#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 <mach/boolean.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 <netinet/tcp.h>
#include <netinet/tcp_seq.h>
#include <netinet/tcp_var.h>
#include <netinet6/nd6.h>
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#include <netinet6/mld6_var.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>
#include <net/dlil.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 in6ctl_associd(struct socket *, u_long, caddr_t);
static int in6ctl_connid(struct socket *, u_long, caddr_t);
static int in6ctl_conninfo(struct socket *, u_long, caddr_t);
static int in6ctl_llstart(struct ifnet *, u_long, caddr_t);
static int in6ctl_llstop(struct ifnet *);
static int in6ctl_cgastart(struct ifnet *, u_long, caddr_t);
static int in6ctl_gifaddr(struct ifnet *, struct in6_ifaddr *, u_long,
struct in6_ifreq *);
static int in6ctl_gifstat(struct ifnet *, u_long, struct in6_ifreq *);
static int in6ctl_alifetime(struct in6_ifaddr *, u_long, struct in6_ifreq *,
boolean_t);
static int in6ctl_aifaddr(struct ifnet *, struct in6_aliasreq *);
static void in6ctl_difaddr(struct ifnet *, struct in6_ifaddr *);
static int in6_autoconf(struct ifnet *, int);
static int in6_setrouter(struct ifnet *, int);
static int in6_ifinit(struct ifnet *, struct in6_ifaddr *, int);
static int in6_ifaupdate_aux(struct in6_ifaddr *, struct ifnet *, 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);
#if defined(__LP64__)
static void in6_cgareq_32_to_64(struct in6_cgareq_32 *,
struct in6_cgareq_64 *);
#else
static void in6_cgareq_64_to_32(struct in6_cgareq_64 *,
struct in6_cgareq_32 *);
#endif
static struct in6_aliasreq *in6_aliasreq_to_native(void *, int,
struct in6_aliasreq *);
static struct in6_cgareq *in6_cgareq_to_native(void *, int,
struct in6_cgareq *);
static int in6_to_kamescope(struct sockaddr_in6 *, struct ifnet *);
static int in6_getassocids(struct socket *, uint32_t *, user_addr_t);
static int in6_getconnids(struct socket *, sae_associd_t, uint32_t *,
user_addr_t);
static int in6_getconninfo(struct socket *, sae_connid_t, uint32_t *,
uint32_t *, int32_t *, user_addr_t, socklen_t *, user_addr_t, socklen_t *,
uint32_t *, user_addr_t, uint32_t *);
static void in6_if_up_dad_start(struct ifnet *);
extern lck_mtx_t *nd6_mutex;
#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(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(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;
}
#if defined(__LP64__)
void
in6_cgareq_32_to_64(struct in6_cgareq_32 *src,
struct in6_cgareq_64 *dst)
{
bzero(dst, sizeof (*dst));
bcopy(src->cgar_name, dst->cgar_name, sizeof (dst->cgar_name));
dst->cgar_flags = src->cgar_flags;
bcopy(src->cgar_cgaprep.cga_modifier.octets,
dst->cgar_cgaprep.cga_modifier.octets,
sizeof (dst->cgar_cgaprep.cga_modifier.octets));
dst->cgar_cgaprep.cga_security_level =
src->cgar_cgaprep.cga_security_level;
dst->cgar_lifetime.ia6t_expire = src->cgar_lifetime.ia6t_expire;
dst->cgar_lifetime.ia6t_preferred = src->cgar_lifetime.ia6t_preferred;
dst->cgar_lifetime.ia6t_vltime = src->cgar_lifetime.ia6t_vltime;
dst->cgar_lifetime.ia6t_pltime = src->cgar_lifetime.ia6t_pltime;
}
#endif
#if !defined(__LP64__)
void
in6_cgareq_64_to_32(struct in6_cgareq_64 *src,
struct in6_cgareq_32 *dst)
{
bzero(dst, sizeof (*dst));
bcopy(src->cgar_name, dst->cgar_name, sizeof (dst->cgar_name));
dst->cgar_flags = src->cgar_flags;
bcopy(src->cgar_cgaprep.cga_modifier.octets,
dst->cgar_cgaprep.cga_modifier.octets,
sizeof (dst->cgar_cgaprep.cga_modifier.octets));
dst->cgar_cgaprep.cga_security_level =
src->cgar_cgaprep.cga_security_level;
dst->cgar_lifetime.ia6t_expire = src->cgar_lifetime.ia6t_expire;
dst->cgar_lifetime.ia6t_preferred = src->cgar_lifetime.ia6t_preferred;
dst->cgar_lifetime.ia6t_vltime = src->cgar_lifetime.ia6t_vltime;
dst->cgar_lifetime.ia6t_pltime = src->cgar_lifetime.ia6t_pltime;
}
#endif
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);
}
static struct in6_cgareq *
in6_cgareq_to_native(void *data, int is64, struct in6_cgareq *dst)
{
#if defined(__LP64__)
if (is64)
bcopy(data, dst, sizeof (*dst));
else
in6_cgareq_32_to_64((struct in6_cgareq_32 *)data,
(struct in6_cgareq_64 *)dst);
#else
if (is64)
in6_cgareq_64_to_32((struct in6_cgareq_64 *)data,
(struct in6_cgareq_32 *)dst);
else
bcopy(data, dst, sizeof (*dst));
#endif
return (dst);
}
static __attribute__((noinline)) int
in6ctl_associd(struct socket *so, u_long cmd, caddr_t data)
{
int error = 0;
union {
struct so_aidreq32 a32;
struct so_aidreq64 a64;
} u;
VERIFY(so != NULL);
switch (cmd) {
case SIOCGASSOCIDS32: {
bcopy(data, &u.a32, sizeof (u.a32));
error = in6_getassocids(so, &u.a32.sar_cnt, u.a32.sar_aidp);
if (error == 0)
bcopy(&u.a32, data, sizeof (u.a32));
break;
}
case SIOCGASSOCIDS64: {
bcopy(data, &u.a64, sizeof (u.a64));
