diff options
Diffstat (limited to 'lwip/UPGRADING')
| -rw-r--r-- | lwip/UPGRADING | 133 |
1 files changed, 132 insertions, 1 deletions
diff --git a/lwip/UPGRADING b/lwip/UPGRADING index 6501107..85be6c9 100644 --- a/lwip/UPGRADING +++ b/lwip/UPGRADING @@ -4,12 +4,143 @@ application written for an older version of lwIP to correctly work with newer versions. -(CVS HEAD) +(git master) * [Enter new changes just after this line - do not remove this line] ++ Application changes: + * 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! + + * compatibility headers: moved from 'src/include/posix' to 'src/include/compat/posix', + 'src/include/compat/stdc' etc. + + * The IPv6 implementation now supports address scopes. All addresses that have a scope according + to the default policy (link-local unicast addresses, interface-local and link-local multicast + addresses) should now have a zone set on them before being passed to the core API, although + lwIP will currently attempt to select a zone on the caller's behalf when necessary. + Applications that directly assign IPv6 addresses to interfaces (which is NOT recommended) + must now ensure that link-local addresses carry the netif's zone. See the new ip6_zone.h header + file for more information and relevant macros. For now it is still possible to turn off scopes + support through the new LWIP_IPV6_SCOPES option. When upgrading an implementation that uses the + core API directly, it is highly recommended to enable LWIP_IPV6_SCOPES_DEBUG at least for + a while, to ensure e.g. proper address initialization. + + * LWIP_HOOK_DHCP_APPEND_OPTIONS() has changed, see description in opt.h (options_out_len is not + available in struct dhcp any more) + +(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). |