3 * TODO: The lwIP source code makes some invalid assumptions on processor
4 word-length, storage sizes and alignment. See the mailing lists for
5 problems with exoteric (/DSP) architectures showing these problems.
6 We still have to fix some of these issues neatly.
8 * TODO: the PPP code is broken in a few ways. There are namespace
9 collisions on BSD systems and many assumptions on word-length
10 (sizeof(int)). In ppp.c an assumption is made on the availability of
11 a thread subsystem. Either PPP needs to be moved to contrib/ports/???
12 or rearranged to be more generic.
18 * [Enter new changes just after this line - do not remove this line]
30 2008-03-10 Jonathan Larmour
31 * inet_chksum.c: Allow choice of one of the sample algorithms to be
32 made from lwipopts.h. Fix comment on how to override LWIP_CHKSUM.
34 2008-01-22 Frédéric Bernon
35 * tcp.c, tcp_in.c, tcp.h, opt.h: Rename LWIP_CALCULATE_EFF_SEND_MSS in
36 TCP_CALCULATE_EFF_SEND_MSS to have coherent TCP options names.
38 2008-01-14 Frédéric Bernon
39 * rawapi.txt, api_msg.c, tcp.c, tcp_in.c, tcp.h: changes for task #7675 "Enable
40 to refuse data on a TCP_EVENT_RECV call". Important, behavior changes for the
41 tcp_recv callback (see rawapi.txt).
43 2008-01-14 Frédéric Bernon, Marc Chaland
44 * ip.c: Integrate patch #6369" ip_input : checking before realloc".
46 2008-01-12 Frédéric Bernon
47 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
48 netconn::sem per netconn::op_completed like suggested for the task #7490
49 "Add return value to sys_mbox_post".
51 2008-01-12 Frédéric Bernon
52 * api_msg.c, opt.h: replace DEFAULT_RECVMBOX_SIZE per DEFAULT_TCP_RECVMBOX_SIZE,
53 DEFAULT_UDP_RECVMBOX_SIZE and DEFAULT_RAW_RECVMBOX_SIZE (to optimize queues
54 sizes), like suggested for the task #7490 "Add return value to sys_mbox_post".
56 2008-01-10 Frédéric Bernon
57 * tcpip.h, tcpip.c: add tcpip_callback_with_block function for the task #7490
58 "Add return value to sys_mbox_post". tcpip_callback is always defined as
59 "blocking" ("block" parameter = 1).
61 2008-01-10 Frédéric Bernon
62 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
63 netconn::mbox (sys_mbox_t) per netconn::sem (sys_sem_t) for the task #7490
64 "Add return value to sys_mbox_post".
66 2008-01-05 Frédéric Bernon
67 * sys_arch.txt, api.h, api_lib.c, api_msg.h, api_msg.c, tcpip.c, sys.h, opt.h:
68 Introduce changes for task #7490 "Add return value to sys_mbox_post" with some
69 modifications in the sys_mbox api: sys_mbox_new take a "size" parameters which
70 indicate the number of pointers query by the mailbox. There is three defines
71 in opt.h to indicate sizes for tcpip::mbox, netconn::recvmbox, and for the
72 netconn::acceptmbox. Port maintainers, you can decide to just add this new
73 parameter in your implementation, but to ignore it to keep the previous behavior.
74 The new sys_mbox_trypost function return a value to know if the mailbox is
75 full or if the message is posted. Take a look to sys_arch.txt for more details.
76 This new function is used in tcpip_input (so, can be called in an interrupt
77 context since the function is not blocking), and in recv_udp and recv_raw.
79 2008-01-04 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
80 * rawapi.txt, api.h, api_lib.c, api_msg.h, api_msg.c, sockets.c, tcp.h, tcp.c,
81 tcp_in.c, init.c, opt.h: rename backlog options with TCP_ prefix, limit the
82 "backlog" parameter in an u8_t, 0 is interpreted as "smallest queue", add
83 documentation in the rawapi.txt file.
85 2007-12-31 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
86 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Add TCP persist timer
88 2007-12-31 Frédéric Bernon, Luca Ceresoli
89 * autoip.c, etharp.c: ip_addr.h: Integrate patch #6348: "Broadcast ARP packets
90 in autoip". The change in etharp_raw could be removed, since all calls to
91 etharp_raw use ethbroadcast for the "ethdst_addr" parameter. But it could be
94 2007-12-30 Frédéric Bernon, Tom Evans
95 * ip.c: Fix bug #21846 "LwIP doesn't appear to perform any IP Source Address
96 Filtering" reported by Tom Evans.
98 2007-12-21 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
99 * tcp.h, opt.h, api.h, api_msg.h, tcp.c, tcp_in.c, api_lib.c, api_msg.c,
100 sockets.c, init.c: task #7252: Implement TCP listen backlog: Warning: raw API
101 applications have to call 'tcp_accepted(pcb)' in their accept callback to
102 keep accepting new connections.
104 2007-12-13 Frédéric Bernon
105 * api_msg.c, err.h, err.c, sockets.c, dns.c, dns.h: replace "enum dns_result"
106 by err_t type. Add a new err_t code "ERR_INPROGRESS".
108 2007-12-12 Frédéric Bernon
109 * dns.h, dns.c, opt.h: move DNS options to the "right" place. Most visibles
110 are the one which have ram usage.
112 2007-12-05 Frédéric Bernon
113 * netdb.c: add a LWIP_DNS_API_HOSTENT_STORAGE option to decide to use a static
114 set of variables (=0) or a local one (=1). In this last case, your port should
115 provide a function "struct hostent* sys_thread_hostent( struct hostent* h)"
116 which have to do a copy of "h" and return a pointer ont the "per-thread" copy.
118 2007-12-03 Simon Goldschmidt
119 * ip.c: ip_input: check if a packet is for inp first before checking all other
120 netifs on netif_list (speeds up packet receiving in most cases)
122 2007-11-30 Simon Goldschmidt
123 * udp.c, raw.c: task #7497: Sort lists (pcb, netif, ...) for faster access
124 UDP: move a (connected) pcb selected for input to the front of the list of
125 pcbs so that it is found faster next time. Same for RAW pcbs that have eaten
128 2007-11-28 Simon Goldschmidt
129 * etharp.c, stats.c, stats.h, opt.h: Introduced ETHARP_STATS
131 2007-11-25 Simon Goldschmidt
132 * dhcp.c: dhcp_unfold_reply() uses pbuf_copy_partial instead of its own copy
135 2007-11-24 Simon Goldschmidt
136 * netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c
137 to the new file netdb.c; included lwip_getaddrinfo.
139 2007-11-21 Simon Goldschmidt
140 * tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
141 based on the MTU of the netif used to send. Enabled by default. Disable by
142 setting LWIP_CALCULATE_EFF_SEND_MSS to 0. This fixes bug #21492.
144 2007-11-19 Frédéric Bernon
145 * api_msg.c, dns.h, dns.c: Implement DNS_DOES_NAME_CHECK option (check if name
146 received match the name query), implement DNS_USES_STATIC_BUF (the place where
147 copy dns payload to parse the response), return an error if there is no place
148 for a new query, and fix some minor problems.
150 2007-11-16 Simon Goldschmidt
151 * new files: ipv4/inet.c, ipv4/inet_chksum.c, ipv6/inet6.c
152 removed files: core/inet.c, core/inet6.c
153 Moved inet files into ipv4/ipv6 directory; splitted inet.c/inet.h into
154 inet and chksum part; changed includes in all lwIP files as appropriate
156 2007-11-16 Simon Goldschmidt
157 * api.h, api_msg.h, api_lib.c, api_msg.c, socket.h, socket.c: Added sequential
158 dns resolver function for netconn api (netconn_gethostbyname) and socket api
159 (gethostbyname/gethostbyname_r).
161 2007-11-15 Jim Pettinato, Frédéric Bernon
162 * opt.h, init.c, tcpip.c, dhcp.c, dns.h, dns.c: add DNS client for simple name
163 requests with RAW api interface. Initialization is done in lwip_init() with
164 build time options. DNS timer is added in tcpip_thread context. DHCP can set
165 DNS server ip addresses when options are received. You need to set LWIP_DNS=1
166 in your lwipopts.h file (LWIP_DNS=0 in opt.h). DNS_DEBUG can be set to get
167 some traces with LWIP_DEBUGF. Sanity check have been added. There is a "todo"
168 list with points to improve.
170 2007-11-06 Simon Goldschmidt
171 * opt.h, mib2.c: Patch #6215: added ifAdminStatus write support (if explicitly
172 enabled by defining SNMP_SAFE_REQUESTS to 0); added code to check link status
173 for ifOperStatus if LWIP_NETIF_LINK_CALLBACK is defined.
175 2007-11-06 Simon Goldschmidt
176 * api.h, api_msg.h and dependent files: Task #7410: Removed the need to include
177 core header files in api.h (ip/tcp/udp/raw.h) to hide the internal
178 implementation from netconn api applications.
180 2007-11-03 Frédéric Bernon
181 * api.h, api_lib.c, api_msg.c, sockets.c, opt.h: add SO_RCVBUF option for UDP &
182 RAW netconn. You need to set LWIP_SO_RCVBUF=1 in your lwipopts.h (it's disabled
183 by default). Netconn API users can use the netconn_recv_bufsize macro to access
184 it. This is a first release which have to be improve for TCP. Note it used the
185 netconn::recv_avail which need to be more "thread-safe" (note there is already
186 the problem for FIONREAD with lwip_ioctl/ioctlsocket).
188 2007-11-01 Frédéric Bernon, Marc Chaland
189 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, tcp.h, tcp_out.c:
190 Integrate "patch #6250 : MSG_MORE flag for send". MSG_MORE is used at socket api
191 layer, NETCONN_MORE at netconn api layer, and TCP_WRITE_FLAG_MORE at raw api
192 layer. This option enable to delayed TCP PUSH flag on multiple "write" calls.
193 Note that previous "copy" parameter for "write" APIs is now called "apiflags".
195 2007-10-24 Frédéric Bernon
196 * api.h, api_lib.c, api_msg.c: Add macro API_EVENT in the same spirit than
197 TCP_EVENT_xxx macros to get a code more readable. It could also help to remove
198 some code (like we have talk in "patch #5919 : Create compile switch to remove
199 select code"), but it could be done later.
201 2007-10-08 Simon Goldschmidt
202 * many files: Changed initialization: many init functions are not needed any
203 more since we now rely on the compiler initializing global and static
206 2007-10-06 Simon Goldschmidt
207 * ip_frag.c, memp.c, mib2.c, ip_frag.h, memp_std.h, opt.h: Changed IP_REASSEMBLY
208 to enqueue the received pbufs so that multiple packets can be reassembled
209 simultaneously and no static reassembly buffer is needed.
211 2007-10-05 Simon Goldschmidt
212 * tcpip.c, etharp.h, etharp.c: moved ethernet_input from tcpip.c to etharp.c so
213 all netifs (or ports) can use it.
