X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..743345f9a4b36f7e2f9ba37691e70c50baecb56e:/bsd/netinet/ip6.h

diff --git a/bsd/netinet/ip6.h b/bsd/netinet/ip6.h
index 38060eb93..a4c4ea92e 100644
--- a/bsd/netinet/ip6.h
+++ b/bsd/netinet/ip6.h
@@ -1,16 +1,19 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2016 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
@@ -20,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*	$KAME: ip6.h,v 1.18 2001/03/29 05:34:30 itojun Exp $*/
 
@@ -136,6 +139,12 @@ struct ip6_hdr {
 #define IP6TOS_ECT		0x02	/* ECN-capable transport */
 #endif
 
+/*
+ * To access the 6 bits of the DSCP value in the 32 bits ip6_flow field
+ */
+#define	IP6FLOW_DSCP_MASK	0x0fc00000
+#define	IP6FLOW_DSCP_SHIFT	22
+
 /*
  * Extension Headers
  */
@@ -167,7 +176,10 @@ struct ip6_dest {
 #define IP6OPT_JUMBO		0xC2	/* 11 0 00010 = 194 */
 #define IP6OPT_NSAP_ADDR	0xC3	/* 11 0 00011 */
 #define IP6OPT_TUNNEL_LIMIT	0x04	/* 00 0 00100 */
+#ifndef KERNEL_PRIVATE
 #define IP6OPT_RTALERT		0x05	/* 00 0 00101 (KAME definition) */
+#endif
+#define IP6OPT_ROUTER_ALERT	0x05	/* 00 0 00101 (RFC3542, recommended) */
 
 #define IP6OPT_RTALERT_LEN	4
 #define IP6OPT_RTALERT_MLD	0	/* Datagram contains an MLD message */
@@ -175,10 +187,6 @@ struct ip6_dest {
 #define IP6OPT_RTALERT_ACTNET	2 	/* contains an Active Networks msg */
 #define IP6OPT_MINLEN		2
 
-#define IP6OPT_BINDING_UPDATE	0xc6	/* 11 0 00110 */
-#define IP6OPT_BINDING_ACK	0x07	/* 00 0 00111 */
-#define IP6OPT_BINDING_REQ	0x08	/* 00 0 01000 */
-#define IP6OPT_HOME_ADDRESS	0xc9	/* 11 0 01001 */
 #define IP6OPT_EID		0x8a	/* 10 0 01010 */
 
 #define IP6OPT_TYPE(o)		((o) & 0xC0)
@@ -189,8 +197,56 @@ struct ip6_dest {
 
 #define IP6OPT_MUTABLE		0x20
 
+/* IPv6 options: common part */
+struct ip6_opt {
+	u_int8_t ip6o_type;
+	u_int8_t ip6o_len;
+} __attribute__((__packed__));
+
+/* Jumbo Payload Option */
+struct ip6_opt_jumbo {
+	u_int8_t ip6oj_type;
+	u_int8_t ip6oj_len;
+	u_int8_t ip6oj_jumbo_len[4];
+} __attribute__((__packed__));
 #define IP6OPT_JUMBO_LEN	6
 
+/* NSAP Address Option */
+struct ip6_opt_nsap {
+	u_int8_t ip6on_type;
+	u_int8_t ip6on_len;
+	u_int8_t ip6on_src_nsap_len;
+	u_int8_t ip6on_dst_nsap_len;
+	/* followed by source NSAP */
+	/* followed by destination NSAP */
+}__attribute__((__packed__));
+
+/* Tunnel Limit Option */
+struct ip6_opt_tunnel {
+	u_int8_t ip6ot_type;
+	u_int8_t ip6ot_len;
+	u_int8_t ip6ot_encap_limit;
+}__attribute__((__packed__));
+
+/* Router Alert Option */
+struct ip6_opt_router {
+	u_int8_t ip6or_type;
+	u_int8_t ip6or_len;
+	u_int8_t ip6or_value[2];
+}__attribute__((__packed__));
+/* Router alert values (in network byte order) */
+#if BYTE_ORDER == BIG_ENDIAN
+#define IP6_ALERT_MLD	0x0000
+#define IP6_ALERT_RSVP	0x0001
+#define IP6_ALERT_AN	0x0002
+#else
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define IP6_ALERT_MLD	0x0000
+#define IP6_ALERT_RSVP	0x0100
+#define IP6_ALERT_AN	0x0200
+#endif /* LITTLE_ENDIAN */
+#endif
+
 /* Routing header */
 struct ip6_rthdr {
 	u_int8_t  ip6r_nxt;	/* next header */
@@ -232,16 +288,16 @@ struct ip6_frag {
 /*
  * Internet implementation parameters.
  */
-#define IPV6_MAXHLIM	255	/* maximun hoplimit */
+#define IPV6_MAXHLIM	255	/* maximum hoplimit */
 #define IPV6_DEFHLIM	64	/* default hlim */
-#define IPV6_FRAGTTL	120	/* ttl for fragment packets, in slowtimo tick */
-#define IPV6_HLIMDEC	1	/* subtracted when forwaeding */
+#define IPV6_FRAGTTL	60	/* ttl for fragment packets (seconds) */
+#define IPV6_HLIMDEC	1	/* subtracted when forwarding */
 
