opt.h

00001 /**
00002  * @file
00003  *
00004  * lwIP Options Configuration
00005  */
00006 
00007 /*
00008  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
00009  * All rights reserved.
00010  *
00011  * Redistribution and use in source and binary forms, with or without modification,
00012  * are permitted provided that the following conditions are met:
00013  *
00014  * 1. Redistributions of source code must retain the above copyright notice,
00015  *    this list of conditions and the following disclaimer.
00016  * 2. Redistributions in binary form must reproduce the above copyright notice,
00017  *    this list of conditions and the following disclaimer in the documentation
00018  *    and/or other materials provided with the distribution.
00019  * 3. The name of the author may not be used to endorse or promote products
00020  *    derived from this software without specific prior written permission.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
00023  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00024  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
00025  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00026  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
00027  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00028  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00029  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
00030  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
00031  * OF SUCH DAMAGE.
00032  *
00033  * This file is part of the lwIP TCP/IP stack.
00034  *
00035  * Author: Adam Dunkels <adam@sics.se>
00036  *
00037  */
00038 
00039 /*
00040  * NOTE: || defined __DOXYGEN__ is a workaround for doxygen bug -
00041  * without this, doxygen does not see the actual #define
00042  */
00043 
00044 #if !defined LWIP_HDR_OPT_H
00045 #define LWIP_HDR_OPT_H
00046 
00047 /*
00048  * Include user defined options first. Anything not defined in these files
00049  * will be set to standard values. Override anything you don't like!
00050  */
00051 #include "lwipopts.h"
00052 #include "lwip/debug.h"
00053 
00054 /**
00055  * @defgroup lwip_opts Options (lwipopts.h)
00056  * @ingroup lwip
00057  *
00058  * @defgroup lwip_opts_debug Debugging
00059  * @ingroup lwip_opts
00060  *
00061  * @defgroup lwip_opts_infrastructure Infrastructure
00062  * @ingroup lwip_opts
00063  *
00064  * @defgroup lwip_opts_callback Callback-style APIs
00065  * @ingroup lwip_opts
00066  *
00067  * @defgroup lwip_opts_threadsafe_apis Thread-safe APIs
00068  * @ingroup lwip_opts
00069  */
00070 
00071  /*
00072    ------------------------------------
00073    -------------- NO SYS --------------
00074    ------------------------------------
00075 */
00076 /**
00077  * @defgroup lwip_opts_nosys NO_SYS
00078  * @ingroup lwip_opts_infrastructure
00079  * @{
00080  */
00081 /**
00082  * NO_SYS==1: Use lwIP without OS-awareness (no thread, semaphores, mutexes or
00083  * mboxes). This means threaded APIs cannot be used (socket, netconn,
00084  * i.e. everything in the 'api' folder), only the callback-style raw API is
00085  * available (and you have to watch out for yourself that you don't access
00086  * lwIP functions/structures from more than one context at a time!)
00087  */
00088 #if !defined NO_SYS || defined __DOXYGEN__
00089 #define NO_SYS                          0
00090 #endif
00091 /**
00092  * @}
00093  */
00094 
00095 /**
00096  * @defgroup lwip_opts_timers Timers
00097  * @ingroup lwip_opts_infrastructure
00098  * @{
00099  */
00100 /**
00101  * LWIP_TIMERS==0: Drop support for sys_timeout and lwip-internal cyclic timers.
00102  * (the array of lwip-internal cyclic timers is still provided)
00103  * (check NO_SYS_NO_TIMERS for compatibility to old versions)
00104  */
00105 #if !defined LWIP_TIMERS || defined __DOXYGEN__
00106 #ifdef NO_SYS_NO_TIMERS
00107 #define LWIP_TIMERS                     (!NO_SYS || (NO_SYS && !NO_SYS_NO_TIMERS))
00108 #else
00109 #define LWIP_TIMERS                     1
00110 #endif
00111 #endif
00112 
00113 /**
00114  * LWIP_TIMERS_CUSTOM==1: Provide your own timer implementation.
00115  * Function prototypes in timeouts.h and the array of lwip-internal cyclic timers
00116  * are still included, but the implementation is not. The following functions
00117  * will be required: sys_timeouts_init(), sys_timeout(), sys_untimeout(),
00118  *                   sys_timeouts_mbox_fetch()
00119  */
00120 #if !defined LWIP_TIMERS_CUSTOM || defined __DOXYGEN__
00121 #define LWIP_TIMERS_CUSTOM              0
00122 #endif
00123 /**
00124  * @}
00125  */
00126 
00127 /**
00128  * @defgroup lwip_opts_memcpy memcpy
00129  * @ingroup lwip_opts_infrastructure
00130  * @{
00131  */
00132 /**
00133  * MEMCPY: override this if you have a faster implementation at hand than the
00134  * one included in your C library
00135  */
00136 #if !defined MEMCPY || defined __DOXYGEN__
00137 #define MEMCPY(dst,src,len)             memcpy(dst,src,len)
00138 #endif
00139 
00140 /**
00141  * SMEMCPY: override this with care! Some compilers (e.g. gcc) can inline a
00142  * call to memcpy() if the length is known at compile time and is small.
00143  */
00144 #if !defined SMEMCPY || defined __DOXYGEN__
00145 #define SMEMCPY(dst,src,len)            memcpy(dst,src,len)
00146 #endif
00147 /**
00148  * @}
00149  */
00150 
00151 /*
00152    ------------------------------------
00153    ----------- Core locking -----------
00154    ------------------------------------
00155 */
00156 /**
00157  * @defgroup lwip_opts_lock Core locking and MPU
00158  * @ingroup lwip_opts_infrastructure
00159  * @{
00160  */
00161 /**
00162  * LWIP_MPU_COMPATIBLE: enables special memory management mechanism
00163  * which makes lwip able to work on MPU (Memory Protection Unit) system
00164  * by not passing stack-pointers to other threads
00165  * (this decreases performance as memory is allocated from pools instead
00166  * of keeping it on the stack)
00167  */
00168 #if !defined LWIP_MPU_COMPATIBLE || defined __DOXYGEN__
00169 #define LWIP_MPU_COMPATIBLE             0
00170 #endif
00171 
00172 /**
00173  * LWIP_TCPIP_CORE_LOCKING
00174  * Creates a global mutex that is held during TCPIP thread operations.
00175  * Can be locked by client code to perform lwIP operations without changing
00176  * into TCPIP thread using callbacks. See LOCK_TCPIP_CORE() and
00177  * UNLOCK_TCPIP_CORE().
00178  * Your system should provide mutexes supporting priority inversion to use this.
00179  */
00180 #if !defined LWIP_TCPIP_CORE_LOCKING || defined __DOXYGEN__
00181 #define LWIP_TCPIP_CORE_LOCKING         1
00182 #endif
00183 
00184 /**
00185  * LWIP_TCPIP_CORE_LOCKING_INPUT: when LWIP_TCPIP_CORE_LOCKING is enabled,
00186  * this lets tcpip_input() grab the mutex for input packets as well,
00187  * instead of allocating a message and passing it to tcpip_thread.
00188  *
00189  * ATTENTION: this does not work when tcpip_input() is called from
00190  * interrupt context!
00191  */
00192 #if !defined LWIP_TCPIP_CORE_LOCKING_INPUT || defined __DOXYGEN__
00193 #define LWIP_TCPIP_CORE_LOCKING_INPUT   0
00194 #endif
00195 
00196 /**
00197  * SYS_LIGHTWEIGHT_PROT==1: enable inter-task protection (and task-vs-interrupt
00198  * protection) for certain critical regions during buffer allocation, deallocation
00199  * and memory allocation and deallocation.
00200  * ATTENTION: This is required when using lwIP from more than one context! If
00201  * you disable this, you must be sure what you are doing!
00202  */
00203 #if !defined SYS_LIGHTWEIGHT_PROT || defined __DOXYGEN__
00204 #define SYS_LIGHTWEIGHT_PROT            1
00205 #endif
00206 /**
00207  * @}
00208  */
00209 
00210 /*
00211    ------------------------------------
00212    ---------- Memory options ----------
00213    ------------------------------------
00214 */
00215 /**
00216  * @defgroup lwip_opts_mem Heap and memory pools
00217  * @ingroup lwip_opts_infrastructure
00218  * @{
00219  */
00220 /**
00221  * MEM_LIBC_MALLOC==1: Use malloc/free/realloc provided by your C-library
00222  * instead of the lwip internal allocator. Can save code size if you
00223  * already use it.
00224  */
00225 #if !defined MEM_LIBC_MALLOC || defined __DOXYGEN__
00226 #define MEM_LIBC_MALLOC                 0
00227 #endif
00228 
00229 /**
00230  * MEMP_MEM_MALLOC==1: Use mem_malloc/mem_free instead of the lwip pool allocator.
00231  * Especially useful with MEM_LIBC_MALLOC but handle with care regarding execution
00232  * speed (heap alloc can be much slower than pool alloc) and usage from interrupts
00233  * (especially if your netif driver allocates PBUF_POOL pbufs for received frames
00234  * from interrupt)!
00235  * ATTENTION: Currently, this uses the heap for ALL pools (also for private pools,
00236  * not only for internal pools defined in memp_std.h)!
00237  */
00238 #if !defined MEMP_MEM_MALLOC || defined __DOXYGEN__
00239 #define MEMP_MEM_MALLOC                 0
00240 #endif
00241 
00242 /**
00243  * MEM_ALIGNMENT: should be set to the alignment of the CPU
00244  *    4 byte alignment -> \#define MEM_ALIGNMENT 4
00245  *    2 byte alignment -> \#define MEM_ALIGNMENT 2
00246  */
00247 #if !defined MEM_ALIGNMENT || defined __DOXYGEN__
00248 #define MEM_ALIGNMENT                   1
00249 #endif
00250 
00251 /**
00252  * MEM_SIZE: the size of the heap memory. If the application will send
00253  * a lot of data that needs to be copied, this should be set high.
00254  */
00255 #if !defined MEM_SIZE || defined __DOXYGEN__
00256 #define MEM_SIZE                        1600
00257 #endif
00258 
00259 /**
00260  * MEMP_OVERFLOW_CHECK: memp overflow protection reserves a configurable
00261  * amount of bytes before and after each memp element in every pool and fills
00262  * it with a prominent default value.
00263  *    MEMP_OVERFLOW_CHECK == 0 no checking
00264  *    MEMP_OVERFLOW_CHECK == 1 checks each element when it is freed
00265  *    MEMP_OVERFLOW_CHECK >= 2 checks each element in every pool every time
00266  *      memp_malloc() or memp_free() is called (useful but slow!)
00267  */
00268 #if !defined MEMP_OVERFLOW_CHECK || defined __DOXYGEN__
00269 #define MEMP_OVERFLOW_CHECK             0
00270 #endif
00271 
00272 /**
00273  * MEMP_SANITY_CHECK==1: run a sanity check after each memp_free() to make
00274  * sure that there are no cycles in the linked lists.
00275  */
00276 #if !defined MEMP_SANITY_CHECK || defined __DOXYGEN__
00277 #define MEMP_SANITY_CHECK               0
00278 #endif
00279 
00280 /**
00281  * MEM_USE_POOLS==1: Use an alternative to malloc() by allocating from a set
00282  * of memory pools of various sizes. When mem_malloc is called, an element of
00283  * the smallest pool that can provide the length needed is returned.
00284  * To use this, MEMP_USE_CUSTOM_POOLS also has to be enabled.
00285  */
00286 #if !defined MEM_USE_POOLS || defined __DOXYGEN__
00287 #define MEM_USE_POOLS                   0
00288 #endif
00289 
00290 /**
00291  * MEM_USE_POOLS_TRY_BIGGER_POOL==1: if one malloc-pool is empty, try the next
00292  * bigger pool - WARNING: THIS MIGHT WASTE MEMORY but it can make a system more
00293  * reliable. */
00294 #if !defined MEM_USE_POOLS_TRY_BIGGER_POOL || defined __DOXYGEN__
00295 #define MEM_USE_POOLS_TRY_BIGGER_POOL   0
00296 #endif
00297 
00298 /**
00299  * MEMP_USE_CUSTOM_POOLS==1: whether to include a user file lwippools.h
00300  * that defines additional pools beyond the "standard" ones required
00301  * by lwIP. If you set this to 1, you must have lwippools.h in your
00302  * include path somewhere.
00303  */
00304 #if !defined MEMP_USE_CUSTOM_POOLS || defined __DOXYGEN__
00305 #define MEMP_USE_CUSTOM_POOLS           0
00306 #endif
00307 
00308 /**
00309  * Set this to 1 if you want to free PBUF_RAM pbufs (or call mem_free()) from
00310  * interrupt context (or another context that doesn't allow waiting for a
00311  * semaphore).
00312  * If set to 1, mem_malloc will be protected by a semaphore and SYS_ARCH_PROTECT,
00313  * while mem_free will only use SYS_ARCH_PROTECT. mem_malloc SYS_ARCH_UNPROTECTs
00314  * with each loop so that mem_free can run.
00315  *
00316  * ATTENTION: As you can see from the above description, this leads to dis-/
00317  * enabling interrupts often, which can be slow! Also, on low memory, mem_malloc
00318  * can need longer.
00319  *
00320  * If you don't want that, at least for NO_SYS=0, you can still use the following
00321  * functions to enqueue a deallocation call which then runs in the tcpip_thread
00322  * context:
00323  * - pbuf_free_callback(p);
00324  * - mem_free_callback(m);
00325  */
00326 #if !defined LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT || defined __DOXYGEN__
00327 #define LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT 0
00328 #endif
00329 /**
00330  * @}
00331  */
00332 
00333 /*
00334    ------------------------------------------------
00335    ---------- Internal Memory Pool Sizes ----------
00336    ------------------------------------------------
00337 */
00338 /**
00339  * @defgroup lwip_opts_memp Internal memory pools
00340  * @ingroup lwip_opts_infrastructure
00341  * @{
00342  */
00343 /**
00344  * MEMP_NUM_PBUF: the number of memp struct pbufs (used for PBUF_ROM and PBUF_REF).
00345  * If the application sends a lot of data out of ROM (or other static memory),
00346  * this should be set high.
00347  */
00348 #if !defined MEMP_NUM_PBUF || defined __DOXYGEN__
00349 #define MEMP_NUM_PBUF                   16
00350 #endif
00351 
00352 /**
00353  * MEMP_NUM_RAW_PCB: Number of raw connection PCBs
00354  * (requires the LWIP_RAW option)
00355  */
00356 #if !defined MEMP_NUM_RAW_PCB || defined __DOXYGEN__
00357 #define MEMP_NUM_RAW_PCB                4
00358 #endif
00359 
00360 /**
00361  * MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
00362  * per active UDP "connection".
00363  * (requires the LWIP_UDP option)
00364  */
00365 #if !defined MEMP_NUM_UDP_PCB || defined __DOXYGEN__
00366 #define MEMP_NUM_UDP_PCB                4
00367 #endif
00368 
00369 /**
00370  * MEMP_NUM_TCP_PCB: the number of simultaneously active TCP connections.
00371  * (requires the LWIP_TCP option)
00372  */
00373 #if !defined MEMP_NUM_TCP_PCB || defined __DOXYGEN__
00374 #define MEMP_NUM_TCP_PCB                5
00375 #endif
00376 
00377 /**
00378  * MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP connections.
00379  * (requires the LWIP_TCP option)
00380  */
00381 #if !defined MEMP_NUM_TCP_PCB_LISTEN || defined __DOXYGEN__
00382 #define MEMP_NUM_TCP_PCB_LISTEN         8
00383 #endif
00384 
00385 /**
00386  * MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments.
