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1da177e4 LT |
1 | /* cmservice.c: AFS Cache Manager Service |
2 | * | |
3 | * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/sched.h> | |
15 | #include <linux/completion.h> | |
16 | #include "server.h" | |
17 | #include "cell.h" | |
18 | #include "transport.h" | |
19 | #include <rxrpc/rxrpc.h> | |
20 | #include <rxrpc/transport.h> | |
21 | #include <rxrpc/connection.h> | |
22 | #include <rxrpc/call.h> | |
23 | #include "cmservice.h" | |
24 | #include "internal.h" | |
25 | ||
26 | static unsigned afscm_usage; /* AFS cache manager usage count */ | |
27 | static struct rw_semaphore afscm_sem; /* AFS cache manager start/stop semaphore */ | |
28 | ||
29 | static int afscm_new_call(struct rxrpc_call *call); | |
30 | static void afscm_attention(struct rxrpc_call *call); | |
31 | static void afscm_error(struct rxrpc_call *call); | |
32 | static void afscm_aemap(struct rxrpc_call *call); | |
33 | ||
34 | static void _SRXAFSCM_CallBack(struct rxrpc_call *call); | |
35 | static void _SRXAFSCM_InitCallBackState(struct rxrpc_call *call); | |
36 | static void _SRXAFSCM_Probe(struct rxrpc_call *call); | |
37 | ||
38 | typedef void (*_SRXAFSCM_xxxx_t)(struct rxrpc_call *call); | |
39 | ||
40 | static const struct rxrpc_operation AFSCM_ops[] = { | |
41 | { | |
42 | .id = 204, | |
43 | .asize = RXRPC_APP_MARK_EOF, | |
44 | .name = "CallBack", | |
45 | .user = _SRXAFSCM_CallBack, | |
46 | }, | |
47 | { | |
48 | .id = 205, | |
49 | .asize = RXRPC_APP_MARK_EOF, | |
50 | .name = "InitCallBackState", | |
51 | .user = _SRXAFSCM_InitCallBackState, | |
52 | }, | |
53 | { | |
54 | .id = 206, | |
55 | .asize = RXRPC_APP_MARK_EOF, | |
56 | .name = "Probe", | |
57 | .user = _SRXAFSCM_Probe, | |
58 | }, | |
59 | #if 0 | |
60 | { | |
61 | .id = 207, | |
62 | .asize = RXRPC_APP_MARK_EOF, | |
63 | .name = "GetLock", | |
64 | .user = _SRXAFSCM_GetLock, | |
65 | }, | |
66 | { | |
67 | .id = 208, | |
68 | .asize = RXRPC_APP_MARK_EOF, | |
69 | .name = "GetCE", | |
70 | .user = _SRXAFSCM_GetCE, | |
71 | }, | |
72 | { | |
73 | .id = 209, | |
74 | .asize = RXRPC_APP_MARK_EOF, | |
75 | .name = "GetXStatsVersion", | |
76 | .user = _SRXAFSCM_GetXStatsVersion, | |
77 | }, | |
78 | { | |
79 | .id = 210, | |
80 | .asize = RXRPC_APP_MARK_EOF, | |
81 | .name = "GetXStats", | |
82 | .user = _SRXAFSCM_GetXStats, | |
83 | } | |
84 | #endif | |
85 | }; | |
86 | ||
87 | static struct rxrpc_service AFSCM_service = { | |
88 | .name = "AFS/CM", | |
89 | .owner = THIS_MODULE, | |
90 | .link = LIST_HEAD_INIT(AFSCM_service.link), | |
91 | .new_call = afscm_new_call, | |
92 | .service_id = 1, | |
93 | .attn_func = afscm_attention, | |
94 | .error_func = afscm_error, | |
95 | .aemap_func = afscm_aemap, | |
96 | .ops_begin = &AFSCM_ops[0], | |
e8c96f8c | 97 | .ops_end = &AFSCM_ops[ARRAY_SIZE(AFSCM_ops)], |
1da177e4 LT |
98 | }; |
99 | ||
100 | static DECLARE_COMPLETION(kafscmd_alive); | |
101 | static DECLARE_COMPLETION(kafscmd_dead); | |
102 | static DECLARE_WAIT_QUEUE_HEAD(kafscmd_sleepq); | |
103 | static LIST_HEAD(kafscmd_attention_list); | |
104 | static LIST_HEAD(afscm_calls); | |
105 | static DEFINE_SPINLOCK(afscm_calls_lock); | |
106 | static DEFINE_SPINLOCK(kafscmd_attention_lock); | |
107 | static int kafscmd_die; | |
