netdev - [PATCH v2 net-next 1/4] bonding: get rid of bond_option_active_slave

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Date:	Tue, 15 Jul 2014 06:56:53 -0700
From:	Eric Dumazet <edumazet@...gle.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, Jay Vosburgh <j.vosburgh@...il.com>,
	Veaceslav Falico <vfalico@...il.com>,
	Andy Gospodarek <andy@...yhouse.net>,
	Nikolay Aleksandrov <nikolay@...hat.com>,
	Mahesh Bandewar <maheshb@...gle.com>,
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH v2 net-next 1/4] bonding: get rid of bond_option_active_slave_get()

Only keep bond_option_active_slave_get_rcu() helper.

bond_fill_info() uses a new bond_option_active_slave_get_ifindex()
helper.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Acked-by: Veaceslav Falico <vfalico@...il.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@...hat.com>
---
 drivers/net/bonding/bond_netlink.c | 21 ++++++++++++++++-----
 drivers/net/bonding/bond_options.c |  5 -----
 drivers/net/bonding/bonding.h      |  1 -
 3 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 5ab3c1847e67..4d97e23eb497 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -398,20 +398,31 @@ static size_t bond_get_size(const struct net_device *bond_dev)
 		0;
 }
 
+static int bond_option_active_slave_get_ifindex(struct bonding *bond)
+{
+	const struct net_device *slave;
+	int ifindex;
+
+	rcu_read_lock();
+	slave = bond_option_active_slave_get_rcu(bond);
+	ifindex = slave ? slave->ifindex : 0;
+	rcu_read_unlock();
+	return ifindex;
+}
+
 static int bond_fill_info(struct sk_buff *skb,
 			  const struct net_device *bond_dev)
 {
 	struct bonding *bond = netdev_priv(bond_dev);
-	struct net_device *slave_dev = bond_option_active_slave_get(bond);
-	struct nlattr *targets;
 	unsigned int packets_per_slave;
-	int i, targets_added;
+	int ifindex, i, targets_added;
+	struct nlattr *targets;
 
 	if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
 		goto nla_put_failure;
 
-	if (slave_dev &&
-	    nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, slave_dev->ifindex))
+	ifindex = bond_option_active_slave_get_ifindex(bond);
+	if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, ifindex))
 		goto nla_put_failure;
 
 	if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index 540e0167bf24..b26271fd7b09 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -704,11 +704,6 @@ struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond)
 	return __bond_option_active_slave_get(bond, slave);
 }
 
-struct net_device *bond_option_active_slave_get(struct bonding *bond)
-{
-	return __bond_option_active_slave_get(bond, bond->curr_active_slave);
-}
-
 static int bond_option_active_slave_set(struct bonding *bond,
 					const struct bond_opt_value *newval)
 {
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 0b4d9cde0b05..713e2a99c661 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -514,7 +514,6 @@ unsigned int bond_get_num_tx_queues(void);
 int bond_netlink_init(void);
 void bond_netlink_fini(void);
 struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond);
-struct net_device *bond_option_active_slave_get(struct bonding *bond);
 const char *bond_slave_link_status(s8 link);
 bool bond_verify_device_path(struct net_device *start_dev,
 			     struct net_device *end_dev,
-- 
2.0.0.526.g5318336

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