From fee6d4c777a125e56de9370db3b2bf359bf958d6 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Mon, 5 Oct 2015 08:51:24 -0700 Subject: [PATCH] net: Add netif_is_l3_slave 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 Signed-off-by: David S. Miller --- drivers/net/vrf.c | 10 ++++------ include/linux/netdevice.h | 7 +++++++ net/l3mdev/l3mdev.c | 8 ++++---- 3 files changed, 15 insertions(+), 10 deletions(-) diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c index 4fd5af1acff0..8713317eed86 100644 --- a/drivers/net/vrf.c +++ b/drivers/net/vrf.c @@ -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); diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index b9450784ae06..b3374402c1ea 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -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; diff --git a/net/l3mdev/l3mdev.c b/net/l3mdev/l3mdev.c index ddf75ad41713..8e5ead366e7f 100644 --- a/net/l3mdev/l3mdev.c +++ b/net/l3mdev/l3mdev.c @@ -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); } -- 2.20.1