xref: /freebsd/lib/libpfctl/libpfctl.c (revision ebe11b46988eb27d287272b8c827eb80ebd900ba)
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_netlink_cmd(struct pfctl_handle *h, uint cmd)
113 {
114 	struct snl_errmsg_data e = {};
115 	struct snl_writer nw;
116 	struct nlmsghdr *hdr;
117 	uint32_t seq_id;
118 	int family_id;
119 
120 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
121 	if (family_id == 0)
122 		return (ENOTSUP);
123 
124 	snl_init_writer(&h->ss, &nw);
125 	hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
126 
127 	hdr = snl_finalize_msg(&nw);
128 	if (hdr == NULL)
129 		return (ENOMEM);
130 	seq_id = hdr->nlmsg_seq;
131 
132 	snl_send_message(&h->ss, hdr);
133 
134 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
135 	}
136 
137 	return (e.error);
138 }
139 
140 static int
141 pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl)
142 {
143 	struct pfioc_nv nv;
144 	void *data;
145 	size_t nvlen;
146 	int ret;
147 
148 	data = nvlist_pack(*nvl, &nvlen);
149 	if (nvlen > size)
150 		size = nvlen;
151 
152 retry:
153 	nv.data = malloc(size);
154 	if (nv.data == NULL) {
155 		ret = ENOMEM;
156 		goto out;
157 	}
158 
159 	memcpy(nv.data, data, nvlen);
160 
161 	nv.len = nvlen;
162 	nv.size = size;
163 
164 	ret = ioctl(dev, cmd, &nv);
165 	if (ret == -1 && errno == ENOSPC) {
166 		size *= 2;
167 		free(nv.data);
168 		goto retry;
169 	}
170 
171 	nvlist_destroy(*nvl);
172 	*nvl = NULL;
173 
174 	if (ret == 0) {
175 		*nvl = nvlist_unpack(nv.data, nv.len, 0);
176 		if (*nvl == NULL) {
177 			ret = EIO;
178 			goto out;
179 		}
180 	} else {
181 		ret = errno;
182 	}
183 
184 out:
185 	free(data);
186 	free(nv.data);
187 
188 	return (ret);
189 }
190 
191 static void
192 pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems,
193     uint8_t *numbers, size_t *nelems)
194 {
195 	const uint64_t *tmp;
196 	size_t elems;
197 
198 	tmp = nvlist_get_number_array(nvl, name, &elems);
199 	assert(elems <= maxelems);
200 
201 	for (size_t i = 0; i < elems; i++)
202 		numbers[i] = tmp[i];
203 
204 	if (nelems)
205 		*nelems = elems;
206 }
207 
208 static void
209 pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems,
210     uint16_t *numbers, size_t *nelems)
211 {
212 	const uint64_t *tmp;
213 	size_t elems;
214 
215 	tmp = nvlist_get_number_array(nvl, name, &elems);
216 	assert(elems <= maxelems);
217 
218 	for (size_t i = 0; i < elems; i++)
219 		numbers[i] = tmp[i];
220 
221 	if (nelems)
222 		*nelems = elems;
223 }
224 
225 static void
226 pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems,
227     uint32_t *numbers, size_t *nelems)
228 {
229 	const uint64_t *tmp;
230 	size_t elems;
231 
232 	tmp = nvlist_get_number_array(nvl, name, &elems);
233 
234 	for (size_t i = 0; i < elems && i < maxelems; i++)
235 		numbers[i] = tmp[i];
236 
237 	if (nelems)
238 		*nelems = elems;
239 }
240 
241 static void
242 pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems,
243     uint64_t *numbers, size_t *nelems)
244 {
245 	const uint64_t *tmp;
246 	size_t elems;
247 
248 	tmp = nvlist_get_number_array(nvl, name, &elems);
249 	assert(elems <= maxelems);
250 
251 	for (size_t i = 0; i < elems; i++)
252 		numbers[i] = tmp[i];
253 
254 	if (nelems)
255 		*nelems = elems;
256 }
257 
258 int
259 pfctl_startstop(struct pfctl_handle *h, int start)
260 {
261 	return (pfctl_do_netlink_cmd(h, start ? PFNL_CMD_START : PFNL_CMD_STOP));
262 }
263 
264 static void
265 _pfctl_get_status_counters(const nvlist_t *nvl,
266     struct pfctl_status_counters *counters)
267 {
268 	const uint64_t		*ids, *counts;
269 	const char *const	*names;
270 	size_t id_len, counter_len, names_len;
271 
272 	ids = nvlist_get_number_array(nvl, "ids", &id_len);
273 	counts = nvlist_get_number_array(nvl, "counters", &counter_len);
274 	names = nvlist_get_string_array(nvl, "names", &names_len);
275 	assert(id_len == counter_len);
276 	assert(counter_len == names_len);
277 
278 	TAILQ_INIT(counters);
279 
280 	for (size_t i = 0; i < id_len; i++) {
281 		struct pfctl_status_counter *c;
282 
283 		c = malloc(sizeof(*c));
284 		if (c == NULL)
285 			continue;
286 
287 		c->id = ids[i];
288 		c->counter = counts[i];
289 		c->name = strdup(names[i]);
290 
291 		TAILQ_INSERT_TAIL(counters, c, entry);
292 	}
293 }
294 
295 #define	_OUT(_field)	offsetof(struct pfctl_status_counter, _field)
296 static const struct snl_attr_parser ap_counter[] = {
297 	{ .type = PF_C_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_uint64 },
298 	{ .type = PF_C_NAME, .off = _OUT(name), .cb = snl_attr_get_string },
299 	{ .type = PF_C_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
300 };
301 SNL_DECLARE_ATTR_PARSER(counter_parser, ap_counter);
302 #undef _OUT
303 
304 static bool
305 snl_attr_get_counters(struct snl_state *ss, struct nlattr *nla,
306     const void *arg __unused, void *target)
307 {
308 	struct pfctl_status_counter counter = {};
309 	struct pfctl_status_counter *c;
310 	bool error;
311 
312 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &counter_parser, &counter);
313 	if (! error)
314 		return (error);
315 
316 	c = malloc(sizeof(*c));
317 	if (c == NULL)
318 		return (false);
319 
320 	c->id = counter.id;
321 	c->counter = counter.counter;
322 	c->name = strdup(counter.name);
323 
324 	TAILQ_INSERT_TAIL((struct pfctl_status_counters *)target, c, entry);
325 
326 	return (error);
327 }
328 
329 struct snl_uint64_array {
330 	uint64_t *array;
331 	size_t count;
332 	size_t max;
333 };
334 static bool
335 snl_attr_get_uint64_element(struct snl_state *ss, struct nlattr *nla,
336     const void *arg, void *target)
337 {
338 	bool error;
339 	uint64_t value;
340 	struct snl_uint64_array *t = (struct snl_uint64_array *)target;
341 
342 	if (t->count >= t->max)
343 		return (false);
344 
345 	error = snl_attr_get_uint64(ss, nla, arg, &value);
346 	if (! error)
347 		return (error);
348 
349 	t->array[t->count++] = value;
350 
351 	return (true);
352 }
353 
354 static const struct snl_attr_parser ap_array[] = {
355 	{ .cb = snl_attr_get_uint64_element },
356 };
357 SNL_DECLARE_ATTR_PARSER(array_parser, ap_array);
358 static bool
359 snl_attr_get_uint64_array(struct snl_state *ss, struct nlattr *nla,
360     const void *arg, void *target)
361 {
362 	struct snl_uint64_array a = {
363 		.array = target,
364 		.count = 0,
365 		.max = (size_t)arg,
366 	};
367 	bool error;
368 
369 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a);
370 	if (! error)
371 		return (error);
372 
373 	return (true);
374 }
375 
376 #define	_OUT(_field)	offsetof(struct pfctl_status, _field)
377 static const struct snl_attr_parser ap_getstatus[] = {
378 	{ .type = PF_GS_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
379 	{ .type = PF_GS_RUNNING, .off = _OUT(running), .cb = snl_attr_get_bool },
380 	{ .type = PF_GS_SINCE, .off = _OUT(since), .cb = snl_attr_get_uint32 },
381 	{ .type = PF_GS_DEBUG, .off = _OUT(debug), .cb = snl_attr_get_uint32 },
382 	{ .type = PF_GS_HOSTID, .off = _OUT(hostid), .cb = snl_attr_get_uint32 },
383 	{ .type = PF_GS_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
384 	{ .type = PF_GS_SRC_NODES, .off = _OUT(src_nodes), .cb = snl_attr_get_uint32 },
385 	{ .type = PF_GS_REASSEMBLE, .off = _OUT(reass), .cb = snl_attr_get_uint32 },
386 	{ .type = PF_GS_SYNCOOKIES_ACTIVE, .off = _OUT(syncookies_active), .cb = snl_attr_get_uint32 },
387 	{ .type = PF_GS_COUNTERS, .off = _OUT(counters), .cb = snl_attr_get_counters },
388 	{ .type = PF_GS_LCOUNTERS, .off = _OUT(lcounters), .cb = snl_attr_get_counters },
389 	{ .type = PF_GS_FCOUNTERS, .off = _OUT(fcounters), .cb = snl_attr_get_counters },
390 	{ .type = PF_GS_SCOUNTERS, .off = _OUT(scounters), .cb = snl_attr_get_counters },
391 	{ .type = PF_GS_CHKSUM, .off = _OUT(pf_chksum), .arg_u32 = PF_MD5_DIGEST_LENGTH, .cb = snl_attr_get_bytes },
392 	{ .type = PF_GS_BCOUNTERS, .off = _OUT(bcounters), .arg_u32 = 2 * 2, .cb = snl_attr_get_uint64_array },
393 	{ .type = PF_GS_PCOUNTERS, .off = _OUT(pcounters), .arg_u32 = 2 * 2 * 2, .cb = snl_attr_get_uint64_array },
394 };
395 static struct snl_field_parser fp_getstatus[] = {};
396 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, fp_getstatus, ap_getstatus);
397 #undef _OUT
398 
399 struct pfctl_status *
400 pfctl_get_status_h(struct pfctl_handle *h __unused)
401 {
402 	struct pfctl_status	*status;
403 	struct snl_errmsg_data e = {};
404 	struct nlmsghdr *hdr;
405 	struct snl_writer nw;
406 	uint32_t seq_id;
407 	int family_id;
408 
409 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
410 	if (family_id == 0)
411 		return (NULL);
412 
413 	snl_init_writer(&h->ss, &nw);
414 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS);
415 	hdr->nlmsg_flags |= NLM_F_DUMP;
416 
417 	hdr = snl_finalize_msg(&nw);
418 	if (hdr == NULL) {
419 		return (NULL);
420 	}
421 
422 	seq_id = hdr->nlmsg_seq;
423 	if (! snl_send_message(&h->ss, hdr))
424 		return (NULL);
425 
426 	status = calloc(1, sizeof(*status));
427 	if (status == NULL)
428 		return (NULL);
429 	TAILQ_INIT(&status->counters);
430 	TAILQ_INIT(&status->lcounters);
431 	TAILQ_INIT(&status->fcounters);
432 	TAILQ_INIT(&status->scounters);
433 
434 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
435 		if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status))
436 			continue;
437 	}
438 
439 	return (status);
440 }
441 
442 struct pfctl_status *
443 pfctl_get_status(int dev)
444 {
445 	struct pfctl_status	*status;
446 	nvlist_t	*nvl;
447 	size_t		 len;
448 	const void	*chksum;
449 
450 	status = calloc(1, sizeof(*status));
451 	if (status == NULL)
452 		return (NULL);
453 
454 	nvl = nvlist_create(0);
455 
456 	if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
457 		nvlist_destroy(nvl);
458 		free(status);
459 		return (NULL);
460 	}
461 
462 	status->running = nvlist_get_bool(nvl, "running");
463 	status->since = nvlist_get_number(nvl, "since");
464 	status->debug = nvlist_get_number(nvl, "debug");
465 	status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
466 	status->states = nvlist_get_number(nvl, "states");
467 	status->src_nodes = nvlist_get_number(nvl, "src_nodes");
468 	status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
469 	status->reass = nvlist_get_number(nvl, "reass");
470 
471 	strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
472 	    IFNAMSIZ);
473 	chksum = nvlist_get_binary(nvl, "chksum", &len);
474 	assert(len == PF_MD5_DIGEST_LENGTH);
475 	memcpy(status->pf_chksum, chksum, len);
476 
477 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
478 	    &status->counters);
479 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
480 	    &status->lcounters);
481 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
482 	    &status->fcounters);
483 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
484 	    &status->scounters);
485 
486 	pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
487 	    (uint64_t *)status->pcounters, NULL);
488 	pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
489 	    (uint64_t *)status->bcounters, NULL);
490 
491 	nvlist_destroy(nvl);
492 
493 	return (status);
494 }
495 int
496 pfctl_clear_status(struct pfctl_handle *h)
497 {
498 	return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS));
499 }
500 
501 static uint64_t
502 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
503 {
504 	struct pfctl_status_counter *c;
505 
506 	TAILQ_FOREACH(c, counters, entry) {
507 		if (c->id == id)
508 			return (c->counter);
509 	}
510 
511 	return (0);
512 }
513 
514 uint64_t
515 pfctl_status_counter(struct pfctl_status *status, int id)
516 {
517 	return (_pfctl_status_counter(&status->counters, id));
518 }
519 
520 uint64_t
521 pfctl_status_lcounter(struct pfctl_status *status, int id)
