*
* @APPLE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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@
*/
* 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 <net/if.h>
-#include <net/route.h>
-#if NGIF > 0
-#include "gif.h"
#include <net/if_types.h>
-#include <net/if_gif.h>
-#endif
+#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <sys/file.h>
-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 *));
+static int in_mask2len(struct in_addr *);
+static void in_len2mask(struct in_addr *, int);
+static int in_lifaddr_ioctl(struct socket *, u_long, caddr_t,
+ struct ifnet *, struct proc *);
-static void in_socktrim __P((struct sockaddr_in *));
-static int in_ifinit __P((struct ifnet *,
- struct in_ifaddr *, struct sockaddr_in *, int));
+static void in_socktrim(struct sockaddr_in *);
+static int in_ifinit(struct ifnet *,
+ struct in_ifaddr *, struct sockaddr_in *, int);
static int subnetsarelocal = 0;
SYSCTL_INT(_net_inet_ip, OID_AUTO, subnets_are_local, CTLFLAG_RW,
struct in_multihead in_multihead; /* XXX BSS initialization */
-extern void arp_rtrequest();
-extern int ether_detach_inet(struct ifnet *ifp);
+extern lck_mtx_t *rt_mtx;
+/* Track whether or not the SIOCARPIPLL ioctl has been called */
+__private_extern__ u_int32_t ipv4_ll_arp_aware = 0;
/*
* Return 1 if an internet address is for a ``local'' host
in_localaddr(in)
struct in_addr in;
{
- register u_long i = ntohl(in.s_addr);
- register struct in_ifaddr *ia;
+ u_long i = ntohl(in.s_addr);
+ struct in_ifaddr *ia;
if (subnetsarelocal) {
+ lck_mtx_lock(rt_mtx);
for (ia = in_ifaddrhead.tqh_first; ia;
ia = ia->ia_link.tqe_next)
- if ((i & ia->ia_netmask) == ia->ia_net)
+ if ((i & ia->ia_netmask) == ia->ia_net) {
+ lck_mtx_unlock(rt_mtx);
return (1);
+ }
+ lck_mtx_unlock(rt_mtx);
} else {
+ lck_mtx_lock(rt_mtx);
for (ia = in_ifaddrhead.tqh_first; ia;
ia = ia->ia_link.tqe_next)
- if ((i & ia->ia_subnetmask) == ia->ia_subnet)
+ if ((i & ia->ia_subnetmask) == ia->ia_subnet) {
+ lck_mtx_unlock(rt_mtx);
return (1);
+ }
+ lck_mtx_unlock(rt_mtx);
}
return (0);
}
in_canforward(in)
struct in_addr in;
{
- register u_long i = ntohl(in.s_addr);
- register u_long net;
+ u_long i = ntohl(in.s_addr);
+ u_long net;
if (IN_EXPERIMENTAL(i) || IN_MULTICAST(i))
return (0);
in_socktrim(ap)
struct sockaddr_in *ap;
{
- register char *cplim = (char *) &ap->sin_addr;
- register char *cp = (char *) (&ap->sin_addr + 1);
+ char *cplim = (char *) &ap->sin_addr;
+ char *cp = (char *) (&ap->sin_addr + 1);
ap->sin_len = 0;
while (--cp >= cplim)
*/
/* 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;
+in_control(
+ struct socket *so,
+ u_long cmd,
+ caddr_t data,
+ 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 ifreq *ifr = (struct ifreq *)data;
+ struct in_ifaddr *ia = 0, *iap;
+ 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;
+ int error, hostIsNew, maskIsNew;
+ u_long i;
struct kev_msg ev_msg;
struct kev_in_data in_event_data;
-#if NGIF > 0
- if (ifp && ifp->if_type == IFT_GIF) {
- switch (cmd) {
- case SIOCSIFPHYADDR:
-#if 1
- if (p &&
- (error = suser(p->p_ucred, &p->p_acflag)) != 0)
- return(error);
-#else
- if ((so->so_state & SS_PRIV) == 0)
- return (EPERM);
-#endif
- case SIOCGIFPSRCADDR:
- case SIOCGIFPDSTADDR:
-#if NGIF > 0
- if (strcmp(ifp->if_name, "gif") == 0)
- dl_tag = gif_attach_inet(ifp);
- return gif_ioctl(ifp, cmd, data);
-#endif
- }
- }
-#endif
-#if NFAITH > 0
- if (ifp && ifp->if_type == IFT_FAITH)
- dl_tag = faith_attach_inet(ifp);
-#endif
switch (cmd) {
case SIOCALIFADDR:
case SIOCDLIFADDR:
-#if 1
- if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
+ if (p && (error = proc_suser(p)) != 0)
return error;
-#else
- if ((so->so_state & SS_PRIV) == 0)
- return (EPERM);
-#endif
/*fall through*/
case SIOCGLIFADDR:
if (!ifp)
* If an alias address was specified, find that one instead of
* the first one on the interface.
