/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* $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 $ */
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2006 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
#include <sys/param.h>
#include <sys/systm.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 <netinet/in.h>
#include <netinet/in_systm.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 /* ifp->if_unit is only 15 bits */
#ifdef __APPLE__
void gifattach(void);
-int gif_pre_output(struct ifnet *ifp, u_long protocol_family, struct mbuf **m0,
- const struct sockaddr *dst, caddr_t rt, char *frame, char *address);
static void gif_create_dev(void);
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_int32_t cmd, void *data);
int ngif = 0; /* number of interfaces */
#endif
0, 0, 0, 0,
0,
&rip_usrreqs,
- 0, rip_unlock, 0
+ 0, rip_unlock, 0, {0, 0}, 0, {0}
};
#endif
#if INET6
0, 0, 0, 0,
0,
&rip6_usrreqs,
- 0, rip_unlock, 0,
+ 0, rip_unlock, 0, {0, 0}, 0, {0}
};
#endif
-#ifndef MAX_GIF_NEST
-/*
- * This macro controls the upper limitation on nesting of gif tunnels.
- * Since, setting a large value to this macro with a careless configuration
- * may introduce system crash, we don't allow any nestings by default.
- * If you need to configure nested gif tunnels, you can define this macro
- * in your kernel configuration file. However, if you do so, please be
- * careful to configure the tunnels so that it won't make a loop.
- */
-#define MAX_GIF_NEST 1
-#endif
-static int max_gif_nesting = MAX_GIF_NEST;
-
-
-
#ifdef __APPLE__
/*
* Theory of operation: initially, one gif interface is created.
*/
/* GIF interface module support */
-int gif_demux(
- struct ifnet *ifp,
- struct mbuf *m,
- char *frame_header,
- u_long *protocol_family)
+static int gif_demux(
+ ifnet_t ifp,
+ __unused mbuf_t m,
+ __unused char *frame_header,
+ protocol_family_t *protocol_family)
{
- struct gif_softc* gif = (struct gif_softc*)ifp->if_softc;
-
/* Only one protocol may be attached to a gif interface. */
- *protocol_family = gif->gif_proto;
+ *protocol_family = ((struct gif_softc*)ifnet_softc(ifp))->gif_proto;
return 0;
}
-static
-int gif_add_proto(struct ifnet *ifp, u_long protocol_family, struct ddesc_head_str *desc_head)
+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)
{
/* Only one protocol may be attached at a time */
- struct gif_softc* gif = (struct gif_softc*)ifp->if_softc;
+ struct gif_softc* gif = ifnet_softc(ifp);
if (gif->gif_proto != 0)
- printf("gif_add_proto: request add_proto for gif%d\n", gif->gif_if.if_unit);
+ printf("gif_add_proto: request add_proto for gif%d\n", ifnet_unit(ifp));
gif->gif_proto = protocol_family;
return 0;
}
-static
-int gif_del_proto(struct ifnet *ifp, u_long protocol_family)
+static errno_t
+gif_del_proto(
+ ifnet_t ifp,
+ protocol_family_t protocol_family)
{
- if (((struct gif_softc*)ifp)->gif_proto == protocol_family)
- ((struct gif_softc*)ifp)->gif_proto = 0;
- else
- return ENOENT;
-
+ if (((struct gif_softc*)ifnet_softc(ifp))->gif_proto == protocol_family)
+ ((struct gif_softc*)ifnet_softc(ifp))->gif_proto = 0;
+
return 0;
}
/* Glue code to attach inet to a gif interface through DLIL */
