/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @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@
*/
/*
* Copyright (c) 1982, 1986, 1993
* @(#)if_loop.c 8.1 (Berkeley) 6/10/93
* $FreeBSD: src/sys/net/if_loop.c,v 1.47.2.5 2001/07/03 11:01:41 ume Exp $
*/
+/*
+ * 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.
+ */
/*
* Loopback interface driver for protocol testing and timing.
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sockio.h>
+#include <sys/mcache.h>
#include <net/if.h>
#include <net/if_types.h>
-#include <net/netisr.h>
#include <net/route.h>
#include <net/bpf.h>
#include <sys/malloc.h>
#include <netinet/in_var.h>
#endif
-#if IPX
-#include <netipx/ipx.h>
-#include <netipx/ipx_if.h>
-#endif
-
#if INET6
-#ifndef INET
+#if !INET
#include <netinet/in.h>
#endif
#include <netinet6/in6_var.h>
#endif
#include <net/dlil.h>
+#include <net/kpi_protocol.h>
#if NETAT
extern struct ifqueue atalkintrq;
#endif
-#include "bpfilter.h"
-#if NBPFILTER > 0
-#include <net/bpfdesc.h>
+#if CONFIG_MACF_NET
+#include <security/mac_framework.h>
#endif
#define NLOOP_ATTACHMENTS (NLOOP * 12)
struct lo_statics_str {
- int bpf_mode;
- int (*bpf_callback)(struct ifnet *, struct mbuf *);
+ int bpf_mode;
+ bpf_packet_func bpf_callback;
};
-static struct if_proto *lo_array[NLOOP_ATTACHMENTS];
-static struct lo_statics_str lo_statics[NLOOP];
-static lo_count = 0;
+void loopattach(void);
+static struct lo_statics_str lo_statics[NLOOP];
+int loopattach_done = 0; /* used to sync ip6_init2 loopback configuration */
#ifdef TINY_LOMTU
#define LOMTU (1024+512)
#define LOMTU 16384
#endif
-struct ifnet loif[NLOOP];
-
-void lo_reg_if_mods();
+ifnet_t lo_ifp = NULL;
+struct loopback_header {
+ protocol_family_t protocol;
+};
+static void lo_reg_if_mods(void);
+/* Local forward declerations */
-int lo_demux(ifp, m, frame_header, proto)
- struct ifnet *ifp;
- struct mbuf *m;
- char *frame_header;
- struct if_proto **proto;
+static errno_t
+lo_demux(
+ __unused ifnet_t ifp,
+ __unused mbuf_t m,
+ char *frame_header,
+ protocol_family_t *protocol_family)
{
- int i;
- struct if_proto **proto_ptr;
-
- proto_ptr = mtod(m, struct if_proto **);
- *proto = *proto_ptr;
- m_adj(m, sizeof(u_long));
- return 0;
+ struct loopback_header *header = (struct loopback_header *)frame_header;
+
+ *protocol_family = header->protocol;
+
+ return 0;
}
-int lo_framer(ifp, m, dest, dest_linkaddr, frame_type)
- struct ifnet *ifp;
- struct mbuf **m;
- struct sockaddr *dest;
- char *dest_linkaddr;
- char *frame_type;
-
+static errno_t
+lo_framer(
+ __unused ifnet_t ifp,
+ mbuf_t *m,
+ __unused const struct sockaddr *dest,
+ __unused const char *dest_linkaddr,
+ const char *frame_type)
{
- char *to_ptr;
+ struct loopback_header *header;
