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, 631 insertions, 0 deletions

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_rx.c b/drivers/net/ethernet/huawei/hinic/hinic_rx.c
new file mode 100644
index 000000000..ceec8be2a
--- /dev/null
+++ b/drivers/net/ethernet/huawei/hinic/hinic_rx.c
@@ -0,0 +1,631 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Huawei HiNIC PCI Express Linux driver
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/u64_stats_sync.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/skbuff.h>
+#include <linux/dma-mapping.h>
+#include <linux/prefetch.h>
+#include <linux/cpumask.h>
+#include <linux/if_vlan.h>
+#include <asm/barrier.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_rx.h"
+#include "hinic_dev.h"
+
+#define RX_IRQ_NO_PENDING               0
+#define RX_IRQ_NO_COALESC               0
+#define RX_IRQ_NO_LLI_TIMER             0
+#define RX_IRQ_NO_CREDIT                0
+#define RX_IRQ_NO_RESEND_TIMER          0
+#define HINIC_RX_BUFFER_WRITE           16
+
+#define HINIC_RX_IPV6_PKT		7
+#define LRO_PKT_HDR_LEN_IPV4		66
+#define LRO_PKT_HDR_LEN_IPV6		86
+#define LRO_REPLENISH_THLD		256
+
+#define LRO_PKT_HDR_LEN(cqe)		\
+	(HINIC_GET_RX_PKT_TYPE(be32_to_cpu((cqe)->offload_type)) == \
+	 HINIC_RX_IPV6_PKT ? LRO_PKT_HDR_LEN_IPV6 : LRO_PKT_HDR_LEN_IPV4)
+
+/**
+ * hinic_rxq_clean_stats - Clean the statistics of specific queue
+ * @rxq: Logical Rx Queue
+ **/
+static void hinic_rxq_clean_stats(struct hinic_rxq *rxq)
+{
+	struct hinic_rxq_stats *rxq_stats = &rxq->rxq_stats;
+
+	u64_stats_update_begin(&rxq_stats->syncp);
+	rxq_stats->pkts  = 0;
+	rxq_stats->bytes = 0;
+	rxq_stats->errors = 0;
+	rxq_stats->csum_errors = 0;
+	rxq_stats->other_errors = 0;
+	u64_stats_update_end(&rxq_stats->syncp);
+}
+
+/**
+ * hinic_rxq_get_stats - get statistics of Rx Queue
+ * @rxq: Logical Rx Queue
+ * @stats: return updated stats here
+ **/
+void hinic_rxq_get_stats(struct hinic_rxq *rxq, struct hinic_rxq_stats *stats)
+{
+	struct hinic_rxq_stats *rxq_stats = &rxq->rxq_stats;
+	unsigned int start;
+
+	do {
+		start = u64_stats_fetch_begin(&rxq_stats->syncp);
+		stats->pkts = rxq_stats->pkts;
+		stats->bytes = rxq_stats->bytes;
+		stats->errors = rxq_stats->csum_errors +
+				rxq_stats->other_errors;
+		stats->csum_errors = rxq_stats->csum_errors;
+		stats->other_errors = rxq_stats->other_errors;
+	} while (u64_stats_fetch_retry(&rxq_stats->syncp, start));
+}
+
+/**
+ * rxq_stats_init - Initialize the statistics of specific queue
+ * @rxq: Logical Rx Queue
+ **/
+static void rxq_stats_init(struct hinic_rxq *rxq)
+{
+	struct hinic_rxq_stats *rxq_stats = &rxq->rxq_stats;
+
+	u64_stats_init(&rxq_stats->syncp);
+	hinic_rxq_clean_stats(rxq);
+}
+
+static void rx_csum(struct hinic_rxq *rxq, u32 status,
+		    struct sk_buff *skb)
+{
+	struct net_device *netdev = rxq->netdev;
+	u32 csum_err;
+
+	csum_err = HINIC_RQ_CQE_STATUS_GET(status, CSUM_ERR);
+
+	if (!(netdev->features & NETIF_F_RXCSUM))
+		return;
+
+	if (!csum_err) {
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
+	} else {
+		if (!(csum_err & (HINIC_RX_CSUM_HW_CHECK_NONE |
