Merge tag 'net-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from can.

  Still no major regressions, most of the changes are still due to data
  races fixes, plus the usual bunch of drivers fixes.

  Previous releases - regressions:

   - tcp/udp: make early_demux back namespacified.

   - dsa: fix issues with vlan_filtering_is_global

  Previous releases - always broken:

   - ip: fix data-races around ipv4_net_table (round 2, 3 & 4)

   - amt: fix validation and synchronization bugs

   - can: fix detection of mcp251863

   - eth: iavf: fix handling of dummy receive descriptors

   - eth: lan966x: fix issues with MAC table

   - eth: stmmac: dwmac-mediatek: fix clock issue

  Misc:

   - dsa: update documentation"

* tag 'net-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (107 commits)
  mlxsw: spectrum_router: Fix IPv4 nexthop gateway indication
  net/sched: cls_api: Fix flow action initialization
  tcp: Fix data-races around sysctl_tcp_max_reordering.
  tcp: Fix a data-race around sysctl_tcp_abort_on_overflow.
  tcp: Fix a data-race around sysctl_tcp_rfc1337.
  tcp: Fix a data-race around sysctl_tcp_stdurg.
  tcp: Fix a data-race around sysctl_tcp_retrans_collapse.
  tcp: Fix data-races around sysctl_tcp_slow_start_after_idle.
  tcp: Fix a data-race around sysctl_tcp_thin_linear_timeouts.
  tcp: Fix data-races around sysctl_tcp_recovery.
  tcp: Fix a data-race around sysctl_tcp_early_retrans.
  tcp: Fix data-races around sysctl knobs related to SYN option.
  udp: Fix a data-race around sysctl_udp_l3mdev_accept.
  ip: Fix data-races around sysctl_ip_prot_sock.
  ipv4: Fix data-races around sysctl_fib_multipath_hash_fields.
  ipv4: Fix data-races around sysctl_fib_multipath_hash_policy.
  ipv4: Fix a data-race around sysctl_fib_multipath_use_neigh.
  can: rcar_canfd: Add missing of_node_put() in rcar_canfd_probe()
  can: mcp251xfd: fix detection of mcp251863
  Documentation: fix udp_wmem_min in ip-sysctl.rst
  ...

1 files changed, 63 insertions, 2 deletions

diff --git a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
index 782450d5c12f..1603e99bae4a 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
@@ -627,6 +627,33 @@ static void iavf_mac_add_reject(struct iavf_adapter *adapter)
 }
 
 /**
+ * iavf_vlan_add_reject
+ * @adapter: adapter structure
+ *
+ * Remove VLAN filters from list based on PF response.
+ **/
+static void iavf_vlan_add_reject(struct iavf_adapter *adapter)
+{
+	struct iavf_vlan_filter *f, *ftmp;
+
+	spin_lock_bh(&adapter->mac_vlan_list_lock);
+	list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
+		if (f->is_new_vlan) {
+			if (f->vlan.tpid == ETH_P_8021Q)
+				clear_bit(f->vlan.vid,
+					  adapter->vsi.active_cvlans);
+			else
+				clear_bit(f->vlan.vid,
+					  adapter->vsi.active_svlans);
+
+			list_del(&f->list);
+			kfree(f);
+		}
+	}
+	spin_unlock_bh(&adapter->mac_vlan_list_lock);
+}
+
+/**
  * iavf_add_vlans
  * @adapter: adapter structure
  *
@@ -683,6 +710,7 @@ void iavf_add_vlans(struct iavf_adapter *adapter)
 				vvfl->vlan_id[i] = f->vlan.vid;
 				i++;
 				f->add = false;
+				f->is_new_vlan = true;
 				if (i == count)
 					break;
 			}
@@ -695,10 +723,18 @@ void iavf_add_vlans(struct iavf_adapter *adapter)
 		iavf_send_pf_msg(adapter, VIRTCHNL_OP_ADD_VLAN, (u8 *)vvfl, len);
 		kfree(vvfl);
 	} else {
+		u16 max_vlans = adapter->vlan_v2_caps.filtering.max_filters;
+		u16 current_vlans = iavf_get_num_vlans_added(adapter);
 		struct virtchnl_vlan_filter_list_v2 *vvfl_v2;
 
 		adapter->current_op = VIRTCHNL_OP_ADD_VLAN_V2;
 
+		if ((count + current_vlans) > max_vlans &&
+		    current_vlans < max_vlans) {
+			count = max_vlans - iavf_get_num_vlans_added(adapter);
+			more = true;
+		}
+
 		len = sizeof(*vvfl_v2) + ((count - 1) *
 					  sizeof(struct virtchnl_vlan_filter));
 		if (len > IAVF_MAX_AQ_BUF_SIZE) {
@@ -725,6 +761,9 @@ void iavf_add_vlans(struct iavf_adapter *adapter)
 					&adapter->vlan_v2_caps.filtering.filtering_support;
 				struct virtchnl_vlan *vlan;
 
+				if (i == count)
+					break;
+
 				/* give priority over outer if it's enabled */
 				if (filtering_support->outer)
 					vlan = &vvfl_v2->filters[i].outer;
@@ -736,8 +775,7 @@ void iavf_add_vlans(struct iavf_adapter *adapter)
 
 				i++;
 				f->add = false;
-				if (i == count)
-					break;
+				f->is_new_vlan = true;
 			}
 		}
 
@@ -2080,6 +2118,11 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter,
 			 */
 			iavf_netdev_features_vlan_strip_set(netdev, true);
 			break;
+		case VIRTCHNL_OP_ADD_VLAN_V2:
+			iavf_vlan_add_reject(adapter);
+			dev_warn(&adapter->pdev->dev, "Failed to add VLAN filter, error %s\n",
+				 iavf_stat_str(&adapter->hw, v_retval));
+			break;
 		default:
 			dev_err(&adapter->pdev->dev, "PF returned error %d (%s) to our request %d\n",
 				v_retval, iavf_stat_str(&adapter->hw, v_retval),
@@ -2332,6 +2375,24 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter,
 		spin_unlock_bh(&adapter->adv_rss_lock);
 		}
 		break;
+	case VIRTCHNL_OP_ADD_VLAN_V2: {
+		struct iavf_vlan_filter *f;
+
+		spin_lock_bh(&adapter->mac_vlan_list_lock);
+		list_for_each_entry(f, &adapter->vlan_filter_list, list) {
+			if (f->is_new_vlan) {
+				f->is_new_vlan = false;
+				if (f->vlan.tpid == ETH_P_8021Q)
+					set_bit(f->vlan.vid,
+						adapter->vsi.active_cvlans);
+				else
+					set_bit(f->vlan.vid,
+						adapter->vsi.active_svlans);
+			}
+		}
+		spin_unlock_bh(&adapter->mac_vlan_list_lock);
+		}
+		break;
 	case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING:
 		/* PF enabled vlan strip on this VF.
 		 * Update netdev->features if needed to be in sync with ethtool.