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", 20a00ce28bSDavid Howells [RXRPC_CONN_ABORTED] = "Aborted ", 218c3e34a4SDavid Howells }; 228c3e34a4SDavid Howells 238c3e34a4SDavid Howells /* 248c3e34a4SDavid Howells * generate a list of extant and dead calls in /proc/net/rxrpc_calls 258c3e34a4SDavid Howells */ 268c3e34a4SDavid Howells static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos) 2788f2a825SDavid Howells __acquires(rcu) 288c3e34a4SDavid Howells { 292baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 302baec2c3SDavid Howells 318d94aa38SDavid Howells rcu_read_lock(); 32ad25f5cbSDavid Howells return seq_list_start_head_rcu(&rxnet->calls, *_pos); 338c3e34a4SDavid Howells } 348c3e34a4SDavid Howells 358c3e34a4SDavid Howells static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos) 368c3e34a4SDavid Howells { 372baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 382baec2c3SDavid Howells 39ad25f5cbSDavid Howells return seq_list_next_rcu(v, &rxnet->calls, pos); 408c3e34a4SDavid Howells } 418c3e34a4SDavid Howells 428c3e34a4SDavid Howells static void rxrpc_call_seq_stop(struct seq_file *seq, void *v) 4388f2a825SDavid Howells __releases(rcu) 448c3e34a4SDavid Howells { 458d94aa38SDavid Howells rcu_read_unlock(); 468c3e34a4SDavid Howells } 478c3e34a4SDavid Howells 488c3e34a4SDavid Howells static int rxrpc_call_seq_show(struct seq_file *seq, void *v) 498c3e34a4SDavid Howells { 50df5d8bf7SDavid Howells struct rxrpc_local *local; 518c3e34a4SDavid Howells struct rxrpc_call *call; 522baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 53*96b4059fSDavid Howells enum rxrpc_call_state state; 54770b26deSWei Yongjun unsigned long timeout = 0; 55a4ea4c47SDavid Howells rxrpc_seq_t acks_hard_ack; 5675b54cb5SDavid Howells char lbuff[50], rbuff[50]; 575d7edbc9SDavid Howells u64 wtmp; 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 78*96b4059fSDavid Howells state = rxrpc_call_state(call); 79*96b4059fSDavid 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); 855d7edbc9SDavid Howells wtmp = atomic64_read_acquire(&call->ackr_window); 868c3e34a4SDavid Howells seq_printf(seq, 8775b54cb5SDavid Howells "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u" 885086d9a9SDavid Howells " %-8.8s %08x %08x %08x %02x %08x %02x %08x %02x %06lx\n", 898c3e34a4SDavid Howells lbuff, 908c3e34a4SDavid Howells rbuff, 91f3441d41SDavid Howells call->dest_srx.srx_service, 928c3e34a4SDavid Howells call->cid, 938c3e34a4SDavid Howells call->call_id, 94dabe5a79SDavid Howells rxrpc_is_service_call(call) ? "Svc" : "Clt", 95a0575429SDavid Howells refcount_read(&call->ref), 96*96b4059fSDavid Howells rxrpc_call_states[state], 97f5c17aaeSDavid Howells call->abort_code, 9832f71aa4SDavid Howells call->debug_id, 99a4ea4c47SDavid Howells acks_hard_ack, READ_ONCE(call->tx_top) - acks_hard_ack, 1005d7edbc9SDavid Howells lower_32_bits(wtmp), upper_32_bits(wtmp) - lower_32_bits(wtmp), 1016b97bd7aSDavid Howells call->rx_serial, 1025086d9a9SDavid Howells call->cong_cwnd, 103887763bbSDavid Howells timeout); 1048c3e34a4SDavid Howells 1058c3e34a4SDavid Howells return 0; 1068c3e34a4SDavid Howells } 1078c3e34a4SDavid Howells 108c3506372SChristoph Hellwig const struct seq_operations rxrpc_call_seq_ops = { 1098c3e34a4SDavid Howells .start = rxrpc_call_seq_start, 