1 /* Zebra Policy Based Routing (PBR) main handling.
2 * Copyright (C) 2018 Cumulus Networks, Inc.
4 * This file is part of FRR.
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
17 * along with FRR; see the file COPYING. If not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
29 #include "zebra/zebra_router.h"
30 #include "zebra/zebra_pbr.h"
32 #include "zebra/zapi_msg.h"
33 #include "zebra/zebra_memory.h"
34 #include "zebra/zserv.h"
37 DEFINE_MTYPE_STATIC(ZEBRA
, PBR_IPTABLE_IFNAME
, "PBR interface list")
40 static const struct message ipset_type_msg
[] = {
41 {IPSET_NET_PORT_NET
, "net,port,net"},
42 {IPSET_NET_PORT
, "net,port"},
43 {IPSET_NET_NET
, "net,net"},
48 const struct message icmp_typecode_str
[] = {
49 { 0 << 8, "echo-reply"},
51 { 3 << 8, "network-unreachable"},
52 { (3 << 8) + 1, "host-unreachable"},
53 { (3 << 8) + 2, "protocol-unreachable"},
54 { (3 << 8) + 3, "port-unreachable"},
55 { (3 << 8) + 4, "fragmentation-needed"},
56 { (3 << 8) + 5, "source-route-failed"},
57 { (3 << 8) + 6, "network-unknown"},
58 { (3 << 8) + 7, "host-unknown"},
59 { (3 << 8) + 9, "network-prohibited"},
60 { (3 << 8) + 10, "host-prohibited"},
61 { (3 << 8) + 11, "TOS-network-unreachable"},
62 { (3 << 8) + 12, "TOS-host-unreachable"},
63 { (3 << 8) + 13, "communication-prohibited"},
64 { (3 << 8) + 14, "host-precedence-violation"},
65 { (3 << 8) + 15, "precedence-cutoff"},
66 { 4 << 8, "source-quench"},
67 { 5 << 8, "network-redirect"},
68 { (5 << 8) + 1, "host-redirect"},
69 { (5 << 8) + 2, "TOS-network-redirect"},
70 { (5 << 8) + 3, "TOS-host-redirect"},
71 { 8 << 8, "echo-request"},
73 { 9 << 8, "router-advertisement"},
74 { 10 << 8, "router-solicitation"},
75 { 11 << 8, "ttl-zero-during-transit"},
76 { (11 << 8) + 1, "ttl-zero-during-reassembly"},
77 { 12 << 8, "ip-header-bad"},
78 { (12 << 8) + 1, "required-option-missing"},
79 { 13 << 8, "timestamp-request"},
80 { 14 << 8, "timestamp-reply"},
81 { 17 << 8, "address-mask-request"},
82 { 18 << 8, "address-mask-reply"},
87 static const struct message tcp_value_str
[] = {
88 {TCP_HEADER_FIN
, "FIN"},
89 {TCP_HEADER_SYN
, "SYN"},
90 {TCP_HEADER_RST
, "RST"},
91 {TCP_HEADER_PSH
, "PSH"},
92 {TCP_HEADER_ACK
, "ACK"},
93 {TCP_HEADER_URG
, "URG"},
97 static const struct message fragment_value_str
[] = {
100 {4, "first-fragment"},
101 {8, "last-fragment"},
105 /* static function declarations */
106 DEFINE_HOOK(zebra_pbr_ipset_entry_get_stat
,
107 (struct zebra_pbr_ipset_entry
*ipset
, uint64_t *pkts
,
109 (ipset
, pkts
, bytes
))
111 DEFINE_HOOK(zebra_pbr_iptable_get_stat
,
112 (struct zebra_pbr_iptable
*iptable
, uint64_t *pkts
,
114 (iptable
, pkts
, bytes
))
116 DEFINE_HOOK(zebra_pbr_iptable_update
,
117 (int cmd
, struct zebra_pbr_iptable
*iptable
), (cmd
, iptable
));
119 DEFINE_HOOK(zebra_pbr_ipset_entry_update
,
120 (int cmd
, struct zebra_pbr_ipset_entry
*ipset
), (cmd
, ipset
));
122 DEFINE_HOOK(zebra_pbr_ipset_update
,
123 (int cmd
, struct zebra_pbr_ipset
*ipset
), (cmd
, ipset
));
125 /* Private functions */
127 /* Public functions */
128 void zebra_pbr_rules_free(void *arg
)
130 struct zebra_pbr_rule
*rule
;
132 rule
= (struct zebra_pbr_rule
*)arg
;
134 (void)kernel_del_pbr_rule(rule
);
135 XFREE(MTYPE_TMP
, rule
);
138 uint32_t zebra_pbr_rules_hash_key(const void *arg
)
140 const struct zebra_pbr_rule
*rule
;
144 key
= jhash_3words(rule
->rule
.seq
, rule
->rule
.priority
,
145 rule
->rule
.action
.table
,
146 prefix_hash_key(&rule
->rule
.filter
.src_ip
));
148 if (rule
->rule
.filter
.fwmark
)
149 key
= jhash_3words(rule
->rule
.filter
.fwmark
, rule
->vrf_id
,
150 rule
->rule
.ifindex
, key
);
152 key
= jhash_2words(rule
->vrf_id
, rule
->rule
.ifindex
, key
