xref: /freebsd/lib/libpfctl/libpfctl.c (revision b1879975794772ee51f0b4865753364c7d7626c3)
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 	snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf);
1289 
1290 	snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1291 	snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1292 
1293 	snl_end_attr_nested(nw, off);
1294 }
1295 
1296 int
1297 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1298     const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1299 {
1300 	struct pfctl_handle *h;
1301 	int ret;
1302 
1303 	h = pfctl_open(PF_DEVICE);
1304 	if (h == NULL)
1305 		return (ENODEV);
1306 
1307 	ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1308 
1309 	pfctl_close(h);
1310 
1311 	return (ret);
1312 }
1313 
1314 int
1315 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1316 	    const char *anchor, const char *anchor_call, uint32_t ticket,
1317 	    uint32_t pool_ticket)
1318 {
1319 	struct snl_writer nw;
1320 	struct snl_errmsg_data e = {};
1321 	struct nlmsghdr *hdr;
1322 	uint32_t seq_id;
1323 	int family_id;
1324 
1325 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1326 	if (family_id == 0)
1327 		return (ENOTSUP);
1328 
1329 	snl_init_writer(&h->ss, &nw);
1330 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1331 	hdr->nlmsg_flags |= NLM_F_DUMP;
1332 	snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1333 	snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1334 	snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1335 	snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1336 
1337 	snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1338 
1339 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
1340 		return (ENXIO);
1341 
1342 	seq_id = hdr->nlmsg_seq;
1343 
1344 	if (! snl_send_message(&h->ss, hdr))
1345 		return (ENXIO);
1346 
1347 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1348 	}
1349 
1350 	return (e.error);
1351 }
1352 
1353 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1354 #define	_OUT(_field)	offsetof(struct pfctl_rules_info, _field)
1355 static struct snl_attr_parser ap_getrules[] = {
1356 	{ .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1357 	{ .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1358 };
1359 static struct snl_field_parser fp_getrules[] = {
1360 };
1361 #undef _IN
1362 #undef _OUT
1363 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules);
1364 
1365 int
1366 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1367     const char *path)
1368 {
1369 	struct snl_errmsg_data e = {};
1370 	struct nlmsghdr *hdr;
1371 	struct snl_writer nw;
1372 	uint32_t seq_id;
1373 	int family_id;
1374 
1375 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1376 	if (family_id == 0)
1377 		return (ENOTSUP);
1378 
1379 	snl_init_writer(&h->ss, &nw);
1380 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1381 	hdr->nlmsg_flags |= NLM_F_DUMP;
1382 
1383 	snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1384 	snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1385 
1386 	hdr = snl_finalize_msg(&nw);
1387 	if (hdr == NULL)
1388 		return (ENOMEM);
1389 
1390 	seq_id = hdr->nlmsg_seq;
1391 	if (! snl_send_message(&h->ss, hdr))
1392 		return (ENXIO);
1393 
1394 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1395 		if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1396 			continue;
1397 	}
1398 
1399 	return (e.error);
1400 }
1401 
1402 int
1403 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1404     const char *path)
1405 {
1406 	struct pfctl_handle *h;
1407 	int error;
1408 
1409 	h = pfctl_open(PF_DEVICE);
1410 	if (h == NULL)
1411 		return (ENOTSUP);
1412 	error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1413 	pfctl_close(h);
1414 
1415 	return (error);
1416 }
1417 
1418 int
1419 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1420     uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1421 {
1422 	return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1423 	    anchor_call, false));
1424 }
1425 
1426 int
1427 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1428     uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1429 {
1430 	return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1431 	    anchor_call, false));
1432 }
1433 
1434 #define _OUT(_field)	offsetof(struct pf_addr_wrap, _field)
1435 static const struct snl_attr_parser ap_addr_wrap[] = {
1436 	{ .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1437 	{ .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1438 	{ .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1439 	{ .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1440 	{ .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1441 	{ .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1442 	{ .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1443 	{ .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1444 };
1445 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1446 #undef _OUT
1447 
1448 #define _OUT(_field)	offsetof(struct pf_rule_addr, _field)
1449 static struct snl_attr_parser ap_rule_addr[] = {
1450 	{ .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1451 	{ .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1452 	{ .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1453 	{ .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1454 	{ .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1455 };
1456 #undef _OUT
1457 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1458 
1459 struct snl_parsed_labels
1460 {
1461 	char		labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1462 	uint32_t	i;
1463 };
1464 
1465 static bool
1466 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1467     const void *arg __unused, void *target)
1468 {
1469 	struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1470 	bool ret;
1471 
1472 	if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1473 		return (E2BIG);
1474 
1475 	ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1476 	    l->labels[l->i]);
1477 	if (ret)
1478 		l->i++;
1479 
1480 	return (ret);
1481 }
1482 
1483 #define _OUT(_field)	offsetof(struct nl_parsed_labels, _field)
1484 static const struct snl_attr_parser ap_labels[] = {
1485 	{ .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1486 };
1487 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1488 #undef _OUT
1489 
1490 static bool
1491 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1492     const void *arg __unused, void *target)
1493 {
1494 	struct snl_parsed_labels parsed_labels = { };
1495 	bool error;
1496 
1497 	/* Assumes target points to the beginning of the structure */
1498 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1499 	if (! error)
1500 		return (error);
1501 
1502 	memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1503 
1504 	return (true);
1505 }
1506 
1507 #define _OUT(_field)	offsetof(struct pf_mape_portset, _field)
1508 static const struct snl_attr_parser ap_mape_portset[] = {
