FreeBSD/Linux Kernel Cross Reference
sys/netiso/clnp.h
1 /* $NetBSD: clnp.h,v 1.16 2003/08/07 16:33:32 agc Exp $ */
2
3 /*-
4 * Copyright (c) 1991, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)clnp.h 8.2 (Berkeley) 4/16/94
32 */
33
34 /***********************************************************
35 Copyright IBM Corporation 1987
36
37 All Rights Reserved
38
39 Permission to use, copy, modify, and distribute this software and its
40 documentation for any purpose and without fee is hereby granted,
41 provided that the above copyright notice appear in all copies and that
42 both that copyright notice and this permission notice appear in
43 supporting documentation, and that the name of IBM not be
44 used in advertising or publicity pertaining to distribution of the
45 software without specific, written prior permission.
46
47 IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
48 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
49 IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
50 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
51 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
52 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
53 SOFTWARE.
54
55 ******************************************************************/
56
57 /*
58 * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
59 */
60
61 /* should be config option but cpp breaks with too many #defines */
62 #define DECBIT
63
64 /*
65 * Return true if the mbuf is a cluster mbuf
66 */
67 #define IS_CLUSTER(m) ((m)->m_flags & M_EXT)
68
69 /*
70 * Move the halfword into the two characters
71 */
72 #define HTOC(msb, lsb, hword)\
73 (msb) = (u_char)((hword) >> 8);\
74 (lsb) = (u_char)((hword) & 0xff)
75 /*
76 * Move the two charcters into the halfword
77 */
78 #define CTOH(msb, lsb, hword)\
79 (hword) = ((msb) << 8) | (lsb)
80
81 /*
82 * Return true if the checksum has been set - ie. the checksum is
83 * not zero
84 */
85 #define CKSUM_REQUIRED(clnp)\
86 (((clnp)->cnf_cksum_msb != 0) || ((clnp)->cnf_cksum_lsb != 0))
87
88 /*
89 * Fixed part of clnp header
90 */
91 struct clnp_fixed {
92 u_char cnf_proto_id; /* network layer protocol identifier */
93 u_char cnf_hdr_len; /* length indicator (octets) */
94 u_char cnf_vers; /* version/protocol identifier
95 * extension */
96 u_char cnf_ttl;/* lifetime (500 milliseconds) */
97 u_char cnf_type; /* type code */
98 /* Includes err_ok, more_segs, and seg_ok */
99 u_char cnf_seglen_msb; /* pdu segment length (octets) high
100 * byte */
101 u_char cnf_seglen_lsb; /* pdu segment length (octets) low
102 * byte */
103 u_char cnf_cksum_msb; /* checksum high byte */
104 u_char cnf_cksum_lsb; /* checksum low byte */
105 } __attribute__((packed));
106 #define CNF_TYPE 0x1f
107 #define CNF_ERR_OK 0x20
108 #define CNF_MORE_SEGS 0x40
109 #define CNF_SEG_OK 0x80
110
111 #define CLNP_CKSUM_OFF 0x07 /* offset of checksum */
112
113 #define clnl_fixed clnp_fixed
114
115 /*
116 * Segmentation part of clnp header
117 */
118 struct clnp_segment {
119 u_short cng_id; /* data unit identifier */
120 u_short cng_off;/* segment offset */
121 u_short cng_tot_len; /* total length */
122 };
123
124 /*
125 * Clnp fragment reassembly structures:
126 *
127 * All packets undergoing reassembly are linked together in
128 * clnp_fragl structures. Each clnp_fragl structure contains a
129 * pointer to the original clnp packet header, as well as a
130 * list of packet fragments. Each packet fragment
131 * is headed by a clnp_frag structure. This structure contains the
132 * offset of the first and last byte of the fragment, as well as
133 * a pointer to the data (an mbuf chain) of the fragment.
134 */
135
136 /*
137 * NOTE:
138 * The clnp_frag structure is stored in an mbuf immedately
139 * preceding the fragment data. Since there are words in
140 * this struct, it must be word aligned.