215 2007-10-05 Frédéric Bernon
216 * netifapi.h, netifapi.c: add function netifapi_netif_set_default. Change the
217 common function to reduce a little bit the footprint (for all functions using
218 only the "netif" parameter).
220 2007-10-03 Frédéric Bernon
221 * netifapi.h, netifapi.c: add functions netifapi_netif_set_up, netifapi_netif_set_down,
222 netifapi_autoip_start and netifapi_autoip_stop. Use a common function to reduce
223 a little bit the footprint (for all functions using only the "netif" parameter).
225 2007-09-15 Frédéric Bernon
226 * udp.h, udp.c, sockets.c: Changes for "#20503 IGMP Improvement". Add IP_MULTICAST_IF
227 option in socket API, and a new field "multicast_ip" in "struct udp_pcb" (for
228 netconn and raw API users), only if LWIP_IGMP=1. Add getsockopt processing for
229 IP_MULTICAST_TTL and IP_MULTICAST_IF.
231 2007-09-10 Frédéric Bernon
232 * snmp.h, mib2.c: enable to remove SNMP timer (which consumne several cycles
233 even when it's not necessary). snmp_agent.txt tell to call snmp_inc_sysuptime()
234 each 10ms (but, it's intrusive if you use sys_timeout feature). Now, you can
235 decide to call snmp_add_sysuptime(100) each 1000ms (which is bigger "step", but
236 call to a lower frequency). Or, you can decide to not call snmp_inc_sysuptime()
237 or snmp_add_sysuptime(), and to define the SNMP_GET_SYSUPTIME(sysuptime) macro.
238 This one is undefined by default in mib2.c. SNMP_GET_SYSUPTIME is called inside
239 snmp_get_sysuptime(u32_t *value), and enable to change "sysuptime" value only
240 when it's queried (any direct call to "sysuptime" is changed by a call to
243 2007-09-09 Frédéric Bernon, Bill Florac
244 * igmp.h, igmp.c, netif.h, netif.c, ip.c: To enable to have interfaces with IGMP,
245 and others without it, there is a new NETIF_FLAG_IGMP flag to set in netif->flags
246 if you want IGMP on an interface. igmp_stop() is now called inside netif_remove().
247 igmp_report_groups() is now called inside netif_set_link_up() (need to have
248 LWIP_NETIF_LINK_CALLBACK=1) to resend reports once the link is up (avoid to wait
249 the next query message to receive the matching multicast streams).
251 2007-09-08 Frédéric Bernon
252 * sockets.c, ip.h, api.h, tcp.h: declare a "struct ip_pcb" which only contains
253 IP_PCB. Add in the netconn's "pcb" union a "struct ip_pcb *ip;" (no size change).
254 Use this new field to access to common pcb fields (ttl, tos, so_options, etc...).
255 Enable to access to these fields with LWIP_TCP=0.
257 2007-09-05 Frédéric Bernon
258 * udp.c, ipv4/icmp.c, ipv4/ip.c, ipv6/icmp.c, ipv6/ip6.c, ipv4/icmp.h,
259 ipv6/icmp.h, opt.h: Integrate "task #7272 : LWIP_ICMP option". The new option
260 LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default).
261 Be careful, disabling ICMP make your product non-compliant to RFC1122, but
262 help to reduce footprint, and to reduce "visibility" on the Internet.
264 2007-09-05 Frédéric Bernon, Bill Florac
265 * opt.h, sys.h, tcpip.c, slipif.c, ppp.c, sys_arch.txt: Change parameters list
266 for sys_thread_new (see "task #7252 : Create sys_thread_new_ex()"). Two new
267 parameters have to be provided: a task name, and a task stack size. For this
268 one, since it's platform dependant, you could define the best one for you in
269 your lwipopts.h. For port maintainers, you can just add these new parameters
270 in your sys_arch.c file, and but it's not mandatory, use them in your OS
273 2007-09-05 Frédéric Bernon
274 * inet.c, autoip.c, msg_in.c, msg_out.c, init.c: Move some build time checkings
275 inside init.c for task #7142 "Sanity check user-configurable values".
277 2007-09-04 Frédéric Bernon, Bill Florac
278 * igmp.h, igmp.c, memp_std.h, memp.c, init.c, opt.h: Replace mem_malloc call by
279 memp_malloc, and use a new MEMP_NUM_IGMP_GROUP option (see opt.h to define the
280 value). It will avoid potential fragmentation problems, use a counter to know
281 how many times a group is used on an netif, and free it when all applications
282 leave it. MEMP_NUM_IGMP_GROUP got 8 as default value (and init.c got a sanity
283 check if LWIP_IGMP!=0).
285 2007-09-03 Frédéric Bernon
286 * igmp.h, igmp.c, sockets.c, api_msg.c: Changes for "#20503 IGMP Improvement".
287 Initialize igmp_mac_filter to NULL in netif_add (this field should be set in
288 the netif's "init" function). Use the "imr_interface" field (for socket layer)
289 and/or the "interface" field (for netconn layer), for join/leave operations.
290 The igmp_join/leavegroup first parameter change from a netif to an ipaddr.
291 This field could be a netif's ipaddr, or "any" (same meaning than ip_addr_isany).
293 2007-08-30 Frédéric Bernon
294 * Add netbuf.h, netbuf.c, Change api.h, api_lib.c: #7249 "Split netbuf functions
295 from api/api_lib". Now netbuf API is independant of netconn, and can be used
296 with other API (application based on raw API, or future "socket2" API). Ports
297 maintainers just have to add src/api/netbuf.c in their makefile/projects.
299 2007-08-30 Frédéric Bernon, Jonathan Larmour
300 * init.c: Add first version of lwip_sanity_check for task #7142 "Sanity check
301 user-configurable values".
303 2007-08-29 Frédéric Bernon
304 * igmp.h, igmp.c, tcpip.c, init.c, netif.c: change igmp_init and add igmp_start.
305 igmp_start is call inside netif_add. Now, igmp initialization is in the same
306 spirit than the others modules. Modify some IGMP debug traces.
308 2007-08-29 Frédéric Bernon
309 * Add init.h, init.c, Change opt.h, tcpip.c: Task #7213 "Add a lwip_init function"
310 Add lwip_init function to regroup all modules initializations, and to provide
311 a place to add code for task #7142 "Sanity check user-configurable values".
312 Ports maintainers should remove direct initializations calls from their code,
313 and add init.c in their makefiles. Note that lwip_init() function is called
314 inside tcpip_init, but can also be used by raw api users since all calls are
315 disabled when matching options are disabled. Also note that their is new options
316 in opt.h, you should configure in your lwipopts.h (they are enabled per default).
318 2007-08-26 Marc Boucher
319 * api_msg.c: do_close_internal(): Reset the callbacks and arg (conn) to NULL
320 since they can under certain circumstances be called with an invalid conn
321 pointer after the connection has been closed (and conn has been freed).
323 2007-08-25 Frédéric Bernon (Artem Migaev's Patch)
324 * netif.h, netif.c: Integrate "patch #6163 : Function to check if link layer is up".
325 Add a netif_is_link_up() function if LWIP_NETIF_LINK_CALLBACK option is set.
327 2007-08-22 Frédéric Bernon
328 * netif.h, netif.c, opt.h: Rename LWIP_NETIF_CALLBACK in LWIP_NETIF_STATUS_CALLBACK
329 to be coherent with new LWIP_NETIF_LINK_CALLBACK option before next release.
331 2007-08-22 Frédéric Bernon
332 * tcpip.h, tcpip.c, ethernetif.c, opt.h: remove options ETHARP_TCPIP_INPUT &
333 ETHARP_TCPIP_ETHINPUT, now, only "ethinput" code is supported, even if the
334 name is tcpip_input (we keep the name of 1.2.0 function).
336 2007-08-17 Jared Grubb
337 * memp_std.h, memp.h, memp.c, mem.c, stats.c: (Task #7136) Centralize mempool
338 settings into new memp_std.h and optional user file lwippools.h. This adds
339 more dynamic mempools, and allows the user to create an arbitrary number of
340 mempools for mem_malloc.
342 2007-08-16 Marc Boucher
343 * api_msg.c: Initialize newconn->state to NETCONN_NONE in accept_function;
344 otherwise it was left to NETCONN_CLOSE and sent_tcp() could prematurely
345 close the connection.
347 2007-08-16 Marc Boucher
348 * sockets.c: lwip_accept(): check netconn_peer() error return.
350 2007-08-16 Marc Boucher
351 * mem.c, mem.h: Added mem_calloc().
353 2007-08-16 Marc Boucher
354 * tcpip.c, tcpip.h memp.c, memp.h: Added distinct memp (MEMP_TCPIP_MSG_INPKT)
355 for input packets to prevent floods from consuming all of MEMP_TCPIP_MSG
356 and starving other message types.
357 Renamed MEMP_TCPIP_MSG to MEMP_TCPIP_MSG_API
359 2007-08-16 Marc Boucher
360 * pbuf.c, pbuf.h, etharp.c, tcp_in.c, sockets.c: Split pbuf flags in pbuf
361 type and flgs (later renamed to flags).
362 Use enum pbuf_flag as pbuf_type. Renumber PBUF_FLAG_*.
363 Improved lwip_recvfrom(). TCP push now propagated.
365 2007-08-16 Marc Boucher
366 * ethernetif.c, contrib/ports/various: ethbroadcast now a shared global
369 2007-08-16 Marc Boucher
370 * ppp_oe.c ppp_oe.h, auth.c chap.c fsm.c lcp.c ppp.c ppp.h,
371 etharp.c ethernetif.c, etharp.h, opt.h tcpip.h, tcpip.c:
372 Added PPPoE support and various PPP improvements.
374 2007-07-25 Simon Goldschmidt
375 * api_lib.c, ip_frag.c, pbuf.c, api.h, pbuf.h: Introduced pbuf_copy_partial,
376 making netbuf_copy_partial use this function.
378 2007-07-25 Simon Goldschmidt
379 * tcp_in.c: Fix bug #20506: Slow start / initial congestion window starts with
380 2 * mss (instead of 1 * mss previously) to comply with some newer RFCs and
383 2007-07-13 Jared Grubb (integrated by Frédéric Bernon)
384 * opt.h, netif.h, netif.c, ethernetif.c: Add new configuration option to add
385 a link callback in the netif struct, and functions to handle it. Be carefull
386 for port maintainers to add the NETIF_FLAG_LINK_UP flag (like in ethernetif.c)
387 if you want to be sure to be compatible with future changes...
389 2007-06-30 Frédéric Bernon
390 * sockets.h, sockets.c: Implement MSG_PEEK flag for recv/recvfrom functions.
