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1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.redist.c% | |
6 | * | |
02863b0e | 7 | * @(#)esis.c 7.21 (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 | ||
a50e2bc0 KS |
39 | #include "types.h" |
40 | #include "param.h" | |
45a574af | 41 | #include "systm.h" |
a50e2bc0 KS |
42 | #include "mbuf.h" |
43 | #include "domain.h" | |
44 | #include "protosw.h" | |
a50e2bc0 KS |
45 | #include "socket.h" |
46 | #include "socketvar.h" | |
47 | #include "errno.h" | |
35cb309b KS |
48 | |
49 | #include "../net/if.h" | |
c2bb180a | 50 | #include "../net/if_dl.h" |
35cb309b | 51 | #include "../net/route.h" |
fc0b162f | 52 | #include "../net/raw_cb.h" |
35cb309b | 53 | |
a50e2bc0 KS |
54 | #include "iso.h" |
55 | #include "iso_pcb.h" | |
56 | #include "iso_var.h" | |
57 | #include "iso_snpac.h" | |
58 | #include "clnl.h" | |
59 | #include "clnp.h" | |
60 | #include "clnp_stat.h" | |
a50e2bc0 | 61 | #include "esis.h" |
44f52ea5 | 62 | #include "argo_debug.h" |
6929d5df | 63 | #include "kernel.h" |
35cb309b KS |
64 | |
65 | /* | |
66 | * Global variables to esis implementation | |
67 | * | |
68 | * esis_holding_time - the holding time (sec) parameter for outgoing pdus | |
69 | * esis_config_time - the frequency (sec) that hellos are generated | |
fc0b162f KS |
70 | * esis_esconfig_time - suggested es configuration time placed in the |
71 | * ish. | |
35cb309b KS |
72 | * |
73 | */ | |
fc0b162f | 74 | struct rawcb esis_pcb; |
6929d5df | 75 | int esis_config(), snpac_age(); |
35cb309b KS |
76 | int esis_sendspace = 2048; |
77 | int esis_recvspace = 2048; | |
78 | short esis_holding_time = ESIS_HT; | |
79 | short esis_config_time = ESIS_CONFIG; | |
fc0b162f | 80 | short esis_esconfig_time = ESIS_CONFIG; |
35cb309b | 81 | extern int iso_systype; |
fc0b162f | 82 | struct sockaddr_dl esis_dl = { sizeof(esis_dl), AF_LINK }; |
c2bb180a | 83 | extern char all_es_snpa[], all_is_snpa[]; |
35cb309b | 84 | |
a50e2bc0 | 85 | #define EXTEND_PACKET(m, mhdr, cp)\ |
35cb309b KS |
86 | if (((m)->m_next = m_getclr(M_DONTWAIT, MT_HEADER)) == NULL) {\ |
87 | esis_stat.es_nomem++;\ | |
88 | m_freem(mhdr);\ | |
89 | return;\ | |
90 | } else {\ | |
35cb309b | 91 | (m) = (m)->m_next;\ |
35cb309b KS |
92 | (cp) = mtod((m), caddr_t);\ |
93 | } | |
94 | /* | |
95 | * FUNCTION: esis_init | |
96 | * | |
97 | * PURPOSE: Initialize the kernel portion of esis protocol | |
98 | * | |
99 | * RETURNS: nothing | |
100 | * | |
101 | * SIDE EFFECTS: | |
102 | * | |
103 | * NOTES: | |
104 | */ | |
105 | esis_init() | |
106 | { | |
107 | extern struct clnl_protosw clnl_protox[256]; | |
85162407 | 108 | int esis_input(), isis_input(); |
35cb309b | 109 | #ifdef ISO_X25ESIS |
85162407 | 110 | int x25esis_input(); |
35cb309b KS |
111 | #endif ISO_X25ESIS |
112 | ||
fc0b162f KS |
113 | esis_pcb.rcb_next = esis_pcb.rcb_prev = &esis_pcb; |
114 | llinfo_llc.lc_next = llinfo_llc.lc_prev = &llinfo_llc; | |
35cb309b | 115 | |
35cb309b KS |
116 | timeout(snpac_age, (caddr_t)0, hz); |
117 | timeout(esis_config, (caddr_t)0, hz); | |
