/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2013 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
-/* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
* Copyright (c) 1982, 1986, 1993
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/domain.h>
+#include <sys/mcache.h>
#include <sys/mbuf.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/systm.h>
-#include <sys/proc.h>
+#include <sys/proc_internal.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <sys/queue.h>
-void pffasttimo __P((void *));
-void pfslowtimo __P((void *));
+#include <net/dlil.h>
-/*
- * Add/delete 'domain': Link structure into system list,
- * invoke the domain init, and then the proto inits.
- * To delete, just remove from the list (dom_refs must be zero)
- */
+#include <mach/boolean.h>
+#include <pexpert/pexpert.h>
+
+static void pr_init_old(struct protosw *, struct domain *);
+static void init_proto(struct protosw *, struct domain *);
+static void attach_proto(struct protosw *, struct domain *);
+static void detach_proto(struct protosw *, struct domain *);
+static void dom_init_old(struct domain *);
+static void init_domain(struct domain *);
+static void attach_domain(struct domain *);
+static void detach_domain(struct domain *);
+static struct protosw *pffindprotonotype_locked(int, int, int);
+static struct domain *pffinddomain_locked(int);
+
+static boolean_t domain_timeout_run; /* domain timer is scheduled to run */
+static boolean_t domain_draining;
+static void domain_sched_timeout(void);
+static void domain_timeout(void *);
+
+lck_grp_t *domain_proto_mtx_grp;
+lck_attr_t *domain_proto_mtx_attr;
+static lck_grp_attr_t *domain_proto_mtx_grp_attr;
+decl_lck_mtx_data(static, domain_proto_mtx);
+decl_lck_mtx_data(static, domain_timeout_mtx);
+
+static u_int64_t _net_uptime;
+#if (DEVELOPMENT || DEBUG)
-void init_domain(register struct domain *dp)
+SYSCTL_DECL(_kern_ipc);
+
+static int sysctl_do_drain_domains SYSCTL_HANDLER_ARGS;
+
+SYSCTL_PROC(_kern_ipc, OID_AUTO, do_drain_domains,
+ CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_LOCKED,
+ 0, 0,
+ sysctl_do_drain_domains, "I", "force manual drain domains");
+
+#endif /* DEVELOPMENT || DEBUG */
+
+static void
+pr_init_old(struct protosw *pp, struct domain *dp)
{
- struct protosw *pr;
-
- if (dp->dom_init)
- (*dp->dom_init)();
+#pragma unused(dp)
+ VERIFY(pp->pr_flags & PR_OLD);
+ VERIFY(pp->pr_old != NULL);
- /* and then init the currently installed protos in this domain */
+ if (pp->pr_old->pr_init != NULL)
+ pp->pr_old->pr_init();
+}
- for (pr = dp->dom_protosw; pr; pr = pr->pr_next) {
- if (pr->pr_usrreqs == 0)
- panic("domaininit: %ssw[%d] has no usrreqs!",
- dp->dom_name,
- (int)(pr - dp->dom_protosw));
+static void
+init_proto(struct protosw *pp, struct domain *dp)
+{
+ VERIFY(pp->pr_flags & PR_ATTACHED);
- if (pr->pr_init)
- (*pr->pr_init)();
+ if (!(pp->pr_flags & PR_INITIALIZED)) {
+ TAILQ_INIT(&pp->pr_filter_head);
+ if (pp->pr_init != NULL)
+ pp->pr_init(pp, dp);
+ pp->pr_flags |= PR_INITIALIZED;
+ }
+}
+
+static void
+attach_proto(struct protosw *pp, struct domain *dp)
+{
+ domain_proto_mtx_lock_assert_held();
+ VERIFY(!(pp->pr_flags & PR_ATTACHED));
+ VERIFY(pp->pr_domain == NULL);
+ VERIFY(pp->pr_protosw == NULL);
+
+ TAILQ_INSERT_TAIL(&dp->dom_protosw, pp, pr_entry);
+ pp->pr_flags |= PR_ATTACHED;
+ pp->pr_domain = dp;
+ pp->pr_protosw = pp;
+
+ /* do some cleaning up on user request callbacks */
+ pru_sanitize(pp->pr_usrreqs);
+}
+
+static void
+detach_proto(struct protosw *pp, struct domain *dp)
+{
+ domain_proto_mtx_lock_assert_held();
+ VERIFY(pp->pr_flags & PR_ATTACHED);
+ VERIFY(pp->pr_domain == dp);
+ VERIFY(pp->pr_protosw == pp);
+
+ TAILQ_REMOVE(&dp->dom_protosw, pp, pr_entry);
+ pp->pr_flags &= ~PR_ATTACHED;
+ pp->pr_domain = NULL;
+ pp->pr_protosw = NULL;
+}
+
+static void
+dom_init_old(struct domain *dp)
+{
+ VERIFY(dp->dom_flags & DOM_OLD);
+ VERIFY(dp->dom_old != NULL);
+
+ if (dp->dom_old->dom_init != NULL)
+ dp->dom_old->dom_init();
+}
+
+static void
