Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) Support ipv6 checksum offload in sunvnet driver, from Shannon
    Nelson.

 2) Move to RB-tree instead of custom AVL code in inetpeer, from Eric
    Dumazet.

 3) Allow generic XDP to work on virtual devices, from John Fastabend.

 4) Add bpf device maps and XDP_REDIRECT, which can be used to build
    arbitrary switching frameworks using XDP. From John Fastabend.

 5) Remove UFO offloads from the tree, gave us little other than bugs.

 6) Remove the IPSEC flow cache, from Florian Westphal.

 7) Support ipv6 route offload in mlxsw driver.

 8) Support VF representors in bnxt_en, from Sathya Perla.

 9) Add support for forward error correction modes to ethtool, from
    Vidya Sagar Ravipati.

10) Add time filter for packet scheduler action dumping, from Jamal Hadi
    Salim.

11) Extend the zerocopy sendmsg() used by virtio and tap to regular
    sockets via MSG_ZEROCOPY. From Willem de Bruijn.

12) Significantly rework value tracking in the BPF verifier, from Edward
    Cree.

13) Add new jump instructions to eBPF, from Daniel Borkmann.

14) Rework rtnetlink plumbing so that operations can be run without
    taking the RTNL semaphore. From Florian Westphal.

15) Support XDP in tap driver, from Jason Wang.

16) Add 32-bit eBPF JIT for ARM, from Shubham Bansal.

17) Add Huawei hinic ethernet driver.

18) Allow to report MD5 keys in TCP inet_diag dumps, from Ivan
    Delalande.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1780 commits)
  i40e: point wb_desc at the nvm_wb_desc during i40e_read_nvm_aq
  i40e: avoid NVM acquire deadlock during NVM update
  drivers: net: xgene: Remove return statement from void function
  drivers: net: xgene: Configure tx/rx delay for ACPI
  drivers: net: xgene: Read tx/rx delay for ACPI
  rocker: fix kcalloc parameter order
  rds: Fix non-atomic operation on shared flag variable
  net: sched: don't use GFP_KERNEL under spin lock
  vhost_net: correctly check tx avail during rx busy polling
  net: mdio-mux: add mdio_mux parameter to mdio_mux_init()
  rxrpc: Make service connection lookup always check for retry
  net: stmmac: Delete dead code for MDIO registration
  gianfar: Fix Tx flow control deactivation
  cxgb4: Ignore MPS_TX_INT_CAUSE[Bubble] for T6
  cxgb4: Fix pause frame count in t4_get_port_stats
  cxgb4: fix memory leak
  tun: rename generic_xdp to skb_xdp
  tun: reserve extra headroom only when XDP is set
  net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping
  net: dsa: bcm_sf2: Advertise number of egress queues
  ...

