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Annotation of embedaddon/bird2/proto/static/static.h, revision 1.1.1.1

1.1       misho       1: /*
                      2:  *     BIRD -- Static Route Generator
                      3:  *
                      4:  *     (c) 1998--2000 Martin Mares <mj@ucw.cz>
                      5:  *
                      6:  *     Can be freely distributed and used under the terms of the GNU GPL.
                      7:  */
                      8: 
                      9: #ifndef _BIRD_STATIC_H_
                     10: #define _BIRD_STATIC_H_
                     11: 
                     12: #include "nest/route.h"
                     13: #include "nest/bfd.h"
                     14: #include "lib/buffer.h"
                     15: 
                     16: struct static_config {
                     17:   struct proto_config c;
                     18:   list routes;                         /* List of static routes (struct static_route) */
                     19:   int check_link;                      /* Whether iface link state is used */
                     20:   struct rtable_config *igp_table_ip4; /* Table for recursive IPv4 next hop lookups */
                     21:   struct rtable_config *igp_table_ip6; /* Table for recursive IPv6 next hop lookups */
                     22: };
                     23: 
                     24: struct static_proto {
                     25:   struct proto p;
                     26: 
                     27:   struct event *event;                 /* Event for announcing updated routes */
                     28:   BUFFER_(struct static_route *) marked; /* Routes marked for reannouncement */
                     29:   rtable *igp_table_ip4;               /* Table for recursive IPv4 next hop lookups */
                     30:   rtable *igp_table_ip6;               /* Table for recursive IPv6 next hop lookups */
                     31: };
                     32: 
                     33: struct static_route {
                     34:   node n;
                     35:   net_addr *net;                       /* Network we route */
                     36:   ip_addr via;                         /* Destination router */
                     37:   struct iface *iface;                 /* Destination iface, for link-local vias or device routes */
                     38:   struct neighbor *neigh;              /* Associated neighbor entry */
                     39:   struct static_route *chain;          /* Next for the same neighbor */
                     40:   struct static_route *mp_head;                /* First nexthop of this route */
                     41:   struct static_route *mp_next;                /* Nexthops for multipath routes */
                     42:   struct f_line *cmds;                 /* List of commands for setting attributes */
                     43:   byte dest;                           /* Destination type (RTD_*) */
                     44:   byte state;                          /* State of route announcement (SRS_*) */
                     45:   byte active;                         /* Next hop is active (nbr/iface/BFD available) */
                     46:   byte onlink;                         /* Gateway is onlink regardless of IP ranges */
                     47:   byte weight;                         /* Multipath next hop weight */
                     48:   byte use_bfd;                                /* Configured to use BFD */
                     49:   struct bfd_request *bfd_req;         /* BFD request, if BFD is used */
                     50:   mpls_label_stack *mls;               /* MPLS label stack; may be NULL */
                     51: };
                     52: 
                     53: /*
                     54:  * Note that data fields neigh, chain, state, active and bfd_req are runtime
                     55:  * data, not real configuration data. Must be handled carefully.
                     56:  *
                     57:  * Regular (i.e. dest == RTD_UNICAST) routes use static_route structure for
                     58:  * additional next hops (fields mp_head, mp_next). Note that 'state' is for
                     59:  * whole route, while 'active' is for each next hop. Also note that fields
                     60:  * mp_head, mp_next, active are zero for other kinds of routes.
                     61:  */
                     62: 
                     63: #define RTDX_RECURSIVE 0x7f            /* Phony dest value for recursive routes */
                     64: 
                     65: #define SRS_DOWN       0               /* Route is not announced */
                     66: #define SRS_CLEAN      1               /* Route is active and announced */
                     67: #define SRS_DIRTY      2               /* Route changed since announcement */
                     68: 
                     69: void static_show(struct proto *);
                     70: 
                     71: #endif