[PATCH V4 mlx5-next 07/15] bonding: Add function to get the xmit slave in active-backup mode

Maor Gottlieb
2020-04-22T08:40:26Z

Add helper function to get the xmit slave in active-backup mode.
It's only one line function that return the curr_active_slave,
but it will used both in the xmit flow and by the new .ndo to get
the xmit slave.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Jay Vosburgh <jay.vosburgh@canonical.com>
---
drivers/net/bonding/bond_main.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 09c8485e965d..1b0ae750d732 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4042,6 +4042,12 @@ static netdev_tx_t bond_xmit_roundrobin(struct sk_buff *skb,
return NETDEV_TX_OK;
}

+static struct slave *bond_xmit_activebackup_slave_get(struct bonding *bond,
+ struct sk_buff *skb)
+{
+ return rcu_dereference(bond->curr_active_slave);
+}
+
/* In active-backup mode, we know that bond->curr_active_slave is always valid if
* the bond has a usable interface.
*/
@@ -4051,7 +4057,7 @@ static netdev_tx_t bond_xmit_activebackup(struct sk_buff *skb,
struct bonding *bond = netdev_priv(bond_dev);
struct slave *slave;

- slave = rcu_dereference(bond->curr_active_slave);
+ slave = bond_xmit_activebackup_slave_get(bond, skb);
if (slave)
bond_dev_queue_xmit(bond, skb, slave->dev);
else
--
2.17.2