108 | ||
109 | /*****************************************************************************/ | |
110 | /* | |
111 | * AFS Cache Manager kernel thread | |
112 | */ | |
113 | static int kafscmd(void *arg) | |
114 | { | |
115 | DECLARE_WAITQUEUE(myself, current); | |
116 | ||
117 | struct rxrpc_call *call; | |
118 | _SRXAFSCM_xxxx_t func; | |
119 | int die; | |
120 | ||
e8d2a424 | 121 | printk(KERN_INFO "kAFS: Started kafscmd %d\n", current->pid); |
1da177e4 LT |
122 | |
123 | daemonize("kafscmd"); | |
124 | ||
125 | complete(&kafscmd_alive); | |
126 | ||
127 | /* loop around looking for things to attend to */ | |
128 | do { | |
129 | if (list_empty(&kafscmd_attention_list)) { | |
130 | set_current_state(TASK_INTERRUPTIBLE); | |
131 | add_wait_queue(&kafscmd_sleepq, &myself); | |
132 | ||
133 | for (;;) { | |
134 | set_current_state(TASK_INTERRUPTIBLE); | |
135 | if (!list_empty(&kafscmd_attention_list) || | |
136 | signal_pending(current) || | |
137 | kafscmd_die) | |
138 | break; | |
139 | ||
140 | schedule(); | |
141 | } | |
142 | ||
143 | remove_wait_queue(&kafscmd_sleepq, &myself); | |
144 | set_current_state(TASK_RUNNING); | |
145 | } | |
146 | ||
147 | die = kafscmd_die; | |
148 | ||
149 | /* dequeue the next call requiring attention */ | |
150 | call = NULL; | |
151 | spin_lock(&kafscmd_attention_lock); | |
152 | ||
153 | if (!list_empty(&kafscmd_attention_list)) { | |
154 | call = list_entry(kafscmd_attention_list.next, | |
155 | struct rxrpc_call, | |
156 | app_attn_link); | |
157 | list_del_init(&call->app_attn_link); | |
158 | die = 0; | |
159 | } | |
160 | ||
161 | spin_unlock(&kafscmd_attention_lock); | |
162 | ||
163 | if (call) { | |
164 | /* act upon it */ | |
165 | _debug("@@@ Begin Attend Call %p", call); | |
166 | ||
167 | func = call->app_user; | |
168 | if (func) | |
169 | func(call); | |
170 | ||
171 | rxrpc_put_call(call); | |
172 | ||
173 | _debug("@@@ End Attend Call %p", call); | |
174 | } | |
175 | ||
176 | } while(!die); | |
177 | ||
178 | /* and that's all */ | |
179 | complete_and_exit(&kafscmd_dead, 0); | |
180 | ||
181 | } /* end kafscmd() */ | |
182 | ||
183 | /*****************************************************************************/ | |
184 | /* | |
185 | * handle a call coming in to the cache manager | |
186 | * - if I want to keep the call, I must increment its usage count | |
187 | * - the return value will be negated and passed back in an abort packet if | |
188 | * non-zero | |
189 | * - serialised by virtue of there only being one krxiod | |
190 | */ | |
191 | static int afscm_new_call(struct rxrpc_call *call) | |
192 | { | |
193 | _enter("%p{cid=%u u=%d}", | |
194 | call, ntohl(call->call_id), atomic_read(&call->usage)); | |
195 | ||
196 | rxrpc_get_call(call); | |
197 | ||
198 | /* add to my current call list */ | |
199 | spin_lock(&afscm_calls_lock); | |
200 | list_add(&call->app_link,&afscm_calls); | |
201 | spin_unlock(&afscm_calls_lock); | |
202 | ||
203 | _leave(" = 0"); | |
204 | return 0; | |
205 | ||
206 | } /* end afscm_new_call() */ | |
207 | ||
208 | /*****************************************************************************/ | |
209 | /* | |
210 | * queue on the kafscmd queue for attention | |
211 | */ | |
212 | static void afscm_attention(struct rxrpc_call *call) | |