);
154 return jhash_3words(rule
->rule
.filter
.src_port
,
155 rule
->rule
.filter
.dst_port
,
156 prefix_hash_key(&rule
->rule
.filter
.dst_ip
),
157 jhash_1word(rule
->rule
.unique
, key
));
160 bool zebra_pbr_rules_hash_equal(const void *arg1
, const void *arg2
)
162 const struct zebra_pbr_rule
*r1
, *r2
;
164 r1
= (const struct zebra_pbr_rule
*)arg1
;
165 r2
= (const struct zebra_pbr_rule
*)arg2
;
167 if (r1
->rule
.seq
!= r2
->rule
.seq
)
170 if (r1
->rule
.priority
!= r2
->rule
.priority
)
173 if (r1
->rule
.unique
!= r2
->rule
.unique
)
176 if (r1
->rule
.action
.table
!= r2
->rule
.action
.table
)
179 if (r1
->rule
.filter
.src_port
!= r2
->rule
.filter
.src_port
)
182 if (r1
->rule
.filter
.dst_port
!= r2
->rule
.filter
.dst_port
)
185 if (r1
->rule
.filter
.fwmark
!= r2
->rule
.filter
.fwmark
)
188 if (!prefix_same(&r1
->rule
.filter
.src_ip
, &r2
->rule
.filter
.src_ip
))
191 if (!prefix_same(&r1
->rule
.filter
.dst_ip
, &r2
->rule
.filter
.dst_ip
))
194 if (r1
->rule
.ifindex
!= r2
->rule
.ifindex
)
197 if (r1
->vrf_id
!= r2
->vrf_id
)
203 struct pbr_rule_unique_lookup
{
204 struct zebra_pbr_rule
*rule
;
210 static int pbr_rule_lookup_unique_walker(struct hash_bucket
*b
, void *data
)
212 struct pbr_rule_unique_lookup
*pul
= data
;
213 struct zebra_pbr_rule
*rule
= b
->data
;
215 if (pul
->unique
== rule
->rule
.unique
216 && pul
->ifindex
== rule
->rule
.ifindex
217 && pul
->vrf_id
== rule
->vrf_id
) {
219 return HASHWALK_ABORT
;
222 return HASHWALK_CONTINUE
;
225 static struct zebra_pbr_rule
*
226 pbr_rule_lookup_unique(struct zebra_pbr_rule
*zrule
)
228 struct pbr_rule_unique_lookup pul
;
230 pul
.unique
= zrule
->rule
.unique
;
231 pul
.ifindex
= zrule
->rule
.ifindex
;
233 pul
.vrf_id
= zrule
->vrf_id
;
234 hash_walk(zrouter
.rules_hash
, &pbr_rule_lookup_unique_walker
, &pul
);
239 void zebra_pbr_ipset_free(void *arg
)
241 struct zebra_pbr_ipset
*ipset
;
243 ipset
= (struct zebra_pbr_ipset
*)arg
;
244 hook_call(zebra_pbr_ipset_update
, 0, ipset
);
245 XFREE(MTYPE_TMP
, ipset
);
248 uint32_t zebra_pbr_ipset_hash_key(const void *arg
)
250 const struct zebra_pbr_ipset
*ipset
= arg
;
251 uint32_t *pnt
= (uint32_t *)&ipset
->ipset_name
;
252 uint32_t key
= jhash_1word(ipset
->vrf_id
, 0x63ab42de);
254 return jhash2(pnt
, ZEBRA_IPSET_NAME_HASH_SIZE
, key
);
257 bool zebra_pbr_ipset_hash_equal(const void *arg1
, const void *arg2
)
259 const struct zebra_pbr_ipset
*r1
, *r2
;
261 r1
= (const struct zebra_pbr_ipset
*)arg1
;
262 r2
= (const struct zebra_pbr_ipset
*)arg2
;
264 if (r1
->type
!= r2
->type
)
266 if (r1
->unique
!= r2
->unique
)
268 if (r1
->vrf_id
!= r2
->vrf_id
)
271 if (strncmp(r1
->ipset_name
, r2
->ipset_name
,
272 ZEBRA_IPSET_NAME_SIZE
))
277 void zebra_pbr_ipset_entry_free(void *arg
)
279 struct zebra_pbr_ipset_entry
*ipset
;
281 ipset
= (struct zebra_pbr_ipset_entry
*)arg
;
283 hook_call(zebra_pbr_ipset_entry_update
, 0, ipset
);
285 XFREE(MTYPE_TMP
, ipset
);
288 uint32_t zebra_pbr_ipset_entry_hash_key(const void *arg
)
290 const struct zebra_pbr_ipset_entry
*ipset
;
294 key
= prefix_hash_key(&ipset
->src
);
295 key
= jhash_1word(ipset
->unique
, key
);
296 key
= jhash_1word(prefix_hash_key(&ipset
->dst
), key
);
297 key
= jhash(&ipset
->dst_port_min
, 2, key
);
298 key
= jhash(&ipset
->dst_port_max
, 2, key
);
299 key
= jhash(&ipset
->src_port_min
, 2, key
);
300 key
= jhash(&ipset
->src_port_max
, 2, key
);
301 key
= jhash(&ipset
->proto
, 1, key
);
306 bool zebra_pbr_ipset_entry_hash_equal(const void *arg1
, const void *arg2
)
308 const struct zebra_pbr_ipset_entry
*r1
, *r2
;
310 r1
= (const struct zebra_pbr_ipset_entry
*)arg1
;
311 r2
= (const struct zebra_pbr_ipset_entry
*)arg2
;
313 if (r1