- M_PREPEND(*m, (4 * sizeof(u_long)), M_WAITOK);
- to_ptr = mtod(*m, char *);
- bcopy(dest_linkaddr, to_ptr, (4 * sizeof(u_long)));
+ M_PREPEND(*m, sizeof(struct loopback_header), M_WAITOK);
+ if (*m == NULL)
+ return EJUSTRETURN; /* Tell caller not to try to free passed-in mbuf */
+ header = mtod(*m, struct loopback_header*);
+ header->protocol = *(const u_int32_t*)frame_type;
return 0;
}
-static
-int lo_add_if(struct ifnet *ifp)
-{
- ifp->if_demux = lo_demux;
- ifp->if_framer = lo_framer;
- ifp->if_event = 0;
- return 0;
-}
-
-static
-int lo_del_if(struct ifnet *ifp)
+static errno_t
+lo_add_proto(
+ __unused ifnet_t interface,
+ __unused protocol_family_t protocol_family,
+ __unused const struct ifnet_demux_desc *demux_array,
+ __unused u_int32_t demux_count)
{
return 0;
}
-
-
-static
-int lo_add_proto(struct ddesc_head_str *desc_head, struct if_proto *proto, u_long dl_tag)
+static errno_t
+lo_del_proto(
+ __unused ifnet_t ifp,
+ __unused protocol_family_t protocol)
{
- int i;
-
- for (i=0; i < lo_count; i++)
- if (lo_array[i] == 0) {
- lo_array[lo_count] = proto;
- return 0;
- }
-
- if ((i == lo_count) && (lo_count == NLOOP_ATTACHMENTS))
- panic("lo_add_proto -- Too many attachments\n");
-
- lo_array[lo_count++] = proto;
- return 0;
+ return 0;
}
-
-static
-int lo_del_proto(struct if_proto *proto, u_long dl_tag)
+static int
+lo_output(
+ ifnet_t ifp,
+ mbuf_t m_list)
{
- int i;
-
- for (i=0; i < lo_count; i++)
- if (lo_array[i] == proto) {
- lo_array[i] = 0;
- return 0;
- }
-
- return ENOENT;
-}
+ mbuf_t m;
+
+ for (m = m_list; m; m = m->m_nextpkt) {
+ if ((m->m_flags & M_PKTHDR) == 0)
+ panic("lo_output: no HDR");
-static int
-lo_output(ifp, m)
- struct ifnet *ifp;
- register struct mbuf *m;
-{ u_int *prepend_ptr;
- u_int af;
- u_long saved_header[3];
-
- if ((m->m_flags & M_PKTHDR) == 0)
- panic("lo_output: no HDR");
-
- /*
- * Don't overwrite the rcvif field if it is in use.
- * This is used to match multicast packets, sent looping
- * back, with the appropriate group record on input.
- */
- if (m->m_pkthdr.rcvif == NULL)
- m->m_pkthdr.rcvif = ifp;
- prepend_ptr = mtod(m, u_int *);
- af = *prepend_ptr;
- m_adj(m, sizeof(u_int));
-
-
-#if NBPFILTER > 0
- if (lo_statics[ifp->if_unit].bpf_mode != BPF_TAP_DISABLE) {
- struct mbuf m0, *n;
-
- bcopy(mtod(m, caddr_t), &saved_header[0], (3 * sizeof(u_long)));
- m_adj(m, (3 * sizeof(u_long)));
-
- n = m;
- if (ifp->if_bpf->bif_dlt == DLT_NULL) {
- /*
- * 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).
- */
- m0.m_next = m;
- m0.m_len = 4;
- m0.m_data = (char *)⁡
- n = &m0;
- }
+ /*
+ * Don't overwrite the rcvif field if it is in use.
+ * This is used to match multicast packets, sent looping
+ * back, with the appropriate group record on input.
