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600d71da KS |
1 | /*********************************************************** |
2 | Copyright IBM Corporation 1987 | |
3 | ||
4 | All Rights Reserved | |
5 | ||
6 | Permission to use, copy, modify, and distribute this software and its | |
7 | documentation for any purpose and without fee is hereby granted, | |
8 | provided that the above copyright notice appear in all copies and that | |
9 | both that copyright notice and this permission notice appear in | |
10 | supporting documentation, and that the name of IBM not be | |
11 | used in advertising or publicity pertaining to distribution of the | |
12 | software without specific, written prior permission. | |
13 | ||
14 | IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
15 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
16 | IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
17 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
18 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
19 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
20 | SOFTWARE. | |
21 | ||
22 | ******************************************************************/ | |
23 | ||
24 | /* | |
25 | * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison | |
26 | */ | |
27 | /* $Header: iso_snpac.c,v 1.8 88/09/19 13:51:36 hagens Exp $ */ | |
28 | /* $Source: /usr/argo/sys/netiso/RCS/iso_snpac.c,v $ */ | |
d12b96b5 | 29 | /* @(#)iso_snpac.c 7.9 (Berkeley) %G% */ |
600d71da KS |
30 | |
31 | #ifndef lint | |
32 | static char *rcsid = "$Header: iso_snpac.c,v 1.8 88/09/19 13:51:36 hagens Exp $"; | |
33 | #endif lint | |
34 | ||
35 | #ifdef ISO | |
36 | ||
a50e2bc0 KS |
37 | #include "types.h" |
38 | #include "param.h" | |
d910a5d6 | 39 | #include "systm.h" |
849cbd39 | 40 | #include "user.h" |
a50e2bc0 KS |
41 | #include "mbuf.h" |
42 | #include "domain.h" | |
43 | #include "protosw.h" | |
44 | #include "socket.h" | |
45 | #include "socketvar.h" | |
46 | #include "errno.h" | |
47 | #include "ioctl.h" | |
a50e2bc0 | 48 | #include "kernel.h" |
600d71da KS |
49 | |
50 | #include "../net/if.h" | |
d910a5d6 | 51 | #include "../net/if_dl.h" |
600d71da KS |
52 | #include "../net/route.h" |
53 | ||
a50e2bc0 KS |
54 | #include "iso.h" |
55 | #include "iso_var.h" | |
56 | #include "iso_snpac.h" | |
57 | #include "clnp.h" | |
58 | #include "clnp_stat.h" | |
a50e2bc0 | 59 | #include "esis.h" |
44f52ea5 | 60 | #include "argo_debug.h" |
600d71da | 61 | |
600d71da | 62 | int iso_systype = SNPA_ES; /* default to be an ES */ |
d12b96b5 KS |
63 | extern short esis_holding_time, esis_config_time, esis_esconfig_time; |
64 | extern int esis_config(); | |
a50e2bc0 KS |
65 | |
66 | struct sockaddr_iso blank_siso = {sizeof(blank_siso), AF_ISO}; | |
67 | extern u_long iso_hashchar(); | |
68 | static struct sockaddr_iso | |
69 | dst = {sizeof(dst), AF_ISO}, | |
70 | gte = {sizeof(dst), AF_ISO}, | |
71 | src = {sizeof(dst), AF_ISO}, | |
72 | msk = {sizeof(dst), AF_ISO}, | |
73 | zmk = {1}; | |
74 | #define zsi blank_siso | |
75 | #define zero_isoa zsi.siso_addr | |
76 | #define zap_isoaddr(a, b) (bzero((caddr_t)&a.siso_addr, sizeof(*r)), \ | |
77 | ((r = b) && bcopy((caddr_t)r, (caddr_t)&a.siso_addr, 1 + (r)->isoa_len))) | |
