1/** 2 * @file 3 * 4 * IPv6 layer. 5 */ 6 7/* 8 * Copyright (c) 2010 Inico Technologies Ltd. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without modification, 12 * are permitted provided that the following conditions are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright notice, 15 * this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright notice, 17 * this list of conditions and the following disclaimer in the documentation 18 * and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 31 * OF SUCH DAMAGE. 32 * 33 * This file is part of the lwIP TCP/IP stack. 34 * 35 * Author: Ivan Delamer <delamer@inicotech.com> 36 * 37 * 38 * Please coordinate changes and requests with Ivan Delamer 39 * <delamer@inicotech.com> 40 */ 41 42#include "lwip/opt.h" 43 44#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ 45 46#include "lwip/def.h" 47#include "lwip/mem.h" 48#include "lwip/netif.h" 49#include "lwip/ip.h" 50#include "lwip/ip6.h" 51#include "lwip/ip6_addr.h" 52#include "lwip/ip6_frag.h" 53#include "lwip/icmp6.h" 54#include "lwip/raw.h" 55#include "lwip/udp.h" 56#include "lwip/priv/tcp_priv.h" 57#include "lwip/dhcp6.h" 58#include "lwip/nd6.h" 59#include "lwip/mld6.h" 60#include "lwip/debug.h" 61#include "lwip/stats.h" 62 63#ifdef LWIP_HOOK_FILENAME 64#include LWIP_HOOK_FILENAME 65#endif 66 67/** 68 * Finds the appropriate network interface for a given IPv6 address. It tries to select 69 * a netif following a sequence of heuristics: 70 * 1) if there is only 1 netif, return it 71 * 2) if the destination is a link-local address, try to match the src address to a netif. 72 * this is a tricky case because with multiple netifs, link-local addresses only have 73 * meaning within a particular subnet/link. 74 * 3) tries to match the destination subnet to a configured address 75 * 4) tries to find a router 76 * 5) tries to match the source address to the netif 77 * 6) returns the default netif, if configured 78 * 79 * @param src the source IPv6 address, if known 80 * @param dest the destination IPv6 address for which to find the route 81 * @return the netif on which to send to reach dest 82 */ 83struct netif * 84ip6_route(const ip6_addr_t *src, const ip6_addr_t *dest) 85{ 86 struct netif *netif; 87 s8_t i; 88 89 /* If single netif configuration, fast return. */ 90 if ((netif_list != NULL) && (netif_list->next == NULL)) { 91 if (!netif_is_up(netif_list) || !netif_is_link_up(netif_list)) { 92 return NULL; 93 } 94 return netif_list; 95 } 96 97 /* Special processing for link-local addresses. */ 98 if (ip6_addr_islinklocal(dest)) { 99 if (ip6_addr_isany(src)) { 100 /* Use default netif, if Up. */ 101 if (netif_default == NULL || !netif_is_up(netif_default) || 102 !netif_is_link_up(netif_default)) { 103 return NULL; 104 } 105 return netif_default; 106 } 107 108 /* Try to find the netif for the source address, checking that link is up. */ 109 for (netif = netif_list; netif != NULL; netif = netif->next) { 110 if (!netif_is_up(netif) || !netif_is_link_up(netif)) { 111 continue; 112 } 113 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 114 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 115 ip6_addr_cmp(src, netif_ip6_addr(netif, i))) { 116 return netif; 117 } 118 } 119 } 120 121 /* netif not found, use default netif, if up */ 122 if (netif_default == NULL || !netif_is_up(netif_default) || 123 !netif_is_link_up(netif_default)) { 124 return NULL; 125 } 126 return netif_default; 127 } 128 129 /* we come here for non-link-local addresses */ 130#ifdef LWIP_HOOK_IP6_ROUTE 131 netif = LWIP_HOOK_IP6_ROUTE(src, dest); 132 if (netif != NULL) { 133 return netif; 134 } 135#endif 136 137 /* See if the destination subnet matches a configured address. */ 138 for (netif = netif_list; netif != NULL; netif = netif->next) { 139 if (!netif_is_up(netif) || !netif_is_link_up(netif)) { 140 continue; 141 } 142 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 143 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 144 ip6_addr_netcmp(dest, netif_ip6_addr(netif, i))) { 145 return netif; 146 } 147 } 148 } 149 150 /* Get the netif for a suitable router. */ 151 netif = nd6_find_route(dest); 152 if ((netif != NULL) && netif_is_up(netif) && netif_is_link_up(netif)) { 153 return netif; 154 } 155 156 /* try with the netif that matches the source address. */ 157 if (!ip6_addr_isany(src)) { 158 for (netif = netif_list; netif != NULL; netif = netif->next) { 159 if (!netif_is_up(netif) || !netif_is_link_up(netif)) { 160 continue; 161 } 162 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 163 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 164 ip6_addr_cmp(src, netif_ip6_addr(netif, i))) { 165 return netif; 166 } 167 } 168 } 169 } 170 171#if LWIP_NETIF_LOOPBACK && !LWIP_HAVE_LOOPIF 172 /* loopif is disabled, loopback traffic is passed through any netif */ 173 if (ip6_addr_isloopback(dest)) { 174 /* don't check for link on loopback traffic */ 175 if (netif_default != NULL && netif_is_up(netif_default)) { 176 return netif_default; 177 } 178 /* default netif is not up, just use any netif for loopback traffic */ 179 for (netif = netif_list; netif != NULL; netif = netif->next) { 180 if (netif_is_up(netif)) { 181 return netif; 182 } 183 } 184 return NULL; 185 } 186#endif /* LWIP_NETIF_LOOPBACK && !LWIP_HAVE_LOOPIF */ 187 188 /* no matching netif found, use default netif, if up */ 189 if ((netif_default == NULL) || !netif_is_up(netif_default) || !netif_is_link_up(netif_default)) { 190 return NULL; 191 } 192 return netif_default; 193} 194 195/** 196 * @ingroup ip6 197 * Select the best IPv6 source address for a given destination 198 * IPv6 address. Loosely follows RFC 3484. "Strong host" behavior 199 * is assumed. 200 * 201 * @param netif the netif on which to send a packet 202 * @param dest the destination we are trying to reach 203 * @return the most suitable source address to use, or NULL if no suitable 204 * source address is found 205 */ 206const ip_addr_t * 207ip6_select_source_address(struct netif *netif, const ip6_addr_t *dest) 208{ 209 const ip_addr_t *src = NULL; 210 u8_t i; 211 212 /* If dest is link-local, choose a link-local source. */ 213 if (ip6_addr_islinklocal(dest) || ip6_addr_ismulticast_linklocal(dest) || ip6_addr_ismulticast_iflocal(dest)) { 214 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 215 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 216 ip6_addr_islinklocal(netif_ip6_addr(netif, i))) { 217 return netif_ip_addr6(netif, i); 218 } 219 } 220 } 221 222 /* Choose a site-local with matching prefix. */ 223 if (ip6_addr_issitelocal(dest) || ip6_addr_ismulticast_sitelocal(dest)) { 224 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 225 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 226 ip6_addr_issitelocal(netif_ip6_addr(netif, i)) && 227 ip6_addr_netcmp(dest, netif_ip6_addr(netif, i))) { 228 return netif_ip_addr6(netif, i); 229 } 230 } 231 } 232 233 /* Choose a unique-local with matching prefix. */ 234 if (ip6_addr_isuniquelocal(dest) || ip6_addr_ismulticast_orglocal(dest)) { 235 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 236 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 237 ip6_addr_isuniquelocal(netif_ip6_addr(netif, i)) && 238 ip6_addr_netcmp(dest, netif_ip6_addr(netif, i))) { 239 return netif_ip_addr6(netif, i); 240 } 241 } 242 } 243 244 /* Choose a global with best matching prefix. */ 245 if (ip6_addr_isglobal(dest) || ip6_addr_ismulticast_global(dest)) { 246 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 247 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 248 ip6_addr_isglobal(netif_ip6_addr(netif, i))) { 249 if (src == NULL) { 250 src = netif_ip_addr6(netif, i); 251 } 252 else { 253 /* Replace src only if we find a prefix match. */ 254 /* @todo find longest matching prefix. */ 255 if ((!(ip6_addr_netcmp(ip_2_ip6(src), dest))) && 256 ip6_addr_netcmp(netif_ip6_addr(netif, i), dest)) { 257 src = netif_ip_addr6(netif, i); 258 } 259 } 260 } 261 } 262 if (src != NULL) { 263 return src; 264 } 265 } 266 267 /* Last resort: see if arbitrary prefix matches. */ 268 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 269 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 270 ip6_addr_netcmp(dest, netif_ip6_addr(netif, i))) { 271 return netif_ip_addr6(netif, i); 272 } 273 } 274 275 return NULL; 276} 277 278#if LWIP_IPV6_FORWARD 279/** 280 * Forwards an IPv6 packet. It finds an appropriate route for the 281 * packet, decrements the HL value of the packet, and outputs 282 * the packet on the appropriate interface. 283 * 284 * @param p the packet to forward (p->payload points to IP header) 285 * @param iphdr the IPv6 header of the input packet 286 * @param inp the netif on which this packet was received 287 */ 288static void 289ip6_forward(struct pbuf *p, struct ip6_hdr *iphdr, struct netif *inp) 290{ 291 struct netif *netif; 292 293 /* do not forward link-local or loopback addresses */ 294 if (ip6_addr_islinklocal(ip6_current_dest_addr()) || 295 ip6_addr_isloopback(ip6_current_dest_addr())) { 296 LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: not forwarding link-local address.