#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 <sys/sysctl.h>
#include <kern/locks.h>
#include <kern/zalloc.h>
#include <kern/clock.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 <net/nwk_wq.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>
#include <net/if_llatbl.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 in6addr_multicast_prefix =
IN6ADDR_MULTICAST_PREFIX;
const struct in6_addr in6mask0 = IN6MASK0;
const struct in6_addr in6mask7 = IN6MASK7;
const struct in6_addr in6mask8 = IN6MASK8;
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 = {
.sin6_len = sizeof(sa6_any),
.sin6_family = AF_INET6,
.sin6_port = 0,
.sin6_flowinfo = 0,
.sin6_addr = IN6ADDR_ANY_INIT,
.sin6_scope_id = 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 *, ipv6_router_mode_t);
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(zalloc_flags_t);
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(const struct in6_cgareq_32 *,
struct in6_cgareq_64 *);
#else
static void in6_cgareq_64_to_32(const struct in6_cgareq_64 *,
struct in6_cgareq_32 *);
#endif
static struct in6_aliasreq *in6_aliasreq_to_native(void *, int,
struct in6_aliasreq *);
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 void in6_if_up_dad_start(struct ifnet *);
#define IA6_HASH_INIT(ia) { \
(ia)->ia6_hash.tqe_next = (void *)(uintptr_t)-1; \
(ia)->ia6_hash.tqe_prev = (void *)(uintptr_t)-1; \
}
#define IA6_IS_HASHED(ia) \
(!((ia)->ia6_hash.tqe_next == (void *)(uintptr_t)-1 || \
(ia)->ia6_hash.tqe_prev == (void *)(uintptr_t)-1))
static void in6_iahash_remove(struct in6_ifaddr *);
static void in6_iahash_insert(struct in6_ifaddr *);
static void in6_iahash_insert_ptp(struct in6_ifaddr *);
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 struct zone *in6ifa_zone;
#define IN6IFA_ZONE_NAME "in6_ifaddr"
struct eventhandler_lists_ctxt in6_evhdlr_ctxt;
struct eventhandler_lists_ctxt in6_clat46_evhdlr_ctxt;
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);
TAILQ_FOREACH(ia, IN6ADDR_HASH(IFA_IN6(ifa)), ia6_hash) {
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 = (u_int32_t)src->ifra_lifetime.ia6t_expire;
dst->ifra_lifetime.ia6t_preferred = (u_int32_t)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__)
static void
in6_cgareq_32_to_64(const 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;
dst->cgar_collision_count = src->cgar_collision_count;
}
#endif
#if !defined(__LP64__)
static void
in6_cgareq_64_to_32(const 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;
dst->cgar_collision_count = src->cgar_collision_count;
}
#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;
}
void
in6_cgareq_copy_from_user(const void *user_data, int user_is_64,
struct in6_cgareq *cgareq)
{
#if defined(__LP64__)
if (user_is_64) {
bcopy(user_data, cgareq, sizeof(*cgareq));
} else {
in6_cgareq_32_to_64((const struct in6_cgareq_32 *)user_data,
(struct in6_cgareq_64 *)cgareq);
}
#else
if (user_is_64) {
in6_cgareq_64_to_32((const struct in6_cgareq_64 *)user_data,
(struct in6_cgareq_32 *)cgareq);
} else {
bcopy(user_data, cgareq, sizeof(*cgareq));
}
#endif
}
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);
boolean_t from_begining = TRUE;
while (from_begining) {
from_begining = FALSE;
TAILQ_FOREACH(ia, &in6_ifaddrhead, ia6_link) {
if (ia->ia_ifa.ifa_ifp != ifp) {
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);
from_begining = TRUE;
break;
}
IFA_UNLOCK(&ia->ia_ifa);
}
}
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;
(void)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_copy_from_user(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_icmp6stat,