*/
- if (ifp)
+ if (ifp) {
+ lck_mtx_lock(rt_mtx);
for (iap = in_ifaddrhead.tqh_first; iap;
iap = iap->ia_link.tqe_next)
if (iap->ia_ifp == ifp) {
break;
}
}
-
+ lck_mtx_unlock(rt_mtx);
+ }
switch (cmd) {
case SIOCAUTOADDR:
-#if 1
- if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
+ case SIOCARPIPLL:
+ if (p && (error = proc_suser(p)) != 0)
return error;
-#else
- if ((so->so_state & SS_PRIV) == 0)
- return (EPERM);
-#endif
break;
case SIOCAIFADDR:
if (ifp == 0)
return (EADDRNOTAVAIL);
if (ifra->ifra_addr.sin_family == AF_INET) {
+ lck_mtx_lock(rt_mtx);
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;
}
+ lck_mtx_unlock(rt_mtx);
if ((ifp->if_flags & IFF_POINTOPOINT)
&& (cmd == SIOCAIFADDR)
&& (ifra->ifra_dstaddr.sin_addr.s_addr
case SIOCSIFADDR:
case SIOCSIFNETMASK:
case SIOCSIFDSTADDR:
-
-#if ISFB31
- if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
- return error;
-#else
if ((so->so_state & SS_PRIV) == 0)
return (EPERM);
-#endif
if (ifp == 0)
return (EADDRNOTAVAIL);
* 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);
-/*
- * Temorary code for protocol attachment XXX
- */
-
- if (strcmp(ifp->if_name, "en") == 0)
- dl_tag = ether_attach_inet(ifp);
-
- if (strcmp(ifp->if_name, "lo") == 0)
- dl_tag = lo_attach_inet(ifp);
-/* End of temp code */
-
- ifa->ifa_dlt = dl_tag;
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;
+ ifnet_lock_exclusive(ifp);
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);
+ if_attach_ifa(ifp, ifa);
+ ifnet_lock_done(ifp);
+
+ lck_mtx_lock(rt_mtx);
+ TAILQ_INSERT_TAIL(&in_ifaddrhead, ia, ia_link);
+ lck_mtx_unlock(rt_mtx);
+
+ /* Generic protocol plumbing */
+
+ if (error = dlil_plumb_protocol(PF_INET, ifp)) {
+ 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 */
+ }
+
}
break;
case SIOCPROTOATTACH:
case SIOCPROTODETACH:
- if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
- return error;
+ if (p && (error = proc_suser(p)) != 0)
+ return error;
if (ifp == 0)
return (EADDRNOTAVAIL);
- if (strcmp(ifp->if_name, "en"))
- return ENODEV;
- break;
+ break;
case SIOCSIFBRDADDR:
-#if ISFB31
- if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
- return error;
-#else
+#ifdef __APPLE__
if ((so->so_state & SS_PRIV) == 0)
return (EPERM);
+#else
+ if (p && (error = suser(p)) != 0)
+ return error;
#endif
/* FALLTHROUGH */
case SIOCAUTOADDR:
if (ifp == 0)
return (EADDRNOTAVAIL);
- if (ifr->ifr_data)
+ ifnet_lock_exclusive(ifp);
+ if (ifr->ifr_intval)
ifp->if_eflags |= IFEF_AUTOCONFIGURING;
else
ifp->if_eflags &= ~IFEF_AUTOCONFIGURING;
+ ifnet_lock_done(ifp);
+ break;
+
+ case SIOCARPIPLL:
+ if (ifp == 0)
+ return (EADDRNOTAVAIL);
+ ipv4_ll_arp_aware = 1;
+ ifnet_lock_exclusive(ifp);
+ if (ifr->ifr_data)
+ ifp->if_eflags |= IFEF_ARPLL;
+ else
+ ifp->if_eflags &= ~IFEF_ARPLL;
+ ifnet_lock_done(ifp);
break;
case SIOCGIFADDR:
(struct sockaddr_in *) &ifr->ifr_addr, 1));
case SIOCPROTOATTACH:
- ether_attach_inet(ifp);
+ error = dlil_plumb_protocol(PF_INET, ifp);
+ 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;
- return ether_detach_inet(ifp);
+ ifnet_lock_shared(ifp);
+ TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
+ if (ifa->ifa_addr->sa_family == AF_INET)
+ break;
