ReactOS Development > Doxygen
tcp_impl.h
Go to the documentation of this file.
00001 /* 00002 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without modification, 00006 * are permitted provided that the following conditions are met: 00007 * 00008 * 1. Redistributions of source code must retain the above copyright notice, 00009 * this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright notice, 00011 * this list of conditions and the following disclaimer in the documentation 00012 * and/or other materials provided with the distribution. 00013 * 3. The name of the author may not be used to endorse or promote products 00014 * derived from this software without specific prior written permission. 00015 * 00016 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 00017 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00018 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 00019 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00020 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 00021 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00022 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00023 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 00024 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 00025 * OF SUCH DAMAGE. 00026 * 00027 * This file is part of the lwIP TCP/IP stack. 00028 * 00029 * Author: Adam Dunkels <adam@sics.se> 00030 * 00031 */ 00032 #ifndef __LWIP_TCP_IMPL_H__ 00033 #define __LWIP_TCP_IMPL_H__ 00034 00035 #include "lwip/opt.h" 00036 00037 #if LWIP_TCP /* don't build if not configured for use in lwipopts.h */ 00038 00039 #include "lwip/tcp.h" 00040 #include "lwip/sys.h" 00041 #include "lwip/mem.h" 00042 #include "lwip/pbuf.h" 00043 #include "lwip/ip.h" 00044 #include "lwip/icmp.h" 00045 #include "lwip/err.h" 00046 00047 #ifdef __cplusplus 00048 extern "C" { 00049 #endif 00050 00051 /* Functions for interfacing with TCP: */ 00052 00053 /* Lower layer interface to TCP: */ 00054 #define tcp_init() /* Compatibility define, no init needed. */ 00055 void tcp_tmr (void); /* Must be called every 00056 TCP_TMR_INTERVAL 00057 ms. (Typically 250 ms). */ 00058 /* It is also possible to call these two functions at the right 00059 intervals (instead of calling tcp_tmr()). */ 00060 void tcp_slowtmr (void); 00061 void tcp_fasttmr (void); 00062 00063 00064 /* Only used by IP to pass a TCP segment to TCP: */ 00065 void tcp_input (struct pbuf *p, struct netif *inp); 00066 /* Used within the TCP code only: */ 00067 struct tcp_pcb * tcp_alloc (u8_t prio); 00068 void tcp_abandon (struct tcp_pcb *pcb, int reset); 00069 err_t tcp_send_empty_ack(struct tcp_pcb *pcb); 00070 void tcp_rexmit (struct tcp_pcb *pcb); 00071 void tcp_rexmit_rto (struct tcp_pcb *pcb); 00072 void tcp_rexmit_fast (struct tcp_pcb *pcb); 00073 u32_t tcp_update_rcv_ann_wnd(struct tcp_pcb *pcb); 00074 00084 #define tcp_do_output_nagle(tpcb) ((((tpcb)->unacked == NULL) || \ 00085 ((tpcb)->flags & (TF_NODELAY | TF_INFR)) || \ 00086 (((tpcb)->unsent != NULL) && (((tpcb)->unsent->next != NULL) || \ 00087 ((tpcb)->unsent->len >= (tpcb)->mss))) \ 00088 ) ? 