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 "isisd.h"
  41 #include "isis_misc.h"
  42 #include "isis_adjacency.h"
  43 #include "isis_circuit.h"
  44 #include "isis_pdu.h"
  45 #include "isis_lsp.h"
  46 #include "isis_spf.h"
  47 #include "isis_route.h"
  48 #include "isis_zebra.h"
  49 #include "isis_routemap.h"
  50
  51 static enum route_map_cmd_result_t
  52 route_match_ip_address(void *rule, const struct prefix *prefix, void *object)
  53 {
  54         struct access_list *alist;
  55
  56         alist = access_list_lookup(AFI_IP, (char *)rule);
  57         if (access_list_apply(alist, prefix) != FILTER_DENY)
  58                 return RMAP_MATCH;
  59
  60         return RMAP_NOMATCH;
  61 }
  62
  63 static void *route_match_ip_address_compile(const char *arg)
  64 {
  65         return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
  66 }
  67
  68 static void route_match_ip_address_free(void *rule)
  69 {
  70         XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
  71 }
  72
  73 static const struct route_map_rule_cmd route_match_ip_address_cmd = {
  74         "ip address",
  75         route_match_ip_address,
  76         route_match_ip_address_compile,
  77         route_match_ip_address_free
  78 };
  79
  80 /* ------------------------------------------------------------*/
  81
  82 static enum route_map_cmd_result_t
  83 route_match_ip_address_prefix_list(void *rule, const struct prefix *prefix,
  84                                    void *object)
  85 {
  86         struct prefix_list *plist;
  87
  88         plist = prefix_list_lookup(AFI_IP, (char *)rule);
  89         if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
  90                 return RMAP_MATCH;
  91
  92         return RMAP_NOMATCH;
  93 }
  94
  95 static void *route_match_ip_address_prefix_list_compile(const char *arg)
  96 {
  97         return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
  98 }
  99
 100 static void route_match_ip_address_prefix_list_free(void *rule)
 101 {
 102         XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
 103 }
 104
 105 static const struct route_map_rule_cmd
 106                 route_match_ip_address_prefix_list_cmd = {
 107         "ip address prefix-list",
 108         route_match_ip_address_prefix_list,
 109         route_match_ip_address_prefix_list_compile,
 110         route_match_ip_address_prefix_list_free
 111 };
 112
 113 /* ------------------------------------------------------------*/
 114
 115 static enum route_map_cmd_result_t
 116 route_match_ipv6_address(void *rule, const struct prefix *prefix, void *object)
 117 {
 118         struct access_list *alist;
 119
 120         alist = access_list_lookup(AFI_IP6, (char *)rule);
 121         if (access_list_apply(alist, prefix) != FILTER_DENY)
 122                 return RMAP_MATCH;
 123
 124         return RMAP_NOMATCH;
 125 }
 126
 127 static void *route_match_ipv6_address_compile(const char *arg)
 128 {
 129         return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
 130 }
 131
 132 static void route_match_ipv6_address_free(void *rule)
 133 {
 134         XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
 135 }
 136
 137 static const struct route_map_rule_cmd route_match_ipv6_address_cmd = {
 138         "ipv6 address",
 139         route_match_ipv6_address,
 140         route_match_ipv6_address_compile,
 141         route_match_ipv6_address_free
 142 };
 143
 144 /* ------------------------------------------------------------*/
 145
 146 static enum route_map_cmd_result_t
 147 route_match_ipv6_address_prefix_list(void *rule, const struct prefix *prefix,
 148                                      void *object)
 149 {
 150         struct prefix_list *plist;
 151
 152         plist = prefix_list_lookup(AFI_IP6, (char *)rule);
 153         if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
 154                 return RMAP_MATCH;
 155
 156         return RMAP_NOMATCH;
 157 }
 158
 159 static void *route_match_ipv6_address_prefix_list_compile(const char *arg)
 160 {
 161         return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
 162 }
 163
 164 static void route_match_ipv6_address_prefix_list_free(void *rule)
 165 {
 166         XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
 167 }
 168
 169 static const struct route_map_rule_cmd
 170                 route_match_ipv6_address_prefix_list_cmd = {
 171         "ipv6 address prefix-list",
 172         route_match_ipv6_address_prefix_list,
 173         route_match_ipv6_address_prefix_list_compile,
 174         route_match_ipv6_address_prefix_list_free
 175 };
 176
 177 /* ------------------------------------------------------------*/
 178
 179 static enum route_map_cmd_result_t
 180 route_set_metric(void *rule, const struct prefix *prefix, void *object)
 181 {
 182         uint32_t *metric;
 183         struct isis_ext_info *info;
 184
 185         metric = rule;
 186         info = object;
 187
 188         info->metric = *metric;
 189
 190         return RMAP_OKAY;
 191 }
 192
 193 static void *route_set_metric_compile(const char *arg)
 194 {
 195         unsigned long metric;
 196         char *endp;
 197         uint32_t *ret;
 198
 199         metric = strtoul(arg, &endp, 10);
 200         if (arg[0] == '\0' || *endp != '\0' || metric > MAX_WIDE_PATH_METRIC)
 201                 return NULL;
 202
 203         ret = XCALLOC(MTYPE_ROUTE_MAP_COMPILED, sizeof(*ret));
 204         *ret = metric;
 205
 206         return ret;
 207 }
 208
 209 static void route_set_metric_free(void *rule)
 210 {
 211         XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
 212 }
 213
 214 static const struct route_map_rule_cmd route_set_metric_cmd = {
 215         "metric",
 216         route_set_metric,
 217         route_set_metric_compile,
 218         route_set_metric_free
 219 };
 220
 221 void isis_route_map_init(void)
 222 {
 223         route_map_init();
 224
 225         route_map_match_ip_address_hook(generic_match_add);
 226         route_map_no_match_ip_address_hook(generic_match_delete);
 227
 228         route_map_match_ip_address_prefix_list_hook(generic_match_add);
 229         route_map_no_match_ip_address_prefix_list_hook(generic_match_delete);
 230
 231         route_map_match_ipv6_address_hook(generic_match_add);
 232         route_map_no_match_ipv6_address_hook(generic_match_delete);
 233
 234         route_map_match_ipv6_address_prefix_list_hook(generic_match_add);
 235         route_map_no_match_ipv6_address_prefix_list_hook(generic_match_delete);
 236
 237         route_map_set_metric_hook(generic_set_add);
 238         route_map_no_set_metric_hook(generic_set_delete);
 239
 240         route_map_install_match(&route_match_ip_address_cmd);
 241         route_map_install_match(&route_match_ip_address_prefix_list_cmd);
 242         route_map_install_match(&route_match_ipv6_address_cmd);
 243         route_map_install_match(&route_match_ipv6_address_prefix_list_cmd);
 244         route_map_install_set(&route_set_metric_cmd);
 245 }