix for bug #20503 : IGMP Improvement. Enable to receive a multicast
1333 packet on a udp pcb binded on an netif's IP address, and not on "any".
1335 2007-08-09 Frédéric Bernon, Bill Florac
1336 * igmp.h, igmp.c, ip.c: Fix minor changes from bug #20503 : IGMP Improvement.
1337 This is mainly on using lookup/lookfor, and some coding styles...
1339 2007-07-26 Frédéric Bernon (and "thedoctor")
1340 * igmp.c: Fix bug #20595 to accept IGMPv3 "Query" messages.
1342 2007-07-25 Simon Goldschmidt
1343 * api_msg.c, tcp.c: Another fix for bug #20021: by not returning an error if
1344 tcp_output fails in tcp_close, the code in do_close_internal gets simpler
1345 (tcp_output is called again later from tcp timers).
1347 2007-07-25 Simon Goldschmidt
1348 * ip_frag.c: Fixed bug #20429: use the new pbuf_copy_partial instead of the old
1349 copy_from_pbuf, which illegally modified the given pbuf.
1351 2007-07-25 Simon Goldschmidt
1352 * tcp_out.c: tcp_enqueue: pcb->snd_queuelen didn't work for chaine PBUF_RAMs:
1353 changed snd_queuelen++ to snd_queuelen += pbuf_clen(p).
1355 2007-07-24 Simon Goldschmidt
1356 * api_msg.c, tcp.c: Fix bug #20480: Check the pcb passed to tcp_listen() for the
1357 correct state (must be CLOSED).
1359 2007-07-13 Thomas Taranowski (commited by Jared Grubb)
1360 * memp.c: Fix bug #20478: memp_malloc returned NULL+MEMP_SIZE on failed
1361 allocation. It now returns NULL.
1363 2007-07-13 Frédéric Bernon
1364 * api_msg.c: Fix bug #20318: api_msg "recv" callbacks don't call pbuf_free in
1367 2007-07-13 Frédéric Bernon
1368 * api_msg.c: Fix bug #20315: possible memory leak problem if tcp_listen failed,
1369 because current code doesn't follow rawapi.txt documentation.
1371 2007-07-13 Kieran Mansley
1372 * src/core/tcp_in.c Apply patch#5741 from Oleg Tyshev to fix bug in
1373 out of sequence processing of received packets
1375 2007-07-03 Simon Goldschmidt
1376 * nearly-all-files: Added assertions where PBUF_RAM pbufs are used and an
1377 assumption is made that this pbuf is in one piece (i.e. not chained). These
1378 assumptions clash with the possibility of converting to fully pool-based
1379 pbuf implementations, where PBUF_RAM pbufs might be chained.
1381 2007-07-03 Simon Goldschmidt
1382 * api.h, api_lib.c, api_msg.c: Final fix for bug #20021 and some other problems
1383 when closing tcp netconns: removed conn->sem, less context switches when
1384 closing, both netconn_close and netconn_delete should safely close tcp
1387 2007-07-02 Simon Goldschmidt
1388 * ipv4/ip.h, ipv6/ip.h, opt.h, netif.h, etharp.h, ipv4/ip.c, netif.c, raw.c,
1389 tcp_out.c, udp.c, etharp.c: Added option LWIP_NETIF_HWADDRHINT (default=off)
1390 to cache ARP table indices with each pcb instead of single-entry cache for
1393 2007-07-02 Simon Goldschmidt
1394 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Added some ASSERTS and casts to prevent
1395 warnings when assigning to smaller types.
1397 2007-06-28 Simon Goldschmidt
1398 * tcp_out.c: Added check to prevent tcp_pcb->snd_queuelen from overflowing.
1400 2007-06-28 Simon Goldschmidt
1401 * tcp.h: Fixed bug #20287: Fixed nagle algorithm (sending was done too early if
1402 a segment contained chained pbufs)
1404 2007-06-28 Frédéric Bernon
1405 * autoip.c: replace most of rand() calls by a macro LWIP_AUTOIP_RAND which compute
1406 a "pseudo-random" value based on netif's MAC and some autoip fields. It's always
1407 possible to define this macro in your own lwipopts.h to always use C library's
1408 rand(). Note that autoip_create_rand_addr doesn't use this macro.
1410 2007-06-28 Frédéric Bernon
1411 * netifapi.h, netifapi.c, tcpip.h, tcpip.c: Update code to handle the option
1412 LWIP_TCPIP_CORE_LOCKING, and do some changes to be coherent with last modifications
1413 in api_lib/api_msg (use pointers and not type with table, etc...)
1415 2007-06-26 Simon Goldschmidt
1416 * udp.h: Fixed bug #20259: struct udp_hdr was lacking the packin defines.
1418 2007-06-25 Simon Goldschmidt
1419 * udp.c: Fixed bug #20253: icmp_dest_unreach was called with a wrong p->payload
1420 for udp packets with no matching pcb.
1422 2007-06-25 Simon Goldschmidt
1423 * udp.c: Fixed bug #20220: UDP PCB search in udp_input(): a non-local match
1424 could get udp input packets if the remote side matched.
1426 2007-06-13 Simon Goldschmidt
1427 * netif.c: Fixed bug #20180 (TCP pcbs listening on IP_ADDR_ANY could get
1428 changed in netif_set_ipaddr if previous netif->ip_addr.addr was 0.
1430 2007-06-13 Simon Goldschmidt
1431 * api_msg.c: pcb_new sets conn->err if protocol is not implemented
1432 -> netconn_new_..() does not allocate a new connection for unsupported
1435 2007-06-13 Frédéric Bernon, Simon Goldschmidt
1436 * api_lib.c: change return expression in netconn_addr and netconn_peer, because
1437 conn->err was reset to ERR_OK without any reasons (and error was lost)...
