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gems-kernel/source/THIRDPARTY/xnu/bsd/netinet6/ip6_var.h
Sam Sneed f5727805f2 add darwin/xnu functionality
2024-06-03 11:29:39 -05:00

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/*
* Copyright (c) 2000-2021 Apple 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. 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,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ip_var.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _NETINET6_IP6_VAR_H_
#define _NETINET6_IP6_VAR_H_
#include <sys/appleapiopts.h>
#ifdef BSD_KERNEL_PRIVATE
#include <kern/zalloc.h>
#include <net/ethernet.h>
struct ip6asfrag;
/*
* IP6 reassembly queue structure. Each fragment
* being reassembled is attached to one of these structures.
*/
struct ip6q {
struct ip6asfrag *ip6q_down;
struct ip6asfrag *ip6q_up;
u_int32_t ip6q_ident;
u_int8_t ip6q_nxt;
u_int8_t ip6q_ecn;
u_int8_t ip6q_ttl;
struct in6_addr ip6q_src, ip6q_dst;
struct ip6q *ip6q_next;
struct ip6q *ip6q_prev;
int ip6q_unfrglen; /* len of unfragmentable part */
int ip6q_nfrag; /* # of fragments */
uint32_t ip6q_csum_flags; /* checksum flags */
uint32_t ip6q_csum; /* partial checksum value */
uint32_t ip6q_flags;
uint32_t ip6q_dst_ifscope, ip6q_src_ifscope;
#define IP6QF_DIRTY 0x00000001
};
struct ip6_moptions {
decl_lck_mtx_data(, im6o_lock);
uint32_t im6o_refcnt; /* ref count */
uint32_t im6o_debug; /* see ifa_debug flags */
struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
u_short im6o_num_memberships; /* no. memberships this socket */
u_short im6o_max_memberships; /* max memberships this socket */
struct in6_multi **__counted_by(im6o_max_memberships) im6o_membership;
/* group memberships */
struct in6_mfilter *__counted_by(im6o_max_memberships) im6o_mfilters;
/* source filters */
void (*im6o_trace) /* callback fn for tracing refs */
(struct ip6_moptions *, int);
};
#define IM6O_LOCK_ASSERT_HELD(_im6o) \
LCK_MTX_ASSERT(&(_im6o)->im6o_lock, LCK_MTX_ASSERT_OWNED)
#define IM6O_LOCK_ASSERT_NOTHELD(_im6o) \
LCK_MTX_ASSERT(&(_im6o)->im6o_lock, LCK_MTX_ASSERT_NOTOWNED)
#define IM6O_LOCK(_im6o) \
lck_mtx_lock(&(_im6o)->im6o_lock)
#define IM6O_LOCK_SPIN(_im6o) \
lck_mtx_lock_spin(&(_im6o)->im6o_lock)
#define IM6O_CONVERT_LOCK(_im6o) do { \
IM6O_LOCK_ASSERT_HELD(_im6o); \
lck_mtx_convert_spin(&(_im6o)->im6o_lock); \
} while (0)
#define IM6O_UNLOCK(_im6o) \
lck_mtx_unlock(&(_im6o)->im6o_lock)
#define IM6O_ADDREF(_im6o) \
im6o_addref(_im6o, 0)
#define IM6O_ADDREF_LOCKED(_im6o) \
im6o_addref(_im6o, 1)
#define IM6O_REMREF(_im6o) \
im6o_remref(_im6o)
struct ip6_exthdrs {
struct mbuf *ip6e_ip6;
struct mbuf *ip6e_hbh;
struct mbuf *ip6e_dest1;
struct mbuf *ip6e_rthdr;
struct mbuf *ip6e_dest2;
boolean_t merged;
};
/*
* Control options for outgoing packets
*/
/* Routing header related info */
struct ip6po_rhinfo {
struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */
struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */
};
#define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr
#define ip6po_route ip6po_rhinfo.ip6po_rhi_route
/* Nexthop related info */
struct ip6po_nhinfo {
struct sockaddr *ip6po_nhi_nexthop;
struct route_in6 ip6po_nhi_route; /* Route to the nexthop */
};
#define ip6po_nexthop ip6po_nhinfo.ip6po_nhi_nexthop
#define ip6po_nextroute ip6po_nhinfo.ip6po_nhi_route
struct ip6_pktopts {
struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */
int ip6po_hlim; /* Hoplimit for outgoing packets */
/* Outgoing IF/address information */
struct in6_pktinfo *ip6po_pktinfo;
/* Next-hop address information */
struct ip6po_nhinfo ip6po_nhinfo;
struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */
/* Destination options header (before a routing header) */
struct ip6_dest *ip6po_dest1;
/* Routing header related info. */
struct ip6po_rhinfo ip6po_rhinfo;
/* Destination options header (after a routing header) */
struct ip6_dest *ip6po_dest2;
int ip6po_tclass; /* traffic class */
int ip6po_minmtu; /* fragment vs PMTU discovery policy */
#define IP6PO_MINMTU_MCASTONLY -1 /* default; send at min MTU for multicast */
#define IP6PO_MINMTU_DISABLE 0 /* always perform pmtu disc */
#define IP6PO_MINMTU_ALL 1 /* always send at min MTU */
/* whether temporary addresses are preferred as source address */
int ip6po_prefer_tempaddr;
#define IP6PO_TEMPADDR_SYSTEM -1 /* follow the system default */
#define IP6PO_TEMPADDR_NOTPREFER 0 /* not prefer temporary address */
#define IP6PO_TEMPADDR_PREFER 1 /* prefer temporary address */
int ip6po_flags;
#if 0 /* parameters in this block is obsolete. do not reuse the values. */
#define IP6PO_REACHCONF 0x01 /* upper-layer reachability confirmation. */
#define IP6PO_MINMTU 0x02 /* use minimum MTU (IPV6_USE_MIN_MTU) */
#endif
#define IP6PO_DONTFRAG 0x04 /* no fragmentation (IPV6_DONTFRAG) */
#define IP6PO_USECOA 0x08 /* use care of address */
};
/*
* Control options for incoming packets
*/
#endif /* BSD_KERNEL_PRIVATE */
#define IP6S_SRCRULE_COUNT 16
#include <netinet6/scope6_var.h>
struct ip6stat {
u_quad_t ip6s_total; /* total packets received */
u_quad_t ip6s_tooshort; /* packet too short */
u_quad_t ip6s_toosmall; /* not enough data */
u_quad_t ip6s_fragments; /* fragments received */
u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */
u_quad_t ip6s_fragtimeout; /* fragments timed out */
u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */
u_quad_t ip6s_forward; /* packets forwarded */
u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */
u_quad_t ip6s_redirectsent; /* packets forwarded on same net */
u_quad_t ip6s_delivered; /* datagrams delivered to upper level */
u_quad_t ip6s_localout; /* total ip packets generated here */
u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */
u_quad_t ip6s_reassembled; /* total packets reassembled ok */
u_quad_t ip6s_atmfrag_rcvd; /* atomic fragments received */
u_quad_t ip6s_fragmented; /* datagrams successfully fragmented */
u_quad_t ip6s_ofragments; /* output fragments created */
u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */
u_quad_t ip6s_badoptions; /* error in option processing */
u_quad_t ip6s_noroute; /* packets discarded due to no route */
u_quad_t ip6s_badvers; /* ip6 version != 6 */
u_quad_t ip6s_rawout; /* total raw ip packets generated */
u_quad_t ip6s_badscope; /* scope error */
u_quad_t ip6s_notmember; /* don't join this multicast group */
u_quad_t ip6s_nxthist[256]; /* next header history */
u_quad_t ip6s_m1; /* one mbuf */
u_quad_t ip6s_m2m[32]; /* two or more mbuf */
u_quad_t ip6s_mext1; /* one ext mbuf */
u_quad_t ip6s_mext2m; /* two or more ext mbuf */
u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */
u_quad_t ip6s_nogif; /* no match gif found */
u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */
/*
* statistics for improvement of the source address selection
* algorithm:
*/
/* number of times that address selection fails */
u_quad_t ip6s_sources_none;
/* number of times that an address on the outgoing I/F is chosen */
u_quad_t ip6s_sources_sameif[SCOPE6_ID_MAX];
/* number of times that an address on a non-outgoing I/F is chosen */
u_quad_t ip6s_sources_otherif[SCOPE6_ID_MAX];
/*
* number of times that an address that has the same scope
* from the destination is chosen.