error = in6_getassocids(so, &u.a64.sar_cnt, u.a64.sar_aidp);
if (error == 0)
bcopy(&u.a64, data, sizeof (u.a64));
break;
}
default:
VERIFY(0);
}
return (error);
}
static __attribute__((noinline)) int
in6ctl_connid(struct socket *so, u_long cmd, caddr_t data)
{
int error = 0;
union {
struct so_cidreq32 c32;
struct so_cidreq64 c64;
} u;
VERIFY(so != NULL);
switch (cmd) {
case SIOCGCONNIDS32: {
bcopy(data, &u.c32, sizeof (u.c32));
error = in6_getconnids(so, u.c32.scr_aid, &u.c32.scr_cnt,
u.c32.scr_cidp);
if (error == 0)
bcopy(&u.c32, data, sizeof (u.c32));
break;
}
case SIOCGCONNIDS64: {
bcopy(data, &u.c64, sizeof (u.c64));
error = in6_getconnids(so, u.c64.scr_aid, &u.c64.scr_cnt,
u.c64.scr_cidp);
if (error == 0)
bcopy(&u.c64, data, sizeof (u.c64));
break;
}
default:
VERIFY(0);
}
return (error);
}
static __attribute__((noinline)) int
in6ctl_conninfo(struct socket *so, u_long cmd, caddr_t data)
{
int error = 0;
union {
struct so_cinforeq32 ci32;
struct so_cinforeq64 ci64;
} u;
VERIFY(so != NULL);
switch (cmd) {
case SIOCGCONNINFO32: {
bcopy(data, &u.ci32, sizeof (u.ci32));
error = in6_getconninfo(so, u.ci32.scir_cid, &u.ci32.scir_flags,
&u.ci32.scir_ifindex, &u.ci32.scir_error, u.ci32.scir_src,
&u.ci32.scir_src_len, u.ci32.scir_dst, &u.ci32.scir_dst_len,
&u.ci32.scir_aux_type, u.ci32.scir_aux_data,
&u.ci32.scir_aux_len);
if (error == 0)
bcopy(&u.ci32, data, sizeof (u.ci32));
break;
}
case SIOCGCONNINFO64: {
bcopy(data, &u.ci64, sizeof (u.ci64));
error = in6_getconninfo(so, u.ci64.scir_cid, &u.ci64.scir_flags,
&u.ci64.scir_ifindex, &u.ci64.scir_error, u.ci64.scir_src,
&u.ci64.scir_src_len, u.ci64.scir_dst, &u.ci64.scir_dst_len,
&u.ci64.scir_aux_type, u.ci64.scir_aux_data,
&u.ci64.scir_aux_len);
if (error == 0)
bcopy(&u.ci64, data, sizeof (u.ci64));
break;
}
default:
VERIFY(0);
}
return (error);
}
static __attribute__((noinline)) int
in6ctl_llstart(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct in6_aliasreq sifra, *ifra = NULL;
boolean_t is64;
int error = 0;
VERIFY(ifp != NULL);
switch (cmd) {
case SIOCLL_START_32:
case SIOCLL_START_64:
is64 = (cmd == SIOCLL_START_64);
ifra = in6_aliasreq_to_native(data, is64, &sifra);
if (ifra->ifra_addr.sin6_family == AF_INET6 &&
(ifra->ifra_dstaddr.sin6_len == 0 ||
ifra->ifra_dstaddr.sin6_family == AF_INET6)) {
error = in6_ifattach_aliasreq(ifp, NULL, ifra);
} else {
error = in6_ifattach_aliasreq(ifp, NULL, NULL);
}
if (error == 0)
in6_if_up_dad_start(ifp);
break;
default:
VERIFY(0);
}
return (error);
}
static __attribute__((noinline)) int
in6ctl_llstop(struct ifnet *ifp)
{
struct in6_ifaddr *ia;
struct nd_prefix pr0, *pr;
VERIFY(ifp != NULL);
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);
bzero(&pr0, sizeof(pr0));
pr0.ndpr_plen = 64;
pr0.ndpr_ifp = ifp;
pr0.ndpr_prefix.sin6_addr.s6_addr16[0] = IPV6_ADDR_INT16_ULL;
in6_setscope(&pr0.ndpr_prefix.sin6_addr, ifp, NULL);
pr = nd6_prefix_lookup(&pr0, ND6_PREFIX_EXPIRY_UNSPEC);
if (pr) {
lck_mtx_lock(nd6_mutex);
NDPR_LOCK(pr);
prelist_remove(pr);
NDPR_UNLOCK(pr);
NDPR_REMREF(pr);
lck_mtx_unlock(nd6_mutex);
}
return (0);
}
static __attribute__((noinline)) int
in6ctl_cgastart(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct in6_cgareq llcgasr;
int is64, error = 0;
VERIFY(ifp != NULL);
switch (cmd) {
case SIOCLL_CGASTART_32:
case SIOCLL_CGASTART_64:
is64 = (cmd == SIOCLL_CGASTART_64);
in6_cgareq_to_native(data, is64, &llcgasr);
error = in6_ifattach_llcgareq(ifp, &llcgasr);
if (error == 0)
in6_if_up_dad_start(ifp);
break;
default:
VERIFY(0);
}
return (error);
}
static __attribute__((noinline)) int
in6ctl_gifaddr(struct ifnet *ifp, struct in6_ifaddr *ia, u_long cmd,
struct in6_ifreq *ifr)
{
struct sockaddr_in6 addr;
int error = 0;
VERIFY(ifp != NULL);
if (ia == NULL)
return (EADDRNOTAVAIL);
switch (cmd) {
case SIOCGIFADDR_IN6:
IFA_LOCK(&ia->ia_ifa);
bcopy(&ia->ia_addr, &addr, sizeof (addr));
IFA_UNLOCK(&ia->ia_ifa);
if ((error = sa6_recoverscope(&addr, TRUE)) != 0)
break;
bcopy(&addr, &ifr->ifr_addr, sizeof (addr));
break;
case SIOCGIFDSTADDR_IN6:
if (!(ifp->if_flags & IFF_POINTOPOINT)) {
error = EINVAL;
break;
}
IFA_LOCK(&ia->ia_ifa);
bcopy(&ia->ia_dstaddr, &addr, sizeof (addr));
IFA_UNLOCK(&ia->ia_ifa);
if ((error = sa6_recoverscope(&addr, TRUE)) != 0)
break;
bcopy(&addr, &ifr->ifr_dstaddr, sizeof (addr));
break;
default:
VERIFY(0);
}
return (error);
}
static __attribute__((noinline)) int
in6ctl_gifstat(struct ifnet *ifp, u_long cmd, struct in6_ifreq *ifr)
{
int error = 0, index;
VERIFY(ifp != NULL);
index = ifp->if_index;
switch (cmd) {
case SIOCGIFSTAT_IN6:
if (IN6_IFEXTRA(ifp) == NULL) {
bzero(&ifr->ifr_ifru.ifru_stat,
sizeof (ifr->ifr_ifru.ifru_stat));
} else {
bcopy(&IN6_IFEXTRA(ifp)->in6_ifstat,
&ifr->ifr_ifru.ifru_stat,
sizeof (ifr->ifr_ifru.ifru_stat));
}
break;
case SIOCGIFSTAT_ICMP6:
if (IN6_IFEXTRA(ifp) == NULL) {
bzero(&ifr->ifr_ifru.ifru_stat,
