workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted

apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

9 files changed, 8692 insertions, 0 deletions

diff --git a/drivers/net/ethernet/microsoft/Kconfig b/drivers/net/ethernet/microsoft/Kconfig
new file mode 100644
index 000000000..3f36ee6a8
--- /dev/null
+++ b/drivers/net/ethernet/microsoft/Kconfig
@@ -0,0 +1,33 @@
+#
+# Microsoft Azure network device configuration
+#
+
+config NET_VENDOR_MICROSOFT
+	bool "Microsoft Network Devices"
+	default y
+	help
+	  If you have a network (Ethernet) device belonging to this class, say Y.
+
+	  Note that the answer to this question doesn't directly affect the
+	  kernel: saying N will just cause the configurator to skip the
+	  question about Microsoft network devices. If you say Y, you will be
+	  asked for your specific device in the following question.
+
+if NET_VENDOR_MICROSOFT
+
+config MICROSOFT_MANA
+	tristate "Microsoft Azure Network Adapter (MANA) support"
+	depends on PCI_MSI
+	depends on X86_64 || (ARM64 && !CPU_BIG_ENDIAN)
+	depends on PCI_HYPERV
+	select AUXILIARY_BUS
+	select PAGE_POOL
+	select NET_SHAPER
+	help
+	  This driver supports Microsoft Azure Network Adapter (MANA).
+	  So far, the driver is only supported on X86_64.
+
+	  To compile this driver as a module, choose M here.
+	  The module will be called mana.
+
+endif #NET_VENDOR_MICROSOFT
diff --git a/drivers/net/ethernet/microsoft/Makefile b/drivers/net/ethernet/microsoft/Makefile
new file mode 100644
index 000000000..d2ddc2181
--- /dev/null
+++ b/drivers/net/ethernet/microsoft/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the Microsoft Azure network device driver.
+#
+
+obj-$(CONFIG_MICROSOFT_MANA) += mana/
diff --git a/drivers/net/ethernet/microsoft/mana/Makefile b/drivers/net/ethernet/microsoft/mana/Makefile
new file mode 100644
index 000000000..e16a4221f
--- /dev/null
+++ b/drivers/net/ethernet/microsoft/mana/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+#
+# Makefile for the Microsoft Azure Network Adapter driver
+
+obj-$(CONFIG_MICROSOFT_MANA) += mana.o
+mana-objs := gdma_main.o shm_channel.o hw_channel.o mana_en.o mana_ethtool.o mana_bpf.o
diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
new file mode 100644
index 000000000..a0fdd052d
--- /dev/null
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -0,0 +1,2515 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright (c) 2021, Microsoft Corporation. */
+
+#include <linux/debugfs.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/sizes.h>
+#include <linux/utsname.h>
+#include <linux/version.h>
+#include <linux/msi.h>
+#include <linux/irqdomain.h>
+#include <linux/export.h>
+
+#include <net/mana/mana.h>
+#include <net/mana/hw_channel.h>
+
+struct dentry *mana_debugfs_root;
+
+struct mana_dev_recovery {
+	struct list_head list;
+	struct pci_dev *pdev;
+	enum gdma_eqe_type type;
+};
+
+static struct mana_dev_recovery_work {
+	struct list_head dev_list;
+	struct delayed_work work;
+
+	/* Lock for dev_list above */
+	spinlock_t lock;
+} mana_dev_recovery_work;
+
+static u32 mana_gd_r32(struct gdma_context *g, u64 offset)
+{
+	return readl(g->bar0_va + offset);
+}
+
+static u64 mana_gd_r64(struct gdma_context *g, u64 offset)
+{
+	return readq(g->bar0_va + offset);
+}
+
+static int mana_gd_init_pf_regs(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	u64 remaining_barsize;
+	u64 sriov_base_off;
+	u64 sriov_shm_off;
+
+	gc->db_page_size = mana_gd_r32(gc, GDMA_PF_REG_DB_PAGE_SIZE) & 0xFFFF;
+
+	/* mana_gd_ring_doorbell() accesses offsets up to DOORBELL_OFFSET_EQ
+	 * (0xFF8) + 8 bytes = 4KB within each doorbell page, so the page
+	 * size must be at least SZ_4K.
+	 */
+	if (gc->db_page_size < SZ_4K) {
+		dev_err(gc->dev,
+			"Doorbell page size %llu too small (min %u)\n",
+			gc->db_page_size, SZ_4K);
+		return -EPROTO;
+	}
+
+	gc->db_page_off = mana_gd_r64(gc, GDMA_PF_REG_DB_PAGE_OFF);
+
+	/* Validate doorbell offset is within BAR0 */
+	if (gc->db_page_off >= gc->bar0_size) {
+		dev_err(gc->dev,
+			"Doorbell offset 0x%llx exceeds BAR0 size 0x%llx\n",
+			gc->db_page_off, (u64)gc->bar0_size);
+		return -EPROTO;
+	}
+
+	gc->db_page_base = gc->bar0_va + gc->db_page_off;
+	gc->phys_db_page_base = gc->bar0_pa + gc->db_page_off;
+
+	sriov_base_off = mana_gd_r64(gc, GDMA_SRIOV_REG_CFG_BASE_OFF);
+	if (sriov_base_off >= gc->bar0_size ||
+	    gc->bar0_size - sriov_base_off <
+		GDMA_PF_REG_SHM_OFF + sizeof(u64) ||
+	    !IS_ALIGNED(sriov_base_off, sizeof(u64))) {
+		dev_err(gc->dev,
+			"SRIOV base offset 0x%llx out of range or unaligned (BAR0 size 0x%llx)\n",
+			sriov_base_off, (u64)gc->bar0_size);
+		return -EPROTO;
+	}
+
+	remaining_barsize = gc->bar0_size - sriov_base_off;
+	sriov_shm_off = mana_gd_r64(gc, sriov_base_off + GDMA_PF_REG_SHM_OFF);
+	if (sriov_shm_off >= remaining_barsize ||
+	    remaining_barsize - sriov_shm_off < SMC_APERTURE_SIZE ||
+	    !IS_ALIGNED(sriov_shm_off, sizeof(u32))) {
+		dev_err(gc->dev,
+			"SRIOV SHM offset 0x%llx out of range or unaligned (BAR0 size 0x%llx)\n",
+			sriov_shm_off, (u64)gc->bar0_size);
+		return -EPROTO;
+	}
+
+	gc->shm_base = gc->bar0_va + sriov_base_off + sriov_shm_off;
+
+	return 0;
+}
+
+static int mana_gd_init_vf_regs(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	u64 shm_off;
+
+	gc->db_page_size = mana_gd_r32(gc, GDMA_REG_DB_PAGE_SIZE) & 0xFFFF;
+
+	/* mana_gd_ring_doorbell() accesses offsets up to DOORBELL_OFFSET_EQ
+	 * (0xFF8) + 8 bytes = 4KB within each doorbell page, so the page
+	 * size must be at least SZ_4K.
+	 */
+	if (gc->db_page_size < SZ_4K) {
+		dev_err(gc->dev,
+			"Doorbell page size %llu too small (min %u)\n",
+			gc->db_page_size, SZ_4K);
+		return -EPROTO;
+	}
+
+	gc->db_page_off = mana_gd_r64(gc, GDMA_REG_DB_PAGE_OFFSET);
+
+	/* Validate doorbell offset is within BAR0 */
+	if (gc->db_page_off >= gc->bar0_size) {
+		dev_err(gc->dev,
+			"Doorbell offset 0x%llx exceeds BAR0 size 0x%llx\n",
+			gc->db_page_off, (u64)gc->bar0_size);
+		return -EPROTO;
+	}
+
+	gc->db_page_base = gc->bar0_va + gc->db_page_off;
+	gc->phys_db_page_base = gc->bar0_pa + gc->db_page_off;
+
+	shm_off = mana_gd_r64(gc, GDMA_REG_SHM_OFFSET);
+	if (shm_off >= gc->bar0_size ||
+	    gc->bar0_size - shm_off < SMC_APERTURE_SIZE ||
+	    !IS_ALIGNED(shm_off, sizeof(u32))) {
+		dev_err(gc->dev,
+			"SHM offset 0x%llx out of range or unaligned (BAR0 size 0x%llx)\n",
+			shm_off, (u64)gc->bar0_size);
+		return -EPROTO;
+	}
+
+	gc->shm_base = gc->bar0_va + shm_off;
+
+	return 0;
+}
+
+static int mana_gd_init_registers(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+
+	if (gc->is_pf && !gc->is_pf2)
+		return mana_gd_init_pf_regs(pdev);
+	else
+		return mana_gd_init_vf_regs(pdev);
+}
+
+/* Suppress logging when we set timeout to zero */
+bool mana_need_log(struct gdma_context *gc, int err)
+{
+	struct hw_channel_context *hwc;
+
+	if (err != -ETIMEDOUT)
+		return true;
+
+	if (!gc)
+		return true;
+
+	hwc = gc->hwc.driver_data;
+	if (hwc && hwc->hwc_timeout == 0)
+		return false;
+
+	return true;
+}
+
+static int mana_gd_query_max_resources(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	struct gdma_query_max_resources_resp resp = {};
+	struct gdma_general_req req = {};
+	unsigned int max_num_queues;
+	u8 bm_hostmode;
+	u16 num_ports;
+	int err;
+
+	/* Reset msi_sharing so it is recomputed from current hardware
+	 * state. On resume, num_online_cpus() or num_msix_usable may
+	 * have changed, making dedicated MSI-X feasible where it was
+	 * not before. Only reset on platforms that support dynamic
+	 * MSI-X allocation; on non-dyn platforms msi_sharing is
+	 * unconditionally true (set in mana_gd_setup_hwc_irqs).
+	 */
+	if (pci_msix_can_alloc_dyn(to_pci_dev(gc->dev)))
+		gc->msi_sharing = false;
+
+	mana_gd_init_req_hdr(&req.hdr, GDMA_QUERY_MAX_RESOURCES,
+			     sizeof(req), sizeof(resp));
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err || resp.hdr.status) {
+		dev_err(gc->dev, "Failed to query resource info: %d, 0x%x\n",
+			err, resp.hdr.status);
+		return err ? err : -EPROTO;
+	}
+
+	if (!pci_msix_can_alloc_dyn(pdev)) {
+		if (gc->num_msix_usable > resp.max_msix)
+			gc->num_msix_usable = resp.max_msix;
+	} else {
+		/* If dynamic allocation is enabled we have already allocated
+		 * hwc msi
+		 */
+		gc->num_msix_usable = min(resp.max_msix, num_online_cpus() + 1);
+	}
+
+	if (gc->num_msix_usable <= 1)
+		return -ENOSPC;
+
+	gc->max_num_queues = num_online_cpus();
+	if (gc->max_num_queues > MANA_MAX_NUM_QUEUES)
+		gc->max_num_queues = MANA_MAX_NUM_QUEUES;
+
+	if (gc->max_num_queues > resp.max_eq)
+		gc->max_num_queues = resp.max_eq;
+
+	if (gc->max_num_queues > resp.max_cq)
+		gc->max_num_queues = resp.max_cq;
+
+	if (gc->max_num_queues > resp.max_sq)
+		gc->max_num_queues = resp.max_sq;
+
+	if (gc->max_num_queues > resp.max_rq)
+		gc->max_num_queues = resp.max_rq;
+
+	/* The Hardware Channel (HWC) used 1 MSI-X */
+	if (gc->max_num_queues > gc->num_msix_usable - 1)
+		gc->max_num_queues = gc->num_msix_usable - 1;
+
+	if (gc->max_num_queues == 0)
+		return -ENOSPC;
+
+	debugfs_create_u32("num_msix_usable", 0400, gc->mana_pci_debugfs,
+			   &gc->num_msix_usable);
+	debugfs_create_u32("max_num_queues", 0400, gc->mana_pci_debugfs,
+			   &gc->max_num_queues);
+
+	err = mana_gd_query_device_cfg(gc, MANA_MAJOR_VERSION,
+				       MANA_MINOR_VERSION,
+				       MANA_MICRO_VERSION,
+				       &num_ports, &bm_hostmode);
+	if (err)
+		return err;
+
+	if (!num_ports) {
+		dev_err(gc->dev, "Failed to detect any vPort\n");
+		return -EINVAL;
+	}
+
+	/* Cap to the same limit used by mana_probe() for port instantiation,
+	 * so MSI-X and queue budgeting matches the actual port count.
+	 */
+	if (num_ports > MAX_PORTS_IN_MANA_DEV)
+		num_ports = MAX_PORTS_IN_MANA_DEV;
+
+	/*
+	 * Adjust the per-vPort max queue count to allow dedicated
+	 * MSIx for each vPort. Prefer at least MANA_DEF_NUM_QUEUES,
+	 * but the hardware max (gc->max_num_queues) takes precedence.
+	 */
+	max_num_queues = (gc->num_msix_usable - 1) / num_ports;
+	max_num_queues = rounddown_pow_of_two(max(max_num_queues, 1U));
+	if (max_num_queues < MANA_DEF_NUM_QUEUES)
+		max_num_queues = MANA_DEF_NUM_QUEUES;
+
+	/*
+	 * Use dedicated MSIx for EQs whenever possible, use MSIx sharing for
+	 * Ethernet EQs when (max_num_queues * num_ports > num_msix_usable - 1).
+	 */
+	max_num_queues = min(gc->max_num_queues, max_num_queues);
+	if (max_num_queues * num_ports > gc->num_msix_usable - 1)
+		gc->msi_sharing = true;
+
+	/* If MSI is shared, use max allowed value */
+	if (gc->msi_sharing)
+		gc->max_num_queues_vport = min(gc->num_msix_usable - 1,
+					       gc->max_num_queues);
+	else
+		gc->max_num_queues_vport = max_num_queues;
+
+	dev_info(gc->dev, "MSI sharing mode %u max queues %u\n",
+		 gc->msi_sharing, gc->max_num_queues_vport);
+
+	return 0;
+}
+
+static int mana_gd_query_hwc_timeout(struct pci_dev *pdev, u32 *timeout_val)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	struct gdma_query_hwc_timeout_resp resp = {};
+	struct gdma_query_hwc_timeout_req req = {};
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, GDMA_QUERY_HWC_TIMEOUT,
+			     sizeof(req), sizeof(resp));
+	req.timeout_ms = *timeout_val;
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err || resp.hdr.status)
+		return err ? err : -EPROTO;
+
+	*timeout_val = resp.timeout_ms;
+
+	return 0;
+}
+
+static int mana_gd_detect_devices(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	struct gdma_list_devices_resp resp = {};
+	struct gdma_general_req req = {};
+	struct gdma_dev_id dev;
+	int found_dev = 0;
+	u16 dev_type;
+	int err;
+	u32 i;
+
+	mana_gd_init_req_hdr(&req.hdr, GDMA_LIST_DEVICES, sizeof(req),
+			     sizeof(resp));
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err || resp.hdr.status) {
+		dev_err(gc->dev, "Failed to detect devices: %d, 0x%x\n", err,
+			resp.hdr.status);
+		return err ? err : -EPROTO;
+	}
+
+	for (i = 0; i < GDMA_DEV_LIST_SIZE &&
+	     found_dev < resp.num_of_devs; i++) {
+		dev = resp.devs[i];
+		dev_type = dev.type;
+
+		/* Skip empty devices */
+		if (dev.as_uint32 == 0)
+			continue;
+
+		found_dev++;
+
+		/* HWC is already detected in mana_hwc_create_channel(). */
+		if (dev_type == GDMA_DEVICE_HWC)
+			continue;
+
+		if (dev_type == GDMA_DEVICE_MANA) {
+			gc->mana.gdma_context = gc;
+			gc->mana.dev_id = dev;
+		} else if (dev_type == GDMA_DEVICE_MANA_IB) {
+			gc->mana_ib.dev_id = dev;
+			gc->mana_ib.gdma_context = gc;
+		}
+	}
+
+	return gc->mana.dev_id.type == 0 ? -ENODEV : 0;
+}
+
+int mana_gd_send_request(struct gdma_context *gc, u32 req_len, const void *req,
+			 u32 resp_len, void *resp)
+{
+	struct hw_channel_context *hwc = gc->hwc.driver_data;
+
+	return mana_hwc_send_request(hwc, req_len, req, resp_len, resp);
+}
+EXPORT_SYMBOL_NS(mana_gd_send_request, "NET_MANA");
+
+int mana_gd_alloc_memory(struct gdma_context *gc, unsigned int length,
+			 struct gdma_mem_info *gmi)
+{
+	dma_addr_t dma_handle;
+	void *buf;
+
+	if (length < MANA_PAGE_SIZE || !is_power_of_2(length))
+		return -EINVAL;
+
+	gmi->dev = gc->dev;
+	buf = dma_alloc_coherent(gmi->dev, length, &dma_handle, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	gmi->dma_handle = dma_handle;
+	gmi->virt_addr = buf;
+	gmi->length = length;
+
+	return 0;
+}
+
+void mana_gd_free_memory(struct gdma_mem_info *gmi)
+{
+	dma_free_coherent(gmi->dev, gmi->length, gmi->virt_addr,
+			  gmi->dma_handle);
+}
+
+static int mana_gd_create_hw_eq(struct gdma_context *gc,
+				struct gdma_queue *queue)
+{
+	struct gdma_create_queue_resp resp = {};
+	struct gdma_create_queue_req req = {};
+	int err;
+
+	if (queue->type != GDMA_EQ)
+		return -EINVAL;
+
+	mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_QUEUE,
+			     sizeof(req), sizeof(resp));
+
+	req.hdr.dev_id = queue->gdma_dev->dev_id;
+	req.type = queue->type;
+	req.pdid = queue->gdma_dev->pdid;
+	req.doolbell_id = queue->gdma_dev->doorbell;
+	req.gdma_region = queue->mem_info.dma_region_handle;
+	req.queue_size = queue->queue_size;
+	req.log2_throttle_limit = queue->eq.log2_throttle_limit;
+	req.eq_pci_msix_index = queue->eq.msix_index;
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err || resp.hdr.status) {
+		dev_err(gc->dev, "Failed to create queue: %d, 0x%x\n", err,
+			resp.hdr.status);
+		return err ? err : -EPROTO;
+	}
+
+	queue->id = resp.queue_index;
+	queue->eq.disable_needed = true;
+	queue->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION;
+	return 0;
+}
+
+static int mana_gd_disable_queue(struct gdma_queue *queue)
+{
+	struct gdma_context *gc = queue->gdma_dev->gdma_context;
+	struct gdma_disable_queue_req req = {};
+	struct gdma_general_resp resp = {};
+	int err;
+
+	WARN_ON(queue->type != GDMA_EQ);
+
+	mana_gd_init_req_hdr(&req.hdr, GDMA_DISABLE_QUEUE,
+			     sizeof(req), sizeof(resp));
+
+	req.hdr.dev_id = queue->gdma_dev->dev_id;
+	req.type = queue->type;
+	req.queue_index =  queue->id;
+	req.alloc_res_id_on_creation = 1;
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err || resp.hdr.status) {
+		if (mana_need_log(gc, err))
+			dev_err(gc->dev, "Failed to disable queue: %d, 0x%x\n", err,
+				resp.hdr.status);
+		return err ? err : -EPROTO;
+	}
+
+	return 0;
+}
+
+#define DOORBELL_OFFSET_SQ	0x0
+#define DOORBELL_OFFSET_RQ	0x400
+#define DOORBELL_OFFSET_CQ	0x800
+#define DOORBELL_OFFSET_EQ	0xFF8
+
+static void mana_gd_ring_doorbell(struct gdma_context *gc, u32 db_index,
+				  enum gdma_queue_type q_type, u32 qid,
+				  u32 tail_ptr, u8 num_req)
+{
+	void __iomem *addr = gc->db_page_base + gc->db_page_size * db_index;
+	union gdma_doorbell_entry e = {};
+
+	switch (q_type) {
+	case GDMA_EQ:
+		e.eq.id = qid;
+		e.eq.tail_ptr = tail_ptr;
+		e.eq.arm = num_req;
+
+		addr += DOORBELL_OFFSET_EQ;
+		break;
+
+	case GDMA_CQ:
+		e.cq.id = qid;
+		e.cq.tail_ptr = tail_ptr;
+		e.cq.arm = num_req;
+
+		addr += DOORBELL_OFFSET_CQ;
+		break;
+
+	case GDMA_RQ:
+		e.rq.id = qid;
+		e.rq.tail_ptr = tail_ptr;
+		e.rq.wqe_cnt = num_req;
+
+		addr += DOORBELL_OFFSET_RQ;
+		break;
+
+	case GDMA_SQ:
+		e.sq.id = qid;
+		e.sq.tail_ptr = tail_ptr;
+
+		addr += DOORBELL_OFFSET_SQ;
+		break;
+
+	default:
+		WARN_ON(1);
+		return;
+	}
+
+	/* Ensure all writes are done before ring doorbell */
+	wmb();
+
+	writeq(e.as_uint64, addr);
+}
+
+void mana_gd_wq_ring_doorbell(struct gdma_context *gc, struct gdma_queue *queue)
+{
+	/* Hardware Spec specifies that software client should set 0 for
+	 * wqe_cnt for Receive Queues. This value is not used in Send Queues.
+	 */
+	mana_gd_ring_doorbell(gc, queue->gdma_dev->doorbell, queue->type,
+			      queue->id, queue->head * GDMA_WQE_BU_SIZE, 0);
+}
+EXPORT_SYMBOL_NS(mana_gd_wq_ring_doorbell, "NET_MANA");
+
+void mana_gd_ring_cq(struct gdma_queue *cq, u8 arm_bit)
+{
+	struct gdma_context *gc = cq->gdma_dev->gdma_context;
+
+	u32 num_cqe = cq->queue_size / GDMA_CQE_SIZE;
+
+	u32 head = cq->head % (num_cqe << GDMA_CQE_OWNER_BITS);
+
+	mana_gd_ring_doorbell(gc, cq->gdma_dev->doorbell, cq->type, cq->id,
+			      head, arm_bit);
+}
+EXPORT_SYMBOL_NS(mana_gd_ring_cq, "NET_MANA");
+
+#define MANA_SERVICE_PERIOD 10
+
+static void mana_serv_rescan(struct pci_dev *pdev)
+{
+	struct pci_bus *parent;
+
+	pci_lock_rescan_remove();
+
+	parent = pdev->bus;
+	if (!parent) {
+		dev_err(&pdev->dev, "MANA service: no parent bus\n");
+		goto out;
+	}
+
+	pci_stop_and_remove_bus_device(pdev);
+	pci_rescan_bus(parent);
+
+out:
+	pci_unlock_rescan_remove();
+}
+
+static void mana_serv_fpga(struct pci_dev *pdev)
+{
+	struct pci_bus *bus, *parent;
+
+	pci_lock_rescan_remove();
+
+	bus = pdev->bus;
+	if (!bus) {
+		dev_err(&pdev->dev, "MANA service: no bus\n");
+		goto out;
+	}
+
+	parent = bus->parent;
+	if (!parent) {
+		dev_err(&pdev->dev, "MANA service: no parent bus\n");
+		goto out;
+	}
+
+	pci_stop_and_remove_bus_device(bus->self);
+
+	msleep(MANA_SERVICE_PERIOD * 1000);
+
+	pci_rescan_bus(parent);
+
+out:
+	pci_unlock_rescan_remove();
+}
+
+static void mana_serv_reset(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	struct hw_channel_context *hwc;
+	int ret;
+
+	if (!gc) {
+		/* Perform PCI rescan on device if GC is not set up */
+		dev_err(&pdev->dev, "MANA service: GC not setup, rescanning\n");
+		mana_serv_rescan(pdev);
+		return;
+	}
+
+	hwc = gc->hwc.driver_data;
+	if (!hwc) {
+		dev_err(&pdev->dev, "MANA service: no HWC\n");
+		goto out;
+	}
+
+	/* HWC is not responding in this case, so don't wait */
+	hwc->hwc_timeout = 0;
+
+	dev_info(&pdev->dev, "MANA reset cycle start\n");
+
+	mana_gd_suspend(pdev, PMSG_SUSPEND);
+
+	msleep(MANA_SERVICE_PERIOD * 1000);
+
+	ret = mana_gd_resume(pdev);
+	if (ret == -ETIMEDOUT || ret == -EPROTO) {
+		/* Perform PCI rescan on device if we failed on HWC */
+		dev_err(&pdev->dev, "MANA service: resume failed, rescanning\n");
+		mana_serv_rescan(pdev);
+		return;
+	}
+
+	if (ret)
+		dev_info(&pdev->dev, "MANA reset cycle failed err %d\n", ret);
+	else
+		dev_info(&pdev->dev, "MANA reset cycle completed\n");
+
+out:
+	clear_bit(GC_IN_SERVICE, &gc->flags);
+}
+
+static void mana_do_service(enum gdma_eqe_type type, struct pci_dev *pdev)
+{
+	switch (type) {
+	case GDMA_EQE_HWC_FPGA_RECONFIG:
+		mana_serv_fpga(pdev);
+		break;
+
+	case GDMA_EQE_HWC_RESET_REQUEST:
+		mana_serv_reset(pdev);
+		break;
+
+	default:
+		dev_err(&pdev->dev, "MANA service: unknown type %d\n", type);
+		break;
+	}
+}
+
+static void mana_recovery_delayed_func(struct work_struct *w)
+{
+	struct mana_dev_recovery_work *work;
+	struct mana_dev_recovery *dev;
+	unsigned long flags;
+
+	work = container_of(w, struct mana_dev_recovery_work, work.work);
+
+	spin_lock_irqsave(&work->lock, flags);
+
+	while (!list_empty(&work->dev_list)) {
+		dev = list_first_entry(&work->dev_list,
+				       struct mana_dev_recovery, list);
+		list_del(&dev->list);
+		spin_unlock_irqrestore(&work->lock, flags);
+
+		mana_do_service(dev->type, dev->pdev);
+		pci_dev_put(dev->pdev);
+		kfree(dev);
+
+		spin_lock_irqsave(&work->lock, flags);
+	}
+
+	spin_unlock_irqrestore(&work->lock, flags);
+}
+
+static void mana_serv_func(struct work_struct *w)
+{
+	struct mana_serv_work *mns_wk;
+	struct pci_dev *pdev;
+
+	mns_wk = container_of(w, struct mana_serv_work, serv_work);
+	pdev = mns_wk->pdev;
+
+	if (pdev)
+		mana_do_service(mns_wk->type, pdev);
+
+	pci_dev_put(pdev);
+	kfree(mns_wk);
+	module_put(THIS_MODULE);
+}
+
+int mana_schedule_serv_work(struct gdma_context *gc, enum gdma_eqe_type type)
+{
+	struct mana_serv_work *mns_wk;
+
+	if (test_and_set_bit(GC_IN_SERVICE, &gc->flags)) {
+		dev_info(gc->dev, "Already in service\n");
+		return -EBUSY;
+	}
+
+	if (!try_module_get(THIS_MODULE)) {
+		dev_info(gc->dev, "Module is unloading\n");
+		clear_bit(GC_IN_SERVICE, &gc->flags);
+		return -ENODEV;
+	}
+
+	mns_wk = kzalloc(sizeof(*mns_wk), GFP_ATOMIC);
+	if (!mns_wk) {
+		module_put(THIS_MODULE);
+		clear_bit(GC_IN_SERVICE, &gc->flags);
+		return -ENOMEM;
+	}
+
+	dev_info(gc->dev, "Start MANA service type:%d\n", type);
+	mns_wk->pdev = to_pci_dev(gc->dev);
+	mns_wk->type = type;
+	pci_dev_get(mns_wk->pdev);
+	INIT_WORK(&mns_wk->serv_work, mana_serv_func);
+	schedule_work(&mns_wk->serv_work);
+	return 0;
+}
+
+static void mana_gd_process_eqe(struct gdma_queue *eq)
+{
+	u32 head = eq->head % (eq->queue_size / GDMA_EQE_SIZE);
+	struct gdma_context *gc = eq->gdma_dev->gdma_context;
+	struct gdma_eqe *eq_eqe_ptr = eq->queue_mem_ptr;
+	union gdma_eqe_info eqe_info;
+	enum gdma_eqe_type type;
+	struct gdma_event event;
+	struct gdma_queue *cq;
+	struct gdma_eqe *eqe;
+	u32 cq_id;
+
+	eqe = &eq_eqe_ptr[head];
+	eqe_info.as_uint32 = eqe->eqe_info;
+	type = eqe_info.type;
+
+	switch (type) {
+	case GDMA_EQE_COMPLETION:
+		cq_id = eqe->details[0] & 0xFFFFFF;
+		if (WARN_ON_ONCE(cq_id >= gc->max_num_cqs))
+			break;
+
+		cq = gc->cq_table[cq_id];
+		if (WARN_ON_ONCE(!cq || cq->type != GDMA_CQ || cq->id != cq_id))
+			break;
+
+		if (cq->cq.callback)
+			cq->cq.callback(cq->cq.context, cq);
+
+		break;
+
+	case GDMA_EQE_TEST_EVENT:
+		gc->test_event_eq_id = eq->id;
+		complete(&gc->eq_test_event);
+		break;
+
+	case GDMA_EQE_HWC_INIT_EQ_ID_DB:
+	case GDMA_EQE_HWC_INIT_DATA:
+	case GDMA_EQE_HWC_INIT_DONE:
+	case GDMA_EQE_HWC_SOC_SERVICE:
+	case GDMA_EQE_RNIC_QP_FATAL:
+	case GDMA_EQE_HWC_SOC_RECONFIG_DATA:
+		if (!eq->eq.callback)
+			break;
+
+		event.type = type;
+		memcpy(&event.details, &eqe->details, GDMA_EVENT_DATA_SIZE);
+		eq->eq.callback(eq->eq.context, eq, &event);
+		break;
+
+	case GDMA_EQE_HWC_FPGA_RECONFIG:
+	case GDMA_EQE_HWC_RESET_REQUEST:
+		dev_info(gc->dev, "Recv MANA service type:%d\n", type);
+
+		if (!test_and_set_bit(GC_PROBE_SUCCEEDED, &gc->flags)) {
+			/*
+			 * Device is in probe and we received a hardware reset
+			 * event, the probe function will detect that the flag
+			 * has changed and perform service procedure.
+			 */
+			dev_info(gc->dev,
+				 "Service is to be processed in probe\n");
+			break;
+		}
+		mana_schedule_serv_work(gc, type);
+		break;
+
+	default:
+		break;
+	}
+}
+
+static void mana_gd_process_eq_events(void *arg)
+{
+	u32 owner_bits, new_bits, old_bits;
+	union gdma_eqe_info eqe_info;
+	struct gdma_eqe *eq_eqe_ptr;
+	struct gdma_queue *eq = arg;
+	struct gdma_context *gc;
+	struct gdma_eqe *eqe;
+	u32 head, num_eqe;
+	int i;
+
+	gc = eq->gdma_dev->gdma_context;
+
+	num_eqe = eq->queue_size / GDMA_EQE_SIZE;
+	eq_eqe_ptr = eq->queue_mem_ptr;
+
+	/* Process up to 5 EQEs at a time, and update the HW head. */
+	for (i = 0; i < 5; i++) {
+		eqe = &eq_eqe_ptr[eq->head % num_eqe];
+		eqe_info.as_uint32 = eqe->eqe_info;
+		owner_bits = eqe_info.owner_bits;
+
+		old_bits = (eq->head / num_eqe - 1) & GDMA_EQE_OWNER_MASK;
+		/* No more entries */
+		if (owner_bits == old_bits) {
+			/* return here without ringing the doorbell */
+			if (i == 0)
+				return;
+			break;
+		}
+
+		new_bits = (eq->head / num_eqe) & GDMA_EQE_OWNER_MASK;
+		if (owner_bits != new_bits) {
+			dev_err(gc->dev, "EQ %d: overflow detected\n", eq->id);
+			break;
+		}
+
+		/* Per GDMA spec, rmb is necessary after checking owner_bits, before
+		 * reading eqe.
+		 */
+		rmb();
+
+		mana_gd_process_eqe(eq);
+
+		eq->head++;
+	}
+
+	head = eq->head % (num_eqe << GDMA_EQE_OWNER_BITS);
+
+	mana_gd_ring_doorbell(gc, eq->gdma_dev->doorbell, eq->type, eq->id,
+			      head, SET_ARM_BIT);
+}
+
+static int mana_gd_register_irq(struct gdma_queue *queue,
+				const struct gdma_queue_spec *spec)
+{
+	struct gdma_dev *gd = queue->gdma_dev;
+	struct gdma_irq_context *gic;
+	struct gdma_context *gc;
+	unsigned int msi_index;
+	unsigned long flags;
+	struct device *dev;
+	int err = 0;
+
+	gc = gd->gdma_context;
+	dev = gc->dev;
+	msi_index = spec->eq.msix_index;
+
+	if (msi_index >= gc->num_msix_usable) {
+		err = -ENOSPC;
+		dev_err(dev, "Register IRQ err:%d, msi:%u nMSI:%u",
+			err, msi_index, gc->num_msix_usable);
+
+		return err;
+	}
+
+	queue->eq.msix_index = msi_index;
+	/* The caller acquired a GIC reference via mana_gd_get_gic().
+	 * That refcount prevents mana_gd_put_gic() from erasing this
+	 * irq_contexts entry concurrently.
+	 */
+	gic = xa_load(&gc->irq_contexts, msi_index);
+	if (WARN_ON(!gic))
+		return -EINVAL;
+
+	spin_lock_irqsave(&gic->lock, flags);
+	list_add_rcu(&queue->entry, &gic->eq_list);
+	spin_unlock_irqrestore(&gic->lock, flags);
+
+	return 0;
+}
+
+static void mana_gd_deregister_irq(struct gdma_queue *queue)
+{
+	struct gdma_dev *gd = queue->gdma_dev;
+	struct gdma_irq_context *gic;
+	struct gdma_context *gc;
+	unsigned int msix_index;
+	unsigned long flags;
+	struct gdma_queue *eq;
+
+	gc = gd->gdma_context;
+
+	/* At most num_online_cpus() + 1 interrupts are used. */
+	msix_index = queue->eq.msix_index;
+	if (WARN_ON(msix_index >= gc->num_msix_usable))
+		return;
+
+	/* The caller releases the GIC reference via mana_gd_put_gic()
+	 * after this function returns. The refcount guarantees this
+	 * irq_contexts entry is still valid.
