isisd/isis_routemap.c

   1 /*
   2  * IS-IS Rout(e)ing protocol - isis_routemap.c
   3  *
   4  * Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <zebra.h>
  22
  23 #include "command.h"
  24 #include "filter.h"
  25 #include "hash.h"
  26 #include "if.h"
  27 #include "linklist.h"
  28 #include "log.h"
  29 #include "memory.h"
  30 #include "prefix.h"
  31 #include "plist.h"
  32 #include "routemap.h"
  33 #include "table.h"
  34 #include "thread.h"
  35 #include "vty.h"
  36
  37 #include "isis_constants.h"
  38 #include "isis_common.h"
  39 #include "isis_flags.h"
  40 #include "dict.h"
  41 #include "isisd.h"
  42 #include "isis_misc.h"
  43 #include "isis_adjacency.h"
  44 #include "isis_circuit.h"
  45 #include "isis_tlv.h"
  46 #include "isis_pdu.h"
  47 #include "isis_lsp.h"
  48 #include "isis_spf.h"
  49 #include "isis_route.h"
  50 #include "isis_zebra.h"
  51 #include "isis_routemap.h"
  52
  53 static route_map_result_t
  54 route_match_ip_address(void *rule, struct prefix *prefix,
  55                        route_map_object_t type, void *object)
  56 {
  57   struct access_list *alist;
  58
  59   if (type != RMAP_ISIS)
  60     return RMAP_NOMATCH;
  61
  62   alist = access_list_lookup(AFI_IP, (char*)rule);
  63   if (access_list_apply(alist, prefix) != FILTER_DENY)
  64     return RMAP_MATCH;
  65
  66   return RMAP_NOMATCH;
  67 }
  68
  69 static void *
  70 route_match_ip_address_compile(const char *arg)
  71 {
  72   return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
  73 }
  74
  75 static void
  76 route_match_ip_address_free(void *rule)
  77 {
  78   XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
  79 }
  80
  81 static struct route_map_rule_cmd route_match_ip_address_cmd =
  82 {
  83   "ip address",
  84   route_match_ip_address,
  85   route_match_ip_address_compile,
  86   route_match_ip_address_free
  87 };
  88
  89 /* ------------------------------------------------------------*/
  90
  91 static route_map_result_t
  92 route_match_ip_address_prefix_list(void *rule, struct prefix *prefix,
  93                                    route_map_object_t type, void *object)
  94 {
  95   struct prefix_list *plist;
  96
  97   if (type != RMAP_ISIS)
  98     return RMAP_NOMATCH;
  99
 100   plist = prefix_list_lookup(AFI_IP, (char*)rule);
 101   if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
 102     return RMAP_MATCH;
 103
 104   return RMAP_NOMATCH;
 105 }
 106
 107 static void *
 108 route_match_ip_address_prefix_list_compile(const char *arg)
 109 {
 110   return XSTRDUP (MTYPE_ROUTE_MAP_COMPILED, arg);
 111 }
 112
 113 static void
 114 route_match_ip_address_prefix_list_free (void *rule)
 115 {
 116   XFREE (MTYPE_ROUTE_MAP_COMPILED, rule);
 117 }
 118
 119 struct route_map_rule_cmd route_match_ip_address_prefix_list_cmd =
 120 {
 121   "ip address prefix-list",
 122   route_match_ip_address_prefix_list,
 123   route_match_ip_address_prefix_list_compile,
 124   route_match_ip_address_prefix_list_free
 125 };
 126
 127 /* ------------------------------------------------------------*/
 128
 129 static route_map_result_t
 130 route_match_ipv6_address(void *rule, struct prefix *prefix,
 131                          route_map_object_t type, void *object)
 132 {
 133   struct access_list *alist;
 134
 135   if (type != RMAP_ISIS)
 136     return RMAP_NOMATCH;
 137
 138   alist = access_list_lookup(AFI_IP6, (char*)rule);
 139   if (access_list_apply(alist, prefix) != FILTER_DENY)
 140     return RMAP_MATCH;
 141
 142   return RMAP_NOMATCH;
 143 }
 144
 145 static void *
 146 route_match_ipv6_address_compile(const char *arg)
 147 {
 148   return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
 149 }
 150
 151 static void
 152 route_match_ipv6_address_free(void *rule)
