![David Howells](/assets/img/avatar_default.png)
Allocated rxrpc calls displayed in /proc/net/rxrpc_calls may in future be on the proc list before they're connected or after they've been disconnected - in which case they may not have a pointer to a connection struct that can be used to get data from there. Deal with this by using stuff from the call struct in preference where possible and printing "no_connection" rather than a peer address if no connection is assigned. This change also has the added bonus that the service ID is now taken from the call rather the connection which will allow per-call service upgrades to be shown - something required for AuriStor server compatibility. Signed-off-by: David Howells <dhowells@redhat.com>
194 lines
5.1 KiB
C
194 lines
5.1 KiB
C
/* /proc/net/ support for AF_RXRPC
|
|
*
|
|
* Copyright (C) 2007 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/module.h>
|
|
#include <net/sock.h>
|
|
#include <net/af_rxrpc.h>
|
|
#include "ar-internal.h"
|
|
|
|
static const char *const rxrpc_conn_states[] = {
|
|
[RXRPC_CONN_UNUSED] = "Unused ",
|
|
[RXRPC_CONN_CLIENT] = "Client ",
|
|
[RXRPC_CONN_SERVER_UNSECURED] = "SvUnsec ",
|
|
[RXRPC_CONN_SERVER_CHALLENGING] = "SvChall ",
|
|
[RXRPC_CONN_SERVER] = "SvSecure",
|
|
[RXRPC_CONN_REMOTELY_ABORTED] = "RmtAbort",
|
|
[RXRPC_CONN_LOCALLY_ABORTED] = "LocAbort",
|
|
[RXRPC_CONN_NETWORK_ERROR] = "NetError",
|
|
};
|
|
|
|
/*
|
|
* generate a list of extant and dead calls in /proc/net/rxrpc_calls
|
|
*/
|
|
static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos)
|
|
{
|
|
read_lock(&rxrpc_call_lock);
|
|
return seq_list_start_head(&rxrpc_calls, *_pos);
|
|
}
|
|
|
|
static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
|
|
{
|
|
return seq_list_next(v, &rxrpc_calls, pos);
|
|
}
|
|
|
|
static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
|
|
{
|
|
read_unlock(&rxrpc_call_lock);
|
|
}
|
|
|
|
static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct rxrpc_connection *conn;
|
|
struct rxrpc_call *call;
|
|
char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
|
|
|
|
if (v == &rxrpc_calls) {
|
|
seq_puts(seq,
|
|
"Proto Local Remote "
|
|
" SvID ConnID CallID End Use State Abort "
|
|
" UserID\n");
|
|
return 0;
|
|
}
|
|
|
|
call = list_entry(v, struct rxrpc_call, link);
|
|
|
|
sprintf(lbuff, "%pI4:%u",
|
|
&call->local->srx.transport.sin.sin_addr,
|
|
ntohs(call->local->srx.transport.sin.sin_port));
|
|
|
|
conn = call->conn;
|
|
if (conn)
|
|
sprintf(rbuff, "%pI4:%u",
|
|
&conn->params.peer->srx.transport.sin.sin_addr,
|
|
ntohs(conn->params.peer->srx.transport.sin.sin_port));
|
|
else
|
|
strcpy(rbuff, "no_connection");
|
|
|
|
seq_printf(seq,
|
|
"UDP %-22.22s %-22.22s %4x %08x %08x %s %3u"
|
|
" %-8.8s %08x %lx\n",
|
|
lbuff,
|
|
rbuff,
|
|
call->service_id,
|
|
call->cid,
|
|
call->call_id,
|
|
call->in_clientflag ? "Svc" : "Clt",
|
|
atomic_read(&call->usage),
|
|
rxrpc_call_states[call->state],
|
|
call->remote_abort ?: call->local_abort,
|
|
call->user_call_ID);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations rxrpc_call_seq_ops = {
|
|
.start = rxrpc_call_seq_start,
|
|
.next = rxrpc_call_seq_next,
|
|
.stop = rxrpc_call_seq_stop,
|
|
.show = rxrpc_call_seq_show,
|
|
};
|
|
|
|
static int rxrpc_call_seq_open(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &rxrpc_call_seq_ops);
|
|
}
|
|
|
|
const struct file_operations rxrpc_call_seq_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = rxrpc_call_seq_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/*
|
|
* generate a list of extant virtual connections in /proc/net/rxrpc_conns
|
|
*/
|
|
static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
|
|
{
|
|
read_lock(&rxrpc_connection_lock);
|
|
return seq_list_start_head(&rxrpc_connections, *_pos);
|
|
}
|
|
|
|
static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
|
|
loff_t *pos)
|
|
{
|
|
return seq_list_next(v, &rxrpc_connections, pos);
|
|
}
|
|
|
|
static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
|
|
{
|
|
read_unlock(&rxrpc_connection_lock);
|
|
}
|
|
|
|
static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct rxrpc_connection *conn;
|
|
char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
|
|
|
|
if (v == &rxrpc_connections) {
|
|
seq_puts(seq,
|
|
"Proto Local Remote "
|
|
" SvID ConnID Calls End Use State Key "
|
|
" Serial ISerial\n"
|
|
);
|
|
return 0;
|
|
}
|
|
|
|
conn = list_entry(v, struct rxrpc_connection, link);
|
|
|
|
sprintf(lbuff, "%pI4:%u",
|
|
&conn->params.local->srx.transport.sin.sin_addr,
|
|
ntohs(conn->params.local->srx.transport.sin.sin_port));
|
|
|
|
sprintf(rbuff, "%pI4:%u",
|
|
&conn->params.peer->srx.transport.sin.sin_addr,
|
|
ntohs(conn->params.peer->srx.transport.sin.sin_port));
|
|
|
|
seq_printf(seq,
|
|
"UDP %-22.22s %-22.22s %4x %08x %08x %s %3u"
|
|
" %s %08x %08x %08x\n",
|
|
lbuff,
|
|
rbuff,
|
|
conn->params.service_id,
|
|
conn->proto.cid,
|
|
conn->call_counter,
|
|
rxrpc_conn_is_service(conn) ? "Svc" : "Clt",
|
|
atomic_read(&conn->usage),
|
|
rxrpc_conn_states[conn->state],
|
|
key_serial(conn->params.key),
|
|
atomic_read(&conn->serial),
|
|
atomic_read(&conn->hi_serial));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations rxrpc_connection_seq_ops = {
|
|
.start = rxrpc_connection_seq_start,
|
|
.next = rxrpc_connection_seq_next,
|
|
.stop = rxrpc_connection_seq_stop,
|
|
.show = rxrpc_connection_seq_show,
|
|
};
|
|
|
|
|
|
static int rxrpc_connection_seq_open(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &rxrpc_connection_seq_ops);
|
|
}
|
|
|
|
const struct file_operations rxrpc_connection_seq_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = rxrpc_connection_seq_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|