imep_rt.cc

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/* Ported from CMU/Monarch's code*/

/* 
   imep_rt.cc
   $Id

   Routing Protocol (or more generally, ULP) Specific Functions
   */

#include <imep/imep.h>
#include <tora/tora_packet.h>
#include <packet.h>

// ======================================================================
// computes the length of a TORA header, copies the header to "dst"
// and returns the length of the header in "length".

int
imepAgent::toraHeaderLength(struct hdr_tora *t)
{
        switch(t->th_type) {
        case TORATYPE_QRY:
                return sizeof(struct hdr_tora_qry);
                break;
        case TORATYPE_UPD:
                return sizeof(struct hdr_tora_upd);
                break;
        case TORATYPE_CLR:
                return sizeof(struct hdr_tora_clr);
                break;
        default:
                abort();
        }
        return 0; /* Make msvc happy */
}

void
imepAgent::toraExtractHeader(Packet *p, char* dst)
{
  struct hdr_tora *t = HDR_TORA(p);
  int length = toraHeaderLength(t);
  bcopy((char*) t, dst, length);

  switch(t->th_type) {
  case TORATYPE_QRY:
    stats.qry_objs_created++;
    break;
  case TORATYPE_UPD:
    stats.upd_objs_created++;
    break;
  case TORATYPE_CLR:
    stats.clr_objs_created++;
    break;
  default:
    abort();
  }
}

void
imepAgent::toraCreateHeader(Packet *p, char *src, int length)
{
  struct hdr_cmn *ch = HDR_CMN(p);
  struct hdr_tora *t = HDR_TORA(p);

  ch->size() = IP_HDR_LEN + length;
  ch->ptype() = PT_TORA;

  bcopy(src, (char*) t, length);

  switch(t->th_type) {
  case TORATYPE_QRY:
    stats.qry_objs_recvd++;
    break;
  case TORATYPE_UPD:
    stats.upd_objs_recvd++;
    break;
  case TORATYPE_CLR:
    stats.clr_objs_recvd++;
    break;
  default:
    abort();
  }
}

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