/* $OpenBSD: eigrpd.h,v 1.26 2021/01/19 10:53:25 claudio Exp $ */ /* * Copyright (c) 2015 Renato Westphal * Copyright (c) 2004 Esben Norby * Copyright (c) 2003, 2004 Henning Brauer * * 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 _EIGRPD_H_ #define _EIGRPD_H_ #include #include #include #include #include #include #include #include "eigrp.h" #define CONF_FILE "/etc/eigrpd.conf" #define EIGRPD_SOCKET "/var/run/eigrpd.sock" #define EIGRPD_USER "_eigrpd" #define EIGRPD_OPT_VERBOSE 0x00000001 #define EIGRPD_OPT_VERBOSE2 0x00000002 #define EIGRPD_OPT_NOACTION 0x00000004 #define NBR_IDSELF 1 #define NBR_CNTSTART (NBR_IDSELF + 1) #define READ_BUF_SIZE 65535 #define PKG_DEF_SIZE 512 /* compromise */ #define RT_BUF_SIZE 16384 #define MAX_RTSOCK_BUF (2 * 1024 * 1024) #define F_EIGRPD_INSERTED 0x0001 #define F_KERNEL 0x0002 #define F_CONNECTED 0x0004 #define F_STATIC 0x0008 #define F_DYNAMIC 0x0010 #define F_DOWN 0x0020 #define F_REJECT 0x0040 #define F_BLACKHOLE 0x0080 #define F_REDISTRIBUTED 0x0100 #define F_CTL_EXTERNAL 0x0200 /* only used by eigrpctl */ #define F_CTL_ACTIVE 0x0400 #define F_CTL_ALLLINKS 0x0800 struct imsgev { struct imsgbuf ibuf; void (*handler)(int, short, void *); struct event ev; short events; }; enum imsg_type { IMSG_CTL_RELOAD, IMSG_CTL_SHOW_INTERFACE, IMSG_CTL_SHOW_NBR, IMSG_CTL_SHOW_TOPOLOGY, IMSG_CTL_SHOW_STATS, IMSG_CTL_CLEAR_NBR, IMSG_CTL_FIB_COUPLE, IMSG_CTL_FIB_DECOUPLE, IMSG_CTL_IFACE, IMSG_CTL_KROUTE, IMSG_CTL_IFINFO, IMSG_CTL_END, IMSG_CTL_LOG_VERBOSE, IMSG_KROUTE_CHANGE, IMSG_KROUTE_DELETE, IMSG_NONE, IMSG_IFINFO, IMSG_IFDOWN, IMSG_NEWADDR, IMSG_DELADDR, IMSG_NETWORK_ADD, IMSG_NETWORK_DEL, IMSG_NEIGHBOR_UP, IMSG_NEIGHBOR_DOWN, IMSG_RECV_UPDATE_INIT, IMSG_RECV_UPDATE, IMSG_RECV_QUERY, IMSG_RECV_REPLY, IMSG_RECV_SIAQUERY, IMSG_RECV_SIAREPLY, IMSG_SEND_UPDATE, IMSG_SEND_QUERY, IMSG_SEND_REPLY, IMSG_SEND_MUPDATE, IMSG_SEND_MQUERY, IMSG_SEND_UPDATE_END, IMSG_SEND_REPLY_END, IMSG_SEND_SIAQUERY_END, IMSG_SEND_SIAREPLY_END, IMSG_SEND_MUPDATE_END, IMSG_SEND_MQUERY_END, IMSG_SOCKET_IPC, IMSG_RECONF_CONF, IMSG_RECONF_IFACE, IMSG_RECONF_INSTANCE, IMSG_RECONF_EIGRP_IFACE, IMSG_RECONF_END }; /* forward declarations */ struct eigrp_iface; RB_HEAD(iface_id_head, eigrp_iface); struct nbr; RB_HEAD(nbr_addr_head, nbr); RB_HEAD(nbr_pid_head, nbr); struct rde_nbr; RB_HEAD(rde_nbr_head, rde_nbr); struct rt_node; RB_HEAD(rt_tree, rt_node); union eigrpd_addr { struct in_addr v4; struct in6_addr v6; }; #define IN6_IS_SCOPE_EMBED(a) \ ((IN6_IS_ADDR_LINKLOCAL(a)) || \ (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \ (IN6_IS_ADDR_MC_INTFACELOCAL(a))) /* interface types */ enum iface_type { IF_TYPE_POINTOPOINT, IF_TYPE_BROADCAST }; struct if_addr { TAILQ_ENTRY(if_addr) entry; int af; union eigrpd_addr addr; uint8_t prefixlen; union eigrpd_addr dstbrd; }; TAILQ_HEAD(if_addr_head, if_addr); struct iface { TAILQ_ENTRY(iface) entry; TAILQ_HEAD(, eigrp_iface) ei_list; unsigned int ifindex; unsigned int rdomain; char name[IF_NAMESIZE]; struct if_addr_head addr_list; struct in6_addr linklocal; int mtu; enum iface_type type; uint8_t if_type; uint64_t baudrate; uint16_t flags; uint8_t linkstate; uint8_t group_count_v4; uint8_t group_count_v6; }; enum route_type { EIGRP_ROUTE_INTERNAL, EIGRP_ROUTE_EXTERNAL }; /* routing information advertised by update/query/reply messages */ struct rinfo { int af; enum route_type type; union eigrpd_addr prefix; uint8_t prefixlen; union eigrpd_addr nexthop; struct classic_metric metric; struct classic_emetric emetric; }; struct rinfo_entry { TAILQ_ENTRY(rinfo_entry) entry; struct rinfo