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; 528c3e34a4SDavid Howells struct rxrpc_call *call; 532baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 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 " 6432f71aa4SDavid Howells " DebugId TxSeq TW RxSeq RW RxSerial RxTimo\n"); 658c3e34a4SDavid Howells return 0; 668c3e34a4SDavid Howells } 678c3e34a4SDavid Howells 688c3e34a4SDavid Howells call = list_entry(v, struct rxrpc_call, link); 698c3e34a4SDavid Howells 70*f3441d41SDavid 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 76*f3441d41SDavid Howells sprintf(rbuff, "%pISpc", &call->dest_srx.transport); 778c3e34a4SDavid Howells 78887763bbSDavid Howells if (call->state != RXRPC_CALL_SERVER_PREALLOC) { 79887763bbSDavid Howells timeout = READ_ONCE(call->expect_rx_by); 80887763bbSDavid Howells timeout -= jiffies; 81887763bbSDavid Howells } 82887763bbSDavid Howells 83a4ea4c47SDavid Howells acks_hard_ack = READ_ONCE(call->acks_hard_ack); 845d7edbc9SDavid Howells wtmp = atomic64_read_acquire(&call->ackr_window); 858c3e34a4SDavid Howells seq_printf(seq, 8675b54cb5SDavid Howells "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u" 8732f71aa4SDavid Howells " %-8.8s %08x %08x %08x %02x %08x %02x %08x %06lx\n", 888c3e34a4SDavid Howells lbuff, 898c3e34a4SDavid Howells rbuff, 90*f3441d41SDavid Howells call->dest_srx.srx_service, 918c3e34a4SDavid Howells call->cid, 928c3e34a4SDavid Howells call->call_id, 93dabe5a79SDavid Howells rxrpc_is_service_call(call) ? "Svc" : "Clt", 94a0575429SDavid Howells refcount_read(&call->ref), 958c3e34a4SDavid Howells rxrpc_call_states[call->state], 96f5c17aaeSDavid Howells call->abort_code, 9732f71aa4SDavid Howells call->debug_id, 98a4ea4c47SDavid Howells acks_hard_ack, READ_ONCE(call->tx_top) - acks_hard_ack, 995d7edbc9SDavid Howells lower_32_bits(wtmp), upper_32_bits(wtmp) - lower_32_bits(wtmp), 1006b97bd7aSDavid Howells call->rx_serial, 101887763bbSDavid Howells timeout); 1028c3e34a4SDavid Howells 1038c3e34a4SDavid Howells return 0; 1048c3e34a4SDavid Howells } 1058c3e34a4SDavid Howells 106c3506372SChristoph Hellwig const struct seq_operations rxrpc_call_seq_ops = { 1078c3e34a4SDavid Howells .start = rxrpc_call_seq_start, 1088c3e34a4SDavid Howells .next = rxrpc_call_seq_next, 1098c3e34a4SDavid Howells .stop = rxrpc_call_seq_stop, 1108c3e34a4SDavid Howells .show = rxrpc_call_seq_show, 1118c3e34a4SDavid Howells }; 1128c3e34a4SDavid Howells 1138c3e34a4SDavid Howells /* 1148c3e34a4SDavid Howells * generate a list of extant virtual connections in /proc/net/rxrpc_conns 1158c3e34a4SDavid Howells */ 1168c3e34a4SDavid Howells static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) 11788f2a825SDavid Howells __acquires(rxnet->conn_lock) 1188c3e34a4SDavid Howells { 1192baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1202baec2c3SDavid Howells 1212baec2c3SDavid Howells read_lock(&rxnet->conn_lock); 1222baec2c3SDavid Howells return seq_list_start_head(&rxnet->conn_proc_list, *_pos); 1238c3e34a4SDavid Howells } 1248c3e34a4SDavid Howells 1258c3e34a4SDavid Howells static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, 1268c3e34a4SDavid Howells loff_t *pos) 1278c3e34a4SDavid Howells { 1282baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1292baec2c3SDavid Howells 1302baec2c3SDavid Howells return seq_list_next(v, &rxnet->conn_proc_list, pos); 1318c3e34a4SDavid Howells } 1328c3e34a4SDavid Howells 1338c3e34a4SDavid Howells static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) 13488f2a825SDavid Howells __releases(rxnet->conn_lock) 1358c3e34a4SDavid Howells { 1362baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 1372baec2c3SDavid Howells 1382baec2c3SDavid Howells read_unlock(&rxnet->conn_lock); 1398c3e34a4SDavid Howells } 1408c3e34a4SDavid Howells 1418c3e34a4SDavid Howells static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) 1428c3e34a4SDavid Howells { 1438c3e34a4SDavid Howells struct rxrpc_connection *conn; 1442baec2c3SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 14575b54cb5SDavid Howells char lbuff[50], rbuff[50]; 1468c3e34a4SDavid Howells 1472baec2c3SDavid Howells if (v == &rxnet->conn_proc_list) { 1488c3e34a4SDavid Howells seq_puts(seq, 14975b54cb5SDavid Howells "Proto Local " 15075b54cb5SDavid Howells " Remote " 1513cec055cSDavid Howells " SvID ConnID End Ref Act State Key " 152245500d8SDavid Howells " Serial ISerial CallId0 CallId1 CallId2 CallId3\n" 1538c3e34a4SDavid Howells ); 1548c3e34a4SDavid Howells return 0; 1558c3e34a4SDavid Howells } 1568c3e34a4SDavid Howells 1574d028b2cSDavid Howells conn = list_entry(v, struct rxrpc_connection, proc_link); 15800e90712SDavid Howells if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { 15900e90712SDavid Howells strcpy(lbuff, "no_local"); 16000e90712SDavid Howells strcpy(rbuff, "no_connection"); 16100e90712SDavid Howells goto print; 16200e90712SDavid Howells } 1638c3e34a4SDavid Howells 1642cc80086SDavid Howells sprintf(lbuff, "%pISpc", &conn->local->srx.transport); 1658c3e34a4SDavid Howells 1662cc80086SDavid Howells sprintf(rbuff, "%pISpc", &conn->peer->srx.transport); 16700e90712SDavid Howells print: 1688c3e34a4SDavid Howells seq_printf(seq, 1693cec055cSDavid Howells "UDP %-47.47s %-47.47s %4x %08x %s %3u %3d" 1706b97bd7aSDavid Howells " %s %08x %08x %08x %08x %08x %08x %08x\n", 1718c3e34a4SDavid Howells lbuff, 1728c3e34a4SDavid Howells rbuff, 17368d6d1aeSDavid Howells conn->service_id, 17419ffa01cSDavid Howells conn->proto.cid, 17519ffa01cSDavid Howells rxrpc_conn_is_service(conn) ? "Svc" : "Clt", 176a0575429SDavid Howells refcount_read(&conn->ref), 1773cec055cSDavid Howells atomic_read(&conn->active), 1788c3e34a4SDavid Howells rxrpc_conn_states[conn->state], 1792cc80086SDavid Howells key_serial(conn->key), 1808c3e34a4SDavid Howells atomic_read(&conn->serial), 1816b97bd7aSDavid Howells conn->hi_serial, 1826b97bd7aSDavid Howells conn->channels[0].call_id, 1836b97bd7aSDavid Howells conn->channels[1].call_id, 1846b97bd7aSDavid Howells conn->channels[2].call_id, 1856b97bd7aSDavid Howells conn->channels[3].call_id); 1868c3e34a4SDavid Howells 1878c3e34a4SDavid Howells return 0; 1888c3e34a4SDavid Howells } 1898c3e34a4SDavid Howells 190c3506372SChristoph Hellwig const struct seq_operations rxrpc_connection_seq_ops = { 1918c3e34a4SDavid Howells .start = rxrpc_connection_seq_start, 1928c3e34a4SDavid Howells .next = rxrpc_connection_seq_next, 1938c3e34a4SDavid Howells .stop = rxrpc_connection_seq_stop, 1948c3e34a4SDavid Howells .show = rxrpc_connection_seq_show, 1958c3e34a4SDavid Howells }; 196bc0e7cf4SDavid Howells 197bc0e7cf4SDavid Howells /* 198bc0e7cf4SDavid Howells * generate a list of extant virtual peers in /proc/net/rxrpc/peers 199bc0e7cf4SDavid Howells */ 200bc0e7cf4SDavid Howells static int rxrpc_peer_seq_show(struct seq_file *seq, void *v) 201bc0e7cf4SDavid Howells { 202bc0e7cf4SDavid Howells struct rxrpc_peer *peer; 203bc0e7cf4SDavid Howells time64_t now; 204bc0e7cf4SDavid Howells char lbuff[50], rbuff[50]; 205bc0e7cf4SDavid Howells 206bc0e7cf4SDavid Howells if (v == SEQ_START_TOKEN) { 207bc0e7cf4SDavid