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
));
61 /* Inteface addition message from zebra. */
62 static int interface_add(int command
, struct zclient
*zclient
,
63 zebra_size_t length
, vrf_id_t vrf_id
)
65 struct interface
*ifp
;
67 ifp
= zebra_interface_add_read(zclient
->ibuf
, vrf_id
);
78 static int interface_delete(int command
, struct zclient
*zclient
,
79 zebra_size_t length
, vrf_id_t vrf_id
)
81 struct interface
*ifp
;
85 /* zebra_interface_state_read () updates interface structure in iflist
87 ifp
= zebra_interface_state_read(s
, vrf_id
);
92 if_set_index(ifp
, IFINDEX_INTERNAL
);
97 static int interface_address_add(int command
, struct zclient
*zclient
,
98 zebra_size_t length
, vrf_id_t vrf_id
)
100 zebra_interface_address_read(command
, zclient
->ibuf
, vrf_id
);
105 static int interface_address_delete(int command
, struct zclient
*zclient
,
106 zebra_size_t length
, vrf_id_t vrf_id
)
110 c
= zebra_interface_address_read(command
, zclient
->ibuf
, vrf_id
);
119 static int interface_state_up(int command
, struct zclient
*zclient
,
120 zebra_size_t length
, vrf_id_t vrf_id
)
123 zebra_interface_state_read(zclient
->ibuf
, vrf_id
);
128 static int interface_state_down(int command
, struct zclient
*zclient
,
129 zebra_size_t length
, vrf_id_t vrf_id
)
132 zebra_interface_state_read(zclient
->ibuf
, vrf_id
);
137 static int route_notify_owner(int command
, struct zclient
*zclient
,
138 zebra_size_t length
, vrf_id_t vrf_id
)
141 enum zapi_route_notify_owner note
;
143 char buf
[PREFIX_STRLEN
];
145 prefix2str(&p
, buf
, sizeof(buf
));
147 if (!zapi_route_notify_decode(zclient
->ibuf
, &p
, &table_id
, ¬e
))
151 case ZAPI_ROUTE_FAIL_INSTALL
:
152 DEBUGD(&pbr_dbg_zebra
,
153 "%s: [%s] Route install failure for table: %u",
154 __PRETTY_FUNCTION__
, buf
, table_id
);
156 case ZAPI_ROUTE_BETTER_ADMIN_WON
:
157 DEBUGD(&pbr_dbg_zebra
,
158 "%s: [%s] Route better admin distance won for table: %u",
159 __PRETTY_FUNCTION__
, buf
, table_id
);
161 case ZAPI_ROUTE_INSTALLED
:
162 DEBUGD(&pbr_dbg_zebra
,
163 "%s: [%s] Route installed succeeded for table: %u",
164 __PRETTY_FUNCTION__
, buf
, table_id
);
165 pbr_nht_route_installed_for_table(table_id
);
167 case ZAPI_ROUTE_REMOVED
:
168 DEBUGD(&pbr_dbg_zebra
,
169 "%s: [%s] Route Removed succeeded for table: %u",
170 __PRETTY_FUNCTION__
, buf
, table_id
);
171 pbr_nht_route_removed_for_table(table_id
);
173 case ZAPI_ROUTE_REMOVE_FAIL
:
174 DEBUGD(&pbr_dbg_zebra
,
175 "%s: [%s] Route remove fail for table: %u",
176 __PRETTY_FUNCTION__
, buf
, table_id
);
183 static int rule_notify_owner(int command
, struct zclient
*zclient
,
184 zebra_size_t length
, vrf_id_t vrf_id
)
186 uint32_t seqno
, priority
, unique
;
