trafgen_l2.c

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * Subject to the GPL, version 2.
   4  */
   5
   6 #include "built_in.h"
   7 #include "trafgen_l2.h"
   8 #include "trafgen_proto.h"
   9
  10 struct proto_field eth_fields[] = {
  11         { .id = ETH_DST_ADDR, .len = 6, },
  12         { .id = ETH_SRC_ADDR, .len = 6, .offset = 6 },
  13         { .id = ETH_PROTO_ID, .len = 2, .offset = 12 },
  14 };
  15
  16 static void eth_header_init(struct proto_hdr *hdr)
  17 {
  18         proto_header_fields_add(hdr, eth_fields, array_size(eth_fields));
  19
  20         proto_field_set_default_dev_mac(hdr, ETH_SRC_ADDR);
  21 }
  22
  23 static struct proto_hdr eth_hdr = {
  24         .id             = PROTO_ETH,
  25         .layer          = PROTO_L2,
  26         .header_init    = eth_header_init,
  27 };
  28
  29 void protos_l2_init(void)
  30 {
  31         proto_header_register(&eth_hdr);
  32 }