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[NET]: move dev_mc_discard from dev_mcast.c to dev.c 

Because this function is only called by unregister_netdevice,
this moving could make this non-global function static,
and also remove its declaration in netdevice.h;

Any further, function __dev_addr_discard is also just called by
dev_mc_discard and dev_unicast_discard, keeping this two functions
both in one c file could make __dev_addr_discard also static
and remove its declaration in netdevice.h;

Futhermore, the sequential call to dev_unicast_discard and then
dev_mc_discard in unregister_netdevice have a similar mechanism that:
(netif_tx_lock_bh / __dev_addr_discard / netif_tx_unlock_bh),
they should merged into one to eliminate duplicates in acquiring and
releasing the dev->_xmit_lock, this would be done in my following patch.

Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Denis Cheng 2007-07-18 02:10:54 -07:00 committed by David S. Miller
parent eb49653449
commit 456ad75c89
3 changed files with 13 additions and 15 deletions
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2
include/linux/netdevice.h
View File

@ -1098,10 +1098,8 @@ extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all
extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
extern int dev_mc_sync(struct net_device *to, struct net_device *from);
extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
extern void dev_mc_discard(struct net_device *dev);
extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
extern void __dev_addr_discard(struct dev_addr_list **list);
extern void dev_set_promiscuity(struct net_device *dev, int inc);
extern void dev_set_allmulti(struct net_device *dev, int inc);
extern void netdev_state_change(struct net_device *dev);

14
net/core/dev.c
View File

@ -2715,7 +2715,7 @@ int __dev_addr_add(struct dev_addr_list **list, int *count,
return 0;
}
void __dev_addr_discard(struct dev_addr_list **list)
static void __dev_addr_discard(struct dev_addr_list **list)
{
struct dev_addr_list *tmp;
@ -2785,6 +2785,18 @@ static void dev_unicast_discard(struct net_device *dev)
netif_tx_unlock_bh(dev);
}
/*
* Discard multicast list when a device is downed
*/
static void dev_mc_discard(struct net_device *dev)
{
netif_tx_lock_bh(dev);
__dev_addr_discard(&dev->mc_list);
dev->mc_count = 0;
netif_tx_unlock_bh(dev);
}
unsigned dev_get_flags(const struct net_device *dev)
{
unsigned flags;

12
net/core/dev_mcast.c
View File

@ -177,18 +177,6 @@ void dev_mc_unsync(struct net_device *to, struct net_device *from)
}
EXPORT_SYMBOL(dev_mc_unsync);
/*
* Discard multicast list when a device is downed
*/
void dev_mc_discard(struct net_device *dev)
{
netif_tx_lock_bh(dev);
__dev_addr_discard(&dev->mc_list);
dev->mc_count = 0;
netif_tx_unlock_bh(dev);
}
#ifdef CONFIG_PROC_FS
static void *dev_mc_seq_start(struct seq_file *seq, loff_t *pos)
{