1509 	{ .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1510 	{ .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1511 	{. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1512 };
1513 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1514 #undef _OUT
1515 
1516 #define _OUT(_field)	offsetof(struct pfctl_pool, _field)
1517 static const struct snl_attr_parser ap_pool[] = {
1518 	{ .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1519 	{ .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1520 	{ .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1521 	{ .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1522 	{ .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1523 	{ .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1524 	{ .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1525 };
1526 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1527 #undef _OUT
1528 
1529 struct nl_parsed_timeouts
1530 {
1531 	uint32_t	timeouts[PFTM_MAX];
1532 	uint32_t	i;
1533 };
1534 
1535 static bool
1536 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1537     const void *arg __unused, void *target)
1538 {
1539 	struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1540 	bool ret;
1541 
1542 	if (t->i >= PFTM_MAX)
1543 		return (E2BIG);
1544 
1545 	ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1546 	if (ret)
1547 		t->i++;
1548 
1549 	return (ret);
1550 }
1551 
1552 #define _OUT(_field)	offsetof(struct nl_parsed_timeout, _field)
1553 static const struct snl_attr_parser ap_timeouts[] = {
1554 	{ .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1555 };
1556 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1557 #undef _OUT
1558 
1559 static bool
1560 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1561     const void *arg __unused, void *target)
1562 {
1563 	struct nl_parsed_timeouts parsed_timeouts = { };
1564 	bool error;
1565 
1566 	/* Assumes target points to the beginning of the structure */
1567 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1568 	if (! error)
1569 		return (error);
1570 
1571 	memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1572 
1573 	return (true);
1574 }
1575 
1576 #define _OUT(_field)	offsetof(struct pf_rule_uid, _field)
1577 static const struct snl_attr_parser ap_rule_uid[] = {
1578 	{ .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1579 	{ .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1580 	{ .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1581 };
1582 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1583 #undef _OUT
1584 
1585 struct pfctl_nl_get_rule {
1586 	struct pfctl_rule r;
1587 	char anchor_call[MAXPATHLEN];
1588 };
1589 #define	_OUT(_field)	offsetof(struct pfctl_nl_get_rule, _field)
1590 static struct snl_attr_parser ap_getrule[] = {
1591 	{ .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1592 	{ .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1593 	{ .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1594 	{ .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1595 	{ .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1596 	{ .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1597 	{ .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1598 	{ .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1599 	{ .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1600 	{ .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1601 	{ .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested },
1602 	{ .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1603 	{ .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1604 	{ .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1605 	{ .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1606 	{ .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1607 	{ .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1608 	{ .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1609 	{ .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1610 	{ .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1611 	{ .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1612 	{ .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1613 	{ .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1614 	{ .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1615 	{ .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1616 	{. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1617 	{ .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1618 	{ .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1619 	{ .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1620 	{ .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1621 	{ .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1622 	{ .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1623 	{ .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1624 	{ .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1625 	{ .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1626 	{ .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1627 	{ .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1628 	{ .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1629 	{ .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1630 	{ .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1631 	{ .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1632 	{ .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1633 	{ .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1634 	{ .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1635 	{ .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1636 	{ .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1637 	{ .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1638 	{ .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1639 	{ .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1640 	{ .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1641 	{ .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1642 	{ .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1643 	{ .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1644 	{ .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1645 	{ .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1646 	{ .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1647 	{ .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1648 	{ .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1649 	{ .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1650 	{ .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1651 	{ .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1652 	{ .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1653 	{ .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1654 	{ .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1655 	{ .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1656 	{ .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1657 	{ .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1658 	{ .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1659 	{ .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1660 	{ .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1661 	{ .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1662 	{ .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1663 	{ .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string },
