Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 934 insertions, 0 deletions

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_tx.c b/drivers/net/ethernet/huawei/hinic/hinic_tx.c
new file mode 100644
index 000000000..ad47ac51a
--- /dev/null
+++ b/drivers/net/ethernet/huawei/hinic/hinic_tx.c
@@ -0,0 +1,934 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Huawei HiNIC PCI Express Linux driver
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ */
+
+#include <linux/if_vlan.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/u64_stats_sync.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/skbuff.h>
+#include <linux/smp.h>
+#include <asm/byteorder.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/sctp.h>
+#include <linux/ipv6.h>
+#include <net/ipv6.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+
+#include "hinic_common.h"
+#include "hinic_hw_if.h"
+#include "hinic_hw_wqe.h"
+#include "hinic_hw_wq.h"
+#include "hinic_hw_qp.h"
+#include "hinic_hw_dev.h"
+#include "hinic_dev.h"
+#include "hinic_tx.h"
+
+#define TX_IRQ_NO_PENDING               0
+#define TX_IRQ_NO_COALESC               0
+#define TX_IRQ_NO_LLI_TIMER             0
+#define TX_IRQ_NO_CREDIT                0
+#define TX_IRQ_NO_RESEND_TIMER          0
+
+#define CI_UPDATE_NO_PENDING            0
+#define CI_UPDATE_NO_COALESC            0
+
+#define HW_CONS_IDX(sq)                 be16_to_cpu(*(u16 *)((sq)->hw_ci_addr))
+
+#define MIN_SKB_LEN			32
+
+#define	MAX_PAYLOAD_OFFSET	        221
+#define TRANSPORT_OFFSET(l4_hdr, skb)	((u32)((l4_hdr) - (skb)->data))
+
+union hinic_l3 {
+	struct iphdr *v4;
+	struct ipv6hdr *v6;
+	unsigned char *hdr;
+};
+
+union hinic_l4 {
+	struct tcphdr *tcp;
+	struct udphdr *udp;
+	unsigned char *hdr;
+};
+
+enum hinic_offload_type {
+	TX_OFFLOAD_TSO     = BIT(0),
+	TX_OFFLOAD_CSUM    = BIT(1),
+	TX_OFFLOAD_VLAN    = BIT(2),
+	TX_OFFLOAD_INVALID = BIT(3),
+};
+
+/**
+ * hinic_txq_clean_stats - Clean the statistics of specific queue
+ * @txq: Logical Tx Queue
+ **/
+static void hinic_txq_clean_stats(struct hinic_txq *txq)
+{
+	struct hinic_txq_stats *txq_stats = &txq->txq_stats;
+
+	u64_stats_update_begin(&txq_stats->syncp);
+	txq_stats->pkts    = 0;
+	txq_stats->bytes   = 0;
+	txq_stats->tx_busy = 0;
+	txq_stats->tx_wake = 0;
+	txq_stats->tx_dropped = 0;
+	txq_stats->big_frags_pkts = 0;
+	u64_stats_update_end(&txq_stats->syncp);
+}
+
+/**
+ * hinic_txq_get_stats - get statistics of Tx Queue
+ * @txq: Logical Tx Queue
+ * @stats: return updated stats here
+ **/
+void hinic_txq_get_stats(struct hinic_txq *txq, struct hinic_txq_stats *stats)
+{
+	struct hinic_txq_stats *txq_stats = &txq->txq_stats;
+	unsigned int start;
+
+	do {
+		start = u64_stats_fetch_begin(&txq_stats->syncp);
+		stats->pkts    = txq_stats->pkts;
+		stats->bytes   = txq_stats->bytes;
+		stats->tx_busy = txq_stats->tx_busy;
+		stats->tx_wake = txq_stats->tx_wake;
+		stats->tx_dropped = txq_stats->tx_dropped;
+		stats->big_frags_pkts = txq_stats->big_frags_pkts;
+	} while (u64_stats_fetch_retry(&txq_stats->syncp, start));
+}
+
+/**
+ * txq_stats_init - Initialize the statistics of specific queue
+ * @txq: Logical Tx Queue
+ **/
+static void txq_stats_init(struct hinic_txq *txq)
+{
+	struct hinic_txq_stats *txq_stats = &txq->txq_stats;
+
+	u64_stats_init(&txq_stats->syncp);
+	hinic_txq_clean_stats(txq);
+}
+
+/**
+ * tx_map_skb - dma mapping for skb and return sges
+ * @nic_dev: nic device
+ * @skb: the skb
+ * @sges: returned sges
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+static int tx_map_skb(struct hinic_dev *nic_dev, struct sk_buff *skb,
+		      struct hinic_sge *sges)
