/*
- * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2013 Apple 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
* 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
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
*
*/
-
-
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
-#include <kern/lock.h>
+#include <sys/socketvar.h>
+#include <net/dlil.h>
#include <net/if.h>
#include <net/route.h>
#include <net/if_llc.h>
#include <net/if_types.h>
#include <net/ndrv.h>
#include <net/kpi_protocol.h>
+#include <net/dlil.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
-#if INET6
#include <netinet6/nd6.h>
#include <netinet6/in6_ifattach.h>
-#endif
-
-
-
-#include <sys/socketvar.h>
-
-#include <net/dlil.h>
-
-
-#if LLC && CCITT
-extern struct ifqueue pkintrq;
-#endif
-
-
-#if BRIDGE
-#include <net/bridge.h>
-#endif
+#include <netinet6/ip6_var.h>
/* #include "vlan.h" */
#if NVLAN > 0
#include <net/ether_if_module.h>
+static const u_char etherip6allnodes[ETHER_ADDR_LEN] =
+{ 0x33, 0x33, 0, 0, 0, 1 };
+
/*
* Process a received Ethernet packet;
* the packet is in the mbuf chain m without
* the ether header, which is provided separately.
*/
static errno_t
-ether_inet6_input(
- __unused ifnet_t ifp,
- protocol_family_t protocol,
- mbuf_t packet,
- __unused char *header)
+ether_inet6_input(ifnet_t ifp, protocol_family_t protocol,
+ mbuf_t packet, char *header)
{
- errno_t error;
+#pragma unused(ifp, protocol)
+ struct ether_header *eh = (struct ether_header *)(void *)header;
+ u_int16_t ether_type;
+
+ bcopy(&eh->ether_type, ðer_type, sizeof(ether_type));
+
+ if (ether_type == htons(ETHERTYPE_IPV6)) {
+ struct ifnet *mifp;
+ /*
+ * Trust the ifp in the mbuf, rather than ifproto's
+ * since the packet could have been injected via
+ * a dlil_input_packet_list() using an ifp that is
+ * different than the one where the packet really
+ * came from.
+ */
+ mifp = mbuf_pkthdr_rcvif(packet);
+
+ /* Update L2 reachability record, if present (and not bcast) */
+ if (bcmp(eh->ether_shost, etherbroadcastaddr,
+ ETHER_ADDR_LEN) != 0) {
+ nd6_llreach_set_reachable(mifp, eh->ether_shost,
+ ETHER_ADDR_LEN);
+ }
+
+ /* Save the Ethernet source address for all-nodes multicasts */
+ if (!bcmp(eh->ether_dhost, etherip6allnodes, ETHER_ADDR_LEN)) {
+ struct ip6aux *ip6a;
+
+ ip6a = ip6_addaux(packet);
+ if (ip6a) {
+ ip6a->ip6a_flags |= IP6A_HASEEN;
+ bcopy(eh->ether_shost, ip6a->ip6a_ehsrc,
+ ETHER_ADDR_LEN);
+ }
+ }
- if ((error = proto_input(protocol, packet)))
+ if (proto_input(protocol, packet) != 0) {
+ m_freem(packet);
+ }
+ } else {
m_freem(packet);
- return error;
+ }
+
+ return EJUSTRETURN;
}
static errno_t
-ether_inet6_pre_output(
- ifnet_t ifp,
- __unused protocol_family_t protocol_family,
- mbuf_t *m0,
- const struct sockaddr *dst_netaddr,
- void *route,
- char *type,
- char *edst)
+ether_inet6_pre_output(ifnet_t ifp, protocol_family_t protocol_family,
+ mbuf_t *m0, const struct sockaddr *dst_netaddr, void *route,
+ char *type, char *edst)
{
- errno_t result;
- struct sockaddr_dl sdl;
- register struct mbuf *m = *m0;
+#pragma unused(protocol_family)
+ errno_t result;
+ struct sockaddr_dl sdl = {};
+ struct mbuf *m = *m0;
/*
* Tell ether_frameout it's ok to loop packet if necessary
*/
m->m_flags |= M_LOOP;
-
- result = nd6_lookup_ipv6(ifp, (const struct sockaddr_in6*)dst_netaddr,
- &sdl, sizeof(sdl), route, *m0);
-
+
+ result = nd6_lookup_ipv6(ifp, (const struct sockaddr_in6 *)
+ (uintptr_t)(size_t)dst_netaddr, &sdl, sizeof(sdl), route, *m0);
+
if (result == 0) {
- *(u_int16_t*)type = htons(ETHERTYPE_IPV6);
+ u_int16_t ethertype_ipv6 = htons(ETHERTYPE_IPV6);
+
+ bcopy(ðertype_ipv6, type, sizeof(ethertype_ipv6));
bcopy(LLADDR(&sdl), edst, sdl.sdl_alen);