78 | #define S(x) ((struct sockaddr *)&(x)) | |
600d71da | 79 | |
d910a5d6 KS |
80 | static struct sockaddr_dl blank_dl = {sizeof(blank_dl), AF_LINK}; |
81 | static struct sockaddr_dl gte_dl; | |
82 | #define zap_linkaddr(a, b, c, i) \ | |
83 | (*a = blank_dl, bcopy(b, a->sdl_data, a->sdl_alen = c), a->sdl_index = i) | |
600d71da KS |
84 | |
85 | /* | |
86 | * We only keep track of a single IS at a time. | |
87 | */ | |
d910a5d6 | 88 | struct rtentry *known_is; |
600d71da KS |
89 | |
90 | /* | |
91 | * Addresses taken from NBS agreements, December 1987. | |
92 | * | |
93 | * These addresses assume on-the-wire transmission of least significant | |
94 | * bit first. This is the method used by 802.3. When these | |
95 | * addresses are passed to the token ring driver, (802.5), they | |
96 | * must be bit-swaped because 802.5 transmission order is MSb first. | |
97 | * | |
98 | * Furthermore, according to IBM Austin, these addresses are not | |
99 | * true token ring multicast addresses. More work is necessary | |
100 | * to get multicast to work right on token ring. | |
101 | * | |
102 | * Currently, the token ring driver does not handle multicast, so | |
103 | * these addresses are converted into the broadcast address in | |
104 | * lan_output() That means that if these multicast addresses change | |
105 | * the token ring driver must be altered. | |
106 | */ | |
c2bb180a KS |
107 | char all_es_snpa[] = { 0x09, 0x00, 0x2b, 0x00, 0x00, 0x04 }; |
108 | char all_is_snpa[] = { 0x09, 0x00, 0x2b, 0x00, 0x00, 0x05 }; | |
600d71da | 109 | |
d910a5d6 KS |
110 | union sockunion { |
111 | struct sockaddr_iso siso; | |
112 | struct sockaddr_dl sdl; | |
113 | struct sockaddr sa; | |
114 | }; | |
600d71da | 115 | |
d910a5d6 KS |
116 | /* |
117 | * FUNCTION: llc_rtrequest | |
118 | * | |
119 | * PURPOSE: Manage routing table entries specific to LLC for ISO. | |
120 | * | |
121 | * NOTES: This does a lot of obscure magic; | |
122 | */ | |
123 | llc_rtrequest(req, rt, sa) | |
124 | int req; | |
125 | register struct rtentry *rt; | |
126 | struct sockaddr *sa; | |
127 | { | |
128 | register union sockunion *gate = (union sockunion *)rt->rt_gateway; | |
129 | register struct llinfo_llc *lc = (struct llinfo_llc *)rt->rt_llinfo, *lc2; | |
130 | struct rtentry *rt2; | |
131 | struct ifnet *ifp = rt->rt_ifp; | |
132 | int addrlen = ifp->if_addrlen; | |
c2bb180a | 133 | static struct rtentry *recursing = 0; |
d910a5d6 | 134 | |
c2bb180a KS |
135 | IFDEBUG (D_SNPA) |
136 | printf("llc_rtrequest(%d, %x, %x)\n", req, rt, sa); | |
137 | ENDDEBUG | |
138 | if (rt->rt_flags & RTF_GATEWAY) { | |
139 | if (recursing) { | |
140 | log("llc_rtrequest: gateway route points to same type %x %x\n", | |
141 | recursing, rt); | |
142 | } else switch (req) { | |
143 | case RTM_RESOLVE: | |
144 | case RTM_ADD: | |
145 | recursing = rt; | |
146 | rt->rt_llinfo = (caddr_t)rtalloc1(&gate->sa, 1); | |
147 | recursing = 0; | |
148 | return; | |
149 | ||
150 | case RTM_DELETE: | |
151 | if (lc) | |
152 | RTFREE((struct rtentry *)lc); | |
153 | rt->rt_llinfo = 0; | |
d910a5d6 | 154 | } |
c2bb180a | 155 | } else switch (req) { |
d910a5d6 | 156 | case RTM_ADD: |
c2bb180a KS |
157 | /* |
158 | * Case 1: This route may come from a route to iface with mask | |
