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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 $ */ | |
dbed88af | 29 | /* @(#)iso_snpac.c 7.10 (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 }; | |
dbed88af KS |
109 | char all_l1is_snpa[] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x14}; |
110 | char all_l2is_snpa[] = {0x01, 0x80, 0xc2, 0x00, 0x00, 0x15}; | |
600d71da | 111 | |
d910a5d6 KS |
112 | union sockunion { |
113 | struct sockaddr_iso siso; | |
114 | struct sockaddr_dl sdl; | |
115 | struct sockaddr sa; | |
116 | }; | |
600d71da | 117 | |
d910a5d6 KS |
118 | /* |
119 | * FUNCTION: llc_rtrequest | |
120 | * | |
121 | * PURPOSE: Manage routing table entries specific to LLC for ISO. | |
122 | * | |
123 | * NOTES: This does a lot of obscure magic; | |
124 | */ | |
125 | llc_rtrequest(req, rt, sa) | |
126 | int req; | |
127 | register struct rtentry *rt; | |
128 | struct sockaddr *sa; | |
129 | { | |
130 | register union sockunion *gate = (union sockunion *)rt->rt_gateway; | |
131 | register struct llinfo_llc *lc = (struct llinfo_llc *)rt->rt_llinfo, *lc2; | |
132 | struct rtentry *rt2; | |
133 | struct ifnet *ifp = rt->rt_ifp; | |
134 | int addrlen = ifp->if_addrlen; | |
c2bb180a | 135 | static struct rtentry *recursing = 0; |
d910a5d6 | 136 | |
c2bb180a KS |
137 | IFDEBUG (D_SNPA) |
138 | printf("llc_rtrequest(%d, %x, %x)\n", req, rt, sa); | |
139 | ENDDEBUG | |
140 | if (rt->rt_flags & RTF_GATEWAY) { | |
141 | if (recursing) { | |
142 | log("llc_rtrequest: gateway route points to same type %x %x\n", | |
143 | recursing, rt); | |
144 | } else switch (req) { | |
145 | case RTM_RESOLVE: | |
146 | case RTM_ADD: | |
147 | recursing = rt; | |
148 | rt->rt_llinfo = (caddr_t)rtalloc1(&gate->sa, 1); | |
149 | recursing = 0; | |
150 | return; | |
151 | ||
152 | case RTM_DELETE: | |
153 | if (lc) | |
154 | RTFREE((struct rtentry *)lc); | |
155 | rt->rt_llinfo = 0; | |
d910a5d6 | 156 | } |
c2bb180a | 157 | } else switch (req) { |
d910a5d6 | 158 | case RTM_ADD: |
c2bb180a KS |
159 | /* |
160 | * Case 1: This route may come from a route to iface with mask | |
161 | * or from a default route. | |
162 | */ | |
d910a5d6 | 163 | if (rt->rt_flags & RTF_CLONING) { |
c2bb180a KS |
164 | register struct ifaddr *ifa; |
165 | register struct sockaddr *sa; | |
166 | for (ifa = ifp->if_addrlist; ifa; ifa->ifa_next) | |
167 | if ((sa = ifa->ifa_addr)->sa_family == AF_LINK) { | |
168 | if (sa->sa_len > gate->sa.sa_len) | |
169 | log("llc_rtrequest: cloning address too small\n"); | |
170 | else { | |
171 | Bcopy(sa, gate, gate->sa.sa_len); | |
172 | gate->sdl.sdl_alen = 0; | |
173 | } | |
174 | return; | |
d910a5d6 | 175 | } |
c2bb180a KS |
176 | if (ifa == 0) |
177 | log("llc_rtrequest: can't find LL ifaddr for iface\n"); | |
178 | return; | |
179 | } | |
180 | /* FALLTHROUGH */ | |
181 | case RTM_RESOLVE: | |
182 | /* | |
183 | * Case 2: This route may come from cloning, or a manual route | |
184 | * add with a LL address. | |
185 | */ | |
186 | if (gate->sdl.sdl_family != AF_LINK) { | |
187 | log("llc_rtrequest: got non-link non-gateway route\n"); | |