1 files changed, 1112 insertions, 0 deletions

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
new file mode 100644
index 000000000000..eb53bd93065e
--- /dev/null
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -0,0 +1,1112 @@
+/*
+ * Huawei HiNIC PCI Express Linux driver
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/etherdevice.h>
+#include <linux/netdevice.h>
+#include <linux/slab.h>
+#include <linux/if_vlan.h>
+#include <linux/semaphore.h>
+#include <linux/workqueue.h>
+#include <net/ip.h>
+#include <linux/bitops.h>
+#include <linux/bitmap.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+
+#include "hinic_hw_qp.h"
+#include "hinic_hw_dev.h"
+#include "hinic_port.h"
+#include "hinic_tx.h"
+#include "hinic_rx.h"
+#include "hinic_dev.h"
+
+MODULE_AUTHOR("Huawei Technologies CO., Ltd");
+MODULE_DESCRIPTION("Huawei Intelligent NIC driver");
+MODULE_LICENSE("GPL");
+
+static unsigned int tx_weight = 64;
+module_param(tx_weight, uint, 0644);
+MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)");
+
+static unsigned int rx_weight = 64;
+module_param(rx_weight, uint, 0644);
+MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)");
+
+#define PCI_DEVICE_ID_HI1822_PF         0x1822
+
+#define HINIC_WQ_NAME                   "hinic_dev"
+
+#define MSG_ENABLE_DEFAULT              (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
+					 NETIF_MSG_IFUP |                  \
+					 NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
+
+#define VLAN_BITMAP_SIZE(nic_dev)       (ALIGN(VLAN_N_VID, 8) / 8)
+
+#define work_to_rx_mode_work(work)      \
+		container_of(work, struct hinic_rx_mode_work, work)
+
+#define rx_mode_work_to_nic_dev(rx_mode_work) \
+		container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
+
+static int change_mac_addr(struct net_device *netdev, const u8 *addr);
+
+static void set_link_speed(struct ethtool_link_ksettings *link_ksettings,
+			   enum hinic_speed speed)
+{
+	switch (speed) {
+	case HINIC_SPEED_10MB_LINK:
+		link_ksettings->base.speed = SPEED_10;
+		break;
+
+	case HINIC_SPEED_100MB_LINK:
+		link_ksettings->base.speed = SPEED_100;
+		break;
+
+	case HINIC_SPEED_1000MB_LINK:
+		link_ksettings->base.speed = SPEED_1000;
+		break;
+
+	case HINIC_SPEED_10GB_LINK:
+		link_ksettings->base.speed = SPEED_10000;
+		break;
+
+	case HINIC_SPEED_25GB_LINK:
+		link_ksettings->base.speed = SPEED_25000;
+		break;
+
+	case HINIC_SPEED_40GB_LINK:
+		link_ksettings->base.speed = SPEED_40000;
+		break;
+
+	case HINIC_SPEED_100GB_LINK:
+		link_ksettings->base.speed = SPEED_100000;
+		break;
+
+	default:
+		link_ksettings->base.speed = SPEED_UNKNOWN;
+		break;
+	}
+}
+
+static int hinic_get_link_ksettings(struct net_device *netdev,
+				    struct ethtool_link_ksettings
+				    *link_ksettings)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	enum hinic_port_link_state link_state;
+	struct hinic_port_cap port_cap;
+	int err;
+
+	ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
+	ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
+					     Autoneg);
+
+	link_ksettings->base.speed   = SPEED_UNKNOWN;
+	link_ksettings->base.autoneg = AUTONEG_DISABLE;
+	link_ksettings->base.duplex  = DUPLEX_UNKNOWN;
+
+	err = hinic_port_get_cap(nic_dev, &port_cap);
+	if (err) {
+		netif_err(nic_dev, drv, netdev,
+			  "Failed to get port capabilities\n");
+		return err;
+	}
+
+	err = hinic_port_link_state(nic_dev, &link_state);
+	if (err) {
+		netif_err(nic_dev, drv, netdev,
+			  "Failed to get port link state\n");
+		return err;
+	}
+
+	if (link_state != HINIC_LINK_STATE_UP) {
+		netif_info(nic_dev, drv, netdev, "No link\n");
+		return err;
+	}
+
+	set_link_speed(link_ksettings, port_cap.speed);
+
+	if (!!(port_cap.autoneg_cap & HINIC_AUTONEG_SUPPORTED))
+		ethtool_link_ksettings_add_link_mode(link_ksettings,
+						     advertising, Autoneg);
+