sizeof (ifr->ifr_ifru.ifru_icmp6stat));
} else {
bcopy(&IN6_IFEXTRA(ifp)->icmp6_ifstat,
&ifr->ifr_ifru.ifru_icmp6stat,
sizeof (ifr->ifr_ifru.ifru_icmp6stat));
}
break;
default:
VERIFY(0);
}
return (error);
}
static __attribute__((noinline)) int
in6ctl_alifetime(struct in6_ifaddr *ia, u_long cmd, struct in6_ifreq *ifr,
boolean_t p64)
{
uint64_t timenow = net_uptime();
struct in6_addrlifetime ia6_lt;
struct timeval caltime;
int error = 0;
if (ia == NULL)
return (EADDRNOTAVAIL);
switch (cmd) {
case SIOCGIFALIFETIME_IN6:
IFA_LOCK(&ia->ia_ifa);
in6ifa_getlifetime(ia, &ia6_lt, 1);
if (p64) {
struct in6_addrlifetime_64 lt;
bzero(<, sizeof (lt));
lt.ia6t_expire = ia6_lt.ia6t_expire;
lt.ia6t_preferred = ia6_lt.ia6t_preferred;
lt.ia6t_vltime = ia6_lt.ia6t_vltime;
lt.ia6t_pltime = ia6_lt.ia6t_pltime;
bcopy(<, &ifr->ifr_ifru.ifru_lifetime, sizeof (lt));
} else {
struct in6_addrlifetime_32 lt;
bzero(<, sizeof (lt));
lt.ia6t_expire = (uint32_t)ia6_lt.ia6t_expire;
lt.ia6t_preferred = (uint32_t)ia6_lt.ia6t_preferred;
lt.ia6t_vltime = (uint32_t)ia6_lt.ia6t_vltime;
lt.ia6t_pltime = (uint32_t)ia6_lt.ia6t_pltime;
bcopy(<, &ifr->ifr_ifru.ifru_lifetime, sizeof (lt));
}
IFA_UNLOCK(&ia->ia_ifa);
break;
case SIOCSIFALIFETIME_IN6:
getmicrotime(&caltime);
if (p64) {
struct in6_addrlifetime_64 lt;
bcopy(&ifr->ifr_ifru.ifru_lifetime, <, sizeof (lt));
if (lt.ia6t_vltime != ND6_INFINITE_LIFETIME &&
lt.ia6t_vltime + caltime.tv_sec < caltime.tv_sec) {
error = EINVAL;
break;
}
if (lt.ia6t_pltime != ND6_INFINITE_LIFETIME &&
lt.ia6t_pltime + caltime.tv_sec < caltime.tv_sec) {
error = EINVAL;
break;
}
} else {
struct in6_addrlifetime_32 lt;
bcopy(&ifr->ifr_ifru.ifru_lifetime, <, sizeof (lt));
if (lt.ia6t_vltime != ND6_INFINITE_LIFETIME &&
lt.ia6t_vltime + caltime.tv_sec < caltime.tv_sec) {
error = EINVAL;
break;
}
if (lt.ia6t_pltime != ND6_INFINITE_LIFETIME &&
lt.ia6t_pltime + caltime.tv_sec < caltime.tv_sec) {
error = EINVAL;
break;
}
}
IFA_LOCK(&ia->ia_ifa);
if (p64) {
struct in6_addrlifetime_64 lt;
bcopy(&ifr->ifr_ifru.ifru_lifetime, <, sizeof (lt));
ia6_lt.ia6t_expire = lt.ia6t_expire;
ia6_lt.ia6t_preferred = lt.ia6t_preferred;
ia6_lt.ia6t_vltime = lt.ia6t_vltime;
ia6_lt.ia6t_pltime = lt.ia6t_pltime;
} else {
struct in6_addrlifetime_32 lt;
bcopy(&ifr->ifr_ifru.ifru_lifetime, <, sizeof (lt));
ia6_lt.ia6t_expire = (uint32_t)lt.ia6t_expire;
ia6_lt.ia6t_preferred = (uint32_t)lt.ia6t_preferred;
ia6_lt.ia6t_vltime = lt.ia6t_vltime;
ia6_lt.ia6t_pltime = lt.ia6t_pltime;
}
if (ia6_lt.ia6t_vltime != ND6_INFINITE_LIFETIME)
ia6_lt.ia6t_expire = timenow + ia6_lt.ia6t_vltime;
else
ia6_lt.ia6t_expire = 0;
if (ia6_lt.ia6t_pltime != ND6_INFINITE_LIFETIME)
ia6_lt.ia6t_preferred = timenow + ia6_lt.ia6t_pltime;
else
ia6_lt.ia6t_preferred = 0;
in6ifa_setlifetime(ia, &ia6_lt);
IFA_UNLOCK(&ia->ia_ifa);
break;
default:
VERIFY(0);
}
return (error);
}
#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_ifreq *ifr = (struct in6_ifreq *)(void *)data;
struct in6_aliasreq sifra, *ifra = NULL;
struct in6_ifaddr *ia = NULL;
struct sockaddr_in6 sin6, *sa6 = NULL;
boolean_t privileged = (proc_suser(p) == 0);
boolean_t p64 = proc_is64bit(p);
boolean_t so_unlocked = FALSE;
int intval, error = 0;
VERIFY(so != NULL || p == kernproc);
switch (cmd) {
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));
case SIOCGASSOCIDS32:
case SIOCGASSOCIDS64:
return (in6ctl_associd(so, cmd, data));
case SIOCGCONNIDS32:
case SIOCGCONNIDS64:
return (in6ctl_connid(so, cmd, data));
case SIOCGCONNINFO32:
case SIOCGCONNINFO64:
return (in6ctl_conninfo(so, cmd, data));
}
if (ifp == NULL)
return (ENXIO);
if (so != NULL) {
socket_unlock(so, 0);
so_unlocked = TRUE;
}
switch (cmd) {
case SIOCAUTOCONF_START:
if (!privileged) {
error = EPERM;
goto done;
}
error = in6_autoconf(ifp, TRUE);
goto done;
case SIOCAUTOCONF_STOP:
if (!privileged) {
error = EPERM;
goto done;
}
error = in6_autoconf(ifp, FALSE);
goto done;
case SIOCLL_START_32:
case SIOCLL_START_64:
if (!privileged) {
error = EPERM;
goto done;
}
error = in6ctl_llstart(ifp, cmd, data);
goto done;
case SIOCLL_STOP:
if (!privileged) {
error = EPERM;
goto done;
}
error = in6ctl_llstop(ifp);
goto done;
case SIOCSETROUTERMODE_IN6:
if (!privileged) {
error = EPERM;
goto done;
}
bcopy(&((struct in6_ifreq *)(void *)data)->ifr_intval,
&intval, sizeof (intval));
error = in6_setrouter(ifp, intval);
goto done;
case SIOCPROTOATTACH_IN6_32:
case SIOCPROTOATTACH_IN6_64:
if (!privileged) {
error = EPERM;
goto done;
}
error = in6_domifattach(ifp);
goto done;
case SIOCPROTODETACH_IN6:
if (!privileged) {
error = EPERM;
goto done;
}
in6_purgeif(ifp);
if ((error = proto_unplumb(PF_INET6, ifp)))
log(LOG_ERR, "SIOCPROTODETACH_IN6: %s error=%d\n",
if_name(ifp), error);
goto done;
case SIOCSNDFLUSH_IN6:
case SIOCSPFXFLUSH_IN6:
case SIOCSRTRFLUSH_IN6:
case SIOCSDEFIFACE_IN6_32:
case SIOCSDEFIFACE_IN6_64:
