/* proc.c: /proc interface for RxRPC
*
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <rxrpc/rxrpc.h>
#include <rxrpc/transport.h>
#include <rxrpc/peer.h>
#include <rxrpc/connection.h>
#include <rxrpc/call.h>
#include <rxrpc/message.h>
#include "internal.h"
static struct proc_dir_entry *proc_rxrpc;
static int rxrpc_proc_transports_open(struct inode *inode, struct file *file);
static void *rxrpc_proc_transports_start(struct seq_file *p, loff_t *pos);
static void *rxrpc_proc_transports_next(struct seq_file *p, void *v, loff_t *pos);
static void rxrpc_proc_transports_stop(struct seq_file *p, void *v);
static int rxrpc_proc_transports_show(struct seq_file *m, void *v);
static struct seq_operations rxrpc_proc_transports_ops = {
.start = rxrpc_proc_transports_start,
.next = rxrpc_proc_transports_next,
.stop = rxrpc_proc_transports_stop,
.show = rxrpc_proc_transports_show,
};
static const struct file_operations rxrpc_proc_transports_fops = {
.open = rxrpc_proc_transports_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static int rxrpc_proc_peers_open(struct inode *inode, struct file *file);
static void *rxrpc_proc_peers_start(struct seq_file *p, loff_t *pos);
static void *rxrpc_proc_peers_next(struct seq_file *p, void *v, loff_t *pos);
static void rxrpc_proc_peers_stop(struct seq_file *p, void *v);
static int rxrpc_proc_peers_show(struct seq_file *m, void *v);
static struct seq_operations rxrpc_proc_peers_ops = {
.start = rxrpc_proc_peers_start,
.next = rxrpc_proc_peers_next,
.stop = rxrpc_proc_peers_stop,
.show = rxrpc_proc_peers_show,
};
static const struct file_operations rxrpc_proc_peers_fops = {
.open = rxrpc_proc_peers_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static int rxrpc_proc_conns_open(struct inode *inode, struct file *file);
static void *rxrpc_proc_conns_start(struct seq_file *p, loff_t *pos);
static void *rxrpc_proc_conns_next(struct seq_file *p, void *v, loff_t *pos);
static void rxrpc_proc_conns_stop(struct seq_file *p, void *v);
static int rxrpc_proc_conns_show(struct seq_file *m, void *v);
static struct seq_operations rxrpc_proc_conns_ops = {
.start = rxrpc_proc_conns_start,
.next = rxrpc_proc_conns_next,
.stop = rxrpc_proc_conns_stop,
.show = rxrpc_proc_conns_show,
};
static const struct file_operations rxrpc_proc_conns_fops = {
.open = rxrpc_proc_conns_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static int rxrpc_proc_calls_open(struct inode *inode, struct file *file);
static void *rxrpc_proc_calls_start(struct seq_file *p, loff_t *pos);
static void *rxrpc_proc_calls_next(struct seq_file *p, void *v, loff_t *pos);
static void rxrpc_proc_calls_stop(struct seq_file *p, void *v);
static int rxrpc_proc_calls_show(struct seq_file *m, void *v);
static struct seq_operations rxrpc_proc_calls_ops = {
.start = rxrpc_proc_calls_start,
.next = rxrpc_proc_calls_next,
.stop = rxrpc_proc_calls_stop,
.show = rxrpc_proc_calls_show,
};
static const struct file_operations rxrpc_proc_calls_fops = {
.open = rxrpc_proc_calls_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static const char *rxrpc_call_states7[] = {
"complet",
"error ",
"rcv_op ",
"rcv_arg",
"got_arg",
"snd_rpl",
"fin_ack",
"snd_arg",
"rcv_rpl",
"got_rpl"
};
static const char *rxrpc_call_error_states7[] = {
"no_err ",
"loc_abt",
"rmt_abt",
"loc_err",
"rmt_err"
};
/*****************************************************************************/
/*
* initialise the /proc/net/rxrpc/ directory
*/
int rxrpc_proc_init(void)
{
struct proc_dir_entry *p;
proc_rxrpc = proc_mkdir("rxrpc", proc_net);
if (!proc_rxrpc)
goto error;
proc_rxrpc->owner = THIS_MODULE;
p = create_proc_entry("calls", 0, proc_rxrpc);
if (!p)
goto error_proc;
p->proc_fops = &rxrpc_proc_calls_fops;
p->owner = THIS_MODULE;