+	if (port_cap.autoneg_state == HINIC_AUTONEG_ACTIVE)
+		link_ksettings->base.autoneg = AUTONEG_ENABLE;
+
+	link_ksettings->base.duplex = (port_cap.duplex == HINIC_DUPLEX_FULL) ?
+				       DUPLEX_FULL : DUPLEX_HALF;
+	return 0;
+}
+
+static void hinic_get_drvinfo(struct net_device *netdev,
+			      struct ethtool_drvinfo *info)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+	struct hinic_hwif *hwif = hwdev->hwif;
+
+	strlcpy(info->driver, HINIC_DRV_NAME, sizeof(info->driver));
+	strlcpy(info->bus_info, pci_name(hwif->pdev), sizeof(info->bus_info));
+}
+
+static void hinic_get_ringparam(struct net_device *netdev,
+				struct ethtool_ringparam *ring)
+{
+	ring->rx_max_pending = HINIC_RQ_DEPTH;
+	ring->tx_max_pending = HINIC_SQ_DEPTH;
+	ring->rx_pending = HINIC_RQ_DEPTH;
+	ring->tx_pending = HINIC_SQ_DEPTH;
+}
+
+static void hinic_get_channels(struct net_device *netdev,
+			       struct ethtool_channels *channels)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+
+	channels->max_rx = hwdev->nic_cap.max_qps;
+	channels->max_tx = hwdev->nic_cap.max_qps;
+	channels->max_other    = 0;
+	channels->max_combined = 0;
+	channels->rx_count = hinic_hwdev_num_qps(hwdev);
+	channels->tx_count = hinic_hwdev_num_qps(hwdev);
+	channels->other_count    = 0;
+	channels->combined_count = 0;
+}
+
+static const struct ethtool_ops hinic_ethtool_ops = {
+	.get_link_ksettings = hinic_get_link_ksettings,
+	.get_drvinfo = hinic_get_drvinfo,
+	.get_link = ethtool_op_get_link,
+	.get_ringparam = hinic_get_ringparam,
+	.get_channels = hinic_get_channels,
+};
+
+static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq)
+{
+	struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats;
+	struct hinic_rxq_stats rx_stats;
+
+	u64_stats_init(&rx_stats.syncp);
+
+	hinic_rxq_get_stats(rxq, &rx_stats);
+
+	u64_stats_update_begin(&nic_rx_stats->syncp);
+	nic_rx_stats->bytes += rx_stats.bytes;
+	nic_rx_stats->pkts  += rx_stats.pkts;
+	u64_stats_update_end(&nic_rx_stats->syncp);
+
+	hinic_rxq_clean_stats(rxq);
+}
+
+static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq)
+{
+	struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats;
+	struct hinic_txq_stats tx_stats;
+
+	u64_stats_init(&tx_stats.syncp);
+
+	hinic_txq_get_stats(txq, &tx_stats);
+
+	u64_stats_update_begin(&nic_tx_stats->syncp);
+	nic_tx_stats->bytes += tx_stats.bytes;
+	nic_tx_stats->pkts += tx_stats.pkts;
+	nic_tx_stats->tx_busy += tx_stats.tx_busy;
+	nic_tx_stats->tx_wake += tx_stats.tx_wake;
+	nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
+	u64_stats_update_end(&nic_tx_stats->syncp);
+
+	hinic_txq_clean_stats(txq);
+}
+
+static void update_nic_stats(struct hinic_dev *nic_dev)
+{
+	int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
+
+	for (i = 0; i < num_qps; i++)
+		update_rx_stats(nic_dev, &nic_dev->rxqs[i]);
+
+	for (i = 0; i < num_qps; i++)
+		update_tx_stats(nic_dev, &nic_dev->txqs[i]);
+}
+
+/**
+ * create_txqs - Create the Logical Tx Queues of specific NIC device
+ * @nic_dev: the specific NIC device
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+static int create_txqs(struct hinic_dev *nic_dev)
+{
+	int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
+	struct net_device *netdev = nic_dev->netdev;
+	size_t txq_size;
+
+	if (nic_dev->txqs)
+		return -EINVAL;
+
+	txq_size = num_txqs * sizeof(*nic_dev->txqs);
+	nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL);
+	if (!nic_dev->txqs)
+		return -ENOMEM;
+
+	for (i = 0; i < num_txqs; i++) {
+		struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
+
+		err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
+		if (err) {
+			netif_err(nic_dev, drv, netdev,
+				  "Failed to init Txq\n");
+			goto err_init_txq;
+		}
+	}
+
+	return 0;
+
+err_init_txq:
+	for (j = 0; j < i; j++)
+		hinic_clean_txq(&nic_dev->txqs[j]);
+
+	devm_kfree(&netdev->dev, nic_dev->txqs);
+	return err;
+}
+
+/**