->unique
!= r2
->unique
)
316 if (!prefix_same(&r1
->src
, &r2
->src
))
319 if (!prefix_same(&r1
->dst
, &r2
->dst
))
322 if (r1
->src_port_min
!= r2
->src_port_min
)
325 if (r1
->src_port_max
!= r2
->src_port_max
)
328 if (r1
->dst_port_min
!= r2
->dst_port_min
)
331 if (r1
->dst_port_max
!= r2
->dst_port_max
)
334 if (r1
->proto
!= r2
->proto
)
339 void zebra_pbr_iptable_free(void *arg
)
341 struct zebra_pbr_iptable
*iptable
;
342 struct listnode
*node
, *nnode
;
345 iptable
= (struct zebra_pbr_iptable
*)arg
;
346 hook_call(zebra_pbr_iptable_update
, 0, iptable
);
348 if (iptable
->interface_name_list
) {
349 for (ALL_LIST_ELEMENTS(iptable
->interface_name_list
, node
,
351 XFREE(MTYPE_PBR_IPTABLE_IFNAME
, name
);
352 list_delete_node(iptable
->interface_name_list
, node
);
354 list_delete(&iptable
->interface_name_list
);
356 XFREE(MTYPE_TMP
, iptable
);
359 uint32_t zebra_pbr_iptable_hash_key(const void *arg
)
361 const struct zebra_pbr_iptable
*iptable
= arg
;
362 uint32_t *pnt
= (uint32_t *)&(iptable
->ipset_name
);
365 key
= jhash2(pnt
, ZEBRA_IPSET_NAME_HASH_SIZE
,
367 key
= jhash_1word(iptable
->fwmark
, key
);
368 key
= jhash_1word(iptable
->pkt_len_min
, key
);
369 key
= jhash_1word(iptable
->pkt_len_max
, key
);
370 key
= jhash_1word(iptable
->tcp_flags
, key
);
371 key
= jhash_1word(iptable
->tcp_mask_flags
, key
);
372 key
= jhash_1word(iptable
->dscp_value
, key
);
373 key
= jhash_1word(iptable
->protocol
, key
);
374 key
= jhash_1word(iptable
->fragment
, key
);
375 key
= jhash_1word(iptable
->vrf_id
, key
);
377 return jhash_3words(iptable
->filter_bm
, iptable
->type
,
378 iptable
->unique
, key
);
381 bool zebra_pbr_iptable_hash_equal(const void *arg1
, const void *arg2
)
383 const struct zebra_pbr_iptable
*r1
, *r2
;
385 r1
= (const struct zebra_pbr_iptable
*)arg1
;
386 r2
= (const struct zebra_pbr_iptable
*)arg2
;
388 if (r1
->vrf_id
!= r2
->vrf_id
)
390 if (r1
->type
!= r2
->type
)
392 if (r1
->unique
!= r2
->unique
)
394 if (r1
->filter_bm
!= r2
->filter_bm
)
396 if (r1
->fwmark
!= r2
->fwmark
)
398 if (r1
->action
!= r2
->action
)
400 if (strncmp(r1
->ipset_name
, r2
->ipset_name
,
401 ZEBRA_IPSET_NAME_SIZE
))
403 if (r1
->pkt_len_min
!= r2
->pkt_len_min
)
405 if (r1
->pkt_len_max
!= r2
->pkt_len_max
)
407 if (r1
->tcp_flags
!= r2
->tcp_flags
)
409 if (r1
->tcp_mask_flags
!= r2
->tcp_mask_flags
)
411 if (r1
->dscp_value
!= r2
->dscp_value
)
413 if (r1
->fragment
!= r2
->fragment
)
415 if (r1
->protocol
!= r2
->protocol
)
420 static void *pbr_rule_alloc_intern(void *arg
)
422 struct zebra_pbr_rule
*zpr
;
423 struct zebra_pbr_rule
*new;
425 zpr
= (struct zebra_pbr_rule
*)arg
;
427 new = XCALLOC(MTYPE_TMP
, sizeof(*new));
429 memcpy(new, zpr
, sizeof(*zpr
));
434 void zebra_pbr_add_rule(struct zebra_pbr_rule
*rule
)
436 struct zebra_pbr_rule
*unique
=
437 pbr_rule_lookup_unique(rule
);
439 (void)hash_get(zrouter
.rules_hash
, rule
, pbr_rule_alloc_intern
);
440 (void)kernel_add_pbr_rule(rule
);
442 * Rule Replace semantics, if we have an old, install the
443 * new rule, look above, and then delete the old
446 zebra_pbr_del_rule(unique
);
449 void zebra_pbr_del_rule(struct zebra_pbr_rule
*rule
)
451 struct zebra_pbr_rule
*lookup
;
453 lookup
= hash_lookup(zrouter
.rules_hash
, rule
);
454 (void)kernel_del_pbr_rule(rule
);
457 hash_release(zrouter
.rules_hash
, lookup
);
458 XFREE(MTYPE_TMP
, lookup
);
460 zlog_debug("%s: Rule being deleted we know nothing about",
464 static void zebra_pbr_cleanup_rules(struct hash_bucket
*b
, void *data
)
466 struct zebra_pbr_rule
*rule
= b
->data
;
469 if (rule
->sock
== *sock
) {
470 (void)kernel_del_pbr_rule(rule
);
471 if (hash_release(zrouter
.rules_hash
, rule
