1 /*!\file netinet6/ip6_var.h
5 /* $FreeBSD: src/sys/netinet6/ip6_var.h,v 1.9 2002/07/25 17:40:45 ume Exp $ */
6 /* $KAME: ip6_var.h,v 1.62 2001/05/03 14:51:48 itojun Exp $ */
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59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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69 * @(#)ip_var.h 8.1 (Berkeley) 6/10/93
72 #ifndef _NETINET6_IP6_VAR_H_
73 #define _NETINET6_IP6_VAR_H_
75 #include <sys/queue.h>
77 #if !defined(__BORLANDC__) /* stop warnings for undefined structs */
79 * IP6 reassembly queue structure. Each fragment
80 * being reassembled is attached to one of these structures.
85 u_int8_t ip6q_nxt; /* ip6f_nxt in first fragment */
87 struct ip6asfrag *ip6q_down;
88 struct ip6asfrag *ip6q_up;
92 struct in6_addr ip6q_src, ip6q_dst;
93 struct ip6q *ip6q_next;
94 struct ip6q *ip6q_prev;
95 int ip6q_unfrglen; /* len of unfragmentable part */
102 u_int32_t ip6af_head;
106 /* must not override the above members during reassembling */
107 struct ip6asfrag *ip6af_down;
108 struct ip6asfrag *ip6af_up;
109 struct mbuf *ip6af_m;
110 int ip6af_offset; /* offset in ip6af_m to next header */
111 int ip6af_frglen; /* fragmentable part length */
112 int ip6af_off; /* fragment offset */
113 u_int16_t ip6af_mff; /* more fragment bit in frag off */
116 #define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m))
118 struct ip6_moptions {
119 struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
120 u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
121 u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
122 LIST_HEAD(dummy, in6_multi_mship) im6o_memberships;
124 #endif /* __BORLANDC__ */
126 #ifndef _NETINET6_IN6_H_
128 struct rtentry *ro_rt;
129 struct sockaddr_in6 ro_dst;
134 * Control options for outgoing packets
137 /* Routing header related info */
138 #if !defined(__BORLANDC__)
139 struct ip6po_rhinfo {
140 struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */
141 struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */
143 #define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr
144 #define ip6po_route ip6po_rhinfo.ip6po_rhi_route
147 struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */
148 int ip6po_hlim; /* Hoplimit for outgoing packets */
150 /* Outgoing IF/address information */
151 struct in6_pktinfo *ip6po_pktinfo;
153 struct sockaddr *ip6po_nexthop; /* Next-hop address */
155 struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */
157 /* Destination options header (before a routing header) */
158 struct ip6_dest *ip6po_dest1;
160 /* Routing header related info. */
161 struct ip6po_rhinfo ip6po_rhinfo;
163 /* Destination options header (after a routing header) */
164 struct ip6_dest *ip6po_dest2;
166 #endif /* __BORLANDC__ */
169 * Control options for incoming packets
173 u_quad_t ip6s_total; /* total packets received */
174 u_quad_t ip6s_tooshort; /* packet too short */
175 u_quad_t ip6s_toosmall; /* not enough data */
176 u_quad_t ip6s_fragments; /* fragments received */
177 u_quad_t ip6s_fragdropped; /* frags dropped(dups, out of space) */
178 u_quad_t ip6s_fragtimeout; /* fragments timed out */