1108c3e34a4SDavid Howells .next = rxrpc_call_seq_next, 1118c3e34a4SDavid Howells .stop = rxrpc_call_seq_stop, 1128c3e34a4SDavid Howells .show = rxrpc_call_seq_show, 1138c3e34a4SDavid Howells }; 1148c3e34a4SDavid Howells 1158c3e34a4SDavid Howells /* 1168c3e34a4SDavid Howells * generate a list of extant virtual connections in /proc/net/rxrpc_conns 1178c3e34a4SDavid Howells */ 1188c3e34a4SDavid Howells static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) 11988f2a825SDavid Howells __acquires(rxnet->conn_lock) 1208c3e34a4SDavid Howells { 1212baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1222baec2c3SDavid Howells 1232baec2c3SDavid Howells read_lock(&rxnet->conn_lock); 1242baec2c3SDavid Howells return seq_list_start_head(&rxnet->conn_proc_list, *_pos); 1258c3e34a4SDavid Howells } 1268c3e34a4SDavid Howells 1278c3e34a4SDavid Howells static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, 1288c3e34a4SDavid Howells loff_t *pos) 1298c3e34a4SDavid Howells { 1302baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1312baec2c3SDavid Howells 1322baec2c3SDavid Howells return seq_list_next(v, &rxnet->conn_proc_list, pos); 1338c3e34a4SDavid Howells } 1348c3e34a4SDavid Howells 1358c3e34a4SDavid Howells static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) 13688f2a825SDavid Howells __releases(rxnet->conn_lock) 1378c3e34a4SDavid Howells { 1382baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1392baec2c3SDavid Howells 1402baec2c3SDavid Howells read_unlock(&rxnet->conn_lock); 1418c3e34a4SDavid Howells } 1428c3e34a4SDavid Howells 1438c3e34a4SDavid Howells static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) 1448c3e34a4SDavid Howells { 1458c3e34a4SDavid Howells struct rxrpc_connection *conn; 1462baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 147a00ce28bSDavid Howells const char *state; 14875b54cb5SDavid Howells char lbuff[50], rbuff[50]; 1498c3e34a4SDavid Howells 1502baec2c3SDavid Howells if (v == &rxnet->conn_proc_list) { 1518c3e34a4SDavid Howells seq_puts(seq, 15275b54cb5SDavid Howells "Proto Local " 15375b54cb5SDavid Howells " Remote " 1543cec055cSDavid Howells " SvID ConnID End Ref Act State Key " 155245500d8SDavid Howells " Serial ISerial CallId0 CallId1 CallId2 CallId3\n" 1568c3e34a4SDavid Howells ); 1578c3e34a4SDavid Howells return 0; 1588c3e34a4SDavid Howells } 1598c3e34a4SDavid Howells 1604d028b2cSDavid Howells conn = list_entry(v, struct rxrpc_connection, proc_link); 16100e90712SDavid Howells if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { 16200e90712SDavid Howells strcpy(lbuff, "no_local"); 16300e90712SDavid Howells strcpy(rbuff, "no_connection"); 16400e90712SDavid Howells goto print; 16500e90712SDavid Howells } 1668c3e34a4SDavid Howells 1672cc80086SDavid Howells sprintf(lbuff, "%pISpc", &conn->local->srx.transport); 1682cc80086SDavid Howells sprintf(rbuff, "%pISpc", &conn->peer->srx.transport); 16900e90712SDavid Howells print: 170a00ce28bSDavid Howells state = rxrpc_is_conn_aborted(conn) ? 