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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
7f57883e DS |
2 | /* |
3 | * EIGRP Interface Functions. | |
4 | * Copyright (C) 2013-2016 | |
5 | * Authors: | |
6 | * Donnie Savage | |
7 | * Jan Janovic | |
8 | * Matej Perina | |
9 | * Peter Orsag | |
10 | * Peter Paluch | |
11 | * Frantisek Gazo | |
12 | * Tomas Hvorkovy | |
13 | * Martin Kontsek | |
14 | * Lukas Koribsky | |
7f57883e DS |
15 | */ |
16 | ||
17 | #include <zebra.h> | |
18 | ||
cb37cb33 | 19 | #include "event.h" |
7f57883e DS |
20 | #include "linklist.h" |
21 | #include "prefix.h" | |
22 | #include "if.h" | |
23 | #include "table.h" | |
24 | #include "memory.h" | |
fce7f209 | 25 | #include "network.h" |
7f57883e DS |
26 | #include "command.h" |
27 | #include "stream.h" | |
28 | #include "log.h" | |
29 | #include "keychain.h" | |
30 | #include "vrf.h" | |
31 | ||
32 | #include "eigrpd/eigrp_structs.h" | |
33 | #include "eigrpd/eigrpd.h" | |
34 | #include "eigrpd/eigrp_interface.h" | |
35 | #include "eigrpd/eigrp_neighbor.h" | |
36 | #include "eigrpd/eigrp_packet.h" | |
37 | #include "eigrpd/eigrp_zebra.h" | |
38 | #include "eigrpd/eigrp_vty.h" | |
39 | #include "eigrpd/eigrp_network.h" | |
40 | #include "eigrpd/eigrp_topology.h" | |
348addb4 | 41 | #include "eigrpd/eigrp_fsm.h" |
ddbf3e60 | 42 | #include "eigrpd/eigrp_dump.h" |
e9f1847e DS |
43 | #include "eigrpd/eigrp_types.h" |
44 | #include "eigrpd/eigrp_metric.h" | |
7f57883e | 45 | |
b4216e2c DL |
46 | DEFINE_MTYPE_STATIC(EIGRPD, EIGRP_IF, "EIGRP interface"); |
47 | DEFINE_MTYPE_STATIC(EIGRPD, EIGRP_IF_INFO, "EIGRP Interface Information"); | |
48 | ||
d62a17ae | 49 | struct eigrp_interface *eigrp_if_new(struct eigrp *eigrp, struct interface *ifp, |
50 | struct prefix *p) | |
7f57883e | 51 | { |
b748db67 | 52 | struct eigrp_interface *ei = ifp->info; |
d62a17ae | 53 | int i; |
7f57883e | 54 | |
b748db67 | 55 | if (ei) |
d62a17ae | 56 | return ei; |
7f57883e | 57 | |
b748db67 DS |
58 | ei = XCALLOC(MTYPE_EIGRP_IF, sizeof(struct eigrp_interface)); |
59 | ||
d62a17ae | 60 | /* Set zebra interface pointer. */ |
61 | ei->ifp = ifp; | |
b245781a | 62 | prefix_copy(&ei->address, p); |
7f57883e | 63 | |
b748db67 | 64 | ifp->info = ei; |
d62a17ae | 65 | listnode_add(eigrp->eiflist, ei); |
7f57883e | 66 | |
d62a17ae | 67 | ei->type = EIGRP_IFTYPE_BROADCAST; |
7f57883e | 68 | |
d62a17ae | 69 | /* Initialize neighbor list. */ |
70 | ei->nbrs = list_new(); | |
7f57883e | 71 | |
fce7f209 | 72 | ei->crypt_seqnum = frr_sequence32_next(); |
7f57883e | 73 | |
d62a17ae | 74 | /* Initialize lists */ |
75 | for (i = 0; i < EIGRP_FILTER_MAX; i++) { | |
76 | ei->list[i] = NULL; | |
77 | ei->prefix[i] = NULL; | |
78 | ei->routemap[i] = NULL; | |
79 | } | |
7f57883e | 80 | |
b748db67 | 81 | ei->eigrp = eigrp; |
7f57883e | 82 | |
b748db67 DS |
83 | ei->params.v_hello = EIGRP_HELLO_INTERVAL_DEFAULT; |
84 | ei->params.v_wait = EIGRP_HOLD_INTERVAL_DEFAULT; | |