00387  * (requires the LWIP_TCP option)
00388  */
00389 #if !defined MEMP_NUM_TCP_SEG || defined __DOXYGEN__
00390 #define MEMP_NUM_TCP_SEG                16
00391 #endif
00392 
00393 /**
00394  * MEMP_NUM_REASSDATA: the number of IP packets simultaneously queued for
00395  * reassembly (whole packets, not fragments!)
00396  */
00397 #if !defined MEMP_NUM_REASSDATA || defined __DOXYGEN__
00398 #define MEMP_NUM_REASSDATA              5
00399 #endif
00400 
00401 /**
00402  * MEMP_NUM_FRAG_PBUF: the number of IP fragments simultaneously sent
00403  * (fragments, not whole packets!).
00404  * This is only used with LWIP_NETIF_TX_SINGLE_PBUF==0 and only has to be > 1
00405  * with DMA-enabled MACs where the packet is not yet sent when netif->output
00406  * returns.
00407  */
00408 #if !defined MEMP_NUM_FRAG_PBUF || defined __DOXYGEN__
00409 #define MEMP_NUM_FRAG_PBUF              15
00410 #endif
00411 
00412 /**
00413  * MEMP_NUM_ARP_QUEUE: the number of simultaneously queued outgoing
00414  * packets (pbufs) that are waiting for an ARP request (to resolve
00415  * their destination address) to finish.
00416  * (requires the ARP_QUEUEING option)
00417  */
00418 #if !defined MEMP_NUM_ARP_QUEUE || defined __DOXYGEN__
00419 #define MEMP_NUM_ARP_QUEUE              30
00420 #endif
00421 
00422 /**
00423  * MEMP_NUM_IGMP_GROUP: The number of multicast groups whose network interfaces
00424  * can be members at the same time (one per netif - allsystems group -, plus one
00425  * per netif membership).
00426  * (requires the LWIP_IGMP option)
00427  */
00428 #if !defined MEMP_NUM_IGMP_GROUP || defined __DOXYGEN__
00429 #define MEMP_NUM_IGMP_GROUP             8
00430 #endif
00431 
00432 /**
00433  * MEMP_NUM_SYS_TIMEOUT: the number of simultaneously active timeouts.
00434  * The default number of timeouts is calculated here for all enabled modules.
00435  * The formula expects settings to be either '0' or '1'.
00436  */
00437 #if !defined MEMP_NUM_SYS_TIMEOUT || defined __DOXYGEN__
00438 #define MEMP_NUM_SYS_TIMEOUT            (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + (PPP_SUPPORT*6*MEMP_NUM_PPP_PCB) + (LWIP_IPV6 ? (1 + LWIP_IPV6_REASS + LWIP_IPV6_MLD) : 0))
00439 #endif
00440 
00441 /**
00442  * MEMP_NUM_NETBUF: the number of struct netbufs.
00443  * (only needed if you use the sequential API, like api_lib.c)
00444  */
00445 #if !defined MEMP_NUM_NETBUF || defined __DOXYGEN__
00446 #define MEMP_NUM_NETBUF                 2
00447 #endif
00448 
00449 /**
00450  * MEMP_NUM_NETCONN: the number of struct netconns.
00451  * (only needed if you use the sequential API, like api_lib.c)
00452  */
00453 #if !defined MEMP_NUM_NETCONN || defined __DOXYGEN__
00454 #define MEMP_NUM_NETCONN                4
00455 #endif
00456 
00457 /**
00458  * MEMP_NUM_TCPIP_MSG_API: the number of struct tcpip_msg, which are used
00459  * for callback/timeout API communication.
00460  * (only needed if you use tcpip.c)
00461  */
00462 #if !defined MEMP_NUM_TCPIP_MSG_API || defined __DOXYGEN__
00463 #define MEMP_NUM_TCPIP_MSG_API          8
00464 #endif
00465 
00466 /**
00467  * MEMP_NUM_TCPIP_MSG_INPKT: the number of struct tcpip_msg, which are used
00468  * for incoming packets.
00469  * (only needed if you use tcpip.c)
00470  */
00471 #if !defined MEMP_NUM_TCPIP_MSG_INPKT || defined __DOXYGEN__
00472 #define MEMP_NUM_TCPIP_MSG_INPKT        8
00473 #endif
00474 
00475 /**
00476  * MEMP_NUM_NETDB: the number of concurrently running lwip_addrinfo() calls
00477  * (before freeing the corresponding memory using lwip_freeaddrinfo()).
00478  */
00479 #if !defined MEMP_NUM_NETDB || defined __DOXYGEN__
00480 #define MEMP_NUM_NETDB                  1
00481 #endif
00482 
00483 /**
00484  * MEMP_NUM_LOCALHOSTLIST: the number of host entries in the local host list
00485  * if DNS_LOCAL_HOSTLIST_IS_DYNAMIC==1.
00486  */
00487 #if !defined MEMP_NUM_LOCALHOSTLIST || defined __DOXYGEN__
00488 #define MEMP_NUM_LOCALHOSTLIST          1
00489 #endif
00490 
00491 /**
00492  * PBUF_POOL_SIZE: the number of buffers in the pbuf pool.
00493  */
00494 #if !defined PBUF_POOL_SIZE || defined __DOXYGEN__
00495 #define PBUF_POOL_SIZE                  16
00496 #endif
00497 
00498 /** MEMP_NUM_API_MSG: the number of concurrently active calls to various
00499  * socket, netconn, and tcpip functions
00500  */
00501 #if !defined MEMP_NUM_API_MSG || defined __DOXYGEN__
00502 #define MEMP_NUM_API_MSG                MEMP_NUM_TCPIP_MSG_API
00503 #endif
00504 
00505 /** MEMP_NUM_DNS_API_MSG: the number of concurrently active calls to netconn_gethostbyname
00506  */
00507 #if !defined MEMP_NUM_DNS_API_MSG || defined __DOXYGEN__
00508 #define MEMP_NUM_DNS_API_MSG            MEMP_NUM_TCPIP_MSG_API
00509 #endif
00510 
00511 /** MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA: the number of concurrently active calls
00512  * to getsockopt/setsockopt
00513  */
00514 #if !defined MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA || defined __DOXYGEN__
00515 #define MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA MEMP_NUM_TCPIP_MSG_API
00516 #endif
00517 
00518 /** MEMP_NUM_NETIFAPI_MSG: the number of concurrently active calls to the
00519  * netifapi functions
00520  */
00521 #if !defined MEMP_NUM_NETIFAPI_MSG || defined __DOXYGEN__
00522 #define MEMP_NUM_NETIFAPI_MSG           MEMP_NUM_TCPIP_MSG_API
00523 #endif
00524 /**
00525  * @}
00526  */
00527 
00528 /*
00529    ---------------------------------
00530    ---------- ARP options ----------
00531    ---------------------------------
00532 */
00533 /**
00534  * @defgroup lwip_opts_arp ARP
00535  * @ingroup lwip_opts_ipv4
00536  * @{
00537  */
00538 /**
00539  * LWIP_ARP==1: Enable ARP functionality.
00540  */
00541 #if !defined LWIP_ARP || defined __DOXYGEN__
00542 #define LWIP_ARP                        1
00543 #endif
00544 
00545 /**
00546  * ARP_TABLE_SIZE: Number of active MAC-IP address pairs cached.
00547  */
00548 #if !defined ARP_TABLE_SIZE || defined __DOXYGEN__
00549 #define ARP_TABLE_SIZE                  10
00550 #endif
00551 
00552 /** the time an ARP entry stays valid after its last update,
00553  *  for ARP_TMR_INTERVAL = 1000, this is
00554  *  (60 * 5) seconds = 5 minutes.
00555  */
00556 #if !defined ARP_MAXAGE || defined __DOXYGEN__
00557 #define ARP_MAXAGE                      300
00558 #endif
00559 
00560 /**
00561  * ARP_QUEUEING==1: Multiple outgoing packets are queued during hardware address
00562  * resolution. By default, only the most recent packet is queued per IP address.
00563  * This is sufficient for most protocols and mainly reduces TCP connection
00564  * startup time. Set this to 1 if you know your application sends more than one
00565  * packet in a row to an IP address that is not in the ARP cache.
00566  */
00567 #if !defined ARP_QUEUEING || defined __DOXYGEN__
00568 #define ARP_QUEUEING                    0
00569 #endif
00570 
00571 /** The maximum number of packets which may be queued for each
00572  *  unresolved address by other network layers. Defaults to 3, 0 means disabled.
00573  *  Old packets are dropped, new packets are queued.
00574  */
00575 #if !defined ARP_QUEUE_LEN || defined __DOXYGEN__
00576 #define ARP_QUEUE_LEN                   3
00577 #endif
00578 
00579 /**
00580  * ETHARP_SUPPORT_VLAN==1: support receiving and sending ethernet packets with
00581  * VLAN header. See the description of LWIP_HOOK_VLAN_CHECK and
00582  * LWIP_HOOK_VLAN_SET hooks to check/set VLAN headers.
00583  * Additionally, you can define ETHARP_VLAN_CHECK to an u16_t VLAN ID to check.
00584  * If ETHARP_VLAN_CHECK is defined, only VLAN-traffic for this VLAN is accepted.
00585  * If ETHARP_VLAN_CHECK is not defined, all traffic is accepted.
00586  * Alternatively, define a function/define ETHARP_VLAN_CHECK_FN(eth_hdr, vlan)
00587  * that returns 1 to accept a packet or 0 to drop a packet.
00588  */
00589 #if !defined ETHARP_SUPPORT_VLAN || defined __DOXYGEN__
00590 #define ETHARP_SUPPORT_VLAN             0
00591 #endif
00592 
00593 /** LWIP_ETHERNET==1: enable ethernet support even though ARP might be disabled
00594  */
00595 #if !defined LWIP_ETHERNET || defined __DOXYGEN__
00596 #define LWIP_ETHERNET                   LWIP_ARP
00597 #endif
00598 
00599 /** ETH_PAD_SIZE: number of bytes added before the ethernet header to ensure
00600  * alignment of payload after that header. Since the header is 14 bytes long,
00601  * without this padding e.g. addresses in the IP header will not be aligned
00602  * on a 32-bit boundary, so setting this to 2 can speed up 32-bit-platforms.
00603  */
00604 #if !defined ETH_PAD_SIZE || defined __DOXYGEN__
00605 #define ETH_PAD_SIZE                    0
00606 #endif
00607 
00608 /** ETHARP_SUPPORT_STATIC_ENTRIES==1: enable code to support static ARP table
00609  * entries (using etharp_add_static_entry/etharp_remove_static_entry).
00610  */
00611 #if !defined ETHARP_SUPPORT_STATIC_ENTRIES || defined __DOXYGEN__
00612 #define ETHARP_SUPPORT_STATIC_ENTRIES   0
00613 #endif
00614 
00615 /** ETHARP_TABLE_MATCH_NETIF==1: Match netif for ARP table entries.
00616  * If disabled, duplicate IP address on multiple netifs are not supported
00617  * (but this should only occur for AutoIP).
00618  */
00619 #if !defined ETHARP_TABLE_MATCH_NETIF || defined __DOXYGEN__
00620 #define ETHARP_TABLE_MATCH_NETIF        0
00621 #endif
00622 /**
00623  * @}
00624  */
00625 
00626 /*
00627    --------------------------------
00628    ---------- IP options ----------
00629    --------------------------------
00630 */
00631 /**
00632  * @defgroup lwip_opts_ipv4 IPv4
00633  * @ingroup lwip_opts
00634  * @{
00635  */
00636 /**
00637  * LWIP_IPV4==1: Enable IPv4
00638  */
00639 #if !defined LWIP_IPV4 || defined __DOXYGEN__
00640 #define LWIP_IPV4                       1
00641 #endif
00642 
00643 /**
00644  * IP_FORWARD==1: Enables the ability to forward IP packets across network
00645  * interfaces. If you are going to run lwIP on a device with only one network
00646  * interface, define this to 0.
00647  */
00648 #if !defined IP_FORWARD || defined __DOXYGEN__
00649 #define IP_FORWARD                      0
00650 #endif
00651 
00652 /**
00653  * IP_REASSEMBLY==1: Reassemble incoming fragmented IP packets. Note that
00654  * this option does not affect outgoing packet sizes, which can be controlled
00655  * via IP_FRAG.
00656  */
00657 #if !defined IP_REASSEMBLY || defined __DOXYGEN__
00658 #define IP_REASSEMBLY                   1
00659 #endif
00660 
00661 /**
00662  * IP_FRAG==1: Fragment outgoing IP packets if their size exceeds MTU. Note
00663  * that this option does not affect incoming packet sizes, which can be
00664  * controlled via IP_REASSEMBLY.
00665  */
00666 #if !defined IP_FRAG || defined __DOXYGEN__
00667 #define IP_FRAG                         1
00668 #endif
00669 
00670 #if !LWIP_IPV4
00671 /* disable IPv4 extensions when IPv4 is disabled */
00672 #undef IP_FORWARD
00673 #define IP_FORWARD                      0
00674 #undef IP_REASSEMBLY
00675 #define IP_REASSEMBLY                   0
00676 #undef IP_FRAG
00677 #define IP_FRAG                         0
00678 #endif /* !LWIP_IPV4 */
00679 
00680 /**
00681  * IP_OPTIONS_ALLOWED: Defines the behavior for IP options.
00682  *      IP_OPTIONS_ALLOWED==0: All packets with IP options are dropped.
00683  *      IP_OPTIONS_ALLOWED==1: IP options are allowed (but not parsed).
00684  */
00685 #if !defined IP_OPTIONS_ALLOWED || defined __DOXYGEN__
00686 #define IP_OPTIONS_ALLOWED              1
00687 #endif
00688 
00689 /**
00690  * IP_REASS_MAXAGE: Maximum time (in multiples of IP_TMR_INTERVAL - so seconds, normally)
00691  * a fragmented IP packet waits for all fragments to arrive. If not all fragments arrived
00692  * in this time, the whole packet is discarded.
00693  */
00694 #if !defined IP_REASS_MAXAGE || defined __DOXYGEN__
00695 #define IP_REASS_MAXAGE                 3
00696 #endif
00697 
00698 /**
00699  * IP_REASS_MAX_PBUFS: Total maximum amount of pbufs waiting to be reassembled.
00700  * Since the received pbufs are enqueued, be sure to configure
00701  * PBUF_POOL_SIZE > IP_REASS_MAX_PBUFS so that the stack is still able to receive
00702  * packets even if the maximum amount of fragments is enqueued for reassembly!
00703  */
00704 #if !defined IP_REASS_MAX_PBUFS || defined __DOXYGEN__
00705 #define IP_REASS_MAX_PBUFS              10
00706 #endif
00707 
00708 /**
00709  * IP_DEFAULT_TTL: Default value for Time-To-Live used by transport layers.
00710  */
00711 #if !defined IP_DEFAULT_TTL || defined __DOXYGEN__
00712 #define IP_DEFAULT_TTL                  255
00713 #endif
00714 
00715 /**
00716  * IP_SOF_BROADCAST=1: Use the SOF_BROADCAST field to enable broadcast
00717  * filter per pcb on udp and raw send operations. To enable broadcast filter
00718  * on recv operations, you also have to set IP_SOF_BROADCAST_RECV=1.
