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uipc_domain.c revision 1.97 
      1 /*	$NetBSD: uipc_domain.c,v 1.97 2017/07/01 16:59:12 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1986, 1993
      5  *	The Regents of the University of California.  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  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)uipc_domain.c	8.3 (Berkeley) 2/14/95
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: uipc_domain.c,v 1.97 2017/07/01 16:59:12 christos Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/socket.h>
     39 #include <sys/socketvar.h>
     40 #include <sys/protosw.h>
     41 #include <sys/domain.h>
     42 #include <sys/mbuf.h>
     43 #include <sys/time.h>
     44 #include <sys/kernel.h>
     45 #include <sys/systm.h>
     46 #include <sys/callout.h>
     47 #include <sys/queue.h>
     48 #include <sys/proc.h>
     49 #include <sys/sysctl.h>
     50 #include <sys/un.h>
     51 #include <sys/unpcb.h>
     52 #include <sys/file.h>
     53 #include <sys/filedesc.h>
     54 #include <sys/kauth.h>
     55 
     56 #include <netatalk/at.h>
     57 #include <net/if_dl.h>
     58 #include <netinet/in.h>
     59 
     60 MALLOC_DECLARE(M_SOCKADDR);
     61 
     62 MALLOC_DEFINE(M_SOCKADDR, "sockaddr", "socket endpoints");
     63 
     64 void	pffasttimo(void *);
     65 void	pfslowtimo(void *);
     66 
     67 struct domainhead domains = STAILQ_HEAD_INITIALIZER(domains);
     68 static struct domain *domain_array[AF_MAX];
     69 
     70 callout_t pffasttimo_ch, pfslowtimo_ch;
     71 
     72 /*
     73  * Current time values for fast and slow timeouts.  We can use u_int
     74  * relatively safely.  The fast timer will roll over in 27 years and
     75  * the slow timer in 68 years.
     76  */
     77 u_int	pfslowtimo_now;
     78 u_int	pffasttimo_now;
     79 
     80 static struct sysctllog *domain_sysctllog;
     81 static void sysctl_net_setup(void);
     82 
     83 /* ensure successful linkage even without any domains in link sets */
     84 static struct domain domain_dummy;
     85 __link_set_add_rodata(domains,domain_dummy);
     86 
     87 void
     88 domaininit(bool attach)
     89 {
     90 	__link_set_decl(domains, struct domain);
     91 	struct domain * const * dpp;
     92 	struct domain *rt_domain = NULL;
     93 
     94 	sysctl_net_setup();
     95 
     96 	/*
     97 	 * Add all of the domains.  Make sure the PF_ROUTE
     98 	 * domain is added last.
     99 	 */
    100 	if (attach) {
    101 		__link_set_foreach(dpp, domains) {
    102 			if (*dpp == &domain_dummy)
    103 				continue;
    104 			if ((*dpp)->dom_family == PF_ROUTE)
    105 				rt_domain = *dpp;
    106 			else
    107 				domain_attach(*dpp);
    108 		}
    109 		if (rt_domain)
    110 			domain_attach(rt_domain);
    111 	}
    112 
    113 	callout_init(&pffasttimo_ch, CALLOUT_MPSAFE);
    114 	callout_init(&pfslowtimo_ch, CALLOUT_MPSAFE);
    115 
    116 	callout_reset(&pffasttimo_ch, 1, pffasttimo, NULL);
    117 	callout_reset(&pfslowtimo_ch, 1, pfslowtimo, NULL);
    118 }
    119 
    120 void
    121 domain_attach(struct domain *dp)
    122 {
    123 	const struct protosw *pr;
    124 
    125 	STAILQ_INSERT_TAIL(&domains, dp, dom_link);
    126 	if (dp->dom_family < __arraycount(domain_array))
    127 		domain_array[dp->dom_family] = dp;
    128 
    129 	if (dp->dom_init)
