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) 2988f2a825SDavid Howells __acquires(rxnet->call_lock) 308c3e34a4SDavid Howells { 312baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 322baec2c3SDavid Howells 338d94aa38SDavid Howells rcu_read_lock(); 342baec2c3SDavid Howells read_lock(&rxnet->call_lock); 352baec2c3SDavid Howells return seq_list_start_head(&rxnet->calls, *_pos); 368c3e34a4SDavid Howells } 378c3e34a4SDavid Howells 388c3e34a4SDavid Howells static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos) 398c3e34a4SDavid Howells { 402baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 412baec2c3SDavid Howells 422baec2c3SDavid Howells return seq_list_next(v, &rxnet->calls, pos); 438c3e34a4SDavid Howells } 448c3e34a4SDavid Howells 458c3e34a4SDavid Howells static void rxrpc_call_seq_stop(struct seq_file *seq, void *v) 4688f2a825SDavid Howells __releases(rxnet->call_lock) 4788f2a825SDavid Howells __releases(rcu) 488c3e34a4SDavid Howells { 492baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 502baec2c3SDavid Howells 512baec2c3SDavid Howells read_unlock(&rxnet->call_lock); 528d94aa38SDavid Howells rcu_read_unlock(); 538c3e34a4SDavid Howells } 548c3e34a4SDavid Howells 558c3e34a4SDavid Howells static int rxrpc_call_seq_show(struct seq_file *seq, void *v) 568c3e34a4SDavid Howells { 57df5d8bf7SDavid Howells struct rxrpc_local *local; 58df5d8bf7SDavid Howells struct rxrpc_sock *rx; 59df5d8bf7SDavid Howells struct rxrpc_peer *peer; 608c3e34a4SDavid Howells struct rxrpc_call *call; 612baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 62770b26deSWei Yongjun unsigned long timeout = 0; 633e018dafSDavid Howells rxrpc_seq_t tx_hard_ack, rx_hard_ack; 6475b54cb5SDavid Howells char lbuff[50], rbuff[50]; 658c3e34a4SDavid Howells 662baec2c3SDavid Howells if (v == &rxnet->calls) { 678c3e34a4SDavid Howells seq_puts(seq, 6875b54cb5SDavid Howells "Proto Local " 6975b54cb5SDavid Howells " Remote " 708c3e34a4SDavid Howells " SvID ConnID CallID End Use State Abort " 716b97bd7aSDavid Howells " UserID TxSeq TW RxSeq RW RxSerial RxTimo\n"); 728c3e34a4SDavid Howells return 0; 738c3e34a4SDavid Howells } 748c3e34a4SDavid Howells 758c3e34a4SDavid Howells call = list_entry(v, struct rxrpc_call, link); 768c3e34a4SDavid Howells 778d94aa38SDavid Howells rx = rcu_dereference(call->socket); 78df5d8bf7SDavid Howells if (rx) { 79df5d8bf7SDavid Howells local = READ_ONCE(rx->local); 80df5d8bf7SDavid Howells if (local) 8175b54cb5SDavid Howells sprintf(lbuff, "%pISpc", &local->srx.transport); 82df5d8bf7SDavid Howells else 83df5d8bf7SDavid Howells strcpy(lbuff, "no_local"); 84df5d8bf7SDavid Howells } else { 85df5d8bf7SDavid Howells strcpy(lbuff, "no_socket"); 86df5d8bf7SDavid Howells } 878c3e34a4SDavid Howells 88df5d8bf7SDavid Howells peer = call->peer; 89df5d8bf7SDavid Howells if (peer) 9075b54cb5SDavid Howells sprintf(rbuff, "%pISpc", &peer->srx.transport); 91f4e7da8cSDavid Howells else 92f4e7da8cSDavid Howells strcpy(rbuff, "no_connection"); 938c3e34a4SDavid Howells 94887763bbSDavid Howells if (call->state != RXRPC_CALL_SERVER_PREALLOC) { 95887763bbSDavid Howells timeout = READ_ONCE(call->expect_rx_by); 96887763bbSDavid Howells timeout -= jiffies; 97887763bbSDavid Howells } 98887763bbSDavid Howells 993e018dafSDavid Howells tx_hard_ack = READ_ONCE(call->tx_hard_ack); 1003e018dafSDavid Howells rx_hard_ack = READ_ONCE(call->rx_hard_ack); 1018c3e34a4SDavid Howells seq_printf(seq, 10275b54cb5SDavid Howells "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u" 1036b97bd7aSDavid Howells " %-8.8s %08x %lx %08x %02x %08x %02x %08x %06lx\n", 1048c3e34a4SDavid Howells lbuff, 1058c3e34a4SDavid Howells rbuff, 106f4e7da8cSDavid Howells call->service_id, 1078c3e34a4SDavid Howells call->cid, 1088c3e34a4SDavid Howells call->call_id, 109dabe5a79SDavid Howells rxrpc_is_service_call(call) ? "Svc" : "Clt", 1108c3e34a4SDavid Howells atomic_read(&call->usage), 1118c3e34a4SDavid Howells rxrpc_call_states[call->state], 112f5c17aaeSDavid Howells call->abort_code, 1133e018dafSDavid Howells call->user_call_ID, 1143e018dafSDavid Howells tx_hard_ack, READ_ONCE(call->tx_top) - tx_hard_ack, 115887763bbSDavid Howells rx_hard_ack, READ_ONCE(call->rx_top) - rx_hard_ack, 1166b97bd7aSDavid Howells call->rx_serial, 117887763bbSDavid Howells timeout); 1188c3e34a4SDavid Howells 1198c3e34a4SDavid Howells return 0; 1208c3e34a4SDavid Howells } 1218c3e34a4SDavid Howells 122c3506372SChristoph Hellwig const struct seq_operations rxrpc_call_seq_ops = { 1238c3e34a4SDavid Howells .start = rxrpc_call_seq_start, 1248c3e34a4SDavid Howells .next = rxrpc_call_seq_next, 1258c3e34a4SDavid Howells .stop = rxrpc_call_seq_stop, 1268c3e34a4SDavid Howells .show = rxrpc_call_seq_show, 1278c3e34a4SDavid Howells }; 1288c3e34a4SDavid Howells 1298c3e34a4SDavid Howells /* 1308c3e34a4SDavid Howells * generate a list of extant virtual connections in /proc/net/rxrpc_conns 1318c3e34a4SDavid Howells */ 1328c3e34a4SDavid Howells static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) 13388f2a825SDavid Howells __acquires(rxnet->conn_lock) 1348c3e34a4SDavid Howells { 1352baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1362baec2c3SDavid Howells 1372baec2c3SDavid Howells read_lock(&rxnet->conn_lock); 1382baec2c3SDavid Howells return seq_list_start_head(&rxnet->conn_proc_list, *_pos); 1398c3e34a4SDavid Howells } 1408c3e34a4SDavid Howells 1418c3e34a4SDavid Howells static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, 1428c3e34a4SDavid Howells loff_t *pos) 1438c3e34a4SDavid Howells { 1442baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1452baec2c3SDavid Howells 1462baec2c3SDavid Howells return seq_list_next(v, &rxnet->conn_proc_list, pos); 1478c3e34a4SDavid Howells } 1488c3e34a4SDavid Howells 1498c3e34a4SDavid Howells static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) 15088f2a825SDavid Howells __releases(rxnet->conn_lock) 1518c3e34a4SDavid Howells { 1522baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1532baec2c3SDavid Howells 1542baec2c3SDavid Howells read_unlock(&rxnet->conn_lock); 1558c3e34a4SDavid Howells } 1568c3e34a4SDavid Howells 1578c3e34a4SDavid Howells static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) 1588c3e34a4SDavid Howells { 1598c3e34a4SDavid Howells struct rxrpc_connection *conn; 1602baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 16175b54cb5SDavid Howells char lbuff[50], rbuff[50]; 1628c3e34a4SDavid Howells 1632baec2c3SDavid Howells if (v == &rxnet->conn_proc_list) { 1648c3e34a4SDavid Howells seq_puts(seq, 16575b54cb5SDavid Howells "Proto Local " 16675b54cb5SDavid Howells " Remote " 167a1399f8bSDavid Howells " SvID ConnID End Use State Key " 1688c3e34a4SDavid Howells " Serial ISerial\n" 1698c3e34a4SDavid Howells ); 1708c3e34a4SDavid Howells return 0; 1718c3e34a4SDavid Howells } 1728c3e34a4SDavid Howells 1734d028b2cSDavid Howells conn = list_entry(v, struct rxrpc_connection, proc_link); 17400e90712SDavid Howells if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { 17500e90712SDavid Howells strcpy(lbuff, "no_local"); 17600e90712SDavid Howells