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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _INET_IP6_H
#define _INET_IP6_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/isa_defs.h>
#ifdef _KERNEL
/* icmp6_t is used in the prototype of icmp_inbound_error_fanout_v6() */
#include <netinet/icmp6.h>
#endif /* _KERNEL */
/* version number for IPv6 - hard to get this one wrong! */
#define IPV6_VERSION 6
#define IPV6_HDR_LEN 40
#define IPV6_ADDR_LEN 16
/*
* IPv6 address scopes. The values of these enums also match the scope
* field of multicast addresses.
*/
typedef enum {
IP6_SCOPE_INTFLOCAL = 1, /* Multicast addresses only */
IP6_SCOPE_LINKLOCAL,
IP6_SCOPE_SUBNETLOCAL, /* Multicast addresses only */
IP6_SCOPE_ADMINLOCAL, /* Multicast addresses only */
IP6_SCOPE_SITELOCAL,
IP6_SCOPE_GLOBAL
} in6addr_scope_t;
/* From RFC 3542 - setting for IPV6_USE_MIN_MTU socket option */
#define IPV6_USE_MIN_MTU_MULTICAST -1 /* Default */
#define IPV6_USE_MIN_MTU_NEVER 0
#define IPV6_USE_MIN_MTU_ALWAYS 1
#ifdef _KERNEL
/* Extract the scope from a multicast address */
#ifdef _BIG_ENDIAN
#define IN6_ADDR_MC_SCOPE(addr) \
(((addr)->s6_addr32[0] & 0x000f0000) >> 16)
#else
#define IN6_ADDR_MC_SCOPE(addr) \
(((addr)->s6_addr32[0] & 0x00000f00) >> 8)
#endif
/* Default IPv4 TTL for IPv6-in-IPv4 encapsulated packets */
#define IPV6_DEFAULT_HOPS 60 /* XXX What should it be? */
/* Max IPv6 TTL */
#define IPV6_MAX_HOPS 255
/* Minimum IPv6 MTU from rfc2460 */
#define IPV6_MIN_MTU 1280
/* EUI-64 based token length */
#define IPV6_TOKEN_LEN 64
/* Length of an advertised IPv6 prefix */
#define IPV6_PREFIX_LEN 64
/* Default and maximum tunnel encapsulation limits. See RFC 2473. */
#define IPV6_DEFAULT_ENCAPLIMIT 4
#define IPV6_MAX_ENCAPLIMIT 255
/*
* Minimum and maximum extension header lengths for IPv6. The 8-bit
* length field of each extension header (see rfc2460) specifies the
* number of 8 octet units of data in the header not including the
* first 8 octets. A value of 0 would indicate 8 bytes (0 * 8 + 8),
* and 255 would indicate 2048 bytes (255 * 8 + 8).
*/
#define MIN_EHDR_LEN 8
#define MAX_EHDR_LEN 2048
#ifdef _BIG_ENDIAN
#define IPV6_DEFAULT_VERS_AND_FLOW 0x60000000
#define IPV6_VERS_AND_FLOW_MASK 0xF0000000
#define V6_MCAST 0xFF000000
#define V6_LINKLOCAL 0xFE800000
#define IPV6_FLOW_TCLASS(x) (((x) & IPV6_FLOWINFO_TCLASS) >> 20)
#define IPV6_TCLASS_FLOW(f, c) (((f) & ~IPV6_FLOWINFO_TCLASS) |\
((c) << 20))
#else
#define IPV6_DEFAULT_VERS_AND_FLOW 0x00000060
#define IPV6_VERS_AND_FLOW_MASK 0x000000F0
#define V6_MCAST 0x000000FF
#define V6_LINKLOCAL 0x000080FE
#define IPV6_FLOW_TCLASS(x) ((((x) & 0xf000U) >> 12) |\
(((x) & 0xf) << 4))
#define IPV6_TCLASS_FLOW(f, c) (((f) & ~IPV6_FLOWINFO_TCLASS) |\
((((c) & 0xf) << 12) |\
(((c) & 0xf0) >> 4)))
#endif
/*
* UTILITY MACROS FOR ADDRESSES.
*/
/*
* Convert an IPv4 address mask to an IPv6 mask. Pad with 1-bits.
*/
#define V4MASK_TO_V6(v4, v6) ((v6).s6_addr32[0] = 0xffffffffUL, \
(v6).s6_addr32[1] = 0xffffffffUL, \
(v6).s6_addr32[2] = 0xffffffffUL, \
(v6).s6_addr32[3] = (v4))
/*
* Convert aligned IPv4-mapped IPv6 address into an IPv4 address.
