Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2446 insertions, 0 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
new file mode 100644
index 000000000..8bce5f151
--- /dev/null
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -0,0 +1,2446 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2014-2015 Hisilicon Limited.
+ */
+
+#include <linux/clk.h>
+#include <linux/cpumask.h>
+#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/phy.h>
+#include <linux/platform_device.h>
+#include <linux/skbuff.h>
+
+#include "hnae.h"
+#include "hns_enet.h"
+#include "hns_dsaf_mac.h"
+
+#define NIC_MAX_Q_PER_VF 16
+#define HNS_NIC_TX_TIMEOUT (5 * HZ)
+
+#define SERVICE_TIMER_HZ (1 * HZ)
+
+#define RCB_IRQ_NOT_INITED 0
+#define RCB_IRQ_INITED 1
+#define HNS_BUFFER_SIZE_2048 2048
+
+#define BD_MAX_SEND_SIZE 8191
+#define SKB_TMP_LEN(SKB) \
+	(((SKB)->transport_header - (SKB)->mac_header) + tcp_hdrlen(SKB))
+
+static void fill_v2_desc_hw(struct hnae_ring *ring, void *priv, int size,
+			    int send_sz, dma_addr_t dma, int frag_end,
+			    int buf_num, enum hns_desc_type type, int mtu)
+{
+	struct hnae_desc *desc = &ring->desc[ring->next_to_use];
+	struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
+	struct iphdr *iphdr;
+	struct ipv6hdr *ipv6hdr;
+	struct sk_buff *skb;
+	__be16 protocol;
+	u8 bn_pid = 0;
+	u8 rrcfv = 0;
+	u8 ip_offset = 0;
+	u8 tvsvsn = 0;
+	u16 mss = 0;
+	u8 l4_len = 0;
+	u16 paylen = 0;
+
+	desc_cb->priv = priv;
+	desc_cb->length = size;
+	desc_cb->dma = dma;
+	desc_cb->type = type;
+
+	desc->addr = cpu_to_le64(dma);
+	desc->tx.send_size = cpu_to_le16((u16)send_sz);
+
+	/* config bd buffer end */
+	hnae_set_bit(rrcfv, HNSV2_TXD_VLD_B, 1);
+	hnae_set_field(bn_pid, HNSV2_TXD_BUFNUM_M, 0, buf_num - 1);
+
+	/* fill port_id in the tx bd for sending management pkts */
+	hnae_set_field(bn_pid, HNSV2_TXD_PORTID_M,
+		       HNSV2_TXD_PORTID_S, ring->q->handle->dport_id);
+
+	if (type == DESC_TYPE_SKB) {
+		skb = (struct sk_buff *)priv;
+
+		if (skb->ip_summed == CHECKSUM_PARTIAL) {
+			skb_reset_mac_len(skb);
+			protocol = skb->protocol;
+			ip_offset = ETH_HLEN;
+
+			if (protocol == htons(ETH_P_8021Q)) {
+				ip_offset += VLAN_HLEN;
+				protocol = vlan_get_protocol(skb);
+				skb->protocol = protocol;
+			}
+
+			if (skb->protocol == htons(ETH_P_IP)) {
+				iphdr = ip_hdr(skb);
+				hnae_set_bit(rrcfv, HNSV2_TXD_L3CS_B, 1);
+				hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
+
+				/* check for tcp/udp header */
+				if (iphdr->protocol == IPPROTO_TCP &&
+				    skb_is_gso(skb)) {
+					hnae_set_bit(tvsvsn,
+						     HNSV2_TXD_TSE_B, 1);
+					l4_len = tcp_hdrlen(skb);
+					mss = skb_shinfo(skb)->gso_size;
+					paylen = skb->len - SKB_TMP_LEN(skb);
+				}
+			} else if (skb->protocol == htons(ETH_P_IPV6)) {
+				hnae_set_bit(tvsvsn, HNSV2_TXD_IPV6_B, 1);
+				ipv6hdr = ipv6_hdr(skb);
+				hnae_set_bit(rrcfv, HNSV2_TXD_L4CS_B, 1);
+
+				/* check for tcp/udp header */
+				if (ipv6hdr->nexthdr == IPPROTO_TCP &&
+				    skb_is_gso(skb) && skb_is_gso_v6(skb)) {
+					hnae_set_bit(tvsvsn,
+						     HNSV2_TXD_TSE_B, 1);
+					l4_len = tcp_hdrlen(skb);
+					mss = skb_shinfo(skb)->gso_size;
+					paylen = skb->len - SKB_TMP_LEN(skb);
+				}
+			}
+			desc->tx.ip_offset = ip_offset;
+			desc->tx.tse_vlan_snap_v6_sctp_nth = tvsvsn;
+			desc->tx.mss = cpu_to_le16(mss);
+			desc->tx.l4_len = l4_len;
+			desc->tx.paylen = cpu_to_le16(paylen);
+		}
+	}
+
+	hnae_set_bit(rrcfv, HNSV2_TXD_FE_B, frag_end);
+
+	desc->tx.bn_pid = bn_pid;
+	desc->tx.ra_ri_cs_fe_vld = rrcfv;
+
+	ring_ptr_move_fw(ring, next_to_use);
+}
+
+static void fill_v2_desc(struct hnae_ring *ring, void *priv,
+			 int size, dma_addr_t dma, int frag_end,
+			 int buf_num, enum hns_desc_type type, int mtu)
+{
+	fill_v2_desc_hw(ring, priv, size, size, dma, frag_end,
+			buf_num, type, mtu);
+}
+
+static const struct acpi_device_id hns_enet_acpi_match[] = {
+	{ "HISI00C1", 0 },
+	{ "HISI00C2", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, hns_enet_acpi_match);
+
+static void fill_desc(struct hnae_ring *ring, void *priv,
+		      int size, dma_addr_t dma, int frag_end,
+		      int buf_num, enum hns_desc_type type, int mtu)
+{
+	struct hnae_desc *desc = &ring->desc[ring->next_to_use];
+	struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use];
+	struct sk_buff *skb;
+	__be16 protocol;
+	u32 ip_offset;
+	u32 asid_bufnum_pid = 0;
+	u32 flag_ipoffset = 0;
+
+	desc_cb->priv = priv;
+	desc_cb->length = size;
+	desc_cb->dma = dma;
+	desc_cb->type = type;
+
+	desc->addr = cpu_to_le64(dma);
+	desc->tx.send_size = cpu_to_le16((u16)size);
+
+	/*config bd buffer end */
+	flag_ipoffset |= 1 << HNS_TXD_VLD_B;
+
+	asid_bufnum_pid |= buf_num << HNS_TXD_BUFNUM_S;
+
+	if (type == DESC_TYPE_SKB) {
+		skb = (struct sk_buff *)priv;
+
+		if (skb->ip_summed == CHECKSUM_PARTIAL) {
+			protocol = skb->protocol;
+			ip_offset = ETH_HLEN;
+
+			/*if it is a SW VLAN check the next protocol*/
+			if (protocol == htons(ETH_P_8021Q)) {
+				ip_offset += VLAN_HLEN;
+				protocol = vlan_get_protocol(skb);
+				skb->protocol = protocol;
+			}
+
+			if (skb->protocol == htons(ETH_P_IP)) {
+				flag_ipoffset |= 1 << HNS_TXD_L3CS_B;
+				/* check for tcp/udp header */
+				flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
+
+			} else if (skb->protocol == htons(ETH_P_IPV6)) {
+				/* ipv6 has not l3 cs, check for L4 header */
+				flag_ipoffset |= 1 << HNS_TXD_L4CS_B;
+			}
+
+			flag_ipoffset |= ip_offset << HNS_TXD_IPOFFSET_S;
+		}
+	}
+
+	flag_ipoffset |= frag_end << HNS_TXD_FE_B;
+
+	desc->tx.asid_bufnum_pid = cpu_to_le16(asid_bufnum_pid);
+	desc->tx.flag_ipoffset = cpu_to_le32(flag_ipoffset);
+
+	ring_ptr_move_fw(ring, next_to_use);
+}
+
+static void unfill_desc(struct hnae_ring *ring)
+{
+	ring_ptr_move_bw(ring, next_to_use);
+}
+
+static int hns_nic_maybe_stop_tx(
+	struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
+{
+	struct sk_buff *skb = *out_skb;
+	struct sk_buff *new_skb = NULL;
+	int buf_num;
+
+	/* no. of segments (plus a header) */
+	buf_num = skb_shinfo(skb)->nr_frags + 1;
+
+	if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
+		if (ring_space(ring) < 1)
+			return -EBUSY;
+
+		new_skb = skb_copy(skb, GFP_ATOMIC);
+		if (!new_skb)
+			return -ENOMEM;
+
+		dev_kfree_skb_any(skb);
+		*out_skb = new_skb;
+		buf_num = 1;
+	} else if (buf_num > ring_space(ring)) {
+		return -EBUSY;
+	}
+
+	*bnum = buf_num;
+	return 0;
+}
+
+static int hns_nic_maybe_stop_tso(
+	struct sk_buff **out_skb, int *bnum, struct hnae_ring *ring)
+{
+	int i;
+	int size;
+	int buf_num;
+	int frag_num;
+	struct sk_buff *skb = *out_skb;
+	struct sk_buff *new_skb = NULL;
+	skb_frag_t *frag;
+
+	size = skb_headlen(skb);
+	buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
+
+	frag_num = skb_shinfo(skb)->nr_frags;
+	for (i = 0; i < frag_num; i++) {
+		frag = &skb_shinfo(skb)->frags[i];
+		size = skb_frag_size(frag);
+		buf_num += (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
+	}
+
+	if (unlikely(buf_num > ring->max_desc_num_per_pkt)) {
+		buf_num = (skb->len + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
+		if (ring_space(ring) < buf_num)
+			return -EBUSY;
+		/* manual split the send packet */
+		new_skb = skb_copy(skb, GFP_ATOMIC);
+		if (!new_skb)
+			return -ENOMEM;
+		dev_kfree_skb_any(skb);
+		*out_skb = new_skb;
+
+	} else if (ring_space(ring) < buf_num) {
+		return -EBUSY;
+	}
+
+	*bnum = buf_num;
+	return 0;
+}
+
+static void fill_tso_desc(struct hnae_ring *ring, void *priv,
+			  int size, dma_addr_t dma, int frag_end,
+			  int buf_num, enum hns_desc_type type, int mtu)
+{
+	int frag_buf_num;
+	int sizeoflast;
+	int k;
+
+	frag_buf_num = (size + BD_MAX_SEND_SIZE - 1) / BD_MAX_SEND_SIZE;
+	sizeoflast = size % BD_MAX_SEND_SIZE;
+	sizeoflast = sizeoflast ? sizeoflast : BD_MAX_SEND_SIZE;
+
+	/* when the frag size is bigger than hardware, split this frag */
+	for (k = 0; k < frag_buf_num; k++)
+		fill_v2_desc_hw(ring, priv, k == 0 ? size : 0,
+				(k == frag_buf_num - 1) ?