141 *
142 * NOTE:
143 * All the fragment code assumes that the entire clnp header is
144 * contained in the first mbuf.
145 */
146 struct clnp_frag {
147 u_int cfr_first; /* offset of first byte of this frag */
148 u_int cfr_last; /* offset of last byte of this frag */
149 u_int cfr_bytes; /* bytes to shave to get to data */
150 struct mbuf *cfr_data; /* ptr to data for this frag */
151 struct clnp_frag *cfr_next; /* next fragment in list */
152 };
153
154 struct clnp_fragl {
155 struct iso_addr cfl_src;/* source of the pkt */
156 struct iso_addr cfl_dst;/* destination of the pkt */
157 u_short cfl_id; /* id of the pkt */
158 u_char cfl_ttl;/* current ttl of pkt */
159 u_short cfl_last; /* offset of last byte of packet */
160 struct mbuf *cfl_orighdr; /* ptr to original header */
161 struct clnp_frag *cfl_frags; /* linked list of fragments for pkt */
162 struct clnp_fragl *cfl_next; /* next pkt being reassembled */
163 };
164
165 /*
166 * The following structure is used to index into an options section
167 * of a clnp datagram. These values can be used without worry that
168 * offset or length fields are invalid or too big, etc. That is,
169 * the consistancy of the options will be guaranteed before this
170 * structure is filled in. Any pointer (field ending in p) is
171 * actually the offset from the beginning of the mbuf the option
172 * is contained in. A value of NULL for any pointer
173 * means that the option is not present. The length any option
174 * does not include the option code or option length fields.
175 */
176 struct clnp_optidx {
177 u_short cni_securep; /* ptr to start of security option */
178 char cni_secure_len; /* length of entire security option */
179
180 u_short cni_srcrt_s; /* offset of start of src rt option */
181 u_short cni_srcrt_len; /* length of entire src rt option */
182
183 u_short cni_recrtp; /* ptr to beginning of recrt option */
184 char cni_recrt_len; /* length of entire recrt option */
185
186 char cni_priorp; /* ptr to priority option */
187
188 u_short cni_qos_formatp; /* ptr to format of qos
189 * option */
190 char cni_qos_len; /* length of entire qos option */
191
192 u_char cni_er_reason; /* reason from ER pdu option */
193
194 /* ESIS options */
195
196 u_short cni_esct; /* value from ISH ESCT option */
197
198 u_short cni_netmaskp; /* ptr to beginning of netmask option */
199 char cni_netmask_len; /* length of entire netmask
200 * option */
201
202 u_short cni_snpamaskp; /* ptr to start of snpamask option */
203 char cni_snpamask_len; /* length of entire snpamask
204 * option */
205
206 };
207
208 #define ER_INVALREAS 0xff /* code for invalid ER pdu discard reason */
209
210 /* given an mbuf and addr of option, return offset from data of mbuf */
211 #define CLNP_OPTTOOFF(m, opt) ((u_short) (opt - mtod(m, caddr_t)))
212
213 /* given an mbuf and offset of option, return address of option */
214 #define CLNP_OFFTOOPT(m, off) ((caddr_t) (mtod(m, caddr_t) + off))
215
216 /* return true iff src route is valid */
217 #define CLNPSRCRT_VALID(oidx) ((oidx) && (oidx->cni_srcrt_s))
218
219 /* return the offset field of the src rt */
220 #define CLNPSRCRT_OFF(oidx, options)\
221 (*((u_char *)(CLNP_OFFTOOPT(options, oidx->cni_srcrt_s) + 1)))
222
223 /* return the type field of the src rt */