522 {
523 	return (_pfctl_status_counter(&status->lcounters, id));
524 }
525 
526 uint64_t
527 pfctl_status_fcounter(struct pfctl_status *status, int id)
528 {
529 	return (_pfctl_status_counter(&status->fcounters, id));
530 }
531 
532 uint64_t
533 pfctl_status_scounter(struct pfctl_status *status, int id)
534 {
535 	return (_pfctl_status_counter(&status->scounters, id));
536 }
537 
538 void
539 pfctl_free_status(struct pfctl_status *status)
540 {
541 	struct pfctl_status_counter *c, *tmp;
542 
543 	if (status == NULL)
544 		return;
545 
546 	TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
547 		free(c->name);
548 		free(c);
549 	}
550 	TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
551 		free(c->name);
552 		free(c);
553 	}
554 	TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
555 		free(c->name);
556 		free(c);
557 	}
558 	TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
559 		free(c->name);
560 		free(c);
561 	}
562 
563 	free(status);
564 }
565 
566 static void
567 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
568     const struct pf_addr *addr)
569 {
570 	nvlist_t *nvl = nvlist_create(0);
571 
572 	nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
573 
574 	nvlist_add_nvlist(nvparent, name, nvl);
575 	nvlist_destroy(nvl);
576 }
577 
578 static void
579 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
580 {
581 	size_t len;
582 	const void *data;
583 
584 	data = nvlist_get_binary(nvl, "addr", &len);
585 	assert(len == sizeof(struct pf_addr));
586 	memcpy(addr, data, len);
587 }
588 
589 static void
590 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
591     const struct pf_addr_wrap *addr)
592 {
593 	nvlist_t *nvl = nvlist_create(0);
594 
595 	nvlist_add_number(nvl, "type", addr->type);
596 	nvlist_add_number(nvl, "iflags", addr->iflags);
597 	if (addr->type == PF_ADDR_DYNIFTL)
598 		nvlist_add_string(nvl, "ifname", addr->v.ifname);
599 	if (addr->type == PF_ADDR_TABLE)
600 		nvlist_add_string(nvl, "tblname", addr->v.tblname);
601 	pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
602 	pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
603 
604 	nvlist_add_nvlist(nvparent, name, nvl);
605 	nvlist_destroy(nvl);
606 }
607 
608 static void
609 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
610 {
611 	bzero(addr, sizeof(*addr));
612 
613 	addr->type = nvlist_get_number(nvl, "type");
614 	addr->iflags = nvlist_get_number(nvl, "iflags");
615 	if (addr->type == PF_ADDR_DYNIFTL) {
616 		strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
617 		    IFNAMSIZ);
618 		addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
619 	}
620 	if (addr->type == PF_ADDR_TABLE) {
621 		strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
622 		    PF_TABLE_NAME_SIZE);
623 		addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
624 	}
625 
626 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
627 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
628 }
629 
630 static void
631 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
632     const struct pf_rule_addr *addr)
633 {
634 	uint64_t ports[2];
635 	nvlist_t *nvl = nvlist_create(0);
636 
637 	pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
638 	ports[0] = addr->port[0];
639 	ports[1] = addr->port[1];
640 	nvlist_add_number_array(nvl, "port", ports, 2);
641 	nvlist_add_number(nvl, "neg", addr->neg);
642 	nvlist_add_number(nvl, "port_op", addr->port_op);
643 
644 	nvlist_add_nvlist(nvparent, name, nvl);
645 	nvlist_destroy(nvl);
646 }
647 
648 static void
649 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
650 {
651 	pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
652 
653 	pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
654 	addr->neg = nvlist_get_number(nvl, "neg");
655 	addr->port_op = nvlist_get_number(nvl, "port_op");
656 }
657 
658 static void
659 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
660 {
661 	mape->offset = nvlist_get_number(nvl, "offset");
662 	mape->psidlen = nvlist_get_number(nvl, "psidlen");
663 	mape->psid = nvlist_get_number(nvl, "psid");
664 }
665 
666 static void
667 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
668 {
669 	size_t len;
670 	const void *data;
671 
672 	data = nvlist_get_binary(nvl, "key", &len);
673 	assert(len == sizeof(pool->key));
674 	memcpy(&pool->key, data, len);
675 
676 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
677 
678 	pool->tblidx = nvlist_get_number(nvl, "tblidx");
679 	pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
680 	pool->opts = nvlist_get_number(nvl, "opts");
681 
682 	if (nvlist_exists_nvlist(nvl, "mape"))
683 		pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
684 }
685 
686 static void
687 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
688 {
689 	pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
690 	uid->op = nvlist_get_number(nvl, "op");
691 }
692 
693 static void
694 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
695 {
696 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
697 	rule->divert.port = nvlist_get_number(nvl, "port");
698 }
699 
700 static void
701 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
702 {
703 	const uint64_t *skip;
704 	const char *const *labels;
705 	size_t skipcount, labelcount;
706 
707 	rule->nr = nvlist_get_number(nvl, "nr");
708 
709 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
710 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
711 
712 	skip = nvlist_get_number_array(nvl, "skip", &skipcount);
713 	assert(skip);
714 	assert(skipcount == PF_SKIP_COUNT);
715 	for (int i = 0; i < PF_SKIP_COUNT; i++)
716 		rule->skip[i].nr = skip[i];
717 
718 	labels = nvlist_get_string_array(nvl, "labels", &labelcount);
719 	assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
720 	for (size_t i = 0; i < labelcount; i++)
721 		strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
722 	rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
723 	strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
724 	strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
725 	strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
726 	strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
727 	    PF_TAG_NAME_SIZE);
728 	strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
729 	    PF_TAG_NAME_SIZE);
730 
731 	strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
732 	    PF_TABLE_NAME_SIZE);
733 
734 	pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr);
735 
736 	rule->evaluations = nvlist_get_number(nvl, "evaluations");
737 	pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
738 	pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
739 
740 	if (nvlist_exists_number(nvl, "timestamp")) {
741 		rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
742 	}
743 
744 	rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
745 
746 	rule->rtableid = nvlist_get_number(nvl, "rtableid");
747 	pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
748 	rule->max_states = nvlist_get_number(nvl, "max_states");
749 	rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
750 	rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
751 	rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
752 	rule->max_src_conn_rate.limit =
753 	    nvlist_get_number(nvl, "max_src_conn_rate.limit");
754 	rule->max_src_conn_rate.seconds =
755 	    nvlist_get_number(nvl, "max_src_conn_rate.seconds");
756 	rule->qid = nvlist_get_number(nvl, "qid");
757 	rule->pqid = nvlist_get_number(nvl, "pqid");
758 	rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
759 	rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
760 	rule->free_flags = nvlist_get_number(nvl, "dnflags");
761 	rule->prob = nvlist_get_number(nvl, "prob");
762 	rule->cuid = nvlist_get_number(nvl, "cuid");
763 	rule->cpid = nvlist_get_number(nvl, "cpid");
764 
765 	rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
766 	rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
767 	rule->max_mss = nvlist_get_number(nvl, "max_mss");
768 	rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
769 
770 	pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
771 	pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
772 	    (struct pf_rule_uid *)&rule->gid);
773 
774 	rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
775 	rule->action = nvlist_get_number(nvl, "action");
776 	rule->direction = nvlist_get_number(nvl, "direction");
777 	rule->log = nvlist_get_number(nvl, "log");
778 	rule->logif = nvlist_get_number(nvl, "logif");
779 	rule->quick = nvlist_get_number(nvl, "quick");
780 	rule->ifnot = nvlist_get_number(nvl, "ifnot");
781 	rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
782 	rule->natpass = nvlist_get_number(nvl, "natpass");
783 
784 	rule->keep_state = nvlist_get_number(nvl, "keep_state");
785 	rule->af = nvlist_get_number(nvl, "af");
786 	rule->proto = nvlist_get_number(nvl, "proto");
787 	rule->type = nvlist_get_number(nvl, "type");
788 	rule->code = nvlist_get_number(nvl, "code");
789 	rule->flags = nvlist_get_number(nvl, "flags");
790 	rule->flagset = nvlist_get_number(nvl, "flagset");
791 	rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
792 	rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
793 	rule->rt = nvlist_get_number(nvl, "rt");
794 	rule->return_ttl  = nvlist_get_number(nvl, "return_ttl");
795 	rule->tos = nvlist_get_number(nvl, "tos");
796 	rule->set_tos = nvlist_get_number(nvl, "set_tos");
797 	rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
798 	rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
799 
800 	rule->flush = nvlist_get_number(nvl, "flush");
801 	rule->prio = nvlist_get_number(nvl, "prio");
802 	pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
803 
804 	pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
805 
806 	rule->states_cur = nvlist_get_number(nvl, "states_cur");
807 	rule->states_tot = nvlist_get_number(nvl, "states_tot");
808 	rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
809 }
810 
811 static void
812 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
813 {
814 	static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
815 	size_t len;
816 	const void *data;
817 
818 	data = nvlist_get_binary(nvl, "addr", &len);
819 	assert(len == sizeof(addr->addr));
820 	memcpy(addr->addr, data, sizeof(addr->addr));
821 
822 	data = nvlist_get_binary(nvl, "mask", &len);
823 	assert(len == sizeof(addr->mask));
824 	memcpy(addr->mask, data, sizeof(addr->mask));
825 
826 	addr->neg = nvlist_get_bool(nvl, "neg");
827 
828 	/* To make checks for 'is this address set?' easier. */
829 	addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
830 }
831 
832 static nvlist_t *
833 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
834 {
835 	nvlist_t *nvl;
836 
837 	nvl = nvlist_create(0);
838 	if (nvl == NULL)
839 		return (NULL);
840 
841 	nvlist_add_bool(nvl, "neg", addr->neg);
842 	nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
843 	nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
844 
845 	return (nvl);
846 }
847 
848 static void
849 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
850 {
851 	const char *const *labels;
852 	size_t labelcount, i;
853 
854 	rule->nr = nvlist_get_number(nvl, "nr");
855 	rule->quick = nvlist_get_bool(nvl, "quick");
856 	strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
857 	rule->ifnot = nvlist_get_bool(nvl, "ifnot");
858 	rule->direction = nvlist_get_number(nvl, "direction");
859 	rule->proto = nvlist_get_number(nvl, "proto");
860 	strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
861 	    PF_TAG_NAME_SIZE);
862 	rule->match_tag = nvlist_get_number(nvl, "match_tag");
863 	rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
