pathd/path_nb.c

   1 /*
   2  * Copyright (C) 2020  NetDEF, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the Free
   6  * Software Foundation; either version 2 of the License, or (at your option)
   7  * any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; see the file COPYING; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <zebra.h>
  20
  21 #include "northbound.h"
  22 #include "libfrr.h"
  23
  24 #include "pathd/path_nb.h"
  25
  26 static int iter_objfun_cb(const struct lyd_node *dnode, void *arg);
  27 static int dummy_create(struct nb_cb_create_args *args);
  28 static int dummy_modify(struct nb_cb_modify_args *args);
  29 static int dummy_destroy(struct nb_cb_destroy_args *args);
  30
  31 struct of_cb_pref {
  32         uint32_t index;
  33         enum objfun_type type;
  34         struct of_cb_pref *next;
  35 };
  36
  37 struct of_cb_args {
  38         struct of_cb_pref *first;
  39         uint32_t free_slot;
  40         struct of_cb_pref prefs[MAX_OBJFUN_TYPE];
  41 };
  42
  43 /* clang-format off */
  44 const struct frr_yang_module_info frr_pathd_info = {
  45         .name = "frr-pathd",
  46         .nodes = {
  47                 {
  48                         .xpath = "/frr-pathd:pathd",
  49                         .cbs = {
  50                                 .apply_finish = pathd_apply_finish,
  51                         },
  52                         .priority = NB_DFLT_PRIORITY + 1
  53                 },
  54                 {
  55                         .xpath = "/frr-pathd:pathd/srte/segment-list",
  56                         .cbs = {
  57                                 .create = pathd_srte_segment_list_create,
  58                                 .cli_show = cli_show_srte_segment_list,
  59                                 .cli_show_end = cli_show_srte_segment_list_end,
  60                                 .destroy = pathd_srte_segment_list_destroy,
  61                                 .get_next = pathd_srte_segment_list_get_next,
  62                                 .get_keys = pathd_srte_segment_list_get_keys,
  63                                 .lookup_entry = pathd_srte_segment_list_lookup_entry,
  64                         },
  65                         .priority = NB_DFLT_PRIORITY - 1
  66                 },
  67                 {
  68                         .xpath = "/frr-pathd:pathd/srte/segment-list/protocol-origin",
  69                         .cbs = {
  70                                 .modify = pathd_srte_segment_list_protocol_origin_modify,
  71                         },
  72                         .priority = NB_DFLT_PRIORITY - 1
  73                 },
  74                 {
  75                         .xpath = "/frr-pathd:pathd/srte/segment-list/originator",
  76                         .cbs = {
  77                                 .modify = pathd_srte_segment_list_originator_modify,
  78                         },
  79                         .priority = NB_DFLT_PRIORITY - 1
  80                 },
  81                 {
  82                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment",
  83                         .cbs = {
  84                                 .create = pathd_srte_segment_list_segment_create,
  85                                 .cli_show = cli_show_srte_segment_list_segment,
  86                                 .destroy = pathd_srte_segment_list_segment_destroy,
  87                         },
  88                         .priority = NB_DFLT_PRIORITY - 1
  89                 },
  90                 {
  91                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/sid-value",
  92                         .cbs = {
  93                                 .modify = pathd_srte_segment_list_segment_sid_value_modify,
  94                                 .destroy = pathd_srte_segment_list_segment_sid_value_destroy,
  95                         },
  96                         .priority = NB_DFLT_PRIORITY - 1
  97                 },
  98                 {
  99                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai",
 100                         .cbs = {
 101                                 .create = dummy_create,
 102                                 .destroy = pathd_srte_segment_list_segment_nai_destroy,
 103                                 .apply_finish = pathd_srte_segment_list_segment_nai_apply_finish
 104                         },
 105                         .priority = NB_DFLT_PRIORITY - 1
 106                 },
 107                 {
 108                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/type",
 109                         .cbs = {.modify = dummy_modify}
 110                 },
 111                 {
 112                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/local-address",
 113                         .cbs = {.modify = dummy_modify}
 114                 },
 115                 {
 116                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/local-interface",
 117                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 118                 },
 119                 {
 120                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/local-prefix-len",
 121                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 122                 },
 123                 {
 124                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/remote-address",
 125                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 126                 },
 127                 {
 128                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/remote-interface",
