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 ", 158c3e34a4SDavid Howells [RXRPC_CONN_CLIENT] = "Client ", 1600e90712SDavid Howells [RXRPC_CONN_SERVICE_PREALLOC] = "SvPrealc", 17bba304dbSDavid Howells [RXRPC_CONN_SERVICE_UNSECURED] = "SvUnsec ", 18bba304dbSDavid Howells [RXRPC_CONN_SERVICE_CHALLENGING] = "SvChall ", 19bba304dbSDavid Howells [RXRPC_CONN_SERVICE] = "SvSecure", 208c3e34a4SDavid Howells [RXRPC_CONN_REMOTELY_ABORTED] = "RmtAbort", 218c3e34a4SDavid Howells [RXRPC_CONN_LOCALLY_ABORTED] = "LocAbort", 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; 52df5d8bf7SDavid Howells struct rxrpc_sock *rx; 53df5d8bf7SDavid Howells struct rxrpc_peer *peer; 548c3e34a4SDavid Howells struct rxrpc_call *call; 552baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 56770b26deSWei Yongjun unsigned long timeout = 0; 573e018dafSDavid Howells rxrpc_seq_t tx_hard_ack, rx_hard_ack; 5875b54cb5SDavid Howells char lbuff[50], rbuff[50]; 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 " 6532f71aa4SDavid Howells " DebugId TxSeq TW RxSeq RW RxSerial RxTimo\n"); 668c3e34a4SDavid Howells return 0; 678c3e34a4SDavid Howells } 688c3e34a4SDavid Howells 698c3e34a4SDavid Howells call = list_entry(v, struct rxrpc_call, link); 708c3e34a4SDavid Howells 718d94aa38SDavid Howells rx = rcu_dereference(call->socket); 72df5d8bf7SDavid Howells if (rx) { 73df5d8bf7SDavid Howells local = READ_ONCE(rx->local); 74df5d8bf7SDavid Howells if (local) 7575b54cb5SDavid Howells sprintf(lbuff, "%pISpc", &local->srx.transport); 76df5d8bf7SDavid Howells else 77df5d8bf7SDavid Howells strcpy(lbuff, "no_local"); 78df5d8bf7SDavid Howells } else { 79df5d8bf7SDavid Howells strcpy(lbuff, "no_socket"); 80df5d8bf7SDavid Howells } 818c3e34a4SDavid Howells 82df5d8bf7SDavid Howells peer = call->peer; 83df5d8bf7SDavid Howells if (peer) 8475b54cb5SDavid Howells sprintf(rbuff, "%pISpc", &peer->srx.transport); 85f4e7da8cSDavid Howells else 86f4e7da8cSDavid Howells strcpy(rbuff, "no_connection"); 878c3e34a4SDavid Howells 88887763bbSDavid Howells if (call->state != RXRPC_CALL_SERVER_PREALLOC) { 89887763bbSDavid Howells timeout = READ_ONCE(call->expect_rx_by); 90887763bbSDavid Howells timeout -= jiffies; 91887763bbSDavid Howells } 92887763bbSDavid Howells 933e018dafSDavid Howells tx_hard_ack = READ_ONCE(call->tx_hard_ack); 943e018dafSDavid Howells rx_hard_ack = READ_ONCE(call->rx_hard_ack); 958c3e34a4SDavid Howells seq_printf(seq, 9675b54cb5SDavid Howells "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u" 9732f71aa4SDavid Howells " %-8.8s %08x %08x %08x %02x %08x %02x %08x %06lx\n", 988c3e34a4SDavid Howells lbuff, 998c3e34a4SDavid Howells rbuff, 100f4e7da8cSDavid Howells call->service_id, 1018c3e34a4SDavid Howells call->cid, 1028c3e34a4SDavid Howells call->call_id, 103dabe5a79SDavid Howells rxrpc_is_service_call(call) ? "Svc" : "Clt", 104a0575429SDavid Howells refcount_read(&call->ref), 1058c3e34a4SDavid Howells rxrpc_call_states[call->state], 106f5c17aaeSDavid Howells call->abort_code, 10732f71aa4SDavid Howells call->debug_id, 1083e018dafSDavid Howells tx_hard_ack, READ_ONCE(call->tx_top) - tx_hard_ack, 109887763bbSDavid Howells rx_hard_ack, READ_ONCE(call->rx_top) - rx_hard_ack, 1106b97bd7aSDavid Howells call->rx_serial, 111887763bbSDavid Howells timeout); 1128c3e34a4SDavid Howells 1138c3e34a4SDavid Howells return 0; 1148c3e34a4SDavid Howells } 1158c3e34a4SDavid Howells 116c3506372SChristoph Hellwig const struct seq_operations rxrpc_call_seq_ops = { 1178c3e34a4SDavid Howells .start = rxrpc_call_seq_start, 1188c3e34a4SDavid Howells .next = rxrpc_call_seq_next, 1198c3e34a4SDavid Howells .stop = rxrpc_call_seq_stop, 1208c3e34a4SDavid Howells .show = rxrpc_call_seq_show, 1218c3e34a4SDavid Howells }; 1228c3e34a4SDavid Howells 1238c3e34a4SDavid Howells /* 1248c3e34a4SDavid Howells * generate a list of extant virtual connections in /proc/net/rxrpc_conns 1258c3e34a4SDavid Howells */ 1268c3e34a4SDavid Howells static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) 12788f2a825SDavid Howells __acquires(rxnet->conn_lock) 1288c3e34a4SDavid Howells { 1292baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1302baec2c3SDavid Howells 1312baec2c3SDavid Howells read_lock(&rxnet->conn_lock); 1322baec2c3SDavid Howells return seq_list_start_head(&rxnet->conn_proc_list, *_pos); 1338c3e34a4SDavid Howells } 1348c3e34a4SDavid Howells 1358c3e34a4SDavid Howells static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, 1368c3e34a4SDavid Howells loff_t *pos) 1378c3e34a4SDavid Howells { 1382baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1392baec2c3SDavid Howells 1402baec2c3SDavid Howells return seq_list_next(v, &rxnet->conn_proc_list, pos); 1418c3e34a4SDavid Howells } 1428c3e34a4SDavid Howells 1438c3e34a4SDavid Howells static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) 14488f2a825SDavid Howells __releases(rxnet->conn_lock) 1458c3e34a4SDavid Howells { 1462baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1472baec2c3SDavid Howells 1482baec2c3SDavid Howells read_unlock(&rxnet->conn_lock); 1498c3e34a4SDavid Howells } 1508c3e34a4SDavid Howells 1518c3e34a4SDavid Howells static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) 1528c3e34a4SDavid Howells { 1538c3e34a4SDavid Howells struct rxrpc_connection *conn; 1542baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 15575b54cb5SDavid Howells char lbuff[50], rbuff[50]; 1568c3e34a4SDavid Howells 1572baec2c3SDavid Howells if (v == &rxnet->conn_proc_list) { 1588c3e34a4SDavid Howells seq_puts(seq, 15975b54cb5SDavid Howells "Proto Local " 16075b54cb5SDavid Howells " Remote " 161a1399f8bSDavid Howells " SvID ConnID End Use State Key " 162245500d8SDavid Howells " Serial ISerial CallId0 CallId1 CallId2 CallId3\n" 1638c3e34a4SDavid Howells ); 1648c3e34a4SDavid Howells return 0; 1658c3e34a4SDavid Howells } 1668c3e34a4SDavid Howells 1674d028b2cSDavid Howells conn = list_entry(v, struct rxrpc_connection, proc_link); 16800e90712SDavid Howells if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { 16900e90712SDavid Howells strcpy(lbuff, "no_local"); 17000e90712SDavid Howells strcpy(rbuff, "no_connection"); 17100e90712SDavid Howells goto print; 17200e90712SDavid Howells } 1738c3e34a4SDavid Howells 17475b54cb5SDavid Howells sprintf(lbuff, "%pISpc", &conn->params.local->srx.transport); 1758c3e34a4SDavid Howells 17675b54cb5SDavid Howells sprintf(rbuff, "%pISpc", &conn->params.peer->srx.transport); 17700e90712SDavid Howells print: 1788c3e34a4SDavid Howells seq_printf(seq, 17975b54cb5SDavid Howells "UDP %-47.47s %-47.47s %4x %08x %s %3u" 1806b97bd7aSDavid Howells " %s %08x %08x %08x %08x %08x %08x %08x\n", 1818c3e34a4SDavid Howells lbuff, 1828c3e34a4SDavid Howells rbuff, 18368d6d1aeSDavid Howells conn->service_id, 18419ffa01cSDavid Howells conn->proto.cid, 18519ffa01cSDavid Howells rxrpc_conn_is_service(conn) ? "Svc" : "Clt", 186a0575429SDavid Howells refcount_read(&conn->ref), 1878c3e34a4SDavid Howells rxrpc_conn_states[conn->state], 18819ffa01cSDavid Howells key_serial(conn->params.key), 1898c3e34a4SDavid Howells atomic_read(&conn->serial), 1906b97bd7aSDavid Howells conn->hi_serial, 1916b97bd7aSDavid Howells conn->channels[0].call_id, 1926b97bd7aSDavid Howells conn->channels[1].call_id, 1936b97bd7aSDavid Howells conn->channels[2].call_id, 1946b97bd7aSDavid Howells conn->channels[3].call_id); 1958c3e34a4SDavid