On Fri, 13 Dec 2024 07:18:08 +0000 Hangbin Liu wrote:
On Thu, Dec 12, 2024 at 06:27:34AM -0800, Jakub Kicinski wrote:
On Wed, 11 Dec 2024 07:11:25 +0000 Hangbin Liu wrote:
The first patch fixes the xfrm offload feature during setup active-backup mode. The second patch add a ipsec offload testing.
Looks like the test is too good, is there a fix pending somewhere for the BUG below? We can't merge the test before that:
This should be a regression of 2aeeef906d5a ("bonding: change ipsec_lock from spin lock to mutex"). As in xfrm_state_delete we called spin_lock_bh(&x->lock) for the xfrm state delete.
But I'm not sure if it's proper to release the spin lock in bond code. This seems too specific.
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 7daeab67e7b5..69563bc958ca 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -592,6 +592,7 @@ static void bond_ipsec_del_sa(struct xfrm_state *xs) real_dev->xfrmdev_ops->xdo_dev_state_delete(xs); out: netdev_put(real_dev, &tracker);
- spin_unlock_bh(&xs->lock); mutex_lock(&bond->ipsec_lock); list_for_each_entry(ipsec, &bond->ipsec_list, list) { if (ipsec->xs == xs) {
@@ -601,6 +602,7 @@ static void bond_ipsec_del_sa(struct xfrm_state *xs) } } mutex_unlock(&bond->ipsec_lock);
- spin_lock_bh(&xs->lock);
}
What do you think?
Re-locking doesn't look great, glancing at the code I don't see any obvious better workarounds. Easiest fix would be to don't let the drivers sleep in the callbacks and then we can go back to a spin lock. Maybe nvidia people have better ideas, I'm not familiar with this offload.