C compilers can, and some do, optimize away pointer underflow checks.

[tcpdump] / interface.h

diff --git a/interface.h b/interface.h
index e4534625b47b59373be7b3f11149c0e2cb31e1b8..be027ed34c99d328cf6b4b9f21689a94ab68be6f 100644 (file)
--- a/interface.h
+++ b/interface.h
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
+ * Copyright (c) 1988-2002

  *     The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  *     The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without


@@ -18,41 +18,58 @@
  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *

- * @(#) $Header: /tcpdump/master/tcpdump/interface.h,v 1.108 1999-10-17 22:18:00 mcr Exp $ (LBL)
+ * @(#) $Header: /tcpdump/master/tcpdump/interface.h,v 1.285 2008-08-16 11:36:20 hannes Exp $ (LBL)

  */
 
 #ifndef tcpdump_interface_h
 #define tcpdump_interface_h
 
  */
 
 #ifndef tcpdump_interface_h
 #define tcpdump_interface_h
 

-#include "gnuc.h"

 #ifdef HAVE_OS_PROTO_H
 #include "os-proto.h"
 #endif
 
 #ifdef HAVE_OS_PROTO_H
 #include "os-proto.h"
 #endif
 

-struct tok {
-       int v;                  /* value */
-       char *s;                /* string */
-};
-
-extern int aflag;              /* translate network and broadcast addresses */
-extern int dflag;              /* print filter code */
-extern int eflag;              /* print ethernet header */
-extern int fflag;              /* don't translate "foreign" IP address */
-extern int nflag;              /* leave addresses as numbers */
-extern int Nflag;              /* remove domains from printed host names */
-extern int qflag;              /* quick (shorter) output */
-extern int Sflag;              /* print raw TCP sequence numbers */
-extern int tflag;              /* print packet arrival time */
-extern int vflag;              /* verbose */
-extern int xflag;              /* print packet in hex */
-
-extern int packettype;         /* as specified by -T */
+/* snprintf et al */
+
+#include <stdarg.h>
+
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
+#if !defined(HAVE_SNPRINTF)
+int snprintf(char *, size_t, const char *, ...)
+     __attribute__((format(printf, 3, 4)));
+#endif
+
+#if !defined(HAVE_VSNPRINTF)
+int vsnprintf(char *, size_t, const char *, va_list)
+     __attribute__((format(printf, 3, 0)));
+#endif
+
+#ifndef HAVE_STRLCAT
+extern size_t strlcat(char *, const char *, size_t);
+#endif
+#ifndef HAVE_STRLCPY
+extern size_t strlcpy(char *, const char *, size_t);
+#endif
+
+#ifndef HAVE_STRDUP
+extern char *strdup(const char *);
+#endif
+
+#ifndef HAVE_STRSEP
+extern char *strsep(char **, const char *);
+#endif
+

 #define PT_VAT         1       /* Visual Audio Tool */
 #define PT_WB          2       /* distributed White Board */
 #define PT_RPC         3       /* Remote Procedure Call */
 #define PT_RTP         4       /* Real-Time Applications protocol */
 #define PT_RTCP                5       /* Real-Time Applications control protocol */
 #define PT_SNMP                6       /* Simple Network Management Protocol */
 #define PT_VAT         1       /* Visual Audio Tool */
 #define PT_WB          2       /* distributed White Board */
 #define PT_RPC         3       /* Remote Procedure Call */
 #define PT_RTP         4       /* Real-Time Applications protocol */
 #define PT_RTCP                5       /* Real-Time Applications control protocol */
 #define PT_SNMP                6       /* Simple Network Management Protocol */

+#define PT_CNFP                7       /* Cisco NetFlow protocol */
+#define PT_TFTP                8       /* trivial file transfer protocol */
+#define PT_AODV                9       /* Ad-hoc On-demand Distance Vector Protocol */

 
 #ifndef min
 #define min(a,b) ((a)>(b)?(b):(a))
 
 #ifndef min
 #define min(a,b) ((a)>(b)?(b):(a))


