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Commit | Line | Data |
---|---|---|
4364b47e OF |
1 | /* |
2 | * BIRD -- OSPF | |
3 | * | |
f158bb71 | 4 | * (c) 1999--2004 Ondrej Filip <feela@network.cz> |
70945cb6 OZ |
5 | * (c) 2009--2014 Ondrej Zajicek <santiago@crfreenet.org> |
6 | * (c) 2009--2014 CZ.NIC z.s.p.o. | |
4364b47e OF |
7 | * |
8 | * Can be freely distributed and used under the terms of the GNU GPL. | |
9 | */ | |
10 | ||
11 | #include "ospf.h" | |
12 | ||
c3226991 | 13 | |
70945cb6 | 14 | struct ospf_dbdes2_packet |
c3226991 | 15 | { |
70945cb6 OZ |
16 | struct ospf_packet hdr; |
17 | union ospf_auth auth; | |
18 | ||
c3226991 OZ |
19 | u16 iface_mtu; |
20 | u8 options; | |
70945cb6 | 21 | u8 imms; /* I, M, MS bits */ |
c3226991 | 22 | u32 ddseq; |
c3226991 | 23 | |
70945cb6 OZ |
24 | struct ospf_lsa_header lsas[]; |
25 | }; | |
c3226991 | 26 | |
70945cb6 | 27 | struct ospf_dbdes3_packet |
c3226991 | 28 | { |
70945cb6 OZ |
29 | struct ospf_packet hdr; |
30 | ||
c3226991 OZ |
31 | u32 options; |
32 | u16 iface_mtu; | |
33 | u8 padding; | |
70945cb6 | 34 | u8 imms; /* I, M, MS bits */ |
c3226991 | 35 | u32 ddseq; |
70945cb6 OZ |
36 | |
37 | struct ospf_lsa_header lsas[]; | |
c3226991 OZ |
38 | }; |
39 | ||
c3226991 | 40 | |
70945cb6 OZ |
41 | static inline uint |
42 | ospf_dbdes_hdrlen(struct ospf_proto *p) | |
43 | { | |
44 | return ospf_is_v2(p) ? | |
45 | sizeof(struct ospf_dbdes2_packet) : sizeof(struct ospf_dbdes3_packet); | |
46 | } | |
47 | ||
48 | ||
49 | static void | |
50 | ospf_dbdes_body(struct ospf_proto *p, struct ospf_packet *pkt, | |
51 | struct ospf_lsa_header **body, uint *count) | |
52 | { | |
53 | uint plen = ntohs(pkt->length); | |
54 | uint hlen = ospf_dbdes_hdrlen(p); | |
55 | ||
56 | *body = ((void *) pkt) + hlen; | |
57 | *count = (plen - hlen) / sizeof(struct ospf_lsa_header); | |
58 | } | |
742029eb | 59 | |
70945cb6 OZ |
60 | static void |
61 | ospf_dump_dbdes(struct ospf_proto *p, struct ospf_packet *pkt) | |
8298d780 | 62 | { |
70945cb6 OZ |
63 | struct ospf_lsa_header *lsas; |
64 | uint i, lsa_count; | |
65 | u32 pkt_ddseq; | |
66 | u16 pkt_iface_mtu; | |
67 | u8 pkt_imms; | |
8298d780 | 68 | |
70945cb6 OZ |
69 | ASSERT(pkt->type == DBDES_P); |
70 | ospf_dump_common(p, pkt); | |
8298d780 | 71 | |
70945cb6 OZ |
72 | if (ospf_is_v2(p)) |
73 | { | |
74 | struct ospf_dbdes2_packet *ps = (void *) pkt; | |
75 | pkt_iface_mtu = ntohs(ps->iface_mtu); | |
76 | pkt_imms = ps->imms; | |
77 | pkt_ddseq = ntohl(ps->ddseq); | |
78 | } | |
79 | else /* OSPFv3 */ | |
80 | { | |
81 | struct ospf_dbdes3_packet *ps = (void *) pkt; | |
82 | pkt_iface_mtu = ntohs(ps->iface_mtu); | |
83 | pkt_imms = ps->imms; | |
84 | pkt_ddseq = ntohl(ps->ddseq); | |
85 | } | |
8298d780 | 86 | |
70945cb6 OZ |
