vdpa: split vdpasim to core and net modules
Introduce new vdpa_sim_net and vdpa_sim (core) drivers. This is a preparation for adding a vdpa simulator module for block devices. Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com> [sgarzare: various cleanups/fixes] Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20201215144256.155342-19-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Max Gurtovoy
Michael S. Tsirkin
Родитель
275900dfa1
Коммит
db1e8bb6c6
|
|
@ -9,15 +9,20 @@ menuconfig VDPA
|
|||
if VDPA
|
||||
|
||||
config VDPA_SIM
|
||||
tristate "vDPA device simulator"
|
||||
tristate "vDPA device simulator core"
|
||||
depends on RUNTIME_TESTING_MENU && HAS_DMA
|
||||
select DMA_OPS
|
||||
select VHOST_RING
|
||||
help
|
||||
Enable this module to support vDPA device simulators. These devices
|
||||
are used for testing, prototyping and development of vDPA.
|
||||
|
||||
config VDPA_SIM_NET
|
||||
tristate "vDPA simulator for networking device"
|
||||
depends on VDPA_SIM
|
||||
select GENERIC_NET_UTILS
|
||||
help
|
||||
vDPA networking device simulator which loop TX traffic back
|
||||
to RX. This device is used for testing, prototyping and
|
||||
development of vDPA.
|
||||
vDPA networking device simulator which loops TX traffic back to RX.
|
||||
|
||||
config IFCVF
|
||||
tristate "Intel IFC VF vDPA driver"
|
||||
|
|
|
|||
|
|
@ -1,2 +1,3 @@
|
|||
# SPDX-License-Identifier: GPL-2.0
|
||||
obj-$(CONFIG_VDPA_SIM) += vdpa_sim.o
|
||||
obj-$(CONFIG_VDPA_SIM_NET) += vdpa_sim_net.o
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* VDPA networking device simulator.
|
||||
* VDPA device simulator core.
|
||||
*
|
||||
* Copyright (c) 2020, Red Hat Inc. All rights reserved.
|
||||
* Author: Jason Wang <jasowang@redhat.com>
|
||||
|
|
@ -14,17 +14,15 @@
|
|||
#include <linux/slab.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/dma-map-ops.h>
|
||||
#include <linux/etherdevice.h>
|
||||
#include <linux/vringh.h>
|
||||
#include <linux/vdpa.h>
|
||||
#include <linux/virtio_byteorder.h>
|
||||
#include <linux/vhost_iotlb.h>
|
||||
#include <uapi/linux/virtio_config.h>
|
||||
#include <uapi/linux/virtio_net.h>
|
||||
|
||||
#include "vdpa_sim.h"
|
||||
|
||||
#define DRV_VERSION "0.1"
|
||||
#define DRV_AUTHOR "Jason Wang <jasowang@redhat.com>"
|
||||
#define DRV_DESC "vDPA Device Simulator"
|
||||
#define DRV_DESC "vDPA Device Simulator core"
|
||||
#define DRV_LICENSE "GPL v2"
|
||||
|
||||
static int batch_mapping = 1;
|
||||
|
|
@ -36,90 +34,9 @@ module_param(max_iotlb_entries, int, 0444);
|
|||
MODULE_PARM_DESC(max_iotlb_entries,
|
||||
"Maximum number of iotlb entries. 0 means unlimited. (default: 2048)");
|
||||
|
||||
static char *macaddr;
|
||||
module_param(macaddr, charp, 0);
|
||||
MODULE_PARM_DESC(macaddr, "Ethernet MAC address");
|
||||
|
||||
u8 macaddr_buf[ETH_ALEN];
|
||||
|
||||
struct vdpasim_virtqueue {
|
||||
struct vringh vring;
|
||||
struct vringh_kiov in_iov;
|
||||
struct vringh_kiov out_iov;
|
||||
unsigned short head;
|
||||
bool ready;
|
||||
u64 desc_addr;
|
