From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6616BC3A5A5 for ; Thu, 5 Sep 2019 06:34:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 451412168B for ; Thu, 5 Sep 2019 06:34:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731630AbfIEGeh (ORCPT ); Thu, 5 Sep 2019 02:34:37 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49176 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725290AbfIEGeh (ORCPT ); Thu, 5 Sep 2019 02:34:37 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A9C0AC05E740; Thu, 5 Sep 2019 06:34:36 +0000 (UTC) Received: from p50.redhat.com (ovpn-117-224.ams2.redhat.com [10.36.117.224]) by smtp.corp.redhat.com (Postfix) with ESMTP id 25D296060D; Thu, 5 Sep 2019 06:34:34 +0000 (UTC) From: Stefan Assmann To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, davem@davemloft.net, jeffrey.t.kirsher@intel.com, lihong.yang@intel.com, sassmann@kpanic.de Subject: [PATCH] iavf: fix MAC address setting for VFs when filter is rejected Date: Thu, 5 Sep 2019 08:34:22 +0200 Message-Id: <20190905063422.28743-1-sassmann@kpanic.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Thu, 05 Sep 2019 06:34:36 +0000 (UTC) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Currently iavf unconditionally applies MAC address change requests. This brings the VF in a state where it is no longer able to pass traffic if the PF rejects a MAC filter change for the VF. A typical scenario for a rejected MAC filter is for an untrusted VF to request to change the MAC address when an administratively set MAC is present. To keep iavf working in this scenario the MAC filter handling in iavf needs to act on the PF reply regarding the MAC filter change. In the case of an ack the new MAC address gets set, whereas in the case of a nack the previous MAC address needs to stay in place. Signed-off-by: Stefan Assmann --- drivers/net/ethernet/intel/iavf/iavf_main.c | 1 - drivers/net/ethernet/intel/iavf/iavf_virtchnl.c | 7 +++++++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c index 39cc67cde89e..9e571a657fe7 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_main.c +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c @@ -826,7 +826,6 @@ static int iavf_set_mac(struct net_device *netdev, void *p) if (f) { ether_addr_copy(hw->mac.addr, addr->sa_data); - ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); } return (f == NULL) ? -ENOMEM : 0; diff --git a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c index d49d58a6de80..c46770eba320 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c +++ b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c @@ -1252,6 +1252,8 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter, case VIRTCHNL_OP_ADD_ETH_ADDR: dev_err(&adapter->pdev->dev, "Failed to add MAC filter, error %s\n", iavf_stat_str(&adapter->hw, v_retval)); + /* restore administratively set MAC address */ + ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); break; case VIRTCHNL_OP_DEL_VLAN: dev_err(&adapter->pdev->dev, "Failed to delete VLAN filter, error %s\n", @@ -1319,6 +1321,11 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter, } } switch (v_opcode) { + case VIRTCHNL_OP_ADD_ETH_ADDR: { + if (!ether_addr_equal(netdev->dev_addr, adapter->hw.mac.addr)) + ether_addr_copy(netdev->dev_addr, adapter->hw.mac.addr); + } + break; case VIRTCHNL_OP_GET_STATS: { struct iavf_eth_stats *stats = (struct iavf_eth_stats *)msg; -- 2.21.0