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(ifr->ifr_ifru.ifru_lifetime));
} 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(ifr->ifr_ifru.ifru_lifetime));
}
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;
}
static int
in6ctl_clat46start(struct ifnet *ifp)
{
struct nd_prefix *pr = NULL;
struct nd_prefix *next = NULL;
struct in6_ifaddr *ia6 = NULL;
int error = 0;
if (ifp == lo_ifp) {
return EINVAL;
}
lck_mtx_lock(nd6_mutex);
for (pr = nd_prefix.lh_first; pr; pr = next) {
next = pr->ndpr_next;
NDPR_LOCK(pr);
if (pr->ndpr_ifp != ifp) {
NDPR_UNLOCK(pr);
continue;
}
if (IN6_IS_ADDR_LINKLOCAL(&pr->ndpr_prefix.sin6_addr)) {
NDPR_UNLOCK(pr);
continue;
}
if (pr->ndpr_raf_auto == 0) {
NDPR_UNLOCK(pr);
continue;
}
if (pr->ndpr_stateflags & NDPRF_DEFUNCT) {
NDPR_UNLOCK(pr);
continue;
}
if ((pr->ndpr_stateflags & NDPRF_CLAT46) == 0
&& pr->ndpr_vltime != 0) {
NDPR_ADDREF(pr);
NDPR_UNLOCK(pr);
break;
} else {
NDPR_UNLOCK(pr);
continue;
}
}
lck_mtx_unlock(nd6_mutex);
if (pr != NULL) {
if ((ia6 = in6_pfx_newpersistaddr(pr, FALSE, &error,
TRUE, CLAT46_COLLISION_COUNT_OFFSET)) == NULL) {
nd6log0(error,
"Could not configure CLAT46 address on"
" interface %s.\n", ifp->if_xname);
} else {
IFA_LOCK(&ia6->ia_ifa);
NDPR_LOCK(pr);
ia6->ia6_ndpr = pr;
NDPR_ADDREF(pr);
pr->ndpr_stateflags |= NDPRF_CLAT46;
pr->ndpr_addrcnt++;
VERIFY(pr->ndpr_addrcnt != 0);
NDPR_UNLOCK(pr);
IFA_UNLOCK(&ia6->ia_ifa);
IFA_REMREF(&ia6->ia_ifa);
ia6 = NULL;
lck_mtx_lock(nd6_mutex);
pfxlist_onlink_check();
lck_mtx_unlock(nd6_mutex);
}
NDPR_REMREF(pr);
}
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 SIOCCLAT46_START:
if (!privileged) {
error = EPERM;
goto done;
}
error = in6ctl_clat46start(ifp);
if (error == 0) {
if_set_eflags(ifp, IFEF_CLAT46);
}
goto done;
case SIOCCLAT46_STOP:
if (!privileged) {
error = EPERM;
goto done;
}
if_clear_eflags(ifp, IFEF_CLAT46);
goto done;
case SIOCGETROUTERMODE_IN6:
intval = ifp->if_ipv6_router_mode;
bcopy(&intval, &((struct in6_ifreq *)(void *)data)->ifr_intval,
sizeof(intval));
goto done;
case SIOCSETROUTERMODE_IN6:
if (!privileged) {
error = EPERM;
goto done;
}
bcopy(&((struct in6_ifreq *)(void *)data)->ifr_intval,
&intval, sizeof(intval));
switch (intval) {
case IPV6_ROUTER_MODE_DISABLED:
case IPV6_ROUTER_MODE_EXCLUSIVE:
case IPV6_ROUTER_MODE_HYBRID:
break;
default:
error = EINVAL;
goto done;
}
error = in6_setrouter(ifp, (ipv6_router_mode_t)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_32:
case SIOCGIFCGAPREP_IN6_64:
case SIOCSIFCGAPREP_IN6_32:
case SIOCSIFCGAPREP_IN6_64:
if (!privileged) {
error = EPERM;
goto done;
}
OS_FALLTHROUGH;
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;
}
OS_FALLTHROUGH;
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;
case SIOCGIFDSTADDR:
case SIOCSIFDSTADDR:
case SIOCGIFBRDADDR:
case SIOCSIFBRDADDR:
case SIOCGIFNETMASK:
case SIOCSIFNETMASK:
case SIOCGIFADDR:
case SIOCSIFADDR:
case SIOCAIFADDR:
case SIOCDIFADDR:
error = EINVAL;
goto done;
}
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;
}
OS_FALLTHROUGH;
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;
uint8_t 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 = (uint8_t)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);
if (ifra->ifra_flags & (IN6_IFF_AUTOCONF | IN6_IFF_DYNAMIC)) {
pr0.ndpr_vltime = ifra->ifra_lifetime.ia6t_vltime;
pr0.ndpr_pltime = ifra->ifra_lifetime.ia6t_pltime;
} else {
pr0.ndpr_vltime = ND6_INFINITE_LIFETIME;
pr0.ndpr_pltime = ND6_INFINITE_LIFETIME;
}
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(pr);
if ((ia->ia6_flags & IN6_IFF_AUTOCONF) != 0 &&
ip6_use_tempaddr &&
pr->ndpr_addrcnt == 1 &&