+			HINIC_RX_CSUM_IPSU_OTHER_ERR)))
+			rxq->rxq_stats.csum_errors++;
+		skb->ip_summed = CHECKSUM_NONE;
+	}
+}
+
+/**
+ * rx_alloc_skb - allocate skb and map it to dma address
+ * @rxq: rx queue
+ * @dma_addr: returned dma address for the skb
+ *
+ * Return skb
+ **/
+static struct sk_buff *rx_alloc_skb(struct hinic_rxq *rxq,
+				    dma_addr_t *dma_addr)
+{
+	struct hinic_dev *nic_dev = netdev_priv(rxq->netdev);
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+	struct hinic_hwif *hwif = hwdev->hwif;
+	struct pci_dev *pdev = hwif->pdev;
+	struct sk_buff *skb;
+	dma_addr_t addr;
+	int err;
+
+	skb = netdev_alloc_skb_ip_align(rxq->netdev, rxq->rq->buf_sz);
+	if (!skb)
+		return NULL;
+
+	addr = dma_map_single(&pdev->dev, skb->data, rxq->rq->buf_sz,
+			      DMA_FROM_DEVICE);
+	err = dma_mapping_error(&pdev->dev, addr);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to map Rx DMA, err = %d\n", err);
+		goto err_rx_map;
+	}
+
+	*dma_addr = addr;
+	return skb;
+
+err_rx_map:
+	dev_kfree_skb_any(skb);
+	return NULL;
+}
+
+/**
+ * rx_unmap_skb - unmap the dma address of the skb
+ * @rxq: rx queue
+ * @dma_addr: dma address of the skb
+ **/
+static void rx_unmap_skb(struct hinic_rxq *rxq, dma_addr_t dma_addr)
+{
+	struct hinic_dev *nic_dev = netdev_priv(rxq->netdev);
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+	struct hinic_hwif *hwif = hwdev->hwif;
+	struct pci_dev *pdev = hwif->pdev;
+
+	dma_unmap_single(&pdev->dev, dma_addr, rxq->rq->buf_sz,
+			 DMA_FROM_DEVICE);
+}
+
+/**
+ * rx_free_skb - unmap and free skb
+ * @rxq: rx queue
+ * @skb: skb to free
+ * @dma_addr: dma address of the skb
+ **/
+static void rx_free_skb(struct hinic_rxq *rxq, struct sk_buff *skb,
+			dma_addr_t dma_addr)
+{
+	rx_unmap_skb(rxq, dma_addr);
+	dev_kfree_skb_any(skb);
+}
+
+/**
+ * rx_alloc_pkts - allocate pkts in rx queue
+ * @rxq: rx queue
+ *
+ * Return number of skbs allocated
+ **/
+static int rx_alloc_pkts(struct hinic_rxq *rxq)
+{
+	struct hinic_dev *nic_dev = netdev_priv(rxq->netdev);
+	struct hinic_rq_wqe *rq_wqe;
+	unsigned int free_wqebbs;
+	struct hinic_sge sge;
+	dma_addr_t dma_addr;
+	struct sk_buff *skb;
+	u16 prod_idx;
+	int i;
+
+	free_wqebbs = hinic_get_rq_free_wqebbs(rxq->rq);
+
+	/* Limit the allocation chunks */
+	if (free_wqebbs > nic_dev->rx_weight)
+		free_wqebbs = nic_dev->rx_weight;
+
+	for (i = 0; i < free_wqebbs; i++) {
+		skb = rx_alloc_skb(rxq, &dma_addr);
+		if (!skb)
+			goto skb_out;
+
+		hinic_set_sge(&sge, dma_addr, skb->len);
+
+		rq_wqe = hinic_rq_get_wqe(rxq->rq, HINIC_RQ_WQE_SIZE,
+					  &prod_idx);
+		if (!rq_wqe) {
+			rx_free_skb(rxq, skb, dma_addr);
+			goto skb_out;
+		}
+
+		hinic_rq_prepare_wqe(rxq->rq, prod_idx, rq_wqe, &sge);
+
+		hinic_rq_write_wqe(rxq->rq, prod_idx, rq_wqe, skb);
+	}
+
+skb_out:
+	if (i) {
+		wmb();  /* write all the wqes before update PI */
+
+		hinic_rq_update(rxq->rq, prod_idx);
+	}
+
+	return i;
+}
+
+/**
+ * free_all_rx_skbs - free all skbs in rx queue
+ * @rxq: rx queue
+ **/
+static void free_all_rx_skbs(struct hinic_rxq *rxq)
+{
+	struct hinic_rq *rq = rxq->rq;
