1 /* /proc/net/ support for AF_RXRPC 2 * 3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 12 #include <linux/module.h> 13 #include <net/sock.h> 14 #include <net/af_rxrpc.h> 15 #include "ar-internal.h" 16 17 static const char *const rxrpc_conn_states[RXRPC_CONN__NR_STATES] = { 18 [RXRPC_CONN_UNUSED] = "Unused ", 19 [RXRPC_CONN_CLIENT] = "Client ", 20 [RXRPC_CONN_SERVICE_PREALLOC] = "SvPrealc", 21 [RXRPC_CONN_SERVICE_UNSECURED] = "SvUnsec ", 22 [RXRPC_CONN_SERVICE_CHALLENGING] = "SvChall ", 23 [RXRPC_CONN_SERVICE] = "SvSecure", 24 [RXRPC_CONN_REMOTELY_ABORTED] = "RmtAbort", 25 [RXRPC_CONN_LOCALLY_ABORTED] = "LocAbort", 26 }; 27 28 /* 29 * generate a list of extant and dead calls in /proc/net/rxrpc_calls 30 */ 31 static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos) 32 __acquires(rcu) 33 __acquires(rxnet->call_lock) 34 { 35 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 36 37 rcu_read_lock(); 38 read_lock(&rxnet->call_lock); 39 return seq_list_start_head(&rxnet->calls, *_pos); 40 } 41 42 static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos) 43 { 44 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 45 46 return seq_list_next(v, &rxnet->calls, pos); 47 } 48 49 static void rxrpc_call_seq_stop(struct seq_file *seq, void *v) 50 __releases(rxnet->call_lock) 51 __releases(rcu) 52 { 53 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 54 55 read_unlock(&rxnet->call_lock); 56 rcu_read_unlock(); 57 } 58 59 static int rxrpc_call_seq_show(struct seq_file *seq, void *v) 60 { 61 struct rxrpc_local *local; 62 struct rxrpc_sock *rx; 63 struct rxrpc_peer *peer; 64 struct rxrpc_call *call; 65 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 66 rxrpc_seq_t tx_hard_ack, rx_hard_ack; 67 char lbuff[50], rbuff[50]; 68 69 if (v == &rxnet->calls) { 70 seq_puts(seq, 71 "Proto Local " 72 " Remote " 73 " SvID ConnID CallID End Use State Abort " 74 " UserID\n"); 75 return 0; 76 } 77 78 call = list_entry(v, struct rxrpc_call, link); 79 80 rx = rcu_dereference(call->socket); 81 if (rx) { 82 local = READ_ONCE(rx->local); 83 if (local) 84 sprintf(lbuff, "%pISpc", &local->srx.transport); 85 else 86 strcpy(lbuff, "no_local"); 87 } else { 88 strcpy(lbuff, "no_socket"); 89 } 90 91 peer = call->peer; 92 if (peer) 93 sprintf(rbuff, "%pISpc", &peer->srx.transport); 94 else 95 strcpy(rbuff, "no_connection"); 96 97 tx_hard_ack = READ_ONCE(call->tx_hard_ack); 98 rx_hard_ack = READ_ONCE(call->rx_hard_ack); 99 seq_printf(seq, 100 "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u" 101 " %-8.8s %08x %lx %08x %02x %08x %02x\n", 102 lbuff, 103 rbuff, 104 call->service_id, 105 call->cid, 106 call->call_id, 107 rxrpc_is_service_call(call) ? "Svc" : "Clt", 108 atomic_read(&call->usage), 109 rxrpc_call_states[call->state], 110 call->abort_code, 111 call->user_call_ID, 112 tx_hard_ack, READ_ONCE(call->tx_top) - tx_hard_ack, 113 rx_hard_ack, READ_ONCE(call->rx_top) - rx_hard_ack); 114 115 return 0; 116 } 117 118 static const struct seq_operations rxrpc_call_seq_ops = { 119 .start = rxrpc_call_seq_start, 120 .next = rxrpc_call_seq_next, 121 .stop = rxrpc_call_seq_stop, 122 .show = rxrpc_call_seq_show, 123 }; 124 125 static int rxrpc_call_seq_open(struct inode *inode, struct file *file) 126 { 127 return seq_open_net(inode, file, &rxrpc_call_seq_ops, 128 sizeof(struct seq_net_private)); 129 } 130 131 const struct file_operations rxrpc_call_seq_fops = { 132 .open = rxrpc_call_seq_open, 133 .read = seq_read, 134 .llseek = seq_lseek, 135 .release = seq_release, 136 }; 137 138 /* 139 * generate a list of extant virtual connections in /proc/net/rxrpc_conns 140 */ 141 static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) 142 __acquires(rxnet->conn_lock) 143 { 144 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 145 146 read_lock(&rxnet->conn_lock); 147 return seq_list_start_head(&rxnet->conn_proc_list, *_pos); 148 } 149 150 static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, 151 loff_t *pos) 152 { 153 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 154 155 return seq_list_next(v, &rxnet->conn_proc_list, pos); 156 } 157 158 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) 159 __releases(rxnet->conn_lock) 160 { 161 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 162 163 read_unlock(&rxnet->conn_lock); 164 } 165 166 static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) 167 { 168 struct rxrpc_connection *conn; 169 struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); 170 char lbuff[50], rbuff[50]; 171 172 if (v == &rxnet->conn_proc_list) { 173 seq_puts(seq, 174 "Proto Local " 175 " Remote " 176 " SvID ConnID End Use State Key " 177 " Serial ISerial\n" 178 ); 179 return 0; 180 } 181 182 conn = list_entry(v, struct rxrpc_connection, proc_link); 183 if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { 184 strcpy(lbuff, "no_local"); 185 strcpy(rbuff, "no_connection"); 186 goto print; 187 } 188 189 sprintf(lbuff, "%pISpc", &conn->params.local->srx.transport); 190 191 sprintf(rbuff, "%pISpc", &conn->params.peer->srx.transport); 192 print: 193 seq_printf(seq, 194 "UDP %-47.47s %-47.47s %4x %08x %s %3u" 195 " %s %08x %08x %08x\n", 196 lbuff, 197 rbuff, 198 conn->service_id, 199 conn->proto.cid, 200 rxrpc_conn_is_service(conn) ? "Svc" : "Clt", 201 atomic_read(&conn->usage), 202 rxrpc_conn_states[conn->state], 203 key_serial(conn->params.key), 204 atomic_read(&conn->serial), 205 conn->hi_serial); 206 207 return 0; 208 } 209 210 static const struct seq_operations rxrpc_connection_seq_ops = { 211 .start = rxrpc_connection_seq_start, 212 .next = rxrpc_connection_seq_next, 213 .stop = rxrpc_connection_seq_stop, 214 .show = rxrpc_connection_seq_show, 215 }; 216 217 218 static int rxrpc_connection_seq_open(struct inode *inode, struct file *file) 219 { 220 return seq_open_net(inode, file, &rxrpc_connection_seq_ops, 221 sizeof(struct seq_net_private)); 222 } 223 224 const struct file_operations rxrpc_connection_seq_fops = { 225 .open = rxrpc_connection_seq_open, 226 .read = seq_read, 227 .llseek = seq_lseek, 228 .release = seq_release, 229 }; 230