187 enum zapi_rule_notify_owner note
;
188 struct pbr_map_sequence
*pbrms
;
189 struct pbr_map_interface
*pmi
;
193 if (!zapi_rule_notify_decode(zclient
->ibuf
, &seqno
, &priority
, &unique
,
198 pbrms
= pbrms_lookup_unique(unique
, ifi
, &pmi
);
200 DEBUGD(&pbr_dbg_zebra
,
201 "%s: Failure to lookup pbrms based upon %u",
202 __PRETTY_FUNCTION__
, unique
);
206 installed
= 1 << pmi
->install_bit
;
209 case ZAPI_RULE_FAIL_INSTALL
:
210 DEBUGD(&pbr_dbg_zebra
, "%s: Recieved RULE_FAIL_INSTALL",
211 __PRETTY_FUNCTION__
);
212 pbrms
->installed
&= ~installed
;
214 case ZAPI_RULE_INSTALLED
:
215 pbrms
->installed
|= installed
;
216 DEBUGD(&pbr_dbg_zebra
, "%s: Recived RULE_INSTALLED",
217 __PRETTY_FUNCTION__
);
219 case ZAPI_RULE_FAIL_REMOVE
:
220 case ZAPI_RULE_REMOVED
:
221 pbrms
->installed
&= ~installed
;
222 DEBUGD(&pbr_dbg_zebra
, "%s: Received RULE REMOVED",
223 __PRETTY_FUNCTION__
);
230 static void zebra_connected(struct zclient
*zclient
)
232 zclient_send_reg_requests(zclient
, VRF_DEFAULT
);
235 static void route_add_helper(struct zapi_route
*api
, struct nexthop_group nhg
,
238 struct zapi_nexthop
*api_nh
;
239 struct nexthop
*nhop
;
242 api
->prefix
.family
= install_afi
;
245 for (ALL_NEXTHOPS(nhg
, nhop
)) {
246 api_nh
= &api
->nexthops
[i
];
247 api_nh
->vrf_id
= nhop
->vrf_id
;
248 api_nh
->type
= nhop
->type
;
249 switch (nhop
->type
) {
250 case NEXTHOP_TYPE_IPV4
:
251 api_nh
->gate
.ipv4
= nhop
->gate
.ipv4
;
253 case NEXTHOP_TYPE_IPV4_IFINDEX
:
254 api_nh
->gate
.ipv4
= nhop
->gate
.ipv4
;
255 api_nh
->ifindex
= nhop
->ifindex
;
257 case NEXTHOP_TYPE_IFINDEX
:
258 api_nh
->ifindex
= nhop
->ifindex
;
260 case NEXTHOP_TYPE_IPV6
:
261 memcpy(&api_nh
->gate
.ipv6
, &nhop
->gate
.ipv6
, 16);
263 case NEXTHOP_TYPE_IPV6_IFINDEX
:
264 api_nh
->ifindex
= nhop
->ifindex
;
265 memcpy(&api_nh
->gate
.ipv6
, &nhop
->gate
.ipv6
, 16);
267 case NEXTHOP_TYPE_BLACKHOLE
:
268 api_nh
->bh_type
= nhop
->bh_type
;
273 api
->nexthop_num
= i
;
275 zclient_route_send(ZEBRA_ROUTE_ADD
, zclient
, api
);
279 * This function assumes a default route is being
280 * installed into the appropriate tableid
282 void route_add(struct pbr_nexthop_group_cache
*pnhgc
, struct nexthop_group nhg
,
285 struct zapi_route api
;
287 memset(&api
, 0, sizeof(api
));
289 api
.vrf_id
= VRF_DEFAULT
;
290 api
.type
= ZEBRA_ROUTE_PBR
;
291 api
.safi
= SAFI_UNICAST
;
293 * Sending a default route
295 api
.tableid
= pnhgc
->table_id
;
296 SET_FLAG(api
.flags
, ZEBRA_FLAG_ALLOW_RECURSION
);
297 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
298 SET_FLAG(api
.message
, ZAPI_MESSAGE_NEXTHOP
);
299 switch (install_afi
) {
301 route_add_helper(&api
, nhg
, AF_INET
);
302 route_add_helper(&api
, nhg
, AF_INET6
);