+	struct hinic_hw_wqe *hw_wqe;
+	struct hinic_sge sge;
+	u16 ci;
+
+	while ((hw_wqe = hinic_read_wqe(rq->wq, HINIC_RQ_WQE_SIZE, &ci))) {
+		if (IS_ERR(hw_wqe))
+			break;
+
+		hinic_rq_get_sge(rq, &hw_wqe->rq_wqe, ci, &sge);
+
+		hinic_put_wqe(rq->wq, HINIC_RQ_WQE_SIZE);
+
+		rx_free_skb(rxq, rq->saved_skb[ci], hinic_sge_to_dma(&sge));
+	}
+}
+
+/**
+ * rx_recv_jumbo_pkt - Rx handler for jumbo pkt
+ * @rxq: rx queue
+ * @head_skb: the first skb in the list
+ * @left_pkt_len: left size of the pkt exclude head skb
+ * @ci: consumer index
+ *
+ * Return number of wqes that used for the left of the pkt
+ **/
+static int rx_recv_jumbo_pkt(struct hinic_rxq *rxq, struct sk_buff *head_skb,
+			     unsigned int left_pkt_len, u16 ci)
+{
+	struct sk_buff *skb, *curr_skb = head_skb;
+	struct hinic_rq_wqe *rq_wqe;
+	unsigned int curr_len;
+	struct hinic_sge sge;
+	int num_wqes = 0;
+
+	while (left_pkt_len > 0) {
+		rq_wqe = hinic_rq_read_next_wqe(rxq->rq, HINIC_RQ_WQE_SIZE,
+						&skb, &ci);
+
+		num_wqes++;
+
+		hinic_rq_get_sge(rxq->rq, rq_wqe, ci, &sge);
+
+		rx_unmap_skb(rxq, hinic_sge_to_dma(&sge));
+
+		prefetch(skb->data);
+
+		curr_len = (left_pkt_len > HINIC_RX_BUF_SZ) ? HINIC_RX_BUF_SZ :
+			    left_pkt_len;
+
+		left_pkt_len -= curr_len;
+
+		__skb_put(skb, curr_len);
+
+		if (curr_skb == head_skb)
+			skb_shinfo(head_skb)->frag_list = skb;
+		else
+			curr_skb->next = skb;
+
+		head_skb->len += skb->len;
+		head_skb->data_len += skb->len;
+		head_skb->truesize += skb->truesize;
+
+		curr_skb = skb;
+	}
+
+	return num_wqes;
+}
+
+static void hinic_copy_lp_data(struct hinic_dev *nic_dev,
+			       struct sk_buff *skb)
+{
+	struct net_device *netdev = nic_dev->netdev;
+	u8 *lb_buf = nic_dev->lb_test_rx_buf;
+	int lb_len = nic_dev->lb_pkt_len;
+	int pkt_offset, frag_len, i;
+	void *frag_data = NULL;
+
+	if (nic_dev->lb_test_rx_idx == LP_PKT_CNT) {
+		nic_dev->lb_test_rx_idx = 0;
+		netif_warn(nic_dev, drv, netdev, "Loopback test warning, receive too more test pkts\n");
+	}
+
+	if (skb->len != nic_dev->lb_pkt_len) {
+		netif_warn(nic_dev, drv, netdev, "Wrong packet length\n");
+		nic_dev->lb_test_rx_idx++;
+		return;
+	}
+
+	pkt_offset = nic_dev->lb_test_rx_idx * lb_len;
+	frag_len = (int)skb_headlen(skb);
+	memcpy(lb_buf + pkt_offset, skb->data, frag_len);
+	pkt_offset += frag_len;
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		frag_data = skb_frag_address(&skb_shinfo(skb)->frags[i]);
+		frag_len = (int)skb_frag_size(&skb_shinfo(skb)->frags[i]);
+		memcpy((lb_buf + pkt_offset), frag_data, frag_len);
+		pkt_offset += frag_len;
+	}
+	nic_dev->lb_test_rx_idx++;
+}
+
+/**
+ * rxq_recv - Rx handler
+ * @rxq: rx queue
+ * @budget: maximum pkts to process
+ *
+ * Return number of pkts received
+ **/
+static int rxq_recv(struct hinic_rxq *rxq, int budget)
+{
+	struct hinic_qp *qp = container_of(rxq->rq, struct hinic_qp, rq);
+	struct net_device *netdev = rxq->netdev;
+	u64 pkt_len = 0, rx_bytes = 0;
+	struct hinic_rq *rq = rxq->rq;
+	struct hinic_rq_wqe *rq_wqe;
+	struct hinic_dev *nic_dev;
+	unsigned int free_wqebbs;
+	struct hinic_rq_cqe *cqe;
