5 * [Enter new changes just after this line - do not remove this line]
9 2011-08-26: Simon Goldschmidt
10 * etharp.c: ETHARP_SUPPORT_VLAN: add support for an external VLAN filter
11 function instead of only checking for one VLAN (define ETHARP_VLAN_CHECK_FN)
13 2011-07-21: Simon Goldschmidt (patch by hanhui)
14 * ip4.c, etharp.c, pbuf.h: bug #33634 ip_forward() have a faulty behaviour:
15 Added pbuf flags to mark incoming packets as link-layer broadcast/multicast.
16 Also added code to allow ip_forward() to forward non-broadcast packets to
17 the input netif (set IP_FORWARD_ALLOW_TX_ON_RX_NETIF==1).
19 2011-07-21: Simon Goldschmidt
20 * sockets.c, opt.h: (bug #30185): added LWIP_FIONREAD_LINUXMODE that makes
21 ioctl/FIONREAD return the size of the next pending datagram.
23 2011-06-26: Simon Goldschmidt (patch by Cameron Gutman)
24 * tcp.c, tcp_out.c: bug #33604: added some more asserts to check that
27 2011-05-25: Simon Goldschmidt
28 * again nearly the whole stack, renamed ip.c to ip4.c, ip_addr.c to ip4_addr.c,
29 combined ipv4/ipv6 inet_chksum.c, added ip.h, ip_addr.h: Combined IPv4
30 and IPv6 code where possible, added defines to access IPv4/IPv6 in non-IP
31 code so that the code is more readable.
33 2011-05-17: Patch by Ivan Delamer (only checked in by Simon Goldschmidt)
34 * nearly the whole stack: Finally, we got decent IPv6 support, big thanks to
35 Ivan! (this is work in progress: we're just post release anyway :-)
37 2011-05-14: Simon Goldschmidt (patch by Stéphane Lesage)
38 * tcpip.c/.h: patch #7449 allow tcpip callback from interrupt with static
44 2011-08-24: Simon Goldschmidt
45 * netif.c: fixed bug #34121 netif_add/netif_set_ipaddr fail on NULL ipaddr
47 2011-08-22: Simon Goldschmidt
48 * tcp_out.c: fixed bug #33962 TF_FIN not always set after FIN is sent. (This
49 merely prevents nagle from not transmitting fast after closing.)
51 2011-07-22: Simon Goldschmidt
52 * api_lib.c, api_msg.c, sockets.c, api.h: fixed bug #31084 (socket API returns
53 always EMSGSIZE on non-blocking sockets if data size > send buffers) -> now
54 lwip_send() sends as much as possible for non-blocking sockets
56 2011-07-22: Simon Goldschmidt
57 * pbuf.c/.h, timers.c: freeing ooseq pbufs when the pbuf pool is empty implemented
58 for NO_SYS==1: when not using sys_check_timeouts(), call PBUF_CHECK_FREE_OOSEQ()
59 at regular intervals from main level.
61 2011-07-21: Simon Goldschmidt
62 * etharp.c: fixed bug #33551 (ARP entries may time out although in use) by
63 sending an ARP request when an ARP entry is used in the last minute before
66 2011-07-04: Simon Goldschmidt
67 * sys_arch.txt: Fixed documentation after changing sys arch prototypes for 1.4.0.
69 2011-06-26: Simon Goldschmidt
70 * tcp.c: fixed bug #31723 (tcp_kill_prio() kills pcbs with the same prio) by
71 updating its documentation only.
73 2011-06-26: Simon Goldschmidt
74 * mem.c: fixed bug #33545: With MEM_USE_POOLS==1, mem_malloc can return an
77 2011-06-26: Simon Goldschmidt
78 * mem.c: fixed bug #33544 "warning in mem.c in lwip 1.4.0 with NO_SYS=1"
86 2011-03-27: Simon Goldschmidt
87 * tcp_impl.h, tcp_in.c, tcp_out.c: Removed 'dataptr' from 'struct tcp_seg' and
88 calculate it in tcp_zero_window_probe (the only place where it was used).
90 2010-11-21: Simon Goldschmidt
91 * dhcp.c/.h: Added a function to deallocate the struct dhcp from a netif
94 2010-07-12: Simon Goldschmidt (patch by Stephane Lesage)
95 * ip.c, udp.c/.h, pbuf.h, sockets.c: task #10495: Added support for
96 IP_MULTICAST_LOOP at socket- and raw-API level.
98 2010-06-16: Simon Goldschmidt
99 * ip.c: Added an optional define (LWIP_IP_ACCEPT_UDP_PORT) that can allow
100 link-layer-addressed UDP traffic to be received while a netif is down (just
101 like DHCP during configuration)
103 2010-05-22: Simon Goldschmidt
104 * many many files: bug #27352: removed packing from ip_addr_t, the packed
105 version is now only used in protocol headers. Added global storage for
106 current src/dest IP address while in input functions.
108 2010-05-16: Simon Goldschmidt
109 * def.h: task #10391: Add preprocessor-macros for compile-time htonl
110 calculation (and use them throughout the stack where applicable)
112 2010-05-16: Simon Goldschmidt
113 * opt.h, memp_std.h, memp.c, ppp_oe.h/.c: PPPoE now uses its own MEMP pool
114 instead of the heap (moved struct pppoe_softc from ppp_oe.c to ppp_oe.h)
116 2010-05-16: Simon Goldschmidt
117 * opt.h, memp_std.h, dns.h/.c: DNS_LOCAL_HOSTLIST_IS_DYNAMIC uses its own
118 MEMP pool instead of the heap
120 2010-05-13: Simon Goldschmidt
121 * tcp.c, udp.c: task #6995: Implement SO_REUSEADDR (correctly), added
122 new option SO_REUSE_RXTOALL to pass received UDP broadcast/multicast
123 packets to more than one pcb.
125 2010-05-02: Simon Goldschmidt
126 * netbuf.h/.c, sockets.c, api_msg.c: use checksum-on-copy for sending
127 UDP data for LWIP_NETIF_TX_SINGLE_PBUF==1
129 2010-04-30: Simon Goldschmidt
130 * udp.h/.c, pbuf.h/.c: task #6849: added udp_send(_to/_if) functions that
131 take a precalculated checksum, added pbuf_fill_chksum() to copy data
132 into a pbuf and at the same time calculating the checksum for that data
134 2010-04-29: Simon Goldschmidt
135 * ip_addr.h, etharp.h/.c, autoip.c: Create overridable macros for copying
136 2-byte-aligned IP addresses and MAC addresses
138 2010-04-28: Patch by Bill Auerbach
139 * ip.c: Inline generating IP checksum to save a function call
141 2010-04-14: Simon Goldschmidt
142 * tcpip.h/.c, timers.c: Added an overridable define to get informed when the
143 tcpip_thread processes messages or timeouts to implement a watchdog.
145 2010-03-28: Simon Goldschmidt
146 * ip_frag.c: create a new (contiguous) PBUF_RAM for every outgoing
147 fragment if LWIP_NETIF_TX_SINGLE_PBUF==1
149 2010-03-27: Simon Goldschmidt
150 * etharp.c: Speedup TX by moving code from find_entry to etharp_output/
151 etharp_query to prevent unnecessary function calls (inspired by
154 2010-03-20: Simon Goldschmidt
155 * opt.h, tcpip.c/.h: Added an option to disable tcpip_(un)timeout code
156 since the linker cannot do this automatically to save space.
158 2010-03-20: Simon Goldschmidt
159 * opt.h, etharp.c/.h: Added support for static ARP table entries
161 2010-03-14: Simon Goldschmidt
162 * tcp_impl.h, tcp_out.c, inet_chksum.h/.c: task #6849: Calculate checksum
163 when creating TCP segments, not when (re-)transmitting them.
165 2010-03-07: Simon Goldschmidt
166 * sockets.c: bug #28775 (select/event_callback: only check select_cb_list
167 on change) plus use SYS_LIGHTWEIGHT_PROT to protect the select code.
168 This should speed up receiving data on sockets as the select code in
169 event_callback is only executed when select is waiting.
171 2010-03-06: Simon Goldschmidt
172 * tcp_out.c: task #7013 (Create option to have all packets delivered to
173 netif->output in one piece): Always copy to try to create single pbufs
176 2010-03-06: Simon Goldschmidt
177 * api.h, api_lib.c, sockets.c: task #10167 (sockets: speed up TCP recv
178 by not allocating a netbuf): added function netconn_recv_tcp_pbuf()
179 for tcp netconns to receive pbufs, not netbufs; use that function
182 2010-03-05: Jakob Ole Stoklundsen / Simon Goldschmidt
183 * opt.h, tcp.h, tcp_impl.h, tcp.c, tcp_in.c, tcp_out.c: task #7040:
184 Work on tcp_enqueue: Don't waste memory when chaining segments,
185 added option TCP_OVERSIZE to prevent creating many small pbufs when
186 calling tcp_write with many small blocks of data. Instead, pbufs are
187 allocated larger than needed and the space is used for later calls to
190 2010-02-21: Simon Goldschmidt
191 * stats.c/.h: Added const char* name to mem- and memp-stats for easier
194 2010-02-21: Simon Goldschmidt
195 * tcp.h (and usages), added tcp_impl.h: Splitted API and internal
196 implementation of tcp to make API usage cleare to application programmers
198 2010-02-14: Simon Goldschmidt/Stephane Lesage
199 * ip_addr.h: Improved some defines working on ip addresses, added faster
200 macro to copy addresses that cannot be NULL
202 2010-02-13: Simon Goldschmidt
203 * api.h, api_lib.c, api_msg.c, sockets.c: task #7865 (implement non-
204 blocking send operation)
206 2010-02-12: Simon Goldschmidt
207 * sockets.c/.h: Added a minimal version of posix fctl() to have a
208 standardised way to set O_NONBLOCK for nonblocking sockets.
210 2010-02-12: Simon Goldschmidt
211 * dhcp.c/.h, autoip.c/.h: task #10139 (Prefer statically allocated
212 memory): added autoip_set_struct() and dhcp_set_struct() to let autoip
213 and dhcp work with user-allocated structs instead of callin mem_malloc
215 2010-02-12: Simon Goldschmidt/Jeff Barber
216 * tcp.c/h: patch #6865 (SO_REUSEADDR for TCP): if pcb.so_options has
217 SOF_REUSEADDR set, allow binding to endpoint in TIME_WAIT
219 2010-02-12: Simon Goldschmidt
220 * sys layer: task #10139 (Prefer statically allocated memory): converted
221 mbox and semaphore functions to take pointers to sys_mbox_t/sys_sem_t;
222 converted sys_mbox_new/sys_sem_new to take pointers and return err_t;
223 task #7212: Add Mutex concept in sys_arch (define LWIP_COMPAT_MUTEX
224 to let sys.h use binary semaphores instead of mutexes - as before)
226 2010-02-09: Simon Goldschmidt (Simon Kallweit)
227 * timers.c/.h: Added function sys_restart_timeouts() from patch #7085
228 (Restart system timeout handling)
230 2010-02-09: Simon Goldschmidt
231 * netif.c/.h, removed loopif.c/.h: task #10153 (Integrate loopif into
232 netif.c) - loopif does not have to be created by the port any more,
233 just define LWIP_HAVE_LOOPIF to 1.
235 2010-02-08: Simon Goldschmidt
236 * inet.h, ip_addr.c/.h: Added reentrant versions of inet_ntoa/ipaddr_ntoa
237 inet_ntoa_r/ipaddr_ntoa_r
239 2010-02-08: Simon Goldschmidt
240 * netif.h: Added netif_s/get_igmp_mac_filter() macros
242 2010-02-05: Simon Goldschmidt
243 * netif.h: Added function-like macros to get/set the hostname on a netif
245 2010-02-04: Simon Goldschmidt
246 * nearly every file: Replaced struct ip_addr by typedef ip_addr_t to
247 make changing the actual implementation behind the typedef easier.
249 2010-02-01: Simon Goldschmidt
250 * opt.h, memp_std.h, dns.h, netdb.c, memp.c: Let netdb use a memp pool
251 for allocating memory when getaddrinfo() is called.
253 2010-01-31: Simon Goldschmidt
254 * dhcp.h, dhcp.c: Reworked the code that parses DHCP options: parse
255 them once instead of parsing for every option. This also removes
256 the need for mem_malloc from dhcp_recv and makes it possible to
257 correctly retrieve the BOOTP file.
259 2010-01-30: simon Goldschmidt
260 * sockets.c: Use SYS_LIGHTWEIGHT_PROT instead of a semaphore to protect
263 2010-01-29: Simon Goldschmidt (patch by Laura Garrett)
264 * api.h, api_msg.c, sockets.c: Added except set support in select
267 2010-01-29: Simon Goldschmidt (patch by Laura Garrett)
268 * api.h, sockets.h, err.h, api_lib.c, api_msg.c, sockets.c, err.c:
269 Add non-blocking support for connect (partly from patch #6860),
270 plus many cleanups in socket & netconn API.
272 2010-01-27: Simon Goldschmidt
273 * opt.h, tcp.h, init.c, api_msg.c: Added TCP_SNDQUEUELOWAT corresponding
274 to TCP_SNDLOWAT and added tcp_sndqueuelen() - this fixes bug #28605
276 2010-01-26: Simon Goldschmidt
277 * snmp: Use memp pools for snmp instead of the heap; added 4 new pools.
279 2010-01-14: Simon Goldschmidt
280 * ppp.c/.h: Fixed bug #27856: PPP: Set netif link- and status-callback
281 by adding ppp_set_netif_statuscallback()/ppp_set_netif_linkcallback()
283 2010-01-13: Simon Goldschmidt
284 * mem.c: The heap now may be moved to user-defined memory by defining
285 LWIP_RAM_HEAP_POINTER as a void pointer to that memory's address
286 (patch #6966 and bug #26133)
288 2010-01-10: Simon Goldschmidt (Bill Auerbach)
289 * opt.h, memp.c: patch #6822 (Add option to place memory pools in
292 2010-01-10: Simon Goldschmidt
293 * init.c, igmp.c: patch #6463 (IGMP - Adding Random Delay): added define
294 LWIP_RAND() for lwip-wide randomization (to be defined in cc.h)
296 2009-12-31: Simon Goldschmidt
297 * tcpip.c, init.c, memp.c, sys.c, memp_std.h, sys.h, tcpip.h
298 added timers.c/.h: Separated timer implementation from semaphore/mbox
299 implementation, moved timer implementation to timers.c/.h, timers are
300 now only called from tcpip_thread or by explicitly checking them.
303 2009-12-27: Simon Goldschmidt
304 * opt.h, etharp.h/.c, init.c, tcpip.c: Added an additional option
305 LWIP_ETHERNET to support ethernet without ARP (necessary for pure PPPoE)
310 2011-04-20: Simon Goldschmidt
311 * sys_arch.txt: sys_arch_timeouts() is not needed any more.
313 2011-04-13: Simon Goldschmidt
314 * tcp.c, udp.c: Fixed bug #33048 (Bad range for IP source port numbers) by
315 using ports in the IANA private/dynamic range (49152 through 65535).
317 2011-03-29: Simon Goldschmidt, patch by Emil Lhungdahl:
318 * etharp.h/.c: Fixed broken VLAN support.
320 2011-03-27: Simon Goldschmidt
321 * tcp.c: Fixed bug #32926 (TCP_RMV(&tcp_bound_pcbs) is called on unbound tcp
322 pcbs) by checking if the pcb was bound (local_port != 0).
324 2011-03-27: Simon Goldschmidt
325 * ppp.c: Fixed bug #32280 (ppp: a pbuf is freed twice)
327 2011-03-27: Simon Goldschmidt
328 * sockets.c: Fixed bug #32906: lwip_connect+lwip_send did not work for udp and
329 raw pcbs with LWIP_TCPIP_CORE_LOCKING==1.
331 2011-03-27: Simon Goldschmidt
332 * tcp_out.c: Fixed bug #32820 (Outgoing TCP connections created before route
333 is present never times out) by starting retransmission timer before checking
336 2011-03-22: Simon Goldschmidt
337 * ppp.c: Fixed bug #32648 (PPP code crashes when terminating a link) by only
338 calling sio_read_abort() if the file descriptor is valid.
340 2011-03-14: Simon Goldschmidt
341 * err.h/.c, sockets.c, api_msg.c: fixed bug #31748 (Calling non-blocking connect
342 more than once can render a socket useless) since it mainly involves changing
343 "FATAL" classification of error codes: ERR_USE and ERR_ISCONN just aren't fatal.
345 2011-03-13: Simon Goldschmidt
346 * sockets.c: fixed bug #32769 (ESHUTDOWN is linux-specific) by fixing
347 err_to_errno_table (ERR_CLSD: ENOTCONN instead of ESHUTDOWN), ERR_ISCONN:
348 use EALRADY instead of -1
350 2011-03-13: Simon Goldschmidt
351 * api_lib.c: netconn_accept: return ERR_ABRT instead of ERR_CLSD if the
352 connection has been aborted by err_tcp (since this is not a normal closing
355 2011-03-13: Simon Goldschmidt
356 * tcp.c: tcp_bind: return ERR_VAL instead of ERR_ISCONN when trying to bind
357 with pcb->state != CLOSED
359 2011-02-17: Simon Goldschmidt
360 * rawapi.txt: Fixed bug #32561 tcp_poll argument definition out-of-order in
363 2011-02-17: Simon Goldschmidt
364 * many files: Added missing U/UL modifiers to fix 16-bit-arch portability.
366 2011-01-24: Simon Goldschmidt
367 * sockets.c: Fixed bug #31741: lwip_select seems to have threading problems
369 2010-12-02: Simon Goldschmidt
370 * err.h: Fixed ERR_IS_FATAL so that ERR_WOULDBLOCK is not fatal.
372 2010-11-23: Simon Goldschmidt
373 * api.h, api_lib.c, api_msg.c, sockets.c: netconn.recv_avail is only used for
374 LWIP_SO_RCVBUF and ioctl/FIONREAD.
376 2010-11-23: Simon Goldschmidt
377 * etharp.c: Fixed bug #31720: ARP-queueing: RFC 1122 recommends to queue at
378 least 1 packet -> ARP_QUEUEING==0 now queues the most recent packet.
380 2010-11-23: Simon Goldschmidt
381 * tcp_in.c: Fixed bug #30577: tcp_input: don't discard ACK-only packets after
382 refusing 'refused_data' again.
