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Diffstat (limited to 'firmware/zpu/lwip/lwip-1.3.1/CHANGELOG')
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diff --git a/firmware/zpu/lwip/lwip-1.3.1/CHANGELOG b/firmware/zpu/lwip/lwip-1.3.1/CHANGELOG new file mode 100644 index 000000000..a45765010 --- /dev/null +++ b/firmware/zpu/lwip/lwip-1.3.1/CHANGELOG @@ -0,0 +1,2248 @@ +FUTURE + + * TODO: The lwIP source code makes some invalid assumptions on processor + word-length, storage sizes and alignment. See the mailing lists for + problems with exoteric (/DSP) architectures showing these problems. + We still have to fix some of these issues neatly. + + * TODO: the PPP code is broken in a few ways. There are namespace + collisions on BSD systems and many assumptions on word-length + (sizeof(int)). In ppp.c an assumption is made on the availability of + a thread subsystem. Either PPP needs to be moved to contrib/ports/??? + or rearranged to be more generic. + +HISTORY + +(CVS HEAD) + + * [Enter new changes just after this line - do not remove this line] + + ++ New features: + + ++ Bugfixes: + + +(STABLE-1.3.1) + + ++ New features: + + 2009-05-10 Simon Goldschmidt + * opt.h, sockets.c, pbuf.c, netbuf.h, pbuf.h: task #7013: Added option + LWIP_NETIF_TX_SINGLE_PBUF to try to create transmit packets from only + one pbuf to help MACs that don't support scatter-gather DMA. + + 2009-05-09 Simon Goldschmidt + * icmp.h, icmp.c: Shrinked ICMP code, added option to NOT check icoming + ECHO pbuf for size (just use it): LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN + + 2009-05-05 Simon Goldschmidt, Jakob Stoklund Olesen + * ip.h, ip.c: Added ip_current_netif() & ip_current_header() to receive + extended info about the currently received packet. + + 2009-04-27 Simon Goldschmidt + * sys.h: Made SYS_LIGHTWEIGHT_PROT and sys_now() work with NO_SYS=1 + + 2009-04-25 Simon Goldschmidt + * mem.c, opt.h: Added option MEM_USE_POOLS_TRY_BIGGER_POOL to try the next + bigger malloc pool if one is empty (only usable with MEM_USE_POOLS). + + 2009-04-21 Simon Goldschmidt + * dns.c, init.c, dns.h, opt.h: task #7507, patch #6786: DNS supports static + hosts table. New configuration options DNS_LOCAL_HOSTLIST and + DNS_LOCAL_HOSTLIST_IS_DYNAMIC. Also, DNS_LOOKUP_LOCAL_EXTERN() can be defined + as an external function for lookup. + + 2009-04-15 Simon Goldschmidt + * dhcp.c: patch #6763: Global DHCP XID can be redefined to something more unique + + 2009-03-31 Kieran Mansley + * tcp.c, tcp_out.c, tcp_in.c, sys.h, tcp.h, opts.h: add support for + TCP timestamp options, off by default. Rework tcp_enqueue() to + take option flags rather than specified option data + + 2009-02-18 Simon Goldschmidt + * cc.h: Added printf formatter for size_t: SZT_F + + 2009-02-16 Simon Goldschmidt (patch by Rishi Khan) + * icmp.c, opt.h: patch #6539: (configurable) response to broadcast- and multicast + pings + + 2009-02-12 Simon Goldschmidt + * init.h: Added LWIP_VERSION to get the current version of the stack + + 2009-02-11 Simon Goldschmidt (suggested by Gottfried Spitaler) + * opt.h, memp.h/.c: added MEMP_MEM_MALLOC to use mem_malloc/mem_free instead + of the pool allocator (can save code size with MEM_LIBC_MALLOC if libc-malloc + is otherwise used) + + 2009-01-28 Jonathan Larmour (suggested by Bill Bauerbach) + * ipv4/inet_chksum.c, ipv4/lwip/inet_chksum.h: inet_chksum_pseudo_partial() + is only used by UDPLITE at present, so conditionalise it. + + 2008-12-03 Simon Goldschmidt (base on patch from Luca Ceresoli) + * autoip.c: checked in (slightly modified) patch #6683: Customizable AUTOIP + "seed" address. This should reduce AUTOIP conflicts if + LWIP_AUTOIP_CREATE_SEED_ADDR is overridden. + + 2008-10-02 Jonathan Larmour and Rishi Khan + * sockets.c (lwip_accept): Return EWOULDBLOCK if would block on non-blocking + socket. + + 2008-06-30 Simon Goldschmidt + * mem.c, opt.h, stats.h: fixed bug #21433: Calling mem_free/pbuf_free from + interrupt context isn't safe: LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT allows + mem_free to run between mem_malloc iterations. Added illegal counter for + mem stats. + + 2008-06-27 Simon Goldschmidt + * stats.h/.c, some other files: patch #6483: stats module improvement: + Added defines to display each module's statistic individually, added stats + defines for MEM, MEMP and SYS modules, removed (unused) rexmit counter. + + 2008-06-17 Simon Goldschmidt + * err.h: patch #6459: Made err_t overridable to use a more efficient type + (define LWIP_ERR_T in cc.h) + + 2008-06-17 Simon Goldschmidt + * slipif.c: patch #6480: Added a configuration option for slipif for symmetry + to loopif + + 2008-06-17 Simon Goldschmidt (patch by Luca Ceresoli) + * netif.c, loopif.c, ip.c, netif.h, loopif.h, opt.h: Checked in slightly + modified version of patch # 6370: Moved loopif code to netif.c so that + loopback traffic is supported on all netifs (all local IPs). + Added option to limit loopback packets for each netifs. + + + ++ Bugfixes: + 2009-08-12 Kieran Mansley + * tcp_in.c, tcp.c: Fix bug #27209: handle trimming of segments when + out of window or out of order properly + + 2009-08-12 Kieran Mansley + * tcp_in.c: Fix bug #27199: use snd_wl2 instead of snd_wl1 + + 2009-07-28 Simon Goldschmidt + * mem.h: Fixed bug #27105: "realloc() cannot replace mem_realloc()"s + + 2009-07-27 Kieran Mansley + * api.h api_msg.h netdb.h sockets.h: add missing #include directives + + 2009-07-09 Kieran Mansley + * api_msg.c, sockets.c, api.h: BUG23240 use signed counters for + recv_avail and don't increment counters until message successfully + sent to mbox + + 2009-06-25 Kieran Mansley + * api_msg.c api.h: BUG26722: initialise netconn write variables + in netconn_alloc + + 2009-06-25 Kieran Mansley + * tcp.h: BUG26879: set ret value in TCP_EVENT macros when function is not set + + 2009-06-25 Kieran Mansley + * tcp.c, tcp_in.c, tcp_out.c, tcp.h: BUG26301 and BUG26267: correct + simultaneous close behaviour, and make snd_nxt have the same meaning + as in the RFCs. + + 2009-05-12 Simon Goldschmidt + * etharp.h, etharp.c, netif.c: fixed bug #26507: "Gratuitous ARP depends on + arp_table / uses etharp_query" by adding etharp_gratuitous() + + 2009-05-12 Simon Goldschmidt + * ip.h, ip.c, igmp.c: bug #26487: Added ip_output_if_opt that can add IP options + to the IP header (used by igmp_ip_output_if) + + 2009-05-06 Simon Goldschmidt + * inet_chksum.c: On little endian architectures, use LWIP_PLATFORM_HTONS (if + defined) for SWAP_BYTES_IN_WORD to speed up checksumming. + + 2009-05-05 Simon Goldschmidt + * sockets.c: bug #26405: Prematurely released semaphore causes lwip_select() + to crash + + 2009-05-04 Simon Goldschmidt + * init.c: snmp was not initialized in lwip_init() + + 2009-05-04 Frédéric Bernon + * dhcp.c, netbios.c: Changes if IP_SOF_BROADCAST is enabled. + + 2009-05-03 Simon Goldschmidt + * tcp.h: bug #26349: Nagle algorithm doesn't send although segment is full + (and unsent->next == NULL) + + 2009-05-02 Simon Goldschmidt + * tcpip.h, tcpip.c: fixed tcpip_untimeout (does not need the time, broken after + 1.3.0 in CVS only) - fixes compilation of ppp_oe.c + + 2009-05-02 Simon Goldschmidt + * msg_in.c: fixed bug #25636: SNMPSET value is ignored for integer fields + + 2009-05-01 Simon Goldschmidt + * pap.c: bug #21680: PPP upap_rauthnak() drops legal NAK packets + + 2009-05-01 Simon Goldschmidt + * ppp.c: bug #24228: Memory corruption with PPP and DHCP + + 2009-04-29 Frédéric Bernon + * raw.c, udp.c, init.c, opt.h, ip.h, sockets.h: bug #26309: Implement the + SO(F)_BROADCAST filter for all API layers. Avoid the unindented reception + of broadcast packets even when this option wasn't set. Port maintainers + which want to enable this filter have to set IP_SOF_BROADCAST=1 in opt.h. + If you want this option also filter broadcast on recv operations, you also + have to set IP_SOF_BROADCAST_RECV=1 in opt.h. + + 2009-04-28 Simon Goldschmidt, Jakob Stoklund Olesen + * dhcp.c: patch #6721, bugs #25575, #25576: Some small fixes to DHCP and + DHCP/AUTOIP cooperation + + 2009-04-25 Simon Goldschmidt, Oleg Tyshev + * tcp_out.c: bug #24212: Deadlocked tcp_retransmit due to exceeded pcb->cwnd + Fixed by sorting the unsent and unacked queues (segments are inserted at the + right place in tcp_output and tcp_rexmit). + + 2009-04-25 Simon Goldschmidt + * memp.c, mem.c, memp.h, mem_std.h: bug #26213 "Problem with memory allocation + when debugging": memp_sizes contained the wrong sizes (including sanity + regions); memp pools for MEM_USE_POOLS were too small + + 2009-04-24 Simon Goldschmidt, Frédéric Bernon + * inet.c: patch #6765: Fix a small problem with the last changes (incorrect + behavior, with with ip address string not ended by a '\0', a space or a + end of line) + + 2009-04-19 Simon Goldschmidt + * rawapi.txt: Fixed bug #26069: Corrected documentation: if tcp_connect fails, + pcb->err is called, not pcb->connected (with an error code). + + 2009-04-19 Simon Goldschmidt + * tcp_out.c: Fixed bug #26236: "TCP options (timestamp) don't work with + no-copy-tcpwrite": deallocate option data, only concat segments with same flags + + 2009-04-19 Simon Goldschmidt + * tcp_out.c: Fixed bug #25094: "Zero-length pbuf" (options are now allocated + in the header pbuf, not the data pbuf) + + 2009-04-18 Simon Goldschmidt + * api_msg.c: fixed bug #25695: Segmentation fault in do_writemore() + + 2009-04-15 Simon Goldschmidt + * sockets.c: tried to fix bug #23559: lwip_recvfrom problem with tcp + + 2009-04-15 Simon Goldschmidt + * dhcp.c: task #9192: mem_free of dhcp->options_in and dhcp->msg_in + + 2009-04-15 Simon Goldschmidt + * ip.c, ip6.c, tcp_out.c, ip.h: patch #6808: Add a utility function + ip_hinted_output() (for smaller code mainly) + + 2009-04-15 Simon Goldschmidt + * inet.c: patch #6765: Supporting new line characters in inet_aton() + + 2009-04-15 Simon Goldschmidt + * dhcp.c: patch #6764: DHCP rebind and renew did not send hostnam option; + Converted constant OPTION_MAX_MSG_SIZE to netif->mtu, check if netif->mtu + is big enough in dhcp_start + + 2009-04-15 Simon Goldschmidt + * netbuf.c: bug #26027: netbuf_chain resulted in pbuf memory leak + + 2009-04-15 Simon Goldschmidt + * sockets.c, ppp.c: bug #25763: corrected 4 occurrences of SMEMCPY to MEMCPY + + 2009-04-15 Simon Goldschmidt + * sockets.c: bug #26121: set_errno can be overridden + + 2009-04-09 Kieran Mansley (patch from Luca Ceresoli <lucaceresoli>) + * init.c, opt.h: Patch#6774 TCP_QUEUE_OOSEQ breaks compilation when + LWIP_TCP==0 + + 2009-04-09 Kieran Mansley (patch from Roy Lee <roylee17>) + * tcp.h: Patch#6802 Add do-while-clauses to those function like + macros in tcp.h + + 2009-03-31 Kieran Mansley + * tcp.c, tcp_in.c, tcp_out.c, tcp.h, opt.h: Rework the way window + updates are calculated and sent (BUG20515) + + * tcp_in.c: cope with SYN packets received during established states, + and retransmission of initial SYN. + + * tcp_out.c: set push bit correctly when tcp segments are merged + + 2009-03-27 Kieran Mansley + * tcp_out.c set window correctly on probes (correcting change made + yesterday) + + 2009-03-26 Kieran Mansley + * tcp.c, tcp_in.c, tcp.h: add tcp_abandon() to cope with dropping + connections where no reset required (bug #25622) + + * tcp_out.c: set TCP_ACK flag on keepalive and zero window probes + (bug #20779) + + 2009-02-18 Simon Goldschmidt (Jonathan Larmour and Bill Auerbach) + * ip_frag.c: patch #6528: the buffer used for IP_FRAG_USES_STATIC_BUF could be + too small depending on MEM_ALIGNMENT + + 2009-02-16 Simon Goldschmidt + * sockets.h/.c, api_*.h/.c: fixed arguments of socket functions to match the standard; + converted size argument of netconn_write to 'size_t' + + 2009-02-16 Simon Goldschmidt + * tcp.h, tcp.c: fixed bug #24440: TCP connection close problem on 64-bit host + by moving accept callback