@@ -61,43 +78,8 @@ extern int packettype;               /* as specified by -T */
 #define max(a,b) ((b)>(a)?(b):(a))
 #endif
 
 #define max(a,b) ((b)>(a)?(b):(a))
 #endif
 

-/*
- * The default snapshot length.  This value allows most printers to print
- * useful information while keeping the amount of unwanted data down.
- * In particular, it allows for an ethernet header, tcp/ip header, and
- * 14 bytes of data (assuming no ip options).
- */
-#define DEFAULT_SNAPLEN 68
-
-#ifndef BIG_ENDIAN
-#define BIG_ENDIAN 4321
-#define LITTLE_ENDIAN 1234
-#endif
-
-#ifdef ETHER_HEADER_HAS_EA
-#define ESRC(ep) ((ep)->ether_shost.ether_addr_octet)
-#define EDST(ep) ((ep)->ether_dhost.ether_addr_octet)
-#else

 #define ESRC(ep) ((ep)->ether_shost)
 #define EDST(ep) ((ep)->ether_dhost)
 #define ESRC(ep) ((ep)->ether_shost)
 #define EDST(ep) ((ep)->ether_dhost)

-#endif
-
-#ifdef ETHER_ARP_HAS_X
-#define SHA(ap) ((ap)->arp_xsha)
-#define THA(ap) ((ap)->arp_xtha)
-#define SPA(ap) ((ap)->arp_xspa)
-#define TPA(ap) ((ap)->arp_xtpa)
-#else
-#ifdef ETHER_ARP_HAS_EA
-#define SHA(ap) ((ap)->arp_sha.ether_addr_octet)
-#define THA(ap) ((ap)->arp_tha.ether_addr_octet)
-#else
-#define SHA(ap) ((ap)->arp_sha)
-#define THA(ap) ((ap)->arp_tha)
-#endif
-#define SPA(ap) ((ap)->arp_spa)
-#define TPA(ap) ((ap)->arp_tpa)
-#endif

 
 #ifndef NTOHL
 #define NTOHL(x)       (x) = ntohl(x)
 
 #ifndef NTOHL
 #define NTOHL(x)       (x) = ntohl(x)


@@ -107,17 +89,24 @@ extern int packettype;             /* as specified by -T */
 #endif
 #endif
 
 #endif
 #endif
 

+#ifndef MIN
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#endif
+

 extern char *program_name;     /* used to generate self-identifying messages */
 
 extern int32_t thiszone;       /* seconds offset from gmt to local time */
 
 extern char *program_name;     /* used to generate self-identifying messages */
 
 extern int32_t thiszone;       /* seconds offset from gmt to local time */
 

-extern int snaplen;
-/* global pointers to beginning and end of current packet (during printing) */
-extern const u_char *packetp;
-extern const u_char *snapend;
-
-/* True if  "l" bytes of "var" were captured */
-#define TTEST2(var, l) ((u_char *)&(var) <= snapend - (l))
+/*
+ * True if  "l" bytes of "var" were captured.
+ *
+ * The "snapend - (l) <= snapend" checks to make sure "l" isn't so large
+ * that "snapend - (l)" underflows.
+ *
+ * The check is for <= rather than < because "l" might be 0.
+ */
+#define TTEST2(var, l) (snapend - (l) <= snapend && \
+                       (const u_char *)&(var) <= snapend - (l))

 
 /* True if "var" was captured */
 #define TTEST(var) TTEST2(var, sizeof(var))
 
 /* True if "var" was captured */
 #define TTEST(var) TTEST2(var, sizeof(var))


@@ -128,82 +117,271 @@ extern const u_char *snapend;
 /* Bail if "var" was not captured */
 #define TCHECK(var) TCHECK2(var, sizeof(var))
 
 /* Bail if "var" was not captured */
 #define TCHECK(var) TCHECK2(var, sizeof(var))
 

-#ifdef __STDC__
-struct timeval;
-#endif
-

 extern void ts_print(const struct timeval *);
 extern void ts_print(const struct timeval *);

