net: hns3: fix set port based VLAN for PF

In original codes, ndo_set_vf_vlan() in hns3 driver was implemented
wrong. It adds or removes VLAN into VLAN filter for VF, but VF is
unaware of it.

Indeed, ndo_set_vf_vlan() is expected to enable or disable port based
VLAN (hardware inserts a specified VLAN tag to all TX packets for a
specified VF) . When enable port based VLAN, we use port based VLAN id
as VLAN filter entry. When disable port based VLAN, we use VLAN id of
VLAN device.

This patch fixes it for PF, enable/disable port based VLAN when calls
ndo_set_vf_vlan().

Fixes: 46a3df9f ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

@@ -6585,30 +6585,6 @@ static int hclge_set_vlan_filter_hw(struct hclge_dev *hdev, __be16 proto,
 	return ret;
 }
 
-int hclge_set_vlan_filter(struct hnae3_handle *handle, __be16 proto,
-			  u16 vlan_id, bool is_kill)
-{
-	struct hclge_vport *vport = hclge_get_vport(handle);
-	struct hclge_dev *hdev = vport->back;
-
-	return hclge_set_vlan_filter_hw(hdev, proto, vport->vport_id, vlan_id,
-					0, is_kill);
-}
-
-static int hclge_set_vf_vlan_filter(struct hnae3_handle *handle, int vfid,
-				    u16 vlan, u8 qos, __be16 proto)
-{
-	struct hclge_vport *vport = hclge_get_vport(handle);
-	struct hclge_dev *hdev = vport->back;
-
-	if ((vfid >= hdev->num_alloc_vfs) || (vlan > 4095) || (qos > 7))
-		return -EINVAL;
-	if (proto != htons(ETH_P_8021Q))
-		return -EPROTONOSUPPORT;
-
-	return hclge_set_vlan_filter_hw(hdev, proto, vfid, vlan, qos, false);
-}
-
 static int hclge_set_vlan_tx_offload_cfg(struct hclge_vport *vport)
 {
 	struct hclge_tx_vtag_cfg *vcfg = &vport->txvlan_cfg;
@@ -6833,7 +6809,8 @@ static int hclge_init_vlan_config(struct hclge_dev *hdev)
 	return hclge_set_vlan_filter(handle, htons(ETH_P_8021Q), 0, false);
 }
 
-void hclge_add_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id)
+static void hclge_add_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id,
+				       bool writen_to_tbl)
 {
 	struct hclge_vport_vlan_cfg *vlan;
 
@@ -6845,14 +6822,38 @@ void hclge_add_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id)
 	if (!vlan)
 		return;
 
-	vlan->hd_tbl_status = true;
+	vlan->hd_tbl_status = writen_to_tbl;
 	vlan->vlan_id = vlan_id;
 
 	list_add_tail(&vlan->node, &vport->vlan_list);
 }
 
-void hclge_rm_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id,
-			       bool is_write_tbl)
+static int hclge_add_vport_all_vlan_table(struct hclge_vport *vport)
+{
+	struct hclge_vport_vlan_cfg *vlan, *tmp;
+	struct hclge_dev *hdev = vport->back;
+	int ret;
+
+	list_for_each_entry_safe(vlan, tmp, &vport->vlan_list, node) {
+		if (!vlan->hd_tbl_status) {
+			ret = hclge_set_vlan_filter_hw(hdev, htons(ETH_P_8021Q),
+						       vport->vport_id,
+						       vlan->vlan_id, 0, false);
+			if (ret) {
+				dev_err(&hdev->pdev->dev,
+					"restore vport vlan list failed, ret=%d\n",
+					ret);
+				return ret;
+			}
+		}
+		vlan->hd_tbl_status = true;
+	}
+
+	return 0;
+}
+
+static void hclge_rm_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id,
+				      bool is_write_tbl)
 {
 	struct hclge_vport_vlan_cfg *vlan, *tmp;
 	struct hclge_dev *hdev = vport->back;
@@ -6929,6 +6930,178 @@ int hclge_en_hw_strip_rxvtag(struct hnae3_handle *handle, bool enable)
 	return hclge_set_vlan_rx_offload_cfg(vport);
 }
 
