xref: /freebsd/lib/libpfctl/libpfctl.c (revision 7c882c69a4f077efc2602da303c192363fe478d0)
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 SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, snl_f_p_empty, ap_getstatus);
396 #undef _OUT
397 
398 struct pfctl_status *
399 pfctl_get_status_h(struct pfctl_handle *h __unused)
400 {
401 	struct pfctl_status	*status;
402 	struct snl_errmsg_data e = {};
403 	struct nlmsghdr *hdr;
404 	struct snl_writer nw;
405 	uint32_t seq_id;
406 	int family_id;
407 
408 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
409 	if (family_id == 0)
410 		return (NULL);
411 
412 	snl_init_writer(&h->ss, &nw);
413 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS);
414 	hdr->nlmsg_flags |= NLM_F_DUMP;
415 
416 	hdr = snl_finalize_msg(&nw);
417 	if (hdr == NULL) {
418 		return (NULL);
419 	}
420 
421 	seq_id = hdr->nlmsg_seq;
422 	if (! snl_send_message(&h->ss, hdr))
423 		return (NULL);
424 
425 	status = calloc(1, sizeof(*status));
426 	if (status == NULL)
427 		return (NULL);
428 	TAILQ_INIT(&status->counters);
429 	TAILQ_INIT(&status->lcounters);
430 	TAILQ_INIT(&status->fcounters);
431 	TAILQ_INIT(&status->scounters);
432 
433 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
434 		if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status))
435 			continue;
436 	}
437 
438 	return (status);
439 }
440 
441 struct pfctl_status *
442 pfctl_get_status(int dev)
443 {
444 	struct pfctl_status	*status;
445 	nvlist_t	*nvl;
446 	size_t		 len;
447 	const void	*chksum;
448 
449 	status = calloc(1, sizeof(*status));
450 	if (status == NULL)
451 		return (NULL);
452 
453 	nvl = nvlist_create(0);
454 
455 	if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) {
456 		nvlist_destroy(nvl);
457 		free(status);
458 		return (NULL);
459 	}
460 
461 	status->running = nvlist_get_bool(nvl, "running");
462 	status->since = nvlist_get_number(nvl, "since");
463 	status->debug = nvlist_get_number(nvl, "debug");
464 	status->hostid = ntohl(nvlist_get_number(nvl, "hostid"));
465 	status->states = nvlist_get_number(nvl, "states");
466 	status->src_nodes = nvlist_get_number(nvl, "src_nodes");
467 	status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active");
468 	status->reass = nvlist_get_number(nvl, "reass");
469 
470 	strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"),
471 	    IFNAMSIZ);
472 	chksum = nvlist_get_binary(nvl, "chksum", &len);
473 	assert(len == PF_MD5_DIGEST_LENGTH);
474 	memcpy(status->pf_chksum, chksum, len);
475 
476 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"),
477 	    &status->counters);
478 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"),
479 	    &status->lcounters);
480 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"),
481 	    &status->fcounters);
482 	_pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"),
483 	    &status->scounters);
484 
485 	pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2,
486 	    (uint64_t *)status->pcounters, NULL);
487 	pf_nvuint_64_array(nvl, "bcounters", 2 * 2,
488 	    (uint64_t *)status->bcounters, NULL);
489 
490 	nvlist_destroy(nvl);
491 
492 	return (status);
493 }
494 int
495 pfctl_clear_status(struct pfctl_handle *h)
496 {
497 	return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS));
498 }
499 
500 static uint64_t
501 _pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id)
502 {
503 	struct pfctl_status_counter *c;
504 
505 	TAILQ_FOREACH(c, counters, entry) {
506 		if (c->id == id)
507 			return (c->counter);
508 	}
509 
510 	return (0);
511 }
512 
513 uint64_t
514 pfctl_status_counter(struct pfctl_status *status, int id)
515 {
516 	return (_pfctl_status_counter(&status->counters, id));
517 }
518 
519 uint64_t
520 pfctl_status_lcounter(struct pfctl_status *status, int id)
521 {
522 	return (_pfctl_status_counter(&status->lcounters, id));
523 }
524 
525 uint64_t
526 pfctl_status_fcounter(struct pfctl_status *status, int id)
527 {
528 	return (_pfctl_status_counter(&status->fcounters, id));
529 }
530 
531 uint64_t
532 pfctl_status_scounter(struct pfctl_status *status, int id)
533 {
534 	return (_pfctl_status_counter(&status->scounters, id));
535 }
536 
537 void
538 pfctl_free_status(struct pfctl_status *status)
539 {
540 	struct pfctl_status_counter *c, *tmp;
541 
542 	if (status == NULL)
543 		return;
544 
545 	TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) {
546 		free(c->name);
547 		free(c);
548 	}
549 	TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) {
550 		free(c->name);
551 		free(c);
552 	}
553 	TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) {
554 		free(c->name);
555 		free(c);
556 	}
557 	TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) {
558 		free(c->name);
559 		free(c);
560 	}
561 
562 	free(status);
563 }
564 
565 static void
566 pfctl_nv_add_addr(nvlist_t *nvparent, const char *name,
567     const struct pf_addr *addr)
568 {
569 	nvlist_t *nvl = nvlist_create(0);
570 
571 	nvlist_add_binary(nvl, "addr", addr, sizeof(*addr));
572 
573 	nvlist_add_nvlist(nvparent, name, nvl);
574 	nvlist_destroy(nvl);
575 }
576 
577 static void
578 pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr)
579 {
580 	size_t len;
581 	const void *data;
582 
583 	data = nvlist_get_binary(nvl, "addr", &len);
584 	assert(len == sizeof(struct pf_addr));
585 	memcpy(addr, data, len);
586 }
587 
588 static void
589 pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name,
590     const struct pf_addr_wrap *addr)
591 {
592 	nvlist_t *nvl = nvlist_create(0);
593 
594 	nvlist_add_number(nvl, "type", addr->type);
595 	nvlist_add_number(nvl, "iflags", addr->iflags);
596 	if (addr->type == PF_ADDR_DYNIFTL)
597 		nvlist_add_string(nvl, "ifname", addr->v.ifname);
598 	if (addr->type == PF_ADDR_TABLE)
599 		nvlist_add_string(nvl, "tblname", addr->v.tblname);
600 	pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr);
601 	pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask);
602 
603 	nvlist_add_nvlist(nvparent, name, nvl);
604 	nvlist_destroy(nvl);
605 }
606 
607 static void
608 pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr)
609 {
610 	bzero(addr, sizeof(*addr));
611 
612 	addr->type = nvlist_get_number(nvl, "type");
613 	addr->iflags = nvlist_get_number(nvl, "iflags");
614 	if (addr->type == PF_ADDR_DYNIFTL) {
615 		strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"),
616 		    IFNAMSIZ);
617 		addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt");
618 	}
619 	if (addr->type == PF_ADDR_TABLE) {
620 		strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"),
621 		    PF_TABLE_NAME_SIZE);
622 		addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt");
623 	}
624 
625 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr);
626 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask);
627 }
628 
629 static void
630 pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name,
631     const struct pf_rule_addr *addr)
632 {
633 	uint64_t ports[2];
634 	nvlist_t *nvl = nvlist_create(0);
635 
636 	pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr);
637 	ports[0] = addr->port[0];
638 	ports[1] = addr->port[1];
639 	nvlist_add_number_array(nvl, "port", ports, 2);
640 	nvlist_add_number(nvl, "neg", addr->neg);
641 	nvlist_add_number(nvl, "port_op", addr->port_op);
642 
643 	nvlist_add_nvlist(nvparent, name, nvl);
644 	nvlist_destroy(nvl);
645 }
646 
647 static void
648 pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr)
649 {
650 	pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr);
651 
652 	pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL);
653 	addr->neg = nvlist_get_number(nvl, "neg");
654 	addr->port_op = nvlist_get_number(nvl, "port_op");
655 }
656 
657 static void
658 pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape)
659 {
660 	mape->offset = nvlist_get_number(nvl, "offset");
661 	mape->psidlen = nvlist_get_number(nvl, "psidlen");
662 	mape->psid = nvlist_get_number(nvl, "psid");
663 }
664 
665 static void
666 pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool)
667 {
668 	size_t len;
669 	const void *data;
670 
671 	data = nvlist_get_binary(nvl, "key", &len);
672 	assert(len == sizeof(pool->key));
673 	memcpy(&pool->key, data, len);
674 
675 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter);
676 
677 	pool->tblidx = nvlist_get_number(nvl, "tblidx");
678 	pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL);
679 	pool->opts = nvlist_get_number(nvl, "opts");
680 
681 	if (nvlist_exists_nvlist(nvl, "mape"))
682 		pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape);
683 }
684 
685 static void
686 pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid)
687 {
688 	pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL);
689 	uid->op = nvlist_get_number(nvl, "op");
690 }
691 
692 static void
693 pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule)
694 {
695 	pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr);
696 	rule->divert.port = nvlist_get_number(nvl, "port");
697 }
698 
699 static void
700 pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule)
701 {
702 	const uint64_t *skip;
703 	const char *const *labels;
704 	size_t skipcount, labelcount;
705 
706 	rule->nr = nvlist_get_number(nvl, "nr");
707 
708 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src);
709 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst);
710 
711 	skip = nvlist_get_number_array(nvl, "skip", &skipcount);
712 	assert(skip);
713 	assert(skipcount == PF_SKIP_COUNT);
714 	for (int i = 0; i < PF_SKIP_COUNT; i++)
715 		rule->skip[i].nr = skip[i];
716 
717 	labels = nvlist_get_string_array(nvl, "labels", &labelcount);
718 	assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
719 	for (size_t i = 0; i < labelcount; i++)
720 		strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
721 	rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
722 	strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
723 	strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
724 	strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE);
725 	strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
726 	    PF_TAG_NAME_SIZE);
727 	strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
728 	    PF_TAG_NAME_SIZE);
729 
730 	strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"),
731 	    PF_TABLE_NAME_SIZE);
732 
733 	pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr);
734 
735 	rule->evaluations = nvlist_get_number(nvl, "evaluations");
736 	pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL);
737 	pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL);
738 
739 	if (nvlist_exists_number(nvl, "timestamp")) {
740 		rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
741 	}
742 
743 	rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint");
744 
745 	rule->rtableid = nvlist_get_number(nvl, "rtableid");
746 	pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL);
747 	rule->max_states = nvlist_get_number(nvl, "max_states");
748 	rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes");
749 	rule->max_src_states = nvlist_get_number(nvl, "max_src_states");
