*
* @APPLE_LICENSE_HEADER_END@
*/
-/* $KAME: if_gif.c,v 1.15 2000/02/22 14:01:46 itojun Exp $ */
+/* $FreeBSD: src/sys/net/if_gif.c,v 1.4.2.6 2001/07/24 19:10:18 brooks Exp $ */
+/* $KAME: if_gif.c,v 1.47 2001/05/01 05:28:42 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* SUCH DAMAGE.
*/
-/*
- * gif.c
- */
-#if BSD310
-#include "opt_inet.h"
-#endif
-
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.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/route.h>
#include <net/bpf.h>
-#if INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
-#include <netinet/in_var.h>
#include <netinet/ip.h>
+#if INET
+#include <netinet/in_var.h>
#include <netinet/in_gif.h>
+#include <netinet/ip_var.h>
#endif /* INET */
#if INET6
-#ifndef INET
-#include <netinet/in.h>
-#endif
#include <netinet6/in6_var.h>
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#include <net/dlil.h>
#include <net/if_gif.h>
-#include "gif.h"
-#include "bpfilter.h"
-
#include <net/net_osdep.h>
-#if NGIF > 0
+#define GIFNAME "gif"
+#define GIFDEV "if_gif"
+#define GIF_MAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */
-void gifattach __P((void *));
+#ifndef __APPLE__
+static MALLOC_DEFINE(M_GIF, "gif", "Generic Tunnel Interface");
+#endif
+
+TAILQ_HEAD(gifhead, gif_softc) gifs = TAILQ_HEAD_INITIALIZER(gifs);
+
+#ifdef __APPLE__
+void gifattach __P((void));
int gif_pre_output __P((struct ifnet *, register struct mbuf **, struct sockaddr *,
- register struct rtentry *, char *, char *, u_long));
+ caddr_t, char *, char *, u_long));
+static void gif_create_dev(void);
+static int gif_encapcheck(const struct mbuf*, int, int, void*);
+
+
+int ngif = 0; /* number of interfaces */
+#endif
+
+#if INET
+struct protosw in_gif_protosw =
+{ SOCK_RAW, 0, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR,
+ in_gif_input, 0, 0, 0,
+ 0,
+ 0, 0, 0, 0,
+ 0,
+ &rip_usrreqs
+};
+#endif
+#if INET6
+struct ip6protosw in6_gif_protosw =
+{ SOCK_RAW, 0, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR,
+ in6_gif_input,
+ 0, 0, 0,
+ 0,
+ 0, 0, 0, 0,
+ 0,
+ &rip6_usrreqs
+};
+#endif
-/*
- * gif global variable definitions
- */
-int ngif = NGIF; /* number of interfaces */
-struct gif_softc *gif = 0;
-static struct if_proto *gif_array[NGIF];
-static gif_count = 0 ;
#ifndef MAX_GIF_NEST
/*
* This macro controls the upper limitation on nesting of gif tunnels.
-#if 0
+#ifdef __APPLE__
+/*
+ * Theory of operation: initially, one gif interface is created.
+ * Any time a gif interface is configured, if there are no other
+ * unconfigured gif interfaces, a new gif interface is created.
+ * BSD uses the clone mechanism to dynamically create more
+ * gif interfaces.
+ *
+ * We have some extra glue to support DLIL.
