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linux-sg2042
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[NET]: Use existing device list walker for /proc/dev_mcast. 

The seq_file_operations' dev_mc_seq_xxx callbacks do the same thing as
the dev_seq_xxx ones do, but skip the SEQ_START_TOKEN.

So use the existing exported dev_seq_xxx calls and handle the
SEQ_START_TOKEN in the dev_mc_seq_show().

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2008-02-29 11:44:14 -08:00 committed by David S. Miller
parent fd80eb942a
commit 95a363582b
1 changed files with 6 additions and 31 deletions
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37
net/core/dev_mcast.c
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@ -156,39 +156,14 @@ void dev_mc_unsync(struct net_device *to, struct net_device *from)
EXPORT_SYMBOL(dev_mc_unsync);
#ifdef CONFIG_PROC_FS
static void *dev_mc_seq_start(struct seq_file *seq, loff_t *pos)
__acquires(dev_base_lock)
{
struct net *net = seq_file_net(seq);
struct net_device *dev;
loff_t off = 0;
read_lock(&dev_base_lock);
for_each_netdev(net, dev) {
if (off++ == *pos)
return dev;
}
return NULL;
}
static void *dev_mc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
++*pos;
return next_net_device((struct net_device *)v);
}
static void dev_mc_seq_stop(struct seq_file *seq, void *v)
__releases(dev_base_lock)
{
read_unlock(&dev_base_lock);
}
static int dev_mc_seq_show(struct seq_file *seq, void *v)
{
struct dev_addr_list *m;
struct net_device *dev = v;
if (v == SEQ_START_TOKEN)
return 0;
netif_tx_lock_bh(dev);
for (m = dev->mc_list; m; m = m->next) {
int i;
@ -206,9 +181,9 @@ static int dev_mc_seq_show(struct seq_file *seq, void *v)
}
static const struct seq_operations dev_mc_seq_ops = {
.start = dev_mc_seq_start,
.next = dev_mc_seq_next,
.stop = dev_mc_seq_stop,
.start = dev_seq_start,
.next = dev_seq_next,
.stop = dev_seq_stop,
.show = dev_mc_seq_show,
};