3 files changed, 68 insertions, 7 deletions

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 63d43ef86..d8a7fb21b 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -5333,7 +5333,7 @@ static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
 {
 	int v, ret = 0;
 
-	for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
+	for (v = 0; v < pf->num_alloc_vsi; v++) {
 		if (pf->vsi[v]) {
 			ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
 			if (ret)
@@ -13569,9 +13569,9 @@ int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair)
 		return err;
 
 	i40e_queue_pair_disable_irq(vsi, queue_pair);
+	i40e_queue_pair_toggle_napi(vsi, queue_pair, false /* off */);
 	err = i40e_queue_pair_toggle_rings(vsi, queue_pair, false /* off */);
 	i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
-	i40e_queue_pair_toggle_napi(vsi, queue_pair, false /* off */);
 	i40e_queue_pair_clean_rings(vsi, queue_pair);
 	i40e_queue_pair_reset_stats(vsi, queue_pair);
 
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index c7d761426..ed4be80fe 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -2603,6 +2603,14 @@ static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
 	int aq_ret = 0;
 	int i;
 
+	if (vf->is_disabled_from_host) {
+		aq_ret = -EPERM;
+		dev_info(&pf->pdev->dev,
+			 "Admin has disabled VF %d, will not enable queues\n",
+			 vf->vf_id);
+		goto error_param;
+	}
+
 	if (!test_bit(I40E_VF_STATE_ACTIVE, &vf->vf_states)) {
 		aq_ret = I40E_ERR_PARAM;
 		goto error_param;
@@ -2838,6 +2846,24 @@ error_param:
 				      (u8 *)&stats, sizeof(stats));
 }
 
+/**
+ * i40e_can_vf_change_mac
+ * @vf: pointer to the VF info
+ *
+ * Return true if the VF is allowed to change its MAC filters, false otherwise
+ */
+static bool i40e_can_vf_change_mac(struct i40e_vf *vf)
+{
+	/* If the VF MAC address has been set administratively (via the
+	 * ndo_set_vf_mac command), then deny permission to the VF to
+	 * add/delete unicast MAC addresses, unless the VF is trusted
+	 */
+	if (vf->pf_set_mac && !vf->trusted)
+		return false;
+
+	return true;
+}
+
 #define I40E_MAX_MACVLAN_PER_HW 3072
 #define I40E_MAX_MACVLAN_PER_PF(num_ports) (I40E_MAX_MACVLAN_PER_HW /	\
 	(num_ports))
@@ -2897,8 +2923,8 @@ static inline int i40e_check_vf_permission(struct i40e_vf *vf,
 		 * The VF may request to set the MAC address filter already
 		 * assigned to it so do not return an error in that case.
 		 */
-		if (!test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) &&
-		    !is_multicast_ether_addr(addr) && vf->pf_set_mac &&
+		if (!i40e_can_vf_change_mac(vf) &&
+		    !is_multicast_ether_addr(addr) &&
 		    !ether_addr_equal(addr, vf->default_lan_addr.addr)) {
 			dev_err(&pf->pdev->dev,
 				"VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n");
@@ -3041,19 +3067,29 @@ static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
 			ret = I40E_ERR_INVALID_MAC_ADDR;
 			goto error_param;
 		}
-		if (ether_addr_equal(al->list[i].addr, vf->default_lan_addr.addr))
-			was_unimac_deleted = true;
 	}
 	vsi = pf->vsi[vf->lan_vsi_idx];
 
 	spin_lock_bh(&vsi->mac_filter_hash_lock);
 	/* delete addresses from the list */
-	for (i = 0; i < al->num_elements; i++)
+	for (i = 0; i < al->num_elements; i++) {
+		const u8 *addr = al->list[i].addr;
+
+		/* Allow to delete VF primary MAC only if it was not set
+		 * administratively by PF or if VF is trusted.
+		 */
+		if (ether_addr_equal(addr, vf->default_lan_addr.addr) &&
+		    i40e_can_vf_change_mac(vf))
+			was_unimac_deleted = true;
+		else
+			continue;
+
 		if (i40e_del_mac_filter(vsi, al->list[i].addr)) {
 			ret = I40E_ERR_INVALID_MAC_ADDR;
 			spin_unlock_bh(&vsi->mac_filter_hash_lock);
 			goto error_param;
 		}
+	}
 
 	spin_unlock_bh(&vsi->mac_filter_hash_lock);
 
@@ -4656,9 +4692,12 @@ int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
 	struct i40e_link_status *ls = &pf->hw.phy.link_info;
 	struct virtchnl_pf_event pfe;
 	struct i40e_hw *hw = &pf->hw;
+	struct i40e_vsi *vsi;
+	unsigned long q_map;
 	struct i40e_vf *vf;
 	int abs_vf_id;
 	int ret = 0;
+	int tmp;
 
 	if (test_and_set_bit(__I40E_VIRTCHNL_OP_PENDING, pf->state)) {
 		dev_warn(&pf->pdev->dev, "Unable to configure VFs, other operation is pending.\n");
@@ -4681,17 +4720,38 @@ int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
 	switch (link) {
 	case IFLA_VF_LINK_STATE_AUTO:
 		vf->link_forced = false;
+		vf->is_disabled_from_host = false;
+		/* reset needed to reinit VF resources */
+		i40e_vc_reset_vf(vf, true);
 		i40e_set_vf_link_state(vf, &pfe, ls);
 		break;
 	case IFLA_VF_LINK_STATE_ENABLE:
 		vf->link_forced = true;
 		vf->link_up = true;
+		vf->is_disabled_from_host = false;
+		/* reset needed to reinit VF resources */
+		i40e_vc_reset_vf(vf, true);
 		i40e_set_vf_link_state(vf, &pfe, ls);
 		break;
 	case IFLA_VF_LINK_STATE_DISABLE:
 		vf->link_forced = true;
 		vf->link_up = false;
 		i40e_set_vf_link_state(vf, &pfe, ls);
+
+		vsi = pf->vsi[vf->lan_vsi_idx];
+		q_map = BIT(vsi->num_queue_pairs) - 1;
+
+		vf->is_disabled_from_host = true;
+
+		/* Try to stop both Tx&Rx rings even if one of the calls fails
+		 * to ensure we stop the rings even in case of errors.
+		 * If any of them returns with an error then the first
+		 * error that occurred will be returned.
+		 */
+		tmp = i40e_ctrl_vf_tx_rings(vsi, q_map, false);
+		ret = i40e_ctrl_vf_rx_rings(vsi, q_map, false);
+
+		ret = tmp ? tmp : ret;
 		break;
 	default:
 		ret = -EINVAL;
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h
index bd497cc53..97e9c34d7 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h
@@ -98,6 +98,7 @@ struct i40e_vf {
 	bool link_forced;
 	bool link_up;		/* only valid if VF link is forced */
 	bool spoofchk;
+	bool is_disabled_from_host; /* PF ctrl of VF enable/disable */
 	u16 num_vlan;
 
 	/* ADq related variables */