159 | * or from a default route. | |
160 | */ | |
d910a5d6 | 161 | if (rt->rt_flags & RTF_CLONING) { |
c2bb180a KS |
162 | register struct ifaddr *ifa; |
163 | register struct sockaddr *sa; | |
164 | for (ifa = ifp->if_addrlist; ifa; ifa->ifa_next) | |
165 | if ((sa = ifa->ifa_addr)->sa_family == AF_LINK) { | |
166 | if (sa->sa_len > gate->sa.sa_len) | |
167 | log("llc_rtrequest: cloning address too small\n"); | |
168 | else { | |
169 | Bcopy(sa, gate, gate->sa.sa_len); | |
170 | gate->sdl.sdl_alen = 0; | |
171 | } | |
172 | return; | |
d910a5d6 | 173 | } |
c2bb180a KS |
174 | if (ifa == 0) |
175 | log("llc_rtrequest: can't find LL ifaddr for iface\n"); | |
176 | return; | |
177 | } | |
178 | /* FALLTHROUGH */ | |
179 | case RTM_RESOLVE: | |
180 | /* | |
181 | * Case 2: This route may come from cloning, or a manual route | |
182 | * add with a LL address. | |
183 | */ | |
184 | if (gate->sdl.sdl_family != AF_LINK) { | |
185 | log("llc_rtrequest: got non-link non-gateway route\n"); | |
186 | return; | |
d910a5d6 | 187 | } |
c2bb180a KS |
188 | if (lc != 0) |
189 | log("llc_rtrequest: losing old rt_llinfo\n"); | |
190 | R_Malloc(lc, struct llinfo_llc *, sizeof (*lc)); | |
191 | rt->rt_llinfo = (caddr_t)lc; | |
192 | if (lc == 0) { | |
193 | log("llc_rtrequest: malloc failed\n"); | |
194 | return; | |
195 | } | |
196 | Bzero(lc, sizeof(*lc)); | |
197 | lc->lc_rt = rt; | |
198 | rt->rt_flags |= RTF_LLINFO; | |
199 | insque(lc, &llinfo_llc); | |
200 | if (gate->sdl.sdl_alen == sizeof(struct esis_req) + addrlen) { | |
201 | gate->sdl.sdl_alen -= sizeof(struct esis_req); | |
202 | bcopy(addrlen + LLADDR(&gate->sdl), | |
203 | (caddr_t)&lc->lc_er, sizeof(lc->lc_er)); | |
204 | } else if (gate->sdl.sdl_alen == addrlen) | |
205 | lc->lc_flags = (SNPA_ES | SNPA_VALID | SNPA_PERM); | |
d910a5d6 KS |
206 | break; |
207 | case RTM_DELETE: | |
c2bb180a KS |
208 | if (lc == 0 || (rt->rt_flags & RTF_CLONING)) |
209 | return; | |
210 | remque(lc); | |
211 | Free(lc); | |
212 | rt->rt_llinfo = 0; | |
213 | rt->rt_flags &= ~RTF_LLINFO; | |
d910a5d6 KS |
214 | break; |
215 | } | |
216 | } | |
600d71da KS |
217 | /* |
218 | * FUNCTION: iso_snparesolve | |
219 | * | |
220 | * PURPOSE: Resolve an iso address into snpa address | |
221 | * | |
222 | * RETURNS: 0 if addr is resolved | |
223 | * errno if addr is unknown | |
224 | * | |
225 | * SIDE EFFECTS: | |
226 | * | |
d910a5d6 KS |
227 | * NOTES: Now that we have folded the snpa cache into the routing |
228 | * table, we know there is no snpa address known for this | |
229 | * destination. If we know of a default IS, then the address | |
230 | * of the IS is returned. If no IS is known, then return the | |
231 | * multi-cast address for "all ES" for this interface. | |
600d71da KS |
232 | * |
233 | * NB: the last case described above constitutes the | |
234 | * query configuration function 9542, sec 6.5 | |
235 | * A mechanism is needed to prevent this function from | |
236 | * being invoked if the system is an IS. | |
237 | */ | |
a50e2bc0 | 238 | iso_snparesolve(ifp, dest, snpa, snpa_len) |
d910a5d6 KS |
239 | struct ifnet *ifp; /* outgoing interface */ |
240 | struct sockaddr_iso *dest; /* destination */ | |
241 | caddr_t snpa; /* RESULT: snpa to be used */ | |