Howells seq_puts(seq, 208bc0e7cf4SDavid Howells "Proto Local " 209bc0e7cf4SDavid Howells " Remote " 2101fc4fa2aSDavid Howells " Use SST MTU LastUse RTT RTO\n" 211bc0e7cf4SDavid Howells ); 212bc0e7cf4SDavid Howells return 0; 213bc0e7cf4SDavid Howells } 214bc0e7cf4SDavid Howells 215bc0e7cf4SDavid Howells peer = list_entry(v, struct rxrpc_peer, hash_link); 216bc0e7cf4SDavid Howells 217bc0e7cf4SDavid Howells sprintf(lbuff, "%pISpc", &peer->local->srx.transport); 218bc0e7cf4SDavid Howells 219bc0e7cf4SDavid Howells sprintf(rbuff, "%pISpc", &peer->srx.transport); 220bc0e7cf4SDavid Howells 221bc0e7cf4SDavid Howells now = ktime_get_seconds(); 222bc0e7cf4SDavid Howells seq_printf(seq, 223bc0e7cf4SDavid Howells "UDP %-47.47s %-47.47s %3u" 224c410bf01SDavid Howells " %3u %5u %6llus %8u %8u\n", 225bc0e7cf4SDavid Howells lbuff, 226bc0e7cf4SDavid Howells rbuff, 227a0575429SDavid Howells refcount_read(&peer->ref), 2281fc4fa2aSDavid Howells peer->cong_ssthresh, 229bc0e7cf4SDavid Howells peer->mtu, 230bc0e7cf4SDavid Howells now - peer->last_tx_at, 231c410bf01SDavid Howells peer->srtt_us >> 3, 232c410bf01SDavid Howells jiffies_to_usecs(peer->rto_j)); 233bc0e7cf4SDavid Howells 234bc0e7cf4SDavid Howells return 0; 235bc0e7cf4SDavid Howells } 236bc0e7cf4SDavid Howells 237bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_start(struct seq_file *seq, loff_t *_pos) 238bc0e7cf4SDavid Howells __acquires(rcu) 239bc0e7cf4SDavid Howells { 240bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 241bc0e7cf4SDavid Howells unsigned int bucket, n; 242bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 243bc0e7cf4SDavid Howells void *p; 244bc0e7cf4SDavid Howells 245bc0e7cf4SDavid Howells rcu_read_lock(); 246bc0e7cf4SDavid Howells 247bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 248bc0e7cf4SDavid Howells return NULL; 249bc0e7cf4SDavid Howells 250bc0e7cf4SDavid Howells n = *_pos & ((1U << shift) - 1); 251bc0e7cf4SDavid Howells bucket = *_pos >> shift; 252bc0e7cf4SDavid Howells for (;;) { 253bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 254bc0e7cf4SDavid Howells *_pos = UINT_MAX; 255bc0e7cf4SDavid Howells return NULL; 256bc0e7cf4SDavid Howells } 257bc0e7cf4SDavid Howells if (n == 0) { 258bc0e7cf4SDavid Howells if (bucket == 0) 259bc0e7cf4SDavid Howells return SEQ_START_TOKEN; 260bc0e7cf4SDavid Howells *_pos += 1; 261bc0e7cf4SDavid Howells n++; 262bc0e7cf4SDavid Howells } 263bc0e7cf4SDavid Howells 264bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 265bc0e7cf4SDavid Howells if (p) 266bc0e7cf4SDavid Howells return p; 267bc0e7cf4SDavid Howells bucket++; 268bc0e7cf4SDavid Howells n = 1; 269bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 270bc0e7cf4SDavid Howells } 271bc0e7cf4SDavid Howells } 272bc0e7cf4SDavid Howells 273bc0e7cf4SDavid Howells static void *rxrpc_peer_seq_next(struct seq_file *seq, void *v, loff_t *_pos) 274bc0e7cf4SDavid Howells { 275bc0e7cf4SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 276bc0e7cf4SDavid Howells unsigned int bucket, n; 277bc0e7cf4SDavid Howells unsigned int shift = 32 - HASH_BITS(rxnet->peer_hash); 278bc0e7cf4SDavid Howells void *p; 279bc0e7cf4SDavid Howells 280bc0e7cf4SDavid Howells if (*_pos >= UINT_MAX) 281bc0e7cf4SDavid Howells return NULL; 282bc0e7cf4SDavid Howells 283bc0e7cf4SDavid Howells bucket = *_pos >> shift; 284bc0e7cf4SDavid Howells 285bc0e7cf4SDavid Howells p = seq_hlist_next_rcu(v, &rxnet->peer_hash[bucket], _pos); 286bc0e7cf4SDavid Howells if (p) 287bc0e7cf4SDavid Howells return p; 288bc0e7cf4SDavid Howells 