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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 unsigned long timeout = 0;
56 rxrpc_seq_t acks_hard_ack;
57 char lbuff[50], rbuff[50];
58 u64 wtmp;
59
60 if (v == &rxnet->calls) {
61 seq_puts(seq,
62 "Proto Local "
63 " Remote "
64 " SvID ConnID CallID End Use State Abort "
65 " DebugId TxSeq TW RxSeq RW RxSerial CW RxTimo\n");
66 return 0;
67 }
68
69 call = list_entry(v, struct rxrpc_call, link);
70
71 local = call->local;
72 if (local)
73 sprintf(lbuff, "%pISpc", &local->srx.transport);
74 else
75 strcpy(lbuff, "no_local");
76
77 sprintf(rbuff, "%pISpc", &call->dest_srx.transport);
78
79 state = rxrpc_call_state(call);
80 if (state != RXRPC_CALL_SERVER_PREALLOC) {
81 timeout = READ_ONCE(call->expect_rx_by);
82 timeout -= jiffies;
83 }
84
85 acks_hard_ack = READ_ONCE(call->acks_hard_ack);
86 wtmp = atomic64_read_acquire(&call->ackr_window);
87 seq_printf(seq,
88 "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u"
89 " %-8.8s %08x %08x %08x %02x %08x %02x %08x %02x %06lx\n",
90 lbuff,
91 rbuff,
92 call->dest_srx.srx_service,
93 call->cid,
94 call->call_id,
95 rxrpc_is_service_call(call) ? "Svc" : "Clt",
96 refcount_read(&call->ref),
97 rxrpc_call_states[state],
98 call->abort_code,
99 call->debug_id,
100 acks_hard_ack, READ_ONCE(call->tx_top) - acks_hard_ack,
101 lower_32_bits(wtmp), upper_32_bits(wtmp) - lower_32_bits(wtmp),
102 call->rx_serial,
103 call->cong_cwnd,
104 timeout);
105
106 return 0;
107}
108
109const struct seq_operations rxrpc_call_seq_ops = {
110 .start = rxrpc_call_seq_start,
111 .next = rxrpc_call_seq_next,
112 .stop = rxrpc_call_seq_stop,
113 .show = rxrpc_call_seq_show,
114};
115
116/*
117 * generate a list of extant virtual connections in /proc/net/rxrpc_conns
118 */
119static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
120 __acquires(rxnet->conn_lock)
121{
122 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
123
124 read_lock(&rxnet->conn_lock);
125 return seq_list_start_head(&rxnet->conn_proc_list, *_pos);
126}
127
128static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
129 loff_t *pos)
130{
131 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
132
133 return seq_list_next(v, &rxnet->conn_proc_list, pos);
134}
135
136static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
137 __releases(rxnet->conn_lock)
138{
139 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
140
141 read_unlock(&rxnet->conn_lock);
142}
143
144static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
145{
146 struct rxrpc_connection *conn;
147 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
148 const char *state;
149 char lbuff[50], rbuff[50];
150
151 if (v == &rxnet->conn_proc_list) {
152 seq_puts(seq,
153 "Proto Local "
154 " Remote "
155 " SvID ConnID End Ref Act State Key "
156 " Serial ISerial CallId0 CallId1 CallId2 CallId3\n"
157 );
158 return 0;
159 }
160
161 conn = list_entry(v, struct rxrpc_connection, proc_link);
162 if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) {
163 strcpy(lbuff, "no_local");
164 strcpy(rbuff, "no_connection");
165 goto print;
166 }
167
168 sprintf(lbuff, "%pISpc", &conn->local->srx.transport);
169 sprintf(rbuff, "%pISpc", &conn->peer->srx.transport);
170print:
171 state = rxrpc_is_conn_aborted(conn) ?