+init_domain(struct domain *dp)
+{
+ VERIFY(dp->dom_flags & DOM_ATTACHED);
+
+ if (!(dp->dom_flags & DOM_INITIALIZED)) {
+ lck_mtx_init(&dp->dom_mtx_s, domain_proto_mtx_grp,
+ domain_proto_mtx_attr);
+ dp->dom_mtx = &dp->dom_mtx_s;
+ TAILQ_INIT(&dp->dom_protosw);
+ if (dp->dom_init != NULL)
+ dp->dom_init(dp);
+ dp->dom_flags |= DOM_INITIALIZED;
}
/* Recompute for new protocol */
- if (max_linkhdr < 16) /* XXX - Sheesh; everything's ether? */
- max_linkhdr = 16;
- if (dp->dom_protohdrlen > max_protohdr)
- max_protohdr = dp->dom_protohdrlen;
+ if (_max_linkhdr < 16) /* XXX - Sheesh; everything's ether? */
+ _max_linkhdr = 16;
+ _max_linkhdr = max_linkhdr; /* round it up */
+
+ if (dp->dom_protohdrlen > _max_protohdr)
+ _max_protohdr = dp->dom_protohdrlen;
+ _max_protohdr = max_protohdr; /* round it up */
+
max_hdr = max_linkhdr + max_protohdr;
max_datalen = MHLEN - max_hdr;
}
-void concat_domain(struct domain *dp)
+static void
+attach_domain(struct domain *dp)
+{
+ domain_proto_mtx_lock_assert_held();
+ VERIFY(!(dp->dom_flags & DOM_ATTACHED));
+
+ TAILQ_INSERT_TAIL(&domains, dp, dom_entry);
+ dp->dom_flags |= DOM_ATTACHED;
+}
+
+static void
+detach_domain(struct domain *dp)
{
- dp->dom_next = domains;
- domains = dp;
+ domain_proto_mtx_lock_assert_held();
+ VERIFY(dp->dom_flags & DOM_ATTACHED);
+
+ TAILQ_REMOVE(&domains, dp, dom_entry);
+ dp->dom_flags &= ~DOM_ATTACHED;
+
+ if (dp->dom_flags & DOM_OLD) {
+ struct domain_old *odp = dp->dom_old;
+
+ VERIFY(odp != NULL);
+ odp->dom_next = NULL;
+ odp->dom_mtx = NULL;
+ }
}
+/*
+ * Exported (private) routine, indirection of net_add_domain.
+ */
void
-net_add_domain(register struct domain *dp)
-{ register struct protosw *pr;
- register int s;
- extern int splhigh(void);
- extern int splx(int);
+net_add_domain_old(struct domain_old *odp)
+{
+ struct domain *dp;
+ domain_guard_t guard;
+
+ VERIFY(odp != NULL);
- kprintf("Adding domain %s (family %d)\n", dp->dom_name,
- dp->dom_family);
- /* First, link in the domain */
- s = splhigh();
+ guard = domain_guard_deploy();
+ if ((dp = pffinddomain_locked(odp->dom_family)) != NULL) {
+ /*
+ * There is really nothing better than to panic here,
+ * as the caller would not have been able to handle
+ * any failures otherwise.
+ */
+ panic("%s: domain (%d,%s) already exists for %s\n", __func__,
+ dp->dom_family, dp->dom_name, odp->dom_name);
+ /* NOTREACHED */
+ }
+
+ /* Make sure nothing is currently pointing to the odp. */
+ TAILQ_FOREACH(dp, &domains, dom_entry) {
+ if (dp->dom_old == odp) {
+ panic("%s: domain %p (%d,%s) is already "
+ "associated with %p (%d,%s)\n", __func__,
+ odp, odp->dom_family, odp->dom_name, dp,
+ dp->dom_family, dp->dom_name);
+ /* NOTREACHED */
+ }
+ }
+
+ if (odp->dom_protosw != NULL) {
+ panic("%s: domain (%d,%s) protocols need to added "
+ "via net_add_proto\n", __func__, odp->dom_family,
+ odp->dom_name);
+ /* NOTREACHED */
+ }
+
+ dp = _MALLOC(sizeof (*dp), M_TEMP, M_WAITOK | M_ZERO);
+ if (dp == NULL) {
+ /*
+ * There is really nothing better than to panic here,
+ * as the caller would not have been able to handle
+ * any failures otherwise.
+ */
+ panic("%s: unable to allocate memory for domain family "
+ "%d (%s)\n", __func__, odp->dom_family, odp->dom_name);
+ /* NOTREACHED */
+ }
- concat_domain(dp);
+ /* Copy everything but dom_init, dom_mtx, dom_next and dom_refs */
+ dp->dom_family = odp->dom_family;
+ dp->dom_flags = (odp->dom_flags & DOMF_USERFLAGS) | DOM_OLD;
+ dp->dom_name = odp->dom_name;
+ dp->dom_init = dom_init_old;
+ dp->dom_externalize = odp->dom_externalize;
+ dp->dom_dispose = odp->dom_dispose;
+ dp->dom_rtattach = odp->dom_rtattach;
+ dp->dom_rtoffset = odp->dom_rtoffset;
+ dp->dom_maxrtkey = odp->dom_maxrtkey;
+ dp->dom_protohdrlen = odp->dom_protohdrlen;
+ dp->dom_old = odp;
+ attach_domain(dp);
init_domain(dp);
- splx(s);
+ /* Point the mutex back to the internal structure's */
+ odp->dom_mtx = dp->dom_mtx;
+ domain_guard_release(guard);
}
+/*
+ * Exported (private) routine, indirection of net_del_domain.