289bc0e7cf4SDavid Howells for (;;) { 290bc0e7cf4SDavid Howells bucket++; 291bc0e7cf4SDavid Howells n = 1; 292bc0e7cf4SDavid Howells *_pos = (bucket << shift) | n; 293bc0e7cf4SDavid Howells 294bc0e7cf4SDavid Howells if (bucket >= HASH_SIZE(rxnet->peer_hash)) { 295bc0e7cf4SDavid Howells *_pos = UINT_MAX; 296bc0e7cf4SDavid Howells return NULL; 297bc0e7cf4SDavid Howells } 298bc0e7cf4SDavid Howells if (n == 0) { 299bc0e7cf4SDavid Howells *_pos += 1; 300bc0e7cf4SDavid Howells n++; 301bc0e7cf4SDavid Howells } 302bc0e7cf4SDavid Howells 303bc0e7cf4SDavid Howells p = seq_hlist_start_rcu(&rxnet->peer_hash[bucket], n - 1); 304bc0e7cf4SDavid Howells if (p) 305bc0e7cf4SDavid Howells return p; 306bc0e7cf4SDavid Howells } 307bc0e7cf4SDavid Howells } 308bc0e7cf4SDavid Howells 309bc0e7cf4SDavid Howells static void rxrpc_peer_seq_stop(struct seq_file *seq, void *v) 310bc0e7cf4SDavid Howells __releases(rcu) 311bc0e7cf4SDavid Howells { 312bc0e7cf4SDavid Howells rcu_read_unlock(); 313bc0e7cf4SDavid Howells } 314bc0e7cf4SDavid Howells 315bc0e7cf4SDavid Howells 316bc0e7cf4SDavid Howells const struct seq_operations rxrpc_peer_seq_ops = { 317bc0e7cf4SDavid Howells .start = rxrpc_peer_seq_start, 318bc0e7cf4SDavid Howells .next = rxrpc_peer_seq_next, 319bc0e7cf4SDavid Howells .stop = rxrpc_peer_seq_stop, 320bc0e7cf4SDavid Howells .show = rxrpc_peer_seq_show, 321bc0e7cf4SDavid Howells }; 32233912c26SDavid Howells 32333912c26SDavid Howells /* 32433912c26SDavid Howells * Generate a list of extant virtual local endpoints in /proc/net/rxrpc/locals 32533912c26SDavid Howells */ 32633912c26SDavid Howells static int rxrpc_local_seq_show(struct seq_file *seq, void *v) 32733912c26SDavid Howells { 32833912c26SDavid Howells struct rxrpc_local *local; 32933912c26SDavid Howells char lbuff[50]; 33033912c26SDavid Howells 33133912c26SDavid Howells if (v == SEQ_START_TOKEN) { 33233912c26SDavid Howells seq_puts(seq, 33333912c26SDavid Howells "Proto Local " 334a275da62SDavid Howells " Use Act RxQ\n"); 33533912c26SDavid Howells return 0; 33633912c26SDavid Howells } 33733912c26SDavid Howells 33833912c26SDavid Howells local = hlist_entry(v, struct rxrpc_local, link); 33933912c26SDavid Howells 34033912c26SDavid Howells sprintf(lbuff, "%pISpc", &local->srx.transport); 34133912c26SDavid Howells 34233912c26SDavid Howells seq_printf(seq, 343a275da62SDavid Howells "UDP %-47.47s %3u %3u %3u\n", 34433912c26SDavid Howells lbuff, 345a0575429SDavid Howells refcount_read(&local->ref), 346a275da62SDavid Howells atomic_read(&local->active_users), 347a275da62SDavid Howells local->rx_queue.qlen); 34833912c26SDavid Howells 34933912c26SDavid Howells return 0; 35033912c26SDavid Howells } 35133912c26SDavid Howells 35233912c26SDavid Howells static void *rxrpc_local_seq_start(struct seq_file *seq, loff_t *_pos) 35333912c26SDavid Howells __acquires(rcu) 35433912c26SDavid Howells { 35533912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 35633912c26SDavid Howells unsigned int n; 35733912c26SDavid Howells 35833912c26SDavid Howells rcu_read_lock(); 35933912c26SDavid Howells 36033912c26SDavid Howells if (*_pos >= UINT_MAX) 36133912c26SDavid Howells return NULL; 36233912c26SDavid Howells 36333912c26SDavid Howells n = *_pos; 36433912c26SDavid Howells if (n == 0) 36533912c26SDavid Howells return SEQ_START_TOKEN; 36633912c26SDavid Howells 36733912c26SDavid Howells return seq_hlist_start_rcu(&rxnet->local_endpoints, n - 1); 36833912c26SDavid Howells } 36933912c26SDavid Howells 37033912c26SDavid Howells static void *rxrpc_local_seq_next(struct