85 | ei->params.bandwidth = EIGRP_BANDWIDTH_DEFAULT; | |
86 | ei->params.delay = EIGRP_DELAY_DEFAULT; | |
87 | ei->params.reliability = EIGRP_RELIABILITY_DEFAULT; | |
88 | ei->params.load = EIGRP_LOAD_DEFAULT; | |
89 | ei->params.auth_type = EIGRP_AUTH_TYPE_NONE; | |
90 | ei->params.auth_keychain = NULL; | |
7f57883e | 91 | |
85d25587 DS |
92 | ei->curr_bandwidth = ifp->bandwidth; |
93 | ei->curr_mtu = ifp->mtu; | |
94 | ||
b748db67 | 95 | return ei; |
7f57883e DS |
96 | } |
97 | ||
d62a17ae | 98 | int eigrp_if_delete_hook(struct interface *ifp) |
7f57883e | 99 | { |
b748db67 DS |
100 | struct eigrp_interface *ei = ifp->info; |
101 | struct eigrp *eigrp; | |
7f57883e | 102 | |
b748db67 DS |
103 | if (!ei) |
104 | return 0; | |
105 | ||
6a154c88 | 106 | list_delete(&ei->nbrs); |
7f57883e | 107 | |
b748db67 DS |
108 | eigrp = ei->eigrp; |
109 | listnode_delete(eigrp->eiflist, ei); | |
7f57883e | 110 | |
c45db77d DS |
111 | eigrp_fifo_free(ei->obuf); |
112 | ||
d62a17ae | 113 | XFREE(MTYPE_EIGRP_IF_INFO, ifp->info); |
7f57883e | 114 | |
d62a17ae | 115 | return 0; |
7f57883e DS |
116 | } |
117 | ||
138c5a74 DS |
118 | static int eigrp_ifp_create(struct interface *ifp) |
119 | { | |
ef7bd2a3 DS |
120 | struct eigrp_interface *ei = ifp->info; |
121 | ||
122 | if (!ei) | |
123 | return 0; | |
124 | ||
125 | ei->params.type = eigrp_default_iftype(ifp); | |
126 | ||
127 | eigrp_if_update(ifp); | |
128 | ||
138c5a74 DS |
129 | return 0; |
130 | } | |
131 | ||
132 | static int eigrp_ifp_up(struct interface *ifp) | |
133 | { | |
85d25587 | 134 | struct eigrp_interface *ei = ifp->info; |
ddbf3e60 DS |
135 | |
136 | if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE)) | |
137 | zlog_debug("Zebra: Interface[%s] state change to up.", | |
138 | ifp->name); | |
139 | ||
85d25587 DS |
140 | if (!ei) |
141 | return 0; | |
142 | ||
143 | if (ei->curr_bandwidth != ifp->bandwidth) { | |
144 | if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE)) | |
145 | zlog_debug( | |
146 | "Zebra: Interface[%s] bandwidth change %d -> %d.", | |
147 | ifp->name, ei->curr_bandwidth, | |
148 | ifp->bandwidth); | |
149 | ||
150 | ei->curr_bandwidth = ifp->bandwidth; | |
151 | // eigrp_if_recalculate_output_cost (ifp); | |
152 | } | |
153 | ||
154 | if (ei->curr_mtu != ifp->mtu) { | |
155 | if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE)) | |
156 | zlog_debug( | |
157 | "Zebra: Interface[%s] MTU change %u -> %u.", | |
158 | ifp->name, ei->curr_mtu, ifp->mtu); | |
159 | ||
160 | ei->curr_mtu = ifp->mtu; | |
161 | /* Must reset the interface (simulate down/up) when MTU | |
162 | * changes. */ | |
163 | eigrp_if_reset(ifp); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | eigrp_if_up(ifp->info); | |
ddbf3e60 | 168 | |
138c5a74 DS |
169 | return 0; |
170 | } | |
171 | ||
172 | static int eigrp_ifp_down(struct interface *ifp) | |
173 | { | |
b0b69e59 DS |
174 | if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE)) |