))
472 XFREE(MTYPE_TMP
, rule
);
475 "%s: Rule seq: %u is being cleaned but we can't find it in our tables",
476 __func__
, rule
->rule
.seq
);
480 static void zebra_pbr_cleanup_ipset(struct hash_bucket
*b
, void *data
)
482 struct zebra_pbr_ipset
*ipset
= b
->data
;
485 if (ipset
->sock
== *sock
) {
486 if (hash_release(zrouter
.ipset_hash
, ipset
))
487 zebra_pbr_ipset_free(ipset
);
489 hook_call(zebra_pbr_ipset_update
, 0, ipset
);
493 static void zebra_pbr_cleanup_ipset_entry(struct hash_bucket
*b
, void *data
)
495 struct zebra_pbr_ipset_entry
*ipset
= b
->data
;
498 if (ipset
->sock
== *sock
) {
499 if (hash_release(zrouter
.ipset_entry_hash
, ipset
))
500 zebra_pbr_ipset_entry_free(ipset
);
502 hook_call(zebra_pbr_ipset_entry_update
, 0, ipset
);
506 static void zebra_pbr_cleanup_iptable(struct hash_bucket
*b
, void *data
)
508 struct zebra_pbr_iptable
*iptable
= b
->data
;
511 if (iptable
->sock
== *sock
) {
512 if (hash_release(zrouter
.iptable_hash
, iptable
))
513 zebra_pbr_iptable_free(iptable
);
515 hook_call(zebra_pbr_iptable_update
, 0, iptable
);
519 static int zebra_pbr_client_close_cleanup(struct zserv
*client
)
521 int sock
= client
->sock
;
525 hash_iterate(zrouter
.rules_hash
, zebra_pbr_cleanup_rules
, &sock
);
526 hash_iterate(zrouter
.iptable_hash
, zebra_pbr_cleanup_iptable
, &sock
);
527 hash_iterate(zrouter
.ipset_entry_hash
, zebra_pbr_cleanup_ipset_entry
,
529 hash_iterate(zrouter
.ipset_hash
, zebra_pbr_cleanup_ipset
, &sock
);
533 void zebra_pbr_init(void)
535 hook_register(zserv_client_close
, zebra_pbr_client_close_cleanup
);
538 static void *pbr_ipset_alloc_intern(void *arg
)
540 struct zebra_pbr_ipset
*zpi
;
541 struct zebra_pbr_ipset
*new;
543 zpi
= (struct zebra_pbr_ipset
*)arg
;
545 new = XCALLOC(MTYPE_TMP
, sizeof(struct zebra_pbr_ipset
));
547 memcpy(new, zpi
, sizeof(*zpi
));
552 void zebra_pbr_create_ipset(struct zebra_pbr_ipset
*ipset
)
556 (void)hash_get(zrouter
.ipset_hash
, ipset
, pbr_ipset_alloc_intern
);
557 ret
= hook_call(zebra_pbr_ipset_update
, 1, ipset
);
558 kernel_pbr_ipset_add_del_status(ipset
,
559 ret
? ZEBRA_DPLANE_INSTALL_SUCCESS
560 : ZEBRA_DPLANE_INSTALL_FAILURE
);
563 void zebra_pbr_destroy_ipset(struct zebra_pbr_ipset
*ipset
)
565 struct zebra_pbr_ipset
*lookup
;
567 lookup
= hash_lookup(zrouter
.ipset_hash
, ipset
);
568 hook_call(zebra_pbr_ipset_update
, 0, ipset
);
570 hash_release(zrouter
.ipset_hash
, lookup
);
571 XFREE(MTYPE_TMP
, lookup
);
574 "%s: IPSet Entry being deleted we know nothing about",
578 struct pbr_ipset_name_lookup
{
579 struct zebra_pbr_ipset
*ipset
;
580 char ipset_name
[ZEBRA_IPSET_NAME_SIZE
];
583 const char *zebra_pbr_ipset_type2str(uint32_t type
)
585 return lookup_msg(ipset_type_msg
, type
,
586 "Unrecognized IPset Type");
589 static int zebra_pbr_ipset_pername_walkcb(struct hash_bucket
*bucket
, void *arg
)
591 struct pbr_ipset_name_lookup
*pinl
=
592 (struct pbr_ipset_name_lookup
*)arg
;
593 struct zebra_pbr_ipset
*zpi
= (struct zebra_pbr_ipset
*)bucket
->data
;
595 if (!strncmp(pinl
->ipset_name
, zpi
->ipset_name
,
596 ZEBRA_IPSET_NAME_SIZE
)) {
598 return HASHWALK_ABORT
;
600 return HASHWALK_CONTINUE
;
603 struct zebra_pbr_ipset
*zebra_pbr_lookup_ipset_pername(char *ipsetname
)
605 struct pbr_ipset_name_lookup pinl
;
606 struct pbr_ipset_name_lookup
*ptr
= &pinl
;
610 memset(ptr
, 0, sizeof(struct pbr_ipset_name_lookup
));
611 snprintf((char *)ptr
->ipset_name
, ZEBRA_IPSET_NAME_SIZE
, "%s",
613 hash_walk(zrouter
.ipset_hash
, zebra_pbr_ipset_pername_walkcb
, ptr
);
617 static void *pbr_ipset_entry_alloc_intern(void *arg
)
619 struct zebra_pbr_ipset_entry
*zpi
;
620 struct zebra_pbr_ipset_entry
*new;
622 zpi
