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    Subject[PATCH v6 8/8] eni_vdpa: add vDPA driver for Alibaba ENI
    Date
    This patch adds a new vDPA driver for Alibaba ENI(Elastic Network
    Interface) which is build upon virtio 0.9.5 specification.
    And this driver doesn't support to run on BE host.

    Signed-off-by: Wu Zongyong <wuzongyong@linux.alibaba.com>
    ---
    drivers/vdpa/Kconfig | 8 +
    drivers/vdpa/Makefile | 1 +
    drivers/vdpa/alibaba/Makefile | 3 +
    drivers/vdpa/alibaba/eni_vdpa.c | 553 ++++++++++++++++++++++++++++++++
    4 files changed, 565 insertions(+)
    create mode 100644 drivers/vdpa/alibaba/Makefile
    create mode 100644 drivers/vdpa/alibaba/eni_vdpa.c

    diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig
    index 3d91982d8371..c0232a2148a7 100644
    --- a/drivers/vdpa/Kconfig
    +++ b/drivers/vdpa/Kconfig
    @@ -78,4 +78,12 @@ config VP_VDPA
    help
    This kernel module bridges virtio PCI device to vDPA bus.

    +config ALIBABA_ENI_VDPA
    + tristate "vDPA driver for Alibaba ENI"
    + select VIRTIO_PCI_LEGACY_LIB
    + depends on PCI_MSI && !CPU_BIG_ENDIAN
    + help
    + VDPA driver for Alibaba ENI(Elastic Network Interface) which is build upon
    + virtio 0.9.5 specification.
    +
    endif # VDPA
    diff --git a/drivers/vdpa/Makefile b/drivers/vdpa/Makefile
    index f02ebed33f19..15665563a7f4 100644
    --- a/drivers/vdpa/Makefile
    +++ b/drivers/vdpa/Makefile
    @@ -5,3 +5,4 @@ obj-$(CONFIG_VDPA_USER) += vdpa_user/
    obj-$(CONFIG_IFCVF) += ifcvf/
    obj-$(CONFIG_MLX5_VDPA) += mlx5/
    obj-$(CONFIG_VP_VDPA) += virtio_pci/
    +obj-$(CONFIG_ALIBABA_ENI_VDPA) += alibaba/
    diff --git a/drivers/vdpa/alibaba/Makefile b/drivers/vdpa/alibaba/Makefile
    new file mode 100644
    index 000000000000..ef4aae69f87a
    --- /dev/null
    +++ b/drivers/vdpa/alibaba/Makefile
    @@ -0,0 +1,3 @@
    +# SPDX-License-Identifier: GPL-2.0
    +obj-$(CONFIG_ALIBABA_ENI_VDPA) += eni_vdpa.o
    +
    diff --git a/drivers/vdpa/alibaba/eni_vdpa.c b/drivers/vdpa/alibaba/eni_vdpa.c
    new file mode 100644
    index 000000000000..6a09f157d810
    --- /dev/null
    +++ b/drivers/vdpa/alibaba/eni_vdpa.c
    @@ -0,0 +1,553 @@
    +// SPDX-License-Identifier: GPL-2.0-only
    +/*
    + * vDPA bridge driver for Alibaba ENI(Elastic Network Interface)
    + *
    + * Copyright (c) 2021, Alibaba Inc. All rights reserved.