(!IN6_IS_ADDR_UNIQUE_LOCAL(&ia->ia_addr.sin6_addr)
|| ip6_ula_use_tempaddr)) {
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 = (uint8_t)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_ipv6_router_mode == IPV6_ROUTER_MODE_EXCLUSIVE) {
if_clear_eflags(ifp, IFEF_ACCEPT_RTADV);
error = EBUSY;
} else {
if_set_eflags(ifp, IFEF_ACCEPT_RTADV);
}
ifnet_lock_done(ifp);
} else {
struct in6_ifaddr *ia = NULL;
if_clear_eflags(ifp, IFEF_ACCEPT_RTADV);
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
boolean_t from_begining = TRUE;
while (from_begining) {
from_begining = FALSE;
TAILQ_FOREACH(ia, &in6_ifaddrhead, ia6_link) {
if (ia->ia_ifa.ifa_ifp != ifp) {
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);
from_begining = TRUE;
break;
}
IFA_UNLOCK(&ia->ia_ifa);
}
}
lck_rw_done(&in6_ifaddr_rwlock);
}
return error;
}
static __attribute__((noinline)) int
in6_setrouter(struct ifnet *ifp, ipv6_router_mode_t mode)
{
int error = 0;
ipv6_router_mode_t prev_mode;
VERIFY(ifp != NULL);
if (ifp->if_flags & IFF_LOOPBACK) {
return ENODEV;
}
prev_mode = ifp->if_ipv6_router_mode;
if (prev_mode == mode) {
return 0;
}
if (mode == IPV6_ROUTER_MODE_EXCLUSIVE) {
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);
}
}
}
ifp->if_ipv6_router_mode = mode;
lck_mtx_lock(nd6_mutex);
defrouter_select(ifp, NULL);
lck_mtx_unlock(nd6_mutex);
if_allmulti(ifp, (mode == IPV6_ROUTER_MODE_EXCLUSIVE));
if (mode == IPV6_ROUTER_MODE_EXCLUSIVE ||
(prev_mode == IPV6_ROUTER_MODE_EXCLUSIVE
&& mode == IPV6_ROUTER_MODE_DISABLED)) {
error = in6_autoconf(ifp, FALSE);
}
return error;
}
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(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(info,
"%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(info,
"%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;
}
lck_mtx_lock(&hostname_lock);
int n = in6_nigroup(ifp, hostname, hostnamelen, &mltaddr.sin6_addr);
lck_mtx_unlock(&hostname_lock);
if (n == 0) {
imm = in6_joingroup(ifp, &mltaddr.sin6_addr, &error,
delay);
if (!imm) {
nd6log(info,
"%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(info,
"%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
bzero(&mltmask, sizeof(mltmask));
mltmask.sin6_len = sizeof(struct sockaddr_in6);
mltmask.sin6_family = AF_INET6;
mltmask.sin6_addr = in6mask8;
#define MLTMASK_LEN_8_BITS 1
bzero(&mltaddr, sizeof(mltaddr));
mltaddr.sin6_len = sizeof(struct sockaddr_in6);
mltaddr.sin6_family = AF_INET6;
mltaddr.sin6_addr = in6addr_multicast_prefix;
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_8_BITS)) {
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);
}
}
#undef MLTMASK_LEN_8_BITS
++nd6_sched_timeout_want;
IFA_LOCK_SPIN(ifa);
if (in6if_do_dad(ifp) && (ia->ia6_flags & IN6_IFF_NODAD) == 0 &&
(ia->ia6_flags & IN6_IFF_DADPROGRESS) != 0) {
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 = (uint8_t)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));
}
struct sockaddr_in6 lookup_address = ifra->ifra_addr;
if (IN6_IS_ADDR_LINKLOCAL(&lookup_address.sin6_addr)) {
if (lookup_address.sin6_addr.s6_addr16[1] == 0) {
lookup_address.sin6_addr.s6_addr16[1] =
htons(ifp->if_index);
} else if (lookup_address.sin6_addr.s6_addr16[1] !=
htons(ifp->if_index)) {
error = EINVAL;
goto done;
}
if (lookup_address.sin6_scope_id != 0 &&
lookup_address.sin6_scope_id !=
(u_int32_t)ifp->if_index) {
error = EINVAL;
goto done;
}
}
ia = in6ifa_ifpwithaddr(ifp, &lookup_address.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) {
zalloc_flags_t how;
ifaupflags |= IN6_IFAUPDATE_NEWADDR;
how = (ifaupflags & IN6_IFAUPDATE_NOWAIT) ? Z_NOWAIT : Z_WAITOK;
ia = in6_ifaddr_alloc(how);
if (ia == NULL) {
