/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2011 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <sys/sysctl.h>
#include <sys/kern_event.h>
#include <sys/syslog.h>
+#include <sys/mcache.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 <netinet/in.h>
#include <netinet/in_var.h>
#include <sys/file.h>
+#if PF
+#include <net/pfvar.h>
+#endif /* PF */
static int in_mask2len(struct in_addr *);
static void in_len2mask(struct in_addr *, int);
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,
- &subnetsarelocal, 0, "");
+#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))
-struct in_multihead in_multihead; /* XXX BSS initialization */
+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);
-extern lck_mtx_t *rt_mtx;
+static int subnetsarelocal = 0;
+SYSCTL_INT(_net_inet_ip, OID_AUTO, subnets_are_local, CTLFLAG_RW | CTLFLAG_LOCKED,
+ &subnetsarelocal, 0, "");
/* Track whether or not the SIOCARPIPLL ioctl has been called */
__private_extern__ u_int32_t ipv4_ll_arp_aware = 0;
+#define INIFA_TRACE_HIST_SIZE 32 /* size of trace history */
+
+/* For gdb */
+__private_extern__ unsigned int inifa_trace_hist_size = INIFA_TRACE_HIST_SIZE;
+
+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 */
+
+/*
+ * 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
* (one to which we have a connection). If subnetsarelocal
* Otherwise, it includes only the directly-connected (sub)nets.
*/
int
-in_localaddr(in)
- struct in_addr in;
+in_localaddr(struct in_addr in)
{
- u_long i = ntohl(in.s_addr);
+ u_int32_t i = ntohl(in.s_addr);
struct in_ifaddr *ia;
if (subnetsarelocal) {
- lck_mtx_lock(rt_mtx);
+ lck_rw_lock_shared(in_ifaddr_rwlock);
for (ia = in_ifaddrhead.tqh_first; ia;
- ia = ia->ia_link.tqe_next)
+ ia = ia->ia_link.tqe_next) {
+ IFA_LOCK(&ia->ia_ifa);
if ((i & ia->ia_netmask) == ia->ia_net) {
- lck_mtx_unlock(rt_mtx);
+ IFA_UNLOCK(&ia->ia_ifa);
+ lck_rw_done(in_ifaddr_rwlock);
return (1);
}
- lck_mtx_unlock(rt_mtx);
+ IFA_UNLOCK(&ia->ia_ifa);
+ }
+ lck_rw_done(in_ifaddr_rwlock);
} else {
- lck_mtx_lock(rt_mtx);
+ lck_rw_lock_shared(in_ifaddr_rwlock);
for (ia = in_ifaddrhead.tqh_first; ia;
- ia = ia->ia_link.tqe_next)
+ ia = ia->ia_link.tqe_next) {
+ IFA_LOCK(&ia->ia_ifa);
if ((i & ia->ia_subnetmask) == ia->ia_subnet) {
- lck_mtx_unlock(rt_mtx);
+ IFA_UNLOCK(&ia->ia_ifa);
+ lck_rw_done(in_ifaddr_rwlock);
return (1);
}
- lck_mtx_unlock(rt_mtx);
+ IFA_UNLOCK(&ia->ia_ifa);
+ }
+ lck_rw_done(in_ifaddr_rwlock);
}
return (0);
}
* may be forwarded.
