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 ", 15*9d35d880SDavid 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 */ 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 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 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 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]; 585d7edbc9SDavid Howells u64 wtmp; 598c3e34a4SDavid Howells 602baec2c3SDavid Howells if (v == &rxnet->calls) { 618c3e34a4SDavid Howells seq_puts(seq, 6275b54cb5SDavid Howells "Proto Local " 6375b54cb5SDavid Howells " Remote " 648c3e34a4SDavid Howells " SvID ConnID CallID End Use State Abort " 655086d9a9SDavid Howells " DebugId TxSeq TW RxSeq RW RxSerial CW RxTimo\n"); 668c3e34a4SDavid Howells return 0; 678c3e34a4SDavid Howells } 688c3e34a4SDavid Howells 698c3e34a4SDavid Howells call = list_entry(v, struct rxrpc_call, link); 708c3e34a4SDavid Howells 71f3441d41SDavid Howells local = call->local; 72df5d8bf7SDavid Howells if (local) 7375b54cb5SDavid Howells sprintf(lbuff, "%pISpc", &local->srx.transport); 74df5d8bf7SDavid Howells else 75df5d8bf7SDavid Howells strcpy(lbuff, "no_local"); 768c3e34a4SDavid Howells 77f3441d41SDavid Howells sprintf(rbuff, "%pISpc", &call->dest_srx.transport); 788c3e34a4SDavid Howells 7996b4059fSDavid Howells state = rxrpc_call_state(call); 8096b4059fSDavid Howells if (state != RXRPC_CALL_SERVER_PREALLOC) { 81887763bbSDavid Howells timeout = READ_ONCE(call->expect_rx_by); 82887763bbSDavid Howells timeout -= jiffies; 83887763bbSDavid Howells } 84887763bbSDavid Howells 85a4ea4c47SDavid Howells acks_hard_ack = READ_ONCE(call->acks_hard_ack); 865d7edbc9SDavid Howells wtmp = atomic64_read_acquire(&call->ackr_window); 878c3e34a4SDavid Howells seq_printf(seq, 8875b54cb5SDavid Howells "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u" 895086d9a9SDavid Howells " %-8.8s %08x %08x %08x %02x %08x %02x %08x %02x %06lx\n", 908c3e34a4SDavid Howells lbuff, 918c3e34a4SDavid Howells rbuff, 92f3441d41SDavid Howells call->dest_srx.srx_service, 938c3e34a4SDavid Howells call->cid, 948c3e34a4SDavid Howells call->call_id, 95dabe5a79SDavid Howells rxrpc_is_service_call(call) ? "Svc" : "Clt", 96a0575429SDavid Howells refcount_read(&call->ref), 9796b4059fSDavid Howells rxrpc_call_states[state], 98f5c17aaeSDavid Howells call->abort_code, 9932f71aa4SDavid Howells call->debug_id, 100a4ea4c47SDavid Howells acks_hard_ack, READ_ONCE(call->tx_top) - acks_hard_ack, 1015d7edbc9SDavid Howells lower_32_bits(wtmp), upper_32_bits(wtmp) - lower_32_bits(wtmp), 1026b97bd7aSDavid Howells call->rx_serial, 1035086d9a9SDavid Howells call->cong_cwnd, 104887763bbSDavid Howells timeout); 1058c3e34a4SDavid Howells 1068c3e34a4SDavid Howells return 0; 1078c3e34a4SDavid Howells } 1088c3e34a4SDavid Howells 109c3506372SChristoph Hellwig const struct seq_operations rxrpc_call_seq_ops = { 1108c3e34a4SDavid Howells .start = rxrpc_call_seq_start, 1118c3e34a4SDavid Howells .next = rxrpc_call_seq_next, 1128c3e34a4SDavid Howells .stop = rxrpc_call_seq_stop, 1138c3e34a4SDavid Howells .show = rxrpc_call_seq_show, 1148c3e34a4SDavid Howells }; 1158c3e34a4SDavid Howells 1168c3e34a4SDavid Howells /* 1178c3e34a4SDavid Howells * generate a list of extant virtual connections in /proc/net/rxrpc_conns 1188c3e34a4SDavid Howells */ 1198c3e34a4SDavid Howells static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) 12088f2a825SDavid Howells __acquires(rxnet->conn_lock) 1218c3e34a4SDavid Howells { 1222baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1232baec2c3SDavid Howells 1242baec2c3SDavid Howells read_lock(&rxnet->conn_lock); 1252baec2c3SDavid Howells return seq_list_start_head(&rxnet->conn_proc_list, *_pos); 1268c3e34a4SDavid Howells } 