| if_gre.c (147643) | if_gre.c (148613) |
|---|---|
| 1/* $NetBSD: if_gre.c,v 1.49 2003/12/11 00:22:29 itojun Exp $ */ | 1/* $NetBSD: if_gre.c,v 1.49 2003/12/11 00:22:29 itojun Exp $ */ |
| 2/* $FreeBSD: head/sys/net/if_gre.c 147643 2005-06-28 06:55:45Z bz $ */ | 2/* $FreeBSD: head/sys/net/if_gre.c 148613 2005-08-01 08:14:21Z bz $ */ |
| 3 4/*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Heiko W.Rupp <hwr@pilhuhn.de> 10 * | 3 4/*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Heiko W.Rupp <hwr@pilhuhn.de> 10 * |
| 11 * IPv6-over-GRE contributed by Gert Doering <gert@greenie.muc.de> 12 * |
|
| 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. --- 15 unchanged lines hidden (view full) --- 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40/* 41 * Encapsulate L3 protocols into IP | 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. --- 15 unchanged lines hidden (view full) --- 36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 39 * POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42/* 43 * Encapsulate L3 protocols into IP |
| 42 * See RFC 1701 and 1702 for more details. | 44 * See RFC 2784 (successor of RFC 1701 and 1702) for more details. |
| 43 * If_gre is compatible with Cisco GRE tunnels, so you can 44 * have a NetBSD box as the other end of a tunnel interface of a Cisco 45 * router. See gre(4) for more details. 46 * Also supported: IP in IP encaps (proto 55) as of RFC 2004 47 */ 48 49#include "opt_atalk.h" 50#include "opt_inet.h" --- 181 unchanged lines hidden (view full) --- 232static int 233gre_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, 234 struct rtentry *rt) 235{ 236 int error = 0; 237 struct gre_softc *sc = ifp->if_softc; 238 struct greip *gh; 239 struct ip *ip; | 45 * If_gre is compatible with Cisco GRE tunnels, so you can 46 * have a NetBSD box as the other end of a tunnel interface of a Cisco 47 * router. See gre(4) for more details. 48 * Also supported: IP in IP encaps (proto 55) as of RFC 2004 49 */ 50 51#include "opt_atalk.h" 52#include "opt_inet.h" --- 181 unchanged lines hidden (view full) --- 234static int 235gre_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, 236 struct rtentry *rt) 237{ 238 int error = 0; 239 struct gre_softc *sc = ifp->if_softc; 240 struct greip *gh; 241 struct ip *ip; |
| 242 u_short ip_id = 0; 243 uint8_t ip_tos = 0; |
|
| 240 u_int16_t etype = 0; 241 struct mobile_h mob_h; 242 u_int32_t af; 243 244 /* 245 * gre may cause infinite recursion calls when misconfigured. 246 * We'll prevent this by introducing upper limit. 247 */ --- 99 unchanged lines hidden (view full) --- 347 m_freem(m); 348 error = EINVAL; 349 goto end; 350 } 351 } else if (sc->g_proto == IPPROTO_GRE) { 352 switch (dst->sa_family) { 353 case AF_INET: 354 ip = mtod(m, struct ip *); | 244 u_int16_t etype = 0; 245 struct mobile_h mob_h; 246 u_int32_t af; 247 248 /* 249 * gre may cause infinite recursion calls when misconfigured. 250 * We'll prevent this by introducing upper limit. 251 */ --- 99 unchanged lines hidden (view full) --- 351 m_freem(m); 352 error = EINVAL; 353 goto end; 354 } 355 } else if (sc->g_proto == IPPROTO_GRE) { 356 switch (dst->sa_family) { 357 case AF_INET: 358 ip = mtod(m, struct ip *); |
| 359 ip_tos = ip->ip_tos; 360 ip_id = ip->ip_id; |
|
| 355 etype = ETHERTYPE_IP; 356 break; | 361 etype = ETHERTYPE_IP; 362 break; |
| 363#ifdef INET6 364 case AF_INET6: 365 ip_id = ip_newid(); 366 etype = ETHERTYPE_IPV6; 367 break; 368#endif |
|
| 357#ifdef NETATALK 358 case AF_APPLETALK: 359 etype = ETHERTYPE_ATALK; 360 break; 361#endif 362 default: 363 _IF_DROP(&ifp->if_snd); 364 m_freem(m); --- 23 unchanged lines hidden (view full) --- 388 389 gh->gi_pr = sc->g_proto; 390 if (sc->g_proto != IPPROTO_MOBILE) { 391 gh->gi_src = sc->g_src; 392 gh->gi_dst = sc->g_dst; 393 ((struct ip*)gh)->ip_v = IPPROTO_IPV4; 394 ((struct ip*)gh)->ip_hl = (sizeof(struct ip)) >> 2; 395 ((struct ip*)gh)->ip_ttl = GRE_TTL; | 369#ifdef NETATALK 370 case AF_APPLETALK: 371 etype = ETHERTYPE_ATALK; 372 break; 373#endif 374 default: 375 _IF_DROP(&ifp->if_snd); 376 m_freem(m); --- 23 unchanged lines hidden (view full) --- 400 401 gh->gi_pr = sc->g_proto; 402 if (sc->g_proto != IPPROTO_MOBILE) { 403 gh->gi_src = sc->g_src; 404 gh->gi_dst = sc->g_dst; 405 ((struct ip*)gh)->ip_v = IPPROTO_IPV4; 406 ((struct ip*)gh)->ip_hl = (sizeof(struct ip)) >> 2; 407 ((struct ip*)gh)->ip_ttl = GRE_TTL; |
| 396 ((struct ip*)gh)->ip_tos = ip->ip_tos; 397 ((struct ip*)gh)->ip_id = ip->ip_id; | 408 ((struct ip*)gh)->ip_tos = ip_tos; 409 ((struct ip*)gh)->ip_id = ip_id; |
| 398 gh->gi_len = m->m_pkthdr.len; 399 } 400 401 ifp->if_opackets++; 402 ifp->if_obytes += m->m_pkthdr.len; 403 /* 404 * Send it off and with IP_FORWARD flag to prevent it from 405 * overwriting the ip_id again. ip_id is already set to the --- 62 unchanged lines hidden (view full) --- 468 error = EAFNOSUPPORT; 469 break; 470 } 471 switch (ifr->ifr_addr.sa_family) { 472#ifdef INET 473 case AF_INET: 474 break; 475#endif | 410 gh->gi_len = m->m_pkthdr.len; 411 } 412 413 ifp->if_opackets++; 414 ifp->if_obytes += m->m_pkthdr.len; 415 /* 416 * Send it off and with IP_FORWARD flag to prevent it from 417 * overwriting the ip_id again. ip_id is already set to the --- 62 unchanged lines hidden (view full) --- 480 error = EAFNOSUPPORT; 481 break; 482 } 483 switch (ifr->ifr_addr.sa_family) { 484#ifdef INET 485 case AF_INET: 486 break; 487#endif |
| 488#ifdef INET6 489 case AF_INET6: 490 break; 491#endif |
|
| 476 default: 477 error = EAFNOSUPPORT; 478 break; 479 } 480 break; 481 case GRESPROTO: 482 if ((error = suser(curthread)) != 0) 483 break; --- 315 unchanged lines hidden --- | 492 default: 493 error = EAFNOSUPPORT; 494 break; 495 } 496 break; 497 case GRESPROTO: 498 if ((error = suser(curthread)) != 0) 499 break; --- 315 unchanged lines hidden --- |