+ */
+
+/* GIF interface module support */
int gif_demux(ifp, m, frame_header, proto)
struct ifnet *ifp;
struct mbuf *m;
char *frame_header;
struct if_proto **proto;
{
- int i;
- return 0;
+ struct gif_softc* gif = (struct gif_softc*)ifp->if_softc;
+
+ /* Only one protocol may be attached to a gif interface. */
+ *proto = gif->gif_proto;
+
+ return 0;
}
-int gif_framer(ifp, m, dest, dest_linkaddr, frame_type)
- struct ifnet *ifp;
- struct mbuf **m;
- struct sockaddr *dest;
- char *dest_linkaddr;
- char *frame_type;
-
-{
- char *to_ptr;
-
- return 0;
-}
-#endif
static
int gif_add_if(struct ifnet *ifp)
-{
- ifp->if_demux = 0;
+{
+ ifp->if_demux = gif_demux;
ifp->if_framer = 0;
return 0;
}
-
+
static
int gif_del_if(struct ifnet *ifp)
{
static
int gif_add_proto(struct ddesc_head_str *desc_head, struct if_proto *proto, u_long dl_tag)
-{
- int i;
-
- for (i=0; i < gif_count; i++)
- if (gif_array[i] == 0) {
- gif_array[gif_count] = proto;
- return 0;
- }
+{
+ /* Only one protocol may be attached at a time */
+ struct gif_softc* gif = (struct gif_softc*)proto->ifp;
- if ((i == gif_count) && (gif_count == NGIF))
- panic("gif_add_proto -- Too many attachments\n");
+ if (gif->gif_proto != NULL)
+ printf("gif_add_proto: request add_proto for gif%d\n", gif->gif_if.if_unit);
- gif_array[gif_count++] = proto;
+ gif->gif_proto = proto;
- return (0);
+ return 0;
}
static
int gif_del_proto(struct if_proto *proto, u_long dl_tag)
-{
- int i;
-
- for (i=0; i < gif_count; i++)
- if (gif_array[i] == proto) {
- gif_array[i] = 0;
- return 0;
- }
+{
+ if (((struct gif_softc*)proto->ifp)->gif_proto == proto)
+ ((struct gif_softc*)proto->ifp)->gif_proto = NULL;
+ else
+ return ENOENT;
- return ENOENT;
+ return 0;
}
int gif_shutdown()
{
- return 0;
+ return 0;
}
void gif_reg_if_mods()
{
struct dlil_ifmod_reg_str gif_ifmod;
+ bzero(&gif_ifmod, sizeof(gif_ifmod));
gif_ifmod.add_if = gif_add_if;
gif_ifmod.del_if = gif_del_if;
gif_ifmod.add_proto = gif_add_proto;
if (dlil_reg_if_modules(APPLE_IF_FAM_GIF, &gif_ifmod))
panic("Couldn't register gif modules\n");
-}
+}
-u_long gif_attach_inet(struct ifnet *ifp)
+/* Glue code to attach inet to a gif interface through DLIL */
+
+u_long gif_attach_proto_family(struct ifnet *ifp, int af)
{
struct dlil_proto_reg_str reg;
struct dlil_demux_desc desc;
u_long dl_tag=0;
short native=0;
- int stat;
- int i;
-
- for (i=0; i < gif_count; i++) {
- if (gif_array[i] && (gif_array[i]->ifp == ifp) &&
- (gif_array[i]->protocol_family == PF_INET)) {
-#if 0
- kprintf("gif_attach for %s%d found dl_tag=%d\n",
- ifp->if_name, ifp->if_unit, gif_array[i]->dl_tag);
-#endif
- return gif_array[i]->dl_tag;
-
- }
- }
+ int stat;
+
+ /* Check if we're already attached */
+ stat = dlil_find_dltag(ifp->if_family, ifp->if_unit, af, &dl_tag);
+ if (stat == 0)
+ return dl_tag;
TAILQ_INIT(®.demux_desc_head);
desc.type = DLIL_DESC_RAW;
reg.pre_output = gif_pre_output;
reg.event = 0;
reg.offer = 0;
- reg.ioctl = gif_ioctl;
+ reg.ioctl = 0;
reg.default_proto = 0;
- reg.protocol_family = PF_INET;
+ reg.protocol_family = af;
stat = dlil_attach_protocol(®, &dl_tag);
if (stat) {
- panic("gif_attach_inet can't attach interface\n");
+ panic("gif_attach_proto_family can't attach interface fam=%d\n", af);
}
return dl_tag;
}
+u_long gif_detach_proto_family(struct ifnet *ifp, int af)
+{
+ u_long ip_dl_tag = 0;
+ int stat;
+
