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 #ifndef __LWIP_OPT_H__
00039 #define __LWIP_OPT_H__
00040 
00041 /*
00042  * Include user defined options first. Anything not defined in these files
00043  * will be set to standard values. Override anything you dont like!
00044  */
00045 #include "lwipopts.h"
00046 #include "lwip/debug.h"
00047 
00048 /*
00049    -----------------------------------------------
00050    ---------- Platform specific locking ----------
00051    -----------------------------------------------
00052 */
00053 
00054 /**
00055  * SYS_LIGHTWEIGHT_PROT==1: if you want inter-task protection for certain
00056  * critical regions during buffer allocation, deallocation and memory
00057  * allocation and deallocation.
00058  */
00059 #ifndef SYS_LIGHTWEIGHT_PROT
00060 #define SYS_LIGHTWEIGHT_PROT            0
00061 #endif
00062 
00063 /**
00064  * NO_SYS==1: Provides VERY minimal functionality. Otherwise,
00065  * use lwIP facilities.
00066  */
00067 #ifndef NO_SYS
00068 #define NO_SYS                          0
00069 #endif
00070 
00071 /**
00072  * NO_SYS_NO_TIMERS==1: Drop support for sys_timeout when NO_SYS==1
00073  * Mainly for compatibility to old versions.
00074  */
00075 #ifndef NO_SYS_NO_TIMERS
00076 #define NO_SYS_NO_TIMERS                0
00077 #endif
00078 
00079 /**
00080  * MEMCPY: override this if you have a faster implementation at hand than the
00081  * one included in your C library
00082  */
00083 #ifndef MEMCPY
00084 #define MEMCPY(dst,src,len)             memcpy(dst,src,len)
00085 #endif
00086 
00087 /**
00088  * SMEMCPY: override this with care! Some compilers (e.g. gcc) can inline a
00089  * call to memcpy() if the length is known at compile time and is small.
00090  */
00091 #ifndef SMEMCPY
00092 #define SMEMCPY(dst,src,len)            memcpy(dst,src,len)
00093 #endif
00094 
00095 /*
00096    ------------------------------------
00097    ---------- Memory options ----------
00098    ------------------------------------
00099 */
00100 /**
00101  * MEM_LIBC_MALLOC==1: Use malloc/free/realloc provided by your C-library
00102  * instead of the lwip internal allocator. Can save code size if you
00103  * already use it.
00104  */
00105 #ifndef MEM_LIBC_MALLOC
00106 #define MEM_LIBC_MALLOC                 0
00107 #endif
00108 
00109 /**
00110 * MEMP_MEM_MALLOC==1: Use mem_malloc/mem_free instead of the lwip pool allocator.
00111 * Especially useful with MEM_LIBC_MALLOC but handle with care regarding execution
00112 * speed and usage from interrupts!
00113 */
00114 #ifndef MEMP_MEM_MALLOC
00115 #define MEMP_MEM_MALLOC                 0
00116 #endif
00117 
00118 /**
00119  * MEM_ALIGNMENT: should be set to the alignment of the CPU
00120  *    4 byte alignment -> #define MEM_ALIGNMENT 4
00121  *    2 byte alignment -> #define MEM_ALIGNMENT 2
00122  */
00123 #ifndef MEM_ALIGNMENT
00124 #define MEM_ALIGNMENT                   1
00125 #endif
00126 
00127 /**
00128  * MEM_SIZE: the size of the heap memory. If the application will send
00129  * a lot of data that needs to be copied, this should be set high.
00130  */
00131 #ifndef MEM_SIZE
00132 #define MEM_SIZE                        1600
00133 #endif
00134 
00135 /**
00136  * MEMP_SEPARATE_POOLS: if defined to 1, each pool is placed in its own array.
00137  * This can be used to individually change the location of each pool.
00138  * Default is one big array for all pools
00139  */
00140 #ifndef MEMP_SEPARATE_POOLS
00141 #define MEMP_SEPARATE_POOLS             0
00142 #endif
00143 
00144 /**
00145  * MEMP_OVERFLOW_CHECK: memp overflow protection reserves a configurable
00146  * amount of bytes before and after each memp element in every pool and fills
00147  * it with a prominent default value.
00148  *    MEMP_OVERFLOW_CHECK == 0 no checking
00149  *    MEMP_OVERFLOW_CHECK == 1 checks each element when it is freed
00150  *    MEMP_OVERFLOW_CHECK >= 2 checks each element in every pool every time
00151  *      memp_malloc() or memp_free() is called (useful but slow!)
00152  */
00153 #ifndef MEMP_OVERFLOW_CHECK
00154 #define MEMP_OVERFLOW_CHECK             0
00155 #endif
00156 
00157 /**
00158  * MEMP_SANITY_CHECK==1: run a sanity check after each memp_free() to make
00159  * sure that there are no cycles in the linked lists.
00160  */
00161 #ifndef MEMP_SANITY_CHECK
00162 #define MEMP_SANITY_CHECK               0
00163 #endif
00164 
00165 /**
00166  * MEM_USE_POOLS==1: Use an alternative to malloc() by allocating from a set
00167  * of memory pools of various sizes. When mem_malloc is called, an element of
00168  * the smallest pool that can provide the length needed is returned.
00169  * To use this, MEMP_USE_CUSTOM_POOLS also has to be enabled.
00170  */
00171 #ifndef MEM_USE_POOLS
00172 #define MEM_USE_POOLS                   0
00173 #endif
00174 
00175 /**
00176  * MEM_USE_POOLS_TRY_BIGGER_POOL==1: if one malloc-pool is empty, try the next
00177  * bigger pool - WARNING: THIS MIGHT WASTE MEMORY but it can make a system more
00178  * reliable. */
00179 #ifndef MEM_USE_POOLS_TRY_BIGGER_POOL
00180 #define MEM_USE_POOLS_TRY_BIGGER_POOL   0
00181 #endif
00182 
00183 /**
00184  * MEMP_USE_CUSTOM_POOLS==1: whether to include a user file lwippools.h
00185  * that defines additional pools beyond the "standard" ones required
00186  * by lwIP. If you set this to 1, you must have lwippools.h in your
00187  * inlude path somewhere.
00188  */
00189 #ifndef MEMP_USE_CUSTOM_POOLS
00190 #define MEMP_USE_CUSTOM_POOLS           0
00191 #endif
00192 
00193 /**
00194  * Set this to 1 if you want to free PBUF_RAM pbufs (or call mem_free()) from
00195  * interrupt context (or another context that doesn't allow waiting for a
00196  * semaphore).
00197  * If set to 1, mem_malloc will be protected by a semaphore and SYS_ARCH_PROTECT,
00198  * while mem_free will only use SYS_ARCH_PROTECT. mem_malloc SYS_ARCH_UNPROTECTs
00199  * with each loop so that mem_free can run.
00200  *
00201  * ATTENTION: As you can see from the above description, this leads to dis-/
00202  * enabling interrupts often, which can be slow! Also, on low memory, mem_malloc
00203  * can need longer.
00204  *
00205  * If you don't want that, at least for NO_SYS=0, you can still use the following
00206  * functions to enqueue a deallocation call which then runs in the tcpip_thread
00207  * context:
00208  * - pbuf_free_callback(p);
00209  * - mem_free_callback(m);
00210  */
00211 #ifndef LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT
00212 #define LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT 0
00213 #endif
00214 
00215 /*
00216    ------------------------------------------------
00217    ---------- Internal Memory Pool Sizes ----------
00218    ------------------------------------------------
00219 */
00220 /**
00221  * MEMP_NUM_PBUF: the number of memp struct pbufs (used for PBUF_ROM and PBUF_REF).
00222  * If the application sends a lot of data out of ROM (or other static memory),
00223  * this should be set high.
00224  */
00225 #ifndef MEMP_NUM_PBUF
00226 #define MEMP_NUM_PBUF                   16
00227 #endif
00228 
00229 /**
00230  * MEMP_NUM_RAW_PCB: Number of raw connection PCBs
00231  * (requires the LWIP_RAW option)
00232  */
00233 #ifndef MEMP_NUM_RAW_PCB
00234 #define MEMP_NUM_RAW_PCB                4
00235 #endif
00236 
00237 /**
00238  * MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
00239  * per active UDP "connection".
00240  * (requires the LWIP_UDP option)
00241  */
00242 #ifndef MEMP_NUM_UDP_PCB
00243 #define MEMP_NUM_UDP_PCB                4
00244 #endif
00245 
00246 /**
00247  * MEMP_NUM_TCP_PCB: the number of simulatenously active TCP connections.
00248  * (requires the LWIP_TCP option)
00249  */
00250 #ifndef MEMP_NUM_TCP_PCB
00251 #define MEMP_NUM_TCP_PCB                5
00252 #endif
00253 
00254 /**
00255  * MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP connections.
00256  * (requires the LWIP_TCP option)
00257  */
00258 #ifndef MEMP_NUM_TCP_PCB_LISTEN
00259 #define MEMP_NUM_TCP_PCB_LISTEN         8
00260 #endif
00261 
00262 /**
00263  * MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments.
00264  * (requires the LWIP_TCP option)
00265  */
00266 #ifndef MEMP_NUM_TCP_SEG
00267 #define MEMP_NUM_TCP_SEG                16
00268 #endif
00269 
00270 /**
00271  * MEMP_NUM_REASSDATA: the number of IP packets simultaneously queued for
00272  * reassembly (whole packets, not fragments!)
00273  */
00274 #ifndef MEMP_NUM_REASSDATA
00275 #define MEMP_NUM_REASSDATA              5
00276 #endif
00277 
00278 /**
00279  * MEMP_NUM_FRAG_PBUF: the number of IP fragments simultaneously sent
00280  * (fragments, not whole packets!).
00281  * This is only used with IP_FRAG_USES_STATIC_BUF==0 and
00282  * LWIP_NETIF_TX_SINGLE_PBUF==0 and only has to be > 1 with DMA-enabled MACs
00283  * where the packet is not yet sent when netif->output returns.
00284  */
00285 #ifndef MEMP_NUM_FRAG_PBUF
00286 #define MEMP_NUM_FRAG_PBUF              15
00287 #endif
00288 
00289 /**
00290  * MEMP_NUM_ARP_QUEUE: the number of simulateously queued outgoing
00291  * packets (pbufs) that are waiting for an ARP request (to resolve
00292  * their destination address) to finish.
00293  * (requires the ARP_QUEUEING option)
00294  */
00295 #ifndef MEMP_NUM_ARP_QUEUE
00296 #define MEMP_NUM_ARP_QUEUE              30
00297 #endif
00298 
00299 /**
00300  * MEMP_NUM_IGMP_GROUP: The number of multicast groups whose network interfaces
00301  * can be members et the same time (one per netif - allsystems group -, plus one
00302  * per netif membership).
