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2 ports or applications to be changed. Use it to update a port or an
3 application written for an older version of lwIP to correctly work
14     compatibility to old applications, but will be removed in the future).
16   * Renamed mem_realloc() to mem_trim() to prevent confusion with realloc()
20       shutdown before): Now the application does *NOT* get any calls to the recv
24       make sure you return ERR_ABRT to prevent accessing unallocated memory.
28     * Changed netconn_receive() and netconn_accept() to return
29       err_t, not a pointer to new data/netconn.
33       now set errno to EWOULDBLOCK/EAGAIN, not ETIMEDOUT.
35     * Added a minimal version of posix fctl() to have a
36       standardised way to set O_NONBLOCK for nonblocking sockets.
47     * Moved stack-internal parts of tcp.h to tcp_impl.h, tcp.h now only contains
50     * Separated timer implementation from sys.h/.c, moved to timers.h/.c;
52       still want to use your own timer implementation for NO_SYS==0 (as before).
56     * Converted mbox- and semaphore-functions to take pointers to sys_mbox_t/
59     * Converted sys_mbox_new/sys_sem_new to take pointers and return err_t;
61     * Added Mutex concept in sys_arch (define LWIP_COMPAT_MUTEX to let sys.h use
66      * Don't waste memory when chaining segments, added option TCP_OVERSIZE to
69        space is used for later calls to tcp_write.
71      * Added LWIP_NETIF_TX_SINGLE_PBUF to always copy to try to create single pbufs
74     * Added an additional option LWIP_ETHERNET to support ethernet without ARP
77     * Add MEMP_SEPARATE_POOLS to place memory pools in separate arrays. This may
78       be used to place these pools into user-defined memory by using external
81     * Added TCP_SNDQUEUELOWAT corresponding to TCP_SNDLOWAT
86        so MEMP_NUM_NETDB has to be set accordingly.
89        MEMP_NUM_LOCALHOSTLIST has to be set accordingly.
92        to be set accordingly.
95        has to be set accordingly
97   * Integrated loopif into netif.c - loopif does not have to be created by the
98     port any more, just define LWIP_HAVE_LOOPIF to 1.
100   * Added define LWIP_RAND() for lwip-wide randomization (needs to be defined
103   * Added printf-formatter X8_F to printf u8_t as hex
105   * The heap now may be moved to user-defined memory by defining
106     LWIP_RAM_HEAP_POINTER as a void pointer to that memory's address
108   * added autoip_set_struct() and dhcp_set_struct() to let autoip and dhcp work
111   * Added const char* name to mem- and memp-stats for easier debugging.
113   * Calculate the TCP/UDP checksum while copying to only fetch data once:
114     Define LWIP_CHKSUM_COPY to a memcpy-like function that returns the checksum
116   * Added SO_REUSE_RXTOALL to pass received UDP broadcast/multicast packets to
120     off any more, if this is set to 0, only one packet (the most recent one) is
126   * Implemented tcp_shutdown() to only shut down one end of a connection
128   * Added errorset support to select() + improved select speed overhead
129   * Merged pppd to v2.3.11 (including some backported bugfixes from 2.4.x)
131   * Use macros defined in ip_addr.h to work with IP addresses
134   * mem_realloc() to mem_trim() to prevent confusion with realloc()