305 route_add_helper(&api
, nhg
, AF_INET
);
308 route_add_helper(&api
, nhg
, AF_INET6
);
311 DEBUGD(&pbr_dbg_zebra
,
312 "%s: Asked to install unsupported route type: L2VPN",
313 __PRETTY_FUNCTION__
);
319 * This function assumes a default route is being
320 * removed from the appropriate tableid
322 void route_delete(struct pbr_nexthop_group_cache
*pnhgc
, afi_t afi
)
324 struct zapi_route api
;
326 memset(&api
, 0, sizeof(api
));
327 api
.vrf_id
= VRF_DEFAULT
;
328 api
.type
= ZEBRA_ROUTE_PBR
;
329 api
.safi
= SAFI_UNICAST
;
331 api
.tableid
= pnhgc
->table_id
;
332 SET_FLAG(api
.message
, ZAPI_MESSAGE_TABLEID
);
336 api
.prefix
.family
= AF_INET
;
337 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
340 api
.prefix
.family
= AF_INET6
;
341 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
344 api
.prefix
.family
= AF_INET
;
345 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
346 api
.prefix
.family
= AF_INET6
;
347 zclient_route_send(ZEBRA_ROUTE_DELETE
, zclient
, &api
);
350 DEBUGD(&pbr_dbg_zebra
,
351 "%s: Asked to delete unsupported route type: L2VPN",
352 __PRETTY_FUNCTION__
);
357 static int pbr_zebra_nexthop_update(int command
, struct zclient
*zclient
,
358 zebra_size_t length
, vrf_id_t vrf_id
)
360 struct zapi_route nhr
;
361 char buf
[PREFIX2STR_BUFFER
];
364 zapi_nexthop_update_decode(zclient
->ibuf
, &nhr
);
366 if (DEBUG_MODE_CHECK(&pbr_dbg_zebra
, DEBUG_MODE_ALL
)) {
368 DEBUGD(&pbr_dbg_zebra
, "%s: Received Nexthop update: %s",
370 prefix2str(&nhr
.prefix
, buf
, sizeof(buf
)));
372 DEBUGD(&pbr_dbg_zebra
, "%s: (\tNexthops(%u)",
373 __PRETTY_FUNCTION__
, nhr
.nexthop_num
);
375 for (i
= 0; i
< nhr
.nexthop_num
; i
++) {
376 DEBUGD(&pbr_dbg_zebra
,
377 "%s: \tType: %d: vrf: %d, ifindex: %d gate: %s",
378 __PRETTY_FUNCTION__
, nhr
.nexthops
[i
].type
,
379 nhr
.nexthops
[i
].vrf_id
, nhr
.nexthops
[i
].ifindex
,
380 inet_ntoa(nhr
.nexthops
[i
].gate
.ipv4
));
384 pbr_nht_nexthop_update(&nhr
);
388 extern struct zebra_privs_t pbr_privs
;
390 void pbr_zebra_init(void)
392 struct zclient_options opt
= { .receive_notify
= true };
394 zclient
= zclient_new_notify(master
, &opt
);
396 zclient_init(zclient
, ZEBRA_ROUTE_PBR
, 0, &pbr_privs
);
397 zclient
->zebra_connected
= zebra_connected
;
398 zclient
->interface_add
= interface_add
;
399 zclient
->interface_delete
= interface_delete
;
400 zclient
->interface_up
= interface_state_up
;
401 zclient
->interface_down
= interface_state_down
;
402 zclient
->interface_address_add
= interface_address_add
;
403 zclient
->interface_address_delete
= interface_address_delete
;
404 zclient
->route_notify_owner
= route_notify_owner
;
405 zclient
->rule_notify_owner
= rule_notify_owner
;
406 zclient
->nexthop_update
