#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/syslog.h>
#include <sys/protosw.h>
#include <kern/cpu_number.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/route.h>
#include <net/bpf.h>
#include <net/kpi_protocol.h>
#include <net/kpi_interface.h>
#include <net/init.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#if INET
#include <netinet/in_var.h>
#include <netinet/in_gif.h>
#include <netinet/ip_var.h>
#endif
#if INET6
#include <netinet6/in6_var.h>
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#include <netinet6/in6_gif.h>
#include <netinet6/ip6protosw.h>
#endif
#include <netinet/ip_encap.h>
#include <net/dlil.h>
#include <net/if_gif.h>
#include <net/net_osdep.h>
#if CONFIG_MACF_NET
#include <security/mac_framework.h>
#endif
#define GIFNAME "gif"
#define GIFDEV "if_gif"
#define GIF_MAXUNIT 0x7fff
static lck_grp_t *gif_mtx_grp;
static lck_grp_attr_t *gif_mtx_grp_attr;
static lck_attr_t *gif_mtx_attr;
decl_lck_mtx_data(static, gif_mtx_data);
static lck_mtx_t *gif_mtx = &gif_mtx_data;
TAILQ_HEAD(gifhead, gif_softc) gifs = TAILQ_HEAD_INITIALIZER(gifs);
static int gif_encapcheck(const struct mbuf *, int, int, void *);
static errno_t gif_output(ifnet_t ifp, mbuf_t m);
static errno_t gif_input(ifnet_t ifp, protocol_family_t protocol_family,
mbuf_t m, char *frame_header);
static errno_t gif_ioctl(ifnet_t ifp, u_long cmd, void *data);
static int ngif = 0;
#if INET
static struct protosw in_gif_protosw =
{
.pr_type = SOCK_RAW,
.pr_protocol = 0,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = in_gif_input,
.pr_usrreqs = &rip_usrreqs,
.pr_unlock = rip_unlock,
};
#endif
#if INET6
static struct ip6protosw in6_gif_protosw =
{
.pr_type = SOCK_RAW,
.pr_protocol = 0,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = in6_gif_input,
.pr_usrreqs = &rip6_usrreqs,
.pr_unlock = rip_unlock,
};
#endif
static if_clone_t gif_cloner = NULL;
static int gif_clone_create(struct if_clone *, uint32_t, void *);
static int gif_clone_destroy(struct ifnet *);
static void gif_delete_tunnel(struct gif_softc *);
static void gif_detach(struct ifnet *);
static int
gif_demux(
ifnet_t ifp,
__unused mbuf_t m,
__unused char *frame_header,
protocol_family_t *protocol_family)
{
struct gif_softc *sc = ifnet_softc(ifp);
GIF_LOCK(sc);
*protocol_family = sc->gif_proto;
GIF_UNLOCK(sc);
return (0);
}
static errno_t
gif_add_proto(
ifnet_t ifp,
protocol_family_t protocol_family,
__unused const struct ifnet_demux_desc *demux_array,
__unused u_int32_t demux_count)
{
struct gif_softc *sc = ifnet_softc(ifp);
GIF_LOCK(sc);
if (sc->gif_proto != 0)
printf("gif_add_proto: request add_proto for gif%d\n",
ifnet_unit(ifp));
sc->gif_proto = protocol_family;
GIF_UNLOCK(sc);
return (0);
}
static errno_t
gif_del_proto(
ifnet_t ifp,
protocol_family_t protocol_family)
{
struct gif_softc *sc = ifnet_softc(ifp);
GIF_LOCK(sc);
if (sc->gif_proto == protocol_family)
sc->gif_proto = 0;
GIF_UNLOCK(sc);
return (0);
}
static errno_t
gif_attach_proto_family(
ifnet_t ifp,