+{
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+	struct hinic_hwif *hwif = hwdev->hwif;
+	struct pci_dev *pdev = hwif->pdev;
+	skb_frag_t *frag;
+	dma_addr_t dma_addr;
+	int i, j;
+
+	dma_addr = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb),
+				  DMA_TO_DEVICE);
+	if (dma_mapping_error(&pdev->dev, dma_addr)) {
+		dev_err(&pdev->dev, "Failed to map Tx skb data\n");
+		return -EFAULT;
+	}
+
+	hinic_set_sge(&sges[0], dma_addr, skb_headlen(skb));
+
+	for (i = 0 ; i < skb_shinfo(skb)->nr_frags; i++) {
+		frag = &skb_shinfo(skb)->frags[i];
+
+		dma_addr = skb_frag_dma_map(&pdev->dev, frag, 0,
+					    skb_frag_size(frag),
+					    DMA_TO_DEVICE);
+		if (dma_mapping_error(&pdev->dev, dma_addr)) {
+			dev_err(&pdev->dev, "Failed to map Tx skb frag\n");
+			goto err_tx_map;
+		}
+
+		hinic_set_sge(&sges[i + 1], dma_addr, skb_frag_size(frag));
+	}
+
+	return 0;
+
+err_tx_map:
+	for (j = 0; j < i; j++)
+		dma_unmap_page(&pdev->dev, hinic_sge_to_dma(&sges[j + 1]),
+			       sges[j + 1].len, DMA_TO_DEVICE);
+
+	dma_unmap_single(&pdev->dev, hinic_sge_to_dma(&sges[0]), sges[0].len,
+			 DMA_TO_DEVICE);
+	return -EFAULT;
+}
+
+/**
+ * tx_unmap_skb - unmap the dma address of the skb
+ * @nic_dev: nic device
+ * @skb: the skb
+ * @sges: the sges that are connected to the skb
+ **/
+static void tx_unmap_skb(struct hinic_dev *nic_dev, struct sk_buff *skb,
+			 struct hinic_sge *sges)
+{
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+	struct hinic_hwif *hwif = hwdev->hwif;
+	struct pci_dev *pdev = hwif->pdev;
+	int i;
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags ; i++)
+		dma_unmap_page(&pdev->dev, hinic_sge_to_dma(&sges[i + 1]),
+			       sges[i + 1].len, DMA_TO_DEVICE);
+
+	dma_unmap_single(&pdev->dev, hinic_sge_to_dma(&sges[0]), sges[0].len,
+			 DMA_TO_DEVICE);
+}
+
+static void get_inner_l3_l4_type(struct sk_buff *skb, union hinic_l3 *ip,
+				 union hinic_l4 *l4,
+				 enum hinic_offload_type offload_type,
+				 enum hinic_l3_offload_type *l3_type,
+				 u8 *l4_proto)
+{
+	u8 *exthdr;
+
+	if (ip->v4->version == 4) {
+		*l3_type = (offload_type == TX_OFFLOAD_CSUM) ?
+			   IPV4_PKT_NO_CHKSUM_OFFLOAD :
+			   IPV4_PKT_WITH_CHKSUM_OFFLOAD;
+		*l4_proto = ip->v4->protocol;
+	} else if (ip->v4->version == 6) {
+		*l3_type = IPV6_PKT;
+		exthdr = ip->hdr + sizeof(*ip->v6);
+		*l4_proto = ip->v6->nexthdr;
+		if (exthdr != l4->hdr) {
+			int start = exthdr - skb->data;
+			__be16 frag_off;
+
+			ipv6_skip_exthdr(skb, start, l4_proto, &frag_off);
+		}
+	} else {
+		*l3_type = L3TYPE_UNKNOWN;
+		*l4_proto = 0;
+	}
+}
+
+static void get_inner_l4_info(struct sk_buff *skb, union hinic_l4 *l4,
+			      enum hinic_offload_type offload_type, u8 l4_proto,
+			      enum hinic_l4_offload_type *l4_offload,
+			      u32 *l4_len, u32 *offset)
+{
+	*l4_offload = OFFLOAD_DISABLE;
+	*offset = 0;
+	*l4_len = 0;
+
+	switch (l4_proto) {
+	case IPPROTO_TCP:
+		*l4_offload = TCP_OFFLOAD_ENABLE;
+		/* doff in unit of 4B */
+		*l4_len = l4->tcp->doff * 4;
+		*offset = *l4_len + TRANSPORT_OFFSET(l4->hdr, skb);
+		break;
+
+	case IPPROTO_UDP:
+		*l4_offload = UDP_OFFLOAD_ENABLE;
+		*l4_len = sizeof(struct udphdr);
+		*offset = TRANSPORT_OFFSET(l4->hdr, skb);
+		break;
+
+	case IPPROTO_SCTP:
+		/* only csum offload support sctp */
+		if (offload_type != TX_OFFLOAD_CSUM)
+			break;
+
+		*l4_offload = SCTP_OFFLOAD_ENABLE;
+		*l4_len = sizeof(struct sctphdr);
+		*offset = TRANSPORT_OFFSET(l4->hdr, skb);
+		break;
+
+	default:
+		break;
+	}
+}
+
+static __sum16 csum_magic(union hinic_l3 *ip, unsigned short proto)
+{
+	return (ip->v4->version == 4) ?
