net: hns3: optimize the filter table entries handling when resetting

Currently, the PF driver removes all (including its VFs') MAC/VLAN
flow director table entries when resetting, and restores them after
reset completed.

In fact, the hardware will clear all table entries only in IMP
reset and global reset. So driver only needs to restore the table
entries in these cases, and needs do nothing when PF reset, FLR
or other function level reset.

This patch optimizes it by removing unnecessary table entries clear
and restoring handling in the reset flow, and doing the restoring
after reset completed.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 33 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 6b9535c17647..c79d6a391105 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2102,7 +2102,6 @@ static int hns3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	ae_dev->pdev = pdev;
 	ae_dev->flag = ent->driver_data;
-	ae_dev->reset_type = HNAE3_NONE_RESET;
 	hns3_get_dev_capability(pdev, ae_dev);
 	pci_set_drvdata(pdev, ae_dev);
 
@@ -3936,17 +3935,6 @@ static void hns3_uninit_phy(struct net_device *netdev)
 		h->ae_algo->ops->mac_disconnect_phy(h);
 }
 
-static int hns3_restore_fd_rules(struct net_device *netdev)
-{
-	struct hnae3_handle *h = hns3_get_handle(netdev);
-	int ret = 0;
-
-	if (h->ae_algo->ops->restore_fd_rules)
-		ret = h->ae_algo->ops->restore_fd_rules(h);
-
-	return ret;
-}
-
 static void hns3_del_all_fd_rules(struct net_device *netdev, bool clear_list)
 {
 	struct hnae3_handle *h = hns3_get_handle(netdev);
@@ -4346,7 +4334,6 @@ static void hns3_restore_coal(struct hns3_nic_priv *priv)
 
 static int hns3_reset_notify_down_enet(struct hnae3_handle *handle)
 {
-	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(handle->pdev);
 	struct hnae3_knic_private_info *kinfo = &handle->kinfo;
 	struct net_device *ndev = kinfo->netdev;
 	struct hns3_nic_priv *priv = netdev_priv(ndev);
@@ -4354,13 +4341,6 @@ static int hns3_reset_notify_down_enet(struct hnae3_handle *handle)
 	if (test_and_set_bit(HNS3_NIC_STATE_RESETTING, &priv->state))
 		return 0;
 
-	/* it is cumbersome for hardware to pick-and-choose entries for deletion
-	 * from table space. Hence, for function reset software intervention is
-	 * required to delete the entries
-	 */
-	if (hns3_dev_ongoing_func_reset(ae_dev))
-		hns3_del_all_fd_rules(ndev, false);
-
 	if (!netif_running(ndev))
 		return 0;
 
@@ -4455,16 +4435,6 @@ err_put_ring:
 	return ret;
 }
 
-static int hns3_reset_notify_restore_enet(struct hnae3_handle *handle)
-{
-	struct net_device *netdev = handle->kinfo.netdev;
-
-	if (handle->ae_algo->ops->restore_vlan_table)
-		handle->ae_algo->ops->restore_vlan_table(handle);
-
-	return hns3_restore_fd_rules(netdev);
-}
-
 static int hns3_reset_notify_uninit_enet(struct hnae3_handle *handle)
 {
 	struct net_device *netdev = handle->kinfo.netdev;
@@ -4514,9 +4484,6 @@ static int hns3_reset_notify(struct hnae3_handle *handle,
 	case HNAE3_UNINIT_CLIENT:
 		ret = hns3_reset_notify_uninit_enet(handle);
 		break;
-	case HNAE3_RESTORE_CLIENT:
-		ret = hns3_reset_notify_restore_enet(handle);
-		break;
 	default:
 		break;
 	}