xref: /freebsd/lib/libpfctl/libpfctl.c (revision 044243fcc9b4c639cf5655e37b98478bcb312590)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2021 Rubicon Communications, LLC (Netgate)
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  *    - Redistributions of source code must retain the above copyright
12  *      notice, this list of conditions and the following disclaimer.
13  *    - Redistributions in binary form must reproduce the above
14  *      copyright notice, this list of conditions and the following
15  *      disclaimer in the documentation and/or other materials provided
16  *      with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 
34 #include <sys/ioctl.h>
35 #include <sys/nv.h>
36 #include <sys/queue.h>
37 #include <sys/types.h>
38 
39 #include <net/if.h>
40 #include <net/pfvar.h>
41 #include <netinet/in.h>
42 
43 #include <netpfil/pf/pf_nl.h>
44 #include <netlink/netlink.h>
45 #include <netlink/netlink_generic.h>
46 #include <netlink/netlink_snl.h>
47 #include <netlink/netlink_snl_generic.h>
48 #include <netlink/netlink_snl_route.h>
49 
50 #include <assert.h>
51 #include <err.h>
52 #include <errno.h>
53 #include <fcntl.h>
54 #include <stdlib.h>
55 #include <string.h>
56 
57 #include "libpfctl.h"
58 
59 struct pfctl_handle {
60 	int fd;
61 	struct snl_state ss;
62 };
63 
64 const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = {
65 	"never",
66 	"always",
67 	"adaptive"
68 };
69 
70 static int	_pfctl_clear_states(int , const struct pfctl_kill *,
71 		    unsigned int *, uint64_t);
72 
73 struct pfctl_handle *
74 pfctl_open(const char *pf_device)
75 {
76 	struct pfctl_handle *h;
77 
78 	h = calloc(1, sizeof(struct pfctl_handle));
79 	h->fd = -1;
80 
81 	h->fd = open(pf_device, O_RDWR);
82 	if (h->fd < 0)
83 		goto error;
84 
85 	if (!snl_init(&h->ss, NETLINK_GENERIC))
86 		goto error;
87 
88 	return (h);
89 error:
90 	close(h->fd);
91 	snl_free(&h->ss);
92 	free(h);
93 
94 	return (NULL);
95 }
96 
97 void
98 pfctl_close(struct pfctl_handle *h)
99 {
100 	close(h->fd);
101 	snl_free(&h->ss);
102 	free(h);
103 }
104 
105 int
106 pfctl_fd(struct pfctl_handle *h)
107 {
108 	return (h->fd);
109 }
110 
111 static int
112 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl)
113 {
114 	struct pfioc_nv nv;
115 	void *data;
116 	size_t nvlen;
117 	int ret;
118 
119 	data = nvlist_pack(*nvl, &nvlen);
120 	if (nvlen > size)
121 		size = nvlen;
122 
123 retry:
124 	nv.data = malloc(size);
125 	if (nv.data == NULL) {
126 		ret = ENOMEM;
127 		goto out;
128 	}
129 
130 	memcpy(nv.data, data, nvlen);
131 
132 	nv.len = nvlen;
133 	nv.size = size;
134 
135 	ret = ioctl(dev, cmd, &nv);
136 	if (ret == -1 && errno == ENOSPC) {
137 		size *= 2;
138 		free(nv.data);
139 		goto retry;
140 	}
141 
142 	nvlist_destroy(*nvl);
143 	*nvl = NULL;
144 
145 	if (ret == 0) {
146 		*nvl = nvlist_unpack(nv.data, nv.len, 0);
147 		if (*nvl == NULL) {
148 			ret = EIO;
149 			goto out;
150 		}
151 	} else {
152 		ret = errno;
153 	}
154 
155 out:
156 	free(data);
157 	free(nv.data);
158 
159 	return (ret);
160 }
161 
162 static void
163 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems,
164     uint8_t *numbers, size_t *nelems)
165 {
166 	const uint64_t *tmp;
167 	size_t elems;
168 
169 	tmp = nvlist_get_number_array(nvl, name, &elems);
170 	assert(elems <= maxelems);
171 
172 	for (size_t i = 0; i < elems; i++)
173 		numbers[i] = tmp[i];
174 
175 	if (nelems)
176 		*nelems = elems;
177 }
178 
179 static void
180 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems,
181     uint16_t *numbers, size_t *nelems)
182 {
183 	const uint64_t *tmp;
184 	size_t elems;
185 
186 	tmp = nvlist_get_number_array(nvl, name, &elems);
187 	assert(elems <= maxelems);
188 
189 	for (size_t i = 0; i < elems; i++)
190 		numbers[i] = tmp[i];
191 
192 	if (nelems)
193 		*nelems = elems;
194 }
195 
196 static void
197 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems,
198     uint32_t *numbers, size_t *nelems)
199 {
200 	const uint64_t *tmp;
201 	size_t elems;
202 
203 	tmp = nvlist_get_number_array(nvl, name, &elems);
204 
205 	for (size_t i = 0; i < elems && i < maxelems; i++)
206 		numbers[i] = tmp[i];
207 
208 	if (nelems)
209 		*nelems = elems;
210 }
211 
212 static void
213 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems,
214     uint64_t *numbers, size_t *nelems)
215 {
216 	const uint64_t *tmp;
217 	size_t elems;
218 
219 	tmp = nvlist_get_number_array(nvl, name, &elems);
220 	assert(elems <= maxelems);
221 
222 	for (size_t i = 0; i < elems; i++)
223 		numbers[i] = tmp[i];
224 
225 	if (nelems)
226 		*nelems = elems;
227 }
228 
229 int
230 pfctl_startstop(struct pfctl_handle *h, int start)
231 {
232 	struct snl_errmsg_data e = {};
233 	struct snl_writer nw;
234 	struct nlmsghdr *hdr;
235 	uint32_t seq_id;
236 	int family_id;
237 
238 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
239 	if (family_id == 0)
240 		return (ENOTSUP);
241 
242 	snl_init_writer(&h->ss, &nw);
243 	hdr = snl_create_genl_msg_request(&nw, family_id,
244 	    start ? PFNL_CMD_START : PFNL_CMD_STOP);
245 
246 	hdr = snl_finalize_msg(&nw);
247 	if (hdr == NULL)
248 		return (ENOMEM);
249 	seq_id = hdr->nlmsg_seq;
250 
251 	snl_send_message(&h->ss, hdr);
252 
253 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
254 	}
255 
256 	return (e.error);
257 }
258 
259 static void
260 _pfctl_get_status_counters(const nvlist_t *nvl,
261     struct pfctl_status_counters *counters)
262 {
263 	const uint64_t		*ids, *counts;
264 	const char *const	*names;
265 	size_t id_len, counter_len, names_len;
266 
267 	ids = nvlist_get_number_array(nvl, "ids", &id_len);
268 	counts = nvlist_get_number_array(nvl, "counters", &counter_len);
269 	names = nvlist_get_string_array(nvl, "names", &names_len);
270 	assert(id_len == counter_len);
271 	assert(counter_len == names_len);
272 
273 	TAILQ_INIT(counters);
274 
275 	for (size_t i = 0; i < id_len; i++) {
276 		struct pfctl_status_counter *c;
277 
278 		c = malloc(sizeof(*c));
279 		if (c == NULL)
280 			continue;
281 
282 		c->id = ids[i];
283 		c->counter = counts[i];
284 		c->name = strdup(names[i]);
285 
286 		TAILQ_INSERT_TAIL(counters, c, entry);
287 	}
288 }
289 
290 struct pfctl_status *
291 pfctl_get_status(int dev)
292 {
293 	struct pfctl_status	*status;
294 	nvlist_t	*nvl;
295 	size_t		 len;
296 	const void	*chksum;
297 
298 	status = calloc(1, sizeof(*status));
299 	if (status == NULL)
300 		return (NULL);
301 
302 	nvl = nvlist_create(0);
303 
304 	if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
305 		nvlist_destroy(nvl);
306 		free(status);
307 		return (NULL);
308 	}
309 
310 	status->running = nvlist_get_bool(nvl, "running");
311 	status->since = nvlist_get_number(nvl, "since");
312 	status->debug = nvlist_get_number(nvl, "debug");
313 	status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
314 	status->states = nvlist_get_number(nvl, "states");
315 	status->src_nodes = nvlist_get_number(nvl, "src_nodes");
316 	status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
317 	status->reass = nvlist_get_number(nvl, "reass");
318 
319 	strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
320 	    IFNAMSIZ);
321 	chksum = nvlist_get_binary(nvl, "chksum", &len);
322 	assert(len == PF_MD5_DIGEST_LENGTH);
323 	memcpy(status->pf_chksum, chksum, len);
324 
325 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
326 	    &status->counters);
327 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
328 	    &status->lcounters);
329 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
330 	    &status->fcounters);
331 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
332 	    &status->scounters);
333 
334 	pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
335 	    (uint64_t *)status->pcounters, NULL);
336 	pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
337 	    (uint64_t *)status->bcounters, NULL);
338 
339 	nvlist_destroy(nvl);
340 
341 	return (status);
342 }
343 
344 static uint64_t
345 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
346 {
347 	struct pfctl_status_counter *c;
348 
349 	TAILQ_FOREACH(c, counters, entry) {
350 		if (c->id == id)
351 			return (c->counter);
352 	}
353 
354 	return (0);
355 }
356 
357 uint64_t
358 pfctl_status_counter(struct pfctl_status *status, int id)
359 {
360 	return (_pfctl_status_counter(&status->counters, id));
361 }
362 
363 uint64_t
364 pfctl_status_lcounter(struct pfctl_status *status, int id)
365 {
366 	return (_pfctl_status_counter(&status->lcounters, id));
367 }
368 
369 uint64_t
370 pfctl_status_fcounter(struct pfctl_status *status, int id)
371 {
372 	return (_pfctl_status_counter(&status->fcounters, id));
373 }
374 
375 uint64_t
376 pfctl_status_scounter(struct pfctl_status *status, int id)
377 {