= (struct zebra_pbr_ipset_entry
*)arg
;
624 new = XCALLOC(MTYPE_TMP
, sizeof(struct zebra_pbr_ipset_entry
));
626 memcpy(new, zpi
, sizeof(*zpi
));
631 void zebra_pbr_add_ipset_entry(struct zebra_pbr_ipset_entry
*ipset
)
635 (void)hash_get(zrouter
.ipset_entry_hash
, ipset
,
636 pbr_ipset_entry_alloc_intern
);
637 ret
= hook_call(zebra_pbr_ipset_entry_update
, 1, ipset
);
638 kernel_pbr_ipset_entry_add_del_status(ipset
,
639 ret
? ZEBRA_DPLANE_INSTALL_SUCCESS
640 : ZEBRA_DPLANE_INSTALL_FAILURE
);
643 void zebra_pbr_del_ipset_entry(struct zebra_pbr_ipset_entry
*ipset
)
645 struct zebra_pbr_ipset_entry
*lookup
;
647 lookup
= hash_lookup(zrouter
.ipset_entry_hash
, ipset
);
648 hook_call(zebra_pbr_ipset_entry_update
, 0, ipset
);
650 hash_release(zrouter
.ipset_entry_hash
, lookup
);
651 XFREE(MTYPE_TMP
, lookup
);
653 zlog_debug("%s: IPSet being deleted we know nothing about",
657 static void *pbr_iptable_alloc_intern(void *arg
)
659 struct zebra_pbr_iptable
*zpi
;
660 struct zebra_pbr_iptable
*new;
664 zpi
= (struct zebra_pbr_iptable
*)arg
;
666 new = XCALLOC(MTYPE_TMP
, sizeof(struct zebra_pbr_iptable
));
668 /* Deep structure copy */
669 memcpy(new, zpi
, sizeof(*zpi
));
670 new->interface_name_list
= list_new();
672 if (zpi
->interface_name_list
) {
673 for (ALL_LIST_ELEMENTS_RO(zpi
->interface_name_list
, ln
, ifname
))
674 listnode_add(new->interface_name_list
,
675 XSTRDUP(MTYPE_PBR_IPTABLE_IFNAME
, ifname
));
681 void zebra_pbr_add_iptable(struct zebra_pbr_iptable
*iptable
)
685 (void)hash_get(zrouter
.iptable_hash
, iptable
, pbr_iptable_alloc_intern
);
686 ret
= hook_call(zebra_pbr_iptable_update
, 1, iptable
);
687 kernel_pbr_iptable_add_del_status(iptable
,
688 ret
? ZEBRA_DPLANE_INSTALL_SUCCESS
689 : ZEBRA_DPLANE_INSTALL_FAILURE
);
692 void zebra_pbr_del_iptable(struct zebra_pbr_iptable
*iptable
)
694 struct zebra_pbr_iptable
*lookup
;
696 lookup
= hash_lookup(zrouter
.iptable_hash
, iptable
);
697 hook_call(zebra_pbr_iptable_update
, 0, iptable
);
699 struct listnode
*node
, *nnode
;
702 hash_release(zrouter
.iptable_hash
, lookup
);
703 for (ALL_LIST_ELEMENTS(iptable
->interface_name_list
,
704 node
, nnode
, name
)) {
705 XFREE(MTYPE_PBR_IPTABLE_IFNAME
, name
);
706 list_delete_node(iptable
->interface_name_list
,
709 list_delete(&iptable
->interface_name_list
);
710 XFREE(MTYPE_TMP
, lookup
);
712 zlog_debug("%s: IPTable being deleted we know nothing about",
717 * Handle success or failure of rule (un)install in the kernel.
719 void kernel_pbr_rule_add_del_status(struct zebra_pbr_rule
*rule
,
720 enum zebra_dplane_status res
)
723 case ZEBRA_DPLANE_INSTALL_SUCCESS
:
724 zsend_rule_notify_owner(rule
, ZAPI_RULE_INSTALLED
);
726 case ZEBRA_DPLANE_INSTALL_FAILURE
:
727 zsend_rule_notify_owner(rule
, ZAPI_RULE_FAIL_INSTALL
);
729 case ZEBRA_DPLANE_DELETE_SUCCESS
:
730 zsend_rule_notify_owner(rule
, ZAPI_RULE_REMOVED
);
732 case ZEBRA_DPLANE_DELETE_FAILURE
:
733 zsend_rule_notify_owner(rule
, ZAPI_RULE_FAIL_REMOVE
);
735 case ZEBRA_DPLANE_STATUS_NONE
:
741 * Handle success or failure of ipset (un)install in the kernel.
743 void kernel_pbr_ipset_add_del_status(struct zebra_pbr_ipset
*ipset
,
744 enum zebra_dplane_status res
)
747 case ZEBRA_DPLANE_INSTALL_SUCCESS
:
748 zsend_ipset_notify_owner(ipset
, ZAPI_IPSET_INSTALLED
);
750 case ZEBRA_DPLANE_INSTALL_FAILURE
:
751 zsend_ipset_notify_owner(ipset
, ZAPI_IPSET_FAIL_INSTALL
);
753 case ZEBRA_DPLANE_DELETE_SUCCESS
:
754 zsend_ipset_notify_owner(ipset
, ZAPI_IPSET_REMOVED
);
756 case ZEBRA_DPLANE_DELETE_FAILURE
:
757 zsend_ipset_notify_owner(ipset
, ZAPI_IPSET_FAIL_REMOVE
);
759 case ZEBRA_DPLANE_STATUS_NONE
:
765 * Handle success or failure of ipset (un)install in the kernel.