384 2010-11-22: Simon Goldschmidt
385 * sockets.c: Fixed bug #31590: getsockopt(... SO_ERROR ...) gives EINPROGRESS
386 after a successful nonblocking connection.
388 2010-11-22: Simon Goldschmidt
389 * etharp.c: Fixed bug #31722: IP packets sent with an AutoIP source addr
390 must be sent link-local
392 2010-11-22: Simon Goldschmidt
393 * timers.c: patch #7329: tcp_timer_needed prototype was ifdef'ed out for
396 2010-11-20: Simon Goldschmidt
397 * sockets.c: Fixed bug #31170: lwip_setsockopt() does not set socket number
399 2010-11-20: Simon Goldschmidt
400 * sockets.h: Fixed bug #31304: Changed SHUT_RD, SHUT_WR and SHUT_RDWR to
401 resemble other stacks.
403 2010-11-20: Simon Goldschmidt
404 * dns.c: Fixed bug #31535: TCP_SND_QUEUELEN must be at least 2 or else
405 no-copy TCP writes will never succeed.
407 2010-11-20: Simon Goldschmidt
408 * dns.c: Fixed bug #31701: Error return value from dns_gethostbyname() does
409 not match documentation: return ERR_ARG instead of ERR_VAL if not
410 initialized or wrong argument.
412 2010-10-20: Simon Goldschmidt
413 * sockets.h: Fixed bug #31385: sizeof(struct sockaddr) is 30 but should be 16
415 2010-10-05: Simon Goldschmidt
416 * dhcp.c: Once again fixed #30038: DHCP/AutoIP cooperation failed when
417 replugging the network cable after an AutoIP address was assigned.
419 2010-08-10: Simon Goldschmidt
420 * tcp.c: Fixed bug #30728: tcp_new_port() did not check listen pcbs
422 2010-08-03: Simon Goldschmidt
423 * udp.c, raw.c: Don't chain empty pbufs when sending them (fixes bug #30625)
425 2010-08-01: Simon Goldschmidt (patch by Greg Renda)
426 * ppp.c: Applied patch #7264 (PPP protocols are rejected incorrectly on big
427 endian architectures)
429 2010-07-28: Simon Goldschmidt
430 * api_lib.c, api_msg.c, sockets.c, mib2.c: Fixed compilation with TCP or UDP
433 2010-07-27: Simon Goldschmidt
434 * tcp.c: Fixed bug #30565 (tcp_connect() check bound list): that check did no
435 harm but never did anything
437 2010-07-21: Simon Goldschmidt
438 * ip.c: Fixed invalid fix for bug #30402 (CHECKSUM_GEN_IP_INLINE does not
441 2010-07-16: Kieran Mansley
442 * msg_in.c: Fixed SNMP ASN constant defines to not use ! operator
444 2010-07-10: Simon Goldschmidt
445 * ip.c: Fixed bug #30402: CHECKSUM_GEN_IP_INLINE does not add IP options
447 2010-06-30: Simon Goldschmidt
448 * api_msg.c: fixed bug #30300 (shutdown parameter was not initialized in
451 2010-06-28: Kieran Mansley
452 * timers.c remove unportable printing of C function pointers
454 2010-06-24: Simon Goldschmidt
455 * init.c, timers.c/.h, opt.h, memp_std.h: From patch #7221: added flag
456 NO_SYS_NO_TIMERS to drop timer support for NO_SYS==1 for easier upgrading
458 2010-06-24: Simon Goldschmidt
459 * api(_lib).c/.h, api_msg.c/.h, sockets.c/.h: Fixed bug #10088: Correctly
460 implemented shutdown at socket level.
462 2010-06-21: Simon Goldschmidt
463 * pbuf.c/.h, ip_frag.c/.h, opt.h, memp_std.h: Fixed bug #29361 (ip_frag has
464 problems with zero-copy DMA MACs) by adding custom pbufs and implementing
465 custom pbufs that reference other (original) pbufs. Additionally set
466 IP_FRAG_USES_STATIC_BUF=0 as default to be on the safe side.
468 2010-06-15: Simon Goldschmidt
469 * dhcp.c: Fixed bug #29970: DHCP endian issue parsing option responses
471 2010-06-14: Simon Goldschmidt
472 * autoip.c: Fixed bug #30039: AutoIP does not reuse previous addresses
474 2010-06-12: Simon Goldschmidt
475 * dhcp.c: Fixed bug #30038: dhcp_network_changed doesn't reset AUTOIP coop
478 2010-05-17: Simon Goldschmidt
479 * netdb.c: Correctly NULL-terminate h_addr_list
481 2010-05-16: Simon Goldschmidt
482 * def.h/.c: changed the semantics of LWIP_PREFIX_BYTEORDER_FUNCS to prevent
483 "symbol already defined" i.e. when linking to winsock
485 2010-05-05: Simon Goldschmidt
486 * def.h, timers.c: Fixed bug #29769 (sys_check_timeouts: sys_now() may
489 2010-04-21: Simon Goldschmidt
490 * api_msg.c: Fixed bug #29617 (sometime cause stall on delete listening
493 2010-03-28: Luca Ceresoli
494 * ip_addr.c/.h: patch #7143: Add a few missing const qualifiers
496 2010-03-27: Luca Ceresoli
497 * mib2.c: patch #7130: remove meaningless const qualifiers
499 2010-03-26: Simon Goldschmidt
500 * tcp_out.c: Make LWIP_NETIF_TX_SINGLE_PBUF work for TCP, too
502 2010-03-26: Simon Goldschmidt
503 * various files: Fixed compiling with different options disabled (TCP/UDP),
504 triggered by bug #29345; don't allocate acceptmbox if LWIP_TCP is disabled
506 2010-03-25: Simon Goldschmidt
507 * sockets.c: Fixed bug #29332: lwip_select() processes readset incorrectly
509 2010-03-25: Simon Goldschmidt
510 * tcp_in.c, test_tcp_oos.c: Fixed bug #29080: Correctly handle remote side
511 overrunning our rcv_wnd in ooseq case.
513 2010-03-22: Simon Goldschmidt
514 * tcp.c: tcp_listen() did not copy the pcb's prio.
516 2010-03-19: Simon Goldschmidt
517 * snmp_msg.c: Fixed bug #29256: SNMP Trap address was not correctly set
519 2010-03-14: Simon Goldschmidt
520 * opt.h, etharp.h: Fixed bug #29148 (Incorrect PBUF_POOL_BUFSIZE for ports
521 where ETH_PAD_SIZE > 0) by moving definition of ETH_PAD_SIZE to opt.h
522 and basing PBUF_LINK_HLEN on it.
524 2010-03-08: Simon Goldschmidt
525 * netif.c, ipv4/ip.c: task #10241 (AutoIP: don't break existing connections
526 when assiging routable address): when checking incoming packets and
527 aborting existing connection on address change, filter out link-local
530 2010-03-06: Simon Goldschmidt
531 * sockets.c: Fixed LWIP_NETIF_TX_SINGLE_PBUF for LWIP_TCPIP_CORE_LOCKING
533 2010-03-06: Simon Goldschmidt
534 * ipv4/ip.c: Don't try to forward link-local addresses
536 2010-03-06: Simon Goldschmidt
537 * etharp.c: Fixed bug #29087: etharp: don't send packets for LinkLocal-
540 2010-03-05: Simon Goldschmidt
541 * dhcp.c: Fixed bug #29072: Correctly set ciaddr based on message-type
544 2010-03-05: Simon Goldschmidt
545 * api_msg.c: Correctly set TCP_WRITE_FLAG_MORE when netconn_write is split
546 into multiple calls to tcp_write.
548 2010-02-21: Simon Goldschmidt
549 * opt.h, mem.h, dns.c: task #10140: Remove DNS_USES_STATIC_BUF (keep
550 the implementation of DNS_USES_STATIC_BUF==1)
552 2010-02-20: Simon Goldschmidt
553 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Task #10088: Correctly implement
554 close() vs. shutdown(). Now the application does not get any more
555 recv callbacks after calling tcp_close(). Added tcp_shutdown().
557 2010-02-19: Simon Goldschmidt
558 * mem.c/.h, pbuf.c: Renamed mem_realloc() to mem_trim() to prevent
559 confusion with realloc()
561 2010-02-15: Simon Goldschmidt/Stephane Lesage
562 * netif.c/.h: Link status does not depend on LWIP_NETIF_LINK_CALLBACK
565 2010-02-14: Simon Goldschmidt
566 * netif.c: Fixed bug #28877 (Duplicate ARP gratuitous packet with
567 LWIP_NETIF_LINK_CALLBACK set on) by only sending if both link- and
568 admin-status of a netif are up
570 2010-02-14: Simon Goldschmidt
571 * opt.h: Disable ETHARP_TRUST_IP_MAC by default since it slows down packet
572 reception and is not really necessary
574 2010-02-14: Simon Goldschmidt
575 * etharp.c/.h: Fixed ARP input processing: only add a new entry if a
576 request was directed as us (RFC 826, Packet Reception), otherwise
577 only update existing entries; internalized some functions
579 2010-02-14: Simon Goldschmidt
580 * netif.h, etharp.c, tcpip.c: Fixed bug #28183 (ARP and TCP/IP cannot be
581 disabled on netif used for PPPoE) by adding a new netif flag
582 (NETIF_FLAG_ETHERNET) that tells the stack the device is an ethernet
583 device but prevents usage of ARP (so that ethernet_input can be used
586 2010-02-12: Simon Goldschmidt
587 * netif.c: netif_set_link_up/down: only do something if the link state
590 2010-02-12: Simon Goldschmidt/Stephane Lesage
591 * api_msg.c: Fixed bug #28865 (Cannot close socket/netconn in non-blocking
594 2010-02-12: Simon Goldschmidt
595 * mem.h: Fixed bug #28866 (mem_realloc function defined in mem.h)
597 2010-02-09: Simon Goldschmidt
598 * api_lib.c, api_msg.c, sockets.c, api.h, api_msg.h: Fixed bug #22110
599 (recv() makes receive window update for data that wasn't received by
602 2010-02-09: Simon Goldschmidt/Stephane Lesage
603 * sockets.c: Fixed bug #28853 (lwip_recvfrom() returns 0 on receive time-out
604 or any netconn_recv() error)
606 2010-02-09: Simon Goldschmidt
607 * ppp.c: task #10154 (PPP: Update snmp in/out counters for tx/rx packets)
609 2010-02-09: Simon Goldschmidt
610 * netif.c: For loopback packets, adjust the stats- and snmp-counters
611 for the loopback netif.
613 2010-02-08: Simon Goldschmidt
614 * igmp.c/.h, ip.h: Moved most defines from igmp.h to igmp.c for clarity
615 since they are not used anywhere else.
617 2010-02-08: Simon Goldschmidt (Stéphane Lesage)
618 * igmp.c, igmp.h, stats.c, stats.h: Improved IGMP stats
619 (patch from bug #28798)
621 2010-02-08: Simon Goldschmidt (Stéphane Lesage)
622 * igmp.c: Fixed bug #28798 (Error in "Max Response Time" processing) and
623 another bug when LWIP_RAND() returns zero.
625 2010-02-04: Simon Goldschmidt
626 * nearly every file: Use macros defined in ip_addr.h (some of them new)
627 to work with IP addresses (preparation for bug #27352 - Change ip_addr
628 from struct to typedef (u32_t) - and better code).
630 2010-01-31: Simon Goldschmidt
631 * netif.c: Don't call the link-callback from netif_set_up/down() since
632 this invalidly retriggers DHCP.
634 2010-01-29: Simon Goldschmidt
635 * ip_addr.h, inet.h, def.h, inet.c, def.c, more: Cleanly separate the
636 portability file inet.h and its contents from the stack: moved htonX-
637 functions to def.h (and the new def.c - they are not ipv4 dependent),
638 let inet.h depend on ip_addr.h and not the other way round.
639 This fixes bug #28732.
641 2010-01-28: Kieran Mansley
642 * tcp.c: Ensure ssthresh >= 2*MSS
644 2010-01-27: Simon Goldschmidt
645 * tcp.h, tcp.c, tcp_in.c: Fixed bug #27871: Calling tcp_abort() in recv
646 callback can lead to accessing unallocated memory. As a consequence,
647 ERR_ABRT means the application has called tcp_abort()!
649 2010-01-25: Simon Goldschmidt
650 * snmp_structs.h, msg_in.c: Partly fixed bug #22070 (MIB_OBJECT_WRITE_ONLY
651 not implemented in SNMP): write-only or not-accessible are still
652 returned by getnext (though not by get)
654 2010-01-24: Simon Goldschmidt
655 * snmp: Renamed the private mib node from 'private' to 'mib_private' to
656 not use reserved C/C++ keywords
658 2010-01-23: Simon Goldschmidt
659 * sockets.c: Fixed bug #28716: select() returns 0 after waiting for less
662 2010-01-21: Simon Goldschmidt
663 * tcp.c, api_msg.c: Fixed bug #28651 (tcp_connect: no callbacks called
664 if tcp_enqueue fails) both in raw- and netconn-API
666 2010-01-19: Simon Goldschmidt
667 * api_msg.c: Fixed bug #27316: netconn: Possible deadlock in err_tcp
669 2010-01-18: Iordan Neshev/Simon Goldschmidt
670 * src/netif/ppp: reorganised PPP sourcecode to 2.3.11 including some
671 bugfix backports from 2.4.x.
673 2010-01-18: Simon Goldschmidt
674 * mem.c: Fixed bug #28679: mem_realloc calculates mem_stats wrong
676 2010-01-17: Simon Goldschmidt
677 * api_lib.c, api_msg.c, (api_msg.h, api.h, sockets.c, tcpip.c):
678 task #10102: "netconn: clean up conn->err threading issues" by adding
679 error return value to struct api_msg_msg
681 2010-01-17: Simon Goldschmidt
682 * api.h, api_lib.c, sockets.c: Changed netconn_recv() and netconn_accept()
683 to return err_t (bugs #27709 and #28087)
685 2010-01-14: Simon Goldschmidt
686 * ...: Use typedef for function prototypes throughout the stack.
688 2010-01-13: Simon Goldschmidt
689 * api_msg.h/.c, api_lib.c: Fixed bug #26672 (close connection when receive
690 window = 0) by correctly draining recvmbox/acceptmbox
692 2010-01-11: Simon Goldschmidt
693 * pap.c: Fixed bug #13315 (PPP PAP authentication can result in
694 erroneous callbacks) by copying the code from recent pppd
696 2010-01-10: Simon Goldschmidt
697 * raw.c: Fixed bug #28506 (raw_bind should filter received packets)
699 2010-01-10: Simon Goldschmidt
700 * tcp.h/.c: bug #28127 (remove call to tcp_output() from tcp_ack(_now)())
702 2010-01-08: Simon Goldschmidt
703 * sockets.c: Fixed bug #28519 (lwip_recvfrom bug with len > 65535)
705 2010-01-08: Simon Goldschmidt
706 * dns.c: Copy hostname for DNS_LOCAL_HOSTLIST_IS_DYNAMIC==1 since string
707 passed to dns_local_addhost() might be volatile
709 2010-01-07: Simon Goldschmidt
710 * timers.c, tcp.h: Call tcp_timer_needed() with NO_SYS==1, too
712 2010-01-06: Simon Goldschmidt
713 * netdb.h: Fixed bug #28496: missing include guards in netdb.h
715 2009-12-31: Simon Goldschmidt
716 * many ppp files: Reorganised PPP source code from ucip structure to pppd
717 structure to easily compare our code against the pppd code (around v2.3.1)
719 2009-12-27: Simon Goldschmidt
720 * tcp_in.c: Another fix for bug #28241 (ooseq processing) and adapted
728 2009-10-27 Simon Goldschmidt/Stephan Lesage
729 * netifapi.c/.h: Added netifapi_netif_set_addr()
731 2009-10-07 Simon Goldschmidt/Fabian Koch
732 * api_msg.c, netbuf.c/.h, opt.h: patch #6888: Patch for UDP Netbufs to
733 support dest-addr and dest-port (optional: LWIP_NETBUF_RECVINFO)
735 2009-08-26 Simon Goldschmidt/Simon Kallweit
736 * slipif.c/.h: bug #26397: SLIP polling support
738 2009-08-25 Simon Goldschmidt
739 * opt.h, etharp.h/.c: task #9033: Support IEEE 802.1q tagged frame (VLAN),
740 New configuration options ETHARP_SUPPORT_VLAN and ETHARP_VLAN_CHECK.
742 2009-08-25 Simon Goldschmidt
743 * ip_addr.h, netdb.c: patch #6900: added define ip_ntoa(struct ip_addr*)
745 2009-08-24 Jakob Stoklund Olesen
746 * autoip.c, dhcp.c, netif.c: patch #6725: Teach AutoIP and DHCP to respond
747 to netif_set_link_up().
749 2009-08-23 Simon Goldschmidt
750 * tcp.h/.c: Added function tcp_debug_state_str() to convert a tcp state
751 to a human-readable string.
755 2009-12-24: Kieran Mansley
756 * tcp_in.c Apply patches from Oleg Tyshev to improve OOS processing
759 2009-12-06: Simon Goldschmidt
760 * ppp.h/.c: Fixed bug #27079 (Yet another leak in PPP): outpacket_buf can
761 be statically allocated (like in ucip)
763 2009-12-04: Simon Goldschmidt (patch by Ioardan Neshev)
764 * pap.c: patch #6969: PPP: missing PAP authentication UNTIMEOUT
766 2009-12-03: Simon Goldschmidt
767 * tcp.h, tcp_in.c, tcp_out.c: Fixed bug #28106: dup ack for fast retransmit
768 could have non-zero length
770 2009-12-02: Simon Goldschmidt
771 * tcp_in.c: Fixed bug #27904: TCP sends too many ACKs: delay resetting
772 tcp_input_pcb until after calling the pcb's callbacks
774 2009-11-29: Simon Goldschmidt
775 * tcp_in.c: Fixed bug #28054: Two segments with FIN flag on the out-of-
776 sequence queue, also fixed PBUF_POOL leak in the out-of-sequence code
778 2009-11-29: Simon Goldschmidt
779 * pbuf.c: Fixed bug #28064: pbuf_alloc(PBUF_POOL) is not thread-safe by
780 queueing a call into tcpip_thread to free ooseq-bufs if the pool is empty
782 2009-11-26: Simon Goldschmidt
783 * tcp.h: Fixed bug #28098: Nagle can prevent fast retransmit from sending
786 2009-11-26: Simon Goldschmidt
787 * tcp.h, sockets.c: Fixed bug #28099: API required to disable Nagle
788 algorithm at PCB level
790 2009-11-22: Simon Goldschmidt
791 * tcp_out.c: Fixed bug #27905: FIN isn't combined with data on unsent
793 2009-11-22: Simon Goldschmidt (suggested by Bill Auerbach)
794 * tcp.c: tcp_alloc: prevent increasing stats.err for MEMP_TCP_PCB when
795 reusing time-wait pcb
797 2009-11-20: Simon Goldschmidt (patch by Albert Bartel)
798 * sockets.c: Fixed bug #28062: Data received directly after accepting
799 does not wake up select
801 2009-11-11: Simon Goldschmidt
802 * netdb.h: Fixed bug #27994: incorrect define for freeaddrinfo(addrinfo)
804 2009-10-30: Simon Goldschmidt
805 * opt.h: Increased default value for TCP_MSS to 536, updated default
806 value for TCP_WND to 4*TCP_MSS to keep delayed ACK working.