00303  * (requires the LWIP_IGMP option)
00304  */
00305 #ifndef MEMP_NUM_IGMP_GROUP
00306 #define MEMP_NUM_IGMP_GROUP             8
00307 #endif
00308 
00309 /**
00310  * MEMP_NUM_SYS_TIMEOUT: the number of simulateously active timeouts.
00311  * (requires NO_SYS==0)
00312  * The default number of timeouts is calculated here for all enabled modules.
00313  * The formula expects settings to be either '0' or '1'.
00314  */
00315 #ifndef MEMP_NUM_SYS_TIMEOUT
00316 #define MEMP_NUM_SYS_TIMEOUT            (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_SUPPORT)
00317 #endif
00318 
00319 /**
00320  * MEMP_NUM_NETBUF: the number of struct netbufs.
00321  * (only needed if you use the sequential API, like api_lib.c)
00322  */
00323 #ifndef MEMP_NUM_NETBUF
00324 #define MEMP_NUM_NETBUF                 2
00325 #endif
00326 
00327 /**
00328  * MEMP_NUM_NETCONN: the number of struct netconns.
00329  * (only needed if you use the sequential API, like api_lib.c)
00330  */
00331 #ifndef MEMP_NUM_NETCONN
00332 #define MEMP_NUM_NETCONN                4
00333 #endif
00334 
00335 /**
00336  * MEMP_NUM_TCPIP_MSG_API: the number of struct tcpip_msg, which are used
00337  * for callback/timeout API communication.
00338  * (only needed if you use tcpip.c)
00339  */
00340 #ifndef MEMP_NUM_TCPIP_MSG_API
00341 #define MEMP_NUM_TCPIP_MSG_API          8
00342 #endif
00343 
00344 /**
00345  * MEMP_NUM_TCPIP_MSG_INPKT: the number of struct tcpip_msg, which are used
00346  * for incoming packets.
00347  * (only needed if you use tcpip.c)
00348  */
00349 #ifndef MEMP_NUM_TCPIP_MSG_INPKT
00350 #define MEMP_NUM_TCPIP_MSG_INPKT        8
00351 #endif
00352 
00353 /**
00354  * MEMP_NUM_SNMP_NODE: the number of leafs in the SNMP tree.
00355  */
00356 #ifndef MEMP_NUM_SNMP_NODE
00357 #define MEMP_NUM_SNMP_NODE              50
00358 #endif
00359 
00360 /**
00361  * MEMP_NUM_SNMP_ROOTNODE: the number of branches in the SNMP tree.
00362  * Every branch has one leaf (MEMP_NUM_SNMP_NODE) at least!
00363  */
00364 #ifndef MEMP_NUM_SNMP_ROOTNODE
00365 #define MEMP_NUM_SNMP_ROOTNODE          30
00366 #endif
00367 
00368 /**
00369  * MEMP_NUM_SNMP_VARBIND: the number of concurrent requests (does not have to
00370  * be changed normally) - 2 of these are used per request (1 for input,
00371  * 1 for output)
00372  */
00373 #ifndef MEMP_NUM_SNMP_VARBIND
00374 #define MEMP_NUM_SNMP_VARBIND           2
00375 #endif
00376 
00377 /**
00378  * MEMP_NUM_SNMP_VALUE: the number of OID or values concurrently used
00379  * (does not have to be changed normally) - 3 of these are used per request
00380  * (1 for the value read and 2 for OIDs - input and output)
00381  */
00382 #ifndef MEMP_NUM_SNMP_VALUE
00383 #define MEMP_NUM_SNMP_VALUE             3
00384 #endif
00385 
00386 /**
00387  * MEMP_NUM_NETDB: the number of concurrently running lwip_addrinfo() calls
00388  * (before freeing the corresponding memory using lwip_freeaddrinfo()).
00389  */
00390 #ifndef MEMP_NUM_NETDB
00391 #define MEMP_NUM_NETDB                  1
00392 #endif
00393 
00394 /**
00395  * MEMP_NUM_LOCALHOSTLIST: the number of host entries in the local host list
00396  * if DNS_LOCAL_HOSTLIST_IS_DYNAMIC==1.
00397  */
00398 #ifndef MEMP_NUM_LOCALHOSTLIST
00399 #define MEMP_NUM_LOCALHOSTLIST          1
00400 #endif
00401 
00402 /**
00403  * MEMP_NUM_PPPOE_INTERFACES: the number of concurrently active PPPoE
00404  * interfaces (only used with PPPOE_SUPPORT==1)
00405  */
00406 #ifndef MEMP_NUM_PPPOE_INTERFACES
00407 #define MEMP_NUM_PPPOE_INTERFACES       1
00408 #endif
00409 
00410 /**
00411  * PBUF_POOL_SIZE: the number of buffers in the pbuf pool.
00412  */
00413 #ifndef PBUF_POOL_SIZE
00414 #define PBUF_POOL_SIZE                  16
00415 #endif
00416 
00417 
00418 /* 
00419     -----------------------------
00420     GOOSE IEC 61850 basic support
00421     -----------------------------
00422     by Pellini <elpellini@usp.br>
00423 */
00424 
00425 #define LWIP_GOOSE  1
00426 
00427 /*
00428    ---------------------------------
00429    ---------- ARP options ----------
00430    ---------------------------------
00431 */
00432 /**
00433  * LWIP_ARP==1: Enable ARP functionality.
00434  */
00435 #ifndef LWIP_ARP
00436 #define LWIP_ARP                        1
00437 #endif
00438 
00439 /**
00440  * ARP_TABLE_SIZE: Number of active MAC-IP address pairs cached.
00441  */
00442 #ifndef ARP_TABLE_SIZE
00443 #define ARP_TABLE_SIZE                  10
00444 #endif
00445 
00446 /**
00447  * ARP_QUEUEING==1: Multiple outgoing packets are queued during hardware address
00448  * resolution. By default, only the most recent packet is queued per IP address.
00449  * This is sufficient for most protocols and mainly reduces TCP connection
00450  * startup time. Set this to 1 if you know your application sends more than one
00451  * packet in a row to an IP address that is not in the ARP cache.
00452  */
00453 #ifndef ARP_QUEUEING
00454 #define ARP_QUEUEING                    0
00455 #endif
00456 
00457 /**
00458  * ETHARP_TRUST_IP_MAC==1: Incoming IP packets cause the ARP table to be
00459  * updated with the source MAC and IP addresses supplied in the packet.
00460  * You may want to disable this if you do not trust LAN peers to have the
00461  * correct addresses, or as a limited approach to attempt to handle
00462  * spoofing. If disabled, lwIP will need to make a new ARP request if
00463  * the peer is not already in the ARP table, adding a little latency.
00464  * The peer *is* in the ARP table if it requested our address before.
00465  * Also notice that this slows down input processing of every IP packet!
00466  */
00467 #ifndef ETHARP_TRUST_IP_MAC
00468 #define ETHARP_TRUST_IP_MAC             0
00469 #endif
00470 
00471 /**
00472  * ETHARP_SUPPORT_VLAN==1: support receiving ethernet packets with VLAN header.
00473  * Additionally, you can define ETHARP_VLAN_CHECK to an u16_t VLAN ID to check.
00474  * If ETHARP_VLAN_CHECK is defined, only VLAN-traffic for this VLAN is accepted.
00475  * If ETHARP_VLAN_CHECK is not defined, all traffic is accepted.
00476  * Alternatively, define a function/define ETHARP_VLAN_CHECK_FN(eth_hdr, vlan)
00477  * that returns 1 to accept a packet or 0 to drop a packet.
00478  */
00479 #ifndef ETHARP_SUPPORT_VLAN
00480 #define ETHARP_SUPPORT_VLAN             0
00481 #endif
00482 
00483 /** LWIP_ETHERNET==1: enable ethernet support for PPPoE even though ARP
00484  * might be disabled
00485  */
00486 #ifndef LWIP_ETHERNET
00487 #define LWIP_ETHERNET                   (LWIP_ARP || PPPOE_SUPPORT)
00488 #endif
00489 
00490 /** ETH_PAD_SIZE: number of bytes added before the ethernet header to ensure
00491  * alignment of payload after that header. Since the header is 14 bytes long,
00492  * without this padding e.g. addresses in the IP header will not be aligned
00493  * on a 32-bit boundary, so setting this to 2 can speed up 32-bit-platforms.
00494  */
00495 #ifndef ETH_PAD_SIZE
00496 #define ETH_PAD_SIZE                    0
00497 #endif
00498 
00499 /** ETHARP_SUPPORT_STATIC_ENTRIES==1: enable code to support static ARP table
00500  * entries (using etharp_add_static_entry/etharp_remove_static_entry).
00501  */
00502 #ifndef ETHARP_SUPPORT_STATIC_ENTRIES
00503 #define ETHARP_SUPPORT_STATIC_ENTRIES   0
00504 #endif
00505 
00506 
00507 /*
00508    --------------------------------
00509    ---------- IP options ----------
00510    --------------------------------
00511 */
00512 /**
00513  * IP_FORWARD==1: Enables the ability to forward IP packets across network
00514  * interfaces. If you are going to run lwIP on a device with only one network
00515  * interface, define this to 0.
00516  */
00517 #ifndef IP_FORWARD
00518 #define IP_FORWARD                      0
00519 #endif
00520 
00521 /**
00522  * IP_OPTIONS_ALLOWED: Defines the behavior for IP options.
00523  *      IP_OPTIONS_ALLOWED==0: All packets with IP options are dropped.
00524  *      IP_OPTIONS_ALLOWED==1: IP options are allowed (but not parsed).
00525  */
00526 #ifndef IP_OPTIONS_ALLOWED
00527 #define IP_OPTIONS_ALLOWED              1
00528 #endif
00529 
00530 /**
00531  * IP_REASSEMBLY==1: Reassemble incoming fragmented IP packets. Note that
00532  * this option does not affect outgoing packet sizes, which can be controlled
00533  * via IP_FRAG.
00534  */
00535 #ifndef IP_REASSEMBLY
00536 #define IP_REASSEMBLY                   1
00537 #endif
00538 
00539 /**
00540  * IP_FRAG==1: Fragment outgoing IP packets if their size exceeds MTU. Note
00541  * that this option does not affect incoming packet sizes, which can be
00542  * controlled via IP_REASSEMBLY.