+ */
int
-net_del_domain(register struct domain *dp)
-{ register struct domain *dp1, *dp2;
- register int s, retval = 0;
- extern int splhigh(void);
- extern int splx(int);
-
- if (dp->dom_refs)
- return(EBUSY);
+net_del_domain_old(struct domain_old *odp)
+{
+ struct domain *dp1, *dp2;
+ int error = 0;
+ domain_guard_t guard;
- s = splhigh();
+ VERIFY(odp != NULL);
- for (dp2 = NULL, dp1 = domains; dp1; dp2 = dp1, dp1 = dp1->dom_next)
- { if (dp == dp1)
+ guard = domain_guard_deploy();
+ if (odp->dom_refs != 0) {
+ error = EBUSY;
+ goto done;
+ }
+
+ TAILQ_FOREACH_SAFE(dp1, &domains, dom_entry, dp2) {
+ if (!(dp1->dom_flags & DOM_OLD))
+ continue;
+ VERIFY(dp1->dom_old != NULL);
+ if (odp == dp1->dom_old)
break;
}
- if (dp1)
- { if (dp2)
- dp2->dom_next = dp1->dom_next;
- else
- domains = dp1->dom_next;
- } else
- retval = EPFNOSUPPORT;
- splx(s);
+ if (dp1 != NULL) {
+ struct protosw *pp1, *pp2;
+
+ VERIFY(dp1->dom_flags & DOM_OLD);
+ VERIFY(dp1->dom_old == odp);
- return(retval);
+ /* Remove all protocols attached to this domain */
+ TAILQ_FOREACH_SAFE(pp1, &dp1->dom_protosw, pr_entry, pp2) {
+ detach_proto(pp1, dp1);
+ if (pp1->pr_usrreqs->pru_flags & PRUF_OLD)
+ FREE(pp1->pr_usrreqs, M_TEMP);
+ if (pp1->pr_flags & PR_OLD)
+ FREE(pp1, M_TEMP);
+ }
+
+ detach_domain(dp1);
+ FREE(dp1, M_TEMP);
+ } else {
+ error = EPFNOSUPPORT;
+ }
+done:
+ domain_guard_release(guard);
+ return (error);
}
/*
+ * Internal routine, not exported.
+ *
* net_add_proto - link a protosw into a domain's protosw chain
+ *
+ * NOTE: Caller must have acquired domain_proto_mtx
*/
int
-net_add_proto(register struct protosw *pp,
- register struct domain *dp)
-{ register struct protosw *pp1, *pp2;
- register int s;
- extern int splhigh(void);
- extern int splx(int);
-
- s = splhigh();
- for (pp2 = NULL, pp1 = dp->dom_protosw; pp1; pp1 = pp1->pr_next)
- { if (pp1->pr_type == pp->pr_type &&
- pp1->pr_protocol == pp->pr_protocol) {
- splx(s);
- return(EEXIST);
+net_add_proto(struct protosw *pp, struct domain *dp, int doinit)
+{
+ struct protosw *pp1;
+
+ /*
+ * This could be called as part of initializing the domain,
+ * and thus DOM_INITIALIZED may not be set (yet).
+ */
+ domain_proto_mtx_lock_assert_held();
+ VERIFY(!(pp->pr_flags & PR_ATTACHED));
+
+ /* pr_domain is set only after the protocol is attached */
+ if (pp->pr_domain != NULL) {
+ panic("%s: domain (%d,%s), proto %d has non-NULL pr_domain!\n",
+ __func__, dp->dom_family, dp->dom_name, pp->pr_protocol);
+ /* NOTREACHED */
+ }
+
+ if (pp->pr_usrreqs == NULL) {
+ panic("%s: domain (%d,%s), proto %d has no usrreqs!\n",
+ __func__, dp->dom_family, dp->dom_name, pp->pr_protocol);
+ /* NOTREACHED */
+ }
+
+ TAILQ_FOREACH(pp1, &dp->dom_protosw, pr_entry) {
+ if (pp1->pr_type == pp->pr_type &&
+ pp1->pr_protocol == pp->pr_protocol)
+ return (EEXIST);
+ }
+
+ attach_proto(pp, dp);
+ if (doinit)
+ net_init_proto(pp, dp);
+
+ return (0);
+}
+
+void
+net_init_proto(struct protosw *pp, struct domain *dp)
+{
+ /*
+ * This could be called as part of initializing the domain,
+ * and thus DOM_INITIALIZED may not be set (yet). The protocol
+ * must have been attached via net_addr_protosw() by now.
+ */
+ domain_proto_mtx_lock_assert_held();
+ VERIFY(pp->pr_flags & PR_ATTACHED);
+
+ init_proto(pp, dp);
+}
+
+/*
+ * Exported (private) routine, indirection of net_add_proto.