||||
u64 device_addr;
|
||||
u64 driver_addr;
|
||||
u32 num;
|
||||
void *private;
|
||||
irqreturn_t (*cb)(void *data);
|
||||
};
|
||||
|
||||
#define VDPASIM_QUEUE_ALIGN PAGE_SIZE
|
||||
#define VDPASIM_QUEUE_MAX 256
|
||||
#define VDPASIM_VENDOR_ID 0
|
||||
#define VDPASIM_VQ_NUM 0x2
|
||||
#define VDPASIM_NAME "vdpasim-netdev"
|
||||
|
||||
#define VDPASIM_FEATURES ((1ULL << VIRTIO_F_ANY_LAYOUT) | \
|
||||
(1ULL << VIRTIO_F_VERSION_1) | \
|
||||
(1ULL << VIRTIO_F_ACCESS_PLATFORM))
|
||||
|
||||
#define VDPASIM_NET_FEATURES (VDPASIM_FEATURES | \
|
||||
(1ULL << VIRTIO_NET_F_MAC))
|
||||
|
||||
struct vdpasim;
|
||||
|
||||
struct vdpasim_dev_attr {
|
||||
u64 supported_features;
|
||||
size_t config_size;
|
||||
size_t buffer_size;
|
||||
int nvqs;
|
||||
u32 id;
|
||||
|
||||
work_func_t work_fn;
|
||||
void (*get_config)(struct vdpasim *vdpasim, void *config);
|
||||
void (*set_config)(struct vdpasim *vdpasim, const void *config);
|
||||
};
|
||||
|
||||
/* State of each vdpasim device */
|
||||
struct vdpasim {
|
||||
struct vdpa_device vdpa;
|
||||
struct vdpasim_virtqueue *vqs;
|
||||
struct work_struct work;
|
||||
struct vdpasim_dev_attr dev_attr;
|
||||
/* spinlock to synchronize virtqueue state */
|
||||
spinlock_t lock;
|
||||
/* virtio config according to device type */
|
||||
void *config;
|
||||
struct vhost_iotlb *iommu;
|
||||
void *buffer;
|
||||
u32 status;
|
||||
u32 generation;
|
||||
u64 features;
|
||||
/* spinlock to synchronize iommu table */
|
||||
spinlock_t iommu_lock;
|
||||
};
|
||||
|
||||
/* TODO: cross-endian support */
|
||||
static inline bool vdpasim_is_little_endian(struct vdpasim *vdpasim)
|
||||
{
|
||||
return virtio_legacy_is_little_endian() ||
|
||||
(vdpasim->features & (1ULL << VIRTIO_F_VERSION_1));
|
||||
}
|
||||
|
||||
static inline u16 vdpasim16_to_cpu(struct vdpasim *vdpasim, __virtio16 val)
|
||||
{
|
||||
return __virtio16_to_cpu(vdpasim_is_little_endian(vdpasim), val);
|
||||
}
|
||||
|
||||
static inline __virtio16 cpu_to_vdpasim16(struct vdpasim *vdpasim, u16 val)
|
||||
{
|
||||
return __cpu_to_virtio16(vdpasim_is_little_endian(vdpasim), val);
|
||||
}
|
||||
|
||||
static struct vdpasim *vdpasim_dev;
|
||||
|
||||
static struct vdpasim *vdpa_to_sim(struct vdpa_device *vdpa)
|
||||
{
|
||||
|
|
@ -190,80 +107,6 @@ static void vdpasim_reset(struct vdpasim *vdpasim)
|
|||
++vdpasim->generation;
|
||||
}
|
||||
|
||||
static void vdpasim_net_work(struct work_struct *work)
|
||||
{
|
||||
struct vdpasim *vdpasim = container_of(work, struct
|
||||
vdpasim, work);
|
||||
struct vdpasim_virtqueue *txq = &vdpasim->vqs[1];
|
||||
struct vdpasim_virtqueue *rxq = &vdpasim->vqs[0];
|
||||
ssize_t read, write;
|
||||
size_t total_write;
|
||||
int pkts = 0;
|
||||
int err;
|
||||
|
||||
spin_lock(&vdpasim->lock);
|
||||
|
||||
if (!(vdpasim->status & VIRTIO_CONFIG_S_DRIVER_OK))
|
||||
goto out;
|
||||
|
||||
if (!txq->ready || !rxq->ready)
|
||||
goto out;
|
||||
|
||||
while (true) {
|
||||
total_write = 0;
|
||||
err = vringh_getdesc_iotlb(&txq->vring, &txq->out_iov, NULL,