+					sizeoflast : BD_MAX_SEND_SIZE,
+				dma + BD_MAX_SEND_SIZE * k,
+				frag_end && (k == frag_buf_num - 1) ? 1 : 0,
+				buf_num,
+				(type == DESC_TYPE_SKB && !k) ?
+					DESC_TYPE_SKB : DESC_TYPE_PAGE,
+				mtu);
+}
+
+netdev_tx_t hns_nic_net_xmit_hw(struct net_device *ndev,
+				struct sk_buff *skb,
+				struct hns_nic_ring_data *ring_data)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_ring *ring = ring_data->ring;
+	struct device *dev = ring_to_dev(ring);
+	struct netdev_queue *dev_queue;
+	skb_frag_t *frag;
+	int buf_num;
+	int seg_num;
+	dma_addr_t dma;
+	int size, next_to_use;
+	int i;
+
+	switch (priv->ops.maybe_stop_tx(&skb, &buf_num, ring)) {
+	case -EBUSY:
+		ring->stats.tx_busy++;
+		goto out_net_tx_busy;
+	case -ENOMEM:
+		ring->stats.sw_err_cnt++;
+		netdev_err(ndev, "no memory to xmit!\n");
+		goto out_err_tx_ok;
+	default:
+		break;
+	}
+
+	/* no. of segments (plus a header) */
+	seg_num = skb_shinfo(skb)->nr_frags + 1;
+	next_to_use = ring->next_to_use;
+
+	/* fill the first part */
+	size = skb_headlen(skb);
+	dma = dma_map_single(dev, skb->data, size, DMA_TO_DEVICE);
+	if (dma_mapping_error(dev, dma)) {
+		netdev_err(ndev, "TX head DMA map failed\n");
+		ring->stats.sw_err_cnt++;
+		goto out_err_tx_ok;
+	}
+	priv->ops.fill_desc(ring, skb, size, dma, seg_num == 1 ? 1 : 0,
+			    buf_num, DESC_TYPE_SKB, ndev->mtu);
+
+	/* fill the fragments */
+	for (i = 1; i < seg_num; i++) {
+		frag = &skb_shinfo(skb)->frags[i - 1];
+		size = skb_frag_size(frag);
+		dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
+		if (dma_mapping_error(dev, dma)) {
+			netdev_err(ndev, "TX frag(%d) DMA map failed\n", i);
+			ring->stats.sw_err_cnt++;
+			goto out_map_frag_fail;
+		}
+		priv->ops.fill_desc(ring, skb_frag_page(frag), size, dma,
+				    seg_num - 1 == i ? 1 : 0, buf_num,
+				    DESC_TYPE_PAGE, ndev->mtu);
+	}
+
+	/*complete translate all packets*/
+	dev_queue = netdev_get_tx_queue(ndev, skb->queue_mapping);
+	netdev_tx_sent_queue(dev_queue, skb->len);
+
+	netif_trans_update(ndev);
+	ndev->stats.tx_bytes += skb->len;
+	ndev->stats.tx_packets++;
+
+	wmb(); /* commit all data before submit */
+	assert(skb->queue_mapping < priv->ae_handle->q_num);
+	hnae_queue_xmit(priv->ae_handle->qs[skb->queue_mapping], buf_num);
+
+	return NETDEV_TX_OK;
+
+out_map_frag_fail:
+
+	while (ring->next_to_use != next_to_use) {
+		unfill_desc(ring);
+		if (ring->next_to_use != next_to_use)
+			dma_unmap_page(dev,
+				       ring->desc_cb[ring->next_to_use].dma,
+				       ring->desc_cb[ring->next_to_use].length,
+				       DMA_TO_DEVICE);
+		else
+			dma_unmap_single(dev,
+					 ring->desc_cb[next_to_use].dma,
+					 ring->desc_cb[next_to_use].length,
+					 DMA_TO_DEVICE);
+	}
+
+out_err_tx_ok:
+
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_OK;
+
+out_net_tx_busy:
+
+	netif_stop_subqueue(ndev, skb->queue_mapping);
+
+	/* Herbert's original patch had:
+	 *  smp_mb__after_netif_stop_queue();
+	 * but since that doesn't exist yet, just open code it.
+	 */
+	smp_mb();
+	return NETDEV_TX_BUSY;
+}
+
+static void hns_nic_reuse_page(struct sk_buff *skb, int i,
+			       struct hnae_ring *ring, int pull_len,
+			       struct hnae_desc_cb *desc_cb)
+{
+	struct hnae_desc *desc;
+	u32 truesize;
+	int size;
+	int last_offset;
+	bool twobufs;
+
+	twobufs = ((PAGE_SIZE < 8192) &&
+		hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048);
+
+	desc = &ring->desc[ring->next_to_clean];
+	size = le16_to_cpu(desc->rx.size);
+
+	if (twobufs) {
+		truesize = hnae_buf_size(ring);
+	} else {
+		truesize = ALIGN(size, L1_CACHE_BYTES);
+		last_offset = hnae_page_size(ring) - hnae_buf_size(ring);
+	}
+
+	skb_add_rx_frag(skb, i, desc_cb->priv, desc_cb->page_offset + pull_len,
+			size - pull_len, truesize);
+
+	 /* avoid re-using remote pages,flag default unreuse */
+	if (unlikely(page_to_nid(desc_cb->priv) != numa_node_id()))
+		return;
+
+	if (twobufs) {
+		/* if we are only owner of page we can reuse it */
+		if (likely(page_count(desc_cb->priv) == 1)) {
+			/* flip page offset to other buffer */
+			desc_cb->page_offset ^= truesize;
+
+			desc_cb->reuse_flag = 1;
+			/* bump ref count on page before it is given*/
+			get_page(desc_cb->priv);
+		}
+		return;
+	}
+
+	/* move offset up to the next cache line */
+	desc_cb->page_offset += truesize;
+
+	if (desc_cb->page_offset <= last_offset) {
+		desc_cb->reuse_flag = 1;
+		/* bump ref count on page before it is given*/
+		get_page(desc_cb->priv);
+	}
+}
+
+static void get_v2rx_desc_bnum(u32 bnum_flag, int *out_bnum)
+{
+	*out_bnum = hnae_get_field(bnum_flag,
+				   HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1;
+}
+
+static void get_rx_desc_bnum(u32 bnum_flag, int *out_bnum)
+{
+	*out_bnum = hnae_get_field(bnum_flag,
+				   HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S);
+}
+
+static void hns_nic_rx_checksum(struct hns_nic_ring_data *ring_data,
+				struct sk_buff *skb, u32 flag)
+{
+	struct net_device *netdev = ring_data->napi.dev;
+	u32 l3id;
+	u32 l4id;
+
+	/* check if RX checksum offload is enabled */
+	if (unlikely(!(netdev->features & NETIF_F_RXCSUM)))
+		return;
+
+	/* In hardware, we only support checksum for the following protocols:
+	 * 1) IPv4,
+	 * 2) TCP(over IPv4 or IPv6),
+	 * 3) UDP(over IPv4 or IPv6),
+	 * 4) SCTP(over IPv4 or IPv6)
+	 * but we support many L3(IPv4, IPv6, MPLS, PPPoE etc) and L4(TCP,
+	 * UDP, GRE, SCTP, IGMP, ICMP etc.) protocols.
+	 *
+	 * Hardware limitation:
+	 * Our present hardware RX Descriptor lacks L3/L4 checksum "Status &
+	 * Error" bit (which usually can be used to indicate whether checksum
+	 * was calculated by the hardware and if there was any error encountered
+	 * during checksum calculation).
+	 *
+	 * Software workaround:
+	 * We do get info within the RX descriptor about the kind of L3/L4
+	 * protocol coming in the packet and the error status. These errors
+	 * might not just be checksum errors but could be related to version,
+	 * length of IPv4, UDP, TCP etc.
+	 * Because there is no-way of knowing if it is a L3/L4 error due to bad
+	 * checksum or any other L3/L4 error, we will not (cannot) convey
+	 * checksum status for such cases to upper stack and will not maintain
+	 * the RX L3/L4 checksum counters as well.
