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bridge: implement missing ndo_uninit() 

While the bridge driver implements an ndo_init(), it was missing a
symmetric ndo_uninit(), causing the different de-initialization
operations to be scattered around its dellink() and destructor().

Implement a symmetric ndo_uninit() and remove the overlapping operations
from its dellink() and destructor().

This is a prerequisite for the next patch, as it allows us to have a
proper cleanup upon changelink() failure during the bridge's newlink().

Fixes: b6677449df ("bridge: netlink: call br_changelink() during br_dev_newlink()")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2017-04-10 14:59:27 +03:00 committed by David S. Miller
parent 96a94cc515
commit b6fe0440c6
4 changed files with 21 additions and 12 deletions
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20
net/bridge/br_device.c
View File

@ -119,6 +119,15 @@ static int br_dev_init(struct net_device *dev)
return err;
}
static void br_dev_uninit(struct net_device *dev)
{
struct net_bridge *br = netdev_priv(dev);
br_multicast_uninit_stats(br);
br_vlan_flush(br);
free_percpu(br->stats);
}
static int br_dev_open(struct net_device *dev)
{
struct net_bridge *br = netdev_priv(dev);
@ -332,6 +341,7 @@ static const struct net_device_ops br_netdev_ops = {
.ndo_open = br_dev_open,
.ndo_stop = br_dev_stop,
.ndo_init = br_dev_init,
.ndo_uninit = br_dev_uninit,
.ndo_start_xmit = br_dev_xmit,
.ndo_get_stats64 = br_get_stats64,
.ndo_set_mac_address = br_set_mac_address,
@ -356,14 +366,6 @@ static const struct net_device_ops br_netdev_ops = {
.ndo_features_check = passthru_features_check,
};
static void br_dev_free(struct net_device *dev)
{
struct net_bridge *br = netdev_priv(dev);
free_percpu(br->stats);
free_netdev(dev);
}
static struct device_type br_type = {
.name = "bridge",
};
@ -376,7 +378,7 @@ void br_dev_setup(struct net_device *dev)
ether_setup(dev);
dev->netdev_ops = &br_netdev_ops;
dev->destructor = br_dev_free;
dev->destructor = free_netdev;
dev->ethtool_ops = &br_ethtool_ops;
SET_NETDEV_DEVTYPE(dev, &br_type);
dev->priv_flags = IFF_EBRIDGE | IFF_NO_QUEUE;

1
net/bridge/br_if.c
View File

@ -311,7 +311,6 @@ void br_dev_delete(struct net_device *dev, struct list_head *head)
br_fdb_delete_by_port(br, NULL, 0, 1);
br_vlan_flush(br);
br_multicast_dev_del(br);
cancel_delayed_work_sync(&br->gc_work);

7
net/bridge/br_multicast.c
View File

@ -2031,8 +2031,6 @@ void br_multicast_dev_del(struct net_bridge *br)
out:
spin_unlock_bh(&br->multicast_lock);
free_percpu(br->mcast_stats);
}
int br_multicast_set_router(struct net_bridge *br, unsigned long val)
@ -2531,6 +2529,11 @@ int br_multicast_init_stats(struct net_bridge *br)
return 0;
}
void br_multicast_uninit_stats(struct net_bridge *br)
{
free_percpu(br->mcast_stats);
}
static void mcast_stats_add_dir(u64 *dst, u64 *src)
{
dst[BR_MCAST_DIR_RX] += src[BR_MCAST_DIR_RX];

5
net/bridge/br_private.h
View File

@ -620,6 +620,7 @@ void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
void br_multicast_count(struct net_bridge *br, const struct net_bridge_port *p,
const struct sk_buff *skb, u8 type, u8 dir);
int br_multicast_init_stats(struct net_bridge *br);
void br_multicast_uninit_stats(struct net_bridge *br);
void br_multicast_get_stats(const struct net_bridge *br,
const struct net_bridge_port *p,
struct br_mcast_stats *dest);
@ -760,6 +761,10 @@ static inline int br_multicast_init_stats(struct net_bridge *br)
return 0;
}
static inline void br_multicast_uninit_stats(struct net_bridge *br)
{
}
static inline int br_multicast_igmp_type(const struct sk_buff *skb)
{
return 0;