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Message-ID: <20240821090458.10813-3-jianbol@nvidia.com>
Date: Wed, 21 Aug 2024 12:04:57 +0300
From: Jianbo Liu <jianbol@...dia.com>
To: <netdev@...r.kernel.org>, <davem@...emloft.net>, <kuba@...nel.org>,
<pabeni@...hat.com>, <edumazet@...gle.com>, <jv@...sburgh.net>,
<andy@...yhouse.net>
CC: <saeedm@...dia.com>, <gal@...dia.com>, <leonro@...dia.com>,
<liuhangbin@...il.com>, <tariqt@...dia.com>, Jianbo Liu <jianbol@...dia.com>,
Cosmin Ratiu <cratiu@...dia.com>
Subject: [PATCH net V5 2/3] bonding: extract the use of real_device into local variable
Add a local variable for slave->dev, to prepare for the lock change in
the next patch. There is no functionality change.
Fixes: 9a5605505d9c ("bonding: Add struct bond_ipesc to manage SA")
Signed-off-by: Jianbo Liu <jianbol@...dia.com>
Reviewed-by: Cosmin Ratiu <cratiu@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
Reviewed-by: Hangbin Liu <liuhangbin@...il.com>
---
drivers/net/bonding/bond_main.c | 58 +++++++++++++++++++--------------
1 file changed, 33 insertions(+), 25 deletions(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index f191a48c7766..0d1129eaf47b 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -427,6 +427,7 @@ static int bond_ipsec_add_sa(struct xfrm_state *xs,
struct netlink_ext_ack *extack)
{
struct net_device *bond_dev = xs->xso.dev;
+ struct net_device *real_dev;
struct bond_ipsec *ipsec;
struct bonding *bond;
struct slave *slave;
@@ -443,9 +444,10 @@ static int bond_ipsec_add_sa(struct xfrm_state *xs,
return -ENODEV;
}
- if (!slave->dev->xfrmdev_ops ||
- !slave->dev->xfrmdev_ops->xdo_dev_state_add ||
- netif_is_bond_master(slave->dev)) {
+ real_dev = slave->dev;
+ if (!real_dev->xfrmdev_ops ||
+ !real_dev->xfrmdev_ops->xdo_dev_state_add ||
+ netif_is_bond_master(real_dev)) {
NL_SET_ERR_MSG_MOD(extack, "Slave does not support ipsec offload");
rcu_read_unlock();
return -EINVAL;
@@ -456,9 +458,9 @@ static int bond_ipsec_add_sa(struct xfrm_state *xs,
rcu_read_unlock();
return -ENOMEM;
}
- xs->xso.real_dev = slave->dev;
- err = slave->dev->xfrmdev_ops->xdo_dev_state_add(xs, extack);
+ xs->xso.real_dev = real_dev;
+ err = real_dev->xfrmdev_ops->xdo_dev_state_add(xs, extack);
if (!err) {
ipsec->xs = xs;
INIT_LIST_HEAD(&ipsec->list);
@@ -475,6 +477,7 @@ static int bond_ipsec_add_sa(struct xfrm_state *xs,
static void bond_ipsec_add_sa_all(struct bonding *bond)
{
struct net_device *bond_dev = bond->dev;
+ struct net_device *real_dev;
struct bond_ipsec *ipsec;
struct slave *slave;
@@ -483,12 +486,13 @@ static void bond_ipsec_add_sa_all(struct bonding *bond)
if (!slave)
goto out;
- if (!slave->dev->xfrmdev_ops ||
- !slave->dev->xfrmdev_ops->xdo_dev_state_add ||
- netif_is_bond_master(slave->dev)) {
+ real_dev = slave->dev;
+ if (!real_dev->xfrmdev_ops ||
+ !real_dev->xfrmdev_ops->xdo_dev_state_add ||
+ netif_is_bond_master(real_dev)) {
spin_lock_bh(&bond->ipsec_lock);
if (!list_empty(&bond->ipsec_list))
- slave_warn(bond_dev, slave->dev,
+ slave_warn(bond_dev, real_dev,