1439 2007-06-13 Frédéric Bernon, Matthias Weisser
1440 * opt.h, mem.h, mem.c, memp.c, pbuf.c, ip_frag.c, vj.c: Fix bug #20162. Rename
1441 MEM_ALIGN in LWIP_MEM_ALIGN and MEM_ALIGN_SIZE in LWIP_MEM_ALIGN_SIZE to avoid
1442 some macro names collision with some OS macros.
1444 2007-06-11 Simon Goldschmidt
1445 * udp.c: UDP Lite: corrected the use of chksum_len (based on RFC3828: if it's 0,
1446 create checksum over the complete packet. On RX, if it's < 8 (and not 0),
1447 discard the packet. Also removed the duplicate 'udphdr->chksum = 0' for both
1450 2007-06-11 Srinivas Gollakota & Oleg Tyshev
1451 * tcp_out.c: Fix for bug #20075 : "A problem with keep-alive timer and TCP flags"
1452 where TCP flags wasn't initialized in tcp_keepalive.
1454 2007-06-03 Simon Goldschmidt
1455 * udp.c: udp_input(): Input pbuf was not freed if pcb had no recv function
1456 registered, p->payload was modified without modifying p->len if sending
1457 icmp_dest_unreach() (had no negative effect but was definitively wrong).
1459 2007-06-03 Simon Goldschmidt
1460 * icmp.c: Corrected bug #19937: For responding to an icmp echo request, icmp
1461 re-used the input pbuf even if that didn't have enough space to include the
1462 link headers. Now the space is tested and a new pbuf is allocated for the
1463 echo response packet if the echo request pbuf isn't big enough.
1465 2007-06-01 Simon Goldschmidt
1466 * sockets.c: Checked in patch #5914: Moved sockopt processing into tcpip_thread.
1468 2007-05-23 Frédéric Bernon
1469 * api_lib.c, sockets.c: Fixed bug #5958 for netconn_listen (acceptmbox only
1470 allocated by do_listen if success) and netconn_accept errors handling. In
1471 most of api_lib functions, we replace some errors checkings like "if (conn==NULL)"
1472 by ASSERT, except for netconn_delete.
1474 2007-05-23 Frédéric Bernon
1475 * api_lib.c: Fixed bug #5957 "Safe-thread problem inside netconn_recv" to return
1476 an error code if it's impossible to fetch a pbuf on a TCP connection (and not
1477 directly close the recvmbox).
1479 2007-05-22 Simon Goldschmidt
1480 * tcp.c: Fixed bug #1895 (tcp_bind not correct) by introducing a list of
1481 bound but unconnected (and non-listening) tcp_pcbs.
1483 2007-05-22 Frédéric Bernon
1484 * sys.h, sys.c, api_lib.c, tcpip.c: remove sys_mbox_fetch_timeout() (was only
1485 used for LWIP_SO_RCVTIMEO option) and use sys_arch_mbox_fetch() instead of
1486 sys_mbox_fetch() in api files. Now, users SHOULD NOT use internal lwIP features
1487 like "sys_timeout" in their application threads.
1489 2007-05-22 Frédéric Bernon
1490 * api.h, api_lib.c, api_msg.h, api_msg.c: change the struct api_msg_msg to see
1491 which parameters are used by which do_xxx function, and to avoid "misusing"
1492 parameters (patch #5938).
1494 2007-05-22 Simon Goldschmidt
1495 * api_lib.c, api_msg.c, raw.c, api.h, api_msg.h, raw.h: Included patch #5938:
1496 changed raw_pcb.protocol from u16_t to u8_t since for IPv4 and IPv6, proto
1497 is only 8 bits wide. This affects the api, as there, the protocol was
1500 2007-05-18 Simon Goldschmidt
1501 * memp.c: addition to patch #5913: smaller pointer was returned but
1502 memp_memory was the same size -> did not save memory.
1504 2007-05-16 Simon Goldschmidt
1505 * loopif.c, slipif.c: Fix bug #19729: free pbuf if netif->input() returns
1508 2007-05-16 Simon Goldschmidt
1509 * api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same
1510 as the one of the netif used for sending to prevent sending from old
1511 addresses after a netif address gets changed (partly fixes bug #3168).
1513 2007-05-16 Frédéric Bernon
1514 * tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work
1515 with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in
1516 tcpip_init) because we have to be sure that network interfaces are already
1517 added (mac filter is updated only in igmp_init for the moment).
1519 2007-05-16 Simon Goldschmidt
1520 * mem.c, memp.c: Removed semaphores from memp, changed sys_sem_wait calls
1521 into sys_arch_sem_wait calls to prevent timers from running while waiting
1522 for the heap. This fixes bug #19167.
1524 2007-05-13 Simon Goldschmidt
1525 * tcp.h, sockets.h, sockets.c: Fixed bug from patch #5865 by moving the defines
1526 for socket options (lwip_set/-getsockopt) used with level IPPROTO_TCP from
1529 2007-05-07 Simon Goldschmidt
1530 * mem.c: Another attempt to fix bug #17922.
1532 2007-05-04 Simon Goldschmidt
1533 * pbuf.c, pbuf.h, etharp.c: Further update to ARP queueing: Changed pbuf_copy()
1534 implementation so that it can be reused (don't allocate the target
1535 pbuf inside pbuf_copy()).
1537 2007-05-04 Simon Goldschmidt
1538 * memp.c: checked in patch #5913: in memp_malloc() we can return memp as mem
1539 to save a little RAM (next pointer of memp is not used while not in pool).