Howells 1968c3e34a4SDavid Howells return 0; 1978c3e34a4SDavid Howells } 1988c3e34a4SDavid Howells 199c3506372SChristoph Hellwig const struct seq_operations rxrpc_connection_seq_ops = { 2008c3e34a4SDavid Howells .start = rxrpc_connection_seq_start, 2018c3e34a4SDavid Howells .next = rxrpc_connection_seq_next, 2028c3e34a4SDavid Howells .stop = rxrpc_connection_seq_stop, 2038c3e34a4SDavid Howells .show = rxrpc_connection_seq_show, 2048c3e34a4SDavid Howells }; 205bc0e7cf4SDavid Howells 206bc0e7cf4SDavid Howells /* 207bc0e7cf4SDavid Howells * generate a list of extant virtual peers in /proc/net/rxrpc/peers 208bc0e7cf4SDavid Howells */ 209bc0e7cf4SDavid Howells static int rxrpc_peer_seq_show(struct seq_file *seq, void *v) 210bc0e7cf4SDavid Howells { 211bc0e7cf4SDavid Howells struct rxrpc_peer *peer; 212bc0e7cf4SDavid Howells time64_t now; 213bc0e7cf4SDavid Howells char lbuff[50], rbuff[50]; 214bc0e7cf4SDavid Howells 215bc0e7cf4SDavid Howells if (v == SEQ_START_TOKEN) { 216bc0e7cf4SDavid Howells seq_puts(seq, 217bc0e7cf4SDavid Howells "Proto Local " 218bc0e7cf4SDavid Howells " Remote " 219c410bf01SDavid Howells " Use CW MTU LastUse RTT RTO\n" 220bc0e7cf4SDavid Howells ); 221bc0e7cf4SDavid Howells return 0; 222bc0e7cf4SDavid Howells } 223bc0e7cf4SDavid Howells 224bc0e7cf4SDavid Howells peer = list_entry(v, struct rxrpc_peer, hash_link); 225bc0e7cf4SDavid Howells 226bc0e7cf4SDavid Howells sprintf(lbuff, "%pISpc", &peer->local->srx.transport); 227bc0e7cf4SDavid Howells 228bc0e7cf4SDavid Howells sprintf(rbuff, "%pISpc", &peer->srx.transport); 229bc0e7cf4SDavid Howells 230bc0e7cf4SDavid Howells now = ktime_get_seconds(); 231bc0e7cf4SDavid Howells seq_printf(seq, 232bc0e7cf4SDavid Howells "UDP %-47.47s %-47.47s %3u" 233c410bf01SDavid Howells " %3u %5u %6llus %8u %8u\n", 234bc0e7cf4SDavid Howells lbuff, 235bc0e7cf4SDavid Howells rbuff, 236a0575429SDavid Howells refcount_read(&peer->ref), 237bc0e7cf4SDavid Howells peer->cong_cwnd, 238bc0e7cf4SDavid Howells peer->mtu, 239bc0e7cf4SDavid Howells now - peer->last_tx_at, 240c410bf01SDavid Howells peer->srtt_us >> 3, 241c410bf01SDavid Howells jiffies_to_usecs(peer->rto_j)); 242bc0e7cf4SDavid Howells 243bc0e7cf4SDavid Howells return 0; 244bc0e7cf4SDavid Howells } 245bc0e7cf4SDavid Howells 246bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_start(struct seq_file *seq, loff_t *_pos) 247bc0e7cf4SDavid Howells __acquires(rcu) 248bc0e7cf4SDavid Howells { 249bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 250bc0e7cf4SDavid Howells unsigned int bucket, n; 251bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 252bc0e7cf4SDavid Howells void *p; 253bc0e7cf4SDavid Howells 254bc0e7cf4SDavid Howells rcu_read_lock(); 255bc0e7cf4SDavid Howells 256bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 257bc0e7cf4SDavid Howells return NULL; 258bc0e7cf4SDavid Howells 259bc0e7cf4SDavid Howells n = *_pos & ((1U << shift) - 1); 260bc0e7cf4SDavid Howells bucket = *_pos >> shift; 261bc0e7cf4SDavid Howells for (;;) { 262bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 263bc0e7cf4SDavid Howells *_pos = UINT_MAX; 264bc0e7cf4SDavid Howells return NULL; 265bc0e7cf4SDavid Howells } 266bc0e7cf4SDavid Howells if (n == 0) { 267bc0e7cf4SDavid Howells if (bucket == 0) 268bc0e7cf4SDavid Howells return SEQ_START_TOKEN; 269bc0e7cf4SDavid Howells *_pos += 1; 270bc0e7cf4SDavid Howells n++; 271bc0e7cf4SDavid Howells } 272bc0e7cf4SDavid Howells 273bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 274bc0e7cf4SDavid Howells if (p) 275bc0e7cf4SDavid Howells return p; 276bc0e7cf4SDavid Howells bucket++; 277bc0e7cf4SDavid Howells n = 1; 278bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 