87 | log(L_TRACE "%s: mtu %u", p->p.name, pkt_iface_mtu); |
88 | log(L_TRACE "%s: imms %s%s%s", p->p.name, | |
89 | (pkt_imms & DBDES_I) ? "I " : "", | |
90 | (pkt_imms & DBDES_M) ? "M " : "", | |
91 | (pkt_imms & DBDES_MS) ? "MS" : ""); | |
92 | log(L_TRACE "%s: ddseq %u", p->p.name, pkt_ddseq); | |
8298d780 | 93 | |
70945cb6 OZ |
94 | ospf_dbdes_body(p, pkt, &lsas, &lsa_count); |
95 | for (i = 0; i < lsa_count; i++) | |
96 | ospf_dump_lsahdr(p, lsas + i); | |
8298d780 OZ |
97 | } |
98 | ||
99 | ||
70945cb6 | 100 | static void |
f8fefde3 | 101 | ospf_prepare_dbdes(struct ospf_proto *p, struct ospf_neighbor *n) |
70945cb6 OZ |
102 | { |
103 | struct ospf_iface *ifa = n->ifa; | |
104 | struct ospf_packet *pkt; | |
105 | uint length; | |
106 | ||
107 | u16 iface_mtu = (ifa->type == OSPF_IT_VLINK) ? 0 : ifa->iface->mtu; | |
108 | ||
f8fefde3 | 109 | /* Update DBDES buffer */ |
70945cb6 OZ |
110 | if (n->ldd_bsize != ifa->tx_length) |
111 | { | |
112 | mb_free(n->ldd_buffer); | |
113 | n->ldd_buffer = mb_allocz(n->pool, ifa->tx_length); | |
114 | n->ldd_bsize = ifa->tx_length; | |
115 | } | |
116 | ||
117 | pkt = n->ldd_buffer; | |
118 | ospf_pkt_fill_hdr(ifa, pkt, DBDES_P); | |
119 | ||
120 | if (ospf_is_v2(p)) | |
121 | { | |
122 | struct ospf_dbdes2_packet *ps = (void *) pkt; | |
123 | ps->iface_mtu = htons(iface_mtu); | |
124 | ps->options = ifa->oa->options; | |
125 | ps->imms = 0; /* Will be set later */ | |
126 | ps->ddseq = htonl(n->dds); | |
127 | length = sizeof(struct ospf_dbdes2_packet); | |
128 | } | |
129 | else /* OSPFv3 */ | |
130 | { | |
131 | struct ospf_dbdes3_packet *ps = (void *) pkt; | |
132 | ps->options = htonl(ifa->oa->options); | |
133 | ps->iface_mtu = htons(iface_mtu); | |
134 | ps->padding = 0; | |
135 | ps->imms = 0; /* Will be set later */ | |
136 | ps->ddseq = htonl(n->dds); | |
137 | length = sizeof(struct ospf_dbdes3_packet); | |
138 | } | |
139 | ||
f8fefde3 OZ |
140 | /* Prepare DBDES body */ |
141 | if (!(n->myimms & DBDES_I) && (n->myimms & DBDES_M)) | |
70945cb6 OZ |
142 | { |
143 | struct ospf_lsa_header *lsas; | |
144 | struct top_hash_entry *en; | |
145 | uint i = 0, lsa_max; | |
146 | ||
147 | ospf_dbdes_body(p, pkt, &lsas, &lsa_max); | |
148 | en = (void *) s_get(&(n->dbsi)); | |
149 | ||
150 | while (i < lsa_max) | |
151 | { | |
152 | if (!SNODE_VALID(en)) | |
153 | { | |
154 | n->myimms &= ~DBDES_M; /* Unset More bit */ | |
155 | break; | |
156 | } | |
157 | ||
158 | if ((en->lsa.age < LSA_MAXAGE) && | |
159 | lsa_flooding_allowed(en->lsa_type, en->domain, ifa)) | |
160 | { | |
161 | lsa_hton_hdr(&(en->lsa), lsas + i); | |
162 | i++; | |
163 | } | |
164 | ||
165 | en = SNODE_NEXT(en); | |
166 | } | |
167 | ||
168 | s_put(&(n->dbsi), SNODE en); | |
169 | ||
170 | length += i * sizeof(struct ospf_lsa_header); | |
171 | } | |
172 | ||