"%s: no slave xdo_dev_state_add\n",
__func__);
spin_unlock_bh(&bond->ipsec_lock);
@@ -497,9 +501,9 @@ static void bond_ipsec_add_sa_all(struct bonding *bond)
spin_lock_bh(&bond->ipsec_lock);
list_for_each_entry(ipsec, &bond->ipsec_list, list) {
- ipsec->xs->xso.real_dev = slave->dev;
- if (slave->dev->xfrmdev_ops->xdo_dev_state_add(ipsec->xs, NULL)) {
- slave_warn(bond_dev, slave->dev, "%s: failed to add SA\n", __func__);
+ ipsec->xs->xso.real_dev = real_dev;
+ if (real_dev->xfrmdev_ops->xdo_dev_state_add(ipsec->xs, NULL)) {
+ slave_warn(bond_dev, real_dev, "%s: failed to add SA\n", __func__);
ipsec->xs->xso.real_dev = NULL;
}
}
@@ -515,6 +519,7 @@ static void bond_ipsec_add_sa_all(struct bonding *bond)
static void bond_ipsec_del_sa(struct xfrm_state *xs)
{
struct net_device *bond_dev = xs->xso.dev;
+ struct net_device *real_dev;
struct bond_ipsec *ipsec;
struct bonding *bond;
struct slave *slave;
@@ -532,16 +537,17 @@ static void bond_ipsec_del_sa(struct xfrm_state *xs)
if (!xs->xso.real_dev)
goto out;
- WARN_ON(xs->xso.real_dev != slave->dev);
+ real_dev = slave->dev;
+ WARN_ON(xs->xso.real_dev != real_dev);
- if (!slave->dev->xfrmdev_ops ||
- !slave->dev->xfrmdev_ops->xdo_dev_state_delete ||
- netif_is_bond_master(slave->dev)) {
- slave_warn(bond_dev, slave->dev, "%s: no slave xdo_dev_state_delete\n", __func__);
+ if (!real_dev->xfrmdev_ops ||
+ !real_dev->xfrmdev_ops->xdo_dev_state_delete ||
+ netif_is_bond_master(real_dev)) {
+ slave_warn(bond_dev, real_dev, "%s: no slave xdo_dev_state_delete\n", __func__);
goto out;
}
- slave->dev->xfrmdev_ops->xdo_dev_state_delete(xs);
+ real_dev->xfrmdev_ops->xdo_dev_state_delete(xs);
out:
spin_lock_bh(&bond->ipsec_lock);
list_for_each_entry(ipsec, &bond->ipsec_list, list) {
@@ -558,6 +564,7 @@ static void bond_ipsec_del_sa(struct xfrm_state *xs)
static void bond_ipsec_del_sa_all(struct bonding *bond)
{
struct net_device *bond_dev = bond->dev;
+ struct net_device *real_dev;
struct bond_ipsec *ipsec;
struct slave *slave;
@@ -568,21 +575,22 @@ static void bond_ipsec_del_sa_all(struct bonding *bond)
return;
}
+ real_dev = slave->dev;
spin_lock_bh(&bond->ipsec_lock);
list_for_each_entry(ipsec, &bond->ipsec_list, list) {
if (!ipsec->xs->xso.real_dev)
continue;
- if (!slave->dev->xfrmdev_ops ||
- !slave->dev->xfrmdev_ops->xdo_dev_state_delete ||
- netif_is_bond_master(slave->dev)) {
- slave_warn(bond_dev, slave->dev,
+ if (!real_dev->xfrmdev_ops ||
+ !real_dev->xfrmdev_ops->xdo_dev_state_delete ||
+ netif_is_bond_master(real_dev)) {
+ slave_warn(bond_dev, real_dev,
"%s: no slave xdo_dev_state_delete\n",
__func__);
} else {
- slave->dev->xfrmdev_ops->xdo_dev_state_delete(ipsec->xs);
- if (slave->dev->xfrmdev_ops->xdo_dev_state_free)
- slave->dev->xfrmdev_ops->xdo_dev_state_free(ipsec->xs);
+ real_dev->xfrmdev_ops->xdo_dev_state_delete(ipsec->xs);
+ if (real_dev->xfrmdev_ops->xdo_dev_state_free)
+ real_dev->xfrmdev_ops->xdo_dev_state_free(ipsec->xs);
}
}
spin_unlock_bh(&bond->ipsec_lock);
--
2.21.0
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