224 #define CLNPSRCRT_TYPE(oidx, options)\
225 ((u_char)(*(CLNP_OFFTOOPT(options, oidx->cni_srcrt_s))))
226
227 /* return the length of the current address */
228 #define CLNPSRCRT_CLEN(oidx, options)\
229 ((u_char)(*(CLNP_OFFTOOPT(options, oidx->cni_srcrt_s) + CLNPSRCRT_OFF(oidx, options) - 1)))
230
231 /* return the address of the current address */
232 #define CLNPSRCRT_CADDR(oidx, options)\
233 ((caddr_t)(CLNP_OFFTOOPT(options, oidx->cni_srcrt_s) + CLNPSRCRT_OFF(oidx, options)))
234
235 /*
236 * return true if the src route has run out of routes this is true if the
237 * offset of next route is greater than the end of the rt
238 */
239 #define CLNPSRCRT_TERM(oidx, options)\
240 (CLNPSRCRT_OFF(oidx, options) > oidx->cni_srcrt_len)
241
242 /*
243 * Options a user can set/get
244 */
245 #define CLNPOPT_FLAGS 0x01 /* flags: seg permitted, no er xmit, etc */
246 #define CLNPOPT_OPTS 0x02 /* datagram options */
247
248 /*
249 * Values for particular datagram options
250 */
251 #define CLNPOVAL_PAD 0xcc /* padding */
252 #define CLNPOVAL_SECURE 0xc5 /* security */
253 #define CLNPOVAL_SRCRT 0xc8 /* source routing */
254 #define CLNPOVAL_RECRT 0xcb /* record route */
255 #define CLNPOVAL_QOS 0xc3 /* quality of service */
256 #define CLNPOVAL_PRIOR 0xcd /* priority */
257 #define CLNPOVAL_ERREAS 0xc1 /* ER PDU ONLY: reason for discard */
258
259 #define CLNPOVAL_SRCSPEC 0x40 /* source address specific */
260 #define CLNPOVAL_DSTSPEC 0x80 /* destination address specific */
261 #define CLNPOVAL_GLOBAL 0xc0 /* globally unique */
262
263 /* Globally Unique QOS */
264 #define CLNPOVAL_SEQUENCING 0x10 /* sequencing preferred */
265 #define CLNPOVAL_CONGESTED 0x08 /* congestion experienced */
266 #define CLNPOVAL_LOWDELAY 0x04 /* low transit delay */
267
268 #define CLNPOVAL_PARTRT 0x00 /* partial source routing */
269 #define CLNPOVAL_COMPRT 0x01 /* complete source routing */
270
271 /*
272 * Clnp flags used in a control block flags field.
273 * NOTE: these must be out of the range of bits defined in ../net/raw_cb.h
274 */
275 #define CLNP_NO_SEG 0x010 /* segmentation not permitted */
276 #define CLNP_NO_ER 0x020 /* do not generate ERs */
277 #define CLNP_SEND_RAW 0x080 /* send pkt as RAW DT not TP DT */
278 #define CLNP_NO_CKSUM 0x100 /* don't use clnp checksum */
279 #define CLNP_ECHO 0x200 /* send echo request */
280 #define CLNP_NOCACHE 0x400 /* don't store cache information */
281 #define CLNP_ECHOR 0x800 /* send echo reply */
282
283 /* valid clnp flags */
284 #define CLNP_VFLAGS \
285 (CLNP_SEND_RAW|CLNP_NO_SEG|CLNP_NO_ER|CLNP_NO_CKSUM|\
286 CLNP_ECHO|CLNP_NOCACHE|CLNP_ECHOR)
287
288 /*
289 * Constants used by clnp
290 */
291 #define CLNP_HDR_MIN (sizeof (struct clnp_fixed))
292 #define CLNP_HDR_MAX (254)
293 #define CLNP_TTL_UNITS 2 /* 500 milliseconds */
294 #define CLNP_TTL 15*CLNP_TTL_UNITS /* time to live (seconds) */
295 #define ISO8473_V1 0x01
296
297 /*
298 * Clnp packet types
299 * In order to test raw clnp and tp/clnp simultaneously, a third type of
300 * packet has been defined: CLNP_RAW. This is done so that the input
301 * routine can switch to the correct input routine (rclnp_input or
302 * tpclnp_input) based on the type field. If clnp had a higher level
303 * protocol field, this would not be necessary.