\n")); 297 IP6_STATS_INC(ip6.rterr); 298 IP6_STATS_INC(ip6.drop); 299 return; 300 } 301 302 /* Find network interface where to forward this IP packet to. */ 303 netif = ip6_route(IP6_ADDR_ANY6, ip6_current_dest_addr()); 304 if (netif == NULL) { 305 LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n", 306 IP6_ADDR_BLOCK1(ip6_current_dest_addr()), 307 IP6_ADDR_BLOCK2(ip6_current_dest_addr()), 308 IP6_ADDR_BLOCK3(ip6_current_dest_addr()), 309 IP6_ADDR_BLOCK4(ip6_current_dest_addr()), 310 IP6_ADDR_BLOCK5(ip6_current_dest_addr()), 311 IP6_ADDR_BLOCK6(ip6_current_dest_addr()), 312 IP6_ADDR_BLOCK7(ip6_current_dest_addr()), 313 IP6_ADDR_BLOCK8(ip6_current_dest_addr()))); 314#if LWIP_ICMP6 315 /* Don't send ICMP messages in response to ICMP messages */ 316 if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) { 317 icmp6_dest_unreach(p, ICMP6_DUR_NO_ROUTE); 318 } 319#endif /* LWIP_ICMP6 */ 320 IP6_STATS_INC(ip6.rterr); 321 IP6_STATS_INC(ip6.drop); 322 return; 323 } 324 /* Do not forward packets onto the same network interface on which 325 * they arrived. */ 326 if (netif == inp) { 327 LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: not bouncing packets back on incoming interface.\n")); 328 IP6_STATS_INC(ip6.rterr); 329 IP6_STATS_INC(ip6.drop); 330 return; 331 } 332 333 /* decrement HL */ 334 IP6H_HOPLIM_SET(iphdr, IP6H_HOPLIM(iphdr) - 1); 335 /* send ICMP6 if HL == 0 */ 336 if (IP6H_HOPLIM(iphdr) == 0) { 337#if LWIP_ICMP6 338 /* Don't send ICMP messages in response to ICMP messages */ 339 if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) { 340 icmp6_time_exceeded(p, ICMP6_TE_HL); 341 } 342#endif /* LWIP_ICMP6 */ 343 IP6_STATS_INC(ip6.drop); 344 return; 345 } 346 347 if (netif->mtu && (p->tot_len > netif->mtu)) { 348#if LWIP_ICMP6 349 /* Don't send ICMP messages in response to ICMP messages */ 350 if (IP6H_NEXTH(iphdr) != IP6_NEXTH_ICMP6) { 351 icmp6_packet_too_big(p, netif->mtu); 352 } 353#endif /* LWIP_ICMP6 */ 354 IP6_STATS_INC(ip6.drop); 355 return; 356 } 357 358 LWIP_DEBUGF(IP6_DEBUG, ("ip6_forward: forwarding packet to %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n", 359 IP6_ADDR_BLOCK1(ip6_current_dest_addr()), 360 IP6_ADDR_BLOCK2(ip6_current_dest_addr()), 361 IP6_ADDR_BLOCK3(ip6_current_dest_addr()), 362 IP6_ADDR_BLOCK4(ip6_current_dest_addr()), 363 IP6_ADDR_BLOCK5(ip6_current_dest_addr()), 364 IP6_ADDR_BLOCK6(ip6_current_dest_addr()), 365 IP6_ADDR_BLOCK7(ip6_current_dest_addr()), 366 IP6_ADDR_BLOCK8(ip6_current_dest_addr()))); 367 368 /* transmit pbuf on chosen interface */ 369 netif->output_ip6(netif, p, ip6_current_dest_addr()); 370 IP6_STATS_INC(ip6.fw); 371 IP6_STATS_INC(ip6.xmit); 372 return; 373} 374#endif /* LWIP_IPV6_FORWARD */ 375 376/** 377 * This function is called by the network interface device driver when 378 * an IPv6 packet is received. The function does the basic checks of the 379 * IP header such as packet size being at least larger than the header 380 * size etc. If the packet was not destined for us, the packet is 381 * forwarded (using ip6_forward). 382 * 383 * Finally, the packet is sent to the upper layer protocol input function. 384 * 385 * @param p the received IPv6 packet (p->payload points to IPv6 header) 386 * @param inp the netif on which this packet was received 387 * @return ERR_OK if the packet was processed (could return ERR_* if it wasn't 388 * processed, but currently always returns ERR_OK) 389 */ 390err_t 391ip6_input(struct pbuf *p, struct netif *inp) 392{ 393 struct ip6_hdr *ip6hdr; 394 struct netif *netif; 395 u8_t nexth; 396 u16_t hlen; /* the current header length */ 397 u8_t i; 398#if 0 /*IP_ACCEPT_LINK_LAYER_ADDRESSING*/ 399 @todo 400 int check_ip_src=1; 401#endif /* IP_ACCEPT_LINK_LAYER_ADDRESSING */ 402 403 IP6_STATS_INC(ip6.recv); 404 405 /* identify the IP header */ 406 ip6hdr = (struct ip6_hdr *)p->payload; 407 if (IP6H_V(ip6hdr) != 6) { 408 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_WARNING, ("IPv6 packet dropped due to bad version number %"U32_F"\n", 409 IP6H_V(ip6hdr))); 410 pbuf_free(p); 411 IP6_STATS_INC(ip6.err); 412 IP6_STATS_INC(ip6.drop); 413 return ERR_OK; 414 } 415 416#ifdef LWIP_HOOK_IP6_INPUT 417 if (LWIP_HOOK_IP6_INPUT(p, inp)) { 418 /* the packet has been eaten */ 419 return ERR_OK; 420 } 421#endif 422 423 /* header length exceeds first pbuf length, or ip length exceeds total pbuf length? */ 424 if ((IP6_HLEN > p->len) || ((IP6H_PLEN(ip6hdr) + IP6_HLEN) > p->tot_len)) { 425 if (IP6_HLEN > p->len) { 426 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, 427 ("IPv6 header (len %"U16_F") does not fit in first pbuf (len %"U16_F"), IP packet dropped.\n", 428 (u16_t)IP6_HLEN, p->len)); 429 } 430 if ((IP6H_PLEN(ip6hdr) + IP6_HLEN) > p->tot_len) { 431 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, 432 ("IPv6 (plen %"U16_F") is longer than pbuf (len %"U16_F"), IP packet dropped.