+/*
+ * Copyright (c) 2003-2007 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * 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. 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,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * 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_OSREFERENCE_LICENSE_HEADER_END@
+ */
/* $FreeBSD: src/sys/netinet6/in6_ifattach.c,v 1.8 2002/04/19 04:46:22 suz Exp $ */
/* $KAME: in6_ifattach.c,v 1.118 2001/05/24 07:44:00 itojun Exp $ */
#include <sys/sockio.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
-#include <sys/md5.h>
+#include <libkern/crypto/md5.h>
+#include <libkern/OSAtomic.h>
+#include <kern/lock.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/route.h>
+#include <net/kpi_protocol.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
size_t in6_ifstatmax = 0;
size_t icmp6_ifstatmax = 0;
unsigned long in6_maxmtu = 0;
+extern lck_mtx_t *nd6_mutex;
#if IP6_AUTO_LINKLOCAL
int ip6_auto_linklocal = IP6_AUTO_LINKLOCAL;
int ip6_auto_linklocal = 1; /* enable by default */
#endif
+int loopattach6_done = 0;
extern struct inpcbinfo udbinfo;
extern struct inpcbinfo ripcbinfo;
-static int get_rand_ifid __P((struct ifnet *, struct in6_addr *));
-static int generate_tmp_ifid __P((u_int8_t *, const u_int8_t *, u_int8_t *));
-static int get_hw_ifid __P((struct ifnet *, struct in6_addr *));
-static int get_ifid __P((struct ifnet *, struct ifnet *, struct in6_addr *));
-static int in6_ifattach_linklocal __P((struct ifnet *, struct ifnet *, struct in6_aliasreq *));
-static int in6_ifattach_loopback __P((struct ifnet *));
+static int get_rand_ifid(struct ifnet *, struct in6_addr *);
+static int generate_tmp_ifid(u_int8_t *, const u_int8_t *, u_int8_t *);
+static int get_hw_ifid(struct ifnet *, struct in6_addr *);
+static int get_ifid(struct ifnet *, struct ifnet *, struct in6_addr *);
+static int in6_ifattach_linklocal(struct ifnet *, struct ifnet *, struct in6_aliasreq *);
+static int in6_ifattach_loopback(struct ifnet *);
#define EUI64_GBIT 0x01
#define EUI64_UBIT 0x02
* We currently use MD5(hostname) for it.
*/
static int
-get_rand_ifid(ifp, in6)
- struct ifnet *ifp;
- struct in6_addr *in6; /* upper 64bits are preserved */
+get_rand_ifid(
+ __unused struct ifnet *ifp,
+ struct in6_addr *in6) /* upper 64bits are preserved */
{
MD5_CTX ctxt;
u_int8_t digest[16];
- int hostnamelen = strlen(hostname);
+ int len = strlen(hostname);
#if 0
/* we need at least several letters as seed for ifid */
- if (hostnamelen < 3)
+ if (len < 3)
return -1;
#endif
/* generate 8 bytes of pseudo-random value. */
bzero(&ctxt, sizeof(ctxt));
MD5Init(&ctxt);
- MD5Update(&ctxt, hostname, hostnamelen);
+ MD5Update(&ctxt, hostname, len);
MD5Final(digest, &ctxt);
/* assumes sizeof(digest) > sizeof(ifid) */
}
static int
-generate_tmp_ifid(seed0, seed1, ret)
- u_int8_t *seed0, *ret;
- const u_int8_t *seed1;
+generate_tmp_ifid(
+ u_int8_t *seed0,
+ const u_int8_t *seed1,
+ u_int8_t *ret)
{
MD5_CTX ctxt;
u_int8_t seed[16], digest[16], nullbuf[8];
* XXX assumes single sockaddr_dl (AF_LINK address) per an interface
*/
static int
-get_hw_ifid(ifp, in6)
- struct ifnet *ifp;
- struct in6_addr *in6; /* upper 64bits are preserved */
+get_hw_ifid(
+ struct ifnet *ifp,
+ struct in6_addr *in6) /* upper 64bits are preserved */
{
struct ifaddr *ifa;
struct sockaddr_dl *sdl;
static u_int8_t allone[8] =
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+ /* Why doesn't this code use ifnet_addrs? */
+ ifnet_lock_shared(ifp);
for (ifa = ifp->if_addrlist.tqh_first;
ifa;
ifa = ifa->ifa_list.tqe_next)
goto found;
}
+ ifnet_lock_done(ifp);
return -1;
found:
- addr = LLADDR(sdl);
+ ifnet_lock_done(ifp);
+ addr = (u_int8_t *) LLADDR(sdl);
addrlen = sdl->sdl_alen;
/* get EUI64 */
case IFT_FDDI:
case IFT_ATM:
case IFT_IEEE1394:
+ case IFT_L2VLAN:
+ case IFT_IEEE8023ADLAG:
#if IFT_IEEE80211
case IFT_IEEE80211:
#endif
* sources.