+extern void relts_print(int);

 
 extern int fn_print(const u_char *, const u_char *);
 extern int fn_printn(const u_char *, u_int, const u_char *);
 
 extern int fn_print(const u_char *, const u_char *);
 extern int fn_printn(const u_char *, u_int, const u_char *);

-extern const char *tok2str(const struct tok *, const char *, int);
-extern char *dnaddr_string(u_short);
+extern int fn_printzp(const u_char *, u_int, const u_char *);
+extern int mask2plen(u_int32_t);
+extern const char *tok2strary_internal(const char **, int, const char *, int);
+#define        tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i)

 
 

-extern void wrapup(int);
+extern const char *dnaddr_string(u_short);

 
 

-#if __STDC__
-extern __dead void error(const char *, ...)
-    __attribute__((volatile, format (printf, 1, 2)));
+extern void error(const char *, ...)
+    __attribute__((noreturn, format (printf, 1, 2)));

 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));
 extern void warning(const char *, ...) __attribute__ ((format (printf, 1, 2)));

-#endif

 
 extern char *read_infile(char *);
 extern char *copy_argv(char **);
 
 
 extern char *read_infile(char *);
 extern char *copy_argv(char **);
 

-extern char *isonsap_string(const u_char *);
-extern char *llcsap_string(u_char);
-extern char *protoid_string(const u_char *);
-extern char *dnname_string(u_short);
-extern char *dnnum_string(u_short);
+extern void safeputchar(int);
+extern void safeputs(const char *, int);
+
+extern const char *isonsap_string(const u_char *, register u_int);
+extern const char *protoid_string(const u_char *);
+extern const char *ipxsap_string(u_short);
+extern const char *dnname_string(u_short);
+extern const char *dnnum_string(u_short);
+
+/* checksum routines */
+extern void init_checksum(void);
+extern u_int16_t verify_crc10_cksum(u_int16_t, const u_char *, int);
+extern u_int16_t create_osi_cksum(const u_int8_t *, int, int);

 
 /* The printer routines. */
 
 
 /* The printer routines. */
 

-#ifdef __STDC__
-struct pcap_pkthdr;
-#endif
+#include <pcap.h>

 
 

-extern int ether_encap_print(u_short, const u_char *, u_int, u_int);
+extern int print_unknown_data(const u_char *, const char *,int);
+extern void ascii_print(const u_char *, u_int);
+extern void hex_and_ascii_print_with_offset(const char *, const u_char *,
+       u_int, u_int);
+extern void hex_and_ascii_print(const char *, const u_char *, u_int);
+extern void hex_print_with_offset(const char *, const u_char *, u_int, u_int);
+extern void hex_print(const char *, const u_char *, u_int);
+extern void telnet_print(const u_char *, u_int);
+extern int ethertype_print(u_short, const u_char *, u_int, u_int);

 extern int llc_print(const u_char *, u_int, u_int, const u_char *,
 extern int llc_print(const u_char *, u_int, u_int, const u_char *,

-       const u_char *);
+       const u_char *, u_short *);
+extern int snap_print(const u_char *, u_int, u_int, u_int);

 extern void aarp_print(const u_char *, u_int);
 extern void aarp_print(const u_char *, u_int);

-extern void arp_print(const u_char *, u_int, u_int);
+extern void aodv_print(const u_char *, u_int, int);

 extern void atalk_print(const u_char *, u_int);
 extern void atalk_print(const u_char *, u_int);

-extern void atm_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
-extern void bootp_print(const u_char *, u_int, u_short, u_short);
+extern void atm_print(u_int, u_int, u_int, const u_char *, u_int, u_int);
+extern u_int atm_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int sunatm_if_print(const struct pcap_pkthdr *, const u_char *);
+extern int oam_print(const u_char *, u_int, u_int);
+extern void bootp_print(const u_char *, u_int);
+extern void bgp_print(const u_char *, int);
+extern void beep_print(const u_char *, u_int);
+extern void cnfp_print(const u_char *, const u_char *);

 extern void decnet_print(const u_char *, u_int, u_int);
 extern void default_print(const u_char *, u_int);
 extern void decnet_print(const u_char *, u_int, u_int);
 extern void default_print(const u_char *, u_int);

