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                                 .destroy = pathd_srte_segment_list_destroy,
  60                                 .get_next = pathd_srte_segment_list_get_next,
  61                                 .get_keys = pathd_srte_segment_list_get_keys,
  62                                 .lookup_entry = pathd_srte_segment_list_lookup_entry,
  63                         },
  64                         .priority = NB_DFLT_PRIORITY - 1
  65                 },
  66                 {
  67                         .xpath = "/frr-pathd:pathd/srte/segment-list/protocol-origin",
  68                         .cbs = {
  69                                 .modify = pathd_srte_segment_list_protocol_origin_modify,
  70                         },
  71                         .priority = NB_DFLT_PRIORITY - 1
  72                 },
  73                 {
  74                         .xpath = "/frr-pathd:pathd/srte/segment-list/originator",
  75                         .cbs = {
  76                                 .modify = pathd_srte_segment_list_originator_modify,
  77                         },
  78                         .priority = NB_DFLT_PRIORITY - 1
  79                 },
  80                 {
  81                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment",
  82                         .cbs = {
  83                                 .create = pathd_srte_segment_list_segment_create,
  84                                 .cli_show = cli_show_srte_segment_list_segment,
  85                                 .destroy = pathd_srte_segment_list_segment_destroy,
  86                         },
  87                         .priority = NB_DFLT_PRIORITY - 1
  88                 },
  89                 {
  90                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/sid-value",
  91                         .cbs = {
  92                                 .modify = pathd_srte_segment_list_segment_sid_value_modify,
  93                         },
  94                         .priority = NB_DFLT_PRIORITY - 1
  95                 },
  96                 {
  97                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai",
  98                         .cbs = {
  99                                 .create = dummy_create,
 100                                 .destroy = pathd_srte_segment_list_segment_nai_destroy,
 101                                 .apply_finish = pathd_srte_segment_list_segment_nai_apply_finish
 102                         },
 103                         .priority = NB_DFLT_PRIORITY - 1
 104                 },
 105                 {
 106                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/type",
 107                         .cbs = {.modify = dummy_modify}
 108                 },
 109                 {
 110                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/local-address",
 111                         .cbs = {.modify = dummy_modify}
 112                 },
 113                 {
 114                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/local-interface",
 115                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 116                 },
 117                 {
 118                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/remote-address",
 119                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 120                 },
 121                 {
 122                         .xpath = "/frr-pathd:pathd/srte/segment-list/segment/nai/remote-interface",
 123                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 124                 },
 125                 {
 126                         .xpath = "/frr-pathd:pathd/srte/policy",
 127                         .cbs = {
 128                                 .create = pathd_srte_policy_create,
 129                                 .cli_show = cli_show_srte_policy,
 130                                 .destroy = pathd_srte_policy_destroy,
 131                                 .get_next = pathd_srte_policy_get_next,
 132                                 .get_keys = pathd_srte_policy_get_keys,
 133                                 .lookup_entry = pathd_srte_policy_lookup_entry,
 134                         }
 135                 },
 136                 {
 137                         .xpath = "/frr-pathd:pathd/srte/policy/name",
 138                         .cbs = {
 139                                 .modify = pathd_srte_policy_name_modify,
 140                                 .cli_show = cli_show_srte_policy_name,
 141                                 .destroy = pathd_srte_policy_name_destroy,
 142                         }
 143                 },
 144                 {
 145                         .xpath = "/frr-pathd:pathd/srte/policy/binding-sid",
 146                         .cbs = {
 147                                 .modify = pathd_srte_policy_binding_sid_modify,
 148                                 .cli_show = cli_show_srte_policy_binding_sid,
 149                                 .destroy = pathd_srte_policy_binding_sid_destroy,
 150                         }
 151                 },
 152                 {
 153                         .xpath = "/frr-pathd:pathd/srte/policy/is-operational",
 154                         .cbs = {
 155                                 .get_elem = pathd_srte_policy_is_operational_get_elem
 156                         }
 157                 },
 158                 {
 159                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path",
 160                         .cbs = {
 161                                 .create = pathd_srte_policy_candidate_path_create,
 162                                 .cli_show = cli_show_srte_policy_candidate_path,
 163                                 .destroy = pathd_srte_policy_candidate_path_destroy,
 164                                 .get_next = pathd_srte_policy_candidate_path_get_next,
 165                                 .get_keys = pathd_srte_policy_candidate_path_get_keys,
 166                                 .lookup_entry = pathd_srte_policy_candidate_path_lookup_entry,
 167                         }
 168                 },
 169                 {
 170                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/name",
 171                         .cbs = {
 172                                 .modify = pathd_srte_policy_candidate_path_name_modify,
 173                         }
 174                 },
 175                 {
 176                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/is-best-candidate-path",
 177                         .cbs = {
 178                                 .get_elem = pathd_srte_policy_candidate_path_is_best_candidate_path_get_elem,
 179                         }
 180                 },
 181                 {
 182                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/protocol-origin",
 183                         .cbs = {
 184                                 .modify = pathd_srte_policy_candidate_path_protocol_origin_modify,
 185                         }
 186                 },
 187                 {
 188                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/originator",
 189                         .cbs = {