00719  */
00720 #if !defined IP_SOF_BROADCAST || defined __DOXYGEN__
00721 #define IP_SOF_BROADCAST                0
00722 #endif
00723 
00724 /**
00725  * IP_SOF_BROADCAST_RECV (requires IP_SOF_BROADCAST=1) enable the broadcast
00726  * filter on recv operations.
00727  */
00728 #if !defined IP_SOF_BROADCAST_RECV || defined __DOXYGEN__
00729 #define IP_SOF_BROADCAST_RECV           0
00730 #endif
00731 
00732 /**
00733  * IP_FORWARD_ALLOW_TX_ON_RX_NETIF==1: allow ip_forward() to send packets back
00734  * out on the netif where it was received. This should only be used for
00735  * wireless networks.
00736  * ATTENTION: When this is 1, make sure your netif driver correctly marks incoming
00737  * link-layer-broadcast/multicast packets as such using the corresponding pbuf flags!
00738  */
00739 #if !defined IP_FORWARD_ALLOW_TX_ON_RX_NETIF || defined __DOXYGEN__
00740 #define IP_FORWARD_ALLOW_TX_ON_RX_NETIF 0
00741 #endif
00742 
00743 /**
00744  * LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS==1: randomize the local port for the first
00745  * local TCP/UDP pcb (default==0). This can prevent creating predictable port
00746  * numbers after booting a device.
00747  */
00748 #if !defined LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS || defined __DOXYGEN__
00749 #define LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS 0
00750 #endif
00751 /**
00752  * @}
00753  */
00754 
00755 /*
00756    ----------------------------------
00757    ---------- ICMP options ----------
00758    ----------------------------------
00759 */
00760 /**
00761  * @defgroup lwip_opts_icmp ICMP
00762  * @ingroup lwip_opts_ipv4
00763  * @{
00764  */
00765 /**
00766  * LWIP_ICMP==1: Enable ICMP module inside the IP stack.
00767  * Be careful, disable that make your product non-compliant to RFC1122
00768  */
00769 #if !defined LWIP_ICMP || defined __DOXYGEN__
00770 #define LWIP_ICMP                       1
00771 #endif
00772 
00773 /**
00774  * ICMP_TTL: Default value for Time-To-Live used by ICMP packets.
00775  */
00776 #if !defined ICMP_TTL || defined __DOXYGEN__
00777 #define ICMP_TTL                       (IP_DEFAULT_TTL)
00778 #endif
00779 
00780 /**
00781  * LWIP_BROADCAST_PING==1: respond to broadcast pings (default is unicast only)
00782  */
00783 #if !defined LWIP_BROADCAST_PING || defined __DOXYGEN__
00784 #define LWIP_BROADCAST_PING             0
00785 #endif
00786 
00787 /**
00788  * LWIP_MULTICAST_PING==1: respond to multicast pings (default is unicast only)
00789  */
00790 #if !defined LWIP_MULTICAST_PING || defined __DOXYGEN__
00791 #define LWIP_MULTICAST_PING             0
00792 #endif
00793 /**
00794  * @}
00795  */
00796 
00797 /*
00798    ---------------------------------
00799    ---------- RAW options ----------
00800    ---------------------------------
00801 */
00802 /**
00803  * @defgroup lwip_opts_raw RAW
00804  * @ingroup lwip_opts_callback
00805  * @{
00806  */
00807 /**
00808  * LWIP_RAW==1: Enable application layer to hook into the IP layer itself.
00809  */
00810 #if !defined LWIP_RAW || defined __DOXYGEN__
00811 #define LWIP_RAW                        0
00812 #endif
00813 
00814 /**
00815  * LWIP_RAW==1: Enable application layer to hook into the IP layer itself.
00816  */
00817 #if !defined RAW_TTL || defined __DOXYGEN__
00818 #define RAW_TTL                        (IP_DEFAULT_TTL)
00819 #endif
00820 /**
00821  * @}
00822  */
00823 
00824 /*
00825    ----------------------------------
00826    ---------- DHCP options ----------
00827    ----------------------------------
00828 */
00829 /**
00830  * @defgroup lwip_opts_dhcp DHCP
00831  * @ingroup lwip_opts_ipv4
00832  * @{
00833  */
00834 /**
00835  * LWIP_DHCP==1: Enable DHCP module.
00836  */
00837 #if !defined LWIP_DHCP || defined __DOXYGEN__
00838 #define LWIP_DHCP                       0
00839 #endif
00840 #if !LWIP_IPV4
00841 /* disable DHCP when IPv4 is disabled */
00842 #undef LWIP_DHCP
00843 #define LWIP_DHCP                       0
00844 #endif /* !LWIP_IPV4 */
00845 
00846 /**
00847  * DHCP_DOES_ARP_CHECK==1: Do an ARP check on the offered address.
00848  */
00849 #if !defined DHCP_DOES_ARP_CHECK || defined __DOXYGEN__
00850 #define DHCP_DOES_ARP_CHECK             ((LWIP_DHCP) && (LWIP_ARP))
00851 #endif
00852 
00853 /**
00854  * LWIP_DHCP_CHECK_LINK_UP==1: dhcp_start() only really starts if the netif has
00855  * NETIF_FLAG_LINK_UP set in its flags. As this is only an optimization and
00856  * netif drivers might not set this flag, the default is off. If enabled,
00857  * netif_set_link_up() must be called to continue dhcp starting.
00858  */
00859 #if !defined LWIP_DHCP_CHECK_LINK_UP
00860 #define LWIP_DHCP_CHECK_LINK_UP         0
00861 #endif
00862 
00863 /**
00864  * LWIP_DHCP_BOOTP_FILE==1: Store offered_si_addr and boot_file_name.
00865  */
00866 #if !defined LWIP_DHCP_BOOTP_FILE || defined __DOXYGEN__
00867 #define LWIP_DHCP_BOOTP_FILE            0
00868 #endif
00869 
00870 /**
00871  * LWIP_DHCP_GETS_NTP==1: Request NTP servers with discover/select. For each
00872  * response packet, an callback is called, which has to be provided by the port:
00873  * void dhcp_set_ntp_servers(u8_t num_ntp_servers, ip_addr_t* ntp_server_addrs);
00874 */
00875 #if !defined LWIP_DHCP_GET_NTP_SRV || defined __DOXYGEN__
00876 #define LWIP_DHCP_GET_NTP_SRV           0
00877 #endif
00878 
00879 /**
00880  * The maximum of NTP servers requested
00881  */
00882 #if !defined LWIP_DHCP_MAX_NTP_SERVERS || defined __DOXYGEN__
00883 #define LWIP_DHCP_MAX_NTP_SERVERS       1
00884 #endif
00885 
00886 /**
00887  * LWIP_DHCP_MAX_DNS_SERVERS > 0: Request DNS servers with discover/select.
00888  * DHCP servers received in the response are passed to DNS via @ref dns_setserver()
00889  * (up to the maximum limit defined here).
00890  */
00891 #if !defined LWIP_DHCP_MAX_DNS_SERVERS || defined __DOXYGEN__
00892 #define LWIP_DHCP_MAX_DNS_SERVERS       DNS_MAX_SERVERS
00893 #endif
00894 /**
00895  * @}
00896  */
00897 
00898 /*
00899    ------------------------------------
00900    ---------- AUTOIP options ----------
00901    ------------------------------------
00902 */
00903 /**
00904  * @defgroup lwip_opts_autoip AUTOIP
00905  * @ingroup lwip_opts_ipv4
00906  * @{
00907  */
00908 /**
00909  * LWIP_AUTOIP==1: Enable AUTOIP module.
00910  */
00911 #if !defined LWIP_AUTOIP || defined __DOXYGEN__
00912 #define LWIP_AUTOIP                     0
00913 #endif
00914 #if !LWIP_IPV4
00915 /* disable AUTOIP when IPv4 is disabled */
00916 #undef LWIP_AUTOIP
00917 #define LWIP_AUTOIP                     0
00918 #endif /* !LWIP_IPV4 */
00919 
00920 /**
00921  * LWIP_DHCP_AUTOIP_COOP==1: Allow DHCP and AUTOIP to be both enabled on
00922  * the same interface at the same time.
00923  */
00924 #if !defined LWIP_DHCP_AUTOIP_COOP || defined __DOXYGEN__
00925 #define LWIP_DHCP_AUTOIP_COOP           0
00926 #endif
00927 
00928 /**
00929  * LWIP_DHCP_AUTOIP_COOP_TRIES: Set to the number of DHCP DISCOVER probes
00930  * that should be sent before falling back on AUTOIP (the DHCP client keeps
00931  * running in this case). This can be set as low as 1 to get an AutoIP address
00932  * very  quickly, but you should be prepared to handle a changing IP address
00933  * when DHCP overrides AutoIP.
00934  */
00935 #if !defined LWIP_DHCP_AUTOIP_COOP_TRIES || defined __DOXYGEN__
00936 #define LWIP_DHCP_AUTOIP_COOP_TRIES     9
00937 #endif
00938 /**
00939  * @}
00940  */
00941 
00942 /*
00943    ----------------------------------
00944    ----- SNMP MIB2 support      -----
00945    ----------------------------------
00946 */
00947 /**
00948  * @defgroup lwip_opts_mib2 SNMP MIB2 callbacks
00949  * @ingroup lwip_opts_infrastructure
00950  * @{
00951  */
00952 /**
00953  * LWIP_MIB2_CALLBACKS==1: Turn on SNMP MIB2 callbacks.
00954  * Turn this on to get callbacks needed to implement MIB2.
00955  * Usually MIB2_STATS should be enabled, too.
00956  */
00957 #if !defined LWIP_MIB2_CALLBACKS || defined __DOXYGEN__
00958 #define LWIP_MIB2_CALLBACKS             0
00959 #endif
00960 /**
00961  * @}
00962  */
00963 
00964 /*
00965    ----------------------------------
00966    ----- Multicast/IGMP options -----
00967    ----------------------------------
00968 */
00969 /**
00970  * @defgroup lwip_opts_igmp IGMP
00971  * @ingroup lwip_opts_ipv4
00972  * @{
00973  */
00974 /**
00975  * LWIP_IGMP==1: Turn on IGMP module.
00976  */
00977 #if !defined LWIP_IGMP || defined __DOXYGEN__
00978 #define LWIP_IGMP                       0
00979 #endif
00980 #if !LWIP_IPV4
00981 #undef LWIP_IGMP
00982 #define LWIP_IGMP                       0
00983 #endif
00984 
00985 /**
00986  * LWIP_MULTICAST_TX_OPTIONS==1: Enable multicast TX support like the socket options
00987  * IP_MULTICAST_TTL/IP_MULTICAST_IF/IP_MULTICAST_LOOP
00988  */
00989 #if !defined LWIP_MULTICAST_TX_OPTIONS || defined __DOXYGEN__
00990 #define LWIP_MULTICAST_TX_OPTIONS       (LWIP_IGMP && LWIP_UDP)
00991 #endif
00992 /**
00993  * @}
00994  */
00995 
00996 /*
00997    ----------------------------------
00998    ---------- DNS options -----------
00999    ----------------------------------
01000 */
01001 /**
01002  * @defgroup lwip_opts_dns DNS
01003  * @ingroup lwip_opts_callback
01004  * @{
01005  */
01006 /**
01007  * LWIP_DNS==1: Turn on DNS module. UDP must be available for DNS
01008  * transport.
01009  */
01010 #if !defined LWIP_DNS || defined __DOXYGEN__
01011 #define LWIP_DNS                        0
01012 #endif
01013 
01014 /** DNS maximum number of entries to maintain locally. */
01015 #if !defined DNS_TABLE_SIZE || defined __DOXYGEN__
01016 #define DNS_TABLE_SIZE                  4
01017 #endif
01018 
01019 /** DNS maximum host name length supported in the name table. */
01020 #if !defined DNS_MAX_NAME_LENGTH || defined __DOXYGEN__
01021 #define DNS_MAX_NAME_LENGTH             256
01022 #endif
01023 
01024 /** The maximum of DNS servers
01025  * The first server can be initialized automatically by defining
01026  * DNS_SERVER_ADDRESS(ipaddr), where 'ipaddr' is an 'ip_addr_t*'
01027  */
01028 #if !defined DNS_MAX_SERVERS || defined __DOXYGEN__
01029 #define DNS_MAX_SERVERS                 2
01030 #endif
01031 
01032 /** DNS do a name checking between the query and the response. */
01033 #if !defined DNS_DOES_NAME_CHECK || defined __DOXYGEN__
01034 #define DNS_DOES_NAME_CHECK             1
01035 #endif
01036 
01037 /** LWIP_DNS_SECURE: controls the security level of the DNS implementation
01038  * Use all DNS security features by default.
01039  * This is overridable but should only be needed by very small targets
01040  * or when using against non standard DNS servers. */
01041 #if !defined LWIP_DNS_SECURE || defined __DOXYGEN__
01042 #define LWIP_DNS_SECURE (LWIP_DNS_SECURE_RAND_XID | LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING | LWIP_DNS_SECURE_RAND_SRC_PORT)
01043 #endif
01044 
01045 /* A list of DNS security features follows */
01046 #define LWIP_DNS_SECURE_RAND_XID                1
01047 #define LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING 2
01048 #define LWIP_DNS_SECURE_RAND_SRC_PORT           4
01049 
01050 /** DNS_LOCAL_HOSTLIST: Implements a local host-to-address list. If enabled,
01051  *  you have to define
01052  *  \#define DNS_LOCAL_HOSTLIST_INIT {{"host1", 0x123}, {"host2", 0x234}}
01053  *  (an array of structs name/address, where address is an u32_t in network
01054  *  byte order).
01055  *
01056  *  Instead, you can also use an external function:
01057  *  \#define DNS_LOOKUP_LOCAL_EXTERN(x) extern err_t my_lookup_function(const char *name, ip_addr_t *addr, u8_t dns_addrtype)
01058  *  that looks up the IP address and returns ERR_OK if found (LWIP_DNS_ADDRTYPE_xxx is passed in dns_addrtype).
01059  */
01060 #if !defined DNS_LOCAL_HOSTLIST || defined __DOXYGEN__
01061 #define DNS_LOCAL_HOSTLIST              0
01062 #endif /* DNS_LOCAL_HOSTLIST */
01063 
01064 /** If this is turned on, the local host-list can be dynamically changed
01065  *  at runtime. */
01066 #if !defined DNS_LOCAL_HOSTLIST_IS_DYNAMIC || defined __DOXYGEN__
01067 #define DNS_LOCAL_HOSTLIST_IS_DYNAMIC   0
01068 #endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */
01069 
01070 /** Set this to 1 to enable querying ".local" names via mDNS
01071  *  using a One-Shot Multicast DNS Query */
01072 #if !defined LWIP_DNS_SUPPORT_MDNS_QUERIES || defined __DOXYGEN__
01073 #define LWIP_DNS_SUPPORT_MDNS_QUERIES  0
01074 #endif
01075 /**
01076  * @}
01077  */
01078 
01079 /*
01080    ---------------------------------
01081    ---------- UDP options ----------
01082    ---------------------------------
01083 */
01084 /**
01085  * @defgroup lwip_opts_udp UDP
01086  * @ingroup lwip_opts_callback
01087  * @{
01088  */
01089 /**
01090  * LWIP_UDP==1: Turn on UDP.
01091  */
01092 #if !defined LWIP_UDP || defined __DOXYGEN__
01093 #define LWIP_UDP                        1
01094 #endif
01095 
01096 /**
01097  * LWIP_UDPLITE==1: Turn on UDP-Lite. (Requires LWIP_UDP)
01098  */
01099 #if !defined LWIP_UDPLITE || defined __DOXYGEN__
01100 #define LWIP_UDPLITE                    0
01101 #endif
01102 
01103 /**
01104  * UDP_TTL: Default Time-To-Live value.