    + * Author: Wu Zongyong <wuzongyong@linux.alibaba.com>
    + *
    + */
    +
    +#include "linux/bits.h"
    +#include <linux/interrupt.h>
    +#include <linux/module.h>
    +#include <linux/pci.h>
    +#include <linux/vdpa.h>
    +#include <linux/virtio.h>
    +#include <linux/virtio_config.h>
    +#include <linux/virtio_ring.h>
    +#include <linux/virtio_pci.h>
    +#include <linux/virtio_pci_legacy.h>
    +#include <uapi/linux/virtio_net.h>
    +
    +#define ENI_MSIX_NAME_SIZE 256
    +
    +#define ENI_ERR(pdev, fmt, ...) \
    + dev_err(&pdev->dev, "%s"fmt, "eni_vdpa: ", ##__VA_ARGS__)
    +#define ENI_DBG(pdev, fmt, ...) \
    + dev_dbg(&pdev->dev, "%s"fmt, "eni_vdpa: ", ##__VA_ARGS__)
    +#define ENI_INFO(pdev, fmt, ...) \
    + dev_info(&pdev->dev, "%s"fmt, "eni_vdpa: ", ##__VA_ARGS__)
    +
    +struct eni_vring {
    + void __iomem *notify;
    + char msix_name[ENI_MSIX_NAME_SIZE];
    + struct vdpa_callback cb;
    + int irq;
    +};
    +
    +struct eni_vdpa {
    + struct vdpa_device vdpa;
    + struct virtio_pci_legacy_device ldev;
    + struct eni_vring *vring;
    + struct vdpa_callback config_cb;
    + char msix_name[ENI_MSIX_NAME_SIZE];
    + int config_irq;
    + int queues;
    + int vectors;
    +};
    +
    +static struct eni_vdpa *vdpa_to_eni(struct vdpa_device *vdpa)
    +{
    + return container_of(vdpa, struct eni_vdpa, vdpa);
    +}
    +
    +static struct virtio_pci_legacy_device *vdpa_to_ldev(struct vdpa_device *vdpa)
    +{
    + struct eni_vdpa *eni_vdpa = vdpa_to_eni(vdpa);
    +
    + return &eni_vdpa->ldev;
    +}
    +
    +static u64 eni_vdpa_get_features(struct vdpa_device *vdpa)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    + u64 features = vp_legacy_get_features(ldev);
    +
    + features |= BIT_ULL(VIRTIO_F_ACCESS_PLATFORM);
    + features |= BIT_ULL(VIRTIO_F_ORDER_PLATFORM);
    +
    + return features;
    +}
    +
    +static int eni_vdpa_set_features(struct vdpa_device *vdpa, u64 features)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    +
    + if (!(features & BIT_ULL(VIRTIO_NET_F_MRG_RXBUF)) && features) {
    + ENI_ERR(ldev->pci_dev,
    + "VIRTIO_NET_F_MRG_RXBUF is not negotiated\n");
    + return -EINVAL;
    + }
    +
    + vp_legacy_set_features(ldev, (u32)features);
    +
    + return 0;
    +}
    +
    +static u8 eni_vdpa_get_status(struct vdpa_device *vdpa)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    +
    + return vp_legacy_get_status(ldev);
    +}
    +
    +static int eni_vdpa_get_vq_irq(struct vdpa_device *vdpa, u16 idx)
    +{
    + struct eni_vdpa *eni_vdpa = vdpa_to_eni(vdpa);
    + int irq = eni_vdpa->vring[idx].irq;
    +
    + if (irq == VIRTIO_MSI_NO_VECTOR)
    + return -EINVAL;
    +
    + return irq;
    +}
    +
    +static void eni_vdpa_free_irq(struct eni_vdpa *eni_vdpa)
    +{
    + struct virtio_pci_legacy_device *ldev = &eni_vdpa->ldev;
    + struct pci_dev *pdev = ldev->pci_dev;
    + int i;
    +
    + for (i = 0; i < eni_vdpa->queues; i++) {
    + if (eni_vdpa->vring[i].irq != VIRTIO_MSI_NO_VECTOR) {
    + vp_legacy_queue_vector(ldev, i, VIRTIO_MSI_NO_VECTOR);
    + devm_free_irq(&pdev->dev, eni_vdpa->vring[i].irq,
    + &eni_vdpa->vring[i]);
    + eni_vdpa->vring[i].irq = VIRTIO_MSI_NO_VECTOR;
    + }
    + }
    +
    + if (eni_vdpa->config_irq != VIRTIO_MSI_NO_VECTOR) {
    + vp_legacy_config_vector(ldev, VIRTIO_MSI_NO_VECTOR);
    + devm_free_irq(&pdev->dev, eni_vdpa->config_irq, eni_vdpa);
    + eni_vdpa->config_irq = VIRTIO_MSI_NO_VECTOR;
    + }
    +
    + if (eni_vdpa->vectors) {
    + pci_free_irq_vectors(pdev);
    + eni_vdpa->vectors = 0;
    + }
    +}
    +
    +static irqreturn_t eni_vdpa_vq_handler(int irq, void *arg)
    +{
    + struct eni_vring *vring = arg;
    +
    + if (vring->cb.callback)
    + return vring->cb.callback(vring->cb.private);
