1/* 2 * Copyright (c) 1988-1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Copyright (c) 1998-2012 Michael Richardson <mcr@tcpdump.org> 6 * The TCPDUMP project 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that: (1) source code distributions 10 * retain the above copyright notice and this paragraph in its entirety, (2) 11 * distributions including binary code include the above copyright notice and 12 * this paragraph in its entirety in the documentation or other materials 13 * provided with the distribution, and (3) all advertising materials mentioning 14 * features or use of this software display the following acknowledgement: 15 * ``This product includes software developed by the University of California, 16 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 17 * the University nor the names of its contributors may be used to endorse 18 * or promote products derived from this software without specific prior 19 * written permission. 20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 21 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 23 * 24 * @(#) $Header: /tcpdump/master/tcpdump/netdissect.h,v 1.27 2008-08-16 11:36:20 hannes Exp $ (LBL) 25 */ 26 27#ifndef netdissect_h 28#define netdissect_h 29 30#ifdef HAVE_OS_PROTO_H 31#include "os-proto.h" 32#endif 33#include <sys/types.h> 34 35#ifndef HAVE___ATTRIBUTE__ 36#define __attribute__(x) 37#endif 38 39/* snprintf et al */ 40 41#include <stdarg.h> 42 43#if !defined(HAVE_SNPRINTF) 44int snprintf (char *str, size_t sz, const char *format, ...) 45 __attribute__ ((format (printf, 3, 4))); 46#endif 47 48#if !defined(HAVE_VSNPRINTF) 49int vsnprintf (char *str, size_t sz, const char *format, va_list ap) 50 __attribute__((format (printf, 3, 0))); 51#endif 52 53#ifndef HAVE_STRLCAT 54extern size_t strlcat (char *, const char *, size_t); 55#endif 56#ifndef HAVE_STRLCPY 57extern size_t strlcpy (char *, const char *, size_t); 58#endif 59 60#ifndef HAVE_STRDUP 61extern char *strdup (const char *str); 62#endif 63 64#ifndef HAVE_STRSEP 65extern char *strsep(char **, const char *); 66#endif 67 68struct tok { 69 int v; /* value */ 70 const char *s; /* string */ 71}; 72 73#define TOKBUFSIZE 128 74extern const char *tok2strbuf(const struct tok *, const char *, int, 75 char *buf, size_t bufsize); 76 77/* tok2str is deprecated */ 78extern const char *tok2str(const struct tok *, const char *, int); 79extern char *bittok2str(const struct tok *, const char *, int); 80extern char *bittok2str_nosep(const struct tok *, const char *, int); 81 82typedef struct netdissect_options netdissect_options; 83 84struct netdissect_options { 85 int ndo_aflag; /* translate network and broadcast addresses */ 86 int ndo_bflag; /* print 4 byte ASes in ASDOT notation */ 87 int ndo_eflag; /* print ethernet header */ 88 int ndo_fflag; /* don't translate "foreign" IP address */ 89#ifdef __APPLE__ 90 int ndo_kflag; /* don't print the libpcap comment field */ 91#endif 92 int ndo_Kflag; /* don't check TCP checksums */ 93 int ndo_nflag; /* leave addresses as numbers */ 94 int ndo_Nflag; /* remove domains from printed host names */ 95 int ndo_qflag; /* quick (shorter) output */ 96 int ndo_Rflag; /* print sequence # field in AH/ESP*/ 97 int ndo_sflag; /* use the libsmi to translate OIDs */ 98 int ndo_Sflag; /* print raw TCP sequence numbers */ 99 int ndo_tflag; /* print packet arrival time */ 100 int ndo_t0flag; /* default time stamp */ 101 int ndo_t1flag; /* no time stamp */ 102 int ndo_t2flag; /* Unix timeval style */ 103 int ndo_t3flag; /* Microseconds since previous packet */ 104 int ndo_t4flag; /* Default time stamp + Date */ 105 int ndo_t5flag; /* Microseconds since first packet */ 106 int ndo_Uflag; /* "unbuffered" output of dump files */ 107 