118 | ||
85162407 KS |
119 | clnl_protox[ISO9542_ESIS].clnl_input = esis_input; |
120 | clnl_protox[ISO10589_ISIS].clnl_input = isis_input; | |
35cb309b KS |
121 | #ifdef ISO_X25ESIS |
122 | clnl_protox[ISO9542X25_ESIS].clnl_input = x25esis_input; | |
123 | #endif ISO_X25ESIS | |
124 | } | |
125 | ||
126 | /* | |
127 | * FUNCTION: esis_usrreq | |
128 | * | |
129 | * PURPOSE: Handle user level esis requests | |
130 | * | |
131 | * RETURNS: 0 or appropriate errno | |
132 | * | |
133 | * SIDE EFFECTS: | |
134 | * | |
35cb309b | 135 | */ |
a50e2bc0 | 136 | /*ARGSUSED*/ |
b7468604 | 137 | esis_usrreq(so, req, m, nam, control) |
35cb309b KS |
138 | struct socket *so; /* socket: used only to get to this code */ |
139 | int req; /* request */ | |
140 | struct mbuf *m; /* data for request */ | |
141 | struct mbuf *nam; /* optional name */ | |
b7468604 | 142 | struct mbuf *control; /* optional control */ |
35cb309b | 143 | { |
fc0b162f KS |
144 | struct rawcb *rp = sotorawcb(so); |
145 | int error = 0; | |
146 | ||
6929d5df | 147 | if ((so->so_state & SS_PRIV) == 0) { |
fc0b162f KS |
148 | error = EACCES; |
149 | goto release; | |
150 | } | |
151 | if (rp == NULL && req != PRU_ATTACH) { | |
152 | error = EINVAL; | |
153 | goto release; | |
154 | } | |
155 | ||
156 | switch (req) { | |
157 | case PRU_ATTACH: | |
158 | if (rp != NULL) { | |
159 | error = EINVAL; | |
160 | break; | |
161 | } | |
162 | MALLOC(rp, struct rawcb *, sizeof(*rp), M_PCB, M_WAITOK); | |
163 | if (so->so_pcb = (caddr_t)rp) { | |
164 | bzero(so->so_pcb, sizeof(*rp)); | |
165 | insque(rp, &esis_pcb); | |
16c005e8 | 166 | rp->rcb_socket = so; |
fc0b162f KS |
167 | error = soreserve(so, esis_sendspace, esis_recvspace); |
168 | } else | |
169 | error = ENOBUFS; | |
170 | break; | |
171 | ||
172 | case PRU_SEND: | |
173 | if (nam == NULL) { | |
174 | error = EINVAL; | |
175 | break; | |
176 | } | |
177 | /* error checking here */ | |
178 | error = isis_output(mtod(nam,struct sockaddr_dl *), m); | |
179 | m = NULL; | |
180 | break; | |
181 | ||
182 | case PRU_DETACH: | |
183 | raw_detach(rp); | |
184 | break; | |
185 | ||
186 | case PRU_SHUTDOWN: | |
187 | socantsendmore(so); | |
188 | break; | |
189 | ||
190 | case PRU_ABORT: | |
191 | soisdisconnected(so); | |
192 | raw_detach(rp); | |
193 | break; | |
194 | ||
195 | case PRU_SENSE: | |
196 | return (0); | |
197 | ||
198 | default: | |
199 | return (EOPNOTSUPP); | |
200 | } | |
201 | release: | |
35cb309b KS |
202 | if (m != NULL) |
203 | m_freem(m); | |
204 | ||
fc0b162f | 205 | return (error); |
35cb309b KS |
206 | } |
207 | ||
208 | /* | |
209 | * FUNCTION: esis_input | |
210 | * | |
211 | * PURPOSE: Process an incoming esis packet | |
212 | * | |
213 | * RETURNS: nothing | |
214 | * | |
215 | * SIDE EFFECTS: | |
216 | * | |
217 | * NOTES: | |
218 | */ | |
219 | esis_input(m0, shp) | |
220 | struct mbuf *m0; /* ptr to first mbuf of pkt */ | |
221 | struct snpa_hdr *shp; /* subnetwork header */ | |
222 | { | |
fc0b162f | 223 | register struct esis_fixed *pdu = mtod(m0, struct esis_fixed *); |
