#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sockio.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/kern_event.h>
#include <sys/mcache.h>
#include <sys/protosw.h>
#include <kern/locks.h>
#include <kern/zalloc.h>
#include <libkern/OSAtomic.h>
#include <machine/machine_routines.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_var.h>
#include <net/route.h>
#include <net/if_dl.h>
#include <net/kpi_protocol.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.h>
#include <netinet/icmp6.h>
#include <netinet6/nd6.h>
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#include <netinet6/mld6_var.h>
#include <netinet6/ip6_mroute.h>
#include <netinet6/in6_ifattach.h>
#include <netinet6/scope6_var.h>
#include <netinet6/in6_var.h>
#include <netinet6/in6_pcb.h>
#include <net/net_osdep.h>
#if PF
#include <net/pfvar.h>
#endif
const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
const struct in6_addr in6addr_nodelocal_allnodes =
IN6ADDR_NODELOCAL_ALLNODES_INIT;
const struct in6_addr in6addr_linklocal_allnodes =
IN6ADDR_LINKLOCAL_ALLNODES_INIT;
const struct in6_addr in6addr_linklocal_allrouters =
IN6ADDR_LINKLOCAL_ALLROUTERS_INIT;
const struct in6_addr in6addr_linklocal_allv2routers =
IN6ADDR_LINKLOCAL_ALLV2ROUTERS_INIT;
const struct in6_addr in6mask0 = IN6MASK0;
const struct in6_addr in6mask7 = IN6MASK7;
const struct in6_addr in6mask16 = IN6MASK16;
const struct in6_addr in6mask32 = IN6MASK32;
const struct in6_addr in6mask64 = IN6MASK64;
const struct in6_addr in6mask96 = IN6MASK96;
const struct in6_addr in6mask128 = IN6MASK128;
const struct sockaddr_in6 sa6_any = {sizeof(sa6_any), AF_INET6,
0, 0, IN6ADDR_ANY_INIT, 0};
static int in6_lifaddr_ioctl(struct socket *, u_long, struct if_laddrreq *,
struct ifnet *, struct proc *);
static int in6_autoconf(struct ifnet *, int);
static int in6_setrouter(struct ifnet *, int);
static int in6_ifinit(struct ifnet *, struct in6_ifaddr *,
struct sockaddr_in6 *, int);
static void in6_unlink_ifa(struct in6_ifaddr *, struct ifnet *);
static struct in6_ifaddr *in6_ifaddr_alloc(int);
static void in6_ifaddr_attached(struct ifaddr *);
static void in6_ifaddr_detached(struct ifaddr *);
static void in6_ifaddr_free(struct ifaddr *);
static void in6_ifaddr_trace(struct ifaddr *, int);
static struct in6_aliasreq *in6_aliasreq_to_native(void *, int,
struct in6_aliasreq *);
static void in6_ifaddr_set_dadprogress(struct in6_ifaddr *);
extern lck_mtx_t *nd6_mutex;
extern int in6_init2done;
#define IN6IFA_TRACE_HIST_SIZE 32
__private_extern__ unsigned int in6ifa_trace_hist_size = IN6IFA_TRACE_HIST_SIZE;
struct in6_ifaddr_dbg {
struct in6_ifaddr in6ifa;
struct in6_ifaddr in6ifa_old;
u_int16_t in6ifa_refhold_cnt;
u_int16_t in6ifa_refrele_cnt;
ctrace_t in6ifa_alloc;
ctrace_t in6ifa_free;
ctrace_t in6ifa_refhold[IN6IFA_TRACE_HIST_SIZE];
ctrace_t in6ifa_refrele[IN6IFA_TRACE_HIST_SIZE];
TAILQ_ENTRY(in6_ifaddr_dbg) in6ifa_trash_link;
};
static TAILQ_HEAD(, in6_ifaddr_dbg) in6ifa_trash_head;
static decl_lck_mtx_data(, in6ifa_trash_lock);
#if DEBUG
static unsigned int in6ifa_debug = 1;
#else
static unsigned int in6ifa_debug;
#endif
static unsigned int in6ifa_size;
static struct zone *in6ifa_zone;
#define IN6IFA_ZONE_MAX 64
#define IN6IFA_ZONE_NAME "in6_ifaddr"
static void
in6_ifloop_request(int cmd, struct ifaddr *ifa)
{
struct sockaddr_in6 all1_sa;
struct rtentry *nrt = NULL;
int e;
bzero(&all1_sa, sizeof(all1_sa));
all1_sa.sin6_family = AF_INET6;
all1_sa.sin6_len = sizeof(struct sockaddr_in6);
all1_sa.sin6_addr = in6mask128;
lck_mtx_lock(rnh_lock);
e = rtrequest_locked(cmd, ifa->ifa_addr, ifa->ifa_addr,
(struct sockaddr *)&all1_sa,
RTF_UP|RTF_HOST|RTF_LLINFO, &nrt);
if (e != 0) {
log(LOG_ERR, "in6_ifloop_request: "
"%s operation failed for %s (errno=%d)\n",
cmd == RTM_ADD ? "ADD" : "DELETE",
ip6_sprintf(&((struct in6_ifaddr *)ifa)->ia_addr.sin6_addr),
e);
}
if (nrt != NULL)
RT_LOCK(nrt);
if (cmd == RTM_ADD && nrt && ifa != nrt->rt_ifa) {
rtsetifa(nrt, ifa);
}
if (nrt != NULL) {
rt_newaddrmsg(cmd, ifa, e, nrt);
if (cmd == RTM_DELETE) {
RT_UNLOCK(nrt);
rtfree_locked(nrt);
} else {
RT_REMREF_LOCKED(nrt);
RT_UNLOCK(nrt);
}
}
lck_mtx_unlock(rnh_lock);
}
static void
in6_ifaddloop(struct ifaddr *ifa)
{
struct rtentry *rt;
rt = rtalloc1(ifa->ifa_addr, 0, 0);
if (rt != NULL)
RT_LOCK(rt);
if (rt == NULL || (rt->rt_flags & RTF_HOST) == 0 ||
(rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) {
if (rt != NULL) {
RT_REMREF_LOCKED(rt);
RT_UNLOCK(rt);
}
in6_ifloop_request(RTM_ADD, ifa);
} else if (rt != NULL) {
RT_REMREF_LOCKED(rt);
RT_UNLOCK(rt);
}
}
static void
in6_ifremloop(struct ifaddr *ifa)
{
struct in6_ifaddr *ia;
struct rtentry *rt;
int ia_count = 0;
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
for (ia = in6_ifaddrs; ia; ia = ia->ia_next) {
IFA_LOCK(&ia->ia_ifa);
if (IN6_ARE_ADDR_EQUAL(IFA_IN6(ifa), &ia->ia_addr.sin6_addr)) {
ia_count++;
if (ia_count > 1) {
IFA_UNLOCK(&ia->ia_ifa);
break;
}
}
IFA_UNLOCK(&ia->ia_ifa);
}
lck_rw_done(&in6_ifaddr_rwlock);
if (ia_count == 1) {
rt = rtalloc1(ifa->ifa_addr, 0, 0);
if (rt != NULL) {
RT_LOCK(rt);
if ((rt->rt_flags & RTF_HOST) != 0 &&
(rt->rt_ifp->if_flags & IFF_LOOPBACK) != 0) {
RT_REMREF_LOCKED(rt);
RT_UNLOCK(rt);
in6_ifloop_request(RTM_DELETE, ifa);
} else {
RT_UNLOCK(rt);
}
}
}
}
int
in6_mask2len(mask, lim0)
struct in6_addr *mask;
u_char *lim0;
{
int x = 0, y;
u_char *lim = lim0, *p;
if (lim0 == NULL || lim0 - (u_char *)mask > sizeof(*mask))
lim = (u_char *)mask + sizeof(*mask);
for (p = (u_char *)mask; p < lim; x++, p++) {
if (*p != 0xff)
break;
}
y = 0;
if (p < lim) {
for (y = 0; y < 8; y++) {
if ((*p & (0x80 >> y)) == 0)
break;
}
}
if (p < lim) {
if (y != 0 && (*p & (0x00ff >> y)) != 0)
return (-1);
for (p = p + 1; p < lim; p++)
if (*p != 0)
return (-1);
}
return x * 8 + y;
}
void
in6_len2mask(mask, len)
struct in6_addr *mask;
int len;
{
int i;
bzero(mask, sizeof(*mask));
for (i = 0; i < len / 8; i++)
mask->s6_addr8[i] = 0xff;
if (len % 8)
mask->s6_addr8[i] = (0xff00 >> (len % 8)) & 0xff;
}
void
in6_aliasreq_64_to_32(struct in6_aliasreq_64 *src, struct in6_aliasreq_32 *dst)
{
bzero(dst, sizeof (*dst));
bcopy(src->ifra_name, dst->ifra_name, sizeof (dst->ifra_name));
dst->ifra_addr = src->ifra_addr;
dst->ifra_dstaddr = src->ifra_dstaddr;
dst->ifra_prefixmask = src->ifra_prefixmask;
dst->ifra_flags = src->ifra_flags;
dst->ifra_lifetime.ia6t_expire = src->ifra_lifetime.ia6t_expire;
dst->ifra_lifetime.ia6t_preferred = src->ifra_lifetime.ia6t_preferred;
dst->ifra_lifetime.ia6t_vltime = src->ifra_lifetime.ia6t_vltime;
dst->ifra_lifetime.ia6t_pltime = src->ifra_lifetime.ia6t_pltime;
}
void
in6_aliasreq_32_to_64(struct in6_aliasreq_32 *src, struct in6_aliasreq_64 *dst)
{
bzero(dst, sizeof (*dst));
bcopy(src->ifra_name, dst->ifra_name, sizeof (dst->ifra_name));
dst->ifra_addr = src->ifra_addr;
dst->ifra_dstaddr = src->ifra_dstaddr;
dst->ifra_prefixmask = src->ifra_prefixmask;
dst->ifra_flags = src->ifra_flags;
dst->ifra_lifetime.ia6t_expire = src->ifra_lifetime.ia6t_expire;
dst->ifra_lifetime.ia6t_preferred = src->ifra_lifetime.ia6t_preferred;
dst->ifra_lifetime.ia6t_vltime = src->ifra_lifetime.ia6t_vltime;
dst->ifra_lifetime.ia6t_pltime = src->ifra_lifetime.ia6t_pltime;
}
static struct in6_aliasreq *
in6_aliasreq_to_native(void *data, int data_is_64, struct in6_aliasreq *dst)
{
#if defined(__LP64__)
if (data_is_64)
bcopy(data, dst, sizeof (*dst));
else
in6_aliasreq_32_to_64((struct in6_aliasreq_32 *)data,
(struct in6_aliasreq_64 *)dst);
#else
if (data_is_64)
in6_aliasreq_64_to_32((struct in6_aliasreq_64 *)data,
(struct in6_aliasreq_32 *)dst);
else
bcopy(data, dst, sizeof (*dst));
#endif
return (dst);
}
#define ifa2ia6(ifa) ((struct in6_ifaddr *)(void *)(ifa))
int
in6_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp,
struct proc *p)
{
struct in6_aliasreq sifra, *ifra = NULL;
struct in6_ifaddr *ia = NULL;
struct sockaddr_in6 sin6, *sa6 = NULL;
int index, privileged, error = 0;
u_int32_t ifru_scope_id[16];
struct timeval timenow;
int p64 = proc_is64bit(p);
getmicrotime(&timenow);
privileged = (proc_suser(p) == 0);
switch (cmd) {
#if MROUTING