*/
static int
-get_ifid(ifp0, altifp, in6)
- struct ifnet *ifp0;
- struct ifnet *altifp; /* secondary EUI64 source */
- struct in6_addr *in6;
+get_ifid(
+ struct ifnet *ifp0,
+ struct ifnet *altifp, /* secondary EUI64 source */
+ struct in6_addr *in6)
{
struct ifnet *ifp;
}
/* next, try to get it from some other hardware interface */
- for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_list.tqe_next)
- {
+ ifnet_head_lock_shared();
+ TAILQ_FOREACH(ifp, &ifnet_head, if_list) {
if (ifp == ifp0)
continue;
if (get_hw_ifid(ifp, in6) != 0)
nd6log((LOG_DEBUG,
"%s: borrow interface identifier from %s\n",
if_name(ifp0), if_name(ifp)));
+ ifnet_head_done();
goto success;
}
}
+ ifnet_head_done();
/* last resort: get from random number source */
if (get_rand_ifid(ifp, in6) == 0) {
}
static int
-in6_ifattach_linklocal(ifp, altifp, ifra_passed)
- struct ifnet *ifp;
- struct ifnet *altifp; /* secondary EUI64 source */
- struct in6_aliasreq *ifra_passed;
+in6_ifattach_linklocal(
+ struct ifnet *ifp,
+ struct ifnet *altifp, /* secondary EUI64 source */
+ struct in6_aliasreq *ifra_passed)
{
struct in6_ifaddr *ia;
struct in6_aliasreq ifra;
- struct nd_prefix pr0;
- int i, dl_tag, error;
+ struct nd_prefix pr0, *pr;
+ int i, error;
/*
* configure link-local address.
*/
bzero(&ifra, sizeof(ifra));
- dlil_plumb_protocol(PF_INET6, ifp, &dl_tag);
+ proto_plumb(PF_INET6, ifp);
/*
* in6_update_ifa() does not use ifra_name, but we accurately set it
* address, and then reconfigure another one, the prefix is still
* valid with referring to the old link-local address.
*/
- if (nd6_prefix_lookup(&pr0) == NULL) {
- if ((error = nd6_prelist_add(&pr0, NULL, NULL)) != 0)
+ if ((pr = nd6_prefix_lookup(&pr0)) == NULL) {
+ if ((error = nd6_prelist_add(&pr0, NULL, &pr)) != 0)
return(error);
}
in6_post_msg(ifp, KEV_INET6_NEW_LL_ADDR, ia);
+
+ /* Drop use count held above during lookup/add */
+ if (pr != NULL)
+ ndpr_rele(pr, FALSE);
+
return 0;
}
static int
-in6_ifattach_loopback(ifp)
- struct ifnet *ifp; /* must be IFT_LOOP */
+in6_ifattach_loopback(
+ struct ifnet *ifp) /* must be IFT_LOOP */
{
struct in6_aliasreq ifra;
int error;
* when ifp == NULL, the caller is responsible for filling scopeid.