a50e2bc0 | 224 | register int type; |
35cb309b | 225 | |
35cb309b KS |
226 | /* |
227 | * check checksum if necessary | |
228 | */ | |
a50e2bc0 | 229 | if (ESIS_CKSUM_REQUIRED(pdu) && iso_check_csum(m0, (int)pdu->esis_hdr_len)) { |
35cb309b KS |
230 | esis_stat.es_badcsum++; |
231 | goto bad; | |
232 | } | |
233 | ||
234 | /* check version */ | |
235 | if (pdu->esis_vers != ESIS_VERSION) { | |
236 | esis_stat.es_badvers++; | |
237 | goto bad; | |
238 | } | |
a50e2bc0 KS |
239 | type = pdu->esis_type & 0x1f; |
240 | switch (type) { | |
35cb309b KS |
241 | case ESIS_ESH: |
242 | esis_eshinput(m0, shp); | |
fc0b162f | 243 | break; |
35cb309b KS |
244 | |
245 | case ESIS_ISH: | |
246 | esis_ishinput(m0, shp); | |
fc0b162f | 247 | break; |
35cb309b KS |
248 | |
249 | case ESIS_RD: | |
250 | esis_rdinput(m0, shp); | |
fc0b162f | 251 | break; |
35cb309b | 252 | |
fc0b162f | 253 | default: |
35cb309b | 254 | esis_stat.es_badtype++; |
35cb309b KS |
255 | } |
256 | ||
257 | bad: | |
fc0b162f KS |
258 | if (esis_pcb.rcb_next != &esis_pcb) |
259 | isis_input(m0, shp); | |
260 | else | |
261 | m_freem(m0); | |
35cb309b KS |
262 | } |
263 | ||
264 | /* | |
265 | * FUNCTION: esis_rdoutput | |
266 | * | |
267 | * PURPOSE: Transmit a redirect pdu | |
268 | * | |
269 | * RETURNS: nothing | |
270 | * | |
271 | * SIDE EFFECTS: | |
272 | * | |
273 | * NOTES: Assumes there is enough space for fixed part of header, | |
274 | * DA, BSNPA and NET in first mbuf. | |
275 | */ | |
c2bb180a | 276 | esis_rdoutput(inbound_shp, inbound_m, inbound_oidx, rd_dstnsap, rt) |
35cb309b KS |
277 | struct snpa_hdr *inbound_shp; /* snpa hdr from incoming packet */ |
278 | struct mbuf *inbound_m; /* incoming pkt itself */ | |
279 | struct clnp_optidx *inbound_oidx; /* clnp options assoc with incoming pkt */ | |
280 | struct iso_addr *rd_dstnsap; /* ultimate destination of pkt */ | |
c2bb180a | 281 | struct rtentry *rt; /* snpa cache info regarding next hop of |
35cb309b KS |
282 | pkt */ |
283 | { | |
284 | struct mbuf *m, *m0; | |
285 | caddr_t cp; | |
286 | struct esis_fixed *pdu; | |
287 | int len, total_len = 0; | |
288 | struct sockaddr_iso siso; | |
289 | struct ifnet *ifp = inbound_shp->snh_ifp; | |
c2bb180a KS |
290 | struct sockaddr_dl *sdl; |
291 | struct iso_addr *rd_gwnsap; | |
292 | ||
293 | if (rt->rt_flags & RTF_GATEWAY) { | |
294 | rd_gwnsap = &((struct sockaddr_iso *)rt->rt_gateway)->siso_addr; | |
295 | rt = rtalloc1(rt->rt_gateway, 0); | |
296 | } else | |
297 | rd_gwnsap = &((struct sockaddr_iso *)rt_key(rt))->siso_addr; | |
298 | if (rt == 0 || (sdl = (struct sockaddr_dl *)rt->rt_gateway) == 0 || | |
299 | sdl->sdl_family != AF_LINK) { | |
300 | /* maybe we should have a function that you | |
301 | could put in the iso_ifaddr structure | |
302 | which could translate iso_addrs into snpa's | |
303 | where there is a known mapping for that address type */ | |
304 | esis_stat.es_badtype++; | |
305 | return; | |
306 | } | |
35cb309b | 307 | esis_stat.es_rdsent++; |
35cb309b | 308 | IFDEBUG(D_ESISOUTPUT) |
35cb309b KS |
309 | printf("esis_rdoutput: ifp x%x (%s%d), ht %d, m x%x, oidx x%x\n", |