+ * free_txqs - Free the Logical Tx Queues of specific NIC device
+ * @nic_dev: the specific NIC device
+ **/
+static void free_txqs(struct hinic_dev *nic_dev)
+{
+	int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
+	struct net_device *netdev = nic_dev->netdev;
+
+	if (!nic_dev->txqs)
+		return;
+
+	for (i = 0; i < num_txqs; i++)
+		hinic_clean_txq(&nic_dev->txqs[i]);
+
+	devm_kfree(&netdev->dev, nic_dev->txqs);
+	nic_dev->txqs = NULL;
+}
+
+/**
+ * create_txqs - Create the Logical Rx Queues of specific NIC device
+ * @nic_dev: the specific NIC device
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+static int create_rxqs(struct hinic_dev *nic_dev)
+{
+	int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
+	struct net_device *netdev = nic_dev->netdev;
+	size_t rxq_size;
+
+	if (nic_dev->rxqs)
+		return -EINVAL;
+
+	rxq_size = num_rxqs * sizeof(*nic_dev->rxqs);
+	nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL);
+	if (!nic_dev->rxqs)
+		return -ENOMEM;
+
+	for (i = 0; i < num_rxqs; i++) {
+		struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
+
+		err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
+		if (err) {
+			netif_err(nic_dev, drv, netdev,
+				  "Failed to init rxq\n");
+			goto err_init_rxq;
+		}
+	}
+
+	return 0;
+
+err_init_rxq:
+	for (j = 0; j < i; j++)
+		hinic_clean_rxq(&nic_dev->rxqs[j]);
+
+	devm_kfree(&netdev->dev, nic_dev->rxqs);
+	return err;
+}
+
+/**
+ * free_txqs - Free the Logical Rx Queues of specific NIC device
+ * @nic_dev: the specific NIC device
+ **/
+static void free_rxqs(struct hinic_dev *nic_dev)
+{
+	int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
+	struct net_device *netdev = nic_dev->netdev;
+
+	if (!nic_dev->rxqs)
+		return;
+
+	for (i = 0; i < num_rxqs; i++)
+		hinic_clean_rxq(&nic_dev->rxqs[i]);
+
+	devm_kfree(&netdev->dev, nic_dev->rxqs);
+	nic_dev->rxqs = NULL;
+}
+
+static int hinic_open(struct net_device *netdev)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	enum hinic_port_link_state link_state;
+	int err, ret, num_qps;
+
+	if (!(nic_dev->flags & HINIC_INTF_UP)) {
+		err = hinic_hwdev_ifup(nic_dev->hwdev);
+		if (err) {
+			netif_err(nic_dev, drv, netdev,
+				  "Failed - HW interface up\n");
+			return err;
+		}
+	}
+
+	err = create_txqs(nic_dev);
+	if (err) {
+		netif_err(nic_dev, drv, netdev,
+			  "Failed to create Tx queues\n");
+		goto err_create_txqs;
+	}
+
+	err = create_rxqs(nic_dev);
+	if (err) {
+		netif_err(nic_dev, drv, netdev,
+			  "Failed to create Rx queues\n");
+		goto err_create_rxqs;
+	}
+
+	num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
+	netif_set_real_num_tx_queues(netdev, num_qps);
+	netif_set_real_num_rx_queues(netdev, num_qps);
+
+	err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
+	if (err) {
+		netif_err(nic_dev, drv, netdev,
+			  "Failed to set port state\n");
+		goto err_port_state;
+	}
+
+	err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
+	if (err) {
+		netif_err(nic_dev, drv, netdev,
+			  "Failed to set func port state\n");
+		goto err_func_port_state;
+	}
+
+	/* Wait up to 3 sec between port enable to link state */
+	msleep(3000);
+
+	down(&nic_dev->mgmt_lock);
+
+	err = hinic_port_link_state(nic_dev, &link_state);
+	if (err) {
+		netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
+		goto err_port_link;
+	}
+
+	if (link_state == HINIC_LINK_STATE_UP)
+		nic_dev->flags |= HINIC_LINK_UP;
+
+	nic_dev->flags |= HINIC_INTF_UP;
+
+	if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
+	    (HINIC_LINK_UP | HINIC_INTF_UP)) {
+		netif_info(nic_dev, drv, netdev, "link + intf UP\n");
+		netif_carrier_on(netdev);
+		netif_tx_wake_all_queues(netdev);
+	}
+
+	up(&nic_dev->mgmt_lock);
+
+	netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
+	return 0;
+
+err_port_link:
+	up(&nic_dev->mgmt_lock);
+	ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
+	if (ret)