-extern void default_print_unaligned(const u_char *, u_int);

 extern void dvmrp_print(const u_char *, u_int);
 extern void dvmrp_print(const u_char *, u_int);

-extern void egp_print(const u_char *, u_int, const u_char *);
-extern void ether_if_print(u_char *, const struct pcap_pkthdr *,
+extern void egp_print(const u_char *, u_int);
+extern u_int enc_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int pflog_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int arcnet_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int arcnet_linux_if_print(const struct pcap_pkthdr *, const u_char *);
+extern void ether_print(const u_char *, u_int, u_int,
+    void (*)(const u_char *), const u_char *);
+extern u_int ether_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int token_print(const u_char *, u_int, u_int);
+extern u_int token_if_print(const struct pcap_pkthdr *, const u_char *);
+extern void fddi_print(const u_char *, u_int, u_int);
+extern u_int fddi_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int fr_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int mfr_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int fr_print(register const u_char *, u_int);
+extern u_int mfr_print(register const u_char *, u_int);
+extern char *q922_string(const u_char *);
+extern u_int ieee802_11_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int ieee802_11_radio_if_print(const struct pcap_pkthdr *,
+       const u_char *);
+extern u_int ap1394_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int ieee802_11_radio_avs_if_print(const struct pcap_pkthdr *,

        const u_char *);
        const u_char *);

-extern void fddi_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);

 extern void gre_print(const u_char *, u_int);
 extern void gre_print(const u_char *, u_int);

-extern void icmp_print(const u_char *, const u_char *);
+extern void icmp_print(const u_char *, u_int, const u_char *, int);
+extern void igmp_print(const u_char *, u_int);

 extern void igrp_print(const u_char *, u_int, const u_char *);
 extern void igrp_print(const u_char *, u_int, const u_char *);

-extern void ip_print(const u_char *, u_int);
+extern void ipN_print(const u_char *, u_int);
+extern u_int ipfc_if_print(const struct pcap_pkthdr *, const u_char *);

 extern void ipx_print(const u_char *, u_int);
 extern void ipx_print(const u_char *, u_int);

-extern void isoclns_print(const u_char *, u_int, u_int, const u_char *,
-       const u_char *);
-extern void krb_print(const u_char *, u_int);
+extern void isoclns_print(const u_char *, u_int, u_int);
+extern void krb_print(const u_char *);
+extern u_int llap_print(const u_char *, u_int);
+extern u_int ltalk_if_print(const struct pcap_pkthdr *, const u_char *);
+extern void msdp_print(const unsigned char *, u_int);

 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 extern void nfsreq_print(const u_char *, u_int, const u_char *);
 extern void nfsreply_print(const u_char *, u_int, const u_char *);
 extern void nfsreq_print(const u_char *, u_int, const u_char *);

-extern void ns_print(const u_char *, u_int);
+extern void ns_print(const u_char *, u_int, int);

 extern void ntp_print(const u_char *, u_int);
 extern void ntp_print(const u_char *, u_int);

-extern void null_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
+extern u_int null_if_print(const struct pcap_pkthdr *, const u_char *);

 extern void ospf_print(const u_char *, u_int, const u_char *);
 extern void ospf_print(const u_char *, u_int, const u_char *);