179 u_quad_t ip6s_fragoverflow; /* fragments that exceeded limit */
180 u_quad_t ip6s_forward; /* packets forwarded */
181 u_quad_t ip6s_cantforward; /* packets rcvd for unreachable dest */
182 u_quad_t ip6s_redirectsent; /* packets forwarded on same net */
183 u_quad_t ip6s_delivered; /* datagrams delivered to upper level*/
184 u_quad_t ip6s_localout; /* total ip packets generated here */
185 u_quad_t ip6s_odropped; /* lost packets due to nobufs, etc. */
186 u_quad_t ip6s_reassembled; /* total packets reassembled ok */
187 u_quad_t ip6s_fragmented; /* datagrams sucessfully fragmented */
188 u_quad_t ip6s_ofragments; /* output fragments created */
189 u_quad_t ip6s_cantfrag; /* don't fragment flag was set, etc. */
190 u_quad_t ip6s_badoptions; /* error in option processing */
191 u_quad_t ip6s_noroute; /* packets discarded due to no route */
192 u_quad_t ip6s_badvers; /* ip6 version != 6 */
193 u_quad_t ip6s_rawout; /* total raw ip packets generated */
194 u_quad_t ip6s_badscope; /* scope error */
195 u_quad_t ip6s_notmember; /* don't join this multicast group */
196 u_quad_t ip6s_nxthist[256]; /* next header history */
197 u_quad_t ip6s_m1; /* one mbuf */
198 u_quad_t ip6s_m2m[32]; /* two or more mbuf */
199 u_quad_t ip6s_mext1; /* one ext mbuf */
200 u_quad_t ip6s_mext2m; /* two or more ext mbuf */
201 u_quad_t ip6s_exthdrtoolong; /* ext hdr are not continuous */
202 u_quad_t ip6s_nogif; /* no match gif found */
203 u_quad_t ip6s_toomanyhdr; /* discarded due to too many headers */
206 * statistics for improvement of the source address selection
208 * XXX: hardcoded 16 = # of ip6 multicast scope types + 1
210 /* number of times that address selection fails */
211 u_quad_t ip6s_sources_none;
212 /* number of times that an address on the outgoing I/F is chosen */
213 u_quad_t ip6s_sources_sameif[16];
214 /* number of times that an address on a non-outgoing I/F is chosen */
215 u_quad_t ip6s_sources_otherif[16];
217 * number of times that an address that has the same scope
218 * from the destination is chosen.
220 u_quad_t ip6s_sources_samescope[16];
222 * number of times that an address that has a different scope
223 * from the destination is chosen.
225 u_quad_t ip6s_sources_otherscope[16];
226 /* number of times that an deprecated address is chosen */
227 u_quad_t ip6s_sources_deprecated[16];
229 u_quad_t ip6s_forward_cachehit;
230 u_quad_t ip6s_forward_cachemiss;
235 * IPv6 onion peeling state.
236 * it will be initialized when we come into ip6_input().
237 * XXX do not make it a kitchen sink!
240 u_int32_t ip6a_flags;
241 #define IP6A_SWAP 0x01 /* swapped home/care-of on packet */
242 #define IP6A_HASEEN 0x02 /* HA was present */
243 #define IP6A_BRUID 0x04 /* BR Unique Identifier was present */
244 #define IP6A_RTALERTSEEN 0x08 /* rtalert present */
247 struct in6_addr ip6a_careof; /* care-of address of the peer */
248 struct in6_addr ip6a_home; /* home address of the peer */
249 u_int16_t ip6a_bruid; /* BR unique identifier */
252 struct in6_ifaddr *ip6a_dstia6; /* my ifaddr that matches ip6_dst */
255 u_int16_t ip6a_rtalert; /* rtalert option value */
258 * decapsulation history will be here.
259 * with IPsec it may not be accurate.