p = create_proc_entry("connections", 0, proc_rxrpc);
if (!p)
goto error_calls;
p->proc_fops = &rxrpc_proc_conns_fops;
p->owner = THIS_MODULE;
p = create_proc_entry("peers", 0, proc_rxrpc);
if (!p)
goto error_calls;
p->proc_fops = &rxrpc_proc_peers_fops;
p->owner = THIS_MODULE;
p = create_proc_entry("transports", 0, proc_rxrpc);
if (!p)
goto error_conns;
p->proc_fops = &rxrpc_proc_transports_fops;
p->owner = THIS_MODULE;
return 0;
error_conns:
remove_proc_entry("connections", proc_rxrpc);
error_calls:
remove_proc_entry("calls", proc_rxrpc);
error_proc:
remove_proc_entry("rxrpc", proc_net);
error:
return -ENOMEM;
} /* end rxrpc_proc_init() */
/*****************************************************************************/
/*
* clean up the /proc/net/rxrpc/ directory
*/
void rxrpc_proc_cleanup(void)
{
remove_proc_entry("transports", proc_rxrpc);
remove_proc_entry("peers", proc_rxrpc);
remove_proc_entry("connections", proc_rxrpc);
remove_proc_entry("calls", proc_rxrpc);
remove_proc_entry("rxrpc", proc_net);
} /* end rxrpc_proc_cleanup() */
/*****************************************************************************/
/*
* open "/proc/net/rxrpc/transports" which provides a summary of extant transports
*/
static int rxrpc_proc_transports_open(struct inode *inode, struct file *file)
{
struct seq_file *m;
int ret;
ret = seq_open(file, &rxrpc_proc_transports_ops);
if (ret < 0)
return ret;
m = file->private_data;
m->private = PDE(inode)->data;
return 0;
} /* end rxrpc_proc_transports_open() */
/*****************************************************************************/
/*
* set up the iterator to start reading from the transports list and return the first item
*/
static void *rxrpc_proc_transports_start(struct seq_file *m, loff_t *_pos)
{
struct list_head *_p;
loff_t pos = *_pos;
/* lock the list against modification */
down_read(&rxrpc_proc_transports_sem);
/* allow for the header line */
if (!pos)
return SEQ_START_TOKEN;
pos--;
/* find the n'th element in the list */
list_for_each(_p, &rxrpc_proc_transports)
if (!pos--)
break;
return _p != &rxrpc_proc_transports ? _p : NULL;
} /* end rxrpc_proc_transports_start() */
/*****************************************************************************/
/*
* move to next call in transports list
*/
static void *rxrpc_proc_transports_next(struct seq_file *p, void *v, loff_t *pos)
{
struct list_head *_p;
(*pos)++;
_p = v;
_p = (v == SEQ_START_TOKEN) ? rxrpc_proc_transports.next : _p->next;
return _p != &rxrpc_proc_transports ? _p : NULL;
} /* end rxrpc_proc_transports_next() */
/*****************************************************************************/
/*
* clean up after reading from the transports list
*/
static void rxrpc_proc_transports_stop(struct seq_file *p, void *v)
{
up_read(&rxrpc_proc_transports_sem);
} /* end rxrpc_proc_transports_stop() */
/*****************************************************************************/
/*
* display a header line followed by a load of call lines
*/
static int rxrpc_proc_transports_show(struct seq_file *m, void *v)
{
struct rxrpc_transport *trans =
list_entry(v, struct rxrpc_transport, proc_link);
/* display header on line 1 */
if (v == SEQ_START_TOKEN) {
seq_puts(m, "LOCAL USE\n");
return 0;
}
/* display one transport per line on subsequent lines */
seq_printf(m, "%5hu %3d\n",
trans->port,
atomic_read(&trans->usage)
);
return 0;
} /* end rxrpc_proc_transports_show() */
/*****************************************************************************/
/*
* open "/proc/net/rxrpc/peers" which provides a summary of extant peers
*/
static int rxrpc_proc_peers_open(struct inode *inode, struct file *file)
{
struct seq_file *m;
int ret;
ret = seq_open(file, &rxrpc_proc_peers_ops);
if (ret < 0)
return ret;
m = file->private_data;
m->private = PDE(inode)->data;