case SIOCSIFINFO_FLAGS:
case SIOCGIFCGAPREP_IN6:
case SIOCSIFCGAPREP_IN6:
if (!privileged) {
error = EPERM;
goto done;
}
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:
error = nd6_ioctl(cmd, data, ifp);
goto done;
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");
error = EOPNOTSUPP;
goto done;
case SIOCSSCOPE6:
case SIOCGSCOPE6:
case SIOCGSCOPE6DEF:
error = EOPNOTSUPP;
goto done;
case SIOCLL_CGASTART_32:
case SIOCLL_CGASTART_64:
if (!privileged)
error = EPERM;
else
error = in6ctl_cgastart(ifp, cmd, data);
goto done;
case SIOCGIFSTAT_IN6:
case SIOCGIFSTAT_ICMP6:
error = in6ctl_gifstat(ifp, cmd, ifr);
goto done;
}
switch (cmd) {
case SIOCSIFADDR_IN6:
case SIOCSIFDSTADDR_IN6:
case SIOCSIFNETMASK_IN6:
error = EOPNOTSUPP;
goto done;
case SIOCAIFADDR_IN6_32:
case SIOCAIFADDR_IN6_64:
if (!privileged) {
error = EPERM;
goto done;
}
ifra = in6_aliasreq_to_native(data,
(cmd == SIOCAIFADDR_IN6_64), &sifra);
bcopy(&ifra->ifra_addr, &sin6, sizeof (sin6));
sa6 = &sin6;
break;
case SIOCDIFADDR_IN6:
case SIOCSIFALIFETIME_IN6:
if (!privileged) {
error = EPERM;
goto done;
}
case SIOCGIFADDR_IN6:
case SIOCGIFDSTADDR_IN6:
case SIOCGIFNETMASK_IN6:
case SIOCGIFAFLAG_IN6:
case SIOCGIFALIFETIME_IN6:
bcopy(&ifr->ifr_addr, &sin6, sizeof (sin6));
sa6 = &sin6;
break;
}
VERIFY(ia == NULL);
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)) {
error = EINVAL;
goto done;
}
if (sa6->sin6_scope_id) {
if (sa6->sin6_scope_id !=
(u_int32_t)ifp->if_index) {
error = EINVAL;
goto done;
}
sa6->sin6_scope_id = 0;
}
}
ia = in6ifa_ifpwithaddr(ifp, &sa6->sin6_addr);
}
switch (cmd) {
case SIOCDIFADDR_IN6:
if (ia == NULL) {
error = EADDRNOTAVAIL;
goto done;
}
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 done;
}
break;
}
switch (cmd) {
case SIOCGIFADDR_IN6:
case SIOCGIFDSTADDR_IN6:
error = in6ctl_gifaddr(ifp, ia, cmd, ifr);
break;
case SIOCGIFNETMASK_IN6:
if (ia != NULL) {
IFA_LOCK(&ia->ia_ifa);
bcopy(&ia->ia_prefixmask, &ifr->ifr_addr,
sizeof (struct sockaddr_in6));
IFA_UNLOCK(&ia->ia_ifa);
} else {
error = EADDRNOTAVAIL;
}
break;
case SIOCGIFAFLAG_IN6:
if (ia != NULL) {
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);
} else {
error = EADDRNOTAVAIL;
}
break;
case SIOCGIFALIFETIME_IN6:
case SIOCSIFALIFETIME_IN6:
error = in6ctl_alifetime(ia, cmd, ifr, p64);
break;
case SIOCAIFADDR_IN6_32:
case SIOCAIFADDR_IN6_64:
error = in6ctl_aifaddr(ifp, ifra);
break;
case SIOCDIFADDR_IN6:
in6ctl_difaddr(ifp, ia);
break;
default:
error = ifnet_ioctl(ifp, PF_INET6, cmd, data);
break;
}
done:
if (ia != NULL)
IFA_REMREF(&ia->ia_ifa);
if (so_unlocked)
socket_lock(so, 0);
return (error);
}
static __attribute__((noinline)) int
in6ctl_aifaddr(struct ifnet *ifp, struct in6_aliasreq *ifra)
{
int i, error, addtmp, plen;
struct nd_prefix pr0, *pr;
struct in6_ifaddr *ia;
VERIFY(ifp != NULL && ifra != NULL);
ia = NULL;
error = in6_domifattach(ifp);
if (error == 0) {
error = in6_ifattach_aliasreq(ifp, NULL, NULL);
if (error != 0)
goto done;
in6_if_up_dad_start(ifp);
} else if (error != EEXIST) {
goto done;
}
error = in6_update_ifa(ifp, ifra, 0, &ia);
if (error != 0)
goto done;
VERIFY(ia != NULL);
plen = in6_mask2len(&ifra->ifra_prefixmask.sin6_addr, NULL);
if (plen == 128)
goto done;
bzero(&pr0, sizeof (pr0));
pr0.ndpr_plen = plen;
pr0.ndpr_ifp = ifp;
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);
pr0.ndpr_vltime = ifra->ifra_lifetime.ia6t_vltime;
pr0.ndpr_pltime = ifra->ifra_lifetime.ia6t_pltime;
pr0.ndpr_stateflags |= NDPRF_STATIC;
lck_mtx_init(&pr0.ndpr_lock, ifa_mtx_grp, ifa_mtx_attr);
if ((pr = nd6_prefix_lookup(&pr0, ND6_PREFIX_EXPIRY_NEVER)) == NULL) {
error = nd6_prelist_add(&pr0, NULL, &pr, FALSE);
if (error != 0)
goto done;
if (pr == NULL) {
log(LOG_ERR, "%s: nd6_prelist_add okay, but"
" no prefix.\n", __func__);
error = EINVAL;
goto done;
}
}
IFA_LOCK(&ia->ia_ifa);
addtmp = FALSE;
if (ia->ia6_ndpr == NULL) {
NDPR_LOCK(pr);
++pr->ndpr_addrcnt;
VERIFY(pr->ndpr_addrcnt != 0);
ia->ia6_ndpr = pr;
NDPR_ADDREF_LOCKED(pr);
if ((ia->ia6_flags & IN6_IFF_AUTOCONF) != 0 &&
ip6_use_tempaddr &&
pr->ndpr_addrcnt == 1) {
addtmp = true;
}
NDPR_UNLOCK(pr);
}
IFA_UNLOCK(&ia->ia_ifa);
if (addtmp) {
int e;
e = in6_tmpifadd(ia, 1);
if (e != 0)
log(LOG_NOTICE, "%s: failed to create a"
" temporary address, error=%d\n",
__func__, e);
}
lck_mtx_lock(nd6_mutex);
pfxlist_onlink_check();
lck_mtx_unlock(nd6_mutex);
NDPR_REMREF(pr);
done:
if (ia != NULL)
IFA_REMREF(&ia->ia_ifa);
return (error);
}
static __attribute__((noinline)) void
in6ctl_difaddr(struct ifnet *ifp, struct in6_ifaddr *ia)
{
int i = 0;
struct nd_prefix pr0, *pr;
VERIFY(ifp != NULL && ia != NULL);
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, ND6_PREFIX_EXPIRY_UNSPEC)) != NULL) {
IFA_LOCK(&ia->ia_ifa);
NDPR_LOCK(pr);
if (pr->ndpr_addrcnt == 1) {
pr->ndpr_expire = 1;
}
NDPR_UNLOCK(pr);
IFA_UNLOCK(&ia->ia_ifa);