    130 		(*dp->dom_init)();
    131 
    132 #ifdef MBUFTRACE
    133 	if (dp->dom_mowner.mo_name[0] == '\0') {
    134 		strncpy(dp->dom_mowner.mo_name, dp->dom_name,
    135 		    sizeof(dp->dom_mowner.mo_name));
    136 		MOWNER_ATTACH(&dp->dom_mowner);
    137 	}
    138 #endif
    139 	for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
    140 		if (pr->pr_init)
    141 			(*pr->pr_init)();
    142 	}
    143 
    144 	if (max_linkhdr < 16)		/* XXX */
    145 		max_linkhdr = 16;
    146 	max_hdr = max_linkhdr + max_protohdr;
    147 	max_datalen = MHLEN - max_hdr;
    148 }
    149 
    150 struct domain *
    151 pffinddomain(int family)
    152 {
    153 	struct domain *dp;
    154 
    155 	if (family < __arraycount(domain_array) && domain_array[family] != NULL)
    156 		return domain_array[family];
    157 
    158 	DOMAIN_FOREACH(dp)
    159 		if (dp->dom_family == family)
    160 			return dp;
    161 	return NULL;
    162 }
    163 
    164 const struct protosw *
    165 pffindtype(int family, int type)
    166 {
    167 	struct domain *dp;
    168 	const struct protosw *pr;
    169 
    170 	dp = pffinddomain(family);
    171 	if (dp == NULL)
    172 		return NULL;
    173 
    174 	for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    175 		if (pr->pr_type && pr->pr_type == type)
    176 			return pr;
    177 
    178 	return NULL;
    179 }
    180 
    181 const struct protosw *
    182 pffindproto(int family, int protocol, int type)
    183 {
    184 	struct domain *dp;
    185 	const struct protosw *pr;
    186 	const struct protosw *maybe = NULL;
    187 
    188 	if (family == 0)
    189 		return NULL;
    190 
    191 	dp = pffinddomain(family);
    192 	if (dp == NULL)
    193 		return NULL;
    194 
    195 	for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
    196 		if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
    197 			return pr;
    198 
    199 		if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
    200 		    pr->pr_protocol == 0 && maybe == NULL)
    201 			maybe = pr;
    202 	}
    203 	return maybe;
    204 }
    205 
    206 void *
    207 sockaddr_addr(struct sockaddr *sa, socklen_t *slenp)
    208 {
    209 	const struct domain *dom;
    210 
    211 	if ((dom = pffinddomain(sa->sa_family)) == NULL ||
    212 	    dom->dom_sockaddr_addr == NULL)
    213 		return NULL;
    214 
    215 	return (*dom->dom_sockaddr_addr)(sa, slenp);
    216 }
    217 
    218 const void *
    219 sockaddr_const_addr(const struct sockaddr *sa, socklen_t *slenp)
    220 {
    221 	const struct domain *dom;
    222 
    223 	if ((dom = pffinddomain(sa->sa_family)) == NULL ||
    224 	    dom->dom_sockaddr_const_addr == NULL)
    225 		return NULL;
    226 
    227 	return (*dom->dom_sockaddr_const_addr)(sa, slenp);
    228 }
    229 
    230 const struct sockaddr *
    231 sockaddr_any_by_family(sa_family_t family)
    232 {
    233 	const struct domain *dom;
    234 
    235 	if ((dom = pffinddomain(family)) == NULL)
    236 		return NULL;
    237 
    238 	return dom->dom_sa_any;
    239 }
    240 
    241 const struct sockaddr *
    242 sockaddr_any(const struct sockaddr *sa)
    243 {
    244 	return sockaddr_any_by_family(sa->sa_family);
    245 }
    246 
    247 const void *
    248 sockaddr_anyaddr(const struct sockaddr *sa, socklen_t *slenp)
    249 {
    250 	const struct sockaddr *any;
    251 