+	 */
+	gic = xa_load(&gc->irq_contexts, msix_index);
+	if (WARN_ON(!gic))
+		return;
+
+	spin_lock_irqsave(&gic->lock, flags);
+	list_for_each_entry_rcu(eq, &gic->eq_list, entry) {
+		if (queue == eq) {
+			list_del_rcu(&eq->entry);
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&gic->lock, flags);
+
+	synchronize_rcu();
+}
+
+int mana_gd_test_eq(struct gdma_context *gc, struct gdma_queue *eq)
+{
+	struct gdma_generate_test_event_req req = {};
+	struct gdma_general_resp resp = {};
+	struct device *dev = gc->dev;
+	int err;
+
+	mutex_lock(&gc->eq_test_event_mutex);
+
+	init_completion(&gc->eq_test_event);
+	gc->test_event_eq_id = INVALID_QUEUE_ID;
+
+	mana_gd_init_req_hdr(&req.hdr, GDMA_GENERATE_TEST_EQE,
+			     sizeof(req), sizeof(resp));
+
+	req.hdr.dev_id = eq->gdma_dev->dev_id;
+	req.queue_index = eq->id;
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err) {
+		if (mana_need_log(gc, err))
+			dev_err(dev, "test_eq failed: %d\n", err);
+		goto out;
+	}
+
+	err = -EPROTO;
+
+	if (resp.hdr.status) {
+		dev_err(dev, "test_eq failed: 0x%x\n", resp.hdr.status);
+		goto out;
+	}
+
+	if (!wait_for_completion_timeout(&gc->eq_test_event, 30 * HZ)) {
+		dev_err(dev, "test_eq timed out on queue %d\n", eq->id);
+		goto out;
+	}
+
+	if (eq->id != gc->test_event_eq_id) {
+		dev_err(dev, "test_eq got an event on wrong queue %d (%d)\n",
+			gc->test_event_eq_id, eq->id);
+		goto out;
+	}
+
+	err = 0;
+out:
+	mutex_unlock(&gc->eq_test_event_mutex);
+	return err;
+}
+
+static void mana_gd_destroy_eq(struct gdma_context *gc, bool flush_evenets,
+			       struct gdma_queue *queue)
+{
+	int err;
+
+	if (flush_evenets) {
+		err = mana_gd_test_eq(gc, queue);
+		if (err && mana_need_log(gc, err))
+			dev_warn(gc->dev, "Failed to flush EQ: %d\n", err);
+	}
+
+	mana_gd_deregister_irq(queue);
+
+	if (queue->eq.disable_needed)
+		mana_gd_disable_queue(queue);
+}
+
+static int mana_gd_create_eq(struct gdma_dev *gd,
+			     const struct gdma_queue_spec *spec,
+			     bool create_hwq, struct gdma_queue *queue)
+{
+	struct gdma_context *gc = gd->gdma_context;
+	struct device *dev = gc->dev;
+	u32 log2_num_entries;
+	int err;
+
+	queue->eq.msix_index = INVALID_PCI_MSIX_INDEX;
+	queue->id = INVALID_QUEUE_ID;
+
+	log2_num_entries = ilog2(queue->queue_size / GDMA_EQE_SIZE);
+
+	if (spec->eq.log2_throttle_limit > log2_num_entries) {
+		dev_err(dev, "EQ throttling limit (%lu) > maximum EQE (%u)\n",
+			spec->eq.log2_throttle_limit, log2_num_entries);
+		return -EINVAL;
+	}
+
+	err = mana_gd_register_irq(queue, spec);
+	if (err) {
+		dev_err(dev, "Failed to register irq: %d\n", err);
+		return err;
+	}
+
+	queue->eq.callback = spec->eq.callback;
+	queue->eq.context = spec->eq.context;
+	queue->head |= INITIALIZED_OWNER_BIT(log2_num_entries);
+	queue->eq.log2_throttle_limit = spec->eq.log2_throttle_limit ?: 1;
+
+	if (create_hwq) {
+		err = mana_gd_create_hw_eq(gc, queue);
+		if (err)
+			goto out;
+
+		err = mana_gd_test_eq(gc, queue);
+		if (err)
+			goto out;
+	}
+
+	return 0;
+out:
+	dev_err(dev, "Failed to create EQ: %d\n", err);
+	mana_gd_destroy_eq(gc, false, queue);
+	queue->eq.msix_index = INVALID_PCI_MSIX_INDEX;
+	return err;
+}
+
+static void mana_gd_create_cq(const struct gdma_queue_spec *spec,
+			      struct gdma_queue *queue)
+{
+	u32 log2_num_entries = ilog2(spec->queue_size / GDMA_CQE_SIZE);
+
+	queue->head |= INITIALIZED_OWNER_BIT(log2_num_entries);
+	queue->cq.parent = spec->cq.parent_eq;
+	queue->cq.context = spec->cq.context;
+	queue->cq.callback = spec->cq.callback;
+}
+
+static void mana_gd_destroy_cq(struct gdma_context *gc,
+			       struct gdma_queue *queue)
+{
+	u32 id = queue->id;
+
+	if (id >= gc->max_num_cqs)
+		return;
+
+	if (!gc->cq_table[id])
+		return;
+
+	gc->cq_table[id] = NULL;
+}
+
+int mana_gd_create_hwc_queue(struct gdma_dev *gd,
+			     const struct gdma_queue_spec *spec,
+			     struct gdma_queue **queue_ptr)
+{
+	struct gdma_context *gc = gd->gdma_context;
+	struct gdma_mem_info *gmi;
+	struct gdma_queue *queue;
+	int err;
+
+	queue = kzalloc_obj(*queue);
+	if (!queue)
+		return -ENOMEM;
+
+	gmi = &queue->mem_info;
+	err = mana_gd_alloc_memory(gc, spec->queue_size, gmi);
+	if (err) {
+		dev_err(gc->dev, "GDMA queue type: %d, size: %u, gdma memory allocation err: %d\n",
+			spec->type, spec->queue_size, err);
+		goto free_q;
+	}
+
+	queue->head = 0;
+	queue->tail = 0;
+	queue->queue_mem_ptr = gmi->virt_addr;
+	queue->queue_size = spec->queue_size;
+	queue->monitor_avl_buf = spec->monitor_avl_buf;
+	queue->type = spec->type;
+	queue->gdma_dev = gd;
+
+	if (spec->type == GDMA_EQ)
+		err = mana_gd_create_eq(gd, spec, false, queue);
+	else if (spec->type == GDMA_CQ)
+		mana_gd_create_cq(spec, queue);
+
+	if (err)
+		goto out;
+
+	*queue_ptr = queue;
+	return 0;
+out:
+	dev_err(gc->dev, "Failed to create queue type %d of size %u, err: %d\n",
+		spec->type, spec->queue_size, err);
+	mana_gd_free_memory(gmi);
+free_q:
+	kfree(queue);
+	return err;
+}
+
+int mana_gd_destroy_dma_region(struct gdma_context *gc, u64 dma_region_handle)
+{
+	struct gdma_destroy_dma_region_req req = {};
+	struct gdma_general_resp resp = {};
+	int err;
+
+	if (dma_region_handle == GDMA_INVALID_DMA_REGION)
+		return 0;
+
+	mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_DMA_REGION, sizeof(req),
+			     sizeof(resp));
+	req.dma_region_handle = dma_region_handle;
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err || resp.hdr.status) {
+		if (mana_need_log(gc, err))
+			dev_err(gc->dev, "Failed to destroy DMA region: %d, 0x%x\n",
+				err, resp.hdr.status);
+		return -EPROTO;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_NS(mana_gd_destroy_dma_region, "NET_MANA");
+
+static int mana_gd_create_dma_region(struct gdma_dev *gd,
+				     struct gdma_mem_info *gmi)
+{
+	unsigned int num_page = gmi->length / MANA_PAGE_SIZE;
+	struct gdma_create_dma_region_req *req = NULL;
+	struct gdma_create_dma_region_resp resp = {};
+	struct gdma_context *gc = gd->gdma_context;
+	struct hw_channel_context *hwc;
+	u32 length = gmi->length;
+	size_t req_msg_size;
+	int err;
+	int i;
+
+	if (length < MANA_PAGE_SIZE || !is_power_of_2(length))
+		return -EINVAL;
+
+	if (!MANA_PAGE_ALIGNED(gmi->virt_addr))
+		return -EINVAL;
+
+	hwc = gc->hwc.driver_data;
+	req_msg_size = struct_size(req, page_addr_list, num_page);
+	if (req_msg_size > hwc->max_req_msg_size)
+		return -EINVAL;
+
+	req = kzalloc(req_msg_size, GFP_KERNEL);
+	if (!req)
+		return -ENOMEM;
+
+	mana_gd_init_req_hdr(&req->hdr, GDMA_CREATE_DMA_REGION,
+			     req_msg_size, sizeof(resp));
+	req->length = length;
+	req->offset_in_page = 0;
+	req->gdma_page_type = GDMA_PAGE_TYPE_4K;
+	req->page_count = num_page;
+	req->page_addr_list_len = num_page;
+
+	for (i = 0; i < num_page; i++)
+		req->page_addr_list[i] = gmi->dma_handle +  i * MANA_PAGE_SIZE;
+
+	err = mana_gd_send_request(gc, req_msg_size, req, sizeof(resp), &resp);
+	if (err)
+		goto out;
+
+	if (resp.hdr.status ||
+	    resp.dma_region_handle == GDMA_INVALID_DMA_REGION) {
+		dev_err(gc->dev, "Failed to create DMA region: 0x%x\n",
+			resp.hdr.status);
+		err = -EPROTO;
+		goto out;
+	}
+
+	gmi->dma_region_handle = resp.dma_region_handle;
+	dev_dbg(gc->dev, "Created DMA region handle 0x%llx\n",
+		gmi->dma_region_handle);
+out:
+	if (err)
+		dev_dbg(gc->dev,
+			"Failed to create DMA region of length: %u, page_type: %d, status: 0x%x, err: %d\n",
+			length, req->gdma_page_type, resp.hdr.status, err);
+	kfree(req);
+	return err;
+}
+
+int mana_gd_create_mana_eq(struct gdma_dev *gd,
+			   const struct gdma_queue_spec *spec,
+			   struct gdma_queue **queue_ptr)
+{
+	struct gdma_context *gc = gd->gdma_context;
+	struct gdma_mem_info *gmi;
+	struct gdma_queue *queue;
+	int err;
+
+	if (spec->type != GDMA_EQ)
+		return -EINVAL;
+
+	queue = kzalloc_obj(*queue);
+	if (!queue)
+		return -ENOMEM;
+
+	gmi = &queue->mem_info;
+	err = mana_gd_alloc_memory(gc, spec->queue_size, gmi);
+	if (err) {
+		dev_err(gc->dev, "GDMA queue type: %d, size: %u, gdma memory allocation err: %d\n",
+			spec->type, spec->queue_size, err);
+		goto free_q;
+	}
+
+	err = mana_gd_create_dma_region(gd, gmi);
+	if (err)
+		goto out;
+
+	queue->head = 0;
+	queue->tail = 0;
+	queue->queue_mem_ptr = gmi->virt_addr;
+	queue->queue_size = spec->queue_size;
+	queue->monitor_avl_buf = spec->monitor_avl_buf;
+	queue->type = spec->type;
+	queue->gdma_dev = gd;
+
+	err = mana_gd_create_eq(gd, spec, true, queue);
+	if (err)
+		goto out;
+
+	*queue_ptr = queue;
+	return 0;
+out:
+	dev_err(gc->dev, "Failed to create queue type %d of size: %u, err: %d\n",
+		spec->type, spec->queue_size, err);
+	mana_gd_free_memory(gmi);
+free_q:
+	kfree(queue);
+	return err;
+}
+EXPORT_SYMBOL_NS(mana_gd_create_mana_eq, "NET_MANA");
+
+int mana_gd_create_mana_wq_cq(struct gdma_dev *gd,
+			      const struct gdma_queue_spec *spec,
+			      struct gdma_queue **queue_ptr)
+{
+	struct gdma_context *gc = gd->gdma_context;
+	struct gdma_mem_info *gmi;
+	struct gdma_queue *queue;
+	int err;
+
+	if (spec->type != GDMA_CQ && spec->type != GDMA_SQ &&
+	    spec->type != GDMA_RQ)
+		return -EINVAL;
+
+	queue = kzalloc_obj(*queue);
+	if (!queue)
+		return -ENOMEM;
+
+	queue->id = INVALID_QUEUE_ID;
+
+	gmi = &queue->mem_info;
+	err = mana_gd_alloc_memory(gc, spec->queue_size, gmi);
+	if (err) {
+		dev_err(gc->dev, "GDMA queue type: %d, size: %u, memory allocation err: %d\n",
+			spec->type, spec->queue_size, err);
+		goto free_q;
+	}
+
+	err = mana_gd_create_dma_region(gd, gmi);
+	if (err)
+		goto out;
+
+	queue->head = 0;
+	queue->tail = 0;
+	queue->queue_mem_ptr = gmi->virt_addr;
+	queue->queue_size = spec->queue_size;
+	queue->monitor_avl_buf = spec->monitor_avl_buf;
+	queue->type = spec->type;
+	queue->gdma_dev = gd;
+
+	if (spec->type == GDMA_CQ)
+		mana_gd_create_cq(spec, queue);
+
+	*queue_ptr = queue;
+	return 0;
+out:
+	dev_err(gc->dev, "Failed to create queue type %d of size: %u, err: %d\n",
+		spec->type, spec->queue_size, err);
+	mana_gd_free_memory(gmi);
+free_q:
+	kfree(queue);
+	return err;
+}
+EXPORT_SYMBOL_NS(mana_gd_create_mana_wq_cq, "NET_MANA");
+
+void mana_gd_destroy_queue(struct gdma_context *gc, struct gdma_queue *queue)
+{
+	struct gdma_mem_info *gmi = &queue->mem_info;
+
+	switch (queue->type) {
+	case GDMA_EQ:
+		mana_gd_destroy_eq(gc, queue->eq.disable_needed, queue);
+		break;
+
+	case GDMA_CQ:
+		mana_gd_destroy_cq(gc, queue);
+		break;
+
+	case GDMA_RQ:
+		break;
+
+	case GDMA_SQ:
+		break;
+
+	default:
+		dev_err(gc->dev, "Can't destroy unknown queue: type=%d\n",
+			queue->type);
+		return;
+	}
+
+	mana_gd_destroy_dma_region(gc, gmi->dma_region_handle);
+	mana_gd_free_memory(gmi);
+	kfree(queue);
+}
+EXPORT_SYMBOL_NS(mana_gd_destroy_queue, "NET_MANA");
+
+int mana_gd_verify_vf_version(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	struct gdma_verify_ver_resp resp = {};
+	struct gdma_verify_ver_req req = {};
+	struct hw_channel_context *hwc;
+	int err;
+
+	hwc = gc->hwc.driver_data;
+	mana_gd_init_req_hdr(&req.hdr, GDMA_VERIFY_VF_DRIVER_VERSION,
+			     sizeof(req), sizeof(resp));
+
+	req.protocol_ver_min = GDMA_PROTOCOL_FIRST;
+	req.protocol_ver_max = GDMA_PROTOCOL_LAST;
+
+	req.gd_drv_cap_flags1 = GDMA_DRV_CAP_FLAGS1;
+	req.gd_drv_cap_flags2 = GDMA_DRV_CAP_FLAGS2;
+	req.gd_drv_cap_flags3 = GDMA_DRV_CAP_FLAGS3;
+	req.gd_drv_cap_flags4 = GDMA_DRV_CAP_FLAGS4;
+
+	req.drv_ver = 0;	/* Unused*/
+	req.os_type = 0x10;	/* Linux */
+	req.os_ver_major = LINUX_VERSION_MAJOR;
+	req.os_ver_minor = LINUX_VERSION_PATCHLEVEL;
+	req.os_ver_build = LINUX_VERSION_SUBLEVEL;
+	strscpy(req.os_ver_str1, utsname()->sysname, sizeof(req.os_ver_str1));
+	strscpy(req.os_ver_str2, utsname()->release, sizeof(req.os_ver_str2));
+	strscpy(req.os_ver_str3, utsname()->version, sizeof(req.os_ver_str3));
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err || resp.hdr.status) {
+		dev_err(gc->dev, "VfVerifyVersionOutput: %d, status=0x%x\n",
+			err, resp.hdr.status);
+		return err ? err : -EPROTO;
+	}
+	gc->pf_cap_flags1 = resp.pf_cap_flags1;
+	gc->gdma_protocol_ver = resp.gdma_protocol_ver;
+
+	debugfs_create_x64("gdma_protocol_ver", 0400, gc->mana_pci_debugfs,
+			   &gc->gdma_protocol_ver);
+	debugfs_create_x64("pf_cap_flags1", 0400, gc->mana_pci_debugfs,
+			   &gc->pf_cap_flags1);
+
+	if (resp.pf_cap_flags1 & GDMA_DRV_CAP_FLAG_1_HWC_TIMEOUT_RECONFIG) {
+		err = mana_gd_query_hwc_timeout(pdev, &hwc->hwc_timeout);
+		if (err) {
+			dev_err(gc->dev, "Failed to set the hwc timeout %d\n", err);
+			return err;
+		}
+		dev_dbg(gc->dev, "set the hwc timeout to %u\n", hwc->hwc_timeout);
+	}
+	return 0;
+}
+
+int mana_gd_register_device(struct gdma_dev *gd)
+{
+	struct gdma_context *gc = gd->gdma_context;
+	struct gdma_register_device_resp resp = {};
+	struct gdma_general_req req = {};
+	int err;
+
+	gd->pdid = INVALID_PDID;
+	gd->doorbell = INVALID_DOORBELL;
+	gd->gpa_mkey = INVALID_MEM_KEY;
+
+	mana_gd_init_req_hdr(&req.hdr, GDMA_REGISTER_DEVICE, sizeof(req),
+			     sizeof(resp));
+
+	req.hdr.dev_id = gd->dev_id;
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err || resp.hdr.status) {
+		dev_err(gc->dev, "gdma_register_device_resp failed: %d, 0x%x\n",
+			err, resp.hdr.status);
+		return err ? err : -EPROTO;
+	}
+
+	/* Validate that doorbell page for db_id is within the BAR0 region.
+	 * In mana_gd_ring_doorbell(), the address is calculated as:
+	 *   addr = db_page_base + db_page_size * db_id
+	 *        = (bar0_va + db_page_off) + (db_page_size * db_id)
+	 * So we need: db_page_off + db_page_size * (db_id + 1) <= bar0_size
+	 */
+	if (gc->db_page_off + gc->db_page_size * ((u64)resp.db_id + 1) > gc->bar0_size) {
+		dev_err(gc->dev, "Doorbell ID %u out of range\n", resp.db_id);
+		return -EPROTO;
+	}
+
+	gd->pdid = resp.pdid;
+	gd->gpa_mkey = resp.gpa_mkey;
+	gd->doorbell = resp.db_id;
+
+	return 0;
+}
+
+int mana_gd_deregister_device(struct gdma_dev *gd)
+{
+	struct gdma_context *gc = gd->gdma_context;
+	struct gdma_general_resp resp = {};
+	struct gdma_general_req req = {};
+	int err;
+
+	if (gd->pdid == INVALID_PDID)
+		return -EINVAL;
+
+	mana_gd_init_req_hdr(&req.hdr, GDMA_DEREGISTER_DEVICE, sizeof(req),
+			     sizeof(resp));
+
+	req.hdr.dev_id = gd->dev_id;
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err || resp.hdr.status) {
+		if (mana_need_log(gc, err))
+			dev_err(gc->dev, "Failed to deregister device: %d, 0x%x\n",
+				err, resp.hdr.status);
+		if (!err)
+			err = -EPROTO;
+	}
+
+	gd->pdid = INVALID_PDID;
+	gd->doorbell = INVALID_DOORBELL;
+	gd->gpa_mkey = INVALID_MEM_KEY;
+
+	return err;
+}
+
+u32 mana_gd_wq_avail_space(struct gdma_queue *wq)
+{
+	u32 used_space = (wq->head - wq->tail) * GDMA_WQE_BU_SIZE;
+	u32 wq_size = wq->queue_size;
+
+	WARN_ON_ONCE(used_space > wq_size);
+
+	return wq_size - used_space;
+}
+
+u8 *mana_gd_get_wqe_ptr(const struct gdma_queue *wq, u32 wqe_offset)
+{
+	u32 offset = (wqe_offset * GDMA_WQE_BU_SIZE) & (wq->queue_size - 1);
+
+	WARN_ON_ONCE((offset + GDMA_WQE_BU_SIZE) > wq->queue_size);
+
+	return wq->queue_mem_ptr + offset;
+}
+
+static u32 mana_gd_write_client_oob(const struct gdma_wqe_request *wqe_req,
+				    enum gdma_queue_type q_type,
+				    u32 client_oob_size, u32 sgl_data_size,
+				    u8 *wqe_ptr)
+{
+	bool oob_in_sgl = !!(wqe_req->flags & GDMA_WR_OOB_IN_SGL);
+	bool pad_data = !!(wqe_req->flags & GDMA_WR_PAD_BY_SGE0);
+	struct gdma_wqe *header = (struct gdma_wqe *)wqe_ptr;
+	u8 *ptr;
+
+	memset(header, 0, sizeof(struct gdma_wqe));
+	header->num_sge = wqe_req->num_sge;
+	header->inline_oob_size_div4 = client_oob_size / sizeof(u32);
+
+	if (oob_in_sgl) {
+		WARN_ON_ONCE(wqe_req->num_sge < 2);
+
+		header->client_oob_in_sgl = 1;
+
+		if (pad_data)
+			header->last_vbytes = wqe_req->sgl[0].size;
+	}
+
+	if (q_type == GDMA_SQ)
+		header->client_data_unit = wqe_req->client_data_unit;
+
+	/* The size of gdma_wqe + client_oob_size must be less than or equal
+	 * to one Basic Unit (i.e. 32 bytes), so the pointer can't go beyond
+	 * the queue memory buffer boundary.
+	 */
+	ptr = wqe_ptr + sizeof(header);
+
+	if (wqe_req->inline_oob_data && wqe_req->inline_oob_size > 0) {
+		memcpy(ptr, wqe_req->inline_oob_data, wqe_req->inline_oob_size);
+
+		if (client_oob_size > wqe_req->inline_oob_size)
+			memset(ptr + wqe_req->inline_oob_size, 0,
+			       client_oob_size - wqe_req->inline_oob_size);
+	}
+
+	return sizeof(header) + client_oob_size;
+}
+
+static void mana_gd_write_sgl(struct gdma_queue *wq, u8 *wqe_ptr,
+			      const struct gdma_wqe_request *wqe_req)
+{
+	u32 sgl_size = sizeof(struct gdma_sge) * wqe_req->num_sge;
+	const u8 *address = (u8 *)wqe_req->sgl;
+	u8 *base_ptr, *end_ptr;
+	u32 size_to_end;
+
+	base_ptr = wq->queue_mem_ptr;
+	end_ptr = base_ptr + wq->queue_size;
+	size_to_end = (u32)(end_ptr - wqe_ptr);
+
+	if (size_to_end < sgl_size) {
+		memcpy(wqe_ptr, address, size_to_end);
+
+		wqe_ptr = base_ptr;
+		address += size_to_end;
+		sgl_size -= size_to_end;
+	}
+
+	memcpy(wqe_ptr, address, sgl_size);
+}
+
+int mana_gd_post_work_request(struct gdma_queue *wq,
+			      const struct gdma_wqe_request *wqe_req,
+			      struct gdma_posted_wqe_info *wqe_info)
+{
+	u32 client_oob_size = wqe_req->inline_oob_size;
+	u32 sgl_data_size;
+	u32 max_wqe_size;
+	u32 wqe_size;
+	u8 *wqe_ptr;
+
+	if (wqe_req->num_sge == 0)
+		return -EINVAL;
+
+	if (wq->type == GDMA_RQ) {
+		if (client_oob_size != 0)
+			return -EINVAL;
+
+		client_oob_size = INLINE_OOB_SMALL_SIZE;
+
+		max_wqe_size = GDMA_MAX_RQE_SIZE;
+	} else {
+		if (client_oob_size != INLINE_OOB_SMALL_SIZE &&
+		    client_oob_size != INLINE_OOB_LARGE_SIZE)
+			return -EINVAL;
+
+		max_wqe_size = GDMA_MAX_SQE_SIZE;
+	}
+
+	sgl_data_size = sizeof(struct gdma_sge) * wqe_req->num_sge;
+	wqe_size = ALIGN(sizeof(struct gdma_wqe) + client_oob_size +
+			 sgl_data_size, GDMA_WQE_BU_SIZE);
+	if (wqe_size > max_wqe_size)
+		return -EINVAL;
+
+	if (wq->monitor_avl_buf && wqe_size > mana_gd_wq_avail_space(wq))
+		return -ENOSPC;
+
+	if (wqe_info)
+		wqe_info->wqe_size_in_bu = wqe_size / GDMA_WQE_BU_SIZE;
+
+	wqe_ptr = mana_gd_get_wqe_ptr(wq, wq->head);
+	wqe_ptr += mana_gd_write_client_oob(wqe_req, wq->type, client_oob_size,
+					    sgl_data_size, wqe_ptr);
+	if (wqe_ptr >= (u8 *)wq->queue_mem_ptr + wq->queue_size)
+		wqe_ptr -= wq->queue_size;
+
+	mana_gd_write_sgl(wq, wqe_ptr, wqe_req);
+
+	wq->head += wqe_size / GDMA_WQE_BU_SIZE;
+
+	return 0;
+}
+EXPORT_SYMBOL_NS(mana_gd_post_work_request, "NET_MANA");
+
+int mana_gd_post_and_ring(struct gdma_queue *queue,
+			  const struct gdma_wqe_request *wqe_req,
+			  struct gdma_posted_wqe_info *wqe_info)
+{
+	struct gdma_context *gc = queue->gdma_dev->gdma_context;
+	int err;
+
+	err = mana_gd_post_work_request(queue, wqe_req, wqe_info);
+	if (err) {
+		dev_err(gc->dev, "Failed to post work req from queue type %d of size %u (err=%d)\n",
+			queue->type, queue->queue_size, err);
+		return err;
+	}
+
+	mana_gd_wq_ring_doorbell(gc, queue);
+
+	return 0;
+}
+
+static int mana_gd_read_cqe(struct gdma_queue *cq, struct gdma_comp *comp)
+{
+	unsigned int num_cqe = cq->queue_size / sizeof(struct gdma_cqe);
+	struct gdma_cqe *cq_cqe = cq->queue_mem_ptr;
+	u32 owner_bits, new_bits, old_bits;
+	struct gdma_cqe *cqe;
+
+	cqe = &cq_cqe[cq->head % num_cqe];
+	owner_bits = cqe->cqe_info.owner_bits;
+
+	old_bits = (cq->head / num_cqe - 1) & GDMA_CQE_OWNER_MASK;
+	/* Return 0 if no more entries. */
+	if (owner_bits == old_bits)
+		return 0;
+
+	new_bits = (cq->head / num_cqe) & GDMA_CQE_OWNER_MASK;
+	/* Return -1 if overflow detected. */
+	if (WARN_ON_ONCE(owner_bits != new_bits))
+		return -1;
+
+	/* Per GDMA spec, rmb is necessary after checking owner_bits, before
+	 * reading completion info
+	 */
+	rmb();
+
+	comp->wq_num = cqe->cqe_info.wq_num;
+	comp->is_sq = cqe->cqe_info.is_sq;
+	memcpy(comp->cqe_data, cqe->cqe_data, GDMA_COMP_DATA_SIZE);
+
+	return 1;
+}
+
+int mana_gd_poll_cq(struct gdma_queue *cq, struct gdma_comp *comp, int num_cqe)
+{
+	int cqe_idx;
+	int ret;
+
+	for (cqe_idx = 0; cqe_idx < num_cqe; cqe_idx++) {
+		ret = mana_gd_read_cqe(cq, &comp[cqe_idx]);
+
+		if (ret < 0) {
+			cq->head -= cqe_idx;
+			return ret;
+		}
+
+		if (ret == 0)
+			break;
+
+		cq->head++;
+	}
+
+	return cqe_idx;
+}
+EXPORT_SYMBOL_NS(mana_gd_poll_cq, "NET_MANA");
+
+static irqreturn_t mana_gd_intr(int irq, void *arg)
+{
+	struct gdma_irq_context *gic = arg;
+	struct list_head *eq_list = &gic->eq_list;
+	struct gdma_queue *eq;
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(eq, eq_list, entry) {
+		gic->handler(eq);
+	}
+	rcu_read_unlock();
+
+	return IRQ_HANDLED;
+}
+
+void mana_gd_put_gic(struct gdma_context *gc, bool use_msi_bitmap, int msi)
+{
+	struct pci_dev *dev = to_pci_dev(gc->dev);
+	struct gdma_irq_context *gic;
+	struct msi_map irq_map;
+	int irq;
+
+	mutex_lock(&gc->gic_mutex);
+
+	gic = xa_load(&gc->irq_contexts, msi);
+	if (WARN_ON(!gic)) {
+		mutex_unlock(&gc->gic_mutex);
+		return;
+	}
+
+	if (use_msi_bitmap)
+		gic->bitmap_refs--;
+
+	if (use_msi_bitmap && gic->bitmap_refs == 0)
+		clear_bit(msi, gc->msi_bitmap);
+
+	if (!refcount_dec_and_test(&gic->refcount))
+		goto out;
+
+	irq = gic->irq;
+
+	irq_update_affinity_hint(irq, NULL);
+	free_irq(irq, gic);
+
+	if (gic->dyn_msix) {
+		irq_map.virq = irq;
+		irq_map.index = msi;
+		pci_msix_free_irq(dev, irq_map);
+	}
+
+	xa_erase(&gc->irq_contexts, msi);
+	kfree(gic);
+
+out:
+	mutex_unlock(&gc->gic_mutex);
+}
+EXPORT_SYMBOL_NS(mana_gd_put_gic, "NET_MANA");
+
+/*
+ * Get a GIC (GDMA IRQ Context) on a MSI vector
+ * a MSI can be shared between different EQs, this function supports setting
+ * up separate MSIs using a bitmap, or directly using the MSI index
+ *
+ * @use_msi_bitmap:
+ * True if MSI is assigned by this function on available slots from bitmap.
+ * False if MSI is passed from *msi_requested
+ */
+struct gdma_irq_context *mana_gd_get_gic(struct gdma_context *gc,
+					 bool use_msi_bitmap,
+					 int *msi_requested)
+{
+	struct pci_dev *dev = to_pci_dev(gc->dev);
+	struct gdma_irq_context *gic;
+	struct msi_map irq_map = { };
+	int irq;
+	int msi;
+	int err;
+
+	mutex_lock(&gc->gic_mutex);
+
+	if (use_msi_bitmap) {
+		msi = find_first_zero_bit(gc->msi_bitmap, gc->num_msix_usable);
+		if (msi >= gc->num_msix_usable) {
+			dev_err(gc->dev, "No free MSI vectors available\n");
+			gic = ERR_PTR(-ENOSPC);
+			goto out;
+		}
+		*msi_requested = msi;
+	} else {
+		msi = *msi_requested;
+	}
+
+	gic = xa_load(&gc->irq_contexts, msi);
+	if (gic) {
+		refcount_inc(&gic->refcount);
+		if (use_msi_bitmap) {
+			gic->bitmap_refs++;
+			set_bit(msi, gc->msi_bitmap);
+		}
+		goto out;
+	}
+
+	irq = pci_irq_vector(dev, msi);
+	if (irq == -EINVAL) {
+		irq_map = pci_msix_alloc_irq_at(dev, msi, NULL);
+		if (!irq_map.virq) {
+			err = irq_map.index;
+			dev_err(gc->dev,
+				"Failed to alloc irq_map msi %d err %d\n",
+				msi, err);
+			gic = ERR_PTR(err);
+			goto out;
+		}
+		irq = irq_map.virq;
+		msi = irq_map.index;
+		*msi_requested = msi;
+	}
+
+	gic = kzalloc(sizeof(*gic), GFP_KERNEL);
+	if (!gic) {
+		gic = ERR_PTR(-ENOMEM);
+		if (irq_map.virq)
+			pci_msix_free_irq(dev, irq_map);
+		goto out;
+	}
+
+	gic->handler = mana_gd_process_eq_events;
+	gic->msi = msi;
+	gic->irq = irq;
+	INIT_LIST_HEAD(&gic->eq_list);
+	spin_lock_init(&gic->lock);
+
+	if (!gic->msi)
+		snprintf(gic->name, MANA_IRQ_NAME_SZ, "mana_hwc@pci:%s",
+			 pci_name(dev));
+	else
+		snprintf(gic->name, MANA_IRQ_NAME_SZ, "mana_msi%d@pci:%s",
+			 gic->msi, pci_name(dev));
+
+	err = request_irq(irq, mana_gd_intr, 0, gic->name, gic);
+	if (err) {
+		dev_err(gc->dev, "Failed to request irq %d %s\n",
+			irq, gic->name);
+		kfree(gic);
+		gic = ERR_PTR(err);
+		if (irq_map.virq)
+			pci_msix_free_irq(dev, irq_map);
+		goto out;
+	}
+
+	gic->dyn_msix = !!irq_map.virq;
+	refcount_set(&gic->refcount, 1);
+	gic->bitmap_refs = use_msi_bitmap ? 1 : 0;
+
+	err = xa_err(xa_store(&gc->irq_contexts, msi, gic, GFP_KERNEL));
+	if (err) {
+		dev_err(gc->dev, "Failed to store irq context for msi %d: %d\n",
+			msi, err);
+		free_irq(irq, gic);
+		kfree(gic);
+		gic = ERR_PTR(err);
+		if (irq_map.virq)
+			pci_msix_free_irq(dev, irq_map);
+		goto out;
+	}
+
+	if (use_msi_bitmap)
+		set_bit(msi, gc->msi_bitmap);
+
+out:
+	mutex_unlock(&gc->gic_mutex);
+	return gic;
+}
+EXPORT_SYMBOL_NS(mana_gd_get_gic, "NET_MANA");
+
+int mana_gd_alloc_res_map(u32 res_avail, struct gdma_resource *r)
+{
+	r->map = bitmap_zalloc(res_avail, GFP_KERNEL);
+	if (!r->map)
+		return -ENOMEM;
+
+	r->size = res_avail;
+	spin_lock_init(&r->lock);
+
+	return 0;
+}
+
+void mana_gd_free_res_map(struct gdma_resource *r)
+{
+	bitmap_free(r->map);
+	r->map = NULL;
+	r->size = 0;
+}
+
+/*
+ * Spread on CPUs with the following heuristics:
+ *
+ * 1. No more than one IRQ per CPU, if possible;
+ * 2. NUMA locality is the second priority;
+ * 3. Sibling dislocality is the last priority.
+ *
+ * Let's consider this topology:
+ *
+ * Node            0               1
+ * Core        0       1       2       3
+ * CPU       0   1   2   3   4   5   6   7
+ *
+ * The most performant IRQ distribution based on the above topology
+ * and heuristics may look like this:
+ *
+ * IRQ     Nodes   Cores   CPUs
+ * 0       1       0       0-1
+ * 1       1       1       2-3
+ * 2       1       0       0-1
+ * 3       1       1       2-3
+ * 4       2       2       4-5
+ * 5       2       3       6-7
+ * 6       2       2       4-5
+ * 7       2       3       6-7
+ *
+ * The heuristics is implemented as follows.
+ *
+ * The outer for_each() loop resets the 'weight' to the actual number
+ * of CPUs in the hop. Then inner for_each() loop decrements it by the
+ * number of sibling groups (cores) while assigning first set of IRQs
+ * to each group. IRQs 0 and 1 above are distributed this way.
+ *
+ * Now, because NUMA locality is more important, we should walk the
+ * same set of siblings and assign 2nd set of IRQs (2 and 3), and it's
+ * implemented by the medium while() loop. We do like this unless the
+ * number of IRQs assigned on this hop will not become equal to number
+ * of CPUs in the hop (weight == 0). Then we switch to the next hop and
+ * do the same thing.
+ */
+
+static int irq_setup(unsigned int *irqs, unsigned int len, int node,
+		     bool skip_first_cpu)
+{
+	const struct cpumask *next, *prev = cpu_none_mask;
+	cpumask_var_t cpus __free(free_cpumask_var);
+	int cpu, weight;
+
+	if (!alloc_cpumask_var(&cpus, GFP_KERNEL))
+		return -ENOMEM;
+
+	rcu_read_lock();
+	for_each_numa_hop_mask(next, node) {
+		weight = cpumask_weight_andnot(next, prev);
+		while (weight > 0) {
+			cpumask_andnot(cpus, next, prev);
+			for_each_cpu(cpu, cpus) {
+				cpumask_andnot(cpus, cpus, topology_sibling_cpumask(cpu));
+				--weight;
+
+				if (unlikely(skip_first_cpu)) {
+					skip_first_cpu = false;
+					continue;
+				}
+
+				if (len-- == 0)
+					goto done;
+
+				irq_set_affinity_and_hint(*irqs++, topology_sibling_cpumask(cpu));
+			}
+		}
+		prev = next;
+	}
+done:
+	rcu_read_unlock();
+	return 0;
+}
+
+static int mana_gd_setup_dyn_irqs(struct pci_dev *pdev, int nvec)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	struct gdma_irq_context *gic;
+	bool skip_first_cpu = false;
+	int *irqs, err, i, msi;
+
+	irqs = kmalloc_objs(int, nvec);
+	if (!irqs)
+		return -ENOMEM;
+
+	/*
+	 * While processing the next pci irq vector, we start with index 1,
+	 * as IRQ vector at index 0 is already processed for HWC.
+	 * However, the population of irqs array starts with index 0, to be
+	 * further used in irq_setup()
+	 */
+	for (i = 1; i <= nvec; i++) {
+		msi = i;
+		gic = mana_gd_get_gic(gc, false, &msi);
+		if (IS_ERR(gic)) {
+			err = PTR_ERR(gic);
+			goto free_irq;
+		}
+
+		irqs[i - 1] = gic->irq;
+	}
+
+	/*
+	 * When calling irq_setup() for dynamically added IRQs, if number of
+	 * CPUs is more than or equal to allocated MSI-X, we need to skip the
+	 * first CPU sibling group since they are already affinitized to HWC IRQ
+	 */
+	cpus_read_lock();
+	if (gc->num_msix_usable <= num_online_cpus())
+		skip_first_cpu = true;
+
+	err = irq_setup(irqs, nvec, gc->numa_node, skip_first_cpu);
+	if (err) {
+		cpus_read_unlock();
+		goto free_irq;
+	}
+
+	cpus_read_unlock();
+	kfree(irqs);
+	return 0;
+
+free_irq:
+	for (i -= 1; i > 0; i--)
+		mana_gd_put_gic(gc, false, i);
+	kfree(irqs);
+	return err;
+}
+
+static int mana_gd_setup_irqs(struct pci_dev *pdev, int nvec)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	struct gdma_irq_context *gic;
+	int *irqs, *start_irqs;
+	unsigned int cpu;
+	int err, i, msi;
+
+	irqs = kmalloc_objs(int, nvec);
+	if (!irqs)
+		return -ENOMEM;
+
+	start_irqs = irqs;
+
+	for (i = 0; i < nvec; i++) {
+		msi = i;
+		gic = mana_gd_get_gic(gc, false, &msi);
+		if (IS_ERR(gic)) {
+			err = PTR_ERR(gic);
+			goto free_irq;
+		}
+
+		irqs[i] = gic->irq;
+	}
+
+	/* If number of IRQ is one extra than number of online CPUs,
+	 * then we need to assign IRQ0 (hwc irq) and IRQ1 to
+	 * same CPU.
+	 * Else we will use different CPUs for IRQ0 and IRQ1.
+	 * Also we are using cpumask_local_spread instead of
+	 * cpumask_first for the node, because the node can be
+	 * mem only.
+	 */
+	cpus_read_lock();
+	if (nvec > num_online_cpus()) {
+		cpu = cpumask_local_spread(0, gc->numa_node);
+		irq_set_affinity_and_hint(irqs[0], cpumask_of(cpu));
+		irqs++;
+		nvec -= 1;
+	}
+
+	err = irq_setup(irqs, nvec, gc->numa_node, false);
+	if (err) {
+		cpus_read_unlock();
+		goto free_irq;
+	}
+
+	cpus_read_unlock();
+	kfree(start_irqs);
+	return 0;
+
+free_irq:
+	for (i -= 1; i >= 0; i--)
+		mana_gd_put_gic(gc, false, i);
+
+	kfree(start_irqs);
+	return err;
+}
+
+static int mana_gd_setup_hwc_irqs(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	unsigned int max_irqs, min_irqs;
+	int nvec, err;
+
+	if (pci_msix_can_alloc_dyn(pdev)) {
+		max_irqs = 1;
+		min_irqs = 1;
+	} else {
+		/* Need 1 interrupt for HWC */
+		max_irqs = min(num_online_cpus(), MANA_MAX_NUM_QUEUES) + 1;
+		min_irqs = 2;
+		gc->msi_sharing = true;
+	}
+
+	nvec = pci_alloc_irq_vectors(pdev, min_irqs, max_irqs, PCI_IRQ_MSIX);
+	if (nvec < 0)
+		return nvec;
+
+	err = mana_gd_setup_irqs(pdev, nvec);
+	if (err) {
+		pci_free_irq_vectors(pdev);
+		return err;
+	}
+
+	gc->num_msix_usable = nvec;
+	gc->max_num_msix = nvec;
+
+	return 0;
+}
+
+static int mana_gd_setup_remaining_irqs(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	struct msi_map irq_map;
+	int max_irqs, i, err;
+
+	if (!pci_msix_can_alloc_dyn(pdev))
+		/* remain irqs are already allocated with HWC IRQ */
+		return 0;
+
+	/* allocate only remaining IRQs*/
+	max_irqs = gc->num_msix_usable - 1;
+
+	for (i = 1; i <= max_irqs; i++) {
+		irq_map = pci_msix_alloc_irq_at(pdev, i, NULL);
+		if (!irq_map.virq) {
+			err = irq_map.index;
+			/* caller will handle cleaning up all allocated
+			 * irqs, after HWC is destroyed
+			 */
+			return err;
+		}
+	}
+
+	err = mana_gd_setup_dyn_irqs(pdev, max_irqs);
+	if (err)
+		return err;
+
+	gc->max_num_msix = gc->max_num_msix + max_irqs;
+
+	return 0;
+}
+
+static void mana_gd_remove_irqs(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	int i;
+
+	if (gc->max_num_msix < 1)
+		return;
+
+	for (i = 0; i < gc->max_num_msix; i++) {
+		if (!xa_load(&gc->irq_contexts, i))
+			continue;
+
+		mana_gd_put_gic(gc, false, i);
+	}
+
+	WARN_ON(!xa_empty(&gc->irq_contexts));
+
+	pci_free_irq_vectors(pdev);
+
+	bitmap_free(gc->msi_bitmap);
+	gc->msi_bitmap = NULL;
+	gc->max_num_msix = 0;
+	gc->num_msix_usable = 0;
+}
+
+static int mana_gd_setup(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	int err;
+
+	gc->mana_pci_debugfs = debugfs_create_dir(pci_name(pdev),
+						  mana_debugfs_root);
+
+	err = mana_gd_init_registers(pdev);
+	if (err)
+		goto remove_debugfs;
+
+	mana_smc_init(&gc->shm_channel, gc->dev, gc->shm_base);
+
+	gc->service_wq = alloc_ordered_workqueue("gdma_service_wq", 0);
+	if (!gc->service_wq) {
+		err = -ENOMEM;
+		goto remove_debugfs;
+	}
+
+	err = mana_gd_setup_hwc_irqs(pdev);
+	if (err) {
+		dev_err(gc->dev, "Failed to setup IRQs for HWC creation: %d\n",
+			err);
+		goto free_workqueue;
+	}
+
+	err = mana_hwc_create_channel(gc);
+	if (err)
+		goto remove_irq;
+
+	err = mana_gd_verify_vf_version(pdev);
+	if (err)
+		goto destroy_hwc;
+
+	err = mana_gd_detect_devices(pdev);
+	if (err)
+		goto destroy_hwc;
+
+	err = mana_gd_query_max_resources(pdev);
+	if (err)
+		goto destroy_hwc;
+
+	err = mana_gd_setup_remaining_irqs(pdev);
+	if (err) {
+		dev_err(gc->dev, "Failed to setup remaining IRQs: %d", err);
+		goto destroy_hwc;
+	}
+
+	if (!gc->msi_sharing) {
+		gc->msi_bitmap = bitmap_zalloc(gc->num_msix_usable, GFP_KERNEL);
+		if (!gc->msi_bitmap) {
+			err = -ENOMEM;
+			goto destroy_hwc;
+		}
+		/* Set bit for HWC */
+		set_bit(0, gc->msi_bitmap);
+	}
+
+	dev_dbg(&pdev->dev, "mana gdma setup successful\n");
+	return 0;
+
+destroy_hwc:
+	mana_hwc_destroy_channel(gc);
+remove_irq:
+	mana_gd_remove_irqs(pdev);
+free_workqueue:
+	destroy_workqueue(gc->service_wq);
+	gc->service_wq = NULL;
+remove_debugfs:
+	debugfs_remove_recursive(gc->mana_pci_debugfs);
+	gc->mana_pci_debugfs = NULL;
+	dev_err(&pdev->dev, "%s failed (error %d)\n", __func__, err);
+	return err;
+}
+
+static void mana_gd_cleanup_device(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+
+	mana_hwc_destroy_channel(gc);
+
+	mana_gd_remove_irqs(pdev);
+
+	if (gc->service_wq) {
+		destroy_workqueue(gc->service_wq);
+		gc->service_wq = NULL;
+	}
+
+	debugfs_remove_recursive(gc->mana_pci_debugfs);
+	gc->mana_pci_debugfs = NULL;
+
+	dev_dbg(&pdev->dev, "mana gdma cleanup successful\n");
+}
+
+static bool mana_is_pf(unsigned short dev_id)
+{
+	return dev_id == MANA_PF_DEVICE_ID || dev_id == MANA_PF2_DEVICE_ID;
+}
+
+static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct gdma_context *gc;
+	void __iomem *bar0_va;
+	int bar = 0;
+	int err;
+
+	/* Each port has 2 CQs, each CQ has at most 1 EQE at a time */
+	BUILD_BUG_ON(2 * MAX_PORTS_IN_MANA_DEV * GDMA_EQE_SIZE > EQ_SIZE);
+
+	err = pci_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to enable pci device (err=%d)\n", err);
+		return -ENXIO;
+	}
+
+	pci_set_master(pdev);
+
+	err = pci_request_regions(pdev, "mana");
+	if (err)
+		goto disable_dev;
+
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (err) {
+		dev_err(&pdev->dev, "DMA set mask failed: %d\n", err);
+		goto release_region;
+	}
+	dma_set_max_seg_size(&pdev->dev, UINT_MAX);
+
+	err = -ENOMEM;
+	gc = vzalloc(sizeof(*gc));
+	if (!gc)
+		goto release_region;
+
+	mutex_init(&gc->eq_test_event_mutex);
+	mutex_init(&gc->gic_mutex);
+	pci_set_drvdata(pdev, gc);
+	gc->bar0_pa = pci_resource_start(pdev, 0);
+	gc->bar0_size = pci_resource_len(pdev, 0);
+
+	bar0_va = pci_iomap(pdev, bar, 0);
+	if (!bar0_va)
+		goto free_gc;
+
+	gc->numa_node = dev_to_node(&pdev->dev);
+	gc->is_pf = mana_is_pf(pdev->device);
+	gc->is_pf2 = (pdev->device == MANA_PF2_DEVICE_ID);
+
+	gc->bar0_va = bar0_va;
+	gc->dev = &pdev->dev;
+	xa_init(&gc->irq_contexts);
+
+	err = mana_gd_setup(pdev);
+	if (err)
+		goto unmap_bar;
+
+	err = mana_probe(&gc->mana, false);
+	if (err)
+		goto cleanup_gd;
+
+	err = mana_rdma_probe(&gc->mana_ib);
+	if (err)
+		goto cleanup_mana;
+
+	/*
+	 * If a hardware reset event has occurred over HWC during probe,
+	 * rollback and perform hardware reset procedure.
