linux-kernel - [PATCH 5.15 661/913] net: hns3: fix bug when PF set the duplicate MAC address for VFs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220405070359.651514045@linuxfoundation.org>
Date:   Tue,  5 Apr 2022 09:28:43 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jian Shen <shenjian15@...wei.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 661/913] net: hns3: fix bug when PF set the duplicate MAC address for VFs

From: Jian Shen <shenjian15@...wei.com>

[ Upstream commit ccb18f05535c96d26e2d559d402acb87700fc5a7 ]

If the MAC address A is configured to vport A and then vport B. The MAC
address of vport A in the hardware becomes invalid. If the address of
vport A is changed to MAC address B, the driver needs to delete the MAC
address A of vport A. Due to the MAC address A of vport A has become
invalid in the hardware entry, so "-ENOENT" is returned. In this case, the
"used_umv_size" value recorded in driver is not updated. As a result, the
MAC entry status of the software is inconsistent with that of the hardware.

Therefore, the driver updates the umv size even if the MAC entry cannot be
found. Ensure that the software and hardware status is consistent.

Fixes: ee4bcd3b7ae4 ("net: hns3: refactor the MAC address configure")
Signed-off-by: Jian Shen <shenjian15@...wei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@...wei.com>
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 66c407d0d507..b78de80d6c05 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -8714,12 +8714,11 @@ int hclge_rm_uc_addr_common(struct hclge_vport *vport,
 	hnae3_set_bit(req.entry_type, HCLGE_MAC_VLAN_BIT0_EN_B, 0);
 	hclge_prepare_mac_addr(&req, addr, false);
 	ret = hclge_remove_mac_vlan_tbl(vport, &req);
-	if (!ret) {
+	if (!ret || ret == -ENOENT) {
 		mutex_lock(&hdev->vport_lock);
 		hclge_update_umv_space(vport, true);
 		mutex_unlock(&hdev->vport_lock);
-	} else if (ret == -ENOENT) {
-		ret = 0;
+		return 0;
 	}
 
 	return ret;
-- 
2.34.1