310 | ifp, ifp->if_name, ifp->if_unit, esis_holding_time, inbound_m, | |
311 | inbound_oidx); | |
312 | printf("\tdestination: %s\n", clnp_iso_addrp(rd_dstnsap)); | |
c2bb180a | 313 | printf("\tredirected toward:%s\n", clnp_iso_addrp(rd_gwnsap)); |
35cb309b KS |
314 | ENDDEBUG |
315 | ||
a50e2bc0 | 316 | if ((m0 = m = m_gethdr(M_DONTWAIT, MT_HEADER)) == NULL) { |
35cb309b KS |
317 | esis_stat.es_nomem++; |
318 | return; | |
319 | } | |
a50e2bc0 | 320 | bzero(mtod(m, caddr_t), MHLEN); |
35cb309b KS |
321 | |
322 | pdu = mtod(m, struct esis_fixed *); | |
a50e2bc0 | 323 | cp = (caddr_t)(pdu + 1); /*pointer arith.; 1st byte after header */ |
35cb309b KS |
324 | len = sizeof(struct esis_fixed); |
325 | ||
326 | /* | |
327 | * Build fixed part of header | |
328 | */ | |
329 | pdu->esis_proto_id = ISO9542_ESIS; | |
330 | pdu->esis_vers = ESIS_VERSION; | |
331 | pdu->esis_type = ESIS_RD; | |
332 | HTOC(pdu->esis_ht_msb, pdu->esis_ht_lsb, esis_holding_time); | |
333 | ||
334 | /* Insert destination address */ | |
d910a5d6 | 335 | (void) esis_insert_addr(&cp, &len, rd_dstnsap, m, 0); |
35cb309b KS |
336 | |
337 | /* Insert the snpa of better next hop */ | |
c2bb180a KS |
338 | *cp++ = sdl->sdl_alen; |
339 | bcopy(LLADDR(sdl), cp, sdl->sdl_alen); | |
340 | cp += sdl->sdl_alen; | |
341 | len += (sdl->sdl_alen + 1); | |
35cb309b KS |
342 | |
343 | /* | |
344 | * If the next hop is not the destination, then it ought to be | |
345 | * an IS and it should be inserted next. Else, set the | |
346 | * NETL to 0 | |
347 | */ | |
348 | /* PHASE2 use mask from ifp of outgoing interface */ | |
c2bb180a KS |
349 | if (!iso_addrmatch1(rd_dstnsap, rd_gwnsap)) { |
350 | /* this should not happen: | |
35cb309b | 351 | if ((nhop_sc->sc_flags & SNPA_IS) == 0) { |
35cb309b KS |
352 | printf("esis_rdoutput: next hop is not dst and not an IS\n"); |
353 | m_freem(m0); | |
354 | return; | |
c2bb180a KS |
355 | } */ |
356 | (void) esis_insert_addr(&cp, &len, rd_gwnsap, m, 0); | |
35cb309b KS |
357 | } else { |
358 | *cp++ = 0; /* NETL */ | |
359 | len++; | |
360 | } | |
a50e2bc0 | 361 | m->m_len = len; |
35cb309b KS |
362 | |
363 | /* | |
364 | * PHASE2 | |
365 | * If redirect is to an IS, add an address mask. The mask to be | |
366 | * used should be the mask present in the routing entry used to | |
367 | * forward the original data packet. | |
368 | */ | |
369 | ||
370 | /* | |
371 | * Copy Qos, priority, or security options present in original npdu | |
372 | */ | |
373 | if (inbound_oidx) { | |
c2bb180a | 374 | /* THIS CODE IS CURRENTLY (mostly) UNTESTED */ |
35cb309b KS |
375 | int optlen = 0; |
376 | if (inbound_oidx->cni_qos_formatp) | |
377 | optlen += (inbound_oidx->cni_qos_len + 2); | |
378 | if (inbound_oidx->cni_priorp) /* priority option is 1 byte long */ | |
379 | optlen += 3; | |
380 | if (inbound_oidx->cni_securep) | |
381 | optlen += (inbound_oidx->cni_secure_len + 2); | |
a50e2bc0 KS |
382 | if (M_TRAILINGSPACE(m) < optlen) { |
383 | EXTEND_PACKET(m, m0, cp); | |
384 | m->m_len = 0; | |
35cb309b KS |