188 | return; | |
d910a5d6 | 189 | } |
c2bb180a KS |
190 | if (lc != 0) |
191 | log("llc_rtrequest: losing old rt_llinfo\n"); | |
192 | R_Malloc(lc, struct llinfo_llc *, sizeof (*lc)); | |
193 | rt->rt_llinfo = (caddr_t)lc; | |
194 | if (lc == 0) { | |
195 | log("llc_rtrequest: malloc failed\n"); | |
196 | return; | |
197 | } | |
198 | Bzero(lc, sizeof(*lc)); | |
199 | lc->lc_rt = rt; | |
200 | rt->rt_flags |= RTF_LLINFO; | |
201 | insque(lc, &llinfo_llc); | |
202 | if (gate->sdl.sdl_alen == sizeof(struct esis_req) + addrlen) { | |
203 | gate->sdl.sdl_alen -= sizeof(struct esis_req); | |
204 | bcopy(addrlen + LLADDR(&gate->sdl), | |
205 | (caddr_t)&lc->lc_er, sizeof(lc->lc_er)); | |
206 | } else if (gate->sdl.sdl_alen == addrlen) | |
207 | lc->lc_flags = (SNPA_ES | SNPA_VALID | SNPA_PERM); | |
d910a5d6 KS |
208 | break; |
209 | case RTM_DELETE: | |
c2bb180a KS |
210 | if (lc == 0 || (rt->rt_flags & RTF_CLONING)) |
211 | return; | |
212 | remque(lc); | |
213 | Free(lc); | |
214 | rt->rt_llinfo = 0; | |
215 | rt->rt_flags &= ~RTF_LLINFO; | |
d910a5d6 KS |
216 | break; |
217 | } | |
218 | } | |
600d71da KS |
219 | /* |
220 | * FUNCTION: iso_snparesolve | |
221 | * | |
222 | * PURPOSE: Resolve an iso address into snpa address | |
223 | * | |
224 | * RETURNS: 0 if addr is resolved | |
225 | * errno if addr is unknown | |
226 | * | |
227 | * SIDE EFFECTS: | |
228 | * | |
d910a5d6 KS |
229 | * NOTES: Now that we have folded the snpa cache into the routing |
230 | * table, we know there is no snpa address known for this | |
231 | * destination. If we know of a default IS, then the address | |
232 | * of the IS is returned. If no IS is known, then return the | |
233 | * multi-cast address for "all ES" for this interface. | |
600d71da KS |
234 | * |
235 | * NB: the last case described above constitutes the | |
236 | * query configuration function 9542, sec 6.5 | |
237 | * A mechanism is needed to prevent this function from | |
238 | * being invoked if the system is an IS. | |
239 | */ | |
a50e2bc0 | 240 | iso_snparesolve(ifp, dest, snpa, snpa_len) |
d910a5d6 KS |
241 | struct ifnet *ifp; /* outgoing interface */ |
242 | struct sockaddr_iso *dest; /* destination */ | |
243 | caddr_t snpa; /* RESULT: snpa to be used */ | |
244 | int *snpa_len; /* RESULT: length of snpa */ | |
600d71da | 245 | { |
d910a5d6 KS |
246 | struct llinfo_llc *sc; /* ptr to snpa table entry */ |
247 | caddr_t found_snpa; | |
248 | int addrlen; | |
600d71da KS |
249 | |
250 | /* | |
251 | * This hack allows us to send esis packets that have the destination snpa | |
252 | * addresss embedded in the destination nsap address | |
253 | */ | |
d910a5d6 | 254 | if (dest->siso_data[0] == AFI_SNA) { |
600d71da KS |
255 | /* |
256 | * This is a subnetwork address. Return it immediately | |
257 | */ | |
258 | IFDEBUG(D_SNPA) | |
259 | printf("iso_snparesolve: return SN address\n"); | |
260 | ENDDEBUG | |
d910a5d6 KS |
261 | addrlen = dest->siso_nlen - 1; /* subtract size of AFI */ |
262 | found_snpa = (caddr_t) dest->siso_data + 1; | |
600d71da | 263 | /* |