protocol_family_t protocol_family)
{
struct ifnet_attach_proto_param reg;
errno_t stat;
bzero(®, sizeof (reg));
reg.input = gif_input;
stat = ifnet_attach_protocol(ifp, protocol_family, ®);
if (stat && stat != EEXIST) {
printf("gif_attach_proto_family can't attach interface \
fam=%d\n", protocol_family);
}
return (stat);
}
void
gif_init(void)
{
errno_t result;
struct ifnet_clone_params ifnet_clone_params;
struct if_clone *ifc = NULL;
TAILQ_INIT(&gifs);
gif_mtx_grp_attr = lck_grp_attr_alloc_init();
gif_mtx_grp = lck_grp_alloc_init("gif", gif_mtx_grp_attr);
gif_mtx_attr = lck_attr_alloc_init();
lck_mtx_init(gif_mtx, gif_mtx_grp, gif_mtx_attr);
result = proto_register_plumber(PF_INET, APPLE_IF_FAM_GIF,
gif_attach_proto_family, NULL);
if (result != 0)
printf("proto_register_plumber failed for AF_INET error=%d\n",
result);
result = proto_register_plumber(PF_INET6, APPLE_IF_FAM_GIF,
gif_attach_proto_family, NULL);
if (result != 0)
printf("proto_register_plumber failed for AF_INET6 error=%d\n",
result);
ifnet_clone_params.ifc_name = "gif";
ifnet_clone_params.ifc_create = gif_clone_create;
ifnet_clone_params.ifc_destroy = gif_clone_destroy;
result = ifnet_clone_attach(&ifnet_clone_params, &gif_cloner);
if (result != 0)
printf("gifattach: ifnet_clone_attach failed %d\n", result);
ifc = if_clone_lookup("gif", NULL);
gif_clone_create(ifc, 0, NULL);
}
static errno_t
gif_set_bpf_tap(
ifnet_t ifp,
bpf_tap_mode mode,
bpf_packet_func callback)
{
struct gif_softc *sc = ifnet_softc(ifp);
GIF_LOCK(sc);
sc->tap_mode = mode;
sc->tap_callback = callback;
GIF_UNLOCK(sc);
return (0);
}
static void
gif_detach(struct ifnet *ifp)
{
struct gif_softc *sc = ifp->if_softc;
lck_mtx_destroy(&sc->gif_lock, gif_mtx_grp);
_FREE(ifp->if_softc, M_DEVBUF);
ifp->if_softc = NULL;
(void) ifnet_release(ifp);
}
static int
gif_clone_create(struct if_clone *ifc, uint32_t unit, __unused void *params)
{
struct gif_softc *sc = NULL;
struct ifnet_init_params gif_init_params;
errno_t error = 0;
lck_mtx_lock(gif_mtx);
if (ngif >= GIF_MAXUNIT) {
error = ENXIO;
goto done;
}
sc = _MALLOC(sizeof (struct gif_softc), M_DEVBUF, M_WAITOK);
if (sc == NULL) {
log(LOG_ERR, "gif_clone_create: failed to allocate gif%d\n",
unit);
error = ENOBUFS;
goto done;
}
bzero(sc, sizeof (struct gif_softc));
snprintf(sc->gif_ifname, sizeof (sc->gif_ifname), "%s%d",
ifc->ifc_name, unit);
lck_mtx_init(&sc->gif_lock, gif_mtx_grp, gif_mtx_attr);
bzero(&gif_init_params, sizeof (gif_init_params));
gif_init_params.uniqueid = sc->gif_ifname;
gif_init_params.uniqueid_len = strlen(sc->gif_ifname);
gif_init_params.name = GIFNAME;
gif_init_params.unit = unit;
gif_init_params.type = IFT_GIF;
gif_init_params.family = IFNET_FAMILY_GIF;
gif_init_params.output = gif_output;
gif_init_params.demux = gif_demux;
gif_init_params.add_proto = gif_add_proto;
gif_init_params.del_proto = gif_del_proto;
gif_init_params.softc = sc;
gif_init_params.ioctl = gif_ioctl;
gif_init_params.set_bpf_tap = gif_set_bpf_tap;
gif_init_params.detach = gif_detach;