+ */
+int
+net_add_proto_old(struct protosw_old *opp, struct domain_old *odp)
+{
+ struct pr_usrreqs_old *opru;
+ struct pr_usrreqs *pru = NULL;
+ struct protosw *pp = NULL, *pp1;
+ int error = 0;
+ struct domain *dp;
+ domain_guard_t guard;
+
+ /*
+ * This could be called as part of initializing the domain,
+ * and thus DOM_INITIALIZED may not be set (yet).
+ */
+ guard = domain_guard_deploy();
+
+ /* Make sure the domain has been added via net_add_domain */
+ TAILQ_FOREACH(dp, &domains, dom_entry) {
+ if (!(dp->dom_flags & DOM_OLD))
+ continue;
+ if (dp->dom_old == odp)
+ break;
+ }
+ if (dp == NULL) {
+ error = EINVAL;
+ goto done;
+ }
+
+ TAILQ_FOREACH(pp1, &dp->dom_protosw, pr_entry) {
+ if (pp1->pr_type == opp->pr_type &&
+ pp1->pr_protocol == opp->pr_protocol) {
+ error = EEXIST;
+ goto done;
}
- pp2 = pp1;
}
- if (pp2 == NULL)
- dp->dom_protosw = pp;
- else
- pp2->pr_next = pp;
- pp->pr_next = NULL;
- TAILQ_INIT(&pp->pr_sfilter);
- if (pp->pr_init)
- (*pp->pr_init)();
- /* Make sure pr_init isn't called again!! */
- pp->pr_init = 0;
- splx(s);
- return(0);
+ if ((opru = opp->pr_usrreqs) == NULL) {
+ panic("%s: domain (%d,%s), proto %d has no usrreqs!\n",
+ __func__, odp->dom_family, odp->dom_name, opp->pr_protocol);
+ /* NOTREACHED */
+ }
+
+ pru = _MALLOC(sizeof (*pru), M_TEMP, M_WAITOK | M_ZERO);
+ if (pru == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+
+ pru->pru_flags = PRUF_OLD;
+ pru->pru_abort = opru->pru_abort;
+ pru->pru_accept = opru->pru_accept;
+ pru->pru_attach = opru->pru_attach;
+ pru->pru_bind = opru->pru_bind;
+ pru->pru_connect = opru->pru_connect;
+ pru->pru_connect2 = opru->pru_connect2;
+ pru->pru_control = opru->pru_control;
+ pru->pru_detach = opru->pru_detach;
+ pru->pru_disconnect = opru->pru_disconnect;
+ pru->pru_listen = opru->pru_listen;
+ pru->pru_peeraddr = opru->pru_peeraddr;
+ pru->pru_rcvd = opru->pru_rcvd;
+ pru->pru_rcvoob = opru->pru_rcvoob;
+ pru->pru_send = opru->pru_send;
+ pru->pru_sense = opru->pru_sense;
+ pru->pru_shutdown = opru->pru_shutdown;
+ pru->pru_sockaddr = opru->pru_sockaddr;
+ pru->pru_sosend = opru->pru_sosend;
+ pru->pru_soreceive = opru->pru_soreceive;
+ pru->pru_sopoll = opru->pru_sopoll;
+
+ pp = _MALLOC(sizeof (*pp), M_TEMP, M_WAITOK | M_ZERO);
+ if (pp == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+
+ /*
+ * Protocol fast and slow timers are now deprecated.
+ */
+ if (opp->pr_unused != NULL) {
+ printf("%s: domain (%d,%s), proto %d: pr_fasttimo is "
+ "deprecated and won't be called\n", __func__,
+ odp->dom_family, odp->dom_name, opp->pr_protocol);
+ }
+ if (opp->pr_unused2 != NULL) {
+ printf("%s: domain (%d,%s), proto %d: pr_slowtimo is "
+ "deprecated and won't be called\n", __func__,
+ odp->dom_family, odp->dom_name, opp->pr_protocol);
+ }
+
+ /* Copy everything but pr_init, pr_next, pr_domain, pr_protosw */
+ pp->pr_type = opp->pr_type;
+ pp->pr_protocol = opp->pr_protocol;
+ pp->pr_flags = (opp->pr_flags & PRF_USERFLAGS) | PR_OLD;
+ pp->pr_input = opp->pr_input;
+ pp->pr_output = opp->pr_output;
+ pp->pr_ctlinput = opp->pr_ctlinput;
+ pp->pr_ctloutput = opp->pr_ctloutput;
+ pp->pr_usrreqs = pru;
+ pp->pr_init = pr_init_old;
+ pp->pr_drain = opp->pr_drain;
+ pp->pr_sysctl = opp->pr_sysctl;
+ pp->pr_lock = opp->pr_lock;
+ pp->pr_unlock = opp->pr_unlock;
+ pp->pr_getlock = opp->pr_getlock;
+ pp->pr_old = opp;
+
+ /* attach as well as initialize */
+ attach_proto(pp, dp);
+ net_init_proto(pp, dp);
+done:
+ if (error != 0) {
+ printf("%s: domain (%d,%s), proto %d: failed to attach, "
+ "error %d\n", __func__, odp->dom_family,
+ odp->dom_name, opp->pr_protocol, error);
+
+ if (pru != NULL)
+ FREE(pru, M_TEMP);
+ if (pp != NULL)
+ FREE(pp, M_TEMP);
+ }
+
+ domain_guard_release(guard);
+ return (error);
}
/*
+ * Internal routine, not exported.
