2 * Copyright (C) 2016 by Open Source Routing.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; see the file COPYING; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
35 #include "ldp_debug.h"
37 static void ifp2kif(struct interface
*, struct kif
*);
38 static void ifc2kaddr(struct interface
*, struct connected
*,
40 static int zebra_send_mpls_labels(int, struct kroute
*);
41 static int ldp_router_id_update(int, struct zclient
*, zebra_size_t
,
43 static int ldp_interface_add(int, struct zclient
*, zebra_size_t
,
45 static int ldp_interface_delete(int, struct zclient
*, zebra_size_t
,
47 static int ldp_interface_status_change(int command
, struct zclient
*,
48 zebra_size_t
, vrf_id_t
);
49 static int ldp_interface_address_add(int, struct zclient
*, zebra_size_t
,
51 static int ldp_interface_address_delete(int, struct zclient
*,
52 zebra_size_t
, vrf_id_t
);
53 static int ldp_zebra_read_route(int, struct zclient
*, zebra_size_t
,
55 static int ldp_zebra_read_pw_status_update(int, struct zclient
*,
56 zebra_size_t
, vrf_id_t
);
57 static void ldp_zebra_connected(struct zclient
*);
59 static struct zclient
*zclient
;
62 ifp2kif(struct interface
*ifp
, struct kif
*kif
)
64 memset(kif
, 0, sizeof(*kif
));
65 strlcpy(kif
->ifname
, ifp
->name
, sizeof(kif
->ifname
));
66 kif
->ifindex
= ifp
->ifindex
;
67 kif
->operative
= if_is_operative(ifp
);
68 if (ifp
->ll_type
== ZEBRA_LLT_ETHER
)
69 memcpy(kif
->mac
, ifp
->hw_addr
, ETH_ALEN
);
73 ifc2kaddr(struct interface
*ifp
, struct connected
*ifc
, struct kaddr
*ka
)
75 memset(ka
, 0, sizeof(*ka
));
76 strlcpy(ka
->ifname
, ifp
->name
, sizeof(ka
->ifname
));
77 ka
->ifindex
= ifp
->ifindex
;
78 ka
->af
= ifc
->address
->family
;
79 ka
->prefixlen
= ifc
->address
->prefixlen
;
83 ka
->addr
.v4
= ifc
->address
->u
.prefix4
;
85 ka
->dstbrd
.v4
= ifc
->destination
->u
.prefix4
;
88 ka
->addr
.v6
= ifc
->address
->u
.prefix6
;
90 ka
->dstbrd
.v6
= ifc
->destination
->u
.prefix6
;
98 pw2zpw(struct l2vpn_pw
*pw
, struct zapi_pw
*zpw
)
100 memset(zpw
, 0, sizeof(*zpw
));
101 strlcpy(zpw
->ifname
, pw
->ifname
, sizeof(zpw
->ifname
));
102 zpw
->ifindex
= pw
->ifindex
;
103 zpw
->type
= pw
->l2vpn
->pw_type
;
105 zpw
->nexthop
.ipv6
= pw
->addr
.v6
;
106 zpw
->local_label
= NO_LABEL
;
107 zpw
->remote_label
= NO_LABEL
;
108 if (pw
->flags
& F_PW_CWORD
)
109 zpw
->flags
= F_PSEUDOWIRE_CWORD
;
110 zpw
->data
.ldp
.lsr_id
= pw
->lsr_id
;
111 zpw
->data
.ldp
.pwid
= pw
->pwid
;
112 strlcpy(zpw
->data
.ldp
.vpn_name
, pw
->l2vpn
->name
,
113 sizeof(zpw
->data
.ldp
.vpn_name
));
117 zebra_send_mpls_labels(int cmd
, struct kroute
*kr
)
121 if (kr
->local_label
< MPLS_LABEL_RESERVED_MAX
||
122 kr
->remote_label
== NO_LABEL
)
125 debug_zebra_out("prefix %s/%u nexthop %s ifindex %u labels %s/%s (%s)",
126 log_addr(kr
->af
, &kr
->prefix
), kr
->prefixlen
,
127 log_addr(kr
->af
, &kr
->nexthop
), kr
->ifindex
,
128 log_label(kr
->local_label
), log_label(kr
->remote_label
),
129 (cmd
== ZEBRA_MPLS_LABELS_ADD
) ? "add" : "delete");
135 zclient_create_header(s
, cmd
, VRF_DEFAULT
);
136 stream_putc(s
, ZEBRA_LSP_LDP
);
137 stream_putl(s
, kr
->af
);
140 stream_put_in_addr(s
, &kr
->prefix
.v4
);
141 stream_putc(s
, kr
->prefixlen
);
142 stream_put_in_addr(s
, &kr
->nexthop
.v4
);