304 */
305 #define CLNP_DT 0x1C /* normal data */
306 #define CLNP_ER 0x01 /* error report */
307 #define CLNP_RAW 0x1D /* debug only */
308 #define CLNP_EC 0x1E /* echo packet */
309 #define CLNP_ECR 0x1F /* echo reply */
310
311 /*
312 * ER pdu error codes
313 */
314 #define GEN_NOREAS 0x00 /* reason not specified */
315 #define GEN_PROTOERR 0x01 /* protocol procedure error */
316 #define GEN_BADCSUM 0x02 /* incorrect checksum */
317 #define GEN_CONGEST 0x03 /* pdu discarded due to congestion */
318 #define GEN_HDRSYNTAX 0x04 /* header syntax error */
319 #define GEN_SEGNEEDED 0x05 /* need segmentation but not allowed */
320 #define GEN_INCOMPLETE 0x06 /* incomplete pdu received */
321 #define GEN_DUPOPT 0x07 /* duplicate option */
322
323 /* address errors */
324 #define ADDR_DESTUNREACH 0x80 /* destination address unreachable */
325 #define ADDR_DESTUNKNOWN 0x81 /* destination address unknown */
326
327 /* source routing */
328 #define SRCRT_UNSPECERR 0x90 /* unspecified src rt error */
329 #define SRCRT_SYNTAX 0x91 /* syntax error in src rt field */
330 #define SRCRT_UNKNOWNADDR 0x92 /* unknown addr in src rt field */
331 #define SRCRT_BADPATH 0x93 /* path not acceptable */
332
333 /* lifetime */
334 #define TTL_EXPTRANSIT 0xa0 /* lifetime expired during transit */
335 #define TTL_EXPREASS 0xa1 /* lifetime expired during reassembly */
336
337 /* pdu discarded */
338 #define DISC_UNSUPPOPT 0xb0 /* unsupported option not specified? */
339 #define DISC_UNSUPPVERS 0xb1 /* unsupported protocol version */
340 #define DISC_UNSUPPSECURE 0xb2 /* unsupported security option */
341 #define DISC_UNSUPPSRCRT 0xb3 /* unsupported src rt option */
342 #define DISC_UNSUPPRECRT 0xb4 /* unsupported rec rt option */
343
344 /* reassembly */
345 #define REASS_INTERFERE 0xc0 /* reassembly interference */
346 #define CLNP_ERRORS 22
347
348
349 #ifdef CLNP_ER_CODES
350 u_char clnp_er_codes[CLNP_ERRORS] = {
351 GEN_NOREAS, GEN_PROTOERR, GEN_BADCSUM, GEN_CONGEST,
352 GEN_HDRSYNTAX, GEN_SEGNEEDED, GEN_INCOMPLETE, GEN_DUPOPT,
353 ADDR_DESTUNREACH, ADDR_DESTUNKNOWN,
354 SRCRT_UNSPECERR, SRCRT_SYNTAX, SRCRT_UNKNOWNADDR, SRCRT_BADPATH,
355 TTL_EXPTRANSIT, TTL_EXPREASS,
356 DISC_UNSUPPOPT, DISC_UNSUPPVERS, DISC_UNSUPPSECURE,
357 DISC_UNSUPPSRCRT, DISC_UNSUPPRECRT, REASS_INTERFERE
358 };
359 #endif
360
361 #ifdef TROLL
362
363 #define TR_DUPEND 0x01 /* duplicate end of fragment */
364 #define TR_DUPPKT 0x02 /* duplicate entire packet */
365 #define TR_DROPPKT 0x04 /* drop packet on output */
366 #define TR_TRIM 0x08 /* trim bytes from packet */
367 #define TR_CHANGE 0x10 /* change bytes in packet */
368 #define TR_MTU 0x20 /* delta to change device mtu */
369 #define TR_CHUCK 0x40 /* drop packet in rclnp_input */
370 #define TR_BLAST 0x80 /* force rclnp_output to blast many
371 * packet */
372 #define TR_RAWLOOP 0x100 /* make if_loop call clnpintr
373 * directly */
374 struct troll {
375 int tr_ops; /* operations to perform */
376 float tr_dup_size; /* % to duplicate */
377 float tr_dup_freq; /* frequency to duplicate packets */