1 : 0) 00089 #define tcp_output_nagle(tpcb) (tcp_do_output_nagle(tpcb) ? tcp_output(tpcb) : ERR_OK) 00090 00091 00092 #define TCP_SEQ_LT(a,b) ((s32_t)((a)-(b)) < 0) 00093 #define TCP_SEQ_LEQ(a,b) ((s32_t)((a)-(b)) <= 0) 00094 #define TCP_SEQ_GT(a,b) ((s32_t)((a)-(b)) > 0) 00095 #define TCP_SEQ_GEQ(a,b) ((s32_t)((a)-(b)) >= 0) 00096 /* is b<=a<=c? */ 00097 #if 0 /* see bug #10548 */ 00098 #define TCP_SEQ_BETWEEN(a,b,c) ((c)-(b) >= (a)-(b)) 00099 #endif 00100 #define TCP_SEQ_BETWEEN(a,b,c) (TCP_SEQ_GEQ(a,b) && TCP_SEQ_LEQ(a,c)) 00101 #define TCP_FIN 0x01U 00102 #define TCP_SYN 0x02U 00103 #define TCP_RST 0x04U 00104 #define TCP_PSH 0x08U 00105 #define TCP_ACK 0x10U 00106 #define TCP_URG 0x20U 00107 #define TCP_ECE 0x40U 00108 #define TCP_CWR 0x80U 00109 00110 #define TCP_FLAGS 0x3fU 00111 00112 /* Length of the TCP header, excluding options. */ 00113 #define TCP_HLEN 20 00114 00115 #ifndef TCP_TMR_INTERVAL 00116 #define TCP_TMR_INTERVAL 250 /* The TCP timer interval in milliseconds. */ 00117 #endif /* TCP_TMR_INTERVAL */ 00118 00119 #ifndef TCP_FAST_INTERVAL 00120 #define TCP_FAST_INTERVAL TCP_TMR_INTERVAL /* the fine grained timeout in milliseconds */ 00121 #endif /* TCP_FAST_INTERVAL */ 00122 00123 #ifndef TCP_SLOW_INTERVAL 00124 #define TCP_SLOW_INTERVAL (2*TCP_TMR_INTERVAL) /* the coarse grained timeout in milliseconds */ 00125 #endif /* TCP_SLOW_INTERVAL */ 00126 00127 #define TCP_FIN_WAIT_TIMEOUT 20000 /* milliseconds */ 00128 #define TCP_SYN_RCVD_TIMEOUT 20000 /* milliseconds */ 00129 00130 #define TCP_OOSEQ_TIMEOUT 6U /* x RTO */ 00131 00132 #ifndef TCP_MSL 00133 #define TCP_MSL 60000UL /* The maximum segment lifetime in milliseconds */ 00134 #endif 00135 00136 /* Keepalive values, compliant with RFC 1122. Don't change this unless you know what you're doing */ 00137 #ifndef TCP_KEEPIDLE_DEFAULT 00138 #define TCP_KEEPIDLE_DEFAULT 7200000UL /* Default KEEPALIVE timer in milliseconds */ 00139 #endif 00140 00141 #ifndef TCP_KEEPINTVL_DEFAULT 00142 #define TCP_KEEPINTVL_DEFAULT 75000UL /* Default Time between KEEPALIVE probes in milliseconds */ 00143 #endif 00144 00145 #ifndef TCP_KEEPCNT_DEFAULT 00146 #define TCP_KEEPCNT_DEFAULT 9U /* Default Counter for KEEPALIVE probes */ 00147 #endif 00148 00149 #define TCP_MAXIDLE TCP_KEEPCNT_DEFAULT * TCP_KEEPINTVL_DEFAULT /* Maximum KEEPALIVE probe time */ 00150 00151 /* Fields are (of course) in network byte order. 00152 * Some fields are converted to host byte order in tcp_input(). 