= pbr_zebra_nexthop_update
;
409 void pbr_send_rnh(struct nexthop
*nhop
, bool reg
)
415 ZEBRA_NEXTHOP_REGISTER
: ZEBRA_NEXTHOP_UNREGISTER
;
417 memset(&p
, 0, sizeof(p
));
418 switch (nhop
->type
) {
419 case NEXTHOP_TYPE_IFINDEX
:
420 case NEXTHOP_TYPE_BLACKHOLE
:
422 case NEXTHOP_TYPE_IPV4
:
423 case NEXTHOP_TYPE_IPV4_IFINDEX
:
425 p
.u
.prefix4
.s_addr
= nhop
->gate
.ipv4
.s_addr
;
428 case NEXTHOP_TYPE_IPV6
:
429 case NEXTHOP_TYPE_IPV6_IFINDEX
:
431 memcpy(&p
.u
.prefix6
, &nhop
->gate
.ipv6
, 16);
436 if (zclient_send_rnh(zclient
, command
, &p
,
437 false, nhop
->vrf_id
) < 0) {
438 zlog_warn("%s: Failure to send nexthop to zebra",
439 __PRETTY_FUNCTION__
);
443 static void pbr_encode_pbr_map_sequence_prefix(struct stream
*s
,
445 unsigned char family
)
450 memset(&any
, 0, sizeof(any
));
455 stream_putc(s
, p
->family
);
456 stream_putc(s
, p
->prefixlen
);
457 stream_put(s
, &p
->u
.prefix
, prefix_blen(p
));
460 static void pbr_encode_pbr_map_sequence(struct stream
*s
,
461 struct pbr_map_sequence
*pbrms
,
462 struct interface
*ifp
)
464 unsigned char family
;
468 family
= pbrms
->family
;
470 stream_putl(s
, pbrms
->seqno
);
471 stream_putl(s
, pbrms
->ruleno
);
472 stream_putl(s
, pbrms
->unique
);
473 pbr_encode_pbr_map_sequence_prefix(s
, pbrms
->src
, family
);
474 stream_putw(s
, 0); /* src port */
475 pbr_encode_pbr_map_sequence_prefix(s
, pbrms
->dst
, family
);
476 stream_putw(s
, 0); /* dst port */
477 stream_putl(s
, 0); /* fwmark */
478 if (pbrms
->nhgrp_name
)
479 stream_putl(s
, pbr_nht_get_table(pbrms
->nhgrp_name
));
481 stream_putl(s
, pbr_nht_get_table(pbrms
->internal_nhg_name
));
482 stream_putl(s
, ifp
->ifindex
);
485 void pbr_send_pbr_map(struct pbr_map_sequence
*pbrms
,
486 struct pbr_map_interface
*pmi
, bool install
)
488 struct pbr_map
*pbrm
= pbrms
->parent
;
490 uint64_t is_installed
= (uint64_t)1 << pmi
->install_bit
;
492 is_installed
&= pbrms
->installed
;
494 DEBUGD(&pbr_dbg_zebra
, "%s: for %s %d(%" PRIu64
")",
495 __PRETTY_FUNCTION__
, pbrm
->name
, install
, is_installed
);
498 * If we are installed and asked to do so again
499 * just return. If we are not installed and asked
500 * and asked to delete just return;
502 if (install
&& is_installed
)
505 if (!install
&& !is_installed
)
511 zclient_create_header(s
,
512 install
? ZEBRA_RULE_ADD
: ZEBRA_RULE_DELETE
,
516 * We are sending one item at a time at the moment
520 DEBUGD(&pbr_dbg_zebra
, "%s: \t%s %s %d %s %u",
521 __PRETTY_FUNCTION__
, install
? "Installing" : "Deleting",
522 pbrm
->name
, install
, pmi
->ifp
->name
, pmi
->delete);
524 pbr_encode_pbr_map_sequence(s
, pbrms
, pmi
->ifp
);
526 stream_putw_at(s
, 0, stream_get_endp(s
));
528 zclient_send_message(zclient
);