*/
int
-in_canforward(in)
- struct in_addr in;
+in_canforward(struct in_addr in)
{
- u_long i = ntohl(in.s_addr);
- u_long net;
+ u_int32_t i = ntohl(in.s_addr);
+ u_int32_t net;
if (IN_EXPERIMENTAL(i) || IN_MULTICAST(i))
return (0);
* Trim a mask in a sockaddr
*/
static void
-in_socktrim(ap)
-struct sockaddr_in *ap;
+in_socktrim(struct sockaddr_in *ap)
{
char *cplim = (char *) &ap->sin_addr;
char *cp = (char *) (&ap->sin_addr + 1);
}
static int
-in_mask2len(mask)
- struct in_addr *mask;
+in_mask2len(struct in_addr *mask)
{
- int x, y;
+ size_t x, y;
u_char *p;
p = (u_char *)mask;
}
static void
-in_len2mask(mask, len)
- struct in_addr *mask;
- int len;
+in_len2mask(struct in_addr *mask, int len)
{
int i;
u_char *p;
static int in_interfaces; /* number of external internet interfaces */
+static int
+in_domifattach(struct ifnet *ifp)
+{
+ int error;
+
+ if ((error = proto_plumb(PF_INET, ifp)) && error != EEXIST)
+ log(LOG_ERR, "%s: proto_plumb returned %d if=%s%d\n",
+ __func__, error, ifp->if_name, ifp->if_unit);
+
+ return (error);
+}
+
/*
* Generic internet control operations (ioctl's).
* Ifp is 0 if not an interface-specific ioctl.
+ *
+ * Returns: 0 Success
+ * EINVAL
+ * EADDRNOTAVAIL
+ * EDESTADDRREQ
+ * EPERM
+ * ENOBUFS
+ * EBUSY
+ * EOPNOTSUPP
+ * proc_suser:EPERM
+ * suser:EPERM
+ * in_lifaddr_ioctl:???
+ * dlil_ioctl:???
+ * in_ifinit:???
+ * dlil_plumb_protocol:???
+ * dlil_unplumb_protocol:???
*/
/* ARGSUSED */
int
struct proc *p)
{
struct ifreq *ifr = (struct ifreq *)data;
- struct in_ifaddr *ia = 0, *iap;
+ struct in_ifaddr *ia = NULL, *iap;
struct ifaddr *ifa;
- struct in_ifaddr *oia;
struct in_aliasreq *ifra = (struct in_aliasreq *)data;
struct sockaddr_in oldaddr;
- int error, hostIsNew, maskIsNew;
- u_long i;
+ int error = 0;
+ int hostIsNew, maskIsNew;
struct kev_msg ev_msg;
struct kev_in_data in_event_data;
-
+ bzero(&in_event_data, sizeof(struct kev_in_data));
+ bzero(&ev_msg, sizeof(struct kev_msg));
switch (cmd) {
case SIOCALIFADDR:
case SIOCDLIFADDR:
- if (p && (error = proc_suser(p)) != 0)
+ if ((error = proc_suser(p)) != 0)
return error;
/*fall through*/
case SIOCGLIFADDR:
* the first one on the interface.
*/
if (ifp) {
- lck_mtx_lock(rt_mtx);
+ lck_rw_lock_shared(in_ifaddr_rwlock);
for (iap = in_ifaddrhead.tqh_first; iap;
iap = iap->ia_link.tqe_next)
if (iap->ia_ifp == ifp) {
+ IFA_LOCK(&iap->ia_ifa);
if (((struct sockaddr_in *)&ifr->ifr_addr)->sin_addr.s_addr ==
iap->ia_addr.sin_addr.s_addr) {
ia = iap;
+ IFA_UNLOCK(&iap->ia_ifa);
break;
} else if (ia == NULL) {
ia = iap;
- if (ifr->ifr_addr.sa_family != AF_INET)
+ if (ifr->ifr_addr.sa_family != AF_INET) {
+ IFA_UNLOCK(&iap->ia_ifa);
break;
+ }
}
+ IFA_UNLOCK(&iap->ia_ifa);
}
- lck_mtx_unlock(rt_mtx);
+ /* take a reference on ia before releasing lock */
+ if (ia != NULL) {
+ IFA_ADDREF(&ia->ia_ifa);
+ }
+ lck_rw_done(in_ifaddr_rwlock);
}
switch (cmd) {
case SIOCAUTOADDR:
case SIOCARPIPLL:
- if (p && (error = proc_suser(p)) != 0)
- return error;
+ if ((error = proc_suser(p)) != 0) {
+ goto done;
+ }
+ if (ifp == 0) {
+ error = EADDRNOTAVAIL;
+ goto done;
+ }