+	 */
+
+	l3id = hnae_get_field(flag, HNS_RXD_L3ID_M, HNS_RXD_L3ID_S);
+	l4id = hnae_get_field(flag, HNS_RXD_L4ID_M, HNS_RXD_L4ID_S);
+
+	/*  check L3 protocol for which checksum is supported */
+	if ((l3id != HNS_RX_FLAG_L3ID_IPV4) && (l3id != HNS_RX_FLAG_L3ID_IPV6))
+		return;
+
+	/* check for any(not just checksum)flagged L3 protocol errors */
+	if (unlikely(hnae_get_bit(flag, HNS_RXD_L3E_B)))
+		return;
+
+	/* we do not support checksum of fragmented packets */
+	if (unlikely(hnae_get_bit(flag, HNS_RXD_FRAG_B)))
+		return;
+
+	/*  check L4 protocol for which checksum is supported */
+	if ((l4id != HNS_RX_FLAG_L4ID_TCP) &&
+	    (l4id != HNS_RX_FLAG_L4ID_UDP) &&
+	    (l4id != HNS_RX_FLAG_L4ID_SCTP))
+		return;
+
+	/* check for any(not just checksum)flagged L4 protocol errors */
+	if (unlikely(hnae_get_bit(flag, HNS_RXD_L4E_B)))
+		return;
+
+	/* now, this has to be a packet with valid RX checksum */
+	skb->ip_summed = CHECKSUM_UNNECESSARY;
+}
+
+static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
+			       struct sk_buff **out_skb, int *out_bnum)
+{
+	struct hnae_ring *ring = ring_data->ring;
+	struct net_device *ndev = ring_data->napi.dev;
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct sk_buff *skb;
+	struct hnae_desc *desc;
+	struct hnae_desc_cb *desc_cb;
+	unsigned char *va;
+	int bnum, length, i;
+	int pull_len;
+	u32 bnum_flag;
+
+	desc = &ring->desc[ring->next_to_clean];
+	desc_cb = &ring->desc_cb[ring->next_to_clean];
+
+	prefetch(desc);
+
+	va = (unsigned char *)desc_cb->buf + desc_cb->page_offset;
+
+	/* prefetch first cache line of first page */
+	net_prefetch(va);
+
+	skb = *out_skb = napi_alloc_skb(&ring_data->napi,
+					HNS_RX_HEAD_SIZE);
+	if (unlikely(!skb)) {
+		ring->stats.sw_err_cnt++;
+		return -ENOMEM;
+	}
+
+	prefetchw(skb->data);
+	length = le16_to_cpu(desc->rx.pkt_len);
+	bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
+	priv->ops.get_rxd_bnum(bnum_flag, &bnum);
+	*out_bnum = bnum;
+
+	if (length <= HNS_RX_HEAD_SIZE) {
+		memcpy(__skb_put(skb, length), va, ALIGN(length, sizeof(long)));
+
+		/* we can reuse buffer as-is, just make sure it is local */
+		if (likely(page_to_nid(desc_cb->priv) == numa_node_id()))
+			desc_cb->reuse_flag = 1;
+		else /* this page cannot be reused so discard it */
+			put_page(desc_cb->priv);
+
+		ring_ptr_move_fw(ring, next_to_clean);
+
+		if (unlikely(bnum != 1)) { /* check err*/
+			*out_bnum = 1;
+			goto out_bnum_err;
+		}
+	} else {
+		ring->stats.seg_pkt_cnt++;
+
+		pull_len = eth_get_headlen(ndev, va, HNS_RX_HEAD_SIZE);
+		memcpy(__skb_put(skb, pull_len), va,
+		       ALIGN(pull_len, sizeof(long)));
+
+		hns_nic_reuse_page(skb, 0, ring, pull_len, desc_cb);
+		ring_ptr_move_fw(ring, next_to_clean);
+
+		if (unlikely(bnum >= (int)MAX_SKB_FRAGS)) { /* check err*/
+			*out_bnum = 1;
+			goto out_bnum_err;
+		}
+		for (i = 1; i < bnum; i++) {
+			desc = &ring->desc[ring->next_to_clean];
+			desc_cb = &ring->desc_cb[ring->next_to_clean];
+
+			hns_nic_reuse_page(skb, i, ring, 0, desc_cb);
+			ring_ptr_move_fw(ring, next_to_clean);
+		}
+	}
+
+	/* check except process, free skb and jump the desc */
+	if (unlikely((!bnum) || (bnum > ring->max_desc_num_per_pkt))) {
+out_bnum_err:
+		*out_bnum = *out_bnum ? *out_bnum : 1; /* ntc moved,cannot 0*/
+		netdev_err(ndev, "invalid bnum(%d,%d,%d,%d),%016llx,%016llx\n",
+			   bnum, ring->max_desc_num_per_pkt,
+			   length, (int)MAX_SKB_FRAGS,
+			   ((u64 *)desc)[0], ((u64 *)desc)[1]);
+		ring->stats.err_bd_num++;
+		dev_kfree_skb_any(skb);
+		return -EDOM;
+	}
+
+	bnum_flag = le32_to_cpu(desc->rx.ipoff_bnum_pid_flag);
+
+	if (unlikely(!hnae_get_bit(bnum_flag, HNS_RXD_VLD_B))) {
+		netdev_err(ndev, "no valid bd,%016llx,%016llx\n",
+			   ((u64 *)desc)[0], ((u64 *)desc)[1]);
+		ring->stats.non_vld_descs++;
+		dev_kfree_skb_any(skb);
+		return -EINVAL;
+	}
+
+	if (unlikely((!desc->rx.pkt_len) ||
+		     hnae_get_bit(bnum_flag, HNS_RXD_DROP_B))) {
+		ring->stats.err_pkt_len++;
+		dev_kfree_skb_any(skb);
+		return -EFAULT;
+	}
+
+	if (unlikely(hnae_get_bit(bnum_flag, HNS_RXD_L2E_B))) {
+		ring->stats.l2_err++;
+		dev_kfree_skb_any(skb);
+		return -EFAULT;
+	}
+
+	ring->stats.rx_pkts++;
+	ring->stats.rx_bytes += skb->len;
+
+	/* indicate to upper stack if our hardware has already calculated
+	 * the RX checksum
+	 */
+	hns_nic_rx_checksum(ring_data, skb, bnum_flag);
+
+	return 0;
+}
+
+static void
+hns_nic_alloc_rx_buffers(struct hns_nic_ring_data *ring_data, int cleand_count)
+{
+	int i, ret;
+	struct hnae_desc_cb res_cbs;
+	struct hnae_desc_cb *desc_cb;
+	struct hnae_ring *ring = ring_data->ring;
+	struct net_device *ndev = ring_data->napi.dev;
+
+	for (i = 0; i < cleand_count; i++) {
+		desc_cb = &ring->desc_cb[ring->next_to_use];
+		if (desc_cb->reuse_flag) {
+			ring->stats.reuse_pg_cnt++;
+			hnae_reuse_buffer(ring, ring->next_to_use);
+		} else {
+			ret = hnae_reserve_buffer_map(ring, &res_cbs);
+			if (ret) {
+				ring->stats.sw_err_cnt++;
+				netdev_err(ndev, "hnae reserve buffer map failed.\n");
+				break;
+			}
+			hnae_replace_buffer(ring, ring->next_to_use, &res_cbs);
+		}
+
+		ring_ptr_move_fw(ring, next_to_use);
+	}
+
+	wmb(); /* make all data has been write before submit */
+	writel_relaxed(i, ring->io_base + RCB_REG_HEAD);
+}
+
+/* return error number for error or number of desc left to take
+ */
+static void hns_nic_rx_up_pro(struct hns_nic_ring_data *ring_data,
+			      struct sk_buff *skb)
+{
+	struct net_device *ndev = ring_data->napi.dev;
+
+	skb->protocol = eth_type_trans(skb, ndev);
+	napi_gro_receive(&ring_data->napi, skb);
+}
+
+static int hns_desc_unused(struct hnae_ring *ring)
+{
+	int ntc = ring->next_to_clean;
+	int ntu = ring->next_to_use;
+
+	return ((ntc >= ntu) ? 0 : ring->desc_num) + ntc - ntu;
+}
+
+#define HNS_LOWEST_LATENCY_RATE		27	/* 27 MB/s */
+#define HNS_LOW_LATENCY_RATE			80	/* 80 MB/s */
+
+#define HNS_COAL_BDNUM			3
+
+static u32 hns_coal_rx_bdnum(struct hnae_ring *ring)
+{
+	bool coal_enable = ring->q->handle->coal_adapt_en;
+
+	if (coal_enable &&
+	    ring->coal_last_rx_bytes > HNS_LOWEST_LATENCY_RATE)
+		return HNS_COAL_BDNUM;
+	else
+		return 0;
+}
+
+static void hns_update_rx_rate(struct hnae_ring *ring)
+{
+	bool coal_enable = ring->q->handle->coal_adapt_en;
+	u32 time_passed_ms;
+	u64 total_bytes;
+
+	if (!coal_enable ||
+	    time_before(jiffies, ring->coal_last_jiffies + (HZ >> 4)))
+		return;
+
+	/* ring->stats.rx_bytes overflowed */
+	if (ring->coal_last_rx_bytes > ring->stats.rx_bytes) {
+		ring->coal_last_rx_bytes = ring->stats.rx_bytes;
+		ring->coal_last_jiffies = jiffies;
+		return;
+	}
+
+	total_bytes = ring->stats.rx_bytes - ring->coal_last_rx_bytes;
+	time_passed_ms = jiffies_to_msecs(jiffies - ring->coal_last_jiffies);
+	do_div(total_bytes, time_passed_ms);
+	ring->coal_rx_rate = total_bytes >> 10;
+
+	ring->coal_last_rx_bytes = ring->stats.rx_bytes;
+	ring->coal_last_jiffies = jiffies;
+}
+
+/**
+ * smooth_alg - smoothing algrithm for adjusting coalesce parameter
+ * @new_param: new value
+ * @old_param: old value
+ **/
+static u32 smooth_alg(u32 new_param, u32 old_param)
+{
+	u32 gap = (new_param > old_param) ? new_param - old_param
+					  : old_param - new_param;
+
+	if (gap > 8)
+		gap >>= 3;
+
+	if (new_param > old_param)
+		return old_param + gap;
+	else
+		return old_param - gap;
+}
+
+/**
+ * hns_nic_adp_coalesce - self adapte coalesce according to rx rate
+ * @ring_data: pointer to hns_nic_ring_data
+ **/
+static void hns_nic_adpt_coalesce(struct hns_nic_ring_data *ring_data)
+{
+	struct hnae_ring *ring = ring_data->ring;
+	struct hnae_handle *handle = ring->q->handle;
+	u32 new_coal_param, old_coal_param = ring->coal_param;
+
+	if (ring->coal_rx_rate < HNS_LOWEST_LATENCY_RATE)
+		new_coal_param = HNAE_LOWEST_LATENCY_COAL_PARAM;
+	else if (ring->coal_rx_rate < HNS_LOW_LATENCY_RATE)
+		new_coal_param = HNAE_LOW_LATENCY_COAL_PARAM;
+	else
+		new_coal_param = HNAE_BULK_LATENCY_COAL_PARAM;
+
+	if (new_coal_param == old_coal_param &&
+	    new_coal_param == handle->coal_param)
+		return;
+
+	new_coal_param = smooth_alg(new_coal_param, old_coal_param);
+	ring->coal_param = new_coal_param;
+
+	/**
+	 * Because all ring in one port has one coalesce param, when one ring
+	 * calculate its own coalesce param, it cannot write to hardware at
+	 * once. There are three conditions as follows:
+	 *       1. current ring's coalesce param is larger than the hardware.
+	 *       2. or ring which adapt last time can change again.
+	 *       3. timeout.