145 stream_write(s
, (u_char
*)&kr
->prefix
.v6
, 16);
146 stream_putc(s
, kr
->prefixlen
);
147 stream_write(s
, (u_char
*)&kr
->nexthop
.v6
, 16);
150 fatalx("kr_change: unknown af");
152 stream_putl(s
, kr
->ifindex
);
153 stream_putc(s
, kr
->priority
);
154 stream_putl(s
, kr
->local_label
);
155 stream_putl(s
, kr
->remote_label
);
157 /* Put length at the first point of the stream. */
158 stream_putw_at(s
, 0, stream_get_endp(s
));
160 return (zclient_send_message(zclient
));
164 kr_change(struct kroute
*kr
)
166 return (zebra_send_mpls_labels(ZEBRA_MPLS_LABELS_ADD
, kr
));
170 kr_delete(struct kroute
*kr
)
172 return (zebra_send_mpls_labels(ZEBRA_MPLS_LABELS_DELETE
, kr
));
176 kmpw_add(struct zapi_pw
*zpw
)
178 debug_zebra_out("pseudowire %s nexthop %s (add)",
179 zpw
->ifname
, log_addr(zpw
->af
, (union ldpd_addr
*)&zpw
->nexthop
));
181 return (zebra_send_pw(zclient
, ZEBRA_PW_ADD
, zpw
));
185 kmpw_del(struct zapi_pw
*zpw
)
187 debug_zebra_out("pseudowire %s nexthop %s (del)",
188 zpw
->ifname
, log_addr(zpw
->af
, (union ldpd_addr
*)&zpw
->nexthop
));
190 return (zebra_send_pw(zclient
, ZEBRA_PW_DELETE
, zpw
));
194 kmpw_set(struct zapi_pw
*zpw
)
196 debug_zebra_out("pseudowire %s nexthop %s labels %u/%u (set)",
197 zpw
->ifname
, log_addr(zpw
->af
, (union ldpd_addr
*)&zpw
->nexthop
),
198 zpw
->local_label
, zpw
->remote_label
);
200 return (zebra_send_pw(zclient
, ZEBRA_PW_SET
, zpw
));
204 kmpw_unset(struct zapi_pw
*zpw
)
206 debug_zebra_out("pseudowire %s nexthop %s (unset)",
207 zpw
->ifname
, log_addr(zpw
->af
, (union ldpd_addr
*)&zpw
->nexthop
));
209 return (zebra_send_pw(zclient
, ZEBRA_PW_UNSET
, zpw
));
213 kif_redistribute(const char *ifname
)
215 struct listnode
*node
, *cnode
;
216 struct interface
*ifp
;
217 struct connected
*ifc
;
221 for (ALL_LIST_ELEMENTS_RO(vrf_iflist(VRF_DEFAULT
), node
, ifp
)) {
222 if (ifname
&& strcmp(ifname
, ifp
->name
) != 0)
226 main_imsg_compose_both(IMSG_IFSTATUS
, &kif
, sizeof(kif
));
228 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, cnode
, ifc
)) {
229 ifc2kaddr(ifp
, ifc
, &ka
);
230 main_imsg_compose_ldpe(IMSG_NEWADDR
, 0, &ka
,
237 ldp_router_id_update(int command
, struct zclient
*zclient
, zebra_size_t length
,
240 struct prefix router_id
;
242 zebra_router_id_update_read(zclient
->ibuf
, &router_id
);
244 if (bad_addr_v4(router_id
.u
.prefix4
))
247 debug_zebra_in("router-id update %s", inet_ntoa(router_id
.u
.prefix4
));
249 global
.rtr_id
.s_addr
= router_id
.u
.prefix4
.s_addr
;
250 main_imsg_compose_ldpe(IMSG_RTRID_UPDATE
, 0, &global
.rtr_id
,
251 sizeof(global
.rtr_id
));
257 ldp_interface_add(int command
, struct zclient
*zclient
, zebra_size_t length
,
260 struct interface
*ifp
;
263 ifp
= zebra_interface_add_read(zclient
->ibuf
, vrf_id
);
264 debug_zebra_in("interface add %s index %d mtu %d", ifp
->name
,
265 ifp
->ifindex
, ifp
->mtu
);
268 main_imsg_compose_both(IMSG_IFSTATUS
, &kif
, sizeof(kif
));
274 ldp_interface_delete(int command
, struct zclient
*zclient
, zebra_size_t length
,
277 struct interface
*ifp
;
280 /* zebra_interface_state_read() updates interface structure in iflist */
281 ifp
= zebra_interface_state_read(zclient
->ibuf
, vrf_id
);
285 debug_zebra_in("interface delete %s index %d mtu %d", ifp
->name
,
286 ifp
->ifindex