767 void kernel_pbr_ipset_entry_add_del_status(
768 struct zebra_pbr_ipset_entry
*ipset
,
769 enum zebra_dplane_status res
)
772 case ZEBRA_DPLANE_INSTALL_SUCCESS
:
773 zsend_ipset_entry_notify_owner(ipset
,
774 ZAPI_IPSET_ENTRY_INSTALLED
);
776 case ZEBRA_DPLANE_INSTALL_FAILURE
:
777 zsend_ipset_entry_notify_owner(ipset
,
778 ZAPI_IPSET_ENTRY_FAIL_INSTALL
);
780 case ZEBRA_DPLANE_DELETE_SUCCESS
:
781 zsend_ipset_entry_notify_owner(ipset
,
782 ZAPI_IPSET_ENTRY_REMOVED
);
784 case ZEBRA_DPLANE_DELETE_FAILURE
:
785 zsend_ipset_entry_notify_owner(ipset
,
786 ZAPI_IPSET_ENTRY_FAIL_REMOVE
);
788 case ZEBRA_DPLANE_STATUS_NONE
:
794 * Handle success or failure of ipset (un)install in the kernel.
796 void kernel_pbr_iptable_add_del_status(struct zebra_pbr_iptable
*iptable
,
797 enum zebra_dplane_status res
)
800 case ZEBRA_DPLANE_INSTALL_SUCCESS
:
801 zsend_iptable_notify_owner(iptable
, ZAPI_IPTABLE_INSTALLED
);
803 case ZEBRA_DPLANE_INSTALL_FAILURE
:
804 zsend_iptable_notify_owner(iptable
, ZAPI_IPTABLE_FAIL_INSTALL
);
806 case ZEBRA_DPLANE_DELETE_SUCCESS
:
807 zsend_iptable_notify_owner(iptable
,
808 ZAPI_IPTABLE_REMOVED
);
810 case ZEBRA_DPLANE_DELETE_FAILURE
:
811 zsend_iptable_notify_owner(iptable
,
812 ZAPI_IPTABLE_FAIL_REMOVE
);
814 case ZEBRA_DPLANE_STATUS_NONE
:
820 * Handle rule delete notification from kernel.
822 int kernel_pbr_rule_del(struct zebra_pbr_rule
*rule
)
827 struct zebra_pbr_ipset_entry_unique_display
{
828 struct zebra_pbr_ipset
*zpi
;
830 struct zebra_ns
*zns
;
833 struct zebra_pbr_env_display
{
834 struct zebra_ns
*zns
;
839 static const char *zebra_pbr_prefix2str(union prefixconstptr pu
,
842 const struct prefix
*p
= pu
.p
;
843 char buf
[PREFIX2STR_BUFFER
];
845 if (p
->family
== AF_INET
&& p
->prefixlen
== IPV4_MAX_PREFIXLEN
) {
846 snprintf(str
, size
, "%s", inet_ntop(p
->family
, &p
->u
.prefix
,
847 buf
, PREFIX2STR_BUFFER
));
850 return prefix2str(pu
, str
, size
);
853 static void zebra_pbr_display_icmp(struct vty
*vty
,
854 struct zebra_pbr_ipset_entry
*zpie
)
856 char decoded_str
[20];
859 /* range icmp type */
860 if (zpie
->src_port_max
|| zpie
->dst_port_max
) {
861 vty_out(vty
, ":icmp:[type <%d:%d>;code <%d:%d>",
862 zpie
->src_port_min
, zpie
->src_port_max
,
863 zpie
->dst_port_min
, zpie
->dst_port_max
);
865 port
= ((zpie
->src_port_min
<< 8) & 0xff00) +
866 (zpie
->dst_port_min
& 0xff);
867 memset(decoded_str
, 0, sizeof(decoded_str
));
868 sprintf(decoded_str
, "%d/%d",
871 vty_out(vty
, ":icmp:%s",
872 lookup_msg(icmp_typecode_str
,
877 static void zebra_pbr_display_port(struct vty
*vty
, uint32_t filter_bm
,
878 uint16_t port_min
, uint16_t port_max
,
881 if (!(filter_bm
& PBR_FILTER_PROTO
)) {
883 vty_out(vty
, ":udp/tcp:%d-%d",
886 vty_out(vty
, ":udp/tcp:%d",
890 vty_out(vty
, ":proto %d:%d-%d",
891 proto
, port_min
, port_max
);
893 vty_out(vty
, ":proto %d:%d",
898 static int zebra_pbr_show_ipset_entry_walkcb(struct hash_bucket
*bucket
,
901 struct zebra_pbr_ipset_entry_unique_display
*unique
=
902 (struct zebra_pbr_ipset_entry_unique_display
*)arg
;
903 struct zebra_pbr_ipset
*zpi
= unique
->zpi
;
904 struct vty
*vty
= unique
->vty
;
905 struct zebra_pbr_ipset_entry
*zpie
=
906 (struct zebra_pbr_ipset_entry
*)bucket
->data
;
907 uint64_t pkts
= 0, bytes
= 0;
910 if (zpie
->backpointer
!= zpi
)
911 return HASHWALK_CONTINUE
;
913 if ((zpi
->type
== IPSET_NET_NET
) ||
914 (zpi
->type
== IPSET_NET_PORT_NET
)) {
915 char buf
[PREFIX_STRLEN
];
917 zebra_pbr_prefix2str(&(zpie
->src
), buf
, sizeof(buf
));
918 vty_out(vty
, "\tfrom %s", buf
);
919 if (zpie
->filter_bm
& PBR_FILTER_SRC_PORT
