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[] = {
18	[RXRPC_CONN_UNUSED]		= "Unused  ",
19	[RXRPC_CONN_CLIENT]		= "Client  ",
20	[RXRPC_CONN_SERVER_UNSECURED]	= "SvUnsec ",
21	[RXRPC_CONN_SERVER_CHALLENGING]	= "SvChall ",
22	[RXRPC_CONN_SERVER]		= "SvSecure",
23	[RXRPC_CONN_REMOTELY_ABORTED]	= "RmtAbort",
24	[RXRPC_CONN_LOCALLY_ABORTED]	= "LocAbort",
25	[RXRPC_CONN_NETWORK_ERROR]	= "NetError",
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	read_lock(&rxrpc_call_lock);
34	return seq_list_start_head(&rxrpc_calls, *_pos);
35}
36
37static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
38{
39	return seq_list_next(v, &rxrpc_calls, pos);
40}
41
42static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
43{
44	read_unlock(&rxrpc_call_lock);
45}
46
47static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
48{
49	struct rxrpc_transport *trans;
50	struct rxrpc_call *call;
51	char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
52
53	if (v == &rxrpc_calls) {
54		seq_puts(seq,
55			 "Proto Local                  Remote                "
56			 " SvID ConnID   CallID   End Use State    Abort   "
57			 " UserID\n");
58		return 0;
59	}
60
61	call = list_entry(v, struct rxrpc_call, link);
62	trans = call->conn->trans;
63
64	sprintf(lbuff, "%pI4:%u",
65		&trans->local->srx.transport.sin.sin_addr,
66		ntohs(trans->local->srx.transport.sin.sin_port));
67
68	sprintf(rbuff, "%pI4:%u",
69		&trans->peer->srx.transport.sin.sin_addr,
70		ntohs(trans->peer->srx.transport.sin.sin_port));
71
72	seq_printf(seq,
73		   "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
74		   " %-8.8s %08x %lx\n",
75		   lbuff,
76		   rbuff,
77		   ntohs(call->conn->service_id),
78		   ntohl(call->conn->cid),
79		   ntohl(call->call_id),
80		   call->conn->in_clientflag ? "Svc" : "Clt",
81		   atomic_read(&call->usage),
82		   rxrpc_call_states[call->state],
83		   call->abort_code,
84		   call->user_call_ID);
85
86	return 0;
87}
88
89static const struct seq_operations rxrpc_call_seq_ops = {
90	.start  = rxrpc_call_seq_start,
91	.next   = rxrpc_call_seq_next,
92	.stop   = rxrpc_call_seq_stop,
93	.show   = rxrpc_call_seq_show,
94};
95
96static int rxrpc_call_seq_open(struct inode *inode, struct file *file)
97{
98	return seq_open(file, &rxrpc_call_seq_ops);
99}
100
101const struct file_operations rxrpc_call_seq_fops = {
102	.owner		= THIS_MODULE,
103	.open		= rxrpc_call_seq_open,
104	.read		= seq_read,
105	.llseek		= seq_lseek,
106	.release	= seq_release,
107};
108
109/*
110 * generate a list of extant virtual connections in /proc/net/rxrpc_conns
111 */
112static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
113{
114	read_lock(&rxrpc_connection_lock);
115	return seq_list_start_head(&rxrpc_connections, *_pos);
116}
117
118static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
119				       loff_t *pos)
120{
121	return seq_list_next(v, &rxrpc_connections, pos);
122}
123
124static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
125{
126	read_unlock(&rxrpc_connection_lock);
127}
128
129static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
130{
131	struct rxrpc_connection *conn;
132	struct rxrpc_transport *trans;
133	char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
134
135	if (v == &rxrpc_connections) {
136		seq_puts(seq,
137			 "Proto Local                  Remote                "
138			 " SvID ConnID   Calls    End Use State    Key     "
139			 " Serial   ISerial\n"
140			 );
141		return 0;
142	}
143
144	conn = list_entry(v, struct rxrpc_connection, link);
145	trans = conn->trans;
146
147	sprintf(lbuff, "%pI4:%u",
148		&trans->local->srx.transport.sin.sin_addr,
149		ntohs(trans->local->srx.transport.sin.sin_port));
150
151	sprintf(rbuff, "%pI4:%u",
152		&trans->peer->srx.transport.sin.sin_addr,
153		ntohs(trans->peer->srx.transport.sin.sin_port));
154
155	seq_printf(seq,
156		   "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
157		   " %s %08x %08x %08x\n",
158		   lbuff,
159		   rbuff,
160		   ntohs(conn->service_id),
161		   ntohl(conn->cid),
162		   conn->call_counter,
163		   conn->in_clientflag ? "Svc" : "Clt",
164		   atomic_read(&conn->usage),
165		   rxrpc_conn_states[conn->state],
166		   key_serial(conn->key),
167		   atomic_read(&conn->serial),
168		   atomic_read(&conn->hi_serial));
169
170	return 0;
171}
172
173static const struct seq_operations rxrpc_connection_seq_ops = {
174	.start  = rxrpc_connection_seq_start,
175	.next   = rxrpc_connection_seq_next,
176	.stop   = rxrpc_connection_seq_stop,
177	.show   = rxrpc_connection_seq_show,
178};
179
180
181static int rxrpc_connection_seq_open(struct inode *inode, struct file *file)
182{
183	return seq_open(file, &rxrpc_connection_seq_ops);
184}
185
186const struct file_operations rxrpc_connection_seq_fops = {
187	.owner		= THIS_MODULE,
188	.open		= rxrpc_connection_seq_open,
189	.read		= seq_read,
190	.llseek		= seq_lseek,
191	.release	= seq_release,
192};
193