175 | zlog_debug("Zebra: Interface[%s] state change to down.", | |
176 | ifp->name); | |
177 | ||
178 | if (ifp->info) | |
179 | eigrp_if_down(ifp->info); | |
180 | ||
138c5a74 DS |
181 | return 0; |
182 | } | |
183 | ||
184 | static int eigrp_ifp_destroy(struct interface *ifp) | |
185 | { | |
3c3c3252 DS |
186 | if (if_is_up(ifp)) |
187 | zlog_warn("Zebra: got delete of %s, but interface is still up", | |
188 | ifp->name); | |
189 | ||
190 | if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE)) | |
191 | zlog_debug( | |
192 | "Zebra: interface delete %s index %d flags %llx metric %d mtu %d", | |
193 | ifp->name, ifp->ifindex, (unsigned long long)ifp->flags, | |
194 | ifp->metric, ifp->mtu); | |
195 | ||
196 | if (ifp->info) | |
197 | eigrp_if_free(ifp->info, INTERFACE_DOWN_BY_ZEBRA); | |
198 | ||
138c5a74 DS |
199 | return 0; |
200 | } | |
201 | ||
7f57883e DS |
202 | struct list *eigrp_iflist; |
203 | ||
4d762f26 | 204 | void eigrp_if_init(void) |
7f57883e | 205 | { |
138c5a74 DS |
206 | if_zapi_callbacks(eigrp_ifp_create, eigrp_ifp_up, |
207 | eigrp_ifp_down, eigrp_ifp_destroy); | |
d62a17ae | 208 | /* Initialize Zebra interface data structure. */ |
996c9314 | 209 | // hook_register_prio(if_add, 0, eigrp_if_new); |
ce19a04a | 210 | hook_register_prio(if_del, 0, eigrp_if_delete_hook); |
7f57883e DS |
211 | } |
212 | ||
7f57883e | 213 | |
d62a17ae | 214 | void eigrp_del_if_params(struct eigrp_if_params *eip) |
7f57883e | 215 | { |
d62a17ae | 216 | if (eip->auth_keychain) |
217 | free(eip->auth_keychain); | |
7f57883e DS |
218 | } |
219 | ||
7c6ff2c5 DS |
220 | /* |
221 | * Set the network byte order of the 3 bytes we send | |
222 | * of the mtu of the link. | |
223 | */ | |
224 | static void eigrp_mtu_convert(struct eigrp_metrics *metric, uint32_t host_mtu) | |
225 | { | |
226 | uint32_t network_mtu = htonl(host_mtu); | |
227 | uint8_t *nm = (uint8_t *)&network_mtu; | |
228 | ||
229 | metric->mtu[0] = nm[1]; | |
230 | metric->mtu[1] = nm[2]; | |
231 | metric->mtu[2] = nm[3]; | |
232 | } | |
233 | ||
d62a17ae | 234 | int eigrp_if_up(struct eigrp_interface *ei) |
7f57883e | 235 | { |
dc4accdd DS |
236 | struct eigrp_prefix_descriptor *pe; |
237 | struct eigrp_route_descriptor *ne; | |
d62a17ae | 238 | struct eigrp_metrics metric; |
239 | struct eigrp_interface *ei2; | |
240 | struct listnode *node, *nnode; | |
dbfd865b | 241 | struct eigrp *eigrp; |
d62a17ae | 242 | |
243 | if (ei == NULL) | |
244 | return 0; | |
245 | ||
dbfd865b DS |
246 | eigrp = ei->eigrp; |
247 | eigrp_adjust_sndbuflen(eigrp, ei->ifp->mtu); | |
248 | ||
d62a17ae | 249 | eigrp_if_stream_set(ei); |
250 | ||
251 | /* Set multicast memberships appropriately for new state. */ | |
252 | eigrp_if_set_multicast(ei); | |
253 | ||
907a2395 | 254 | event_add_event(master, eigrp_hello_timer, ei, (1), &ei->t_hello); |
d62a17ae | 255 | |
256 | /*Prepare metrics*/ | |
996c9314 | 257 | metric.bandwidth = eigrp_bandwidth_to_scaled(ei->params.bandwidth); |
b748db67 DS |
