xnu-792.6.61.tar.gz

[apple/xnu.git] / bsd / net / ether_inet6_pr_module.c

diff --git a/bsd/net/ether_inet6_pr_module.c b/bsd/net/ether_inet6_pr_module.c
index 65901c1ebaadba989273bf020a6edcfe1fd1600f..1c2175efe32721007a06644b39a66d1b973243ba 100644 (file)
--- a/bsd/net/ether_inet6_pr_module.c
+++ b/bsd/net/ether_inet6_pr_module.c
@@ -3,22 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_LICENSE_HEADER_START@
  * 

- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.

  * 
  * 

- * 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.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This 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,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * 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.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.

  * 
  * @APPLE_LICENSE_HEADER_END@
  */
  * 
  * @APPLE_LICENSE_HEADER_END@
  */


@@ -66,14 +63,15 @@
 #include <sys/socket.h>
 #include <sys/sockio.h>
 #include <sys/sysctl.h>
 #include <sys/socket.h>
 #include <sys/sockio.h>
 #include <sys/sysctl.h>

+#include <kern/lock.h>

 
 #include <net/if.h>
 
 #include <net/if.h>

-#include <net/netisr.h>

 #include <net/route.h>
 #include <net/if_llc.h>
 #include <net/if_dl.h>
 #include <net/if_types.h>
 #include <net/ndrv.h>
 #include <net/route.h>
 #include <net/if_llc.h>
 #include <net/if_dl.h>
 #include <net/if_types.h>
 #include <net/ndrv.h>

+#include <net/kpi_protocol.h>

 
 #include <netinet/in.h>
 #include <netinet/in_var.h>
 
 #include <netinet/in.h>
 #include <netinet/in_var.h>


@@ -107,251 +105,112 @@ extern struct ifqueue pkintrq;
 #include <net/if_vlan_var.h>
 #endif /* NVLAN > 0 */
 
 #include <net/if_vlan_var.h>
 #endif /* NVLAN > 0 */
 

-static u_long lo_dlt = 0;
-static ivedonethis = 0;
-static u_char  etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
-
-#define IFP2AC(IFP) ((struct arpcom *)IFP)
-
-
-
+/* Local function declerations */
+int ether_attach_inet6(struct ifnet *ifp, u_long protocol_family);
+int ether_detach_inet6(struct ifnet *ifp, u_long protocol_family);

 
 /*
  * Process a received Ethernet packet;
  * the packet is in the mbuf chain m without
  * the ether header, which is provided separately.
  */
 
 /*
  * Process a received Ethernet packet;
  * the packet is in the mbuf chain m without
  * the ether header, which is provided separately.
  */

-int
-inet6_ether_input(m, frame_header, ifp, dl_tag, sync_ok)
-    struct mbuf  *m;
-    char         *frame_header;
-    struct ifnet *ifp;
-    u_long          dl_tag;
-    int          sync_ok;
-
+static errno_t
+inet6_ether_input(
+       __unused ifnet_t        ifp,
+       protocol_family_t       protocol,
+       mbuf_t                          packet,
+       __unused char           *header)

 {
 {

-    register struct ether_header *eh = (struct ether_header *) frame_header;
-    register struct ifqueue *inq=0;
-    u_short ether_type;
-    int s;
-    u_int16_t ptype = -1;
-    unsigned char buf[18];
-
-
-
-    if ((ifp->if_flags & IFF_UP) == 0) {
-        m_freem(m);
-        return EJUSTRETURN;
-    }
-
-    ifp->if_lastchange = time;
-
-    if (eh->ether_dhost[0] & 1) {
-       if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost,
-                sizeof(etherbroadcastaddr)) == 0)
-           m->m_flags |= M_BCAST;
-       else
-           m->m_flags |= M_MCAST;
-    }
-    if (m->m_flags & (M_BCAST|M_MCAST))
-       ifp->if_imcasts++;
-
-    ether_type = ntohs(eh->ether_type);
-
-
-    switch (ether_type) {
+       proto_input(protocol, packet);
+       return 0;
+}

 
 

-    case ETHERTYPE_IPV6:
-        schednetisr(NETISR_IPV6);
-        inq = &ip6intrq;
-        break;
+static errno_t
+inet6_ether_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)
+{
+       errno_t result;
+       struct  sockaddr_dl     sdl;
+       register struct mbuf *m = *m0;

 
 

-    default: {
-       return ENOENT;
+       /*
+        * 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);
+       
+       if (result == 0) {
+               *(u_int16_t*)type = htons(ETHERTYPE_IPV6);
+               bcopy(LLADDR(&sdl), edst, sdl.sdl_alen);

        }
        }

-    }

 
 

-    if (inq == 0)
-       return ENOENT;

 
 

-       s = splimp();
-       if (IF_QFULL(inq)) {
-               IF_DROP(inq);
-               m_freem(m);
-               splx(s);
-               return EJUSTRETURN;
-       } else
-               IF_ENQUEUE(inq, m);
-       splx(s);

 
 

-
-    return 0;
+    return result;