00543  */
00544 #ifndef IP_FRAG
00545 #define IP_FRAG                         1
00546 #endif
00547 
00548 /**
00549  * IP_REASS_MAXAGE: Maximum time (in multiples of IP_TMR_INTERVAL - so seconds, normally)
00550  * a fragmented IP packet waits for all fragments to arrive. If not all fragments arrived
00551  * in this time, the whole packet is discarded.
00552  */
00553 #ifndef IP_REASS_MAXAGE
00554 #define IP_REASS_MAXAGE                 3
00555 #endif
00556 
00557 /**
00558  * IP_REASS_MAX_PBUFS: Total maximum amount of pbufs waiting to be reassembled.
00559  * Since the received pbufs are enqueued, be sure to configure
00560  * PBUF_POOL_SIZE > IP_REASS_MAX_PBUFS so that the stack is still able to receive
00561  * packets even if the maximum amount of fragments is enqueued for reassembly!
00562  */
00563 #ifndef IP_REASS_MAX_PBUFS
00564 #define IP_REASS_MAX_PBUFS              10
00565 #endif
00566 
00567 /**
00568  * IP_FRAG_USES_STATIC_BUF==1: Use a static MTU-sized buffer for IP
00569  * fragmentation. Otherwise pbufs are allocated and reference the original
00570  * packet data to be fragmented (or with LWIP_NETIF_TX_SINGLE_PBUF==1,
00571  * new PBUF_RAM pbufs are used for fragments).
00572  * ATTENTION: IP_FRAG_USES_STATIC_BUF==1 may not be used for DMA-enabled MACs!
00573  */
00574 #ifndef IP_FRAG_USES_STATIC_BUF
00575 #define IP_FRAG_USES_STATIC_BUF         0
00576 #endif
00577 
00578 /**
00579  * IP_FRAG_MAX_MTU: Assumed max MTU on any interface for IP frag buffer
00580  * (requires IP_FRAG_USES_STATIC_BUF==1)
00581  */
00582 #if IP_FRAG_USES_STATIC_BUF && !defined(IP_FRAG_MAX_MTU)
00583 #define IP_FRAG_MAX_MTU                 1500
00584 #endif
00585 
00586 /**
00587  * IP_DEFAULT_TTL: Default value for Time-To-Live used by transport layers.
00588  */
00589 #ifndef IP_DEFAULT_TTL
00590 #define IP_DEFAULT_TTL                  255
00591 #endif
00592 
00593 /**
00594  * IP_SOF_BROADCAST=1: Use the SOF_BROADCAST field to enable broadcast
00595  * filter per pcb on udp and raw send operations. To enable broadcast filter
00596  * on recv operations, you also have to set IP_SOF_BROADCAST_RECV=1.
00597  */
00598 #ifndef IP_SOF_BROADCAST
00599 #define IP_SOF_BROADCAST                0
00600 #endif
00601 
00602 /**
00603  * IP_SOF_BROADCAST_RECV (requires IP_SOF_BROADCAST=1) enable the broadcast
00604  * filter on recv operations.
00605  */
00606 #ifndef IP_SOF_BROADCAST_RECV
00607 #define IP_SOF_BROADCAST_RECV           0
00608 #endif
00609 
00610 /**
00611  * IP_FORWARD_ALLOW_TX_ON_RX_NETIF==1: allow ip_forward() to send packets back
00612  * out on the netif where it was received. This should only be used for
00613  * wireless networks.
00614  * ATTENTION: When this is 1, make sure your netif driver correctly marks incoming
00615  * link-layer-broadcast/multicast packets as such using the corresponding pbuf flags!
00616  */
00617 #ifndef IP_FORWARD_ALLOW_TX_ON_RX_NETIF
00618 #define IP_FORWARD_ALLOW_TX_ON_RX_NETIF 0
00619 #endif
00620 
00621 /**
00622  * LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS==1: randomize the local port for the first
00623  * local TCP/UDP pcb (default==0). This can prevent creating predictable port
00624  * numbers after booting a device.
00625  */
00626 #ifndef LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS
00627 #define LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS 0
00628 #endif
00629 
00630 /*
00631    ----------------------------------
00632    ---------- ICMP options ----------
00633    ----------------------------------
00634 */
00635 /**
00636  * LWIP_ICMP==1: Enable ICMP module inside the IP stack.
00637  * Be careful, disable that make your product non-compliant to RFC1122
00638  */
00639 #ifndef LWIP_ICMP
00640 #define LWIP_ICMP                       1
00641 #endif
00642 
00643 /**
00644  * ICMP_TTL: Default value for Time-To-Live used by ICMP packets.
00645  */
00646 #ifndef ICMP_TTL
00647 #define ICMP_TTL                       (IP_DEFAULT_TTL)
00648 #endif
00649 
00650 /**
00651  * LWIP_BROADCAST_PING==1: respond to broadcast pings (default is unicast only)
00652  */
00653 #ifndef LWIP_BROADCAST_PING
00654 #define LWIP_BROADCAST_PING             0
00655 #endif
00656 
00657 /**
00658  * LWIP_MULTICAST_PING==1: respond to multicast pings (default is unicast only)
00659  */
00660 #ifndef LWIP_MULTICAST_PING
00661 #define LWIP_MULTICAST_PING             0
00662 #endif
00663 
00664 /*
00665    ---------------------------------
00666    ---------- RAW options ----------
00667    ---------------------------------
00668 */
00669 /**
00670  * LWIP_RAW==1: Enable application layer to hook into the IP layer itself.
00671  */
00672 #ifndef LWIP_RAW
00673 #define LWIP_RAW                        1
00674 #endif
00675 
00676 /**
00677  * LWIP_RAW==1: Enable application layer to hook into the IP layer itself.
00678  */
00679 #ifndef RAW_TTL
00680 #define RAW_TTL                        (IP_DEFAULT_TTL)
00681 #endif
00682 
00683 /*
00684    ----------------------------------
00685    ---------- DHCP options ----------
00686    ----------------------------------
00687 */
00688 /**
00689  * LWIP_DHCP==1: Enable DHCP module.
00690  */
00691 #ifndef LWIP_DHCP
00692 #define LWIP_DHCP                       0
00693 #endif
00694 
00695 /**
00696  * DHCP_DOES_ARP_CHECK==1: Do an ARP check on the offered address.
00697  */
00698 #ifndef DHCP_DOES_ARP_CHECK
00699 #define DHCP_DOES_ARP_CHECK             ((LWIP_DHCP) && (LWIP_ARP))
00700 #endif
00701 
00702 /*
00703    ------------------------------------
00704    ---------- AUTOIP options ----------
00705    ------------------------------------
00706 */
00707 /**
00708  * LWIP_AUTOIP==1: Enable AUTOIP module.
00709  */
00710 #ifndef LWIP_AUTOIP
00711 #define LWIP_AUTOIP                     0
00712 #endif
00713 
00714 /**
00715  * LWIP_DHCP_AUTOIP_COOP==1: Allow DHCP and AUTOIP to be both enabled on
00716  * the same interface at the same time.
00717  */
00718 #ifndef LWIP_DHCP_AUTOIP_COOP
00719 #define LWIP_DHCP_AUTOIP_COOP           0
00720 #endif
00721 
00722 /**
00723  * LWIP_DHCP_AUTOIP_COOP_TRIES: Set to the number of DHCP DISCOVER probes
00724  * that should be sent before falling back on AUTOIP. This can be set
00725  * as low as 1 to get an AutoIP address very quickly, but you should
00726  * be prepared to handle a changing IP address when DHCP overrides
00727  * AutoIP.
00728  */
00729 #ifndef LWIP_DHCP_AUTOIP_COOP_TRIES
00730 #define LWIP_DHCP_AUTOIP_COOP_TRIES     9
00731 #endif
00732 
00733 /*
00734    ----------------------------------
00735    ---------- SNMP options ----------
00736    ----------------------------------
00737 */
00738 /**
00739  * LWIP_SNMP==1: Turn on SNMP module. UDP must be available for SNMP
00740  * transport.
00741  */
00742 #ifndef LWIP_SNMP
00743 #define LWIP_SNMP                       0
00744 #endif
00745 
00746 /**
00747  * SNMP_CONCURRENT_REQUESTS: Number of concurrent requests the module will
00748  * allow. At least one request buffer is required.
00749  * Does not have to be changed unless external MIBs answer request asynchronously
00750  */
00751 #ifndef SNMP_CONCURRENT_REQUESTS
00752 #define SNMP_CONCURRENT_REQUESTS        1
00753 #endif
00754 
00755 /**
00756  * SNMP_TRAP_DESTINATIONS: Number of trap destinations. At least one trap
00757  * destination is required
00758  */
00759 #ifndef SNMP_TRAP_DESTINATIONS
00760 #define SNMP_TRAP_DESTINATIONS          1
00761 #endif
00762 
00763 /**
00764  * SNMP_PRIVATE_MIB:
00765  * When using a private MIB, you have to create a file 'private_mib.h' that contains
00766  * a 'struct mib_array_node mib_private' which contains your MIB.
00767  */
00768 #ifndef SNMP_PRIVATE_MIB
00769 #define SNMP_PRIVATE_MIB                0
00770 #endif
00771 
00772 /**
00773  * Only allow SNMP write actions that are 'safe' (e.g. disabeling netifs is not
00774  * a safe action and disabled when SNMP_SAFE_REQUESTS = 1).
00775  * Unsafe requests are disabled by default!
00776  */
00777 #ifndef SNMP_SAFE_REQUESTS
00778 #define SNMP_SAFE_REQUESTS              1
00779 #endif
00780 
00781 /**
00782  * The maximum length of strings used. This affects the size of
00783  * MEMP_SNMP_VALUE elements.
00784  */
00785 #ifndef SNMP_MAX_OCTET_STRING_LEN
00786 #define SNMP_MAX_OCTET_STRING_LEN       127
00787 #endif
00788 
00789 /**
00790  * The maximum depth of the SNMP tree.
00791  * With private MIBs enabled, this depends on your MIB!
00792  * This affects the size of MEMP_SNMP_VALUE elements.
00793  */
00794 #ifndef SNMP_MAX_TREE_DEPTH
00795 #define SNMP_MAX_TREE_DEPTH             15
00796 #endif
00797 
00798 /**
00799  * The size of the MEMP_SNMP_VALUE elements, normally calculated from
00800  * SNMP_MAX_OCTET_STRING_LEN and SNMP_MAX_TREE_DEPTH.