+	 */
+	if (test_and_set_bit(GC_PROBE_SUCCEEDED, &gc->flags)) {
+		err = -EPROTO;
+		goto cleanup_mana_rdma;
+	}
+
+	return 0;
+
+cleanup_mana_rdma:
+	mana_rdma_remove(&gc->mana_ib);
+cleanup_mana:
+	mana_remove(&gc->mana, false);
+cleanup_gd:
+	mana_gd_cleanup_device(pdev);
+unmap_bar:
+	xa_destroy(&gc->irq_contexts);
+	pci_iounmap(pdev, bar0_va);
+free_gc:
+	pci_set_drvdata(pdev, NULL);
+	vfree(gc);
+release_region:
+	pci_release_regions(pdev);
+disable_dev:
+	pci_disable_device(pdev);
+	dev_err(&pdev->dev, "gdma probe failed: err = %d\n", err);
+
+	/*
+	 * Hardware could be in recovery mode and the HWC returns TIMEDOUT or
+	 * EPROTO from mana_gd_setup(), mana_probe() or mana_rdma_probe(), or
+	 * we received a hardware reset event over HWC interrupt. In this case,
+	 * perform the device recovery procedure after MANA_SERVICE_PERIOD
+	 * seconds.
+	 */
+	if (err == -ETIMEDOUT || err == -EPROTO) {
+		struct mana_dev_recovery *dev;
+		unsigned long flags;
+
+		dev_info(&pdev->dev, "Start MANA recovery mode\n");
+
+		dev = kzalloc_obj(*dev);
+		if (!dev)
+			return err;
+
+		dev->pdev = pci_dev_get(pdev);
+		dev->type = GDMA_EQE_HWC_RESET_REQUEST;
+
+		spin_lock_irqsave(&mana_dev_recovery_work.lock, flags);
+		list_add_tail(&dev->list, &mana_dev_recovery_work.dev_list);
+		spin_unlock_irqrestore(&mana_dev_recovery_work.lock, flags);
+
+		schedule_delayed_work(&mana_dev_recovery_work.work,
+				      secs_to_jiffies(MANA_SERVICE_PERIOD));
+	}
+
+	return err;
+}
+
+static void mana_gd_remove(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+
+	mana_rdma_remove(&gc->mana_ib);
+	mana_remove(&gc->mana, false);
+
+	mana_gd_cleanup_device(pdev);
+
+	xa_destroy(&gc->irq_contexts);
+
+	pci_iounmap(pdev, gc->bar0_va);
+
+	vfree(gc);
+
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+
+	dev_dbg(&pdev->dev, "mana gdma remove successful\n");
+}
+
+/* The 'state' parameter is not used. */
+int mana_gd_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+
+	mana_rdma_remove(&gc->mana_ib);
+	mana_remove(&gc->mana, true);
+
+	mana_gd_cleanup_device(pdev);
+
+	return 0;
+}
+
+int mana_gd_resume(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+	int err;
+
+	err = mana_gd_setup(pdev);
+	if (err)
+		return err;
+
+	err = mana_probe(&gc->mana, true);
+	if (err)
+		goto cleanup_gd;
+
+	err = mana_rdma_probe(&gc->mana_ib);
+	if (err)
+		mana_rdma_remove(&gc->mana_ib);
+
+	return err;
+
+cleanup_gd:
+	mana_gd_cleanup_device(pdev);
+	return err;
+}
+
+/* Quiesce the device for kexec. This is also called upon reboot/shutdown. */
+static void mana_gd_shutdown(struct pci_dev *pdev)
+{
+	struct gdma_context *gc = pci_get_drvdata(pdev);
+
+	dev_info(&pdev->dev, "Shutdown was called\n");
+
+	mana_rdma_remove(&gc->mana_ib);
+	mana_remove(&gc->mana, true);
+
+	mana_gd_cleanup_device(pdev);
+
+	pci_disable_device(pdev);
+}
+
+static const struct pci_device_id mana_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_MICROSOFT, MANA_PF_DEVICE_ID) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MICROSOFT, MANA_PF2_DEVICE_ID) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MICROSOFT, MANA_VF_DEVICE_ID) },
+	{ }
+};
+
+static struct pci_driver mana_driver = {
+	.name		= "mana",
+	.id_table	= mana_id_table,
+	.probe		= mana_gd_probe,
+	.remove		= mana_gd_remove,
+	.suspend	= mana_gd_suspend,
+	.resume		= mana_gd_resume,
+	.shutdown	= mana_gd_shutdown,
+};
+
+static int __init mana_driver_init(void)
+{
+	int err;
+
+	INIT_LIST_HEAD(&mana_dev_recovery_work.dev_list);
+	spin_lock_init(&mana_dev_recovery_work.lock);
+	INIT_DELAYED_WORK(&mana_dev_recovery_work.work, mana_recovery_delayed_func);
+
+	mana_debugfs_root = debugfs_create_dir("mana", NULL);
+
+	err = pci_register_driver(&mana_driver);
+	if (err) {
+		debugfs_remove(mana_debugfs_root);
+		mana_debugfs_root = NULL;
+	}
+
+	return err;
+}
+
+static void __exit mana_driver_exit(void)
+{
+	struct mana_dev_recovery *dev;
+	unsigned long flags;
+
+	disable_delayed_work_sync(&mana_dev_recovery_work.work);
+
+	spin_lock_irqsave(&mana_dev_recovery_work.lock, flags);
+	while (!list_empty(&mana_dev_recovery_work.dev_list)) {
+		dev = list_first_entry(&mana_dev_recovery_work.dev_list,
+				       struct mana_dev_recovery, list);
+		list_del(&dev->list);
+		pci_dev_put(dev->pdev);
+		kfree(dev);
+	}
+	spin_unlock_irqrestore(&mana_dev_recovery_work.lock, flags);
+
+	pci_unregister_driver(&mana_driver);
+
+	debugfs_remove(mana_debugfs_root);
+
+	mana_debugfs_root = NULL;
+}
+
+module_init(mana_driver_init);
+module_exit(mana_driver_exit);
+
+MODULE_DEVICE_TABLE(pci, mana_id_table);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("Microsoft Azure Network Adapter driver");
diff --git a/drivers/net/ethernet/microsoft/mana/hw_channel.c b/drivers/net/ethernet/microsoft/mana/hw_channel.c
new file mode 100644
index 000000000..e3c24d50d
--- /dev/null
+++ b/drivers/net/ethernet/microsoft/mana/hw_channel.c
@@ -0,0 +1,937 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright (c) 2021, Microsoft Corporation. */
+
+#include <net/mana/gdma.h>
+#include <net/mana/mana.h>
+#include <net/mana/hw_channel.h>
+#include <linux/vmalloc.h>
+
+static int mana_hwc_get_msg_index(struct hw_channel_context *hwc, u16 *msg_id)
+{
+	struct gdma_resource *r = &hwc->inflight_msg_res;
+	unsigned long flags;
+	u32 index;
+
+	down(&hwc->sema);
+
+	spin_lock_irqsave(&r->lock, flags);
+
+	index = find_first_zero_bit(hwc->inflight_msg_res.map,
+				    hwc->inflight_msg_res.size);
+
+	bitmap_set(hwc->inflight_msg_res.map, index, 1);
+
+	spin_unlock_irqrestore(&r->lock, flags);
+
+	*msg_id = index;
+
+	return 0;
+}
+
+static void mana_hwc_put_msg_index(struct hw_channel_context *hwc, u16 msg_id)
+{
+	struct gdma_resource *r = &hwc->inflight_msg_res;
+	unsigned long flags;
+
+	spin_lock_irqsave(&r->lock, flags);
+	bitmap_clear(hwc->inflight_msg_res.map, msg_id, 1);
+	spin_unlock_irqrestore(&r->lock, flags);
+
+	up(&hwc->sema);
+}
+
+static int mana_hwc_verify_resp_msg(const struct hwc_caller_ctx *caller_ctx,
+				    const struct gdma_resp_hdr *resp_msg,
+				    u32 resp_len)
+{
+	if (resp_len < sizeof(*resp_msg))
+		return -EPROTO;
+
+	if (resp_len > caller_ctx->output_buflen)
+		return -EPROTO;
+
+	return 0;
+}
+
+static int mana_hwc_post_rx_wqe(const struct hwc_wq *hwc_rxq,
+				struct hwc_work_request *req)
+{
+	struct device *dev = hwc_rxq->hwc->dev;
+	struct gdma_sge *sge;
+	int err;
+
+	sge = &req->sge;
+	sge->address = (u64)req->buf_sge_addr;
+	sge->mem_key = hwc_rxq->msg_buf->gpa_mkey;
+	sge->size = req->buf_len;
+
+	memset(&req->wqe_req, 0, sizeof(struct gdma_wqe_request));
+	req->wqe_req.sgl = sge;
+	req->wqe_req.num_sge = 1;
+	req->wqe_req.client_data_unit = 0;
+
+	err = mana_gd_post_and_ring(hwc_rxq->gdma_wq, &req->wqe_req, NULL);
+	if (err)
+		dev_err(dev, "Failed to post WQE on HWC RQ: %d\n", err);
+	return err;
+}
+
+static void mana_hwc_handle_resp(struct hw_channel_context *hwc, u32 resp_len,
+				 struct hwc_work_request *rx_req, u16 msg_id)
+{
+	const struct gdma_resp_hdr *resp_msg = rx_req->buf_va;
+	struct hwc_caller_ctx *ctx;
+	int err;
+
+	if (!test_bit(msg_id, hwc->inflight_msg_res.map)) {
+		dev_err(hwc->dev, "hwc_rx: invalid msg_id = %u\n", msg_id);
+		mana_hwc_post_rx_wqe(hwc->rxq, rx_req);
+		return;
+	}
+
+	ctx = hwc->caller_ctx + msg_id;
+	err = mana_hwc_verify_resp_msg(ctx, resp_msg, resp_len);
+	if (err)
+		goto out;
+
+	ctx->status_code = resp_msg->status;
+
+	memcpy(ctx->output_buf, resp_msg, resp_len);
+out:
+	ctx->error = err;
+
+	/* Must post rx wqe before complete(), otherwise the next rx may
+	 * hit no_wqe error.
+	 */
+	mana_hwc_post_rx_wqe(hwc->rxq, rx_req);
+
+	complete(&ctx->comp_event);
+}
+
+static void mana_hwc_init_event_handler(void *ctx, struct gdma_queue *q_self,
+					struct gdma_event *event)
+{
+	union hwc_init_soc_service_type service_data;
+	struct hw_channel_context *hwc = ctx;
+	struct gdma_dev *gd = hwc->gdma_dev;
+	union hwc_init_type_data type_data;
+	union hwc_init_eq_id_db eq_db;
+	struct mana_context *ac;
+	u32 type, val;
+	int ret;
+
+	switch (event->type) {
+	case GDMA_EQE_HWC_INIT_EQ_ID_DB:
+		eq_db.as_uint32 = event->details[0];
+		hwc->cq->gdma_eq->id = eq_db.eq_id;
+		gd->doorbell = eq_db.doorbell;
+		break;
+
+	case GDMA_EQE_HWC_INIT_DATA:
+		type_data.as_uint32 = event->details[0];
+		type = type_data.type;
+		val = type_data.value;
+
+		switch (type) {
+		case HWC_INIT_DATA_CQID:
+			hwc->cq->gdma_cq->id = val;
+			break;
+
+		case HWC_INIT_DATA_RQID:
+			hwc->rxq->gdma_wq->id = val;
+			break;
+
+		case HWC_INIT_DATA_SQID:
+			hwc->txq->gdma_wq->id = val;
+			break;
+
+		case HWC_INIT_DATA_QUEUE_DEPTH:
+			hwc->hwc_init_q_depth_max = (u16)val;
+			break;
+
+		case HWC_INIT_DATA_MAX_REQUEST:
+			hwc->hwc_init_max_req_msg_size = val;
+			break;
+
+		case HWC_INIT_DATA_MAX_RESPONSE:
+			hwc->hwc_init_max_resp_msg_size = val;
+			break;
+
+		case HWC_INIT_DATA_MAX_NUM_CQS:
+			gd->gdma_context->max_num_cqs = val;
+			break;
+
+		case HWC_INIT_DATA_PDID:
+			hwc->gdma_dev->pdid = val;
+			break;
+
+		case HWC_INIT_DATA_GPA_MKEY:
+			hwc->rxq->msg_buf->gpa_mkey = val;
+			hwc->txq->msg_buf->gpa_mkey = val;
+			break;
+
+		case HWC_INIT_DATA_PF_DEST_RQ_ID:
+			hwc->pf_dest_vrq_id = val;
+			break;
+
+		case HWC_INIT_DATA_PF_DEST_CQ_ID:
+			hwc->pf_dest_vrcq_id = val;
+			break;
+		}
+
+		break;
+
+	case GDMA_EQE_HWC_INIT_DONE:
+		complete(&hwc->hwc_init_eqe_comp);
+		break;
+
+	case GDMA_EQE_HWC_SOC_RECONFIG_DATA:
+		type_data.as_uint32 = event->details[0];
+		type = type_data.type;
+		val = type_data.value;
+
+		switch (type) {
+		case HWC_DATA_CFG_HWC_TIMEOUT:
+			hwc->hwc_timeout = val;
+			break;
+
+		case HWC_DATA_HW_LINK_CONNECT:
+		case HWC_DATA_HW_LINK_DISCONNECT:
+			ac = gd->gdma_context->mana.driver_data;
+			if (!ac)
+				break;
+
+			WRITE_ONCE(ac->link_event, type);
+			schedule_work(&ac->link_change_work);
+
+			break;
+
+		default:
+			dev_warn(hwc->dev, "Received unknown reconfig type %u\n", type);
+			break;
+		}
+
+		break;
+	case GDMA_EQE_HWC_SOC_SERVICE:
+		service_data.as_uint32 = event->details[0];
+		type = service_data.type;
+
+		switch (type) {
+		case GDMA_SERVICE_TYPE_RDMA_SUSPEND:
+		case GDMA_SERVICE_TYPE_RDMA_RESUME:
+			ret = mana_rdma_service_event(gd->gdma_context, type);
+			if (ret)
+				dev_err(hwc->dev, "Failed to schedule adev service event: %d\n",
+					ret);
+			break;
+		default:
+			dev_warn(hwc->dev, "Received unknown SOC service type %u\n", type);
+			break;
+		}
+
+		break;
+	default:
+		dev_warn(hwc->dev, "Received unknown gdma event %u\n", event->type);
+		/* Ignore unknown events, which should never happen. */
+		break;
+	}
+}
+
+static void mana_hwc_rx_event_handler(void *ctx, u32 gdma_rxq_id,
+				      const struct hwc_rx_oob *rx_oob)
+{
+	struct hw_channel_context *hwc = ctx;
+	struct hwc_wq *hwc_rxq = hwc->rxq;
+	struct hwc_work_request *rx_req;
+	struct gdma_resp_hdr *resp;
+	struct gdma_wqe *dma_oob;
+	struct gdma_queue *rq;
+	struct gdma_sge *sge;
+	u64 rq_base_addr;
+	u64 rx_req_idx;
+	u16 msg_id;
+	u8 *wqe;
+
+	if (WARN_ON_ONCE(hwc_rxq->gdma_wq->id != gdma_rxq_id))
+		return;
+
+	rq = hwc_rxq->gdma_wq;
+	wqe = mana_gd_get_wqe_ptr(rq, rx_oob->wqe_offset / GDMA_WQE_BU_SIZE);
+	dma_oob = (struct gdma_wqe *)wqe;
+
+	sge = (struct gdma_sge *)(wqe + 8 + dma_oob->inline_oob_size_div4 * 4);
+
+	/* Select the RX work request for virtual address and for reposting. */
+	rq_base_addr = hwc_rxq->msg_buf->mem_info.dma_handle;
+	rx_req_idx = (sge->address - rq_base_addr) / hwc->max_req_msg_size;
+
+	if (rx_req_idx >= hwc_rxq->msg_buf->num_reqs) {
+		dev_err(hwc->dev, "HWC RX: wrong rx_req_idx=%llu, num_reqs=%u\n",
+			rx_req_idx, hwc_rxq->msg_buf->num_reqs);
+		return;
+	}
+
+	rx_req = &hwc_rxq->msg_buf->reqs[rx_req_idx];
+	resp = (struct gdma_resp_hdr *)rx_req->buf_va;
+
+	/* Read msg_id once from DMA buffer to prevent TOCTOU:
+	 * DMA memory is shared/unencrypted in CVMs - host can
+	 * modify it between reads.
+	 */
+	msg_id = READ_ONCE(resp->response.hwc_msg_id);
+	if (msg_id >= hwc->num_inflight_msg) {
+		dev_err(hwc->dev, "HWC RX: wrong msg_id=%u\n", msg_id);
+		return;
+	}
+
+	mana_hwc_handle_resp(hwc, rx_oob->tx_oob_data_size, rx_req, msg_id);
+
+	/* Can no longer use 'resp', because the buffer is posted to the HW
+	 * in mana_hwc_handle_resp() above.
+	 */
+	resp = NULL;
+}
+
+static void mana_hwc_tx_event_handler(void *ctx, u32 gdma_txq_id,
+				      const struct hwc_rx_oob *rx_oob)
+{
+	struct hw_channel_context *hwc = ctx;
+	struct hwc_wq *hwc_txq = hwc->txq;
+
+	WARN_ON_ONCE(!hwc_txq || hwc_txq->gdma_wq->id != gdma_txq_id);
+}
+
+static int mana_hwc_create_gdma_wq(struct hw_channel_context *hwc,
+				   enum gdma_queue_type type, u64 queue_size,
+				   struct gdma_queue **queue)
+{
+	struct gdma_queue_spec spec = {};
+
+	if (type != GDMA_SQ && type != GDMA_RQ)
+		return -EINVAL;
+
+	spec.type = type;
+	spec.monitor_avl_buf = false;
+	spec.queue_size = queue_size;
+
+	return mana_gd_create_hwc_queue(hwc->gdma_dev, &spec, queue);
+}
+
+static int mana_hwc_create_gdma_cq(struct hw_channel_context *hwc,
+				   u64 queue_size,
+				   void *ctx, gdma_cq_callback *cb,
+				   struct gdma_queue *parent_eq,
+				   struct gdma_queue **queue)
+{
+	struct gdma_queue_spec spec = {};
+
+	spec.type = GDMA_CQ;
+	spec.monitor_avl_buf = false;
+	spec.queue_size = queue_size;
+	spec.cq.context = ctx;
+	spec.cq.callback = cb;
+	spec.cq.parent_eq = parent_eq;
+
+	return mana_gd_create_hwc_queue(hwc->gdma_dev, &spec, queue);
+}
+
+static int mana_hwc_create_gdma_eq(struct hw_channel_context *hwc,
+				   u64 queue_size,
+				   void *ctx, gdma_eq_callback *cb,
+				   struct gdma_queue **queue)
+{
+	struct gdma_queue_spec spec = {};
+
+	spec.type = GDMA_EQ;
+	spec.monitor_avl_buf = false;
+	spec.queue_size = queue_size;
+	spec.eq.context = ctx;
+	spec.eq.callback = cb;
+	spec.eq.log2_throttle_limit = DEFAULT_LOG2_THROTTLING_FOR_ERROR_EQ;
+	spec.eq.msix_index = 0;
+
+	return mana_gd_create_hwc_queue(hwc->gdma_dev, &spec, queue);
+}
+
+static void mana_hwc_comp_event(void *ctx, struct gdma_queue *q_self)
+{
+	struct hwc_rx_oob comp_data = {};
+	struct gdma_comp *completions;
+	struct hwc_cq *hwc_cq = ctx;
+	int comp_read, i;
+
+	WARN_ON_ONCE(hwc_cq->gdma_cq != q_self);
+
+	completions = hwc_cq->comp_buf;
+	comp_read = mana_gd_poll_cq(q_self, completions, hwc_cq->queue_depth);
+	WARN_ON_ONCE(comp_read <= 0 || comp_read > hwc_cq->queue_depth);
+
+	for (i = 0; i < comp_read; ++i) {
+		comp_data = *(struct hwc_rx_oob *)completions[i].cqe_data;
+
+		if (completions[i].is_sq)
+			hwc_cq->tx_event_handler(hwc_cq->tx_event_ctx,
+						completions[i].wq_num,
+						&comp_data);
+		else
+			hwc_cq->rx_event_handler(hwc_cq->rx_event_ctx,
+						completions[i].wq_num,
+						&comp_data);
+	}
+
+	mana_gd_ring_cq(q_self, SET_ARM_BIT);
+}
+
+static void mana_hwc_destroy_cq(struct gdma_context *gc, struct hwc_cq *hwc_cq)
+{
+	kfree(hwc_cq->comp_buf);
+
+	if (hwc_cq->gdma_cq)
+		mana_gd_destroy_queue(gc, hwc_cq->gdma_cq);
+
+	if (hwc_cq->gdma_eq)
+		mana_gd_destroy_queue(gc, hwc_cq->gdma_eq);
+
+	kfree(hwc_cq);
+}
+
+static int mana_hwc_create_cq(struct hw_channel_context *hwc, u16 q_depth,
+			      gdma_eq_callback *callback, void *ctx,
+			      hwc_rx_event_handler_t *rx_ev_hdlr,
+			      void *rx_ev_ctx,
+			      hwc_tx_event_handler_t *tx_ev_hdlr,
+			      void *tx_ev_ctx, struct hwc_cq **hwc_cq_ptr)
+{
+	struct gdma_queue *eq, *cq;
+	struct gdma_comp *comp_buf;
+	struct hwc_cq *hwc_cq;
+	u32 eq_size, cq_size;
+	int err;
+
+	eq_size = roundup_pow_of_two(GDMA_EQE_SIZE * q_depth);
+	if (eq_size < MANA_MIN_QSIZE)
+		eq_size = MANA_MIN_QSIZE;
+
+	cq_size = roundup_pow_of_two(GDMA_CQE_SIZE * q_depth);
+	if (cq_size < MANA_MIN_QSIZE)
+		cq_size = MANA_MIN_QSIZE;
+
+	hwc_cq = kzalloc_obj(*hwc_cq);
+	if (!hwc_cq)
+		return -ENOMEM;
+
+	err = mana_hwc_create_gdma_eq(hwc, eq_size, ctx, callback, &eq);
+	if (err) {
+		dev_err(hwc->dev, "Failed to create HWC EQ for RQ: %d\n", err);
+		goto out;
+	}
+	hwc_cq->gdma_eq = eq;
+
+	err = mana_hwc_create_gdma_cq(hwc, cq_size, hwc_cq, mana_hwc_comp_event,
+				      eq, &cq);
+	if (err) {
+		dev_err(hwc->dev, "Failed to create HWC CQ for RQ: %d\n", err);
+		goto out;
+	}
+	hwc_cq->gdma_cq = cq;
+
+	comp_buf = kzalloc_objs(*comp_buf, q_depth);
+	if (!comp_buf) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	hwc_cq->hwc = hwc;
+	hwc_cq->comp_buf = comp_buf;
+	hwc_cq->queue_depth = q_depth;
+	hwc_cq->rx_event_handler = rx_ev_hdlr;
+	hwc_cq->rx_event_ctx = rx_ev_ctx;
+	hwc_cq->tx_event_handler = tx_ev_hdlr;
+	hwc_cq->tx_event_ctx = tx_ev_ctx;
+
+	*hwc_cq_ptr = hwc_cq;
+	return 0;
+out:
+	mana_hwc_destroy_cq(hwc->gdma_dev->gdma_context, hwc_cq);
+	return err;
+}
+
+static int mana_hwc_alloc_dma_buf(struct hw_channel_context *hwc, u16 q_depth,
+				  u32 max_msg_size,
+				  struct hwc_dma_buf **dma_buf_ptr)
+{
+	struct gdma_context *gc = hwc->gdma_dev->gdma_context;
+	struct hwc_work_request *hwc_wr;
+	struct hwc_dma_buf *dma_buf;
+	struct gdma_mem_info *gmi;
+	void *virt_addr;
+	u32 buf_size;
+	u8 *base_pa;
+	int err;
+	u16 i;
+
+	dma_buf = kzalloc_flex(*dma_buf, reqs, q_depth);
+	if (!dma_buf)
+		return -ENOMEM;
+
+	dma_buf->num_reqs = q_depth;
+
+	buf_size = MANA_PAGE_ALIGN(q_depth * max_msg_size);
+
+	gmi = &dma_buf->mem_info;
+	err = mana_gd_alloc_memory(gc, buf_size, gmi);
+	if (err) {
+		dev_err(hwc->dev, "Failed to allocate DMA buffer size: %u, err %d\n",
+			buf_size, err);
+		goto out;
+	}
+
+	virt_addr = dma_buf->mem_info.virt_addr;
+	base_pa = (u8 *)dma_buf->mem_info.dma_handle;
+
+	for (i = 0; i < q_depth; i++) {
+		hwc_wr = &dma_buf->reqs[i];
+
+		hwc_wr->buf_va = virt_addr + i * max_msg_size;
+		hwc_wr->buf_sge_addr = base_pa + i * max_msg_size;
+
+		hwc_wr->buf_len = max_msg_size;
+	}
+
+	*dma_buf_ptr = dma_buf;
+	return 0;
+out:
+	kfree(dma_buf);
+	return err;
+}
+
+static void mana_hwc_dealloc_dma_buf(struct hw_channel_context *hwc,
+				     struct hwc_dma_buf *dma_buf)
+{
+	if (!dma_buf)
+		return;
+
+	mana_gd_free_memory(&dma_buf->mem_info);
+
+	kfree(dma_buf);
+}
+
+static void mana_hwc_destroy_wq(struct hw_channel_context *hwc,
+				struct hwc_wq *hwc_wq)
+{
+	mana_hwc_dealloc_dma_buf(hwc, hwc_wq->msg_buf);
+
+	if (hwc_wq->gdma_wq)
+		mana_gd_destroy_queue(hwc->gdma_dev->gdma_context,
+				      hwc_wq->gdma_wq);
+
+	kfree(hwc_wq);
+}
+
+static int mana_hwc_create_wq(struct hw_channel_context *hwc,
+			      enum gdma_queue_type q_type, u16 q_depth,
+			      u32 max_msg_size, struct hwc_cq *hwc_cq,
+			      struct hwc_wq **hwc_wq_ptr)
+{
+	struct gdma_queue *queue;
+	struct hwc_wq *hwc_wq;
+	u32 queue_size;
+	int err;
+
+	WARN_ON(q_type != GDMA_SQ && q_type != GDMA_RQ);
+
+	if (q_type == GDMA_RQ)
+		queue_size = roundup_pow_of_two(GDMA_MAX_RQE_SIZE * q_depth);
+	else
+		queue_size = roundup_pow_of_two(GDMA_MAX_SQE_SIZE * q_depth);
+
+	if (queue_size < MANA_MIN_QSIZE)
+		queue_size = MANA_MIN_QSIZE;
+
+	hwc_wq = kzalloc_obj(*hwc_wq);
+	if (!hwc_wq)
+		return -ENOMEM;
+
+	err = mana_hwc_create_gdma_wq(hwc, q_type, queue_size, &queue);
+	if (err)
+		goto out;
+
+	hwc_wq->hwc = hwc;
+	hwc_wq->gdma_wq = queue;
+	hwc_wq->queue_depth = q_depth;
+	hwc_wq->hwc_cq = hwc_cq;
+
+	err = mana_hwc_alloc_dma_buf(hwc, q_depth, max_msg_size,
+				     &hwc_wq->msg_buf);
+	if (err)
+		goto out;
+
+	*hwc_wq_ptr = hwc_wq;
+	return 0;
+out:
+	if (err)
+		mana_hwc_destroy_wq(hwc, hwc_wq);
+
+	dev_err(hwc->dev, "Failed to create HWC queue size= %u type= %d err= %d\n",
+		queue_size, q_type, err);
+	return err;
+}
+
+static int mana_hwc_post_tx_wqe(const struct hwc_wq *hwc_txq,
+				struct hwc_work_request *req,
+				u32 dest_virt_rq_id, u32 dest_virt_rcq_id,
+				bool dest_pf)
+{
+	struct device *dev = hwc_txq->hwc->dev;
+	struct hwc_tx_oob *tx_oob;
+	struct gdma_sge *sge;
+	int err;
+
+	if (req->msg_size == 0 || req->msg_size > req->buf_len) {
+		dev_err(dev, "wrong msg_size: %u, buf_len: %u\n",
+			req->msg_size, req->buf_len);
+		return -EINVAL;
+	}
+
+	tx_oob = &req->tx_oob;
+
+	tx_oob->vrq_id = dest_virt_rq_id;
+	tx_oob->dest_vfid = 0;
+	tx_oob->vrcq_id = dest_virt_rcq_id;
+	tx_oob->vscq_id = hwc_txq->hwc_cq->gdma_cq->id;
+	tx_oob->loopback = false;
+	tx_oob->lso_override = false;
+	tx_oob->dest_pf = dest_pf;
+	tx_oob->vsq_id = hwc_txq->gdma_wq->id;
+
+	sge = &req->sge;
+	sge->address = (u64)req->buf_sge_addr;
+	sge->mem_key = hwc_txq->msg_buf->gpa_mkey;
+	sge->size = req->msg_size;
+
+	memset(&req->wqe_req, 0, sizeof(struct gdma_wqe_request));
+	req->wqe_req.sgl = sge;
+	req->wqe_req.num_sge = 1;
+	req->wqe_req.inline_oob_size = sizeof(struct hwc_tx_oob);
+	req->wqe_req.inline_oob_data = tx_oob;
+	req->wqe_req.client_data_unit = 0;
+
+	err = mana_gd_post_and_ring(hwc_txq->gdma_wq, &req->wqe_req, NULL);
+	if (err)
+		dev_err(dev, "Failed to post WQE on HWC SQ: %d\n", err);
+	return err;
+}
+
+static int mana_hwc_init_inflight_msg(struct hw_channel_context *hwc,
+				      u16 num_msg)
+{
+	int err;
+
+	sema_init(&hwc->sema, num_msg);
+
+	err = mana_gd_alloc_res_map(num_msg, &hwc->inflight_msg_res);
+	if (err)
+		dev_err(hwc->dev, "Failed to init inflight_msg_res: %d\n", err);
+	return err;
+}
+
+static int mana_hwc_test_channel(struct hw_channel_context *hwc, u16 q_depth,
+				 u32 max_req_msg_size, u32 max_resp_msg_size)
+{
+	struct gdma_context *gc = hwc->gdma_dev->gdma_context;
+	struct hwc_wq *hwc_rxq = hwc->rxq;
+	struct hwc_work_request *req;
+	struct hwc_caller_ctx *ctx;
+	int err;
+	int i;
+
+	/* Post all WQEs on the RQ */
+	for (i = 0; i < q_depth; i++) {
+		req = &hwc_rxq->msg_buf->reqs[i];
+		err = mana_hwc_post_rx_wqe(hwc_rxq, req);
+		if (err)
+			return err;
+	}
+
+	ctx = kzalloc_objs(*ctx, q_depth);
+	if (!ctx)
+		return -ENOMEM;
+
+	for (i = 0; i < q_depth; ++i)
+		init_completion(&ctx[i].comp_event);
+
+	hwc->caller_ctx = ctx;
+
+	return mana_gd_test_eq(gc, hwc->cq->gdma_eq);
+}
+
+static int mana_hwc_establish_channel(struct gdma_context *gc, u16 *q_depth,
+				      u32 *max_req_msg_size,
+				      u32 *max_resp_msg_size)
+{
+	struct hw_channel_context *hwc = gc->hwc.driver_data;
+	struct gdma_queue *rq = hwc->rxq->gdma_wq;
+	struct gdma_queue *sq = hwc->txq->gdma_wq;
+	struct gdma_queue *eq = hwc->cq->gdma_eq;
+	struct gdma_queue *cq = hwc->cq->gdma_cq;
+	int err;
+
+	init_completion(&hwc->hwc_init_eqe_comp);
+
+	err = mana_smc_setup_hwc(&gc->shm_channel, false,
+				 eq->mem_info.dma_handle,
+				 cq->mem_info.dma_handle,
+				 rq->mem_info.dma_handle,
+				 sq->mem_info.dma_handle,
+				 eq->eq.msix_index);
+	if (err)
+		return err;
+
+	if (!wait_for_completion_timeout(&hwc->hwc_init_eqe_comp, 60 * HZ))
+		return -ETIMEDOUT;
+
+	*q_depth = hwc->hwc_init_q_depth_max;
+	*max_req_msg_size = hwc->hwc_init_max_req_msg_size;
+	*max_resp_msg_size = hwc->hwc_init_max_resp_msg_size;
+
+	/* Both were set in mana_hwc_init_event_handler(). */
+	if (WARN_ON(cq->id >= gc->max_num_cqs))
+		return -EPROTO;
+
+	gc->cq_table = vcalloc(gc->max_num_cqs, sizeof(struct gdma_queue *));
+	if (!gc->cq_table)
+		return -ENOMEM;
+
+	gc->cq_table[cq->id] = cq;
+
+	return 0;
+}
+
+static int mana_hwc_init_queues(struct hw_channel_context *hwc, u16 q_depth,
+				u32 max_req_msg_size, u32 max_resp_msg_size)
+{
+	int err;
+
+	err = mana_hwc_init_inflight_msg(hwc, q_depth);
+	if (err)
+		return err;
+
+	/* CQ is shared by SQ and RQ, so CQ's queue depth is the sum of SQ
+	 * queue depth and RQ queue depth.
+	 */
+	err = mana_hwc_create_cq(hwc, q_depth * 2,
+				 mana_hwc_init_event_handler, hwc,
+				 mana_hwc_rx_event_handler, hwc,
+				 mana_hwc_tx_event_handler, hwc, &hwc->cq);
+	if (err) {
+		dev_err(hwc->dev, "Failed to create HWC CQ: %d\n", err);
+		goto out;
+	}
+
+	err = mana_hwc_create_wq(hwc, GDMA_RQ, q_depth, max_req_msg_size,
+				 hwc->cq, &hwc->rxq);
+	if (err) {
+		dev_err(hwc->dev, "Failed to create HWC RQ: %d\n", err);
+		goto out;
+	}
+
+	err = mana_hwc_create_wq(hwc, GDMA_SQ, q_depth, max_resp_msg_size,
+				 hwc->cq, &hwc->txq);
+	if (err) {
+		dev_err(hwc->dev, "Failed to create HWC SQ: %d\n", err);
+		goto out;
+	}
+
+	hwc->num_inflight_msg = q_depth;
+	hwc->max_req_msg_size = max_req_msg_size;
+
+	return 0;
+out:
+	/* mana_hwc_create_channel() will do the cleanup.*/
+	return err;
+}
+
+int mana_hwc_create_channel(struct gdma_context *gc)
+{
+	u32 max_req_msg_size, max_resp_msg_size;
+	struct gdma_dev *gd = &gc->hwc;
+	struct hw_channel_context *hwc;
+	u16 q_depth_max;
+	int err;
+
+	hwc = kzalloc_obj(*hwc);
+	if (!hwc)
+		return -ENOMEM;
+
+	gd->gdma_context = gc;
+	gd->driver_data = hwc;
+	hwc->gdma_dev = gd;
+	hwc->dev = gc->dev;
+	hwc->hwc_timeout = HW_CHANNEL_WAIT_RESOURCE_TIMEOUT_MS;
+
+	/* HWC's instance number is always 0. */
+	gd->dev_id.as_uint32 = 0;
+	gd->dev_id.type = GDMA_DEVICE_HWC;
+
+	gd->pdid = INVALID_PDID;
+	gd->doorbell = INVALID_DOORBELL;
+
+	/* mana_hwc_init_queues() only creates the required data structures,
+	 * and doesn't touch the HWC device.
+	 */
+	err = mana_hwc_init_queues(hwc, HW_CHANNEL_VF_BOOTSTRAP_QUEUE_DEPTH,
+				   HW_CHANNEL_MAX_REQUEST_SIZE,
+				   HW_CHANNEL_MAX_RESPONSE_SIZE);
+	if (err) {
+		dev_err(hwc->dev, "Failed to initialize HWC: %d\n", err);
+		goto out;
+	}
+
+	err = mana_hwc_establish_channel(gc, &q_depth_max, &max_req_msg_size,
+					 &max_resp_msg_size);
+	if (err) {
+		dev_err(hwc->dev, "Failed to establish HWC: %d\n", err);
+		goto out;
+	}
+
+	err = mana_hwc_test_channel(gc->hwc.driver_data,
+				    HW_CHANNEL_VF_BOOTSTRAP_QUEUE_DEPTH,
+				    max_req_msg_size, max_resp_msg_size);
+	if (err) {
+		dev_err(hwc->dev, "Failed to test HWC: %d\n", err);
+		goto out;
+	}
+
+	return 0;
+out:
+	mana_hwc_destroy_channel(gc);
+	return err;
+}
+
+void mana_hwc_destroy_channel(struct gdma_context *gc)
+{
+	struct hw_channel_context *hwc = gc->hwc.driver_data;
+
+	if (!hwc)
+		return;
+
+	/* gc->max_num_cqs is set in mana_hwc_init_event_handler(). If it's
+	 * non-zero, the HWC worked and we should tear down the HWC here.
