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7bcd1bb8 KB |
1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.redist.c% | |
6 | * | |
ee808ea1 | 7 | * @(#)esis.c 7.24 (Berkeley) %G% |
7bcd1bb8 KB |
8 | */ |
9 | ||
35cb309b KS |
10 | /*********************************************************** |
11 | Copyright IBM Corporation 1987 | |
12 | ||
13 | All Rights Reserved | |
14 | ||
15 | Permission to use, copy, modify, and distribute this software and its | |
16 | documentation for any purpose and without fee is hereby granted, | |
17 | provided that the above copyright notice appear in all copies and that | |
18 | both that copyright notice and this permission notice appear in | |
19 | supporting documentation, and that the name of IBM not be | |
20 | used in advertising or publicity pertaining to distribution of the | |
21 | software without specific, written prior permission. | |
22 | ||
23 | IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
24 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
25 | IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
26 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
27 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
28 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
29 | SOFTWARE. | |
30 | ||
31 | ******************************************************************/ | |
32 | ||
33 | /* | |
34 | * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison | |
35 | */ | |
35cb309b KS |
36 | |
37 | #ifdef ISO | |
38 | ||
5548a02f KB |
39 | #include <sys/param.h> |
40 | #include <sys/systm.h> | |
41 | #include <sys/mbuf.h> | |
42 | #include <sys/domain.h> | |
43 | #include <sys/protosw.h> | |
44 | #include <sys/socket.h> | |
45 | #include <sys/socketvar.h> | |
46 | #include <sys/errno.h> | |
47 | #include <sys/kernel.h> | |
35cb309b | 48 | |
5548a02f KB |
49 | #include <net/if.h> |
50 | #include <net/if_dl.h> | |
51 | #include <net/route.h> | |
52 | #include <net/raw_cb.h> | |
35cb309b | 53 | |
5548a02f KB |
54 | #include <netiso/iso.h> |
55 | #include <netiso/iso_pcb.h> | |
56 | #include <netiso/iso_var.h> | |
57 | #include <netiso/iso_snpac.h> | |
58 | #include <netiso/clnl.h> | |
59 | #include <netiso/clnp.h> | |
60 | #include <netiso/clnp_stat.h> | |
61 | #include <netiso/esis.h> | |
62 | #include <netiso/argo_debug.h> | |
35cb309b KS |
63 | |
64 | /* | |
65 | * Global variables to esis implementation | |
66 | * | |
67 | * esis_holding_time - the holding time (sec) parameter for outgoing pdus | |
68 | * esis_config_time - the frequency (sec) that hellos are generated | |
fc0b162f KS |
69 | * esis_esconfig_time - suggested es configuration time placed in the |
70 | * ish. | |
35cb309b KS |
71 | * |
72 | */ | |
fc0b162f | 73 | struct rawcb esis_pcb; |
7c47dd7f | 74 | void esis_config(), snpac_age(); |
35cb309b KS |
75 | int esis_sendspace = 2048; |
76 | int esis_recvspace = 2048; | |
77 | short esis_holding_time = ESIS_HT; | |
78 | short esis_config_time = ESIS_CONFIG; | |
fc0b162f | 79 | short esis_esconfig_time = ESIS_CONFIG; |
35cb309b | 80 | extern int iso_systype; |
fc0b162f | 81 | struct sockaddr_dl esis_dl = { sizeof(esis_dl), AF_LINK }; |
c2bb180a | 82 | extern char all_es_snpa[], all_is_snpa[]; |
35cb309b | 83 | |
a50e2bc0 | 84 | #define EXTEND_PACKET(m, mhdr, cp)\ |
35cb309b KS |
85 | if (((m)->m_next = m_getclr(M_DONTWAIT, MT_HEADER)) == NULL) {\ |
86 | esis_stat.es_nomem++;\ | |
87 | m_freem(mhdr);\ | |
88 | return;\ | |
89 | } else {\ | |
35cb309b | 90 | (m) = (m)->m_next;\ |
35cb309b KS |
91 | (cp) = mtod((m), caddr_t);\ |
92 | } | |
93 | /* | |
94 | * FUNCTION: esis_init | |
95 | * | |
96 | * PURPOSE: Initialize the kernel portion of esis protocol | |
97 | * | |
98 | * RETURNS: nothing | |
99 | * | |
100 | * SIDE EFFECTS: | |
101 | * | |
102 | * NOTES: | |
103 | */ | |
104 | esis_init() | |
105 | { | |
106 | extern struct clnl_protosw clnl_protox[256]; | |
85162407 | 107 | int esis_input(), isis_input(); |
35cb309b | 108 | #ifdef ISO_X25ESIS |
85162407 | 109 | int x25esis_input(); |
ee808ea1 | 110 | #endif /* ISO_X25ESIS */ |
35cb309b | 111 | |
fc0b162f KS |
112 | esis_pcb.rcb_next = esis_pcb.rcb_prev = &esis_pcb; |
113 | llinfo_llc.lc_next = llinfo_llc.lc_prev = &llinfo_llc; | |
35cb309b | 114 | |
35cb309b KS |
115 | timeout(snpac_age, (caddr_t)0, hz); |
116 | timeout(esis_config, (caddr_t)0, hz); | |
117 | ||
85162407 KS |
118 | clnl_protox[ISO9542_ESIS].clnl_input = esis_input; |
119 | clnl_protox[ISO10589_ISIS].clnl_input = isis_input; | |
35cb309b KS |
120 | #ifdef ISO_X25ESIS |
121 | clnl_protox[ISO9542X25_ESIS].clnl_input = x25esis_input; | |