00801  */
00802 #ifndef SNMP_MAX_VALUE_SIZE
00803 #define SNMP_MAX_VALUE_SIZE             LWIP_MAX((SNMP_MAX_OCTET_STRING_LEN)+1, sizeof(s32_t)*(SNMP_MAX_TREE_DEPTH))
00804 #endif
00805 
00806 /*
00807    ----------------------------------
00808    ---------- IGMP options ----------
00809    ----------------------------------
00810 */
00811 /**
00812  * LWIP_IGMP==1: Turn on IGMP module.
00813  */
00814 #ifndef LWIP_IGMP
00815 #define LWIP_IGMP                       0
00816 #endif
00817 
00818 /*
00819    ----------------------------------
00820    ---------- DNS options -----------
00821    ----------------------------------
00822 */
00823 /**
00824  * LWIP_DNS==1: Turn on DNS module. UDP must be available for DNS
00825  * transport.
00826  */
00827 #ifndef LWIP_DNS
00828 #define LWIP_DNS                        0
00829 #endif
00830 
00831 /** DNS maximum number of entries to maintain locally. */
00832 #ifndef DNS_TABLE_SIZE
00833 #define DNS_TABLE_SIZE                  4
00834 #endif
00835 
00836 /** DNS maximum host name length supported in the name table. */
00837 #ifndef DNS_MAX_NAME_LENGTH
00838 #define DNS_MAX_NAME_LENGTH             256
00839 #endif
00840 
00841 /** The maximum of DNS servers */
00842 #ifndef DNS_MAX_SERVERS
00843 #define DNS_MAX_SERVERS                 2
00844 #endif
00845 
00846 /** DNS do a name checking between the query and the response. */
00847 #ifndef DNS_DOES_NAME_CHECK
00848 #define DNS_DOES_NAME_CHECK             1
00849 #endif
00850 
00851 /** DNS message max. size. Default value is RFC compliant. */
00852 #ifndef DNS_MSG_SIZE
00853 #define DNS_MSG_SIZE                    512
00854 #endif
00855 
00856 /** DNS_LOCAL_HOSTLIST: Implements a local host-to-address list. If enabled,
00857  *  you have to define
00858  *    #define DNS_LOCAL_HOSTLIST_INIT {{"host1", 0x123}, {"host2", 0x234}}
00859  *  (an array of structs name/address, where address is an u32_t in network
00860  *  byte order).
00861  *
00862  *  Instead, you can also use an external function:
00863  *  #define DNS_LOOKUP_LOCAL_EXTERN(x) extern u32_t my_lookup_function(const char *name)
00864  *  that returns the IP address or INADDR_NONE if not found.
00865  */
00866 #ifndef DNS_LOCAL_HOSTLIST
00867 #define DNS_LOCAL_HOSTLIST              0
00868 #endif /* DNS_LOCAL_HOSTLIST */
00869 
00870 /** If this is turned on, the local host-list can be dynamically changed
00871  *  at runtime. */
00872 #ifndef DNS_LOCAL_HOSTLIST_IS_DYNAMIC
00873 #define DNS_LOCAL_HOSTLIST_IS_DYNAMIC   0
00874 #endif /* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */
00875 
00876 /*
00877    ---------------------------------
00878    ---------- UDP options ----------
00879    ---------------------------------
00880 */
00881 /**
00882  * LWIP_UDP==1: Turn on UDP.
00883  */
00884 #ifndef LWIP_UDP
00885 #define LWIP_UDP                        1
00886 #endif
00887 
00888 /**
00889  * LWIP_UDPLITE==1: Turn on UDP-Lite. (Requires LWIP_UDP)
00890  */
00891 #ifndef LWIP_UDPLITE
00892 #define LWIP_UDPLITE                    0
00893 #endif
00894 
00895 /**
00896  * UDP_TTL: Default Time-To-Live value.
00897  */
00898 #ifndef UDP_TTL
00899 #define UDP_TTL                         (IP_DEFAULT_TTL)
00900 #endif
00901 
00902 /**
00903  * LWIP_NETBUF_RECVINFO==1: append destination addr and port to every netbuf.
00904  */
00905 #ifndef LWIP_NETBUF_RECVINFO
00906 #define LWIP_NETBUF_RECVINFO            0
00907 #endif
00908 
00909 /*
00910    ---------------------------------
00911    ---------- TCP options ----------
00912    ---------------------------------
00913 */
00914 /**
00915  * LWIP_TCP==1: Turn on TCP.
00916  */
00917 #ifndef LWIP_TCP
00918 #define LWIP_TCP                        1
00919 #endif
00920 
00921 /**
00922  * TCP_TTL: Default Time-To-Live value.
00923  */
00924 #ifndef TCP_TTL
00925 #define TCP_TTL                         (IP_DEFAULT_TTL)
00926 #endif
00927 
00928 /**
00929  * TCP_WND: The size of a TCP window.  This must be at least
00930  * (2 * TCP_MSS) for things to work well
00931  */
00932 #ifndef TCP_WND
00933 #define TCP_WND                         (4 * TCP_MSS)
00934 #endif
00935 
00936 /**
00937  * TCP_MAXRTX: Maximum number of retransmissions of data segments.
00938  */
00939 #ifndef TCP_MAXRTX
00940 #define TCP_MAXRTX                      12
00941 #endif
00942 
00943 /**
00944  * TCP_SYNMAXRTX: Maximum number of retransmissions of SYN segments.
00945  */
00946 #ifndef TCP_SYNMAXRTX
00947 #define TCP_SYNMAXRTX                   6
00948 #endif
00949 
00950 /**
00951  * TCP_QUEUE_OOSEQ==1: TCP will queue segments that arrive out of order.
00952  * Define to 0 if your device is low on memory.
00953  */
00954 #ifndef TCP_QUEUE_OOSEQ
00955 #define TCP_QUEUE_OOSEQ                 (LWIP_TCP)
00956 #endif
00957 
00958 /**
00959  * TCP_MSS: TCP Maximum segment size. (default is 536, a conservative default,
00960  * you might want to increase this.)
00961  * For the receive side, this MSS is advertised to the remote side
00962  * when opening a connection. For the transmit size, this MSS sets
00963  * an upper limit on the MSS advertised by the remote host.
00964  */
00965 #ifndef TCP_MSS
00966 #define TCP_MSS                         536
00967 #endif
00968 
00969 /**
00970  * TCP_CALCULATE_EFF_SEND_MSS: "The maximum size of a segment that TCP really
00971  * sends, the 'effective send MSS,' MUST be the smaller of the send MSS (which
00972  * reflects the available reassembly buffer size at the remote host) and the
00973  * largest size permitted by the IP layer" (RFC 1122)
00974  * Setting this to 1 enables code that checks TCP_MSS against the MTU of the
00975  * netif used for a connection and limits the MSS if it would be too big otherwise.
00976  */
00977 #ifndef TCP_CALCULATE_EFF_SEND_MSS
00978 #define TCP_CALCULATE_EFF_SEND_MSS      1
00979 #endif
00980 
00981 
00982 /**
00983  * TCP_SND_BUF: TCP sender buffer space (bytes).
00984  * To achieve good performance, this should be at least 2 * TCP_MSS.
00985  */
00986 #ifndef TCP_SND_BUF
00987 #define TCP_SND_BUF                     (2 * TCP_MSS)
00988 #endif
00989 
00990 /**
00991  * TCP_SND_QUEUELEN: TCP sender buffer space (pbufs). This must be at least
00992  * as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work.
00993  */
00994 #ifndef TCP_SND_QUEUELEN
00995 #define TCP_SND_QUEUELEN                ((4 * (TCP_SND_BUF) + (TCP_MSS - 1))/(TCP_MSS))
00996 #endif
00997 
00998 /**
00999  * TCP_SNDLOWAT: TCP writable space (bytes). This must be less than
01000  * TCP_SND_BUF. It is the amount of space which must be available in the
01001  * TCP snd_buf for select to return writable (combined with TCP_SNDQUEUELOWAT).
01002  */
01003 #ifndef TCP_SNDLOWAT
01004 #define TCP_SNDLOWAT                    LWIP_MIN(LWIP_MAX(((TCP_SND_BUF)/2), (2 * TCP_MSS) + 1), (TCP_SND_BUF) - 1)
01005 #endif
01006 
01007 /**
01008  * TCP_SNDQUEUELOWAT: TCP writable bufs (pbuf count). This must be less
01009  * than TCP_SND_QUEUELEN. If the number of pbufs queued on a pcb drops below
01010  * this number, select returns writable (combined with TCP_SNDLOWAT).
01011  */
01012 #ifndef TCP_SNDQUEUELOWAT
01013 #define TCP_SNDQUEUELOWAT               LWIP_MAX(((TCP_SND_QUEUELEN)/2), 5)
01014 #endif
01015 
01016 /**
01017  * TCP_OOSEQ_MAX_BYTES: The maximum number of bytes queued on ooseq per pcb.
01018  * Default is 0 (no limit). Only valid for TCP_QUEUE_OOSEQ==0.
01019  */
01020 #ifndef TCP_OOSEQ_MAX_BYTES
01021 #define TCP_OOSEQ_MAX_BYTES             0
01022 #endif
01023 
01024 /**
01025  * TCP_OOSEQ_MAX_PBUFS: The maximum number of pbufs queued on ooseq per pcb.
01026  * Default is 0 (no limit). Only valid for TCP_QUEUE_OOSEQ==0.
01027  */
01028 #ifndef TCP_OOSEQ_MAX_PBUFS
01029 #define TCP_OOSEQ_MAX_PBUFS             0
01030 #endif
01031 
01032 /**
01033  * TCP_LISTEN_BACKLOG: Enable the backlog option for tcp listen pcb.
01034  */
01035 #ifndef TCP_LISTEN_BACKLOG
01036 #define TCP_LISTEN_BACKLOG              0
01037 #endif
01038 
01039 /**
01040  * The maximum allowed backlog for TCP listen netconns.
01041  * This backlog is used unless another is explicitly specified.
01042  * 0xff is the maximum (u8_t).
01043  */
01044 #ifndef TCP_DEFAULT_LISTEN_BACKLOG
01045 #define TCP_DEFAULT_LISTEN_BACKLOG      0xff
01046 #endif
01047 
01048 /**
01049  * TCP_OVERSIZE: The maximum number of bytes that tcp_write may
01050  * allocate ahead of time in an attempt to create shorter pbuf chains
01051  * for transmission. The meaningful range is 0 to TCP_MSS. Some
01052  * suggested values are:
01053  *
01054  * 0:         Disable oversized allocation. Each tcp_write() allocates a new
01055               pbuf (old behaviour).
01056  * 1:         Allocate size-aligned pbufs with minimal excess. Use this if your
01057  *            scatter-gather DMA requires aligned fragments.
01058  * 128:       Limit the pbuf/memory overhead to 20%.