    +
    + return IRQ_HANDLED;
    +}
    +
    +static irqreturn_t eni_vdpa_config_handler(int irq, void *arg)
    +{
    + struct eni_vdpa *eni_vdpa = arg;
    +
    + if (eni_vdpa->config_cb.callback)
    + return eni_vdpa->config_cb.callback(eni_vdpa->config_cb.private);
    +
    + return IRQ_HANDLED;
    +}
    +
    +static int eni_vdpa_request_irq(struct eni_vdpa *eni_vdpa)
    +{
    + struct virtio_pci_legacy_device *ldev = &eni_vdpa->ldev;
    + struct pci_dev *pdev = ldev->pci_dev;
    + int i, ret, irq;
    + int queues = eni_vdpa->queues;
    + int vectors = queues + 1;
    +
    + ret = pci_alloc_irq_vectors(pdev, vectors, vectors, PCI_IRQ_MSIX);
    + if (ret != vectors) {
    + ENI_ERR(pdev,
    + "failed to allocate irq vectors want %d but %d\n",
    + vectors, ret);
    + return ret;
    + }
    +
    + eni_vdpa->vectors = vectors;
    +
    + for (i = 0; i < queues; i++) {
    + snprintf(eni_vdpa->vring[i].msix_name, ENI_MSIX_NAME_SIZE,
    + "eni-vdpa[%s]-%d\n", pci_name(pdev), i);
    + irq = pci_irq_vector(pdev, i);
    + ret = devm_request_irq(&pdev->dev, irq,
    + eni_vdpa_vq_handler,
    + 0, eni_vdpa->vring[i].msix_name,
    + &eni_vdpa->vring[i]);
    + if (ret) {
    + ENI_ERR(pdev, "failed to request irq for vq %d\n", i);
    + goto err;
    + }
    + vp_legacy_queue_vector(ldev, i, i);
    + eni_vdpa->vring[i].irq = irq;
    + }
    +
    + snprintf(eni_vdpa->msix_name, ENI_MSIX_NAME_SIZE, "eni-vdpa[%s]-config\n",
    + pci_name(pdev));
    + irq = pci_irq_vector(pdev, queues);
    + ret = devm_request_irq(&pdev->dev, irq, eni_vdpa_config_handler, 0,
    + eni_vdpa->msix_name, eni_vdpa);
    + if (ret) {
    + ENI_ERR(pdev, "failed to request irq for config vq %d\n", i);
    + goto err;
    + }
    + vp_legacy_config_vector(ldev, queues);
    + eni_vdpa->config_irq = irq;
    +
    + return 0;
    +err:
    + eni_vdpa_free_irq(eni_vdpa);
    + return ret;
    +}
    +
    +static void eni_vdpa_set_status(struct vdpa_device *vdpa, u8 status)
    +{
    + struct eni_vdpa *eni_vdpa = vdpa_to_eni(vdpa);
    + struct virtio_pci_legacy_device *ldev = &eni_vdpa->ldev;
    + u8 s = eni_vdpa_get_status(vdpa);
    +
    + if (status & VIRTIO_CONFIG_S_DRIVER_OK &&
    + !(s & VIRTIO_CONFIG_S_DRIVER_OK)) {
    + eni_vdpa_request_irq(eni_vdpa);
    + }
    +
    + vp_legacy_set_status(ldev, status);
    +
    + if (!(status & VIRTIO_CONFIG_S_DRIVER_OK) &&
    + (s & VIRTIO_CONFIG_S_DRIVER_OK))
    + eni_vdpa_free_irq(eni_vdpa);
    +}
    +
    +static int eni_vdpa_reset(struct vdpa_device *vdpa)
    +{
    + struct eni_vdpa *eni_vdpa = vdpa_to_eni(vdpa);
    + struct virtio_pci_legacy_device *ldev = &eni_vdpa->ldev;
    + u8 s = eni_vdpa_get_status(vdpa);
    +
    + vp_legacy_set_status(ldev, 0);
    +
    + if (s & VIRTIO_CONFIG_S_DRIVER_OK)
    + eni_vdpa_free_irq(eni_vdpa);
    +
    + return 0;
    +}
    +
    +static u16 eni_vdpa_get_vq_num_max(struct vdpa_device *vdpa)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    +
    + return vp_legacy_get_queue_size(ldev, 0);
    +}
    +
    +static u16 eni_vdpa_get_vq_num_min(struct vdpa_device *vdpa)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    +
    + return vp_legacy_get_queue_size(ldev, 0);
    +}
    +
    +static int eni_vdpa_get_vq_state(struct vdpa_device *vdpa, u16 qid,
    + struct vdpa_vq_state *state)
    +{
    + return -EOPNOTSUPP;
    +}
    +
    +static int eni_vdpa_set_vq_state(struct vdpa_device *vdpa, u16 qid,
    + const struct vdpa_vq_state *state)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    + const struct vdpa_vq_state_split *split = &state->split;
    +
    + /* ENI is build upon virtio-pci specfication which not support
    + * to set state of virtqueue. But if the state is equal to the
    + * device initial state by chance, we can let it go.
