12874c5fdSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
28c3e34a4SDavid Howells /* /proc/net/ support for AF_RXRPC
38c3e34a4SDavid Howells *
48c3e34a4SDavid Howells * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
58c3e34a4SDavid Howells * Written by David Howells (dhowells@redhat.com)
68c3e34a4SDavid Howells */
78c3e34a4SDavid Howells
88c3e34a4SDavid Howells #include <linux/module.h>
98c3e34a4SDavid Howells #include <net/sock.h>
108c3e34a4SDavid Howells #include <net/af_rxrpc.h>
118c3e34a4SDavid Howells #include "ar-internal.h"
128c3e34a4SDavid Howells
13bba304dbSDavid Howells static const char *const rxrpc_conn_states[RXRPC_CONN__NR_STATES] = {
148c3e34a4SDavid Howells [RXRPC_CONN_UNUSED] = "Unused ",
159d35d880SDavid Howells [RXRPC_CONN_CLIENT_UNSECURED] = "ClUnsec ",
168c3e34a4SDavid Howells [RXRPC_CONN_CLIENT] = "Client ",
1700e90712SDavid Howells [RXRPC_CONN_SERVICE_PREALLOC] = "SvPrealc",
18bba304dbSDavid Howells [RXRPC_CONN_SERVICE_UNSECURED] = "SvUnsec ",
19bba304dbSDavid Howells [RXRPC_CONN_SERVICE_CHALLENGING] = "SvChall ",
20bba304dbSDavid Howells [RXRPC_CONN_SERVICE] = "SvSecure",
21a00ce28bSDavid Howells [RXRPC_CONN_ABORTED] = "Aborted ",
228c3e34a4SDavid Howells };
238c3e34a4SDavid Howells
248c3e34a4SDavid Howells /*
258c3e34a4SDavid Howells * generate a list of extant and dead calls in /proc/net/rxrpc_calls
268c3e34a4SDavid Howells */
rxrpc_call_seq_start(struct seq_file * seq,loff_t * _pos)278c3e34a4SDavid Howells static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos)
2888f2a825SDavid Howells __acquires(rcu)
298c3e34a4SDavid Howells {
302baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
312baec2c3SDavid Howells
328d94aa38SDavid Howells rcu_read_lock();
33ad25f5cbSDavid Howells return seq_list_start_head_rcu(&rxnet->calls, *_pos);
348c3e34a4SDavid Howells }
358c3e34a4SDavid Howells
rxrpc_call_seq_next(struct seq_file * seq,void * v,loff_t * pos)368c3e34a4SDavid Howells static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
378c3e34a4SDavid Howells {
382baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
392baec2c3SDavid Howells
40ad25f5cbSDavid Howells return seq_list_next_rcu(v, &rxnet->calls, pos);
418c3e34a4SDavid Howells }
428c3e34a4SDavid Howells
rxrpc_call_seq_stop(struct seq_file * seq,void * v)438c3e34a4SDavid Howells static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
4488f2a825SDavid Howells __releases(rcu)
458c3e34a4SDavid Howells {
468d94aa38SDavid Howells rcu_read_unlock();
478c3e34a4SDavid Howells }
488c3e34a4SDavid Howells
rxrpc_call_seq_show(struct seq_file * seq,void * v)498c3e34a4SDavid Howells static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
508c3e34a4SDavid Howells {
51df5d8bf7SDavid Howells struct rxrpc_local *local;
528c3e34a4SDavid Howells struct rxrpc_call *call;
532baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
5496b4059fSDavid Howells enum rxrpc_call_state state;
55770b26deSWei Yongjun unsigned long timeout = 0;
56a4ea4c47SDavid Howells rxrpc_seq_t acks_hard_ack;
5775b54cb5SDavid Howells char lbuff[50], rbuff[50];
588c3e34a4SDavid Howells
592baec2c3SDavid Howells if (v == &rxnet->calls) {
608c3e34a4SDavid Howells seq_puts(seq,
6175b54cb5SDavid Howells "Proto Local "
6275b54cb5SDavid Howells " Remote "
638c3e34a4SDavid Howells " SvID ConnID CallID End Use State Abort "
645086d9a9SDavid Howells " DebugId TxSeq TW RxSeq RW RxSerial CW RxTimo\n");
658c3e34a4SDavid Howells return 0;
668c3e34a4SDavid Howells }
678c3e34a4SDavid Howells
688c3e34a4SDavid Howells call = list_entry(v, struct rxrpc_call, link);
698c3e34a4SDavid Howells
70f3441d41SDavid Howells local = call->local;
71df5d8bf7SDavid Howells if (local)