error = ifnet_allocate(&gif_init_params, &sc->gif_if);
if (error != 0) {
printf("gif_clone_create, ifnet_allocate failed - %d\n", error);
_FREE(sc, M_DEVBUF);
error = ENOBUFS;
goto done;
}
sc->encap_cookie4 = sc->encap_cookie6 = NULL;
#if INET
sc->encap_cookie4 = encap_attach_func(AF_INET, -1,
gif_encapcheck, &in_gif_protosw, sc);
if (sc->encap_cookie4 == NULL) {
printf("%s: unable to attach encap4\n", if_name(sc->gif_if));
ifnet_release(sc->gif_if);
FREE(sc, M_DEVBUF);
error = ENOBUFS;
goto done;
}
#endif
#if INET6
sc->encap_cookie6 = encap_attach_func(AF_INET6, -1,
gif_encapcheck, (struct protosw *)&in6_gif_protosw, sc);
if (sc->encap_cookie6 == NULL) {
if (sc->encap_cookie4) {
encap_detach(sc->encap_cookie4);
sc->encap_cookie4 = NULL;
}
printf("%s: unable to attach encap6\n", if_name(sc->gif_if));
ifnet_release(sc->gif_if);
FREE(sc, M_DEVBUF);
error = ENOBUFS;
goto done;
}
#endif
sc->gif_called = 0;
ifnet_set_mtu(sc->gif_if, GIF_MTU);
ifnet_set_flags(sc->gif_if, IFF_POINTOPOINT | IFF_MULTICAST, 0xffff);
#if 0
sc->gif_if.if_flags |= IFF_LINK2;
#endif
error = ifnet_attach(sc->gif_if, NULL);
if (error != 0) {
printf("gif_clone_create - ifnet_attach failed - %d\n", error);
ifnet_release(sc->gif_if);
if (sc->encap_cookie4) {
encap_detach(sc->encap_cookie4);
sc->encap_cookie4 = NULL;
}
if (sc->encap_cookie6) {
encap_detach(sc->encap_cookie6);
sc->encap_cookie6 = NULL;
}
FREE(sc, M_DEVBUF);
goto done;
}
#if CONFIG_MACF_NET
mac_ifnet_label_init(&sc->gif_if);
#endif
bpfattach(sc->gif_if, DLT_NULL, sizeof (u_int));
TAILQ_INSERT_TAIL(&gifs, sc, gif_link);
ngif++;
done:
lck_mtx_unlock(gif_mtx);
return (error);
}
static int
gif_clone_destroy(struct ifnet *ifp)
{
#if defined(INET) || defined(INET6)
int error = 0;
#endif
struct gif_softc *sc = ifp->if_softc;
lck_mtx_lock(gif_mtx);
TAILQ_REMOVE(&gifs, sc, gif_link);
ngif--;
GIF_LOCK(sc);
gif_delete_tunnel(sc);
#ifdef INET6
if (sc->encap_cookie6 != NULL) {
error = encap_detach(sc->encap_cookie6);
KASSERT(error == 0, ("gif_clone_destroy: Unexpected \
error detaching encap_cookie6"));
}
#endif
#ifdef INET
if (sc->encap_cookie4 != NULL) {
error = encap_detach(sc->encap_cookie4);
KASSERT(error == 0, ("gif_clone_destroy: Unexpected \
error detaching encap_cookie4"));
}
#endif
error = ifnet_set_flags(ifp, 0, IFF_UP);
if (error != 0) {
printf("gif_clone_destroy: ifnet_set_flags failed %d\n", error);
}
error = ifnet_detach(ifp);
if (error != 0)
panic("gif_clone_destroy: ifnet_detach(%p) failed %d\n", ifp,
error);
GIF_UNLOCK(sc);
lck_mtx_unlock(gif_mtx);
return (0);
}
static int
gif_encapcheck(
const struct mbuf *m,
int off,
int proto,
void *arg)
{
int error = 0;
struct ip ip;
struct gif_softc *sc;
sc = (struct gif_softc *)arg;
if (sc == NULL)
return (error);
GIF_LOCK(sc);
if ((ifnet_flags(sc->gif_if) & IFF_UP) == 0)
goto done;
if (!sc->gif_psrc || !sc->gif_pdst)
goto done;
switch (proto) {
#if INET
case IPPROTO_IPV4:
break;
#endif
#if INET6
case IPPROTO_IPV6:
break;
#endif
default:
goto done;