864 
865 	labels = nvlist_get_string_array(nvl, "labels", &labelcount);
866 	assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
867 	for (i = 0; i < labelcount; i++)
868 		strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
869 	rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
870 
871 	pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
872 	    &rule->src);
873 	pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
874 	    &rule->dst);
875 
876 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
877 	    &rule->ipsrc);
878 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
879 	    &rule->ipdst);
880 
881 	rule->evaluations = nvlist_get_number(nvl, "evaluations");
882 	rule->packets[0] = nvlist_get_number(nvl, "packets-in");
883 	rule->packets[1] = nvlist_get_number(nvl, "packets-out");
884 	rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
885 	rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
886 
887 	if (nvlist_exists_number(nvl, "timestamp")) {
888 		rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
889 	}
890 
891 	strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
892 	strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
893 	    PF_TAG_NAME_SIZE);
894 
895 	rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
896 	rule->dnflags = nvlist_get_number(nvl, "dnflags");
897 
898 	rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
899 	rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
900 
901 	strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
902 	    IFNAMSIZ);
903 
904 	rule->action = nvlist_get_number(nvl, "action");
905 }
906 
907 int
908 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
909     const char *path)
910 {
911 	nvlist_t *nvl;
912 	int ret;
913 
914 	bzero(ri, sizeof(*ri));
915 
916 	nvl = nvlist_create(0);
917 	nvlist_add_string(nvl, "path", path);
918 
919 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
920 		goto out;
921 
922 	ri->nr = nvlist_get_number(nvl, "nr");
923 
924 out:
925 	nvlist_destroy(nvl);
926 	return (ret);
927 }
928 
929 int
930 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
931     struct pfctl_eth_ruleset_info *ri)
932 {
933 	nvlist_t *nvl;
934 	int ret;
935 
936 	bzero(ri, sizeof(*ri));
937 
938 	nvl = nvlist_create(0);
939 	nvlist_add_string(nvl, "path", path);
940 	nvlist_add_number(nvl, "nr", nr);
941 
942 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
943 		goto out;
944 
945 	ri->nr = nvlist_get_number(nvl, "nr");
946 	strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
947 	strlcpy(ri->name, nvlist_get_string(nvl, "name"),
948 	    PF_ANCHOR_NAME_SIZE);
949 
950 out:
951 	nvlist_destroy(nvl);
952 	return (ret);
953 }
954 
955 int
956 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
957     const char *path)
958 {
959 	nvlist_t *nvl;
960 	int ret;
961 
962 	bzero(rules, sizeof(*rules));
963 
964 	nvl = nvlist_create(0);
965 	nvlist_add_string(nvl, "anchor", path);
966 
967 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
968 		goto out;
969 
970 	rules->nr = nvlist_get_number(nvl, "nr");
971 	rules->ticket = nvlist_get_number(nvl, "ticket");
972 
973 out:
974 	nvlist_destroy(nvl);
975 	return (ret);
976 }
977 
978 int
979 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
980     const char *path, struct pfctl_eth_rule *rule, bool clear,
981     char *anchor_call)
982 {
983 	nvlist_t *nvl;
984 	int ret;
985 
986 	nvl = nvlist_create(0);
987 
988 	nvlist_add_string(nvl, "anchor", path);
989 	nvlist_add_number(nvl, "ticket", ticket);
990 	nvlist_add_number(nvl, "nr", nr);
991 	nvlist_add_bool(nvl, "clear", clear);
992 
993 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
994 		goto out;
995 
996 	pfctl_nveth_rule_to_eth_rule(nvl, rule);
997 
998 	if (anchor_call)
999 		strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1000 		    MAXPATHLEN);
1001 
1002 out:
1003 	nvlist_destroy(nvl);
1004 	return (ret);
1005 }
1006 
1007 int
1008 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
1009     const char *anchor_call, uint32_t ticket)
1010 {
1011 	struct pfioc_nv nv;
1012 	nvlist_t *nvl, *addr;
1013 	void *packed;
1014 	int error = 0;
1015 	size_t labelcount, size;
1016 
1017 	nvl = nvlist_create(0);
1018 
1019 	nvlist_add_number(nvl, "ticket", ticket);
1020 	nvlist_add_string(nvl, "anchor", anchor);
1021 	nvlist_add_string(nvl, "anchor_call", anchor_call);
1022 
1023 	nvlist_add_number(nvl, "nr", r->nr);
1024 	nvlist_add_bool(nvl, "quick", r->quick);
1025 	nvlist_add_string(nvl, "ifname", r->ifname);
1026 	nvlist_add_bool(nvl, "ifnot", r->ifnot);
1027 	nvlist_add_number(nvl, "direction", r->direction);
1028 	nvlist_add_number(nvl, "proto", r->proto);
1029 	nvlist_add_string(nvl, "match_tagname", r->match_tagname);
1030 	nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
1031 
1032 	addr = pfctl_eth_addr_to_nveth_addr(&r->src);
1033 	if (addr == NULL) {
1034 		nvlist_destroy(nvl);
1035 		return (ENOMEM);
1036 	}
1037 	nvlist_add_nvlist(nvl, "src", addr);
1038 	nvlist_destroy(addr);
1039 
1040 	addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
1041 	if (addr == NULL) {
1042 		nvlist_destroy(nvl);
1043 		return (ENOMEM);
1044 	}
1045 	nvlist_add_nvlist(nvl, "dst", addr);
1046 	nvlist_destroy(addr);
1047 
1048 	pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
1049 	pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
1050 
1051 	labelcount = 0;
1052 	while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
1053 	    r->label[labelcount][0] != 0) {
1054 		nvlist_append_string_array(nvl, "labels",
1055 		    r->label[labelcount]);
1056 		labelcount++;
1057 	}
1058 	nvlist_add_number(nvl, "ridentifier", r->ridentifier);
1059 
1060 	nvlist_add_string(nvl, "qname", r->qname);
1061 	nvlist_add_string(nvl, "tagname", r->tagname);
1062 	nvlist_add_number(nvl, "dnpipe", r->dnpipe);
1063 	nvlist_add_number(nvl, "dnflags", r->dnflags);
1064 
1065 	nvlist_add_string(nvl, "bridge_to", r->bridge_to);
1066 
1067 	nvlist_add_number(nvl, "action", r->action);
1068 
1069 	packed = nvlist_pack(nvl, &size);
1070 	if (packed == NULL) {
1071 		nvlist_destroy(nvl);
1072 		return (ENOMEM);
1073 	}
1074 
1075 	nv.len = size;
1076 	nv.size = size;
1077 	nv.data = packed;
1078 
1079 	if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
1080 		error = errno;
1081 
1082 	free(packed);
1083 	nvlist_destroy(nvl);
1084 
1085 	return (error);
1086 }
1087 
1088 static void
1089 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
1090 {
1091 	int off;
1092 
1093 	off = snl_add_msg_attr_nested(nw, type);
1094 
1095 	snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
1096 	snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
1097 
1098 	if (addr->type == PF_ADDR_DYNIFTL)
1099 		snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
1100 	if (addr->type == PF_ADDR_TABLE)
1101 		snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
1102 	snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
1103 	snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
1104 
1105 	snl_end_attr_nested(nw, off);
1106 }
1107 
1108 static void
1109 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa)
1110 {
1111 	int off;
1112 
1113 	off = snl_add_msg_attr_nested(nw, type);
1114 
1115 	snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname);
1116 	snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr);
1117 
1118 	snl_end_attr_nested(nw, off);
1119 }
1120 
1121 static void
1122 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
1123 {
1124 	int off;
1125 
1126 	off = snl_add_msg_attr_nested(nw, type);
1127 
1128 	snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
1129 	snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
1130 	snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
1131 	snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
1132 	snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
1133 
1134 	snl_end_attr_nested(nw, off);
1135 }
1136 
1137 static void
1138 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])
1139 {
1140 	int off, i = 0;
1141 
1142 	off = snl_add_msg_attr_nested(nw, type);
1143 
1144 	while (i < PF_RULE_MAX_LABEL_COUNT &&
1145 	    labels[i][0] != 0) {
1146 		snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
1147 		i++;
1148 	}
1149 
1150 	snl_end_attr_nested(nw, off);
1151 }
1152 
1153 static void
1154 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
1155 {
1156 	int off;
1157 
1158 	off = snl_add_msg_attr_nested(nw, type);
1159 
1160 	snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
1161 	snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
1162 	snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
1163 
1164 	snl_end_attr_nested(nw, off);
1165 }
1166 
1167 static void
1168 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
1169 {
1170 	int off;
1171 
1172 	off = snl_add_msg_attr_nested(nw, type);
1173 
1174 	snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1175 	snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1176 	snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1177 	snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1178 	snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1179 	snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1180 	snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1181 
1182 	snl_end_attr_nested(nw, off);
1183 }
1184 
1185 static void
1186 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1187 {
1188 	int off;
1189 
1190 	off = snl_add_msg_attr_nested(nw, type);
1191 
1192 	for (int i = 0; i < PFTM_MAX; i++)
1193 		snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1194 
1195 	snl_end_attr_nested(nw, off);
1196 }
1197 
1198 static void
1199 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1200 {
1201 	int off;
1202 
1203 	off = snl_add_msg_attr_nested(nw, type);
1204 
1205 	snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1206 	snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1207 	snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1208 
1209 	snl_end_attr_nested(nw, off);
1210 }
1211 
1212 static void
1213 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1214 {
1215 	int off;
1216 
1217 	off = snl_add_msg_attr_nested(nw, type);
1218 
1219 	snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1220 	snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1221 	snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1222 	snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1223 	snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1224 	snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1225 	snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1226 	snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1227 	snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1228 	snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1229 	snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr);
1230 	snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat);
1231 	snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1232 	snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1233 	snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1234 	snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1235 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1236 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1237 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn);
1238 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1239 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1240 
1241 	snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1242 	snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1243 	snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1244 