01059  * TCP_MSS:   Try to create unfragmented TCP packets.
01060  * TCP_MSS/4: Try to create 4 fragments or less per TCP packet.
01061  */
01062 #ifndef TCP_OVERSIZE
01063 #define TCP_OVERSIZE                    TCP_MSS
01064 #endif
01065 
01066 /**
01067  * LWIP_TCP_TIMESTAMPS==1: support the TCP timestamp option.
01068  */
01069 #ifndef LWIP_TCP_TIMESTAMPS
01070 #define LWIP_TCP_TIMESTAMPS             0
01071 #endif
01072 
01073 /**
01074  * TCP_WND_UPDATE_THRESHOLD: difference in window to trigger an
01075  * explicit window update
01076  */
01077 #ifndef TCP_WND_UPDATE_THRESHOLD
01078 #define TCP_WND_UPDATE_THRESHOLD   (TCP_WND / 4)
01079 #endif
01080 
01081 /**
01082  * LWIP_EVENT_API and LWIP_CALLBACK_API: Only one of these should be set to 1.
01083  *     LWIP_EVENT_API==1: The user defines lwip_tcp_event() to receive all
01084  *         events (accept, sent, etc) that happen in the system.
01085  *     LWIP_CALLBACK_API==1: The PCB callback function is called directly
01086  *         for the event. This is the default.
01087  */
01088 #if !defined(LWIP_EVENT_API) && !defined(LWIP_CALLBACK_API)
01089 #define LWIP_EVENT_API                  0
01090 #define LWIP_CALLBACK_API               1
01091 #endif
01092 
01093 
01094 /*
01095    ----------------------------------
01096    ---------- Pbuf options ----------
01097    ----------------------------------
01098 */
01099 /**
01100  * PBUF_LINK_HLEN: the number of bytes that should be allocated for a
01101  * link level header. The default is 14, the standard value for
01102  * Ethernet.
01103  */
01104 #ifndef PBUF_LINK_HLEN
01105 #define PBUF_LINK_HLEN                  (14 + ETH_PAD_SIZE)
01106 #endif
01107 
01108 /**
01109  * PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. The default is
01110  * designed to accomodate single full size TCP frame in one pbuf, including
01111  * TCP_MSS, IP header, and link header.
01112  */
01113 #ifndef PBUF_POOL_BUFSIZE
01114 #define PBUF_POOL_BUFSIZE               LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_HLEN)
01115 #endif
01116 
01117 /*
01118    ------------------------------------------------
01119    ---------- Network Interfaces options ----------
01120    ------------------------------------------------
01121 */
01122 /**
01123  * LWIP_NETIF_HOSTNAME==1: use DHCP_OPTION_HOSTNAME with netif's hostname
01124  * field.
01125  */
01126 #ifndef LWIP_NETIF_HOSTNAME
01127 #define LWIP_NETIF_HOSTNAME             0
01128 #endif
01129 
01130 /**
01131  * LWIP_NETIF_API==1: Support netif api (in netifapi.c)
01132  */
01133 #ifndef LWIP_NETIF_API
01134 #define LWIP_NETIF_API                  0
01135 #endif
01136 
01137 /**
01138  * LWIP_NETIF_STATUS_CALLBACK==1: Support a callback function whenever an interface
01139  * changes its up/down status (i.e., due to DHCP IP acquistion)
01140  */
01141 #ifndef LWIP_NETIF_STATUS_CALLBACK
01142 #define LWIP_NETIF_STATUS_CALLBACK      0
01143 #endif
01144 
01145 /**
01146  * LWIP_NETIF_LINK_CALLBACK==1: Support a callback function from an interface
01147  * whenever the link changes (i.e., link down)
01148  */
01149 #ifndef LWIP_NETIF_LINK_CALLBACK
01150 #define LWIP_NETIF_LINK_CALLBACK        0
01151 #endif
01152 
01153 /**
01154  * LWIP_NETIF_REMOVE_CALLBACK==1: Support a callback function that is called
01155  * when a netif has been removed
01156  */
01157 #ifndef LWIP_NETIF_REMOVE_CALLBACK
01158 #define LWIP_NETIF_REMOVE_CALLBACK      0
01159 #endif
01160 
01161 /**
01162  * LWIP_NETIF_HWADDRHINT==1: Cache link-layer-address hints (e.g. table
01163  * indices) in struct netif. TCP and UDP can make use of this to prevent
01164  * scanning the ARP table for every sent packet. While this is faster for big
01165  * ARP tables or many concurrent connections, it might be counterproductive
01166  * if you have a tiny ARP table or if there never are concurrent connections.
01167  */
01168 #ifndef LWIP_NETIF_HWADDRHINT
01169 #define LWIP_NETIF_HWADDRHINT           0
01170 #endif
01171 
01172 /**
01173  * LWIP_NETIF_LOOPBACK==1: Support sending packets with a destination IP
01174  * address equal to the netif IP address, looping them back up the stack.
01175  */
01176 #ifndef LWIP_NETIF_LOOPBACK
01177 #define LWIP_NETIF_LOOPBACK             0
01178 #endif
01179 
01180 /**
01181  * LWIP_LOOPBACK_MAX_PBUFS: Maximum number of pbufs on queue for loopback
01182  * sending for each netif (0 = disabled)
01183  */
01184 #ifndef LWIP_LOOPBACK_MAX_PBUFS
01185 #define LWIP_LOOPBACK_MAX_PBUFS         0
01186 #endif
01187 
01188 /**
01189  * LWIP_NETIF_LOOPBACK_MULTITHREADING: Indicates whether threading is enabled in
01190  * the system, as netifs must change how they behave depending on this setting
01191  * for the LWIP_NETIF_LOOPBACK option to work.
01192  * Setting this is needed to avoid reentering non-reentrant functions like
01193  * tcp_input().
01194  *    LWIP_NETIF_LOOPBACK_MULTITHREADING==1: Indicates that the user is using a
01195  *       multithreaded environment like tcpip.c. In this case, netif->input()
01196  *       is called directly.
01197  *    LWIP_NETIF_LOOPBACK_MULTITHREADING==0: Indicates a polling (or NO_SYS) setup.
01198  *       The packets are put on a list and netif_poll() must be called in
01199  *       the main application loop.
01200  */
01201 #ifndef LWIP_NETIF_LOOPBACK_MULTITHREADING
01202 #define LWIP_NETIF_LOOPBACK_MULTITHREADING    (!NO_SYS)
01203 #endif
01204 
01205 /**
01206  * LWIP_NETIF_TX_SINGLE_PBUF: if this is set to 1, lwIP tries to put all data
01207  * to be sent into one single pbuf. This is for compatibility with DMA-enabled
01208  * MACs that do not support scatter-gather.
01209  * Beware that this might involve CPU-memcpy before transmitting that would not
01210  * be needed without this flag! Use this only if you need to!
01211  *
01212  * @todo: TCP and IP-frag do not work with this, yet:
01213  */
01214 #ifndef LWIP_NETIF_TX_SINGLE_PBUF
01215 #define LWIP_NETIF_TX_SINGLE_PBUF             0
01216 #endif /* LWIP_NETIF_TX_SINGLE_PBUF */
01217 
01218 /*
01219    ------------------------------------
01220    ---------- LOOPIF options ----------
01221    ------------------------------------
01222 */
01223 /**
01224  * LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1) and loopif.c
01225  */
01226 #ifndef LWIP_HAVE_LOOPIF
01227 #define LWIP_HAVE_LOOPIF                0
01228 #endif
01229 
01230 /*
01231    ------------------------------------
01232    ---------- SLIPIF options ----------
01233    ------------------------------------
01234 */
01235 /**
01236  * LWIP_HAVE_SLIPIF==1: Support slip interface and slipif.c
01237  */
01238 #ifndef LWIP_HAVE_SLIPIF
01239 #define LWIP_HAVE_SLIPIF                0
01240 #endif
01241 
01242 /*
01243    ------------------------------------
01244    ---------- Thread options ----------
01245    ------------------------------------
01246 */
01247 /**
01248  * TCPIP_THREAD_NAME: The name assigned to the main tcpip thread.
01249  */
01250 #ifndef TCPIP_THREAD_NAME
01251 #define TCPIP_THREAD_NAME              "tcpip_thread"
01252 #endif
01253 
01254 /**
01255  * TCPIP_THREAD_STACKSIZE: The stack size used by the main tcpip thread.
01256  * The stack size value itself is platform-dependent, but is passed to
01257  * sys_thread_new() when the thread is created.
01258  */
01259 #ifndef TCPIP_THREAD_STACKSIZE
01260 #define TCPIP_THREAD_STACKSIZE          0
01261 #endif
01262 
01263 /**
01264  * TCPIP_THREAD_PRIO: The priority assigned to the main tcpip thread.
01265  * The priority value itself is platform-dependent, but is passed to
01266  * sys_thread_new() when the thread is created.
01267  */
01268 #ifndef TCPIP_THREAD_PRIO
01269 #define TCPIP_THREAD_PRIO               1
01270 #endif
01271 
01272 /**
01273  * TCPIP_MBOX_SIZE: The mailbox size for the tcpip thread messages
01274  * The queue size value itself is platform-dependent, but is passed to
01275  * sys_mbox_new() when tcpip_init is called.
01276  */
01277 #ifndef TCPIP_MBOX_SIZE
01278 #define TCPIP_MBOX_SIZE                 0
01279 #endif
01280 
01281 /**
01282  * SLIPIF_THREAD_NAME: The name assigned to the slipif_loop thread.
01283  */
01284 #ifndef SLIPIF_THREAD_NAME
01285 #define SLIPIF_THREAD_NAME             "slipif_loop"
01286 #endif
01287 
01288 /**
01289  * SLIP_THREAD_STACKSIZE: The stack size used by the slipif_loop thread.
01290  * The stack size value itself is platform-dependent, but is passed to
01291  * sys_thread_new() when the thread is created.
01292  */
01293 #ifndef SLIPIF_THREAD_STACKSIZE
01294 #define SLIPIF_THREAD_STACKSIZE         0
01295 #endif
01296 
01297 /**
01298  * SLIPIF_THREAD_PRIO: The priority assigned to the slipif_loop thread.
01299  * The priority value itself is platform-dependent, but is passed to
01300  * sys_thread_new() when the thread is created.
01301  */
01302 #ifndef SLIPIF_THREAD_PRIO
01303 #define SLIPIF_THREAD_PRIO              1
01304 #endif
01305 
01306 /**
01307  * PPP_THREAD_NAME: The name assigned to the pppInputThread.
