isisd/isis_cli.c

   1 /*
   2  * Copyright (C) 2001,2002   Sampo Saaristo
   3  *                           Tampere University of Technology
   4  *                           Institute of Communications Engineering
   5  * Copyright (C) 2018        Volta Networks
   6  *                           Emanuele Di Pascale
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the Free
  10  * Software Foundation; either version 2 of the License, or (at your option)
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; see the file COPYING; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #include <zebra.h>
  24
  25 #include "if.h"
  26 #include "vrf.h"
  27 #include "log.h"
  28 #include "prefix.h"
  29 #include "command.h"
  30 #include "northbound_cli.h"
  31 #include "libfrr.h"
  32 #include "yang.h"
  33 #include "lib/linklist.h"
  34 #include "isisd/isisd.h"
  35 #include "isisd/isis_cli.h"
  36 #include "isisd/isis_misc.h"
  37 #include "isisd/isis_circuit.h"
  38 #include "isisd/isis_csm.h"
  39
  40 #ifndef VTYSH_EXTRACT_PL
  41 #include "isisd/isis_cli_clippy.c"
  42 #endif
  43
  44 #ifndef FABRICD
  45
  46 /*
  47  * XPath: /frr-isisd:isis/instance
  48  */
  49 DEFPY_NOSH(router_isis, router_isis_cmd, "router isis WORD$tag",
  50            ROUTER_STR
  51            "ISO IS-IS\n"
  52            "ISO Routing area tag\n")
  53 {
  54         int ret;
  55         char base_xpath[XPATH_MAXLEN];
  56
  57         snprintf(base_xpath, XPATH_MAXLEN,
  58                  "/frr-isisd:isis/instance[area-tag='%s']", tag);
  59         nb_cli_enqueue_change(vty, ".", NB_OP_CREATE, NULL);
  60         /* default value in yang for is-type is level-1, but in FRR
  61          * the first instance is assigned is-type level-1-2. We
  62          * need to make sure to set it in the yang model so that it
  63          * is consistent with what FRR sees.
  64          */
  65         if (listcount(isis->area_list) == 0)
  66                 nb_cli_enqueue_change(vty, "./is-type", NB_OP_MODIFY,
  67                                       "level-1-2");
  68         ret = nb_cli_apply_changes(vty, base_xpath);
  69         if (ret == CMD_SUCCESS)
  70                 VTY_PUSH_XPATH(ISIS_NODE, base_xpath);
  71
  72         return ret;
  73 }
  74
  75 DEFPY(no_router_isis, no_router_isis_cmd, "no router isis WORD$tag",
  76       NO_STR ROUTER_STR
  77       "ISO IS-IS\n"
  78       "ISO Routing area tag\n")
  79 {
  80         char temp_xpath[XPATH_MAXLEN];
  81         struct listnode *node, *nnode;
  82         struct isis_circuit *circuit = NULL;
  83         struct isis_area *area = NULL;
  84
  85         area = isis_area_lookup(tag);
  86         if (!area) {
  87                 vty_out(vty, "ISIS area %s not found.\n", tag);
  88                 return CMD_ERR_NOTHING_TODO;
  89         }
  90
  91         nb_cli_enqueue_change(vty, ".", NB_OP_DELETE, NULL);
  92         if (area->circuit_list && listcount(area->circuit_list)) {
  93                 for (ALL_LIST_ELEMENTS(area->circuit_list, node, nnode,
  94                                        circuit)) {
  95                         /* add callbacks to delete each of the circuits listed
  96                          */
  97                         const char *vrf_name =
  98                                 vrf_lookup_by_id(circuit->interface->vrf_id)
  99                                         ->name;
 100                         snprintf(
 101                                 temp_xpath, XPATH_MAXLEN,
 102                                 "/frr-interface:lib/interface[name='%s'][vrf='%s']/frr-isisd:isis",
 103                                 circuit->interface->name, vrf_name);
 104                         nb_cli_enqueue_change(vty, temp_xpath, NB_OP_DELETE,
 105                                               NULL);
 106                 }
 107         }
 108
 109         return nb_cli_apply_changes(
 110                 vty, "/frr-isisd:isis/instance[area-tag='%s']", tag);
 111 }
 112
 113 void cli_show_router_isis(struct vty *vty, struct lyd_node *dnode,
 114                           bool show_defaults)
 115 {
 116         vty_out(vty, "!\n");
 117         vty_out(vty, "router isis %s\n",
 118                 yang_dnode_get_string(dnode, "./area-tag"));
 119 }
 120
 121 /*
 122  * XPath: /frr-interface:lib/interface/frr-isisd:isis/
 123  * XPath: /frr-interface:lib/interface/frr-isisd:isis/ipv4-routing
 124  * XPath: /frr-interface:lib/interface/frr-isisd:isis/ipv6-routing
 125  * XPath: /frr-isisd:isis/instance
 126  */
 127 DEFPY(ip_router_isis, ip_router_isis_cmd, "ip router isis WORD$tag",
 128       "Interface Internet Protocol config commands\n"
 129       "IP router interface commands\n"
 130       "IS-IS routing protocol\n"
 131       "Routing process tag\n")
 132 {
 133         char temp_xpath[XPATH_MAXLEN];
 134         const char *circ_type;
 135         struct isis_area *area;
 136
 137         /* area will be created if it is not present. make sure the yang model
 138          * is synced with FRR and call the appropriate NB cb.
