/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2015 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) 1982, 1986, 1991, 1993
* SUCH DAMAGE.
*
* @(#)in.c 8.4 (Berkeley) 1/9/95
- * $FreeBSD: src/sys/netinet/in.c,v 1.44.2.5 2001/08/13 16:26:17 ume Exp $
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/kern_event.h>
+#include <sys/syslog.h>
+#include <sys/mcache.h>
+#include <sys/protosw.h>
+#include <sys/file.h>
+
+#include <kern/zalloc.h>
+#include <pexpert/pexpert.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/route.h>
+#include <net/kpi_protocol.h>
+#include <net/dlil.h>
+#if PF
+#include <net/pfvar.h>
+#endif /* PF */
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/in_pcb.h>
-
#include <netinet/igmp_var.h>
-#include <net/dlil.h>
-
#include <netinet/ip_var.h>
-
#include <netinet/tcp.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
-#include <sys/file.h>
+static int inctl_associd(struct socket *, u_long, caddr_t);
+static int inctl_connid(struct socket *, u_long, caddr_t);
+static int inctl_conninfo(struct socket *, u_long, caddr_t);
+static int inctl_autoaddr(struct ifnet *, struct ifreq *);
+static int inctl_arpipll(struct ifnet *, struct ifreq *);
+static int inctl_setrouter(struct ifnet *, struct ifreq *);
+static int inctl_ifaddr(struct ifnet *, struct in_ifaddr *, u_long,
+ struct ifreq *);
+static int inctl_ifdstaddr(struct ifnet *, struct in_ifaddr *, u_long,
+ struct ifreq *);
+static int inctl_ifbrdaddr(struct ifnet *, struct in_ifaddr *, u_long,
+ struct ifreq *);
+static int inctl_ifnetmask(struct ifnet *, struct in_ifaddr *, u_long,
+ struct ifreq *);
+
+static void in_socktrim(struct sockaddr_in *);
+static int in_ifinit(struct ifnet *, struct in_ifaddr *,
+ struct sockaddr_in *, int);
+
+#define IA_HASH_INIT(ia) { \
+ (ia)->ia_hash.tqe_next = (void *)(uintptr_t)-1; \
+ (ia)->ia_hash.tqe_prev = (void *)(uintptr_t)-1; \
+}
+
+#define IA_IS_HASHED(ia) \
+ (!((ia)->ia_hash.tqe_next == (void *)(uintptr_t)-1 || \
+ (ia)->ia_hash.tqe_prev == (void *)(uintptr_t)-1))
+
+static void in_iahash_remove(struct in_ifaddr *);
+static void in_iahash_insert(struct in_ifaddr *);
+static void in_iahash_insert_ptp(struct in_ifaddr *);
+static struct in_ifaddr *in_ifaddr_alloc(int);
+static void in_ifaddr_attached(struct ifaddr *);
+static void in_ifaddr_detached(struct ifaddr *);
+static void in_ifaddr_free(struct ifaddr *);
+static void in_ifaddr_trace(struct ifaddr *, int);
+
+static int in_getassocids(struct socket *, uint32_t *, user_addr_t);
+static int in_getconnids(struct socket *, sae_associd_t, uint32_t *, user_addr_t);
+static int in_getconninfo(struct socket *, sae_connid_t, uint32_t *,
+ uint32_t *, int32_t *, user_addr_t, socklen_t *, user_addr_t, socklen_t *,
+ uint32_t *, user_addr_t, uint32_t *);
+static int subnetsarelocal = 0;
+SYSCTL_INT(_net_inet_ip, OID_AUTO, subnets_are_local,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &subnetsarelocal, 0, "");
-static int in_mask2len __P((struct in_addr *));
-static void in_len2mask __P((struct in_addr *, int));
-static int in_lifaddr_ioctl __P((struct socket *, u_long, caddr_t,
- struct ifnet *, struct proc *));
+/* Track whether or not the SIOCARPIPLL ioctl has been called */
+u_int32_t ipv4_ll_arp_aware = 0;
-static void in_socktrim __P((struct sockaddr_in *));
-static int in_ifinit __P((struct ifnet *,
- struct in_ifaddr *, struct sockaddr_in *, int));
+#define INIFA_TRACE_HIST_SIZE 32 /* size of trace history */
-static int subnetsarelocal = 0;
-SYSCTL_INT(_net_inet_ip, OID_AUTO, subnets_are_local, CTLFLAG_RW,
- &subnetsarelocal, 0, "");
+/* For gdb */
+__private_extern__ unsigned int inifa_trace_hist_size = INIFA_TRACE_HIST_SIZE;
-struct in_multihead in_multihead; /* XXX BSS initialization */
+struct in_ifaddr_dbg {
+ struct in_ifaddr inifa; /* in_ifaddr */
+ struct in_ifaddr inifa_old; /* saved in_ifaddr */
+ u_int16_t inifa_refhold_cnt; /* # of IFA_ADDREF */
+ u_int16_t inifa_refrele_cnt; /* # of IFA_REMREF */
+ /*
+ * Alloc and free callers.
+ */
+ ctrace_t inifa_alloc;
+ ctrace_t inifa_free;
+ /*
+ * Circular lists of IFA_ADDREF and IFA_REMREF callers.
+ */
+ ctrace_t inifa_refhold[INIFA_TRACE_HIST_SIZE];
+ ctrace_t inifa_refrele[INIFA_TRACE_HIST_SIZE];
+ /*
+ * Trash list linkage
+ */
+ TAILQ_ENTRY(in_ifaddr_dbg) inifa_trash_link;
+};
+
+/* List of trash in_ifaddr entries protected by inifa_trash_lock */
+static TAILQ_HEAD(, in_ifaddr_dbg) inifa_trash_head;
+static decl_lck_mtx_data(, inifa_trash_lock);
+
+#if DEBUG
+static unsigned int inifa_debug = 1; /* debugging (enabled) */
+#else
+static unsigned int inifa_debug; /* debugging (disabled) */
+#endif /* !DEBUG */
+static unsigned int inifa_size; /* size of zone element */
+static struct zone *inifa_zone; /* zone for in_ifaddr */
+
+#define INIFA_ZONE_MAX 64 /* maximum elements in zone */
+#define INIFA_ZONE_NAME "in_ifaddr" /* zone name */
-extern void arp_rtrequest();
+static const unsigned int in_extra_size = sizeof (struct in_ifextra);
+static const unsigned int in_extra_bufsize = in_extra_size +
+ sizeof (void *) + sizeof (uint64_t);
+
+/*
+ * Return 1 if the address is
+ * - loopback
+ * - unicast or multicast link local
+ * - routed via a link level gateway
+ * - belongs to a directly connected (sub)net
+ */
+int
+inaddr_local(struct in_addr in)
+{
+ struct rtentry *rt;
+ struct sockaddr_in sin;
+ int local = 0;
+
+ if (ntohl(in.s_addr) == INADDR_LOOPBACK ||
+ IN_LINKLOCAL(ntohl(in.s_addr))) {
+ local = 1;
+ } else if (ntohl(in.s_addr) >= INADDR_UNSPEC_GROUP &&
+ ntohl(in.s_addr) <= INADDR_MAX_LOCAL_GROUP) {
+ local = 1;
+ } else {
+ sin.sin_family = AF_INET;
+ sin.sin_len = sizeof (sin);
+ sin.sin_addr = in;
+ rt = rtalloc1((struct sockaddr *)&sin, 0, 0);
+
+ if (rt != NULL) {
+ RT_LOCK_SPIN(rt);
+ if (rt->rt_gateway->sa_family == AF_LINK ||
+ (rt->rt_ifp->if_flags & IFF_LOOPBACK))
+ local = 1;
+ RT_UNLOCK(rt);
+ rtfree(rt);
+ } else {
+ local = in_localaddr(in);
+ }
+ }
+ return (local);
+}
/*
* Return 1 if an internet address is for a ``local'' host
* Otherwise, it includes only the directly-connected (sub)nets.
*/
int
-in_localaddr(in)
- struct in_addr in;
+in_localaddr(struct in_addr in)
{
- register u_long i = ntohl(in.s_addr);
- register struct in_ifaddr *ia;
+ u_int32_t i = ntohl(in.s_addr);
+ struct in_ifaddr *ia;
if (subnetsarelocal) {
- for (ia = in_ifaddrhead.tqh_first; ia;
- ia = ia->ia_link.tqe_next)
- if ((i & ia->ia_netmask) == ia->ia_net)
+ lck_rw_lock_shared(in_ifaddr_rwlock);
+ for (ia = in_ifaddrhead.tqh_first; ia != NULL;
+ ia = ia->ia_link.tqe_next) {
+ IFA_LOCK(&ia->ia_ifa);
+ if ((i & ia->ia_netmask) == ia->ia_net) {
+ IFA_UNLOCK(&ia->ia_ifa);
+ lck_rw_done(in_ifaddr_rwlock);
return (1);
+ }
+ IFA_UNLOCK(&ia->ia_ifa);
+ }
+ lck_rw_done(in_ifaddr_rwlock);
} else {
- for (ia = in_ifaddrhead.tqh_first; ia;
- ia = ia->ia_link.tqe_next)
- if ((i & ia->ia_subnetmask) == ia->ia_subnet)
+ lck_rw_lock_shared(in_ifaddr_rwlock);
+ for (ia = in_ifaddrhead.tqh_first; ia != NULL;
+ ia = ia->ia_link.tqe_next) {
+ IFA_LOCK(&ia->ia_ifa);
+ if ((i & ia->ia_subnetmask) == ia->ia_subnet) {
+ IFA_UNLOCK(&ia->ia_ifa);
+ lck_rw_done(in_ifaddr_rwlock);
return (1);
+ }
+ IFA_UNLOCK(&ia->ia_ifa);
+ }
+ lck_rw_done(in_ifaddr_rwlock);
}
return (0);
}
* that may not be forwarded, or whether datagrams to that destination
* may be forwarded.
*/
-int
-in_canforward(in)
- struct in_addr in;
+boolean_t
+in_canforward(struct in_addr in)
{
- register u_long i = ntohl(in.s_addr);
- register u_long net;
+ u_int32_t i = ntohl(in.s_addr);
+ u_int32_t net;
if (IN_EXPERIMENTAL(i) || IN_MULTICAST(i))
- return (0);
+ return (FALSE);
if (IN_CLASSA(i)) {
net = i & IN_CLASSA_NET;
if (net == 0 || net == (IN_LOOPBACKNET << IN_CLASSA_NSHIFT))
- return (0);
+ return (FALSE);
}
- return (1);
+ return (TRUE);
}
/*
* Trim a mask in a sockaddr
*/
static void
-in_socktrim(ap)
-struct sockaddr_in *ap;
+in_socktrim(struct sockaddr_in *ap)
{
- register char *cplim = (char *) &ap->sin_addr;
- register char *cp = (char *) (&ap->sin_addr + 1);
-
- ap->sin_len = 0;
- while (--cp >= cplim)
- if (*cp) {
- (ap)->sin_len = cp - (char *) (ap) + 1;
- break;
- }
+ char *cplim = (char *)&ap->sin_addr;
+ char *cp = (char *)(&ap->sin_addr + 1);
+
+ ap->sin_len = 0;
+ while (--cp >= cplim)
+ if (*cp) {
+ (ap)->sin_len = cp - (char *)(ap) + 1;
+ break;
+ }
}
+static int in_interfaces; /* number of external internet interfaces */
+
static int
-in_mask2len(mask)
- struct in_addr *mask;
+in_domifattach(struct ifnet *ifp)
{
- int x, y;
- u_char *p;
+ int error;
- p = (u_char *)mask;
- for (x = 0; x < sizeof(*mask); x++) {
- if (p[x] != 0xff)
- break;
- }
- y = 0;
- if (x < sizeof(*mask)) {
- for (y = 0; y < 8; y++) {
- if ((p[x] & (0x80 >> y)) == 0)
- break;
+ VERIFY(ifp != NULL);
+
+ if ((error = proto_plumb(PF_INET, ifp)) && error != EEXIST) {
+ log(LOG_ERR, "%s: proto_plumb returned %d if=%s\n",
+ __func__, error, if_name(ifp));
+ } else if (error == 0 && ifp->if_inetdata == NULL) {
+ void **pbuf, *base;
+ struct in_ifextra *ext;
+ int errorx;
+
+ if ((ext = (struct in_ifextra *)_MALLOC(in_extra_bufsize,
+ M_IFADDR, M_WAITOK|M_ZERO)) == NULL) {
+ error = ENOMEM;
+ errorx = proto_unplumb(PF_INET, ifp);
+ if (errorx != 0) {
+ log(LOG_ERR,
+ "%s: proto_unplumb returned %d if=%s%d\n",
+ __func__, errorx, ifp->if_name,
+ ifp->if_unit);
+ }
+ goto done;
}
+
+ /* Align on 64-bit boundary */
+ base = (void *)P2ROUNDUP((intptr_t)ext + sizeof (uint64_t),
+ sizeof (uint64_t));
+ VERIFY(((intptr_t)base + in_extra_size) <=
+ ((intptr_t)ext + in_extra_bufsize));
+ pbuf = (void **)((intptr_t)base - sizeof (void *));
+ *pbuf = ext;
+ ifp->if_inetdata = base;
+ VERIFY(IS_P2ALIGNED(ifp->if_inetdata, sizeof (uint64_t)));
}
- return x * 8 + y;
+done:
+ if (error == 0 && ifp->if_inetdata != NULL) {
+ /*
+ * Since the structure is never freed, we need to
+ * zero out its contents to avoid reusing stale data.
+ * A little redundant with allocation above, but it
+ * keeps the code simpler for all cases.
+ */
+ bzero(ifp->if_inetdata, in_extra_size);
+ }
+ return (error);
}
-static void
-in_len2mask(mask, len)
- struct in_addr *mask;
- int len;
+static __attribute__((noinline)) int
+inctl_associd(struct socket *so, u_long cmd, caddr_t data)
{
- int i;
- u_char *p;
-
- p = (u_char *)mask;
- bzero(mask, sizeof(*mask));
- for (i = 0; i < len / 8; i++)
- p[i] = 0xff;
- if (len % 8)
- p[i] = (0xff00 >> (len % 8)) & 0xff;
-}
+ int error = 0;
+ union {
+ struct so_aidreq32 a32;
+ struct so_aidreq64 a64;
+ } u;
-static int in_interfaces; /* number of external internet interfaces */
+ VERIFY(so != NULL);
-/*
- * Generic internet control operations (ioctl's).
- * Ifp is 0 if not an interface-specific ioctl.
