3 * TODO: The lwIP source code makes some invalid assumptions on processor
4 word-length, storage sizes and alignment. See the mailing lists for
5 problems with exoteric (/DSP) architectures showing these problems.
6 We still have to fix some of these issues neatly.
8 * TODO: the PPP code is broken in a few ways. There are namespace
9 collisions on BSD systems and many assumptions on word-length
10 (sizeof(int)). In ppp.c an assumption is made on the availability of
11 a thread subsystem. Either PPP needs to be moved to contrib/ports/???
12 or rearranged to be more generic.
18 * [Enter new changes just after this line - do not remove this line]
22 2008-01-14 Frédéric Bernon
23 * rawapi.txt, api_msg.c, tcp.c, tcp_in.c, tcp.h: changes for task #7675 "Enable
24 to refuse data on a TCP_EVENT_RECV call". Important, behavior changes for the
25 tcp_recv callback (see rawapi.txt).
27 2008-01-14 Frédéric Bernon, Marc Chaland
28 * ip.c: Integrate patch #6369" ip_input : checking before realloc".
30 2008-01-12 Frédéric Bernon
31 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
32 netconn::sem per netconn::op_completed like suggested for the task #7490
33 "Add return value to sys_mbox_post".
35 2008-01-12 Frédéric Bernon
36 * api_msg.c, opt.h: replace DEFAULT_RECVMBOX_SIZE per DEFAULT_TCP_RECVMBOX_SIZE,
37 DEFAULT_UDP_RECVMBOX_SIZE and DEFAULT_RAW_RECVMBOX_SIZE (to optimize queues
38 sizes), like suggested for the task #7490 "Add return value to sys_mbox_post".
40 2008-01-10 Frédéric Bernon
41 * tcpip.h, tcpip.c: add tcpip_callback_with_block function for the task #7490
42 "Add return value to sys_mbox_post". tcpip_callback is always defined as
43 "blocking" ("block" parameter = 1).
45 2008-01-10 Frédéric Bernon
46 * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field
47 netconn::mbox (sys_mbox_t) per netconn::sem (sys_sem_t) for the task #7490
48 "Add return value to sys_mbox_post".
50 2008-01-05 Frédéric Bernon
51 * sys_arch.txt, api.h, api_lib.c, api_msg.h, api_msg.c, tcpip.c, sys.h, opt.h:
52 Introduce changes for task #7490 "Add return value to sys_mbox_post" with some
53 modifications in the sys_mbox api: sys_mbox_new take a "size" parameters which
54 indicate the number of pointers query by the mailbox. There is three defines
55 in opt.h to indicate sizes for tcpip::mbox, netconn::recvmbox, and for the
56 netconn::acceptmbox. Port maintainers, you can decide to just add this new
57 parameter in your implementation, but to ignore it to keep the previous behavior.
58 The new sys_mbox_trypost function return a value to know if the mailbox is
59 full or if the message is posted. Take a look to sys_arch.txt for more details.
60 This new function is used in tcpip_input (so, can be called in an interrupt
61 context since the function is not blocking), and in recv_udp and recv_raw.
63 2008-01-04 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
64 * rawapi.txt, api.h, api_lib.c, api_msg.h, api_msg.c, sockets.c, tcp.h, tcp.c,
65 tcp_in.c, init.c, opt.h: rename backlog options with TCP_ prefix, limit the
66 "backlog" parameter in an u8_t, 0 is interpreted as "smallest queue", add
67 documentation in the rawapi.txt file.
69 2007-12-31 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
70 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Add TCP persist timer
72 2007-12-31 Frédéric Bernon, Luca Ceresoli
73 * autoip.c, etharp.c: ip_addr.h: Integrate patch #6348: "Broadcast ARP packets
74 in autoip". The change in etharp_raw could be removed, since all calls to
75 etharp_raw use ethbroadcast for the "ethdst_addr" parameter. But it could be
78 2007-12-30 Frédéric Bernon, Tom Evans
79 * ip.c: Fix bug #21846 "LwIP doesn't appear to perform any IP Source Address
80 Filtering" reported by Tom Evans.
82 2007-12-21 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour
83 * tcp.h, opt.h, api.h, api_msg.h, tcp.c, tcp_in.c, api_lib.c, api_msg.c,
84 sockets.c, init.c: task #7252: Implement TCP listen backlog: Warning: raw API
85 applications have to call 'tcp_accepted(pcb)' in their accept callback to
86 keep accepting new connections.
88 2007-12-13 Frédéric Bernon
89 * api_msg.c, err.h, err.c, sockets.c, dns.c, dns.h: replace "enum dns_result"
90 by err_t type. Add a new err_t code "ERR_INPROGRESS".
92 2007-12-12 Frédéric Bernon
93 * dns.h, dns.c, opt.h: move DNS options to the "right" place. Most visibles
94 are the one which have ram usage.
96 2007-12-05 Frédéric Bernon
97 * netdb.c: add a LWIP_DNS_API_HOSTENT_STORAGE option to decide to use a static
98 set of variables (=0) or a local one (=1). In this last case, your port should
99 provide a function "struct hostent* sys_thread_hostent( struct hostent* h)"
100 which have to do a copy of "h" and return a pointer ont the "per-thread" copy.
102 2007-12-03 Simon Goldschmidt
103 * ip.c: ip_input: check if a packet is for inp first before checking all other
104 netifs on netif_list (speeds up packet receiving in most cases)
106 2007-11-30 Simon Goldschmidt
107 * udp.c, raw.c: task #7497: Sort lists (pcb, netif, ...) for faster access
108 UDP: move a (connected) pcb selected for input to the front of the list of
109 pcbs so that it is found faster next time. Same for RAW pcbs that have eaten
112 2007-11-28 Simon Goldschmidt
113 * etharp.c, stats.c, stats.h, opt.h: Introduced ETHARP_STATS
115 2007-11-25 Simon Goldschmidt
116 * dhcp.c: dhcp_unfold_reply() uses pbuf_copy_partial instead of its own copy
119 2007-11-24 Simon Goldschmidt
120 * netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c
121 to the new file netdb.c; included lwip_getaddrinfo.
123 2007-11-21 Simon Goldschmidt
124 * tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss
125 based on the MTU of the netif used to send. Enabled by default. Disable by
126 setting LWIP_CALCULATE_EFF_SEND_MSS to 0. This fixes bug #21535.
128 2007-11-19 Frédéric Bernon
129 * api_msg.c, dns.h, dns.c: Implement DNS_DOES_NAME_CHECK option (check if name
130 received match the name query), implement DNS_USES_STATIC_BUF (the place where
131 copy dns payload to parse the response), return an error if there is no place
132 for a new query, and fix some minor problems.
134 2007-11-16 Simon Goldschmidt
135 * new files: ipv4/inet.c, ipv4/inet_chksum.c, ipv6/inet6.c
136 removed files: core/inet.c, core/inet6.c
137 Moved inet files into ipv4/ipv6 directory; splitted inet.c/inet.h into
138 inet and chksum part; changed includes in all lwIP files as appropriate
140 2007-11-16 Simon Goldschmidt
141 * api.h, api_msg.h, api_lib.c, api_msg.c, socket.h, socket.c: Added sequential
142 dns resolver function for netconn api (netconn_gethostbyname) and socket api
143 (gethostbyname/gethostbyname_r).
145 2007-11-15 Jim Pettinato, Frédéric Bernon
146 * opt.h, init.c, tcpip.c, dhcp.c, dns.h, dns.c: add DNS client for simple name
147 requests with RAW api interface. Initialization is done in lwip_init() with
148 build time options. DNS timer is added in tcpip_thread context. DHCP can set
149 DNS server ip addresses when options are received. You need to set LWIP_DNS=1
150 in your lwipopts.h file (LWIP_DNS=0 in opt.h). DNS_DEBUG can be set to get
151 some traces with LWIP_DEBUGF. Sanity check have been added. There is a "todo"
152 list with points to improve.
154 2007-11-06 Simon Goldschmidt
155 * opt.h, mib2.c: Patch #6215: added ifAdminStatus write support (if explicitly
156 enabled by defining SNMP_SAFE_REQUESTS to 0); added code to check link status
157 for ifOperStatus if LWIP_NETIF_LINK_CALLBACK is defined.
159 2007-11-06 Simon Goldschmidt
160 * api.h, api_msg.h and dependent files: Task #7410: Removed the need to include
161 core header files in api.h (ip/tcp/udp/raw.h) to hide the internal
162 implementation from netconn api applications.
164 2007-11-03 Frédéric Bernon
165 * api.h, api_lib.c, api_msg.c, sockets.c, opt.h: add SO_RCVBUF option for UDP &
166 RAW netconn. You need to set LWIP_SO_RCVBUF=1 in your lwipopts.h (it's disabled
167 by default). Netconn API users can use the netconn_recv_bufsize macro to access
168 it. This is a first release which have to be improve for TCP. Note it used the
169 netconn::recv_avail which need to be more "thread-safe" (note there is already
170 the problem for FIONREAD with lwip_ioctl/ioctlsocket).
172 2007-11-01 Frédéric Bernon, Marc Chaland
173 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, tcp.h, tcp_out.c:
174 Integrate "patch #6250 : MSG_MORE flag for send". MSG_MORE is used at socket api
175 layer, NETCONN_MORE at netconn api layer, and TCP_WRITE_FLAG_MORE at raw api
176 layer. This option enable to delayed TCP PUSH flag on multiple "write" calls.
177 Note that previous "copy" parameter for "write" APIs is now called "apiflags".
179 2007-10-24 Frédéric Bernon
180 * api.h, api_lib.c, api_msg.c: Add macro API_EVENT in the same spirit than
181 TCP_EVENT_xxx macros to get a code more readable. It could also help to remove
182 some code (like we have talk in "patch #5919 : Create compile switch to remove
183 select code"), but it could be done later.
185 2007-10-08 Simon Goldschmidt
186 * many files: Changed initialization: many init functions are not needed any
187 more since we now rely on the compiler initializing global and static
190 2007-10-06 Simon Goldschmidt
191 * ip_frag.c, memp.c, mib2.c, ip_frag.h, memp_std.h, opt.h: Changed IP_REASSEMBLY
192 to enqueue the received pbufs so that multiple packets can be reassembled
193 simultaneously and no static reassembly buffer is needed.
195 2007-10-05 Simon Goldschmidt
196 * tcpip.c, etharp.h, etharp.c: moved ethernet_input from tcpip.c to etharp.c so
197 all netifs (or ports) can use it.
199 2007-10-05 Frédéric Bernon
200 * netifapi.h, netifapi.c: add function netifapi_netif_set_default. Change the
201 common function to reduce a little bit the footprint (for all functions using
202 only the "netif" parameter).