+	 */
+	if (gc->max_num_cqs > 0) {
+		mana_smc_teardown_hwc(&gc->shm_channel, false);
+		gc->max_num_cqs = 0;
+	}
+
+	if (hwc->txq)
+		mana_hwc_destroy_wq(hwc, hwc->txq);
+
+	if (hwc->rxq)
+		mana_hwc_destroy_wq(hwc, hwc->rxq);
+
+	if (hwc->cq)
+		mana_hwc_destroy_cq(hwc->gdma_dev->gdma_context, hwc->cq);
+
+	kfree(hwc->caller_ctx);
+	hwc->caller_ctx = NULL;
+
+	mana_gd_free_res_map(&hwc->inflight_msg_res);
+
+	hwc->num_inflight_msg = 0;
+
+	hwc->gdma_dev->doorbell = INVALID_DOORBELL;
+	hwc->gdma_dev->pdid = INVALID_PDID;
+
+	hwc->hwc_timeout = 0;
+
+	kfree(hwc);
+	gc->hwc.driver_data = NULL;
+	gc->hwc.gdma_context = NULL;
+
+	vfree(gc->cq_table);
+	gc->cq_table = NULL;
+}
+
+int mana_hwc_send_request(struct hw_channel_context *hwc, u32 req_len,
+			  const void *req, u32 resp_len, void *resp)
+{
+	struct gdma_context *gc = hwc->gdma_dev->gdma_context;
+	struct hwc_work_request *tx_wr;
+	struct hwc_wq *txq = hwc->txq;
+	struct gdma_req_hdr *req_msg;
+	struct hwc_caller_ctx *ctx;
+	u32 dest_vrcq = 0;
+	u32 dest_vrq = 0;
+	u32 command;
+	u16 msg_id;
+	int err;
+
+	mana_hwc_get_msg_index(hwc, &msg_id);
+
+	tx_wr = &txq->msg_buf->reqs[msg_id];
+
+	if (req_len > tx_wr->buf_len) {
+		dev_err(hwc->dev, "HWC: req msg size: %d > %d\n", req_len,
+			tx_wr->buf_len);
+		err = -EINVAL;
+		goto out;
+	}
+
+	ctx = hwc->caller_ctx + msg_id;
+	ctx->output_buf = resp;
+	ctx->output_buflen = resp_len;
+
+	req_msg = (struct gdma_req_hdr *)tx_wr->buf_va;
+	if (req)
+		memcpy(req_msg, req, req_len);
+
+	req_msg->req.hwc_msg_id = msg_id;
+
+	tx_wr->msg_size = req_len;
+	command = req_msg->req.msg_type;
+
+	if (gc->is_pf) {
+		dest_vrq = hwc->pf_dest_vrq_id;
+		dest_vrcq = hwc->pf_dest_vrcq_id;
+	}
+
+	err = mana_hwc_post_tx_wqe(txq, tx_wr, dest_vrq, dest_vrcq, false);
+	if (err) {
+		dev_err(hwc->dev, "HWC: Failed to post send WQE: %d\n", err);
+		goto out;
+	}
+
+	if (!wait_for_completion_timeout(&ctx->comp_event,
+					 (msecs_to_jiffies(hwc->hwc_timeout)))) {
+		if (hwc->hwc_timeout != 0)
+			dev_err(hwc->dev, "Command 0x%x timed out: %u ms\n",
+				command, hwc->hwc_timeout);
+
+		/* Reduce further waiting if HWC no response */
+		if (hwc->hwc_timeout > 1)
+			hwc->hwc_timeout = 1;
+
+		err = -ETIMEDOUT;
+		goto out;
+	}
+
+	if (ctx->error) {
+		err = ctx->error;
+		goto out;
+	}
+
+	if (ctx->status_code && ctx->status_code != GDMA_STATUS_MORE_ENTRIES) {
+		if (ctx->status_code == GDMA_STATUS_CMD_UNSUPPORTED) {
+			err = -EOPNOTSUPP;
+			goto out;
+		}
+		if (command != MANA_QUERY_PHY_STAT)
+			dev_err(hwc->dev, "Command 0x%x failed with status: 0x%x\n",
+				command, ctx->status_code);
+		err = -EPROTO;
+		goto out;
+	}
+out:
+	mana_hwc_put_msg_index(hwc, msg_id);
+	return err;
+}
diff --git a/drivers/net/ethernet/microsoft/mana/mana_bpf.c b/drivers/net/ethernet/microsoft/mana/mana_bpf.c
new file mode 100644
index 000000000..b5e9bb184
--- /dev/null
+++ b/drivers/net/ethernet/microsoft/mana/mana_bpf.c
@@ -0,0 +1,266 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright (c) 2021, Microsoft Corporation. */
+
+#include <linux/inetdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/mm.h>
+#include <linux/bpf.h>
+#include <linux/bpf_trace.h>
+#include <net/xdp.h>
+
+#include <net/mana/mana.h>
+
+void mana_xdp_tx(struct sk_buff *skb, struct net_device *ndev)
+{
+	u16 txq_idx = skb_get_queue_mapping(skb);
+	struct netdev_queue *ndevtxq;
+	int rc;
+
+	__skb_push(skb, ETH_HLEN);
+
+	ndevtxq = netdev_get_tx_queue(ndev, txq_idx);
+	__netif_tx_lock(ndevtxq, smp_processor_id());
+
+	rc = mana_start_xmit(skb, ndev);
+
+	__netif_tx_unlock(ndevtxq);
+
+	if (dev_xmit_complete(rc))
+		return;
+
+	dev_kfree_skb_any(skb);
+	ndev->stats.tx_dropped++;
+}
+
+static int mana_xdp_xmit_fm(struct net_device *ndev, struct xdp_frame *frame,
+			    u16 q_idx)
+{
+	struct sk_buff *skb;
+
+	skb = xdp_build_skb_from_frame(frame, ndev);
+	if (unlikely(!skb))
+		return -ENOMEM;
+
+	skb_set_queue_mapping(skb, q_idx);
+
+	mana_xdp_tx(skb, ndev);
+
+	return 0;
+}
+
+int mana_xdp_xmit(struct net_device *ndev, int n, struct xdp_frame **frames,
+		  u32 flags)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	struct mana_stats_tx *tx_stats;
+	int i, count = 0;
+	u16 q_idx;
+
+	if (unlikely(!apc->port_is_up))
+		return 0;
+
+	q_idx = smp_processor_id() % ndev->real_num_tx_queues;
+
+	for (i = 0; i < n; i++) {
+		if (mana_xdp_xmit_fm(ndev, frames[i], q_idx))
+			break;
+
+		count++;
+	}
+
+	tx_stats = &apc->tx_qp[q_idx]->txq.stats;
+
+	u64_stats_update_begin(&tx_stats->syncp);
+	tx_stats->xdp_xmit += count;
+	u64_stats_update_end(&tx_stats->syncp);
+
+	return count;
+}
+
+u32 mana_run_xdp(struct net_device *ndev, struct mana_rxq *rxq,
+		 struct xdp_buff *xdp, void *buf_va, uint pkt_len)
+{
+	struct mana_stats_rx *rx_stats;
+	struct bpf_prog *prog;
+	u32 act = XDP_PASS;
+
+	rcu_read_lock();
+	prog = rcu_dereference(rxq->bpf_prog);
+
+	if (!prog)
+		goto out;
+
+	xdp_init_buff(xdp, PAGE_SIZE, &rxq->xdp_rxq);
+	xdp_prepare_buff(xdp, buf_va, XDP_PACKET_HEADROOM, pkt_len, true);
+
+	act = bpf_prog_run_xdp(prog, xdp);
+
+	rx_stats = &rxq->stats;
+
+	switch (act) {
+	case XDP_PASS:
+	case XDP_TX:
+	case XDP_DROP:
+		break;
+
+	case XDP_REDIRECT:
+		rxq->xdp_rc = xdp_do_redirect(ndev, xdp, prog);
+		if (!rxq->xdp_rc) {
+			rxq->xdp_flush = true;
+
+			u64_stats_update_begin(&rx_stats->syncp);
+			rx_stats->packets++;
+			rx_stats->bytes += pkt_len;
+			rx_stats->xdp_redirect++;
+			u64_stats_update_end(&rx_stats->syncp);
+
+			break;
+		}
+
+		fallthrough;
+
+	case XDP_ABORTED:
+		trace_xdp_exception(ndev, prog, act);
+		break;
+
+	default:
+		bpf_warn_invalid_xdp_action(ndev, prog, act);
+	}
+
+out:
+	rcu_read_unlock();
+
+	return act;
+}
+
+struct bpf_prog *mana_xdp_get(struct mana_port_context *apc)
+{
+	ASSERT_RTNL();
+
+	return apc->bpf_prog;
+}
+
+static struct bpf_prog *mana_chn_xdp_get(struct mana_port_context *apc)
+{
+	return rtnl_dereference(apc->rxqs[0]->bpf_prog);
+}
+
+/* Set xdp program on channels */
+void mana_chn_setxdp(struct mana_port_context *apc, struct bpf_prog *prog)
+{
+	struct bpf_prog *old_prog = mana_chn_xdp_get(apc);
+	unsigned int num_queues = apc->num_queues;
+	int i;
+
+	ASSERT_RTNL();
+
+	if (old_prog == prog)
+		return;
+
+	if (prog)
+		bpf_prog_add(prog, num_queues);
+
+	for (i = 0; i < num_queues; i++)
+		rcu_assign_pointer(apc->rxqs[i]->bpf_prog, prog);
+
+	if (old_prog)
+		for (i = 0; i < num_queues; i++)
+			bpf_prog_put(old_prog);
+}
+
+static int mana_xdp_set(struct net_device *ndev, struct bpf_prog *prog,
+			struct netlink_ext_ack *extack)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	struct bpf_prog *old_prog;
+	struct gdma_context *gc;
+	int err;
+
+	gc = apc->ac->gdma_dev->gdma_context;
+
+	old_prog = mana_xdp_get(apc);
+
+	if (!old_prog && !prog)
+		return 0;
+
+	if (prog && ndev->mtu > MANA_XDP_MTU_MAX) {
+		netdev_err(ndev, "XDP: mtu:%u too large, mtu_max:%lu\n",
+			   ndev->mtu, MANA_XDP_MTU_MAX);
+		NL_SET_ERR_MSG_MOD(extack, "XDP: mtu too large");
+
+		return -EOPNOTSUPP;
+	}
+
+	/* One refcnt of the prog is hold by the caller already, so
+	 * don't increase refcnt for this one.
+	 */
+	apc->bpf_prog = prog;
+
+	if (apc->port_is_up) {
+		/* Re-create rxq's after xdp prog was loaded or unloaded.
+		 * Ex: re create rxq's to switch from full pages to smaller
+		 * size page fragments when xdp prog is unloaded and
+		 * vice-versa.
+		 */
+
+		/* Pre-allocate buffers to prevent failure in mana_attach */
+		err = mana_pre_alloc_rxbufs(apc, ndev->mtu, apc->num_queues);
+		if (err) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "XDP: Insufficient memory for tx/rx re-config");
+			return err;
+		}
+
+		err = mana_detach(ndev, false);
+		if (err) {
+			netdev_err(ndev,
+				   "mana_detach failed at xdp set: %d\n", err);
+			NL_SET_ERR_MSG_MOD(extack,
+					   "XDP: Re-config failed at detach");
+			goto err_dealloc_rxbuffs;
+		}
+
+		err = mana_attach(ndev);
+		if (err) {
+			netdev_err(ndev,
+				   "mana_attach failed at xdp set: %d\n", err);
+			NL_SET_ERR_MSG_MOD(extack,
+					   "XDP: Re-config failed at attach");
+			goto err_dealloc_rxbuffs;
+		}
+
+		mana_chn_setxdp(apc, prog);
+		mana_pre_dealloc_rxbufs(apc);
+	}
+
+	if (old_prog)
+		bpf_prog_put(old_prog);
+
+	if (prog)
+		ndev->max_mtu = MANA_XDP_MTU_MAX;
+	else
+		ndev->max_mtu = gc->adapter_mtu - ETH_HLEN;
+
+	return 0;
+
+err_dealloc_rxbuffs:
+	apc->bpf_prog = old_prog;
+	mana_pre_dealloc_rxbufs(apc);
+	return err;
+}
+
+int mana_bpf(struct net_device *ndev, struct netdev_bpf *bpf)
+{
+	struct netlink_ext_ack *extack = bpf->extack;
+	int ret;
+
+	switch (bpf->command) {
+	case XDP_SETUP_PROG:
+		return mana_xdp_set(ndev, bpf->prog, extack);
+
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return ret;
+}
diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
new file mode 100644
index 000000000..87862b043
--- /dev/null
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -0,0 +1,4026 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright (c) 2021, Microsoft Corporation. */
+
+#include <uapi/linux/bpf.h>
+
+#include <linux/debugfs.h>
+#include <linux/inetdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/filter.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/export.h>
+#include <linux/skbuff.h>
+
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+#include <net/netdev_lock.h>
+#include <net/page_pool/helpers.h>
+#include <net/xdp.h>
+
+#include <net/mana/mana.h>
+#include <net/mana/mana_auxiliary.h>
+#include <net/mana/hw_channel.h>
+
+static DEFINE_IDA(mana_adev_ida);
+
+static int mana_adev_idx_alloc(void)
+{
+	return ida_alloc(&mana_adev_ida, GFP_KERNEL);
+}
+
+static void mana_adev_idx_free(int idx)
+{
+	ida_free(&mana_adev_ida, idx);
+}
+
+static ssize_t mana_dbg_q_read(struct file *filp, char __user *buf, size_t count,
+			       loff_t *pos)
+{
+	struct gdma_queue *gdma_q = filp->private_data;
+
+	return simple_read_from_buffer(buf, count, pos, gdma_q->queue_mem_ptr,
+				       gdma_q->queue_size);
+}
+
+static const struct file_operations mana_dbg_q_fops = {
+	.owner  = THIS_MODULE,
+	.open   = simple_open,
+	.read   = mana_dbg_q_read,
+};
+
+static bool mana_en_need_log(struct mana_port_context *apc, int err)
+{
+	if (apc && apc->ac && apc->ac->gdma_dev &&
+	    apc->ac->gdma_dev->gdma_context)
+		return mana_need_log(apc->ac->gdma_dev->gdma_context, err);
+	else
+		return true;
+}
+
+static void mana_put_rx_page(struct mana_rxq *rxq, struct page *page,
+			     bool from_pool)
+{
+	if (from_pool)
+		page_pool_put_full_page(rxq->page_pool, page, false);
+	else
+		put_page(page);
+}
+
+/* Microsoft Azure Network Adapter (MANA) functions */
+
+static int mana_open(struct net_device *ndev)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	int err;
+	err = mana_alloc_queues(ndev);
+
+	if (err) {
+		netdev_err(ndev, "%s failed to allocate queues: %d\n", __func__, err);
+		return err;
+	}
+
+	apc->port_is_up = true;
+
+	/* Ensure port state updated before txq state */
+	smp_wmb();
+
+	netif_tx_wake_all_queues(ndev);
+	netdev_dbg(ndev, "%s successful\n", __func__);
+	return 0;
+}
+
+static int mana_close(struct net_device *ndev)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+
+	if (!apc->port_is_up)
+		return 0;
+
+	return mana_detach(ndev, true);
+}
+
+static void mana_link_state_handle(struct work_struct *w)
+{
+	struct mana_context *ac;
+	struct net_device *ndev;
+	u32 link_event;
+	bool link_up;
+	int i;
+
+	ac = container_of(w, struct mana_context, link_change_work);
+
+	rtnl_lock();
+
+	link_event = READ_ONCE(ac->link_event);
+
+	if (link_event == HWC_DATA_HW_LINK_CONNECT)
+		link_up = true;
+	else if (link_event == HWC_DATA_HW_LINK_DISCONNECT)
+		link_up = false;
+	else
+		goto out;
+
+	/* Process all ports */
+	for (i = 0; i < ac->num_ports; i++) {
+		ndev = ac->ports[i];
+		if (!ndev)
+			continue;
+
+		if (link_up) {
+			netif_carrier_on(ndev);
+
+			__netdev_notify_peers(ndev);
+		} else {
+			netif_carrier_off(ndev);
+		}
+	}
+
+out:
+	rtnl_unlock();
+}
+
+static bool mana_can_tx(struct gdma_queue *wq)
+{
+	return mana_gd_wq_avail_space(wq) >= MAX_TX_WQE_SIZE;
+}
+
+static unsigned int mana_checksum_info(struct sk_buff *skb)
+{
+	if (skb->protocol == htons(ETH_P_IP)) {
+		struct iphdr *ip = ip_hdr(skb);
+
+		if (ip->protocol == IPPROTO_TCP)
+			return IPPROTO_TCP;
+
+		if (ip->protocol == IPPROTO_UDP)
+			return IPPROTO_UDP;
+	} else if (skb->protocol == htons(ETH_P_IPV6)) {
+		struct ipv6hdr *ip6 = ipv6_hdr(skb);
+
+		if (ip6->nexthdr == IPPROTO_TCP)
+			return IPPROTO_TCP;
+
+		if (ip6->nexthdr == IPPROTO_UDP)
+			return IPPROTO_UDP;
+	}
+
+	/* No csum offloading */
+	return 0;
+}
+
+static void mana_add_sge(struct mana_tx_package *tp, struct mana_skb_head *ash,
+			 int sg_i, dma_addr_t da, int sge_len, u32 gpa_mkey)
+{
+	ash->dma_handle[sg_i] = da;
+	ash->size[sg_i] = sge_len;
+
+	tp->wqe_req.sgl[sg_i].address = da;
+	tp->wqe_req.sgl[sg_i].mem_key = gpa_mkey;
+	tp->wqe_req.sgl[sg_i].size = sge_len;
+}
+
+static int mana_map_skb(struct sk_buff *skb, struct mana_port_context *apc,
+			struct mana_tx_package *tp, int gso_hs)
+{
+	struct mana_skb_head *ash = (struct mana_skb_head *)skb->head;
+	int hsg = 1; /* num of SGEs of linear part */
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+	int skb_hlen = skb_headlen(skb);
+	int sge0_len, sge1_len = 0;
+	struct gdma_context *gc;
+	struct device *dev;
+	skb_frag_t *frag;
+	dma_addr_t da;
+	int sg_i;
+	int i;
+
+	gc = gd->gdma_context;
+	dev = gc->dev;
+
+	if (gso_hs && gso_hs < skb_hlen) {
+		sge0_len = gso_hs;
+		sge1_len = skb_hlen - gso_hs;
+	} else {
+		sge0_len = skb_hlen;
+	}
+
+	da = dma_map_single(dev, skb->data, sge0_len, DMA_TO_DEVICE);
+	if (dma_mapping_error(dev, da))
+		return -ENOMEM;
+
+	mana_add_sge(tp, ash, 0, da, sge0_len, gd->gpa_mkey);
+
+	if (sge1_len) {
+		sg_i = 1;
+		da = dma_map_single(dev, skb->data + sge0_len, sge1_len,
+				    DMA_TO_DEVICE);
+		if (dma_mapping_error(dev, da))
+			goto frag_err;
+
+		mana_add_sge(tp, ash, sg_i, da, sge1_len, gd->gpa_mkey);
+		hsg = 2;
+	}
+
+	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+		sg_i = hsg + i;
+
+		frag = &skb_shinfo(skb)->frags[i];
+		da = skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag),
+				      DMA_TO_DEVICE);
+		if (dma_mapping_error(dev, da))
+			goto frag_err;
+
+		mana_add_sge(tp, ash, sg_i, da, skb_frag_size(frag),
+			     gd->gpa_mkey);
+	}
+
+	return 0;
+
+frag_err:
+	if (net_ratelimit())
+		netdev_err(apc->ndev, "Failed to map skb of size %u to DMA\n",
+			   skb->len);
+	for (i = sg_i - 1; i >= hsg; i--)
+		dma_unmap_page(dev, ash->dma_handle[i], ash->size[i],
+			       DMA_TO_DEVICE);
+
+	for (i = hsg - 1; i >= 0; i--)
+		dma_unmap_single(dev, ash->dma_handle[i], ash->size[i],
+				 DMA_TO_DEVICE);
+
+	return -ENOMEM;
+}
+
+/* Handle the case when GSO SKB linear length is too large.
+ * MANA NIC requires GSO packets to put only the packet header to SGE0.
+ * So, we need 2 SGEs for the skb linear part which contains more than the
+ * header.
+ * Return a positive value for the number of SGEs, or a negative value
+ * for an error.
+ */
+static int mana_fix_skb_head(struct net_device *ndev, struct sk_buff *skb,
+			     int gso_hs)
+{
+	int num_sge = 1 + skb_shinfo(skb)->nr_frags;
+	int skb_hlen = skb_headlen(skb);
+
+	if (gso_hs < skb_hlen) {
+		num_sge++;
+	} else if (gso_hs > skb_hlen) {
+		if (net_ratelimit())
+			netdev_err(ndev,
+				   "TX nonlinear head: hs:%d, skb_hlen:%d\n",
+				   gso_hs, skb_hlen);
+
+		return -EINVAL;
+	}
+
+	return num_sge;
+}
+
+/* Get the GSO packet's header size */
+static int mana_get_gso_hs(struct sk_buff *skb)
+{
+	int gso_hs;
+
+	if (skb->encapsulation) {
+		gso_hs = skb_inner_tcp_all_headers(skb);
+	} else {
+		if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+			gso_hs = skb_transport_offset(skb) +
+				 sizeof(struct udphdr);
+		} else {
+			gso_hs = skb_tcp_all_headers(skb);
+		}
+	}
+
+	return gso_hs;
+}
+
+static void mana_per_port_queue_reset_work_handler(struct work_struct *work)
+{
+	struct mana_port_context *apc = container_of(work,
+						     struct mana_port_context,
+						     queue_reset_work);
+	struct net_device *ndev = apc->ndev;
+	int err;
+
+	rtnl_lock();
+
+	/* Block RDMA from grabbing the vport during the detach/attach
+	 * window, same as mana_set_channels().
+	 */
+	mutex_lock(&apc->vport_mutex);
+	apc->channel_changing = true;
+	mutex_unlock(&apc->vport_mutex);
+
+	/* Pre-allocate buffers to prevent failure in mana_attach later */
+	err = mana_pre_alloc_rxbufs(apc, ndev->mtu, apc->num_queues);
+	if (err) {
+		netdev_err(ndev, "Insufficient memory for reset post tx stall detection\n");
+		goto clear_flag;
+	}
+
+	err = mana_detach(ndev, false);
+	if (err) {
+		netdev_err(ndev, "mana_detach failed: %d\n", err);
+		goto dealloc_pre_rxbufs;
+	}
+
+	err = mana_attach(ndev);
+	if (err)
+		netdev_err(ndev, "mana_attach failed: %d\n", err);
+
+dealloc_pre_rxbufs:
+	mana_pre_dealloc_rxbufs(apc);
+clear_flag:
+	mutex_lock(&apc->vport_mutex);
+	apc->channel_changing = false;
+	mutex_unlock(&apc->vport_mutex);
+
+	rtnl_unlock();
+}
+
+netdev_tx_t mana_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+{
+	enum mana_tx_pkt_format pkt_fmt = MANA_SHORT_PKT_FMT;
+	struct mana_port_context *apc = netdev_priv(ndev);
+	int gso_hs = 0; /* zero for non-GSO pkts */
+	u16 txq_idx = skb_get_queue_mapping(skb);
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+	bool ipv4 = false, ipv6 = false;
+	struct mana_tx_package pkg = {};
+	struct netdev_queue *net_txq;
+	struct mana_stats_tx *tx_stats;
+	struct gdma_queue *gdma_sq;
+	int err, len, num_gso_seg;
+	unsigned int csum_type;
+	struct mana_txq *txq;
+	struct mana_cq *cq;
+
+	if (unlikely(!apc->port_is_up))
+		goto tx_drop;
+
+	if (skb_cow_head(skb, MANA_HEADROOM))
+		goto tx_drop_count;
+
+	txq = &apc->tx_qp[txq_idx]->txq;
+	gdma_sq = txq->gdma_sq;
+	cq = &apc->tx_qp[txq_idx]->tx_cq;
+	tx_stats = &txq->stats;
+
+	BUILD_BUG_ON(MAX_TX_WQE_SGL_ENTRIES != MANA_MAX_TX_WQE_SGL_ENTRIES);
+	if (MAX_SKB_FRAGS + 2 > MAX_TX_WQE_SGL_ENTRIES &&
+	    skb_shinfo(skb)->nr_frags + 2 > MAX_TX_WQE_SGL_ENTRIES) {
+		/* GSO skb with Hardware SGE limit exceeded is not expected here
+		 * as they are handled in mana_features_check() callback
+		 */
+		if (skb_linearize(skb)) {
+			netdev_warn_once(ndev, "Failed to linearize skb with nr_frags=%d and is_gso=%d\n",
+					 skb_shinfo(skb)->nr_frags,
+					 skb_is_gso(skb));
+			goto tx_drop_count;
+		}
+		apc->eth_stats.tx_linear_pkt_cnt++;
+	}
+
+	pkg.tx_oob.s_oob.vcq_num = cq->gdma_id;
+	pkg.tx_oob.s_oob.vsq_frame = txq->vsq_frame;
+
+	if (txq->vp_offset > MANA_SHORT_VPORT_OFFSET_MAX) {
+		pkg.tx_oob.l_oob.long_vp_offset = txq->vp_offset;
+		pkt_fmt = MANA_LONG_PKT_FMT;
+	} else {
+		pkg.tx_oob.s_oob.short_vp_offset = txq->vp_offset;
+	}
+
+	if (skb_vlan_tag_present(skb)) {
+		pkt_fmt = MANA_LONG_PKT_FMT;
+		pkg.tx_oob.l_oob.inject_vlan_pri_tag = 1;
+		pkg.tx_oob.l_oob.pcp = skb_vlan_tag_get_prio(skb);
+		pkg.tx_oob.l_oob.dei = skb_vlan_tag_get_cfi(skb);
+		pkg.tx_oob.l_oob.vlan_id = skb_vlan_tag_get_id(skb);
+	}
+
+	pkg.tx_oob.s_oob.pkt_fmt = pkt_fmt;
+
+	if (pkt_fmt == MANA_SHORT_PKT_FMT) {
+		pkg.wqe_req.inline_oob_size = sizeof(struct mana_tx_short_oob);
+		u64_stats_update_begin(&tx_stats->syncp);
+		tx_stats->short_pkt_fmt++;
+		u64_stats_update_end(&tx_stats->syncp);
+	} else {
+		pkg.wqe_req.inline_oob_size = sizeof(struct mana_tx_oob);
+		u64_stats_update_begin(&tx_stats->syncp);
+		tx_stats->long_pkt_fmt++;
+		u64_stats_update_end(&tx_stats->syncp);
+	}
+
+	pkg.wqe_req.inline_oob_data = &pkg.tx_oob;
+	pkg.wqe_req.flags = 0;
+	pkg.wqe_req.client_data_unit = 0;
+
+	pkg.wqe_req.num_sge = 1 + skb_shinfo(skb)->nr_frags;
+
+	if (skb->protocol == htons(ETH_P_IP))
+		ipv4 = true;
+	else if (skb->protocol == htons(ETH_P_IPV6))
+		ipv6 = true;
+
+	if (skb_is_gso(skb)) {
+		int num_sge;
+
+		gso_hs = mana_get_gso_hs(skb);
+
+		num_sge = mana_fix_skb_head(ndev, skb, gso_hs);
+		if (num_sge > 0)
+			pkg.wqe_req.num_sge = num_sge;
+		else
+			goto tx_drop_count;
+
+		u64_stats_update_begin(&tx_stats->syncp);
+		if (skb->encapsulation) {
+			tx_stats->tso_inner_packets++;
+			tx_stats->tso_inner_bytes += skb->len - gso_hs;
+		} else {
+			tx_stats->tso_packets++;
+			tx_stats->tso_bytes += skb->len - gso_hs;
+		}
+		u64_stats_update_end(&tx_stats->syncp);
+
+		pkg.tx_oob.s_oob.is_outer_ipv4 = ipv4;
+		pkg.tx_oob.s_oob.is_outer_ipv6 = ipv6;
+
+		pkg.tx_oob.s_oob.comp_iphdr_csum = 1;
+		pkg.tx_oob.s_oob.comp_tcp_csum = 1;
+		pkg.tx_oob.s_oob.trans_off = skb_transport_offset(skb);
+
+		pkg.wqe_req.client_data_unit = skb_shinfo(skb)->gso_size;
+		pkg.wqe_req.flags = GDMA_WR_OOB_IN_SGL | GDMA_WR_PAD_BY_SGE0;
+		if (ipv4) {
+			ip_hdr(skb)->tot_len = 0;
+			ip_hdr(skb)->check = 0;
+			tcp_hdr(skb)->check =
+				~csum_tcpudp_magic(ip_hdr(skb)->saddr,
+						   ip_hdr(skb)->daddr, 0,
+						   IPPROTO_TCP, 0);
+		} else {
+			ipv6_hdr(skb)->payload_len = 0;
+			tcp_hdr(skb)->check =
+				~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+						 &ipv6_hdr(skb)->daddr, 0,
+						 IPPROTO_TCP, 0);
+		}
+	} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		csum_type = mana_checksum_info(skb);
+
+		u64_stats_update_begin(&tx_stats->syncp);
+		tx_stats->csum_partial++;
+		u64_stats_update_end(&tx_stats->syncp);
+
+		if (csum_type == IPPROTO_TCP) {
+			pkg.tx_oob.s_oob.is_outer_ipv4 = ipv4;
+			pkg.tx_oob.s_oob.is_outer_ipv6 = ipv6;
+
+			pkg.tx_oob.s_oob.comp_tcp_csum = 1;
+			pkg.tx_oob.s_oob.trans_off = skb_transport_offset(skb);
+
+		} else if (csum_type == IPPROTO_UDP) {
+			pkg.tx_oob.s_oob.is_outer_ipv4 = ipv4;
+			pkg.tx_oob.s_oob.is_outer_ipv6 = ipv6;
+
+			pkg.tx_oob.s_oob.comp_udp_csum = 1;
+		} else {
+			/* Can't do offload of this type of checksum */
+			if (skb_checksum_help(skb))
+				goto tx_drop_count;
+		}
+	}
+
+	if (pkg.wqe_req.num_sge <= ARRAY_SIZE(pkg.sgl_array)) {
+		pkg.wqe_req.sgl = pkg.sgl_array;
+	} else {
+		pkg.sgl_ptr = kmalloc_objs(struct gdma_sge, pkg.wqe_req.num_sge,
+					   GFP_ATOMIC);
+		if (!pkg.sgl_ptr)
+			goto tx_drop_count;
+
+		pkg.wqe_req.sgl = pkg.sgl_ptr;
+	}
+
+	if (mana_map_skb(skb, apc, &pkg, gso_hs)) {
+		u64_stats_update_begin(&tx_stats->syncp);
+		tx_stats->mana_map_err++;
+		u64_stats_update_end(&tx_stats->syncp);
+		goto free_sgl_ptr;
+	}
+
+	skb_queue_tail(&txq->pending_skbs, skb);
+
+	len = skb->len;
+	num_gso_seg = skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
+	net_txq = netdev_get_tx_queue(ndev, txq_idx);
+
+	err = mana_gd_post_work_request(gdma_sq, &pkg.wqe_req,
+					(struct gdma_posted_wqe_info *)skb->cb);
+	if (!mana_can_tx(gdma_sq)) {
+		netif_tx_stop_queue(net_txq);
+		apc->eth_stats.stop_queue++;
+	}
+
+	if (err) {
+		(void)skb_dequeue_tail(&txq->pending_skbs);
+		mana_unmap_skb(skb, apc);
+		netdev_warn(ndev, "Failed to post TX OOB: %d\n", err);
+		goto free_sgl_ptr;
+	}
+
+	err = NETDEV_TX_OK;
+	atomic_inc(&txq->pending_sends);
+
+	mana_gd_wq_ring_doorbell(gd->gdma_context, gdma_sq);
+
+	/* skb may be freed after mana_gd_post_work_request. Do not use it. */
+	skb = NULL;
+
+	/* Populated the packet and bytes counters based on post GSO packet
+	 * calculations
+	 */
+	tx_stats = &txq->stats;
+	u64_stats_update_begin(&tx_stats->syncp);
+	tx_stats->packets += num_gso_seg;
+	tx_stats->bytes += len + ((num_gso_seg - 1) * gso_hs);
+	u64_stats_update_end(&tx_stats->syncp);
+
+	if (netif_tx_queue_stopped(net_txq) && mana_can_tx(gdma_sq)) {
+		netif_tx_wake_queue(net_txq);
+		apc->eth_stats.wake_queue++;
+	}
+
+	kfree(pkg.sgl_ptr);
+	return err;
+
+free_sgl_ptr:
+	kfree(pkg.sgl_ptr);
+tx_drop_count:
+	ndev->stats.tx_dropped++;
+tx_drop:
+	dev_kfree_skb_any(skb);
+	return NETDEV_TX_OK;
+}
+
+#if (MAX_SKB_FRAGS + 2 > MANA_MAX_TX_WQE_SGL_ENTRIES)
+static netdev_features_t mana_features_check(struct sk_buff *skb,
+					     struct net_device *ndev,
+					     netdev_features_t features)
+{
+	if (skb_shinfo(skb)->nr_frags + 2 > MAX_TX_WQE_SGL_ENTRIES) {
+		/* Exceeds HW SGE limit.
+		 * GSO case:
+		 *   Disable GSO so the stack will software-segment the skb
+		 *   into smaller skbs that fit the SGE budget.
+		 * Non-GSO case:
+		 *   The xmit path will attempt skb_linearize() as a fallback.
+		 */
+		features &= ~NETIF_F_GSO_MASK;
+	}
+	return features;
+}
+#endif
+
+static void mana_get_stats64(struct net_device *ndev,
+			     struct rtnl_link_stats64 *st)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	unsigned int num_queues = apc->num_queues;
+	struct mana_stats_rx *rx_stats;
+	struct mana_stats_tx *tx_stats;
+	unsigned int start;
+	u64 packets, bytes;
+	int q;
+
+	if (!apc->port_is_up)
+		return;
+
+	netdev_stats_to_stats64(st, &ndev->stats);
+
+	if (apc->ac->hwc_timeout_occurred)
+		netdev_warn_once(ndev, "HWC timeout occurred\n");
+
+	st->rx_missed_errors = apc->ac->hc_stats.hc_rx_discards_no_wqe;
+
+	for (q = 0; q < num_queues; q++) {
+		rx_stats = &apc->rxqs[q]->stats;
+
+		do {
+			start = u64_stats_fetch_begin(&rx_stats->syncp);
+			packets = rx_stats->packets;
+			bytes = rx_stats->bytes;
+		} while (u64_stats_fetch_retry(&rx_stats->syncp, start));
+
+		st->rx_packets += packets;
+		st->rx_bytes += bytes;
+	}
+
+	for (q = 0; q < num_queues; q++) {
+		tx_stats = &apc->tx_qp[q]->txq.stats;
+
+		do {
+			start = u64_stats_fetch_begin(&tx_stats->syncp);
+			packets = tx_stats->packets;
+			bytes = tx_stats->bytes;
+		} while (u64_stats_fetch_retry(&tx_stats->syncp, start));
+
+		st->tx_packets += packets;
+		st->tx_bytes += bytes;
+	}
+}
+
+static int mana_get_tx_queue(struct net_device *ndev, struct sk_buff *skb,
+			     int old_q)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	u32 hash = skb_get_hash(skb);
+	struct sock *sk = skb->sk;
+	int txq;
+
+	txq = apc->indir_table[hash & (apc->indir_table_sz - 1)];
+
+	if (txq != old_q && sk && sk_fullsock(sk) &&
+	    rcu_access_pointer(sk->sk_dst_cache))
+		sk_tx_queue_set(sk, txq);
+
+	return txq;
+}
+
+static u16 mana_select_queue(struct net_device *ndev, struct sk_buff *skb,
+			     struct net_device *sb_dev)
+{
+	int txq;
+
+	if (ndev->real_num_tx_queues == 1)
+		return 0;
+
+	txq = sk_tx_queue_get(skb->sk);
+
+	if (txq < 0 || skb->ooo_okay || txq >= ndev->real_num_tx_queues) {
+		if (skb_rx_queue_recorded(skb))
+			txq = skb_get_rx_queue(skb);
+		else
+			txq = mana_get_tx_queue(ndev, skb, txq);
+	}
+
+	return txq;
+}
+
+/* Release pre-allocated RX buffers */
+void mana_pre_dealloc_rxbufs(struct mana_port_context *mpc)
+{
+	struct device *dev;
+	int i;
+
+	dev = mpc->ac->gdma_dev->gdma_context->dev;
+
+	if (!mpc->rxbufs_pre)
+		goto out1;
+
+	if (!mpc->das_pre)
+		goto out2;
+
+	while (mpc->rxbpre_total) {
+		i = --mpc->rxbpre_total;
+		dma_unmap_single(dev, mpc->das_pre[i], mpc->rxbpre_datasize,
+				 DMA_FROM_DEVICE);
+		put_page(virt_to_head_page(mpc->rxbufs_pre[i]));
+	}
+
+	kvfree(mpc->das_pre);
+	mpc->das_pre = NULL;
+
+out2:
+	kvfree(mpc->rxbufs_pre);
+	mpc->rxbufs_pre = NULL;
+
+out1:
+	mpc->rxbpre_datasize = 0;
+	mpc->rxbpre_alloc_size = 0;
+	mpc->rxbpre_headroom = 0;
+}
+
+/* Get a buffer from the pre-allocated RX buffers */
+static void *mana_get_rxbuf_pre(struct mana_rxq *rxq, dma_addr_t *da)
+{
+	struct net_device *ndev = rxq->ndev;
+	struct mana_port_context *mpc;
+	void *va;
+
+	mpc = netdev_priv(ndev);
+
+	if (!mpc->rxbufs_pre || !mpc->das_pre || !mpc->rxbpre_total) {
+		netdev_err(ndev, "No RX pre-allocated bufs\n");
+		return NULL;
+	}
+
+	/* Check sizes to catch unexpected coding error */
+	if (mpc->rxbpre_datasize != rxq->datasize) {
+		netdev_err(ndev, "rxbpre_datasize mismatch: %u: %u\n",
+			   mpc->rxbpre_datasize, rxq->datasize);
+		return NULL;
+	}
+
+	if (mpc->rxbpre_alloc_size != rxq->alloc_size) {
+		netdev_err(ndev, "rxbpre_alloc_size mismatch: %u: %u\n",
+			   mpc->rxbpre_alloc_size, rxq->alloc_size);
+		return NULL;
+	}
+
+	if (mpc->rxbpre_headroom != rxq->headroom) {
+		netdev_err(ndev, "rxbpre_headroom mismatch: %u: %u\n",
+			   mpc->rxbpre_headroom, rxq->headroom);
+		return NULL;
+	}
+
+	mpc->rxbpre_total--;
+
+	*da = mpc->das_pre[mpc->rxbpre_total];
+	va = mpc->rxbufs_pre[mpc->rxbpre_total];
+	mpc->rxbufs_pre[mpc->rxbpre_total] = NULL;
+
+	/* Deallocate the array after all buffers are gone */
+	if (!mpc->rxbpre_total)
+		mana_pre_dealloc_rxbufs(mpc);
+
+	return va;
+}
+
+/* Get RX buffer's data size, alloc size, XDP headroom based on MTU */
+static void mana_get_rxbuf_cfg(struct mana_port_context *apc,
+			       int mtu, u32 *datasize, u32 *alloc_size,
+			       u32 *headroom, u32 *frag_count)
+{
+	u32 len, buf_size;
+
+	/* Calculate datasize first (consistent across all cases) */
+	*datasize = mtu + ETH_HLEN;
+
+	/* For xdp and jumbo frames make sure only one packet fits per page */
+	if (mtu + MANA_RXBUF_PAD > PAGE_SIZE / 2 || mana_xdp_get(apc)) {
+		if (mana_xdp_get(apc)) {
+			*headroom = XDP_PACKET_HEADROOM;
+			*alloc_size = PAGE_SIZE;
+		} else {
+			*headroom = 0; /* no support for XDP */
+			*alloc_size = SKB_DATA_ALIGN(mtu + MANA_RXBUF_PAD +
+						     *headroom);
+		}
+
+		*frag_count = 1;
+
+		/* In the single-buffer path, napi_build_skb() must see the
+		 * actual backing allocation size so skb->truesize reflects
+		 * the full page (or higher-order page), not just the usable
+		 * packet area.