750 	rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn");
751 	rule->max_src_conn_rate.limit =
752 	    nvlist_get_number(nvl, "max_src_conn_rate.limit");
753 	rule->max_src_conn_rate.seconds =
754 	    nvlist_get_number(nvl, "max_src_conn_rate.seconds");
755 	rule->qid = nvlist_get_number(nvl, "qid");
756 	rule->pqid = nvlist_get_number(nvl, "pqid");
757 	rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
758 	rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe");
759 	rule->free_flags = nvlist_get_number(nvl, "dnflags");
760 	rule->prob = nvlist_get_number(nvl, "prob");
761 	rule->cuid = nvlist_get_number(nvl, "cuid");
762 	rule->cpid = nvlist_get_number(nvl, "cpid");
763 
764 	rule->return_icmp = nvlist_get_number(nvl, "return_icmp");
765 	rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6");
766 	rule->max_mss = nvlist_get_number(nvl, "max_mss");
767 	rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags");
768 
769 	pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid);
770 	pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"),
771 	    (struct pf_rule_uid *)&rule->gid);
772 
773 	rule->rule_flag = nvlist_get_number(nvl, "rule_flag");
774 	rule->action = nvlist_get_number(nvl, "action");
775 	rule->direction = nvlist_get_number(nvl, "direction");
776 	rule->log = nvlist_get_number(nvl, "log");
777 	rule->logif = nvlist_get_number(nvl, "logif");
778 	rule->quick = nvlist_get_number(nvl, "quick");
779 	rule->ifnot = nvlist_get_number(nvl, "ifnot");
780 	rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not");
781 	rule->natpass = nvlist_get_number(nvl, "natpass");
782 
783 	rule->keep_state = nvlist_get_number(nvl, "keep_state");
784 	rule->af = nvlist_get_number(nvl, "af");
785 	rule->proto = nvlist_get_number(nvl, "proto");
786 	rule->type = nvlist_get_number(nvl, "type");
787 	rule->code = nvlist_get_number(nvl, "code");
788 	rule->flags = nvlist_get_number(nvl, "flags");
789 	rule->flagset = nvlist_get_number(nvl, "flagset");
790 	rule->min_ttl = nvlist_get_number(nvl, "min_ttl");
791 	rule->allow_opts = nvlist_get_number(nvl, "allow_opts");
792 	rule->rt = nvlist_get_number(nvl, "rt");
793 	rule->return_ttl  = nvlist_get_number(nvl, "return_ttl");
794 	rule->tos = nvlist_get_number(nvl, "tos");
795 	rule->set_tos = nvlist_get_number(nvl, "set_tos");
796 	rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
797 	rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
798 
799 	rule->flush = nvlist_get_number(nvl, "flush");
800 	rule->prio = nvlist_get_number(nvl, "prio");
801 	pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL);
802 
803 	pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule);
804 
805 	rule->states_cur = nvlist_get_number(nvl, "states_cur");
806 	rule->states_tot = nvlist_get_number(nvl, "states_tot");
807 	rule->src_nodes = nvlist_get_number(nvl, "src_nodes");
808 }
809 
810 static void
811 pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr)
812 {
813 	static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 };
814 	size_t len;
815 	const void *data;
816 
817 	data = nvlist_get_binary(nvl, "addr", &len);
818 	assert(len == sizeof(addr->addr));
819 	memcpy(addr->addr, data, sizeof(addr->addr));
820 
821 	data = nvlist_get_binary(nvl, "mask", &len);
822 	assert(len == sizeof(addr->mask));
823 	memcpy(addr->mask, data, sizeof(addr->mask));
824 
825 	addr->neg = nvlist_get_bool(nvl, "neg");
826 
827 	/* To make checks for 'is this address set?' easier. */
828 	addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0;
829 }
830 
831 static nvlist_t *
832 pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr)
833 {
834 	nvlist_t *nvl;
835 
836 	nvl = nvlist_create(0);
837 	if (nvl == NULL)
838 		return (NULL);
839 
840 	nvlist_add_bool(nvl, "neg", addr->neg);
841 	nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN);
842 	nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN);
843 
844 	return (nvl);
845 }
846 
847 static void
848 pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule)
849 {
850 	const char *const *labels;
851 	size_t labelcount, i;
852 
853 	rule->nr = nvlist_get_number(nvl, "nr");
854 	rule->quick = nvlist_get_bool(nvl, "quick");
855 	strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ);
856 	rule->ifnot = nvlist_get_bool(nvl, "ifnot");
857 	rule->direction = nvlist_get_number(nvl, "direction");
858 	rule->proto = nvlist_get_number(nvl, "proto");
859 	strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"),
860 	    PF_TAG_NAME_SIZE);
861 	rule->match_tag = nvlist_get_number(nvl, "match_tag");
862 	rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not");
863 
864 	labels = nvlist_get_string_array(nvl, "labels", &labelcount);
865 	assert(labelcount <= PF_RULE_MAX_LABEL_COUNT);
866 	for (i = 0; i < labelcount; i++)
867 		strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE);
868 	rule->ridentifier = nvlist_get_number(nvl, "ridentifier");
869 
870 	pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"),
871 	    &rule->src);
872 	pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"),
873 	    &rule->dst);
874 
875 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"),
876 	    &rule->ipsrc);
877 	pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"),
878 	    &rule->ipdst);
879 
880 	rule->evaluations = nvlist_get_number(nvl, "evaluations");
881 	rule->packets[0] = nvlist_get_number(nvl, "packets-in");
882 	rule->packets[1] = nvlist_get_number(nvl, "packets-out");
883 	rule->bytes[0] = nvlist_get_number(nvl, "bytes-in");
884 	rule->bytes[1] = nvlist_get_number(nvl, "bytes-out");
885 
886 	if (nvlist_exists_number(nvl, "timestamp")) {
887 		rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp");
888 	}
889 
890 	strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE);
891 	strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"),
892 	    PF_TAG_NAME_SIZE);
893 
894 	rule->dnpipe = nvlist_get_number(nvl, "dnpipe");
895 	rule->dnflags = nvlist_get_number(nvl, "dnflags");
896 
897 	rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative");
898 	rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard");
899 
900 	strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"),
901 	    IFNAMSIZ);
902 
903 	rule->action = nvlist_get_number(nvl, "action");
904 }
905 
906 int
907 pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri,
908     const char *path)
909 {
910 	nvlist_t *nvl;
911 	int ret;
912 
913 	bzero(ri, sizeof(*ri));
914 
915 	nvl = nvlist_create(0);
916 	nvlist_add_string(nvl, "path", path);
917 
918 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0)
919 		goto out;
920 
921 	ri->nr = nvlist_get_number(nvl, "nr");
922 
923 out:
924 	nvlist_destroy(nvl);
925 	return (ret);
926 }
927 
928 int
929 pfctl_get_eth_ruleset(int dev, const char *path, int nr,
930     struct pfctl_eth_ruleset_info *ri)
931 {
932 	nvlist_t *nvl;
933 	int ret;
934 
935 	bzero(ri, sizeof(*ri));
936 
937 	nvl = nvlist_create(0);
938 	nvlist_add_string(nvl, "path", path);
939 	nvlist_add_number(nvl, "nr", nr);
940 
941 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0)
942 		goto out;
943 
944 	ri->nr = nvlist_get_number(nvl, "nr");
945 	strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN);
946 	strlcpy(ri->name, nvlist_get_string(nvl, "name"),
947 	    PF_ANCHOR_NAME_SIZE);
948 
949 out:
950 	nvlist_destroy(nvl);
951 	return (ret);
952 }
953 
954 int
955 pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules,
956     const char *path)
957 {
958 	nvlist_t *nvl;
959 	int ret;
960 
961 	bzero(rules, sizeof(*rules));
962 
963 	nvl = nvlist_create(0);
964 	nvlist_add_string(nvl, "anchor", path);
965 
966 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0)
967 		goto out;
968 
969 	rules->nr = nvlist_get_number(nvl, "nr");
970 	rules->ticket = nvlist_get_number(nvl, "ticket");
971 
972 out:
973 	nvlist_destroy(nvl);
974 	return (ret);
975 }
976 
977 int
978 pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket,
979     const char *path, struct pfctl_eth_rule *rule, bool clear,
980     char *anchor_call)
981 {
982 	nvlist_t *nvl;
983 	int ret;
984 
985 	nvl = nvlist_create(0);
986 
987 	nvlist_add_string(nvl, "anchor", path);
988 	nvlist_add_number(nvl, "ticket", ticket);
989 	nvlist_add_number(nvl, "nr", nr);
990 	nvlist_add_bool(nvl, "clear", clear);
991 
992 	if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0)
993 		goto out;
994 
995 	pfctl_nveth_rule_to_eth_rule(nvl, rule);
996 
997 	if (anchor_call)
998 		strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
999 		    MAXPATHLEN);
1000 
1001 out:
1002 	nvlist_destroy(nvl);
1003 	return (ret);
1004 }
1005 
1006 int
1007 pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor,
1008     const char *anchor_call, uint32_t ticket)
1009 {
1010 	struct pfioc_nv nv;
1011 	nvlist_t *nvl, *addr;
1012 	void *packed;
1013 	int error = 0;
1014 	size_t labelcount, size;
1015 
1016 	nvl = nvlist_create(0);
1017 
1018 	nvlist_add_number(nvl, "ticket", ticket);
1019 	nvlist_add_string(nvl, "anchor", anchor);
1020 	nvlist_add_string(nvl, "anchor_call", anchor_call);
1021 
1022 	nvlist_add_number(nvl, "nr", r->nr);
1023 	nvlist_add_bool(nvl, "quick", r->quick);
1024 	nvlist_add_string(nvl, "ifname", r->ifname);
1025 	nvlist_add_bool(nvl, "ifnot", r->ifnot);
1026 	nvlist_add_number(nvl, "direction", r->direction);
1027 	nvlist_add_number(nvl, "proto", r->proto);
1028 	nvlist_add_string(nvl, "match_tagname", r->match_tagname);
1029 	nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not);
1030 
1031 	addr = pfctl_eth_addr_to_nveth_addr(&r->src);
1032 	if (addr == NULL) {
1033 		nvlist_destroy(nvl);
1034 		return (ENOMEM);
1035 	}
1036 	nvlist_add_nvlist(nvl, "src", addr);
1037 	nvlist_destroy(addr);
1038 
1039 	addr = pfctl_eth_addr_to_nveth_addr(&r->dst);
1040 	if (addr == NULL) {
1041 		nvlist_destroy(nvl);
1042 		return (ENOMEM);
1043 	}
1044 	nvlist_add_nvlist(nvl, "dst", addr);
1045 	nvlist_destroy(addr);
1046 
1047 	pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc);
1048 	pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst);
1049 
1050 	labelcount = 0;
1051 	while (labelcount < PF_RULE_MAX_LABEL_COUNT &&
1052 	    r->label[labelcount][0] != 0) {
1053 		nvlist_append_string_array(nvl, "labels",
1054 		    r->label[labelcount]);
1055 		labelcount++;
1056 	}
1057 	nvlist_add_number(nvl, "ridentifier", r->ridentifier);
1058 
1059 	nvlist_add_string(nvl, "qname", r->qname);
1060 	nvlist_add_string(nvl, "tagname", r->tagname);
1061 	nvlist_add_number(nvl, "dnpipe", r->dnpipe);
1062 	nvlist_add_number(nvl, "dnflags", r->dnflags);
1063 
1064 	nvlist_add_string(nvl, "bridge_to", r->bridge_to);
1065 
1066 	nvlist_add_number(nvl, "action", r->action);
1067 
1068 	packed = nvlist_pack(nvl, &size);
1069 	if (packed == NULL) {
1070 		nvlist_destroy(nvl);
1071 		return (ENOMEM);
1072 	}
1073 
1074 	nv.len = size;
1075 	nv.size = size;
1076 	nv.data = packed;
1077 
1078 	if (ioctl(dev, DIOCADDETHRULE, &nv) != 0)
1079 		error = errno;
1080 
1081 	free(packed);
1082 	nvlist_destroy(nvl);
1083 
1084 	return (error);
1085 }
1086 