+	int num_wqes, pkts = 0;
+	struct hinic_sge sge;
+	unsigned int status;
+	struct sk_buff *skb;
+	u32 offload_type;
+	u16 ci, num_lro;
+	u16 num_wqe = 0;
+	u32 vlan_len;
+	u16 vid;
+
+	nic_dev = netdev_priv(netdev);
+
+	while (pkts < budget) {
+		num_wqes = 0;
+
+		rq_wqe = hinic_rq_read_wqe(rxq->rq, HINIC_RQ_WQE_SIZE, &skb,
+					   &ci);
+		if (!rq_wqe)
+			break;
+
+		/* make sure we read rx_done before packet length */
+		dma_rmb();
+
+		cqe = rq->cqe[ci];
+		status =  be32_to_cpu(cqe->status);
+		hinic_rq_get_sge(rxq->rq, rq_wqe, ci, &sge);
+
+		rx_unmap_skb(rxq, hinic_sge_to_dma(&sge));
+
+		rx_csum(rxq, status, skb);
+
+		prefetch(skb->data);
+
+		pkt_len = sge.len;
+
+		if (pkt_len <= HINIC_RX_BUF_SZ) {
+			__skb_put(skb, pkt_len);
+		} else {
+			__skb_put(skb, HINIC_RX_BUF_SZ);
+			num_wqes = rx_recv_jumbo_pkt(rxq, skb, pkt_len -
+						     HINIC_RX_BUF_SZ, ci);
+		}
+
+		hinic_rq_put_wqe(rq, ci,
+				 (num_wqes + 1) * HINIC_RQ_WQE_SIZE);
+
+		offload_type = be32_to_cpu(cqe->offload_type);
+		vlan_len = be32_to_cpu(cqe->len);
+		if ((netdev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
+		    HINIC_GET_RX_VLAN_OFFLOAD_EN(offload_type)) {
+			vid = HINIC_GET_RX_VLAN_TAG(vlan_len);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
+		}
+
+		if (unlikely(nic_dev->flags & HINIC_LP_TEST))
+			hinic_copy_lp_data(nic_dev, skb);
+
+		skb_record_rx_queue(skb, qp->q_id);
+		skb->protocol = eth_type_trans(skb, rxq->netdev);
+
+		napi_gro_receive(&rxq->napi, skb);
+
+		pkts++;
+		rx_bytes += pkt_len;
+
+		num_lro = HINIC_GET_RX_NUM_LRO(status);
+		if (num_lro) {
+			rx_bytes += ((num_lro - 1) *
+				     LRO_PKT_HDR_LEN(cqe));
+
+			num_wqe +=
+			(u16)(pkt_len >> rxq->rx_buff_shift) +
+			((pkt_len & (rxq->buf_len - 1)) ? 1 : 0);
+		}
+
+		cqe->status = 0;
+
+		if (num_wqe >= LRO_REPLENISH_THLD)
+			break;
+	}
+
+	free_wqebbs = hinic_get_rq_free_wqebbs(rxq->rq);
+	if (free_wqebbs > HINIC_RX_BUFFER_WRITE)
+		rx_alloc_pkts(rxq);
+
+	u64_stats_update_begin(&rxq->rxq_stats.syncp);
+	rxq->rxq_stats.pkts += pkts;
+	rxq->rxq_stats.bytes += rx_bytes;
+	u64_stats_update_end(&rxq->rxq_stats.syncp);
+
+	return pkts;
+}
+
+static int rx_poll(struct napi_struct *napi, int budget)
+{
+	struct hinic_rxq *rxq = container_of(napi, struct hinic_rxq, napi);
+	struct hinic_dev *nic_dev = netdev_priv(rxq->netdev);
+	struct hinic_rq *rq = rxq->rq;
+	int pkts;
+
+	pkts = rxq_recv(rxq, budget);
+	if (pkts >= budget)
+		return budget;
+
+	napi_complete(napi);
+
+	if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
+		hinic_hwdev_set_msix_state(nic_dev->hwdev,
+					   rq->msix_entry,
+					   HINIC_MSIX_ENABLE);
+
+	return pkts;
+}
+
+static void rx_add_napi(struct hinic_rxq *rxq)
+{
+	struct hinic_dev *nic_dev = netdev_priv(rxq->netdev);
+
+	netif_napi_add_weight(rxq->netdev, &rxq->napi, rx_poll,
+			      nic_dev->rx_weight);
+	napi_enable(&rxq->napi);
+}
+
+static void rx_del_napi(struct hinic_rxq *rxq)
+{
+	napi_disable(&rxq->napi);
+	netif_napi_del(&rxq->napi);
+}
+
+static irqreturn_t rx_irq(int irq, void *data)
+{
+	struct hinic_rxq *rxq = (struct hinic_rxq *)data;