378 	return (_pfctl_status_counter(&status->scounters, id));
379 }
380 
381 void
382 pfctl_free_status(struct pfctl_status *status)
383 {
384 	struct pfctl_status_counter *c, *tmp;
385 
386 	if (status == NULL)
387 		return;
388 
389 	TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
390 		free(c->name);
391 		free(c);
392 	}
393 	TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
394 		free(c->name);
395 		free(c);
396 	}
397 	TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
398 		free(c->name);
399 		free(c);
400 	}
401 	TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
402 		free(c->name);
403 		free(c);
404 	}
405 
406 	free(status);
407 }
408 
409 static void
410 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
411     const struct pf_addr *addr)
412 {
413 	nvlist_t *nvl = nvlist_create(0);
414 
415 	nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
416 
417 	nvlist_add_nvlist(nvparent, name, nvl);
418 	nvlist_destroy(nvl);
419 }
420 
421 static void
422 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
423 {
424 	size_t len;
425 	const void *data;
426 
427 	data = nvlist_get_binary(nvl, "addr", &len);
428 	assert(len == sizeof(struct pf_addr));
429 	memcpy(addr, data, len);
430 }
431 
432 static void
433 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
434     const struct pf_addr_wrap *addr)
435 {
436 	nvlist_t *nvl = nvlist_create(0);
437 
438 	nvlist_add_number(nvl, "type", addr->type);
439 	nvlist_add_number(nvl, "iflags", addr->iflags);
440 	if (addr->type == PF_ADDR_DYNIFTL)
441 		nvlist_add_string(nvl, "ifname", addr->v.ifname);
442 	if (addr->type == PF_ADDR_TABLE)
443 		nvlist_add_string(nvl, "tblname", addr->v.tblname);
444 	pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
445 	pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
446 
447 	nvlist_add_nvlist(nvparent, name, nvl);
448 	nvlist_destroy(nvl);
449 }
450 
451 static void
452 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
453 {
454 	bzero(addr, sizeof(*addr));
455 
456 	addr->type = nvlist_get_number(nvl, "type");
457 	addr->iflags = nvlist_get_number(nvl, "iflags");
458 	if (addr->type == PF_ADDR_DYNIFTL) {
459 		strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
460 		    IFNAMSIZ);
461 		addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
462 	}
463 	if (addr->type == PF_ADDR_TABLE) {
464 		strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
465 		    PF_TABLE_NAME_SIZE);
466 		addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
467 	}
468 
469 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
470 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
471 }
472 
473 static void
474 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
475     const struct pf_rule_addr *addr)
476 {
477 	uint64_t ports[2];
478 	nvlist_t *nvl = nvlist_create(0);
479 
480 	pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
481 	ports[0] = addr->port[0];
482 	ports[1] = addr->port[1];
483 	nvlist_add_number_array(nvl, "port", ports, 2);
484 	nvlist_add_number(nvl, "neg", addr->neg);
485 	nvlist_add_number(nvl, "port_op", addr->port_op);
486 
487 	nvlist_add_nvlist(nvparent, name, nvl);
488 	nvlist_destroy(nvl);
489 }
490 
491 static void
492 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
493 {
494 	pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
495 
496 	pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
497 	addr->neg = nvlist_get_number(nvl, "neg");
498 	addr->port_op = nvlist_get_number(nvl, "port_op");
499 }
500 
501 static void
502 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
503 {
504 	mape->offset = nvlist_get_number(nvl, "offset");
505 	mape->psidlen = nvlist_get_number(nvl, "psidlen");
506 	mape->psid = nvlist_get_number(nvl, "psid");
507 }
508 
509 static void
510 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
511 {
512 	size_t len;
513 	const void *data;
514 
515 	data = nvlist_get_binary(nvl, "key", &len);
516 	assert(len == sizeof(pool->key));
517 	memcpy(&pool->key, data, len);
518 
519 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
520 
521 	pool->tblidx = nvlist_get_number(nvl, "tblidx");
522 	pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
523 	pool->opts = nvlist_get_number(nvl, "opts");
524 
525 	if (nvlist_exists_nvlist(nvl, "mape"))
526 		pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
527 }
528 
529 static void
530 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
531 {
532 	pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
533 	uid->op = nvlist_get_number(nvl, "op");
534 }
535 
536 static void
537 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
538 {
539 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
540 	rule->divert.port = nvlist_get_number(nvl, "port");
541 }
542 
543 static void
544 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
545 {
546 	const uint64_t *skip;
547 	const char *const *labels;
548 	size_t skipcount, labelcount;
549 
550 	rule->nr = nvlist_get_number(nvl, "nr");
551 
552 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
553 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
554 
555 	skip = nvlist_get_number_array(nvl, "skip", &skipcount);
556 	assert(skip);
557 	assert(skipcount == PF_SKIP_COUNT);
558 	for (int i = 0; i < PF_SKIP_COUNT; i++)
559 		rule->skip[i].nr = skip[i];
560 
561 	labels = nvlist_get_string_array(nvl, "labels", &labelcount);
562 	assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
563 	for (size_t i = 0; i < labelcount; i++)
564 		strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
565 	rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
566 	strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
567 	strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
568 	strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
569 	strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
570 	    PF_TAG_NAME_SIZE);
571 	strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
572 	    PF_TAG_NAME_SIZE);
573 
574 	strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
575 	    PF_TABLE_NAME_SIZE);
576 
577 	pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rpool);
578 
579 	rule->evaluations = nvlist_get_number(nvl, "evaluations");
580 	pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
581 	pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
582 
583 	if (nvlist_exists_number(nvl, "timestamp")) {
584 		rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
585 	}
586 
587 	rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
588 
589 	rule->rtableid = nvlist_get_number(nvl, "rtableid");
590 	pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
591 	rule->max_states = nvlist_get_number(nvl, "max_states");
592 	rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
593 	rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
594 	rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
595 	rule->max_src_conn_rate.limit =
596 	    nvlist_get_number(nvl, "max_src_conn_rate.limit");
597 	rule->max_src_conn_rate.seconds =
598 	    nvlist_get_number(nvl, "max_src_conn_rate.seconds");
599 	rule->qid = nvlist_get_number(nvl, "qid");
600 	rule->pqid = nvlist_get_number(nvl, "pqid");
601 	rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
602 	rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
603 	rule->free_flags = nvlist_get_number(nvl, "dnflags");
604 	rule->prob = nvlist_get_number(nvl, "prob");
605 	rule->cuid = nvlist_get_number(nvl, "cuid");
606 	rule->cpid = nvlist_get_number(nvl, "cpid");
607 
608 	rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
609 	rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
610 	rule->max_mss = nvlist_get_number(nvl, "max_mss");
611 	rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
612 
613 	pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
614 	pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
615 	    (struct pf_rule_uid *)&rule->gid);
616 
617 	rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
618 	rule->action = nvlist_get_number(nvl, "action");
619 	rule->direction = nvlist_get_number(nvl, "direction");
620 	rule->log = nvlist_get_number(nvl, "log");
621 	rule->logif = nvlist_get_number(nvl, "logif");
622 	rule->quick = nvlist_get_number(nvl, "quick");
623 	rule->ifnot = nvlist_get_number(nvl, "ifnot");
624 	rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
625 	rule->natpass = nvlist_get_number(nvl, "natpass");
626 
627 	rule->keep_state = nvlist_get_number(nvl, "keep_state");
628 	rule->af = nvlist_get_number(nvl, "af");
629 	rule->proto = nvlist_get_number(nvl, "proto");
630 	rule->type = nvlist_get_number(nvl, "type");
631 	rule->code = nvlist_get_number(nvl, "code");
632 	rule->flags = nvlist_get_number(nvl, "flags");
633 	rule->flagset = nvlist_get_number(nvl, "flagset");