+ ifnet_lock_done(ifp);
+ if (ifa != 0)
+ return EBUSY;
+
+ error = dlil_unplumb_protocol(PF_INET, ifp);
+ if (error)
+ return(error);
+ break;
+
case SIOCSIFNETMASK:
i = ifra->ifra_addr.sin_addr.s_addr;
hostIsNew = 0;
}
if (ifra->ifra_mask.sin_len) {
- in_ifscrub(ifp, ia);
+ in_ifscrub(ifp, ia, 0);
ia->ia_sockmask = ifra->ifra_mask;
ia->ia_subnetmask =
ntohl(ia->ia_sockmask.sin_addr.s_addr);
}
if ((ifp->if_flags & IFF_POINTOPOINT) &&
(ifra->ifra_dstaddr.sin_family == AF_INET)) {
- in_ifscrub(ifp, ia);
+ in_ifscrub(ifp, ia, 0);
ia->ia_dstaddr = ifra->ifra_dstaddr;
maskIsNew = 1; /* We lie; but the effect's the same */
}
* Report event.
*/
- if (error == 0) {
+ 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;
return (error);
case SIOCDIFADDR:
+ error = dlil_ioctl(PF_INET, ifp, SIOCDIFADDR, (caddr_t)ia);
+ if (error == EOPNOTSUPP)
+ error = 0;
+ if (error)
+ return error;
+
+ /* 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;
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[0].data_length = sizeof(struct kev_in_data);
ev_msg.dv[1].data_length = 0;
- kev_post_msg(&ev_msg);
-
- in_ifscrub(ifp, ia);
+ lck_mtx_lock(rt_mtx);
+ TAILQ_REMOVE(&in_ifaddrhead, ia, ia_link);
/*
- * Protect from ipintr() traversing address list
- * while we're modifying it.
+ * in_ifscrub kills the interface route.
*/
- s = splnet();
-
+ in_ifscrub(ifp, ia, 1);
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);
-
- /*
- * 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)
- break;
-
- if (ifa == 0) {
- addr.s_addr = htonl(INADDR_ALLHOSTS_GROUP);
- IN_LOOKUP_MULTI(addr, ifp, inm);
- if (inm)
- in_delmulti(inm);
- }
- }
- splx(s);
+ lck_mtx_unlock(rt_mtx);
+ ifnet_lock_exclusive(ifp);
+ if_detach_ifa(ifp, ifa);
+ ifafree(&ia->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)
+ break;
+
+ if (ifa == 0) {
+ addr.s_addr = htonl(INADDR_ALLHOSTS_GROUP);
+ IN_LOOKUP_MULTI(addr, ifp, inm);
+ }
+ ifnet_lock_done(ifp);
+ if (inm)
+ in_delmulti(&inm);
+ } else
+ ifnet_lock_done(ifp);
+#endif
+
+ /* Post the kernel event */
+ kev_post_msg(&ev_msg);
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 error2 = 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);
+ error2 = file_socket(cloned_fd, &cloned_so);
+ if (error2){
break;
}
- cloned_so = (struct socket *)cloned_fp->f_data;
cloned_inp = sotoinpcb(cloned_so);
+ file_drop(cloned_fd);
} else {
cloned_inp = NULL;
}
/* Multicast options */
if (cloned_inp->inp_moptions != NULL) {
- int i;
+ int i;
struct ip_moptions *cloned_imo = cloned_inp->inp_moptions;
struct ip_moptions *imo = inp->inp_moptions;
* 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;
+ error2 = ENOBUFS;
break;
}
- s = splnet(); /* XXX */
inp->inp_moptions = imo;
}
imo->imo_multicast_ifp = cloned_imo->imo_multicast_ifp;
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) {
+ error2 = ENOBUFS;
+ break;
+ }
+ }
+ if (i < cloned_imo->imo_num_memberships) {
+ /* Failed, perform cleanup */
+ for (i--; i >= 0; i--)
+ in_delmulti(&imo->imo_membership[i]);
+ imo->imo_num_memberships = 0;
+ break;
}
}
}
- splx(s);
break;
}
+#endif /* __APPLE__ */
default:
- return EOPNOTSUPP;
-
+ return EOPNOTSUPP;
}
return (0);
}
/*
* SIOC[GAD]LIFADDR.