function pointer to TCP_PCB_COMMON + + 2009-02-12 Simon Goldschmidt + * dhcp.c: fixed bug #25345 (DHCPDECLINE is sent with "Maximum message size" + option) + + 2009-02-11 Simon Goldschmidt + * dhcp.c: fixed bug #24480 (releasing old udp_pdb and pbuf in dhcp_start) + + 2009-02-11 Simon Goldschmidt + * opt.h, api_msg.c: added configurable default valud for netconn->recv_bufsize: + RECV_BUFSIZE_DEFAULT (fixes bug #23726: pbuf pool exhaustion on slow recv()) + + 2009-02-10 Simon Goldschmidt + * tcp.c: fixed bug #25467: Listen backlog is not reset on timeout in SYN_RCVD: + Accepts_pending is decrease on a corresponding listen pcb when a connection + in state SYN_RCVD is close. + + 2009-01-28 Jonathan Larmour + * pbuf.c: reclaim pbufs from TCP out-of-sequence segments if we run + out of pool pbufs. + + 2008-12-19 Simon Goldschmidt + * many files: patch #6699: fixed some warnings on platform where sizeof(int) == 2 + + 2008-12-10 Tamas Somogyi, Frédéric Bernon + * sockets.c: fixed bug #25051: lwip_recvfrom problem with udp: fromaddr and + port uses deleted netbuf. + + 2008-10-18 Simon Goldschmidt + * tcp_in.c: fixed bug ##24596: Vulnerability on faulty TCP options length + in tcp_parseopt + + 2008-10-15 Simon Goldschmidt + * ip_frag.c: fixed bug #24517: IP reassembly crashes on unaligned IP headers + by packing the struct ip_reass_helper. + + 2008-10-03 David Woodhouse, Jonathan Larmour + * etharp.c (etharp_arp_input): Fix type aliasing problem copying ip address. + + 2008-10-02 Jonathan Larmour + * dns.c: Hard-code structure sizes, to avoid issues on some compilers where + padding is included. + + 2008-09-30 Jonathan Larmour + * sockets.c (lwip_accept): check addr isn't NULL. If it's valid, do an + assertion check that addrlen isn't NULL. + + 2008-09-30 Jonathan Larmour + * tcp.c: Fix bug #24227, wrong error message in tcp_bind. + + 2008-08-26 Simon Goldschmidt + * inet.h, ip_addr.h: fixed bug #24132: Cross-dependency between ip_addr.h and + inet.h -> moved declaration of struct in_addr from ip_addr.h to inet.h + + 2008-08-14 Simon Goldschmidt + * api_msg.c: fixed bug #23847: do_close_internal references freed memory (when + tcp_close returns != ERR_OK) + + 2008-07-08 Frédéric Bernon + * stats.h: Fix some build bugs introduced with patch #6483 (missing some parameters + in macros, mainly if MEM_STATS=0 and MEMP_STATS=0). + + 2008-06-24 Jonathan Larmour + * tcp_in.c: Fix for bug #23693 as suggested by Art R. Ensure cseg is unused + if tcp_seg_copy fails. + + 2008-06-17 Simon Goldschmidt + * inet_chksum.c: Checked in some ideas of patch #6460 (loop optimizations) + and created defines for swapping bytes and folding u32 to u16. + + 2008-05-30 Kieran Mansley + * tcp_in.c Remove redundant "if" statement, and use real rcv_wnd + rather than rcv_ann_wnd when deciding if packets are in-window. + Contributed by <arasmussen@consultant.datasys.swri.edu> + + 2008-05-30 Kieran Mansley + * mem.h: Fix BUG#23254. Change macro definition of mem_* to allow + passing as function pointers when MEM_LIBC_MALLOC is defined. + + 2008-05-09 Jonathan Larmour + * err.h, err.c, sockets.c: Fix bug #23119: Reorder timeout error code to + stop it being treated as a fatal error. + + 2008-04-15 Simon Goldschmidt + * dhcp.c: fixed bug #22804: dhcp_stop doesn't clear NETIF_FLAG_DHCP + (flag now cleared) + + 2008-03-27 Simon Goldschmidt + * mem.c, tcpip.c, tcpip.h, opt.h: fixed bug #21433 (Calling mem_free/pbuf_free + from interrupt context isn't safe): set LWIP_USE_HEAP_FROM_INTERRUPT to 1 + in lwipopts.h or use pbuf_free_callback(p)/mem_free_callback(m) to free pbufs + or heap memory from interrupt context + + 2008-03-26 Simon Goldschmidt + * tcp_in.c, tcp.c: fixed bug #22249: division by zero could occur if a remote + host sent a zero mss as TCP option. + + +(STABLE-1.3.0) + + ++ New features: + + 2008-03-10 Jonathan Larmour + * inet_chksum.c: Allow choice of one of the sample algorithms to be + made from lwipopts.h. Fix comment on how to override LWIP_CHKSUM. + + 2008-01-22 Frédéric Bernon + * tcp.c, tcp_in.c, tcp.h, opt.h: Rename LWIP_CALCULATE_EFF_SEND_MSS in + TCP_CALCULATE_EFF_SEND_MSS to have coherent TCP options names. + + 2008-01-14 Frédéric Bernon + * rawapi.txt, api_msg.c, tcp.c, tcp_in.c, tcp.h: changes for task #7675 "Enable + to refuse data on a TCP_EVENT_RECV call". Important, behavior changes for the + tcp_recv callback (see rawapi.txt). + + 2008-01-14 Frédéric Bernon, Marc Chaland + * ip.c: Integrate patch #6369" ip_input : checking before realloc". + + 2008-01-12 Frédéric Bernon + * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field + netconn::sem per netconn::op_completed like suggested for the task #7490 + "Add return value to sys_mbox_post". + + 2008-01-12 Frédéric Bernon + * api_msg.c, opt.h: replace DEFAULT_RECVMBOX_SIZE per DEFAULT_TCP_RECVMBOX_SIZE, + DEFAULT_UDP_RECVMBOX_SIZE and DEFAULT_RAW_RECVMBOX_SIZE (to optimize queues + sizes), like suggested for the task #7490 "Add return value to sys_mbox_post". + + 2008-01-10 Frédéric Bernon + * tcpip.h, tcpip.c: add tcpip_callback_with_block function for the task #7490 + "Add return value to sys_mbox_post". tcpip_callback is always defined as + "blocking" ("block" parameter = 1). + + 2008-01-10 Frédéric Bernon + * tcpip.h, tcpip.c, api.h, api_lib.c, api_msg.c, sockets.c: replace the field + netconn::mbox (sys_mbox_t) per netconn::sem (sys_sem_t) for the task #7490 + "Add return value to sys_mbox_post". + + 2008-01-05 Frédéric Bernon + * sys_arch.txt, api.h, api_lib.c, api_msg.h, api_msg.c, tcpip.c, sys.h, opt.h: + Introduce changes for task #7490 "Add return value to sys_mbox_post" with some + modifications in the sys_mbox api: sys_mbox_new take a "size" parameters which + indicate the number of pointers query by the mailbox. There is three defines + in opt.h to indicate sizes for tcpip::mbox, netconn::recvmbox, and for the + netconn::acceptmbox. Port maintainers, you can decide to just add this new + parameter in your implementation, but to ignore it to keep the previous behavior. + The new sys_mbox_trypost function return a value to know if the mailbox is + full or if the message is posted. Take a look to sys_arch.txt for more details. + This new function is used in tcpip_input (so, can be called in an interrupt + context since the function is not blocking), and in recv_udp and recv_raw. + + 2008-01-04 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour + * rawapi.txt, api.h, api_lib.c, api_msg.h, api_msg.c, sockets.c, tcp.h, tcp.c, + tcp_in.c, init.c, opt.h: rename backlog options with TCP_ prefix, limit the + "backlog" parameter in an u8_t, 0 is interpreted as "smallest queue", add + documentation in the rawapi.txt file. + + 2007-12-31 Kieran Mansley (based on patch from Per-Henrik Lundbolm) + * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Add TCP persist timer + + 2007-12-31 Frédéric Bernon, Luca Ceresoli + * autoip.c, etharp.c: ip_addr.h: Integrate patch #6348: "Broadcast ARP packets + in autoip". The change in etharp_raw could be removed, since all calls to + etharp_raw use ethbroadcast for the "ethdst_addr" parameter. But it could be + wrong in the future. + + 2007-12-30 Frédéric Bernon, Tom Evans + * ip.c: Fix bug #21846 "LwIP doesn't appear to perform any IP Source Address + Filtering" reported by Tom Evans. + + 2007-12-21 Frédéric Bernon, Simon Goldschmidt, Jonathan Larmour + * tcp.h, opt.h, api.h, api_msg.h, tcp.c, tcp_in.c, api_lib.c, api_msg.c, + sockets.c, init.c: task #7252: Implement TCP listen backlog: Warning: raw API + applications have to call 'tcp_accepted(pcb)' in their accept callback to + keep accepting new connections. + + 2007-12-13 Frédéric Bernon + * api_msg.c, err.h, err.c, sockets.c, dns.c, dns.h: replace "enum dns_result" + by err_t type. Add a new err_t code "ERR_INPROGRESS". + + 2007-12-12 Frédéric Bernon + * dns.h, dns.c, opt.h: move DNS options to the "right" place. Most visibles + are the one which have ram usage. + + 2007-12-05 Frédéric Bernon + * netdb.c: add a LWIP_DNS_API_HOSTENT_STORAGE option to decide to use a static + set of variables (=0) or a local one (=1). In this last case, your port should + provide a function "struct hostent* sys_thread_hostent( struct hostent* h)" + which have to do a copy of "h" and return a pointer ont the "per-thread" copy. + + 2007-12-03 Simon Goldschmidt + * ip.c: ip_input: check if a packet is for inp first before checking all other + netifs on netif_list (speeds up packet receiving in most cases) + + 2007-11-30 Simon Goldschmidt + * udp.c, raw.c: task #7497: Sort lists (pcb, netif, ...) for faster access + UDP: move a (connected) pcb selected for input to the front of the list of + pcbs so that it is found faster next time. Same for RAW pcbs that have eaten + a packet. + + 2007-11-28 Simon Goldschmidt + * etharp.c, stats.c, stats.h, opt.h: Introduced ETHARP_STATS + + 2007-11-25 Simon Goldschmidt + * dhcp.c: dhcp_unfold_reply() uses pbuf_copy_partial instead of its own copy + algorithm. + + 2007-11-24 Simon Goldschmidt + * netdb.h, netdb.c, sockets.h/.c: Moved lwip_gethostbyname from sockets.c + to the new file netdb.c; included lwip_getaddrinfo. + + 2007-11-21 Simon Goldschmidt + * tcp.h, opt.h, tcp.c, tcp_in.c: implemented calculating the effective send-mss + based on the MTU of the netif used to send. Enabled by default. Disable by + setting LWIP_CALCULATE_EFF_SEND_MSS to 0. This fixes bug #21492. + + 2007-11-19 Frédéric Bernon + * api_msg.c, dns.h, dns.c: Implement DNS_DOES_NAME_CHECK option (check if name + received match the name query), implement DNS_USES_STATIC_BUF (the place where + copy dns payload to parse the response), return an error if there is no place + for a new query, and fix some minor problems. + + 2007-11-16 Simon Goldschmidt + * new files: ipv4/inet.c, ipv4/inet_chksum.c, ipv6/inet6.c + removed files: core/inet.c, core/inet6.c + Moved inet files into ipv4/ipv6 directory; splitted inet.c/inet.h into + inet and chksum part; changed includes in all lwIP files as appropriate + + 2007-11-16 Simon Goldschmidt + * api.h, api_msg.h, api_lib.c, api_msg.c, socket.h, socket.c: Added sequential + dns resolver function for netconn api (netconn_gethostbyname) and socket api + (gethostbyname/gethostbyname_r). + + 2007-11-15 Jim Pettinato, Frédéric Bernon + * opt.h, init.c, tcpip.c, dhcp.c, dns.h, dns.c: add DNS client for simple name + requests with RAW api interface. Initialization is done in lwip_init() with + build time options. DNS timer is added in tcpip_thread context. DHCP can set + DNS server ip addresses when options are received. You need to set LWIP_DNS=1 + in your lwipopts.h file (LWIP_DNS=0 in opt.h). DNS_DEBUG can be set to get + some traces with LWIP_DEBUGF. Sanity check have been added. There is a "todo" + list with points to improve. + + 2007-11-06 Simon Goldschmidt + * opt.h, mib2.c: Patch #6215: added ifAdminStatus write support (if explicitly + enabled by defining SNMP_SAFE_REQUESTS to 0); added code to check link status + for ifOperStatus if LWIP_NETIF_LINK_CALLBACK is defined. + + 2007-11-06 Simon Goldschmidt + * api.h, api_msg.h and dependent files: Task #7410: Removed the need to include + core header files in api.h (ip/tcp/udp/raw.h) to hide the internal + implementation from netconn api applications. + + 2007-11-03 Frédéric Bernon + * api.h, api_lib.c, api_msg.c, sockets.c, opt.h: add SO_RCVBUF option for UDP & + RAW netconn. You need to set LWIP_SO_RCVBUF=1 in your lwipopts.h (it's disabled + by default). Netconn API users can use the netconn_recv_bufsize macro to access + it. This is a first release which have to be improve for TCP. Note it used the + netconn::recv_avail which need to be more "thread-safe" (note there is already + the problem for FIONREAD with lwip_ioctl/ioctlsocket). + + 2007-11-01 Frédéric Bernon, Marc Chaland + * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, tcp.h, tcp_out.c: + Integrate "patch #6250 : MSG_MORE flag for send". MSG_MORE is used at socket api + layer, NETCONN_MORE at netconn api layer, and TCP_WRITE_FLAG_MORE at raw api + layer. This option enable to delayed TCP PUSH flag on multiple "write" calls. + Note that previous "copy" parameter for "write" APIs is now called "apiflags". + + 2007-10-24 Frédéric Bernon + * api.h, api_lib.c, api_msg.c: Add macro API_EVENT in the same spirit than + TCP_EVENT_xxx macros to get a code more readable. It could also help to remove + some code (like we have talk in "patch #5919 : Create compile switch to remove + select code"), but it could be done later. + + 2007-10-08 Simon Goldschmidt + * many files: Changed initialization: many init functions are not needed any + more since we now rely on the compiler initializing global and static + variables to zero! + + 2007-10-06 Simon Goldschmidt + * ip_frag.c, memp.c, mib2.c, ip_frag.h, memp_std.h, opt.h: Changed IP_REASSEMBLY + to enqueue the received pbufs so that multiple packets can be reassembled + simultaneously and no static reassembly buffer is needed. + + 2007-10-05 Simon Goldschmidt + * tcpip.c, etharp.h, etharp.c: moved ethernet_input from tcpip.c to etharp.c so + all netifs (or ports) can use it. + + 2007-10-05 Frédéric Bernon + * netifapi.h, netifapi.c: add function netifapi_netif_set_default. Change the + common function to reduce a little bit the footprint (for all functions using + only the "netif" parameter). + + 2007-10-03 Frédéric Bernon + * netifapi.h, netifapi.c: add functions netifapi_netif_set_up, netifapi_netif_set_down, + netifapi_autoip_start and netifapi_autoip_stop. Use a common function to reduce + a little bit the footprint (for all functions using only the "netif" parameter). + + 2007-09-15 Frédéric Bernon + * udp.h, udp.c, sockets.c: Changes for "#20503 IGMP Improvement". Add IP_MULTICAST_IF + option in socket API, and a new field "multicast_ip" in "struct udp_pcb" (for + netconn and raw API users), only if LWIP_IGMP=1. Add getsockopt processing for + IP_MULTICAST_TTL and IP_MULTICAST_IF. + + 2007-09-10 Frédéric Bernon + * snmp.h, mib2.c: enable to remove SNMP timer (which consumne several cycles + even when it's not necessary). snmp_agent.txt tell to call snmp_inc_sysuptime() + each 10ms (but, it's intrusive if you use sys_timeout feature). Now, you can + decide to call snmp_add_sysuptime(100) each 1000ms (which is bigger "step", but + call to a lower frequency). Or, you can decide to not call snmp_inc_sysuptime() + or snmp_add_sysuptime(), and to define the SNMP_GET_SYSUPTIME(sysuptime) macro. + This one is undefined by default in mib2.c. SNMP_GET_SYSUPTIME is called inside + snmp_get_sysuptime(u32_t *value), and enable to change "sysuptime" value only + when it's queried (any direct call to "sysuptime" is changed by a call to + snmp_get_sysuptime). + + 2007-09-09 Frédéric Bernon, Bill Florac + * igmp.h, igmp.c, netif.h, netif.c, ip.c: To enable to have interfaces with IGMP, + and others without it, there is a new NETIF_FLAG_IGMP flag to set in netif->flags + if you want IGMP on an interface. igmp_stop() is now called inside netif_remove(). + igmp_report_groups() is now called inside netif_set_link_up() (need to have + LWIP_NETIF_LINK_CALLBACK=1) to resend reports once the link is up (avoid to wait + the next query message to receive the matching multicast streams). + + 2007-09-08 Frédéric Bernon + * sockets.c, ip.h, api.h, tcp.h: declare a "struct ip_pcb" which only contains + IP_PCB. Add in the netconn's "pcb" union a "struct ip_pcb *ip;" (no size change). + Use this new field to access to common pcb fields (ttl, tos, so_options, etc...). + Enable to access to these fields with LWIP_TCP=0. + + 2007-09-05 Frédéric Bernon + * udp.c, ipv4/icmp.c, ipv4/ip.c, ipv6/icmp.c, ipv6/ip6.c, ipv4/icmp.h, + ipv6/icmp.h, opt.h: Integrate "task #7272 : LWIP_ICMP option". The new option + LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default). + Be careful, disabling ICMP make your product non-compliant to RFC1122, but + help to reduce footprint, and to reduce "visibility" on the Internet. + + 2007-09-05 Frédéric Bernon, Bill Florac + * opt.h, sys.h, tcpip.c, slipif.c, ppp.c, sys_arch.txt: Change parameters list + for sys_thread_new (see "task #7252 : Create sys_thread_new_ex()"). Two new + parameters have to be provided: a task name, and a task stack size. For this + one, since it's platform dependant, you could define the best one for you in + your lwipopts.h. For port maintainers, you can just add these new parameters + in your sys_arch.c file, and but it's not mandatory, use them in your OS + specific functions. + + 2007-09-05 Frédéric Bernon + * inet.c, autoip.c, msg_in.c, msg_out.c, init.c: Move some build time checkings + inside init.c for task #7142 "Sanity check user-configurable values". + + 2007-09-04 Frédéric Bernon, Bill Florac + * igmp.h, igmp.c, memp_std.h, memp.c, init.c, opt.h: Replace mem_malloc call by + memp_malloc, and use a new MEMP_NUM_IGMP_GROUP option (see opt.h to define the + value). It will avoid potential fragmentation problems, use a counter to know + how many times a group is used on an netif, and free it when all applications + leave it. MEMP_NUM_IGMP_GROUP got 8 as default value (and init.c got a sanity + check if LWIP_IGMP!=0). + + 2007-09-03 Frédéric Bernon + * igmp.h, igmp.c, sockets.c, api_msg.c: Changes for "#20503 IGMP Improvement". + Initialize igmp_mac_filter to NULL in netif_add (this field should be set in + the netif's "init" function). Use the "imr_interface" field (for socket layer) + and/or the "interface" field (for netconn layer), for join/leave operations. + The igmp_join/leavegroup first parameter change from a netif to an ipaddr. + This field could be a netif's ipaddr, or "any" (same meaning than ip_addr_isany). + + 2007-08-30 Frédéric Bernon + * Add netbuf.h, netbuf.c, Change api.h, api_lib.c: #7249 "Split netbuf functions + from api/api_lib". Now netbuf API is independant of netconn, and can be used + with other API (application based on raw API, or future "socket2" API). Ports + maintainers just have to add src/api/netbuf.c in their makefile/projects. + + 2007-08-30 Frédéric Bernon, Jonathan Larmour + * init.c: Add first version of lwip_sanity_check for task #7142 "Sanity check + user-configurable values". + + 2007-08-29 Frédéric Bernon + * igmp.h, igmp.c, tcpip.c, init.c, netif.c: change igmp_init and add igmp_start. + igmp_start is call inside netif_add. Now, igmp initialization is in the same + spirit than the others modules. Modify some IGMP debug traces. + + 2007-08-29 Frédéric Bernon + * Add init.h, init.c, Change opt.h, tcpip.c: Task #7213 "Add a lwip_init function" + Add lwip_init function to regroup all modules initializations, and to provide + a place to add code for task #7142 "Sanity check user-configurable values". + Ports maintainers should remove direct initializations calls from their code, + and add init.c in their makefiles. Note that lwip_init() function is called + inside tcpip_init, but can also be used by raw api users since all calls are + disabled when matching options are disabled. Also note that their is new options + in opt.h, you should configure in your lwipopts.h (they are enabled per default). + + 2007-08-26 Marc Boucher + * api_msg.c: do_close_internal(): Reset the callbacks and arg (conn) to NULL + since they can under certain circumstances be called with an invalid conn + pointer after the connection has been closed (and conn has been freed). + + 2007-08-25 Frédéric Bernon (Artem Migaev's Patch) + * netif.h, netif.c: Integrate "patch #6163 : Function to check if link layer is up". + Add a netif_is_link_up() function if LWIP_NETIF_LINK_CALLBACK option is set. + + 2007-08-22 Frédéric Bernon + * netif.h, netif.c, opt.h: Rename LWIP_NETIF_CALLBACK in LWIP_NETIF_STATUS_CALLBACK + to be coherent with new LWIP_NETIF_LINK_CALLBACK option before next release. + + 2007-08-22 Frédéric Bernon + * tcpip.h, tcpip.c, ethernetif.c, opt.h: remove options ETHARP_TCPIP_INPUT & + ETHARP_TCPIP_ETHINPUT, now, only "ethinput" code is supported, even if the + name is tcpip_input (we keep the name of 1.2.0 function). + + 2007-08-17 Jared Grubb + * memp_std.h, memp.h, memp.c, mem.c, stats.c: (Task #7136) Centralize mempool + settings into new memp_std.h and optional user file lwippools.h. This adds + more dynamic mempools, and allows the user to create an arbitrary number of + mempools for mem_malloc. + + 2007-08-16 Marc Boucher + * api_msg.c: Initialize newconn->state to NETCONN_NONE in accept_function; + otherwise it was left to NETCONN_CLOSE and sent_tcp() could prematurely + close the connection. + + 2007-08-16 Marc Boucher + * sockets.c: lwip_accept(): check netconn_peer() error return. + + 2007-08-16 Marc Boucher + * mem.c, mem.h: Added mem_calloc(). + + 2007-08-16 Marc Boucher + * tcpip.c, tcpip.h memp.c, memp.h: Added distinct memp (MEMP_TCPIP_MSG_INPKT) + for input packets to prevent floods from consuming all of MEMP_TCPIP_MSG + and starving other message types. + Renamed MEMP_TCPIP_MSG to MEMP_TCPIP_MSG_API + + 2007-08-16 Marc Boucher + * pbuf.c, pbuf.h, etharp.c, tcp_in.c, sockets.c: Split pbuf flags in pbuf + type and flgs (later renamed to flags). + Use enum pbuf_flag as pbuf_type. Renumber PBUF_FLAG_*. + Improved lwip_recvfrom(). TCP push now propagated. + + 2007-08-16 Marc Boucher + * ethernetif.c, contrib/ports/various: ethbroadcast now a shared global + provided by etharp. + + 2007-08-16 Marc Boucher + * ppp_oe.c ppp_oe.h, auth.c chap.c fsm.c lcp.c ppp.c ppp.h, + etharp.c ethernetif.c, etharp.h, opt.h tcpip.h, tcpip.c: + Added PPPoE support and various PPP improvements. + + 2007-07-25 Simon Goldschmidt + * api_lib.c, ip_frag.c, pbuf.c, api.h, pbuf.h: Introduced pbuf_copy_partial, + making netbuf_copy_partial use this function. + + 2007-07-25 Simon Goldschmidt + * tcp_in.c: Fix bug #20506: Slow start / initial congestion window starts with + 2 * mss (instead of 1 * mss previously) to comply with some newer RFCs and + other stacks. + + 2007-07-13 Jared Grubb (integrated by Frédéric Bernon) + * opt.h, netif.h, netif.c, ethernetif.c: Add new configuration option to add + a link callback in the netif struct, and functions to handle it. Be carefull + for port maintainers to add the NETIF_FLAG_LINK_UP flag (like in ethernetif.c) + if you want to be sure to be compatible with future changes... + + 2007-06-30 Frédéric Bernon + * sockets.h, sockets.c: Implement MSG_PEEK flag for recv/recvfrom functions. + + 2007-06-21 Simon Goldschmidt + * etharp.h, etharp.c: Combined etharp_request with etharp_raw for both + LWIP_AUTOIP =0 and =1 to remove redundant code. + + 2007-06-21 Simon Goldschmidt + * mem.c, memp.c, mem.h, memp.h, opt.h: task #6863: Introduced the option + MEM_USE_POOLS to use 4 pools with different sized elements instead of a + heap. This both prevents memory fragmentation and gives a higher speed + at the cost of more memory consumption. Turned off by default. + + 2007-06-21 Simon Goldschmidt + * api_lib.c, api_msg.c, api.h, api_msg.h: Converted the length argument of + netconn_write (and therefore also api_msg_msg.msg.w.len) from u16_t into + int to be able to send a bigger buffer than 64K with one time (mainly + used from lwip_send). + + 2007-06-21 Simon Goldschmidt + * tcp.h, api_msg.c: Moved the nagle algorithm from netconn_write/do_write + into a define (tcp_output_nagle) in tcp.h to provide it to raw api users, too. + + 2007-06-21 Simon Goldschmidt + * api.h, api_lib.c, api_msg.c: Fixed bug #20021: Moved sendbuf-processing in + netconn_write from api_lib.c to api_msg.c to also prevent multiple context- + changes on low memory or empty send-buffer. + + 2007-06-18 Simon Goldschmidt + * etharp.c, etharp.h: Changed etharp to use a defined hardware address length + of 6 to avoid loading