7275b54cb5SDavid Howells sprintf(lbuff, "%pISpc", &local->srx.transport);
73df5d8bf7SDavid Howells else
74df5d8bf7SDavid Howells strcpy(lbuff, "no_local");
758c3e34a4SDavid Howells
76f3441d41SDavid Howells sprintf(rbuff, "%pISpc", &call->dest_srx.transport);
778c3e34a4SDavid Howells
7896b4059fSDavid Howells state = rxrpc_call_state(call);
7996b4059fSDavid Howells if (state != RXRPC_CALL_SERVER_PREALLOC) {
80887763bbSDavid Howells timeout = READ_ONCE(call->expect_rx_by);
81887763bbSDavid Howells timeout -= jiffies;
82887763bbSDavid Howells }
83887763bbSDavid Howells
84a4ea4c47SDavid Howells acks_hard_ack = READ_ONCE(call->acks_hard_ack);
858c3e34a4SDavid Howells seq_printf(seq,
8675b54cb5SDavid Howells "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u"
875086d9a9SDavid Howells " %-8.8s %08x %08x %08x %02x %08x %02x %08x %02x %06lx\n",
888c3e34a4SDavid Howells lbuff,
898c3e34a4SDavid Howells rbuff,
90f3441d41SDavid Howells call->dest_srx.srx_service,
918c3e34a4SDavid Howells call->cid,
928c3e34a4SDavid Howells call->call_id,
93dabe5a79SDavid Howells rxrpc_is_service_call(call) ? "Svc" : "Clt",
94a0575429SDavid Howells refcount_read(&call->ref),
9596b4059fSDavid Howells rxrpc_call_states[state],
96f5c17aaeSDavid Howells call->abort_code,
9732f71aa4SDavid Howells call->debug_id,
98a4ea4c47SDavid Howells acks_hard_ack, READ_ONCE(call->tx_top) - acks_hard_ack,
995bbf9533SDavid Howells call->ackr_window, call->ackr_wtop - call->ackr_window,
1006b97bd7aSDavid Howells call->rx_serial,
1015086d9a9SDavid Howells call->cong_cwnd,
102887763bbSDavid Howells timeout);
1038c3e34a4SDavid Howells
1048c3e34a4SDavid Howells return 0;
1058c3e34a4SDavid Howells }
1068c3e34a4SDavid Howells
107c3506372SChristoph Hellwig const struct seq_operations rxrpc_call_seq_ops = {
1088c3e34a4SDavid Howells .start = rxrpc_call_seq_start,
1098c3e34a4SDavid Howells .next = rxrpc_call_seq_next,
1108c3e34a4SDavid Howells .stop = rxrpc_call_seq_stop,
1118c3e34a4SDavid Howells .show = rxrpc_call_seq_show,
1128c3e34a4SDavid Howells };
1138c3e34a4SDavid Howells
1148c3e34a4SDavid Howells /*
1158c3e34a4SDavid Howells * generate a list of extant virtual connections in /proc/net/rxrpc_conns
1168c3e34a4SDavid Howells */
rxrpc_connection_seq_start(struct seq_file * seq,loff_t * _pos)1178c3e34a4SDavid Howells static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
11888f2a825SDavid Howells __acquires(rxnet->conn_lock)
1198c3e34a4SDavid Howells {
1202baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
1212baec2c3SDavid Howells
1222baec2c3SDavid Howells read_lock(&rxnet->conn_lock);
1232baec2c3SDavid Howells return seq_list_start_head(&rxnet->conn_proc_list, *_pos);
1248c3e34a4SDavid Howells }
1258c3e34a4SDavid Howells
rxrpc_connection_seq_next(struct seq_file * seq,void * v,loff_t * pos)1268c3e34a4SDavid Howells static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
1278c3e34a4SDavid Howells loff_t *pos)
1288c3e34a4SDavid Howells {
1292baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
1302baec2c3SDavid Howells
1312baec2c3SDavid Howells return seq_list_next(v, &rxnet->conn_proc_list, pos);
1328c3e34a4SDavid Howells }
1338c3e34a4SDavid Howells
rxrpc_connection_seq_stop(struct seq_file * seq,void * v)1348c3e34a4SDavid Howells static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
13588f2a825SDavid Howells __releases(rxnet->conn_lock)
1368c3e34a4SDavid Howells {
1372baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
1382baec2c3SDavid Howells
1392baec2c3SDavid Howells read_unlock(&rxnet->conn_lock);
1408c3e34a4SDavid Howells }
1418c3e34a4SDavid Howells
rxrpc_connection_seq_show(struct seq_file * seq,void * v)1428c3e34a4SDavid Howells static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