+	 */
+	if (new_coal_param == handle->coal_param) {
+		handle->coal_last_jiffies = jiffies;
+		handle->coal_ring_idx = ring_data->queue_index;
+	} else if (new_coal_param > handle->coal_param ||
+		   handle->coal_ring_idx == ring_data->queue_index ||
+		   time_after(jiffies, handle->coal_last_jiffies + (HZ >> 4))) {
+		handle->dev->ops->set_coalesce_usecs(handle,
+					new_coal_param);
+		handle->dev->ops->set_coalesce_frames(handle,
+					1, new_coal_param);
+		handle->coal_param = new_coal_param;
+		handle->coal_ring_idx = ring_data->queue_index;
+		handle->coal_last_jiffies = jiffies;
+	}
+}
+
+static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
+			       int budget, void *v)
+{
+	struct hnae_ring *ring = ring_data->ring;
+	struct sk_buff *skb;
+	int num, bnum;
+#define RCB_NOF_ALLOC_RX_BUFF_ONCE 16
+	int recv_pkts, recv_bds, clean_count, err;
+	int unused_count = hns_desc_unused(ring);
+
+	num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
+	rmb(); /* make sure num taken effect before the other data is touched */
+
+	recv_pkts = 0, recv_bds = 0, clean_count = 0;
+	num -= unused_count;
+
+	while (recv_pkts < budget && recv_bds < num) {
+		/* reuse or realloc buffers */
+		if (clean_count + unused_count >= RCB_NOF_ALLOC_RX_BUFF_ONCE) {
+			hns_nic_alloc_rx_buffers(ring_data,
+						 clean_count + unused_count);
+			clean_count = 0;
+			unused_count = hns_desc_unused(ring);
+		}
+
+		/* poll one pkt */
+		err = hns_nic_poll_rx_skb(ring_data, &skb, &bnum);
+		if (unlikely(!skb)) /* this fault cannot be repaired */
+			goto out;
+
+		recv_bds += bnum;
+		clean_count += bnum;
+		if (unlikely(err)) {  /* do jump the err */
+			recv_pkts++;
+			continue;
+		}
+
+		/* do update ip stack process*/
+		((void (*)(struct hns_nic_ring_data *, struct sk_buff *))v)(
+							ring_data, skb);
+		recv_pkts++;
+	}
+
+out:
+	/* make all data has been write before submit */
+	if (clean_count + unused_count > 0)
+		hns_nic_alloc_rx_buffers(ring_data,
+					 clean_count + unused_count);
+
+	return recv_pkts;
+}
+
+static bool hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
+{
+	struct hnae_ring *ring = ring_data->ring;
+	int num = 0;
+	bool rx_stopped;
+
+	hns_update_rx_rate(ring);
+
+	/* for hardware bug fixed */
+	ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
+	num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
+
+	if (num <= hns_coal_rx_bdnum(ring)) {
+		if (ring->q->handle->coal_adapt_en)
+			hns_nic_adpt_coalesce(ring_data);
+
+		rx_stopped = true;
+	} else {
+		ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
+			ring_data->ring, 1);
+
+		rx_stopped = false;
+	}
+
+	return rx_stopped;
+}
+
+static bool hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
+{
+	struct hnae_ring *ring = ring_data->ring;
+	int num;
+
+	hns_update_rx_rate(ring);
+	num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
+
+	if (num <= hns_coal_rx_bdnum(ring)) {
+		if (ring->q->handle->coal_adapt_en)
+			hns_nic_adpt_coalesce(ring_data);
+
+		return true;
+	}
+
+	return false;
+}
+
+static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
+					    int *bytes, int *pkts)
+{
+	struct hnae_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_clean];
+
+	(*pkts) += (desc_cb->type == DESC_TYPE_SKB);
+	(*bytes) += desc_cb->length;
+	/* desc_cb will be cleaned, after hnae_free_buffer_detach*/
+	hnae_free_buffer_detach(ring, ring->next_to_clean);
+
+	ring_ptr_move_fw(ring, next_to_clean);
+}
+
+static int is_valid_clean_head(struct hnae_ring *ring, int h)
+{
+	int u = ring->next_to_use;
+	int c = ring->next_to_clean;
+
+	if (unlikely(h > ring->desc_num))
+		return 0;
+
+	assert(u > 0 && u < ring->desc_num);
+	assert(c > 0 && c < ring->desc_num);
+	assert(u != c && h != c); /* must be checked before call this func */
+
+	return u > c ? (h > c && h <= u) : (h > c || h <= u);
+}
+
+/* reclaim all desc in one budget
+ * return error or number of desc left
+ */
+static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
+			       int budget, void *v)
+{
+	struct hnae_ring *ring = ring_data->ring;
+	struct net_device *ndev = ring_data->napi.dev;
+	struct netdev_queue *dev_queue;
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	int head;
+	int bytes, pkts;
+
+	head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
+	rmb(); /* make sure head is ready before touch any data */
+
+	if (is_ring_empty(ring) || head == ring->next_to_clean)
+		return 0; /* no data to poll */
+
+	if (!is_valid_clean_head(ring, head)) {
+		netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
+			   ring->next_to_use, ring->next_to_clean);
+		ring->stats.io_err_cnt++;
+		return -EIO;
+	}
+
+	bytes = 0;
+	pkts = 0;
+	while (head != ring->next_to_clean) {
+		hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
+		/* issue prefetch for next Tx descriptor */
+		prefetch(&ring->desc_cb[ring->next_to_clean]);
+	}
+	/* update tx ring statistics. */
+	ring->stats.tx_pkts += pkts;
+	ring->stats.tx_bytes += bytes;
+
+	dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
+	netdev_tx_completed_queue(dev_queue, pkts, bytes);
+
+	if (unlikely(priv->link && !netif_carrier_ok(ndev)))
+		netif_carrier_on(ndev);
+
+	if (unlikely(pkts && netif_carrier_ok(ndev) &&
+		     (ring_space(ring) >= ring->max_desc_num_per_pkt * 2))) {
+		/* Make sure that anybody stopping the queue after this
+		 * sees the new next_to_clean.
+		 */
+		smp_mb();
+		if (netif_tx_queue_stopped(dev_queue) &&
+		    !test_bit(NIC_STATE_DOWN, &priv->state)) {
+			netif_tx_wake_queue(dev_queue);
+			ring->stats.restart_queue++;
+		}
+	}
+	return 0;
+}
+
+static bool hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
+{
+	struct hnae_ring *ring = ring_data->ring;
+	int head;
+
+	ring_data->ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
+
+	head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
+
+	if (head != ring->next_to_clean) {
+		ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
+			ring_data->ring, 1);
+
+		return false;
+	} else {
+		return true;
+	}
+}
+
+static bool hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
+{
+	struct hnae_ring *ring = ring_data->ring;
+	int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
+
+	if (head == ring->next_to_clean)
+		return true;
+	else
+		return false;
+}
+
+static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
+{
+	struct hnae_ring *ring = ring_data->ring;
+	struct net_device *ndev = ring_data->napi.dev;
+	struct netdev_queue *dev_queue;
+	int head;
+	int bytes, pkts;
+
+	head = ring->next_to_use; /* ntu :soft setted ring position*/
+	bytes = 0;
+	pkts = 0;
+	while (head != ring->next_to_clean)
+		hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
+
+	dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
+	netdev_tx_reset_queue(dev_queue);
+}
+
+static int hns_nic_common_poll(struct napi_struct *napi, int budget)
+{
+	int clean_complete = 0;
+	struct hns_nic_ring_data *ring_data =
+		container_of(napi, struct hns_nic_ring_data, napi);
+	struct hnae_ring *ring = ring_data->ring;
+
+	clean_complete += ring_data->poll_one(
+				ring_data, budget - clean_complete,
+				ring_data->ex_process);
+
+	if (clean_complete < budget) {
+		if (ring_data->fini_process(ring_data)) {
+			napi_complete(napi);
+			ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
+		} else {
+			return budget;
+		}
+	}
+
+	return clean_complete;
+}
+
+static irqreturn_t hns_irq_handle(int irq, void *dev)
+{
+	struct hns_nic_ring_data *ring_data = (struct hns_nic_ring_data *)dev;
+
+	ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
+		ring_data->ring, 1);
+	napi_schedule(&ring_data->napi);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ *hns_nic_adjust_link - adjust net work mode by the phy stat or new param
+ *@ndev: net device
+ */
+static void hns_nic_adjust_link(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	int state = 1;
+
+	/* If there is no phy, do not need adjust link */
+	if (ndev->phydev) {
+		/* When phy link down, do nothing */
+		if (ndev->phydev->link == 0)
+			return;
+
+		if (h->dev->ops->need_adjust_link(h, ndev->phydev->speed,
+						  ndev->phydev->duplex)) {
+			/* because Hi161X chip don't support to change gmac
+			 * speed and duplex with traffic. Delay 200ms to
+			 * make sure there is no more data in chip FIFO.