-int
+static errno_t
gif_attach_proto_family(
- struct ifnet *ifp,
- u_long protocol_family)
+ ifnet_t ifp,
+ protocol_family_t protocol_family)
{
- struct dlil_proto_reg_str reg;
- int stat;
+ struct ifnet_attach_proto_param reg;
+ errno_t stat;
bzero(®, sizeof(reg));
- TAILQ_INIT(®.demux_desc_head);
- reg.interface_family = ifp->if_family;
- reg.unit_number = ifp->if_unit;
reg.input = gif_input;
- reg.pre_output = gif_pre_output;
- reg.protocol_family = protocol_family;
- stat = dlil_attach_protocol(®);
+ stat = ifnet_attach_protocol(ifp, protocol_family, ®);
if (stat && stat != EEXIST) {
- panic("gif_attach_proto_family can't attach interface fam=%d\n", protocol_family);
+ printf("gif_attach_proto_family can't attach interface fam=%d\n",
+ protocol_family);
}
return stat;
#endif
/* Function to setup the first gif interface */
-void
+__private_extern__ void
gifattach(void)
{
- int error;
+ errno_t result;
/* Init the list of interfaces */
TAILQ_INIT(&gifs);
/* Register protocol registration functions */
- if ( error = dlil_reg_proto_module(AF_INET, APPLE_IF_FAM_GIF, gif_attach_proto_family, NULL) != 0)
- printf("dlil_reg_proto_module failed for AF_INET error=%d\n", error);
+ 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);
- if ( error = dlil_reg_proto_module(AF_INET6, APPLE_IF_FAM_GIF, gif_attach_proto_family, NULL) != 0)
- printf("dlil_reg_proto_module failed for AF_INET6 error=%d\n", error);
+ 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);
/* Create first device */
gif_create_dev();
}
+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);
+
+ sc->tap_mode = mode;
+ sc->tap_callback = callback;
+
+ return 0;
+}
+
/* Creates another gif device if there are none free */
static void
gif_create_dev(void)
{
- struct gif_softc *sc;
+ struct gif_softc *sc;
+ struct ifnet_init_params gif_init;
+ errno_t result = 0;
/* Can't create more than GIF_MAXUNIT */
/* 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)
+ if ((ifnet_flags(sc->gif_if) & IFF_RUNNING) == 0)
return;
}
log(LOG_ERR, "gifattach: failed to allocate gif%d\n", ngif);
return;
}
+
+ bzero(&gif_init, sizeof(gif_init));
+ gif_init.name = GIFNAME;
+ gif_init.unit = ngif;
+ gif_init.type = IFT_GIF;
+ gif_init.family = IFNET_FAMILY_GIF;
+ gif_init.output = gif_output;
+ gif_init.demux = gif_demux;
+ gif_init.add_proto = gif_add_proto;
+ gif_init.del_proto = gif_del_proto;
+ gif_init.softc = sc;
+ gif_init.ioctl = gif_ioctl;
+ gif_init.set_bpf_tap = gif_set_bpf_tap;
bzero(sc, sizeof(struct gif_softc));
- sc->gif_if.if_softc = sc;
- sc->gif_if.if_name = GIFNAME;
- sc->gif_if.if_unit = ngif;
-
+ result = ifnet_allocate(&gif_init, &sc->gif_if);
+ if (result != 0) {
+ printf("gif_create_dev, ifnet_allocate failed - %d\n", result);
+ _FREE(sc, M_DEVBUF);
+ return;
+ }
sc->encap_cookie4 = sc->encap_cookie6 = NULL;
-#ifdef INET
+#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));
+ printf("%s: unable to attach encap4\n", if_name(sc->gif_if));
+ ifnet_release(sc->gif_if);
FREE(sc, M_DEVBUF);
return;
}
#endif
-#ifdef INET6
+#if INET6
sc->encap_cookie6 = encap_attach_func(AF_INET6, -1,
gif_encapcheck, (struct protosw*)&in6_gif_protosw, sc);
if (sc->encap_cookie6 == NULL) {