258 | metric.delay = eigrp_delay_to_scaled(ei->params.delay); |
259 | metric.load = ei->params.load; | |
260 | metric.reliability = ei->params.reliability; | |
7c6ff2c5 | 261 | eigrp_mtu_convert(&metric, ei->ifp->mtu); |
d62a17ae | 262 | metric.hop_count = 0; |
263 | metric.flags = 0; | |
264 | metric.tag = 0; | |
265 | ||
266 | /*Add connected entry to topology table*/ | |
267 | ||
dc4accdd | 268 | ne = eigrp_route_descriptor_new(); |
348addb4 DS |
269 | ne->ei = ei; |
270 | ne->reported_metric = metric; | |
271 | ne->total_metric = metric; | |
272 | ne->distance = eigrp_calculate_metrics(eigrp, metric); | |
273 | ne->reported_distance = 0; | |
274 | ne->adv_router = eigrp->neighbor_self; | |
dc4accdd | 275 | ne->flags = EIGRP_ROUTE_DESCRIPTOR_SUCCESSOR_FLAG; |
348addb4 | 276 | |
02b45998 | 277 | struct prefix dest_addr; |
d62a17ae | 278 | |
b245781a | 279 | dest_addr = ei->address; |
02b45998 | 280 | apply_mask(&dest_addr); |
d62a17ae | 281 | pe = eigrp_topology_table_lookup_ipv4(eigrp->topology_table, |
476a1469 | 282 | &dest_addr); |
d62a17ae | 283 | |
284 | if (pe == NULL) { | |
dc4accdd | 285 | pe = eigrp_prefix_descriptor_new(); |
d62a17ae | 286 | pe->serno = eigrp->serno; |
02b45998 DS |
287 | pe->destination = (struct prefix *)prefix_ipv4_new(); |
288 | prefix_copy(pe->destination, &dest_addr); | |
d62a17ae | 289 | pe->af = AF_INET; |
290 | pe->nt = EIGRP_TOPOLOGY_TYPE_CONNECTED; | |
291 | ||
348addb4 | 292 | ne->prefix = pe; |
cd6c573c | 293 | pe->reported_metric = metric; |
d62a17ae | 294 | pe->state = EIGRP_FSM_STATE_PASSIVE; |
295 | pe->fdistance = eigrp_calculate_metrics(eigrp, metric); | |
296 | pe->req_action |= EIGRP_FSM_NEED_UPDATE; | |
dc4accdd | 297 | eigrp_prefix_descriptor_add(eigrp->topology_table, pe); |
d62a17ae | 298 | listnode_add(eigrp->topology_changes_internalIPV4, pe); |
d62a17ae | 299 | |
dc4accdd | 300 | eigrp_route_descriptor_add(eigrp, pe, ne); |
d62a17ae | 301 | |
348addb4 DS |
302 | for (ALL_LIST_ELEMENTS(eigrp->eiflist, node, nnode, ei2)) { |
303 | eigrp_update_send(ei2); | |
304 | } | |
305 | ||
306 | pe->req_action &= ~EIGRP_FSM_NEED_UPDATE; | |
307 | listnode_delete(eigrp->topology_changes_internalIPV4, pe); | |
308 | } else { | |
309 | struct eigrp_fsm_action_message msg; | |
310 | ||
311 | ne->prefix = pe; | |
dc4accdd | 312 | eigrp_route_descriptor_add(eigrp, pe, ne); |
348addb4 DS |
313 | |
314 | msg.packet_type = EIGRP_OPC_UPDATE; | |
315 | msg.eigrp = eigrp; | |
316 | msg.data_type = EIGRP_CONNECTED; | |
317 | msg.adv_router = NULL; | |
318 | msg.entry = ne; | |
319 | msg.prefix = pe; | |
320 | ||
321 | eigrp_fsm_event(&msg); | |
322 | } | |
d62a17ae | 323 | |
324 | return 1; | |
7f57883e DS |
325 | } |
326 | ||
d62a17ae | 327 | int eigrp_if_down(struct eigrp_interface *ei) |
7f57883e | 328 | { |
d62a17ae | 329 | struct listnode *node, *nnode; |
330 | struct eigrp_neighbor *nbr; | |
7f57883e | 331 | |
d62a17ae | 332 | if (ei == NULL) |
333 | return 0; | |
7f57883e | 334 | |