1245 	snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1246 	snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1247 	snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1248 	snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1249 
1250 	snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1251 	snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1252 	snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1253 	snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1254 
1255 	snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1256 	snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1257 	snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname);
1258 
1259 	snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1260 	snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1261 	snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1262 	snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1263 	snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1264 	snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1265 	snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1266 	snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1267 	snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1268 	snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1269 	snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1270 	snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1271 	snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type);
1272 	snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code);
1273 	snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1274 	snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1275 	snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1276 	snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1277 	snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1278 	snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1279 	snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1280 	snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1281 
1282 	snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1283 	snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1284 	snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1285 	snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1286 	snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1287 	snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1288 
1289 	snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1290 	snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1291 
1292 	snl_end_attr_nested(nw, off);
1293 }
1294 
1295 int
1296 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1297     const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1298 {
1299 	struct pfctl_handle *h;
1300 	int ret;
1301 
1302 	h = pfctl_open(PF_DEVICE);
1303 	if (h == NULL)
1304 		return (ENODEV);
1305 
1306 	ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1307 
1308 	pfctl_close(h);
1309 
1310 	return (ret);
1311 }
1312 
1313 int
1314 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1315 	    const char *anchor, const char *anchor_call, uint32_t ticket,
1316 	    uint32_t pool_ticket)
1317 {
1318 	struct snl_writer nw;
1319 	struct snl_errmsg_data e = {};
1320 	struct nlmsghdr *hdr;
1321 	uint32_t seq_id;
1322 	int family_id;
1323 
1324 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1325 	if (family_id == 0)
1326 		return (ENOTSUP);
1327 
1328 	snl_init_writer(&h->ss, &nw);
1329 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1330 	hdr->nlmsg_flags |= NLM_F_DUMP;
1331 	snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1332 	snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1333 	snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1334 	snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1335 
1336 	snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1337 
1338 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
1339 		return (ENXIO);
1340 
1341 	seq_id = hdr->nlmsg_seq;
1342 
1343 	if (! snl_send_message(&h->ss, hdr))
1344 		return (ENXIO);
1345 
1346 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1347 	}
1348 
1349 	return (e.error);
1350 }
1351 
1352 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1353 #define	_OUT(_field)	offsetof(struct pfctl_rules_info, _field)
1354 static struct snl_attr_parser ap_getrules[] = {
1355 	{ .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1356 	{ .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1357 };
1358 static struct snl_field_parser fp_getrules[] = {
1359 };
1360 #undef _IN
1361 #undef _OUT
1362 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules);
1363 
1364 int
1365 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1366     const char *path)
1367 {
1368 	struct snl_errmsg_data e = {};
1369 	struct nlmsghdr *hdr;
1370 	struct snl_writer nw;
1371 	uint32_t seq_id;
1372 	int family_id;
1373 
1374 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1375 	if (family_id == 0)
1376 		return (ENOTSUP);
1377 
1378 	snl_init_writer(&h->ss, &nw);
1379 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1380 	hdr->nlmsg_flags |= NLM_F_DUMP;
1381 
1382 	snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1383 	snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1384 
1385 	hdr = snl_finalize_msg(&nw);
1386 	if (hdr == NULL)
1387 		return (ENOMEM);
1388 
1389 	seq_id = hdr->nlmsg_seq;
1390 	if (! snl_send_message(&h->ss, hdr))
1391 		return (ENXIO);
1392 
1393 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1394 		if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1395 			continue;
1396 	}
1397 
1398 	return (e.error);
1399 }
1400 
1401 int
1402 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1403     const char *path)
1404 {
1405 	struct pfctl_handle *h;
1406 	int error;
1407 
1408 	h = pfctl_open(PF_DEVICE);
1409 	if (h == NULL)
1410 		return (ENOTSUP);
1411 	error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1412 	pfctl_close(h);
1413 
1414 	return (error);
1415 }
1416 
1417 int
1418 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1419     uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1420 {
1421 	return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1422 	    anchor_call, false));
1423 }
1424 
1425 int
1426 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1427     uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1428 {
1429 	return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1430 	    anchor_call, false));
1431 }
1432 
1433 #define _OUT(_field)	offsetof(struct pf_addr_wrap, _field)
1434 static const struct snl_attr_parser ap_addr_wrap[] = {
1435 	{ .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1436 	{ .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1437 	{ .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1438 	{ .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1439 	{ .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1440 	{ .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1441 	{ .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1442 	{ .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1443 };
1444 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1445 #undef _OUT
1446 
1447 #define _OUT(_field)	offsetof(struct pf_rule_addr, _field)
1448 static struct snl_attr_parser ap_rule_addr[] = {
1449 	{ .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1450 	{ .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1451 	{ .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1452 	{ .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1453 	{ .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1454 };
1455 #undef _OUT
1456 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1457 
1458 struct snl_parsed_labels
1459 {
1460 	char		labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1461 	uint32_t	i;
1462 };
1463 
1464 static bool
1465 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1466     const void *arg __unused, void *target)
1467 {
1468 	struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1469 	bool ret;
1470 
1471 	if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1472 		return (E2BIG);
1473 
1474 	ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1475 	    l->labels[l->i]);
1476 	if (ret)
1477 		l->i++;
1478 
1479 	return (ret);
1480 }
1481 
1482 #define _OUT(_field)	offsetof(struct nl_parsed_labels, _field)
1483 static const struct snl_attr_parser ap_labels[] = {
1484 	{ .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1485 };
1486 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1487 #undef _OUT
1488 
1489 static bool
1490 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1491     const void *arg __unused, void *target)
1492 {
1493 	struct snl_parsed_labels parsed_labels = { };
1494 	bool error;
1495 
1496 	/* Assumes target points to the beginning of the structure */
1497 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1498 	if (! error)
1499 		return (error);
1500 
1501 	memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1502 
1503 	return (true);
1504 }
1505 
1506 #define _OUT(_field)	offsetof(struct pf_mape_portset, _field)
1507 static const struct snl_attr_parser ap_mape_portset[] = {
1508 	{ .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1509 	{ .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1510 	{. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1511 };
1512 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1513 #undef _OUT
1514 
1515 #define _OUT(_field)	offsetof(struct pfctl_pool, _field)
1516 static const struct snl_attr_parser ap_pool[] = {
1517 	{ .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1518 	{ .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1519 	{ .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1520 	{ .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1521 	{ .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1522 	{ .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1523 	{ .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1524 };
1525 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1526 #undef _OUT
1527 
1528 struct nl_parsed_timeouts
1529 {
1530 	uint32_t	timeouts[PFTM_MAX];
1531 	uint32_t	i;
1532 };
1533 
1534 static bool
1535 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1536     const void *arg __unused, void *target)
1537 {
1538 	struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1539 	bool ret;
1540 
1541 	if (t->i >= PFTM_MAX)
1542 		return (E2BIG);
1543 
1544 	ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1545 	if (ret)
1546 		t->i++;
1547 
1548 	return (ret);
1549 }
1550 
1551 #define _OUT(_field)	offsetof(struct nl_parsed_timeout, _field)
1552 static const struct snl_attr_parser ap_timeouts[] = {
1553 	{ .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1554 };
1555 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1556 #undef _OUT
1557 
1558 static bool
1559 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1560     const void *arg __unused, void *target)
1561 {
1562 	struct nl_parsed_timeouts parsed_timeouts = { };
1563 	bool error;
1564 
1565 	/* Assumes target points to the beginning of the structure */
1566 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1567 	if (! error)
1568 		return (error);
1569 
1570 	memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1571 
1572 	return (true);
1573 }
1574 
1575 #define _OUT(_field)	offsetof(struct pf_rule_uid, _field)
1576 static const struct snl_attr_parser ap_rule_uid[] = {
1577 	{ .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1578 	{ .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1579 	{ .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1580 };