int ndo_uflag; /* Print undecoded NFS handles */ 108 int ndo_Vflag; /* Print packet number */ 109 int ndo_vflag; /* verbose */ 110 int ndo_xflag; /* print packet in hex */ 111 int ndo_Xflag; /* print packet in hex/ascii */ 112 int ndo_Aflag; /* print packet only in ascii observing TAB, 113 * LF, CR and SPACE as graphical chars 114 */ 115 int ndo_Bflag; /* buffer size */ 116 int ndo_Iflag; /* rfmon (monitor) mode */ 117#ifdef __APPLE__ 118 int ndo_oflag; /* ordinal packet number display */ 119#endif 120 int ndo_Oflag; /* run filter code optimizer */ 121 int ndo_dlt; /* if != -1, ask libpcap for the DLT it names*/ 122 int ndo_jflag; /* packet time stamp source */ 123#ifdef __APPLE__ 124 int ndo_Pflag; /* pcap-ng file format */ 125#endif 126 int ndo_pflag; /* don't go promiscuous */ 127 128 int ndo_Cflag; /* rotate dump files after this many bytes */ 129 int ndo_Cflag_count; /* Keep track of which file number we're writing */ 130#ifdef __APPLE__ 131 int ndo_gflag; /* no line break in verbose mode for easier grepping */ 132#endif 133 int ndo_Gflag; /* rotate dump files after this many seconds */ 134 int ndo_Gflag_count; /* number of files created with Gflag rotation */ 135 time_t ndo_Gflag_time; /* The last time_t the dump file was rotated. */ 136 int ndo_Wflag; /* recycle output files after this number of files */ 137 int ndo_WflagChars; 138 int ndo_Hflag; /* dissect 802.11s draft mesh standard */ 139 int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */ 140 const char *ndo_dltname; 141 142 char *ndo_espsecret; 143 struct sa_list *ndo_sa_list_head; /* used by print-esp.c */ 144 struct sa_list *ndo_sa_default; 145 146 char *ndo_sigsecret; /* Signature verification secret key */ 147 148 struct esp_algorithm *ndo_espsecret_xform; /* cache of decoded */ 149 char *ndo_espsecret_key; 150 151 int ndo_packettype; /* as specified by -T */ 152 153 char *ndo_program_name; /*used to generate self-identifying messages */ 154 155 int32_t ndo_thiszone; /* seconds offset from gmt to local time */ 156 157 int ndo_snaplen; 158 159 void *ndo_pcap; /* For data captured in host byte order (e.g. PCAP-NG) */ 160 161 /*global pointers to beginning and end of current packet (during printing) */ 162 const u_char *ndo_packetp; 163 const u_char *ndo_snapend; 164 165 /* bookkeeping for ^T output */ 166 int ndo_infodelay; 167 168 /* pointer to void function to output stuff */ 169 void (*ndo_default_print)(netdissect_options *, 170 register const u_char *bp, register u_int length); 171 void (*ndo_info)(netdissect_options *, int verbose); 172 173 int (*ndo_printf)(netdissect_options *, 174 const char *fmt, ...) 175#ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS 176 __attribute__ ((format (printf, 2, 3))) 177#endif 178 ; 179 void (*ndo_error)(netdissect_options *, 180 const char *fmt, ...) 181#ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS 182 __attribute__ ((noreturn, format (printf, 2, 3))) 183#endif 184 ; 185 void (*ndo_warning)(netdissect_options *, 186 const char *fmt, ...) 187#ifdef __ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS 188 __attribute__ ((format (printf, 2, 3))) 189#endif 190 ; 191}; 192 193#define PT_VAT 1 /* Visual Audio Tool */ 194#define PT_WB 2 /* distributed White Board */ 195#define PT_RPC 3 /* Remote Procedure Call */ 196#define PT_RTP 4 /* Real-Time Applications protocol */ 197#define PT_RTCP 5 /* Real-Time Applications control protocol */ 198#define PT_SNMP 6 /* Simple Network Management Protocol */ 199#define PT_CNFP 7 /* Cisco NetFlow protocol */ 200#define PT_TFTP 8 /* trivial file transfer protocol */ 201#define PT_AODV 9 /* Ad-hoc On-demand Distance Vector Protocol */ 202#define PT_CARP 10 /* Common Address Redundancy Protocol */ 203#define PT_RADIUS 11 /* RADIUS authentication Protocol */ 204#define PT_ZMTP1 12 /* ZeroMQ Message Transport Protocol 1.0 */ 205#define PT_VXLAN 13 /* Virtual eXtensible Local Area Network */ 206 207#ifndef min 208#define min(a,b) ((a)>(b)?