- */
-/* ARGSUSED */
-int
-in_control(so, cmd, data, ifp, p)
- struct socket *so;
- u_long cmd;
- caddr_t data;
- register struct ifnet *ifp;
- struct proc *p;
-{
- register struct ifreq *ifr = (struct ifreq *)data;
- register struct in_ifaddr *ia = 0, *iap;
- register struct ifaddr *ifa;
- struct in_ifaddr *oia;
- struct in_aliasreq *ifra = (struct in_aliasreq *)data;
- struct sockaddr_in oldaddr;
- int error, hostIsNew, maskIsNew, s;
- u_long i, dl_tag;
- struct kev_msg ev_msg;
- struct kev_in_data in_event_data;
+ switch (cmd) {
+ case SIOCGASSOCIDS32: /* struct so_aidreq32 */
+ bcopy(data, &u.a32, sizeof (u.a32));
+ error = in_getassocids(so, &u.a32.sar_cnt, u.a32.sar_aidp);
+ if (error == 0)
+ bcopy(&u.a32, data, sizeof (u.a32));
+ break;
+ case SIOCGASSOCIDS64: /* struct so_aidreq64 */
+ bcopy(data, &u.a64, sizeof (u.a64));
+ error = in_getassocids(so, &u.a64.sar_cnt, u.a64.sar_aidp);
+ if (error == 0)
+ bcopy(&u.a64, data, sizeof (u.a64));
+ break;
- switch (cmd) {
- case SIOCALIFADDR:
- case SIOCDLIFADDR:
- if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
- return error;
- /*fall through*/
- case SIOCGLIFADDR:
- if (!ifp)
- return EINVAL;
- return in_lifaddr_ioctl(so, cmd, data, ifp, p);
+ default:
+ VERIFY(0);
+ /* NOTREACHED */
}
- /*
- * Find address for this interface, if it exists.
- *
- * If an alias address was specified, find that one instead of
- * the first one on the interface.
- */
- if (ifp)
- for (iap = in_ifaddrhead.tqh_first; iap;
- iap = iap->ia_link.tqe_next)
- if (iap->ia_ifp == ifp) {
- if (((struct sockaddr_in *)&ifr->ifr_addr)->sin_addr.s_addr ==
- iap->ia_addr.sin_addr.s_addr) {
- ia = iap;
- break;
- } else if (ia == NULL) {
- ia = iap;
- if (ifr->ifr_addr.sa_family != AF_INET)
- break;
- }
- }
+ return (error);
+}
+
+static __attribute__((noinline)) int
+inctl_connid(struct socket *so, u_long cmd, caddr_t data)
+{
+ int error = 0;
+ union {
+ struct so_cidreq32 c32;
+ struct so_cidreq64 c64;
+ } u;
+
+ VERIFY(so != NULL);
switch (cmd) {
- case SIOCAUTOADDR:
- if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
- return error;
+ case SIOCGCONNIDS32: /* struct so_cidreq32 */
+ bcopy(data, &u.c32, sizeof (u.c32));
+ error = in_getconnids(so, u.c32.scr_aid, &u.c32.scr_cnt,
+ u.c32.scr_cidp);
+ if (error == 0)
+ bcopy(&u.c32, data, sizeof (u.c32));
break;
- case SIOCAIFADDR:
- case SIOCDIFADDR:
- if (ifp == 0)
- return (EADDRNOTAVAIL);
- if (ifra->ifra_addr.sin_family == AF_INET) {
- for (oia = ia; ia; ia = ia->ia_link.tqe_next) {
- if (ia->ia_ifp == ifp &&
- ia->ia_addr.sin_addr.s_addr ==
- ifra->ifra_addr.sin_addr.s_addr)
- break;
- }
- if ((ifp->if_flags & IFF_POINTOPOINT)
- && (cmd == SIOCAIFADDR)
- && (ifra->ifra_dstaddr.sin_addr.s_addr
- == INADDR_ANY)) {
- return EDESTADDRREQ;
- }
- }
- else if (cmd == SIOCAIFADDR)
- return (EINVAL);
- if (cmd == SIOCDIFADDR && ia == 0)
- return (EADDRNOTAVAIL);
- /* FALLTHROUGH */
- case SIOCSIFADDR:
- case SIOCSIFNETMASK:
- case SIOCSIFDSTADDR:
-#ifdef __APPLE__
- if ((so->so_state & SS_PRIV) == 0)
- return (EPERM);
-#else
- if (p && (error = suser(p)) != 0)
- return error;
-#endif
-
- if (ifp == 0)
- return (EADDRNOTAVAIL);
- if (ifra->ifra_addr.sin_family != AF_INET && cmd == SIOCSIFADDR)
- return (EINVAL);
- if (ia == (struct in_ifaddr *)0) {
- ia = (struct in_ifaddr *)
- _MALLOC(sizeof *ia, M_IFADDR, M_WAITOK);
- if (ia == (struct in_ifaddr *)NULL)
- return (ENOBUFS);
- bzero((caddr_t)ia, sizeof *ia);
- /*
- * Protect from ipintr() traversing address list
- * while we're modifying it.
- */
- s = splnet();
-
- TAILQ_INSERT_TAIL(&in_ifaddrhead, ia, ia_link);
- ifa = &ia->ia_ifa;
- TAILQ_INSERT_TAIL(&ifp->if_addrhead, ifa, ifa_link);
+ case SIOCGCONNIDS64: /* struct so_cidreq64 */
+ bcopy(data, &u.c64, sizeof (u.c64));
+ error = in_getconnids(so, u.c64.scr_aid, &u.c64.scr_cnt,
+ u.c64.scr_cidp);
+ if (error == 0)
+ bcopy(&u.c64, data, sizeof (u.c64));
+ break;
-/*
- * Temorary code for protocol attachment XXX
- */
-
- /* Generic protocol plumbing */
+ default:
+ VERIFY(0);
+ /* NOTREACHED */
+ }
- if (error = dlil_plumb_protocol(PF_INET, ifp, &dl_tag)) {
- kprintf("in.c: warning can't plumb proto if=%s%n type %d error=%d\n",
- ifp->if_name, ifp->if_unit, ifp->if_type, error);
- error = 0; /*discard error, can be cold with unsupported interfaces */
- }
-/* End of temp code */
+ return (error);
+}
- ifa->ifa_addr = (struct sockaddr *)&ia->ia_addr;
- ifa->ifa_dstaddr = (struct sockaddr *)&ia->ia_dstaddr;
- ifa->ifa_netmask = (struct sockaddr *)&ia->ia_sockmask;
- ia->ia_sockmask.sin_len = 8;
- if (ifp->if_flags & IFF_BROADCAST) {
- ia->ia_broadaddr.sin_len = sizeof(ia->ia_addr);
- ia->ia_broadaddr.sin_family = AF_INET;
- }
- ia->ia_ifp = ifp;
- if (!(ifp->if_flags & IFF_LOOPBACK))
- in_interfaces++;
- splx(s);
- }
- break;
+static __attribute__((noinline)) int
+inctl_conninfo(struct socket *so, u_long cmd, caddr_t data)
+{
+ int error = 0;
+ union {
+ struct so_cinforeq32 ci32;
+ struct so_cinforeq64 ci64;
+ } u;
- case SIOCPROTOATTACH:
- case SIOCPROTODETACH:
- if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
- return error;
- if (ifp == 0)
- return (EADDRNOTAVAIL);
- break;
-
- case SIOCSIFBRDADDR:
-#ifdef __APPLE__
- if ((so->so_state & SS_PRIV) == 0)
- return (EPERM);
-#else
- if (p && (error = suser(p)) != 0)
- return error;
-#endif
- /* FALLTHROUGH */
+ VERIFY(so != NULL);
- case SIOCGIFADDR:
- case SIOCGIFNETMASK:
- case SIOCGIFDSTADDR:
- case SIOCGIFBRDADDR:
- if (ia == (struct in_ifaddr *)0)
- return (EADDRNOTAVAIL);
- break;
- }
switch (cmd) {
- case SIOCAUTOADDR:
- if (ifp == 0)
- return (EADDRNOTAVAIL);
- if (ifr->ifr_data)
- ifp->if_eflags |= IFEF_AUTOCONFIGURING;
- else
- ifp->if_eflags &= ~IFEF_AUTOCONFIGURING;
+ case SIOCGCONNINFO32: /* struct so_cinforeq32 */
+ bcopy(data, &u.ci32, sizeof (u.ci32));
+ error = in_getconninfo(so, u.ci32.scir_cid, &u.ci32.scir_flags,
+ &u.ci32.scir_ifindex, &u.ci32.scir_error, u.ci32.scir_src,
+ &u.ci32.scir_src_len, u.ci32.scir_dst, &u.ci32.scir_dst_len,
+ &u.ci32.scir_aux_type, u.ci32.scir_aux_data,
+ &u.ci32.scir_aux_len);
+ if (error == 0)
+ bcopy(&u.ci32, data, sizeof (u.ci32));
break;
- case SIOCGIFADDR:
- *((struct sockaddr_in *)&ifr->ifr_addr) = ia->ia_addr;
+ case SIOCGCONNINFO64: /* struct so_cinforeq64 */
+ bcopy(data, &u.ci64, sizeof (u.ci64));
+ error = in_getconninfo(so, u.ci64.scir_cid, &u.ci64.scir_flags,
+ &u.ci64.scir_ifindex, &u.ci64.scir_error, u.ci64.scir_src,
+ &u.ci64.scir_src_len, u.ci64.scir_dst, &u.ci64.scir_dst_len,
+ &u.ci64.scir_aux_type, u.ci64.scir_aux_data,
+ &u.ci64.scir_aux_len);
+ if (error == 0)
+ bcopy(&u.ci64, data, sizeof (u.ci64));
break;
- case SIOCGIFBRDADDR:
- if ((ifp->if_flags & IFF_BROADCAST) == 0)
- return (EINVAL);
- *((struct sockaddr_in *)&ifr->ifr_dstaddr) = ia->ia_broadaddr;
- break;
+ default:
+ VERIFY(0);
+ /* NOTREACHED */
+ }
- case SIOCGIFDSTADDR:
- if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
- return (EINVAL);
- *((struct sockaddr_in *)&ifr->ifr_dstaddr) = ia->ia_dstaddr;
- break;
+ return (error);
+}
- case SIOCGIFNETMASK:
- *((struct sockaddr_in *)&ifr->ifr_addr) = ia->ia_sockmask;
- break;
+/*
+ * Caller passes in the ioctl data pointer directly via "ifr", with the
+ * expectation that this routine always uses bcopy() or other byte-aligned
+ * memory accesses.
+ */
+static __attribute__((noinline)) int
+inctl_autoaddr(struct ifnet *ifp, struct ifreq *ifr)
+{
+ int error = 0, intval;
- case SIOCSIFDSTADDR:
- if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
- return (EINVAL);
- oldaddr = ia->ia_dstaddr;
- ia->ia_dstaddr = *(struct sockaddr_in *)&ifr->ifr_dstaddr;
- error = dlil_ioctl(PF_INET, ifp, SIOCSIFDSTADDR, (caddr_t)ia);
- if (error == EOPNOTSUPP)
- error = 0;
+ VERIFY(ifp != NULL);
- if (error) {
- ia->ia_dstaddr = oldaddr;
- return error;
+ bcopy(&ifr->ifr_intval, &intval, sizeof (intval));
+
+ ifnet_lock_exclusive(ifp);
+ if (intval) {
+ /*
+ * An interface in IPv4 router mode implies that it
+ * is configured with a static IP address and should
+ * not act as a DHCP client; prevent SIOCAUTOADDR from
+ * being set in that mode.
+ */
+ if (ifp->if_eflags & IFEF_IPV4_ROUTER) {
+ intval = 0; /* be safe; clear flag if set */
+ error = EBUSY;
+ } else {
+ ifp->if_eflags |= IFEF_AUTOCONFIGURING;
}
+ }
+ if (!intval)
+ ifp->if_eflags &= ~IFEF_AUTOCONFIGURING;
+ ifnet_lock_done(ifp);
- ev_msg.vendor_code = KEV_VENDOR_APPLE;
- ev_msg.kev_class = KEV_NETWORK_CLASS;
- ev_msg.kev_subclass = KEV_INET_SUBCLASS;
-
- ev_msg.event_code = KEV_INET_SIFDSTADDR;
-
- if (ia->ia_ifa.ifa_dstaddr)
- in_event_data.ia_dstaddr =
- ((struct sockaddr_in *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
- else
- in_event_data.ia_dstaddr.s_addr = 0;
-
- in_event_data.ia_addr = ia->ia_addr.sin_addr;
- in_event_data.ia_net = ia->ia_net;
- in_event_data.ia_netmask = ia->ia_netmask;
- in_event_data.ia_subnet = ia->ia_subnet;
- in_event_data.ia_subnetmask = ia->ia_subnetmask;
- in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
- strncpy(&in_event_data.link_data.if_name[0], ifp->if_name, IFNAMSIZ);
- in_event_data.link_data.if_family = ifp->if_family;
- in_event_data.link_data.if_unit = (unsigned long) ifp->if_unit;
+ return (error);
+}
- ev_msg.dv[0].data_ptr = &in_event_data;
- ev_msg.dv[0].data_length = sizeof(struct kev_in_data);
- ev_msg.dv[1].data_length = 0;
+/*
+ * Caller passes in the ioctl data pointer directly via "ifr", with the
+ * expectation that this routine always uses bcopy() or other byte-aligned
+ * memory accesses.
+ */
+static __attribute__((noinline)) int
+inctl_arpipll(struct ifnet *ifp, struct ifreq *ifr)
+{
+ int error = 0, intval;
- kev_post_msg(&ev_msg);
+ VERIFY(ifp != NULL);
+ bcopy(&ifr->ifr_intval, &intval, sizeof (intval));
+ ipv4_ll_arp_aware = 1;
- if (ia->ia_flags & IFA_ROUTE) {
- ia->ia_ifa.ifa_dstaddr = (struct sockaddr *)&oldaddr;
- rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
- ia->ia_ifa.ifa_dstaddr =
- (struct sockaddr *)&ia->ia_dstaddr;
- rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP);
+ ifnet_lock_exclusive(ifp);
+ if (intval) {
+ /*
+ * An interface in IPv4 router mode implies that it
+ * is configured with a static IP address and should
+ * not have to deal with IPv4 Link-Local Address;
+ * prevent SIOCARPIPLL from being set in that mode.
+ */
+ if (ifp->if_eflags & IFEF_IPV4_ROUTER) {
+ intval = 0; /* be safe; clear flag if set */
+ error = EBUSY;
+ } else {
+ ifp->if_eflags |= IFEF_ARPLL;
}
- break;
+ }
+ if (!intval)
+ ifp->if_eflags &= ~IFEF_ARPLL;
+ ifnet_lock_done(ifp);
- case SIOCSIFBRDADDR:
- if ((ifp->if_flags & IFF_BROADCAST) == 0)
- return (EINVAL);
- ia->ia_broadaddr = *(struct sockaddr_in *)&ifr->ifr_broadaddr;
+ return (error);
+}
- ev_msg.vendor_code = KEV_VENDOR_APPLE;
- ev_msg.kev_class = KEV_NETWORK_CLASS;
- ev_msg.kev_subclass = KEV_INET_SUBCLASS;
-
- ev_msg.event_code = KEV_INET_SIFBRDADDR;
+/*
+ * Handle SIOCSETROUTERMODE to set or clear the IPv4 router mode flag on
+ * the interface. When in this mode, IPv4 Link-Local Address support is
+ * disabled in ARP, and DHCP client support is disabled in IP input; turning
+ * any of them on would cause an error to be returned. Entering or exiting
+ * this mode will result in the removal of IPv4 addresses currently configured
+ * on the interface.
+ *
+ * Caller passes in the ioctl data pointer directly via "ifr", with the
+ * expectation that this routine always uses bcopy() or other byte-aligned
+ * memory accesses.