01105  */
01106 #if !defined UDP_TTL || defined __DOXYGEN__
01107 #define UDP_TTL                         (IP_DEFAULT_TTL)
01108 #endif
01109 
01110 /**
01111  * LWIP_NETBUF_RECVINFO==1: append destination addr and port to every netbuf.
01112  */
01113 #if !defined LWIP_NETBUF_RECVINFO || defined __DOXYGEN__
01114 #define LWIP_NETBUF_RECVINFO            0
01115 #endif
01116 /**
01117  * @}
01118  */
01119 
01120 /*
01121    ---------------------------------
01122    ---------- TCP options ----------
01123    ---------------------------------
01124 */
01125 /**
01126  * @defgroup lwip_opts_tcp TCP
01127  * @ingroup lwip_opts_callback
01128  * @{
01129  */
01130 /**
01131  * LWIP_TCP==1: Turn on TCP.
01132  */
01133 #if !defined LWIP_TCP || defined __DOXYGEN__
01134 #define LWIP_TCP                        1
01135 #endif
01136 
01137 /**
01138  * TCP_TTL: Default Time-To-Live value.
01139  */
01140 #if !defined TCP_TTL || defined __DOXYGEN__
01141 #define TCP_TTL                         (IP_DEFAULT_TTL)
01142 #endif
01143 
01144 /**
01145  * TCP_WND: The size of a TCP window.  This must be at least
01146  * (2 * TCP_MSS) for things to work well.
01147  * ATTENTION: when using TCP_RCV_SCALE, TCP_WND is the total size
01148  * with scaling applied. Maximum window value in the TCP header
01149  * will be TCP_WND >> TCP_RCV_SCALE
01150  */
01151 #if !defined TCP_WND || defined __DOXYGEN__
01152 #define TCP_WND                         (4 * TCP_MSS)
01153 #endif
01154 
01155 /**
01156  * TCP_MAXRTX: Maximum number of retransmissions of data segments.
01157  */
01158 #if !defined TCP_MAXRTX || defined __DOXYGEN__
01159 #define TCP_MAXRTX                      12
01160 #endif
01161 
01162 /**
01163  * TCP_SYNMAXRTX: Maximum number of retransmissions of SYN segments.
01164  */
01165 #if !defined TCP_SYNMAXRTX || defined __DOXYGEN__
01166 #define TCP_SYNMAXRTX                   6
01167 #endif
01168 
01169 /**
01170  * TCP_QUEUE_OOSEQ==1: TCP will queue segments that arrive out of order.
01171  * Define to 0 if your device is low on memory.
01172  */
01173 #if !defined TCP_QUEUE_OOSEQ || defined __DOXYGEN__
01174 #define TCP_QUEUE_OOSEQ                 (LWIP_TCP)
01175 #endif
01176 
01177 /**
01178  * TCP_MSS: TCP Maximum segment size. (default is 536, a conservative default,
01179  * you might want to increase this.)
01180  * For the receive side, this MSS is advertised to the remote side
01181  * when opening a connection. For the transmit size, this MSS sets
01182  * an upper limit on the MSS advertised by the remote host.
01183  */
01184 #if !defined TCP_MSS || defined __DOXYGEN__
01185 #define TCP_MSS                         536
01186 #endif
01187 
01188 /**
01189  * TCP_CALCULATE_EFF_SEND_MSS: "The maximum size of a segment that TCP really
01190  * sends, the 'effective send MSS,' MUST be the smaller of the send MSS (which
01191  * reflects the available reassembly buffer size at the remote host) and the
01192  * largest size permitted by the IP layer" (RFC 1122)
01193  * Setting this to 1 enables code that checks TCP_MSS against the MTU of the
01194  * netif used for a connection and limits the MSS if it would be too big otherwise.
01195  */
01196 #if !defined TCP_CALCULATE_EFF_SEND_MSS || defined __DOXYGEN__
01197 #define TCP_CALCULATE_EFF_SEND_MSS      1
01198 #endif
01199 
01200 
01201 /**
01202  * TCP_SND_BUF: TCP sender buffer space (bytes).
01203  * To achieve good performance, this should be at least 2 * TCP_MSS.
01204  */
01205 #if !defined TCP_SND_BUF || defined __DOXYGEN__
01206 #define TCP_SND_BUF                     (2 * TCP_MSS)
01207 #endif
01208 
01209 /**
01210  * TCP_SND_QUEUELEN: TCP sender buffer space (pbufs). This must be at least
01211  * as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work.
01212  */
01213 #if !defined TCP_SND_QUEUELEN || defined __DOXYGEN__
01214 #define TCP_SND_QUEUELEN                ((4 * (TCP_SND_BUF) + (TCP_MSS - 1))/(TCP_MSS))
01215 #endif
01216 
01217 /**
01218  * TCP_SNDLOWAT: TCP writable space (bytes). This must be less than
01219  * TCP_SND_BUF. It is the amount of space which must be available in the
01220  * TCP snd_buf for select to return writable (combined with TCP_SNDQUEUELOWAT).
01221  */
01222 #if !defined TCP_SNDLOWAT || defined __DOXYGEN__
01223 #define TCP_SNDLOWAT                    LWIP_MIN(LWIP_MAX(((TCP_SND_BUF)/2), (2 * TCP_MSS) + 1), (TCP_SND_BUF) - 1)
01224 #endif
01225 
01226 /**
01227  * TCP_SNDQUEUELOWAT: TCP writable bufs (pbuf count). This must be less
01228  * than TCP_SND_QUEUELEN. If the number of pbufs queued on a pcb drops below
01229  * this number, select returns writable (combined with TCP_SNDLOWAT).
01230  */
01231 #if !defined TCP_SNDQUEUELOWAT || defined __DOXYGEN__
01232 #define TCP_SNDQUEUELOWAT               LWIP_MAX(((TCP_SND_QUEUELEN)/2), 5)
01233 #endif
01234 
01235 /**
01236  * TCP_OOSEQ_MAX_BYTES: The maximum number of bytes queued on ooseq per pcb.
01237  * Default is 0 (no limit). Only valid for TCP_QUEUE_OOSEQ==1.
01238  */
01239 #if !defined TCP_OOSEQ_MAX_BYTES || defined __DOXYGEN__
01240 #define TCP_OOSEQ_MAX_BYTES             0
01241 #endif
01242 
01243 /**
01244  * TCP_OOSEQ_MAX_PBUFS: The maximum number of pbufs queued on ooseq per pcb.
01245  * Default is 0 (no limit). Only valid for TCP_QUEUE_OOSEQ==1.
01246  */
01247 #if !defined TCP_OOSEQ_MAX_PBUFS || defined __DOXYGEN__
01248 #define TCP_OOSEQ_MAX_PBUFS             0
01249 #endif
01250 
01251 /**
01252  * TCP_LISTEN_BACKLOG: Enable the backlog option for tcp listen pcb.
01253  */
01254 #if !defined TCP_LISTEN_BACKLOG || defined __DOXYGEN__
01255 #define TCP_LISTEN_BACKLOG              0
01256 #endif
01257 
01258 /**
01259  * The maximum allowed backlog for TCP listen netconns.
01260  * This backlog is used unless another is explicitly specified.
01261  * 0xff is the maximum (u8_t).
01262  */
01263 #if !defined TCP_DEFAULT_LISTEN_BACKLOG || defined __DOXYGEN__
01264 #define TCP_DEFAULT_LISTEN_BACKLOG      0xff
01265 #endif
01266 
01267 /**
01268  * TCP_OVERSIZE: The maximum number of bytes that tcp_write may
01269  * allocate ahead of time in an attempt to create shorter pbuf chains
01270  * for transmission. The meaningful range is 0 to TCP_MSS. Some
01271  * suggested values are:
01272  *
01273  * 0:         Disable oversized allocation. Each tcp_write() allocates a new
01274               pbuf (old behaviour).
01275  * 1:         Allocate size-aligned pbufs with minimal excess. Use this if your
01276  *            scatter-gather DMA requires aligned fragments.
01277  * 128:       Limit the pbuf/memory overhead to 20%.
01278  * TCP_MSS:   Try to create unfragmented TCP packets.
01279  * TCP_MSS/4: Try to create 4 fragments or less per TCP packet.
01280  */
01281 #if !defined TCP_OVERSIZE || defined __DOXYGEN__
01282 #define TCP_OVERSIZE                    TCP_MSS
01283 #endif
01284 
01285 /**
01286  * LWIP_TCP_TIMESTAMPS==1: support the TCP timestamp option.
01287  * The timestamp option is currently only used to help remote hosts, it is not
01288  * really used locally. Therefore, it is only enabled when a TS option is
01289  * received in the initial SYN packet from a remote host.
01290  */
01291 #if !defined LWIP_TCP_TIMESTAMPS || defined __DOXYGEN__
01292 #define LWIP_TCP_TIMESTAMPS             0
01293 #endif
01294 
01295 /**
01296  * TCP_WND_UPDATE_THRESHOLD: difference in window to trigger an
01297  * explicit window update
01298  */
01299 #if !defined TCP_WND_UPDATE_THRESHOLD || defined __DOXYGEN__
01300 #define TCP_WND_UPDATE_THRESHOLD   LWIP_MIN((TCP_WND / 4), (TCP_MSS * 4))
01301 #endif
01302 
01303 /**
01304  * LWIP_EVENT_API and LWIP_CALLBACK_API: Only one of these should be set to 1.
01305  *     LWIP_EVENT_API==1: The user defines lwip_tcp_event() to receive all
01306  *         events (accept, sent, etc) that happen in the system.
01307  *     LWIP_CALLBACK_API==1: The PCB callback function is called directly
01308  *         for the event. This is the default.
01309  */
01310 #if !defined(LWIP_EVENT_API) && !defined(LWIP_CALLBACK_API) || defined __DOXYGEN__
01311 #define LWIP_EVENT_API                  0
01312 #define LWIP_CALLBACK_API               1
01313 #else
01314 #ifndef LWIP_EVENT_API
01315 #define LWIP_EVENT_API                  0
01316 #endif
01317 #ifndef LWIP_CALLBACK_API
01318 #define LWIP_CALLBACK_API               0
01319 #endif
01320 #endif
01321 
01322 /**
01323  * LWIP_WND_SCALE and TCP_RCV_SCALE:
01324  * Set LWIP_WND_SCALE to 1 to enable window scaling.
01325  * Set TCP_RCV_SCALE to the desired scaling factor (shift count in the
01326  * range of [0..14]).
01327  * When LWIP_WND_SCALE is enabled but TCP_RCV_SCALE is 0, we can use a large
01328  * send window while having a small receive window only.
01329  */
01330 #if !defined LWIP_WND_SCALE || defined __DOXYGEN__
01331 #define LWIP_WND_SCALE                  0
01332 #define TCP_RCV_SCALE                   0
01333 #endif
01334 /**
01335  * @}
01336  */
01337 
01338 /*
01339    ----------------------------------
01340    ---------- Pbuf options ----------
01341    ----------------------------------
01342 */
01343 /**
01344  * @defgroup lwip_opts_pbuf PBUF
01345  * @ingroup lwip_opts
01346  * @{
01347  */
01348 /**
01349  * PBUF_LINK_HLEN: the number of bytes that should be allocated for a
01350  * link level header. The default is 14, the standard value for
01351  * Ethernet.
01352  */
01353 #if !defined PBUF_LINK_HLEN || defined __DOXYGEN__
01354 #if defined LWIP_HOOK_VLAN_SET && !defined __DOXYGEN__
01355 #define PBUF_LINK_HLEN                  (18 + ETH_PAD_SIZE)
01356 #else /* LWIP_HOOK_VLAN_SET */
01357 #define PBUF_LINK_HLEN                  (14 + ETH_PAD_SIZE)
01358 #endif /* LWIP_HOOK_VLAN_SET */
01359 #endif
01360 
01361 /**
01362  * PBUF_LINK_ENCAPSULATION_HLEN: the number of bytes that should be allocated
01363  * for an additional encapsulation header before ethernet headers (e.g. 802.11)
01364  */
01365 #if !defined PBUF_LINK_ENCAPSULATION_HLEN || defined __DOXYGEN__
01366 #define PBUF_LINK_ENCAPSULATION_HLEN    0u
01367 #endif
01368 
01369 /**
01370  * PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. The default is
01371  * designed to accommodate single full size TCP frame in one pbuf, including
01372  * TCP_MSS, IP header, and link header.
01373  */
01374 #if !defined PBUF_POOL_BUFSIZE || defined __DOXYGEN__
01375 #define PBUF_POOL_BUFSIZE               LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_ENCAPSULATION_HLEN+PBUF_LINK_HLEN)
01376 #endif
01377 /**
01378  * @}
01379  */
01380 
01381 /*
01382    ------------------------------------------------
01383    ---------- Network Interfaces options ----------
01384    ------------------------------------------------
01385 */
01386 /**
01387  * @defgroup lwip_opts_netif NETIF
01388  * @ingroup lwip_opts
01389  * @{
01390  */
01391 /**
01392  * LWIP_NETIF_HOSTNAME==1: use DHCP_OPTION_HOSTNAME with netif's hostname
01393  * field.
01394  */
01395 #if !defined LWIP_NETIF_HOSTNAME || defined __DOXYGEN__
01396 #define LWIP_NETIF_HOSTNAME             0
01397 #endif
01398 
01399 /**
01400  * LWIP_NETIF_API==1: Support netif api (in netifapi.c)
01401  */
01402 #if !defined LWIP_NETIF_API || defined __DOXYGEN__
01403 #define LWIP_NETIF_API                  0
01404 #endif
01405 
01406 /**
01407  * LWIP_NETIF_STATUS_CALLBACK==1: Support a callback function whenever an interface
01408  * changes its up/down status (i.e., due to DHCP IP acquisition)
01409  */
01410 #if !defined LWIP_NETIF_STATUS_CALLBACK || defined __DOXYGEN__
01411 #define LWIP_NETIF_STATUS_CALLBACK      0
01412 #endif
01413 
01414 /**
01415  * LWIP_NETIF_LINK_CALLBACK==1: Support a callback function from an interface
01416  * whenever the link changes (i.e., link down)
01417  */
01418 #if !defined LWIP_NETIF_LINK_CALLBACK || defined __DOXYGEN__
01419 #define LWIP_NETIF_LINK_CALLBACK        0
01420 #endif
01421 
01422 /**
01423  * LWIP_NETIF_REMOVE_CALLBACK==1: Support a callback function that is called
01424  * when a netif has been removed
01425  */
01426 #if !defined LWIP_NETIF_REMOVE_CALLBACK || defined __DOXYGEN__
01427 #define LWIP_NETIF_REMOVE_CALLBACK      0
01428 #endif
01429 
01430 /**
01431  * LWIP_NETIF_HWADDRHINT==1: Cache link-layer-address hints (e.g. table
01432  * indices) in struct netif. TCP and UDP can make use of this to prevent
01433  * scanning the ARP table for every sent packet. While this is faster for big
01434  * ARP tables or many concurrent connections, it might be counterproductive
01435  * if you have a tiny ARP table or if there never are concurrent connections.
