1 //==========================================================================
3 // include/netinet6_ip6_var.h
7 //==========================================================================
8 //####BSDCOPYRIGHTBEGIN####
10 // -------------------------------------------
12 // Portions of this software may have been derived from OpenBSD or other sources,
13 // and are covered by the appropriate copyright disclaimers included herein.
15 // -------------------------------------------
17 //####BSDCOPYRIGHTEND####
18 //==========================================================================
19 //#####DESCRIPTIONBEGIN####
22 // Contributors: gthomas
28 //####DESCRIPTIONEND####
30 //==========================================================================
32 /* $OpenBSD: ip6_var.h,v 1.2 1999/12/10 10:04:28 angelos Exp $ */
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95 * @(#)ip_var.h 8.1 (Berkeley) 6/10/93
98 #ifndef _NETINET6_IP6_VAR_H_
99 #define _NETINET6_IP6_VAR_H_
102 * IP6 reassembly queue structure. Each fragment
103 * being reassembled is attached to one of these structures.
110 struct ip6asfrag *ip6q_down;
111 struct ip6asfrag *ip6q_up;
115 struct in6_addr ip6q_src, ip6q_dst;
116 struct ip6q *ip6q_next;
117 struct ip6q *ip6q_prev;
129 /* must not override the above members during reassembling */
130 struct ip6asfrag *ip6af_down;
131 struct ip6asfrag *ip6af_up;
134 struct mbuf *ip6af_m;
135 u_long ip6af_offset; /* offset where next header starts */
136 u_short ip6af_frglen; /* fragmentable part length */
140 #define IP6_REASS_MBUF(ip6af) (*(struct mbuf **)&((ip6af)->ip6af_m))
142 struct ip6_moptions {
143 struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
144 u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
145 u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
146 LIST_HEAD(, in6_multi_mship) im6o_memberships;
150 * Control options for outgoing packets
153 /* Routing header related info */
154 struct ip6po_rhinfo {
155 struct ip6_rthdr *ip6po_rhi_rthdr; /* Routing header */
156 struct route_in6 ip6po_rhi_route; /* Route to the 1st hop */
158 #define ip6po_rthdr ip6po_rhinfo.ip6po_rhi_rthdr
159 #define ip6po_route ip6po_rhinfo.ip6po_rhi_route
162 struct mbuf *ip6po_m; /* Pointer to mbuf storing the data */
163 int ip6po_hlim; /* Hoplimit for outgoing packets */
164 struct in6_pktinfo *ip6po_pktinfo; /* Outgoing IF/address information */
165 struct sockaddr *ip6po_nexthop; /* Next-hop address */
166 struct ip6_hbh *ip6po_hbh; /* Hop-by-Hop options header */
167 struct ip6_dest *ip6po_dest1; /* Destination options header(1st part) */
168 struct ip6po_rhinfo ip6po_rhinfo; /* Routing header related info. */
169 struct ip6_dest *ip6po_dest2; /* Destination options header(2nd part) */
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 */
204 /* XXX the following two items are not really AF_INET6 thing */
205 u_quad_t ip6s_pulldown; /* # of calls to m_pulldown */
206 u_quad_t ip6s_pulldown_copy; /* # of mbuf copies in m_pulldown */
207 u_quad_t ip6s_pulldown_alloc; /* # of mbuf allocs in m_pulldown */
211 /* flags passed to ip6_output as last parameter */
212 #define IPV6_DADOUTPUT 0x01 /* DAD */
213 #define IPV6_FORWARDING 0x02 /* most of IPv6 header exists */
215 extern struct ip6stat ip6stat; /* statistics */
216 extern u_int32_t ip6_id; /* fragment identifier */
217 extern int ip6_defhlim; /* default hop limit */
218 extern int ip6_defmcasthlim; /* default multicast hop limit */
219 extern int ip6_forwarding; /* act as router? */
220 extern int ip6_forward_srcrt; /* forward src-routed? */
221 extern int ip6_gif_hlim; /* Hop limit for gif encap packet */
222 extern int ip6_use_deprecated; /* allow deprecated addr as source */
223 extern int ip6_rr_prune; /* router renumbering prefix
224 * walk list every 5 sec. */
225 #ifdef MAPPED_ADDR_ENABLED
226 extern int ip6_mapped_addr_on;
227 #endif /* MAPPED_ADDR_ENABLED */
229 extern struct socket *ip6_mrouter; /* multicast routing daemon */
230 extern int ip6_sendredirects; /* send IP redirects when forwarding? */
231 extern int ip6_maxfragpackets; /* Maximum packets in reassembly queue */
232 extern int ip6_sourcecheck; /* Verify source interface */
233 extern int ip6_sourcecheck_interval; /* Interval between log messages */
234 extern int ip6_accept_rtadv; /* Acts as a host not a router */
235 extern int ip6_keepfaith; /* Firewall Aided Internet Translator */
236 extern int ip6_log_interval;
237 extern time_t ip6_log_time;
238 extern int ip6_hdrnestlimit; /* upper limit of # of extension headers */
239 extern int ip6_dad_count; /* DupAddrDetectionTransmits */
241 extern u_int32_t ip6_flow_seq;
242 extern int ip6_auto_flowlabel;
247 int icmp6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
249 void ip6_init __P((void));
250 void ip6intr __P((void));
251 void ip6_input __P((struct mbuf *));
252 void ip6_freemoptions __P((struct ip6_moptions *));
253 int ip6_unknown_opt __P((u_int8_t *, struct mbuf *, int));
254 char * ip6_get_prevhdr __P((struct mbuf *, int));
255 int ip6_mforward __P((struct ip6_hdr *, struct ifnet *, struct mbuf *));
256 int ip6_process_hopopts __P((struct mbuf *, u_int8_t *, int, u_int32_t *,
258 void ip6_savecontrol __P((struct inpcb *, struct mbuf **, struct ip6_hdr *,
260 int ip6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
262 void ip6_forward __P((struct mbuf *, int));
264 void ip6_mloopback __P((struct ifnet *, struct mbuf *, struct sockaddr_in6 *));
265 int ip6_output __P((struct mbuf *, struct ip6_pktopts *,
266 struct route_in6 *, int,
267 struct ip6_moptions *, struct ifnet **));
268 int ip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
269 int ip6_setpktoptions __P((struct mbuf *, struct ip6_pktopts *, int));
270 int ip6_optlen __P((struct inpcb *));
272 int route6_input __P((struct mbuf **, int *, int));
274 void frag6_init __P((void));
275 int frag6_input __P((struct mbuf **, int *, int));
276 void frag6_slowtimo __P((void));
277 void frag6_drain __P((void));
279 void rip6_init __P((void));
280 int rip6_input __P((struct mbuf **mp, int *offp, int proto));
281 int rip6_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
282 int rip6_output __P((struct mbuf *, ...));
283 int rip6_usrreq __P((struct socket *,
284 int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *));
286 int dest6_input __P((struct mbuf **, int *, int));
287 int none_input __P((struct mbuf **, int *, int));
290 #endif /* !_NETINET6_IP6_VAR_H_ */