\n", 433 (u16_t)(IP6H_PLEN(ip6hdr) + IP6_HLEN), p->tot_len)); 434 } 435 /* free (drop) packet pbufs */ 436 pbuf_free(p); 437 IP6_STATS_INC(ip6.lenerr); 438 IP6_STATS_INC(ip6.drop); 439 return ERR_OK; 440 } 441 442 /* Trim pbuf. This should have been done at the netif layer, 443 * but we'll do it anyway just to be sure that its done. */ 444 pbuf_realloc(p, IP6_HLEN + IP6H_PLEN(ip6hdr)); 445 446 /* copy IP addresses to aligned ip6_addr_t */ 447 ip_addr_copy_from_ip6(ip_data.current_iphdr_dest, ip6hdr->dest); 448 ip_addr_copy_from_ip6(ip_data.current_iphdr_src, ip6hdr->src); 449 450 /* Don't accept virtual IPv4 mapped IPv6 addresses. 451 * Don't accept multicast source addresses. */ 452 if (ip6_addr_isipv4mappedipv6(ip_2_ip6(&ip_data.current_iphdr_dest)) || 453 ip6_addr_isipv4mappedipv6(ip_2_ip6(&ip_data.current_iphdr_src)) || 454 ip6_addr_ismulticast(ip_2_ip6(&ip_data.current_iphdr_src))) { 455 IP6_STATS_INC(ip6.err); 456 IP6_STATS_INC(ip6.drop); 457 return ERR_OK; 458 } 459 460 /* current header pointer. */ 461 ip_data.current_ip6_header = ip6hdr; 462 463 /* In netif, used in case we need to send ICMPv6 packets back. */ 464 ip_data.current_netif = inp; 465 ip_data.current_input_netif = inp; 466 467 /* match packet against an interface, i.e. is this packet for us? */ 468 if (ip6_addr_ismulticast(ip6_current_dest_addr())) { 469 /* Always joined to multicast if-local and link-local all-nodes group. */ 470 if (ip6_addr_isallnodes_iflocal(ip6_current_dest_addr()) || 471 ip6_addr_isallnodes_linklocal(ip6_current_dest_addr())) { 472 netif = inp; 473 } 474#if LWIP_IPV6_MLD 475 else if (mld6_lookfor_group(inp, ip6_current_dest_addr())) { 476 netif = inp; 477 } 478#else /* LWIP_IPV6_MLD */ 479 else if (ip6_addr_issolicitednode(ip6_current_dest_addr())) { 480 /* Filter solicited node packets when MLD is not enabled 481 * (for Neighbor discovery). */ 482 netif = NULL; 483 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 484 if (ip6_addr_isvalid(netif_ip6_addr_state(inp, i)) && 485 ip6_addr_cmp_solicitednode(ip6_current_dest_addr(), netif_ip6_addr(inp, i))) { 486 netif = inp; 487 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: solicited node packet accepted on interface %c%c\n", 488 netif->name[0], netif->name[1])); 489 break; 490 } 491 } 492 } 493#endif /* LWIP_IPV6_MLD */ 494 else { 495 netif = NULL; 496 } 497 } else { 498 /* start trying with inp. if that's not acceptable, start walking the 499 list of configured netifs. 500 'first' is used as a boolean to mark whether we started walking the list */ 501 int first = 1; 502 netif = inp; 503 do { 504 /* interface is up? */ 505 if (netif_is_up(netif)) { 506 /* unicast to this interface address? address configured? */ 507 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 508 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 509 ip6_addr_cmp(ip6_current_dest_addr(), netif_ip6_addr(netif, i))) { 510 /* exit outer loop */ 511 goto netif_found; 512 } 513 } 514 } 515 if (first) { 516 if (ip6_addr_islinklocal(ip6_current_dest_addr()) 517#if !LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF 518 || ip6_addr_isloopback(ip6_current_dest_addr()) 519#endif /* !LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF */ 520 ) { 521 /* Do not match link-local addresses to other netifs. The loopback 522 * address is to be considered link-local and packets to it should be 523 * dropped on other interfaces, as per RFC 4291 Sec. 2.5.3. This 524 * requirement cannot be implemented in the case that loopback 525 * traffic is sent across a non-loopback interface, however. 526 */ 527 netif = NULL; 528 break; 529 } 530 first = 0; 531 netif = netif_list; 532 } else { 533 netif = netif->next; 534 } 535 if (netif == inp) { 536 netif = netif->next; 537 } 538 } while (netif != NULL); 539netif_found: 540 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet accepted on interface %c%c\n", 541 netif ? netif->name[0] : 'X', netif? netif->name[1] : 'X')); 542 } 543 544 /* "::" packet source address? (used in duplicate address detection) */ 545 if (ip6_addr_isany(ip6_current_src_addr()) && 546 (!ip6_addr_issolicitednode(ip6_current_dest_addr()))) { 547 /* packet source is not valid */ 548 /* free (drop) packet pbufs */ 549 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with src ANY_ADDRESS dropped\n")); 550 pbuf_free(p); 551 IP6_STATS_INC(ip6.drop); 552 goto ip6_input_cleanup; 553 } 554 555 /* packet not for us? */ 556 if (netif == NULL) { 557 /* packet not for us, route or discard */ 558 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_TRACE, ("ip6_input: packet not for us.