+		csum_tcpudp_magic(ip->v4->saddr, ip->v4->daddr, 0, proto, 0) :
+		csum_ipv6_magic(&ip->v6->saddr, &ip->v6->daddr, 0, proto, 0);
+}
+
+static int offload_tso(struct hinic_sq_task *task, u32 *queue_info,
+		       struct sk_buff *skb)
+{
+	u32 offset, l4_len, ip_identify, network_hdr_len;
+	enum hinic_l3_offload_type l3_offload;
+	enum hinic_l4_offload_type l4_offload;
+	union hinic_l3 ip;
+	union hinic_l4 l4;
+	u8 l4_proto;
+
+	if (!skb_is_gso(skb))
+		return 0;
+
+	if (skb_cow_head(skb, 0) < 0)
+		return -EPROTONOSUPPORT;
+
+	if (skb->encapsulation) {
+		u32 gso_type = skb_shinfo(skb)->gso_type;
+		u32 tunnel_type = 0;
+		u32 l4_tunnel_len;
+
+		ip.hdr = skb_network_header(skb);
+		l4.hdr = skb_transport_header(skb);
+		network_hdr_len = skb_inner_network_header_len(skb);
+
+		if (ip.v4->version == 4) {
+			ip.v4->tot_len = 0;
+			l3_offload = IPV4_PKT_WITH_CHKSUM_OFFLOAD;
+		} else if (ip.v4->version == 6) {
+			l3_offload = IPV6_PKT;
+		} else {
+			l3_offload = 0;
+		}
+
+		hinic_task_set_outter_l3(task, l3_offload,
+					 skb_network_header_len(skb));
+
+		if (gso_type & SKB_GSO_UDP_TUNNEL_CSUM) {
+			l4.udp->check = ~csum_magic(&ip, IPPROTO_UDP);
+			tunnel_type = TUNNEL_UDP_CSUM;
+		} else if (gso_type & SKB_GSO_UDP_TUNNEL) {
+			tunnel_type = TUNNEL_UDP_NO_CSUM;
+		}
+
+		l4_tunnel_len = skb_inner_network_offset(skb) -
+				skb_transport_offset(skb);
+		hinic_task_set_tunnel_l4(task, tunnel_type, l4_tunnel_len);
+
+		ip.hdr = skb_inner_network_header(skb);
+		l4.hdr = skb_inner_transport_header(skb);
+	} else {
+		ip.hdr = skb_network_header(skb);
+		l4.hdr = skb_transport_header(skb);
+		network_hdr_len = skb_network_header_len(skb);
+	}
+
+	/* initialize inner IP header fields */
+	if (ip.v4->version == 4)
+		ip.v4->tot_len = 0;
+	else
+		ip.v6->payload_len = 0;
+
+	get_inner_l3_l4_type(skb, &ip, &l4, TX_OFFLOAD_TSO, &l3_offload,
+			     &l4_proto);
+
+	hinic_task_set_inner_l3(task, l3_offload, network_hdr_len);
+
+	ip_identify = 0;
+	if (l4_proto == IPPROTO_TCP)
+		l4.tcp->check = ~csum_magic(&ip, IPPROTO_TCP);
+
+	get_inner_l4_info(skb, &l4, TX_OFFLOAD_TSO, l4_proto, &l4_offload,
+			  &l4_len, &offset);
+
+	hinic_set_tso_inner_l4(task, queue_info, l4_offload, l4_len, offset,
+			       ip_identify, skb_shinfo(skb)->gso_size);
+
+	return 1;
+}
+
+static int offload_csum(struct hinic_sq_task *task, u32 *queue_info,
+			struct sk_buff *skb)
+{
+	enum hinic_l4_offload_type l4_offload;
+	u32 offset, l4_len, network_hdr_len;
+	enum hinic_l3_offload_type l3_type;
+	u32 tunnel_type = NOT_TUNNEL;
+	union hinic_l3 ip;
+	union hinic_l4 l4;
+	u8 l4_proto;
+
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		return 0;
+
+	if (skb->encapsulation) {
+		u32 l4_tunnel_len;
+
+		tunnel_type = TUNNEL_UDP_NO_CSUM;
+		ip.hdr = skb_network_header(skb);
+
+		if (ip.v4->version == 4) {
+			l3_type = IPV4_PKT_NO_CHKSUM_OFFLOAD;
+			l4_proto = ip.v4->protocol;
+		} else if (ip.v4->version == 6) {
+			unsigned char *exthdr;