NDPR_REMREF(pr);
}
purgeaddr:
in6_purgeaddr(&ia->ia_ifa);
}
static __attribute__((noinline)) int
in6_autoconf(struct ifnet *ifp, int enable)
{
int error = 0;
VERIFY(ifp != NULL);
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 __attribute__((noinline)) int
in6_setrouter(struct ifnet *ifp, int enable)
{
VERIFY(ifp != NULL);
if (ifp->if_flags & IFF_LOOPBACK)
return (ENODEV);
if (enable) {
struct nd_ifinfo *ndi = NULL;
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);
(void) nd6_if_prproxy(ifp, FALSE);
} else {
lck_mtx_unlock(&ndi->lock);
}
}
}
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));
}
static int
in6_to_kamescope(struct sockaddr_in6 *sin6, struct ifnet *ifp)
{
struct sockaddr_in6 tmp;
int error, id;
VERIFY(sin6 != NULL);
tmp = *sin6;
error = in6_recoverscope(&tmp, &sin6->sin6_addr, ifp);
if (error != 0)
return (error);
id = in6_addr2scopeid(ifp, &tmp.sin6_addr);
if (tmp.sin6_scope_id == 0)
tmp.sin6_scope_id = id;
else if (tmp.sin6_scope_id != id)
return (EINVAL);
error = in6_embedscope(&tmp.sin6_addr, &tmp, NULL, NULL, NULL);
if (error != 0)
return (error);
tmp.sin6_scope_id = 0;
*sin6 = tmp;
return (0);
}
#define IN6_IFF_CLR_ADDR_FLAG_MASK (~(IN6_IFF_DEPRECATED | IN6_IFF_DETACHED | IN6_IFF_DUPLICATED))
static int
in6_ifaupdate_aux(struct in6_ifaddr *ia, struct ifnet *ifp, int ifaupflags)
{
struct sockaddr_in6 mltaddr, mltmask;
struct in6_addr llsol;
struct ifaddr *ifa;
struct in6_multi *in6m_sol;
struct in6_multi_mship *imm;
struct rtentry *rt;
int delay, error = 0;
VERIFY(ifp != NULL && ia != NULL);
ifa = &ia->ia_ifa;
in6m_sol = NULL;
nd6log2((LOG_DEBUG, "%s - %s ifp %s ia6_flags 0x%x ifaupflags 0x%x\n",
__func__,
ip6_sprintf(&ia->ia_addr.sin6_addr),
if_name(ia->ia_ifp),
ia->ia6_flags,
ifaupflags));
ia->ia6_flags &= IN6_IFF_CLR_ADDR_FLAG_MASK;
if (in6if_do_dad(ifp)) {
in6_ifaddr_set_dadprogress(ia);
if (ia->ia6_flags & IN6_IFF_OPTIMISTIC)
ifaupflags &= ~IN6_IFAUPDATE_DADDELAY;
else
ifaupflags |= IN6_IFAUPDATE_DADDELAY;
} else {
ia->ia6_flags &= ~IN6_IFF_DADPROGRESS;
}
if ((ifp->if_flags & IFF_MULTICAST) != 0) {
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] = ia->ia_addr.sin6_addr.s6_addr32[3];
llsol.s6_addr8[12] = 0xff;
if ((error = in6_setscope(&llsol, ifp, NULL)) != 0) {
log(LOG_ERR, "%s: in6_setscope failed\n", __func__);
goto unwind;
}
delay = 0;
if ((ifaupflags & IN6_IFAUPDATE_DADDELAY)) {
delay = random() % MAX_RTR_SOLICITATION_DELAY;
}
imm = in6_joingroup(ifp, &llsol, &error, delay);
if (imm == NULL) {
nd6log((LOG_WARNING,
"%s: addmulti failed for %s on %s (errno=%d)\n",
__func__, ip6_sprintf(&llsol), if_name(ifp),
error));
VERIFY(error != 0);
goto unwind;
}
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 unwind;
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 unwind;
} else {
rtfree(rt);
}
imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error, 0);
if (!imm) {
nd6log((LOG_WARNING,
"%s: addmulti failed for %s on %s (errno=%d)\n",
__func__, ip6_sprintf(&mltaddr.sin6_addr),
if_name(ifp), error));
VERIFY(error != 0);
goto unwind;
}
IFA_LOCK_SPIN(ifa);
LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
IFA_UNLOCK(ifa);
#define hostnamelen strlen(hostname)
delay = 0;
if ((ifaupflags & IN6_IFAUPDATE_DADDELAY)) {
delay = random() % MAX_RTR_SOLICITATION_DELAY;
}
if (in6_nigroup(ifp, hostname, hostnamelen, &mltaddr.sin6_addr)
== 0) {
imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error,
delay);
if (!imm) {
nd6log((LOG_WARNING,
"%s: addmulti failed for %s on %s "
"(errno=%d)\n",
__func__, ip6_sprintf(&mltaddr.sin6_addr),
if_name(ifp), error));
error = 0;
} 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 unwind;
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 unwind;
} else
rtfree(rt);
imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error, 0);
if (!imm) {
nd6log((LOG_WARNING,
"%s: addmulti failed for %s on %s (errno=%d)\n",
__func__, ip6_sprintf(&mltaddr.sin6_addr),
if_name(ifp), error));
VERIFY(error != 0);
goto unwind;
}
IFA_LOCK(ifa);
LIST_INSERT_HEAD(&ia->ia6_memberships, imm, i6mm_chain);
IFA_UNLOCK(ifa);
}
#undef MLTMASK_LEN
++nd6_sched_timeout_want;
IFA_LOCK_SPIN(ifa);
if (in6if_do_dad(ifp) && ((ifa->ifa_flags & IN6_IFF_NODAD) == 0) &&
(ia->ia6_flags & IN6_IFF_DADPROGRESS)) {
int mindelay, maxdelay;
int *delayptr, delayval;
IFA_UNLOCK(ifa);
delayptr = NULL;
if ((ifaupflags & IN6_IFAUPDATE_DADDELAY) &&
!(ia->ia6_flags & IN6_IFF_SWIFTDAD)) {
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);
}
goto done;
unwind:
VERIFY(error != 0);
in6_purgeaddr(&ia->ia_ifa);
done:
if (in6m_sol != NULL)
IN6M_REMREF(in6m_sol);
return (error);
}
int
in6_update_ifa(struct ifnet *ifp, struct in6_aliasreq *ifra, int ifaupflags,
struct in6_ifaddr **iar)
{
struct in6_addrlifetime ia6_lt;
struct in6_ifaddr *ia;
struct ifaddr *ifa;
struct ifaddr *xifa;