d910a5d6 KS |
264 | * If we are an IS, we can't do much with the packet; |
265 | * Check if we know about an IS. | |
600d71da | 266 | */ |
d910a5d6 KS |
267 | } else if (iso_systype != SNPA_IS && known_is != 0 && |
268 | (sc = (struct llinfo_llc *)known_is->rt_llinfo) && | |
269 | (sc->lc_flags & SNPA_VALID)) { | |
270 | register struct sockaddr_dl *sdl = | |
271 | (struct sockaddr_dl *)(known_is->rt_gateway); | |
272 | found_snpa = LLADDR(sdl); | |
273 | addrlen = sdl->sdl_alen; | |
274 | } else if (ifp->if_flags & IFF_BROADCAST) { | |
275 | /* | |
276 | * no IS, no match. Return "all es" multicast address for this | |
277 | * interface, as per Query Configuration Function (9542 sec 6.5) | |
278 | * | |
279 | * Note: there is a potential problem here. If the destination | |
280 | * is on the subnet and it does not respond with a ESH, but | |
281 | * does send back a TP CC, a connection could be established | |
282 | * where we always transmit the CLNP packet to "all es" | |
600d71da | 283 | */ |
d910a5d6 KS |
284 | addrlen = ifp->if_addrlen; |
285 | found_snpa = (caddr_t)all_es_snpa; | |
286 | } else | |
287 | return (ENETUNREACH); | |
288 | bcopy(found_snpa, snpa, *snpa_len = addrlen); | |
600d71da | 289 | return (0); |
600d71da KS |
290 | } |
291 | ||
600d71da | 292 | |
600d71da KS |
293 | /* |
294 | * FUNCTION: snpac_free | |
295 | * | |
296 | * PURPOSE: free an entry in the iso address map table | |
297 | * | |
298 | * RETURNS: nothing | |
299 | * | |
300 | * SIDE EFFECTS: | |
301 | * | |
302 | * NOTES: If there is a route entry associated with cache | |
303 | * entry, then delete that as well | |
304 | */ | |
d910a5d6 KS |
305 | snpac_free(lc) |
306 | register struct llinfo_llc *lc; /* entry to free */ | |
600d71da | 307 | { |
d910a5d6 | 308 | register struct rtentry *rt = lc->lc_rt; |
a50e2bc0 | 309 | register struct iso_addr *r; |
600d71da | 310 | |
d910a5d6 KS |
311 | if (known_is == rt) |
312 | known_is = 0; | |
313 | if (rt && (rt->rt_flags & RTF_UP) && | |
314 | (rt->rt_flags & (RTF_DYNAMIC | RTF_MODIFIED))) { | |
a50e2bc0 KS |
315 | RTFREE(rt); |
316 | rtrequest(RTM_DELETE, rt_key(rt), rt->rt_gateway, rt_mask(rt), | |
317 | rt->rt_flags, (struct rtentry **)0); | |
a50e2bc0 | 318 | RTFREE(rt); |
600d71da | 319 | } |
600d71da KS |
320 | } |
321 | ||
322 | /* | |
323 | * FUNCTION: snpac_add | |
324 | * | |
325 | * PURPOSE: Add an entry to the snpa cache | |
326 | * | |
327 | * RETURNS: | |
328 | * | |
329 | * SIDE EFFECTS: | |
330 | * | |
331 | * NOTES: If entry already exists, then update holding time. | |
332 | */ | |
c2bb180a | 333 | snpac_add(ifp, nsap, snpa, type, ht, nsellength) |
600d71da KS |
334 | struct ifnet *ifp; /* interface info is related to */ |
335 | struct iso_addr *nsap; /* nsap to add */ | |
336 | caddr_t snpa; /* translation */ | |
600d71da | 337 | char type; /* SNPA_IS or SNPA_ES */ |
a50e2bc0 | 338 | u_short ht; /* holding time (in seconds) */ |
c2bb180a | 339 | int nsellength; /* nsaps may differ only in trailing bytes */ |
600d71da | 340 | { |
d910a5d6 | 341 | register struct llinfo_llc *lc; |
