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bonding: extract the use of real_device into local variable
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Add a local variable for slave->dev, to prepare for the lock change in
the next patch. There is no functionality change.

Fixes: 9a56055 ("bonding: Add struct bond_ipesc to manage SA")
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Jay Vosburgh <jv@jvosburgh.net>
Link: https://patch.msgid.link/20240823031056.110999-3-jianbol@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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@kuba-moo
Jianbo Liu authored and kuba-moo committed Aug 27, 2024
1 parent ec13009 commit 907ed83
Showing 1 changed file with 33 additions and 25 deletions.
58 changes: 33 additions & 25 deletions drivers/net/bonding/bond_main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand All @@ -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;
Expand All @@ -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);
Expand All @@ -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;

Expand All @@ -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);
Expand All @@ -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;
}
}
Expand All @@ -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;
Expand All @@ -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) {
Expand All @@ -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;

Expand All @@ -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);
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