 139          */
 140         area = isis_area_lookup(tag);
 141         if (!area) {
 142                 snprintf(temp_xpath, XPATH_MAXLEN,
 143                          "/frr-isisd:isis/instance[area-tag='%s']", tag);
 144                 nb_cli_enqueue_change(vty, temp_xpath, NB_OP_CREATE, tag);
 145                 snprintf(temp_xpath, XPATH_MAXLEN,
 146                          "/frr-isisd:isis/instance[area-tag='%s']/is-type",
 147                          tag);
 148                 nb_cli_enqueue_change(
 149                         vty, temp_xpath, NB_OP_MODIFY,
 150                         listcount(isis->area_list) == 0 ? "level-1-2" : NULL);
 151                 nb_cli_enqueue_change(vty, "./frr-isisd:isis", NB_OP_CREATE,
 152                                       NULL);
 153                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/area-tag",
 154                                       NB_OP_MODIFY, tag);
 155                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/ipv4-routing",
 156                                       NB_OP_CREATE, NULL);
 157                 nb_cli_enqueue_change(
 158                         vty, "./frr-isisd:isis/circuit-type", NB_OP_MODIFY,
 159                         listcount(isis->area_list) == 0 ? "level-1-2"
 160                                                         : "level-1");
 161         } else {
 162                 /* area exists, circuit type defaults to its area's is_type */
 163                 switch (area->is_type) {
 164                 case IS_LEVEL_1:
 165                         circ_type = "level-1";
 166                         break;
 167                 case IS_LEVEL_2:
 168                         circ_type = "level-2";
 169                         break;
 170                 case IS_LEVEL_1_AND_2:
 171                         circ_type = "level-1-2";
 172                         break;
 173                 }
 174                 nb_cli_enqueue_change(vty, "./frr-isisd:isis", NB_OP_CREATE,
 175                                       NULL);
 176                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/area-tag",
 177                                       NB_OP_MODIFY, tag);
 178                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/ipv4-routing",
 179                                       NB_OP_CREATE, NULL);
 180                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/circuit-type",
 181                                       NB_OP_MODIFY, circ_type);
 182         }
 183
 184         return nb_cli_apply_changes(vty, NULL);
 185 }
 186
 187 DEFPY(ip6_router_isis, ip6_router_isis_cmd, "ipv6 router isis WORD$tag",
 188       "Interface Internet Protocol config commands\n"
 189       "IP router interface commands\n"
 190       "IS-IS routing protocol\n"
 191       "Routing process tag\n")
 192 {
 193         char temp_xpath[XPATH_MAXLEN];
 194         const char *circ_type;
 195         struct isis_area *area;
 196
 197         /* area will be created if it is not present. make sure the yang model
 198          * is synced with FRR and call the appropriate NB cb.