01436  */
01437 #if !defined LWIP_NETIF_HWADDRHINT || defined __DOXYGEN__
01438 #define LWIP_NETIF_HWADDRHINT           0
01439 #endif
01440 
01441 /**
01442  * LWIP_NETIF_TX_SINGLE_PBUF: if this is set to 1, lwIP tries to put all data
01443  * to be sent into one single pbuf. This is for compatibility with DMA-enabled
01444  * MACs that do not support scatter-gather.
01445  * Beware that this might involve CPU-memcpy before transmitting that would not
01446  * be needed without this flag! Use this only if you need to!
01447  *
01448  * @todo: TCP and IP-frag do not work with this, yet:
01449  */
01450 #if !defined LWIP_NETIF_TX_SINGLE_PBUF || defined __DOXYGEN__
01451 #define LWIP_NETIF_TX_SINGLE_PBUF             0
01452 #endif /* LWIP_NETIF_TX_SINGLE_PBUF */
01453 
01454 /**
01455  * LWIP_NUM_NETIF_CLIENT_DATA: Number of clients that may store
01456  * data in client_data member array of struct netif.
01457  */
01458 #if !defined LWIP_NUM_NETIF_CLIENT_DATA || defined __DOXYGEN__
01459 #define LWIP_NUM_NETIF_CLIENT_DATA            0
01460 #endif
01461 /**
01462  * @}
01463  */
01464 
01465 /*
01466    ------------------------------------
01467    ---------- LOOPIF options ----------
01468    ------------------------------------
01469 */
01470 /**
01471  * @defgroup lwip_opts_loop Loopback interface
01472  * @ingroup lwip_opts_netif
01473  * @{
01474  */
01475 /**
01476  * LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1).
01477  * This is only needed when no real netifs are available. If at least one other
01478  * netif is available, loopback traffic uses this netif.
01479  */
01480 #if !defined LWIP_HAVE_LOOPIF || defined __DOXYGEN__
01481 #define LWIP_HAVE_LOOPIF                LWIP_NETIF_LOOPBACK
01482 #endif
01483 
01484 /**
01485  * LWIP_LOOPIF_MULTICAST==1: Support multicast/IGMP on loop interface (127.0.0.1).
01486  */
01487 #if !defined LWIP_LOOPIF_MULTICAST || defined __DOXYGEN__
01488 #define LWIP_LOOPIF_MULTICAST               0
01489 #endif
01490 
01491 /**
01492  * LWIP_NETIF_LOOPBACK==1: Support sending packets with a destination IP
01493  * address equal to the netif IP address, looping them back up the stack.
01494  */
01495 #if !defined LWIP_NETIF_LOOPBACK || defined __DOXYGEN__
01496 #define LWIP_NETIF_LOOPBACK             0
01497 #endif
01498 
01499 /**
01500  * LWIP_LOOPBACK_MAX_PBUFS: Maximum number of pbufs on queue for loopback
01501  * sending for each netif (0 = disabled)
01502  */
01503 #if !defined LWIP_LOOPBACK_MAX_PBUFS || defined __DOXYGEN__
01504 #define LWIP_LOOPBACK_MAX_PBUFS         0
01505 #endif
01506 
01507 /**
01508  * LWIP_NETIF_LOOPBACK_MULTITHREADING: Indicates whether threading is enabled in
01509  * the system, as netifs must change how they behave depending on this setting
01510  * for the LWIP_NETIF_LOOPBACK option to work.
01511  * Setting this is needed to avoid reentering non-reentrant functions like
01512  * tcp_input().
01513  *    LWIP_NETIF_LOOPBACK_MULTITHREADING==1: Indicates that the user is using a
01514  *       multithreaded environment like tcpip.c. In this case, netif->input()
01515  *       is called directly.
01516  *    LWIP_NETIF_LOOPBACK_MULTITHREADING==0: Indicates a polling (or NO_SYS) setup.
01517  *       The packets are put on a list and netif_poll() must be called in
01518  *       the main application loop.
01519  */
01520 #if !defined LWIP_NETIF_LOOPBACK_MULTITHREADING || defined __DOXYGEN__
01521 #define LWIP_NETIF_LOOPBACK_MULTITHREADING    (!NO_SYS)
01522 #endif
01523 /**
01524  * @}
01525  */
01526 
01527 /*
01528    ------------------------------------
01529    ---------- Thread options ----------
01530    ------------------------------------
01531 */
01532 /**
01533  * @defgroup lwip_opts_thread Threading
01534  * @ingroup lwip_opts_infrastructure
01535  * @{
01536  */
01537 /**
01538  * TCPIP_THREAD_NAME: The name assigned to the main tcpip thread.
01539  */
01540 #if !defined TCPIP_THREAD_NAME || defined __DOXYGEN__
01541 #define TCPIP_THREAD_NAME              "tcpip_thread"
01542 #endif
01543 
01544 /**
01545  * TCPIP_THREAD_STACKSIZE: The stack size used by the main tcpip thread.
01546  * The stack size value itself is platform-dependent, but is passed to
01547  * sys_thread_new() when the thread is created.
01548  */
01549 #if !defined TCPIP_THREAD_STACKSIZE || defined __DOXYGEN__
01550 #define TCPIP_THREAD_STACKSIZE          0
01551 #endif
01552 
01553 /**
01554  * TCPIP_THREAD_PRIO: The priority assigned to the main tcpip thread.
01555  * The priority value itself is platform-dependent, but is passed to
01556  * sys_thread_new() when the thread is created.
01557  */
01558 #if !defined TCPIP_THREAD_PRIO || defined __DOXYGEN__
01559 #define TCPIP_THREAD_PRIO               1
01560 #endif
01561 
01562 /**
01563  * TCPIP_MBOX_SIZE: The mailbox size for the tcpip thread messages
01564  * The queue size value itself is platform-dependent, but is passed to
01565  * sys_mbox_new() when tcpip_init is called.
01566  */
01567 #if !defined TCPIP_MBOX_SIZE || defined __DOXYGEN__
01568 #define TCPIP_MBOX_SIZE                 0
01569 #endif
01570 
01571 /**
01572  * Define this to something that triggers a watchdog. This is called from
01573  * tcpip_thread after processing a message.
01574  */
01575 #if !defined LWIP_TCPIP_THREAD_ALIVE || defined __DOXYGEN__
01576 #define LWIP_TCPIP_THREAD_ALIVE()
01577 #endif
01578 
01579 /**
01580  * SLIPIF_THREAD_NAME: The name assigned to the slipif_loop thread.
01581  */
01582 #if !defined SLIPIF_THREAD_NAME || defined __DOXYGEN__
01583 #define SLIPIF_THREAD_NAME             "slipif_loop"
01584 #endif
01585 
01586 /**
01587  * SLIP_THREAD_STACKSIZE: The stack size used by the slipif_loop thread.
01588  * The stack size value itself is platform-dependent, but is passed to
01589  * sys_thread_new() when the thread is created.
01590  */
01591 #if !defined SLIPIF_THREAD_STACKSIZE || defined __DOXYGEN__
01592 #define SLIPIF_THREAD_STACKSIZE         0
01593 #endif
01594 
01595 /**
01596  * SLIPIF_THREAD_PRIO: The priority assigned to the slipif_loop thread.
01597  * The priority value itself is platform-dependent, but is passed to
01598  * sys_thread_new() when the thread is created.
01599  */
01600 #if !defined SLIPIF_THREAD_PRIO || defined __DOXYGEN__
01601 #define SLIPIF_THREAD_PRIO              1
01602 #endif
01603 
01604 /**
01605  * DEFAULT_THREAD_NAME: The name assigned to any other lwIP thread.
01606  */
01607 #if !defined DEFAULT_THREAD_NAME || defined __DOXYGEN__
01608 #define DEFAULT_THREAD_NAME            "lwIP"
01609 #endif
01610 
01611 /**
01612  * DEFAULT_THREAD_STACKSIZE: The stack size used by any other lwIP thread.
01613  * The stack size value itself is platform-dependent, but is passed to
01614  * sys_thread_new() when the thread is created.
01615  */
01616 #if !defined DEFAULT_THREAD_STACKSIZE || defined __DOXYGEN__
01617 #define DEFAULT_THREAD_STACKSIZE        0
01618 #endif
01619 
01620 /**
01621  * DEFAULT_THREAD_PRIO: The priority assigned to any other lwIP thread.
01622  * The priority value itself is platform-dependent, but is passed to
01623  * sys_thread_new() when the thread is created.
01624  */
01625 #if !defined DEFAULT_THREAD_PRIO || defined __DOXYGEN__
01626 #define DEFAULT_THREAD_PRIO             1
01627 #endif
01628 
01629 /**
01630  * DEFAULT_RAW_RECVMBOX_SIZE: The mailbox size for the incoming packets on a
01631  * NETCONN_RAW. The queue size value itself is platform-dependent, but is passed
01632  * to sys_mbox_new() when the recvmbox is created.
01633  */
01634 #if !defined DEFAULT_RAW_RECVMBOX_SIZE || defined __DOXYGEN__
01635 #define DEFAULT_RAW_RECVMBOX_SIZE       0
01636 #endif
01637 
01638 /**
01639  * DEFAULT_UDP_RECVMBOX_SIZE: The mailbox size for the incoming packets on a
01640  * NETCONN_UDP. The queue size value itself is platform-dependent, but is passed
01641  * to sys_mbox_new() when the recvmbox is created.
01642  */
01643 #if !defined DEFAULT_UDP_RECVMBOX_SIZE || defined __DOXYGEN__
01644 #define DEFAULT_UDP_RECVMBOX_SIZE       0
01645 #endif
01646 
01647 /**
01648  * DEFAULT_TCP_RECVMBOX_SIZE: The mailbox size for the incoming packets on a
01649  * NETCONN_TCP. The queue size value itself is platform-dependent, but is passed
01650  * to sys_mbox_new() when the recvmbox is created.
01651  */
01652 #if !defined DEFAULT_TCP_RECVMBOX_SIZE || defined __DOXYGEN__
01653 #define DEFAULT_TCP_RECVMBOX_SIZE       0
01654 #endif
01655 
01656 /**
01657  * DEFAULT_ACCEPTMBOX_SIZE: The mailbox size for the incoming connections.
01658  * The queue size value itself is platform-dependent, but is passed to
01659  * sys_mbox_new() when the acceptmbox is created.
01660  */
01661 #if !defined DEFAULT_ACCEPTMBOX_SIZE || defined __DOXYGEN__
01662 #define DEFAULT_ACCEPTMBOX_SIZE         0
01663 #endif
01664 /**
01665  * @}
01666  */
01667 
01668 /*
01669    ----------------------------------------------
01670    ---------- Sequential layer options ----------
01671    ----------------------------------------------
01672 */
01673 /**
01674  * @defgroup lwip_opts_netconn Netconn
01675  * @ingroup lwip_opts_threadsafe_apis
01676  * @{
01677  */
01678 /**
01679  * LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c)
01680  */
01681 #if !defined LWIP_NETCONN || defined __DOXYGEN__
01682 #define LWIP_NETCONN                    1
01683 #endif
01684 
01685 /** LWIP_TCPIP_TIMEOUT==1: Enable tcpip_timeout/tcpip_untimeout to create
01686  * timers running in tcpip_thread from another thread.
01687  */
01688 #if !defined LWIP_TCPIP_TIMEOUT || defined __DOXYGEN__
01689 #define LWIP_TCPIP_TIMEOUT              0
01690 #endif
01691 
01692 /** LWIP_NETCONN_SEM_PER_THREAD==1: Use one (thread-local) semaphore per
01693  * thread calling socket/netconn functions instead of allocating one
01694  * semaphore per netconn (and per select etc.)
01695  * ATTENTION: a thread-local semaphore for API calls is needed:
01696  * - LWIP_NETCONN_THREAD_SEM_GET() returning a sys_sem_t*
01697  * - LWIP_NETCONN_THREAD_SEM_ALLOC() creating the semaphore
01698  * - LWIP_NETCONN_THREAD_SEM_FREE() freeing the semaphore
01699  * The latter 2 can be invoked up by calling netconn_thread_init()/netconn_thread_cleanup().
01700  * Ports may call these for threads created with sys_thread_new().
01701  */
01702 #if !defined LWIP_NETCONN_SEM_PER_THREAD || defined __DOXYGEN__
01703 #define LWIP_NETCONN_SEM_PER_THREAD     0
01704 #endif
01705 
01706 /** LWIP_NETCONN_FULLDUPLEX==1: Enable code that allows reading from one thread,
01707  * writing from a 2nd thread and closing from a 3rd thread at the same time.
01708  * ATTENTION: This is currently really alpha! Some requirements:
01709  * - LWIP_NETCONN_SEM_PER_THREAD==1 is required to use one socket/netconn from
01710  *   multiple threads at once
01711  * - sys_mbox_free() has to unblock receive tasks waiting on recvmbox/acceptmbox
01712  *   and prevent a task pending on this during/after deletion
01713  */
01714 #if !defined LWIP_NETCONN_FULLDUPLEX || defined __DOXYGEN__
01715 #define LWIP_NETCONN_FULLDUPLEX         0
01716 #endif
01717 /**
01718  * @}
01719  */
01720 
01721 /*
01722    ------------------------------------
01723    ---------- Socket options ----------
01724    ------------------------------------
01725 */
01726 /**
01727  * @defgroup lwip_opts_socket Sockets
01728  * @ingroup lwip_opts_threadsafe_apis
01729  * @{
01730  */
01731 /**
01732  * LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)
01733  */
01734 #if !defined LWIP_SOCKET || defined __DOXYGEN__
01735 #define LWIP_SOCKET                     1
01736 #endif
01737 
01738 /* LWIP_SOCKET_SET_ERRNO==1: Set errno when socket functions cannot complete
01739  * successfully, as required by POSIX. Default is POSIX-compliant.
01740  */
01741 #if !defined LWIP_SOCKET_SET_ERRNO || defined __DOXYGEN__
01742 #define LWIP_SOCKET_SET_ERRNO           1
01743 #endif
01744 
01745 /**
01746  * LWIP_COMPAT_SOCKETS==1: Enable BSD-style sockets functions names through defines.
01747  * LWIP_COMPAT_SOCKETS==2: Same as ==1 but correctly named functions are created.
01748  * While this helps code completion, it might conflict with existing libraries.
01749  * (only used if you use sockets.c)
01750  */
01751 #if !defined LWIP_COMPAT_SOCKETS || defined __DOXYGEN__
01752 #define LWIP_COMPAT_SOCKETS             1
01753 #endif
01754 
01755 /**
01756  * LWIP_POSIX_SOCKETS_IO_NAMES==1: Enable POSIX-style sockets functions names.
01757  * Disable this option if you use a POSIX operating system that uses the same
01758  * names (read, write & close). (only used if you use sockets.c)
01759  */
01760 #if !defined LWIP_POSIX_SOCKETS_IO_NAMES || defined __DOXYGEN__
01761 #define LWIP_POSIX_SOCKETS_IO_NAMES     1
01762 #endif
01763 
01764 /**
01765  * LWIP_SOCKET_OFFSET==n: Increases the file descriptor number created by LwIP with n.
01766  * This can be useful when there are multiple APIs which create file descriptors.
01767  * When they all start with a different offset and you won't make them overlap you can
01768  * re implement read/write/close/ioctl/fnctl to send the requested action to the right
01769  * library (sharing select will need more work though).