* Note: We use "v6" here in definition of macro instead of "(v6)"
* Not possible to use "(v6)" here since macro is used with struct
* field names as arguments.
*/
#define V4_PART_OF_V6(v6) v6.s6_addr32[3]
#ifdef _BIG_ENDIAN
#define V6_OR_V4_INADDR_ANY(a) ((a).s6_addr32[3] == 0 && \
((a).s6_addr32[2] == 0xffffU || \
(a).s6_addr32[2] == 0) && \
(a).s6_addr32[1] == 0 && \
(a).s6_addr32[0] == 0)
#else
#define V6_OR_V4_INADDR_ANY(a) ((a).s6_addr32[3] == 0 && \
((a).s6_addr32[2] == 0xffff0000U || \
(a).s6_addr32[2] == 0) && \
(a).s6_addr32[1] == 0 && \
(a).s6_addr32[0] == 0)
#endif /* _BIG_ENDIAN */
/* IPv4-mapped CLASSD addresses */
#ifdef _BIG_ENDIAN
#define IN6_IS_ADDR_V4MAPPED_CLASSD(addr) \
(((addr)->_S6_un._S6_u32[2] == 0x0000ffff) && \
(CLASSD((addr)->_S6_un._S6_u32[3])) && \
((addr)->_S6_un._S6_u32[1] == 0) && \
((addr)->_S6_un._S6_u32[0] == 0))
#else /* _BIG_ENDIAN */
#define IN6_IS_ADDR_V4MAPPED_CLASSD(addr) \
(((addr)->_S6_un._S6_u32[2] == 0xffff0000U) && \
(CLASSD((addr)->_S6_un._S6_u32[3])) && \
((addr)->_S6_un._S6_u32[1] == 0) && \
((addr)->_S6_un._S6_u32[0] == 0))
#endif /* _BIG_ENDIAN */
/* Clear an IPv6 addr */
#define V6_SET_ZERO(a) ((a).s6_addr32[0] = 0, \
(a).s6_addr32[1] = 0, \
(a).s6_addr32[2] = 0, \
(a).s6_addr32[3] = 0)
/* Mask comparison: is IPv6 addr a, and'ed with mask m, equal to addr b? */
#define V6_MASK_EQ(a, m, b) \
((((a).s6_addr32[0] & (m).s6_addr32[0]) == (b).s6_addr32[0]) && \
(((a).s6_addr32[1] & (m).s6_addr32[1]) == (b).s6_addr32[1]) && \
(((a).s6_addr32[2] & (m).s6_addr32[2]) == (b).s6_addr32[2]) && \
(((a).s6_addr32[3] & (m).s6_addr32[3]) == (b).s6_addr32[3]))
#define V6_MASK_EQ_2(a, m, b) \
((((a).s6_addr32[0] & (m).s6_addr32[0]) == \
((b).s6_addr32[0] & (m).s6_addr32[0])) && \
(((a).s6_addr32[1] & (m).s6_addr32[1]) == \
((b).s6_addr32[1] & (m).s6_addr32[1])) && \
(((a).s6_addr32[2] & (m).s6_addr32[2]) == \
((b).s6_addr32[2] & (m).s6_addr32[2])) && \
(((a).s6_addr32[3] & (m).s6_addr32[3]) == \
((b).s6_addr32[3] & (m).s6_addr32[3])))
/* Copy IPv6 address (s), logically and'ed with mask (m), into (d) */
#define V6_MASK_COPY(s, m, d) \
((d).s6_addr32[0] = (s).s6_addr32[0] & (m).s6_addr32[0], \
(d).s6_addr32[1] = (s).s6_addr32[1] & (m).s6_addr32[1], \
(d).s6_addr32[2] = (s).s6_addr32[2] & (m).s6_addr32[2], \
(d).s6_addr32[3] = (s).s6_addr32[3] & (m).s6_addr32[3])
#define ILL_FRAG_HASH_V6(v6addr, i) \
((ntohl((v6addr).s6_addr32[3]) ^ (i ^ (i >> 8))) % \
ILL_FRAG_HASH_TBL_COUNT)
/*
* GLOBAL EXTERNALS
*/
extern const in6_addr_t ipv6_all_ones;
extern const in6_addr_t ipv6_all_zeros;
extern const in6_addr_t ipv6_loopback;
extern const in6_addr_t ipv6_all_hosts_mcast;
extern const in6_addr_t ipv6_all_rtrs_mcast;
extern const in6_addr_t ipv6_all_v2rtrs_mcast;
extern const in6_addr_t ipv6_solicited_node_mcast;
extern const in6_addr_t ipv6_unspecified_group;
/*
* FUNCTION PROTOTYPES
*/
extern void convert2ascii(char *buf, const in6_addr_t *addr);