    252 	if ((any = sockaddr_any(sa)) == NULL)
    253 		return NULL;
    254 
    255 	return sockaddr_const_addr(any, slenp);
    256 }
    257 
    258 socklen_t
    259 sockaddr_getsize_by_family(sa_family_t af)
    260 {
    261 	switch (af) {
    262 	case AF_INET:
    263 		return sizeof(struct sockaddr_in);
    264 	case AF_INET6:
    265 		return sizeof(struct sockaddr_in6);
    266 	case AF_UNIX:
    267 		return sizeof(struct sockaddr_un);
    268 	case AF_LINK:
    269 		return sizeof(struct sockaddr_dl);
    270 	case AF_APPLETALK:
    271 		return sizeof(struct sockaddr_at);
    272 	default:
    273 #ifdef DIAGNOSTIC
    274 		printf("%s: Unhandled address family=%hhu\n", __func__, af);
    275 #endif
    276 		return 0;
    277 	}
    278 }
    279 
    280 #ifdef DIAGNOSTIC
    281 static void
    282 sockaddr_checklen(const struct sockaddr *sa)
    283 {
    284 	socklen_t len = sockaddr_getsize_by_family(sa->sa_family);
    285 	if (len == 0 || len == sa->sa_len)
    286 		return;
    287 
    288 	char buf[512];
    289 	sockaddr_format(sa, buf, sizeof(buf));
    290 	printf("%s: %p bad len af=%hhu socklen=%hhu len=%u [%s]\n",
    291 	    __func__, sa, sa->sa_family, sa->sa_len, (unsigned)len, buf);
    292 }
    293 #else
    294 #define sockaddr_checklen(sa) ((void)0)
    295 #endif
    296 
    297 struct sockaddr *
    298 sockaddr_alloc(sa_family_t af, socklen_t socklen, int flags)
    299 {
    300 	struct sockaddr *sa;
    301 	socklen_t reallen = MAX(socklen, offsetof(struct sockaddr, sa_data[0]));
    302 
    303 	if ((sa = malloc(reallen, M_SOCKADDR, flags)) == NULL)
    304 		return NULL;
    305 
    306 	sa->sa_family = af;
    307 	sa->sa_len = reallen;
    308 	sockaddr_checklen(sa);
    309 	return sa;
    310 }
    311 
    312 struct sockaddr *
    313 sockaddr_copy(struct sockaddr *dst, socklen_t socklen,
    314     const struct sockaddr *src)
    315 {
    316 	if (__predict_false(socklen < src->sa_len)) {
    317 		panic("%s: source too long, %d < %d bytes", __func__, socklen,
    318 		    src->sa_len);
    319 	}
    320 	sockaddr_checklen(src);
    321 	return memcpy(dst, src, src->sa_len);
    322 }
    323 
    324 struct sockaddr *
    325 sockaddr_externalize(struct sockaddr *dst, socklen_t socklen,
    326     const struct sockaddr *src)
    327 {
    328 	struct domain *dom;
    329 
    330 	dom = pffinddomain(src->sa_family);
    331 
    332 	if (dom != NULL && dom->dom_sockaddr_externalize != NULL)
    333 		return (*dom->dom_sockaddr_externalize)(dst, socklen, src);
    334 
    335 	return sockaddr_copy(dst, socklen, src);
    336 }
    337 
    338 int
    339 sockaddr_cmp(const struct sockaddr *sa1, const struct sockaddr *sa2)
    340 {
    341 	int len, rc;
    342 	struct domain *dom;
    343 
    344 	if (sa1->sa_family != sa2->sa_family)
    345 		return sa1->sa_family - sa2->sa_family;
    346 
    347 	dom = pffinddomain(sa1->sa_family);
    348 
    349 	if (dom != NULL && dom->dom_sockaddr_cmp != NULL)
    350 		return (*dom->dom_sockaddr_cmp)(sa1, sa2);
    351 
    352 	len = MIN(sa1->sa_len, sa2->sa_len);
    353 
    354 	if (dom == NULL || dom->dom_sa_cmplen == 0) {
    355 		if ((rc = memcmp(sa1, sa2, len)) != 0)
    356 			return rc;
    357 		return sa1->sa_len - sa2->sa_len;
    358 	}
    359 
    360 	if ((rc = memcmp((const char *)sa1 + dom->dom_sa_cmpofs,
    361 		         (const char *)sa2 + dom->dom_sa_cmpofs,