rinfo; }; TAILQ_HEAD(rinfo_head, rinfo_entry); /* interface states */ #define IF_STA_DOWN 0x01 #define IF_STA_ACTIVE 0x02 struct summary_addr { TAILQ_ENTRY(summary_addr) entry; union eigrpd_addr prefix; uint8_t prefixlen; }; struct eigrp_iface { RB_ENTRY(eigrp_iface) id_tree; TAILQ_ENTRY(eigrp_iface) e_entry; TAILQ_ENTRY(eigrp_iface) i_entry; struct eigrp *eigrp; struct iface *iface; int state; uint32_t ifaceid; struct event hello_timer; uint32_t delay; uint32_t bandwidth; uint16_t hello_holdtime; uint16_t hello_interval; uint8_t splithorizon; uint8_t passive; time_t uptime; TAILQ_HEAD(, nbr) nbr_list; struct nbr *self; struct rinfo_head update_list; /* multicast updates */ struct rinfo_head query_list; /* multicast queries */ TAILQ_HEAD(, summary_addr) summary_list; }; RB_PROTOTYPE(iface_id_head, eigrp_iface, id_tree, iface_id_compare) #define INADDRSZ 4 #define IN6ADDRSZ 16 struct seq_addr_entry { TAILQ_ENTRY(seq_addr_entry) entry; int af; union eigrpd_addr addr; }; TAILQ_HEAD(seq_addr_head, seq_addr_entry); #define REDIST_STATIC 0x01 #define REDIST_RIP 0x02 #define REDIST_OSPF 0x04 #define REDIST_CONNECTED 0x08 #define REDIST_DEFAULT 0x10 #define REDIST_ADDR 0x20 #define REDIST_NO 0x40 struct redist_metric { uint32_t bandwidth; uint32_t delay; uint8_t reliability; uint8_t load; uint16_t mtu; }; struct redistribute { SIMPLEQ_ENTRY(redistribute) entry; uint8_t type; int af; union eigrpd_addr addr; uint8_t prefixlen; struct redist_metric *metric; struct { uint32_t as; uint32_t metric; uint32_t tag; } emetric; }; SIMPLEQ_HEAD(redist_list, redistribute); struct eigrp_stats { uint32_t hellos_sent; uint32_t hellos_recv; uint32_t updates_sent; uint32_t updates_recv; uint32_t queries_sent; uint32_t queries_recv; uint32_t replies_sent; uint32_t replies_recv; uint32_t acks_sent; uint32_t acks_recv; uint32_t squeries_sent; uint32_t squeries_recv; uint32_t sreplies_sent; uint32_t sreplies_recv; }; /* eigrp instance */ struct eigrp { TAILQ_ENTRY(eigrp) entry; int af; uint16_t as; uint8_t kvalues[6]; uint16_t active_timeout; uint8_t maximum_hops; uint8_t maximum_paths; uint8_t variance; struct redist_metric *dflt_metric; struct redist_list redist_list; TAILQ_HEAD(, eigrp_iface) ei_list; struct nbr_addr_head nbrs; struct rde_nbr *rnbr_redist; struct rde_nbr *rnbr_summary; struct rt_tree topology; uint32_t seq_num; struct eigrp_stats stats; }; /* eigrp_conf */ enum eigrpd_process { PROC_MAIN, PROC_EIGRP_ENGINE, PROC_RDE_ENGINE }; struct eigrpd_conf { struct in_addr rtr_id; unsigned int rdomain; uint8_t fib_priority_internal; uint8_t fib_priority_external; uint8_t fib_priority_summary; TAILQ_HEAD(, iface) iface_list; TAILQ_HEAD(, eigrp) instances; int flags; #define EIGRPD_FLAG_NO_FIB_UPDATE 0x0001 }; struct eigrpd_global { int cmd_opts; time_t uptime; int eigrp_socket_v4; int eigrp_socket_v6; struct in_addr mcast_addr_v4; struct in6_addr mcast_addr_v6; }; extern struct eigrpd_global global; /* kroute */ struct kroute { int af; union eigrpd_addr prefix; uint8_t prefixlen; union eigrpd_addr nexthop; unsigned short ifindex; uint8_t priority; uint16_t flags; }; struct kaddr { unsigned short ifindex; int af; union eigrpd_addr addr; uint8_t prefixlen; union eigrpd_addr dstbrd; }; struct kif { char ifname[IF_NAMESIZE]; unsigned short ifindex; int flags; uint8_t link_state; int mtu; unsigned int rdomain; uint8_t if_type; uint64_t baudrate; uint8_t nh_reachable; /* for nexthop verification */ }; /* control data structures */ struct ctl_iface { int af; uint16_t as; char name[IF_NAMESIZE]; unsigned int ifindex; union eigrpd_addr addr; uint8_t prefixlen; uint16_t