171a00ce28bSDavid Howells rxrpc_call_completions[conn->completion] : 172a00ce28bSDavid Howells rxrpc_conn_states[conn->state]; 1738c3e34a4SDavid Howells seq_printf(seq, 1743cec055cSDavid Howells "UDP %-47.47s %-47.47s %4x %08x %s %3u %3d" 1756b97bd7aSDavid Howells " %s %08x %08x %08x %08x %08x %08x %08x\n", 1768c3e34a4SDavid Howells lbuff, 1778c3e34a4SDavid Howells rbuff, 17868d6d1aeSDavid Howells conn->service_id, 17919ffa01cSDavid Howells conn->proto.cid, 18019ffa01cSDavid Howells rxrpc_conn_is_service(conn) ? "Svc" : "Clt", 181a0575429SDavid Howells refcount_read(&conn->ref), 1823cec055cSDavid Howells atomic_read(&conn->active), 183a00ce28bSDavid Howells state, 1842cc80086SDavid Howells key_serial(conn->key), 1858c3e34a4SDavid Howells atomic_read(&conn->serial), 1866b97bd7aSDavid Howells conn->hi_serial, 1876b97bd7aSDavid Howells conn->channels[0].call_id, 1886b97bd7aSDavid Howells conn->channels[1].call_id, 1896b97bd7aSDavid Howells conn->channels[2].call_id, 1906b97bd7aSDavid Howells conn->channels[3].call_id); 1918c3e34a4SDavid Howells 1928c3e34a4SDavid Howells return 0; 1938c3e34a4SDavid Howells } 1948c3e34a4SDavid Howells 195c3506372SChristoph Hellwig const struct seq_operations rxrpc_connection_seq_ops = { 1968c3e34a4SDavid Howells .start = rxrpc_connection_seq_start, 1978c3e34a4SDavid Howells .next = rxrpc_connection_seq_next, 1988c3e34a4SDavid Howells .stop = rxrpc_connection_seq_stop, 1998c3e34a4SDavid Howells .show = rxrpc_connection_seq_show, 2008c3e34a4SDavid Howells }; 201bc0e7cf4SDavid Howells 202bc0e7cf4SDavid Howells /* 203bc0e7cf4SDavid Howells * generate a list of extant virtual peers in /proc/net/rxrpc/peers 204bc0e7cf4SDavid Howells */ 205bc0e7cf4SDavid Howells static int rxrpc_peer_seq_show(struct seq_file *seq, void *v) 206bc0e7cf4SDavid Howells { 207bc0e7cf4SDavid Howells struct rxrpc_peer *peer; 208bc0e7cf4SDavid Howells time64_t now; 209bc0e7cf4SDavid Howells char lbuff[50], rbuff[50]; 210bc0e7cf4SDavid Howells 211bc0e7cf4SDavid Howells if (v == SEQ_START_TOKEN) { 212bc0e7cf4SDavid Howells seq_puts(seq, 213bc0e7cf4SDavid Howells "Proto Local " 214bc0e7cf4SDavid Howells " Remote " 2151fc4fa2aSDavid Howells " Use SST MTU LastUse RTT RTO\n" 216bc0e7cf4SDavid Howells ); 217bc0e7cf4SDavid Howells return 0; 218bc0e7cf4SDavid Howells } 219bc0e7cf4SDavid Howells 220bc0e7cf4SDavid Howells peer = list_entry(v, struct rxrpc_peer, hash_link); 221bc0e7cf4SDavid Howells 222bc0e7cf4SDavid Howells sprintf(lbuff, "%pISpc", &peer->local->srx.transport); 223bc0e7cf4SDavid Howells 224bc0e7cf4SDavid Howells sprintf(rbuff, "%pISpc", &peer->srx.transport); 225bc0e7cf4SDavid Howells 226bc0e7cf4SDavid Howells now = ktime_get_seconds(); 227bc0e7cf4SDavid Howells seq_printf(seq, 228bc0e7cf4SDavid Howells "UDP %-47.47s %-47.47s %3u" 229c410bf01SDavid Howells " %3u %5u %6llus %8u %8u\n", 230bc0e7cf4SDavid Howells lbuff, 231bc0e7cf4SDavid Howells rbuff, 232a0575429SDavid Howells refcount_read(&peer->ref), 2331fc4fa2aSDavid Howells peer->cong_ssthresh, 234bc0e7cf4SDavid Howells peer->mtu, 235bc0e7cf4SDavid Howells now - peer->last_tx_at, 236c410bf01SDavid Howells peer->srtt_us >> 3, 237c410bf01SDavid Howells jiffies_to_usecs(peer->rto_j)); 238bc0e7cf4SDavid Howells 239bc0e7cf4SDavid Howells return 0; 240bc0e7cf4SDavid Howells } 241bc0e7cf4SDavid Howells 242bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_start(struct seq_file *seq, loff_t *_pos) 243bc0e7cf4SDavid Howells __acquires(rcu) 244bc0e7cf4SDavid Howells { 245bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 246bc0e7cf4SDavid Howells unsigned int bucket, n; 247bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 248bc0e7cf4SDavid Howells void *p; 249bc0e7cf4SDavid Howells 250bc0e7cf4SDavid Howells rcu_read_lock(); 251bc0e7cf4SDavid Howells 252bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 253bc0e7cf4SDavid Howells return NULL; 254bc0e7cf4SDavid Howells 255bc0e7cf4SDavid Howells n = *_pos & ((1U << shift) - 1); 256bc0e7cf4SDavid Howells bucket = *_pos >> shift; 257bc0e7cf4SDavid Howells for (;;) { 258bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 259bc0e7cf4SDavid Howells *_pos = UINT_MAX; 260bc0e7cf4SDavid Howells return NULL; 261bc0e7cf4SDavid Howells } 262bc0e7cf4SDavid Howells if (n == 0) { 263bc0e7cf4SDavid Howells if (bucket == 0) 264bc0e7cf4SDavid Howells return SEQ_START_TOKEN; 265bc0e7cf4SDavid Howells *_pos += 1; 266bc0e7cf4SDavid Howells n++; 267bc0e7cf4SDavid Howells } 268bc0e7cf4SDavid Howells 269bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 270bc0e7cf4SDavid Howells if (p) 271bc0e7cf4SDavid Howells return p; 272bc0e7cf4SDavid Howells bucket++; 273bc0e7cf4SDavid Howells n = 1; 274bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 275bc0e7cf4SDavid Howells } 276bc0e7cf4SDavid Howells } 277bc0e7cf4SDavid Howells 278bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_next(struct seq_file *seq, void *v, loff_t *_pos) 279bc0e7cf4SDavid Howells { 280bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 281bc0e7cf4SDavid Howells unsigned int bucket, n; 282bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 283bc0e7cf4SDavid Howells void *p; 284bc0e7cf4SDavid Howells 285bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 286bc0e7cf4SDavid Howells return NULL; 287bc0e7cf4SDavid Howells 288bc0e7cf4SDavid Howells bucket = *_pos >> shift; 289bc0e7cf4SDavid Howells 290bc0e7cf4SDavid Howells p = seq_hlist_next_rcu(v, &rxnet->peer_hash[bucket], _pos); 291bc0e7cf4SDavid Howells if (p) 292bc0e7cf4SDavid Howells return p; 293bc0e7cf4SDavid Howells 294bc0e7cf4SDavid Howells for (;;) { 295bc0e7cf4SDavid Howells bucket++; 296bc0e7cf4SDavid Howells n = 1; 297bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 298bc0e7cf4SDavid Howells 299bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 300bc0e7cf4SDavid Howells *_pos = UINT_MAX; 301bc0e7cf4SDavid Howells return NULL; 302bc0e7cf4SDavid Howells } 303bc0e7cf4SDavid Howells if (n == 0) { 304bc0e7cf4SDavid Howells *_pos += 1; 305bc0e7cf4SDavid Howells n++; 306bc0e7cf4SDavid Howells } 307bc0e7cf4SDavid Howells 308bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 309bc0e7cf4SDavid Howells if (p) 310bc0e7cf4SDavid Howells return p; 311bc0e7cf4SDavid Howells } 312bc0e7cf4SDavid Howells } 313bc0e7cf4SDavid Howells 314bc0e7cf4SDavid Howells static void rxrpc_peer_seq_stop(struct seq_file *seq, void *v) 315bc0e7cf4SDavid Howells __releases(rcu) 316bc0e7cf4SDavid Howells { 317bc0e7cf4SDavid Howells rcu_read_unlock(); 318bc0e7cf4SDavid Howells } 319bc0e7cf4SDavid Howells 320bc0e7cf4SDavid Howells 321bc0e7cf4SDavid Howells const struct seq_operations rxrpc_peer_seq_ops = { 322bc0e7cf4SDavid Howells .start = rxrpc_peer_seq_start, 323bc0e7cf4SDavid Howells .next = rxrpc_peer_seq_next, 324bc0e7cf4SDavid Howells .stop = rxrpc_peer_seq_stop, 325bc0e7cf4SDavid Howells .show = rxrpc_peer_seq_show, 326bc0e7cf4SDavid Howells }; 32733912c26SDavid