204 2007-10-03 Frédéric Bernon
205 * netifapi.h, netifapi.c: add functions netifapi_netif_set_up, netifapi_netif_set_down,
206 netifapi_autoip_start and netifapi_autoip_stop. Use a common function to reduce
207 a little bit the footprint (for all functions using only the "netif" parameter).
209 2007-09-15 Frédéric Bernon
210 * udp.h, udp.c, sockets.c: Changes for "#20503 IGMP Improvement". Add IP_MULTICAST_IF
211 option in socket API, and a new field "multicast_ip" in "struct udp_pcb" (for
212 netconn and raw API users), only if LWIP_IGMP=1. Add getsockopt processing for
213 IP_MULTICAST_TTL and IP_MULTICAST_IF.
215 2007-09-10 Frédéric Bernon
216 * snmp.h, mib2.c: enable to remove SNMP timer (which consumne several cycles
217 even when it's not necessary). snmp_agent.txt tell to call snmp_inc_sysuptime()
218 each 10ms (but, it's intrusive if you use sys_timeout feature). Now, you can
219 decide to call snmp_add_sysuptime(100) each 1000ms (which is bigger "step", but
220 call to a lower frequency). Or, you can decide to not call snmp_inc_sysuptime()
221 or snmp_add_sysuptime(), and to define the SNMP_GET_SYSUPTIME(sysuptime) macro.
222 This one is undefined by default in mib2.c. SNMP_GET_SYSUPTIME is called inside
223 snmp_get_sysuptime(u32_t *value), and enable to change "sysuptime" value only
224 when it's queried (any direct call to "sysuptime" is changed by a call to
227 2007-09-09 Frédéric Bernon, Bill Florac
228 * igmp.h, igmp.c, netif.h, netif.c, ip.c: To enable to have interfaces with IGMP,
229 and others without it, there is a new NETIF_FLAG_IGMP flag to set in netif->flags
230 if you want IGMP on an interface. igmp_stop() is now called inside netif_remove().
231 igmp_report_groups() is now called inside netif_set_link_up() (need to have
232 LWIP_NETIF_LINK_CALLBACK=1) to resend reports once the link is up (avoid to wait
233 the next query message to receive the matching multicast streams).
235 2007-09-08 Frédéric Bernon
236 * sockets.c, ip.h, api.h, tcp.h: declare a "struct ip_pcb" which only contains
237 IP_PCB. Add in the netconn's "pcb" union a "struct ip_pcb *ip;" (no size change).
238 Use this new field to access to common pcb fields (ttl, tos, so_options, etc...).
239 Enable to access to these fields with LWIP_TCP=0.
241 2007-09-05 Frédéric Bernon
242 * udp.c, ipv4/icmp.c, ipv4/ip.c, ipv6/icmp.c, ipv6/ip6.c, ipv4/icmp.h,
243 ipv6/icmp.h, opt.h: Integrate "task #7272 : LWIP_ICMP option". The new option
244 LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default).
245 Be careful, disabling ICMP make your product non-compliant to RFC1122, but
246 help to reduce footprint, and to reduce "visibility" on the Internet.
248 2007-09-05 Frédéric Bernon, Bill Florac
249 * opt.h, sys.h, tcpip.c, slipif.c, ppp.c, sys_arch.txt: Change parameters list
250 for sys_thread_new (see "task #7252 : Create sys_thread_new_ex()"). Two new
251 parameters have to be provided: a task name, and a task stack size. For this
252 one, since it's platform dependant, you could define the best one for you in
253 your lwipopts.h. For port maintainers, you can just add these new parameters
254 in your sys_arch.c file, and but it's not mandatory, use them in your OS
257 2007-09-05 Frédéric Bernon
258 * inet.c, autoip.c, msg_in.c, msg_out.c, init.c: Move some build time checkings
259 inside init.c for task #7142 "Sanity check user-configurable values".
261 2007-09-04 Frédéric Bernon, Bill Florac
262 * igmp.h, igmp.c, memp_std.h, memp.c, init.c, opt.h: Replace mem_malloc call by
263 memp_malloc, and use a new MEMP_NUM_IGMP_GROUP option (see opt.h to define the
264 value). It will avoid potential fragmentation problems, use a counter to know
265 how many times a group is used on an netif, and free it when all applications
266 leave it. MEMP_NUM_IGMP_GROUP got 8 as default value (and init.c got a sanity
267 check if LWIP_IGMP!=0).
269 2007-09-03 Frédéric Bernon
270 * igmp.h, igmp.c, sockets.c, api_msg.c: Changes for "#20503 IGMP Improvement".
271 Initialize igmp_mac_filter to NULL in netif_add (this field should be set in
272 the netif's "init" function). Use the "imr_interface" field (for socket layer)
273 and/or the "interface" field (for netconn layer), for join/leave operations.
274 The igmp_join/leavegroup first parameter change from a netif to an ipaddr.
275 This field could be a netif's ipaddr, or "any" (same meaning than ip_addr_isany).
277 2007-08-30 Frédéric Bernon
278 * Add netbuf.h, netbuf.c, Change api.h, api_lib.c: #7249 "Split netbuf functions
279 from api/api_lib". Now netbuf API is independant of netconn, and can be used
280 with other API (application based on raw API, or future "socket2" API). Ports
281 maintainers just have to add src/api/netbuf.c in their makefile/projects.
283 2007-08-30 Frédéric Bernon, Jonathan Larmour
284 * init.c: Add first version of lwip_sanity_check for task #7142 "Sanity check
285 user-configurable values".
287 2007-08-29 Frédéric Bernon
288 * igmp.h, igmp.c, tcpip.c, init.c, netif.c: change igmp_init and add igmp_start.
289 igmp_start is call inside netif_add. Now, igmp initialization is in the same
290 spirit than the others modules. Modify some IGMP debug traces.
292 2007-08-29 Frédéric Bernon
293 * Add init.h, init.c, Change opt.h, tcpip.c: Task #7213 "Add a lwip_init function"
294 Add lwip_init function to regroup all modules initializations, and to provide
295 a place to add code for task #7142 "Sanity check user-configurable values".
296 Ports maintainers should remove direct initializations calls from their code,
297 and add init.c in their makefiles. Note that lwip_init() function is called
298 inside tcpip_init, but can also be used by raw api users since all calls are
299 disabled when matching options are disabled. Also note that their is new options
300 in opt.h, you should configure in your lwipopts.h (they are enabled per default).
302 2007-08-26 Marc Boucher
303 * api_msg.c: do_close_internal(): Reset the callbacks and arg (conn) to NULL
304 since they can under certain circumstances be called with an invalid conn
305 pointer after the connection has been closed (and conn has been freed).
307 2007-08-25 Frédéric Bernon (Artem Migaev's Patch)
308 * netif.h, netif.c: Integrate "patch #6163 : Function to check if link layer is up".
309 Add a netif_is_link_up() function if LWIP_NETIF_LINK_CALLBACK option is set.
311 2007-08-22 Frédéric Bernon
312 * netif.h, netif.c, opt.h: Rename LWIP_NETIF_CALLBACK in LWIP_NETIF_STATUS_CALLBACK
313 to be coherent with new LWIP_NETIF_LINK_CALLBACK option before next release.
315 2007-08-22 Frédéric Bernon
316 * tcpip.h, tcpip.c, ethernetif.c, opt.h: remove options ETHARP_TCPIP_INPUT &
317 ETHARP_TCPIP_ETHINPUT, now, only "ethinput" code is supported, even if the
318 name is tcpip_input (we keep the name of 1.2.0 function).
320 2007-08-17 Jared Grubb
321 * memp_std.h, memp.h, memp.c, mem.c, stats.c: (Task #7136) Centralize mempool
322 settings into new memp_std.h and optional user file lwippools.h. This adds
323 more dynamic mempools, and allows the user to create an arbitrary number of
324 mempools for mem_malloc.
326 2007-08-16 Marc Boucher
327 * api_msg.c: Initialize newconn->state to NETCONN_NONE in accept_function;
328 otherwise it was left to NETCONN_CLOSE and sent_tcp() could prematurely
329 close the connection.
331 2007-08-16 Marc Boucher
332 * sockets.c: lwip_accept(): check netconn_peer() error return.
334 2007-08-16 Marc Boucher
335 * mem.c, mem.h: Added mem_calloc().
337 2007-08-16 Marc Boucher
338 * tcpip.c, tcpip.h memp.c, memp.h: Added distinct memp (MEMP_TCPIP_MSG_INPKT)
339 for input packets to prevent floods from consuming all of MEMP_TCPIP_MSG
340 and starving other message types.
341 Renamed MEMP_TCPIP_MSG to MEMP_TCPIP_MSG_API
343 2007-08-16 Marc Boucher
344 * pbuf.c, pbuf.h, etharp.c, tcp_in.c, sockets.c: Split pbuf flags in pbuf
345 type and flgs (later renamed to flags).
346 Use enum pbuf_flag as pbuf_type. Renumber PBUF_FLAG_*.
347 Improved lwip_recvfrom(). TCP push now propagated.
349 2007-08-16 Marc Boucher
350 * ethernetif.c, contrib/ports/various: ethbroadcast now a shared global
353 2007-08-16 Marc Boucher
354 * ppp_oe.c ppp_oe.h, auth.c chap.c fsm.c lcp.c ppp.c ppp.h,
355 etharp.c ethernetif.c, etharp.h, opt.h tcpip.h, tcpip.c:
356 Added PPPoE support and various PPP improvements.
358 2007-07-25 Simon Goldschmidt
359 * api_lib.c, ip_frag.c, pbuf.c, api.h, pbuf.h: Introduced pbuf_copy_partial,
360 making netbuf_copy_partial use this function.
362 2007-07-25 Simon Goldschmidt
363 * tcp_in.c: Fix bug #20506: Slow start / initial congestion window starts with
364 2 * mss (instead of 1 * mss previously) to comply with some newer RFCs and
367 2007-07-13 Jared Grubb (integrated by Frédéric Bernon)
368 * opt.h, netif.h, netif.c, ethernetif.c: Add new configuration option to add
369 a link callback in the netif struct, and functions to handle it. Be carefull
370 for port maintainers to add the NETIF_FLAG_LINK_UP flag (like in ethernetif.c)
371 if you want to be sure to be compatible with future changes...
373 2007-06-30 Frédéric Bernon
374 * sockets.h, sockets.c: Implement MSG_PEEK flag for recv/recvfrom functions.