|
||||
&txq->head, GFP_ATOMIC);
|
||||
if (err <= 0)
|
||||
break;
|
||||
|
||||
err = vringh_getdesc_iotlb(&rxq->vring, NULL, &rxq->in_iov,
|
||||
&rxq->head, GFP_ATOMIC);
|
||||
if (err <= 0) {
|
||||
vringh_complete_iotlb(&txq->vring, txq->head, 0);
|
||||
break;
|
||||
}
|
||||
|
||||
while (true) {
|
||||
read = vringh_iov_pull_iotlb(&txq->vring, &txq->out_iov,
|
||||
vdpasim->buffer,
|
||||
PAGE_SIZE);
|
||||
if (read <= 0)
|
||||
break;
|
||||
|
||||
write = vringh_iov_push_iotlb(&rxq->vring, &rxq->in_iov,
|
||||
vdpasim->buffer, read);
|
||||
if (write <= 0)
|
||||
break;
|
||||
|
||||
total_write += write;
|
||||
}
|
||||
|
||||
/* Make sure data is wrote before advancing index */
|
||||
smp_wmb();
|
||||
|
||||
vringh_complete_iotlb(&txq->vring, txq->head, 0);
|
||||
vringh_complete_iotlb(&rxq->vring, rxq->head, total_write);
|
||||
|
||||
/* Make sure used is visible before rasing the interrupt. */
|
||||
smp_wmb();
|
||||
|
||||
local_bh_disable();
|
||||
if (vringh_need_notify_iotlb(&txq->vring) > 0)
|
||||
vringh_notify(&txq->vring);
|
||||
if (vringh_need_notify_iotlb(&rxq->vring) > 0)
|
||||
vringh_notify(&rxq->vring);
|
||||
local_bh_enable();
|
||||
|
||||
if (++pkts > 4) {
|
||||
schedule_work(&vdpasim->work);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
out:
|
||||
spin_unlock(&vdpasim->lock);
|
||||
}
|
||||
|
||||
static int dir_to_perm(enum dma_data_direction dir)
|
||||
{
|
||||
int perm = -EFAULT;
|
||||
|
|
@ -379,7 +222,7 @@ static const struct dma_map_ops vdpasim_dma_ops = {
|
|||
static const struct vdpa_config_ops vdpasim_config_ops;
|
||||
static const struct vdpa_config_ops vdpasim_batch_config_ops;
|
||||
|
||||
static struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr)
|
||||
struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr)
|
||||
{
|
||||
const struct vdpa_config_ops *ops;
|
||||
struct vdpasim *vdpasim;
|
||||
|
|
@ -424,23 +267,10 @@ static struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr)
|
|||
if (!vdpasim->buffer)
|
||||
goto err_iommu;
|
||||
|
||||
if (macaddr) {
|
||||
mac_pton(macaddr, macaddr_buf);
|
||||
if (!is_valid_ether_addr(macaddr_buf)) {
|
||||
ret = -EADDRNOTAVAIL;
|
||||
goto err_iommu;
|
||||
}
|
||||
} else {
|
||||
eth_random_addr(macaddr_buf);
|
||||
}
|
||||
|
||||
for (i = 0; i < dev_attr->nvqs; i++)
|
||||
vringh_set_iotlb(&vdpasim->vqs[i].vring, vdpasim->iommu);
|
||||
|
||||
vdpasim->vdpa.dma_dev = dev;
|
||||
ret = vdpa_register_device(&vdpasim->vdpa);
|
||||
if (ret)
|
||||
goto err_iommu;
|
||||
|
||||
return vdpasim;
|
||||
|
||||
|
|
@ -449,6 +279,7 @@ err_iommu:
|
|||
err_alloc:
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(vdpasim_create);
|
||||
|
||||
static int vdpasim_set_vq_address(struct vdpa_device *vdpa, u16 idx,
|
||||
u64 desc_area, u64 driver_area,
|
||||
|
|
@ -769,46 +600,6 @@ static const struct vdpa_config_ops vdpasim_batch_config_ops = {
|
|||
.free = vdpasim_free,
|
||||
};
|
||||
|
||||
static void vdpasim_net_get_config(struct vdpasim *vdpasim, void *config)