&&
920 zpie
->proto
!= IPPROTO_ICMP
)
921 zebra_pbr_display_port(vty
, zpie
->filter_bm
,
925 vty_out(vty
, " to ");
926 zebra_pbr_prefix2str(&(zpie
->dst
), buf
, sizeof(buf
));
927 vty_out(vty
, "%s", buf
);
928 if (zpie
->filter_bm
& PBR_FILTER_DST_PORT
&&
929 zpie
->proto
!= IPPROTO_ICMP
)
930 zebra_pbr_display_port(vty
, zpie
->filter_bm
,
934 if (zpie
->proto
== IPPROTO_ICMP
)
935 zebra_pbr_display_icmp(vty
, zpie
);
936 } else if ((zpi
->type
== IPSET_NET
) ||
937 (zpi
->type
== IPSET_NET_PORT
)) {
938 char buf
[PREFIX_STRLEN
];
940 if (zpie
->filter_bm
& PBR_FILTER_SRC_IP
) {
941 zebra_pbr_prefix2str(&(zpie
->src
), buf
, sizeof(buf
));
942 vty_out(vty
, "\tfrom %s", buf
);
944 if (zpie
->filter_bm
& PBR_FILTER_SRC_PORT
&&
945 zpie
->proto
!= IPPROTO_ICMP
)
946 zebra_pbr_display_port(vty
, zpie
->filter_bm
,
950 if (zpie
->filter_bm
& PBR_FILTER_DST_IP
) {
951 zebra_pbr_prefix2str(&(zpie
->dst
), buf
, sizeof(buf
));
952 vty_out(vty
, "\tto %s", buf
);
954 if (zpie
->filter_bm
& PBR_FILTER_DST_PORT
&&
955 zpie
->proto
!= IPPROTO_ICMP
)
956 zebra_pbr_display_port(vty
, zpie
->filter_bm
,
960 if (zpie
->proto
== IPPROTO_ICMP
)
961 zebra_pbr_display_icmp(vty
, zpie
);
963 vty_out(vty
, " (%u)\n", zpie
->unique
);
965 ret
= hook_call(zebra_pbr_ipset_entry_get_stat
, zpie
, &pkts
,
968 vty_out(vty
, "\t pkts %" PRIu64
", bytes %" PRIu64
"\n",
970 return HASHWALK_CONTINUE
;
973 static int zebra_pbr_show_ipset_walkcb(struct hash_bucket
*bucket
, void *arg
)
975 struct zebra_pbr_env_display
*uniqueipset
=
976 (struct zebra_pbr_env_display
*)arg
;
977 struct zebra_pbr_ipset
*zpi
= (struct zebra_pbr_ipset
*)bucket
->data
;
978 struct zebra_pbr_ipset_entry_unique_display unique
;
979 struct vty
*vty
= uniqueipset
->vty
;
980 struct zebra_ns
*zns
= uniqueipset
->zns
;
982 vty_out(vty
, "IPset %s type %s\n", zpi
->ipset_name
,
983 zebra_pbr_ipset_type2str(zpi
->type
));
987 hash_walk(zrouter
.ipset_entry_hash
, zebra_pbr_show_ipset_entry_walkcb
,
990 return HASHWALK_CONTINUE
;
993 size_t zebra_pbr_tcpflags_snprintf(char *buffer
, size_t len
,
996 size_t len_written
= 0;
997 static struct message nt
= {0};
998 const struct message
*pnt
;
1001 for (pnt
= tcp_value_str
;
1002 memcmp(pnt
, &nt
, sizeof(struct message
)); pnt
++)
1003 if (pnt
->key
& tcp_val
) {
1004 len_written
+= snprintf(buffer
+ len_written
,
1015 void zebra_pbr_show_ipset_list(struct vty
*vty
, char *ipsetname
)
1017 struct zebra_pbr_ipset
*zpi
;
1018 struct zebra_ns
*zns
= zebra_ns_lookup(NS_DEFAULT
);
1019 struct zebra_pbr_ipset_entry_unique_display unique
;
1020 struct zebra_pbr_env_display uniqueipset
;
1023 zpi
= zebra_pbr_lookup_ipset_pername(ipsetname
);
1025 vty_out(vty
, "No IPset %s found\n", ipsetname
);
1028 vty_out(vty
, "IPset %s type %s\n", ipsetname
,
1029 zebra_pbr_ipset_type2str(zpi
->type
));
1034 hash_walk(zrouter
.ipset_entry_hash
,
1035 zebra_pbr_show_ipset_entry_walkcb
, &unique
);
1038 uniqueipset
.zns
= zns
;
1039 uniqueipset
.vty
= vty
;
1040 uniqueipset
.name
= NULL
;
1041 hash_walk(zrouter
.ipset_hash
, zebra_pbr_show_ipset_walkcb
,
1045 struct pbr_rule_fwmark_lookup
{
1046 struct zebra_pbr_rule
*ptr
;
1050 static int zebra_pbr_rule_lookup_fwmark_walkcb(struct hash_bucket
*bucket
,
1053 struct pbr_rule_fwmark_lookup
*iprule
=
1054 (struct pbr_rule_fwmark_lookup
*)arg
;
1055 struct zebra_pbr_rule
*zpr
= (struct zebra_pbr_rule
*)bucket
->data
;
1057 if (iprule
->fwmark
== zpr
->rule
.filter
.fwmark
) {
1059 return HASHWALK_ABORT
;
1061 return HASHWALK_CONTINUE
;
1064 static void zebra_pbr_show_iptable_unit(struct zebra_pbr_iptable
*iptable
,
