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-rw-r--r--sys/net/if_gif.c290
-rw-r--r--sys/net/if_gif.h6
-rw-r--r--sys/netinet/in_gif.c118
-rw-r--r--sys/netinet/in_gif.h3
-rw-r--r--sys/netinet6/in6_gif.c126
-rw-r--r--sys/netinet6/in6_gif.h3
6 files changed, 356 insertions, 190 deletions
diff --git a/sys/net/if_gif.c b/sys/net/if_gif.c
index 43bf0f4..110210c 100644
--- a/sys/net/if_gif.c
+++ b/sys/net/if_gif.c
@@ -98,29 +98,6 @@ struct if_clone gif_cloner = IF_CLONE_INITIALIZER("gif",
gif_clone_create, gif_clone_destroy, 0, IF_MAXUNIT);
static int gifmodevent(module_t, int, void *);
-void gif_delete_tunnel(struct gif_softc *);
-static int gif_encapcheck(const struct mbuf *, int, int, void *);
-
-#ifdef INET
-extern struct domain inetdomain;
-struct protosw in_gif_protosw =
-{ SOCK_RAW, &inetdomain, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR,
- in_gif_input, (pr_output_t*)rip_output, 0, rip_ctloutput,
- 0,
- 0, 0, 0, 0,
- &rip_usrreqs
-};
-#endif
-#ifdef INET6
-extern struct domain inet6domain;
-struct ip6protosw in6_gif_protosw =
-{ SOCK_RAW, &inet6domain, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR,
- in6_gif_input, rip6_output, 0, rip6_ctloutput,
- 0,
- 0, 0, 0, 0,
- &rip6_usrreqs
-};
-#endif
SYSCTL_DECL(_net_link);
SYSCTL_NODE(_net_link, IFT_GIF, gif, CTLFLAG_RW, 0,
@@ -167,30 +144,20 @@ gif_clone_create(ifc, unit)
sc->gif_if.if_name = GIFNAME;
sc->gif_if.if_unit = unit;
+ gifattach0(sc);
+
+ LIST_INSERT_HEAD(&gif_softc_list, sc, gif_list);
+ return (0);
+}
+
+void
+gifattach0(sc)
+ struct gif_softc *sc;
+{
+
sc->encap_cookie4 = sc->encap_cookie6 = NULL;
-#ifdef INET
- sc->encap_cookie4 = encap_attach_func(AF_INET, -1,
- gif_encapcheck, (struct protosw*)&in_gif_protosw, sc);
- if (sc->encap_cookie4 == NULL) {
- printf("%s: unable to attach encap4\n", if_name(&sc->gif_if));
- free(sc, M_GIF);
- return (EIO); /* XXX */
- }
-#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_GIF);
- return (EIO); /* XXX */
- }
-#endif
+ sc->gif_if.if_addrlen = 0;
sc->gif_if.if_mtu = GIF_MTU;
sc->gif_if.if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
#if 0
@@ -205,8 +172,6 @@ gif_clone_create(ifc, unit)
bpfattach(&sc->gif_if, DLT_NULL, sizeof(u_int));
if (ng_gif_attach_p != NULL)
(*ng_gif_attach_p)(&sc->gif_if);
- LIST_INSERT_HEAD(&gif_softc_list, sc, gif_link);
- return (0);
}
void
@@ -216,16 +181,20 @@ gif_clone_destroy(ifp)
int err;
struct gif_softc *sc = ifp->if_softc;
- gif_delete_tunnel(sc);
- LIST_REMOVE(sc, gif_link);
- if (sc->encap_cookie4 != NULL) {
- err = encap_detach(sc->encap_cookie4);
- KASSERT(err == 0, ("Unexpected error detaching encap_cookie4"));
- }
+ gif_delete_tunnel(&sc->gif_if);
+ LIST_REMOVE(sc, gif_list);
+#ifdef INET6
if (sc->encap_cookie6 != NULL) {
err = encap_detach(sc->encap_cookie6);
