dissector_eth.c

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * Copyright 2009, 2010 Daniel Borkmann.
   4  * Subject to the GPL, version 2.
   5  */
   6
   7 #include <stdint.h>
   8
   9 #include "hash.h"
  10 #include "proto.h"
  11 #include "protos.h"
  12 #include "dissector.h"
  13 #include "dissector_eth.h"
  14 #include "lookup.h"
  15 #include "xmalloc.h"
  16
  17 struct hash_table eth_lay2;
  18 struct hash_table eth_lay3;
  19
  20 static inline void dissector_init_entry(int type)
  21 {
  22         dissector_set_print_type(&ethernet_ops, type);
  23 }
  24
  25 static inline void dissector_init_exit(int type)
  26 {
  27         dissector_set_print_type(&none_ops, type);
  28 }
  29
  30 static void dissector_init_layer_2(int type)
  31 {
  32         init_hash(&eth_lay2);
  33         INSERT_HASH_PROTOS(arp_ops, eth_lay2);
  34         INSERT_HASH_PROTOS(lldp_ops, eth_lay2);
  35         INSERT_HASH_PROTOS(vlan_ops, eth_lay2);
  36         INSERT_HASH_PROTOS(ipv4_ops, eth_lay2);
  37         INSERT_HASH_PROTOS(ipv6_ops, eth_lay2);
  38         INSERT_HASH_PROTOS(QinQ_ops, eth_lay2);
  39         INSERT_HASH_PROTOS(mpls_uc_ops, eth_lay2);
  40         for_each_hash_int(&eth_lay2, dissector_set_print_type, type);
  41 }
  42
  43 static void dissector_init_layer_3(int type)
  44 {
  45         init_hash(&eth_lay3);
  46         INSERT_HASH_PROTOS(icmpv4_ops, eth_lay3);
  47         INSERT_HASH_PROTOS(icmpv6_ops, eth_lay3);
  48         INSERT_HASH_PROTOS(igmp_ops, eth_lay3);
  49         INSERT_HASH_PROTOS(ip_auth_ops, eth_lay3);
  50         INSERT_HASH_PROTOS(ip_esp_ops, eth_lay3);
  51         INSERT_HASH_PROTOS(ipv6_dest_opts_ops, eth_lay3);
  52         INSERT_HASH_PROTOS(ipv6_fragm_ops, eth_lay3);
  53         INSERT_HASH_PROTOS(ipv6_hop_by_hop_ops, eth_lay3);
  54         INSERT_HASH_PROTOS(ipv6_in_ipv4_ops, eth_lay3);
  55         INSERT_HASH_PROTOS(ipv6_mobility_ops, eth_lay3);
  56         INSERT_HASH_PROTOS(ipv6_no_next_header_ops, eth_lay3);
  57         INSERT_HASH_PROTOS(ipv6_routing_ops, eth_lay3);
  58         INSERT_HASH_PROTOS(tcp_ops, eth_lay3);
  59         INSERT_HASH_PROTOS(udp_ops, eth_lay3);
  60         INSERT_HASH_PROTOS(dccp_ops, eth_lay3);
  61         for_each_hash_int(&eth_lay3, dissector_set_print_type, type);
  62 }
  63
  64 void dissector_init_ethernet(int fnttype)
  65 {
  66         dissector_init_entry(fnttype);
  67         dissector_init_layer_2(fnttype);
  68         dissector_init_layer_3(fnttype);
  69         dissector_init_exit(fnttype);
  70
  71         lookup_init(LT_PORTS_UDP);
  72         lookup_init(LT_PORTS_TCP);
  73         lookup_init(LT_ETHERTYPES);
  74         lookup_init(LT_OUI);
  75 }
  76
  77 void dissector_cleanup_ethernet(void)
  78 {
  79         free_hash(&eth_lay2);
  80         free_hash(&eth_lay3);
  81
  82         lookup_cleanup(LT_OUI);
  83         lookup_cleanup(LT_ETHERTYPES);
  84         lookup_cleanup(LT_PORTS_TCP);
  85         lookup_cleanup(LT_PORTS_UDP);
  86 }