634 	rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
635 	rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
636 	rule->rt = nvlist_get_number(nvl, "rt");
637 	rule->return_ttl  = nvlist_get_number(nvl, "return_ttl");
638 	rule->tos = nvlist_get_number(nvl, "tos");
639 	rule->set_tos = nvlist_get_number(nvl, "set_tos");
640 	rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
641 	rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
642 
643 	rule->flush = nvlist_get_number(nvl, "flush");
644 	rule->prio = nvlist_get_number(nvl, "prio");
645 	pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
646 
647 	pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
648 
649 	rule->states_cur = nvlist_get_number(nvl, "states_cur");
650 	rule->states_tot = nvlist_get_number(nvl, "states_tot");
651 	rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
652 }
653 
654 static void
655 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
656 {
657 	static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
658 	size_t len;
659 	const void *data;
660 
661 	data = nvlist_get_binary(nvl, "addr", &len);
662 	assert(len == sizeof(addr->addr));
663 	memcpy(addr->addr, data, sizeof(addr->addr));
664 
665 	data = nvlist_get_binary(nvl, "mask", &len);
666 	assert(len == sizeof(addr->mask));
667 	memcpy(addr->mask, data, sizeof(addr->mask));
668 
669 	addr->neg = nvlist_get_bool(nvl, "neg");
670 
671 	/* To make checks for 'is this address set?' easier. */
672 	addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
673 }
674 
675 static nvlist_t *
676 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
677 {
678 	nvlist_t *nvl;
679 
680 	nvl = nvlist_create(0);
681 	if (nvl == NULL)
682 		return (NULL);
683 
684 	nvlist_add_bool(nvl, "neg", addr->neg);
685 	nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
686 	nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
687 
688 	return (nvl);
689 }
690 
691 static void
692 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
693 {
694 	const char *const *labels;
695 	size_t labelcount, i;
696 
697 	rule->nr = nvlist_get_number(nvl, "nr");
698 	rule->quick = nvlist_get_bool(nvl, "quick");
699 	strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
700 	rule->ifnot = nvlist_get_bool(nvl, "ifnot");
701 	rule->direction = nvlist_get_number(nvl, "direction");
702 	rule->proto = nvlist_get_number(nvl, "proto");
703 	strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
704 	    PF_TAG_NAME_SIZE);
705 	rule->match_tag = nvlist_get_number(nvl, "match_tag");
706 	rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
707 
708 	labels = nvlist_get_string_array(nvl, "labels", &labelcount);
709 	assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
710 	for (i = 0; i < labelcount; i++)
711 		strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
712 	rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
713 
714 	pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
715 	    &rule->src);
716 	pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
717 	    &rule->dst);
718 
719 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
720 	    &rule->ipsrc);
721 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
722 	    &rule->ipdst);
723 
724 	rule->evaluations = nvlist_get_number(nvl, "evaluations");
725 	rule->packets[0] = nvlist_get_number(nvl, "packets-in");
726 	rule->packets[1] = nvlist_get_number(nvl, "packets-out");
727 	rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
728 	rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
729 
730 	if (nvlist_exists_number(nvl, "timestamp")) {
731 		rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
732 	}
733 
734 	strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
735 	strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
736 	    PF_TAG_NAME_SIZE);
737 
738 	rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
739 	rule->dnflags = nvlist_get_number(nvl, "dnflags");
740 
741 	rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
742 	rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
743 
744 	strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
745 	    IFNAMSIZ);
746 
747 	rule->action = nvlist_get_number(nvl, "action");
748 }
749 
750 int
751 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
752     const char *path)
753 {
754 	nvlist_t *nvl;
755 	int ret;
756 
757 	bzero(ri, sizeof(*ri));
758 
759 	nvl = nvlist_create(0);
760 	nvlist_add_string(nvl, "path", path);
761 
762 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
763 		goto out;
764 
765 	ri->nr = nvlist_get_number(nvl, "nr");
766 
767 out:
768 	nvlist_destroy(nvl);
769 	return (ret);
770 }
771 
772 int
773 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
774     struct pfctl_eth_ruleset_info *ri)
775 {
776 	nvlist_t *nvl;
777 	int ret;
778 
779 	bzero(ri, sizeof(*ri));
780 
781 	nvl = nvlist_create(0);
782 	nvlist_add_string(nvl, "path", path);
783 	nvlist_add_number(nvl, "nr", nr);
784 
785 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
786 		goto out;
787 
788 	ri->nr = nvlist_get_number(nvl, "nr");
789 	strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
790 	strlcpy(ri->name, nvlist_get_string(nvl, "name"),
791 	    PF_ANCHOR_NAME_SIZE);
792 
793 out:
794 	nvlist_destroy(nvl);
795 	return (ret);
796 }
797 
798 int
799 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
800     const char *path)
801 {
802 	nvlist_t *nvl;
803 	int ret;
804 
805 	bzero(rules, sizeof(*rules));
806 
807 	nvl = nvlist_create(0);
808 	nvlist_add_string(nvl, "anchor", path);
809 
810 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
811 		goto out;
812 
813 	rules->nr = nvlist_get_number(nvl, "nr");
814 	rules->ticket = nvlist_get_number(nvl, "ticket");
815 
816 out:
817 	nvlist_destroy(nvl);
818 	return (ret);
819 }
820 
821 int
822 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
823     const char *path, struct pfctl_eth_rule *rule, bool clear,
824     char *anchor_call)
825 {
826 	nvlist_t *nvl;
827 	int ret;
828 
829 	nvl = nvlist_create(0);
830 
831 	nvlist_add_string(nvl, "anchor", path);
832 	nvlist_add_number(nvl, "ticket", ticket);
833 	nvlist_add_number(nvl, "nr", nr);
834 	nvlist_add_bool(nvl, "clear", clear);
835 
836 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
837 		goto out;
838 
839 	pfctl_nveth_rule_to_eth_rule(nvl, rule);
840 
841 	if (anchor_call)
842 		strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
843 		    MAXPATHLEN);
844 
845 out:
846 	nvlist_destroy(nvl);
847 	return (ret);
848 }
849 
850 int
851 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
852     const char *anchor_call, uint32_t ticket)
853 {
854 	struct pfioc_nv nv;
855 	nvlist_t *nvl, *addr;
856 	void *packed;
857 	int error = 0;
858 	size_t labelcount, size;
859 
860 	nvl = nvlist_create(0);
861 
862 	nvlist_add_number(nvl, "ticket", ticket);
863 	nvlist_add_string(nvl, "anchor", anchor);
864 	nvlist_add_string(nvl, "anchor_call", anchor_call);
865 
866 	nvlist_add_number(nvl, "nr", r->nr);
867 	nvlist_add_bool(nvl, "quick", r->quick);
868 	nvlist_add_string(nvl, "ifname", r->ifname);
869 	nvlist_add_bool(nvl, "ifnot", r->ifnot);
870 	nvlist_add_number(nvl, "direction", r->direction);
871 	nvlist_add_number(nvl, "proto", r->proto);
872 	nvlist_add_string(nvl, "match_tagname", r->match_tagname);
873 	nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
874 
875 	addr = pfctl_eth_addr_to_nveth_addr(&r->src);
876 	if (addr == NULL) {
877 		nvlist_destroy(nvl);
878 		return (ENOMEM);
879 	}
880 	nvlist_add_nvlist(nvl, "src", addr);
881 	nvlist_destroy(addr);
882 
883 	addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
884 	if (addr == NULL) {
885 		nvlist_destroy(nvl);
886 		return (ENOMEM);
887 	}
888 	nvlist_add_nvlist(nvl, "dst", addr);
889 	nvlist_destroy(addr);
890 
891 	pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
892 	pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
893 
894 	labelcount = 0;
895 	while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
896 	    r->label[labelcount][0] != 0) {
897 		nvlist_append_string_array(nvl, "labels",
898 		    r->label[labelcount]);
899 		labelcount++;
900 	}
901 	nvlist_add_number(nvl, "ridentifier", r->ridentifier);
902 
903 	nvlist_add_string(nvl, "qname", r->qname);
904 	nvlist_add_string(nvl, "tagname", r->tagname);
905 	nvlist_add_number(nvl, "dnpipe", r->dnpipe);
906 	nvlist_add_number(nvl, "dnflags", r->dnflags);
907 
908 	nvlist_add_string(nvl, "bridge_to", r->bridge_to);
909 
910 	nvlist_add_number(nvl, "action", r->action);
911 
912 	packed = nvlist_pack(nvl, &size);
913 	if (packed == NULL) {
914 		nvlist_destroy(nvl);
915 		return (ENOMEM);
916 	}
917 
918 	nv.len = size;
919 	nv.size = size;
920 	nv.data = packed;