+		netif_warn(nic_dev, drv, netdev,
+			   "Failed to revert func port state\n");
+
+err_func_port_state:
+	ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
+	if (ret)
+		netif_warn(nic_dev, drv, netdev,
+			   "Failed to revert port state\n");
+
+err_port_state:
+	free_rxqs(nic_dev);
+
+err_create_rxqs:
+	free_txqs(nic_dev);
+
+err_create_txqs:
+	if (!(nic_dev->flags & HINIC_INTF_UP))
+		hinic_hwdev_ifdown(nic_dev->hwdev);
+	return err;
+}
+
+static int hinic_close(struct net_device *netdev)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	unsigned int flags;
+	int err;
+
+	down(&nic_dev->mgmt_lock);
+
+	flags = nic_dev->flags;
+	nic_dev->flags &= ~HINIC_INTF_UP;
+
+	netif_carrier_off(netdev);
+	netif_tx_disable(netdev);
+
+	update_nic_stats(nic_dev);
+
+	up(&nic_dev->mgmt_lock);
+
+	err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
+	if (err) {
+		netif_err(nic_dev, drv, netdev,
+			  "Failed to set func port state\n");
+		nic_dev->flags |= (flags & HINIC_INTF_UP);
+		return err;
+	}
+
+	err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
+	if (err) {
+		netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
+		nic_dev->flags |= (flags & HINIC_INTF_UP);
+		return err;
+	}
+
+	free_rxqs(nic_dev);
+	free_txqs(nic_dev);
+
+	if (flags & HINIC_INTF_UP)
+		hinic_hwdev_ifdown(nic_dev->hwdev);
+
+	netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
+	return 0;
+}
+
+static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	int err;
+
+	netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
+
+	err = hinic_port_set_mtu(nic_dev, new_mtu);
+	if (err)
+		netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
+	else
+		netdev->mtu = new_mtu;
+
+	return err;
+}
+
+/**
+ * change_mac_addr - change the main mac address of network device
+ * @netdev: network device
+ * @addr: mac address to set
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+static int change_mac_addr(struct net_device *netdev, const u8 *addr)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	u16 vid = 0;
+	int err;
+
+	if (!is_valid_ether_addr(addr))
+		return -EADDRNOTAVAIL;
+
+	netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
+		   addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
+
+	down(&nic_dev->mgmt_lock);
+
+	do {
+		err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
+		if (err) {
+			netif_err(nic_dev, drv, netdev,
+				  "Failed to delete mac\n");
+			break;
+		}
+
+		err = hinic_port_add_mac(nic_dev, addr, vid);
+		if (err) {
+			netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
+			break;
+		}
+
+		vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
+	} while (vid != VLAN_N_VID);
+
+	up(&nic_dev->mgmt_lock);
+	return err;
+}
+
+static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
+{
+	unsigned char new_mac[ETH_ALEN];
+	struct sockaddr *saddr = addr;
+	int err;
+
+	memcpy(new_mac, saddr->sa_data, ETH_ALEN);
+
+	err = change_mac_addr(netdev, new_mac);
+	if (!err)
+		memcpy(netdev->dev_addr, new_mac, ETH_ALEN);
+
+	return err;
+}
+
+/**
+ * add_mac_addr - add mac address to network device
+ * @netdev: network device
+ * @addr: mac address to add
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+static int add_mac_addr(struct net_device *netdev, const u8 *addr)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	u16 vid = 0;
+	int err;
+
+	if (!is_valid_ether_addr(addr))
+		return -EADDRNOTAVAIL;
+
+	netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
+		   addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
+
+	down(&nic_dev->mgmt_lock);
+
+	do {
+		err = hinic_port_add_mac(nic_dev, addr, vid);
+		if (err) {
+			netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
+			break;
+		}
+
+		vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
+	} while (vid != VLAN_N_VID);
+
+	up(&nic_dev->mgmt_lock);
+	return err;
+}
+
+/**