1087 static void
1088 snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr)
1089 {
1090 	int off;
1091 
1092 	off = snl_add_msg_attr_nested(nw, type);
1093 
1094 	snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6);
1095 	snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6);
1096 
1097 	if (addr->type == PF_ADDR_DYNIFTL)
1098 		snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname);
1099 	if (addr->type == PF_ADDR_TABLE)
1100 		snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname);
1101 	snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type);
1102 	snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags);
1103 
1104 	snl_end_attr_nested(nw, off);
1105 }
1106 
1107 static void
1108 snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa)
1109 {
1110 	int off;
1111 
1112 	off = snl_add_msg_attr_nested(nw, type);
1113 
1114 	snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname);
1115 	snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr);
1116 
1117 	snl_end_attr_nested(nw, off);
1118 }
1119 
1120 static void
1121 snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr)
1122 {
1123 	int off;
1124 
1125 	off = snl_add_msg_attr_nested(nw, type);
1126 
1127 	snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr);
1128 	snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]);
1129 	snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]);
1130 	snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg);
1131 	snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op);
1132 
1133 	snl_end_attr_nested(nw, off);
1134 }
1135 
1136 static void
1137 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])
1138 {
1139 	int off, i = 0;
1140 
1141 	off = snl_add_msg_attr_nested(nw, type);
1142 
1143 	while (i < PF_RULE_MAX_LABEL_COUNT &&
1144 	    labels[i][0] != 0) {
1145 		snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]);
1146 		i++;
1147 	}
1148 
1149 	snl_end_attr_nested(nw, off);
1150 }
1151 
1152 static void
1153 snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me)
1154 {
1155 	int off;
1156 
1157 	off = snl_add_msg_attr_nested(nw, type);
1158 
1159 	snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset);
1160 	snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen);
1161 	snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid);
1162 
1163 	snl_end_attr_nested(nw, off);
1164 }
1165 
1166 static void
1167 snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool)
1168 {
1169 	int off;
1170 
1171 	off = snl_add_msg_attr_nested(nw, type);
1172 
1173 	snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key);
1174 	snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6);
1175 	snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx);
1176 	snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]);
1177 	snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]);
1178 	snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts);
1179 	snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape);
1180 
1181 	snl_end_attr_nested(nw, off);
1182 }
1183 
1184 static void
1185 snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts)
1186 {
1187 	int off;
1188 
1189 	off = snl_add_msg_attr_nested(nw, type);
1190 
1191 	for (int i = 0; i < PFTM_MAX; i++)
1192 		snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]);
1193 
1194 	snl_end_attr_nested(nw, off);
1195 }
1196 
1197 static void
1198 snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid)
1199 {
1200 	int off;
1201 
1202 	off = snl_add_msg_attr_nested(nw, type);
1203 
1204 	snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]);
1205 	snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]);
1206 	snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op);
1207 
1208 	snl_end_attr_nested(nw, off);
1209 }
1210 
1211 static void
1212 snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r)
1213 {
1214 	int off;
1215 
1216 	off = snl_add_msg_attr_nested(nw, type);
1217 
1218 	snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src);
1219 	snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst);
1220 	snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label);
1221 	snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier);
1222 	snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname);
1223 	snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname);
1224 	snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname);
1225 	snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname);
1226 	snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname);
1227 	snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname);
1228 	snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr);
1229 	snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat);
1230 	snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint);
1231 	snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid);
1232 	snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout);
1233 	snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states);
1234 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes);
1235 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states);
1236 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn);
1237 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit);
1238 	snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds);
1239 
1240 	snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe);
1241 	snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe);
1242 	snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags);
1243 
1244 	snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr);
1245 	snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob);
1246 	snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid);
1247 	snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid);
1248 
1249 	snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp);
1250 	snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6);
1251 	snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss);
1252 	snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags);
1253 
1254 	snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid);
1255 	snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid);
1256 	snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname);
1257 
1258 	snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag);
1259 	snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action);
1260 	snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction);
1261 	snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log);
1262 	snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif);
1263 	snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick);
1264 	snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot);
1265 	snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not);
1266 	snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass);
1267 	snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state);
1268 	snl_add_msg_attr_u8(nw, PF_RT_AF, r->af);
1269 	snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto);
1270 	snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type);
1271 	snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code);
1272 	snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags);
1273 	snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset);
1274 	snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl);
1275 	snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts);
1276 	snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt);
1277 	snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl);
1278 	snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos);
1279 	snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos);
1280 
1281 	snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative);
1282 	snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard);
1283 	snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush);
1284 	snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio);
1285 	snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]);
1286 	snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]);
1287 	snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf);
1288 
1289 	snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6);
1290 	snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port);
1291 
1292 	snl_end_attr_nested(nw, off);
1293 }
1294 
1295 int
1296 pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor,
1297     const char *anchor_call, uint32_t ticket, uint32_t pool_ticket)
1298 {
1299 	struct pfctl_handle *h;
1300 	int ret;
1301 
1302 	h = pfctl_open(PF_DEVICE);
1303 	if (h == NULL)
1304 		return (ENODEV);
1305 
1306 	ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket);
1307 
1308 	pfctl_close(h);
1309 
1310 	return (ret);
1311 }
1312 
1313 int
1314 pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r,
1315 	    const char *anchor, const char *anchor_call, uint32_t ticket,
1316 	    uint32_t pool_ticket)
1317 {
1318 	struct snl_writer nw;
1319 	struct snl_errmsg_data e = {};
1320 	struct nlmsghdr *hdr;
1321 	uint32_t seq_id;
1322 	int family_id;
1323 
1324 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1325 	if (family_id == 0)
1326 		return (ENOTSUP);
1327 
1328 	snl_init_writer(&h->ss, &nw);
1329 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE);
1330 	hdr->nlmsg_flags |= NLM_F_DUMP;
1331 	snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket);
1332 	snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket);
1333 	snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor);
1334 	snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call);
1335 
1336 	snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r);
1337 
1338 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
1339 		return (ENXIO);
1340 
1341 	seq_id = hdr->nlmsg_seq;
1342 
1343 	if (! snl_send_message(&h->ss, hdr))
1344 		return (ENXIO);
1345 
1346 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1347 	}
1348 
1349 	return (e.error);
1350 }
1351 
1352 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1353 #define	_OUT(_field)	offsetof(struct pfctl_rules_info, _field)
1354 static struct snl_attr_parser ap_getrules[] = {
1355 	{ .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
1356 	{ .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
1357 };
1358 #undef _IN
1359 #undef _OUT
1360 SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules);
1361 
1362 int
1363 pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset,
1364     const char *path)
1365 {
1366 	struct snl_errmsg_data e = {};
1367 	struct nlmsghdr *hdr;
1368 	struct snl_writer nw;
1369 	uint32_t seq_id;
1370 	int family_id;
1371 
1372 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1373 	if (family_id == 0)
1374 		return (ENOTSUP);
1375 
1376 	snl_init_writer(&h->ss, &nw);
1377 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES);
1378 	hdr->nlmsg_flags |= NLM_F_DUMP;
1379 
1380 	snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path);
1381 	snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1382 