1438c3e34a4SDavid Howells {
1448c3e34a4SDavid Howells struct rxrpc_connection *conn;
1452baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
146a00ce28bSDavid Howells const char *state;
14775b54cb5SDavid Howells char lbuff[50], rbuff[50];
1488c3e34a4SDavid Howells
1492baec2c3SDavid Howells if (v == &rxnet->conn_proc_list) {
1508c3e34a4SDavid Howells seq_puts(seq,
15175b54cb5SDavid Howells "Proto Local "
15275b54cb5SDavid Howells " Remote "
1533cec055cSDavid Howells " SvID ConnID End Ref Act State Key "
154245500d8SDavid Howells " Serial ISerial CallId0 CallId1 CallId2 CallId3\n"
1558c3e34a4SDavid Howells );
1568c3e34a4SDavid Howells return 0;
1578c3e34a4SDavid Howells }
1588c3e34a4SDavid Howells
1594d028b2cSDavid Howells conn = list_entry(v, struct rxrpc_connection, proc_link);
16000e90712SDavid Howells if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) {
16100e90712SDavid Howells strcpy(lbuff, "no_local");
16200e90712SDavid Howells strcpy(rbuff, "no_connection");
16300e90712SDavid Howells goto print;
16400e90712SDavid Howells }
1658c3e34a4SDavid Howells
1662cc80086SDavid Howells sprintf(lbuff, "%pISpc", &conn->local->srx.transport);
1672cc80086SDavid Howells sprintf(rbuff, "%pISpc", &conn->peer->srx.transport);
16800e90712SDavid Howells print:
169a00ce28bSDavid Howells state = rxrpc_is_conn_aborted(conn) ?
170a00ce28bSDavid Howells rxrpc_call_completions[conn->completion] :
171a00ce28bSDavid Howells rxrpc_conn_states[conn->state];
1728c3e34a4SDavid Howells seq_printf(seq,
1733cec055cSDavid Howells "UDP %-47.47s %-47.47s %4x %08x %s %3u %3d"
1746b97bd7aSDavid Howells " %s %08x %08x %08x %08x %08x %08x %08x\n",
1758c3e34a4SDavid Howells lbuff,
1768c3e34a4SDavid Howells rbuff,
17768d6d1aeSDavid Howells conn->service_id,
17819ffa01cSDavid Howells conn->proto.cid,
17919ffa01cSDavid Howells rxrpc_conn_is_service(conn) ? "Svc" : "Clt",
180a0575429SDavid Howells refcount_read(&conn->ref),
1813cec055cSDavid Howells atomic_read(&conn->active),
182a00ce28bSDavid Howells state,
1832cc80086SDavid Howells key_serial(conn->key),
184*2c9dc472SDavid Howells conn->tx_serial,
1856b97bd7aSDavid Howells conn->hi_serial,
1866b97bd7aSDavid Howells conn->channels[0].call_id,
1876b97bd7aSDavid Howells conn->channels[1].call_id,
1886b97bd7aSDavid Howells conn->channels[2].call_id,
1896b97bd7aSDavid Howells conn->channels[3].call_id);
1908c3e34a4SDavid Howells
1918c3e34a4SDavid Howells return 0;
1928c3e34a4SDavid Howells }
1938c3e34a4SDavid Howells
194c3506372SChristoph Hellwig const struct seq_operations rxrpc_connection_seq_ops = {
1958c3e34a4SDavid Howells .start = rxrpc_connection_seq_start,
1968c3e34a4SDavid Howells .next = rxrpc_connection_seq_next,
1978c3e34a4SDavid Howells .stop = rxrpc_connection_seq_stop,
1988c3e34a4SDavid Howells .show = rxrpc_connection_seq_show,
1998c3e34a4SDavid Howells };
200bc0e7cf4SDavid Howells
201bc0e7cf4SDavid Howells /*
202bc0e7cf4SDavid Howells * generate a list of extant virtual peers in /proc/net/rxrpc/peers
203bc0e7cf4SDavid Howells */
rxrpc_peer_seq_show(struct seq_file * seq,void * v)204bc0e7cf4SDavid Howells static int rxrpc_peer_seq_show(struct seq_file *seq, void *v)
205bc0e7cf4SDavid Howells {
206bc0e7cf4SDavid Howells struct rxrpc_peer *peer;
207bc0e7cf4SDavid Howells time64_t now;
208bc0e7cf4SDavid Howells char lbuff[50], rbuff[50];
209bc0e7cf4SDavid Howells
210bc0e7cf4SDavid Howells if (v == SEQ_START_TOKEN) {
211bc0e7cf4SDavid Howells seq_puts(seq,
212bc0e7cf4SDavid Howells "Proto Local "
213bc0e7cf4SDavid Howells " Remote "
2141fc4fa2aSDavid Howells " Use SST MTU LastUse RTT RTO\n"
215bc0e7cf4SDavid Howells );