netif->hwaddr_len every time (since this file is only + used for ethernet and struct eth_addr already had a defined length of 6). + + 2007-06-17 Simon Goldschmidt + * sockets.c, sockets.h: Implemented socket options SO_NO_CHECK for UDP sockets + to disable UDP checksum generation on transmit. + + 2007-06-13 Frédéric Bernon, Simon Goldschmidt + * debug.h, api_msg.c: change LWIP_ERROR to use it to check errors like invalid + pointers or parameters, and let the possibility to redefined it in cc.h. Use + this macro to check "conn" parameter in api_msg.c functions. + + 2007-06-11 Simon Goldschmidt + * sockets.c, sockets.h: Added UDP lite support for sockets + + 2007-06-10 Simon Goldschmidt + * udp.h, opt.h, api_msg.c, ip.c, udp.c: Included switch LWIP_UDPLITE (enabled + by default) to switch off UDP-Lite support if not needed (reduces udp.c code + size) + + 2007-06-09 Dominik Spies (integrated by Frédéric Bernon) + * autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h: + AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and + LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt + (see TODO mark in the source code). + + 2007-06-09 Simon Goldschmidt + * etharp.h, etharp.c, ethernetif.c: Modified order of parameters for + etharp_output() to match netif->output so etharp_output() can be used + directly as netif->output to save one function call. + + 2007-06-08 Simon Goldschmidt + * netif.h, ethernetif.c, slipif.c, loopif.c: Added define + NETIF_INIT_SNMP(netif, type, speed) to initialize per-netif snmp variables, + added initialization of those to ethernetif, slipif and loopif. + + 2007-05-18 Simon Goldschmidt + * opt.h, ip_frag.c, ip_frag.h, ip.c: Added option IP_FRAG_USES_STATIC_BUF + (defaulting to off for now) that can be set to 0 to send fragmented + packets by passing PBUF_REFs down the stack. + + 2007-05-23 Frédéric Bernon + * api_lib.c: Implement SO_RCVTIMEO for accept and recv on TCP + connections, such present in patch #5959. + + 2007-05-23 Frédéric Bernon + * api.h, api_lib.c, api_msg.c, sockets.c: group the different NETCONN_UDPxxx + code in only one part... + + 2007-05-18 Simon Goldschmidt + * opt.h, memp.h, memp.c: Added option MEMP_OVERFLOW_CHECK to check for memp + elements to overflow. This is achieved by adding some bytes before and after + each pool element (increasing their size, of course), filling them with a + prominent value and checking them on freeing the element. + Set it to 2 to also check every element in every pool each time memp_malloc() + or memp_free() is called (slower but more helpful). + + 2007-05-10 Simon Goldschmidt + * opt.h, memp.h, memp.c, pbuf.c (see task #6831): use a new memp pool for + PBUF_POOL pbufs instead of the old pool implementation in pbuf.c to reduce + code size. + + 2007-05-11 Frédéric Bernon + * sockets.c, api_lib.c, api_msg.h, api_msg.c, netifapi.h, netifapi.c, tcpip.c: + Include a function pointer instead of a table index in the message to reduce + footprint. Disable some part of lwip_send and lwip_sendto if some options are + not set (LWIP_TCP, LWIP_UDP, LWIP_RAW). + + 2007-05-10 Simon Goldschmidt + * *.h (except netif/ppp/*.h): Included patch #5448: include '#ifdef __cplusplus + \ extern "C" {' in all header files. Now you can write your application using + the lwIP stack in C++ and simply #include the core files. Note I have left + out the netif/ppp/*h header files for now, since I don't know which files are + included by applications and which are for internal use only. + + 2007-05-09 Simon Goldschmidt + * opt.h, *.c/*.h: Included patch #5920: Create define to override C-library + memcpy. 2 Defines are created: MEMCPY() for normal memcpy, SMEMCPY() for + situations where some compilers might inline the copy and save a function + call. Also replaced all calls to memcpy() with calls to (S)MEMCPY(). + + 2007-05-08 Simon Goldschmidt + * mem.h: If MEM_LIBC_MALLOC==1, allow the defines (e.g. mem_malloc() -> malloc()) + to be overriden in case the C-library malloc implementation is not protected + against concurrent access. + + 2007-05-04 Simon Goldschmidt (Atte Kojo) + * etharp.c: Introduced fast one-entry-cache to speed up ARP lookup when sending + multiple packets to the same host. + + 2007-05-04 Frédéric Bernon, Jonathan Larmour + * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fix bug #19162 "lwip_sento: a possible + to corrupt remote addr/port connection state". Reduce problems "not enought memory" with + netbuf (if we receive lot of datagrams). Improve lwip_sendto (only one exchange between + sockets api and api_msg which run in tcpip_thread context). Add netconn_sento function. + Warning, if you directly access to "fromaddr" & "fromport" field from netbuf struct, + these fields are now renamed "addr" & "port". + + 2007-04-11 Jonathan Larmour + * sys.h, api_lib.c: Provide new sys_mbox_tryfetch function. Require ports to provide new + sys_arch_mbox_tryfetch function to get a message if one is there, otherwise return + with SYS_MBOX_EMPTY. sys_arch_mbox_tryfetch can be implemented as a function-like macro + by the port in sys_arch.h if desired. + + 2007-04-06 Frédéric Bernon, Simon Goldschmidt + * opt.h, tcpip.h, tcpip.c, netifapi.h, netifapi.c: New configuration option LWIP_NETIF_API + allow to use thread-safe functions to add/remove netif in list, and to start/stop dhcp + clients, using new functions from netifapi.h. Disable as default (no port change to do). + + 2007-04-05 Frédéric Bernon + * sockets.c: remplace ENOBUFS errors on alloc_socket by ENFILE to be more BSD compliant. + + 2007-04-04 Simon Goldschmidt + * arch.h, api_msg.c, dhcp.c, msg_in.c, sockets.c: Introduced #define LWIP_UNUSED_ARG(x) + use this for and architecture-independent form to tell the compiler you intentionally + are not using this variable. Can be overriden in cc.h. + + 2007-03-28 Frédéric Bernon + * opt.h, netif.h, dhcp.h, dhcp.c: New configuration option LWIP_NETIF_HOSTNAME allow to + define a hostname in netif struct (this is just a pointer, so, you can use a hardcoded + string, point on one of your's ethernetif field, or alloc a string you will free yourself). + It will be used by DHCP to register a client hostname, but can also be use when you call + snmp_set_sysname. + + 2007-03-28 Frédéric Bernon + * netif.h, netif.c: A new NETIF_FLAG_ETHARP flag is defined in netif.h, to allow to + initialize a network interface's flag with. It tell this interface is an ethernet + device, and we can use ARP with it to do a "gratuitous ARP" (RFC 3220 "IP Mobility + Support for IPv4" section 4.6) when interface is "up" with netif_set_up(). + + 2007-03-26 Frédéric Bernon, Jonathan Larmour + * opt.h, tcpip.c: New configuration option LWIP_ARP allow to disable ARP init at build + time if you only use PPP or SLIP. The default is enable. Note we don't have to call + etharp_init in your port's initilization sequence if you use tcpip.c, because this call + is done in tcpip_init function. + + 2007-03-22 Frédéric Bernon + * stats.h, stats.c, msg_in.c: Stats counters can be change to u32_t if necessary with the + new option LWIP_STATS_LARGE. If you need this option, define LWIP_STATS_LARGE to 1 in + your lwipopts.h. More, unused counters are not defined in the stats structs, and not + display by stats_display(). Note that some options (SYS_STATS and RAW_STATS) are defined + but never used. Fix msg_in.c with the correct #if test for a stat display. + + 2007-03-21 Kieran Mansley + * netif.c, netif.h: Apply patch#4197 with some changes (originator: rireland@hmgsl.com). + Provides callback on netif up/down state change. + + 2007-03-11 Frédéric Bernon, Mace Gael, Steve Reynolds + * sockets.h, sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c, igmp.h, igmp.c, + ip.c, netif.h, tcpip.c, opt.h: + New configuration option LWIP_IGMP to enable IGMP processing. Based on only one + filter per all network interfaces. Declare a new function in netif to enable to + control the MAC filter (to reduce lwIP traffic processing). + + 2007-03-11 Frédéric Bernon + * tcp.h, tcp.c, sockets.c, tcp_out.c, tcp_in.c, opt.h: Keepalive values can + be configured at run time with LWIP_TCP_KEEPALIVE, but don't change this + unless you know what you're doing (default are RFC1122 compliant). Note + that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set in seconds. + + 2007-03-08 Frédéric Bernon + * tcp.h: Keepalive values can be configured at compile time, but don't change + this unless you know what you're doing (default are RFC1122 compliant). + + 2007-03-08 Frédéric Bernon + * sockets.c, api.h, api_lib.c, tcpip.c, sys.h, sys.c, err.c, opt.h: + Implement LWIP_SO_RCVTIMEO configuration option to enable/disable SO_RCVTIMEO + on UDP sockets/netconn. + + 2007-03-08 Simon Goldschmidt + * snmp_msg.h, msg_in.c: SNMP UDP ports can be configured at compile time. + + 2007-03-06 Frédéric Bernon + * api.h, api_lib.c, sockets.h, sockets.c, tcpip.c, sys.h, sys.c, err.h: + Implement SO_RCVTIMEO on UDP sockets/netconn. + + 2007-02-28 Kieran Mansley (based on patch from Simon Goldschmidt) + * api_lib.c, tcpip.c, memp.c, memp.h: make API msg structs allocated + on the stack and remove the API msg type from memp + + 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt) + * sockets.h, sockets.c: Move socket initialization to new + lwip_socket_init() function. + NOTE: this changes the API with ports. Ports will have to be + updated to call lwip_socket_init() now. + + 2007-02-26 Jonathan Larmour (based on patch from Simon Goldschmidt) + * api_lib.c: Use memcpy in netbuf_copy_partial. + + + ++ Bug fixes: + + 2008-03-17 Frédéric Bernon, Ed Kerekes + * igmp.h, igmp.c: Fix bug #22613 "IGMP iphdr problem" (could have + some problems to fill the IP header on some targets, use now the + ip.h macros to do it). + + 2008-03-13 Frédéric Bernon + * sockets.c: Fix bug #22435 "lwip_recvfrom with TCP break;". Using + (lwip_)recvfrom with valid "from" and "fromlen" parameters, on a + TCP connection caused a crash. Note that using (lwip_)recvfrom + like this is a bit slow and that using (lwip)getpeername is the + good lwip way to do it (so, using recv is faster on tcp sockets). + + 2008-03-12 Frédéric Bernon, Jonathan Larmour + * api_msg.c, contrib/apps/ping.c: Fix bug #22530 "api_msg.c's + recv_raw() does not consume data", and the ping sample (with + LWIP_SOCKET=1, the code did the wrong supposition that lwip_recvfrom + returned the IP payload, without the IP header). + + 2008-03-04 Jonathan Larmour + * mem.c, stats.c, mem.h: apply patch #6414 to avoid compiler errors + and/or warnings on some systems where mem_size_t and size_t differ. + * pbuf.c, ppp.c: Fix warnings on some systems with mem_malloc. + + 2008-03-04 Kieran Mansley (contributions by others) + * Numerous small compiler error/warning fixes from contributions to + mailing list after 1.3.0 release candidate made. + + 2008-01-25 Cui hengbin (integrated by Frédéric Bernon) + * dns.c: Fix bug #22108 "DNS problem" caused by unaligned structures. + + 2008-01-15 Kieran Mansley + * tcp_out.c: BUG20511. Modify persist timer to start when we are + prevented from sending by a small send window, not just a zero + send window. + + 2008-01-09 Jonathan Larmour + * opt.h, ip.c: Rename IP_OPTIONS define to IP_OPTIONS_ALLOWED to avoid + conflict with Linux system headers. + + 2008-01-06 Jonathan Larmour + * dhcp.c: fix bug #19927: "DHCP NACK problem" by clearing any existing set IP + address entirely on receiving a DHCPNAK, and restarting discovery. + + 2007-12-21 Simon Goldschmidt + * sys.h, api_lib.c, api_msg.c, sockets.c: fix bug #21698: "netconn->recv_avail + is not protected" by using new macros for interlocked access to modify/test + netconn->recv_avail. + + 2007-12-20 Kieran Mansley (based on patch from Oleg Tyshev) + * tcp_in.c: fix bug# 21535 (nrtx not reset correctly in SYN_SENT state) + + 2007-12-20 Kieran Mansley (based on patch from Per-Henrik Lundbolm) + * tcp.c, tcp_in.c, tcp_out.c, tcp.h: fix bug #20199 (better handling + of silly window avoidance and prevent lwIP from shrinking the window) + + 2007-12-04 Simon Goldschmidt + * tcp.c, tcp_in.c: fix bug #21699 (segment leak in ooseq processing when last + data packet was lost): add assert that all segment lists are empty in + tcp_pcb_remove before setting pcb to CLOSED state; don't directly set CLOSED + state from LAST_ACK in tcp_process + + 2007-12-02 Simon Goldschmidt + * sockets.h: fix bug #21654: exclude definition of struct timeval from #ifndef FD_SET + If including <sys/time.h> for system-struct timeval, LWIP_TIMEVAL_PRIVATE now + has to be set to 0 in lwipopts.h + + 2007-12-02 Simon Goldschmidt + * api_msg.c, api_lib.c: fix bug #21656 (recvmbox problem in netconn API): always + allocate a recvmbox in netconn_new_with_proto_and_callback. For a tcp-listen + netconn, this recvmbox is later freed and a new mbox is allocated for acceptmbox. + This is a fix for thread-safety and allocates all items needed for a netconn + when the netconn is created. + + 2007-11-30 Simon Goldschmidt + * udp.c: first attempt to fix bug #21655 (DHCP doesn't work reliably with multiple + netifs): if LWIP_DHCP is enabled, UDP packets to DHCP_CLIENT_PORT are passed + to netif->dhcp->pcb only (if that exists) and not to any other pcb for the same + port (only solution to let UDP pcbs 'bind' to a netif instead of an IP address) + + 2007-11-27 Simon Goldschmidt + * ip.c: fixed bug #21643 (udp_send/raw_send don't fail if netif is down) by + letting ip_route only use netifs that are up. + + 2007-11-27 Simon Goldschmidt + * err.h, api_lib.c, api_msg.c, sockets.c: Changed error handling: ERR_MEM, ERR_BUF + and ERR_RTE are seen as non-fatal, all other errors are fatal. netconns and + sockets block most operations once they have seen a fatal error. + + 2007-11-27 Simon Goldschmidt + * udp.h, udp.c, dhcp.c: Implemented new function udp_sendto_if which takes the + netif to send as an argument (to be able to send on netifs that are down). + + 2007-11-26 Simon Goldschmidt + * tcp_in.c: Fixed bug #21582: pcb->acked accounting can be wrong when ACKs + arrive out-of-order + + 2007-11-21 Simon Goldschmidt + * tcp.h, tcp_out.c, api_msg.c: Fixed bug #20287: tcp_output_nagle sends too early + Fixed the nagle algorithm; nagle now also works for all raw API applications + and has to be explicitly disabled with 'tcp_pcb->flags |= TF_NODELAY' + + 2007-11-12 Frédéric Bernon + * sockets.c, api.h, api_lib.c, api_msg.h, api_msg.c: Fixed bug #20900. Now, most + of the netconn_peer and netconn_addr processing is done inside tcpip_thread + context in do_getaddr. + + 2007-11-10 Simon Goldschmidt + * etharp.c: Fixed bug: assert fired when MEMP_ARP_QUEUE was empty (which can + happen any time). Now the packet simply isn't enqueued when out of memory. + + 2007-11-01 Simon Goldschmidt + * tcp.c, tcp_in.c: Fixed bug #21494: The send mss (pcb->mss) is set to 536 (or + TCP_MSS if that is smaller) as long as no MSS option is received from the + remote host. + + 2007-11-01 Simon Goldschmidt + * tcp.h, tcp.c, tcp_in.c: Fixed bug #21491: The MSS option sent (with SYN) + is now based on TCP_MSS instead of pcb->mss (on passive open now effectively + sending our configured TCP_MSS instead of the one received). + + 2007-11-01 Simon Goldschmidt + * tcp_in.c: Fixed bug #21181: On active open, the initial congestion window was + calculated based on the configured TCP_MSS, not on the MSS option received + with SYN+ACK. + + 2007-10-09 Simon Goldschmidt + * udp.c, inet.c, inet.h: Fixed UDPLite: send: Checksum was always generated too + short and also was generated wrong if checksum coverage != tot_len; + receive: checksum was calculated wrong if checksum coverage != tot_len + + 2007-10-08 Simon Goldschmidt + * mem.c: lfree was not updated in mem_realloc! + + 2007-10-07 Frédéric Bernon + * sockets.c, api.h, api_lib.c: First step to fix "bug #20900 : Potential + crash error problem with netconn_peer & netconn_addr". VERY IMPORTANT: + this change cause an API breakage for netconn_addr, since a parameter + type change. Any compiler should cause an error without any changes in + yours netconn_peer calls (so, it can't be a "silent change"). It also + reduce a little bit the footprint for socket layer (lwip_getpeername & + lwip_getsockname use now a common lwip_getaddrname function since + netconn_peer & netconn_addr have the same parameters). + + 2007-09-20 Simon Goldschmidt + * tcp.c: Fixed bug #21080 (tcp_bind without check pcbs in TIME_WAIT state) + by checking tcp_tw_pcbs also + + 2007-09-19 Simon Goldschmidt + * icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies) + + 2007-09-15 Mike Kleshov + * mem.c: Fixed bug #21077 (inaccuracy in calculation of lwip_stat.mem.used) + + 2007-09-06 Frédéric Bernon + * several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove + it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which + already include "lwip/arch.h"). Like that, default defines are provided by "lwip/arch.h" + if they are not defined in cc.h, in the same spirit than "lwip/opt.h" for lwipopts.h. + + 2007-08-30 Frédéric Bernon + * igmp.h, igmp.c: Some changes to remove some redundant code, add some traces, + and fix some coding style. + + 2007-08-28 Frédéric Bernon + * tcpip.c: Fix TCPIP_MSG_INPKT processing: now, tcpip_input can be used for any + kind of packets. These packets are considered like Ethernet packets (payload + pointing to ethhdr) if the netif got the NETIF_FLAG_ETHARP flag. Else, packets + are considered like IP packets (payload pointing to iphdr). + + 2007-08-27 Frédéric Bernon + * api.h, api_lib.c, api_msg.c: First fix for "bug #20900 : Potential crash error + problem with netconn_peer & netconn_addr". Introduce NETCONN_LISTEN netconn_state + and remove obsolete ones (NETCONN_RECV & NETCONN_ACCEPT). + + 2007-08-24 Kieran Mansley + * inet.c Modify (acc >> 16) test to ((acc >> 16) != 0) to help buggy + compiler (Paradigm C++) + + 2007-08-09 Frédéric Bernon, Bill Florac + * stats.h, stats.c, igmp.h, igmp.c, opt.h: Fix for bug #20503 : IGMP Improvement. + Introduce IGMP_STATS to centralize statistics management. + + 2007-08-09 Frédéric Bernon, Bill Florac + * udp.c: Fix for bug #20503 : IGMP Improvement. Enable to receive a multicast + packet on a udp pcb binded on an netif's IP address, and not on "any". + + 2007-08-09 Frédéric Bernon, Bill Florac + * igmp.h, igmp.c, ip.c: Fix minor changes from bug #20503 : IGMP Improvement. + This is mainly on using lookup/lookfor, and some coding styles... + + 2007-07-26 Frédéric Bernon (and "thedoctor") + * igmp.c: Fix bug #20595 to accept IGMPv3 "Query" messages. + + 2007-07-25 Simon Goldschmidt + * api_msg.c, tcp.c: Another fix for bug #20021: by not returning an error if + tcp_output fails in tcp_close, the code in do_close_internal gets simpler + (tcp_output is called again later from tcp timers). + + 2007-07-25 Simon Goldschmidt + * ip_frag.c: Fixed bug #20429: use the new pbuf_copy_partial instead of the old + copy_from_pbuf, which illegally modified the given pbuf. + + 2007-07-25 Simon Goldschmidt + * tcp_out.c: tcp_enqueue: pcb->snd_queuelen didn't work for chaine PBUF_RAMs: + changed snd_queuelen++ to snd_queuelen += pbuf_clen(p). + + 2007-07-24 Simon Goldschmidt + * api_msg.c, tcp.c: Fix bug #20480: Check the pcb passed to tcp_listen() for the + correct state (must be CLOSED). + + 2007-07-13 Thomas Taranowski (commited by Jared Grubb) + * memp.c: Fix bug #20478: memp_malloc returned NULL+MEMP_SIZE on failed + allocation. It now returns NULL. + + 2007-07-13 Frédéric Bernon + * api_msg.c: Fix bug #20318: api_msg "recv" callbacks don't call pbuf_free in + all error cases. + + 2007-07-13 Frédéric Bernon + * api_msg.c: Fix bug #20315: possible memory leak problem if tcp_listen failed, + because current code doesn't follow rawapi.txt documentation. + + 2007-07-13 Kieran Mansley + * src/core/tcp_in.c Apply patch#5741 from Oleg Tyshev to fix bug in + out of sequence processing of received packets + + 2007-07-03 Simon Goldschmidt + * nearly-all-files: Added assertions where PBUF_RAM pbufs are used and an + assumption is made that this pbuf is in one piece (i.e. not chained). These + assumptions clash with the possibility of converting to fully pool-based + pbuf implementations, where PBUF_RAM pbufs might be chained. + + 2007-07-03 Simon Goldschmidt + * api.h, api_lib.c, api_msg.c: Final fix for bug #20021 and some other problems + when closing tcp netconns: removed conn->sem, less context switches when + closing, both netconn_close and netconn_delete should safely close tcp + connections. + + 2007-07-02 Simon Goldschmidt + * ipv4/ip.h, ipv6/ip.h, opt.h, netif.h, etharp.h, ipv4/ip.c, netif.c, raw.c, + tcp_out.c, udp.c, etharp.c: Added option LWIP_NETIF_HWADDRHINT (default=off) + to cache ARP table indices with each pcb instead of single-entry cache for + the complete stack. + + 2007-07-02 Simon Goldschmidt + * tcp.h, tcp.c, tcp_in.c, tcp_out.c: Added some ASSERTS and casts to prevent + warnings when assigning to smaller types. + + 2007-06-28 Simon Goldschmidt + * tcp_out.c: Added check to prevent tcp_pcb->snd_queuelen from overflowing. + + 2007-06-28 Simon Goldschmidt + * tcp.h: Fixed bug #20287: Fixed nagle algorithm (sending was done too early if + a segment contained chained pbufs) + + 2007-06-28 Frédéric Bernon + * autoip.c: replace most of rand() calls by a macro LWIP_AUTOIP_RAND which compute + a "pseudo-random" value based on netif's MAC and some autoip fields. It's always + possible to define this macro in your own lwipopts.h to always use C library's + rand(). Note that autoip_create_rand_addr doesn't use this macro. + + 2007-06-28 Frédéric Bernon + * netifapi.h, netifapi.c, tcpip.h, tcpip.c: Update code to handle the option + LWIP_TCPIP_CORE_LOCKING, and do some changes to be coherent with last modifications + in api_lib/api_msg (use pointers and not type with table, etc...) + + 2007-06-26 Simon Goldschmidt + * udp.h: Fixed bug #20259: struct udp_hdr was lacking the packin defines. + + 2007-06-25 Simon Goldschmidt + * udp.c: Fixed bug #20253: icmp_dest_unreach was called with a wrong p->payload + for udp packets with no matching pcb. + + 2007-06-25 Simon Goldschmidt + * udp.c: Fixed bug #20220: UDP PCB search in udp_input(): a non-local match + could get udp input packets if the remote side matched. + + 2007-06-13 Simon Goldschmidt + * netif.c: Fixed bug #20180 (TCP pcbs listening on IP_ADDR_ANY could get + changed in netif_set_ipaddr if previous netif->ip_addr.addr was 0. + + 2007-06-13 Simon Goldschmidt + * api_msg.c: pcb_new sets conn->err if protocol is not implemented + -> netconn_new_..