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 "isis_mt.h"
  36 #include "isisd.h"
  37 #include "isis_bfd.h"
  38 #include "isis_vty_common.h"
  39
  40 struct isis_circuit *isis_circuit_lookup(struct vty *vty)
  41 {
  42         struct interface *ifp = VTY_GET_CONTEXT(interface);
  43         struct isis_circuit *circuit;
  44
  45         if (!ifp) {
  46                 vty_out(vty, "Invalid interface \n");
  47                 return NULL;
  48         }
  49
  50         circuit = circuit_scan_by_ifp(ifp);
  51         if (!circuit) {
  52                 vty_out(vty, "ISIS is not enabled on circuit %s\n", ifp->name);
  53                 return NULL;
  54         }
  55
  56         return circuit;
  57 }
  58
  59 DEFUN (circuit_topology,
  60        circuit_topology_cmd,
  61        PROTO_NAME " topology " ISIS_MT_NAMES,
  62        PROTO_HELP
  63        "Configure interface IS-IS topologies\n"
  64        ISIS_MT_DESCRIPTIONS)
  65 {
  66         struct isis_circuit *circuit = isis_circuit_lookup(vty);
  67         if (!circuit)
  68                 return CMD_ERR_NO_MATCH;
  69         const char *arg = argv[2]->arg;
  70         uint16_t mtid = isis_str2mtid(arg);
  71
  72         if (circuit->area && circuit->area->oldmetric) {
  73                 vty_out(vty,
  74                         "Multi topology IS-IS can only be used with wide metrics\n");
  75                 return CMD_WARNING_CONFIG_FAILED;
  76         }
  77
  78         if (mtid == (uint16_t)-1) {
  79                 vty_out(vty, "Don't know topology '%s'\n", arg);
  80                 return CMD_WARNING_CONFIG_FAILED;
  81         }
  82
  83         return isis_circuit_mt_enabled_set(circuit, mtid, true);
  84 }
  85
  86 DEFUN (no_circuit_topology,
  87        no_circuit_topology_cmd,
  88        "no " PROTO_NAME " topology " ISIS_MT_NAMES,
  89        NO_STR
  90        PROTO_HELP
  91        "Configure interface IS-IS topologies\n"
  92        ISIS_MT_DESCRIPTIONS)
  93 {
  94         struct isis_circuit *circuit = isis_circuit_lookup(vty);
  95         if (!circuit)
  96                 return CMD_ERR_NO_MATCH;
  97         const char *arg = argv[3]->arg;
  98         uint16_t mtid = isis_str2mtid(arg);
  99
 100         if (circuit->area && circuit->area->oldmetric) {
 101                 vty_out(vty,
 102                         "Multi topology IS-IS can only be used with wide metrics\n");
 103                 return CMD_WARNING_CONFIG_FAILED;
 104         }
 105
 106         if (mtid == (uint16_t)-1) {
 107                 vty_out(vty, "Don't know topology '%s'\n", arg);
 108                 return CMD_WARNING_CONFIG_FAILED;
 109         }
 110
 111         return isis_circuit_mt_enabled_set(circuit, mtid, false);
 112 }
 113
 114 DEFUN (isis_bfd,
 115        isis_bfd_cmd,
 116        PROTO_NAME " bfd",
 117        PROTO_HELP
 118        "Enable BFD support\n")
 119 {
 120         struct isis_circuit *circuit = isis_circuit_lookup(vty);
 121
 122         if (!circuit)
 123                 return CMD_ERR_NO_MATCH;
 124
 125         if (circuit->bfd_info
 126             && CHECK_FLAG(circuit->bfd_info->flags, BFD_FLAG_PARAM_CFG)) {
 127                 return CMD_SUCCESS;
 128         }
 129
 130         isis_bfd_circuit_param_set(circuit, BFD_DEF_MIN_RX,
 131                                    BFD_DEF_MIN_TX, BFD_DEF_DETECT_MULT, true);
 132
 133         return CMD_SUCCESS;
 134 }
 135
 136 DEFUN (no_isis_bfd,
 137        no_isis_bfd_cmd,
 138        "no " PROTO_NAME " bfd",
 139        NO_STR
 140        PROTO_HELP
 141        "Disables BFD support\n"
 142 )
 143 {
 144         struct isis_circuit *circuit = isis_circuit_lookup(vty);
 145
 146         if (!circuit)
 147                 return CMD_ERR_NO_MATCH;
 148
 149         if (!circuit->bfd_info)
 150                 return CMD_SUCCESS;
 151
 152         isis_bfd_circuit_cmd(circuit, ZEBRA_BFD_DEST_DEREGISTER);
 153         bfd_info_free(&circuit->bfd_info);
 154         return CMD_SUCCESS;
 155 }
 156
 157 void isis_vty_init(void)
 158 {
 159         install_element(INTERFACE_NODE, &circuit_topology_cmd);
 160         install_element(INTERFACE_NODE, &no_circuit_topology_cmd);
 161
 162         install_element(INTERFACE_NODE, &isis_bfd_cmd);
 163         install_element(INTERFACE_NODE, &no_isis_bfd_cmd);
 164
 165         isis_vty_daemon_init();
 166 }