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net: hns3: add compatible handling for MAC VLAN switch parameter configuration

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Previously, hns3 driver just directly send specific setting bit
and mask bits of MAC VLAN switch parameter to the firmware, it
can not be compatible with the old firmware, because the old one
ignores mask bits and covers all bits with new setting bits.
So when running with old firmware, the communication between PF
and VF will fail after resetting or configuring spoof check, since
they will do the MAC VLAN switch parameter configuration.

This patch fixes this problem by reading switch parameter firstly,
then just modifies the corresponding bit and sends it to firmware.

Fixes: dd2956eab1 ("net: hns3: not allow SSU loopback while execute ethtool -t dev")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guangbin Huang 2019-11-14 10:32:39 +08:00 committed by David S. Miller
parent 15fb35fa9f
commit 71c5e83bcf
1 changed files with 14 additions and 2 deletions
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16
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
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@ -6263,11 +6263,23 @@ static int hclge_config_switch_param(struct hclge_dev *hdev, int vfid,
func_id = hclge_get_port_number(HOST_PORT, 0, vfid, 0);
req = (struct hclge_mac_vlan_switch_cmd *)desc.data;
/* read current config parameter */
hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_MAC_VLAN_SWITCH_PARAM,
false);
true);
req->roce_sel = HCLGE_MAC_VLAN_NIC_SEL;
req->func_id = cpu_to_le32(func_id);
req->switch_param = switch_param;
ret = hclge_cmd_send(&hdev->hw, &desc, 1);
if (ret) {
dev_err(&hdev->pdev->dev,
"read mac vlan switch parameter fail, ret = %d\n", ret);
return ret;
}
/* modify and write new config parameter */
hclge_cmd_reuse_desc(&desc, false);
req->switch_param = (req->switch_param & param_mask) | switch_param;
req->param_mask = param_mask;
ret = hclge_cmd_send(&hdev->hw, &desc, 1);