+	struct hinic_rq *rq = rxq->rq;
+	struct hinic_dev *nic_dev;
+
+	/* Disable the interrupt until napi will be completed */
+	nic_dev = netdev_priv(rxq->netdev);
+	if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
+		hinic_hwdev_set_msix_state(nic_dev->hwdev,
+					   rq->msix_entry,
+					   HINIC_MSIX_DISABLE);
+
+	nic_dev = netdev_priv(rxq->netdev);
+	hinic_hwdev_msix_cnt_set(nic_dev->hwdev, rq->msix_entry);
+
+	napi_schedule(&rxq->napi);
+	return IRQ_HANDLED;
+}
+
+static int rx_request_irq(struct hinic_rxq *rxq)
+{
+	struct hinic_dev *nic_dev = netdev_priv(rxq->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_rq *rq = rxq->rq;
+	struct hinic_qp *qp;
+	int err;
+
+	qp = container_of(rq, struct hinic_qp, rq);
+
+	rx_add_napi(rxq);
+
+	hinic_hwdev_msix_set(hwdev, rq->msix_entry,
+			     RX_IRQ_NO_PENDING, RX_IRQ_NO_COALESC,
+			     RX_IRQ_NO_LLI_TIMER, RX_IRQ_NO_CREDIT,
+			     RX_IRQ_NO_RESEND_TIMER);
+
+	intr_coal = &nic_dev->rx_intr_coalesce[qp->q_id];
+	interrupt_info.msix_index = rq->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, rxq->netdev,
+			  "Failed to set RX interrupt coalescing attribute\n");
+		goto err_req_irq;
+	}
+
+	err = request_irq(rq->irq, rx_irq, 0, rxq->irq_name, rxq);
+	if (err)
+		goto err_req_irq;
+
+	cpumask_set_cpu(qp->q_id % num_online_cpus(), &rq->affinity_mask);
+	err = irq_set_affinity_and_hint(rq->irq, &rq->affinity_mask);
+	if (err)
+		goto err_irq_affinity;
+
+	return 0;
+
+err_irq_affinity:
+	free_irq(rq->irq, rxq);
+err_req_irq:
+	rx_del_napi(rxq);
+	return err;
+}
+
+static void rx_free_irq(struct hinic_rxq *rxq)
+{
+	struct hinic_rq *rq = rxq->rq;
+
+	irq_update_affinity_hint(rq->irq, NULL);
+	free_irq(rq->irq, rxq);
+	rx_del_napi(rxq);
+}
+
+/**
+ * hinic_init_rxq - Initialize the Rx Queue
+ * @rxq: Logical Rx Queue
+ * @rq: Hardware Rx Queue to connect the Logical queue with
+ * @netdev: network device to connect the Logical queue with
+ *
+ * Return 0 - Success, negative - Failure
+ **/
+int hinic_init_rxq(struct hinic_rxq *rxq, struct hinic_rq *rq,
+		   struct net_device *netdev)
+{
+	struct hinic_qp *qp = container_of(rq, struct hinic_qp, rq);
+	int err, pkts;
+
+	rxq->netdev = netdev;
+	rxq->rq = rq;
+	rxq->buf_len = HINIC_RX_BUF_SZ;
+	rxq->rx_buff_shift = ilog2(HINIC_RX_BUF_SZ);
+
+	rxq_stats_init(rxq);
+
+	rxq->irq_name = devm_kasprintf(&netdev->dev, GFP_KERNEL,
+				       "%s_rxq%d", netdev->name, qp->q_id);
+	if (!rxq->irq_name)
+		return -ENOMEM;
+
+	pkts = rx_alloc_pkts(rxq);
+	if (!pkts) {
+		err = -ENOMEM;
+		goto err_rx_pkts;
+	}
+
+	err = rx_request_irq(rxq);
+	if (err) {
+		netdev_err(netdev, "Failed to request Rx irq\n");
+		goto err_req_rx_irq;
+	}
+
+	return 0;
+
+err_req_rx_irq:
+err_rx_pkts:
+	free_all_rx_skbs(rxq);
+	devm_kfree(&netdev->dev, rxq->irq_name);
+	return err;
+}
+
+/**
+ * hinic_clean_rxq - Clean the Rx Queue
+ * @rxq: Logical Rx Queue
+ **/
+void hinic_clean_rxq(struct hinic_rxq *rxq)
+{
+	struct net_device *netdev = rxq->netdev;
+
+	rx_free_irq(rxq);
+
+	free_all_rx_skbs(rxq);
+	devm_kfree(&netdev->dev, rxq->irq_name);
+}