921 
922 	if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
923 		error = errno;
924 
925 	free(packed);
926 	nvlist_destroy(nvl);
927 
928 	return (error);
929 }
930 
931 static void
932 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
933 {
934 	int off;
935 
936 	off = snl_add_msg_attr_nested(nw, type);
937 
938 	snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
939 	snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
940 
941 	if (addr->type == PF_ADDR_DYNIFTL)
942 		snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
943 	if (addr->type == PF_ADDR_TABLE)
944 		snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
945 	snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
946 	snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
947 
948 	snl_end_attr_nested(nw, off);
949 }
950 
951 static void
952 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
953 {
954 	int off;
955 
956 	off = snl_add_msg_attr_nested(nw, type);
957 
958 	snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
959 	snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
960 	snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
961 	snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
962 	snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
963 
964 	snl_end_attr_nested(nw, off);
965 }
966 
967 static void
968 snl_add_msg_attr_rule_labels(struct snl_writer *nw, uint32_t type, const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE])
969 {
970 	int off, i = 0;
971 
972 	off = snl_add_msg_attr_nested(nw, type);
973 
974 	while (i < PF_RULE_MAX_LABEL_COUNT &&
975 	    labels[i][0] != 0) {
976 		snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
977 		i++;
978 	}
979 
980 	snl_end_attr_nested(nw, off);
981 }
982 
983 static void
984 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
985 {
986 	int off;
987 
988 	off = snl_add_msg_attr_nested(nw, type);
989 
990 	snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
991 	snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
992 	snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
993 
994 	snl_end_attr_nested(nw, off);
995 }
996 
997 static void
998 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
999 {
1000 	int off;
1001 
1002 	off = snl_add_msg_attr_nested(nw, type);
1003 
1004 	snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1005 	snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1006 	snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1007 	snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1008 	snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1009 	snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1010 	snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1011 
1012 	snl_end_attr_nested(nw, off);
1013 }
1014 
1015 static void
1016 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1017 {
1018 	int off;
1019 
1020 	off = snl_add_msg_attr_nested(nw, type);
1021 
1022 	for (int i = 0; i < PFTM_MAX; i++)
1023 		snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1024 
1025 	snl_end_attr_nested(nw, off);
1026 }
1027 
1028 static void
1029 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1030 {
1031 	int off;
1032 
1033 	off = snl_add_msg_attr_nested(nw, type);
1034 
1035 	snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1036 	snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1037 	snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1038 
1039 	snl_end_attr_nested(nw, off);
1040 }
1041 
1042 static void
1043 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1044 {
1045 	int off;
1046 
1047 	off = snl_add_msg_attr_nested(nw, type);
1048 
1049 	snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1050 	snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1051 	snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1052 	snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1053 	snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1054 	snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1055 	snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1056 	snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1057 	snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1058 	snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1059 	snl_add_msg_attr_rpool(nw, PF_RT_RPOOL, &r->rpool);
1060 	snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1061 	snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1062 	snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1063 	snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1064 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1065 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1066 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1067 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1068 
1069 	snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1070 	snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1071 	snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1072 
1073 	snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1074 	snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1075 	snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1076 	snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1077 
1078 	snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1079 	snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1080 	snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1081 	snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1082 
1083 	snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1084 	snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1085 
1086 	snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1087 	snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1088 	snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1089 	snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1090 	snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1091 	snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1092 	snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1093 	snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1094 	snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1095 	snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1096 	snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1097 	snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1098 	snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type);
1099 	snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code);
1100 	snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1101 	snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1102 	snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1103 	snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1104 	snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1105 	snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1106 	snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1107 	snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1108 
1109 	snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1110 	snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1111 	snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1112 	snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1113 	snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1114 	snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1115 
1116 	snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1117 	snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1118 
1119 	snl_end_attr_nested(nw, off);
1120 }
1121 
1122 int
1123 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1124     const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1125 {
1126 	struct pfctl_handle *h;
1127 	int ret;
1128 
1129 	h = pfctl_open(PF_DEVICE);
1130 	if (h == NULL)
1131 		return (ENODEV);
1132 
1133 	ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1134 
1135 	pfctl_close(h);
1136 
1137 	return (ret);
1138 }
1139 
1140 int
1141 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1142 	    const char *anchor, const char *anchor_call, uint32_t ticket,
1143 	    uint32_t pool_ticket)
1144 {
1145 	struct snl_writer nw;
1146 	struct snl_errmsg_data e = {};
1147 	struct nlmsghdr *hdr;
1148 	uint32_t seq_id;
1149 	int family_id;
1150 
1151 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1152 	if (family_id == 0)
1153 		return (ENOTSUP);
1154 
1155 	snl_init_writer(&h->ss, &nw);
1156 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1157 	hdr->nlmsg_flags |= NLM_F_DUMP;
1158 	snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1159 	snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1160 	snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1161 	snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1162 
1163 	snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1164 