+			 */
+			netif_carrier_off(ndev);
+			msleep(200);
+			h->dev->ops->adjust_link(h, ndev->phydev->speed,
+						 ndev->phydev->duplex);
+			netif_carrier_on(ndev);
+		}
+	}
+
+	state = state && h->dev->ops->get_status(h);
+
+	if (state != priv->link) {
+		if (state) {
+			netif_carrier_on(ndev);
+			netif_tx_wake_all_queues(ndev);
+			netdev_info(ndev, "link up\n");
+		} else {
+			netif_carrier_off(ndev);
+			netdev_info(ndev, "link down\n");
+		}
+		priv->link = state;
+	}
+}
+
+/**
+ *hns_nic_init_phy - init phy
+ *@ndev: net device
+ *@h: ae handle
+ * Return 0 on success, negative on failure
+ */
+int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
+{
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = { 0, };
+	struct phy_device *phy_dev = h->phy_dev;
+	int ret;
+
+	if (!h->phy_dev)
+		return 0;
+
+	ethtool_convert_legacy_u32_to_link_mode(supported, h->if_support);
+	linkmode_and(phy_dev->supported, phy_dev->supported, supported);
+	linkmode_copy(phy_dev->advertising, phy_dev->supported);
+
+	if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
+		phy_dev->autoneg = false;
+
+	if (h->phy_if != PHY_INTERFACE_MODE_XGMII) {
+		phy_dev->dev_flags = 0;
+
+		ret = phy_connect_direct(ndev, phy_dev, hns_nic_adjust_link,
+					 h->phy_if);
+	} else {
+		ret = phy_attach_direct(ndev, phy_dev, 0, h->phy_if);
+	}
+	if (unlikely(ret))
+		return -ENODEV;
+
+	phy_attached_info(phy_dev);
+
+	return 0;
+}
+
+static int hns_nic_ring_open(struct net_device *netdev, int idx)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+	struct hnae_handle *h = priv->ae_handle;
+
+	napi_enable(&priv->ring_data[idx].napi);
+
+	enable_irq(priv->ring_data[idx].ring->irq);
+	h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 0);
+
+	return 0;
+}
+
+static int hns_nic_net_set_mac_address(struct net_device *ndev, void *p)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	struct sockaddr *mac_addr = p;
+	int ret;
+
+	if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	ret = h->dev->ops->set_mac_addr(h, mac_addr->sa_data);
+	if (ret) {
+		netdev_err(ndev, "set_mac_address fail, ret=%d!\n", ret);
+		return ret;
+	}
+
+	memcpy(ndev->dev_addr, mac_addr->sa_data, ndev->addr_len);
+
+	return 0;
+}
+
+static void hns_nic_update_stats(struct net_device *netdev)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+	struct hnae_handle *h = priv->ae_handle;
+
+	h->dev->ops->update_stats(h, &netdev->stats);
+}
+
+/* set mac addr if it is configed. or leave it to the AE driver */
+static void hns_init_mac_addr(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+
+	if (!device_get_mac_address(priv->dev, ndev->dev_addr, ETH_ALEN)) {
+		eth_hw_addr_random(ndev);
+		dev_warn(priv->dev, "No valid mac, use random mac %pM",
+			 ndev->dev_addr);
+	}
+}
+
+static void hns_nic_ring_close(struct net_device *netdev, int idx)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+	struct hnae_handle *h = priv->ae_handle;
+
+	h->dev->ops->toggle_ring_irq(priv->ring_data[idx].ring, 1);
+	disable_irq(priv->ring_data[idx].ring->irq);
+
+	napi_disable(&priv->ring_data[idx].napi);
+}
+
+static int hns_nic_init_affinity_mask(int q_num, int ring_idx,
+				      struct hnae_ring *ring, cpumask_t *mask)
+{
+	int cpu;
+
+	/* Diffrent irq banlance between 16core and 32core.
+	 * The cpu mask set by ring index according to the ring flag
+	 * which indicate the ring is tx or rx.
+	 */
+	if (q_num == num_possible_cpus()) {
+		if (is_tx_ring(ring))
+			cpu = ring_idx;
+		else
+			cpu = ring_idx - q_num;
+	} else {
+		if (is_tx_ring(ring))
+			cpu = ring_idx * 2;
+		else
+			cpu = (ring_idx - q_num) * 2 + 1;
+	}
+
+	cpumask_clear(mask);
+	cpumask_set_cpu(cpu, mask);
+
+	return cpu;
+}
+
+static void hns_nic_free_irq(int q_num, struct hns_nic_priv *priv)
+{
+	int i;
+
+	for (i = 0; i < q_num * 2; i++) {
+		if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
+			irq_set_affinity_hint(priv->ring_data[i].ring->irq,
+					      NULL);
+			free_irq(priv->ring_data[i].ring->irq,
+				 &priv->ring_data[i]);
+			priv->ring_data[i].ring->irq_init_flag =
+				RCB_IRQ_NOT_INITED;
+		}
+	}
+}
+
+static int hns_nic_init_irq(struct hns_nic_priv *priv)
+{
+	struct hnae_handle *h = priv->ae_handle;
+	struct hns_nic_ring_data *rd;
+	int i;
+	int ret;
+	int cpu;
+
+	for (i = 0; i < h->q_num * 2; i++) {
+		rd = &priv->ring_data[i];
+
+		if (rd->ring->irq_init_flag == RCB_IRQ_INITED)
+			break;
+
+		snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
+			 "%s-%s%d", priv->netdev->name,
+			 (is_tx_ring(rd->ring) ? "tx" : "rx"), rd->queue_index);
+
+		rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
+
+		irq_set_status_flags(rd->ring->irq, IRQ_NOAUTOEN);
+		ret = request_irq(rd->ring->irq,
+				  hns_irq_handle, 0, rd->ring->ring_name, rd);
+		if (ret) {
+			netdev_err(priv->netdev, "request irq(%d) fail\n",
+				   rd->ring->irq);
+			goto out_free_irq;
+		}
+
+		cpu = hns_nic_init_affinity_mask(h->q_num, i,
+						 rd->ring, &rd->mask);
+
+		if (cpu_online(cpu))
+			irq_set_affinity_hint(rd->ring->irq,
+					      &rd->mask);
+
+		rd->ring->irq_init_flag = RCB_IRQ_INITED;
+	}
+
+	return 0;
+
+out_free_irq:
+	hns_nic_free_irq(h->q_num, priv);
+	return ret;
+}
+
+static int hns_nic_net_up(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	int i, j;
+	int ret;
+
+	if (!test_bit(NIC_STATE_DOWN, &priv->state))
+		return 0;
+
+	ret = hns_nic_init_irq(priv);
+	if (ret != 0) {
+		netdev_err(ndev, "hns init irq failed! ret=%d\n", ret);
+		return ret;
+	}
+
+	for (i = 0; i < h->q_num * 2; i++) {
+		ret = hns_nic_ring_open(ndev, i);
+		if (ret)
+			goto out_has_some_queues;
+	}
+
+	ret = h->dev->ops->set_mac_addr(h, ndev->dev_addr);
+	if (ret)
+		goto out_set_mac_addr_err;
+
+	ret = h->dev->ops->start ? h->dev->ops->start(h) : 0;
+	if (ret)
+		goto out_start_err;
+
+	if (ndev->phydev)
+		phy_start(ndev->phydev);
+
+	clear_bit(NIC_STATE_DOWN, &priv->state);
+	(void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
+
+	return 0;
+
+out_start_err:
+	netif_stop_queue(ndev);
+out_set_mac_addr_err:
+out_has_some_queues:
+	for (j = i - 1; j >= 0; j--)
+		hns_nic_ring_close(ndev, j);
+
+	hns_nic_free_irq(h->q_num, priv);
+	set_bit(NIC_STATE_DOWN, &priv->state);
+
+	return ret;
+}
+
+static void hns_nic_net_down(struct net_device *ndev)
+{
+	int i;
+	struct hnae_ae_ops *ops;
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+
+	if (test_and_set_bit(NIC_STATE_DOWN, &priv->state))
+		return;
+
+	(void)del_timer_sync(&priv->service_timer);
+	netif_tx_stop_all_queues(ndev);
+	netif_carrier_off(ndev);
+	netif_tx_disable(ndev);
+	priv->link = 0;
+
+	if (ndev->phydev)
+		phy_stop(ndev->phydev);
+
+	ops = priv->ae_handle->dev->ops;
+
+	if (ops->stop)
+		ops->stop(priv->ae_handle);
+
+	netif_tx_stop_all_queues(ndev);
+
+	for (i = priv->ae_handle->q_num - 1; i >= 0; i--) {
+		hns_nic_ring_close(ndev, i);
+		hns_nic_ring_close(ndev, i + priv->ae_handle->q_num);
+
+		/* clean tx buffers*/
+		hns_nic_tx_clr_all_bufs(priv->ring_data + i);
+	}
+}
+
+void hns_nic_net_reset(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *handle = priv->ae_handle;
+
+	while (test_and_set_bit(NIC_STATE_RESETTING, &priv->state))
+		usleep_range(1000, 2000);
+
+	(void)hnae_reinit_handle(handle);
+
+	clear_bit(NIC_STATE_RESETTING, &priv->state);
+}
+
+void hns_nic_net_reinit(struct net_device *netdev)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+	enum hnae_port_type type = priv->ae_handle->port_type;
+
+	netif_trans_update(priv->netdev);
+	while (test_and_set_bit(NIC_STATE_REINITING, &priv->state))
+		usleep_range(1000, 2000);
+
+	hns_nic_net_down(netdev);
+
+	/* Only do hns_nic_net_reset in debug mode
+	 * because of hardware limitation.
+	 */
+	if (type == HNAE_PORT_DEBUG)
+		hns_nic_net_reset(netdev);
+
+	(void)hns_nic_net_up(netdev);
+	clear_bit(NIC_STATE_REINITING, &priv->state);
+}
+
+static int hns_nic_net_open(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	int ret;
+
+	if (test_bit(NIC_STATE_TESTING, &priv->state))
+		return -EBUSY;
+
+	priv->link = 0;
+	netif_carrier_off(ndev);
+
+	ret = netif_set_real_num_tx_queues(ndev, h->q_num);
+	if (ret < 0) {
+		netdev_err(ndev, "netif_set_real_num_tx_queues fail, ret=%d!\n",
+			   ret);
+		return ret;
+	}
+
+	ret = netif_set_real_num_rx_queues(ndev, h->q_num);
+	if (ret < 0) {
+		netdev_err(ndev,
+			   "netif_set_real_num_rx_queues fail, ret=%d!\n", ret);
+		return ret;
+	}
+
+	ret = hns_nic_net_up(ndev);
+	if (ret) {
+		netdev_err(ndev,
+			   "hns net up fail, ret=%d!\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int hns_nic_net_stop(struct net_device *ndev)
+{
+	hns_nic_net_down(ndev);
+
+	return 0;
+}
+
+static void hns_tx_timeout_reset(struct hns_nic_priv *priv);
+#define HNS_TX_TIMEO_LIMIT (40 * HZ)
+static void hns_nic_net_timeout(struct net_device *ndev, unsigned int txqueue)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+
+	if (ndev->watchdog_timeo < HNS_TX_TIMEO_LIMIT) {
+		ndev->watchdog_timeo *= 2;
+		netdev_info(ndev, "watchdog_timo changed to %d.\n",
+			    ndev->watchdog_timeo);
+	} else {
+		ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
+		hns_tx_timeout_reset(priv);
+	}
+}
+
+static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
+				    struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+
+	assert(skb->queue_mapping < ndev->ae_handle->q_num);
+
+	return hns_nic_net_xmit_hw(ndev, skb,
+				   &tx_ring_data(priv, skb->queue_mapping));
+}
+
+static void hns_nic_drop_rx_fetch(struct hns_nic_ring_data *ring_data,
+				  struct sk_buff *skb)
+{
+	dev_kfree_skb_any(skb);
+}
+
+#define HNS_LB_TX_RING	0
+static struct sk_buff *hns_assemble_skb(struct net_device *ndev)
+{
+	struct sk_buff *skb;
+	struct ethhdr *ethhdr;
+	int frame_len;
+
+	/* allocate test skb */
+	skb = alloc_skb(64, GFP_KERNEL);
+	if (!skb)
+		return NULL;
+
+	skb_put(skb, 64);
+	skb->dev = ndev;
+	memset(skb->data, 0xFF, skb->len);
+
+	/* must be tcp/ip package */
+	ethhdr = (struct ethhdr *)skb->data;
+	ethhdr->h_proto = htons(ETH_P_IP);
+
+	frame_len = skb->len & (~1ul);
+	memset(&skb->data[frame_len / 2], 0xAA,
+	       frame_len / 2 - 1);
+
+	skb->queue_mapping = HNS_LB_TX_RING;
+
+	return skb;
+}
+
+static int hns_enable_serdes_lb(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	struct hnae_ae_ops *ops = h->dev->ops;
+	int speed, duplex;
+	int ret;
+
+	ret = ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 1);
+	if (ret)
+		return ret;
+
+	ret = ops->start ? ops->start(h) : 0;
+	if (ret)
+		return ret;
+
+	/* link adjust duplex*/
+	if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
+		speed = 1000;
+	else
+		speed = 10000;
+	duplex = 1;
+
+	ops->adjust_link(h, speed, duplex);
+
+	/* wait h/w ready */
+	mdelay(300);
+
+	return 0;
+}
+
+static void hns_disable_serdes_lb(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	struct hnae_ae_ops *ops = h->dev->ops;
+
+	ops->stop(h);
+	ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 0);
+}
+
+/**
+ *hns_nic_clear_all_rx_fetch - clear the chip fetched descriptions. The
+ *function as follows:
+ *    1. if one rx ring has found the page_offset is not equal 0 between head
+ *       and tail, it means that the chip fetched the wrong descs for the ring
+ *       which buffer size is 4096.