KASSERT(err == 0, ("Unexpected error detaching encap_cookie6"));
}
+#endif
+#ifdef INET
+ if (sc->encap_cookie4 != NULL) {
+ err = encap_detach(sc->encap_cookie4);
+ KASSERT(err == 0, ("Unexpected error detaching encap_cookie4"));
+ }
+#endif
if (ng_gif_detach_p != NULL)
(*ng_gif_detach_p)(ifp);
@@ -275,7 +244,7 @@ static moduledata_t gif_mod = {
DECLARE_MODULE(if_gif, gif_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
MODULE_VERSION(if_gif, 1);
-static int
+int
gif_encapcheck(m, off, proto, arg)
const struct mbuf *m;
int off;
@@ -321,6 +290,8 @@ gif_encapcheck(m, off, proto, arg)
#endif
#ifdef INET6
case 6:
+ if (m->m_pkthdr.len < sizeof(struct ip6_hdr))
+ return 0;
if (sc->gif_psrc->sa_family != AF_INET6 ||
sc->gif_pdst->sa_family != AF_INET6)
return 0;
@@ -520,12 +491,10 @@ gif_ioctl(ifp, cmd, data)
struct ifreq *ifr = (struct ifreq*)data;
int error = 0, size;
struct sockaddr *dst, *src;
- struct sockaddr *sa;
- struct ifnet *ifp2;
- struct gif_softc *sc2;
switch (cmd) {
case SIOCSIFADDR:
+ ifp->if_flags |= IFF_UP;
break;
case SIOCSIFDSTADDR:
@@ -578,9 +547,9 @@ gif_ioctl(ifp, cmd, data)
&(((struct if_laddrreq *)data)->addr);
dst = (struct sockaddr *)
&(((struct if_laddrreq *)data)->dstaddr);
+ break;
default:
- error = EADDRNOTAVAIL;
- goto bad;
+ return EINVAL;
}
/* sa_family must be equal */
@@ -638,80 +607,12 @@ gif_ioctl(ifp, cmd, data)
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_len ||
- sc2->gif_psrc->sa_family != src->sa_family ||
- sc2->gif_psrc->sa_len != src->sa_len)
- continue;
-
- /*
- * Disallow parallel tunnels unless instructed
- * otherwise.
- */
- if (!parallel_tunnels &&
- bcmp(sc2->gif_pdst, dst, dst->sa_len) == 0 &&
- bcmp(sc2->gif_psrc, src, src->sa_len) == 0) {
- error = EADDRNOTAVAIL;
- goto bad;
- }
-
- /* can't configure multiple multi-dest interfaces */
-#define multidest(x) \
- (((struct sockaddr_in *)(x))->sin_addr.s_addr == INADDR_ANY)
-#ifdef INET6
-#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;
- }
-#ifdef 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;
-
- error = 0;
+ error = gif_set_tunnel(&sc->gif_if, src, dst);
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? */
+ gif_delete_tunnel(&sc->gif_if);
break;
#endif
@@ -816,11 +717,122 @@ gif_ioctl(ifp, cmd, data)
return error;
}
+int
+gif_set_tunnel(ifp, src, dst)
+ struct ifnet *ifp;
+ struct sockaddr *src;
+ struct sockaddr *dst;
+{
+ struct gif_softc *sc = (struct gif_softc *)ifp;
+ struct gif_softc *sc2;
+ struct sockaddr *osrc, *odst, *sa;
+ int s;
+ int error = 0;
+
+ s = splnet();
+
+ LIST_FOREACH(sc2, &gif_softc_list, gif_list) {
+ 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_len ||
+ sc2->gif_psrc->sa_family != src->sa_family ||
+ sc2->gif_psrc->sa_len != src->sa_len)
+ continue;
+
+ /*
+ * Disallow parallel tunnels unless instructed
+ * otherwise.