(b):(a)) 209#endif 210#ifndef max 211#define max(a,b) ((b)>(a)?(b):(a)) 212#endif 213 214#ifdef __APPLE__ 215/* 216 * Values of ndo_flags that control printing of packet metadata 217 */ 218#define PRMD_NONE 0x0000 219#define PRMD_IF 0x0001 220#define PRMD_PNAME 0x0002 221#define PRMD_PID 0x0004 222#define PRMD_SVC 0x0008 223#define PRMD_DIR 0x0010 224#define PRMD_COMMENT 0x0020 225#define PRMD_ALL 0xffff 226#endif /* __APPLE__ */ 227 228/* 229 * Maximum snapshot length. This should be enough to capture the full 230 * packet on most network interfaces. 231 * 232 * XXX - could it be larger? If so, should it? Some applications might 233 * use the snapshot length in a savefile header to control the size of 234 * the buffer they allocate, so a size of, say, 2^31-1 might not work 235 * well. 236 */ 237#define MAXIMUM_SNAPLEN 65535 238 239/* 240 * The default snapshot length is the maximum. 241 */ 242#define DEFAULT_SNAPLEN MAXIMUM_SNAPLEN 243 244#define ESRC(ep) ((ep)->ether_shost) 245#define EDST(ep) ((ep)->ether_dhost) 246 247#ifndef NTOHL 248#define NTOHL(x) (x) = ntohl(x) 249#define NTOHS(x) (x) = ntohs(x) 250#define HTONL(x) (x) = htonl(x) 251#define HTONS(x) (x) = htons(x) 252#endif 253 254/* 255 * True if "l" bytes of "var" were captured. 256 * 257 * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure 258 * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows. 259 * 260 * The check is for <= rather than < because "l" might be 0. 261 */ 262#define ND_TTEST2(var, l) (ndo->ndo_snapend - (l) <= ndo->ndo_snapend && \ 263 (const u_char *)&(var) <= ndo->ndo_snapend - (l)) 264 265/* True if "var" was captured */ 266#define ND_TTEST(var) ND_TTEST2(var, sizeof(var)) 267 268/* Bail if "l" bytes of "var" were not captured */ 269#define ND_TCHECK2(var, l) if (!ND_TTEST2(var, l)) goto trunc 270 271/* Bail if "var" was not captured */ 272#define ND_TCHECK(var) ND_TCHECK2(var, sizeof(var)) 273 274#define ND_PRINT(STUFF) (*ndo->ndo_printf)STUFF 275#define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length) 276 277#if 0 278extern void ts_print(netdissect_options *ipdo, 279 const struct timeval *); 280extern void relts_print(int); 281#endif 282 283extern int fn_print(const u_char *, const u_char *); 284extern int fn_printn(const u_char *, u_int, const u_char *); 285extern const char *tok2str(const struct tok *, const char *, int); 286 287extern void wrapup(int); 288 289#if 0 290extern char *read_infile(netdissect_options *, char *); 291extern char *copy_argv(netdissect_options *, char **); 292#endif 293 294extern void safeputchar(int); 295extern void safeputs(const char *, int); 296 297#define PLURAL_SUFFIX(n) \ 298 (((n) != 1) ? "s" : "") 299 300#if 0 301extern const char *isonsap_string(netdissect_options *, const u_char *); 302extern const char *protoid_string(netdissect_options *, const u_char *); 303extern const char *dnname_string(netdissect_options *, u_short); 304extern const char *dnnum_string(netdissect_options *, u_short); 305#endif 306 307/* The printer routines. */ 308 309#include <pcap.h> 310 311typedef u_int (*if_ndo_printer)(struct netdissect_options *ndo, 312 const struct pcap_pkthdr *, const u_char *); 313typedef u_int (*if_printer)(const struct pcap_pkthdr *, const u_char *); 314 315extern if_ndo_printer lookup_ndo_printer(int); 316extern if_printer lookup_printer(int); 317 318extern void eap_print(netdissect_options *,const u_char *, u_int); 319extern int esp_print(netdissect_options *, 320 register const u_char *bp, int