strcpy(rbuff, "no_connection"); 17700e90712SDavid Howells goto print; 17800e90712SDavid Howells } 1798c3e34a4SDavid Howells 18075b54cb5SDavid Howells sprintf(lbuff, "%pISpc", &conn->params.local->srx.transport); 1818c3e34a4SDavid Howells 18275b54cb5SDavid Howells sprintf(rbuff, "%pISpc", &conn->params.peer->srx.transport); 18300e90712SDavid Howells print: 1848c3e34a4SDavid Howells seq_printf(seq, 18575b54cb5SDavid Howells "UDP %-47.47s %-47.47s %4x %08x %s %3u" 1866b97bd7aSDavid Howells " %s %08x %08x %08x %08x %08x %08x %08x\n", 1878c3e34a4SDavid Howells lbuff, 1888c3e34a4SDavid Howells rbuff, 18968d6d1aeSDavid Howells conn->service_id, 19019ffa01cSDavid Howells conn->proto.cid, 19119ffa01cSDavid Howells rxrpc_conn_is_service(conn) ? "Svc" : "Clt", 1928c3e34a4SDavid Howells atomic_read(&conn->usage), 1938c3e34a4SDavid Howells rxrpc_conn_states[conn->state], 19419ffa01cSDavid Howells key_serial(conn->params.key), 1958c3e34a4SDavid Howells atomic_read(&conn->serial), 1966b97bd7aSDavid Howells conn->hi_serial, 1976b97bd7aSDavid Howells conn->channels[0].call_id, 1986b97bd7aSDavid Howells conn->channels[1].call_id, 1996b97bd7aSDavid Howells conn->channels[2].call_id, 2006b97bd7aSDavid Howells conn->channels[3].call_id); 2018c3e34a4SDavid Howells 2028c3e34a4SDavid Howells return 0; 2038c3e34a4SDavid Howells } 2048c3e34a4SDavid Howells 205c3506372SChristoph Hellwig const struct seq_operations rxrpc_connection_seq_ops = { 2068c3e34a4SDavid Howells .start = rxrpc_connection_seq_start, 2078c3e34a4SDavid Howells .next = rxrpc_connection_seq_next, 2088c3e34a4SDavid Howells .stop = rxrpc_connection_seq_stop, 2098c3e34a4SDavid Howells .show = rxrpc_connection_seq_show, 2108c3e34a4SDavid Howells }; 211bc0e7cf4SDavid Howells 212bc0e7cf4SDavid Howells /* 213bc0e7cf4SDavid Howells * generate a list of extant virtual peers in /proc/net/rxrpc/peers 214bc0e7cf4SDavid Howells */ 215bc0e7cf4SDavid Howells static int rxrpc_peer_seq_show(struct seq_file *seq, void *v) 216bc0e7cf4SDavid Howells { 217bc0e7cf4SDavid Howells struct rxrpc_peer *peer; 218bc0e7cf4SDavid Howells time64_t now; 219bc0e7cf4SDavid Howells char lbuff[50], rbuff[50]; 220bc0e7cf4SDavid Howells 221bc0e7cf4SDavid Howells if (v == SEQ_START_TOKEN) { 222bc0e7cf4SDavid Howells seq_puts(seq, 223bc0e7cf4SDavid Howells "Proto Local " 224bc0e7cf4SDavid Howells " Remote " 225c410bf01SDavid Howells " Use CW MTU LastUse RTT RTO\n" 226bc0e7cf4SDavid Howells ); 227bc0e7cf4SDavid Howells return 0; 228bc0e7cf4SDavid Howells } 229bc0e7cf4SDavid Howells 230bc0e7cf4SDavid Howells peer = list_entry(v, struct rxrpc_peer, hash_link); 231bc0e7cf4SDavid Howells 232bc0e7cf4SDavid Howells sprintf(lbuff, "%pISpc", &peer->local->srx.transport); 233bc0e7cf4SDavid Howells 234bc0e7cf4SDavid Howells sprintf(rbuff, "%pISpc", &peer->srx.transport); 235bc0e7cf4SDavid Howells 236bc0e7cf4SDavid Howells now = ktime_get_seconds(); 237bc0e7cf4SDavid Howells seq_printf(seq, 238bc0e7cf4SDavid Howells "UDP %-47.47s %-47.47s %3u" 239c410bf01SDavid Howells " %3u %5u %6llus %8u %8u\n", 240bc0e7cf4SDavid Howells lbuff, 241bc0e7cf4SDavid Howells rbuff, 242bc0e7cf4SDavid Howells atomic_read(&peer->usage), 243bc0e7cf4SDavid Howells peer->cong_cwnd, 244bc0e7cf4SDavid Howells peer->mtu, 245bc0e7cf4SDavid Howells now - peer->last_tx_at, 246c410bf01SDavid Howells peer->srtt_us >> 3, 247c410bf01SDavid Howells jiffies_to_usecs(peer->rto_j)); 248bc0e7cf4SDavid Howells 249bc0e7cf4SDavid Howells return 0; 250bc0e7cf4SDavid Howells } 251bc0e7cf4SDavid Howells 252bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_start(struct