case SIOCGETSGCNT_IN6:
case SIOCGETMIFCNT_IN6_32:
case SIOCGETMIFCNT_IN6_64:
return (mrt6_ioctl(cmd, data));
#endif
case SIOCAADDRCTL_POLICY:
case SIOCDADDRCTL_POLICY:
if (!privileged)
return (EPERM);
return (in6_src_ioctl(cmd, data));
case SIOCDRADD_IN6_32:
case SIOCDRADD_IN6_64:
case SIOCDRDEL_IN6_32:
case SIOCDRDEL_IN6_64:
if (!privileged)
return (EPERM);
return (defrtrlist_ioctl(cmd, data));
}
if (ifp == NULL)
return (EOPNOTSUPP);
switch (cmd) {
case SIOCAUTOCONF_START:
case SIOCAUTOCONF_STOP:
case SIOCLL_START_32:
case SIOCLL_START_64:
case SIOCLL_STOP:
case SIOCSETROUTERMODE_IN6:
case SIOCPROTOATTACH_IN6_32:
case SIOCPROTOATTACH_IN6_64:
case SIOCPROTODETACH_IN6:
if (!privileged)
return (EPERM);
break;
case SIOCSNDFLUSH_IN6:
case SIOCSPFXFLUSH_IN6:
case SIOCSRTRFLUSH_IN6:
case SIOCSDEFIFACE_IN6_32:
case SIOCSDEFIFACE_IN6_64:
case SIOCSIFINFO_FLAGS:
if (!privileged)
return (EPERM);
case OSIOCGIFINFO_IN6:
case SIOCGIFINFO_IN6:
case SIOCGDRLST_IN6_32:
case SIOCGDRLST_IN6_64:
case SIOCGPRLST_IN6_32:
case SIOCGPRLST_IN6_64:
case SIOCGNBRINFO_IN6_32:
case SIOCGNBRINFO_IN6_64:
case SIOCGDEFIFACE_IN6_32:
case SIOCGDEFIFACE_IN6_64:
return (nd6_ioctl(cmd, data, ifp));
case SIOCSIFPREFIX_IN6:
case SIOCDIFPREFIX_IN6:
case SIOCAIFPREFIX_IN6:
case SIOCCIFPREFIX_IN6:
case SIOCSGIFPREFIX_IN6:
case SIOCGIFPREFIX_IN6:
log(LOG_NOTICE,
"prefix ioctls are now invalidated. "
"please use ifconfig.\n");
return (EOPNOTSUPP);
case SIOCSSCOPE6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
if (!privileged)
return (EPERM);
bcopy(ifr->ifr_ifru.ifru_scope_id, ifru_scope_id,
sizeof (ifru_scope_id));
return (scope6_set(ifp, ifru_scope_id));
}
case SIOCGSCOPE6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
bcopy(ifr->ifr_ifru.ifru_scope_id, ifru_scope_id,
sizeof (ifru_scope_id));
return (scope6_get(ifp, ifru_scope_id));
}
case SIOCGSCOPE6DEF: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
bcopy(ifr->ifr_ifru.ifru_scope_id, ifru_scope_id,
sizeof (ifru_scope_id));
return (scope6_get_default(ifru_scope_id));
}
case SIOCALIFADDR:
case SIOCDLIFADDR:
if (!privileged)
return(EPERM);
case SIOCGLIFADDR: {
struct if_laddrreq iflr;
bcopy(data, &iflr, sizeof (iflr));
error = in6_lifaddr_ioctl(so, cmd, &iflr, ifp, p);
bcopy(&iflr, data, sizeof (iflr));
return (error);
}
}
switch (cmd) {
case SIOCLL_START_32:
case SIOCAIFADDR_IN6_32: {
ifra = in6_aliasreq_to_native(data, 0, &sifra);
bcopy(&ifra->ifra_addr, &sin6, sizeof (sin6));
sa6 = &sin6;
break;
}
case SIOCLL_START_64:
case SIOCAIFADDR_IN6_64: {
ifra = in6_aliasreq_to_native(data, 1, &sifra);
bcopy(&ifra->ifra_addr, &sin6, sizeof (sin6));
sa6 = &sin6;
break;
}
case SIOCSIFADDR_IN6:
case SIOCGIFADDR_IN6:
case SIOCSIFDSTADDR_IN6:
case SIOCSIFNETMASK_IN6:
case SIOCGIFDSTADDR_IN6:
case SIOCGIFNETMASK_IN6:
case SIOCDIFADDR_IN6:
case SIOCGIFPSRCADDR_IN6:
case SIOCGIFPDSTADDR_IN6:
case SIOCGIFAFLAG_IN6:
case SIOCSNDFLUSH_IN6:
case SIOCSPFXFLUSH_IN6:
case SIOCSRTRFLUSH_IN6:
case SIOCGIFALIFETIME_IN6:
case SIOCSIFALIFETIME_IN6:
case SIOCGIFSTAT_IN6:
case SIOCGIFSTAT_ICMP6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
bcopy(&ifr->ifr_addr, &sin6, sizeof (sin6));
sa6 = &sin6;
break;
}
default:
break;
}
switch (cmd) {
case SIOCAUTOCONF_START:
return (in6_autoconf(ifp, TRUE));
case SIOCAUTOCONF_STOP:
return (in6_autoconf(ifp, FALSE));
case SIOCLL_START_32:
case SIOCLL_START_64:
VERIFY(ifra != NULL);
if ((ifp->if_eflags & IFEF_NOAUTOIPV6LL) != 0 &&
ifra->ifra_addr.sin6_family == AF_INET6 &&
ifra->ifra_dstaddr.sin6_family == AF_INET6) {
error = in6_if_up(ifp, ifra);
} else {
error = in6_if_up(ifp, NULL);
}
return (error);
case SIOCLL_STOP:
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
ia = in6_ifaddrs;
while (ia != NULL) {
if (ia->ia_ifa.ifa_ifp != ifp) {
ia = ia->ia_next;
continue;
}
IFA_LOCK(&ia->ia_ifa);
if (IN6_IS_ADDR_LINKLOCAL(&ia->ia_addr.sin6_addr)) {
IFA_ADDREF_LOCKED(&ia->ia_ifa);
IFA_UNLOCK(&ia->ia_ifa);
lck_rw_done(&in6_ifaddr_rwlock);
in6_purgeaddr(&ia->ia_ifa);
IFA_REMREF(&ia->ia_ifa);
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
ia = in6_ifaddrs;
continue;
}
IFA_UNLOCK(&ia->ia_ifa);
ia = ia->ia_next;
}
lck_rw_done(&in6_ifaddr_rwlock);
return (0);
case SIOCSETROUTERMODE_IN6: {
int intval;
VERIFY(ifp != NULL);
bcopy(&((struct in6_ifreq *)(void *)data)->ifr_intval,
&intval, sizeof (intval));
return (in6_setrouter(ifp, intval));
}
case SIOCPROTOATTACH_IN6_32:
case SIOCPROTOATTACH_IN6_64:
return (in6_domifattach(ifp));
case SIOCPROTODETACH_IN6:
in6_purgeif(ifp);
if ((error = proto_unplumb(PF_INET6, ifp)))
printf("SIOCPROTODETACH_IN6: %s error=%d\n",
if_name(ifp), error);
return (error);
}
if (sa6 != NULL && sa6->sin6_family == AF_INET6) {
if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr)) {
if (sa6->sin6_addr.s6_addr16[1] == 0) {
sa6->sin6_addr.s6_addr16[1] =
htons(ifp->if_index);
} else if (sa6->sin6_addr.s6_addr16[1] !=
htons(ifp->if_index)) {
return (EINVAL);
}
if (sa6->sin6_scope_id) {
if (sa6->sin6_scope_id !=
(u_int32_t)ifp->if_index)
return (EINVAL);
sa6->sin6_scope_id = 0;
}
}
ia = in6ifa_ifpwithaddr(ifp, &sa6->sin6_addr);
} else {
ia = NULL;
}
switch (cmd) {
case SIOCSIFADDR_IN6:
case SIOCSIFDSTADDR_IN6:
case SIOCSIFNETMASK_IN6:
error = EINVAL;
goto ioctl_cleanup;
case SIOCDIFADDR_IN6:
if (ia == NULL) {
error = EADDRNOTAVAIL;
goto ioctl_cleanup;
}
case SIOCAIFADDR_IN6_32:
case SIOCAIFADDR_IN6_64:
VERIFY(sa6 != NULL);
if (sa6->sin6_family != AF_INET6 ||
sa6->sin6_len != sizeof(struct sockaddr_in6)) {
error = EAFNOSUPPORT;
goto ioctl_cleanup;
}
if (!privileged) {
error = EPERM;
goto ioctl_cleanup;
}
break;
case SIOCGIFADDR_IN6:
case SIOCGIFAFLAG_IN6:
case SIOCGIFNETMASK_IN6:
case SIOCGIFDSTADDR_IN6:
case SIOCGIFALIFETIME_IN6:
if (ia == NULL) {
error = EADDRNOTAVAIL;
goto ioctl_cleanup;
}
break;
case SIOCSIFALIFETIME_IN6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
if (!privileged) {
error = EPERM;
goto ioctl_cleanup;
}
if (ia == NULL) {
error = EADDRNOTAVAIL;
goto ioctl_cleanup;
}
if (p64) {
struct in6_addrlifetime_64 lt;
bcopy(&ifr->ifr_ifru.ifru_lifetime, <, sizeof (lt));
if (((ia->ia6_flags & IN6_IFF_TEMPORARY) != 0
|| lt.ia6t_vltime != ND6_INFINITE_LIFETIME)
&& lt.ia6t_vltime + timenow.tv_sec <
timenow.tv_sec) {
error = EINVAL;
goto ioctl_cleanup;
}
if (((ia->ia6_flags & IN6_IFF_TEMPORARY) != 0
|| lt.ia6t_pltime != ND6_INFINITE_LIFETIME)
&& lt.ia6t_pltime + timenow.tv_sec <
timenow.tv_sec) {
error = EINVAL;
goto ioctl_cleanup;
}
} else {
struct in6_addrlifetime_32 lt;
bcopy(&ifr->ifr_ifru.ifru_lifetime, <, sizeof (lt));
if (((ia->ia6_flags & IN6_IFF_TEMPORARY) != 0
|| lt.ia6t_vltime != ND6_INFINITE_LIFETIME)
&& lt.ia6t_vltime + timenow.tv_sec <
timenow.tv_sec) {
error = EINVAL;
goto ioctl_cleanup;
}
if (((ia->ia6_flags & IN6_IFF_TEMPORARY) != 0
|| lt.ia6t_pltime != ND6_INFINITE_LIFETIME)
&& lt.ia6t_pltime + timenow.tv_sec <
timenow.tv_sec) {
error = EINVAL;
goto ioctl_cleanup;
}
}
break;
}
}
switch (cmd) {
case SIOCGIFADDR_IN6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
struct sockaddr_in6 addr;
IFA_LOCK(&ia->ia_ifa);
bcopy(&ia->ia_addr, &addr, sizeof (addr));
IFA_UNLOCK(&ia->ia_ifa);
if ((error = sa6_recoverscope(&addr, TRUE)) != 0) {
IFA_REMREF(&ia->ia_ifa);
return (error);
}
bcopy(&addr, &ifr->ifr_addr, sizeof (addr));
break;
}
case SIOCGIFDSTADDR_IN6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
struct sockaddr_in6 dstaddr;
if ((ifp->if_flags & IFF_POINTOPOINT) == 0) {
error = EINVAL;
goto ioctl_cleanup;
}
IFA_LOCK(&ia->ia_ifa);
bcopy(&ia->ia_dstaddr, &dstaddr, sizeof (dstaddr));
IFA_UNLOCK(&ia->ia_ifa);
if ((error = sa6_recoverscope(&dstaddr, TRUE)) != 0) {
IFA_REMREF(&ia->ia_ifa);
return (error);
}
bcopy(&dstaddr, &ifr->ifr_dstaddr, sizeof (dstaddr));
break;
}
case SIOCGIFNETMASK_IN6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
IFA_LOCK(&ia->ia_ifa);
bcopy(&ia->ia_prefixmask, &ifr->ifr_addr,
sizeof (struct sockaddr_in6));
IFA_UNLOCK(&ia->ia_ifa);
break;
}
case SIOCGIFAFLAG_IN6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
IFA_LOCK(&ia->ia_ifa);
bcopy(&ia->ia6_flags, &ifr->ifr_ifru.ifru_flags6,
sizeof (ifr->ifr_ifru.ifru_flags6));