1581 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1582 #undef _OUT
1583 
1584 struct pfctl_nl_get_rule {
1585 	struct pfctl_rule r;
1586 	char anchor_call[MAXPATHLEN];
1587 };
1588 #define	_OUT(_field)	offsetof(struct pfctl_nl_get_rule, _field)
1589 static struct snl_attr_parser ap_getrule[] = {
1590 	{ .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1591 	{ .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1592 	{ .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1593 	{ .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1594 	{ .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1595 	{ .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1596 	{ .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1597 	{ .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1598 	{ .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1599 	{ .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1600 	{ .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested },
1601 	{ .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1602 	{ .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1603 	{ .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1604 	{ .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1605 	{ .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1606 	{ .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1607 	{ .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1608 	{ .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1609 	{ .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1610 	{ .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1611 	{ .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1612 	{ .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1613 	{ .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1614 	{ .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1615 	{. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1616 	{ .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1617 	{ .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1618 	{ .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1619 	{ .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1620 	{ .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1621 	{ .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1622 	{ .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1623 	{ .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1624 	{ .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1625 	{ .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1626 	{ .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1627 	{ .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1628 	{ .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1629 	{ .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1630 	{ .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1631 	{ .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1632 	{ .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1633 	{ .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1634 	{ .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1635 	{ .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1636 	{ .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1637 	{ .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1638 	{ .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1639 	{ .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1640 	{ .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1641 	{ .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1642 	{ .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1643 	{ .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1644 	{ .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1645 	{ .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1646 	{ .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1647 	{ .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1648 	{ .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1649 	{ .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1650 	{ .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1651 	{ .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1652 	{ .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1653 	{ .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1654 	{ .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1655 	{ .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1656 	{ .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1657 	{ .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1658 	{ .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1659 	{ .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1660 	{ .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1661 	{ .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1662 	{ .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string },
1663 	{ .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 },
1664 	{ .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested },
1665 };
1666 static struct snl_field_parser fp_getrule[] = {};
1667 #undef _OUT
1668 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, ap_getrule);
1669 
1670 int
1671 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1672     const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1673     char *anchor_call, bool clear)
1674 {
1675 	struct pfctl_nl_get_rule attrs = {};
1676 	struct snl_errmsg_data e = {};
1677 	struct nlmsghdr *hdr;
1678 	struct snl_writer nw;
1679 	uint32_t seq_id;
1680 	int family_id;
1681 
1682 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1683 	if (family_id == 0)
1684 		return (ENOTSUP);
1685 
1686 	snl_init_writer(&h->ss, &nw);
1687 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1688 	hdr->nlmsg_flags |= NLM_F_DUMP;
1689 
1690 	snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1691 	snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1692 	snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1693 	snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1694 	snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1695 
1696 	hdr = snl_finalize_msg(&nw);
1697 	if (hdr == NULL)
1698 		return (ENOMEM);
1699 
1700 	seq_id = hdr->nlmsg_seq;
1701 	if (! snl_send_message(&h->ss, hdr))
1702 		return (ENXIO);
1703 
1704 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1705 		if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1706 			continue;
1707 	}
1708 
1709 	memcpy(rule, &attrs.r, sizeof(attrs.r));
1710 	strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1711 
1712 	return (e.error);
1713 }
1714 
1715 int
1716 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1717 	    const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1718 	    char *anchor_call, bool clear)
1719 {
1720 	nvlist_t *nvl;
1721 	int ret;
1722 
1723 	nvl = nvlist_create(0);
1724 	if (nvl == 0)
1725 		return (ENOMEM);
1726 
1727 	nvlist_add_number(nvl, "nr", nr);
1728 	nvlist_add_number(nvl, "ticket", ticket);
1729 	nvlist_add_string(nvl, "anchor", anchor);
1730 	nvlist_add_number(nvl, "ruleset", ruleset);
1731 
1732 	if (clear)
1733 		nvlist_add_bool(nvl, "clear_counter", true);
1734 
1735 	if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1736 		goto out;
1737 
1738 	pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1739 
1740 	if (anchor_call)
1741 		strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1742 		    MAXPATHLEN);
1743 
1744 out:
1745 	nvlist_destroy(nvl);
1746 	return (ret);
1747 }
1748 
1749 int
1750 pfctl_set_keepcounters(int dev, bool keep)
1751 {
1752 	struct pfioc_nv	 nv;
1753 	nvlist_t	*nvl;
1754 	int		 ret;
1755 
1756 	nvl = nvlist_create(0);
1757 
1758 	nvlist_add_bool(nvl, "keep_counters", keep);
1759 
1760 	nv.data = nvlist_pack(nvl, &nv.len);
1761 	nv.size = nv.len;
1762 
1763 	nvlist_destroy(nvl);
1764 
1765 	ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1766 
1767 	free(nv.data);
1768 	return (ret);
1769 }
1770 
1771 struct pfctl_creator {
1772 	uint32_t id;
1773 };
1774 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1775 #define	_OUT(_field)	offsetof(struct pfctl_creator, _field)
1776 static struct snl_attr_parser ap_creators[] = {
1777 	{ .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1778 };
1779 static struct snl_field_parser fp_creators[] = {
1780 };
1781 #undef _IN
1782 #undef _OUT
1783 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators);
1784 
1785 static int
1786 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1787 {
1788 
1789 	int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1790 	size_t i = 0;
1791 
1792 	struct nlmsghdr *hdr;
1793 	struct snl_writer nw;
1794 
1795 	if (family_id == 0)
1796 		return (ENOTSUP);
1797 
1798 	snl_init_writer(ss, &nw);
1799 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1800 	hdr->nlmsg_flags |= NLM_F_DUMP;
1801 	hdr = snl_finalize_msg(&nw);
1802 	if (hdr == NULL)
1803 		return (ENOMEM);
1804 	uint32_t seq_id = hdr->nlmsg_seq;
1805 
1806 	snl_send_message(ss, hdr);
1807 
1808 	struct snl_errmsg_data e = {};
1809 	while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1810 		struct pfctl_creator c;
1811 		bzero(&c, sizeof(c));
1812 
1813 		if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1814 			continue;
1815 
1816 		creators[i] = c.id;
1817 		i++;
1818 		if (i > *len)
1819 			return (E2BIG);
1820 	}
1821 
1822 	*len = i;
1823 
1824 	return (0);
1825 }
1826 
1827 int
1828 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1829 {
1830 	int error;
1831 
1832 	error = pfctl_get_creators_nl(&h->ss, creators, len);
1833 
1834 	return (error);
1835 }
1836 
1837 static inline bool
1838 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1839     const void *arg __unused, void *target)
1840 {
1841 	memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1842 	return (true);
1843 }
1844 
1845 static inline bool
1846 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1847     const void *arg __unused, void *target)
1848 {
1849 	size_t maxlen = NLA_DATA_LEN(nla);
1850 
1851 	if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1852 		strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1853 		return (true);
1854 	}
1855 	return (false);
1856 }
1857 
1858 #define	_OUT(_field)	offsetof(struct pfctl_state_peer, _field)
1859 static const struct snl_attr_parser nla_p_speer[] = {
1860 	{ .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1861 	{ .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1862 	{ .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1863 	{ .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1864 	{ .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1865 };
1866 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1867 #undef _OUT
1868 
1869 #define	_OUT(_field)	offsetof(struct pfctl_state_key, _field)
1870 static const struct snl_attr_parser nla_p_skey[] = {
1871 	{ .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1872 	{ .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1873 	{ .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1874 	{ .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1875 	{ .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
1876 	{ .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 },
1877 };
1878 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1879 #undef _OUT
1880 
1881 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1882 #define	_OUT(_field)	offsetof(struct pfctl_state, _field)
1883 static struct snl_attr_parser ap_state[] = {
