ldpd/rlfa.h

   1 /*
   2  * Copyright (C) 2020  NetDEF, Inc.
   3  *                     Renato Westphal
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the Free
   7  * Software Foundation; either version 2 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; see the file COPYING; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  18  */
  19
  20 #ifndef _LDPD_RLFA_H_
  21 #define _LDPD_RLFA_H_
  22
  23 #include "openbsd-tree.h"
  24 #include "zclient.h"
  25
  26 struct ldp_rlfa_client {
  27         RB_ENTRY(ldp_rlfa_client) entry;
  28
  29         /* IGP instance data. */
  30         struct zapi_rlfa_igp igp;
  31
  32         /* Backpointer to RLFA node. */
  33         struct ldp_rlfa_node *node;
  34 };
  35 RB_HEAD(ldp_rlfa_client_head, ldp_rlfa_client);
  36 RB_PROTOTYPE(ldp_rlfa_client_head, ldp_rlfa_client, entry,
  37              ldp_rlfa_client_compare);
  38
  39 struct ldp_rlfa_node {
  40         RB_ENTRY(ldp_rlfa_node) entry;
  41
  42         /* Destination prefix. */
  43         struct prefix destination;
  44
  45         /* PQ node address. */
  46         struct in_addr pq_address;
  47
  48         /* RLFA clients. */
  49         struct ldp_rlfa_client_head clients;
  50
  51         /* Label allocated by the PQ node to the RLFA destination. */
  52         mpls_label_t pq_label;
  53 };
  54 RB_HEAD(ldp_rlfa_node_head, ldp_rlfa_node);
  55 RB_PROTOTYPE(ldp_rlfa_node_head, ldp_rlfa_node, entry, ldp_rlfa_node_compare);
  56
  57 extern struct ldp_rlfa_node_head rlfa_node_tree;
  58
  59 /* prototypes */
  60 struct           ldp_rlfa_client *rlfa_client_new(struct ldp_rlfa_node *rnode,
  61                     struct zapi_rlfa_igp *igp);
  62 void             rlfa_client_del(struct ldp_rlfa_client *rclient);
  63 struct ldp_rlfa_client *rlfa_client_find(struct ldp_rlfa_node *rnode,
  64                     struct zapi_rlfa_igp *igp);
  65 struct ldp_rlfa_node *rlfa_node_new(const struct prefix *destination,
  66                     struct in_addr pq_address);
  67 void rlfa_node_del(struct ldp_rlfa_node *rnode);
  68 struct ldp_rlfa_node *rlfa_node_find(const struct prefix *destination,
  69                     struct in_addr pq_address);
  70 void             lde_rlfa_check(struct ldp_rlfa_client *rclient);
  71 void             lde_rlfa_client_send(struct ldp_rlfa_client *rclient);
  72 void             lde_rlfa_label_update(const struct fec *fec);
  73 void             lde_rlfa_update_clients(struct fec *fec, struct lde_nbr *ln,
  74                     uint32_t label);
  75 void             ldpe_rlfa_init(struct ldp_rlfa_client *rclient);
  76 void             ldpe_rlfa_exit(struct ldp_rlfa_client *rclient);
  77
  78 #endif /* _LDPD_RLFA_H_ */