+ *    2. we set the chip serdes loopback and set rss indirection to the ring.
+ *    3. construct 64-bytes ip broadcast packages, wait the associated rx ring
+ *       recieving all packages and it will fetch new descriptions.
+ *    4. recover to the original state.
+ *
+ *@ndev: net device
+ */
+static int hns_nic_clear_all_rx_fetch(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	struct hnae_ae_ops *ops = h->dev->ops;
+	struct hns_nic_ring_data *rd;
+	struct hnae_ring *ring;
+	struct sk_buff *skb;
+	u32 *org_indir;
+	u32 *cur_indir;
+	int indir_size;
+	int head, tail;
+	int fetch_num;
+	int i, j;
+	bool found;
+	int retry_times;
+	int ret = 0;
+
+	/* alloc indir memory */
+	indir_size = ops->get_rss_indir_size(h) * sizeof(*org_indir);
+	org_indir = kzalloc(indir_size, GFP_KERNEL);
+	if (!org_indir)
+		return -ENOMEM;
+
+	/* store the orginal indirection */
+	ops->get_rss(h, org_indir, NULL, NULL);
+
+	cur_indir = kzalloc(indir_size, GFP_KERNEL);
+	if (!cur_indir) {
+		ret = -ENOMEM;
+		goto cur_indir_alloc_err;
+	}
+
+	/* set loopback */
+	if (hns_enable_serdes_lb(ndev)) {
+		ret = -EINVAL;
+		goto enable_serdes_lb_err;
+	}
+
+	/* foreach every rx ring to clear fetch desc */
+	for (i = 0; i < h->q_num; i++) {
+		ring = &h->qs[i]->rx_ring;
+		head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
+		tail = readl_relaxed(ring->io_base + RCB_REG_TAIL);
+		found = false;
+		fetch_num = ring_dist(ring, head, tail);
+
+		while (head != tail) {
+			if (ring->desc_cb[head].page_offset != 0) {
+				found = true;
+				break;
+			}
+
+			head++;
+			if (head == ring->desc_num)
+				head = 0;
+		}
+
+		if (found) {
+			for (j = 0; j < indir_size / sizeof(*org_indir); j++)
+				cur_indir[j] = i;
+			ops->set_rss(h, cur_indir, NULL, 0);
+
+			for (j = 0; j < fetch_num; j++) {
+				/* alloc one skb and init */
+				skb = hns_assemble_skb(ndev);
+				if (!skb) {
+					ret = -ENOMEM;
+					goto out;
+				}
+				rd = &tx_ring_data(priv, skb->queue_mapping);
+				hns_nic_net_xmit_hw(ndev, skb, rd);
+
+				retry_times = 0;
+				while (retry_times++ < 10) {
+					mdelay(10);
+					/* clean rx */
+					rd = &rx_ring_data(priv, i);
+					if (rd->poll_one(rd, fetch_num,
+							 hns_nic_drop_rx_fetch))
+						break;
+				}
+
+				retry_times = 0;
+				while (retry_times++ < 10) {
+					mdelay(10);
+					/* clean tx ring 0 send package */
+					rd = &tx_ring_data(priv,
+							   HNS_LB_TX_RING);
+					if (rd->poll_one(rd, fetch_num, NULL))
+						break;
+				}
+			}
+		}
+	}
+
+out:
+	/* restore everything */
+	ops->set_rss(h, org_indir, NULL, 0);
+	hns_disable_serdes_lb(ndev);
+enable_serdes_lb_err:
+	kfree(cur_indir);
+cur_indir_alloc_err:
+	kfree(org_indir);
+
+	return ret;
+}
+
+static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	bool if_running = netif_running(ndev);
+	int ret;
+
+	/* MTU < 68 is an error and causes problems on some kernels */
+	if (new_mtu < 68)
+		return -EINVAL;
+
+	/* MTU no change */
+	if (new_mtu == ndev->mtu)
+		return 0;
+
+	if (!h->dev->ops->set_mtu)
+		return -ENOTSUPP;
+
+	if (if_running) {
+		(void)hns_nic_net_stop(ndev);
+		msleep(100);
+	}
+
+	if (priv->enet_ver != AE_VERSION_1 &&
+	    ndev->mtu <= BD_SIZE_2048_MAX_MTU &&
+	    new_mtu > BD_SIZE_2048_MAX_MTU) {
+		/* update desc */
+		hnae_reinit_all_ring_desc(h);
+
+		/* clear the package which the chip has fetched */
+		ret = hns_nic_clear_all_rx_fetch(ndev);
+
+		/* the page offset must be consist with desc */
+		hnae_reinit_all_ring_page_off(h);
+
+		if (ret) {
+			netdev_err(ndev, "clear the fetched desc fail\n");
+			goto out;
+		}
+	}
+
+	ret = h->dev->ops->set_mtu(h, new_mtu);
+	if (ret) {
+		netdev_err(ndev, "set mtu fail, return value %d\n",
+			   ret);
+		goto out;
+	}
+
+	/* finally, set new mtu to netdevice */
+	ndev->mtu = new_mtu;
+
+out:
+	if (if_running) {
+		if (hns_nic_net_open(ndev)) {
+			netdev_err(ndev, "hns net open fail\n");
+			ret = -EINVAL;
+		}
+	}
+
+	return ret;
+}
+
+static int hns_nic_set_features(struct net_device *netdev,
+				netdev_features_t features)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+
+	switch (priv->enet_ver) {
+	case AE_VERSION_1:
+		if (features & (NETIF_F_TSO | NETIF_F_TSO6))
+			netdev_info(netdev, "enet v1 do not support tso!\n");
+		break;
+	default:
+		if (features & (NETIF_F_TSO | NETIF_F_TSO6)) {
+			priv->ops.fill_desc = fill_tso_desc;
+			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
+			/* The chip only support 7*4096 */
+			netif_set_gso_max_size(netdev, 7 * 4096);
+		} else {
+			priv->ops.fill_desc = fill_v2_desc;
+			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
+		}
+		break;
+	}
+	netdev->features = features;
+	return 0;
+}
+
+static netdev_features_t hns_nic_fix_features(
+		struct net_device *netdev, netdev_features_t features)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+
+	switch (priv->enet_ver) {
+	case AE_VERSION_1:
+		features &= ~(NETIF_F_TSO | NETIF_F_TSO6 |
+				NETIF_F_HW_VLAN_CTAG_FILTER);
+		break;
+	default:
+		break;
+	}
+	return features;
+}
+
+static int hns_nic_uc_sync(struct net_device *netdev, const unsigned char *addr)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+	struct hnae_handle *h = priv->ae_handle;
+
+	if (h->dev->ops->add_uc_addr)
+		return h->dev->ops->add_uc_addr(h, addr);
+
+	return 0;
+}
+
+static int hns_nic_uc_unsync(struct net_device *netdev,
+			     const unsigned char *addr)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+	struct hnae_handle *h = priv->ae_handle;
+
+	if (h->dev->ops->rm_uc_addr)
+		return h->dev->ops->rm_uc_addr(h, addr);
+
+	return 0;
+}
+
+/**
+ * hns_set_multicast_list - set mutl mac address
+ * @ndev: net device
+ *
+ * return void
+ */
+static void hns_set_multicast_list(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	struct netdev_hw_addr *ha = NULL;
+
+	if (!h)	{
+		netdev_err(ndev, "hnae handle is null\n");
+		return;
+	}
+
+	if (h->dev->ops->clr_mc_addr)
+		if (h->dev->ops->clr_mc_addr(h))
+			netdev_err(ndev, "clear multicast address fail\n");
+
+	if (h->dev->ops->set_mc_addr) {
+		netdev_for_each_mc_addr(ha, ndev)
+			if (h->dev->ops->set_mc_addr(h, ha->addr))
+				netdev_err(ndev, "set multicast fail\n");
+	}
+}
+
+static void hns_nic_set_rx_mode(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+
+	if (h->dev->ops->set_promisc_mode) {
+		if (ndev->flags & IFF_PROMISC)
+			h->dev->ops->set_promisc_mode(h, 1);
+		else
+			h->dev->ops->set_promisc_mode(h, 0);
+	}
+
+	hns_set_multicast_list(ndev);
+
+	if (__dev_uc_sync(ndev, hns_nic_uc_sync, hns_nic_uc_unsync))
+		netdev_err(ndev, "sync uc address fail\n");
+}
+
+static void hns_nic_get_stats64(struct net_device *ndev,
+				struct rtnl_link_stats64 *stats)
+{
+	int idx = 0;
+	u64 tx_bytes = 0;
+	u64 rx_bytes = 0;
+	u64 tx_pkts = 0;
+	u64 rx_pkts = 0;
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+
+	for (idx = 0; idx < h->q_num; idx++) {
+		tx_bytes += h->qs[idx]->tx_ring.stats.tx_bytes;
+		tx_pkts += h->qs[idx]->tx_ring.stats.tx_pkts;
+		rx_bytes += h->qs[idx]->rx_ring.stats.rx_bytes;
+		rx_pkts += h->qs[idx]->rx_ring.stats.rx_pkts;
+	}
+
+	stats->tx_bytes = tx_bytes;
+	stats->tx_packets = tx_pkts;
+	stats->rx_bytes = rx_bytes;
+	stats->rx_packets = rx_pkts;
+
+	stats->rx_errors = ndev->stats.rx_errors;
+	stats->multicast = ndev->stats.multicast;
+	stats->rx_length_errors = ndev->stats.rx_length_errors;
+	stats->rx_crc_errors = ndev->stats.rx_crc_errors;
+	stats->rx_missed_errors = ndev->stats.rx_missed_errors;
+
+	stats->tx_errors = ndev->stats.tx_errors;
+	stats->rx_dropped = ndev->stats.rx_dropped;
+	stats->tx_dropped = ndev->stats.tx_dropped;
+	stats->collisions = ndev->stats.collisions;
