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Message-Id: <1378157965-17537-12-git-send-email-vfalico@redhat.com>
Date: Mon, 2 Sep 2013 23:39:15 +0200
From: Veaceslav Falico <vfalico@...hat.com>
To: netdev@...r.kernel.org
Cc: Veaceslav Falico <vfalico@...hat.com>,
Jay Vosburgh <fubar@...ibm.com>,
Andy Gospodarek <andy@...yhouse.net>
Subject: [PATCH RFC net-next 11/21] bonding: remove bond_for_each_slave_reverse()
We only use it in rollback scenarios and can easily use the standart
bond_for_each_dev() instead.
CC: Jay Vosburgh <fubar@...ibm.com>
CC: Andy Gospodarek <andy@...yhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@...hat.com>
---
drivers/net/bonding/bond_alb.c | 14 ++++++++------
drivers/net/bonding/bond_main.c | 34 ++++++++++++++++++++++------------
drivers/net/bonding/bonding.h | 10 ----------
3 files changed, 30 insertions(+), 28 deletions(-)
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index a277465..bda976f 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -1248,9 +1248,9 @@ static int alb_handle_addr_collision_on_attach(struct bonding *bond, struct slav
*/
static int alb_set_mac_address(struct bonding *bond, void *addr)
{
- char tmp_addr[ETH_ALEN];
- struct slave *slave;
+ struct slave *slave, *rollback_slave;
struct sockaddr sa;
+ char tmp_addr[ETH_ALEN];
int res;
if (bond->alb_info.rlb_enabled)
@@ -1276,10 +1276,12 @@ unwind:
sa.sa_family = bond->dev->type;
/* unwind from head to the slave that failed */
- bond_for_each_slave_continue_reverse(bond, slave) {
- memcpy(tmp_addr, slave->dev->dev_addr, ETH_ALEN);
- dev_set_mac_address(slave->dev, &sa);
- memcpy(slave->dev->dev_addr, tmp_addr, ETH_ALEN);
+ bond_for_each_slave(bond, rollback_slave) {
+ if (rollback_slave == slave)
+ break;
+ memcpy(tmp_addr, rollback_slave->dev->dev_addr, ETH_ALEN);
+ dev_set_mac_address(rollback_slave->dev, &sa);
+ memcpy(rollback_slave->dev->dev_addr, tmp_addr, ETH_ALEN);
}
return res;
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 427d943..0a4aa0d 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -332,7 +332,7 @@ static int bond_vlan_rx_add_vid(struct net_device *bond_dev,
__be16 proto, u16 vid)
{
struct bonding *bond = netdev_priv(bond_dev);
- struct slave *slave;
+ struct slave *slave, *rollback_slave;
int res;
bond_for_each_slave(bond, slave) {
@@ -344,9 +344,13 @@ static int bond_vlan_rx_add_vid(struct net_device *bond_dev,
return 0;
unwind:
- /* unwind from the slave that failed */
- bond_for_each_slave_continue_reverse(bond, slave)
- vlan_vid_del(slave->dev, proto, vid);
+ /* unwind to the slave that failed */
+ bond_for_each_slave(bond, rollback_slave) {
+ if (rollback_slave == slave)
+ break;
+
+ vlan_vid_del(rollback_slave->dev, proto, vid);
+ }
return res;
}
@@ -3477,7 +3481,7 @@ static int bond_neigh_setup(struct net_device *dev,
static int bond_change_mtu(struct net_device *bond_dev, int new_mtu)
{
struct bonding *bond = netdev_priv(bond_dev);
- struct slave *slave;
+ struct slave *slave, *rollback_slave;
int res = 0;
pr_debug("bond=%p, name=%s, new_mtu=%d\n", bond,
@@ -3526,13 +3530,16 @@ static int bond_change_mtu(struct net_device *bond_dev, int new_mtu)
unwind:
/* unwind from head to the slave that failed */
- bond_for_each_slave_continue_reverse(bond, slave) {
+ bond_for_each_slave(bond, rollback_slave) {
int tmp_res;
- tmp_res = dev_set_mtu(slave->dev, bond_dev->mtu);
+ if (rollback_slave == slave);
+ break;
+
+ tmp_res = dev_set_mtu(rollback_slave->dev, bond_dev->mtu);
if (tmp_res) {
pr_debug("unwind err %d dev %s\n",
- tmp_res, slave->dev->name);
+ tmp_res, rollback_slave->dev->name);
}
}
@@ -3549,8 +3556,8 @@ unwind:
static int bond_set_mac_address(struct net_device *bond_dev, void *addr)
{
struct bonding *bond = netdev_priv(bond_dev);
+ struct slave *slave, *rollback_slave;
struct sockaddr *sa = addr, tmp_sa;
- struct slave *slave;
int res = 0;
if (bond->params.mode == BOND_MODE_ALB)
@@ -3616,13 +3623,16 @@ unwind:
tmp_sa.sa_family = bond_dev->type;
/* unwind from head to the slave that failed */
- bond_for_each_slave_continue_reverse(bond, slave) {
+ bond_for_each_slave(bond, rollback_slave) {
int tmp_res;
- tmp_res = dev_set_mac_address(slave->dev, &tmp_sa);
+ if (rollback_slave == slave)
+ break;
+
+ tmp_res = dev_set_mac_address(rollback_slave->dev, &tmp_sa);
if (tmp_res) {
pr_debug("unwind err %d dev %s\n",
- tmp_res, slave->dev->name);
+ tmp_res, rollback_slave->dev->name);
}
}
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 7cb60f9..8c11f96 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -122,16 +122,6 @@
#define bond_for_each_slave_rcu(bond, pos) \
list_for_each_entry_rcu(pos, &(bond)->slave_list, list)
-/**
- * bond_for_each_slave_reverse - iterate in reverse from a given position
- * @bond: the bond holding this list
- * @pos: slave to continue from
- *
- * Caller must hold bond->lock
- */
-#define bond_for_each_slave_continue_reverse(bond, pos) \
- list_for_each_entry_continue_reverse(pos, &(bond)->slave_list, list)
-
#ifdef CONFIG_NET_POLL_CONTROLLER
extern atomic_t netpoll_block_tx;
--
1.8.4
--
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