+ */
+ if (m->m_pkthdr.rcvif == NULL)
+ m->m_pkthdr.rcvif = ifp;
- (*lo_statics[ifp->if_unit].bpf_callback)(ifp, n);
+ atomic_add_64(&ifp->if_ibytes, m->m_pkthdr.len);
+ atomic_add_64(&ifp->if_obytes, m->m_pkthdr.len);
- M_PREPEND(m, (3 * sizeof(u_long)), M_WAITOK);
- bcopy(&saved_header[0], mtod(m, caddr_t), (3 * sizeof(u_long)));
+ atomic_add_64(&ifp->if_opackets, 1);
+ atomic_add_64(&ifp->if_ipackets, 1);
+ m->m_pkthdr.header = mtod(m, char *);
+ if (apple_hwcksum_tx != 0) {
+ /* loopback checksums are always OK */
+ m->m_pkthdr.csum_data = 0xffff;
+ m->m_pkthdr.csum_flags = CSUM_DATA_VALID | CSUM_PSEUDO_HDR |
+ CSUM_IP_CHECKED | CSUM_IP_VALID;
+ }
+ m_adj(m, sizeof(struct loopback_header));
+
+ {
+ /* We need to prepend the address family as a four byte field. */
+ u_int32_t protocol_family =
+ ((struct loopback_header*)m->m_pkthdr.header)->protocol;
+
+ bpf_tap_out(ifp, DLT_NULL, m, &protocol_family, sizeof(protocol_family));
+ }
}
-#endif
-
- ifp->if_ibytes += m->m_pkthdr.len;
- ifp->if_obytes += m->m_pkthdr.len;
-
- ifp->if_opackets++;
- ifp->if_ipackets++;
- m->m_pkthdr.header = mtod(m, char *);
- m->m_pkthdr.csum_data = 0xffff; /* loopback checksums are always OK */
- m->m_pkthdr.csum_flags = CSUM_DATA_VALID | CSUM_PSEUDO_HDR |
- CSUM_IP_CHECKED | CSUM_IP_VALID;
- return dlil_input(ifp, m, m);
+ return ifnet_input(ifp, m_list, NULL);
}
/*
- * This is a common pre-output route used by INET, AT, etc. This could
+ * This is a common pre-output route used by INET and INET6. This could
* (should?) be split into separate pre-output routines for each protocol.
*/
-static int
-lo_pre_output(ifp, m, dst, route, frame_type, dst_addr, dl_tag)
- struct ifnet *ifp;
- register struct mbuf **m;
- struct sockaddr *dst;
- void *route;
- char *frame_type;
- char *dst_addr;
- u_long dl_tag;
+static errno_t
+lo_pre_output(
+ __unused ifnet_t ifp,
+ protocol_family_t protocol_family,
+ mbuf_t *m,
+ __unused const struct sockaddr *dst,
+ void *route,
+ char *frame_type,
+ __unused char *dst_addr)
{
- int s, isr;
- register struct ifqueue *ifq = 0;
- u_long *prepend_ptr;
- register struct rtentry *rt = (struct rtentry *) route;
+ register struct rtentry *rt = route;
+
+ (*m)->m_flags |= M_LOOP;
- prepend_ptr = (u_long *) dst_addr;
if (((*m)->m_flags & M_PKTHDR) == 0)
panic("looutput no HDR");
- if (rt && rt->rt_flags & (RTF_REJECT|RTF_BLACKHOLE)) {
- if (rt->rt_flags & RTF_BLACKHOLE) {
- m_freem(*m);
- return EJUSTRETURN;
- }
- else
- return ((rt->rt_flags & RTF_HOST) ? EHOSTUNREACH : ENETUNREACH);
- }
-
- switch (dst->sa_family) {
-#if INET
- case AF_INET:
- ifq = &ipintrq;
- isr = NETISR_IP;
- break;
-#endif
-#if INET6
- case AF_INET6:
- (*m)->m_flags |= M_LOOP;
- ifq = &ip6intrq;
- isr = NETISR_IPV6;
- break;
-#endif
-#if IPX
- case AF_IPX:
- ifq = &ipxintrq;
- isr = NETISR_IPX;
- break;
-#endif
-#if NS
- case AF_NS:
- ifq = &nsintrq;
- isr = NETISR_NS;
- break;
-#endif
-#if ISO
- case AF_ISO:
- ifq = &clnlintrq;
- isr = NETISR_ISO;
- break;
-#endif
-#if NETAT
- case AF_APPLETALK:
- ifq = &atalkintrq;
- isr = NETISR_APPLETALK;
- break;
-#endif NETAT
- default:
- return (EAFNOSUPPORT);
+ if (rt != NULL) {
+ u_int32_t rt_flags = rt->rt_flags;
+ if (rt_flags & (RTF_REJECT | RTF_BLACKHOLE)) {
+ if (rt_flags & RTF_BLACKHOLE) {
+ m_freem(*m);
+ return EJUSTRETURN;
+ } else {
+ return ((rt_flags & RTF_HOST) ?