1383 	hdr = snl_finalize_msg(&nw);
1384 	if (hdr == NULL)
1385 		return (ENOMEM);
1386 
1387 	seq_id = hdr->nlmsg_seq;
1388 	if (! snl_send_message(&h->ss, hdr))
1389 		return (ENXIO);
1390 
1391 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1392 		if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules))
1393 			continue;
1394 	}
1395 
1396 	return (e.error);
1397 }
1398 
1399 int
1400 pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset,
1401     const char *path)
1402 {
1403 	struct pfctl_handle *h;
1404 	int error;
1405 
1406 	h = pfctl_open(PF_DEVICE);
1407 	if (h == NULL)
1408 		return (ENOTSUP);
1409 	error = pfctl_get_rules_info_h(h, rules, ruleset, path);
1410 	pfctl_close(h);
1411 
1412 	return (error);
1413 }
1414 
1415 int
1416 pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor,
1417     uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1418 {
1419 	return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule,
1420 	    anchor_call, false));
1421 }
1422 
1423 int
1424 pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor,
1425     uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call)
1426 {
1427 	return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule,
1428 	    anchor_call, false));
1429 }
1430 
1431 #define _OUT(_field)	offsetof(struct pf_addr_wrap, _field)
1432 static const struct snl_attr_parser ap_addr_wrap[] = {
1433 	{ .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr },
1434 	{ .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr },
1435 	{ .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string },
1436 	{ .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1437 	{ .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 },
1438 	{ .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 },
1439 	{ .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 },
1440 	{ .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 },
1441 };
1442 SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap);
1443 #undef _OUT
1444 
1445 #define _OUT(_field)	offsetof(struct pf_rule_addr, _field)
1446 static struct snl_attr_parser ap_rule_addr[] = {
1447 	{ .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
1448 	{ .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1449 	{ .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1450 	{ .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 },
1451 	{ .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 },
1452 };
1453 #undef _OUT
1454 SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr);
1455 
1456 struct snl_parsed_labels
1457 {
1458 	char		labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
1459 	uint32_t	i;
1460 };
1461 
1462 static bool
1463 snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1464     const void *arg __unused, void *target)
1465 {
1466 	struct snl_parsed_labels *l = (struct snl_parsed_labels *)target;
1467 	bool ret;
1468 
1469 	if (l->i >= PF_RULE_MAX_LABEL_COUNT)
1470 		return (E2BIG);
1471 
1472 	ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE,
1473 	    l->labels[l->i]);
1474 	if (ret)
1475 		l->i++;
1476 
1477 	return (ret);
1478 }
1479 
1480 #define _OUT(_field)	offsetof(struct nl_parsed_labels, _field)
1481 static const struct snl_attr_parser ap_labels[] = {
1482 	{ .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels },
1483 };
1484 SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels);
1485 #undef _OUT
1486 
1487 static bool
1488 snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla,
1489     const void *arg __unused, void *target)
1490 {
1491 	struct snl_parsed_labels parsed_labels = { };
1492 	bool error;
1493 
1494 	/* Assumes target points to the beginning of the structure */
1495 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels);
1496 	if (! error)
1497 		return (error);
1498 
1499 	memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels));
1500 
1501 	return (true);
1502 }
1503 
1504 #define _OUT(_field)	offsetof(struct pf_mape_portset, _field)
1505 static const struct snl_attr_parser ap_mape_portset[] = {
1506 	{ .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 },
1507 	{ .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 },
1508 	{. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 },
1509 };
1510 SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset);
1511 #undef _OUT
1512 
1513 #define _OUT(_field)	offsetof(struct pfctl_pool, _field)
1514 static const struct snl_attr_parser ap_pool[] = {
1515 	{ .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes },
1516 	{ .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr },
1517 	{ .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 },
1518 	{ .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 },
1519 	{ .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 },
1520 	{ .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 },
1521 	{ .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested },
1522 };
1523 SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool);
1524 #undef _OUT
1525 
1526 struct nl_parsed_timeouts
1527 {
1528 	uint32_t	timeouts[PFTM_MAX];
1529 	uint32_t	i;
1530 };
1531 
1532 static bool
1533 snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla,
1534     const void *arg __unused, void *target)
1535 {
1536 	struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target;
1537 	bool ret;
1538 
1539 	if (t->i >= PFTM_MAX)
1540 		return (E2BIG);
1541 
1542 	ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]);
1543 	if (ret)
1544 		t->i++;
1545 
1546 	return (ret);
1547 }
1548 
1549 #define _OUT(_field)	offsetof(struct nl_parsed_timeout, _field)
1550 static const struct snl_attr_parser ap_timeouts[] = {
1551 	{ .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout },
1552 };
1553 SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts);
1554 #undef _OUT
1555 
1556 static bool
1557 snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla,
1558     const void *arg __unused, void *target)
1559 {
1560 	struct nl_parsed_timeouts parsed_timeouts = { };
1561 	bool error;
1562 
1563 	/* Assumes target points to the beginning of the structure */
1564 	error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts);
1565 	if (! error)
1566 		return (error);
1567 
1568 	memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts));
1569 
1570 	return (true);
1571 }
1572 
1573 #define _OUT(_field)	offsetof(struct pf_rule_uid, _field)
1574 static const struct snl_attr_parser ap_rule_uid[] = {
1575 	{ .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 },
1576 	{ .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 },
1577 	{ .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 },
1578 };
1579 SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid);
1580 #undef _OUT
1581 
1582 struct pfctl_nl_get_rule {
1583 	struct pfctl_rule r;
1584 	char anchor_call[MAXPATHLEN];
1585 };
1586 #define	_OUT(_field)	offsetof(struct pfctl_nl_get_rule, _field)
1587 static struct snl_attr_parser ap_getrule[] = {
1588 	{ .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1589 	{ .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested },
1590 	{ .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 },
1591 	{ .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels },
1592 	{ .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string },
1593 	{ .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1594 	{ .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string },
1595 	{ .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1596 	{ .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string },
1597 	{ .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string },
1598 	{ .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested },
1599 	{ .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 },
1600 	{ .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 },
1601 	{ .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts },
1602 	{ .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 },
1603 	{ .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 },
1604 	{ .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 },
1605 	{ .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 },
1606 	{ .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 },
1607 	{ .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 },
1608 	{ .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 },
1609 	{ .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 },
1610 	{ .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 },
1611 	{ .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 },
1612 	{ .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 },
1613 	{. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 },
1614 	{ .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 },
1615 	{ .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 },
1616 	{ .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 },
1617 	{ .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 },
1618 	{ .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1619 	{ .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested },
1620 	{ .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 },
1621 	{ .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 },
1622 	{ .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 },
1623 	{ .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 },
1624 	{ .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 },
1625 	{ .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 },
1626 	{ .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 },
1627 	{ .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 },
1628 	{ .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 },
1629 	{ .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 },
1630 	{ .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 },
1631 	{ .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 },
1632 	{ .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 },
1633 	{ .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 },
1634 	{ .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 },
1635 	{ .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 },
1636 	{ .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 },
1637 	{ .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 },
1638 	{ .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 },
1639 	{ .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 },
1640 	{ .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 },
1641 	{ .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 },
1642 	{ .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 },
1643 	{ .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 },
1644 	{ .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 },
1645 	{ .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 },
1646 	{ .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 },
1647 	{ .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 },
1648 	{ .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr },
1649 	{ .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 },