1165 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
1166 		return (ENXIO);
1167 
1168 	seq_id = hdr->nlmsg_seq;
1169 
1170 	if (! snl_send_message(&h->ss, hdr))
1171 		return (ENXIO);
1172 
1173 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1174 	}
1175 
1176 	return (e.error);
1177 }
1178 
1179 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1180 #define	_OUT(_field)	offsetof(struct pfctl_rules_info, _field)
1181 static struct snl_attr_parser ap_getrules[] = {
1182 	{ .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1183 	{ .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1184 };
1185 static struct snl_field_parser fp_getrules[] = {
1186 };
1187 #undef _IN
1188 #undef _OUT
1189 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules);
1190 
1191 int
1192 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1193     const char *path)
1194 {
1195 	struct snl_state ss = {};
1196 	struct snl_errmsg_data e = {};
1197 	struct nlmsghdr *hdr;
1198 	struct snl_writer nw;
1199 	uint32_t seq_id;
1200 	int family_id;
1201 
1202 	snl_init(&ss, NETLINK_GENERIC);
1203 	family_id = snl_get_genl_family(&ss, PFNL_FAMILY_NAME);
1204 	if (family_id == 0)
1205 		return (ENOTSUP);
1206 
1207 	snl_init_writer(&ss, &nw);
1208 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1209 	hdr->nlmsg_flags |= NLM_F_DUMP;
1210 
1211 	snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1212 	snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1213 
1214 	hdr = snl_finalize_msg(&nw);
1215 	if (hdr == NULL)
1216 		return (ENOMEM);
1217 
1218 	seq_id = hdr->nlmsg_seq;
1219 	if (! snl_send_message(&ss, hdr))
1220 		return (ENXIO);
1221 
1222 	while ((hdr = snl_read_reply_multi(&ss, seq_id, &e)) != NULL) {
1223 		if (! snl_parse_nlmsg(&ss, hdr, &getrules_parser, rules))
1224 			continue;
1225 	}
1226 
1227 	return (e.error);
1228 }
1229 
1230 int
1231 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1232     uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1233 {
1234 	return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1235 	    anchor_call, false));
1236 }
1237 
1238 #define _OUT(_field)	offsetof(struct pf_addr_wrap, _field)
1239 static const struct snl_attr_parser ap_addr_wrap[] = {
1240 	{ .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1241 	{ .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1242 	{ .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1243 	{ .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1244 	{ .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1245 	{ .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1246 	{ .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1247 	{ .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1248 };
1249 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1250 #undef _OUT
1251 
1252 #define _OUT(_field)	offsetof(struct pf_rule_addr, _field)
1253 static struct snl_attr_parser ap_rule_addr[] = {
1254 	{ .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1255 	{ .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1256 	{ .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1257 	{ .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1258 	{ .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1259 };
1260 #undef _OUT
1261 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1262 
1263 struct snl_parsed_labels
1264 {
1265 	char		labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1266 	uint32_t	i;
1267 };
1268 
1269 static bool
1270 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1271     const void *arg __unused, void *target)
1272 {
1273 	struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1274 	bool ret;
1275 
1276 	if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1277 		return (E2BIG);
1278 
1279 	ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1280 	    l->labels[l->i]);
1281 	if (ret)
1282 		l->i++;
1283 
1284 	return (ret);
1285 }
1286 
1287 #define _OUT(_field)	offsetof(struct nl_parsed_labels, _field)
1288 static const struct snl_attr_parser ap_labels[] = {
1289 	{ .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1290 };
1291 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1292 #undef _OUT
1293 
1294 static bool
1295 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1296     const void *arg __unused, void *target)
1297 {
1298 	struct snl_parsed_labels parsed_labels = { };
1299 	bool error;
1300 
1301 	/* Assumes target points to the beginning of the structure */
1302 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1303 	if (! error)
1304 		return (error);
1305 
1306 	memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1307 
1308 	return (true);
1309 }
1310 
1311 #define _OUT(_field)	offsetof(struct pf_mape_portset, _field)
1312 static const struct snl_attr_parser ap_mape_portset[] = {
1313 	{ .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1314 	{ .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1315 	{. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1316 };
1317 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1318 #undef _OUT
1319 
1320 #define _OUT(_field)	offsetof(struct pfctl_pool, _field)
1321 static const struct snl_attr_parser ap_pool[] = {
1322 	{ .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1323 	{ .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1324 	{ .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1325 	{ .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1326 	{ .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1327 	{ .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1328 	{ .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1329 };
1330 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1331 #undef _OUT
1332 
1333 struct nl_parsed_timeouts
1334 {
1335 	uint32_t	timeouts[PFTM_MAX];
1336 	uint32_t	i;
1337 };
1338 
1339 static bool
1340 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1341     const void *arg __unused, void *target)
1342 {
1343 	struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1344 	bool ret;
1345 
1346 	if (t->i >= PFTM_MAX)
1347 		return (E2BIG);
1348 
1349 	ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1350 	if (ret)
1351 		t->i++;
1352 
1353 	return (ret);
1354 }
1355 
1356 #define _OUT(_field)	offsetof(struct nl_parsed_timeout, _field)
1357 static const struct snl_attr_parser ap_timeouts[] = {
1358 	{ .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1359 };
1360 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1361 #undef _OUT
1362 
1363 static bool
1364 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1365     const void *arg __unused, void *target)
1366 {
1367 	struct nl_parsed_timeouts parsed_timeouts = { };
1368 	bool error;
1369 
1370 	/* Assumes target points to the beginning of the structure */
1371 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1372 	if (! error)
1373 		return (error);
1374 
1375 	memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1376 
1377 	return (true);
1378 }
1379 
1380 #define _OUT(_field)	offsetof(struct pf_rule_uid, _field)
1381 static const struct snl_attr_parser ap_rule_uid[] = {
1382 	{ .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1383 	{ .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1384 	{ .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1385 };
1386 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1387 #undef _OUT
1388 
1389 struct pfctl_nl_get_rule {
1390 	struct pfctl_rule r;
1391 	char anchor_call[MAXPATHLEN];
1392 };
1393 #define	_OUT(_field)	offsetof(struct pfctl_nl_get_rule, _field)
1394 static struct snl_attr_parser ap_getrule[] = {
1395 	{ .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1396 	{ .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1397 	{ .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1398 	{ .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1399 	{ .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1400 	{ .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1401 	{ .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1402 	{ .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1403 	{ .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1404 	{ .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1405 	{ .type = PF_RT_RPOOL, .off = _OUT(r.rpool), .arg = &pool_parser, .cb = snl_attr_get_nested },