378 float tr_drop_freq; /* frequence to drop packets */
379 int tr_mtu_adj; /* delta to adjust if mtu */
380 int tr_blast_cnt; /* # of pkts to blast out */
381 };
382
383 #define SN_OUTPUT(clcp, m)\
384 troll_output(clcp->clc_ifp, m, clcp->clc_firsthop, clcp->clc_rt)
385
386 #define SN_MTU(ifp, rt) (((rt && rt->rt_rmx.rmx_mtu) ?\
387 rt->rt_rmx.rmx_mtu : clnp_badmtu(ifp, rt, __LINE__, __FILE__))\
388 - trollctl.tr_mtu_adj)
389
390 #ifdef _KERNEL
391 extern float troll_random;
392 #endif
393
394 #else /* NO TROLL */
395
396 #define SN_OUTPUT(clcp, m)\
397 (*clcp->clc_ifp->if_output)(clcp->clc_ifp, m, clcp->clc_firsthop, \
398 clcp->clc_rt)
399
400 #define SN_MTU(ifp, rt) (((rt && rt->rt_rmx.rmx_mtu) ?\
401 rt->rt_rmx.rmx_mtu : clnp_badmtu(ifp, rt, __LINE__, __FILE__)))
402
403 #endif /* TROLL */
404
405 /*
406 * Macro to remove an address from a clnp header
407 */
408 #define CLNP_EXTRACT_ADDR(isoa, hoff, hend)\
409 {\
410 isoa.isoa_len = (u_char)*hoff;\
411 if ((((++hoff) + isoa.isoa_len) > hend) ||\
412 (isoa.isoa_len > 20) || (isoa.isoa_len == 0)) {\
413 hoff = (caddr_t)0;\
414 } else {\
415 (void) bcopy(hoff, (caddr_t)isoa.isoa_genaddr, \
416 isoa.isoa_len);\
417 hoff += isoa.isoa_len;\
418 }\
419 }
420
421 /*
422 * Macro to insert an address into a clnp header
423 */
424 #define CLNP_INSERT_ADDR(hoff, isoa)\
425 *hoff++ = (isoa).isoa_len;\
426 (void) bcopy((caddr_t)((isoa).isoa_genaddr), hoff, (isoa).isoa_len);\
427 hoff += (isoa).isoa_len;
428
429 /*
430 * Clnp hdr cache. Whenever a clnp packet is sent, a copy of the
431 * header is made and kept in this cache. In addition to a copy of
432 * the cached clnp hdr, the cache contains
433 * information necessary to determine whether the new packet
434 * to send requires a new header to be built.
435 */
436 struct clnp_cache {
437 /* these fields are used to check the validity of the cache */
438 struct iso_addr clc_dst;/* destination of packet */
439 struct mbuf *clc_options; /* ptr to options mbuf */
440 int clc_flags; /* flags passed to clnp_output */
441
442 /* these fields are state that clnp_output requires to finish the pkt */
443 int clc_segoff; /* offset of seg part of header */
444 struct rtentry *clc_rt; /* ptr to rtentry (points into the route
445 * structure) */
446 struct sockaddr *clc_firsthop; /* first hop of packet */
447 struct ifnet *clc_ifp;/* ptr to interface structure */
448 struct iso_ifaddr
449 *clc_ifa;/* ptr to interface address */
450 struct mbuf *clc_hdr;/* cached pkt hdr (finally)! */
451 };
452
453 #ifdef _KERNEL
454 struct iso_addr;
455 struct sockaddr_iso;
456 struct mbuf;
457 struct clnp_segment;
458 struct sockaddr;
459 struct rt_entry;
460 struct clnp_fragl;
461 struct clnp_optidx;
462 struct isopcb;
463 struct snpa_hdr;
464 struct iso_ifaddr;
465 struct route_iso;
466
467 /* clnp_debug.c */
468 char *clnp_hexp __P((char *, int, char *));
469 char *clnp_iso_addrp __P((struct iso_addr *));
470 char *clnp_saddr_isop __P((struct sockaddr_iso *));
471
472 /* clnp_er.c */