+ */
+ if (!parallel_tunnels &&
+ bcmp(sc2->gif_pdst, dst, dst->sa_len) == 0 &&
+ bcmp(sc2->gif_psrc, src, src->sa_len) == 0) {
+ error = EADDRNOTAVAIL;
+ goto bad;
+ }
+
+ /* XXX both end must be valid? (I mean, not 0.0.0.0) */
+ }
+
+ /* XXX we can detach from both, but be polite just in case */
+ if (sc->gif_psrc)
+ switch (sc->gif_psrc->sa_family) {
+#ifdef INET
+ case AF_INET:
+ (void)in_gif_detach(sc);
+ break;
+#endif
+#ifdef INET6
+ case AF_INET6:
+ (void)in6_gif_detach(sc);
+ break;
+#endif
+ }
+
+ osrc = sc->gif_psrc;
+ 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;
+
+ odst = sc->gif_pdst;
+ 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;
+
+ switch (sc->gif_psrc->sa_family) {
+#ifdef INET
+ case AF_INET:
+ error = in_gif_attach(sc);
+ break;
+#endif
+#ifdef INET6
+ case AF_INET6:
+ error = in6_gif_attach(sc);
+ break;
+#endif
+ }
+ if (error) {
+ /* rollback */
+ free((caddr_t)sc->gif_psrc, M_IFADDR);
+ free((caddr_t)sc->gif_pdst, M_IFADDR);
+ sc->gif_psrc = osrc;
+ sc->gif_pdst = odst;
+ goto bad;
+ }
+
+ if (osrc)
+ free((caddr_t)osrc, M_IFADDR);
+ if (odst)
+ free((caddr_t)odst, M_IFADDR);
+
+ if (sc->gif_psrc && sc->gif_pdst)
+ ifp->if_flags |= IFF_RUNNING;
+ else
+ ifp->if_flags &= ~IFF_RUNNING;
+ splx(s);
+
+ return 0;
+
+ bad:
+ if (sc->gif_psrc && sc->gif_pdst)
+ ifp->if_flags |= IFF_RUNNING;
+ else
+ ifp->if_flags &= ~IFF_RUNNING;
+ splx(s);
+
+ return error;
+}
+
void
-gif_delete_tunnel(sc)
- struct gif_softc *sc;
+gif_delete_tunnel(ifp)
+ struct ifnet *ifp;
{
- /* XXX: NetBSD protects this function with splsoftnet() */
+ struct gif_softc *sc = (struct gif_softc *)ifp;
+ int s;
+
+ s = splnet();
if (sc->gif_psrc) {
free((caddr_t)sc->gif_psrc, M_IFADDR);
@@ -830,5 +842,17 @@ gif_delete_tunnel(sc)
free((caddr_t)sc->gif_pdst, M_IFADDR);
sc->gif_pdst = NULL;
}
- /* change the IFF_UP flag as well? */
+ /* it is safe to detach from both */
+#ifdef INET
+ (void)in_gif_detach(sc);
+#endif
+#ifdef INET6
+ (void)in6_gif_detach(sc);
+#endif
+
+ if (sc->gif_psrc && sc->gif_pdst)
+ ifp->if_flags |= IFF_RUNNING;
+ else
+ ifp->if_flags &= ~IFF_RUNNING;
+ splx(s);
}
diff --git a/sys/net/if_gif.h b/sys/net/if_gif.h
index 1d02348..8a0ac56 100644
--- a/sys/net/if_gif.h
+++ b/sys/net/if_gif.h
@@ -69,7 +69,7 @@ struct gif_softc {
const struct encaptab *encap_cookie4;
const struct encaptab *encap_cookie6;
void *gif_netgraph; /* ng_gif(4) netgraph node info */
- LIST_ENTRY(gif_softc) gif_link; /* all gif's are linked */
+ LIST_ENTRY(gif_softc) gif_list; /* all gif's are linked */
