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[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1]; 56 57 if (v == &rxrpc_calls) { 58 seq_puts(seq, 59 "Proto Local Remote " 60 " SvID ConnID CallID End Use State Abort " 61 " UserID\n"); 62 return 0; 63 } 64 65 call = list_entry(v, struct rxrpc_call, link); 66 67 rx = rcu_dereference(call->socket); 68 if (rx) { 69 local = READ_ONCE(rx->local); 70 if (local) 71 sprintf(lbuff, "%pI4:%u", 72 &local->srx.transport.sin.sin_addr, 73 ntohs(local->srx.transport.sin.sin_port)); 74 else 75 strcpy(lbuff, "no_local"); 76 } else { 77 strcpy(lbuff, "no_socket"); 78 } 79 80 peer = call->peer; 81 if (peer) 82 sprintf(rbuff, "%pI4:%u", 83 &peer->srx.transport.sin.sin_addr, 84 ntohs(peer->srx.transport.sin.sin_port)); 85 else 86 strcpy(rbuff, "no_connection"); 87 88 seq_printf(seq, 89 "UDP %-22.22s %-22.22s %4x %08x %08x %s %3u" 90 " %-8.8s %08x %lx\n", 91 lbuff, 92 rbuff, 93 call->service_id, 94 call->cid, 95 call->call_id, 96 rxrpc_is_service_call(call) ? "Svc" : "Clt", 97 atomic_read(&call->usage), 98 rxrpc_call_states[call->state], 99 call->abort_code, 100 call->user_call_ID); 101 102 return 0; 103 } 104 105 static const struct seq_operations rxrpc_call_seq_ops = { 106 .start = rxrpc_call_seq_start, 107 .next = rxrpc_call_seq_next, 108 .stop = rxrpc_call_seq_stop, 109 .show = rxrpc_call_seq_show, 110 }; 111 112 static int rxrpc_call_seq_open(struct inode *inode, struct file *file) 113 { 114 return seq_open(file, &rxrpc_call_seq_ops); 115 } 116 117 const struct file_operations rxrpc_call_seq_fops = { 118 .owner = THIS_MODULE, 119 .open = rxrpc_call_seq_open, 120 .read = seq_read, 121 .llseek = seq_lseek, 122 .release = seq_release, 123 }; 124 125 /* 126 * generate a list of extant virtual connections in /proc/net/rxrpc_conns 127 */ 128 static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) 129 { 130 read_lock(&rxrpc_connection_lock); 131 return seq_list_start_head(&rxrpc_connection_proc_list, *_pos); 132 } 133 134 static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, 135 loff_t *pos) 136 { 137 return seq_list_next(v, &rxrpc_connection_proc_list, pos); 138 } 139 140 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) 141 { 142 read_unlock(&rxrpc_connection_lock); 143 } 144 145 static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) 146 { 147 struct rxrpc_connection *conn; 148 char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1]; 149 150 if (v == &rxrpc_connection_proc_list) { 151 seq_puts(seq, 152 "Proto Local Remote " 153 " SvID ConnID End Use State Key " 154 " Serial ISerial\n" 155 ); 156 return 0; 157 } 158 159 conn = list_entry(v, struct rxrpc_connection, proc_link); 160 if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { 161 strcpy(lbuff, "no_local"); 162 strcpy(rbuff, "no_connection"); 163 goto print; 164 } 165 166 sprintf(lbuff, "%pI4:%u", 167 &conn->params.local->srx.transport.sin.sin_addr, 168 ntohs(conn->params.local->srx.transport.sin.sin_port)); 169 170 sprintf(rbuff, "%pI4:%u", 171 &conn->params.peer->srx.transport.sin.sin_addr, 172 ntohs(conn->params.peer->srx.transport.sin.sin_port)); 173 print: 174 seq_printf(seq, 175 "UDP %-22.22s %-22.22s %4x %08x %s %3u" 176 " %s %08x %08x %08x\n", 177 lbuff, 178 rbuff, 179 conn->params.service_id, 180 conn->proto.cid, 181 rxrpc_conn_is_service(conn) ? "Svc" : "Clt", 182 atomic_read(&conn->usage), 183 rxrpc_conn_states[conn->state], 184 key_serial(conn->params.key), 185 atomic_read(&conn->serial), 186 conn->hi_serial); 187 188 return 0; 189 } 190 191 static const struct seq_operations rxrpc_connection_seq_ops = { 192 .start = rxrpc_connection_seq_start, 193 .next = rxrpc_connection_seq_next, 194 .stop = rxrpc_connection_seq_stop, 195 .show = rxrpc_connection_seq_show, 196 }; 197 198 199 static int rxrpc_connection_seq_open(struct inode *inode, struct file *file) 200 { 201 return seq_open(file, &rxrpc_connection_seq_ops); 202 } 203 204 const struct file_operations rxrpc_connection_seq_fops = { 205 .owner = THIS_MODULE, 206 .open = rxrpc_connection_seq_open, 207 .read = seq_read, 208 .llseek = seq_lseek, 209 .release = seq_release, 210 }; 211