}
-
-
- return result;
+ return result;
}
static int
-ether_inet6_resolve_multi(
- ifnet_t ifp,
- const struct sockaddr *proto_addr,
- struct sockaddr_dl *out_ll,
- size_t ll_len)
+ether_inet6_resolve_multi(ifnet_t ifp, const struct sockaddr *proto_addr,
+ struct sockaddr_dl *out_ll, size_t ll_len)
{
- static const size_t minsize = offsetof(struct sockaddr_dl, sdl_data[0]) + ETHER_ADDR_LEN;
- const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6*)proto_addr;
-
- if (proto_addr->sa_family != AF_INET6)
+ static const size_t minsize =
+ offsetof(struct sockaddr_dl, sdl_data[0]) + ETHER_ADDR_LEN;
+ const struct sockaddr_in6 *sin6 =
+ (const struct sockaddr_in6 *)(uintptr_t)(size_t)proto_addr;
+
+ if (proto_addr->sa_family != AF_INET6) {
return EAFNOSUPPORT;
-
- if (proto_addr->sa_len < sizeof(struct sockaddr_in6))
+ }
+
+ if (proto_addr->sa_len < sizeof(struct sockaddr_in6)) {
return EINVAL;
-
- if (ll_len < minsize)
+ }
+
+ if (ll_len < minsize) {
return EMSGSIZE;
-
+ }
+
bzero(out_ll, minsize);
out_ll->sdl_len = minsize;
out_ll->sdl_family = AF_LINK;
out_ll->sdl_alen = ETHER_ADDR_LEN;
out_ll->sdl_slen = 0;
ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, LLADDR(out_ll));
-
+
return 0;
}
-
static errno_t
-ether_inet6_prmod_ioctl(
- ifnet_t ifp,
- __unused protocol_family_t protocol_family,
- u_long command,
- void *data)
+ether_inet6_prmod_ioctl(ifnet_t ifp, protocol_family_t protocol_family,
+ u_long command, void *data)
{
- struct ifreq *ifr = (struct ifreq *) data;
- int error = 0;
+#pragma unused(protocol_family)
+ int error = 0;
switch (command) {
- case SIOCSIFADDR:
+ case SIOCSIFADDR: /* struct ifaddr pointer */
+ /*
+ * Note: caller of ifnet_ioctl() passes in pointer to
+ * struct ifaddr as parameter to SIOCSIFADDR, for legacy
+ * reasons.
+ */
if ((ifp->if_flags & IFF_RUNNING) == 0) {
ifnet_set_flags(ifp, IFF_UP, IFF_UP);
ifnet_ioctl(ifp, 0, SIOCSIFFLAGS, NULL);
}
break;
- case SIOCGIFADDR:
- ifnet_lladdr_copy_bytes(ifp, ifr->ifr_addr.sa_data, ETHER_ADDR_LEN);
- break;
+ case SIOCGIFADDR: { /* struct ifreq */
+ struct ifreq *ifr = (struct ifreq *)(void *)data;
+ (void) ifnet_guarded_lladdr_copy_bytes(ifp,
+ ifr->ifr_addr.sa_data, ETHER_ADDR_LEN);
+ break;
+ }
- default:
- error = EOPNOTSUPP;
- break;
- }
- return (error);
+ default:
+ error = EOPNOTSUPP;
+ break;
+ }
+ return error;
}
errno_t
-ether_attach_inet6(
- struct ifnet *ifp,
- __unused protocol_family_t protocol_family)
+ether_attach_inet6(struct ifnet *ifp, protocol_family_t protocol_family)
{
- struct ifnet_attach_proto_param proto;
+#pragma unused(protocol_family)
+ struct ifnet_attach_proto_param proto;
struct ifnet_demux_desc demux[1];
- u_short en_6native=htons(ETHERTYPE_IPV6);
- errno_t error;
-
+ u_short en_6native = htons(ETHERTYPE_IPV6);
+ errno_t error;
+
bzero(&proto, sizeof(proto));
demux[0].type = DLIL_DESC_ETYPE2;
demux[0].data = &en_6native;
proto.resolve = ether_inet6_resolve_multi;
error = ifnet_attach_protocol(ifp, protocol_family, &proto);
if (error && error != EEXIST) {
- printf("WARNING: ether_attach_inet6 can't attach ipv6 to %s%d\n",
- ifp->if_name, ifp->if_unit);
+ printf("WARNING: %s can't attach ipv6 to %s\n", __func__,
+ if_name(ifp));
}
-
+
return error;
}
void
-ether_detach_inet6(
- struct ifnet *ifp,
- protocol_family_t protocol_family)
+ether_detach_inet6(struct ifnet *ifp, protocol_family_t protocol_family)
{
- errno_t error;
-
- error = ifnet_detach_protocol(ifp, protocol_family);
- if (error && error != ENOENT) {
- printf("WARNING: ether_detach_inet6 can't detach ipv6 from %s%d\n",
- ifp->if_name, ifp->if_unit);
- }
+ (void) ifnet_detach_protocol(ifp, protocol_family);
}
-
projects / apple / xnu.git / blobdiff