};
#define gif_ro gifsc_gifscr.gifscr_ro
@@ -82,10 +82,14 @@ struct gif_softc {
#define GIF_MTU_MAX (8192) /* Maximum MTU */
/* Prototypes */
+void gifattach0(struct gif_softc *);
void gif_input(struct mbuf *, int, struct ifnet *);
int gif_output(struct ifnet *, struct mbuf *, struct sockaddr *,
struct rtentry *);
int gif_ioctl(struct ifnet *, u_long, caddr_t);
+int gif_set_tunnel(struct ifnet *, struct sockaddr *, struct sockaddr *);
+void gif_delete_tunnel(struct ifnet *);
+int gif_encapcheck(const struct mbuf *, int, int, void *);
#endif /* _KERNEL */
diff --git a/sys/netinet/in_gif.c b/sys/netinet/in_gif.c
index ffd877b..d6508d5 100644
--- a/sys/netinet/in_gif.c
+++ b/sys/netinet/in_gif.c
@@ -42,6 +42,7 @@
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
+#include <sys/protosw.h>
#include <sys/malloc.h>
@@ -69,6 +70,18 @@
#include <net/net_osdep.h>
+static int gif_validate4(const struct ip *, struct gif_softc *,
+ struct ifnet *);
+
+extern struct domain inetdomain;
+struct protosw in_gif_protosw =
+{ SOCK_RAW, &inetdomain, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR,
+ in_gif_input, (pr_output_t*)rip_output, 0, rip_ctloutput,
+ 0,
+ 0, 0, 0, 0,
+ &rip_usrreqs
+};
+
static int ip_gif_ttl = GIF_TTL;
SYSCTL_INT(_net_inet_ip, IPCTL_GIF_TTL, gifttl, CTLFLAG_RW,
&ip_gif_ttl, 0, "");
@@ -277,43 +290,29 @@ in_gif_input(m, off)
}
/*
- * we know that we are in IFF_UP, outer address available, and outer family
- * matched the physical addr family. see gif_encapcheck().
+ * validate outer address.
*/
-int
-gif_encapcheck4(m, off, proto, arg)
- const struct mbuf *m;
- int off;
- int proto;
- void *arg;
-{
- struct ip ip;
+static int
+gif_validate4(ip, sc, ifp)
+ const struct ip *ip;
struct gif_softc *sc;
+ struct ifnet *ifp;
+{
struct sockaddr_in *src, *dst;
- int addrmatch;
struct in_ifaddr *ia4;
- /* sanity check done in caller */
- sc = (struct gif_softc *)arg;
src = (struct sockaddr_in *)sc->gif_psrc;
dst = (struct sockaddr_in *)sc->gif_pdst;
- /* LINTED const cast */
- m_copydata(m, 0, sizeof(ip), (caddr_t)&ip);
-
/* check for address match */
- addrmatch = 0;
- if (src->sin_addr.s_addr == ip.ip_dst.s_addr)
- addrmatch |= 1;
- if (dst->sin_addr.s_addr == ip.ip_src.s_addr)
- addrmatch |= 2;
- if (addrmatch != 3)
+ if (src->sin_addr.s_addr != ip->ip_dst.s_addr ||
+ dst->sin_addr.s_addr != ip->ip_src.s_addr)
return 0;
/* martian filters on outer source - NOT done in ip_input! */
- if (IN_MULTICAST(ntohl(ip.ip_src.s_addr)))
+ if (IN_MULTICAST(ntohl(ip->ip_src.s_addr)))