808 2009-10-28: Kieran Mansley
809 * tcp_in.c, tcp_out.c, tcp.h: re-work the fast retransmission code
810 to follow algorithm from TCP/IP Illustrated
812 2009-10-27: Kieran Mansley
813 * tcp_in.c: fix BUG#27445: grow cwnd with every duplicate ACK
815 2009-10-25: Simon Goldschmidt
816 * tcp.h: bug-fix in the TCP_EVENT_RECV macro (has to call tcp_recved if
817 pcb->recv is NULL to keep rcv_wnd correct)
819 2009-10-25: Simon Goldschmidt
820 * tcp_in.c: Fixed bug #26251: RST process in TIME_WAIT TCP state
822 2009-10-23: Simon Goldschmidt (David Empson)
823 * tcp.c: Fixed bug #27783: Silly window avoidance for small window sizes
825 2009-10-21: Simon Goldschmidt
826 * tcp_in.c: Fixed bug #27215: TCP sent() callback gives leading and
827 trailing 1 byte len (SYN/FIN)
829 2009-10-21: Simon Goldschmidt
830 * tcp_out.c: Fixed bug #27315: zero window probe and FIN
832 2009-10-19: Simon Goldschmidt
833 * dhcp.c/.h: Minor code simplification (don't store received pbuf, change
834 conditional code to assert where applicable), check pbuf length before
835 testing for valid reply
837 2009-10-19: Simon Goldschmidt
838 * dhcp.c: Removed most calls to udp_connect since they aren't necessary
839 when using udp_sendto_if() - always stay connected to IP_ADDR_ANY.
841 2009-10-16: Simon Goldschmidt
842 * ip.c: Fixed bug #27390: Source IP check in ip_input() causes it to drop
843 valid DHCP packets -> allow 0.0.0.0 as source address when LWIP_DHCP is
846 2009-10-15: Simon Goldschmidt (Oleg Tyshev)
847 * tcp_in.c: Fixed bug #27329: dupacks by unidirectional data transmit
849 2009-10-15: Simon Goldschmidt
850 * api_lib.c: Fixed bug #27709: conn->err race condition on netconn_recv()
853 2009-10-15: Simon Goldschmidt
854 * autoip.c: Fixed bug #27704: autoip starts with wrong address
855 LWIP_AUTOIP_CREATE_SEED_ADDR() returned address in host byte order instead
856 of network byte order
858 2009-10-11 Simon Goldschmidt (Jörg Kesten)
859 * tcp_out.c: Fixed bug #27504: tcp_enqueue wrongly concatenates segments
860 which are not consecutive when retransmitting unacked segments
862 2009-10-09 Simon Goldschmidt
863 * opt.h: Fixed default values of some stats to only be enabled if used
864 Fixes bug #27338: sys_stats is defined when NO_SYS = 1
866 2009-08-30 Simon Goldschmidt
867 * ip.c: Fixed bug bug #27345: "ip_frag() does not use the LWIP_NETIF_LOOPBACK
868 function" by checking for loopback before calling ip_frag
870 2009-08-25 Simon Goldschmidt
871 * dhcp.c: fixed invalid dependency to etharp_query if DHCP_DOES_ARP_CHECK==0
873 2009-08-23 Simon Goldschmidt
874 * ppp.c: bug #27078: Possible memory leak in pppInit()
876 2009-08-23 Simon Goldschmidt
877 * netdb.c, dns.c: bug #26657: DNS, if host name is "localhost", result
880 2009-08-23 Simon Goldschmidt
881 * opt.h, init.c: bug #26649: TCP fails when TCP_MSS > TCP_SND_BUF
882 Fixed wrong parenthesis, added check in init.c
884 2009-08-23 Simon Goldschmidt
885 * ppp.c: bug #27266: wait-state debug message in pppMain occurs every ms
887 2009-08-23 Simon Goldschmidt
888 * many ppp files: bug #27267: Added include to string.h where needed
890 2009-08-23 Simon Goldschmidt
891 * tcp.h: patch #6843: tcp.h macro optimization patch (for little endian)
898 2009-05-10 Simon Goldschmidt
899 * opt.h, sockets.c, pbuf.c, netbuf.h, pbuf.h: task #7013: Added option
900 LWIP_NETIF_TX_SINGLE_PBUF to try to create transmit packets from only
901 one pbuf to help MACs that don't support scatter-gather DMA.
903 2009-05-09 Simon Goldschmidt
904 * icmp.h, icmp.c: Shrinked ICMP code, added option to NOT check icoming
905 ECHO pbuf for size (just use it): LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN
907 2009-05-05 Simon Goldschmidt, Jakob Stoklund Olesen
908 * ip.h, ip.c: Added ip_current_netif() & ip_current_header() to receive
909 extended info about the currently received packet.
911 2009-04-27 Simon Goldschmidt
912 * sys.h: Made SYS_LIGHTWEIGHT_PROT and sys_now() work with NO_SYS=1
914 2009-04-25 Simon Goldschmidt
915 * mem.c, opt.h: Added option MEM_USE_POOLS_TRY_BIGGER_POOL to try the next
916 bigger malloc pool if one is empty (only usable with MEM_USE_POOLS).
918 2009-04-21 Simon Goldschmidt
919 * dns.c, init.c, dns.h, opt.h: task #7507, patch #6786: DNS supports static
920 hosts table. New configuration options DNS_LOCAL_HOSTLIST and
921 DNS_LOCAL_HOSTLIST_IS_DYNAMIC. Also, DNS_LOOKUP_LOCAL_EXTERN() can be defined
922 as an external function for lookup.
924 2009-04-15 Simon Goldschmidt
925 * dhcp.c: patch #6763: Global DHCP XID can be redefined to something more unique
927 2009-03-31 Kieran Mansley
928 * tcp.c, tcp_out.c, tcp_in.c, sys.h, tcp.h, opts.h: add support for
929 TCP timestamp options, off by default. Rework tcp_enqueue() to
930 take option flags rather than specified option data
932 2009-02-18 Simon Goldschmidt
933 * cc.h: Added printf formatter for size_t: SZT_F
935 2009-02-16 Simon Goldschmidt (patch by Rishi Khan)
936 * icmp.c, opt.h: patch #6539: (configurable) response to broadcast- and multicast
939 2009-02-12 Simon Goldschmidt
940 * init.h: Added LWIP_VERSION to get the current version of the stack
942 2009-02-11 Simon Goldschmidt (suggested by Gottfried Spitaler)
943 * opt.h, memp.h/.c: added MEMP_MEM_MALLOC to use mem_malloc/mem_free instead
944 of the pool allocator (can save code size with MEM_LIBC_MALLOC if libc-malloc
947 2009-01-28 Jonathan Larmour (suggested by Bill Bauerbach)
948 * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h: inet_chksum_pseudo_partial()
949 is only used by UDPLITE at present, so conditionalise it.
951 2008-12-03 Simon Goldschmidt (base on patch from Luca Ceresoli)
952 * autoip.c: checked in (slightly modified) patch #6683: Customizable AUTOIP
953 "seed" address. This should reduce AUTOIP conflicts if
954 LWIP_AUTOIP_CREATE_SEED_ADDR is overridden.
956 2008-10-02 Jonathan Larmour and Rishi Khan
957 * sockets.c (lwip_accept): Return EWOULDBLOCK if would block on non-blocking
960 2008-06-30 Simon Goldschmidt
961 * mem.c, opt.h, stats.h: fixed bug #21433: Calling mem_free/pbuf_free from
962 interrupt context isn't safe: LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT allows
963 mem_free to run between mem_malloc iterations. Added illegal counter for
966 2008-06-27 Simon Goldschmidt
967 * stats.h/.c, some other files: patch #6483: stats module improvement:
968 Added defines to display each module's statistic individually, added stats
969 defines for MEM, MEMP and SYS modules, removed (unused) rexmit counter.
971 2008-06-17 Simon Goldschmidt
972 * err.h: patch #6459: Made err_t overridable to use a more efficient type
973 (define LWIP_ERR_T in cc.h)
975 2008-06-17 Simon Goldschmidt
976 * slipif.c: patch #6480: Added a configuration option for slipif for symmetry
979 2008-06-17 Simon Goldschmidt (patch by Luca Ceresoli)
980 * netif.c, loopif.c, ip.c, netif.h, loopif.h, opt.h: Checked in slightly
981 modified version of patch # 6370: Moved loopif code to netif.c so that
982 loopback traffic is supported on all netifs (all local IPs).
983 Added option to limit loopback packets for each netifs.
987 2009-08-12 Kieran Mansley
988 * tcp_in.c, tcp.c: Fix bug #27209: handle trimming of segments when
989 out of window or out of order properly
991 2009-08-12 Kieran Mansley
992 * tcp_in.c: Fix bug #27199: use snd_wl2 instead of snd_wl1
994 2009-07-28 Simon Goldschmidt
995 * mem.h: Fixed bug #27105: "realloc() cannot replace mem_realloc()"s
997 2009-07-27 Kieran Mansley
998 * api.h api_msg.h netdb.h sockets.h: add missing #include directives
1000 2009-07-09 Kieran Mansley
1001 * api_msg.c, sockets.c, api.h: BUG23240 use signed counters for
1002 recv_avail and don't increment counters until message successfully
1005 2009-06-25 Kieran Mansley
1006 * api_msg.c api.h: BUG26722: initialise netconn write variables
1009 2009-06-25 Kieran Mansley
1010 * tcp.h: BUG26879: set ret value in TCP_EVENT macros when function is not set
1012 2009-06-25 Kieran Mansley
1013 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: BUG26301 and BUG26267: correct
1014 simultaneous close behaviour, and make snd_nxt have the same meaning
1017 2009-05-12 Simon Goldschmidt
1018 * etharp.h, etharp.c, netif.c: fixed bug #26507: "Gratuitous ARP depends on
1019 arp_table / uses etharp_query" by adding etharp_gratuitous()
1021 2009-05-12 Simon Goldschmidt
1022 * ip.h, ip.c, igmp.c: bug #26487: Added ip_output_if_opt that can add IP options
1023 to the IP header (used by igmp_ip_output_if)
1025 2009-05-06 Simon Goldschmidt
1026 * inet_chksum.c: On little endian architectures, use LWIP_PLATFORM_HTONS (if
1027 defined) for SWAP_BYTES_IN_WORD to speed up checksumming.
1029 2009-05-05 Simon Goldschmidt
1030 * sockets.c: bug #26405: Prematurely released semaphore causes lwip_select()
1033 2009-05-04 Simon Goldschmidt
1034 * init.c: snmp was not initialized in lwip_init()
1036 2009-05-04 Frédéric Bernon
1037 * dhcp.c, netbios.c: Changes if IP_SOF_BROADCAST is enabled.
1039 2009-05-03 Simon Goldschmidt
1040 * tcp.h: bug #26349: Nagle algorithm doesn't send although segment is full
1041 (and unsent->next == NULL)
1043 2009-05-02 Simon Goldschmidt
1044 * tcpip.h, tcpip.c: fixed tcpip_untimeout (does not need the time, broken after
1045 1.3.0 in CVS only) - fixes compilation of ppp_oe.c
1047 2009-05-02 Simon Goldschmidt
1048 * msg_in.c: fixed bug #25636: SNMPSET value is ignored for integer fields
1050 2009-05-01 Simon Goldschmidt
1051 * pap.c: bug #21680: PPP upap_rauthnak() drops legal NAK packets
1053 2009-05-01 Simon Goldschmidt
1054 * ppp.c: bug #24228: Memory corruption with PPP and DHCP
1056 2009-04-29 Frédéric Bernon
1057 * raw.c, udp.c, init.c, opt.h, ip.h, sockets.h: bug #26309: Implement the
1058 SO(F)_BROADCAST filter for all API layers. Avoid the unindented reception
1059 of broadcast packets even when this option wasn't set. Port maintainers
1060 which want to enable this filter have to set IP_SOF_BROADCAST=1 in opt.h.
1061 If you want this option also filter broadcast on recv operations, you also
1062 have to set IP_SOF_BROADCAST_RECV=1 in opt.h.
1064 2009-04-28 Simon Goldschmidt, Jakob Stoklund Olesen
1065 * dhcp.c: patch #6721, bugs #25575, #25576: Some small fixes to DHCP and
1066 DHCP/AUTOIP cooperation
1068 2009-04-25 Simon Goldschmidt, Oleg Tyshev
1069 * tcp_out.c: bug #24212: Deadlocked tcp_retransmit due to exceeded pcb->cwnd
1070 Fixed by sorting the unsent and unacked queues (segments are inserted at the
1071 right place in tcp_output and tcp_rexmit).
1073 2009-04-25 Simon Goldschmidt
1074 * memp.c, mem.c, memp.h, mem_std.h: bug #26213 "Problem with memory allocation
1075 when debugging": memp_sizes contained the wrong sizes (including sanity
1076 regions); memp pools for MEM_USE_POOLS were too small
1078 2009-04-24 Simon Goldschmidt, Frédéric Bernon
1079 * inet.c: patch #6765: Fix a small problem with the last changes (incorrect
1080 behavior, with with ip address string not ended by a '\0', a space or a
1083 2009-04-19 Simon Goldschmidt
1084 * rawapi.txt: Fixed bug #26069: Corrected documentation: if tcp_connect fails,
1085 pcb->err is called, not pcb->connected (with an error code).
1087 2009-04-19 Simon Goldschmidt
1088 * tcp_out.c: Fixed bug #26236: "TCP options (timestamp) don't work with
1089 no-copy-tcpwrite": deallocate option data, only concat segments with same flags
1091 2009-04-19 Simon Goldschmidt
1092 * tcp_out.c: Fixed bug #25094: "Zero-length pbuf" (options are now allocated
1093 in the header pbuf, not the data pbuf)
1095 2009-04-18 Simon Goldschmidt
1096 * api_msg.c: fixed bug #25695: Segmentation fault in do_writemore()
1098 2009-04-15 Simon Goldschmidt
1099 * sockets.c: tried to fix bug #23559: lwip_recvfrom problem with tcp
1101 2009-04-15 Simon Goldschmidt
1102 * dhcp.c: task #9192: mem_free of dhcp->options_in and dhcp->msg_in
1104 2009-04-15 Simon Goldschmidt
1105 * ip.c, ip6.c, tcp_out.c, ip.h: patch #6808: Add a utility function
1106 ip_hinted_output() (for smaller code mainly)
1108 2009-04-15 Simon Goldschmidt
1109 * inet.c: patch #6765: Supporting new line characters in inet_aton()
1111 2009-04-15 Simon Goldschmidt
1112 * dhcp.c: patch #6764: DHCP rebind and renew did not send hostnam option;
1113 Converted constant OPTION_MAX_MSG_SIZE to netif->mtu, check if netif->mtu
1114 is big enough in dhcp_start
1116 2009-04-15 Simon Goldschmidt
1117 * netbuf.c: bug #26027: netbuf_chain resulted in pbuf memory leak
1119 2009-04-15 Simon Goldschmidt
1120 * sockets.c, ppp.c: bug #25763: corrected 4 occurrences of SMEMCPY to MEMCPY
1122 2009-04-15 Simon Goldschmidt
1123 * sockets.c: bug #26121: set_errno can be overridden
1125 2009-04-09 Kieran Mansley (patch from Luca Ceresoli <lucaceresoli>)
1126 * init.c, opt.h: Patch#6774 TCP_QUEUE_OOSEQ breaks compilation when
1129 2009-04-09 Kieran Mansley (patch from Roy Lee <roylee17>)
1130 * tcp.h: Patch#6802 Add do-while-clauses to those function like
1133 2009-03-31 Kieran Mansley
1134 * tcp.c, tcp_in.c, tcp_out.c, tcp.h, opt.h: Rework the way window
1135 updates are calculated and sent (BUG20515)
1137 * tcp_in.c: cope with SYN packets received during established states,
1138 and retransmission of initial SYN.
1140 * tcp_out.c: set push bit correctly when tcp segments are merged
1142 2009-03-27 Kieran Mansley
1143 * tcp_out.c set window correctly on probes (correcting change made
1146 2009-03-26 Kieran Mansley
1147 * tcp.c, tcp_in.c, tcp.h: add tcp_abandon() to cope with dropping
1148 connections where no reset required (bug #25622)
1150 * tcp_out.c: set TCP_ACK flag on keepalive and zero window probes
1153 2009-02-18 Simon Goldschmidt (Jonathan Larmour and Bill Auerbach)
1154 * ip_frag.c: patch #6528: the buffer used for IP_FRAG_USES_STATIC_BUF could be
1155 too small depending on MEM_ALIGNMENT
1157 2009-02-16 Simon Goldschmidt
1158 * sockets.h/.c, api_*.h/.c: fixed arguments of socket functions to match the standard;
1159 converted size argument of netconn_write to 'size_t'
1161 2009-02-16 Simon Goldschmidt
1162 * tcp.h, tcp.c: fixed bug #24440: TCP connection close problem on 64-bit host
1163 by moving accept callback function pointer to TCP_PCB_COMMON
1165 2009-02-12 Simon Goldschmidt
1166 * dhcp.c: fixed bug #25345 (DHCPDECLINE is sent with "Maximum message size"
1169 2009-02-11 Simon Goldschmidt
1170 * dhcp.c: fixed bug #24480 (releasing old udp_pdb and pbuf in dhcp_start)
1172 2009-02-11 Simon Goldschmidt
1173 * opt.h, api_msg.c: added configurable default valud for netconn->recv_bufsize:
1174 RECV_BUFSIZE_DEFAULT (fixes bug #23726: pbuf pool exhaustion on slow recv())
1176 2009-02-10 Simon Goldschmidt
1177 * tcp.c: fixed bug #25467: Listen backlog is not reset on timeout in SYN_RCVD:
1178 Accepts_pending is decrease on a corresponding listen pcb when a connection
1179 in state SYN_RCVD is close.