return 0;
} /* end rxrpc_proc_peers_open() */
/*****************************************************************************/
/*
* set up the iterator to start reading from the peers list and return the
* first item
*/
static void *rxrpc_proc_peers_start(struct seq_file *m, loff_t *_pos)
{
struct list_head *_p;
loff_t pos = *_pos;
/* lock the list against modification */
down_read(&rxrpc_peers_sem);
/* allow for the header line */
if (!pos)
return SEQ_START_TOKEN;
pos--;
/* find the n'th element in the list */
list_for_each(_p, &rxrpc_peers)
if (!pos--)
break;
return _p != &rxrpc_peers ? _p : NULL;
} /* end rxrpc_proc_peers_start() */
/*****************************************************************************/
/*
* move to next conn in peers list
*/
static void *rxrpc_proc_peers_next(struct seq_file *p, void *v, loff_t *pos)
{
struct list_head *_p;
(*pos)++;
_p = v;
_p = (v == SEQ_START_TOKEN) ? rxrpc_peers.next : _p->next;
return _p != &rxrpc_peers ? _p : NULL;
} /* end rxrpc_proc_peers_next() */
/*****************************************************************************/
/*
* clean up after reading from the peers list
*/
static void rxrpc_proc_peers_stop(struct seq_file *p, void *v)
{
up_read(&rxrpc_peers_sem);
} /* end rxrpc_proc_peers_stop() */
/*****************************************************************************/
/*
* display a header line followed by a load of conn lines
*/
static int rxrpc_proc_peers_show(struct seq_file *m, void *v)
{
struct rxrpc_peer *peer = list_entry(v, struct rxrpc_peer, proc_link);
long timeout;
/* display header on line 1 */
if (v == SEQ_START_TOKEN) {
seq_puts(m, "LOCAL REMOTE USAGE CONNS TIMEOUT"
" MTU RTT(uS)\n");
return 0;
}
/* display one peer per line on subsequent lines */
timeout = 0;
if (!list_empty(&peer->timeout.link))
timeout = (long) peer->timeout.timo_jif -
(long) jiffies;
seq_printf(m, "%5hu %08x %5d %5d %8ld %5Zu %7lu\n",
peer->trans->port,
ntohl(peer->addr.s_addr),
atomic_read(&peer->usage),
atomic_read(&peer->conn_count),
timeout,
peer->if_mtu,
(long) peer->rtt
);
return 0;
} /* end rxrpc_proc_peers_show() */
/*****************************************************************************/
/*
* open "/proc/net/rxrpc/connections" which provides a summary of extant
* connections
*/
static int rxrpc_proc_conns_open(struct inode *inode, struct file *file)
{
struct seq_file *m;
int ret;
ret = seq_open(file, &rxrpc_proc_conns_ops);
if (ret < 0)
return ret;
m = file->private_data;
m->private = PDE(inode)->data;
return 0;
} /* end rxrpc_proc_conns_open() */
/*****************************************************************************/
/*
* set up the iterator to start reading from the conns list and return the
* first item
*/
static void *rxrpc_proc_conns_start(struct seq_file *m, loff_t *_pos)
{
struct list_head *_p;
loff_t pos = *_pos;
/* lock the list against modification */
down_read(&rxrpc_conns_sem);
/* allow for the header line */
if (!pos)
return SEQ_START_TOKEN;
pos--;
/* find the n'th element in the list */
list_for_each(_p, &rxrpc_conns)
if (!pos--)
break;
return _p != &rxrpc_conns ? _p : NULL;
} /* end rxrpc_proc_conns_start() */
/*****************************************************************************/
/*
* move to next conn in conns list
*/
static void *rxrpc_proc_conns_next(struct seq_file *p, void *v, loff_t *pos)
{
struct list_head *_p;
(*pos)++;
_p = v;
_p = (v == SEQ_START_TOKEN) ? rxrpc_conns.next : _p->next;
return _p != &rxrpc_conns ? _p : NULL;
} /* end rxrpc_proc_conns_next() */
/*****************************************************************************/
/*
* clean up after reading from the conns list
*/
static void rxrpc_proc_conns_stop(struct seq_file *p, void *v)
{
up_read(&rxrpc_conns_sem);