+ */
+static __attribute__((noinline)) int
+inctl_setrouter(struct ifnet *ifp, struct ifreq *ifr)
+{
+ int error = 0, intval;
- if (ia->ia_ifa.ifa_dstaddr)
- in_event_data.ia_dstaddr =
- ((struct sockaddr_in *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
- else
- in_event_data.ia_dstaddr.s_addr = 0;
-
- in_event_data.ia_addr = ia->ia_addr.sin_addr;
- in_event_data.ia_net = ia->ia_net;
- in_event_data.ia_netmask = ia->ia_netmask;
- in_event_data.ia_subnet = ia->ia_subnet;
- in_event_data.ia_subnetmask = ia->ia_subnetmask;
- in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
- strncpy(&in_event_data.link_data.if_name[0], ifp->if_name, IFNAMSIZ);
- in_event_data.link_data.if_family = ifp->if_family;
- in_event_data.link_data.if_unit = (unsigned long) ifp->if_unit;
+ VERIFY(ifp != NULL);
- ev_msg.dv[0].data_ptr = &in_event_data;
- ev_msg.dv[0].data_length = sizeof(struct kev_in_data);
- ev_msg.dv[1].data_length = 0;
+ /* Router mode isn't valid for loopback */
+ if (ifp->if_flags & IFF_LOOPBACK)
+ return (ENODEV);
- kev_post_msg(&ev_msg);
+ bcopy(&ifr->ifr_intval, &intval, sizeof (intval));
- break;
+ ifnet_lock_exclusive(ifp);
+ if (intval) {
+ ifp->if_eflags |= IFEF_IPV4_ROUTER;
+ ifp->if_eflags &= ~(IFEF_ARPLL | IFEF_AUTOCONFIGURING);
+ } else {
+ ifp->if_eflags &= ~IFEF_IPV4_ROUTER;
+ }
+ ifnet_lock_done(ifp);
- case SIOCSIFADDR:
- return (in_ifinit(ifp, ia,
- (struct sockaddr_in *) &ifr->ifr_addr, 1));
-
- case SIOCPROTOATTACH:
- error = dlil_plumb_protocol(PF_INET, ifp, &dl_tag);
- if (error)
- return(error);
- break;
-
- case SIOCPROTODETACH:
- // if an ip address is still present, refuse to detach
- TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
- if (ifa->ifa_addr->sa_family == AF_INET)
- return EBUSY;
-
- error = dlil_unplumb_protocol(PF_INET, ifp);
- if (error)
- return(error);
- break;
-
+ /* purge all IPv4 addresses configured on this interface */
+ in_purgeaddrs(ifp);
- case SIOCSIFNETMASK:
- i = ifra->ifra_addr.sin_addr.s_addr;
- ia->ia_subnetmask = ntohl(ia->ia_sockmask.sin_addr.s_addr = i);
- ev_msg.vendor_code = KEV_VENDOR_APPLE;
- ev_msg.kev_class = KEV_NETWORK_CLASS;
- ev_msg.kev_subclass = KEV_INET_SUBCLASS;
-
- ev_msg.event_code = KEV_INET_SIFNETMASK;
+ return (error);
+}
- if (ia->ia_ifa.ifa_dstaddr)
- in_event_data.ia_dstaddr =
- ((struct sockaddr_in *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
- else
- in_event_data.ia_dstaddr.s_addr = 0;
-
- in_event_data.ia_addr = ia->ia_addr.sin_addr;
- in_event_data.ia_net = ia->ia_net;
- in_event_data.ia_netmask = ia->ia_netmask;
- in_event_data.ia_subnet = ia->ia_subnet;
- in_event_data.ia_subnetmask = ia->ia_subnetmask;
- in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
- strncpy(&in_event_data.link_data.if_name[0], ifp->if_name, IFNAMSIZ);
- in_event_data.link_data.if_family = ifp->if_family;
- in_event_data.link_data.if_unit = (unsigned long) ifp->if_unit;
+/*
+ * Caller passes in the ioctl data pointer directly via "ifr", with the
+ * expectation that this routine always uses bcopy() or other byte-aligned
+ * memory accesses.
+ */
+static __attribute__((noinline)) int
+inctl_ifaddr(struct ifnet *ifp, struct in_ifaddr *ia, u_long cmd,
+ struct ifreq *ifr)
+{
+ struct kev_in_data in_event_data;
+ struct kev_msg ev_msg;
+ struct sockaddr_in addr;
+ struct ifaddr *ifa;
+ int error = 0;
- ev_msg.dv[0].data_ptr = &in_event_data;
- ev_msg.dv[0].data_length = sizeof(struct kev_in_data);
- ev_msg.dv[1].data_length = 0;
+ VERIFY(ifp != NULL);
- kev_post_msg(&ev_msg);
+ bzero(&in_event_data, sizeof (struct kev_in_data));
+ bzero(&ev_msg, sizeof (struct kev_msg));
+
+ switch (cmd) {
+ case SIOCGIFADDR: /* struct ifreq */
+ if (ia == NULL) {
+ error = EADDRNOTAVAIL;
+ break;
+ }
+ IFA_LOCK(&ia->ia_ifa);
+ bcopy(&ia->ia_addr, &ifr->ifr_addr, sizeof (addr));
+ IFA_UNLOCK(&ia->ia_ifa);
+ break;
+ case SIOCSIFADDR: /* struct ifreq */
+ VERIFY(ia != NULL);
+ bcopy(&ifr->ifr_addr, &addr, sizeof (addr));
+ /*
+ * If this is a new address, the reference count for the
+ * hash table has been taken at creation time above.
+ */
+ error = in_ifinit(ifp, ia, &addr, 1);
+ if (error == 0) {
+ (void) ifnet_notify_address(ifp, AF_INET);
+ }
break;
- case SIOCAIFADDR:
+ case SIOCAIFADDR: { /* struct {if,in_}aliasreq */
+ struct in_aliasreq *ifra = (struct in_aliasreq *)ifr;
+ struct sockaddr_in broadaddr, mask;
+ int hostIsNew, maskIsNew;
+
+ VERIFY(ia != NULL);
+ bcopy(&ifra->ifra_addr, &addr, sizeof (addr));
+ bcopy(&ifra->ifra_broadaddr, &broadaddr, sizeof (broadaddr));
+ bcopy(&ifra->ifra_mask, &mask, sizeof (mask));
+
maskIsNew = 0;
hostIsNew = 1;
error = 0;
+
+ IFA_LOCK(&ia->ia_ifa);
if (ia->ia_addr.sin_family == AF_INET) {
- if (ifra->ifra_addr.sin_len == 0) {
- ifra->ifra_addr = ia->ia_addr;
+ if (addr.sin_len == 0) {
+ addr = ia->ia_addr;
hostIsNew = 0;
- } else if (ifra->ifra_addr.sin_addr.s_addr ==
- ia->ia_addr.sin_addr.s_addr)
+ } else if (addr.sin_addr.s_addr ==
+ ia->ia_addr.sin_addr.s_addr) {
hostIsNew = 0;
+ }
}
- if (ifra->ifra_mask.sin_len) {
- in_ifscrub(ifp, ia);
- ia->ia_sockmask = ifra->ifra_mask;
+ if (mask.sin_len) {
+ IFA_UNLOCK(&ia->ia_ifa);
+ in_ifscrub(ifp, ia, 0);
+ IFA_LOCK(&ia->ia_ifa);
+ ia->ia_sockmask = mask;
ia->ia_subnetmask =
- ntohl(ia->ia_sockmask.sin_addr.s_addr);
+ ntohl(ia->ia_sockmask.sin_addr.s_addr);
maskIsNew = 1;
}
if ((ifp->if_flags & IFF_POINTOPOINT) &&
- (ifra->ifra_dstaddr.sin_family == AF_INET)) {
- in_ifscrub(ifp, ia);
- ia->ia_dstaddr = ifra->ifra_dstaddr;
+ (broadaddr.sin_family == AF_INET)) {
+ IFA_UNLOCK(&ia->ia_ifa);
+ in_ifscrub(ifp, ia, 0);
+ IFA_LOCK(&ia->ia_ifa);
+ ia->ia_dstaddr = broadaddr;
+ ia->ia_dstaddr.sin_len = sizeof (struct sockaddr_in);
maskIsNew = 1; /* We lie; but the effect's the same */
}
- if (ifra->ifra_addr.sin_family == AF_INET &&
- (hostIsNew || maskIsNew)) {
- error = in_ifinit(ifp, ia, &ifra->ifra_addr, 0);
+ if (addr.sin_family == AF_INET && (hostIsNew || maskIsNew)) {
+ IFA_UNLOCK(&ia->ia_ifa);
+ error = in_ifinit(ifp, ia, &addr, 0);
+ } else {
+ IFA_UNLOCK(&ia->ia_ifa);
+ }
+ if (error == 0) {
+ (void) ifnet_notify_address(ifp, AF_INET);
}
+ IFA_LOCK(&ia->ia_ifa);
if ((ifp->if_flags & IFF_BROADCAST) &&
- (ifra->ifra_broadaddr.sin_family == AF_INET))
- ia->ia_broadaddr = ifra->ifra_broadaddr;
+ (broadaddr.sin_family == AF_INET))
+ ia->ia_broadaddr = broadaddr;
/*
* Report event.
*/
-
if ((error == 0) || (error == EEXIST)) {
- ev_msg.vendor_code = KEV_VENDOR_APPLE;
- ev_msg.kev_class = KEV_NETWORK_CLASS;
- ev_msg.kev_subclass = KEV_INET_SUBCLASS;
-
- if (hostIsNew)
- ev_msg.event_code = KEV_INET_NEW_ADDR;
- else
- ev_msg.event_code = KEV_INET_CHANGED_ADDR;
-
- if (ia->ia_ifa.ifa_dstaddr)
- in_event_data.ia_dstaddr =
- ((struct sockaddr_in *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
- else
- in_event_data.ia_dstaddr.s_addr = 0;
-
- in_event_data.ia_addr = ia->ia_addr.sin_addr;
- in_event_data.ia_net = ia->ia_net;
- in_event_data.ia_netmask = ia->ia_netmask;
- in_event_data.ia_subnet = ia->ia_subnet;
- in_event_data.ia_subnetmask = ia->ia_subnetmask;
- in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
- strncpy(&in_event_data.link_data.if_name[0], ifp->if_name, IFNAMSIZ);
- in_event_data.link_data.if_family = ifp->if_family;
- in_event_data.link_data.if_unit = (unsigned long) ifp->if_unit;
-
- ev_msg.dv[0].data_ptr = &in_event_data;
- ev_msg.dv[0].data_length = sizeof(struct kev_in_data);
- ev_msg.dv[1].data_length = 0;
-
- kev_post_msg(&ev_msg);
+ ev_msg.vendor_code = KEV_VENDOR_APPLE;
+ ev_msg.kev_class = KEV_NETWORK_CLASS;
+ ev_msg.kev_subclass = KEV_INET_SUBCLASS;
+
+ if (hostIsNew)
+ ev_msg.event_code = KEV_INET_NEW_ADDR;
+ else
+ ev_msg.event_code = KEV_INET_CHANGED_ADDR;
+
+ if (ia->ia_ifa.ifa_dstaddr) {
+ in_event_data.ia_dstaddr =
+ ((struct sockaddr_in *)(void *)ia->
+ ia_ifa.ifa_dstaddr)->sin_addr;
+ } else {
+ in_event_data.ia_dstaddr.s_addr = INADDR_ANY;
+ }
+ in_event_data.ia_addr = ia->ia_addr.sin_addr;
+ in_event_data.ia_net = ia->ia_net;
+ in_event_data.ia_netmask = ia->ia_netmask;
+ in_event_data.ia_subnet = ia->ia_subnet;
+ in_event_data.ia_subnetmask = ia->ia_subnetmask;
+ in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
+ IFA_UNLOCK(&ia->ia_ifa);
+ (void) strlcpy(&in_event_data.link_data.if_name[0],
+ ifp->if_name, IFNAMSIZ);
+ in_event_data.link_data.if_family = ifp->if_family;
+ in_event_data.link_data.if_unit = ifp->if_unit;
+
+ ev_msg.dv[0].data_ptr = &in_event_data;
+ ev_msg.dv[0].data_length = sizeof (struct kev_in_data);
+ ev_msg.dv[1].data_length = 0;
+
+ kev_post_msg(&ev_msg);
+ } else {
+ IFA_UNLOCK(&ia->ia_ifa);
}
+ break;
+ }
- return (error);
+ case SIOCDIFADDR: /* struct ifreq */
+ VERIFY(ia != NULL);
+ error = ifnet_ioctl(ifp, PF_INET, SIOCDIFADDR, ia);
+ if (error == EOPNOTSUPP)
+ error = 0;
+ if (error != 0)
+ break;
- case SIOCDIFADDR:
- error = dlil_ioctl(PF_INET, ifp, SIOCDIFADDR, (caddr_t)ia);
- if (error == EOPNOTSUPP)
- error = 0;
- if (error)
- return error;
-
- ev_msg.vendor_code = KEV_VENDOR_APPLE;
- ev_msg.kev_class = KEV_NETWORK_CLASS;
- ev_msg.kev_subclass = KEV_INET_SUBCLASS;
-
- ev_msg.event_code = KEV_INET_ADDR_DELETED;
-
- if (ia->ia_ifa.ifa_dstaddr)
- in_event_data.ia_dstaddr =
- ((struct sockaddr_in *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
- else
- in_event_data.ia_dstaddr.s_addr = 0;
-
- in_event_data.ia_addr = ia->ia_addr.sin_addr;
- in_event_data.ia_net = ia->ia_net;
- in_event_data.ia_netmask = ia->ia_netmask;
- in_event_data.ia_subnet = ia->ia_subnet;
- in_event_data.ia_subnetmask = ia->ia_subnetmask;
- in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
- strncpy(&in_event_data.link_data.if_name[0], ifp->if_name, IFNAMSIZ);
+ /* Fill out the kernel event information */
+ ev_msg.vendor_code = KEV_VENDOR_APPLE;
+ ev_msg.kev_class = KEV_NETWORK_CLASS;
+ ev_msg.kev_subclass = KEV_INET_SUBCLASS;
+
+ ev_msg.event_code = KEV_INET_ADDR_DELETED;
+
+ IFA_LOCK(&ia->ia_ifa);
+ if (ia->ia_ifa.ifa_dstaddr) {
+ in_event_data.ia_dstaddr = ((struct sockaddr_in *)
+ (void *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
+ } else {
+ in_event_data.ia_dstaddr.s_addr = INADDR_ANY;
+ }
+ in_event_data.ia_addr = ia->ia_addr.sin_addr;
+ in_event_data.ia_net = ia->ia_net;
+ in_event_data.ia_netmask = ia->ia_netmask;
+ in_event_data.ia_subnet = ia->ia_subnet;
+ in_event_data.ia_subnetmask = ia->ia_subnetmask;
+ in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
+ IFA_UNLOCK(&ia->ia_ifa);
+ (void) strlcpy(&in_event_data.link_data.if_name[0],
+ ifp->if_name, IFNAMSIZ);
in_event_data.link_data.if_family = ifp->if_family;
- in_event_data.link_data.if_unit = (unsigned long) ifp->if_unit;
+ in_event_data.link_data.if_unit = (u_int32_t)ifp->if_unit;
ev_msg.dv[0].data_ptr = &in_event_data;
- ev_msg.dv[0].data_length = sizeof(struct kev_in_data);
+ ev_msg.dv[0].data_length = sizeof(struct kev_in_data);
ev_msg.dv[1].data_length = 0;
- kev_post_msg(&ev_msg);
+ ifa = &ia->ia_ifa;
+ lck_rw_lock_exclusive(in_ifaddr_rwlock);
+ /* Release ia_link reference */
+ IFA_REMREF(ifa);
+ TAILQ_REMOVE(&in_ifaddrhead, ia, ia_link);
+ IFA_LOCK(ifa);
+ if (IA_IS_HASHED(ia))
+ in_iahash_remove(ia);
+ IFA_UNLOCK(ifa);
+ lck_rw_done(in_ifaddr_rwlock);
/*
* in_ifscrub kills the interface route.
