/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
* 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
* 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_LICENSE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* $KAME: ip6.h,v 1.18 2001/03/29 05:34:30 itojun Exp $*/
#ifndef _NETINET_IP6_H_
#define _NETINET_IP6_H_
+#ifndef DRIVERKIT
#include <sys/appleapiopts.h>
+#else
+#include <sys/_types.h>
+#include <netinet/in.h>
+#include <machine/endian.h>
+#endif /* DRIVERKIT */
/*
* Definition for internet protocol version 6.
struct ip6_hdr {
union {
struct ip6_hdrctl {
- u_int32_t ip6_un1_flow; /* 20 bits of flow-ID */
- u_int16_t ip6_un1_plen; /* payload length */
- u_int8_t ip6_un1_nxt; /* next header */
- u_int8_t ip6_un1_hlim; /* hop limit */
+ u_int32_t ip6_un1_flow; /* 20 bits of flow-ID */
+ u_int16_t ip6_un1_plen; /* payload length */
+ u_int8_t ip6_un1_nxt; /* next header */
+ u_int8_t ip6_un1_hlim; /* hop limit */
} ip6_un1;
- u_int8_t ip6_un2_vfc; /* 4 bits version, top 4 bits class */
+ u_int8_t ip6_un2_vfc; /* 4 bits version, top 4 bits class */
} ip6_ctlun;
- struct in6_addr ip6_src; /* source address */
- struct in6_addr ip6_dst; /* destination address */
+ 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
-#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen
-#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
-#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
-#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
+#define ip6_vfc ip6_ctlun.ip6_un2_vfc
+#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow
+#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen
+#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
+#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
+#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
-#define IPV6_VERSION 0x60
-#define IPV6_VERSION_MASK 0xf0
+#define IPV6_VERSION 0x60
+#define IPV6_VERSION_MASK 0xf0
#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_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_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
/* ECN bits proposed by Sally Floyd */
-#define IP6TOS_CE 0x01 /* congestion experienced */
-#define IP6TOS_ECT 0x02 /* ECN-capable transport */
+#define IP6TOS_CE 0x01 /* congestion experienced */
+#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 {
+struct ip6_ext {
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? */
struct ip6_hbh {
- u_int8_t ip6h_nxt; /* next header */
- u_int8_t ip6h_len; /* length in units of 8 octets */
+ 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? */
struct ip6_dest {
- u_int8_t ip6d_nxt; /* next header */
- u_int8_t ip6d_len; /* length in units of 8 octets */
+ 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_PADN 0x01 /* 00 0 00001 */
-#define IP6OPT_JUMBO 0xC2 /* 11 0 00010 = 194 */
-#define IP6OPT_NSAP_ADDR 0xC3 /* 11 0 00011 */
-#define IP6OPT_TUNNEL_LIMIT 0x04 /* 00 0 00100 */
-#define IP6OPT_RTALERT 0x05 /* 00 0 00101 (KAME definition) */
-
-#define IP6OPT_RTALERT_LEN 4
-#define IP6OPT_RTALERT_MLD 0 /* Datagram contains an MLD message */
-#define IP6OPT_RTALERT_RSVP 1 /* Datagram contains an RSVP 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_TYPE(o) ((o) & 0xC0)
-#define IP6OPT_TYPE_SKIP 0x00
-#define IP6OPT_TYPE_DISCARD 0x40
-#define IP6OPT_TYPE_FORCEICMP 0x80
-#define IP6OPT_TYPE_ICMP 0xC0
-
-#define IP6OPT_MUTABLE 0x20
-
-#define IP6OPT_JUMBO_LEN 6
+#define IP6OPT_PAD1 0x00 /* 00 0 00000 */
+#define IP6OPT_PADN 0x01 /* 00 0 00001 */
+#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 */
+#define IP6OPT_RTALERT_RSVP 1 /* Datagram contains an RSVP message */
+#define IP6OPT_RTALERT_ACTNET 2 /* contains an Active Networks msg */
+#define IP6OPT_MINLEN 2
+
+#define IP6OPT_EID 0x8a /* 10 0 01010 */
+
+#define IP6OPT_TYPE(o) ((o) & 0xC0)
+#define IP6OPT_TYPE_SKIP 0x00
+#define IP6OPT_TYPE_DISCARD 0x40
+#define IP6OPT_TYPE_FORCEICMP 0x80
+#define IP6OPT_TYPE_ICMP 0xC0
+
+#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 */
- u_int8_t ip6r_len; /* length in units of 8 octets */
- u_int8_t ip6r_type; /* routing type */
- u_int8_t ip6r_segleft; /* segments left */
+ u_int8_t ip6r_nxt; /* next header */
+ u_int8_t ip6r_len; /* length in units of 8 octets */
+ 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 */
+/* Type 0 Routing header, deprecated by RFC 5095. */
struct ip6_rthdr0 {
- u_int8_t ip6r0_nxt; /* next header */
- 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_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 */
+ u_int8_t ip6r0_nxt; /* next header */
+ 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 */
} __attribute__((__packed__));
/* Fragment header */
struct ip6_frag {
- u_int8_t ip6f_nxt; /* next header */
- u_int8_t ip6f_reserved; /* reserved field */
- u_int16_t ip6f_offlg; /* offset, reserved, and flag */
- u_int32_t ip6f_ident; /* identification */
+ u_int8_t ip6f_nxt; /* next header */
+ 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 */
-#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */
-#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
+#define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */
+#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */
+#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
#else /* BYTE_ORDER == LITTLE_ENDIAN */
-#define IP6F_OFF_MASK 0xf8ff /* mask out offset from _offlg */
-#define IP6F_RESERVED_MASK 0x0600 /* reserved bits in ip6f_offlg */
-#define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */
+#define IP6F_OFF_MASK 0xf8ff /* mask out offset from _offlg */
+#define IP6F_RESERVED_MASK 0x0600 /* reserved bits in ip6f_offlg */
+#define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */
#endif /* BYTE_ORDER == LITTLE_ENDIAN */
/*
* Internet implementation parameters.
*/
-#define IPV6_MAXHLIM 255 /* maximun 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_MAXHLIM 255 /* maximum hoplimit */
+#define IPV6_DEFHLIM 64 /* default hlim */
+#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_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
* supposed to never be matched but is prepared just in case.
*/
-#define IP6_EXTHDR_CHECK(m, off, hlen, ret) \
-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; \
- } else if ((m)->m_flags & M_EXT) { \
- if ((m)->m_len < (off) + (hlen)) { \
- ip6stat.ip6s_exthdrtoolong++; \
- m_freem(m); \
- return ret; \
- } \
- } else { \
- if ((m)->m_len < (off) + (hlen)) { \
- ip6stat.ip6s_exthdrtoolong++; \
- m_freem(m); \
- return ret; \
- } \
- } \
- } 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; \
- } \
- } \
+#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++; \
+ action; \
+ } else if ((m)->m_flags & M_EXT) { \
+ if ((m)->m_len < (off) + (hlen)) { \
+ ip6stat.ip6s_exthdrtoolong++; \
+ m_freem(m); \
+ (m) = NULL; \
+ action; \
+ } \
+ } else { \
+ if ((m)->m_len < (off) + (hlen)) { \
+ ip6stat.ip6s_exthdrtoolong++; \
+ m_freem(m); \
+ (m) = NULL; \
+ action; \
+ } \
+ } \
+ } else { \
+ if ((m)->m_len < (off) + (hlen)) { \
+ ip6stat.ip6s_tooshort++; \
+ in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_truncated); \
+ m_freem(m); \
+ (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; \
- 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_ */
projects / apple / xnu.git / blobdiff