error = ENOBUFS;
goto unwind;
}
ifa = &ia->ia_ifa;
IFA_ADDREF(ifa);
IA6_HASH_INIT(ia);
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);
TAILQ_INSERT_TAIL(&in6_ifaddrhead, ia, ia6_link);
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 *nia;
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 = 0;
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
TAILQ_FOREACH(nia, &in6_ifaddrhead, ia6_link) {
if (ia == nia) {
TAILQ_REMOVE(&in6_ifaddrhead, ia, ia6_link);
IFA_LOCK(ifa);
if (IA6_IS_HASHED(ia)) {
in6_iahash_remove(ia);
}
IFA_UNLOCK(ifa);
unlinked = 1;
break;
}
}
IFA_LOCK(ifa);
if (!IN6_IS_ADDR_LINKLOCAL(&ia->ia_addr.sin6_addr)) {
if (ia->ia6_ndpr == NULL) {
log(LOG_NOTICE, "in6_unlink_ifa: IPv6 address "
"0x%llx has no prefix\n",
(uint64_t)VM_KERNEL_ADDRPERM(ia));
} else {
struct nd_prefix *pr = ia->ia6_ndpr;
ia->ia6_flags &= ~IN6_IFF_AUTOCONF;
ia->ia6_ndpr = NULL;
NDPR_LOCK(pr);
VERIFY(pr->ndpr_addrcnt != 0);
pr->ndpr_addrcnt--;
if (ia->ia6_flags & IN6_IFF_CLAT46) {
pr->ndpr_stateflags &= ~NDPRF_CLAT46;
}
NDPR_UNLOCK(pr);
NDPR_REMREF(pr);
}
}
IFA_UNLOCK(ifa);
lck_rw_done(&in6_ifaddr_rwlock);
if ((ia->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);
boolean_t from_begining = TRUE;
while (from_begining) {
from_begining = FALSE;
TAILQ_FOREACH(ia, &in6_ifaddrhead, ia6_link) {
if (ia->ia_ifa.ifa_ifp != ifp) {
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);
from_begining = TRUE;
break;
}
}
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;
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
IFA_LOCK(&ia->ia_ifa);
if (IA6_IS_HASHED(ia)) {
in6_iahash_remove(ia);
}
if ((ifp->if_flags & IFF_POINTOPOINT)) {
in6_iahash_insert_ptp(ia);
} else {
in6_iahash_insert(ia);
}
IFA_UNLOCK(&ia->ia_ifa);
lck_rw_done(&in6_ifaddr_rwlock);
if ((ifaupflags & IN6_IFAUPDATE_1STADDR) != 0) {
error = ifnet_ioctl(ifp, PF_INET6, SIOCSIFADDR, ia);
if (error != 0) {
if (error != EOPNOTSUPP) {
goto failed;
}
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) {
goto failed;
}
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;
failed:
VERIFY(error != 0);
lck_rw_lock_exclusive(&in6_ifaddr_rwlock);
IFA_LOCK(&ia->ia_ifa);
if (IA6_IS_HASHED(ia)) {
in6_iahash_remove(ia);
}
IFA_UNLOCK(&ia->ia_ifa);
lck_rw_done(&in6_ifaddr_rwlock);
return error;
}
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_ifpwithflag(struct ifnet * ifp, int flag)
{
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 ((((struct in6_ifaddr *)ifa)->ia6_flags & flag) == flag) {
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);
TAILQ_FOREACH(ia, IN6ADDR_HASH(addr), ia6_hash) {
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) || IN6_IS_ADDR_MC_UNICAST_BASED_LINKLOCAL(in6)) {
return 1;
}
lck_rw_lock_shared(&in6_ifaddr_rwlock);
TAILQ_FOREACH(ia, &in6_ifaddrhead, ia6_link) {
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 | IN6_IFF_CLAT46)) {
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 | IN6_IFF_CLAT46)) {
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 | IN6_IFF_CLAT46)) {
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;
}
if (ifp->if_family == IFNET_FAMILY_IPSEC ||
ifp->if_family == IFNET_FAMILY_UTUN) {
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;
case IFT_6LOWPAN:
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;
if (ifa) {
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 = (u_int32_t)ia6_lt.ia6t_expire;
in6_event_data.ia_lifetime.ia6t_preferred = (u_int32_t)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));
vm_size_t in6ifa_size = (in6ifa_debug == 0) ? sizeof(struct in6_ifaddr) :
sizeof(struct in6_ifaddr_dbg);