IFA_UNLOCK(&ia->ia_ifa);
break;
}
case SIOCGIFSTAT_IN6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
if (ifp == NULL) {
error = EINVAL;
goto ioctl_cleanup;
}
index = ifp->if_index;
lck_rw_lock_shared(&in6_ifs_rwlock);
if (in6_ifstat == NULL || index >= in6_ifstatmax ||
in6_ifstat[index] == NULL) {
bzero(&ifr->ifr_ifru.ifru_stat,
sizeof (ifr->ifr_ifru.ifru_stat));
} else {
bcopy(in6_ifstat[index], &ifr->ifr_ifru.ifru_stat,
sizeof (ifr->ifr_ifru.ifru_stat));
}
lck_rw_done(&in6_ifs_rwlock);
break;
}
case SIOCGIFSTAT_ICMP6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
if (ifp == NULL) {
error = EINVAL;
goto ioctl_cleanup;
}
index = ifp->if_index;
lck_rw_lock_shared(&icmp6_ifs_rwlock);
if (icmp6_ifstat == NULL || index >= icmp6_ifstatmax ||
icmp6_ifstat[index] == NULL) {
bzero(&ifr->ifr_ifru.ifru_stat,
sizeof (ifr->ifr_ifru.ifru_icmp6stat));
} else {
bcopy(icmp6_ifstat[index],
&ifr->ifr_ifru.ifru_icmp6stat,
sizeof (ifr->ifr_ifru.ifru_icmp6stat));
}
lck_rw_done(&icmp6_ifs_rwlock);
break;
}
case SIOCGIFALIFETIME_IN6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
IFA_LOCK(&ia->ia_ifa);
if (p64) {
struct in6_addrlifetime_64 lt;
bzero(<, sizeof (lt));
lt.ia6t_expire = ia->ia6_lifetime.ia6t_expire;
lt.ia6t_preferred = ia->ia6_lifetime.ia6t_preferred;
lt.ia6t_vltime = ia->ia6_lifetime.ia6t_vltime;
lt.ia6t_pltime = ia->ia6_lifetime.ia6t_pltime;
bcopy(<, &ifr->ifr_ifru.ifru_lifetime, sizeof (lt));
} else {
struct in6_addrlifetime_32 lt;
bzero(<, sizeof (lt));
lt.ia6t_expire = (uint32_t)ia->ia6_lifetime.ia6t_expire;
lt.ia6t_preferred =
(uint32_t)ia->ia6_lifetime.ia6t_preferred;
lt.ia6t_vltime = (uint32_t)ia->ia6_lifetime.ia6t_vltime;
lt.ia6t_pltime = (uint32_t)ia->ia6_lifetime.ia6t_pltime;
bcopy(<, &ifr->ifr_ifru.ifru_lifetime, sizeof (lt));
}
IFA_UNLOCK(&ia->ia_ifa);
break;
}
case SIOCSIFALIFETIME_IN6: {
struct in6_ifreq *ifr = (struct in6_ifreq *)(void *)data;
IFA_LOCK(&ia->ia_ifa);
if (p64) {
struct in6_addrlifetime_64 lt;
bcopy(&ifr->ifr_ifru.ifru_lifetime, <, sizeof (lt));
ia->ia6_lifetime.ia6t_expire = lt.ia6t_expire;
ia->ia6_lifetime.ia6t_preferred = lt.ia6t_preferred;
ia->ia6_lifetime.ia6t_vltime = lt.ia6t_vltime;
ia->ia6_lifetime.ia6t_pltime = lt.ia6t_pltime;
} else {
struct in6_addrlifetime_32 lt;
bcopy(&ifr->ifr_ifru.ifru_lifetime, <, sizeof (lt));
ia->ia6_lifetime.ia6t_expire =
(uint32_t)lt.ia6t_expire;
ia->ia6_lifetime.ia6t_preferred =
(uint32_t)lt.ia6t_preferred;
ia->ia6_lifetime.ia6t_vltime = lt.ia6t_vltime;
ia->ia6_lifetime.ia6t_pltime = lt.ia6t_pltime;
}
if (ia->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME ||
(ia->ia6_flags & IN6_IFF_TEMPORARY) != 0) {
ia->ia6_lifetime.ia6t_expire =
timenow.tv_sec + ia->ia6_lifetime.ia6t_vltime;
} else
ia->ia6_lifetime.ia6t_expire = 0;
if (ia->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME ||
(ia->ia6_flags & IN6_IFF_TEMPORARY) != 0) {
ia->ia6_lifetime.ia6t_preferred =
timenow.tv_sec + ia->ia6_lifetime.ia6t_pltime;
} else
ia->ia6_lifetime.ia6t_preferred = 0;
IFA_UNLOCK(&ia->ia_ifa);
break;
}
case SIOCAIFADDR_IN6_32:
case SIOCAIFADDR_IN6_64: {
int i;
struct nd_prefix pr0, *pr;
VERIFY(ifra != NULL);
error = in6_domifattach(ifp);
if (error) {
if (error == EEXIST)
error = 0;
else
goto ioctl_cleanup;
} else {
if ((error = in6_if_up(ifp, NULL)) != 0)
goto ioctl_cleanup;
}
if ((error = in6_update_ifa(ifp, ifra, ia, 0, M_WAITOK)) != 0)
goto ioctl_cleanup;
bzero(&pr0, sizeof(pr0));
lck_mtx_init(&pr0.ndpr_lock, ifa_mtx_grp, ifa_mtx_attr);
pr0.ndpr_ifp = ifp;
pr0.ndpr_plen = in6_mask2len(&ifra->ifra_prefixmask.sin6_addr,
NULL);
if (pr0.ndpr_plen == 128)
break;
pr0.ndpr_prefix = ifra->ifra_addr;
pr0.ndpr_mask = ifra->ifra_prefixmask.sin6_addr;
for (i = 0; i < 4; i++) {
pr0.ndpr_prefix.sin6_addr.s6_addr32[i] &=
ifra->ifra_prefixmask.sin6_addr.s6_addr32[i];
}
pr0.ndpr_raf_onlink = 1;
pr0.ndpr_raf_auto =
((ifra->ifra_flags & IN6_IFF_AUTOCONF) != 0);
pr0.ndpr_vltime = ifra->ifra_lifetime.ia6t_vltime;
pr0.ndpr_pltime = ifra->ifra_lifetime.ia6t_pltime;
pr0.ndpr_stateflags |= NDPRF_STATIC;
if ((pr = nd6_prefix_lookup(&pr0)) == NULL) {
if ((error = nd6_prelist_add(&pr0, NULL, &pr,
FALSE)) != 0)
goto ioctl_cleanup;
if (pr == NULL) {
log(LOG_ERR, "nd6_prelist_add succedded but "
"no prefix\n");
error = EINVAL;
goto ioctl_cleanup;
}
}
if (ia != NULL)
IFA_REMREF(&ia->ia_ifa);
if ((ia = in6ifa_ifpwithaddr(ifp,
&ifra->ifra_addr.sin6_addr)) == NULL) {
log(LOG_ERR, "in6_control: addition succeeded, but"
" no ifaddr\n");
} else {
IFA_LOCK(&ia->ia_ifa);
if ((ia->ia6_flags & IN6_IFF_AUTOCONF) != 0 &&
ia->ia6_ndpr == NULL) {
NDPR_LOCK(pr);
pr->ndpr_addrcnt++;
VERIFY(pr->ndpr_addrcnt != 0);
ia->ia6_ndpr = pr;
NDPR_ADDREF_LOCKED(pr);
if (ip6_use_tempaddr &&
pr->ndpr_addrcnt == 1) {
int e;
NDPR_UNLOCK(pr);
IFA_UNLOCK(&ia->ia_ifa);
if ((e = in6_tmpifadd(ia, 1,
M_WAITOK)) != 0) {
log(LOG_NOTICE, "in6_control: "
"failed to create a "
"temporary address, "
"errno=%d\n",
e);
}
} else {
NDPR_UNLOCK(pr);
IFA_UNLOCK(&ia->ia_ifa);
}
} else {
IFA_UNLOCK(&ia->ia_ifa);
}
lck_mtx_lock(nd6_mutex);
pfxlist_onlink_check();
lck_mtx_unlock(nd6_mutex);
}
NDPR_REMREF(pr);
#if PF
pf_ifaddr_hook(ifp, cmd);
#endif
break;
}
case SIOCDIFADDR_IN6: {
int i = 0;
struct nd_prefix pr0, *pr;
IFA_LOCK(&ia->ia_ifa);
bzero(&pr0, sizeof(pr0));
pr0.ndpr_ifp = ifp;
pr0.ndpr_plen = in6_mask2len(&ia->ia_prefixmask.sin6_addr,
NULL);
if (pr0.ndpr_plen == 128) {
IFA_UNLOCK(&ia->ia_ifa);
goto purgeaddr;
}
pr0.ndpr_prefix = ia->ia_addr;
pr0.ndpr_mask = ia->ia_prefixmask.sin6_addr;
for (i = 0; i < 4; i++) {
pr0.ndpr_prefix.sin6_addr.s6_addr32[i] &=
ia->ia_prefixmask.sin6_addr.s6_addr32[i];
}
IFA_UNLOCK(&ia->ia_ifa);
if ((pr = nd6_prefix_lookup(&pr0)) != NULL) {
IFA_LOCK(&ia->ia_ifa);
NDPR_LOCK(pr);
if (((ia->ia6_flags & IN6_IFF_AUTOCONF) != 0 &&
pr->ndpr_addrcnt == 1) ||
((ia->ia6_flags & IN6_IFF_AUTOCONF) == 0 &&
pr->ndpr_addrcnt == 0)) {
pr->ndpr_expire = 1;
}
NDPR_UNLOCK(pr);
IFA_UNLOCK(&ia->ia_ifa);
NDPR_REMREF(pr);
}
purgeaddr:
in6_purgeaddr(&ia->ia_ifa);
#if PF
pf_ifaddr_hook(ifp, cmd);
#endif
break;
}
default:
error = ifnet_ioctl(ifp, PF_INET6, cmd, data);
goto ioctl_cleanup;
}
ioctl_cleanup:
if (ia != NULL)
IFA_REMREF(&ia->ia_ifa);
return (error);
}
static int
in6_autoconf(struct ifnet *ifp, int enable)
{
int error = 0;
if (ifp->if_flags & IFF_LOOPBACK)
return (EINVAL);
if (enable) {
ifnet_lock_exclusive(ifp);
if (ifp->if_eflags & IFEF_IPV6_ROUTER) {
ifp->if_eflags &= ~IFEF_ACCEPT_RTADV;
error = EBUSY;
} else {
ifp->if_eflags |= IFEF_ACCEPT_RTADV;
}
ifnet_lock_done(ifp);
} else {
struct in6_ifaddr *ia = NULL;
ifnet_lock_exclusive(ifp);
ifp->if_eflags &= ~IFEF_ACCEPT_RTADV;
ifnet_lock_done(ifp);
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
ia = in6_ifaddrs;
while (ia != NULL) {
if (ia->ia_ifa.ifa_ifp != ifp) {
ia = ia->ia_next;
continue;
}
IFA_LOCK(&ia->ia_ifa);
if (ia->ia6_flags & IN6_IFF_AUTOCONF) {
IFA_ADDREF_LOCKED(&ia->ia_ifa);
IFA_UNLOCK(&ia->ia_ifa);
lck_rw_done(&in6_ifaddr_rwlock);
in6_purgeaddr(&ia->ia_ifa);
IFA_REMREF(&ia->ia_ifa);
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
ia = in6_ifaddrs;
continue;
}
IFA_UNLOCK(&ia->ia_ifa);
ia = ia->ia_next;
}
lck_rw_done(&in6_ifaddr_rwlock);
}
return (error);
}
static int
in6_setrouter(struct ifnet *ifp, int enable)
{
if (ifp->if_flags & IFF_LOOPBACK)
return (ENODEV);
if (enable) {
struct nd_ifinfo *ndi;
lck_rw_lock_shared(nd_if_rwlock);
ndi = ND_IFINFO(ifp);
if (ndi != NULL && ndi->initialized) {
lck_mtx_lock(&ndi->lock);
if (ndi->flags & ND6_IFF_PROXY_PREFIXES) {
ndi->flags &= ~ND6_IFF_PROXY_PREFIXES;
lck_mtx_unlock(&ndi->lock);
lck_rw_done(nd_if_rwlock);
(void) nd6_if_prproxy(ifp, FALSE);
} else {
lck_mtx_unlock(&ndi->lock);
lck_rw_done(nd_if_rwlock);
}
} else {
lck_rw_done(nd_if_rwlock);
}
}
ifnet_lock_exclusive(ifp);
if (enable) {
ifp->if_eflags |= IFEF_IPV6_ROUTER;
} else {
ifp->if_eflags &= ~IFEF_IPV6_ROUTER;
}
ifnet_lock_done(ifp);
lck_mtx_lock(nd6_mutex);
defrouter_select(ifp);
lck_mtx_unlock(nd6_mutex);
if_allmulti(ifp, enable);
return (in6_autoconf(ifp, FALSE));
}
int
in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra,
