lsr/lsr_ftn.c

   1
   2 /*
   3  *  Copyright (C) James R. Leu 2002
   4  *  jleu@mindspring.com
   5  *
   6  *  This software is covered under the LGPL, for more
   7  *  info check out http://www.gnu.org/copyleft/lgpl.html
   8  */
   9
  10 #include "lsr_struct.h"
  11 #include "lsr_ftn.h"
  12 #include "lsr_outsegment.h"
  13
  14 #include "mpls_assert.h"
  15 #include "mpls_mm_impl.h"
  16 #include "mpls_trace_impl.h"
  17
  18 uint32_t _lsr_ftn_next_index = 1;
  19
  20 lsr_ftn *lsr_ftn_create()
  21 {
  22   lsr_ftn *i = (lsr_ftn *) mpls_malloc(sizeof(lsr_ftn));
  23
  24   if (i) {
  25     memset(i, 0, sizeof(lsr_ftn));
  26     MPLS_REFCNT_INIT(i, 0);
  27     MPLS_LIST_ELEM_INIT(i, _outsegment);
  28     MPLS_LIST_ELEM_INIT(i, _global);
  29     i->index = _lsr_ftn_get_next_index();
  30   }
  31   return i;
  32 }
  33
  34 void lsr_ftn_delete(lsr_ftn * i)
  35 {
  36   // LSR_PRINT(g->user_data,"if delete\n");
  37   MPLS_REFCNT_ASSERT(i, 0);
  38   mpls_free(i);
  39 }
  40
  41 uint32_t _lsr_ftn_get_next_index()
  42 {
  43   uint32_t retval = _lsr_ftn_next_index;
  44
  45   _lsr_ftn_next_index++;
  46   if (retval > _lsr_ftn_next_index) {
  47     _lsr_ftn_next_index = 1;
  48   }
  49   return retval;
  50 }
  51
  52 mpls_return_enum _lsr_ftn_add_outsegment(lsr_ftn * x, lsr_outsegment * o)
  53 {
  54   if (x && o) {
  55     MPLS_REFCNT_HOLD(o);
  56     x->outsegment = o;
  57     return MPLS_SUCCESS;
  58   }
  59   return MPLS_FAILURE;
  60 }
  61
  62 mpls_return_enum _lsr_ftn_del_outsegment(lsr_ftn * x)
  63 {
  64   if (x && x->outsegment) {
  65     MPLS_REFCNT_RELEASE(x->outsegment, lsr_outsegment_delete);
  66     x->outsegment = NULL;
  67     return MPLS_SUCCESS;
  68   }
  69   return MPLS_FAILURE;
  70 }