-extern void pim_print(const u_char *, u_int);
-extern void ppp_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
-extern void ppp_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
-       const u_char *);
-extern void raw_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
+extern void olsr_print (const u_char *, u_int, int);
+extern void pimv1_print(const u_char *, u_int);
+extern void cisco_autorp_print(const u_char *, u_int);
+extern void rsvp_print(const u_char *, u_int);
+extern void ldp_print(const u_char *, u_int);
+extern void lldp_print(const u_char *, u_int);
+extern void lmp_print(const u_char *, u_int);
+extern void lspping_print(const u_char *, u_int);
+extern void lwapp_control_print(const u_char *, u_int, int);
+extern void lwapp_data_print(const u_char *, u_int);
+extern void eigrp_print(const u_char *, u_int);
+extern void mobile_print(const u_char *, u_int);
+extern void pim_print(const u_char *, u_int, u_int);
+extern u_int pppoe_print(const u_char *, u_int);
+extern u_int ppp_print(register const u_char *, u_int);
+extern u_int ppp_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int ppp_hdlc_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int ppp_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int pppoe_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int prism_if_print(const struct pcap_pkthdr *, const u_char *);
+extern void q933_print(const u_char *, u_int);
+extern int vjc_print(register const char *, u_short);
+extern void vqp_print(register const u_char *, register u_int);
+extern u_int raw_if_print(const struct pcap_pkthdr *, const u_char *);

 extern void rip_print(const u_char *, u_int);
 extern void rip_print(const u_char *, u_int);

-extern void sl_if_print(u_char *, const struct pcap_pkthdr *, const u_char *);
-extern void sl_bsdos_if_print(u_char *, const struct pcap_pkthdr *,
-    const u_char *);
+extern u_int sl_if_print(const struct pcap_pkthdr *, const u_char *);
+extern void lane_print(const u_char *, u_int, u_int);
+extern u_int lane_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int cip_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int sl_bsdos_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int chdlc_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int chdlc_print(register const u_char *, u_int);
+extern u_int juniper_atm1_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_atm2_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_mfr_print(const struct pcap_pkthdr *, register const u_char *);
+extern u_int juniper_mlfr_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_mlppp_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_pppoe_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_pppoe_atm_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_ggsn_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_es_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_monitor_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_services_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_ether_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_ppp_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_frelay_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int juniper_chdlc_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int sll_if_print(const struct pcap_pkthdr *, const u_char *);

 extern void snmp_print(const u_char *, u_int);
 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);
 extern void snmp_print(const u_char *, u_int);
 extern void sunrpcrequest_print(const u_char *, u_int, const u_char *);

-extern void tcp_print(const u_char *, u_int, const u_char *);
+extern u_int symantec_if_print(const struct pcap_pkthdr *, const u_char *);
+extern void tcp_print(const u_char *, u_int, const u_char *, int);

 extern void tftp_print(const u_char *, u_int);
 extern void tftp_print(const u_char *, u_int);

-extern void udp_print(const u_char *, u_int, const u_char *);
+extern void timed_print(const u_char *);
+extern void udld_print(const u_char *, u_int);
+extern void udp_print(const u_char *, u_int, const u_char *, int);
+extern void vtp_print(const u_char *, u_int);

 extern void wb_print(const void *, u_int);
 extern void wb_print(const void *, u_int);