Howells 32833912c26SDavid Howells /* 32933912c26SDavid Howells * Generate a list of extant virtual local endpoints in /proc/net/rxrpc/locals 33033912c26SDavid Howells */ 33133912c26SDavid Howells static int rxrpc_local_seq_show(struct seq_file *seq, void *v) 33233912c26SDavid Howells { 33333912c26SDavid Howells struct rxrpc_local *local; 33433912c26SDavid Howells char lbuff[50]; 33533912c26SDavid Howells 33633912c26SDavid Howells if (v == SEQ_START_TOKEN) { 33733912c26SDavid Howells seq_puts(seq, 33833912c26SDavid Howells "Proto Local " 339a275da62SDavid Howells " Use Act RxQ\n"); 34033912c26SDavid Howells return 0; 34133912c26SDavid Howells } 34233912c26SDavid Howells 34333912c26SDavid Howells local = hlist_entry(v, struct rxrpc_local, link); 34433912c26SDavid Howells 34533912c26SDavid Howells sprintf(lbuff, "%pISpc", &local->srx.transport); 34633912c26SDavid Howells 34733912c26SDavid Howells seq_printf(seq, 348a275da62SDavid Howells "UDP %-47.47s %3u %3u %3u\n", 34933912c26SDavid Howells lbuff, 350a0575429SDavid Howells refcount_read(&local->ref), 351a275da62SDavid Howells atomic_read(&local->active_users), 352a275da62SDavid Howells local->rx_queue.qlen); 35333912c26SDavid Howells 35433912c26SDavid Howells return 0; 35533912c26SDavid Howells } 35633912c26SDavid Howells 35733912c26SDavid Howells static void *rxrpc_local_seq_start(struct seq_file *seq, loff_t *_pos) 35833912c26SDavid Howells __acquires(rcu) 35933912c26SDavid Howells { 36033912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 36133912c26SDavid Howells unsigned int n; 36233912c26SDavid Howells 36333912c26SDavid Howells rcu_read_lock(); 36433912c26SDavid Howells 36533912c26SDavid Howells if (*_pos >= UINT_MAX) 36633912c26SDavid Howells return NULL; 36733912c26SDavid Howells 36833912c26SDavid Howells n = *_pos; 36933912c26SDavid Howells if (n == 0) 37033912c26SDavid Howells return SEQ_START_TOKEN; 37133912c26SDavid Howells 37233912c26SDavid Howells return seq_hlist_start_rcu(&rxnet->local_endpoints, n - 1); 37333912c26SDavid Howells } 37433912c26SDavid Howells 37533912c26SDavid Howells static void *rxrpc_local_seq_next(struct seq_file *seq, void *v, loff_t *_pos) 37633912c26SDavid Howells { 37733912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 37833912c26SDavid Howells 37933912c26SDavid Howells if (*_pos >= UINT_MAX) 38033912c26SDavid Howells return NULL; 38133912c26SDavid Howells 38233912c26SDavid Howells return seq_hlist_next_rcu(v, &rxnet->local_endpoints, _pos); 38333912c26SDavid Howells } 38433912c26SDavid Howells 38533912c26SDavid Howells static void rxrpc_local_seq_stop(struct seq_file *seq, void *v) 38633912c26SDavid Howells __releases(rcu) 38733912c26SDavid Howells { 38833912c26SDavid Howells rcu_read_unlock(); 38933912c26SDavid Howells } 39033912c26SDavid Howells 39133912c26SDavid Howells const struct seq_operations rxrpc_local_seq_ops = { 39233912c26SDavid Howells .start = rxrpc_local_seq_start, 39333912c26SDavid Howells .next = rxrpc_local_seq_next, 39433912c26SDavid Howells .stop = rxrpc_local_seq_stop, 39533912c26SDavid Howells .show = rxrpc_local_seq_show, 39633912c26SDavid Howells }; 397b0154246SDavid Howells 398b0154246SDavid Howells /* 399b0154246SDavid Howells * Display stats in /proc/net/rxrpc/stats 400b0154246SDavid Howells */ 401b0154246SDavid