213 | { | |
214 | _enter("%p{cid=%u u=%d}", | |
215 | call, ntohl(call->call_id), atomic_read(&call->usage)); | |
216 | ||
217 | spin_lock(&kafscmd_attention_lock); | |
218 | ||
219 | if (list_empty(&call->app_attn_link)) { | |
220 | list_add_tail(&call->app_attn_link, &kafscmd_attention_list); | |
221 | rxrpc_get_call(call); | |
222 | } | |
223 | ||
224 | spin_unlock(&kafscmd_attention_lock); | |
225 | ||
226 | wake_up(&kafscmd_sleepq); | |
227 | ||
228 | _leave(" {u=%d}", atomic_read(&call->usage)); | |
229 | } /* end afscm_attention() */ | |
230 | ||
231 | /*****************************************************************************/ | |
232 | /* | |
233 | * handle my call being aborted | |
234 | * - clean up, dequeue and put my ref to the call | |
235 | */ | |
236 | static void afscm_error(struct rxrpc_call *call) | |
237 | { | |
238 | int removed; | |
239 | ||
240 | _enter("%p{est=%s ac=%u er=%d}", | |
241 | call, | |
242 | rxrpc_call_error_states[call->app_err_state], | |
243 | call->app_abort_code, | |
244 | call->app_errno); | |
245 | ||
246 | spin_lock(&kafscmd_attention_lock); | |
247 | ||
248 | if (list_empty(&call->app_attn_link)) { | |
249 | list_add_tail(&call->app_attn_link, &kafscmd_attention_list); | |
250 | rxrpc_get_call(call); | |
251 | } | |
252 | ||
253 | spin_unlock(&kafscmd_attention_lock); | |
254 | ||
255 | removed = 0; | |
256 | spin_lock(&afscm_calls_lock); | |
257 | if (!list_empty(&call->app_link)) { | |
258 | list_del_init(&call->app_link); | |
259 | removed = 1; | |
260 | } | |
261 | spin_unlock(&afscm_calls_lock); | |
262 | ||
263 | if (removed) | |
264 | rxrpc_put_call(call); | |
265 | ||
266 | wake_up(&kafscmd_sleepq); | |
267 | ||
268 | _leave(""); | |
269 | } /* end afscm_error() */ | |
270 | ||
271 | /*****************************************************************************/ | |
272 | /* | |
273 | * map afs abort codes to/from Linux error codes | |
274 | * - called with call->lock held | |
275 | */ | |
276 | static void afscm_aemap(struct rxrpc_call *call) | |
277 | { | |
278 | switch (call->app_err_state) { | |
279 | case RXRPC_ESTATE_LOCAL_ABORT: | |
280 | call->app_abort_code = -call->app_errno; | |
281 | break; | |
282 | case RXRPC_ESTATE_PEER_ABORT: | |
283 | call->app_errno = -ECONNABORTED; | |
284 | break; | |
285 | default: | |
286 | break; | |
287 | } | |
288 | } /* end afscm_aemap() */ | |
289 | ||
290 | /*****************************************************************************/ | |
291 | /* | |
292 | * start the cache manager service if not already started | |
293 | */ | |
294 | int afscm_start(void) | |
295 | { | |
296 | int ret; | |
297 | ||
298 | down_write(&afscm_sem); | |
299 | if (!afscm_usage) { | |
300 | ret = kernel_thread(kafscmd, NULL, 0); | |
301 | if (ret < 0) | |
302 | goto out; | |
303 | ||
304 | wait_for_completion(&kafscmd_alive); | |
305 | ||
306 | ret = rxrpc_add_service(afs_transport, &AFSCM_service); | |
307 | if (ret < 0) | |
308 | goto kill; | |
309 | ||
310 | afs_kafstimod_add_timer(&afs_mntpt_expiry_timer, | |
311 | afs_mntpt_expiry_timeout * HZ); | |
312 | } | |
313 | ||
314 | afscm_usage++; | |
315 | up_write(&afscm_sem); | |
316 | ||
317 | return 0; | |
318 | ||
319 | kill: | |
320 | kafscmd_die = 1; | |
321 | wake_up(&kafscmd_sleepq); | |