} /* end rxrpc_proc_conns_stop() */
/*****************************************************************************/
/*
* display a header line followed by a load of conn lines
*/
static int rxrpc_proc_conns_show(struct seq_file *m, void *v)
{
struct rxrpc_connection *conn;
long timeout;
conn = list_entry(v, struct rxrpc_connection, proc_link);
/* display header on line 1 */
if (v == SEQ_START_TOKEN) {
seq_puts(m,
"LOCAL REMOTE RPORT SRVC CONN END SERIALNO "
"CALLNO MTU TIMEOUT"
"\n");
return 0;
}
/* display one conn per line on subsequent lines */
timeout = 0;
if (!list_empty(&conn->timeout.link))
timeout = (long) conn->timeout.timo_jif -
(long) jiffies;
seq_printf(m,
"%5hu %08x %5hu %04hx %08x %-3.3s %08x %08x %5Zu %8ld\n",
conn->trans->port,
ntohl(conn->addr.sin_addr.s_addr),
ntohs(conn->addr.sin_port),
ntohs(conn->service_id),
ntohl(conn->conn_id),
conn->out_clientflag ? "CLT" : "SRV",
conn->serial_counter,
conn->call_counter,
conn->mtu_size,
timeout
);
return 0;
} /* end rxrpc_proc_conns_show() */
/*****************************************************************************/
/*
* open "/proc/net/rxrpc/calls" which provides a summary of extant calls
*/
static int rxrpc_proc_calls_open(struct inode *inode, struct file *file)
{
struct seq_file *m;
int ret;
ret = seq_open(file, &rxrpc_proc_calls_ops);
if (ret < 0)
return ret;
m = file->private_data;
m->private = PDE(inode)->data;
return 0;
} /* end rxrpc_proc_calls_open() */
/*****************************************************************************/
/*
* set up the iterator to start reading from the calls list and return the
* first item
*/
static void *rxrpc_proc_calls_start(struct seq_file *m, loff_t *_pos)
{
struct list_head *_p;
loff_t pos = *_pos;
/* lock the list against modification */
down_read(&rxrpc_calls_sem);
/* allow for the header line */
if (!pos)
return SEQ_START_TOKEN;
pos--;
/* find the n'th element in the list */
list_for_each(_p, &rxrpc_calls)
if (!pos--)
break;
return _p != &rxrpc_calls ? _p : NULL;
} /* end rxrpc_proc_calls_start() */
/*****************************************************************************/
/*
* move to next call in calls list
*/
static void *rxrpc_proc_calls_next(struct seq_file *p, void *v, loff_t *pos)
{
struct list_head *_p;
(*pos)++;
_p = v;
_p = (v == SEQ_START_TOKEN) ? rxrpc_calls.next : _p->next;
return _p != &rxrpc_calls ? _p : NULL;
} /* end rxrpc_proc_calls_next() */
/*****************************************************************************/
/*
* clean up after reading from the calls list
*/
static void rxrpc_proc_calls_stop(struct seq_file *p, void *v)
{
up_read(&rxrpc_calls_sem);
} /* end rxrpc_proc_calls_stop() */
/*****************************************************************************/
/*
* display a header line followed by a load of call lines
*/
static int rxrpc_proc_calls_show(struct seq_file *m, void *v)
{
struct rxrpc_call *call = list_entry(v, struct rxrpc_call, call_link);
/* display header on line 1 */
if (v == SEQ_START_TOKEN) {
seq_puts(m,
"LOCAL REMOT SRVC CONN CALL DIR USE "
" L STATE OPCODE ABORT ERRNO\n"
);
return 0;
}
/* display one call per line on subsequent lines */
seq_printf(m,
"%5hu %5hu %04hx %08x %08x %s %3u%c"
" %c %-7.7s %6d %08x %5d\n",
call->conn->trans->port,
ntohs(call->conn->addr.sin_port),
ntohs(call->conn->service_id),
ntohl(call->conn->conn_id),
ntohl(call->call_id),
call->conn->service ? "SVC" : "CLT",
atomic_read(&call->usage),
waitqueue_active(&call->waitq) ? 'w' : ' ',
call->app_last_rcv ? 'Y' : '-',
(call->app_call_state!=RXRPC_CSTATE_ERROR ?
rxrpc_call_states7[call->app_call_state] :
rxrpc_call_error_states7[call->app_err_state]),
call->app_opcode,
call->app_abort_code,
call->app_errno
);
return 0;
} /* end rxrpc_proc_calls_show() */