+		 */
+		*alloc_size = PAGE_SIZE << get_order(*alloc_size);
+		return;
+	}
+
+	/* Standard MTU case - optimize for multiple packets per page */
+	*headroom = 0;
+
+	/* Calculate base buffer size needed */
+	len = SKB_DATA_ALIGN(mtu + MANA_RXBUF_PAD + *headroom);
+	buf_size = ALIGN(len, MANA_RX_FRAG_ALIGNMENT);
+
+	/* Calculate how many packets can fit in a page */
+	*frag_count = PAGE_SIZE / buf_size;
+	*alloc_size = buf_size;
+}
+
+int mana_pre_alloc_rxbufs(struct mana_port_context *mpc, int new_mtu, int num_queues)
+{
+	struct device *dev;
+	struct page *page;
+	dma_addr_t da;
+	int num_rxb;
+	void *va;
+	int i;
+
+	mana_get_rxbuf_cfg(mpc, new_mtu, &mpc->rxbpre_datasize,
+			   &mpc->rxbpre_alloc_size, &mpc->rxbpre_headroom,
+			   &mpc->rxbpre_frag_count);
+
+	dev = mpc->ac->gdma_dev->gdma_context->dev;
+
+	num_rxb = num_queues * mpc->rx_queue_size;
+
+	WARN(mpc->rxbufs_pre, "mana rxbufs_pre exists\n");
+	mpc->rxbufs_pre = kvmalloc_array(num_rxb, sizeof(void *), GFP_KERNEL);
+	if (!mpc->rxbufs_pre)
+		goto error;
+
+	mpc->das_pre = kvmalloc_objs(dma_addr_t, num_rxb);
+	if (!mpc->das_pre)
+		goto error;
+
+	mpc->rxbpre_total = 0;
+
+	for (i = 0; i < num_rxb; i++) {
+		page = dev_alloc_pages(get_order(mpc->rxbpre_alloc_size));
+		if (!page)
+			goto error;
+
+		va = page_to_virt(page);
+
+		da = dma_map_single(dev, va + mpc->rxbpre_headroom,
+				    mpc->rxbpre_datasize, DMA_FROM_DEVICE);
+		if (dma_mapping_error(dev, da)) {
+			put_page(page);
+			goto error;
+		}
+
+		mpc->rxbufs_pre[i] = va;
+		mpc->das_pre[i] = da;
+		mpc->rxbpre_total = i + 1;
+	}
+
+	return 0;
+
+error:
+	netdev_err(mpc->ndev, "Failed to pre-allocate RX buffers for %d queues\n", num_queues);
+	mana_pre_dealloc_rxbufs(mpc);
+	return -ENOMEM;
+}
+
+static int mana_change_mtu(struct net_device *ndev, int new_mtu)
+{
+	struct mana_port_context *mpc = netdev_priv(ndev);
+	unsigned int old_mtu = ndev->mtu;
+	int err;
+
+	/* Pre-allocate buffers to prevent failure in mana_attach later */
+	err = mana_pre_alloc_rxbufs(mpc, new_mtu, mpc->num_queues);
+	if (err) {
+		netdev_err(ndev, "Insufficient memory for new MTU\n");
+		return err;
+	}
+
+	err = mana_detach(ndev, false);
+	if (err) {
+		netdev_err(ndev, "mana_detach failed: %d\n", err);
+		goto out;
+	}
+
+	WRITE_ONCE(ndev->mtu, new_mtu);
+
+	err = mana_attach(ndev);
+	if (err) {
+		netdev_err(ndev, "mana_attach failed: %d\n", err);
+		WRITE_ONCE(ndev->mtu, old_mtu);
+	}
+
+out:
+	mana_pre_dealloc_rxbufs(mpc);
+	return err;
+}
+
+static void mana_tx_timeout(struct net_device *netdev, unsigned int txqueue)
+{
+	struct mana_port_context *apc = netdev_priv(netdev);
+	struct mana_context *ac = apc->ac;
+	struct gdma_context *gc = ac->gdma_dev->gdma_context;
+
+	/* Already in service, hence tx queue reset is not required.*/
+	if (test_bit(GC_IN_SERVICE, &gc->flags))
+		return;
+
+	/* Note: If there are pending queue reset work for this port(apc),
+	 * subsequent request queued up from here are ignored. This is because
+	 * we are using the same work instance per port(apc).
+	 */
+	queue_work(ac->per_port_queue_reset_wq, &apc->queue_reset_work);
+}
+
+static int mana_shaper_set(struct net_shaper_binding *binding,
+			   const struct net_shaper *shaper,
+			   struct netlink_ext_ack *extack)
+{
+	struct mana_port_context *apc = netdev_priv(binding->netdev);
+	u32 old_speed, rate;
+	int err;
+
+	if (shaper->handle.scope != NET_SHAPER_SCOPE_NETDEV) {
+		NL_SET_ERR_MSG_MOD(extack, "net shaper scope should be netdev");
+		return -EINVAL;
+	}
+
+	if (apc->handle.id && shaper->handle.id != apc->handle.id) {
+		NL_SET_ERR_MSG_MOD(extack, "Cannot create multiple shapers");
+		return -EOPNOTSUPP;
+	}
+
+	if (!shaper->bw_max || (shaper->bw_max % 100000000)) {
+		NL_SET_ERR_MSG_MOD(extack, "Please use multiples of 100Mbps for bandwidth");
+		return -EINVAL;
+	}
+
+	rate = div_u64(shaper->bw_max, 1000); /* Convert bps to Kbps */
+	rate = div_u64(rate, 1000);	      /* Convert Kbps to Mbps */
+
+	/* Get current speed */
+	err = mana_query_link_cfg(apc);
+	old_speed = (err) ? SPEED_UNKNOWN : apc->speed;
+
+	if (!err) {
+		err = mana_set_bw_clamp(apc, rate, TRI_STATE_TRUE);
+		apc->speed = (err) ? old_speed : rate;
+		apc->handle = (err) ? apc->handle : shaper->handle;
+	}
+
+	return err;
+}
+
+static int mana_shaper_del(struct net_shaper_binding *binding,
+			   const struct net_shaper_handle *handle,
+			   struct netlink_ext_ack *extack)
+{
+	struct mana_port_context *apc = netdev_priv(binding->netdev);
+	int err;
+
+	err = mana_set_bw_clamp(apc, 0, TRI_STATE_FALSE);
+
+	if (!err) {
+		/* Reset mana port context parameters */
+		apc->handle.id = 0;
+		apc->handle.scope = NET_SHAPER_SCOPE_UNSPEC;
+		apc->speed = apc->max_speed;
+	}
+
+	return err;
+}
+
+static void mana_shaper_cap(struct net_shaper_binding *binding,
+			    enum net_shaper_scope scope,
+			    unsigned long *flags)
+{
+	*flags = BIT(NET_SHAPER_A_CAPS_SUPPORT_BW_MAX) |
+		 BIT(NET_SHAPER_A_CAPS_SUPPORT_METRIC_BPS);
+}
+
+static const struct net_shaper_ops mana_shaper_ops = {
+	.set = mana_shaper_set,
+	.delete = mana_shaper_del,
+	.capabilities = mana_shaper_cap,
+};
+
+static const struct net_device_ops mana_devops = {
+	.ndo_open		= mana_open,
+	.ndo_stop		= mana_close,
+	.ndo_select_queue	= mana_select_queue,
+#if (MAX_SKB_FRAGS + 2 > MANA_MAX_TX_WQE_SGL_ENTRIES)
+	.ndo_features_check	= mana_features_check,
+#endif
+	.ndo_start_xmit		= mana_start_xmit,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_get_stats64	= mana_get_stats64,
+	.ndo_bpf		= mana_bpf,
+	.ndo_xdp_xmit		= mana_xdp_xmit,
+	.ndo_change_mtu		= mana_change_mtu,
+	.ndo_tx_timeout		= mana_tx_timeout,
+	.net_shaper_ops         = &mana_shaper_ops,
+};
+
+static void mana_cleanup_port_context(struct mana_port_context *apc)
+{
+	/*
+	 * make sure subsequent cleanup attempts don't end up removing already
+	 * cleaned dentry pointer
+	 */
+	debugfs_remove(apc->mana_port_debugfs);
+	apc->mana_port_debugfs = NULL;
+	kfree(apc->rxqs);
+	apc->rxqs = NULL;
+}
+
+static void mana_cleanup_indir_table(struct mana_port_context *apc)
+{
+	apc->indir_table_sz = 0;
+	kfree(apc->indir_table);
+	kfree(apc->rxobj_table);
+}
+
+static int mana_init_port_context(struct mana_port_context *apc)
+{
+	apc->rxqs = kzalloc_objs(struct mana_rxq *, apc->num_queues);
+
+	return !apc->rxqs ? -ENOMEM : 0;
+}
+
+static int gdma_mana_send_request(struct gdma_context *gc, void *in_buf,
+				  u32 in_len, void *out_buf, u32 out_len)
+{
+	struct gdma_resp_hdr *resp = out_buf;
+	struct gdma_req_hdr *req = in_buf;
+	struct device *dev = gc->dev;
+	static atomic_t activity_id;
+	int err;
+
+	req->dev_id = gc->mana.dev_id;
+	req->activity_id = atomic_inc_return(&activity_id);
+
+	err = mana_gd_send_request(gc, in_len, in_buf, out_len,
+				   out_buf);
+	if (err || resp->status) {
+		if (err == -EOPNOTSUPP)
+			return err;
+
+		if (req->req.msg_type != MANA_QUERY_PHY_STAT &&
+		    mana_need_log(gc, err))
+			dev_err(dev, "Command 0x%x failed with status: 0x%x, err: %d\n",
+				req->req.msg_type, resp->status, err);
+		return err ? err : -EPROTO;
+	}
+
+	if (req->dev_id.as_uint32 != resp->dev_id.as_uint32 ||
+	    req->activity_id != resp->activity_id) {
+		dev_err(dev, "Unexpected mana message response: %x,%x,%x,%x\n",
+			req->dev_id.as_uint32, resp->dev_id.as_uint32,
+			req->activity_id, resp->activity_id);
+		return -EPROTO;
+	}
+
+	return 0;
+}
+
+static int mana_send_request(struct mana_context *ac, void *in_buf,
+			     u32 in_len, void *out_buf, u32 out_len)
+{
+	struct gdma_context *gc = ac->gdma_dev->gdma_context;
+
+	return gdma_mana_send_request(gc, in_buf, in_len, out_buf, out_len);
+}
+
+static int mana_verify_resp_hdr(const struct gdma_resp_hdr *resp_hdr,
+				const enum mana_command_code expected_code,
+				const u32 min_size)
+{
+	if (resp_hdr->response.msg_type != expected_code)
+		return -EPROTO;
+
+	if (resp_hdr->response.msg_version < GDMA_MESSAGE_V1)
+		return -EPROTO;
+
+	if (resp_hdr->response.msg_size < min_size)
+		return -EPROTO;
+
+	return 0;
+}
+
+static int mana_pf_register_hw_vport(struct mana_port_context *apc)
+{
+	struct mana_register_hw_vport_resp resp = {};
+	struct mana_register_hw_vport_req req = {};
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_REGISTER_HW_PORT,
+			     sizeof(req), sizeof(resp));
+	req.attached_gfid = 1;
+	req.is_pf_default_vport = 1;
+	req.allow_all_ether_types = 1;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err) {
+		netdev_err(apc->ndev, "Failed to register hw vPort: %d\n", err);
+		return err;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_REGISTER_HW_PORT,
+				   sizeof(resp));
+	if (err || resp.hdr.status) {
+		netdev_err(apc->ndev, "Failed to register hw vPort: %d, 0x%x\n",
+			   err, resp.hdr.status);
+		return err ? err : -EPROTO;
+	}
+
+	apc->port_handle = resp.hw_vport_handle;
+	return 0;
+}
+
+static void mana_pf_deregister_hw_vport(struct mana_port_context *apc)
+{
+	struct mana_deregister_hw_vport_resp resp = {};
+	struct mana_deregister_hw_vport_req req = {};
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_DEREGISTER_HW_PORT,
+			     sizeof(req), sizeof(resp));
+	req.hw_vport_handle = apc->port_handle;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err) {
+		if (mana_en_need_log(apc, err))
+			netdev_err(apc->ndev, "Failed to unregister hw vPort: %d\n",
+				   err);
+
+		return;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_DEREGISTER_HW_PORT,
+				   sizeof(resp));
+	if (err || resp.hdr.status)
+		netdev_err(apc->ndev,
+			   "Failed to deregister hw vPort: %d, 0x%x\n",
+			   err, resp.hdr.status);
+}
+
+static int mana_pf_register_filter(struct mana_port_context *apc)
+{
+	struct mana_register_filter_resp resp = {};
+	struct mana_register_filter_req req = {};
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_REGISTER_FILTER,
+			     sizeof(req), sizeof(resp));
+	req.vport = apc->port_handle;
+	memcpy(req.mac_addr, apc->mac_addr, ETH_ALEN);
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err) {
+		netdev_err(apc->ndev, "Failed to register filter: %d\n", err);
+		return err;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_REGISTER_FILTER,
+				   sizeof(resp));
+	if (err || resp.hdr.status) {
+		netdev_err(apc->ndev, "Failed to register filter: %d, 0x%x\n",
+			   err, resp.hdr.status);
+		return err ? err : -EPROTO;
+	}
+
+	apc->pf_filter_handle = resp.filter_handle;
+	return 0;
+}
+
+static void mana_pf_deregister_filter(struct mana_port_context *apc)
+{
+	struct mana_deregister_filter_resp resp = {};
+	struct mana_deregister_filter_req req = {};
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_DEREGISTER_FILTER,
+			     sizeof(req), sizeof(resp));
+	req.filter_handle = apc->pf_filter_handle;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err) {
+		if (mana_en_need_log(apc, err))
+			netdev_err(apc->ndev, "Failed to unregister filter: %d\n",
+				   err);
+
+		return;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_DEREGISTER_FILTER,
+				   sizeof(resp));
+	if (err || resp.hdr.status)
+		netdev_err(apc->ndev,
+			   "Failed to deregister filter: %d, 0x%x\n",
+			   err, resp.hdr.status);
+}
+
+int mana_gd_query_device_cfg(struct gdma_context *gc, u32 proto_major_ver,
+			     u32 proto_minor_ver, u32 proto_micro_ver,
+			     u16 *max_num_vports, u8 *bm_hostmode)
+{
+	struct mana_query_device_cfg_resp resp = {};
+	struct mana_query_device_cfg_req req = {};
+	struct device *dev = gc->dev;
+	int err = 0;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_DEV_CONFIG,
+			     sizeof(req), sizeof(resp));
+
+	req.hdr.resp.msg_version = GDMA_MESSAGE_V3;
+
+	req.proto_major_ver = proto_major_ver;
+	req.proto_minor_ver = proto_minor_ver;
+	req.proto_micro_ver = proto_micro_ver;
+
+	err = gdma_mana_send_request(gc, &req, sizeof(req),
+				     &resp, sizeof(resp));
+	if (err) {
+		dev_err(dev, "Failed to query config: %d", err);
+		return err;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_DEV_CONFIG,
+				   sizeof(resp));
+	if (err || resp.hdr.status) {
+		dev_err(dev, "Invalid query result: %d, 0x%x\n", err,
+			resp.hdr.status);
+		if (!err)
+			err = -EPROTO;
+		return err;
+	}
+
+	*max_num_vports = resp.max_num_vports;
+
+	if (resp.hdr.response.msg_version >= GDMA_MESSAGE_V2) {
+		if (resp.adapter_mtu < ETH_MIN_MTU + ETH_HLEN) {
+			dev_err(dev, "Adapter MTU too small: %u\n",
+				resp.adapter_mtu);
+			return -EPROTO;
+		}
+		gc->adapter_mtu = resp.adapter_mtu;
+	} else {
+		gc->adapter_mtu = ETH_FRAME_LEN;
+	}
+
+	if (resp.hdr.response.msg_version >= GDMA_MESSAGE_V3)
+		*bm_hostmode = resp.bm_hostmode;
+	else
+		*bm_hostmode = 0;
+
+	return 0;
+}
+
+static int mana_query_vport_cfg(struct mana_port_context *apc, u32 vport_index,
+				u32 *max_sq, u32 *max_rq, u32 *num_indir_entry)
+{
+	struct mana_query_vport_cfg_resp resp = {};
+	struct mana_query_vport_cfg_req req = {};
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_VPORT_CONFIG,
+			     sizeof(req), sizeof(resp));
+
+	req.vport_index = vport_index;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err)
+		return err;
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_VPORT_CONFIG,
+				   sizeof(resp));
+	if (err)
+		return err;
+
+	if (resp.hdr.status)
+		return -EPROTO;
+
+	*max_sq = resp.max_num_sq;
+	*max_rq = resp.max_num_rq;
+
+	if (*max_sq == 0 || *max_rq == 0) {
+		netdev_err(apc->ndev, "Invalid max queues from vPort config\n");
+		return -EPROTO;
+	}
+
+	if (resp.num_indirection_ent > 0 &&
+	    resp.num_indirection_ent <= MANA_INDIRECT_TABLE_MAX_SIZE &&
+	    is_power_of_2(resp.num_indirection_ent)) {
+		*num_indir_entry = resp.num_indirection_ent;
+	} else {
+		netdev_warn(apc->ndev,
+			    "Setting indirection table size to default %d for vPort %d\n",
+			    MANA_INDIRECT_TABLE_DEF_SIZE, apc->port_idx);
+		*num_indir_entry = MANA_INDIRECT_TABLE_DEF_SIZE;
+	}
+
+	apc->port_handle = resp.vport;
+	ether_addr_copy(apc->mac_addr, resp.mac_addr);
+
+	apc->vport_max_sq = *max_sq;
+	apc->vport_max_rq = *max_rq;
+
+	return 0;
+}
+
+void mana_uncfg_vport(struct mana_port_context *apc)
+{
+	mutex_lock(&apc->vport_mutex);
+	apc->vport_use_count--;
+	WARN_ON(apc->vport_use_count < 0);
+	mutex_unlock(&apc->vport_mutex);
+}
+EXPORT_SYMBOL_NS(mana_uncfg_vport, "NET_MANA");
+
+int mana_cfg_vport(struct mana_port_context *apc, u32 protection_dom_id,
+		   u32 doorbell_pg_id, bool check_channel_changing)
+{
+	struct mana_config_vport_resp resp = {};
+	struct mana_config_vport_req req = {};
+	int err;
+
+	/* This function is used to program the Ethernet port in the hardware
+	 * table. It can be called from the Ethernet driver or the RDMA driver.
+	 *
+	 * For Ethernet usage, the hardware supports only one active user on a
+	 * physical port. The driver checks on the port usage before programming
+	 * the hardware when creating the RAW QP (RDMA driver) or exposing the
+	 * device to kernel NET layer (Ethernet driver).
+	 *
+	 * Because the RDMA driver doesn't know in advance which QP type the
+	 * user will create, it exposes the device with all its ports. The user
+	 * may not be able to create RAW QP on a port if this port is already
+	 * in used by the Ethernet driver from the kernel.
+	 *
+	 * This physical port limitation only applies to the RAW QP. For RC QP,
+	 * the hardware doesn't have this limitation. The user can create RC
+	 * QPs on a physical port up to the hardware limits independent of the
+	 * Ethernet usage on the same port.
+	 */
+	mutex_lock(&apc->vport_mutex);
+	if (apc->vport_use_count > 0 ||
+	    (check_channel_changing && apc->channel_changing)) {
+		mutex_unlock(&apc->vport_mutex);
+		return -EBUSY;
+	}
+	apc->vport_use_count++;
+	mutex_unlock(&apc->vport_mutex);
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_CONFIG_VPORT_TX,
+			     sizeof(req), sizeof(resp));
+	req.vport = apc->port_handle;
+	req.pdid = protection_dom_id;
+	req.doorbell_pageid = doorbell_pg_id;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err) {
+		netdev_err(apc->ndev, "Failed to configure vPort: %d\n", err);
+		goto out;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_TX,
+				   sizeof(resp));
+	if (err || resp.hdr.status) {
+		netdev_err(apc->ndev, "Failed to configure vPort: %d, 0x%x\n",
+			   err, resp.hdr.status);
+		if (!err)
+			err = -EPROTO;
+
+		goto out;
+	}
+
+	apc->tx_shortform_allowed = resp.short_form_allowed;
+	apc->tx_vp_offset = resp.tx_vport_offset;
+
+	netdev_info(apc->ndev, "Enabled vPort %llu PD %u DB %u MAC %pM\n",
+		    apc->port_handle, protection_dom_id, doorbell_pg_id, apc->mac_addr);
+out:
+	if (err)
+		mana_uncfg_vport(apc);
+
+	return err;
+}
+EXPORT_SYMBOL_NS(mana_cfg_vport, "NET_MANA");
+
+static int mana_cfg_vport_steering(struct mana_port_context *apc,
+				   enum TRI_STATE rx,
+				   bool update_default_rxobj, bool update_key,
+				   bool update_tab)
+{
+	struct mana_cfg_rx_steer_req_v2 *req;
+	struct mana_cfg_rx_steer_resp resp = {};
+	struct net_device *ndev = apc->ndev;
+	u32 req_buf_size;
+	int err;
+
+	req_buf_size = struct_size(req, indir_tab, apc->indir_table_sz);
+	req = kzalloc(req_buf_size, GFP_KERNEL);
+	if (!req)
+		return -ENOMEM;
+
+	mana_gd_init_req_hdr(&req->hdr, MANA_CONFIG_VPORT_RX, req_buf_size,
+			     sizeof(resp));
+
+	req->hdr.req.msg_version = GDMA_MESSAGE_V2;
+	req->hdr.resp.msg_version = GDMA_MESSAGE_V2;
+
+	req->vport = apc->port_handle;
+	req->num_indir_entries = apc->indir_table_sz;
+	req->indir_tab_offset = offsetof(struct mana_cfg_rx_steer_req_v2,
+					 indir_tab);
+	req->rx_enable = rx;
+	req->rss_enable = apc->rss_state;
+	req->update_default_rxobj = update_default_rxobj;
+	req->update_hashkey = update_key;
+	req->update_indir_tab = update_tab;
+	req->default_rxobj = apc->default_rxobj;
+
+	if (rx != TRI_STATE_FALSE)
+		req->cqe_coalescing_enable = apc->cqe_coalescing_enable;
+
+	if (update_key)
+		memcpy(&req->hashkey, apc->hashkey, MANA_HASH_KEY_SIZE);
+
+	if (update_tab)
+		memcpy(req->indir_tab, apc->rxobj_table,
+		       flex_array_size(req, indir_tab, req->num_indir_entries));
+
+	err = mana_send_request(apc->ac, req, req_buf_size, &resp,
+				sizeof(resp));
+	if (err) {
+		if (mana_en_need_log(apc, err))
+			netdev_err(ndev, "Failed to configure vPort RX: %d\n", err);
+
+		goto out;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_CONFIG_VPORT_RX,
+				   sizeof(resp));
+	if (err) {
+		netdev_err(ndev, "vPort RX configuration failed: %d\n", err);
+		goto out;
+	}
+
+	if (resp.hdr.status) {
+		netdev_err(ndev, "vPort RX configuration failed: 0x%x\n",
+			   resp.hdr.status);
+		err = -EPROTO;
+		goto out;
+	}
+
+	if (resp.hdr.response.msg_version >= GDMA_MESSAGE_V2)
+		apc->cqe_coalescing_timeout_ns =
+			resp.cqe_coalescing_timeout_ns;
+
+	netdev_info(ndev, "Configured steering vPort %llu entries %u\n",
+		    apc->port_handle, apc->indir_table_sz);
+
+	apc->steer_rx = rx;
+	apc->steer_rss = apc->rss_state;
+	apc->steer_update_tab = update_tab;
+	apc->steer_cqe_coalescing = req->cqe_coalescing_enable;
+out:
+	kfree(req);
+	return err;
+}
+
+int mana_query_link_cfg(struct mana_port_context *apc)
+{
+	struct net_device *ndev = apc->ndev;
+	struct mana_query_link_config_resp resp = {};
+	struct mana_query_link_config_req req = {};
+	int err;
+
+	netdev_assert_locked(ndev);
+
+	err = apc->link_cfg_error;
+	if (err <= 0)
+		return err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_LINK_CONFIG,
+			     sizeof(req), sizeof(resp));
+
+	req.vport = apc->port_handle;
+	req.hdr.resp.msg_version = GDMA_MESSAGE_V2;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+
+	if (err) {
+		if (err == -EOPNOTSUPP) {
+			netdev_info_once(ndev, "MANA_QUERY_LINK_CONFIG not supported\n");
+			apc->link_cfg_error = err;
+			return err;
+		}
+		netdev_err(ndev, "Failed to query link config: %d\n", err);
+		return err;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_LINK_CONFIG,
+				   sizeof(resp));
+
+	if (err || resp.hdr.status) {
+		netdev_err(ndev, "Failed to query link config: %d, 0x%x\n", err,
+			   resp.hdr.status);
+		if (!err)
+			err = -EOPNOTSUPP;
+		return err;
+	}
+
+	if (resp.qos_unconfigured)
+		return -EINVAL;
+
+	apc->speed = resp.link_speed_mbps;
+	apc->max_speed = resp.qos_speed_mbps;
+	apc->link_cfg_error = 0;
+	return 0;
+}
+
+int mana_set_bw_clamp(struct mana_port_context *apc, u32 speed,
+		      int enable_clamping)
+{
+	struct mana_set_bw_clamp_resp resp = {};
+	struct mana_set_bw_clamp_req req = {};
+	struct net_device *ndev = apc->ndev;
+	int err;
+
+	netdev_assert_locked(ndev);
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_SET_BW_CLAMP,
+			     sizeof(req), sizeof(resp));
+	req.vport = apc->port_handle;
+	req.link_speed_mbps = speed;
+	req.enable_clamping = enable_clamping;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+
+	if (err) {
+		if (err == -EOPNOTSUPP) {
+			netdev_info_once(ndev, "MANA_SET_BW_CLAMP not supported\n");
+			return err;
+		}
+		netdev_err(ndev, "Failed to set bandwidth clamp for speed %u, err = %d",
+			   speed, err);
+		return err;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_SET_BW_CLAMP,
+				   sizeof(resp));
+
+	if (err || resp.hdr.status) {
+		netdev_err(ndev, "Failed to set bandwidth clamp: %d, 0x%x\n", err,
+			   resp.hdr.status);
+		if (!err)
+			err = -EOPNOTSUPP;
+		return err;
+	}
+
+	if (resp.qos_unconfigured)
+		netdev_info(ndev, "QoS is unconfigured\n");
+
+	/* Invalidate the cache; next query will re-fetch from firmware. */
+	apc->link_cfg_error = 1;
+	return 0;
+}
+
+int mana_create_wq_obj(struct mana_port_context *apc,
+		       mana_handle_t vport,
+		       u32 wq_type, struct mana_obj_spec *wq_spec,
+		       struct mana_obj_spec *cq_spec,
+		       mana_handle_t *wq_obj)
+{
+	struct mana_create_wqobj_resp resp = {};
+	struct mana_create_wqobj_req req = {};
+	struct net_device *ndev = apc->ndev;
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_CREATE_WQ_OBJ,
+			     sizeof(req), sizeof(resp));
+	req.vport = vport;
+	req.wq_type = wq_type;
+	req.wq_gdma_region = wq_spec->gdma_region;
+	req.cq_gdma_region = cq_spec->gdma_region;
+	req.wq_size = wq_spec->queue_size;
+	req.cq_size = cq_spec->queue_size;
+	req.cq_moderation_ctx_id = cq_spec->modr_ctx_id;
+	req.cq_parent_qid = cq_spec->attached_eq;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err) {
+		netdev_err(ndev, "Failed to create WQ object: %d\n", err);
+		goto out;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_CREATE_WQ_OBJ,
+				   sizeof(resp));
+	if (err || resp.hdr.status) {
+		netdev_err(ndev, "Failed to create WQ object: %d, 0x%x\n", err,
+			   resp.hdr.status);
+		if (!err)
+			err = -EPROTO;
+		goto out;
+	}
+
+	if (resp.wq_obj == INVALID_MANA_HANDLE) {
+		netdev_err(ndev, "Got an invalid WQ object handle\n");
+		err = -EPROTO;
+		goto out;
+	}
+
+	*wq_obj = resp.wq_obj;
+	wq_spec->queue_index = resp.wq_id;
+	cq_spec->queue_index = resp.cq_id;
+
+	return 0;
+out:
+	return err;
+}
+EXPORT_SYMBOL_NS(mana_create_wq_obj, "NET_MANA");
+
+void mana_destroy_wq_obj(struct mana_port_context *apc, u32 wq_type,
+			 mana_handle_t wq_obj)
+{
+	struct mana_destroy_wqobj_resp resp = {};
+	struct mana_destroy_wqobj_req req = {};
+	struct net_device *ndev = apc->ndev;
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_DESTROY_WQ_OBJ,
+			     sizeof(req), sizeof(resp));
+	req.wq_type = wq_type;
+	req.wq_obj_handle = wq_obj;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err) {
+		if (mana_en_need_log(apc, err))
+			netdev_err(ndev, "Failed to destroy WQ object: %d\n", err);
+
+		return;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_DESTROY_WQ_OBJ,
+				   sizeof(resp));
+	if (err || resp.hdr.status)
+		netdev_err(ndev, "Failed to destroy WQ object: %d, 0x%x\n", err,
+			   resp.hdr.status);
+}
+EXPORT_SYMBOL_NS(mana_destroy_wq_obj, "NET_MANA");
+
+void mana_destroy_eq(struct mana_port_context *apc)
+{
+	struct mana_context *ac = apc->ac;
+	struct gdma_context *gc = ac->gdma_dev->gdma_context;
+	struct gdma_queue *eq;
+	unsigned int msi;
+	int i;
+
+	if (!apc->eqs)
+		return;
+
+	debugfs_remove_recursive(apc->mana_eqs_debugfs);
+	apc->mana_eqs_debugfs = NULL;
+
+	for (i = 0; i < apc->num_queues; i++) {
+		eq = apc->eqs[i].eq;
+		if (!eq)
+			continue;
+
+		msi = eq->eq.msix_index;
+		mana_gd_destroy_queue(gc, eq);
+		mana_gd_put_gic(gc, !gc->msi_sharing, msi);
+	}
+
+	kfree(apc->eqs);
+	apc->eqs = NULL;
+}
+EXPORT_SYMBOL_NS(mana_destroy_eq, "NET_MANA");
+
+static void mana_create_eq_debugfs(struct mana_port_context *apc, int i)
+{
+	struct mana_eq eq = apc->eqs[i];
+	char eqnum[32];
+
+	sprintf(eqnum, "eq%d", i);
+	eq.mana_eq_debugfs = debugfs_create_dir(eqnum, apc->mana_eqs_debugfs);
+	debugfs_create_u32("head", 0400, eq.mana_eq_debugfs, &eq.eq->head);
+	debugfs_create_u32("tail", 0400, eq.mana_eq_debugfs, &eq.eq->tail);
+	debugfs_create_u32("irq", 0400, eq.mana_eq_debugfs, &eq.eq->eq.irq);
+	debugfs_create_file("eq_dump", 0400, eq.mana_eq_debugfs, eq.eq, &mana_dbg_q_fops);
+}
+
+int mana_create_eq(struct mana_port_context *apc)
+{
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+	struct gdma_context *gc = gd->gdma_context;
+	struct gdma_queue_spec spec = {};
+	struct gdma_irq_context *gic;
+	int err;
+	int msi;
+	int i;
+
+	if (WARN_ON(apc->eqs))
+		return -EEXIST;
+	apc->eqs = kzalloc_objs(struct mana_eq, apc->num_queues);
+	if (!apc->eqs)
+		return -ENOMEM;
+
+	spec.type = GDMA_EQ;
+	spec.monitor_avl_buf = false;
+	spec.queue_size = EQ_SIZE;
+	spec.eq.callback = NULL;
+	spec.eq.context = apc->eqs;
+	spec.eq.log2_throttle_limit = LOG2_EQ_THROTTLE;
+
+	apc->mana_eqs_debugfs =
+		debugfs_create_dir("EQs", apc->mana_port_debugfs);
+
+	for (i = 0; i < apc->num_queues; i++) {
+		msi = (i + 1) % gc->num_msix_usable;
+
+		gic = mana_gd_get_gic(gc, !gc->msi_sharing, &msi);
+		if (IS_ERR(gic)) {
+			err = PTR_ERR(gic);
+			goto out;
+		}
+		spec.eq.msix_index = msi;
+
+		err = mana_gd_create_mana_eq(gd, &spec, &apc->eqs[i].eq);
+		if (err) {
+			dev_err(gc->dev, "Failed to create EQ %d : %d\n", i, err);
+			mana_gd_put_gic(gc, !gc->msi_sharing, msi);
+			goto out;
+		}
+		apc->eqs[i].eq->eq.irq = gic->irq;
+		mana_create_eq_debugfs(apc, i);
+	}
+
+	return 0;
+out:
+	mana_destroy_eq(apc);
+	return err;
+}
+EXPORT_SYMBOL_NS(mana_create_eq, "NET_MANA");
+
+static int mana_fence_rq(struct mana_port_context *apc, struct mana_rxq *rxq)
+{
+	struct mana_fence_rq_resp resp = {};
+	struct mana_fence_rq_req req = {};
+	int err;
+
+	init_completion(&rxq->fence_event);
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_FENCE_RQ,
+			     sizeof(req), sizeof(resp));
+	req.wq_obj_handle =  rxq->rxobj;
+
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err) {
+		netdev_err(apc->ndev, "Failed to fence RQ %u: %d\n",
+			   rxq->rxq_idx, err);
+		return err;
+	}
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_FENCE_RQ, sizeof(resp));
+	if (err || resp.hdr.status) {
+		netdev_err(apc->ndev, "Failed to fence RQ %u: %d, 0x%x\n",
+			   rxq->rxq_idx, err, resp.hdr.status);
+		if (!err)
+			err = -EPROTO;
+
+		return err;
+	}
+
+	if (wait_for_completion_timeout(&rxq->fence_event, 10 * HZ) == 0) {
+		netdev_err(apc->ndev, "Failed to fence RQ %u: timed out\n",
+			   rxq->rxq_idx);
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+static void mana_fence_rqs(struct mana_port_context *apc)
+{
+	unsigned int rxq_idx;
+	struct mana_rxq *rxq;
+	int err;
+
+	if (!apc->rxqs)
+		return;
+
+	for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) {
+		rxq = apc->rxqs[rxq_idx];
+		err = mana_fence_rq(apc, rxq);
+
+		/* In case of any error, use sleep instead. */
+		if (err)
+			msleep(100);
+	}
+}
+
+static int mana_move_wq_tail(struct gdma_queue *wq, u32 num_units)
+{
+	u32 used_space_old;
+	u32 used_space_new;
+
+	used_space_old = wq->head - wq->tail;
+	used_space_new = wq->head - (wq->tail + num_units);
+
+	if (WARN_ON_ONCE(used_space_new > used_space_old))
+		return -ERANGE;
+
+	wq->tail += num_units;
+	return 0;
+}
+
+void mana_unmap_skb(struct sk_buff *skb, struct mana_port_context *apc)
+{
+	struct mana_skb_head *ash = (struct mana_skb_head *)skb->head;
+	struct gdma_context *gc = apc->ac->gdma_dev->gdma_context;
+	struct device *dev = gc->dev;
+	int hsg, i;
+
+	/* Number of SGEs of linear part */
+	hsg = (skb_is_gso(skb) && skb_headlen(skb) > ash->size[0]) ? 2 : 1;
+
+	for (i = 0; i < hsg; i++)
+		dma_unmap_single(dev, ash->dma_handle[i], ash->size[i],
+				 DMA_TO_DEVICE);
+
+	for (i = hsg; i < skb_shinfo(skb)->nr_frags + hsg; i++)
+		dma_unmap_page(dev, ash->dma_handle[i], ash->size[i],
+			       DMA_TO_DEVICE);
+}
+
+static void mana_poll_tx_cq(struct mana_cq *cq)
+{
+	struct gdma_comp *completions = cq->gdma_comp_buf;
+	struct gdma_posted_wqe_info *wqe_info;
+	unsigned int pkt_transmitted = 0;
+	unsigned int wqe_unit_cnt = 0;
+	struct mana_txq *txq = cq->txq;
+	struct mana_port_context *apc;
+	struct netdev_queue *net_txq;
+	struct gdma_queue *gdma_wq;
+	unsigned int avail_space;
+	struct net_device *ndev;
+	struct sk_buff *skb;
+	bool txq_stopped;
+	int comp_read;
+	int i;
+
+	ndev = txq->ndev;
+	apc = netdev_priv(ndev);
+
+	/* Limit CQEs polled to 4 wraparounds of the CQ to ensure the
+	 * doorbell can be rung in time for the hardware's requirement
+	 * of at least one doorbell ring every 8 wraparounds.
+	 */
+	comp_read = mana_gd_poll_cq(cq->gdma_cq, completions,
+				    min((cq->gdma_cq->queue_size /
+					  COMP_ENTRY_SIZE) * 4,
+					 CQE_POLLING_BUFFER));
+
+	if (comp_read < 1)
+		return;
+
+	for (i = 0; i < comp_read; i++) {
+		struct mana_tx_comp_oob *cqe_oob;
+
+		if (WARN_ON_ONCE(!completions[i].is_sq))
+			return;
+
+		cqe_oob = (struct mana_tx_comp_oob *)completions[i].cqe_data;
+		if (WARN_ON_ONCE(cqe_oob->cqe_hdr.client_type !=
+				 MANA_CQE_COMPLETION))
+			return;
+
+		switch (cqe_oob->cqe_hdr.cqe_type) {
+		case CQE_TX_OKAY:
+			break;
+
+		case CQE_TX_SA_DROP:
+		case CQE_TX_MTU_DROP:
+		case CQE_TX_INVALID_OOB:
+		case CQE_TX_INVALID_ETH_TYPE:
+		case CQE_TX_HDR_PROCESSING_ERROR:
+		case CQE_TX_VF_DISABLED:
+		case CQE_TX_VPORT_IDX_OUT_OF_RANGE:
+		case CQE_TX_VPORT_DISABLED:
+		case CQE_TX_VLAN_TAGGING_VIOLATION:
+			if (net_ratelimit())
+				netdev_err(ndev, "TX: CQE error %d\n",
+					   cqe_oob->cqe_hdr.cqe_type);
+
+			apc->eth_stats.tx_cqe_err++;
+			break;
+
+		default:
+			/* If the CQE type is unknown, log an error,
+			 * and still free the SKB, update tail, etc.