1181 2009-01-28 Jonathan Larmour
1182 * pbuf.c: reclaim pbufs from TCP out-of-sequence segments if we run
1185 2008-12-19 Simon Goldschmidt
1186 * many files: patch #6699: fixed some warnings on platform where sizeof(int) == 2
1188 2008-12-10 Tamas Somogyi, Frédéric Bernon
1189 * sockets.c: fixed bug #25051: lwip_recvfrom problem with udp: fromaddr and
1190 port uses deleted netbuf.
1192 2008-10-18 Simon Goldschmidt
1193 * tcp_in.c: fixed bug ##24596: Vulnerability on faulty TCP options length
1196 2008-10-15 Simon Goldschmidt
1197 * ip_frag.c: fixed bug #24517: IP reassembly crashes on unaligned IP headers
1198 by packing the struct ip_reass_helper.
1200 2008-10-03 David Woodhouse, Jonathan Larmour
1201 * etharp.c (etharp_arp_input): Fix type aliasing problem copying ip address.
1203 2008-10-02 Jonathan Larmour
1204 * dns.c: Hard-code structure sizes, to avoid issues on some compilers where
1205 padding is included.
1207 2008-09-30 Jonathan Larmour
1208 * sockets.c (lwip_accept): check addr isn't NULL. If it's valid, do an
1209 assertion check that addrlen isn't NULL.
1211 2008-09-30 Jonathan Larmour
1212 * tcp.c: Fix bug #24227, wrong error message in tcp_bind.
1214 2008-08-26 Simon Goldschmidt
1215 * inet.h, ip_addr.h: fixed bug #24132: Cross-dependency between ip_addr.h and
1216 inet.h -> moved declaration of struct in_addr from ip_addr.h to inet.h
1218 2008-08-14 Simon Goldschmidt
1219 * api_msg.c: fixed bug #23847: do_close_internal references freed memory (when
1220 tcp_close returns != ERR_OK)
1222 2008-07-08 Frédéric Bernon
1223 * stats.h: Fix some build bugs introduced with patch #6483 (missing some parameters
1224 in macros, mainly if MEM_STATS=0 and MEMP_STATS=0).
1226 2008-06-24 Jonathan Larmour
1227 * tcp_in.c: Fix for bug #23693 as suggested by Art R. Ensure cseg is unused
1228 if tcp_seg_copy fails.
1230 2008-06-17 Simon Goldschmidt
1231 * inet_chksum.c: Checked in some ideas of patch #6460 (loop optimizations)
1232 and created defines for swapping bytes and folding u32 to u16.
1234 2008-05-30 Kieran Mansley
1235 * tcp_in.c Remove redundant "if" statement, and use real rcv_wnd
1236 rather than rcv_ann_wnd when deciding if packets are in-window.
1237 Contributed by <arasmussen@consultant.datasys.swri.edu>
1239 2008-05-30 Kieran Mansley
1240 * mem.h: Fix BUG#23254. Change macro definition of mem_* to allow
1241 passing as function pointers when MEM_LIBC_MALLOC is defined.
1243 2008-05-09 Jonathan Larmour
1244 * err.h, err.c, sockets.c: Fix bug #23119: Reorder timeout error code to
1245 stop it being treated as a fatal error.
1247 2008-04-15 Simon Goldschmidt
1248 * dhcp.c: fixed bug #22804: dhcp_stop doesn't clear NETIF_FLAG_DHCP
1251 2008-03-27 Simon Goldschmidt
1252 * mem.c, tcpip.c, tcpip.h, opt.h: fixed bug #21433 (Calling mem_free/pbuf_free
1253 from interrupt context isn't safe): set LWIP_USE_HEAP_FROM_INTERRUPT to 1
1254 in lwipopts.h or use pbuf_free_callback(p)/mem_free_callback(m) to free pbufs
1255 or heap memory from interrupt context
1257 2008-03-26 Simon Goldschmidt
1258 * tcp_in.c, tcp.c: fixed bug #22249: division by zero could occur if a remote
1259 host sent a zero mss as TCP option.
1266 2008-03-10 Jonathan Larmour
1267 * inet_chksum.c: Allow choice of one of the sample algorithms to be
1268 made from lwipopts.h. Fix comment on how to override LWIP_CHKSUM.
1270 2008-01-22 Frédéric Bernon
1271 * tcp.c, tcp_in.c, tcp.h, opt.h: Rename LWIP_CALCULATE_EFF_SEND_MSS in
1272 TCP_CALCULATE_EFF_SEND_MSS to have coherent TCP options names.
1274 2008-01-14 Frédéric Bernon
1275 * rawapi.txt, api_msg.c, tcp.c, tcp_in.c, tcp.h: changes for task #7675 "Enable
1276 to refuse data on a TCP_EVENT_RECV call". Important, behavior changes for the
1277 tcp_recv callback (see rawapi.txt).
1279 2008-01-14 Frédéric Bernon, Marc Chaland
1280 * ip.c: Integrate patch #6369" ip_input : checking before realloc".
1282 2008-01-12 Frédéric Bernon
1283 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
1284 netconn::sem per netconn::op_completed like suggested for the task #7490
1285 "Add return value to sys_mbox_post".
1287 2008-01-12 Frédéric Bernon
1288 * api_msg.c, opt.h: replace DEFAULT_RECVMBOX_SIZE per DEFAULT_TCP_RECVMBOX_SIZE,
1289 DEFAULT_UDP_RECVMBOX_SIZE and DEFAULT_RAW_RECVMBOX_SIZE (to optimize queues
1290 sizes), like suggested for the task #7490 "Add return value to sys_mbox_post".
1292 2008-01-10 Frédéric Bernon
1293 * tcpip.h, tcpip.c: add tcpip_callback_with_block function for the task #7490
1294 "Add return value to sys_mbox_post". tcpip_callback is always defined as
1295 "blocking" ("block" parameter = 1).
1297 2008-01-10 Frédéric Bernon
1298 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
1299 netconn::mbox (sys_mbox_t) per netconn::sem (sys_sem_t) for the task #7490
1300 "Add return value to sys_mbox_post".
1302 2008-01-05 Frédéric Bernon
1303 * sys_arch.txt, api.h, api_lib.c, api_msg.h, api_msg.c, tcpip.c, sys.h, opt.h:
1304 Introduce changes for task #7490 "Add return value to sys_mbox_post" with some
1305 modifications in the sys_mbox api: sys_mbox_new take a "size" parameters which
1306 indicate the number of pointers query by the mailbox. There is three defines
1307 in opt.h to indicate sizes for tcpip::mbox, netconn::recvmbox, and for the
1308 netconn::acceptmbox. Port maintainers, you can decide to just add this new
1309 parameter in your implementation, but to ignore it to keep the previous behavior.
1310 The new sys_mbox_trypost function return a value to know if the mailbox is
1311 full or if the message is posted. Take a look to sys_arch.txt for more details.
1312 This new function is used in tcpip_input (so, can be called in an interrupt
1313 context since the function is not blocking), and in recv_udp and recv_raw.
1315 2008-01-04 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
1316 * rawapi.txt, api.h, api_lib.c, api_msg.h, api_msg.c, sockets.c, tcp.h, tcp.c,
1317 tcp_in.c, init.c, opt.h: rename backlog options with TCP_ prefix, limit the
1318 "backlog" parameter in an u8_t, 0 is interpreted as "smallest queue", add
1319 documentation in the rawapi.txt file.
1321 2007-12-31 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
1322 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Add TCP persist timer
1324 2007-12-31 Frédéric Bernon, Luca Ceresoli
1325 * autoip.c, etharp.c: ip_addr.h: Integrate patch #6348: "Broadcast ARP packets
1326 in autoip". The change in etharp_raw could be removed, since all calls to
1327 etharp_raw use ethbroadcast for the "ethdst_addr" parameter. But it could be
1328 wrong in the future.
1330 2007-12-30 Frédéric Bernon, Tom Evans
1331 * ip.c: Fix bug #21846 "LwIP doesn't appear to perform any IP Source Address
1332 Filtering" reported by Tom Evans.
1334 2007-12-21 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
1335 * tcp.h, opt.h, api.h, api_msg.h, tcp.c, tcp_in.c, api_lib.c, api_msg.c,
1336 sockets.c, init.c: task #7252: Implement TCP listen backlog: Warning: raw API
1337 applications have to call 'tcp_accepted(pcb)' in their accept callback to
1338 keep accepting new connections.
1340 2007-12-13 Frédéric Bernon
1341 * api_msg.c, err.h, err.c, sockets.c, dns.c, dns.h: replace "enum dns_result"
1342 by err_t type. Add a new err_t code "ERR_INPROGRESS".
1344 2007-12-12 Frédéric Bernon
1345 * dns.h, dns.c, opt.h: move DNS options to the "right" place. Most visibles
1346 are the one which have ram usage.
1348 2007-12-05 Frédéric Bernon
1349 * netdb.c: add a LWIP_DNS_API_HOSTENT_STORAGE option to decide to use a static
1350 set of variables (=0) or a local one (=1). In this last case, your port should
1351 provide a function "struct hostent* sys_thread_hostent( struct hostent* h)"
1352 which have to do a copy of "h" and return a pointer ont the "per-thread" copy.
1354 2007-12-03 Simon Goldschmidt
1355 * ip.c: ip_input: check if a packet is for inp first before checking all other
1356 netifs on netif_list (speeds up packet receiving in most cases)
1358 2007-11-30 Simon Goldschmidt
1359 * udp.c, raw.c: task #7497: Sort lists (pcb, netif, ...) for faster access
1360 UDP: move a (connected) pcb selected for input to the front of the list of
1361 pcbs so that it is found faster next time. Same for RAW pcbs that have eaten
1364 2007-11-28 Simon Goldschmidt
1365 * etharp.c, stats.c, stats.h, opt.h: Introduced ETHARP_STATS
1367 2007-11-25 Simon Goldschmidt
1368 * dhcp.c: dhcp_unfold_reply() uses pbuf_copy_partial instead of its own copy
1371 2007-11-24 Simon Goldschmidt
1372 * netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c
1373 to the new file netdb.c; included lwip_getaddrinfo.
1375 2007-11-21 Simon Goldschmidt
1376 * tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
1377 based on the MTU of the netif used to send. Enabled by default. Disable by
1378 setting LWIP_CALCULATE_EFF_SEND_MSS to 0. This fixes bug #21492.
1380 2007-11-19 Frédéric Bernon
1381 * api_msg.c, dns.h, dns.c: Implement DNS_DOES_NAME_CHECK option (check if name
1382 received match the name query), implement DNS_USES_STATIC_BUF (the place where
1383 copy dns payload to parse the response), return an error if there is no place
1384 for a new query, and fix some minor problems.
1386 2007-11-16 Simon Goldschmidt
1387 * new files: ipv4/inet.c, ipv4/inet_chksum.c, ipv6/inet6.c
1388 removed files: core/inet.c, core/inet6.c
1389 Moved inet files into ipv4/ipv6 directory; splitted inet.c/inet.h into
1390 inet and chksum part; changed includes in all lwIP files as appropriate
1392 2007-11-16 Simon Goldschmidt
1393 * api.h, api_msg.h, api_lib.c, api_msg.c, socket.h, socket.c: Added sequential
1394 dns resolver function for netconn api (netconn_gethostbyname) and socket api
1395 (gethostbyname/gethostbyname_r).
1397 2007-11-15 Jim Pettinato, Frédéric Bernon
1398 * opt.h, init.c, tcpip.c, dhcp.c, dns.h, dns.c: add DNS client for simple name
1399 requests with RAW api interface. Initialization is done in lwip_init() with
1400 build time options. DNS timer is added in tcpip_thread context. DHCP can set
1401 DNS server ip addresses when options are received. You need to set LWIP_DNS=1
1402 in your lwipopts.h file (LWIP_DNS=0 in opt.h). DNS_DEBUG can be set to get
1403 some traces with LWIP_DEBUGF. Sanity check have been added. There is a "todo"
1404 list with points to improve.
1406 2007-11-06 Simon Goldschmidt
1407 * opt.h, mib2.c: Patch #6215: added ifAdminStatus write support (if explicitly
1408 enabled by defining SNMP_SAFE_REQUESTS to 0); added code to check link status
1409 for ifOperStatus if LWIP_NETIF_LINK_CALLBACK is defined.
1411 2007-11-06 Simon Goldschmidt
1412 * api.h, api_msg.h and dependent files: Task #7410: Removed the need to include
1413 core header files in api.h (ip/tcp/udp/raw.h) to hide the internal
1414 implementation from netconn api applications.
1416 2007-11-03 Frédéric Bernon
1417 * api.h, api_lib.c, api_msg.c, sockets.c, opt.h: add SO_RCVBUF option for UDP &
1418 RAW netconn. You need to set LWIP_SO_RCVBUF=1 in your lwipopts.h (it's disabled
1419 by default). Netconn API users can use the netconn_recv_bufsize macro to access
1420 it. This is a first release which have to be improve for TCP. Note it used the
1421 netconn::recv_avail which need to be more "thread-safe" (note there is already
1422 the problem for FIONREAD with lwip_ioctl/ioctlsocket).
1424 2007-11-01 Frédéric Bernon, Marc Chaland
1425 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, tcp.h, tcp_out.c:
1426 Integrate "patch #6250 : MSG_MORE flag for send". MSG_MORE is used at socket api
1427 layer, NETCONN_MORE at netconn api layer, and TCP_WRITE_FLAG_MORE at raw api
1428 layer. This option enable to delayed TCP PUSH flag on multiple "write" calls.
1429 Note that previous "copy" parameter for "write" APIs is now called "apiflags".
1431 2007-10-24 Frédéric Bernon
1432 * api.h, api_lib.c, api_msg.c: Add macro API_EVENT in the same spirit than
1433 TCP_EVENT_xxx macros to get a code more readable. It could also help to remove
1434 some code (like we have talk in "patch #5919 : Create compile switch to remove
1435 select code"), but it could be done later.
1437 2007-10-08 Simon Goldschmidt
1438 * many files: Changed initialization: many init functions are not needed any
1439 more since we now rely on the compiler initializing global and static
1442 2007-10-06 Simon Goldschmidt
1443 * ip_frag.c, memp.c, mib2.c, ip_frag.h, memp_std.h, opt.h: Changed IP_REASSEMBLY
1444 to enqueue the received pbufs so that multiple packets can be reassembled
1445 simultaneously and no static reassembly buffer is needed.
1447 2007-10-05 Simon Goldschmidt
1448 * tcpip.c, etharp.h, etharp.c: moved ethernet_input from tcpip.c to etharp.c so
1449 all netifs (or ports) can use it.
1451 2007-10-05 Frédéric Bernon
1452 * netifapi.h, netifapi.c: add function netifapi_netif_set_default. Change the
1453 common function to reduce a little bit the footprint (for all functions using
1454 only the "netif" parameter).
1456 2007-10-03 Frédéric Bernon
1457 * netifapi.h, netifapi.c: add functions netifapi_netif_set_up, netifapi_netif_set_down,
1458 netifapi_autoip_start and netifapi_autoip_stop. Use a common function to reduce
1459 a little bit the footprint (for all functions using only the "netif" parameter).
1461 2007-09-15 Frédéric Bernon
1462 * udp.h, udp.c, sockets.c: Changes for "#20503 IGMP Improvement". Add IP_MULTICAST_IF
1463 option in socket API, and a new field "multicast_ip" in "struct udp_pcb" (for
1464 netconn and raw API users), only if LWIP_IGMP=1. Add getsockopt processing for
1465 IP_MULTICAST_TTL and IP_MULTICAST_IF.
1467 2007-09-10 Frédéric Bernon
1468 * snmp.h, mib2.c: enable to remove SNMP timer (which consumne several cycles
1469 even when it's not necessary). snmp_agent.txt tell to call snmp_inc_sysuptime()
1470 each 10ms (but, it's intrusive if you use sys_timeout feature). Now, you can
1471 decide to call snmp_add_sysuptime(100) each 1000ms (which is bigger "step", but
1472 call to a lower frequency). Or, you can decide to not call snmp_inc_sysuptime()
1473 or snmp_add_sysuptime(), and to define the SNMP_GET_SYSUPTIME(sysuptime) macro.
1474 This one is undefined by default in mib2.c. SNMP_GET_SYSUPTIME is called inside
1475 snmp_get_sysuptime(u32_t *value), and enable to change "sysuptime" value only
1476 when it's queried (any direct call to "sysuptime" is changed by a call to
1477 snmp_get_sysuptime).
1479 2007-09-09 Frédéric Bernon, Bill Florac
1480 * igmp.h, igmp.c, netif.h, netif.c, ip.c: To enable to have interfaces with IGMP,
1481 and others without it, there is a new NETIF_FLAG_IGMP flag to set in netif->flags
1482 if you want IGMP on an interface. igmp_stop() is now called inside netif_remove().
1483 igmp_report_groups() is now called inside netif_set_link_up() (need to have
1484 LWIP_NETIF_LINK_CALLBACK=1) to resend reports once the link is up (avoid to wait
1485 the next query message to receive the matching multicast streams).
1487 2007-09-08 Frédéric Bernon
1488 * sockets.c, ip.h, api.h, tcp.h: declare a "struct ip_pcb" which only contains
1489 IP_PCB. Add in the netconn's "pcb" union a "struct ip_pcb *ip;" (no size change).
1490 Use this new field to access to common pcb fields (ttl, tos, so_options, etc...).
1491 Enable to access to these fields with LWIP_TCP=0.
1493 2007-09-05 Frédéric Bernon
1494 * udp.c, ipv4/icmp.c, ipv4/ip.c, ipv6/icmp.c, ipv6/ip6.c, ipv4/icmp.h,
1495 ipv6/icmp.h, opt.h: Integrate "task #7272 : LWIP_ICMP option". The new option
1496 LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default).
1497 Be careful, disabling ICMP make your product non-compliant to RFC1122, but
1498 help to reduce footprint, and to reduce "visibility" on the Internet.