+			__be16 frag_off;
+
+			l3_type = IPV6_PKT;
+			tunnel_type = TUNNEL_UDP_CSUM;
+			exthdr = ip.hdr + sizeof(*ip.v6);
+			l4_proto = ip.v6->nexthdr;
+			l4.hdr = skb_transport_header(skb);
+			if (l4.hdr != exthdr)
+				ipv6_skip_exthdr(skb, exthdr - skb->data,
+						 &l4_proto, &frag_off);
+		} else {
+			l3_type = L3TYPE_UNKNOWN;
+			l4_proto = IPPROTO_RAW;
+		}
+
+		hinic_task_set_outter_l3(task, l3_type,
+					 skb_network_header_len(skb));
+
+		switch (l4_proto) {
+		case IPPROTO_UDP:
+			l4_tunnel_len = skb_inner_network_offset(skb) -
+					skb_transport_offset(skb);
+			ip.hdr = skb_inner_network_header(skb);
+			l4.hdr = skb_inner_transport_header(skb);
+			network_hdr_len = skb_inner_network_header_len(skb);
+			break;
+		case IPPROTO_IPIP:
+		case IPPROTO_IPV6:
+			tunnel_type = NOT_TUNNEL;
+			l4_tunnel_len = 0;
+
+			ip.hdr = skb_inner_network_header(skb);
+			l4.hdr = skb_transport_header(skb);
+			network_hdr_len = skb_network_header_len(skb);
+			break;
+		default:
+			/* Unsupported tunnel packet, disable csum offload */
+			skb_checksum_help(skb);
+			return 0;
+		}
+
+		hinic_task_set_tunnel_l4(task, tunnel_type, l4_tunnel_len);
+	} else {
+		ip.hdr = skb_network_header(skb);
+		l4.hdr = skb_transport_header(skb);
+		network_hdr_len = skb_network_header_len(skb);
+	}
+
+	get_inner_l3_l4_type(skb, &ip, &l4, TX_OFFLOAD_CSUM, &l3_type,
+			     &l4_proto);
+
+	hinic_task_set_inner_l3(task, l3_type, network_hdr_len);
+
+	get_inner_l4_info(skb, &l4, TX_OFFLOAD_CSUM, l4_proto, &l4_offload,
+			  &l4_len, &offset);
+
+	hinic_set_cs_inner_l4(task, queue_info, l4_offload, l4_len, offset);
+
+	return 1;
+}
+
+static void offload_vlan(struct hinic_sq_task *task, u32 *queue_info,
+			 u16 vlan_tag, u16 vlan_pri)
+{
+	task->pkt_info0 |= HINIC_SQ_TASK_INFO0_SET(vlan_tag, VLAN_TAG) |
+				HINIC_SQ_TASK_INFO0_SET(1U, VLAN_OFFLOAD);
+
+	*queue_info |= HINIC_SQ_CTRL_SET(vlan_pri, QUEUE_INFO_PRI);
+}
+
+static int hinic_tx_offload(struct sk_buff *skb, struct hinic_sq_task *task,
+			    u32 *queue_info)
+{
+	enum hinic_offload_type offload = 0;
+	u16 vlan_tag;
+	int enabled;
+
+	enabled = offload_tso(task, queue_info, skb);
+	if (enabled > 0) {
+		offload |= TX_OFFLOAD_TSO;
+	} else if (enabled == 0) {
+		enabled = offload_csum(task, queue_info, skb);
+		if (enabled)
+			offload |= TX_OFFLOAD_CSUM;
+	} else {
+		return -EPROTONOSUPPORT;
+	}
+
+	if (unlikely(skb_vlan_tag_present(skb))) {
+		vlan_tag = skb_vlan_tag_get(skb);
+		offload_vlan(task, queue_info, vlan_tag,
+			     vlan_tag >> VLAN_PRIO_SHIFT);
+		offload |= TX_OFFLOAD_VLAN;
+	}
+
+	if (offload)
+		hinic_task_set_l2hdr(task, skb_network_offset(skb));
+
+	/* payload offset should not more than 221 */
+	if (HINIC_SQ_CTRL_GET(*queue_info, QUEUE_INFO_PLDOFF) >
+	    MAX_PAYLOAD_OFFSET) {
+		return -EPROTONOSUPPORT;
+	}
+
+	/* mss should not less than 80 */
+	if (HINIC_SQ_CTRL_GET(*queue_info, QUEUE_INFO_MSS) < HINIC_MSS_MIN) {