1542 * sockets.c: Fix ioctl FIONREAD when some data remains from last recv.
1545 2007-04-23 Simon Goldschmidt
1546 * loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results
1547 in NULL reference for incoming TCP packets". Loopif has to be configured
1548 (using LWIP_LOOPIF_MULTITHREADING) to directly call netif->input()
1549 (multithreading environments, e.g. netif->input() = tcpip_input()) or
1550 putting packets on a list that is fed to the stack by calling loopif_poll()
1551 (single-thread / NO_SYS / polling environment where e.g.
1552 netif->input() = ip_input).
1554 2007-04-17 Jonathan Larmour
1555 * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold
1556 the difference between two u16_t's.
1557 * sockets.h: FD_SETSIZE needs to match number of sockets, which is
1558 MEMP_NUM_NETCONN in sockets.c right now.
1560 2007-04-12 Jonathan Larmour
1561 * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580).
1563 2007-04-12 Kieran Mansley
1564 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Modify way the retransmission
1565 timer is reset to fix bug#19434, with help from Oleg Tyshev.
1567 2007-04-11 Simon Goldschmidt
1568 * etharp.c, pbuf.c, pbuf.h: 3rd fix for bug #11400 (arp-queuing): More pbufs than
1569 previously thought need to be copied (everything but PBUF_ROM!). Cleaned up
1570 pbuf.c: removed functions no needed any more (by etharp).
1572 2007-04-11 Kieran Mansley
1573 * inet.c, ip_addr.h, sockets.h, sys.h, tcp.h: Apply patch #5745: Fix
1574 "Constant is long" warnings with 16bit compilers. Contributed by
1575 avatar@mmlab.cse.yzu.edu.tw
1577 2007-04-05 Frédéric Bernon, Jonathan Larmour
1578 * api_msg.c: Fix bug #16830: "err_tcp() posts to connection mailbox when no pend on
1579 the mailbox is active". Now, the post is only done during a connect, and do_send,
1580 do_write and do_join_leave_group don't do anything if a previous error was signaled.
1582 2007-04-03 Frédéric Bernon
1583 * ip.c: Don't set the IP_DF ("Don't fragment") flag in the IP header in IP output
1584 packets. See patch #5834.
1586 2007-03-30 Frédéric Bernon
1587 * api_msg.c: add a "pcb_new" helper function to avoid redundant code, and to add
1588 missing pcb allocations checking (in do_bind, and for each raw_new). Fix style.
1590 2007-03-30 Frédéric Bernon
1591 * most of files: prefix all debug.h define with "LWIP_" to avoid any conflict with
1592 others environment defines (these were too "generic").
1594 2007-03-28 Frédéric Bernon
1595 * api.h, api_lib.c, sockets.c: netbuf_ref doesn't check its internal pbuf_alloc call
1596 result and can cause a crash. lwip_send now check netbuf_ref result.
1598 2007-03-28 Simon Goldschmidt
1599 * sockets.c Remove "#include <errno.h>" from sockets.c to avoid multiple
1600 definition of macros (in errno.h and lwip/arch.h) if LWIP_PROVIDE_ERRNO is
1601 defined. This is the way it should have been already (looking at
1604 2007-03-28 Kieran Mansley
1605 * opt.h Change default PBUF_POOL_BUFSIZE (again) to accomodate default MSS +
1606 IP and TCP headers *and* physical link headers
1608 2007-03-26 Frédéric Bernon (based on patch from Dmitry Potapov)
1609 * api_lib.c: patch for netconn_write(), fixes a possible race condition which cause
1610 to send some garbage. It is not a definitive solution, but the patch does solve
1611 the problem for most cases.
1613 2007-03-22 Frédéric Bernon
1614 * api_msg.h, api_msg.c: Remove obsolete API_MSG_ACCEPT and do_accept (never used).
1616 2007-03-22 Frédéric Bernon
1617 * api_lib.c: somes resources couldn't be freed if there was errors during
1618 netconn_new_with_proto_and_callback.
1620 2007-03-22 Frédéric Bernon
1621 * ethernetif.c: update netif->input calls to check return value. In older ports,
1622 it's a good idea to upgrade them, even if before, there could be another problem
1623 (access to an uninitialized mailbox).
1625 2007-03-21 Simon Goldschmidt
1626 * sockets.c: fixed bug #5067 (essentialy a signed/unsigned warning fixed
1627 by casting to unsigned).
1629 2007-03-21 Frédéric Bernon
1630 * api_lib.c, api_msg.c, tcpip.c: integrate sys_mbox_fetch(conn->mbox, NULL) calls from
1631 api_lib.c to tcpip.c's tcpip_apimsg(). Now, use a local variable and not a
1632 dynamic one from memp to send tcpip_msg to tcpip_thread in a synchrone call.
1633 Free tcpip_msg from tcpip_apimsg is not done in tcpip_thread. This give a
1634 faster and more reliable communication between api_lib and tcpip.
1636 2007-03-21 Frédéric Bernon
1637 * opt.h: Add LWIP_NETIF_CALLBACK (to avoid compiler warning) and set it to 0.
1639 2007-03-21 Frédéric Bernon
1640 * api_msg.c, igmp.c, igmp.h: Fix C++ style comments
1642 2007-03-21 Kieran Mansley
1643 * opt.h Change default PBUF_POOL_BUFSIZE to accomodate default MSS +
1646 2007-03-21 Kieran Mansley
1647 * Fix all uses of pbuf_header to check the return value. In some
1648 cases just assert if it fails as I'm not sure how to fix them, but
1649 this is no worse than before when they would carry on regardless
1652 2007-03-21 Kieran Mansley
1653 * sockets.c, igmp.c, igmp.h, memp.h: Fix C++ style comments and
1654 comment out missing header include in icmp.c
1656 2007-03-20 Frédéric Bernon
1657 * memp.h, stats.c: Fix stats_display function where memp_names table wasn't
1658 synchronized with memp.h.