216bc0e7cf4SDavid Howells return 0;
217bc0e7cf4SDavid Howells }
218bc0e7cf4SDavid Howells
219bc0e7cf4SDavid Howells peer = list_entry(v, struct rxrpc_peer, hash_link);
220bc0e7cf4SDavid Howells
221bc0e7cf4SDavid Howells sprintf(lbuff, "%pISpc", &peer->local->srx.transport);
222bc0e7cf4SDavid Howells
223bc0e7cf4SDavid Howells sprintf(rbuff, "%pISpc", &peer->srx.transport);
224bc0e7cf4SDavid Howells
225bc0e7cf4SDavid Howells now = ktime_get_seconds();
226bc0e7cf4SDavid Howells seq_printf(seq,
227bc0e7cf4SDavid Howells "UDP %-47.47s %-47.47s %3u"
228c410bf01SDavid Howells " %3u %5u %6llus %8u %8u\n",
229bc0e7cf4SDavid Howells lbuff,
230bc0e7cf4SDavid Howells rbuff,
231a0575429SDavid Howells refcount_read(&peer->ref),
2321fc4fa2aSDavid Howells peer->cong_ssthresh,
233bc0e7cf4SDavid Howells peer->mtu,
234bc0e7cf4SDavid Howells now - peer->last_tx_at,
235c410bf01SDavid Howells peer->srtt_us >> 3,
236c410bf01SDavid Howells jiffies_to_usecs(peer->rto_j));
237bc0e7cf4SDavid Howells
238bc0e7cf4SDavid Howells return 0;
239bc0e7cf4SDavid Howells }
240bc0e7cf4SDavid Howells
rxrpc_peer_seq_start(struct seq_file * seq,loff_t * _pos)241bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_start(struct seq_file *seq, loff_t *_pos)
242bc0e7cf4SDavid Howells __acquires(rcu)
243bc0e7cf4SDavid Howells {
244bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
245bc0e7cf4SDavid Howells unsigned int bucket, n;
246bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash);
247bc0e7cf4SDavid Howells void *p;
248bc0e7cf4SDavid Howells
249bc0e7cf4SDavid Howells rcu_read_lock();
250bc0e7cf4SDavid Howells
251bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX)
252bc0e7cf4SDavid Howells return NULL;
253bc0e7cf4SDavid Howells
254bc0e7cf4SDavid Howells n = *_pos & ((1U << shift) - 1);
255bc0e7cf4SDavid Howells bucket = *_pos >> shift;
256bc0e7cf4SDavid Howells for (;;) {
257bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) {
258bc0e7cf4SDavid Howells *_pos = UINT_MAX;
259bc0e7cf4SDavid Howells return NULL;
260bc0e7cf4SDavid Howells }
261bc0e7cf4SDavid Howells if (n == 0) {
262bc0e7cf4SDavid Howells if (bucket == 0)
263bc0e7cf4SDavid Howells return SEQ_START_TOKEN;
264bc0e7cf4SDavid Howells *_pos += 1;
265bc0e7cf4SDavid Howells n++;
266bc0e7cf4SDavid Howells }
267bc0e7cf4SDavid Howells
268bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1);
269bc0e7cf4SDavid Howells if (p)
270bc0e7cf4SDavid Howells return p;
271bc0e7cf4SDavid Howells bucket++;
272bc0e7cf4SDavid Howells n = 1;
273bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n;
274bc0e7cf4SDavid Howells }
275bc0e7cf4SDavid Howells }
276bc0e7cf4SDavid Howells
rxrpc_peer_seq_next(struct seq_file * seq,void * v,loff_t * _pos)277bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_next(struct seq_file *seq, void *v, loff_t *_pos)
278bc0e7cf4SDavid Howells {
279bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
280bc0e7cf4SDavid Howells unsigned int bucket, n;
281bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash);
282bc0e7cf4SDavid Howells void *p;
283bc0e7cf4SDavid Howells
284bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX)
285bc0e7cf4SDavid Howells return NULL;
286bc0e7cf4SDavid Howells
287bc0e7cf4SDavid Howells bucket = *_pos >> shift;
288bc0e7cf4SDavid Howells
289bc0e7cf4SDavid Howells p = seq_hlist_next_rcu(v, &rxnet->peer_hash[bucket], _pos);
290bc0e7cf4SDavid Howells if (p)
291bc0e7cf4SDavid Howells return p;
292bc0e7cf4SDavid Howells
293bc0e7cf4SDavid Howells for (;;) {
294bc0e7cf4SDavid Howells bucket++;
295bc0e7cf4SDavid Howells n = 1;
296bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n;
297bc0e7cf4SDavid Howells
298bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) {