265 /* flags passed to ip6_output as last parameter */
266 #define IPV6_DADOUTPUT 0x01 /* DAD */
267 #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */
268 #define IPV6_MINMTU 0x04 /* use minimum MTU (IPV6_USE_MIN_MTU) */
270 extern struct ip6stat ip6stat; /* statistics */
271 extern u_int32_t ip6_id; /* fragment identifier */
272 extern int ip6_defhlim; /* default hop limit */
273 extern int ip6_defmcasthlim; /* default multicast hop limit */
274 extern int ip6_forwarding; /* act as router? */
275 extern int ip6_forward_srcrt; /* forward src-routed? */
276 extern int ip6_gif_hlim; /* Hop limit for gif encap packet */
277 extern int ip6_use_deprecated; /* allow deprecated addr as source */
278 extern int ip6_rr_prune; /* router renumbering prefix
279 * walk list every 5 sec. */
280 extern int ip6_v6only;
282 extern struct socket *ip6_mrouter; /* multicast routing daemon */
283 extern int ip6_sendredirects; /* send IP redirects when forwarding? */
284 extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */
285 extern int ip6_sourcecheck; /* Verify source interface */
286 extern int ip6_sourcecheck_interval; /* Interval between log messages */
287 extern int ip6_accept_rtadv; /* Acts as a host not a router */
288 extern int ip6_keepfaith; /* Firewall Aided Internet Translator */
289 extern int ip6_log_interval;
290 extern time_t ip6_log_time;
291 extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */
292 extern int ip6_dad_count; /* DupAddrDetectionTransmits */
294 extern u_int32_t ip6_flow_seq;
295 extern int ip6_auto_flowlabel;
296 extern int ip6_auto_linklocal;
298 extern int ip6_anonportmin; /* minimum ephemeral port */
299 extern int ip6_anonportmax; /* maximum ephemeral port */
300 extern int ip6_lowportmin; /* minimum reserved port */
301 extern int ip6_lowportmax; /* maximum reserved port */
303 extern int ip6_use_tempaddr; /* whether to use temporary addresses. */
305 extern struct pr_usrreqs rip6_usrreqs;
310 int icmp6_ctloutput __P((struct socket *, struct sockopt *sopt));
313 void ip6_init __P((void));
314 void ip6intr __P((void));
315 void ip6_input __P((struct mbuf *));
316 struct in6_ifaddr *ip6_getdstifaddr __P((struct mbuf *));
317 void ip6_freepcbopts __P((struct ip6_pktopts *));
318 void ip6_freemoptions __P((struct ip6_moptions *));
319 int ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int));
320 char * ip6_get_prevhdr __P((struct mbuf *, int));
321 int ip6_nexthdr __P((struct mbuf *, int, int, int *));
322 int ip6_lasthdr __P((struct mbuf *, int, int, int *));
324 struct mbuf *ip6_addaux __P((struct mbuf *));
325 struct mbuf *ip6_findaux __P((struct mbuf *));
326 void ip6_delaux __P((struct mbuf *));
328 int ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *));
329 int ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *,
331 void ip6_savecontrol __P((struct inpcb *, struct mbuf **, struct ip6_hdr *,
333 void ip6_notify_pmtu __P((struct inpcb *, struct sockaddr_in6 *,
335 int ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
337 void ip6_forward __P((struct mbuf *, int));
339 void ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *));
340 int ip6_output __P((struct mbuf *, struct ip6_pktopts *,
343 struct ip6_moptions *, struct ifnet **));
344 int ip6_ctloutput __P((struct socket *, struct sockopt *sopt));
345 void init_ip6pktopts __P((struct ip6_pktopts *));
346 int ip6_setpktoptions __P((struct mbuf *, struct ip6_pktopts *, int, int));
347 void ip6_clearpktopts __P((struct ip6_pktopts *, int, int));
348 struct ip6_pktopts *ip6_copypktopts __P((struct ip6_pktopts *, int));
349 int ip6_optlen __P((struct inpcb *));
351 int route6_input __P((struct mbuf **, int *, int));
353 void frag6_init __P((void));
354 int frag6_input __P((struct mbuf **, int *, int));
355 void frag6_slowtimo __P((void));
356 void frag6_drain __P((void));
358 void rip6_init __P((void));
359 int rip6_input __P((struct mbuf **mp, int *offp, int proto));
360 void rip6_ctlinput __P((int, struct sockaddr *, void *));
361 int rip6_ctloutput __P((struct socket *so, struct sockopt *sopt));
362 int rip6_output __P((struct mbuf *, ...));
363 int rip6_usrreq __P((struct socket *,
364 int, struct mbuf *, struct mbuf *, struct mbuf *, struct thread *));
366 int dest6_input __P((struct mbuf **, int *, int));
367 int none_input __P((struct mbuf **, int *, int));
370 #endif /* !_NETINET6_IP6_VAR_H_ */