1660 2007-03-20 Frédéric Bernon
1661 * tcpip.c: Initialize tcpip's mbox, and verify if initialized in tcpip_input,
1662 tcpip_ethinput, tcpip_callback, tcpip_apimsg, to fix a init problem with
1663 network interfaces. Also fix a compiler warning.
1665 2007-03-20 Kieran Mansley
1666 * udp.c: Only try and use pbuf_header() to make space for headers if
1667 not a ROM or REF pbuf.
1669 2007-03-19 Frédéric Bernon
1670 * api_msg.h, api_msg.c, tcpip.h, tcpip.c: Add return types to tcpip_apimsg()
1673 2007-03-19 Frédéric Bernon
1674 * Remove unimplemented "memp_realloc" function from memp.h.
1676 2007-03-11 Simon Goldschmidt
1677 * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused
1680 2007-03-11 Simon Goldschmidt (based on patch from Dmitry Potapov)
1681 * api_lib.c, sockets.c, api.h, api_msg.h, sockets.h: Fixed bug #19251
1682 (missing `const' qualifier in socket functions), to get more compatible to
1683 standard POSIX sockets.
1685 2007-03-11 Frédéric Bernon (based on patch from Dmitry Potapov)
1686 * sockets.c: Add asserts inside bind, connect and sendto to check input
1687 parameters. Remove excessive set_errno() calls after get_socket(), because
1688 errno is set inside of get_socket(). Move last sock_set_errno() inside
1691 2007-03-09 Simon Goldschmidt
1692 * memp.c: Fixed bug #11400: New etharp queueing introduced bug: memp_memory
1693 was allocated too small.
1695 2007-03-06 Simon Goldschmidt
1696 * tcpip.c: Initialize dhcp timers in tcpip_thread (if LWIP_DHCP) to protect
1697 the stack from concurrent access.
1699 2007-03-06 Frédéric Bernon, Dmitry Potapov
1700 * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy
1701 call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().
1703 2007-03-06 Simon Goldschmidt
1704 * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files
1705 if IP_FRAG == 0 and IP_REASSEMBLY == 0
1707 2007-03-06 Frédéric Bernon, Simon Goldschmidt
1708 * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration
1709 option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput.
1710 Allow to do ARP processing for incoming packets inside tcpip_thread
1711 (protecting ARP layer against concurrent access). You can also disable
1712 old code using tcp_input with new define ETHARP_TCPIP_INPUT set to 0.
1713 Older ports have to use tcpip_ethinput.
1715 2007-03-06 Simon Goldschmidt (based on patch from Dmitry Potapov)
1716 * err.h, err.c: fixed compiler warning "initialization dircards qualifiers
1717 from pointer target type"
1719 2007-03-05 Frédéric Bernon
1720 * opt.h, sockets.h: add new configuration options (LWIP_POSIX_SOCKETS_IO_NAMES,
1721 ETHARP_TRUST_IP_MAC, review SO_REUSE)
1723 2007-03-04 Frédéric Bernon
1724 * api_msg.c: Remove some compiler warnings : parameter "pcb" was never
1727 2007-03-04 Frédéric Bernon
1728 * api_lib.c: Fix "[patch #5764] api_lib.c cleanup: after patch #5687" (from
1730 The api_msg struct stay on the stack (not moved to netconn struct).
1732 2007-03-04 Simon Goldschmidt (based on patch from Dmitry Potapov)
1733 * pbuf.c: Fix BUG#19168 - pbuf_free can cause deadlock (if
1734 SYS_LIGHTWEIGHT_PROT=1 & freeing PBUF_RAM when mem_sem is not available)
1735 Also fixed cast warning in pbuf_alloc()
1737 2007-03-04 Simon Goldschmidt
1738 * etharp.c, etharp.h, memp.c, memp.h, opt.h: Fix BUG#11400 - don't corrupt
1739 existing pbuf chain when enqueuing multiple pbufs to a pending ARP request
1741 2007-03-03 Frédéric Bernon
1742 * udp.c: remove obsolete line "static struct udp_pcb *pcb_cache = NULL;"
1743 It is static, and never used in udp.c except udp_init().
1745 2007-03-02 Simon Goldschmidt
1746 * tcpip.c: Moved call to ip_init(), udp_init() and tcp_init() from
1747 tcpip_thread() to tcpip_init(). This way, raw API connections can be
1748 initialized before tcpip_thread is running (e.g. before OS is started)
1750 2007-03-02 Frédéric Bernon
1751 * rawapi.txt: Fix documentation mismatch with etharp.h about etharp_tmr's call
1754 2007-02-28 Kieran Mansley
1755 * pbuf.c: Fix BUG#17645 - ensure pbuf payload pointer is not moved
1756 outside the region of the pbuf by pbuf_header()
1758 2007-02-28 Kieran Mansley
1759 * sockets.c: Fix BUG#19161 - ensure milliseconds timeout is non-zero
1760 when supplied timeout is also non-zero
1764 2006-12-05 Leon Woestenberg
1765 * CHANGELOG: Mention STABLE-1.2.0 release.
1769 2006-12-01 Christiaan Simons
1770 * mem.h, opt.h: Added MEM_LIBC_MALLOC option.