1500 2007-09-05 Frédéric Bernon, Bill Florac
1501 * opt.h, sys.h, tcpip.c, slipif.c, ppp.c, sys_arch.txt: Change parameters list
1502 for sys_thread_new (see "task #7252 : Create sys_thread_new_ex()"). Two new
1503 parameters have to be provided: a task name, and a task stack size. For this
1504 one, since it's platform dependant, you could define the best one for you in
1505 your lwipopts.h. For port maintainers, you can just add these new parameters
1506 in your sys_arch.c file, and but it's not mandatory, use them in your OS
1509 2007-09-05 Frédéric Bernon
1510 * inet.c, autoip.c, msg_in.c, msg_out.c, init.c: Move some build time checkings
1511 inside init.c for task #7142 "Sanity check user-configurable values".
1513 2007-09-04 Frédéric Bernon, Bill Florac
1514 * igmp.h, igmp.c, memp_std.h, memp.c, init.c, opt.h: Replace mem_malloc call by
1515 memp_malloc, and use a new MEMP_NUM_IGMP_GROUP option (see opt.h to define the
1516 value). It will avoid potential fragmentation problems, use a counter to know
1517 how many times a group is used on an netif, and free it when all applications
1518 leave it. MEMP_NUM_IGMP_GROUP got 8 as default value (and init.c got a sanity
1519 check if LWIP_IGMP!=0).
1521 2007-09-03 Frédéric Bernon
1522 * igmp.h, igmp.c, sockets.c, api_msg.c: Changes for "#20503 IGMP Improvement".
1523 Initialize igmp_mac_filter to NULL in netif_add (this field should be set in
1524 the netif's "init" function). Use the "imr_interface" field (for socket layer)
1525 and/or the "interface" field (for netconn layer), for join/leave operations.
1526 The igmp_join/leavegroup first parameter change from a netif to an ipaddr.
1527 This field could be a netif's ipaddr, or "any" (same meaning than ip_addr_isany).
1529 2007-08-30 Frédéric Bernon
1530 * Add netbuf.h, netbuf.c, Change api.h, api_lib.c: #7249 "Split netbuf functions
1531 from api/api_lib". Now netbuf API is independant of netconn, and can be used
1532 with other API (application based on raw API, or future "socket2" API). Ports
1533 maintainers just have to add src/api/netbuf.c in their makefile/projects.
1535 2007-08-30 Frédéric Bernon, Jonathan Larmour
1536 * init.c: Add first version of lwip_sanity_check for task #7142 "Sanity check
1537 user-configurable values".
1539 2007-08-29 Frédéric Bernon
1540 * igmp.h, igmp.c, tcpip.c, init.c, netif.c: change igmp_init and add igmp_start.
1541 igmp_start is call inside netif_add. Now, igmp initialization is in the same
1542 spirit than the others modules. Modify some IGMP debug traces.
1544 2007-08-29 Frédéric Bernon
1545 * Add init.h, init.c, Change opt.h, tcpip.c: Task #7213 "Add a lwip_init function"
1546 Add lwip_init function to regroup all modules initializations, and to provide
1547 a place to add code for task #7142 "Sanity check user-configurable values".
1548 Ports maintainers should remove direct initializations calls from their code,
1549 and add init.c in their makefiles. Note that lwip_init() function is called
1550 inside tcpip_init, but can also be used by raw api users since all calls are
1551 disabled when matching options are disabled. Also note that their is new options
1552 in opt.h, you should configure in your lwipopts.h (they are enabled per default).
1554 2007-08-26 Marc Boucher
1555 * api_msg.c: do_close_internal(): Reset the callbacks and arg (conn) to NULL
1556 since they can under certain circumstances be called with an invalid conn
1557 pointer after the connection has been closed (and conn has been freed).
1559 2007-08-25 Frédéric Bernon (Artem Migaev's Patch)
1560 * netif.h, netif.c: Integrate "patch #6163 : Function to check if link layer is up".
1561 Add a netif_is_link_up() function if LWIP_NETIF_LINK_CALLBACK option is set.
1563 2007-08-22 Frédéric Bernon
1564 * netif.h, netif.c, opt.h: Rename LWIP_NETIF_CALLBACK in LWIP_NETIF_STATUS_CALLBACK
1565 to be coherent with new LWIP_NETIF_LINK_CALLBACK option before next release.
1567 2007-08-22 Frédéric Bernon
1568 * tcpip.h, tcpip.c, ethernetif.c, opt.h: remove options ETHARP_TCPIP_INPUT &
1569 ETHARP_TCPIP_ETHINPUT, now, only "ethinput" code is supported, even if the
1570 name is tcpip_input (we keep the name of 1.2.0 function).
1572 2007-08-17 Jared Grubb
1573 * memp_std.h, memp.h, memp.c, mem.c, stats.c: (Task #7136) Centralize mempool
1574 settings into new memp_std.h and optional user file lwippools.h. This adds
1575 more dynamic mempools, and allows the user to create an arbitrary number of
1576 mempools for mem_malloc.
1578 2007-08-16 Marc Boucher
1579 * api_msg.c: Initialize newconn->state to NETCONN_NONE in accept_function;
1580 otherwise it was left to NETCONN_CLOSE and sent_tcp() could prematurely
1581 close the connection.
1583 2007-08-16 Marc Boucher
1584 * sockets.c: lwip_accept(): check netconn_peer() error return.
1586 2007-08-16 Marc Boucher
1587 * mem.c, mem.h: Added mem_calloc().
1589 2007-08-16 Marc Boucher
1590 * tcpip.c, tcpip.h memp.c, memp.h: Added distinct memp (MEMP_TCPIP_MSG_INPKT)
1591 for input packets to prevent floods from consuming all of MEMP_TCPIP_MSG
1592 and starving other message types.
1593 Renamed MEMP_TCPIP_MSG to MEMP_TCPIP_MSG_API
1595 2007-08-16 Marc Boucher
1596 * pbuf.c, pbuf.h, etharp.c, tcp_in.c, sockets.c: Split pbuf flags in pbuf
1597 type and flgs (later renamed to flags).
1598 Use enum pbuf_flag as pbuf_type. Renumber PBUF_FLAG_*.
1599 Improved lwip_recvfrom(). TCP push now propagated.
1601 2007-08-16 Marc Boucher
1602 * ethernetif.c, contrib/ports/various: ethbroadcast now a shared global
1605 2007-08-16 Marc Boucher
1606 * ppp_oe.c ppp_oe.h, auth.c chap.c fsm.c lcp.c ppp.c ppp.h,
1607 etharp.c ethernetif.c, etharp.h, opt.h tcpip.h, tcpip.c:
1608 Added PPPoE support and various PPP improvements.
1610 2007-07-25 Simon Goldschmidt
1611 * api_lib.c, ip_frag.c, pbuf.c, api.h, pbuf.h: Introduced pbuf_copy_partial,
1612 making netbuf_copy_partial use this function.
1614 2007-07-25 Simon Goldschmidt
1615 * tcp_in.c: Fix bug #20506: Slow start / initial congestion window starts with
1616 2 * mss (instead of 1 * mss previously) to comply with some newer RFCs and
1619 2007-07-13 Jared Grubb (integrated by Frédéric Bernon)
1620 * opt.h, netif.h, netif.c, ethernetif.c: Add new configuration option to add
1621 a link callback in the netif struct, and functions to handle it. Be carefull
1622 for port maintainers to add the NETIF_FLAG_LINK_UP flag (like in ethernetif.c)
1623 if you want to be sure to be compatible with future changes...
1625 2007-06-30 Frédéric Bernon
1626 * sockets.h, sockets.c: Implement MSG_PEEK flag for recv/recvfrom functions.
1628 2007-06-21 Simon Goldschmidt
1629 * etharp.h, etharp.c: Combined etharp_request with etharp_raw for both
1630 LWIP_AUTOIP =0 and =1 to remove redundant code.
1632 2007-06-21 Simon Goldschmidt
1633 * mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option
1634 MEM_USE_POOLS to use 4 pools with different sized elements instead of a
1635 heap. This both prevents memory fragmentation and gives a higher speed
1636 at the cost of more memory consumption. Turned off by default.
1638 2007-06-21 Simon Goldschmidt
1639 * api_lib.c, api_msg.c, api.h, api_msg.h: Converted the length argument of
1640 netconn_write (and therefore also api_msg_msg.msg.w.len) from u16_t into
1641 int to be able to send a bigger buffer than 64K with one time (mainly
1642 used from lwip_send).
1644 2007-06-21 Simon Goldschmidt
1645 * tcp.h, api_msg.c: Moved the nagle algorithm from netconn_write/do_write
1646 into a define (tcp_output_nagle) in tcp.h to provide it to raw api users, too.
1648 2007-06-21 Simon Goldschmidt
1649 * api.h, api_lib.c, api_msg.c: Fixed bug #20021: Moved sendbuf-processing in
1650 netconn_write from api_lib.c to api_msg.c to also prevent multiple context-
1651 changes on low memory or empty send-buffer.
1653 2007-06-18 Simon Goldschmidt
1654 * etharp.c, etharp.h: Changed etharp to use a defined hardware address length
1655 of 6 to avoid loading netif->hwaddr_len every time (since this file is only
1656 used for ethernet and struct eth_addr already had a defined length of 6).
1658 2007-06-17 Simon Goldschmidt
1659 * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets
1660 to disable UDP checksum generation on transmit.
1662 2007-06-13 Frédéric Bernon, Simon Goldschmidt
1663 * debug.h, api_msg.c: change LWIP_ERROR to use it to check errors like invalid
1664 pointers or parameters, and let the possibility to redefined it in cc.h. Use
1665 this macro to check "conn" parameter in api_msg.c functions.
1667 2007-06-11 Simon Goldschmidt
1668 * sockets.c, sockets.h: Added UDP lite support for sockets
1670 2007-06-10 Simon Goldschmidt
1671 * udp.h, opt.h, api_msg.c, ip.c, udp.c: Included switch LWIP_UDPLITE (enabled
1672 by default) to switch off UDP-Lite support if not needed (reduces udp.c code
1675 2007-06-09 Dominik Spies (integrated by Frédéric Bernon)
1676 * autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h:
1677 AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and
1678 LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt
1679 (see TODO mark in the source code).
1681 2007-06-09 Simon Goldschmidt
1682 * etharp.h, etharp.c, ethernetif.c: Modified order of parameters for
1683 etharp_output() to match netif->output so etharp_output() can be used
1684 directly as netif->output to save one function call.
1686 2007-06-08 Simon Goldschmidt
1687 * netif.h, ethernetif.c, slipif.c, loopif.c: Added define
1688 NETIF_INIT_SNMP(netif, type, speed) to initialize per-netif snmp variables,
1689 added initialization of those to ethernetif, slipif and loopif.
1691 2007-05-18 Simon Goldschmidt
1692 * opt.h, ip_frag.c, ip_frag.h, ip.c: Added option IP_FRAG_USES_STATIC_BUF
1693 (defaulting to off for now) that can be set to 0 to send fragmented
1694 packets by passing PBUF_REFs down the stack.
1696 2007-05-23 Frédéric Bernon
1697 * api_lib.c: Implement SO_RCVTIMEO for accept and recv on TCP
1698 connections, such present in patch #5959.
1700 2007-05-23 Frédéric Bernon
1701 * api.h, api_lib.c, api_msg.c, sockets.c: group the different NETCONN_UDPxxx
1702 code in only one part...
1704 2007-05-18 Simon Goldschmidt
1705 * opt.h, memp.h, memp.c: Added option MEMP_OVERFLOW_CHECK to check for memp
1706 elements to overflow. This is achieved by adding some bytes before and after
1707 each pool element (increasing their size, of course), filling them with a
1708 prominent value and checking them on freeing the element.
1709 Set it to 2 to also check every element in every pool each time memp_malloc()
1710 or memp_free() is called (slower but more helpful).
1712 2007-05-10 Simon Goldschmidt
1713 * opt.h, memp.h, memp.c, pbuf.c (see task #6831): use a new memp pool for
1714 PBUF_POOL pbufs instead of the old pool implementation in pbuf.c to reduce
1717 2007-05-11 Frédéric Bernon
1718 * sockets.c, api_lib.c, api_msg.h, api_msg.c, netifapi.h, netifapi.c, tcpip.c:
1719 Include a function pointer instead of a table index in the message to reduce
1720 footprint. Disable some part of lwip_send and lwip_sendto if some options are
1721 not set (LWIP_TCP, LWIP_UDP, LWIP_RAW).
1723 2007-05-10 Simon Goldschmidt
1724 * *.h (except netif/ppp/*.h): Included patch #5448: include '#ifdef __cplusplus
1725 \ extern "C" {' in all header files. Now you can write your application using
1726 the lwIP stack in C++ and simply #include the core files. Note I have left
1727 out the netif/ppp/*h header files for now, since I don't know which files are
1728 included by applications and which are for internal use only.
1730 2007-05-09 Simon Goldschmidt
1731 * opt.h, *.c/*.h: Included patch #5920: Create define to override C-library
1732 memcpy. 2 Defines are created: MEMCPY() for normal memcpy, SMEMCPY() for
1733 situations where some compilers might inline the copy and save a function
1734 call. Also replaced all calls to memcpy() with calls to (S)MEMCPY().
1736 2007-05-08 Simon Goldschmidt
1737 * mem.h: If MEM_LIBC_MALLOC==1, allow the defines (e.g. mem_malloc() -> malloc())
1738 to be overriden in case the C-library malloc implementation is not protected
1739 against concurrent access.
1741 2007-05-04 Simon Goldschmidt (Atte Kojo)
1742 * etharp.c: Introduced fast one-entry-cache to speed up ARP lookup when sending
1743 multiple packets to the same host.
1745 2007-05-04 Frédéric Bernon, Jonathan Larmour
1746 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fix bug #19162 "lwip_sento: a possible
1747 to corrupt remote addr/port connection state". Reduce problems "not enought memory" with
1748 netbuf (if we receive lot of datagrams). Improve lwip_sendto (only one exchange between
1749 sockets api and api_msg which run in tcpip_thread context). Add netconn_sento function.
1750 Warning, if you directly access to "fromaddr" & "fromport" field from netbuf struct,
1751 these fields are now renamed "addr" & "port".
1753 2007-04-11 Jonathan Larmour
1754 * sys.h, api_lib.c: Provide new sys_mbox_tryfetch function. Require ports to provide new
1755 sys_arch_mbox_tryfetch function to get a message if one is there, otherwise return
1756 with SYS_MBOX_EMPTY. sys_arch_mbox_tryfetch can be implemented as a function-like macro
1757 by the port in sys_arch.h if desired.
1759 2007-04-06 Frédéric Bernon, Simon Goldschmidt
1760 * opt.h, tcpip.h, tcpip.c, netifapi.h, netifapi.c: New configuration option LWIP_NETIF_API
1761 allow to use thread-safe functions to add/remove netif in list, and to start/stop dhcp
1762 clients, using new functions from netifapi.h. Disable as default (no port change to do).
1764 2007-04-05 Frédéric Bernon
1765 * sockets.c: remplace ENOBUFS errors on alloc_socket by ENFILE to be more BSD compliant.
1767 2007-04-04 Simon Goldschmidt
1768 * arch.h, api_msg.c, dhcp.c, msg_in.c, sockets.c: Introduced #define LWIP_UNUSED_ARG(x)
1769 use this for and architecture-independent form to tell the compiler you intentionally
1770 are not using this variable. Can be overriden in cc.h.
1772 2007-03-28 Frédéric Bernon
1773 * opt.h, netif.h, dhcp.h, dhcp.c: New configuration option LWIP_NETIF_HOSTNAME allow to
1774 define a hostname in netif struct (this is just a pointer, so, you can use a hardcoded
1775 string, point on one of your's ethernetif field, or alloc a string you will free yourself).
1776 It will be used by DHCP to register a client hostname, but can also be use when you call
1779 2007-03-28 Frédéric Bernon
1780 * netif.h, netif.c: A new NETIF_FLAG_ETHARP flag is defined in netif.h, to allow to
1781 initialize a network interface's flag with. It tell this interface is an ethernet
1782 device, and we can use ARP with it to do a "gratuitous ARP" (RFC 3220 "IP Mobility
1783 Support for IPv4" section 4.6) when interface is "up" with netif_set_up().
1785 2007-03-26 Frédéric Bernon, Jonathan Larmour
1786 * opt.h, tcpip.c: New configuration option LWIP_ARP allow to disable ARP init at build
1787 time if you only use PPP or SLIP. The default is enable. Note we don't have to call
1788 etharp_init in your port's initilization sequence if you use tcpip.c, because this call
1789 is done in tcpip_init function.
1791 2007-03-22 Frédéric Bernon
1792 * stats.h, stats.c, msg_in.c: Stats counters can be change to u32_t if necessary with the
1793 new option LWIP_STATS_LARGE. If you need this option, define LWIP_STATS_LARGE to 1 in
1794 your lwipopts.h. More, unused counters are not defined in the stats structs, and not
1795 display by stats_display(). Note that some options (SYS_STATS and RAW_STATS) are defined
1796 but never used. Fix msg_in.c with the correct #if test for a stat display.
1798 2007-03-21 Kieran Mansley
1799 * netif.c, netif.h: Apply patch#4197 with some changes (originator: rireland@hmgsl.com).
1800 Provides callback on netif up/down state change.
1802 2007-03-11 Frédéric Bernon, Mace Gael, Steve Reynolds
1803 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, igmp.h, igmp.c,
1804 ip.c, netif.h, tcpip.c, opt.h:
1805 New configuration option LWIP_IGMP to enable IGMP processing. Based on only one
1806 filter per all network interfaces. Declare a new function in netif to enable to
1807 control the MAC filter (to reduce lwIP traffic processing).
1809 2007-03-11 Frédéric Bernon
1810 * tcp.h, tcp.c, sockets.c, tcp_out.c, tcp_in.c, opt.h: Keepalive values can
1811 be configured at run time with LWIP_TCP_KEEPALIVE, but don't change this
1812 unless you know what you're doing (default are RFC1122 compliant). Note
1813 that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set in seconds.
1815 2007-03-08 Frédéric Bernon
1816 * tcp.h: Keepalive values can be configured at compile time, but don't change
1817 this unless you know what you're doing (default are RFC1122 compliant).
1819 2007-03-08 Frédéric Bernon
1820 * sockets.c, api.h, api_lib.c, tcpip.c, sys.h, sys.c, err.c, opt.h:
1821 Implement LWIP_SO_RCVTIMEO configuration option to enable/disable SO_RCVTIMEO
1822 on UDP sockets/netconn.
