This file lists major changes between release versions that require | |
ports or applications to be changed. Use it to update a port or an | |
application written for an older version of lwIP to correctly work | |
with newer versions. | |
(git master) | |
* [Enter new changes just after this line - do not remove this line] | |
(2.1.0) | |
++ Application changes: | |
* Use the new altcp API for seamless TLS integration into existing TCP applications (see changelog) | |
* TCP only kills existing connections with a LOWER priority than the one currently being opened. | |
Previous implementations also kill existing connections of the SAME priority. | |
* ip4_route_src: parameter order is reversed: ip4_route_src(dest, src) -> ip4_route_src(src, dest) | |
to make parameter order consistent with other ip*_route*() functions. | |
Same also applies to LWIP_HOOK_IP4_ROUTE_SRC() parameter order. | |
* pbuf API: pbuf->type (an u8_t holding the enum 'pbuf_type') has changed to only hold a | |
description of the pbuf (e.g. data following pbuf struct, data volatile, allocation | |
source heap/pool/etc.). As a consequence, applications can't test pbuf->type any more. | |
Use pbuf_match_type(pbuf, type) instead. | |
* socket API: according to the standard, SO_ERROR now only returns asynchronous errors. | |
All other/normal/synchronous errors are (and always were) available via 'errno'. | |
LWIP_SOCKET_SET_ERRNO has been removed - 'errno' is always set - and required! | |
* httpd LWIP_HTTPD_CGI_SSI: httpd_cgi_handler() has an additional parameter "struct fs_file *" | |
++ Port changes: | |
* tcpip_trycallback() was renamed to tcpip_callbackmsg_trycallback() to avoid confusion | |
with tcpip_try_callback() | |
* compatibility headers: moved from 'src/include/posix' to 'src/include/compat/posix', | |
'src/include/compat/stdc' etc. | |
* The IPv6 implementation now supports address scopes. (See LWIP_IPV6_SCOPES documentation | |
and ip6_zone.h for more documentation) | |
* LWIP_HOOK_DHCP_APPEND_OPTIONS() has changed, see description in opt.h (options_out_len is not | |
available in struct dhcp any more) | |
* Added debug helper asserts to ensure threading/locking requirements are met (define | |
LWIP_MARK_TCPIP_THREAD() and LWIP_ASSERT_CORE_LOCKED()). | |
* Added sys_mbox_trypost_fromisr() and tcpip_callbackmsg_trycallback_fromisr() | |
These can be used to post preallocated messages from an ISR to the tcpip thread | |
(e.g. when using FreeRTOS) | |
(2.0.2) | |
++ Application changes: | |
* slipif: The way to pass serial port number has changed. netif->num is not | |
supported any more, netif->state is interpreted as an u8_t port number now | |
(it's not a POINTER to an u8_t any more!) | |
(2.0.1) | |
++ Application changes: | |
* UDP does NOT receive multicast traffic from ALL netifs on an UDP PCB bound to a specific | |
netif any more. Users need to bind to IP_ADDR_ANY to receive multicast traffic and compare | |
ip_current_netif() to the desired netif for every packet. | |
See bug #49662 for an explanation. | |
(2.0.0) | |
++ Application changes: | |
* Changed netif "up" flag handling to be an administrative flag (as opposed to the previous meaning of | |
"ip4-address-valid", a netif will now not be used for transmission if not up) -> even a DHCP netif | |
has to be set "up" before starting the DHCP client | |
* Added IPv6 support (dual-stack or IPv4/IPv6 only) | |
* Changed ip_addr_t to be a union in dual-stack mode (use ip4_addr_t where referring to IPv4 only). | |
* Major rewrite of SNMP (added MIB parser that creates code stubs for custom MIBs); | |
supports SNMPv2c (experimental v3 support) | |
* Moved some core applications from contrib repository to src/apps (and include/lwip/apps) | |
+++ Raw API: | |
* Changed TCP listen backlog: removed tcp_accepted(), added the function pair tcp_backlog_delayed()/ | |
tcp_backlog_accepted() to explicitly delay backlog handling on a connection pcb | |
+++ Socket API: | |
* Added an implementation for posix sendmsg() | |
* Added LWIP_FIONREAD_LINUXMODE that makes ioctl/FIONREAD return the size of the next pending datagram | |