473 void clnp_er_input __P((struct mbuf *, struct iso_addr *, u_int));
474 void clnp_discard __P((struct mbuf *, u_int));
475 void clnp_emit_er __P((struct mbuf *, u_int));
476 int clnp_er_index __P((u_int));
477
478 int clnp_fragment __P((struct ifnet *, struct mbuf *, struct sockaddr *,
479 int, int, int, struct rtentry *));
480 struct mbuf *clnp_reass __P((struct mbuf *, struct iso_addr *,
481 struct iso_addr *, struct clnp_segment *));
482 int clnp_newpkt __P((struct mbuf *, struct iso_addr *, struct iso_addr *,
483 struct clnp_segment *));
484 void clnp_insert_frag __P((struct clnp_fragl *, struct mbuf *,
485 struct clnp_segment *));
486 struct mbuf *clnp_comp_pdu __P((struct clnp_fragl *));
487 #ifdef TROLL
488 float troll_random __P((void));
489 int troll_output __P((struct ifnet *, struct mbuf *, struct sockaddr *,
490 struct rtentry *));
491 #endif
492
493 /* clnp_input.c */
494 void clnp_init __P((void));
495 void clnlintr __P((void));
496 void clnp_input __P((struct mbuf *, ...));
497
498 /* clnp_options.c */
499 void clnp_update_srcrt __P((struct mbuf *, struct clnp_optidx *));
500 void clnp_dooptions __P((struct mbuf *, struct clnp_optidx *, struct ifnet *,
501 struct iso_addr *));
502 int clnp_set_opts __P((struct mbuf **, struct mbuf **));
503 int clnp_opt_sanity __P((struct mbuf *, caddr_t, int, struct clnp_optidx *));
504
505 /* clnp_output.c */
506 int clnp_output __P((struct mbuf *, ...));
507 void clnp_ctloutput __P((void));
508
509 /* clnp_raw.c */
510 void rclnp_input __P((struct mbuf *, ...));
511 int rclnp_output __P((struct mbuf *, ...));
512 int rclnp_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
513 int clnp_usrreq __P((struct socket *, int, struct mbuf *, struct mbuf *,
514 struct mbuf *, struct proc *));
515
516 /* clnp_subr.c */
517 struct mbuf *clnp_data_ck __P((struct mbuf *, int));
518 caddr_t clnp_extract_addr __P((caddr_t, int, struct iso_addr *,
519 struct iso_addr *));
520 int clnp_ours __P((struct iso_addr *));
521 void clnp_forward __P((struct mbuf *, int, struct iso_addr *,
522 struct clnp_optidx *, int, struct snpa_hdr *));
523 caddr_t clnp_insert_addr __P((caddr_t, struct iso_addr *, struct iso_addr *));
524 int clnp_route __P((struct iso_addr *, struct route_iso *, int,
525 struct sockaddr **, struct iso_ifaddr **));
526 int clnp_srcroute __P((struct mbuf *, struct clnp_optidx *, struct route_iso *,
527 struct sockaddr **, struct iso_ifaddr **,
528 struct iso_addr *));
529 int clnp_echoreply __P((struct mbuf *, int, struct sockaddr_iso *,
530 struct sockaddr_iso *, struct clnp_optidx *));
531 int clnp_badmtu __P((struct ifnet *, struct rtentry *, int, char *));
532 void clnp_ypocb __P((caddr_t, caddr_t, u_int));
533
534 /* clnp_timer.c */
535 struct clnp_fragl *clnp_freefrags __P((struct clnp_fragl *));
536 void clnp_slowtimo __P((void));
537 void clnp_drain __P((void));
538
539 #ifdef TROLL
540 struct troll trollctl;
541 #endif /* TROLL */
542
543 #endif /* _KERNEL */
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