d62a17ae | 335 | /* Shutdown packet reception and sending */ |
28ef0ee1 | 336 | THREAD_OFF(ei->t_hello); |
7f57883e | 337 | |
d62a17ae | 338 | eigrp_if_stream_unset(ei); |
7f57883e | 339 | |
d62a17ae | 340 | /*Set infinite metrics to routes learned by this interface and start |
341 | * query process*/ | |
342 | for (ALL_LIST_ELEMENTS(ei->nbrs, node, nnode, nbr)) { | |
343 | eigrp_nbr_delete(nbr); | |
344 | } | |
7f57883e | 345 | |
d62a17ae | 346 | return 1; |
7f57883e DS |
347 | } |
348 | ||
d62a17ae | 349 | void eigrp_if_stream_set(struct eigrp_interface *ei) |
7f57883e | 350 | { |
d62a17ae | 351 | /* set output fifo queue. */ |
352 | if (ei->obuf == NULL) | |
353 | ei->obuf = eigrp_fifo_new(); | |
7f57883e DS |
354 | } |
355 | ||
d62a17ae | 356 | void eigrp_if_stream_unset(struct eigrp_interface *ei) |
7f57883e | 357 | { |
d62a17ae | 358 | struct eigrp *eigrp = ei->eigrp; |
359 | ||
c45db77d DS |
360 | if (ei->on_write_q) { |
361 | listnode_delete(eigrp->oi_write_q, ei); | |
362 | if (list_isempty(eigrp->oi_write_q)) | |
332beb64 | 363 | event_cancel(&(eigrp->t_write)); |
c45db77d | 364 | ei->on_write_q = 0; |
d62a17ae | 365 | } |
7f57883e DS |
366 | } |
367 | ||
b748db67 DS |
368 | bool eigrp_if_is_passive(struct eigrp_interface *ei) |
369 | { | |
370 | if (ei->params.passive_interface == EIGRP_IF_ACTIVE) | |
371 | return false; | |
372 | ||
373 | if (ei->eigrp->passive_interface_default == EIGRP_IF_ACTIVE) | |
374 | return false; | |
375 | ||
376 | return true; | |
377 | } | |
378 | ||
d62a17ae | 379 | void eigrp_if_set_multicast(struct eigrp_interface *ei) |
7f57883e | 380 | { |
b748db67 | 381 | if (!eigrp_if_is_passive(ei)) { |
d62a17ae | 382 | /* The interface should belong to the EIGRP-all-routers group. |
383 | */ | |
b748db67 | 384 | if (!ei->member_allrouters |
b245781a | 385 | && (eigrp_if_add_allspfrouters(ei->eigrp, &ei->address, |
d62a17ae | 386 | ei->ifp->ifindex) |
387 | >= 0)) | |
388 | /* Set the flag only if the system call to join | |
389 | * succeeded. */ | |
b748db67 | 390 | ei->member_allrouters = true; |
d62a17ae | 391 | } else { |
392 | /* The interface should NOT belong to the EIGRP-all-routers | |
393 | * group. */ | |
b748db67 | 394 | if (ei->member_allrouters) { |
d62a17ae | 395 | /* Only actually drop if this is the last reference */ |
b245781a | 396 | eigrp_if_drop_allspfrouters(ei->eigrp, &ei->address, |
b748db67 | 397 | ei->ifp->ifindex); |
d62a17ae | 398 | /* Unset the flag regardless of whether the system call |
399 | to leave | |
400 | the group succeeded, since it's much safer to assume | |
401 | that | |
402 | we are not a member. */ | |
b748db67 | 403 | ei->member_allrouters = false; |
d62a17ae | 404 | } |
405 | } | |
7f57883e DS |
406 | } |
407 | ||
d7c0a89a | 408 | uint8_t eigrp_default_iftype(struct interface *ifp) |
7f57883e | 409 | { |
d62a17ae | 410 | if (if_is_pointopoint(ifp)) |
411 | return EIGRP_IFTYPE_POINTOPOINT; | |
412 | else if (if_is_loopback(ifp)) | |
413 | return EIGRP_IFTYPE_LOOPBACK; | |