Howells int rxrpc_stats_show(struct seq_file *seq, void *v) 402b0154246SDavid Howells { 403b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(seq)); 404b0154246SDavid Howells 405b0154246SDavid Howells seq_printf(seq, 40632cf8edbSDavid Howells "Data : send=%u sendf=%u fail=%u\n", 407b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data_send), 40832cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_send_frag), 40932cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_send_fail)); 410b0154246SDavid Howells seq_printf(seq, 41132cf8edbSDavid Howells "Data-Tx : nr=%u retrans=%u uf=%u cwr=%u\n", 412b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data), 41332cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_retrans), 41432cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_underflow), 41532cf8edbSDavid Howells atomic_read(&rxnet->stat_tx_data_cwnd_reset)); 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, 461a4ea4c47SDavid Howells "Buffers : txb=%u rxb=%u\n", 46202a19356SDavid Howells atomic_read(&rxrpc_nr_txbuf), 463b0154246SDavid Howells atomic_read(&rxrpc_n_rx_skbs)); 464a275da62SDavid Howells seq_printf(seq, 465a275da62SDavid Howells "IO-thread: loops=%u\n", 466a275da62SDavid Howells atomic_read(&rxnet->stat_io_loop)); 467b0154246SDavid Howells return 0; 468b0154246SDavid Howells } 469b0154246SDavid Howells 470b0154246SDavid Howells /* 471b0154246SDavid Howells * Clear stats if /proc/net/rxrpc/stats is written to. 472b0154246SDavid Howells */ 473b0154246SDavid Howells int rxrpc_stats_clear(struct file *file, char *buf, size_t size) 474b0154246SDavid Howells { 475b0154246SDavid Howells struct seq_file *m = file->private_data; 476b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(m)); 477b0154246SDavid Howells 478b0154246SDavid Howells if (size > 1 || (size == 1 && buf[0] != '\n')) 479b0154246SDavid Howells return -EINVAL; 480b0154246SDavid Howells 481b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data, 0); 482b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_retrans, 0); 48332cf8edbSDavid Howells atomic_set(&rxnet->stat_tx_data_underflow, 0); 48432cf8edbSDavid Howells atomic_set(&rxnet->stat_tx_data_cwnd_reset, 0); 485b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send, 0); 486b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send_frag, 0); 48732cf8edbSDavid Howells atomic_set(&rxnet->stat_tx_data_send_fail, 0); 488b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data, 0); 489b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_reqack, 0); 490b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_jumbo, 0); 491f2a676d1SDavid Howells 492f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_fill, 0); 493f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_send, 0); 494f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_skip, 0); 495f2a676d1SDavid Howells memset(&rxnet->stat_tx_acks, 0, sizeof(rxnet->stat_tx_acks)); 496f2a676d1SDavid Howells memset(&rxnet->stat_rx_acks, 0, sizeof(rxnet->stat_rx_acks)); 497f7fa5242SDavid Howells 498f7fa5242SDavid Howells memset(&rxnet->stat_why_req_ack, 0, sizeof(rxnet->stat_why_req_ack)); 499a275da62SDavid Howells 500a275da62SDavid Howells atomic_set(&rxnet->stat_io_loop, 0); 501b0154246SDavid Howells return size; 502b0154246SDavid Howells } 503