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 */
rxrpc_call_seq_start(struct seq_file * seq,loff_t * _pos)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
rxrpc_call_seq_next(struct seq_file * seq,void * v,loff_t * pos)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
rxrpc_call_seq_stop(struct seq_file * seq,void * v)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
rxrpc_call_seq_show(struct seq_file * seq,void * v)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
rxrpc_call_seq_open(struct inode * inode,struct file * file)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 */
rxrpc_connection_seq_start(struct seq_file * seq,loff_t * _pos)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
rxrpc_connection_seq_next(struct seq_file * seq,void * v,loff_t * pos)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
rxrpc_connection_seq_stop(struct seq_file * seq,void * v)137 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
138 {
139 read_unlock(&rxrpc_connection_lock);
140 }
141
rxrpc_connection_seq_show(struct seq_file * seq,void * v)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
rxrpc_connection_seq_open(struct inode * inode,struct file * file)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