extern char *inet_ntop(int, const void *, char *, int);
extern int inet_pton(int, char *, void *);
extern void icmp_param_problem_nexthdr_v6(mblk_t *, boolean_t,
ip_recv_attr_t *);
extern void icmp_pkt2big_v6(mblk_t *, uint32_t, boolean_t,
ip_recv_attr_t *);
extern void icmp_time_exceeded_v6(mblk_t *, uint8_t, boolean_t,
ip_recv_attr_t *);
extern void icmp_unreachable_v6(mblk_t *, uint8_t, boolean_t,
ip_recv_attr_t *);
extern mblk_t *icmp_inbound_v6(mblk_t *, ip_recv_attr_t *);
extern void icmp_inbound_error_fanout_v6(mblk_t *, icmp6_t *,
ip_recv_attr_t *);
extern void icmp_update_out_mib_v6(ill_t *, icmp6_t *);
extern boolean_t conn_wantpacket_v6(conn_t *, ip_recv_attr_t *, ip6_t *);
extern in6addr_scope_t ip_addr_scope_v6(const in6_addr_t *);
extern void ip_build_hdrs_v6(uchar_t *, uint_t, const ip_pkt_t *, uint8_t,
uint32_t);
extern void ip_fanout_udp_multi_v6(mblk_t *, ip6_t *, uint16_t, uint16_t,
ip_recv_attr_t *);
extern void ip_fanout_send_icmp_v6(mblk_t *, uint_t, uint8_t,
ip_recv_attr_t *);
extern void ip_fanout_proto_v6(mblk_t *, ip6_t *, ip_recv_attr_t *);
extern int ip_find_hdr_v6(mblk_t *, ip6_t *, boolean_t, ip_pkt_t *,
uint8_t *);
extern in6_addr_t ip_get_dst_v6(ip6_t *, const mblk_t *, boolean_t *);
extern ip6_rthdr_t *ip_find_rthdr_v6(ip6_t *, uint8_t *);
extern boolean_t ip_hdr_length_nexthdr_v6(mblk_t *, ip6_t *,
uint16_t *, uint8_t **);
extern int ip_hdr_length_v6(mblk_t *, ip6_t *);
extern uint32_t ip_massage_options_v6(ip6_t *, ip6_rthdr_t *, netstack_t *);
extern void ip_forward_xmit_v6(nce_t *, mblk_t *, ip6_t *, ip_recv_attr_t *,
uint32_t, uint32_t);
extern mblk_t *ip_fraghdr_add_v6(mblk_t *, uint32_t, ip_xmit_attr_t *);
extern int ip_fragment_v6(mblk_t *, nce_t *, iaflags_t, uint_t, uint32_t,
uint32_t, zoneid_t, zoneid_t, pfirepostfrag_t postfragfn,
uintptr_t *ixa_cookie);
extern int ip_process_options_v6(mblk_t *, ip6_t *,
uint8_t *, uint_t, uint8_t, ip_recv_attr_t *);
extern void ip_process_rthdr(mblk_t *, ip6_t *, ip6_rthdr_t *,
ip_recv_attr_t *);
extern int ip_total_hdrs_len_v6(const ip_pkt_t *);
extern mblk_t *ipsec_early_ah_v6(mblk_t *, ip_recv_attr_t *);
extern int ipsec_ah_get_hdr_size_v6(mblk_t *, boolean_t);
extern void ip_send_potential_redirect_v6(mblk_t *, ip6_t *, ire_t *,
ip_recv_attr_t *);
extern void ip_rput_v6(queue_t *, mblk_t *);
extern mblk_t *mld_input(mblk_t *, ip_recv_attr_t *);
extern void mld_joingroup(ilm_t *);
extern void mld_leavegroup(ilm_t *);
extern void mld_timeout_handler(void *);
extern void pr_addr_dbg(char *, int, const void *);
extern void *ip6_kstat_init(netstackid_t, ip6_stat_t *);
extern void ip6_kstat_fini(netstackid_t, kstat_t *);
extern size_t ip6_get_src_preferences(ip_xmit_attr_t *, uint32_t *);
extern int ip6_set_src_preferences(ip_xmit_attr_t *, uint32_t);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _INET_IP6_H */
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