385 | /* assumes MLEN > optlen */ |
386 | } | |
387 | /* assume MLEN-len > optlen */ | |
388 | /* | |
389 | * When copying options, copy from ptr - 2 in order to grab | |
390 | * the option code and length | |
391 | */ | |
392 | if (inbound_oidx->cni_qos_formatp) { | |
c2bb180a KS |
393 | bcopy(mtod(inbound_m, caddr_t) + inbound_oidx->cni_qos_formatp - 2, |
394 | cp, (unsigned)(inbound_oidx->cni_qos_len + 2)); | |
395 | cp += inbound_oidx->cni_qos_len + 2; | |
35cb309b KS |
396 | } |
397 | if (inbound_oidx->cni_priorp) { | |
c2bb180a KS |
398 | bcopy(mtod(inbound_m, caddr_t) + inbound_oidx->cni_priorp - 2, |
399 | cp, 3); | |
400 | cp += 3; | |
35cb309b KS |
401 | } |
402 | if (inbound_oidx->cni_securep) { | |
c2bb180a | 403 | bcopy(mtod(inbound_m, caddr_t) + inbound_oidx->cni_securep - 2, cp, |
a50e2bc0 | 404 | (unsigned)(inbound_oidx->cni_secure_len + 2)); |
c2bb180a | 405 | cp += inbound_oidx->cni_secure_len + 2; |
35cb309b | 406 | } |
a50e2bc0 | 407 | m->m_len += optlen; |
c2bb180a | 408 | len += optlen; |
35cb309b KS |
409 | } |
410 | ||
a50e2bc0 | 411 | pdu->esis_hdr_len = m0->m_pkthdr.len = len; |
35cb309b KS |
412 | iso_gen_csum(m0, ESIS_CKSUM_OFF, (int)pdu->esis_hdr_len); |
413 | ||
a50e2bc0 | 414 | bzero((caddr_t)&siso, sizeof(siso)); |
35cb309b | 415 | siso.siso_family = AF_ISO; |
a50e2bc0 KS |
416 | siso.siso_data[0] = AFI_SNA; |
417 | siso.siso_nlen = 6 + 1; /* should be taken from snpa_hdr */ | |
35cb309b | 418 | /* +1 is for AFI */ |
a50e2bc0 | 419 | bcopy(inbound_shp->snh_shost, siso.siso_data + 1, 6); |
02863b0e | 420 | (ifp->if_output)(ifp, m0, (struct sockaddr *)&siso, 0); |
35cb309b KS |
421 | } |
422 | ||
35cb309b KS |
423 | /* |
424 | * FUNCTION: esis_insert_addr | |
425 | * | |
426 | * PURPOSE: Insert an iso_addr into a buffer | |
427 | * | |
428 | * RETURNS: true if buffer was big enough, else false | |
429 | * | |
430 | * SIDE EFFECTS: Increment buf & len according to size of iso_addr | |
431 | * | |
432 | * NOTES: Plus 1 here is for length byte | |
433 | */ | |
d910a5d6 | 434 | esis_insert_addr(buf, len, isoa, m, nsellen) |
c2bb180a KS |
435 | register caddr_t *buf; /* ptr to buffer to put address into */ |
436 | int *len; /* ptr to length of buffer so far */ | |
437 | register struct iso_addr *isoa; /* ptr to address */ | |
438 | register struct mbuf *m; /* determine if there remains space */ | |
439 | int nsellen; | |
35cb309b | 440 | { |
c2bb180a KS |
441 | register int newlen, result = 0; |
442 | ||
443 | isoa->isoa_len -= nsellen; | |
444 | newlen = isoa->isoa_len + 1; | |
445 | if (newlen <= M_TRAILINGSPACE(m)) { | |
446 | bcopy((caddr_t)isoa, *buf, newlen); | |
447 | *len += newlen; | |
448 | *buf += newlen; | |
449 | m->m_len += newlen; | |
450 | result = 1; | |
451 | } | |
452 | isoa->isoa_len += nsellen; | |
453 | return (result); | |
35cb309b KS |
454 | } |
455 | ||
af8f5eff KS |
456 | #define ESIS_EXTRACT_ADDR(d, b) { d = (struct iso_addr *)(b); b += (1 + *b); \ |
457 | if (b > buflim) {esis_stat.es_toosmall++; goto bad;}} | |
458 | #define ESIS_NEXT_OPTION(b) { b += (2 + b[1]); \ | |