173 | if (ospf_is_v2(p)) | |
174 | ((struct ospf_dbdes2_packet *) pkt)->imms = n->myimms; | |
175 | else | |
176 | ((struct ospf_dbdes3_packet *) pkt)->imms = n->myimms; | |
177 | ||
178 | pkt->length = htons(length); | |
179 | } | |
180 | ||
181 | static void | |
182 | ospf_do_send_dbdes(struct ospf_proto *p, struct ospf_neighbor *n) | |
183 | { | |
184 | struct ospf_iface *ifa = n->ifa; | |
185 | ||
186 | OSPF_PACKET(ospf_dump_dbdes, n->ldd_buffer, | |
f8fefde3 | 187 | "DBDES packet sent to nbr %R on %s", n->rid, ifa->ifname); |
70945cb6 OZ |
188 | sk_set_tbuf(ifa->sk, n->ldd_buffer); |
189 | ospf_send_to(ifa, n->ip); | |
190 | sk_set_tbuf(ifa->sk, NULL); | |
191 | } | |
192 | ||
eee9cefd | 193 | /** |
70945cb6 | 194 | * ospf_send_dbdes - transmit database description packet |
eee9cefd OF |
195 | * @n: neighbor |
196 | * | |
c3226991 | 197 | * Sending of a database description packet is described in 10.8 of RFC 2328. |
baa5dd6c OF |
198 | * Reception of each packet is acknowledged in the sequence number of another. |
199 | * When I send a packet to a neighbor I keep a copy in a buffer. If the neighbor | |
200 | * does not reply, I don't create a new packet but just send the content | |
201 | * of the buffer. | |
eee9cefd | 202 | */ |
4364b47e | 203 | void |
f8fefde3 | 204 | ospf_send_dbdes(struct ospf_proto *p, struct ospf_neighbor *n) |
4364b47e | 205 | { |
70945cb6 | 206 | /* RFC 2328 10.8 */ |
4364b47e | 207 | |
f8fefde3 OZ |
208 | ASSERT((n->state == NEIGHBOR_EXSTART) || (n->state == NEIGHBOR_EXCHANGE)); |
209 | ||
a7a7372a | 210 | if (n->ifa->oa->rt == NULL) |
70945cb6 | 211 | return; |
054a3524 | 212 | |
f8fefde3 OZ |
213 | ospf_prepare_dbdes(p, n); |
214 | ospf_do_send_dbdes(p, n); | |
30147b89 | 215 | |
f8fefde3 OZ |
216 | if (n->state == NEIGHBOR_EXSTART) |
217 | return; | |
781aa475 | 218 | |
f8fefde3 OZ |
219 | /* Master should restart RXMT timer for each DBDES exchange */ |
220 | if (n->myimms & DBDES_MS) | |
221 | tm_start(n->rxmt_timer, n->ifa->rxmtint); | |
12bed559 | 222 | |
f8fefde3 OZ |
223 | if (!(n->myimms & DBDES_MS)) |
224 | if (!(n->myimms & DBDES_M) && !(n->imms & DBDES_M)) | |
225 | ospf_neigh_sm(n, INM_EXDONE); | |
226 | } | |
12bed559 | 227 | |
f8fefde3 OZ |
228 | void |
229 | ospf_rxmt_dbdes(struct ospf_proto *p, struct ospf_neighbor *n) | |
230 | { | |
231 | ASSERT(n->state > NEIGHBOR_EXSTART); | |
e7ef86a5 | 232 | |
f8fefde3 OZ |
233 | if (!n->ldd_buffer) |
234 | { | |
235 | log(L_WARN "%s: No DBDES packet for retransmit", p->p.name); | |
236 | ospf_neigh_sm(n, INM_SEQMIS); | |
237 | return; | |
70945cb6 | 238 | } |
04c6319a | 239 | |
f8fefde3 OZ |
240 | /* Send last packet */ |
241 | ospf_do_send_dbdes(p, n); | |
242 | } | |
48e5f32d | 243 | |
70945cb6 OZ |
244 | static int |
245 | ospf_process_dbdes(struct ospf_proto *p, struct ospf_packet *pkt, struct ospf_neighbor *n) | |