, ifp
->mtu
);
288 /* To support pseudo interface do not free interface structure. */
289 /* if_delete(ifp); */
290 ifp
->ifindex
= IFINDEX_DELETED
;
293 main_imsg_compose_both(IMSG_IFSTATUS
, &kif
, sizeof(kif
));
299 ldp_interface_status_change(int command
, struct zclient
*zclient
,
300 zebra_size_t length
, vrf_id_t vrf_id
)
302 struct interface
*ifp
;
303 struct listnode
*node
;
304 struct connected
*ifc
;
309 * zebra_interface_state_read() updates interface structure in
312 ifp
= zebra_interface_state_read(zclient
->ibuf
, vrf_id
);
316 debug_zebra_in("interface %s state update", ifp
->name
);
319 main_imsg_compose_both(IMSG_IFSTATUS
, &kif
, sizeof(kif
));
321 if (if_is_operative(ifp
)) {
322 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, ifc
)) {
323 ifc2kaddr(ifp
, ifc
, &ka
);
324 main_imsg_compose_ldpe(IMSG_NEWADDR
, 0, &ka
,
328 for (ALL_LIST_ELEMENTS_RO(ifp
->connected
, node
, ifc
)) {
329 ifc2kaddr(ifp
, ifc
, &ka
);
330 main_imsg_compose_ldpe(IMSG_DELADDR
, 0, &ka
,
339 ldp_interface_address_add(int command
, struct zclient
*zclient
,
340 zebra_size_t length
, vrf_id_t vrf_id
)
342 struct connected
*ifc
;
343 struct interface
*ifp
;
346 ifc
= zebra_interface_address_read(command
, zclient
->ibuf
, vrf_id
);
351 ifc2kaddr(ifp
, ifc
, &ka
);
353 /* Filter invalid addresses. */
354 if (bad_addr(ka
.af
, &ka
.addr
))
357 debug_zebra_in("address add %s/%u interface %s",
358 log_addr(ka
.af
, &ka
.addr
), ka
.prefixlen
, ifp
->name
);
360 /* notify ldpe about new address */
361 main_imsg_compose_ldpe(IMSG_NEWADDR
, 0, &ka
, sizeof(ka
));
367 ldp_interface_address_delete(int command
, struct zclient
*zclient
,
368 zebra_size_t length
, vrf_id_t vrf_id
)
370 struct connected
*ifc
;
371 struct interface
*ifp
;
374 ifc
= zebra_interface_address_read(command
, zclient
->ibuf
, vrf_id
);
379 ifc2kaddr(ifp
, ifc
, &ka
);
382 /* Filter invalid addresses. */
383 if (bad_addr(ka
.af
, &ka
.addr
))
386 debug_zebra_in("address delete %s/%u interface %s",
387 log_addr(ka
.af
, &ka
.addr
), ka
.prefixlen
, ifp
->name
);
389 /* notify ldpe about removed address */
390 main_imsg_compose_ldpe(IMSG_DELADDR
, 0, &ka
, sizeof(ka
));
396 ldp_zebra_read_route(int command
, struct zclient
*zclient
, zebra_size_t length
,
401 u_char message_flags
;
403 int nhnum
= 0, nhlen
;
407 memset(&kr
, 0, sizeof(kr
));
410 type
= stream_getc(s
);
412 case ZEBRA_ROUTE_CONNECT
:
413 kr
.flags
|= F_CONNECTED
;
415 case ZEBRA_ROUTE_BGP
:
416 /* LDP should follow the IGP and ignore BGP routes */
422 stream_getl(s
); /* flags, unused */
423 stream_getw(s
); /* instance, unused */
424 message_flags
= stream_getc(s
);
427 case ZEBRA_REDISTRIBUTE_IPV4_ADD
:
428 case ZEBRA_REDISTRIBUTE_IPV4_DEL
:
430 nhlen
= sizeof(struct in_addr
);
432 case ZEBRA_REDISTRIBUTE_IPV6_ADD
:
433 case ZEBRA_REDISTRIBUTE_IPV6_DEL
:
435 nhlen
= sizeof(struct in6_addr
);
438 fatalx("ldp_zebra_read_route: unknown command");
440 kr
.prefixlen
= stream_getc(s
);
441 stream_get(&kr
.prefix
, s
, PSIZE(kr
.prefixlen
));
443 if (bad_addr(kr
.af
, &kr
.prefix
) ||
444 (kr
.af
== AF_INET6
&& IN6_IS_SCOPE_EMBED(&kr
.prefix
.v6
)))
447 if (kr
.af
== AF_INET6
&&
448 CHECK_FLAG(message_flags
, ZAPI_MESSAGE_SRCPFX
)) {
449 uint8_t src_prefixlen
;
451 src_prefixlen
= stream_getc(s
