Loading...
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] = "Client ",
16 [RXRPC_CONN_SERVICE_PREALLOC] = "SvPrealc",
17 [RXRPC_CONN_SERVICE_UNSECURED] = "SvUnsec ",
18 [RXRPC_CONN_SERVICE_CHALLENGING] = "SvChall ",
19 [RXRPC_CONN_SERVICE] = "SvSecure",
20 [RXRPC_CONN_REMOTELY_ABORTED] = "RmtAbort",
21 [RXRPC_CONN_LOCALLY_ABORTED] = "LocAbort",
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 __acquires(rxnet->call_lock)
30{
31 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
32
33 rcu_read_lock();
34 read_lock(&rxnet->call_lock);
35 return seq_list_start_head(&rxnet->calls, *_pos);
36}
37
38static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
39{
40 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
41
42 return seq_list_next(v, &rxnet->calls, pos);
43}
44
45static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
46 __releases(rxnet->call_lock)
47 __releases(rcu)
48{
49 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
50
51 read_unlock(&rxnet->call_lock);
52 rcu_read_unlock();
53}
54
55static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
56{
57 struct rxrpc_local *local;
58 struct rxrpc_sock *rx;
59 struct rxrpc_peer *peer;
60 struct rxrpc_call *call;
61 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
62 unsigned long timeout = 0;
63 rxrpc_seq_t tx_hard_ack, rx_hard_ack;
64 char lbuff[50], rbuff[50];
65
66 if (v == &rxnet->calls) {
67 seq_puts(seq,
68 "Proto Local "
69 " Remote "
70 " SvID ConnID CallID End Use State Abort "
71 " UserID TxSeq TW RxSeq RW RxSerial RxTimo\n");
72 return 0;
73 }
74
75 call = list_entry(v, struct rxrpc_call, link);
76
77 rx = rcu_dereference(call->socket);
78 if (rx) {
79 local = READ_ONCE(rx->local);
80 if (local)
81 sprintf(lbuff, "%pISpc", &local->srx.transport);
82 else
83 strcpy(lbuff, "no_local");
84 } else {
85 strcpy(lbuff, "no_socket");
86 }
87
88 peer = call->peer;
89 if (peer)
90 sprintf(rbuff, "%pISpc", &peer->srx.transport);
91 else
92 strcpy(rbuff, "no_connection");
93
94 if (call->state != RXRPC_CALL_SERVER_PREALLOC) {
95 timeout = READ_ONCE(call->expect_rx_by);
96 timeout -= jiffies;
97 }
98
99 tx_hard_ack = READ_ONCE(call->tx_hard_ack);
100 rx_hard_ack = READ_ONCE(call->rx_hard_ack);
101 seq_printf(seq,
102 "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u"
103 " %-8.8s %08x %lx %08x %02x %08x %02x %08x %06lx\n",
104 lbuff,
105 rbuff,
106 call->service_id,
107 call->cid,
108 call->call_id,
109 rxrpc_is_service_call(call) ? "Svc" : "Clt",
110 atomic_read(&call->usage),
111 rxrpc_call_states[call->state],
112 call->abort_code,
113 call->user_call_ID,
114 tx_hard_ack, READ_ONCE(call->tx_top) - tx_hard_ack,
115 rx_hard_ack, READ_ONCE(call->rx_top) - rx_hard_ack,
116 call->rx_serial,
117 timeout);
118
119 return 0;
120}
121
122const struct seq_operations rxrpc_call_seq_ops = {
123 .start = rxrpc_call_seq_start,
124 .next = rxrpc_call_seq_next,
125 .stop = rxrpc_call_seq_stop,
126 .show = rxrpc_call_seq_show,
127};
128
129/*
130 * generate a list of extant virtual connections in /proc/net/rxrpc_conns
131 */
132static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
133 __acquires(rxnet->conn_lock)
134{
135 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
136
137 read_lock(&rxnet->conn_lock);
138 return seq_list_start_head(&rxnet->conn_proc_list, *_pos);
139}
140
141static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
142 loff_t *pos)
143{
144 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
145
146 return seq_list_next(v, &rxnet->conn_proc_list, pos);
147}
148
149static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
150 __releases(rxnet->conn_lock)
151{
152 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
153
154 read_unlock(&rxnet->conn_lock);
155}
156
157static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
158{
159 struct rxrpc_connection *conn;
160 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
161 char lbuff[50], rbuff[50];
162
163 if (v == &rxnet->conn_proc_list) {
164 seq_puts(seq,
165 "Proto Local "
