1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* /proc/net/ support for AF_RXRPC
3 *
4 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells ([email protected])
6 */
7
8 #include <linux/module.h>
9 #include <net/sock.h>
10 #include <net/af_rxrpc.h>
11 #include "ar-internal.h"
12
13 static const char *const rxrpc_conn_states[RXRPC_CONN__NR_STATES] = {
14 [RXRPC_CONN_UNUSED] = "Unused ",
15 [RXRPC_CONN_CLIENT_UNSECURED] = "ClUnsec ",
16 [RXRPC_CONN_CLIENT] = "Client ",
17 [RXRPC_CONN_SERVICE_PREALLOC] = "SvPrealc",
18 [RXRPC_CONN_SERVICE_UNSECURED] = "SvUnsec ",
19 [RXRPC_CONN_SERVICE_CHALLENGING] = "SvChall ",
20 [RXRPC_CONN_SERVICE] = "SvSecure",
21 [RXRPC_CONN_ABORTED] = "Aborted ",
22 };
23
24 /*
25 * generate a list of extant and dead calls in /proc/net/rxrpc_calls
26 */
rxrpc_call_seq_start(struct seq_file * seq,loff_t * _pos)27 static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos)
28 __acquires(rcu)
29 {
30 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
31
32 rcu_read_lock();
33 return seq_list_start_head_rcu(&rxnet->calls, *_pos);
34 }
35
rxrpc_call_seq_next(struct seq_file * seq,void * v,loff_t * pos)36 static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
37 {
38 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
39
40 return seq_list_next_rcu(v, &rxnet->calls, pos);
41 }
42
rxrpc_call_seq_stop(struct seq_file * seq,void * v)43 static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
44 __releases(rcu)
45 {
46 rcu_read_unlock();
47 }
48
rxrpc_call_seq_show(struct seq_file * seq,void * v)49 static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
50 {
51 struct rxrpc_local *local;
52 struct rxrpc_call *call;
53 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
54 enum rxrpc_call_state state;
55 rxrpc_seq_t tx_bottom;
56 char lbuff[50], rbuff[50];
57 long timeout = 0;
58
59 if (v == &rxnet->calls) {
60 seq_puts(seq,
61 "Proto Local "
62 " Remote "
63 " SvID ConnID CallID End Use State Abort "
64 " DebugId TxSeq TW RxSeq RW RxSerial CW RxTimo\n");
65 return 0;
66 }
67
68 call = list_entry(v, struct rxrpc_call, link);
69
70 local = call->local;
71 if (local)
72 sprintf(lbuff, "%pISpc", &local->srx.transport);
73 else
74 strcpy(lbuff, "no_local");
75
76 sprintf(rbuff, "%pISpc", &call->dest_srx.transport);
77
78 state = rxrpc_call_state(call);
79 if (state != RXRPC_CALL_SERVER_PREALLOC)
80 timeout = ktime_ms_delta(READ_ONCE(call->expect_rx_by), ktime_get_real());
81
82 tx_bottom = READ_ONCE(call->tx_bottom);
83 seq_printf(seq,
84 "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u"
85 " %-8.8s %08x %08x %08x %02x %08x %02x %08x %02x %06lx\n",
86 lbuff,
87 rbuff,
88 call->dest_srx.srx_service,
89 call->cid,
90 call->call_id,
91 rxrpc_is_service_call(call) ? "Svc" : "Clt",
92 refcount_read(&call->ref),
93 rxrpc_call_states[state],
94 call->abort_code,
95 call->debug_id,
96 tx_bottom, READ_ONCE(call->tx_top) - tx_bottom,
97 call->ackr_window, call->ackr_wtop - call->ackr_window,
98 call->rx_serial,
99 call->cong_cwnd,
100 timeout);
101
102 return 0;
103 }
104
105 const struct seq_operations rxrpc_call_seq_ops = {
106 .start = rxrpc_call_seq_start,
107 .next = rxrpc_call_seq_next,