return 0;
- switch ((ntohl(ip.ip_src.s_addr) & 0xff000000) >> 24) {
+ switch ((ntohl(ip->ip_src.s_addr) & 0xff000000) >> 24) {
case 0: case 127: case 255:
return 0;
}
@@ -322,22 +321,21 @@ gif_encapcheck4(m, off, proto, arg)
{
if ((ia4->ia_ifa.ifa_ifp->if_flags & IFF_BROADCAST) == 0)
continue;
- if (ip.ip_src.s_addr == ia4->ia_broadaddr.sin_addr.s_addr)
+ if (ip->ip_src.s_addr == ia4->ia_broadaddr.sin_addr.s_addr)
return 0;
}
/* ingress filters on outer source */
- if ((sc->gif_if.if_flags & IFF_LINK2) == 0 &&
- (m->m_flags & M_PKTHDR) != 0 && m->m_pkthdr.rcvif) {
+ if ((sc->gif_if.if_flags & IFF_LINK2) == 0 && ifp) {
struct sockaddr_in sin;
struct rtentry *rt;
bzero(&sin, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_len = sizeof(struct sockaddr_in);
- sin.sin_addr = ip.ip_src;
+ sin.sin_addr = ip->ip_src;
rt = rtalloc1((struct sockaddr *)&sin, 0, 0UL);
- if (!rt || rt->rt_ifp != m->m_pkthdr.rcvif) {
+ if (!rt || rt->rt_ifp != ifp) {
#if 0
log(LOG_WARNING, "%s: packet from 0x%x dropped "
"due to ingress filter\n", if_name(&sc->gif_if),
@@ -352,3 +350,65 @@ gif_encapcheck4(m, off, proto, arg)
return 32 * 2;
}
+
+/*
+ * we know that we are in IFF_UP, outer address available, and outer family
+ * matched the physical addr family. see gif_encapcheck().
+ */
+int
+gif_encapcheck4(m, off, proto, arg)
+ const struct mbuf *m;
+ int off;
+ int proto;
+ void *arg;
+{
+ struct ip ip;
+ struct gif_softc *sc;
+ struct ifnet *ifp;
+
+ /* sanity check done in caller */
+ sc = (struct gif_softc *)arg;
+
+ /* LINTED const cast */
+ m_copydata(m, 0, sizeof(ip), (caddr_t)&ip);
+ ifp = ((m->m_flags & M_PKTHDR) != 0) ? m->m_pkthdr.rcvif : NULL;
+
+ return gif_validate4(&ip, sc, ifp);
+}
+
+int
+in_gif_attach(sc)
+ struct gif_softc *sc;
+{
+#ifndef USE_ENCAPCHECK
+ struct sockaddr_in mask4;
+
+ bzero(&mask4, sizeof(mask4));
+ mask4.sin_len = sizeof(struct sockaddr_in);
+ mask4.sin_addr.s_addr = ~0;
+
+ if (!sc->gif_psrc || !sc->gif_pdst)
+ return EINVAL;
+ sc->encap_cookie4 = encap_attach(AF_INET, -1, sc->gif_psrc,
+ (struct sockaddr *)&mask4, sc->gif_pdst, (struct sockaddr *)&mask4,
+ (struct protosw *)&in_gif_protosw, sc);
+#else
+ sc->encap_cookie4 = encap_attach_func(AF_INET, -1, gif_encapcheck,
+ &in_gif_protosw, sc);
+#endif
+ if (sc->encap_cookie4 == NULL)
+ return EEXIST;
+ return 0;
+}
+
+int
+in_gif_detach(sc)
+ struct gif_softc *sc;
+{
+ int error;
+
+ error = encap_detach(sc->encap_cookie4);
+ if (error == 0)
+ sc->encap_cookie4 = NULL;
+ return error;
+}
diff --git a/sys/netinet/in_gif.h b/sys/netinet/in_gif.h