|
||||
{
|
||||
struct virtio_net_config *net_config =
|
||||
(struct virtio_net_config *)config;
|
||||
|
||||
net_config->mtu = cpu_to_vdpasim16(vdpasim, 1500);
|
||||
net_config->status = cpu_to_vdpasim16(vdpasim, VIRTIO_NET_S_LINK_UP);
|
||||
memcpy(net_config->mac, macaddr_buf, ETH_ALEN);
|
||||
}
|
||||
|
||||
static int __init vdpasim_dev_init(void)
|
||||
{
|
||||
struct vdpasim_dev_attr dev_attr = {};
|
||||
|
||||
dev_attr.id = VIRTIO_ID_NET;
|
||||
dev_attr.supported_features = VDPASIM_NET_FEATURES;
|
||||
dev_attr.nvqs = VDPASIM_VQ_NUM;
|
||||
dev_attr.config_size = sizeof(struct virtio_net_config);
|
||||
dev_attr.get_config = vdpasim_net_get_config;
|
||||
dev_attr.work_fn = vdpasim_net_work;
|
||||
dev_attr.buffer_size = PAGE_SIZE;
|
||||
|
||||
vdpasim_dev = vdpasim_create(&dev_attr);
|
||||
|
||||
if (!IS_ERR(vdpasim_dev))
|
||||
return 0;
|
||||
|
||||
return PTR_ERR(vdpasim_dev);
|
||||
}
|
||||
|
||||
static void __exit vdpasim_dev_exit(void)
|
||||
{
|
||||
struct vdpa_device *vdpa = &vdpasim_dev->vdpa;
|
||||
|
||||
vdpa_unregister_device(vdpa);
|
||||
}
|
||||
|
||||
module_init(vdpasim_dev_init)
|
||||
module_exit(vdpasim_dev_exit)
|
||||
|
||||
MODULE_VERSION(DRV_VERSION);
|
||||
MODULE_LICENSE(DRV_LICENSE);
|
||||
MODULE_AUTHOR(DRV_AUTHOR);
|
||||
|
|
|
|||
|
|
@ -0,0 +1,105 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Copyright (c) 2020, Red Hat Inc. All rights reserved.
|
||||
*/
|
||||
|
||||
#ifndef _VDPA_SIM_H
|
||||
#define _VDPA_SIM_H
|
||||
|
||||
#include <linux/vringh.h>
|
||||
#include <linux/vdpa.h>
|
||||
#include <linux/virtio_byteorder.h>
|
||||
#include <linux/vhost_iotlb.h>
|
||||
#include <uapi/linux/virtio_config.h>
|
||||
|
||||
#define VDPASIM_FEATURES ((1ULL << VIRTIO_F_ANY_LAYOUT) | \
|
||||
(1ULL << VIRTIO_F_VERSION_1) | \
|
||||
(1ULL << VIRTIO_F_ACCESS_PLATFORM))
|
||||
|
||||
struct vdpasim;
|
||||
|
||||
struct vdpasim_virtqueue {
|
||||
struct vringh vring;
|
||||
struct vringh_kiov in_iov;
|
||||
struct vringh_kiov out_iov;
|
||||
unsigned short head;
|
||||
bool ready;
|
||||
u64 desc_addr;
|
||||
u64 device_addr;
|
||||
u64 driver_addr;
|
||||
u32 num;
|
||||
void *private;
|
||||
irqreturn_t (*cb)(void *data);
|
||||
};
|
||||
|
||||
struct vdpasim_dev_attr {
|
||||
u64 supported_features;
|
||||
size_t config_size;
|
||||
size_t buffer_size;
|
||||
int nvqs;
|
||||
u32 id;
|
||||
|
||||
work_func_t work_fn;
|
||||
void (*get_config)(struct vdpasim *vdpasim, void *config);
|
||||
void (*set_config)(struct vdpasim *vdpasim, const void *config);
|
||||
};
|
||||
|
||||
/* State of each vdpasim device */
|
||||
struct vdpasim {
|
||||
struct vdpa_device vdpa;
|
||||
struct vdpasim_virtqueue *vqs;
|
||||
struct work_struct work;
|
||||
struct vdpasim_dev_attr dev_attr;
|
||||
/* spinlock to synchronize virtqueue state */
|
||||
spinlock_t lock;
|
||||
/* virtio config according to device type */
|
||||
void *config;
|
||||
struct vhost_iotlb *iommu;
|
||||
void *buffer;
|
||||
u32 status;
|
||||
u32 generation;
|
||||
u64 features;
|
||||