in6ifa_zone = zone_create(IN6IFA_ZONE_NAME, in6ifa_size, ZC_ZFREE_CLEARMEM);
lck_mtx_init(&in6ifa_trash_lock, ifa_mtx_grp, ifa_mtx_attr);
TAILQ_INIT(&in6ifa_trash_head);
}
static struct in6_ifaddr *
in6_ifaddr_alloc(zalloc_flags_t how)
{
struct in6_ifaddr *in6ifa;
in6ifa = zalloc_flags(in6ifa_zone, how | Z_ZERO);
if (in6ifa != NULL) {
in6ifa->ia_ifa.ifa_free = in6_ifaddr_free;
in6ifa->ia_ifa.ifa_debug |= IFD_ALLOC;
in6ifa->ia_ifa.ifa_del_wc = &in6ifa->ia_ifa.ifa_debug;
in6ifa->ia_ifa.ifa_del_waiters = 0;
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));
}
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)
{
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;
}
}
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;
}
}
} else {
*aux_type = 0;
*aux_len = 0;
}
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:
;
}
}
struct in6_llentry {
struct llentry base;
};
#define IN6_LLTBL_DEFAULT_HSIZE 32
#define IN6_LLTBL_HASH(k, h) \
((((((((k) >> 8) ^ (k)) >> 8) ^ (k)) >> 8) ^ (k)) & ((h) - 1))
static void
in6_lltable_destroy_lle_unlocked(struct llentry *lle)
{
LLE_LOCK_DESTROY(lle);
LLE_REQ_DESTROY(lle);
FREE(lle, M_LLTABLE);
}
static void
in6_lltable_destroy_lle(struct llentry *lle)
{
LLE_WUNLOCK(lle);
in6_lltable_destroy_lle_unlocked(lle);
}
static struct llentry *
in6_lltable_new(const struct in6_addr *addr6, uint16_t flags)
{
#pragma unused(flags)
struct in6_llentry *lle;
MALLOC(lle, struct in6_llentry *, sizeof(struct in6_llentry), M_LLTABLE, M_NOWAIT | M_ZERO);
if (lle == NULL) {
return NULL;
}
lle->base.r_l3addr.addr6 = *addr6;
lle->base.lle_refcnt = 1;
lle->base.lle_free = in6_lltable_destroy_lle;
LLE_LOCK_INIT(&lle->base);
LLE_REQ_INIT(&lle->base);
#if 0
lle->base.lle_timer = thread_call_allocate(nd6_llinfo_timer, lle);
if (lle->base.lle_timer == NULL) {
printf("lle_timer thread call could not be allocated.\n");
LLE_LOCK_DESTROY(&lle->base);
LLE_REQ_DESTROY(&lle->base);
FREE(lle, M_LLTABLE);
return NULL;
}
#endif
return &lle->base;
}
static int
in6_lltable_match_prefix(const struct sockaddr *saddr,
const struct sockaddr *smask, uint16_t flags, struct llentry *lle)
{
const struct in6_addr *addr, *mask, *lle_addr;
addr = &((const struct sockaddr_in6 *)(const void *)saddr)->sin6_addr;
mask = &((const struct sockaddr_in6 *)(const void *)smask)->sin6_addr;
lle_addr = &lle->r_l3addr.addr6;
if (IN6_ARE_MASKED_ADDR_EQUAL(lle_addr, addr, mask) == 0) {
return 0;
}
if (lle->la_flags & LLE_IFADDR) {
if (IN6_ARE_ADDR_EQUAL(addr, lle_addr) &&
(flags & LLE_STATIC) != 0) {
return 1;
}
return 0;
}
if ((flags & LLE_STATIC) || !(lle->la_flags & LLE_STATIC)) {
return 1;
}
return 0;
}
static void
in6_lltable_free_entry(struct lltable *llt, struct llentry *lle)
{
struct ifnet *ifp;
LLE_WLOCK_ASSERT(lle);
KASSERT(llt != NULL, ("lltable is NULL"));
if ((lle->la_flags & LLE_LINKED) != 0) {
ifp = llt->llt_ifp;
if_afdata_wlock_assert(ifp, llt->llt_af);
lltable_unlink_entry(llt, lle);
}
#if 0
if (thread_call_cancel(lle->lle_timer) == TRUE) {
LLE_REMREF(lle);
}
#endif
llentry_free(lle);
}
static int
in6_lltable_rtcheck(struct ifnet *ifp,
uint16_t flags, const struct sockaddr *l3addr)
{
#pragma unused(flags)
struct rtentry *rt;
KASSERT(l3addr->sa_family == AF_INET6,
("sin_family %d", l3addr->sa_family));
rt = rtalloc1(__DECONST(struct sockaddr *, l3addr), 0, 0);
if (rt == NULL || (rt->rt_flags & RTF_GATEWAY) || rt->rt_ifp != ifp) {
struct ifaddr *ifa;
ifa = ifaof_ifpforaddr(__DECONST(struct sockaddr *, l3addr), ifp);
if (ifa != NULL) {
IFA_REMREF(ifa);
if (rt != NULL) {
rtfree(rt);
}
return 0;
}
log(LOG_INFO, "IPv6 address: \"%s\" is not on the network\n",
