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e132dea064
Use the route type and instance instead of the route distance to identify MPLS FTNs. This is a more robust approach since the routing daemons can modify the distance of their announced routes via configuration, which can cause inconsistencies. Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
248 lines
8.3 KiB
C
248 lines
8.3 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org>
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* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
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* Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _LDE_H_
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#define _LDE_H_
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#include "queue.h"
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#include "openbsd-tree.h"
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#include "if.h"
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enum fec_type {
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FEC_TYPE_IPV4,
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FEC_TYPE_IPV6,
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FEC_TYPE_PWID
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};
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struct fec {
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RB_ENTRY(fec) entry;
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enum fec_type type;
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union {
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struct {
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struct in_addr prefix;
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uint8_t prefixlen;
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} ipv4;
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struct {
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struct in6_addr prefix;
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uint8_t prefixlen;
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} ipv6;
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struct {
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uint16_t type;
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uint32_t pwid;
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struct in_addr lsr_id;
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} pwid;
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} u;
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};
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RB_HEAD(fec_tree, fec);
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RB_PROTOTYPE(fec_tree, fec, entry, fec_compare)
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/* request entries */
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struct lde_req {
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struct fec fec;
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uint32_t msg_id;
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};
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/* mapping entries */
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struct lde_map {
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struct fec fec;
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struct lde_map_head *head; /* fec_node's upstream/downstream */
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RB_ENTRY(lde_map) entry;
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struct lde_nbr *nexthop;
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struct map map;
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};
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RB_HEAD(lde_map_head, lde_map);
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RB_PROTOTYPE(lde_map_head, lde_map, entry, lde_map_cmp);
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/* withdraw entries */
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struct lde_wdraw {
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struct fec fec;
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uint32_t label;
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};
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/* Addresses belonging to neighbor */
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struct lde_addr {
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TAILQ_ENTRY(lde_addr) entry;
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int af;
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union ldpd_addr addr;
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};
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/* just the info LDE needs */
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struct lde_nbr {
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RB_ENTRY(lde_nbr) entry;
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uint32_t peerid;
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struct in_addr id;
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int v4_enabled; /* announce/process v4 msgs */
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int v6_enabled; /* announce/process v6 msgs */
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int flags; /* capabilities */
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struct fec_tree recv_req;
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struct fec_tree sent_req;
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struct fec_tree recv_map;
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struct fec_tree sent_map;
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struct fec_tree sent_map_pending;
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struct fec_tree sent_wdraw;
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TAILQ_HEAD(, lde_addr) addr_list;
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};
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RB_HEAD(nbr_tree, lde_nbr);
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RB_PROTOTYPE(nbr_tree, lde_nbr, entry, lde_nbr_compare)
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struct fec_nh {
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LIST_ENTRY(fec_nh) entry;
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int af;
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union ldpd_addr nexthop;
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ifindex_t ifindex;
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uint32_t remote_label;
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uint8_t route_type;
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unsigned short route_instance;
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uint8_t flags;
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};
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#define F_FEC_NH_NEW 0x01
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#define F_FEC_NH_CONNECTED 0x02
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struct fec_node {
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struct fec fec;
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LIST_HEAD(, fec_nh) nexthops; /* fib nexthops */
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struct lde_map_head downstream; /* recv mappings */
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struct lde_map_head upstream; /* sent mappings */
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uint32_t local_label;
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void *data; /* fec specific data */
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};
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#define CHUNK_SIZE 64
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struct label_chunk {
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uint32_t start;
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uint32_t end;
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uint64_t used_mask;
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};
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#define LDE_GC_INTERVAL 300
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extern struct ldpd_conf *ldeconf;
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extern struct fec_tree ft;
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extern struct nbr_tree lde_nbrs;
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extern struct thread *gc_timer;
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/* lde.c */
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void lde(void);
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void lde_init(struct ldpd_init *);
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int lde_imsg_compose_parent(int, pid_t, void *, uint16_t);
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void lde_imsg_compose_parent_sync(int, pid_t, void *, uint16_t);
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int lde_imsg_compose_ldpe(int, uint32_t, pid_t, void *, uint16_t);
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int lde_acl_check(char *, int, union ldpd_addr *, uint8_t);
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uint32_t lde_update_label(struct fec_node *);
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void lde_free_label(uint32_t label);