1066 struct zebra_ns
*zns
)
1069 uint64_t pkts
= 0, bytes
= 0;
1071 vty_out(vty
, "IPtable %s action %s (%u)\n", iptable
->ipset_name
,
1072 iptable
->action
== ZEBRA_IPTABLES_DROP
? "drop" : "redirect",
1074 if (iptable
->type
== IPSET_NET_PORT
||
1075 iptable
->type
== IPSET_NET_PORT_NET
) {
1076 if (!(iptable
->filter_bm
& MATCH_ICMP_SET
)) {
1077 if (iptable
->filter_bm
& PBR_FILTER_DST_PORT
)
1078 vty_out(vty
, "\t lookup dst port\n");
1079 else if (iptable
->filter_bm
& PBR_FILTER_SRC_PORT
)
1080 vty_out(vty
, "\t lookup src port\n");
1083 if (iptable
->pkt_len_min
|| iptable
->pkt_len_max
) {
1084 if (!iptable
->pkt_len_max
)
1085 vty_out(vty
, "\t pkt len %u\n",
1086 iptable
->pkt_len_min
);
1088 vty_out(vty
, "\t pkt len [%u;%u]\n",
1089 iptable
->pkt_len_min
,
1090 iptable
->pkt_len_max
);
1092 if (iptable
->tcp_flags
|| iptable
->tcp_mask_flags
) {
1093 char tcp_flag_str
[64];
1094 char tcp_flag_mask_str
[64];
1096 zebra_pbr_tcpflags_snprintf(tcp_flag_str
,
1097 sizeof(tcp_flag_str
),
1098 iptable
->tcp_flags
);
1099 zebra_pbr_tcpflags_snprintf(tcp_flag_mask_str
,
1100 sizeof(tcp_flag_mask_str
),
1101 iptable
->tcp_mask_flags
);
1102 vty_out(vty
, "\t tcpflags [%s/%s]\n",
1103 tcp_flag_str
, tcp_flag_mask_str
);
1105 if (iptable
->filter_bm
& (MATCH_DSCP_SET
| MATCH_DSCP_INVERSE_SET
)) {
1106 vty_out(vty
, "\t dscp %s %d\n",
1107 iptable
->filter_bm
& MATCH_DSCP_INVERSE_SET
?
1108 "not" : "", iptable
->dscp_value
);
1110 if (iptable
->fragment
) {
1113 sprintf(val_str
, "%d", iptable
->fragment
);
1114 vty_out(vty
, "\t fragment%s %s\n",
1115 iptable
->filter_bm
& MATCH_FRAGMENT_INVERSE_SET
?
1116 " not" : "", lookup_msg(fragment_value_str
,
1117 iptable
->fragment
, val_str
));
1119 if (iptable
->protocol
) {
1120 vty_out(vty
, "\t protocol %d\n",
1123 ret
= hook_call(zebra_pbr_iptable_get_stat
, iptable
, &pkts
,
1125 if (ret
&& pkts
> 0)
1126 vty_out(vty
, "\t pkts %" PRIu64
", bytes %" PRIu64
"\n",
1128 if (iptable
->action
!= ZEBRA_IPTABLES_DROP
) {
1129 struct pbr_rule_fwmark_lookup prfl
;
1131 prfl
.fwmark
= iptable
->fwmark
;
1133 hash_walk(zrouter
.rules_hash
,
1134 &zebra_pbr_rule_lookup_fwmark_walkcb
, &prfl
);
1136 struct zebra_pbr_rule
*zpr
= prfl
.ptr
;
1138 vty_out(vty
, "\t table %u, fwmark %u\n",
1139 zpr
->rule
.action
.table
,
1145 static int zebra_pbr_show_iptable_walkcb(struct hash_bucket
*bucket
, void *arg
)
1147 struct zebra_pbr_iptable
*iptable
=
1148 (struct zebra_pbr_iptable
*)bucket
->data
;
1149 struct zebra_pbr_env_display
*env
= (struct zebra_pbr_env_display
*)arg
;
1150 struct vty
*vty
= env
->vty
;
1151 struct zebra_ns
*zns
= env
->zns
;
1152 char *iptable_name
= env
->name
;
1155 zebra_pbr_show_iptable_unit(iptable
, vty
, zns
);
1156 else if (!strncmp(iptable_name
,
1157 iptable
->ipset_name
,
1158 ZEBRA_IPSET_NAME_SIZE
))
1159 zebra_pbr_show_iptable_unit(iptable
, vty
, zns
);
1160 return HASHWALK_CONTINUE
;
1163 void zebra_pbr_show_iptable(struct vty
*vty
, char *iptable_name
)
1165 struct zebra_ns
*zns
= zebra_ns_lookup(NS_DEFAULT
);
1166 struct zebra_pbr_env_display env
;
1170 env
.name
= iptable_name
;
1171 hash_walk(zrouter
.iptable_hash
, zebra_pbr_show_iptable_walkcb
, &env
);
1174 void zebra_pbr_iptable_update_interfacelist(struct stream
*s
,
1175 struct zebra_pbr_iptable
*zpi
)
1177 uint32_t i
= 0, index
;
1178 struct interface
*ifp
;
1181 for (i
= 0; i
< zpi
->nb_interface
; i
++) {
1182 STREAM_GETL(s
, index
);
1183 ifp
= if_lookup_by_index(index
, zpi
->vrf_id
);
1186 name
= XSTRDUP(MTYPE_PBR_IPTABLE_IFNAME
, ifp
->name
);
1187 listnode_add(zpi
->interface_name_list
, name
);