ip6_sprintf(&((const struct sockaddr_in6 *)(const void *)l3addr)->sin6_addr));
if (rt != NULL) {
rtfree(rt);
}
return EINVAL;
}
rtfree(rt);
return 0;
}
static inline uint32_t
in6_lltable_hash_dst(const struct in6_addr *dst, uint32_t hsize)
{
return IN6_LLTBL_HASH(dst->s6_addr32[3], hsize);
}
static uint32_t
in6_lltable_hash(const struct llentry *lle, uint32_t hsize)
{
return in6_lltable_hash_dst(&lle->r_l3addr.addr6, hsize);
}
static void
in6_lltable_fill_sa_entry(const struct llentry *lle, struct sockaddr *sa)
{
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)(void *)sa;
bzero(sin6, sizeof(*sin6));
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(*sin6);
sin6->sin6_addr = lle->r_l3addr.addr6;
}
static inline struct llentry *
in6_lltable_find_dst(struct lltable *llt, const struct in6_addr *dst)
{
struct llentry *lle;
struct llentries *lleh;
u_int hashidx;
hashidx = in6_lltable_hash_dst(dst, llt->llt_hsize);
lleh = &llt->lle_head[hashidx];
LIST_FOREACH(lle, lleh, lle_next) {
if (lle->la_flags & LLE_DELETED) {
continue;
}
if (IN6_ARE_ADDR_EQUAL(&lle->r_l3addr.addr6, dst)) {
break;
}
}
return lle;
}
static void
in6_lltable_delete_entry(struct lltable *llt, struct llentry *lle)
{
#pragma unused(llt)
lle->la_flags |= LLE_DELETED;
EVENTHANDLER_INVOKE(NULL, lle_event, lle, LLENTRY_DELETED);
#ifdef DIAGNOSTIC
log(LOG_INFO, "ifaddr cache = %p is deleted\n", lle);
#endif
llentry_free(lle);
}
static struct llentry *
in6_lltable_alloc(struct lltable *llt, uint16_t flags,
const struct sockaddr *l3addr)
{
const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)(const void *)l3addr;
struct ifnet *ifp = llt->llt_ifp;
struct llentry *lle;
KASSERT(l3addr->sa_family == AF_INET6,
("sin_family %d", l3addr->sa_family));
if (!(flags & LLE_IFADDR) &&
in6_lltable_rtcheck(ifp, flags, l3addr) != 0) {
return NULL;
}
lle = in6_lltable_new(&sin6->sin6_addr, flags);
if (lle == NULL) {
log(LOG_INFO, "lla_lookup: new lle malloc failed\n");
return NULL;
}
lle->la_flags = (uint16_t)flags;
if ((flags & LLE_IFADDR) == LLE_IFADDR) {
lltable_set_entry_addr(ifp, lle, LLADDR(SDL(ifp->if_lladdr->ifa_addr)));
lle->la_flags |= LLE_STATIC;
}
if ((lle->la_flags & LLE_STATIC) != 0) {
lle->ln_state = ND6_LLINFO_REACHABLE;
}
return lle;
}
static struct llentry *
in6_lltable_lookup(struct lltable *llt, uint16_t flags,
const struct sockaddr *l3addr)
{
const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)(const void *)l3addr;
struct llentry *lle;
IF_AFDATA_LOCK_ASSERT(llt->llt_ifp, llt->llt_af);
KASSERT(l3addr->sa_family == AF_INET6,
("sin_family %d", l3addr->sa_family));
lle = in6_lltable_find_dst(llt, &sin6->sin6_addr);
if (lle == NULL) {
return NULL;
}
KASSERT((flags & (LLE_UNLOCKED | LLE_EXCLUSIVE)) !=
(LLE_UNLOCKED | LLE_EXCLUSIVE), ("wrong lle request flags: 0x%X",
flags));
if (flags & LLE_UNLOCKED) {
return lle;
}
if (flags & LLE_EXCLUSIVE) {
LLE_WLOCK(lle);
} else {
LLE_RLOCK(lle);
}
return lle;
}
static int
in6_lltable_dump_entry(struct lltable *llt, struct llentry *lle,
struct sysctl_req *wr)
{
struct ifnet *ifp = llt->llt_ifp;
struct {
struct rt_msghdr rtm;
struct sockaddr_in6 sin6;
#ifdef __LP64__
uint32_t pad;
#endif
struct sockaddr_dl sdl;
} ndpc;
struct sockaddr_dl *sdl;
int error;
bzero(&ndpc, sizeof(ndpc));
if ((lle->la_flags & LLE_DELETED) == LLE_DELETED) {
return 0;
}
lltable_fill_sa_entry(lle,
(struct sockaddr *)&ndpc.sin6);
ndpc.rtm.rtm_msglen = sizeof(ndpc);
ndpc.rtm.rtm_version = RTM_VERSION;
ndpc.rtm.rtm_type = RTM_GET;
ndpc.rtm.rtm_flags = RTF_UP;
ndpc.rtm.rtm_addrs = RTA_DST | RTA_GATEWAY;
if (lle->la_flags & LLE_PUB) {
ndpc.rtm.rtm_flags |= RTF_ANNOUNCE;
}
sdl = &ndpc.sdl;