break;
case SIOCAIFADDR:
case SIOCDIFADDR:
- if (ifp == 0)
- return (EADDRNOTAVAIL);
+ if (ifp == 0) {
+ error = EADDRNOTAVAIL;
+ goto done;
+ }
if (ifra->ifra_addr.sin_family == AF_INET) {
- lck_mtx_lock(rt_mtx);
+ 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 ==
- ifra->ifra_addr.sin_addr.s_addr)
+ ifra->ifra_addr.sin_addr.s_addr) {
+ IFA_ADDREF_LOCKED(&ia->ia_ifa);
+ IFA_UNLOCK(&ia->ia_ifa);
break;
+ }
+ IFA_UNLOCK(&ia->ia_ifa);
}
- lck_mtx_unlock(rt_mtx);
+ lck_rw_done(in_ifaddr_rwlock);
+ if (oia != NULL)
+ IFA_REMREF(&oia->ia_ifa);
if ((ifp->if_flags & IFF_POINTOPOINT)
&& (cmd == SIOCAIFADDR)
&& (ifra->ifra_dstaddr.sin_addr.s_addr
== INADDR_ANY)) {
- return EDESTADDRREQ;
+ error = EDESTADDRREQ;
+ goto done;
}
}
- else if (cmd == SIOCAIFADDR)
- return (EINVAL);
- if (cmd == SIOCDIFADDR && ia == 0)
- return (EADDRNOTAVAIL);
+ else if (cmd == SIOCAIFADDR) {
+ error = EINVAL;
+ goto done;
+ }
+ if (cmd == SIOCDIFADDR && ia == 0) {
+ error = EADDRNOTAVAIL;
+ goto done;
+ }
/* FALLTHROUGH */
case SIOCSIFADDR:
case SIOCSIFNETMASK:
case SIOCSIFDSTADDR:
- if ((so->so_state & SS_PRIV) == 0)
- return (EPERM);
-
- 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.
- */
-
+ /* socket is NULL if called from in_purgeaddrs() */
+ if (so != NULL && (so->so_state & SS_PRIV) == 0) {
+ error = EPERM;
+ goto done;
+ }
+ /* in case it's NULL, make sure it came from the kernel */
+ if (so == NULL && p != kernproc) {
+ error = EPERM;
+ goto done;
+ }
+ if (ifp == 0) {
+ error = EADDRNOTAVAIL;
+ goto done;
+ }
+ if (ifra->ifra_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;
- 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++;
+ /* 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_mtx_lock(rt_mtx);
+ 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_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 */
- }
-
+ lck_rw_done(in_ifaddr_rwlock);
+ error = in_domifattach(ifp);
+ /* discard error,can be cold with unsupported interfaces */
+ if (error)
+ error = 0;
}
break;
case SIOCPROTOATTACH:
case SIOCPROTODETACH:
- if (p && (error = proc_suser(p)) != 0)
- return error;
- if (ifp == 0)
- return (EADDRNOTAVAIL);
+ if ((error = proc_suser(p)) != 0) {
+ goto done;
+ }
+ if (ifp == 0) {
+ error = EADDRNOTAVAIL;
+ goto done;
+ }
break;
-
+
case SIOCSIFBRDADDR:
-#ifdef __APPLE__
- if ((so->so_state & SS_PRIV) == 0)
- return (EPERM);
-#else
- if (p && (error = suser(p)) != 0)
- return error;
-#endif
+ if ((so->so_state & SS_PRIV) == 0) {
+ error = EPERM;
+ goto done;
+ }
/* FALLTHROUGH */
case SIOCGIFADDR:
case SIOCGIFNETMASK:
case SIOCGIFDSTADDR:
case SIOCGIFBRDADDR:
- if (ia == (struct in_ifaddr *)0)
- return (EADDRNOTAVAIL);
+ if (ia == (struct in_ifaddr *)0) {
+ error = EADDRNOTAVAIL;
+ goto done;
+ }
break;
}
switch (cmd) {
case SIOCAUTOADDR:
- if (ifp == 0)
- return (EADDRNOTAVAIL);
ifnet_lock_exclusive(ifp);
if (ifr->ifr_intval)
ifp->if_eflags |= IFEF_AUTOCONFIGURING;
break;
case SIOCARPIPLL:
- if (ifp == 0)
- return (EADDRNOTAVAIL);
ipv4_ll_arp_aware = 1;
ifnet_lock_exclusive(ifp);
if (ifr->ifr_data)
break;
case SIOCGIFADDR:
+ IFA_LOCK(&ia->ia_ifa);
*((struct sockaddr_in *)&ifr->ifr_addr) = ia->ia_addr;
+ IFA_UNLOCK(&ia->ia_ifa);
break;
case SIOCGIFBRDADDR:
- if ((ifp->if_flags & IFF_BROADCAST) == 0)
- return (EINVAL);
+ if ((ifp->if_flags & IFF_BROADCAST) == 0) {
+ error = EINVAL;
+ break;
+ }
+ IFA_LOCK(&ia->ia_ifa);
*((struct sockaddr_in *)&ifr->ifr_dstaddr) = ia->ia_broadaddr;
+ IFA_UNLOCK(&ia->ia_ifa);
break;
case SIOCGIFDSTADDR:
- if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
- return (EINVAL);
+ if ((ifp->if_flags & IFF_POINTOPOINT) == 0) {
+ error = EINVAL;
+ break;
+ }
+ IFA_LOCK(&ia->ia_ifa);
*((struct sockaddr_in *)&ifr->ifr_dstaddr) = ia->ia_dstaddr;
+ IFA_UNLOCK(&ia->ia_ifa);
break;
case SIOCGIFNETMASK:
+ IFA_LOCK(&ia->ia_ifa);
*((struct sockaddr_in *)&ifr->ifr_addr) = ia->ia_sockmask;
+ IFA_UNLOCK(&ia->ia_ifa);
break;
case SIOCSIFDSTADDR:
- if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
- return (EINVAL);
+ if ((ifp->if_flags & IFF_POINTOPOINT) == 0) {
+ error = EINVAL;
+ break;
+ }
+ IFA_LOCK(&ia->ia_ifa);
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;
-
+ if (ia->ia_dstaddr.sin_family == AF_INET)
+ ia->ia_dstaddr.sin_len = sizeof (struct sockaddr_in);
+ IFA_UNLOCK(&ia->ia_ifa);
+ error = ifnet_ioctl(ifp, PF_INET, SIOCSIFDSTADDR, ia);
+ IFA_LOCK(&ia->ia_ifa);
+ if (error == EOPNOTSUPP) {
+ error = 0;
+ }
if (error) {
- ia->ia_dstaddr = oldaddr;
- return error;
+ ia->ia_dstaddr = oldaddr;
+ IFA_UNLOCK(&ia->ia_ifa);
+ break;
}
+ IFA_LOCK_ASSERT_HELD(&ia->ia_ifa);
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_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);
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;
+ 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);
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 *)&oldaddr;
- rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
+ 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;
- rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP);
+ (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;
case SIOCSIFBRDADDR:
- if ((ifp->if_flags & IFF_BROADCAST) == 0)
- return (EINVAL);
+ if ((ifp->if_flags & IFF_BROADCAST) == 0) {
+ error = EINVAL;
+ break;
+ }
+ IFA_LOCK(&ia->ia_ifa);
ia->ia_broadaddr = *(struct sockaddr_in *)&ifr->ifr_broadaddr;
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_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);
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;
+ 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);
break;
case SIOCSIFADDR:
- return (in_ifinit(ifp, ia,
- (struct sockaddr_in *) &ifr->ifr_addr, 1));
+ /*
+ * 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,
+ (struct sockaddr_in *)&ifr->ifr_addr, 1);
+#if PF
+ if (!error)
+ (void) pf_ifaddr_hook(ifp, cmd);
+#endif /* PF */
+ break;
case SIOCPROTOATTACH:
- error = dlil_plumb_protocol(PF_INET, ifp);
- if (error)
- return(error);
- break;
-
+ error = in_domifattach(ifp);
+ break;
+
case SIOCPROTODETACH:
- // if an ip address is still present, refuse to detach
+ /*
+ * If an IPv4 address is still present, refuse to detach.