01308  */
01309 #ifndef PPP_THREAD_NAME
01310 #define PPP_THREAD_NAME                "pppInputThread"
01311 #endif
01312 
01313 /**
01314  * PPP_THREAD_STACKSIZE: The stack size used by the pppInputThread.
01315  * The stack size value itself is platform-dependent, but is passed to
01316  * sys_thread_new() when the thread is created.
01317  */
01318 #ifndef PPP_THREAD_STACKSIZE
01319 #define PPP_THREAD_STACKSIZE            0
01320 #endif
01321 
01322 /**
01323  * PPP_THREAD_PRIO: The priority assigned to the pppInputThread.
01324  * The priority value itself is platform-dependent, but is passed to
01325  * sys_thread_new() when the thread is created.
01326  */
01327 #ifndef PPP_THREAD_PRIO
01328 #define PPP_THREAD_PRIO                 1
01329 #endif
01330 
01331 /**
01332  * DEFAULT_THREAD_NAME: The name assigned to any other lwIP thread.
01333  */
01334 #ifndef DEFAULT_THREAD_NAME
01335 #define DEFAULT_THREAD_NAME            "lwIP"
01336 #endif
01337 
01338 /**
01339  * DEFAULT_THREAD_STACKSIZE: The stack size used by any other lwIP thread.
01340  * The stack size value itself is platform-dependent, but is passed to
01341  * sys_thread_new() when the thread is created.
01342  */
01343 #ifndef DEFAULT_THREAD_STACKSIZE
01344 #define DEFAULT_THREAD_STACKSIZE        0
01345 #endif
01346 
01347 /**
01348  * DEFAULT_THREAD_PRIO: The priority assigned to any other lwIP thread.
01349  * The priority value itself is platform-dependent, but is passed to
01350  * sys_thread_new() when the thread is created.
01351  */
01352 #ifndef DEFAULT_THREAD_PRIO
01353 #define DEFAULT_THREAD_PRIO             1
01354 #endif
01355 
01356 /**
01357  * DEFAULT_RAW_RECVMBOX_SIZE: The mailbox size for the incoming packets on a
01358  * NETCONN_RAW. The queue size value itself is platform-dependent, but is passed
01359  * to sys_mbox_new() when the recvmbox is created.
01360  */
01361 #ifndef DEFAULT_RAW_RECVMBOX_SIZE
01362 #define DEFAULT_RAW_RECVMBOX_SIZE       0
01363 #endif
01364 
01365 /**
01366  * DEFAULT_UDP_RECVMBOX_SIZE: The mailbox size for the incoming packets on a
01367  * NETCONN_UDP. The queue size value itself is platform-dependent, but is passed
01368  * to sys_mbox_new() when the recvmbox is created.
01369  */
01370 #ifndef DEFAULT_UDP_RECVMBOX_SIZE
01371 #define DEFAULT_UDP_RECVMBOX_SIZE       0
01372 #endif
01373 
01374 /**
01375  * DEFAULT_TCP_RECVMBOX_SIZE: The mailbox size for the incoming packets on a
01376  * NETCONN_TCP. The queue size value itself is platform-dependent, but is passed
01377  * to sys_mbox_new() when the recvmbox is created.
01378  */
01379 #ifndef DEFAULT_TCP_RECVMBOX_SIZE
01380 #define DEFAULT_TCP_RECVMBOX_SIZE       0
01381 #endif
01382 
01383 /**
01384  * DEFAULT_ACCEPTMBOX_SIZE: The mailbox size for the incoming connections.
01385  * The queue size value itself is platform-dependent, but is passed to
01386  * sys_mbox_new() when the acceptmbox is created.
01387  */
01388 #ifndef DEFAULT_ACCEPTMBOX_SIZE
01389 #define DEFAULT_ACCEPTMBOX_SIZE         0
01390 #endif
01391 
01392 /*
01393    ----------------------------------------------
01394    ---------- Sequential layer options ----------
01395    ----------------------------------------------
01396 */
01397 /**
01398  * LWIP_TCPIP_CORE_LOCKING: (EXPERIMENTAL!)
01399  * Don't use it if you're not an active lwIP project member
01400  */
01401 #ifndef LWIP_TCPIP_CORE_LOCKING
01402 #define LWIP_TCPIP_CORE_LOCKING         0
01403 #endif
01404 
01405 /**
01406  * LWIP_TCPIP_CORE_LOCKING_INPUT: (EXPERIMENTAL!)
01407  * Don't use it if you're not an active lwIP project member
01408  */
01409 #ifndef LWIP_TCPIP_CORE_LOCKING_INPUT
01410 #define LWIP_TCPIP_CORE_LOCKING_INPUT   0
01411 #endif
01412 
01413 /**
01414  * LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c)
01415  */
01416 #ifndef LWIP_NETCONN
01417 #define LWIP_NETCONN                    1
01418 #endif
01419 
01420 /** LWIP_TCPIP_TIMEOUT==1: Enable tcpip_timeout/tcpip_untimeout tod create
01421  * timers running in tcpip_thread from another thread.
01422  */
01423 #ifndef LWIP_TCPIP_TIMEOUT
01424 #define LWIP_TCPIP_TIMEOUT              1
01425 #endif
01426 
01427 /*
01428    ------------------------------------
01429    ---------- Socket options ----------
01430    ------------------------------------
01431 */
01432 /**
01433  * LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)
01434  */
01435 #ifndef LWIP_SOCKET
01436 #define LWIP_SOCKET                     1
01437 #endif
01438 
01439 /**
01440  * LWIP_COMPAT_SOCKETS==1: Enable BSD-style sockets functions names.
01441  * (only used if you use sockets.c)
01442  */
01443 #ifndef LWIP_COMPAT_SOCKETS
01444 #define LWIP_COMPAT_SOCKETS             0
01445 #endif
01446 
01447 /**
01448  * LWIP_POSIX_SOCKETS_IO_NAMES==1: Enable POSIX-style sockets functions names.
01449  * Disable this option if you use a POSIX operating system that uses the same
01450  * names (read, write & close). (only used if you use sockets.c)
01451  */
01452 #ifndef LWIP_POSIX_SOCKETS_IO_NAMES
01453 #define LWIP_POSIX_SOCKETS_IO_NAMES     0
01454 #endif
01455 
01456 /**
01457  * LWIP_TCP_KEEPALIVE==1: Enable TCP_KEEPIDLE, TCP_KEEPINTVL and TCP_KEEPCNT
01458  * options processing. Note that TCP_KEEPIDLE and TCP_KEEPINTVL have to be set
01459  * in seconds. (does not require sockets.c, and will affect tcp.c)
01460  */
01461 #ifndef LWIP_TCP_KEEPALIVE
01462 #define LWIP_TCP_KEEPALIVE              0
01463 #endif
01464 
01465 /**
01466  * LWIP_SO_SNDTIMEO==1: Enable send timeout for sockets/netconns and
01467  * SO_SNDTIMEO processing.
01468  */
01469 #ifndef LWIP_SO_SNDTIMEO
01470 #define LWIP_SO_SNDTIMEO                0
01471 #endif
01472 
01473 /**
01474  * LWIP_SO_RCVTIMEO==1: Enable receive timeout for sockets/netconns and
01475  * SO_RCVTIMEO processing.
01476  */
01477 #ifndef LWIP_SO_RCVTIMEO
01478 #define LWIP_SO_RCVTIMEO                0
01479 #endif
01480 
01481 /**
01482  * LWIP_SO_RCVBUF==1: Enable SO_RCVBUF processing.
01483  */
01484 #ifndef LWIP_SO_RCVBUF
01485 #define LWIP_SO_RCVBUF                  0
01486 #endif
01487 
01488 /**
01489  * If LWIP_SO_RCVBUF is used, this is the default value for recv_bufsize.
01490  */
01491 #ifndef RECV_BUFSIZE_DEFAULT
01492 #define RECV_BUFSIZE_DEFAULT            INT_MAX
01493 #endif
01494 
01495 /**
01496  * SO_REUSE==1: Enable SO_REUSEADDR option.
01497  */
01498 #ifndef SO_REUSE
01499 #define SO_REUSE                        0
01500 #endif
01501 
01502 /**
01503  * SO_REUSE_RXTOALL==1: Pass a copy of incoming broadcast/multicast packets
01504  * to all local matches if SO_REUSEADDR is turned on.
01505  * WARNING: Adds a memcpy for every packet if passing to more than one pcb!
01506  */
01507 #ifndef SO_REUSE_RXTOALL
01508 #define SO_REUSE_RXTOALL                0
01509 #endif
01510 
01511 /*
01512    ----------------------------------------
01513    ---------- Statistics options ----------
01514    ----------------------------------------
01515 */
01516 /**
01517  * LWIP_STATS==1: Enable statistics collection in lwip_stats.
01518  */
01519 #ifndef LWIP_STATS
01520 #define LWIP_STATS                      1
01521 #endif
01522 
01523 #if LWIP_STATS
01524 
01525 /**
01526  * LWIP_STATS_DISPLAY==1: Compile in the statistics output functions.
01527  */
01528 #ifndef LWIP_STATS_DISPLAY
01529 #define LWIP_STATS_DISPLAY              0
01530 #endif
01531 
01532 /**
01533  * LINK_STATS==1: Enable link stats.
01534  */
01535 #ifndef LINK_STATS
01536 #define LINK_STATS                      1
01537 #endif
01538 
01539 /**
01540  * ETHARP_STATS==1: Enable etharp stats.
01541  */
01542 #ifndef ETHARP_STATS
01543 #define ETHARP_STATS                    (LWIP_ARP)
01544 #endif
01545 
01546 /**
01547  * IP_STATS==1: Enable IP stats.
01548  */
01549 #ifndef IP_STATS
01550 #define IP_STATS                        1
01551 #endif
01552 
01553 /**
01554  * IPFRAG_STATS==1: Enable IP fragmentation stats. Default is
01555  * on if using either frag or reass.
01556  */
01557 #ifndef IPFRAG_STATS
01558 #define IPFRAG_STATS                    (IP_REASSEMBLY || IP_FRAG)
01559 #endif
01560 
01561 /**
01562  * ICMP_STATS==1: Enable ICMP stats.
01563  */
01564 #ifndef ICMP_STATS
01565 #define ICMP_STATS                      1
01566 #endif
01567 
01568 /**
01569  * IGMP_STATS==1: Enable IGMP stats.
01570  */
01571 #ifndef IGMP_STATS
01572 #define IGMP_STATS                      (LWIP_IGMP)
01573 #endif
01574 
01575 /**
01576  * UDP_STATS==1: Enable UDP stats. Default is on if
01577  * UDP enabled, otherwise off.