+ * remove_mac_addr - remove mac address from network device
+ * @netdev: network device
+ * @addr: mac address to remove
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	u16 vid = 0;
+	int err;
+
+	if (!is_valid_ether_addr(addr))
+		return -EADDRNOTAVAIL;
+
+	netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
+		   addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
+
+	down(&nic_dev->mgmt_lock);
+
+	do {
+		err = hinic_port_del_mac(nic_dev, addr, vid);
+		if (err) {
+			netif_err(nic_dev, drv, netdev,
+				  "Failed to delete mac\n");
+			break;
+		}
+
+		vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
+	} while (vid != VLAN_N_VID);
+
+	up(&nic_dev->mgmt_lock);
+	return err;
+}
+
+static int hinic_vlan_rx_add_vid(struct net_device *netdev,
+				 __always_unused __be16 proto, u16 vid)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	int ret, err;
+
+	netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
+
+	down(&nic_dev->mgmt_lock);
+
+	err = hinic_port_add_vlan(nic_dev, vid);
+	if (err) {
+		netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
+		goto err_vlan_add;
+	}
+
+	err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
+	if (err) {
+		netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
+		goto err_add_mac;
+	}
+
+	bitmap_set(nic_dev->vlan_bitmap, vid, 1);
+
+	up(&nic_dev->mgmt_lock);
+	return 0;
+
+err_add_mac:
+	ret = hinic_port_del_vlan(nic_dev, vid);
+	if (ret)
+		netif_err(nic_dev, drv, netdev,
+			  "Failed to revert by removing vlan\n");
+
+err_vlan_add:
+	up(&nic_dev->mgmt_lock);
+	return err;
+}
+
+static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
+				  __always_unused __be16 proto, u16 vid)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	int err;
+
+	netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
+
+	down(&nic_dev->mgmt_lock);
+
+	err = hinic_port_del_vlan(nic_dev, vid);
+	if (err) {
+		netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
+		goto err_del_vlan;
+	}
+
+	bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
+
+	up(&nic_dev->mgmt_lock);
+	return 0;
+
+err_del_vlan:
+	up(&nic_dev->mgmt_lock);
+	return err;
+}
+
+static void set_rx_mode(struct work_struct *work)
+{
+	struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
+	struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
+
+	netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
+
+	hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
+
+	__dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
+	__dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
+}
+
+static void hinic_set_rx_mode(struct net_device *netdev)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic_rx_mode_work *rx_mode_work;
+	u32 rx_mode;
+
+	rx_mode_work = &nic_dev->rx_mode_work;
+
+	rx_mode = HINIC_RX_MODE_UC |
+		  HINIC_RX_MODE_MC |
+		  HINIC_RX_MODE_BC;
+
+	if (netdev->flags & IFF_PROMISC)
+		rx_mode |= HINIC_RX_MODE_PROMISC;
+	else if (netdev->flags & IFF_ALLMULTI)
+		rx_mode |= HINIC_RX_MODE_MC_ALL;
+
+	rx_mode_work->rx_mode = rx_mode;
+
+	queue_work(nic_dev->workq, &rx_mode_work->work);
+}
+
+static void hinic_tx_timeout(struct net_device *netdev)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+
+	netif_err(nic_dev, drv, netdev, "Tx timeout\n");
+}
+
+static void hinic_get_stats64(struct net_device *netdev,
+			      struct rtnl_link_stats64 *stats)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic_rxq_stats *nic_rx_stats;
+	struct hinic_txq_stats *nic_tx_stats;
+
+	nic_rx_stats = &nic_dev->rx_stats;
+	nic_tx_stats = &nic_dev->tx_stats;
+
+	down(&nic_dev->mgmt_lock);
+
+	if (nic_dev->flags & HINIC_INTF_UP)
+		update_nic_stats(nic_dev);
+
+	up(&nic_dev->mgmt_lock);
+
+	stats->rx_bytes   = nic_rx_stats->bytes;
+	stats->rx_packets = nic_rx_stats->pkts;
+
+	stats->tx_bytes   = nic_tx_stats->bytes;
+	stats->tx_packets = nic_tx_stats->pkts;