 #define IPV6_MMTU	1280	/* minimal MTU and reassembly. 1024 + 256 */
 #define IPV6_MAXPACKET	65535	/* ip6 max packet size without Jumbo payload*/
+#define IPV6_MAXOPTHDR	2048	/* max option header size, 256 64-bit words */
 
-#ifdef KERNEL
-#ifdef __APPLE_API_PRIVATE
+#ifdef BSD_KERNEL_PRIVATE
 /*
  * IP6_EXTHDR_CHECK ensures that region between the IP6 header and the
  * target header (including IPv6 itself, extension headers and
@@ -251,25 +307,27 @@ struct ip6_frag {
  * supposed to never be matched but is prepared just in case.
  */
 
-#define IP6_EXTHDR_CHECK(m, off, hlen, ret)				\
+#define IP6_EXTHDR_CHECK(m, off, hlen, action)				\
 do {									\
     if ((m)->m_next != NULL) {						\
 	if (((m)->m_flags & M_LOOP) &&					\
 	    ((m)->m_len < (off) + (hlen)) &&				\
 	    (((m) = m_pullup((m), (off) + (hlen))) == NULL)) {		\
 		ip6stat.ip6s_exthdrtoolong++;				\
-		return ret;						\
+		action;							\
 	} else if ((m)->m_flags & M_EXT) {				\
 		if ((m)->m_len < (off) + (hlen)) {			\
 			ip6stat.ip6s_exthdrtoolong++;			\
 			m_freem(m);					\
-			return ret;					\
+			(m) = NULL;					\
+			action;						\
 		}							\
 	} else {							\
 		if ((m)->m_len < (off) + (hlen)) {			\
 			ip6stat.ip6s_exthdrtoolong++;			\
 			m_freem(m);					\
-			return ret;					\
+			(m) = NULL;					\
+			action;						\
 		}							\
 	}								\
     } else {								\
@@ -277,7 +335,8 @@ do {									\
 		ip6stat.ip6s_tooshort++;				\
 		in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_truncated);	\
 		m_freem(m);						\
-		return ret;						\
+		(m) = NULL;						\
+		action;							\
 	}								\
     }									\
 } while (0)
@@ -289,46 +348,12 @@ do {									\
  * with type "typ".
  * IP6_EXTHDR_GET0 does the same, except that it aligns the structure at the
  * very top of mbuf.  GET0 is likely to make memory copy than GET.
- *
- * XXX we're now testing this, needs m_pulldown()
  */
-#define IP6_EXTHDR_GET(val, typ, m, off, len) \
-do {									\
-	struct mbuf *t;							\
-	int tmp;							\
-	if ((m)->m_len >= (off) + (len))				\
-		(val) = (typ)(mtod((m), caddr_t) + (off));		\
-	else {								\
-		t = m_pulldown((m), (off), (len), &tmp);		\
-		if (t) {						\
-			if (t->m_len < tmp + (len))			\
-				panic("m_pulldown malfunction");	\
-			(val) = (typ)(mtod(t, caddr_t) + tmp);		\
-		} else {						\
-			(val) = (typ)NULL;				\
-			(m) = NULL;					\
-		}							\
-	}								\
-} while (0)
+#define IP6_EXTHDR_GET(val, typ, m, off, len)				\
+	M_STRUCT_GET(val, typ, m, off, len)
 
-#define IP6_EXTHDR_GET0(val, typ, m, off, len) \
-do {									\
-	struct mbuf *t;							\
-	if ((off) == 0)							\
-		(val) = (typ)mtod(m, caddr_t);				\
-	else {								\
-		t = m_pulldown((m), (off), (len), NULL);		\
-		if (t) {						\
-			if (t->m_len < (len))				\
-				panic("m_pulldown malfunction");	\
-			(val) = (typ)mtod(t, caddr_t);			\
-		} else {						\
-			(val) = (typ)NULL;				\
-			(m) = NULL;					\
-		}							\
-	}								\
-} while (0)
-#endif /* __APPLE_API_PRIVATE */
-#endif /*KERNEL*/
+#define IP6_EXTHDR_GET0(val, typ, m, off, len)				\
+	M_STRUCT_GET0(val, typ, m, off, len)
 
-#endif /* not _NETINET_IP6_H_ */
+#endif /* BSD_KERNEL_PRIVATE */
+#endif /* !_NETINET_IP6_H_ */