01578  */
01579 #ifndef UDP_STATS
01580 #define UDP_STATS                       (LWIP_UDP)
01581 #endif
01582 
01583 /**
01584  * TCP_STATS==1: Enable TCP stats. Default is on if TCP
01585  * enabled, otherwise off.
01586  */
01587 #ifndef TCP_STATS
01588 #define TCP_STATS                       (LWIP_TCP)
01589 #endif
01590 
01591 /**
01592  * MEM_STATS==1: Enable mem.c stats.
01593  */
01594 #ifndef MEM_STATS
01595 #define MEM_STATS                       ((MEM_LIBC_MALLOC == 0) && (MEM_USE_POOLS == 0))
01596 #endif
01597 
01598 /**
01599  * MEMP_STATS==1: Enable memp.c pool stats.
01600  */
01601 #ifndef MEMP_STATS
01602 #define MEMP_STATS                      (MEMP_MEM_MALLOC == 0)
01603 #endif
01604 
01605 /**
01606  * SYS_STATS==1: Enable system stats (sem and mbox counts, etc).
01607  */
01608 #ifndef SYS_STATS
01609 #define SYS_STATS                       (NO_SYS == 0)
01610 #endif
01611 
01612 #else
01613 
01614 #define LINK_STATS                      0
01615 #define IP_STATS                        0
01616 #define IPFRAG_STATS                    0
01617 #define ICMP_STATS                      0
01618 #define IGMP_STATS                      0
01619 #define UDP_STATS                       0
01620 #define TCP_STATS                       0
01621 #define MEM_STATS                       0
01622 #define MEMP_STATS                      0
01623 #define SYS_STATS                       0
01624 #define LWIP_STATS_DISPLAY              0
01625 
01626 #endif /* LWIP_STATS */
01627 
01628 /*
01629    ---------------------------------
01630    ---------- PPP options ----------
01631    ---------------------------------
01632 */
01633 /**
01634  * PPP_SUPPORT==1: Enable PPP.
01635  */
01636 #ifndef PPP_SUPPORT
01637 #define PPP_SUPPORT                     0
01638 #endif
01639 
01640 /**
01641  * PPPOE_SUPPORT==1: Enable PPP Over Ethernet
01642  */
01643 #ifndef PPPOE_SUPPORT
01644 #define PPPOE_SUPPORT                   0
01645 #endif
01646 
01647 /**
01648  * PPPOS_SUPPORT==1: Enable PPP Over Serial
01649  */
01650 #ifndef PPPOS_SUPPORT
01651 #define PPPOS_SUPPORT                   PPP_SUPPORT
01652 #endif
01653 
01654 #if PPP_SUPPORT
01655 
01656 /**
01657  * NUM_PPP: Max PPP sessions.
01658  */
01659 #ifndef NUM_PPP
01660 #define NUM_PPP                         1
01661 #endif
01662 
01663 /**
01664  * PAP_SUPPORT==1: Support PAP.
01665  */
01666 #ifndef PAP_SUPPORT
01667 #define PAP_SUPPORT                     0
01668 #endif
01669 
01670 /**
01671  * CHAP_SUPPORT==1: Support CHAP.
01672  */
01673 #ifndef CHAP_SUPPORT
01674 #define CHAP_SUPPORT                    0
01675 #endif
01676 
01677 /**
01678  * MSCHAP_SUPPORT==1: Support MSCHAP. CURRENTLY NOT SUPPORTED! DO NOT SET!
01679  */
01680 #ifndef MSCHAP_SUPPORT
01681 #define MSCHAP_SUPPORT                  0
01682 #endif
01683 
01684 /**
01685  * CBCP_SUPPORT==1: Support CBCP. CURRENTLY NOT SUPPORTED! DO NOT SET!
01686  */
01687 #ifndef CBCP_SUPPORT
01688 #define CBCP_SUPPORT                    0
01689 #endif
01690 
01691 /**
01692  * CCP_SUPPORT==1: Support CCP. CURRENTLY NOT SUPPORTED! DO NOT SET!
01693  */
01694 #ifndef CCP_SUPPORT
01695 #define CCP_SUPPORT                     0
01696 #endif
01697 
01698 /**
01699  * VJ_SUPPORT==1: Support VJ header compression.
01700  */
01701 #ifndef VJ_SUPPORT
01702 #define VJ_SUPPORT                      0
01703 #endif
01704 
01705 /**
01706  * MD5_SUPPORT==1: Support MD5 (see also CHAP).
01707  */
01708 #ifndef MD5_SUPPORT
01709 #define MD5_SUPPORT                     0
01710 #endif
01711 
01712 /*
01713  * Timeouts
01714  */
01715 #ifndef FSM_DEFTIMEOUT
01716 #define FSM_DEFTIMEOUT                  6       /* Timeout time in seconds */
01717 #endif
01718 
01719 #ifndef FSM_DEFMAXTERMREQS
01720 #define FSM_DEFMAXTERMREQS              2       /* Maximum Terminate-Request transmissions */
01721 #endif
01722 
01723 #ifndef FSM_DEFMAXCONFREQS
01724 #define FSM_DEFMAXCONFREQS              10      /* Maximum Configure-Request transmissions */
01725 #endif
01726 
01727 #ifndef FSM_DEFMAXNAKLOOPS
01728 #define FSM_DEFMAXNAKLOOPS              5       /* Maximum number of nak loops */
01729 #endif
01730 
01731 #ifndef UPAP_DEFTIMEOUT
01732 #define UPAP_DEFTIMEOUT                 6       /* Timeout (seconds) for retransmitting req */
01733 #endif
01734 
01735 #ifndef UPAP_DEFREQTIME
01736 #define UPAP_DEFREQTIME                 30      /* Time to wait for auth-req from peer */
01737 #endif
01738 
01739 #ifndef CHAP_DEFTIMEOUT
01740 #define CHAP_DEFTIMEOUT                 6       /* Timeout time in seconds */
01741 #endif
01742 
01743 #ifndef CHAP_DEFTRANSMITS
01744 #define CHAP_DEFTRANSMITS               10      /* max # times to send challenge */
01745 #endif
01746 
01747 /* Interval in seconds between keepalive echo requests, 0 to disable. */
01748 #ifndef LCP_ECHOINTERVAL
01749 #define LCP_ECHOINTERVAL                0
01750 #endif
01751 
01752 /* Number of unanswered echo requests before failure. */
01753 #ifndef LCP_MAXECHOFAILS
01754 #define LCP_MAXECHOFAILS                3
01755 #endif
01756 
01757 /* Max Xmit idle time (in jiffies) before resend flag char. */
01758 #ifndef PPP_MAXIDLEFLAG
01759 #define PPP_MAXIDLEFLAG                 100
01760 #endif
01761 
01762 /*
01763  * Packet sizes
01764  *
01765  * Note - lcp shouldn't be allowed to negotiate stuff outside these
01766  *    limits.  See lcp.h in the pppd directory.
01767  * (XXX - these constants should simply be shared by lcp.c instead
01768  *    of living in lcp.h)
01769  */
01770 #define PPP_MTU                         1500     /* Default MTU (size of Info field) */
01771 #ifndef PPP_MAXMTU
01772 /* #define PPP_MAXMTU  65535 - (PPP_HDRLEN + PPP_FCSLEN) */
01773 #define PPP_MAXMTU                      1500 /* Largest MTU we allow */
01774 #endif
01775 #define PPP_MINMTU                      64
01776 #define PPP_MRU                         1500     /* default MRU = max length of info field */
01777 #define PPP_MAXMRU                      1500     /* Largest MRU we allow */
01778 #ifndef PPP_DEFMRU
01779 #define PPP_DEFMRU                      296             /* Try for this */
01780 #endif
01781 #define PPP_MINMRU                      128             /* No MRUs below this */
01782 
01783 #ifndef MAXNAMELEN
01784 #define MAXNAMELEN                      256     /* max length of hostname or name for auth */
01785 #endif
01786 #ifndef MAXSECRETLEN
01787 #define MAXSECRETLEN                    256     /* max length of password or secret */
01788 #endif
01789 
01790 #endif /* PPP_SUPPORT */
01791 
01792 /*
01793    --------------------------------------
01794    ---------- Checksum options ----------
01795    --------------------------------------
01796 */
01797 /**
01798  * CHECKSUM_GEN_IP==1: Generate checksums in software for outgoing IP packets.
01799  */
01800 #ifndef CHECKSUM_GEN_IP
01801 #define CHECKSUM_GEN_IP                 1
01802 #endif
01803 
01804 /**
01805  * CHECKSUM_GEN_UDP==1: Generate checksums in software for outgoing UDP packets.
01806  */
01807 #ifndef CHECKSUM_GEN_UDP
01808 #define CHECKSUM_GEN_UDP                1
01809 #endif
01810 
01811 /**
01812  * CHECKSUM_GEN_TCP==1: Generate checksums in software for outgoing TCP packets.
01813  */
01814 #ifndef CHECKSUM_GEN_TCP
01815 #define CHECKSUM_GEN_TCP                1
01816 #endif
01817 
01818 /**
01819  * CHECKSUM_GEN_ICMP==1: Generate checksums in software for outgoing ICMP packets.
01820  */
01821 #ifndef CHECKSUM_GEN_ICMP
01822 #define CHECKSUM_GEN_ICMP               1
01823 #endif
01824 
01825 /**
01826  * CHECKSUM_CHECK_IP==1: Check checksums in software for incoming IP packets.
01827  */
01828 #ifndef CHECKSUM_CHECK_IP
01829 #define CHECKSUM_CHECK_IP               1
01830 #endif
01831 
01832 /**
01833  * CHECKSUM_CHECK_UDP==1: Check checksums in software for incoming UDP packets.
01834  */
01835 #ifndef CHECKSUM_CHECK_UDP
01836 #define CHECKSUM_CHECK_UDP              1
01837 #endif
01838 
01839 /**
01840  * CHECKSUM_CHECK_TCP==1: Check checksums in software for incoming TCP packets.
01841  */
01842 #ifndef CHECKSUM_CHECK_TCP
01843 #define CHECKSUM_CHECK_TCP              1
01844 #endif
01845 
01846 /**
01847  * LWIP_CHECKSUM_ON_COPY==1: Calculate checksum when copying data from
01848  * application buffers to pbufs.
