| ip_icmp.c (51282) | ip_icmp.c (55009) |
|---|---|
| 1/* 2 * Copyright (c) 1982, 1986, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 17 unchanged lines hidden (view full) --- 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)ip_icmp.c 8.2 (Berkeley) 1/4/94 | 1/* 2 * Copyright (c) 1982, 1986, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 17 unchanged lines hidden (view full) --- 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)ip_icmp.c 8.2 (Berkeley) 1/4/94 |
| 34 * $FreeBSD: head/sys/netinet/ip_icmp.c 51282 1999-09-14 16:40:28Z des $ | 34 * $FreeBSD: head/sys/netinet/ip_icmp.c 55009 1999-12-22 19:13:38Z shin $ |
| 35 */ 36 | 35 */ 36 |
| 37#include "opt_ipsec.h" 38 |
|
| 37#include <sys/param.h> 38#include <sys/systm.h> 39#include <sys/mbuf.h> 40#include <sys/protosw.h> 41#include <sys/socket.h> 42#include <sys/time.h> 43#include <sys/kernel.h> 44#include <sys/sysctl.h> --- 5 unchanged lines hidden (view full) --- 50#include <netinet/in.h> 51#include <netinet/in_systm.h> 52#include <netinet/in_var.h> 53#include <netinet/ip.h> 54#include <netinet/ip_icmp.h> 55#include <netinet/ip_var.h> 56#include <netinet/icmp_var.h> 57 | 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/mbuf.h> 42#include <sys/protosw.h> 43#include <sys/socket.h> 44#include <sys/time.h> 45#include <sys/kernel.h> 46#include <sys/sysctl.h> --- 5 unchanged lines hidden (view full) --- 52#include <netinet/in.h> 53#include <netinet/in_systm.h> 54#include <netinet/in_var.h> 55#include <netinet/ip.h> 56#include <netinet/ip_icmp.h> 57#include <netinet/ip_var.h> 58#include <netinet/icmp_var.h> 59 |
| 60#ifdef IPSEC 61#include <netinet6/ipsec.h> 62#include <netkey/key.h> 63#endif 64 65#include "faith.h" 66#if defined(NFAITH) && NFAITH > 0 67#include <net/if_types.h> 68#endif 69 |
|
| 58/* 59 * ICMP routines: error generation, receive packet processing, and 60 * routines to turnaround packets back to the originator, and 61 * host table maintenance routines. 62 */ 63 64static struct icmpstat icmpstat; 65SYSCTL_STRUCT(_net_inet_icmp, ICMPCTL_STATS, stats, CTLFLAG_RD, --- 148 unchanged lines hidden (view full) --- 214static struct sockaddr_in icmpsrc = { sizeof (struct sockaddr_in), AF_INET }; 215static struct sockaddr_in icmpdst = { sizeof (struct sockaddr_in), AF_INET }; 216static struct sockaddr_in icmpgw = { sizeof (struct sockaddr_in), AF_INET }; 217 218/* 219 * Process a received ICMP message. 220 */ 221void | 70/* 71 * ICMP routines: error generation, receive packet processing, and 72 * routines to turnaround packets back to the originator, and 73 * host table maintenance routines. 74 */ 75 76static struct icmpstat icmpstat; 77SYSCTL_STRUCT(_net_inet_icmp, ICMPCTL_STATS, stats, CTLFLAG_RD, --- 148 unchanged lines hidden (view full) --- 226static struct sockaddr_in icmpsrc = { sizeof (struct sockaddr_in), AF_INET }; 227static struct sockaddr_in icmpdst = { sizeof (struct sockaddr_in), AF_INET }; 228static struct sockaddr_in icmpgw = { sizeof (struct sockaddr_in), AF_INET }; 229 230/* 231 * Process a received ICMP message. 232 */ 233void |
| 222icmp_input(m, hlen) | 234icmp_input(m, off, proto) |
| 223 register struct mbuf *m; | 235 register struct mbuf *m; |
| 224 int hlen; | 236 int off, proto; |
| 225{ | 237{ |
| 238 int hlen = off; |
|
| 226 register struct icmp *icp; 227 register struct ip *ip = mtod(m, struct ip *); 228 int icmplen = ip->ip_len; 229 register int i; 230 struct in_ifaddr *ia; 231 void (*ctlfunc) __P((int, struct sockaddr *, void *)); 232 int code; 233 --- 24 unchanged lines hidden (view full) --- 258 icp = mtod(m, struct icmp *); 259 if (in_cksum(m, icmplen)) { 260 icmpstat.icps_checksum++; 261 goto freeit; 262 } 263 m->m_len += hlen; 264 m->m_data -= hlen; 265 | 239 register struct icmp *icp; 240 register struct ip *ip = mtod(m, struct ip *); 241 int icmplen = ip->ip_len; 242 register int i; 243 struct in_ifaddr *ia; 244 void (*ctlfunc) __P((int, struct sockaddr *, void *)); 245 int code; 246 --- 24 unchanged lines hidden (view full) --- 271 icp = mtod(m, struct icmp *); 272 if (in_cksum(m, icmplen)) { 273 icmpstat.icps_checksum++; 274 goto freeit; 275 } 276 m->m_len += hlen; 277 m->m_data -= hlen; 278 |