encap_detach(sc->encap_cookie4);
sc->encap_cookie4 = NULL;
}
- printf("%s: unable to attach encap6\n", if_name(&sc->gif_if));
+ printf("%s: unable to attach encap6\n", if_name(sc->gif_if));
+ ifnet_release(sc->gif_if);
FREE(sc, M_DEVBUF);
return;
}
#endif
-
sc->gif_called = 0;
- 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;
+ ifnet_set_mtu(sc->gif_if, GIF_MTU);
+ ifnet_set_flags(sc->gif_if, IFF_POINTOPOINT | IFF_MULTICAST, 0xffff);
#if 0
/* turn off ingress filter */
sc->gif_if.if_flags |= IFF_LINK2;
#endif
- sc->gif_if.if_demux = gif_demux;
- 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;
- sc->gif_if.if_add_proto = gif_add_proto;
- sc->gif_if.if_del_proto = gif_del_proto;
- dlil_if_attach(&sc->gif_if);
- bpfattach(&sc->gif_if, DLT_NULL, sizeof(u_int));
+ result = ifnet_attach(sc->gif_if, NULL);
+ if (result != 0) {
+ printf("gif_create_dev - ifnet_attach failed - %d\n", result);
+ ifnet_release(sc->gif_if);
+ FREE(sc, M_DEVBUF);
+ return;
+ }
+#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++;
}
static int
-gif_encapcheck(m, off, proto, arg)
- const struct mbuf *m;
- int off;
- int proto;
- void *arg;
+gif_encapcheck(
+ const struct mbuf *m,
+ int off,
+ int proto,
+ void *arg)
{
struct ip ip;
struct gif_softc *sc;
if (sc == NULL)
return 0;
- if ((sc->gif_if.if_flags & IFF_UP) == 0)
+ if ((ifnet_flags(sc->gif_if) & IFF_UP) == 0)
return 0;
/* no physical address */
return 0;
}
- /* LINTED const cast */
- m_copydata((struct mbuf *)m, 0, sizeof(ip), (caddr_t)&ip);
+ mbuf_copydata(m, 0, sizeof(ip), &ip);
switch (ip.ip_v) {
#if INET
}
}
-int
-gif_pre_output(
- struct ifnet *ifp,
- u_long protocol_family,
- struct mbuf **m0,
- const struct sockaddr *dst,
- caddr_t rt,
- char *frame,
- char *address)
+static errno_t
+gif_output(
+ ifnet_t ifp,
+ mbuf_t m)
{
- struct gif_softc *sc = (struct gif_softc*)ifp;
- register struct mbuf * m = *m0;
+ struct gif_softc *sc = ifnet_softc(ifp);
int error = 0;
/*
- * gif may cause infinite recursion calls when misconfigured.
- * We'll prevent this by introducing upper limit.
- * XXX: this mechanism may introduce another problem about
- * mutual exclusion of the variable CALLED, especially if we
- * use kernel thread.
+ max_gif_nesting check used to live here. It doesn't anymore
+ because there is no guaruntee that we won't be called
+ concurrently from more than one thread.
*/
- if (++sc->gif_called > max_gif_nesting) {
- log(LOG_NOTICE,
- "gif_output: recursively called too many times(%d)\n",
- sc->gif_called);
- m_freem(m); /* free it here not in dlil_output*/
- error = EIO; /* is there better errno? */
- goto end;
- }
-
- ifnet_touch_lastchange(ifp);
+
m->m_flags &= ~(M_BCAST|M_MCAST);
- if (!(ifp->if_flags & IFF_UP) ||
+ if (!(ifnet_flags(ifp) & IFF_UP) ||
sc->gif_psrc == NULL || sc->gif_pdst == NULL) {
+ ifnet_touch_lastchange(ifp);
m_freem(m); /* free it here not in dlil_output */
error = ENETDOWN;
goto end;
}
- if (ifp->if_bpf) {
- /*
- * We need to prepend the address family as
- * a four byte field. Cons up a dummy header
- * to pacify bpf. This is safe because bpf
- * will only read from the mbuf (i.e., it won't
- * try to free it or keep a pointer a to it).