1406 	{ .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1407 	{ .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1408 	{ .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1409 	{ .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1410 	{ .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1411 	{ .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1412 	{ .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1413 	{ .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1414 	{ .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1415 	{ .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1416 	{ .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1417 	{ .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1418 	{ .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1419 	{ .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1420 	{. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1421 	{ .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1422 	{ .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1423 	{ .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1424 	{ .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1425 	{ .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1426 	{ .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1427 	{ .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1428 	{ .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1429 	{ .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1430 	{ .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1431 	{ .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1432 	{ .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1433 	{ .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1434 	{ .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1435 	{ .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1436 	{ .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1437 	{ .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1438 	{ .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1439 	{ .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1440 	{ .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1441 	{ .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1442 	{ .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1443 	{ .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1444 	{ .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1445 	{ .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1446 	{ .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1447 	{ .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1448 	{ .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1449 	{ .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1450 	{ .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1451 	{ .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1452 	{ .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1453 	{ .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1454 	{ .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1455 	{ .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1456 	{ .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1457 	{ .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1458 	{ .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1459 	{ .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1460 	{ .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1461 	{ .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1462 	{ .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1463 	{ .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1464 	{ .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1465 	{ .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1466 	{ .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1467 };
1468 static struct snl_field_parser fp_getrule[] = {};
1469 #undef _OUT
1470 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, ap_getrule);
1471 
1472 int
1473 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1474     const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1475     char *anchor_call, bool clear)
1476 {
1477 	struct pfctl_nl_get_rule attrs = {};
1478 	struct snl_errmsg_data e = {};
1479 	struct nlmsghdr *hdr;
1480 	struct snl_writer nw;
1481 	uint32_t seq_id;
1482 	int family_id;
1483 
1484 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1485 	if (family_id == 0)
1486 		return (ENOTSUP);
1487 
1488 	snl_init_writer(&h->ss, &nw);
1489 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1490 	hdr->nlmsg_flags |= NLM_F_DUMP;
1491 
1492 	snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1493 	snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1494 	snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1495 	snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1496 	snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1497 
1498 	hdr = snl_finalize_msg(&nw);
1499 	if (hdr == NULL)
1500 		return (ENOMEM);
1501 
1502 	seq_id = hdr->nlmsg_seq;
1503 	if (! snl_send_message(&h->ss, hdr))
1504 		return (ENXIO);
1505 
1506 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1507 		if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1508 			continue;
1509 	}
1510 
1511 	memcpy(rule, &attrs.r, sizeof(attrs.r));
1512 	strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1513 
1514 	return (e.error);
1515 }
1516 
1517 int
1518 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1519 	    const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1520 	    char *anchor_call, bool clear)
1521 {
1522 	nvlist_t *nvl;
1523 	int ret;
1524 
1525 	nvl = nvlist_create(0);
1526 	if (nvl == 0)
1527 		return (ENOMEM);
1528 
1529 	nvlist_add_number(nvl, "nr", nr);
1530 	nvlist_add_number(nvl, "ticket", ticket);
1531 	nvlist_add_string(nvl, "anchor", anchor);
1532 	nvlist_add_number(nvl, "ruleset", ruleset);
1533 
1534 	if (clear)
1535 		nvlist_add_bool(nvl, "clear_counter", true);
1536 
1537 	if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1538 		goto out;
1539 
1540 	pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1541 
1542 	if (anchor_call)
1543 		strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1544 		    MAXPATHLEN);
1545 
1546 out:
1547 	nvlist_destroy(nvl);
1548 	return (ret);
1549 }
1550 
1551 int
1552 pfctl_set_keepcounters(int dev, bool keep)
1553 {
1554 	struct pfioc_nv	 nv;
1555 	nvlist_t	*nvl;
1556 	int		 ret;
1557 
1558 	nvl = nvlist_create(0);
1559 
1560 	nvlist_add_bool(nvl, "keep_counters", keep);
1561 
1562 	nv.data = nvlist_pack(nvl, &nv.len);
1563 	nv.size = nv.len;
1564 
1565 	nvlist_destroy(nvl);
1566 
1567 	ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1568 
1569 	free(nv.data);
1570 	return (ret);
1571 }
1572 
1573 struct pfctl_creator {
1574 	uint32_t id;
1575 };
1576 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1577 #define	_OUT(_field)	offsetof(struct pfctl_creator, _field)
1578 static struct snl_attr_parser ap_creators[] = {
1579 	{ .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1580 };
1581 static struct snl_field_parser fp_creators[] = {
1582 };
1583 #undef _IN
1584 #undef _OUT
1585 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators);
1586 
1587 static int
1588 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1589 {
1590 
1591 	int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1592 	size_t i = 0;
1593 
1594 	struct nlmsghdr *hdr;
1595 	struct snl_writer nw;
1596 
1597 	if (family_id == 0)
1598 		return (ENOTSUP);
1599 
1600 	snl_init_writer(ss, &nw);
1601 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1602 	hdr->nlmsg_flags |= NLM_F_DUMP;
1603 	hdr = snl_finalize_msg(&nw);
1604 	if (hdr == NULL)
1605 		return (ENOMEM);
1606 	uint32_t seq_id = hdr->nlmsg_seq;
1607 
1608 	snl_send_message(ss, hdr);
1609 
1610 	struct snl_errmsg_data e = {};
1611 	while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1612 		struct pfctl_creator c;
1613 		bzero(&c, sizeof(c));
1614 
1615 		if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1616 			continue;
1617 
1618 		creators[i] = c.id;
1619 		i++;
1620 		if (i > *len)
1621 			return (E2BIG);
1622 	}
1623 
1624 	*len = i;
1625 
1626 	return (0);
1627 }
1628 
1629 int
1630 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1631 {
1632 	int error;
1633 
1634 	error = pfctl_get_creators_nl(&h->ss, creators, len);
1635 
1636 	return (error);
1637 }
1638 
1639 static inline bool
1640 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1641     const void *arg __unused, void *target)
1642 {
1643 	memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1644 	return (true);
1645 }
1646 
1647 static inline bool
1648 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1649     const void *arg __unused, void *target)
1650 {
1651 	size_t maxlen = NLA_DATA_LEN(nla);
1652 
1653 	if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1654 		strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1655 		return (true);
1656 	}
1657 	return (false);
1658 }
1659 
1660 #define	_OUT(_field)	offsetof(struct pfctl_state_peer, _field)
1661 static const struct snl_attr_parser nla_p_speer[] = {