| 279#if defined(NFAITH) && 0 < NFAITH 280 if (m->m_pkthdr.rcvif && m->m_pkthdr.rcvif->if_type == IFT_FAITH) { 281 /* 282 * Deliver very specific ICMP type only. 283 */ 284 switch (icp->icmp_type) { 285 case ICMP_UNREACH: 286 case ICMP_TIMXCEED: 287 break; 288 default: 289 goto freeit; 290 } 291 } 292#endif 293 |
|
| 266#ifdef ICMPPRINTFS 267 if (icmpprintfs) 268 printf("icmp_input, type %d code %d\n", icp->icmp_type, 269 icp->icmp_code); 270#endif 271 | 294#ifdef ICMPPRINTFS 295 if (icmpprintfs) 296 printf("icmp_input, type %d code %d\n", icp->icmp_type, 297 icp->icmp_code); 298#endif 299 |
| 300#ifdef IPSEC 301 /* drop it if it does not match the policy */ 302 /* XXX Is there meaning of check in here ? */ 303 if (ipsec4_in_reject(m, NULL)) { 304 ipsecstat.in_polvio++; 305 goto freeit; 306 } 307#endif 308 |
|
| 272 /* 273 * Message type specific processing. 274 */ 275 if (icp->icmp_type > ICMP_MAXTYPE) 276 goto raw; 277 icmpstat.icps_inhist[icp->icmp_type]++; 278 code = icp->icmp_code; 279 switch (icp->icmp_type) { --- 109 unchanged lines hidden (view full) --- 389 rt->rt_rmx.rmx_mtu = mtu; 390 } 391 } 392 if (rt) 393 RTFREE(rt); 394 } 395 396#endif | 309 /* 310 * Message type specific processing. 311 */ 312 if (icp->icmp_type > ICMP_MAXTYPE) 313 goto raw; 314 icmpstat.icps_inhist[icp->icmp_type]++; 315 code = icp->icmp_code; 316 switch (icp->icmp_type) { --- 109 unchanged lines hidden (view full) --- 426 rt->rt_rmx.rmx_mtu = mtu; 427 } 428 } 429 if (rt) 430 RTFREE(rt); 431 } 432 433#endif |
| 434 /* 435 * XXX if the packet contains [IPv4 AH TCP], we can't make a 436 * notification to TCP layer. 437 */ |
|
| 397 ctlfunc = inetsw[ip_protox[icp->icmp_ip.ip_p]].pr_ctlinput; 398 if (ctlfunc) 399 (*ctlfunc)(code, (struct sockaddr *)&icmpsrc, 400 (void *)&icp->icmp_ip); 401 break; 402 403 badcode: 404 icmpstat.icps_badcode++; --- 108 unchanged lines hidden (view full) --- 513 } 514#endif 515 icmpsrc.sin_addr = icp->icmp_ip.ip_dst; 516 rtredirect((struct sockaddr *)&icmpsrc, 517 (struct sockaddr *)&icmpdst, 518 (struct sockaddr *)0, RTF_GATEWAY | RTF_HOST, 519 (struct sockaddr *)&icmpgw, (struct rtentry **)0); 520 pfctlinput(PRC_REDIRECT_HOST, (struct sockaddr *)&icmpsrc); | 438 ctlfunc = inetsw[ip_protox[icp->icmp_ip.ip_p]].pr_ctlinput; 439 if (ctlfunc) 440 (*ctlfunc)(code, (struct sockaddr *)&icmpsrc, 441 (void *)&icp->icmp_ip); 442 break; 443 444 badcode: 445 icmpstat.icps_badcode++; --- 108 unchanged lines hidden (view full) --- 554 } 555#endif 556 icmpsrc.sin_addr = icp->icmp_ip.ip_dst; 557 rtredirect((struct sockaddr *)&icmpsrc, 558 (struct sockaddr *)&icmpdst, 559 (struct sockaddr *)0, RTF_GATEWAY | RTF_HOST, 560 (struct sockaddr *)&icmpgw, (struct rtentry **)0); 561 pfctlinput(PRC_REDIRECT_HOST, (struct sockaddr *)&icmpsrc); |
| 562#ifdef IPSEC 563 key_sa_routechange((struct sockaddr *)&icmpsrc); 564#endif |
|
| 521 break; 522 523 /* 524 * No kernel processing for the following; 525 * just fall through to send to raw listener. 526 */ 527 case ICMP_ECHOREPLY: 528 case ICMP_ROUTERADVERT: 529 case ICMP_ROUTERSOLICIT: 530 case ICMP_TSTAMPREPLY: 531 case ICMP_IREQREPLY: 532 case ICMP_MASKREPLY: 533 default: 534 break; 535 } 536 537raw: | 565 break; 566 567 /* 568 * No kernel processing for the following; 569 * just fall through to send to raw listener. 570 */ 571 case ICMP_ECHOREPLY: 572 case ICMP_ROUTERADVERT: 573 case ICMP_ROUTERSOLICIT: 574 case ICMP_TSTAMPREPLY: 575 case ICMP_IREQREPLY: 576 case ICMP_MASKREPLY: 577 default: 578 break; 579 } 580 581raw: |
| 538 rip_input(m, hlen); | 582 rip_input(m, off, proto); |
| 539 return; 540 541freeit: 542 m_freem(m); 543} 544 545/* 546 * Reflect the ip packet back to the source --- 275 unchanged lines hidden --- | 583 return; 584 585freeit: 586 m_freem(m); 587} 588 589/* 590 * Reflect the ip packet back to the source --- 275 unchanged lines hidden --- |