++ Port changes | |
+++ new files: | |
* MANY new and moved files! | |
* Added src/Filelists.mk for use in Makefile projects | |
* Continued moving stack-internal parts from abc.h to abc_priv.h in sub-folder "priv" | |
to let abc.h only contain the actual application programmer's API | |
+++ sys layer: | |
* Made LWIP_TCPIP_CORE_LOCKING==1 the default as it usually performs better than | |
the traditional message passing (although with LWIP_COMPAT_MUTEX you are still | |
open to priority inversion, so this is not recommended any more) | |
* Added LWIP_NETCONN_SEM_PER_THREAD to use one "op_completed" semaphore per thread | |
instead of using one per netconn (these semaphores are used even with core locking | |
enabled as some longer lasting functions like big writes still need to delay) | |
* Added generalized abstraction for itoa(), strnicmp(), stricmp() and strnstr() | |
in def.h (to be overridden in cc.h) instead of config | |
options for netbiosns, httpd, dns, etc. ... | |
* New abstraction for hton* and ntoh* functions in def.h. | |
To override them, use the following in cc.h: | |
#define lwip_htons(x) <your_htons> | |
#define lwip_htonl(x) <your_htonl> | |
+++ new options: | |
* TODO | |
+++ new pools: | |
* Added LWIP_MEMPOOL_* (declare/init/alloc/free) to declare private memp pools | |
that share memp.c code but do not have to be made global via lwippools.h | |
* Added pools for IPv6, MPU_COMPATIBLE, dns-api, netif-api, etc. | |
* added hook LWIP_HOOK_MEMP_AVAILABLE() to get informed when a memp pool was empty and an item | |
is now available | |
* Signature of LWIP_HOOK_VLAN_SET macro was changed | |
* LWIP_DECLARE_MEMORY_ALIGNED() may be used to declare aligned memory buffers (mem/memp) | |
or to move buffers to dedicated memory using compiler attributes | |
* Standard C headers are used to define sized types and printf formatters | |
(disable by setting LWIP_NO_STDINT_H=1 or LWIP_NO_INTTYPES_H=1 if your compiler | |
does not support these) | |
++ Major bugfixes/improvements | |
* Added IPv6 support (dual-stack or IPv4/IPv6 only) | |
* Major rewrite of PPP (incl. keep-up with apache pppd) | |
see doc/ppp.txt for an upgrading how-to | |
* Major rewrite of SNMP (incl. MIB parser) | |
* Fixed timing issues that might have lead to losing a DHCP lease | |
* Made rx processing path more robust against crafted errors | |
* TCP window scaling support | |
* modification of api modules to support FreeRTOS-MPU (don't pass stack-pointers to other threads) | |
* made DNS client more robust | |
* support PBUF_REF for RX packets | |
* LWIP_NETCONN_FULLDUPLEX allows netconn/sockets to be used for reading/writing from separate | |
threads each (needs LWIP_NETCONN_SEM_PER_THREAD) | |
* Moved and reordered stats (mainly memp/mib2) | |
(1.4.0) | |
++ Application changes: | |
* Replaced struct ip_addr by typedef ip_addr_t (struct ip_addr is kept for | |
compatibility to old applications, but will be removed in the future). | |
* Renamed mem_realloc() to mem_trim() to prevent confusion with realloc() | |
+++ Raw API: | |
* Changed the semantics of tcp_close() (since it was rather a | |
shutdown before): Now the application does *NOT* get any calls to the recv | |
callback (aside from NULL/closed) after calling tcp_close() | |
* When calling tcp_abort() from a raw API TCP callback function, | |
make sure you return ERR_ABRT to prevent accessing unallocated memory. | |
(ERR_ABRT now means the applicaiton has called tcp_abort!) | |
+++ Netconn API: | |
* Changed netconn_receive() and netconn_accept() to return | |
err_t, not a pointer to new data/netconn. | |
+++ Socket API: | |
* LWIP_SO_RCVTIMEO: when accept() or recv() time out, they | |
now set errno to EWOULDBLOCK/EAGAIN, not ETIMEDOUT. | |
* Added a minimal version of posix fctl() to have a | |
standardised way to set O_NONBLOCK for nonblocking sockets. | |
+++ all APIs: | |
* correctly implemented SO(F)_REUSEADDR | |
++ Port changes | |
+++ new files: | |
* Added 4 new files: def.c, timers.c, timers.h, tcp_impl.h: | |
* Moved stack-internal parts of tcp.h to tcp_impl.h, tcp.h now only contains | |