+ stat = dlil_find_dltag(ifp->if_family, ifp->if_unit, af, &ip_dl_tag);
+ if (stat == 0) {
+ stat = dlil_detach_protocol(ip_dl_tag);
+ if (stat) {
+ printf("WARNING: gif_detach can't detach IP fam=%d from interface\n", af);
+ }
+ }
+ return (stat);
+}
+
+#endif
+
+/* Function to setup the first gif interface */
void
-gifattach(dummy)
- void *dummy;
+gifattach(void)
{
- register struct gif_softc *sc;
- register int i;
+ /* Init the list of interfaces */
+ TAILQ_INIT(&gifs);
gif_reg_if_mods(); /* DLIL modules */
- gif = sc = _MALLOC (ngif * sizeof(struct gif_softc), M_DEVBUF, M_WAITOK);
- bzero(sc, ngif * sizeof(struct gif_softc));
- for (i = 0; i < ngif; sc++, i++) {
- sc->gif_if.if_name = "gif";
- sc->gif_if.if_unit = i;
- sc->gif_if.if_family = APPLE_IF_FAM_GIF;
- sc->gif_if.if_mtu = GIF_MTU;
- sc->gif_if.if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
- sc->gif_if.if_ioctl = gif_ioctl;
- sc->gif_if.if_output = NULL;
- sc->gif_if.if_type = IFT_GIF;
- dlil_if_attach(&sc->gif_if);
+ /* Create first device */
+ gif_create_dev();
+}
+
+/* Creates another gif device if there are none free */
+static void
+gif_create_dev(void)
+{
+ struct gif_softc *sc;
+
+
+ /* Can't create more than GIF_MAXUNIT */
+ if (ngif >= GIF_MAXUNIT)
+ return;
+
+ /* Check for unused gif interface */
+ TAILQ_FOREACH(sc, &gifs, gif_link) {
+ /* If unused, return, no need to create a new interface */
+ if ((sc->gif_if.if_flags & IFF_RUNNING) == 0)
+ return;
+ }
+
+ sc = _MALLOC(sizeof(struct gif_softc), M_DEVBUF, M_WAITOK);
+ if (sc == NULL) {
+ log(LOG_ERR, "gifattach: failed to allocate gif%d\n", ngif);
+ return;
+ }
+
+ bzero(sc, sizeof(struct gif_softc));
+ sc->gif_if.if_softc = sc;
+ sc->gif_if.if_name = GIFNAME;
+ sc->gif_if.if_unit = ngif;
+
+ sc->encap_cookie4 = sc->encap_cookie6 = NULL;
+#ifdef 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));
+ FREE(sc, M_DEVBUF);
+ return;
+ }
+#endif
+#ifdef 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));
+ FREE(sc, M_DEVBUF);
+ return;
+ }
+#endif
+
+ sc->gif_if.if_family= APPLE_IF_FAM_GIF;
+ sc->gif_if.if_mtu = GIF_MTU;
+ sc->gif_if.if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
#if 0
- kprintf("gifattach: Attaching gif%d sc=%x gif_if=%x\n", i, sc, &sc->gif_if);
+ /* turn off ingress filter */
+ sc->gif_if.if_flags |= IFF_LINK2;
#endif
-#if NBPFILTER > 0
-#ifdef HAVE_OLD_BPF
- bpfattach(&sc->gif_if, DLT_NULL, sizeof(u_int));
-#else
- bpfattach(&sc->gif_if.if_bpf, &sc->gif_if, DLT_NULL, sizeof(u_int));
+ sc->gif_if.if_ioctl = gif_ioctl;
+ sc->gif_if.if_output = NULL; /* pre_output returns error or EJUSTRETURN */
+ sc->gif_if.if_type = IFT_GIF;
+ dlil_if_attach(&sc->gif_if);
+ bpfattach(&sc->gif_if, DLT_NULL, sizeof(u_int));
+ TAILQ_INSERT_TAIL(&gifs, sc, gif_link);
+ ngif++;
+}
+
+static int
+gif_encapcheck(m, off, proto, arg)
+ const struct mbuf *m;
+ int off;
+ int proto;
+ void *arg;
+{
+ struct ip ip;
+ struct gif_softc *sc;
+
+ sc = (struct gif_softc *)arg;
+ if (sc == NULL)
+ return 0;
+
+ if ((sc->gif_if.if_flags & IFF_UP) == 0)
+ return 0;
+
+ /* no physical address */
+ if (!sc->gif_psrc || !sc->gif_pdst)
+ return 0;
+
+ switch (proto) {
+#if INET
+ case IPPROTO_IPV4:
+ break;
#endif
+#if INET6
+ case IPPROTO_IPV6:
+ break;
#endif
+ default:
+ return 0;
}
-}
-#ifdef __FreeBSD__
-PSEUDO_SET(gifattach, if_gif);
+ /* LINTED const cast */
