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 { 33 rcu_read_lock(); 34 read_lock(&rxrpc_call_lock); 35 return seq_list_start_head(&rxrpc_calls, *_pos); 36 } 37 38 static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos) 39 { 40 return seq_list_next(v, &rxrpc_calls, pos); 41 } 42 43 static void rxrpc_call_seq_stop(struct seq_file *seq, void *v) 44 { 45 read_unlock(&rxrpc_call_lock); 46 rcu_read_unlock(); 47 } 48 49 static int rxrpc_call_seq_show(struct seq_file *seq, void *v) 50 { 51 struct rxrpc_local *local; 52 struct rxrpc_sock *rx; 53 struct rxrpc_peer *peer; 54 struct rxrpc_call *call; 55 char lbuff[50], rbuff[50]; 56 57 if (v == &rxrpc_calls) { 58 seq_puts(seq, 59 "Proto Local " 60 " Remote " 61 " SvID ConnID CallID End Use State Abort " 62 " UserID\n"); 63 return 0; 64 } 65 66 call = list_entry(v, struct rxrpc_call, link); 67 68 rx = rcu_dereference(call->socket); 69 if (rx) { 70 local = READ_ONCE(rx->local); 71 if (local) 72 sprintf(lbuff, "%pISpc", &local->srx.transport); 73 else 74 strcpy(lbuff, "no_local"); 75 } else { 76 strcpy(lbuff, "no_socket"); 77 } 78 79 peer = call->peer; 80 if (peer) 81 sprintf(rbuff, "%pISpc", &peer->srx.transport); 82 else 83 strcpy(rbuff, "no_connection"); 84 85 seq_printf(seq, 86 "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u" 87 " %-8.8s %08x %lx\n", 88 lbuff, 89 rbuff, 90 call->service_id, 91 call->cid, 92 call->call_id, 93 rxrpc_is_service_call(call) ? "Svc" : "Clt", 94 atomic_read(&call->usage), 95 rxrpc_call_states[call->state], 96 call->abort_code, 97 call->user_call_ID); 98 99 return 0; 100 } 101 102 static const struct seq_operations rxrpc_call_seq_ops = { 103 .start = rxrpc_call_seq_start, 104 .next = rxrpc_call_seq_next, 105 .stop = rxrpc_call_seq_stop, 106 .show = rxrpc_call_seq_show, 107 }; 108 109 static int rxrpc_call_seq_open(struct inode *inode, struct file *file) 110 { 111 return seq_open(file, &rxrpc_call_seq_ops); 112 } 113 114 const struct file_operations rxrpc_call_seq_fops = { 115 .owner = THIS_MODULE, 116 .open = rxrpc_call_seq_open, 117 .read = seq_read, 118 .llseek = seq_lseek, 119 .release = seq_release, 120 }; 121 122 /* 123 * generate a list of extant virtual connections in /proc/net/rxrpc_conns 124 */ 125 static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) 126 { 127 read_lock(&rxrpc_connection_lock); 128 return seq_list_start_head(&rxrpc_connection_proc_list, *_pos); 129 } 130 131 static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, 132 loff_t *pos) 133 { 134 return seq_list_next(v, &rxrpc_connection_proc_list, pos); 135 } 136 137 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) 138 { 139 read_unlock(&rxrpc_connection_lock); 140 } 141 142 static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) 143 { 144 struct rxrpc_connection *conn; 145 char lbuff[50], rbuff[50]; 146 147 if (v == &rxrpc_connection_proc_list) { 148 seq_puts(seq, 149 "Proto Local " 150 " Remote " 151 " SvID ConnID End Use State Key " 152 " Serial ISerial\n" 153 ); 154 return 0; 155 } 156 157 conn = list_entry(v, struct rxrpc_connection, proc_link); 158 if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { 159 strcpy(lbuff, "no_local"); 160 strcpy(rbuff, "no_connection"); 161 goto print; 162 } 163 164 sprintf(lbuff, "%pISpc", &conn->params.local->srx.transport); 165 166 sprintf(rbuff, "%pISpc", &conn->params.peer->srx.transport); 167 print: 168 seq_printf(seq, 169 "UDP %-47.47s %-47.47s %4x %08x %s %3u" 170 " %s %08x %08x %08x\n", 171 lbuff, 172 rbuff, 173 conn->params.service_id, 174 conn->proto.cid, 175 rxrpc_conn_is_service(conn) ? "Svc" : "Clt", 176 atomic_read(&conn->usage), 177 rxrpc_conn_states[conn->state], 178 key_serial(conn->params.key), 179 atomic_read(&conn->serial), 180 conn->hi_serial); 181 182 return 0; 183 } 184 185 static const struct seq_operations rxrpc_connection_seq_ops = { 186 .start = rxrpc_connection_seq_start, 187 .next = rxrpc_connection_seq_next, 188 .stop = rxrpc_connection_seq_stop, 189 .show = rxrpc_connection_seq_show, 190 }; 191 192 193 static int rxrpc_connection_seq_open(struct inode *inode, struct file *file) 194 { 195 return seq_open(file, &rxrpc_connection_seq_ops); 196 } 197 198 const struct file_operations rxrpc_connection_seq_fops = { 199 .owner = THIS_MODULE, 200 .open = rxrpc_connection_seq_open, 201 .read = seq_read, 202 .llseek = seq_lseek, 203 .release = seq_release, 204 }; 205