1771 Note this is a workaround. Currently I have no other options left.
1773 2006-10-26 Christiaan Simons (accepted patch by Jonathan Larmour)
1774 * ipv4/ip_frag.c: rename MAX_MTU to IP_FRAG_MAX_MTU and move define
1775 to include/lwip/opt.h.
1776 * ipv4/lwip/ip_frag.h: Remove unused IP_REASS_INTERVAL.
1777 Move IP_REASS_MAXAGE and IP_REASS_BUFSIZE to include/lwip/opt.h.
1778 * opt.h: Add above new options.
1780 2006-08-18 Christiaan Simons
1781 * tcp_{in,out}.c: added SNMP counters.
1782 * ipv4/ip.c: added SNMP counters.
1783 * ipv4/ip_frag.c: added SNMP counters.
1785 2006-08-08 Christiaan Simons
1786 * etharp.{c,h}: added etharp_find_addr() to read
1787 (stable) ethernet/IP address pair from ARP table
1789 2006-07-14 Christiaan Simons
1790 * mib_structs.c: added
1791 * include/lwip/snmp_structs.h: added
1792 * netif.{c,h}, netif/ethernetif.c: added SNMP statistics to netif struct
1794 2006-07-06 Christiaan Simons
1795 * snmp/asn1_{enc,dec}.c added
1797 * snmp/msg_{in,out}.c added
1798 * include/lwip/snmp_asn1.h added
1799 * include/lwip/snmp_msg.h added
1800 * doc/snmp_agent.txt added
1802 2006-03-29 Christiaan Simons
1803 * inet.c, inet.h: Added platform byteswap support.
1804 Added LWIP_PLATFORM_BYTESWAP define (defaults to 0) and
1805 optional LWIP_PLATFORM_HTONS(), LWIP_PLATFORM_HTONL() macros.
1809 2006-11-30 Christiaan Simons
1810 * dhcp.c: Fixed false triggers of request_timeout.
1812 2006-11-28 Christiaan Simons
1813 * netif.c: In netif_add() fixed missing clear of ip_addr, netmask, gw and flags.
1815 2006-10-11 Christiaan Simons
1816 * api_lib.c etharp.c, ip.c, memp.c, stats.c, sys.{c,h} tcp.h:
1817 Partially accepted patch #5449 for ANSI C compatibility / build fixes.
1818 * ipv4/lwip/ip.h ipv6/lwip/ip.h: Corrected UDP-Lite protocol
1819 identifier from 170 to 136 (bug #17574).
1821 2006-10-10 Christiaan Simons
1822 * api_msg.c: Fixed Nagle algorithm as reported by Bob Grice.
1824 2006-08-17 Christiaan Simons
1825 * udp.c: Fixed bug #17200, added check for broadcast
1826 destinations for PCBs bound to a unicast address.
1828 2006-08-07 Christiaan Simons
1829 * api_msg.c: Flushing TCP output in do_close() (bug #15926).
1831 2006-06-27 Christiaan Simons
1832 * api_msg.c: Applied patch for cold case (bug #11135).
1833 In accept_function() ensure newconn->callback is always initialized.
1835 2006-06-15 Christiaan Simons
1836 * mem.h: added MEM_SIZE_F alias to fix an ancient cold case (bug #1748),
1837 facilitate printing of mem_size_t and u16_t statistics.
1839 2006-06-14 Christiaan Simons
1840 * api_msg.c: Applied patch #5146 to handle allocation failures
1841 in accept() by Kevin Lawson.
1843 2006-05-26 Christiaan Simons
1844 * api_lib.c: Removed conn->sem creation and destruction
1845 from netconn_write() and added sys_sem_new to netconn_new_*.
1849 2006-03-03 Christiaan Simons
1850 * ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap
1851 access and added pbuf_alloc() return value checks.
1853 2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net>
1854 * tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is
1855 now handled by the checksum routine properly.
1857 2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1858 * pbuf.c: Fix alignment; pbuf_init() would not work unless
1859 pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.)
1861 2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net>
1862 * tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch
1863 submitted by Mitrani Hiroshi.
1865 2005-12-15 Christiaan Simons
1866 * inet.c: Disabled the added summing routine to preserve code space.
1868 2005-12-14 Leon Woestenberg <leon.woestenberg@gmx.net>
1869 * tcp_in.c: Duplicate FIN ACK race condition fix by Kelvin Lawson.
1870 Added Curt McDowell's optimized checksumming routine for future
1871 inclusion. Need to create test case for unaliged, aligned, odd,
1872 even length combination of cases on various endianess machines.
1874 2005-12-09 Christiaan Simons
1875 * inet.c: Rewrote standard checksum routine in proper portable C.
1877 2005-11-25 Christiaan Simons
1878 * udp.c tcp.c: Removed SO_REUSE hack. Should reside in socket code only.
1879 * *.c: introduced cc.h LWIP_DEBUG formatters matching the u16_t, s16_t,
1880 u32_t, s32_t typedefs. This solves most debug word-length assumes.
1882 2005-07-17 Leon Woestenberg <leon.woestenberg@gmx.net>
1883 * inet.c: Fixed unaligned 16-bit access in the standard checksum
1884 routine by Peter Jolasson.
1885 * slipif.c: Fixed implementation assumption of single-pbuf datagrams.
1887 2005-02-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1888 * tcp_out.c: Fixed uninitialized 'queue' referenced in memerr branch.
1889 * tcp_{out|in}.c: Applied patch fixing unaligned access.
1891 2005-01-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1892 * pbuf.c: Fixed missing semicolon after LWIP_DEBUG statement.
1894 2005-01-03 Leon Woestenberg <leon.woestenberg@gmx.net>
1895 * udp.c: UDP pcb->recv() was called even when it was NULL.
