i40e: Limit the number of MAC and VLAN addresses that can be added for VFs

Orabug: 23176970

If the VF is privileged/trusted it can do as it may please including
but not limited to hogging resources and playing unfair.
But if the VF is not privileged/trusted it still can add some number
(8) of MAC and VLAN addresses.
Other restrictions with respect to Port VLAN and normal VLAN still apply
to not privileged/trusted VF.

Change-Id: I3a9529201b184c8873e1ad2e300aff468c9e6296
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 5f527ba962e277963b08f4c7f12fbeeac3f34e3c)
Signed-off-by: Brian Maly <brian.maly@oracle.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 30f01b323dc09de5964d45dd3af538da8c031027..a8a65e03061116a91dc3cff7c7f3314cce58f4f6 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -1933,6 +1933,8 @@ static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
                        ret = I40E_ERR_PARAM;
                        spin_unlock_bh(&vsi->mac_filter_list_lock);
                        goto error_param;
+               } else {
+                       vf->num_mac++;
                }
        }
        spin_unlock_bh(&vsi->mac_filter_list_lock);
@@ -1991,6 +1993,8 @@ static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
                        ret = I40E_ERR_INVALID_MAC_ADDR;
                        spin_unlock_bh(&vsi->mac_filter_list_lock);
                        goto error_param;
+               } else {
+                       vf->num_mac--;
                }
 
        spin_unlock_bh(&vsi->mac_filter_list_lock);
@@ -2032,7 +2036,6 @@ static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
                goto error_param;
        }
        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
-           !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
            !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
@@ -2056,6 +2059,8 @@ static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
        for (i = 0; i < vfl->num_elements; i++) {
                /* add new VLAN filter */
                int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
+               if (!ret)
+                       vf->num_vlan++;
 
                if (test_bit(I40E_VF_STAT_UC_PROMISC, &vf->vf_states))
                        i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,
@@ -2098,7 +2103,6 @@ static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
        int i;
 
        if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
-           !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
            !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
                aq_ret = I40E_ERR_PARAM;
                goto error_param;
@@ -2119,6 +2123,8 @@ static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
 
        for (i = 0; i < vfl->num_elements; i++) {
                int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
+               if (!ret)
+                       vf->num_vlan--;
 
                if (test_bit(I40E_VF_STAT_UC_PROMISC, &vf->vf_states))
                        i40e_aq_set_vsi_uc_promisc_on_vlan(&pf->hw, vsi->seid,