246 | { | |
247 | struct ospf_iface *ifa = n->ifa; | |
f8fefde3 OZ |
248 | struct ospf_lsa_header *lsas, lsa; |
249 | struct top_hash_entry *en, *req; | |
250 | const char *err_dsc = NULL; | |
251 | u32 lsa_type, lsa_domain; | |
70945cb6 OZ |
252 | uint i, lsa_count; |
253 | ||
254 | ospf_dbdes_body(p, pkt, &lsas, &lsa_count); | |
255 | ||
256 | for (i = 0; i < lsa_count; i++) | |
257 | { | |
70945cb6 OZ |
258 | lsa_ntoh_hdr(lsas + i, &lsa); |
259 | lsa_get_type_domain(&lsa, ifa, &lsa_type, &lsa_domain); | |
b1f7229a | 260 | |
70945cb6 | 261 | /* RFC 2328 10.6 and RFC 5340 4.2.2 */ |
b1f7229a | 262 | |
70945cb6 | 263 | if (!lsa_type) |
f8fefde3 | 264 | DROP1("LSA of unknown type"); |
4364b47e | 265 | |
70945cb6 | 266 | if (!oa_is_ext(ifa->oa) && (LSA_SCOPE(lsa_type) == LSA_SCOPE_AS)) |
f8fefde3 | 267 | DROP1("LSA with AS scope in stub area"); |
4364b47e | 268 | |
70945cb6 OZ |
269 | /* Errata 3746 to RFC 2328 - rt-summary-LSAs forbidden in stub areas */ |
270 | if (!oa_is_ext(ifa->oa) && (lsa_type == LSA_T_SUM_RT)) | |
f8fefde3 | 271 | DROP1("rt-summary-LSA in stub area"); |
910e557b | 272 | |
70945cb6 OZ |
273 | /* Not explicitly mentioned in RFC 5340 4.2.2 but makes sense */ |
274 | if (LSA_SCOPE(lsa_type) == LSA_SCOPE_RES) | |
f8fefde3 | 275 | DROP1("LSA with invalid scope"); |
910e557b | 276 | |
70945cb6 OZ |
277 | en = ospf_hash_find(p->gr, lsa_domain, lsa.id, lsa.rt, lsa_type); |
278 | if (!en || (lsa_comp(&lsa, &(en->lsa)) == CMP_NEWER)) | |
279 | { | |
280 | req = ospf_hash_get(n->lsrqh, lsa_domain, lsa.id, lsa.rt, lsa_type); | |
6d2b3211 | 281 | |
70945cb6 OZ |
282 | if (!SNODE_VALID(req)) |
283 | s_add_tail(&n->lsrql, SNODE req); | |
6d2b3211 | 284 | |
70945cb6 | 285 | req->lsa = lsa; |
a7a7372a | 286 | req->lsa_body = LSA_BODY_DUMMY; |
95eb1dba | 287 | } |
6d2b3211 | 288 | } |
70945cb6 OZ |
289 | |
290 | return 0; | |
291 | ||
f8fefde3 OZ |
292 | drop: |
293 | LOG_LSA1("Bad LSA (Type: %04x, Id: %R, Rt: %R) in DBDES", lsa_type, lsa.id, lsa.rt); | |
294 | LOG_LSA2(" received from nbr %R on %s - %s", n->rid, ifa->ifname, err_dsc); | |
295 | ||
70945cb6 OZ |
296 | ospf_neigh_sm(n, INM_SEQMIS); |
297 | return -1; | |
4364b47e OF |
298 | } |
299 | ||
300 | void | |
70945cb6 | 301 | ospf_receive_dbdes(struct ospf_packet *pkt, struct ospf_iface *ifa, |
c3226991 | 302 | struct ospf_neighbor *n) |
4364b47e | 303 | { |
70945cb6 | 304 | struct ospf_proto *p = ifa->oa->po; |
f8fefde3 | 305 | const char *err_dsc = NULL; |
70945cb6 OZ |
306 | u32 rcv_ddseq, rcv_options; |
307 | u16 rcv_iface_mtu; | |
308 | u8 rcv_imms; | |
f8fefde3 | 309 | uint plen, err_val = 0, err_seqmis = 0; |
4364b47e | 310 | |
70945cb6 OZ |
311 | /* RFC 2328 10.6 */ |
312 | ||
313 | plen = ntohs(pkt->length); | |
314 | if (plen < ospf_dbdes_hdrlen(p)) | |
