net/mlx5e: Allow MAC invalidation while spoofchk is ON

BugLink: https://bugs.launchpad.net/bugs/1837664
[ Upstream commit 9d2cbdc5d334967c35b5f58c7bf3208e17325647 ]

Prior to this patch the driver prohibited spoof checking on invalid MAC.
Now the user can set this configuration if it wishes to.

This is required since libvirt might invalidate the VF Mac by setting it
to zero, while spoofcheck is ON.

Fixes: 1ab2068a4c66 ("net/mlx5: Implement vports admin state backup/restore")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 608a71350e5b4be1b4ea5a77ccea5a1a976e390c..00585a368ece6fcce40e19906ae340c46612b28d 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1126,13 +1126,6 @@ static int esw_vport_ingress_config(struct mlx5_eswitch *esw,
        int err = 0;
        u8 *smac_v;
 
-       if (vport->info.spoofchk && !is_valid_ether_addr(vport->info.mac)) {
-               mlx5_core_warn(esw->dev,
-                              "vport[%d] configure ingress rules failed, illegal mac with spoofchk\n",
-                              vport->vport);
-               return -EPERM;
-       }
-
        esw_vport_cleanup_ingress_rules(esw, vport);
 
        if (!vport->info.vlan && !vport->info.qos && !vport->info.spoofchk) {
@@ -1734,13 +1727,10 @@ int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
        mutex_lock(&esw->state_lock);
        evport = &esw->vports[vport];
 
-       if (evport->info.spoofchk && !is_valid_ether_addr(mac)) {
+       if (evport->info.spoofchk && !is_valid_ether_addr(mac))
                mlx5_core_warn(esw->dev,
-                              "MAC invalidation is not allowed when spoofchk is on, vport(%d)\n",
+                              "Set invalid MAC while spoofchk is on, vport(%d)\n",
                               vport);
-               err = -EPERM;
-               goto unlock;
-       }
 
        err = mlx5_modify_nic_vport_mac_address(esw->dev, vport, mac);
        if (err) {
@@ -1886,6 +1876,10 @@ int mlx5_eswitch_set_vport_spoofchk(struct mlx5_eswitch *esw,
        evport = &esw->vports[vport];
        pschk = evport->info.spoofchk;
        evport->info.spoofchk = spoofchk;
+       if (pschk && !is_valid_ether_addr(evport->info.mac))
+               mlx5_core_warn(esw->dev,
+                              "Spoofchk in set while MAC is invalid, vport(%d)\n",
+                              evport->vport);
        if (evport->enabled && esw->mode == SRIOV_LEGACY)
                err = esw_vport_ingress_config(esw, evport);
        if (err)