376 2007-06-21 Simon Goldschmidt
377 * etharp.h, etharp.c: Combined etharp_request with etharp_raw for both
378 LWIP_AUTOIP =0 and =1 to remove redundant code.
380 2007-06-21 Simon Goldschmidt
381 * mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option
382 MEM_USE_POOLS to use 4 pools with different sized elements instead of a
383 heap. This both prevents memory fragmentation and gives a higher speed
384 at the cost of more memory consumption. Turned off by default.
386 2007-06-21 Simon Goldschmidt
387 * api_lib.c, api_msg.c, api.h, api_msg.h: Converted the length argument of
388 netconn_write (and therefore also api_msg_msg.msg.w.len) from u16_t into
389 int to be able to send a bigger buffer than 64K with one time (mainly
390 used from lwip_send).
392 2007-06-21 Simon Goldschmidt
393 * tcp.h, api_msg.c: Moved the nagle algorithm from netconn_write/do_write
394 into a define (tcp_output_nagle) in tcp.h to provide it to raw api users, too.
396 2007-06-21 Simon Goldschmidt
397 * api.h, api_lib.c, api_msg.c: Fixed bug #20021: Moved sendbuf-processing in
398 netconn_write from api_lib.c to api_msg.c to also prevent multiple context-
399 changes on low memory or empty send-buffer.
401 2007-06-18 Simon Goldschmidt
402 * etharp.c, etharp.h: Changed etharp to use a defined hardware address length
403 of 6 to avoid loading netif->hwaddr_len every time (since this file is only
404 used for ethernet and struct eth_addr already had a defined length of 6).
406 2007-06-17 Simon Goldschmidt
407 * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets
408 to disable UDP checksum generation on transmit.
410 2007-06-13 Frédéric Bernon, Simon Goldschmidt
411 * debug.h, api_msg.c: change LWIP_ERROR to use it to check errors like invalid
412 pointers or parameters, and let the possibility to redefined it in cc.h. Use
413 this macro to check "conn" parameter in api_msg.c functions.
415 2007-06-11 Simon Goldschmidt
416 * sockets.c, sockets.h: Added UDP lite support for sockets
418 2007-06-10 Simon Goldschmidt
419 * udp.h, opt.h, api_msg.c, ip.c, udp.c: Included switch LWIP_UDPLITE (enabled
420 by default) to switch off UDP-Lite support if not needed (reduces udp.c code
423 2007-06-09 Dominik Spies (integrated by Frédéric Bernon)
424 * autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h:
425 AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and
426 LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt
427 (see TODO mark in the source code).
429 2007-06-09 Simon Goldschmidt
430 * etharp.h, etharp.c, ethernetif.c: Modified order of parameters for
431 etharp_output() to match netif->output so etharp_output() can be used
432 directly as netif->output to save one function call.
434 2007-06-08 Simon Goldschmidt
435 * netif.h, ethernetif.c, slipif.c, loopif.c: Added define
436 NETIF_INIT_SNMP(netif, type, speed) to initialize per-netif snmp variables,
437 added initialization of those to ethernetif, slipif and loopif.
439 2007-05-18 Simon Goldschmidt
440 * opt.h, ip_frag.c, ip_frag.h, ip.c: Added option IP_FRAG_USES_STATIC_BUF
441 (defaulting to off for now) that can be set to 0 to send fragmented
442 packets by passing PBUF_REFs down the stack.
444 2007-05-23 Frédéric Bernon
445 * api_lib.c: Implement SO_RCVTIMEO for accept and recv on TCP
446 connections, such present in patch #5959.
448 2007-05-23 Frédéric Bernon
449 * api.h, api_lib.c, api_msg.c, sockets.c: group the different NETCONN_UDPxxx
450 code in only one part...
452 2007-05-18 Simon Goldschmidt
453 * opt.h, memp.h, memp.c: Added option MEMP_OVERFLOW_CHECK to check for memp
454 elements to overflow. This is achieved by adding some bytes before and after
455 each pool element (increasing their size, of course), filling them with a
456 prominent value and checking them on freeing the element.
457 Set it to 2 to also check every element in every pool each time memp_malloc()
458 or memp_free() is called (slower but more helpful).
460 2007-05-10 Simon Goldschmidt
461 * opt.h, memp.h, memp.c, pbuf.c (see task #6831): use a new memp pool for
462 PBUF_POOL pbufs instead of the old pool implementation in pbuf.c to reduce
465 2007-05-11 Frédéric Bernon
466 * sockets.c, api_lib.c, api_msg.h, api_msg.c, netifapi.h, netifapi.c, tcpip.c:
467 Include a function pointer instead of a table index in the message to reduce
468 footprint. Disable some part of lwip_send and lwip_sendto if some options are
469 not set (LWIP_TCP, LWIP_UDP, LWIP_RAW).
471 2007-05-10 Simon Goldschmidt
472 * *.h (except netif/ppp/*.h): Included patch #5448: include '#ifdef __cplusplus
473 \ extern "C" {' in all header files. Now you can write your application using
474 the lwIP stack in C++ and simply #include the core files. Note I have left
475 out the netif/ppp/*h header files for now, since I don't know which files are
476 included by applications and which are for internal use only.
478 2007-05-09 Simon Goldschmidt
479 * opt.h, *.c/*.h: Included patch #5920: Create define to override C-library
480 memcpy. 2 Defines are created: MEMCPY() for normal memcpy, SMEMCPY() for
481 situations where some compilers might inline the copy and save a function
482 call. Also replaced all calls to memcpy() with calls to (S)MEMCPY().
484 2007-05-08 Simon Goldschmidt
485 * mem.h: If MEM_LIBC_MALLOC==1, allow the defines (e.g. mem_malloc() -> malloc())
486 to be overriden in case the C-library malloc implementation is not protected
487 against concurrent access.
489 2007-05-04 Simon Goldschmidt (Atte Kojo)
490 * etharp.c: Introduced fast one-entry-cache to speed up ARP lookup when sending
491 multiple packets to the same host.
493 2007-05-04 Frédéric Bernon, Jonathan Larmour
494 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fix bug #19162 "lwip_sento: a possible
495 to corrupt remote addr/port connection state". Reduce problems "not enought memory" with
496 netbuf (if we receive lot of datagrams). Improve lwip_sendto (only one exchange between
497 sockets api and api_msg which run in tcpip_thread context). Add netconn_sento function.
498 Warning, if you directly access to "fromaddr" & "fromport" field from netbuf struct,
499 these fields are now renamed "addr" & "port".
501 2007-04-11 Jonathan Larmour
502 * sys.h, api_lib.c: Provide new sys_mbox_tryfetch function. Require ports to provide new
503 sys_arch_mbox_tryfetch function to get a message if one is there, otherwise return
504 with SYS_MBOX_EMPTY. sys_arch_mbox_tryfetch can be implemented as a function-like macro
505 by the port in sys_arch.h if desired.
507 2007-04-06 Frédéric Bernon, Simon Goldschmidt
508 * opt.h, tcpip.h, tcpip.c, netifapi.h, netifapi.c: New configuration option LWIP_NETIF_API
509 allow to use thread-safe functions to add/remove netif in list, and to start/stop dhcp
510 clients, using new functions from netifapi.h. Disable as default (no port change to do).
512 2007-04-05 Frédéric Bernon
513 * sockets.c: remplace ENOBUFS errors on alloc_socket by ENFILE to be more BSD compliant.
515 2007-04-04 Simon Goldschmidt
516 * arch.h, api_msg.c, dhcp.c, msg_in.c, sockets.c: Introduced #define LWIP_UNUSED_ARG(x)
517 use this for and architecture-independent form to tell the compiler you intentionally
518 are not using this variable. Can be overriden in cc.h.
520 2007-03-28 Frédéric Bernon
521 * opt.h, netif.h, dhcp.h, dhcp.c: New configuration option LWIP_NETIF_HOSTNAME allow to
522 define a hostname in netif struct (this is just a pointer, so, you can use a hardcoded
523 string, point on one of your's ethernetif field, or alloc a string you will free yourself).
524 It will be used by DHCP to register a client hostname, but can also be use when you call
527 2007-03-28 Frédéric Bernon
528 * netif.h, netif.c: A new NETIF_FLAG_ETHARP flag is defined in netif.h, to allow to
529 initialize a network interface's flag with. It tell this interface is an ethernet
530 device, and we can use ARP with it to do a "gratuitous ARP" (RFC 3220 "IP Mobility
531 Support for IPv4" section 4.6) when interface is "up" with netif_set_up().
533 2007-03-26 Frédéric Bernon, Jonathan Larmour
534 * opt.h, tcpip.c: New configuration option LWIP_ARP allow to disable ARP init at build
535 time if you only use PPP or SLIP. The default is enable. Note we don't have to call
536 etharp_init in your port's initilization sequence if you use tcpip.c, because this call
537 is done in tcpip_init function.
539 2007-03-22 Frédéric Bernon
540 * stats.h, stats.c, msg_in.c: Stats counters can be change to u32_t if necessary with the
541 new option LWIP_STATS_LARGE. If you need this option, define LWIP_STATS_LARGE to 1 in
542 your lwipopts.h. More, unused counters are not defined in the stats structs, and not
543 display by stats_display(). Note that some options (SYS_STATS and RAW_STATS) are defined
544 but never used. Fix msg_in.c with the correct #if test for a stat display.
546 2007-03-21 Kieran Mansley
547 * netif.c, netif.h: Apply patch#4197 with some changes (originator: rireland@hmgsl.com).
548 Provides callback on netif up/down state change.
550 2007-03-11 Frédéric Bernon, Mace Gael, Steve Reynolds
551 * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, igmp.h, igmp.c,
552 ip.c, netif.h, tcpip.c, opt.h:
553 New configuration option LWIP_IGMP to enable IGMP processing. Based on only one
554 filter per all network interfaces. Declare a new function in netif to enable to
555 control the MAC filter (to reduce lwIP traffic processing).
557 2007-03-11 Frédéric Bernon
558 * tcp.h, tcp.c, sockets.c, tcp_out.c, tcp_in.c, opt.h: Keepalive values can
559 be configured at run time with LWIP_TCP_KEEPALIVE, but don't change this
560 unless you know what you're doing (default are RFC1122 compliant). Note
561 that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set in seconds.
563 2007-03-08 Frédéric Bernon
564 * tcp.h: Keepalive values can be configured at compile time, but don't change
565 this unless you know what you're doing (default are RFC1122 compliant).
567 2007-03-08 Frédéric Bernon
568 * sockets.c, api.h, api_lib.c, tcpip.c, sys.h, sys.c, err.c, opt.h:
569 Implement LWIP_SO_RCVTIMEO configuration option to enable/disable SO_RCVTIMEO
570 on UDP sockets/netconn.