 }
 
 }
 

-
-
-
-int
-inet6_ether_pre_output(ifp, m0, dst_netaddr, route, type, edst, dl_tag )
-    struct ifnet    *ifp;
-    struct mbuf     **m0;
-    struct sockaddr *dst_netaddr;
-    caddr_t        route;
-    char           *type;
-    char            *edst;
-    u_long         dl_tag;
+static int
+ether_inet6_resolve_multi(
+       ifnet_t ifp,
+       const struct sockaddr *proto_addr,
+       struct sockaddr_dl *out_ll,
+       size_t  ll_len)

 {
 {

-    struct rtentry  *rt0 = (struct rtentry *) route;
-    int s;
-    register struct mbuf *m = *m0;
-    register struct rtentry *rt;
-    register struct ether_header *eh;
-    int hlen;  /* link layer header lenght */
-    struct arpcom *ac = IFP2AC(ifp);
-
-
-
-    if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 
-       return ENETDOWN;
-
-    rt = rt0;
-    if (rt) {
-       if ((rt->rt_flags & RTF_UP) == 0) {
-           rt0 = rt = rtalloc1(dst_netaddr, 1, 0UL);
-           if (rt0)
-               rtunref(rt);
-           else
-               return EHOSTUNREACH;
-       }
-
-       if (rt->rt_flags & RTF_GATEWAY) {
-           if (rt->rt_gwroute == 0)
-               goto lookup;
-           if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
-               rtfree(rt); rt = rt0;
-           lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1,
-                                             0UL);
-               if ((rt = rt->rt_gwroute) == 0)
-                   return (EHOSTUNREACH);
-           }
-       }
-
+       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 (rt->rt_flags & RTF_REJECT)
-           if (rt->rt_rmx.rmx_expire == 0 ||
-               time_second < rt->rt_rmx.rmx_expire)
-               return (rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
-    }
-
-    hlen = ETHER_HDR_LEN;
-
-    /*
-     * Tell ether_frameout it's ok to loop packet unless negated below.
-     */
-    m->m_flags |= M_LOOP;
-
-    switch (dst_netaddr->sa_family) {
-
-
-    case AF_INET6:
-        if (!nd6_storelladdr(&ac->ac_if, rt, m, dst_netaddr, (u_char *)edst)) {
-             /* this must be impossible, so we bark */
-             printf("nd6_storelladdr failed\n");
-             return(0);
-                }
-       *(u_short *)type = htons(ETHERTYPE_IPV6);
-       break;
-
-    default:
-       printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
-              dst_netaddr->sa_family);
-
-        return EAFNOSUPPORT;
-    }
-
-    return (0);
+       if (proto_addr->sa_family != AF_INET6)
+               return EAFNOSUPPORT;
+       
+       if (proto_addr->sa_len < sizeof(struct sockaddr_in6))
+               return EINVAL;
+       
+       if (ll_len < minsize)
+               return EMSGSIZE;
+       
+       bzero(out_ll, minsize);
+       out_ll->sdl_len = minsize;
+       out_ll->sdl_family = AF_LINK;
+       out_ll->sdl_index = ifp->if_index;
+       out_ll->sdl_type = IFT_ETHER;
+       out_ll->sdl_nlen = 0;
+       out_ll->sdl_alen = ETHER_ADDR_LEN;
+       out_ll->sdl_slen = 0;
+       ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, LLADDR(out_ll));
+       
+       return 0;

 }
 
 
 }
 
 

-int
-ether_inet6_prmod_ioctl(dl_tag, ifp, command, data)
-    u_long       dl_tag;
-    struct ifnet *ifp;
-    int          command;
-    caddr_t      data;
+static errno_t
+ether_inet6_prmod_ioctl(
+       ifnet_t                                         ifp,
+       __unused protocol_family_t      protocol_family,
+       u_int32_t                                       command,
+       void*                                           data)

 {
 {

-    struct ifaddr *ifa = (struct ifaddr *) data;

     struct ifreq *ifr = (struct ifreq *) data;
     struct ifreq *ifr = (struct ifreq *) data;

-    struct rslvmulti_req *rsreq = (struct rslvmulti_req *) data;

     int error = 0;
     int error = 0;

-    boolean_t funnel_state;
-    struct arpcom *ac = (struct arpcom *) ifp;
-    struct sockaddr_dl *sdl;
-    struct sockaddr_in *sin;
-    struct sockaddr_in6 *sin6;
-
-    u_char *e_addr;
-