- * SIOCGLIFADDR: get first address. (???)
+ * SIOCGLIFADDR: get first address. (?!?)
* SIOCGLIFADDR with IFLR_PREFIX:
* get first address that matches the specified prefix.
* SIOCALIFADDR: add the specified address.
* other values may be returned from in_ioctl()
*/
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;
+in_lifaddr_ioctl(
+ struct socket *so,
+ u_long cmd,
+ caddr_t data,
+ struct ifnet *ifp,
+ struct proc *p)
{
struct if_laddrreq *iflr = (struct if_laddrreq *)data;
struct ifaddr *ifa;
return EINVAL;
break;
default: /*shouldn't happen*/
-#if 0
- panic("invalid cmd to in_lifaddr_ioctl");
- /*NOTREACHED*/
-#else
return EOPNOTSUPP;
-#endif
}
if (sizeof(struct in_addr) * 8 < iflr->prefixlen)
return EINVAL;
}
}
+ ifnet_lock_shared(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
if (ifa->ifa_addr->sa_family != AF_INET6)
continue;
if (candidate.s_addr == match.s_addr)
break;
}
+ ifnet_lock_done(ifp);
if (!ifa)
return EADDRNOTAVAIL;
ia = (struct in_ifaddr *)ifa;
* 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)
return;
+ if (!locked)
+ lck_mtx_lock(rt_mtx);
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);
ia->ia_flags &= ~IFA_ROUTE;
+ if (!locked)
+ lck_mtx_unlock(rt_mtx);
}
/*
* 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_long i = ntohl(sin->sin_addr.s_addr);
struct sockaddr_in oldaddr;
- int s = splimp(), flags = RTF_UP, error;
- u_long dl_tag;
-
-
+ int flags = RTF_UP, error;
oldaddr = ia->ia_addr;
ia->ia_addr = *sin;
-
+ /*
+ * Give the interface a chance to initialize
+ * if this is its first address,
+ * and to validate the address if necessary.
+ */
error = dlil_ioctl(PF_INET, ifp, SIOCSIFADDR, (caddr_t)ia);
if (error == EOPNOTSUPP)
error = 0;
-
if (error) {
- splx(s);
ia->ia_addr = oldaddr;
return (error);
}
-
- splx(s);
if (scrub) {
ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr;
- in_ifscrub(ifp, ia);
+ in_ifscrub(ifp, ia, 0);
ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
}
if (IN_CLASSA(i))
}
if ((error = rtinit(&(ia->ia_ifa), (int)RTM_ADD, flags)) == 0)
ia->ia_flags |= IFA_ROUTE;
+ /* XXX check if the subnet route points to the same interface */
+ if (error == EEXIST)
+ error = 0;
/*
* If the interface supports multicast, join the "all hosts"
* multicast group on that interface.
*/
if (ifp->if_flags & IFF_MULTICAST) {
- struct in_multi *inm;
+ struct in_multi *inm;
struct in_addr addr;
addr.s_addr = htonl(INADDR_ALLHOSTS_GROUP);
- IN_LOOKUP_MULTI(addr, ifp, inm);
- if (inm == 0)
- in_addmulti(&addr, ifp);
+ ifnet_lock_shared(ifp);
+ IN_LOOKUP_MULTI(addr, ifp, inm);
+ ifnet_lock_done(ifp);
+ if (inm == 0)
+ in_addmulti(&addr, ifp);
}
return (error);
}
* Return 1 if the address might be a local broadcast address.
*/
int
-in_broadcast(in, ifp)
- struct in_addr in;
- struct ifnet *ifp;
+in_broadcast(
+ struct in_addr in,
+ struct ifnet *ifp)
{
- register struct ifaddr *ifa;
+ struct ifaddr *ifa;
u_long t;
if (in.s_addr == INADDR_BROADCAST ||
* 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)
+ ifnet_lock_shared(ifp);
+ TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
+ if (ifa->ifa_addr == NULL) {
+ ifnet_lock_done(ifp);
return (0);
+ }
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_long)0xffffffff) {
+ ifnet_lock_done(ifp);
+ return 1;
+ }
}
+ ifnet_lock_done(ifp);
return (0);
#undef ia
}
+
+static void
+in_free_inm(
+ void* ifma_protospec)
+{
+ struct in_multi *inm = ifma_protospec;
+
+ /*
+ * No remaining claims to this record; let IGMP know that
+ * we are leaving the multicast group.