    362 			 MIN(dom->dom_sa_cmplen,
    363 			     len - MIN(len, dom->dom_sa_cmpofs)))) != 0)
    364 		return rc;
    365 
    366 	return MIN(dom->dom_sa_cmplen + dom->dom_sa_cmpofs, sa1->sa_len) -
    367 	       MIN(dom->dom_sa_cmplen + dom->dom_sa_cmpofs, sa2->sa_len);
    368 }
    369 
    370 struct sockaddr *
    371 sockaddr_dup(const struct sockaddr *src, int flags)
    372 {
    373 	struct sockaddr *dst;
    374 
    375 	if ((dst = sockaddr_alloc(src->sa_family, src->sa_len, flags)) == NULL)
    376 		return NULL;
    377 
    378 	return sockaddr_copy(dst, dst->sa_len, src);
    379 }
    380 
    381 void
    382 sockaddr_free(struct sockaddr *sa)
    383 {
    384 	free(sa, M_SOCKADDR);
    385 }
    386 
    387 static int
    388 sun_print(char *buf, size_t len, const void *v)
    389 {
    390 	const struct sockaddr_un *sun = v;
    391 	return snprintf(buf, len, "%s", sun->sun_path);
    392 }
    393 
    394 int
    395 sockaddr_format(const struct sockaddr *sa, char *buf, size_t len)
    396 {
    397 	size_t plen = 0;
    398 
    399 	if (sa == NULL)
    400 		return strlcpy(buf, "(null)", len);
    401 
    402 	switch (sa->sa_family) {
    403 	case AF_LOCAL:
    404 		plen = strlcpy(buf, "unix: ", len);
    405 		break;
    406 	case AF_INET:
    407 		plen = strlcpy(buf, "inet: ", len);
    408 		break;
    409 	case AF_INET6:
    410 		plen = strlcpy(buf, "inet6: ", len);
    411 		break;
    412 	case AF_LINK:
    413 		plen = strlcpy(buf, "link: ", len);
    414 		break;
    415 	case AF_APPLETALK:
    416 		plen = strlcpy(buf, "atalk: ", len);
    417 		break;
    418 	default:
    419 		return snprintf(buf, len, "(unknown socket family %d)",
    420 		    (int)sa->sa_family);
    421 	}
    422 
    423 	buf += plen;
    424 	if (plen > len)
    425 		len = 0;
    426 	else
    427 		len -= plen;
    428 
    429 	switch (sa->sa_family) {
    430 	case AF_LOCAL:
    431 		return sun_print(buf, len, sa);
    432 	case AF_INET:
    433 		return sin_print(buf, len, sa);
    434 	case AF_INET6:
    435 		return sin6_print(buf, len, sa);
    436 	case AF_LINK:
    437 		return sdl_print(buf, len, sa);
    438 	case AF_APPLETALK:
    439 		return sat_print(buf, len, sa);
    440 	default:
    441 		panic("bad family %hhu", sa->sa_family);
    442 	}
    443 }
    444 
    445 /*
    446  * sysctl helper to stuff PF_LOCAL pcbs into sysctl structures
    447  */
    448 static void
    449 sysctl_dounpcb(struct kinfo_pcb *pcb, const struct socket *so)
    450 {
    451 	struct unpcb *unp = sotounpcb(so);
    452 	struct sockaddr_un *un = unp->unp_addr;
    453 
    454 	memset(pcb, 0, sizeof(*pcb));
    455 
    456 	pcb->ki_family = so->so_proto->pr_domain->dom_family;
    457 	pcb->ki_type = so->so_proto->pr_type;
    458 	pcb->ki_protocol = so->so_proto->pr_protocol;
    459 	pcb->ki_pflags = unp->unp_flags;
    460 
    461 	pcb->ki_pcbaddr = PTRTOUINT64(unp);
    462 	/* pcb->ki_ppcbaddr = unp has no ppcb... */
    463 	pcb->ki_sockaddr = PTRTOUINT64(so);
    464 
    465 	pcb->ki_sostate = so->so_state;
    466 	/* pcb->ki_prstate = unp has no state... */
    467 
    468 	pcb->ki_rcvq = so->so_rcv.sb_cc;
    469 	pcb->ki_sndq = so->so_snd.sb_cc;
    470 
    471 	un = (struct sockaddr_un *)pcb->ki_spad;
    472 	/*
    473 	 * local domain sockets may bind without having a local
    474 	 * endpoint.  bleah!