\n")); 559#if LWIP_IPV6_FORWARD 560 /* non-multicast packet? */ 561 if (!ip6_addr_ismulticast(ip6_current_dest_addr())) { 562 /* try to forward IP packet on (other) interfaces */ 563 ip6_forward(p, ip6hdr, inp); 564 } 565#endif /* LWIP_IPV6_FORWARD */ 566 pbuf_free(p); 567 goto ip6_input_cleanup; 568 } 569 570 /* current netif pointer. */ 571 ip_data.current_netif = netif; 572 573 /* Save next header type. */ 574 nexth = IP6H_NEXTH(ip6hdr); 575 576 /* Init header length. */ 577 hlen = ip_data.current_ip_header_tot_len = IP6_HLEN; 578 579 /* Move to payload. */ 580 pbuf_header(p, -IP6_HLEN); 581 582 /* Process known option extension headers, if present. */ 583 while (nexth != IP6_NEXTH_NONE) 584 { 585 switch (nexth) { 586 case IP6_NEXTH_HOPBYHOP: 587 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Hop-by-Hop options header\n")); 588 /* Get next header type. */ 589 nexth = *((u8_t *)p->payload); 590 591 /* Get the header length. */ 592 hlen = 8 * (1 + *((u8_t *)p->payload + 1)); 593 ip_data.current_ip_header_tot_len += hlen; 594 595 /* Skip over this header. */ 596 if (hlen > p->len) { 597 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, 598 ("IPv6 options header (hlen %"U16_F") does not fit in first pbuf (len %"U16_F"), IPv6 packet dropped.\n", 599 hlen, p->len)); 600 /* free (drop) packet pbufs */ 601 pbuf_free(p); 602 IP6_STATS_INC(ip6.lenerr); 603 IP6_STATS_INC(ip6.drop); 604 goto ip6_input_cleanup; 605 } 606 607 pbuf_header(p, -(s16_t)hlen); 608 break; 609 case IP6_NEXTH_DESTOPTS: 610 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Destination options header\n")); 611 /* Get next header type. */ 612 nexth = *((u8_t *)p->payload); 613 614 /* Get the header length. */ 615 hlen = 8 * (1 + *((u8_t *)p->payload + 1)); 616 ip_data.current_ip_header_tot_len += hlen; 617 618 /* Skip over this header. */ 619 if (hlen > p->len) { 620 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, 621 ("IPv6 options header (hlen %"U16_F") does not fit in first pbuf (len %"U16_F"), IPv6 packet dropped.\n", 622 hlen, p->len)); 623 /* free (drop) packet pbufs */ 624 pbuf_free(p); 625 IP6_STATS_INC(ip6.lenerr); 626 IP6_STATS_INC(ip6.drop); 627 goto ip6_input_cleanup; 628 } 629 630 pbuf_header(p, -(s16_t)hlen); 631 break; 632 case IP6_NEXTH_ROUTING: 633 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Routing header\n")); 634 /* Get next header type. */ 635 nexth = *((u8_t *)p->payload); 636 637 /* Get the header length. */ 638 hlen = 8 * (1 + *((u8_t *)p->payload + 1)); 639 ip_data.current_ip_header_tot_len += hlen; 640 641 /* Skip over this header. */ 642 if (hlen > p->len) { 643 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, 644 ("IPv6 options header (hlen %"U16_F") does not fit in first pbuf (len %"U16_F"), IPv6 packet dropped.\n", 645 hlen, p->len)); 646 /* free (drop) packet pbufs */ 647 pbuf_free(p); 648 IP6_STATS_INC(ip6.lenerr); 649 IP6_STATS_INC(ip6.drop); 650 goto ip6_input_cleanup; 651 } 652 653 pbuf_header(p, -(s16_t)hlen); 654 break; 655 656 case IP6_NEXTH_FRAGMENT: 657 { 658 struct ip6_frag_hdr *frag_hdr; 659 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Fragment header\n")); 660 661 frag_hdr = (struct ip6_frag_hdr *)p->payload; 662 663 /* Get next header type. */ 664 nexth = frag_hdr->_nexth; 665 666 /* Fragment Header length. */ 667 hlen = 8; 668 ip_data.current_ip_header_tot_len += hlen; 669 670 /* Make sure this header fits in current pbuf. */ 671 if (hlen > p->len) { 672 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, 673 ("IPv6 options header (hlen %"U16_F") does not fit in first pbuf (len %"U16_F"), IPv6 packet dropped.\n", 674 hlen, p->len)); 675 /* free (drop) packet pbufs */ 676 pbuf_free(p); 677 IP6_FRAG_STATS_INC(ip6_frag.lenerr); 678 IP6_FRAG_STATS_INC(ip6_frag.drop); 679 goto ip6_input_cleanup; 680 } 681 682 /* Offset == 0 and more_fragments == 0? */ 683 if ((frag_hdr->_fragment_offset & 684 PP_HTONS(IP6_FRAG_OFFSET_MASK | IP6_FRAG_MORE_FLAG)) == 0) { 685 /* This is a 1-fragment packet, usually a packet that we have 686 * already reassembled. Skip this header anc continue. */ 687 pbuf_header(p, -(s16_t)hlen); 688 } else { 689#if LWIP_IPV6_REASS 690 691 /* reassemble the packet */ 692 p = ip6_reass(p); 693 /* packet not fully reassembled yet? */ 694 if (p == NULL) { 695 goto ip6_input_cleanup; 696 } 697 698 /* Returned p point to IPv6 header. 699 * Update all our variables and pointers and continue. */ 700 ip6hdr = (struct ip6_hdr *)p->payload; 701 nexth = IP6H_NEXTH(ip6hdr); 702 hlen = ip_data.current_ip_header_tot_len = IP6_HLEN; 703 pbuf_header(p, -IP6_HLEN); 704 705#else /* LWIP_IPV6_REASS */ 706 /* free (drop) packet pbufs */ 707 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: packet with Fragment header dropped (with LWIP_IPV6_REASS==0)\n")); 708 pbuf_free(p); 709 IP6_STATS_INC(ip6.opterr); 710 IP6_STATS_INC(ip6.drop); 711 goto ip6_input_cleanup; 712#endif /* LWIP_IPV6_REASS */ 713 } 714 break; 715 } 716 default: 717 goto options_done; 718 break; 719 } 720 } 721options_done: 722 723 /* p points to IPv6 header again. */ 724 pbuf_header_force(p, (s16_t)ip_data.current_ip_header_tot_len); 725 726 /* send to upper layers */ 727 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: \n")); 728 ip6_debug_print(p); 729 LWIP_DEBUGF(IP6_DEBUG, ("ip6_input: p->len %"U16_F" p->tot_len %"U16_F"\n", p->len, p->tot_len)); 730 731#if LWIP_RAW 732 /* raw input did not eat the packet? */ 733 if (raw_input(p, inp) == 0) 734#endif /* LWIP_RAW */ 735 { 736 switch (nexth) { 737 case IP6_NEXTH_NONE: 738 pbuf_free(p); 739 break; 740#if LWIP_UDP 741 case IP6_NEXTH_UDP: 742#if LWIP_UDPLITE 743 case IP6_NEXTH_UDPLITE: 744#endif /* LWIP_UDPLITE */ 745 /* Point to payload. */ 746 pbuf_header(p, -(s16_t)ip_data.current_ip_header_tot_len); 747 udp_input(p, inp); 748 break; 749#endif /* LWIP_UDP */ 750#if LWIP_TCP 751 case IP6_NEXTH_TCP: 752 /* Point to payload. */ 753 pbuf_header(p, -(s16_t)ip_data.current_ip_header_tot_len); 754 tcp_input(p, inp); 755 break; 756#endif /* LWIP_TCP */ 757#if LWIP_ICMP6 758 case IP6_NEXTH_ICMP6: 759 /* Point to payload. */ 760 pbuf_header(p, -(s16_t)ip_data.current_ip_header_tot_len); 761 icmp6_input(p, inp); 762 break; 763#endif /* LWIP_ICMP */ 764 default: 765#if LWIP_ICMP6 766 /* send ICMP parameter problem unless it was a multicast or ICMPv6 */ 767 if ((!ip6_addr_ismulticast(ip6_current_dest_addr())) && 768 (IP6H_NEXTH(ip6hdr) != IP6_NEXTH_ICMP6)) { 769 icmp6_param_problem(p, ICMP6_PP_HEADER, ip_data.current_ip_header_tot_len - hlen); 770 } 771#endif /* LWIP_ICMP */ 772 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip6_input: Unsupported transport protocol %"U16_F"\n", (u16_t)IP6H_NEXTH(ip6hdr))); 773 pbuf_free(p); 774 IP6_STATS_INC(ip6.proterr); 775 IP6_STATS_INC(ip6.drop); 776 break; 777 } 778 } 779 780ip6_input_cleanup: 781 ip_data.current_netif = NULL; 782 ip_data.current_input_netif = NULL; 783 ip_data.current_ip6_header = NULL; 784 ip_data.current_ip_header_tot_len = 0; 785 ip6_addr_set_zero(ip6_current_src_addr()); 786 ip6_addr_set_zero(ip6_current_dest_addr()); 787 788 return ERR_OK; 789} 790 791 792/** 793 * Sends an IPv6 packet on a network interface. This function constructs 794 * the IPv6 header. If the source IPv6 address is NULL, the IPv6 "ANY" address is 795 * used as source (usually during network startup). If the source IPv6 address it 796 * IP6_ADDR_ANY, the most appropriate IPv6 address of the outgoing network 797 * interface is filled in as source address. If the destination IPv6 address is 798 * LWIP_IP_HDRINCL, p is assumed to already include an IPv6 header and 799 * p->payload points to it instead of the data. 800 * 801 * @param p the packet to send (p->payload points to the data, e.g. next 802 protocol header; if dest == LWIP_IP_HDRINCL, p already includes an 803 IPv6 header and p->payload points to that IPv6 header) 804 * @param src the source IPv6 address to send from (if src == IP6_ADDR_ANY, an 805 * IP address of the netif is selected and used as source address. 806 * if src == NULL, IP6_ADDR_ANY is used as source) 807 * @param dest the destination IPv6 address to send the packet to 808 * @param hl the Hop Limit value to be set in the IPv6 header 809 * @param tc the Traffic Class value to be set in the IPv6 header 810 * @param nexth the Next Header to be set in the IPv6 header 811 * @param netif the netif on which to send this packet 812 * @return ERR_OK if the packet was sent OK 813 * ERR_BUF if p doesn't have enough space for IPv6/LINK headers 814 * returns errors returned by netif->output 815 */ 816err_t 817ip6_output_if(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, 818 u8_t hl, u8_t tc, 819 u8_t nexth, struct netif *netif) 820{ 821 const ip6_addr_t *src_used = src; 822 if (dest != LWIP_IP_HDRINCL) { 823 if (src != NULL && ip6_addr_isany(src)) { 824 src_used = ip_2_ip6(ip6_select_source_address(netif, dest)); 825 if ((src_used == NULL) || ip6_addr_isany(src_used)) { 826 /* No appropriate source address was found for this packet. */ 827 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip6_output: No suitable source address for packet.\n")); 828 IP6_STATS_INC(ip6.rterr); 829 return ERR_RTE; 830 } 831 } 832 } 833 return ip6_output_if_src(p, src_used, dest, hl, tc, nexth, netif); 834} 835 836/** 837 * Same as ip6_output_if() but 'src' address is not replaced by netif address 838 * when it is 'any'. 