+	stats->rx_over_errors = ndev->stats.rx_over_errors;
+	stats->rx_frame_errors = ndev->stats.rx_frame_errors;
+	stats->rx_fifo_errors = ndev->stats.rx_fifo_errors;
+	stats->tx_aborted_errors = ndev->stats.tx_aborted_errors;
+	stats->tx_carrier_errors = ndev->stats.tx_carrier_errors;
+	stats->tx_fifo_errors = ndev->stats.tx_fifo_errors;
+	stats->tx_heartbeat_errors = ndev->stats.tx_heartbeat_errors;
+	stats->tx_window_errors = ndev->stats.tx_window_errors;
+	stats->rx_compressed = ndev->stats.rx_compressed;
+	stats->tx_compressed = ndev->stats.tx_compressed;
+}
+
+static u16
+hns_nic_select_queue(struct net_device *ndev, struct sk_buff *skb,
+		     struct net_device *sb_dev)
+{
+	struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+
+	/* fix hardware broadcast/multicast packets queue loopback */
+	if (!AE_IS_VER1(priv->enet_ver) &&
+	    is_multicast_ether_addr(eth_hdr->h_dest))
+		return 0;
+	else
+		return netdev_pick_tx(ndev, skb, NULL);
+}
+
+static const struct net_device_ops hns_nic_netdev_ops = {
+	.ndo_open = hns_nic_net_open,
+	.ndo_stop = hns_nic_net_stop,
+	.ndo_start_xmit = hns_nic_net_xmit,
+	.ndo_tx_timeout = hns_nic_net_timeout,
+	.ndo_set_mac_address = hns_nic_net_set_mac_address,
+	.ndo_change_mtu = hns_nic_change_mtu,
+	.ndo_do_ioctl = phy_do_ioctl_running,
+	.ndo_set_features = hns_nic_set_features,
+	.ndo_fix_features = hns_nic_fix_features,
+	.ndo_get_stats64 = hns_nic_get_stats64,
+	.ndo_set_rx_mode = hns_nic_set_rx_mode,
+	.ndo_select_queue = hns_nic_select_queue,
+};
+
+static void hns_nic_update_link_status(struct net_device *netdev)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+
+	struct hnae_handle *h = priv->ae_handle;
+
+	if (h->phy_dev) {
+		if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
+			return;
+
+		(void)genphy_read_status(h->phy_dev);
+	}
+	hns_nic_adjust_link(netdev);
+}
+
+/* for dumping key regs*/
+static void hns_nic_dump(struct hns_nic_priv *priv)
+{
+	struct hnae_handle *h = priv->ae_handle;
+	struct hnae_ae_ops *ops = h->dev->ops;
+	u32 *data, reg_num, i;
+
+	if (ops->get_regs_len && ops->get_regs) {
+		reg_num = ops->get_regs_len(priv->ae_handle);
+		reg_num = (reg_num + 3ul) & ~3ul;
+		data = kcalloc(reg_num, sizeof(u32), GFP_KERNEL);
+		if (data) {
+			ops->get_regs(priv->ae_handle, data);
+			for (i = 0; i < reg_num; i += 4)
+				pr_info("0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
+					i, data[i], data[i + 1],
+					data[i + 2], data[i + 3]);
+			kfree(data);
+		}
+	}
+
+	for (i = 0; i < h->q_num; i++) {
+		pr_info("tx_queue%d_next_to_clean:%d\n",
+			i, h->qs[i]->tx_ring.next_to_clean);
+		pr_info("tx_queue%d_next_to_use:%d\n",
+			i, h->qs[i]->tx_ring.next_to_use);
+		pr_info("rx_queue%d_next_to_clean:%d\n",
+			i, h->qs[i]->rx_ring.next_to_clean);
+		pr_info("rx_queue%d_next_to_use:%d\n",
+			i, h->qs[i]->rx_ring.next_to_use);
+	}
+}
+
+/* for resetting subtask */
+static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
+{
+	enum hnae_port_type type = priv->ae_handle->port_type;
+
+	if (!test_bit(NIC_STATE2_RESET_REQUESTED, &priv->state))
+		return;
+	clear_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
+
+	/* If we're already down, removing or resetting, just bail */
+	if (test_bit(NIC_STATE_DOWN, &priv->state) ||
+	    test_bit(NIC_STATE_REMOVING, &priv->state) ||
+	    test_bit(NIC_STATE_RESETTING, &priv->state))
+		return;
+
+	hns_nic_dump(priv);
+	netdev_info(priv->netdev, "try to reset %s port!\n",
+		    (type == HNAE_PORT_DEBUG ? "debug" : "service"));
+
+	rtnl_lock();
+	/* put off any impending NetWatchDogTimeout */
+	netif_trans_update(priv->netdev);
+	hns_nic_net_reinit(priv->netdev);
+
+	rtnl_unlock();
+}
+
+/* for doing service complete*/
+static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
+{
+	WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
+	/* make sure to commit the things */
+	smp_mb__before_atomic();
+	clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
+}
+
+static void hns_nic_service_task(struct work_struct *work)
+{
+	struct hns_nic_priv *priv
+		= container_of(work, struct hns_nic_priv, service_task);
+	struct hnae_handle *h = priv->ae_handle;
+
+	hns_nic_reset_subtask(priv);
+	hns_nic_update_link_status(priv->netdev);
+	h->dev->ops->update_led_status(h);
+	hns_nic_update_stats(priv->netdev);
+
+	hns_nic_service_event_complete(priv);
+}
+
+static void hns_nic_task_schedule(struct hns_nic_priv *priv)
+{
+	if (!test_bit(NIC_STATE_DOWN, &priv->state) &&
+	    !test_bit(NIC_STATE_REMOVING, &priv->state) &&
+	    !test_and_set_bit(NIC_STATE_SERVICE_SCHED, &priv->state))
+		(void)schedule_work(&priv->service_task);
+}
+
+static void hns_nic_service_timer(struct timer_list *t)
+{
+	struct hns_nic_priv *priv = from_timer(priv, t, service_timer);
+
+	(void)mod_timer(&priv->service_timer, jiffies + SERVICE_TIMER_HZ);
+
+	hns_nic_task_schedule(priv);
+}
+
+/**
+ * hns_tx_timeout_reset - initiate reset due to Tx timeout
+ * @priv: driver private struct
+ **/
+static void hns_tx_timeout_reset(struct hns_nic_priv *priv)
+{
+	/* Do the reset outside of interrupt context */
+	if (!test_bit(NIC_STATE_DOWN, &priv->state)) {
+		set_bit(NIC_STATE2_RESET_REQUESTED, &priv->state);
+		netdev_warn(priv->netdev,
+			    "initiating reset due to tx timeout(%llu,0x%lx)\n",
+			    priv->tx_timeout_count, priv->state);
+		priv->tx_timeout_count++;
+		hns_nic_task_schedule(priv);
+	}
+}
+
+static int hns_nic_init_ring_data(struct hns_nic_priv *priv)
+{
+	struct hnae_handle *h = priv->ae_handle;
+	struct hns_nic_ring_data *rd;
+	bool is_ver1 = AE_IS_VER1(priv->enet_ver);
+	int i;
+
+	if (h->q_num > NIC_MAX_Q_PER_VF) {
+		netdev_err(priv->netdev, "too much queue (%d)\n", h->q_num);
+		return -EINVAL;
+	}
+
+	priv->ring_data = kzalloc(array3_size(h->q_num,
+					      sizeof(*priv->ring_data), 2),
+				  GFP_KERNEL);
+	if (!priv->ring_data)
+		return -ENOMEM;
+
+	for (i = 0; i < h->q_num; i++) {
+		rd = &priv->ring_data[i];
+		rd->queue_index = i;
+		rd->ring = &h->qs[i]->tx_ring;
+		rd->poll_one = hns_nic_tx_poll_one;
+		rd->fini_process = is_ver1 ? hns_nic_tx_fini_pro :
+			hns_nic_tx_fini_pro_v2;
+
+		netif_napi_add(priv->netdev, &rd->napi,
+			       hns_nic_common_poll, NAPI_POLL_WEIGHT);
+		rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
+	}
+	for (i = h->q_num; i < h->q_num * 2; i++) {
+		rd = &priv->ring_data[i];
+		rd->queue_index = i - h->q_num;
+		rd->ring = &h->qs[i - h->q_num]->rx_ring;
+		rd->poll_one = hns_nic_rx_poll_one;
+		rd->ex_process = hns_nic_rx_up_pro;
+		rd->fini_process = is_ver1 ? hns_nic_rx_fini_pro :
+			hns_nic_rx_fini_pro_v2;
+
+		netif_napi_add(priv->netdev, &rd->napi,
+			       hns_nic_common_poll, NAPI_POLL_WEIGHT);
+		rd->ring->irq_init_flag = RCB_IRQ_NOT_INITED;
+	}
+
+	return 0;
+}
+
+static void hns_nic_uninit_ring_data(struct hns_nic_priv *priv)
+{
+	struct hnae_handle *h = priv->ae_handle;
+	int i;
+
+	for (i = 0; i < h->q_num * 2; i++) {
+		netif_napi_del(&priv->ring_data[i].napi);
+		if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
+			(void)irq_set_affinity_hint(
+				priv->ring_data[i].ring->irq,
+				NULL);
+			free_irq(priv->ring_data[i].ring->irq,
+				 &priv->ring_data[i]);
+		}
+
+		priv->ring_data[i].ring->irq_init_flag = RCB_IRQ_NOT_INITED;
+	}
+	kfree(priv->ring_data);
+}
+
+static void hns_nic_set_priv_ops(struct net_device *netdev)
+{
+	struct hns_nic_priv *priv = netdev_priv(netdev);
+	struct hnae_handle *h = priv->ae_handle;
+
+	if (AE_IS_VER1(priv->enet_ver)) {
+		priv->ops.fill_desc = fill_desc;
+		priv->ops.get_rxd_bnum = get_rx_desc_bnum;
+		priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
+	} else {