+			 */
+			if (net_ratelimit())
+				netdev_err(ndev, "TX: unknown CQE type %d\n",
+					   cqe_oob->cqe_hdr.cqe_type);
+
+			apc->eth_stats.tx_cqe_unknown_type++;
+			break;
+		}
+
+		if (WARN_ON_ONCE(txq->gdma_txq_id != completions[i].wq_num))
+			return;
+
+		skb = skb_dequeue(&txq->pending_skbs);
+		if (WARN_ON_ONCE(!skb))
+			return;
+
+		wqe_info = (struct gdma_posted_wqe_info *)skb->cb;
+		wqe_unit_cnt += wqe_info->wqe_size_in_bu;
+
+		mana_unmap_skb(skb, apc);
+
+		napi_consume_skb(skb, cq->budget);
+
+		pkt_transmitted++;
+	}
+
+	if (WARN_ON_ONCE(wqe_unit_cnt == 0))
+		return;
+
+	mana_move_wq_tail(txq->gdma_sq, wqe_unit_cnt);
+
+	gdma_wq = txq->gdma_sq;
+	avail_space = mana_gd_wq_avail_space(gdma_wq);
+
+	/* Ensure tail updated before checking q stop */
+	smp_mb();
+
+	net_txq = txq->net_txq;
+	txq_stopped = netif_tx_queue_stopped(net_txq);
+
+	/* Ensure checking txq_stopped before apc->port_is_up. */
+	smp_rmb();
+
+	if (txq_stopped && apc->port_is_up && avail_space >= MAX_TX_WQE_SIZE) {
+		netif_tx_wake_queue(net_txq);
+		apc->eth_stats.wake_queue++;
+	}
+
+	if (atomic_sub_return(pkt_transmitted, &txq->pending_sends) < 0)
+		WARN_ON_ONCE(1);
+
+	cq->work_done = pkt_transmitted;
+}
+
+static void mana_post_pkt_rxq(struct mana_rxq *rxq)
+{
+	struct mana_recv_buf_oob *recv_buf_oob;
+	u32 curr_index;
+	int err;
+
+	curr_index = rxq->buf_index++;
+	if (rxq->buf_index == rxq->num_rx_buf)
+		rxq->buf_index = 0;
+
+	recv_buf_oob = &rxq->rx_oobs[curr_index];
+
+	err = mana_gd_post_work_request(rxq->gdma_rq, &recv_buf_oob->wqe_req,
+					&recv_buf_oob->wqe_inf);
+	if (WARN_ON_ONCE(err))
+		return;
+
+	WARN_ON_ONCE(recv_buf_oob->wqe_inf.wqe_size_in_bu != 1);
+}
+
+static struct sk_buff *mana_build_skb(struct mana_rxq *rxq, void *buf_va,
+				      uint pkt_len, struct xdp_buff *xdp)
+{
+	struct sk_buff *skb = napi_build_skb(buf_va, rxq->alloc_size);
+
+	if (!skb)
+		return NULL;
+
+	if (xdp->data_hard_start) {
+		u32 metasize = xdp->data - xdp->data_meta;
+
+		skb_reserve(skb, xdp->data - xdp->data_hard_start);
+		skb_put(skb, xdp->data_end - xdp->data);
+		if (metasize)
+			skb_metadata_set(skb, metasize);
+		return skb;
+	}
+
+	skb_reserve(skb, rxq->headroom);
+	skb_put(skb, pkt_len);
+
+	return skb;
+}
+
+static void mana_rx_skb(void *buf_va, bool from_pool,
+			struct mana_rxcomp_oob *cqe, struct mana_rxq *rxq,
+			int i)
+{
+	struct mana_stats_rx *rx_stats = &rxq->stats;
+	struct net_device *ndev = rxq->ndev;
+	uint pkt_len = cqe->ppi[i].pkt_len;
+	u16 rxq_idx = rxq->rxq_idx;
+	struct napi_struct *napi;
+	struct xdp_buff xdp = {};
+	struct sk_buff *skb;
+	u32 hash_value;
+	u32 act;
+
+	rxq->rx_cq.work_done++;
+	napi = &rxq->rx_cq.napi;
+
+	if (!buf_va) {
+		++ndev->stats.rx_dropped;
+		return;
+	}
+
+	act = mana_run_xdp(ndev, rxq, &xdp, buf_va, pkt_len);
+
+	if (act == XDP_REDIRECT && !rxq->xdp_rc)
+		return;
+
+	if (act != XDP_PASS && act != XDP_TX)
+		goto drop_xdp;
+
+	skb = mana_build_skb(rxq, buf_va, pkt_len, &xdp);
+
+	if (!skb)
+		goto drop;
+
+	if (from_pool)
+		skb_mark_for_recycle(skb);
+
+	skb->dev = napi->dev;
+
+	skb->protocol = eth_type_trans(skb, ndev);
+	skb_checksum_none_assert(skb);
+	skb_record_rx_queue(skb, rxq_idx);
+
+	if ((ndev->features & NETIF_F_RXCSUM) && cqe->rx_iphdr_csum_succeed) {
+		if (cqe->rx_tcp_csum_succeed || cqe->rx_udp_csum_succeed)
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+	}
+
+	if (cqe->rx_hashtype != 0 && (ndev->features & NETIF_F_RXHASH)) {
+		hash_value = cqe->ppi[i].pkt_hash;
+
+		if (cqe->rx_hashtype & MANA_HASH_L4)
+			skb_set_hash(skb, hash_value, PKT_HASH_TYPE_L4);
+		else
+			skb_set_hash(skb, hash_value, PKT_HASH_TYPE_L3);
+	}
+
+	if (cqe->rx_vlantag_present) {
+		u16 vlan_tci = cqe->rx_vlan_id;
+
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci);
+	}
+
+	u64_stats_update_begin(&rx_stats->syncp);
+	rx_stats->packets++;
+	rx_stats->bytes += pkt_len;
+
+	if (act == XDP_TX)
+		rx_stats->xdp_tx++;
+	u64_stats_update_end(&rx_stats->syncp);
+
+	if (act == XDP_TX) {
+		skb_set_queue_mapping(skb, rxq_idx);
+		mana_xdp_tx(skb, ndev);
+		return;
+	}
+
+	napi_gro_receive(napi, skb);
+
+	return;
+
+drop_xdp:
+	u64_stats_update_begin(&rx_stats->syncp);
+	rx_stats->xdp_drop++;
+	u64_stats_update_end(&rx_stats->syncp);
+
+drop:
+	if (from_pool) {
+		if (rxq->frag_count == 1)
+			page_pool_recycle_direct(rxq->page_pool,
+						 virt_to_head_page(buf_va));
+		else
+			page_pool_free_va(rxq->page_pool, buf_va, true);
+	} else {
+		WARN_ON_ONCE(rxq->xdp_save_va);
+		/* Save for reuse */
+		rxq->xdp_save_va = buf_va;
+	}
+
+	++ndev->stats.rx_dropped;
+
+	return;
+}
+
+static void *mana_get_rxfrag(struct mana_rxq *rxq, struct device *dev,
+			     dma_addr_t *da, bool *from_pool)
+{
+	struct page *page;
+	u32 offset;
+	void *va;
+	*from_pool = false;
+
+	/* Don't use fragments for jumbo frames or XDP where it's 1 fragment
+	 * per page.
+	 */
+	if (rxq->frag_count == 1) {
+		/* Reuse XDP dropped page if available */
+		if (rxq->xdp_save_va) {
+			va = rxq->xdp_save_va;
+			page = virt_to_head_page(va);
+			rxq->xdp_save_va = NULL;
+		} else {
+			page = page_pool_dev_alloc_pages(rxq->page_pool);
+			if (!page)
+				return NULL;
+
+			*from_pool = true;
+			va = page_to_virt(page);
+		}
+
+		*da = dma_map_single(dev, va + rxq->headroom, rxq->datasize,
+				     DMA_FROM_DEVICE);
+		if (dma_mapping_error(dev, *da)) {
+			mana_put_rx_page(rxq, page, *from_pool);
+			return NULL;
+		}
+
+		return va;
+	}
+
+	page =  page_pool_dev_alloc_frag(rxq->page_pool, &offset,
+					 rxq->alloc_size);
+	if (!page)
+		return NULL;
+
+	va  = page_to_virt(page) + offset;
+	*da = page_pool_get_dma_addr(page) + offset + rxq->headroom;
+	*from_pool = true;
+
+	return va;
+}
+
+/* Allocate frag for rx buffer, and save the old buf */
+static void mana_refill_rx_oob(struct device *dev, struct mana_rxq *rxq,
+			       struct mana_recv_buf_oob *rxoob, void **old_buf,
+			       bool *old_fp)
+{
+	bool from_pool;
+	dma_addr_t da;
+	void *va;
+
+	va = mana_get_rxfrag(rxq, dev, &da, &from_pool);
+	if (!va)
+		return;
+	if (!rxoob->from_pool || rxq->frag_count == 1)
+		dma_unmap_single(dev, rxoob->sgl[0].address, rxq->datasize,
+				 DMA_FROM_DEVICE);
+	*old_buf = rxoob->buf_va;
+	*old_fp = rxoob->from_pool;
+
+	rxoob->buf_va = va;
+	rxoob->sgl[0].address = da;
+	rxoob->from_pool = from_pool;
+}
+
+static void mana_process_rx_cqe(struct mana_rxq *rxq, struct mana_cq *cq,
+				struct gdma_comp *cqe)
+{
+	struct mana_rxcomp_oob *oob = (struct mana_rxcomp_oob *)cqe->cqe_data;
+	struct gdma_context *gc = rxq->gdma_rq->gdma_dev->gdma_context;
+	struct net_device *ndev = rxq->ndev;
+	struct mana_recv_buf_oob *rxbuf_oob;
+	struct mana_port_context *apc;
+	struct device *dev = gc->dev;
+	bool coalesced = false;
+	void *old_buf = NULL;
+	u32 curr, pktlen;
+	bool old_fp;
+	int i;
+
+	apc = netdev_priv(ndev);
+
+	switch (oob->cqe_hdr.cqe_type) {
+	case CQE_RX_OKAY:
+		break;
+
+	case CQE_RX_TRUNCATED:
+		++ndev->stats.rx_dropped;
+		rxbuf_oob = &rxq->rx_oobs[rxq->buf_index];
+		netdev_warn_once(ndev, "Dropped a truncated packet\n");
+
+		mana_move_wq_tail(rxq->gdma_rq,
+				  rxbuf_oob->wqe_inf.wqe_size_in_bu);
+		mana_post_pkt_rxq(rxq);
+		return;
+
+	case CQE_RX_COALESCED_4:
+		coalesced = true;
+		break;
+
+	case CQE_RX_OBJECT_FENCE:
+		complete(&rxq->fence_event);
+		return;
+
+	default:
+		netdev_err(ndev, "Unknown RX CQE type = %d\n",
+			   oob->cqe_hdr.cqe_type);
+		apc->eth_stats.rx_cqe_unknown_type++;
+		return;
+	}
+
+	for (i = 0; i < MANA_RXCOMP_OOB_NUM_PPI; i++) {
+		old_buf = NULL;
+		pktlen = oob->ppi[i].pkt_len;
+		if (pktlen == 0)
+			break;
+
+		curr = rxq->buf_index;
+		rxbuf_oob = &rxq->rx_oobs[curr];
+		WARN_ON_ONCE(rxbuf_oob->wqe_inf.wqe_size_in_bu != 1);
+
+		mana_refill_rx_oob(dev, rxq, rxbuf_oob, &old_buf, &old_fp);
+
+		/* Unsuccessful refill will have old_buf == NULL.
+		 * In this case, mana_rx_skb() will drop the packet.
+		 */
+		mana_rx_skb(old_buf, old_fp, oob, rxq, i);
+
+		mana_move_wq_tail(rxq->gdma_rq,
+				  rxbuf_oob->wqe_inf.wqe_size_in_bu);
+
+		mana_post_pkt_rxq(rxq);
+
+		if (!coalesced)
+			break;
+	}
+
+	/* Collect coalesced CQE count based on packets processed.
+	 * Coalesced CQEs have at least 2 packets, so index is i - 2.
+	 */
+	if (i > 1) {
+		u64_stats_update_begin(&rxq->stats.syncp);
+		rxq->stats.coalesced_cqe[i - 2]++;
+		u64_stats_update_end(&rxq->stats.syncp);
+	} else if (!i && !pktlen) {
+		u64_stats_update_begin(&rxq->stats.syncp);
+		rxq->stats.pkt_len0_err++;
+		u64_stats_update_end(&rxq->stats.syncp);
+		netdev_err_once(ndev,
+				"RX pkt len=0, rq=%u, cq=%u, rxobj=0x%llx\n",
+				rxq->gdma_id, cq->gdma_id, rxq->rxobj);
+	}
+}
+
+static void mana_poll_rx_cq(struct mana_cq *cq)
+{
+	struct gdma_comp *comp = cq->gdma_comp_buf;
+	struct mana_rxq *rxq = cq->rxq;
+	int comp_read, i;
+
+	/* Limit CQEs polled to 4 wraparounds of the CQ to ensure the
+	 * doorbell can be rung in time for the hardware's requirement
+	 * of at least one doorbell ring every 8 wraparounds.
+	 */
+	comp_read = mana_gd_poll_cq(cq->gdma_cq, comp,
+				    min((cq->gdma_cq->queue_size /
+					  COMP_ENTRY_SIZE) * 4,
+					 CQE_POLLING_BUFFER));
+	WARN_ON_ONCE(comp_read > CQE_POLLING_BUFFER);
+
+	rxq->xdp_flush = false;
+
+	for (i = 0; i < comp_read; i++) {
+		if (WARN_ON_ONCE(comp[i].is_sq))
+			return;
+
+		/* verify recv cqe references the right rxq */
+		if (WARN_ON_ONCE(comp[i].wq_num != cq->rxq->gdma_id))
+			return;
+
+		mana_process_rx_cqe(rxq, cq, &comp[i]);
+	}
+
+	if (comp_read > 0) {
+		struct gdma_context *gc = rxq->gdma_rq->gdma_dev->gdma_context;
+
+		mana_gd_wq_ring_doorbell(gc, rxq->gdma_rq);
+	}
+
+	if (rxq->xdp_flush)
+		xdp_do_flush();
+}
+
+static int mana_cq_handler(void *context, struct gdma_queue *gdma_queue)
+{
+	struct mana_cq *cq = context;
+	int w;
+
+	WARN_ON_ONCE(cq->gdma_cq != gdma_queue);
+
+	if (cq->type == MANA_CQ_TYPE_RX)
+		mana_poll_rx_cq(cq);
+	else
+		mana_poll_tx_cq(cq);
+
+	w = cq->work_done;
+	cq->work_done_since_doorbell += w;
+
+	if (w < cq->budget) {
+		mana_gd_ring_cq(gdma_queue, SET_ARM_BIT);
+		cq->work_done_since_doorbell = 0;
+		napi_complete_done(&cq->napi, w);
+	} else if (cq->work_done_since_doorbell >=
+		   (cq->gdma_cq->queue_size / COMP_ENTRY_SIZE) * 4) {
+		/* MANA hardware requires at least one doorbell ring every 8
+		 * wraparounds of CQ even if there is no need to arm the CQ.
+		 * This driver rings the doorbell as soon as it has processed
+		 * 4 wraparounds.
+		 */
+		mana_gd_ring_cq(gdma_queue, 0);
+		cq->work_done_since_doorbell = 0;
+	}
+
+	return w;
+}
+
+static int mana_poll(struct napi_struct *napi, int budget)
+{
+	struct mana_cq *cq = container_of(napi, struct mana_cq, napi);
+	int w;
+
+	cq->work_done = 0;
+	cq->budget = budget;
+
+	w = mana_cq_handler(cq, cq->gdma_cq);
+
+	return min(w, budget);
+}
+
+static void mana_schedule_napi(void *context, struct gdma_queue *gdma_queue)
+{
+	struct mana_cq *cq = context;
+
+	napi_schedule_irqoff(&cq->napi);
+}
+
+static void mana_deinit_cq(struct mana_port_context *apc, struct mana_cq *cq)
+{
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+
+	if (!cq->gdma_cq)
+		return;
+
+	mana_gd_destroy_queue(gd->gdma_context, cq->gdma_cq);
+}
+
+static void mana_deinit_txq(struct mana_port_context *apc, struct mana_txq *txq)
+{
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+
+	if (!txq->gdma_sq)
+		return;
+
+	mana_gd_destroy_queue(gd->gdma_context, txq->gdma_sq);
+}
+
+static void mana_destroy_txq(struct mana_port_context *apc)
+{
+	struct napi_struct *napi;
+	int i;
+
+	if (!apc->tx_qp)
+		return;
+
+	for (i = 0; i < apc->num_queues; i++) {
+		if (!apc->tx_qp[i])
+			continue;
+
+		debugfs_remove_recursive(apc->tx_qp[i]->mana_tx_debugfs);
+		apc->tx_qp[i]->mana_tx_debugfs = NULL;
+
+		napi = &apc->tx_qp[i]->tx_cq.napi;
+		if (apc->tx_qp[i]->txq.napi_initialized) {
+			napi_synchronize(napi);
+			napi_disable_locked(napi);
+			netif_napi_del_locked(napi);
+			apc->tx_qp[i]->txq.napi_initialized = false;
+		}
+
+		if (apc->tx_qp[i]->tx_object != INVALID_MANA_HANDLE)
+			mana_destroy_wq_obj(apc, GDMA_SQ, apc->tx_qp[i]->tx_object);
+
+		mana_deinit_cq(apc, &apc->tx_qp[i]->tx_cq);
+
+		mana_deinit_txq(apc, &apc->tx_qp[i]->txq);
+
+		kvfree(apc->tx_qp[i]);
+	}
+
+	kfree(apc->tx_qp);
+	apc->tx_qp = NULL;
+}
+
+static void mana_create_txq_debugfs(struct mana_port_context *apc, int idx)
+{
+	struct mana_tx_qp *tx_qp = apc->tx_qp[idx];
+	char qnum[32];
+
+	sprintf(qnum, "TX-%d", idx);
+	tx_qp->mana_tx_debugfs = debugfs_create_dir(qnum, apc->mana_port_debugfs);
+	debugfs_create_u32("sq_head", 0400, tx_qp->mana_tx_debugfs,
+			   &tx_qp->txq.gdma_sq->head);
+	debugfs_create_u32("sq_tail", 0400, tx_qp->mana_tx_debugfs,
+			   &tx_qp->txq.gdma_sq->tail);
+	debugfs_create_u32("sq_pend_skb_qlen", 0400, tx_qp->mana_tx_debugfs,
+			   &tx_qp->txq.pending_skbs.qlen);
+	debugfs_create_u32("cq_head", 0400, tx_qp->mana_tx_debugfs,
+			   &tx_qp->tx_cq.gdma_cq->head);
+	debugfs_create_u32("cq_tail", 0400, tx_qp->mana_tx_debugfs,
+			   &tx_qp->tx_cq.gdma_cq->tail);
+	debugfs_create_u32("cq_budget", 0400, tx_qp->mana_tx_debugfs,
+			   &tx_qp->tx_cq.budget);
+	debugfs_create_file("txq_dump", 0400, tx_qp->mana_tx_debugfs,
+			    tx_qp->txq.gdma_sq, &mana_dbg_q_fops);
+	debugfs_create_file("cq_dump", 0400, tx_qp->mana_tx_debugfs,
+			    tx_qp->tx_cq.gdma_cq, &mana_dbg_q_fops);
+}
+
+static int mana_create_txq(struct mana_port_context *apc,
+			   struct net_device *net)
+{
+	struct mana_context *ac = apc->ac;
+	struct gdma_dev *gd = ac->gdma_dev;
+	struct mana_obj_spec wq_spec;
+	struct mana_obj_spec cq_spec;
+	struct gdma_queue_spec spec;
+	struct gdma_context *gc;
+	struct mana_txq *txq;
+	struct mana_cq *cq;
+	u32 txq_size;
+	u32 cq_size;
+	int err;
+	int i;
+
+	apc->tx_qp = kzalloc_objs(struct mana_tx_qp *, apc->num_queues);
+	if (!apc->tx_qp)
+		return -ENOMEM;
+
+	/*  The minimum size of the WQE is 32 bytes, hence
+	 *  apc->tx_queue_size represents the maximum number of WQEs
+	 *  the SQ can store. This value is then used to size other queues
+	 *  to prevent overflow.
+	 *  Also note that the txq_size is always going to be MANA_PAGE_ALIGNED,
+	 *  as min val of apc->tx_queue_size is 128 and that would make
+	 *  txq_size 128*32 = 4096 and the other higher values of apc->tx_queue_size
+	 *  are always power of two
+	 */
+	txq_size = apc->tx_queue_size * 32;
+
+	cq_size = apc->tx_queue_size * COMP_ENTRY_SIZE;
+
+	gc = gd->gdma_context;
+
+	for (i = 0; i < apc->num_queues; i++) {
+		apc->tx_qp[i] = kvzalloc_obj(*apc->tx_qp[i]);
+		if (!apc->tx_qp[i]) {
+			err = -ENOMEM;
+			goto out;
+		}
+
+		apc->tx_qp[i]->tx_object = INVALID_MANA_HANDLE;
+
+		/* Create SQ */
+		txq = &apc->tx_qp[i]->txq;
+
+		u64_stats_init(&txq->stats.syncp);
+		txq->ndev = net;
+		txq->net_txq = netdev_get_tx_queue(net, i);
+		txq->vp_offset = apc->tx_vp_offset;
+		txq->napi_initialized = false;
+		skb_queue_head_init(&txq->pending_skbs);
+
+		memset(&spec, 0, sizeof(spec));
+		spec.type = GDMA_SQ;
+		spec.monitor_avl_buf = true;
+		spec.queue_size = txq_size;
+		err = mana_gd_create_mana_wq_cq(gd, &spec, &txq->gdma_sq);
+		if (err)
+			goto out;
+
+		/* Create SQ's CQ */
+		cq = &apc->tx_qp[i]->tx_cq;
+		cq->type = MANA_CQ_TYPE_TX;
+
+		cq->txq = txq;
+
+		memset(&spec, 0, sizeof(spec));
+		spec.type = GDMA_CQ;
+		spec.monitor_avl_buf = false;
+		spec.queue_size = cq_size;
+		spec.cq.callback = mana_schedule_napi;
+		spec.cq.parent_eq = apc->eqs[i].eq;
+		spec.cq.context = cq;
+		err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq);
+		if (err)
+			goto out;
+
+		memset(&wq_spec, 0, sizeof(wq_spec));
+		memset(&cq_spec, 0, sizeof(cq_spec));
+
+		wq_spec.gdma_region = txq->gdma_sq->mem_info.dma_region_handle;
+		wq_spec.queue_size = txq->gdma_sq->queue_size;
+
+		cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle;
+		cq_spec.queue_size = cq->gdma_cq->queue_size;
+		cq_spec.modr_ctx_id = 0;
+		cq_spec.attached_eq = cq->gdma_cq->cq.parent->id;
+
+		err = mana_create_wq_obj(apc, apc->port_handle, GDMA_SQ,
+					 &wq_spec, &cq_spec,
+					 &apc->tx_qp[i]->tx_object);
+
+		if (err)
+			goto out;
+
+		txq->gdma_sq->id = wq_spec.queue_index;
+		cq->gdma_cq->id = cq_spec.queue_index;
+
+		txq->gdma_sq->mem_info.dma_region_handle =
+			GDMA_INVALID_DMA_REGION;
+		cq->gdma_cq->mem_info.dma_region_handle =
+			GDMA_INVALID_DMA_REGION;
+
+		txq->gdma_txq_id = txq->gdma_sq->id;
+
+		cq->gdma_id = cq->gdma_cq->id;
+
+		if (WARN_ON(cq->gdma_id >= gc->max_num_cqs)) {
+			err = -EINVAL;
+			goto out;
+		}
+
+		gc->cq_table[cq->gdma_id] = cq->gdma_cq;
+
+		mana_create_txq_debugfs(apc, i);
+
+		set_bit(NAPI_STATE_NO_BUSY_POLL, &cq->napi.state);
+		netif_napi_add_locked(net, &cq->napi, mana_poll);
+		napi_enable_locked(&cq->napi);
+		txq->napi_initialized = true;
+
+		mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT);
+	}
+
+	return 0;
+out:
+	netdev_err(net, "Failed to create %d TX queues, %d\n",
+		   apc->num_queues, err);
+	mana_destroy_txq(apc);
+	return err;
+}
+
+static void mana_destroy_rxq(struct mana_port_context *apc,
+			     struct mana_rxq *rxq, bool napi_initialized)
+
+{
+	struct gdma_context *gc = apc->ac->gdma_dev->gdma_context;
+	struct mana_recv_buf_oob *rx_oob;
+	struct device *dev = gc->dev;
+	struct napi_struct *napi;
+	struct page *page;
+	int i;
+
+	if (!rxq)
+		return;
+
+	debugfs_remove_recursive(rxq->mana_rx_debugfs);
+	rxq->mana_rx_debugfs = NULL;
+
+	napi = &rxq->rx_cq.napi;
+
+	if (napi_initialized) {
+		napi_synchronize(napi);
+
+		napi_disable_locked(napi);
+		netif_napi_del_locked(napi);
+	}
+
+	if (xdp_rxq_info_is_reg(&rxq->xdp_rxq))
+		xdp_rxq_info_unreg(&rxq->xdp_rxq);
+
+	if (rxq->rxobj != INVALID_MANA_HANDLE)
+		mana_destroy_wq_obj(apc, GDMA_RQ, rxq->rxobj);
+
+	mana_deinit_cq(apc, &rxq->rx_cq);
+
+	if (rxq->xdp_save_va)
+		put_page(virt_to_head_page(rxq->xdp_save_va));
+
+	for (i = 0; i < rxq->num_rx_buf; i++) {
+		rx_oob = &rxq->rx_oobs[i];
+
+		if (!rx_oob->buf_va)
+			continue;
+
+		page = virt_to_head_page(rx_oob->buf_va);
+
+		if (rxq->frag_count == 1 || !rx_oob->from_pool) {
+			dma_unmap_single(dev, rx_oob->sgl[0].address,
+					 rx_oob->sgl[0].size, DMA_FROM_DEVICE);
+			mana_put_rx_page(rxq, page, rx_oob->from_pool);
+		} else {
+			page_pool_free_va(rxq->page_pool, rx_oob->buf_va, true);
+		}
+
+		rx_oob->buf_va = NULL;
+	}
+
+	page_pool_destroy(rxq->page_pool);
+
+	if (rxq->gdma_rq)
+		mana_gd_destroy_queue(gc, rxq->gdma_rq);
+
+	kvfree(rxq);
+}
+
+static int mana_fill_rx_oob(struct mana_recv_buf_oob *rx_oob, u32 mem_key,
+			    struct mana_rxq *rxq, struct device *dev)
+{
+	struct mana_port_context *mpc = netdev_priv(rxq->ndev);
+	bool from_pool = false;
+	dma_addr_t da;
+	void *va;
+
+	if (mpc->rxbufs_pre)
+		va = mana_get_rxbuf_pre(rxq, &da);
+	else
+		va = mana_get_rxfrag(rxq, dev, &da, &from_pool);
+
+	if (!va)
+		return -ENOMEM;
+
+	rx_oob->buf_va = va;
+	rx_oob->from_pool = from_pool;
+
+	rx_oob->sgl[0].address = da;
+	rx_oob->sgl[0].size = rxq->datasize;
+	rx_oob->sgl[0].mem_key = mem_key;
+
+	return 0;
+}
+
+#define MANA_WQE_HEADER_SIZE 16
+#define MANA_WQE_SGE_SIZE 16
+
+static int mana_alloc_rx_wqe(struct mana_port_context *apc,
+			     struct mana_rxq *rxq, u32 *rxq_size, u32 *cq_size)
+{
+	struct gdma_context *gc = apc->ac->gdma_dev->gdma_context;
+	struct mana_recv_buf_oob *rx_oob;
+	struct device *dev = gc->dev;
+	u32 buf_idx;
+	int ret;
+
+	WARN_ON(rxq->datasize == 0);
+
+	*rxq_size = 0;
+	*cq_size = 0;
+
+	for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) {
+		rx_oob = &rxq->rx_oobs[buf_idx];
+		memset(rx_oob, 0, sizeof(*rx_oob));
+
+		rx_oob->num_sge = 1;
+
+		ret = mana_fill_rx_oob(rx_oob, apc->ac->gdma_dev->gpa_mkey, rxq,
+				       dev);
+		if (ret)
+			return ret;
+
+		rx_oob->wqe_req.sgl = rx_oob->sgl;
+		rx_oob->wqe_req.num_sge = rx_oob->num_sge;
+		rx_oob->wqe_req.inline_oob_size = 0;
+		rx_oob->wqe_req.inline_oob_data = NULL;
+		rx_oob->wqe_req.flags = 0;
+		rx_oob->wqe_req.client_data_unit = 0;
+
+		*rxq_size += ALIGN(MANA_WQE_HEADER_SIZE +
+				   MANA_WQE_SGE_SIZE * rx_oob->num_sge, 32);
+		*cq_size += COMP_ENTRY_SIZE;
+	}
+
+	return 0;
+}
+
+static int mana_push_wqe(struct mana_rxq *rxq)
+{
+	struct mana_recv_buf_oob *rx_oob;
+	u32 buf_idx;
+	int err;
+
+	for (buf_idx = 0; buf_idx < rxq->num_rx_buf; buf_idx++) {
+		rx_oob = &rxq->rx_oobs[buf_idx];
+
+		err = mana_gd_post_and_ring(rxq->gdma_rq, &rx_oob->wqe_req,
+					    &rx_oob->wqe_inf);
+		if (err)
+			return -ENOSPC;
+	}
+
+	return 0;
+}
+
+static int mana_create_page_pool(struct mana_rxq *rxq, struct gdma_context *gc)
+{
+	struct mana_port_context *mpc = netdev_priv(rxq->ndev);
+	struct page_pool_params pprm = {};
+	int ret;
+
+	pprm.pool_size = mpc->rx_queue_size / rxq->frag_count + 1;
+	pprm.nid = gc->numa_node;
+	pprm.napi = &rxq->rx_cq.napi;
+	pprm.netdev = rxq->ndev;
+	pprm.order = get_order(rxq->alloc_size);
+	pprm.queue_idx = rxq->rxq_idx;
+	pprm.dev = gc->dev;
+
+	/* Let the page pool do the dma map when page sharing with multiple
+	 * fragments enabled for rx buffers.
