3 * Copyright (C) 2018 Cumulus Networks, Inc.
6 * FRR is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * FRR is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
35 #include "nexthop_group.h"
39 #include "pbr_memory.h"
40 #include "pbr_zebra.h"
41 #include "pbr_debug.h"
43 DEFINE_MTYPE_STATIC(PBRD
, PBR_INTERFACE
, "PBR Interface")
45 /* Zebra structure to hold current status. */
46 struct zclient
*zclient
;
48 struct pbr_interface
*pbr_if_new(struct interface
*ifp
)
50 struct pbr_interface
*pbr_ifp
;
55 pbr_ifp
= XCALLOC(MTYPE_PBR_INTERFACE
, sizeof(*pbr_ifp
));
58 zlog_err("%s: PBR XCALLOC(%zu) failure", __PRETTY_FUNCTION__
,
67 /* Inteface addition message from zebra. */
68 static int interface_add(int command
, struct zclient
*zclient
,
69 zebra_size_t length
, vrf_id_t vrf_id
)
71 struct interface
*ifp
;
73 ifp
= zebra_interface_add_read(zclient
->ibuf
, vrf_id
);
84 static int interface_delete(int command
, struct zclient
*zclient
,
85 zebra_size_t length
, vrf_id_t vrf_id
)
87 struct interface
*ifp
;
91 /* zebra_interface_state_read () updates interface structure in iflist
93 ifp
= zebra_interface_state_read(s
, vrf_id
);
98 if_set_index(ifp
, IFINDEX_INTERNAL
);
103 static int interface_address_add(int command
, struct zclient
*zclient
,
104 zebra_size_t length
, vrf_id_t vrf_id
)
106 zebra_interface_address_read(command
, zclient
->ibuf
, vrf_id
);
111 static int interface_address_delete(int command
, struct zclient
*zclient
,
112 zebra_size_t length
, vrf_id_t vrf_id
)
116 c
= zebra_interface_address_read(command
, zclient
->ibuf
, vrf_id
);
125 static int interface_state_up(int command
, struct zclient
*zclient
,
126 zebra_size_t length
, vrf_id_t vrf_id
)
129 zebra_interface_state_read(zclient
->ibuf
, vrf_id
);
134 static int interface_state_down(int command
, struct zclient
*zclient
,
135 zebra_size_t length
, vrf_id_t vrf_id
)
138 zebra_interface_state_read(zclient
->ibuf
, vrf_id
);
143 static int route_notify_owner(int command
, struct zclient
*zclient
,
144 zebra_size_t length
, vrf_id_t vrf_id
)
147 enum zapi_route_notify_owner note
;
149 char buf
[PREFIX_STRLEN
];
151 prefix2str(&p
, buf
, sizeof(buf
));
153 if (!zapi_route_notify_decode(zclient
->ibuf
, &p
, &table_id
, ¬e
))
157 case ZAPI_ROUTE_FAIL_INSTALL
:
158 DEBUGD(&pbr_dbg_zebra
,
159 "%s: [%s] Route install failure for table: %u",
160 __PRETTY_FUNCTION__
, buf
, table_id
);
162 case ZAPI_ROUTE_BETTER_ADMIN_WON
:
163 DEBUGD(&pbr_dbg_zebra
,
164 "%s: [%s] Route better admin distance won for table: %u",
165 __PRETTY_FUNCTION__
, buf
, table_id
);
167 case ZAPI_ROUTE_INSTALLED
:
168 DEBUGD(&pbr_dbg_zebra
,
169 "%s: [%s] Route installed succeeded for table: %u",
170 __PRETTY_FUNCTION__
, buf
, table_id
);
171 pbr_nht_route_installed_for_table(table_id
);
173 case ZAPI_ROUTE_REMOVED
:
174 DEBUGD(&pbr_dbg_zebra
,
