From 1ddec5d0eec4b79461347cd9eaa880b9e4dd0567 Mon Sep 17 00:00:00 2001 From: Hangbin Liu Date: Wed, 4 Sep 2024 08:34:55 +0800 Subject: bonding: add common function to check ipsec device This patch adds a common function to check the status of IPSec devices. This function will be useful for future implementations, such as IPSec ESN and state offload callbacks. Suggested-by: Nikolay Aleksandrov Reviewed-by: Nikolay Aleksandrov Acked-by: Jay Vosburgh Signed-off-by: Hangbin Liu Signed-off-by: Paolo Abeni --- drivers/net/bonding/bond_main.c | 50 ++++++++++++++++++++++++++++++----------- 1 file changed, 37 insertions(+), 13 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index f13d413ad26c..46f46fea9152 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -418,6 +418,41 @@ static int bond_vlan_rx_kill_vid(struct net_device *bond_dev, /*---------------------------------- XFRM -----------------------------------*/ #ifdef CONFIG_XFRM_OFFLOAD +/** + * bond_ipsec_dev - Get active device for IPsec offload + * @xs: pointer to transformer state struct + * + * Context: caller must hold rcu_read_lock. + * + * Return: the device for ipsec offload, or NULL if not exist. + **/ +static struct net_device *bond_ipsec_dev(struct xfrm_state *xs) +{ + struct net_device *bond_dev = xs->xso.dev; + struct bonding *bond; + struct slave *slave; + + if (!bond_dev) + return NULL; + + bond = netdev_priv(bond_dev); + if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) + return NULL; + + slave = rcu_dereference(bond->curr_active_slave); + if (!slave) + return NULL; + + if (!xs->xso.real_dev) + return NULL; + + if (xs->xso.real_dev != slave->dev) + pr_warn_ratelimited("%s: (slave %s): not same with IPsec offload real dev %s\n", + bond_dev->name, slave->dev->name, xs->xso.real_dev->name); + + return slave->dev; +} + /** * bond_ipsec_add_sa - program device with a security association * @xs: pointer to transformer state struct @@ -640,23 +675,12 @@ out: **/ static bool bond_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *xs) { - struct net_device *bond_dev = xs->xso.dev; struct net_device *real_dev; - struct slave *curr_active; - struct bonding *bond; bool ok = false; - bond = netdev_priv(bond_dev); rcu_read_lock(); - curr_active = rcu_dereference(bond->curr_active_slave); - if (!curr_active) - goto out; - real_dev = curr_active->dev; - - if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) - goto out; - - if (!xs->xso.real_dev) + real_dev = bond_ipsec_dev(xs); + if (!real_dev) goto out; if (!real_dev->xfrmdev_ops || -- cgit v1.2.3