*/
- in_ifscrub(ifp, ia);
-#ifndef __APPLE__
- /*
- * in_ifadown gets rid of all the rest of
- * the routes. This is not quite the right
- * thing to do, but at least if we are running
- * a routing process they will come back.
- */
- in_ifadown(&ia->ia_ifa, 1);
- /*
- * XXX horrible hack to detect that we are being called
- * from if_detach()
- */
- if (!ifnet_addrs[ifp->if_index - 1]) {
- in_pcbpurgeif0(LIST_FIRST(ripcbinfo.listhead), ifp);
- in_pcbpurgeif0(LIST_FIRST(udbinfo.listhead), ifp);
- }
-#endif
+ in_ifscrub(ifp, ia, 0);
+ ifnet_lock_exclusive(ifp);
+ IFA_LOCK(ifa);
+ /* if_detach_ifa() releases ifa_link reference */
+ if_detach_ifa(ifp, ifa);
+ /* Our reference to this address is dropped at the bottom */
+ IFA_UNLOCK(ifa);
+
+ /* invalidate route caches */
+ routegenid_inet_update();
/*
- * Protect from ipintr() traversing address list
- * while we're modifying it.
+ * If the interface supports multicast, and no address is left,
+ * remove the "all hosts" multicast group from that interface.
*/
- s = splnet();
+ if ((ifp->if_flags & IFF_MULTICAST) ||
+ ifp->if_allhostsinm != NULL) {
- ifa = &ia->ia_ifa;
- TAILQ_REMOVE(&ifp->if_addrhead, ifa, ifa_link);
- oia = ia;
- TAILQ_REMOVE(&in_ifaddrhead, oia, ia_link);
- ifafree(&oia->ia_ifa);
-
-#ifdef __APPLE__
- /*
- * If the interface supports multicast, and no address is left,
- * remove the "all hosts" multicast group from that interface.
- */
- if (ifp->if_flags & IFF_MULTICAST) {
- struct in_addr addr;
- struct in_multi *inm;
-
- TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
- if (ifa->ifa_addr->sa_family == AF_INET)
+ TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
+ IFA_LOCK(ifa);
+ if (ifa->ifa_addr->sa_family == AF_INET) {
+ IFA_UNLOCK(ifa);
break;
+ }
+ IFA_UNLOCK(ifa);
+ }
+ ifnet_lock_done(ifp);
+
+ lck_mtx_lock(&ifp->if_addrconfig_lock);
+ if (ifa == NULL && ifp->if_allhostsinm != NULL) {
+ struct in_multi *inm = ifp->if_allhostsinm;
+ ifp->if_allhostsinm = NULL;
- if (ifa == 0) {
- addr.s_addr = htonl(INADDR_ALLHOSTS_GROUP);
- IN_LOOKUP_MULTI(addr, ifp, inm);
- if (inm)
- in_delmulti(inm);
+ in_delmulti(inm);
+ /* release the reference for allhostsinm */
+ INM_REMREF(inm);
}
+ lck_mtx_unlock(&ifp->if_addrconfig_lock);
+ } else {
+ ifnet_lock_done(ifp);
}
-#endif
- splx(s);
- break;
-#ifdef __APPLE__
- case SIOCSETOT: {
- /*
- * Inspiration from tcp_ctloutput() and ip_ctloutput()
- * Special ioctl for OpenTransport sockets
- */
- struct inpcb *inp, *cloned_inp;
- int error = 0;
- int cloned_fd = *(int *)data;
-
- s = splnet(); /* XXX */
- inp = sotoinpcb(so);
- if (inp == NULL) {
- splx(s);
- break;
- }
-
- /* let's make sure it's either -1 or a valid file descriptor */
- if (cloned_fd != -1) {
- struct socket *cloned_so;
- struct file *cloned_fp;
- error = getsock(p->p_fd, cloned_fd, &cloned_fp);
- if (error){
- splx(s);
- break;
- }
- cloned_so = (struct socket *)cloned_fp->f_data;
- cloned_inp = sotoinpcb(cloned_so);
- } else {
- cloned_inp = NULL;
- }
-
- if (cloned_inp == NULL) {
- /* OT always uses IP_PORTRANGE_HIGH */
- inp->inp_flags &= ~(INP_LOWPORT);
- inp->inp_flags |= INP_HIGHPORT;
- /* For UDP, OT allows broadcast by default */
- if (so->so_type == SOCK_DGRAM)
- so->so_options |= SO_BROADCAST;
- /* For TCP we want to see MSG_OOB when receive urgent data */
- else if (so->so_type == SOCK_STREAM)
- so->so_options |= SO_WANTOOBFLAG;
- } else {
- inp->inp_ip_tos = cloned_inp->inp_ip_tos;
- inp->inp_ip_ttl = cloned_inp->inp_ip_ttl;
- inp->inp_flags = cloned_inp->inp_flags;
-
- /* Multicast options */
- if (cloned_inp->inp_moptions != NULL) {
- int i;
- struct ip_moptions *cloned_imo = cloned_inp->inp_moptions;
- struct ip_moptions *imo = inp->inp_moptions;
-
- if (imo == NULL) {
- /*
- * No multicast option buffer attached to the pcb;
- * allocate one.
- */
- splx();
- imo = (struct ip_moptions*)
- _MALLOC(sizeof(*imo), M_IPMOPTS, M_WAITOK);
- if (imo == NULL) {
- error = ENOBUFS;
- break;
- }
- s = splnet(); /* XXX */
- inp->inp_moptions = imo;
- }
- imo->imo_multicast_ifp = cloned_imo->imo_multicast_ifp;
- imo->imo_multicast_vif = cloned_imo->imo_multicast_vif;
- imo->imo_multicast_ttl = cloned_imo->imo_multicast_ttl;
- imo->imo_multicast_loop = cloned_imo->imo_multicast_loop;
- imo->imo_num_memberships = cloned_imo->imo_num_memberships;
- for (i = 0; i < cloned_imo->imo_num_memberships; i++) {
- imo->imo_membership[i] =
- in_addmulti(&cloned_imo->imo_membership[i]->inm_addr,
- cloned_imo->imo_membership[i]->inm_ifp);
- if (imo->imo_membership[i] == NULL) {
- error = ENOBUFS;
- break;
- }
- }
- if (i < cloned_imo->imo_num_memberships) {
- /* Failed, perform cleanup */
- for (i--; i >= 0; i--)
- in_delmulti(imo->imo_membership[i]);
- break;
- }
- }
- }
- splx(s);
- break;
- }
-#endif /* __APPLE__ */
+ /* Post the kernel event */
+ kev_post_msg(&ev_msg);
+
+ /*
+ * See if there is any IPV4 address left and if so,
+ * reconfigure KDP to use current primary address.
+ */
+ ifa = ifa_ifpgetprimary(ifp, AF_INET);
+ if (ifa != NULL) {
+ /*
+ * NOTE: SIOCSIFADDR is defined with struct ifreq
+ * as parameter, but here we are sending it down
+ * to the interface with a pointer to struct ifaddr,
+ * for legacy reasons.
+ */
+ error = ifnet_ioctl(ifp, PF_INET, SIOCSIFADDR, ifa);
+ if (error == EOPNOTSUPP)
+ error = 0;
+
+ /* Release reference from ifa_ifpgetprimary() */
+ IFA_REMREF(ifa);
+ }
+ (void) ifnet_notify_address(ifp, AF_INET);
+ break;
default:
- return EOPNOTSUPP;
- /* Darwin: dlil_ioctl called from ifioctl */
-#ifndef __APPLE__
- return ((*ifp->if_ioctl)(ifp, cmd, data));
-#endif
+ VERIFY(0);
+ /* NOTREACHED */
}
- return (0);
+
+ return (error);
}
/*
- * SIOC[GAD]LIFADDR.
- * SIOCGLIFADDR: get first address. (?!?)
- * SIOCGLIFADDR with IFLR_PREFIX:
- * get first address that matches the specified prefix.
- * SIOCALIFADDR: add the specified address.
- * SIOCALIFADDR with IFLR_PREFIX:
- * EINVAL since we can't deduce hostid part of the address.
- * SIOCDLIFADDR: delete the specified address.
- * SIOCDLIFADDR with IFLR_PREFIX:
- * delete the first address that matches the specified prefix.
- * return values:
- * EINVAL on invalid parameters
- * EADDRNOTAVAIL on prefix match failed/specified address not found
- * other values may be returned from in_ioctl()
+ * Caller passes in the ioctl data pointer directly via "ifr", with the
+ * expectation that this routine always uses bcopy() or other byte-aligned
+ * memory accesses.
*/
-static int
-in_lifaddr_ioctl(so, cmd, data, ifp, p)
- struct socket *so;
- u_long cmd;
- caddr_t data;
- struct ifnet *ifp;
- struct proc *p;
+static __attribute__((noinline)) int
+inctl_ifdstaddr(struct ifnet *ifp, struct in_ifaddr *ia, u_long cmd,
+ struct ifreq *ifr)
{
- struct if_laddrreq *iflr = (struct if_laddrreq *)data;
- struct ifaddr *ifa;
+ struct kev_in_data in_event_data;
+ struct kev_msg ev_msg;
+ struct sockaddr_in dstaddr;
+ int error = 0;
- /* sanity checks */
- if (!data || !ifp) {
- panic("invalid argument to in_lifaddr_ioctl");
- /*NOTRECHED*/
- }
+ VERIFY(ifp != NULL);
+
+ if (!(ifp->if_flags & IFF_POINTOPOINT))
+ return (EINVAL);
+
+ bzero(&in_event_data, sizeof (struct kev_in_data));
+ bzero(&ev_msg, sizeof (struct kev_msg));
switch (cmd) {
- case SIOCGLIFADDR:
- /* address must be specified on GET with IFLR_PREFIX */
- if ((iflr->flags & IFLR_PREFIX) == 0)
+ case SIOCGIFDSTADDR: /* struct ifreq */
+ if (ia == NULL) {
+ error = EADDRNOTAVAIL;
break;
- /*FALLTHROUGH*/
- case SIOCALIFADDR:
- case SIOCDLIFADDR:
- /* address must be specified on ADD and DELETE */
- if (iflr->addr.ss_family != AF_INET)
- return EINVAL;
- if (iflr->addr.ss_len != sizeof(struct sockaddr_in))
- return EINVAL;
- /* XXX need improvement */
- if (iflr->dstaddr.ss_family
- && iflr->dstaddr.ss_family != AF_INET)
- return EINVAL;
- if (iflr->dstaddr.ss_family
- && iflr->dstaddr.ss_len != sizeof(struct sockaddr_in))
- return EINVAL;
+ }
+ IFA_LOCK(&ia->ia_ifa);
+ bcopy(&ia->ia_dstaddr, &ifr->ifr_dstaddr, sizeof (dstaddr));
+ IFA_UNLOCK(&ia->ia_ifa);
break;
- default: /*shouldn't happen*/
- return EOPNOTSUPP;
- }
- if (sizeof(struct in_addr) * 8 < iflr->prefixlen)
- return EINVAL;
-
- switch (cmd) {
- case SIOCALIFADDR:
- {
- struct in_aliasreq ifra;
-
- if (iflr->flags & IFLR_PREFIX)
- return EINVAL;
-
- /* copy args to in_aliasreq, perform ioctl(SIOCAIFADDR_IN6). */
- bzero(&ifra, sizeof(ifra));
- bcopy(iflr->iflr_name, ifra.ifra_name,
- sizeof(ifra.ifra_name));
-
- bcopy(&iflr->addr, &ifra.ifra_addr, iflr->addr.ss_len);
- if (iflr->dstaddr.ss_family) { /*XXX*/
- bcopy(&iflr->dstaddr, &ifra.ifra_dstaddr,
- iflr->dstaddr.ss_len);
+ case SIOCSIFDSTADDR: /* struct ifreq */
+ VERIFY(ia != NULL);
+ IFA_LOCK(&ia->ia_ifa);
+ dstaddr = ia->ia_dstaddr;
+ bcopy(&ifr->ifr_dstaddr, &ia->ia_dstaddr, sizeof (dstaddr));
+ if (ia->ia_dstaddr.sin_family == AF_INET)
+ ia->ia_dstaddr.sin_len = sizeof (struct sockaddr_in);
+ IFA_UNLOCK(&ia->ia_ifa);
+ /*
+ * NOTE: SIOCSIFDSTADDR is defined with struct ifreq
+ * as parameter, but here we are sending it down
+ * to the interface with a pointer to struct ifaddr,
+ * for legacy reasons.
