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[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: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Hendry 2007-02-08 13:35:18 -08:00 committed by David S. Miller
parent 39e21c0d34
commit c9c2e9dcb8
1 changed files with 98 additions and 0 deletions
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98
net/x25/x25_proc.c
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@ -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);