1899 2004-12-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1900 * etharp.*: Disabled multiple packets on the ARP queue.
1901 This clashes with TCP queueing.
1903 2004-11-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1904 * etharp.*: Fixed race condition from ARP request to ARP timeout.
1905 Halved the ARP period, doubled the period counts.
1906 ETHARP_MAX_PENDING now should be at least 2. This prevents
1907 the counter from reaching 0 right away (which would allow
1908 too little time for ARP responses to be received).
1910 2004-11-25 Leon Woestenberg <leon.woestenberg@gmx.net>
1911 * dhcp.c: Decline messages were not multicast but unicast.
1912 * etharp.c: ETHARP_CREATE is renamed to ETHARP_TRY_HARD.
1913 Do not try hard to insert arbitrary packet's source address,
1914 etharp_ip_input() now calls etharp_update() without ETHARP_TRY_HARD.
1915 etharp_query() now always DOES call ETHARP_TRY_HARD so that users
1916 querying an address will see it appear in the cache (DHCP could
1917 suffer from this when a server invalidly gave an in-use address.)
1918 * ipv4/ip_addr.h: Renamed ip_addr_maskcmp() to _netcmp() as we are
1919 comparing network addresses (identifiers), not the network masks
1921 * ipv4/ip_addr.c: ip_addr_isbroadcast() now checks that the given
1922 IP address actually belongs to the network of the given interface.
1924 2004-11-24 Kieran Mansley <kjm25@cam.ac.uk>
1925 * tcp.c: Increment pcb->snd_buf when ACK is received in SYN_SENT state.
1929 2004-10-16 Kieran Mansley <kjm25@cam.ac.uk>
1930 * tcp.c: Add code to tcp_recved() to send an ACK (window update) immediately,
1931 even if one is already pending, if the rcv_wnd is above a threshold
1932 (currently TCP_WND/2). This avoids waiting for a timer to expire to send a
1933 delayed ACK in order to open the window if the stack is only receiving data.
1935 2004-09-12 Kieran Mansley <kjm25@cam.ac.uk>
1936 * tcp*.*: Retransmit time-out handling improvement by Sam Jansen.
1938 2004-08-20 Tony Mountifield <tony@softins.co.uk>
1939 * etharp.c: Make sure the first pbuf queued on an ARP entry
1940 is properly ref counted.
1942 2004-07-27 Tony Mountifield <tony@softins.co.uk>
1943 * debug.h: Added (int) cast in LWIP_DEBUGF() to avoid compiler
1944 warnings about comparison.
1945 * pbuf.c: Stopped compiler complaining of empty if statement
1946 when LWIP_DEBUGF() empty. Closed an unclosed comment.
1947 * tcp.c: Stopped compiler complaining of empty if statement
1948 when LWIP_DEBUGF() empty.
1949 * ip.h Corrected IPH_TOS() macro: returns a byte, so doesn't need htons().
1950 * inet.c: Added a couple of casts to quiet the compiler.
1951 No need to test isascii(c) before isdigit(c) or isxdigit(c).
1953 2004-07-22 Tony Mountifield <tony@softins.co.uk>
1954 * inet.c: Made data types consistent in inet_ntoa().
1955 Added casts for return values of checksum routines, to pacify compiler.
1956 * ip_frag.c, tcp_out.c, sockets.c, pbuf.c
1957 Small corrections to some debugging statements, to pacify compiler.
1959 2004-07-21 Tony Mountifield <tony@softins.co.uk>
1960 * etharp.c: Removed spurious semicolon and added missing end-of-comment.
1961 * ethernetif.c Updated low_level_output() to match prototype for
1962 netif->linkoutput and changed low_level_input() similarly for consistency.
1963 * api_msg.c: Changed recv_raw() from int to u8_t, to match prototype
1964 of raw_recv() in raw.h and so avoid compiler error.
1965 * sockets.c: Added trivial (int) cast to keep compiler happier.
1966 * ip.c, netif.c Changed debug statements to use the tidier ip4_addrN() macros.
1972 2004-07-05 Leon Woestenberg <leon.woestenberg@gmx.net>
1973 * sockets.*: Restructured LWIP_PRIVATE_TIMEVAL. Make sure
1974 your cc.h file defines this either 1 or 0. If non-defined,
1976 * .c: Added <string.h> and <errno.h> includes where used.
1977 * etharp.c: Made some array indices unsigned.
1979 2004-06-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1980 * netif.*: Added netif_set_up()/down().
1981 * dhcp.c: Changes to restart program flow.
1983 2004-05-07 Leon Woestenberg <leon.woestenberg@gmx.net>
1984 * etharp.c: In find_entry(), instead of a list traversal per candidate, do a
1985 single-pass lookup for different candidates. Should exploit locality.
1987 2004-04-29 Leon Woestenberg <leon.woestenberg@gmx.net>
1988 * tcp*.c: Cleaned up source comment documentation for Doxygen processing.
1989 * opt.h: ETHARP_ALWAYS_INSERT option removed to comply with ARP RFC.
1990 * etharp.c: update_arp_entry() only adds new ARP entries when adviced to by
1991 the caller. This deprecates the ETHARP_ALWAYS_INSERT overrule option.
1995 2004-04-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1996 * etharp.c: Applied patch of bug #8708 by Toni Mountifield with a solution
1997 suggested by Timmy Brolin. Fix for 32-bit processors that cannot access
1998 non-aligned 32-bit words, such as soms 32-bit TCP/IP header fields. Fix
1999 is to prefix the 14-bit Ethernet headers with two padding bytes.
2001 2004-04-23 Leon Woestenberg <leon.woestenberg@gmx.net>
2002 * ip_addr.c: Fix in the ip_addr_isbroadcast() check.
