X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/49b23c5a9b0198bb382dcf43c458d46fcf2fa809..0d52da1a967932f479912f8049b35c0112a7c708:/print-frag6.c diff --git a/print-frag6.c b/print-frag6.c index db4a98ed..f1728f0c 100644 --- a/print-frag6.c +++ b/print-frag6.c @@ -27,36 +27,37 @@ #include -#include "ip6.h" #include "netdissect.h" #include "extract.h" +#include "ip6.h" + int -frag6_print(netdissect_options *ndo, register const u_char *bp, register const u_char *bp2) +frag6_print(netdissect_options *ndo, const u_char *bp, const u_char *bp2) { - register const struct ip6_frag *dp; - register const struct ip6_hdr *ip6; + const struct ip6_frag *dp; + const struct ip6_hdr *ip6; dp = (const struct ip6_frag *)bp; ip6 = (const struct ip6_hdr *)bp2; - ND_TCHECK(dp->ip6f_offlg); + ND_TCHECK(*dp); if (ndo->ndo_vflag) { ND_PRINT((ndo, "frag (0x%08x:%d|%ld)", - EXTRACT_32BITS(&dp->ip6f_ident), - EXTRACT_16BITS(&dp->ip6f_offlg) & IP6F_OFF_MASK, - sizeof(struct ip6_hdr) + EXTRACT_16BITS(&ip6->ip6_plen) - - (long)(bp - bp2) - sizeof(struct ip6_frag))); + EXTRACT_BE_U_4(&dp->ip6f_ident), + EXTRACT_BE_U_2(&dp->ip6f_offlg) & IP6F_OFF_MASK, + sizeof(struct ip6_hdr) + EXTRACT_BE_U_2(&ip6->ip6_plen) - + (long)(bp - bp2) - sizeof(struct ip6_frag))); } else { ND_PRINT((ndo, "frag (%d|%ld)", - EXTRACT_16BITS(&dp->ip6f_offlg) & IP6F_OFF_MASK, - sizeof(struct ip6_hdr) + EXTRACT_16BITS(&ip6->ip6_plen) - - (long)(bp - bp2) - sizeof(struct ip6_frag))); + EXTRACT_BE_U_2(&dp->ip6f_offlg) & IP6F_OFF_MASK, + sizeof(struct ip6_hdr) + EXTRACT_BE_U_2(&ip6->ip6_plen) - + (long)(bp - bp2) - sizeof(struct ip6_frag))); } /* it is meaningless to decode non-first fragment */ - if ((EXTRACT_16BITS(&dp->ip6f_offlg) & IP6F_OFF_MASK) != 0) + if ((EXTRACT_BE_U_2(&dp->ip6f_offlg) & IP6F_OFF_MASK) != 0) return -1; else {