Commit 92f8b857 authored by Hideaki Yoshifuji's avatar Hideaki Yoshifuji Committed by James Morris

[NET] convert /proc/net/anycast6 to seq_file

parent ba22d84c
......@@ -85,7 +85,8 @@ extern int udp6_proc_init(void);
extern void udp6_proc_exit(void);
extern int ipv6_misc_proc_init(void);
extern void ipv6_misc_proc_exit(void);
extern int anycast6_get_info(char *, char **, off_t, int);
extern int ac6_proc_init(void);
extern void ac6_proc_exit(void);
extern int if6_proc_init(void);
extern void if6_proc_exit(void);
#endif
......@@ -799,7 +800,7 @@ static int __init inet6_init(void)
if (ipv6_misc_proc_init())
goto proc_misc6_fail;
if (!proc_net_create("anycast6", 0, anycast6_get_info))
if (ac6_proc_init())
goto proc_anycast6_fail;
if (if6_proc_init())
goto proc_if6_fail;
......@@ -825,7 +826,7 @@ static int __init inet6_init(void)
#ifdef CONFIG_PROC_FS
proc_if6_fail:
proc_net_remove("anycast6");
ac6_proc_exit();
proc_anycast6_fail:
ipv6_misc_proc_exit();
proc_misc6_fail:
......@@ -863,7 +864,7 @@ static void inet6_exit(void)
sock_unregister(PF_INET6);
#ifdef CONFIG_PROC_FS
if6_proc_exit();
proc_net_remove("anycast6");
ac6_proc_exit();
ipv6_misc_proc_exit();
udp6_proc_exit();
tcp6_proc_exit();
......
......@@ -29,6 +29,7 @@
#include <linux/route.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/sock.h>
#include <net/snmp.h>
......@@ -435,56 +436,159 @@ int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr)
#ifdef CONFIG_PROC_FS
int anycast6_get_info(char *buffer, char **start, off_t offset, int length)
{
off_t pos=0, begin=0;
struct ifacaddr6 *im;
int len=0;
struct ac6_iter_state {
struct net_device *dev;
read_lock(&dev_base_lock);
for (dev = dev_base; dev; dev = dev->next) {
struct inet6_dev *idev;
};
if ((idev = in6_dev_get(dev)) == NULL)
continue;
read_lock_bh(&idev->lock);
for (im = idev->ac_list; im; im = im->aca_next) {
int i;
len += sprintf(buffer+len,"%-4d %-15s ", dev->ifindex, dev->name);
#define ac6_seq_private(seq) ((struct ac6_iter_state *)&seq->private)
for (i=0; i<16; i++)
len += sprintf(buffer+len, "%02x", im->aca_addr.s6_addr[i]);
len += sprintf(buffer+len, " %5d\n", im->aca_users);
static inline struct ifacaddr6 *ac6_get_first(struct seq_file *seq)
{
struct ifacaddr6 *im = NULL;
struct ac6_iter_state *state = ac6_seq_private(seq);
pos=begin+len;
if (pos < offset) {
len=0;
begin=pos;
for (state->dev = dev_base, state->idev = NULL;
state->dev;
state->dev = state->dev->next) {
struct inet6_dev *idev;
idev = in6_dev_get(state->dev);
if (!idev)
continue;
read_lock_bh(&idev->lock);
im = idev->ac_list;
if (im) {
state->idev = idev;
break;
}
if (pos > offset+length) {
read_unlock_bh(&idev->lock);
in6_dev_put(idev);
goto done;
}
return im;
}
static struct ifacaddr6 *ac6_get_next(struct seq_file *seq, struct ifacaddr6 *im)
{
struct ac6_iter_state *state = ac6_seq_private(seq);
im = im->aca_next;
while (!im) {
if (likely(state->idev != NULL)) {
read_unlock_bh(&state->idev->lock);
in6_dev_put(state->idev);
}
read_unlock_bh(&idev->lock);
in6_dev_put(idev);
state->dev = state->dev->next;
if (!state->dev) {
state->idev = NULL;
break;
}
state->idev = in6_dev_get(state->dev);
if (!state->idev)
continue;
read_lock_bh(&state->idev->lock);
im = state->idev->ac_list;
}
return im;
}
done:
static struct ifacaddr6 *ac6_get_idx(struct seq_file *seq, loff_t pos)
{
struct ifacaddr6 *im = ac6_get_first(seq);
if (im)
while (pos && (im = ac6_get_next(seq, im)) != NULL)
--pos;
return pos ? NULL : im;
}
static void *ac6_seq_start(struct seq_file *seq, loff_t *pos)
{
read_lock(&dev_base_lock);
return *pos ? ac6_get_idx(seq, *pos) : ac6_get_first(seq);
}
static void *ac6_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct ifacaddr6 *im;
im = ac6_get_next(seq, v);
++*pos;
return im;
}
static void ac6_seq_stop(struct seq_file *seq, void *v)
{
struct ac6_iter_state *state = ac6_seq_private(seq);
if (likely(state->idev != NULL)) {
read_unlock_bh(&state->idev->lock);
in6_dev_put(state->idev);
}
read_unlock(&dev_base_lock);
}
*start=buffer+(offset-begin);
len-=(offset-begin);
if(len>length)
len=length;
if (len<0)
len=0;
return len;
static int ac6_seq_show(struct seq_file *seq, void *v)
{
struct ifacaddr6 *im = (struct ifacaddr6 *)v;
struct ac6_iter_state *state = ac6_seq_private(seq);
seq_printf(seq,
"%-4d %-15s "
"%04x%04x%04x%04x%04x%04x%04x%04x "
"%5d\n",
state->dev->ifindex, state->dev->name,
NIP6(im->aca_addr),
im->aca_users);
return 0;
}
static struct seq_operations ac6_seq_ops = {
.start = ac6_seq_start,
.next = ac6_seq_next,
.stop = ac6_seq_stop,
.show = ac6_seq_show,
};
static int ac6_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int rc = -ENOMEM;
struct ac6_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
if (!s)
goto out;
rc = seq_open(file, &ac6_seq_ops);
if (rc)
goto out_kfree;
seq = file->private_data;
seq->private = s;
memset(s, 0, sizeof(*s));
out:
return rc;
out_kfree:
kfree(s);
goto out;
}
static struct file_operations ac6_seq_fops = {
.owner = THIS_MODULE,
.open = ac6_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_private,
};
int __init ac6_proc_init(void)
{
struct proc_dir_entry *p;
p = create_proc_entry("anycast6", S_IRUGO, proc_net);
if (p)
p->proc_fops = &ac6_seq_fops;
return 0;
}
void ac6_proc_exit(void)
{
proc_net_remove("anycast6");
}
#endif
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