+ */
ifnet_lock_shared(ifp);
- 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);
- if (ifa != 0)
- return EBUSY;
+ if (ifa != NULL) {
+ error = EBUSY;
+ break;
+ }
- error = dlil_unplumb_protocol(PF_INET, ifp);
- if (error)
- return(error);
+ error = proto_unplumb(PF_INET, ifp);
break;
-
- case SIOCSIFNETMASK:
+ case SIOCSIFNETMASK: {
+ u_long i;
+
i = ifra->ifra_addr.sin_addr.s_addr;
+ 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_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);
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;
+ 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);
kev_post_msg(&ev_msg);
break;
-
+ }
case SIOCAIFADDR:
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;
hostIsNew = 0;
}
if (ifra->ifra_mask.sin_len) {
+ IFA_UNLOCK(&ia->ia_ifa);
in_ifscrub(ifp, ia, 0);
+ IFA_LOCK(&ia->ia_ifa);
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)) {
+ IFA_UNLOCK(&ia->ia_ifa);
in_ifscrub(ifp, ia, 0);
+ IFA_LOCK(&ia->ia_ifa);
ia->ia_dstaddr = ifra->ifra_dstaddr;
+ 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)) {
+ IFA_UNLOCK(&ia->ia_ifa);
error = in_ifinit(ifp, ia, &ifra->ifra_addr, 0);
+ } else {
+ IFA_UNLOCK(&ia->ia_ifa);
}
+#if PF
+ if (!error)
+ (void) pf_ifaddr_hook(ifp, cmd);
+#endif /* PF */
+ IFA_LOCK(&ia->ia_ifa);
if ((ifp->if_flags & IFF_BROADCAST) &&
(ifra->ifra_broadaddr.sin_family == AF_INET))
ia->ia_broadaddr = ifra->ifra_broadaddr;
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);
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;
+ 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);
+ } else {
+ IFA_UNLOCK(&ia->ia_ifa);
}
-
- return (error);
+ break;
case SIOCDIFADDR:
- error = dlil_ioctl(PF_INET, ifp, SIOCDIFADDR, (caddr_t)ia);
+ error = ifnet_ioctl(ifp, PF_INET, SIOCDIFADDR, ia);
if (error == EOPNOTSUPP)
error = 0;
- if (error)
- return error;
+ if (error != 0) {
+ break;
+ }
/* 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 *)ia->ia_ifa.ifa_dstaddr)->sin_addr;
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);
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;
+ 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;
- lck_mtx_lock(rt_mtx);
+ 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, 1);
- ifa = &ia->ia_ifa;
- lck_mtx_unlock(rt_mtx);
+ in_ifscrub(ifp, ia, 0);
ifnet_lock_exclusive(ifp);
+ IFA_LOCK(ifa);
+ /* if_detach_ifa() releases ifa_link reference */
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 = NULL;
-
- TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
- if (ifa->ifa_addr->sa_family == AF_INET)
+ /* Our reference to this address is dropped at the bottom */
+ IFA_UNLOCK(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) != 0 ||
+ ifp->if_allhostsinm != NULL ) {
+
+ TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
+ IFA_LOCK(ifa);
+ if (ifa->ifa_addr->sa_family == AF_INET) {
+ IFA_UNLOCK(ifa);
break;
-
- if (ifa == 0) {
- addr.s_addr = htonl(INADDR_ALLHOSTS_GROUP);
- IN_LOOKUP_MULTI(addr, ifp, inm);
+ }
+ IFA_UNLOCK(ifa);
}
ifnet_lock_done(ifp);
- if (inm)
- in_delmulti(&inm);
- } else
+
+ 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;
+
+ in_delmulti(inm);
+ /* release the reference for allhostsinm pointer */
+ INM_REMREF(inm);
+ }
+ lck_mtx_unlock(&ifp->if_addrconfig_lock);
+ } else {
ifnet_lock_done(ifp);
-#endif
+ }
/* 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) {
+ error = ifnet_ioctl(ifp, PF_INET, SIOCSIFADDR, ifa);
+ if (error == EOPNOTSUPP)
+ error = 0;
+
+ /* Release reference from ifa_ifpgetprimary() */
+ IFA_REMREF(ifa);
+ }
+#if PF
+ (void) pf_ifaddr_hook(ifp, cmd);
+#endif /* PF */
break;
#ifdef __APPLE__
/* 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;
* No multicast option buffer attached to the pcb;
* allocate one.