459 | if (b > buflim) {esis_stat.es_toosmall++; goto bad;}} | |
087ffc43 | 460 | int ESHonly = 0; |
35cb309b KS |
461 | /* |
462 | ||
463 | /* | |
464 | * FUNCTION: esis_eshinput | |
465 | * | |
466 | * PURPOSE: Process an incoming ESH pdu | |
467 | * | |
468 | * RETURNS: nothing | |
469 | * | |
470 | * SIDE EFFECTS: | |
471 | * | |
472 | * NOTES: | |
473 | */ | |
474 | esis_eshinput(m, shp) | |
475 | struct mbuf *m; /* esh pdu */ | |
476 | struct snpa_hdr *shp; /* subnetwork header */ | |
477 | { | |
d910a5d6 | 478 | struct esis_fixed *pdu = mtod(m, struct esis_fixed *); |
35cb309b | 479 | u_short ht; /* holding time */ |
d910a5d6 | 480 | struct iso_addr *nsap; |
af8f5eff | 481 | int naddr; |
a50e2bc0 | 482 | u_char *buf = (u_char *)(pdu + 1); |
af8f5eff | 483 | u_char *buflim = pdu->esis_hdr_len + (u_char *)pdu; |
c2bb180a | 484 | int new_entry = 0; |
35cb309b KS |
485 | |
486 | esis_stat.es_eshrcvd++; | |
487 | ||
488 | CTOH(pdu->esis_ht_msb, pdu->esis_ht_lsb, ht); | |
489 | ||
af8f5eff KS |
490 | naddr = *buf++; |
491 | if (buf >= buflim) | |
35cb309b | 492 | goto bad; |
c2bb180a | 493 | if (naddr == 1) { |
af8f5eff | 494 | ESIS_EXTRACT_ADDR(nsap, buf); |
c2bb180a KS |
495 | new_entry = snpac_add(shp->snh_ifp, |
496 | nsap, shp->snh_shost, SNPA_ES, ht, 0); | |
497 | } else { | |
498 | int nsellength = 0, nlen = 0; | |
499 | { | |
500 | /* See if we want to compress out multiple nsaps differing | |
501 | only by nsel */ | |
502 | register struct ifaddr *ifa = shp->snh_ifp->if_addrlist; | |
503 | for (; ifa; ifa = ifa->ifa_next) | |
504 | if (ifa->ifa_addr->sa_family == AF_ISO) { | |
505 | nsellength = ((struct iso_ifaddr *)ifa)->ia_addr.siso_tlen; | |
506 | break; | |
507 | } | |
508 | } | |
af8f5eff | 509 | IFDEBUG(D_ESISINPUT) |
c2bb180a KS |
510 | printf("esis_eshinput: esh: ht %d, naddr %d nsellength %d\n", |
511 | ht, naddr, nsellength); | |
af8f5eff | 512 | ENDDEBUG |
c2bb180a KS |
513 | while (naddr-- > 0) { |
514 | struct iso_addr *nsap2; u_char *buf2; | |
515 | ESIS_EXTRACT_ADDR(nsap, buf); | |
516 | /* see if there is at least one more nsap in ESH differing | |
517 | only by nsel */ | |
518 | if (nsellength != 0) for (buf2 = buf; buf2 < buflim;) { | |
519 | ESIS_EXTRACT_ADDR(nsap2, buf2); | |
520 | IFDEBUG(D_ESISINPUT) | |
521 | printf("esis_eshinput: comparing %s ", | |
522 | clnp_iso_addrp(nsap)); | |
523 | printf("and %s\n", clnp_iso_addrp(nsap2)); | |
524 | ENDDEBUG | |
525 | if (Bcmp(nsap->isoa_genaddr, nsap2->isoa_genaddr, | |
526 | nsap->isoa_len - nsellength) == 0) { | |
527 | nlen = nsellength; | |
528 | break; | |
529 | } | |
530 | } | |
531 | new_entry |= snpac_add(shp->snh_ifp, | |
532 | nsap, shp->snh_shost, SNPA_ES, ht, nlen); | |
533 | nlen = 0; | |
534 | } | |
35cb309b | 535 | } |
c2bb180a KS |
536 | IFDEBUG(D_ESISINPUT) |
537 | printf("esis_eshinput: nsap %s is %s\n", | |
538 | clnp_iso_addrp(nsap), new_entry ? "new" : "old"); | |
539 | ENDDEBUG | |
540 | if (new_entry && (iso_systype & SNPA_IS)) | |
541 | esis_shoutput(shp->snh_ifp, ESIS_ISH, esis_holding_time, | |
542 | shp->snh_shost, 6, (struct iso_addr *)0); | |
