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