*/
- imo = (struct ip_moptions*)
- _MALLOC(sizeof(*imo), M_IPMOPTS, M_WAITOK);
+ imo = ip_allocmoptions(M_WAITOK);
if (imo == NULL) {
error2 = ENOBUFS;
break;
}
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) {
- 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;
- }
+
+ error2 = imo_clone(cloned_imo, imo);
}
}
break;
#endif /* __APPLE__ */
default:
- return EOPNOTSUPP;
+ error = EOPNOTSUPP;
}
- return (0);
+ done:
+ if (ia != NULL) {
+ IFA_REMREF(&ia->ia_ifa);
+ }
+ return (error);
}
/*
/* sanity checks */
if (!data || !ifp) {
panic("invalid argument to in_lifaddr_ioctl");
- /*NOTRECHED*/
+ /*NOTREACHED*/
}
switch (cmd) {
case SIOCDLIFADDR:
{
struct in_ifaddr *ia;
- struct in_addr mask, candidate, match;
+ struct in_addr mask, candidate;
+ struct in_addr match = { 0 };
struct sockaddr_in *sin;
int cmp;
ifnet_lock_shared(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
- if (ifa->ifa_addr->sa_family != AF_INET6)
+ IFA_LOCK(ifa);
+ if (ifa->ifa_addr->sa_family != AF_INET6) {
+ IFA_UNLOCK(ifa);
continue;
- if (!cmp)
+ }
+ if (!cmp) {
+ IFA_UNLOCK(ifa);
break;
+ }
candidate.s_addr = ((struct sockaddr_in *)&ifa->ifa_addr)->sin_addr.s_addr;
candidate.s_addr &= mask.s_addr;
+ IFA_UNLOCK(ifa);
if (candidate.s_addr == match.s_addr)
break;
}
+ if (ifa != NULL)
+ IFA_ADDREF(ifa);
ifnet_lock_done(ifp);
if (!ifa)
return EADDRNOTAVAIL;
ia = (struct in_ifaddr *)ifa;
if (cmd == SIOCGLIFADDR) {
+ IFA_LOCK(ifa);
/* fill in the if_laddrreq structure */
bcopy(&ia->ia_addr, &iflr->addr, ia->ia_addr.sin_len);
iflr->flags = 0; /*XXX*/
+ IFA_UNLOCK(ifa);
+ IFA_REMREF(ifa);
return 0;
} else {
struct in_aliasreq ifra;
bcopy(iflr->iflr_name, ifra.ifra_name,
sizeof(ifra.ifra_name));
+ IFA_LOCK(ifa);
bcopy(&ia->ia_addr, &ifra.ifra_addr,
ia->ia_addr.sin_len);
if ((ifp->if_flags & IFF_POINTOPOINT) != 0) {
}
bcopy(&ia->ia_sockmask, &ifra.ifra_dstaddr,
ia->ia_sockmask.sin_len);
-
+ IFA_UNLOCK(ifa);
+ IFA_REMREF(ifa);
return in_control(so, SIOCDIFADDR, (caddr_t)&ifra,
ifp, p);
}
* Delete any existing route for an interface.
