From b3bd1f5e503716e09610e49bdccc36ed9356d27c Mon Sep 17 00:00:00 2001
From: Taehee Yoo <ap420073@gmail.com>
Date: Mon, 5 Jul 2021 15:38:11 +0000
Subject: [PATCH] bonding: disallow setting nested bonding + ipsec offload
[ Upstream commit b121693381b112b78c076dea171ee113e237c0e4 ]
bonding interface can be nested and it supports ipsec offload.
So, it allows setting the nested bonding + ipsec scenario.
But code does not support this scenario.
So, it should be disallowed.
interface graph:
bond2
|
bond1
|
eth0
The nested bonding + ipsec offload may not a real usecase.
So, disallowing this scenario is fine.
Fixes: 18cb261afd7b ("bonding: support hardware encryption offload to slaves")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/bonding/bond_main.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 952796fb5f1a..3555798879f2 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -403,8 +403,9 @@ static int bond_ipsec_add_sa(struct xfrm_state *xs)
xs->xso.real_dev = slave->dev;
bond->xs = xs;
- if (!(slave->dev->xfrmdev_ops
- && slave->dev->xfrmdev_ops->xdo_dev_state_add)) {
+ if (!slave->dev->xfrmdev_ops ||
+ !slave->dev->xfrmdev_ops->xdo_dev_state_add ||
+ netif_is_bond_master(slave->dev)) {
slave_warn(bond_dev, slave->dev, "Slave does not support ipsec offload\n");
rcu_read_unlock();
return -EINVAL;
@@ -437,8 +438,9 @@ static void bond_ipsec_del_sa(struct xfrm_state *xs)
xs->xso.real_dev = slave->dev;
- if (!(slave->dev->xfrmdev_ops
- && slave->dev->xfrmdev_ops->xdo_dev_state_delete)) {
+ 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__);
goto out;
}
@@ -463,8 +465,9 @@ static bool bond_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *xs)
if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP)
return true;
- if (!(slave_dev->xfrmdev_ops
- && slave_dev->xfrmdev_ops->xdo_dev_offload_ok)) {
+ if (!slave_dev->xfrmdev_ops ||
+ !slave_dev->xfrmdev_ops->xdo_dev_offload_ok ||
+ netif_is_bond_master(slave_dev)) {
slave_warn(bond_dev, slave_dev, "%s: no slave xdo_dev_offload_ok\n", __func__);
return false;
}