 
     switch (command) {
 
     switch (command) {

-    case SIOCRSLVMULTI: {
-       switch(rsreq->sa->sa_family) {
-
-        case AF_INET6:
-                sin6 = (struct sockaddr_in6 *)rsreq->sa;
-                if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
-                        /*
-                         * An IP6 address of 0 means listen to all
-                         * of the Ethernet multicast address used for IP6.
-                         * (This is used for multicast routers.)
-                         */
-                        ifp->if_flags |= IFF_ALLMULTI;
-                        *rsreq->llsa = 0;
-                        return 0;
-                }
-                MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
-                       M_WAITOK);
-                sdl->sdl_len = sizeof *sdl;
-                sdl->sdl_family = AF_LINK;
-                sdl->sdl_index = ifp->if_index;
-                sdl->sdl_type = IFT_ETHER;
-                sdl->sdl_nlen = 0;
-                sdl->sdl_alen = ETHER_ADDR_LEN;
-                sdl->sdl_slen = 0;
-                e_addr = LLADDR(sdl);
-                ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr);
-#ifndef __APPLE__
-                printf("ether_resolvemulti AF_INET6 Adding %x:%x:%x:%x:%x:%x\n",
-                                e_addr[0], e_addr[1], e_addr[2], e_addr[3], e_addr[4], e_addr[5]);
-#endif
-                *rsreq->llsa = (struct sockaddr *)sdl;
-                return 0;
-
-       default:
-               /* 
-                * Well, the text isn't quite right, but it's the name
-                * that counts...
-                */
-               return EAFNOSUPPORT;
-       }
-
-    }

     case SIOCSIFADDR:
         if ((ifp->if_flags & IFF_RUNNING) == 0) {
     case SIOCSIFADDR:
         if ((ifp->if_flags & IFF_RUNNING) == 0) {

-             ifp->if_flags |= IFF_UP;
+             ifnet_set_flags(ifp, IFF_UP, IFF_UP);

              dlil_ioctl(0, ifp, SIOCSIFFLAGS, (caddr_t) 0);
         }
 
        break;
 
     case SIOCGIFADDR:
              dlil_ioctl(0, ifp, SIOCSIFFLAGS, (caddr_t) 0);
         }
 
        break;
 
     case SIOCGIFADDR:

-    {
-       struct sockaddr *sa;
-
-       sa = (struct sockaddr *) & ifr->ifr_data;
-       bcopy(IFP2AC(ifp)->ac_enaddr,
-             (caddr_t) sa->sa_data, ETHER_ADDR_LEN);
-    }
+       ifnet_lladdr_copy_bytes(ifp, ifr->ifr_addr.sa_data, ETHER_ADDR_LEN);

     break;
 
     case SIOCSIFMTU:
     break;
 
     case SIOCSIFMTU:


@@ -368,62 +227,48 @@ ether_inet6_prmod_ioctl(dl_tag, ifp, command, data)
     return (error);
 }
 
     return (error);
 }
 

-
-
-
-
-u_long  ether_attach_inet6(struct ifnet *ifp)
+int
+ether_attach_inet6(
+       struct ifnet    *ifp,
+       __unused u_long protocol_family)

 {
 {

-    struct dlil_proto_reg_str   reg;
-    struct dlil_demux_desc      desc;
-    u_long                     ip_dl_tag=0;
-    u_short en_6native=ETHERTYPE_IPV6;
-    int   stat;
-    int i;
-
-
-    stat = dlil_find_dltag(ifp->if_family, ifp->if_unit, PF_INET6, &ip_dl_tag);
-    if (stat == 0)
-        return ip_dl_tag;
-
-    TAILQ_INIT(&reg.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 *) &en_6native;
-    TAILQ_INSERT_TAIL(&reg.demux_desc_head, &desc, next);
-    reg.interface_family = ifp->if_family;
-    reg.unit_number      = ifp->if_unit;
-    reg.input            = inet6_ether_input;
-    reg.pre_output       = inet6_ether_pre_output;
-    reg.event            = 0;
-    reg.offer            = 0;
-    reg.ioctl            = ether_inet6_prmod_ioctl;
-    reg.default_proto    = 0;
-    reg.protocol_family  = PF_INET6;
-
-    stat = dlil_attach_protocol(&reg, &ip_dl_tag);
-    if (stat) {
-       printf("WARNING: ether_attach_inet6 can't attach ip to interface\n");
-       return stat;
-    }
-
-    return ip_dl_tag;
+       struct ifnet_attach_proto_param proto;
+       struct ifnet_demux_desc demux[1];
+       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;
+       demux[0].datalen = sizeof(en_6native);
+       proto.demux_list = demux;
+       proto.demux_count = 1;
+       proto.input = inet6_ether_input;
+       proto.pre_output = inet6_ether_pre_output;
+       proto.ioctl = ether_inet6_prmod_ioctl;
+       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);
+       }
+       
+       return error;

 }
 
 }
 

-int  ether_detach_inet6(struct ifnet *ifp)
+int
+ether_detach_inet6(
+       struct ifnet    *ifp,
+       u_long                  protocol_family)

 {
 {

-    u_long      ip_dl_tag = 0;
-    int         stat;
-
-    stat = dlil_find_dltag(ifp->if_family, ifp->if_unit, PF_INET6, &ip_dl_tag);
-    if (stat == 0) {
-        stat = dlil_detach_protocol(ip_dl_tag);
-        if (stat) {
-            printf("WARNING: ether_detach_inet6 can't detach ip6 from interface\n");
-        }
-    }
-    return stat;
+    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);
+       }
+
+    return error;

 }
 
 }