    475 	 */
    476 	if (unp->unp_addr != NULL) {
    477 		/*
    478 		 * We've added one to sun_len when allocating to
    479 		 * hold terminating NUL which we want here.  See
    480 		 * makeun().
    481 		 */
    482 		memcpy(un, unp->unp_addr,
    483 		    min(sizeof(pcb->ki_spad), unp->unp_addr->sun_len + 1));
    484 	}
    485 	else {
    486 		un->sun_len = offsetof(struct sockaddr_un, sun_path);
    487 		un->sun_family = pcb->ki_family;
    488 	}
    489 	if (unp->unp_conn != NULL) {
    490 		un = (struct sockaddr_un *)pcb->ki_dpad;
    491 		if (unp->unp_conn->unp_addr != NULL) {
    492 			memcpy(un, unp->unp_conn->unp_addr,
    493 			    min(sizeof(pcb->ki_dpad), unp->unp_conn->unp_addr->sun_len + 1));
    494 		}
    495 		else {
    496 			un->sun_len = offsetof(struct sockaddr_un, sun_path);
    497 			un->sun_family = pcb->ki_family;
    498 		}
    499 	}
    500 
    501 	pcb->ki_inode = unp->unp_ino;
    502 	pcb->ki_vnode = PTRTOUINT64(unp->unp_vnode);
    503 	pcb->ki_conn = PTRTOUINT64(unp->unp_conn);
    504 	pcb->ki_refs = PTRTOUINT64(unp->unp_refs);
    505 	pcb->ki_nextref = PTRTOUINT64(unp->unp_nextref);
    506 }
    507 
    508 static int
    509 sysctl_unpcblist(SYSCTLFN_ARGS)
    510 {
    511 	struct file *fp, *dfp;
    512 	struct socket *so;
    513 	struct kinfo_pcb pcb;
    514 	char *dp;
    515 	size_t len, needed, elem_size, out_size;
    516 	int error, elem_count, pf, type;
    517 
    518 	if (namelen == 1 && name[0] == CTL_QUERY)
    519 		return sysctl_query(SYSCTLFN_CALL(rnode));
    520 
    521 	if (namelen != 4)
    522 		return EINVAL;
    523 
    524 	if (oldp != NULL) {
    525 		len = *oldlenp;
    526 		elem_size = name[2];
    527 		elem_count = name[3];
    528 		if (elem_size != sizeof(pcb))
    529 			return EINVAL;
    530 	} else {
    531 		len = 0;
    532 		elem_size = sizeof(pcb);
    533 		elem_count = INT_MAX;
    534 	}
    535 	error = 0;
    536 	dp = oldp;
    537 	out_size = elem_size;
    538 	needed = 0;
    539 
    540 	if (name - oname != 4)
    541 		return EINVAL;
    542 
    543 	pf = oname[1];
    544 	type = oname[2];
    545 
    546 	/*
    547 	 * allocate dummy file descriptor to make position in list.