1664 	{ .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 },
1665 	{ .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested },
1666 	{ .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 },
1667 };
1668 static struct snl_field_parser fp_getrule[] = {};
1669 #undef _OUT
1670 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, ap_getrule);
1671 
1672 int
1673 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1674     const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1675     char *anchor_call, bool clear)
1676 {
1677 	struct pfctl_nl_get_rule attrs = {};
1678 	struct snl_errmsg_data e = {};
1679 	struct nlmsghdr *hdr;
1680 	struct snl_writer nw;
1681 	uint32_t seq_id;
1682 	int family_id;
1683 
1684 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1685 	if (family_id == 0)
1686 		return (ENOTSUP);
1687 
1688 	snl_init_writer(&h->ss, &nw);
1689 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1690 	hdr->nlmsg_flags |= NLM_F_DUMP;
1691 
1692 	snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1693 	snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1694 	snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1695 	snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1696 	snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1697 
1698 	hdr = snl_finalize_msg(&nw);
1699 	if (hdr == NULL)
1700 		return (ENOMEM);
1701 
1702 	seq_id = hdr->nlmsg_seq;
1703 	if (! snl_send_message(&h->ss, hdr))
1704 		return (ENXIO);
1705 
1706 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1707 		if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1708 			continue;
1709 	}
1710 
1711 	memcpy(rule, &attrs.r, sizeof(attrs.r));
1712 	strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1713 
1714 	return (e.error);
1715 }
1716 
1717 int
1718 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1719 	    const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1720 	    char *anchor_call, bool clear)
1721 {
1722 	nvlist_t *nvl;
1723 	int ret;
1724 
1725 	nvl = nvlist_create(0);
1726 	if (nvl == 0)
1727 		return (ENOMEM);
1728 
1729 	nvlist_add_number(nvl, "nr", nr);
1730 	nvlist_add_number(nvl, "ticket", ticket);
1731 	nvlist_add_string(nvl, "anchor", anchor);
1732 	nvlist_add_number(nvl, "ruleset", ruleset);
1733 
1734 	if (clear)
1735 		nvlist_add_bool(nvl, "clear_counter", true);
1736 
1737 	if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1738 		goto out;
1739 
1740 	pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1741 
1742 	if (anchor_call)
1743 		strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1744 		    MAXPATHLEN);
1745 
1746 out:
1747 	nvlist_destroy(nvl);
1748 	return (ret);
1749 }
1750 
1751 int
1752 pfctl_set_keepcounters(int dev, bool keep)
1753 {
1754 	struct pfioc_nv	 nv;
1755 	nvlist_t	*nvl;
1756 	int		 ret;
1757 
1758 	nvl = nvlist_create(0);
1759 
1760 	nvlist_add_bool(nvl, "keep_counters", keep);
1761 
1762 	nv.data = nvlist_pack(nvl, &nv.len);
1763 	nv.size = nv.len;
1764 
1765 	nvlist_destroy(nvl);
1766 
1767 	ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1768 
1769 	free(nv.data);
1770 	return (ret);
1771 }
1772 
1773 struct pfctl_creator {
1774 	uint32_t id;
1775 };
1776 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1777 #define	_OUT(_field)	offsetof(struct pfctl_creator, _field)
1778 static struct snl_attr_parser ap_creators[] = {
1779 	{ .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1780 };
1781 static struct snl_field_parser fp_creators[] = {
1782 };
1783 #undef _IN
1784 #undef _OUT
1785 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators);
1786 
1787 static int
1788 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1789 {
1790 
1791 	int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1792 	size_t i = 0;
1793 
1794 	struct nlmsghdr *hdr;
1795 	struct snl_writer nw;
1796 
1797 	if (family_id == 0)
1798 		return (ENOTSUP);
1799 
1800 	snl_init_writer(ss, &nw);
1801 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1802 	hdr->nlmsg_flags |= NLM_F_DUMP;
1803 	hdr = snl_finalize_msg(&nw);
1804 	if (hdr == NULL)
1805 		return (ENOMEM);
1806 	uint32_t seq_id = hdr->nlmsg_seq;
1807 
1808 	snl_send_message(ss, hdr);
1809 
1810 	struct snl_errmsg_data e = {};
1811 	while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1812 		struct pfctl_creator c;
1813 		bzero(&c, sizeof(c));
1814 
1815 		if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1816 			continue;
1817 
1818 		creators[i] = c.id;
1819 		i++;
1820 		if (i > *len)
1821 			return (E2BIG);
1822 	}
1823 
1824 	*len = i;
1825 
1826 	return (0);
1827 }
1828 
1829 int
1830 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1831 {
1832 	int error;
1833 
1834 	error = pfctl_get_creators_nl(&h->ss, creators, len);
1835 
1836 	return (error);
1837 }
1838 
1839 static inline bool
1840 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1841     const void *arg __unused, void *target)
1842 {
1843 	memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1844 	return (true);
1845 }
1846 
1847 static inline bool
1848 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1849     const void *arg __unused, void *target)
1850 {
1851 	size_t maxlen = NLA_DATA_LEN(nla);
1852 
1853 	if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1854 		strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1855 		return (true);
1856 	}
1857 	return (false);
1858 }
1859 
1860 #define	_OUT(_field)	offsetof(struct pfctl_state_peer, _field)
1861 static const struct snl_attr_parser nla_p_speer[] = {
1862 	{ .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1863 	{ .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1864 	{ .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1865 	{ .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1866 	{ .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1867 };
1868 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1869 #undef _OUT
1870 
1871 #define	_OUT(_field)	offsetof(struct pfctl_state_key, _field)
1872 static const struct snl_attr_parser nla_p_skey[] = {
1873 	{ .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1874 	{ .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1875 	{ .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1876 	{ .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1877 	{ .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
1878 	{ .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 },
1879 };
1880 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1881 #undef _OUT
1882 
1883 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1884 #define	_OUT(_field)	offsetof(struct pfctl_state, _field)
1885 static struct snl_attr_parser ap_state[] = {