1278c3e34a4SDavid Howells 1288c3e34a4SDavid Howells static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, 1298c3e34a4SDavid Howells loff_t *pos) 1308c3e34a4SDavid Howells { 1312baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1322baec2c3SDavid Howells 1332baec2c3SDavid Howells return seq_list_next(v, &rxnet->conn_proc_list, pos); 1348c3e34a4SDavid Howells } 1358c3e34a4SDavid Howells 1368c3e34a4SDavid Howells static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) 13788f2a825SDavid Howells __releases(rxnet->conn_lock) 1388c3e34a4SDavid Howells { 1392baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1402baec2c3SDavid Howells 1412baec2c3SDavid Howells read_unlock(&rxnet->conn_lock); 1428c3e34a4SDavid Howells } 1438c3e34a4SDavid Howells 1448c3e34a4SDavid Howells static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) 1458c3e34a4SDavid Howells { 1468c3e34a4SDavid Howells struct rxrpc_connection *conn; 1472baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 148a00ce28bSDavid Howells const char *state; 14975b54cb5SDavid Howells char lbuff[50], rbuff[50]; 1508c3e34a4SDavid Howells 1512baec2c3SDavid Howells if (v == &rxnet->conn_proc_list) { 1528c3e34a4SDavid Howells seq_puts(seq, 15375b54cb5SDavid Howells "Proto Local " 15475b54cb5SDavid Howells " Remote " 1553cec055cSDavid Howells " SvID ConnID End Ref Act State Key " 156245500d8SDavid Howells " Serial ISerial CallId0 CallId1 CallId2 CallId3\n" 1578c3e34a4SDavid Howells ); 1588c3e34a4SDavid Howells return 0; 1598c3e34a4SDavid Howells } 1608c3e34a4SDavid Howells 1614d028b2cSDavid Howells conn = list_entry(v, struct rxrpc_connection, proc_link); 16200e90712SDavid Howells if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { 16300e90712SDavid Howells strcpy(lbuff, "no_local"); 16400e90712SDavid Howells strcpy(rbuff, "no_connection"); 16500e90712SDavid Howells goto print; 16600e90712SDavid Howells } 1678c3e34a4SDavid Howells 1682cc80086SDavid Howells sprintf(lbuff, "%pISpc", &conn->local->srx.transport); 1692cc80086SDavid Howells sprintf(rbuff, "%pISpc", &conn->peer->srx.transport); 17000e90712SDavid Howells print: 171a00ce28bSDavid Howells state = rxrpc_is_conn_aborted(conn) ? 172a00ce28bSDavid Howells rxrpc_call_completions[conn->completion] : 173a00ce28bSDavid Howells rxrpc_conn_states[conn->state]; 1748c3e34a4SDavid Howells seq_printf(seq, 1753cec055cSDavid Howells "UDP %-47.47s %-47.47s %4x %08x %s %3u %3d" 1766b97bd7aSDavid Howells " %s %08x %08x %08x %08x %08x %08x %08x\n", 1778c3e34a4SDavid Howells lbuff, 1788c3e34a4SDavid Howells rbuff, 17968d6d1aeSDavid Howells conn->service_id, 18019ffa01cSDavid Howells conn->proto.cid, 18119ffa01cSDavid Howells rxrpc_conn_is_service(conn) ? "Svc" : "Clt", 182a0575429SDavid Howells refcount_read(&conn->ref), 1833cec055cSDavid Howells atomic_read(&conn->active), 184a00ce28bSDavid Howells state, 1852cc80086SDavid Howells key_serial(conn->key), 1868c3e34a4SDavid Howells atomic_read(&conn->serial), 1876b97bd7aSDavid Howells conn->hi_serial, 1886b97bd7aSDavid Howells conn->channels[0].call_id, 1896b97bd7aSDavid Howells conn->channels[1].call_id, 1906b97bd7aSDavid Howells conn->channels[2].call_id, 1916b97bd7aSDavid Howells conn->channels[3].call_id); 1928c3e34a4SDavid Howells 1938c3e34a4SDavid Howells return 0; 1948c3e34a4SDavid Howells } 1958c3e34a4SDavid Howells 196c3506372SChristoph Hellwig const struct seq_operations rxrpc_connection_seq_ops = { 1978c3e34a4SDavid Howells .start = rxrpc_connection_seq_start, 1988c3e34a4SDavid Howells .next = rxrpc_connection_seq_next, 1998c3e34a4SDavid Howells .stop = rxrpc_connection_seq_stop, 2008c3e34a4SDavid Howells .show = rxrpc_connection_seq_show, 2018c3e34a4SDavid Howells }; 202bc0e7cf4SDavid Howells 