242 | int *snpa_len; /* RESULT: length of snpa */ | |
600d71da | 243 | { |
d910a5d6 KS |
244 | struct llinfo_llc *sc; /* ptr to snpa table entry */ |
245 | caddr_t found_snpa; | |
246 | int addrlen; | |
600d71da KS |
247 | |
248 | /* | |
249 | * This hack allows us to send esis packets that have the destination snpa | |
250 | * addresss embedded in the destination nsap address | |
251 | */ | |
d910a5d6 | 252 | if (dest->siso_data[0] == AFI_SNA) { |
600d71da KS |
253 | /* |
254 | * This is a subnetwork address. Return it immediately | |
255 | */ | |
256 | IFDEBUG(D_SNPA) | |
257 | printf("iso_snparesolve: return SN address\n"); | |
258 | ENDDEBUG | |
d910a5d6 KS |
259 | addrlen = dest->siso_nlen - 1; /* subtract size of AFI */ |
260 | found_snpa = (caddr_t) dest->siso_data + 1; | |
600d71da | 261 | /* |
d910a5d6 KS |
262 | * If we are an IS, we can't do much with the packet; |
263 | * Check if we know about an IS. | |
600d71da | 264 | */ |
d910a5d6 KS |
265 | } else if (iso_systype != SNPA_IS && known_is != 0 && |
266 | (sc = (struct llinfo_llc *)known_is->rt_llinfo) && | |
267 | (sc->lc_flags & SNPA_VALID)) { | |
268 | register struct sockaddr_dl *sdl = | |
269 | (struct sockaddr_dl *)(known_is->rt_gateway); | |
270 | found_snpa = LLADDR(sdl); | |
271 | addrlen = sdl->sdl_alen; | |
272 | } else if (ifp->if_flags & IFF_BROADCAST) { | |
273 | /* | |
274 | * no IS, no match. Return "all es" multicast address for this | |
275 | * interface, as per Query Configuration Function (9542 sec 6.5) | |
276 | * | |
277 | * Note: there is a potential problem here. If the destination | |
278 | * is on the subnet and it does not respond with a ESH, but | |
279 | * does send back a TP CC, a connection could be established | |
280 | * where we always transmit the CLNP packet to "all es" | |
600d71da | 281 | */ |
d910a5d6 KS |
282 | addrlen = ifp->if_addrlen; |
283 | found_snpa = (caddr_t)all_es_snpa; | |
284 | } else | |
285 | return (ENETUNREACH); | |
286 | bcopy(found_snpa, snpa, *snpa_len = addrlen); | |
600d71da | 287 | return (0); |
600d71da KS |
288 | } |
289 | ||
600d71da | 290 | |
600d71da KS |
291 | /* |
292 | * FUNCTION: snpac_free | |
293 | * | |
294 | * PURPOSE: free an entry in the iso address map table | |
295 | * | |
296 | * RETURNS: nothing | |
297 | * | |
298 | * SIDE EFFECTS: | |
299 | * | |
300 | * NOTES: If there is a route entry associated with cache | |
301 | * entry, then delete that as well | |
302 | */ | |
d910a5d6 KS |
303 | snpac_free(lc) |
304 | register struct llinfo_llc *lc; /* entry to free */ | |
600d71da | 305 | { |
d910a5d6 | 306 | register struct rtentry *rt = lc->lc_rt; |
a50e2bc0 | 307 | register struct iso_addr *r; |
600d71da | 308 | |
d910a5d6 KS |
309 | if (known_is == rt) |
310 | known_is = 0; | |
311 | if (rt && (rt->rt_flags & RTF_UP) && | |
312 | (rt->rt_flags & (RTF_DYNAMIC | RTF_MODIFIED))) { | |
a50e2bc0 KS |
313 | RTFREE(rt); |
314 | rtrequest(RTM_DELETE, rt_key(rt), rt->rt_gateway, rt_mask(rt), | |
315 | rt->rt_flags, (struct rtentry **)0); | |
a50e2bc0 | 316 | RTFREE(rt); |
600d71da | 317 | } |
600d71da KS |
318 | } |
319 | ||
320 | /* | |
321 | * FUNCTION: snpac_add | |
322 | * | |
323 | * PURPOSE: Add an entry to the snpa cache | |
324 | * | |