*/
int
-in6_nigroup(ifp, name, namelen, in6)
- struct ifnet *ifp;
- const char *name;
- int namelen;
- struct in6_addr *in6;
+in6_nigroup(
+ struct ifnet *ifp,
+ const char *name,
+ int namelen,
+ struct in6_addr *in6)
{
const char *p;
u_char *q;
l = p - name;
strncpy(n, name, l);
n[(int)l] = '\0';
- for (q = n; *q; q++) {
+ for (q = (u_char *) n; *q; q++) {
if ('A' <= *q && *q <= 'Z')
*q = *q - 'A' + 'a';
}
}
void
-in6_nigroup_attach(name, namelen)
- const char *name;
- int namelen;
+in6_nigroup_attach(
+ const char *name,
+ int namelen)
{
struct ifnet *ifp;
struct sockaddr_in6 mltaddr;
if (in6_nigroup(NULL, name, namelen, &mltaddr.sin6_addr) != 0)
return;
- for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_list.tqe_next)
- {
+ ifnet_head_lock_shared();
+ TAILQ_FOREACH(ifp, &ifnet_head, if_list) {
mltaddr.sin6_addr.s6_addr16[1] = htons(ifp->if_index);
+ ifnet_lock_shared(ifp);
IN6_LOOKUP_MULTI(mltaddr.sin6_addr, ifp, in6m);
+ ifnet_lock_done(ifp);
if (!in6m) {
- if (!in6_addmulti(&mltaddr.sin6_addr, ifp, &error)) {
+ if (!in6_addmulti(&mltaddr.sin6_addr, ifp, &error, 0)) {
nd6log((LOG_ERR, "%s: failed to join %s "
"(errno=%d)\n", if_name(ifp),
ip6_sprintf(&mltaddr.sin6_addr),
}
}
}
+ ifnet_head_done();
}
void
-in6_nigroup_detach(name, namelen)
- const char *name;
- int namelen;
+in6_nigroup_detach(
+ const char *name,
+ int namelen)
{
struct ifnet *ifp;
struct sockaddr_in6 mltaddr;
if (in6_nigroup(NULL, name, namelen, &mltaddr.sin6_addr) != 0)
return;
- for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_list.tqe_next)
- {
+ ifnet_head_lock_shared();
+ TAILQ_FOREACH(ifp, &ifnet_head, if_list) {
mltaddr.sin6_addr.s6_addr16[1] = htons(ifp->if_index);
+ ifnet_lock_shared(ifp);
IN6_LOOKUP_MULTI(mltaddr.sin6_addr, ifp, in6m);
+ ifnet_lock_done(ifp);
if (in6m)
- in6_delmulti(in6m);
+ in6_delmulti(in6m, 0);
}
+ ifnet_head_done();
}
/*
* XXX multiple link-local address case
*/
void
-in6_ifattach(ifp, altifp, ifra)
- struct ifnet *ifp;
- struct ifnet *altifp; /* secondary EUI64 source */
- struct in6_aliasreq *ifra;
+in6_ifattach(
+ struct ifnet *ifp,
+ struct ifnet *altifp, /* secondary EUI64 source */
+ struct in6_aliasreq *ifra)
{
static size_t if_indexlim = 8;
struct in6_ifaddr *ia;
struct in6_addr in6;
-
/*
* We have some arrays that should be indexed by if_index.
* since if_index will grow dynamically, they should grow too.
* XXX multiple loopback interface case.
*/
if ((ifp->if_flags & IFF_LOOPBACK) != 0) {
- in6 = in6addr_loopback;
- if (in6ifa_ifpwithaddr(ifp, &in6) == NULL) {
- if (in6_ifattach_loopback(ifp) != 0)
- return;
+ struct in6_ifaddr *ia6 = NULL;
+ if (!OSCompareAndSwap(0, 1, (UInt32 *)&loopattach6_done)) {
+ in6 = in6addr_loopback;
+ if ((ia6 = in6ifa_ifpwithaddr(ifp, &in6)) == NULL) {
+ if (in6_ifattach_loopback(ifp) != 0) {
+ OSCompareAndSwap(1, 0, (UInt32 *)&loopattach6_done);
+ return;
+ }
+ }
+ else {
+ ifafree(&ia6->ia_ifa);
+ }
}
}
* from the ifnet list in bsdi.
