isisd/isis_vty_common.c

   1 /*
   2  * IS-IS Rout(e)ing protocol - isis_vty_common.c
   3  *
   4  * This file contains the CLI that is shared between OpenFabric and IS-IS
   5  *
   6  * Copyright (C) 2001,2002   Sampo Saaristo
   7  *                           Tampere University of Technology
   8  *                           Institute of Communications Engineering
   9  * Copyright (C) 2016        David Lamparter, for NetDEF, Inc.
  10  * Copyright (C) 2018        Christian Franke, for NetDEF, Inc.
  11  *
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public Licenseas published by the Free
  14  * Software Foundation; either version 2 of the License, or (at your option)
  15  * any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,but WITHOUT
  18  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  20  * more details.
  21  *
  22  * You should have received a copy of the GNU General Public License along
  23  * with this program; see the file COPYING; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  25  */
  26
  27 #include <zebra.h>
  28
  29 #include "command.h"
  30 #include "bfd.h"
  31
  32 #include "isis_circuit.h"
  33 #include "isis_csm.h"
  34 #include "isis_misc.h"
  35 #include "isisd.h"
  36 #include "isis_bfd.h"
  37 #include "isis_vty_common.h"
  38
  39 struct isis_circuit *isis_circuit_lookup(struct vty *vty)
  40 {
  41         struct interface *ifp = VTY_GET_CONTEXT(interface);
  42         struct isis_circuit *circuit;
  43
  44         if (!ifp) {
  45                 vty_out(vty, "Invalid interface \n");
  46                 return NULL;
  47         }
  48
  49         circuit = circuit_scan_by_ifp(ifp);
  50         if (!circuit) {
  51                 vty_out(vty, "ISIS is not enabled on circuit %s\n", ifp->name);
  52                 return NULL;
  53         }
  54
  55         return circuit;
  56 }
  57
  58 DEFUN (isis_bfd,
  59        isis_bfd_cmd,
  60        PROTO_NAME " bfd",
  61        PROTO_HELP
  62        "Enable BFD support\n")
  63 {
  64         struct isis_circuit *circuit = isis_circuit_lookup(vty);
  65
  66         if (!circuit)
  67                 return CMD_ERR_NO_MATCH;
  68
  69         if (circuit->bfd_info
  70             && CHECK_FLAG(circuit->bfd_info->flags, BFD_FLAG_PARAM_CFG)) {
  71                 return CMD_SUCCESS;
  72         }
  73
  74         isis_bfd_circuit_param_set(circuit, BFD_DEF_MIN_RX,
  75                                    BFD_DEF_MIN_TX, BFD_DEF_DETECT_MULT, true);
  76
  77         return CMD_SUCCESS;
  78 }
  79
  80 DEFUN (no_isis_bfd,
  81        no_isis_bfd_cmd,
  82        "no " PROTO_NAME " bfd",
  83        NO_STR
  84        PROTO_HELP
  85        "Disables BFD support\n"
  86 )
  87 {
  88         struct isis_circuit *circuit = isis_circuit_lookup(vty);
  89
  90         if (!circuit)
  91                 return CMD_ERR_NO_MATCH;
  92
  93         if (!circuit->bfd_info)
  94                 return CMD_SUCCESS;
  95
  96         isis_bfd_circuit_cmd(circuit, ZEBRA_BFD_DEST_DEREGISTER);
  97         bfd_info_free(&circuit->bfd_info);
  98         return CMD_SUCCESS;
  99 }
 100
 101 void isis_vty_init(void)
 102 {
 103         install_element(INTERFACE_NODE, &isis_bfd_cmd);
 104         install_element(INTERFACE_NODE, &no_isis_bfd_cmd);
 105
 106         isis_vty_daemon_init();
 107 }