}
mbuf_copydata((struct mbuf *)(size_t)m, 0, sizeof (ip), &ip);
switch (ip.ip_v) {
#if INET
case 4:
if (sc->gif_psrc->sa_family != AF_INET ||
sc->gif_pdst->sa_family != AF_INET)
goto done;
error = gif_encapcheck4(m, off, proto, arg);
#endif
#if INET6
case 6:
if (sc->gif_psrc->sa_family != AF_INET6 ||
sc->gif_pdst->sa_family != AF_INET6)
goto done;
error = gif_encapcheck6(m, off, proto, arg);
#endif
default:
goto done;
}
done:
GIF_UNLOCK(sc);
return (error);
}
static errno_t
gif_output(
ifnet_t ifp,
mbuf_t m)
{
struct gif_softc *sc = ifnet_softc(ifp);
struct sockaddr *gif_psrc;
struct sockaddr *gif_pdst;
int error = 0;
GIF_LOCK(sc);
gif_psrc = sc->gif_psrc;
gif_pdst = sc->gif_pdst;
GIF_UNLOCK(sc);
m->m_flags &= ~(M_BCAST|M_MCAST);
if (!(ifnet_flags(ifp) & IFF_UP) ||
gif_psrc == NULL || gif_pdst == NULL) {
ifnet_touch_lastchange(ifp);
m_freem(m);
error = ENETDOWN;
goto end;
}
bpf_tap_out(ifp, 0, m, &sc->gif_proto, sizeof (sc->gif_proto));
GIF_LOCK(sc);
switch (sc->gif_psrc->sa_family) {
#if INET
case AF_INET:
error = in_gif_output(ifp, sc->gif_proto, m, NULL);
break;
#endif
#if INET6
case AF_INET6:
error = in6_gif_output(ifp, sc->gif_proto, m, NULL);
break;
#endif
default:
error = ENETDOWN;
break;
}
GIF_UNLOCK(sc);
end:
if (error) {
ifnet_stat_increment_out(ifp, 0, 0, 1);
} else {
ifnet_stat_increment_out(ifp, 1, m->m_pkthdr.len, 0);
}
if (error == 0)
error = EJUSTRETURN;
return (error);
}
static errno_t
gif_input(
ifnet_t ifp,
protocol_family_t protocol_family,
mbuf_t m,
__unused char *frame_header)
{
struct gif_softc *sc = ifnet_softc(ifp);
bpf_tap_in(ifp, 0, m, &sc->gif_proto, sizeof (sc->gif_proto));
if (proto_input(protocol_family, m) != 0) {
ifnet_stat_increment_in(ifp, 0, 0, 1);
m_freem(m);
} else
ifnet_stat_increment_in(ifp, 1, m->m_pkthdr.len, 0);
return (0);
}
static errno_t
gif_ioctl(
ifnet_t ifp,
u_long cmd,
void *data)
{
struct gif_softc *sc = ifnet_softc(ifp);
struct ifreq *ifr = (struct ifreq *)data;
int error = 0, size;
struct sockaddr *dst = NULL, *src = NULL;
struct sockaddr *sa;
struct ifnet *ifp2;
struct gif_softc *sc2;
switch (cmd) {
case SIOCSIFADDR:
break;
case SIOCSIFDSTADDR:
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
break;
#ifdef SIOCSIFMTU
case SIOCGIFMTU:
break;
case SIOCSIFMTU:
{
u_int32_t mtu;
mtu = ifr->ifr_mtu;
if (mtu < GIF_MTU_MIN || mtu > GIF_MTU_MAX) {
return (EINVAL);
}
ifnet_set_mtu(ifp, mtu);
}
break;
#endif
case SIOCSIFPHYADDR:
#if INET6
case SIOCSIFPHYADDR_IN6_32:
case SIOCSIFPHYADDR_IN6_64:
#endif
case SIOCSLIFPHYADDR:
switch (cmd) {
#if INET
case SIOCSIFPHYADDR:
src = (struct sockaddr *)
&(((struct in_aliasreq *)data)->ifra_addr);
dst = (struct sockaddr *)
&(((struct in_aliasreq *)data)->ifra_dstaddr);
break;
#endif
#if INET6
case SIOCSIFPHYADDR_IN6_32: {
struct in6_aliasreq_32 *ifra_32 =
(struct in6_aliasreq_32 *)data;
src = (struct sockaddr *)&ifra_32->ifra_addr;
dst = (struct sockaddr *)&ifra_32->ifra_dstaddr;
break;
}
case SIOCSIFPHYADDR_IN6_64: {
struct in6_aliasreq_64 *ifra_64 =