322 | wait_for_completion(&kafscmd_dead); | |
323 | ||
324 | out: | |
325 | up_write(&afscm_sem); | |
326 | return ret; | |
327 | ||
328 | } /* end afscm_start() */ | |
329 | ||
330 | /*****************************************************************************/ | |
331 | /* | |
332 | * stop the cache manager service | |
333 | */ | |
334 | void afscm_stop(void) | |
335 | { | |
336 | struct rxrpc_call *call; | |
337 | ||
338 | down_write(&afscm_sem); | |
339 | ||
340 | BUG_ON(afscm_usage == 0); | |
341 | afscm_usage--; | |
342 | ||
343 | if (afscm_usage == 0) { | |
344 | /* don't want more incoming calls */ | |
345 | rxrpc_del_service(afs_transport, &AFSCM_service); | |
346 | ||
347 | /* abort any calls I've still got open (the afscm_error() will | |
348 | * dequeue them) */ | |
349 | spin_lock(&afscm_calls_lock); | |
350 | while (!list_empty(&afscm_calls)) { | |
351 | call = list_entry(afscm_calls.next, | |
352 | struct rxrpc_call, | |
353 | app_link); | |
354 | ||
355 | list_del_init(&call->app_link); | |
356 | rxrpc_get_call(call); | |
357 | spin_unlock(&afscm_calls_lock); | |
358 | ||
359 | rxrpc_call_abort(call, -ESRCH); /* abort, dequeue and | |
360 | * put */ | |
361 | ||
362 | _debug("nuking active call %08x.%d", | |
363 | ntohl(call->conn->conn_id), | |
364 | ntohl(call->call_id)); | |
365 | rxrpc_put_call(call); | |
366 | rxrpc_put_call(call); | |
367 | ||
368 | spin_lock(&afscm_calls_lock); | |
369 | } | |
370 | spin_unlock(&afscm_calls_lock); | |
371 | ||
372 | /* get rid of my daemon */ | |
373 | kafscmd_die = 1; | |
374 | wake_up(&kafscmd_sleepq); | |
375 | wait_for_completion(&kafscmd_dead); | |
376 | ||
377 | /* dispose of any calls waiting for attention */ | |
378 | spin_lock(&kafscmd_attention_lock); | |
379 | while (!list_empty(&kafscmd_attention_list)) { | |
380 | call = list_entry(kafscmd_attention_list.next, | |
381 | struct rxrpc_call, | |
382 | app_attn_link); | |
383 | ||
384 | list_del_init(&call->app_attn_link); | |
385 | spin_unlock(&kafscmd_attention_lock); | |
386 | ||
387 | rxrpc_put_call(call); | |
388 | ||
389 | spin_lock(&kafscmd_attention_lock); | |
390 | } | |
391 | spin_unlock(&kafscmd_attention_lock); | |
392 | ||
393 | afs_kafstimod_del_timer(&afs_mntpt_expiry_timer); | |
394 | } | |
395 | ||
396 | up_write(&afscm_sem); | |
397 | ||
398 | } /* end afscm_stop() */ | |
399 | ||
400 | /*****************************************************************************/ | |
401 | /* | |
402 | * handle the fileserver breaking a set of callbacks | |
403 | */ | |
404 | static void _SRXAFSCM_CallBack(struct rxrpc_call *call) | |
405 | { | |
406 | struct afs_server *server; | |
407 | size_t count, qty, tmp; | |
408 | int ret = 0, removed; | |
409 | ||
410 | _enter("%p{acs=%s}", call, rxrpc_call_states[call->app_call_state]); | |
411 | ||
412 | server = afs_server_get_from_peer(call->conn->peer); | |
413 | ||
414 | switch (call->app_call_state) { | |
415 | /* we've received the last packet | |
416 | * - drain all the data from the call and send the reply | |
417 | */ | |
418 | case RXRPC_CSTATE_SRVR_GOT_ARGS: | |
419 | ret = -EBADMSG; | |
420 | qty = call->app_ready_qty; | |
421 | if (qty < 8 || qty > 50 * (6 * 4) + 8) | |
422 | break; | |
423 | ||
424 | { | |
425 | struct afs_callback *cb, *pcb; | |