+ m_copydata((struct mbuf *)m, 0, sizeof(ip), (caddr_t)&ip);
+
+ switch (ip.ip_v) {
+#if INET
+ case 4:
+ if (sc->gif_psrc->sa_family != AF_INET ||
+ sc->gif_pdst->sa_family != AF_INET)
+ return 0;
+ return 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)
+ return 0;
+ return gif_encapcheck6(m, off, proto, arg);
#endif
+ default:
+ return 0;
+ }
+}
int
gif_pre_output(ifp, m0, dst, rt, frame, address, dl_tag)
struct ifnet *ifp;
struct mbuf **m0;
struct sockaddr *dst;
- struct rtentry *rt; /* added in net2 */
+ caddr_t rt;
char *frame;
char *address;
u_long dl_tag;
{
- register struct gif_softc *sc = (struct gif_softc*)ifp;
+ struct gif_softc *sc = (struct gif_softc*)ifp;
register struct mbuf * m = *m0;
int error = 0;
static int called = 0; /* XXX: MUTEX */
log(LOG_NOTICE,
"gif_output: recursively called too many times(%d)\n",
called);
- m_freem(m);
error = EIO; /* is there better errno? */
goto end;
}
getmicrotime(&ifp->if_lastchange);
m->m_flags &= ~(M_BCAST|M_MCAST);
if (!(ifp->if_flags & IFF_UP) ||
-#if 0
- sc->gif_flags & GIFF_INUSE ||
-#endif
sc->gif_psrc == NULL || sc->gif_pdst == NULL) {
- m_freem(m);
error = ENETDOWN;
- printf("gif_output: packed discarded ENETDOWN\n");
goto end;
}
-#if NBPFILTER > 0
if (ifp->if_bpf) {
/*
* We need to prepend the address family as
* try to free it or keep a pointer a to it).
*/
struct mbuf m0;
- u_int af = dst->sa_family;
+ u_int32_t af = dst->sa_family;
m0.m_next = m;
m0.m_len = 4;
m0.m_data = (char *)⁡
-#ifdef HAVE_OLD_BPF
bpf_mtap(ifp, &m0);
-#else
- bpf_mtap(ifp->if_bpf, &m0);
-#endif
}
-#endif
ifp->if_opackets++;
ifp->if_obytes += m->m_pkthdr.len;
-#if 0
- s = splnet();
- sc->gif_flags |= GIFF_INUSE;
-#endif
+ /* inner AF-specific encapsulation */
+
+ /* XXX should we check if our outer source is legal? */
+
+ /* dispatch to output logic based on outer AF */
switch (sc->gif_psrc->sa_family) {
#if INET
case AF_INET:
- error = in_gif_output(ifp, dst->sa_family, m, rt);
- if (error)
- printf("in_gif_output returned error=%d\n", error);
+ error = in_gif_output(ifp, dst->sa_family, m, (struct rtentry*)rt);
break;
#endif
#if INET6
case AF_INET6:
- error = in6_gif_output(ifp, dst->sa_family, m, rt);
- if (error)
- printf("in6_gif_output returned error=%d\n", error);
+ error = in6_gif_output(ifp, dst->sa_family, m, (struct rtentry*)rt);
break;
#endif
default:
- m_freem(m);
error = ENETDOWN;
+ goto end;
}
-#if 0
- sc->gif_flags &= ~GIFF_INUSE;
- splx(s);
-#endif
end:
called = 0; /* reset recursion counter */
- if (error) ifp->if_oerrors++;
- return EJUSTRETURN;
+ if (error)
+ ifp->if_oerrors++;
+ if (error == 0)
+ error = EJUSTRETURN; /* if no error, packet got sent already */
+ return error;
}
-void
-gif_input(m, af, gifp)
+int
+gif_input(m, frame_header, gifp, dl_tag, sync_ok)
struct mbuf *m;
- int af;
- struct ifnet *gifp;
+ char* frame_header;
+ struct ifnet* gifp;
+ u_long dl_tag;
+ int sync_ok;
{
int s, isr;
- register struct ifqueue *ifq = 0;
+ struct ifqueue *ifq = 0;
+ int af;
if (gifp == NULL) {
/* just in case */
return;
}
+ /* Assume packet is of type of protocol attached to this interface */
+ af = ((struct gif_softc*)(gifp->if_softc))->gif_proto->protocol_family;
+
if (m->m_pkthdr.rcvif)
m->m_pkthdr.rcvif = gifp;
-#if NBPFILTER > 0
if (gifp->if_bpf) {
/*
* We need to prepend the address family as
* try to free it or keep a pointer a to it).
