Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
17static 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 */
31static 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
38static 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
43static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
44{
45 read_unlock(&rxrpc_call_lock);
46 rcu_read_unlock();
47}
48
49static 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
107static 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
114static int rxrpc_call_seq_open(struct inode *inode, struct file *file)
115{
116 return seq_open(file, &rxrpc_call_seq_ops);
117}
118
119const 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 */
130static 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
136static 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
142static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
143{
144 read_unlock(&rxrpc_connection_lock);
145}
146
147static 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);
172print:
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
190static 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
198static int rxrpc_connection_seq_open(struct inode *inode, struct file *file)
199{
200 return seq_open(file, &rxrpc_connection_seq_ops);
201}
202
203const 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};