175 "%s: [%s] Route Removed succeeded for table: %u",
176 __PRETTY_FUNCTION__
, buf
, table_id
);
177 pbr_nht_route_removed_for_table(table_id
);
179 case ZAPI_ROUTE_REMOVE_FAIL
:
180 DEBUGD(&pbr_dbg_zebra
,
181 "%s: [%s] Route remove fail for table: %u",
182 __PRETTY_FUNCTION__
, buf
, table_id
);
189 static int rule_notify_owner(int command
, struct zclient
*zclient
,
190 zebra_size_t length
, vrf_id_t vrf_id
)
192 uint32_t seqno
, priority
, unique
;
193 enum zapi_rule_notify_owner note
;
194 struct pbr_map_sequence
*pbrms
;
195 struct pbr_map_interface
*pmi
;
199 if (!zapi_rule_notify_decode(zclient
->ibuf
, &seqno
, &priority
, &unique
,
204 pbrms
= pbrms_lookup_unique(unique
, ifi
, &pmi
);
206 DEBUGD(&pbr_dbg_zebra
,
207 "%s: Failure to lookup pbrms based upon %u",
208 __PRETTY_FUNCTION__
, unique
);
212 installed
= 1 << pmi
->install_bit
;
215 case ZAPI_RULE_FAIL_INSTALL
:
216 DEBUGD(&pbr_dbg_zebra
, "%s: Recieved RULE_FAIL_INSTALL",
217 __PRETTY_FUNCTION__
);
218 pbrms
->installed
&= ~installed
;
220 case ZAPI_RULE_INSTALLED
:
221 pbrms
->installed
|= installed
;
222 DEBUGD(&pbr_dbg_zebra
, "%s: Recived RULE_INSTALLED",
223 __PRETTY_FUNCTION__
);
225 case ZAPI_RULE_REMOVED
:
226 pbrms
->installed
&= ~installed
;
227 DEBUGD(&pbr_dbg_zebra
, "%s: Received RULE REMOVED",
228 __PRETTY_FUNCTION__
);
235 static void zebra_connected(struct zclient
*zclient
)
237 zclient_send_reg_requests(zclient
, VRF_DEFAULT
);
240 static void route_add_helper(struct zapi_route
*api
, struct nexthop_group nhg
,
243 struct zapi_nexthop
*api_nh
;
244 struct nexthop
*nhop
;
247 api
->prefix
.family
= install_afi
;
250 for (ALL_NEXTHOPS(nhg
, nhop
)) {
251 api_nh
= &api
->nexthops
[i
];
252 api_nh
->vrf_id
= nhop
->vrf_id
;
253 api_nh
->type
= nhop
->type
;
254 switch (nhop
->type
) {
255 case NEXTHOP_TYPE_IPV4
:
256 api_nh
->gate
.ipv4
= nhop
->gate
.ipv4
;
258 case NEXTHOP_TYPE_IPV4_IFINDEX
:
259 api_nh
->gate
.ipv4
= nhop
->gate
.ipv4
;
260 api_nh
->ifindex
= nhop
->ifindex
;
262 case NEXTHOP_TYPE_IFINDEX
:
263 api_nh
->ifindex
= nhop
->ifindex
;
265 case NEXTHOP_TYPE_IPV6
:
266 memcpy(&api_nh
->gate
.ipv6
, &nhop
->gate
.ipv6
, 16);
268 case NEXTHOP_TYPE_IPV6_IFINDEX
:
269 api_nh
->ifindex
= nhop
->ifindex
;
270 memcpy(&api_nh
->gate
.ipv6
, &nhop
->gate
.ipv6
, 16);
272 case NEXTHOP_TYPE_BLACKHOLE
:
273 api_nh
->bh_type
= nhop
->bh_type
;
278 api
->nexthop_num
= i
;
280 zclient_route_send(ZEBRA_ROUTE_ADD
, zclient
, api
);
284 * This function assumes a default route is being
285 * installed into the appropriate tableid
287 void route_add(struct pbr_nexthop_group_cache
*pnhgc
, struct nexthop_group nhg
,
290 struct zapi_route api
;
292 memset(&api
, 0, sizeof(api
));
294 api
.vrf_id
= VRF_DEFAULT
;
295 api
.type
= ZEBRA_ROUTE_PBR
;
296 api
.safi
= SAFI_UNICAST
;
298 * Sending a default route
300 api
.tableid
= pnhgc
->table_id
;