108 .stop = rxrpc_call_seq_stop,
109 .show = rxrpc_call_seq_show,
110 };
111
112 /*
113 * generate a list of extant virtual connections in /proc/net/rxrpc_conns
114 */
rxrpc_connection_seq_start(struct seq_file * seq,loff_t * _pos)115 static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
116 __acquires(rxnet->conn_lock)
117 {
118 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
119
120 read_lock(&rxnet->conn_lock);
121 return seq_list_start_head(&rxnet->conn_proc_list, *_pos);
122 }
123
rxrpc_connection_seq_next(struct seq_file * seq,void * v,loff_t * pos)124 static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
125 loff_t *pos)
126 {
127 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
128
129 return seq_list_next(v, &rxnet->conn_proc_list, pos);
130 }
131
rxrpc_connection_seq_stop(struct seq_file * seq,void * v)132 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
133 __releases(rxnet->conn_lock)
134 {
135 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
136
137 read_unlock(&rxnet->conn_lock);
138 }
139
rxrpc_connection_seq_show(struct seq_file * seq,void * v)140 static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
141 {
142 struct rxrpc_connection *conn;
143 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
144 const char *state;
145 char lbuff[50], rbuff[50];
146
147 if (v == &rxnet->conn_proc_list) {
148 seq_puts(seq,
149 "Proto Local "
150 " Remote "
151 " SvID ConnID End Ref Act State Key "
152 " Serial ISerial CallId0 CallId1 CallId2 CallId3\n"
153 );
154 return 0;
155 }
156
157 conn = list_entry(v, struct rxrpc_connection, proc_link);
158 if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) {
159 strcpy(lbuff, "no_local");
160 strcpy(rbuff, "no_connection");
161 goto print;
162 }
163
164 sprintf(lbuff, "%pISpc", &conn->local->srx.transport);
165 sprintf(rbuff, "%pISpc", &conn->peer->srx.transport);
166 print:
167 state = rxrpc_is_conn_aborted(conn) ?
168 rxrpc_call_completions[conn->completion] :
169 rxrpc_conn_states[conn->state];
170 seq_printf(seq,
171 "UDP %-47.47s %-47.47s %4x %08x %s %3u %3d"
172 " %s %08x %08x %08x %08x %08x %08x %08x\n",
173 lbuff,
174 rbuff,
175 conn->service_id,
176 conn->proto.cid,
177 rxrpc_conn_is_service(conn) ? "Svc" : "Clt",
178 refcount_read(&conn->ref),
179 atomic_read(&conn->active),
180 state,
181 key_serial(conn->key),
182 conn->tx_serial,
183 conn->hi_serial,
184 conn->channels[0].call_id,
185 conn->channels[1].call_id,
186 conn->channels[2].call_id,
187 conn->channels[3].call_id);
188
189 return 0;
190 }
191
192 const struct seq_operations rxrpc_connection_seq_ops = {
193 .start = rxrpc_connection_seq_start,
194 .next = rxrpc_connection_seq_next,
195 .stop = rxrpc_connection_seq_stop,
196 .show = rxrpc_connection_seq_show,
197 };
198
199 /*
200 * generate a list of extant virtual bundles in /proc/net/rxrpc/bundles
201 */
rxrpc_bundle_seq_start(struct seq_file * seq,loff_t * _pos)202 static void *rxrpc_bundle_seq_start(struct seq_file *seq, loff_t *_pos)
203 __acquires(rxnet->conn_lock)
204 {
205 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
206
207 read_lock(&rxnet->conn_lock);
208 return seq_list_start_head(&rxnet->bundle_proc_list, *_pos);