struct in6_ifaddr *ia, int flags, int how)
{
int error = 0, hostIsNew = 0, plen = -1;
struct in6_ifaddr *oia;
struct sockaddr_in6 dst6;
struct in6_addrlifetime *lt;
struct in6_multi *in6m_sol = NULL;
struct in6_multi_mship *imm;
struct timeval timenow;
struct rtentry *rt;
struct ifaddr *ifa = NULL;
int delay;
if (ifp == NULL || ifra == NULL)
return(EINVAL);
if ((ifp->if_flags & IFF_POINTOPOINT) != 0 &&
ifra->ifra_dstaddr.sin6_family != AF_INET6 &&
ifra->ifra_dstaddr.sin6_family != AF_UNSPEC)
return(EAFNOSUPPORT);
if (ifra->ifra_prefixmask.sin6_len > sizeof(struct sockaddr_in6))
return(EINVAL);
if (ifra->ifra_prefixmask.sin6_len == sizeof(struct sockaddr_in6) &&
ifra->ifra_prefixmask.sin6_family == 0) {
ifra->ifra_prefixmask.sin6_family = AF_INET6;
}
if (ia == NULL && ifra->ifra_prefixmask.sin6_len == 0)
return(EINVAL);
if (ifra->ifra_prefixmask.sin6_len != 0) {
plen = in6_mask2len(&ifra->ifra_prefixmask.sin6_addr,
(u_char *)&ifra->ifra_prefixmask +
ifra->ifra_prefixmask.sin6_len);
if (plen <= 0)
return (EINVAL);
} else {
IFA_LOCK(&ia->ia_ifa);
plen = in6_mask2len(&ia->ia_prefixmask.sin6_addr, NULL);
IFA_UNLOCK(&ia->ia_ifa);
}
dst6 = ifra->ifra_dstaddr;
if (((ifp->if_flags & (IFF_POINTOPOINT|IFF_LOOPBACK)) != 0 ) &&
(dst6.sin6_family == AF_INET6)) {
int scopeid;
if ((error = in6_recoverscope(&dst6,
&ifra->ifra_dstaddr.sin6_addr,
ifp)) != 0)
return(error);
scopeid = in6_addr2scopeid(ifp, &dst6.sin6_addr);
if (dst6.sin6_scope_id == 0)
dst6.sin6_scope_id = scopeid;
else if (dst6.sin6_scope_id != scopeid)
return(EINVAL);
if ((error = in6_embedscope(&dst6.sin6_addr, &dst6, NULL, NULL,
NULL)) != 0)
return(error);
dst6.sin6_scope_id = 0;
}
if (ifra->ifra_dstaddr.sin6_family == AF_INET6) {
if ((ifp->if_flags & (IFF_POINTOPOINT|IFF_LOOPBACK)) == 0) {
log(LOG_INFO, "in6_update_ifa: a destination can be "
"specified for a p2p or a loopback IF only\n");
return(EINVAL);
}
if (plen != 128) {
log(LOG_INFO, "in6_update_ifa: prefixlen must be 128 "
"when dstaddr is specified\n");
return(EINVAL);
}
}
getmicrotime(&timenow);
lt = &ifra->ifra_lifetime;
if ((lt->ia6t_vltime != ND6_INFINITE_LIFETIME
|| (ifra->ifra_flags & IN6_IFF_TEMPORARY) != 0)
&& lt->ia6t_vltime + timenow.tv_sec < timenow.tv_sec) {
return EINVAL;
}
if (lt->ia6t_vltime == 0) {
log(LOG_INFO,
"in6_update_ifa: valid lifetime is 0 for %s\n",
ip6_sprintf(&ifra->ifra_addr.sin6_addr));
}
if ((lt->ia6t_pltime != ND6_INFINITE_LIFETIME
|| (ifra->ifra_flags & IN6_IFF_TEMPORARY) != 0)
&& lt->ia6t_pltime + timenow.tv_sec < timenow.tv_sec) {
return EINVAL;
}
if (ia == NULL) {
hostIsNew = 1;
ia = in6_ifaddr_alloc(how);
if (ia == NULL)
return (ENOBUFS);
ifnet_lock_exclusive(ifp);
IFA_LOCK(&ia->ia_ifa);
LIST_INIT(&ia->ia6_memberships);
ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
ia->ia_addr.sin6_family = AF_INET6;
ia->ia_addr.sin6_len = sizeof(ia->ia_addr);
ia->ia6_createtime = timenow.tv_sec;
if ((ifp->if_flags & (IFF_POINTOPOINT | IFF_LOOPBACK)) != 0) {
ia->ia_ifa.ifa_dstaddr
= (struct sockaddr *)&ia->ia_dstaddr;
} else {
ia->ia_ifa.ifa_dstaddr = NULL;
}
ia->ia_ifa.ifa_netmask
= (struct sockaddr *)&ia->ia_prefixmask;
ia->ia_ifp = ifp;
if_attach_ifa(ifp, &ia->ia_ifa);
IFA_ADDREF_LOCKED(&ia->ia_ifa);
IFA_UNLOCK(&ia->ia_ifa);
ifnet_lock_done(ifp);
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
IFA_ADDREF(&ia->ia_ifa);
if ((oia = in6_ifaddrs) != NULL) {
for ( ; oia->ia_next; oia = oia->ia_next)
continue;
oia->ia_next = ia;
} else {
in6_ifaddrs = ia;
}
lck_rw_done(&in6_ifaddr_rwlock);
} else {
IFA_ADDREF(&ia->ia_ifa);
}
ifa = &ia->ia_ifa;
IFA_LOCK(ifa);
ia->ia6_updatetime = timenow.tv_sec;
if (ifra->ifra_prefixmask.sin6_len) {
if (ia->ia_prefixmask.sin6_len &&
in6_mask2len(&ia->ia_prefixmask.sin6_addr, NULL) != plen) {
log(LOG_INFO, "in6_update_ifa: the prefix length of an"
" existing (%s) address should not be changed\n",
ip6_sprintf(&ia->ia_addr.sin6_addr));
error = EINVAL;
IFA_UNLOCK(ifa);
goto unlink;
}
ia->ia_prefixmask = ifra->ifra_prefixmask;
}
if (dst6.sin6_family == AF_INET6 &&
!IN6_ARE_ADDR_EQUAL(&dst6.sin6_addr, &ia->ia_dstaddr.sin6_addr)) {
if ((ia->ia_flags & IFA_ROUTE)) {
int e;
IFA_UNLOCK(ifa);
if ((e = rtinit(&(ia->ia_ifa), (int)RTM_DELETE,
RTF_HOST)) != 0) {
log(LOG_ERR, "in6_update_ifa: failed to remove "
"a route to the old destination: %s\n",
ip6_sprintf(&ia->ia_addr.sin6_addr));
}
IFA_LOCK(ifa);
} else {
ia->ia_flags &= ~IFA_ROUTE;
}
IFA_LOCK_ASSERT_HELD(ifa);
ia->ia_dstaddr = dst6;
}
ia->ia6_lifetime = ifra->ifra_lifetime;
if (ia->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME
|| (ifra->ifra_flags & IN6_IFF_TEMPORARY) != 0) {
ia->ia6_lifetime.ia6t_expire =
timenow.tv_sec + ia->ia6_lifetime.ia6t_vltime;
} else
ia->ia6_lifetime.ia6t_expire = 0;
if (ia->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME
|| (ifra->ifra_flags & IN6_IFF_TEMPORARY) != 0) {
ia->ia6_lifetime.ia6t_preferred =
timenow.tv_sec + ia->ia6_lifetime.ia6t_pltime;
} else
ia->ia6_lifetime.ia6t_preferred = 0;
IFA_UNLOCK(ifa);
if ((error = in6_ifinit(ifp, ia, &ifra->ifra_addr, hostIsNew)) != 0)
goto unlink;
IFA_LOCK(ifa);
ia->ia6_flags = ifra->ifra_flags;
if ((ifra->ifra_flags & IN6_IFF_DEPRECATED) != 0) {
ia->ia6_lifetime.ia6t_pltime = 0;
ia->ia6_lifetime.ia6t_preferred = timenow.tv_sec;
}
ia->ia6_flags &= ~IN6_IFF_DUPLICATED;
if (hostIsNew && in6if_do_dad(ifp))
in6_ifaddr_set_dadprogress(ia);
if (ia->ia6_flags & IN6_IFF_OPTIMISTIC)
flags &= ~IN6_IFAUPDATE_DADDELAY;
if (!hostIsNew) {
IFA_UNLOCK(ifa);
IFA_REMREF(ifa);
return (error);
}
IFA_LOCK_ASSERT_HELD(ifa);
if ((ifp->if_flags & IFF_MULTICAST) != 0) {
struct sockaddr_in6 mltaddr, mltmask;
struct in6_addr llsol;
IFA_UNLOCK(ifa);
bzero(&llsol, sizeof(struct in6_addr));
llsol.s6_addr32[0] = IPV6_ADDR_INT32_MLL;
llsol.s6_addr32[1] = 0;
llsol.s6_addr32[2] = htonl(1);
llsol.s6_addr32[3] = ifra->ifra_addr.sin6_addr.s6_addr32[3];
llsol.s6_addr8[12] = 0xff;
if ((error = in6_setscope(&llsol, ifp, NULL)) != 0) {
log(LOG_ERR, "in6_update_ifa: "
"in6_setscope failed\n");
goto cleanup;
}
delay = 0;
if ((flags & IN6_IFAUPDATE_DADDELAY)) {
delay = random() %
(MAX_RTR_SOLICITATION_DELAY * PR_SLOWHZ);
}
imm = in6_joingroup(ifp, &llsol, &error, delay);
if (imm == NULL) {
nd6log((LOG_WARNING,
"in6_update_ifa: addmulti failed for "
"%s on %s (errno=%d)\n",
ip6_sprintf(&llsol), if_name(ifp),
error));
in6_purgeaddr((struct ifaddr *)ia);
IFA_REMREF(ifa);
return (error);
}
in6m_sol = imm->i6mm_maddr;
IN6M_ADDREF(in6m_sol);
IFA_LOCK_SPIN(ifa);
LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
IFA_UNLOCK(ifa);
bzero(&mltmask, sizeof(mltmask));
mltmask.sin6_len = sizeof(struct sockaddr_in6);
mltmask.sin6_family = AF_INET6;
mltmask.sin6_addr = in6mask32;
#define MLTMASK_LEN 4
bzero(&mltaddr, sizeof(mltaddr));
mltaddr.sin6_len = sizeof(struct sockaddr_in6);
mltaddr.sin6_family = AF_INET6;
mltaddr.sin6_addr = in6addr_linklocal_allnodes;
if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL)) !=
0)
goto cleanup;
rt = rtalloc1_scoped((struct sockaddr *)&mltaddr, 0, 0UL,
ia->ia_ifp->if_index);
if (rt) {
if (memcmp(&mltaddr.sin6_addr, &((struct sockaddr_in6 *)
(void *)rt_key(rt))->sin6_addr, MLTMASK_LEN)) {
rtfree(rt);
rt = NULL;
}
}
if (!rt) {
error = rtrequest_scoped(RTM_ADD,
(struct sockaddr *)&mltaddr,
(struct sockaddr *)&ia->ia_addr,
(struct sockaddr *)&mltmask, RTF_UP | RTF_CLONING,
NULL, ia->ia_ifp->if_index);
if (error)
goto cleanup;
} else {
rtfree(rt);
}
imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error, 0);
if (!imm) {
nd6log((LOG_WARNING,
"in6_update_ifa: addmulti failed for "
"%s on %s (errno=%d)\n",
ip6_sprintf(&mltaddr.sin6_addr),
if_name(ifp), error));
goto cleanup;
}
IFA_LOCK_SPIN(ifa);
LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
IFA_UNLOCK(ifa);
#define hostnamelen strlen(hostname)
delay = 0;
if ((flags & IN6_IFAUPDATE_DADDELAY)) {
delay = random() %
(MAX_RTR_SOLICITATION_DELAY * PR_SLOWHZ);
}
if (in6_nigroup(ifp, hostname, hostnamelen, &mltaddr.sin6_addr)
== 0) {
imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error,
delay);
if (!imm) {
nd6log((LOG_WARNING, "in6_update_ifa: "
"addmulti failed for %s on %s "