+	 */
+	if (rxq->frag_count > 1) {
+		pprm.flags =  PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV;
+		pprm.max_len = PAGE_SIZE;
+		pprm.dma_dir = DMA_FROM_DEVICE;
+	}
+
+	rxq->page_pool = page_pool_create(&pprm);
+
+	if (IS_ERR(rxq->page_pool)) {
+		ret = PTR_ERR(rxq->page_pool);
+		rxq->page_pool = NULL;
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct mana_rxq *mana_create_rxq(struct mana_port_context *apc,
+					u32 rxq_idx, struct mana_eq *eq,
+					struct net_device *ndev)
+{
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+	struct mana_obj_spec wq_spec;
+	struct mana_obj_spec cq_spec;
+	struct gdma_queue_spec spec;
+	struct mana_cq *cq = NULL;
+	struct gdma_context *gc;
+	u32 cq_size, rq_size;
+	struct mana_rxq *rxq;
+	int err;
+
+	gc = gd->gdma_context;
+
+	rxq = kvzalloc_flex(*rxq, rx_oobs, apc->rx_queue_size);
+	if (!rxq)
+		return NULL;
+
+	rxq->ndev = ndev;
+	rxq->num_rx_buf = apc->rx_queue_size;
+	rxq->rxq_idx = rxq_idx;
+	rxq->rxobj = INVALID_MANA_HANDLE;
+
+	mana_get_rxbuf_cfg(apc, ndev->mtu, &rxq->datasize, &rxq->alloc_size,
+			   &rxq->headroom, &rxq->frag_count);
+	/* Create page pool for RX queue */
+	err = mana_create_page_pool(rxq, gc);
+	if (err) {
+		netdev_err(ndev, "Create page pool err:%d\n", err);
+		goto out;
+	}
+
+	err = mana_alloc_rx_wqe(apc, rxq, &rq_size, &cq_size);
+	if (err)
+		goto out;
+
+	rq_size = MANA_PAGE_ALIGN(rq_size);
+	cq_size = MANA_PAGE_ALIGN(cq_size);
+
+	/* Create RQ */
+	memset(&spec, 0, sizeof(spec));
+	spec.type = GDMA_RQ;
+	spec.monitor_avl_buf = true;
+	spec.queue_size = rq_size;
+	err = mana_gd_create_mana_wq_cq(gd, &spec, &rxq->gdma_rq);
+	if (err)
+		goto out;
+
+	/* Create RQ's CQ */
+	cq = &rxq->rx_cq;
+	cq->type = MANA_CQ_TYPE_RX;
+	cq->rxq = rxq;
+
+	memset(&spec, 0, sizeof(spec));
+	spec.type = GDMA_CQ;
+	spec.monitor_avl_buf = false;
+	spec.queue_size = cq_size;
+	spec.cq.callback = mana_schedule_napi;
+	spec.cq.parent_eq = eq->eq;
+	spec.cq.context = cq;
+	err = mana_gd_create_mana_wq_cq(gd, &spec, &cq->gdma_cq);
+	if (err)
+		goto out;
+
+	memset(&wq_spec, 0, sizeof(wq_spec));
+	memset(&cq_spec, 0, sizeof(cq_spec));
+	wq_spec.gdma_region = rxq->gdma_rq->mem_info.dma_region_handle;
+	wq_spec.queue_size = rxq->gdma_rq->queue_size;
+
+	cq_spec.gdma_region = cq->gdma_cq->mem_info.dma_region_handle;
+	cq_spec.queue_size = cq->gdma_cq->queue_size;
+	cq_spec.modr_ctx_id = 0;
+	cq_spec.attached_eq = cq->gdma_cq->cq.parent->id;
+
+	err = mana_create_wq_obj(apc, apc->port_handle, GDMA_RQ,
+				 &wq_spec, &cq_spec, &rxq->rxobj);
+	if (err)
+		goto out;
+
+	rxq->gdma_rq->id = wq_spec.queue_index;
+	cq->gdma_cq->id = cq_spec.queue_index;
+
+	rxq->gdma_rq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION;
+	cq->gdma_cq->mem_info.dma_region_handle = GDMA_INVALID_DMA_REGION;
+
+	rxq->gdma_id = rxq->gdma_rq->id;
+	cq->gdma_id = cq->gdma_cq->id;
+
+	err = mana_push_wqe(rxq);
+	if (err)
+		goto out;
+
+	if (WARN_ON(cq->gdma_id >= gc->max_num_cqs)) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	gc->cq_table[cq->gdma_id] = cq->gdma_cq;
+
+	netif_napi_add_weight_locked(ndev, &cq->napi, mana_poll, 1);
+
+	WARN_ON(xdp_rxq_info_reg(&rxq->xdp_rxq, ndev, rxq_idx,
+				 cq->napi.napi_id));
+	WARN_ON(xdp_rxq_info_reg_mem_model(&rxq->xdp_rxq, MEM_TYPE_PAGE_POOL,
+					   rxq->page_pool));
+
+	napi_enable_locked(&cq->napi);
+
+	mana_gd_ring_cq(cq->gdma_cq, SET_ARM_BIT);
+out:
+	if (!err)
+		return rxq;
+
+	netdev_err(ndev, "Failed to create RXQ: err = %d\n", err);
+
+	mana_destroy_rxq(apc, rxq, false);
+
+	return NULL;
+}
+
+static void mana_create_rxq_debugfs(struct mana_port_context *apc, int idx)
+{
+	struct mana_rxq *rxq;
+	char qnum[32];
+
+	rxq = apc->rxqs[idx];
+
+	sprintf(qnum, "RX-%d", idx);
+	rxq->mana_rx_debugfs = debugfs_create_dir(qnum, apc->mana_port_debugfs);
+	debugfs_create_u32("rq_head", 0400, rxq->mana_rx_debugfs, &rxq->gdma_rq->head);
+	debugfs_create_u32("rq_tail", 0400, rxq->mana_rx_debugfs, &rxq->gdma_rq->tail);
+	debugfs_create_u32("rq_nbuf", 0400, rxq->mana_rx_debugfs, &rxq->num_rx_buf);
+	debugfs_create_u32("cq_head", 0400, rxq->mana_rx_debugfs,
+			   &rxq->rx_cq.gdma_cq->head);
+	debugfs_create_u32("cq_tail", 0400, rxq->mana_rx_debugfs,
+			   &rxq->rx_cq.gdma_cq->tail);
+	debugfs_create_u32("cq_budget", 0400, rxq->mana_rx_debugfs, &rxq->rx_cq.budget);
+	debugfs_create_file("rxq_dump", 0400, rxq->mana_rx_debugfs, rxq->gdma_rq, &mana_dbg_q_fops);
+	debugfs_create_file("cq_dump", 0400, rxq->mana_rx_debugfs, rxq->rx_cq.gdma_cq,
+			    &mana_dbg_q_fops);
+}
+
+static int mana_add_rx_queues(struct mana_port_context *apc,
+			      struct net_device *ndev)
+{
+	struct mana_rxq *rxq;
+	int err = 0;
+	int i;
+
+	for (i = 0; i < apc->num_queues; i++) {
+		rxq = mana_create_rxq(apc, i, &apc->eqs[i], ndev);
+		if (!rxq) {
+			err = -ENOMEM;
+			netdev_err(ndev, "Failed to create rxq %d : %d\n", i, err);
+			goto out;
+		}
+
+		u64_stats_init(&rxq->stats.syncp);
+
+		apc->rxqs[i] = rxq;
+
+		mana_create_rxq_debugfs(apc, i);
+	}
+
+	apc->default_rxobj = apc->rxqs[0]->rxobj;
+out:
+	return err;
+}
+
+static void mana_destroy_rxqs(struct mana_port_context *apc)
+{
+	struct mana_rxq *rxq;
+	u32 rxq_idx;
+
+	if (apc->rxqs) {
+
+		for (rxq_idx = 0; rxq_idx < apc->num_queues; rxq_idx++) {
+			rxq = apc->rxqs[rxq_idx];
+			if (!rxq)
+				continue;
+
+			mana_destroy_rxq(apc, rxq, true);
+			apc->rxqs[rxq_idx] = NULL;
+		}
+	}
+}
+
+static void mana_destroy_vport(struct mana_port_context *apc)
+{
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+
+	mana_uncfg_vport(apc);
+
+	if (gd->gdma_context->is_pf && !apc->ac->bm_hostmode)
+		mana_pf_deregister_hw_vport(apc);
+}
+
+static int mana_create_vport(struct mana_port_context *apc,
+			     struct net_device *net)
+{
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+	int err;
+
+	apc->default_rxobj = INVALID_MANA_HANDLE;
+
+	if (gd->gdma_context->is_pf && !apc->ac->bm_hostmode) {
+		err = mana_pf_register_hw_vport(apc);
+		if (err)
+			return err;
+	}
+
+	err = mana_cfg_vport(apc, gd->pdid, gd->doorbell, false);
+	if (err) {
+		if (gd->gdma_context->is_pf && !apc->ac->bm_hostmode)
+			mana_pf_deregister_hw_vport(apc);
+		return err;
+	}
+
+	return 0;
+}
+
+static int mana_rss_table_alloc(struct mana_port_context *apc)
+{
+	if (!apc->indir_table_sz) {
+		netdev_err(apc->ndev,
+			   "Indirection table size not set for vPort %d\n",
+			   apc->port_idx);
+		return -EINVAL;
+	}
+
+	apc->indir_table = kcalloc(apc->indir_table_sz, sizeof(u32), GFP_KERNEL);
+	if (!apc->indir_table)
+		return -ENOMEM;
+
+	apc->rxobj_table = kzalloc_objs(mana_handle_t, apc->indir_table_sz);
+	if (!apc->rxobj_table) {
+		kfree(apc->indir_table);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static void mana_rss_table_init(struct mana_port_context *apc)
+{
+	int i;
+
+	for (i = 0; i < apc->indir_table_sz; i++)
+		apc->indir_table[i] =
+			ethtool_rxfh_indir_default(i, apc->num_queues);
+}
+
+int mana_disable_vport_rx(struct mana_port_context *apc)
+{
+	return mana_cfg_vport_steering(apc, TRI_STATE_FALSE, false, false,
+				       false);
+}
+EXPORT_SYMBOL_NS(mana_disable_vport_rx, "NET_MANA");
+
+int mana_config_rss(struct mana_port_context *apc, enum TRI_STATE rx,
+		    bool update_hash, bool update_tab)
+{
+	u32 queue_idx;
+	int err;
+	int i;
+
+	if (update_tab) {
+		for (i = 0; i < apc->indir_table_sz; i++) {
+			queue_idx = apc->indir_table[i];
+			apc->rxobj_table[i] = apc->rxqs[queue_idx]->rxobj;
+		}
+	}
+
+	err = mana_cfg_vport_steering(apc, rx, true, update_hash, update_tab);
+	if (err)
+		return err;
+
+	mana_fence_rqs(apc);
+
+	return 0;
+}
+
+int mana_query_gf_stats(struct mana_context *ac)
+{
+	struct gdma_context *gc = ac->gdma_dev->gdma_context;
+	struct mana_query_gf_stat_resp resp = {};
+	struct mana_query_gf_stat_req req = {};
+	struct device *dev = gc->dev;
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_GF_STAT,
+			     sizeof(req), sizeof(resp));
+	req.hdr.resp.msg_version = GDMA_MESSAGE_V2;
+	req.req_stats = STATISTICS_FLAGS_RX_DISCARDS_NO_WQE |
+			STATISTICS_FLAGS_RX_ERRORS_VPORT_DISABLED |
+			STATISTICS_FLAGS_HC_RX_BYTES |
+			STATISTICS_FLAGS_HC_RX_UCAST_PACKETS |
+			STATISTICS_FLAGS_HC_RX_UCAST_BYTES |
+			STATISTICS_FLAGS_HC_RX_MCAST_PACKETS |
+			STATISTICS_FLAGS_HC_RX_MCAST_BYTES |
+			STATISTICS_FLAGS_HC_RX_BCAST_PACKETS |
+			STATISTICS_FLAGS_HC_RX_BCAST_BYTES |
+			STATISTICS_FLAGS_TX_ERRORS_GF_DISABLED |
+			STATISTICS_FLAGS_TX_ERRORS_VPORT_DISABLED |
+			STATISTICS_FLAGS_TX_ERRORS_INVAL_VPORT_OFFSET_PACKETS |
+			STATISTICS_FLAGS_TX_ERRORS_VLAN_ENFORCEMENT |
+			STATISTICS_FLAGS_TX_ERRORS_ETH_TYPE_ENFORCEMENT |
+			STATISTICS_FLAGS_TX_ERRORS_SA_ENFORCEMENT |
+			STATISTICS_FLAGS_TX_ERRORS_SQPDID_ENFORCEMENT |
+			STATISTICS_FLAGS_TX_ERRORS_CQPDID_ENFORCEMENT |
+			STATISTICS_FLAGS_TX_ERRORS_MTU_VIOLATION |
+			STATISTICS_FLAGS_TX_ERRORS_INVALID_OOB |
+			STATISTICS_FLAGS_HC_TX_BYTES |
+			STATISTICS_FLAGS_HC_TX_UCAST_PACKETS |
+			STATISTICS_FLAGS_HC_TX_UCAST_BYTES |
+			STATISTICS_FLAGS_HC_TX_MCAST_PACKETS |
+			STATISTICS_FLAGS_HC_TX_MCAST_BYTES |
+			STATISTICS_FLAGS_HC_TX_BCAST_PACKETS |
+			STATISTICS_FLAGS_HC_TX_BCAST_BYTES |
+			STATISTICS_FLAGS_TX_ERRORS_GDMA_ERROR;
+
+	err = mana_send_request(ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err) {
+		dev_err(dev, "Failed to query GF stats: %d\n", err);
+		return err;
+	}
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_GF_STAT,
+				   sizeof(resp));
+	if (err || resp.hdr.status) {
+		dev_err(dev, "Failed to query GF stats: %d, 0x%x\n", err,
+			resp.hdr.status);
+		return err;
+	}
+
+	ac->hc_stats.hc_rx_discards_no_wqe = resp.rx_discards_nowqe;
+	ac->hc_stats.hc_rx_err_vport_disabled = resp.rx_err_vport_disabled;
+	ac->hc_stats.hc_rx_bytes = resp.hc_rx_bytes;
+	ac->hc_stats.hc_rx_ucast_pkts = resp.hc_rx_ucast_pkts;
+	ac->hc_stats.hc_rx_ucast_bytes = resp.hc_rx_ucast_bytes;
+	ac->hc_stats.hc_rx_bcast_pkts = resp.hc_rx_bcast_pkts;
+	ac->hc_stats.hc_rx_bcast_bytes = resp.hc_rx_bcast_bytes;
+	ac->hc_stats.hc_rx_mcast_pkts = resp.hc_rx_mcast_pkts;
+	ac->hc_stats.hc_rx_mcast_bytes = resp.hc_rx_mcast_bytes;
+	ac->hc_stats.hc_tx_err_gf_disabled = resp.tx_err_gf_disabled;
+	ac->hc_stats.hc_tx_err_vport_disabled = resp.tx_err_vport_disabled;
+	ac->hc_stats.hc_tx_err_inval_vportoffset_pkt =
+					     resp.tx_err_inval_vport_offset_pkt;
+	ac->hc_stats.hc_tx_err_vlan_enforcement =
+					     resp.tx_err_vlan_enforcement;
+	ac->hc_stats.hc_tx_err_eth_type_enforcement =
+					     resp.tx_err_ethtype_enforcement;
+	ac->hc_stats.hc_tx_err_sa_enforcement = resp.tx_err_SA_enforcement;
+	ac->hc_stats.hc_tx_err_sqpdid_enforcement =
+					     resp.tx_err_SQPDID_enforcement;
+	ac->hc_stats.hc_tx_err_cqpdid_enforcement =
+					     resp.tx_err_CQPDID_enforcement;
+	ac->hc_stats.hc_tx_err_mtu_violation = resp.tx_err_mtu_violation;
+	ac->hc_stats.hc_tx_err_inval_oob = resp.tx_err_inval_oob;
+	ac->hc_stats.hc_tx_bytes = resp.hc_tx_bytes;
+	ac->hc_stats.hc_tx_ucast_pkts = resp.hc_tx_ucast_pkts;
+	ac->hc_stats.hc_tx_ucast_bytes = resp.hc_tx_ucast_bytes;
+	ac->hc_stats.hc_tx_bcast_pkts = resp.hc_tx_bcast_pkts;
+	ac->hc_stats.hc_tx_bcast_bytes = resp.hc_tx_bcast_bytes;
+	ac->hc_stats.hc_tx_mcast_pkts = resp.hc_tx_mcast_pkts;
+	ac->hc_stats.hc_tx_mcast_bytes = resp.hc_tx_mcast_bytes;
+	ac->hc_stats.hc_tx_err_gdma = resp.tx_err_gdma;
+
+	return 0;
+}
+
+void mana_query_phy_stats(struct mana_port_context *apc)
+{
+	struct mana_query_phy_stat_resp resp = {};
+	struct mana_query_phy_stat_req req = {};
+	struct net_device *ndev = apc->ndev;
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_QUERY_PHY_STAT,
+			     sizeof(req), sizeof(resp));
+	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
+				sizeof(resp));
+	if (err)
+		return;
+
+	err = mana_verify_resp_hdr(&resp.hdr, MANA_QUERY_PHY_STAT,
+				   sizeof(resp));
+	if (err || resp.hdr.status) {
+		netdev_err(ndev,
+			   "Failed to query PHY stats: %d, resp:0x%x\n",
+				err, resp.hdr.status);
+		return;
+	}
+
+	/* Aggregate drop counters */
+	apc->phy_stats.rx_pkt_drop_phy = resp.rx_pkt_drop_phy;
+	apc->phy_stats.tx_pkt_drop_phy = resp.tx_pkt_drop_phy;
+
+	/* Per TC traffic Counters */
+	apc->phy_stats.rx_pkt_tc0_phy = resp.rx_pkt_tc0_phy;
+	apc->phy_stats.tx_pkt_tc0_phy = resp.tx_pkt_tc0_phy;
+	apc->phy_stats.rx_pkt_tc1_phy = resp.rx_pkt_tc1_phy;
+	apc->phy_stats.tx_pkt_tc1_phy = resp.tx_pkt_tc1_phy;
+	apc->phy_stats.rx_pkt_tc2_phy = resp.rx_pkt_tc2_phy;
+	apc->phy_stats.tx_pkt_tc2_phy = resp.tx_pkt_tc2_phy;
+	apc->phy_stats.rx_pkt_tc3_phy = resp.rx_pkt_tc3_phy;
+	apc->phy_stats.tx_pkt_tc3_phy = resp.tx_pkt_tc3_phy;
+	apc->phy_stats.rx_pkt_tc4_phy = resp.rx_pkt_tc4_phy;
+	apc->phy_stats.tx_pkt_tc4_phy = resp.tx_pkt_tc4_phy;
+	apc->phy_stats.rx_pkt_tc5_phy = resp.rx_pkt_tc5_phy;
+	apc->phy_stats.tx_pkt_tc5_phy = resp.tx_pkt_tc5_phy;
+	apc->phy_stats.rx_pkt_tc6_phy = resp.rx_pkt_tc6_phy;
+	apc->phy_stats.tx_pkt_tc6_phy = resp.tx_pkt_tc6_phy;
+	apc->phy_stats.rx_pkt_tc7_phy = resp.rx_pkt_tc7_phy;
+	apc->phy_stats.tx_pkt_tc7_phy = resp.tx_pkt_tc7_phy;
+
+	/* Per TC byte Counters */
+	apc->phy_stats.rx_byte_tc0_phy = resp.rx_byte_tc0_phy;
+	apc->phy_stats.tx_byte_tc0_phy = resp.tx_byte_tc0_phy;
+	apc->phy_stats.rx_byte_tc1_phy = resp.rx_byte_tc1_phy;
+	apc->phy_stats.tx_byte_tc1_phy = resp.tx_byte_tc1_phy;
+	apc->phy_stats.rx_byte_tc2_phy = resp.rx_byte_tc2_phy;
+	apc->phy_stats.tx_byte_tc2_phy = resp.tx_byte_tc2_phy;
+	apc->phy_stats.rx_byte_tc3_phy = resp.rx_byte_tc3_phy;
+	apc->phy_stats.tx_byte_tc3_phy = resp.tx_byte_tc3_phy;
+	apc->phy_stats.rx_byte_tc4_phy = resp.rx_byte_tc4_phy;
+	apc->phy_stats.tx_byte_tc4_phy = resp.tx_byte_tc4_phy;
+	apc->phy_stats.rx_byte_tc5_phy = resp.rx_byte_tc5_phy;
+	apc->phy_stats.tx_byte_tc5_phy = resp.tx_byte_tc5_phy;
+	apc->phy_stats.rx_byte_tc6_phy = resp.rx_byte_tc6_phy;
+	apc->phy_stats.tx_byte_tc6_phy = resp.tx_byte_tc6_phy;
+	apc->phy_stats.rx_byte_tc7_phy = resp.rx_byte_tc7_phy;
+	apc->phy_stats.tx_byte_tc7_phy = resp.tx_byte_tc7_phy;
+
+	/* Per TC pause Counters */
+	apc->phy_stats.rx_pause_tc0_phy = resp.rx_pause_tc0_phy;
+	apc->phy_stats.tx_pause_tc0_phy = resp.tx_pause_tc0_phy;
+	apc->phy_stats.rx_pause_tc1_phy = resp.rx_pause_tc1_phy;
+	apc->phy_stats.tx_pause_tc1_phy = resp.tx_pause_tc1_phy;
+	apc->phy_stats.rx_pause_tc2_phy = resp.rx_pause_tc2_phy;
+	apc->phy_stats.tx_pause_tc2_phy = resp.tx_pause_tc2_phy;
+	apc->phy_stats.rx_pause_tc3_phy = resp.rx_pause_tc3_phy;
+	apc->phy_stats.tx_pause_tc3_phy = resp.tx_pause_tc3_phy;
+	apc->phy_stats.rx_pause_tc4_phy = resp.rx_pause_tc4_phy;
+	apc->phy_stats.tx_pause_tc4_phy = resp.tx_pause_tc4_phy;
+	apc->phy_stats.rx_pause_tc5_phy = resp.rx_pause_tc5_phy;
+	apc->phy_stats.tx_pause_tc5_phy = resp.tx_pause_tc5_phy;
+	apc->phy_stats.rx_pause_tc6_phy = resp.rx_pause_tc6_phy;
+	apc->phy_stats.tx_pause_tc6_phy = resp.tx_pause_tc6_phy;
+	apc->phy_stats.rx_pause_tc7_phy = resp.rx_pause_tc7_phy;
+	apc->phy_stats.tx_pause_tc7_phy = resp.tx_pause_tc7_phy;
+}
+
+static int mana_init_port(struct net_device *ndev)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+	u32 max_txq, max_rxq, max_queues;
+	int port_idx = apc->port_idx;
+	struct gdma_context *gc;
+	char vport[32];
+	int err;
+
+	err = mana_init_port_context(apc);
+	if (err)
+		return err;
+
+	gc = gd->gdma_context;
+
+	err = mana_query_vport_cfg(apc, port_idx, &max_txq, &max_rxq,
+				   &apc->indir_table_sz);
+	if (err) {
+		netdev_err(ndev, "Failed to query info for vPort %d\n",
+			   port_idx);
+		goto reset_apc;
+	}
+
+	max_queues = min_t(u32, max_txq, max_rxq);
+	if (apc->max_queues > max_queues)
+		apc->max_queues = max_queues;
+	if (apc->max_queues > gc->max_num_queues_vport)
+		apc->max_queues = gc->max_num_queues_vport;
+
+	if (apc->num_queues > apc->max_queues)
+		apc->num_queues = apc->max_queues;
+
+	eth_hw_addr_set(ndev, apc->mac_addr);
+	sprintf(vport, "vport%d", port_idx);
+	apc->mana_port_debugfs = debugfs_create_dir(vport, gc->mana_pci_debugfs);
+
+	debugfs_create_u64("port_handle", 0400, apc->mana_port_debugfs,
+			   &apc->port_handle);
+	debugfs_create_u32("max_sq", 0400, apc->mana_port_debugfs,
+			   &apc->vport_max_sq);
+	debugfs_create_u32("max_rq", 0400, apc->mana_port_debugfs,
+			   &apc->vport_max_rq);
+	debugfs_create_u32("indir_table_sz", 0400, apc->mana_port_debugfs,
+			   &apc->indir_table_sz);
+	debugfs_create_u32("steer_rx", 0400, apc->mana_port_debugfs,
+			   &apc->steer_rx);
+	debugfs_create_u32("steer_rss", 0400, apc->mana_port_debugfs,
+			   &apc->steer_rss);
+	debugfs_create_bool("steer_update_tab", 0400, apc->mana_port_debugfs,
+			    &apc->steer_update_tab);
+	debugfs_create_u32("steer_cqe_coalescing", 0400, apc->mana_port_debugfs,
+			   &apc->steer_cqe_coalescing);
+	debugfs_create_u32("current_speed", 0400, apc->mana_port_debugfs,
+			   &apc->speed);
+	return 0;
+
+reset_apc:
+	mana_cleanup_port_context(apc);
+	return err;
+}
+
+int mana_alloc_queues(struct net_device *ndev)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+	int err;
+
+	err = mana_create_vport(apc, ndev);
+	if (err) {
+		netdev_err(ndev, "Failed to create vPort %u : %d\n",
+			   apc->port_idx, err);
+		return err;
+	}
+
+	err = mana_create_eq(apc);
+	if (err) {
+		netdev_err(ndev, "Failed to create EQ on vPort %u: %d\n",
+			   apc->port_idx, err);
+		goto destroy_vport;
+	}
+
+	err = mana_create_txq(apc, ndev);
+	if (err) {
+		netdev_err(ndev, "Failed to create TXQ on vPort %u: %d\n",
+			   apc->port_idx, err);
+		goto destroy_eq;
+	}
+
+	err = netif_set_real_num_tx_queues(ndev, apc->num_queues);
+	if (err) {
+		netdev_err(ndev,
+			   "netif_set_real_num_tx_queues () failed for ndev with num_queues %u : %d\n",
+			   apc->num_queues, err);
+		goto destroy_txq;
+	}
+
+	err = mana_add_rx_queues(apc, ndev);
+	if (err)
+		goto destroy_rxq;
+
+	apc->rss_state = apc->num_queues > 1 ? TRI_STATE_TRUE : TRI_STATE_FALSE;
+
+	err = netif_set_real_num_rx_queues(ndev, apc->num_queues);
+	if (err) {
+		netdev_err(ndev,
+			   "netif_set_real_num_rx_queues () failed for ndev with num_queues %u : %d\n",
+			   apc->num_queues, err);
+		goto destroy_rxq;
+	}
+
+	mana_rss_table_init(apc);
+
+	err = mana_config_rss(apc, TRI_STATE_TRUE, true, true);
+	if (err) {
+		netdev_err(ndev, "Failed to configure RSS table: %d\n", err);
+		goto destroy_rxq;
+	}
+
+	if (gd->gdma_context->is_pf && !apc->ac->bm_hostmode) {
+		err = mana_pf_register_filter(apc);
+		if (err)
+			goto destroy_rxq;
+	}
+
+	mana_chn_setxdp(apc, mana_xdp_get(apc));
+
+	return 0;
+
+destroy_rxq:
+	mana_destroy_rxqs(apc);
+destroy_txq:
+	mana_destroy_txq(apc);
+destroy_eq:
+	mana_destroy_eq(apc);
+destroy_vport:
+	mana_destroy_vport(apc);
+	return err;
+}
+
+int mana_attach(struct net_device *ndev)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	int err;
+
+	ASSERT_RTNL();
+
+	err = mana_init_port(ndev);
+	if (err)
+		return err;
+
+	if (apc->port_st_save) {
+		err = mana_alloc_queues(ndev);
+		if (err) {
+			mana_cleanup_port_context(apc);
+			return err;
+		}
+	}
+
+	apc->port_is_up = apc->port_st_save;
+
+	/* Ensure port state updated before txq state */
+	smp_wmb();
+
+	netif_device_attach(ndev);
+
+	return 0;
+}
+
+static int mana_dealloc_queues(struct net_device *ndev)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	unsigned long timeout = jiffies + 120 * HZ;
+	struct gdma_dev *gd = apc->ac->gdma_dev;
+	struct mana_txq *txq;
+	struct sk_buff *skb;
+	int i, err;
+	u32 tsleep;
+
+	if (apc->port_is_up)
+		return -EINVAL;
+
+	if (apc->rxqs)
+		mana_chn_setxdp(apc, NULL);
+
+	if (gd->gdma_context->is_pf && !apc->ac->bm_hostmode)
+		mana_pf_deregister_filter(apc);
+
+	/* No packet can be transmitted now since apc->port_is_up is false.
+	 * There is still a tiny chance that mana_poll_tx_cq() can re-enable
+	 * a txq because it may not timely see apc->port_is_up being cleared
+	 * to false, but it doesn't matter since mana_start_xmit() drops any
+	 * new packets due to apc->port_is_up being false.
+	 *
+	 * Drain all the in-flight TX packets.
+	 * A timeout of 120 seconds for all the queues is used.
+	 * This will break the while loop when h/w is not responding.
+	 * This value of 120 has been decided here considering max
+	 * number of queues.
+	 */
+
+	if (apc->tx_qp) {
+		for (i = 0; i < apc->num_queues; i++) {
+			txq = &apc->tx_qp[i]->txq;
+			tsleep = 1000;
+			while (atomic_read(&txq->pending_sends) > 0 &&
+			       time_before(jiffies, timeout)) {
+				usleep_range(tsleep, tsleep + 1000);
+				tsleep <<= 1;
+			}
+			if (atomic_read(&txq->pending_sends)) {
+				err =
+				    pcie_flr(to_pci_dev(gd->gdma_context->dev));
+				if (err) {
+					netdev_err(ndev, "flr failed %d with %d pkts pending in txq %u\n",
+						   err,
+					    atomic_read(&txq->pending_sends),
+					    txq->gdma_txq_id);
+				}
+				break;
+			}
+		}
+
+		for (i = 0; i < apc->num_queues; i++) {
+			txq = &apc->tx_qp[i]->txq;
+			while ((skb = skb_dequeue(&txq->pending_skbs))) {
+				mana_unmap_skb(skb, apc);
+				dev_kfree_skb_any(skb);
+			}
+			atomic_set(&txq->pending_sends, 0);
+		}
+	}
+
+	/* We're 100% sure the queues can no longer be woken up, because
+	 * we're sure now mana_poll_tx_cq() can't be running.
+	 */
+
+	apc->rss_state = TRI_STATE_FALSE;
+	err = mana_disable_vport_rx(apc);
+	if (err && mana_en_need_log(apc, err))
+		netdev_err(ndev, "Failed to disable vPort: %d\n", err);
+
+	mana_fence_rqs(apc);
+
+	/* Even in err case, still need to cleanup the vPort */
+	mana_destroy_rxqs(apc);
+	mana_destroy_txq(apc);
+	mana_destroy_eq(apc);
+	mana_destroy_vport(apc);
+
+	return 0;
+}
+
+int mana_detach(struct net_device *ndev, bool from_close)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	int err;
+
+	ASSERT_RTNL();
+
+	/* If already detached (indicates detach succeeded but attach failed
+	 * previously). Now skip mana detach and just retry mana_attach.
+	 */
+	if (!from_close && !netif_device_present(ndev))
+		return 0;
+
+	apc->port_st_save = apc->port_is_up;
+	apc->port_is_up = false;
+
+	/* Ensure port state updated before txq state */
+	smp_wmb();
+
+	netif_tx_disable(ndev);
+
+	if (apc->port_st_save) {
+		err = mana_dealloc_queues(ndev);
+		if (err) {
+			netdev_err(ndev, "%s failed to deallocate queues: %d\n", __func__, err);
+			return err;
+		}
+	}
+
+	if (!from_close) {
+		netif_device_detach(ndev);
+		mana_cleanup_port_context(apc);
+	}
+
+	return 0;
+}
+
+static int mana_probe_port(struct mana_context *ac, int port_idx,
+			   struct net_device **ndev_storage)
+{
+	struct gdma_context *gc = ac->gdma_dev->gdma_context;
+	struct mana_port_context *apc;
+	struct net_device *ndev;
+	int err;
+
+	ndev = alloc_etherdev_mq(sizeof(struct mana_port_context),
+				 gc->max_num_queues_vport);
+	if (!ndev)
+		return -ENOMEM;
+
+	*ndev_storage = ndev;
+
+	apc = netdev_priv(ndev);
+	apc->ac = ac;
+	apc->ndev = ndev;
+	apc->max_queues = gc->max_num_queues_vport;
+	/* Use MANA_DEF_NUM_QUEUES as default, still honoring the HW limit */
+	apc->num_queues = min(gc->max_num_queues_vport, MANA_DEF_NUM_QUEUES);
+	apc->tx_queue_size = DEF_TX_BUFFERS_PER_QUEUE;
+	apc->rx_queue_size = DEF_RX_BUFFERS_PER_QUEUE;
+	apc->port_handle = INVALID_MANA_HANDLE;
+	apc->pf_filter_handle = INVALID_MANA_HANDLE;
+	apc->port_idx = port_idx;
+	apc->link_cfg_error = 1;
+	apc->cqe_coalescing_enable = 0;
+
+	mutex_init(&apc->vport_mutex);
+	apc->vport_use_count = 0;
+
+	ndev->netdev_ops = &mana_devops;
+	ndev->ethtool_ops = &mana_ethtool_ops;
+	ndev->mtu = ETH_DATA_LEN;
+	ndev->max_mtu = gc->adapter_mtu - ETH_HLEN;
+	ndev->min_mtu = ETH_MIN_MTU;
+	ndev->needed_headroom = MANA_HEADROOM;
+	ndev->dev_port = port_idx;
+	/* Recommended timeout based on HW FPGA re-config scenario. */
+	ndev->watchdog_timeo = 15 * HZ;
+	SET_NETDEV_DEV(ndev, gc->dev);
+
+	netif_set_tso_max_size(ndev, GSO_MAX_SIZE);
+
+	netif_carrier_off(ndev);
+
+	netdev_rss_key_fill(apc->hashkey, MANA_HASH_KEY_SIZE);
+
+	err = mana_init_port(ndev);
+	if (err)
+		goto free_net;
+
+	err = mana_rss_table_alloc(apc);
+	if (err)
+		goto reset_apc;
+
+	/* Initialize the per port queue reset work.*/
+	INIT_WORK(&apc->queue_reset_work,
+		  mana_per_port_queue_reset_work_handler);
+
+	netdev_lockdep_set_classes(ndev);
+
+	ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+	ndev->hw_features |= NETIF_F_RXCSUM;
+	ndev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
+	ndev->hw_features |= NETIF_F_RXHASH;
+	ndev->features = ndev->hw_features | NETIF_F_HW_VLAN_CTAG_TX |
+			 NETIF_F_HW_VLAN_CTAG_RX;
+	ndev->vlan_features = ndev->features;
+	xdp_set_features_flag(ndev, NETDEV_XDP_ACT_BASIC |
+			      NETDEV_XDP_ACT_REDIRECT |
+			      NETDEV_XDP_ACT_NDO_XMIT);
+
+	err = register_netdev(ndev);
+	if (err) {
+		netdev_err(ndev, "Unable to register netdev.\n");
+		goto free_indir;
+	}
+
+	netif_carrier_on(ndev);
+
+	return 0;
+
+free_indir:
+	mana_cleanup_indir_table(apc);
+reset_apc:
+	mana_cleanup_port_context(apc);
+free_net:
+	*ndev_storage = NULL;
+	netdev_err(ndev, "Failed to probe vPort %d: %d\n", port_idx, err);
+	free_netdev(ndev);
+	return err;
+}
+
+static void adev_release(struct device *dev)
+{
+	struct mana_adev *madev = container_of(dev, struct mana_adev, adev.dev);
+
+	kfree(madev);
+}
+
+static void remove_adev(struct gdma_dev *gd)
+{
+	struct auxiliary_device *adev = gd->adev;
+	int id = adev->id;
+
+	auxiliary_device_delete(adev);
+	auxiliary_device_uninit(adev);
+
+	mana_adev_idx_free(id);
+	gd->adev = NULL;
+}
+
+static int add_adev(struct gdma_dev *gd, const char *name)
+{
+	struct auxiliary_device *adev;
+	struct mana_adev *madev;
+	int ret;
+	int id;
+
+	madev = kzalloc_obj(*madev);
+	if (!madev)
+		return -ENOMEM;
+
+	adev = &madev->adev;
+	ret = mana_adev_idx_alloc();
+	if (ret < 0)
+		goto idx_fail;
+	id = ret;
+	adev->id = id;
+
+	adev->name = name;
+	adev->dev.parent = gd->gdma_context->dev;
+	adev->dev.release = adev_release;
+	madev->mdev = gd;
+
+	ret = auxiliary_device_init(adev);
+	if (ret)
+		goto init_fail;
+
+	/* madev is owned by the auxiliary device */
+	madev = NULL;
+	ret = auxiliary_device_add(adev);
+	if (ret)
+		goto add_fail;
+
+	gd->adev = adev;
+	dev_dbg(gd->gdma_context->dev,
+		"Auxiliary device added successfully\n");
+	return 0;
+
+add_fail:
+	auxiliary_device_uninit(adev);
+
+init_fail:
+	mana_adev_idx_free(id);
+
+idx_fail:
+	kfree(madev);
+
+	return ret;
+}
+
+static void mana_rdma_service_handle(struct work_struct *work)
+{
+	struct mana_service_work *serv_work =
+		container_of(work, struct mana_service_work, work);
+	struct gdma_dev *gd = serv_work->gdma_dev;
+	struct device *dev = gd->gdma_context->dev;
+	int ret;
+
+	if (READ_ONCE(gd->rdma_teardown))
+		goto out;
+
+	switch (serv_work->event) {
+	case GDMA_SERVICE_TYPE_RDMA_SUSPEND:
+		if (!gd->adev || gd->is_suspended)
+			break;
+
+		remove_adev(gd);
+		gd->is_suspended = true;
+		break;
+
+	case GDMA_SERVICE_TYPE_RDMA_RESUME:
+		if (!gd->is_suspended)
+			break;
+
+		ret = add_adev(gd, "rdma");
+		if (ret)
+			dev_err(dev, "Failed to add adev on resume: %d\n", ret);
+		else
+			gd->is_suspended = false;
+		break;
+
+	default:
+		dev_warn(dev, "unknown adev service event %u\n",
+			 serv_work->event);
+		break;
+	}
+
+out:
+	kfree(serv_work);
+}
+
+int mana_rdma_service_event(struct gdma_context *gc, enum gdma_service_type event)
+{
+	struct gdma_dev *gd = &gc->mana_ib;
+	struct mana_service_work *serv_work;
+
+	if (gd->dev_id.type != GDMA_DEVICE_MANA_IB) {
+		/* RDMA device is not detected on pci */
+		return 0;
+	}
+
+	serv_work = kzalloc_obj(*serv_work, GFP_ATOMIC);
+	if (!serv_work)
+		return -ENOMEM;
+
+	serv_work->event = event;
+	serv_work->gdma_dev = gd;
+
+	INIT_WORK(&serv_work->work, mana_rdma_service_handle);
+	queue_work(gc->service_wq, &serv_work->work);
+
+	return 0;
+}
+
+#define MANA_GF_STATS_PERIOD (2 * HZ)
+
+static void mana_gf_stats_work_handler(struct work_struct *work)
+{
+	struct mana_context *ac =
+		container_of(to_delayed_work(work), struct mana_context, gf_stats_work);
+	struct gdma_context *gc = ac->gdma_dev->gdma_context;
+	int err;
+
+	err = mana_query_gf_stats(ac);
+	if (err == -ETIMEDOUT) {
+		/* HWC timeout detected - reset stats and stop rescheduling */
+		ac->hwc_timeout_occurred = true;
+		memset(&ac->hc_stats, 0, sizeof(ac->hc_stats));
+		dev_warn(gc->dev,
+			 "Gf stats wk handler: gf stats query timed out.\n");
+		/* As HWC timed out, indicating a faulty HW state and needs a
+		 * reset.
+		 */
+		mana_schedule_serv_work(gc, GDMA_EQE_HWC_RESET_REQUEST);
+		return;
+	}
+	schedule_delayed_work(&ac->gf_stats_work, MANA_GF_STATS_PERIOD);
+}
+
+int mana_probe(struct gdma_dev *gd, bool resuming)
+{
+	struct gdma_context *gc = gd->gdma_context;
+	struct mana_context *ac = gd->driver_data;
+	struct mana_port_context *apc = NULL;
+	struct device *dev = gc->dev;
+	u8 bm_hostmode = 0;
+	u16 num_ports = 0;
+	int err;
+	int i;
+
+	dev_info(dev,
+		 "Microsoft Azure Network Adapter protocol version: %d.%d.%d\n",
+		 MANA_MAJOR_VERSION, MANA_MINOR_VERSION, MANA_MICRO_VERSION);
+
+	err = mana_gd_register_device(gd);
+	if (err)
+		return err;
+
+	if (!resuming) {
+		ac = kzalloc_obj(*ac);
+		if (!ac)
+			return -ENOMEM;
+
+		ac->gdma_dev = gd;
+		gd->driver_data = ac;
+
+		INIT_WORK(&ac->link_change_work, mana_link_state_handle);
+	}
+
+	INIT_DELAYED_WORK(&ac->gf_stats_work, mana_gf_stats_work_handler);
+
+	err = mana_gd_query_device_cfg(gc, MANA_MAJOR_VERSION,
+				       MANA_MINOR_VERSION,
+				       MANA_MICRO_VERSION,
+				       &num_ports, &bm_hostmode);
+	if (err)
+		goto out;
+
+	ac->bm_hostmode = bm_hostmode;
+
+	debugfs_create_u16("adapter-MTU", 0400,
+			   gc->mana_pci_debugfs, &gc->adapter_mtu);
+
+	if (!resuming) {
+		ac->num_ports = num_ports;
+	} else {
+		if (ac->num_ports != num_ports) {
+			dev_err(dev, "The number of vPorts changed: %d->%d\n",
+				ac->num_ports, num_ports);
+			err = -EPROTO;
+			goto out;
+		}
+
+		enable_work(&ac->link_change_work);
+	}
+
+	if (ac->num_ports > MAX_PORTS_IN_MANA_DEV)
+		ac->num_ports = MAX_PORTS_IN_MANA_DEV;
+
+	debugfs_create_u16("num_vports", 0400, gc->mana_pci_debugfs,
+			   &ac->num_ports);
+	debugfs_create_u8("bm_hostmode", 0400, gc->mana_pci_debugfs,
+			  &ac->bm_hostmode);
+
+	ac->per_port_queue_reset_wq =
+		create_singlethread_workqueue("mana_per_port_queue_reset_wq");
+	if (!ac->per_port_queue_reset_wq) {
+		dev_err(dev, "Failed to allocate per port queue reset workqueue\n");
+		err = -ENOMEM;
+		goto out;
+	}
+
+	if (!resuming) {
+		for (i = 0; i < ac->num_ports; i++) {
+			err = mana_probe_port(ac, i, &ac->ports[i]);
+			/* Log the port for which the probe failed, stop probing
+			 * subsequent ports, and skip add_adev.
+			 * mana_remove() will clean up already-probed ports.
+			 */
+			if (err) {
+				dev_err(dev, "Probe Failed for port %d\n", i);
+				break;
+			}
+		}
+	} else {
+		for (i = 0; i < ac->num_ports; i++) {
+			rtnl_lock();
+			apc = netdev_priv(ac->ports[i]);
+			enable_work(&apc->queue_reset_work);
+			netdev_lock(ac->ports[i]);
+			apc->link_cfg_error = 1;
+			netdev_unlock(ac->ports[i]);
+			err = mana_attach(ac->ports[i]);
+			rtnl_unlock();
+			/* Log the port for which the attach failed, stop
+			 * attaching subsequent ports, and skip add_adev.
+			 * mana_remove() will clean up already-attached ports.
+			 */
+			if (err) {
+				dev_err(dev, "Attach Failed for port %d\n", i);
+				break;
+			}
+		}
+	}
+
+	if (!err)
+		err = add_adev(gd, "eth");
+
+	schedule_delayed_work(&ac->gf_stats_work, MANA_GF_STATS_PERIOD);
+
+out:
+	if (err) {
+		mana_remove(gd, false);
+	} else {
+		dev_dbg(dev, "gd=%p, id=%u, num_ports=%d, type=%u, instance=%u\n",
+			gd, gd->dev_id.as_uint32, ac->num_ports,
+			gd->dev_id.type, gd->dev_id.instance);
+		dev_dbg(dev, "%s succeeded\n", __func__);
+	}
+
+	return err;
+}
+
+void mana_remove(struct gdma_dev *gd, bool suspending)
+{
+	struct gdma_context *gc = gd->gdma_context;
+	struct mana_context *ac = gd->driver_data;
+	struct mana_port_context *apc;
+	struct device *dev;
+	struct net_device *ndev;
+	int err;
+	int i;
+
+	if (!gc || !ac)
+		return;
+
+	dev = gc->dev;
+
+	disable_work_sync(&ac->link_change_work);
+	cancel_delayed_work_sync(&ac->gf_stats_work);
+
+	/* adev currently doesn't support suspending, always remove it */
+	if (gd->adev)
+		remove_adev(gd);
+
+	for (i = 0; i < ac->num_ports; i++) {
+		ndev = ac->ports[i];
+		if (!ndev) {
+			if (i == 0)
+				dev_err(dev, "No net device to remove\n");
+			break;
+		}
+
+		apc = netdev_priv(ndev);
+		disable_work_sync(&apc->queue_reset_work);
+
+		/* All cleanup actions should stay after rtnl_lock(), otherwise
+		 * other functions may access partially cleaned up data.