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void lde_send_change_klabel(struct fec_node *, struct fec_nh *);
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void lde_send_delete_klabel(struct fec_node *, struct fec_nh *);
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void lde_fec2map(struct fec *, struct map *);
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void lde_map2fec(struct map *, struct in_addr, struct fec *);
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void lde_send_labelmapping(struct lde_nbr *, struct fec_node *,
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int);
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void lde_send_labelwithdraw(struct lde_nbr *, struct fec_node *,
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struct map *, struct status_tlv *);
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void lde_send_labelwithdraw_wcard(struct lde_nbr *, uint32_t);
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void lde_send_labelwithdraw_twcard_prefix(struct lde_nbr *,
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uint16_t, uint32_t);
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void lde_send_labelwithdraw_twcard_pwid(struct lde_nbr *, uint16_t,
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uint32_t);
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void lde_send_labelwithdraw_pwid_wcard(struct lde_nbr *, uint16_t,
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uint32_t);
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void lde_send_labelrelease(struct lde_nbr *, struct fec_node *,
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struct map *, uint32_t);
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void lde_send_notification(struct lde_nbr *, uint32_t, uint32_t,
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uint16_t);
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void lde_send_notification_eol_prefix(struct lde_nbr *, int);
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void lde_send_notification_eol_pwid(struct lde_nbr *, uint16_t);
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struct lde_nbr *lde_nbr_find_by_lsrid(struct in_addr);
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struct lde_nbr *lde_nbr_find_by_addr(int, union ldpd_addr *);
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struct lde_map *lde_map_add(struct lde_nbr *, struct fec_node *, int);
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void lde_map_del(struct lde_nbr *, struct lde_map *, int);
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struct fec *lde_map_pending_add(struct lde_nbr *, struct fec_node *);
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void lde_map_pending_del(struct lde_nbr *, struct fec *);
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struct lde_req *lde_req_add(struct lde_nbr *, struct fec *, int);
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void lde_req_del(struct lde_nbr *, struct lde_req *, int);
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struct lde_wdraw *lde_wdraw_add(struct lde_nbr *, struct fec_node *);
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void lde_wdraw_del(struct lde_nbr *, struct lde_wdraw *);
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void lde_change_egress_label(int);
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struct lde_addr *lde_address_find(struct lde_nbr *, int,
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union ldpd_addr *);
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/* lde_lib.c */
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void fec_init(struct fec_tree *);
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struct fec *fec_find(struct fec_tree *, struct fec *);
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int fec_insert(struct fec_tree *, struct fec *);
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int fec_remove(struct fec_tree *, struct fec *);
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void fec_clear(struct fec_tree *, void (*)(void *));
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void rt_dump(pid_t);
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void fec_snap(struct lde_nbr *);
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void fec_tree_clear(void);
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struct fec_nh *fec_nh_find(struct fec_node *, int, union ldpd_addr *,
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ifindex_t, uint8_t, unsigned short);
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void lde_kernel_insert(struct fec *, int, union ldpd_addr *,
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ifindex_t, uint8_t, unsigned short, int, void *);
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void lde_kernel_remove(struct fec *, int, union ldpd_addr *,
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ifindex_t, uint8_t, unsigned short);
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void lde_kernel_update(struct fec *);
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void lde_check_mapping(struct map *, struct lde_nbr *);
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void lde_check_request(struct map *, struct lde_nbr *);
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void lde_check_request_wcard(struct map *, struct lde_nbr *);
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void lde_check_release(struct map *, struct lde_nbr *);
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void lde_check_release_wcard(struct map *, struct lde_nbr *);
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void lde_check_withdraw(struct map *, struct lde_nbr *);
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void lde_check_withdraw_wcard(struct map *, struct lde_nbr *);
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int lde_wildcard_apply(struct map *, struct fec *,
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struct lde_map *);
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int lde_gc_timer(struct thread *);
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void lde_gc_start_timer(void);
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void lde_gc_stop_timer(void);
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/* l2vpn.c */
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struct l2vpn *l2vpn_new(const char *);
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struct l2vpn *l2vpn_find(struct ldpd_conf *, const char *);
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void l2vpn_del(struct l2vpn *);
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void l2vpn_init(struct l2vpn *);
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void l2vpn_exit(struct l2vpn *);
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struct l2vpn_if *l2vpn_if_new(struct l2vpn *, const char *);
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struct l2vpn_if *l2vpn_if_find(struct l2vpn *, const char *);
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void l2vpn_if_update_info(struct l2vpn_if *, struct kif *);
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void l2vpn_if_update(struct l2vpn_if *);
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struct l2vpn_pw *l2vpn_pw_new(struct l2vpn *, const char *);
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struct l2vpn_pw *l2vpn_pw_find(struct l2vpn *, const char *);
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struct l2vpn_pw *l2vpn_pw_find_active(struct l2vpn *, const char *);
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struct l2vpn_pw *l2vpn_pw_find_inactive(struct l2vpn *, const char *);
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void l2vpn_pw_update_info(struct l2vpn_pw *, struct kif *);
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void l2vpn_pw_init(struct l2vpn_pw *);
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void l2vpn_pw_exit(struct l2vpn_pw *);
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void l2vpn_pw_reset(struct l2vpn_pw *);
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int l2vpn_pw_ok(struct l2vpn_pw *, struct fec_nh *);
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int l2vpn_pw_negotiate(struct lde_nbr *, struct fec_node *,
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struct map *);
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void l2vpn_send_pw_status(struct lde_nbr *, uint32_t, struct fec *);
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void l2vpn_send_pw_status_wcard(struct lde_nbr *, uint32_t,
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uint16_t, uint32_t);
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void l2vpn_recv_pw_status(struct lde_nbr *, struct notify_msg *);
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void l2vpn_recv_pw_status_wcard(struct lde_nbr *,
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struct notify_msg *);
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int l2vpn_pw_status_update(struct zapi_pw_status *);
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void l2vpn_pw_ctl(pid_t);
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void l2vpn_binding_ctl(pid_t);
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#endif /* _LDE_H_ */
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