1824 2007-03-08 Simon Goldschmidt
1825 * snmp_msg.h, msg_in.c: SNMP UDP ports can be configured at compile time.
1827 2007-03-06 Frédéric Bernon
1828 * api.h, api_lib.c, sockets.h, sockets.c, tcpip.c, sys.h, sys.c, err.h:
1829 Implement SO_RCVTIMEO on UDP sockets/netconn.
1831 2007-02-28 Kieran Mansley (based on patch from Simon Goldschmidt)
1832 * api_lib.c, tcpip.c, memp.c, memp.h: make API msg structs allocated
1833 on the stack and remove the API msg type from memp
1835 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
1836 * sockets.h, sockets.c: Move socket initialization to new
1837 lwip_socket_init() function.
1838 NOTE: this changes the API with ports. Ports will have to be
1839 updated to call lwip_socket_init() now.
1841 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
1842 * api_lib.c: Use memcpy in netbuf_copy_partial.
1847 2008-03-17 Frédéric Bernon, Ed Kerekes
1848 * igmp.h, igmp.c: Fix bug #22613 "IGMP iphdr problem" (could have
1849 some problems to fill the IP header on some targets, use now the
1850 ip.h macros to do it).
1852 2008-03-13 Frédéric Bernon
1853 * sockets.c: Fix bug #22435 "lwip_recvfrom with TCP break;". Using
1854 (lwip_)recvfrom with valid "from" and "fromlen" parameters, on a
1855 TCP connection caused a crash. Note that using (lwip_)recvfrom
1856 like this is a bit slow and that using (lwip)getpeername is the
1857 good lwip way to do it (so, using recv is faster on tcp sockets).
1859 2008-03-12 Frédéric Bernon, Jonathan Larmour
1860 * api_msg.c, contrib/apps/ping.c: Fix bug #22530 "api_msg.c's
1861 recv_raw() does not consume data", and the ping sample (with
1862 LWIP_SOCKET=1, the code did the wrong supposition that lwip_recvfrom
1863 returned the IP payload, without the IP header).
1865 2008-03-04 Jonathan Larmour
1866 * mem.c, stats.c, mem.h: apply patch #6414 to avoid compiler errors
1867 and/or warnings on some systems where mem_size_t and size_t differ.
1868 * pbuf.c, ppp.c: Fix warnings on some systems with mem_malloc.
1870 2008-03-04 Kieran Mansley (contributions by others)
1871 * Numerous small compiler error/warning fixes from contributions to
1872 mailing list after 1.3.0 release candidate made.
1874 2008-01-25 Cui hengbin (integrated by Frédéric Bernon)
1875 * dns.c: Fix bug #22108 "DNS problem" caused by unaligned structures.
1877 2008-01-15 Kieran Mansley
1878 * tcp_out.c: BUG20511. Modify persist timer to start when we are
1879 prevented from sending by a small send window, not just a zero
1882 2008-01-09 Jonathan Larmour
1883 * opt.h, ip.c: Rename IP_OPTIONS define to IP_OPTIONS_ALLOWED to avoid
1884 conflict with Linux system headers.
1886 2008-01-06 Jonathan Larmour
1887 * dhcp.c: fix bug #19927: "DHCP NACK problem" by clearing any existing set IP
1888 address entirely on receiving a DHCPNAK, and restarting discovery.
1890 2007-12-21 Simon Goldschmidt
1891 * sys.h, api_lib.c, api_msg.c, sockets.c: fix bug #21698: "netconn->recv_avail
1892 is not protected" by using new macros for interlocked access to modify/test
1893 netconn->recv_avail.
1895 2007-12-20 Kieran Mansley (based on patch from Oleg Tyshev)
1896 * tcp_in.c: fix bug# 21535 (nrtx not reset correctly in SYN_SENT state)
1898 2007-12-20 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
1899 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: fix bug #20199 (better handling
1900 of silly window avoidance and prevent lwIP from shrinking the window)
1902 2007-12-04 Simon Goldschmidt
1903 * tcp.c, tcp_in.c: fix bug #21699 (segment leak in ooseq processing when last
1904 data packet was lost): add assert that all segment lists are empty in
1905 tcp_pcb_remove before setting pcb to CLOSED state; don't directly set CLOSED
1906 state from LAST_ACK in tcp_process
1908 2007-12-02 Simon Goldschmidt
1909 * sockets.h: fix bug #21654: exclude definition of struct timeval from #ifndef FD_SET
1910 If including <sys/time.h> for system-struct timeval, LWIP_TIMEVAL_PRIVATE now
1911 has to be set to 0 in lwipopts.h
1913 2007-12-02 Simon Goldschmidt
1914 * api_msg.c, api_lib.c: fix bug #21656 (recvmbox problem in netconn API): always
1915 allocate a recvmbox in netconn_new_with_proto_and_callback. For a tcp-listen
1916 netconn, this recvmbox is later freed and a new mbox is allocated for acceptmbox.
1917 This is a fix for thread-safety and allocates all items needed for a netconn
1918 when the netconn is created.
1920 2007-11-30 Simon Goldschmidt
1921 * udp.c: first attempt to fix bug #21655 (DHCP doesn't work reliably with multiple
1922 netifs): if LWIP_DHCP is enabled, UDP packets to DHCP_CLIENT_PORT are passed
1923 to netif->dhcp->pcb only (if that exists) and not to any other pcb for the same
1924 port (only solution to let UDP pcbs 'bind' to a netif instead of an IP address)
1926 2007-11-27 Simon Goldschmidt
1927 * ip.c: fixed bug #21643 (udp_send/raw_send don't fail if netif is down) by
1928 letting ip_route only use netifs that are up.
1930 2007-11-27 Simon Goldschmidt
1931 * err.h, api_lib.c, api_msg.c, sockets.c: Changed error handling: ERR_MEM, ERR_BUF
1932 and ERR_RTE are seen as non-fatal, all other errors are fatal. netconns and
1933 sockets block most operations once they have seen a fatal error.
1935 2007-11-27 Simon Goldschmidt
1936 * udp.h, udp.c, dhcp.c: Implemented new function udp_sendto_if which takes the
1937 netif to send as an argument (to be able to send on netifs that are down).
1939 2007-11-26 Simon Goldschmidt
1940 * tcp_in.c: Fixed bug #21582: pcb->acked accounting can be wrong when ACKs
1943 2007-11-21 Simon Goldschmidt
1944 * tcp.h, tcp_out.c, api_msg.c: Fixed bug #20287: tcp_output_nagle sends too early
1945 Fixed the nagle algorithm; nagle now also works for all raw API applications
1946 and has to be explicitly disabled with 'tcp_pcb->flags |= TF_NODELAY'
1948 2007-11-12 Frédéric Bernon
1949 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fixed bug #20900. Now, most
1950 of the netconn_peer and netconn_addr processing is done inside tcpip_thread
1951 context in do_getaddr.
1953 2007-11-10 Simon Goldschmidt
1954 * etharp.c: Fixed bug: assert fired when MEMP_ARP_QUEUE was empty (which can
1955 happen any time). Now the packet simply isn't enqueued when out of memory.
1957 2007-11-01 Simon Goldschmidt
1958 * tcp.c, tcp_in.c: Fixed bug #21494: The send mss (pcb->mss) is set to 536 (or
1959 TCP_MSS if that is smaller) as long as no MSS option is received from the
1962 2007-11-01 Simon Goldschmidt
1963 * tcp.h, tcp.c, tcp_in.c: Fixed bug #21491: The MSS option sent (with SYN)
1964 is now based on TCP_MSS instead of pcb->mss (on passive open now effectively
1965 sending our configured TCP_MSS instead of the one received).
1967 2007-11-01 Simon Goldschmidt
1968 * tcp_in.c: Fixed bug #21181: On active open, the initial congestion window was
1969 calculated based on the configured TCP_MSS, not on the MSS option received
1972 2007-10-09 Simon Goldschmidt
1973 * udp.c, inet.c, inet.h: Fixed UDPLite: send: Checksum was always generated too
1974 short and also was generated wrong if checksum coverage != tot_len;
1975 receive: checksum was calculated wrong if checksum coverage != tot_len
1977 2007-10-08 Simon Goldschmidt
1978 * mem.c: lfree was not updated in mem_realloc!
1980 2007-10-07 Frédéric Bernon
1981 * sockets.c, api.h, api_lib.c: First step to fix "bug #20900 : Potential
1982 crash error problem with netconn_peer & netconn_addr". VERY IMPORTANT:
1983 this change cause an API breakage for netconn_addr, since a parameter
1984 type change. Any compiler should cause an error without any changes in
1985 yours netconn_peer calls (so, it can't be a "silent change"). It also
1986 reduce a little bit the footprint for socket layer (lwip_getpeername &
1987 lwip_getsockname use now a common lwip_getaddrname function since
1988 netconn_peer & netconn_addr have the same parameters).
1990 2007-09-20 Simon Goldschmidt
1991 * tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state)
1992 by checking tcp_tw_pcbs also
1994 2007-09-19 Simon Goldschmidt
1995 * icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
1997 2007-09-15 Mike Kleshov
1998 * mem.c: Fixed bug #21077 (inaccuracy in calculation of lwip_stat.mem.used)
2000 2007-09-06 Frédéric Bernon
2001 * several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
2002 it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
2003 already include "lwip/arch.h"). Like that, default defines are provided by "lwip/arch.h"
2004 if they are not defined in cc.h, in the same spirit than "lwip/opt.h" for lwipopts.h.
2006 2007-08-30 Frédéric Bernon
2007 * igmp.h, igmp.c: Some changes to remove some redundant code, add some traces,
2008 and fix some coding style.
2010 2007-08-28 Frédéric Bernon
2011 * tcpip.c: Fix TCPIP_MSG_INPKT processing: now, tcpip_input can be used for any
2012 kind of packets. These packets are considered like Ethernet packets (payload
2013 pointing to ethhdr) if the netif got the NETIF_FLAG_ETHARP flag. Else, packets
2014 are considered like IP packets (payload pointing to iphdr).
2016 2007-08-27 Frédéric Bernon
2017 * api.h, api_lib.c, api_msg.c: First fix for "bug #20900 : Potential crash error
2018 problem with netconn_peer & netconn_addr". Introduce NETCONN_LISTEN netconn_state
2019 and remove obsolete ones (NETCONN_RECV & NETCONN_ACCEPT).
2021 2007-08-24 Kieran Mansley
2022 * inet.c Modify (acc >> 16) test to ((acc >> 16) != 0) to help buggy
2023 compiler (Paradigm C++)
2025 2007-08-09 Frédéric Bernon, Bill Florac
2026 * stats.h, stats.c, igmp.h, igmp.c, opt.h: Fix for bug #20503 : IGMP Improvement.
2027 Introduce IGMP_STATS to centralize statistics management.
2029 2007-08-09 Frédéric Bernon, Bill Florac
2030 * udp.c: Fix for bug #20503 : IGMP Improvement. Enable to receive a multicast
2031 packet on a udp pcb binded on an netif's IP address, and not on "any".
2033 2007-08-09 Frédéric Bernon, Bill Florac
2034 * igmp.h, igmp.c, ip.c: Fix minor changes from bug #20503 : IGMP Improvement.
2035 This is mainly on using lookup/lookfor, and some coding styles...
2037 2007-07-26 Frédéric Bernon (and "thedoctor")
2038 * igmp.c: Fix bug #20595 to accept IGMPv3 "Query" messages.
2040 2007-07-25 Simon Goldschmidt
2041 * api_msg.c, tcp.c: Another fix for bug #20021: by not returning an error if
2042 tcp_output fails in tcp_close, the code in do_close_internal gets simpler
2043 (tcp_output is called again later from tcp timers).
2045 2007-07-25 Simon Goldschmidt
2046 * ip_frag.c: Fixed bug #20429: use the new pbuf_copy_partial instead of the old
2047 copy_from_pbuf, which illegally modified the given pbuf.
2049 2007-07-25 Simon Goldschmidt
2050 * tcp_out.c: tcp_enqueue: pcb->snd_queuelen didn't work for chaine PBUF_RAMs:
2051 changed snd_queuelen++ to snd_queuelen += pbuf_clen(p).
2053 2007-07-24 Simon Goldschmidt
2054 * api_msg.c, tcp.c: Fix bug #20480: Check the pcb passed to tcp_listen() for the
2055 correct state (must be CLOSED).
2057 2007-07-13 Thomas Taranowski (commited by Jared Grubb)
2058 * memp.c: Fix bug #20478: memp_malloc returned NULL+MEMP_SIZE on failed
2059 allocation. It now returns NULL.
2061 2007-07-13 Frédéric Bernon
2062 * api_msg.c: Fix bug #20318: api_msg "recv" callbacks don't call pbuf_free in
2065 2007-07-13 Frédéric Bernon
2066 * api_msg.c: Fix bug #20315: possible memory leak problem if tcp_listen failed,
2067 because current code doesn't follow rawapi.txt documentation.
2069 2007-07-13 Kieran Mansley
2070 * src/core/tcp_in.c Apply patch#5741 from Oleg Tyshev to fix bug in
2071 out of sequence processing of received packets
2073 2007-07-03 Simon Goldschmidt
2074 * nearly-all-files: Added assertions where PBUF_RAM pbufs are used and an
2075 assumption is made that this pbuf is in one piece (i.e. not chained). These
2076 assumptions clash with the possibility of converting to fully pool-based
2077 pbuf implementations, where PBUF_RAM pbufs might be chained.
2079 2007-07-03 Simon Goldschmidt
2080 * api.h, api_lib.c, api_msg.c: Final fix for bug #20021 and some other problems
2081 when closing tcp netconns: removed conn->sem, less context switches when
2082 closing, both netconn_close and netconn_delete should safely close tcp
2085 2007-07-02 Simon Goldschmidt
2086 * ipv4/ip.h, ipv6/ip.h, opt.h, netif.h, etharp.h, ipv4/ip.c, netif.c, raw.c,
2087 tcp_out.c, udp.c, etharp.c: Added option LWIP_NETIF_HWADDRHINT (default=off)
2088 to cache ARP table indices with each pcb instead of single-entry cache for
2091 2007-07-02 Simon Goldschmidt
2092 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Added some ASSERTS and casts to prevent
2093 warnings when assigning to smaller types.
2095 2007-06-28 Simon Goldschmidt
2096 * tcp_out.c: Added check to prevent tcp_pcb->snd_queuelen from overflowing.
2098 2007-06-28 Simon Goldschmidt
2099 * tcp.h: Fixed bug #20287: Fixed nagle algorithm (sending was done too early if
2100 a segment contained chained pbufs)
2102 2007-06-28 Frédéric Bernon
2103 * autoip.c: replace most of rand() calls by a macro LWIP_AUTOIP_RAND which compute
2104 a "pseudo-random" value based on netif's MAC and some autoip fields. It's always
2105 possible to define this macro in your own lwipopts.h to always use C library's
2106 rand(). Note that autoip_create_rand_addr doesn't use this macro.
2108 2007-06-28 Frédéric Bernon
2109 * netifapi.h, netifapi.c, tcpip.h, tcpip.c: Update code to handle the option
2110 LWIP_TCPIP_CORE_LOCKING, and do some changes to be coherent with last modifications
2111 in api_lib/api_msg (use pointers and not type with table, etc...)
2113 2007-06-26 Simon Goldschmidt
2114 * udp.h: Fixed bug #20259: struct udp_hdr was lacking the packin defines.
2116 2007-06-25 Simon Goldschmidt
2117 * udp.c: Fixed bug #20253: icmp_dest_unreach was called with a wrong p->payload
2118 for udp packets with no matching pcb.
2120 2007-06-25 Simon Goldschmidt
2121 * udp.c: Fixed bug #20220: UDP PCB search in udp_input(): a non-local match
2122 could get udp input packets if the remote side matched.
2124 2007-06-13 Simon Goldschmidt
2125 * netif.c: Fixed bug #20180 (TCP pcbs listening on IP_ADDR_ANY could get
2126 changed in netif_set_ipaddr if previous netif->ip_addr.addr was 0.
2128 2007-06-13 Simon Goldschmidt
2129 * api_msg.c: pcb_new sets conn->err if protocol is not implemented
2130 -> netconn_new_..() does not allocate a new connection for unsupported
2133 2007-06-13 Frédéric Bernon, Simon Goldschmidt
2134 * api_lib.c: change return expression in netconn_addr and netconn_peer, because
2135 conn->err was reset to ERR_OK without any reasons (and error was lost)...
2137 2007-06-13 Frédéric Bernon, Matthias Weisser
2138 * opt.h, mem.h, mem.c, memp.c, pbuf.c, ip_frag.c, vj.c: Fix bug #20162. Rename
2139 MEM_ALIGN in LWIP_MEM_ALIGN and MEM_ALIGN_SIZE in LWIP_MEM_ALIGN_SIZE to avoid
2140 some macro names collision with some OS macros.
2142 2007-06-11 Simon Goldschmidt
2143 * udp.c: UDP Lite: corrected the use of chksum_len (based on RFC3828: if it's 0,
2144 create checksum over the complete packet. On RX, if it's < 8 (and not 0),
2145 discard the packet. Also removed the duplicate 'udphdr->chksum = 0' for both
2148 2007-06-11 Srinivas Gollakota & Oleg Tyshev
2149 * tcp_out.c: Fix for bug #20075 : "A problem with keep-alive timer and TCP flags"
2150 where TCP flags wasn't initialized in tcp_keepalive.
2152 2007-06-03 Simon Goldschmidt
2153 * udp.c: udp_input(): Input pbuf was not freed if pcb had no recv function
2154 registered, p->payload was modified without modifying p->len if sending
2155 icmp_dest_unreach() (had no negative effect but was definitively wrong).
2157 2007-06-03 Simon Goldschmidt
2158 * icmp.c: Corrected bug #19937: For responding to an icmp echo request, icmp
2159 re-used the input pbuf even if that didn't have enough space to include the
2160 link headers. Now the space is tested and a new pbuf is allocated for the
2161 echo response packet if the echo request pbuf isn't big enough.
2163 2007-06-01 Simon Goldschmidt
2164 * sockets.c: Checked in patch #5914: Moved sockopt processing into tcpip_thread.
2166 2007-05-23 Frédéric Bernon
2167 * api_lib.c, sockets.c: Fixed bug #5958 for netconn_listen (acceptmbox only
2168 allocated by do_listen if success) and netconn_accept errors handling. In
2169 most of api_lib functions, we replace some errors checkings like "if (conn==NULL)"
2170 by ASSERT, except for netconn_delete.