*/
struct mbuf m0;
- u_int af = AF_INET6;
+ u_int32_t af1 = af;
m0.m_next = m;
m0.m_len = 4;
- m0.m_data = (char *)⁡
+ m0.m_data = (char *)&af1;
-#ifdef HAVE_OLD_BPF
bpf_mtap(gifp, &m0);
-#else
- bpf_mtap(gifp->if_bpf, &m0);
-#endif
}
-#endif /*NBPFILTER > 0*/
/*
* Put the packet to the network layer input queue according to the
#endif
default:
m_freem(m);
- return;
+ return (EJUSTRETURN);
}
s = splimp();
IF_DROP(ifq); /* update statistics */
m_freem(m);
splx(s);
- return;
+ return (EJUSTRETURN);
}
IF_ENQUEUE(ifq, m);
/* we need schednetisr since the address family may change */
gifp->if_ibytes += m->m_pkthdr.len;
splx(s);
- return;
+ return (0);
}
/* XXX how should we handle IPv6 scope on SIOC[GS]IFPHYADDR? */
gif_ioctl(ifp, cmd, data)
struct ifnet *ifp;
u_long cmd;
- caddr_t data;
+ void* data;
{
struct gif_softc *sc = (struct gif_softc*)ifp;
struct ifreq *ifr = (struct ifreq*)data;
int error = 0, size;
struct sockaddr *dst, *src;
- int i;
+ struct sockaddr *sa;
+ int s;
+ struct ifnet *ifp2;
struct gif_softc *sc2;
switch (cmd) {
case SIOCADDMULTI:
case SIOCDELMULTI:
- /* Called from if_addmulti() with data == NULL if __FreeBSD__ >= 3 */
-#if !defined(__APPLE__)
- switch (ifr->ifr_addr.sa_family) {
-#ifdef INET
- case AF_INET: /* IP supports Multicast */
- break;
-#endif /* INET */
-#ifdef INET6
- case AF_INET6: /* IP6 supports Multicast */
- break;
-#endif /* INET6 */
- default: /* Other protocols doesn't support Multicast */
- error = EAFNOSUPPORT;
- break;
- }
-#endif /*not FreeBSD3*/
break;
#ifdef SIOCSIFMTU /* xxx */
-#ifndef __OpenBSD__
case SIOCGIFMTU:
break;
+
case SIOCSIFMTU:
{
-#ifdef __bsdi__
- short mtu;
- mtu = *(short *)ifr->ifr_data;
-#else
u_long mtu;
mtu = ifr->ifr_mtu;
-#endif
if (mtu < GIF_MTU_MIN || mtu > GIF_MTU_MAX) {
return (EINVAL);
}
ifp->if_mtu = mtu;
}
break;
-#endif
#endif /* SIOCSIFMTU */
case SIOCSIFPHYADDR:
#if INET6
case SIOCSIFPHYADDR_IN6:
#endif /* INET6 */
- /* can't configure same pair of address onto two gif */
- src = (struct sockaddr *)
- &(((struct in_aliasreq *)data)->ifra_addr);
- dst = (struct sockaddr *)
- &(((struct in_aliasreq *)data)->ifra_dstaddr);
- for (i = 0; i < ngif; i++) {
- sc2 = gif + i;
+ 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:
+ src = (struct sockaddr *)
+ &(((struct in6_aliasreq *)data)->ifra_addr);
+ dst = (struct sockaddr *)
+ &(((struct in6_aliasreq *)data)->ifra_dstaddr);
+ break;
+#endif
+ case SIOCSLIFPHYADDR:
+ src = (struct sockaddr *)
+ &(((struct if_laddrreq *)data)->addr);
+ dst = (struct sockaddr *)
+ &(((struct if_laddrreq *)data)->dstaddr);
+ }
+
+ /* sa_family must be equal */
+ if (src->sa_family != dst->sa_family)
+ return EINVAL;
+
+ /* validate sa_len */
+ 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;