struct in6_addrlifetime *lt;
uint64_t timenow;
int plen, error;
VERIFY(ifp != NULL && ifra != NULL && iar != NULL);
ia = NULL;
ifa = NULL;
error = 0;
if (ifra->ifra_addr.sin6_family != AF_INET6 ||
ifra->ifra_addr.sin6_len != sizeof (struct sockaddr_in6)) {
error = EAFNOSUPPORT;
goto unwind;
}
if (ifra->ifra_prefixmask.sin6_len == 0 ||
ifra->ifra_prefixmask.sin6_len > sizeof (struct sockaddr_in6)) {
error = EINVAL;
goto unwind;
}
plen = in6_mask2len(&ifra->ifra_prefixmask.sin6_addr,
(u_char *)&ifra->ifra_prefixmask + ifra->ifra_prefixmask.sin6_len);
if (plen <= 0) {
error = EINVAL;
goto unwind;
}
lt = &ifra->ifra_lifetime;
if (lt->ia6t_pltime > lt->ia6t_vltime) {
log(LOG_INFO,
"%s: pltime 0x%x > vltime 0x%x for %s\n", __func__,
lt->ia6t_pltime, lt->ia6t_vltime,
ip6_sprintf(&ifra->ifra_addr.sin6_addr));
error = EINVAL;
goto unwind;
}
if (lt->ia6t_vltime == 0) {
log(LOG_INFO, "%s: valid lifetime is 0 for %s\n", __func__,
ip6_sprintf(&ifra->ifra_addr.sin6_addr));
}
ia = in6ifa_ifpwithaddr(ifp, &ifra->ifra_addr.sin6_addr);
if (ia != NULL)
ifa = &ia->ia_ifa;
if ((ifp->if_flags & (IFF_LOOPBACK|IFF_POINTOPOINT)) != 0) {
switch (ifra->ifra_dstaddr.sin6_family) {
case AF_INET6:
if (plen != 128) {
log(LOG_INFO,
"%s: prefix length < 128 with"
" explicit dstaddr.\n", __func__);
error = EINVAL;
goto unwind;
}
break;
case AF_UNSPEC:
break;
default:
error = EAFNOSUPPORT;
goto unwind;
}
} else if (ifra->ifra_dstaddr.sin6_family != AF_UNSPEC) {
log(LOG_INFO,
"%s: dstaddr valid only on p2p and loopback interfaces.\n",
__func__);
error = EINVAL;
goto unwind;
}
timenow = net_uptime();
if (ia == NULL) {
int how;
ifaupflags |= IN6_IFAUPDATE_NEWADDR;
how = !(ifaupflags & IN6_IFAUPDATE_NOWAIT) ? M_WAITOK : 0;
ia = in6_ifaddr_alloc(how);
if (ia == NULL) {
error = ENOBUFS;
goto unwind;
}
ifa = &ia->ia_ifa;
IFA_ADDREF(ifa);
ifa->ifa_addr = (struct sockaddr *)&ia->ia_addr;
if (ifra->ifra_dstaddr.sin6_family == AF_INET6 ||
(ifp->if_flags & (IFF_POINTOPOINT | IFF_LOOPBACK)) != 0)
ifa->ifa_dstaddr = (struct sockaddr *)&ia->ia_dstaddr;
ifa->ifa_netmask = (struct sockaddr *)&ia->ia_prefixmask;
ifa->ifa_ifp = ifp;
ifa->ifa_metric = ifp->if_metric;
ifa->ifa_rtrequest = nd6_rtrequest;
LIST_INIT(&ia->ia6_memberships);
ia->ia_addr.sin6_family = AF_INET6;
ia->ia_addr.sin6_len = sizeof (ia->ia_addr);
ia->ia_addr.sin6_addr = ifra->ifra_addr.sin6_addr;
ia->ia_prefixmask.sin6_family = AF_INET6;
ia->ia_prefixmask.sin6_len = sizeof (ia->ia_prefixmask);
ia->ia_prefixmask.sin6_addr = ifra->ifra_prefixmask.sin6_addr;
error = in6_to_kamescope(&ia->ia_addr, ifp);
if (error != 0)
goto unwind;
if (ifa->ifa_dstaddr != NULL) {
ia->ia_dstaddr = ifra->ifra_dstaddr;
error = in6_to_kamescope(&ia->ia_dstaddr, ifp);
if (error != 0)
goto unwind;
}
ifnet_lock_exclusive(ifp);
ifaupflags |= IN6_IFAUPDATE_1STADDR;
TAILQ_FOREACH(xifa, &ifp->if_addrlist, ifa_list) {
IFA_LOCK_SPIN(xifa);
if (xifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(xifa);
ifaupflags &= ~IN6_IFAUPDATE_1STADDR;
break;
}
IFA_UNLOCK(xifa);
}
IFA_LOCK_SPIN(ifa);
if_attach_ifa(ifp, ifa);
IFA_UNLOCK(ifa);
ifnet_lock_done(ifp);
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
if (in6_ifaddrs != NULL) {
struct in6_ifaddr *iac;
for (iac = in6_ifaddrs; iac->ia_next != NULL;
iac = iac->ia_next)
continue;
iac->ia_next = ia;
} else {
in6_ifaddrs = ia;
}
IFA_ADDREF(ifa);
lck_rw_done(&in6_ifaddr_rwlock);
} else {
ifa = &ia->ia_ifa;
ifaupflags &= ~(IN6_IFAUPDATE_NEWADDR|IN6_IFAUPDATE_1STADDR);
}
VERIFY(ia != NULL && ifa == &ia->ia_ifa);
IFA_LOCK(ifa);
ia->ia6_updatetime = ia->ia6_createtime = timenow;
ia6_lt = *lt;
if (ia6_lt.ia6t_vltime != ND6_INFINITE_LIFETIME)
ia6_lt.ia6t_expire = timenow + ia6_lt.ia6t_vltime;
else
ia6_lt.ia6t_expire = 0;
if (ia6_lt.ia6t_pltime != ND6_INFINITE_LIFETIME)
ia6_lt.ia6t_preferred = timenow + ia6_lt.ia6t_pltime;
else
ia6_lt.ia6t_preferred = 0;
in6ifa_setlifetime(ia, &ia6_lt);
if ((ia->ia6_flags & IN6_IFF_DEPRECATED) != 0) {
ia->ia6_lifetime.ia6ti_pltime = 0;
ia->ia6_lifetime.ia6ti_preferred = timenow;
}
ia->ia_plen = plen;
ia->ia6_flags = ifra->ifra_flags;
IFA_UNLOCK(ifa);
error = in6_ifinit(ifp, ia, ifaupflags);
if (error != 0)
goto unwind;
error = in6_ifaupdate_aux(ia, ifp, ifaupflags);
if (error != 0)
goto unwind;
VERIFY(error == 0);
(void) ifnet_notify_address(ifp, AF_INET6);
goto done;
unwind:
VERIFY(error != 0);
if (ia != NULL) {
VERIFY(ifa == &ia->ia_ifa);
IFA_REMREF(ifa);
ia = NULL;
}
done:
*iar = ia;
return (error);
}
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) && ia->ia_plen == 128) {
int error, rtf;
IFA_UNLOCK(ifa);
rtf = (ia->ia_dstaddr.sin6_family == AF_INET6) ? RTF_HOST : 0;
error = rtinit(&(ia->ia_ifa), RTM_DELETE, rtf);
if (error != 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),
error);
}
IFA_LOCK_SPIN(ifa);
ia->ia_flags &= ~IFA_ROUTE;
}