"(errno=%d)\n",
ip6_sprintf(&mltaddr.sin6_addr),
if_name(ifp), error));
} else {
IFA_LOCK_SPIN(ifa);
LIST_INSERT_HEAD(&ia->ia6_memberships,
imm, i6mm_chain);
IFA_UNLOCK(ifa);
}
}
#undef hostnamelen
mltaddr.sin6_addr = in6addr_nodelocal_allnodes;
if ((error = in6_setscope(&mltaddr.sin6_addr, ifp, NULL))
!= 0)
goto cleanup;
rt = rtalloc1_scoped((struct sockaddr *)&mltaddr, 0, 0UL,
ia->ia_ifp->if_index);
if (rt) {
if (memcmp(&mltaddr.sin6_addr, &((struct sockaddr_in6 *)
(void *)rt_key(rt))->sin6_addr, MLTMASK_LEN)) {
rtfree(rt);
rt = NULL;
}
}
if (!rt) {
error = rtrequest_scoped(RTM_ADD,
(struct sockaddr *)&mltaddr,
(struct sockaddr *)&ia->ia_addr,
(struct sockaddr *)&mltmask, RTF_UP | RTF_CLONING,
NULL, ia->ia_ifp->if_index);
if (error)
goto cleanup;
} else
rtfree(rt);
imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error, 0);
if (!imm) {
nd6log((LOG_WARNING, "in6_update_ifa: "
"addmulti failed for %s on %s "
"(errno=%d)\n",
ip6_sprintf(&mltaddr.sin6_addr),
if_name(ifp), error));
goto cleanup;
}
IFA_LOCK(ifa);
LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
#undef MLTMASK_LEN
}
IFA_LOCK_ASSERT_HELD(ifa);
if ((error = nd6_ifattach(ifp)) != 0)
return error;
if (hostIsNew && in6if_do_dad(ifp) &&
((ifra->ifra_flags & IN6_IFF_NODAD) == 0) &&
(ia->ia6_flags & IN6_IFF_DADPROGRESS))
{
int mindelay, maxdelay;
int *delayptr, delayval;
IFA_UNLOCK(ifa);
delayptr = NULL;
if ((flags & IN6_IFAUPDATE_DADDELAY)) {
mindelay = 0;
if (in6m_sol != NULL) {
IN6M_LOCK(in6m_sol);
if (in6m_sol->in6m_state == MLD_REPORTING_MEMBER)
mindelay = in6m_sol->in6m_timer;
IN6M_UNLOCK(in6m_sol);
}
maxdelay = MAX_RTR_SOLICITATION_DELAY * hz;
if (maxdelay - mindelay == 0)
delayval = 0;
else {
delayval =
(random() % (maxdelay - mindelay)) +
mindelay;
}
delayptr = &delayval;
}
nd6_dad_start((struct ifaddr *)ia, delayptr);
} else {
IFA_UNLOCK(ifa);
}
done:
if (ifa != NULL)
IFA_REMREF(ifa);
if (in6m_sol != NULL)
IN6M_REMREF(in6m_sol);
return (error);
unlink:
if (hostIsNew) {
in6_unlink_ifa(ia, ifp);
}
goto done;
cleanup:
in6_purgeaddr(&ia->ia_ifa);
goto done;
}
void
in6_purgeaddr(struct ifaddr *ifa)
{
struct ifnet *ifp = ifa->ifa_ifp;
struct in6_ifaddr *ia = (struct in6_ifaddr *) ifa;
struct in6_multi_mship *imm;
lck_mtx_assert(nd6_mutex, LCK_MTX_ASSERT_NOTOWNED);
nd6_dad_stop(ifa);
IFA_LOCK(ifa);
if ((ia->ia_flags & IFA_ROUTE) != 0 && ia->ia_dstaddr.sin6_len != 0) {
int e;
IFA_UNLOCK(ifa);
if ((e = rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST))
!= 0) {
log(LOG_ERR, "in6_purgeaddr: failed to remove "
"a route to the p2p destination: %s on %s, "
"errno=%d\n",
ip6_sprintf(&ia->ia_addr.sin6_addr), if_name(ifp),
e);
} else {
IFA_LOCK_SPIN(ifa);
ia->ia_flags &= ~IFA_ROUTE;
IFA_UNLOCK(ifa);
}
} else {
IFA_UNLOCK(ifa);
}
IFA_LOCK_ASSERT_NOTHELD(ifa);
in6_ifremloop(&(ia->ia_ifa));
IFA_LOCK(ifa);
while ((imm = ia->ia6_memberships.lh_first) != NULL) {
LIST_REMOVE(imm, i6mm_chain);
IFA_UNLOCK(ifa);
in6_leavegroup(imm);
IFA_LOCK(ifa);
}
IFA_UNLOCK(ifa);
in6_unlink_ifa(ia, ifp);
in6_post_msg(ifp, KEV_INET6_ADDR_DELETED, ia);
}
static void
in6_unlink_ifa(struct in6_ifaddr *ia, struct ifnet *ifp)
{
struct in6_ifaddr *oia;
struct ifaddr *ifa;
int unlinked;
lck_mtx_assert(nd6_mutex, LCK_MTX_ASSERT_NOTOWNED);
ifa = &ia->ia_ifa;
IFA_ADDREF(ifa);
ifnet_lock_exclusive(ifp);
IFA_LOCK(ifa);
if (ifa->ifa_debug & IFD_ATTACHED)
if_detach_ifa(ifp, ifa);
IFA_UNLOCK(ifa);
ifnet_lock_done(ifp);
unlinked = 1;
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
oia = ia;
if (oia == (ia = in6_ifaddrs)) {
in6_ifaddrs = ia->ia_next;
} else {
while (ia->ia_next && (ia->ia_next != oia))
ia = ia->ia_next;
if (ia->ia_next) {
ia->ia_next = oia->ia_next;
} else {
printf("Couldn't unlink in6_ifaddr from in6_ifaddr\n");
unlinked = 0;
}
}
ifa = &oia->ia_ifa;
IFA_LOCK(ifa);
if ((oia->ia6_flags & IN6_IFF_AUTOCONF) != 0) {
if (oia->ia6_ndpr == NULL) {
log(LOG_NOTICE, "in6_unlink_ifa: autoconf'ed address "
"%p has no prefix\n", oia);
} else {
struct nd_prefix *pr = oia->ia6_ndpr;
oia->ia6_flags &= ~IN6_IFF_AUTOCONF;
oia->ia6_ndpr = NULL;
NDPR_LOCK(pr);
VERIFY(pr->ndpr_addrcnt != 0);
pr->ndpr_addrcnt--;
NDPR_UNLOCK(pr);
NDPR_REMREF(pr);
}
IFA_UNLOCK(ifa);
lck_rw_done(&in6_ifaddr_rwlock);
lck_mtx_lock(nd6_mutex);
pfxlist_onlink_check();
lck_mtx_unlock(nd6_mutex);
} else {
IFA_UNLOCK(ifa);
lck_rw_done(&in6_ifaddr_rwlock);
}
if (unlinked)
IFA_REMREF(ifa);
IFA_REMREF(ifa);
}
void
in6_purgeif(struct ifnet *ifp)
{
struct in6_ifaddr *ia;
if (ifp == NULL)
return;
lck_mtx_assert(nd6_mutex, LCK_MTX_ASSERT_NOTOWNED);
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
ia = in6_ifaddrs;
while (ia != NULL) {
if (ia->ia_ifa.ifa_ifp != ifp) {
ia = ia->ia_next;
continue;
}
IFA_ADDREF(&ia->ia_ifa);
lck_rw_done(&in6_ifaddr_rwlock);
in6_purgeaddr(&ia->ia_ifa);
IFA_REMREF(&ia->ia_ifa);
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
ia = in6_ifaddrs;
}
lck_rw_done(&in6_ifaddr_rwlock);
in6_ifdetach(ifp);
}
static int
in6_lifaddr_ioctl(struct socket *so, u_long cmd, struct if_laddrreq *iflr,
struct ifnet *ifp, struct proc *p)
{
struct ifaddr *ifa = NULL;
struct sockaddr *sa;
int p64 = proc_is64bit(p);
VERIFY(ifp != NULL);
switch (cmd) {
case SIOCGLIFADDR:
if ((iflr->flags & IFLR_PREFIX) == 0)
break;
case SIOCALIFADDR:
case SIOCDLIFADDR:
sa = (struct sockaddr *)&iflr->addr;
if (sa->sa_family != AF_INET6)
return EINVAL;
if (sa->sa_len != sizeof(struct sockaddr_in6))
return EINVAL;
sa = (struct sockaddr *)&iflr->dstaddr;
if (sa->sa_family && sa->sa_family != AF_INET6)
return EINVAL;
if (sa->sa_len && sa->sa_len != sizeof(struct sockaddr_in6))
return EINVAL;
break;
default:
#if 0
panic("invalid cmd to in6_lifaddr_ioctl");
#else
return EOPNOTSUPP;
#endif
}
if (sizeof(struct in6_addr) * 8 < iflr->prefixlen)
return EINVAL;
switch (cmd) {
case SIOCALIFADDR:
{
struct in6_aliasreq ifra;
struct in6_addr hostaddr;
int prefixlen;
int hostid_found = 0;
if ((iflr->flags & IFLR_PREFIX) != 0) {
struct sockaddr_in6 *sin6;
ifa = (struct ifaddr *)in6ifa_ifpforlinklocal(ifp, 0);
if (!ifa)
return EADDRNOTAVAIL;
IFA_LOCK_SPIN(ifa);
hostaddr = *IFA_IN6(ifa);
IFA_UNLOCK(ifa);
hostid_found = 1;
IFA_REMREF(ifa);
ifa = NULL;
if (64 < iflr->prefixlen)
return EINVAL;
prefixlen = iflr->prefixlen;
sin6 = (struct sockaddr_in6 *)&iflr->addr;
if (sin6->sin6_addr.s6_addr32[2] != 0 ||
sin6->sin6_addr.s6_addr32[3] != 0) {
return EINVAL;
}
} else
prefixlen = iflr->prefixlen;
bzero(&ifra, sizeof(ifra));
bcopy(iflr->iflr_name, ifra.ifra_name, sizeof(ifra.ifra_name));
bcopy(&iflr->addr, &ifra.ifra_addr,
((struct sockaddr *)&iflr->addr)->sa_len);
if (hostid_found) {
ifra.ifra_addr.sin6_addr.s6_addr32[2] =
hostaddr.s6_addr32[2];
ifra.ifra_addr.sin6_addr.s6_addr32[3] =
hostaddr.s6_addr32[3];
}
if (((struct sockaddr *)&iflr->dstaddr)->sa_family) {
bcopy(&iflr->dstaddr, &ifra.ifra_dstaddr,
((struct sockaddr *)&iflr->dstaddr)->sa_len);
if (hostid_found) {
ifra.ifra_dstaddr.sin6_addr.s6_addr32[2] =
hostaddr.s6_addr32[2];
ifra.ifra_dstaddr.sin6_addr.s6_addr32[3] =
hostaddr.s6_addr32[3];
}
}
ifra.ifra_prefixmask.sin6_len = sizeof(struct sockaddr_in6);
in6_prefixlen2mask(&ifra.ifra_prefixmask.sin6_addr, prefixlen);
ifra.ifra_flags = iflr->flags & ~IFLR_PREFIX;
if (!p64) {
#if defined(__LP64__)
struct in6_aliasreq_32 ifra_32;
in6_aliasreq_64_to_32((struct in6_aliasreq_64 *)&ifra,
&ifra_32);
return (in6_control(so, SIOCAIFADDR_IN6_32,
(caddr_t)&ifra_32, ifp, p));
#else
return (in6_control(so, SIOCAIFADDR_IN6,
(caddr_t)&ifra, ifp, p));
#endif
} else {
#if defined(__LP64__)
return (in6_control(so, SIOCAIFADDR_IN6,
(caddr_t)&ifra, ifp, p));
#else
struct in6_aliasreq_64 ifra_64;
in6_aliasreq_32_to_64((struct in6_aliasreq_32 *)&ifra,
&ifra_64);
return (in6_control(so, SIOCAIFADDR_IN6_64,
(caddr_t)&ifra_64, ifp, p));
#endif
}
}
case SIOCGLIFADDR:
case SIOCDLIFADDR:
{
struct in6_ifaddr *ia;
struct in6_addr mask, candidate, match;
struct sockaddr_in6 *sin6;
int cmp;
bzero(&mask, sizeof(mask));
if (iflr->flags & IFLR_PREFIX) {
in6_prefixlen2mask(&mask, iflr->prefixlen);
sin6 = (struct sockaddr_in6 *)&iflr->addr;
bcopy(&sin6->sin6_addr, &match, sizeof(match));
