Commit c9c2e9dc authored by Andrew Hendry's avatar Andrew Hendry Committed by David S. Miller
Browse files

[X.25]: Adds /proc/net/x25/forward to view active forwarded calls. 



View the active forwarded calls
cat /proc/net/x25/forward

Signed-off-by: default avatarAndrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 39e21c0d

net/x25/x25_proc.c

+98 −0
Original line number Diff line number Diff line
@@ -165,6 +165,75 @@ static int x25_seq_socket_show(struct seq_file *seq, void *v) 
	return 0;

} 



static __inline__ struct x25_forward *x25_get_forward_idx(loff_t pos)

{

	struct x25_forward *f;

	struct list_head *entry;



	list_for_each(entry, &x25_forward_list) {

		f = list_entry(entry, struct x25_forward, node);

		if (!pos--)

			goto found;

	}



	f = NULL;

found:

	return f;

}



static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos)

{

	loff_t l = *pos;



	read_lock_bh(&x25_forward_list_lock);

	return l ? x25_get_forward_idx(--l) : SEQ_START_TOKEN;

}



static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos)

{

	struct x25_forward *f;



	++*pos;

	if (v == SEQ_START_TOKEN) {

		f = NULL;

		if (!list_empty(&x25_forward_list))

			f = list_entry(x25_forward_list.next,

					struct x25_forward, node);

		goto out;

	}

	f = v;

	if (f->node.next != &x25_forward_list)

		f = list_entry(f->node.next, struct x25_forward, node);

	else

		f = NULL;

out:

	return f;



}



static void x25_seq_forward_stop(struct seq_file *seq, void *v)

{

	read_unlock_bh(&x25_forward_list_lock);

}



static int x25_seq_forward_show(struct seq_file *seq, void *v)

{

	struct x25_forward *f;



	if (v == SEQ_START_TOKEN) {

		seq_printf(seq, "lci dev1       dev2\n");

		goto out;

	}



	f = v;



	seq_printf(seq, "%d %-10s %-10s\n",

			f->lci, f->dev1->name, f->dev2->name);



out:

	return 0;

}



static struct seq_operations x25_seq_route_ops = {

	.start  = x25_seq_route_start,

	.next   = x25_seq_route_next,
@@ -179,6 +248,13 @@ static struct seq_operations x25_seq_socket_ops = { 
	.show   = x25_seq_socket_show,

};



static struct seq_operations x25_seq_forward_ops = {

	.start  = x25_seq_forward_start,

	.next   = x25_seq_forward_next,

	.stop   = x25_seq_forward_stop,

	.show   = x25_seq_forward_show,

};



static int x25_seq_socket_open(struct inode *inode, struct file *file)

{

	return seq_open(file, &x25_seq_socket_ops);
@@ -189,6 +265,11 @@ static int x25_seq_route_open(struct inode *inode, struct file *file) 
	return seq_open(file, &x25_seq_route_ops);

}



static int x25_seq_forward_open(struct inode *inode, struct file *file)

{

	return seq_open(file, &x25_seq_forward_ops);

}



static struct file_operations x25_seq_socket_fops = {

	.owner		= THIS_MODULE,

	.open		= x25_seq_socket_open,
@@ -205,6 +286,14 @@ static struct file_operations x25_seq_route_fops = { 
	.release	= seq_release,

};



static struct file_operations x25_seq_forward_fops = {

	.owner		= THIS_MODULE,

	.open		= x25_seq_forward_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= seq_release,

};



static struct proc_dir_entry *x25_proc_dir;



int __init x25_proc_init(void)
@@ -225,9 +314,17 @@ int __init x25_proc_init(void) 
	if (!p)

		goto out_socket;

	p->proc_fops = &x25_seq_socket_fops;



	p = create_proc_entry("forward", S_IRUGO, x25_proc_dir);

	if (!p)

		goto out_forward;

	p->proc_fops = &x25_seq_forward_fops;

	rc = 0;



out:

	return rc;

out_forward:

	remove_proc_entry("socket", x25_proc_dir);

out_socket:

	remove_proc_entry("route", x25_proc_dir);

out_route:
@@ -237,6 +334,7 @@ int __init x25_proc_init(void) 


void __exit x25_proc_exit(void)

{

	remove_proc_entry("forward", x25_proc_dir);

	remove_proc_entry("route", x25_proc_dir);

	remove_proc_entry("socket", x25_proc_dir);

	remove_proc_entry("x25", proc_net);