/* * 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. * Copyright 2014 Nexenta Systems, Inc. All rights reserved. * Copyright 2019 Joyent, Inc. */ #ifndef _INET_IP6_H #define _INET_IP6_H #ifdef __cplusplus extern "C" { #endif #include #ifdef _KERNEL /* icmp6_t is used in the prototype of icmp_inbound_error_fanout_v6() */ #include #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 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 uint16_t 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 int 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 */