+ EHOSTUNREACH : ENETUNREACH);
+ }
+ }
}
- *prepend_ptr++ = dst->sa_family; /* For lo_output(BPF) */
- *prepend_ptr++ = dlttoproto(dl_tag); /* For lo_demux */
- *prepend_ptr++ = (u_long) ifq; /* For lo_input */
- *prepend_ptr = isr; /* For lo_input */
+ *(protocol_family_t*)frame_type = protocol_family;
return 0;
}
-
-
-
/*
* lo_input - This should work for all attached protocols that use the
* ifq/schednetisr input mechanism.
*/
-
-
-int
-lo_input(m, fh, ifp, dl_tag, sync_ok)
- register struct mbuf *m;
- char *fh;
- struct ifnet *ifp;
- u_long dl_tag;
- int sync_ok;
-
+static errno_t
+lo_input(
+ __unused ifnet_t ifp,
+ __unused protocol_family_t protocol_family,
+ mbuf_t m)
{
- u_long *prepend_ptr;
- int s, isr;
- register struct ifqueue *ifq = 0;
-
- prepend_ptr = mtod(m, u_long *);
- ifq = (struct ifqueue *) *prepend_ptr++;
- isr = *prepend_ptr;
- m_adj(m, (2 * sizeof(u_long)));
-
- s = splimp();
- if (IF_QFULL(ifq)) {
- IF_DROP(ifq);
+ if (proto_input(protocol_family, m) != 0)
m_freem(m);
- splx(s);
- return (EJUSTRETURN);
- }
-
- IF_ENQUEUE(ifq, m);
- schednetisr(isr);
- splx(s);
return (0);
}
/* ARGSUSED */
static void
-lortrequest(cmd, rt, sa)
- int cmd;
- struct rtentry *rt;
- struct sockaddr *sa;
+lortrequest(
+ __unused int cmd,
+ struct rtentry *rt,
+ __unused struct sockaddr *sa)
{
- if (rt) {
+ if (rt != NULL) {
+ RT_LOCK_ASSERT_HELD(rt);
rt->rt_rmx.rmx_mtu = rt->rt_ifp->if_mtu; /* for ISO */
/*
* For optimal performance, the send and receive buffers
/*
* Process an ioctl request.
*/
-/* ARGSUSED */
-static int
-loioctl(dl_tag, ifp, cmd, data)
- u_long dl_tag;
- register struct ifnet *ifp;
- u_long cmd;
- void *data;
+static errno_t
+loioctl(
+ ifnet_t ifp,
+ u_long cmd,
+ void* data)
{
register struct ifaddr *ifa;
register struct ifreq *ifr = (struct ifreq *)data;
switch (cmd) {
case SIOCSIFADDR:
- ifp->if_flags |= IFF_UP | IFF_RUNNING;
+ ifnet_set_flags(ifp, IFF_UP | IFF_RUNNING, IFF_UP | IFF_RUNNING);
ifa = (struct ifaddr *)data;
+ IFA_LOCK_SPIN(ifa);
ifa->ifa_rtrequest = lortrequest;
+ IFA_UNLOCK(ifa);
/*
* Everything else is done at a higher level.