c2bb180a KS |
342 | register struct rtentry *rt; |
343 | struct rtentry *mrt = 0; | |
d910a5d6 KS |
344 | register struct iso_addr *r; /* for zap_isoaddr macro */ |
345 | int snpalen = min(ifp->if_addrlen, MAX_SNPALEN); | |
346 | int new_entry = 0, index = ifp->if_index; | |
347 | ||
c2bb180a KS |
348 | IFDEBUG(D_SNPA) |
349 | printf("snpac_add(%x, %x, %x, %x, %x, %x)\n", | |
350 | ifp, nsap, snpa, type, ht, nsellength); | |
351 | ENDDEBUG | |
d910a5d6 KS |
352 | zap_isoaddr(dst, nsap); |
353 | rt = rtalloc1(S(dst), 0); | |
c2bb180a KS |
354 | IFDEBUG(D_SNPA) |
355 | printf("snpac_add: rtalloc1 returns %x\n", rt); | |
356 | ENDDEBUG | |
d910a5d6 | 357 | if (rt == 0) { |
c2bb180a KS |
358 | struct sockaddr *netmask; |
359 | int flags; | |
360 | add: | |
361 | if (nsellength) { | |
362 | netmask = S(msk); flags = RTF_UP; | |
363 | snpac_fixdstandmask(nsellength); | |
364 | } else { | |
365 | netmask = 0; flags = RTF_UP | RTF_HOST; | |
366 | } | |
d910a5d6 KS |
367 | new_entry = 1; |
368 | zap_linkaddr((>e_dl), snpa, snpalen, index); | |
c2bb180a KS |
369 | if (rtrequest(RTM_ADD, S(dst), S(gte_dl), netmask, flags, &mrt) || |
370 | mrt == 0) | |
d910a5d6 | 371 | return (0); |
c2bb180a KS |
372 | rt = mrt; |
373 | rt->rt_refcnt--; | |
d910a5d6 KS |
374 | } else { |
375 | register struct sockaddr_dl *sdl = (struct sockaddr_dl *)rt->rt_gateway; | |
c2bb180a KS |
376 | rt->rt_refcnt--; |
377 | if ((rt->rt_flags & RTF_LLINFO) == 0) | |
378 | goto add; | |
379 | if (nsellength && (rt->rt_flags & RTF_HOST)) { | |
380 | if (rt->rt_refcnt == 0) { | |
381 | rtrequest(RTM_DELETE, S(dst), (struct sockaddr *)0, | |
382 | (struct sockaddr *)0, 0, (struct rtentry *)0); | |
383 | rt = 0; | |
384 | goto add; | |
385 | } else { | |
386 | static struct iso_addr nsap2; register char *cp; | |
387 | nsap2 = *nsap; | |
388 | cp = nsap2.isoa_genaddr + nsap->isoa_len - nsellength; | |
389 | while (cp < (char *)(1 + &nsap2)) | |
390 | *cp++ = 0; | |
391 | (void) snpac_add(ifp, &nsap2, snpa, type, ht, nsellength); | |
392 | } | |
393 | } | |
d910a5d6 KS |
394 | if (sdl->sdl_family != AF_LINK || sdl->sdl_alen == 0) { |
395 | int old_sdl_len = sdl->sdl_len; | |
c2bb180a KS |
396 | if (old_sdl_len < sizeof(*sdl)) { |
397 | log("snpac_add: cant make room for lladdr\n"); | |
d910a5d6 | 398 | return (0); |
c2bb180a | 399 | } |
d910a5d6 KS |
400 | zap_linkaddr(sdl, snpa, snpalen, index); |
401 | sdl->sdl_len = old_sdl_len; | |
402 | new_entry = 1; | |
403 | } | |
600d71da | 404 | } |
c2bb180a KS |
405 | if ((lc = (struct llinfo_llc *)rt->rt_llinfo) == 0) |
406 | panic("snpac_rtrequest"); | |
407 | rt->rt_idle = ht; | |
d910a5d6 | 408 | lc->lc_flags = SNPA_VALID | type; |
600d71da | 409 | if (type & SNPA_IS) |
d910a5d6 | 410 | snpac_logdefis(rt); |
c2bb180a KS |
411 | return (new_entry); |
412 | } | |
413 | ||
414 | static snpac_fixdstandmask(nsellength) | |
415 | { | |
416 | register char *cp = msk.siso_data, *cplim; | |
417 | ||
418 | cplim = cp + (dst.siso_nlen -= nsellength); | |
419 | msk.siso_len = cplim - (char *)&msk; | |
420 | msk.siso_nlen = 0; | |
