/* $OpenBSD: lde.h,v 1.50 2017/03/04 00:21:48 renato Exp $ */ /* * Copyright (c) 2013, 2016 Renato Westphal * Copyright (c) 2009 Michele Marchetto * Copyright (c) 2004, 2005 Esben Norby * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef _LDE_H_ #define _LDE_H_ #include #include #include enum fec_type { FEC_TYPE_IPV4, FEC_TYPE_IPV6, FEC_TYPE_PWID }; struct fec { RB_ENTRY(fec) entry; enum fec_type type; union { struct { struct in_addr prefix; uint8_t prefixlen; } ipv4; struct { struct in6_addr prefix; uint8_t prefixlen; } ipv6; struct { uint16_t type; uint32_t pwid; struct in_addr lsr_id; } pwid; } u; }; RB_HEAD(fec_tree, fec); RB_PROTOTYPE(fec_tree, fec, entry, fec_compare) /* request entries */ struct lde_req { struct fec fec; uint32_t msg_id; }; /* mapping entries */ struct lde_map { struct fec fec; LIST_ENTRY(lde_map) entry; struct lde_nbr *nexthop; struct map map; }; /* withdraw entries */ struct lde_wdraw { struct fec fec; uint32_t label; }; /* Addresses belonging to neighbor */ struct lde_addr { TAILQ_ENTRY(lde_addr) entry; int af; union ldpd_addr addr; }; /* just the info LDE needs */ struct lde_nbr { RB_ENTRY(lde_nbr) entry; uint32_t peerid; struct in_addr id; int v4_enabled; /* announce/process v4 msgs */ int v6_enabled; /* announce/process v6 msgs */ int flags; /* capabilities */ struct fec_tree recv_req; struct fec_tree sent_req; struct fec_tree recv_map; struct fec_tree sent_map; struct fec_tree sent_wdraw; TAILQ_HEAD(, lde_addr) addr_list; }; RB_HEAD(nbr_tree, lde_nbr); RB_PROTOTYPE(nbr_tree, lde_nbr, entry, lde_nbr_compare) struct fec_nh { LIST_ENTRY(fec_nh) entry; int af; union ldpd_addr nexthop; uint32_t remote_label; uint8_t priority; }; struct fec_node { struct fec fec; LIST_HEAD(, fec_nh) nexthops; /* fib nexthops */ LIST_HEAD(, lde_map) downstream; /* recv mappings */ LIST_HEAD(, lde_map) upstream; /* sent mappings */ uint32_t local_label; void *data; /* fec specific data */ }; #define LDE_GC_INTERVAL 300 extern struct ldpd_conf *ldeconf; extern struct fec_tree ft; extern struct nbr_tree lde_nbrs; extern struct event gc_timer; /* lde.c */ void lde(int, int); int lde_imsg_compose_ldpe(int, uint32_t, pid_t, void *, uint16_t); uint32_t lde_assign_label(void); void lde_send_change_klabel(struct fec_node *, struct fec_nh *); void lde_send_delete_klabel(struct fec_node *, struct fec_nh *); void lde_fec2map(struct fec *, struct map *); void lde_map2fec(struct map *, struct in_addr, struct fec *); void lde_send_labelmapping(struct lde_nbr *, struct fec_node *, int); void lde_send_labelwithdraw(struct lde_nbr *, struct fec_node *, struct map *, struct status_tlv *); void lde_send_labelwithdraw_wcard(struct lde_nbr *, uint32_t); void lde_send_labelwithdraw_twcard_prefix(struct lde_nbr *, uint16_t, uint32_t); void lde_send_labelwithdraw_twcard_pwid(struct lde_nbr *, uint16_t, uint32_t); void lde_send_labelwithdraw_pwid_wcard(struct lde_nbr *, uint16_t, uint32_t); void lde_send_labelrelease(struct lde_nbr *, struct fec_node *, struct map *, uint32_t); void lde_send_notification(struct lde_nbr *, uint32_t, uint32_t, uint16_t); void