2003 * etharp.c: Fixed the case where the packet that initiates the ARP request
2004 is not queued, and gets lost. Fixed the case where the packets destination
2005 address is already known; we now always queue the packet and perform an ARP
2012 * Fixed TCP bug for SYN_SENT to ESTABLISHED state transition.
2013 * Fixed TCP bug in dequeueing of FIN from out of order segment queue.
2014 * Fixed two possible NULL references in rare cases.
2020 * Fixed DHCP which did not include the IP address in DECLINE messages.
2024 * etharp.c has been hauled over a bit.
2030 * Fixed TCP bug induced by bad window resizing with unidirectional TCP traffic.
2031 * Packets sent from ARP queue had invalid source hardware address.
2035 * Pass-by ARP requests do now update the cache.
2039 * No longer dependent on ctype.h.
2040 * New socket options.
2041 * Raw IP pcb support.
2047 * Some debug formatters and casts fixed.
2048 * Numereous fixes in PPP.
2052 * DEBUGF now is LWIP_DEBUGF
2053 * pbuf_dechain() has been re-enabled.
2054 * Mentioned the changed use of CVS branches in README.
2060 * Fixed pool pbuf memory leak in pbuf_alloc().
2061 Occured if not enough PBUF_POOL pbufs for a packet pbuf chain.
2062 Reported by Savin Zlobec.
2064 * PBUF_POOL chains had their tot_len field not set for non-first
2065 pbufs. Fixed in pbuf_alloc().
2069 * Added PPP stack contributed by Marc Boucher
2073 * Now drops short packets for ICMP/UDP/TCP protocols. More robust.
2075 * ARP queueuing now queues the latest packet instead of the first.
2076 This is the RFC recommended behaviour, but can be overridden in
2083 * TCP has been fixed to deal with the new use of the pbuf->ref
2086 * DHCP dhcp_inform() crash bug fixed.
2090 * Removed pbuf_pool_free_cache and pbuf_pool_alloc_cache. Also removed
2091 pbuf_refresh(). This has sped up pbuf pool operations considerably.
2092 Implemented by David Haas.
2098 * The packet buffer implementation has been enhanced to support
2099 zero-copy and copy-on-demand for packet buffers which have their
2100 payloads in application-managed memory.
2101 Implemented by David Haas.
2103 Use PBUF_REF to make a pbuf refer to RAM. lwIP will use zero-copy
2104 if an outgoing packet can be directly sent on the link, or perform
2105 a copy-on-demand when necessary.
2107 The application can safely assume the packet is sent, and the RAM
2108 is available to the application directly after calling udp_send()
2109 or similar function.
2113 * ARP_QUEUEING should now correctly work for all cases, including
2115 Implemented by Leon Woestenberg.
2119 * IP_ADDR_ANY is no longer a NULL pointer. Instead, it is a pointer
2120 to a '0.0.0.0' IP address.
2122 * The packet buffer implementation is changed. The pbuf->ref counter
2123 meaning has changed, and several pbuf functions have been
2124 adapted accordingly.
2126 * netif drivers have to be changed to set the hardware address length field
2127 that must be initialized correctly by the driver (hint: 6 for Ethernet MAC).
2128 See the contrib/ports/c16x cs8900 driver as a driver example.
2130 * netif's have a dhcp field that must be initialized to NULL by the driver.
2131 See the contrib/ports/c16x cs8900 driver as a driver example.
2133 (0.5.x) This file has been unmaintained up to 0.6.1. All changes are
2134 logged in CVS but have not been explained here.
2136 (0.5.3) Changes since version 0.5.2
2140 * memp_malloc(MEMP_API_MSG) could fail with multiple application
2141 threads because it wasn't protected by semaphores.
2145 * struct ip_addr now packed.
2147 * The name of the time variable in arp.c has been changed to ctime
2148 to avoid conflicts with the time() function.
2150 (0.5.2) Changes since version 0.5.1
2154 * A new TCP function, tcp_tmr(), now handles both TCP timers.
2158 * A bug in tcp_parseopt() could cause the stack to hang because of a
2159 malformed TCP option.
2161 * The address of new connections in the accept() function in the BSD
2162 socket library was not handled correctly.
2164 * pbuf_dechain() did not update the ->tot_len field of the tail.
2166 * Aborted TCP connections were not handled correctly in all
2171 * All protocol header structs are now packed.
2173 * The ->len field in the tcp_seg structure now counts the actual
2174 amount of data, and does not add one for SYN and FIN segments.
2176 (0.5.1) Changes since version 0.5.0
2180 * Possible to run as a user process under Linux.
2182 * Preliminary support for cross platform packed structs.
2184 * ARP timer now implemented.
2188 * TCP output queue length was badly initialized when opening
2191 * TCP delayed ACKs were not sent correctly.
2193 * Explicit initialization of BSS segment variables.
2195 * read() in BSD socket library could drop data.
2197 * Problems with memory alignment.
2199 * Situations when all TCP buffers were used could lead to
2202 * TCP MSS option wasn't parsed correctly.
2204 * Problems with UDP checksum calculation.
2206 * IP multicast address tests had endianess problems.
2208 * ARP requests had wrong destination hardware address.
2212 * struct eth_addr changed from u16_t[3] array to u8_t[6].
2214 * A ->linkoutput() member was added to struct netif.
2216 * TCP and UDP ->dest_* struct members where changed to ->remote_*.
2218 * ntoh* macros are now null definitions for big endian CPUs.
2220 (0.5.0) Changes since version 0.4.2
2224 * Redesigned operating system emulation layer to make porting easier.
2226 * Better control over TCP output buffers.
