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};