() does not allocate a new connection for unsupported + protocols. + + 2007-06-13 Frédéric Bernon, Simon Goldschmidt + * api_lib.c: change return expression in netconn_addr and netconn_peer, because + conn->err was reset to ERR_OK without any reasons (and error was lost)... + + 2007-06-13 Frédéric Bernon, Matthias Weisser + * opt.h, mem.h, mem.c, memp.c, pbuf.c, ip_frag.c, vj.c: Fix bug #20162. Rename + MEM_ALIGN in LWIP_MEM_ALIGN and MEM_ALIGN_SIZE in LWIP_MEM_ALIGN_SIZE to avoid + some macro names collision with some OS macros. + + 2007-06-11 Simon Goldschmidt + * udp.c: UDP Lite: corrected the use of chksum_len (based on RFC3828: if it's 0, + create checksum over the complete packet. On RX, if it's < 8 (and not 0), + discard the packet. Also removed the duplicate 'udphdr->chksum = 0' for both + UDP & UDP Lite. + + 2007-06-11 Srinivas Gollakota & Oleg Tyshev + * tcp_out.c: Fix for bug #20075 : "A problem with keep-alive timer and TCP flags" + where TCP flags wasn't initialized in tcp_keepalive. + + 2007-06-03 Simon Goldschmidt + * udp.c: udp_input(): Input pbuf was not freed if pcb had no recv function + registered, p->payload was modified without modifying p->len if sending + icmp_dest_unreach() (had no negative effect but was definitively wrong). + + 2007-06-03 Simon Goldschmidt + * icmp.c: Corrected bug #19937: For responding to an icmp echo request, icmp + re-used the input pbuf even if that didn't have enough space to include the + link headers. Now the space is tested and a new pbuf is allocated for the + echo response packet if the echo request pbuf isn't big enough. + + 2007-06-01 Simon Goldschmidt + * sockets.c: Checked in patch #5914: Moved sockopt processing into tcpip_thread. + + 2007-05-23 Frédéric Bernon + * api_lib.c, sockets.c: Fixed bug #5958 for netconn_listen (acceptmbox only + allocated by do_listen if success) and netconn_accept errors handling. In + most of api_lib functions, we replace some errors checkings like "if (conn==NULL)" + by ASSERT, except for netconn_delete. + + 2007-05-23 Frédéric Bernon + * api_lib.c: Fixed bug #5957 "Safe-thread problem inside netconn_recv" to return + an error code if it's impossible to fetch a pbuf on a TCP connection (and not + directly close the recvmbox). + + 2007-05-22 Simon Goldschmidt + * tcp.c: Fixed bug #1895 (tcp_bind not correct) by introducing a list of + bound but unconnected (and non-listening) tcp_pcbs. + + 2007-05-22 Frédéric Bernon + * sys.h, sys.c, api_lib.c, tcpip.c: remove sys_mbox_fetch_timeout() (was only + used for LWIP_SO_RCVTIMEO option) and use sys_arch_mbox_fetch() instead of + sys_mbox_fetch() in api files. Now, users SHOULD NOT use internal lwIP features + like "sys_timeout" in their application threads. + + 2007-05-22 Frédéric Bernon + * api.h, api_lib.c, api_msg.h, api_msg.c: change the struct api_msg_msg to see + which parameters are used by which do_xxx function, and to avoid "misusing" + parameters (patch #5938). + + 2007-05-22 Simon Goldschmidt + * api_lib.c, api_msg.c, raw.c, api.h, api_msg.h, raw.h: Included patch #5938: + changed raw_pcb.protocol from u16_t to u8_t since for IPv4 and IPv6, proto + is only 8 bits wide. This affects the api, as there, the protocol was + u16_t, too. + + 2007-05-18 Simon Goldschmidt + * memp.c: addition to patch #5913: smaller pointer was returned but + memp_memory was the same size -> did not save memory. + + 2007-05-16 Simon Goldschmidt + * loopif.c, slipif.c: Fix bug #19729: free pbuf if netif->input() returns + != ERR_OK. + + 2007-05-16 Simon Goldschmidt + * api_msg.c, udp.c: If a udp_pcb has a local_ip set, check if it is the same + as the one of the netif used for sending to prevent sending from old + addresses after a netif address gets changed (partly fixes bug #3168). + + 2007-05-16 Frédéric Bernon + * tcpip.c, igmp.h, igmp.c: Fixed bug "#19800 : IGMP: igmp_tick() will not work + with NO_SYS=1". Note that igmp_init is always in tcpip_thread (and not in + tcpip_init) because we have to be sure that network interfaces are already + added (mac filter is updated only in igmp_init for the moment). + + 2007-05-16 Simon Goldschmidt + * mem.c, memp.c: Removed semaphores from memp, changed sys_sem_wait calls + into sys_arch_sem_wait calls to prevent timers from running while waiting + for the heap. This fixes bug #19167. + + 2007-05-13 Simon Goldschmidt + * tcp.h, sockets.h, sockets.c: Fixed bug from patch #5865 by moving the defines + for socket options (lwip_set/-getsockopt) used with level IPPROTO_TCP from + tcp.h to sockets.h. + + 2007-05-07 Simon Goldschmidt + * mem.c: Another attempt to fix bug #17922. + + 2007-05-04 Simon Goldschmidt + * pbuf.c, pbuf.h, etharp.c: Further update to ARP queueing: Changed pbuf_copy() + implementation so that it can be reused (don't allocate the target + pbuf inside pbuf_copy()). + + 2007-05-04 Simon Goldschmidt + * memp.c: checked in patch #5913: in memp_malloc() we can return memp as mem + to save a little RAM (next pointer of memp is not used while not in pool). + + 2007-05-03 "maq" + * sockets.c: Fix ioctl FIONREAD when some data remains from last recv. + (patch #3574). + + 2007-04-23 Simon Goldschmidt + * loopif.c, loopif.h, opt.h, src/netif/FILES: fix bug #2595: "loopif results + in NULL reference for incoming TCP packets". Loopif has to be configured + (using LWIP_LOOPIF_MULTITHREADING) to directly call netif->input() + (multithreading environments, e.g. netif->input() = tcpip_input()) or + putting packets on a list that is fed to the stack by calling loopif_poll() + (single-thread / NO_SYS / polling environment where e.g. + netif->input() = ip_input). + + 2007-04-17 Jonathan Larmour + * pbuf.c: Use s32_t in pbuf_realloc(), as an s16_t can't reliably hold + the difference between two u16_t's. + * sockets.h: FD_SETSIZE needs to match number of sockets, which is + MEMP_NUM_NETCONN in sockets.c right now. + + 2007-04-12 Jonathan Larmour + * icmp.c: Reset IP header TTL in ICMP ECHO responses (bug #19580). + + 2007-04-12 Kieran Mansley + * tcp.c, tcp_in.c, tcp_out.c, tcp.h: Modify way the retransmission + timer is reset to fix bug#19434, with help from Oleg Tyshev. + + 2007-04-11 Simon Goldschmidt + * etharp.c, pbuf.c, pbuf.h: 3rd fix for bug #11400 (arp-queuing): More pbufs than + previously thought need to be copied (everything but PBUF_ROM!). Cleaned up + pbuf.c: removed functions no needed any more (by etharp). + + 2007-04-11 Kieran Mansley + * inet.c, ip_addr.h, sockets.h, sys.h, tcp.h: Apply patch #5745: Fix + "Constant is long" warnings with 16bit compilers. Contributed by + avatar@mmlab.cse.yzu.edu.tw + + 2007-04-05 Frédéric Bernon, Jonathan Larmour + * api_msg.c: Fix bug #16830: "err_tcp() posts to connection mailbox when no pend on + the mailbox is active". Now, the post is only done during a connect, and do_send, + do_write and do_join_leave_group don't do anything if a previous error was signaled. + + 2007-04-03 Frédéric Bernon + * ip.c: Don't set the IP_DF ("Don't fragment") flag in the IP header in IP output + packets. See patch #5834. + + 2007-03-30 Frédéric Bernon + * api_msg.c: add a "pcb_new" helper function to avoid redundant code, and to add + missing pcb allocations checking (in do_bind, and for each raw_new). Fix style. + + 2007-03-30 Frédéric Bernon + * most of files: prefix all debug.h define with "LWIP_" to avoid any conflict with + others environment defines (these were too "generic"). + + 2007-03-28 Frédéric Bernon + * api.h, api_lib.c, sockets.c: netbuf_ref doesn't check its internal pbuf_alloc call + result and can cause a crash. lwip_send now check netbuf_ref result. + + 2007-03-28 Simon Goldschmidt + * sockets.c Remove "#include <errno.h>" from sockets.c to avoid multiple + definition of macros (in errno.h and lwip/arch.h) if LWIP_PROVIDE_ERRNO is + defined. This is the way it should have been already (looking at + doc/sys_arch.txt) + + 2007-03-28 Kieran Mansley + * opt.h Change default PBUF_POOL_BUFSIZE (again) to accomodate default MSS + + IP and TCP headers *and* physical link headers + + 2007-03-26 Frédéric Bernon (based on patch from Dmitry Potapov) + * api_lib.c: patch for netconn_write(), fixes a possible race condition which cause + to send some garbage. It is not a definitive solution, but the patch does solve + the problem for most cases. + + 2007-03-22 Frédéric Bernon + * api_msg.h, api_msg.c: Remove obsolete API_MSG_ACCEPT and do_accept (never used). + + 2007-03-22 Frédéric Bernon + * api_lib.c: somes resources couldn't be freed if there was errors during + netconn_new_with_proto_and_callback. + + 2007-03-22 Frédéric Bernon + * ethernetif.c: update netif->input calls to check return value. In older ports, + it's a good idea to upgrade them, even if before, there could be another problem + (access to an uninitialized mailbox). + + 2007-03-21 Simon Goldschmidt + * sockets.c: fixed bug #5067 (essentialy a signed/unsigned warning fixed + by casting to unsigned). + + 2007-03-21 Frédéric Bernon + * api_lib.c, api_msg.c, tcpip.c: integrate sys_mbox_fetch(conn->mbox, NULL) calls from + api_lib.c to tcpip.c's tcpip_apimsg(). Now, use a local variable and not a + dynamic one from memp to send tcpip_msg to tcpip_thread in a synchrone call. + Free tcpip_msg from tcpip_apimsg is not done in tcpip_thread. This give a + faster and more reliable communication between api_lib and tcpip. + + 2007-03-21 Frédéric Bernon + * opt.h: Add LWIP_NETIF_CALLBACK (to avoid compiler warning) and set it to 0. + + 2007-03-21 Frédéric Bernon + * api_msg.c, igmp.c, igmp.h: Fix C++ style comments + + 2007-03-21 Kieran Mansley + * opt.h Change default PBUF_POOL_BUFSIZE to accomodate default MSS + + IP and TCP headers + + 2007-03-21 Kieran Mansley + * Fix all uses of pbuf_header to check the return value. In some + cases just assert if it fails as I'm not sure how to fix them, but + this is no worse than before when they would carry on regardless + of the failure. + + 2007-03-21 Kieran Mansley + * sockets.c, igmp.c, igmp.h, memp.h: Fix C++ style comments and + comment out missing header include in icmp.c + + 2007-03-20 Frédéric Bernon + * memp.h, stats.c: Fix stats_display function where memp_names table wasn't + synchronized with memp.h. + + 2007-03-20 Frédéric Bernon + * tcpip.c: Initialize tcpip's mbox, and verify if initialized in tcpip_input, + tcpip_ethinput, tcpip_callback, tcpip_apimsg, to fix a init problem with + network interfaces. Also fix a compiler warning. + + 2007-03-20 Kieran Mansley + * udp.c: Only try and use pbuf_header() to make space for headers if + not a ROM or REF pbuf. + + 2007-03-19 Frédéric Bernon + * api_msg.h, api_msg.c, tcpip.h, tcpip.c: Add return types to tcpip_apimsg() + and api_msg_post(). + + 2007-03-19 Frédéric Bernon + * Remove unimplemented "memp_realloc" function from memp.h. + + 2007-03-11 Simon Goldschmidt + * pbuf.c: checked in patch #5796: pbuf_alloc: len field claculation caused + memory corruption. + + 2007-03-11 Simon Goldschmidt (based on patch from Dmitry Potapov) + * api_lib.c, sockets.c, api.h, api_msg.h, sockets.h: Fixed bug #19251 + (missing `const' qualifier in socket functions), to get more compatible to + standard POSIX sockets. + + 2007-03-11 Frédéric Bernon (based on patch from Dmitry Potapov) + * sockets.c: Add asserts inside bind, connect and sendto to check input + parameters. Remove excessive set_errno() calls after get_socket(), because + errno is set inside of get_socket(). Move last sock_set_errno() inside + lwip_close. + + 2007-03-09 Simon Goldschmidt + * memp.c: Fixed bug #11400: New etharp queueing introduced bug: memp_memory + was allocated too small. + + 2007-03-06 Simon Goldschmidt + * tcpip.c: Initialize dhcp timers in tcpip_thread (if LWIP_DHCP) to protect + the stack from concurrent access. + + 2007-03-06 Frédéric Bernon, Dmitry Potapov + * tcpip.c, ip_frag.c, ethernetif.c: Fix some build problems, and a redundancy + call to "lwip_stats.link.recv++;" in low_level_input() & ethernetif_input(). + + 2007-03-06 Simon Goldschmidt + * ip_frag.c, ip_frag.h: Reduce code size: don't include code in those files + if IP_FRAG == 0 and IP_REASSEMBLY == 0 + + 2007-03-06 Frédéric Bernon, Simon Goldschmidt + * opt.h, ip_frag.h, tcpip.h, tcpip.c, ethernetif.c: add new configuration + option named ETHARP_TCPIP_ETHINPUT, which enable the new tcpip_ethinput. + Allow to do ARP processing for incoming packets inside tcpip_thread + (protecting ARP layer against concurrent access). You can also disable + old code using tcp_input with new define ETHARP_TCPIP_INPUT set to 0. + Older ports have to use tcpip_ethinput. + + 2007-03-06 Simon Goldschmidt (based on patch from Dmitry Potapov) + * err.h, err.c: fixed compiler warning "initialization dircards qualifiers + from pointer target type" + + 2007-03-05 Frédéric Bernon + * opt.h, sockets.h: add new configuration options (LWIP_POSIX_SOCKETS_IO_NAMES, + ETHARP_TRUST_IP_MAC, review SO_REUSE) + + 2007-03-04 Frédéric Bernon + * api_msg.c: Remove some compiler warnings : parameter "pcb" was never + referenced. + + 2007-03-04 Frédéric Bernon + * api_lib.c: Fix "[patch #5764] api_lib.c cleanup: after patch #5687" (from + Dmitry Potapov). + The api_msg struct stay on the stack (not moved to netconn struct). + + 2007-03-04 Simon Goldschmidt (based on patch from Dmitry Potapov) + * pbuf.c: Fix BUG#19168 - pbuf_free can cause deadlock (if + SYS_LIGHTWEIGHT_PROT=1 & freeing PBUF_RAM when mem_sem is not available) + Also fixed cast warning in pbuf_alloc() + + 2007-03-04 Simon Goldschmidt + * etharp.c, etharp.h, memp.c, memp.h, opt.h: Fix BUG#11400 - don't corrupt + existing pbuf chain when enqueuing multiple pbufs to a pending ARP request + + 2007-03-03 Frédéric Bernon + * udp.c: remove obsolete line "static struct udp_pcb *pcb_cache = NULL;" + It is static, and never used in udp.c except udp_init(). + + 2007-03-02 Simon Goldschmidt + * tcpip.c: Moved call to ip_init(), udp_init() and tcp_init() from + tcpip_thread() to tcpip_init(). This way, raw API connections can be + initialized before tcpip_thread is running (e.g. before OS is started) + + 2007-03-02 Frédéric Bernon + * rawapi.txt: Fix documentation mismatch with etharp.h about etharp_tmr's call + interval. + + 2007-02-28 Kieran Mansley + * pbuf.c: Fix BUG#17645 - ensure pbuf payload pointer is not moved + outside the region of the pbuf by pbuf_header() + + 2007-02-28 Kieran Mansley + * sockets.c: Fix BUG#19161 - ensure milliseconds timeout is non-zero + when supplied timeout is also non-zero + +(STABLE-1.2.0) + + 2006-12-05 Leon Woestenberg + * CHANGELOG: Mention STABLE-1.2.0 release. + + ++ New features: + + 2006-12-01 Christiaan Simons + * mem.h, opt.h: Added MEM_LIBC_MALLOC option. + Note this is a workaround. Currently I have no other options left. + + 2006-10-26 Christiaan Simons (accepted patch by Jonathan Larmour) + * ipv4/ip_frag.c: rename MAX_MTU to IP_FRAG_MAX_MTU and move define + to include/lwip/opt.h. + * ipv4/lwip/ip_frag.h: Remove unused IP_REASS_INTERVAL. + Move IP_REASS_MAXAGE and IP_REASS_BUFSIZE to include/lwip/opt.h. + * opt.h: Add above new options. + + 2006-08-18 Christiaan Simons + * tcp_{in,out}.c: added SNMP counters. + * ipv4/ip.c: added SNMP counters. + * ipv4/ip_frag.c: added SNMP counters. + + 2006-08-08 Christiaan Simons + * etharp.{c,h}: added etharp_find_addr() to read + (stable) ethernet/IP address pair from ARP table + + 2006-07-14 Christiaan Simons + * mib_structs.c: added + * include/lwip/snmp_structs.h: added + * netif.{c,h}, netif/ethernetif.c: added SNMP statistics to netif struct + + 2006-07-06 Christiaan Simons + * snmp/asn1_{enc,dec}.c added + * snmp/mib2.c added + * snmp/msg_{in,out}.c added + * include/lwip/snmp_asn1.h added + * include/lwip/snmp_msg.h added + * doc/snmp_agent.txt added + + 2006-03-29 Christiaan Simons + * inet.c, inet.h: Added platform byteswap support. + Added LWIP_PLATFORM_BYTESWAP define (defaults to 0) and + optional LWIP_PLATFORM_HTONS(), LWIP_PLATFORM_HTONL() macros. + + ++ Bug fixes: + + 2006-11-30 Christiaan Simons + * dhcp.c: Fixed false triggers of request_timeout. + + 2006-11-28 Christiaan Simons + * netif.c: In netif_add() fixed missing clear of ip_addr, netmask, gw and flags. + + 2006-10-11 Christiaan Simons + * api_lib.c etharp.c, ip.c, memp.c, stats.c, sys.{c,h} tcp.h: + Partially accepted patch #5449 for ANSI C compatibility / build fixes. + * ipv4/lwip/ip.h ipv6/lwip/ip.h: Corrected UDP-Lite protocol + identifier from 170 to 136 (bug #17574). + + 2006-10-10 Christiaan Simons + * api_msg.c: Fixed Nagle algorithm as reported by Bob Grice. + + 2006-08-17 Christiaan Simons + * udp.c: Fixed bug #17200, added check for broadcast + destinations for PCBs bound to a unicast address. + + 2006-08-07 Christiaan Simons + * api_msg.c: Flushing TCP output in do_close() (bug #15926). + + 2006-06-27 Christiaan Simons + * api_msg.c: Applied patch for cold case (bug #11135). + In accept_function() ensure newconn->callback is always initialized. + + 2006-06-15 Christiaan Simons + * mem.h: added MEM_SIZE_F alias to fix an ancient cold case (bug #1748), + facilitate printing of mem_size_t and u16_t statistics. + + 2006-06-14 Christiaan Simons + * api_msg.c: Applied patch #5146 to handle allocation failures + in accept() by Kevin Lawson. + + 2006-05-26 Christiaan Simons + * api_lib.c: Removed conn->sem creation and destruction + from netconn_write() and added sys_sem_new to netconn_new_*. + +(STABLE-1_1_1) + + 2006-03-03 Christiaan Simons + * ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap + access and added pbuf_alloc() return value checks. + + 2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net> + * tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is + now handled by the checksum routine properly. + + 2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net> + * pbuf.c: Fix alignment; pbuf_init() would not work unless + pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.) + + 2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net> + * tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch + submitted by Mitrani Hiroshi. + + 2005-12-15 Christiaan Simons + * inet.c: Disabled the added summing routine to preserve code space. + + 2005-12-14 Leon Woestenberg <leon.woestenberg@gmx.net> + * tcp_in.c: Duplicate FIN ACK race condition fix by Kelvin Lawson. + Added Curt McDowell's optimized checksumming routine for future + inclusion. Need to create test case for unaliged, aligned, odd, + even length combination of cases on various endianess machines. + + 2005-12-09 Christiaan Simons + * inet.c: Rewrote standard checksum routine in proper portable C. + + 2005-11-25 Christiaan Simons + * udp.c tcp.c: Removed SO_REUSE hack. Should reside in socket code only. + * *.c: introduced cc.h LWIP_DEBUG formatters matching the u16_t, s16_t, + u32_t, s32_t typedefs. This solves most debug word-length assumes. + + 2005-07-17 Leon Woestenberg <leon.woestenberg@gmx.net> + * inet.c: Fixed unaligned 16-bit access in the standard checksum + routine by Peter Jolasson. + * slipif.c: Fixed implementation assumption of single-pbuf datagrams. + + 2005-02-04 Leon Woestenberg <leon.woestenberg@gmx.net> + * tcp_out.c: Fixed uninitialized 'queue' referenced in memerr branch. + * tcp_{out|in}.c: Applied patch fixing unaligned access. + + 2005-01-04 Leon Woestenberg <leon.woestenberg@gmx.net> + * pbuf.c: Fixed missing semicolon after LWIP_DEBUG statement. + + 2005-01-03 Leon Woestenberg <leon.woestenberg@gmx.net> + * udp.c: UDP pcb->recv() was called even when it was NULL. + +(STABLE-1_1_0) + + 2004-12-28 Leon Woestenberg <leon.woestenberg@gmx.net> + * etharp.*: Disabled multiple packets on the ARP queue. + This clashes with TCP queueing. + + 2004-11-28 Leon Woestenberg <leon.woestenberg@gmx.net> + * etharp.*: Fixed race condition from ARP request to ARP timeout. + Halved the ARP period, doubled the period counts. + ETHARP_MAX_PENDING now should be at least 2. This prevents + the counter from reaching 0 right away (which would allow + too little time for ARP responses to be received). + + 2004-11-25 Leon Woestenberg <leon.woestenberg@gmx.net> + * dhcp.c: Decline messages were not multicast but unicast. + * etharp.c: ETHARP_CREATE is renamed to ETHARP_TRY_HARD. + Do not try hard to insert arbitrary packet's source address, + etharp_ip_input() now calls etharp_update() without ETHARP_TRY_HARD. + etharp_query() now always DOES call ETHARP_TRY_HARD so that users + querying an address will see it appear in the cache (DHCP could + suffer from this when a server invalidly gave an in-use address.) + * ipv4/ip_addr.h: Renamed ip_addr_maskcmp() to _netcmp() as we are + comparing network addresses (identifiers), not the network masks + themselves. + * ipv4/ip_addr.c: ip_addr_isbroadcast() now checks that the given + IP address actually belongs to the network of the given interface. + + 2004-11-24 Kieran Mansley <kjm25@cam.ac.uk> + * tcp.c: Increment pcb->snd_buf when ACK is received in SYN_SENT state. + +(STABLE-1_1_0-RC1) + + 2004-10-16 Kieran Mansley <kjm25@cam.ac.uk> + * tcp.c: Add code to tcp_recved() to send an ACK (window update) immediately, + even if one is already pending, if the rcv_wnd is above a threshold + (currently TCP_WND/2). This avoids waiting for a timer to expire to send a + delayed ACK in order to open the window if the stack is only receiving data. + + 2004-09-12 Kieran Mansley <kjm25@cam.ac.uk> + * tcp*.*: Retransmit time-out handling improvement by Sam Jansen. + + 2004-08-20 Tony Mountifield <tony@softins.co.uk> + * etharp.c: Make sure the first pbuf queued on an ARP entry + is properly ref counted. + + 2004-07-27 Tony Mountifield <tony@softins.co.uk> + * debug.h: Added (int) cast in LWIP_DEBUGF() to avoid compiler + warnings about comparison. + * pbuf.c: Stopped compiler complaining of empty if statement + when LWIP_DEBUGF() empty. Closed an unclosed comment. + * tcp.c: Stopped compiler complaining of empty if statement + when LWIP_DEBUGF() empty. + * ip.h Corrected IPH_TOS() macro: returns a byte, so doesn't need htons(). + * inet.c: Added a couple of casts to quiet the compiler. + No need to test isascii(c) before isdigit(c) or isxdigit(c). + + 2004-07-22 Tony Mountifield <tony@softins.co.uk> + * inet.c: Made data types consistent in inet_ntoa(). + Added casts for return values of checksum routines, to pacify compiler. + * ip_frag.c, tcp_out.c, sockets.c, pbuf.c + Small corrections to some debugging statements, to pacify compiler. + + 2004-07-21 Tony Mountifield <tony@softins.co.uk> + * etharp.c: Removed spurious semicolon and added missing end-of-comment. + * ethernetif.c Updated low_level_output() to match prototype for + netif->linkoutput and changed low_level_input() similarly for consistency. + * api_msg.c: Changed recv_raw() from int to u8_t, to match prototype + of raw_recv() in raw.h and so avoid compiler error. + * sockets.c: Added trivial (int) cast to keep compiler happier. + * ip.c, netif.c Changed debug statements to use the tidier ip4_addrN() macros. + +(STABLE-1_0_0) + + ++ Changes: + + 2004-07-05 Leon Woestenberg <leon.woestenberg@gmx.net> + * sockets.*: Restructured LWIP_PRIVATE_TIMEVAL. Make sure + your cc.h file defines this either 1 or 0. If non-defined, + defaults to 1. + * .c: Added <string.h> and <errno.h> includes where used. + * etharp.c: Made some array indices unsigned. + + 2004-06-27 Leon Woestenberg <leon.woestenberg@gmx.net> + * netif.