299bc0e7cf4SDavid Howells *_pos = UINT_MAX;
300bc0e7cf4SDavid Howells return NULL;
301bc0e7cf4SDavid Howells }
302bc0e7cf4SDavid Howells if (n == 0) {
303bc0e7cf4SDavid Howells *_pos += 1;
304bc0e7cf4SDavid Howells n++;
305bc0e7cf4SDavid Howells }
306bc0e7cf4SDavid Howells
307bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1);
308bc0e7cf4SDavid Howells if (p)
309bc0e7cf4SDavid Howells return p;
310bc0e7cf4SDavid Howells }
311bc0e7cf4SDavid Howells }
312bc0e7cf4SDavid Howells
rxrpc_peer_seq_stop(struct seq_file * seq,void * v)313bc0e7cf4SDavid Howells static void rxrpc_peer_seq_stop(struct seq_file *seq, void *v)
314bc0e7cf4SDavid Howells __releases(rcu)
315bc0e7cf4SDavid Howells {
316bc0e7cf4SDavid Howells rcu_read_unlock();
317bc0e7cf4SDavid Howells }
318bc0e7cf4SDavid Howells
319bc0e7cf4SDavid Howells
320bc0e7cf4SDavid Howells const struct seq_operations rxrpc_peer_seq_ops = {
321bc0e7cf4SDavid Howells .start = rxrpc_peer_seq_start,
322bc0e7cf4SDavid Howells .next = rxrpc_peer_seq_next,
323bc0e7cf4SDavid Howells .stop = rxrpc_peer_seq_stop,
324bc0e7cf4SDavid Howells .show = rxrpc_peer_seq_show,
325bc0e7cf4SDavid Howells };
32633912c26SDavid Howells
32733912c26SDavid Howells /*
32833912c26SDavid Howells * Generate a list of extant virtual local endpoints in /proc/net/rxrpc/locals
32933912c26SDavid Howells */
rxrpc_local_seq_show(struct seq_file * seq,void * v)33033912c26SDavid Howells static int rxrpc_local_seq_show(struct seq_file *seq, void *v)
33133912c26SDavid Howells {
33233912c26SDavid Howells struct rxrpc_local *local;
33333912c26SDavid Howells char lbuff[50];
33433912c26SDavid Howells
33533912c26SDavid Howells if (v == SEQ_START_TOKEN) {
33633912c26SDavid Howells seq_puts(seq,
33733912c26SDavid Howells "Proto Local "
338a275da62SDavid Howells " Use Act RxQ\n");
33933912c26SDavid Howells return 0;
34033912c26SDavid Howells }
34133912c26SDavid Howells
34233912c26SDavid Howells local = hlist_entry(v, struct rxrpc_local, link);
34333912c26SDavid Howells
34433912c26SDavid Howells sprintf(lbuff, "%pISpc", &local->srx.transport);
34533912c26SDavid Howells
34633912c26SDavid Howells seq_printf(seq,
347a275da62SDavid Howells "UDP %-47.47s %3u %3u %3u\n",
34833912c26SDavid Howells lbuff,
349a0575429SDavid Howells refcount_read(&local->ref),
350a275da62SDavid Howells atomic_read(&local->active_users),
351a275da62SDavid Howells local->rx_queue.qlen);
35233912c26SDavid Howells
35333912c26SDavid Howells return 0;
35433912c26SDavid Howells }
35533912c26SDavid Howells
rxrpc_local_seq_start(struct seq_file * seq,loff_t * _pos)35633912c26SDavid Howells static void *rxrpc_local_seq_start(struct seq_file *seq, loff_t *_pos)
35733912c26SDavid Howells __acquires(rcu)
35833912c26SDavid Howells {
35933912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
36033912c26SDavid Howells unsigned int n;
36133912c26SDavid Howells
36233912c26SDavid Howells rcu_read_lock();
36333912c26SDavid Howells
36433912c26SDavid Howells if (*_pos >= UINT_MAX)
36533912c26SDavid Howells return NULL;
36633912c26SDavid Howells
36733912c26SDavid Howells n = *_pos;
36833912c26SDavid Howells if (n == 0)
36933912c26SDavid Howells return SEQ_START_TOKEN;
37033912c26SDavid Howells
37133912c26SDavid Howells return seq_hlist_start_rcu(&rxnet->local_endpoints, n - 1);
37233912c26SDavid Howells }
37333912c26SDavid Howells
rxrpc_local_seq_next(struct seq_file * seq,void * v,loff_t * _pos)37433912c26SDavid Howells static void *rxrpc_local_seq_next(struct seq_file *seq, void *v, loff_t *_pos)
37533912c26SDavid Howells {
37633912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq));
37733912c26SDavid Howells
37833912c26SDavid Howells if (*_pos >= UINT_MAX)