1650 	{ .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 },
1651 	{ .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 },
1652 	{ .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 },
1653 	{ .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 },
1654 	{ .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 },
1655 	{ .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 },
1656 	{ .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 },
1657 	{ .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 },
1658 	{ .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 },
1659 	{ .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string },
1660 	{ .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string },
1661 	{ .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 },
1662 	{ .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested },
1663 	{ .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 },
1664 };
1665 #undef _OUT
1666 SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule);
1667 
1668 int
1669 pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket,
1670     const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1671     char *anchor_call, bool clear)
1672 {
1673 	struct pfctl_nl_get_rule attrs = {};
1674 	struct snl_errmsg_data e = {};
1675 	struct nlmsghdr *hdr;
1676 	struct snl_writer nw;
1677 	uint32_t seq_id;
1678 	int family_id;
1679 
1680 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
1681 	if (family_id == 0)
1682 		return (ENOTSUP);
1683 
1684 	snl_init_writer(&h->ss, &nw);
1685 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE);
1686 	hdr->nlmsg_flags |= NLM_F_DUMP;
1687 
1688 	snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor);
1689 	snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset);
1690 	snl_add_msg_attr_u32(&nw, PF_GR_NR, nr);
1691 	snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket);
1692 	snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear);
1693 
1694 	hdr = snl_finalize_msg(&nw);
1695 	if (hdr == NULL)
1696 		return (ENOMEM);
1697 
1698 	seq_id = hdr->nlmsg_seq;
1699 	if (! snl_send_message(&h->ss, hdr))
1700 		return (ENXIO);
1701 
1702 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
1703 		if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs))
1704 			continue;
1705 	}
1706 
1707 	memcpy(rule, &attrs.r, sizeof(attrs.r));
1708 	strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN);
1709 
1710 	return (e.error);
1711 }
1712 
1713 int
1714 pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket,
1715 	    const char *anchor, uint32_t ruleset, struct pfctl_rule *rule,
1716 	    char *anchor_call, bool clear)
1717 {
1718 	nvlist_t *nvl;
1719 	int ret;
1720 
1721 	nvl = nvlist_create(0);
1722 	if (nvl == 0)
1723 		return (ENOMEM);
1724 
1725 	nvlist_add_number(nvl, "nr", nr);
1726 	nvlist_add_number(nvl, "ticket", ticket);
1727 	nvlist_add_string(nvl, "anchor", anchor);
1728 	nvlist_add_number(nvl, "ruleset", ruleset);
1729 
1730 	if (clear)
1731 		nvlist_add_bool(nvl, "clear_counter", true);
1732 
1733 	if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0)
1734 		goto out;
1735 
1736 	pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule);
1737 
1738 	if (anchor_call)
1739 		strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"),
1740 		    MAXPATHLEN);
1741 
1742 out:
1743 	nvlist_destroy(nvl);
1744 	return (ret);
1745 }
1746 
1747 int
1748 pfctl_set_keepcounters(int dev, bool keep)
1749 {
1750 	struct pfioc_nv	 nv;
1751 	nvlist_t	*nvl;
1752 	int		 ret;
1753 
1754 	nvl = nvlist_create(0);
1755 
1756 	nvlist_add_bool(nvl, "keep_counters", keep);
1757 
1758 	nv.data = nvlist_pack(nvl, &nv.len);
1759 	nv.size = nv.len;
1760 
1761 	nvlist_destroy(nvl);
1762 
1763 	ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv);
1764 
1765 	free(nv.data);
1766 	return (ret);
1767 }
1768 
1769 struct pfctl_creator {
1770 	uint32_t id;
1771 };
1772 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1773 #define	_OUT(_field)	offsetof(struct pfctl_creator, _field)
1774 static struct snl_attr_parser ap_creators[] = {
1775 	{ .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 },
1776 };
1777 #undef _IN
1778 #undef _OUT
1779 SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators);
1780 
1781 static int
1782 pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len)
1783 {
1784 
1785 	int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1786 	size_t i = 0;
1787 
1788 	struct nlmsghdr *hdr;
1789 	struct snl_writer nw;
1790 
1791 	if (family_id == 0)
1792 		return (ENOTSUP);
1793 
1794 	snl_init_writer(ss, &nw);
1795 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS);
1796 	hdr->nlmsg_flags |= NLM_F_DUMP;
1797 	hdr = snl_finalize_msg(&nw);
1798 	if (hdr == NULL)
1799 		return (ENOMEM);
1800 	uint32_t seq_id = hdr->nlmsg_seq;
1801 
1802 	snl_send_message(ss, hdr);
1803 
1804 	struct snl_errmsg_data e = {};
1805 	while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1806 		struct pfctl_creator c;
1807 		bzero(&c, sizeof(c));
1808 
1809 		if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c))
1810 			continue;
1811 
1812 		creators[i] = c.id;
1813 		i++;
1814 		if (i > *len)
1815 			return (E2BIG);
1816 	}
1817 
1818 	*len = i;
1819 
1820 	return (0);
1821 }
1822 
1823 int
1824 pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len)
1825 {
1826 	int error;
1827 
1828 	error = pfctl_get_creators_nl(&h->ss, creators, len);
1829 
1830 	return (error);
1831 }
1832 
1833 static inline bool
1834 snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla,
1835     const void *arg __unused, void *target)
1836 {
1837 	memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla));
1838 	return (true);
1839 }
1840 
1841 static inline bool
1842 snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla,
1843     const void *arg __unused, void *target)
1844 {
1845 	size_t maxlen = NLA_DATA_LEN(nla);
1846 
1847 	if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) {
1848 		strlcpy(target, (char *)NLA_DATA(nla), maxlen);
1849 		return (true);
1850 	}
1851 	return (false);
1852 }
1853 
1854 #define	_OUT(_field)	offsetof(struct pfctl_state_peer, _field)
1855 static const struct snl_attr_parser nla_p_speer[] = {
1856 	{ .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 },
1857 	{ .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 },
1858 	{ .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 },
1859 	{ .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 },
1860 	{ .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 },
1861 };
1862 SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer);
1863 #undef _OUT
1864 
1865 #define	_OUT(_field)	offsetof(struct pfctl_state_key, _field)
1866 static const struct snl_attr_parser nla_p_skey[] = {
1867 	{ .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr },
1868 	{ .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr },
1869 	{ .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 },
1870 	{ .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 },
1871 	{ .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
1872 	{ .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 },
1873 };
1874 SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey);
1875 #undef _OUT
1876 
1877 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
1878 #define	_OUT(_field)	offsetof(struct pfctl_state, _field)
1879 static struct snl_attr_parser ap_state[] = {
1880 	{ .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 },
1881 	{ .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 },
1882 	{ .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname },
1883 	{ .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname },
1884 	{ .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1885 	{ .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested },
1886 	{ .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested },
1887 	{ .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested },
1888 	{ .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr },
1889 	{ .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
1890 	{ .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 },
1891 	{ .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 },
1892 	{ .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 },
1893 	{ .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 },
1894 	{ .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
1895 	{ .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
1896 	{ .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
1897 	{ .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
1898 	{ .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 },
1899 	{ .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 },
1900 	{ .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 },
1901 	{ .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 },
1902 	{ .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 },
1903 	{ .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 },
1904 	{ .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 },
1905 	{ .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 },
1906 	{ .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 },
1907 	{ .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 },
1908 	{ .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname },
1909 };
1910 #undef _IN
1911 #undef _OUT
1912 SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state);
1913 
1914 static const struct snl_hdr_parser *all_parsers[] = {
1915 	&state_parser, &skey_parser, &speer_parser,
1916 	&creator_parser, &getrules_parser
1917 };
1918 
1919 static int
1920 pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg)
1921 {
1922 	SNL_VERIFY_PARSERS(all_parsers);
1923 	int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME);
1924 	int ret;
1925 
1926 	struct nlmsghdr *hdr;
1927 	struct snl_writer nw;
1928 
1929 	if (family_id == 0)
1930 		return (ENOTSUP);
1931 
1932 	snl_init_writer(ss, &nw);
1933 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES);
1934 	hdr->nlmsg_flags |= NLM_F_DUMP;
1935 	snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname);
1936 	snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto);
1937 	snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af);
1938 	snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6);
1939 	snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6);
1940 
1941 	hdr = snl_finalize_msg(&nw);
1942 	if (hdr == NULL)
1943 		return (ENOMEM);
1944 
1945 	uint32_t seq_id = hdr->nlmsg_seq;
1946 
1947 	snl_send_message(ss, hdr);
1948 
1949 	struct snl_errmsg_data e = {};
1950 	while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) {
1951 		struct pfctl_state s;
1952 		bzero(&s, sizeof(s));
1953 		if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s))
1954 			continue;
1955 
1956 		ret = f(&s, arg);
1957 		if (ret != 0)
1958 			return (ret);
1959 	}
1960 
1961 	return (0);
1962 }
1963 
1964 int
1965 pfctl_get_states_iter(pfctl_get_state_fn f, void *arg)
1966 {
1967 	struct pfctl_state_filter filter = {};