+		priv->ops.get_rxd_bnum = get_v2rx_desc_bnum;
+		if ((netdev->features & NETIF_F_TSO) ||
+		    (netdev->features & NETIF_F_TSO6)) {
+			priv->ops.fill_desc = fill_tso_desc;
+			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tso;
+			/* This chip only support 7*4096 */
+			netif_set_gso_max_size(netdev, 7 * 4096);
+		} else {
+			priv->ops.fill_desc = fill_v2_desc;
+			priv->ops.maybe_stop_tx = hns_nic_maybe_stop_tx;
+		}
+		/* enable tso when init
+		 * control tso on/off through TSE bit in bd
+		 */
+		h->dev->ops->set_tso_stats(h, 1);
+	}
+}
+
+static int hns_nic_try_get_ae(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h;
+	int ret;
+
+	h = hnae_get_handle(&priv->netdev->dev,
+			    priv->fwnode, priv->port_id, NULL);
+	if (IS_ERR_OR_NULL(h)) {
+		ret = -ENODEV;
+		dev_dbg(priv->dev, "has not handle, register notifier!\n");
+		goto out;
+	}
+	priv->ae_handle = h;
+
+	ret = hns_nic_init_phy(ndev, h);
+	if (ret) {
+		dev_err(priv->dev, "probe phy device fail!\n");
+		goto out_init_phy;
+	}
+
+	ret = hns_nic_init_ring_data(priv);
+	if (ret) {
+		ret = -ENOMEM;
+		goto out_init_ring_data;
+	}
+
+	hns_nic_set_priv_ops(ndev);
+
+	ret = register_netdev(ndev);
+	if (ret) {
+		dev_err(priv->dev, "probe register netdev fail!\n");
+		goto out_reg_ndev_fail;
+	}
+	return 0;
+
+out_reg_ndev_fail:
+	hns_nic_uninit_ring_data(priv);
+	priv->ring_data = NULL;
+out_init_phy:
+out_init_ring_data:
+	hnae_put_handle(priv->ae_handle);
+	priv->ae_handle = NULL;
+out:
+	return ret;
+}
+
+static int hns_nic_notifier_action(struct notifier_block *nb,
+				   unsigned long action, void *data)
+{
+	struct hns_nic_priv *priv =
+		container_of(nb, struct hns_nic_priv, notifier_block);
+
+	assert(action == HNAE_AE_REGISTER);
+
+	if (!hns_nic_try_get_ae(priv->netdev)) {
+		hnae_unregister_notifier(&priv->notifier_block);
+		priv->notifier_block.notifier_call = NULL;
+	}
+	return 0;
+}
+
+static int hns_nic_dev_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct net_device *ndev;
+	struct hns_nic_priv *priv;
+	u32 port_id;
+	int ret;
+
+	ndev = alloc_etherdev_mq(sizeof(struct hns_nic_priv), NIC_MAX_Q_PER_VF);
+	if (!ndev)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, ndev);
+
+	priv = netdev_priv(ndev);
+	priv->dev = dev;
+	priv->netdev = ndev;
+
+	if (dev_of_node(dev)) {
+		struct device_node *ae_node;
+
+		if (of_device_is_compatible(dev->of_node,
+					    "hisilicon,hns-nic-v1"))
+			priv->enet_ver = AE_VERSION_1;
+		else
+			priv->enet_ver = AE_VERSION_2;
+
+		ae_node = of_parse_phandle(dev->of_node, "ae-handle", 0);
+		if (!ae_node) {
+			ret = -ENODEV;
+			dev_err(dev, "not find ae-handle\n");
+			goto out_read_prop_fail;
+		}
+		priv->fwnode = &ae_node->fwnode;
+	} else if (is_acpi_node(dev->fwnode)) {
+		struct fwnode_reference_args args;
+
+		if (acpi_dev_found(hns_enet_acpi_match[0].id))
+			priv->enet_ver = AE_VERSION_1;
+		else if (acpi_dev_found(hns_enet_acpi_match[1].id))
+			priv->enet_ver = AE_VERSION_2;
+		else {
+			ret = -ENXIO;
+			goto out_read_prop_fail;
+		}
+
+		/* try to find port-idx-in-ae first */
+		ret = acpi_node_get_property_reference(dev->fwnode,
+						       "ae-handle", 0, &args);
+		if (ret) {
+			dev_err(dev, "not find ae-handle\n");
+			goto out_read_prop_fail;
+		}
+		if (!is_acpi_device_node(args.fwnode)) {
+			ret = -EINVAL;
+			goto out_read_prop_fail;
+		}
+		priv->fwnode = args.fwnode;
+	} else {
+		dev_err(dev, "cannot read cfg data from OF or acpi\n");
+		ret = -ENXIO;
+		goto out_read_prop_fail;
+	}
+
+	ret = device_property_read_u32(dev, "port-idx-in-ae", &port_id);
+	if (ret) {
+		/* only for old code compatible */
+		ret = device_property_read_u32(dev, "port-id", &port_id);
+		if (ret)
+			goto out_read_prop_fail;
+		/* for old dts, we need to caculate the port offset */
+		port_id = port_id < HNS_SRV_OFFSET ? port_id + HNS_DEBUG_OFFSET
+			: port_id - HNS_SRV_OFFSET;
+	}
+	priv->port_id = port_id;
+
+	hns_init_mac_addr(ndev);
+
+	ndev->watchdog_timeo = HNS_NIC_TX_TIMEOUT;
+	ndev->priv_flags |= IFF_UNICAST_FLT;
+	ndev->netdev_ops = &hns_nic_netdev_ops;
+	hns_ethtool_set_ops(ndev);
+
+	ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+		NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
+		NETIF_F_GRO;
+	ndev->vlan_features |=
+		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM;
+	ndev->vlan_features |= NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
+
+	/* MTU range: 68 - 9578 (v1) or 9706 (v2) */
+	ndev->min_mtu = MAC_MIN_MTU;
+	switch (priv->enet_ver) {
+	case AE_VERSION_2:
+		ndev->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_NTUPLE;
+		ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+			NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_GSO |
+			NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6;
+		ndev->vlan_features |= NETIF_F_TSO | NETIF_F_TSO6;
+		ndev->max_mtu = MAC_MAX_MTU_V2 -
+				(ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+		break;
+	default:
+		ndev->max_mtu = MAC_MAX_MTU -
+				(ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+		break;
+	}
+
+	SET_NETDEV_DEV(ndev, dev);
+
+	if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)))
+		dev_dbg(dev, "set mask to 64bit\n");
+	else
+		dev_err(dev, "set mask to 64bit fail!\n");
+
+	/* carrier off reporting is important to ethtool even BEFORE open */
+	netif_carrier_off(ndev);
+
+	timer_setup(&priv->service_timer, hns_nic_service_timer, 0);
+	INIT_WORK(&priv->service_task, hns_nic_service_task);
+
+	set_bit(NIC_STATE_SERVICE_INITED, &priv->state);
+	clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
+	set_bit(NIC_STATE_DOWN, &priv->state);
+
+	if (hns_nic_try_get_ae(priv->netdev)) {
+		priv->notifier_block.notifier_call = hns_nic_notifier_action;
+		ret = hnae_register_notifier(&priv->notifier_block);
+		if (ret) {
+			dev_err(dev, "register notifier fail!\n");
+			goto out_notify_fail;
+		}
+		dev_dbg(dev, "has not handle, register notifier!\n");
+	}
+
+	return 0;
+
+out_notify_fail:
+	(void)cancel_work_sync(&priv->service_task);
+out_read_prop_fail:
+	/* safe for ACPI FW */
+	of_node_put(to_of_node(priv->fwnode));
+	free_netdev(ndev);
+	return ret;
+}
+
+static int hns_nic_dev_remove(struct platform_device *pdev)
+{
+	struct net_device *ndev = platform_get_drvdata(pdev);
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+
+	if (ndev->reg_state != NETREG_UNINITIALIZED)
+		unregister_netdev(ndev);
+
+	if (priv->ring_data)
+		hns_nic_uninit_ring_data(priv);
+	priv->ring_data = NULL;
+
+	if (ndev->phydev)
+		phy_disconnect(ndev->phydev);
+
+	if (!IS_ERR_OR_NULL(priv->ae_handle))
+		hnae_put_handle(priv->ae_handle);
+	priv->ae_handle = NULL;
+	if (priv->notifier_block.notifier_call)
+		hnae_unregister_notifier(&priv->notifier_block);
+	priv->notifier_block.notifier_call = NULL;
+
+	set_bit(NIC_STATE_REMOVING, &priv->state);
+	(void)cancel_work_sync(&priv->service_task);
+
+	/* safe for ACPI FW */
+	of_node_put(to_of_node(priv->fwnode));
+
+	free_netdev(ndev);
+	return 0;
+}
+
+static const struct of_device_id hns_enet_of_match[] = {
+	{.compatible = "hisilicon,hns-nic-v1",},
+	{.compatible = "hisilicon,hns-nic-v2",},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, hns_enet_of_match);
+
+static struct platform_driver hns_nic_dev_driver = {
+	.driver = {
+		.name = "hns-nic",
+		.of_match_table = hns_enet_of_match,
+		.acpi_match_table = ACPI_PTR(hns_enet_acpi_match),
+	},
+	.probe = hns_nic_dev_probe,
+	.remove = hns_nic_dev_remove,
+};
+
+module_platform_driver(hns_nic_dev_driver);
+
+MODULE_DESCRIPTION("HISILICON HNS Ethernet driver");
+MODULE_AUTHOR("Hisilicon, Inc.");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:hns-nic");