 129                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 130                 },
 131                 {
 132                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/algorithm",
 133                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 134                 },
 135                 {
 136                         .xpath = "/frr-pathd:pathd/srte/policy",
 137                         .cbs = {
 138                                 .create = pathd_srte_policy_create,
 139                                 .cli_show = cli_show_srte_policy,
 140                                 .cli_show_end = cli_show_srte_policy_end,
 141                                 .destroy = pathd_srte_policy_destroy,
 142                                 .get_next = pathd_srte_policy_get_next,
 143                                 .get_keys = pathd_srte_policy_get_keys,
 144                                 .lookup_entry = pathd_srte_policy_lookup_entry,
 145                         }
 146                 },
 147                 {
 148                         .xpath = "/frr-pathd:pathd/srte/policy/name",
 149                         .cbs = {
 150                                 .modify = pathd_srte_policy_name_modify,
 151                                 .cli_show = cli_show_srte_policy_name,
 152                                 .destroy = pathd_srte_policy_name_destroy,
 153                         }
 154                 },
 155                 {
 156                         .xpath = "/frr-pathd:pathd/srte/policy/binding-sid",
 157                         .cbs = {
 158                                 .modify = pathd_srte_policy_binding_sid_modify,
 159                                 .cli_show = cli_show_srte_policy_binding_sid,
 160                                 .destroy = pathd_srte_policy_binding_sid_destroy,
 161                         }
 162                 },
 163                 {
 164                         .xpath = "/frr-pathd:pathd/srte/policy/is-operational",
 165                         .cbs = {
 166                                 .get_elem = pathd_srte_policy_is_operational_get_elem
 167                         }
 168                 },
 169                 {
 170                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path",
 171                         .cbs = {
 172                                 .create = pathd_srte_policy_candidate_path_create,
 173                                 .cli_show = cli_show_srte_policy_candidate_path,
 174                                 .cli_show_end = cli_show_srte_policy_candidate_path_end,
 175                                 .destroy = pathd_srte_policy_candidate_path_destroy,
 176                                 .get_next = pathd_srte_policy_candidate_path_get_next,
 177                                 .get_keys = pathd_srte_policy_candidate_path_get_keys,
 178                                 .lookup_entry = pathd_srte_policy_candidate_path_lookup_entry,
 179                         }
 180                 },
 181                 {
 182                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/name",
 183                         .cbs = {
 184                                 .modify = pathd_srte_policy_candidate_path_name_modify,
 185                         }
 186                 },
 187                 {
 188                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/is-best-candidate-path",
 189                         .cbs = {
 190                                 .get_elem = pathd_srte_policy_candidate_path_is_best_candidate_path_get_elem,
 191                         }
 192                 },
 193                 {
 194                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/protocol-origin",
 195                         .cbs = {
 196                                 .modify = pathd_srte_policy_candidate_path_protocol_origin_modify,
 197                         }
 198                 },
 199                 {
 200                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/originator",
 201                         .cbs = {
 202                                 .modify = pathd_srte_policy_candidate_path_originator_modify,
 203                         }
 204                 },
 205                 {
 206                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/discriminator",
 207                         .cbs = {
 208                                 .get_elem = pathd_srte_policy_candidate_path_discriminator_get_elem,
 209                         }
 210                 },
 211                 {
 212                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/type",
 213                         .cbs = {
 214                                 .modify = pathd_srte_policy_candidate_path_type_modify,
 215                         }
 216                 },
 217                 {
 218                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/segment-list-name",
 219                         .cbs = {
 220                                 .destroy = pathd_srte_policy_candidate_path_segment_list_name_destroy,
 221                                 .modify = pathd_srte_policy_candidate_path_segment_list_name_modify,
 222                         }
 223                 },
 224                 {
 225                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/bandwidth",
 226                         .cbs = {
 227                                 .create = dummy_create,
 228                                 .destroy = pathd_srte_policy_candidate_path_bandwidth_destroy,
 229                                 .apply_finish = pathd_srte_policy_candidate_path_bandwidth_apply_finish
 230                         }
