lsr/lsr_insegment.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_insegment.h"
  12 #include "lsr_xconnect.h"
  13
  14 #include "mpls_assert.h"
  15 #include "mpls_mm_impl.h"
  16 #include "mpls_trace_impl.h"
  17
  18 uint32_t _lsr_insegment_next_index = 1;
  19
  20 lsr_insegment *lsr_insegment_create()
  21 {
  22   lsr_insegment *i = (lsr_insegment *) mpls_malloc(sizeof(lsr_insegment));
  23
  24   if (i) {
  25     memset(i, 0, sizeof(lsr_insegment));
  26     MPLS_REFCNT_INIT(i, 0);
  27     MPLS_LIST_ELEM_INIT(i, _outsegment);
  28     MPLS_LIST_ELEM_INIT(i, _global);
  29     MPLS_LIST_INIT(&i->xconnect_root,lsr_xconnect);
  30     i->index = _lsr_insegment_get_next_index();
  31   }
  32   return i;
  33 }
  34
  35 void lsr_insegment_delete(lsr_insegment * i)
  36 {
  37   // LSR_PRINT(g->user_data,"if delete\n");
  38   MPLS_REFCNT_ASSERT(i, 0);
  39   mpls_free(i);
  40 }
  41
  42 uint32_t _lsr_insegment_get_next_index()
  43 {
  44   uint32_t retval = _lsr_insegment_next_index;
  45
  46   _lsr_insegment_next_index++;
  47   if (retval > _lsr_insegment_next_index) {
  48     _lsr_insegment_next_index = 1;
  49   }
  50   return retval;
  51 }
  52
  53 mpls_return_enum lsr_insegment_add_xconnect(lsr_insegment *in, lsr_xconnect *x) {
  54   if (in && x) {
  55     MPLS_REFCNT_HOLD(x);
  56     MPLS_LIST_ADD_HEAD(&in->xconnect_root, x, _insegment, lsr_xconnect);
  57     _lsr_xconnect_add_insegment(x, in);
  58     return MPLS_SUCCESS;
  59   }
  60   return MPLS_FAILURE;
  61 }
  62
  63 mpls_return_enum lsr_insegment_del_xconnect(lsr_insegment *in, lsr_xconnect *x) {
  64   if (in && x) {
  65     MPLS_LIST_REMOVE(&in->xconnect_root, x, _insegment);
  66     _lsr_xconnect_del_insegment(x);
  67     MPLS_REFCNT_RELEASE(x, lsr_xconnect_delete);
  68     return MPLS_SUCCESS;
  69   }
  70   return MPLS_FAILURE;
  71 }