01770  */
01771 #if !defined LWIP_SOCKET_OFFSET || defined __DOXYGEN__
01772 #define LWIP_SOCKET_OFFSET              0
01773 #endif
01774 
01775 /**
01776  * LWIP_TCP_KEEPALIVE==1: Enable TCP_KEEPIDLE, TCP_KEEPINTVL and TCP_KEEPCNT
01777  * options processing. Note that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set
01778  * in seconds. (does not require sockets.c, and will affect tcp.c)
01779  */
01780 #if !defined LWIP_TCP_KEEPALIVE || defined __DOXYGEN__
01781 #define LWIP_TCP_KEEPALIVE              0
01782 #endif
01783 
01784 /**
01785  * LWIP_SO_SNDTIMEO==1: Enable send timeout for sockets/netconns and
01786  * SO_SNDTIMEO processing.
01787  */
01788 #if !defined LWIP_SO_SNDTIMEO || defined __DOXYGEN__
01789 #define LWIP_SO_SNDTIMEO                0
01790 #endif
01791 
01792 /**
01793  * LWIP_SO_RCVTIMEO==1: Enable receive timeout for sockets/netconns and
01794  * SO_RCVTIMEO processing.
01795  */
01796 #if !defined LWIP_SO_RCVTIMEO || defined __DOXYGEN__
01797 #define LWIP_SO_RCVTIMEO                0
01798 #endif
01799 
01800 /**
01801  * LWIP_SO_SNDRCVTIMEO_NONSTANDARD==1: SO_RCVTIMEO/SO_SNDTIMEO take an int
01802  * (milliseconds, much like winsock does) instead of a struct timeval (default).
01803  */
01804 #if !defined LWIP_SO_SNDRCVTIMEO_NONSTANDARD || defined __DOXYGEN__
01805 #define LWIP_SO_SNDRCVTIMEO_NONSTANDARD 0
01806 #endif
01807 
01808 /**
01809  * LWIP_SO_RCVBUF==1: Enable SO_RCVBUF processing.
01810  */
01811 #if !defined LWIP_SO_RCVBUF || defined __DOXYGEN__
01812 #define LWIP_SO_RCVBUF                  0
01813 #endif
01814 
01815 /**
01816  * LWIP_SO_LINGER==1: Enable SO_LINGER processing.
01817  */
01818 #if !defined LWIP_SO_LINGER || defined __DOXYGEN__
01819 #define LWIP_SO_LINGER                  0
01820 #endif
01821 
01822 /**
01823  * If LWIP_SO_RCVBUF is used, this is the default value for recv_bufsize.
01824  */
01825 #if !defined RECV_BUFSIZE_DEFAULT || defined __DOXYGEN__
01826 #define RECV_BUFSIZE_DEFAULT            INT_MAX
01827 #endif
01828 
01829 /**
01830  * By default, TCP socket/netconn close waits 20 seconds max to send the FIN
01831  */
01832 #if !defined LWIP_TCP_CLOSE_TIMEOUT_MS_DEFAULT || defined __DOXYGEN__
01833 #define LWIP_TCP_CLOSE_TIMEOUT_MS_DEFAULT 20000
01834 #endif
01835 
01836 /**
01837  * SO_REUSE==1: Enable SO_REUSEADDR option.
01838  */
01839 #if !defined SO_REUSE || defined __DOXYGEN__
01840 #define SO_REUSE                        0
01841 #endif
01842 
01843 /**
01844  * SO_REUSE_RXTOALL==1: Pass a copy of incoming broadcast/multicast packets
01845  * to all local matches if SO_REUSEADDR is turned on.
01846  * WARNING: Adds a memcpy for every packet if passing to more than one pcb!
01847  */
01848 #if !defined SO_REUSE_RXTOALL || defined __DOXYGEN__
01849 #define SO_REUSE_RXTOALL                0
01850 #endif
01851 
01852 /**
01853  * LWIP_FIONREAD_LINUXMODE==0 (default): ioctl/FIONREAD returns the amount of
01854  * pending data in the network buffer. This is the way windows does it. It's
01855  * the default for lwIP since it is smaller.
01856  * LWIP_FIONREAD_LINUXMODE==1: ioctl/FIONREAD returns the size of the next
01857  * pending datagram in bytes. This is the way linux does it. This code is only
01858  * here for compatibility.
01859  */
01860 #if !defined LWIP_FIONREAD_LINUXMODE || defined __DOXYGEN__
01861 #define LWIP_FIONREAD_LINUXMODE         0
01862 #endif
01863 /**
01864  * @}
01865  */
01866 
01867 /*
01868    ----------------------------------------
01869    ---------- Statistics options ----------
01870    ----------------------------------------
01871 */
01872 /**
01873  * @defgroup lwip_opts_stats Statistics
01874  * @ingroup lwip_opts_debug
01875  * @{
01876  */
01877 /**
01878  * LWIP_STATS==1: Enable statistics collection in lwip_stats.
01879  */
01880 #if !defined LWIP_STATS || defined __DOXYGEN__
01881 #define LWIP_STATS                      1
01882 #endif
01883 
01884 #if LWIP_STATS
01885 
01886 /**
01887  * LWIP_STATS_DISPLAY==1: Compile in the statistics output functions.
01888  */
01889 #if !defined LWIP_STATS_DISPLAY || defined __DOXYGEN__
01890 #define LWIP_STATS_DISPLAY              0
01891 #endif
01892 
01893 /**
01894  * LINK_STATS==1: Enable link stats.
01895  */
01896 #if !defined LINK_STATS || defined __DOXYGEN__
01897 #define LINK_STATS                      1
01898 #endif
01899 
01900 /**
01901  * ETHARP_STATS==1: Enable etharp stats.
01902  */
01903 #if !defined ETHARP_STATS || defined __DOXYGEN__
01904 #define ETHARP_STATS                    (LWIP_ARP)
01905 #endif
01906 
01907 /**
01908  * IP_STATS==1: Enable IP stats.
01909  */
01910 #if !defined IP_STATS || defined __DOXYGEN__
01911 #define IP_STATS                        1
01912 #endif
01913 
01914 /**
01915  * IPFRAG_STATS==1: Enable IP fragmentation stats. Default is
01916  * on if using either frag or reass.
01917  */
01918 #if !defined IPFRAG_STATS || defined __DOXYGEN__
01919 #define IPFRAG_STATS                    (IP_REASSEMBLY || IP_FRAG)
01920 #endif
01921 
01922 /**
01923  * ICMP_STATS==1: Enable ICMP stats.
01924  */
01925 #if !defined ICMP_STATS || defined __DOXYGEN__
01926 #define ICMP_STATS                      1
01927 #endif
01928 
01929 /**
01930  * IGMP_STATS==1: Enable IGMP stats.
01931  */
01932 #if !defined IGMP_STATS || defined __DOXYGEN__
01933 #define IGMP_STATS                      (LWIP_IGMP)
01934 #endif
01935 
01936 /**
01937  * UDP_STATS==1: Enable UDP stats. Default is on if
01938  * UDP enabled, otherwise off.
01939  */
01940 #if !defined UDP_STATS || defined __DOXYGEN__
01941 #define UDP_STATS                       (LWIP_UDP)
01942 #endif
01943 
01944 /**
01945  * TCP_STATS==1: Enable TCP stats. Default is on if TCP
01946  * enabled, otherwise off.
01947  */
01948 #if !defined TCP_STATS || defined __DOXYGEN__
01949 #define TCP_STATS                       (LWIP_TCP)
01950 #endif
01951 
01952 /**
01953  * MEM_STATS==1: Enable mem.c stats.
01954  */
01955 #if !defined MEM_STATS || defined __DOXYGEN__
01956 #define MEM_STATS                       ((MEM_LIBC_MALLOC == 0) && (MEM_USE_POOLS == 0))
01957 #endif
01958 
01959 /**
01960  * MEMP_STATS==1: Enable memp.c pool stats.
01961  */
01962 #if !defined MEMP_STATS || defined __DOXYGEN__
01963 #define MEMP_STATS                      (MEMP_MEM_MALLOC == 0)
01964 #endif
01965 
01966 /**
01967  * SYS_STATS==1: Enable system stats (sem and mbox counts, etc).
01968  */
01969 #if !defined SYS_STATS || defined __DOXYGEN__
01970 #define SYS_STATS                       (NO_SYS == 0)
01971 #endif
01972 
01973 /**
01974  * IP6_STATS==1: Enable IPv6 stats.
01975  */
01976 #if !defined IP6_STATS || defined __DOXYGEN__
01977 #define IP6_STATS                       (LWIP_IPV6)
01978 #endif
01979 
01980 /**
01981  * ICMP6_STATS==1: Enable ICMP for IPv6 stats.
01982  */
01983 #if !defined ICMP6_STATS || defined __DOXYGEN__
01984 #define ICMP6_STATS                     (LWIP_IPV6 && LWIP_ICMP6)
01985 #endif
01986 
01987 /**
01988  * IP6_FRAG_STATS==1: Enable IPv6 fragmentation stats.
01989  */
01990 #if !defined IP6_FRAG_STATS || defined __DOXYGEN__
01991 #define IP6_FRAG_STATS                  (LWIP_IPV6 && (LWIP_IPV6_FRAG || LWIP_IPV6_REASS))
01992 #endif
01993 
01994 /**
01995  * MLD6_STATS==1: Enable MLD for IPv6 stats.
01996  */
01997 #if !defined MLD6_STATS || defined __DOXYGEN__
01998 #define MLD6_STATS                      (LWIP_IPV6 && LWIP_IPV6_MLD)
01999 #endif
02000 
02001 /**
02002  * ND6_STATS==1: Enable Neighbor discovery for IPv6 stats.
02003  */
02004 #if !defined ND6_STATS || defined __DOXYGEN__
02005 #define ND6_STATS                       (LWIP_IPV6)
02006 #endif
02007 
02008 /**
02009  * MIB2_STATS==1: Stats for SNMP MIB2.
02010  */
02011 #if !defined MIB2_STATS || defined __DOXYGEN__
02012 #define MIB2_STATS                      0
02013 #endif
02014 
02015 #else
02016 
02017 #define LINK_STATS                      0
02018 #define ETHARP_STATS                    0
02019 #define IP_STATS                        0
02020 #define IPFRAG_STATS                    0
02021 #define ICMP_STATS                      0
02022 #define IGMP_STATS                      0
02023 #define UDP_STATS                       0
02024 #define TCP_STATS                       0
02025 #define MEM_STATS                       0
02026 #define MEMP_STATS                      0
02027 #define SYS_STATS                       0
02028 #define LWIP_STATS_DISPLAY              0
02029 #define IP6_STATS                       0
02030 #define ICMP6_STATS                     0
02031 #define IP6_FRAG_STATS                  0
02032 #define MLD6_STATS                      0
02033 #define ND6_STATS                       0
02034 #define MIB2_STATS                      0
02035 
02036 #endif /* LWIP_STATS */
02037 /**
02038  * @}
02039  */
02040 
02041 /*
02042    --------------------------------------
02043    ---------- Checksum options ----------
02044    --------------------------------------
02045 */
02046 /**
02047  * @defgroup lwip_opts_checksum Checksum
02048  * @ingroup lwip_opts_infrastructure
02049  * @{
02050  */
02051 /**
02052  * LWIP_CHECKSUM_CTRL_PER_NETIF==1: Checksum generation/check can be enabled/disabled
02053  * per netif.
02054  * ATTENTION: if enabled, the CHECKSUM_GEN_* and CHECKSUM_CHECK_* defines must be enabled!
02055  */
02056 #if !defined LWIP_CHECKSUM_CTRL_PER_NETIF || defined __DOXYGEN__
02057 #define LWIP_CHECKSUM_CTRL_PER_NETIF    0
02058 #endif
02059 
02060 /**
02061  * CHECKSUM_GEN_IP==1: Generate checksums in software for outgoing IP packets.
02062  */
02063 #if !defined CHECKSUM_GEN_IP || defined __DOXYGEN__
02064 #define CHECKSUM_GEN_IP                 1
02065 #endif
02066 
02067 /**
02068  * CHECKSUM_GEN_UDP==1: Generate checksums in software for outgoing UDP packets.
02069  */
02070 #if !defined CHECKSUM_GEN_UDP || defined __DOXYGEN__
02071 #define CHECKSUM_GEN_UDP                1
02072 #endif
02073 
02074 /**
02075  * CHECKSUM_GEN_TCP==1: Generate checksums in software for outgoing TCP packets.
02076  */
02077 #if !defined CHECKSUM_GEN_TCP || defined __DOXYGEN__
02078 #define CHECKSUM_GEN_TCP                1
02079 #endif
02080 
02081 /**
02082  * CHECKSUM_GEN_ICMP==1: Generate checksums in software for outgoing ICMP packets.
02083  */
02084 #if !defined CHECKSUM_GEN_ICMP || defined __DOXYGEN__
02085 #define CHECKSUM_GEN_ICMP               1
02086 #endif
02087 
02088 /**
02089  * CHECKSUM_GEN_ICMP6==1: Generate checksums in software for outgoing ICMP6 packets.
02090  */
02091 #if !defined CHECKSUM_GEN_ICMP6 || defined __DOXYGEN__
02092 #define CHECKSUM_GEN_ICMP6              1
02093 #endif
02094 
02095 /**
02096  * CHECKSUM_CHECK_IP==1: Check checksums in software for incoming IP packets.
02097  */
02098 #if !defined CHECKSUM_CHECK_IP || defined __DOXYGEN__
02099 #define CHECKSUM_CHECK_IP               1
02100 #endif
02101 
02102 /**
02103  * CHECKSUM_CHECK_UDP==1: Check checksums in software for incoming UDP packets.
02104  */
02105 #if !defined CHECKSUM_CHECK_UDP || defined __DOXYGEN__
02106 #define CHECKSUM_CHECK_UDP              1
02107 #endif
02108 
02109 /**
02110  * CHECKSUM_CHECK_TCP==1: Check checksums in software for incoming TCP packets.
02111  */
02112 #if !defined CHECKSUM_CHECK_TCP || defined __DOXYGEN__
02113 #define CHECKSUM_CHECK_TCP              1
02114 #endif
02115 
02116 /**
02117  * CHECKSUM_CHECK_ICMP==1: Check checksums in software for incoming ICMP packets.
02118  */
02119 #if !defined CHECKSUM_CHECK_ICMP || defined __DOXYGEN__
02120 #define CHECKSUM_CHECK_ICMP             1
02121 #endif
02122 
02123 /**
02124  * CHECKSUM_CHECK_ICMP6==1: Check checksums in software for incoming ICMPv6 packets
02125  */
02126 #if !defined CHECKSUM_CHECK_ICMP6 || defined __DOXYGEN__
02127 #define CHECKSUM_CHECK_ICMP6            1
02128 #endif
02129 
02130 /**
02131  * LWIP_CHECKSUM_ON_COPY==1: Calculate checksum when copying data from
02132  * application buffers to pbufs.
02133  */
02134 #if !defined LWIP_CHECKSUM_ON_COPY || defined __DOXYGEN__
02135 #define LWIP_CHECKSUM_ON_COPY           0
02136 #endif
02137 /**
02138  * @}
02139  */
02140 
02141 /*
02142    ---------------------------------------
02143    ---------- IPv6 options ---------------
02144    ---------------------------------------
02145 */
02146 /**
02147  * @defgroup lwip_opts_ipv6 IPv6
02148  * @ingroup lwip_opts
02149  * @{
02150  */
02151 /**
02152  * LWIP_IPV6==1: Enable IPv6
02153  */
02154 #if !defined LWIP_IPV6 || defined __DOXYGEN__
02155 #define LWIP_IPV6                       0
02156 #endif
02157 
02158 /**
02159  * LWIP_IPV6_NUM_ADDRESSES: Number of IPv6 addresses per netif.