af8f5eff | 543 | bad: |
af8f5eff | 544 | return; |
35cb309b KS |
545 | } |
546 | ||
547 | /* | |
548 | * FUNCTION: esis_ishinput | |
549 | * | |
550 | * PURPOSE: process an incoming ISH pdu | |
551 | * | |
552 | * RETURNS: | |
553 | * | |
554 | * SIDE EFFECTS: | |
555 | * | |
556 | * NOTES: | |
557 | */ | |
558 | esis_ishinput(m, shp) | |
559 | struct mbuf *m; /* esh pdu */ | |
560 | struct snpa_hdr *shp; /* subnetwork header */ | |
561 | { | |
562 | struct esis_fixed *pdu = mtod(m, struct esis_fixed *); | |
087ffc43 | 563 | u_short ht, newct; /* holding time */ |
af8f5eff KS |
564 | struct iso_addr *nsap; /* Network Entity Title */ |
565 | register u_char *buf = (u_char *) (pdu + 1); | |
566 | register u_char *buflim = pdu->esis_hdr_len + (u_char *)pdu; | |
567 | int new_entry; | |
35cb309b KS |
568 | |
569 | esis_stat.es_ishrcvd++; | |
570 | CTOH(pdu->esis_ht_msb, pdu->esis_ht_lsb, ht); | |
571 | ||
572 | IFDEBUG(D_ESISINPUT) | |
573 | printf("esis_ishinput: ish: ht %d\n", ht); | |
574 | ENDDEBUG | |
af8f5eff | 575 | if (ESHonly) |
a50e2bc0 | 576 | goto bad; |
a50e2bc0 | 577 | |
af8f5eff KS |
578 | ESIS_EXTRACT_ADDR(nsap, buf); |
579 | ||
580 | while (buf < buflim) { | |
581 | switch (*buf) { | |
a50e2bc0 | 582 | case ESISOVAL_ESCT: |
16c005e8 KS |
583 | if (iso_systype & SNPA_IS) |
584 | break; | |
af8f5eff | 585 | if (buf[1] != 2) |
a50e2bc0 | 586 | goto bad; |
087ffc43 KS |
587 | CTOH(buf[2], buf[3], newct); |
588 | if (esis_config_time != newct) { | |
589 | untimeout(esis_config,0); | |
590 | esis_config_time = newct; | |
591 | esis_config(); | |
592 | } | |
af8f5eff KS |
593 | break; |
594 | ||
595 | default: | |
596 | printf("Unknown ISH option: %x\n", *buf); | |
a50e2bc0 | 597 | } |
af8f5eff | 598 | ESIS_NEXT_OPTION(buf); |
a50e2bc0 | 599 | } |
c2bb180a | 600 | new_entry = snpac_add(shp->snh_ifp, nsap, shp->snh_shost, SNPA_IS, ht, 0); |
a50e2bc0 KS |
601 | IFDEBUG(D_ESISINPUT) |
602 | printf("esis_ishinput: nsap %s is %s\n", | |
603 | clnp_iso_addrp(nsap), new_entry ? "new" : "old"); | |
604 | ENDDEBUG | |
35cb309b | 605 | |
a50e2bc0 KS |
606 | if (new_entry) |
607 | esis_shoutput(shp->snh_ifp, | |
608 | iso_systype & SNPA_ES ? ESIS_ESH : ESIS_ISH, | |
c2bb180a | 609 | esis_holding_time, shp->snh_shost, 6, (struct iso_addr *)0); |
af8f5eff | 610 | bad: |
af8f5eff | 611 | return; |
35cb309b KS |
612 | } |
613 | ||
614 | /* | |
615 | * FUNCTION: esis_rdinput | |
616 | * | |
617 | * PURPOSE: Process an incoming RD pdu | |
618 | * | |
619 | * RETURNS: | |
620 | * | |
621 | * SIDE EFFECTS: | |
622 | * | |
623 | * NOTES: | |
624 | */ | |
625 | esis_rdinput(m0, shp) | |
626 | struct mbuf *m0; /* esh pdu */ | |
627 | struct snpa_hdr *shp; /* subnetwork header */ | |
628 | { | |
629 | struct esis_fixed *pdu = mtod(m0, struct esis_fixed *); | |
630 | u_short ht; /* holding time */ | |
af8f5eff KS |
631 | struct iso_addr *da, *net = 0, *netmask = 0, *snpamask = 0; |
632 | register struct iso_addr *bsnpa; | |
633 | register u_char *buf = (u_char *)(pdu + 1); | |
634 | register u_char *buflim = pdu->esis_hdr_len + (u_char *)pdu; | |