1968 	return (pfctl_get_filtered_states_iter(&filter, f, arg));
1969 }
1970 
1971 int
1972 pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg)
1973 {
1974 	struct snl_state ss = {};
1975 	int error;
1976 
1977 	snl_init(&ss, NETLINK_GENERIC);
1978 	error = pfctl_get_states_nl(filter, &ss, f, arg);
1979 	snl_free(&ss);
1980 
1981 	return (error);
1982 }
1983 
1984 static int
1985 pfctl_append_states(struct pfctl_state *s, void *arg)
1986 {
1987 	struct pfctl_state *new;
1988 	struct pfctl_states *states = (struct pfctl_states *)arg;
1989 
1990 	new = malloc(sizeof(*s));
1991 	if (new == NULL)
1992 		return (ENOMEM);
1993 
1994 	memcpy(new, s, sizeof(*s));
1995 
1996 	TAILQ_INSERT_TAIL(&states->states, new, entry);
1997 
1998 	return (0);
1999 }
2000 
2001 int
2002 pfctl_get_states(int dev __unused, struct pfctl_states *states)
2003 {
2004 	int ret;
2005 
2006 	bzero(states, sizeof(*states));
2007 	TAILQ_INIT(&states->states);
2008 
2009 	ret = pfctl_get_states_iter(pfctl_append_states, states);
2010 	if (ret != 0) {
2011 		pfctl_free_states(states);
2012 		return (ret);
2013 	}
2014 
2015 	return (0);
2016 }
2017 
2018 void
2019 pfctl_free_states(struct pfctl_states *states)
2020 {
2021 	struct pfctl_state *s, *tmp;
2022 
2023 	TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) {
2024 		free(s);
2025 	}
2026 
2027 	bzero(states, sizeof(*states));
2028 }
2029 
2030 struct pfctl_nl_clear_states {
2031 	uint32_t killed;
2032 };
2033 #define	_OUT(_field)	offsetof(struct pfctl_nl_clear_states, _field)
2034 static struct snl_attr_parser ap_clear_states[] = {
2035 	{ .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 },
2036 };
2037 #undef _OUT
2038 SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states);
2039 
2040 static int
2041 _pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2042     unsigned int *killed, int cmd)
2043 {
2044 	struct snl_writer nw;
2045 	struct snl_errmsg_data e = {};
2046 	struct pfctl_nl_clear_states attrs = {};
2047 	struct nlmsghdr *hdr;
2048 	uint32_t seq_id;
2049 	int family_id;
2050 
2051 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2052 	if (family_id == 0)
2053 		return (ENOTSUP);
2054 
2055 	snl_init_writer(&h->ss, &nw);
2056 	hdr = snl_create_genl_msg_request(&nw, family_id, cmd);
2057 	hdr->nlmsg_flags |= NLM_F_DUMP;
2058 
2059 	snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id);
2060 	snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid));
2061 	snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction);
2062 	snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af);
2063 	snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto);
2064 	snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src);
2065 	snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst);
2066 	snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr);
2067 	snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname);
2068 	snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label);
2069 	snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match);
2070 	snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat);
2071 
2072 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2073 		return (ENXIO);
2074 
2075 	seq_id = hdr->nlmsg_seq;
2076 
2077 	if (! snl_send_message(&h->ss, hdr))
2078 		return (ENXIO);
2079 
2080 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2081 		if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs))
2082 			continue;
2083 	}
2084 
2085 	if (killed)
2086 		*killed = attrs.killed;
2087 
2088 	return (e.error);
2089 }
2090 
2091 int
2092 pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2093     unsigned int *killed)
2094 {
2095 	return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES));
2096 }
2097 
2098 int
2099 pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill,
2100     unsigned int *killed)
2101 {
2102 	return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES));
2103 }
2104 
2105 static int
2106 _pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2107     unsigned int *killed, uint64_t cmd)
2108 {
2109 	struct pfctl_handle *h;
2110 	int ret;
2111 
2112 	h = pfctl_open(PF_DEVICE);
2113 	if (h == NULL)
2114 		return (ENODEV);
2115 
2116 	ret = _pfctl_clear_states_h(h, kill, killed, cmd);
2117 	pfctl_close(h);
2118 
2119 	return (ret);
2120 }
2121 
2122 int
2123 pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill,
2124     unsigned int *killed)
2125 {
2126 	return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES));
2127 }
2128 
2129 int
2130 pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed)
2131 {
2132 	return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES));
2133 }
2134 
2135 int
2136 pfctl_clear_rules(int dev, const char *anchorname)
2137 {
2138 	struct pfioc_trans trans;
2139 	struct pfioc_trans_e transe[2];
2140 	int ret;
2141 
2142 	bzero(&trans, sizeof(trans));
2143 	bzero(&transe, sizeof(transe));
2144 
2145 	transe[0].rs_num = PF_RULESET_SCRUB;
2146 	if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2147 	    >= sizeof(transe[0].anchor))
2148 		return (E2BIG);
2149 
2150 	transe[1].rs_num = PF_RULESET_FILTER;
2151 	if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2152 	    >= sizeof(transe[1].anchor))
2153 		return (E2BIG);
2154 
2155 	trans.size = 2;
2156 	trans.esize = sizeof(transe[0]);
2157 	trans.array = transe;
2158 
2159 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2160 	if (ret != 0)
2161 		return (errno);
2162 	ret = ioctl(dev, DIOCXCOMMIT, &trans);
2163 	if (ret != 0)
2164 		return (errno);
2165 
2166 	return (0);
2167 }
2168 
2169 int
2170 pfctl_clear_nat(int dev, const char *anchorname)
2171 {
2172 	struct pfioc_trans trans;
2173 	struct pfioc_trans_e transe[3];
2174 	int ret;
2175 
2176 	bzero(&trans, sizeof(trans));
2177 	bzero(&transe, sizeof(transe));
2178 
2179 	transe[0].rs_num = PF_RULESET_NAT;
2180 	if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor))
2181 	    >= sizeof(transe[0].anchor))
2182 		return (E2BIG);
2183 
2184 	transe[1].rs_num = PF_RULESET_BINAT;
2185 	if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor))
2186 	    >= sizeof(transe[0].anchor))
2187 		return (E2BIG);
2188 
2189 	transe[2].rs_num = PF_RULESET_RDR;
2190 	if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor))
2191 	    >= sizeof(transe[2].anchor))
2192 		return (E2BIG);
2193 
2194 	trans.size = 3;
2195 	trans.esize = sizeof(transe[0]);
2196 	trans.array = transe;
2197 
2198 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2199 	if (ret != 0)
2200 		return (errno);
2201 	ret = ioctl(dev, DIOCXCOMMIT, &trans);
2202 	if (ret != 0)
2203 		return (errno);
2204 
2205 	return (0);
2206 }
2207 
2208 int
2209 pfctl_clear_eth_rules(int dev, const char *anchorname)
2210 {
2211 	struct pfioc_trans trans;
2212 	struct pfioc_trans_e transe;
2213 	int ret;
2214 
2215 	bzero(&trans, sizeof(trans));
2216 	bzero(&transe, sizeof(transe));
2217 
2218 	transe.rs_num = PF_RULESET_ETH;
2219 	if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor))
2220 	    >= sizeof(transe.anchor))
2221 		return (E2BIG);
2222 
2223 	trans.size = 1;
2224 	trans.esize = sizeof(transe);
2225 	trans.array = &transe;
2226 
2227 	ret = ioctl(dev, DIOCXBEGIN, &trans);
2228 	if (ret != 0)
2229 		return (errno);
2230 	ret = ioctl(dev, DIOCXCOMMIT, &trans);
2231 	if (ret != 0)
2232 		return (errno);
2233 
2234 	return (0);
2235 }
2236 
2237 static int
2238 _pfctl_get_limit(int dev, const int index, uint *limit)
2239 {
2240 	struct pfioc_limit pl;
2241 
2242 	bzero(&pl, sizeof(pl));
2243 	pl.index = index;
2244 
2245 	if (ioctl(dev, DIOCGETLIMIT, &pl) == -1)
2246 		return (errno);
2247 
2248 	*limit = pl.limit;
2249 
2250 	return (0);
2251 }
2252 
2253 int
2254 pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s)
2255 {
2256 	struct pfioc_nv	 nv;
2257 	nvlist_t	*nvl;
2258 	int		 ret;
2259 	uint		 state_limit;
2260 	uint64_t	 lim, hi, lo;
2261 
2262 	ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2263 	if (ret != 0)
2264 		return (ret);
2265 
2266 	lim = state_limit;
2267 	hi = lim * s->highwater / 100;
2268 	lo = lim * s->lowwater / 100;
2269 
2270 	if (lo == hi)
2271 		hi++;
2272 
2273 	nvl = nvlist_create(0);
2274 
2275 	nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER);
2276 	nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE);
2277 	nvlist_add_number(nvl, "highwater", hi);
2278 	nvlist_add_number(nvl, "lowwater", lo);
2279 
2280 	nv.data = nvlist_pack(nvl, &nv.len);
2281 	nv.size = nv.len;
2282 	nvlist_destroy(nvl);
2283 	nvl = NULL;
2284 
2285 	ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv);
2286 
2287 	free(nv.data);
2288 	if (ret != 0)
2289 		return (errno);
2290 
2291 	return (0);
2292 }
2293 
2294 int
2295 pfctl_get_syncookies(int dev, struct pfctl_syncookies *s)
2296 {
2297 	nvlist_t	*nvl;
2298 	int		 ret;
2299 	uint		 state_limit;
2300 	bool		 enabled, adaptive;
2301 
2302 	ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit);
2303 	if (ret != 0)
2304 		return (ret);
2305 
2306 	bzero(s, sizeof(*s));
2307 
2308 	nvl = nvlist_create(0);
2309 
2310 	if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) {
2311 		ret = errno;
2312 		goto out;
2313 	}
2314 
2315 	enabled = nvlist_get_bool(nvl, "enabled");
2316 	adaptive = nvlist_get_bool(nvl, "adaptive");
2317 
2318 	if (enabled) {
2319 		if (adaptive)
2320 			s->mode = PFCTL_SYNCOOKIES_ADAPTIVE;
2321 		else
2322 			s->mode = PFCTL_SYNCOOKIES_ALWAYS;
2323 	} else {
2324 		s->mode = PFCTL_SYNCOOKIES_NEVER;
2325 	}
2326 
2327 	s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit;
2328 	s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit;
2329 	s->halfopen_states = nvlist_get_number(nvl, "halfopen_states");
2330 
2331 out:
2332 	nvlist_destroy(nvl);
2333 	return (ret);
2334 }
2335 
2336 int
2337 pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2338     *addr, int size, int *nadd, int flags)
2339 {
2340 	struct pfioc_table io;
2341 
2342 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2343 		return (EINVAL);
2344 	}
2345 	bzero(&io, sizeof io);
2346 	io.pfrio_flags = flags;
2347 	io.pfrio_table = *tbl;
2348 	io.pfrio_buffer = addr;
2349 	io.pfrio_esize = sizeof(*addr);
2350 	io.pfrio_size = size;
2351 
2352 	if (ioctl(dev, DIOCRADDADDRS, &io))
2353 		return (errno);
2354 	if (nadd != NULL)
2355 		*nadd = io.pfrio_nadd;
2356 	return (0);
2357 }
2358 
2359 int
2360 pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2361     *addr, int size, int *ndel, int flags)
2362 {
2363 	struct pfioc_table io;
2364 
2365 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2366 		return (EINVAL);
2367 	}
2368 	bzero(&io, sizeof io);
2369 	io.pfrio_flags = flags;
2370 	io.pfrio_table = *tbl;
2371 	io.pfrio_buffer = addr;
2372 	io.pfrio_esize = sizeof(*addr);
2373 	io.pfrio_size = size;
2374 
2375 	if (ioctl(dev, DIOCRDELADDRS, &io))
2376 		return (errno);
2377 	if (ndel != NULL)
2378 		*ndel = io.pfrio_ndel;
2379 	return (0);
2380 }
2381 
2382 int
2383 pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr
2384     *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags)