301 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
302 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
303 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
304 switch (install_afi
) {
306 route_add_helper(&api
, nhg
, AF_INET
);
307 route_add_helper(&api
, nhg
, AF_INET6
);
310 route_add_helper(&api
, nhg
, AF_INET
);
313 route_add_helper(&api
, nhg
, AF_INET6
);
316 DEBUGD(&pbr_dbg_zebra
,
317 "%s: Asked to install unsupported route type: L2VPN",
318 __PRETTY_FUNCTION__
);
324 * This function assumes a default route is being
325 * removed from the appropriate tableid
327 void route_delete(struct pbr_nexthop_group_cache
*pnhgc
, afi_t afi
)
329 struct zapi_route api
;
331 memset(&api
, 0, sizeof(api
));
332 api
.vrf_id
= VRF_DEFAULT
;
333 api
.type
= ZEBRA_ROUTE_PBR
;
334 api
.safi
= SAFI_UNICAST
;
336 api
.tableid
= pnhgc
->table_id
;
337 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
341 api
.prefix
.family
= AF_INET
;
342 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
345 api
.prefix
.family
= AF_INET6
;
346 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
349 api
.prefix
.family
= AF_INET
;
350 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
351 api
.prefix
.family
= AF_INET6
;
352 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
355 DEBUGD(&pbr_dbg_zebra
,
356 "%s: Asked to delete unsupported route type: L2VPN",
357 __PRETTY_FUNCTION__
);
362 static int pbr_zebra_nexthop_update(int command
, struct zclient
*zclient
,
363 zebra_size_t length
, vrf_id_t vrf_id
)
365 struct zapi_route nhr
;
366 char buf
[PREFIX2STR_BUFFER
];
369 zapi_nexthop_update_decode(zclient
->ibuf
, &nhr
);
371 if (DEBUG_MODE_CHECK(&pbr_dbg_zebra
, DEBUG_MODE_ALL
)) {
373 DEBUGD(&pbr_dbg_zebra
, "%s: Received Nexthop update: %s",
375 prefix2str(&nhr
.prefix
, buf
, sizeof(buf
)));
377 DEBUGD(&pbr_dbg_zebra
, "%s: (\tNexthops(%u)",
378 __PRETTY_FUNCTION__
, nhr
.nexthop_num
);
380 for (i
= 0; i
< nhr
.nexthop_num
; i
++) {
381 DEBUGD(&pbr_dbg_zebra
,
382 "%s: \tType: %d: vrf: %d, ifindex: %d gate: %s",
383 __PRETTY_FUNCTION__
, nhr
.nexthops
[i
].type
,
384 nhr
.nexthops
[i
].vrf_id
, nhr
.nexthops
[i
].ifindex
,
385 inet_ntoa(nhr
.nexthops
[i
].gate
.ipv4
));
389 pbr_nht_nexthop_update(&nhr
);
393 extern struct zebra_privs_t pbr_privs
;
395 void pbr_zebra_init(void)
397 struct zclient_options opt
= { .receive_notify
= true };
399 zclient
= zclient_new_notify(master
, &opt
);
401 zclient_init(zclient
, ZEBRA_ROUTE_PBR
, 0, &pbr_privs
);
402 zclient
->zebra_connected
= zebra_connected
;
403 zclient
->interface_add
= interface_add
;
404 zclient
->interface_delete
= interface_delete
;
405 zclient
->interface_up
= interface_state_up
;
406 zclient
->interface_down
= interface_state_down
;
407 zclient
->interface_address_add
= interface_address_add
;
408 zclient
->interface_address_delete
= interface_address_delete