IFA_UNLOCK(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, NULL);
(void) ifnet_notify_address(ifp, AF_INET6);
}
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 {
log(LOG_NOTICE, "%s: search failed.\n", __func__);
unlinked = 0;
}
}
ifa = &oia->ia_ifa;
IFA_LOCK(ifa);
if (!IN6_IS_ADDR_LINKLOCAL(&oia->ia_addr.sin6_addr)) {
if (oia->ia6_ndpr == NULL)
log(LOG_NOTICE, "in6_unlink_ifa: IPv6 address "
"0x%llx has no prefix\n",
(uint64_t)VM_KERNEL_ADDRPERM(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);
if ((oia->ia6_flags & IN6_IFF_AUTOCONF) != 0) {
lck_mtx_lock(nd6_mutex);
pfxlist_onlink_check();
lck_mtx_unlock(nd6_mutex);
}
if (unlinked)
IFA_REMREF(ifa);
IFA_REMREF(ifa);
routegenid_inet6_update();
}
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_ifinit(struct ifnet *ifp, struct in6_ifaddr *ia, int ifaupflags)
{
int error;
struct ifaddr *ifa;
error = 0;
ifa = &ia->ia_ifa;
if ((ifaupflags & IN6_IFAUPDATE_1STADDR) != 0) {
error = ifnet_ioctl(ifp, PF_INET6, SIOCSIFADDR, ia);
if (error != 0) {
if (error != EOPNOTSUPP)
return (error);
error = 0;
}
}
IFA_LOCK(ifa);
if (!(ia->ia_flags & IFA_ROUTE) && ia->ia_plen == 128 &&
ia->ia_dstaddr.sin6_family == AF_INET6) {
IFA_UNLOCK(ifa);
error = rtinit(ifa, RTM_ADD, RTF_UP | RTF_HOST);
if (error != 0)
return (error);
IFA_LOCK(ifa);
ia->ia_flags |= IFA_ROUTE;
}
IFA_LOCK_ASSERT_HELD(ifa);
if (ia->ia_plen < 128) {
ia->ia_flags |= RTF_CLONING;
}
IFA_UNLOCK(ifa);
if ((ifaupflags & IN6_IFAUPDATE_NEWADDR) != 0)
in6_ifaddloop(ifa);
routegenid_inet6_update();
VERIFY(error == 0);
return (0);
}
void
in6_purgeaddrs(struct ifnet *ifp)
{
in6_purgeif(ifp);
}
struct in6_ifaddr *
in6ifa_ifpforlinklocal(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(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);
}
void
in6ifa_getlifetime(struct in6_ifaddr *ia6, struct in6_addrlifetime *t_dst,
int iscalendar)
{
struct in6_addrlifetime_i *t_src = &ia6->ia6_lifetime;
struct timeval caltime;
t_dst->ia6t_vltime = t_src->ia6ti_vltime;
t_dst->ia6t_pltime = t_src->ia6ti_pltime;
t_dst->ia6t_expire = 0;
t_dst->ia6t_preferred = 0;
getmicrotime(&caltime);
t_src->ia6ti_base_calendartime +=
NET_CALCULATE_CLOCKSKEW(caltime,
t_src->ia6ti_base_calendartime, net_uptime(),
t_src->ia6ti_base_uptime);
if (iscalendar) {
if (t_src->ia6ti_expire != 0 &&
t_src->ia6ti_vltime != ND6_INFINITE_LIFETIME)
t_dst->ia6t_expire = t_src->ia6ti_base_calendartime +
t_src->ia6ti_expire - t_src->ia6ti_base_uptime;
if (t_src->ia6ti_preferred != 0 &&
t_src->ia6ti_pltime != ND6_INFINITE_LIFETIME)
t_dst->ia6t_preferred = t_src->ia6ti_base_calendartime +
t_src->ia6ti_preferred - t_src->ia6ti_base_uptime;
} else {
if (t_src->ia6ti_expire != 0 &&
t_src->ia6ti_vltime != ND6_INFINITE_LIFETIME)
t_dst->ia6t_expire = t_src->ia6ti_expire;
if (t_src->ia6ti_preferred != 0 &&
t_src->ia6ti_pltime != ND6_INFINITE_LIFETIME)
t_dst->ia6t_preferred = t_src->ia6ti_preferred;
}
}
void
in6ifa_setlifetime(struct in6_ifaddr *ia6, struct in6_addrlifetime *t_src)
{
struct in6_addrlifetime_i *t_dst = &ia6->ia6_lifetime;
struct timeval caltime;
getmicrotime(&caltime);
t_dst->ia6ti_base_calendartime +=
NET_CALCULATE_CLOCKSKEW(caltime,
t_dst->ia6ti_base_calendartime, net_uptime(),
t_dst->ia6ti_base_uptime);
t_dst->ia6ti_expire = t_src->ia6t_expire;
t_dst->ia6ti_preferred = t_src->ia6t_preferred;
t_dst->ia6ti_vltime = t_src->ia6t_vltime;
t_dst->ia6ti_pltime = t_src->ia6t_pltime;
}
char *
ip6_sprintf(const struct in6_addr *addr)
{
static const char digits[] = "0123456789abcdef";
static int ip6round = 0;
static char ip6buf[8][48];
int i;
char *cp;
const u_short *a = (const u_short *)addr;
const u_char *d;
u_char n;
int dcolon = 0;
int zpad = 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;
zpad = 0;
if ((n = *d >> 4) != 0) {
*cp++ = digits[n];
zpad = 1;
}
if ((n = *d++ & 0xf) != 0 || zpad) {
*cp++ = digits[n];
zpad = 1;
}
if ((n = *d >> 4) != 0 || zpad) {
*cp++ = digits[n];
zpad = 1;
}
if ((n = *d & 0xf) != 0 || zpad)
*cp++ = digits[n];
*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_matchlen(struct in6_addr *src, struct in6_addr *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(struct in6_addr *p1, struct in6_addr *p2, int len)
{
int bytelen, bitlen;
if (0 > len || len > 128) {
log(LOG_ERR, "%s: invalid prefix length(%d)\n", __func__, 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(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, "%s: invalid prefix length(%d)\n", __func__, 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);
}
static void
in6_if_up_dad_start(struct ifnet *ifp)
{
struct ifaddr *ifa;
struct nd_ifinfo *ndi = NULL;
ndi = ND_IFINFO(ifp);
VERIFY((NULL != ndi) && (TRUE == ndi->initialized));
if (!(ndi->flags & ND6_IFF_DAD))
return;
ifnet_lock_exclusive(ifp);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
struct in6_ifaddr *ia6;
IFA_LOCK_SPIN(ifa);