209 }
210
rxrpc_bundle_seq_next(struct seq_file * seq,void * v,loff_t * pos)211 static void *rxrpc_bundle_seq_next(struct seq_file *seq, void *v,
212 loff_t *pos)
213 {
214 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
215
216 return seq_list_next(v, &rxnet->bundle_proc_list, pos);
217 }
218
rxrpc_bundle_seq_stop(struct seq_file * seq,void * v)219 static void rxrpc_bundle_seq_stop(struct seq_file *seq, void *v)
220 __releases(rxnet->conn_lock)
221 {
222 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
223
224 read_unlock(&rxnet->conn_lock);
225 }
226
rxrpc_bundle_seq_show(struct seq_file * seq,void * v)227 static int rxrpc_bundle_seq_show(struct seq_file *seq, void *v)
228 {
229 struct rxrpc_bundle *bundle;
230 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
231 char lbuff[50], rbuff[50];
232
233 if (v == &rxnet->bundle_proc_list) {
234 seq_puts(seq,
235 "Proto Local "
236 " Remote "
237 " SvID Ref Act Flg Key |"
238 " Bundle Conn_0 Conn_1 Conn_2 Conn_3\n"
239 );
240 return 0;
241 }
242
243 bundle = list_entry(v, struct rxrpc_bundle, proc_link);
244
245 sprintf(lbuff, "%pISpc", &bundle->local->srx.transport);
246 sprintf(rbuff, "%pISpc", &bundle->peer->srx.transport);
247 seq_printf(seq,
248 "UDP %-47.47s %-47.47s %4x %3u %3d"
249 " %c%c%c %08x | %08x %08x %08x %08x %08x\n",
250 lbuff,
251 rbuff,
252 bundle->service_id,
253 refcount_read(&bundle->ref),
254 atomic_read(&bundle->active),
255 bundle->try_upgrade ? 'U' : '-',
256 bundle->exclusive ? 'e' : '-',
257 bundle->upgrade ? 'u' : '-',
258 key_serial(bundle->key),
259 bundle->debug_id,
260 bundle->conn_ids[0],
261 bundle->conn_ids[1],
262 bundle->conn_ids[2],
263 bundle->conn_ids[3]);
264
265 return 0;
266 }
267
268 const struct seq_operations rxrpc_bundle_seq_ops = {
269 .start = rxrpc_bundle_seq_start,
270 .next = rxrpc_bundle_seq_next,
271 .stop = rxrpc_bundle_seq_stop,
272 .show = rxrpc_bundle_seq_show,
273 };
274
275 /*
276 * generate a list of extant virtual peers in /proc/net/rxrpc/peers
277 */
rxrpc_peer_seq_show(struct seq_file * seq,void * v)278 static int rxrpc_peer_seq_show(struct seq_file *seq, void *v)
279 {
280 struct rxrpc_peer *peer;
281 time64_t now;
282 char lbuff[50], rbuff[50];
283
284 if (v == SEQ_START_TOKEN) {
285 seq_puts(seq,
286 "Proto Local Remote Use SST Maxd LastUse RTT RTO\n"
287 );
288 return 0;
289 }
290
291 peer = list_entry(v, struct rxrpc_peer, hash_link);
292
293 sprintf(lbuff, "%pISpc", &peer->local->srx.transport);
294
295 sprintf(rbuff, "%pISpc", &peer->srx.transport);
296
297 now = ktime_get_seconds();
298 seq_printf(seq,
299 "UDP %-47.47s %-47.47s %3u %4u %5u %6llus %8d %8d\n",
300 lbuff,
301 rbuff,
302 refcount_read(&peer->ref),
303 peer->cong_ssthresh,
304 peer->max_data,
305 now - peer->last_tx_at,
306 READ_ONCE(peer->recent_srtt_us),
307 READ_ONCE(peer->recent_rto_us));
308
309 return 0;
310 }
311
rxrpc_peer_seq_start(struct seq_file * seq,loff_t * _pos)312 static void *rxrpc_peer_seq_start(struct seq_file *seq, loff_t *_pos)
313 __acquires(rcu)
314 {
315 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
316 unsigned int bucket, n;
317 unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash);
318 void *p;
319