sdl->sdl_family = AF_LINK;
sdl->sdl_len = sizeof(*sdl);
sdl->sdl_index = ifp->if_index;
sdl->sdl_type = ifp->if_type;
if ((lle->la_flags & LLE_VALID) == LLE_VALID) {
sdl->sdl_alen = ifp->if_addrlen;
bcopy(&lle->ll_addr, LLADDR(sdl), ifp->if_addrlen);
} else {
sdl->sdl_alen = 0;
bzero(LLADDR(sdl), ifp->if_addrlen);
}
if (lle->la_expire != 0) {
clock_sec_t secs;
clock_usec_t usecs;
clock_get_calendar_microtime(&secs, &usecs);
ndpc.rtm.rtm_rmx.rmx_expire = (int32_t)(lle->la_expire +
lle->lle_remtime / hz +
secs - net_uptime());
}
ndpc.rtm.rtm_flags |= (RTF_HOST | RTF_LLDATA);
if (lle->la_flags & LLE_STATIC) {
ndpc.rtm.rtm_flags |= RTF_STATIC;
}
if (lle->la_flags & LLE_IFADDR) {
ndpc.rtm.rtm_flags |= RTF_PINNED;
}
if (lle->ln_router != 0) {
ndpc.rtm.rtm_flags |= RTF_GATEWAY;
}
ndpc.rtm.rtm_rmx.rmx_pksent = lle->la_asked;
ndpc.rtm.rtm_rmx.rmx_state = lle->ln_state;
ndpc.rtm.rtm_index = ifp->if_index;
error = SYSCTL_OUT(wr, &ndpc, sizeof(ndpc));
return error;
}
struct lltable *
in6_lltattach(struct ifnet *ifp)
{
struct lltable *llt;
llt = lltable_allocate_htbl(IN6_LLTBL_DEFAULT_HSIZE);
llt->llt_af = AF_INET6;
llt->llt_ifp = ifp;
llt->llt_lookup = in6_lltable_lookup;
llt->llt_alloc_entry = in6_lltable_alloc;
llt->llt_delete_entry = in6_lltable_delete_entry;
llt->llt_dump_entry = in6_lltable_dump_entry;
llt->llt_hash = in6_lltable_hash;
llt->llt_fill_sa_entry = in6_lltable_fill_sa_entry;
llt->llt_free_entry = in6_lltable_free_entry;
llt->llt_match_prefix = in6_lltable_match_prefix;
lltable_link(llt);
return llt;
}
void
in6_ip6_to_sockaddr(const struct in6_addr *ip6, u_int16_t port,
struct sockaddr_in6 *sin6, u_int32_t maxlen)
{
if (maxlen < sizeof(struct sockaddr_in6)) {
return;
}
*sin6 = (struct sockaddr_in6) {
.sin6_family = AF_INET6,
.sin6_len = sizeof(*sin6),
.sin6_port = port,
.sin6_addr = *ip6,
};
if (IN6_IS_SCOPE_EMBED(&sin6->sin6_addr)) {
sin6->sin6_scope_id = ntohs(sin6->sin6_addr.s6_addr16[1]);
sin6->sin6_addr.s6_addr16[1] = 0;
}
}
struct in6_event {
in6_evhdlr_code_t in6_event_code;
struct ifnet *in6_ifp;
struct in6_addr in6_address;
uint32_t val;
};
struct in6_event2kev in6_event2kev_array[IN6_EVENT_MAX] = {
{
.in6_event_code = IN6_ADDR_MARKED_DUPLICATED,
.in6_event_kev_subclass = KEV_ND6_SUBCLASS,
.in6_event_kev_code = KEV_ND6_DAD_FAILURE,
.in6_event_str = "IN6_ADDR_MARKED_DUPLICATED",
},
{
.in6_event_code = IN6_ADDR_MARKED_DETACHED,
.in6_event_kev_subclass = KEV_ND6_SUBCLASS,
.in6_event_kev_code = KEV_ND6_ADDR_DETACHED,
.in6_event_str = "IN6_ADDR_MARKED_DETACHED",
},
{
.in6_event_code = IN6_ADDR_MARKED_DEPRECATED,
.in6_event_kev_subclass = KEV_ND6_SUBCLASS,
.in6_event_kev_code = KEV_ND6_ADDR_DEPRECATED,
.in6_event_str = "IN6_ADDR_MARKED_DEPRECATED",
},
{
.in6_event_code = IN6_NDP_RTR_EXPIRY,
.in6_event_kev_subclass = KEV_ND6_SUBCLASS,
.in6_event_kev_code = KEV_ND6_RTR_EXPIRED,
.in6_event_str = "IN6_NDP_RTR_EXPIRY",
},
{
.in6_event_code = IN6_NDP_PFX_EXPIRY,
.in6_event_kev_subclass = KEV_ND6_SUBCLASS,
.in6_event_kev_code = KEV_ND6_PFX_EXPIRED,
.in6_event_str = "IN6_NDP_PFX_EXPIRY",
},
{
.in6_event_code = IN6_NDP_ADDR_EXPIRY,
.in6_event_kev_subclass = KEV_ND6_SUBCLASS,
.in6_event_kev_code = KEV_ND6_ADDR_EXPIRED,
.in6_event_str = "IN6_NDP_ADDR_EXPIRY",
},
};
void
in6_eventhdlr_callback(struct eventhandler_entry_arg arg0 __unused,
in6_evhdlr_code_t in6_ev_code, struct ifnet *ifp,
struct in6_addr *p_addr6, uint32_t val)
{
struct kev_msg ev_msg;
struct kev_nd6_event nd6_event;
bzero(&ev_msg, sizeof(ev_msg));
bzero(&nd6_event, sizeof(nd6_event));
nd6log0(info, "%s Event %s received for %s\n",
__func__, in6_event2kev_array[in6_ev_code].in6_event_str,
ip6_sprintf(p_addr6));