325 | * RETURNS: | |
326 | * | |
327 | * SIDE EFFECTS: | |
328 | * | |
329 | * NOTES: If entry already exists, then update holding time. | |
330 | */ | |
c2bb180a | 331 | snpac_add(ifp, nsap, snpa, type, ht, nsellength) |
600d71da KS |
332 | struct ifnet *ifp; /* interface info is related to */ |
333 | struct iso_addr *nsap; /* nsap to add */ | |
334 | caddr_t snpa; /* translation */ | |
600d71da | 335 | char type; /* SNPA_IS or SNPA_ES */ |
a50e2bc0 | 336 | u_short ht; /* holding time (in seconds) */ |
c2bb180a | 337 | int nsellength; /* nsaps may differ only in trailing bytes */ |
600d71da | 338 | { |
d910a5d6 | 339 | register struct llinfo_llc *lc; |
c2bb180a KS |
340 | register struct rtentry *rt; |
341 | struct rtentry *mrt = 0; | |
d910a5d6 KS |
342 | register struct iso_addr *r; /* for zap_isoaddr macro */ |
343 | int snpalen = min(ifp->if_addrlen, MAX_SNPALEN); | |
344 | int new_entry = 0, index = ifp->if_index; | |
345 | ||
c2bb180a KS |
346 | IFDEBUG(D_SNPA) |
347 | printf("snpac_add(%x, %x, %x, %x, %x, %x)\n", | |
348 | ifp, nsap, snpa, type, ht, nsellength); | |
349 | ENDDEBUG | |
d910a5d6 KS |
350 | zap_isoaddr(dst, nsap); |
351 | rt = rtalloc1(S(dst), 0); | |
c2bb180a KS |
352 | IFDEBUG(D_SNPA) |
353 | printf("snpac_add: rtalloc1 returns %x\n", rt); | |
354 | ENDDEBUG | |
d910a5d6 | 355 | if (rt == 0) { |
c2bb180a KS |
356 | struct sockaddr *netmask; |
357 | int flags; | |
358 | add: | |
359 | if (nsellength) { | |
360 | netmask = S(msk); flags = RTF_UP; | |
361 | snpac_fixdstandmask(nsellength); | |
362 | } else { | |
363 | netmask = 0; flags = RTF_UP | RTF_HOST; | |
364 | } | |
d910a5d6 KS |
365 | new_entry = 1; |
366 | zap_linkaddr((>e_dl), snpa, snpalen, index); | |
c2bb180a KS |
367 | if (rtrequest(RTM_ADD, S(dst), S(gte_dl), netmask, flags, &mrt) || |
368 | mrt == 0) | |
d910a5d6 | 369 | return (0); |
c2bb180a KS |
370 | rt = mrt; |
371 | rt->rt_refcnt--; | |
d910a5d6 KS |
372 | } else { |
373 | register struct sockaddr_dl *sdl = (struct sockaddr_dl *)rt->rt_gateway; | |
c2bb180a KS |
374 | rt->rt_refcnt--; |
375 | if ((rt->rt_flags & RTF_LLINFO) == 0) | |
376 | goto add; | |
377 | if (nsellength && (rt->rt_flags & RTF_HOST)) { | |
378 | if (rt->rt_refcnt == 0) { | |
379 | rtrequest(RTM_DELETE, S(dst), (struct sockaddr *)0, | |
380 | (struct sockaddr *)0, 0, (struct rtentry *)0); | |
381 | rt = 0; | |
382 | goto add; | |
383 | } else { | |
384 | static struct iso_addr nsap2; register char *cp; | |
385 | nsap2 = *nsap; | |
386 | cp = nsap2.isoa_genaddr + nsap->isoa_len - nsellength; | |
387 | while (cp < (char *)(1 + &nsap2)) | |
388 | *cp++ = 0; | |
389 | (void) snpac_add(ifp, &nsap2, snpa, type, ht, nsellength); | |
390 | } | |
391 | } | |
d910a5d6 KS |
392 | if (sdl->sdl_family != AF_LINK || sdl->sdl_alen == 0) { |
393 | int old_sdl_len = sdl->sdl_len; | |
c2bb180a KS |
394 | if (old_sdl_len < sizeof(*sdl)) { |
395 | log("snpac_add: cant make room for lladdr\n"); | |
d910a5d6 | 396 | return (0); |
c2bb180a | 397 | } |
d910a5d6 KS |
398 | zap_linkaddr(sdl, snpa, snpalen, index); |
399 | sdl->sdl_len = old_sdl_len; | |
400 | new_entry = 1; | |
401 | } | |
600d71da | 402 | } |
c2bb180a KS |
403 | if ((lc = (struct llinfo_llc *)rt->rt_llinfo) == 0) |
404 | panic("snpac_rtrequest"); | |