match.s6_addr32[0] &= mask.s6_addr32[0];
match.s6_addr32[1] &= mask.s6_addr32[1];
match.s6_addr32[2] &= mask.s6_addr32[2];
match.s6_addr32[3] &= mask.s6_addr32[3];
if (bcmp(&match, &sin6->sin6_addr, sizeof(match)))
return EINVAL;
cmp = 1;
} else {
if (cmd == SIOCGLIFADDR) {
cmp = 0;
} else {
in6_prefixlen2mask(&mask, 128);
sin6 = (struct sockaddr_in6 *)&iflr->addr;
bcopy(&sin6->sin6_addr, &match, sizeof(match));
cmp = 1;
}
}
ifnet_lock_shared(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list)
{
IFA_LOCK(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
continue;
}
if (!cmp) {
IFA_UNLOCK(ifa);
break;
}
bcopy(IFA_IN6(ifa), &candidate, sizeof(candidate));
IFA_UNLOCK(ifa);
if (IN6_IS_ADDR_LINKLOCAL(&candidate))
candidate.s6_addr16[1] = 0;
candidate.s6_addr32[0] &= mask.s6_addr32[0];
candidate.s6_addr32[1] &= mask.s6_addr32[1];
candidate.s6_addr32[2] &= mask.s6_addr32[2];
candidate.s6_addr32[3] &= mask.s6_addr32[3];
if (IN6_ARE_ADDR_EQUAL(&candidate, &match))
break;
}
if (ifa != NULL)
IFA_ADDREF(ifa);
ifnet_lock_done(ifp);
if (!ifa)
return EADDRNOTAVAIL;
ia = ifa2ia6(ifa);
if (cmd == SIOCGLIFADDR) {
struct sockaddr_in6 *s6;
IFA_LOCK(ifa);
bcopy(&ia->ia_addr, &iflr->addr, ia->ia_addr.sin6_len);
s6 = (struct sockaddr_in6 *)&iflr->addr;
if (IN6_IS_ADDR_LINKLOCAL(&s6->sin6_addr)) {
s6->sin6_addr.s6_addr16[1] = 0;
s6->sin6_scope_id =
in6_addr2scopeid(ifp, &s6->sin6_addr);
}
if ((ifp->if_flags & IFF_POINTOPOINT) != 0) {
bcopy(&ia->ia_dstaddr, &iflr->dstaddr,
ia->ia_dstaddr.sin6_len);
s6 = (struct sockaddr_in6 *)&iflr->dstaddr;
if (IN6_IS_ADDR_LINKLOCAL(&s6->sin6_addr)) {
s6->sin6_addr.s6_addr16[1] = 0;
s6->sin6_scope_id =
in6_addr2scopeid(ifp,
&s6->sin6_addr);
}
} else
bzero(&iflr->dstaddr, sizeof(iflr->dstaddr));
iflr->prefixlen =
in6_mask2len(&ia->ia_prefixmask.sin6_addr,
NULL);
iflr->flags = ia->ia6_flags;
IFA_UNLOCK(ifa);
IFA_REMREF(ifa);
return 0;
} else {
struct in6_aliasreq ifra;
bzero(&ifra, sizeof(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.sin6_len);
if ((ifp->if_flags & IFF_POINTOPOINT) != 0) {
bcopy(&ia->ia_dstaddr, &ifra.ifra_dstaddr,
ia->ia_dstaddr.sin6_len);
} else {
bzero(&ifra.ifra_dstaddr,
sizeof(ifra.ifra_dstaddr));
}
bcopy(&ia->ia_prefixmask, &ifra.ifra_dstaddr,
ia->ia_prefixmask.sin6_len);
ifra.ifra_flags = ia->ia6_flags;
IFA_UNLOCK(ifa);
IFA_REMREF(ifa);
if (!p64) {
#if defined(__LP64__)
struct in6_aliasreq_32 ifra_32;
in6_aliasreq_64_to_32(
(struct in6_aliasreq_64 *)&ifra, &ifra_32);
return (in6_control(so, SIOCDIFADDR_IN6,
(caddr_t)&ifra_32, ifp, p));
#else
return (in6_control(so, SIOCDIFADDR_IN6,
(caddr_t)&ifra, ifp, p));
#endif
} else {
#if defined(__LP64__)
return (in6_control(so, SIOCDIFADDR_IN6,
(caddr_t)&ifra, ifp, p));
#else
struct in6_aliasreq_64 ifra_64;
in6_aliasreq_32_to_64(
(struct in6_aliasreq_32 *)&ifra, &ifra_64);
return (in6_control(so, SIOCDIFADDR_IN6,
(caddr_t)&ifra_64, ifp, p));
#endif
}
}
}
}
return EOPNOTSUPP;
}
static int
in6_ifinit(ifp, ia, sin6, newhost)
struct ifnet *ifp;
struct in6_ifaddr *ia;
struct sockaddr_in6 *sin6;
int newhost;
{
int error = 0, plen, ifacount = 0;
struct ifaddr *ifa;
ifnet_lock_shared(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list)
{
IFA_LOCK_SPIN(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
continue;
}
ifacount++;
IFA_UNLOCK(ifa);
}
ifnet_lock_done(ifp);
ifa = &ia->ia_ifa;
IFA_LOCK_SPIN(ifa);
ia->ia_addr = *sin6;
IFA_UNLOCK(ifa);
if (ifacount <= 1 &&
(error = ifnet_ioctl(ifp, PF_INET6, SIOCSIFADDR, ia))) {
if (error == EOPNOTSUPP)
error = 0;
else if (error)
return(error);
}
IFA_LOCK(ifa);
ia->ia_ifa.ifa_metric = ifp->if_metric;
plen = in6_mask2len(&ia->ia_prefixmask.sin6_addr, NULL);
if (plen == 128 && ia->ia_dstaddr.sin6_family == AF_INET6) {
IFA_UNLOCK(ifa);
if ((error = rtinit(&(ia->ia_ifa), (int)RTM_ADD,
RTF_UP | RTF_HOST)) != 0)
return(error);
IFA_LOCK(ifa);
ia->ia_flags |= IFA_ROUTE;
}
IFA_LOCK_ASSERT_HELD(ifa);
if (plen < 128) {
ia->ia_ifa.ifa_flags |= RTF_CLONING;
}
if (newhost) {
ia->ia_ifa.ifa_rtrequest = nd6_rtrequest;
IFA_UNLOCK(ifa);
in6_ifaddloop(&(ia->ia_ifa));
} else {
IFA_UNLOCK(ifa);
}
return(error);
}
void
in6_purgeaddrs(struct ifnet *ifp)
{
in6_purgeif(ifp);
}
struct in6_ifaddr *
in6ifa_ifpforlinklocal(ifp, ignoreflags)
struct ifnet *ifp;
int ignoreflags;
{
struct ifaddr *ifa;
ifnet_lock_shared(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list)
{
IFA_LOCK_SPIN(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
continue;
}
if (IN6_IS_ADDR_LINKLOCAL(IFA_IN6(ifa))) {
if ((((struct in6_ifaddr *)ifa)->ia6_flags &
ignoreflags) != 0) {
IFA_UNLOCK(ifa);
continue;
}
IFA_ADDREF_LOCKED(ifa);
IFA_UNLOCK(ifa);
break;
}
IFA_UNLOCK(ifa);
}
ifnet_lock_done(ifp);
return((struct in6_ifaddr *)ifa);
}
struct in6_ifaddr *
in6ifa_ifpwithaddr(ifp, addr)
struct ifnet *ifp;
struct in6_addr *addr;
{
struct ifaddr *ifa;
ifnet_lock_shared(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list)
{
IFA_LOCK_SPIN(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
continue;
}
if (IN6_ARE_ADDR_EQUAL(addr, IFA_IN6(ifa))) {
IFA_ADDREF_LOCKED(ifa);
IFA_UNLOCK(ifa);
break;
}
IFA_UNLOCK(ifa);
}
ifnet_lock_done(ifp);
return((struct in6_ifaddr *)ifa);
}
struct in6_ifaddr *
in6ifa_prproxyaddr(struct in6_addr *addr)
{
struct in6_ifaddr *ia;
lck_rw_lock_shared(&in6_ifaddr_rwlock);
for (ia = in6_ifaddrs; ia; ia = ia->ia_next) {
IFA_LOCK(&ia->ia_ifa);
if (IN6_ARE_ADDR_EQUAL(addr, IFA_IN6(&ia->ia_ifa))) {
IFA_ADDREF_LOCKED(&ia->ia_ifa);
IFA_UNLOCK(&ia->ia_ifa);
break;
}
IFA_UNLOCK(&ia->ia_ifa);
}
lck_rw_done(&in6_ifaddr_rwlock);
if (ia != NULL && !nd6_prproxy_ifaddr(ia)) {
IFA_REMREF(&ia->ia_ifa);
ia = NULL;
}
return (ia);
}
static char digits[] = "0123456789abcdef";
static int ip6round = 0;
char *
ip6_sprintf(addr)
const struct in6_addr *addr;
{
static char ip6buf[8][48];
int i;
char *cp;
const u_short *a = (const u_short *)addr;
const u_char *d;
int dcolon = 0;
ip6round = (ip6round + 1) & 7;
cp = ip6buf[ip6round];
for (i = 0; i < 8; i++) {
if (dcolon == 1) {
if (*a == 0) {
if (i == 7)
*cp++ = ':';
a++;
continue;
} else
dcolon = 2;
}
if (*a == 0) {
if (dcolon == 0 && *(a + 1) == 0) {
if (i == 0)
*cp++ = ':';
*cp++ = ':';
dcolon = 1;
} else {
*cp++ = '0';
*cp++ = ':';
}
a++;
continue;
}
d = (const u_char *)a;
*cp++ = digits[*d >> 4];
*cp++ = digits[*d++ & 0xf];
*cp++ = digits[*d >> 4];
*cp++ = digits[*d & 0xf];
*cp++ = ':';
a++;
}
*--cp = 0;
return(ip6buf[ip6round]);
}
int
in6addr_local(struct in6_addr *in6)
{
struct rtentry *rt;
struct sockaddr_in6 sin6;
int local = 0;
if (IN6_IS_ADDR_LOOPBACK(in6) || IN6_IS_SCOPE_LINKLOCAL(in6))
return (1);
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof (sin6);
bcopy(in6, &sin6.sin6_addr, sizeof (*in6));
rt = rtalloc1((struct sockaddr *)&sin6, 0, 0);
if (rt != NULL) {
RT_LOCK_SPIN(rt);
if (rt->rt_gateway->sa_family == AF_LINK)
local = 1;
RT_UNLOCK(rt);
rtfree(rt);
} else {
local = in6_localaddr(in6);
}
return (local);
}
int
in6_localaddr(struct in6_addr *in6)
{
struct in6_ifaddr *ia;
if (IN6_IS_ADDR_LOOPBACK(in6) || IN6_IS_ADDR_LINKLOCAL(in6))
return (1);
lck_rw_lock_shared(&in6_ifaddr_rwlock);
for (ia = in6_ifaddrs; ia; ia = ia->ia_next) {
IFA_LOCK_SPIN(&ia->ia_ifa);
if (IN6_ARE_MASKED_ADDR_EQUAL(in6, &ia->ia_addr.sin6_addr,
&ia->ia_prefixmask.sin6_addr)) {
IFA_UNLOCK(&ia->ia_ifa);
lck_rw_done(&in6_ifaddr_rwlock);
return (1);
}
IFA_UNLOCK(&ia->ia_ifa);
}
lck_rw_done(&in6_ifaddr_rwlock);
return (0);
}
int
in6_is_addr_deprecated(struct sockaddr_in6 *sa6)
{
struct in6_ifaddr *ia;
lck_rw_lock_shared(&in6_ifaddr_rwlock);
for (ia = in6_ifaddrs; ia; ia = ia->ia_next) {
IFA_LOCK_SPIN(&ia->ia_ifa);
if (IN6_ARE_ADDR_EQUAL(&ia->ia_addr.sin6_addr,
&sa6->sin6_addr) &&
(ia->ia6_flags & IN6_IFF_DEPRECATED) != 0) {
IFA_UNLOCK(&ia->ia_ifa);
lck_rw_done(&in6_ifaddr_rwlock);
return(1);
}
IFA_UNLOCK(&ia->ia_ifa);
}
lck_rw_done(&in6_ifaddr_rwlock);
return(0);
}
int
in6_matchlen(src, dst)
struct in6_addr *src, *dst;
{
int match = 0;
u_char *s = (u_char *)src, *d = (u_char *)dst;
u_char *lim = s + 16, r;
while (s < lim)
if ((r = (*d++ ^ *s++)) != 0) {
while (r < 128) {
match++;
r <<= 1;
}
break;
} else