1884 	{ .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1885 	{ .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1886 	{ .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1887 	{ .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1888 	{ .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1889 	{ .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1890 	{ .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1891 	{ .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1892 	{ .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1893 	{ .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1894 	{ .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1895 	{ .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1896 	{ .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1897 	{ .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1898 	{ .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1899 	{ .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1900 	{ .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1901 	{ .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1902 	{ .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1903 	{ .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1904 	{ .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1905 	{ .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1906 	{ .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1907 	{ .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1908 	{ .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1909 	{ .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1910 	{ .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1911 	{ .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1912 	{ .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1913 };
1914 static struct snl_field_parser fp_state[] = {
1915 };
1916 #undef _IN
1917 #undef _OUT
1918 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, ap_state);
1919 
1920 static const struct snl_hdr_parser *all_parsers[] = {
1921 	&state_parser, &skey_parser, &speer_parser,
1922 	&creator_parser, &getrules_parser
1923 };
1924 
1925 static int
1926 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1927 {
1928 	SNL_VERIFY_PARSERS(all_parsers);
1929 	int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1930 	int ret;
1931 
1932 	struct nlmsghdr *hdr;
1933 	struct snl_writer nw;
1934 
1935 	if (family_id == 0)
1936 		return (ENOTSUP);
1937 
1938 	snl_init_writer(ss, &nw);
1939 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1940 	hdr->nlmsg_flags |= NLM_F_DUMP;
1941 	snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1942 	snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1943 	snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1944 	snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1945 	snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1946 
1947 	hdr = snl_finalize_msg(&nw);
1948 	if (hdr == NULL)
1949 		return (ENOMEM);
1950 
1951 	uint32_t seq_id = hdr->nlmsg_seq;
1952 
1953 	snl_send_message(ss, hdr);
1954 
1955 	struct snl_errmsg_data e = {};
1956 	while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1957 		struct pfctl_state s;
1958 		bzero(&s, sizeof(s));
1959 		if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1960 			continue;
1961 
1962 		ret = f(&s, arg);
1963 		if (ret != 0)
1964 			return (ret);
1965 	}
1966 
1967 	return (0);
1968 }
1969 
1970 int
1971 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1972 {
1973 	struct pfctl_state_filter filter = {};
1974 	return (pfctl_get_filtered_states_iter(&filter, f, arg));
1975 }
1976 
1977 int
1978 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1979 {
1980 	struct snl_state ss = {};
1981 	int error;
1982 
1983 	snl_init(&ss, NETLINK_GENERIC);
1984 	error = pfctl_get_states_nl(filter, &ss, f, arg);
1985 	snl_free(&ss);
1986 
1987 	return (error);
1988 }
1989 
1990 static int
1991 pfctl_append_states(struct pfctl_state *s, void *arg)
1992 {
1993 	struct pfctl_state *new;
1994 	struct pfctl_states *states = (struct pfctl_states *)arg;
1995 
1996 	new = malloc(sizeof(*s));
1997 	if (new == NULL)
1998 		return (ENOMEM);
1999 
2000 	memcpy(new, s, sizeof(*s));
2001 
2002 	TAILQ_INSERT_TAIL(&states->states, new, entry);
2003 
2004 	return (0);
2005 }
2006 
2007 int
2008 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2009 {
2010 	int ret;
2011 
2012 	bzero(states, sizeof(*states));
2013 	TAILQ_INIT(&states->states);
2014 
2015 	ret = pfctl_get_states_iter(pfctl_append_states, states);
2016 	if (ret != 0) {
2017 		pfctl_free_states(states);
2018 		return (ret);
2019 	}
2020 
2021 	return (0);
2022 }
2023 
2024 void
2025 pfctl_free_states(struct pfctl_states *states)
2026 {
2027 	struct pfctl_state *s, *tmp;
2028 
2029 	TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2030 		free(s);
2031 	}
2032 
2033 	bzero(states, sizeof(*states));
2034 }
2035 
2036 struct pfctl_nl_clear_states {
2037 	uint32_t killed;
2038 };
2039 #define	_OUT(_field)	offsetof(struct pfctl_nl_clear_states, _field)
2040 static struct snl_attr_parser ap_clear_states[] = {
2041 	{ .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2042 };
2043 static struct snl_field_parser fp_clear_states[] = {};
2044 #undef _OUT
2045 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states);
2046 
2047 static int
2048 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2049     unsigned int *killed, int cmd)
2050 {
2051 	struct snl_writer nw;
2052 	struct snl_errmsg_data e = {};
2053 	struct pfctl_nl_clear_states attrs = {};
2054 	struct nlmsghdr *hdr;
2055 	uint32_t seq_id;
2056 	int family_id;
2057 
2058 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2059 	if (family_id == 0)
2060 		return (ENOTSUP);
2061 
2062 	snl_init_writer(&h->ss, &nw);
2063 	hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2064 	hdr->nlmsg_flags |= NLM_F_DUMP;
2065 
2066 	snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2067 	snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2068 	snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2069 	snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2070 	snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2071 	snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2072 	snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2073 	snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2074 	snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2075 	snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2076 	snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2077 	snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2078 
2079 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2080 		return (ENXIO);
2081 
2082 	seq_id = hdr->nlmsg_seq;
2083 
2084 	if (! snl_send_message(&h->ss, hdr))
2085 		return (ENXIO);
2086 
2087 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2088 		if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2089 			continue;
2090 	}
2091 
2092 	if (killed)
2093 		*killed = attrs.killed;
2094 
2095 	return (e.error);
2096 }
2097 
2098 int
2099 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2100     unsigned int *killed)
2101 {
2102 	return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2103 }
2104 
2105 int
2106 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2107     unsigned int *killed)
2108 {
2109 	return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2110 }
2111 
2112 static int
2113 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2114     unsigned int *killed, uint64_t cmd)
2115 {
2116 	struct pfctl_handle *h;
2117 	int ret;
2118 
2119 	h = pfctl_open(PF_DEVICE);
2120 	if (h == NULL)
2121 		return (ENODEV);
2122 
2123 	ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2124 	pfctl_close(h);
2125 
2126 	return (ret);
2127 }
2128 
2129 int
2130 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2131     unsigned int *killed)
2132 {
2133 	return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2134 }
2135 
2136 int
2137 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2138 {
2139 	return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2140 }
2141 
2142 int
2143 pfctl_clear_rules(int dev, const char *anchorname)
2144 {
2145 	struct pfioc_trans trans;
2146 	struct pfioc_trans_e transe[2];
2147 	int ret;
2148 
2149 	bzero(&trans, sizeof(trans));
2150 	bzero(&transe, sizeof(transe));
2151 
2152 	transe[0].rs_num = PF_RULESET_SCRUB;
2153 	if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2154 	    >= sizeof(transe[0].anchor))
2155 		return (E2BIG);
2156 
2157 	transe[1].rs_num = PF_RULESET_FILTER;
2158 	if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2159 	    >= sizeof(transe[1].anchor))
2160 		return (E2BIG);
2161 
2162 	trans.size = 2;
2163 	trans.esize = sizeof(transe[0]);
2164 	trans.array = transe;
2165 
2166 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2167 	if (ret != 0)
2168 		return (errno);
2169 	ret = ioctl(dev, DIOCXCOMMIT, &trans);
2170 	if (ret != 0)
2171 		return (errno);
2172 
2173 	return (0);
2174 }
2175 
2176 int
2177 pfctl_clear_nat(int dev, const char *anchorname)
2178 {
2179 	struct pfioc_trans trans;
2180 	struct pfioc_trans_e transe[3];
2181 	int ret;
2182 
2183 	bzero(&trans, sizeof(trans));
2184 	bzero(&transe, sizeof(transe));
2185 
2186 	transe[0].rs_num = PF_RULESET_NAT;
2187 	if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2188 	    >= sizeof(transe[0].anchor))
2189 		return (E2BIG);
2190 
2191 	transe[1].rs_num = PF_RULESET_BINAT;
2192 	if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2193 	    >= sizeof(transe[0].anchor))
2194 		return (E2BIG);
2195 
2196 	transe[2].rs_num = PF_RULESET_RDR;
2197 	if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2198 	    >= sizeof(transe[2].anchor))
2199 		return (E2BIG);
2200 
2201 	trans.size = 3;
2202 	trans.esize = sizeof(transe[0]);
2203 	trans.array = transe;
2204 
2205 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2206 	if (ret != 0)
2207 		return (errno);
2208 	ret = ioctl(dev, DIOCXCOMMIT, &trans);
2209 	if (ret != 0)
2210 		return (errno);
2211 
2212 	return (0);
2213 }
2214 
2215 int
2216 pfctl_clear_eth_rules(int dev, const char *anchorname)
2217 {
2218 	struct pfioc_trans trans;
2219 	struct pfioc_trans_e transe;
2220 	int ret;
2221 
2222 	bzero(&trans, sizeof(trans));
2223 	bzero(&transe, sizeof(transe));
2224 
2225 	transe.rs_num = PF_RULESET_ETH;
2226 	if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2227 	    >= sizeof(transe.anchor))
2228 		return (E2BIG);
2229 
2230 	trans.size = 1;
2231 	trans.esize = sizeof(transe);
2232 	trans.array = &transe;
2233 
2234 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2235 	if (ret != 0)
2236 		return (errno);
2237 	ret = ioctl(dev, DIOCXCOMMIT, &trans);
2238 	if (ret != 0)
2239 		return (errno);
2240 
2241 	return (0);
2242 }
2243 
2244 static int
2245 _pfctl_get_limit(int dev, const int index, uint *limit)
2246 {
2247 	struct pfioc_limit pl;
2248 
2249 	bzero(&pl, sizeof(pl));
2250 	pl.index = index;
2251 
2252 	if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2253 		return (errno);
2254 
2255 	*limit = pl.limit;
2256 
2257 	return (0);
2258 }
2259 
2260 int
2261 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2262 {
2263 	struct pfioc_nv	 nv;
2264 	nvlist_t	*nvl;
2265 	int		 ret;
2266 	uint		 state_limit;
2267 	uint64_t	 lim, hi, lo;
2268 
2269 	ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2270 	if (ret != 0)
2271 		return (ret);
2272 
2273 	lim = state_limit;
2274 	hi = lim * s->highwater / 100;
2275 	lo = lim * s->lowwater / 100;
2276 
2277 	if (lo == hi)
2278 		hi++;
2279 
2280 	nvl = nvlist_create(0);
2281 
2282 	nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2283 	nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2284 	nvlist_add_number(nvl, "highwater", hi);
2285 	nvlist_add_number(nvl, "lowwater", lo);
2286 
2287 	nv.data = nvlist_pack(nvl, &nv.len);
2288 	nv.size = nv.len;