2385 {
2386 	struct pfioc_table io;
2387 
2388 	if (tbl == NULL || size < 0 || (size && addr == NULL)) {
2389 		return (EINVAL);
2390 	}
2391 	bzero(&io, sizeof io);
2392 	io.pfrio_flags = flags;
2393 	io.pfrio_table = *tbl;
2394 	io.pfrio_buffer = addr;
2395 	io.pfrio_esize = sizeof(*addr);
2396 	io.pfrio_size = size;
2397 	io.pfrio_size2 = (size2 != NULL) ? *size2 : 0;
2398 	if (ioctl(dev, DIOCRSETADDRS, &io))
2399 		return (errno);
2400 	if (nadd != NULL)
2401 		*nadd = io.pfrio_nadd;
2402 	if (ndel != NULL)
2403 		*ndel = io.pfrio_ndel;
2404 	if (nchange != NULL)
2405 		*nchange = io.pfrio_nchange;
2406 	if (size2 != NULL)
2407 		*size2 = io.pfrio_size2;
2408 	return (0);
2409 }
2410 
2411 int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr,
2412     int *size, int flags)
2413 {
2414 	struct pfioc_table io;
2415 
2416 	if (tbl == NULL || size == NULL || *size < 0 ||
2417 	    (*size && addr == NULL)) {
2418 		return (EINVAL);
2419 	}
2420 	bzero(&io, sizeof io);
2421 	io.pfrio_flags = flags;
2422 	io.pfrio_table = *tbl;
2423 	io.pfrio_buffer = addr;
2424 	io.pfrio_esize = sizeof(*addr);
2425 	io.pfrio_size = *size;
2426 	if (ioctl(dev, DIOCRGETADDRS, &io))
2427 		return (errno);
2428 	*size = io.pfrio_size;
2429 	return (0);
2430 }
2431 
2432 int
2433 pfctl_set_statusif(struct pfctl_handle *h, const char *ifname)
2434 {
2435 	struct snl_writer nw;
2436 	struct snl_errmsg_data e = {};
2437 	struct nlmsghdr *hdr;
2438 	uint32_t seq_id;
2439 	int family_id;
2440 
2441 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2442 	if (family_id == 0)
2443 		return (ENOTSUP);
2444 
2445 	snl_init_writer(&h->ss, &nw);
2446 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF);
2447 
2448 	snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname);
2449 
2450 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2451 		return (ENXIO);
2452 
2453 	seq_id = hdr->nlmsg_seq;
2454 
2455 	if (! snl_send_message(&h->ss, hdr))
2456 		return (ENXIO);
2457 
2458 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2459 	}
2460 
2461 	return (e.error);
2462 }
2463 
2464 #define	_IN(_field)	offsetof(struct genlmsghdr, _field)
2465 #define	_OUT(_field)	offsetof(struct pfctl_natlook, _field)
2466 static struct snl_attr_parser ap_natlook[] = {
2467 	{ .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr },
2468 	{ .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr },
2469 	{ .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 },
2470 	{ .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 },
2471 };
2472 #undef _IN
2473 #undef _OUT
2474 SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook);
2475 
2476 int
2477 pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
2478     struct pfctl_natlook *r)
2479 {
2480 	struct snl_writer nw;
2481 	struct snl_errmsg_data e = {};
2482 	struct nlmsghdr *hdr;
2483 	uint32_t seq_id;
2484 	int family_id;
2485 
2486 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2487 	if (family_id == 0)
2488 		return (ENOTSUP);
2489 
2490 	snl_init_writer(&h->ss, &nw);
2491 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK);
2492 	hdr->nlmsg_flags |= NLM_F_DUMP;
2493 
2494 	snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af);
2495 	snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction);
2496 	snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto);
2497 	snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6);
2498 	snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6);
2499 	snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport);
2500 	snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport);
2501 
2502 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2503 		return (ENXIO);
2504 
2505 	seq_id = hdr->nlmsg_seq;
2506 
2507 	if (! snl_send_message(&h->ss, hdr))
2508 		return (ENXIO);
2509 
2510 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2511 		if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r))
2512 			continue;
2513 	}
2514 
2515 	return (e.error);
2516 }
2517 
2518 int
2519 pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
2520 {
2521 	struct snl_writer nw;
2522 	struct snl_errmsg_data e = {};
2523 	struct nlmsghdr *hdr;
2524 	uint32_t seq_id;
2525 	int family_id;
2526 
2527 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2528 	if (family_id == 0)
2529 		return (ENOTSUP);
2530 
2531 	snl_init_writer(&h->ss, &nw);
2532 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
2533 
2534 	snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
2535 
2536 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2537 		return (ENXIO);
2538 
2539 	seq_id = hdr->nlmsg_seq;
2540 
2541 	if (! snl_send_message(&h->ss, hdr))
2542 		return (ENXIO);
2543 
2544 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2545 	}
2546 
2547 	return (e.error);
2548 }
2549 
2550 int
2551 pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds)
2552 {
2553 	struct snl_writer nw;
2554 	struct snl_errmsg_data e = {};
2555 	struct nlmsghdr *hdr;
2556 	uint32_t seq_id;
2557 	int family_id;
2558 
2559 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2560 	if (family_id == 0)
2561 		return (ENOTSUP);
2562 
2563 	snl_init_writer(&h->ss, &nw);
2564 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT);
2565 
2566 	snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2567 	snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds);
2568 
2569 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2570 		return (ENXIO);
2571 
2572 	seq_id = hdr->nlmsg_seq;
2573 
2574 	if (! snl_send_message(&h->ss, hdr))
2575 		return (ENXIO);
2576 
2577 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2578 	}
2579 
2580 	return (e.error);
2581 }
2582 
2583 struct pfctl_nl_timeout {
2584 	uint32_t seconds;
2585 };
2586 #define	_OUT(_field)	offsetof(struct pfctl_nl_timeout, _field)
2587 static struct snl_attr_parser ap_get_timeout[] = {
2588 	{ .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2589 };
2590 #undef _OUT
2591 SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout);
2592 
2593 int
2594 pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds)
2595 {
2596 	struct snl_writer nw;
2597 	struct pfctl_nl_timeout to = {};
2598 	struct snl_errmsg_data e = {};
2599 	struct nlmsghdr *hdr;
2600 	uint32_t seq_id;
2601 	int family_id;
2602 
2603 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2604 	if (family_id == 0)
2605 		return (ENOTSUP);
2606 
2607 	snl_init_writer(&h->ss, &nw);
2608 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT);
2609 	hdr->nlmsg_flags |= NLM_F_DUMP;
2610 
2611 	snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout);
2612 
2613 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2614 		return (ENXIO);
2615 
2616 	seq_id = hdr->nlmsg_seq;
2617 
2618 	if (! snl_send_message(&h->ss, hdr))
2619 		return (ENXIO);
2620 
2621 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2622 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to))
2623 			continue;
2624 	}
2625 
2626 	if (seconds != NULL)
2627 		*seconds = to.seconds;
2628 
2629 	return (e.error);
2630 }
2631 
2632 int
2633 pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit)
2634 {
2635 	struct snl_writer nw;
2636 	struct snl_errmsg_data e = {};
2637 	struct nlmsghdr *hdr;
2638 	uint32_t seq_id;
2639 	int family_id;
2640 
2641 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2642 	if (family_id == 0)
2643 		return (ENOTSUP);
2644 
2645 	snl_init_writer(&h->ss, &nw);
2646 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT);
2647 
2648 	snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2649 	snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit);
2650 
2651 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2652 		return (ENXIO);
2653 
2654 	seq_id = hdr->nlmsg_seq;
2655 
2656 	if (! snl_send_message(&h->ss, hdr))
2657 		return (ENXIO);
2658 
2659 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2660 	}
2661 
2662 	return (e.error);
2663 }
2664 
2665 struct pfctl_nl_limit {
2666 	unsigned int limit;
2667 };
2668 #define	_OUT(_field)	offsetof(struct pfctl_nl_limit, _field)
2669 static struct snl_attr_parser ap_get_limit[] = {
2670 	{ .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2671 };
2672 #undef _OUT
2673 SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit);
2674 
2675 int
2676 pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit)
2677 {
2678 	struct snl_writer nw;
2679 	struct pfctl_nl_limit li = {};
2680 	struct snl_errmsg_data e = {};
2681 	struct nlmsghdr *hdr;
2682 	uint32_t seq_id;
2683 	int family_id;
2684 
2685 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2686 	if (family_id == 0)
2687 		return (ENOTSUP);
2688 
2689 	snl_init_writer(&h->ss, &nw);
2690 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT);
2691 	hdr->nlmsg_flags |= NLM_F_DUMP;
2692 
2693 	snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index);
2694 
2695 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2696 		return (ENXIO);
2697 
2698 	seq_id = hdr->nlmsg_seq;
2699 
2700 	if (! snl_send_message(&h->ss, hdr))
2701 		return (ENXIO);
2702 
2703 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2704 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li))
2705 			continue;
2706 	}
2707 
2708 	if (limit != NULL)
2709 		*limit = li.limit;
2710 
2711 	return (e.error);
2712 }
2713 
2714 struct pfctl_nl_begin_addrs {
2715 	uint32_t ticket;
2716 };
2717 #define	_OUT(_field)	offsetof(struct pfctl_nl_begin_addrs, _field)
2718 static struct snl_attr_parser ap_begin_addrs[] = {
2719 	{ .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2720 };
2721 #undef _OUT
2722 SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs);
2723 
2724 int
2725 pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket)
2726 {
2727 	struct snl_writer nw;
2728 	struct pfctl_nl_begin_addrs attrs = {};
2729 	struct snl_errmsg_data e = {};
2730 	struct nlmsghdr *hdr;
2731 	uint32_t seq_id;
2732 	int family_id;
2733 
2734 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2735 	if (family_id == 0)
2736 		return (ENOTSUP);
2737 
2738 	snl_init_writer(&h->ss, &nw);
2739 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS);
2740 	hdr->nlmsg_flags |= NLM_F_DUMP;
2741 
2742 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2743 		return (ENXIO);
2744 
2745 	seq_id = hdr->nlmsg_seq;
2746 
2747 	if (! snl_send_message(&h->ss, hdr))
2748 		return (ENXIO);
2749 
2750 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2751 		if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs))
2752 			continue;
2753 	}
2754 
2755 	if (ticket != NULL)
2756 		*ticket = attrs.ticket;
2757 
2758 	return (e.error);
2759 }
2760 
2761 int
2762 pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which)
2763 {
2764 	struct snl_writer nw;
2765 	struct snl_errmsg_data e = {};
2766 	struct nlmsghdr *hdr;
2767 	uint32_t seq_id;
2768 	int family_id;
2769 
2770 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2771 	if (family_id == 0)
2772 		return (ENOTSUP);
2773 
2774 	snl_init_writer(&h->ss, &nw);
2775 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR);
2776 