*/
u_quad_t ip6s_sources_samescope[SCOPE6_ID_MAX];
/*
* number of times that an address that has a different scope
* from the destination is chosen.
*/
u_quad_t ip6s_sources_otherscope[SCOPE6_ID_MAX];
/* number of times that a deprecated address is chosen */
u_quad_t ip6s_sources_deprecated[SCOPE6_ID_MAX];
u_quad_t ip6s_forward_cachehit;
u_quad_t ip6s_forward_cachemiss;
/* number of times that each rule of source selection is applied. */
u_quad_t ip6s_sources_rule[IP6S_SRCRULE_COUNT];
/* number of times we ignored address on expensive secondary interfaces */
u_quad_t ip6s_sources_skip_expensive_secondary_if;
/* pkt dropped, no mbufs for control data */
u_quad_t ip6s_pktdropcntrl;
/* total packets trimmed/adjusted */
u_quad_t ip6s_adj;
/* hwcksum info discarded during adjustment */
u_quad_t ip6s_adj_hwcsum_clr;
/* duplicate address detection collisions */
u_quad_t ip6s_dad_collide;
/* DAD NS looped back */
u_quad_t ip6s_dad_loopcount;
/* NECP policy related drop */
u_quad_t ip6s_necp_policy_drop;
/* CLAT46 stats */
u_quad_t ip6s_clat464_in_tooshort_drop;
u_quad_t ip6s_clat464_in_nov6addr_drop;
u_quad_t ip6s_clat464_in_nov4addr_drop;
u_quad_t ip6s_clat464_in_v4synthfail_drop;
u_quad_t ip6s_clat464_in_64transfail_drop;
u_quad_t ip6s_clat464_in_64proto_transfail_drop;
u_quad_t ip6s_clat464_in_64frag_transfail_drop;
u_quad_t ip6s_clat464_in_invalpbuf_drop;
u_quad_t ip6s_clat464_in_success;
u_quad_t ip6s_clat464_in_drop;
u_quad_t ip6s_clat464_in_v4_drop;
u_quad_t ip6s_clat464_out_nov6addr_drop;
u_quad_t ip6s_clat464_out_v6synthfail_drop;
u_quad_t ip6s_clat464_out_46transfail_drop;
u_quad_t ip6s_clat464_out_46proto_transfail_drop;
u_quad_t ip6s_clat464_out_46frag_transfail_drop;
u_quad_t ip6s_clat464_out_invalpbuf_drop;
u_quad_t ip6s_clat464_out_success;
u_quad_t ip6s_clat464_out_drop;
u_quad_t ip6s_clat464_v6addr_conffail;
u_quad_t ip6s_clat464_plat64_pfx_setfail;
u_quad_t ip6s_clat464_plat64_pfx_getfail;
u_quad_t ip6s_overlap_frag_drop;
u_quad_t ip6s_rcv_if_weak_match;
u_quad_t ip6s_rcv_if_no_match;
};
enum ip6s_sources_rule_index {
IP6S_SRCRULE_0, IP6S_SRCRULE_1, IP6S_SRCRULE_2, IP6S_SRCRULE_3, IP6S_SRCRULE_4,
IP6S_SRCRULE_5, IP6S_SRCRULE_5_5, IP6S_SRCRULE_6, IP6S_SRCRULE_7,
IP6S_SRCRULE_7x, IP6S_SRCRULE_8
};
#ifdef BSD_KERNEL_PRIVATE
/*
* IPv6 onion peeling state.
*
* This is currently allocated for packets destined to the all-nodes
* multicast address over Ethernet. IPv6 destination address information
* is now stored in the mbuf itself.