00153 */ 00154 #ifdef PACK_STRUCT_USE_INCLUDES 00155 # include "arch/bpstruct.h" 00156 #endif 00157 PACK_STRUCT_BEGIN 00158 struct tcp_hdr { 00159 PACK_STRUCT_FIELD(u16_t src); 00160 PACK_STRUCT_FIELD(u16_t dest); 00161 PACK_STRUCT_FIELD(u32_t seqno); 00162 PACK_STRUCT_FIELD(u32_t ackno); 00163 PACK_STRUCT_FIELD(u16_t _hdrlen_rsvd_flags); 00164 PACK_STRUCT_FIELD(u16_t wnd); 00165 PACK_STRUCT_FIELD(u16_t chksum); 00166 PACK_STRUCT_FIELD(u16_t urgp); 00167 } PACK_STRUCT_STRUCT; 00168 PACK_STRUCT_END 00169 #ifdef PACK_STRUCT_USE_INCLUDES 00170 # include "arch/epstruct.h" 00171 #endif 00172 00173 #define TCPH_OFFSET(phdr) (ntohs((phdr)->_hdrlen_rsvd_flags) >> 8) 00174 #define TCPH_HDRLEN(phdr) (ntohs((phdr)->_hdrlen_rsvd_flags) >> 12) 00175 #define TCPH_FLAGS(phdr) (ntohs((phdr)->_hdrlen_rsvd_flags) & TCP_FLAGS) 00176 00177 #define TCPH_OFFSET_SET(phdr, offset) (phdr)->_hdrlen_rsvd_flags = htons(((offset) << 8) | TCPH_FLAGS(phdr)) 00178 #define TCPH_HDRLEN_SET(phdr, len) (phdr)->_hdrlen_rsvd_flags = htons(((len) << 12) | TCPH_FLAGS(phdr)) 00179 #define TCPH_FLAGS_SET(phdr, flags) (phdr)->_hdrlen_rsvd_flags = (((phdr)->_hdrlen_rsvd_flags & PP_HTONS((u16_t)(~(u16_t)(TCP_FLAGS)))) | htons(flags)) 00180 #define TCPH_HDRLEN_FLAGS_SET(phdr, len, flags) (phdr)->_hdrlen_rsvd_flags = htons(((len) << 12) | (flags)) 00181 00182 #define TCPH_SET_FLAG(phdr, flags ) (phdr)->_hdrlen_rsvd_flags = ((phdr)->_hdrlen_rsvd_flags | htons(flags)) 00183 #define TCPH_UNSET_FLAG(phdr, flags) (phdr)->_hdrlen_rsvd_flags = htons(ntohs((phdr)->_hdrlen_rsvd_flags) | (TCPH_FLAGS(phdr) & ~(flags)) ) 00184 00185 #define TCP_TCPLEN(seg) ((seg)->len + ((TCPH_FLAGS((seg)->tcphdr) & (TCP_FIN | TCP_SYN)) != 0)) 00186 00189 #define TF_RESET (u8_t)0x08U /* Connection was reset. */ 00190 #define TF_CLOSED (u8_t)0x10U /* Connection was sucessfully closed. */ 00191 #define TF_GOT_FIN (u8_t)0x20U /* Connection was closed by the remote end. */ 00192 00193 00194 #if LWIP_EVENT_API 00195 00196 #define TCP_EVENT_ACCEPT(pcb,err,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ 00197 LWIP_EVENT_ACCEPT, NULL, 0, err) 00198 #define TCP_EVENT_SENT(pcb,space,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ 00199 LWIP_EVENT_SENT, NULL, space, ERR_OK) 00200 #define TCP_EVENT_RECV(pcb,p,err,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ 00201 LWIP_EVENT_RECV, (p), 0, (err)) 00202 #define TCP_EVENT_CLOSED(pcb,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ 00203 LWIP_EVENT_RECV, NULL, 0, ERR_OK) 00204 #define TCP_EVENT_CONNECTED(pcb,err,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ 00205 LWIP_EVENT_CONNECTED, NULL, 0, (err)) 00206 #define TCP_EVENT_POLL(pcb,ret) ret = lwip_tcp_event((pcb)->callback_arg, (pcb),\ 00207 LWIP_EVENT_POLL, NULL, 0, ERR_OK) 00208 #define TCP_EVENT_ERR(errf,arg,err) lwip_tcp_event((arg), NULL, \ 00209 LWIP_EVENT_ERR, NULL, 0, (err)) 00210 00211 #else /* LWIP_EVENT_API */ 00212 00213 #define TCP_EVENT_ACCEPT(pcb,err,ret) \ 00214 