+	stats->tx_errors  = nic_tx_stats->tx_dropped;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void hinic_netpoll(struct net_device *netdev)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	int i, num_qps;
+
+	num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
+	for (i = 0; i < num_qps; i++) {
+		struct hinic_txq *txq = &nic_dev->txqs[i];
+		struct hinic_rxq *rxq = &nic_dev->rxqs[i];
+
+		napi_schedule(&txq->napi);
+		napi_schedule(&rxq->napi);
+	}
+}
+#endif
+
+static const struct net_device_ops hinic_netdev_ops = {
+	.ndo_open = hinic_open,
+	.ndo_stop = hinic_close,
+	.ndo_change_mtu = hinic_change_mtu,
+	.ndo_set_mac_address = hinic_set_mac_addr,
+	.ndo_validate_addr = eth_validate_addr,
+	.ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
+	.ndo_set_rx_mode = hinic_set_rx_mode,
+	.ndo_start_xmit = hinic_xmit_frame,
+	.ndo_tx_timeout = hinic_tx_timeout,
+	.ndo_get_stats64 = hinic_get_stats64,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller = hinic_netpoll,
+#endif
+};
+
+static void netdev_features_init(struct net_device *netdev)
+{
+	netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA;
+
+	netdev->vlan_features = netdev->hw_features;
+
+	netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
+}
+
+/**
+ * link_status_event_handler - link event handler
+ * @handle: nic device for the handler
+ * @buf_in: input buffer
+ * @in_size: input size
+ * @buf_in: output buffer
+ * @out_size: returned output size
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
+				      void *buf_out, u16 *out_size)
+{
+	struct hinic_port_link_status *link_status, *ret_link_status;
+	struct hinic_dev *nic_dev = handle;
+
+	link_status = buf_in;
+
+	if (link_status->link == HINIC_LINK_STATE_UP) {
+		down(&nic_dev->mgmt_lock);
+
+		nic_dev->flags |= HINIC_LINK_UP;
+
+		if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
+		    (HINIC_LINK_UP | HINIC_INTF_UP)) {
+			netif_carrier_on(nic_dev->netdev);
+			netif_tx_wake_all_queues(nic_dev->netdev);
+		}
+
+		up(&nic_dev->mgmt_lock);
+
+		netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
+	} else {
+		down(&nic_dev->mgmt_lock);
+
+		nic_dev->flags &= ~HINIC_LINK_UP;
+
+		netif_carrier_off(nic_dev->netdev);
+		netif_tx_disable(nic_dev->netdev);
+
+		up(&nic_dev->mgmt_lock);
+
+		netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
+	}
+
+	ret_link_status = buf_out;
+	ret_link_status->status = 0;
+
+	*out_size = sizeof(*ret_link_status);
+}
+
+/**
+ * nic_dev_init - Initialize the NIC device
+ * @pdev: the NIC pci device
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+static int nic_dev_init(struct pci_dev *pdev)
+{
+	struct hinic_rx_mode_work *rx_mode_work;
+	struct hinic_txq_stats *tx_stats;
+	struct hinic_rxq_stats *rx_stats;
+	struct hinic_dev *nic_dev;
+	struct net_device *netdev;
+	struct hinic_hwdev *hwdev;
+	int err, num_qps;
+
+	hwdev = hinic_init_hwdev(pdev);
+	if (IS_ERR(hwdev)) {
+		dev_err(&pdev->dev, "Failed to initialize HW device\n");
+		return PTR_ERR(hwdev);
+	}
+
+	num_qps = hinic_hwdev_num_qps(hwdev);
+	if (num_qps <= 0) {
+		dev_err(&pdev->dev, "Invalid number of QPS\n");
+		err = -EINVAL;
+		goto err_num_qps;
+	}
+
+	netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
+	if (!netdev) {
+		dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
+		err = -ENOMEM;
+		goto err_alloc_etherdev;
+	}
+
+	netdev->netdev_ops = &hinic_netdev_ops;
+	netdev->ethtool_ops = &hinic_ethtool_ops;
+	netdev->max_mtu = ETH_MAX_MTU;
+
+	nic_dev = netdev_priv(netdev);
+	nic_dev->netdev = netdev;
+	nic_dev->hwdev  = hwdev;
+	nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
+	nic_dev->flags = 0;
+	nic_dev->txqs = NULL;
+	nic_dev->rxqs = NULL;
+	nic_dev->tx_weight = tx_weight;
+	nic_dev->rx_weight = rx_weight;
+
+	sema_init(&nic_dev->mgmt_lock, 1);
+
+	tx_stats = &nic_dev->tx_stats;
+	rx_stats = &nic_dev->rx_stats;
+
+	u64_stats_init(&tx_stats->syncp);