166 " Remote "
167 " SvID ConnID End Use State Key "
168 " Serial ISerial\n"
169 );
170 return 0;
171 }
172
173 conn = list_entry(v, struct rxrpc_connection, proc_link);
174 if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) {
175 strcpy(lbuff, "no_local");
176 strcpy(rbuff, "no_connection");
177 goto print;
178 }
179
180 sprintf(lbuff, "%pISpc", &conn->params.local->srx.transport);
181
182 sprintf(rbuff, "%pISpc", &conn->params.peer->srx.transport);
183print:
184 seq_printf(seq,
185 "UDP %-47.47s %-47.47s %4x %08x %s %3u"
186 " %s %08x %08x %08x %08x %08x %08x %08x\n",
187 lbuff,
188 rbuff,
189 conn->service_id,
190 conn->proto.cid,
191 rxrpc_conn_is_service(conn) ? "Svc" : "Clt",
192 atomic_read(&conn->usage),
193 rxrpc_conn_states[conn->state],
194 key_serial(conn->params.key),
195 atomic_read(&conn->serial),
196 conn->hi_serial,
197 conn->channels[0].call_id,
198 conn->channels[1].call_id,
199 conn->channels[2].call_id,
200 conn->channels[3].call_id);
201
202 return 0;
203}
204
205const struct seq_operations rxrpc_connection_seq_ops = {
206 .start = rxrpc_connection_seq_start,
207 .next = rxrpc_connection_seq_next,
208 .stop = rxrpc_connection_seq_stop,
209 .show = rxrpc_connection_seq_show,
210};
211
212/*
213 * generate a list of extant virtual peers in /proc/net/rxrpc/peers
214 */
215static int rxrpc_peer_seq_show(struct seq_file *seq, void *v)
216{
217 struct rxrpc_peer *peer;
218 time64_t now;
219 char lbuff[50], rbuff[50];
220
221 if (v == SEQ_START_TOKEN) {
222 seq_puts(seq,
223 "Proto Local "
224 " Remote "
225 " Use CW MTU LastUse RTT Rc\n"
226 );
227 return 0;
228 }
229
230 peer = list_entry(v, struct rxrpc_peer, hash_link);
231
232 sprintf(lbuff, "%pISpc", &peer->local->srx.transport);
233
234 sprintf(rbuff, "%pISpc", &peer->srx.transport);
235
236 now = ktime_get_seconds();
237 seq_printf(seq,
238 "UDP %-47.47s %-47.47s %3u"
239 " %3u %5u %6llus %12llu %2u\n",
240 lbuff,
241 rbuff,
242 atomic_read(&peer->usage),
243 peer->cong_cwnd,
244 peer->mtu,
245 now - peer->last_tx_at,
246 peer->rtt,
247 peer->rtt_cursor);
248
249 return 0;
250}
251
252static void *rxrpc_peer_seq_start(struct seq_file *seq, loff_t *_pos)
253 __acquires(rcu)
254{
255 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
256 unsigned int bucket, n;
257 unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash);
258 void *p;
259
260 rcu_read_lock();
261
262 if (*_pos >= UINT_MAX)
263 return NULL;
264
265 n = *_pos & ((1U << shift) - 1);
266 bucket = *_pos >> shift;
267 for (;;) {
268 if (bucket >= HASH_SIZE(rxnet->peer_hash)) {
269 *_pos = UINT_MAX;
270 return NULL;
271 }
272 if (n == 0) {
273 if (bucket == 0)
274 return SEQ_START_TOKEN;
275 *_pos += 1;
276 n++;
277 }
278
279 p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1);
280 if (p)
281 return p;
282 bucket++;
283 n = 1;
284 *_pos = (bucket << shift) | n;
285 }
286}
287
288static void *rxrpc_peer_seq_next(struct seq_file *seq, void *v, loff_t *_pos)
289{
290 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
291 unsigned int bucket, n;
292 unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash);
293 void *p;
294
295 if (*_pos >= UINT_MAX)
296 return NULL;
297
298 bucket = *_pos >> shift;
299
300 p = seq_hlist_next_rcu(v, &rxnet->peer_hash[bucket], _pos);
301 if (p)
302 return p;
303
304 for (;;) {
305 bucket++;
306 n = 1;
307 *_pos = (bucket << shift) | n;
308
309 if (bucket >= HASH_SIZE(rxnet->peer_hash)) {
310 *_pos = UINT_MAX;
311 return NULL;
312 }
313 if (n == 0) {
314 *_pos += 1;
315 n++;
316 }
317
318 p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1);
319 if (p)
320 return p;
321 }
322}
323
324static void rxrpc_peer_seq_stop(struct seq_file *seq, void *v)
325 __releases(rcu)
326{
327 rcu_read_unlock();
328}
329
330
331const struct seq_operations rxrpc_peer_seq_ops = {
332 .start = rxrpc_peer_seq_start,
333 .next = rxrpc_peer_seq_next,
334 .stop = rxrpc_peer_seq_stop,
335 .show = rxrpc_peer_seq_show,
336};
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}