392 2007-06-21 Simon Goldschmidt
393 * etharp.h, etharp.c: Combined etharp_request with etharp_raw for both
394 LWIP_AUTOIP =0 and =1 to remove redundant code.
396 2007-06-21 Simon Goldschmidt
397 * mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option
398 MEM_USE_POOLS to use 4 pools with different sized elements instead of a
399 heap. This both prevents memory fragmentation and gives a higher speed
400 at the cost of more memory consumption. Turned off by default.
402 2007-06-21 Simon Goldschmidt
403 * api_lib.c, api_msg.c, api.h, api_msg.h: Converted the length argument of
404 netconn_write (and therefore also api_msg_msg.msg.w.len) from u16_t into
405 int to be able to send a bigger buffer than 64K with one time (mainly
406 used from lwip_send).
408 2007-06-21 Simon Goldschmidt
409 * tcp.h, api_msg.c: Moved the nagle algorithm from netconn_write/do_write
410 into a define (tcp_output_nagle) in tcp.h to provide it to raw api users, too.
412 2007-06-21 Simon Goldschmidt
413 * api.h, api_lib.c, api_msg.c: Fixed bug #20021: Moved sendbuf-processing in
414 netconn_write from api_lib.c to api_msg.c to also prevent multiple context-
415 changes on low memory or empty send-buffer.
417 2007-06-18 Simon Goldschmidt
418 * etharp.c, etharp.h: Changed etharp to use a defined hardware address length
419 of 6 to avoid loading netif->hwaddr_len every time (since this file is only
420 used for ethernet and struct eth_addr already had a defined length of 6).
422 2007-06-17 Simon Goldschmidt
423 * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets
424 to disable UDP checksum generation on transmit.
426 2007-06-13 Frédéric Bernon, Simon Goldschmidt
427 * debug.h, api_msg.c: change LWIP_ERROR to use it to check errors like invalid
428 pointers or parameters, and let the possibility to redefined it in cc.h. Use
429 this macro to check "conn" parameter in api_msg.c functions.
431 2007-06-11 Simon Goldschmidt
432 * sockets.c, sockets.h: Added UDP lite support for sockets
434 2007-06-10 Simon Goldschmidt
435 * udp.h, opt.h, api_msg.c, ip.c, udp.c: Included switch LWIP_UDPLITE (enabled
436 by default) to switch off UDP-Lite support if not needed (reduces udp.c code
439 2007-06-09 Dominik Spies (integrated by Frédéric Bernon)
440 * autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h:
441 AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and
442 LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt
443 (see TODO mark in the source code).
445 2007-06-09 Simon Goldschmidt
446 * etharp.h, etharp.c, ethernetif.c: Modified order of parameters for
447 etharp_output() to match netif->output so etharp_output() can be used
448 directly as netif->output to save one function call.
450 2007-06-08 Simon Goldschmidt
451 * netif.h, ethernetif.c, slipif.c, loopif.c: Added define
452 NETIF_INIT_SNMP(netif, type, speed) to initialize per-netif snmp variables,
453 added initialization of those to ethernetif, slipif and loopif.
455 2007-05-18 Simon Goldschmidt
456 * opt.h, ip_frag.c, ip_frag.h, ip.c: Added option IP_FRAG_USES_STATIC_BUF
457 (defaulting to off for now) that can be set to 0 to send fragmented
458 packets by passing PBUF_REFs down the stack.
460 2007-05-23 Frédéric Bernon
461 * api_lib.c: Implement SO_RCVTIMEO for accept and recv on TCP
462 connections, such present in patch #5959.
464 2007-05-23 Frédéric Bernon
465 * api.h, api_lib.c, api_msg.c, sockets.c: group the different NETCONN_UDPxxx
466 code in only one part...
468 2007-05-18 Simon Goldschmidt
469 * opt.h, memp.h, memp.c: Added option MEMP_OVERFLOW_CHECK to check for memp
470 elements to overflow. This is achieved by adding some bytes before and after
471 each pool element (increasing their size, of course), filling them with a
472 prominent value and checking them on freeing the element.
473 Set it to 2 to also check every element in every pool each time memp_malloc()
474 or memp_free() is called (slower but more helpful).
476 2007-05-10 Simon Goldschmidt
477 * opt.h, memp.h, memp.c, pbuf.c (see task #6831): use a new memp pool for
478 PBUF_POOL pbufs instead of the old pool implementation in pbuf.c to reduce
481 2007-05-11 Frédéric Bernon
482 * sockets.c, api_lib.c, api_msg.h, api_msg.c, netifapi.h, netifapi.c, tcpip.c:
483 Include a function pointer instead of a table index in the message to reduce
484 footprint. Disable some part of lwip_send and lwip_sendto if some options are
485 not set (LWIP_TCP, LWIP_UDP, LWIP_RAW).
487 2007-05-10 Simon Goldschmidt
488 * *.h (except netif/ppp/*.h): Included patch #5448: include '#ifdef __cplusplus
489 \ extern "C" {' in all header files. Now you can write your application using
490 the lwIP stack in C++ and simply #include the core files. Note I have left
491 out the netif/ppp/*h header files for now, since I don't know which files are
492 included by applications and which are for internal use only.
494 2007-05-09 Simon Goldschmidt
495 * opt.h, *.c/*.h: Included patch #5920: Create define to override C-library
496 memcpy. 2 Defines are created: MEMCPY() for normal memcpy, SMEMCPY() for
497 situations where some compilers might inline the copy and save a function
498 call. Also replaced all calls to memcpy() with calls to (S)MEMCPY().
500 2007-05-08 Simon Goldschmidt
501 * mem.h: If MEM_LIBC_MALLOC==1, allow the defines (e.g. mem_malloc() -> malloc())
502 to be overriden in case the C-library malloc implementation is not protected
503 against concurrent access.
505 2007-05-04 Simon Goldschmidt (Atte Kojo)
506 * etharp.c: Introduced fast one-entry-cache to speed up ARP lookup when sending
507 multiple packets to the same host.
509 2007-05-04 Frédéric Bernon, Jonathan Larmour
510 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fix bug #19162 "lwip_sento: a possible
511 to corrupt remote addr/port connection state". Reduce problems "not enought memory" with
512 netbuf (if we receive lot of datagrams). Improve lwip_sendto (only one exchange between
513 sockets api and api_msg which run in tcpip_thread context). Add netconn_sento function.
514 Warning, if you directly access to "fromaddr" & "fromport" field from netbuf struct,
515 these fields are now renamed "addr" & "port".
517 2007-04-11 Jonathan Larmour
518 * sys.h, api_lib.c: Provide new sys_mbox_tryfetch function. Require ports to provide new
519 sys_arch_mbox_tryfetch function to get a message if one is there, otherwise return
520 with SYS_MBOX_EMPTY. sys_arch_mbox_tryfetch can be implemented as a function-like macro
521 by the port in sys_arch.h if desired.
523 2007-04-06 Frédéric Bernon, Simon Goldschmidt
524 * opt.h, tcpip.h, tcpip.c, netifapi.h, netifapi.c: New configuration option LWIP_NETIF_API
525 allow to use thread-safe functions to add/remove netif in list, and to start/stop dhcp
526 clients, using new functions from netifapi.h. Disable as default (no port change to do).
528 2007-04-05 Frédéric Bernon
529 * sockets.c: remplace ENOBUFS errors on alloc_socket by ENFILE to be more BSD compliant.
531 2007-04-04 Simon Goldschmidt
532 * arch.h, api_msg.c, dhcp.c, msg_in.c, sockets.c: Introduced #define LWIP_UNUSED_ARG(x)
533 use this for and architecture-independent form to tell the compiler you intentionally
534 are not using this variable. Can be overriden in cc.h.
536 2007-03-28 Frédéric Bernon
537 * opt.h, netif.h, dhcp.h, dhcp.c: New configuration option LWIP_NETIF_HOSTNAME allow to
538 define a hostname in netif struct (this is just a pointer, so, you can use a hardcoded
539 string, point on one of your's ethernetif field, or alloc a string you will free yourself).
540 It will be used by DHCP to register a client hostname, but can also be use when you call
543 2007-03-28 Frédéric Bernon
544 * netif.h, netif.c: A new NETIF_FLAG_ETHARP flag is defined in netif.h, to allow to
545 initialize a network interface's flag with. It tell this interface is an ethernet
546 device, and we can use ARP with it to do a "gratuitous ARP" (RFC 3220 "IP Mobility
547 Support for IPv4" section 4.6) when interface is "up" with netif_set_up().
549 2007-03-26 Frédéric Bernon, Jonathan Larmour
550 * opt.h, tcpip.c: New configuration option LWIP_ARP allow to disable ARP init at build
551 time if you only use PPP or SLIP. The default is enable. Note we don't have to call
552 etharp_init in your port's initilization sequence if you use tcpip.c, because this call
553 is done in tcpip_init function.
555 2007-03-22 Frédéric Bernon
556 * stats.h, stats.c, msg_in.c: Stats counters can be change to u32_t if necessary with the
557 new option LWIP_STATS_LARGE. If you need this option, define LWIP_STATS_LARGE to 1 in
558 your lwipopts.h. More, unused counters are not defined in the stats structs, and not
559 display by stats_display(). Note that some options (SYS_STATS and RAW_STATS) are defined
560 but never used. Fix msg_in.c with the correct #if test for a stat display.
562 2007-03-21 Kieran Mansley
563 * netif.c, netif.h: Apply patch#4197 with some changes (originator: rireland@hmgsl.com).
564 Provides callback on netif up/down state change.
566 2007-03-11 Frédéric Bernon, Mace Gael, Steve Reynolds
567 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, igmp.h, igmp.c,
568 ip.c, netif.h, tcpip.c, opt.h:
569 New configuration option LWIP_IGMP to enable IGMP processing. Based on only one
570 filter per all network interfaces. Declare a new function in netif to enable to
571 control the MAC filter (to reduce lwIP traffic processing).
573 2007-03-11 Frédéric Bernon
574 * tcp.h, tcp.c, sockets.c, tcp_out.c, tcp_in.c, opt.h: Keepalive values can
575 be configured at run time with LWIP_TCP_KEEPALIVE, but don't change this
576 unless you know what you're doing (default are RFC1122 compliant). Note
577 that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set in seconds.
579 2007-03-08 Frédéric Bernon
580 * tcp.h: Keepalive values can be configured at compile time, but don't change
581 this unless you know what you're doing (default are RFC1122 compliant).
583 2007-03-08 Frédéric Bernon
584 * sockets.c, api.h, api_lib.c, tcpip.c, sys.h, sys.c, err.c, opt.h:
585 Implement LWIP_SO_RCVTIMEO configuration option to enable/disable SO_RCVTIMEO
586 on UDP sockets/netconn.
588 2007-03-08 Simon Goldschmidt
589 * snmp_msg.h, msg_in.c: SNMP UDP ports can be configured at compile time.