 153 {
 154   XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
 155 }
 156
 157 static struct route_map_rule_cmd route_match_ipv6_address_cmd =
 158 {
 159   "ipv6 address",
 160   route_match_ipv6_address,
 161   route_match_ipv6_address_compile,
 162   route_match_ipv6_address_free
 163 };
 164
 165 /* ------------------------------------------------------------*/
 166
 167 static route_map_result_t
 168 route_match_ipv6_address_prefix_list(void *rule, struct prefix *prefix,
 169                                      route_map_object_t type, void *object)
 170 {
 171   struct prefix_list *plist;
 172
 173   if (type != RMAP_ISIS)
 174     return RMAP_NOMATCH;
 175
 176   plist = prefix_list_lookup(AFI_IP6, (char*)rule);
 177   if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
 178     return RMAP_MATCH;
 179
 180   return RMAP_NOMATCH;
 181 }
 182
 183 static void *
 184 route_match_ipv6_address_prefix_list_compile(const char *arg)
 185 {
 186   return XSTRDUP (MTYPE_ROUTE_MAP_COMPILED, arg);
 187 }
 188
 189 static void
 190 route_match_ipv6_address_prefix_list_free (void *rule)
 191 {
 192   XFREE (MTYPE_ROUTE_MAP_COMPILED, rule);
 193 }
 194
 195 struct route_map_rule_cmd route_match_ipv6_address_prefix_list_cmd =
 196 {
 197   "ipv6 address prefix-list",
 198   route_match_ipv6_address_prefix_list,
 199   route_match_ipv6_address_prefix_list_compile,
 200   route_match_ipv6_address_prefix_list_free
 201 };
 202
 203 /* ------------------------------------------------------------*/
 204
 205 static route_map_result_t
 206 route_set_metric(void *rule, struct prefix *prefix,
 207                  route_map_object_t type, void *object)
 208 {
 209   uint32_t *metric;
 210   struct isis_ext_info *info;
 211
 212   if (type == RMAP_ISIS)
 213     {
 214       metric = rule;
 215       info = object;
 216
 217       info->metric = *metric;
 218     }
 219   return RMAP_OKAY;
 220 }
 221
 222 static void *
 223 route_set_metric_compile(const char *arg)
 224 {
 225   unsigned long metric;
 226   char *endp;
 227   uint32_t *ret;
 228
 229   metric = strtoul(arg, &endp, 10);
 230   if (arg[0] == '\0' || *endp != '\0' || metric > MAX_WIDE_PATH_METRIC)
 231     return NULL;
 232
 233   ret = XCALLOC(MTYPE_ROUTE_MAP_COMPILED, sizeof(*ret));
 234   *ret = metric;
 235
 236   return ret;
 237 }
 238
 239 static void
 240 route_set_metric_free(void *rule)
 241 {
 242   XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
 243 }
 244
 245 static struct route_map_rule_cmd route_set_metric_cmd =
 246 {
 247   "metric",
 248   route_set_metric,
 249   route_set_metric_compile,
 250   route_set_metric_free
 251 };
 252
 253 void
 254 isis_route_map_init(void)
 255 {
 256   route_map_init();
 257
 258   route_map_match_ip_address_hook (generic_match_add);
 259   route_map_no_match_ip_address_hook (generic_match_delete);
 260
 261   route_map_match_ip_address_prefix_list_hook (generic_match_add);
 262   route_map_no_match_ip_address_prefix_list_hook (generic_match_delete);
 263
 264   route_map_match_ipv6_address_hook (generic_match_add);
 265   route_map_no_match_ipv6_address_hook (generic_match_delete);
 266
 267   route_map_match_ipv6_address_prefix_list_hook (generic_match_add);
 268   route_map_no_match_ipv6_address_prefix_list_hook (generic_match_delete);
 269
 270   route_map_set_metric_hook (generic_set_add);
 271   route_map_no_set_metric_hook (generic_set_delete);
 272
 273   route_map_install_match(&route_match_ip_address_cmd);
 274   route_map_install_match(&route_match_ip_address_prefix_list_cmd);
 275   route_map_install_match(&route_match_ipv6_address_cmd);
 276   route_map_install_match(&route_match_ipv6_address_prefix_list_cmd);
 277   route_map_install_set(&route_set_metric_cmd);
 278 }