    548 	 */
    549 	sysctl_unlock();
    550 	if ((dfp = fgetdummy()) == NULL) {
    551 	 	sysctl_relock();
    552 		return ENOMEM;
    553 	}
    554 
    555 	/*
    556 	 * there's no "list" of local domain sockets, so we have
    557 	 * to walk the file list looking for them.  :-/
    558 	 */
    559 	mutex_enter(&filelist_lock);
    560 	LIST_FOREACH(fp, &filehead, f_list) {
    561 		if (fp->f_count == 0 || fp->f_type != DTYPE_SOCKET ||
    562 		    fp->f_socket == NULL)
    563 			continue;
    564 		so = fp->f_socket;
    565 		if (so->so_type != type)
    566 			continue;
    567 		if (so->so_proto->pr_domain->dom_family != pf)
    568 			continue;
    569 		if (kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET,
    570 		    KAUTH_REQ_NETWORK_SOCKET_CANSEE, so, NULL, NULL) != 0)
    571 			continue;
    572 		if (len >= elem_size && elem_count > 0) {
    573 			mutex_enter(&fp->f_lock);
    574 			fp->f_count++;
    575 			mutex_exit(&fp->f_lock);
    576 			LIST_INSERT_AFTER(fp, dfp, f_list);
    577 			mutex_exit(&filelist_lock);
    578 			sysctl_dounpcb(&pcb, so);
    579 			error = copyout(&pcb, dp, out_size);
    580 			closef(fp);
    581 			mutex_enter(&filelist_lock);
    582 			LIST_REMOVE(dfp, f_list);
    583 			if (error)
    584 				break;
    585 			dp += elem_size;
    586 			len -= elem_size;
    587 		}
    588 		needed += elem_size;
    589 		if (elem_count > 0 && elem_count != INT_MAX)
    590 			elem_count--;
    591 	}
    592 	mutex_exit(&filelist_lock);
    593 	fputdummy(dfp);
    594  	*oldlenp = needed;
    595 	if (oldp == NULL)
    596 		*oldlenp += PCB_SLOP * sizeof(struct kinfo_pcb);
    597  	sysctl_relock();
    598 
    599 	return error;
    600 }
    601 
    602 static void
    603 sysctl_net_setup(void)
    604 {
    605 
    606 	KASSERT(domain_sysctllog == NULL);
    607 	sysctl_createv(&domain_sysctllog, 0, NULL, NULL,
    608 		       CTLFLAG_PERMANENT,
    609 		       CTLTYPE_NODE, "local",
    610 		       SYSCTL_DESCR("PF_LOCAL related settings"),
    611 		       NULL, 0, NULL, 0,
    612 		       CTL_NET, PF_LOCAL, CTL_EOL);
    613 	sysctl_createv(&domain_sysctllog, 0, NULL, NULL,
    614 		       CTLFLAG_PERMANENT,
    615 		       CTLTYPE_NODE, "stream",
    616 		       SYSCTL_DESCR("SOCK_STREAM settings"),
    617 		       NULL, 0, NULL, 0,
    618 		       CTL_NET, PF_LOCAL, SOCK_STREAM, CTL_EOL);
    619 	sysctl_createv(&domain_sysctllog, 0, NULL, NULL,
    620 		       CTLFLAG_PERMANENT,
    621 		       CTLTYPE_NODE, "seqpacket",
    622 		       SYSCTL_DESCR("SOCK_SEQPACKET settings"),
    623 		       NULL, 0, NULL, 0,
    624 		       CTL_NET, PF_LOCAL, SOCK_SEQPACKET, CTL_EOL);
    625 	sysctl_createv(&domain_sysctllog, 0, NULL, NULL,
    626 		       CTLFLAG_PERMANENT,
    627 		       CTLTYPE_NODE, "dgram",
    628 		       SYSCTL_DESCR("SOCK_DGRAM settings"),
    629 		       NULL, 0, NULL, 0,
    630 		       CTL_NET, PF_LOCAL, SOCK_DGRAM, CTL_EOL);