591 2007-03-06 Frédéric Bernon
592 * api.h, api_lib.c, sockets.h, sockets.c, tcpip.c, sys.h, sys.c, err.h:
593 Implement SO_RCVTIMEO on UDP sockets/netconn.
595 2007-02-28 Kieran Mansley (based on patch from Simon Goldschmidt)
596 * api_lib.c, tcpip.c, memp.c, memp.h: make API msg structs allocated
597 on the stack and remove the API msg type from memp
599 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
600 * sockets.h, sockets.c: Move socket initialization to new
601 lwip_socket_init() function.
602 NOTE: this changes the API with ports. Ports will have to be
603 updated to call lwip_socket_init() now.
605 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
606 * api_lib.c: Use memcpy in netbuf_copy_partial.
611 2008-03-17 Frédéric Bernon, Ed Kerekes
612 * igmp.h, igmp.c: Fix bug #22613 "IGMP iphdr problem" (could have
613 some problems to fill the IP header on some targets, use now the
614 ip.h macros to do it).
616 2008-03-13 Frédéric Bernon
617 * sockets.c: Fix bug #22435 "lwip_recvfrom with TCP break;". Using
618 (lwip_)recvfrom with valid "from" and "fromlen" parameters, on a
619 TCP connection caused a crash. Note that using (lwip_)recvfrom
620 like this is a bit slow and that using (lwip)getpeername is the
621 good lwip way to do it (so, using recv is faster on tcp sockets).
623 2008-03-12 Frédéric Bernon, Jonathan Larmour
624 * api_msg.c, contrib/apps/ping.c: Fix bug #22530 "api_msg.c's
625 recv_raw() does not consume data", and the ping sample (with
626 LWIP_SOCKET=1, the code did the wrong supposition that lwip_recvfrom
627 returned the IP payload, without the IP header).
629 2008-03-04 Jonathan Larmour
630 * mem.c, stats.c, mem.h: apply patch #6414 to avoid compiler errors
631 and/or warnings on some systems where mem_size_t and size_t differ.
632 * pbuf.c, ppp.c: Fix warnings on some systems with mem_malloc.
634 2008-03-04 Kieran Mansley (contributions by others)
635 * Numerous small compiler error/warning fixes from contributions to
636 mailing list after 1.3.0 release candidate made.
638 2008-01-25 Cui hengbin (integrated by Frédéric Bernon)
639 * dns.c: Fix bug #22108 "DNS problem" caused by unaligned structures.
641 2008-01-15 Kieran Mansley
642 * tcp_out.c: BUG20511. Modify persist timer to start when we are
643 prevented from sending by a small send window, not just a zero
646 2008-01-09 Jonathan Larmour
647 * opt.h, ip.c: Rename IP_OPTIONS define to IP_OPTIONS_ALLOWED to avoid
648 conflict with Linux system headers.
650 2008-01-06 Jonathan Larmour
651 * dhcp.c: fix bug #19927: "DHCP NACK problem" by clearing any existing set IP
652 address entirely on receiving a DHCPNAK, and restarting discovery.
654 2007-12-21 Simon Goldschmidt
655 * sys.h, api_lib.c, api_msg.c, sockets.c: fix bug #21698: "netconn->recv_avail
656 is not protected" by using new macros for interlocked access to modify/test
659 2007-12-20 Kieran Mansley (based on patch from Oleg Tyshev)
660 * tcp_in.c: fix bug# 21535 (nrtx not reset correctly in SYN_SENT state)
662 2007-12-20 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
663 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: fix bug #20199 (better handling
664 of silly window avoidance and prevent lwIP from shrinking the window)
666 2007-12-04 Simon Goldschmidt
667 * tcp.c, tcp_in.c: fix bug #21699 (segment leak in ooseq processing when last
668 data packet was lost): add assert that all segment lists are empty in
669 tcp_pcb_remove before setting pcb to CLOSED state; don't directly set CLOSED
670 state from LAST_ACK in tcp_process
672 2007-12-02 Simon Goldschmidt
673 * sockets.h: fix bug #21654: exclude definition of struct timeval from #ifndef FD_SET
674 If including <sys/time.h> for system-struct timeval, LWIP_TIMEVAL_PRIVATE now
675 has to be set to 0 in lwipopts.h
677 2007-12-02 Simon Goldschmidt
678 * api_msg.c, api_lib.c: fix bug #21656 (recvmbox problem in netconn API): always
679 allocate a recvmbox in netconn_new_with_proto_and_callback. For a tcp-listen
680 netconn, this recvmbox is later freed and a new mbox is allocated for acceptmbox.
681 This is a fix for thread-safety and allocates all items needed for a netconn
682 when the netconn is created.
684 2007-11-30 Simon Goldschmidt
685 * udp.c: first attempt to fix bug #21655 (DHCP doesn't work reliably with multiple
686 netifs): if LWIP_DHCP is enabled, UDP packets to DHCP_CLIENT_PORT are passed
687 to netif->dhcp->pcb only (if that exists) and not to any other pcb for the same
688 port (only solution to let UDP pcbs 'bind' to a netif instead of an IP address)
690 2007-11-27 Simon Goldschmidt
691 * ip.c: fixed bug #21643 (udp_send/raw_send don't fail if netif is down) by
692 letting ip_route only use netifs that are up.
694 2007-11-27 Simon Goldschmidt
695 * err.h, api_lib.c, api_msg.c, sockets.c: Changed error handling: ERR_MEM, ERR_BUF
696 and ERR_RTE are seen as non-fatal, all other errors are fatal. netconns and
697 sockets block most operations once they have seen a fatal error.
699 2007-11-27 Simon Goldschmidt
700 * udp.h, udp.c, dhcp.c: Implemented new function udp_sendto_if which takes the
701 netif to send as an argument (to be able to send on netifs that are down).
703 2007-11-26 Simon Goldschmidt
704 * tcp_in.c: Fixed bug #21582: pcb->acked accounting can be wrong when ACKs
707 2007-11-21 Simon Goldschmidt
708 * tcp.h, tcp_out.c, api_msg.c: Fixed bug #20287: tcp_output_nagle sends too early
709 Fixed the nagle algorithm; nagle now also works for all raw API applications
710 and has to be explicitly disabled with 'tcp_pcb->flags |= TF_NODELAY'
712 2007-11-12 Frédéric Bernon
713 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fixed bug #20900. Now, most
714 of the netconn_peer and netconn_addr processing is done inside tcpip_thread
715 context in do_getaddr.
717 2007-11-10 Simon Goldschmidt
718 * etharp.c: Fixed bug: assert fired when MEMP_ARP_QUEUE was empty (which can
719 happen any time). Now the packet simply isn't enqueued when out of memory.
721 2007-11-01 Simon Goldschmidt
722 * tcp.c, tcp_in.c: Fixed bug #21494: The send mss (pcb->mss) is set to 536 (or
723 TCP_MSS if that is smaller) as long as no MSS option is received from the
726 2007-11-01 Simon Goldschmidt
727 * tcp.h, tcp.c, tcp_in.c: Fixed bug #21491: The MSS option sent (with SYN)
728 is now based on TCP_MSS instead of pcb->mss (on passive open now effectively
729 sending our configured TCP_MSS instead of the one received).
731 2007-11-01 Simon Goldschmidt
732 * tcp_in.c: Fixed bug #21181: On active open, the initial congestion window was
733 calculated based on the configured TCP_MSS, not on the MSS option received
736 2007-10-09 Simon Goldschmidt
737 * udp.c, inet.c, inet.h: Fixed UDPLite: send: Checksum was always generated too
738 short and also was generated wrong if checksum coverage != tot_len;
739 receive: checksum was calculated wrong if checksum coverage != tot_len
741 2007-10-08 Simon Goldschmidt
742 * mem.c: lfree was not updated in mem_realloc!
744 2007-10-07 Frédéric Bernon
745 * sockets.c, api.h, api_lib.c: First step to fix "bug #20900 : Potential
746 crash error problem with netconn_peer & netconn_addr". VERY IMPORTANT:
747 this change cause an API breakage for netconn_addr, since a parameter
748 type change. Any compiler should cause an error without any changes in
749 yours netconn_peer calls (so, it can't be a "silent change"). It also
750 reduce a little bit the footprint for socket layer (lwip_getpeername &
751 lwip_getsockname use now a common lwip_getaddrname function since
752 netconn_peer & netconn_addr have the same parameters).
754 2007-09-20 Simon Goldschmidt
755 * tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state)
756 by checking tcp_tw_pcbs also
758 2007-09-19 Simon Goldschmidt
759 * icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
761 2007-09-15 Mike Kleshov
762 * mem.c: Fixed bug #21077 (inaccuracy in calculation of lwip_stat.mem.used)
764 2007-09-06 Frédéric Bernon
765 * several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
766 it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
767 already include "lwip/arch.h"). Like that, default defines are provided by "lwip/arch.h"
768 if they are not defined in cc.h, in the same spirit than "lwip/opt.h" for lwipopts.h.
770 2007-08-30 Frédéric Bernon
771 * igmp.h, igmp.c: Some changes to remove some redundant code, add some traces,
772 and fix some coding style.
774 2007-08-28 Frédéric Bernon
775 * tcpip.c: Fix TCPIP_MSG_INPKT processing: now, tcpip_input can be used for any
776 kind of packets. These packets are considered like Ethernet packets (payload
777 pointing to ethhdr) if the netif got the NETIF_FLAG_ETHARP flag. Else, packets
778 are considered like IP packets (payload pointing to iphdr).
780 2007-08-27 Frédéric Bernon
781 * api.h, api_lib.c, api_msg.c: First fix for "bug #20900 : Potential crash error
782 problem with netconn_peer & netconn_addr". Introduce NETCONN_LISTEN netconn_state
783 and remove obsolete ones (NETCONN_RECV & NETCONN_ACCEPT).
785 2007-08-24 Kieran Mansley
786 * inet.c Modify (acc >> 16) test to ((acc >> 16) != 0) to help buggy
787 compiler (Paradigm C++)
789 2007-08-09 Frédéric Bernon, Bill Florac
790 * stats.h, stats.c, igmp.h, igmp.c, opt.h: Fix for bug #20503 : IGMP Improvement.
791 Introduce IGMP_STATS to centralize statistics management.
793 2007-08-09 Frédéric Bernon, Bill Florac
794 * udp.c: Fix for bug #20503 : IGMP Improvement. Enable to receive a multicast
795 packet on a udp pcb binded on an netif's IP address, and not on "any".
797 2007-08-09 Frédéric Bernon, Bill Florac
798 * igmp.h, igmp.c, ip.c: Fix minor changes from bug #20503 : IGMP Improvement.
799 This is mainly on using lookup/lookfor, and some coding styles...
801 2007-07-26 Frédéric Bernon (and "thedoctor")
802 * igmp.c: Fix bug #20595 to accept IGMPv3 "Query" messages.