1886 	{ .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1887 	{ .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1888 	{ .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1889 	{ .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1890 	{ .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1891 	{ .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1892 	{ .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1893 	{ .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1894 	{ .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1895 	{ .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1896 	{ .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1897 	{ .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1898 	{ .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1899 	{ .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1900 	{ .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1901 	{ .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1902 	{ .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1903 	{ .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1904 	{ .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1905 	{ .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1906 	{ .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1907 	{ .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1908 	{ .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1909 	{ .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1910 	{ .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1911 	{ .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1912 	{ .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1913 	{ .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1914 	{ .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1915 };
1916 static struct snl_field_parser fp_state[] = {
1917 };
1918 #undef _IN
1919 #undef _OUT
1920 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, ap_state);
1921 
1922 static const struct snl_hdr_parser *all_parsers[] = {
1923 	&state_parser, &skey_parser, &speer_parser,
1924 	&creator_parser, &getrules_parser
1925 };
1926 
1927 static int
1928 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1929 {
1930 	SNL_VERIFY_PARSERS(all_parsers);
1931 	int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1932 	int ret;
1933 
1934 	struct nlmsghdr *hdr;
1935 	struct snl_writer nw;
1936 
1937 	if (family_id == 0)
1938 		return (ENOTSUP);
1939 
1940 	snl_init_writer(ss, &nw);
1941 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1942 	hdr->nlmsg_flags |= NLM_F_DUMP;
1943 	snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1944 	snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1945 	snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1946 	snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1947 	snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1948 
1949 	hdr = snl_finalize_msg(&nw);
1950 	if (hdr == NULL)
1951 		return (ENOMEM);
1952 
1953 	uint32_t seq_id = hdr->nlmsg_seq;
1954 
1955 	snl_send_message(ss, hdr);
1956 
1957 	struct snl_errmsg_data e = {};
1958 	while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1959 		struct pfctl_state s;
1960 		bzero(&s, sizeof(s));
1961 		if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1962 			continue;
1963 
1964 		ret = f(&s, arg);
1965 		if (ret != 0)
1966 			return (ret);
1967 	}
1968 
1969 	return (0);
1970 }
1971 
1972 int
1973 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1974 {
1975 	struct pfctl_state_filter filter = {};
1976 	return (pfctl_get_filtered_states_iter(&filter, f, arg));
1977 }
1978 
1979 int
1980 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1981 {
1982 	struct snl_state ss = {};
1983 	int error;
1984 
1985 	snl_init(&ss, NETLINK_GENERIC);
1986 	error = pfctl_get_states_nl(filter, &ss, f, arg);
1987 	snl_free(&ss);
1988 
1989 	return (error);
1990 }
1991 
1992 static int
1993 pfctl_append_states(struct pfctl_state *s, void *arg)
1994 {
1995 	struct pfctl_state *new;
1996 	struct pfctl_states *states = (struct pfctl_states *)arg;
1997 
1998 	new = malloc(sizeof(*s));
1999 	if (new == NULL)
2000 		return (ENOMEM);
2001 
2002 	memcpy(new, s, sizeof(*s));
2003 
2004 	TAILQ_INSERT_TAIL(&states->states, new, entry);
2005 
2006 	return (0);
2007 }
2008 
2009 int
2010 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2011 {
2012 	int ret;
2013 
2014 	bzero(states, sizeof(*states));
2015 	TAILQ_INIT(&states->states);
2016 
2017 	ret = pfctl_get_states_iter(pfctl_append_states, states);
2018 	if (ret != 0) {
2019 		pfctl_free_states(states);
2020 		return (ret);
2021 	}
2022 
2023 	return (0);
2024 }
2025 
2026 void
2027 pfctl_free_states(struct pfctl_states *states)
2028 {
2029 	struct pfctl_state *s, *tmp;
2030 
2031 	TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2032 		free(s);
2033 	}
2034 
2035 	bzero(states, sizeof(*states));
2036 }
2037 
2038 struct pfctl_nl_clear_states {
2039 	uint32_t killed;
2040 };
2041 #define	_OUT(_field)	offsetof(struct pfctl_nl_clear_states, _field)
2042 static struct snl_attr_parser ap_clear_states[] = {
2043 	{ .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2044 };
2045 static struct snl_field_parser fp_clear_states[] = {};
2046 #undef _OUT
2047 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states);
2048 
2049 static int
2050 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2051     unsigned int *killed, int cmd)
2052 {
2053 	struct snl_writer nw;
2054 	struct snl_errmsg_data e = {};
2055 	struct pfctl_nl_clear_states attrs = {};
2056 	struct nlmsghdr *hdr;
2057 	uint32_t seq_id;
2058 	int family_id;
2059 
2060 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2061 	if (family_id == 0)
2062 		return (ENOTSUP);
2063 
2064 	snl_init_writer(&h->ss, &nw);
2065 	hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2066 	hdr->nlmsg_flags |= NLM_F_DUMP;
2067 
2068 	snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2069 	snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2070 	snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2071 	snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2072 	snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2073 	snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2074 	snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2075 	snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2076 	snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2077 	snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2078 	snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2079 	snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2080 
2081 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2082 		return (ENXIO);
2083 
2084 	seq_id = hdr->nlmsg_seq;
2085 
2086 	if (! snl_send_message(&h->ss, hdr))
2087 		return (ENXIO);
2088 
2089 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2090 		if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2091 			continue;
2092 	}
2093 
2094 	if (killed)
2095 		*killed = attrs.killed;
2096 
2097 	return (e.error);
2098 }
2099 
2100 int
2101 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2102     unsigned int *killed)
2103 {
2104 	return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2105 }
2106 
2107 int