426 | int loop; | |
427 | __be32 *fp, *bp; | |
428 | ||
429 | fp = rxrpc_call_alloc_scratch(call, qty); | |
430 | ||
431 | /* drag the entire argument block out to the scratch | |
432 | * space */ | |
433 | ret = rxrpc_call_read_data(call, fp, qty, 0); | |
434 | if (ret < 0) | |
435 | break; | |
436 | ||
437 | /* and unmarshall the parameter block */ | |
438 | ret = -EBADMSG; | |
439 | count = ntohl(*fp++); | |
440 | if (count>AFSCBMAX || | |
441 | (count * (3 * 4) + 8 != qty && | |
442 | count * (6 * 4) + 8 != qty)) | |
443 | break; | |
444 | ||
445 | bp = fp + count*3; | |
446 | tmp = ntohl(*bp++); | |
447 | if (tmp > 0 && tmp != count) | |
448 | break; | |
449 | if (tmp == 0) | |
450 | bp = NULL; | |
451 | ||
452 | pcb = cb = rxrpc_call_alloc_scratch_s( | |
453 | call, struct afs_callback); | |
454 | ||
455 | for (loop = count - 1; loop >= 0; loop--) { | |
456 | pcb->fid.vid = ntohl(*fp++); | |
457 | pcb->fid.vnode = ntohl(*fp++); | |
458 | pcb->fid.unique = ntohl(*fp++); | |
459 | if (bp) { | |
460 | pcb->version = ntohl(*bp++); | |
461 | pcb->expiry = ntohl(*bp++); | |
462 | pcb->type = ntohl(*bp++); | |
463 | } | |
464 | else { | |
465 | pcb->version = 0; | |
466 | pcb->expiry = 0; | |
467 | pcb->type = AFSCM_CB_UNTYPED; | |
468 | } | |
469 | pcb++; | |
470 | } | |
471 | ||
472 | /* invoke the actual service routine */ | |
473 | ret = SRXAFSCM_CallBack(server, count, cb); | |
474 | if (ret < 0) | |
475 | break; | |
476 | } | |
477 | ||
478 | /* send the reply */ | |
479 | ret = rxrpc_call_write_data(call, 0, NULL, RXRPC_LAST_PACKET, | |
480 | GFP_KERNEL, 0, &count); | |
481 | if (ret < 0) | |
482 | break; | |
483 | break; | |
484 | ||
485 | /* operation complete */ | |
486 | case RXRPC_CSTATE_COMPLETE: | |
487 | call->app_user = NULL; | |
488 | removed = 0; | |
489 | spin_lock(&afscm_calls_lock); | |
490 | if (!list_empty(&call->app_link)) { | |
491 | list_del_init(&call->app_link); | |
492 | removed = 1; | |
493 | } | |
494 | spin_unlock(&afscm_calls_lock); | |
495 | ||
496 | if (removed) | |
497 | rxrpc_put_call(call); | |
498 | break; | |
499 | ||
500 | /* operation terminated on error */ | |
501 | case RXRPC_CSTATE_ERROR: | |
502 | call->app_user = NULL; | |
503 | break; | |
504 | ||
505 | default: | |
506 | break; | |
507 | } | |
508 | ||
509 | if (ret < 0) | |
510 | rxrpc_call_abort(call, ret); | |
511 | ||
512 | afs_put_server(server); | |
513 | ||
514 | _leave(" = %d", ret); | |
515 | ||
516 | } /* end _SRXAFSCM_CallBack() */ | |
517 | ||
518 | /*****************************************************************************/ | |
519 | /* | |
520 | * handle the fileserver asking us to initialise our callback state | |
521 | */ | |
522 | static void _SRXAFSCM_InitCallBackState(struct rxrpc_call *call) | |
523 | { | |
524 | struct afs_server *server; | |
525 | size_t count; | |
526 | int ret = 0, removed; | |
527 | ||
528 | _enter("%p{acs=%s}", call, rxrpc_call_states[call->app_call_state]); | |
529 | ||
530 | server = afs_server_get_from_peer(call->conn->peer); | |
531 | ||
532 | switch (call->app_call_state) { | |
533 | /* we've received the last packet - drain all the data from the | |
534 | * call */ | |
535 | case RXRPC_CSTATE_SRVR_GOT_ARGS: | |
536 | /* shouldn't be any args */ | |
