[PATCH 2/2] i40e: Fix devlink port unregistering

From: Ivan Vecera
Date: Tue Oct 24 2023 - 08:43:46 EST


Ensure that devlink port is unregistered after unregistering
of net device.

Reproducer:
[root@host ~]# rmmod i40e
[ 4742.939386] i40e 0000:02:00.1: i40e_ptp_stop: removed PHC on enp2s0f1np1
[ 4743.059269] ------------[ cut here ]------------
[ 4743.063900] WARNING: CPU: 21 PID: 10766 at net/devlink/port.c:1078 devl_port_unregister+0x69/0x80
...

Fixes: 9e479d64dc58 ("i40e: Add initial devlink support")
Signed-off-by: Ivan Vecera <ivecera@xxxxxxxxxx>
---
drivers/net/ethernet/intel/i40e/i40e_main.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index df058540d277..3f396c100835 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -14181,8 +14181,7 @@ int i40e_vsi_release(struct i40e_vsi *vsi)
}
set_bit(__I40E_VSI_RELEASING, vsi->state);
uplink_seid = vsi->uplink_seid;
- if (vsi->type == I40E_VSI_MAIN)
- i40e_devlink_destroy_port(pf);
+
if (vsi->type != I40E_VSI_SRIOV) {
if (vsi->netdev_registered) {
vsi->netdev_registered = false;
@@ -14196,6 +14195,9 @@ int i40e_vsi_release(struct i40e_vsi *vsi)
i40e_vsi_disable_irq(vsi);
}

+ if (vsi->type == I40E_VSI_MAIN)
+ i40e_devlink_destroy_port(pf);
+
spin_lock_bh(&vsi->mac_filter_hash_lock);

/* clear the sync flag on all filters */
@@ -14370,14 +14372,14 @@ static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)

err_rings:
i40e_vsi_free_q_vectors(vsi);
- if (vsi->type == I40E_VSI_MAIN)
- i40e_devlink_destroy_port(pf);
if (vsi->netdev_registered) {
vsi->netdev_registered = false;
unregister_netdev(vsi->netdev);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
+ if (vsi->type == I40E_VSI_MAIN)
+ i40e_devlink_destroy_port(pf);
i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
err_vsi:
i40e_vsi_clear(vsi);
--
2.41.0