    + */
    + if (!vp_legacy_get_queue_enable(ldev, qid)
    + && split->avail_index == 0)
    + return 0;
    +
    + return -EOPNOTSUPP;
    +}
    +
    +
    +static void eni_vdpa_set_vq_cb(struct vdpa_device *vdpa, u16 qid,
    + struct vdpa_callback *cb)
    +{
    + struct eni_vdpa *eni_vdpa = vdpa_to_eni(vdpa);
    +
    + eni_vdpa->vring[qid].cb = *cb;
    +}
    +
    +static void eni_vdpa_set_vq_ready(struct vdpa_device *vdpa, u16 qid,
    + bool ready)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    +
    + /* ENI is a legacy virtio-pci device. This is not supported
    + * by specification. But we can disable virtqueue by setting
    + * address to 0.
    + */
    + if (!ready)
    + vp_legacy_set_queue_address(ldev, qid, 0);
    +}
    +
    +static bool eni_vdpa_get_vq_ready(struct vdpa_device *vdpa, u16 qid)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    +
    + return vp_legacy_get_queue_enable(ldev, qid);
    +}
    +
    +static void eni_vdpa_set_vq_num(struct vdpa_device *vdpa, u16 qid,
    + u32 num)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    + struct pci_dev *pdev = ldev->pci_dev;
    + u16 n = vp_legacy_get_queue_size(ldev, qid);
    +
    + /* ENI is a legacy virtio-pci device which not allow to change
    + * virtqueue size. Just report a error if someone tries to
    + * change it.
    + */
    + if (num != n)
    + ENI_ERR(pdev,
    + "not support to set vq %u fixed num %u to %u\n",
    + qid, n, num);
    +}
    +
    +static int eni_vdpa_set_vq_address(struct vdpa_device *vdpa, u16 qid,
    + u64 desc_area, u64 driver_area,
    + u64 device_area)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    + u32 pfn = desc_area >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
    +
    + vp_legacy_set_queue_address(ldev, qid, pfn);
    +
    + return 0;
    +}
    +
    +static void eni_vdpa_kick_vq(struct vdpa_device *vdpa, u16 qid)
    +{
    + struct eni_vdpa *eni_vdpa = vdpa_to_eni(vdpa);
    +
    + iowrite16(qid, eni_vdpa->vring[qid].notify);
    +}
    +
    +static u32 eni_vdpa_get_device_id(struct vdpa_device *vdpa)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    +
    + return ldev->id.device;
    +}
    +
    +static u32 eni_vdpa_get_vendor_id(struct vdpa_device *vdpa)
    +{
    + struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
    +
    + return ldev->id.vendor;
    +}
    +
    +static u32 eni_vdpa_get_vq_align(struct vdpa_device *vdpa)
    +{
    + return PAGE_SIZE;
    +}
    +
    +static size_t eni_vdpa_get_config_size(struct vdpa_device *vdpa)
    +{
    + return sizeof(struct virtio_net_config);
    +}
    +
    +
    +static void eni_vdpa_get_config(struct vdpa_device *vdpa,
    + unsigned int offset,
    + void *buf, unsigned int len)
    +{
    + struct eni_vdpa *eni_vdpa = vdpa_to_eni(vdpa);