421 | while (cp < cplim) | |
422 | *cp++ = -1; | |
423 | while (cp < (char *)msk.siso_pad) | |
424 | *cp++ = 0; | |
425 | for (cp = dst.siso_data + dst.siso_nlen; cp < (char *)dst.siso_pad; ) | |
426 | *cp++ = 0; | |
600d71da KS |
427 | } |
428 | ||
429 | /* | |
430 | * FUNCTION: snpac_ioctl | |
431 | * | |
600d71da KS |
432 | * PURPOSE: Set/Get the system type and esis parameters |
433 | * | |
434 | * RETURNS: 0 on success, or unix error code | |
435 | * | |
436 | * SIDE EFFECTS: | |
437 | * | |
438 | * NOTES: | |
439 | */ | |
d910a5d6 | 440 | snpac_ioctl (cmd, data) |
600d71da KS |
441 | int cmd; /* ioctl to process */ |
442 | caddr_t data; /* data for the cmd */ | |
443 | { | |
444 | register struct systype_req *rq = (struct systype_req *)data; | |
600d71da | 445 | |
c2bb180a | 446 | IFDEBUG(D_IOCTL) |
600d71da | 447 | if (cmd == SIOCSSTYPE) |
d910a5d6 | 448 | printf("snpac_ioctl: cmd set, type x%x, ht %d, ct %d\n", |
600d71da KS |
449 | rq->sr_type, rq->sr_holdt, rq->sr_configt); |
450 | else | |
d910a5d6 | 451 | printf("snpac_ioctl: cmd get\n"); |
600d71da KS |
452 | ENDDEBUG |
453 | ||
454 | if (cmd == SIOCSSTYPE) { | |
849cbd39 | 455 | if (suser(u.u_cred, &u.u_acflag)) |
600d71da KS |
456 | return(EACCES); |
457 | if ((rq->sr_type & (SNPA_ES|SNPA_IS)) == (SNPA_ES|SNPA_IS)) | |
458 | return(EINVAL); | |
459 | if (rq->sr_type & SNPA_ES) { | |
460 | iso_systype = SNPA_ES; | |
461 | } else if (rq->sr_type & SNPA_IS) { | |
462 | iso_systype = SNPA_IS; | |
463 | } else { | |
464 | return(EINVAL); | |
465 | } | |
466 | esis_holding_time = rq->sr_holdt; | |
467 | esis_config_time = rq->sr_configt; | |
d12b96b5 KS |
468 | if (esis_esconfig_time != rq->sr_esconfigt) { |
469 | untimeout(esis_config, (caddr_t)0); | |
470 | esis_esconfig_time = rq->sr_esconfigt; | |
471 | esis_config(); | |
472 | } | |
600d71da KS |
473 | } else if (cmd == SIOCGSTYPE) { |
474 | rq->sr_type = iso_systype; | |
475 | rq->sr_holdt = esis_holding_time; | |
476 | rq->sr_configt = esis_config_time; | |
d12b96b5 | 477 | rq->sr_esconfigt = esis_esconfig_time; |
600d71da | 478 | } else { |
d910a5d6 | 479 | return (EINVAL); |
600d71da | 480 | } |
d910a5d6 | 481 | return (0); |
600d71da KS |
482 | } |
483 | ||
484 | /* | |
485 | * FUNCTION: snpac_logdefis | |
486 | * | |
487 | * PURPOSE: Mark the IS passed as the default IS | |
488 | * | |
489 | * RETURNS: nothing | |
490 | * | |
491 | * SIDE EFFECTS: | |
492 | * | |
493 | * NOTES: | |
494 | */ | |
495 | snpac_logdefis(sc) | |
d910a5d6 | 496 | register struct rtentry *sc; |
600d71da | 497 | { |
a50e2bc0 | 498 | register struct iso_addr *r; |
d910a5d6 | 499 | register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sc->rt_gateway; |
a50e2bc0 | 500 | register struct rtentry *rt = rtalloc1((struct sockaddr *)&zsi, 0); |
d910a5d6 KS |
501 | |
502 | zap_linkaddr((>e_dl), LLADDR(sdl), sdl->sdl_alen, sdl->sdl_index); | |
a50e2bc0 KS |
503 | if (known_is == 0) |
504 | known_is = sc; | |
505 | if (known_is != sc) { | |
d910a5d6 | 506 | rtfree(known_is); |
a50e2bc0 KS |
507 | known_is = sc; |
508 | } | |
509 | if (rt == 0) { | |