37933912c26SDavid Howells return NULL;
38033912c26SDavid Howells
38133912c26SDavid Howells return seq_hlist_next_rcu(v, &rxnet->local_endpoints, _pos);
38233912c26SDavid Howells }
38333912c26SDavid Howells
rxrpc_local_seq_stop(struct seq_file * seq,void * v)38433912c26SDavid Howells static void rxrpc_local_seq_stop(struct seq_file *seq, void *v)
38533912c26SDavid Howells __releases(rcu)
38633912c26SDavid Howells {
38733912c26SDavid Howells rcu_read_unlock();
38833912c26SDavid Howells }
38933912c26SDavid Howells
39033912c26SDavid Howells const struct seq_operations rxrpc_local_seq_ops = {
39133912c26SDavid Howells .start = rxrpc_local_seq_start,
39233912c26SDavid Howells .next = rxrpc_local_seq_next,
39333912c26SDavid Howells .stop = rxrpc_local_seq_stop,
39433912c26SDavid Howells .show = rxrpc_local_seq_show,
39533912c26SDavid Howells };
396b0154246SDavid Howells
397b0154246SDavid Howells /*
398b0154246SDavid Howells * Display stats in /proc/net/rxrpc/stats
399b0154246SDavid Howells */
rxrpc_stats_show(struct seq_file * seq,void * v)400b0154246SDavid Howells int rxrpc_stats_show(struct seq_file *seq, void *v)
401b0154246SDavid Howells {
402b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(seq));
403b0154246SDavid Howells
404b0154246SDavid Howells seq_printf(seq,
40532cf8edbSDavid Howells "Data : send=%u sendf=%u fail=%u\n",
406b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data_send),
40732cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_send_frag),
40832cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_send_fail));
409b0154246SDavid Howells seq_printf(seq,
41032cf8edbSDavid Howells "Data-Tx : nr=%u retrans=%u uf=%u cwr=%u\n",
411b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data),
41232cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_retrans),
41332cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_underflow),
41432cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_cwnd_reset));
415b0154246SDavid Howells seq_printf(seq,
416b0154246SDavid Howells "Data-Rx : nr=%u reqack=%u jumbo=%u\n",
417b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data),
418b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data_reqack),
419b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data_jumbo));
420b0154246SDavid Howells seq_printf(seq,
421f2a676d1SDavid Howells "Ack : fill=%u send=%u skip=%u\n",
422f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_fill),
423f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_send),
424f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_skip));
425f2a676d1SDavid Howells seq_printf(seq,
426f2a676d1SDavid Howells "Ack-Tx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n",
427f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_REQUESTED]),
428f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DUPLICATE]),
429f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]),
430f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_EXCEEDS_WINDOW]),
431f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_NOSPACE]),
432f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING]),
433f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING_RESPONSE]),
434f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DELAY]),
435f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_IDLE]));
436f2a676d1SDavid Howells seq_printf(seq,
437f2a676d1SDavid Howells "Ack-Rx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n",
438f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_REQUESTED]),
439f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DUPLICATE]),
440f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]),