*/
void
-in_ifscrub(
- struct ifnet *ifp,
- struct in_ifaddr *ia,
- int locked)
+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(rt_mtx);
+ lck_mtx_lock(rnh_lock);
if (ifp->if_flags & (IFF_LOOPBACK|IFF_POINTOPOINT))
rtinit_locked(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
else
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(rt_mtx);
+ 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);
}
/*
struct sockaddr_in *sin,
int scrub)
{
- u_long i = ntohl(sin->sin_addr.s_addr);
+ u_int32_t i = ntohl(sin->sin_addr.s_addr);
struct sockaddr_in oldaddr;
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;
+ ia->ia_addr.sin_len = sizeof (*sin);
+ 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) {
+ error = ifnet_ioctl(ifp, PF_INET, SIOCSIFADDR, ifa0);
+ if (error == EOPNOTSUPP)
+ error = 0;
+ }
+
+ /* Release reference from ifa_ifpgetprimary() */
+ IFA_REMREF(ifa0);
+
if (error) {
+ 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);
}
+ 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, 0);
+ 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_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 (*sin);
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);
- ifnet_lock_shared(ifp);
- IN_LOOKUP_MULTI(addr, ifp, inm);
- ifnet_lock_done(ifp);
- 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("Failed to add membership to all-hosts multicast address on interface %s%d\n", ifp->if_name, ifp->if_unit);
+ }
+ }
+ lck_mtx_unlock(&ifp->if_addrconfig_lock);
}
+
+ /* Release extra reference taken above */
+ IFA_REMREF(&ia->ia_ifa);
return (error);
}
* Return 1 if the address might be a local broadcast address.
*/
int
-in_broadcast(
- struct in_addr in,
- struct ifnet *ifp)
+in_broadcast(struct in_addr in, struct ifnet *ifp)
{
struct ifaddr *ifa;
- u_long t;
+ u_int32_t t;
- if (in.s_addr == INADDR_BROADCAST ||
- in.s_addr == INADDR_ANY)
- return 1;
+ if (in.s_addr == INADDR_BROADCAST || in.s_addr == INADDR_ANY)
+ return (1);
if ((ifp->if_flags & IFF_BROADCAST) == 0)
- return 0;
+ return (0);
t = ntohl(in.s_addr);
/*
* Look through the list of addresses for a match
#define ia ((struct in_ifaddr *)ifa)
ifnet_lock_shared(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
- if (ifa->ifa_addr == NULL) {
- ifnet_lock_done(ifp);
- return (0);
- }
+ 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) {
+ ia->ia_subnetmask != (u_int32_t)0xffffffff) {
+ IFA_UNLOCK(ifa);
ifnet_lock_done(ifp);
- return 1;
+ return (1);
}
+ IFA_UNLOCK(ifa);
}
ifnet_lock_done(ifp);
return (0);
#undef ia
}
-static void
-in_free_inm(
- void* ifma_protospec)
+void
+in_purgeaddrs(struct ifnet *ifp)
{
- struct in_multi *inm = ifma_protospec;
-
+ struct ifaddr **ifap;
+ int err, i;
+
/*
- * No remaining claims to this record; let IGMP know that
- * we are leaving the multicast group.
+ * 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.