+ */
+ igmp_leavegroup(inm);
+ lck_mtx_lock(rt_mtx);
+ LIST_REMOVE(inm, inm_link);
+ lck_mtx_unlock(rt_mtx);
+ FREE(inm, M_IPMADDR);
+}
+
/*
* 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;
+in_addmulti(
+ struct in_addr *ap,
+ struct ifnet *ifp)
{
- register struct in_multi *inm;
+ struct in_multi *inm;
int error;
struct sockaddr_in sin;
struct ifmultiaddr *ifma;
- int s = splnet();
/*
* Call generic routine to add membership or increment
sin.sin_addr = *ap;
error = if_addmulti(ifp, (struct sockaddr *)&sin, &ifma);
if (error) {
- splx(s);
return 0;
}
* If ifma->ifma_protospec is null, then if_addmulti() created
* a new record. Otherwise, we are done.
*/
- if (ifma->ifma_protospec != 0)
+ if (ifma->ifma_protospec != 0) {
return ifma->ifma_protospec;
+ }
inm = (struct in_multi *) _MALLOC(sizeof(*inm), M_IPMADDR, M_WAITOK);
if (inm == NULL) {
- splx(s);
return (NULL);
}
inm->inm_addr = *ap;
inm->inm_ifp = ifp;
inm->inm_ifma = ifma;
- ifma->ifma_protospec = inm;
- LIST_INSERT_HEAD(&in_multihead, inm, inm_link);
+ lck_mtx_lock(rt_mtx);
+ if (ifma->ifma_protospec == NULL) {
+ ifma->ifma_protospec = inm;
+ ifma->ifma_free = in_free_inm;
+ LIST_INSERT_HEAD(&in_multihead, inm, inm_link);
+ }
+ lck_mtx_unlock(rt_mtx);
+
+ if (ifma->ifma_protospec != inm) {
+ _FREE(inm, M_IPMADDR);
+ return ifma->ifma_protospec;
+ }
/*
* Let IGMP know that we have joined a new IP multicast group.
*/
- igmp_joingroup(inm);
- splx(s);
+ error = igmp_joingroup(inm);
+ if (error) {
+ char addrbuf[16];
+
+ /*
+ * We can't free the inm because someone else may already be
+ * using it. Once we put it in to ifma->ifma_protospec, it
+ * must exist as long as the ifma does. Might be nice to flag
+ * the error so we can try igmp_joingroup the next time through.
+ */
+ log(LOG_ERR, "igmp_joingroup error %d joining multicast %s on %s%d\n",
+ error, inet_ntop(AF_INET, &sin.sin_addr, addrbuf, sizeof(addrbuf)),
+ ifp->if_name, ifp->if_unit);
+ }
+
return (inm);
}
* Delete a multicast address record.
*/
void
-in_delmulti(inm)
- register struct in_multi *inm;
+in_delmulti(
+ struct in_multi **inm)
{
- struct ifmultiaddr *ifma = inm->inm_ifma;
- int s = splnet();
-
- if (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);
+ struct in_multi *inm2;
+
+ lck_mtx_lock(rt_mtx);
+ LIST_FOREACH(inm2, &in_multihead, inm_link) {
+ if (inm2 == *inm)
+ break;
}
- /* XXX - should be separate API for when we have an ifma? */
- if_delmulti(ifma->ifma_ifp, ifma->ifma_addr);
- splx(s);
-
+ if (inm2 != *inm) {
+ lck_mtx_unlock(rt_mtx);
+ printf("in_delmulti - ignorning invalid inm (0x%x)\n", *inm);
+ return;
+ }
+ lck_mtx_unlock(rt_mtx);
+
+ /* We intentionally do this a bit differently than BSD */
+ if ((*inm)->inm_ifma) {
+ if_delmultiaddr((*inm)->inm_ifma, 0);
+ ifma_release((*inm)->inm_ifma);
+ }
+ *inm = NULL;
+}
+#if !NFSCLIENT
+int
+inet_aton(char * cp, struct in_addr * pin)
+{
+ u_char * b = (char *)pin;
+ int i;
+ char * p;
+
+ for (p = cp, i = 0; i < 4; i++) {
+ u_long l = strtoul(p, 0, 0);
+ if (l > 255)
+ return (FALSE);
+ b[i] = l;
+ p = strchr(p, '.');
+ if (i < 3 && p == NULL)
+ return (FALSE);
+ p++;
+ }
+ return (TRUE);
}
+#endif
projects / apple / xnu.git / blobdiff