lsr/lsr_if.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_if.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_if_next_index = 1;
  19
  20 lsr_if *lsr_if_create()
  21 {
  22   lsr_if *i = (lsr_if *) mpls_malloc(sizeof(lsr_if));
  23
  24   if (i) {
  25     memset(i, 0, sizeof(lsr_if));
  26     MPLS_REFCNT_INIT(i, 0);
  27     MPLS_LIST_ELEM_INIT(i, _global);
  28     MPLS_LIST_INIT(&i->outsegment_root,lsr_outsegment);
  29     i->index = _lsr_if_get_next_index();
  30     i->oper_state = MPLS_OPER_DOWN;
  31   }
  32   return i;
  33 }
  34
  35 void lsr_if_delete(lsr_if * 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_if_get_next_index()
  43 {
  44   uint32_t retval = _lsr_if_next_index;
  45
  46   _lsr_if_next_index++;
  47   if (retval > _lsr_if_next_index) {
  48     _lsr_if_next_index = 1;
  49   }
  50   return retval;
  51 }
  52
  53 mpls_return_enum lsr_if_add_outsegment(lsr_if *iff, lsr_outsegment *o) {
  54   if (iff && o) {
  55     MPLS_REFCNT_HOLD(o);
  56     MPLS_LIST_ADD_HEAD(&iff->outsegment_root, o, _if, lsr_outsegment);
  57     _lsr_outsegment_add_if(o, iff);
  58     return MPLS_SUCCESS;
  59   }
  60   return MPLS_FAILURE;
  61 }
  62
  63 mpls_return_enum lsr_if_del_outsegment(lsr_if *iff, lsr_outsegment *o) {
  64   if (iff && o) {
  65     MPLS_LIST_REMOVE(&iff->outsegment_root, o, _if);
  66     _lsr_outsegment_del_if(o);
  67     MPLS_REFCNT_RELEASE(o, lsr_outsegment_delete);
  68     return MPLS_SUCCESS;
  69   }
  70   return MPLS_FAILURE;
  71 }