ee808ea1 | 122 | #endif /* ISO_X25ESIS */ |
35cb309b KS |
123 | } |
124 | ||
125 | /* | |
126 | * FUNCTION: esis_usrreq | |
127 | * | |
128 | * PURPOSE: Handle user level esis requests | |
129 | * | |
130 | * RETURNS: 0 or appropriate errno | |
131 | * | |
132 | * SIDE EFFECTS: | |
133 | * | |
35cb309b | 134 | */ |
a50e2bc0 | 135 | /*ARGSUSED*/ |
b7468604 | 136 | esis_usrreq(so, req, m, nam, control) |
35cb309b KS |
137 | struct socket *so; /* socket: used only to get to this code */ |
138 | int req; /* request */ | |
139 | struct mbuf *m; /* data for request */ | |
140 | struct mbuf *nam; /* optional name */ | |
b7468604 | 141 | struct mbuf *control; /* optional control */ |
35cb309b | 142 | { |
fc0b162f KS |
143 | struct rawcb *rp = sotorawcb(so); |
144 | int error = 0; | |
145 | ||
6929d5df | 146 | if ((so->so_state & SS_PRIV) == 0) { |
fc0b162f KS |
147 | error = EACCES; |
148 | goto release; | |
149 | } | |
150 | if (rp == NULL && req != PRU_ATTACH) { | |
151 | error = EINVAL; | |
152 | goto release; | |
153 | } | |
154 | ||
155 | switch (req) { | |
156 | case PRU_ATTACH: | |
157 | if (rp != NULL) { | |
158 | error = EINVAL; | |
159 | break; | |
160 | } | |
161 | MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK); | |
162 | if (so->so_pcb = (caddr_t)rp) { | |
163 | bzero(so->so_pcb, sizeof(*rp)); | |
164 | insque(rp, &esis_pcb); | |
16c005e8 | 165 | rp->rcb_socket = so; |
fc0b162f KS |
166 | error = soreserve(so, esis_sendspace, esis_recvspace); |
167 | } else | |
168 | error = ENOBUFS; | |
169 | break; | |
170 | ||
171 | case PRU_SEND: | |
172 | if (nam == NULL) { | |
173 | error = EINVAL; | |
174 | break; | |
175 | } | |
176 | /* error checking here */ | |
177 | error = isis_output(mtod(nam,struct sockaddr_dl *), m); | |
178 | m = NULL; | |
179 | break; | |
180 | ||
181 | case PRU_DETACH: | |
182 | raw_detach(rp); | |
183 | break; | |
184 | ||
185 | case PRU_SHUTDOWN: | |
186 | socantsendmore(so); | |
187 | break; | |
188 | ||
189 | case PRU_ABORT: | |
190 | soisdisconnected(so); | |
191 | raw_detach(rp); | |
192 | break; | |
193 | ||
194 | case PRU_SENSE: | |
195 | return (0); | |
196 | ||
197 | default: | |
198 | return (EOPNOTSUPP); | |
199 | } | |
200 | release: | |
35cb309b KS |
201 | if (m != NULL) |
202 | m_freem(m); | |
203 | ||
fc0b162f | 204 | return (error); |
35cb309b KS |
205 | } |
206 | ||
207 | /* | |
208 | * FUNCTION: esis_input | |
209 | * | |
210 | * PURPOSE: Process an incoming esis packet | |
211 | * | |
212 | * RETURNS: nothing | |
213 | * | |
214 | * SIDE EFFECTS: | |
215 | * | |
216 | * NOTES: | |
217 | */ | |
218 | esis_input(m0, shp) | |
219 | struct mbuf *m0; /* ptr to first mbuf of pkt */ | |
220 | struct snpa_hdr *shp; /* subnetwork header */ | |
221 | { | |
fc0b162f | 222 | register struct esis_fixed *pdu = mtod(m0, struct esis_fixed *); |
a50e2bc0 | 223 | register int type; |
35cb309b | 224 | |
35cb309b KS |
225 | /* |
226 | * check checksum if necessary | |
227 | */ | |
a50e2bc0 | 228 | if (ESIS_CKSUM_REQUIRED(pdu) && iso_check_csum(m0, (int)pdu->esis_hdr_len)) { |
35cb309b KS |
229 | esis_stat.es_badcsum++; |
230 | goto bad; | |
231 | } | |
232 | ||
233 | /* check version */ | |
234 | if (pdu->esis_vers != ESIS_VERSION) { | |
235 | esis_stat.es_badvers++; | |
236 | goto bad; | |
237 | } | |
a50e2bc0 KS |
238 | type = pdu->esis_type & 0x1f; |
239 | switch (type) { | |
35cb309b KS |
240 | case ESIS_ESH: |
241 | esis_eshinput(m0, shp); | |
fc0b162f | 242 | break; |
35cb309b KS |
243 | |
244 | case ESIS_ISH: | |
245 | esis_ishinput(m0, shp); | |
fc0b162f | 246 | break; |
35cb309b KS |
247 | |
248 | case ESIS_RD: | |
249 | esis_rdinput(m0, shp); | |
fc0b162f | 250 | break; |
35cb309b | 251 | |
fc0b162f | 252 | default: |
35cb309b | 253 | esis_stat.es_badtype++; |
35cb309b KS |
254 | } |
255 | ||
256 | bad: | |
fc0b162f KS |
257 | if (esis_pcb.rcb_next != &esis_pcb) |
258 | isis_input(m0, shp); | |
259 | else | |
260 | m_freem(m0); | |
35cb309b KS |
261 | } |
262 | ||
263 | /* | |
264 | * FUNCTION: esis_rdoutput | |
265 | * | |
266 | * PURPOSE: Transmit a redirect pdu | |
267 | * | |
268 | * RETURNS: nothing | |
269 | * | |
270 | * SIDE EFFECTS: | |
271 | * | |
272 | * NOTES: Assumes there is enough space for fixed part of header, | |
273 | * DA, BSNPA and NET in first mbuf. | |
274 | */ | |
c2bb180a | 275 | esis_rdoutput(inbound_shp, inbound_m, inbound_oidx, rd_dstnsap, rt) |
35cb309b KS |
276 | struct snpa_hdr *inbound_shp; /* snpa hdr from incoming packet */ |
277 | struct mbuf *inbound_m; /* incoming pkt itself */ | |
278 | struct clnp_optidx *inbound_oidx; /* clnp options assoc with incoming pkt */ | |