2108 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2109     unsigned int *killed)
2110 {
2111 	return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2112 }
2113 
2114 static int
2115 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2116     unsigned int *killed, uint64_t cmd)
2117 {
2118 	struct pfctl_handle *h;
2119 	int ret;
2120 
2121 	h = pfctl_open(PF_DEVICE);
2122 	if (h == NULL)
2123 		return (ENODEV);
2124 
2125 	ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2126 	pfctl_close(h);
2127 
2128 	return (ret);
2129 }
2130 
2131 int
2132 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2133     unsigned int *killed)
2134 {
2135 	return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2136 }
2137 
2138 int
2139 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2140 {
2141 	return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2142 }
2143 
2144 int
2145 pfctl_clear_rules(int dev, const char *anchorname)
2146 {
2147 	struct pfioc_trans trans;
2148 	struct pfioc_trans_e transe[2];
2149 	int ret;
2150 
2151 	bzero(&trans, sizeof(trans));
2152 	bzero(&transe, sizeof(transe));
2153 
2154 	transe[0].rs_num = PF_RULESET_SCRUB;
2155 	if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2156 	    >= sizeof(transe[0].anchor))
2157 		return (E2BIG);
2158 
2159 	transe[1].rs_num = PF_RULESET_FILTER;
2160 	if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2161 	    >= sizeof(transe[1].anchor))
2162 		return (E2BIG);
2163 
2164 	trans.size = 2;
2165 	trans.esize = sizeof(transe[0]);
2166 	trans.array = transe;
2167 
2168 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2169 	if (ret != 0)
2170 		return (errno);
2171 	ret = ioctl(dev, DIOCXCOMMIT, &trans);
2172 	if (ret != 0)
2173 		return (errno);
2174 
2175 	return (0);
2176 }
2177 
2178 int
2179 pfctl_clear_nat(int dev, const char *anchorname)
2180 {
2181 	struct pfioc_trans trans;
2182 	struct pfioc_trans_e transe[3];
2183 	int ret;
2184 
2185 	bzero(&trans, sizeof(trans));
2186 	bzero(&transe, sizeof(transe));
2187 
2188 	transe[0].rs_num = PF_RULESET_NAT;
2189 	if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2190 	    >= sizeof(transe[0].anchor))
2191 		return (E2BIG);
2192 
2193 	transe[1].rs_num = PF_RULESET_BINAT;
2194 	if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2195 	    >= sizeof(transe[0].anchor))
2196 		return (E2BIG);
2197 
2198 	transe[2].rs_num = PF_RULESET_RDR;
2199 	if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2200 	    >= sizeof(transe[2].anchor))
2201 		return (E2BIG);
2202 
2203 	trans.size = 3;
2204 	trans.esize = sizeof(transe[0]);
2205 	trans.array = transe;
2206 
2207 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2208 	if (ret != 0)
2209 		return (errno);
2210 	ret = ioctl(dev, DIOCXCOMMIT, &trans);
2211 	if (ret != 0)
2212 		return (errno);
2213 
2214 	return (0);
2215 }
2216 
2217 int
2218 pfctl_clear_eth_rules(int dev, const char *anchorname)
2219 {
2220 	struct pfioc_trans trans;
2221 	struct pfioc_trans_e transe;
2222 	int ret;
2223 
2224 	bzero(&trans, sizeof(trans));
2225 	bzero(&transe, sizeof(transe));
2226 
2227 	transe.rs_num = PF_RULESET_ETH;
2228 	if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2229 	    >= sizeof(transe.anchor))
2230 		return (E2BIG);
2231 
2232 	trans.size = 1;
2233 	trans.esize = sizeof(transe);
2234 	trans.array = &transe;
2235 
2236 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2237 	if (ret != 0)
2238 		return (errno);
2239 	ret = ioctl(dev, DIOCXCOMMIT, &trans);
2240 	if (ret != 0)
2241 		return (errno);
2242 
2243 	return (0);
2244 }
2245 
2246 static int
2247 _pfctl_get_limit(int dev, const int index, uint *limit)
2248 {
2249 	struct pfioc_limit pl;
2250 
2251 	bzero(&pl, sizeof(pl));
2252 	pl.index = index;
2253 
2254 	if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2255 		return (errno);
2256 
2257 	*limit = pl.limit;
2258 
2259 	return (0);
2260 }
2261 
2262 int
2263 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2264 {
2265 	struct pfioc_nv	 nv;
2266 	nvlist_t	*nvl;
2267 	int		 ret;
2268 	uint		 state_limit;
2269 	uint64_t	 lim, hi, lo;
2270 
2271 	ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2272 	if (ret != 0)
2273 		return (ret);
2274 
2275 	lim = state_limit;
2276 	hi = lim * s->highwater / 100;
2277 	lo = lim * s->lowwater / 100;
2278 
2279 	if (lo == hi)
2280 		hi++;
2281 
2282 	nvl = nvlist_create(0);
2283 
2284 	nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2285 	nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2286 	nvlist_add_number(nvl, "highwater", hi);
2287 	nvlist_add_number(nvl, "lowwater", lo);
2288 
2289 	nv.data = nvlist_pack(nvl, &nv.len);
2290 	nv.size = nv.len;
2291 	nvlist_destroy(nvl);
2292 	nvl = NULL;
2293 
2294 	ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2295 
2296 	free(nv.data);
2297 	if (ret != 0)
2298 		return (errno);
2299 
2300 	return (0);
2301 }
2302 
2303 int
2304 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2305 {
2306 	nvlist_t	*nvl;
2307 	int		 ret;
2308 	uint		 state_limit;
2309 	bool		 enabled, adaptive;
2310 
2311 	ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2312 	if (ret != 0)
2313 		return (ret);
2314 
2315 	bzero(s, sizeof(*s));
2316 
2317 	nvl = nvlist_create(0);
2318 
2319 	if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2320 		ret = errno;
2321 		goto out;
2322 	}
2323 
2324 	enabled = nvlist_get_bool(nvl, "enabled");
2325 	adaptive = nvlist_get_bool(nvl, "adaptive");
2326 
2327 	if (enabled) {
2328 		if (adaptive)
2329 			s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2330 		else
2331 			s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2332 	} else {
2333 		s->mode = PFCTL_SYNCOOKIES_NEVER;
2334 	}
2335 
2336 	s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2337 	s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2338 	s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2339 
2340 out:
2341 	nvlist_destroy(nvl);
2342 	return (ret);
2343 }
2344 
2345 int
2346 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2347     *addr, int size, int *nadd, int flags)
2348 {
2349 	struct pfioc_table io;
2350 
2351 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2352 		return (EINVAL);
2353 	}
2354 	bzero(&io, sizeof io);
2355 	io.pfrio_flags = flags;
2356 	io.pfrio_table = *tbl;
2357 	io.pfrio_buffer = addr;
2358 	io.pfrio_esize = sizeof(*addr);
2359 	io.pfrio_size = size;
2360 
2361 	if (ioctl(dev, DIOCRADDADDRS, &io))
2362 		return (errno);
2363 	if (nadd != NULL)
2364 		*nadd = io.pfrio_nadd;
2365 	return (0);
2366 }
2367 
2368 int
2369 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2370     *addr, int size, int *ndel, int flags)
2371 {
2372 	struct pfioc_table io;
2373 
2374 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2375 		return (EINVAL);
2376 	}
2377 	bzero(&io, sizeof io);
2378 	io.pfrio_flags = flags;
2379 	io.pfrio_table = *tbl;
2380 	io.pfrio_buffer = addr;
2381 	io.pfrio_esize = sizeof(*addr);
2382 	io.pfrio_size = size;
2383 
2384 	if (ioctl(dev, DIOCRDELADDRS, &io))
2385 		return (errno);
2386 	if (ndel != NULL)
2387 		*ndel = io.pfrio_ndel;
2388 	return (0);