2777 	snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action);
2778 	snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket);
2779 	snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr);
2780 	snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num);
2781 	snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action);
2782 	snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last);
2783 	snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af);
2784 	snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor);
2785 	snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr);
2786 	snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2787 
2788 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2789 		return (ENXIO);
2790 
2791 	seq_id = hdr->nlmsg_seq;
2792 
2793 	if (! snl_send_message(&h->ss, hdr))
2794 		return (ENXIO);
2795 
2796 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2797 	}
2798 
2799 	return (e.error);
2800 }
2801 
2802 static const struct snl_attr_parser ap_get_addrs[] = {
2803 	{ .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 },
2804 };
2805 SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs);
2806 
2807 int
2808 pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2809     uint8_t r_action, const char *anchor, uint32_t *nr, int which)
2810 {
2811 	struct snl_writer nw;
2812 	struct snl_errmsg_data e = {};
2813 	struct nlmsghdr *hdr;
2814 	uint32_t seq_id;
2815 	int family_id;
2816 
2817 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2818 	if (family_id == 0)
2819 		return (ENOTSUP);
2820 
2821 	snl_init_writer(&h->ss, &nw);
2822 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS);
2823 
2824 	snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2825 	snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2826 	snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2827 	snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2828 	snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2829 
2830 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2831 		return (ENXIO);
2832 
2833 	seq_id = hdr->nlmsg_seq;
2834 
2835 	if (! snl_send_message(&h->ss, hdr))
2836 		return (ENXIO);
2837 
2838 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2839 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr))
2840 			continue;
2841 	}
2842 
2843 	return (e.error);
2844 }
2845 
2846 #define _OUT(_field)	offsetof(struct pf_pooladdr, _field)
2847 static const struct snl_attr_parser ap_pool_addr[] = {
2848 	{ .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested },
2849 	{ .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string },
2850 };
2851 SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr);
2852 #undef _OUT
2853 
2854 #define _OUT(_field)	offsetof(struct pfioc_pooladdr, _field)
2855 static const struct snl_attr_parser ap_get_addr[] = {
2856 	{ .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 },
2857 	{ .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 },
2858 	{ .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2859 	{ .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 },
2860 	{ .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 },
2861 	{ .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 },
2862 	{ .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
2863 	{ .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string },
2864 	{ .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested },
2865 };
2866 SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr);
2867 #undef _OUT
2868 
2869 int
2870 pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num,
2871     uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa,
2872     int which)
2873 {
2874 	struct snl_writer nw;
2875 	struct snl_errmsg_data e = {};
2876 	struct nlmsghdr *hdr;
2877 	uint32_t seq_id;
2878 	int family_id;
2879 
2880 	family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2881 	if (family_id == 0)
2882 		return (ENOTSUP);
2883 
2884 	snl_init_writer(&h->ss, &nw);
2885 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR);
2886 
2887 	snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket);
2888 	snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num);
2889 	snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action);
2890 	snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor);
2891 	snl_add_msg_attr_u32(&nw, PF_AA_NR, nr);
2892 	snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which);
2893 
2894 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2895 		return (ENXIO);
2896 
2897 	seq_id = hdr->nlmsg_seq;
2898 
2899 	if (! snl_send_message(&h->ss, hdr))
2900 		return (ENXIO);
2901 
2902 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2903 		if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa))
2904 			continue;
2905 	}
2906 
2907 	return (e.error);
2908 }
2909 
2910 #define _OUT(_field)	offsetof(struct pfioc_ruleset, _field)
2911 static const struct snl_attr_parser ap_ruleset[] = {
2912 	{ .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 },
2913 	{ .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string },
2914 };
2915 SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset);
2916 #undef _OUT
2917 
2918 int
2919 pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr)
2920 {
2921 	struct snl_writer nw;
2922 	struct snl_errmsg_data e = {};
2923 	struct nlmsghdr *hdr;
2924 	struct pfioc_ruleset rs = {};
2925 	uint32_t seq_id;
2926 	int family_id;
2927 
2928 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2929 	if (family_id == 0)
2930 		return (ENOTSUP);
2931 
2932 	snl_init_writer(&h->ss, &nw);
2933 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS);
2934 
2935 	snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2936 
2937 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2938 		return (ENXIO);
2939 
2940 	seq_id = hdr->nlmsg_seq;
2941 
2942 	if (! snl_send_message(&h->ss, hdr))
2943 		return (ENXIO);
2944 
2945 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2946 		if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs))
2947 			continue;
2948 	}
2949 
2950 	*nr = rs.nr;
2951 
2952 	return (e.error);
2953 }
2954 
2955 int
2956 pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs)
2957 {
2958 	struct snl_writer nw;
2959 	struct snl_errmsg_data e = {};
2960 	struct nlmsghdr *hdr;
2961 	uint32_t seq_id;
2962 	int family_id;
2963 
2964 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
2965 	if (family_id == 0)
2966 		return (ENOTSUP);
2967 
2968 	snl_init_writer(&h->ss, &nw);
2969 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET);
2970 
2971 	snl_add_msg_attr_string(&nw, PF_RS_PATH, path);
2972 	snl_add_msg_attr_u32(&nw, PF_RS_NR, nr);
2973 
2974 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
2975 		return (ENXIO);
2976 
2977 	seq_id = hdr->nlmsg_seq;
2978 
2979 	if (! snl_send_message(&h->ss, hdr))
2980 		return (ENXIO);
2981 
2982 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
2983 		if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs))
2984 			continue;
2985 	}
2986 
2987 	return (e.error);
2988 }
2989 
2990 #define	_OUT(_field)	offsetof(struct pfctl_threshold, _field)
2991 static const struct snl_attr_parser ap_pfctl_threshold[] = {
2992 	{ .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 },
2993 	{ .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 },
2994 	{ .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 },
2995 	{ .type = PF_TH_LAST, .off = _OUT(last), .cb = snl_attr_get_uint32 },
2996 };
2997 SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold);
2998 #undef _OUT
2999 
3000 #define	_OUT(_field)	offsetof(struct pfctl_src_node, _field)
3001 static struct snl_attr_parser ap_srcnode[] = {
3002 	{ .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr },
3003 	{ .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr },
3004 	{ .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 },
3005 	{ .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 },
3006 	{ .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 },
3007 	{ .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 },
3008 	{ .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 },
3009 	{ .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 },
3010 	{ .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 },
3011 	{ .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 },
3012 	{ .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 },
3013 	{ .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 },
3014 	{ .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 },
3015 	{ .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested },
3016 	{ .type = PF_SN_NAF, .off = _OUT(naf), .cb = snl_attr_get_uint8 },
3017 };
3018 #undef _OUT
3019 SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode);
3020 
3021 int
3022 pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg)
3023 {
3024 	struct snl_writer nw;
3025 	struct pfctl_src_node sn;
3026 	struct snl_errmsg_data e = {};
3027 	struct nlmsghdr *hdr;
3028 	uint32_t seq_id;
3029 	int family_id;
3030 	int ret;
3031 
3032 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3033 	if (family_id == 0)
3034 		return (ENOTSUP);
3035 
3036 	snl_init_writer(&h->ss, &nw);
3037 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES);
3038 
3039 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
3040 		return (ENXIO);
3041 
3042 	seq_id = hdr->nlmsg_seq;
3043 
3044 	if (!snl_send_message(&h->ss, hdr))
3045 		return (ENXIO);
3046 
3047 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3048 		if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn))
3049 			continue;
3050 
3051 		ret = fn(&sn, arg);
3052 		if (ret != 0)
3053 			return (ret);
3054 	}
3055 
3056 	return (e.error);
3057 }
3058 
3059 static struct snl_attr_parser ap_ndel[] = {
3060 	{ .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 },
3061 };
3062 SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel);
3063 
3064 int
3065 pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter,
3066     int *ndel, int flags)
3067 {
3068 	struct snl_writer nw;
3069 	struct snl_errmsg_data e = {};
3070 	struct nlmsghdr *hdr;
3071 	uint32_t seq_id;
3072 	int family_id;
3073 
3074 	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
3075 	if (family_id == 0)
3076 		return (ENOTSUP);
3077 
3078 	snl_init_writer(&h->ss, &nw);
3079 	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES);
3080 
3081 	snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor);
3082 	snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name);
3083 	snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags);
3084 	snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags);
3085 
3086 	if ((hdr = snl_finalize_msg(&nw)) == NULL)
3087 		return (ENXIO);
3088 
3089 	seq_id = hdr->nlmsg_seq;
3090 
3091 	if (!snl_send_message(&h->ss, hdr))
3092 		return (ENXIO);
3093 
3094 	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
3095 		if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel))
3096 			continue;
3097 	}
3098 
3099 	return (e.error);
3100 }
3101