+ *
* net_del_proto - remove a protosw from a domain's protosw chain.
* Search the protosw chain for the element with matching data.
* Then unlink and return.
+ *
+ * NOTE: Caller must have acquired domain_proto_mtx
*/
int
-net_del_proto(register int type,
- register int protocol,
- register struct domain *dp)
-{ register struct protosw *pp1, *pp2;
- int s;
- extern int splhigh(void);
- extern int splx(int);
-
- s = splhigh();
- for (pp2 = NULL, pp1 = dp->dom_protosw; pp1; pp1 = pp1->pr_next)
- { if (pp1->pr_type == type &&
- pp1->pr_protocol == protocol)
+net_del_proto(int type, int protocol, struct domain *dp)
+{
+ struct protosw *pp;
+
+ /*
+ * This could be called as part of initializing the domain,
+ * and thus DOM_INITIALIZED may not be set (yet).
+ */
+ domain_proto_mtx_lock_assert_held();
+
+ TAILQ_FOREACH(pp, &dp->dom_protosw, pr_entry) {
+ if (pp->pr_type == type && pp->pr_protocol == protocol)
break;
- pp2 = pp1;
}
- if (pp1 == NULL) {
- splx(s);
- return(ENXIO);
- }
- if (pp2)
- pp2->pr_next = pp1->pr_next;
- else
- dp->dom_protosw = pp1->pr_next;
- splx(s);
- return(0);
+ if (pp == NULL)
+ return (ENXIO);
+
+ detach_proto(pp, dp);
+ if (pp->pr_usrreqs->pru_flags & PRUF_OLD)
+ FREE(pp->pr_usrreqs, M_TEMP);
+ if (pp->pr_flags & PR_OLD)
+ FREE(pp, M_TEMP);
+
+ return (0);
+}
+
+/*
+ * Exported (private) routine, indirection of net_del_proto.
+ */
+int
+net_del_proto_old(int type, int protocol, struct domain_old *odp)
+{
+ int error = 0;
+ struct protosw *pp;
+ struct domain *dp;
+ domain_guard_t guard;
+
+ /*
+ * This could be called as part of initializing the domain,
+ * and thus DOM_INITIALIZED may not be set (yet).
+ */
+ guard = domain_guard_deploy();
+
+ /* Make sure the domain has been added via net_add_domain */
+ TAILQ_FOREACH(dp, &domains, dom_entry) {
+ if (!(dp->dom_flags & DOM_OLD))
+ continue;
+ if (dp->dom_old == odp)
+ break;
+ }
+ if (dp == NULL) {
+ error = ENXIO;
+ goto done;
+ }
+
+ TAILQ_FOREACH(pp, &dp->dom_protosw, pr_entry) {
+ if (pp->pr_type == type && pp->pr_protocol == protocol)
+ break;
+ }
+ if (pp == NULL) {
+ error = ENXIO;
+ goto done;
+ }
+ detach_proto(pp, dp);
+ if (pp->pr_usrreqs->pru_flags & PRUF_OLD)
+ FREE(pp->pr_usrreqs, M_TEMP);
+ if (pp->pr_flags & PR_OLD)
+ FREE(pp, M_TEMP);
+
+done:
+ domain_guard_release(guard);
+ return (error);
}
+static void
+domain_sched_timeout(void)
+{
+ lck_mtx_assert(&domain_timeout_mtx, LCK_MTX_ASSERT_OWNED);
+
+ if (!domain_timeout_run && domain_draining) {
+ domain_timeout_run = TRUE;
+ timeout(domain_timeout, NULL, hz);
+ }
+}
void
-domaininit()
-{ register struct domain *dp;
- register struct protosw *pr;
- extern struct domain localdomain, routedomain, ndrvdomain, inetdomain;
- extern struct domain systemdomain;
-#if NS
- extern struct domain nsdomain;
-#endif
-#if ISO
- extern struct domain isodomain;
-#endif
-#if CCITT
- extern struct domain ccittdomain;
-#endif
+net_drain_domains(void)
+{
+ lck_mtx_lock(&domain_timeout_mtx);
+ domain_draining = TRUE;
+ domain_sched_timeout();
+ lck_mtx_unlock(&domain_timeout_mtx);
+}
-#if NETAT
- extern struct domain atalkdomain;
-#endif
#if INET6
- extern struct domain inet6domain;
+extern struct domain inet6domain_s;
#endif
#if IPSEC
- extern struct domain keydomain;
+extern struct domain keydomain_s;
#endif
+extern struct domain routedomain_s, ndrvdomain_s, inetdomain_s;
+extern struct domain systemdomain_s, localdomain_s;
+
+#if MULTIPATH
+extern struct domain mpdomain_s;
+#endif /* MULTIPATH */
+
+static void
+domain_timeout(void *arg)
+{
+#pragma unused(arg)
+ struct protosw *pp;
+ struct domain *dp;
+ domain_guard_t guard;
+
+ lck_mtx_lock(&domain_timeout_mtx);
+ if (domain_draining) {
+ domain_draining = FALSE;
+ lck_mtx_unlock(&domain_timeout_mtx);
+
+ guard = domain_guard_deploy();
+ TAILQ_FOREACH(dp, &domains, dom_entry) {
+ TAILQ_FOREACH(pp, &dp->dom_protosw, pr_entry) {