279 | struct iso_addr *rd_dstnsap; /* ultimate destination of pkt */ | |
c2bb180a | 280 | struct rtentry *rt; /* snpa cache info regarding next hop of |
35cb309b KS |
281 | pkt */ |
282 | { | |
283 | struct mbuf *m, *m0; | |
284 | caddr_t cp; | |
285 | struct esis_fixed *pdu; | |
286 | int len, total_len = 0; | |
287 | struct sockaddr_iso siso; | |
288 | struct ifnet *ifp = inbound_shp->snh_ifp; | |
c2bb180a KS |
289 | struct sockaddr_dl *sdl; |
290 | struct iso_addr *rd_gwnsap; | |
291 | ||
292 | if (rt->rt_flags & RTF_GATEWAY) { | |
293 | rd_gwnsap = &((struct sockaddr_iso *)rt->rt_gateway)->siso_addr; | |
294 | rt = rtalloc1(rt->rt_gateway, 0); | |
295 | } else | |
296 | rd_gwnsap = &((struct sockaddr_iso *)rt_key(rt))->siso_addr; | |
297 | if (rt == 0 || (sdl = (struct sockaddr_dl *)rt->rt_gateway) == 0 || | |
298 | sdl->sdl_family != AF_LINK) { | |
299 | /* maybe we should have a function that you | |
300 | could put in the iso_ifaddr structure | |
301 | which could translate iso_addrs into snpa's | |
302 | where there is a known mapping for that address type */ | |
303 | esis_stat.es_badtype++; | |
304 | return; | |
305 | } | |
35cb309b | 306 | esis_stat.es_rdsent++; |
35cb309b | 307 | IFDEBUG(D_ESISOUTPUT) |
35cb309b KS |
308 | printf("esis_rdoutput: ifp x%x (%s%d), ht %d, m x%x, oidx x%x\n", |
309 | ifp, ifp->if_name, ifp->if_unit, esis_holding_time, inbound_m, | |
310 | inbound_oidx); | |
311 | printf("\tdestination: %s\n", clnp_iso_addrp(rd_dstnsap)); | |
c2bb180a | 312 | printf("\tredirected toward:%s\n", clnp_iso_addrp(rd_gwnsap)); |
35cb309b KS |
313 | ENDDEBUG |
314 | ||
a50e2bc0 | 315 | if ((m0 = m = m_gethdr(M_DONTWAIT, MT_HEADER)) == NULL) { |
35cb309b KS |
316 | esis_stat.es_nomem++; |
317 | return; | |
318 | } | |
a50e2bc0 | 319 | bzero(mtod(m, caddr_t), MHLEN); |
35cb309b KS |
320 | |
321 | pdu = mtod(m, struct esis_fixed *); | |
a50e2bc0 | 322 | cp = (caddr_t)(pdu + 1); /*pointer arith.; 1st byte after header */ |
35cb309b KS |
323 | len = sizeof(struct esis_fixed); |
324 | ||
325 | /* | |
326 | * Build fixed part of header | |
327 | */ | |
328 | pdu->esis_proto_id = ISO9542_ESIS; | |
329 | pdu->esis_vers = ESIS_VERSION; | |
330 | pdu->esis_type = ESIS_RD; | |
331 | HTOC(pdu->esis_ht_msb, pdu->esis_ht_lsb, esis_holding_time); | |
332 | ||
333 | /* Insert destination address */ | |
d910a5d6 | 334 | (void) esis_insert_addr(&cp, &len, rd_dstnsap, m, 0); |
35cb309b KS |
335 | |
336 | /* Insert the snpa of better next hop */ | |
c2bb180a KS |
337 | *cp++ = sdl->sdl_alen; |
338 | bcopy(LLADDR(sdl), cp, sdl->sdl_alen); | |
339 | cp += sdl->sdl_alen; | |
340 | len += (sdl->sdl_alen + 1); | |
35cb309b KS |
341 | |
342 | /* | |
343 | * If the next hop is not the destination, then it ought to be | |
344 | * an IS and it should be inserted next. Else, set the | |
345 | * NETL to 0 | |
346 | */ | |
347 | /* PHASE2 use mask from ifp of outgoing interface */ | |
c2bb180a KS |
348 | if (!iso_addrmatch1(rd_dstnsap, rd_gwnsap)) { |
349 | /* this should not happen: | |
35cb309b | 350 | if ((nhop_sc->sc_flags & SNPA_IS) == 0) { |
35cb309b KS |
351 | printf("esis_rdoutput: next hop is not dst and not an IS\n"); |
352 | m_freem(m0); | |
353 | return; | |
c2bb180a KS |
354 | } */ |
355 | (void) esis_insert_addr(&cp, &len, rd_gwnsap, m, 0); | |
35cb309b KS |
356 | } else { |
357 | *cp++ = 0; /* NETL */ | |
358 | len++; | |
359 | } | |
a50e2bc0 | 360 | m->m_len = len; |
35cb309b KS |
361 | |
362 | /* | |
363 | * PHASE2 | |
364 | * If redirect is to an IS, add an address mask. The mask to be | |
365 | * used should be the mask present in the routing entry used to | |
366 | * forward the original data packet. | |
367 | */ | |
368 | ||
369 | /* | |
370 | * Copy Qos, priority, or security options present in original npdu | |
371 | */ | |
372 | if (inbound_oidx) { | |
c2bb180a | 373 | /* THIS CODE IS CURRENTLY (mostly) UNTESTED */ |
35cb309b KS |
374 | int optlen = 0; |
375 | if (inbound_oidx->cni_qos_formatp) | |
376 | optlen += (inbound_oidx->cni_qos_len + 2); | |
377 | if (inbound_oidx->cni_priorp) /* priority option is 1 byte long */ | |
378 | optlen += 3; | |
379 | if (inbound_oidx->cni_securep) | |
380 | optlen += (inbound_oidx->cni_secure_len + 2); | |
a50e2bc0 KS |
381 | if (M_TRAILINGSPACE(m) < optlen) { |
382 | EXTEND_PACKET(m, m0, cp); | |
383 | m->m_len = 0; | |
35cb309b KS |
384 | /* assumes MLEN > optlen */ |
385 | } | |
386 | /* assume MLEN-len > optlen */ | |
387 | /* | |
388 | * When copying options, copy from ptr - 2 in order to grab | |
389 | * the option code and length | |
390 | */ | |
391 | if (inbound_oidx->cni_qos_formatp) { | |
c2bb180a KS |