35cb309b KS |
635 | |
636 | esis_stat.es_rdrcvd++; | |
637 | ||
638 | /* intermediate systems ignore redirects */ | |
639 | if (iso_systype & SNPA_IS) | |
fc0b162f | 640 | return; |
af8f5eff | 641 | if (ESHonly) |
fc0b162f | 642 | return; |
35cb309b KS |
643 | |
644 | CTOH(pdu->esis_ht_msb, pdu->esis_ht_lsb, ht); | |
af8f5eff | 645 | if (buf >= buflim) |
fc0b162f | 646 | return; |
35cb309b KS |
647 | |
648 | /* Extract DA */ | |
af8f5eff | 649 | ESIS_EXTRACT_ADDR(da, buf); |
a50e2bc0 | 650 | |
35cb309b | 651 | /* Extract better snpa */ |
af8f5eff KS |
652 | ESIS_EXTRACT_ADDR(bsnpa, buf); |
653 | ||
35cb309b | 654 | /* Extract NET if present */ |
af8f5eff | 655 | if (buf < buflim) { |
c2bb180a KS |
656 | if (*buf == 0) |
657 | buf++; /* no NET present, skip NETL anyway */ | |
658 | else | |
659 | ESIS_EXTRACT_ADDR(net, buf); | |
a50e2bc0 KS |
660 | } |
661 | ||
662 | /* process options */ | |
af8f5eff KS |
663 | while (buf < buflim) { |
664 | switch (*buf) { | |
a50e2bc0 KS |
665 | case ESISOVAL_SNPAMASK: |
666 | if (snpamask) /* duplicate */ | |
fc0b162f | 667 | return; |
af8f5eff | 668 | snpamask = (struct iso_addr *)(buf + 1); |
a50e2bc0 KS |
669 | break; |
670 | ||
671 | case ESISOVAL_NETMASK: | |
672 | if (netmask) /* duplicate */ | |
fc0b162f | 673 | return; |
af8f5eff KS |
674 | netmask = (struct iso_addr *)(buf + 1); |
675 | break; | |
676 | ||
677 | default: | |
678 | printf("Unknown option in ESIS RD (0x%x)\n", buf[-1]); | |
35cb309b | 679 | } |
af8f5eff | 680 | ESIS_NEXT_OPTION(buf); |
35cb309b KS |
681 | } |
682 | ||
683 | IFDEBUG(D_ESISINPUT) | |
a50e2bc0 KS |
684 | printf("esis_rdinput: rd: ht %d, da %s\n", ht, clnp_iso_addrp(da)); |
685 | if (net) | |
686 | printf("\t: net %s\n", clnp_iso_addrp(net)); | |
35cb309b | 687 | ENDDEBUG |
35cb309b KS |
688 | /* |
689 | * If netl is zero, then redirect is to an ES. We need to add an entry | |
690 | * to the snpa cache for (destination, better snpa). | |
691 | * If netl is not zero, then the redirect is to an IS. In this | |
692 | * case, add an snpa cache entry for (net, better snpa). | |
693 | * | |
694 | * If the redirect is to an IS, add a route entry towards that | |
695 | * IS. | |
696 | */ | |
af8f5eff | 697 | if (net == 0 || net->isoa_len == 0 || snpamask) { |
35cb309b | 698 | /* redirect to an ES */ |
af8f5eff | 699 | snpac_add(shp->snh_ifp, da, |
c2bb180a | 700 | bsnpa->isoa_genaddr, SNPA_ES, ht, 0); |
35cb309b | 701 | } else { |
af8f5eff | 702 | snpac_add(shp->snh_ifp, net, |
c2bb180a | 703 | bsnpa->isoa_genaddr, SNPA_IS, ht, 0); |
af8f5eff | 704 | snpac_addrt(shp->snh_ifp, da, net, netmask); |
35cb309b | 705 | } |
fc0b162f | 706 | bad: ; /* Needed by ESIS_NEXT_OPTION */ |
35cb309b KS |
707 | } |
708 | ||
709 | /* | |
710 | * FUNCTION: esis_config | |
711 | * | |
712 | * PURPOSE: Report configuration | |
713 | * | |
714 | * RETURNS: | |
715 | * | |
716 | * SIDE EFFECTS: | |
717 | * | |
718 | * NOTES: Called every esis_config_time seconds | |
719 | */ | |
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 | ||
1037 | #endif ISO |