+static int hclge_update_vlan_filter_entries(struct hclge_vport *vport,
+					    u16 port_base_vlan_state,
+					    struct hclge_vlan_info *new_info,
+					    struct hclge_vlan_info *old_info)
+{
+	struct hclge_dev *hdev = vport->back;
+	int ret;
+
+	if (port_base_vlan_state == HNAE3_PORT_BASE_VLAN_ENABLE) {
+		hclge_rm_vport_all_vlan_table(vport, false);
+		return hclge_set_vlan_filter_hw(hdev,
+						 htons(new_info->vlan_proto),
+						 vport->vport_id,
+						 new_info->vlan_tag,
+						 new_info->qos, false);
+	}
+
+	ret = hclge_set_vlan_filter_hw(hdev, htons(old_info->vlan_proto),
+				       vport->vport_id, old_info->vlan_tag,
+				       old_info->qos, true);
+	if (ret)
+		return ret;
+
+	return hclge_add_vport_all_vlan_table(vport);
+}
+
+int hclge_update_port_base_vlan_cfg(struct hclge_vport *vport, u16 state,
+				    struct hclge_vlan_info *vlan_info)
+{
+	struct hnae3_handle *nic = &vport->nic;
+	struct hclge_vlan_info *old_vlan_info;
+	struct hclge_dev *hdev = vport->back;
+	int ret;
+
+	old_vlan_info = &vport->port_base_vlan_cfg.vlan_info;
+
+	ret = hclge_vlan_offload_cfg(vport, state, vlan_info->vlan_tag);
+	if (ret)
+		return ret;
+
+	if (state == HNAE3_PORT_BASE_VLAN_MODIFY) {
+		/* add new VLAN tag */
+		ret = hclge_set_vlan_filter_hw(hdev, vlan_info->vlan_proto,
+					       vport->vport_id,
+					       vlan_info->vlan_tag,
+					       vlan_info->qos, false);
+		if (ret)
+			return ret;
+
+		/* remove old VLAN tag */
+		ret = hclge_set_vlan_filter_hw(hdev, old_vlan_info->vlan_proto,
+					       vport->vport_id,
+					       old_vlan_info->vlan_tag,
+					       old_vlan_info->qos, true);
+		if (ret)
+			return ret;
+
+		goto update;
+	}
+
+	ret = hclge_update_vlan_filter_entries(vport, state, vlan_info,
+					       old_vlan_info);
+	if (ret)
+		return ret;
+
+	/* update state only when disable/enable port based VLAN */
+	vport->port_base_vlan_cfg.state = state;
+	if (state == HNAE3_PORT_BASE_VLAN_DISABLE)
+		nic->port_base_vlan_state = HNAE3_PORT_BASE_VLAN_DISABLE;
+	else
+		nic->port_base_vlan_state = HNAE3_PORT_BASE_VLAN_ENABLE;
+
+update:
+	vport->port_base_vlan_cfg.vlan_info.vlan_tag = vlan_info->vlan_tag;
+	vport->port_base_vlan_cfg.vlan_info.qos = vlan_info->qos;
+	vport->port_base_vlan_cfg.vlan_info.vlan_proto = vlan_info->vlan_proto;
+
+	return 0;
+}
+
+static u16 hclge_get_port_base_vlan_state(struct hclge_vport *vport,
+					  enum hnae3_port_base_vlan_state state,
+					  u16 vlan)
+{
+	if (state == HNAE3_PORT_BASE_VLAN_DISABLE) {
+		if (!vlan)
+			return HNAE3_PORT_BASE_VLAN_NOCHANGE;
+		else
+			return HNAE3_PORT_BASE_VLAN_ENABLE;
+	} else {
+		if (!vlan)
+			return HNAE3_PORT_BASE_VLAN_DISABLE;
+		else if (vport->port_base_vlan_cfg.vlan_info.vlan_tag == vlan)
+			return HNAE3_PORT_BASE_VLAN_NOCHANGE;
+		else
+			return HNAE3_PORT_BASE_VLAN_MODIFY;
+	}
+}
+
+static int hclge_set_vf_vlan_filter(struct hnae3_handle *handle, int vfid,
+				    u16 vlan, u8 qos, __be16 proto)
+{
+	struct hclge_vport *vport = hclge_get_vport(handle);
+	struct hclge_dev *hdev = vport->back;
+	struct hclge_vlan_info vlan_info;
+	u16 state;
+	int ret;
+
+	if (hdev->pdev->revision == 0x20)
+		return -EOPNOTSUPP;
+
+	/* qos is a 3 bits value, so can not be bigger than 7 */
+	if (vfid >= hdev->num_alloc_vfs || vlan > VLAN_N_VID - 1 || qos > 7)
+		return -EINVAL;
+	if (proto != htons(ETH_P_8021Q))
+		return -EPROTONOSUPPORT;
+
+	vport = &hdev->vport[vfid];
+	state = hclge_get_port_base_vlan_state(vport,
+					       vport->port_base_vlan_cfg.state,
+					       vlan);
+	if (state == HNAE3_PORT_BASE_VLAN_NOCHANGE)
+		return 0;
+
+	vlan_info.vlan_tag = vlan;
+	vlan_info.qos = qos;
+	vlan_info.vlan_proto = ntohs(proto);
+
+	/* update port based VLAN for PF */
+	if (!vfid) {
+		hclge_notify_client(hdev, HNAE3_DOWN_CLIENT);
+		ret = hclge_update_port_base_vlan_cfg(vport, state, &vlan_info);
+		hclge_notify_client(hdev, HNAE3_UP_CLIENT);
+
+		return ret;
+	}
+
+	return -EOPNOTSUPP;
+}
+
+int hclge_set_vlan_filter(struct hnae3_handle *handle, __be16 proto,
+			  u16 vlan_id, bool is_kill)
+{
+	struct hclge_vport *vport = hclge_get_vport(handle);
+	struct hclge_dev *hdev = vport->back;
+	bool writen_to_tbl = false;
+	int ret = 0;
+
+	/* when port based VLAN enabled, we use port based VLAN as the VLAN
+	 * filter entry. In this case, we don't update VLAN filter table
+	 * when user add new VLAN or remove exist VLAN, just update the vport
+	 * VLAN list. The VLAN id in VLAN list won't be writen in VLAN filter
+	 * table until port based VLAN disabled
+	 */
+	if (handle->port_base_vlan_state == HNAE3_PORT_BASE_VLAN_DISABLE) {
+		ret = hclge_set_vlan_filter_hw(hdev, proto, vport->vport_id,
+					       vlan_id, 0, is_kill);
+		writen_to_tbl = true;
+	}
+
+	if (ret)
+		return ret;
+
+	if (is_kill)
+		hclge_rm_vport_vlan_table(vport, vlan_id, false);
+	else
+		hclge_add_vport_vlan_table(vport, vlan_id,
+					   writen_to_tbl);
+
+	return 0;
+}
+
 static int hclge_set_mac_mtu(struct hclge_dev *hdev, int new_mps)
 {
 	struct hclge_config_max_frm_size_cmd *req;

