Annotation of embedaddon/quagga/lib/routemap.h, revision 1.1.1.3

1.1       misho       1: /* Route map function.
                      2:  * Copyright (C) 1998 Kunihiro Ishiguro
                      3:  *
                      4:  * This file is part of GNU Zebra.
                      5:  *
                      6:  * GNU Zebra 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
                      8:  * Free Software Foundation; either version 2, or (at your option) any
                      9:  * later version.
                     10:  *
                     11:  * GNU Zebra is distributed in the hope that it will be useful, but
                     12:  * WITHOUT ANY WARRANTY; without even the implied warranty of
                     13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     14:  * General Public License for more details.
                     15:  *
                     16:  * You should have received a copy of the GNU General Public License
                     17:  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
                     18:  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
                     19:  * 02111-1307, USA.  
                     20:  */
                     21: 
                     22: #ifndef _ZEBRA_ROUTEMAP_H
                     23: #define _ZEBRA_ROUTEMAP_H
                     24: 
                     25: /* Route map's type. */
                     26: enum route_map_type
                     27: {
                     28:   RMAP_PERMIT,
                     29:   RMAP_DENY,
                     30:   RMAP_ANY
                     31: };
                     32: 
                     33: typedef enum 
                     34: {
                     35:   RMAP_MATCH,
                     36:   RMAP_DENYMATCH,
                     37:   RMAP_NOMATCH,
                     38:   RMAP_ERROR,
                     39:   RMAP_OKAY
                     40: } route_map_result_t;
                     41: 
                     42: typedef enum
                     43: {
                     44:   RMAP_RIP,
                     45:   RMAP_RIPNG,
1.1.1.2   misho      46:   RMAP_BABEL,
1.1       misho      47:   RMAP_OSPF,
                     48:   RMAP_OSPF6,
                     49:   RMAP_BGP,
1.1.1.3 ! misho      50:   RMAP_ZEBRA,
        !            51:   RMAP_ISIS,
1.1       misho      52: } route_map_object_t;
                     53: 
                     54: typedef enum
                     55: {
                     56:   RMAP_EXIT,
                     57:   RMAP_GOTO,
                     58:   RMAP_NEXT
                     59: } route_map_end_t;
                     60: 
                     61: typedef enum
                     62: {
                     63:   RMAP_EVENT_SET_ADDED,
                     64:   RMAP_EVENT_SET_DELETED,
                     65:   RMAP_EVENT_SET_REPLACED,
                     66:   RMAP_EVENT_MATCH_ADDED,
                     67:   RMAP_EVENT_MATCH_DELETED,
                     68:   RMAP_EVENT_MATCH_REPLACED,
                     69:   RMAP_EVENT_INDEX_ADDED,
                     70:   RMAP_EVENT_INDEX_DELETED
                     71: } route_map_event_t;
                     72: 
                     73: /* Depth limit in RMAP recursion using RMAP_CALL. */
                     74: #define RMAP_RECURSION_LIMIT      10
                     75: 
                     76: /* Route map rule structure for matching and setting. */
                     77: struct route_map_rule_cmd
                     78: {
                     79:   /* Route map rule name (e.g. as-path, metric) */
                     80:   const char *str;
                     81: 
                     82:   /* Function for value set or match. */
                     83:   route_map_result_t (*func_apply)(void *, struct prefix *, 
                     84:                                   route_map_object_t, void *);
                     85: 
                     86:   /* Compile argument and return result as void *. */
                     87:   void *(*func_compile)(const char *);
                     88: 
                     89:   /* Free allocated value by func_compile (). */
                     90:   void (*func_free)(void *);
                     91: };
                     92: 
                     93: /* Route map apply error. */
                     94: enum
                     95: {
                     96:   /* Route map rule is missing. */
                     97:   RMAP_RULE_MISSING = 1,
                     98: 
                     99:   /* Route map rule can't compile */
                    100:   RMAP_COMPILE_ERROR
                    101: };
                    102: 
                    103: /* Route map rule list. */
                    104: struct route_map_rule_list
                    105: {
                    106:   struct route_map_rule *head;
                    107:   struct route_map_rule *tail;
                    108: };
                    109: 
                    110: /* Route map index structure. */
                    111: struct route_map_index
                    112: {
                    113:   struct route_map *map;
                    114:   char *description;
                    115: 
                    116:   /* Preference of this route map rule. */
                    117:   int pref;
                    118: 
                    119:   /* Route map type permit or deny. */
                    120:   enum route_map_type type;                    
                    121: 
                    122:   /* Do we follow old rules, or hop forward? */
                    123:   route_map_end_t exitpolicy;
                    124: 
                    125:   /* If we're using "GOTO", to where do we go? */
                    126:   int nextpref;
                    127: 
                    128:   /* If we're using "CALL", to which route-map do ew go? */
                    129:   char *nextrm;
                    130: 
                    131:   /* Matching rule list. */
                    132:   struct route_map_rule_list match_list;
                    133:   struct route_map_rule_list set_list;
                    134: 
                    135:   /* Make linked list. */
                    136:   struct route_map_index *next;
                    137:   struct route_map_index *prev;
                    138: };
                    139: 
                    140: /* Route map list structure. */
                    141: struct route_map
                    142: {
                    143:   /* Name of route map. */
                    144:   char *name;
                    145: 
                    146:   /* Route map's rule. */
                    147:   struct route_map_index *head;
                    148:   struct route_map_index *tail;
                    149: 
                    150:   /* Make linked list. */
                    151:   struct route_map *next;
                    152:   struct route_map *prev;
                    153: };
                    154: 
                    155: /* Prototypes. */
                    156: extern void route_map_init (void);
                    157: extern void route_map_init_vty (void);
                    158: extern void route_map_finish (void);
                    159: 
                    160: /* Add match statement to route map. */
                    161: extern int route_map_add_match (struct route_map_index *index,
                    162:                                const char *match_name,
                    163:                                const char *match_arg);
                    164: 
                    165: /* Delete specified route match rule. */
                    166: extern int route_map_delete_match (struct route_map_index *index,
                    167:                                   const char *match_name,
                    168:                                   const char *match_arg);
                    169: 
                    170: /* Add route-map set statement to the route map. */
                    171: extern int route_map_add_set (struct route_map_index *index, 
                    172:                              const char *set_name,
                    173:                              const char *set_arg);
                    174: 
                    175: /* Delete route map set rule. */
                    176: extern int route_map_delete_set (struct route_map_index *index,
                    177:                                  const char *set_name,
                    178:                                  const char *set_arg);
                    179: 
                    180: /* Install rule command to the match list. */
                    181: extern void route_map_install_match (struct route_map_rule_cmd *cmd);
                    182: 
                    183: /* Install rule command to the set list. */
                    184: extern void route_map_install_set (struct route_map_rule_cmd *cmd);
                    185: 
                    186: /* Lookup route map by name. */
                    187: extern struct route_map * route_map_lookup_by_name (const char *name);
                    188: 
                    189: /* Apply route map to the object. */
                    190: extern route_map_result_t route_map_apply (struct route_map *map,
                    191:                                            struct prefix *,
                    192:                                            route_map_object_t object_type,
                    193:                                            void *object);
                    194: 
                    195: extern void route_map_add_hook (void (*func) (const char *));
                    196: extern void route_map_delete_hook (void (*func) (const char *));
                    197: extern void route_map_event_hook (void (*func) (route_map_event_t, const char *));
                    198: 
                    199: #endif /* _ZEBRA_ROUTEMAP_H */

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