*/
void
-in6_ifdetach(ifp)
- struct ifnet *ifp;
+in6_ifdetach(
+ struct ifnet *ifp)
{
- struct in6_ifaddr *ia, *oia;
+ struct in6_ifaddr *ia, *oia, *nia;
struct ifaddr *ifa, *next;
struct rtentry *rt;
short rtflags;
struct sockaddr_in6 sin6;
- struct in6_multi *in6m;
- struct in6_multi *in6m_next;
/* nuke prefix list. this may try to remove some of ifaddrs as well */
in6_purgeprefix(ifp);
nd6_purge(ifp);
/* nuke any of IPv6 addresses we have */
- for (ifa = ifp->if_addrlist.tqh_first; ifa; ifa = next)
- {
- next = ifa->ifa_list.tqe_next;
- if (ifa->ifa_addr->sa_family != AF_INET6)
+
+ lck_mtx_lock(nd6_mutex);
+ for (ia = in6_ifaddrs; ia != NULL; ia = nia) {
+ nia = ia->ia_next;
+ if (ia->ia_ifa.ifa_ifp != ifp)
continue;
- in6_purgeaddr(ifa);
+ in6_purgeaddr(&ia->ia_ifa, 1);
}
+ lck_mtx_unlock(nd6_mutex);
+
+ ifnet_lock_exclusive(ifp);
/* undo everything done by in6_ifattach(), just in case */
for (ifa = ifp->if_addrlist.tqh_first; ifa; ifa = next)
ia = (struct in6_ifaddr *)ifa;
/* remove from the routing table */
- if ((ia->ia_flags & IFA_ROUTE)
- && (rt = rtalloc1((struct sockaddr *)&ia->ia_addr, 0, 0UL))) {
+ lck_mtx_lock(rt_mtx);
+ if ((ia->ia_flags & IFA_ROUTE) &&
+ (rt = rtalloc1_locked((struct sockaddr *)&ia->ia_addr, 0, 0UL))) {
rtflags = rt->rt_flags;
- rtfree(rt);
- rtrequest(RTM_DELETE,
+ rtfree_locked(rt);
+ rtrequest_locked(RTM_DELETE,
(struct sockaddr *)&ia->ia_addr,
(struct sockaddr *)&ia->ia_addr,
(struct sockaddr *)&ia->ia_prefixmask,
rtflags, (struct rtentry **)0);
}
+ lck_mtx_unlock(rt_mtx);
/* remove from the linked list */
- TAILQ_REMOVE(&ifp->if_addrlist, (struct ifaddr *)ia, ifa_list);
+ if_detach_ifa(ifp, &ia->ia_ifa);
ifafree(&ia->ia_ifa);
/* also remove from the IPv6 address chain(itojun&jinmei) */
oia = ia;
- if (oia == (ia = in6_ifaddr))
- in6_ifaddr = ia->ia_next;
+ lck_mtx_lock(nd6_mutex);
+ if (oia == (ia = in6_ifaddrs))
+ in6_ifaddrs = ia->ia_next;
else {
while (ia->ia_next && (ia->ia_next != oia))
ia = ia->ia_next;
"list\n", if_name(ifp)));
}
}
+ lck_mtx_unlock(nd6_mutex);
- IFAFREE(&oia->ia_ifa);
- }
-
-#ifndef __APPLE__
-
-/* This is a cause for reentrency, as those multicast addresses are
- * freed both from the interface detaching and triggered by the closing of the socket
- * Let the socket do the cleanup and not force it from the interface level
- */
- /* leave from all multicast groups joined */
- in6_pcbpurgeif0(LIST_FIRST(udbinfo.listhead), ifp);
- in6_pcbpurgeif0(LIST_FIRST(ripcbinfo.listhead), ifp);
- for (in6m = LIST_FIRST(&in6_multihead); in6m; in6m = in6m_next) {
- in6m_next = LIST_NEXT(in6m, in6m_entry);
- if (in6m->in6m_ifp != ifp)
