net/mlx5e: Allow MAC invalidation while spoofchk is ON

[ 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>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 5d6eab19a9d885a324fdc13c1221bdc6b5d2f92a..da9246f6c31e1035a3ef71e34cc38595ae7705d5 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1216,14 +1216,6 @@ 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) {
@@ -1709,13 +1701,10 @@ 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) {
@@ -1859,6 +1848,10 @@ 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)