203bc0e7cf4SDavid Howells /* 204bc0e7cf4SDavid Howells * generate a list of extant virtual peers in /proc/net/rxrpc/peers 205bc0e7cf4SDavid Howells */ 206bc0e7cf4SDavid Howells static int rxrpc_peer_seq_show(struct seq_file *seq, void *v) 207bc0e7cf4SDavid Howells { 208bc0e7cf4SDavid Howells struct rxrpc_peer *peer; 209bc0e7cf4SDavid Howells time64_t now; 210bc0e7cf4SDavid Howells char lbuff[50], rbuff[50]; 211bc0e7cf4SDavid Howells 212bc0e7cf4SDavid Howells if (v == SEQ_START_TOKEN) { 213bc0e7cf4SDavid Howells seq_puts(seq, 214bc0e7cf4SDavid Howells "Proto Local " 215bc0e7cf4SDavid Howells " Remote " 2161fc4fa2aSDavid Howells " Use SST MTU LastUse RTT RTO\n" 217bc0e7cf4SDavid Howells ); 218bc0e7cf4SDavid Howells return 0; 219bc0e7cf4SDavid Howells } 220bc0e7cf4SDavid Howells 221bc0e7cf4SDavid Howells peer = list_entry(v, struct rxrpc_peer, hash_link); 222bc0e7cf4SDavid Howells 223bc0e7cf4SDavid Howells sprintf(lbuff, "%pISpc", &peer->local->srx.transport); 224bc0e7cf4SDavid Howells 225bc0e7cf4SDavid Howells sprintf(rbuff, "%pISpc", &peer->srx.transport); 226bc0e7cf4SDavid Howells 227bc0e7cf4SDavid Howells now = ktime_get_seconds(); 228bc0e7cf4SDavid Howells seq_printf(seq, 229bc0e7cf4SDavid Howells "UDP %-47.47s %-47.47s %3u" 230c410bf01SDavid Howells " %3u %5u %6llus %8u %8u\n", 231bc0e7cf4SDavid Howells lbuff, 232bc0e7cf4SDavid Howells rbuff, 233a0575429SDavid Howells refcount_read(&peer->ref), 2341fc4fa2aSDavid Howells peer->cong_ssthresh, 235bc0e7cf4SDavid Howells peer->mtu, 236bc0e7cf4SDavid Howells now - peer->last_tx_at, 237c410bf01SDavid Howells peer->srtt_us >> 3, 238c410bf01SDavid Howells jiffies_to_usecs(peer->rto_j)); 239bc0e7cf4SDavid Howells 240bc0e7cf4SDavid Howells return 0; 241bc0e7cf4SDavid Howells } 242bc0e7cf4SDavid Howells 243bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_start(struct seq_file *seq, loff_t *_pos) 244bc0e7cf4SDavid Howells __acquires(rcu) 245bc0e7cf4SDavid Howells { 246bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 247bc0e7cf4SDavid Howells unsigned int bucket, n; 248bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 249bc0e7cf4SDavid Howells void *p; 250bc0e7cf4SDavid Howells 251bc0e7cf4SDavid Howells rcu_read_lock(); 252bc0e7cf4SDavid Howells 253bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 254bc0e7cf4SDavid Howells return NULL; 255bc0e7cf4SDavid Howells 256bc0e7cf4SDavid Howells n = *_pos & ((1U << shift) - 1); 257bc0e7cf4SDavid Howells bucket = *_pos >> shift; 258bc0e7cf4SDavid Howells for (;;) { 259bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 260bc0e7cf4SDavid Howells *_pos = UINT_MAX; 261bc0e7cf4SDavid Howells return NULL; 262bc0e7cf4SDavid Howells } 263bc0e7cf4SDavid Howells if (n == 0) { 264bc0e7cf4SDavid Howells if (bucket == 0) 265bc0e7cf4SDavid Howells return SEQ_START_TOKEN; 266bc0e7cf4SDavid Howells *_pos += 1; 267bc0e7cf4SDavid Howells n++; 268bc0e7cf4SDavid Howells } 269bc0e7cf4SDavid Howells 270bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 271bc0e7cf4SDavid Howells if (p) 272bc0e7cf4SDavid Howells return p; 273bc0e7cf4SDavid Howells bucket++; 274bc0e7cf4SDavid Howells n = 1; 275bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 276bc0e7cf4SDavid Howells } 277bc0e7cf4SDavid Howells } 278bc0e7cf4SDavid Howells 279bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_next(struct seq_file *seq, void *v, loff_t *_pos) 280bc0e7cf4SDavid Howells { 281bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 282bc0e7cf4SDavid Howells unsigned int bucket, n; 283bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 284bc0e7cf4SDavid Howells void *p; 285bc0e7cf4SDavid Howells 286bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 287bc0e7cf4SDavid Howells return