2389 }
2390 
2391 int
2392 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2393     *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2394 {
2395 	struct pfioc_table io;
2396 
2397 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2398 		return (EINVAL);
2399 	}
2400 	bzero(&io, sizeof io);
2401 	io.pfrio_flags = flags;
2402 	io.pfrio_table = *tbl;
2403 	io.pfrio_buffer = addr;
2404 	io.pfrio_esize = sizeof(*addr);
2405 	io.pfrio_size = size;
2406 	io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2407 	if (ioctl(dev, DIOCRSETADDRS, &io))
2408 		return (errno);
2409 	if (nadd != NULL)
2410 		*nadd = io.pfrio_nadd;
2411 	if (ndel != NULL)
2412 		*ndel = io.pfrio_ndel;
2413 	if (nchange != NULL)
2414 		*nchange = io.pfrio_nchange;
2415 	if (size2 != NULL)
2416 		*size2 = io.pfrio_size2;
2417 	return (0);
2418 }
2419 
2420 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2421     int *size, int flags)
2422 {
2423 	struct pfioc_table io;
2424 
2425 	if (tbl == NULL || size == NULL || *size < 0 ||
2426 	    (*size && addr == NULL)) {
2427 		return (EINVAL);
2428 	}
2429 	bzero(&io, sizeof io);
2430 	io.pfrio_flags = flags;
2431 	io.pfrio_table = *tbl;
2432 	io.pfrio_buffer = addr;
2433 	io.pfrio_esize = sizeof(*addr);
2434 	io.pfrio_size = *size;
2435 	if (ioctl(dev, DIOCRGETADDRS, &io))
2436 		return (errno);
2437 	*size = io.pfrio_size;
2438 	return (0);
2439 }
2440 
2441 int
2442 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2443 {
2444 	struct snl_writer nw;
2445 	struct snl_errmsg_data e = {};
2446 	struct nlmsghdr *hdr;
2447 	uint32_t seq_id;
2448 	int family_id;
2449 
2450 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2451 	if (family_id == 0)
2452 		return (ENOTSUP);
2453 
2454 	snl_init_writer(&h->ss, &nw);
2455 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2456 
2457 	snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2458 
2459 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2460 		return (ENXIO);
2461 
2462 	seq_id = hdr->nlmsg_seq;
2463 
2464 	if (! snl_send_message(&h->ss, hdr))
2465 		return (ENXIO);
2466 
2467 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2468 	}
2469 
2470 	return (e.error);
2471 }
2472 
2473 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
2474 #define	_OUT(_field)	offsetof(struct pfctl_natlook, _field)
2475 static struct snl_attr_parser ap_natlook[] = {
2476 	{ .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2477 	{ .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2478 	{ .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2479 	{ .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2480 };
2481 static struct snl_field_parser fp_natlook[] = {};
2482 #undef _IN
2483 #undef _OUT
2484 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, fp_natlook, ap_natlook);
2485 
2486 int
2487 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2488     struct pfctl_natlook *r)
2489 {
2490 	struct snl_writer nw;
2491 	struct snl_errmsg_data e = {};
2492 	struct nlmsghdr *hdr;
2493 	uint32_t seq_id;
2494 	int family_id;
2495 
2496 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2497 	if (family_id == 0)
2498 		return (ENOTSUP);
2499 
2500 	snl_init_writer(&h->ss, &nw);
2501 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2502 	hdr->nlmsg_flags |= NLM_F_DUMP;
2503 
2504 	snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2505 	snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2506 	snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2507 	snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2508 	snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2509 	snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2510 	snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2511 
2512 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2513 		return (ENXIO);
2514 
2515 	seq_id = hdr->nlmsg_seq;
2516 
2517 	if (! snl_send_message(&h->ss, hdr))
2518 		return (ENXIO);
2519 
2520 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2521 		if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2522 			continue;
2523 	}
2524 
2525 	return (e.error);
2526 }
2527 
2528 int
2529 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2530 {
2531 	struct snl_writer nw;
2532 	struct snl_errmsg_data e = {};
2533 	struct nlmsghdr *hdr;
2534 	uint32_t seq_id;
2535 	int family_id;
2536 
2537 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2538 	if (family_id == 0)
2539 		return (ENOTSUP);
2540 
2541 	snl_init_writer(&h->ss, &nw);
2542 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2543 
2544 	snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2545 
2546 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2547 		return (ENXIO);
2548 
2549 	seq_id = hdr->nlmsg_seq;
2550 
2551 	if (! snl_send_message(&h->ss, hdr))
2552 		return (ENXIO);
2553 
2554 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2555 	}
2556 
2557 	return (e.error);
2558 }
2559 
2560 int
2561 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2562 {
2563 	struct snl_writer nw;
2564 	struct snl_errmsg_data e = {};
2565 	struct nlmsghdr *hdr;
2566 	uint32_t seq_id;
2567 	int family_id;
2568 
2569 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2570 	if (family_id == 0)
2571 		return (ENOTSUP);
2572 
2573 	snl_init_writer(&h->ss, &nw);
2574 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2575 
2576 	snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2577 	snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2578 
2579 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2580 		return (ENXIO);
2581 
2582 	seq_id = hdr->nlmsg_seq;
2583 
2584 	if (! snl_send_message(&h->ss, hdr))
2585 		return (ENXIO);
2586 
2587 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2588 	}
2589 
2590 	return (e.error);
2591 }
2592 
2593 struct pfctl_nl_timeout {
2594 	uint32_t seconds;
2595 };
2596 #define	_OUT(_field)	offsetof(struct pfctl_nl_timeout, _field)
2597 static struct snl_attr_parser ap_get_timeout[] = {
2598 	{ .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2599 };
2600 static struct snl_field_parser fp_get_timeout[] = {};
2601 #undef _OUT
2602 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, fp_get_timeout, ap_get_timeout);
2603 
2604 int
2605 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2606 {
2607 	struct snl_writer nw;
2608 	struct pfctl_nl_timeout to = {};
2609 	struct snl_errmsg_data e = {};
2610 	struct nlmsghdr *hdr;
2611 	uint32_t seq_id;
2612 	int family_id;
2613 
2614 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2615 	if (family_id == 0)
2616 		return (ENOTSUP);
2617 
2618 	snl_init_writer(&h->ss, &nw);
2619 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
2620 	hdr->nlmsg_flags |= NLM_F_DUMP;
2621 
2622 	snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2623 
2624 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2625 		return (ENXIO);
2626 
2627 	seq_id = hdr->nlmsg_seq;
2628 
2629 	if (! snl_send_message(&h->ss, hdr))
2630 		return (ENXIO);
2631 
2632 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2633 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