804 2007-07-25 Simon Goldschmidt
805 * api_msg.c, tcp.c: Another fix for bug #20021: by not returning an error if
806 tcp_output fails in tcp_close, the code in do_close_internal gets simpler
807 (tcp_output is called again later from tcp timers).
809 2007-07-25 Simon Goldschmidt
810 * ip_frag.c: Fixed bug #20429: use the new pbuf_copy_partial instead of the old
811 copy_from_pbuf, which illegally modified the given pbuf.
813 2007-07-25 Simon Goldschmidt
814 * tcp_out.c: tcp_enqueue: pcb->snd_queuelen didn't work for chaine PBUF_RAMs:
815 changed snd_queuelen++ to snd_queuelen += pbuf_clen(p).
817 2007-07-24 Simon Goldschmidt
818 * api_msg.c, tcp.c: Fix bug #20480: Check the pcb passed to tcp_listen() for the
819 correct state (must be CLOSED).
821 2007-07-13 Thomas Taranowski (commited by Jared Grubb)
822 * memp.c: Fix bug #20478: memp_malloc returned NULL+MEMP_SIZE on failed
823 allocation. It now returns NULL.
825 2007-07-13 Frédéric Bernon
826 * api_msg.c: Fix bug #20318: api_msg "recv" callbacks don't call pbuf_free in
829 2007-07-13 Frédéric Bernon
830 * api_msg.c: Fix bug #20315: possible memory leak problem if tcp_listen failed,
831 because current code doesn't follow rawapi.txt documentation.
833 2007-07-13 Kieran Mansley
834 * src/core/tcp_in.c Apply patch#5741 from Oleg Tyshev to fix bug in
835 out of sequence processing of received packets
837 2007-07-03 Simon Goldschmidt
838 * nearly-all-files: Added assertions where PBUF_RAM pbufs are used and an
839 assumption is made that this pbuf is in one piece (i.e. not chained). These
840 assumptions clash with the possibility of converting to fully pool-based
841 pbuf implementations, where PBUF_RAM pbufs might be chained.
843 2007-07-03 Simon Goldschmidt
844 * api.h, api_lib.c, api_msg.c: Final fix for bug #20021 and some other problems
845 when closing tcp netconns: removed conn->sem, less context switches when
846 closing, both netconn_close and netconn_delete should safely close tcp
849 2007-07-02 Simon Goldschmidt
850 * ipv4/ip.h, ipv6/ip.h, opt.h, netif.h, etharp.h, ipv4/ip.c, netif.c, raw.c,
851 tcp_out.c, udp.c, etharp.c: Added option LWIP_NETIF_HWADDRHINT (default=off)
852 to cache ARP table indices with each pcb instead of single-entry cache for
855 2007-07-02 Simon Goldschmidt
856 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Added some ASSERTS and casts to prevent
857 warnings when assigning to smaller types.
859 2007-06-28 Simon Goldschmidt
860 * tcp_out.c: Added check to prevent tcp_pcb->snd_queuelen from overflowing.
862 2007-06-28 Simon Goldschmidt
863 * tcp.h: Fixed bug #20287: Fixed nagle algorithm (sending was done too early if
864 a segment contained chained pbufs)
866 2007-06-28 Frédéric Bernon
867 * autoip.c: replace most of rand() calls by a macro LWIP_AUTOIP_RAND which compute
868 a "pseudo-random" value based on netif's MAC and some autoip fields. It's always
869 possible to define this macro in your own lwipopts.h to always use C library's
870 rand(). Note that autoip_create_rand_addr doesn't use this macro.
872 2007-06-28 Frédéric Bernon
873 * netifapi.h, netifapi.c, tcpip.h, tcpip.c: Update code to handle the option
874 LWIP_TCPIP_CORE_LOCKING, and do some changes to be coherent with last modifications
875 in api_lib/api_msg (use pointers and not type with table, etc...)
877 2007-06-26 Simon Goldschmidt
878 * udp.h: Fixed bug #20259: struct udp_hdr was lacking the packin defines.
880 2007-06-25 Simon Goldschmidt
881 * udp.c: Fixed bug #20253: icmp_dest_unreach was called with a wrong p->payload
882 for udp packets with no matching pcb.
884 2007-06-25 Simon Goldschmidt
885 * udp.c: Fixed bug #20220: UDP PCB search in udp_input(): a non-local match
886 could get udp input packets if the remote side matched.
888 2007-06-13 Simon Goldschmidt
889 * netif.c: Fixed bug #20180 (TCP pcbs listening on IP_ADDR_ANY could get
890 changed in netif_set_ipaddr if previous netif->ip_addr.addr was 0.
892 2007-06-13 Simon Goldschmidt
893 * api_msg.c: pcb_new sets conn->err if protocol is not implemented
894 -> netconn_new_..() does not allocate a new connection for unsupported
897 2007-06-13 Frédéric Bernon, Simon Goldschmidt
898 * api_lib.c: change return expression in netconn_addr and netconn_peer, because
899 conn->err was reset to ERR_OK without any reasons (and error was lost)...
901 2007-06-13 Frédéric Bernon, Matthias Weisser
902 * opt.h, mem.h, mem.c, memp.c, pbuf.c, ip_frag.c, vj.c: Fix bug #20162. Rename
903 MEM_ALIGN in LWIP_MEM_ALIGN and MEM_ALIGN_SIZE in LWIP_MEM_ALIGN_SIZE to avoid
904 some macro names collision with some OS macros.
906 2007-06-11 Simon Goldschmidt
907 * udp.c: UDP Lite: corrected the use of chksum_len (based on RFC3828: if it's 0,
908 create checksum over the complete packet. On RX, if it's < 8 (and not 0),
909 discard the packet. Also removed the duplicate 'udphdr->chksum = 0' for both
912 2007-06-11 Srinivas Gollakota & Oleg Tyshev
913 * tcp_out.c: Fix for bug #20075 : "A problem with keep-alive timer and TCP flags"
914 where TCP flags wasn't initialized in tcp_keepalive.
916 2007-06-03 Simon Goldschmidt
917 * udp.c: udp_input(): Input pbuf was not freed if pcb had no recv function
918 registered, p->payload was modified without modifying p->len if sending
919 icmp_dest_unreach() (had no negative effect but was definitively wrong).
921 2007-06-03 Simon Goldschmidt
922 * icmp.c: Corrected bug #19937: For responding to an icmp echo request, icmp
923 re-used the input pbuf even if that didn't have enough space to include the
924 link headers. Now the space is tested and a new pbuf is allocated for the
925 echo response packet if the echo request pbuf isn't big enough.
927 2007-06-01 Simon Goldschmidt
928 * sockets.c: Checked in patch #5914: Moved sockopt processing into tcpip_thread.
930 2007-05-23 Frédéric Bernon
931 * api_lib.c, sockets.c: Fixed bug #5958 for netconn_listen (acceptmbox only
932 allocated by do_listen if success) and netconn_accept errors handling. In
933 most of api_lib functions, we replace some errors checkings like "if (conn==NULL)"
934 by ASSERT, except for netconn_delete.
936 2007-05-23 Frédéric Bernon
937 * api_lib.c: Fixed bug #5957 "Safe-thread problem inside netconn_recv" to return
938 an error code if it's impossible to fetch a pbuf on a TCP connection (and not
939 directly close the recvmbox).
941 2007-05-22 Simon Goldschmidt
942 * tcp.c: Fixed bug #1895 (tcp_bind not correct) by introducing a list of
943 bound but unconnected (and non-listening) tcp_pcbs.
945 2007-05-22 Frédéric Bernon
946 * sys.h, sys.c, api_lib.c, tcpip.c: remove sys_mbox_fetch_timeout() (was only
947 used for LWIP_SO_RCVTIMEO option) and use sys_arch_mbox_fetch() instead of
948 sys_mbox_fetch() in api files. Now, users SHOULD NOT use internal lwIP features
949 like "sys_timeout" in their application threads.
951 2007-05-22 Frédéric Bernon
952 * api.h, api_lib.c, api_msg.h, api_msg.c: change the struct api_msg_msg to see
953 which parameters are used by which do_xxx function, and to avoid "misusing"
954 parameters (patch #5938).
956 2007-05-22 Simon Goldschmidt
957 * api_lib.c, api_msg.c, raw.c, api.h, api_msg.h, raw.h: Included patch #5938:
958 changed raw_pcb.protocol from u16_t to u8_t since for IPv4 and IPv6, proto
959 is only 8 bits wide. This affects the api, as there, the protocol was
962 2007-05-18 Simon Goldschmidt
963 * memp.c: addition to patch #5913: smaller pointer was returned but
964 memp_memory was the same size -> did not save memory.
966 2007-05-16 Simon Goldschmidt
967 * loopif.c, slipif.c: Fix bug #19729: free pbuf if netif->input() returns
970 2007-05-16 Simon Goldschmidt
971 * api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same
972 as the one of the netif used for sending to prevent sending from old
973 addresses after a netif address gets changed (partly fixes bug #3168).
975 2007-05-16 Frédéric Bernon
976 * tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work
977 with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in
978 tcpip_init) because we have to be sure that network interfaces are already
979 added (mac filter is updated only in igmp_init for the moment).
981 2007-05-16 Simon Goldschmidt
982 * mem.c, memp.c: Removed semaphores from memp, changed sys_sem_wait calls
983 into sys_arch_sem_wait calls to prevent timers from running while waiting
984 for the heap. This fixes bug #19167.
986 2007-05-13 Simon Goldschmidt
987 * tcp.h, sockets.h, sockets.c: Fixed bug from patch #5865 by moving the defines
988 for socket options (lwip_set/-getsockopt) used with level IPPROTO_TCP from
991 2007-05-07 Simon Goldschmidt
992 * mem.c: Another attempt to fix bug #17922.
994 2007-05-04 Simon Goldschmidt
995 * pbuf.c, pbuf.h, etharp.c: Further update to ARP queueing: Changed pbuf_copy()
996 implementation so that it can be reused (don't allocate the target
997 pbuf inside pbuf_copy()).
999 2007-05-04 Simon Goldschmidt
1000 * memp.c: checked in patch #5913: in memp_malloc() we can return memp as mem
1001 to save a little RAM (next pointer of memp is not used while not in pool).
1004 * sockets.c: Fix ioctl FIONREAD when some data remains from last recv.
1007 2007-04-23 Simon Goldschmidt
1008 * loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results
1009 in NULL reference for incoming TCP packets". Loopif has to be configured
1010 (using LWIP_LOOPIF_MULTITHREADING) to directly call netif->input()
1011 (multithreading environments, e.g. netif->input() = tcpip_input()) or
1012 putting packets on a list that is fed to the stack by calling loopif_poll()
1013 (single-thread / NO_SYS / polling environment where e.g.
1014 netif->input() = ip_input).
1016 2007-04-17 Jonathan Larmour
1017 * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold
1018 the difference between two u16_t's.
