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net/bonding: Export bond_option_active_slave_get_rcu

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Some consumers of the netdev events API would like to know who is the
active slave when a NETDEV_CHANGEUPPER or NETDEV_BONDING_FAILOVER
events occur. For example, when managing RoCE GIDs, GIDs based on the
bond's ips should only be set on the port which corresponds to active
slave netdevice.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Matan Barak 2015-07-30 18:33:24 +03:00 committed by Doug Ledford
parent 816dd19b3d
commit e999869548
2 changed files with 7 additions and 13 deletions
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13
drivers/net/bonding/bond_options.c
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@ -730,19 +730,6 @@ static int bond_option_mode_set(struct bonding *bond,
return 0;
}
static struct net_device *__bond_option_active_slave_get(struct bonding *bond,
struct slave *slave)
{
return bond_uses_primary(bond) && slave ? slave->dev : NULL;
}
struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
{
struct slave *slave = rcu_dereference(bond->curr_active_slave);
return __bond_option_active_slave_get(bond, slave);
}
static int bond_option_active_slave_set(struct bonding *bond,
const struct bond_opt_value *newval)
{

7
include/net/bonding.h
View File

@ -310,6 +310,13 @@ static inline bool bond_uses_primary(struct bonding *bond)
return bond_mode_uses_primary(BOND_MODE(bond));
}
static inline struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
{
struct slave *slave = rcu_dereference(bond->curr_active_slave);
return bond_uses_primary(bond) && slave ? slave->dev : NULL;
}
static inline bool bond_slave_is_up(struct slave *slave)
{
return netif_running(slave->dev) && netif_carrier_ok(slave->dev);