index 262d9ba..8197d29 100644
--- a/sys/netinet/in_gif.h
+++ b/sys/netinet/in_gif.h
@@ -35,8 +35,11 @@
#define GIF_TTL 30
+struct gif_softc;
void in_gif_input(struct mbuf *, int off);
int in_gif_output(struct ifnet *, int, struct mbuf *, struct rtentry *);
int gif_encapcheck4(const struct mbuf *, int, int, void *);
+int in_gif_attach(struct gif_softc *);
+int in_gif_detach(struct gif_softc *);
#endif /*_NETINET_IN_GIF_H_*/
diff --git a/sys/netinet6/in6_gif.c b/sys/netinet6/in6_gif.c
index 6d48afd..83a2fe6 100644
--- a/sys/netinet6/in6_gif.c
+++ b/sys/netinet6/in6_gif.c
@@ -41,6 +41,7 @@
#include <sys/errno.h>
#include <sys/queue.h>
#include <sys/syslog.h>
+#include <sys/protosw.h>
#include <sys/malloc.h>
@@ -59,6 +60,7 @@
#include <netinet6/in6_gif.h>
#include <netinet6/in6_var.h>
#endif
+#include <netinet6/ip6protosw.h>
#include <netinet/ip_ecn.h>
#ifdef INET6
#include <netinet6/ip6_ecn.h>
@@ -68,6 +70,18 @@
#include <net/net_osdep.h>
+static int gif_validate6(const struct ip6_hdr *, struct gif_softc *,
+ struct ifnet *);
+
+extern struct domain inet6domain;
+struct ip6protosw in6_gif_protosw =
+{ SOCK_RAW, &inet6domain, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR,
+ in6_gif_input, rip6_output, 0, rip6_ctloutput,
+ 0,
+ 0, 0, 0, 0,
+ &rip6_usrreqs
+};
+
int
in6_gif_output(ifp, family, m, rt)
struct ifnet *ifp;
@@ -281,52 +295,45 @@ int in6_gif_input(mp, offp, proto)
}
/*
- * we know that we are in IFF_UP, outer address available, and outer family
- * matched the physical addr family. see gif_encapcheck().
+ * validate outer address.
*/
-int
-gif_encapcheck6(m, off, proto, arg)
- const struct mbuf *m;
- int off;
- int proto;
- void *arg;
-{
- struct ip6_hdr ip6;
+static int
+gif_validate6(ip6, sc, ifp)
+ const struct ip6_hdr *ip6;
struct gif_softc *sc;
+ struct ifnet *ifp;
+{
struct sockaddr_in6 *src, *dst;
- int addrmatch;
- /* sanity check done in caller */
- sc = (struct gif_softc *)arg;
src = (struct sockaddr_in6 *)sc->gif_psrc;
dst = (struct sockaddr_in6 *)sc->gif_pdst;
- m_copydata(m, 0, sizeof(ip6), (caddr_t)&ip6);
-
- /* check for address match */
- addrmatch = 0;
- if (IN6_ARE_ADDR_EQUAL(&src->sin6_addr, &ip6.ip6_dst))
- addrmatch |= 1;
- if (IN6_ARE_ADDR_EQUAL(&dst->sin6_addr, &ip6.ip6_src))
- addrmatch |= 2;
- if (addrmatch != 3)
+ /*
+ * Check for address match. Note that the check is for an incoming
+ * packet. We should compare the *source* address in our configuration
+ * and the *destination* address of the packet, and vice versa.