the actual application programmer's API | |
* Separated timer implementation from sys.h/.c, moved to timers.h/.c; | |
Added timer implementation for NO_SYS==1, set NO_SYS_NO_TIMERS==1 if you | |
still want to use your own timer implementation for NO_SYS==0 (as before). | |
+++ sys layer: | |
* Converted mbox- and semaphore-functions to take pointers to sys_mbox_t/ | |
sys_sem_t; | |
* Converted sys_mbox_new/sys_sem_new to take pointers and return err_t; | |
* Added Mutex concept in sys_arch (define LWIP_COMPAT_MUTEX to let sys.h use | |
binary semaphores instead of mutexes - as before) | |
+++ new options: | |
* Don't waste memory when chaining segments, added option TCP_OVERSIZE to | |
prevent creating many small pbufs when calling tcp_write with many small | |
blocks of data. Instead, pbufs are allocated larger than needed and the | |
space is used for later calls to tcp_write. | |
* Added LWIP_NETIF_TX_SINGLE_PBUF to always copy to try to create single pbufs | |
in tcp_write/udp_send. | |
* Added an additional option LWIP_ETHERNET to support ethernet without ARP | |
(necessary for pure PPPoE) | |
* Add MEMP_SEPARATE_POOLS to place memory pools in separate arrays. This may | |
be used to place these pools into user-defined memory by using external | |
declaration. | |
* Added TCP_SNDQUEUELOWAT corresponding to TCP_SNDLOWAT | |
+++ new pools: | |
* Netdb uses a memp pool for allocating memory when getaddrinfo() is called, | |
so MEMP_NUM_NETDB has to be set accordingly. | |
* DNS_LOCAL_HOSTLIST_IS_DYNAMIC uses a memp pool instead of the heap, so | |
MEMP_NUM_LOCALHOSTLIST has to be set accordingly. | |
* Snmp-agent uses a memp pools instead of the heap, so MEMP_NUM_SNMP_* have | |
to be set accordingly. | |
* PPPoE uses a MEMP pool instead of the heap, so MEMP_NUM_PPPOE_INTERFACES | |
has to be set accordingly | |
* Integrated loopif into netif.c - loopif does not have to be created by the | |
port any more, just define LWIP_HAVE_LOOPIF to 1. | |
* Added define LWIP_RAND() for lwip-wide randomization (needs to be defined | |
in cc.h, e.g. used by igmp) | |
* Added printf-formatter X8_F to printf u8_t as hex | |
* The heap now may be moved to user-defined memory by defining | |
LWIP_RAM_HEAP_POINTER as a void pointer to that memory's address | |
* added autoip_set_struct() and dhcp_set_struct() to let autoip and dhcp work | |
with user-allocated structs instead of calling mem_malloc | |
* Added const char* name to mem- and memp-stats for easier debugging. | |
* Calculate the TCP/UDP checksum while copying to only fetch data once: | |
Define LWIP_CHKSUM_COPY to a memcpy-like function that returns the checksum | |
* Added SO_REUSE_RXTOALL to pass received UDP broadcast/multicast packets to | |
more than one pcb. | |
* Changed the semantics of ARP_QUEUEING==0: ARP_QUEUEING now cannot be turned | |
off any more, if this is set to 0, only one packet (the most recent one) is | |
queued (like demanded by RFC 1122). | |
++ Major bugfixes/improvements | |
* Implemented tcp_shutdown() to only shut down one end of a connection | |
* Implemented shutdown() at socket- and netconn-level | |
* Added errorset support to select() + improved select speed overhead | |
* Merged pppd to v2.3.11 (including some backported bugfixes from 2.4.x) | |
* Added timer implementation for NO_SYS==1 (may be disabled with NO_SYS_NO_TIMERS==1 | |
* Use macros defined in ip_addr.h to work with IP addresses | |
* Implemented many nonblocking socket/netconn functions | |
* Fixed ARP input processing: only add a new entry if a request was directed as us | |
* mem_realloc() to mem_trim() to prevent confusion with realloc() | |
* Some improvements for AutoIP (don't route/forward link-local addresses, don't break | |
existing connections when assigning a routable address) | |
* Correctly handle remote side overrunning our rcv_wnd in ooseq case | |
* Removed packing from ip_addr_t, the packed version is now only used in protocol headers | |
* Corrected PBUF_POOL_BUFSIZE for ports where ETH_PAD_SIZE > 0 | |
* Added support for static ARP table entries | |
(STABLE-1.3.2) | |
* initial version of this file |