2228 * Documenation added.
2232 * Locking issues in buffer management.
2234 * Bugfixes in the sequential API.
2236 * IP forwarding could cause memory leakage. This has been fixed.
2240 * Directory structure somewhat changed; the core/ tree has been
2243 (0.4.2) Changes since version 0.4.1
2247 * Experimental ARP implementation added.
2249 * Skeleton Ethernet driver added.
2251 * Experimental BSD socket API library added.
2255 * In very intense situations, memory leakage could occur. This has
2260 * Variables named "data" and "code" have been renamed in order to
2261 avoid name conflicts in certain compilers.
2263 * Variable++ have in appliciable cases been translated to ++variable
2264 since some compilers generate better code in the latter case.
2266 (0.4.1) Changes since version 0.4
2270 * TCP: Connection attempts time out earlier than data
2271 transmissions. Nagle algorithm implemented. Push flag set on the
2272 last segment in a burst.
2274 * UDP: experimental support for UDP-Lite extensions.
2278 * TCP: out of order segments were in some cases handled incorrectly,
2279 and this has now been fixed. Delayed acknowledgements was broken
2280 in 0.4, has now been fixed. Binding to an address that is in use
2281 now results in an error. Reset connections sometimes hung an
2282 application; this has been fixed.
2284 * Checksum calculation sometimes failed for chained pbufs with odd
2285 lengths. This has been fixed.
2287 * API: a lot of bug fixes in the API. The UDP API has been improved
2288 and tested. Error reporting and handling has been
2289 improved. Logical flaws and race conditions for incoming TCP
2290 connections has been found and removed.
2292 * Memory manager: alignment issues. Reallocating memory sometimes
2293 failed, this has been fixed.
2295 * Generic library: bcopy was flawed and has been fixed.
2299 * API: all datatypes has been changed from generic ones such as
2300 ints, to specified ones such as u16_t. Functions that return
2301 errors now have the correct type (err_t).
2303 * General: A lot of code cleaned up and debugging code removed. Many
2304 portability issues have been fixed.
2306 * The license was changed; the advertising clause was removed.
2310 * Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri
2311 Kosunen, Mikael Caleres, and Frits Wilmink for reporting and
2314 (0.4) Changes since version 0.3.1
2316 * Memory management has been radically changed; instead of
2317 allocating memory from a shared heap, memory for objects that are
2318 rapidly allocated and deallocated is now kept in pools. Allocation
2319 and deallocation from those memory pools is very fast. The shared
2320 heap is still present but is used less frequently.
2322 * The memory, memory pool, and packet buffer subsystems now support
2323 4-, 2-, or 1-byte alignment.
2325 * "Out of memory" situations are handled in a more robust way.
2327 * Stack usage has been reduced.
2329 * Easier configuration of lwIP parameters such as memory usage,
2330 TTLs, statistics gathering, etc. All configuration parameters are
2331 now kept in a single header file "lwipopts.h".
2333 * The directory structure has been changed slightly so that all
2334 architecture specific files are kept under the src/arch
2337 * Error propagation has been improved, both in the protocol modules
2340 * The code for the RTXC architecture has been implemented, tested
2343 * Bugs have been found and corrected in the TCP, UDP, IP, API, and
2344 the Internet checksum modules.
2346 * Bugs related to porting between a 32-bit and a 16-bit architecture
2347 have been found and corrected.
2349 * The license has been changed slightly to conform more with the
2350 original BSD license, including the advertisement clause.
2352 (0.3.1) Changes since version 0.3
2354 * Fix of a fatal bug in the buffer management. Pbufs with allocated
2355 RAM never returned the RAM when the pbuf was deallocated.
2357 * TCP congestion control, window updates and retransmissions did not
2358 work correctly. This has now been fixed.
2360 * Bugfixes in the API.
2362 (0.3) Changes since version 0.2
2364 * New and improved directory structure. All include files are now
2365 kept in a dedicated include/ directory.
2367 * The API now has proper error handling. A new function,
2368 netconn_err(), now returns an error code for the connection in
2371 * Improvements in the memory management subsystem. The system now
2372 keeps a pointer to the lowest free memory block. A new function,
2373 mem_malloc2() tries to allocate memory once, and if it fails tries
2374 to free some memory and retry the allocation.
2376 * Much testing has been done with limited memory
2377 configurations. lwIP now does a better job when overloaded.
2379 * Some bugfixes and improvements to the buffer (pbuf) subsystem.
2381 * Many bugfixes in the TCP code:
2383 - Fixed a bug in tcp_close().
2385 - The TCP receive window was incorrectly closed when out of
2386 sequence segments was received. This has been fixed.
2388 - Connections are now timed-out of the FIN-WAIT-2 state.
2390 - The initial congestion window could in some cases be too
2391 large. This has been fixed.
2393 - The retransmission queue could in some cases be screwed up. This
2396 - TCP RST flag now handled correctly.
2398 - Out of sequence data was in some cases never delivered to the
2399 application. This has been fixed.
2401 - Retransmitted segments now contain the correct acknowledgment
2402 number and advertised window.
2404 - TCP retransmission timeout backoffs are not correctly computed
2405 (ala BSD). After a number of retransmissions, TCP now gives up
2408 * TCP connections now are kept on three lists, one for active
2409 connections, one for listening connections, and one for
2410 connections that are in TIME-WAIT. This greatly speeds up the fast
2411 timeout processing for sending delayed ACKs.
2413 * TCP now provides proper feedback to the application when a
2414 connection has been successfully set up.
2416 * More comments have been added to the code. The code has also been
2417 somewhat cleaned up.
2419 (0.2) Initial public release.