572 2007-03-08 Simon Goldschmidt
573 * snmp_msg.h, msg_in.c: SNMP UDP ports can be configured at compile time.
575 2007-03-06 Frédéric Bernon
576 * api.h, api_lib.c, sockets.h, sockets.c, tcpip.c, sys.h, sys.c, err.h:
577 Implement SO_RCVTIMEO on UDP sockets/netconn.
579 2007-02-28 Kieran Mansley (based on patch from Simon Goldschmidt)
580 * api_lib.c, tcpip.c, memp.c, memp.h: make API msg structs allocated
581 on the stack and remove the API msg type from memp
583 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
584 * sockets.h, sockets.c: Move socket initialization to new
585 lwip_socket_init() function.
586 NOTE: this changes the API with ports. Ports will have to be
587 updated to call lwip_socket_init() now.
589 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt)
590 * api_lib.c: Use memcpy in netbuf_copy_partial.
595 2008-01-09 Jonathan Larmour
596 * opt.h, ip.c: Rename IP_OPTIONS define to IP_OPTIONS_ALLOWED to avoid
597 conflict with Linux system headers.
599 2008-01-06 Jonathan Larmour
600 * dhcp.c: fix bug #19927: "DHCP NACK problem" by clearing any existing set IP
601 address entirely on receiving a DHCPNAK, and restarting discovery.
603 2007-12-21 Simon Goldschmidt
604 * sys.h, api_lib.c, api_msg.c, sockets.c: fix bug #21698: "netconn->recv_avail
605 is not protected" by using new macros for interlocked access to modify/test
608 2007-12-20 Kieran Mansley (based on patch from Oleg Tyshev)
609 * tcp_in.c: fix bug# 21535 (nrtx not reset correctly in SYN_SENT state)
611 2007-12-20 Kieran Mansley (based on patch from Per-Henrik Lundbolm)
612 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: fix bug #20199 (better handling
613 of silly window avoidance and prevent lwIP from shrinking the window)
615 2007-12-04 Simon Goldschmidt
616 * tcp.c, tcp_in.c: fix bug #21699 (segment leak in ooseq processing when last
617 data packet was lost): add assert that all segment lists are empty in
618 tcp_pcb_remove before setting pcb to CLOSED state; don't directly set CLOSED
619 state from LAST_ACK in tcp_process
621 2007-12-02 Simon Goldschmidt
622 * sockets.h: fix bug #21654: exclude definition of struct timeval from #ifndef FD_SET
623 If including <sys/time.h> for system-struct timeval, LWIP_TIMEVAL_PRIVATE now
624 has to be set to 0 in lwipopts.h
626 2007-12-02 Simon Goldschmidt
627 * api_msg.c, api_lib.c: fix bug #21656 (recvmbox problem in netconn API): always
628 allocate a recvmbox in netconn_new_with_proto_and_callback. For a tcp-listen
629 netconn, this recvmbox is later freed and a new mbox is allocated for acceptmbox.
630 This is a fix for thread-safety and allocates all items needed for a netconn
631 when the netconn is created.
633 2007-11-30 Simon Goldschmidt
634 * udp.c: first attempt to fix bug #21655 (DHCP doesn't work reliably with multiple
635 netifs): if LWIP_DHCP is enabled, UDP packets to DHCP_CLIENT_PORT are passed
636 to netif->dhcp->pcb only (if that exists) and not to any other pcb for the same
637 port (only solution to let UDP pcbs 'bind' to a netif instead of an IP address)
639 2007-11-27 Simon Goldschmidt
640 * ip.c: fixed bug #21643 (udp_send/raw_send don't fail if netif is down) by
641 letting ip_route only use netifs that are up.
643 2007-11-27 Simon Goldschmidt
644 * err.h, api_lib.c, api_msg.c, sockets.c: Changed error handling: ERR_MEM, ERR_BUF
645 and ERR_RTE are seen as non-fatal, all other errors are fatal. netconns and
646 sockets block most operations once they have seen a fatal error.
648 2007-11-27 Simon Goldschmidt
649 * udp.h, udp.c, dhcp.c: Implemented new function udp_sendto_if which takes the
650 netif to send as an argument (to be able to send on netifs that are down).
652 2007-11-26 Simon Goldschmidt
653 * tcp_in.c: Fixed bug #21582: pcb->acked accounting can be wrong when ACKs
656 2007-11-21 Simon Goldschmidt
657 * tcp.h, tcp_out.c, api_msg.c: Fixed bug #20287: tcp_output_nagle sends too early
658 Fixed the nagle algorithm; nagle now also works for all raw API applications
659 and has to be explicitly disabled with 'tcp_pcb->flags |= TF_NODELAY'
661 2007-11-12 Frédéric Bernon
662 * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fixed bug #20900. Now, most
663 of the netconn_peer and netconn_addr processing is done inside tcpip_thread
664 context in do_getaddr.
666 2007-11-10 Simon Goldschmidt
667 * etharp.c: Fixed bug: assert fired when MEMP_ARP_QUEUE was empty (which can
668 happen any time). Now the packet simply isn't enqueued when out of memory.
670 2007-11-01 Simon Goldschmidt
671 * tcp.c, tcp_in.c: Fixed bug #21494: The send mss (pcb->mss) is set to 536 (or
672 TCP_MSS if that is smaller) as long as no MSS option is received from the
675 2007-11-01 Simon Goldschmidt
676 * tcp.h, tcp.c, tcp_in.c: Fixed bug #21491: The MSS option sent (with SYN)
677 is now based on TCP_MSS instead of pcb->mss (on passive open now effectively
678 sending our configured TCP_MSS instead of the one received).
680 2007-11-01 Simon Goldschmidt
681 * tcp_in.c: Fixed bug #21181: On active open, the initial congestion window was
682 calculated based on the configured TCP_MSS, not on the MSS option received
685 2007-10-09 Simon Goldschmidt
686 * udp.c, inet.c, inet.h: Fixed UDPLite: send: Checksum was always generated too
687 short and also was generated wrong if checksum coverage != tot_len;
688 receive: checksum was calculated wrong if checksum coverage != tot_len
690 2007-10-08 Simon Goldschmidt
691 * mem.c: lfree was not updated in mem_realloc!
693 2007-10-07 Frédéric Bernon
694 * sockets.c, api.h, api_lib.c: First step to fix "bug #20900 : Potential
695 crash error problem with netconn_peer & netconn_addr". VERY IMPORTANT:
696 this change cause an API breakage for netconn_addr, since a parameter
697 type change. Any compiler should cause an error without any changes in
698 yours netconn_peer calls (so, it can't be a "silent change"). It also
699 reduce a little bit the footprint for socket layer (lwip_getpeername &
700 lwip_getsockname use now a common lwip_getaddrname function since
701 netconn_peer & netconn_addr have the same parameters).
703 2007-09-20 Simon Goldschmidt
704 * tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state)
705 by checking tcp_tw_pcbs also
707 2007-09-19 Simon Goldschmidt
708 * icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
710 2007-09-15 Mike Kleshov
711 * mem.c: Fixed bug #21077 (inaccuracy in calculation of lwip_stat.mem.used)
713 2007-09-06 Frédéric Bernon
714 * several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
715 it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
716 already include "lwip/arch.h"). Like that, default defines are provided by "lwip/arch.h"
717 if they are not defined in cc.h, in the same spirit than "lwip/opt.h" for lwipopts.h.
719 2007-08-30 Frédéric Bernon
720 * igmp.h, igmp.c: Some changes to remove some redundant code, add some traces,
721 and fix some coding style.
723 2007-08-28 Frédéric Bernon
724 * tcpip.c: Fix TCPIP_MSG_INPKT processing: now, tcpip_input can be used for any
725 kind of packets. These packets are considered like Ethernet packets (payload
726 pointing to ethhdr) if the netif got the NETIF_FLAG_ETHARP flag. Else, packets
727 are considered like IP packets (payload pointing to iphdr).
729 2007-08-27 Frédéric Bernon
730 * api.h, api_lib.c, api_msg.c: First fix for "bug #20900 : Potential crash error
731 problem with netconn_peer & netconn_addr". Introduce NETCONN_LISTEN netconn_state
732 and remove obsolete ones (NETCONN_RECV & NETCONN_ACCEPT).
734 2007-08-24 Kieran Mansley
735 * inet.c Modify (acc >> 16) test to ((acc >> 16) != 0) to help buggy
736 compiler (Paradigm C++)
738 2007-08-09 Frédéric Bernon, Bill Florac
739 * stats.h, stats.c, igmp.h, igmp.c, opt.h: Fix for bug #20503 : IGMP Improvement.
740 Introduce IGMP_STATS to centralize statistics management.
742 2007-08-09 Frédéric Bernon, Bill Florac
743 * udp.c: Fix for bug #20503 : IGMP Improvement. Enable to receive a multicast
744 packet on a udp pcb binded on an netif's IP address, and not on "any".
746 2007-08-09 Frédéric Bernon, Bill Florac
747 * igmp.h, igmp.c, ip.c: Fix minor changes from bug #20503 : IGMP Improvement.
748 This is mainly on using lookup/lookfor, and some coding styles...
750 2007-07-26 Frédéric Bernon (and "thedoctor")
751 * igmp.c: Fix bug #20595 to accept IGMPv3 "Query" messages.
753 2007-07-25 Simon Goldschmidt
754 * api_msg.c, tcp.c: Another fix for bug #20021: by not returning an error if
755 tcp_output fails in tcp_close, the code in do_close_internal gets simpler
756 (tcp_output is called again later from tcp timers).
758 2007-07-25 Simon Goldschmidt
759 * ip_frag.c: Fixed bug #20429: use the new pbuf_copy_partial instead of the old
760 copy_from_pbuf, which illegally modified the given pbuf.
762 2007-07-25 Simon Goldschmidt
763 * tcp_out.c: tcp_enqueue: pcb->snd_queuelen didn't work for chaine PBUF_RAMs:
764 changed snd_queuelen++ to snd_queuelen += pbuf_clen(p).
766 2007-07-24 Simon Goldschmidt
767 * api_msg.c, tcp.c: Fix bug #20480: Check the pcb passed to tcp_listen() for the
768 correct state (must be CLOSED).
770 2007-07-13 Thomas Taranowski (commited by Jared Grubb)
771 * memp.c: Fix bug #20478: memp_malloc returned NULL+MEMP_SIZE on failed
772 allocation. It now returns NULL.