seq_file *seq, void *v, loff_t *_pos) 37133912c26SDavid Howells { 37233912c26SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 37333912c26SDavid Howells 37433912c26SDavid Howells if (*_pos >= UINT_MAX) 37533912c26SDavid Howells return NULL; 37633912c26SDavid Howells 37733912c26SDavid Howells return seq_hlist_next_rcu(v, &rxnet->local_endpoints, _pos); 37833912c26SDavid Howells } 37933912c26SDavid Howells 38033912c26SDavid Howells static void rxrpc_local_seq_stop(struct seq_file *seq, void *v) 38133912c26SDavid Howells __releases(rcu) 38233912c26SDavid Howells { 38333912c26SDavid Howells rcu_read_unlock(); 38433912c26SDavid Howells } 38533912c26SDavid Howells 38633912c26SDavid Howells const struct seq_operations rxrpc_local_seq_ops = { 38733912c26SDavid Howells .start = rxrpc_local_seq_start, 38833912c26SDavid Howells .next = rxrpc_local_seq_next, 38933912c26SDavid Howells .stop = rxrpc_local_seq_stop, 39033912c26SDavid Howells .show = rxrpc_local_seq_show, 39133912c26SDavid Howells }; 392b0154246SDavid Howells 393b0154246SDavid Howells /* 394b0154246SDavid Howells * Display stats in /proc/net/rxrpc/stats 395b0154246SDavid Howells */ 396b0154246SDavid Howells int rxrpc_stats_show(struct seq_file *seq, void *v) 397b0154246SDavid Howells { 398b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(seq)); 399b0154246SDavid Howells 400b0154246SDavid Howells seq_printf(seq, 401b0154246SDavid Howells "Data : send=%u sendf=%u\n", 402b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data_send), 403b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data_send_frag)); 404b0154246SDavid Howells seq_printf(seq, 405b0154246SDavid Howells "Data-Tx : nr=%u retrans=%u\n", 406b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data), 407b0154246SDavid Howells atomic_read(&rxnet->stat_tx_data_retrans)); 408b0154246SDavid Howells seq_printf(seq, 409b0154246SDavid Howells "Data-Rx : nr=%u reqack=%u jumbo=%u\n", 410b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data), 411b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data_reqack), 412b0154246SDavid Howells atomic_read(&rxnet->stat_rx_data_jumbo)); 413b0154246SDavid Howells seq_printf(seq, 414f2a676d1SDavid Howells "Ack : fill=%u send=%u skip=%u\n", 415f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_fill), 416f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_send), 417f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_ack_skip)); 418f2a676d1SDavid Howells seq_printf(seq, 419f2a676d1SDavid Howells "Ack-Tx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n", 420f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_REQUESTED]), 421f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DUPLICATE]), 422f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]), 423f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_EXCEEDS_WINDOW]), 424f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_NOSPACE]), 425f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING]), 426f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_PING_RESPONSE]), 427f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_DELAY]), 428f2a676d1SDavid Howells atomic_read(&rxnet->stat_tx_acks[RXRPC_ACK_IDLE])); 429f2a676d1SDavid Howells seq_printf(seq, 430f2a676d1SDavid Howells "Ack-Rx : req=%u dup=%u oos=%u exw=%u nos=%u png=%u prs=%u dly=%u idl=%u\n", 431f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_REQUESTED]), 432f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DUPLICATE]), 