392 | bcopy(mtod(inbound_m, caddr_t) + inbound_oidx->cni_qos_formatp - 2, |
393 | cp, (unsigned)(inbound_oidx->cni_qos_len + 2)); | |
394 | cp += inbound_oidx->cni_qos_len + 2; | |
35cb309b KS |
395 | } |
396 | if (inbound_oidx->cni_priorp) { | |
c2bb180a KS |
397 | bcopy(mtod(inbound_m, caddr_t) + inbound_oidx->cni_priorp - 2, |
398 | cp, 3); | |
399 | cp += 3; | |
35cb309b KS |
400 | } |
401 | if (inbound_oidx->cni_securep) { | |
c2bb180a | 402 | bcopy(mtod(inbound_m, caddr_t) + inbound_oidx->cni_securep - 2, cp, |
a50e2bc0 | 403 | (unsigned)(inbound_oidx->cni_secure_len + 2)); |
c2bb180a | 404 | cp += inbound_oidx->cni_secure_len + 2; |
35cb309b | 405 | } |
a50e2bc0 | 406 | m->m_len += optlen; |
c2bb180a | 407 | len += optlen; |
35cb309b KS |
408 | } |
409 | ||
a50e2bc0 | 410 | pdu->esis_hdr_len = m0->m_pkthdr.len = len; |
35cb309b KS |
411 | iso_gen_csum(m0, ESIS_CKSUM_OFF, (int)pdu->esis_hdr_len); |
412 | ||
a50e2bc0 | 413 | bzero((caddr_t)&siso, sizeof(siso)); |
35cb309b | 414 | siso.siso_family = AF_ISO; |
a50e2bc0 KS |
415 | siso.siso_data[0] = AFI_SNA; |
416 | siso.siso_nlen = 6 + 1; /* should be taken from snpa_hdr */ | |
35cb309b | 417 | /* +1 is for AFI */ |
a50e2bc0 | 418 | bcopy(inbound_shp->snh_shost, siso.siso_data + 1, 6); |
02863b0e | 419 | (ifp->if_output)(ifp, m0, (struct sockaddr *)&siso, 0); |
35cb309b KS |
420 | } |
421 | ||
35cb309b KS |
422 | /* |
423 | * FUNCTION: esis_insert_addr | |
424 | * | |
425 | * PURPOSE: Insert an iso_addr into a buffer | |
426 | * | |
427 | * RETURNS: true if buffer was big enough, else false | |
428 | * | |
429 | * SIDE EFFECTS: Increment buf & len according to size of iso_addr | |
430 | * | |
431 | * NOTES: Plus 1 here is for length byte | |
432 | */ | |
d910a5d6 | 433 | esis_insert_addr(buf, len, isoa, m, nsellen) |
c2bb180a KS |
434 | register caddr_t *buf; /* ptr to buffer to put address into */ |
435 | int *len; /* ptr to length of buffer so far */ | |
436 | register struct iso_addr *isoa; /* ptr to address */ | |
437 | register struct mbuf *m; /* determine if there remains space */ | |
438 | int nsellen; | |
35cb309b | 439 | { |
c2bb180a KS |
440 | register int newlen, result = 0; |
441 | ||
442 | isoa->isoa_len -= nsellen; | |
443 | newlen = isoa->isoa_len + 1; | |
444 | if (newlen <= M_TRAILINGSPACE(m)) { | |
445 | bcopy((caddr_t)isoa, *buf, newlen); | |
446 | *len += newlen; | |
447 | *buf += newlen; | |
448 | m->m_len += newlen; | |
449 | result = 1; | |
450 | } | |
451 | isoa->isoa_len += nsellen; | |
452 | return (result); | |
35cb309b KS |
453 | } |
454 | ||
af8f5eff KS |
455 | #define ESIS_EXTRACT_ADDR(d, b) { d = (struct iso_addr *)(b); b += (1 + *b); \ |
456 | if (b > buflim) {esis_stat.es_toosmall++; goto bad;}} | |
457 | #define ESIS_NEXT_OPTION(b) { b += (2 + b[1]); \ | |
458 | if (b > buflim) {esis_stat.es_toosmall++; goto bad;}} | |
087ffc43 | 459 | int ESHonly = 0; |
35cb309b KS |
460 | /* |
461 | ||
462 | /* | |
463 | * FUNCTION: esis_eshinput | |
464 | * | |
465 | * PURPOSE: Process an incoming ESH pdu | |
466 | * | |
467 | * RETURNS: nothing | |
468 | * | |
469 | * SIDE EFFECTS: | |
470 | * | |
471 | * NOTES: | |
472 | */ | |
473 | esis_eshinput(m, shp) | |
474 | struct mbuf *m; /* esh pdu */ | |
475 | struct snpa_hdr *shp; /* subnetwork header */ | |
476 | { | |
d910a5d6 | 477 | struct esis_fixed *pdu = mtod(m, struct esis_fixed *); |
35cb309b | 478 | u_short ht; /* holding time */ |
d910a5d6 | 479 | struct iso_addr *nsap; |
af8f5eff | 480 | int naddr; |
a50e2bc0 | 481 | u_char *buf = (u_char *)(pdu + 1); |
af8f5eff | 482 | u_char *buflim = pdu->esis_hdr_len + (u_char *)pdu; |
c2bb180a | 483 | int new_entry = 0; |
35cb309b KS |
484 | |
485 | esis_stat.es_eshrcvd++; | |
486 | ||
487 | CTOH(pdu->esis_ht_msb, pdu->esis_ht_lsb, ht); | |
488 | ||
af8f5eff KS |
489 | naddr = *buf++; |
490 | if (buf >= buflim) | |
35cb309b | 491 | goto bad; |
c2bb180a | 492 | if (naddr == 1) { |
af8f5eff | 493 | ESIS_EXTRACT_ADDR(nsap, buf); |
c2bb180a KS |
494 | new_entry = snpac_add(shp->snh_ifp, |
495 | nsap, shp->snh_shost, SNPA_ES, ht, 0); | |
496 | } else { | |
497 | int nsellength = 0, nlen = 0; | |
498 | { | |
499 | /* See if we want to compress out multiple nsaps differing | |
500 | only by nsel */ | |
501 | register struct ifaddr *ifa = shp->snh_ifp->if_addrlist; | |
502 | for (; ifa; ifa = ifa->ifa_next) | |
503 | if (ifa->ifa_addr->sa_family == AF_ISO) { | |
504 | nsellength = ((struct iso_ifaddr *)ifa)->ia_addr.siso_tlen; | |
505 | break; | |
506 | } | |
507 | } | |
af8f5eff | 508 | IFDEBUG(D_ESISINPUT) |
c2bb180a KS |
509 | printf("esis_eshinput: esh: ht %d, naddr %d nsellength %d\n", |