2172 2007-05-23 Frédéric Bernon
2173 * api_lib.c: Fixed bug #5957 "Safe-thread problem inside netconn_recv" to return
2174 an error code if it's impossible to fetch a pbuf on a TCP connection (and not
2175 directly close the recvmbox).
2177 2007-05-22 Simon Goldschmidt
2178 * tcp.c: Fixed bug #1895 (tcp_bind not correct) by introducing a list of
2179 bound but unconnected (and non-listening) tcp_pcbs.
2181 2007-05-22 Frédéric Bernon
2182 * sys.h, sys.c, api_lib.c, tcpip.c: remove sys_mbox_fetch_timeout() (was only
2183 used for LWIP_SO_RCVTIMEO option) and use sys_arch_mbox_fetch() instead of
2184 sys_mbox_fetch() in api files. Now, users SHOULD NOT use internal lwIP features
2185 like "sys_timeout" in their application threads.
2187 2007-05-22 Frédéric Bernon
2188 * api.h, api_lib.c, api_msg.h, api_msg.c: change the struct api_msg_msg to see
2189 which parameters are used by which do_xxx function, and to avoid "misusing"
2190 parameters (patch #5938).
2192 2007-05-22 Simon Goldschmidt
2193 * api_lib.c, api_msg.c, raw.c, api.h, api_msg.h, raw.h: Included patch #5938:
2194 changed raw_pcb.protocol from u16_t to u8_t since for IPv4 and IPv6, proto
2195 is only 8 bits wide. This affects the api, as there, the protocol was
2198 2007-05-18 Simon Goldschmidt
2199 * memp.c: addition to patch #5913: smaller pointer was returned but
2200 memp_memory was the same size -> did not save memory.
2202 2007-05-16 Simon Goldschmidt
2203 * loopif.c, slipif.c: Fix bug #19729: free pbuf if netif->input() returns
2206 2007-05-16 Simon Goldschmidt
2207 * api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same
2208 as the one of the netif used for sending to prevent sending from old
2209 addresses after a netif address gets changed (partly fixes bug #3168).
2211 2007-05-16 Frédéric Bernon
2212 * tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work
2213 with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in
2214 tcpip_init) because we have to be sure that network interfaces are already
2215 added (mac filter is updated only in igmp_init for the moment).
2217 2007-05-16 Simon Goldschmidt
2218 * mem.c, memp.c: Removed semaphores from memp, changed sys_sem_wait calls
2219 into sys_arch_sem_wait calls to prevent timers from running while waiting
2220 for the heap. This fixes bug #19167.
2222 2007-05-13 Simon Goldschmidt
2223 * tcp.h, sockets.h, sockets.c: Fixed bug from patch #5865 by moving the defines
2224 for socket options (lwip_set/-getsockopt) used with level IPPROTO_TCP from
2227 2007-05-07 Simon Goldschmidt
2228 * mem.c: Another attempt to fix bug #17922.
2230 2007-05-04 Simon Goldschmidt
2231 * pbuf.c, pbuf.h, etharp.c: Further update to ARP queueing: Changed pbuf_copy()
2232 implementation so that it can be reused (don't allocate the target
2233 pbuf inside pbuf_copy()).
2235 2007-05-04 Simon Goldschmidt
2236 * memp.c: checked in patch #5913: in memp_malloc() we can return memp as mem
2237 to save a little RAM (next pointer of memp is not used while not in pool).
2240 * sockets.c: Fix ioctl FIONREAD when some data remains from last recv.
2243 2007-04-23 Simon Goldschmidt
2244 * loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results
2245 in NULL reference for incoming TCP packets". Loopif has to be configured
2246 (using LWIP_LOOPIF_MULTITHREADING) to directly call netif->input()
2247 (multithreading environments, e.g. netif->input() = tcpip_input()) or
2248 putting packets on a list that is fed to the stack by calling loopif_poll()
2249 (single-thread / NO_SYS / polling environment where e.g.
2250 netif->input() = ip_input).
2252 2007-04-17 Jonathan Larmour
2253 * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold
2254 the difference between two u16_t's.
2255 * sockets.h: FD_SETSIZE needs to match number of sockets, which is
2256 MEMP_NUM_NETCONN in sockets.c right now.
2258 2007-04-12 Jonathan Larmour
2259 * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580).
2261 2007-04-12 Kieran Mansley
2262 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Modify way the retransmission
2263 timer is reset to fix bug#19434, with help from Oleg Tyshev.
2265 2007-04-11 Simon Goldschmidt
2266 * etharp.c, pbuf.c, pbuf.h: 3rd fix for bug #11400 (arp-queuing): More pbufs than
2267 previously thought need to be copied (everything but PBUF_ROM!). Cleaned up
2268 pbuf.c: removed functions no needed any more (by etharp).
2270 2007-04-11 Kieran Mansley
2271 * inet.c, ip_addr.h, sockets.h, sys.h, tcp.h: Apply patch #5745: Fix
2272 "Constant is long" warnings with 16bit compilers. Contributed by
2273 avatar@mmlab.cse.yzu.edu.tw
2275 2007-04-05 Frédéric Bernon, Jonathan Larmour
2276 * api_msg.c: Fix bug #16830: "err_tcp() posts to connection mailbox when no pend on
2277 the mailbox is active". Now, the post is only done during a connect, and do_send,
2278 do_write and do_join_leave_group don't do anything if a previous error was signaled.
2280 2007-04-03 Frédéric Bernon
2281 * ip.c: Don't set the IP_DF ("Don't fragment") flag in the IP header in IP output
2282 packets. See patch #5834.
2284 2007-03-30 Frédéric Bernon
2285 * api_msg.c: add a "pcb_new" helper function to avoid redundant code, and to add
2286 missing pcb allocations checking (in do_bind, and for each raw_new). Fix style.
2288 2007-03-30 Frédéric Bernon
2289 * most of files: prefix all debug.h define with "LWIP_" to avoid any conflict with
2290 others environment defines (these were too "generic").
2292 2007-03-28 Frédéric Bernon
2293 * api.h, api_lib.c, sockets.c: netbuf_ref doesn't check its internal pbuf_alloc call
2294 result and can cause a crash. lwip_send now check netbuf_ref result.
2296 2007-03-28 Simon Goldschmidt
2297 * sockets.c Remove "#include <errno.h>" from sockets.c to avoid multiple
2298 definition of macros (in errno.h and lwip/arch.h) if LWIP_PROVIDE_ERRNO is
2299 defined. This is the way it should have been already (looking at
2302 2007-03-28 Kieran Mansley
2303 * opt.h Change default PBUF_POOL_BUFSIZE (again) to accomodate default MSS +
2304 IP and TCP headers *and* physical link headers
2306 2007-03-26 Frédéric Bernon (based on patch from Dmitry Potapov)
2307 * api_lib.c: patch for netconn_write(), fixes a possible race condition which cause
2308 to send some garbage. It is not a definitive solution, but the patch does solve
2309 the problem for most cases.
2311 2007-03-22 Frédéric Bernon
2312 * api_msg.h, api_msg.c: Remove obsolete API_MSG_ACCEPT and do_accept (never used).
2314 2007-03-22 Frédéric Bernon
2315 * api_lib.c: somes resources couldn't be freed if there was errors during
2316 netconn_new_with_proto_and_callback.
2318 2007-03-22 Frédéric Bernon
2319 * ethernetif.c: update netif->input calls to check return value. In older ports,
2320 it's a good idea to upgrade them, even if before, there could be another problem
2321 (access to an uninitialized mailbox).
2323 2007-03-21 Simon Goldschmidt
2324 * sockets.c: fixed bug #5067 (essentialy a signed/unsigned warning fixed
2325 by casting to unsigned).
2327 2007-03-21 Frédéric Bernon
2328 * api_lib.c, api_msg.c, tcpip.c: integrate sys_mbox_fetch(conn->mbox, NULL) calls from
2329 api_lib.c to tcpip.c's tcpip_apimsg(). Now, use a local variable and not a
2330 dynamic one from memp to send tcpip_msg to tcpip_thread in a synchrone call.
2331 Free tcpip_msg from tcpip_apimsg is not done in tcpip_thread. This give a
2332 faster and more reliable communication between api_lib and tcpip.
2334 2007-03-21 Frédéric Bernon
2335 * opt.h: Add LWIP_NETIF_CALLBACK (to avoid compiler warning) and set it to 0.
2337 2007-03-21 Frédéric Bernon
2338 * api_msg.c, igmp.c, igmp.h: Fix C++ style comments
2340 2007-03-21 Kieran Mansley
2341 * opt.h Change default PBUF_POOL_BUFSIZE to accomodate default MSS +
2344 2007-03-21 Kieran Mansley
2345 * Fix all uses of pbuf_header to check the return value. In some
2346 cases just assert if it fails as I'm not sure how to fix them, but
2347 this is no worse than before when they would carry on regardless
2350 2007-03-21 Kieran Mansley
2351 * sockets.c, igmp.c, igmp.h, memp.h: Fix C++ style comments and
2352 comment out missing header include in icmp.c
2354 2007-03-20 Frédéric Bernon
2355 * memp.h, stats.c: Fix stats_display function where memp_names table wasn't
2356 synchronized with memp.h.
2358 2007-03-20 Frédéric Bernon
2359 * tcpip.c: Initialize tcpip's mbox, and verify if initialized in tcpip_input,
2360 tcpip_ethinput, tcpip_callback, tcpip_apimsg, to fix a init problem with
2361 network interfaces. Also fix a compiler warning.
2363 2007-03-20 Kieran Mansley
2364 * udp.c: Only try and use pbuf_header() to make space for headers if
2365 not a ROM or REF pbuf.
2367 2007-03-19 Frédéric Bernon
2368 * api_msg.h, api_msg.c, tcpip.h, tcpip.c: Add return types to tcpip_apimsg()
2371 2007-03-19 Frédéric Bernon
2372 * Remove unimplemented "memp_realloc" function from memp.h.
2374 2007-03-11 Simon Goldschmidt
2375 * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused
2378 2007-03-11 Simon Goldschmidt (based on patch from Dmitry Potapov)
2379 * api_lib.c, sockets.c, api.h, api_msg.h, sockets.h: Fixed bug #19251
2380 (missing `const' qualifier in socket functions), to get more compatible to
2381 standard POSIX sockets.
2383 2007-03-11 Frédéric Bernon (based on patch from Dmitry Potapov)
2384 * sockets.c: Add asserts inside bind, connect and sendto to check input
2385 parameters. Remove excessive set_errno() calls after get_socket(), because
2386 errno is set inside of get_socket(). Move last sock_set_errno() inside
2389 2007-03-09 Simon Goldschmidt
2390 * memp.c: Fixed bug #11400: New etharp queueing introduced bug: memp_memory
2391 was allocated too small.
2393 2007-03-06 Simon Goldschmidt
2394 * tcpip.c: Initialize dhcp timers in tcpip_thread (if LWIP_DHCP) to protect
2395 the stack from concurrent access.
2397 2007-03-06 Frédéric Bernon, Dmitry Potapov
2398 * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy
2399 call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().
2401 2007-03-06 Simon Goldschmidt
2402 * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files
2403 if IP_FRAG == 0 and IP_REASSEMBLY == 0
2405 2007-03-06 Frédéric Bernon, Simon Goldschmidt
2406 * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration
2407 option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput.
2408 Allow to do ARP processing for incoming packets inside tcpip_thread
2409 (protecting ARP layer against concurrent access). You can also disable
2410 old code using tcp_input with new define ETHARP_TCPIP_INPUT set to 0.
2411 Older ports have to use tcpip_ethinput.
2413 2007-03-06 Simon Goldschmidt (based on patch from Dmitry Potapov)
2414 * err.h, err.c: fixed compiler warning "initialization dircards qualifiers
2415 from pointer target type"
2417 2007-03-05 Frédéric Bernon
2418 * opt.h, sockets.h: add new configuration options (LWIP_POSIX_SOCKETS_IO_NAMES,
2419 ETHARP_TRUST_IP_MAC, review SO_REUSE)
2421 2007-03-04 Frédéric Bernon
2422 * api_msg.c: Remove some compiler warnings : parameter "pcb" was never
2425 2007-03-04 Frédéric Bernon
2426 * api_lib.c: Fix "[patch #5764] api_lib.c cleanup: after patch #5687" (from
2428 The api_msg struct stay on the stack (not moved to netconn struct).
2430 2007-03-04 Simon Goldschmidt (based on patch from Dmitry Potapov)
2431 * pbuf.c: Fix BUG#19168 - pbuf_free can cause deadlock (if
2432 SYS_LIGHTWEIGHT_PROT=1 & freeing PBUF_RAM when mem_sem is not available)
2433 Also fixed cast warning in pbuf_alloc()
2435 2007-03-04 Simon Goldschmidt
2436 * etharp.c, etharp.h, memp.c, memp.h, opt.h: Fix BUG#11400 - don't corrupt
2437 existing pbuf chain when enqueuing multiple pbufs to a pending ARP request
2439 2007-03-03 Frédéric Bernon
2440 * udp.c: remove obsolete line "static struct udp_pcb *pcb_cache = NULL;"
2441 It is static, and never used in udp.c except udp_init().
2443 2007-03-02 Simon Goldschmidt
2444 * tcpip.c: Moved call to ip_init(), udp_init() and tcp_init() from
2445 tcpip_thread() to tcpip_init(). This way, raw API connections can be
2446 initialized before tcpip_thread is running (e.g. before OS is started)
2448 2007-03-02 Frédéric Bernon
2449 * rawapi.txt: Fix documentation mismatch with etharp.h about etharp_tmr's call
2452 2007-02-28 Kieran Mansley
2453 * pbuf.c: Fix BUG#17645 - ensure pbuf payload pointer is not moved
2454 outside the region of the pbuf by pbuf_header()
2456 2007-02-28 Kieran Mansley
2457 * sockets.c: Fix BUG#19161 - ensure milliseconds timeout is non-zero
2458 when supplied timeout is also non-zero
2462 2006-12-05 Leon Woestenberg
2463 * CHANGELOG: Mention STABLE-1.2.0 release.
2467 2006-12-01 Christiaan Simons
2468 * mem.h, opt.h: Added MEM_LIBC_MALLOC option.
2469 Note this is a workaround. Currently I have no other options left.
2471 2006-10-26 Christiaan Simons (accepted patch by Jonathan Larmour)
2472 * ipv4/ip_frag.c: rename MAX_MTU to IP_FRAG_MAX_MTU and move define
2473 to include/lwip/opt.h.
2474 * ipv4/lwip/ip_frag.h: Remove unused IP_REASS_INTERVAL.
2475 Move IP_REASS_MAXAGE and IP_REASS_BUFSIZE to include/lwip/opt.h.
2476 * opt.h: Add above new options.
2478 2006-08-18 Christiaan Simons
2479 * tcp_{in,out}.c: added SNMP counters.
2480 * ipv4/ip.c: added SNMP counters.
2481 * ipv4/ip_frag.c: added SNMP counters.
2483 2006-08-08 Christiaan Simons
2484 * etharp.{c,h}: added etharp_find_addr() to read
2485 (stable) ethernet/IP address pair from ARP table
2487 2006-07-14 Christiaan Simons
2488 * mib_structs.c: added
2489 * include/lwip/snmp_structs.h: added
2490 * netif.{c,h}, netif/ethernetif.c: added SNMP statistics to netif struct
2492 2006-07-06 Christiaan Simons
2493 * snmp/asn1_{enc,dec}.c added
2495 * snmp/msg_{in,out}.c added
2496 * include/lwip/snmp_asn1.h added
2497 * include/lwip/snmp_msg.h added
2498 * doc/snmp_agent.txt added
2500 2006-03-29 Christiaan Simons
2501 * inet.c, inet.h: Added platform byteswap support.
2502 Added LWIP_PLATFORM_BYTESWAP define (defaults to 0) and
2503 optional LWIP_PLATFORM_HTONS(), LWIP_PLATFORM_HTONL() macros.
2507 2006-11-30 Christiaan Simons
2508 * dhcp.c: Fixed false triggers of request_timeout.
2510 2006-11-28 Christiaan Simons
2511 * netif.c: In netif_add() fixed missing clear of ip_addr, netmask, gw and flags.
2513 2006-10-11 Christiaan Simons
2514 * api_lib.c etharp.c, ip.c, memp.c, stats.c, sys.{c,h} tcp.h:
2515 Partially accepted patch #5449 for ANSI C compatibility / build fixes.
2516 * ipv4/lwip/ip.h ipv6/lwip/ip.h: Corrected UDP-Lite protocol
2517 identifier from 170 to 136 (bug #17574).
2519 2006-10-10 Christiaan Simons
2520 * api_msg.c: Fixed Nagle algorithm as reported by Bob Grice.
2522 2006-08-17 Christiaan Simons
2523 * udp.c: Fixed bug #17200, added check for broadcast
2524 destinations for PCBs bound to a unicast address.
2526 2006-08-07 Christiaan Simons
2527 * api_msg.c: Flushing TCP output in do_close() (bug #15926).
2529 2006-06-27 Christiaan Simons
2530 * api_msg.c: Applied patch for cold case (bug #11135).
2531 In accept_function() ensure newconn->callback is always initialized.
2533 2006-06-15 Christiaan Simons
2534 * mem.h: added MEM_SIZE_F alias to fix an ancient cold case (bug #1748),
2535 facilitate printing of mem_size_t and u16_t statistics.
2537 2006-06-14 Christiaan Simons
2538 * api_msg.c: Applied patch #5146 to handle allocation failures
2539 in accept() by Kevin Lawson.
2541 2006-05-26 Christiaan Simons
2542 * api_lib.c: Removed conn->sem creation and destruction
2543 from netconn_write() and added sys_sem_new to netconn_new_*.
2547 2006-03-03 Christiaan Simons
2548 * ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap
2549 access and added pbuf_alloc() return value checks.
2551 2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net>
2552 * tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is
2553 now handled by the checksum routine properly.
2555 2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net>
2556 * pbuf.c: Fix alignment; pbuf_init() would not work unless
2557 pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.)
2559 2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net>
2560 * tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch
2561 submitted by Mitrani Hiroshi.
2563 2005-12-15 Christiaan Simons
2564 * inet.c: Disabled the added summing routine to preserve code space.
