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