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bird2 ver 2.0.7

    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