279bc0e7cf4SDavid Howells } 280bc0e7cf4SDavid Howells } 281bc0e7cf4SDavid Howells 282bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_next(struct seq_file *seq, void *v, loff_t *_pos) 283bc0e7cf4SDavid Howells { 284bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 285bc0e7cf4SDavid Howells unsigned int bucket, n; 286bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 287bc0e7cf4SDavid Howells void *p; 288bc0e7cf4SDavid Howells 289bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 290bc0e7cf4SDavid Howells return NULL; 291bc0e7cf4SDavid Howells 292bc0e7cf4SDavid Howells bucket = *_pos >> shift; 293bc0e7cf4SDavid Howells 294bc0e7cf4SDavid Howells p = seq_hlist_next_rcu(v, &rxnet->peer_hash[bucket], _pos); 295bc0e7cf4SDavid Howells if (p) 296bc0e7cf4SDavid Howells return p; 297bc0e7cf4SDavid Howells 298bc0e7cf4SDavid Howells for (;;) { 299bc0e7cf4SDavid Howells bucket++; 300bc0e7cf4SDavid Howells n = 1; 301bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 302bc0e7cf4SDavid Howells 303bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 304bc0e7cf4SDavid Howells *_pos = UINT_MAX; 305bc0e7cf4SDavid Howells return NULL; 306bc0e7cf4SDavid Howells } 307bc0e7cf4SDavid Howells if (n == 0) { 308bc0e7cf4SDavid Howells *_pos += 1; 309bc0e7cf4SDavid Howells n++; 310bc0e7cf4SDavid Howells } 311bc0e7cf4SDavid Howells 312bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 313bc0e7cf4SDavid Howells if (p) 314bc0e7cf4SDavid Howells return p; 315bc0e7cf4SDavid Howells } 316bc0e7cf4SDavid Howells } 317bc0e7cf4SDavid Howells 318bc0e7cf4SDavid Howells static void rxrpc_peer_seq_stop(struct seq_file *seq, void *v) 319bc0e7cf4SDavid Howells __releases(rcu) 320bc0e7cf4SDavid Howells { 321bc0e7cf4SDavid Howells rcu_read_unlock(); 322bc0e7cf4SDavid Howells } 323bc0e7cf4SDavid Howells 324bc0e7cf4SDavid Howells 325bc0e7cf4SDavid Howells const struct seq_operations rxrpc_peer_seq_ops = { 326bc0e7cf4SDavid Howells .start = rxrpc_peer_seq_start, 327bc0e7cf4SDavid Howells .next = rxrpc_peer_seq_next, 328bc0e7cf4SDavid Howells .stop = rxrpc_peer_seq_stop, 329bc0e7cf4SDavid Howells .show = rxrpc_peer_seq_show, 330bc0e7cf4SDavid Howells }; 33133912c26SDavid Howells 33233912c26SDavid Howells /* 33333912c26SDavid Howells * Generate a list of extant virtual local endpoints in /proc/net/rxrpc/locals 33433912c26SDavid Howells */ 33533912c26SDavid Howells static int rxrpc_local_seq_show(struct seq_file *seq, void *v) 33633912c26SDavid Howells { 33733912c26SDavid Howells struct rxrpc_local *local; 33833912c26SDavid Howells char lbuff[50]; 33933912c26SDavid Howells 34033912c26SDavid Howells if (v == SEQ_START_TOKEN) { 34133912c26SDavid Howells seq_puts(seq, 34233912c26SDavid Howells "Proto Local " 34333912c26SDavid Howells " Use Act\n"); 34433912c26SDavid Howells return 0; 34533912c26SDavid Howells } 34633912c26SDavid Howells 34733912c26SDavid Howells local = hlist_entry(v, struct rxrpc_local, link); 34833912c26SDavid Howells 34933912c26SDavid Howells sprintf(lbuff, "%pISpc", &local->srx.transport); 35033912c26SDavid Howells 35133912c26SDavid Howells seq_printf(seq, 35233912c26SDavid Howells "UDP %-47.47s %3u %3u\n", 35333912c26SDavid Howells lbuff, 354a0575429SDavid Howells refcount_read(&local->ref), 35533912c26SDavid Howells atomic_read(&local->active_users)); 35633912c26SDavid Howells 35733912c26SDavid Howells return 0; 35833912c26SDavid Howells } 35933912c26SDavid Howells 36033912c26SDavid Howells static void *rxrpc_local_seq_start(struct seq_file *seq, loff_t *_pos) 36133912c26SDavid Howells __acquires(rcu) 36233912c26SDavid Howells { 36333912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 36433912c26SDavid