*: Added netif_set_up()/down(). + * dhcp.c: Changes to restart program flow. + + 2004-05-07 Leon Woestenberg <leon.woestenberg@gmx.net> + * etharp.c: In find_entry(), instead of a list traversal per candidate, do a + single-pass lookup for different candidates. Should exploit locality. + + 2004-04-29 Leon Woestenberg <leon.woestenberg@gmx.net> + * tcp*.c: Cleaned up source comment documentation for Doxygen processing. + * opt.h: ETHARP_ALWAYS_INSERT option removed to comply with ARP RFC. + * etharp.c: update_arp_entry() only adds new ARP entries when adviced to by + the caller. This deprecates the ETHARP_ALWAYS_INSERT overrule option. + + ++ Bug fixes: + + 2004-04-27 Leon Woestenberg <leon.woestenberg@gmx.net> + * etharp.c: Applied patch of bug #8708 by Toni Mountifield with a solution + suggested by Timmy Brolin. Fix for 32-bit processors that cannot access + non-aligned 32-bit words, such as soms 32-bit TCP/IP header fields. Fix + is to prefix the 14-bit Ethernet headers with two padding bytes. + + 2004-04-23 Leon Woestenberg <leon.woestenberg@gmx.net> + * ip_addr.c: Fix in the ip_addr_isbroadcast() check. + * etharp.c: Fixed the case where the packet that initiates the ARP request + is not queued, and gets lost. Fixed the case where the packets destination + address is already known; we now always queue the packet and perform an ARP + request. + +(STABLE-0_7_0) + + ++ Bug fixes: + + * Fixed TCP bug for SYN_SENT to ESTABLISHED state transition. + * Fixed TCP bug in dequeueing of FIN from out of order segment queue. + * Fixed two possible NULL references in rare cases. + +(STABLE-0_6_6) + + ++ Bug fixes: + + * Fixed DHCP which did not include the IP address in DECLINE messages. + + ++ Changes: + + * etharp.c has been hauled over a bit. + +(STABLE-0_6_5) + + ++ Bug fixes: + + * Fixed TCP bug induced by bad window resizing with unidirectional TCP traffic. + * Packets sent from ARP queue had invalid source hardware address. + + ++ Changes: + + * Pass-by ARP requests do now update the cache. + + ++ New features: + + * No longer dependent on ctype.h. + * New socket options. + * Raw IP pcb support. + +(STABLE-0_6_4) + + ++ Bug fixes: + + * Some debug formatters and casts fixed. + * Numereous fixes in PPP. + + ++ Changes: + + * DEBUGF now is LWIP_DEBUGF + * pbuf_dechain() has been re-enabled. + * Mentioned the changed use of CVS branches in README. + +(STABLE-0_6_3) + + ++ Bug fixes: + + * Fixed pool pbuf memory leak in pbuf_alloc(). + Occured if not enough PBUF_POOL pbufs for a packet pbuf chain. + Reported by Savin Zlobec. + + * PBUF_POOL chains had their tot_len field not set for non-first + pbufs. Fixed in pbuf_alloc(). + + ++ New features: + + * Added PPP stack contributed by Marc Boucher + + ++ Changes: + + * Now drops short packets for ICMP/UDP/TCP protocols. More robust. + + * ARP queueuing now queues the latest packet instead of the first. + This is the RFC recommended behaviour, but can be overridden in + lwipopts.h. + +(0.6.2) + + ++ Bugfixes: + + * TCP has been fixed to deal with the new use of the pbuf->ref + counter. + + * DHCP dhcp_inform() crash bug fixed. + + ++ Changes: + + * Removed pbuf_pool_free_cache and pbuf_pool_alloc_cache. Also removed + pbuf_refresh(). This has sped up pbuf pool operations considerably. + Implemented by David Haas. + +(0.6.1) + + ++ New features: + + * The packet buffer implementation has been enhanced to support + zero-copy and copy-on-demand for packet buffers which have their + payloads in application-managed memory. + Implemented by David Haas. + + Use PBUF_REF to make a pbuf refer to RAM. lwIP will use zero-copy + if an outgoing packet can be directly sent on the link, or perform + a copy-on-demand when necessary. + + The application can safely assume the packet is sent, and the RAM + is available to the application directly after calling udp_send() + or similar function. + + ++ Bugfixes: + + * ARP_QUEUEING should now correctly work for all cases, including + PBUF_REF. + Implemented by Leon Woestenberg. + + ++ Changes: + + * IP_ADDR_ANY is no longer a NULL pointer. Instead, it is a pointer + to a '0.0.0.0' IP address. + + * The packet buffer implementation is changed. The pbuf->ref counter + meaning has changed, and several pbuf functions have been + adapted accordingly. + + * netif drivers have to be changed to set the hardware address length field + that must be initialized correctly by the driver (hint: 6 for Ethernet MAC). + See the contrib/ports/c16x cs8900 driver as a driver example. + + * netif's have a dhcp field that must be initialized to NULL by the driver. + See the contrib/ports/c16x cs8900 driver as a driver example. + +(0.5.x) This file has been unmaintained up to 0.6.1. All changes are + logged in CVS but have not been explained here. + +(0.5.3) Changes since version 0.5.2 + + ++ Bugfixes: + + * memp_malloc(MEMP_API_MSG) could fail with multiple application + threads because it wasn't protected by semaphores. + + ++ Other changes: + + * struct ip_addr now packed. + + * The name of the time variable in arp.c has been changed to ctime + to avoid conflicts with the time() function. + +(0.5.2) Changes since version 0.5.1 + + ++ New features: + + * A new TCP function, tcp_tmr(), now handles both TCP timers. + + ++ Bugfixes: + + * A bug in tcp_parseopt() could cause the stack to hang because of a + malformed TCP option. + + * The address of new connections in the accept() function in the BSD + socket library was not handled correctly. + + * pbuf_dechain() did not update the ->tot_len field of the tail. + + * Aborted TCP connections were not handled correctly in all + situations. + + ++ Other changes: + + * All protocol header structs are now packed. + + * The ->len field in the tcp_seg structure now counts the actual + amount of data, and does not add one for SYN and FIN segments. + +(0.5.1) Changes since version 0.5.0 + + ++ New features: + + * Possible to run as a user process under Linux. + + * Preliminary support for cross platform packed structs. + + * ARP timer now implemented. + + ++ Bugfixes: + + * TCP output queue length was badly initialized when opening + connections. + + * TCP delayed ACKs were not sent correctly. + + * Explicit initialization of BSS segment variables. + + * read() in BSD socket library could drop data. + + * Problems with memory alignment. + + * Situations when all TCP buffers were used could lead to + starvation. + + * TCP MSS option wasn't parsed correctly. + + * Problems with UDP checksum calculation. + + * IP multicast address tests had endianess problems. + + * ARP requests had wrong destination hardware address. + + ++ Other changes: + + * struct eth_addr changed from u16_t[3] array to u8_t[6]. + + * A ->linkoutput() member was added to struct netif. + + * TCP and UDP ->dest_* struct members where changed to ->remote_*. + + * ntoh* macros are now null definitions for big endian CPUs. + +(0.5.0) Changes since version 0.4.2 + + ++ New features: + + * Redesigned operating system emulation layer to make porting easier. + + * Better control over TCP output buffers. + + * Documenation added. + + ++ Bugfixes: + + * Locking issues in buffer management. + + * Bugfixes in the sequential API. + + * IP forwarding could cause memory leakage. This has been fixed. + + ++ Other changes: + + * Directory structure somewhat changed; the core/ tree has been + collapsed. + +(0.4.2) Changes since version 0.4.1 + + ++ New features: + + * Experimental ARP implementation added. + + * Skeleton Ethernet driver added. + + * Experimental BSD socket API library added. + + ++ Bugfixes: + + * In very intense situations, memory leakage could occur. This has + been fixed. + + ++ Other changes: + + * Variables named "data" and "code" have been renamed in order to + avoid name conflicts in certain compilers. + + * Variable++ have in appliciable cases been translated to ++variable + since some compilers generate better code in the latter case. + +(0.4.1) Changes since version 0.4 + + ++ New features: + + * TCP: Connection attempts time out earlier than data + transmissions. Nagle algorithm implemented. Push flag set on the + last segment in a burst. + + * UDP: experimental support for UDP-Lite extensions. + + ++ Bugfixes: + + * TCP: out of order segments were in some cases handled incorrectly, + and this has now been fixed. Delayed acknowledgements was broken + in 0.4, has now been fixed. Binding to an address that is in use + now results in an error. Reset connections sometimes hung an + application; this has been fixed. + + * Checksum calculation sometimes failed for chained pbufs with odd + lengths. This has been fixed. + + * API: a lot of bug fixes in the API. The UDP API has been improved + and tested. Error reporting and handling has been + improved. Logical flaws and race conditions for incoming TCP + connections has been found and removed. + + * Memory manager: alignment issues. Reallocating memory sometimes + failed, this has been fixed. + + * Generic library: bcopy was flawed and has been fixed. + + ++ Other changes: + + * API: all datatypes has been changed from generic ones such as + ints, to specified ones such as u16_t. Functions that return + errors now have the correct type (err_t). + + * General: A lot of code cleaned up and debugging code removed. Many + portability issues have been fixed. + + * The license was changed; the advertising clause was removed. + + * C64 port added. + + * Thanks: Huge thanks go to Dagan Galarneau, Horst Garnetzke, Petri + Kosunen, Mikael Caleres, and Frits Wilmink for reporting and + fixing bugs! + +(0.4) Changes since version 0.3.1 + + * Memory management has been radically changed; instead of + allocating memory from a shared heap, memory for objects that are + rapidly allocated and deallocated is now kept in pools. Allocation + and deallocation from those memory pools is very fast. The shared + heap is still present but is used less frequently. + + * The memory, memory pool, and packet buffer subsystems now support + 4-, 2-, or 1-byte alignment. + + * "Out of memory" situations are handled in a more robust way. + + * Stack usage has been reduced. + + * Easier configuration of lwIP parameters such as memory usage, + TTLs, statistics gathering, etc. All configuration parameters are + now kept in a single header file "lwipopts.h". + + * The directory structure has been changed slightly so that all + architecture specific files are kept under the src/arch + hierarchy. + + * Error propagation has been improved, both in the protocol modules + and in the API. + + * The code for the RTXC architecture has been implemented, tested + and put to use. + + * Bugs have been found and corrected in the TCP, UDP, IP, API, and + the Internet checksum modules. + + * Bugs related to porting between a 32-bit and a 16-bit architecture + have been found and corrected. + + * The license has been changed slightly to conform more with the + original BSD license, including the advertisement clause. + +(0.3.1) Changes since version 0.3 + + * Fix of a fatal bug in the buffer management. Pbufs with allocated + RAM never returned the RAM when the pbuf was deallocated. + + * TCP congestion control, window updates and retransmissions did not + work correctly. This has now been fixed. + + * Bugfixes in the API. + +(0.3) Changes since version 0.2 + + * New and improved directory structure. All include files are now + kept in a dedicated include/ directory. + + * The API now has proper error handling. A new function, + netconn_err(), now returns an error code for the connection in + case of errors. + + * Improvements in the memory management subsystem. The system now + keeps a pointer to the lowest free memory block. A new function, + mem_malloc2() tries to allocate memory once, and if it fails tries + to free some memory and retry the allocation. + + * Much testing has been done with limited memory + configurations. lwIP now does a better job when overloaded. + + * Some bugfixes and improvements to the buffer (pbuf) subsystem. + + * Many bugfixes in the TCP code: + + - Fixed a bug in tcp_close(). + + - The TCP receive window was incorrectly closed when out of + sequence segments was received. This has been fixed. + + - Connections are now timed-out of the FIN-WAIT-2 state. + + - The initial congestion window could in some cases be too + large. This has been fixed. + + - The retransmission queue could in some cases be screwed up. This + has been fixed. + + - TCP RST flag now handled correctly. + + - Out of sequence data was in some cases never delivered to the + application. This has been fixed. + + - Retransmitted segments now contain the correct acknowledgment + number and advertised window. + + - TCP retransmission timeout backoffs are not correctly computed + (ala BSD). After a number of retransmissions, TCP now gives up + the connection. + + * TCP connections now are kept on three lists, one for active + connections, one for listening connections, and one for + connections that are in TIME-WAIT. This greatly speeds up the fast + timeout processing for sending delayed ACKs. + + * TCP now provides proper feedback to the application when a + connection has been successfully set up. + + * More comments have been added to the code. The code has also been + somewhat cleaned up. + +(0.2) Initial public release. |