d910a5d6 KS |
510 | rtrequest(RTM_ADD, S(zsi), S(gte_dl), S(zmk), |
511 | RTF_DYNAMIC|RTF_GATEWAY|RTF_CLONING, 0); | |
a50e2bc0 KS |
512 | return; |
513 | } | |
c2bb180a | 514 | rt->rt_refcnt--; |
a50e2bc0 | 515 | if (rt->rt_flags & (RTF_DYNAMIC | RTF_MODIFIED)) { |
d910a5d6 | 516 | *((struct sockaddr_dl *)rt->rt_gateway) = gte_dl; |
600d71da | 517 | } |
600d71da KS |
518 | } |
519 | ||
520 | /* | |
521 | * FUNCTION: snpac_age | |
522 | * | |
523 | * PURPOSE: Time out snpac entries | |
524 | * | |
525 | * RETURNS: | |
526 | * | |
527 | * SIDE EFFECTS: | |
528 | * | |
529 | * NOTES: When encountering an entry for the first time, snpac_age | |
530 | * may delete up to SNPAC_AGE too many seconds. Ie. | |
531 | * if the entry is added a moment before snpac_age is | |
532 | * called, the entry will immediately have SNPAC_AGE | |
533 | * seconds taken off the holding time, even though | |
534 | * it has only been held a brief moment. | |
535 | * | |
536 | * The proper way to do this is set an expiry timeval | |
537 | * equal to current time + holding time. Then snpac_age | |
538 | * would time out entries where expiry date is older | |
539 | * than the current time. | |
540 | */ | |
541 | snpac_age() | |
542 | { | |
d910a5d6 | 543 | register struct llinfo_llc *lc; |
600d71da KS |
544 | |
545 | timeout(snpac_age, (caddr_t)0, SNPAC_AGE * hz); | |
546 | ||
d910a5d6 KS |
547 | for (lc = llinfo_llc.lc_next; lc != & llinfo_llc; lc = lc->lc_next) { |
548 | if (((lc->lc_flags & SNPA_PERM) == 0) && (lc->lc_flags & SNPA_VALID)) { | |
c2bb180a KS |
549 | lc->lc_rt->rt_idle -= SNPAC_AGE; |
550 | if (lc->lc_rt->rt_idle > 0) | |
600d71da KS |
551 | continue; |
552 | else | |
d910a5d6 | 553 | snpac_free(lc); |
600d71da KS |
554 | } |
555 | } | |
556 | } | |
557 | ||
558 | /* | |
559 | * FUNCTION: snpac_ownmulti | |
560 | * | |
561 | * PURPOSE: Determine if the snpa address is a multicast address | |
562 | * of the same type as the system. | |
563 | * | |
564 | * RETURNS: true or false | |
565 | * | |
566 | * SIDE EFFECTS: | |
567 | * | |
568 | * NOTES: Used by interface drivers when not in eavesdrop mode | |
569 | * as interm kludge until | |
570 | * real multicast addresses can be configured | |
571 | */ | |
572 | snpac_ownmulti(snpa, len) | |
d910a5d6 KS |
573 | caddr_t snpa; |
574 | u_int len; | |
600d71da | 575 | { |
a50e2bc0 | 576 | return (((iso_systype & SNPA_ES) && |
d910a5d6 | 577 | (!bcmp(snpa, (caddr_t)all_es_snpa, len))) || |
a50e2bc0 | 578 | ((iso_systype & SNPA_IS) && |
d910a5d6 | 579 | (!bcmp(snpa, (caddr_t)all_is_snpa, len)))); |
600d71da KS |
580 | } |
581 | ||
582 | /* | |
583 | * FUNCTION: snpac_flushifp | |
584 | * | |
585 | * PURPOSE: Flush entries associated with specific ifp | |
586 | * | |
587 | * RETURNS: nothing | |
588 | * | |
589 | * SIDE EFFECTS: | |
590 | * | |
591 | * NOTES: | |
592 | */ | |
593 | snpac_flushifp(ifp) | |
594 | struct ifnet *ifp; | |
595 | { | |
d910a5d6 | 596 | register struct llinfo_llc *lc; |
600d71da | 597 | |
d910a5d6 KS |
598 | for (lc = llinfo_llc.lc_next; lc != & llinfo_llc; lc = lc->lc_next) { |