match += 8;
return match;
}
int
in6_are_prefix_equal(p1, p2, len)
struct in6_addr *p1, *p2;
int len;
{
int bytelen, bitlen;
if (0 > len || len > 128) {
log(LOG_ERR, "in6_are_prefix_equal: invalid prefix length(%d)\n",
len);
return(0);
}
bytelen = len / 8;
bitlen = len % 8;
if (bcmp(&p1->s6_addr, &p2->s6_addr, bytelen))
return(0);
if (bitlen != 0 &&
p1->s6_addr[bytelen] >> (8 - bitlen) !=
p2->s6_addr[bytelen] >> (8 - bitlen))
return(0);
return(1);
}
void
in6_prefixlen2mask(maskp, len)
struct in6_addr *maskp;
int len;
{
u_char maskarray[8] = {0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff};
int bytelen, bitlen, i;
if (0 > len || len > 128) {
log(LOG_ERR, "in6_prefixlen2mask: invalid prefix length(%d)\n",
len);
return;
}
bzero(maskp, sizeof(*maskp));
bytelen = len / 8;
bitlen = len % 8;
for (i = 0; i < bytelen; i++)
maskp->s6_addr[i] = 0xff;
if (bitlen)
maskp->s6_addr[bytelen] = maskarray[bitlen - 1];
}
struct in6_ifaddr *
in6_ifawithscope(
struct ifnet *oifp,
struct in6_addr *dst)
{
int dst_scope = in6_addrscope(dst), src_scope, best_scope = 0;
int blen = -1;
struct ifaddr *ifa;
struct ifnet *ifp;
struct in6_ifaddr *ifa_best = NULL;
if (oifp == NULL) {
return(NULL);
}
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp, &ifnet_head, if_list) {
if (in6_addr2scopeid(ifp, dst) != in6_addr2scopeid(oifp, dst))
continue;
ifnet_lock_shared(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list)
{
int tlen = -1, dscopecmp, bscopecmp, matchcmp;
IFA_LOCK(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
continue;
}
src_scope = in6_addrscope(IFA_IN6(ifa));
if (((struct in6_ifaddr *)ifa)->ia6_flags &
IN6_IFF_NOTREADY) {
IFA_UNLOCK(ifa);
continue;
}
if (((struct in6_ifaddr *)ifa)->ia6_flags &
IN6_IFF_ANYCAST) {
IFA_UNLOCK(ifa);
continue;
}
if (((struct in6_ifaddr *)ifa)->ia6_flags &
IN6_IFF_DETACHED) {
IFA_UNLOCK(ifa);
continue;
}
if (ifa_best == NULL)
goto replace;
if (IN6_ARE_SCOPE_CMP(best_scope, dst_scope) < 0 &&
IN6_ARE_SCOPE_CMP(src_scope, dst_scope) >= 0)
goto replace;
if (IN6_ARE_SCOPE_CMP(src_scope, dst_scope) < 0 &&
IN6_ARE_SCOPE_CMP(best_scope, dst_scope) >= 0) {
IFA_UNLOCK(ifa);
continue;
}
if (((struct in6_ifaddr *)ifa)->ia6_flags &
IN6_IFF_DEPRECATED) {
if (!ip6_use_deprecated) {
IFA_UNLOCK(ifa);
continue;
}
if ((ifa_best->ia6_flags & IN6_IFF_DEPRECATED)
== 0) {
IFA_UNLOCK(ifa);
continue;
}
}
if ((ifa_best->ia6_flags & IN6_IFF_DEPRECATED) &&
(((struct in6_ifaddr *)ifa)->ia6_flags &
IN6_IFF_DEPRECATED) == 0)
goto replace;
if (ip6_use_tempaddr) {
struct in6_ifaddr *ifat;
ifat = (struct in6_ifaddr *)ifa;
if ((ifa_best->ia6_flags &
(IN6_IFF_AUTOCONF|IN6_IFF_TEMPORARY))
== IN6_IFF_AUTOCONF &&
(ifat->ia6_flags &
(IN6_IFF_AUTOCONF|IN6_IFF_TEMPORARY))
== (IN6_IFF_AUTOCONF|IN6_IFF_TEMPORARY)) {
goto replace;
}
if ((ifa_best->ia6_flags &
(IN6_IFF_AUTOCONF|IN6_IFF_TEMPORARY))
== (IN6_IFF_AUTOCONF|IN6_IFF_TEMPORARY) &&
(ifat->ia6_flags &
(IN6_IFF_AUTOCONF|IN6_IFF_TEMPORARY))
== IN6_IFF_AUTOCONF) {
IFA_UNLOCK(ifa);
continue;
}
}
dscopecmp = IN6_ARE_SCOPE_CMP(src_scope, dst_scope);
bscopecmp = IN6_ARE_SCOPE_CMP(src_scope, best_scope);
if (bscopecmp == 0) {
struct ifnet *bifp = ifa_best->ia_ifp;
if (bifp == oifp && ifp != oifp) {
IFA_UNLOCK(ifa);
continue;
}
if (bifp != oifp && ifp == oifp)
goto replace;
tlen = in6_matchlen(IFA_IN6(ifa), dst);
matchcmp = tlen - blen;
if (matchcmp > 0)
goto replace;
IFA_UNLOCK(ifa);
continue;
}
if (dscopecmp > 0) {
if (bscopecmp > 0) {
IFA_UNLOCK(ifa);
continue;
}
goto replace;
}
if (dscopecmp < 0) {
if (bscopecmp > 0)
goto replace;
IFA_UNLOCK(ifa);
continue;
}
if (bscopecmp < 0)
goto replace;
replace:
IFA_ADDREF_LOCKED(ifa);
blen = tlen >= 0 ? tlen :
in6_matchlen(IFA_IN6(ifa), dst);
best_scope = in6_addrscope(&ifa2ia6(ifa)->ia_addr.sin6_addr);
IFA_UNLOCK(ifa);
if (ifa_best)
IFA_REMREF(&ifa_best->ia_ifa);
ifa_best = (struct in6_ifaddr *)ifa;
}
ifnet_lock_done(ifp);
}
ifnet_head_done();
if (ifa_best == NULL)
ip6stat.ip6s_sources_none++;
else {
IFA_LOCK_SPIN(&ifa_best->ia_ifa);
if (oifp == ifa_best->ia_ifp)
ip6stat.ip6s_sources_sameif[best_scope]++;
else
ip6stat.ip6s_sources_otherif[best_scope]++;
if (best_scope == dst_scope)
ip6stat.ip6s_sources_samescope[best_scope]++;
else
ip6stat.ip6s_sources_otherscope[best_scope]++;
if ((ifa_best->ia6_flags & IN6_IFF_DEPRECATED) != 0)
ip6stat.ip6s_sources_deprecated[best_scope]++;
IFA_UNLOCK(&ifa_best->ia_ifa);
}
return(ifa_best);
}
struct in6_ifaddr *
in6_ifawithifp(
struct ifnet *ifp,
struct in6_addr *dst)
{
int dst_scope = in6_addrscope(dst), blen = -1, tlen;
struct ifaddr *ifa;
struct in6_ifaddr *besta = NULL;
struct in6_ifaddr *dep[2];
dep[0] = dep[1] = NULL;
ifnet_lock_shared(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list)
{
IFA_LOCK(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
continue;
}
if (ifa2ia6(ifa)->ia6_flags & IN6_IFF_ANYCAST) {
IFA_UNLOCK(ifa);
continue;
}
if (ifa2ia6(ifa)->ia6_flags & IN6_IFF_NOTREADY) {
IFA_UNLOCK(ifa);
continue;
}
if (ifa2ia6(ifa)->ia6_flags & IN6_IFF_DETACHED) {
IFA_UNLOCK(ifa);
continue;
}
if (ifa2ia6(ifa)->ia6_flags & IN6_IFF_DEPRECATED) {
if (ip6_use_deprecated) {
IFA_ADDREF_LOCKED(ifa);
IFA_UNLOCK(ifa);
if (dep[0] != NULL)
IFA_REMREF(&dep[0]->ia_ifa);
dep[0] = (struct in6_ifaddr *)ifa;
} else {
IFA_UNLOCK(ifa);
}
continue;
}
if (dst_scope == in6_addrscope(IFA_IN6(ifa))) {
if (besta) {
if (blen == -1) {
IFA_UNLOCK(ifa);
IFA_LOCK(&besta->ia_ifa);
blen = in6_matchlen(&besta->ia_addr.sin6_addr, dst);
IFA_UNLOCK(&besta->ia_ifa);
IFA_LOCK(ifa);
}
tlen = in6_matchlen(IFA_IN6(ifa), dst);
if (tlen > blen) {
blen = tlen;
IFA_ADDREF_LOCKED(ifa);
IFA_UNLOCK(ifa);
IFA_REMREF(&besta->ia_ifa);
besta = (struct in6_ifaddr *)ifa;
} else {
IFA_UNLOCK(ifa);
}
} else {
besta = (struct in6_ifaddr *)ifa;
IFA_ADDREF_LOCKED(ifa);
IFA_UNLOCK(ifa);
}
} else {
IFA_UNLOCK(ifa);
}
}
if (besta) {
ifnet_lock_done(ifp);
if (dep[0] != NULL)
IFA_REMREF(&dep[0]->ia_ifa);
return(besta);
}
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list)
{
IFA_LOCK(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
continue;
}
if (ifa2ia6(ifa)->ia6_flags & IN6_IFF_ANYCAST) {
IFA_UNLOCK(ifa);
continue;
}
if (ifa2ia6(ifa)->ia6_flags & IN6_IFF_NOTREADY) {
IFA_UNLOCK(ifa);
continue;
}
if (ifa2ia6(ifa)->ia6_flags & IN6_IFF_DETACHED) {
IFA_UNLOCK(ifa);
continue;
}
if (ifa2ia6(ifa)->ia6_flags & IN6_IFF_DEPRECATED) {
if (ip6_use_deprecated) {
IFA_ADDREF_LOCKED(ifa);
IFA_UNLOCK(ifa);
if (dep[1] != NULL)
IFA_REMREF(&dep[1]->ia_ifa);
dep[1] = (struct in6_ifaddr *)ifa;
} else {
IFA_UNLOCK(ifa);
}
continue;
}
IFA_ADDREF_LOCKED(ifa);
IFA_UNLOCK(ifa);
ifnet_lock_done(ifp);
if (dep[0] != NULL)
IFA_REMREF(&dep[0]->ia_ifa);
if (dep[1] != NULL)
IFA_REMREF(&dep[1]->ia_ifa);
return (struct in6_ifaddr *)ifa;
}
ifnet_lock_done(ifp);
if (dep[0]) {
if (dep[1] != NULL)
IFA_REMREF(&dep[1]->ia_ifa);
return dep[0];
}
if (dep[1])
return dep[1];
return NULL;
}
int
in6_if_up(
struct ifnet *ifp,
struct in6_aliasreq *ifra)
{
struct ifaddr *ifa;
struct in6_ifaddr *ia;
int dad_delay;
int error;
error = in6_ifattach(ifp, NULL, ifra);
if (error != 0)
return error;
dad_delay = 0;
ifnet_lock_exclusive(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list)
{
IFA_LOCK_SPIN(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
continue;
}
ia = (struct in6_ifaddr *)ifa;
if (ia->ia6_flags & IN6_IFF_DADPROGRESS) {
IFA_UNLOCK(ifa);
nd6_dad_start(ifa, &dad_delay);
} else {
IFA_UNLOCK(ifa);
}
}
ifnet_lock_done(ifp);
return 0;
}
int
in6if_do_dad(
struct ifnet *ifp)
{
if ((ifp->if_flags & IFF_LOOPBACK) != 0)
return(0);
if (ifp->if_eflags & (IFEF_IPV6_ND6ALT|IFEF_LOCALNET_PRIVATE))
return (0);
switch (ifp->if_type) {
#if IFT_DUMMY
case IFT_DUMMY:
#endif
case IFT_FAITH:
return(0);
default:
if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) !=
(IFF_UP|IFF_RUNNING))
return(0);
return(1);
}
}
void
in6_setmaxmtu(void)
{
u_int32_t maxmtu = 0;
struct ifnet *ifp;
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp, &ifnet_head, if_list) {
struct nd_ifinfo *ndi;
lck_rw_lock_shared(nd_if_rwlock);
if ((ndi = ND_IFINFO(ifp)) != NULL && !ndi->initialized)
ndi = NULL;
if (ndi != NULL)