1662 	{ .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1663 	{ .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1664 	{ .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1665 	{ .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1666 	{ .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1667 };
1668 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1669 #undef _OUT
1670 
1671 #define	_OUT(_field)	offsetof(struct pf_state_key_export, _field)
1672 static const struct snl_attr_parser nla_p_skey[] = {
1673 	{ .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1674 	{ .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1675 	{ .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1676 	{ .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1677 };
1678 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1679 #undef _OUT
1680 
1681 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1682 #define	_OUT(_field)	offsetof(struct pfctl_state, _field)
1683 static struct snl_attr_parser ap_state[] = {
1684 	{ .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1685 	{ .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1686 	{ .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1687 	{ .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1688 	{ .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1689 	{ .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1690 	{ .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1691 	{ .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1692 	{ .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1693 	{ .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1694 	{ .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1695 	{ .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1696 	{ .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1697 	{ .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1698 	{ .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1699 	{ .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1700 	{ .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1701 	{ .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1702 	{ .type = PF_ST_AF, .off = _OUT(key[0].af), .cb = snl_attr_get_uint8 },
1703 	{ .type = PF_ST_PROTO, .off = _OUT(key[0].proto), .cb = snl_attr_get_uint8 },
1704 	{ .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1705 	{ .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1706 	{ .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1707 	{ .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1708 	{ .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1709 	{ .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1710 	{ .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1711 	{ .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1712 	{ .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1713 	{ .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1714 	{ .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1715 };
1716 static struct snl_field_parser fp_state[] = {
1717 };
1718 #undef _IN
1719 #undef _OUT
1720 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, ap_state);
1721 
1722 static const struct snl_hdr_parser *all_parsers[] = {
1723 	&state_parser, &skey_parser, &speer_parser,
1724 	&creator_parser, &getrules_parser
1725 };
1726 
1727 static int
1728 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1729 {
1730 	SNL_VERIFY_PARSERS(all_parsers);
1731 	int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1732 	int ret;
1733 
1734 	struct nlmsghdr *hdr;
1735 	struct snl_writer nw;
1736 
1737 	if (family_id == 0)
1738 		return (ENOTSUP);
1739 
1740 	snl_init_writer(ss, &nw);
1741 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1742 	hdr->nlmsg_flags |= NLM_F_DUMP;
1743 	snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1744 	snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1745 	snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1746 	snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1747 	snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1748 
1749 	hdr = snl_finalize_msg(&nw);
1750 	if (hdr == NULL)
1751 		return (ENOMEM);
1752 
1753 	uint32_t seq_id = hdr->nlmsg_seq;
1754 
1755 	snl_send_message(ss, hdr);
1756 
1757 	struct snl_errmsg_data e = {};
1758 	while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1759 		struct pfctl_state s;
1760 		bzero(&s, sizeof(s));
1761 		if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1762 			continue;
1763 
1764 		s.key[1].af = s.key[0].af;
1765 		s.key[1].proto = s.key[0].proto;
1766 
1767 		ret = f(&s, arg);
1768 		if (ret != 0)
1769 			return (ret);
1770 	}
1771 
1772 	return (0);
1773 }
1774 
1775 int
1776 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1777 {
1778 	struct pfctl_state_filter filter = {};
1779 	return (pfctl_get_filtered_states_iter(&filter, f, arg));
1780 }
1781 
1782 int
1783 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1784 {
1785 	struct snl_state ss = {};
1786 	int error;
1787 
1788 	snl_init(&ss, NETLINK_GENERIC);
1789 	error = pfctl_get_states_nl(filter, &ss, f, arg);
1790 	snl_free(&ss);
1791 
1792 	return (error);
1793 }
1794 
1795 static int
1796 pfctl_append_states(struct pfctl_state *s, void *arg)
1797 {
1798 	struct pfctl_state *new;
1799 	struct pfctl_states *states = (struct pfctl_states *)arg;
1800 
1801 	new = malloc(sizeof(*s));
1802 	if (new == NULL)
1803 		return (ENOMEM);
1804 
1805 	memcpy(new, s, sizeof(*s));
1806 
1807 	TAILQ_INSERT_TAIL(&states->states, new, entry);
1808 
1809 	return (0);
1810 }
1811 
1812 int
1813 pfctl_get_states(int dev __unused, struct pfctl_states *states)
1814 {
1815 	int ret;
1816 
1817 	bzero(states, sizeof(*states));
1818 	TAILQ_INIT(&states->states);
1819 
1820 	ret = pfctl_get_states_iter(pfctl_append_states, states);
1821 	if (ret != 0) {
1822 		pfctl_free_states(states);
1823 		return (ret);
1824 	}
1825 
1826 	return (0);
1827 }
1828 
1829 void
1830 pfctl_free_states(struct pfctl_states *states)
1831 {
1832 	struct pfctl_state *s, *tmp;
1833 
1834 	TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
1835 		free(s);
1836 	}
1837 
1838 	bzero(states, sizeof(*states));
1839 }
1840 
1841 struct pfctl_nl_clear_states {
1842 	uint32_t killed;
1843 };
1844 #define	_OUT(_field)	offsetof(struct pfctl_nl_clear_states, _field)
1845 static struct snl_attr_parser ap_clear_states[] = {
1846 	{ .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
1847 };
1848 static struct snl_field_parser fp_clear_states[] = {};
1849 #undef _OUT
1850 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states);
1851 
1852 static int
1853 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
1854     unsigned int *killed, int cmd)
1855 {
1856 	struct snl_writer nw;
1857 	struct snl_errmsg_data e = {};
1858 	struct pfctl_nl_clear_states attrs = {};
1859 	struct nlmsghdr *hdr;
1860 	uint32_t seq_id;
1861 	int family_id;
1862 
1863 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1864 	if (family_id == 0)
1865 		return (ENOTSUP);
1866 
1867 	snl_init_writer(&h->ss, &nw);
1868 	hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
1869 	hdr->nlmsg_flags |= NLM_F_DUMP;
1870 
1871 	snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
1872 	snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
1873 	snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
1874 	snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
1875 	snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
1876 	snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
1877 	snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
1878 	snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
1879 	snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
1880 	snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
1881 	snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
1882 	snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
1883 
1884 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
1885 		return (ENXIO);
1886 
1887 	seq_id = hdr->nlmsg_seq;
1888 
1889 	if (! snl_send_message(&h->ss, hdr))
1890 		return (ENXIO);
1891 
1892 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1893 		if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
1894 			continue;
1895 	}
1896 
1897 	if (killed)
1898 		*killed = attrs.killed;
1899 
1900 	return (e.error);
1901 }
1902 
1903 int
1904 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
1905     unsigned int *killed)
1906 {
1907 	return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
1908 }
1909 
1910 int
1911 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
1912     unsigned int *killed)
1913 {
1914 	return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
1915 }
1916 
1917 static int
1918 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
1919     unsigned int *killed, uint64_t cmd)
1920 {