- */
- struct mbuf m0;
- u_int32_t protocol_family = dst->sa_family;
-
- m0.m_next = m;
- m0.m_len = 4;
- m0.m_data = (char *)&protocol_family;
-
- bpf_mtap(ifp, &m0);
- }
- ifp->if_opackets++;
- ifp->if_obytes += m->m_pkthdr.len;
-
+ bpf_tap_out(ifp, 0, m, &sc->gif_proto, sizeof(sc->gif_proto));
+
/* inner AF-specific encapsulation */
/* XXX should we check if our outer source is legal? */
switch (sc->gif_psrc->sa_family) {
#if INET
case AF_INET:
- error = in_gif_output(ifp, dst->sa_family, m, (struct rtentry*)rt);
+ error = in_gif_output(ifp, sc->gif_proto, m, NULL);
break;
#endif
#if INET6
case AF_INET6:
- error = in6_gif_output(ifp, dst->sa_family, m, (struct rtentry*)rt);
+ error = in6_gif_output(ifp, sc->gif_proto, m, NULL);
break;
#endif
default:
}
end:
- sc->gif_called = 0; /* reset recursion counter */
if (error) {
/* the mbuf was freed either by in_gif_output or in here */
- *m0 = NULL; /* avoid getting dlil_output freeing it */
- ifp->if_oerrors++;
+ 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; /* if no error, packet got sent already */
return error;
}
-int
+/*
+ * gif_input is the input handler for IP and IPv6 attached to gif
+ */
+static errno_t
gif_input(
- struct mbuf *m,
- char* frame_header,
- struct ifnet* gifp,
- u_long protocol_family,
- int sync_ok)
+ ifnet_t ifp,
+ protocol_family_t protocol_family,
+ mbuf_t m,
+ __unused char *frame_header)
{
-
- if (gifp == NULL) {
- /* just in case */
- m_freem(m);
- return;
- }
-
- if (m->m_pkthdr.rcvif)
- m->m_pkthdr.rcvif = gifp;
+ errno_t error;
+ struct gif_softc *sc = ifnet_softc(ifp);
- if (gifp->if_bpf) {
- /*
- * We need to prepend the address family as
- * a four byte field. Cons up a dummy header
- * to pacify bpf. This is safe because bpf
- * will only read from the mbuf (i.e., it won't
- * try to free it or keep a pointer a to it).
- */
- struct mbuf m0;
- u_int32_t protocol_family1 = protocol_family;
-
- m0.m_next = m;
- m0.m_len = 4;
- m0.m_data = (char *)&protocol_family1;
-
- bpf_mtap(gifp, &m0);
- }
+ bpf_tap_in(ifp, 0, m, &sc->gif_proto, sizeof(sc->gif_proto));
/*
* Put the packet to the network layer input queue according to the
* it occurs more times than we thought, we may change the policy
* again.
*/
- proto_input(protocol_family, m);
- gifp->if_ipackets++;
- gifp->if_ibytes += m->m_pkthdr.len;
+ error = proto_input(protocol_family, m);
+ ifnet_stat_increment_in(ifp, 1, m->m_pkthdr.len, 0);
return (0);
}
/* XXX how should we handle IPv6 scope on SIOC[GS]IFPHYADDR? */
-int
-gif_ioctl(ifp, cmd, data)
- struct ifnet *ifp;
- u_long cmd;
- void* data;
+static errno_t
+gif_ioctl(
+ ifnet_t ifp,
+ u_int32_t cmd,
+ void *data)
{
- struct gif_softc *sc = (struct gif_softc*)ifp;
+ struct gif_softc *sc = ifnet_softc(ifp);
struct ifreq *ifr = (struct ifreq*)data;
int error = 0, size;
- struct sockaddr *dst, *src;
+ struct sockaddr *dst = NULL, *src = NULL;
struct sockaddr *sa;
- int s;
struct ifnet *ifp2;
struct gif_softc *sc2;
if (mtu < GIF_MTU_MIN || mtu > GIF_MTU_MAX) {
return (EINVAL);
}
- ifp->if_mtu = mtu;
+ ifnet_set_mtu(ifp, mtu);
}
break;
#endif /* SIOCSIFMTU */
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp2, &ifnet_head, if_link) {
- if (strcmp(ifp2->if_name, GIFNAME) != 0)
+ if (strcmp(ifnet_name(ifp2), GIFNAME) != 0)
continue;
- sc2 = ifp2->if_softc;
+ sc2 = ifnet_softc(ifp2);
if (sc2 == sc)
continue;
if (!sc2->gif_pdst || !sc2->gif_psrc)
bcopy((caddr_t)dst, (caddr_t)sa, dst->sa_len);
sc->gif_pdst = sa;
- ifp->if_flags |= IFF_RUNNING;
-
- s = splimp();
- if_up(ifp); /* mark interface UP and send up RTM_IFINFO */
+ ifnet_set_flags(ifp, IFF_RUNNING | IFF_UP, IFF_RUNNING | IFF_UP);
+
#ifdef __APPLE__
/* Make sure at least one unused device is still available */
gif_create_dev();
#endif
- splx(s);
error = 0;
break;
projects / apple / xnu.git / blobdiff