NULL; 288bc0e7cf4SDavid Howells 289bc0e7cf4SDavid Howells bucket = *_pos >> shift; 290bc0e7cf4SDavid Howells 291bc0e7cf4SDavid Howells p = seq_hlist_next_rcu(v, &rxnet->peer_hash[bucket], _pos); 292bc0e7cf4SDavid Howells if (p) 293bc0e7cf4SDavid Howells return p; 294bc0e7cf4SDavid Howells 295bc0e7cf4SDavid Howells for (;;) { 296bc0e7cf4SDavid Howells bucket++; 297bc0e7cf4SDavid Howells n = 1; 298bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 299bc0e7cf4SDavid Howells 300bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 301bc0e7cf4SDavid Howells *_pos = UINT_MAX; 302bc0e7cf4SDavid Howells return NULL; 303bc0e7cf4SDavid Howells } 304bc0e7cf4SDavid Howells if (n == 0) { 305bc0e7cf4SDavid Howells *_pos += 1; 306bc0e7cf4SDavid Howells n++; 307bc0e7cf4SDavid Howells } 308bc0e7cf4SDavid Howells 309bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 310bc0e7cf4SDavid Howells if (p) 311bc0e7cf4SDavid Howells return p; 312bc0e7cf4SDavid Howells } 313bc0e7cf4SDavid Howells } 314bc0e7cf4SDavid Howells 315bc0e7cf4SDavid Howells static void rxrpc_peer_seq_stop(struct seq_file *seq, void *v) 316bc0e7cf4SDavid Howells __releases(rcu) 317bc0e7cf4SDavid Howells { 318bc0e7cf4SDavid Howells rcu_read_unlock(); 319bc0e7cf4SDavid Howells } 320bc0e7cf4SDavid Howells 321bc0e7cf4SDavid Howells 322bc0e7cf4SDavid Howells const struct seq_operations rxrpc_peer_seq_ops = { 323bc0e7cf4SDavid Howells .start = rxrpc_peer_seq_start, 324bc0e7cf4SDavid Howells .next = rxrpc_peer_seq_next, 325bc0e7cf4SDavid Howells .stop = rxrpc_peer_seq_stop, 326bc0e7cf4SDavid Howells .show = rxrpc_peer_seq_show, 327bc0e7cf4SDavid Howells }; 32833912c26SDavid Howells 32933912c26SDavid Howells /* 33033912c26SDavid Howells * Generate a list of extant virtual local endpoints in /proc/net/rxrpc/locals 33133912c26SDavid Howells */ 33233912c26SDavid Howells static int rxrpc_local_seq_show(struct seq_file *seq, void *v) 33333912c26SDavid Howells { 33433912c26SDavid Howells struct rxrpc_local *local; 33533912c26SDavid Howells char lbuff[50]; 33633912c26SDavid Howells 33733912c26SDavid Howells if (v == SEQ_START_TOKEN) { 33833912c26SDavid Howells seq_puts(seq, 33933912c26SDavid Howells "Proto Local " 340a275da62SDavid Howells " Use Act RxQ\n"); 34133912c26SDavid Howells return 0; 34233912c26SDavid Howells } 34333912c26SDavid Howells 34433912c26SDavid Howells local = hlist_entry(v, struct rxrpc_local, link); 34533912c26SDavid Howells 34633912c26SDavid Howells sprintf(lbuff, "%pISpc", &local->srx.transport); 34733912c26SDavid Howells 34833912c26SDavid Howells seq_printf(seq, 349a275da62SDavid Howells "UDP %-47.47s %3u %3u %3u\n", 35033912c26SDavid Howells lbuff, 351a0575429SDavid Howells refcount_read(&local->ref), 352a275da62SDavid Howells atomic_read(&local->active_users), 353a275da62SDavid Howells local->rx_queue.qlen); 35433912c26SDavid Howells 35533912c26SDavid Howells return 0; 35633912c26SDavid Howells } 35733912c26SDavid Howells 35833912c26SDavid Howells static void *rxrpc_local_seq_start(struct seq_file *seq, loff_t *_pos) 35933912c26SDavid Howells __acquires(rcu) 36033912c26SDavid Howells { 36133912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 36233912c26SDavid Howells unsigned int n; 36333912c26SDavid Howells 36433912c26SDavid Howells rcu_read_lock(); 36533912c26SDavid Howells 36633912c26SDavid Howells if (*_pos >= UINT_MAX) 36733912c26SDavid Howells return NULL; 36833912c26SDavid Howells 36933912c26SDavid Howells n = *_pos; 37033912c26SDavid Howells if (n == 0) 37133912c26SDavid Howells return SEQ_START_TOKEN; 37233912c26SDavid Howells 37333912c26SDavid Howells return seq_hlist_start_rcu(&rxnet->local_endpoints, n - 1); 37433912c26SDavid Howells } 37533912c26SDavid Howells 