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 rxrpc_seq_t tx_hard_ack, rx_hard_ack; 56 char lbuff[50], rbuff[50]; 57 58 if (v == &rxrpc_calls) { 59 seq_puts(seq, 60 "Proto Local " 61 " Remote " 62 " SvID ConnID CallID End Use State Abort " 63 " UserID\n"); 64 return 0; 65 } 66 67 call = list_entry(v, struct rxrpc_call, link); 68 69 rx = rcu_dereference(call->socket); 70 if (rx) { 71 local = READ_ONCE(rx->local); 72 if (local) 73 sprintf(lbuff, "%pISpc", &local->srx.transport); 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, "%pISpc", &peer->srx.transport); 83 else 84 strcpy(rbuff, "no_connection"); 85 86 tx_hard_ack = READ_ONCE(call->tx_hard_ack); 87 rx_hard_ack = READ_ONCE(call->rx_hard_ack); 88 seq_printf(seq, 89 "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u" 90 " %-8.8s %08x %lx %08x %02x %08x %02x\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 tx_hard_ack, READ_ONCE(call->tx_top) - tx_hard_ack, 102 rx_hard_ack, READ_ONCE(call->rx_top) - rx_hard_ack); 103 104 return 0; 105 } 106 107 static const struct seq_operations rxrpc_call_seq_ops = { 108 .start = rxrpc_call_seq_start, 109 .next = rxrpc_call_seq_next, 110 .stop = rxrpc_call_seq_stop, 111 .show = rxrpc_call_seq_show, 112 }; 113 114 static int rxrpc_call_seq_open(struct inode *inode, struct file *file) 115 { 116 return seq_open(file, &rxrpc_call_seq_ops); 117 } 118 119 const struct file_operations rxrpc_call_seq_fops = { 120 .owner = THIS_MODULE, 121 .open = rxrpc_call_seq_open, 122 .read = seq_read, 123 .llseek = seq_lseek, 124 .release = seq_release, 125 }; 126 127 /* 128 * generate a list of extant virtual connections in /proc/net/rxrpc_conns 129 */ 130 static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) 131 { 132 read_lock(&rxrpc_connection_lock); 133 return seq_list_start_head(&rxrpc_connection_proc_list, *_pos); 134 } 135 136 static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, 137 loff_t *pos) 138 { 139 return seq_list_next(v, &rxrpc_connection_proc_list, pos); 140 } 141 142 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) 143 { 144 read_unlock(&rxrpc_connection_lock); 145 } 146 147 static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) 148 { 149 struct rxrpc_connection *conn; 150 char lbuff[50], rbuff[50]; 151 152 if (v == &rxrpc_connection_proc_list) { 153 seq_puts(seq, 154 "Proto Local " 155 " Remote " 156 " SvID ConnID End Use State Key " 157 " Serial ISerial\n" 158 ); 159 return 0; 160 } 161 162 conn = list_entry(v, struct rxrpc_connection, proc_link); 163 if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { 164 strcpy(lbuff, "no_local"); 165 strcpy(rbuff, "no_connection"); 166 goto print; 167 } 168 169 sprintf(lbuff, "%pISpc", &conn->params.local->srx.transport); 170 171 sprintf(rbuff, "%pISpc", &conn->params.peer->srx.transport); 172 print: 173 seq_printf(seq, 174 "UDP %-47.47s %-47.47s %4x %08x %s %3u" 175 " %s %08x %08x %08x\n", 176 lbuff, 177 rbuff, 178 conn->params.service_id, 179 conn->proto.cid, 180 rxrpc_conn_is_service(conn) ? "Svc" : "Clt", 181 atomic_read(&conn->usage), 182 rxrpc_conn_states[conn->state], 183 key_serial(conn->params.key), 184 atomic_read(&conn->serial), 185 conn->hi_serial); 186 187 return 0; 188 } 189 190 static const struct seq_operations rxrpc_connection_seq_ops = { 191 .start = rxrpc_connection_seq_start, 192 .next = rxrpc_connection_seq_next, 193 .stop = rxrpc_connection_seq_stop, 194 .show = rxrpc_connection_seq_show, 195 }; 196 197 198 static int rxrpc_connection_seq_open(struct inode *inode, struct file *file) 199 { 200 return seq_open(file, &rxrpc_connection_seq_ops); 201 } 202 203 const struct file_operations rxrpc_connection_seq_fops = { 204 .owner = THIS_MODULE, 205 .open = rxrpc_connection_seq_open, 206 .read = seq_read, 207 .llseek = seq_lseek, 208 .release = seq_release, 209 }; 210