839 */ 840err_t 841ip6_output_if_src(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, 842 u8_t hl, u8_t tc, 843 u8_t nexth, struct netif *netif) 844{ 845 struct ip6_hdr *ip6hdr; 846 ip6_addr_t dest_addr; 847 848 LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p); 849 850 /* Should the IPv6 header be generated or is it already included in p? */ 851 if (dest != LWIP_IP_HDRINCL) { 852 /* generate IPv6 header */ 853 if (pbuf_header(p, IP6_HLEN)) { 854 LWIP_DEBUGF(IP6_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("ip6_output: not enough room for IPv6 header in pbuf\n")); 855 IP6_STATS_INC(ip6.err); 856 return ERR_BUF; 857 } 858 859 ip6hdr = (struct ip6_hdr *)p->payload; 860 LWIP_ASSERT("check that first pbuf can hold struct ip6_hdr", 861 (p->len >= sizeof(struct ip6_hdr))); 862 863 IP6H_HOPLIM_SET(ip6hdr, hl); 864 IP6H_NEXTH_SET(ip6hdr, nexth); 865 866 /* dest cannot be NULL here */ 867 ip6_addr_copy(ip6hdr->dest, *dest); 868 869 IP6H_VTCFL_SET(ip6hdr, 6, tc, 0); 870 IP6H_PLEN_SET(ip6hdr, p->tot_len - IP6_HLEN); 871 872 if (src == NULL) { 873 src = IP6_ADDR_ANY6; 874 } 875 /* src cannot be NULL here */ 876 ip6_addr_copy(ip6hdr->src, *src); 877 878 } else { 879 /* IP header already included in p */ 880 ip6hdr = (struct ip6_hdr *)p->payload; 881 ip6_addr_copy(dest_addr, ip6hdr->dest); 882 dest = &dest_addr; 883 } 884 885 IP6_STATS_INC(ip6.xmit); 886 887 LWIP_DEBUGF(IP6_DEBUG, ("ip6_output_if: %c%c%"U16_F"\n", netif->name[0], netif->name[1], (u16_t)netif->num)); 888 ip6_debug_print(p); 889 890#if ENABLE_LOOPBACK 891 { 892 int i; 893#if !LWIP_HAVE_LOOPIF 894 if (ip6_addr_isloopback(dest)) { 895 return netif_loop_output(netif, p); 896 } 897#endif /* !LWIP_HAVE_LOOPIF */ 898 for (i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) { 899 if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i)) && 900 ip6_addr_cmp(dest, netif_ip6_addr(netif, i))) { 901 /* Packet to self, enqueue it for loopback */ 902 LWIP_DEBUGF(IP6_DEBUG, ("netif_loop_output()\n")); 903 return netif_loop_output(netif, p); 904 } 905 } 906 } 907#endif /* ENABLE_LOOPBACK */ 908#if LWIP_IPV6_FRAG 909 /* don't fragment if interface has mtu set to 0 [loopif] */ 910 if (netif->mtu && (p->tot_len > nd6_get_destination_mtu(dest, netif))) { 911 return ip6_frag(p, netif, dest); 912 } 913#endif /* LWIP_IPV6_FRAG */ 914 915 LWIP_DEBUGF(IP6_DEBUG, ("netif->output_ip6()\n")); 916 return netif->output_ip6(netif, p, dest); 917} 918 919/** 920 * Simple interface to ip6_output_if. It finds the outgoing network 921 * interface and calls upon ip6_output_if to do the actual work. 922 * 923 * @param p the packet to send (p->payload points to the data, e.g. next 924 protocol header; if dest == LWIP_IP_HDRINCL, p already includes an 925 IPv6 header and p->payload points to that IPv6 header) 926 * @param src the source IPv6 address to send from (if src == IP6_ADDR_ANY, an 927 * IP address of the netif is selected and used as source address. 928 * if src == NULL, IP6_ADDR_ANY is used as source) 929 * @param dest the destination IPv6 address to send the packet to 930 * @param hl the Hop Limit value to be set in the IPv6 header 931 * @param tc the Traffic Class value to be set in the IPv6 header 932 * @param nexth the Next Header to be set in the IPv6 header 933 * 934 * @return ERR_RTE if no route is found 935 * see ip_output_if() for more return values 936 */ 937err_t 938ip6_output(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, 939 u8_t hl, u8_t tc, u8_t nexth) 940{ 941 struct netif *netif; 942 struct ip6_hdr *ip6hdr; 943 ip6_addr_t src_addr, dest_addr; 944 945 LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p); 946 947 if (dest != LWIP_IP_HDRINCL) { 948 netif = ip6_route(src, dest); 949 } else { 950 /* IP header included in p, read addresses. */ 951 ip6hdr = (struct ip6_hdr *)p->payload; 952 ip6_addr_copy(src_addr, ip6hdr->src); 953 ip6_addr_copy(dest_addr, ip6hdr->dest); 954 netif = ip6_route(&src_addr, &dest_addr); 955 } 956 957 if (netif == NULL) { 958 LWIP_DEBUGF(IP6_DEBUG, ("ip6_output: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n", 959 IP6_ADDR_BLOCK1(dest), 960 IP6_ADDR_BLOCK2(dest), 961 IP6_ADDR_BLOCK3(dest), 962 IP6_ADDR_BLOCK4(dest), 963 IP6_ADDR_BLOCK5(dest), 964 IP6_ADDR_BLOCK6(dest), 965 IP6_ADDR_BLOCK7(dest), 966 IP6_ADDR_BLOCK8(dest))); 967 IP6_STATS_INC(ip6.rterr); 968 return ERR_RTE; 969 } 970 971 return ip6_output_if(p, src, dest, hl, tc, nexth, netif); 972} 973 974 975#if LWIP_NETIF_HWADDRHINT 976/** Like ip6_output, but takes and addr_hint pointer that is passed on to netif->addr_hint 977 * before calling ip6_output_if. 978 * 979 * @param p the packet to send (p->payload points to the data, e.g. next 980 protocol header; if dest == LWIP_IP_HDRINCL, p already includes an 981 IPv6 header and p->payload points to that IPv6 header) 982 * @param src the source IPv6 address to send from (if src == IP6_ADDR_ANY, an 983 * IP address of the netif is selected and used as source address. 