599 | if (lc->lc_rt->rt_ifp == ifp && (lc->lc_flags & SNPA_VALID)) | |
600 | snpac_free(lc); | |
600d71da KS |
601 | } |
602 | } | |
603 | ||
604 | /* | |
605 | * FUNCTION: snpac_rtrequest | |
606 | * | |
607 | * PURPOSE: Make a routing request | |
608 | * | |
609 | * RETURNS: nothing | |
610 | * | |
611 | * SIDE EFFECTS: | |
612 | * | |
613 | * NOTES: In the future, this should make a request of a user | |
614 | * level routing daemon. | |
615 | */ | |
a50e2bc0 | 616 | snpac_rtrequest(req, host, gateway, netmask, flags, ret_nrt) |
600d71da | 617 | int req; |
a50e2bc0 | 618 | struct iso_addr *host; |
600d71da | 619 | struct iso_addr *gateway; |
a50e2bc0 | 620 | struct iso_addr *netmask; |
600d71da | 621 | short flags; |
a50e2bc0 | 622 | struct rtentry **ret_nrt; |
600d71da | 623 | { |
a50e2bc0 | 624 | register struct iso_addr *r; |
600d71da KS |
625 | |
626 | IFDEBUG(D_SNPA) | |
627 | printf("snpac_rtrequest: "); | |
a50e2bc0 | 628 | if (req == RTM_ADD) |
600d71da | 629 | printf("add"); |
a50e2bc0 | 630 | else if (req == RTM_DELETE) |
600d71da KS |
631 | printf("delete"); |
632 | else | |
633 | printf("unknown command"); | |
a50e2bc0 | 634 | printf(" dst: %s\n", clnp_iso_addrp(host)); |
600d71da KS |
635 | printf("\tgateway: %s\n", clnp_iso_addrp(gateway)); |
636 | ENDDEBUG | |
637 | ||
600d71da | 638 | |
a50e2bc0 KS |
639 | zap_isoaddr(dst, host); |
640 | zap_isoaddr(gte, gateway); | |
c2bb180a KS |
641 | if (netmask) { |
642 | zap_isoaddr(msk, netmask); | |
643 | msk.siso_nlen = 0; | |
644 | msk.siso_len = msk.siso_pad - (u_char *)&msk; | |
645 | } | |
600d71da | 646 | |
a50e2bc0 KS |
647 | rtrequest(req, S(dst), S(gte), (netmask ? S(msk) : (struct sockaddr *)0), |
648 | flags, ret_nrt); | |
649 | } | |
600d71da KS |
650 | |
651 | /* | |
652 | * FUNCTION: snpac_addrt | |
653 | * | |
654 | * PURPOSE: Associate a routing entry with an snpac entry | |
655 | * | |
656 | * RETURNS: nothing | |
657 | * | |
658 | * SIDE EFFECTS: | |
659 | * | |
660 | * NOTES: If a cache entry exists for gateway, then | |
661 | * make a routing entry (host, gateway) and associate | |
662 | * with gateway. | |
663 | * | |
664 | * If a route already exists and is different, first delete | |
665 | * it. | |
666 | * | |
667 | * This could be made more efficient by checking | |
668 | * the existing route before adding a new one. | |
669 | */ | |
af8f5eff KS |
670 | snpac_addrt(ifp, host, gateway, netmask) |
671 | struct ifnet *ifp; | |
672 | struct iso_addr *host, *gateway, *netmask; | |
600d71da | 673 | { |
a50e2bc0 | 674 | register struct iso_addr *r; |
600d71da | 675 | |
d910a5d6 KS |
676 | zap_isoaddr(dst, host); |
677 | zap_isoaddr(gte, gateway); | |
d910a5d6 | 678 | if (netmask) { |
c2bb180a KS |
679 | zap_isoaddr(msk, netmask); |
680 | msk.siso_nlen = 0; | |
681 | msk.siso_len = msk.siso_pad - (u_char *)&msk; | |
d910a5d6 KS |
682 | rtredirect(S(dst), S(gte), S(msk), RTF_DONE, S(gte), 0); |
683 | } else | |
684 | rtredirect(S(dst), S(gte), (struct sockaddr *)0, | |
685 | RTF_DONE | RTF_HOST, S(gte), 0); | |
600d71da KS |
686 | } |
687 | #endif ISO |