*/
- igmp_leavegroup(inm);
- lck_mtx_lock(rt_mtx);
- LIST_REMOVE(inm, inm_link);
- lck_mtx_unlock(rt_mtx);
- FREE(inm, M_IPMADDR);
+ err = ifnet_get_address_list_family_internal(ifp, &ifap, AF_INET, 1,
+ M_WAITOK);
+ if (err == 0 && ifap != NULL) {
+ for (i = 0; ifap[i] != NULL; i++) {
+ struct ifaliasreq ifr;
+ struct ifaddr *ifa;
+
+ ifa = ifap[i];
+ bzero(&ifr, sizeof (ifr));
+ IFA_LOCK(ifa);
+ ifr.ifra_addr = *ifa->ifa_addr;
+ if (ifa->ifa_dstaddr != NULL)
+ ifr.ifra_broadaddr = *ifa->ifa_dstaddr;
+ 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 *)
+ ifa->ifa_addr)->sin_addr;
+ d = &((struct sockaddr_in *)
+ 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=%p ifa_addr=%s "
+ "ifa_dstaddr=%s (err=%d)\n", __func__, ifp,
+ 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=%p (err=%d)\n", __func__, ifp, err);
+ }
+}
+
+int inet_aton(char *cp, struct in_addr *pin);
+int
+inet_aton(char * cp, struct in_addr * pin)
+{
+ u_char * b = (unsigned char *)pin;
+ int i;
+ char * p;
+
+ for (p = cp, i = 0; i < 4; i++) {
+ u_int32_t 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);
+}
+
+int inet_ntoa2(struct in_addr * pin, char * cp, const int len);
+int inet_ntoa2(struct in_addr * pin, char * cp, const int len)
+{
+ int ret;
+
+ /* address is in network byte order */
+ ret = snprintf(cp, len, "%u.%u.%u.%u", pin->s_addr & 0xFF,
+ (pin->s_addr >> 8) & 0xFF, (pin->s_addr >> 16) & 0xFF,
+ (pin->s_addr >> 24) & 0xFF);
+
+ return ret < len ? TRUE : FALSE;
}
/*
- * Add an address to the list of IP multicast addresses for a given interface.
+ * Called as part of ip_init
*/
-struct in_multi *
-in_addmulti(
- struct in_addr *ap,
- struct ifnet *ifp)
+void
+in_ifaddr_init(void)
{
- struct in_multi *inm;
- int error;
- struct sockaddr_in sin;
- struct ifmultiaddr *ifma;
+ in_multi_init();
- /*
- * 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) {
- return 0;
- }
+ PE_parse_boot_argn("ifa_debug", &inifa_debug, sizeof (inifa_debug));
- /*
- * If ifma->ifma_protospec is null, then if_addmulti() created
- * a new record. Otherwise, we are done.
- */
- if (ifma->ifma_protospec != 0) {
- return ifma->ifma_protospec;
- }
+ inifa_size = (inifa_debug == 0) ? sizeof (struct in_ifaddr) :
+ sizeof (struct in_ifaddr_dbg);
- inm = (struct in_multi *) _MALLOC(sizeof(*inm), M_IPMADDR, M_WAITOK);
- if (inm == NULL) {
- return (NULL);
+ 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);
- bzero(inm, sizeof *inm);
- inm->inm_addr = *ap;
- inm->inm_ifp = ifp;
- inm->inm_ifma = ifma;
- 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;
+ 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);
+}
- /*
- * Let IGMP know that we have joined a new IP multicast group.
- */
- 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);
+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 */
}
-
- return (inm);
+ 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);
}
-/*
- * Delete a multicast address record.
- */
-void
-in_delmulti(
- struct in_multi **inm)
+static void
+in_ifaddr_attached(struct ifaddr *ifa)
{
- struct in_multi *inm2;
-
- lck_mtx_lock(rt_mtx);
- LIST_FOREACH(inm2, &in_multihead, inm_link) {
- if (inm2 == *inm)
- break;
+ 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 (inm2 != *inm) {
- lck_mtx_unlock(rt_mtx);
- printf("in_delmulti - ignorning invalid inm (0x%x)\n", *inm);
- return;
+ 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;
}
- 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);
+}
+
+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 */
}
- *inm = NULL;
+ 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);
}
-#if !NFSCLIENT
-int
-inet_aton(char * cp, struct in_addr * pin)
+static void
+in_ifaddr_trace(struct ifaddr *ifa, int refhold)
{
- u_char * b = (char *)pin;
- int i;
- char * p;
+ 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;
+ }
- 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);
+ idx = atomic_add_16_ov(cnt, 1) % INIFA_TRACE_HIST_SIZE;
+ ctrace_record(&tr[idx]);
}
-#endif
projects / apple / xnu.git / blobdiff