441f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_EXCEEDS_WINDOW]),
442f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_NOSPACE]),
443f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING]),
444f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING_RESPONSE]),
445f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DELAY]),
446f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_IDLE]));
447f2a676d1SDavid Howells seq_printf(seq,
448f7fa5242SDavid Howells "Why-Req-A: acklost=%u already=%u mrtt=%u ortt=%u\n",
449f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_ack_lost]),
450f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_already_on]),
451f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_more_rtt]),
452f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_old_rtt]));
453f7fa5242SDavid Howells seq_printf(seq,
454f7fa5242SDavid Howells "Why-Req-A: nolast=%u retx=%u slows=%u smtxw=%u\n",
455f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_no_srv_last]),
456f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_retrans]),
457f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_slow_start]),
458f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_small_txwin]));
459f7fa5242SDavid Howells seq_printf(seq,
460a4ea4c47SDavid Howells "Buffers : txb=%u rxb=%u\n",
46102a19356SDavid Howells atomic_read(&rxrpc_nr_txbuf),
462b0154246SDavid Howells atomic_read(&rxrpc_n_rx_skbs));
463a275da62SDavid Howells seq_printf(seq,
464a275da62SDavid Howells "IO-thread: loops=%u\n",
465a275da62SDavid Howells atomic_read(&rxnet->stat_io_loop));
466b0154246SDavid Howells return 0;
467b0154246SDavid Howells }
468b0154246SDavid Howells
469b0154246SDavid Howells /*
470b0154246SDavid Howells * Clear stats if /proc/net/rxrpc/stats is written to.
471b0154246SDavid Howells */
rxrpc_stats_clear(struct file * file,char * buf,size_t size)472b0154246SDavid Howells int rxrpc_stats_clear(struct file *file, char *buf, size_t size)
473b0154246SDavid Howells {
474b0154246SDavid Howells struct seq_file *m = file->private_data;
475b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(m));
476b0154246SDavid Howells
477b0154246SDavid Howells if (size > 1 || (size == 1 && buf[0] != '\n'))
478b0154246SDavid Howells return -EINVAL;
479b0154246SDavid Howells
480b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data, 0);
481b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_retrans, 0);
48232cf8edbSDavid Howells atomic_set(&rxnet->stat_tx_data_underflow, 0);
48332cf8edbSDavid Howells atomic_set(&rxnet->stat_tx_data_cwnd_reset, 0);
484b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send, 0);
485b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send_frag, 0);
48632cf8edbSDavid Howells atomic_set(&rxnet->stat_tx_data_send_fail, 0);
487b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data, 0);
488b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_reqack, 0);
489b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_jumbo, 0);
490f2a676d1SDavid Howells
491f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_fill, 0);
492f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_send, 0);
493f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_skip, 0);
494f2a676d1SDavid Howells memset(&rxnet->stat_tx_acks, 0, sizeof(rxnet->stat_tx_acks));
495f2a676d1SDavid Howells memset(&rxnet->stat_rx_acks, 0, sizeof(rxnet->stat_rx_acks));
496f7fa5242SDavid Howells
497f7fa5242SDavid Howells memset(&rxnet->stat_why_req_ack, 0, sizeof(rxnet->stat_why_req_ack));
498a275da62SDavid Howells
499a275da62SDavid Howells atomic_set(&rxnet->stat_io_loop, 0);
500b0154246SDavid Howells return size;
501b0154246SDavid Howells }
502