(struct in6_aliasreq_64 *)data;
src = (struct sockaddr *)&ifra_64->ifra_addr;
dst = (struct sockaddr *)&ifra_64->ifra_dstaddr;
break;
}
#endif
case SIOCSLIFPHYADDR:
src = (struct sockaddr *)
&(((struct if_laddrreq *)data)->addr);
dst = (struct sockaddr *)
&(((struct if_laddrreq *)data)->dstaddr);
}
if (src->sa_family != dst->sa_family)
return (EINVAL);
switch (src->sa_family) {
#if INET
case AF_INET:
if (src->sa_len != sizeof (struct sockaddr_in))
return (EINVAL);
break;
#endif
#if INET6
case AF_INET6:
if (src->sa_len != sizeof (struct sockaddr_in6))
return (EINVAL);
break;
#endif
default:
return (EAFNOSUPPORT);
}
switch (dst->sa_family) {
#if INET
case AF_INET:
if (dst->sa_len != sizeof (struct sockaddr_in))
return (EINVAL);
break;
#endif
#if INET6
case AF_INET6:
if (dst->sa_len != sizeof (struct sockaddr_in6))
return (EINVAL);
break;
#endif
default:
return (EAFNOSUPPORT);
}
switch (cmd) {
case SIOCSIFPHYADDR:
if (src->sa_family == AF_INET)
break;
return (EAFNOSUPPORT);
#if INET6
case SIOCSIFPHYADDR_IN6_32:
case SIOCSIFPHYADDR_IN6_64:
if (src->sa_family == AF_INET6)
break;
return (EAFNOSUPPORT);
#endif
case SIOCSLIFPHYADDR:
break;
}
#define GIF_ORDERED_LOCK(sc, sc2) \
if (sc < sc2) { \
GIF_LOCK(sc); \
GIF_LOCK(sc2); \
} else { \
GIF_LOCK(sc2); \
GIF_LOCK(sc); \
}
#define GIF_ORDERED_UNLOCK(sc, sc2) \
if (sc > sc2) { \
GIF_UNLOCK(sc); \
GIF_UNLOCK(sc2); \
} else { \
GIF_UNLOCK(sc2); \
GIF_UNLOCK(sc); \
}
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp2, &ifnet_head, if_link) {
if (strcmp(ifnet_name(ifp2), GIFNAME) != 0)
continue;
sc2 = ifnet_softc(ifp2);
if (sc2 == sc)
continue;
GIF_ORDERED_LOCK(sc, sc2);
if (!sc2->gif_pdst || !sc2->gif_psrc) {
GIF_ORDERED_UNLOCK(sc, sc2);
continue;
}
if (sc2->gif_pdst->sa_family != dst->sa_family ||
sc2->gif_pdst->sa_len != dst->sa_len ||
sc2->gif_psrc->sa_family != src->sa_family ||
sc2->gif_psrc->sa_len != src->sa_len) {
GIF_ORDERED_UNLOCK(sc, sc2);
continue;
}
#ifndef XBONEHACK
if (bcmp(sc2->gif_pdst, dst, dst->sa_len) == 0 &&
bcmp(sc2->gif_psrc, src, src->sa_len) == 0) {
GIF_ORDERED_UNLOCK(sc, sc2);
error = EADDRNOTAVAIL;
ifnet_head_done();
goto bad;
}
#endif
#define multidest(x) \
(((struct sockaddr_in *)(void *)(x))->sin_addr.s_addr == INADDR_ANY)
#if INET6
#define multidest6(x) \
(IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *) \
(void *)(x))->sin6_addr))
#endif
if (dst->sa_family == AF_INET &&
multidest(dst) && multidest(sc2->gif_pdst)) {
GIF_ORDERED_UNLOCK(sc, sc2);
error = EADDRNOTAVAIL;
ifnet_head_done();
goto bad;
}
#if INET6
if (dst->sa_family == AF_INET6 &&
multidest6(dst) && multidest6(sc2->gif_pdst)) {
GIF_ORDERED_UNLOCK(sc, sc2);
error = EADDRNOTAVAIL;
ifnet_head_done();
goto bad;
}
#endif
GIF_ORDERED_UNLOCK(sc, sc2);
}
ifnet_head_done();
GIF_LOCK(sc);
if (sc->gif_psrc)
FREE((caddr_t)sc->gif_psrc, M_IFADDR);
sa = (struct sockaddr *)_MALLOC(src->sa_len, M_IFADDR,
M_WAITOK);
if (sa == NULL) {
GIF_UNLOCK(sc);
return (ENOBUFS);
}
bcopy((caddr_t)src, (caddr_t)sa, src->sa_len);