len, register const u_char *bp2, 321 int *nhdr, int *padlen); 322extern void arp_print(netdissect_options *,const u_char *, u_int, u_int); 323extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int); 324extern void msnlb_print(netdissect_options *, const u_char *, u_int); 325extern void icmp6_print(netdissect_options *ndo, const u_char *, 326 u_int, const u_char *, int); 327extern void isakmp_print(netdissect_options *,const u_char *, 328 u_int, const u_char *); 329extern void isakmp_rfc3948_print(netdissect_options *,const u_char *, 330 u_int, const u_char *); 331extern void ip_print(netdissect_options *,const u_char *, u_int); 332extern void ip_print_inner(netdissect_options *ndo, 333 const u_char *bp, u_int length, u_int nh, 334 const u_char *bp2); 335extern void rrcp_print(netdissect_options *,const u_char *, u_int); 336 337extern void ether_print(netdissect_options *, 338 const u_char *, u_int, u_int, 339 void (*)(netdissect_options *, const u_char *), 340 const u_char *); 341 342extern u_int ether_if_print(netdissect_options *, 343 const struct pcap_pkthdr *,const u_char *); 344extern u_int netanalyzer_if_print(netdissect_options *, 345 const struct pcap_pkthdr *,const u_char *); 346extern u_int netanalyzer_transparent_if_print(netdissect_options *, 347 const struct pcap_pkthdr *, 348 const u_char *); 349extern u_int pktap_if_print(struct netdissect_options *, 350 const struct pcap_pkthdr *, 351 const u_char *); 352extern u_int pcapng_print(struct netdissect_options *, 353 const struct pcap_pkthdr *, 354 const u_char *); 355 356extern int ethertype_print(netdissect_options *,u_short, const u_char *, 357 u_int, u_int); 358 359/* stuff that has not yet been rototiled */ 360#if 0 361extern void ascii_print(netdissect_options *,u_int); 362extern void hex_and_ascii_print_with_offset(netdissect_options *,const char *, 363 u_int, u_int); 364extern void hex_and_ascii_print(netdissect_options *,const char *, u_int); 365extern void hex_print_with_offset(netdissect_options *,const char *, 366 u_int, u_int); 367extern void hex_print(netdissect_options *,const char *, u_int); 368extern void telnet_print(netdissect_options *,const u_char *, u_int); 369extern int llc_print(netdissect_options *, 370 const u_char *, u_int, u_int, const u_char *, 371 const u_char *, u_short *); 372extern void aarp_print(netdissect_options *,const u_char *, u_int); 373extern void atalk_print(netdissect_options *,const u_char *, u_int); 374extern void atm_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 375extern void bootp_print(netdissect_options *,const u_char *, 376 u_int, u_short, u_short); 377extern void bgp_print(netdissect_options *,const u_char *, int); 378extern void bxxp_print(netdissect_options *,const u_char *, u_int); 379extern void chdlc_if_print(u_char *user, const struct pcap_pkthdr *h, 380 register const u_char *p); 381extern void chdlc_print(netdissect_options *ndo, 382 register const u_char *p, u_int length, u_int caplen); 383extern void cisco_autorp_print(netdissect_options *, 384 const u_char *, u_int); 385extern void cnfp_print(netdissect_options *,const u_char *cp, 386 u_int len, const u_char *bp); 387extern void decnet_print(netdissect_options *,const u_char *, 388 u_int, u_int); 389extern void default_print(netdissect_options *,const u_char *, u_int); 390extern void dvmrp_print(netdissect_options *,const u_char *, u_int); 391extern void egp_print(netdissect_options *,const u_char *, u_int, 392 const u_char *); 393 394extern void arcnet_if_print(u_char*,const struct pcap_pkthdr *,const u_char *); 395extern void token_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 396extern void fddi_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 397 398extern void