405 | rt->rt_idle = ht; | |
d910a5d6 | 406 | lc->lc_flags = SNPA_VALID | type; |
600d71da | 407 | if (type & SNPA_IS) |
d910a5d6 | 408 | snpac_logdefis(rt); |
c2bb180a KS |
409 | return (new_entry); |
410 | } | |
411 | ||
412 | static snpac_fixdstandmask(nsellength) | |
413 | { | |
414 | register char *cp = msk.siso_data, *cplim; | |
415 | ||
416 | cplim = cp + (dst.siso_nlen -= nsellength); | |
417 | msk.siso_len = cplim - (char *)&msk; | |
418 | msk.siso_nlen = 0; | |
419 | while (cp < cplim) | |
420 | *cp++ = -1; | |
421 | while (cp < (char *)msk.siso_pad) | |
422 | *cp++ = 0; | |
423 | for (cp = dst.siso_data + dst.siso_nlen; cp < (char *)dst.siso_pad; ) | |
424 | *cp++ = 0; | |
600d71da KS |
425 | } |
426 | ||
427 | /* | |
428 | * FUNCTION: snpac_ioctl | |
429 | * | |
600d71da KS |
430 | * PURPOSE: Set/Get the system type and esis parameters |
431 | * | |
432 | * RETURNS: 0 on success, or unix error code | |
433 | * | |
434 | * SIDE EFFECTS: | |
435 | * | |
436 | * NOTES: | |
437 | */ | |
d910a5d6 | 438 | snpac_ioctl (cmd, data) |
600d71da KS |
439 | int cmd; /* ioctl to process */ |
440 | caddr_t data; /* data for the cmd */ | |
441 | { | |
442 | register struct systype_req *rq = (struct systype_req *)data; | |
600d71da | 443 | |
c2bb180a | 444 | IFDEBUG(D_IOCTL) |
600d71da | 445 | if (cmd == SIOCSSTYPE) |
d910a5d6 | 446 | printf("snpac_ioctl: cmd set, type x%x, ht %d, ct %d\n", |
600d71da KS |
447 | rq->sr_type, rq->sr_holdt, rq->sr_configt); |
448 | else | |
d910a5d6 | 449 | printf("snpac_ioctl: cmd get\n"); |
600d71da KS |
450 | ENDDEBUG |
451 | ||
452 | if (cmd == SIOCSSTYPE) { | |
849cbd39 | 453 | if (suser(u.u_cred, &u.u_acflag)) |
600d71da KS |
454 | return(EACCES); |
455 | if ((rq->sr_type & (SNPA_ES|SNPA_IS)) == (SNPA_ES|SNPA_IS)) | |
456 | return(EINVAL); | |
457 | if (rq->sr_type & SNPA_ES) { | |
458 | iso_systype = SNPA_ES; | |
459 | } else if (rq->sr_type & SNPA_IS) { | |
460 | iso_systype = SNPA_IS; | |
461 | } else { | |
462 | return(EINVAL); | |
463 | } | |
464 | esis_holding_time = rq->sr_holdt; | |
465 | esis_config_time = rq->sr_configt; | |
d12b96b5 KS |
466 | if (esis_esconfig_time != rq->sr_esconfigt) { |
467 | untimeout(esis_config, (caddr_t)0); | |
468 | esis_esconfig_time = rq->sr_esconfigt; | |
469 | esis_config(); | |
470 | } | |
600d71da KS |
471 | } else if (cmd == SIOCGSTYPE) { |
472 | rq->sr_type = iso_systype; | |
473 | rq->sr_holdt = esis_holding_time; | |
474 | rq->sr_configt = esis_config_time; | |
d12b96b5 | 475 | rq->sr_esconfigt = esis_esconfig_time; |
600d71da | 476 | } else { |
d910a5d6 | 477 | return (EINVAL); |
600d71da | 478 | } |
d910a5d6 | 479 | return (0); |
600d71da KS |
480 | } |
481 | ||
482 | /* | |
483 | * FUNCTION: snpac_logdefis | |
484 | * | |
485 | * PURPOSE: Mark the IS passed as the default IS | |
486 | * | |
487 | * RETURNS: nothing | |
488 | * | |
489 | * SIDE EFFECTS: | |
490 | * | |
491 | * NOTES: | |
492 | */ | |
493 | snpac_logdefis(sc) | |
d910a5d6 | 494 | register struct rtentry *sc; |
600d71da | 495 | { |
a50e2bc0 | 496 | register struct iso_addr *r; |
d910a5d6 | 497 | register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sc->rt_gateway; |
a50e2bc0 | 498 | register struct rtentry *rt = rtalloc1((struct sockaddr *)&zsi, 0); |