510 | ht, naddr, nsellength); | |
af8f5eff | 511 | ENDDEBUG |
c2bb180a KS |
512 | while (naddr-- > 0) { |
513 | struct iso_addr *nsap2; u_char *buf2; | |
514 | ESIS_EXTRACT_ADDR(nsap, buf); | |
515 | /* see if there is at least one more nsap in ESH differing | |
516 | only by nsel */ | |
517 | if (nsellength != 0) for (buf2 = buf; buf2 < buflim;) { | |
518 | ESIS_EXTRACT_ADDR(nsap2, buf2); | |
519 | IFDEBUG(D_ESISINPUT) | |
520 | printf("esis_eshinput: comparing %s ", | |
521 | clnp_iso_addrp(nsap)); | |
522 | printf("and %s\n", clnp_iso_addrp(nsap2)); | |
523 | ENDDEBUG | |
524 | if (Bcmp(nsap->isoa_genaddr, nsap2->isoa_genaddr, | |
525 | nsap->isoa_len - nsellength) == 0) { | |
526 | nlen = nsellength; | |
527 | break; | |
528 | } | |
529 | } | |
530 | new_entry |= snpac_add(shp->snh_ifp, | |
531 | nsap, shp->snh_shost, SNPA_ES, ht, nlen); | |
532 | nlen = 0; | |
533 | } | |
35cb309b | 534 | } |
c2bb180a KS |
535 | IFDEBUG(D_ESISINPUT) |
536 | printf("esis_eshinput: nsap %s is %s\n", | |
537 | clnp_iso_addrp(nsap), new_entry ? "new" : "old"); | |
538 | ENDDEBUG | |
539 | if (new_entry && (iso_systype & SNPA_IS)) | |
540 | esis_shoutput(shp->snh_ifp, ESIS_ISH, esis_holding_time, | |
541 | shp->snh_shost, 6, (struct iso_addr *)0); | |
af8f5eff | 542 | bad: |
af8f5eff | 543 | return; |
35cb309b KS |
544 | } |
545 | ||
546 | /* | |
547 | * FUNCTION: esis_ishinput | |
548 | * | |
549 | * PURPOSE: process an incoming ISH pdu | |
550 | * | |
551 | * RETURNS: | |
552 | * | |
553 | * SIDE EFFECTS: | |
554 | * | |
555 | * NOTES: | |
556 | */ | |
557 | esis_ishinput(m, shp) | |
558 | struct mbuf *m; /* esh pdu */ | |
559 | struct snpa_hdr *shp; /* subnetwork header */ | |
560 | { | |
561 | struct esis_fixed *pdu = mtod(m, struct esis_fixed *); | |
087ffc43 | 562 | u_short ht, newct; /* holding time */ |
af8f5eff KS |
563 | struct iso_addr *nsap; /* Network Entity Title */ |
564 | register u_char *buf = (u_char *) (pdu + 1); | |
565 | register u_char *buflim = pdu->esis_hdr_len + (u_char *)pdu; | |
566 | int new_entry; | |
35cb309b KS |
567 | |
568 | esis_stat.es_ishrcvd++; | |
569 | CTOH(pdu->esis_ht_msb, pdu->esis_ht_lsb, ht); | |
570 | ||
571 | IFDEBUG(D_ESISINPUT) | |
572 | printf("esis_ishinput: ish: ht %d\n", ht); | |
573 | ENDDEBUG | |
af8f5eff | 574 | if (ESHonly) |
a50e2bc0 | 575 | goto bad; |
a50e2bc0 | 576 | |
af8f5eff KS |
577 | ESIS_EXTRACT_ADDR(nsap, buf); |
578 | ||
579 | while (buf < buflim) { | |
580 | switch (*buf) { | |
a50e2bc0 | 581 | case ESISOVAL_ESCT: |
16c005e8 KS |
582 | if (iso_systype & SNPA_IS) |
583 | break; | |
af8f5eff | 584 | if (buf[1] != 2) |
a50e2bc0 | 585 | goto bad; |
087ffc43 KS |
586 | CTOH(buf[2], buf[3], newct); |
587 | if (esis_config_time != newct) { | |
588 | untimeout(esis_config,0); | |
589 | esis_config_time = newct; | |
590 | esis_config(); | |
591 | } | |
af8f5eff KS |
592 | break; |
593 | ||
594 | default: | |
595 | printf("Unknown ISH option: %x\n", *buf); | |
a50e2bc0 | 596 | } |
af8f5eff | 597 | ESIS_NEXT_OPTION(buf); |
a50e2bc0 | 598 | } |
c2bb180a | 599 | new_entry = snpac_add(shp->snh_ifp, nsap, shp->snh_shost, SNPA_IS, ht, 0); |
a50e2bc0 KS |
600 | IFDEBUG(D_ESISINPUT) |
601 | printf("esis_ishinput: nsap %s is %s\n", | |
602 | clnp_iso_addrp(nsap), new_entry ? "new" : "old"); | |
603 | ENDDEBUG | |
35cb309b | 604 | |
a50e2bc0 KS |
605 | if (new_entry) |
606 | esis_shoutput(shp->snh_ifp, | |
607 | iso_systype & SNPA_ES ? ESIS_ESH : ESIS_ISH, | |
c2bb180a | 608 | esis_holding_time, shp->snh_shost, 6, (struct iso_addr *)0); |
af8f5eff | 609 | bad: |
af8f5eff | 610 | return; |
35cb309b KS |
611 | } |
612 | ||
613 | /* | |
614 | * FUNCTION: esis_rdinput | |
615 | * | |
616 | * PURPOSE: Process an incoming RD pdu | |
617 | * | |
618 | * RETURNS: | |
619 | * | |
620 | * SIDE EFFECTS: | |
621 | * | |
622 | * NOTES: | |
623 | */ | |
624 | esis_rdinput(m0, shp) | |
625 | struct mbuf *m0; /* esh pdu */ | |
626 | struct snpa_hdr *shp; /* subnetwork header */ | |
627 | { | |
628 | struct esis_fixed *pdu = mtod(m0, struct esis_fixed *); | |
629 | u_short ht; /* holding time */ | |
af8f5eff KS |
630 | struct iso_addr *da, *net = 0, *netmask = 0, *snpamask = 0; |
631 | register struct iso_addr *bsnpa; | |
632 | register u_char *buf = (u_char *)(pdu + 1); | |
633 | register u_char *buflim = pdu->esis_hdr_len + (u_char *)pdu; | |
35cb309b KS |
634 | |
635 | esis_stat.es_rdrcvd++; | |
636 | ||
637 | /* intermediate systems ignore redirects */ | |
638 | if (iso_systype & SNPA_IS) | |
fc0b162f | 639 | return; |
af8f5eff | 640 | if (ESHonly) |
fc0b162f | 641 | return; |
35cb309b KS |
642 | |
643 | CTOH(pdu->esis_ht_msb, pdu->esis_ht_lsb, ht); | |