774 2007-07-13 Frédéric Bernon
775 * api_msg.c: Fix bug #20318: api_msg "recv" callbacks don't call pbuf_free in
778 2007-07-13 Frédéric Bernon
779 * api_msg.c: Fix bug #20315: possible memory leak problem if tcp_listen failed,
780 because current code doesn't follow rawapi.txt documentation.
782 2007-07-13 Kieran Mansley
783 * src/core/tcp_in.c Apply patch#5741 from Oleg Tyshev to fix bug in
784 out of sequence processing of received packets
786 2007-07-03 Simon Goldschmidt
787 * nearly-all-files: Added assertions where PBUF_RAM pbufs are used and an
788 assumption is made that this pbuf is in one piece (i.e. not chained). These
789 assumptions clash with the possibility of converting to fully pool-based
790 pbuf implementations, where PBUF_RAM pbufs might be chained.
792 2007-07-03 Simon Goldschmidt
793 * api.h, api_lib.c, api_msg.c: Final fix for bug #20021 and some other problems
794 when closing tcp netconns: removed conn->sem, less context switches when
795 closing, both netconn_close and netconn_delete should safely close tcp
798 2007-07-02 Simon Goldschmidt
799 * ipv4/ip.h, ipv6/ip.h, opt.h, netif.h, etharp.h, ipv4/ip.c, netif.c, raw.c,
800 tcp_out.c, udp.c, etharp.c: Added option LWIP_NETIF_HWADDRHINT (default=off)
801 to cache ARP table indices with each pcb instead of single-entry cache for
804 2007-07-02 Simon Goldschmidt
805 * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Added some ASSERTS and casts to prevent
806 warnings when assigning to smaller types.
808 2007-06-28 Simon Goldschmidt
809 * tcp_out.c: Added check to prevent tcp_pcb->snd_queuelen from overflowing.
811 2007-06-28 Simon Goldschmidt
812 * tcp.h: Fixed bug #20287: Fixed nagle algorithm (sending was done too early if
813 a segment contained chained pbufs)
815 2007-06-28 Frédéric Bernon
816 * autoip.c: replace most of rand() calls by a macro LWIP_AUTOIP_RAND which compute
817 a "pseudo-random" value based on netif's MAC and some autoip fields. It's always
818 possible to define this macro in your own lwipopts.h to always use C library's
819 rand(). Note that autoip_create_rand_addr doesn't use this macro.
821 2007-06-28 Frédéric Bernon
822 * netifapi.h, netifapi.c, tcpip.h, tcpip.c: Update code to handle the option
823 LWIP_TCPIP_CORE_LOCKING, and do some changes to be coherent with last modifications
824 in api_lib/api_msg (use pointers and not type with table, etc...)
826 2007-06-26 Simon Goldschmidt
827 * udp.h: Fixed bug #20259: struct udp_hdr was lacking the packin defines.
829 2007-06-25 Simon Goldschmidt
830 * udp.c: Fixed bug #20253: icmp_dest_unreach was called with a wrong p->payload
831 for udp packets with no matching pcb.
833 2007-06-25 Simon Goldschmidt
834 * udp.c: Fixed bug #20220: UDP PCB search in udp_input(): a non-local match
835 could get udp input packets if the remote side matched.
837 2007-06-13 Simon Goldschmidt
838 * netif.c: Fixed bug #20180 (TCP pcbs listening on IP_ADDR_ANY could get
839 changed in netif_set_ipaddr if previous netif->ip_addr.addr was 0.
841 2007-06-13 Simon Goldschmidt
842 * api_msg.c: pcb_new sets conn->err if protocol is not implemented
843 -> netconn_new_..() does not allocate a new connection for unsupported
846 2007-06-13 Frédéric Bernon, Simon Goldschmidt
847 * api_lib.c: change return expression in netconn_addr and netconn_peer, because
848 conn->err was reset to ERR_OK without any reasons (and error was lost)...
850 2007-06-13 Frédéric Bernon, Matthias Weisser
851 * opt.h, mem.h, mem.c, memp.c, pbuf.c, ip_frag.c, vj.c: Fix bug #20162. Rename
852 MEM_ALIGN in LWIP_MEM_ALIGN and MEM_ALIGN_SIZE in LWIP_MEM_ALIGN_SIZE to avoid
853 some macro names collision with some OS macros.
855 2007-06-11 Simon Goldschmidt
856 * udp.c: UDP Lite: corrected the use of chksum_len (based on RFC3828: if it's 0,
857 create checksum over the complete packet. On RX, if it's < 8 (and not 0),
858 discard the packet. Also removed the duplicate 'udphdr->chksum = 0' for both
861 2007-06-11 Srinivas Gollakota & Oleg Tyshev
862 * tcp_out.c: Fix for bug #20075 : "A problem with keep-alive timer and TCP flags"
863 where TCP flags wasn't initialized in tcp_keepalive.
865 2007-06-03 Simon Goldschmidt
866 * udp.c: udp_input(): Input pbuf was not freed if pcb had no recv function
867 registered, p->payload was modified without modifying p->len if sending
868 icmp_dest_unreach() (had no negative effect but was definitively wrong).
870 2007-06-03 Simon Goldschmidt
871 * icmp.c: Corrected bug #19937: For responding to an icmp echo request, icmp
872 re-used the input pbuf even if that didn't have enough space to include the
873 link headers. Now the space is tested and a new pbuf is allocated for the
874 echo response packet if the echo request pbuf isn't big enough.
876 2007-06-01 Simon Goldschmidt
877 * sockets.c: Checked in patch #5914: Moved sockopt processing into tcpip_thread.
879 2007-05-23 Frédéric Bernon
880 * api_lib.c, sockets.c: Fixed bug #5958 for netconn_listen (acceptmbox only
881 allocated by do_listen if success) and netconn_accept errors handling. In
882 most of api_lib functions, we replace some errors checkings like "if (conn==NULL)"
883 by ASSERT, except for netconn_delete.
885 2007-05-23 Frédéric Bernon
886 * api_lib.c: Fixed bug #5957 "Safe-thread problem inside netconn_recv" to return
887 an error code if it's impossible to fetch a pbuf on a TCP connection (and not
888 directly close the recvmbox).
890 2007-05-22 Simon Goldschmidt
891 * tcp.c: Fixed bug #1895 (tcp_bind not correct) by introducing a list of
892 bound but unconnected (and non-listening) tcp_pcbs.
894 2007-05-22 Frédéric Bernon
895 * sys.h, sys.c, api_lib.c, tcpip.c: remove sys_mbox_fetch_timeout() (was only
896 used for LWIP_SO_RCVTIMEO option) and use sys_arch_mbox_fetch() instead of
897 sys_mbox_fetch() in api files. Now, users SHOULD NOT use internal lwIP features
898 like "sys_timeout" in their application threads.
900 2007-05-22 Frédéric Bernon
901 * api.h, api_lib.c, api_msg.h, api_msg.c: change the struct api_msg_msg to see
902 which parameters are used by which do_xxx function, and to avoid "misusing"
903 parameters (patch #5938).
905 2007-05-22 Simon Goldschmidt
906 * api_lib.c, api_msg.c, raw.c, api.h, api_msg.h, raw.h: Included patch #5938:
907 changed raw_pcb.protocol from u16_t to u8_t since for IPv4 and IPv6, proto
908 is only 8 bits wide. This affects the api, as there, the protocol was
911 2007-05-18 Simon Goldschmidt
912 * memp.c: addition to patch #5913: smaller pointer was returned but
913 memp_memory was the same size -> did not save memory.
915 2007-05-16 Simon Goldschmidt
916 * loopif.c, slipif.c: Fix bug #19729: free pbuf if netif->input() returns
919 2007-05-16 Simon Goldschmidt
920 * api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same
921 as the one of the netif used for sending to prevent sending from old
922 addresses after a netif address gets changed (partly fixes bug #3168).
924 2007-05-16 Frédéric Bernon
925 * tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work
926 with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in
927 tcpip_init) because we have to be sure that network interfaces are already
928 added (mac filter is updated only in igmp_init for the moment).
930 2007-05-16 Simon Goldschmidt
931 * mem.c, memp.c: Removed semaphores from memp, changed sys_sem_wait calls
932 into sys_arch_sem_wait calls to prevent timers from running while waiting
933 for the heap. This fixes bug #19167.
935 2007-05-13 Simon Goldschmidt
936 * tcp.h, sockets.h, sockets.c: Fixed bug from patch #5865 by moving the defines
937 for socket options (lwip_set/-getsockopt) used with level IPPROTO_TCP from
940 2007-05-07 Simon Goldschmidt
941 * mem.c: Another attempt to fix bug #17922.
943 2007-05-04 Simon Goldschmidt
944 * pbuf.c, pbuf.h, etharp.c: Further update to ARP queueing: Changed pbuf_copy()
945 implementation so that it can be reused (don't allocate the target
946 pbuf inside pbuf_copy()).
948 2007-05-04 Simon Goldschmidt
949 * memp.c: checked in patch #5913: in memp_malloc() we can return memp as mem
950 to save a little RAM (next pointer of memp is not used while not in pool).
953 * sockets.c: Fix ioctl FIONREAD when some data remains from last recv.
956 2007-04-23 Simon Goldschmidt
957 * loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results
958 in NULL reference for incoming TCP packets". Loopif has to be configured
959 (using LWIP_LOOPIF_MULTITHREADING) to directly call netif->input()
960 (multithreading environments, e.g. netif->input() = tcpip_input()) or
961 putting packets on a list that is fed to the stack by calling loopif_poll()
962 (single-thread / NO_SYS / polling environment where e.g.
963 netif->input() = ip_input).
965 2007-04-17 Jonathan Larmour
966 * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold
967 the difference between two u16_t's.
968 * sockets.h: FD_SETSIZE needs to match number of sockets, which is
969 MEMP_NUM_NETCONN in sockets.c right now.
971 2007-04-12 Jonathan Larmour
972 * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580).
974 2007-04-12 Kieran Mansley
975 * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Modify way the retransmission
976 timer is reset to fix bug#19434, with help from Oleg Tyshev.
978 2007-04-11 Simon Goldschmidt
979 * etharp.c, pbuf.c, pbuf.h: 3rd fix for bug #11400 (arp-queuing): More pbufs than
980 previously thought need to be copied (everything but PBUF_ROM!). Cleaned up
981 pbuf.c: removed functions no needed any more (by etharp).
983 2007-04-11 Kieran Mansley
984 * inet.c, ip_addr.h, sockets.h, sys.h, tcp.h: Apply patch #5745: Fix
985 "Constant is long" warnings with 16bit compilers. Contributed by
986 avatar@mmlab.cse.yzu.edu.tw
988 2007-04-05 Frédéric Bernon, Jonathan Larmour
989 * api_msg.c: Fix bug #16830: "err_tcp() posts to connection mailbox when no pend on
990 the mailbox is active". Now, the post is only done during a connect, and do_send,
991 do_write and do_join_leave_group don't do anything if a previous error was signaled.