2289 	nvlist_destroy(nvl);
2290 	nvl = NULL;
2291 
2292 	ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2293 
2294 	free(nv.data);
2295 	if (ret != 0)
2296 		return (errno);
2297 
2298 	return (0);
2299 }
2300 
2301 int
2302 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2303 {
2304 	nvlist_t	*nvl;
2305 	int		 ret;
2306 	uint		 state_limit;
2307 	bool		 enabled, adaptive;
2308 
2309 	ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2310 	if (ret != 0)
2311 		return (ret);
2312 
2313 	bzero(s, sizeof(*s));
2314 
2315 	nvl = nvlist_create(0);
2316 
2317 	if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2318 		ret = errno;
2319 		goto out;
2320 	}
2321 
2322 	enabled = nvlist_get_bool(nvl, "enabled");
2323 	adaptive = nvlist_get_bool(nvl, "adaptive");
2324 
2325 	if (enabled) {
2326 		if (adaptive)
2327 			s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2328 		else
2329 			s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2330 	} else {
2331 		s->mode = PFCTL_SYNCOOKIES_NEVER;
2332 	}
2333 
2334 	s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2335 	s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2336 	s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2337 
2338 out:
2339 	nvlist_destroy(nvl);
2340 	return (ret);
2341 }
2342 
2343 int
2344 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2345     *addr, int size, int *nadd, int flags)
2346 {
2347 	struct pfioc_table io;
2348 
2349 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2350 		return (EINVAL);
2351 	}
2352 	bzero(&io, sizeof io);
2353 	io.pfrio_flags = flags;
2354 	io.pfrio_table = *tbl;
2355 	io.pfrio_buffer = addr;
2356 	io.pfrio_esize = sizeof(*addr);
2357 	io.pfrio_size = size;
2358 
2359 	if (ioctl(dev, DIOCRADDADDRS, &io))
2360 		return (errno);
2361 	if (nadd != NULL)
2362 		*nadd = io.pfrio_nadd;
2363 	return (0);
2364 }
2365 
2366 int
2367 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2368     *addr, int size, int *ndel, int flags)
2369 {
2370 	struct pfioc_table io;
2371 
2372 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2373 		return (EINVAL);
2374 	}
2375 	bzero(&io, sizeof io);
2376 	io.pfrio_flags = flags;
2377 	io.pfrio_table = *tbl;
2378 	io.pfrio_buffer = addr;
2379 	io.pfrio_esize = sizeof(*addr);
2380 	io.pfrio_size = size;
2381 
2382 	if (ioctl(dev, DIOCRDELADDRS, &io))
2383 		return (errno);
2384 	if (ndel != NULL)
2385 		*ndel = io.pfrio_ndel;
2386 	return (0);
2387 }
2388 
2389 int
2390 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2391     *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2392 {
2393 	struct pfioc_table io;
2394 
2395 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2396 		return (EINVAL);
2397 	}
2398 	bzero(&io, sizeof io);
2399 	io.pfrio_flags = flags;
2400 	io.pfrio_table = *tbl;
2401 	io.pfrio_buffer = addr;
2402 	io.pfrio_esize = sizeof(*addr);
2403 	io.pfrio_size = size;
2404 	io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2405 	if (ioctl(dev, DIOCRSETADDRS, &io))
2406 		return (errno);
2407 	if (nadd != NULL)
2408 		*nadd = io.pfrio_nadd;
2409 	if (ndel != NULL)
2410 		*ndel = io.pfrio_ndel;
2411 	if (nchange != NULL)
2412 		*nchange = io.pfrio_nchange;
2413 	if (size2 != NULL)
2414 		*size2 = io.pfrio_size2;
2415 	return (0);
2416 }
2417 
2418 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2419     int *size, int flags)
2420 {
2421 	struct pfioc_table io;
2422 
2423 	if (tbl == NULL || size == NULL || *size < 0 ||
2424 	    (*size && addr == NULL)) {
2425 		return (EINVAL);
2426 	}
2427 	bzero(&io, sizeof io);
2428 	io.pfrio_flags = flags;
2429 	io.pfrio_table = *tbl;
2430 	io.pfrio_buffer = addr;
2431 	io.pfrio_esize = sizeof(*addr);
2432 	io.pfrio_size = *size;
2433 	if (ioctl(dev, DIOCRGETADDRS, &io))
2434 		return (errno);
2435 	*size = io.pfrio_size;
2436 	return (0);
2437 }
2438 
2439 int
2440 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2441 {
2442 	struct snl_writer nw;
2443 	struct snl_errmsg_data e = {};
2444 	struct nlmsghdr *hdr;
2445 	uint32_t seq_id;
2446 	int family_id;
2447 
2448 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2449 	if (family_id == 0)
2450 		return (ENOTSUP);
2451 
2452 	snl_init_writer(&h->ss, &nw);
2453 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2454 
2455 	snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2456 
2457 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2458 		return (ENXIO);
2459 
2460 	seq_id = hdr->nlmsg_seq;
2461 
2462 	if (! snl_send_message(&h->ss, hdr))
2463 		return (ENXIO);
2464 
2465 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2466 	}
2467 
2468 	return (e.error);
2469 }
2470 
2471 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
2472 #define	_OUT(_field)	offsetof(struct pfctl_natlook, _field)
2473 static struct snl_attr_parser ap_natlook[] = {
2474 	{ .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2475 	{ .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2476 	{ .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2477 	{ .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2478 };
2479 static struct snl_field_parser fp_natlook[] = {};
2480 #undef _IN
2481 #undef _OUT
2482 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, fp_natlook, ap_natlook);
2483 
2484 int
2485 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2486     struct pfctl_natlook *r)
2487 {
2488 	struct snl_writer nw;
2489 	struct snl_errmsg_data e = {};
2490 	struct nlmsghdr *hdr;
2491 	uint32_t seq_id;
2492 	int family_id;
2493 
2494 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2495 	if (family_id == 0)
2496 		return (ENOTSUP);
2497 
2498 	snl_init_writer(&h->ss, &nw);
2499 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2500 	hdr->nlmsg_flags |= NLM_F_DUMP;
2501 
2502 	snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2503 	snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2504 	snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2505 	snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2506 	snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2507 	snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2508 	snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2509 
2510 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2511 		return (ENXIO);
2512 
2513 	seq_id = hdr->nlmsg_seq;
2514 
2515 	if (! snl_send_message(&h->ss, hdr))
2516 		return (ENXIO);
2517 
2518 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2519 		if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2520 			continue;
2521 	}
2522 
2523 	return (e.error);
2524 }
2525 
2526 int
2527 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2528 {
2529 	struct snl_writer nw;
2530 	struct snl_errmsg_data e = {};
2531 	struct nlmsghdr *hdr;
2532 	uint32_t seq_id;
2533 	int family_id;
2534 
2535 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2536 	if (family_id == 0)
2537 		return (ENOTSUP);
2538 
2539 	snl_init_writer(&h->ss, &nw);
2540 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2541 
2542 	snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2543 
2544 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2545 		return (ENXIO);
2546 
2547 	seq_id = hdr->nlmsg_seq;
2548 
2549 	if (! snl_send_message(&h->ss, hdr))
2550 		return (ENXIO);
2551 
2552 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2553 	}
2554 
2555 	return (e.error);
2556 }
2557 
2558 int
2559 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2560 {
2561 	struct snl_writer nw;
2562 	struct snl_errmsg_data e = {};
2563 	struct nlmsghdr *hdr;
2564 	uint32_t seq_id;
2565 	int family_id;
2566 
2567 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2568 	if (family_id == 0)
2569 		return (ENOTSUP);
2570 
2571 	snl_init_writer(&h->ss, &nw);
2572 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2573 
2574 	snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2575 	snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2576 
2577 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2578 		return (ENXIO);
2579 
2580 	seq_id = hdr->nlmsg_seq;
2581 
2582 	if (! snl_send_message(&h->ss, hdr))
2583 		return (ENXIO);
2584 
2585 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2586 	}
2587 
2588 	return (e.error);
2589 }
2590 
2591 struct pfctl_nl_timeout {
2592 	uint32_t seconds;
2593 };
2594 #define	_OUT(_field)	offsetof(struct pfctl_nl_timeout, _field)
2595 static struct snl_attr_parser ap_get_timeout[] = {
2596 	{ .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2597 };
2598 static struct snl_field_parser fp_get_timeout[] = {};
2599 #undef _OUT
2600 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, fp_get_timeout, ap_get_timeout);
2601 
2602 int
2603 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2604 {
2605 	struct snl_writer nw;
2606 	struct pfctl_nl_timeout to = {};
2607 	struct snl_errmsg_data e = {};
2608 	struct nlmsghdr *hdr;
2609 	uint32_t seq_id;
2610 	int family_id;
2611 
2612 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2613 	if (family_id == 0)
2614 		return (ENOTSUP);
2615 
2616 	snl_init_writer(&h->ss, &nw);
2617 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
2618 	hdr->nlmsg_flags |= NLM_F_DUMP;
2619 
2620 	snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2621 
2622 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2623 		return (ENXIO);
2624 
2625 	seq_id = hdr->nlmsg_seq;
2626 
2627 	if (! snl_send_message(&h->ss, hdr))
2628 		return (ENXIO);
2629 
2630 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2631 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
2632 			continue;
2633 	}
2634 
2635 	if (seconds != NULL)
2636 		*seconds = to.seconds;
2637 
2638 	return (e.error);
2639 }
2640 
2641 int
2642 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
2643 {
2644 	struct snl_writer nw;
2645 	struct snl_errmsg_data e = {};
2646 	struct nlmsghdr *hdr;
2647 	uint32_t seq_id;
2648 	int family_id;
2649 
2650 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2651 	if (family_id == 0)
2652 		return (ENOTSUP);
2653 
2654 	snl_init_writer(&h->ss, &nw);
2655 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
2656 
2657 	snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2658 	snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
2659 
2660 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2661 		return (ENXIO);
2662 
2663 	seq_id = hdr->nlmsg_seq;
2664 
2665 	if (! snl_send_message(&h->ss, hdr))
2666 		return (ENXIO);
2667 
2668 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2669 	}
2670 
2671 	return (e.error);
2672 }
2673 
2674 struct pfctl_nl_limit {
2675 	unsigned int limit;
2676 };
2677 #define	_OUT(_field)	offsetof(struct pfctl_nl_limit, _field)
2678 static struct snl_attr_parser ap_get_limit[] = {
2679 	{ .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2680 };
2681 static struct snl_field_parser fp_get_limit[] = {};
2682 #undef _OUT
2683 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, fp_get_limit, ap_get_limit);
2684 
2685 int
2686 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
2687 {
2688 	struct snl_writer nw;
2689 	struct pfctl_nl_limit li = {};
2690 	struct snl_errmsg_data e = {};
2691 	struct nlmsghdr *hdr;
2692 	uint32_t seq_id;
2693 	int family_id;
2694 
2695 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2696 	if (family_id == 0)
2697 		return (ENOTSUP);
2698 
2699 	snl_init_writer(&h->ss, &nw);
2700 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
2701 	hdr->nlmsg_flags |= NLM_F_DUMP;
2702 
2703 	snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2704 
2705 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2706 		return (ENXIO);
2707 
2708 	seq_id = hdr->nlmsg_seq;
2709 