do { \ 00215 if((pcb)->accept != NULL) \ 00216 (ret) = (pcb)->accept((pcb)->callback_arg,(pcb),(err)); \ 00217 else (ret) = ERR_ARG; \ 00218 } while (0) 00219 00220 #define TCP_EVENT_SENT(pcb,space,ret) \ 00221 do { \ 00222 if((pcb)->sent != NULL) \ 00223 (ret) = (pcb)->sent((pcb)->callback_arg,(pcb),(space)); \ 00224 else (ret) = ERR_OK; \ 00225 } while (0) 00226 00227 #define TCP_EVENT_RECV(pcb,p,err,ret) \ 00228 do { \ 00229 if((pcb)->recv != NULL) { \ 00230 (ret) = (pcb)->recv((pcb)->callback_arg,(pcb),(p),(err));\ 00231 } else { \ 00232 (ret) = tcp_recv_null(NULL, (pcb), (p), (err)); \ 00233 } \ 00234 } while (0) 00235 00236 #define TCP_EVENT_CLOSED(pcb,ret) \ 00237 do { \ 00238 if(((pcb)->recv != NULL)) { \ 00239 (ret) = (pcb)->recv((pcb)->callback_arg,(pcb),NULL,ERR_OK);\ 00240 } else { \ 00241 (ret) = ERR_OK; \ 00242 } \ 00243 } while (0) 00244 00245 #define TCP_EVENT_CONNECTED(pcb,err,ret) \ 00246 do { \ 00247 if((pcb)->connected != NULL) \ 00248 (ret) = (pcb)->connected((pcb)->callback_arg,(pcb),(err)); \ 00249 else (ret) = ERR_OK; \ 00250 } while (0) 00251 00252 #define TCP_EVENT_POLL(pcb,ret) \ 00253 do { \ 00254 if((pcb)->poll != NULL) \ 00255 (ret) = (pcb)->poll((pcb)->callback_arg,(pcb)); \ 00256 else (ret) = ERR_OK; \ 00257 } while (0) 00258 00259 #define TCP_EVENT_ERR(errf,arg,err) \ 00260 do { \ 00261 if((errf) != NULL) \ 00262 (errf)((arg),(err)); \ 00263 } while (0) 00264 00265 #endif /* LWIP_EVENT_API */ 00266 00268 #if TCP_OVERSIZE && defined(LWIP_DEBUG) 00269 #define TCP_OVERSIZE_DBGCHECK 1 00270 #else 00271 #define TCP_OVERSIZE_DBGCHECK 0 00272 #endif 00273 00275 #define TCP_CHECKSUM_ON_COPY (LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_TCP) 00276 00277 /* This structure represents a TCP segment on the unsent, unacked and ooseq queues */ 00278 struct tcp_seg { 00279 struct tcp_seg *next; /* used when putting segements on a queue */ 00280 struct pbuf *p; /* buffer containing data + TCP header */ 00281 u16_t len; /* the TCP length of this segment */ 00282 #if TCP_OVERSIZE_DBGCHECK 00283 u16_t oversize_left; /* Extra bytes available at the end of the last 00284 pbuf in unsent (used for asserting vs. 00285 tcp_pcb.unsent_oversized only) */ 00286 #endif /* TCP_OVERSIZE_DBGCHECK */ 00287 #if TCP_CHECKSUM_ON_COPY 00288 u16_t chksum; 00289 u8_t chksum_swapped; 00290 #endif /* TCP_CHECKSUM_ON_COPY */ 00291 u8_t flags; 00292 #define TF_SEG_OPTS_MSS (u8_t)0x01U /* Include MSS option. */ 00293 #define TF_SEG_OPTS_TS (u8_t)0x02U /* Include timestamp option. */ 00294 #define TF_SEG_DATA_CHECKSUMMED (u8_t)0x04U /* ALL data (not the header) is 00295 checksummed into 'chksum' */ 00296 struct tcp_hdr *tcphdr; /* the TCP header */ 00297 }; 00298 00299 #define LWIP_TCP_OPT_LENGTH(flags) \ 00300 (flags & TF_SEG_OPTS_MSS ? 4 : 0) + \ 00301 (flags & TF_SEG_OPTS_TS ? 