+		 */
+		rtnl_lock();
+
+		err = mana_detach(ndev, false);
+		if (err)
+			netdev_err(ndev, "Failed to detach vPort %d: %d\n",
+				   i, err);
+
+		if (suspending) {
+			/* No need to unregister the ndev. */
+			rtnl_unlock();
+			continue;
+		}
+
+		unregister_netdevice(ndev);
+		mana_cleanup_indir_table(apc);
+
+		rtnl_unlock();
+
+		free_netdev(ndev);
+	}
+
+	if (ac->per_port_queue_reset_wq) {
+		destroy_workqueue(ac->per_port_queue_reset_wq);
+		ac->per_port_queue_reset_wq = NULL;
+	}
+
+	mana_gd_deregister_device(gd);
+
+	if (gc->mana_pci_debugfs) {
+		debugfs_lookup_and_remove("bm_hostmode", gc->mana_pci_debugfs);
+		debugfs_lookup_and_remove("num_vports", gc->mana_pci_debugfs);
+	}
+
+	if (suspending)
+		return;
+
+	gd->driver_data = NULL;
+	gd->gdma_context = NULL;
+	kfree(ac);
+	dev_dbg(dev, "%s succeeded\n", __func__);
+}
+
+int mana_rdma_probe(struct gdma_dev *gd)
+{
+	int err = 0;
+
+	if (gd->dev_id.type != GDMA_DEVICE_MANA_IB) {
+		/* RDMA device is not detected on pci */
+		return err;
+	}
+
+	err = mana_gd_register_device(gd);
+	if (err)
+		return err;
+
+	err = add_adev(gd, "rdma");
+	if (err)
+		mana_gd_deregister_device(gd);
+
+	return err;
+}
+
+void mana_rdma_remove(struct gdma_dev *gd)
+{
+	struct gdma_context *gc = gd->gdma_context;
+
+	if (gd->dev_id.type != GDMA_DEVICE_MANA_IB) {
+		/* RDMA device is not detected on pci */
+		return;
+	}
+
+	WRITE_ONCE(gd->rdma_teardown, true);
+
+	if (gc->service_wq)
+		flush_workqueue(gc->service_wq);
+
+	if (gd->adev)
+		remove_adev(gd);
+
+	mana_gd_deregister_device(gd);
+}
+
+struct net_device *mana_get_primary_netdev(struct mana_context *ac,
+					   u32 port_index,
+					   netdevice_tracker *tracker)
+{
+	struct net_device *ndev;
+
+	if (port_index >= ac->num_ports)
+		return NULL;
+
+	rcu_read_lock();
+
+	/* If mana is used in netvsc, the upper netdevice should be returned. */
+	ndev = netdev_master_upper_dev_get_rcu(ac->ports[port_index]);
+
+	/* If there is no upper device, use the parent Ethernet device */
+	if (!ndev)
+		ndev = ac->ports[port_index];
+
+	netdev_hold(ndev, tracker, GFP_ATOMIC);
+	rcu_read_unlock();
+
+	return ndev;
+}
+EXPORT_SYMBOL_NS(mana_get_primary_netdev, "NET_MANA");
diff --git a/drivers/net/ethernet/microsoft/mana/mana_ethtool.c b/drivers/net/ethernet/microsoft/mana/mana_ethtool.c
new file mode 100644
index 000000000..94e658d07
--- /dev/null
+++ b/drivers/net/ethernet/microsoft/mana/mana_ethtool.c
@@ -0,0 +1,617 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright (c) 2021, Microsoft Corporation. */
+
+#include <linux/inetdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+
+#include <net/mana/mana.h>
+
+struct mana_stats_desc {
+	char name[ETH_GSTRING_LEN];
+	u16 offset;
+};
+
+static const struct mana_stats_desc mana_eth_stats[] = {
+	{"stop_queue", offsetof(struct mana_ethtool_stats, stop_queue)},
+	{"wake_queue", offsetof(struct mana_ethtool_stats, wake_queue)},
+	{"tx_cq_err", offsetof(struct mana_ethtool_stats, tx_cqe_err)},
+	{"tx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
+					tx_cqe_unknown_type)},
+	{"tx_linear_pkt_cnt", offsetof(struct mana_ethtool_stats,
+				       tx_linear_pkt_cnt)},
+	{"rx_cqe_unknown_type", offsetof(struct mana_ethtool_stats,
+					rx_cqe_unknown_type)},
+};
+
+static const struct mana_stats_desc mana_hc_stats[] = {
+	{"hc_rx_discards_no_wqe", offsetof(struct mana_ethtool_hc_stats,
+					   hc_rx_discards_no_wqe)},
+	{"hc_rx_err_vport_disabled", offsetof(struct mana_ethtool_hc_stats,
+					      hc_rx_err_vport_disabled)},
+	{"hc_rx_bytes", offsetof(struct mana_ethtool_hc_stats, hc_rx_bytes)},
+	{"hc_rx_ucast_pkts", offsetof(struct mana_ethtool_hc_stats,
+				      hc_rx_ucast_pkts)},
+	{"hc_rx_ucast_bytes", offsetof(struct mana_ethtool_hc_stats,
+				       hc_rx_ucast_bytes)},
+	{"hc_rx_bcast_pkts", offsetof(struct mana_ethtool_hc_stats,
+				      hc_rx_bcast_pkts)},
+	{"hc_rx_bcast_bytes", offsetof(struct mana_ethtool_hc_stats,
+				       hc_rx_bcast_bytes)},
+	{"hc_rx_mcast_pkts", offsetof(struct mana_ethtool_hc_stats,
+				      hc_rx_mcast_pkts)},
+	{"hc_rx_mcast_bytes", offsetof(struct mana_ethtool_hc_stats,
+				       hc_rx_mcast_bytes)},
+	{"hc_tx_err_gf_disabled", offsetof(struct mana_ethtool_hc_stats,
+					   hc_tx_err_gf_disabled)},
+	{"hc_tx_err_vport_disabled", offsetof(struct mana_ethtool_hc_stats,
+					      hc_tx_err_vport_disabled)},
+	{"hc_tx_err_inval_vportoffset_pkt",
+	 offsetof(struct mana_ethtool_hc_stats,
+		  hc_tx_err_inval_vportoffset_pkt)},
+	{"hc_tx_err_vlan_enforcement", offsetof(struct mana_ethtool_hc_stats,
+						hc_tx_err_vlan_enforcement)},
+	{"hc_tx_err_eth_type_enforcement",
+	 offsetof(struct mana_ethtool_hc_stats, hc_tx_err_eth_type_enforcement)},
+	{"hc_tx_err_sa_enforcement", offsetof(struct mana_ethtool_hc_stats,
+					      hc_tx_err_sa_enforcement)},
+	{"hc_tx_err_sqpdid_enforcement",
+	 offsetof(struct mana_ethtool_hc_stats, hc_tx_err_sqpdid_enforcement)},
+	{"hc_tx_err_cqpdid_enforcement",
+	 offsetof(struct mana_ethtool_hc_stats, hc_tx_err_cqpdid_enforcement)},
+	{"hc_tx_err_mtu_violation", offsetof(struct mana_ethtool_hc_stats,
+					     hc_tx_err_mtu_violation)},
+	{"hc_tx_err_inval_oob", offsetof(struct mana_ethtool_hc_stats,
+					 hc_tx_err_inval_oob)},
+	{"hc_tx_err_gdma", offsetof(struct mana_ethtool_hc_stats,
+				    hc_tx_err_gdma)},
+	{"hc_tx_bytes", offsetof(struct mana_ethtool_hc_stats, hc_tx_bytes)},
+	{"hc_tx_ucast_pkts", offsetof(struct mana_ethtool_hc_stats,
+					hc_tx_ucast_pkts)},
+	{"hc_tx_ucast_bytes", offsetof(struct mana_ethtool_hc_stats,
+					hc_tx_ucast_bytes)},
+	{"hc_tx_bcast_pkts", offsetof(struct mana_ethtool_hc_stats,
+					hc_tx_bcast_pkts)},
+	{"hc_tx_bcast_bytes", offsetof(struct mana_ethtool_hc_stats,
+					hc_tx_bcast_bytes)},
+	{"hc_tx_mcast_pkts", offsetof(struct mana_ethtool_hc_stats,
+					hc_tx_mcast_pkts)},
+	{"hc_tx_mcast_bytes", offsetof(struct mana_ethtool_hc_stats,
+					hc_tx_mcast_bytes)},
+};
+
+static const struct mana_stats_desc mana_phy_stats[] = {
+	{ "hc_rx_pkt_drop_phy", offsetof(struct mana_ethtool_phy_stats, rx_pkt_drop_phy) },
+	{ "hc_tx_pkt_drop_phy", offsetof(struct mana_ethtool_phy_stats, tx_pkt_drop_phy) },
+	{ "hc_tc0_rx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, rx_pkt_tc0_phy) },
+	{ "hc_tc0_rx_byte_phy", offsetof(struct mana_ethtool_phy_stats, rx_byte_tc0_phy) },
+	{ "hc_tc0_tx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, tx_pkt_tc0_phy) },
+	{ "hc_tc0_tx_byte_phy", offsetof(struct mana_ethtool_phy_stats, tx_byte_tc0_phy) },
+	{ "hc_tc1_rx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, rx_pkt_tc1_phy) },
+	{ "hc_tc1_rx_byte_phy", offsetof(struct mana_ethtool_phy_stats, rx_byte_tc1_phy) },
+	{ "hc_tc1_tx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, tx_pkt_tc1_phy) },
+	{ "hc_tc1_tx_byte_phy", offsetof(struct mana_ethtool_phy_stats, tx_byte_tc1_phy) },
+	{ "hc_tc2_rx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, rx_pkt_tc2_phy) },
+	{ "hc_tc2_rx_byte_phy", offsetof(struct mana_ethtool_phy_stats, rx_byte_tc2_phy) },
+	{ "hc_tc2_tx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, tx_pkt_tc2_phy) },
+	{ "hc_tc2_tx_byte_phy", offsetof(struct mana_ethtool_phy_stats, tx_byte_tc2_phy) },
+	{ "hc_tc3_rx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, rx_pkt_tc3_phy) },
+	{ "hc_tc3_rx_byte_phy", offsetof(struct mana_ethtool_phy_stats, rx_byte_tc3_phy) },
+	{ "hc_tc3_tx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, tx_pkt_tc3_phy) },
+	{ "hc_tc3_tx_byte_phy", offsetof(struct mana_ethtool_phy_stats, tx_byte_tc3_phy) },
+	{ "hc_tc4_rx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, rx_pkt_tc4_phy) },
+	{ "hc_tc4_rx_byte_phy", offsetof(struct mana_ethtool_phy_stats, rx_byte_tc4_phy) },
+	{ "hc_tc4_tx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, tx_pkt_tc4_phy) },
+	{ "hc_tc4_tx_byte_phy", offsetof(struct mana_ethtool_phy_stats, tx_byte_tc4_phy) },
+	{ "hc_tc5_rx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, rx_pkt_tc5_phy) },
+	{ "hc_tc5_rx_byte_phy", offsetof(struct mana_ethtool_phy_stats, rx_byte_tc5_phy) },
+	{ "hc_tc5_tx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, tx_pkt_tc5_phy) },
+	{ "hc_tc5_tx_byte_phy", offsetof(struct mana_ethtool_phy_stats, tx_byte_tc5_phy) },
+	{ "hc_tc6_rx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, rx_pkt_tc6_phy) },
+	{ "hc_tc6_rx_byte_phy", offsetof(struct mana_ethtool_phy_stats, rx_byte_tc6_phy) },
+	{ "hc_tc6_tx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, tx_pkt_tc6_phy) },
+	{ "hc_tc6_tx_byte_phy", offsetof(struct mana_ethtool_phy_stats, tx_byte_tc6_phy) },
+	{ "hc_tc7_rx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, rx_pkt_tc7_phy) },
+	{ "hc_tc7_rx_byte_phy", offsetof(struct mana_ethtool_phy_stats, rx_byte_tc7_phy) },
+	{ "hc_tc7_tx_pkt_phy", offsetof(struct mana_ethtool_phy_stats, tx_pkt_tc7_phy) },
+	{ "hc_tc7_tx_byte_phy", offsetof(struct mana_ethtool_phy_stats, tx_byte_tc7_phy) },
+	{ "hc_tc0_rx_pause_phy", offsetof(struct mana_ethtool_phy_stats, rx_pause_tc0_phy) },
+	{ "hc_tc0_tx_pause_phy", offsetof(struct mana_ethtool_phy_stats, tx_pause_tc0_phy) },
+	{ "hc_tc1_rx_pause_phy", offsetof(struct mana_ethtool_phy_stats, rx_pause_tc1_phy) },
+	{ "hc_tc1_tx_pause_phy", offsetof(struct mana_ethtool_phy_stats, tx_pause_tc1_phy) },
+	{ "hc_tc2_rx_pause_phy", offsetof(struct mana_ethtool_phy_stats, rx_pause_tc2_phy) },
+	{ "hc_tc2_tx_pause_phy", offsetof(struct mana_ethtool_phy_stats, tx_pause_tc2_phy) },
+	{ "hc_tc3_rx_pause_phy", offsetof(struct mana_ethtool_phy_stats, rx_pause_tc3_phy) },
+	{ "hc_tc3_tx_pause_phy", offsetof(struct mana_ethtool_phy_stats, tx_pause_tc3_phy) },
+	{ "hc_tc4_rx_pause_phy", offsetof(struct mana_ethtool_phy_stats, rx_pause_tc4_phy) },
+	{ "hc_tc4_tx_pause_phy", offsetof(struct mana_ethtool_phy_stats, tx_pause_tc4_phy) },
+	{ "hc_tc5_rx_pause_phy", offsetof(struct mana_ethtool_phy_stats, rx_pause_tc5_phy) },
+	{ "hc_tc5_tx_pause_phy", offsetof(struct mana_ethtool_phy_stats, tx_pause_tc5_phy) },
+	{ "hc_tc6_rx_pause_phy", offsetof(struct mana_ethtool_phy_stats, rx_pause_tc6_phy) },
+	{ "hc_tc6_tx_pause_phy", offsetof(struct mana_ethtool_phy_stats, tx_pause_tc6_phy) },
+	{ "hc_tc7_rx_pause_phy", offsetof(struct mana_ethtool_phy_stats, rx_pause_tc7_phy) },
+	{ "hc_tc7_tx_pause_phy", offsetof(struct mana_ethtool_phy_stats, tx_pause_tc7_phy) },
+};
+
+static int mana_get_sset_count(struct net_device *ndev, int stringset)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	unsigned int num_queues = apc->num_queues;
+
+	if (stringset != ETH_SS_STATS)
+		return -EINVAL;
+
+	return ARRAY_SIZE(mana_eth_stats) + ARRAY_SIZE(mana_phy_stats) + ARRAY_SIZE(mana_hc_stats) +
+			num_queues * (MANA_STATS_RX_COUNT + MANA_STATS_TX_COUNT);
+}
+
+static void mana_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	unsigned int num_queues = apc->num_queues;
+	int i, j;
+
+	if (stringset != ETH_SS_STATS)
+		return;
+	for (i = 0; i < ARRAY_SIZE(mana_eth_stats); i++)
+		ethtool_puts(&data, mana_eth_stats[i].name);
+
+	for (i = 0; i < ARRAY_SIZE(mana_hc_stats); i++)
+		ethtool_puts(&data, mana_hc_stats[i].name);
+
+	for (i = 0; i < ARRAY_SIZE(mana_phy_stats); i++)
+		ethtool_puts(&data, mana_phy_stats[i].name);
+
+	for (i = 0; i < num_queues; i++) {
+		ethtool_sprintf(&data, "rx_%d_packets", i);
+		ethtool_sprintf(&data, "rx_%d_bytes", i);
+		ethtool_sprintf(&data, "rx_%d_xdp_drop", i);
+		ethtool_sprintf(&data, "rx_%d_xdp_tx", i);
+		ethtool_sprintf(&data, "rx_%d_xdp_redirect", i);
+		ethtool_sprintf(&data, "rx_%d_pkt_len0_err", i);
+		for (j = 0; j < MANA_RXCOMP_OOB_NUM_PPI - 1; j++)
+			ethtool_sprintf(&data, "rx_%d_coalesced_cqe_%d", i, j + 2);
+	}
+
+	for (i = 0; i < num_queues; i++) {
+		ethtool_sprintf(&data, "tx_%d_packets", i);
+		ethtool_sprintf(&data, "tx_%d_bytes", i);
+		ethtool_sprintf(&data, "tx_%d_xdp_xmit", i);
+		ethtool_sprintf(&data, "tx_%d_tso_packets", i);
+		ethtool_sprintf(&data, "tx_%d_tso_bytes", i);
+		ethtool_sprintf(&data, "tx_%d_tso_inner_packets", i);
+		ethtool_sprintf(&data, "tx_%d_tso_inner_bytes", i);
+		ethtool_sprintf(&data, "tx_%d_long_pkt_fmt", i);
+		ethtool_sprintf(&data, "tx_%d_short_pkt_fmt", i);
+		ethtool_sprintf(&data, "tx_%d_csum_partial", i);
+		ethtool_sprintf(&data, "tx_%d_mana_map_err", i);
+	}
+}
+
+static void mana_get_ethtool_stats(struct net_device *ndev,
+				   struct ethtool_stats *e_stats, u64 *data)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	unsigned int num_queues = apc->num_queues;
+	void *eth_stats = &apc->eth_stats;
+	void *hc_stats = &apc->ac->hc_stats;
+	void *phy_stats = &apc->phy_stats;
+	struct mana_stats_rx *rx_stats;
+	struct mana_stats_tx *tx_stats;
+	unsigned int start;
+	u64 packets, bytes;
+	u64 xdp_redirect;
+	u64 xdp_xmit;
+	u64 xdp_drop;
+	u64 xdp_tx;
+	u64 pkt_len0_err;
+	u64 coalesced_cqe[MANA_RXCOMP_OOB_NUM_PPI - 1];
+	u64 tso_packets;
+	u64 tso_bytes;
+	u64 tso_inner_packets;
+	u64 tso_inner_bytes;
+	u64 long_pkt_fmt;
+	u64 short_pkt_fmt;
+	u64 csum_partial;
+	u64 mana_map_err;
+	int q, i = 0, j;
+
+	if (!apc->port_is_up)
+		return;
+
+	/* We call this mana function to get the phy stats from GDMA and includes
+	 * aggregate tx/rx drop counters, Per-TC(Traffic Channel) tx/rx and pause
+	 * counters.
+	 */
+	mana_query_phy_stats(apc);
+
+	for (q = 0; q < ARRAY_SIZE(mana_eth_stats); q++)
+		data[i++] = *(u64 *)(eth_stats + mana_eth_stats[q].offset);
+
+	for (q = 0; q < ARRAY_SIZE(mana_hc_stats); q++)
+		data[i++] = *(u64 *)(hc_stats + mana_hc_stats[q].offset);
+
+	for (q = 0; q < ARRAY_SIZE(mana_phy_stats); q++)
+		data[i++] = *(u64 *)(phy_stats + mana_phy_stats[q].offset);
+
+	for (q = 0; q < num_queues; q++) {
+		rx_stats = &apc->rxqs[q]->stats;
+
+		do {
+			start = u64_stats_fetch_begin(&rx_stats->syncp);
+			packets = rx_stats->packets;
+			bytes = rx_stats->bytes;
+			xdp_drop = rx_stats->xdp_drop;
+			xdp_tx = rx_stats->xdp_tx;
+			xdp_redirect = rx_stats->xdp_redirect;
+			pkt_len0_err = rx_stats->pkt_len0_err;
+			for (j = 0; j < MANA_RXCOMP_OOB_NUM_PPI - 1; j++)
+				coalesced_cqe[j] = rx_stats->coalesced_cqe[j];
+		} while (u64_stats_fetch_retry(&rx_stats->syncp, start));
+
+		data[i++] = packets;
+		data[i++] = bytes;
+		data[i++] = xdp_drop;
+		data[i++] = xdp_tx;
+		data[i++] = xdp_redirect;
+		data[i++] = pkt_len0_err;
+		for (j = 0; j < MANA_RXCOMP_OOB_NUM_PPI - 1; j++)
+			data[i++] = coalesced_cqe[j];
+	}
+
+	for (q = 0; q < num_queues; q++) {
+		tx_stats = &apc->tx_qp[q]->txq.stats;
+
+		do {
+			start = u64_stats_fetch_begin(&tx_stats->syncp);
+			packets = tx_stats->packets;
+			bytes = tx_stats->bytes;
+			xdp_xmit = tx_stats->xdp_xmit;
+			tso_packets = tx_stats->tso_packets;
+			tso_bytes = tx_stats->tso_bytes;
+			tso_inner_packets = tx_stats->tso_inner_packets;
+			tso_inner_bytes = tx_stats->tso_inner_bytes;
+			long_pkt_fmt = tx_stats->long_pkt_fmt;
+			short_pkt_fmt = tx_stats->short_pkt_fmt;
+			csum_partial = tx_stats->csum_partial;
+			mana_map_err = tx_stats->mana_map_err;
+		} while (u64_stats_fetch_retry(&tx_stats->syncp, start));
+
+		data[i++] = packets;
+		data[i++] = bytes;
+		data[i++] = xdp_xmit;
+		data[i++] = tso_packets;
+		data[i++] = tso_bytes;
+		data[i++] = tso_inner_packets;
+		data[i++] = tso_inner_bytes;
+		data[i++] = long_pkt_fmt;
+		data[i++] = short_pkt_fmt;
+		data[i++] = csum_partial;
+		data[i++] = mana_map_err;
+	}
+}
+
+static u32 mana_get_rx_ring_count(struct net_device *ndev)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+
+	return apc->num_queues;
+}
+
+static u32 mana_get_rxfh_key_size(struct net_device *ndev)
+{
+	return MANA_HASH_KEY_SIZE;
+}
+
+static u32 mana_rss_indir_size(struct net_device *ndev)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+
+	return apc->indir_table_sz;
+}
+
+static int mana_get_rxfh(struct net_device *ndev,
+			 struct ethtool_rxfh_param *rxfh)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	int i;
+
+	rxfh->hfunc = ETH_RSS_HASH_TOP; /* Toeplitz */
+
+	if (rxfh->indir) {
+		for (i = 0; i < apc->indir_table_sz; i++)
+			rxfh->indir[i] = apc->indir_table[i];
+	}
+
+	if (rxfh->key)
+		memcpy(rxfh->key, apc->hashkey, MANA_HASH_KEY_SIZE);
+
+	return 0;
+}
+
+static int mana_set_rxfh(struct net_device *ndev,
+			 struct ethtool_rxfh_param *rxfh,
+			 struct netlink_ext_ack *extack)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	bool update_hash = false, update_table = false;
+	u8 save_key[MANA_HASH_KEY_SIZE];
+	u32 *save_table;
+	int i, err;
+
+	if (!apc->port_is_up)
+		return -EOPNOTSUPP;
+
+	if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
+	    rxfh->hfunc != ETH_RSS_HASH_TOP)
+		return -EOPNOTSUPP;
+
+	save_table = kcalloc(apc->indir_table_sz, sizeof(u32), GFP_KERNEL);
+	if (!save_table)
+		return -ENOMEM;
+
+	if (rxfh->indir) {
+		for (i = 0; i < apc->indir_table_sz; i++)
+			if (rxfh->indir[i] >= apc->num_queues) {
+				err = -EINVAL;
+				goto cleanup;
+			}
+
+		update_table = true;
+		for (i = 0; i < apc->indir_table_sz; i++) {
+			save_table[i] = apc->indir_table[i];
+			apc->indir_table[i] = rxfh->indir[i];
+		}
+	}
+
+	if (rxfh->key) {
+		update_hash = true;
+		memcpy(save_key, apc->hashkey, MANA_HASH_KEY_SIZE);
+		memcpy(apc->hashkey, rxfh->key, MANA_HASH_KEY_SIZE);
+	}
+
+	err = mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table);
+
+	if (err) { /* recover to original values */
+		if (update_table) {
+			for (i = 0; i < apc->indir_table_sz; i++)
+				apc->indir_table[i] = save_table[i];
+		}
+
+		if (update_hash)
+			memcpy(apc->hashkey, save_key, MANA_HASH_KEY_SIZE);
+
+		mana_config_rss(apc, TRI_STATE_TRUE, update_hash, update_table);
+	}
+
+cleanup:
+	kfree(save_table);
+
+	return err;
+}
+
+static void mana_get_channels(struct net_device *ndev,
+			      struct ethtool_channels *channel)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+
+	channel->max_combined = apc->max_queues;
+	channel->combined_count = apc->num_queues;
+}
+
+#define MANA_RX_CQE_NSEC_DEF 2048
+static int mana_get_coalesce(struct net_device *ndev,
+			     struct ethtool_coalesce *ec,
+			     struct kernel_ethtool_coalesce *kernel_coal,
+			     struct netlink_ext_ack *extack)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+
+	kernel_coal->rx_cqe_frames =
+		apc->cqe_coalescing_enable ? MANA_RXCOMP_OOB_NUM_PPI : 1;
+
+	kernel_coal->rx_cqe_nsecs = apc->cqe_coalescing_timeout_ns;
+
+	/* Return the default timeout value for old FW not providing
+	 * this value.
+	 */
+	if (apc->port_is_up && apc->cqe_coalescing_enable &&
+	    !kernel_coal->rx_cqe_nsecs)
+		kernel_coal->rx_cqe_nsecs = MANA_RX_CQE_NSEC_DEF;
+
+	return 0;
+}
+
+static int mana_set_coalesce(struct net_device *ndev,
+			     struct ethtool_coalesce *ec,
+			     struct kernel_ethtool_coalesce *kernel_coal,
+			     struct netlink_ext_ack *extack)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	u8 saved_cqe_coalescing_enable;
+	int err;
+
+	if (kernel_coal->rx_cqe_frames != 1 &&
+	    kernel_coal->rx_cqe_frames != MANA_RXCOMP_OOB_NUM_PPI) {
+		NL_SET_ERR_MSG_FMT(extack,
+				   "rx-frames must be 1 or %u, got %u",
+				   MANA_RXCOMP_OOB_NUM_PPI,
+				   kernel_coal->rx_cqe_frames);
+		return -EINVAL;
+	}
+
+	saved_cqe_coalescing_enable = apc->cqe_coalescing_enable;
+	apc->cqe_coalescing_enable =
+		kernel_coal->rx_cqe_frames == MANA_RXCOMP_OOB_NUM_PPI;
+
+	if (!apc->port_is_up)
+		return 0;
+
+	err = mana_config_rss(apc, TRI_STATE_TRUE, false, false);
+	if (err)
+		apc->cqe_coalescing_enable = saved_cqe_coalescing_enable;
+
+	return err;
+}
+
+/* mana_set_channels - change the number of queues on a port
+ *
+ * Returns -EBUSY if RDMA holds the vport with EQs sized to the
+ * current num_queues.
+ */
+static int mana_set_channels(struct net_device *ndev,
+			     struct ethtool_channels *channels)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	unsigned int new_count = channels->combined_count;
+	unsigned int old_count = apc->num_queues;
+	int err;
+
+	/* Set channel_changing to block RDMA from grabbing the vport
+	 * during the detach/attach window. mana_cfg_vport() checks
+	 * this flag under vport_mutex and returns -EBUSY if set.
+	 */
+	mutex_lock(&apc->vport_mutex);
+	if (!apc->port_is_up && apc->vport_use_count) {
+		mutex_unlock(&apc->vport_mutex);
+		return -EBUSY;
+	}
+	apc->channel_changing = true;
+	mutex_unlock(&apc->vport_mutex);
+
+	err = mana_pre_alloc_rxbufs(apc, ndev->mtu, new_count);
+	if (err) {
+		netdev_err(ndev, "Insufficient memory for new allocations");
+		goto clear_flag;
+	}
+
+	err = mana_detach(ndev, false);
+	if (err) {
+		netdev_err(ndev, "mana_detach failed: %d\n", err);
+		goto out;
+	}
+
+	apc->num_queues = new_count;
+	err = mana_attach(ndev);
+	if (err) {
+		apc->num_queues = old_count;
+		netdev_err(ndev, "mana_attach failed: %d\n", err);
+	}
+
+out:
+	mana_pre_dealloc_rxbufs(apc);
+clear_flag:
+	mutex_lock(&apc->vport_mutex);
+	apc->channel_changing = false;
+	mutex_unlock(&apc->vport_mutex);
+	return err;
+}
+
+static void mana_get_ringparam(struct net_device *ndev,
+			       struct ethtool_ringparam *ring,
+			       struct kernel_ethtool_ringparam *kernel_ring,
+			       struct netlink_ext_ack *extack)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+
+	ring->rx_pending = apc->rx_queue_size;
+	ring->tx_pending = apc->tx_queue_size;
+	ring->rx_max_pending = MAX_RX_BUFFERS_PER_QUEUE;
+	ring->tx_max_pending = MAX_TX_BUFFERS_PER_QUEUE;
+}
+
+static int mana_set_ringparam(struct net_device *ndev,
+			      struct ethtool_ringparam *ring,
+			      struct kernel_ethtool_ringparam *kernel_ring,
+			      struct netlink_ext_ack *extack)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	u32 new_tx, new_rx;
+	u32 old_tx, old_rx;
+	int err;
+
+	old_tx = apc->tx_queue_size;
+	old_rx = apc->rx_queue_size;
+
+	if (ring->tx_pending < MIN_TX_BUFFERS_PER_QUEUE) {
+		NL_SET_ERR_MSG_FMT(extack, "tx:%d less than the min:%d", ring->tx_pending,
+				   MIN_TX_BUFFERS_PER_QUEUE);
+		return -EINVAL;
+	}
+
+	if (ring->rx_pending < MIN_RX_BUFFERS_PER_QUEUE) {
+		NL_SET_ERR_MSG_FMT(extack, "rx:%d less than the min:%d", ring->rx_pending,
+				   MIN_RX_BUFFERS_PER_QUEUE);
+		return -EINVAL;
+	}
+
+	new_rx = roundup_pow_of_two(ring->rx_pending);
+	new_tx = roundup_pow_of_two(ring->tx_pending);
+	netdev_info(ndev, "Using nearest power of 2 values for Txq:%d Rxq:%d\n",
+		    new_tx, new_rx);
+
+	/* pre-allocating new buffers to prevent failures in mana_attach() later */
+	apc->rx_queue_size = new_rx;
+	err = mana_pre_alloc_rxbufs(apc, ndev->mtu, apc->num_queues);
+	apc->rx_queue_size = old_rx;
+	if (err) {
+		netdev_err(ndev, "Insufficient memory for new allocations\n");
+		return err;
+	}
+
+	err = mana_detach(ndev, false);
+	if (err) {
+		netdev_err(ndev, "mana_detach failed: %d\n", err);
+		goto out;
+	}
+
+	apc->tx_queue_size = new_tx;
+	apc->rx_queue_size = new_rx;
+
+	err = mana_attach(ndev);
+	if (err) {
+		netdev_err(ndev, "mana_attach failed: %d\n", err);
+		apc->tx_queue_size = old_tx;
+		apc->rx_queue_size = old_rx;
+	}
+out:
+	mana_pre_dealloc_rxbufs(apc);
+	return err;
+}
+
+static int mana_get_link_ksettings(struct net_device *ndev,
+				   struct ethtool_link_ksettings *cmd)
+{
+	struct mana_port_context *apc = netdev_priv(ndev);
+	int err;
+
+	err = mana_query_link_cfg(apc);
+	cmd->base.speed = (err) ? SPEED_UNKNOWN : apc->max_speed;
+
+	cmd->base.duplex = DUPLEX_FULL;
+	cmd->base.port = PORT_OTHER;
+
+	return 0;
+}
+
+const struct ethtool_ops mana_ethtool_ops = {
+	.supported_coalesce_params = ETHTOOL_COALESCE_RX_CQE_FRAMES,
+	.op_needs_rtnl		= ETHTOOL_OP_NEEDS_RTNL_SCHANNELS |
+				  ETHTOOL_OP_NEEDS_RTNL_SRINGPARAM,
+	.get_ethtool_stats	= mana_get_ethtool_stats,
+	.get_sset_count		= mana_get_sset_count,
+	.get_strings		= mana_get_strings,
+	.get_rx_ring_count	= mana_get_rx_ring_count,
+	.get_rxfh_key_size	= mana_get_rxfh_key_size,
+	.get_rxfh_indir_size	= mana_rss_indir_size,
+	.get_rxfh		= mana_get_rxfh,
+	.set_rxfh		= mana_set_rxfh,
+	.get_channels		= mana_get_channels,
+	.set_channels		= mana_set_channels,
+	.get_coalesce		= mana_get_coalesce,
+	.set_coalesce		= mana_set_coalesce,
+	.get_ringparam          = mana_get_ringparam,
+	.set_ringparam          = mana_set_ringparam,
+	.get_link_ksettings	= mana_get_link_ksettings,
+	.get_link		= ethtool_op_get_link,
+};
diff --git a/drivers/net/ethernet/microsoft/mana/shm_channel.c b/drivers/net/ethernet/microsoft/mana/shm_channel.c
new file mode 100644
index 000000000..d21b5db06
--- /dev/null
+++ b/drivers/net/ethernet/microsoft/mana/shm_channel.c
@@ -0,0 +1,287 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/* Copyright (c) 2021, Microsoft Corporation. */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+
+#include <net/mana/gdma.h>
+#include <net/mana/shm_channel.h>
+
+#define PAGE_FRAME_L48_WIDTH_BYTES 6
+#define PAGE_FRAME_L48_WIDTH_BITS (PAGE_FRAME_L48_WIDTH_BYTES * 8)
+#define PAGE_FRAME_L48_MASK 0x0000FFFFFFFFFFFF
+#define PAGE_FRAME_H4_WIDTH_BITS 4
+#define VECTOR_MASK 0xFFFF
+#define SHMEM_VF_RESET_STATE ((u32)-1)
+
+#define SMC_MSG_TYPE_ESTABLISH_HWC 1
+#define SMC_MSG_TYPE_ESTABLISH_HWC_VERSION 0
+
+#define SMC_MSG_TYPE_DESTROY_HWC 2
+#define SMC_MSG_TYPE_DESTROY_HWC_VERSION 0
+
+#define SMC_MSG_DIRECTION_REQUEST 0
+#define SMC_MSG_DIRECTION_RESPONSE 1
+
+/* Structures labeled with "HW DATA" are exchanged with the hardware. All of
+ * them are naturally aligned and hence don't need __packed.
+ */
+
+/* Shared memory channel protocol header
+ *
+ * msg_type: set on request and response; response matches request.
+ * msg_version: newer PF writes back older response (matching request)
+ *  older PF acts on latest version known and sets that version in result
+ *  (less than request).
+ * direction: 0 for request, VF->PF; 1 for response, PF->VF.
+ * status: 0 on request,
+ *   operation result on response (success = 0, failure = 1 or greater).
+ * reset_vf: If set on either establish or destroy request, indicates perform
+ *  FLR before/after the operation.
+ * owner_is_pf: 1 indicates PF owned, 0 indicates VF owned.
+ */
+union smc_proto_hdr {
+	u32 as_uint32;
+
+	struct {
+		u8 msg_type	: 3;
+		u8 msg_version	: 3;
+		u8 reserved_1	: 1;
+		u8 direction	: 1;
+
+		u8 status;
+
+		u8 reserved_2;
+
+		u8 reset_vf	: 1;
+		u8 reserved_3	: 6;
+		u8 owner_is_pf	: 1;
+	};
+}; /* HW DATA */
+
+static int mana_smc_poll_register(void __iomem *base, bool reset)
+{
+	void __iomem *ptr = base + SMC_LAST_DWORD * SMC_BASIC_UNIT;
+	u32 last_dword;
+	int i;
+
+	/* Poll the hardware for the ownership bit. This should be pretty fast,
+	 * but let's do it in a loop just in case the hardware or the PF
+	 * driver are temporarily busy.
+	 */
+	for (i = 0; i < 20 * 1000; i++)  {
+		last_dword = readl(ptr);
+
+		/* shmem reads as 0xFFFFFFFF in the reset case */
+		if (reset && last_dword == SHMEM_VF_RESET_STATE)
+			return 0;
+
+		/* If bit_31 is set, the PF currently owns the SMC. */
+		if (!(last_dword & BIT(31)))
+			return 0;
+
+		usleep_range(1000, 2000);
+	}
+
+	return -ETIMEDOUT;
+}
+
+static int mana_smc_read_response(struct shm_channel *sc, u32 msg_type,
+				  u32 msg_version, bool reset_vf)
+{
+	void __iomem *base = sc->base;
+	union smc_proto_hdr hdr;
+	int err;
+
+	/* Wait for PF to respond. */
+	err = mana_smc_poll_register(base, reset_vf);
+	if (err)
+		return err;
+
+	hdr.as_uint32 = readl(base + SMC_LAST_DWORD * SMC_BASIC_UNIT);
+
+	if (reset_vf && hdr.as_uint32 == SHMEM_VF_RESET_STATE)
+		return 0;
+
+	/* Validate protocol fields from the PF driver */
+	if (hdr.msg_type != msg_type || hdr.msg_version > msg_version ||
+	    hdr.direction != SMC_MSG_DIRECTION_RESPONSE) {
+		dev_err(sc->dev, "Wrong SMC response 0x%x, type=%d, ver=%d\n",
+			hdr.as_uint32, msg_type, msg_version);
+		return -EPROTO;
+	}
+
+	/* Validate the operation result */
+	if (hdr.status != 0) {
+		dev_err(sc->dev, "SMC operation failed: 0x%x\n", hdr.status);
+		return -EPROTO;
+	}
+
+	return 0;
+}
+
+void mana_smc_init(struct shm_channel *sc, struct device *dev,
+		   void __iomem *base)
+{
+	sc->dev = dev;
+	sc->base = base;
+}
+
+int mana_smc_setup_hwc(struct shm_channel *sc, bool reset_vf, u64 eq_addr,
+		       u64 cq_addr, u64 rq_addr, u64 sq_addr,
+		       u32 eq_msix_index)
+{
+	union smc_proto_hdr *hdr;
+	u16 all_addr_h4bits = 0;
+	u16 frame_addr_seq = 0;
+	u64 frame_addr = 0;
+	u8 shm_buf[32];
+	u64 *shmem;
+	u32 *dword;
+	u8 *ptr;
+	int err;
+	int i;
+
+	/* Ensure VF already has possession of shared memory */
+	err = mana_smc_poll_register(sc->base, false);
+	if (err) {
+		dev_err(sc->dev, "Timeout when setting up HWC: %d\n", err);
+		return err;
+	}
+
+	if (!MANA_PAGE_ALIGNED(eq_addr) || !MANA_PAGE_ALIGNED(cq_addr) ||
+	    !MANA_PAGE_ALIGNED(rq_addr) || !MANA_PAGE_ALIGNED(sq_addr))
+		return -EINVAL;
+
+	if ((eq_msix_index & VECTOR_MASK) != eq_msix_index)
+		return -EINVAL;
+
+	/* Scheme for packing four addresses and extra info into 256 bits.
+	 *
+	 * Addresses must be page frame aligned, so only frame address bits
+	 * are transferred.
+	 *
+	 * 52-bit frame addresses are split into the lower 48 bits and upper
+	 * 4 bits. Lower 48 bits of 4 address are written sequentially from
+	 * the start of the 256-bit shared memory region followed by 16 bits
+	 * containing the upper 4 bits of the 4 addresses in sequence.
+	 *
+	 * A 16 bit EQ vector number fills out the next-to-last 32-bit dword.
+	 *
+	 * The final 32-bit dword is used for protocol control information as
+	 * defined in smc_proto_hdr.
+	 */
+
+	memset(shm_buf, 0, sizeof(shm_buf));
+	ptr = shm_buf;
+
+	/* EQ addr: low 48 bits of frame address */
+	shmem = (u64 *)ptr;
+	frame_addr = MANA_PFN(eq_addr);
+	*shmem = frame_addr & PAGE_FRAME_L48_MASK;
+	all_addr_h4bits |= (frame_addr >> PAGE_FRAME_L48_WIDTH_BITS) <<
+		(frame_addr_seq++ * PAGE_FRAME_H4_WIDTH_BITS);
+	ptr += PAGE_FRAME_L48_WIDTH_BYTES;
+
+	/* CQ addr: low 48 bits of frame address */
+	shmem = (u64 *)ptr;
+	frame_addr = MANA_PFN(cq_addr);
+	*shmem = frame_addr & PAGE_FRAME_L48_MASK;
+	all_addr_h4bits |= (frame_addr >> PAGE_FRAME_L48_WIDTH_BITS) <<
+		(frame_addr_seq++ * PAGE_FRAME_H4_WIDTH_BITS);
+	ptr += PAGE_FRAME_L48_WIDTH_BYTES;
+
+	/* RQ addr: low 48 bits of frame address */
+	shmem = (u64 *)ptr;
+	frame_addr = MANA_PFN(rq_addr);
+	*shmem = frame_addr & PAGE_FRAME_L48_MASK;
+	all_addr_h4bits |= (frame_addr >> PAGE_FRAME_L48_WIDTH_BITS) <<
+		(frame_addr_seq++ * PAGE_FRAME_H4_WIDTH_BITS);
+	ptr += PAGE_FRAME_L48_WIDTH_BYTES;
+
+	/* SQ addr: low 48 bits of frame address */
+	shmem = (u64 *)ptr;
+	frame_addr = MANA_PFN(sq_addr);
+	*shmem = frame_addr & PAGE_FRAME_L48_MASK;
+	all_addr_h4bits |= (frame_addr >> PAGE_FRAME_L48_WIDTH_BITS) <<
+		(frame_addr_seq++ * PAGE_FRAME_H4_WIDTH_BITS);
+	ptr += PAGE_FRAME_L48_WIDTH_BYTES;
+
+	/* High 4 bits of the four frame addresses */
+	*((u16 *)ptr) = all_addr_h4bits;
+	ptr += sizeof(u16);
+
+	/* EQ MSIX vector number */
+	*((u16 *)ptr) = (u16)eq_msix_index;
+	ptr += sizeof(u16);
+
+	/* 32-bit protocol header in final dword */
+	*((u32 *)ptr) = 0;
+
+	hdr = (union smc_proto_hdr *)ptr;
+	hdr->msg_type = SMC_MSG_TYPE_ESTABLISH_HWC;
+	hdr->msg_version = SMC_MSG_TYPE_ESTABLISH_HWC_VERSION;
+	hdr->direction = SMC_MSG_DIRECTION_REQUEST;
+	hdr->reset_vf = reset_vf;
+
+	/* Write 256-message buffer to shared memory (final 32-bit write
+	 * triggers HW to set possession bit to PF).
+	 */
+	dword = (u32 *)shm_buf;
+	for (i = 0; i < SMC_APERTURE_DWORDS; i++)
+		writel(*dword++, sc->base + i * SMC_BASIC_UNIT);
+
+	/* Read shmem response (polling for VF possession) and validate.
+	 * For setup, waiting for response on shared memory is not strictly
+	 * necessary, since wait occurs later for results to appear in EQE's.
+	 */
+	err = mana_smc_read_response(sc, SMC_MSG_TYPE_ESTABLISH_HWC,
+				     SMC_MSG_TYPE_ESTABLISH_HWC_VERSION,
+				     reset_vf);
+	if (err) {
+		dev_err(sc->dev, "Error when setting up HWC: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+int mana_smc_teardown_hwc(struct shm_channel *sc, bool reset_vf)
+{
+	union smc_proto_hdr hdr = {};
+	int err;
+
+	/* Ensure already has possession of shared memory */
+	err = mana_smc_poll_register(sc->base, false);
+	if (err) {
+		dev_err(sc->dev, "Timeout when tearing down HWC\n");
+		return err;
+	}
+
+	/* Set up protocol header for HWC destroy message */
+	hdr.msg_type = SMC_MSG_TYPE_DESTROY_HWC;
+	hdr.msg_version = SMC_MSG_TYPE_DESTROY_HWC_VERSION;
+	hdr.direction = SMC_MSG_DIRECTION_REQUEST;
+	hdr.reset_vf = reset_vf;
+
+	/* Write message in high 32 bits of 256-bit shared memory, causing HW
+	 * to set possession bit to PF.
+	 */
+	writel(hdr.as_uint32, sc->base + SMC_LAST_DWORD * SMC_BASIC_UNIT);
+
+	/* Read shmem response (polling for VF possession) and validate.
+	 * For teardown, waiting for response is required to ensure hardware
+	 * invalidates MST entries before software frees memory.
+	 */
+	err = mana_smc_read_response(sc, SMC_MSG_TYPE_DESTROY_HWC,
+				     SMC_MSG_TYPE_DESTROY_HWC_VERSION,
+				     reset_vf);
+	if (err) {
+		dev_err(sc->dev, "Error when tearing down HWC: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}