320 rcu_read_lock();
321
322 if (*_pos >= UINT_MAX)
323 return NULL;
324
325 n = *_pos & ((1U << shift) - 1);
326 bucket = *_pos >> shift;
327 for (;;) {
328 if (bucket >= HASH_SIZE(rxnet->peer_hash)) {
329 *_pos = UINT_MAX;
330 return NULL;
331 }
332 if (n == 0) {
333 if (bucket == 0)
334 return SEQ_START_TOKEN;
335 *_pos += 1;
336 n++;
337 }
338
339 p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1);
340 if (p)
341 return p;
342 bucket++;
343 n = 1;
344 *_pos = (bucket << shift) | n;
345 }
346 }
347
rxrpc_peer_seq_next(struct seq_file * seq,void * v,loff_t * _pos)348 static void *rxrpc_peer_seq_next(struct seq_file *seq, void *v, loff_t *_pos)
349 {
350 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
351 unsigned int bucket, n;
352 unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash);
353 void *p;
354
355 if (*_pos >= UINT_MAX)
356 return NULL;
357
358 bucket = *_pos >> shift;
359
360 p = seq_hlist_next_rcu(v, &rxnet->peer_hash[bucket], _pos);
361 if (p)
362 return p;
363
364 for (;;) {
365 bucket++;
366 n = 1;
367 *_pos = (bucket << shift) | n;
368
369 if (bucket >= HASH_SIZE(rxnet->peer_hash)) {
370 *_pos = UINT_MAX;
371 return NULL;
372 }
373 if (n == 0) {
374 *_pos += 1;
375 n++;
376 }
377
378 p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1);
379 if (p)
380 return p;
381 }
382 }
383
rxrpc_peer_seq_stop(struct seq_file * seq,void * v)384 static void rxrpc_peer_seq_stop(struct seq_file *seq, void *v)
385 __releases(rcu)
386 {
387 rcu_read_unlock();
388 }
389
390
391 const struct seq_operations rxrpc_peer_seq_ops = {
392 .start = rxrpc_peer_seq_start,
393 .next = rxrpc_peer_seq_next,
394 .stop = rxrpc_peer_seq_stop,
395 .show = rxrpc_peer_seq_show,
396 };
397
398 /*
399 * Generate a list of extant virtual local endpoints in /proc/net/rxrpc/locals
400 */
rxrpc_local_seq_show(struct seq_file * seq,void * v)401 static int rxrpc_local_seq_show(struct seq_file *seq, void *v)
402 {
403 struct rxrpc_local *local;
404 char lbuff[50];
405
406 if (v == SEQ_START_TOKEN) {
407 seq_puts(seq,
408 "Proto Local "
409 " Use Act RxQ\n");
410 return 0;
411 }
412
413 local = hlist_entry(v, struct rxrpc_local, link);
414
415 sprintf(lbuff, "%pISpc", &local->srx.transport);
416
417 seq_printf(seq,
418 "UDP %-47.47s %3u %3u %3u\n",
419 lbuff,
420 refcount_read(&local->ref),
421 atomic_read(&local->active_users),
422 local->rx_queue.qlen);
423
424 return 0;
425 }
426
rxrpc_local_seq_start(struct seq_file * seq,loff_t * _pos)427 static void *rxrpc_local_seq_start(struct seq_file *seq, loff_t *_pos)
428 __acquires(rcu)
429 {
430 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
431 unsigned int n;
432
433 rcu_read_lock();
434
435 if (*_pos >= UINT_MAX)
436 return NULL;
437
438 n = *_pos;
439 if (n == 0)
440 return SEQ_START_TOKEN;
441
442 return seq_hlist_start_rcu(&rxnet->local_endpoints, n - 1);
443 }
444
rxrpc_local_seq_next(struct seq_file * seq,void * v,loff_t * _pos)445 static void *rxrpc_local_seq_next(struct seq_file *seq, void *v, loff_t *_pos)
446 {
447 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
448
449 if (*_pos >= UINT_MAX)
450 return NULL;
451
452 return seq_hlist_next_rcu(v, &rxnet->local_endpoints, _pos);