*/
struct ip6aux {
u_int32_t ip6a_flags;
#define IP6A_HASEEN 0x01 /* HA was present */
#ifdef notyet
#define IP6A_SWAP 0x02 /* swapped home/care-of on packet */
#define IP6A_BRUID 0x04 /* BR Unique Identifier was present */
#define IP6A_RTALERTSEEN 0x08 /* rtalert present */
/* ip6.ip6_src */
struct in6_addr ip6a_careof; /* care-of address of the peer */
struct in6_addr ip6a_home; /* home address of the peer */
u_int16_t ip6a_bruid; /* BR unique identifier */
/* rtalert */
u_int16_t ip6a_rtalert; /* rtalert option value */
#endif /* notyet */
/* ether source address if all-nodes multicast destination */
u_char ip6a_ehsrc[ETHER_ADDR_LEN];
};
/* flags passed to ip6_output as last parameter */
#define IPV6_UNSPECSRC 0x01 /* allow :: as the source address */
#define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */
#define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */
#define IPV6_FLAG_NOSRCIFSEL 0x80 /* bypas source address selection */
#define IPV6_OUTARGS 0x100 /* has ancillary output info */
#ifdef BSD_KERNEL_PRIVATE
#define IP6_HDR_ALIGNED_P(_ip6) ((((uintptr_t)(_ip6)) & ((uintptr_t)3)) == 0)
/*
* On platforms which require strict alignment (currently for anything but
* i386 or x86_64 or arm64), this macro checks whether the pointer to the IP header
* is 32-bit aligned, and assert otherwise.
*/
#if defined(__i386__) || defined(__x86_64__) || defined(__arm64__)
#define IP6_HDR_STRICT_ALIGNMENT_CHECK(_ip6) do { } while (0)
#else /* !__i386__ && !__x86_64__ && !__arm64__ */
#define IP6_HDR_STRICT_ALIGNMENT_CHECK(_ip6) do { \
if (!IP_HDR_ALIGNED_P(_ip6)) { \
panic_plain("\n%s: Unaligned IPv6 header %p\n", \
__func__, _ip6); \
} \
} while (0)
#endif /* !__i386__ && !__x86_64__ && !__arm64__ */
#endif /* BSD_KERNEL_PRIVATE */
#include <net/flowadv.h>
/*
* Extra information passed to ip6_output when IPV6_OUTARGS is set.
*/
struct ip6_out_args {
unsigned int ip6oa_boundif; /* bound outgoing interface */
struct flowadv ip6oa_flowadv; /* flow advisory code */
u_int32_t ip6oa_flags; /* IP6OAF flags (see below) */
#define IP6OAF_SELECT_SRCIF 0x00000001 /* src interface selection */
#define IP6OAF_BOUND_IF 0x00000002 /* boundif value is valid */
#define IP6OAF_BOUND_SRCADDR 0x00000004 /* bound to src address */
#define IP6OAF_NO_CELLULAR 0x00000010 /* skip IFT_CELLULAR */
#define IP6OAF_NO_EXPENSIVE 0x00000020 /* skip IFEF_EXPENSIVE */
#define IP6OAF_AWDL_UNRESTRICTED 0x00000040 /* privileged AWDL */
#define IP6OAF_QOSMARKING_ALLOWED 0x00000080 /* policy allows Fastlane DSCP marking */
#define IP6OAF_INTCOPROC_ALLOWED 0x00000100 /* access to internal coproc interfaces */
#define IP6OAF_NO_LOW_POWER 0x00000200 /* skip low power */
#define IP6OAF_NO_CONSTRAINED 0x00000400 /* skip IFXF_CONSTRAINED */
#define IP6OAF_SKIP_PF 0x00000800 /* skip PF */
#define IP6OAF_DONT_FRAG 0x00001000 /* Don't fragment */
#define IP6OAF_REDO_QOSMARKING_POLICY 0x00002000 /* Re-evaluate QOS marking policy */
#define IP6OAF_R_IFDENIED 0x00004000 /* return flag: denied access to interface */
#define IP6OAF_MANAGEMENT_ALLOWED 0x00004000 /* access to management to interface */
int ip6oa_sotc; /* traffic class for Fastlane DSCP mapping */
int ip6oa_netsvctype;
int32_t qos_marking_gencount;
};
#define IP6OAF_RET_MASK (IP6OAF_R_IFDENIED)
extern struct ip6stat ip6stat; /* statistics */
extern int ip6_defhlim; /* default hop limit */
extern int ip6_defmcasthlim; /* default multicast hop limit */
extern int ip6_forwarding; /* act as router? */
