/*
- * Copyright (c) 2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#define _NETINET6_IP6_VAR_H_
#include <sys/appleapiopts.h>
-#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;
#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;
};
/*
#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;
- 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) */
/* 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 */
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 */
* 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
};
/* 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 <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 */
+};
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? */
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 */
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 */
-#ifdef MROUTING
+#if MROUTING
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;
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;
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 */
projects / apple / xnu.git / blobdiff