lck_mtx_lock(&ndi->lock);
if ((ifp->if_flags & IFF_LOOPBACK) == 0 &&
IN6_LINKMTU(ifp) > maxmtu)
maxmtu = IN6_LINKMTU(ifp);
if (ndi != NULL)
lck_mtx_unlock(&ndi->lock);
lck_rw_done(nd_if_rwlock);
}
ifnet_head_done();
if (maxmtu)
in6_maxmtu = maxmtu;
}
int
in6_if2idlen(struct ifnet *ifp)
{
switch (ifp->if_type) {
case IFT_ETHER:
case IFT_IEEE8023ADLAG:
#ifdef IFT_PROPVIRTUAL
case IFT_PROPVIRTUAL:
#endif
#ifdef IFT_L2VLAN
case IFT_L2VLAN:
#endif
#ifdef IFT_IEEE80211
case IFT_IEEE80211:
#endif
#ifdef IFT_MIP
case IFT_MIP:
#endif
return (64);
case IFT_FDDI:
return (64);
case IFT_ISO88025:
return (64);
case IFT_PPP:
return (64);
case IFT_ARCNET:
return (64);
case IFT_FRELAY:
return (64);
case IFT_IEEE1394:
return (64);
case IFT_GIF:
return (64);
case IFT_LOOP:
return (64);
case IFT_OTHER:
return (64);
case IFT_CELLULAR:
return (64);
case IFT_BRIDGE:
return (64);
default:
printf("in6_if2idlen: unknown link type (%d)\n", ifp->if_type);
return (64);
}
}
void
in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
{
bzero(sin, sizeof(*sin));
sin->sin_len = sizeof(struct sockaddr_in);
sin->sin_family = AF_INET;
sin->sin_port = sin6->sin6_port;
sin->sin_addr.s_addr = sin6->sin6_addr.s6_addr32[3];
}
void
in6_sin_2_v4mapsin6(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
{
bzero(sin6, sizeof(*sin6));
sin6->sin6_len = sizeof(struct sockaddr_in6);
sin6->sin6_family = AF_INET6;
sin6->sin6_port = sin->sin_port;
sin6->sin6_addr.s6_addr32[0] = 0;
sin6->sin6_addr.s6_addr32[1] = 0;
if (sin->sin_addr.s_addr) {
sin6->sin6_addr.s6_addr32[2] = IPV6_ADDR_INT32_SMP;
sin6->sin6_addr.s6_addr32[3] = sin->sin_addr.s_addr;
}
else {
sin6->sin6_addr.s6_addr32[2] = 0;
sin6->sin6_addr.s6_addr32[3] = 0;
}
}
void
in6_sin6_2_sin_in_sock(struct sockaddr *nam)
{
struct sockaddr_in *sin_p;
struct sockaddr_in6 sin6;
sin6 = *(struct sockaddr_in6 *)(void *)nam;
sin_p = (struct sockaddr_in *)(void *)nam;
in6_sin6_2_sin(sin_p, &sin6);
}
int
in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam)
{
struct sockaddr_in *sin_p;
struct sockaddr_in6 *sin6_p;
MALLOC(sin6_p, struct sockaddr_in6 *, sizeof *sin6_p, M_SONAME,
M_WAITOK);
if (sin6_p == NULL)
return ENOBUFS;
sin_p = (struct sockaddr_in *)(void *)*nam;
in6_sin_2_v4mapsin6(sin_p, sin6_p);
FREE(*nam, M_SONAME);
*nam = (struct sockaddr *)sin6_p;
return 0;
}
void
in6_post_msg(struct ifnet *ifp, u_int32_t event_code, struct in6_ifaddr *ifa)
{
struct kev_msg ev_msg;
struct kev_in6_data in6_event_data;
bzero(&in6_event_data, sizeof(struct kev_in6_data));
bzero(&ev_msg, sizeof(struct kev_msg));
ev_msg.vendor_code = KEV_VENDOR_APPLE;
ev_msg.kev_class = KEV_NETWORK_CLASS;
ev_msg.kev_subclass = KEV_INET6_SUBCLASS;
ev_msg.event_code = event_code;
IFA_LOCK(&ifa->ia_ifa);
in6_event_data.ia_addr = ifa->ia_addr;
in6_event_data.ia_net = ifa->ia_net;
in6_event_data.ia_dstaddr = ifa->ia_dstaddr;
in6_event_data.ia_prefixmask = ifa->ia_prefixmask;
in6_event_data.ia_plen = ifa->ia_plen;
in6_event_data.ia6_flags = (u_int32_t)ifa->ia6_flags;
in6_event_data.ia_lifetime.ia6t_expire =
ifa->ia6_lifetime.ia6t_expire;
in6_event_data.ia_lifetime.ia6t_preferred =
ifa->ia6_lifetime.ia6t_preferred;
in6_event_data.ia_lifetime.ia6t_vltime =
ifa->ia6_lifetime.ia6t_vltime;
in6_event_data.ia_lifetime.ia6t_pltime =
ifa->ia6_lifetime.ia6t_pltime;
IFA_UNLOCK(&ifa->ia_ifa);
if (ifp != NULL) {
(void) strncpy(&in6_event_data.link_data.if_name[0],
ifp->if_name, IFNAMSIZ);
in6_event_data.link_data.if_family = ifp->if_family;
in6_event_data.link_data.if_unit = (u_int32_t) ifp->if_unit;
}
ev_msg.dv[0].data_ptr = &in6_event_data;
ev_msg.dv[0].data_length = sizeof (in6_event_data);
ev_msg.dv[1].data_length = 0;
kev_post_msg(&ev_msg);
}
void
in6_ifaddr_init(void)
{
in6_multi_init();
PE_parse_boot_argn("ifa_debug", &in6ifa_debug, sizeof (in6ifa_debug));
in6ifa_size = (in6ifa_debug == 0) ? sizeof (struct in6_ifaddr) :
sizeof (struct in6_ifaddr_dbg);
in6ifa_zone = zinit(in6ifa_size, IN6IFA_ZONE_MAX * in6ifa_size,
0, IN6IFA_ZONE_NAME);
if (in6ifa_zone == NULL) {
panic("%s: failed allocating %s", __func__, IN6IFA_ZONE_NAME);
}
zone_change(in6ifa_zone, Z_EXPAND, TRUE);
zone_change(in6ifa_zone, Z_CALLERACCT, FALSE);
lck_mtx_init(&in6ifa_trash_lock, ifa_mtx_grp, ifa_mtx_attr);
TAILQ_INIT(&in6ifa_trash_head);
}
static struct in6_ifaddr *
in6_ifaddr_alloc(int how)
{
struct in6_ifaddr *in6ifa;
in6ifa = (how == M_WAITOK) ? zalloc(in6ifa_zone) :
zalloc_noblock(in6ifa_zone);
if (in6ifa != NULL) {
bzero(in6ifa, in6ifa_size);
in6ifa->ia_ifa.ifa_free = in6_ifaddr_free;
in6ifa->ia_ifa.ifa_debug |= IFD_ALLOC;
ifa_lock_init(&in6ifa->ia_ifa);
if (in6ifa_debug != 0) {
struct in6_ifaddr_dbg *in6ifa_dbg =
(struct in6_ifaddr_dbg *)in6ifa;
in6ifa->ia_ifa.ifa_debug |= IFD_DEBUG;
in6ifa->ia_ifa.ifa_trace = in6_ifaddr_trace;
in6ifa->ia_ifa.ifa_attached = in6_ifaddr_attached;
in6ifa->ia_ifa.ifa_detached = in6_ifaddr_detached;
ctrace_record(&in6ifa_dbg->in6ifa_alloc);
}
}
return (in6ifa);
}
static void
in6_ifaddr_free(struct ifaddr *ifa)
{
IFA_LOCK_ASSERT_HELD(ifa);
if (ifa->ifa_refcnt != 0) {
panic("%s: ifa %p bad ref cnt", __func__, ifa);
} else if (!(ifa->ifa_debug & IFD_ALLOC)) {
panic("%s: ifa %p cannot be freed", __func__, ifa);
}
if (ifa->ifa_debug & IFD_DEBUG) {
struct in6_ifaddr_dbg *in6ifa_dbg =
(struct in6_ifaddr_dbg *)ifa;
ctrace_record(&in6ifa_dbg->in6ifa_free);
bcopy(&in6ifa_dbg->in6ifa, &in6ifa_dbg->in6ifa_old,
sizeof (struct in6_ifaddr));
if (ifa->ifa_debug & IFD_TRASHED) {
IFA_CONVERT_LOCK(ifa);
lck_mtx_lock(&in6ifa_trash_lock);
TAILQ_REMOVE(&in6ifa_trash_head, in6ifa_dbg,
in6ifa_trash_link);
lck_mtx_unlock(&in6ifa_trash_lock);
ifa->ifa_debug &= ~IFD_TRASHED;
}
}
IFA_UNLOCK(ifa);
ifa_lock_destroy(ifa);
bzero(ifa, sizeof (struct in6_ifaddr));
zfree(in6ifa_zone, ifa);
}
static void
in6_ifaddr_attached(struct ifaddr *ifa)
{
struct in6_ifaddr_dbg *in6ifa_dbg = (struct in6_ifaddr_dbg *)ifa;
IFA_LOCK_ASSERT_HELD(ifa);
if (!(ifa->ifa_debug & IFD_DEBUG)) {
panic("%s: ifa %p has no debug structure", __func__, ifa);
}
if (ifa->ifa_debug & IFD_TRASHED) {
IFA_CONVERT_LOCK(ifa);
lck_mtx_lock(&in6ifa_trash_lock);
TAILQ_REMOVE(&in6ifa_trash_head, in6ifa_dbg, in6ifa_trash_link);
lck_mtx_unlock(&in6ifa_trash_lock);
ifa->ifa_debug &= ~IFD_TRASHED;
}
}
static void
in6_ifaddr_detached(struct ifaddr *ifa)
{
struct in6_ifaddr_dbg *in6ifa_dbg = (struct in6_ifaddr_dbg *)ifa;
IFA_LOCK_ASSERT_HELD(ifa);
if (!(ifa->ifa_debug & IFD_DEBUG)) {
panic("%s: ifa %p has no debug structure", __func__, ifa);
} else if (ifa->ifa_debug & IFD_TRASHED) {
panic("%s: ifa %p is already in trash list", __func__, ifa);
}
ifa->ifa_debug |= IFD_TRASHED;
IFA_CONVERT_LOCK(ifa);
lck_mtx_lock(&in6ifa_trash_lock);
TAILQ_INSERT_TAIL(&in6ifa_trash_head, in6ifa_dbg, in6ifa_trash_link);
lck_mtx_unlock(&in6ifa_trash_lock);
}
static void
in6_ifaddr_trace(struct ifaddr *ifa, int refhold)
{
struct in6_ifaddr_dbg *in6ifa_dbg = (struct in6_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);
}
if (refhold) {
cnt = &in6ifa_dbg->in6ifa_refhold_cnt;
tr = in6ifa_dbg->in6ifa_refhold;
} else {
cnt = &in6ifa_dbg->in6ifa_refrele_cnt;
tr = in6ifa_dbg->in6ifa_refrele;
}
idx = atomic_add_16_ov(cnt, 1) % IN6IFA_TRACE_HIST_SIZE;
ctrace_record(&tr[idx]);
}
static void
in6_ifaddr_set_dadprogress(struct in6_ifaddr *ia)
{
uint32_t flags = IN6_IFF_TENTATIVE;
uint32_t optdad = nd6_optimistic_dad;
if (optdad && (ia->ia_ifp->if_eflags & IFEF_IPV6_ROUTER) == 0) {
if ((optdad & ND6_OPTIMISTIC_DAD_LINKLOCAL) &&
IN6_IS_ADDR_LINKLOCAL(&ia->ia_addr.sin6_addr))
flags = IN6_IFF_OPTIMISTIC;
else if ((optdad & ND6_OPTIMISTIC_DAD_AUTOCONF) &&
(ia->ia6_flags & IN6_IFF_AUTOCONF)) {
if (ia->ia6_flags & IN6_IFF_TEMPORARY) {
if (optdad & ND6_OPTIMISTIC_DAD_TEMPORARY)
flags = IN6_IFF_OPTIMISTIC;
} else {
flags = IN6_IFF_OPTIMISTIC;
}
} else if ((optdad & ND6_OPTIMISTIC_DAD_DYNAMIC) &&
(ia->ia6_flags & IN6_IFF_DYNAMIC)) {
if (ia->ia6_flags & IN6_IFF_TEMPORARY) {
if (optdad & ND6_OPTIMISTIC_DAD_TEMPORARY)
flags = IN6_IFF_OPTIMISTIC;
} else {
flags = IN6_IFF_OPTIMISTIC;
}
}
}
ia->ia6_flags &= ~(IN6_IFF_DUPLICATED | IN6_IFF_DADPROGRESS);
ia->ia6_flags |= flags;
}