 190                                 .modify = pathd_srte_policy_candidate_path_originator_modify,
 191                         }
 192                 },
 193                 {
 194                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/discriminator",
 195                         .cbs = {
 196                                 .get_elem = pathd_srte_policy_candidate_path_discriminator_get_elem,
 197                         }
 198                 },
 199                 {
 200                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/type",
 201                         .cbs = {
 202                                 .modify = pathd_srte_policy_candidate_path_type_modify,
 203                         }
 204                 },
 205                 {
 206                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/segment-list-name",
 207                         .cbs = {
 208                                 .destroy = pathd_srte_policy_candidate_path_segment_list_name_destroy,
 209                                 .modify = pathd_srte_policy_candidate_path_segment_list_name_modify,
 210                         }
 211                 },
 212                 {
 213                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/bandwidth",
 214                         .cbs = {
 215                                 .create = dummy_create,
 216                                 .destroy = pathd_srte_policy_candidate_path_bandwidth_destroy,
 217                                 .apply_finish = pathd_srte_policy_candidate_path_bandwidth_apply_finish
 218                         }
 219                 },
 220                 {
 221                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/bandwidth/required",
 222                         .cbs = {.modify = dummy_modify}
 223                 },
 224                 {
 225                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/bandwidth/value",
 226                         .cbs = {.modify = dummy_modify}
 227                 },
 228                 {
 229                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/affinity/exclude-any",
 230                         .cbs = {
 231                                 .modify = pathd_srte_policy_candidate_path_exclude_any_modify,
 232                                 .destroy = pathd_srte_policy_candidate_path_exclude_any_destroy,
 233                         }
 234                 },
 235                 {
 236                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/affinity/include-any",
 237                         .cbs = {
 238                                 .modify = pathd_srte_policy_candidate_path_include_any_modify,
 239                                 .destroy = pathd_srte_policy_candidate_path_include_any_destroy,
 240                         }
 241                 },
 242                 {
 243                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/affinity/include-all",
 244                         .cbs = {
 245                                 .modify = pathd_srte_policy_candidate_path_include_all_modify,
 246                                 .destroy = pathd_srte_policy_candidate_path_include_all_destroy,
 247                         }
 248                 },
 249                 {
 250                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics",
 251                         .cbs = {
 252                                 .create = dummy_create,
 253                                 .destroy = pathd_srte_policy_candidate_path_metrics_destroy,
 254                                 .apply_finish = pathd_srte_policy_candidate_path_metrics_apply_finish
 255                         }
 256                 },
 257                 {
 258                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics/value",
 259                         .cbs = {.modify = dummy_modify}
 260                 },
 261                 {
 262                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics/required",
 263                         .cbs = {.modify = dummy_modify}
 264                 },
 265                 {
 266                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics/is-bound",
 267                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 268                 },
 269                 {
 270                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/metrics/is-computed",
 271                         .cbs = {.modify = dummy_modify, .destroy = dummy_destroy}
 272                 },
 273                 {
 274                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/objective-function",
 275                         .cbs = {
 276                                 .create = dummy_create,
 277                                 .destroy = pathd_srte_policy_candidate_path_objfun_destroy,
 278                                 .apply_finish = pathd_srte_policy_candidate_path_objfun_apply_finish
 279                         }
 280                 },
 281                 {
 282                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/objective-function/required",
 283                         .cbs = {.modify = dummy_modify}
 284                 },
 285                 {
 286                         .xpath = "/frr-pathd:pathd/srte/policy/candidate-path/constraints/objective-function/type",
 287                         .cbs = {.modify = dummy_modify}
 288                 },
 289                 {
 290                         .xpath = NULL,
 291                 },
 292         }
 293 };
 294
 295 void iter_objfun_prefs(const struct lyd_node *dnode, const char* path,
 296                        of_pref_cp_t fun, void *arg)
 297 {
 298         struct of_cb_args args = {0};
 299         struct of_cb_pref *p;
 300
 301         yang_dnode_iterate(iter_objfun_cb, &args, dnode, path);
 302         for (p = args.first; p != NULL; p = p->next)
 303                 fun(p->type, arg);
 304 }
 305
 306 int iter_objfun_cb(const struct lyd_node *dnode, void *arg)
 307 {
 308         struct of_cb_args *of_arg = arg;
 309         struct of_cb_pref *pref;
 310         struct of_cb_pref **p;
 311
 312         if (of_arg->free_slot >= MAX_OBJFUN_TYPE)
 313                 return YANG_ITER_STOP;
 314
 315         pref = &of_arg->prefs[of_arg->free_slot++];
 316
 317         pref->index = yang_dnode_get_uint32(dnode, "./index");
 318         pref->type = yang_dnode_get_enum(dnode, "./type");
 319
 320         /* Simplistic insertion sort */
 321         p = &of_arg->first;
 322         while (true) {
 323                 if (*p == NULL) {
 324                         *p = pref;
 325                         break;
 326                 }
 327                 if ((*p)->index >= pref->index) {
 328                         pref->next = *p;
 329                         *p = pref;
 330                         break;
 331                 }
 332                 p = &(*p)->next;
 333         }
 334
 335         return YANG_ITER_CONTINUE;
 336 }
 337
 338 int dummy_create(struct nb_cb_create_args *args)
 339 {
 340         return NB_OK;
 341 }
 342
 343 int dummy_modify(struct nb_cb_modify_args *args)
 344 {
 345         return NB_OK;
 346 }
 347
 348 int dummy_destroy(struct nb_cb_destroy_args *args)
 349 {
 350         return NB_OK;
 351 }