+ if (pp->pr_drain != NULL)
+ (*pp->pr_drain)();
+ }
+ }
+ domain_guard_release(guard);
+
+ lck_mtx_lock(&domain_timeout_mtx);
+ }
+
+ /* re-arm the timer if there's work to do */
+ domain_timeout_run = FALSE;
+ domain_sched_timeout();
+ lck_mtx_unlock(&domain_timeout_mtx);
+}
+
+void
+domaininit(void)
+{
+ struct domain *dp;
+ domain_guard_t guard;
+
/*
- * Add all the static domains to the domains list
+ * allocate lock group attribute and group for domain mutexes
*/
+ domain_proto_mtx_grp_attr = lck_grp_attr_alloc_init();
- thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
- concat_domain(&localdomain);
- concat_domain(&routedomain);
- concat_domain(&inetdomain);
-#if NETAT
- concat_domain(&atalkdomain);
-#endif
-#if INET6
- concat_domain(&inet6domain);
-#endif
-#if IPSEC
- concat_domain(&keydomain);
-#endif
+ domain_proto_mtx_grp = lck_grp_alloc_init("domain",
+ domain_proto_mtx_grp_attr);
-#if NS
- concat_domain(&nsdomain);
-#endif
-#if ISO
- concat_domain(&isodomain);
-#endif
-#if CCITT
- concat_domain(&ccittdomain);
-#endif
- concat_domain(&ndrvdomain);
+ /*
+ * allocate the lock attribute for per domain mutexes
+ */
+ domain_proto_mtx_attr = lck_attr_alloc_init();
- concat_domain(&systemdomain);
+ lck_mtx_init(&domain_proto_mtx, domain_proto_mtx_grp,
+ domain_proto_mtx_attr);
+ lck_mtx_init(&domain_timeout_mtx, domain_proto_mtx_grp,
+ domain_proto_mtx_attr);
+
+ guard = domain_guard_deploy();
+ /*
+ * Add all the static domains to the domains list. route domain
+ * gets added and initialized last, since we need it to attach
+ * rt_tables[] to everything that's already there. This also
+ * means that domains added after this point won't get their
+ * dom_rtattach() called on rt_tables[].
+ */
+ attach_domain(&inetdomain_s);
+#if INET6
+ attach_domain(&inet6domain_s);
+#endif /* INET6 */
+#if MULTIPATH
+ attach_domain(&mpdomain_s);
+#endif /* MULTIPATH */
+ attach_domain(&systemdomain_s);
+ attach_domain(&localdomain_s);
+#if IPSEC
+ attach_domain(&keydomain_s);
+#endif /* IPSEC */
+ attach_domain(&ndrvdomain_s);
+ attach_domain(&routedomain_s); /* must be last domain */
/*
* Now ask them all to init (XXX including the routing domain,
* see above)
*/
- for (dp = domains; dp; dp = dp->dom_next)
+ TAILQ_FOREACH(dp, &domains, dom_entry)
init_domain(dp);
- timeout(pffasttimo, NULL, 1);
- timeout(pfslowtimo, NULL, 1);
- thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
+ domain_guard_release(guard);
+}
+
+static __inline__ struct domain *
+pffinddomain_locked(int pf)
+{
+ struct domain *dp;
+
+ domain_proto_mtx_lock_assert_held();
+
+ TAILQ_FOREACH(dp, &domains, dom_entry) {
+ if (dp->dom_family == pf)
+ break;
+ }
+ return (dp);
}
struct protosw *
-pffindtype(family, type)
- int family, type;
+pffindtype(int family, int type)
{
- register struct domain *dp;
- register struct protosw *pr;
+ struct protosw *pp = NULL;
+ struct domain *dp;
+ domain_guard_t guard;
- for (dp = domains; dp; dp = dp->dom_next)
- if (dp->dom_family == family)
- goto found;
- return (0);
-found:
- for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
- if (pr->pr_type && pr->pr_type == type)
- return (pr);
- return (0);
+ guard = domain_guard_deploy();
+ if ((dp = pffinddomain_locked(family)) == NULL)
+ goto done;
+
+ TAILQ_FOREACH(pp, &dp->dom_protosw, pr_entry) {
+ if (pp->pr_type != 0 && pp->pr_type == type)
+ goto done;
+ }
+done:
+ domain_guard_release(guard);
+ return (pp);
}
+/*
+ * Internal routine, not exported.
+ */
struct domain *
pffinddomain(int pf)
-{ struct domain *dp;
+{
+ struct domain *dp;
+ domain_guard_t guard;
- dp = domains;
- while (dp)
- { if (dp->dom_family == pf)
- return(dp);
- dp = dp->dom_next;
- }
- return(NULL);
+ guard = domain_guard_deploy();
+ dp = pffinddomain_locked(pf);
+ domain_guard_release(guard);
+ return (dp);
}
+/*
+ * Exported (private) routine, indirection of pffinddomain.