1019 * sockets.h: FD_SETSIZE needs to match number of sockets, which is
1020 MEMP_NUM_NETCONN in sockets.c right now.
1022 2007-04-12 Jonathan Larmour
1023 * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580).
1025 2007-04-12 Kieran Mansley
1026 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Modify way the retransmission
1027 timer is reset to fix bug#19434, with help from Oleg Tyshev.
1029 2007-04-11 Simon Goldschmidt
1030 * etharp.c, pbuf.c, pbuf.h: 3rd fix for bug #11400 (arp-queuing): More pbufs than
1031 previously thought need to be copied (everything but PBUF_ROM!). Cleaned up
1032 pbuf.c: removed functions no needed any more (by etharp).
1034 2007-04-11 Kieran Mansley
1035 * inet.c, ip_addr.h, sockets.h, sys.h, tcp.h: Apply patch #5745: Fix
1036 "Constant is long" warnings with 16bit compilers. Contributed by
1037 avatar@mmlab.cse.yzu.edu.tw
1039 2007-04-05 Frédéric Bernon, Jonathan Larmour
1040 * api_msg.c: Fix bug #16830: "err_tcp() posts to connection mailbox when no pend on
1041 the mailbox is active". Now, the post is only done during a connect, and do_send,
1042 do_write and do_join_leave_group don't do anything if a previous error was signaled.
1044 2007-04-03 Frédéric Bernon
1045 * ip.c: Don't set the IP_DF ("Don't fragment") flag in the IP header in IP output
1046 packets. See patch #5834.
1048 2007-03-30 Frédéric Bernon
1049 * api_msg.c: add a "pcb_new" helper function to avoid redundant code, and to add
1050 missing pcb allocations checking (in do_bind, and for each raw_new). Fix style.
1052 2007-03-30 Frédéric Bernon
1053 * most of files: prefix all debug.h define with "LWIP_" to avoid any conflict with
1054 others environment defines (these were too "generic").
1056 2007-03-28 Frédéric Bernon
1057 * api.h, api_lib.c, sockets.c: netbuf_ref doesn't check its internal pbuf_alloc call
1058 result and can cause a crash. lwip_send now check netbuf_ref result.
1060 2007-03-28 Simon Goldschmidt
1061 * sockets.c Remove "#include <errno.h>" from sockets.c to avoid multiple
1062 definition of macros (in errno.h and lwip/arch.h) if LWIP_PROVIDE_ERRNO is
1063 defined. This is the way it should have been already (looking at
1066 2007-03-28 Kieran Mansley
1067 * opt.h Change default PBUF_POOL_BUFSIZE (again) to accomodate default MSS +
1068 IP and TCP headers *and* physical link headers
1070 2007-03-26 Frédéric Bernon (based on patch from Dmitry Potapov)
1071 * api_lib.c: patch for netconn_write(), fixes a possible race condition which cause
1072 to send some garbage. It is not a definitive solution, but the patch does solve
1073 the problem for most cases.
1075 2007-03-22 Frédéric Bernon
1076 * api_msg.h, api_msg.c: Remove obsolete API_MSG_ACCEPT and do_accept (never used).
1078 2007-03-22 Frédéric Bernon
1079 * api_lib.c: somes resources couldn't be freed if there was errors during
1080 netconn_new_with_proto_and_callback.
1082 2007-03-22 Frédéric Bernon
1083 * ethernetif.c: update netif->input calls to check return value. In older ports,
1084 it's a good idea to upgrade them, even if before, there could be another problem
1085 (access to an uninitialized mailbox).
1087 2007-03-21 Simon Goldschmidt
1088 * sockets.c: fixed bug #5067 (essentialy a signed/unsigned warning fixed
1089 by casting to unsigned).
1091 2007-03-21 Frédéric Bernon
1092 * api_lib.c, api_msg.c, tcpip.c: integrate sys_mbox_fetch(conn->mbox, NULL) calls from
1093 api_lib.c to tcpip.c's tcpip_apimsg(). Now, use a local variable and not a
1094 dynamic one from memp to send tcpip_msg to tcpip_thread in a synchrone call.
1095 Free tcpip_msg from tcpip_apimsg is not done in tcpip_thread. This give a
1096 faster and more reliable communication between api_lib and tcpip.
1098 2007-03-21 Frédéric Bernon
1099 * opt.h: Add LWIP_NETIF_CALLBACK (to avoid compiler warning) and set it to 0.
1101 2007-03-21 Frédéric Bernon
1102 * api_msg.c, igmp.c, igmp.h: Fix C++ style comments
1104 2007-03-21 Kieran Mansley
1105 * opt.h Change default PBUF_POOL_BUFSIZE to accomodate default MSS +
1108 2007-03-21 Kieran Mansley
1109 * Fix all uses of pbuf_header to check the return value. In some
1110 cases just assert if it fails as I'm not sure how to fix them, but
1111 this is no worse than before when they would carry on regardless
1114 2007-03-21 Kieran Mansley
1115 * sockets.c, igmp.c, igmp.h, memp.h: Fix C++ style comments and
1116 comment out missing header include in icmp.c
1118 2007-03-20 Frédéric Bernon
1119 * memp.h, stats.c: Fix stats_display function where memp_names table wasn't
1120 synchronized with memp.h.
1122 2007-03-20 Frédéric Bernon
1123 * tcpip.c: Initialize tcpip's mbox, and verify if initialized in tcpip_input,
1124 tcpip_ethinput, tcpip_callback, tcpip_apimsg, to fix a init problem with
1125 network interfaces. Also fix a compiler warning.
1127 2007-03-20 Kieran Mansley
1128 * udp.c: Only try and use pbuf_header() to make space for headers if
1129 not a ROM or REF pbuf.
1131 2007-03-19 Frédéric Bernon
1132 * api_msg.h, api_msg.c, tcpip.h, tcpip.c: Add return types to tcpip_apimsg()
1135 2007-03-19 Frédéric Bernon
1136 * Remove unimplemented "memp_realloc" function from memp.h.
1138 2007-03-11 Simon Goldschmidt
1139 * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused
1142 2007-03-11 Simon Goldschmidt (based on patch from Dmitry Potapov)
1143 * api_lib.c, sockets.c, api.h, api_msg.h, sockets.h: Fixed bug #19251
1144 (missing `const' qualifier in socket functions), to get more compatible to
1145 standard POSIX sockets.
1147 2007-03-11 Frédéric Bernon (based on patch from Dmitry Potapov)
1148 * sockets.c: Add asserts inside bind, connect and sendto to check input
1149 parameters. Remove excessive set_errno() calls after get_socket(), because
1150 errno is set inside of get_socket(). Move last sock_set_errno() inside
1153 2007-03-09 Simon Goldschmidt
1154 * memp.c: Fixed bug #11400: New etharp queueing introduced bug: memp_memory
1155 was allocated too small.
1157 2007-03-06 Simon Goldschmidt
1158 * tcpip.c: Initialize dhcp timers in tcpip_thread (if LWIP_DHCP) to protect
1159 the stack from concurrent access.
1161 2007-03-06 Frédéric Bernon, Dmitry Potapov
1162 * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy
1163 call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().
1165 2007-03-06 Simon Goldschmidt
1166 * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files
1167 if IP_FRAG == 0 and IP_REASSEMBLY == 0
1169 2007-03-06 Frédéric Bernon, Simon Goldschmidt
1170 * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration
1171 option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput.
1172 Allow to do ARP processing for incoming packets inside tcpip_thread
1173 (protecting ARP layer against concurrent access). You can also disable
1174 old code using tcp_input with new define ETHARP_TCPIP_INPUT set to 0.
1175 Older ports have to use tcpip_ethinput.
1177 2007-03-06 Simon Goldschmidt (based on patch from Dmitry Potapov)
1178 * err.h, err.c: fixed compiler warning "initialization dircards qualifiers
1179 from pointer target type"
1181 2007-03-05 Frédéric Bernon
1182 * opt.h, sockets.h: add new configuration options (LWIP_POSIX_SOCKETS_IO_NAMES,
1183 ETHARP_TRUST_IP_MAC, review SO_REUSE)
1185 2007-03-04 Frédéric Bernon
1186 * api_msg.c: Remove some compiler warnings : parameter "pcb" was never
1189 2007-03-04 Frédéric Bernon
1190 * api_lib.c: Fix "[patch #5764] api_lib.c cleanup: after patch #5687" (from
1192 The api_msg struct stay on the stack (not moved to netconn struct).
1194 2007-03-04 Simon Goldschmidt (based on patch from Dmitry Potapov)
1195 * pbuf.c: Fix BUG#19168 - pbuf_free can cause deadlock (if
1196 SYS_LIGHTWEIGHT_PROT=1 & freeing PBUF_RAM when mem_sem is not available)
1197 Also fixed cast warning in pbuf_alloc()
1199 2007-03-04 Simon Goldschmidt
1200 * etharp.c, etharp.h, memp.c, memp.h, opt.h: Fix BUG#11400 - don't corrupt
1201 existing pbuf chain when enqueuing multiple pbufs to a pending ARP request
1203 2007-03-03 Frédéric Bernon
1204 * udp.c: remove obsolete line "static struct udp_pcb *pcb_cache = NULL;"
1205 It is static, and never used in udp.c except udp_init().
1207 2007-03-02 Simon Goldschmidt
1208 * tcpip.c: Moved call to ip_init(), udp_init() and tcp_init() from
1209 tcpip_thread() to tcpip_init(). This way, raw API connections can be
1210 initialized before tcpip_thread is running (e.g. before OS is started)
1212 2007-03-02 Frédéric Bernon
1213 * rawapi.txt: Fix documentation mismatch with etharp.h about etharp_tmr's call
1216 2007-02-28 Kieran Mansley
1217 * pbuf.c: Fix BUG#17645 - ensure pbuf payload pointer is not moved
1218 outside the region of the pbuf by pbuf_header()
1220 2007-02-28 Kieran Mansley
1221 * sockets.c: Fix BUG#19161 - ensure milliseconds timeout is non-zero
1222 when supplied timeout is also non-zero
1226 2006-12-05 Leon Woestenberg
1227 * CHANGELOG: Mention STABLE-1.2.0 release.
1231 2006-12-01 Christiaan Simons
1232 * mem.h, opt.h: Added MEM_LIBC_MALLOC option.
1233 Note this is a workaround. Currently I have no other options left.
1235 2006-10-26 Christiaan Simons (accepted patch by Jonathan Larmour)
1236 * ipv4/ip_frag.c: rename MAX_MTU to IP_FRAG_MAX_MTU and move define
1237 to include/lwip/opt.h.
1238 * ipv4/lwip/ip_frag.h: Remove unused IP_REASS_INTERVAL.
1239 Move IP_REASS_MAXAGE and IP_REASS_BUFSIZE to include/lwip/opt.h.
1240 * opt.h: Add above new options.
1242 2006-08-18 Christiaan Simons
1243 * tcp_{in,out}.c: added SNMP counters.