d910a5d6 KS |
499 | |
500 | zap_linkaddr((>e_dl), LLADDR(sdl), sdl->sdl_alen, sdl->sdl_index); | |
a50e2bc0 KS |
501 | if (known_is == 0) |
502 | known_is = sc; | |
503 | if (known_is != sc) { | |
d910a5d6 | 504 | rtfree(known_is); |
a50e2bc0 KS |
505 | known_is = sc; |
506 | } | |
507 | if (rt == 0) { | |
d910a5d6 KS |
508 | rtrequest(RTM_ADD, S(zsi), S(gte_dl), S(zmk), |
509 | RTF_DYNAMIC|RTF_GATEWAY|RTF_CLONING, 0); | |
a50e2bc0 KS |
510 | return; |
511 | } | |
c2bb180a | 512 | rt->rt_refcnt--; |
a50e2bc0 | 513 | if (rt->rt_flags & (RTF_DYNAMIC | RTF_MODIFIED)) { |
d910a5d6 | 514 | *((struct sockaddr_dl *)rt->rt_gateway) = gte_dl; |
600d71da | 515 | } |
600d71da KS |
516 | } |
517 | ||
518 | /* | |
519 | * FUNCTION: snpac_age | |
520 | * | |
521 | * PURPOSE: Time out snpac entries | |
522 | * | |
523 | * RETURNS: | |
524 | * | |
525 | * SIDE EFFECTS: | |
526 | * | |
527 | * NOTES: When encountering an entry for the first time, snpac_age | |
528 | * may delete up to SNPAC_AGE too many seconds. Ie. | |
529 | * if the entry is added a moment before snpac_age is | |
530 | * called, the entry will immediately have SNPAC_AGE | |
531 | * seconds taken off the holding time, even though | |
532 | * it has only been held a brief moment. | |
533 | * | |
534 | * The proper way to do this is set an expiry timeval | |
535 | * equal to current time + holding time. Then snpac_age | |
536 | * would time out entries where expiry date is older | |
537 | * than the current time. | |
538 | */ | |
539 | snpac_age() | |
540 | { | |
d910a5d6 | 541 | register struct llinfo_llc *lc; |
600d71da KS |
542 | |
543 | timeout(snpac_age, (caddr_t)0, SNPAC_AGE * hz); | |
544 | ||
d910a5d6 KS |
545 | for (lc = llinfo_llc.lc_next; lc != & llinfo_llc; lc = lc->lc_next) { |
546 | if (((lc->lc_flags & SNPA_PERM) == 0) && (lc->lc_flags & SNPA_VALID)) { | |
c2bb180a KS |
547 | lc->lc_rt->rt_idle -= SNPAC_AGE; |
548 | if (lc->lc_rt->rt_idle > 0) | |
600d71da KS |
549 | continue; |
550 | else | |
d910a5d6 | 551 | snpac_free(lc); |
600d71da KS |
552 | } |
553 | } | |
554 | } | |
555 | ||
556 | /* | |
557 | * FUNCTION: snpac_ownmulti | |
558 | * | |
559 | * PURPOSE: Determine if the snpa address is a multicast address | |
560 | * of the same type as the system. | |
561 | * | |
562 | * RETURNS: true or false | |
563 | * | |
564 | * SIDE EFFECTS: | |
565 | * | |
566 | * NOTES: Used by interface drivers when not in eavesdrop mode | |
567 | * as interm kludge until | |
568 | * real multicast addresses can be configured | |
569 | */ | |
570 | snpac_ownmulti(snpa, len) | |
d910a5d6 KS |
571 | caddr_t snpa; |
572 | u_int len; | |
600d71da | 573 | { |
a50e2bc0 | 574 | return (((iso_systype & SNPA_ES) && |
d910a5d6 | 575 | (!bcmp(snpa, (caddr_t)all_es_snpa, len))) || |
a50e2bc0 | 576 | ((iso_systype & SNPA_IS) && |
d910a5d6 | 577 | (!bcmp(snpa, (caddr_t)all_is_snpa, len)))); |
600d71da KS |
578 | } |
579 | ||
580 | /* | |
581 | * FUNCTION: snpac_flushifp | |
582 | * | |
583 | * PURPOSE: Flush entries associated with specific ifp | |
584 | * | |
585 | * RETURNS: nothing | |
586 | * | |
587 | * SIDE EFFECTS: | |
588 | * | |
589 | * NOTES: | |
590 | */ | |
591 | snpac_flushifp(ifp) | |
592 | struct ifnet *ifp; | |
593 | { | |