01849  */
01850 #ifndef LWIP_CHECKSUM_ON_COPY
01851 #define LWIP_CHECKSUM_ON_COPY           0
01852 #endif
01853 
01854 /*
01855    ---------------------------------------
01856    ---------- Hook options ---------------
01857    ---------------------------------------
01858 */
01859 
01860 /* Hooks are undefined by default, define them to a function if you need them. */
01861 
01862 /**
01863  * LWIP_HOOK_IP4_INPUT(pbuf, input_netif):
01864  * - called from ip_input() (IPv4)
01865  * - pbuf: received struct pbuf passed to ip_input()
01866  * - input_netif: struct netif on which the packet has been received
01867  * Return values:
01868  * - 0: Hook has not consumed the packet, packet is processed as normal
01869  * - != 0: Hook has consumed the packet.
01870  * If the hook consumed the packet, 'pbuf' is in the responsibility of the hook
01871  * (i.e. free it when done).
01872  */
01873 
01874 /**
01875  * LWIP_HOOK_IP4_ROUTE(dest):
01876  * - called from ip_route() (IPv4)
01877  * - dest: destination IPv4 address
01878  * Returns the destination netif or NULL if no destination netif is found. In
01879  * that case, ip_route() continues as normal.
01880  */
01881 
01882 /*
01883    ---------------------------------------
01884    ---------- Debugging options ----------
01885    ---------------------------------------
01886 */
01887 /**
01888  * LWIP_DBG_MIN_LEVEL: After masking, the value of the debug is
01889  * compared against this value. If it is smaller, then debugging
01890  * messages are written.
01891  */
01892 #ifndef LWIP_DBG_MIN_LEVEL
01893 #define LWIP_DBG_MIN_LEVEL              LWIP_DBG_LEVEL_ALL
01894 #endif
01895 
01896 /**
01897  * LWIP_DBG_TYPES_ON: A mask that can be used to globally enable/disable
01898  * debug messages of certain types.
01899  */
01900 #ifndef LWIP_DBG_TYPES_ON
01901 #define LWIP_DBG_TYPES_ON               LWIP_DBG_ON
01902 #endif
01903 
01904 /**
01905  * ETHARP_DEBUG: Enable debugging in etharp.c.
01906  */
01907 #ifndef ETHARP_DEBUG
01908 #define ETHARP_DEBUG                    LWIP_DBG_OFF
01909 #endif
01910 
01911 /**
01912  * NETIF_DEBUG: Enable debugging in netif.c.
01913  */
01914 #ifndef NETIF_DEBUG
01915 #define NETIF_DEBUG                     LWIP_DBG_OFF
01916 #endif
01917 
01918 /**
01919  * PBUF_DEBUG: Enable debugging in pbuf.c.
01920  */
01921 #ifndef PBUF_DEBUG
01922 #define PBUF_DEBUG                      LWIP_DBG_OFF
01923 #endif
01924 
01925 /**
01926  * API_LIB_DEBUG: Enable debugging in api_lib.c.
01927  */
01928 #ifndef API_LIB_DEBUG
01929 #define API_LIB_DEBUG                   LWIP_DBG_OFF
01930 #endif
01931 
01932 /**
01933  * API_MSG_DEBUG: Enable debugging in api_msg.c.
01934  */
01935 #ifndef API_MSG_DEBUG
01936 #define API_MSG_DEBUG                   LWIP_DBG_OFF
01937 #endif
01938 
01939 /**
01940  * SOCKETS_DEBUG: Enable debugging in sockets.c.
01941  */
01942 #ifndef SOCKETS_DEBUG
01943 #define SOCKETS_DEBUG                   LWIP_DBG_OFF
01944 #endif
01945 
01946 /**
01947  * ICMP_DEBUG: Enable debugging in icmp.c.
01948  */
01949 #ifndef ICMP_DEBUG
01950 #define ICMP_DEBUG                      LWIP_DBG_OFF
01951 #endif
01952 
01953 /**
01954  * IGMP_DEBUG: Enable debugging in igmp.c.
01955  */
01956 #ifndef IGMP_DEBUG
01957 #define IGMP_DEBUG                      LWIP_DBG_OFF
01958 #endif
01959 
01960 /**
01961  * INET_DEBUG: Enable debugging in inet.c.
01962  */
01963 #ifndef INET_DEBUG
01964 #define INET_DEBUG                      LWIP_DBG_OFF
01965 #endif
01966 
01967 /**
01968  * IP_DEBUG: Enable debugging for IP.
01969  */
01970 #ifndef IP_DEBUG
01971 #define IP_DEBUG                        LWIP_DBG_OFF
01972 #endif
01973 
01974 /**
01975  * IP_REASS_DEBUG: Enable debugging in ip_frag.c for both frag & reass.
01976  */
01977 #ifndef IP_REASS_DEBUG
01978 #define IP_REASS_DEBUG                  LWIP_DBG_OFF
01979 #endif
01980 
01981 /**
01982  * RAW_DEBUG: Enable debugging in raw.c.
01983  */
01984 #ifndef RAW_DEBUG
01985 #define RAW_DEBUG                       LWIP_DBG_OFF
01986 #endif
01987 
01988 /**
01989  * MEM_DEBUG: Enable debugging in mem.c.
01990  */
01991 #ifndef MEM_DEBUG
01992 #define MEM_DEBUG                       LWIP_DBG_OFF
01993 #endif
01994 
01995 /**
01996  * MEMP_DEBUG: Enable debugging in memp.c.
01997  */
01998 #ifndef MEMP_DEBUG
01999 #define MEMP_DEBUG                      LWIP_DBG_OFF
02000 #endif
02001 
02002 /**
02003  * SYS_DEBUG: Enable debugging in sys.c.
02004  */
02005 #ifndef SYS_DEBUG
02006 #define SYS_DEBUG                       LWIP_DBG_OFF
02007 #endif
02008 
02009 /**
02010  * TIMERS_DEBUG: Enable debugging in timers.c.
02011  */
02012 #ifndef TIMERS_DEBUG
02013 #define TIMERS_DEBUG                    LWIP_DBG_OFF
02014 #endif
02015 
02016 /**
02017  * TCP_DEBUG: Enable debugging for TCP.
02018  */
02019 #ifndef TCP_DEBUG
02020 #define TCP_DEBUG                       LWIP_DBG_OFF
02021 #endif
02022 
02023 /**
02024  * TCP_INPUT_DEBUG: Enable debugging in tcp_in.c for incoming debug.
02025  */
02026 #ifndef TCP_INPUT_DEBUG
02027 #define TCP_INPUT_DEBUG                 LWIP_DBG_OFF
02028 #endif
02029 
02030 /**
02031  * TCP_FR_DEBUG: Enable debugging in tcp_in.c for fast retransmit.
02032  */
02033 #ifndef TCP_FR_DEBUG
02034 #define TCP_FR_DEBUG                    LWIP_DBG_OFF
02035 #endif
02036 
02037 /**
02038  * TCP_RTO_DEBUG: Enable debugging in TCP for retransmit
02039  * timeout.
02040  */
02041 #ifndef TCP_RTO_DEBUG
02042 #define TCP_RTO_DEBUG                   LWIP_DBG_OFF
02043 #endif
02044 
02045 /**
02046  * TCP_CWND_DEBUG: Enable debugging for TCP congestion window.
02047  */
02048 #ifndef TCP_CWND_DEBUG
02049 #define TCP_CWND_DEBUG                  LWIP_DBG_OFF
02050 #endif
02051 
02052 /**
02053  * TCP_WND_DEBUG: Enable debugging in tcp_in.c for window updating.
02054  */
02055 #ifndef TCP_WND_DEBUG
02056 #define TCP_WND_DEBUG                   LWIP_DBG_OFF
02057 #endif
02058 
02059 /**
02060  * TCP_OUTPUT_DEBUG: Enable debugging in tcp_out.c output functions.
02061  */
02062 #ifndef TCP_OUTPUT_DEBUG
02063 #define TCP_OUTPUT_DEBUG                LWIP_DBG_OFF
02064 #endif
02065 
02066 /**
02067  * TCP_RST_DEBUG: Enable debugging for TCP with the RST message.
02068  */
02069 #ifndef TCP_RST_DEBUG
02070 #define TCP_RST_DEBUG                   LWIP_DBG_OFF
02071 #endif
02072 
02073 /**
02074  * TCP_QLEN_DEBUG: Enable debugging for TCP queue lengths.
02075  */
02076 #ifndef TCP_QLEN_DEBUG
02077 #define TCP_QLEN_DEBUG                  LWIP_DBG_OFF
02078 #endif
02079 
02080 /**
02081  * UDP_DEBUG: Enable debugging in UDP.
02082  */
02083 #ifndef UDP_DEBUG
02084 #define UDP_DEBUG                       LWIP_DBG_OFF
02085 #endif
02086 
02087 /**
02088  * TCPIP_DEBUG: Enable debugging in tcpip.c.
02089  */
02090 #ifndef TCPIP_DEBUG
02091 #define TCPIP_DEBUG                     LWIP_DBG_OFF
02092 #endif
02093 
02094 /**
02095  * PPP_DEBUG: Enable debugging for PPP.
02096  */
02097 #ifndef PPP_DEBUG
02098 #define PPP_DEBUG                       LWIP_DBG_OFF
02099 #endif
02100 
02101 /**
02102  * SLIP_DEBUG: Enable debugging in slipif.c.
02103  */
02104 #ifndef SLIP_DEBUG
02105 #define SLIP_DEBUG                      LWIP_DBG_OFF
02106 #endif
02107 
02108 /**
02109  * DHCP_DEBUG: Enable debugging in dhcp.c.
02110  */
02111 #ifndef DHCP_DEBUG
02112 #define DHCP_DEBUG                      LWIP_DBG_OFF
02113 #endif
02114 
02115 /**
02116  * AUTOIP_DEBUG: Enable debugging in autoip.c.
02117  */
02118 #ifndef AUTOIP_DEBUG
02119 #define AUTOIP_DEBUG                    LWIP_DBG_OFF
02120 #endif
02121 
02122 /**
02123  * SNMP_MSG_DEBUG: Enable debugging for SNMP messages.
02124  */
02125 #ifndef SNMP_MSG_DEBUG
02126 #define SNMP_MSG_DEBUG                  LWIP_DBG_OFF
02127 #endif
02128 
02129 /**
02130  * SNMP_MIB_DEBUG: Enable debugging for SNMP MIBs.
02131  */
02132 #ifndef SNMP_MIB_DEBUG
02133 #define SNMP_MIB_DEBUG                  LWIP_DBG_OFF
02134 #endif
02135 
02136 /**
02137  * DNS_DEBUG: Enable debugging for DNS.
02138  */
02139 #ifndef DNS_DEBUG
02140 #define DNS_DEBUG                       LWIP_DBG_OFF
02141 #endif
02142 
02143 #endif /* __LWIP_OPT_H__ */