+		*queue_info = HINIC_SQ_CTRL_CLEAR(*queue_info, QUEUE_INFO_MSS);
+		*queue_info |= HINIC_SQ_CTRL_SET(HINIC_MSS_MIN, QUEUE_INFO_MSS);
+	}
+
+	return 0;
+}
+
+netdev_tx_t hinic_lb_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	u16 prod_idx, q_id = skb->queue_mapping;
+	struct netdev_queue *netdev_txq;
+	int nr_sges, err = NETDEV_TX_OK;
+	struct hinic_sq_wqe *sq_wqe;
+	unsigned int wqe_size;
+	struct hinic_txq *txq;
+	struct hinic_qp *qp;
+
+	txq = &nic_dev->txqs[q_id];
+	qp = container_of(txq->sq, struct hinic_qp, sq);
+	nr_sges = skb_shinfo(skb)->nr_frags + 1;
+
+	err = tx_map_skb(nic_dev, skb, txq->sges);
+	if (err)
+		goto skb_error;
+
+	wqe_size = HINIC_SQ_WQE_SIZE(nr_sges);
+
+	sq_wqe = hinic_sq_get_wqe(txq->sq, wqe_size, &prod_idx);
+	if (!sq_wqe) {
+		netif_stop_subqueue(netdev, qp->q_id);
+
+		sq_wqe = hinic_sq_get_wqe(txq->sq, wqe_size, &prod_idx);
+		if (sq_wqe) {
+			netif_wake_subqueue(nic_dev->netdev, qp->q_id);
+			goto process_sq_wqe;
+		}
+
+		tx_unmap_skb(nic_dev, skb, txq->sges);
+
+		u64_stats_update_begin(&txq->txq_stats.syncp);
+		txq->txq_stats.tx_busy++;
+		u64_stats_update_end(&txq->txq_stats.syncp);
+		err = NETDEV_TX_BUSY;
+		wqe_size = 0;
+		goto flush_skbs;
+	}
+
+process_sq_wqe:
+	hinic_sq_prepare_wqe(txq->sq, sq_wqe, txq->sges, nr_sges);
+	hinic_sq_write_wqe(txq->sq, prod_idx, sq_wqe, skb, wqe_size);
+
+flush_skbs:
+	netdev_txq = netdev_get_tx_queue(netdev, q_id);
+	if ((!netdev_xmit_more()) || (netif_xmit_stopped(netdev_txq)))
+		hinic_sq_write_db(txq->sq, prod_idx, wqe_size, 0);
+
+	return err;
+
+skb_error:
+	dev_kfree_skb_any(skb);
+	u64_stats_update_begin(&txq->txq_stats.syncp);
+	txq->txq_stats.tx_dropped++;
+	u64_stats_update_end(&txq->txq_stats.syncp);
+
+	return NETDEV_TX_OK;
+}
+
+netdev_tx_t hinic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	u16 prod_idx, q_id = skb->queue_mapping;
+	struct netdev_queue *netdev_txq;
+	int nr_sges, err = NETDEV_TX_OK;
+	struct hinic_sq_wqe *sq_wqe;
+	unsigned int wqe_size;
+	struct hinic_txq *txq;
+	struct hinic_qp *qp;
+
+	txq = &nic_dev->txqs[q_id];
+	qp = container_of(txq->sq, struct hinic_qp, sq);
+
+	if (skb->len < MIN_SKB_LEN) {
+		if (skb_pad(skb, MIN_SKB_LEN - skb->len)) {
+			netdev_err(netdev, "Failed to pad skb\n");
+			goto update_error_stats;
+		}
+
+		skb->len = MIN_SKB_LEN;
+	}
+
+	nr_sges = skb_shinfo(skb)->nr_frags + 1;
+	if (nr_sges > 17) {
+		u64_stats_update_begin(&txq->txq_stats.syncp);
+		txq->txq_stats.big_frags_pkts++;
+		u64_stats_update_end(&txq->txq_stats.syncp);
+	}
+
+	if (nr_sges > txq->max_sges) {
+		netdev_err(netdev, "Too many Tx sges\n");
+		goto skb_error;
+	}
+
+	err = tx_map_skb(nic_dev, skb, txq->sges);
+	if (err)
+		goto skb_error;
+
+	wqe_size = HINIC_SQ_WQE_SIZE(nr_sges);
+
+	sq_wqe = hinic_sq_get_wqe(txq->sq, wqe_size, &prod_idx);
+	if (!sq_wqe) {
+		netif_stop_subqueue(netdev, qp->q_id);
+
+		/* Check for the case free_tx_poll is called in another cpu
+		 * and we stopped the subqueue after free_tx_poll check.