2634 			continue;
2635 	}
2636 
2637 	if (seconds != NULL)
2638 		*seconds = to.seconds;
2639 
2640 	return (e.error);
2641 }
2642 
2643 int
2644 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
2645 {
2646 	struct snl_writer nw;
2647 	struct snl_errmsg_data e = {};
2648 	struct nlmsghdr *hdr;
2649 	uint32_t seq_id;
2650 	int family_id;
2651 
2652 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2653 	if (family_id == 0)
2654 		return (ENOTSUP);
2655 
2656 	snl_init_writer(&h->ss, &nw);
2657 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
2658 
2659 	snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2660 	snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
2661 
2662 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2663 		return (ENXIO);
2664 
2665 	seq_id = hdr->nlmsg_seq;
2666 
2667 	if (! snl_send_message(&h->ss, hdr))
2668 		return (ENXIO);
2669 
2670 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2671 	}
2672 
2673 	return (e.error);
2674 }
2675 
2676 struct pfctl_nl_limit {
2677 	unsigned int limit;
2678 };
2679 #define	_OUT(_field)	offsetof(struct pfctl_nl_limit, _field)
2680 static struct snl_attr_parser ap_get_limit[] = {
2681 	{ .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2682 };
2683 static struct snl_field_parser fp_get_limit[] = {};
2684 #undef _OUT
2685 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, fp_get_limit, ap_get_limit);
2686 
2687 int
2688 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
2689 {
2690 	struct snl_writer nw;
2691 	struct pfctl_nl_limit li = {};
2692 	struct snl_errmsg_data e = {};
2693 	struct nlmsghdr *hdr;
2694 	uint32_t seq_id;
2695 	int family_id;
2696 
2697 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2698 	if (family_id == 0)
2699 		return (ENOTSUP);
2700 
2701 	snl_init_writer(&h->ss, &nw);
2702 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
2703 	hdr->nlmsg_flags |= NLM_F_DUMP;
2704 
2705 	snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2706 
2707 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2708 		return (ENXIO);
2709 
2710 	seq_id = hdr->nlmsg_seq;
2711 
2712 	if (! snl_send_message(&h->ss, hdr))
2713 		return (ENXIO);
2714 
2715 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2716 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
2717 			continue;
2718 	}
2719 
2720 	if (limit != NULL)
2721 		*limit = li.limit;
2722 
2723 	return (e.error);
2724 }
2725 
2726 struct pfctl_nl_begin_addrs {
2727 	uint32_t ticket;
2728 };
2729 #define	_OUT(_field)	offsetof(struct pfctl_nl_begin_addrs, _field)
2730 static struct snl_attr_parser ap_begin_addrs[] = {
2731 	{ .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2732 };
2733 static struct snl_field_parser fp_begin_addrs[] = {};
2734 #undef _OUT
2735 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, fp_begin_addrs, ap_begin_addrs);
2736 
2737 int
2738 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
2739 {
2740 	struct snl_writer nw;
2741 	struct pfctl_nl_begin_addrs attrs = {};
2742 	struct snl_errmsg_data e = {};
2743 	struct nlmsghdr *hdr;
2744 	uint32_t seq_id;
2745 	int family_id;
2746 
2747 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2748 	if (family_id == 0)
2749 		return (ENOTSUP);
2750 
2751 	snl_init_writer(&h->ss, &nw);
2752 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
2753 	hdr->nlmsg_flags |= NLM_F_DUMP;
2754 
2755 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2756 		return (ENXIO);
2757 
2758 	seq_id = hdr->nlmsg_seq;
2759 
2760 	if (! snl_send_message(&h->ss, hdr))
2761 		return (ENXIO);
2762 
2763 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2764 		if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
2765 			continue;
2766 	}
2767 
2768 	if (ticket != NULL)
2769 		*ticket = attrs.ticket;
2770 
2771 	return (e.error);
2772 }
2773 
2774 int
2775 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which)
2776 {
2777 	struct snl_writer nw;
2778 	struct snl_errmsg_data e = {};
2779 	struct nlmsghdr *hdr;
2780 	uint32_t seq_id;
2781 	int family_id;
2782 
2783 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2784 	if (family_id == 0)
2785 		return (ENOTSUP);
2786 
2787 	snl_init_writer(&h->ss, &nw);
2788 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
2789 
2790 	snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
2791 	snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
2792 	snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
2793 	snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
2794 	snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
2795 	snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
2796 	snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
2797 	snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
2798 	snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
2799 	snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2800 
2801 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2802 		return (ENXIO);
2803 
2804 	seq_id = hdr->nlmsg_seq;
2805 
2806 	if (! snl_send_message(&h->ss, hdr))
2807 		return (ENXIO);
2808 
2809 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2810 	}
2811 
2812 	return (e.error);
2813 }
2814 
2815 static const struct snl_attr_parser ap_get_addrs[] = {
2816 	{ .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
2817 };
2818 static struct snl_field_parser fp_get_addrs[] = {};
2819 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, fp_get_addrs, ap_get_addrs);
2820 
2821 int
2822 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2823     uint8_t r_action, const char *anchor, uint32_t *nr, int which)
2824 {
2825 	struct snl_writer nw;
2826 	struct snl_errmsg_data e = {};
2827 	struct nlmsghdr *hdr;
2828 	uint32_t seq_id;
2829 	int family_id;
2830 
2831 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2832 	if (family_id == 0)
2833 		return (ENOTSUP);
2834 
2835 	snl_init_writer(&h->ss, &nw);
2836 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
2837 
2838 	snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2839 	snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2840 	snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2841 	snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2842 	snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2843 
2844 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2845 		return (ENXIO);
2846 
2847 	seq_id = hdr->nlmsg_seq;
2848 
2849 	if (! snl_send_message(&h->ss, hdr))
2850 		return (ENXIO);
2851 
2852 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2853 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
2854 			continue;
2855 	}
2856 
2857 	return (e.error);
2858 }
2859 
2860 #define _OUT(_field)	offsetof(struct pf_pooladdr, _field)
2861 static const struct snl_attr_parser ap_pool_addr[] = {
2862 	{ .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
2863 	{ .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
2864 };
2865 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
2866 #undef _OUT
2867 