433f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_OUT_OF_SEQUENCE]), 434f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_EXCEEDS_WINDOW]), 435f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_NOSPACE]), 436f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING]), 437f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_PING_RESPONSE]), 438f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_DELAY]), 439f2a676d1SDavid Howells atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_IDLE])); 440f2a676d1SDavid Howells seq_printf(seq, 441f7fa5242SDavid Howells "Why-Req-A: acklost=%u already=%u mrtt=%u ortt=%u\n", 442f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_ack_lost]), 443f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_already_on]), 444f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_more_rtt]), 445f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_old_rtt])); 446f7fa5242SDavid Howells seq_printf(seq, 447f7fa5242SDavid Howells "Why-Req-A: nolast=%u retx=%u slows=%u smtxw=%u\n", 448f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_no_srv_last]), 449f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_retrans]), 450f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_slow_start]), 451f7fa5242SDavid Howells atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_small_txwin])); 452f7fa5242SDavid Howells seq_printf(seq, 453a4ea4c47SDavid Howells "Buffers : txb=%u rxb=%u\n", 45402a19356SDavid Howells atomic_read(&rxrpc_nr_txbuf), 455b0154246SDavid Howells atomic_read(&rxrpc_n_rx_skbs)); 456a275da62SDavid Howells seq_printf(seq, 457a275da62SDavid Howells "IO-thread: loops=%u\n", 458a275da62SDavid Howells atomic_read(&rxnet->stat_io_loop)); 459b0154246SDavid Howells return 0; 460b0154246SDavid Howells } 461b0154246SDavid Howells 462b0154246SDavid Howells /* 463b0154246SDavid Howells * Clear stats if /proc/net/rxrpc/stats is written to. 464b0154246SDavid Howells */ 465b0154246SDavid Howells int rxrpc_stats_clear(struct file *file, char *buf, size_t size) 466b0154246SDavid Howells { 467b0154246SDavid Howells struct seq_file *m = file->private_data; 468b0154246SDavid Howells struct rxrpc_net *rxnet = rxrpc_net(seq_file_single_net(m)); 469b0154246SDavid Howells 470b0154246SDavid Howells if (size > 1 || (size == 1 && buf[0] != '\n')) 471b0154246SDavid Howells return -EINVAL; 472b0154246SDavid Howells 473b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data, 0); 474b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_retrans, 0); 475b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send, 0); 476b0154246SDavid Howells atomic_set(&rxnet->stat_tx_data_send_frag, 0); 477b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data, 0); 478b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_reqack, 0); 479b0154246SDavid Howells atomic_set(&rxnet->stat_rx_data_jumbo, 0); 480f2a676d1SDavid Howells 481f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_fill, 0); 482f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_send, 0); 483f2a676d1SDavid Howells atomic_set(&rxnet->stat_tx_ack_skip, 0); 484f2a676d1SDavid Howells memset(&rxnet->stat_tx_acks, 0, sizeof(rxnet->stat_tx_acks)); 485f2a676d1SDavid Howells memset(&rxnet->stat_rx_acks, 0, sizeof(rxnet->stat_rx_acks)); 486f7fa5242SDavid Howells 487f7fa5242SDavid Howells memset(&rxnet->stat_why_req_ack, 0, sizeof(rxnet->stat_why_req_ack)); 488a275da62SDavid Howells 489a275da62SDavid Howells atomic_set(&rxnet->stat_io_loop, 0); 490b0154246SDavid Howells return size; 491b0154246SDavid Howells } 492