f8fefde3 | 315 | DROP("too short", plen); |
a6bc04d5 | 316 | |
f8fefde3 | 317 | OSPF_PACKET(ospf_dump_dbdes, pkt, "DBDES packet received from nbr %R on %s", n->rid, ifa->ifname); |
b1f7229a | 318 | |
4bb9ce56 | 319 | ospf_neigh_sm(n, INM_HELLOREC); |
353f3261 | 320 | |
70945cb6 OZ |
321 | if (ospf_is_v2(p)) |
322 | { | |
323 | struct ospf_dbdes2_packet *ps = (void *) pkt; | |
324 | rcv_iface_mtu = ntohs(ps->iface_mtu); | |
325 | rcv_options = ps->options; | |
326 | rcv_imms = ps->imms; | |
327 | rcv_ddseq = ntohl(ps->ddseq); | |
328 | } | |
329 | else /* OSPFv3 */ | |
330 | { | |
331 | struct ospf_dbdes3_packet *ps = (void *) pkt; | |
332 | rcv_options = ntohl(ps->options); | |
333 | rcv_iface_mtu = ntohs(ps->iface_mtu); | |
334 | rcv_imms = ps->imms; | |
335 | rcv_ddseq = ntohl(ps->ddseq); | |
336 | } | |
742029eb | 337 | |
12bed559 | 338 | switch (n->state) |
4364b47e | 339 | { |
12bed559 OF |
340 | case NEIGHBOR_DOWN: |
341 | case NEIGHBOR_ATTEMPT: | |
342 | case NEIGHBOR_2WAY: | |
f8fefde3 | 343 | OSPF_TRACE(D_PACKETS, "DBDES packet ignored - lesser state than ExStart"); |
12bed559 | 344 | return; |
70945cb6 | 345 | |
12bed559 OF |
346 | case NEIGHBOR_INIT: |
347 | ospf_neigh_sm(n, INM_2WAYREC); | |
348 | if (n->state != NEIGHBOR_EXSTART) | |
349 | return; | |
9f1500f5 | 350 | |
70945cb6 OZ |
351 | case NEIGHBOR_EXSTART: |
352 | if ((ifa->type != OSPF_IT_VLINK) && | |
353 | (rcv_iface_mtu != ifa->iface->mtu) && | |
354 | (rcv_iface_mtu != 0) && | |
355 | (ifa->iface->mtu != 0)) | |
f8fefde3 OZ |
356 | LOG_PKT_WARN("MTU mismatch with nbr %R on %s (remote %d, local %d)", |
357 | n->rid, ifa->ifname, rcv_iface_mtu, ifa->iface->mtu); | |
70945cb6 OZ |
358 | |
359 | if ((rcv_imms == DBDES_IMMS) && | |
360 | (n->rid > p->router_id) && | |
361 | (plen == ospf_dbdes_hdrlen(p))) | |
12bed559 OF |
362 | { |
363 | /* I'm slave! */ | |
70945cb6 OZ |
364 | n->dds = rcv_ddseq; |
365 | n->ddr = rcv_ddseq; | |
366 | n->options = rcv_options; | |
367 | n->myimms &= ~DBDES_MS; | |
368 | n->imms = rcv_imms; | |
12bed559 | 369 | ospf_neigh_sm(n, INM_NEGDONE); |
f8fefde3 | 370 | ospf_send_dbdes(p, n); |
4364b47e | 371 | break; |
12bed559 | 372 | } |
b1f7229a | 373 | |
70945cb6 OZ |
374 | if (!(rcv_imms & DBDES_I) && |
375 | !(rcv_imms & DBDES_MS) && | |
742029eb | 376 | (n->rid < p->router_id) && |
70945cb6 | 377 | (n->dds == rcv_ddseq)) |
12bed559 | 378 | { |
b1f7229a | 379 | /* I'm master! */ |
70945cb6 OZ |
380 | n->options = rcv_options; |
381 | n->ddr = rcv_ddseq - 1; /* It will be set corectly a few lines down */ | |
382 | n->imms = rcv_imms; | |
b1f7229a | 383 | ospf_neigh_sm(n, INM_NEGDONE); |
12bed559 | 384 | } |
b1f7229a OF |
385 | else |
386 | { | |
70945cb6 | 387 | DBG("%s: Nothing happend to %I (imms=%d)\n", p->name, n->ip, rcv_imms); |