984 * if src == NULL, IP6_ADDR_ANY is used as source) 985 * @param dest the destination IPv6 address to send the packet to 986 * @param hl the Hop Limit value to be set in the IPv6 header 987 * @param tc the Traffic Class value to be set in the IPv6 header 988 * @param nexth the Next Header to be set in the IPv6 header 989 * @param addr_hint address hint pointer set to netif->addr_hint before 990 * calling ip_output_if() 991 * 992 * @return ERR_RTE if no route is found 993 * see ip_output_if() for more return values 994 */ 995err_t 996ip6_output_hinted(struct pbuf *p, const ip6_addr_t *src, const ip6_addr_t *dest, 997 u8_t hl, u8_t tc, u8_t nexth, u8_t *addr_hint) 998{ 999 struct netif *netif; 1000 struct ip6_hdr *ip6hdr; 1001 ip6_addr_t src_addr, dest_addr; 1002 err_t err; 1003 1004 LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p); 1005 1006 if (dest != LWIP_IP_HDRINCL) { 1007 netif = ip6_route(src, dest); 1008 } else { 1009 /* IP header included in p, read addresses. */ 1010 ip6hdr = (struct ip6_hdr *)p->payload; 1011 ip6_addr_copy(src_addr, ip6hdr->src); 1012 ip6_addr_copy(dest_addr, ip6hdr->dest); 1013 netif = ip6_route(&src_addr, &dest_addr); 1014 } 1015 1016 if (netif == NULL) { 1017 LWIP_DEBUGF(IP6_DEBUG, ("ip6_output: no route for %"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F":%"X16_F"\n", 1018 IP6_ADDR_BLOCK1(dest), 1019 IP6_ADDR_BLOCK2(dest), 1020 IP6_ADDR_BLOCK3(dest), 1021 IP6_ADDR_BLOCK4(dest), 1022 IP6_ADDR_BLOCK5(dest), 1023 IP6_ADDR_BLOCK6(dest), 1024 IP6_ADDR_BLOCK7(dest), 1025 IP6_ADDR_BLOCK8(dest))); 1026 IP6_STATS_INC(ip6.rterr); 1027 return ERR_RTE; 1028 } 1029 1030 NETIF_SET_HWADDRHINT(netif, addr_hint); 1031 err = ip6_output_if(p, src, dest, hl, tc, nexth, netif); 1032 NETIF_SET_HWADDRHINT(netif, NULL); 1033 1034 return err; 1035} 1036#endif /* LWIP_NETIF_HWADDRHINT*/ 1037 1038#if LWIP_IPV6_MLD 1039/** 1040 * Add a hop-by-hop options header with a router alert option and padding. 1041 * 1042 * Used by MLD when sending a Multicast listener report/done message. 1043 * 1044 * @param p the packet to which we will prepend the options header 1045 * @param nexth the next header protocol number (e.g. IP6_NEXTH_ICMP6) 1046 * @param value the value of the router alert option data (e.g. IP6_ROUTER_ALERT_VALUE_MLD) 1047 * @return ERR_OK if hop-by-hop header was added, ERR_* otherwise 1048 */ 1049err_t 1050ip6_options_add_hbh_ra(struct pbuf *p, u8_t nexth, u8_t value) 1051{ 1052 struct ip6_hbh_hdr *hbh_hdr; 1053 1054 /* Move pointer to make room for hop-by-hop options header. */ 1055 if (pbuf_header(p, sizeof(struct ip6_hbh_hdr))) { 1056 LWIP_DEBUGF(IP6_DEBUG, ("ip6_options: no space for options header\n")); 1057 IP6_STATS_INC(ip6.err); 1058 return ERR_BUF; 1059 } 1060 1061 hbh_hdr = (struct ip6_hbh_hdr *)p->payload; 1062 1063 /* Set fields. */ 1064 hbh_hdr->_nexth = nexth; 1065 hbh_hdr->_hlen = 0; 1066 hbh_hdr->_ra_opt_type = IP6_ROUTER_ALERT_OPTION; 1067 hbh_hdr->_ra_opt_dlen = 2; 1068 hbh_hdr->_ra_opt_data = value; 1069 hbh_hdr->_padn_opt_type = IP6_PADN_ALERT_OPTION; 1070 hbh_hdr->_padn_opt_dlen = 0; 1071 1072 return ERR_OK; 1073} 1074#endif /* LWIP_IPV6_MLD */ 1075 1076#if IP6_DEBUG 1077/* Print an IPv6 header by using LWIP_DEBUGF 1078 * @param p an IPv6 packet, p->payload pointing to the IPv6 header 1079 */ 1080void 1081ip6_debug_print(struct pbuf *p) 1082{ 1083 struct ip6_hdr *ip6hdr = (struct ip6_hdr *)p->payload; 1084 1085 LWIP_DEBUGF(IP6_DEBUG, ("IPv6 header:\n")); 1086 LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); 1087 LWIP_DEBUGF(IP6_DEBUG, ("| %2"U16_F" | %3"U16_F" | %7"U32_F" | (ver, class, flow)\n", 1088 IP6H_V(ip6hdr), 1089 IP6H_TC(ip6hdr), 1090 IP6H_FL(ip6hdr))); 1091 LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); 1092 LWIP_DEBUGF(IP6_DEBUG, ("| %5"U16_F" | %3"U16_F" | %3"U16_F" | (plen, nexth, hopl)\n", 1093 IP6H_PLEN(ip6hdr), 1094 IP6H_NEXTH(ip6hdr), 1095 IP6H_HOPLIM(ip6hdr))); 1096 LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); 1097 LWIP_DEBUGF(IP6_DEBUG, ("| %4"X32_F" | %4"X32_F" | %4"X32_F" | %4"X32_F" | (src)\n", 1098 IP6_ADDR_BLOCK1(&(ip6hdr->src)), 1099 IP6_ADDR_BLOCK2(&(ip6hdr->src)), 1100 IP6_ADDR_BLOCK3(&(ip6hdr->src)), 1101 IP6_ADDR_BLOCK4(&(ip6hdr->src)))); 1102 LWIP_DEBUGF(IP6_DEBUG, ("| %4"X32_F" | %4"X32_F" | %4"X32_F" | %4"X32_F" |\n", 1103 IP6_ADDR_BLOCK5(&(ip6hdr->src)), 1104 IP6_ADDR_BLOCK6(&(ip6hdr->src)), 1105 IP6_ADDR_BLOCK7(&(ip6hdr->src)), 1106 IP6_ADDR_BLOCK8(&(ip6hdr->src)))); 1107 LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); 1108 LWIP_DEBUGF(IP6_DEBUG, ("| %4"X32_F" | %4"X32_F" | %4"X32_F" | %4"X32_F" | (dest)\n", 1109 IP6_ADDR_BLOCK1(&(ip6hdr->dest)), 1110 IP6_ADDR_BLOCK2(&(ip6hdr->dest)), 1111 IP6_ADDR_BLOCK3(&(ip6hdr->dest)), 1112 IP6_ADDR_BLOCK4(&(ip6hdr->dest)))); 1113 LWIP_DEBUGF(IP6_DEBUG, ("| %4"X32_F" | %4"X32_F" | %4"X32_F" | %4"X32_F" |\n", 1114 IP6_ADDR_BLOCK5(&(ip6hdr->dest)), 1115 IP6_ADDR_BLOCK6(&(ip6hdr->dest)), 1116 IP6_ADDR_BLOCK7(&(ip6hdr->dest)), 1117 IP6_ADDR_BLOCK8(&(ip6hdr->dest)))); 1118 LWIP_DEBUGF(IP6_DEBUG, ("+-------------------------------+\n")); 1119} 1120#endif /* IP6_DEBUG */ 1121 1122#endif /* LWIP_IPV6 */ 1123