lde_send_notification_eol_prefix(struct lde_nbr *, int); void lde_send_notification_eol_pwid(struct lde_nbr *, uint16_t); struct lde_nbr *lde_nbr_find_by_lsrid(struct in_addr); struct lde_nbr *lde_nbr_find_by_addr(int, union ldpd_addr *); struct lde_map *lde_map_add(struct lde_nbr *, struct fec_node *, int); void lde_map_del(struct lde_nbr *, struct lde_map *, int); struct lde_req *lde_req_add(struct lde_nbr *, struct fec *, int); void lde_req_del(struct lde_nbr *, struct lde_req *, int); struct lde_wdraw *lde_wdraw_add(struct lde_nbr *, struct fec_node *); void lde_wdraw_del(struct lde_nbr *, struct lde_wdraw *); void lde_change_egress_label(int, int); struct lde_addr *lde_address_find(struct lde_nbr *, int, union ldpd_addr *); /* lde_lib.c */ void fec_init(struct fec_tree *); struct fec *fec_find(struct fec_tree *, struct fec *); int fec_insert(struct fec_tree *, struct fec *); int fec_remove(struct fec_tree *, struct fec *); void fec_clear(struct fec_tree *, void (*)(void *)); void rt_dump(pid_t); void fec_snap(struct lde_nbr *); void fec_tree_clear(void); struct fec_nh *fec_nh_find(struct fec_node *, int, union ldpd_addr *, uint8_t); uint32_t egress_label(enum fec_type); void lde_kernel_insert(struct fec *, int, union ldpd_addr *, uint8_t, int, void *); void lde_kernel_remove(struct fec *, int, union ldpd_addr *, uint8_t); void lde_check_mapping(struct map *, struct lde_nbr *); void lde_check_request(struct map *, struct lde_nbr *); void lde_check_request_wcard(struct map *, struct lde_nbr *); void lde_check_release(struct map *, struct lde_nbr *); void lde_check_release_wcard(struct map *, struct lde_nbr *); void lde_check_withdraw(struct map *, struct lde_nbr *); void lde_check_withdraw_wcard(struct map *, struct lde_nbr *); int lde_wildcard_apply(struct map *, struct fec *, struct lde_map *); void lde_gc_timer(int, short, void *); void lde_gc_start_timer(void); void lde_gc_stop_timer(void); /* l2vpn.c */ struct l2vpn *l2vpn_new(const char *); struct l2vpn *l2vpn_find(struct ldpd_conf *, const char *); void l2vpn_del(struct l2vpn *); void l2vpn_init(struct l2vpn *); void l2vpn_exit(struct l2vpn *); struct l2vpn_if *l2vpn_if_new(struct l2vpn *, struct kif *); struct l2vpn_if *l2vpn_if_find(struct l2vpn *, unsigned int); void l2vpn_if_update(struct l2vpn_if *); struct l2vpn_pw *l2vpn_pw_new(struct l2vpn *, struct kif *); struct l2vpn_pw *l2vpn_pw_find(struct l2vpn *, unsigned int); void l2vpn_pw_init(struct l2vpn_pw *); void l2vpn_pw_exit(struct l2vpn_pw *); void l2vpn_pw_reset(struct l2vpn_pw *); int l2vpn_pw_ok(struct l2vpn_pw *, struct fec_nh *); int l2vpn_pw_negotiate(struct lde_nbr *, struct fec_node *, struct map *); void l2vpn_send_pw_status(struct lde_nbr *, uint32_t, struct fec *); void l2vpn_send_pw_status_wcard(struct lde_nbr *, uint32_t, uint16_t, uint32_t); void l2vpn_recv_pw_status(struct lde_nbr *, struct notify_msg *); void l2vpn_recv_pw_status_wcard(struct lde_nbr *, struct notify_msg *); void l2vpn_sync_pws(int, union ldpd_addr *); void l2vpn_pw_ctl(pid_t); void l2vpn_binding_ctl(pid_t); #endif /* _LDE_H_ */