net: hns3: add support to query tqps number

This patch adds the support to query tqps number for PF driver
by using ehtool -l command.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Mingguang Qu <qumingguang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hnae3.h

@@ -386,6 +386,8 @@ struct hnae3_ae_ops {
 				  u16 vlan, u8 qos, __be16 proto);
 	void (*reset_event)(struct hnae3_handle *handle,
 			    enum hnae3_reset_type reset);
+	void (*get_channels)(struct hnae3_handle *handle,
+			     struct ethtool_channels *ch);
 };
 
 struct hnae3_dcb_ops {

drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c

@@ -849,6 +849,15 @@ static int hns3_nway_reset(struct net_device *netdev)
 	return genphy_restart_aneg(phy);
 }
 
+void hns3_get_channels(struct net_device *netdev,
+		       struct ethtool_channels *ch)
+{
+	struct hnae3_handle *h = hns3_get_handle(netdev);
+
+	if (h->ae_algo->ops->get_channels)
+		h->ae_algo->ops->get_channels(h, ch);
+}
+
 static const struct ethtool_ops hns3vf_ethtool_ops = {
 	.get_drvinfo = hns3_get_drvinfo,
 	.get_ringparam = hns3_get_ringparam,
@@ -883,6 +892,7 @@ static const struct ethtool_ops hns3_ethtool_ops = {
 	.get_link_ksettings = hns3_get_link_ksettings,
 	.set_link_ksettings = hns3_set_link_ksettings,
 	.nway_reset = hns3_nway_reset,
+	.get_channels = hns3_get_channels,
 };
 
 void hns3_ethtool_set_ops(struct net_device *netdev)

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

@@ -5002,6 +5002,26 @@ static void hclge_uninit_ae_dev(struct hnae3_ae_dev *ae_dev)
 	ae_dev->priv = NULL;
 }
 
+static u32 hclge_get_max_channels(struct hnae3_handle *handle)
+{
+	struct hnae3_knic_private_info *kinfo = &handle->kinfo;
+	struct hclge_vport *vport = hclge_get_vport(handle);
+	struct hclge_dev *hdev = vport->back;
+
+	return min_t(u32, hdev->rss_size_max * kinfo->num_tc, hdev->num_tqps);
+}
+
+static void hclge_get_channels(struct hnae3_handle *handle,
+			       struct ethtool_channels *ch)
+{
+	struct hclge_vport *vport = hclge_get_vport(handle);
+
+	ch->max_combined = hclge_get_max_channels(handle);
+	ch->other_count = 1;
+	ch->max_other = 1;
+	ch->combined_count = vport->alloc_tqps;
+}
+
 static const struct hnae3_ae_ops hclge_ops = {
 	.init_ae_dev = hclge_init_ae_dev,
 	.uninit_ae_dev = hclge_uninit_ae_dev,
@@ -5046,6 +5066,7 @@ static const struct hnae3_ae_ops hclge_ops = {
 	.set_vlan_filter = hclge_set_port_vlan_filter,
 	.set_vf_vlan_filter = hclge_set_vf_vlan_filter,
 	.reset_event = hclge_reset_event,
+	.get_channels = hclge_get_channels,
 };
 
 static struct hnae3_ae_algo ae_algo = {