145 lines
5.7 KiB
Plaintext
145 lines
5.7 KiB
Plaintext
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This file lists major changes between release versions that require
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ports or applications to be changed. Use it to update a port or an
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application written for an older version of lwIP to correctly work
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with newer versions.
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(CVS HEAD)
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* [Enter new changes just after this line - do not remove this line]
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++ Application changes:
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* Replaced struct ip_addr by typedef ip_addr_t (struct ip_addr is kept for
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compatibility to old applications, but will be removed in the future).
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* Renamed mem_realloc() to mem_trim() to prevent confusion with realloc()
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+++ Raw API:
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* Changed the semantics of tcp_close() (since it was rather a
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shutdown before): Now the application does *NOT* get any calls to the recv
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callback (aside from NULL/closed) after calling tcp_close()
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* When calling tcp_abort() from a raw API TCP callback function,
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make sure you return ERR_ABRT to prevent accessing unallocated memory.
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(ERR_ABRT now means the applicaiton has called tcp_abort!)
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+++ Netconn API:
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* Changed netconn_receive() and netconn_accept() to return
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err_t, not a pointer to new data/netconn.
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+++ Socket API:
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* LWIP_SO_RCVTIMEO: when accept() or recv() time out, they
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now set errno to EWOULDBLOCK/EAGAIN, not ETIMEDOUT.
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* Added a minimal version of posix fctl() to have a
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standardised way to set O_NONBLOCK for nonblocking sockets.
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+++ all APIs:
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* correctly implemented SO(F)_REUSEADDR
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++ Port changes
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+++ new files:
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* Added 4 new files: def.c, timers.c, timers.h, tcp_impl.h:
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* Moved stack-internal parts of tcp.h to tcp_impl.h, tcp.h now only contains
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the actual application programmer's API
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* Separated timer implementation from sys.h/.c, moved to timers.h/.c;
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Added timer implementation for NO_SYS==1, set NO_SYS_NO_TIMERS==1 if you
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still want to use your own timer implementation for NO_SYS==0 (as before).
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+++ sys layer:
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* Converted mbox- and semaphore-functions to take pointers to sys_mbox_t/
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sys_sem_t;
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* Converted sys_mbox_new/sys_sem_new to take pointers and return err_t;
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* Added Mutex concept in sys_arch (define LWIP_COMPAT_MUTEX to let sys.h use
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binary semaphores instead of mutexes - as before)
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+++ new options:
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* Don't waste memory when chaining segments, added option TCP_OVERSIZE to
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prevent creating many small pbufs when calling tcp_write with many small
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blocks of data. Instead, pbufs are allocated larger than needed and the
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space is used for later calls to tcp_write.
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* Added LWIP_NETIF_TX_SINGLE_PBUF to always copy to try to create single pbufs
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in tcp_write/udp_send.
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* Added an additional option LWIP_ETHERNET to support ethernet without ARP
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(necessary for pure PPPoE)
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* Add MEMP_SEPARATE_POOLS to place memory pools in separate arrays. This may
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be used to place these pools into user-defined memory by using external
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declaration.
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* Added TCP_SNDQUEUELOWAT corresponding to TCP_SNDLOWAT
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+++ new pools:
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* Netdb uses a memp pool for allocating memory when getaddrinfo() is called,
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so MEMP_NUM_NETDB has to be set accordingly.
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* DNS_LOCAL_HOSTLIST_IS_DYNAMIC uses a memp pool instead of the heap, so
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MEMP_NUM_LOCALHOSTLIST has to be set accordingly.
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* Snmp-agent uses a memp pools instead of the heap, so MEMP_NUM_SNMP_* have
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to be set accordingly.
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* PPPoE uses a MEMP pool instead of the heap, so MEMP_NUM_PPPOE_INTERFACES
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has to be set accordingly
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* Integrated loopif into netif.c - loopif does not have to be created by the
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port any more, just define LWIP_HAVE_LOOPIF to 1.
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* Added define LWIP_RAND() for lwip-wide randomization (needs to be defined
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in cc.h, e.g. used by igmp)
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* Added printf-formatter X8_F to printf u8_t as hex
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* The heap now may be moved to user-defined memory by defining
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LWIP_RAM_HEAP_POINTER as a void pointer to that memory's address
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* added autoip_set_struct() and dhcp_set_struct() to let autoip and dhcp work
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with user-allocated structs instead of calling mem_malloc
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* Added const char* name to mem- and memp-stats for easier debugging.
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* Calculate the TCP/UDP checksum while copying to only fetch data once:
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Define LWIP_CHKSUM_COPY to a memcpy-like function that returns the checksum
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* Added SO_REUSE_RXTOALL to pass received UDP broadcast/multicast packets to
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more than one pcb.
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* Changed the semantics of ARP_QUEUEING==0: ARP_QUEUEING now cannot be turned
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off any more, if this is set to 0, only one packet (the most recent one) is
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queued (like demanded by RFC 1122).
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++ Major bugfixes/improvements
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* Implemented tcp_shutdown() to only shut down one end of a connection
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* Implemented shutdown() at socket- and netconn-level
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* Added errorset support to select() + improved select speed overhead
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* Merged pppd to v2.3.11 (including some backported bugfixes from 2.4.x)
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* Added timer implementation for NO_SYS==1 (may be disabled with NO_SYS_NO_TIMERS==1
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* Use macros defined in ip_addr.h to work with IP addresses
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* Implemented many nonblocking socket/netconn functions
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* Fixed ARP input processing: only add a new entry if a request was directed as us
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* mem_realloc() to mem_trim() to prevent confusion with realloc()
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* Some improvements for AutoIP (don't route/forward link-local addresses, don't break
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existing connections when assigning a routable address)
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* Correctly handle remote side overrunning our rcv_wnd in ooseq case
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* Removed packing from ip_addr_t, the packed version is now only used in protocol headers
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* Corrected PBUF_POOL_BUFSIZE for ports where ETH_PAD_SIZE > 0
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* Added support for static ARP table entries
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(STABLE-1.3.2)
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* initial version of this file
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