From 5b4089c8850a76ebfeabfb9fbd75c667dd7f2629 Mon Sep 17 00:00:00 2001 From: Jian Shen Date: Thu, 7 Apr 2022 16:12:45 +0800 Subject: [PATCH] net: hns3: fix bug when PF set the duplicate MAC address for VFs mainline inclusion from mainline-net-5.17 commit ccb18f05535c category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4YXIM CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ccb18f05535c ---------------------------------------------------------------------- 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 Signed-off-by: Guangbin Huang Signed-off-by: Jakub Kicinski Reviewed-by: Yue Haibing Acked-by: Xie XiuQi Signed-off-by: Zheng Zengkai --- 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 1e4c89d4b96b..7f215530c501 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -8438,12 +8438,11 @@ 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; -- GitLab