2566 2005-12-14 Leon Woestenberg <leon.woestenberg@gmx.net>
2567 * tcp_in.c: Duplicate FIN ACK race condition fix by Kelvin Lawson.
2568 Added Curt McDowell's optimized checksumming routine for future
2569 inclusion. Need to create test case for unaliged, aligned, odd,
2570 even length combination of cases on various endianess machines.
2572 2005-12-09 Christiaan Simons
2573 * inet.c: Rewrote standard checksum routine in proper portable C.
2575 2005-11-25 Christiaan Simons
2576 * udp.c tcp.c: Removed SO_REUSE hack. Should reside in socket code only.
2577 * *.c: introduced cc.h LWIP_DEBUG formatters matching the u16_t, s16_t,
2578 u32_t, s32_t typedefs. This solves most debug word-length assumes.
2580 2005-07-17 Leon Woestenberg <leon.woestenberg@gmx.net>
2581 * inet.c: Fixed unaligned 16-bit access in the standard checksum
2582 routine by Peter Jolasson.
2583 * slipif.c: Fixed implementation assumption of single-pbuf datagrams.
2585 2005-02-04 Leon Woestenberg <leon.woestenberg@gmx.net>
2586 * tcp_out.c: Fixed uninitialized 'queue' referenced in memerr branch.
2587 * tcp_{out|in}.c: Applied patch fixing unaligned access.
2589 2005-01-04 Leon Woestenberg <leon.woestenberg@gmx.net>
2590 * pbuf.c: Fixed missing semicolon after LWIP_DEBUG statement.
2592 2005-01-03 Leon Woestenberg <leon.woestenberg@gmx.net>
2593 * udp.c: UDP pcb->recv() was called even when it was NULL.
2597 2004-12-28 Leon Woestenberg <leon.woestenberg@gmx.net>
2598 * etharp.*: Disabled multiple packets on the ARP queue.
2599 This clashes with TCP queueing.
2601 2004-11-28 Leon Woestenberg <leon.woestenberg@gmx.net>
2602 * etharp.*: Fixed race condition from ARP request to ARP timeout.
2603 Halved the ARP period, doubled the period counts.
2604 ETHARP_MAX_PENDING now should be at least 2. This prevents
2605 the counter from reaching 0 right away (which would allow
2606 too little time for ARP responses to be received).
2608 2004-11-25 Leon Woestenberg <leon.woestenberg@gmx.net>
2609 * dhcp.c: Decline messages were not multicast but unicast.
2610 * etharp.c: ETHARP_CREATE is renamed to ETHARP_TRY_HARD.
2611 Do not try hard to insert arbitrary packet's source address,
2612 etharp_ip_input() now calls etharp_update() without ETHARP_TRY_HARD.
2613 etharp_query() now always DOES call ETHARP_TRY_HARD so that users
2614 querying an address will see it appear in the cache (DHCP could
2615 suffer from this when a server invalidly gave an in-use address.)
2616 * ipv4/ip_addr.h: Renamed ip_addr_maskcmp() to _netcmp() as we are
2617 comparing network addresses (identifiers), not the network masks
2619 * ipv4/ip_addr.c: ip_addr_isbroadcast() now checks that the given
2620 IP address actually belongs to the network of the given interface.
2622 2004-11-24 Kieran Mansley <kjm25@cam.ac.uk>
2623 * tcp.c: Increment pcb->snd_buf when ACK is received in SYN_SENT state.
2627 2004-10-16 Kieran Mansley <kjm25@cam.ac.uk>
2628 * tcp.c: Add code to tcp_recved() to send an ACK (window update) immediately,
2629 even if one is already pending, if the rcv_wnd is above a threshold
2630 (currently TCP_WND/2). This avoids waiting for a timer to expire to send a
2631 delayed ACK in order to open the window if the stack is only receiving data.
2633 2004-09-12 Kieran Mansley <kjm25@cam.ac.uk>
2634 * tcp*.*: Retransmit time-out handling improvement by Sam Jansen.
2636 2004-08-20 Tony Mountifield <tony@softins.co.uk>
2637 * etharp.c: Make sure the first pbuf queued on an ARP entry
2638 is properly ref counted.
2640 2004-07-27 Tony Mountifield <tony@softins.co.uk>
2641 * debug.h: Added (int) cast in LWIP_DEBUGF() to avoid compiler
2642 warnings about comparison.
2643 * pbuf.c: Stopped compiler complaining of empty if statement
2644 when LWIP_DEBUGF() empty. Closed an unclosed comment.
2645 * tcp.c: Stopped compiler complaining of empty if statement
2646 when LWIP_DEBUGF() empty.
2647 * ip.h Corrected IPH_TOS() macro: returns a byte, so doesn't need htons().
2648 * inet.c: Added a couple of casts to quiet the compiler.
2649 No need to test isascii(c) before isdigit(c) or isxdigit(c).
2651 2004-07-22 Tony Mountifield <tony@softins.co.uk>
2652 * inet.c: Made data types consistent in inet_ntoa().
2653 Added casts for return values of checksum routines, to pacify compiler.
2654 * ip_frag.c, tcp_out.c, sockets.c, pbuf.c
2655 Small corrections to some debugging statements, to pacify compiler.
2657 2004-07-21 Tony Mountifield <tony@softins.co.uk>
2658 * etharp.c: Removed spurious semicolon and added missing end-of-comment.
2659 * ethernetif.c Updated low_level_output() to match prototype for
2660 netif->linkoutput and changed low_level_input() similarly for consistency.
2661 * api_msg.c: Changed recv_raw() from int to u8_t, to match prototype
2662 of raw_recv() in raw.h and so avoid compiler error.
2663 * sockets.c: Added trivial (int) cast to keep compiler happier.
2664 * ip.c, netif.c Changed debug statements to use the tidier ip4_addrN() macros.
2670 2004-07-05 Leon Woestenberg <leon.woestenberg@gmx.net>
2671 * sockets.*: Restructured LWIP_PRIVATE_TIMEVAL. Make sure
2672 your cc.h file defines this either 1 or 0. If non-defined,
2674 * .c: Added <string.h> and <errno.h> includes where used.
2675 * etharp.c: Made some array indices unsigned.
2677 2004-06-27 Leon Woestenberg <leon.woestenberg@gmx.net>
2678 * netif.*: Added netif_set_up()/down().
2679 * dhcp.c: Changes to restart program flow.
2681 2004-05-07 Leon Woestenberg <leon.woestenberg@gmx.net>
2682 * etharp.c: In find_entry(), instead of a list traversal per candidate, do a
2683 single-pass lookup for different candidates. Should exploit locality.
2685 2004-04-29 Leon Woestenberg <leon.woestenberg@gmx.net>
2686 * tcp*.c: Cleaned up source comment documentation for Doxygen processing.
2687 * opt.h: ETHARP_ALWAYS_INSERT option removed to comply with ARP RFC.
2688 * etharp.c: update_arp_entry() only adds new ARP entries when adviced to by
2689 the caller. This deprecates the ETHARP_ALWAYS_INSERT overrule option.
2693 2004-04-27 Leon Woestenberg <leon.woestenberg@gmx.net>
2694 * etharp.c: Applied patch of bug #8708 by Toni Mountifield with a solution
2695 suggested by Timmy Brolin. Fix for 32-bit processors that cannot access
2696 non-aligned 32-bit words, such as soms 32-bit TCP/IP header fields. Fix
2697 is to prefix the 14-bit Ethernet headers with two padding bytes.
2699 2004-04-23 Leon Woestenberg <leon.woestenberg@gmx.net>
2700 * ip_addr.c: Fix in the ip_addr_isbroadcast() check.
2701 * etharp.c: Fixed the case where the packet that initiates the ARP request
2702 is not queued, and gets lost. Fixed the case where the packets destination
2703 address is already known; we now always queue the packet and perform an ARP
2710 * Fixed TCP bug for SYN_SENT to ESTABLISHED state transition.
2711 * Fixed TCP bug in dequeueing of FIN from out of order segment queue.
2712 * Fixed two possible NULL references in rare cases.
2718 * Fixed DHCP which did not include the IP address in DECLINE messages.
2722 * etharp.c has been hauled over a bit.
2728 * Fixed TCP bug induced by bad window resizing with unidirectional TCP traffic.
2729 * Packets sent from ARP queue had invalid source hardware address.
2733 * Pass-by ARP requests do now update the cache.
2737 * No longer dependent on ctype.h.
2738 * New socket options.
2739 * Raw IP pcb support.
2745 * Some debug formatters and casts fixed.
2746 * Numereous fixes in PPP.
2750 * DEBUGF now is LWIP_DEBUGF
2751 * pbuf_dechain() has been re-enabled.
2752 * Mentioned the changed use of CVS branches in README.
2758 * Fixed pool pbuf memory leak in pbuf_alloc().
2759 Occured if not enough PBUF_POOL pbufs for a packet pbuf chain.
2760 Reported by Savin Zlobec.
2762 * PBUF_POOL chains had their tot_len field not set for non-first
2763 pbufs. Fixed in pbuf_alloc().
2767 * Added PPP stack contributed by Marc Boucher
2771 * Now drops short packets for ICMP/UDP/TCP protocols. More robust.
2773 * ARP queueuing now queues the latest packet instead of the first.
2774 This is the RFC recommended behaviour, but can be overridden in
2781 * TCP has been fixed to deal with the new use of the pbuf->ref
2784 * DHCP dhcp_inform() crash bug fixed.
2788 * Removed pbuf_pool_free_cache and pbuf_pool_alloc_cache. Also removed
2789 pbuf_refresh(). This has sped up pbuf pool operations considerably.
2790 Implemented by David Haas.
2796 * The packet buffer implementation has been enhanced to support
2797 zero-copy and copy-on-demand for packet buffers which have their
2798 payloads in application-managed memory.
2799 Implemented by David Haas.
2801 Use PBUF_REF to make a pbuf refer to RAM. lwIP will use zero-copy
2802 if an outgoing packet can be directly sent on the link, or perform
2803 a copy-on-demand when necessary.
2805 The application can safely assume the packet is sent, and the RAM
2806 is available to the application directly after calling udp_send()
2807 or similar function.
2811 * ARP_QUEUEING should now correctly work for all cases, including
2813 Implemented by Leon Woestenberg.
2817 * IP_ADDR_ANY is no longer a NULL pointer. Instead, it is a pointer
2818 to a '0.0.0.0' IP address.
2820 * The packet buffer implementation is changed. The pbuf->ref counter
2821 meaning has changed, and several pbuf functions have been
2822 adapted accordingly.
2824 * netif drivers have to be changed to set the hardware address length field
2825 that must be initialized correctly by the driver (hint: 6 for Ethernet MAC).
2826 See the contrib/ports/c16x cs8900 driver as a driver example.
2828 * netif's have a dhcp field that must be initialized to NULL by the driver.
2829 See the contrib/ports/c16x cs8900 driver as a driver example.
2831 (0.5.x) This file has been unmaintained up to 0.6.1. All changes are
2832 logged in CVS but have not been explained here.
2834 (0.5.3) Changes since version 0.5.2
2838 * memp_malloc(MEMP_API_MSG) could fail with multiple application
2839 threads because it wasn't protected by semaphores.
2843 * struct ip_addr now packed.
2845 * The name of the time variable in arp.c has been changed to ctime
2846 to avoid conflicts with the time() function.
2848 (0.5.2) Changes since version 0.5.1
2852 * A new TCP function, tcp_tmr(), now handles both TCP timers.
2856 * A bug in tcp_parseopt() could cause the stack to hang because of a
2857 malformed TCP option.
2859 * The address of new connections in the accept() function in the BSD
2860 socket library was not handled correctly.
2862 * pbuf_dechain() did not update the ->tot_len field of the tail.
2864 * Aborted TCP connections were not handled correctly in all
2869 * All protocol header structs are now packed.
2871 * The ->len field in the tcp_seg structure now counts the actual
2872 amount of data, and does not add one for SYN and FIN segments.
2874 (0.5.1) Changes since version 0.5.0
2878 * Possible to run as a user process under Linux.
2880 * Preliminary support for cross platform packed structs.
2882 * ARP timer now implemented.
2886 * TCP output queue length was badly initialized when opening
2889 * TCP delayed ACKs were not sent correctly.
2891 * Explicit initialization of BSS segment variables.
2893 * read() in BSD socket library could drop data.
2895 * Problems with memory alignment.
2897 * Situations when all TCP buffers were used could lead to
2900 * TCP MSS option wasn't parsed correctly.
2902 * Problems with UDP checksum calculation.
2904 * IP multicast address tests had endianess problems.
2906 * ARP requests had wrong destination hardware address.
2910 * struct eth_addr changed from u16_t[3] array to u8_t[6].
2912 * A ->linkoutput() member was added to struct netif.
2914 * TCP and UDP ->dest_* struct members where changed to ->remote_*.
2916 * ntoh* macros are now null definitions for big endian CPUs.
2918 (0.5.0) Changes since version 0.4.2
2922 * Redesigned operating system emulation layer to make porting easier.
2924 * Better control over TCP output buffers.
2926 * Documenation added.
2930 * Locking issues in buffer management.
2932 * Bugfixes in the sequential API.
2934 * IP forwarding could cause memory leakage. This has been fixed.
2938 * Directory structure somewhat changed; the core/ tree has been
2941 (0.4.2) Changes since version 0.4.1
2945 * Experimental ARP implementation added.
2947 * Skeleton Ethernet driver added.
2949 * Experimental BSD socket API library added.
2953 * In very intense situations, memory leakage could occur. This has
2958 * Variables named "data" and "code" have been renamed in order to
2959 avoid name conflicts in certain compilers.
2961 * Variable++ have in appliciable cases been translated to ++variable
2962 since some compilers generate better code in the latter case.
2964 (0.4.1) Changes since version 0.4
2968 * TCP: Connection attempts time out earlier than data
2969 transmissions. Nagle algorithm implemented. Push flag set on the
2970 last segment in a burst.
2972 * UDP: experimental support for UDP-Lite extensions.
2976 * TCP: out of order segments were in some cases handled incorrectly,
2977 and this has now been fixed. Delayed acknowledgements was broken
2978 in 0.4, has now been fixed. Binding to an address that is in use
2979 now results in an error. Reset connections sometimes hung an
2980 application; this has been fixed.
2982 * Checksum calculation sometimes failed for chained pbufs with odd
2983 lengths. This has been fixed.
2985 * API: a lot of bug fixes in the API. The UDP API has been improved
2986 and tested. Error reporting and handling has been
2987 improved. Logical flaws and race conditions for incoming TCP
2988 connections has been found and removed.
2990 * Memory manager: alignment issues. Reallocating memory sometimes
2991 failed, this has been fixed.
2993 * Generic library: bcopy was flawed and has been fixed.
2997 * API: all datatypes has been changed from generic ones such as
2998 ints, to specified ones such as u16_t. Functions that return
2999 errors now have the correct type (err_t).
3001 * General: A lot of code cleaned up and debugging code removed. Many
3002 portability issues have been fixed.
3004 * The license was changed; the advertising clause was removed.
3008 * Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri
3009 Kosunen, Mikael Caleres, and Frits Wilmink for reporting and
3012 (0.4) Changes since version 0.3.1
3014 * Memory management has been radically changed; instead of
3015 allocating memory from a shared heap, memory for objects that are
3016 rapidly allocated and deallocated is now kept in pools. Allocation
3017 and deallocation from those memory pools is very fast. The shared
3018 heap is still present but is used less frequently.
3020 * The memory, memory pool, and packet buffer subsystems now support
3021 4-, 2-, or 1-byte alignment.
3023 * "Out of memory" situations are handled in a more robust way.
3025 * Stack usage has been reduced.
3027 * Easier configuration of lwIP parameters such as memory usage,
3028 TTLs, statistics gathering, etc. All configuration parameters are
3029 now kept in a single header file "lwipopts.h".
3031 * The directory structure has been changed slightly so that all
3032 architecture specific files are kept under the src/arch
3035 * Error propagation has been improved, both in the protocol modules
3038 * The code for the RTXC architecture has been implemented, tested
3041 * Bugs have been found and corrected in the TCP, UDP, IP, API, and
3042 the Internet checksum modules.
3044 * Bugs related to porting between a 32-bit and a 16-bit architecture
3045 have been found and corrected.
3047 * The license has been changed slightly to conform more with the
3048 original BSD license, including the advertisement clause.
3050 (0.3.1) Changes since version 0.3
3052 * Fix of a fatal bug in the buffer management. Pbufs with allocated
3053 RAM never returned the RAM when the pbuf was deallocated.
3055 * TCP congestion control, window updates and retransmissions did not
3056 work correctly. This has now been fixed.
3058 * Bugfixes in the API.
3060 (0.3) Changes since version 0.2
3062 * New and improved directory structure. All include files are now
3063 kept in a dedicated include/ directory.
3065 * The API now has proper error handling. A new function,
3066 netconn_err(), now returns an error code for the connection in
3069 * Improvements in the memory management subsystem. The system now
3070 keeps a pointer to the lowest free memory block. A new function,
3071 mem_malloc2() tries to allocate memory once, and if it fails tries
3072 to free some memory and retry the allocation.
3074 * Much testing has been done with limited memory
3075 configurations. lwIP now does a better job when overloaded.
3077 * Some bugfixes and improvements to the buffer (pbuf) subsystem.
3079 * Many bugfixes in the TCP code:
3081 - Fixed a bug in tcp_close().
3083 - The TCP receive window was incorrectly closed when out of
3084 sequence segments was received. This has been fixed.
3086 - Connections are now timed-out of the FIN-WAIT-2 state.
3088 - The initial congestion window could in some cases be too
3089 large. This has been fixed.
3091 - The retransmission queue could in some cases be screwed up. This
3094 - TCP RST flag now handled correctly.
3096 - Out of sequence data was in some cases never delivered to the
3097 application. This has been fixed.
3099 - Retransmitted segments now contain the correct acknowledgment
3100 number and advertised window.
3102 - TCP retransmission timeout backoffs are not correctly computed
3103 (ala BSD). After a number of retransmissions, TCP now gives up
3106 * TCP connections now are kept on three lists, one for active
3107 connections, one for listening connections, and one for
3108 connections that are in TIME-WAIT. This greatly speeds up the fast
3109 timeout processing for sending delayed ACKs.
3111 * TCP now provides proper feedback to the application when a
3112 connection has been successfully set up.
3114 * More comments have been added to the code. The code has also been
3115 somewhat cleaned up.
3117 (0.2) Initial public release.