extern int ip6_gif_hlim; /* Hop limit for gif encap packet */
extern int ip6_use_deprecated; /* allow deprecated addr as source */
extern int ip6_rr_prune; /* router renumbering prefix */
/* walk list every 5 sec. */
extern int ip6_mcast_pmtu; /* enable pMTU discovery for multicast? */
#define ip6_mapped_addr_on (!ip6_v6only)
extern int ip6_v6only;
extern int ip6_neighborgcthresh; /* Threshold # of NDP entries for GC */
extern int ip6_maxifprefixes; /* Max acceptable prefixes via RA per IF */
extern int ip6_maxifdefrouters; /* Max acceptable def routers via RA */
extern int ip6_maxdynroutes; /* Max # of routes created via redirect */
extern int ip6_sendredirects; /* send IP redirects when forwarding? */
extern int ip6_accept_rtadv; /* deprecated */
extern int ip6_log_interval;
extern uint64_t ip6_log_time;
extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */
extern int ip6_dad_count; /* DupAddrDetectionTransmits */
/* RFC4193 Unique Local Unicast Prefixes only */
extern int ip6_only_allow_rfc4193_prefix;
extern int ip6_auto_flowlabel;
extern int ip6_auto_linklocal;
extern int ip6_anonportmin; /* minimum ephemeral port */
extern int ip6_anonportmax; /* maximum ephemeral port */
extern int ip6_lowportmin; /* minimum reserved port */
extern int ip6_lowportmax; /* maximum reserved port */
extern int ip6_use_tempaddr; /* whether to use temporary addresses. */
extern int ip6_ula_use_tempaddr; /* whether to use temporary ULA addresses */
/* whether to prefer temporary addresses in the source address selection */
extern int ip6_prefer_tempaddr;
/* whether to use the default scope zone when unspecified */
extern int ip6_use_defzone;
/* how many times to try allocating cga address after conflict */
extern int ip6_cga_conflict_retries;
#define IPV6_CGA_CONFLICT_RETRIES_DEFAULT 3
#define IPV6_CGA_CONFLICT_RETRIES_MAX 10
extern struct pr_usrreqs rip6_usrreqs;
extern struct pr_usrreqs icmp6_dgram_usrreqs;
struct sockopt;
struct inpcb;
struct ip6_hdr;
struct in6_ifaddr;
struct ip6protosw;
struct domain;
extern int icmp6_ctloutput(struct socket *, struct sockopt *);
extern int icmp6_dgram_ctloutput(struct socket *, struct sockopt *);
extern int icmp6_dgram_send(struct socket *, int, struct mbuf *,
struct sockaddr *, struct mbuf *, struct proc *);
extern int icmp6_dgram_attach(struct socket *, int, struct proc *);
extern void ip6_register_m_tag(void);
extern void ip6_init(struct ip6protosw *, struct domain *);
extern void ip6_input(struct mbuf *);
extern void ip6_setsrcifaddr_info(struct mbuf *, uint32_t, struct in6_ifaddr *);
extern void ip6_setdstifaddr_info(struct mbuf *, uint32_t, struct in6_ifaddr *);
extern int ip6_getsrcifaddr_info(struct mbuf *, uint32_t *, uint32_t *);
extern int ip6_getdstifaddr_info(struct mbuf *, uint32_t *, uint32_t *);
extern uint32_t ip6_input_getsrcifscope(struct mbuf *);
extern uint32_t ip6_input_getdstifscope(struct mbuf *);
extern void ip6_output_setsrcifscope(struct mbuf *, uint32_t, struct in6_ifaddr *);
extern void ip6_output_setdstifscope(struct mbuf *, uint32_t, struct in6_ifaddr *);
extern uint32_t ip6_output_getsrcifscope(struct mbuf *);
extern uint32_t ip6_output_getdstifscope(struct mbuf *);
extern void ip6_freepcbopts(struct ip6_pktopts *);
extern int ip6_unknown_opt(u_int8_t *, struct mbuf *, size_t);
extern char *ip6_get_prevhdr(struct mbuf *, int);
extern int ip6_nexthdr(struct mbuf *, int, int, int *);
extern int ip6_lasthdr(struct mbuf *, int, int, int *);