d910a5d6 | 594 | register struct llinfo_llc *lc; |
600d71da | 595 | |
d910a5d6 KS |
596 | for (lc = llinfo_llc.lc_next; lc != & llinfo_llc; lc = lc->lc_next) { |
597 | if (lc->lc_rt->rt_ifp == ifp && (lc->lc_flags & SNPA_VALID)) | |
598 | snpac_free(lc); | |
600d71da KS |
599 | } |
600 | } | |
601 | ||
602 | /* | |
603 | * FUNCTION: snpac_rtrequest | |
604 | * | |
605 | * PURPOSE: Make a routing request | |
606 | * | |
607 | * RETURNS: nothing | |
608 | * | |
609 | * SIDE EFFECTS: | |
610 | * | |
611 | * NOTES: In the future, this should make a request of a user | |
612 | * level routing daemon. | |
613 | */ | |
a50e2bc0 | 614 | snpac_rtrequest(req, host, gateway, netmask, flags, ret_nrt) |
600d71da | 615 | int req; |
a50e2bc0 | 616 | struct iso_addr *host; |
600d71da | 617 | struct iso_addr *gateway; |
a50e2bc0 | 618 | struct iso_addr *netmask; |
600d71da | 619 | short flags; |
a50e2bc0 | 620 | struct rtentry **ret_nrt; |
600d71da | 621 | { |
a50e2bc0 | 622 | register struct iso_addr *r; |
600d71da KS |
623 | |
624 | IFDEBUG(D_SNPA) | |
625 | printf("snpac_rtrequest: "); | |
a50e2bc0 | 626 | if (req == RTM_ADD) |
600d71da | 627 | printf("add"); |
a50e2bc0 | 628 | else if (req == RTM_DELETE) |
600d71da KS |
629 | printf("delete"); |
630 | else | |
631 | printf("unknown command"); | |
a50e2bc0 | 632 | printf(" dst: %s\n", clnp_iso_addrp(host)); |
600d71da KS |
633 | printf("\tgateway: %s\n", clnp_iso_addrp(gateway)); |
634 | ENDDEBUG | |
635 | ||
600d71da | 636 | |
a50e2bc0 KS |
637 | zap_isoaddr(dst, host); |
638 | zap_isoaddr(gte, gateway); | |
c2bb180a KS |
639 | if (netmask) { |
640 | zap_isoaddr(msk, netmask); | |
641 | msk.siso_nlen = 0; | |
642 | msk.siso_len = msk.siso_pad - (u_char *)&msk; | |
643 | } | |
600d71da | 644 | |
a50e2bc0 KS |
645 | rtrequest(req, S(dst), S(gte), (netmask ? S(msk) : (struct sockaddr *)0), |
646 | flags, ret_nrt); | |
647 | } | |
600d71da KS |
648 | |
649 | /* | |
650 | * FUNCTION: snpac_addrt | |
651 | * | |
652 | * PURPOSE: Associate a routing entry with an snpac entry | |
653 | * | |
654 | * RETURNS: nothing | |
655 | * | |
656 | * SIDE EFFECTS: | |
657 | * | |
658 | * NOTES: If a cache entry exists for gateway, then | |
659 | * make a routing entry (host, gateway) and associate | |
660 | * with gateway. | |
661 | * | |
662 | * If a route already exists and is different, first delete | |
663 | * it. | |
664 | * | |
665 | * This could be made more efficient by checking | |
666 | * the existing route before adding a new one. | |
667 | */ | |
af8f5eff KS |
668 | snpac_addrt(ifp, host, gateway, netmask) |
669 | struct ifnet *ifp; | |
670 | struct iso_addr *host, *gateway, *netmask; | |
600d71da | 671 | { |
a50e2bc0 | 672 | register struct iso_addr *r; |
600d71da | 673 | |
d910a5d6 KS |
674 | zap_isoaddr(dst, host); |
675 | zap_isoaddr(gte, gateway); | |
d910a5d6 | 676 | if (netmask) { |
c2bb180a KS |
677 | zap_isoaddr(msk, netmask); |
678 | msk.siso_nlen = 0; | |
679 | msk.siso_len = msk.siso_pad - (u_char *)&msk; | |
d910a5d6 KS |
680 | rtredirect(S(dst), S(gte), S(msk), RTF_DONE, S(gte), 0); |
681 | } else | |
682 | rtredirect(S(dst), S(gte), (struct sockaddr *)0, | |
683 | RTF_DONE | RTF_HOST, S(gte), 0); | |
600d71da KS |
684 | } |
685 | #endif ISO |