gre_print(netdissect_options *,const u_char *, u_int); 399extern void icmp_print(netdissect_options *,const u_char *, u_int, 400 const u_char *); 401extern void hsrp_print(netdissect_options *ndo, 402 register const u_char *bp, register u_int len); 403extern void ieee802_11_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 404extern void igmp_print(netdissect_options *, 405 register const u_char *, u_int); 406extern void igrp_print(netdissect_options *,const u_char *, u_int, 407 const u_char *); 408extern int nextproto4_cksum(const struct ip *, const u_int8_t *, u_int, u_int); 409extern void ipN_print(netdissect_options *,const u_char *, u_int); 410extern void ipx_print(netdissect_options *,const u_char *, u_int); 411extern void isoclns_print(netdissect_options *,const u_char *, 412 u_int, u_int, const u_char *, const u_char *); 413extern void krb_print(netdissect_options *,const u_char *, u_int); 414extern void llap_print(netdissect_options *,const u_char *, u_int); 415extern const char *linkaddr_string(netdissect_options *ndo, 416 const u_char *ep, const unsigned int len); 417extern void ltalk_if_print(netdissect_options *ndo, 418 u_char *user, const struct pcap_pkthdr *h, 419 const u_char *p); 420extern void mpls_print(netdissect_options *ndo, 421 const u_char *bp, u_int length); 422extern void msdp_print(netdissect_options *ndo, 423 const unsigned char *sp, u_int length); 424extern void nfsreply_print(netdissect_options *,const u_char *, 425 u_int, const u_char *); 426extern void nfsreq_print(netdissect_options *,const u_char *, 427 u_int, const u_char *); 428extern void ntp_print(netdissect_options *,const u_char *, u_int); 429extern void null_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 430extern void ospf_print(netdissect_options *,const u_char *, 431 u_int, const u_char *); 432extern void pimv1_print(netdissect_options *,const u_char *, u_int); 433extern void mobile_print(netdissect_options *,const u_char *, u_int); 434extern void pim_print(netdissect_options *,const u_char *, u_int, u_int); 435extern void pppoe_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 436extern void pppoe_print(netdissect_options *,const u_char *, u_int); 437extern void ppp_print(netdissect_options *, 438 register const u_char *, u_int); 439 440extern void ppp_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 441extern void ppp_hdlc_if_print(u_char *, 442 const struct pcap_pkthdr *, const u_char *); 443extern void ppp_bsdos_if_print(u_char *, 444 const struct pcap_pkthdr *, const u_char *); 445 446extern int vjc_print(netdissect_options *,register const char *, 447 register u_int, u_short); 448 449extern void raw_if_print(u_char *, 450 const struct pcap_pkthdr *, const u_char *); 451 452extern void rip_print(netdissect_options *,const u_char *, u_int); 453extern void rpki_rtr_print(netdissect_options *,const u_char *, u_int); 454 455extern void sctp_print(netdissect_options *ndo, 456 const u_char *bp, const u_char *bp2, 457 u_int sctpPacketLength); 458 459extern void sl_if_print(u_char *,const struct pcap_pkthdr *, const u_char *); 460 461extern void lane_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 462extern void cip_if_print(u_char *,const struct pcap_pkthdr *,const u_char *); 463extern void sl_bsdos_if_print(u_char *, 464 const struct pcap_pkthdr *, const u_char *); 465extern void sll_if_print(u_char *, 466 const struct pcap_pkthdr *, const u_char *); 467 468extern void snmp_print(netdissect_options *,const u_char *, u_int); 469extern void sunrpcrequest_print(netdissect_options *,const u_char *, 470 u_int, const u_char *); 471extern void tcp_print(netdissect_options *,const u_char *, u_int, 472 const u_char *, int); 473extern void tftp_print(netdissect_options *,const u_char *, u_int); 474extern void timed_print(netdissect_options *,const u_char *, u_int); 475extern void udp_print(netdissect_options *,const u_char *, u_int, 476 const u_char *, int); 477extern void wb_print(netdissect_options *,const void *, u_int); 478extern int ah_print(netdissect_options *,register const u_char *, 479 register const u_char *); 480extern void esp_print_decodesecret(netdissect_options *ndo); 481extern int ipcomp_print(netdissect_options *,register const u_char *, 482 register const u_char *, int *); 483extern void rx_print(netdissect_options *,register const u_char *, 484 int, int, int, u_char *); 485extern void netbeui_print(netdissect_options *,u_short, 486 const u_char *, int); 487extern void ipx_netbios_print(netdissect_options *,const u_char *, u_int); 488extern void nbt_tcp_print(netdissect_options *,const u_char *, int); 489extern void nbt_udp137_print(netdissect_options *, 490 const u_char *data, int); 491extern void nbt_udp138_print(netdissect_options *, 492 const u_char *data, int); 493extern char *smb_errstr(netdissect_options *,int, int); 494extern const char *nt_errstr(netdissect_options *, u_int32_t); 495extern void print_data(netdissect_options *,const unsigned char *, int); 496extern void l2tp_print(netdissect_options *,const u_char *, u_int); 497extern void lcp_print(netdissect_options *,const u_char *, u_int); 498extern void vrrp_print(netdissect_options *,const u_char *bp, 499 u_int len, int ttl); 500extern void carp_print(netdissect_options *,const u_char *bp, 501 u_int len, int ttl); 502extern void cdp_print(netdissect_options *,const u_char *, 503 u_int, u_int, const u_char *, const u_char *); 504extern void stp_print(netdissect_options *,const u_char *p, u_int length); 505extern void radius_print(netdissect_options *,const u_char *, u_int); 506extern void lwres_print(netdissect_options *,const u_char *, u_int); 507extern void pptp_print(netdissect_options *,const u_char *, u_int); 508#endif 509 510extern u_int ipnet_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *); 511extern u_int ppi_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *); 512 513extern u_int ieee802_15_4_if_print(netdissect_options *,const struct pcap_pkthdr *, const u_char *); 514 515#ifdef INET6 516extern void ip6_print(netdissect_options *,const u_char *, u_int); 517#if 0 518extern void ip6_opt_print(netdissect_options *,const u_char *, int); 519extern int nextproto6_cksum(const struct ip6_hdr *, const u_int8_t *, u_int, u_int); 520extern int hbhopt_print(netdissect_options *,const u_char *); 521extern int dstopt_print(netdissect_options *,const u_char *); 522extern int frag6_print(netdissect_options *,const u_char *, 523 const u_char *); 524extern void icmp6_print(netdissect_options *,const u_char *, 525 const u_char *); 526extern void ripng_print(netdissect_options *,const u_char *, int); 527extern int rt6_print(netdissect_options *,const u_char *, const u_char *); 528extern void ospf6_print(netdissect_options *,const u_char *, u_int); 529extern void dhcp6_print(netdissect_options *,const u_char *, 530 u_int, u_int16_t, u_int16_t); 531 532extern void zephyr_print(netdissect_options * ndo, 533 const u_char *cp, int length); 534#endif /* 0 */ 535 536#endif /*INET6*/ 537 538#if 0 539struct cksum_vec { 540 const u_int8_t *ptr; 541 int len; 542}; 543extern u_int16_t in_cksum(const struct cksum_vec *, int); 544extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t); 545#endif 546 547extern void esp_print_decodesecret(netdissect_options *ndo); 548extern int esp_print_decrypt_buffer_by_ikev2(netdissect_options *ndo, 549 int initiator, 550 u_char spii[8], u_char spir[8], 551 u_char *buf, u_char *end); 552 553 554#endif /* netdissect_h */ 555