172 rxrpc_call_completions[conn->completion] :
173 rxrpc_conn_states[conn->state];
174 seq_printf(seq,
175 "UDP %-47.47s %-47.47s %4x %08x %s %3u %3d"
176 " %s %08x %08x %08x %08x %08x %08x %08x\n",
177 lbuff,
178 rbuff,
179 conn->service_id,
180 conn->proto.cid,
181 rxrpc_conn_is_service(conn) ? "Svc" : "Clt",
182 refcount_read(&conn->ref),
183 atomic_read(&conn->active),
184 state,
185 key_serial(conn->key),
186 atomic_read(&conn->serial),
187 conn->hi_serial,
188 conn->channels[0].call_id,
189 conn->channels[1].call_id,
190 conn->channels[2].call_id,
191 conn->channels[3].call_id);
192
193 return 0;
194}
195
196const struct seq_operations rxrpc_connection_seq_ops = {
197 .start = rxrpc_connection_seq_start,
198 .next = rxrpc_connection_seq_next,
199 .stop = rxrpc_connection_seq_stop,
200 .show = rxrpc_connection_seq_show,
201};
202
203/*
204 * generate a list of extant virtual peers in /proc/net/rxrpc/peers
205 */
206static int rxrpc_peer_seq_show(struct seq_file *seq, void *v)
207{
208 struct rxrpc_peer *peer;
209 time64_t now;
210 char lbuff[50], rbuff[50];
211
212 if (v == SEQ_START_TOKEN) {
213 seq_puts(seq,
214 "Proto Local "
215 " Remote "
216 " Use SST MTU LastUse RTT RTO\n"
217 );
218 return 0;
219 }
220
221 peer = list_entry(v, struct rxrpc_peer, hash_link);
222
223 sprintf(lbuff, "%pISpc", &peer->local->srx.transport);
224
225 sprintf(rbuff, "%pISpc", &peer->srx.transport);
226
227 now = ktime_get_seconds();
228 seq_printf(seq,
229 "UDP %-47.47s %-47.47s %3u"
230 " %3u %5u %6llus %8u %8u\n",
231 lbuff,
232 rbuff,
233 refcount_read(&peer->ref),
234 peer->cong_ssthresh,
235 peer->mtu,
236 now - peer->last_tx_at,
237 peer->srtt_us >> 3,
238 jiffies_to_usecs(peer->rto_j));
239
240 return 0;
241}
242
243static void *rxrpc_peer_seq_start(struct seq_file *seq, loff_t *_pos)
244 __acquires(rcu)
245{
246 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
247 unsigned int bucket, n;
248 unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash);
249 void *p;
250
251 rcu_read_lock();
252
253 if (*_pos >= UINT_MAX)
254 return NULL;
255
256 n = *_pos & ((1U << shift) - 1);
257 bucket = *_pos >> shift;
258 for (;;) {
259 if (bucket >= HASH_SIZE(rxnet->peer_hash)) {
260 *_pos = UINT_MAX;
261 return NULL;
262 }
263 if (n == 0) {
264 if (bucket == 0)
265 return SEQ_START_TOKEN;
266 *_pos += 1;
267 n++;
268 }
269
270 p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1);
271 if (p)
272 return p;
273 bucket++;
274 n = 1;
275 *_pos = (bucket << shift) | n;
276 }
277}
278
279static void *rxrpc_peer_seq_next(struct seq_file *seq, void *v, loff_t *_pos)
280{
281 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
282 unsigned int bucket, n;
283 unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash);
284 void *p;
285
286 if (*_pos >= UINT_MAX)
287 return NULL;
288
289 bucket = *_pos >> shift;
290
291 p = seq_hlist_next_rcu(v, &rxnet->peer_hash[bucket], _pos);
292 if (p)
293 return p;
294
295 for (;;) {
296 bucket++;
297 n = 1;
298 *_pos = (bucket << shift) | n;
299
300 if (bucket >= HASH_SIZE(rxnet->peer_hash)) {
301 *_pos = UINT_MAX;
302 return NULL;
303 }
304 if (n == 0) {
305 *_pos += 1;
306 n++;
307 }
308
309 p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1);
310 if (p)
311 return p;
312 }
313}
314
315static void rxrpc_peer_seq_stop(struct seq_file *seq, void *v)
316 __releases(rcu)
317{
318 rcu_read_unlock();
319}
320
321
322const struct seq_operations rxrpc_peer_seq_ops = {
323 .start = rxrpc_peer_seq_start,
324 .next = rxrpc_peer_seq_next,
325 .stop = rxrpc_peer_seq_stop,
326 .show = rxrpc_peer_seq_show,
327};
328
329/*
330 * Generate a list of extant virtual local endpoints in /proc/net/rxrpc/locals
331 */
332static int rxrpc_local_seq_show(struct seq_file *seq, void *v)
333{
334 struct rxrpc_local *local;
335 char lbuff[50];
336
337 if (v == SEQ_START_TOKEN) {
338 seq_puts(seq,
339 "Proto Local "
340 " Use Act RxQ\n");
341 return 0;
342 }
343
344 local = hlist_entry(v, struct rxrpc_local, link);
345
346 sprintf(lbuff, "%pISpc", &local->srx.transport);
347
348 seq_printf(seq,
349 "UDP %-47.47s %3u %3u %3u\n",
350 lbuff,
351 refcount_read(&local->ref),
352 atomic_read(&local->active_users),
353 local->rx_queue.qlen);
354
355 return 0;
356}
357
358static void *rxrpc_local_seq_start(struct seq_file *seq, loff_t *_pos)
359 __acquires(rcu)
360{
361 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
362 unsigned int n;
363
364 rcu_read_lock();
365
366 if (*_pos >= UINT_MAX)
367 return NULL;
368
369 n = *_pos;
370 if (n == 0)
371 return SEQ_START_TOKEN;
372
373 return seq_hlist_start_rcu(&rxnet->local_endpoints, n - 1);
374}
375
376static void *rxrpc_local_seq_next(struct seq_file *seq, void *v, loff_t *_pos)
377{
378 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
379
380 if (*_pos >= UINT_MAX)
381 return NULL;
382
383 return seq_hlist_next_rcu(v, &rxnet->local_endpoints, _pos);
384}
385
386static void rxrpc_local_seq_stop(struct seq_file *seq, void *v)