+ */
+ if (!IN6_ARE_ADDR_EQUAL(&src->sin6_addr, &ip6->ip6_dst) ||
+ !IN6_ARE_ADDR_EQUAL(&dst->sin6_addr, &ip6->ip6_src))
return 0;
/* martian filters on outer source - done in ip6_input */
/* ingress filters on outer source */
- if ((sc->gif_if.if_flags & IFF_LINK2) == 0 &&
- (m->m_flags & M_PKTHDR) != 0 && m->m_pkthdr.rcvif) {
+ if ((sc->gif_if.if_flags & IFF_LINK2) == 0 && ifp) {
struct sockaddr_in6 sin6;
struct rtentry *rt;
bzero(&sin6, sizeof(sin6));
sin6.sin6_family = AF_INET6;
sin6.sin6_len = sizeof(struct sockaddr_in6);
- sin6.sin6_addr = ip6.ip6_src;
- /* XXX scopeid */
+ sin6.sin6_addr = ip6->ip6_src;
+#ifndef SCOPEDROUTING
+ sin6.sin6_scope_id = 0; /* XXX */
+#endif
+
rt = rtalloc1((struct sockaddr *)&sin6, 0, 0UL);
- if (!rt || rt->rt_ifp != m->m_pkthdr.rcvif) {
+ if (!rt || rt->rt_ifp != ifp) {
#if 0
log(LOG_WARNING, "%s: packet from %s dropped "
"due to ingress filter\n", if_name(&sc->gif_if),
@@ -341,3 +348,68 @@ gif_encapcheck6(m, off, proto, arg)
return 128 * 2;
}
+
+/*
+ * we know that we are in IFF_UP, outer address available, and outer family
+ * matched the physical addr family. see gif_encapcheck().
+ * sanity check for arg should have been done in the caller.
+ */
+int
+gif_encapcheck6(m, off, proto, arg)
+ const struct mbuf *m;
+ int off;
+ int proto;
+ void *arg;
+{
+ struct ip6_hdr ip6;
+ struct gif_softc *sc;
+ struct ifnet *ifp;
+
+ /* sanity check done in caller */
+ sc = (struct gif_softc *)arg;
+
+ /* LINTED const cast */
+ m_copydata(m, 0, sizeof(ip6), (caddr_t)&ip6);
+ ifp = ((m->m_flags & M_PKTHDR) != 0) ? m->m_pkthdr.rcvif : NULL;
+
+ return gif_validate6(&ip6, sc, ifp);
+}
+
+int
+in6_gif_attach(sc)
+ struct gif_softc *sc;
+{
+#ifndef USE_ENCAPCHECK
+ struct sockaddr_in6 mask6;
+
+ bzero(&mask6, sizeof(mask6));
+ mask6.sin6_len = sizeof(struct sockaddr_in6);
+ mask6.sin6_addr.s6_addr32[0] = mask6.sin6_addr.s6_addr32[1] =
+ mask6.sin6_addr.s6_addr32[2] = mask6.sin6_addr.s6_addr32[3] = ~0;
+ mask6.sin6_scope_id = ~0;
+
+ if (!sc->gif_psrc || !sc->gif_pdst)
+ return EINVAL;
+ sc->encap_cookie6 = encap_attach(AF_INET6, -1, sc->gif_psrc,
+ (struct sockaddr *)&mask6, sc->gif_pdst, (struct sockaddr *)&mask6,
+ (struct protosw *)&in6_gif_protosw, sc);
+#else
+ sc->encap_cookie6 = encap_attach_func(AF_INET6, -1, gif_encapcheck,
+ (struct protosw *)&in6_gif_protosw, sc);
+#endif
+ if (sc->encap_cookie6 == NULL)
+ return EEXIST;
+ return 0;
+}
+
+int
+in6_gif_detach(sc)
+ struct gif_softc *sc;
+{
+ int error;
+
+ error = encap_detach(sc->encap_cookie6);
+ if (error == 0)
+ sc->encap_cookie6 = NULL;
+ return error;
+}
diff --git a/sys/netinet6/in6_gif.h b/sys/netinet6/in6_gif.h
index b1fe104..12884a2 100644
--- a/sys/netinet6/in6_gif.h
+++ b/sys/netinet6/in6_gif.h
@@ -35,8 +35,11 @@
#define GIF_HLIM 30
+struct gif_softc;
int in6_gif_input __P((struct mbuf **, int *, int));
int in6_gif_output __P((struct ifnet *, int, struct mbuf *, struct rtentry *));
int gif_encapcheck6 __P((const struct mbuf *, int, int, void *));
+int in6_gif_attach __P((struct gif_softc *));
+int in6_gif_detach __P((struct gif_softc *));
#endif /*_NETINET6_IN6_GIF_H_*/
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