xnu-1228.0.2.tar.gz

[apple/xnu.git] / bsd / netinet / ip_encap.c

diff --git a/bsd/netinet/ip_encap.c b/bsd/netinet/ip_encap.c
index 9517bbb0595a9dbb271860b2c4755e7ed58ba812..6dd02fe9ea9de87a8ece2ee08a3ac60f1706d76d 100644 (file)
--- a/bsd/netinet/ip_encap.c
+++ b/bsd/netinet/ip_encap.c
@@ -1,23 +1,29 @@
 /*
- * 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@
  * 
- * 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. 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.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*     $FreeBSD: src/sys/netinet/ip_encap.c,v 1.1.2.2 2001/07/03 11:01:46 ume Exp $    */
 /*     $KAME: ip_encap.c,v 1.41 2001/03/15 08:35:08 itojun Exp $       */
@@ -345,9 +351,7 @@ encap_attach(af, proto, sp, sm, dp, dm, psw, arg)
 {
        struct encaptab *ep;
        int error;
-       int s;
 
-       s = splnet();
        /* sanity check on args */
        if (sp->sa_len > sizeof(ep->src) || dp->sa_len > sizeof(ep->dst)) {
                error = EINVAL;
@@ -400,11 +404,9 @@ encap_attach(af, proto, sp, sm, dp, dm, psw, arg)
        encap_add(ep);
 
        error = 0;
-       splx(s);
        return ep;
 
 fail:
-       splx(s);
        return NULL;
 }
 
@@ -418,9 +420,7 @@ encap_attach_func(af, proto, func, psw, arg)
 {
        struct encaptab *ep;
        int error;
-       int s;
 
-       s = splnet();
        /* sanity check on args */
        if (!func) {
                error = EINVAL;
@@ -443,11 +443,9 @@ encap_attach_func(af, proto, func, psw, arg)
        encap_add(ep);
 
        error = 0;
-       splx(s);
        return ep;
 
 fail:
-       splx(s);
        return NULL;
 }
 
@@ -522,43 +520,42 @@ mask_match(ep, sp, dp)
                return 0;
 }
 
+struct encaptabtag {
+       void*                   *arg;
+};
+
 static void
-encap_fillarg(m, ep)
-       struct mbuf *m;
-       const struct encaptab *ep;
+encap_fillarg(
+       struct mbuf *m,
+       const struct encaptab *ep)
 {
-#if 0
-       m->m_pkthdr.aux = ep->arg;
-#else
-       struct mbuf *n;
-
-       n = m_aux_add(m, AF_INET, IPPROTO_IPV4);
-       if (n) {
-               *mtod(n, void **) = ep->arg;
-               n->m_len = sizeof(void *);
+       struct m_tag    *tag;
+       struct encaptabtag *et;
+       
+       tag = m_tag_alloc(KERNEL_MODULE_TAG_ID, KERNEL_TAG_TYPE_ENCAP,
+                                         sizeof(struct encaptabtag), M_WAITOK);
+       
+       if (tag != NULL) {
+               et = (struct encaptabtag*)(tag + 1);
+               et->arg = ep->arg;
+               m_tag_prepend(m, tag);
        }
-#endif
 }
 
 void *
 encap_getarg(m)
        struct mbuf *m;
 {
-       void *p;
-#if 0
-       p = m->m_pkthdr.aux;
-       m->m_pkthdr.aux = NULL;
-       return p;
-#else
-       struct mbuf *n;
-
-       p = NULL;
-       n = m_aux_find(m, AF_INET, IPPROTO_IPV4);
-       if (n) {
-               if (n->m_len == sizeof(void *))
-                       p = *mtod(n, void **);
-               m_aux_delete(m, n);
+       struct m_tag    *tag;
+       struct encaptabtag *et;
+       void *p = NULL;
+       
+       tag = m_tag_locate(m, KERNEL_MODULE_TAG_ID, KERNEL_TAG_TYPE_ENCAP, NULL);
+       if (tag) {
+               et = (struct encaptabtag*)(tag + 1);
+               p = et->arg;
+               m_tag_delete(m, tag);
        }
+       
        return p;
-#endif
 }