453 }
454
rxrpc_local_seq_stop(struct seq_file * seq,void * v)455 static void rxrpc_local_seq_stop(struct seq_file *seq, void *v)
456 __releases(rcu)
457 {
458 rcu_read_unlock();
459 }
460
461 const struct seq_operations rxrpc_local_seq_ops = {
462 .start = rxrpc_local_seq_start,
463 .next = rxrpc_local_seq_next,
464 .stop = rxrpc_local_seq_stop,
465 .show = rxrpc_local_seq_show,
466 };
467
468 /*
469 * Display stats in /proc/net/rxrpc/stats
470 */
rxrpc_stats_show(struct seq_file * seq,void * v)471 int rxrpc_stats_show(struct seq_file *seq, void *v)
472 {
473 struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(seq));
474
475 seq_printf(seq,
476 "Data : send=%u sendf=%u fail=%u emsz=%u\n",
477 atomic_read(&rxnet->stat_tx_data_send),
478 atomic_read(&rxnet->stat_tx_data_send_frag),
479 atomic_read(&rxnet->stat_tx_data_send_fail),
480 atomic_read(&rxnet->stat_tx_data_send_msgsize));
481 seq_printf(seq,
482 "Data-Tx : nr=%u retrans=%u uf=%u cwr=%u\n",
483 atomic_read(&rxnet->stat_tx_data),
484 atomic_read(&rxnet->stat_tx_data_retrans),
485 atomic_read(&rxnet->stat_tx_data_underflow),
486 atomic_read(&rxnet->stat_tx_data_cwnd_reset));
487 seq_printf(seq,
488 "Data-Rx : nr=%u reqack=%u jumbo=%u\n",
489 atomic_read(&rxnet->stat_rx_data),
490 atomic_read(&rxnet->stat_rx_data_reqack),
491 atomic_read(&rxnet->stat_rx_data_jumbo));
492 seq_printf(seq,
493 "Ack : fill=%u send=%u skip=%u\n",
494 atomic_read(&rxnet->stat_tx_ack_fill),
495 atomic_read(&rxnet->stat_tx_ack_send),
496 atomic_read(&rxnet->stat_tx_ack_skip));
497 seq_printf(seq,
498 "Ack-Tx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n",
499 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_REQUESTED]),
500 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DUPLICATE]),
501 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]),
502 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_EXCEEDS_WINDOW]),
503 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_NOSPACE]),
504 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING]),
505 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING_RESPONSE]),
506 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DELAY]),
507 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_IDLE]));
508 seq_printf(seq,
509 "Ack-Rx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u z=%u\n",
510 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_REQUESTED]),
511 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DUPLICATE]),
512 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]),
513 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_EXCEEDS_WINDOW]),
514 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_NOSPACE]),
515 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING]),
516 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING_RESPONSE]),
517 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DELAY]),
518 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_IDLE]),
519 atomic_read(&rxnet->stat_rx_acks[0]));
520 seq_printf(seq,
521 "Why-Req-A: acklost=%u mrtt=%u ortt=%u stall=%u\n",
522 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_ack_lost]),
523 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_more_rtt]),