af8f5eff | 644 | if (buf >= buflim) |
fc0b162f | 645 | return; |
35cb309b KS |
646 | |
647 | /* Extract DA */ | |
af8f5eff | 648 | ESIS_EXTRACT_ADDR(da, buf); |
a50e2bc0 | 649 | |
35cb309b | 650 | /* Extract better snpa */ |
af8f5eff KS |
651 | ESIS_EXTRACT_ADDR(bsnpa, buf); |
652 | ||
35cb309b | 653 | /* Extract NET if present */ |
af8f5eff | 654 | if (buf < buflim) { |
c2bb180a KS |
655 | if (*buf == 0) |
656 | buf++; /* no NET present, skip NETL anyway */ | |
657 | else | |
658 | ESIS_EXTRACT_ADDR(net, buf); | |
a50e2bc0 KS |
659 | } |
660 | ||
661 | /* process options */ | |
af8f5eff KS |
662 | while (buf < buflim) { |
663 | switch (*buf) { | |
a50e2bc0 KS |
664 | case ESISOVAL_SNPAMASK: |
665 | if (snpamask) /* duplicate */ | |
fc0b162f | 666 | return; |
af8f5eff | 667 | snpamask = (struct iso_addr *)(buf + 1); |
a50e2bc0 KS |
668 | break; |
669 | ||
670 | case ESISOVAL_NETMASK: | |
671 | if (netmask) /* duplicate */ | |
fc0b162f | 672 | return; |
af8f5eff KS |
673 | netmask = (struct iso_addr *)(buf + 1); |
674 | break; | |
675 | ||
676 | default: | |
677 | printf("Unknown option in ESIS RD (0x%x)\n", buf[-1]); | |
35cb309b | 678 | } |
af8f5eff | 679 | ESIS_NEXT_OPTION(buf); |
35cb309b KS |
680 | } |
681 | ||
682 | IFDEBUG(D_ESISINPUT) | |
a50e2bc0 KS |
683 | printf("esis_rdinput: rd: ht %d, da %s\n", ht, clnp_iso_addrp(da)); |
684 | if (net) | |
685 | printf("\t: net %s\n", clnp_iso_addrp(net)); | |
35cb309b | 686 | ENDDEBUG |
35cb309b KS |
687 | /* |
688 | * If netl is zero, then redirect is to an ES. We need to add an entry | |
689 | * to the snpa cache for (destination, better snpa). | |
690 | * If netl is not zero, then the redirect is to an IS. In this | |
691 | * case, add an snpa cache entry for (net, better snpa). | |
692 | * | |
693 | * If the redirect is to an IS, add a route entry towards that | |
694 | * IS. | |
695 | */ | |
af8f5eff | 696 | if (net == 0 || net->isoa_len == 0 || snpamask) { |
35cb309b | 697 | /* redirect to an ES */ |
af8f5eff | 698 | snpac_add(shp->snh_ifp, da, |
c2bb180a | 699 | bsnpa->isoa_genaddr, SNPA_ES, ht, 0); |
35cb309b | 700 | } else { |
af8f5eff | 701 | snpac_add(shp->snh_ifp, net, |
c2bb180a | 702 | bsnpa->isoa_genaddr, SNPA_IS, ht, 0); |
af8f5eff | 703 | snpac_addrt(shp->snh_ifp, da, net, netmask); |
35cb309b | 704 | } |
fc0b162f | 705 | bad: ; /* Needed by ESIS_NEXT_OPTION */ |
35cb309b KS |
706 | } |
707 | ||
708 | /* | |
709 | * FUNCTION: esis_config | |
710 | * | |
711 | * PURPOSE: Report configuration | |
712 | * | |
713 | * RETURNS: | |
714 | * | |
715 | * SIDE EFFECTS: | |
716 | * | |
717 | * NOTES: Called every esis_config_time seconds | |
718 | */ | |
7c47dd7f | 719 | void |
35cb309b KS |
720 | esis_config() |
721 | { | |
722 | register struct ifnet *ifp; | |
723 | ||
724 | timeout(esis_config, (caddr_t)0, hz * esis_config_time); | |
725 | ||
726 | /* | |
727 | * Report configuration for each interface that | |
728 | * - is UP | |
7259bccd | 729 | * - has BROADCAST capability |
35cb309b KS |
730 | * - has an ISO address |
731 | */ | |
7259bccd KS |
732 | /* Todo: a better way would be to construct the esh or ish |
733 | * once and copy it out for all devices, possibly calling | |
734 | * a method in the iso_ifaddr structure to encapsulate and | |
735 | * transmit it. This could work to advantage for non-broadcast media | |
736 | */ | |
35cb309b KS |
737 | |
738 | for (ifp = ifnet; ifp; ifp = ifp->if_next) { | |
739 | if ((ifp->if_flags & IFF_UP) && | |
7259bccd | 740 | (ifp->if_flags & IFF_BROADCAST)) { |
35cb309b KS |
741 | /* search for an ISO address family */ |
742 | struct ifaddr *ia; | |
743 | ||
744 | for (ia = ifp->if_addrlist; ia; ia = ia->ifa_next) { | |
a50e2bc0 | 745 | if (ia->ifa_addr->sa_family == AF_ISO) { |
35cb309b KS |
746 | esis_shoutput(ifp, |
747 | iso_systype & SNPA_ES ? ESIS_ESH : ESIS_ISH, | |
748 | esis_holding_time, | |
c2bb180a KS |
749 | (caddr_t)(iso_systype & SNPA_ES ? all_is_snpa : |
750 | all_es_snpa), 6, (struct iso_addr *)0); | |
35cb309b KS |
751 | break; |
752 | } | |
753 | } | |
754 | } | |
755 | } | |
756 | } | |
757 | ||
758 | /* | |
759 | * FUNCTION: esis_shoutput | |
760 | * | |
761 | * PURPOSE: Transmit an esh or ish pdu | |
762 | * | |
763 | * RETURNS: nothing | |
764 | * | |
765 | * SIDE EFFECTS: | |
766 | * | |
767 | * NOTES: | |
768 | */ | |
c2bb180a | 769 | esis_shoutput(ifp, type, ht, sn_addr, sn_len, isoa) |
35cb309b KS |
770 | struct ifnet *ifp; |
771 | int type; | |
772 | short ht; | |
773 | caddr_t sn_addr; | |
774 | int sn_len; | |
c2bb180a | 775 | struct iso_addr *isoa; |
35cb309b KS |
776 | { |
777 | struct mbuf *m, *m0; | |