seq_file *seq, loff_t *_pos) 253bc0e7cf4SDavid Howells __acquires(rcu) 254bc0e7cf4SDavid Howells { 255bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 256bc0e7cf4SDavid Howells unsigned int bucket, n; 257bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 258bc0e7cf4SDavid Howells void *p; 259bc0e7cf4SDavid Howells 260bc0e7cf4SDavid Howells rcu_read_lock(); 261bc0e7cf4SDavid Howells 262bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 263bc0e7cf4SDavid Howells return NULL; 264bc0e7cf4SDavid Howells 265bc0e7cf4SDavid Howells n = *_pos & ((1U << shift) - 1); 266bc0e7cf4SDavid Howells bucket = *_pos >> shift; 267bc0e7cf4SDavid Howells for (;;) { 268bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 269bc0e7cf4SDavid Howells *_pos = UINT_MAX; 270bc0e7cf4SDavid Howells return NULL; 271bc0e7cf4SDavid Howells } 272bc0e7cf4SDavid Howells if (n == 0) { 273bc0e7cf4SDavid Howells if (bucket == 0) 274bc0e7cf4SDavid Howells return SEQ_START_TOKEN; 275bc0e7cf4SDavid Howells *_pos += 1; 276bc0e7cf4SDavid Howells n++; 277bc0e7cf4SDavid Howells } 278bc0e7cf4SDavid Howells 279bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 280bc0e7cf4SDavid Howells if (p) 281bc0e7cf4SDavid Howells return p; 282bc0e7cf4SDavid Howells bucket++; 283bc0e7cf4SDavid Howells n = 1; 284bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 285bc0e7cf4SDavid Howells } 286bc0e7cf4SDavid Howells } 287bc0e7cf4SDavid Howells 288bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_next(struct seq_file *seq, void *v, loff_t *_pos) 289bc0e7cf4SDavid Howells { 290bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 291bc0e7cf4SDavid Howells unsigned int bucket, n; 292bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 293bc0e7cf4SDavid Howells void *p; 294bc0e7cf4SDavid Howells 295bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 296bc0e7cf4SDavid Howells return NULL; 297bc0e7cf4SDavid Howells 298bc0e7cf4SDavid Howells bucket = *_pos >> shift; 299bc0e7cf4SDavid Howells 300bc0e7cf4SDavid Howells p = seq_hlist_next_rcu(v, &rxnet->peer_hash[bucket], _pos); 301bc0e7cf4SDavid Howells if (p) 302bc0e7cf4SDavid Howells return p; 303bc0e7cf4SDavid Howells 304bc0e7cf4SDavid Howells for (;;) { 305bc0e7cf4SDavid Howells bucket++; 306bc0e7cf4SDavid Howells n = 1; 307bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 308bc0e7cf4SDavid Howells 309bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 310bc0e7cf4SDavid Howells *_pos = UINT_MAX; 311bc0e7cf4SDavid Howells return NULL; 312bc0e7cf4SDavid Howells } 313bc0e7cf4SDavid Howells if (n == 0) { 314bc0e7cf4SDavid Howells *_pos += 1; 315bc0e7cf4SDavid Howells n++; 316bc0e7cf4SDavid Howells } 317bc0e7cf4SDavid Howells 318bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 319bc0e7cf4SDavid Howells if (p) 320bc0e7cf4SDavid Howells return p; 321bc0e7cf4SDavid Howells } 322bc0e7cf4SDavid Howells } 323bc0e7cf4SDavid Howells 324bc0e7cf4SDavid Howells static void rxrpc_peer_seq_stop(struct seq_file *seq, void *v) 325bc0e7cf4SDavid Howells __releases(rcu) 326bc0e7cf4SDavid Howells { 327bc0e7cf4SDavid Howells rcu_read_unlock(); 328bc0e7cf4SDavid Howells } 329bc0e7cf4SDavid Howells 330bc0e7cf4SDavid Howells 331bc0e7cf4SDavid Howells const struct seq_operations rxrpc_peer_seq_ops = { 332bc0e7cf4SDavid Howells .start = rxrpc_peer_seq_start, 333bc0e7cf4SDavid Howells .next = rxrpc_peer_seq_next, 334bc0e7cf4SDavid Howells .stop = rxrpc_peer_seq_stop, 335bc0e7cf4SDavid Howells .show = rxrpc_peer_seq_show, 336bc0e7cf4SDavid Howells }; 337