+ */
+struct domain_old *
+pffinddomain_old(int pf)
+{
+ struct domain_old *odp = NULL;
+ struct domain *dp;
+ domain_guard_t guard;
+
+ guard = domain_guard_deploy();
+ if ((dp = pffinddomain_locked(pf)) != NULL && (dp->dom_flags & DOM_OLD))
+ odp = dp->dom_old;
+ domain_guard_release(guard);
+ return (odp);
+}
+
+/*
+ * Internal routine, not exported.
+ */
struct protosw *
-pffindproto(family, protocol, type)
- int family, protocol, type;
+pffindproto(int family, int protocol, int type)
{
- register struct domain *dp;
- register struct protosw *pr;
- struct protosw *maybe = 0;
+ struct protosw *pp;
+ domain_guard_t guard;
+
+ guard = domain_guard_deploy();
+ pp = pffindproto_locked(family, protocol, type);
+ domain_guard_release(guard);
+ return (pp);
+}
+
+struct protosw *
+pffindproto_locked(int family, int protocol, int type)
+{
+ struct protosw *maybe = NULL;
+ struct protosw *pp;
+ struct domain *dp;
+
+ domain_proto_mtx_lock_assert_held();
if (family == 0)
return (0);
- for (dp = domains; dp; dp = dp->dom_next)
- if (dp->dom_family == family)
- goto found;
- return (0);
-found:
- for (pr = dp->dom_protosw; pr; pr = pr->pr_next) {
- if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
- return (pr);
- if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
- pr->pr_protocol == 0 && maybe == (struct protosw *)0)
- maybe = pr;
+ dp = pffinddomain_locked(family);
+ if (dp == NULL)
+ return (NULL);
+
+ TAILQ_FOREACH(pp, &dp->dom_protosw, pr_entry) {
+ if ((pp->pr_protocol == protocol) && (pp->pr_type == type))
+ return (pp);
+
+ if (type == SOCK_RAW && pp->pr_type == SOCK_RAW &&
+ pp->pr_protocol == 0 && maybe == NULL)
+ maybe = pp;
}
return (maybe);
}
-int
-net_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
- int *name;
- u_int namelen;
- void *oldp;
- size_t *oldlenp;
- void *newp;
- size_t newlen;
- struct proc *p;
-{
- register struct domain *dp;
- register struct protosw *pr;
- int family, protocol;
+/*
+ * Exported (private) routine, indirection of pffindproto.
+ */
+struct protosw_old *
+pffindproto_old(int family, int protocol, int type)
+{
+ struct protosw_old *opr = NULL;
+ struct protosw *pp;
+ domain_guard_t guard;
- /*
- * All sysctl names at this level are nonterminal;
- * next two components are protocol family and protocol number,
- * then at least one addition component.
- */
- if (namelen < 3)
- return (EISDIR); /* overloaded */
- family = name[0];
- protocol = name[1];
+ guard = domain_guard_deploy();
+ if ((pp = pffindproto_locked(family, protocol, type)) != NULL &&
+ (pp->pr_flags & PR_OLD))
+ opr = pp->pr_old;
+ domain_guard_release(guard);
+ return (opr);
+}
+
+static struct protosw *
+pffindprotonotype_locked(int family, int protocol, int type)
+{
+#pragma unused(type)
+ struct domain *dp;
+ struct protosw *pp;
+
+ domain_proto_mtx_lock_assert_held();
if (family == 0)
return (0);
- for (dp = domains; dp; dp = dp->dom_next)
- if (dp->dom_family == family)
- goto found;
- return (ENOPROTOOPT);
-found:
- for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
- if (pr->pr_protocol == protocol && pr->pr_sysctl)
- return ((*pr->pr_sysctl)(name + 2, namelen - 2,
- oldp, oldlenp, newp, newlen));
- return (ENOPROTOOPT);
+
+ dp = pffinddomain_locked(family);
+ if (dp == NULL)
+ return (NULL);
+
+ TAILQ_FOREACH(pp, &dp->dom_protosw, pr_entry) {
+ if (pp->pr_protocol == protocol)
+ return (pp);
+ }
+ return (NULL);
+}
+
+struct protosw *
+pffindprotonotype(int family, int protocol)
+{
+ struct protosw *pp;
+ domain_guard_t guard;
+
+ if (protocol == 0)
+ return (NULL);
+
+ guard = domain_guard_deploy();
+ pp = pffindprotonotype_locked(family, protocol, 0);
+ domain_guard_release(guard);
+ return (pp);
}
void
-pfctlinput(cmd, sa)
- int cmd;
- struct sockaddr *sa;
+pfctlinput(int cmd, struct sockaddr *sa)
{
- pfctlinput2(cmd, sa, (void*)0);
+ pfctlinput2(cmd, sa, NULL);
}
void
-pfctlinput2(cmd, sa, ctlparam)
- int cmd;
- struct sockaddr *sa;
- void *ctlparam;
+pfctlinput2(int cmd, struct sockaddr *sa, void *ctlparam)
{
struct domain *dp;
- struct protosw *pr;
+ struct protosw *pp;
+ domain_guard_t guard;
- if (!sa)
+ if (sa == NULL)
return;
- for (dp = domains; dp; dp = dp->dom_next)
- for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
- if (pr->pr_ctlinput)
- (*pr->pr_ctlinput)(cmd, sa, ctlparam);
+
+ guard = domain_guard_deploy();
+ TAILQ_FOREACH(dp, &domains, dom_entry) {
+ TAILQ_FOREACH(pp, &dp->dom_protosw, pr_entry) {
+ if (pp->pr_ctlinput != NULL)
+ (*pp->pr_ctlinput)(cmd, sa, ctlparam);
+ }
+ }
+ domain_guard_release(guard);
}
void
-pfslowtimo(arg)
- void *arg;
+net_update_uptime(void)
{
- register struct domain *dp;
- register struct protosw *pr;
- boolean_t funnel_state;
+ struct timeval tv;
- funnel_state = thread_funnel_set(network_flock, TRUE);
+ microuptime(&tv);
+ _net_uptime = tv.tv_sec;
+ /*
+ * Round up the timer to the nearest integer value because otherwise
+ * we might setup networking timers that are off by almost 1 second.