+	u64_stats_init(&rx_stats->syncp);
+
+	nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
+					    VLAN_BITMAP_SIZE(nic_dev),
+					    GFP_KERNEL);
+	if (!nic_dev->vlan_bitmap) {
+		err = -ENOMEM;
+		goto err_vlan_bitmap;
+	}
+
+	nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
+	if (!nic_dev->workq) {
+		err = -ENOMEM;
+		goto err_workq;
+	}
+
+	pci_set_drvdata(pdev, netdev);
+
+	err = hinic_port_get_mac(nic_dev, netdev->dev_addr);
+	if (err)
+		dev_warn(&pdev->dev, "Failed to get mac address\n");
+
+	err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to add mac\n");
+		goto err_add_mac;
+	}
+
+	err = hinic_port_set_mtu(nic_dev, netdev->mtu);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to set mtu\n");
+		goto err_set_mtu;
+	}
+
+	rx_mode_work = &nic_dev->rx_mode_work;
+	INIT_WORK(&rx_mode_work->work, set_rx_mode);
+
+	netdev_features_init(netdev);
+
+	netif_carrier_off(netdev);
+
+	hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
+				nic_dev, link_status_event_handler);
+
+	err = register_netdev(netdev);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to register netdev\n");
+		goto err_reg_netdev;
+	}
+
+	return 0;
+
+err_reg_netdev:
+	hinic_hwdev_cb_unregister(nic_dev->hwdev,
+				  HINIC_MGMT_MSG_CMD_LINK_STATUS);
+	cancel_work_sync(&rx_mode_work->work);
+
+err_set_mtu:
+err_add_mac:
+	pci_set_drvdata(pdev, NULL);
+	destroy_workqueue(nic_dev->workq);
+
+err_workq:
+err_vlan_bitmap:
+	free_netdev(netdev);
+
+err_alloc_etherdev:
+err_num_qps:
+	hinic_free_hwdev(hwdev);
+	return err;
+}
+
+static int hinic_probe(struct pci_dev *pdev,
+		       const struct pci_device_id *id)
+{
+	int err = pci_enable_device(pdev);
+
+	if (err) {
+		dev_err(&pdev->dev, "Failed to enable PCI device\n");
+		return err;
+	}
+
+	err = pci_request_regions(pdev, HINIC_DRV_NAME);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to request PCI regions\n");
+		goto err_pci_regions;
+	}
+
+	pci_set_master(pdev);
+
+	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+	if (err) {
+		dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n");
+		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (err) {
+			dev_err(&pdev->dev, "Failed to set DMA mask\n");
+			goto err_dma_mask;
+		}
+	}
+
+	err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+	if (err) {
+		dev_warn(&pdev->dev,
+			 "Couldn't set 64-bit consistent DMA mask\n");
+		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (err) {
+			dev_err(&pdev->dev,
+				"Failed to set consistent DMA mask\n");
+			goto err_dma_consistent_mask;
+		}
+	}
+
+	err = nic_dev_init(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to initialize NIC device\n");
+		goto err_nic_dev_init;
+	}
+
+	dev_info(&pdev->dev, "HiNIC driver - probed\n");
+	return 0;
+
+err_nic_dev_init:
+err_dma_consistent_mask:
+err_dma_mask:
+	pci_release_regions(pdev);
+
+err_pci_regions:
+	pci_disable_device(pdev);
+	return err;
+}
+
+static void hinic_remove(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic_rx_mode_work *rx_mode_work;
+
+	unregister_netdev(netdev);
+
+	hinic_hwdev_cb_unregister(nic_dev->hwdev,
+				  HINIC_MGMT_MSG_CMD_LINK_STATUS);
+
+	rx_mode_work = &nic_dev->rx_mode_work;
+	cancel_work_sync(&rx_mode_work->work);
+
+	pci_set_drvdata(pdev, NULL);
+
+	destroy_workqueue(nic_dev->workq);
+
+	hinic_free_hwdev(nic_dev->hwdev);
+
+	free_netdev(netdev);
+
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+
+	dev_info(&pdev->dev, "HiNIC driver - removed\n");
+}
+
+static const struct pci_device_id hinic_pci_table[] = {
+	{ PCI_VDEVICE(HUAWEI, PCI_DEVICE_ID_HI1822_PF), 0},
+	{ 0, 0}
+};
+MODULE_DEVICE_TABLE(pci, hinic_pci_table);
+
+static struct pci_driver hinic_driver = {
+	.name           = HINIC_DRV_NAME,
+	.id_table       = hinic_pci_table,
+	.probe          = hinic_probe,
+	.remove         = hinic_remove,
+};
+
+module_pci_driver(hinic_driver);