*/
default:
error = EOPNOTSUPP;
+ break;
}
return (error);
}
#endif /* NLOOP > 0 */
-int lo_shutdown()
+static errno_t lo_attach_proto(ifnet_t ifp, protocol_family_t protocol_family)
{
- return 0;
+ struct ifnet_attach_proto_param_v2 proto;
+ errno_t result = 0;
+
+ bzero(&proto, sizeof(proto));
+ proto.input = lo_input;
+ proto.pre_output = lo_pre_output;
+
+ result = ifnet_attach_protocol_v2(ifp, protocol_family, &proto);
+
+ if (result && result != EEXIST) {
+ printf("lo_attach_proto: ifnet_attach_protocol for %u returned=%d\n",
+ protocol_family, result);
+ }
+
+ return result;
}
-
-void lo_reg_if_mods()
+static void lo_reg_if_mods(void)
{
- struct dlil_ifmod_reg_str lo_ifmod;
-
- bzero(&lo_ifmod, sizeof(lo_ifmod));
- lo_ifmod.add_if = lo_add_if;
- lo_ifmod.del_if = lo_del_if;
- lo_ifmod.add_proto = lo_add_proto;
- lo_ifmod.del_proto = lo_del_proto;
- lo_ifmod.ifmod_ioctl = 0;
- lo_ifmod.shutdown = lo_shutdown;
-
- if (dlil_reg_if_modules(APPLE_IF_FAM_LOOPBACK, &lo_ifmod))
- panic("Couldn't register lo modules\n");
-}
+ int error;
+ /* Register protocol registration functions */
+ if ((error = proto_register_plumber(PF_INET, APPLE_IF_FAM_LOOPBACK, lo_attach_proto, NULL)) != 0)
+ printf("proto_register_plumber failed for AF_INET error=%d\n", error);
-u_long lo_attach_inet(struct ifnet *ifp)
-{
- 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 < lo_count; i++) {
- if ((lo_array[i]) && (lo_array[i]->ifp == ifp)) {
- if (lo_array[i]->protocol_family == PF_INET)
- return lo_array[i]->dl_tag;
- }
- }
-
- TAILQ_INIT(®.demux_desc_head);
- desc.type = DLIL_DESC_RAW;
- desc.variants.bitmask.proto_id_length = 0;
- desc.variants.bitmask.proto_id = 0;
- desc.variants.bitmask.proto_id_mask = 0;
- desc.native_type = (char *) &native;
- TAILQ_INSERT_TAIL(®.demux_desc_head, &desc, next);
- reg.interface_family = ifp->if_family;
- reg.unit_number = ifp->if_unit;
- reg.input = lo_input;
- reg.pre_output = lo_pre_output;
- reg.event = 0;
- reg.offer = 0;
- reg.ioctl = loioctl;
- reg.default_proto = 0;
- reg.protocol_family = PF_INET;
-
- stat = dlil_attach_protocol(®, &dl_tag);
- if (stat) {
- panic("lo_attach_inet can't attach interface\n");
- }
-
- return dl_tag;
-}
-
-u_long lo_attach_inet6(struct ifnet *ifp)
-{
- 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 < lo_count; i++) {
- if ((lo_array[i]) && (lo_array[i]->ifp == ifp)) {
- if (lo_array[i]->protocol_family == PF_INET6)
- return lo_array[i]->dl_tag;
- }
- }
-
- TAILQ_INIT(®.demux_desc_head);
- desc.type = DLIL_DESC_RAW;
- desc.variants.bitmask.proto_id_length = 0;
- desc.variants.bitmask.proto_id = 0;
- desc.variants.bitmask.proto_id_mask = 0;
- desc.native_type = (char *) &native;
- TAILQ_INSERT_TAIL(®.demux_desc_head, &desc, next);
- reg.interface_family = ifp->if_family;
- reg.unit_number = ifp->if_unit;
- reg.input = lo_input;
- reg.pre_output = lo_pre_output;
- reg.event = 0;
- reg.offer = 0;
- reg.ioctl = loioctl;
- reg.default_proto = 0;
- reg.protocol_family = PF_INET6;
-
- stat = dlil_attach_protocol(®, &dl_tag);
- if (stat) {
- panic("lo_attach_inet6 can't attach interface\n");
- }
-
- return dl_tag;
+ if ((error = proto_register_plumber(PF_INET6, APPLE_IF_FAM_LOOPBACK, lo_attach_proto, NULL)) != 0)
+ printf("proto_register_plumber failed for AF_INET6 error=%d\n", error);
}
-
-int lo_set_bpf_tap(struct ifnet *ifp, int mode, int (*bpf_callback)(struct ifnet *, struct mbuf *))
+static errno_t
+lo_set_bpf_tap(
+ ifnet_t ifp,
+ bpf_tap_mode mode,
+ bpf_packet_func bpf_callback)
{
/*
/* ARGSUSED */
void
-loopattach(dummy)
- void *dummy;
+loopattach(void)
{
- register struct ifnet *ifp;
- register int i = 0;
+ struct ifnet_init_params lo_init;
+ errno_t result = 0;
- thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
- lo_reg_if_mods();
+#if NLOOP != 1
+More than one loopback interface is not supported.