+ */
+ if (tv.tv_usec > 500000)
+ _net_uptime++;
+}
- for (dp = domains; dp; dp = dp->dom_next)
- for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
- if (pr->pr_slowtimo)
- (*pr->pr_slowtimo)();
- timeout(pfslowtimo, NULL, hz/2);
-
- (void) thread_funnel_set(network_flock, FALSE);
+void
+net_update_uptime_secs(uint64_t secs)
+{
+ _net_uptime = secs;
}
+/*
+ * Convert our uin64_t net_uptime to a struct timeval.
+ */
void
-pffasttimo(arg)
- void *arg;
+net_uptime2timeval(struct timeval *tv)
{
- register struct domain *dp;
- register struct protosw *pr;
- boolean_t funnel_state;
+ if (tv == NULL)
+ return;
- funnel_state = thread_funnel_set(network_flock, TRUE);
+ tv->tv_usec = 0;
+ tv->tv_sec = net_uptime();
+}
- for (dp = domains; dp; dp = dp->dom_next)
- for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
- if (pr->pr_fasttimo)
- (*pr->pr_fasttimo)();
- timeout(pffasttimo, NULL, hz/5);
+/*
+ * An alternative way to obtain the coarse-grained uptime (in seconds)
+ * for networking code which do not require high-precision timestamp,
+ * as this is significantly cheaper than microuptime().
+ */
+u_int64_t
+net_uptime(void)
+{
+ if (_net_uptime == 0)
+ net_update_uptime();
- (void) thread_funnel_set(network_flock, FALSE);
+ return (_net_uptime);
}
+
+void
+domain_proto_mtx_lock_assert_held(void)
+{
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_OWNED);
+}
+
+void
+domain_proto_mtx_lock_assert_notheld(void)
+{
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_NOTOWNED);
+}
+
+domain_guard_t
+domain_guard_deploy(void)
+{
+ net_thread_marks_t marks;
+
+ marks = net_thread_marks_push(NET_THREAD_HELD_DOMAIN);
+ if (marks != net_thread_marks_none) {
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_NOTOWNED);
+ lck_mtx_lock(&domain_proto_mtx);
+ }
+ else
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_OWNED);
+
+ return ((domain_guard_t)(const void*)marks);
+}
+
+void
+domain_guard_release(domain_guard_t guard)
+{
+ net_thread_marks_t marks = (net_thread_marks_t)(const void*)guard;
+
+ if (marks != net_thread_marks_none) {
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_OWNED);
+ lck_mtx_unlock(&domain_proto_mtx);
+ net_thread_marks_pop(marks);
+ }
+ else
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_NOTOWNED);
+}
+
+domain_unguard_t
+domain_unguard_deploy(void)
+{
+ net_thread_marks_t marks;
+
+ marks = net_thread_unmarks_push(NET_THREAD_HELD_DOMAIN);
+ if (marks != net_thread_marks_none) {
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_OWNED);
+ lck_mtx_unlock(&domain_proto_mtx);
+ }
+ else
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_NOTOWNED);
+
+ return ((domain_unguard_t)(const void*)marks);
+}
+
+void
+domain_unguard_release(domain_unguard_t unguard)
+{
+ net_thread_marks_t marks = (net_thread_marks_t)(const void*)unguard;
+
+ if (marks != net_thread_marks_none) {
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_NOTOWNED);
+ lck_mtx_lock(&domain_proto_mtx);
+ net_thread_unmarks_pop(marks);
+ }
+ else
+ lck_mtx_assert(&domain_proto_mtx, LCK_MTX_ASSERT_OWNED);
+}
+
+#if (DEVELOPMENT || DEBUG)
+
+static int
+sysctl_do_drain_domains SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ int error;
+ int dummy = 0;
+
+ error = sysctl_handle_int(oidp, &dummy, 0, req);
+ if (error || req->newptr == USER_ADDR_NULL)
+ return (error);
+
+ net_drain_domains();
+
+ return (0);
+}
+
+#endif /* DEVELOPMENT || DEBUG */
+
\ No newline at end of file
projects / apple / xnu.git / blobdiff