1244 * ipv4/ip.c: added SNMP counters.
1245 * ipv4/ip_frag.c: added SNMP counters.
1247 2006-08-08 Christiaan Simons
1248 * etharp.{c,h}: added etharp_find_addr() to read
1249 (stable) ethernet/IP address pair from ARP table
1251 2006-07-14 Christiaan Simons
1252 * mib_structs.c: added
1253 * include/lwip/snmp_structs.h: added
1254 * netif.{c,h}, netif/ethernetif.c: added SNMP statistics to netif struct
1256 2006-07-06 Christiaan Simons
1257 * snmp/asn1_{enc,dec}.c added
1259 * snmp/msg_{in,out}.c added
1260 * include/lwip/snmp_asn1.h added
1261 * include/lwip/snmp_msg.h added
1262 * doc/snmp_agent.txt added
1264 2006-03-29 Christiaan Simons
1265 * inet.c, inet.h: Added platform byteswap support.
1266 Added LWIP_PLATFORM_BYTESWAP define (defaults to 0) and
1267 optional LWIP_PLATFORM_HTONS(), LWIP_PLATFORM_HTONL() macros.
1271 2006-11-30 Christiaan Simons
1272 * dhcp.c: Fixed false triggers of request_timeout.
1274 2006-11-28 Christiaan Simons
1275 * netif.c: In netif_add() fixed missing clear of ip_addr, netmask, gw and flags.
1277 2006-10-11 Christiaan Simons
1278 * api_lib.c etharp.c, ip.c, memp.c, stats.c, sys.{c,h} tcp.h:
1279 Partially accepted patch #5449 for ANSI C compatibility / build fixes.
1280 * ipv4/lwip/ip.h ipv6/lwip/ip.h: Corrected UDP-Lite protocol
1281 identifier from 170 to 136 (bug #17574).
1283 2006-10-10 Christiaan Simons
1284 * api_msg.c: Fixed Nagle algorithm as reported by Bob Grice.
1286 2006-08-17 Christiaan Simons
1287 * udp.c: Fixed bug #17200, added check for broadcast
1288 destinations for PCBs bound to a unicast address.
1290 2006-08-07 Christiaan Simons
1291 * api_msg.c: Flushing TCP output in do_close() (bug #15926).
1293 2006-06-27 Christiaan Simons
1294 * api_msg.c: Applied patch for cold case (bug #11135).
1295 In accept_function() ensure newconn->callback is always initialized.
1297 2006-06-15 Christiaan Simons
1298 * mem.h: added MEM_SIZE_F alias to fix an ancient cold case (bug #1748),
1299 facilitate printing of mem_size_t and u16_t statistics.
1301 2006-06-14 Christiaan Simons
1302 * api_msg.c: Applied patch #5146 to handle allocation failures
1303 in accept() by Kevin Lawson.
1305 2006-05-26 Christiaan Simons
1306 * api_lib.c: Removed conn->sem creation and destruction
1307 from netconn_write() and added sys_sem_new to netconn_new_*.
1311 2006-03-03 Christiaan Simons
1312 * ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap
1313 access and added pbuf_alloc() return value checks.
1315 2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net>
1316 * tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is
1317 now handled by the checksum routine properly.
1319 2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1320 * pbuf.c: Fix alignment; pbuf_init() would not work unless
1321 pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.)
1323 2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net>
1324 * tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch
1325 submitted by Mitrani Hiroshi.
1327 2005-12-15 Christiaan Simons
1328 * inet.c: Disabled the added summing routine to preserve code space.
1330 2005-12-14 Leon Woestenberg <leon.woestenberg@gmx.net>
1331 * tcp_in.c: Duplicate FIN ACK race condition fix by Kelvin Lawson.
1332 Added Curt McDowell's optimized checksumming routine for future
1333 inclusion. Need to create test case for unaliged, aligned, odd,
1334 even length combination of cases on various endianess machines.
1336 2005-12-09 Christiaan Simons
1337 * inet.c: Rewrote standard checksum routine in proper portable C.
1339 2005-11-25 Christiaan Simons
1340 * udp.c tcp.c: Removed SO_REUSE hack. Should reside in socket code only.
1341 * *.c: introduced cc.h LWIP_DEBUG formatters matching the u16_t, s16_t,
1342 u32_t, s32_t typedefs. This solves most debug word-length assumes.
1344 2005-07-17 Leon Woestenberg <leon.woestenberg@gmx.net>
1345 * inet.c: Fixed unaligned 16-bit access in the standard checksum
1346 routine by Peter Jolasson.
1347 * slipif.c: Fixed implementation assumption of single-pbuf datagrams.
1349 2005-02-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1350 * tcp_out.c: Fixed uninitialized 'queue' referenced in memerr branch.
1351 * tcp_{out|in}.c: Applied patch fixing unaligned access.
1353 2005-01-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1354 * pbuf.c: Fixed missing semicolon after LWIP_DEBUG statement.
1356 2005-01-03 Leon Woestenberg <leon.woestenberg@gmx.net>
1357 * udp.c: UDP pcb->recv() was called even when it was NULL.
1361 2004-12-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1362 * etharp.*: Disabled multiple packets on the ARP queue.
1363 This clashes with TCP queueing.
1365 2004-11-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1366 * etharp.*: Fixed race condition from ARP request to ARP timeout.
1367 Halved the ARP period, doubled the period counts.
1368 ETHARP_MAX_PENDING now should be at least 2. This prevents
1369 the counter from reaching 0 right away (which would allow
1370 too little time for ARP responses to be received).
1372 2004-11-25 Leon Woestenberg <leon.woestenberg@gmx.net>
1373 * dhcp.c: Decline messages were not multicast but unicast.
1374 * etharp.c: ETHARP_CREATE is renamed to ETHARP_TRY_HARD.
1375 Do not try hard to insert arbitrary packet's source address,
1376 etharp_ip_input() now calls etharp_update() without ETHARP_TRY_HARD.
1377 etharp_query() now always DOES call ETHARP_TRY_HARD so that users
1378 querying an address will see it appear in the cache (DHCP could
1379 suffer from this when a server invalidly gave an in-use address.)
1380 * ipv4/ip_addr.h: Renamed ip_addr_maskcmp() to _netcmp() as we are
1381 comparing network addresses (identifiers), not the network masks
1383 * ipv4/ip_addr.c: ip_addr_isbroadcast() now checks that the given
1384 IP address actually belongs to the network of the given interface.
1386 2004-11-24 Kieran Mansley <kjm25@cam.ac.uk>
1387 * tcp.c: Increment pcb->snd_buf when ACK is received in SYN_SENT state.
1391 2004-10-16 Kieran Mansley <kjm25@cam.ac.uk>
1392 * tcp.c: Add code to tcp_recved() to send an ACK (window update) immediately,
1393 even if one is already pending, if the rcv_wnd is above a threshold
1394 (currently TCP_WND/2). This avoids waiting for a timer to expire to send a
1395 delayed ACK in order to open the window if the stack is only receiving data.
1397 2004-09-12 Kieran Mansley <kjm25@cam.ac.uk>
1398 * tcp*.*: Retransmit time-out handling improvement by Sam Jansen.
1400 2004-08-20 Tony Mountifield <tony@softins.co.uk>
1401 * etharp.c: Make sure the first pbuf queued on an ARP entry
1402 is properly ref counted.
1404 2004-07-27 Tony Mountifield <tony@softins.co.uk>
1405 * debug.h: Added (int) cast in LWIP_DEBUGF() to avoid compiler
1406 warnings about comparison.
1407 * pbuf.c: Stopped compiler complaining of empty if statement
1408 when LWIP_DEBUGF() empty. Closed an unclosed comment.
1409 * tcp.c: Stopped compiler complaining of empty if statement
1410 when LWIP_DEBUGF() empty.
1411 * ip.h Corrected IPH_TOS() macro: returns a byte, so doesn't need htons().
1412 * inet.c: Added a couple of casts to quiet the compiler.
1413 No need to test isascii(c) before isdigit(c) or isxdigit(c).
1415 2004-07-22 Tony Mountifield <tony@softins.co.uk>
1416 * inet.c: Made data types consistent in inet_ntoa().
1417 Added casts for return values of checksum routines, to pacify compiler.
1418 * ip_frag.c, tcp_out.c, sockets.c, pbuf.c
1419 Small corrections to some debugging statements, to pacify compiler.
1421 2004-07-21 Tony Mountifield <tony@softins.co.uk>
1422 * etharp.c: Removed spurious semicolon and added missing end-of-comment.
1423 * ethernetif.c Updated low_level_output() to match prototype for
1424 netif->linkoutput and changed low_level_input() similarly for consistency.
1425 * api_msg.c: Changed recv_raw() from int to u8_t, to match prototype
1426 of raw_recv() in raw.h and so avoid compiler error.
1427 * sockets.c: Added trivial (int) cast to keep compiler happier.
1428 * ip.c, netif.c Changed debug statements to use the tidier ip4_addrN() macros.
1434 2004-07-05 Leon Woestenberg <leon.woestenberg@gmx.net>
1435 * sockets.*: Restructured LWIP_PRIVATE_TIMEVAL. Make sure
1436 your cc.h file defines this either 1 or 0. If non-defined,
1438 * .c: Added <string.h> and <errno.h> includes where used.
1439 * etharp.c: Made some array indices unsigned.
1441 2004-06-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1442 * netif.*: Added netif_set_up()/down().
1443 * dhcp.c: Changes to restart program flow.
1445 2004-05-07 Leon Woestenberg <leon.woestenberg@gmx.net>
1446 * etharp.c: In find_entry(), instead of a list traversal per candidate, do a
1447 single-pass lookup for different candidates. Should exploit locality.
1449 2004-04-29 Leon Woestenberg <leon.woestenberg@gmx.net>
1450 * tcp*.c: Cleaned up source comment documentation for Doxygen processing.
1451 * opt.h: ETHARP_ALWAYS_INSERT option removed to comply with ARP RFC.
1452 * etharp.c: update_arp_entry() only adds new ARP entries when adviced to by
1453 the caller. This deprecates the ETHARP_ALWAYS_INSERT overrule option.
1457 2004-04-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1458 * etharp.c: Applied patch of bug #8708 by Toni Mountifield with a solution
1459 suggested by Timmy Brolin. Fix for 32-bit processors that cannot access
1460 non-aligned 32-bit words, such as soms 32-bit TCP/IP header fields. Fix
1461 is to prefix the 14-bit Ethernet headers with two padding bytes.
1463 2004-04-23 Leon Woestenberg <leon.woestenberg@gmx.net>
1464 * ip_addr.c: Fix in the ip_addr_isbroadcast() check.
1465 * etharp.c: Fixed the case where the packet that initiates the ARP request
1466 is not queued, and gets lost. Fixed the case where the packets destination
1467 address is already known; we now always queue the packet and perform an ARP
1474 * Fixed TCP bug for SYN_SENT to ESTABLISHED state transition.
