From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next v2 16/19] i40e: delete filter after adding its replacement when converting Date: Wed, 7 Dec 2016 14:19:15 -0800 Message-ID: <20161207221918.57932-17-jeffrey.t.kirsher@intel.com> References: <20161207221918.57932-1-jeffrey.t.kirsher@intel.com> Cc: Jacob Keller , netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, jogreene@redhat.com, guru.anbalagane@oracle.com, Jeff Kirsher To: davem@davemloft.net Return-path: Received: from mga03.intel.com ([134.134.136.65]:28873 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933468AbcLGWUT (ORCPT ); Wed, 7 Dec 2016 17:20:19 -0500 In-Reply-To: <20161207221918.57932-1-jeffrey.t.kirsher@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Jacob Keller Fix a subtle issue with the code for converting VID=-1 filters into VID=0 filters when adding a new VLAN. Previously the code deleted the VID=-1 filter, and then added a new VID=0 filter. In the rare case that the addition fails due to -ENOMEM, we end up completely deleting the filter which prevents recovery if memory pressure subsides. While it is not strictly an issue because it is likely that memory issues would result in many other problems, we shouldn't delete the filter until after the addition succeeds. Change-ID: Icba07ddd04ecc6a3b27c2e29f2c1c8673d266826 Signed-off-by: Jacob Keller Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 8e65972..f9e9c90 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -2535,7 +2535,6 @@ int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid) I40E_VLAN_ANY); if (!del_f) continue; - __i40e_del_filter(vsi, del_f); add_f = i40e_add_filter(vsi, f->macaddr, 0); if (!add_f) { dev_info(&vsi->back->pdev->dev, @@ -2544,6 +2543,7 @@ int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid) spin_unlock_bh(&vsi->mac_filter_hash_lock); return -ENOMEM; } + __i40e_del_filter(vsi, del_f); } } -- 2.9.3