+#endif
- for (ifp = loif; i < NLOOP; ifp++) {
- lo_statics[i].bpf_callback = 0;
- lo_statics[i].bpf_mode = BPF_TAP_DISABLE;
- ifp->if_name = "lo";
- ifp->if_family = APPLE_IF_FAM_LOOPBACK;
- ifp->if_unit = i++;
- ifp->if_mtu = LOMTU;
- ifp->if_flags = IFF_LOOPBACK | IFF_MULTICAST;
- ifp->if_ioctl = loioctl;
- ifp->if_set_bpf_tap = lo_set_bpf_tap;
- ifp->if_output = lo_output;
- ifp->if_type = IFT_LOOP;
- ifp->if_hwassist = 0; /* HW cksum on send side breaks Classic loopback */
- dlil_if_attach(ifp);
-#if NBPFILTER > 0
- bpfattach(ifp, DLT_NULL, sizeof(u_int));
+ lo_reg_if_mods();
+
+ lo_statics[0].bpf_callback = 0;
+ lo_statics[0].bpf_mode = BPF_TAP_DISABLE;
+
+ bzero(&lo_init, sizeof(lo_init));
+ lo_init.name = "lo";
+ lo_init.unit = 0;
+ lo_init.family = IFNET_FAMILY_LOOPBACK;
+ lo_init.type = IFT_LOOP;
+ lo_init.output = lo_output;
+ lo_init.demux = lo_demux;
+ lo_init.add_proto = lo_add_proto;
+ lo_init.del_proto = lo_del_proto;
+ lo_init.framer = lo_framer;
+ lo_init.softc = &lo_statics[0];
+ lo_init.ioctl = loioctl;
+ lo_init.set_bpf_tap = lo_set_bpf_tap;
+ result = ifnet_allocate(&lo_init, &lo_ifp);
+ if (result != 0) {
+ printf("ifnet_allocate for lo0 failed - %d\n", result);
+ return;
+ }
+
+ ifnet_set_mtu(lo_ifp, LOMTU);
+ ifnet_set_flags(lo_ifp, IFF_LOOPBACK | IFF_MULTICAST, IFF_LOOPBACK | IFF_MULTICAST);
+ ifnet_set_offload(lo_ifp, IFNET_CSUM_IP | IFNET_CSUM_TCP | IFNET_CSUM_UDP |
+ IFNET_CSUM_TCPIPV6 | IFNET_CSUM_UDPIPV6 | IFNET_IPV6_FRAGMENT |
+ IFNET_CSUM_FRAGMENT | IFNET_IP_FRAGMENT | IFNET_MULTIPAGES);
+ ifnet_set_hdrlen(lo_ifp, sizeof(struct loopback_header));
+ ifnet_set_eflags(lo_ifp, IFEF_SENDLIST, IFEF_SENDLIST);
+
+#if CONFIG_MACF_NET
+ mac_ifnet_label_init(ifp);
#endif
+
+ result = ifnet_attach(lo_ifp, NULL);
+ if (result != 0) {
+ printf("ifnet_attach lo0 failed - %d\n", result);
+ return;
}
- thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
+ bpfattach(lo_ifp, DLT_NULL, sizeof(u_int));
+
+ loopattach_done = 1;
}
projects / apple / xnu.git / blobdiff