2868 #define _OUT(_field)	offsetof(struct pfioc_pooladdr, _field)
2869 static const struct snl_attr_parser ap_get_addr[] = {
2870 	{ .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
2871 	{ .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2872 	{ .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2873 	{ .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
2874 	{ .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
2875 	{ .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
2876 	{ .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
2877 	{ .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
2878 	{ .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
2879 };
2880 static struct snl_field_parser fp_get_addr[] = {};
2881 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, fp_get_addr, ap_get_addr);
2882 #undef _OUT
2883 
2884 int
2885 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2886     uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa,
2887     int which)
2888 {
2889 	struct snl_writer nw;
2890 	struct snl_errmsg_data e = {};
2891 	struct nlmsghdr *hdr;
2892 	uint32_t seq_id;
2893 	int family_id;
2894 
2895 	family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2896 	if (family_id == 0)
2897 		return (ENOTSUP);
2898 
2899 	snl_init_writer(&h->ss, &nw);
2900 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
2901 
2902 	snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2903 	snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2904 	snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2905 	snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2906 	snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
2907 	snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2908 
2909 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2910 		return (ENXIO);
2911 
2912 	seq_id = hdr->nlmsg_seq;
2913 
2914 	if (! snl_send_message(&h->ss, hdr))
2915 		return (ENXIO);
2916 
2917 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2918 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
2919 			continue;
2920 	}
2921 
2922 	return (e.error);
2923 }
2924 
2925 #define _OUT(_field)	offsetof(struct pfioc_ruleset, _field)
2926 static const struct snl_attr_parser ap_ruleset[] = {
2927 	{ .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2928 	{ .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
2929 };
2930 static struct snl_field_parser fp_ruleset[] = {};
2931 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, fp_ruleset, ap_ruleset);
2932 #undef _OUT
2933 
2934 int
2935 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
2936 {
2937 	struct snl_writer nw;
2938 	struct snl_errmsg_data e = {};
2939 	struct nlmsghdr *hdr;
2940 	struct pfioc_ruleset rs = {};
2941 	uint32_t seq_id;
2942 	int family_id;
2943 
2944 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2945 	if (family_id == 0)
2946 		return (ENOTSUP);
2947 
2948 	snl_init_writer(&h->ss, &nw);
2949 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
2950 
2951 	snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2952 
2953 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2954 		return (ENXIO);
2955 
2956 	seq_id = hdr->nlmsg_seq;
2957 
2958 	if (! snl_send_message(&h->ss, hdr))
2959 		return (ENXIO);
2960 
2961 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2962 		if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
2963 			continue;
2964 	}
2965 
2966 	*nr = rs.nr;
2967 
2968 	return (e.error);
2969 }
2970 
2971 int
2972 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
2973 {
2974 	struct snl_writer nw;
2975 	struct snl_errmsg_data e = {};
2976 	struct nlmsghdr *hdr;
2977 	uint32_t seq_id;
2978 	int family_id;
2979 
2980 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2981 	if (family_id == 0)
2982 		return (ENOTSUP);
2983 
2984 	snl_init_writer(&h->ss, &nw);
2985 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
2986 
2987 	snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2988 	snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
2989 
2990 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2991 		return (ENXIO);
2992 
2993 	seq_id = hdr->nlmsg_seq;
2994 
2995 	if (! snl_send_message(&h->ss, hdr))
2996 		return (ENXIO);
2997 
2998 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2999 		if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
3000 			continue;
3001 	}
3002 
3003 	return (e.error);
3004 }
3005 
3006 #define	_OUT(_field)	offsetof(struct pfctl_threshold, _field)
3007 static const struct snl_attr_parser ap_pfctl_threshold[] = {
3008 	{ .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
3009 	{ .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
3010 	{ .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 },
3011 	{ .type = PF_TH_LAST, .off = _OUT(last), .cb = snl_attr_get_uint32 },
3012 };
3013 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold);
3014 #undef _OUT
3015 
3016 #define	_OUT(_field)	offsetof(struct pfctl_src_node, _field)
3017 static struct snl_attr_parser ap_srcnode[] = {
3018 	{ .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3019 	{ .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3020 	{ .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3021 	{ .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3022 	{ .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3023 	{ .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3024 	{ .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3025 	{ .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3026 	{ .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3027 	{ .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3028 	{ .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3029 	{ .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3030 	{ .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3031 	{ .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3032 	{ .type = PF_SN_NAF, .off = _OUT(naf), .cb = snl_attr_get_uint8 },
3033 };
3034 static struct snl_field_parser fp_srcnode[] = {};
3035 #undef _OUT
3036 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, fp_srcnode, ap_srcnode);
3037 
3038 int
3039 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3040 {
3041 	struct snl_writer nw;
3042 	struct pfctl_src_node sn;
3043 	struct snl_errmsg_data e = {};
3044 	struct nlmsghdr *hdr;
3045 	uint32_t seq_id;
3046 	int family_id;
3047 	int ret;
3048 
3049 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3050 	if (family_id == 0)
3051 		return (ENOTSUP);
3052 
3053 	snl_init_writer(&h->ss, &nw);
3054 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3055 
3056 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
3057 		return (ENXIO);
3058 
3059 	seq_id = hdr->nlmsg_seq;
3060 
3061 	if (!snl_send_message(&h->ss, hdr))
3062 		return (ENXIO);
3063 
3064 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3065 		if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3066 			continue;
3067 
3068 		ret = fn(&sn, arg);
3069 		if (ret != 0)
3070 			return (ret);
3071 	}
3072 
3073 	return (e.error);
3074 }
3075