993 2007-04-03 Frédéric Bernon
994 * ip.c: Don't set the IP_DF ("Don't fragment") flag in the IP header in IP output
995 packets. See patch #5834.
997 2007-03-30 Frédéric Bernon
998 * api_msg.c: add a "pcb_new" helper function to avoid redundant code, and to add
999 missing pcb allocations checking (in do_bind, and for each raw_new). Fix style.
1001 2007-03-30 Frédéric Bernon
1002 * most of files: prefix all debug.h define with "LWIP_" to avoid any conflict with
1003 others environment defines (these were too "generic").
1005 2007-03-28 Frédéric Bernon
1006 * api.h, api_lib.c, sockets.c: netbuf_ref doesn't check its internal pbuf_alloc call
1007 result and can cause a crash. lwip_send now check netbuf_ref result.
1009 2007-03-28 Simon Goldschmidt
1010 * sockets.c Remove "#include <errno.h>" from sockets.c to avoid multiple
1011 definition of macros (in errno.h and lwip/arch.h) if LWIP_PROVIDE_ERRNO is
1012 defined. This is the way it should have been already (looking at
1015 2007-03-28 Kieran Mansley
1016 * opt.h Change default PBUF_POOL_BUFSIZE (again) to accomodate default MSS +
1017 IP and TCP headers *and* physical link headers
1019 2007-03-26 Frédéric Bernon (based on patch from Dmitry Potapov)
1020 * api_lib.c: patch for netconn_write(), fixes a possible race condition which cause
1021 to send some garbage. It is not a definitive solution, but the patch does solve
1022 the problem for most cases.
1024 2007-03-22 Frédéric Bernon
1025 * api_msg.h, api_msg.c: Remove obsolete API_MSG_ACCEPT and do_accept (never used).
1027 2007-03-22 Frédéric Bernon
1028 * api_lib.c: somes resources couldn't be freed if there was errors during
1029 netconn_new_with_proto_and_callback.
1031 2007-03-22 Frédéric Bernon
1032 * ethernetif.c: update netif->input calls to check return value. In older ports,
1033 it's a good idea to upgrade them, even if before, there could be another problem
1034 (access to an uninitialized mailbox).
1036 2007-03-21 Simon Goldschmidt
1037 * sockets.c: fixed bug #5067 (essentialy a signed/unsigned warning fixed
1038 by casting to unsigned).
1040 2007-03-21 Frédéric Bernon
1041 * api_lib.c, api_msg.c, tcpip.c: integrate sys_mbox_fetch(conn->mbox, NULL) calls from
1042 api_lib.c to tcpip.c's tcpip_apimsg(). Now, use a local variable and not a
1043 dynamic one from memp to send tcpip_msg to tcpip_thread in a synchrone call.
1044 Free tcpip_msg from tcpip_apimsg is not done in tcpip_thread. This give a
1045 faster and more reliable communication between api_lib and tcpip.
1047 2007-03-21 Frédéric Bernon
1048 * opt.h: Add LWIP_NETIF_CALLBACK (to avoid compiler warning) and set it to 0.
1050 2007-03-21 Frédéric Bernon
1051 * api_msg.c, igmp.c, igmp.h: Fix C++ style comments
1053 2007-03-21 Kieran Mansley
1054 * opt.h Change default PBUF_POOL_BUFSIZE to accomodate default MSS +
1057 2007-03-21 Kieran Mansley
1058 * Fix all uses of pbuf_header to check the return value. In some
1059 cases just assert if it fails as I'm not sure how to fix them, but
1060 this is no worse than before when they would carry on regardless
1063 2007-03-21 Kieran Mansley
1064 * sockets.c, igmp.c, igmp.h, memp.h: Fix C++ style comments and
1065 comment out missing header include in icmp.c
1067 2007-03-20 Frédéric Bernon
1068 * memp.h, stats.c: Fix stats_display function where memp_names table wasn't
1069 synchronized with memp.h.
1071 2007-03-20 Frédéric Bernon
1072 * tcpip.c: Initialize tcpip's mbox, and verify if initialized in tcpip_input,
1073 tcpip_ethinput, tcpip_callback, tcpip_apimsg, to fix a init problem with
1074 network interfaces. Also fix a compiler warning.
1076 2007-03-20 Kieran Mansley
1077 * udp.c: Only try and use pbuf_header() to make space for headers if
1078 not a ROM or REF pbuf.
1080 2007-03-19 Frédéric Bernon
1081 * api_msg.h, api_msg.c, tcpip.h, tcpip.c: Add return types to tcpip_apimsg()
1084 2007-03-19 Frédéric Bernon
1085 * Remove unimplemented "memp_realloc" function from memp.h.
1087 2007-03-11 Simon Goldschmidt
1088 * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused
1091 2007-03-11 Simon Goldschmidt (based on patch from Dmitry Potapov)
1092 * api_lib.c, sockets.c, api.h, api_msg.h, sockets.h: Fixed bug #19251
1093 (missing `const' qualifier in socket functions), to get more compatible to
1094 standard POSIX sockets.
1096 2007-03-11 Frédéric Bernon (based on patch from Dmitry Potapov)
1097 * sockets.c: Add asserts inside bind, connect and sendto to check input
1098 parameters. Remove excessive set_errno() calls after get_socket(), because
1099 errno is set inside of get_socket(). Move last sock_set_errno() inside
1102 2007-03-09 Simon Goldschmidt
1103 * memp.c: Fixed bug #11400: New etharp queueing introduced bug: memp_memory
1104 was allocated too small.
1106 2007-03-06 Simon Goldschmidt
1107 * tcpip.c: Initialize dhcp timers in tcpip_thread (if LWIP_DHCP) to protect
1108 the stack from concurrent access.
1110 2007-03-06 Frédéric Bernon, Dmitry Potapov
1111 * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy
1112 call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input().
1114 2007-03-06 Simon Goldschmidt
1115 * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files
1116 if IP_FRAG == 0 and IP_REASSEMBLY == 0
1118 2007-03-06 Frédéric Bernon, Simon Goldschmidt
1119 * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration
1120 option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput.
1121 Allow to do ARP processing for incoming packets inside tcpip_thread
1122 (protecting ARP layer against concurrent access). You can also disable
1123 old code using tcp_input with new define ETHARP_TCPIP_INPUT set to 0.
1124 Older ports have to use tcpip_ethinput.
1126 2007-03-06 Simon Goldschmidt (based on patch from Dmitry Potapov)
1127 * err.h, err.c: fixed compiler warning "initialization dircards qualifiers
1128 from pointer target type"
1130 2007-03-05 Frédéric Bernon
1131 * opt.h, sockets.h: add new configuration options (LWIP_POSIX_SOCKETS_IO_NAMES,
1132 ETHARP_TRUST_IP_MAC, review SO_REUSE)
1134 2007-03-04 Frédéric Bernon
1135 * api_msg.c: Remove some compiler warnings : parameter "pcb" was never
1138 2007-03-04 Frédéric Bernon
1139 * api_lib.c: Fix "[patch #5764] api_lib.c cleanup: after patch #5687" (from
1141 The api_msg struct stay on the stack (not moved to netconn struct).
1143 2007-03-04 Simon Goldschmidt (based on patch from Dmitry Potapov)
1144 * pbuf.c: Fix BUG#19168 - pbuf_free can cause deadlock (if
1145 SYS_LIGHTWEIGHT_PROT=1 & freeing PBUF_RAM when mem_sem is not available)
1146 Also fixed cast warning in pbuf_alloc()
1148 2007-03-04 Simon Goldschmidt
1149 * etharp.c, etharp.h, memp.c, memp.h, opt.h: Fix BUG#11400 - don't corrupt
1150 existing pbuf chain when enqueuing multiple pbufs to a pending ARP request
1152 2007-03-03 Frédéric Bernon
1153 * udp.c: remove obsolete line "static struct udp_pcb *pcb_cache = NULL;"
1154 It is static, and never used in udp.c except udp_init().
1156 2007-03-02 Simon Goldschmidt
1157 * tcpip.c: Moved call to ip_init(), udp_init() and tcp_init() from
1158 tcpip_thread() to tcpip_init(). This way, raw API connections can be
1159 initialized before tcpip_thread is running (e.g. before OS is started)
1161 2007-03-02 Frédéric Bernon
1162 * rawapi.txt: Fix documentation mismatch with etharp.h about etharp_tmr's call
1165 2007-02-28 Kieran Mansley
1166 * pbuf.c: Fix BUG#17645 - ensure pbuf payload pointer is not moved
1167 outside the region of the pbuf by pbuf_header()
1169 2007-02-28 Kieran Mansley
1170 * sockets.c: Fix BUG#19161 - ensure milliseconds timeout is non-zero
1171 when supplied timeout is also non-zero
1175 2006-12-05 Leon Woestenberg
1176 * CHANGELOG: Mention STABLE-1.2.0 release.
1180 2006-12-01 Christiaan Simons
1181 * mem.h, opt.h: Added MEM_LIBC_MALLOC option.
1182 Note this is a workaround. Currently I have no other options left.
1184 2006-10-26 Christiaan Simons (accepted patch by Jonathan Larmour)
1185 * ipv4/ip_frag.c: rename MAX_MTU to IP_FRAG_MAX_MTU and move define
1186 to include/lwip/opt.h.
1187 * ipv4/lwip/ip_frag.h: Remove unused IP_REASS_INTERVAL.
1188 Move IP_REASS_MAXAGE and IP_REASS_BUFSIZE to include/lwip/opt.h.
1189 * opt.h: Add above new options.
1191 2006-08-18 Christiaan Simons
1192 * tcp_{in,out}.c: added SNMP counters.
1193 * ipv4/ip.c: added SNMP counters.
1194 * ipv4/ip_frag.c: added SNMP counters.
1196 2006-08-08 Christiaan Simons
1197 * etharp.{c,h}: added etharp_find_addr() to read
1198 (stable) ethernet/IP address pair from ARP table
1200 2006-07-14 Christiaan Simons
1201 * mib_structs.c: added
1202 * include/lwip/snmp_structs.h: added
1203 * netif.{c,h}, netif/ethernetif.c: added SNMP statistics to netif struct
1205 2006-07-06 Christiaan Simons
1206 * snmp/asn1_{enc,dec}.c added
1208 * snmp/msg_{in,out}.c added
1209 * include/lwip/snmp_asn1.h added
1210 * include/lwip/snmp_msg.h added
1211 * doc/snmp_agent.txt added
1213 2006-03-29 Christiaan Simons
1214 * inet.c, inet.h: Added platform byteswap support.