flags; uint8_t linkstate; int mtu; enum iface_type type; uint8_t if_type; uint64_t baudrate; uint32_t delay; uint32_t bandwidth; uint16_t hello_holdtime; uint16_t hello_interval; uint8_t splithorizon; uint8_t passive; time_t uptime; int nbr_cnt; }; struct ctl_nbr { int af; uint16_t as; char ifname[IF_NAMESIZE]; union eigrpd_addr addr; uint16_t hello_holdtime; time_t uptime; }; struct ctl_rt { int af; uint16_t as; union eigrpd_addr prefix; uint8_t prefixlen; enum route_type type; union eigrpd_addr nexthop; char ifname[IF_NAMESIZE]; uint32_t distance; uint32_t rdistance; uint32_t fdistance; int state; uint8_t flags; struct { uint32_t delay; uint32_t bandwidth; uint32_t mtu; uint8_t hop_count; uint8_t reliability; uint8_t load; } metric; struct classic_emetric emetric; }; #define F_CTL_RT_FIRST 0x01 #define F_CTL_RT_SUCCESSOR 0x02 #define F_CTL_RT_FSUCCESSOR 0x04 struct ctl_show_topology_req { int af; union eigrpd_addr prefix; uint8_t prefixlen; uint16_t flags; }; struct ctl_stats { int af; uint16_t as; struct eigrp_stats stats; }; #define min(x,y) ((x) <= (y) ? (x) : (y)) #define max(x,y) ((x) > (y) ? (x) : (y)) extern struct eigrpd_conf *eigrpd_conf; extern struct iface_id_head ifaces_by_id; /* parse.y */ struct eigrpd_conf *parse_config(char *); int cmdline_symset(char *); /* in_cksum.c */ uint16_t in_cksum(void *, size_t); /* kroute.c */ int kif_init(void); int kr_init(int, unsigned int); void kif_redistribute(void); int kr_change(struct kroute *); int kr_delete(struct kroute *); void kr_shutdown(void); void kr_fib_couple(void); void kr_fib_decouple(void); void kr_show_route(struct imsg *); void kr_ifinfo(char *, pid_t); struct kif *kif_findname(char *); void kif_clear(void); /* util.c */ uint8_t mask2prefixlen(in_addr_t); uint8_t mask2prefixlen6(struct sockaddr_in6 *); in_addr_t prefixlen2mask(uint8_t); struct in6_addr *prefixlen2mask6(uint8_t); void eigrp_applymask(int, union eigrpd_addr *, const union eigrpd_addr *, int); int eigrp_addrcmp(int, const union eigrpd_addr *, const union eigrpd_addr *); int eigrp_addrisset(int, const union eigrpd_addr *); int eigrp_prefixcmp(int, const union eigrpd_addr *, const union eigrpd_addr *, uint8_t); int bad_addr_v4(struct in_addr); int bad_addr_v6(struct in6_addr *); int bad_addr(int, union eigrpd_addr *); void embedscope(struct sockaddr_in6 *); void recoverscope(struct sockaddr_in6 *); void addscope(struct sockaddr_in6 *, uint32_t); void clearscope(struct in6_addr *); void sa2addr(struct sockaddr *, int *, union eigrpd_addr *); /* eigrpd.c */ int main_imsg_compose_eigrpe(int, pid_t, void *, uint16_t); int main_imsg_compose_rde(int, pid_t, void *, uint16_t); void imsg_event_add(struct imsgev *); int imsg_compose_event(struct imsgev *, uint16_t, uint32_t, pid_t, int, void *, uint16_t); struct eigrp *eigrp_find(struct eigrpd_conf *, int, uint16_t); void merge_config(struct eigrpd_conf *, struct eigrpd_conf *, enum eigrpd_process); struct eigrpd_conf *config_new_empty(void); void config_clear(struct eigrpd_conf *, enum eigrpd_process); /* printconf.c */ void print_config(struct eigrpd_conf *); /* logmsg.c */ const char *log_in6addr(const struct in6_addr *); const char *log_in6addr_scope(const struct in6_addr *, unsigned int); const char *log_sockaddr(void *); const char *log_addr(int, union eigrpd_addr *); const char *log_prefix(struct rt_node *); const char *log_route_origin(int, struct rde_nbr *); const char *opcode_name(uint8_t); const char *af_name(int); const char *if_type_name(enum iface_type); const char *dual_state_name(int); const char *ext_proto_name(int); #endif /* _EIGRPD_H_ */