+		 */
+		sq_wqe = hinic_sq_get_wqe(txq->sq, wqe_size, &prod_idx);
+		if (sq_wqe) {
+			netif_wake_subqueue(nic_dev->netdev, qp->q_id);
+			goto process_sq_wqe;
+		}
+
+		tx_unmap_skb(nic_dev, skb, txq->sges);
+
+		u64_stats_update_begin(&txq->txq_stats.syncp);
+		txq->txq_stats.tx_busy++;
+		u64_stats_update_end(&txq->txq_stats.syncp);
+		err = NETDEV_TX_BUSY;
+		wqe_size = 0;
+		goto flush_skbs;
+	}
+
+process_sq_wqe:
+	hinic_sq_prepare_wqe(txq->sq, sq_wqe, txq->sges, nr_sges);
+
+	err = hinic_tx_offload(skb, &sq_wqe->task, &sq_wqe->ctrl.queue_info);
+	if (err)
+		goto offload_error;
+
+	hinic_sq_write_wqe(txq->sq, prod_idx, sq_wqe, skb, wqe_size);
+
+flush_skbs:
+	netdev_txq = netdev_get_tx_queue(netdev, q_id);
+	if ((!netdev_xmit_more()) || (netif_xmit_stopped(netdev_txq)))
+		hinic_sq_write_db(txq->sq, prod_idx, wqe_size, 0);
+
+	return err;
+
+offload_error:
+	hinic_sq_return_wqe(txq->sq, wqe_size);
+	tx_unmap_skb(nic_dev, skb, txq->sges);
+
+skb_error:
+	dev_kfree_skb_any(skb);
+
+update_error_stats:
+	u64_stats_update_begin(&txq->txq_stats.syncp);
+	txq->txq_stats.tx_dropped++;
+	u64_stats_update_end(&txq->txq_stats.syncp);
+
+	return NETDEV_TX_OK;
+}
+
+/**
+ * tx_free_skb - unmap and free skb
+ * @nic_dev: nic device
+ * @skb: the skb
+ * @sges: the sges that are connected to the skb
+ **/
+static void tx_free_skb(struct hinic_dev *nic_dev, struct sk_buff *skb,
+			struct hinic_sge *sges)
+{
+	tx_unmap_skb(nic_dev, skb, sges);
+
+	dev_kfree_skb_any(skb);
+}
+
+/**
+ * free_all_tx_skbs - free all skbs in tx queue
+ * @txq: tx queue
+ **/
+static void free_all_tx_skbs(struct hinic_txq *txq)
+{
+	struct hinic_dev *nic_dev = netdev_priv(txq->netdev);
+	struct hinic_sq *sq = txq->sq;
+	struct hinic_sq_wqe *sq_wqe;
+	unsigned int wqe_size;
+	struct sk_buff *skb;
+	int nr_sges;
+	u16 ci;
+
+	while ((sq_wqe = hinic_sq_read_wqebb(sq, &skb, &wqe_size, &ci))) {
+		sq_wqe = hinic_sq_read_wqe(sq, &skb, wqe_size, &ci);
+		if (!sq_wqe)
+			break;
+
+		nr_sges = skb_shinfo(skb)->nr_frags + 1;
+
+		hinic_sq_get_sges(sq_wqe, txq->free_sges, nr_sges);
+
+		hinic_sq_put_wqe(sq, wqe_size);
+
+		tx_free_skb(nic_dev, skb, txq->free_sges);
+	}
+}
+
+/**
+ * free_tx_poll - free finished tx skbs in tx queue that connected to napi
+ * @napi: napi
+ * @budget: number of tx
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+static int free_tx_poll(struct napi_struct *napi, int budget)
+{
+	struct hinic_txq *txq = container_of(napi, struct hinic_txq, napi);
+	struct hinic_qp *qp = container_of(txq->sq, struct hinic_qp, sq);
+	struct hinic_dev *nic_dev = netdev_priv(txq->netdev);
+	struct netdev_queue *netdev_txq;
+	struct hinic_sq *sq = txq->sq;
+	struct hinic_wq *wq = sq->wq;
+	struct hinic_sq_wqe *sq_wqe;
+	unsigned int wqe_size;
+	int nr_sges, pkts = 0;
+	struct sk_buff *skb;
+	u64 tx_bytes = 0;
+	u16 hw_ci, sw_ci;
+
+	do {
+		hw_ci = HW_CONS_IDX(sq) & wq->mask;
+
+		dma_rmb();
+
+		/* Reading a WQEBB to get real WQE size and consumer index. */
+		sq_wqe = hinic_sq_read_wqebb(sq, &skb, &wqe_size, &sw_ci);
+		if (!sq_wqe ||
+		    (((hw_ci - sw_ci) & wq->mask) * wq->wqebb_size < wqe_size))
+			break;
+
+		/* If this WQE have multiple WQEBBs, we will read again to get
+		 * full size WQE.