;
409 zclient
->route_notify_owner
= route_notify_owner
;
410 zclient
->rule_notify_owner
= rule_notify_owner
;
411 zclient
->nexthop_update
= pbr_zebra_nexthop_update
;
414 void pbr_send_rnh(struct nexthop
*nhop
, bool reg
)
420 ZEBRA_NEXTHOP_REGISTER
: ZEBRA_NEXTHOP_UNREGISTER
;
422 memset(&p
, 0, sizeof(p
));
423 switch (nhop
->type
) {
424 case NEXTHOP_TYPE_IFINDEX
:
425 case NEXTHOP_TYPE_BLACKHOLE
:
427 case NEXTHOP_TYPE_IPV4
:
428 case NEXTHOP_TYPE_IPV4_IFINDEX
:
430 p
.u
.prefix4
.s_addr
= nhop
->gate
.ipv4
.s_addr
;
433 case NEXTHOP_TYPE_IPV6
:
434 case NEXTHOP_TYPE_IPV6_IFINDEX
:
436 memcpy(&p
.u
.prefix6
, &nhop
->gate
.ipv6
, 16);
441 if (zclient_send_rnh(zclient
, command
, &p
,
442 false, nhop
->vrf_id
) < 0) {
443 zlog_warn("%s: Failure to send nexthop to zebra",
444 __PRETTY_FUNCTION__
);
448 static void pbr_encode_pbr_map_sequence_prefix(struct stream
*s
,
450 unsigned char family
)
455 memset(&any
, 0, sizeof(any
));
460 stream_putc(s
, p
->family
);
461 stream_putc(s
, p
->prefixlen
);
462 stream_put(s
, &p
->u
.prefix
, prefix_blen(p
));
465 static void pbr_encode_pbr_map_sequence(struct stream
*s
,
466 struct pbr_map_sequence
*pbrms
,
467 struct interface
*ifp
)
469 unsigned char family
;
473 family
= pbrms
->family
;
475 stream_putl(s
, pbrms
->seqno
);
476 stream_putl(s
, pbrms
->ruleno
);
477 stream_putl(s
, pbrms
->unique
);
478 pbr_encode_pbr_map_sequence_prefix(s
, pbrms
->src
, family
);
479 stream_putw(s
, 0); /* src port */
480 pbr_encode_pbr_map_sequence_prefix(s
, pbrms
->dst
, family
);
481 stream_putw(s
, 0); /* dst port */
482 stream_putl(s
, 0); /* fwmark */
483 if (pbrms
->nhgrp_name
)
484 stream_putl(s
, pbr_nht_get_table(pbrms
->nhgrp_name
));
486 stream_putl(s
, pbr_nht_get_table(pbrms
->internal_nhg_name
));
487 stream_putl(s
, ifp
->ifindex
);
490 void pbr_send_pbr_map(struct pbr_map_sequence
*pbrms
,
491 struct pbr_map_interface
*pmi
, bool install
)
493 struct pbr_map
*pbrm
= pbrms
->parent
;
495 uint64_t is_installed
= (uint64_t)1 << pmi
->install_bit
;
497 is_installed
&= pbrms
->installed
;
499 DEBUGD(&pbr_dbg_zebra
, "%s: for %s %d(%" PRIu64
")",
500 __PRETTY_FUNCTION__
, pbrm
->name
, install
, is_installed
);
503 * If we are installed and asked to do so again
504 * just return. If we are not installed and asked
505 * and asked to delete just return;
507 if (install
&& is_installed
)
510 if (!install
&& !is_installed
)
516 zclient_create_header(s
,
517 install
? ZEBRA_RULE_ADD
: ZEBRA_RULE_DELETE
,
521 * We are sending one item at a time at the moment
525 DEBUGD(&pbr_dbg_zebra
, "%s: \t%s %s %d %s %u",
526 __PRETTY_FUNCTION__
, install
? "Installing" : "Deleting",
527 pbrm
->name
, install
, pmi
->ifp
->name
, pmi
->delete);
529 pbr_encode_pbr_map_sequence(s
, pbrms
, pmi
->ifp
);
531 stream_putw_at(s
, 0, stream_get_endp(s
));
533 zclient_send_message(zclient
);