+extern int ah_print(register const u_char *);
+extern int ipcomp_print(register const u_char *, int *);
+extern void rx_print(register const u_char *, int, int, int, u_char *);
+extern void netbeui_print(u_short, const u_char *, int);
+extern void ipx_netbios_print(const u_char *, u_int);
+extern void nbt_tcp_print(const u_char *, int);
+extern void nbt_udp137_print(const u_char *, int);
+extern void nbt_udp138_print(const u_char *, int);
+extern void smb_tcp_print(const u_char *, int);
+extern char *smb_errstr(int, int);
+extern const char *nt_errstr(u_int32_t);
+extern void print_data(const unsigned char *, int);
+extern void l2tp_print(const u_char *, u_int);
+extern void vrrp_print(const u_char *, u_int, int);
+extern void slow_print(const u_char *, u_int);
+extern void sflow_print(const u_char *, u_int);
+extern void mpcp_print(const u_char *, u_int);
+extern void cfm_print(const u_char *, u_int);
+extern void pgm_print(const u_char *, u_int, const u_char *);
+extern void cdp_print(const u_char *, u_int, u_int);
+extern void dtp_print(const u_char *, u_int);
+extern void stp_print(const u_char *, u_int);
+extern void radius_print(const u_char *, u_int);
+extern void lwres_print(const u_char *, u_int);
+extern void pptp_print(const u_char *);
+extern void dccp_print(const u_char *, const u_char *, u_int);
+extern void sctp_print(const u_char *, const u_char *, u_int);
+extern void forces_print(const u_char *, u_int);
+extern void mpls_print(const u_char *, u_int);
+extern void mpls_lsp_ping_print(const u_char *, u_int);
+extern void zephyr_print(const u_char *, int);
+extern void hsrp_print(const u_char *, u_int);
+extern void bfd_print(const u_char *, u_int, u_int);
+extern void sip_print(const u_char *, u_int);
+extern void syslog_print(const u_char *, u_int);
+extern u_int bt_if_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int usb_linux_48_byte_print(const struct pcap_pkthdr *, const u_char *);
+extern u_int usb_linux_64_byte_print(const struct pcap_pkthdr *, const u_char *);
+
+#ifdef INET6
+extern void ip6_print(const u_char *, u_int);
+extern void ip6_opt_print(const u_char *, int);
+extern int hbhopt_print(const u_char *);
+extern int dstopt_print(const u_char *);
+extern int frag6_print(const u_char *, const u_char *);
+extern int mobility_print(const u_char *, const u_char *);
+extern void ripng_print(const u_char *, unsigned int);
+extern int rt6_print(const u_char *, const u_char *);
+extern void ospf6_print(const u_char *, u_int);
+extern void dhcp6_print(const u_char *, u_int);
+extern int mask62plen(const u_char *);
+#endif /*INET6*/
+extern u_short in_cksum(const u_short *, register u_int, int);
+extern u_int16_t in_cksum_shouldbe(u_int16_t, u_int16_t);
+
+#ifndef HAVE_BPF_DUMP
+struct bpf_program;
+
+extern void bpf_dump(const struct bpf_program *, int);
+
+#endif
+
+#include "netdissect.h"
+
+/* forward compatibility */
+
+#ifndef NETDISSECT_REWORKED
+extern netdissect_options *gndo;
+
+#define bflag gndo->ndo_bflag 
+#define eflag gndo->ndo_eflag 
+#define fflag gndo->ndo_fflag 
+#define jflag gndo->ndo_jflag
+#define Kflag gndo->ndo_Kflag 
+#define nflag gndo->ndo_nflag 
+#define Nflag gndo->ndo_Nflag 
+#define Oflag gndo->ndo_Oflag 
+#define pflag gndo->ndo_pflag 
+#define qflag gndo->ndo_qflag 
+#define Rflag gndo->ndo_Rflag 
+#define sflag gndo->ndo_sflag 
+#define Sflag gndo->ndo_Sflag 
+#define tflag gndo->ndo_tflag 
+#define Uflag gndo->ndo_Uflag 
+#define uflag gndo->ndo_uflag 
+#define vflag gndo->ndo_vflag 
+#define xflag gndo->ndo_xflag 
+#define Xflag gndo->ndo_Xflag 
+#define Cflag gndo->ndo_Cflag 
+#define Gflag gndo->ndo_Gflag 
+#define Aflag gndo->ndo_Aflag 
+#define Bflag gndo->ndo_Bflag 
+#define Iflag gndo->ndo_Iflag 
+#define suppress_default_print gndo->ndo_suppress_default_print
+#define packettype gndo->ndo_packettype
+#define sigsecret gndo->ndo_sigsecret
+#define Wflag gndo->ndo_Wflag
+#define WflagChars gndo->ndo_WflagChars
+#define Cflag_count gndo->ndo_Cflag_count
+#define Gflag_count gndo->ndo_Gflag_count
+#define Gflag_time gndo->ndo_Gflag_time 
+#define hflag gndo->ndo_hflag
+#define snaplen     gndo->ndo_snaplen
+#define snapend     gndo->ndo_snapend
+
+#endif