    631 
    632 	sysctl_createv(&domain_sysctllog, 0, NULL, NULL,
    633 		       CTLFLAG_PERMANENT,
    634 		       CTLTYPE_STRUCT, "pcblist",
    635 		       SYSCTL_DESCR("SOCK_STREAM protocol control block list"),
    636 		       sysctl_unpcblist, 0, NULL, 0,
    637 		       CTL_NET, PF_LOCAL, SOCK_STREAM, CTL_CREATE, CTL_EOL);
    638 	sysctl_createv(&domain_sysctllog, 0, NULL, NULL,
    639 		       CTLFLAG_PERMANENT,
    640 		       CTLTYPE_STRUCT, "pcblist",
    641 		       SYSCTL_DESCR("SOCK_SEQPACKET protocol control "
    642 				    "block list"),
    643 		       sysctl_unpcblist, 0, NULL, 0,
    644 		       CTL_NET, PF_LOCAL, SOCK_SEQPACKET, CTL_CREATE, CTL_EOL);
    645 	sysctl_createv(&domain_sysctllog, 0, NULL, NULL,
    646 		       CTLFLAG_PERMANENT,
    647 		       CTLTYPE_STRUCT, "pcblist",
    648 		       SYSCTL_DESCR("SOCK_DGRAM protocol control block list"),
    649 		       sysctl_unpcblist, 0, NULL, 0,
    650 		       CTL_NET, PF_LOCAL, SOCK_DGRAM, CTL_CREATE, CTL_EOL);
    651 }
    652 
    653 void
    654 pfctlinput(int cmd, const struct sockaddr *sa)
    655 {
    656 	struct domain *dp;
    657 	const struct protosw *pr;
    658 
    659 	DOMAIN_FOREACH(dp) {
    660 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
    661 			if (pr->pr_ctlinput != NULL)
    662 				(*pr->pr_ctlinput)(cmd, sa, NULL);
    663 		}
    664 	}
    665 }
    666 
    667 void
    668 pfctlinput2(int cmd, const struct sockaddr *sa, void *ctlparam)
    669 {
    670 	struct domain *dp;
    671 	const struct protosw *pr;
    672 
    673 	if (sa == NULL)
    674 		return;
    675 
    676 	DOMAIN_FOREACH(dp) {
    677 		/*
    678 		 * the check must be made by xx_ctlinput() anyways, to
    679 		 * make sure we use data item pointed to by ctlparam in
    680 		 * correct way.  the following check is made just for safety.
    681 		 */
    682 		if (dp->dom_family != sa->sa_family)
    683 			continue;
    684 
    685 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
    686 			if (pr->pr_ctlinput != NULL)
    687 				(*pr->pr_ctlinput)(cmd, sa, ctlparam);
    688 		}
    689 	}
    690 }
    691 
    692 void
    693 pfslowtimo(void *arg)
    694 {
    695 	struct domain *dp;
    696 	const struct protosw *pr;
    697 
    698 	pfslowtimo_now++;
    699 
    700 	DOMAIN_FOREACH(dp) {
    701 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    702 			if (pr->pr_slowtimo)
    703 				(*pr->pr_slowtimo)();
    704 	}
    705 	callout_schedule(&pfslowtimo_ch, hz / PR_SLOWHZ);
    706 }
    707 
    708 void
    709 pffasttimo(void *arg)
    710 {
    711 	struct domain *dp;
    712 	const struct protosw *pr;
    713 
    714 	pffasttimo_now++;
    715 
    716 	DOMAIN_FOREACH(dp) {
    717 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    718 			if (pr->pr_fasttimo)
    719 				(*pr->pr_fasttimo)();
    720 	}
    721 	callout_schedule(&pffasttimo_ch, hz / PR_FASTHZ);
    722 }
    723