+ */
+ error = ifnet_ioctl(ifp, PF_INET, SIOCSIFDSTADDR, ia);
+ IFA_LOCK(&ia->ia_ifa);
+ if (error == EOPNOTSUPP)
+ error = 0;
+ if (error != 0) {
+ ia->ia_dstaddr = dstaddr;
+ IFA_UNLOCK(&ia->ia_ifa);
+ break;
}
+ IFA_LOCK_ASSERT_HELD(&ia->ia_ifa);
- ifra.ifra_mask.sin_family = AF_INET;
- ifra.ifra_mask.sin_len = sizeof(struct sockaddr_in);
- in_len2mask(&ifra.ifra_mask.sin_addr, iflr->prefixlen);
-
- return in_control(so, SIOCAIFADDR, (caddr_t)&ifra, ifp, p);
- }
- case SIOCGLIFADDR:
- case SIOCDLIFADDR:
- {
- struct in_ifaddr *ia;
- struct in_addr mask, candidate, match;
- struct sockaddr_in *sin;
- int cmp;
-
- bzero(&mask, sizeof(mask));
- if (iflr->flags & IFLR_PREFIX) {
- /* lookup a prefix rather than address. */
- in_len2mask(&mask, iflr->prefixlen);
-
- sin = (struct sockaddr_in *)&iflr->addr;
- match.s_addr = sin->sin_addr.s_addr;
- match.s_addr &= mask.s_addr;
-
- /* if you set extra bits, that's wrong */
- if (match.s_addr != sin->sin_addr.s_addr)
- return EINVAL;
-
- cmp = 1;
+ ev_msg.vendor_code = KEV_VENDOR_APPLE;
+ ev_msg.kev_class = KEV_NETWORK_CLASS;
+ ev_msg.kev_subclass = KEV_INET_SUBCLASS;
+
+ ev_msg.event_code = KEV_INET_SIFDSTADDR;
+
+ if (ia->ia_ifa.ifa_dstaddr) {
+ in_event_data.ia_dstaddr = ((struct sockaddr_in *)
+ (void *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
} else {
- if (cmd == SIOCGLIFADDR) {
- /* on getting an address, take the 1st match */
- cmp = 0; /*XXX*/
- } else {
- /* on deleting an address, do exact match */
- in_len2mask(&mask, 32);
- sin = (struct sockaddr_in *)&iflr->addr;
- match.s_addr = sin->sin_addr.s_addr;
+ in_event_data.ia_dstaddr.s_addr = INADDR_ANY;
+ }
- cmp = 1;
- }
+ in_event_data.ia_addr = ia->ia_addr.sin_addr;
+ in_event_data.ia_net = ia->ia_net;
+ in_event_data.ia_netmask = ia->ia_netmask;
+ in_event_data.ia_subnet = ia->ia_subnet;
+ in_event_data.ia_subnetmask = ia->ia_subnetmask;
+ in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
+ IFA_UNLOCK(&ia->ia_ifa);
+ (void) strlcpy(&in_event_data.link_data.if_name[0],
+ ifp->if_name, IFNAMSIZ);
+ in_event_data.link_data.if_family = ifp->if_family;
+ in_event_data.link_data.if_unit = (u_int32_t)ifp->if_unit;
+
+ ev_msg.dv[0].data_ptr = &in_event_data;
+ ev_msg.dv[0].data_length = sizeof (struct kev_in_data);
+ ev_msg.dv[1].data_length = 0;
+
+ kev_post_msg(&ev_msg);
+
+ lck_mtx_lock(rnh_lock);
+ IFA_LOCK(&ia->ia_ifa);
+ if (ia->ia_flags & IFA_ROUTE) {
+ ia->ia_ifa.ifa_dstaddr = (struct sockaddr *)&dstaddr;
+ IFA_UNLOCK(&ia->ia_ifa);
+ rtinit_locked(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
+ IFA_LOCK(&ia->ia_ifa);
+ ia->ia_ifa.ifa_dstaddr =
+ (struct sockaddr *)&ia->ia_dstaddr;
+ IFA_UNLOCK(&ia->ia_ifa);
+ rtinit_locked(&(ia->ia_ifa), (int)RTM_ADD,
+ RTF_HOST|RTF_UP);
+ } else {
+ IFA_UNLOCK(&ia->ia_ifa);
}
+ lck_mtx_unlock(rnh_lock);
+ break;
- TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
- if (ifa->ifa_addr->sa_family != AF_INET6)
- continue;
- if (!cmp)
- break;
- candidate.s_addr = ((struct sockaddr_in *)&ifa->ifa_addr)->sin_addr.s_addr;
- candidate.s_addr &= mask.s_addr;
- if (candidate.s_addr == match.s_addr)
+
+
+ default:
+ VERIFY(0);
+ /* NOTREACHED */
+ }
+
+ return (error);
+}
+
+/*
+ * Caller passes in the ioctl data pointer directly via "ifr", with the
+ * expectation that this routine always uses bcopy() or other byte-aligned
+ * memory accesses.
+ */
+static __attribute__((noinline)) int
+inctl_ifbrdaddr(struct ifnet *ifp, struct in_ifaddr *ia, u_long cmd,
+ struct ifreq *ifr)
+{
+ struct kev_in_data in_event_data;
+ struct kev_msg ev_msg;
+ int error = 0;
+
+ VERIFY(ifp != NULL);
+
+ if (ia == NULL)
+ return (EADDRNOTAVAIL);
+
+ if (!(ifp->if_flags & IFF_BROADCAST))
+ return (EINVAL);
+
+ bzero(&in_event_data, sizeof (struct kev_in_data));
+ bzero(&ev_msg, sizeof (struct kev_msg));
+
+ switch (cmd) {
+ case SIOCGIFBRDADDR: /* struct ifreq */
+ IFA_LOCK(&ia->ia_ifa);
+ bcopy(&ia->ia_broadaddr, &ifr->ifr_broadaddr,
+ sizeof (struct sockaddr_in));
+ IFA_UNLOCK(&ia->ia_ifa);
+ break;
+
+ case SIOCSIFBRDADDR: /* struct ifreq */
+ IFA_LOCK(&ia->ia_ifa);
+ bcopy(&ifr->ifr_broadaddr, &ia->ia_broadaddr,
+ sizeof (struct sockaddr_in));
+
+ ev_msg.vendor_code = KEV_VENDOR_APPLE;
+ ev_msg.kev_class = KEV_NETWORK_CLASS;
+ ev_msg.kev_subclass = KEV_INET_SUBCLASS;
+
+ ev_msg.event_code = KEV_INET_SIFBRDADDR;
+
+ if (ia->ia_ifa.ifa_dstaddr) {
+ in_event_data.ia_dstaddr = ((struct sockaddr_in *)
+ (void *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
+ } else {
+ in_event_data.ia_dstaddr.s_addr = INADDR_ANY;
+ }
+ in_event_data.ia_addr = ia->ia_addr.sin_addr;
+ in_event_data.ia_net = ia->ia_net;
+ in_event_data.ia_netmask = ia->ia_netmask;
+ in_event_data.ia_subnet = ia->ia_subnet;
+ in_event_data.ia_subnetmask = ia->ia_subnetmask;
+ in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
+ IFA_UNLOCK(&ia->ia_ifa);
+ (void) strlcpy(&in_event_data.link_data.if_name[0],
+ ifp->if_name, IFNAMSIZ);
+ in_event_data.link_data.if_family = ifp->if_family;
+ in_event_data.link_data.if_unit = (u_int32_t)ifp->if_unit;
+
+ ev_msg.dv[0].data_ptr = &in_event_data;
+ ev_msg.dv[0].data_length = sizeof (struct kev_in_data);
+ ev_msg.dv[1].data_length = 0;
+
+ kev_post_msg(&ev_msg);
+ break;
+
+ default:
+ VERIFY(0);
+ /* NOTREACHED */
+ }
+
+ return (error);
+}
+
+/*
+ * Caller passes in the ioctl data pointer directly via "ifr", with the
+ * expectation that this routine always uses bcopy() or other byte-aligned
+ * memory accesses.
+ */
+static __attribute__((noinline)) int
+inctl_ifnetmask(struct ifnet *ifp, struct in_ifaddr *ia, u_long cmd,
+ struct ifreq *ifr)
+{
+ struct kev_in_data in_event_data;
+ struct kev_msg ev_msg;
+ struct sockaddr_in mask;
+ int error = 0;
+
+ VERIFY(ifp != NULL);
+
+ bzero(&in_event_data, sizeof (struct kev_in_data));
+ bzero(&ev_msg, sizeof (struct kev_msg));
+
+ switch (cmd) {
+ case SIOCGIFNETMASK: /* struct ifreq */
+ if (ia == NULL) {
+ error = EADDRNOTAVAIL;
+ break;
+ }
+ IFA_LOCK(&ia->ia_ifa);
+ bcopy(&ia->ia_sockmask, &ifr->ifr_addr, sizeof (mask));
+ IFA_UNLOCK(&ia->ia_ifa);
+ break;
+
+ case SIOCSIFNETMASK: { /* struct ifreq */
+ in_addr_t i;
+
+ bcopy(&ifr->ifr_addr, &mask, sizeof (mask));
+ i = mask.sin_addr.s_addr;
+
+ VERIFY(ia != NULL);
+ IFA_LOCK(&ia->ia_ifa);
+ ia->ia_subnetmask = ntohl(ia->ia_sockmask.sin_addr.s_addr = i);
+ ev_msg.vendor_code = KEV_VENDOR_APPLE;
+ ev_msg.kev_class = KEV_NETWORK_CLASS;
+ ev_msg.kev_subclass = KEV_INET_SUBCLASS;
+
+ ev_msg.event_code = KEV_INET_SIFNETMASK;
+
+ if (ia->ia_ifa.ifa_dstaddr) {
+ in_event_data.ia_dstaddr = ((struct sockaddr_in *)
+ (void *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
+ } else {
+ in_event_data.ia_dstaddr.s_addr = INADDR_ANY;
+ }
+ in_event_data.ia_addr = ia->ia_addr.sin_addr;
+ in_event_data.ia_net = ia->ia_net;
+ in_event_data.ia_netmask = ia->ia_netmask;
+ in_event_data.ia_subnet = ia->ia_subnet;
+ in_event_data.ia_subnetmask = ia->ia_subnetmask;
+ in_event_data.ia_netbroadcast = ia->ia_netbroadcast;
+ IFA_UNLOCK(&ia->ia_ifa);
+ (void) strlcpy(&in_event_data.link_data.if_name[0],
+ ifp->if_name, IFNAMSIZ);
+ in_event_data.link_data.if_family = ifp->if_family;
+ in_event_data.link_data.if_unit = (u_int32_t)ifp->if_unit;
+
+ ev_msg.dv[0].data_ptr = &in_event_data;
+ ev_msg.dv[0].data_length = sizeof (struct kev_in_data);
+ ev_msg.dv[1].data_length = 0;
+
+ kev_post_msg(&ev_msg);
+ break;
+ }
+
+ default:
+ VERIFY(0);
+ /* NOTREACHED */
+ }
+
+ return (error);
+}
+
+/*
+ * Generic INET control operations (ioctl's).
+ *
+ * ifp is NULL if not an interface-specific ioctl.
+ *
+ * Most of the routines called to handle the ioctls would end up being
+ * tail-call optimized, which unfortunately causes this routine to
+ * consume too much stack space; this is the reason for the "noinline"
+ * attribute used on those routines.
+ *
+ * If called directly from within the networking stack (as opposed to via
+ * pru_control), the socket parameter may be NULL.
+ */
+int
+in_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp,
+ struct proc *p)
+{
+ struct ifreq *ifr = (struct ifreq *)(void *)data;
+ struct sockaddr_in addr, dstaddr;
+ struct sockaddr_in sin, *sa = NULL;
+ boolean_t privileged = (proc_suser(p) == 0);
+ boolean_t so_unlocked = FALSE;
+ struct in_ifaddr *ia = NULL;
+ struct ifaddr *ifa;
+ int error = 0;
+
+ /* In case it's NULL, make sure it came from the kernel */
+ VERIFY(so != NULL || p == kernproc);
+
+ /*
+ * ioctls which don't require ifp, but require socket.
+ */
+ switch (cmd) {
+ case SIOCGASSOCIDS32: /* struct so_aidreq32 */
+ case SIOCGASSOCIDS64: /* struct so_aidreq64 */
+ return (inctl_associd(so, cmd, data));
+ /* NOTREACHED */
+
+ case SIOCGCONNIDS32: /* struct so_cidreq32 */
+ case SIOCGCONNIDS64: /* struct so_cidreq64 */
+ return (inctl_connid(so, cmd, data));
+ /* NOTREACHED */
+
+ case SIOCGCONNINFO32: /* struct so_cinforeq32 */
+ case SIOCGCONNINFO64: /* struct so_cinforeq64 */
+ return (inctl_conninfo(so, cmd, data));
+ /* NOTREACHED */
+ }
+
+ /*
+ * The rest of ioctls require ifp; reject if we don't have one;
+ * return ENXIO to be consistent with ifioctl().
+ */
+ if (ifp == NULL)
+ return (ENXIO);
+
+ /*
+ * ioctls which require ifp but not interface address.
+ */
+ switch (cmd) {
+ case SIOCAUTOADDR: /* struct ifreq */
+ if (!privileged)
+ return (EPERM);
+ return (inctl_autoaddr(ifp, ifr));
+ /* NOTREACHED */
+
+ case SIOCARPIPLL: /* struct ifreq */
+ if (!privileged)
+ return (EPERM);
+ return (inctl_arpipll(ifp, ifr));
+ /* NOTREACHED */
+
+ case SIOCSETROUTERMODE: /* struct ifreq */
+ if (!privileged)
+ return (EPERM);
+ return (inctl_setrouter(ifp, ifr));
+ /* NOTREACHED */
+
+ case SIOCPROTOATTACH: /* struct ifreq */
+ if (!privileged)
+ return (EPERM);
+ return (in_domifattach(ifp));
+ /* NOTREACHED */
+
+ case SIOCPROTODETACH: /* struct ifreq */
+ if (!privileged)
+ return (EPERM);
+
+ /*
+ * If an IPv4 address is still present, refuse to detach.
+ */
+ ifnet_lock_shared(ifp);
+ TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
+ IFA_LOCK(ifa);
+ if (ifa->ifa_addr->sa_family == AF_INET) {
+ IFA_UNLOCK(ifa);
break;
+ }
+ IFA_UNLOCK(ifa);
}
- if (!ifa)
- return EADDRNOTAVAIL;
- ia = (struct in_ifaddr *)ifa;
+ ifnet_lock_done(ifp);
+ return ((ifa == NULL) ? proto_unplumb(PF_INET, ifp) : EBUSY);
+ /* NOTREACHED */
+ }
- if (cmd == SIOCGLIFADDR) {
- /* fill in the if_laddrreq structure */
- bcopy(&ia->ia_addr, &iflr->addr, ia->ia_addr.sin_len);
+ /*
+ * ioctls which require interface address; obtain sockaddr_in.
+ */
+ switch (cmd) {
+ case SIOCAIFADDR: /* struct {if,in_}aliasreq */
+ if (!privileged)
+ return (EPERM);
+ bcopy(&((struct in_aliasreq *)(void *)data)->ifra_addr,
+ &sin, sizeof (sin));
+ sa = &sin;
+ break;
- if ((ifp->if_flags & IFF_POINTOPOINT) != 0) {
- bcopy(&ia->ia_dstaddr, &iflr->dstaddr,
- ia->ia_dstaddr.sin_len);
- } else
- bzero(&iflr->dstaddr, sizeof(iflr->dstaddr));
+ case SIOCDIFADDR: /* struct ifreq */
+ case SIOCSIFADDR: /* struct ifreq */
+ case SIOCSIFDSTADDR: /* struct ifreq */
+ case SIOCSIFNETMASK: /* struct ifreq */
+ case SIOCSIFBRDADDR: /* struct ifreq */
+ if (!privileged)
+ return (EPERM);
+ /* FALLTHRU */
+ case SIOCGIFADDR: /* struct ifreq */
+ case SIOCGIFDSTADDR: /* struct ifreq */
+ case SIOCGIFNETMASK: /* struct ifreq */
+ case SIOCGIFBRDADDR: /* struct ifreq */
+ bcopy(&ifr->ifr_addr, &sin, sizeof (sin));
+ sa = &sin;
+ break;
+ }
- iflr->prefixlen =
- in_mask2len(&ia->ia_sockmask.sin_addr);
+ /*
+ * Find address for this interface, if it exists.
+ *
+ * If an alias address was specified, find that one instead of
+ * the first one on the interface, if possible.
+ */
+ VERIFY(ia == NULL);
+ if (sa != NULL) {
+ struct in_ifaddr *iap;
- iflr->flags = 0; /*XXX*/
+ /*
+ * Any failures from this point on must take into account
+ * a non-NULL "ia" with an outstanding reference count, and
+ * therefore requires IFA_REMREF. Jump to "done" label
+ * instead of calling return if "ia" is valid.
