ldp/ldp_resource.c

   1
   2 /*
   3  *  Copyright (C) James R. Leu 2001
   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 "ldp_struct.h"
  11 #include "ldp_resource.h"
  12 #include "ldp_tunnel.h"
  13
  14 #include "mpls_assert.h"
  15 #include "mpls_mm_impl.h"
  16 #include "mpls_trace_impl.h"
  17
  18 static uint32_t _ldp_resource_next_index = 1;
  19
  20 ldp_resource *ldp_resource_create()
  21 {
  22   ldp_resource *r = (ldp_resource *) mpls_malloc(sizeof(ldp_resource));
  23
  24   if (r) {
  25     memset(r, 0, sizeof(ldp_resource));
  26     MPLS_REFCNT_INIT(r, 0);
  27     MPLS_LIST_ELEM_INIT(r, _global);
  28
  29     r->index = _ldp_resource_get_next_index();
  30   }
  31   return r;
  32 }
  33
  34 void ldp_resource_delete(ldp_resource * r)
  35 {
  36   // LDP_PRINT(g->user_data,"resource delete\n");
  37   MPLS_REFCNT_ASSERT(r, 0);
  38   mpls_free(r);
  39 }
  40
  41 uint32_t _ldp_resource_get_next_index()
  42 {
  43   uint32_t retval = _ldp_resource_next_index;
  44
  45   _ldp_resource_next_index++;
  46   if (retval > _ldp_resource_next_index) {
  47     _ldp_resource_next_index = 1;
  48   }
  49   return retval;
  50 }
  51
  52 mpls_return_enum _ldp_resource_add_tunnel(ldp_resource * r, ldp_tunnel * t)
  53 {
  54   if (r && t) {
  55     MPLS_REFCNT_HOLD(t);
  56     r->tunnel = t;
  57     return MPLS_SUCCESS;
  58   }
  59   return MPLS_FAILURE;
  60 }
  61
  62 mpls_return_enum _ldp_resource_del_tunnel(ldp_resource * r)
  63 {
  64   if (r && r->tunnel) {
  65     MPLS_REFCNT_RELEASE(r->tunnel, ldp_tunnel_delete);
  66     r->tunnel = NULL;
  67     return MPLS_SUCCESS;
  68   }
  69   return MPLS_FAILURE;
  70 }
  71
  72 mpls_bool ldp_resource_in_use(ldp_resource * r)
  73 {
  74   if (r->tunnel && (r->tunnel->admin_state == MPLS_ADMIN_ENABLE)) {
  75     return MPLS_BOOL_TRUE;
  76   }
  77   return MPLS_BOOL_FALSE;
  78 }