+ }
+
+ /* check sa_family looks sane for the cmd */
+ switch (cmd) {
+ case SIOCSIFPHYADDR:
+ if (src->sa_family == AF_INET)
+ break;
+ return EAFNOSUPPORT;
+#if INET6
+ case SIOCSIFPHYADDR_IN6:
+ if (src->sa_family == AF_INET6)
+ break;
+ return EAFNOSUPPORT;
+#endif /* INET6 */
+ case SIOCSLIFPHYADDR:
+ /* checks done in the above */
+ break;
+ }
+
+ TAILQ_FOREACH(ifp2, &ifnet, if_link) {
+ if (strcmp(ifp2->if_name, GIFNAME) != 0)
+ continue;
+ sc2 = ifp2->if_softc;
if (sc2 == sc)
continue;
if (!sc2->gif_pdst || !sc2->gif_psrc)
continue;
- if (sc2->gif_pdst->sa_family == dst->sa_family &&
- sc2->gif_pdst->sa_len == dst->sa_family &&
- bcmp(sc2->gif_pdst, dst, dst->sa_len) == 0 &&
- sc2->gif_psrc->sa_family == src->sa_family &&
- sc2->gif_psrc->sa_len == src->sa_family &&
+ 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)
+ continue;
+#ifndef XBONEHACK
+ /* can't configure same pair of address onto two gifs */
+ if (bcmp(sc2->gif_pdst, dst, dst->sa_len) == 0 &&
bcmp(sc2->gif_psrc, src, src->sa_len) == 0) {
error = EADDRNOTAVAIL;
goto bad;
}
- }
+#endif
- switch (ifr->ifr_addr.sa_family) {
-#if INET
- case AF_INET:
- return in_gif_ioctl(ifp, cmd, data);
-#endif /* INET */
+ /* can't configure multiple multi-dest interfaces */
+#define multidest(x) \
+ (((struct sockaddr_in *)(x))->sin_addr.s_addr == INADDR_ANY)
#if INET6
- case AF_INET6:
- return in6_gif_ioctl(ifp, cmd, data);
-#endif /* INET6 */
- default:
- error = EPROTOTYPE;
- goto bad;
- break;
+#define multidest6(x) \
+ (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)(x))->sin6_addr))
+#endif
+ if (dst->sa_family == AF_INET &&
+ multidest(dst) && multidest(sc2->gif_pdst)) {
+ error = EADDRNOTAVAIL;
+ goto bad;
+ }
+#if INET6
+ if (dst->sa_family == AF_INET6 &&
+ multidest6(dst) && multidest6(sc2->gif_pdst)) {
+ error = EADDRNOTAVAIL;
+ goto bad;
+ }
+#endif
}
+
+ if (sc->gif_psrc)
+ FREE((caddr_t)sc->gif_psrc, M_IFADDR);
+ sa = (struct sockaddr *)_MALLOC(src->sa_len, M_IFADDR, M_WAITOK);
+ 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);
+ bcopy((caddr_t)dst, (caddr_t)sa, dst->sa_len);
+ sc->gif_pdst = sa;
+
+ ifp->if_flags |= IFF_RUNNING;
+
+ gif_attach_proto_family(ifp, src->sa_family);
+
+ s = splimp();
+ if_up(ifp); /* mark interface UP and send up RTM_IFINFO */
+#ifdef __APPLE__
+ /* Make sure at least one unused device is still available */
+ gif_create_dev();
+#endif
+ splx(s);
+
+ error = 0;
break;
+
+#ifdef SIOCDIFPHYADDR
+ case SIOCDIFPHYADDR:
+ 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;
+ }
+ /* change the IFF_{UP, RUNNING} flag as well? */
+ break;
+#endif
case SIOCGIFPSRCADDR:
#if INET6
goto bad;
}
src = sc->gif_psrc;
- switch (sc->gif_psrc->sa_family) {
