proto_ipv6_no_nxt_hdr.c

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * Copyright 2012 Markus Amend <markus@netsniff-ng.org>, Deutsche Flugsicherung GmbH
   4  * Subject to the GPL, version 2.
   5  *
   6  * IPv6 No Next Header described in RFC2460
   7  */
   8
   9 #include <stdio.h>
  10 #include <stdint.h>
  11 #include <netinet/in.h>    /* for ntohs() */
  12
  13 #include "proto.h"
  14 #include "protos.h"
  15 #include "dissector_eth.h"
  16 #include "built_in.h"
  17
  18 static void no_next_header(struct pkt_buff *pkt)
  19 {
  20         /*
  21          * The value 59 in the Next Header field of an IPv6 header or any
  22          * extension header indicates that there is nothing following that
  23          * header.  If the Payload Length field of the IPv6 header indicates the
  24          * presence of octets past the end of a header whose Next Header field
  25          * contains 59, those octets must be ignored, and passed on unchanged if
  26          * the packet is forwarded.
  27          */
  28         tprintf(" [ No Next Header");
  29         tprintf(" ]\n");
  30 }
  31
  32 static void no_next_header_less(struct pkt_buff *pkt)
  33 {
  34         tprintf(" No Next Header");
  35 }
  36
  37 struct protocol ipv6_no_next_header_ops = {
  38         .key = 0x3B,
  39         .print_full = no_next_header,
  40         .print_less = no_next_header_less,
  41 };