12 : 0) 00302 00304 #define TCP_BUILD_MSS_OPTION(x) (x) = PP_HTONL(((u32_t)2 << 24) | \ 00305 ((u32_t)4 << 16) | \ 00306 (((u32_t)TCP_MSS / 256) << 8) | \ 00307 (TCP_MSS & 255)) 00308 00309 /* Global variables: */ 00310 extern struct tcp_pcb *tcp_input_pcb; 00311 extern u32_t tcp_ticks; 00312 00313 /* The TCP PCB lists. */ 00314 union tcp_listen_pcbs_t { /* List of all TCP PCBs in LISTEN state. */ 00315 struct tcp_pcb_listen *listen_pcbs; 00316 struct tcp_pcb *pcbs; 00317 }; 00318 extern struct tcp_pcb *tcp_bound_pcbs; 00319 extern union tcp_listen_pcbs_t tcp_listen_pcbs; 00320 extern struct tcp_pcb *tcp_active_pcbs; /* List of all TCP PCBs that are in a 00321 state in which they accept or send 00322 data. */ 00323 extern struct tcp_pcb *tcp_tw_pcbs; /* List of all TCP PCBs in TIME-WAIT. */ 00324 00325 extern struct tcp_pcb *tcp_tmp_pcb; /* Only used for temporary storage. */ 00326 00327 /* Axioms about the above lists: 00328 1) Every TCP PCB that is not CLOSED is in one of the lists. 00329 2) A PCB is only in one of the lists. 00330 3) All PCBs in the tcp_listen_pcbs list is in LISTEN state. 00331 4) All PCBs in the tcp_tw_pcbs list is in TIME-WAIT state. 00332 */ 00333 /* Define two macros, TCP_REG and TCP_RMV that registers a TCP PCB 00334 with a PCB list or removes a PCB from a list, respectively. */ 00335 #ifndef TCP_DEBUG_PCB_LISTS 00336 #define TCP_DEBUG_PCB_LISTS 0 00337 #endif 00338 #if TCP_DEBUG_PCB_LISTS 00339 #define TCP_REG(pcbs, npcb) do {\ 00340 LWIP_DEBUGF(TCP_DEBUG, ("TCP_REG %p local port %d\n", (npcb), (npcb)->local_port)); \ 00341 for(tcp_tmp_pcb = *(pcbs); \ 00342 tcp_tmp_pcb != NULL; \ 00343 tcp_tmp_pcb = tcp_tmp_pcb->next) { \ 00344 LWIP_ASSERT("TCP_REG: already registered\n", tcp_tmp_pcb != (npcb)); \ 00345 } \ 00346 LWIP_ASSERT("TCP_REG: pcb->state != CLOSED", ((pcbs) == &tcp_bound_pcbs) || ((npcb)->state != CLOSED)); \ 00347 (npcb)->next = *(pcbs); \ 00348 LWIP_ASSERT("TCP_REG: npcb->next != npcb", (npcb)->next != (npcb)); \ 00349 *(pcbs) = (npcb); \ 00350 LWIP_ASSERT("TCP_RMV: tcp_pcbs sane", tcp_pcbs_sane()); \ 00351 tcp_timer_needed(); \ 00352 } while(0) 00353 #define TCP_RMV(pcbs, npcb) do { \ 00354 LWIP_ASSERT("TCP_RMV: pcbs != NULL", *(pcbs) != NULL); \ 00355 LWIP_DEBUGF(TCP_DEBUG, ("TCP_RMV: removing %p from %p\n", (npcb), *(pcbs))); \ 00356 if(*(pcbs) == (npcb)) { \ 00357 *(pcbs) = (*pcbs)->next; \ 00358 } else for(tcp_tmp_pcb = *(pcbs); tcp_tmp_pcb != NULL; tcp_tmp_pcb = tcp_tmp_pcb->next) { \ 00359 if(tcp_tmp_pcb->next == (npcb)) { \ 00360 tcp_tmp_pcb->next = (npcb)->next; \ 00361 break; \ 00362 } \ 00363 } \ 00364 (npcb)->next = NULL; \ 00365 LWIP_ASSERT("TCP_RMV: tcp_pcbs sane", tcp_pcbs_sane()); \ 00366 LWIP_DEBUGF(TCP_DEBUG, ("TCP_RMV: removed %p from %p\n", (npcb), *(pcbs))); \ 00367 } while(0) 00368 00369 #else /* LWIP_DEBUG */ 00370 00371 #define TCP_REG(pcbs, npcb) \ 00372 do { \ 