 199          */
 200         area = isis_area_lookup(tag);
 201         if (!area) {
 202                 snprintf(temp_xpath, XPATH_MAXLEN,
 203                          "/frr-isisd:isis/instance[area-tag='%s']", tag);
 204                 nb_cli_enqueue_change(vty, temp_xpath, NB_OP_CREATE, tag);
 205                 snprintf(temp_xpath, XPATH_MAXLEN,
 206                          "/frr-isisd:isis/instance[area-tag='%s']/is-type",
 207                          tag);
 208                 nb_cli_enqueue_change(
 209                         vty, temp_xpath, NB_OP_MODIFY,
 210                         listcount(isis->area_list) == 0 ? "level-1-2" : NULL);
 211                 nb_cli_enqueue_change(vty, "./frr-isisd:isis", NB_OP_CREATE,
 212                                       NULL);
 213                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/area-tag",
 214                                       NB_OP_MODIFY, tag);
 215                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/ipv6-routing",
 216                                       NB_OP_CREATE, NULL);
 217                 nb_cli_enqueue_change(
 218                         vty, "./frr-isisd:isis/circuit-type", NB_OP_MODIFY,
 219                         listcount(isis->area_list) == 0 ? "level-1-2"
 220                                                         : "level-1");
 221         } else {
 222                 /* area exists, circuit type defaults to its area's is_type */
 223                 switch (area->is_type) {
 224                 case IS_LEVEL_1:
 225                         circ_type = "level-1";
 226                         break;
 227                 case IS_LEVEL_2:
 228                         circ_type = "level-2";
 229                         break;
 230                 case IS_LEVEL_1_AND_2:
 231                         circ_type = "level-1-2";
 232                         break;
 233                 }
 234                 nb_cli_enqueue_change(vty, "./frr-isisd:isis", NB_OP_CREATE,
 235                                       NULL);
 236                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/area-tag",
 237                                       NB_OP_MODIFY, tag);
 238                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/ipv6-routing",
 239                                       NB_OP_CREATE, NULL);
 240                 nb_cli_enqueue_change(vty, "./frr-isisd:isis/circuit-type",
 241                                       NB_OP_MODIFY, circ_type);
 242         }
 243
 244         return nb_cli_apply_changes(vty, NULL);
 245 }
 246
 247 DEFPY(no_ip_router_isis, no_ip_router_isis_cmd,
 248       "no <ip|ipv6>$ip router isis [WORD]$tag",
 249       NO_STR
 250       "Interface Internet Protocol config commands\n"
 251       "IP router interface commands\n"
 252       "IP router interface commands\n"
 253       "IS-IS routing protocol\n"
 254       "Routing process tag\n")
 255 {
 256         const struct lyd_node *dnode =
 257                 yang_dnode_get(running_config->dnode, VTY_CURR_XPATH);
 258         struct interface *ifp;
 259         struct isis_circuit *circuit = NULL;
 260
 261         /* check for the existance of a circuit */
 262         if (dnode) {
 263                 ifp = yang_dnode_get_entry(dnode, false);
 264                 if (ifp)
 265                         circuit = circuit_scan_by_ifp(ifp);
 266         }
 267
 268         /* if both ipv4 and ipv6 are off delete the interface isis container too
 269          */
 270         if (!strncmp(ip, "ipv6", strlen("ipv6"))) {
 271                 if (circuit && !circuit->ip_router)
 272                         nb_cli_enqueue_change(vty, "./frr-isisd:isis",
 273                                               NB_OP_DELETE, NULL);
 274                 else
 275                         nb_cli_enqueue_change(vty,
 276                                               "./frr-isisd:isis/ipv6-routing",
 277                                               NB_OP_DELETE, NULL);
 278         } else { /* no ipv4  */
 279                 if (circuit && !circuit->ipv6_router)
 280                         nb_cli_enqueue_change(vty, "./frr-isisd:isis",
 281                                               NB_OP_DELETE, NULL);
 282                 else
 283                         nb_cli_enqueue_change(vty,
 284                                               "./frr-isisd:isis/ipv4-routing",
 285                                               NB_OP_DELETE, NULL);
 286         }
 287
 288         return nb_cli_apply_changes(vty, NULL);
 289 }
 290
 291 void cli_show_ip_isis_ipv4(struct vty *vty, struct lyd_node *dnode,
 292                            bool show_defaults)
 293 {
 294         vty_out(vty, " ip router isis %s\n",
 295                 yang_dnode_get_string(dnode, "../area-tag"));
 296 }
 297
 298 void cli_show_ip_isis_ipv6(struct vty *vty, struct lyd_node *dnode,
 299                            bool show_defaults)
 300 {
 301         vty_out(vty, " ipv6 router isis %s\n",
 302                 yang_dnode_get_string(dnode, "../area-tag"));
 303 }
 304
 305 void isis_cli_init(void)
 306 {
 307         install_element(CONFIG_NODE, &router_isis_cmd);
 308         install_element(CONFIG_NODE, &no_router_isis_cmd);
 309
 310         install_element(INTERFACE_NODE, &ip_router_isis_cmd);
 311         install_element(INTERFACE_NODE, &ip6_router_isis_cmd);
 312         install_element(INTERFACE_NODE, &no_ip_router_isis_cmd);
 313 }
 314
 315 #endif /* ifndef FABRICD */