- continue;
- in6_delmulti(in6m);
- in6m = NULL;
+ ifafree(&oia->ia_ifa);
}
-#endif /* __APPLE__ */
+ ifnet_lock_done(ifp);
/*
* remove neighbor management table. we call it twice just to make
sin6.sin6_family = AF_INET6;
sin6.sin6_addr = in6addr_linklocal_allnodes;
sin6.sin6_addr.s6_addr16[1] = htons(ifp->if_index);
- rt = rtalloc1((struct sockaddr *)&sin6, 0, 0UL);
- if (rt && rt->rt_ifp == ifp) {
- rtrequest(RTM_DELETE, (struct sockaddr *)rt_key(rt),
- rt->rt_gateway, rt_mask(rt), rt->rt_flags, 0);
- rtfree(rt);
+ lck_mtx_lock(rt_mtx);
+ rt = rtalloc1_locked((struct sockaddr *)&sin6, 0, 0UL);
+ if (rt != NULL) {
+ if (rt->rt_ifp == ifp) {
+ rtrequest_locked(RTM_DELETE, (struct sockaddr *)rt_key(rt),
+ rt->rt_gateway, rt_mask(rt), rt->rt_flags, 0);
+ }
+ rtfree_locked(rt);
}
+ lck_mtx_unlock(rt_mtx);
}
void
-in6_get_tmpifid(ifp, retbuf, baseid, generate)
- struct ifnet *ifp;
- u_int8_t *retbuf;
- const u_int8_t *baseid;
- int generate;
+in6_get_tmpifid(
+ struct ifnet *ifp,
+ u_int8_t *retbuf,
+ const u_int8_t *baseid,
+ int generate)
{
u_int8_t nullbuf[8];
struct nd_ifinfo *ndi = &nd_ifinfo[ifp->if_index];
bcopy(ndi->randomid, retbuf, 8);
}
-void
-in6_tmpaddrtimer_funneled(void *ignored_arg)
-{
-#ifdef __APPLE__
- boolean_t funnel_state;
- funnel_state = thread_funnel_set(network_flock, TRUE);
-#endif
- in6_tmpaddrtimer(ignored_arg);
-#ifdef __APPLE__
- (void) thread_funnel_set(network_flock, FALSE);
-#endif
-}
-
+extern size_t nd_ifinfo_indexlim;
void
-in6_tmpaddrtimer(ignored_arg)
- void *ignored_arg;
+in6_tmpaddrtimer(
+ __unused void *ignored_arg)
{
int i;
struct nd_ifinfo *ndi;
u_int8_t nullbuf[8];
- int s = splnet();
- timeout(in6_tmpaddrtimer_funneled, (caddr_t)0,
+ timeout(in6_tmpaddrtimer, (caddr_t)0,
(ip6_temp_preferred_lifetime - ip6_desync_factor -
ip6_temp_regen_advance) * hz);
- bzero(nullbuf, sizeof(nullbuf));
- for (i = 1; i < if_index + 1; i++) {
- ndi = &nd_ifinfo[i];
- if (bcmp(ndi->randomid, nullbuf, sizeof(nullbuf)) != 0) {
- /*
- * We've been generating a random ID on this interface.
- * Create a new one.
- */
- (void)generate_tmp_ifid(ndi->randomseed0,
- ndi->randomseed1,
- ndi->randomid);
+ if (ip6_use_tempaddr) {
+
+ bzero(nullbuf, sizeof(nullbuf));
+ for (i = 1; i < nd_ifinfo_indexlim + 1; i++) {
+ ndi = &nd_ifinfo[i];
+ if (ndi->flags != ND6_IFF_PERFORMNUD)
+ continue;
+ if (bcmp(ndi->randomid, nullbuf, sizeof(nullbuf)) != 0) {
+ /*
+ * We've been generating a random ID on this interface.
+ * Create a new one.
+ */
+ (void)generate_tmp_ifid(ndi->randomseed0,
+ ndi->randomseed1,
+ ndi->randomid);
+ }
}
}
-
- splx(s);
}
projects / apple / xnu.git / blobdiff