778 | caddr_t cp, naddrp; | |
779 | int naddr = 0; | |
780 | struct esis_fixed *pdu; | |
c2bb180a | 781 | struct iso_ifaddr *ia; |
a50e2bc0 | 782 | int len; |
35cb309b KS |
783 | struct sockaddr_iso siso; |
784 | ||
785 | if (type == ESIS_ESH) | |
786 | esis_stat.es_eshsent++; | |
787 | else if (type == ESIS_ISH) | |
788 | esis_stat.es_ishsent++; | |
789 | else { | |
790 | printf("esis_shoutput: bad pdu type\n"); | |
791 | return; | |
792 | } | |
793 | ||
794 | IFDEBUG(D_ESISOUTPUT) | |
795 | int i; | |
796 | printf("esis_shoutput: ifp x%x (%s%d), %s, ht %d, to: [%d] ", | |
797 | ifp, ifp->if_name, ifp->if_unit, type == ESIS_ESH ? "esh" : "ish", | |
798 | ht, sn_len); | |
799 | for (i=0; i<sn_len; i++) | |
800 | printf("%x%c", *(sn_addr+i), i < (sn_len-1) ? ':' : ' '); | |
801 | printf("\n"); | |
802 | ENDDEBUG | |
803 | ||
a50e2bc0 | 804 | if ((m0 = m = m_gethdr(M_DONTWAIT, MT_HEADER)) == NULL) { |
35cb309b KS |
805 | esis_stat.es_nomem++; |
806 | return; | |
807 | } | |
a50e2bc0 | 808 | bzero(mtod(m, caddr_t), MHLEN); |
35cb309b KS |
809 | |
810 | pdu = mtod(m, struct esis_fixed *); | |
a50e2bc0 | 811 | naddrp = cp = (caddr_t)(pdu + 1); |
35cb309b KS |
812 | len = sizeof(struct esis_fixed); |
813 | ||
814 | /* | |
815 | * Build fixed part of header | |
816 | */ | |
817 | pdu->esis_proto_id = ISO9542_ESIS; | |
818 | pdu->esis_vers = ESIS_VERSION; | |
819 | pdu->esis_type = type; | |
820 | HTOC(pdu->esis_ht_msb, pdu->esis_ht_lsb, ht); | |
821 | ||
822 | if (type == ESIS_ESH) { | |
823 | cp++; | |
824 | len++; | |
825 | } | |
826 | ||
a50e2bc0 | 827 | m->m_len = len; |
c2bb180a KS |
828 | if (isoa) { |
829 | /* | |
830 | * Here we are responding to a clnp packet sent to an NSAP | |
831 | * that is ours which was sent to the MAC addr all_es's. | |
832 | * It is possible that we did not specifically advertise this | |
833 | * NSAP, even though it is ours, so we will respond | |
834 | * directly to the sender that we are here. If we do have | |
835 | * multiple NSEL's we'll tack them on so he can compress them out. | |
836 | */ | |
837 | (void) esis_insert_addr(&cp, &len, isoa, m, 0); | |
838 | naddr = 1; | |
839 | } | |
840 | for (ia = iso_ifaddr; ia; ia = ia->ia_next) { | |
841 | int nsellen = (type == ESIS_ISH ? ia->ia_addr.siso_tlen : 0); | |
842 | int n = ia->ia_addr.siso_nlen; | |
843 | register struct iso_ifaddr *ia2; | |
844 | ||
845 | if (type == ESIS_ISH && naddr > 0) | |
846 | break; | |
847 | for (ia2 = iso_ifaddr; ia2 != ia; ia2 = ia2->ia_next) | |
848 | if (Bcmp(ia->ia_addr.siso_data, ia2->ia_addr.siso_data, n) == 0) | |
849 | break; | |
850 | if (ia2 != ia) | |
851 | continue; /* Means we have previously copied this nsap */ | |
852 | if (isoa && Bcmp(ia->ia_addr.siso_data, isoa->isoa_genaddr, n) == 0) { | |
853 | isoa = 0; | |
854 | continue; /* Ditto */ | |
855 | } | |
856 | IFDEBUG(D_ESISOUTPUT) | |
857 | printf("esis_shoutput: adding NSAP %s\n", | |
858 | clnp_iso_addrp(&ia->ia_addr.siso_addr)); | |
859 | ENDDEBUG | |
860 | if (!esis_insert_addr(&cp, &len, | |
861 | &ia->ia_addr.siso_addr, m, nsellen)) { | |
862 | EXTEND_PACKET(m, m0, cp); | |
863 | (void) esis_insert_addr(&cp, &len, &ia->ia_addr.siso_addr, m, | |
864 | nsellen); | |
35cb309b | 865 | } |
c2bb180a | 866 | naddr++; |
35cb309b KS |
867 | } |
868 | ||
869 | if (type == ESIS_ESH) | |
870 | *naddrp = naddr; | |
f98ce9c5 KS |
871 | else { |
872 | /* add suggested es config timer option to ISH */ | |
873 | if (M_TRAILINGSPACE(m) < 4) { | |
874 | printf("esis_shoutput: extending packet\n"); | |
875 | EXTEND_PACKET(m, m0, cp); | |
876 | } | |
877 | *cp++ = ESISOVAL_ESCT; | |
878 | *cp++ = 2; | |
879 | HTOC(*cp, *(cp+1), esis_esconfig_time); | |
880 | len += 4; | |
881 | m->m_len += 4; | |
882 | IFDEBUG(D_ESISOUTPUT) | |
883 | printf("m0 0x%x, m 0x%x, data 0x%x, len %d, cp 0x%x\n", | |
884 | m0, m, m->m_data, m->m_len, cp); | |
885 | ENDDEBUG | |
886 | } | |
35cb309b | 887 | |
a50e2bc0 KS |
888 | m0->m_pkthdr.len = len; |
889 | pdu->esis_hdr_len = len; | |
35cb309b KS |
890 | iso_gen_csum(m0, ESIS_CKSUM_OFF, (int)pdu->esis_hdr_len); |
891 | ||
a50e2bc0 | 892 | bzero((caddr_t)&siso, sizeof(siso)); |
35cb309b | 893 | siso.siso_family = AF_ISO; |
a50e2bc0 KS |
894 | siso.siso_data[0] = AFI_SNA; |
895 | siso.siso_nlen = sn_len + 1; | |
a50e2bc0 | 896 | bcopy(sn_addr, siso.siso_data + 1, (unsigned)sn_len); |
02863b0e | 897 | (ifp->if_output)(ifp, m0, (struct sockaddr *)&siso, 0); |
35cb309b KS |
898 | } |
899 | ||
fc0b162f KS |
900 | /* |
901 | * FUNCTION: isis_input | |
902 | * | |
903 | * PURPOSE: Process an incoming isis packet | |
904 | * | |
905 | * RETURNS: nothing | |