+ */
+ lck_rw_lock_shared(in_ifaddr_rwlock);
+ TAILQ_FOREACH(iap, INADDR_HASH(sa->sin_addr.s_addr), ia_hash) {
+ IFA_LOCK(&iap->ia_ifa);
+ if (iap->ia_ifp == ifp &&
+ iap->ia_addr.sin_addr.s_addr ==
+ sa->sin_addr.s_addr) {
+ ia = iap;
+ IFA_UNLOCK(&iap->ia_ifa);
+ break;
+ }
+ IFA_UNLOCK(&iap->ia_ifa);
+ }
+ /* take a reference on ia before releasing lock */
+ if (ia != NULL)
+ IFA_ADDREF(&ia->ia_ifa);
+ lck_rw_done(in_ifaddr_rwlock);
+
+ if (ia == NULL) {
+ ifnet_lock_shared(ifp);
+ TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
+ iap = ifatoia(ifa);
+ IFA_LOCK(&iap->ia_ifa);
+ if (iap->ia_addr.sin_family == AF_INET) {
+ ia = iap;
+ IFA_UNLOCK(&iap->ia_ifa);
+ break;
+ }
+ IFA_UNLOCK(&iap->ia_ifa);
+ }
+ /* take a reference on ia before releasing lock */
+ if (ia != NULL)
+ IFA_ADDREF(&ia->ia_ifa);
+ ifnet_lock_done(ifp);
+ }
+ }
- return 0;
+ /*
+ * Unlock the socket since ifnet_ioctl() may be invoked by
+ * one of the ioctl handlers below. Socket will be re-locked
+ * prior to returning.
+ */
+ if (so != NULL) {
+ socket_unlock(so, 0);
+ so_unlocked = TRUE;
+ }
+
+ switch (cmd) {
+ case SIOCAIFADDR: /* struct {if,in_}aliasreq */
+ case SIOCDIFADDR: /* struct ifreq */
+ if (cmd == SIOCAIFADDR) {
+ bcopy(&((struct in_aliasreq *)(void *)data)->
+ ifra_addr, &addr, sizeof (addr));
+ bcopy(&((struct in_aliasreq *)(void *)data)->
+ ifra_dstaddr, &dstaddr, sizeof (dstaddr));
} else {
- struct in_aliasreq ifra;
-
- /* fill in_aliasreq and do ioctl(SIOCDIFADDR_IN6) */
- bzero(&ifra, sizeof(ifra));
- bcopy(iflr->iflr_name, ifra.ifra_name,
- sizeof(ifra.ifra_name));
-
- bcopy(&ia->ia_addr, &ifra.ifra_addr,
- ia->ia_addr.sin_len);
- if ((ifp->if_flags & IFF_POINTOPOINT) != 0) {
- bcopy(&ia->ia_dstaddr, &ifra.ifra_dstaddr,
- ia->ia_dstaddr.sin_len);
+ VERIFY(cmd == SIOCDIFADDR);
+ bcopy(&((struct ifreq *)(void *)data)->ifr_addr,
+ &addr, sizeof (addr));
+ bzero(&dstaddr, sizeof (dstaddr));
+ }
+
+ if (addr.sin_family == AF_INET) {
+ struct in_ifaddr *oia;
+
+ lck_rw_lock_shared(in_ifaddr_rwlock);
+ for (oia = ia; ia; ia = ia->ia_link.tqe_next) {
+ IFA_LOCK(&ia->ia_ifa);
+ if (ia->ia_ifp == ifp &&
+ ia->ia_addr.sin_addr.s_addr ==
+ addr.sin_addr.s_addr) {
+ IFA_ADDREF_LOCKED(&ia->ia_ifa);
+ IFA_UNLOCK(&ia->ia_ifa);
+ break;
+ }
+ IFA_UNLOCK(&ia->ia_ifa);
+ }
+ lck_rw_done(in_ifaddr_rwlock);
+ if (oia != NULL)
+ IFA_REMREF(&oia->ia_ifa);
+ if ((ifp->if_flags & IFF_POINTOPOINT) &&
+ (cmd == SIOCAIFADDR) &&
+ (dstaddr.sin_addr.s_addr == INADDR_ANY)) {
+ error = EDESTADDRREQ;
+ goto done;
}
- bcopy(&ia->ia_sockmask, &ifra.ifra_dstaddr,
- ia->ia_sockmask.sin_len);
+ } else if (cmd == SIOCAIFADDR) {
+ error = EINVAL;
+ goto done;
+ }
+ if (cmd == SIOCDIFADDR && ia == NULL) {
+ error = EADDRNOTAVAIL;
+ goto done;
+ }
+ /* FALLTHROUGH */
+ case SIOCSIFADDR: /* struct ifreq */
+ case SIOCSIFDSTADDR: /* struct ifreq */
+ case SIOCSIFNETMASK: /* struct ifreq */
+ if (cmd == SIOCAIFADDR) {
+ /* fell thru from above; just repeat it */
+ bcopy(&((struct in_aliasreq *)(void *)data)->
+ ifra_addr, &addr, sizeof (addr));
+ } else {
+ VERIFY(cmd == SIOCDIFADDR || cmd == SIOCSIFADDR ||
+ cmd == SIOCSIFNETMASK || cmd == SIOCSIFDSTADDR);
+ bcopy(&((struct ifreq *)(void *)data)->ifr_addr,
+ &addr, sizeof (addr));
+ }
- return in_control(so, SIOCDIFADDR, (caddr_t)&ifra,
- ifp, p);
+ if (addr.sin_family != AF_INET && cmd == SIOCSIFADDR) {
+ error = EINVAL;
+ goto done;
}
- }
+ if (ia == NULL) {
+ ia = in_ifaddr_alloc(M_WAITOK);
+ if (ia == NULL) {
+ error = ENOBUFS;
+ goto done;
+ }
+ ifnet_lock_exclusive(ifp);
+ ifa = &ia->ia_ifa;
+ IFA_LOCK(ifa);
+ /* Hold a reference for this routine */
+ IFA_ADDREF_LOCKED(ifa);
+ IA_HASH_INIT(ia);
+ ifa->ifa_addr = (struct sockaddr *)&ia->ia_addr;
+ ifa->ifa_dstaddr = (struct sockaddr *)&ia->ia_dstaddr;
+ ifa->ifa_netmask = (struct sockaddr *)&ia->ia_sockmask;
+ ia->ia_sockmask.sin_len = 8;
+ if (ifp->if_flags & IFF_BROADCAST) {
+ ia->ia_broadaddr.sin_len = sizeof (ia->ia_addr);
+ ia->ia_broadaddr.sin_family = AF_INET;
+ }
+ ia->ia_ifp = ifp;
+ if (!(ifp->if_flags & IFF_LOOPBACK))
+ in_interfaces++;
+ /* if_attach_ifa() holds a reference for ifa_link */
+ if_attach_ifa(ifp, ifa);
+ /*
+ * If we have to go through in_ifinit(), make sure
+ * to avoid installing route(s) based on this address
+ * via PFC_IFUP event, before the link resolver (ARP)
+ * initializes it.
+ */
+ if (cmd == SIOCAIFADDR || cmd == SIOCSIFADDR)
+ ifa->ifa_debug |= IFD_NOTREADY;
+ IFA_UNLOCK(ifa);
+ ifnet_lock_done(ifp);
+ lck_rw_lock_exclusive(in_ifaddr_rwlock);
+ /* Hold a reference for ia_link */
+ IFA_ADDREF(ifa);
+ TAILQ_INSERT_TAIL(&in_ifaddrhead, ia, ia_link);
+ lck_rw_done(in_ifaddr_rwlock);
+ /* discard error */
+ (void) in_domifattach(ifp);
+ error = 0;
+ }
+ break;
}
- return EOPNOTSUPP; /*just for safety*/
+ switch (cmd) {
+ case SIOCGIFDSTADDR: /* struct ifreq */
+ case SIOCSIFDSTADDR: /* struct ifreq */
+ error = inctl_ifdstaddr(ifp, ia, cmd, ifr);
+ break;
+
+ case SIOCGIFBRDADDR: /* struct ifreq */
+ case SIOCSIFBRDADDR: /* struct ifreq */
+ error = inctl_ifbrdaddr(ifp, ia, cmd, ifr);
+ break;
+
+ case SIOCGIFNETMASK: /* struct ifreq */
+ case SIOCSIFNETMASK: /* struct ifreq */
+ error = inctl_ifnetmask(ifp, ia, cmd, ifr);
+ break;
+
+ case SIOCGIFADDR: /* struct ifreq */
+ case SIOCSIFADDR: /* struct ifreq */
+ case SIOCAIFADDR: /* struct {if,in_}aliasreq */
+ case SIOCDIFADDR: /* struct ifreq */
+ error = inctl_ifaddr(ifp, ia, cmd, ifr);
+ break;
+
+ default:
+ error = EOPNOTSUPP;
+ break;
+ }
+done:
+ if (ia != NULL)
+ IFA_REMREF(&ia->ia_ifa);
+ if (so_unlocked)
+ socket_lock(so, 0);
+
+ return (error);
}
/*
* Delete any existing route for an interface.
*/
void
-in_ifscrub(ifp, ia)
- register struct ifnet *ifp;
- register struct in_ifaddr *ia;
+in_ifscrub(struct ifnet *ifp, struct in_ifaddr *ia, int locked)
{
-
- if ((ia->ia_flags & IFA_ROUTE) == 0)
+ IFA_LOCK(&ia->ia_ifa);
+ if ((ia->ia_flags & IFA_ROUTE) == 0) {
+ IFA_UNLOCK(&ia->ia_ifa);
return;
+ }
+ IFA_UNLOCK(&ia->ia_ifa);
+ if (!locked)
+ lck_mtx_lock(rnh_lock);
if (ifp->if_flags & (IFF_LOOPBACK|IFF_POINTOPOINT))
- rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
+ rtinit_locked(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
else
- rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0);
+ rtinit_locked(&(ia->ia_ifa), (int)RTM_DELETE, 0);
+ IFA_LOCK(&ia->ia_ifa);
ia->ia_flags &= ~IFA_ROUTE;
+ IFA_UNLOCK(&ia->ia_ifa);
+ if (!locked)
+ lck_mtx_unlock(rnh_lock);
+}
+
+/*
+ * Caller must hold in_ifaddr_rwlock as writer.
+ */
+static void
+in_iahash_remove(struct in_ifaddr *ia)
+{
+ lck_rw_assert(in_ifaddr_rwlock, LCK_RW_ASSERT_EXCLUSIVE);
+ IFA_LOCK_ASSERT_HELD(&ia->ia_ifa);
+
+ if (!IA_IS_HASHED(ia)) {
+ panic("attempt to remove wrong ia %p from hash table\n", ia);
+ /* NOTREACHED */
+ }
+ TAILQ_REMOVE(INADDR_HASH(ia->ia_addr.sin_addr.s_addr), ia, ia_hash);
+ IA_HASH_INIT(ia);
+ if (IFA_REMREF_LOCKED(&ia->ia_ifa) == NULL) {
+ panic("%s: unexpected (missing) refcnt ifa=%p", __func__,
+ &ia->ia_ifa);
+ /* NOTREACHED */
+ }
+}
+
+/*
+ * Caller must hold in_ifaddr_rwlock as writer.
+ */
+static void
+in_iahash_insert(struct in_ifaddr *ia)
+{
+ lck_rw_assert(in_ifaddr_rwlock, LCK_RW_ASSERT_EXCLUSIVE);
+ IFA_LOCK_ASSERT_HELD(&ia->ia_ifa);
+
+ if (ia->ia_addr.sin_family != AF_INET) {
+ panic("attempt to insert wrong ia %p into hash table\n", ia);
+ /* NOTREACHED */
+ } else if (IA_IS_HASHED(ia)) {
+ panic("attempt to double-insert ia %p into hash table\n", ia);
+ /* NOTREACHED */
+ }
+ TAILQ_INSERT_HEAD(INADDR_HASH(ia->ia_addr.sin_addr.s_addr),
+ ia, ia_hash);
+ IFA_ADDREF_LOCKED(&ia->ia_ifa);
+}
+
+/*
+ * Some point to point interfaces that are tunnels borrow the address from
+ * an underlying interface (e.g. VPN server). In order for source address
+ * selection logic to find the underlying interface first, we add the address
+ * of borrowing point to point interfaces at the end of the list.
+ * (see rdar://6733789)
+ *
+ * Caller must hold in_ifaddr_rwlock as writer.
+ */
+static void
+in_iahash_insert_ptp(struct in_ifaddr *ia)
+{
+ struct in_ifaddr *tmp_ifa;
+ struct ifnet *tmp_ifp;
+
+ lck_rw_assert(in_ifaddr_rwlock, LCK_RW_ASSERT_EXCLUSIVE);
+ IFA_LOCK_ASSERT_HELD(&ia->ia_ifa);
+
+ if (ia->ia_addr.sin_family != AF_INET) {
+ panic("attempt to insert wrong ia %p into hash table\n", ia);
+ /* NOTREACHED */
+ } else if (IA_IS_HASHED(ia)) {
+ panic("attempt to double-insert ia %p into hash table\n", ia);
+ /* NOTREACHED */
+ }
+ IFA_UNLOCK(&ia->ia_ifa);
+ TAILQ_FOREACH(tmp_ifa, INADDR_HASH(ia->ia_addr.sin_addr.s_addr),
+ ia_hash) {
+ IFA_LOCK(&tmp_ifa->ia_ifa);
+ /* ia->ia_addr won't change, so check without lock */
+ if (IA_SIN(tmp_ifa)->sin_addr.s_addr ==
+ ia->ia_addr.sin_addr.s_addr) {
+ IFA_UNLOCK(&tmp_ifa->ia_ifa);
+ break;
+ }
+ IFA_UNLOCK(&tmp_ifa->ia_ifa);
+ }
+ tmp_ifp = (tmp_ifa == NULL) ? NULL : tmp_ifa->ia_ifp;
+
+ IFA_LOCK(&ia->ia_ifa);
+ if (tmp_ifp == NULL) {
+ TAILQ_INSERT_HEAD(INADDR_HASH(ia->ia_addr.sin_addr.s_addr),
+ ia, ia_hash);
+ } else {
+ TAILQ_INSERT_TAIL(INADDR_HASH(ia->ia_addr.sin_addr.s_addr),
+ ia, ia_hash);
+ }
+ IFA_ADDREF_LOCKED(&ia->ia_ifa);
}
/*
* and routing table entry.
*/
static int
-in_ifinit(ifp, ia, sin, scrub)
- register struct ifnet *ifp;
- register struct in_ifaddr *ia;
- struct sockaddr_in *sin;
- int scrub;
+in_ifinit(struct ifnet *ifp, struct in_ifaddr *ia, struct sockaddr_in *sin,
+ int scrub)
{
- register u_long i = ntohl(sin->sin_addr.s_addr);
+ u_int32_t i = ntohl(sin->sin_addr.s_addr);
struct sockaddr_in oldaddr;
- int s = splimp(), flags = RTF_UP, error;
+ int flags = RTF_UP, error;
+ struct ifaddr *ifa0;
+ unsigned int cmd;
+ int oldremoved = 0;
+
+ /* Take an extra reference for this routine */
+ IFA_ADDREF(&ia->ia_ifa);
+ lck_rw_lock_exclusive(in_ifaddr_rwlock);
+ IFA_LOCK(&ia->ia_ifa);
oldaddr = ia->ia_addr;
+ if (IA_IS_HASHED(ia)) {
+ oldremoved = 1;
+ in_iahash_remove(ia);
+ }
ia->ia_addr = *sin;
+ /*
+ * Interface addresses should not contain port or sin_zero information.