extern boolean_t ip6_pkt_has_ulp(struct mbuf *m);
extern void ip6_moptions_init(void);
extern struct ip6_moptions *ip6_allocmoptions(zalloc_flags_t);
extern void im6o_addref(struct ip6_moptions *, int);
extern void im6o_remref(struct ip6_moptions *);
extern struct ip6aux *ip6_addaux(struct mbuf *);
extern struct ip6aux *ip6_findaux(struct mbuf *);
extern void ip6_delaux(struct mbuf *);
extern int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *,
u_int32_t *);
extern struct mbuf **ip6_savecontrol_v4(struct inpcb *, struct mbuf *,
struct mbuf **, int *);
extern int ip6_savecontrol(struct inpcb *, struct mbuf *, struct mbuf **);
extern struct mbuf *ip6_forward(struct mbuf *, struct route_in6 *, int);
extern void ip6_notify_pmtu(struct inpcb *, struct sockaddr_in6 *, u_int32_t *);
extern void ip6_mloopback(struct ifnet *, struct ifnet *, struct mbuf *,
struct sockaddr_in6 *, uint32_t, int32_t);
extern int ip6_output(struct mbuf *, struct ip6_pktopts *, struct route_in6 *,
int, struct ip6_moptions *, struct ifnet **, struct ip6_out_args *);
extern int ip6_output_list(struct mbuf *, int, struct ip6_pktopts *,
struct route_in6 *, int, struct ip6_moptions *, struct ifnet **,
struct ip6_out_args *);
extern int ip6_ctloutput(struct socket *, struct sockopt *);
extern int ip6_raw_ctloutput(struct socket *, struct sockopt *);
extern void ip6_initpktopts(struct ip6_pktopts *);
extern int ip6_setpktoptions(struct mbuf *, struct ip6_pktopts *, int, int);
extern void ip6_clearpktopts(struct ip6_pktopts *, int);
extern struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, zalloc_flags_t);
extern int ip6_optlen(struct inpcb *);
extern void ip6_drain(void);
extern int ip6_do_fragmentation(struct mbuf **, uint32_t, struct ifnet *, uint32_t,
struct ip6_hdr *, uint8_t *, uint32_t, int, uint32_t);
extern int route6_input(struct mbuf **, int *, int);
extern void frag6_init(void);
extern int frag6_input(struct mbuf **, int *, int);
extern void frag6_drain(void);
extern int rip6_input(struct mbuf **, int *, int);
extern void rip6_ctlinput(int, struct sockaddr *, void *, struct ifnet *);
extern int rip6_ctloutput(struct socket *so, struct sockopt *sopt);
extern int rip6_output(struct mbuf *, struct socket *, struct sockaddr_in6 *,
struct mbuf *, int);
extern int dest6_input(struct mbuf **, int *, int);
/*
* IPv6 source address selection hints
*/
#define IPV6_SRCSEL_HINT_PREFER_TMPADDR 0x00000001
extern struct ifaddr * in6_selectsrc_core_ifa(struct sockaddr_in6 *, struct ifnet *, int);
extern struct in6_addr * in6_selectsrc_core(struct sockaddr_in6 *,
uint32_t, struct ifnet *, int,
struct in6_addr *, struct ifnet **, int *, struct ifaddr **, struct route_in6 *);
extern struct in6_addr *in6_selectsrc(struct sockaddr_in6 *,
struct ip6_pktopts *, struct inpcb *, struct route_in6 *,
struct ifnet **, struct in6_addr *, unsigned int, int *);
extern struct in6_addrpolicy *in6_addrsel_lookup_policy(struct sockaddr_in6 *);
extern int in6_selectroute(struct sockaddr_in6 *, struct sockaddr_in6 *,
struct ip6_pktopts *, struct ip6_moptions *, struct in6_ifaddr **,
struct route_in6 *, struct ifnet **, struct rtentry **, int,
struct ip6_out_args *);
extern int ip6_setpktopts(struct mbuf *control, struct ip6_pktopts *opt,
struct ip6_pktopts *stickyopt, int uproto);
extern u_int32_t ip6_randomid(void);
extern u_int32_t ip6_randomflowlabel(void);
#endif /* BSD_KERNEL_PRIVATE */
#endif /* !_NETINET6_IP6_VAR_H_ */
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