 231                 },
 232                 {
 233                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/bandwidth/required",
 234                         .cbs = {.modify = dummy_modify}
 235                 },
 236                 {
 237                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/bandwidth/value",
 238                         .cbs = {.modify = dummy_modify}
 239                 },
 240                 {
 241                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/affinity/exclude-any",
 242                         .cbs = {
 243                                 .modify = pathd_srte_policy_candidate_path_exclude_any_modify,
 244                                 .destroy = pathd_srte_policy_candidate_path_exclude_any_destroy,
 245                         }
 246                 },
 247                 {
 248                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/affinity/include-any",
 249                         .cbs = {
 250                                 .modify = pathd_srte_policy_candidate_path_include_any_modify,
 251                                 .destroy = pathd_srte_policy_candidate_path_include_any_destroy,
 252                         }
 253                 },
 254                 {
 255                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/affinity/include-all",
 256                         .cbs = {
 257                                 .modify = pathd_srte_policy_candidate_path_include_all_modify,
 258                                 .destroy = pathd_srte_policy_candidate_path_include_all_destroy,
 259                         }
 260                 },
 261                 {
 262                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics",
 263                         .cbs = {
 264                                 .create = dummy_create,
 265                                 .destroy = pathd_srte_policy_candidate_path_metrics_destroy,
 266                                 .apply_finish = pathd_srte_policy_candidate_path_metrics_apply_finish
 267                         }
 268                 },
 269                 {
 270                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics/value",
 271                         .cbs = {.modify = dummy_modify}
 272                 },
 273                 {
 274                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics/required",
 275                         .cbs = {.modify = dummy_modify}
 276                 },
 277                 {
 278                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics/is-bound",
 279                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 280                 },
 281                 {
 282                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics/is-computed",
 283                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 284                 },
 285                 {
 286                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/objective-function",
 287                         .cbs = {
 288                                 .create = dummy_create,
 289                                 .destroy = pathd_srte_policy_candidate_path_objfun_destroy,
 290                                 .apply_finish = pathd_srte_policy_candidate_path_objfun_apply_finish
 291                         }
 292                 },
 293                 {
 294                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/objective-function/required",
 295                         .cbs = {.modify = dummy_modify}
 296                 },
 297                 {
 298                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/objective-function/type",
 299                         .cbs = {.modify = dummy_modify}
 300                 },
 301                 {
 302                         .xpath = NULL,
 303                 },
 304         }
 305 };
 306
 307 void iter_objfun_prefs(const struct lyd_node *dnode, const char* path,
 308                        of_pref_cp_t fun, void *arg)
 309 {
 310         struct of_cb_args args = {0};
 311         struct of_cb_pref *p;
 312
 313         yang_dnode_iterate(iter_objfun_cb, &args, dnode, path);
 314         for (p = args.first; p != NULL; p = p->next)
 315                 fun(p->type, arg);
 316 }
 317
 318 int iter_objfun_cb(const struct lyd_node *dnode, void *arg)
 319 {
 320         struct of_cb_args *of_arg = arg;
 321         struct of_cb_pref *pref;
 322         struct of_cb_pref **p;
 323
 324         if (of_arg->free_slot >= MAX_OBJFUN_TYPE)
 325                 return YANG_ITER_STOP;
 326
 327         pref = &of_arg->prefs[of_arg->free_slot++];
 328
 329         pref->index = yang_dnode_get_uint32(dnode, "./index");
 330         pref->type = yang_dnode_get_enum(dnode, "./type");
 331
 332         /* Simplistic insertion sort */
 333         p = &of_arg->first;
 334         while (true) {
 335                 if (*p == NULL) {
 336                         *p = pref;
 337                         break;
 338                 }
 339                 if ((*p)->index >= pref->index) {
 340                         pref->next = *p;
 341                         *p = pref;
 342                         break;
 343                 }
 344                 p = &(*p)->next;
 345         }
 346
 347         return YANG_ITER_CONTINUE;
 348 }
 349
 350 int dummy_create(struct nb_cb_create_args *args)
 351 {
 352         return NB_OK;
 353 }
 354
 355 int dummy_modify(struct nb_cb_modify_args *args)
 356 {
 357         return NB_OK;
 358 }
 359
 360 int dummy_destroy(struct nb_cb_destroy_args *args)
 361 {
 362         return NB_OK;
 363 }