02160  */
02161 #if !defined LWIP_IPV6_NUM_ADDRESSES || defined __DOXYGEN__
02162 #define LWIP_IPV6_NUM_ADDRESSES         3
02163 #endif
02164 
02165 /**
02166  * LWIP_IPV6_FORWARD==1: Forward IPv6 packets across netifs
02167  */
02168 #if !defined LWIP_IPV6_FORWARD || defined __DOXYGEN__
02169 #define LWIP_IPV6_FORWARD               0
02170 #endif
02171 
02172 /**
02173  * LWIP_IPV6_FRAG==1: Fragment outgoing IPv6 packets that are too big.
02174  */
02175 #if !defined LWIP_IPV6_FRAG || defined __DOXYGEN__
02176 #define LWIP_IPV6_FRAG                  0
02177 #endif
02178 
02179 /**
02180  * LWIP_IPV6_REASS==1: reassemble incoming IPv6 packets that fragmented
02181  */
02182 #if !defined LWIP_IPV6_REASS || defined __DOXYGEN__
02183 #define LWIP_IPV6_REASS                 (LWIP_IPV6)
02184 #endif
02185 
02186 /**
02187  * LWIP_IPV6_SEND_ROUTER_SOLICIT==1: Send router solicitation messages during
02188  * network startup.
02189  */
02190 #if !defined LWIP_IPV6_SEND_ROUTER_SOLICIT || defined __DOXYGEN__
02191 #define LWIP_IPV6_SEND_ROUTER_SOLICIT   1
02192 #endif
02193 
02194 /**
02195  * LWIP_IPV6_AUTOCONFIG==1: Enable stateless address autoconfiguration as per RFC 4862.
02196  */
02197 #if !defined LWIP_IPV6_AUTOCONFIG || defined __DOXYGEN__
02198 #define LWIP_IPV6_AUTOCONFIG            (LWIP_IPV6)
02199 #endif
02200 
02201 /**
02202  * LWIP_IPV6_DUP_DETECT_ATTEMPTS=[0..7]: Number of duplicate address detection attempts.
02203  */
02204 #if !defined LWIP_IPV6_DUP_DETECT_ATTEMPTS || defined __DOXYGEN__
02205 #define LWIP_IPV6_DUP_DETECT_ATTEMPTS   1
02206 #endif
02207 /**
02208  * @}
02209  */
02210 
02211 /**
02212  * @defgroup lwip_opts_icmp6 ICMP6
02213  * @ingroup lwip_opts_ipv6
02214  * @{
02215  */
02216 /**
02217  * LWIP_ICMP6==1: Enable ICMPv6 (mandatory per RFC)
02218  */
02219 #if !defined LWIP_ICMP6 || defined __DOXYGEN__
02220 #define LWIP_ICMP6                      (LWIP_IPV6)
02221 #endif
02222 
02223 /**
02224  * LWIP_ICMP6_DATASIZE: bytes from original packet to send back in
02225  * ICMPv6 error messages.
02226  */
02227 #if !defined LWIP_ICMP6_DATASIZE || defined __DOXYGEN__
02228 #define LWIP_ICMP6_DATASIZE             8
02229 #endif
02230 
02231 /**
02232  * LWIP_ICMP6_HL: default hop limit for ICMPv6 messages
02233  */
02234 #if !defined LWIP_ICMP6_HL || defined __DOXYGEN__
02235 #define LWIP_ICMP6_HL                   255
02236 #endif
02237 /**
02238  * @}
02239  */
02240 
02241 /**
02242  * @defgroup lwip_opts_mld6 Multicast listener discovery
02243  * @ingroup lwip_opts_ipv6
02244  * @{
02245  */
02246 /**
02247  * LWIP_IPV6_MLD==1: Enable multicast listener discovery protocol.
02248  * If LWIP_IPV6 is enabled but this setting is disabled, the MAC layer must
02249  * indiscriminately pass all inbound IPv6 multicast traffic to lwIP.
02250  */
02251 #if !defined LWIP_IPV6_MLD || defined __DOXYGEN__
02252 #define LWIP_IPV6_MLD                   (LWIP_IPV6)
02253 #endif
02254 
02255 /**
02256  * MEMP_NUM_MLD6_GROUP: Max number of IPv6 multicast groups that can be joined.
02257  * There must be enough groups so that each netif can join the solicited-node
02258  * multicast group for each of its local addresses, plus one for MDNS if
02259  * applicable, plus any number of groups to be joined on UDP sockets.
02260  */
02261 #if !defined MEMP_NUM_MLD6_GROUP || defined __DOXYGEN__
02262 #define MEMP_NUM_MLD6_GROUP             4
02263 #endif
02264 /**
02265  * @}
02266  */
02267 
02268 /**
02269  * @defgroup lwip_opts_nd6 Neighbor discovery
02270  * @ingroup lwip_opts_ipv6
02271  * @{
02272  */
02273 /**
02274  * LWIP_ND6_QUEUEING==1: queue outgoing IPv6 packets while MAC address
02275  * is being resolved.
02276  */
02277 #if !defined LWIP_ND6_QUEUEING || defined __DOXYGEN__
02278 #define LWIP_ND6_QUEUEING               (LWIP_IPV6)
02279 #endif
02280 
02281 /**
02282  * MEMP_NUM_ND6_QUEUE: Max number of IPv6 packets to queue during MAC resolution.
02283  */
02284 #if !defined MEMP_NUM_ND6_QUEUE || defined __DOXYGEN__
02285 #define MEMP_NUM_ND6_QUEUE              20
02286 #endif
02287 
02288 /**
02289  * LWIP_ND6_NUM_NEIGHBORS: Number of entries in IPv6 neighbor cache
02290  */
02291 #if !defined LWIP_ND6_NUM_NEIGHBORS || defined __DOXYGEN__
02292 #define LWIP_ND6_NUM_NEIGHBORS          10
02293 #endif
02294 
02295 /**
02296  * LWIP_ND6_NUM_DESTINATIONS: number of entries in IPv6 destination cache
02297  */
02298 #if !defined LWIP_ND6_NUM_DESTINATIONS || defined __DOXYGEN__
02299 #define LWIP_ND6_NUM_DESTINATIONS       10
02300 #endif
02301 
02302 /**
02303  * LWIP_ND6_NUM_PREFIXES: number of entries in IPv6 on-link prefixes cache
02304  */
02305 #if !defined LWIP_ND6_NUM_PREFIXES || defined __DOXYGEN__
02306 #define LWIP_ND6_NUM_PREFIXES           5
02307 #endif
02308 
02309 /**
02310  * LWIP_ND6_NUM_ROUTERS: number of entries in IPv6 default router cache
02311  */
02312 #if !defined LWIP_ND6_NUM_ROUTERS || defined __DOXYGEN__
02313 #define LWIP_ND6_NUM_ROUTERS            3
02314 #endif
02315 
02316 /**
02317  * LWIP_ND6_MAX_MULTICAST_SOLICIT: max number of multicast solicit messages to send
02318  * (neighbor solicit and router solicit)
02319  */
02320 #if !defined LWIP_ND6_MAX_MULTICAST_SOLICIT || defined __DOXYGEN__
02321 #define LWIP_ND6_MAX_MULTICAST_SOLICIT  3
02322 #endif
02323 
02324 /**
02325  * LWIP_ND6_MAX_UNICAST_SOLICIT: max number of unicast neighbor solicitation messages
02326  * to send during neighbor reachability detection.
02327  */
02328 #if !defined LWIP_ND6_MAX_UNICAST_SOLICIT || defined __DOXYGEN__
02329 #define LWIP_ND6_MAX_UNICAST_SOLICIT    3
02330 #endif
02331 
02332 /**
02333  * Unused: See ND RFC (time in milliseconds).
02334  */
02335 #if !defined LWIP_ND6_MAX_ANYCAST_DELAY_TIME || defined __DOXYGEN__
02336 #define LWIP_ND6_MAX_ANYCAST_DELAY_TIME 1000
02337 #endif
02338 
02339 /**
02340  * Unused: See ND RFC
02341  */
02342 #if !defined LWIP_ND6_MAX_NEIGHBOR_ADVERTISEMENT || defined __DOXYGEN__
02343 #define LWIP_ND6_MAX_NEIGHBOR_ADVERTISEMENT  3
02344 #endif
02345 
02346 /**
02347  * LWIP_ND6_REACHABLE_TIME: default neighbor reachable time (in milliseconds).
02348  * May be updated by router advertisement messages.
02349  */
02350 #if !defined LWIP_ND6_REACHABLE_TIME || defined __DOXYGEN__
02351 #define LWIP_ND6_REACHABLE_TIME         30000
02352 #endif
02353 
02354 /**
02355  * LWIP_ND6_RETRANS_TIMER: default retransmission timer for solicitation messages
02356  */
02357 #if !defined LWIP_ND6_RETRANS_TIMER || defined __DOXYGEN__
02358 #define LWIP_ND6_RETRANS_TIMER          1000
02359 #endif
02360 
02361 /**
02362  * LWIP_ND6_DELAY_FIRST_PROBE_TIME: Delay before first unicast neighbor solicitation
02363  * message is sent, during neighbor reachability detection.
02364  */
02365 #if !defined LWIP_ND6_DELAY_FIRST_PROBE_TIME || defined __DOXYGEN__
02366 #define LWIP_ND6_DELAY_FIRST_PROBE_TIME 5000
02367 #endif
02368 
02369 /**
02370  * LWIP_ND6_ALLOW_RA_UPDATES==1: Allow Router Advertisement messages to update
02371  * Reachable time and retransmission timers, and netif MTU.
02372  */
02373 #if !defined LWIP_ND6_ALLOW_RA_UPDATES || defined __DOXYGEN__
02374 #define LWIP_ND6_ALLOW_RA_UPDATES       1
02375 #endif
02376 
02377 /**
02378  * LWIP_ND6_TCP_REACHABILITY_HINTS==1: Allow TCP to provide Neighbor Discovery
02379  * with reachability hints for connected destinations. This helps avoid sending
02380  * unicast neighbor solicitation messages.
02381  */
02382 #if !defined LWIP_ND6_TCP_REACHABILITY_HINTS || defined __DOXYGEN__
02383 #define LWIP_ND6_TCP_REACHABILITY_HINTS 1
02384 #endif
02385 
02386 /**
02387  * LWIP_ND6_RDNSS_MAX_DNS_SERVERS > 0: Use IPv6 Router Advertisement Recursive
02388  * DNS Server Option (as per RFC 6106) to copy a defined maximum number of DNS
02389  * servers to the DNS module.
02390  */
02391 #if !defined LWIP_ND6_RDNSS_MAX_DNS_SERVERS || defined __DOXYGEN__
02392 #define LWIP_ND6_RDNSS_MAX_DNS_SERVERS  0
02393 #endif
02394 /**
02395  * @}
02396  */
02397 
02398 /**
02399  * LWIP_IPV6_DHCP6==1: enable DHCPv6 stateful address autoconfiguration.
02400  */
02401 #if !defined LWIP_IPV6_DHCP6 || defined __DOXYGEN__
02402 #define LWIP_IPV6_DHCP6                 0
02403 #endif
02404 
02405 /*
02406    ---------------------------------------
02407    ---------- Hook options ---------------
02408    ---------------------------------------
02409 */
02410 
02411 /**
02412  * @defgroup lwip_opts_hooks Hooks
02413  * @ingroup lwip_opts_infrastructure
02414  * Hooks are undefined by default, define them to a function if you need them.
02415  * @{
02416  */
02417 
02418 /**
02419  * LWIP_HOOK_TCP_ISN:
02420  * Hook for generation of the Initial Sequence Number (ISN) for a new TCP
02421  * connection. The default lwIP ISN generation algorithm is very basic and may
02422  * allow for TCP spoofing attacks. This hook provides the means to implement
02423  * the standardized ISN generation algorithm from RFC 6528 (see contrib/adons/tcp_isn),
02424  * or any other desired algorithm as a replacement.
02425  * Called from tcp_connect() and tcp_listen_input() when an ISN is needed for
02426  * a new TCP connection, if TCP support (@ref LWIP_TCP) is enabled.\n
02427  * Signature: u32_t my_hook_tcp_isn(const ip_addr_t* local_ip, u16_t local_port, const ip_addr_t* remote_ip, u16_t remote_port);
02428  * - it may be necessary to use "struct ip_addr" (ip4_addr, ip6_addr) instead of "ip_addr_t" in function declarations\n
02429  * Arguments:
02430  * - local_ip: pointer to the local IP address of the connection
02431  * - local_port: local port number of the connection (host-byte order)
02432  * - remote_ip: pointer to the remote IP address of the connection
02433  * - remote_port: remote port number of the connection (host-byte order)\n
02434  * Return value:
02435  * - the 32-bit Initial Sequence Number to use for the new TCP connection.
02436  */
02437 #ifdef __DOXYGEN__
02438 #define LWIP_HOOK_TCP_ISN(local_ip, local_port, remote_ip, remote_port)
02439 #endif
02440 
02441 /**
02442  * LWIP_HOOK_IP4_INPUT(pbuf, input_netif):
02443  * - called from ip_input() (IPv4)
02444  * - pbuf: received struct pbuf passed to ip_input()
02445  * - input_netif: struct netif on which the packet has been received
02446  * Return values:
02447  * - 0: Hook has not consumed the packet, packet is processed as normal
02448  * - != 0: Hook has consumed the packet.
02449  * If the hook consumed the packet, 'pbuf' is in the responsibility of the hook
02450  * (i.e. free it when done).
02451  */
02452 #ifdef __DOXYGEN__
02453 #define LWIP_HOOK_IP4_INPUT(pbuf, input_netif)
02454 #endif
02455 
02456 /**
02457  * LWIP_HOOK_IP4_ROUTE(dest):
02458  * - called from ip_route() (IPv4)
02459  * - dest: destination IPv4 address
02460  * Returns the destination netif or NULL if no destination netif is found. In
02461  * that case, ip_route() continues as normal.
02462  */
02463 #ifdef __DOXYGEN__
02464 #define LWIP_HOOK_IP4_ROUTE()
02465 #endif
02466 
02467 /**
02468  * LWIP_HOOK_IP4_ROUTE_SRC(dest, src):
02469  * - source-based routing for IPv4 (see LWIP_HOOK_IP4_ROUTE(), src may be NULL)
02470  */
02471 #ifdef __DOXYGEN__
02472 #define LWIP_HOOK_IP4_ROUTE_SRC(dest, src)
02473 #endif
02474 
02475 /**
02476  * LWIP_HOOK_ETHARP_GET_GW(netif, dest):
02477  * - called from etharp_output() (IPv4)
02478  * - netif: the netif used for sending
02479  * - dest: the destination IPv4 address
02480  * Returns the IPv4 address of the gateway to handle the specified destination
02481  * IPv4 address. If NULL is returned, the netif's default gateway is used.
02482  * The returned address MUST be directly reachable on the specified netif!
02483  * This function is meant to implement advanced IPv4 routing together with
02484  * LWIP_HOOK_IP4_ROUTE(). The actual routing/gateway table implementation is
02485  * not part of lwIP but can e.g. be hidden in the netif's state argument.
02486 */
02487 #ifdef __DOXYGEN__
02488 #define LWIP_HOOK_ETHARP_GET_GW(netif, dest)
02489 #endif
02490 
02491 /**
02492  * LWIP_HOOK_IP6_INPUT(pbuf, input_netif):
02493  * - called from ip6_input() (IPv6)
02494  * - pbuf: received struct pbuf passed to ip6_input()
02495  * - input_netif: struct netif on which the packet has been received
02496  * Return values:
02497  * - 0: Hook has not consumed the packet, packet is processed as normal
02498  * - != 0: Hook has consumed the packet.
