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net: Add netif_is_l3_slave

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IPv6 addrconf keys off of IFF_SLAVE so can not use it for L3 slave.
Add a new private flag and add netif_is_l3_slave function for checking
it.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2015-10-05 08:51:24 -07:00 committed by David S. Miller
parent 6e2895a8e3
commit fee6d4c777
3 changed files with 15 additions and 10 deletions
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10
drivers/net/vrf.c
View File

@ -39,8 +39,6 @@
#define DRV_NAME "vrf"
#define DRV_VERSION "1.0"
#define vrf_is_slave(dev) ((dev)->flags & IFF_SLAVE)
#define vrf_master_get_rcu(dev) \
((struct net_device *)rcu_dereference(dev->rx_handler_data))
@ -433,7 +431,7 @@ static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
if (ret < 0)
goto out_unregister;
port_dev->flags |= IFF_SLAVE;
port_dev->priv_flags |= IFF_L3MDEV_SLAVE;
__vrf_insert_slave(queue, slave);
cycle_netdev(port_dev);
@ -448,7 +446,7 @@ out_fail:
static int vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
{
if (netif_is_l3_master(port_dev) || vrf_is_slave(port_dev))
if (netif_is_l3_master(port_dev) || netif_is_l3_slave(port_dev))
return -EINVAL;
return do_vrf_add_slave(dev, port_dev);
@ -462,7 +460,7 @@ static int do_vrf_del_slave(struct net_device *dev, struct net_device *port_dev)
struct slave *slave;
netdev_upper_dev_unlink(port_dev, dev);
port_dev->flags &= ~IFF_SLAVE;
port_dev->priv_flags &= ~IFF_L3MDEV_SLAVE;
netdev_rx_handler_unregister(port_dev);
@ -672,7 +670,7 @@ static int vrf_device_event(struct notifier_block *unused,
if (event == NETDEV_UNREGISTER) {
struct net_device *vrf_dev;
if (!vrf_is_slave(dev) || netif_is_l3_master(dev))
if (!netif_is_l3_slave(dev))
goto out;
vrf_dev = netdev_master_upper_dev_get(dev);

7
include/linux/netdevice.h
View File

@ -1261,6 +1261,7 @@ struct net_device_ops {
* @IFF_L3MDEV_MASTER: device is an L3 master device
* @IFF_NO_QUEUE: device can run without qdisc attached
* @IFF_OPENVSWITCH: device is a Open vSwitch master
* @IFF_L3MDEV_SLAVE: device is enslaved to an L3 master device
*/
enum netdev_priv_flags {
IFF_802_1Q_VLAN = 1<<0,
@ -1286,6 +1287,7 @@ enum netdev_priv_flags {
IFF_L3MDEV_MASTER = 1<<20,
IFF_NO_QUEUE = 1<<21,
IFF_OPENVSWITCH = 1<<22,
IFF_L3MDEV_SLAVE = 1<<23,
};
#define IFF_802_1Q_VLAN IFF_802_1Q_VLAN
@ -3830,6 +3832,11 @@ static inline bool netif_is_l3_master(const struct net_device *dev)
return dev->priv_flags & IFF_L3MDEV_MASTER;
}
static inline bool netif_is_l3_slave(const struct net_device *dev)
{
return dev->priv_flags & IFF_L3MDEV_SLAVE;
}
static inline bool netif_is_bridge_master(const struct net_device *dev)
{
return dev->priv_flags & IFF_EBRIDGE;

8
net/l3mdev/l3mdev.c
View File

@ -26,11 +26,11 @@ int l3mdev_master_ifindex_rcu(struct net_device *dev)
if (netif_is_l3_master(dev)) {
ifindex = dev->ifindex;
} else if (dev->flags & IFF_SLAVE) {
} else if (netif_is_l3_slave(dev)) {
struct net_device *master;
master = netdev_master_upper_dev_get_rcu(dev);
if (master && netif_is_l3_master(master))
if (master)
ifindex = master->ifindex;
}
@ -54,7 +54,7 @@ u32 l3mdev_fib_table_rcu(const struct net_device *dev)
if (netif_is_l3_master(dev)) {
if (dev->l3mdev_ops->l3mdev_fib_table)
tb_id = dev->l3mdev_ops->l3mdev_fib_table(dev);
} else if (dev->flags & IFF_SLAVE) {
} else if (netif_is_l3_slave(dev)) {
/* Users of netdev_master_upper_dev_get_rcu need non-const,
* but current inet_*type functions take a const
*/
@ -62,7 +62,7 @@ u32 l3mdev_fib_table_rcu(const struct net_device *dev)
const struct net_device *master;
master = netdev_master_upper_dev_get_rcu(_dev);
if (master && netif_is_l3_master(master) &&
if (master &&
master->l3mdev_ops->l3mdev_fib_table)
tb_id = master->l3mdev_ops->l3mdev_fib_table(master);
}