1215 Added LWIP_PLATFORM_BYTESWAP define (defaults to 0) and
1216 optional LWIP_PLATFORM_HTONS(), LWIP_PLATFORM_HTONL() macros.
1220 2006-11-30 Christiaan Simons
1221 * dhcp.c: Fixed false triggers of request_timeout.
1223 2006-11-28 Christiaan Simons
1224 * netif.c: In netif_add() fixed missing clear of ip_addr, netmask, gw and flags.
1226 2006-10-11 Christiaan Simons
1227 * api_lib.c etharp.c, ip.c, memp.c, stats.c, sys.{c,h} tcp.h:
1228 Partially accepted patch #5449 for ANSI C compatibility / build fixes.
1229 * ipv4/lwip/ip.h ipv6/lwip/ip.h: Corrected UDP-Lite protocol
1230 identifier from 170 to 136 (bug #17574).
1232 2006-10-10 Christiaan Simons
1233 * api_msg.c: Fixed Nagle algorithm as reported by Bob Grice.
1235 2006-08-17 Christiaan Simons
1236 * udp.c: Fixed bug #17200, added check for broadcast
1237 destinations for PCBs bound to a unicast address.
1239 2006-08-07 Christiaan Simons
1240 * api_msg.c: Flushing TCP output in do_close() (bug #15926).
1242 2006-06-27 Christiaan Simons
1243 * api_msg.c: Applied patch for cold case (bug #11135).
1244 In accept_function() ensure newconn->callback is always initialized.
1246 2006-06-15 Christiaan Simons
1247 * mem.h: added MEM_SIZE_F alias to fix an ancient cold case (bug #1748),
1248 facilitate printing of mem_size_t and u16_t statistics.
1250 2006-06-14 Christiaan Simons
1251 * api_msg.c: Applied patch #5146 to handle allocation failures
1252 in accept() by Kevin Lawson.
1254 2006-05-26 Christiaan Simons
1255 * api_lib.c: Removed conn->sem creation and destruction
1256 from netconn_write() and added sys_sem_new to netconn_new_*.
1260 2006-03-03 Christiaan Simons
1261 * ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap
1262 access and added pbuf_alloc() return value checks.
1264 2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net>
1265 * tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is
1266 now handled by the checksum routine properly.
1268 2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1269 * pbuf.c: Fix alignment; pbuf_init() would not work unless
1270 pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.)
1272 2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net>
1273 * tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch
1274 submitted by Mitrani Hiroshi.
1276 2005-12-15 Christiaan Simons
1277 * inet.c: Disabled the added summing routine to preserve code space.
1279 2005-12-14 Leon Woestenberg <leon.woestenberg@gmx.net>
1280 * tcp_in.c: Duplicate FIN ACK race condition fix by Kelvin Lawson.
1281 Added Curt McDowell's optimized checksumming routine for future
1282 inclusion. Need to create test case for unaliged, aligned, odd,
1283 even length combination of cases on various endianess machines.
1285 2005-12-09 Christiaan Simons
1286 * inet.c: Rewrote standard checksum routine in proper portable C.
1288 2005-11-25 Christiaan Simons
1289 * udp.c tcp.c: Removed SO_REUSE hack. Should reside in socket code only.
1290 * *.c: introduced cc.h LWIP_DEBUG formatters matching the u16_t, s16_t,
1291 u32_t, s32_t typedefs. This solves most debug word-length assumes.
1293 2005-07-17 Leon Woestenberg <leon.woestenberg@gmx.net>
1294 * inet.c: Fixed unaligned 16-bit access in the standard checksum
1295 routine by Peter Jolasson.
1296 * slipif.c: Fixed implementation assumption of single-pbuf datagrams.
1298 2005-02-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1299 * tcp_out.c: Fixed uninitialized 'queue' referenced in memerr branch.
1300 * tcp_{out|in}.c: Applied patch fixing unaligned access.
1302 2005-01-04 Leon Woestenberg <leon.woestenberg@gmx.net>
1303 * pbuf.c: Fixed missing semicolon after LWIP_DEBUG statement.
1305 2005-01-03 Leon Woestenberg <leon.woestenberg@gmx.net>
1306 * udp.c: UDP pcb->recv() was called even when it was NULL.
1310 2004-12-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1311 * etharp.*: Disabled multiple packets on the ARP queue.
1312 This clashes with TCP queueing.
1314 2004-11-28 Leon Woestenberg <leon.woestenberg@gmx.net>
1315 * etharp.*: Fixed race condition from ARP request to ARP timeout.
1316 Halved the ARP period, doubled the period counts.
1317 ETHARP_MAX_PENDING now should be at least 2. This prevents
1318 the counter from reaching 0 right away (which would allow
1319 too little time for ARP responses to be received).
1321 2004-11-25 Leon Woestenberg <leon.woestenberg@gmx.net>
1322 * dhcp.c: Decline messages were not multicast but unicast.
1323 * etharp.c: ETHARP_CREATE is renamed to ETHARP_TRY_HARD.
1324 Do not try hard to insert arbitrary packet's source address,
1325 etharp_ip_input() now calls etharp_update() without ETHARP_TRY_HARD.
1326 etharp_query() now always DOES call ETHARP_TRY_HARD so that users
1327 querying an address will see it appear in the cache (DHCP could
1328 suffer from this when a server invalidly gave an in-use address.)
1329 * ipv4/ip_addr.h: Renamed ip_addr_maskcmp() to _netcmp() as we are
1330 comparing network addresses (identifiers), not the network masks
1332 * ipv4/ip_addr.c: ip_addr_isbroadcast() now checks that the given
1333 IP address actually belongs to the network of the given interface.
1335 2004-11-24 Kieran Mansley <kjm25@cam.ac.uk>
1336 * tcp.c: Increment pcb->snd_buf when ACK is received in SYN_SENT state.
1340 2004-10-16 Kieran Mansley <kjm25@cam.ac.uk>
1341 * tcp.c: Add code to tcp_recved() to send an ACK (window update) immediately,
1342 even if one is already pending, if the rcv_wnd is above a threshold
1343 (currently TCP_WND/2). This avoids waiting for a timer to expire to send a
1344 delayed ACK in order to open the window if the stack is only receiving data.
1346 2004-09-12 Kieran Mansley <kjm25@cam.ac.uk>
1347 * tcp*.*: Retransmit time-out handling improvement by Sam Jansen.
1349 2004-08-20 Tony Mountifield <tony@softins.co.uk>
1350 * etharp.c: Make sure the first pbuf queued on an ARP entry
1351 is properly ref counted.
1353 2004-07-27 Tony Mountifield <tony@softins.co.uk>
1354 * debug.h: Added (int) cast in LWIP_DEBUGF() to avoid compiler
1355 warnings about comparison.
1356 * pbuf.c: Stopped compiler complaining of empty if statement
1357 when LWIP_DEBUGF() empty. Closed an unclosed comment.
1358 * tcp.c: Stopped compiler complaining of empty if statement
1359 when LWIP_DEBUGF() empty.
1360 * ip.h Corrected IPH_TOS() macro: returns a byte, so doesn't need htons().
1361 * inet.c: Added a couple of casts to quiet the compiler.
1362 No need to test isascii(c) before isdigit(c) or isxdigit(c).
1364 2004-07-22 Tony Mountifield <tony@softins.co.uk>
1365 * inet.c: Made data types consistent in inet_ntoa().
1366 Added casts for return values of checksum routines, to pacify compiler.
1367 * ip_frag.c, tcp_out.c, sockets.c, pbuf.c
1368 Small corrections to some debugging statements, to pacify compiler.
1370 2004-07-21 Tony Mountifield <tony@softins.co.uk>
1371 * etharp.c: Removed spurious semicolon and added missing end-of-comment.
1372 * ethernetif.c Updated low_level_output() to match prototype for
1373 netif->linkoutput and changed low_level_input() similarly for consistency.
1374 * api_msg.c: Changed recv_raw() from int to u8_t, to match prototype
1375 of raw_recv() in raw.h and so avoid compiler error.
1376 * sockets.c: Added trivial (int) cast to keep compiler happier.
1377 * ip.c, netif.c Changed debug statements to use the tidier ip4_addrN() macros.
1383 2004-07-05 Leon Woestenberg <leon.woestenberg@gmx.net>
1384 * sockets.*: Restructured LWIP_PRIVATE_TIMEVAL. Make sure
1385 your cc.h file defines this either 1 or 0. If non-defined,
1387 * .c: Added <string.h> and <errno.h> includes where used.
1388 * etharp.c: Made some array indices unsigned.
1390 2004-06-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1391 * netif.*: Added netif_set_up()/down().
1392 * dhcp.c: Changes to restart program flow.
1394 2004-05-07 Leon Woestenberg <leon.woestenberg@gmx.net>
1395 * etharp.c: In find_entry(), instead of a list traversal per candidate, do a
1396 single-pass lookup for different candidates. Should exploit locality.
1398 2004-04-29 Leon Woestenberg <leon.woestenberg@gmx.net>
1399 * tcp*.c: Cleaned up source comment documentation for Doxygen processing.
1400 * opt.h: ETHARP_ALWAYS_INSERT option removed to comply with ARP RFC.
1401 * etharp.c: update_arp_entry() only adds new ARP entries when adviced to by
1402 the caller. This deprecates the ETHARP_ALWAYS_INSERT overrule option.
1406 2004-04-27 Leon Woestenberg <leon.woestenberg@gmx.net>
1407 * etharp.c: Applied patch of bug #8708 by Toni Mountifield with a solution
1408 suggested by Timmy Brolin. Fix for 32-bit processors that cannot access
1409 non-aligned 32-bit words, such as soms 32-bit TCP/IP header fields. Fix
1410 is to prefix the 14-bit Ethernet headers with two padding bytes.
1412 2004-04-23 Leon Woestenberg <leon.woestenberg@gmx.net>
1413 * ip_addr.c: Fix in the ip_addr_isbroadcast() check.
1414 * etharp.c: Fixed the case where the packet that initiates the ARP request
1415 is not queued, and gets lost. Fixed the case where the packets destination
1416 address is already known; we now always queue the packet and perform an ARP
1423 * Fixed TCP bug for SYN_SENT to ESTABLISHED state transition.
1424 * Fixed TCP bug in dequeueing of FIN from out of order segment queue.
1425 * Fixed two possible NULL references in rare cases.
1431 * Fixed DHCP which did not include the IP address in DECLINE messages.