00373 (npcb)->next = *pcbs; \ 00374 *(pcbs) = (npcb); \ 00375 tcp_timer_needed(); \ 00376 } while (0) 00377 00378 #define TCP_RMV(pcbs, npcb) \ 00379 do { \ 00380 if(*(pcbs) == (npcb)) { \ 00381 (*(pcbs)) = (*pcbs)->next; \ 00382 } \ 00383 else { \ 00384 for(tcp_tmp_pcb = *pcbs; \ 00385 tcp_tmp_pcb != NULL; \ 00386 tcp_tmp_pcb = tcp_tmp_pcb->next) { \ 00387 if(tcp_tmp_pcb->next == (npcb)) { \ 00388 tcp_tmp_pcb->next = (npcb)->next; \ 00389 break; \ 00390 } \ 00391 } \ 00392 } \ 00393 (npcb)->next = NULL; \ 00394 } while(0) 00395 00396 #endif /* LWIP_DEBUG */ 00397 00398 00399 /* Internal functions: */ 00400 struct tcp_pcb *tcp_pcb_copy(struct tcp_pcb *pcb); 00401 void tcp_pcb_purge(struct tcp_pcb *pcb); 00402 void tcp_pcb_remove(struct tcp_pcb **pcblist, struct tcp_pcb *pcb); 00403 00404 void tcp_segs_free(struct tcp_seg *seg); 00405 void tcp_seg_free(struct tcp_seg *seg); 00406 struct tcp_seg *tcp_seg_copy(struct tcp_seg *seg); 00407 00408 #define tcp_ack(pcb) \ 00409 do { \ 00410 if((pcb)->flags & TF_ACK_DELAY) { \ 00411 (pcb)->flags &= ~TF_ACK_DELAY; \ 00412 (pcb)->flags |= TF_ACK_NOW; \ 00413 } \ 00414 else { \ 00415 (pcb)->flags |= TF_ACK_DELAY; \ 00416 } \ 00417 } while (0) 00418 00419 #define tcp_ack_now(pcb) \ 00420 do { \ 00421 (pcb)->flags |= TF_ACK_NOW; \ 00422 } while (0) 00423 00424 err_t tcp_send_fin(struct tcp_pcb *pcb); 00425 err_t tcp_enqueue_flags(struct tcp_pcb *pcb, u8_t flags); 00426 00427 void tcp_rexmit_seg(struct tcp_pcb *pcb, struct tcp_seg *seg); 00428 00429 void tcp_rst(u32_t seqno, u32_t ackno, 00430 ip_addr_t *local_ip, ip_addr_t *remote_ip, 00431 u16_t local_port, u16_t remote_port); 00432 00433 u32_t tcp_next_iss(void); 00434 00435 void tcp_keepalive(struct tcp_pcb *pcb); 00436 void tcp_zero_window_probe(struct tcp_pcb *pcb); 00437 00438 #if TCP_CALCULATE_EFF_SEND_MSS 00439 u16_t tcp_eff_send_mss(u16_t sendmss, ip_addr_t *addr); 00440 #endif /* TCP_CALCULATE_EFF_SEND_MSS */ 00441 00442 #if LWIP_CALLBACK_API 00443 err_t tcp_recv_null(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err); 00444 #endif /* LWIP_CALLBACK_API */ 00445 00446 #if TCP_DEBUG || TCP_INPUT_DEBUG || TCP_OUTPUT_DEBUG 00447 void tcp_debug_print(struct tcp_hdr *tcphdr); 00448 void tcp_debug_print_flags(u8_t flags); 00449 void tcp_debug_print_state(enum tcp_state s); 00450 void tcp_debug_print_pcbs(void); 00451 s16_t tcp_pcbs_sane(void); 00452 #else 00453 # define tcp_debug_print(tcphdr) 00454 # define tcp_debug_print_flags(flags) 00455 # define tcp_debug_print_state(s) 00456 # define tcp_debug_print_pcbs() 00457 # define tcp_pcbs_sane() 1 00458 #endif /* TCP_DEBUG */ 00459 00462 void tcp_timer_needed(void); 00463 00464 00465 #ifdef __cplusplus 00466 } 00467 #endif 00468 00469 #endif /* LWIP_TCP */ 00470 00471 #endif /* __LWIP_TCP_H__ */
Generated on Sun May 27 2012 04:36:04 for ReactOS by
1.7.6.1