414 | else | |
415 | return EIGRP_IFTYPE_BROADCAST; | |
7f57883e DS |
416 | } |
417 | ||
996c9314 | 418 | void eigrp_if_free(struct eigrp_interface *ei, int source) |
7f57883e | 419 | { |
476a1469 | 420 | struct prefix dest_addr; |
dc4accdd | 421 | struct eigrp_prefix_descriptor *pe; |
e9449961 | 422 | struct eigrp *eigrp = ei->eigrp; |
0bf75bd5 | 423 | |
d62a17ae | 424 | if (source == INTERFACE_DOWN_BY_VTY) { |
332beb64 | 425 | event_cancel(&ei->t_hello); |
d62a17ae | 426 | eigrp_hello_send(ei, EIGRP_HELLO_GRACEFUL_SHUTDOWN, NULL); |
427 | } | |
428 | ||
b245781a | 429 | dest_addr = ei->address; |
476a1469 | 430 | apply_mask(&dest_addr); |
d62a17ae | 431 | pe = eigrp_topology_table_lookup_ipv4(eigrp->topology_table, |
432 | &dest_addr); | |
433 | if (pe) | |
dc4accdd DS |
434 | eigrp_prefix_descriptor_delete(eigrp, eigrp->topology_table, |
435 | pe); | |
d62a17ae | 436 | |
437 | eigrp_if_down(ei); | |
438 | ||
d62a17ae | 439 | listnode_delete(ei->eigrp->eiflist, ei); |
7f57883e DS |
440 | } |
441 | ||
442 | /* Simulate down/up on the interface. This is needed, for example, when | |
f9e5c9ca | 443 | the MTU changes. */ |
d62a17ae | 444 | void eigrp_if_reset(struct interface *ifp) |
7f57883e | 445 | { |
b748db67 | 446 | struct eigrp_interface *ei = ifp->info; |
7f57883e | 447 | |
b748db67 DS |
448 | if (!ei) |
449 | return; | |
7f57883e | 450 | |
b748db67 DS |
451 | eigrp_if_down(ei); |
452 | eigrp_if_up(ei); | |
7f57883e DS |
453 | } |
454 | ||
d62a17ae | 455 | struct eigrp_interface *eigrp_if_lookup_by_local_addr(struct eigrp *eigrp, |
456 | struct interface *ifp, | |
457 | struct in_addr address) | |
7f57883e | 458 | { |
d62a17ae | 459 | struct listnode *node; |
460 | struct eigrp_interface *ei; | |
7f57883e | 461 | |
d62a17ae | 462 | for (ALL_LIST_ELEMENTS_RO(eigrp->eiflist, node, ei)) { |
463 | if (ifp && ei->ifp != ifp) | |
464 | continue; | |
7f57883e | 465 | |
b245781a | 466 | if (IPV4_ADDR_SAME(&address, &ei->address.u.prefix4)) |
d62a17ae | 467 | return ei; |
468 | } | |
7f57883e | 469 | |
d62a17ae | 470 | return NULL; |
7f57883e DS |
471 | } |
472 | ||
473 | /** | |
474 | * @fn eigrp_if_lookup_by_name | |
475 | * | |
476 | * @param[in] eigrp EIGRP process | |
477 | * @param[in] if_name Name of the interface | |
478 | * | |
479 | * @return struct eigrp_interface * | |
480 | * | |
481 | * @par | |
482 | * Function is used for lookup interface by name. | |
483 | */ | |
d62a17ae | 484 | struct eigrp_interface *eigrp_if_lookup_by_name(struct eigrp *eigrp, |
485 | const char *if_name) | |
7f57883e | 486 | { |
d62a17ae | 487 | struct eigrp_interface *ei; |
488 | struct listnode *node; | |
489 | ||
490 | /* iterate over all eigrp interfaces */ | |
491 | for (ALL_LIST_ELEMENTS_RO(eigrp->eiflist, node, ei)) { | |
492 | /* compare int name with eigrp interface's name */ | |
493 | if (strcmp(ei->ifp->name, if_name) == 0) { | |
494 | return ei; | |
495 | } | |
496 | } | |
497 | ||
498 | return NULL; | |
7f57883e | 499 | } |