37633912c26SDavid Howells static void *rxrpc_local_seq_next(struct seq_file *seq, void *v, loff_t *_pos) 37733912c26SDavid Howells { 37833912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 37933912c26SDavid Howells 38033912c26SDavid Howells if (*_pos >= UINT_MAX) 38133912c26SDavid Howells return NULL; 38233912c26SDavid Howells 38333912c26SDavid Howells return seq_hlist_next_rcu(v, &rxnet->local_endpoints, _pos); 38433912c26SDavid Howells } 38533912c26SDavid Howells 38633912c26SDavid Howells static void rxrpc_local_seq_stop(struct seq_file *seq, void *v) 38733912c26SDavid Howells __releases(rcu) 38833912c26SDavid Howells { 38933912c26SDavid Howells rcu_read_unlock(); 39033912c26SDavid Howells } 39133912c26SDavid Howells 39233912c26SDavid Howells const struct seq_operations rxrpc_local_seq_ops = { 39333912c26SDavid Howells .start = rxrpc_local_seq_start, 39433912c26SDavid Howells .next = rxrpc_local_seq_next, 39533912c26SDavid Howells .stop = rxrpc_local_seq_stop, 39633912c26SDavid Howells .show = rxrpc_local_seq_show, 39733912c26SDavid Howells }; 398b0154246SDavid Howells 399b0154246SDavid Howells /* 400b0154246SDavid Howells * Display stats in /proc/net/rxrpc/stats 401b0154246SDavid Howells */ 402b0154246SDavid Howells int rxrpc_stats_show(struct seq_file *seq, void *v) 403b0154246SDavid Howells { 404b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(seq)); 405b0154246SDavid Howells 406b0154246SDavid Howells seq_printf(seq, 40732cf8edbSDavid Howells "Data : send=%u sendf=%u fail=%u\n", 408b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data_send), 40932cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_send_frag), 41032cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_send_fail)); 411b0154246SDavid Howells seq_printf(seq, 41232cf8edbSDavid Howells "Data-Tx : nr=%u retrans=%u uf=%u cwr=%u\n", 413b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data), 41432cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_retrans), 41532cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_underflow), 41632cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_cwnd_reset)); 417b0154246SDavid Howells seq_printf(seq, 418b0154246SDavid Howells "Data-Rx : nr=%u reqack=%u jumbo=%u\n", 419b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data), 420b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data_reqack), 421b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data_jumbo)); 422b0154246SDavid Howells seq_printf(seq, 423f2a676d1SDavid Howells "Ack : fill=%u send=%u skip=%u\n", 424f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_fill), 425f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_send), 426f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_skip)); 427f2a676d1SDavid Howells seq_printf(seq, 428f2a676d1SDavid Howells "Ack-Tx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n", 429f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_REQUESTED]), 430f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DUPLICATE]), 431f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]), 432f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_EXCEEDS_WINDOW]), 433f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_NOSPACE]), 434f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING]), 435f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING_RESPONSE]), 436f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DELAY]), 437f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_IDLE])); 438f2a676d1SDavid Howells seq_printf(seq, 439f2a676d1SDavid Howells "Ack-Rx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n", 440f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_REQUESTED]), 441f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DUPLICATE]), 