12bed559 | 388 | break; |
b1f7229a | 389 | } |
70945cb6 | 390 | |
12bed559 | 391 | case NEIGHBOR_EXCHANGE: |
70945cb6 OZ |
392 | if ((rcv_imms == n->imms) && |
393 | (rcv_options == n->options) && | |
394 | (rcv_ddseq == n->ddr)) | |
f8fefde3 | 395 | goto duplicate; |
910e557b | 396 | |
f8fefde3 OZ |
397 | /* Do INM_SEQMIS during packet error */ |
398 | err_seqmis = 1; | |
12bed559 | 399 | |
f8fefde3 OZ |
400 | if ((rcv_imms & DBDES_MS) != (n->imms & DBDES_MS)) |
401 | DROP("MS-bit mismatch", rcv_imms); | |
12bed559 | 402 | |
f8fefde3 OZ |
403 | if (rcv_imms & DBDES_I) |
404 | DROP("I-bit mismatch", rcv_imms); | |
405 | ||
406 | if (rcv_options != n->options) | |
407 | DROP("options mismatch", rcv_options); | |
4364b47e | 408 | |
70945cb6 OZ |
409 | n->ddr = rcv_ddseq; |
410 | n->imms = rcv_imms; | |
411 | ||
412 | if (n->myimms & DBDES_MS) | |
12bed559 | 413 | { |
f8fefde3 OZ |
414 | /* MASTER */ |
415 | ||
416 | if (rcv_ddseq != n->dds) | |
417 | DROP("DD sequence number mismatch", rcv_ddseq); | |
70945cb6 | 418 | |
12bed559 | 419 | n->dds++; |
70945cb6 OZ |
420 | |
421 | if (ospf_process_dbdes(p, pkt, n) < 0) | |
422 | return; | |
423 | ||
424 | if (!(n->myimms & DBDES_M) && !(n->imms & DBDES_M)) | |
12bed559 | 425 | ospf_neigh_sm(n, INM_EXDONE); |
12bed559 | 426 | else |
f8fefde3 | 427 | ospf_send_dbdes(p, n); |
12bed559 OF |
428 | } |
429 | else | |
430 | { | |
f8fefde3 OZ |
431 | /* SLAVE */ |
432 | ||
433 | if (rcv_ddseq != (n->dds + 1)) | |
434 | DROP("DD sequence number mismatch", rcv_ddseq); | |
12bed559 | 435 | |
70945cb6 OZ |
436 | n->ddr = rcv_ddseq; |
437 | n->dds = rcv_ddseq; | |
438 | ||
439 | if (ospf_process_dbdes(p, pkt, n) < 0) | |
440 | return; | |
441 | ||
f8fefde3 | 442 | ospf_send_dbdes(p, n); |
70945cb6 | 443 | } |
12bed559 | 444 | break; |
70945cb6 | 445 | |
12bed559 OF |
446 | case NEIGHBOR_LOADING: |
447 | case NEIGHBOR_FULL: | |
70945cb6 OZ |
448 | if ((rcv_imms == n->imms) && |
449 | (rcv_options == n->options) && | |
450 | (rcv_ddseq == n->ddr)) | |
f8fefde3 OZ |
451 | goto duplicate; |
452 | ||
453 | err_seqmis = 1; | |
454 | ||
455 | DROP("too late for DD exchange", n->state); | |
70945cb6 | 456 | |
189dab54 | 457 | default: |
f8fefde3 | 458 | bug("Undefined interface state"); |
12bed559 | 459 | } |
f8fefde3 OZ |
460 | return; |
461 | ||
462 | duplicate: | |
463 | OSPF_TRACE(D_PACKETS, "DBDES packet is duplicate"); | |
464 | ||
465 | /* Slave should retransmit DBDES packet */ | |
466 | if (!(n->myimms & DBDES_MS)) | |
467 | ospf_rxmt_dbdes(p, n); | |
468 | return; | |
469 | ||
470 | drop: | |
471 | LOG_PKT("Bad DBDES packet from nbr %R on %s - %s (%u)", | |
472 | n->rid, ifa->ifname, err_dsc, err_val); | |
473 | ||
474 | if (err_seqmis) | |
475 | ospf_neigh_sm(n, INM_SEQMIS); | |
476 | return; | |
12bed559 | 477 | } |