1435 * etharp.c has been hauled over a bit.
1441 * Fixed TCP bug induced by bad window resizing with unidirectional TCP traffic.
1442 * Packets sent from ARP queue had invalid source hardware address.
1446 * Pass-by ARP requests do now update the cache.
1450 * No longer dependent on ctype.h.
1451 * New socket options.
1452 * Raw IP pcb support.
1458 * Some debug formatters and casts fixed.
1459 * Numereous fixes in PPP.
1463 * DEBUGF now is LWIP_DEBUGF
1464 * pbuf_dechain() has been re-enabled.
1465 * Mentioned the changed use of CVS branches in README.
1471 * Fixed pool pbuf memory leak in pbuf_alloc().
1472 Occured if not enough PBUF_POOL pbufs for a packet pbuf chain.
1473 Reported by Savin Zlobec.
1475 * PBUF_POOL chains had their tot_len field not set for non-first
1476 pbufs. Fixed in pbuf_alloc().
1480 * Added PPP stack contributed by Marc Boucher
1484 * Now drops short packets for ICMP/UDP/TCP protocols. More robust.
1486 * ARP queueuing now queues the latest packet instead of the first.
1487 This is the RFC recommended behaviour, but can be overridden in
1494 * TCP has been fixed to deal with the new use of the pbuf->ref
1497 * DHCP dhcp_inform() crash bug fixed.
1501 * Removed pbuf_pool_free_cache and pbuf_pool_alloc_cache. Also removed
1502 pbuf_refresh(). This has sped up pbuf pool operations considerably.
1503 Implemented by David Haas.
1509 * The packet buffer implementation has been enhanced to support
1510 zero-copy and copy-on-demand for packet buffers which have their
1511 payloads in application-managed memory.
1512 Implemented by David Haas.
1514 Use PBUF_REF to make a pbuf refer to RAM. lwIP will use zero-copy
1515 if an outgoing packet can be directly sent on the link, or perform
1516 a copy-on-demand when necessary.
1518 The application can safely assume the packet is sent, and the RAM
1519 is available to the application directly after calling udp_send()
1520 or similar function.
1524 * ARP_QUEUEING should now correctly work for all cases, including
1526 Implemented by Leon Woestenberg.
1530 * IP_ADDR_ANY is no longer a NULL pointer. Instead, it is a pointer
1531 to a '0.0.0.0' IP address.
1533 * The packet buffer implementation is changed. The pbuf->ref counter
1534 meaning has changed, and several pbuf functions have been
1535 adapted accordingly.
1537 * netif drivers have to be changed to set the hardware address length field
1538 that must be initialized correctly by the driver (hint: 6 for Ethernet MAC).
1539 See the contrib/ports/c16x cs8900 driver as a driver example.
1541 * netif's have a dhcp field that must be initialized to NULL by the driver.
1542 See the contrib/ports/c16x cs8900 driver as a driver example.
1544 (0.5.x) This file has been unmaintained up to 0.6.1. All changes are
1545 logged in CVS but have not been explained here.
1547 (0.5.3) Changes since version 0.5.2
1551 * memp_malloc(MEMP_API_MSG) could fail with multiple application
1552 threads because it wasn't protected by semaphores.
1556 * struct ip_addr now packed.
1558 * The name of the time variable in arp.c has been changed to ctime
1559 to avoid conflicts with the time() function.
1561 (0.5.2) Changes since version 0.5.1
1565 * A new TCP function, tcp_tmr(), now handles both TCP timers.
1569 * A bug in tcp_parseopt() could cause the stack to hang because of a
1570 malformed TCP option.
1572 * The address of new connections in the accept() function in the BSD
1573 socket library was not handled correctly.
1575 * pbuf_dechain() did not update the ->tot_len field of the tail.
1577 * Aborted TCP connections were not handled correctly in all
1582 * All protocol header structs are now packed.
1584 * The ->len field in the tcp_seg structure now counts the actual
1585 amount of data, and does not add one for SYN and FIN segments.
1587 (0.5.1) Changes since version 0.5.0
1591 * Possible to run as a user process under Linux.
1593 * Preliminary support for cross platform packed structs.
1595 * ARP timer now implemented.
1599 * TCP output queue length was badly initialized when opening
1602 * TCP delayed ACKs were not sent correctly.
1604 * Explicit initialization of BSS segment variables.
1606 * read() in BSD socket library could drop data.
1608 * Problems with memory alignment.
1610 * Situations when all TCP buffers were used could lead to
1613 * TCP MSS option wasn't parsed correctly.
1615 * Problems with UDP checksum calculation.
1617 * IP multicast address tests had endianess problems.
1619 * ARP requests had wrong destination hardware address.
1623 * struct eth_addr changed from u16_t[3] array to u8_t[6].
1625 * A ->linkoutput() member was added to struct netif.
1627 * TCP and UDP ->dest_* struct members where changed to ->remote_*.
1629 * ntoh* macros are now null definitions for big endian CPUs.
1631 (0.5.0) Changes since version 0.4.2
1635 * Redesigned operating system emulation layer to make porting easier.
1637 * Better control over TCP output buffers.
1639 * Documenation added.
1643 * Locking issues in buffer management.
1645 * Bugfixes in the sequential API.
1647 * IP forwarding could cause memory leakage. This has been fixed.
1651 * Directory structure somewhat changed; the core/ tree has been
1654 (0.4.2) Changes since version 0.4.1
1658 * Experimental ARP implementation added.
1660 * Skeleton Ethernet driver added.
1662 * Experimental BSD socket API library added.
1666 * In very intense situations, memory leakage could occur. This has
1671 * Variables named "data" and "code" have been renamed in order to
1672 avoid name conflicts in certain compilers.
1674 * Variable++ have in appliciable cases been translated to ++variable
1675 since some compilers generate better code in the latter case.
1677 (0.4.1) Changes since version 0.4
1681 * TCP: Connection attempts time out earlier than data
1682 transmissions. Nagle algorithm implemented. Push flag set on the
1683 last segment in a burst.
1685 * UDP: experimental support for UDP-Lite extensions.
1689 * TCP: out of order segments were in some cases handled incorrectly,
1690 and this has now been fixed. Delayed acknowledgements was broken
1691 in 0.4, has now been fixed. Binding to an address that is in use
1692 now results in an error. Reset connections sometimes hung an
1693 application; this has been fixed.
1695 * Checksum calculation sometimes failed for chained pbufs with odd
1696 lengths. This has been fixed.
1698 * API: a lot of bug fixes in the API. The UDP API has been improved
1699 and tested. Error reporting and handling has been
1700 improved. Logical flaws and race conditions for incoming TCP
1701 connections has been found and removed.
1703 * Memory manager: alignment issues. Reallocating memory sometimes
1704 failed, this has been fixed.
1706 * Generic library: bcopy was flawed and has been fixed.
1710 * API: all datatypes has been changed from generic ones such as
1711 ints, to specified ones such as u16_t. Functions that return
1712 errors now have the correct type (err_t).
1714 * General: A lot of code cleaned up and debugging code removed. Many
1715 portability issues have been fixed.
1717 * The license was changed; the advertising clause was removed.
1721 * Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri
1722 Kosunen, Mikael Caleres, and Frits Wilmink for reporting and
1725 (0.4) Changes since version 0.3.1
1727 * Memory management has been radically changed; instead of
1728 allocating memory from a shared heap, memory for objects that are
1729 rapidly allocated and deallocated is now kept in pools. Allocation
1730 and deallocation from those memory pools is very fast. The shared
1731 heap is still present but is used less frequently.
1733 * The memory, memory pool, and packet buffer subsystems now support
1734 4-, 2-, or 1-byte alignment.
1736 * "Out of memory" situations are handled in a more robust way.
1738 * Stack usage has been reduced.
1740 * Easier configuration of lwIP parameters such as memory usage,
1741 TTLs, statistics gathering, etc. All configuration parameters are
1742 now kept in a single header file "lwipopts.h".
1744 * The directory structure has been changed slightly so that all
1745 architecture specific files are kept under the src/arch
1748 * Error propagation has been improved, both in the protocol modules
1751 * The code for the RTXC architecture has been implemented, tested
1754 * Bugs have been found and corrected in the TCP, UDP, IP, API, and
1755 the Internet checksum modules.
1757 * Bugs related to porting between a 32-bit and a 16-bit architecture
1758 have been found and corrected.
1760 * The license has been changed slightly to conform more with the
1761 original BSD license, including the advertisement clause.
1763 (0.3.1) Changes since version 0.3
1765 * Fix of a fatal bug in the buffer management. Pbufs with allocated
1766 RAM never returned the RAM when the pbuf was deallocated.
1768 * TCP congestion control, window updates and retransmissions did not
1769 work correctly. This has now been fixed.
1771 * Bugfixes in the API.
1773 (0.3) Changes since version 0.2
1775 * New and improved directory structure. All include files are now
1776 kept in a dedicated include/ directory.
1778 * The API now has proper error handling. A new function,
1779 netconn_err(), now returns an error code for the connection in
1782 * Improvements in the memory management subsystem. The system now
1783 keeps a pointer to the lowest free memory block. A new function,
1784 mem_malloc2() tries to allocate memory once, and if it fails tries
1785 to free some memory and retry the allocation.
1787 * Much testing has been done with limited memory
1788 configurations. lwIP now does a better job when overloaded.
1790 * Some bugfixes and improvements to the buffer (pbuf) subsystem.
1792 * Many bugfixes in the TCP code:
1794 - Fixed a bug in tcp_close().
1796 - The TCP receive window was incorrectly closed when out of
1797 sequence segments was received. This has been fixed.
1799 - Connections are now timed-out of the FIN-WAIT-2 state.
1801 - The initial congestion window could in some cases be too
1802 large. This has been fixed.
1804 - The retransmission queue could in some cases be screwed up. This
1807 - TCP RST flag now handled correctly.
1809 - Out of sequence data was in some cases never delivered to the
1810 application. This has been fixed.
1812 - Retransmitted segments now contain the correct acknowledgment
1813 number and advertised window.
1815 - TCP retransmission timeout backoffs are not correctly computed
1816 (ala BSD). After a number of retransmissions, TCP now gives up
1819 * TCP connections now are kept on three lists, one for active
1820 connections, one for listening connections, and one for
1821 connections that are in TIME-WAIT. This greatly speeds up the fast
1822 timeout processing for sending delayed ACKs.
1824 * TCP now provides proper feedback to the application when a
1825 connection has been successfully set up.
1827 * More comments have been added to the code. The code has also been
1828 somewhat cleaned up.
1830 (0.2) Initial public release.