02499  * If the hook consumed the packet, 'pbuf' is in the responsibility of the hook
02500  * (i.e. free it when done).
02501  */
02502 #ifdef __DOXYGEN__
02503 #define LWIP_HOOK_IP6_INPUT(pbuf, input_netif)
02504 #endif
02505 
02506 /**
02507  * LWIP_HOOK_IP6_ROUTE(src, dest):
02508  * - called from ip6_route() (IPv6)
02509  * - src: sourc IPv6 address
02510  * - dest: destination IPv6 address
02511  * Returns the destination netif or NULL if no destination netif is found. In
02512  * that case, ip6_route() continues as normal.
02513  */
02514 #ifdef __DOXYGEN__
02515 #define LWIP_HOOK_IP6_ROUTE(src, dest)
02516 #endif
02517 
02518 /**
02519  * LWIP_HOOK_ND6_GET_GW(netif, dest):
02520  * - called from nd6_get_next_hop_entry() (IPv6)
02521  * - netif: the netif used for sending
02522  * - dest: the destination IPv6 address
02523  * Returns the IPv6 address of the next hop to handle the specified destination
02524  * IPv6 address. If NULL is returned, a NDP-discovered router is used instead.
02525  * The returned address MUST be directly reachable on the specified netif!
02526  * This function is meant to implement advanced IPv6 routing together with
02527  * LWIP_HOOK_IP6_ROUTE(). The actual routing/gateway table implementation is
02528  * not part of lwIP but can e.g. be hidden in the netif's state argument.
02529 */
02530 #ifdef __DOXYGEN__
02531 #define LWIP_HOOK_ND6_GET_GW(netif, dest)
02532 #endif
02533 
02534 /**
02535  * LWIP_HOOK_VLAN_CHECK(netif, eth_hdr, vlan_hdr):
02536  * - called from ethernet_input() if VLAN support is enabled
02537  * - netif: struct netif on which the packet has been received
02538  * - eth_hdr: struct eth_hdr of the packet
02539  * - vlan_hdr: struct eth_vlan_hdr of the packet
02540  * Return values:
02541  * - 0: Packet must be dropped.
02542  * - != 0: Packet must be accepted.
02543  */
02544 #ifdef __DOXYGEN__
02545 #define LWIP_HOOK_VLAN_CHECK(netif, eth_hdr, vlan_hdr)
02546 #endif
02547 
02548 /**
02549  * LWIP_HOOK_VLAN_SET:
02550  * Hook can be used to set prio_vid field of vlan_hdr. If you need to store data
02551  * on per-netif basis to implement this callback, see @ref netif_cd.
02552  * Called from ethernet_output() if VLAN support (@ref ETHARP_SUPPORT_VLAN) is enabled.\n
02553  * Signature: s32_t my_hook_vlan_set(struct netif* netif, struct pbuf* pbuf, const struct eth_addr* src, const struct eth_addr* dst, u16_t eth_type);\n
02554  * Arguments:
02555  * - netif: struct netif that the packet will be sent through
02556  * - p: struct pbuf packet to be sent
02557  * - src: source eth address
02558  * - dst: destination eth address
02559  * - eth_type: ethernet type to packet to be sent\n
02560  * 
02561  * 
02562  * Return values:
02563  * - &lt;0: Packet shall not contain VLAN header.
02564  * - 0 &lt;= return value &lt;= 0xFFFF: Packet shall contain VLAN header. Return value is prio_vid in host byte order.
02565  */
02566 #ifdef __DOXYGEN__
02567 #define LWIP_HOOK_VLAN_SET(netif, p, src, dst, eth_type)
02568 #endif
02569 
02570 /**
02571  * LWIP_HOOK_MEMP_AVAILABLE(memp_t_type):
02572  * - called from memp_free() when a memp pool was empty and an item is now available
02573  */
02574 #ifdef __DOXYGEN__
02575 #define LWIP_HOOK_MEMP_AVAILABLE(memp_t_type)
02576 #endif
02577 
02578 /**
02579  * LWIP_HOOK_UNKNOWN_ETH_PROTOCOL(pbuf, netif):
02580  * Called from ethernet_input() when an unknown eth type is encountered.
02581  * Return ERR_OK if packet is accepted, any error code otherwise.
02582  * Payload points to ethernet header!
02583  */
02584 #ifdef __DOXYGEN__
02585 #define LWIP_HOOK_UNKNOWN_ETH_PROTOCOL(pbuf, netif)
02586 #endif
02587 /**
02588  * @}
02589  */
02590 
02591 /*
02592    ---------------------------------------
02593    ---------- Debugging options ----------
02594    ---------------------------------------
02595 */
02596 /**
02597  * @defgroup lwip_opts_debugmsg Debug messages
02598  * @ingroup lwip_opts_debug
02599  * @{
02600  */
02601 /**
02602  * LWIP_DBG_MIN_LEVEL: After masking, the value of the debug is
02603  * compared against this value. If it is smaller, then debugging
02604  * messages are written.
02605  * @see debugging_levels
02606  */
02607 #if !defined LWIP_DBG_MIN_LEVEL || defined __DOXYGEN__
02608 #define LWIP_DBG_MIN_LEVEL              LWIP_DBG_LEVEL_ALL
02609 #endif
02610 
02611 /**
02612  * LWIP_DBG_TYPES_ON: A mask that can be used to globally enable/disable
02613  * debug messages of certain types.
02614  * @see debugging_levels
02615  */
02616 #if !defined LWIP_DBG_TYPES_ON || defined __DOXYGEN__
02617 #define LWIP_DBG_TYPES_ON               LWIP_DBG_ON
02618 #endif
02619 
02620 /**
02621  * ETHARP_DEBUG: Enable debugging in etharp.c.
02622  */
02623 #if !defined ETHARP_DEBUG || defined __DOXYGEN__
02624 #define ETHARP_DEBUG                    LWIP_DBG_OFF
02625 #endif
02626 
02627 /**
02628  * NETIF_DEBUG: Enable debugging in netif.c.
02629  */
02630 #if !defined NETIF_DEBUG || defined __DOXYGEN__
02631 #define NETIF_DEBUG                     LWIP_DBG_OFF
02632 #endif
02633 
02634 /**
02635  * PBUF_DEBUG: Enable debugging in pbuf.c.
02636  */
02637 #if !defined PBUF_DEBUG || defined __DOXYGEN__
02638 #define PBUF_DEBUG                      LWIP_DBG_OFF
02639 #endif
02640 
02641 /**
02642  * API_LIB_DEBUG: Enable debugging in api_lib.c.
02643  */
02644 #if !defined API_LIB_DEBUG || defined __DOXYGEN__
02645 #define API_LIB_DEBUG                   LWIP_DBG_OFF
02646 #endif
02647 
02648 /**
02649  * API_MSG_DEBUG: Enable debugging in api_msg.c.
02650  */
02651 #if !defined API_MSG_DEBUG || defined __DOXYGEN__
02652 #define API_MSG_DEBUG                   LWIP_DBG_OFF
02653 #endif
02654 
02655 /**
02656  * SOCKETS_DEBUG: Enable debugging in sockets.c.
02657  */
02658 #if !defined SOCKETS_DEBUG || defined __DOXYGEN__
02659 #define SOCKETS_DEBUG                   LWIP_DBG_OFF
02660 #endif
02661 
02662 /**
02663  * ICMP_DEBUG: Enable debugging in icmp.c.
02664  */
02665 #if !defined ICMP_DEBUG || defined __DOXYGEN__
02666 #define ICMP_DEBUG                      LWIP_DBG_OFF
02667 #endif
02668 
02669 /**
02670  * IGMP_DEBUG: Enable debugging in igmp.c.
02671  */
02672 #if !defined IGMP_DEBUG || defined __DOXYGEN__
02673 #define IGMP_DEBUG                      LWIP_DBG_OFF
02674 #endif
02675 
02676 /**
02677  * INET_DEBUG: Enable debugging in inet.c.
02678  */
02679 #if !defined INET_DEBUG || defined __DOXYGEN__
02680 #define INET_DEBUG                      LWIP_DBG_OFF
02681 #endif
02682 
02683 /**
02684  * IP_DEBUG: Enable debugging for IP.
02685  */
02686 #if !defined IP_DEBUG || defined __DOXYGEN__
02687 #define IP_DEBUG                        LWIP_DBG_OFF
02688 #endif
02689 
02690 /**
02691  * IP_REASS_DEBUG: Enable debugging in ip_frag.c for both frag & reass.
02692  */
02693 #if !defined IP_REASS_DEBUG || defined __DOXYGEN__
02694 #define IP_REASS_DEBUG                  LWIP_DBG_OFF
02695 #endif
02696 
02697 /**
02698  * RAW_DEBUG: Enable debugging in raw.c.
02699  */
02700 #if !defined RAW_DEBUG || defined __DOXYGEN__
02701 #define RAW_DEBUG                       LWIP_DBG_OFF
02702 #endif
02703 
02704 /**
02705  * MEM_DEBUG: Enable debugging in mem.c.
02706  */
02707 #if !defined MEM_DEBUG || defined __DOXYGEN__
02708 #define MEM_DEBUG                       LWIP_DBG_OFF
02709 #endif
02710 
02711 /**
02712  * MEMP_DEBUG: Enable debugging in memp.c.
02713  */
02714 #if !defined MEMP_DEBUG || defined __DOXYGEN__
02715 #define MEMP_DEBUG                      LWIP_DBG_OFF
02716 #endif
02717 
02718 /**
02719  * SYS_DEBUG: Enable debugging in sys.c.
02720  */
02721 #if !defined SYS_DEBUG || defined __DOXYGEN__
02722 #define SYS_DEBUG                       LWIP_DBG_OFF
02723 #endif
02724 
02725 /**
02726  * TIMERS_DEBUG: Enable debugging in timers.c.
02727  */
02728 #if !defined TIMERS_DEBUG || defined __DOXYGEN__
02729 #define TIMERS_DEBUG                    LWIP_DBG_OFF
02730 #endif
02731 
02732 /**
02733  * TCP_DEBUG: Enable debugging for TCP.
02734  */
02735 #if !defined TCP_DEBUG || defined __DOXYGEN__
02736 #define TCP_DEBUG                       LWIP_DBG_OFF
02737 #endif
02738 
02739 /**
02740  * TCP_INPUT_DEBUG: Enable debugging in tcp_in.c for incoming debug.
02741  */
02742 #if !defined TCP_INPUT_DEBUG || defined __DOXYGEN__
02743 #define TCP_INPUT_DEBUG                 LWIP_DBG_OFF
02744 #endif
02745 
02746 /**
02747  * TCP_FR_DEBUG: Enable debugging in tcp_in.c for fast retransmit.
02748  */
02749 #if !defined TCP_FR_DEBUG || defined __DOXYGEN__
02750 #define TCP_FR_DEBUG                    LWIP_DBG_OFF
02751 #endif
02752 
02753 /**
02754  * TCP_RTO_DEBUG: Enable debugging in TCP for retransmit
02755  * timeout.
02756  */
02757 #if !defined TCP_RTO_DEBUG || defined __DOXYGEN__
02758 #define TCP_RTO_DEBUG                   LWIP_DBG_OFF
02759 #endif
02760 
02761 /**
02762  * TCP_CWND_DEBUG: Enable debugging for TCP congestion window.
02763  */
02764 #if !defined TCP_CWND_DEBUG || defined __DOXYGEN__
02765 #define TCP_CWND_DEBUG                  LWIP_DBG_OFF
02766 #endif
02767 
02768 /**
02769  * TCP_WND_DEBUG: Enable debugging in tcp_in.c for window updating.
02770  */
02771 #if !defined TCP_WND_DEBUG || defined __DOXYGEN__
02772 #define TCP_WND_DEBUG                   LWIP_DBG_OFF
02773 #endif
02774 
02775 /**
02776  * TCP_OUTPUT_DEBUG: Enable debugging in tcp_out.c output functions.
02777  */
02778 #if !defined TCP_OUTPUT_DEBUG || defined __DOXYGEN__
02779 #define TCP_OUTPUT_DEBUG                LWIP_DBG_OFF
02780 #endif
02781 
02782 /**
02783  * TCP_RST_DEBUG: Enable debugging for TCP with the RST message.
02784  */
02785 #if !defined TCP_RST_DEBUG || defined __DOXYGEN__
02786 #define TCP_RST_DEBUG                   LWIP_DBG_OFF
02787 #endif
02788 
02789 /**
02790  * TCP_QLEN_DEBUG: Enable debugging for TCP queue lengths.
02791  */
02792 #if !defined TCP_QLEN_DEBUG || defined __DOXYGEN__
02793 #define TCP_QLEN_DEBUG                  LWIP_DBG_OFF
02794 #endif
02795 
02796 /**
02797  * UDP_DEBUG: Enable debugging in UDP.
02798  */
02799 #if !defined UDP_DEBUG || defined __DOXYGEN__
02800 #define UDP_DEBUG                       LWIP_DBG_OFF
02801 #endif
02802 
02803 /**
02804  * TCPIP_DEBUG: Enable debugging in tcpip.c.
02805  */
02806 #if !defined TCPIP_DEBUG || defined __DOXYGEN__
02807 #define TCPIP_DEBUG                     LWIP_DBG_OFF
02808 #endif
02809 
02810 /**
02811  * SLIP_DEBUG: Enable debugging in slipif.c.
02812  */
02813 #if !defined SLIP_DEBUG || defined __DOXYGEN__
02814 #define SLIP_DEBUG                      LWIP_DBG_OFF
02815 #endif
02816 
02817 /**
02818  * DHCP_DEBUG: Enable debugging in dhcp.c.
02819  */
02820 #if !defined DHCP_DEBUG || defined __DOXYGEN__
02821 #define DHCP_DEBUG                      LWIP_DBG_OFF
02822 #endif
02823 
02824 /**
02825  * AUTOIP_DEBUG: Enable debugging in autoip.c.
02826  */
02827 #if !defined AUTOIP_DEBUG || defined __DOXYGEN__
02828 #define AUTOIP_DEBUG                    LWIP_DBG_OFF
02829 #endif
02830 
02831 /**
02832  * DNS_DEBUG: Enable debugging for DNS.
02833  */
02834 #if !defined DNS_DEBUG || defined __DOXYGEN__
02835 #define DNS_DEBUG                       LWIP_DBG_OFF
02836 #endif
02837 
02838 /**
02839  * IP6_DEBUG: Enable debugging for IPv6.
02840  */
02841 #if !defined IP6_DEBUG || defined __DOXYGEN__
02842 #define IP6_DEBUG                       LWIP_DBG_OFF
02843 #endif
02844 /**
02845  * @}
02846  */
02847 
02848 /*
02849    --------------------------------------------------
02850    ---------- Performance tracking options ----------
02851    --------------------------------------------------
02852 */
02853 /**
02854  * @defgroup lwip_opts_perf Performance
02855  * @ingroup lwip_opts_debug
02856  * @{
02857  */
02858 /**
02859  * LWIP_PERF: Enable performance testing for lwIP
02860  * (if enabled, arch/perf.h is included)
02861  */
02862 #if !defined LWIP_PERF || defined __DOXYGEN__
02863 #define LWIP_PERF                       0
02864 #endif
02865 /**
02866  * @}
02867  */
02868 
02869 #endif /* LWIP_HDR_OPT_H */