1921 	struct pfctl_handle *h;
1922 	int ret;
1923 
1924 	h = pfctl_open(PF_DEVICE);
1925 	if (h == NULL)
1926 		return (ENODEV);
1927 
1928 	ret = _pfctl_clear_states_h(h, kill, killed, cmd);
1929 	pfctl_close(h);
1930 
1931 	return (ret);
1932 }
1933 
1934 int
1935 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
1936     unsigned int *killed)
1937 {
1938 	return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
1939 }
1940 
1941 int
1942 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
1943 {
1944 	return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
1945 }
1946 
1947 int
1948 pfctl_clear_rules(int dev, const char *anchorname)
1949 {
1950 	struct pfioc_trans trans;
1951 	struct pfioc_trans_e transe[2];
1952 	int ret;
1953 
1954 	bzero(&trans, sizeof(trans));
1955 	bzero(&transe, sizeof(transe));
1956 
1957 	transe[0].rs_num = PF_RULESET_SCRUB;
1958 	if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
1959 	    >= sizeof(transe[0].anchor))
1960 		return (E2BIG);
1961 
1962 	transe[1].rs_num = PF_RULESET_FILTER;
1963 	if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
1964 	    >= sizeof(transe[1].anchor))
1965 		return (E2BIG);
1966 
1967 	trans.size = 2;
1968 	trans.esize = sizeof(transe[0]);
1969 	trans.array = transe;
1970 
1971 	ret = ioctl(dev, DIOCXBEGIN, &trans);
1972 	if (ret != 0)
1973 		return (ret);
1974 	return ioctl(dev, DIOCXCOMMIT, &trans);
1975 }
1976 
1977 int
1978 pfctl_clear_nat(int dev, const char *anchorname)
1979 {
1980 	struct pfioc_trans trans;
1981 	struct pfioc_trans_e transe[3];
1982 	int ret;
1983 
1984 	bzero(&trans, sizeof(trans));
1985 	bzero(&transe, sizeof(transe));
1986 
1987 	transe[0].rs_num = PF_RULESET_NAT;
1988 	if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
1989 	    >= sizeof(transe[0].anchor))
1990 		return (E2BIG);
1991 
1992 	transe[1].rs_num = PF_RULESET_BINAT;
1993 	if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
1994 	    >= sizeof(transe[0].anchor))
1995 		return (E2BIG);
1996 
1997 	transe[2].rs_num = PF_RULESET_RDR;
1998 	if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
1999 	    >= sizeof(transe[2].anchor))
2000 		return (E2BIG);
2001 
2002 	trans.size = 3;
2003 	trans.esize = sizeof(transe[0]);
2004 	trans.array = transe;
2005 
2006 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2007 	if (ret != 0)
2008 		return (ret);
2009 	return ioctl(dev, DIOCXCOMMIT, &trans);
2010 }
2011 int
2012 pfctl_clear_eth_rules(int dev, const char *anchorname)
2013 {
2014 	struct pfioc_trans trans;
2015 	struct pfioc_trans_e transe;
2016 	int ret;
2017 
2018 	bzero(&trans, sizeof(trans));
2019 	bzero(&transe, sizeof(transe));
2020 
2021 	transe.rs_num = PF_RULESET_ETH;
2022 	if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2023 	    >= sizeof(transe.anchor))
2024 		return (E2BIG);
2025 
2026 	trans.size = 1;
2027 	trans.esize = sizeof(transe);
2028 	trans.array = &transe;
2029 
2030 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2031 	if (ret != 0)
2032 		return (ret);
2033 	return ioctl(dev, DIOCXCOMMIT, &trans);
2034 }
2035 
2036 static int
2037 pfctl_get_limit(int dev, const int index, uint *limit)
2038 {
2039 	struct pfioc_limit pl;
2040 
2041 	bzero(&pl, sizeof(pl));
2042 	pl.index = index;
2043 
2044 	if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2045 		return (errno);
2046 
2047 	*limit = pl.limit;
2048 
2049 	return (0);
2050 }
2051 
2052 int
2053 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2054 {
2055 	struct pfioc_nv	 nv;
2056 	nvlist_t	*nvl;
2057 	int		 ret;
2058 	uint		 state_limit;
2059 	uint64_t	 lim, hi, lo;
2060 
2061 	ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2062 	if (ret != 0)
2063 		return (ret);
2064 
2065 	lim = state_limit;
2066 	hi = lim * s->highwater / 100;
2067 	lo = lim * s->lowwater / 100;
2068 
2069 	if (lo == hi)
2070 		hi++;
2071 
2072 	nvl = nvlist_create(0);
2073 
2074 	nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2075 	nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2076 	nvlist_add_number(nvl, "highwater", hi);
2077 	nvlist_add_number(nvl, "lowwater", lo);
2078 
2079 	nv.data = nvlist_pack(nvl, &nv.len);
2080 	nv.size = nv.len;
2081 	nvlist_destroy(nvl);
2082 	nvl = NULL;
2083 
2084 	ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2085 
2086 	free(nv.data);
2087 	return (ret);
2088 }
2089 
2090 int
2091 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2092 {
2093 	nvlist_t	*nvl;
2094 	int		 ret;
2095 	uint		 state_limit;
2096 	bool		 enabled, adaptive;
2097 
2098 	ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2099 	if (ret != 0)
2100 		return (ret);
2101 
2102 	bzero(s, sizeof(*s));
2103 
2104 	nvl = nvlist_create(0);
2105 
2106 	if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2107 		ret = errno;
2108 		goto out;
2109 	}
2110 
2111 	enabled = nvlist_get_bool(nvl, "enabled");
2112 	adaptive = nvlist_get_bool(nvl, "adaptive");
2113 
2114 	if (enabled) {
2115 		if (adaptive)
2116 			s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2117 		else
2118 			s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2119 	} else {
2120 		s->mode = PFCTL_SYNCOOKIES_NEVER;
2121 	}
2122 
2123 	s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2124 	s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2125 	s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2126 
2127 out:
2128 	nvlist_destroy(nvl);
2129 	return (ret);
2130 }
2131 
2132 int
2133 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2134     *addr, int size, int *nadd, int flags)
2135 {
2136 	struct pfioc_table io;
2137 
2138 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2139 		return (EINVAL);
2140 	}
2141 	bzero(&io, sizeof io);
2142 	io.pfrio_flags = flags;
2143 	io.pfrio_table = *tbl;
2144 	io.pfrio_buffer = addr;
2145 	io.pfrio_esize = sizeof(*addr);
2146 	io.pfrio_size = size;
2147 
2148 	if (ioctl(dev, DIOCRADDADDRS, &io))
2149 		return (errno);
2150 	if (nadd != NULL)
2151 		*nadd = io.pfrio_nadd;
2152 	return (0);
2153 }
2154 
2155 int
2156 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2157     *addr, int size, int *ndel, int flags)
2158 {
2159 	struct pfioc_table io;
2160 
2161 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2162 		return (EINVAL);
2163 	}
2164 	bzero(&io, sizeof io);
2165 	io.pfrio_flags = flags;
2166 	io.pfrio_table = *tbl;
2167 	io.pfrio_buffer = addr;
2168 	io.pfrio_esize = sizeof(*addr);
2169 	io.pfrio_size = size;
2170 
2171 	if (ioctl(dev, DIOCRDELADDRS, &io))
2172 		return (errno);
2173 	if (ndel != NULL)
2174 		*ndel = io.pfrio_ndel;
2175 	return (0);
2176 }
2177 
2178 int
2179 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2180     *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2181 {
2182 	struct pfioc_table io;
2183 
2184 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2185 		return (EINVAL);
2186 	}
2187 	bzero(&io, sizeof io);
2188 	io.pfrio_flags = flags;
2189 	io.pfrio_table = *tbl;
2190 	io.pfrio_buffer = addr;
2191 	io.pfrio_esize = sizeof(*addr);
2192 	io.pfrio_size = size;
2193 	io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2194 	if (ioctl(dev, DIOCRSETADDRS, &io))
2195 		return (-1);
2196 	if (nadd != NULL)
2197 		*nadd = io.pfrio_nadd;
2198 	if (ndel != NULL)
2199 		*ndel = io.pfrio_ndel;
2200 	if (nchange != NULL)
2201 		*nchange = io.pfrio_nchange;
2202 	if (size2 != NULL)
2203 		*size2 = io.pfrio_size2;
2204 	return (0);
2205 }
2206 
2207 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2208     int *size, int flags)
2209 {
2210 	struct pfioc_table io;
2211 
2212 	if (tbl == NULL || size == NULL || *size < 0 ||
2213 	    (*size && addr == NULL)) {
2214 		return (EINVAL);
2215 	}
2216 	bzero(&io, sizeof io);
2217 	io.pfrio_flags = flags;
2218 	io.pfrio_table = *tbl;
2219 	io.pfrio_buffer = addr;
2220 	io.pfrio_esize = sizeof(*addr);
2221 	io.pfrio_size = *size;
2222 	if (ioctl(dev, DIOCRGETADDRS, &io))
2223 		return (-1);
2224 	*size = io.pfrio_size;
2225 	return (0);
2226 }
2227 
2228 int
2229 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2230 {
2231 	struct snl_writer nw;
2232 	struct snl_errmsg_data e = {};
2233 	struct nlmsghdr *hdr;
2234 	uint32_t seq_id;
2235 	int family_id;
2236 
2237 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2238 	if (family_id == 0)
2239 		return (ENOTSUP);
2240 
2241 	snl_init_writer(&h->ss, &nw);
2242 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2243 
2244 	snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2245 
2246 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2247 		return (ENXIO);
2248 
2249 	seq_id = hdr->nlmsg_seq;
2250 
2251 	if (! snl_send_message(&h->ss, hdr))
2252 		return (ENXIO);
2253 
2254 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2255 	}
2256 
2257 	return (e.error);
2258 }
2259