Howells unsigned int n; 36533912c26SDavid Howells 36633912c26SDavid Howells rcu_read_lock(); 36733912c26SDavid Howells 36833912c26SDavid Howells if (*_pos >= UINT_MAX) 36933912c26SDavid Howells return NULL; 37033912c26SDavid Howells 37133912c26SDavid Howells n = *_pos; 37233912c26SDavid Howells if (n == 0) 37333912c26SDavid Howells return SEQ_START_TOKEN; 37433912c26SDavid Howells 37533912c26SDavid Howells return seq_hlist_start_rcu(&rxnet->local_endpoints, n - 1); 37633912c26SDavid Howells } 37733912c26SDavid Howells 37833912c26SDavid Howells static void *rxrpc_local_seq_next(struct seq_file *seq, void *v, loff_t *_pos) 37933912c26SDavid Howells { 38033912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 38133912c26SDavid Howells 38233912c26SDavid Howells if (*_pos >= UINT_MAX) 38333912c26SDavid Howells return NULL; 38433912c26SDavid Howells 38533912c26SDavid Howells return seq_hlist_next_rcu(v, &rxnet->local_endpoints, _pos); 38633912c26SDavid Howells } 38733912c26SDavid Howells 38833912c26SDavid Howells static void rxrpc_local_seq_stop(struct seq_file *seq, void *v) 38933912c26SDavid Howells __releases(rcu) 39033912c26SDavid Howells { 39133912c26SDavid Howells rcu_read_unlock(); 39233912c26SDavid Howells } 39333912c26SDavid Howells 39433912c26SDavid Howells const struct seq_operations rxrpc_local_seq_ops = { 39533912c26SDavid Howells .start = rxrpc_local_seq_start, 39633912c26SDavid Howells .next = rxrpc_local_seq_next, 39733912c26SDavid Howells .stop = rxrpc_local_seq_stop, 39833912c26SDavid Howells .show = rxrpc_local_seq_show, 39933912c26SDavid Howells }; 400b0154246SDavid Howells 401b0154246SDavid Howells /* 402b0154246SDavid Howells * Display stats in /proc/net/rxrpc/stats 403b0154246SDavid Howells */ 404b0154246SDavid Howells int rxrpc_stats_show(struct seq_file *seq, void *v) 405b0154246SDavid Howells { 406b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(seq)); 407b0154246SDavid Howells 408b0154246SDavid Howells seq_printf(seq, 409b0154246SDavid Howells "Data : send=%u sendf=%u\n", 410b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data_send), 411b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data_send_frag)); 412b0154246SDavid Howells seq_printf(seq, 413b0154246SDavid Howells "Data-Tx : nr=%u retrans=%u\n", 414b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data), 415b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data_retrans)); 416b0154246SDavid Howells seq_printf(seq, 417b0154246SDavid Howells "Data-Rx : nr=%u reqack=%u jumbo=%u\n", 418b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data), 419b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data_reqack), 420b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data_jumbo)); 421b0154246SDavid Howells seq_printf(seq, 422f2a676d1SDavid Howells "Ack : fill=%u send=%u skip=%u\n", 423f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_fill), 424f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_send), 425f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_skip)); 426f2a676d1SDavid Howells seq_printf(seq, 427f2a676d1SDavid Howells "Ack-Tx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n", 428f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_REQUESTED]), 429f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DUPLICATE]), 430f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]), 431f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_EXCEEDS_WINDOW]), 432f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_NOSPACE]), 433f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING]), 434f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING_RESPONSE]), 