2710 	if (! snl_send_message(&h->ss, hdr))
2711 		return (ENXIO);
2712 
2713 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2714 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
2715 			continue;
2716 	}
2717 
2718 	if (limit != NULL)
2719 		*limit = li.limit;
2720 
2721 	return (e.error);
2722 }
2723 
2724 struct pfctl_nl_begin_addrs {
2725 	uint32_t ticket;
2726 };
2727 #define	_OUT(_field)	offsetof(struct pfctl_nl_begin_addrs, _field)
2728 static struct snl_attr_parser ap_begin_addrs[] = {
2729 	{ .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2730 };
2731 static struct snl_field_parser fp_begin_addrs[] = {};
2732 #undef _OUT
2733 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, fp_begin_addrs, ap_begin_addrs);
2734 
2735 int
2736 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
2737 {
2738 	struct snl_writer nw;
2739 	struct pfctl_nl_begin_addrs attrs = {};
2740 	struct snl_errmsg_data e = {};
2741 	struct nlmsghdr *hdr;
2742 	uint32_t seq_id;
2743 	int family_id;
2744 
2745 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2746 	if (family_id == 0)
2747 		return (ENOTSUP);
2748 
2749 	snl_init_writer(&h->ss, &nw);
2750 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
2751 	hdr->nlmsg_flags |= NLM_F_DUMP;
2752 
2753 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2754 		return (ENXIO);
2755 
2756 	seq_id = hdr->nlmsg_seq;
2757 
2758 	if (! snl_send_message(&h->ss, hdr))
2759 		return (ENXIO);
2760 
2761 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2762 		if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
2763 			continue;
2764 	}
2765 
2766 	if (ticket != NULL)
2767 		*ticket = attrs.ticket;
2768 
2769 	return (e.error);
2770 }
2771 
2772 int
2773 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which __unused)
2774 {
2775 	struct snl_writer nw;
2776 	struct snl_errmsg_data e = {};
2777 	struct nlmsghdr *hdr;
2778 	uint32_t seq_id;
2779 	int family_id;
2780 
2781 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2782 	if (family_id == 0)
2783 		return (ENOTSUP);
2784 
2785 	snl_init_writer(&h->ss, &nw);
2786 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
2787 
2788 	snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
2789 	snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
2790 	snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
2791 	snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
2792 	snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
2793 	snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
2794 	snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
2795 	snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
2796 	snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
2797 
2798 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2799 		return (ENXIO);
2800 
2801 	seq_id = hdr->nlmsg_seq;
2802 
2803 	if (! snl_send_message(&h->ss, hdr))
2804 		return (ENXIO);
2805 
2806 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2807 	}
2808 
2809 	return (e.error);
2810 }
2811 
2812 static const struct snl_attr_parser ap_get_addrs[] = {
2813 	{ .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
2814 };
2815 static struct snl_field_parser fp_get_addrs[] = {};
2816 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, fp_get_addrs, ap_get_addrs);
2817 
2818 int
2819 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2820     uint8_t r_action, const char *anchor, uint32_t *nr)
2821 {
2822 	struct snl_writer nw;
2823 	struct snl_errmsg_data e = {};
2824 	struct nlmsghdr *hdr;
2825 	uint32_t seq_id;
2826 	int family_id;
2827 
2828 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2829 	if (family_id == 0)
2830 		return (ENOTSUP);
2831 
2832 	snl_init_writer(&h->ss, &nw);
2833 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
2834 
2835 	snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2836 	snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2837 	snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2838 	snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2839 
2840 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2841 		return (ENXIO);
2842 
2843 	seq_id = hdr->nlmsg_seq;
2844 
2845 	if (! snl_send_message(&h->ss, hdr))
2846 		return (ENXIO);
2847 
2848 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2849 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
2850 			continue;
2851 	}
2852 
2853 	return (e.error);
2854 }
2855 
2856 #define _OUT(_field)	offsetof(struct pf_pooladdr, _field)
2857 static const struct snl_attr_parser ap_pool_addr[] = {
2858 	{ .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
2859 	{ .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
2860 };
2861 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
2862 #undef _OUT
2863 
2864 #define _OUT(_field)	offsetof(struct pfioc_pooladdr, _field)
2865 static const struct snl_attr_parser ap_get_addr[] = {
2866 	{ .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
2867 	{ .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2868 	{ .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2869 	{ .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
2870 	{ .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
2871 	{ .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
2872 	{ .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
2873 	{ .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
2874 	{ .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
2875 };
2876 static struct snl_field_parser fp_get_addr[] = {};
2877 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, fp_get_addr, ap_get_addr);
2878 #undef _OUT
2879 
2880 int
2881 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2882     uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa)
2883 {
2884 	struct snl_writer nw;
2885 	struct snl_errmsg_data e = {};
2886 	struct nlmsghdr *hdr;
2887 	uint32_t seq_id;
2888 	int family_id;
2889 
2890 	family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2891 	if (family_id == 0)
2892 		return (ENOTSUP);
2893 
2894 	snl_init_writer(&h->ss, &nw);
2895 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
2896 
2897 	snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2898 	snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2899 	snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2900 	snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2901 	snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
2902 
2903 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2904 		return (ENXIO);
2905 
2906 	seq_id = hdr->nlmsg_seq;
2907 
2908 	if (! snl_send_message(&h->ss, hdr))
2909 		return (ENXIO);
2910 
2911 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2912 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
2913 			continue;
2914 	}
2915 
2916 	return (e.error);
2917 }
2918 
2919 #define _OUT(_field)	offsetof(struct pfioc_ruleset, _field)
2920 static const struct snl_attr_parser ap_ruleset[] = {
2921 	{ .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2922 	{ .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
2923 };
2924 static struct snl_field_parser fp_ruleset[] = {};
2925 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, fp_ruleset, ap_ruleset);
2926 #undef _OUT
2927 
2928 int
2929 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
2930 {
2931 	struct snl_writer nw;
2932 	struct snl_errmsg_data e = {};
2933 	struct nlmsghdr *hdr;
2934 	struct pfioc_ruleset rs = {};
2935 	uint32_t seq_id;
2936 	int family_id;
2937 
2938 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2939 	if (family_id == 0)
2940 		return (ENOTSUP);
2941 
2942 	snl_init_writer(&h->ss, &nw);
2943 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
2944 
2945 	snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2946 
2947 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2948 		return (ENXIO);
2949 
2950 	seq_id = hdr->nlmsg_seq;
2951 
2952 	if (! snl_send_message(&h->ss, hdr))
2953 		return (ENXIO);
2954 
2955 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2956 		if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
2957 			continue;
2958 	}
2959 
2960 	*nr = rs.nr;
2961 
2962 	return (e.error);
2963 }
2964 
2965 int
2966 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
2967 {
2968 	struct snl_writer nw;
2969 	struct snl_errmsg_data e = {};
2970 	struct nlmsghdr *hdr;
2971 	uint32_t seq_id;
2972 	int family_id;
2973 
2974 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2975 	if (family_id == 0)
2976 		return (ENOTSUP);
2977 
2978 	snl_init_writer(&h->ss, &nw);
2979 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
2980 
2981 	snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2982 	snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
2983 
2984 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2985 		return (ENXIO);
2986 
2987 	seq_id = hdr->nlmsg_seq;
2988 
2989 	if (! snl_send_message(&h->ss, hdr))
2990 		return (ENXIO);
2991 
2992 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2993 		if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
2994 			continue;
2995 	}
2996 
2997 	return (e.error);
2998 }
2999 
3000 #define	_OUT(_field)	offsetof(struct pfctl_threshold, _field)
3001 static const struct snl_attr_parser ap_pfctl_threshold[] = {
3002 	{ .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3003 	{ .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
3004 	{ .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 },
3005 	{ .type = PF_TH_LAST, .off = _OUT(last), .cb = snl_attr_get_uint32 },
3006 };
3007 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold);
3008 #undef _OUT
3009 
3010 #define	_OUT(_field)	offsetof(struct pfctl_src_node, _field)
3011 static struct snl_attr_parser ap_srcnode[] = {
3012 	{ .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3013 	{ .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3014 	{ .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3015 	{ .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3016 	{ .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3017 	{ .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3018 	{ .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3019 	{ .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3020 	{ .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3021 	{ .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3022 	{ .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3023 	{ .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3024 	{ .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3025 	{ .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3026 };
3027 static struct snl_field_parser fp_srcnode[] = {};
3028 #undef _OUT
3029 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, fp_srcnode, ap_srcnode);
3030 
3031 int
3032 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3033 {
3034 	struct snl_writer nw;
3035 	struct pfctl_src_node sn;
3036 	struct snl_errmsg_data e = {};
3037 	struct nlmsghdr *hdr;
3038 	uint32_t seq_id;
3039 	int family_id;
3040 	int ret;
3041 
3042 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3043 	if (family_id == 0)
3044 		return (ENOTSUP);
3045 
3046 	snl_init_writer(&h->ss, &nw);
3047 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3048 
3049 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
3050 		return (ENXIO);
3051 
3052 	seq_id = hdr->nlmsg_seq;
3053 
3054 	if (!snl_send_message(&h->ss, hdr))
3055 		return (ENXIO);
3056 
3057 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3058 		if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3059 			continue;
3060 
3061 		ret = fn(&sn, arg);
3062 		if (ret != 0)
3063 			return (ret);
3064 	}
3065 
3066 	return (e.error);
3067 }
3068