442f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]), 443f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_EXCEEDS_WINDOW]), 444f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_NOSPACE]), 445f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING]), 446f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING_RESPONSE]), 447f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DELAY]), 448f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_IDLE])); 449f2a676d1SDavid Howells seq_printf(seq, 450f7fa5242SDavid Howells "Why-Req-A: acklost=%u already=%u mrtt=%u ortt=%u\n", 451f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_ack_lost]), 452f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_already_on]), 453f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_more_rtt]), 454f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_old_rtt])); 455f7fa5242SDavid Howells seq_printf(seq, 456f7fa5242SDavid Howells "Why-Req-A: nolast=%u retx=%u slows=%u smtxw=%u\n", 457f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_no_srv_last]), 458f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_retrans]), 459f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_slow_start]), 460f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_small_txwin])); 461f7fa5242SDavid Howells seq_printf(seq, 462a4ea4c47SDavid Howells "Buffers : txb=%u rxb=%u\n", 46302a19356SDavid Howells atomic_read(&rxrpc_nr_txbuf), 464b0154246SDavid Howells atomic_read(&rxrpc_n_rx_skbs)); 465a275da62SDavid Howells seq_printf(seq, 466a275da62SDavid Howells "IO-thread: loops=%u\n", 467a275da62SDavid Howells atomic_read(&rxnet->stat_io_loop)); 468b0154246SDavid Howells return 0; 469b0154246SDavid Howells } 470b0154246SDavid Howells 471b0154246SDavid Howells /* 472b0154246SDavid Howells * Clear stats if /proc/net/rxrpc/stats is written to. 473b0154246SDavid Howells */ 474b0154246SDavid Howells int rxrpc_stats_clear(struct file *file, char *buf, size_t size) 475b0154246SDavid Howells { 476b0154246SDavid Howells struct seq_file *m = file->private_data; 477b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(m)); 478b0154246SDavid Howells 479b0154246SDavid Howells if (size > 1 || (size == 1 && buf[0] != '\n')) 480b0154246SDavid Howells return -EINVAL; 481b0154246SDavid Howells 482b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data, 0); 483b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_retrans, 0); 48432cf8edbSDavid Howells atomic_set(&rxnet->stat_tx_data_underflow, 0); 48532cf8edbSDavid Howells atomic_set(&rxnet->stat_tx_data_cwnd_reset, 0); 486b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send, 0); 487b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send_frag, 0); 48832cf8edbSDavid Howells atomic_set(&rxnet->stat_tx_data_send_fail, 0); 489b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data, 0); 490b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_reqack, 0); 491b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_jumbo, 0); 492f2a676d1SDavid Howells 493f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_fill, 0); 494f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_send, 0); 495f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_skip, 0); 496f2a676d1SDavid Howells memset(&rxnet->stat_tx_acks, 0, sizeof(rxnet->stat_tx_acks)); 497f2a676d1SDavid Howells memset(&rxnet->stat_rx_acks, 0, sizeof(rxnet->stat_rx_acks)); 498f7fa5242SDavid Howells 499f7fa5242SDavid Howells memset(&rxnet->stat_why_req_ack, 0, sizeof(rxnet->stat_why_req_ack)); 500a275da62SDavid Howells 501a275da62SDavid Howells atomic_set(&rxnet->stat_io_loop, 0); 502b0154246SDavid Howells return size; 503b0154246SDavid Howells } 504