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[NET]: dev_mcast: switch to generic net_device address lists 

Use generic net_device address lists for multicast list handling.
Some defines are used to keep drivers working.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-06-27 01:26:58 -07:00 committed by David S. Miller
parent bf742482d7
commit 3fba5a8b1e
2 changed files with 21 additions and 90 deletions
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17
include/linux/netdevice.h
View File

@ -189,15 +189,12 @@ struct dev_addr_list
/*
* We tag multicasts with these structures.
*/
struct dev_mc_list
{
struct dev_mc_list *next;
__u8 dmi_addr[MAX_ADDR_LEN];
unsigned char dmi_addrlen;
int dmi_users;
int dmi_gusers;
};
#define dev_mc_list dev_addr_list
#define dmi_addr da_addr
#define dmi_addrlen da_addrlen
#define dmi_users da_users
#define dmi_gusers da_gusers
struct hh_cache
{
@ -400,7 +397,7 @@ struct net_device
unsigned char addr_len; /* hardware address length */
unsigned short dev_id; /* for shared network cards */
struct dev_mc_list *mc_list; /* Multicast mac addresses */
struct dev_addr_list *mc_list; /* Multicast mac addresses */
int mc_count; /* Number of installed mcasts */
int promiscuity;
int allmulti;

94
net/core/dev_mcast.c
View File

@ -102,47 +102,20 @@ void dev_mc_upload(struct net_device *dev)
int dev_mc_delete(struct net_device *dev, void *addr, int alen, int glbl)
{
int err = 0;
struct dev_mc_list *dmi, **dmip;
int err;
netif_tx_lock_bh(dev);
err = __dev_addr_delete(&dev->mc_list, addr, alen, glbl);
if (!err) {
dev->mc_count--;
for (dmip = &dev->mc_list; (dmi = *dmip) != NULL; dmip = &dmi->next) {
/*
* Find the entry we want to delete. The device could
* have variable length entries so check these too.
* We have altered the list, so the card
* loaded filter is now wrong. Fix it
*/
if (memcmp(dmi->dmi_addr, addr, dmi->dmi_addrlen) == 0 &&
alen == dmi->dmi_addrlen) {
if (glbl) {
int old_glbl = dmi->dmi_gusers;
dmi->dmi_gusers = 0;
if (old_glbl == 0)
break;
}
if (--dmi->dmi_users)
goto done;
/*
* Last user. So delete the entry.
*/
*dmip = dmi->next;
dev->mc_count--;
kfree(dmi);
/*
* We have altered the list, so the card
* loaded filter is now wrong. Fix it
*/
__dev_mc_upload(dev);
netif_tx_unlock_bh(dev);
return 0;
}
__dev_mc_upload(dev);
}
err = -ENOENT;
done:
netif_tx_unlock_bh(dev);
return err;
}
@ -153,46 +126,15 @@ done:
int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
{
int err = 0;
struct dev_mc_list *dmi, *dmi1;
dmi1 = kmalloc(sizeof(*dmi), GFP_ATOMIC);
int err;
netif_tx_lock_bh(dev);
for (dmi = dev->mc_list; dmi != NULL; dmi = dmi->next) {
if (memcmp(dmi->dmi_addr, addr, dmi->dmi_addrlen) == 0 &&
dmi->dmi_addrlen == alen) {
if (glbl) {
int old_glbl = dmi->dmi_gusers;
dmi->dmi_gusers = 1;
if (old_glbl)
goto done;
}
dmi->dmi_users++;
goto done;
}
err = __dev_addr_add(&dev->mc_list, addr, alen, glbl);
if (!err) {
dev->mc_count++;
__dev_mc_upload(dev);
}
if ((dmi = dmi1) == NULL) {
netif_tx_unlock_bh(dev);
return -ENOMEM;
}
memcpy(dmi->dmi_addr, addr, alen);
dmi->dmi_addrlen = alen;
dmi->next = dev->mc_list;
dmi->dmi_users = 1;
dmi->dmi_gusers = glbl ? 1 : 0;
dev->mc_list = dmi;
dev->mc_count++;
__dev_mc_upload(dev);
netif_tx_unlock_bh(dev);
return 0;
done:
netif_tx_unlock_bh(dev);
kfree(dmi1);
return err;
}
@ -203,16 +145,8 @@ done:
void dev_mc_discard(struct net_device *dev)
{
netif_tx_lock_bh(dev);
while (dev->mc_list != NULL) {
struct dev_mc_list *tmp = dev->mc_list;
dev->mc_list = tmp->next;
if (tmp->dmi_users > tmp->dmi_gusers)
printk("dev_mc_discard: multicast leakage! dmi_users=%d\n", tmp->dmi_users);
kfree(tmp);
}
__dev_addr_discard(&dev->mc_list);
dev->mc_count = 0;
netif_tx_unlock_bh(dev);
}
@ -244,7 +178,7 @@ static void dev_mc_seq_stop(struct seq_file *seq, void *v)
static int dev_mc_seq_show(struct seq_file *seq, void *v)
{
struct dev_mc_list *m;
struct dev_addr_list *m;
struct net_device *dev = v;
netif_tx_lock_bh(dev);