537 | ret = -EBADMSG; | |
538 | break; | |
539 | ||
540 | /* send the reply when asked for it */ | |
541 | case RXRPC_CSTATE_SRVR_SND_REPLY: | |
542 | /* invoke the actual service routine */ | |
543 | ret = SRXAFSCM_InitCallBackState(server); | |
544 | if (ret < 0) | |
545 | break; | |
546 | ||
547 | ret = rxrpc_call_write_data(call, 0, NULL, RXRPC_LAST_PACKET, | |
548 | GFP_KERNEL, 0, &count); | |
549 | if (ret < 0) | |
550 | break; | |
551 | break; | |
552 | ||
553 | /* operation complete */ | |
554 | case RXRPC_CSTATE_COMPLETE: | |
555 | call->app_user = NULL; | |
556 | removed = 0; | |
557 | spin_lock(&afscm_calls_lock); | |
558 | if (!list_empty(&call->app_link)) { | |
559 | list_del_init(&call->app_link); | |
560 | removed = 1; | |
561 | } | |
562 | spin_unlock(&afscm_calls_lock); | |
563 | ||
564 | if (removed) | |
565 | rxrpc_put_call(call); | |
566 | break; | |
567 | ||
568 | /* operation terminated on error */ | |
569 | case RXRPC_CSTATE_ERROR: | |
570 | call->app_user = NULL; | |
571 | break; | |
572 | ||
573 | default: | |
574 | break; | |
575 | } | |
576 | ||
577 | if (ret < 0) | |
578 | rxrpc_call_abort(call, ret); | |
579 | ||
580 | afs_put_server(server); | |
581 | ||
582 | _leave(" = %d", ret); | |
583 | ||
584 | } /* end _SRXAFSCM_InitCallBackState() */ | |
585 | ||
586 | /*****************************************************************************/ | |
587 | /* | |
588 | * handle a probe from a fileserver | |
589 | */ | |
590 | static void _SRXAFSCM_Probe(struct rxrpc_call *call) | |
591 | { | |
592 | struct afs_server *server; | |
593 | size_t count; | |
594 | int ret = 0, removed; | |
595 | ||
596 | _enter("%p{acs=%s}", call, rxrpc_call_states[call->app_call_state]); | |
597 | ||
598 | server = afs_server_get_from_peer(call->conn->peer); | |
599 | ||
600 | switch (call->app_call_state) { | |
601 | /* we've received the last packet - drain all the data from the | |
602 | * call */ | |
603 | case RXRPC_CSTATE_SRVR_GOT_ARGS: | |
604 | /* shouldn't be any args */ | |
605 | ret = -EBADMSG; | |
606 | break; | |
607 | ||
608 | /* send the reply when asked for it */ | |
609 | case RXRPC_CSTATE_SRVR_SND_REPLY: | |
610 | /* invoke the actual service routine */ | |
611 | ret = SRXAFSCM_Probe(server); | |
612 | if (ret < 0) | |
613 | break; | |
614 | ||
615 | ret = rxrpc_call_write_data(call, 0, NULL, RXRPC_LAST_PACKET, | |
616 | GFP_KERNEL, 0, &count); | |
617 | if (ret < 0) | |
618 | break; | |
619 | break; | |
620 | ||
621 | /* operation complete */ | |
622 | case RXRPC_CSTATE_COMPLETE: | |
623 | call->app_user = NULL; | |
624 | removed = 0; | |
625 | spin_lock(&afscm_calls_lock); | |
626 | if (!list_empty(&call->app_link)) { | |
627 | list_del_init(&call->app_link); | |
628 | removed = 1; | |
629 | } | |
630 | spin_unlock(&afscm_calls_lock); | |
631 | ||
632 | if (removed) | |
633 | rxrpc_put_call(call); | |
634 | break; | |
635 | ||
636 | /* operation terminated on error */ | |
637 | case RXRPC_CSTATE_ERROR: | |
638 | call->app_user = NULL; | |
639 | break; | |
640 | ||
641 | default: | |
642 | break; | |
643 | } | |
644 | ||
645 | if (ret < 0) | |
646 | rxrpc_call_abort(call, ret); | |
647 | ||
648 | afs_put_server(server); | |
649 | ||
650 | _leave(" = %d", ret); | |
651 | ||
652 | } /* end _SRXAFSCM_Probe() */ |