524 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_old_rtt]),
525 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_app_stall]));
526 seq_printf(seq,
527 "Why-Req-A: nolast=%u retx=%u slows=%u smtxw=%u\n",
528 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_no_srv_last]),
529 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_retrans]),
530 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_slow_start]),
531 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_small_txwin]));
532 seq_printf(seq,
533 "Jumbo-Tx : %u,%u,%u,%u,%u,%u,%u,%u,%u,%u\n",
534 atomic_read(&rxnet->stat_tx_jumbo[0]),
535 atomic_read(&rxnet->stat_tx_jumbo[1]),
536 atomic_read(&rxnet->stat_tx_jumbo[2]),
537 atomic_read(&rxnet->stat_tx_jumbo[3]),
538 atomic_read(&rxnet->stat_tx_jumbo[4]),
539 atomic_read(&rxnet->stat_tx_jumbo[5]),
540 atomic_read(&rxnet->stat_tx_jumbo[6]),
541 atomic_read(&rxnet->stat_tx_jumbo[7]),
542 atomic_read(&rxnet->stat_tx_jumbo[8]),
543 atomic_read(&rxnet->stat_tx_jumbo[9]));
544 seq_printf(seq,
545 "Jumbo-Rx : %u,%u,%u,%u,%u,%u,%u,%u,%u,%u\n",
546 atomic_read(&rxnet->stat_rx_jumbo[0]),
547 atomic_read(&rxnet->stat_rx_jumbo[1]),
548 atomic_read(&rxnet->stat_rx_jumbo[2]),
549 atomic_read(&rxnet->stat_rx_jumbo[3]),
550 atomic_read(&rxnet->stat_rx_jumbo[4]),
551 atomic_read(&rxnet->stat_rx_jumbo[5]),
552 atomic_read(&rxnet->stat_rx_jumbo[6]),
553 atomic_read(&rxnet->stat_rx_jumbo[7]),
554 atomic_read(&rxnet->stat_rx_jumbo[8]),
555 atomic_read(&rxnet->stat_rx_jumbo[9]));
556 seq_printf(seq,
557 "Buffers : txb=%u rxb=%u\n",
558 atomic_read(&rxrpc_nr_txbuf),
559 atomic_read(&rxrpc_n_rx_skbs));
560 seq_printf(seq,
561 "IO-thread: loops=%u\n",
562 atomic_read(&rxnet->stat_io_loop));
563 return 0;
564 }
565
566 /*
567 * Clear stats if /proc/net/rxrpc/stats is written to.
568 */
rxrpc_stats_clear(struct file * file,char * buf,size_t size)569 int rxrpc_stats_clear(struct file *file, char *buf, size_t size)
570 {
571 struct seq_file *m = file->private_data;
572 struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(m));
573
574 if (size > 1 || (size == 1 && buf[0] != '\n'))
575 return -EINVAL;
576
577 atomic_set(&rxnet->stat_tx_data, 0);
578 atomic_set(&rxnet->stat_tx_data_retrans, 0);
579 atomic_set(&rxnet->stat_tx_data_underflow, 0);
580 atomic_set(&rxnet->stat_tx_data_cwnd_reset, 0);
581 atomic_set(&rxnet->stat_tx_data_send, 0);
582 atomic_set(&rxnet->stat_tx_data_send_frag, 0);
583 atomic_set(&rxnet->stat_tx_data_send_fail, 0);
584 atomic_set(&rxnet->stat_rx_data, 0);
585 atomic_set(&rxnet->stat_rx_data_reqack, 0);
586 atomic_set(&rxnet->stat_rx_data_jumbo, 0);
587
588 atomic_set(&rxnet->stat_tx_ack_fill, 0);
589 atomic_set(&rxnet->stat_tx_ack_send, 0);
590 atomic_set(&rxnet->stat_tx_ack_skip, 0);
591 memset(&rxnet->stat_tx_acks, 0, sizeof(rxnet->stat_tx_acks));
592 memset(&rxnet->stat_rx_acks, 0, sizeof(rxnet->stat_rx_acks));
593 memset(&rxnet->stat_tx_jumbo, 0, sizeof(rxnet->stat_tx_jumbo));
594 memset(&rxnet->stat_rx_jumbo, 0, sizeof(rxnet->stat_rx_jumbo));
595
596 memset(&rxnet->stat_why_req_ack, 0, sizeof(rxnet->stat_why_req_ack));
597
598 atomic_set(&rxnet->stat_io_loop, 0);
599 return size;
600 }
601