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h

@@ -937,9 +937,8 @@ void hclge_rm_vport_mac_table(struct hclge_vport *vport, const u8 *mac_addr,
 void hclge_rm_vport_all_mac_table(struct hclge_vport *vport, bool is_del_list,
 				  enum HCLGE_MAC_ADDR_TYPE mac_type);
 void hclge_uninit_vport_mac_table(struct hclge_dev *hdev);
-void hclge_add_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id);
-void hclge_rm_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id,
-			       bool is_write_tbl);
 void hclge_rm_vport_all_vlan_table(struct hclge_vport *vport, bool is_del_list);
 void hclge_uninit_vport_vlan_table(struct hclge_dev *hdev);
+int hclge_update_port_base_vlan_cfg(struct hclge_vport *vport, u16 state,
+				    struct hclge_vlan_info *vlan_info);
 #endif

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c

@@ -305,9 +305,6 @@ static int hclge_set_vf_vlan_cfg(struct hclge_vport *vport,
 		memcpy(&proto, &mbx_req->msg[5], sizeof(proto));
 		status = hclge_set_vlan_filter(handle, cpu_to_be16(proto),
 					       vlan, is_kill);
-		if (!status)
-			is_kill ? hclge_rm_vport_vlan_table(vport, vlan, false)
-			: hclge_add_vport_vlan_table(vport, vlan);
 	} else if (mbx_req->msg[1] == HCLGE_MBX_VLAN_RX_OFF_CFG) {
 		struct hnae3_handle *handle = &vport->nic;
 		bool en = mbx_req->msg[2] ? true : false;