435f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DELAY]), 436f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_IDLE])); 437f2a676d1SDavid Howells seq_printf(seq, 438f2a676d1SDavid Howells "Ack-Rx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n", 439f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_REQUESTED]), 440f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DUPLICATE]), 441f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]), 442f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_EXCEEDS_WINDOW]), 443f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_NOSPACE]), 444f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING]), 445f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING_RESPONSE]), 446f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DELAY]), 447f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_IDLE])); 448f2a676d1SDavid Howells seq_printf(seq, 449f7fa5242SDavid Howells "Why-Req-A: acklost=%u already=%u mrtt=%u ortt=%u\n", 450f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_ack_lost]), 451f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_already_on]), 452f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_more_rtt]), 453f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_old_rtt])); 454f7fa5242SDavid Howells seq_printf(seq, 455f7fa5242SDavid Howells "Why-Req-A: nolast=%u retx=%u slows=%u smtxw=%u\n", 456f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_no_srv_last]), 457f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_retrans]), 458f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_slow_start]), 459f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_small_txwin])); 460f7fa5242SDavid Howells seq_printf(seq, 461*02a19356SDavid Howells "Buffers : txb=%u,%u rxb=%u\n", 462*02a19356SDavid Howells atomic_read(&rxrpc_nr_txbuf), 463b0154246SDavid Howells atomic_read(&rxrpc_n_tx_skbs), 464b0154246SDavid Howells atomic_read(&rxrpc_n_rx_skbs)); 465b0154246SDavid Howells return 0; 466b0154246SDavid Howells } 467b0154246SDavid Howells 468b0154246SDavid Howells /* 469b0154246SDavid Howells * Clear stats if /proc/net/rxrpc/stats is written to. 470b0154246SDavid Howells */ 471b0154246SDavid Howells int rxrpc_stats_clear(struct file *file, char *buf, size_t size) 472b0154246SDavid Howells { 473b0154246SDavid Howells struct seq_file *m = file->private_data; 474b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(m)); 475b0154246SDavid Howells 476b0154246SDavid Howells if (size > 1 || (size == 1 && buf[0] != '\n')) 477b0154246SDavid Howells return -EINVAL; 478b0154246SDavid Howells 479b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data, 0); 480b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_retrans, 0); 481b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send, 0); 482b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send_frag, 0); 483b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data, 0); 484b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_reqack, 0); 485b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_jumbo, 0); 486f2a676d1SDavid Howells 487f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_fill, 0); 488f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_send, 0); 489f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_skip, 0); 490f2a676d1SDavid Howells memset(&rxnet->stat_tx_acks, 0, sizeof(rxnet->stat_tx_acks)); 491f2a676d1SDavid Howells memset(&rxnet->stat_rx_acks, 0, sizeof(rxnet->stat_rx_acks)); 492f7fa5242SDavid Howells 493f7fa5242SDavid Howells memset(&rxnet->stat_why_req_ack, 0, sizeof(rxnet->stat_why_req_ack)); 494b0154246SDavid Howells return size; 495b0154246SDavid Howells } 496