387 __releases(rcu)
388{
389 rcu_read_unlock();
390}
391
392const struct seq_operations rxrpc_local_seq_ops = {
393 .start = rxrpc_local_seq_start,
394 .next = rxrpc_local_seq_next,
395 .stop = rxrpc_local_seq_stop,
396 .show = rxrpc_local_seq_show,
397};
398
399/*
400 * Display stats in /proc/net/rxrpc/stats
401 */
402int rxrpc_stats_show(struct seq_file *seq, void *v)
403{
404 struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(seq));
405
406 seq_printf(seq,
407 "Data : send=%u sendf=%u fail=%u\n",
408 atomic_read(&rxnet->stat_tx_data_send),
409 atomic_read(&rxnet->stat_tx_data_send_frag),
410 atomic_read(&rxnet->stat_tx_data_send_fail));
411 seq_printf(seq,
412 "Data-Tx : nr=%u retrans=%u uf=%u cwr=%u\n",
413 atomic_read(&rxnet->stat_tx_data),
414 atomic_read(&rxnet->stat_tx_data_retrans),
415 atomic_read(&rxnet->stat_tx_data_underflow),
416 atomic_read(&rxnet->stat_tx_data_cwnd_reset));
417 seq_printf(seq,
418 "Data-Rx : nr=%u reqack=%u jumbo=%u\n",
419 atomic_read(&rxnet->stat_rx_data),
420 atomic_read(&rxnet->stat_rx_data_reqack),
421 atomic_read(&rxnet->stat_rx_data_jumbo));
422 seq_printf(seq,
423 "Ack : fill=%u send=%u skip=%u\n",
424 atomic_read(&rxnet->stat_tx_ack_fill),
425 atomic_read(&rxnet->stat_tx_ack_send),
426 atomic_read(&rxnet->stat_tx_ack_skip));
427 seq_printf(seq,
428 "Ack-Tx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n",
429 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_REQUESTED]),
430 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DUPLICATE]),
431 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]),
432 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_EXCEEDS_WINDOW]),
433 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_NOSPACE]),
434 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING]),
435 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING_RESPONSE]),
436 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DELAY]),
437 atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_IDLE]));
438 seq_printf(seq,
439 "Ack-Rx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n",
440 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_REQUESTED]),
441 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DUPLICATE]),
442 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]),
443 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_EXCEEDS_WINDOW]),
444 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_NOSPACE]),
445 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING]),
446 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING_RESPONSE]),
447 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DELAY]),
448 atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_IDLE]));
449 seq_printf(seq,
450 "Why-Req-A: acklost=%u already=%u mrtt=%u ortt=%u\n",
451 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_ack_lost]),
452 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_already_on]),
453 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_more_rtt]),
454 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_old_rtt]));
455 seq_printf(seq,
456 "Why-Req-A: nolast=%u retx=%u slows=%u smtxw=%u\n",
457 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_no_srv_last]),
458 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_retrans]),
459 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_slow_start]),
460 atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_small_txwin]));
461 seq_printf(seq,
462 "Buffers : txb=%u rxb=%u\n",
463 atomic_read(&rxrpc_nr_txbuf),
464 atomic_read(&rxrpc_n_rx_skbs));
465 seq_printf(seq,
466 "IO-thread: loops=%u\n",
467 atomic_read(&rxnet->stat_io_loop));
468 return 0;
469}
470
471/*
472 * Clear stats if /proc/net/rxrpc/stats is written to.
473 */
474int rxrpc_stats_clear(struct file *file, char *buf, size_t size)
475{
476 struct seq_file *m = file->private_data;
477 struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(m));
478
479 if (size > 1 || (size == 1 && buf[0] != '\n'))
480 return -EINVAL;
481
482 atomic_set(&rxnet->stat_tx_data, 0);
483 atomic_set(&rxnet->stat_tx_data_retrans, 0);
484 atomic_set(&rxnet->stat_tx_data_underflow, 0);
485 atomic_set(&rxnet->stat_tx_data_cwnd_reset, 0);
486 atomic_set(&rxnet->stat_tx_data_send, 0);
487 atomic_set(&rxnet->stat_tx_data_send_frag, 0);
488 atomic_set(&rxnet->stat_tx_data_send_fail, 0);
489 atomic_set(&rxnet->stat_rx_data, 0);
490 atomic_set(&rxnet->stat_rx_data_reqack, 0);
491 atomic_set(&rxnet->stat_rx_data_jumbo, 0);
492
493 atomic_set(&rxnet->stat_tx_ack_fill, 0);
494 atomic_set(&rxnet->stat_tx_ack_send, 0);
495 atomic_set(&rxnet->stat_tx_ack_skip, 0);
496 memset(&rxnet->stat_tx_acks, 0, sizeof(rxnet->stat_tx_acks));
497 memset(&rxnet->stat_rx_acks, 0, sizeof(rxnet->stat_rx_acks));
498
499 memset(&rxnet->stat_why_req_ack, 0, sizeof(rxnet->stat_why_req_ack));
500
501 atomic_set(&rxnet->stat_io_loop, 0);
502 return size;
503}
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}