sc->gif_psrc = sa;
if (sc->gif_pdst)
FREE((caddr_t)sc->gif_pdst, M_IFADDR);
sa = (struct sockaddr *)_MALLOC(dst->sa_len, M_IFADDR,
M_WAITOK);
if (sa == NULL) {
GIF_UNLOCK(sc);
return (ENOBUFS);
}
bcopy((caddr_t)dst, (caddr_t)sa, dst->sa_len);
sc->gif_pdst = sa;
GIF_UNLOCK(sc);
ifnet_set_flags(ifp, IFF_RUNNING | IFF_UP, IFF_RUNNING |
IFF_UP);
error = 0;
break;
#ifdef SIOCDIFPHYADDR
case SIOCDIFPHYADDR:
GIF_LOCK(sc);
if (sc->gif_psrc) {
FREE((caddr_t)sc->gif_psrc, M_IFADDR);
sc->gif_psrc = NULL;
}
if (sc->gif_pdst) {
FREE((caddr_t)sc->gif_pdst, M_IFADDR);
sc->gif_pdst = NULL;
}
GIF_UNLOCK(sc);
break;
#endif
case SIOCGIFPSRCADDR:
#if INET6
case SIOCGIFPSRCADDR_IN6:
#endif
GIF_LOCK(sc);
if (sc->gif_psrc == NULL) {
GIF_UNLOCK(sc);
error = EADDRNOTAVAIL;
goto bad;
}
src = sc->gif_psrc;
switch (cmd) {
#if INET
case SIOCGIFPSRCADDR:
dst = &ifr->ifr_addr;
size = sizeof (ifr->ifr_addr);
break;
#endif
#if INET6
case SIOCGIFPSRCADDR_IN6:
dst = (struct sockaddr *)
&(((struct in6_ifreq *)data)->ifr_addr);
size = sizeof (((struct in6_ifreq *)data)->ifr_addr);
break;
#endif
default:
GIF_UNLOCK(sc);
error = EADDRNOTAVAIL;
goto bad;
}
if (src->sa_len > size) {
GIF_UNLOCK(sc);
return (EINVAL);
}
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
GIF_UNLOCK(sc);
break;
case SIOCGIFPDSTADDR:
#if INET6
case SIOCGIFPDSTADDR_IN6:
#endif
GIF_LOCK(sc);
if (sc->gif_pdst == NULL) {
GIF_UNLOCK(sc);
error = EADDRNOTAVAIL;
goto bad;
}
src = sc->gif_pdst;
switch (cmd) {
#if INET
case SIOCGIFPDSTADDR:
dst = &ifr->ifr_addr;
size = sizeof (ifr->ifr_addr);
break;
#endif
#if INET6
case SIOCGIFPDSTADDR_IN6:
dst = (struct sockaddr *)
&(((struct in6_ifreq *)data)->ifr_addr);
size = sizeof (((struct in6_ifreq *)data)->ifr_addr);
break;
#endif
default:
error = EADDRNOTAVAIL;
GIF_UNLOCK(sc);
goto bad;
}
if (src->sa_len > size) {
GIF_UNLOCK(sc);
return (EINVAL);
}
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
GIF_UNLOCK(sc);
break;
case SIOCGLIFPHYADDR:
GIF_LOCK(sc);
if (sc->gif_psrc == NULL || sc->gif_pdst == NULL) {
GIF_UNLOCK(sc);
error = EADDRNOTAVAIL;
goto bad;
}
src = sc->gif_psrc;
dst = (struct sockaddr *)
&(((struct if_laddrreq *)data)->addr);
size = sizeof (((struct if_laddrreq *)data)->addr);
if (src->sa_len > size) {
GIF_UNLOCK(sc);
return (EINVAL);
}
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
src = sc->gif_pdst;
dst = (struct sockaddr *)
&(((struct if_laddrreq *)data)->dstaddr);
size = sizeof (((struct if_laddrreq *)data)->dstaddr);
if (src->sa_len > size) {
GIF_UNLOCK(sc);
return (EINVAL);
}
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
GIF_UNLOCK(sc);
break;
case SIOCSIFFLAGS:
break;
default:
error = EOPNOTSUPP;
break;
}
bad:
return (error);
}
static void
gif_delete_tunnel(struct gif_softc *sc)
{
GIF_LOCK_ASSERT(sc);
if (sc->gif_psrc) {
FREE((caddr_t)sc->gif_psrc, M_IFADDR);
sc->gif_psrc = NULL;
}
if (sc->gif_pdst) {
FREE((caddr_t)sc->gif_pdst, M_IFADDR);
sc->gif_pdst = NULL;
}
ROUTE_RELEASE(&sc->gif_ro);
}