if (ifa->ifa_addr->sa_family != AF_INET6) {
IFA_UNLOCK(ifa);
continue;
}
ia6 = (struct in6_ifaddr *)ifa;
if (ia6->ia6_flags & IN6_IFF_DADPROGRESS) {
int delay = 0;
IFA_UNLOCK(ifa);
nd6_dad_start(ifa, &delay);
} else {
IFA_UNLOCK(ifa);
}
}
ifnet_lock_done(ifp);
}
int
in6if_do_dad(
struct ifnet *ifp)
{
struct nd_ifinfo *ndi = NULL;
if ((ifp->if_flags & IFF_LOOPBACK) != 0)
return (0);
ndi = ND_IFINFO(ifp);
VERIFY((NULL != ndi) && (TRUE == ndi->initialized));
if (!(ndi->flags & ND6_IFF_DAD))
return (0);
if (ifp->if_eflags &
(IFEF_IPV6_ND6ALT|IFEF_LOCALNET_PRIVATE|IFEF_DIRECTLINK))
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 = NULL;
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);
}
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:
log(LOG_NOTICE, "%s: unknown link type (%d)\n", __func__,
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,
uint8_t *mac)
{
struct kev_msg ev_msg;
struct kev_in6_data in6_event_data;
struct in6_addrlifetime ia6_lt;
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;
in6ifa_getlifetime(ifa, &ia6_lt, 1);
in6_event_data.ia_lifetime.ia6t_expire = ia6_lt.ia6t_expire;
in6_event_data.ia_lifetime.ia6t_preferred = ia6_lt.ia6t_preferred;
in6_event_data.ia_lifetime.ia6t_vltime = ia6_lt.ia6t_vltime;
in6_event_data.ia_lifetime.ia6t_pltime = ia6_lt.ia6t_pltime;
IFA_UNLOCK(&ifa->ia_ifa);
if (ifp != NULL) {
(void) strlcpy(&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;
}
if (mac != NULL)
memcpy(&in6_event_data.ia_mac, mac,
sizeof(in6_event_data.ia_mac));
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;
dlil_post_complete_msg(NULL, &ev_msg);
}
void
in6_ifaddr_init(void)
{
in6_cga_init();
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 int
in6_getassocids(struct socket *so, uint32_t *cnt, user_addr_t aidp)
{
struct in6pcb *in6p = sotoin6pcb(so);
sae_associd_t aid;
if (in6p == NULL || in6p->inp_state == INPCB_STATE_DEAD)
return (EINVAL);
aid = SAE_ASSOCID_ANY;
*cnt = 0;
if (aidp == USER_ADDR_NULL)
return (0);
return (copyout(&aid, aidp, sizeof (aid)));
}
static int
in6_getconnids(struct socket *so, sae_associd_t aid, uint32_t *cnt,
user_addr_t cidp)
{
struct in6pcb *in6p = sotoin6pcb(so);
sae_connid_t cid;
if (in6p == NULL || in6p->inp_state == INPCB_STATE_DEAD)
return (EINVAL);
if (aid != SAE_ASSOCID_ANY && aid != SAE_ASSOCID_ALL)
return (EINVAL);
*cnt = ((so->so_state & SS_ISCONNECTED) ? 1 : 0);
if (cidp == USER_ADDR_NULL)
return (0);
cid = ((*cnt != 0) ? 1 : SAE_CONNID_ANY);
return (copyout(&cid, cidp, sizeof (cid)));
}
static int
in6_getconninfo(struct socket *so, sae_connid_t cid, uint32_t *flags,
uint32_t *ifindex, int32_t *soerror, user_addr_t src, socklen_t *src_len,
user_addr_t dst, socklen_t *dst_len, uint32_t *aux_type,
user_addr_t aux_data, uint32_t *aux_len)
{
#pragma unused(aux_data)
struct in6pcb *in6p = sotoin6pcb(so);
struct sockaddr_in6 sin6;
struct ifnet *ifp = NULL;
int error = 0;
u_int32_t copy_len = 0;
if (in6p == NULL) {
error = EINVAL;
goto out;
}
if (cid != SAE_CONNID_ANY && cid != SAE_CONNID_ALL && cid != 1) {
error = EINVAL;
goto out;
}
ifp = in6p->in6p_last_outifp;
*ifindex = ((ifp != NULL) ? ifp->if_index : 0);
*soerror = so->so_error;
*flags = 0;
if (so->so_state & SS_ISCONNECTED)
*flags |= (CIF_CONNECTED | CIF_PREFERRED);
if (in6p->in6p_flags & INP_BOUND_IF)
*flags |= CIF_BOUND_IF;
if (!(in6p->in6p_flags & INP_IN6ADDR_ANY))
*flags |= CIF_BOUND_IP;
if (!(in6p->in6p_flags & INP_ANONPORT))
*flags |= CIF_BOUND_PORT;
bzero(&sin6, sizeof (sin6));
sin6.sin6_len = sizeof (sin6);
sin6.sin6_family = AF_INET6;
sin6.sin6_port = in6p->in6p_lport;
in6_recoverscope(&sin6, &in6p->in6p_laddr, NULL);
if (*src_len == 0) {
*src_len = sin6.sin6_len;
} else {
if (src != USER_ADDR_NULL) {
copy_len = min(*src_len, sizeof (sin6));
error = copyout(&sin6, src, copy_len);
if (error != 0)
goto out;
*src_len = copy_len;
}
}
sin6.sin6_port = in6p->in6p_fport;
in6_recoverscope(&sin6, &in6p->in6p_faddr, NULL);
if (*dst_len == 0) {
*dst_len = sin6.sin6_len;
} else {
if (dst != USER_ADDR_NULL) {
copy_len = min(*dst_len, sizeof (sin6));
error = copyout(&sin6, dst, copy_len);
if (error != 0)
goto out;
*dst_len = copy_len;
}
}
*aux_type = 0;
*aux_len = 0;
if (SOCK_PROTO(so) == IPPROTO_TCP) {
struct conninfo_tcp tcp_ci;
*aux_type = CIAUX_TCP;
if (*aux_len == 0) {
*aux_len = sizeof (tcp_ci);
} else {
if (aux_data != USER_ADDR_NULL) {
copy_len = min(*aux_len, sizeof (tcp_ci));
bzero(&tcp_ci, sizeof (tcp_ci));
tcp_getconninfo(so, &tcp_ci);
error = copyout(&tcp_ci, aux_data, copy_len);
if (error != 0)
goto out;
*aux_len = copy_len;
}
}
}
out:
return (error);
}
static __attribute__((unused)) void
in6ioctl_cassert(void)
{
switch ((u_long)0) {
case 0:
case SIOCAADDRCTL_POLICY:
case SIOCDADDRCTL_POLICY:
case SIOCDRADD_IN6_32:
case SIOCDRADD_IN6_64:
case SIOCDRDEL_IN6_32:
case SIOCDRDEL_IN6_64:
;
}
}