+		 */
+		if (wqe_size > wq->wqebb_size) {
+			sq_wqe = hinic_sq_read_wqe(sq, &skb, wqe_size, &sw_ci);
+			if (unlikely(!sq_wqe))
+				break;
+		}
+
+		tx_bytes += skb->len;
+		pkts++;
+
+		nr_sges = skb_shinfo(skb)->nr_frags + 1;
+
+		hinic_sq_get_sges(sq_wqe, txq->free_sges, nr_sges);
+
+		hinic_sq_put_wqe(sq, wqe_size);
+
+		tx_free_skb(nic_dev, skb, txq->free_sges);
+	} while (pkts < budget);
+
+	if (__netif_subqueue_stopped(nic_dev->netdev, qp->q_id) &&
+	    hinic_get_sq_free_wqebbs(sq) >= HINIC_MIN_TX_NUM_WQEBBS(sq)) {
+		netdev_txq = netdev_get_tx_queue(txq->netdev, qp->q_id);
+
+		__netif_tx_lock(netdev_txq, smp_processor_id());
+		if (!netif_testing(nic_dev->netdev))
+			netif_wake_subqueue(nic_dev->netdev, qp->q_id);
+
+		__netif_tx_unlock(netdev_txq);
+
+		u64_stats_update_begin(&txq->txq_stats.syncp);
+		txq->txq_stats.tx_wake++;
+		u64_stats_update_end(&txq->txq_stats.syncp);
+	}
+
+	u64_stats_update_begin(&txq->txq_stats.syncp);
+	txq->txq_stats.bytes += tx_bytes;
+	txq->txq_stats.pkts += pkts;
+	u64_stats_update_end(&txq->txq_stats.syncp);
+
+	if (pkts < budget) {
+		napi_complete(napi);
+		if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
+			hinic_hwdev_set_msix_state(nic_dev->hwdev,
+						   sq->msix_entry,
+						   HINIC_MSIX_ENABLE);
+
+		return pkts;
+	}
+
+	return budget;
+}
+
+static irqreturn_t tx_irq(int irq, void *data)
+{
+	struct hinic_txq *txq = data;
+	struct hinic_dev *nic_dev;
+
+	nic_dev = netdev_priv(txq->netdev);
+
+	if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
+		/* Disable the interrupt until napi will be completed */
+		hinic_hwdev_set_msix_state(nic_dev->hwdev,
+					   txq->sq->msix_entry,
+					   HINIC_MSIX_DISABLE);
+
+	hinic_hwdev_msix_cnt_set(nic_dev->hwdev, txq->sq->msix_entry);
+
+	napi_schedule(&txq->napi);
+	return IRQ_HANDLED;
+}
+
+static int tx_request_irq(struct hinic_txq *txq)
+{
+	struct hinic_dev *nic_dev = netdev_priv(txq->netdev);
+	struct hinic_msix_config interrupt_info = {0};
+	struct hinic_intr_coal_info *intr_coal = NULL;
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+	struct hinic_hwif *hwif = hwdev->hwif;
+	struct pci_dev *pdev = hwif->pdev;
+	struct hinic_sq *sq = txq->sq;
+	struct hinic_qp *qp;
+	int err;
+
+	qp = container_of(sq, struct hinic_qp, sq);
+
+	netif_napi_add_weight(txq->netdev, &txq->napi, free_tx_poll,
+			      nic_dev->tx_weight);
+
+	hinic_hwdev_msix_set(nic_dev->hwdev, sq->msix_entry,
+			     TX_IRQ_NO_PENDING, TX_IRQ_NO_COALESC,
+			     TX_IRQ_NO_LLI_TIMER, TX_IRQ_NO_CREDIT,
+			     TX_IRQ_NO_RESEND_TIMER);
+
+	intr_coal = &nic_dev->tx_intr_coalesce[qp->q_id];
+	interrupt_info.msix_index = sq->msix_entry;
+	interrupt_info.coalesce_timer_cnt = intr_coal->coalesce_timer_cfg;
+	interrupt_info.pending_cnt = intr_coal->pending_limt;
