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net: hns3: fix bug when PF set the duplicate MAC address for VFs
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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: ee4bcd3 ("net: hns3: refactor the MAC address configure")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Jian Shen authored and Jakub Kicinski committed Mar 25, 2022
1 parent afec498 commit ccb18f0
Showing 1 changed file with 2 additions and 3 deletions.
5 changes: 2 additions & 3 deletions drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;
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