1475 * Fixed TCP bug in dequeueing of FIN from out of order segment queue.
1476 * Fixed two possible NULL references in rare cases.
1482 * Fixed DHCP which did not include the IP address in DECLINE messages.
1486 * etharp.c has been hauled over a bit.
1492 * Fixed TCP bug induced by bad window resizing with unidirectional TCP traffic.
1493 * Packets sent from ARP queue had invalid source hardware address.
1497 * Pass-by ARP requests do now update the cache.
1501 * No longer dependent on ctype.h.
1502 * New socket options.
1503 * Raw IP pcb support.
1509 * Some debug formatters and casts fixed.
1510 * Numereous fixes in PPP.
1514 * DEBUGF now is LWIP_DEBUGF
1515 * pbuf_dechain() has been re-enabled.
1516 * Mentioned the changed use of CVS branches in README.
1522 * Fixed pool pbuf memory leak in pbuf_alloc().
1523 Occured if not enough PBUF_POOL pbufs for a packet pbuf chain.
1524 Reported by Savin Zlobec.
1526 * PBUF_POOL chains had their tot_len field not set for non-first
1527 pbufs. Fixed in pbuf_alloc().
1531 * Added PPP stack contributed by Marc Boucher
1535 * Now drops short packets for ICMP/UDP/TCP protocols. More robust.
1537 * ARP queueuing now queues the latest packet instead of the first.
1538 This is the RFC recommended behaviour, but can be overridden in
1545 * TCP has been fixed to deal with the new use of the pbuf->ref
1548 * DHCP dhcp_inform() crash bug fixed.
1552 * Removed pbuf_pool_free_cache and pbuf_pool_alloc_cache. Also removed
1553 pbuf_refresh(). This has sped up pbuf pool operations considerably.
1554 Implemented by David Haas.
1560 * The packet buffer implementation has been enhanced to support
1561 zero-copy and copy-on-demand for packet buffers which have their
1562 payloads in application-managed memory.
1563 Implemented by David Haas.
1565 Use PBUF_REF to make a pbuf refer to RAM. lwIP will use zero-copy
1566 if an outgoing packet can be directly sent on the link, or perform
1567 a copy-on-demand when necessary.
1569 The application can safely assume the packet is sent, and the RAM
1570 is available to the application directly after calling udp_send()
1571 or similar function.
1575 * ARP_QUEUEING should now correctly work for all cases, including
1577 Implemented by Leon Woestenberg.
1581 * IP_ADDR_ANY is no longer a NULL pointer. Instead, it is a pointer
1582 to a '0.0.0.0' IP address.
1584 * The packet buffer implementation is changed. The pbuf->ref counter
1585 meaning has changed, and several pbuf functions have been
1586 adapted accordingly.
1588 * netif drivers have to be changed to set the hardware address length field
1589 that must be initialized correctly by the driver (hint: 6 for Ethernet MAC).
1590 See the contrib/ports/c16x cs8900 driver as a driver example.
1592 * netif's have a dhcp field that must be initialized to NULL by the driver.
1593 See the contrib/ports/c16x cs8900 driver as a driver example.
1595 (0.5.x) This file has been unmaintained up to 0.6.1. All changes are
1596 logged in CVS but have not been explained here.
1598 (0.5.3) Changes since version 0.5.2
1602 * memp_malloc(MEMP_API_MSG) could fail with multiple application
1603 threads because it wasn't protected by semaphores.
1607 * struct ip_addr now packed.
1609 * The name of the time variable in arp.c has been changed to ctime
1610 to avoid conflicts with the time() function.
1612 (0.5.2) Changes since version 0.5.1
1616 * A new TCP function, tcp_tmr(), now handles both TCP timers.
1620 * A bug in tcp_parseopt() could cause the stack to hang because of a
1621 malformed TCP option.
1623 * The address of new connections in the accept() function in the BSD
1624 socket library was not handled correctly.
1626 * pbuf_dechain() did not update the ->tot_len field of the tail.
1628 * Aborted TCP connections were not handled correctly in all
1633 * All protocol header structs are now packed.
1635 * The ->len field in the tcp_seg structure now counts the actual
1636 amount of data, and does not add one for SYN and FIN segments.
1638 (0.5.1) Changes since version 0.5.0
1642 * Possible to run as a user process under Linux.
1644 * Preliminary support for cross platform packed structs.
1646 * ARP timer now implemented.
1650 * TCP output queue length was badly initialized when opening
1653 * TCP delayed ACKs were not sent correctly.
1655 * Explicit initialization of BSS segment variables.
1657 * read() in BSD socket library could drop data.
1659 * Problems with memory alignment.
1661 * Situations when all TCP buffers were used could lead to
1664 * TCP MSS option wasn't parsed correctly.
1666 * Problems with UDP checksum calculation.
1668 * IP multicast address tests had endianess problems.
1670 * ARP requests had wrong destination hardware address.
1674 * struct eth_addr changed from u16_t[3] array to u8_t[6].
1676 * A ->linkoutput() member was added to struct netif.
1678 * TCP and UDP ->dest_* struct members where changed to ->remote_*.
1680 * ntoh* macros are now null definitions for big endian CPUs.
1682 (0.5.0) Changes since version 0.4.2
1686 * Redesigned operating system emulation layer to make porting easier.
1688 * Better control over TCP output buffers.
1690 * Documenation added.
1694 * Locking issues in buffer management.
1696 * Bugfixes in the sequential API.
1698 * IP forwarding could cause memory leakage. This has been fixed.
1702 * Directory structure somewhat changed; the core/ tree has been
1705 (0.4.2) Changes since version 0.4.1
1709 * Experimental ARP implementation added.
1711 * Skeleton Ethernet driver added.
1713 * Experimental BSD socket API library added.
1717 * In very intense situations, memory leakage could occur. This has
1722 * Variables named "data" and "code" have been renamed in order to
1723 avoid name conflicts in certain compilers.
1725 * Variable++ have in appliciable cases been translated to ++variable
1726 since some compilers generate better code in the latter case.
1728 (0.4.1) Changes since version 0.4
1732 * TCP: Connection attempts time out earlier than data
1733 transmissions. Nagle algorithm implemented. Push flag set on the
1734 last segment in a burst.
1736 * UDP: experimental support for UDP-Lite extensions.
1740 * TCP: out of order segments were in some cases handled incorrectly,
1741 and this has now been fixed. Delayed acknowledgements was broken
1742 in 0.4, has now been fixed. Binding to an address that is in use
1743 now results in an error. Reset connections sometimes hung an
1744 application; this has been fixed.
1746 * Checksum calculation sometimes failed for chained pbufs with odd
1747 lengths. This has been fixed.
1749 * API: a lot of bug fixes in the API. The UDP API has been improved
1750 and tested. Error reporting and handling has been
1751 improved. Logical flaws and race conditions for incoming TCP
1752 connections has been found and removed.
1754 * Memory manager: alignment issues. Reallocating memory sometimes
1755 failed, this has been fixed.
1757 * Generic library: bcopy was flawed and has been fixed.
1761 * API: all datatypes has been changed from generic ones such as
1762 ints, to specified ones such as u16_t. Functions that return
1763 errors now have the correct type (err_t).
1765 * General: A lot of code cleaned up and debugging code removed. Many
1766 portability issues have been fixed.
1768 * The license was changed; the advertising clause was removed.
1772 * Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri
1773 Kosunen, Mikael Caleres, and Frits Wilmink for reporting and
1776 (0.4) Changes since version 0.3.1
1778 * Memory management has been radically changed; instead of
1779 allocating memory from a shared heap, memory for objects that are
1780 rapidly allocated and deallocated is now kept in pools. Allocation
1781 and deallocation from those memory pools is very fast. The shared
1782 heap is still present but is used less frequently.
1784 * The memory, memory pool, and packet buffer subsystems now support
1785 4-, 2-, or 1-byte alignment.
1787 * "Out of memory" situations are handled in a more robust way.
1789 * Stack usage has been reduced.
1791 * Easier configuration of lwIP parameters such as memory usage,
1792 TTLs, statistics gathering, etc. All configuration parameters are
1793 now kept in a single header file "lwipopts.h".
1795 * The directory structure has been changed slightly so that all
1796 architecture specific files are kept under the src/arch
1799 * Error propagation has been improved, both in the protocol modules
1802 * The code for the RTXC architecture has been implemented, tested
1805 * Bugs have been found and corrected in the TCP, UDP, IP, API, and
1806 the Internet checksum modules.
1808 * Bugs related to porting between a 32-bit and a 16-bit architecture
1809 have been found and corrected.
1811 * The license has been changed slightly to conform more with the
1812 original BSD license, including the advertisement clause.
1814 (0.3.1) Changes since version 0.3
1816 * Fix of a fatal bug in the buffer management. Pbufs with allocated
1817 RAM never returned the RAM when the pbuf was deallocated.
1819 * TCP congestion control, window updates and retransmissions did not
1820 work correctly. This has now been fixed.
1822 * Bugfixes in the API.
1824 (0.3) Changes since version 0.2
1826 * New and improved directory structure. All include files are now
1827 kept in a dedicated include/ directory.
1829 * The API now has proper error handling. A new function,
1830 netconn_err(), now returns an error code for the connection in
1833 * Improvements in the memory management subsystem. The system now
1834 keeps a pointer to the lowest free memory block. A new function,
1835 mem_malloc2() tries to allocate memory once, and if it fails tries
1836 to free some memory and retry the allocation.
1838 * Much testing has been done with limited memory
1839 configurations. lwIP now does a better job when overloaded.
1841 * Some bugfixes and improvements to the buffer (pbuf) subsystem.
1843 * Many bugfixes in the TCP code:
1845 - Fixed a bug in tcp_close().
1847 - The TCP receive window was incorrectly closed when out of
1848 sequence segments was received. This has been fixed.
1850 - Connections are now timed-out of the FIN-WAIT-2 state.
1852 - The initial congestion window could in some cases be too
1853 large. This has been fixed.
1855 - The retransmission queue could in some cases be screwed up. This
1858 - TCP RST flag now handled correctly.
1860 - Out of sequence data was in some cases never delivered to the
1861 application. This has been fixed.
1863 - Retransmitted segments now contain the correct acknowledgment
1864 number and advertised window.
1866 - TCP retransmission timeout backoffs are not correctly computed
1867 (ala BSD). After a number of retransmissions, TCP now gives up
1870 * TCP connections now are kept on three lists, one for active
1871 connections, one for listening connections, and one for
1872 connections that are in TIME-WAIT. This greatly speeds up the fast
1873 timeout processing for sending delayed ACKs.
1875 * TCP now provides proper feedback to the application when a
1876 connection has been successfully set up.
1878 * More comments have been added to the code. The code has also been
1879 somewhat cleaned up.
1881 (0.2) Initial public release.