906 | * | |
907 | * SIDE EFFECTS: | |
908 | * | |
909 | * NOTES: | |
910 | */ | |
911 | isis_input(m0, shp) | |
912 | struct mbuf *m0; /* ptr to first mbuf of pkt */ | |
913 | struct snpa_hdr *shp; /* subnetwork header */ | |
914 | { | |
915 | register int type; | |
f5e7ebba | 916 | register struct rawcb *rp, *first_rp = 0; |
fc0b162f | 917 | struct ifnet *ifp = shp->snh_ifp; |
fc0b162f KS |
918 | char workbuf[16]; |
919 | struct mbuf *mm; | |
920 | ||
921 | IFDEBUG(D_ISISINPUT) | |
922 | int i; | |
923 | ||
924 | printf("isis_input: pkt on ifp x%x (%s%d): from:", ifp, | |
925 | ifp->if_name, ifp->if_unit); | |
926 | for (i=0; i<6; i++) | |
927 | printf("%x%c", shp->snh_shost[i]&0xff, (i<5) ? ':' : ' '); | |
928 | printf(" to:"); | |
929 | for (i=0; i<6; i++) | |
930 | printf("%x%c", shp->snh_dhost[i]&0xff, (i<5) ? ':' : ' '); | |
931 | printf("\n"); | |
932 | ENDDEBUG | |
933 | esis_dl.sdl_alen = ifp->if_addrlen; | |
934 | esis_dl.sdl_index = ifp->if_index; | |
935 | bcopy(shp->snh_shost, (caddr_t)esis_dl.sdl_data, esis_dl.sdl_alen); | |
936 | for (rp = esis_pcb.rcb_next; rp != &esis_pcb; rp = rp->rcb_next) { | |
f5e7ebba KS |
937 | if (first_rp == 0) { |
938 | first_rp = rp; | |
fc0b162f KS |
939 | continue; |
940 | } | |
941 | if (mm = m_copy(m0, 0, M_COPYALL)) { /*can't block at interrupt level */ | |
942 | if (sbappendaddr(&rp->rcb_socket->so_rcv, | |
a57b86d5 | 943 | &esis_dl, mm, (struct mbuf *)0) != 0) { |
fc0b162f | 944 | sorwakeup(rp->rcb_socket); |
a57b86d5 | 945 | } else { |
fc0b162f KS |
946 | IFDEBUG(D_ISISINPUT) |
947 | printf("Error in sbappenaddr, mm = 0x%x\n", mm); | |
948 | ENDDEBUG | |
949 | m_freem(mm); | |
950 | } | |
951 | } | |
952 | } | |
f5e7ebba | 953 | if (first_rp && sbappendaddr(&first_rp->rcb_socket->so_rcv, |
16c005e8 | 954 | &esis_dl, m0, (struct mbuf *)0) != 0) { |
f5e7ebba KS |
955 | sorwakeup(first_rp->rcb_socket); |
956 | return; | |
fc0b162f | 957 | } |
f5e7ebba | 958 | m_freem(m0); |
fc0b162f KS |
959 | } |
960 | ||
961 | isis_output(sdl, m) | |
962 | register struct sockaddr_dl *sdl; | |
963 | struct mbuf *m; | |
964 | { | |
965 | register struct ifnet *ifp; | |
966 | struct ifaddr *ifa, *ifa_ifwithnet(); | |
967 | struct sockaddr_iso siso; | |
968 | int error = 0; | |
969 | unsigned sn_len; | |
970 | ||
02863b0e | 971 | ifa = ifa_ifwithnet((struct sockaddr *)sdl); /* get ifp from sdl */ |
fc0b162f KS |
972 | if (ifa == 0) { |
973 | IFDEBUG(D_ISISOUTPUT) | |
974 | printf("isis_output: interface not found\n"); | |
975 | ENDDEBUG | |
976 | error = EINVAL; | |
977 | goto release; | |
978 | } | |
979 | ifp = ifa->ifa_ifp; | |
0b8bdcc2 | 980 | sn_len = sdl->sdl_alen; |
fc0b162f KS |
981 | IFDEBUG(D_ISISOUTPUT) |
982 | u_char *cp = (u_char *)LLADDR(sdl), *cplim = cp + sn_len; | |
983 | printf("isis_output: ifp 0x%x (%s%d), to: ", | |
984 | ifp, ifp->if_name, ifp->if_unit); | |
985 | while (cp < cplim) { | |
986 | printf("%x", *cp++); | |
987 | printf("%c", (cp < cplim) ? ':' : ' '); | |
988 | } | |
989 | printf("\n"); | |
990 | ENDDEBUG | |
991 | bzero((caddr_t)&siso, sizeof(siso)); | |
992 | siso.siso_family = AF_ISO; /* This convention may be useful for X.25 */ | |
993 | siso.siso_data[0] = AFI_SNA; | |
994 | siso.siso_nlen = sn_len + 1; | |
995 | bcopy(LLADDR(sdl), siso.siso_data + 1, sn_len); | |
996 | error = (ifp->if_output)(ifp, m, (struct sockaddr *)&siso, 0); | |
997 | if (error) { | |
998 | IFDEBUG(D_ISISOUTPUT) | |
999 | printf("isis_output: error from ether_output is %d\n", error); | |
1000 | ENDDEBUG | |
1001 | } | |
1002 | return (error); | |
1003 | ||
1004 | release: | |
1005 | if (m != NULL) | |
1006 | m_freem(m); | |
1007 | return(error); | |
1008 | } | |
1009 | ||
1010 | ||
35cb309b KS |
1011 | /* |
1012 | * FUNCTION: esis_ctlinput | |
1013 | * | |
1014 | * PURPOSE: Handle the PRC_IFDOWN transition | |
1015 | * | |
1016 | * RETURNS: nothing | |
1017 | * | |
1018 | * SIDE EFFECTS: | |
1019 | * | |
1020 | * NOTES: Calls snpac_flush for interface specified. | |
1021 | * The loop through iso_ifaddr is stupid because | |
1022 | * back in if_down, we knew the ifp... | |
1023 | */ | |
1024 | esis_ctlinput(req, siso) | |
1025 | int req; /* request: we handle only PRC_IFDOWN */ | |
1026 | struct sockaddr_iso *siso; /* address of ifp */ | |
1027 | { | |
1028 | register struct iso_ifaddr *ia; /* scan through interface addresses */ | |
1029 | ||
a50e2bc0 KS |
1030 | if (req == PRC_IFDOWN) |
1031 | for (ia = iso_ifaddr; ia; ia = ia->ia_next) { | |
1032 | if (iso_addrmatch(IA_SIS(ia), siso)) | |
1033 | snpac_flushifp(ia->ia_ifp); | |
1034 | } | |
35cb309b KS |
1035 | } |
1036 | ||
ee808ea1 | 1037 | #endif /* ISO */ |