);
453 /* we completely ignore srcdest routes for now. */
458 if (CHECK_FLAG(message_flags
, ZAPI_MESSAGE_NEXTHOP
)) {
459 nhnum
= stream_getc(s
);
460 nhmark
= stream_get_getp(s
);
461 stream_set_getp(s
, nhmark
+ nhnum
* (nhlen
+ 5));
464 if (CHECK_FLAG(message_flags
, ZAPI_MESSAGE_DISTANCE
))
465 kr
.priority
= stream_getc(s
);
466 if (CHECK_FLAG(message_flags
, ZAPI_MESSAGE_METRIC
))
467 stream_getl(s
); /* metric, not used */
469 if (CHECK_FLAG(message_flags
, ZAPI_MESSAGE_NEXTHOP
))
470 stream_set_getp(s
, nhmark
);
472 if (command
== ZEBRA_REDISTRIBUTE_IPV4_ADD
||
473 command
== ZEBRA_REDISTRIBUTE_IPV6_ADD
)
477 debug_zebra_in("route %s %s/%d (%s)", (add
) ? "add" : "delete",
478 log_addr(kr
.af
, &kr
.prefix
), kr
.prefixlen
,
479 zebra_route_string(type
));
481 /* loop through all the nexthops */
482 for (; nhnum
> 0; nhnum
--) {
485 kr
.nexthop
.v4
.s_addr
= stream_get_ipv4(s
);
488 stream_get(&kr
.nexthop
.v6
, s
, sizeof(kr
.nexthop
.v6
));
493 stream_getc(s
); /* ifindex_num, unused. */
494 kr
.ifindex
= stream_getl(s
);
496 debug_zebra_in("route %s %s/%d nexthop %s ifindex %u (%s)",
497 (add
) ? "add" : "delete", log_addr(kr
.af
, &kr
.prefix
),
498 kr
.prefixlen
, log_addr(kr
.af
, &kr
.nexthop
), kr
.ifindex
,
499 zebra_route_string(type
));
502 main_imsg_compose_lde(IMSG_NETWORK_ADD
, 0, &kr
,
506 main_imsg_compose_lde(IMSG_NETWORK_UPDATE
, 0, &kr
, sizeof(kr
));
512 * Receive PW status update from Zebra and send it to LDE process.
515 ldp_zebra_read_pw_status_update(int command
, struct zclient
*zclient
,
516 zebra_size_t length
, vrf_id_t vrf_id
)
518 struct zapi_pw_status zpw
;
520 zebra_read_pw_status_update(command
, zclient
, length
, vrf_id
, &zpw
);
522 debug_zebra_in("pseudowire %s status %s", zpw
.ifname
,
523 (zpw
.status
== PW_STATUS_UP
) ? "up" : "down");
525 main_imsg_compose_lde(IMSG_PW_UPDATE
, 0, &zpw
, sizeof(zpw
));
531 ldp_zebra_connected(struct zclient
*zclient
)
533 zclient_send_reg_requests(zclient
, VRF_DEFAULT
);
534 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, AFI_IP
,
535 ZEBRA_ROUTE_ALL
, 0, VRF_DEFAULT
);
536 zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD
, zclient
, AFI_IP6
,
537 ZEBRA_ROUTE_ALL
, 0, VRF_DEFAULT
);
541 ldp_zebra_init(struct thread_master
*master
)
543 /* Set default values. */
544 zclient
= zclient_new(master
);
545 zclient_init(zclient
, ZEBRA_ROUTE_LDP
, 0);
548 zclient
->zebra_connected
= ldp_zebra_connected
;
549 zclient
->router_id_update
= ldp_router_id_update
;
550 zclient
->interface_add
= ldp_interface_add
;
551 zclient
->interface_delete
= ldp_interface_delete
;
552 zclient
->interface_up
= ldp_interface_status_change
;
553 zclient
->interface_down
= ldp_interface_status_change
;
554 zclient
->interface_address_add
= ldp_interface_address_add
;
555 zclient
->interface_address_delete
= ldp_interface_address_delete
;
556 zclient
->redistribute_route_ipv4_add
= ldp_zebra_read_route
;
557 zclient
->redistribute_route_ipv4_del
= ldp_zebra_read_route
;
558 zclient
->redistribute_route_ipv6_add
= ldp_zebra_read_route
;
559 zclient
->redistribute_route_ipv6_del
= ldp_zebra_read_route
;
560 zclient
->pw_status_update
= ldp_zebra_read_pw_status_update
;
564 ldp_zebra_destroy(void)
566 zclient_stop(zclient
);
567 zclient_free(zclient
);