From 18e1e9bc5d1b9b89853a23aaeeed39686a95551b Mon Sep 17 00:00:00 2001 From: Veaceslav Falico Date: Wed, 25 Sep 2013 09:20:26 +0200 Subject: bonding: add __bond_next_slave() which uses neighbours Add a new function, __bond_next_slave(), which uses neighbours to find the next slave after the slave provided. It will be further used to gradually go start using neighbour netdev_adjacent infrastructure instead of bonding's own lists. CC: Jay Vosburgh CC: Andy Gospodarek CC: Ben Hutchings Signed-off-by: Veaceslav Falico Signed-off-by: David S. Miller --- drivers/net/bonding/bonding.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index 454d6affa06a..4a3fbe307ee8 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -249,6 +249,34 @@ struct bonding { #define bond_slave_get_rtnl(dev) \ ((struct slave *) rtnl_dereference(dev->rx_handler_data)) +/** + * __bond_next_slave - get the next slave after the one provided + * @bond - bonding struct + * @slave - the slave provided + * + * Returns the next slave after the slave provided, first slave if the + * slave provided is the last slave and NULL if slave is not found + */ +static inline struct slave *__bond_next_slave(struct bonding *bond, + struct slave *slave) +{ + struct slave *slave_iter; + struct list_head *iter; + bool found = false; + + netdev_for_each_lower_private(bond->dev, slave_iter, iter) { + if (found) + return slave_iter; + if (slave_iter == slave) + found = true; + } + + if (found) + return bond_first_slave(bond); + + return NULL; +} + /** * Returns NULL if the net_device does not belong to any of the bond's slaves * -- cgit v1.2.3-59-g8ed1b