ev_msg.vendor_code = KEV_VENDOR_APPLE;
ev_msg.kev_class = KEV_NETWORK_CLASS;
ev_msg.kev_subclass =
in6_event2kev_array[in6_ev_code].in6_event_kev_subclass;
ev_msg.event_code =
in6_event2kev_array[in6_ev_code].in6_event_kev_code;
nd6_event.link_data.if_family = ifp->if_family;
nd6_event.link_data.if_unit = ifp->if_unit;
strlcpy(nd6_event.link_data.if_name, ifp->if_name,
sizeof(nd6_event.link_data.if_name));
VERIFY(p_addr6 != NULL);
bcopy(p_addr6, &nd6_event.in6_address,
sizeof(nd6_event.in6_address));
nd6_event.val = val;
ev_msg.dv[0].data_ptr = &nd6_event;
ev_msg.dv[0].data_length = sizeof(nd6_event);
kev_post_msg(&ev_msg);
}
static void
in6_event_callback(void *arg)
{
struct in6_event *p_in6_ev = (struct in6_event *)arg;
EVENTHANDLER_INVOKE(&in6_evhdlr_ctxt, in6_event,
p_in6_ev->in6_event_code, p_in6_ev->in6_ifp,
&p_in6_ev->in6_address, p_in6_ev->val);
}
struct in6_event_nwk_wq_entry {
struct nwk_wq_entry nwk_wqe;
struct in6_event in6_ev_arg;
};
void
in6_event_enqueue_nwk_wq_entry(in6_evhdlr_code_t in6_event_code,
struct ifnet *ifp, struct in6_addr *p_addr6,
uint32_t val)
{
struct in6_event_nwk_wq_entry *p_in6_ev = NULL;
MALLOC(p_in6_ev, struct in6_event_nwk_wq_entry *,
sizeof(struct in6_event_nwk_wq_entry),
M_NWKWQ, M_WAITOK | M_ZERO);
p_in6_ev->nwk_wqe.func = in6_event_callback;
p_in6_ev->nwk_wqe.is_arg_managed = TRUE;
p_in6_ev->nwk_wqe.arg = &p_in6_ev->in6_ev_arg;
p_in6_ev->in6_ev_arg.in6_event_code = in6_event_code;
p_in6_ev->in6_ev_arg.in6_ifp = ifp;
if (p_addr6 != NULL) {
bcopy(p_addr6, &p_in6_ev->in6_ev_arg.in6_address,
sizeof(p_in6_ev->in6_ev_arg.in6_address));
}
p_in6_ev->in6_ev_arg.val = val;
nwk_wq_enqueue((struct nwk_wq_entry*)p_in6_ev);
}
static void
in6_iahash_remove(struct in6_ifaddr *ia)
{
LCK_RW_ASSERT(&in6_ifaddr_rwlock, LCK_RW_ASSERT_EXCLUSIVE);
IFA_LOCK_ASSERT_HELD(&ia->ia_ifa);
if (!IA6_IS_HASHED(ia)) {
panic("%s: attempt to remove wrong ia %p from ipv6 hash table\n", __func__, ia);
}
TAILQ_REMOVE(IN6ADDR_HASH(&ia->ia_addr.sin6_addr), ia, ia6_hash);
IA6_HASH_INIT(ia);
if (IFA_REMREF_LOCKED(&ia->ia_ifa) == NULL) {
panic("%s: unexpected (missing) refcnt ifa=%p", __func__,
&ia->ia_ifa);
}
}
static void
in6_iahash_insert(struct in6_ifaddr *ia)
{
LCK_RW_ASSERT(&in6_ifaddr_rwlock, LCK_RW_ASSERT_EXCLUSIVE);
IFA_LOCK_ASSERT_HELD(&ia->ia_ifa);
if (ia->ia_addr.sin6_family != AF_INET6) {
panic("%s: attempt to insert wrong ia %p into hash table\n", __func__, ia);
} else if (IA6_IS_HASHED(ia)) {
panic("%s: attempt to double-insert ia %p into hash table\n", __func__, ia);
}
TAILQ_INSERT_HEAD(IN6ADDR_HASH(&ia->ia_addr.sin6_addr),
ia, ia6_hash);
IFA_ADDREF_LOCKED(&ia->ia_ifa);
}
static void
in6_iahash_insert_ptp(struct in6_ifaddr *ia)
{
struct in6_ifaddr *tmp_ifa;
struct ifnet *tmp_ifp;
LCK_RW_ASSERT(&in6_ifaddr_rwlock, LCK_RW_ASSERT_EXCLUSIVE);
IFA_LOCK_ASSERT_HELD(&ia->ia_ifa);
if (ia->ia_addr.sin6_family != AF_INET6) {
panic("%s: attempt to insert wrong ia %p into hash table\n", __func__, ia);
} else if (IA6_IS_HASHED(ia)) {
panic("%s: attempt to double-insert ia %p into hash table\n", __func__, ia);
}
IFA_UNLOCK(&ia->ia_ifa);
TAILQ_FOREACH(tmp_ifa, IN6ADDR_HASH(&ia->ia_addr.sin6_addr), ia6_hash) {
IFA_LOCK(&tmp_ifa->ia_ifa);
if (IN6_ARE_ADDR_EQUAL(&tmp_ifa->ia_addr.sin6_addr, &ia->ia_addr.sin6_addr)) {
IFA_UNLOCK(&tmp_ifa->ia_ifa);
break;
}
IFA_UNLOCK(&tmp_ifa->ia_ifa);
}
tmp_ifp = (tmp_ifa == NULL) ? NULL : tmp_ifa->ia_ifp;
IFA_LOCK(&ia->ia_ifa);
if (tmp_ifp == NULL) {
TAILQ_INSERT_HEAD(IN6ADDR_HASH(&ia->ia_addr.sin6_addr),
ia, ia6_hash);
} else {
TAILQ_INSERT_TAIL(IN6ADDR_HASH(&ia->ia_addr.sin6_addr),
ia, ia6_hash);
}
IFA_ADDREF_LOCKED(&ia->ia_ifa);
}