+ switch (cmd) {
#if INET
- case AF_INET:
+ case SIOCGIFPSRCADDR:
dst = &ifr->ifr_addr;
- size = sizeof(struct sockaddr_in);
+ size = sizeof(ifr->ifr_addr);
break;
#endif /* INET */
#if INET6
- case AF_INET6:
+ case SIOCGIFPSRCADDR_IN6:
dst = (struct sockaddr *)
&(((struct in6_ifreq *)data)->ifr_addr);
- size = sizeof(struct sockaddr_in6);
+ size = sizeof(((struct in6_ifreq *)data)->ifr_addr);
break;
#endif /* INET6 */
default:
error = EADDRNOTAVAIL;
goto bad;
}
- bcopy((caddr_t)src, (caddr_t)dst, size);
+ if (src->sa_len > size)
+ return EINVAL;
+ bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
break;
case SIOCGIFPDSTADDR:
goto bad;
}
src = sc->gif_pdst;
- switch (sc->gif_pdst->sa_family) {
+ switch (cmd) {
#if INET
- case AF_INET:
+ case SIOCGIFPDSTADDR:
dst = &ifr->ifr_addr;
- size = sizeof(struct sockaddr_in);
+ size = sizeof(ifr->ifr_addr);
break;
#endif /* INET */
#if INET6
- case AF_INET6:
+ case SIOCGIFPDSTADDR_IN6:
dst = (struct sockaddr *)
&(((struct in6_ifreq *)data)->ifr_addr);
- size = sizeof(struct sockaddr_in6);
+ size = sizeof(((struct in6_ifreq *)data)->ifr_addr);
break;
#endif /* INET6 */
default:
error = EADDRNOTAVAIL;
goto bad;
}
- bcopy((caddr_t)src, (caddr_t)dst, size);
+ if (src->sa_len > size)
+ return EINVAL;
+ bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
break;
- case SIOCSIFFLAGS:
- if (sc->gif_psrc == NULL)
- break;
- switch (sc->gif_psrc->sa_family) {
-#if INET
- case AF_INET:
- return in_gif_ioctl(ifp, cmd, data);
-#endif /* INET */
-#if INET6
- case AF_INET6:
- return in6_gif_ioctl(ifp, cmd, data);
-#endif /* INET6 */
- default:
- error = EPROTOTYPE;
+ case SIOCGLIFPHYADDR:
+ if (sc->gif_psrc == NULL || sc->gif_pdst == NULL) {
+ error = EADDRNOTAVAIL;
goto bad;
- break;
}
+
+ /* copy src */
+ src = sc->gif_psrc;
+ dst = (struct sockaddr *)
+ &(((struct if_laddrreq *)data)->addr);
+ size = sizeof(((struct if_laddrreq *)data)->addr);
+ if (src->sa_len > size)
+ return EINVAL;
+ bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
+
+ /* copy dst */
+ src = sc->gif_pdst;
+ dst = (struct sockaddr *)
+ &(((struct if_laddrreq *)data)->dstaddr);
+ size = sizeof(((struct if_laddrreq *)data)->dstaddr);
+ if (src->sa_len > size)
+ return EINVAL;
+ bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
+ break;
+
+ case SIOCSIFFLAGS:
+ /* if_ioctl() takes care of it */
break;
default:
- error = EINVAL;
+ error = EOPNOTSUPP;
break;
}
bad:
return error;
}
-#endif /*NGIF > 0*/
+
+void
+gif_delete_tunnel(sc)
+ struct gif_softc *sc;
+{
+ /* XXX: NetBSD protects this function with splsoftnet() */
+
+ 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;
+ }
+ /* change the IFF_UP flag as well? */
+}
projects / apple / xnu.git / blobdiff