    + struct virtio_pci_legacy_device *ldev = &eni_vdpa->ldev;
    + void __iomem *ioaddr = ldev->ioaddr +
    + VIRTIO_PCI_CONFIG_OFF(eni_vdpa->vectors) +
    + offset;
    + u8 *p = buf;
    + int i;
    +
    + for (i = 0; i < len; i++)
    + *p++ = ioread8(ioaddr + i);
    +}
    +
    +static void eni_vdpa_set_config(struct vdpa_device *vdpa,
    + unsigned int offset, const void *buf,
    + unsigned int len)
    +{
    + struct eni_vdpa *eni_vdpa = vdpa_to_eni(vdpa);
    + struct virtio_pci_legacy_device *ldev = &eni_vdpa->ldev;
    + void __iomem *ioaddr = ldev->ioaddr +
    + VIRTIO_PCI_CONFIG_OFF(eni_vdpa->vectors) +
    + offset;
    + const u8 *p = buf;
    + int i;
    +
    + for (i = 0; i < len; i++)
    + iowrite8(*p++, ioaddr + i);
    +}
    +
    +static void eni_vdpa_set_config_cb(struct vdpa_device *vdpa,
    + struct vdpa_callback *cb)
    +{
    + struct eni_vdpa *eni_vdpa = vdpa_to_eni(vdpa);
    +
    + eni_vdpa->config_cb = *cb;
    +}
    +
    +static const struct vdpa_config_ops eni_vdpa_ops = {
    + .get_features = eni_vdpa_get_features,
    + .set_features = eni_vdpa_set_features,
    + .get_status = eni_vdpa_get_status,
    + .set_status = eni_vdpa_set_status,
    + .reset = eni_vdpa_reset,
    + .get_vq_num_max = eni_vdpa_get_vq_num_max,
    + .get_vq_num_min = eni_vdpa_get_vq_num_min,
    + .get_vq_state = eni_vdpa_get_vq_state,
    + .set_vq_state = eni_vdpa_set_vq_state,
    + .set_vq_cb = eni_vdpa_set_vq_cb,
    + .set_vq_ready = eni_vdpa_set_vq_ready,
    + .get_vq_ready = eni_vdpa_get_vq_ready,
    + .set_vq_num = eni_vdpa_set_vq_num,
    + .set_vq_address = eni_vdpa_set_vq_address,
    + .kick_vq = eni_vdpa_kick_vq,
    + .get_device_id = eni_vdpa_get_device_id,
    + .get_vendor_id = eni_vdpa_get_vendor_id,
    + .get_vq_align = eni_vdpa_get_vq_align,
    + .get_config_size = eni_vdpa_get_config_size,
    + .get_config = eni_vdpa_get_config,
    + .set_config = eni_vdpa_set_config,
    + .set_config_cb = eni_vdpa_set_config_cb,
    + .get_vq_irq = eni_vdpa_get_vq_irq,
    +};
    +
    +
    +static u16 eni_vdpa_get_num_queues(struct eni_vdpa *eni_vdpa)
    +{
    + struct virtio_pci_legacy_device *ldev = &eni_vdpa->ldev;
    + u32 features = vp_legacy_get_features(ldev);
    + u16 num = 2;
    +
    + if (features & BIT_ULL(VIRTIO_NET_F_MQ)) {
    + __virtio16 max_virtqueue_pairs;
    +
    + eni_vdpa_get_config(&eni_vdpa->vdpa,
    + offsetof(struct virtio_net_config, max_virtqueue_pairs),
    + &max_virtqueue_pairs,
    + sizeof(max_virtqueue_pairs));
    + num = 2 * __virtio16_to_cpu(virtio_legacy_is_little_endian(),
    + max_virtqueue_pairs);
    + }
    +
    + if (features & BIT_ULL(VIRTIO_NET_F_CTRL_VQ))
    + num += 1;
    +
    + return num;
    +}
    +
    +static void eni_vdpa_free_irq_vectors(void *data)
    +{
    + pci_free_irq_vectors(data);
    +}
    +