+ */
+ SIN(&ia->ia_addr)->sin_family = AF_INET;
+ SIN(&ia->ia_addr)->sin_len = sizeof (struct sockaddr_in);
+ SIN(&ia->ia_addr)->sin_port = 0;
+ bzero(&SIN(&ia->ia_addr)->sin_zero, sizeof (sin->sin_zero));
+ if ((ifp->if_flags & IFF_POINTOPOINT))
+ in_iahash_insert_ptp(ia);
+ else
+ in_iahash_insert(ia);
+ IFA_UNLOCK(&ia->ia_ifa);
+ lck_rw_done(in_ifaddr_rwlock);
/*
- * Give the interface a chance to initialize
- * if this is its first address,
- * and to validate the address if necessary.
+ * Give the interface a chance to initialize if this is its first
+ * address, and to validate the address if necessary. Send down
+ * SIOCSIFADDR for first address, and SIOCAIFADDR for alias(es).
+ * We find the first IPV4 address assigned to it and check if this
+ * is the same as the one passed into this routine.
*/
- error = dlil_ioctl(PF_INET, ifp, SIOCSIFADDR, (caddr_t)ia);
+ ifa0 = ifa_ifpgetprimary(ifp, AF_INET);
+ cmd = (&ia->ia_ifa == ifa0) ? SIOCSIFADDR : SIOCAIFADDR;
+ error = ifnet_ioctl(ifp, PF_INET, cmd, ia);
if (error == EOPNOTSUPP)
- error = 0;
+ error = 0;
+ /*
+ * If we've just sent down SIOCAIFADDR, send another ioctl down
+ * for SIOCSIFADDR for the first IPV4 address of the interface,
+ * because an address change on one of the addresses will result
+ * in the removal of the previous first IPV4 address. KDP needs
+ * be reconfigured with the current primary IPV4 address.
+ */
+ if (error == 0 && cmd == SIOCAIFADDR) {
+ /*
+ * NOTE: SIOCSIFADDR is defined with struct ifreq
+ * as parameter, but here we are sending it down
+ * to the interface with a pointer to struct ifaddr,
+ * for legacy reasons.
+ */
+ error = ifnet_ioctl(ifp, PF_INET, SIOCSIFADDR, ifa0);
+ if (error == EOPNOTSUPP)
+ error = 0;
+ }
+
+ /* Release reference from ifa_ifpgetprimary() */
+ IFA_REMREF(ifa0);
+
if (error) {
- splx(s);
+ lck_rw_lock_exclusive(in_ifaddr_rwlock);
+ IFA_LOCK(&ia->ia_ifa);
+ if (IA_IS_HASHED(ia))
+ in_iahash_remove(ia);
ia->ia_addr = oldaddr;
+ if (oldremoved) {
+ if ((ifp->if_flags & IFF_POINTOPOINT))
+ in_iahash_insert_ptp(ia);
+ else
+ in_iahash_insert(ia);
+ }
+ IFA_UNLOCK(&ia->ia_ifa);
+ lck_rw_done(in_ifaddr_rwlock);
+ /* Release extra reference taken above */
+ IFA_REMREF(&ia->ia_ifa);
return (error);
}
- splx(s);
+ lck_mtx_lock(rnh_lock);
+ IFA_LOCK(&ia->ia_ifa);
+ /*
+ * Address has been initialized by the link resolver (ARP)
+ * via ifnet_ioctl() above; it may now generate route(s).
+ */
+ ia->ia_ifa.ifa_debug &= ~IFD_NOTREADY;
if (scrub) {
ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr;
- in_ifscrub(ifp, ia);
+ IFA_UNLOCK(&ia->ia_ifa);
+ in_ifscrub(ifp, ia, 1);
+ IFA_LOCK(&ia->ia_ifa);
ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
}
+ IFA_LOCK_ASSERT_HELD(&ia->ia_ifa);
if (IN_CLASSA(i))
ia->ia_netmask = IN_CLASSA_NET;
else if (IN_CLASSB(i))
ia->ia_ifa.ifa_metric = ifp->if_metric;
if (ifp->if_flags & IFF_BROADCAST) {
ia->ia_broadaddr.sin_addr.s_addr =
- htonl(ia->ia_subnet | ~ia->ia_subnetmask);
+ htonl(ia->ia_subnet | ~ia->ia_subnetmask);
ia->ia_netbroadcast.s_addr =
- htonl(ia->ia_net | ~ ia->ia_netmask);
+ htonl(ia->ia_net | ~ ia->ia_netmask);
} else if (ifp->if_flags & IFF_LOOPBACK) {
ia->ia_ifa.ifa_dstaddr = ia->ia_ifa.ifa_addr;
flags |= RTF_HOST;
} else if (ifp->if_flags & IFF_POINTOPOINT) {
- if (ia->ia_dstaddr.sin_family != AF_INET)
+ if (ia->ia_dstaddr.sin_family != AF_INET) {
+ IFA_UNLOCK(&ia->ia_ifa);
+ lck_mtx_unlock(rnh_lock);
+ /* Release extra reference taken above */
+ IFA_REMREF(&ia->ia_ifa);
return (0);
+ }
+ ia->ia_dstaddr.sin_len = sizeof (struct sockaddr_in);
flags |= RTF_HOST;
}
- if ((error = rtinit(&(ia->ia_ifa), (int)RTM_ADD, flags)) == 0)
+ IFA_UNLOCK(&ia->ia_ifa);
+
+ if ((error = rtinit_locked(&(ia->ia_ifa), (int)RTM_ADD, flags)) == 0) {
+ IFA_LOCK(&ia->ia_ifa);
ia->ia_flags |= IFA_ROUTE;
+ IFA_UNLOCK(&ia->ia_ifa);
+ }
+ lck_mtx_unlock(rnh_lock);
+
/* XXX check if the subnet route points to the same interface */
if (error == EEXIST)
error = 0;
* multicast group on that interface.
*/
if (ifp->if_flags & IFF_MULTICAST) {
- struct in_multi *inm;
struct in_addr addr;
+ lck_mtx_lock(&ifp->if_addrconfig_lock);
addr.s_addr = htonl(INADDR_ALLHOSTS_GROUP);
- IN_LOOKUP_MULTI(addr, ifp, inm);
- if (inm == 0)
- in_addmulti(&addr, ifp);
+ if (ifp->if_allhostsinm == NULL) {
+ struct in_multi *inm;
+ inm = in_addmulti(&addr, ifp);
+
+ if (inm != NULL) {
+ /*
+ * Keep the reference on inm added by
+ * in_addmulti above for storing the
+ * pointer in allhostsinm.
+ */
+ ifp->if_allhostsinm = inm;
+ } else {
+ printf("%s: failed to add membership to "
+ "all-hosts multicast address on %s\n",
+ __func__, if_name(ifp));
+ }
+ }
+ lck_mtx_unlock(&ifp->if_addrconfig_lock);
}
+
+ /* Release extra reference taken above */
+ IFA_REMREF(&ia->ia_ifa);
+
+ if (error == 0) {
+ /* invalidate route caches */
+ routegenid_inet_update();
+ }
+
return (error);
}
-
/*
- * Return 1 if the address might be a local broadcast address.
+ * Return TRUE if the address might be a local broadcast address.
*/
-int
-in_broadcast(in, ifp)
- struct in_addr in;
- struct ifnet *ifp;
+boolean_t
+in_broadcast(struct in_addr in, struct ifnet *ifp)
{
- register struct ifaddr *ifa;
- u_long t;
-
- if (in.s_addr == INADDR_BROADCAST ||
- in.s_addr == INADDR_ANY)
- return 1;
- if ((ifp->if_flags & IFF_BROADCAST) == 0)
- return 0;
+ struct ifaddr *ifa;
+ u_int32_t t;
+
+ if (in.s_addr == INADDR_BROADCAST || in.s_addr == INADDR_ANY)
+ return (TRUE);
+ if (!(ifp->if_flags & IFF_BROADCAST))
+ return (FALSE);
t = ntohl(in.s_addr);
+
/*
* Look through the list of addresses for a match
* with a broadcast address.
*/
-#define ia ((struct in_ifaddr *)ifa)
- for (ifa = ifp->if_addrhead.tqh_first; ifa;
- ifa = ifa->ifa_link.tqe_next) {
- if (ifa->ifa_addr == NULL)
- return (0);
+#define ia ((struct in_ifaddr *)ifa)
+ ifnet_lock_shared(ifp);
+ TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
+ IFA_LOCK(ifa);
if (ifa->ifa_addr->sa_family == AF_INET &&
(in.s_addr == ia->ia_broadaddr.sin_addr.s_addr ||
in.s_addr == ia->ia_netbroadcast.s_addr ||
* only exist when an interface gets a secondary
* address.
*/
- ia->ia_subnetmask != (u_long)0xffffffff)
- return 1;
+ ia->ia_subnetmask != (u_int32_t)0xffffffff) {
+ IFA_UNLOCK(ifa);
+ ifnet_lock_done(ifp);
+ return (TRUE);
+ }
+ IFA_UNLOCK(ifa);
}
- return (0);
+ ifnet_lock_done(ifp);
+ return (FALSE);
#undef ia
}
-/*
- * Add an address to the list of IP multicast addresses for a given interface.
- */
-struct in_multi *
-in_addmulti(ap, ifp)
- register struct in_addr *ap;
- register struct ifnet *ifp;
+
+void
+in_purgeaddrs(struct ifnet *ifp)
{
- register struct in_multi *inm;
- int error;
- struct sockaddr_in sin;
- struct ifmultiaddr *ifma;
- int s = splnet();
+ struct ifaddr **ifap;
+ int err, i;
- /*
- * Call generic routine to add membership or increment
- * refcount. It wants addresses in the form of a sockaddr,
- * so we build one here (being careful to zero the unused bytes).
- */
- bzero(&sin, sizeof sin);
- sin.sin_family = AF_INET;
- sin.sin_len = sizeof sin;
- sin.sin_addr = *ap;
- error = if_addmulti(ifp, (struct sockaddr *)&sin, &ifma);
- if (error) {
- splx(s);
- return 0;
- }
+ VERIFY(ifp != NULL);
/*
- * If ifma->ifma_protospec is null, then if_addmulti() created
- * a new record. Otherwise, we are done.
+ * Be nice, and try the civilized way first. If we can't get
+ * rid of them this way, then do it the rough way. We must
+ * only get here during detach time, after the ifnet has been
+ * removed from the global list and arrays.
*/
- if (ifma->ifma_protospec != 0) {
- splx(s);
- return ifma->ifma_protospec;
+ err = ifnet_get_address_list_family_internal(ifp, &ifap, AF_INET, 1,
+ M_WAITOK, 0);
+ if (err == 0 && ifap != NULL) {
+ struct ifreq ifr;
+
+ bzero(&ifr, sizeof (ifr));
+ (void) snprintf(ifr.ifr_name, sizeof (ifr.ifr_name),
+ "%s", if_name(ifp));
+
+ for (i = 0; ifap[i] != NULL; i++) {
+ struct ifaddr *ifa;
+
+ ifa = ifap[i];
+ IFA_LOCK(ifa);
+ bcopy(ifa->ifa_addr, &ifr.ifr_addr,
+ sizeof (struct sockaddr_in));
+ IFA_UNLOCK(ifa);
+ err = in_control(NULL, SIOCDIFADDR, (caddr_t)&ifr, ifp,
+ kernproc);
+ /* if we lost the race, ignore it */
+ if (err == EADDRNOTAVAIL)
+ err = 0;
+ if (err != 0) {
+ char s_addr[MAX_IPv4_STR_LEN];
+ char s_dstaddr[MAX_IPv4_STR_LEN];
+ struct in_addr *s, *d;
+
+ IFA_LOCK(ifa);
+ s = &((struct sockaddr_in *)
+ (void *)ifa->ifa_addr)->sin_addr;
+ d = &((struct sockaddr_in *)
+ (void *)ifa->ifa_dstaddr)->sin_addr;
+ (void) inet_ntop(AF_INET, &s->s_addr, s_addr,
+ sizeof (s_addr));
+ (void) inet_ntop(AF_INET, &d->s_addr, s_dstaddr,
+ sizeof (s_dstaddr));
+ IFA_UNLOCK(ifa);
+
+ printf("%s: SIOCDIFADDR ifp=%s ifa_addr=%s "
+ "ifa_dstaddr=%s (err=%d)\n", __func__,
+ ifp->if_xname, s_addr, s_dstaddr, err);
+ }
+ }
+ ifnet_free_address_list(ifap);
+ } else if (err != 0 && err != ENXIO) {
+ printf("%s: error retrieving list of AF_INET addresses for "
+ "ifp=%s (err=%d)\n", __func__, ifp->if_xname, err);
}
+}
- inm = (struct in_multi *) _MALLOC(sizeof(*inm), M_IPMADDR, M_WAITOK);
- if (inm == NULL) {
- splx(s);
- return (NULL);
+/*
+ * Select endpoint address(es). For now just take the first matching
+ * address and discard the rest, if present.
+ */
+int
+in_selectaddrs(int af, struct sockaddr_list **src_sl,
+ struct sockaddr_entry **src_se, struct sockaddr_list **dst_sl,
+ struct sockaddr_entry **dst_se)
+{
+ struct sockaddr_entry *se = NULL;
+ struct sockaddr_entry *tse = NULL;
+ int error = 0;
+
+ VERIFY(src_sl != NULL && dst_sl != NULL && *dst_sl != NULL);
+ VERIFY(src_se != NULL && dst_se != NULL);
+
+ *src_se = *dst_se = NULL;
+
+ /* pick a source address, if available */
+ if (*src_sl != NULL) {
+ TAILQ_FOREACH(se, &(*src_sl)->sl_head, se_link) {
+ VERIFY(se->se_addr != NULL);
+ /*
+ * Take the first source address, or the first
+ * one with matching address family.
+ */
+ if (af == AF_UNSPEC || se->se_addr->sa_family == af) {
+ sockaddrlist_remove(*src_sl, se);
+ *src_se = se;
+ break;
+ }
+ }
+ /* get rid of the rest */
+ TAILQ_FOREACH_SAFE(se, &(*src_sl)->sl_head, se_link, tse) {
+ sockaddrlist_remove(*src_sl, se);
+ sockaddrentry_free(se);
+ }
+ if (*src_se != NULL) {
+ /* insert the first src address back in */
+ sockaddrlist_insert(*src_sl, *src_se);
+ VERIFY((*src_sl)->sl_cnt == 1);
+ /* destination address must be of this family */
+ af = (*src_se)->se_addr->sa_family;
+ } else {
+ /* no usable source address with matching family */
+ VERIFY(af != AF_UNSPEC);
+ error = EAFNOSUPPORT;
+ goto out;
+ }
+ }
+ /* pick a (matching) destination address */
+ TAILQ_FOREACH(se, &(*dst_sl)->sl_head, se_link) {
+ VERIFY(se->se_addr != NULL);
+ /*
+ * Take the first destination address; if source is specified,
+ * find one which uses the same address family.
