/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2016 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@
*/
-/* $KAME: ip6.h,v 1.6 2000/02/26 12:53:07 jinmei Exp $ */
+/* $KAME: ip6.h,v 1.18 2001/03/29 05:34:30 itojun Exp $*/
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
#ifndef _NETINET_IP6_H_
#define _NETINET_IP6_H_
+#include <sys/appleapiopts.h>
/*
* Definition for internet protocol version 6.
} ip6_ctlun;
struct in6_addr ip6_src; /* source address */
struct in6_addr ip6_dst; /* destination address */
-};
+} __attribute__((__packed__));
#define ip6_vfc ip6_ctlun.ip6_un2_vfc
#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow
#if BYTE_ORDER == BIG_ENDIAN
#define IPV6_FLOWINFO_MASK 0x0fffffff /* flow info (28 bits) */
#define IPV6_FLOWLABEL_MASK 0x000fffff /* flow label (20 bits) */
+#define IPV6_FLOW_ECN_MASK 0x00300000 /* the 2 ECN bits */
#else
#if BYTE_ORDER == LITTLE_ENDIAN
#define IPV6_FLOWINFO_MASK 0xffffff0f /* flow info (28 bits) */
#define IPV6_FLOWLABEL_MASK 0xffff0f00 /* flow label (20 bits) */
+#define IPV6_FLOW_ECN_MASK 0x00003000 /* the 2 ECN bits */
#endif /* LITTLE_ENDIAN */
#endif
#if 1
#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
*/
struct ip6_ext {
- u_char ip6e_nxt;
- u_char ip6e_len;
-};
+ u_int8_t ip6e_nxt;
+ u_int8_t ip6e_len;
+} __attribute__((__packed__));
/* Hop-by-Hop options header */
/* XXX should we pad it to force alignment on an 8-byte boundary? */
u_int8_t ip6h_nxt; /* next header */
u_int8_t ip6h_len; /* length in units of 8 octets */
/* followed by options */
-};
+} __attribute__((__packed__));
/* Destination options header */
/* XXX should we pad it to force alignment on an 8-byte boundary? */
u_int8_t ip6d_nxt; /* next header */
u_int8_t ip6d_len; /* length in units of 8 octets */
/* followed by options */
-};
+} __attribute__((__packed__));
/* Option types and related macros */
#define IP6OPT_PAD1 0x00 /* 00 0 00000 */
#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) */
-#define IP6OPT_ROUTER_ALERT 0x05 /* (2292bis def, recommended) */
+#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 */
#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_EID 0x8a /* 10 0 01010 */
#define IP6OPT_TYPE(o) ((o) & 0xC0)
#define IP6OPT_TYPE_SKIP 0x00
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];
-};
-#define IP6OPT_JUMBO_LEN 6
+} __attribute__((__packed__));
+#define IP6OPT_JUMBO_LEN 6
/* NSAP Address Option */
struct ip6_opt_nsap {
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
#endif /* LITTLE_ENDIAN */
#endif
-/* Binding Update Option */
-struct ip6_opt_binding_update {
- u_int8_t ip6ou_type;
- u_int8_t ip6ou_len;
- u_int8_t ip6ou_flags;
- u_int8_t ip6ou_prefixlen;
- u_int8_t ip6ou_seqno[2];
- u_int8_t ip6ou_lifetime[4];
- u_int8_t ip6ou_coa[16];/* Optional based on flags */
- /* followed by sub-options */
-};
-
-/* Binding Update Flags */
-#define IP6_BUF_ACK 0x80 /* Request a binding ack */
-#define IP6_BUF_HOME 0x40 /* Home Registration */
-#define IP6_BUF_COA 0x20 /* Care-of-address present in option */
-#define IP6_BUF_ROUTER 0x10 /* Sending mobile node is a router */
-
-/* Binding Ack Option */
-struct ip6_opt_binding_ack {
- u_int8_t ip6oa_type;
- u_int8_t ip6oa_len;
- u_int8_t ip6oa_status;
- u_int8_t ip6oa_seqno[2];
- u_int8_t ip6oa_lifetime[4];
- u_int8_t ip6oa_refresh[4];
- /* followed by sub-options */
-};
-
-/* Binding Request Option */
-struct ip6_opt_binding_request {
- u_int8_t ip6or_type;
- u_int8_t ip6or_len;
- /* followed by sub-options */
-};
-
-/* Home Address Option */
-struct ip6_opt_home_address {
- u_int8_t ip6oh_type;
- u_int8_t ip6oh_len;
- u_int8_t ip6oh_addr[16];/* Home Address */
- /* followed by sub-options */
-};
-
/* Routing header */
struct ip6_rthdr {
u_int8_t ip6r_nxt; /* next header */
u_int8_t ip6r_type; /* routing type */
u_int8_t ip6r_segleft; /* segments left */
/* followed by routing type specific data */
-};
+} __attribute__((__packed__));
/* Type 0 Routing header */
struct ip6_rthdr0 {
u_int8_t ip6r0_len; /* length in units of 8 octets */
u_int8_t ip6r0_type; /* always zero */
u_int8_t ip6r0_segleft; /* segments left */
- u_int32_t ip6r0_reserved; /* reserved field */
- /* followed by up to 127 struct in6_addr */
-
-#ifdef COMPAT_RFC2292
- struct in6_addr ip6r0_addr[1]; /* up to 127 addresses */
-#endif
-};
+ u_int8_t ip6r0_reserved; /* reserved field */
+ u_int8_t ip6r0_slmap[3]; /* strict/loose bit map */
+ struct in6_addr ip6r0_addr[1]; /* up to 23 addresses */
+} __attribute__((__packed__));
/* Fragment header */
struct ip6_frag {
u_int8_t ip6f_reserved; /* reserved field */
u_int16_t ip6f_offlg; /* offset, reserved, and flag */
u_int32_t ip6f_ident; /* identification */
-};
+} __attribute__((__packed__));
#if BYTE_ORDER == BIG_ENDIAN
#define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */
/*
* 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 BSD_KERNEL_PRIVATE
/*
* IP6_EXTHDR_CHECK ensures that region between the IP6 header and the
* target header (including IPv6 itself, extension headers and
* 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 { \
+ } else { \
if ((m)->m_len < (off) + (hlen)) { \
ip6stat.ip6s_tooshort++; \
in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_truncated); \
m_freem(m); \
- return ret; \
+ (m) = NULL; \
+ action; \
} \
} \
} while (0)
* 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; \
- ip6stat.ip6s_exthdrget++; \
- 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; \
- ip6stat.ip6s_exthdrget0++; \
- 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 /*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_ */
projects / apple / xnu.git / blobdiff