+	interrupt_info.resend_timer_cnt = intr_coal->resend_timer_cfg;
+
+	err = hinic_set_interrupt_cfg(hwdev, &interrupt_info);
+	if (err) {
+		netif_err(nic_dev, drv, txq->netdev,
+			  "Failed to set TX interrupt coalescing attribute\n");
+		netif_napi_del(&txq->napi);
+		return err;
+	}
+
+	err = request_irq(sq->irq, tx_irq, 0, txq->irq_name, txq);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to request Tx irq\n");
+		netif_napi_del(&txq->napi);
+		return err;
+	}
+
+	return 0;
+}
+
+static void tx_free_irq(struct hinic_txq *txq)
+{
+	struct hinic_sq *sq = txq->sq;
+
+	free_irq(sq->irq, txq);
+	netif_napi_del(&txq->napi);
+}
+
+/**
+ * hinic_init_txq - Initialize the Tx Queue
+ * @txq: Logical Tx Queue
+ * @sq: Hardware Tx Queue to connect the Logical queue with
+ * @netdev: network device to connect the Logical queue with
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+int hinic_init_txq(struct hinic_txq *txq, struct hinic_sq *sq,
+		   struct net_device *netdev)
+{
+	struct hinic_qp *qp = container_of(sq, struct hinic_qp, sq);
+	struct hinic_dev *nic_dev = netdev_priv(netdev);
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+	int err, irqname_len;
+
+	txq->netdev = netdev;
+	txq->sq = sq;
+
+	txq_stats_init(txq);
+
+	txq->max_sges = HINIC_MAX_SQ_BUFDESCS;
+
+	txq->sges = devm_kcalloc(&netdev->dev, txq->max_sges,
+				 sizeof(*txq->sges), GFP_KERNEL);
+	if (!txq->sges)
+		return -ENOMEM;
+
+	txq->free_sges = devm_kcalloc(&netdev->dev, txq->max_sges,
+				      sizeof(*txq->free_sges), GFP_KERNEL);
+	if (!txq->free_sges) {
+		err = -ENOMEM;
+		goto err_alloc_free_sges;
+	}
+
+	irqname_len = snprintf(NULL, 0, "%s_txq%d", netdev->name, qp->q_id) + 1;
+	txq->irq_name = devm_kzalloc(&netdev->dev, irqname_len, GFP_KERNEL);
+	if (!txq->irq_name) {
+		err = -ENOMEM;
+		goto err_alloc_irqname;
+	}
+
+	sprintf(txq->irq_name, "%s_txq%d", netdev->name, qp->q_id);
+
+	err = hinic_hwdev_hw_ci_addr_set(hwdev, sq, CI_UPDATE_NO_PENDING,
+					 CI_UPDATE_NO_COALESC);
+	if (err)
+		goto err_hw_ci;
+
+	err = tx_request_irq(txq);
+	if (err) {
+		netdev_err(netdev, "Failed to request Tx irq\n");
+		goto err_req_tx_irq;
+	}
+
+	return 0;
+
+err_req_tx_irq:
+err_hw_ci:
+	devm_kfree(&netdev->dev, txq->irq_name);
+
+err_alloc_irqname:
+	devm_kfree(&netdev->dev, txq->free_sges);
+
+err_alloc_free_sges:
+	devm_kfree(&netdev->dev, txq->sges);
+	return err;
+}
+
+/**
+ * hinic_clean_txq - Clean the Tx Queue
+ * @txq: Logical Tx Queue
+ **/
+void hinic_clean_txq(struct hinic_txq *txq)
+{
+	struct net_device *netdev = txq->netdev;
+
+	tx_free_irq(txq);
+
+	free_all_tx_skbs(txq);
+
+	devm_kfree(&netdev->dev, txq->irq_name);
+	devm_kfree(&netdev->dev, txq->free_sges);
+	devm_kfree(&netdev->dev, txq->sges);
+}