    +static int eni_vdpa_probe(struct pci_dev *pdev, const struct pci_device_id *id)
    +{
    + struct device *dev = &pdev->dev;
    + struct eni_vdpa *eni_vdpa;
    + struct virtio_pci_legacy_device *ldev;
    + int ret, i;
    +
    + ret = pcim_enable_device(pdev);
    + if (ret)
    + return ret;
    +
    + eni_vdpa = vdpa_alloc_device(struct eni_vdpa, vdpa,
    + dev, &eni_vdpa_ops, NULL, false);
    + if (IS_ERR(eni_vdpa)) {
    + ENI_ERR(pdev, "failed to allocate vDPA structure\n");
    + return PTR_ERR(eni_vdpa);
    + }
    +
    + ldev = &eni_vdpa->ldev;
    + ldev->pci_dev = pdev;
    +
    + ret = vp_legacy_probe(ldev);
    + if (ret) {
    + ENI_ERR(pdev, "failed to probe legacy PCI device\n");
    + goto err;
    + }
    +
    + pci_set_master(pdev);
    + pci_set_drvdata(pdev, eni_vdpa);
    +
    + eni_vdpa->vdpa.dma_dev = &pdev->dev;
    + eni_vdpa->queues = eni_vdpa_get_num_queues(eni_vdpa);
    +
    + ret = devm_add_action_or_reset(dev, eni_vdpa_free_irq_vectors, pdev);
    + if (ret) {
    + ENI_ERR(pdev,
    + "failed for adding devres for freeing irq vectors\n");
    + goto err;
    + }
    +
    + eni_vdpa->vring = devm_kcalloc(&pdev->dev, eni_vdpa->queues,
    + sizeof(*eni_vdpa->vring),
    + GFP_KERNEL);
    + if (!eni_vdpa->vring) {
    + ret = -ENOMEM;
    + ENI_ERR(pdev, "failed to allocate virtqueues\n");
    + goto err;
    + }
    +
    + for (i = 0; i < eni_vdpa->queues; i++) {
    + eni_vdpa->vring[i].irq = VIRTIO_MSI_NO_VECTOR;
    + eni_vdpa->vring[i].notify = ldev->ioaddr + VIRTIO_PCI_QUEUE_NOTIFY;
    + }
    + eni_vdpa->config_irq = VIRTIO_MSI_NO_VECTOR;
    +
    + ret = vdpa_register_device(&eni_vdpa->vdpa, eni_vdpa->queues);
    + if (ret) {
    + ENI_ERR(pdev, "failed to register to vdpa bus\n");
    + goto err;
    + }
    +
    + return 0;
    +
    +err:
    + put_device(&eni_vdpa->vdpa.dev);
    + return ret;
    +}
    +
    +static void eni_vdpa_remove(struct pci_dev *pdev)
    +{
    + struct eni_vdpa *eni_vdpa = pci_get_drvdata(pdev);
    +
    + vdpa_unregister_device(&eni_vdpa->vdpa);
    + vp_legacy_remove(&eni_vdpa->ldev);
    +}
    +
    +static struct pci_device_id eni_pci_ids[] = {
    + { PCI_DEVICE_SUB(PCI_VENDOR_ID_REDHAT_QUMRANET,
    + VIRTIO_TRANS_ID_NET,
    + PCI_SUBVENDOR_ID_REDHAT_QUMRANET,
    + VIRTIO_ID_NET) },
    + { 0 },
    +};
    +
    +static struct pci_driver eni_vdpa_driver = {
    + .name = "alibaba-eni-vdpa",
    + .id_table = eni_pci_ids,
    + .probe = eni_vdpa_probe,
    + .remove = eni_vdpa_remove,
    +};
    +
    +module_pci_driver(eni_vdpa_driver);
    +
    +MODULE_AUTHOR("Wu Zongyong <wuzongyong@linux.alibaba.com>");
    +MODULE_DESCRIPTION("Alibaba ENI vDPA driver");
    +MODULE_LICENSE("GPL v2");
    --
    2.31.1
    \
     
     \ /
      Last update: 2021-10-22 04:46    [W:4.435 / U:0.216 seconds]
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