/*
* X.25 Packet Layer release 002
*
* This is ALPHA test software. This code may break your machine,
* randomly fail to work with new releases, misbehave and/or generally
* screw up. It might even work.
*
* This code REQUIRES 2.4 with seq_file support
*
* This module:
* This module 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.
*
* History
* 2002/10/06 Arnaldo Carvalho de Melo seq_file support
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/sock.h>
#include <net/x25.h>
#ifdef CONFIG_PROC_FS
static __inline__ struct x25_route *x25_get_route_idx(loff_t pos)
{
struct list_head *route_entry;
struct x25_route *rt = NULL;
list_for_each(route_entry, &x25_route_list) {
rt = list_entry(route_entry, struct x25_route, node);
if (!pos--)
goto found;
}
rt = NULL;
found:
return rt;
}
static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos)
{
loff_t l = *pos;
read_lock_bh(&x25_route_list_lock);
return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN;
}
static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct x25_route *rt;
++*pos;
if (v == SEQ_START_TOKEN) {
rt = NULL;
if (!list_empty(&x25_route_list))
rt = list_entry(x25_route_list.next,
struct x25_route, node);
goto out;
}
rt = v;
if (rt->node.next != &x25_route_list)
rt = list_entry(rt->node.next, struct x25_route, node);
else
rt = NULL;
out:
return rt;
}
static void x25_seq_route_stop(struct seq_file *seq, void *v)
{
read_unlock_bh(&x25_route_list_lock);
}
static int x25_seq_route_show(struct seq_file *seq, void *v)
{
struct x25_route *rt;
if (v == SEQ_START_TOKEN) {
seq_puts(seq, "Address Digits Device\n");
goto out;
}
rt = v;
seq_printf(seq, "%-15s %-6d %-5s\n",
rt->address.x25_addr, rt->sigdigits,
rt->dev ? rt->dev->name : "???");
out:
return 0;
}
static __inline__ struct sock *x25_get_socket_idx(loff_t pos)
{
struct sock *s;
struct hlist_node *node;
sk_for_each(s, node, &x25_list)
if (!pos--)
goto found;
s = NULL;
found:
return s;
}
static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos)
{
loff_t l = *pos;
read_lock_bh(&x25_list_lock);
return l ? x25_get_socket_idx(--l) : SEQ_START_TOKEN;
}
static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct sock *s;
++*pos;
if (v == SEQ_START_TOKEN) {
s = sk_head(&x25_list);
goto out;
}
s = sk_next(v);
out:
return s;
}
static void x25_seq_socket_stop(struct seq_file *seq, void *v)
{
read_unlock_bh(&x25_list_lock);
}
static int x25_seq_socket_show(struct seq_file *seq, void *v)
{
struct sock *s;
struct x25_sock *x25;
struct net_device *dev;
const char *devname;
if (v == SEQ_START_TOKEN) {
seq_printf(seq, "dest_addr src_addr dev lci st vs vr "
"va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n");
goto out;
}
s = v;
x25 = x25_sk(s);
if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL)
devname = "???";
else
devname = x25->neighbour->dev->name;
seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu "
"%3lu %3lu %3lu %5d %5d %ld\n",
!x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr,
!x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr,
devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr,
x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ,
x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ,
atomic_read(&s->sk_wmem_alloc),
atomic_read(&s->sk_rmem_alloc),
s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
out:
return 0;
}
static struct seq_operations x25_seq_route_ops = {
.start = x25_seq_route_start,
.next = x25_seq_route_next,
.stop = x25_seq_route_stop,
.show = x25_seq_route_show,
};
static struct seq_operations x25_seq_socket_ops = {
.start = x25_seq_socket_start,
.next = x25_seq_socket_next,
.stop = x25_seq_socket_stop,
.show = x25_seq_socket_show,
};
static int x25_seq_socket_open(struct inode *inode, struct file *file)
{
return seq_open(file, &x25_seq_socket_ops);
}
static int x25_seq_route_open(struct inode *inode, struct file *file)
{
return seq_open(file, &x25_seq_route_ops);
}
static struct file_operations x25_seq_socket_fops = {
.owner = THIS_MODULE,
.open = x25_seq_socket_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static struct file_operations x25_seq_route_fops = {
.owner = THIS_MODULE,
.open = x25_seq_route_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
static struct proc_dir_entry *x25_proc_dir;
int __init x25_proc_init(void)
{
struct proc_dir_entry *p;
int rc = -ENOMEM;
x25_proc_dir = proc_mkdir("x25", proc_net);
if (!x25_proc_dir)
goto out;
p = create_proc_entry("route", S_IRUGO, x25_proc_dir);
if (!p)
goto out_route;
p->proc_fops = &x25_seq_route_fops;
p = create_proc_entry("socket", S_IRUGO, x25_proc_dir);
if (!p)
goto out_socket;
p->proc_fops = &x25_seq_socket_fops;
rc = 0;
out:
return rc;
out_socket:
remove_proc_entry("route", x25_proc_dir);
out_route:
remove_proc_entry("x25", proc_net);
goto out;
}
void __exit x25_proc_exit(void)
{
remove_proc_entry("route", x25_proc_dir);
remove_proc_entry("socket", x25_proc_dir);
remove_proc_entry("x25", proc_net);
}
#else /* CONFIG_PROC_FS */
int __init x25_proc_init(void)
{
return 0;
}
void __exit x25_proc_exit(void)
{
}
#endif /* CONFIG_PROC_FS */