+ */
+ if (af == AF_UNSPEC || se->se_addr->sa_family == af) {
+ sockaddrlist_remove(*dst_sl, se);
+ *dst_se = se;
+ break;
+ }
+ }
+ /* get rid of the rest */
+ TAILQ_FOREACH_SAFE(se, &(*dst_sl)->sl_head, se_link, tse) {
+ sockaddrlist_remove(*dst_sl, se);
+ sockaddrentry_free(se);
+ }
+ if (*dst_se != NULL) {
+ /* insert the first dst address back in */
+ sockaddrlist_insert(*dst_sl, *dst_se);
+ VERIFY((*dst_sl)->sl_cnt == 1);
+ } else {
+ /* source and destination address families don't match */
+ error = EAFNOSUPPORT;
+ goto out;
}
- bzero(inm, sizeof *inm);
- inm->inm_addr = *ap;
- inm->inm_ifp = ifp;
- inm->inm_ifma = ifma;
- ifma->ifma_protospec = inm;
- LIST_INSERT_HEAD(&in_multihead, inm, inm_link);
+ af = (*dst_se)->se_addr->sa_family;
+ VERIFY(*src_se == NULL || (*src_se)->se_addr->sa_family == af);
- /*
- * Let IGMP know that we have joined a new IP multicast group.
- */
- error = igmp_joingroup(inm);
- if (error) {
- if_delmultiaddr(ifma);
- LIST_REMOVE(inm, inm_link);
- _FREE(inm, M_IPMADDR);
- inm = NULL;
+ /* verify address length */
+ switch (af) {
+ case AF_INET:
+ if ((*dst_se)->se_addr->sa_len !=
+ sizeof (struct sockaddr_in)) {
+ error = EAFNOSUPPORT;
+ goto out;
+ }
+ break;
+#if INET6
+ case AF_INET6:
+ if ((*dst_se)->se_addr->sa_len !=
+ sizeof (struct sockaddr_in6)) {
+ error = EAFNOSUPPORT;
+ goto out;
+ }
+ break;
+#endif /* INET6 */
+ default:
+ error = EAFNOSUPPORT;
+ goto out;
+ }
+
+ /* if source address is specified, length must match destination */
+ if (*src_se != NULL && (*src_se)->se_addr->sa_len !=
+ (*dst_se)->se_addr->sa_len) {
+ error = EAFNOSUPPORT;
+ goto out;
}
- splx(s);
- return (inm);
+out:
+ return (error);
}
/*
- * Delete a multicast address record.
+ * Called as part of ip_init
*/
void
-in_delmulti(inm)
- register struct in_multi *inm;
+in_ifaddr_init(void)
{
- struct ifmultiaddr *ifma = inm->inm_ifma;
- int s = splnet();
-
- /* We intentionally do this a bit differently than BSD */
+ in_multi_init();
- if (ifma && ifma->ifma_refcount == 1) {
- /*
- * No remaining claims to this record; let IGMP know that
- * we are leaving the multicast group.
- */
- igmp_leavegroup(inm);
- ifma->ifma_protospec = 0;
- LIST_REMOVE(inm, inm_link);
- FREE(inm, M_IPMADDR);
+ PE_parse_boot_argn("ifa_debug", &inifa_debug, sizeof (inifa_debug));
+
+ inifa_size = (inifa_debug == 0) ? sizeof (struct in_ifaddr) :
+ sizeof (struct in_ifaddr_dbg);
+
+ inifa_zone = zinit(inifa_size, INIFA_ZONE_MAX * inifa_size,
+ 0, INIFA_ZONE_NAME);
+ if (inifa_zone == NULL) {
+ panic("%s: failed allocating %s", __func__, INIFA_ZONE_NAME);
+ /* NOTREACHED */
+ }
+ zone_change(inifa_zone, Z_EXPAND, TRUE);
+ zone_change(inifa_zone, Z_CALLERACCT, FALSE);
+
+ lck_mtx_init(&inifa_trash_lock, ifa_mtx_grp, ifa_mtx_attr);
+ TAILQ_INIT(&inifa_trash_head);
+}
+
+static struct in_ifaddr *
+in_ifaddr_alloc(int how)
+{
+ struct in_ifaddr *inifa;
+
+ inifa = (how == M_WAITOK) ? zalloc(inifa_zone) :
+ zalloc_noblock(inifa_zone);
+ if (inifa != NULL) {
+ bzero(inifa, inifa_size);
+ inifa->ia_ifa.ifa_free = in_ifaddr_free;
+ inifa->ia_ifa.ifa_debug |= IFD_ALLOC;
+ ifa_lock_init(&inifa->ia_ifa);
+ if (inifa_debug != 0) {
+ struct in_ifaddr_dbg *inifa_dbg =
+ (struct in_ifaddr_dbg *)inifa;
+ inifa->ia_ifa.ifa_debug |= IFD_DEBUG;
+ inifa->ia_ifa.ifa_trace = in_ifaddr_trace;
+ inifa->ia_ifa.ifa_attached = in_ifaddr_attached;
+ inifa->ia_ifa.ifa_detached = in_ifaddr_detached;
+ ctrace_record(&inifa_dbg->inifa_alloc);
+ }
+ }
+ return (inifa);
+}
+
+static void
+in_ifaddr_free(struct ifaddr *ifa)
+{
+ IFA_LOCK_ASSERT_HELD(ifa);
+
+ if (ifa->ifa_refcnt != 0) {
+ panic("%s: ifa %p bad ref cnt", __func__, ifa);
+ /* NOTREACHED */
+ } if (!(ifa->ifa_debug & IFD_ALLOC)) {
+ panic("%s: ifa %p cannot be freed", __func__, ifa);
+ /* NOTREACHED */
+ }
+ if (ifa->ifa_debug & IFD_DEBUG) {
+ struct in_ifaddr_dbg *inifa_dbg = (struct in_ifaddr_dbg *)ifa;
+ ctrace_record(&inifa_dbg->inifa_free);
+ bcopy(&inifa_dbg->inifa, &inifa_dbg->inifa_old,
+ sizeof (struct in_ifaddr));
+ if (ifa->ifa_debug & IFD_TRASHED) {
+ /* Become a regular mutex, just in case */
+ IFA_CONVERT_LOCK(ifa);
+ lck_mtx_lock(&inifa_trash_lock);
+ TAILQ_REMOVE(&inifa_trash_head, inifa_dbg,
+ inifa_trash_link);
+ lck_mtx_unlock(&inifa_trash_lock);
+ ifa->ifa_debug &= ~IFD_TRASHED;
+ }
+ }
+ IFA_UNLOCK(ifa);
+ ifa_lock_destroy(ifa);
+ bzero(ifa, sizeof (struct in_ifaddr));
+ zfree(inifa_zone, ifa);
+}
+
+static void
+in_ifaddr_attached(struct ifaddr *ifa)
+{
+ struct in_ifaddr_dbg *inifa_dbg = (struct in_ifaddr_dbg *)ifa;
+
+ IFA_LOCK_ASSERT_HELD(ifa);
+
+ if (!(ifa->ifa_debug & IFD_DEBUG)) {
+ panic("%s: ifa %p has no debug structure", __func__, ifa);
+ /* NOTREACHED */
+ }
+ if (ifa->ifa_debug & IFD_TRASHED) {
+ /* Become a regular mutex, just in case */
+ IFA_CONVERT_LOCK(ifa);
+ lck_mtx_lock(&inifa_trash_lock);
+ TAILQ_REMOVE(&inifa_trash_head, inifa_dbg, inifa_trash_link);
+ lck_mtx_unlock(&inifa_trash_lock);
+ ifa->ifa_debug &= ~IFD_TRASHED;
+ }
+}
+
+static void
+in_ifaddr_detached(struct ifaddr *ifa)
+{
+ struct in_ifaddr_dbg *inifa_dbg = (struct in_ifaddr_dbg *)ifa;
+
+ IFA_LOCK_ASSERT_HELD(ifa);
+
+ if (!(ifa->ifa_debug & IFD_DEBUG)) {
+ panic("%s: ifa %p has no debug structure", __func__, ifa);
+ /* NOTREACHED */
+ } else if (ifa->ifa_debug & IFD_TRASHED) {
+ panic("%s: ifa %p is already in trash list", __func__, ifa);
+ /* NOTREACHED */
}
- /* XXX - should be separate API for when we have an ifma? */
- if (ifma)
- if_delmultiaddr(ifma);
- splx(s);
+ ifa->ifa_debug |= IFD_TRASHED;
+ /* Become a regular mutex, just in case */
+ IFA_CONVERT_LOCK(ifa);
+ lck_mtx_lock(&inifa_trash_lock);
+ TAILQ_INSERT_TAIL(&inifa_trash_head, inifa_dbg, inifa_trash_link);
+ lck_mtx_unlock(&inifa_trash_lock);
+}
+
+static void
+in_ifaddr_trace(struct ifaddr *ifa, int refhold)
+{
+ struct in_ifaddr_dbg *inifa_dbg = (struct in_ifaddr_dbg *)ifa;
+ ctrace_t *tr;
+ u_int32_t idx;
+ u_int16_t *cnt;
+
+ if (!(ifa->ifa_debug & IFD_DEBUG)) {
+ panic("%s: ifa %p has no debug structure", __func__, ifa);
+ /* NOTREACHED */
+ }
+ if (refhold) {
+ cnt = &inifa_dbg->inifa_refhold_cnt;
+ tr = inifa_dbg->inifa_refhold;
+ } else {
+ cnt = &inifa_dbg->inifa_refrele_cnt;
+ tr = inifa_dbg->inifa_refrele;
+ }
+
+ idx = atomic_add_16_ov(cnt, 1) % INIFA_TRACE_HIST_SIZE;
+ ctrace_record(&tr[idx]);
+}
+
+/*
+ * Handle SIOCGASSOCIDS ioctl for PF_INET domain.
+ */
+static int
+in_getassocids(struct socket *so, uint32_t *cnt, user_addr_t aidp)
+{
+ struct inpcb *inp = sotoinpcb(so);
+ sae_associd_t aid;
+
+ if (inp == NULL || inp->inp_state == INPCB_STATE_DEAD)
+ return (EINVAL);
+
+ /* INPCB has no concept of association */
+ aid = SAE_ASSOCID_ANY;
+ *cnt = 0;
+
+ /* just asking how many there are? */
+ if (aidp == USER_ADDR_NULL)
+ return (0);
+
+ return (copyout(&aid, aidp, sizeof (aid)));
+}
+
+/*
+ * Handle SIOCGCONNIDS ioctl for PF_INET domain.
+ */
+static int
+in_getconnids(struct socket *so, sae_associd_t aid, uint32_t *cnt,
+ user_addr_t cidp)
+{
+ struct inpcb *inp = sotoinpcb(so);
+ sae_connid_t cid;
+
+ if (inp == NULL || inp->inp_state == INPCB_STATE_DEAD)
+ return (EINVAL);
+
+ if (aid != SAE_ASSOCID_ANY && aid != SAE_ASSOCID_ALL)
+ return (EINVAL);
+
+ /* if connected, return 1 connection count */
+ *cnt = ((so->so_state & SS_ISCONNECTED) ? 1 : 0);
+
+ /* just asking how many there are? */
+ if (cidp == USER_ADDR_NULL)
+ return (0);
+
+ /* if INPCB is connected, assign it connid 1 */
+ cid = ((*cnt != 0) ? 1 : SAE_CONNID_ANY);
+
+ return (copyout(&cid, cidp, sizeof (cid)));
+}
+
+/*
+ * Handle SIOCGCONNINFO ioctl for PF_INET domain.
+ */
+static int
+in_getconninfo(struct socket *so, sae_connid_t cid, uint32_t *flags,
+ uint32_t *ifindex, int32_t *soerror, user_addr_t src, socklen_t *src_len,
+ user_addr_t dst, socklen_t *dst_len, uint32_t *aux_type,
+ user_addr_t aux_data, uint32_t *aux_len)
+{
+#pragma unused(aux_data)
+ struct inpcb *inp = sotoinpcb(so);
+ struct sockaddr_in sin;
+ struct ifnet *ifp = NULL;
+ int error = 0;
+ u_int32_t copy_len = 0;
+
+ /*
+ * Don't test for INPCB_STATE_DEAD since this may be called
+ * after SOF_PCBCLEARING is set, e.g. after tcp_close().
+ */
+ if (inp == NULL) {
+ error = EINVAL;
+ goto out;
+ }
+
+ if (cid != SAE_CONNID_ANY && cid != SAE_CONNID_ALL && cid != 1) {
+ error = EINVAL;
+ goto out;
+ }
+
+ ifp = inp->inp_last_outifp;
+ *ifindex = ((ifp != NULL) ? ifp->if_index : 0);
+ *soerror = so->so_error;
+ *flags = 0;
+ if (so->so_state & SS_ISCONNECTED)
+ *flags |= (CIF_CONNECTED | CIF_PREFERRED);
+ if (inp->inp_flags & INP_BOUND_IF)
+ *flags |= CIF_BOUND_IF;
+ if (!(inp->inp_flags & INP_INADDR_ANY))
+ *flags |= CIF_BOUND_IP;
+ if (!(inp->inp_flags & INP_ANONPORT))
+ *flags |= CIF_BOUND_PORT;
+
+ bzero(&sin, sizeof (sin));
+ sin.sin_len = sizeof (sin);
+ sin.sin_family = AF_INET;
+
+ /* source address and port */
+ sin.sin_port = inp->inp_lport;
+ sin.sin_addr.s_addr = inp->inp_laddr.s_addr;
+ if (*src_len == 0) {
+ *src_len = sin.sin_len;
+ } else {
+ if (src != USER_ADDR_NULL) {
+ copy_len = min(*src_len, sizeof (sin));
+ error = copyout(&sin, src, copy_len);
+ if (error != 0)
+ goto out;
+ *src_len = copy_len;
+ }
+ }
+
+ /* destination address and port */
+ sin.sin_port = inp->inp_fport;
+ sin.sin_addr.s_addr = inp->inp_faddr.s_addr;
+ if (*dst_len == 0) {
+ *dst_len = sin.sin_len;
+ } else {
+ if (dst != USER_ADDR_NULL) {
+ copy_len = min(*dst_len, sizeof (sin));
+ error = copyout(&sin, dst, copy_len);
+ if (error != 0)
+ goto out;
+ *dst_len = copy_len;
+ }
+ }
+
+ *aux_type = 0;
+ *aux_len = 0;
+ if (SOCK_PROTO(so) == IPPROTO_TCP) {
+ struct conninfo_tcp tcp_ci;
+
+ *aux_type = CIAUX_TCP;
+ if (*aux_len == 0) {
+ *aux_len = sizeof (tcp_ci);
+ } else {
+ if (aux_data != USER_ADDR_NULL) {
+ copy_len = min(*aux_len, sizeof (tcp_ci));
+ bzero(&tcp_ci, sizeof (tcp_ci));
+ tcp_getconninfo(so, &tcp_ci);
+ error = copyout(&tcp_ci, aux_data, copy_len);
+ if (error != 0)
+ goto out;
+ *aux_len = copy_len;
+ }
+ }
+ }
+
+out:
+ return (error);
}
projects / apple / xnu.git / blobdiff