X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/0b4c1975fb5e4eccf1012a35081f7e7799b81046..bd504ef0e0b883cdd7917b73b3574eb9ce669905:/bsd/netinet6/ip6_var.h diff --git a/bsd/netinet6/ip6_var.h b/bsd/netinet6/ip6_var.h index 9aa8e0e3f..9507c904b 100644 --- a/bsd/netinet6/ip6_var.h +++ b/bsd/netinet6/ip6_var.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2008 Apple Inc. All rights reserved. + * Copyright (c) 2000-2012 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * @@ -97,37 +97,29 @@ #define _NETINET6_IP6_VAR_H_ #include -#ifdef KERNEL_PRIVATE +#ifdef XNU_KERNEL_PRIVATE /* * IP6 reassembly queue structure. Each fragment * being reassembled is attached to one of these structures. */ struct ip6q { - u_int32_t ip6q_head; - u_int16_t ip6q_len; - u_int8_t ip6q_nxt; /* ip6f_nxt in first fragment */ - u_int8_t ip6q_hlim; struct ip6asfrag *ip6q_down; struct ip6asfrag *ip6q_up; u_int32_t ip6q_ident; - u_int8_t ip6q_arrive; + u_int8_t ip6q_nxt; + u_int8_t ip6q_ecn; u_int8_t ip6q_ttl; - struct in6_addr ip6q_src, ip6q_dst; + struct in6_addr ip6q_src, ip6q_dst; struct ip6q *ip6q_next; struct ip6q *ip6q_prev; int ip6q_unfrglen; /* len of unfragmentable part */ #if notyet u_char *ip6q_nxtp; #endif - int ip6q_nfrag; /* number of fragments */ + int ip6q_nfrag; /* # of fragments */ }; struct ip6asfrag { - u_int32_t ip6af_head; - u_int16_t ip6af_len; - u_int8_t ip6af_nxt; - u_int8_t ip6af_hlim; - /* must not override the above members during reassembling */ struct ip6asfrag *ip6af_down; struct ip6asfrag *ip6af_up; struct mbuf *ip6af_m; @@ -140,10 +132,55 @@ struct ip6asfrag { #define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m)) 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 */ - LIST_HEAD(, in6_multi_mship) im6o_memberships; + u_short im6o_num_memberships; /* no. memberships this socket */ + u_short im6o_max_memberships; /* max memberships this socket */ + struct in6_multi **im6o_membership; /* group memberships */ + struct in6_mfilter *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; }; /* @@ -158,6 +195,14 @@ struct ip6po_rhinfo { #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 */ @@ -165,8 +210,9 @@ struct ip6_pktopts { /* Outgoing IF/address information */ struct in6_pktinfo *ip6po_pktinfo; - struct sockaddr *ip6po_nexthop; /* Next-hop address */ - + /* 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) */ @@ -178,13 +224,32 @@ struct ip6_pktopts { /* Destination options header (after a routing header) */ struct ip6_dest *ip6po_dest2; - int ip6po_tclass; /* traffic class */ + 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 */ + + int ip6po_prefer_tempaddr; /* whether temporary addresses are + preferred as source address */ +#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 /* disable fragmentation (IPV6_DONTFRAG) */ +#define IP6PO_USECOA 0x08 /* use care of address */ }; /* * Control options for incoming packets */ -#endif /* KERNEL_PRIVATE */ +#endif /* XNU_KERNEL_PRIVATE */ struct ip6stat { u_quad_t ip6s_total; /* total packets received */ @@ -201,7 +266,7 @@ struct ip6stat { 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_fragmented; /* datagrams sucessfully fragmented */ + 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 */ @@ -240,11 +305,17 @@ struct ip6stat { * from the destination is chosen. */ u_quad_t ip6s_sources_otherscope[16]; - /* number of times that an deprecated address is chosen */ + /* number of times that a deprecated address is chosen */ u_quad_t ip6s_sources_deprecated[16]; 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[16]; +#ifdef PRIVATE + u_quad_t ip6s_pktdropcntrl; /* pkt dropped, no mbufs for control data */ +#endif /* PRIVATE */ }; #ifdef KERNEL_PRIVATE @@ -279,12 +350,49 @@ struct ip6aux { }; /* flags passed to ip6_output as last parameter */ -#define IPV6_DADOUTPUT 0x01 /* DAD */ +#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 XNU_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), this macro checks whether the pointer to the IP header + * is 32-bit aligned, and assert otherwise. + */ +#if defined(__i386__) || defined(__x86_64__) +#define IP6_HDR_STRICT_ALIGNMENT_CHECK(_ip6) do { } while (0) +#else /* !__i386__ && !__x86_64__ */ +#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__ */ +#endif /* XNU_KERNEL_PRIVATE */ + +#include + +/* + * 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 */ +}; extern struct ip6stat ip6stat; /* statistics */ -extern u_int32_t ip6_id; /* fragment identifier */ +extern u_int32_t ip6_id; /* fragment identifier */ extern int ip6_defhlim; /* default hop limit */ extern int ip6_defmcasthlim; /* default multicast hop limit */ extern int ip6_forwarding; /* act as router? */ @@ -293,7 +401,8 @@ 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. */ -#define ip6_mapped_addr_on (!ip6_v6only) +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 */ @@ -304,16 +413,16 @@ extern int ip6_maxdynroutes; /* Max # of routes created via redirect */ extern struct socket *ip6_mrouter; /* multicast routing daemon */ #endif extern int ip6_sendredirects; /* send IP redirects when forwarding? */ -extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */ -extern int ip6_maxfrags; /* Maximum fragments in reassembly queue */ +extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */ +extern int ip6_maxfrags; /* Maximum fragments in reassembly queue */ extern int ip6_sourcecheck; /* Verify source interface */ extern int ip6_sourcecheck_interval; /* Interval between log messages */ -extern int ip6_accept_rtadv; /* Acts as a host not a router */ -extern int ip6_keepfaith; /* Firewall Aided Internet Translator */ +extern int ip6_accept_rtadv; /* deprecated */ extern int ip6_log_interval; extern time_t ip6_log_time; extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */ extern int ip6_dad_count; /* DupAddrDetectionTransmits */ +extern int ip6_only_allow_rfc4193_prefix; /* RFC4193 Unique Local Unicast Prefixes only */ extern u_int32_t ip6_flow_seq; extern int ip6_auto_flowlabel; @@ -325,9 +434,17 @@ 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_prefer_tempaddr; /* whether to prefer temporary addresses + in the source address selection */ +extern int ip6_use_defzone; /* whether to use the default scope zone + when unspecified */ extern struct pr_usrreqs rip6_usrreqs; extern struct pr_usrreqs icmp6_dgram_usrreqs; + +extern int ip6_doscopedroute; +extern int ip6_restrictrecvif; + struct sockopt; struct inpcb; @@ -343,48 +460,69 @@ void ip6_init(void); void ip6_input(struct mbuf *); struct in6_ifaddr *ip6_getdstifaddr(struct mbuf *); void ip6_freepcbopts(struct ip6_pktopts *); -void ip6_freemoptions(struct ip6_moptions *); -int ip6_unknown_opt(u_int8_t *, struct mbuf *, int, int); +int ip6_unknown_opt(u_int8_t *, struct mbuf *, int); char * ip6_get_prevhdr(struct mbuf *, int); int ip6_nexthdr(struct mbuf *, int, int, int *); int ip6_lasthdr(struct mbuf *, int, int, int *); +extern void ip6_moptions_init(void); +extern struct ip6_moptions *ip6_allocmoptions(int); +extern void im6o_addref(struct ip6_moptions *, int); +extern void im6o_remref(struct ip6_moptions *); + struct ip6aux *ip6_addaux(struct mbuf *); struct ip6aux *ip6_findaux(struct mbuf *); void ip6_delaux(struct mbuf *); +extern void ip6_destroyaux(struct ip6aux *); +extern void ip6_copyaux(struct ip6aux *, struct ip6aux *); int ip6_mforward(struct ip6_hdr *, struct ifnet *, struct mbuf *); int ip6_process_hopopts(struct mbuf *, u_int8_t *, int, u_int32_t *, u_int32_t *); -void ip6_savecontrol(struct inpcb *, struct mbuf **, struct ip6_hdr *, - struct mbuf *); -void ip6_forward(struct mbuf *, struct route_in6 *, int, int); - +struct mbuf **ip6_savecontrol_v4(struct inpcb *, struct mbuf *, + struct mbuf **, int *); +int ip6_savecontrol(struct inpcb *, struct mbuf *, struct mbuf **); +struct mbuf *ip6_forward(struct mbuf *, struct route_in6 *, int); +void ip6_notify_pmtu __P((struct inpcb *, struct sockaddr_in6 *, + u_int32_t *)); void ip6_mloopback(struct ifnet *, struct mbuf *, struct sockaddr_in6 *); -int ip6_output(struct mbuf *, struct ip6_pktopts *, - struct route_in6 *, - int, - struct ip6_moptions *, struct ifnet **, int locked); +int ip6_output(struct mbuf *, struct ip6_pktopts *, struct route_in6 *, + int, struct ip6_moptions *, struct ifnet **, struct ip6_out_args *); +int ip6_output_list(struct mbuf *, int, struct ip6_pktopts *, + struct route_in6 *, int, struct ip6_moptions *, struct ifnet **, + struct ip6_out_args *); int ip6_ctloutput(struct socket *, struct sockopt *sopt); void ip6_initpktopts(struct ip6_pktopts *); int ip6_setpktoptions(struct mbuf *, struct ip6_pktopts *, int, int); -void ip6_clearpktopts(struct ip6_pktopts *, int, int); +void ip6_clearpktopts(struct ip6_pktopts *, int); struct ip6_pktopts *ip6_copypktopts(struct ip6_pktopts *, int); int ip6_optlen(struct inpcb *); -int route6_input(struct mbuf **, int *); +int route6_input(struct mbuf **, int *, int); void frag6_init(void); -int frag6_input(struct mbuf **, int *); +int frag6_input(struct mbuf **, int *, int); void frag6_slowtimo(void); void frag6_drain(void); -int rip6_input(struct mbuf **mp, int *offset); +int rip6_input(struct mbuf **, int *, int); void rip6_ctlinput(int, struct sockaddr *, void *); int rip6_ctloutput(struct socket *so, struct sockopt *sopt); -int rip6_output(struct mbuf *, struct socket *, struct sockaddr_in6 *, struct mbuf *); +int rip6_output(struct mbuf *, struct socket *, struct sockaddr_in6 *, struct mbuf *, int); + +int dest6_input(struct mbuf **, int *, int); +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 *); +int in6_selectroute(struct sockaddr_in6 *, struct sockaddr_in6 *, + struct ip6_pktopts *, struct ip6_moptions *, struct route_in6 *, + struct ifnet **, struct rtentry **, int, const struct ip6_out_args *); +int ip6_setpktopts(struct mbuf *control, struct ip6_pktopts *opt, struct ip6_pktopts *stickyopt, int uproto); +u_int32_t ip6_randomid(void); +u_int32_t ip6_randomflowlabel(void); -int dest6_input(struct mbuf **, int *); #endif /* KERNEL */ #endif /* KERNEL_PRIVATE */