/* spinlock to synchronize iommu table */
|
||||
spinlock_t iommu_lock;
|
||||
};
|
||||
|
||||
struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *attr);
|
||||
|
||||
/* TODO: cross-endian support */
|
||||
static inline bool vdpasim_is_little_endian(struct vdpasim *vdpasim)
|
||||
{
|
||||
return virtio_legacy_is_little_endian() ||
|
||||
(vdpasim->features & (1ULL << VIRTIO_F_VERSION_1));
|
||||
}
|
||||
|
||||
static inline u16 vdpasim16_to_cpu(struct vdpasim *vdpasim, __virtio16 val)
|
||||
{
|
||||
return __virtio16_to_cpu(vdpasim_is_little_endian(vdpasim), val);
|
||||
}
|
||||
|
||||
static inline __virtio16 cpu_to_vdpasim16(struct vdpasim *vdpasim, u16 val)
|
||||
{
|
||||
return __cpu_to_virtio16(vdpasim_is_little_endian(vdpasim), val);
|
||||
}
|
||||
|
||||
static inline u32 vdpasim32_to_cpu(struct vdpasim *vdpasim, __virtio32 val)
|
||||
{
|
||||
return __virtio32_to_cpu(vdpasim_is_little_endian(vdpasim), val);
|
||||
}
|
||||
|
||||
static inline __virtio32 cpu_to_vdpasim32(struct vdpasim *vdpasim, u32 val)
|
||||
{
|
||||
return __cpu_to_virtio32(vdpasim_is_little_endian(vdpasim), val);
|
||||
}
|
||||
|
||||
static inline u64 vdpasim64_to_cpu(struct vdpasim *vdpasim, __virtio64 val)
|
||||
{
|
||||
return __virtio64_to_cpu(vdpasim_is_little_endian(vdpasim), val);
|
||||
}
|
||||
|
||||
static inline __virtio64 cpu_to_vdpasim64(struct vdpasim *vdpasim, u64 val)
|
||||
{
|
||||
return __cpu_to_virtio64(vdpasim_is_little_endian(vdpasim), val);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,177 @@
|
|||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* VDPA simulator for networking device.
|
||||
*
|
||||
* Copyright (c) 2020, Red Hat Inc. All rights reserved.
|
||||
* Author: Jason Wang <jasowang@redhat.com>
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/etherdevice.h>
|
||||
#include <linux/vringh.h>
|
||||
#include <linux/vdpa.h>
|
||||
#include <uapi/linux/virtio_net.h>
|
||||
|
||||
#include "vdpa_sim.h"
|
||||
|
||||
#define DRV_VERSION "0.1"
|
||||
#define DRV_AUTHOR "Jason Wang <jasowang@redhat.com>"
|
||||
#define DRV_DESC "vDPA Device Simulator for networking device"
|
||||
#define DRV_LICENSE "GPL v2"
|
||||
|
||||
#define VDPASIM_NET_FEATURES (VDPASIM_FEATURES | \
|
||||
(1ULL << VIRTIO_NET_F_MAC))
|
||||
|
||||
#define VDPASIM_NET_VQ_NUM 2
|
||||
|
||||
static char *macaddr;
|
||||
module_param(macaddr, charp, 0);
|
||||
MODULE_PARM_DESC(macaddr, "Ethernet MAC address");
|
||||
|
||||
u8 macaddr_buf[ETH_ALEN];
|
||||
|
||||
static struct vdpasim *vdpasim_net_dev;
|
||||
|
||||
static void vdpasim_net_work(struct work_struct *work)
|
||||
{
|
||||
struct vdpasim *vdpasim = container_of(work, struct vdpasim, work);
|
||||
struct vdpasim_virtqueue *txq = &vdpasim->vqs[1];
|
||||
struct vdpasim_virtqueue *rxq = &vdpasim->vqs[0];
|
||||
ssize_t read, write;
|
||||
size_t total_write;
|
||||
int pkts = 0;
|
||||
int err;
|
||||
|
||||
spin_lock(&vdpasim->lock);
|
||||
|
||||
if (!(vdpasim->status & VIRTIO_CONFIG_S_DRIVER_OK))
|
||||
goto out;
|
||||
|
||||
if (!txq->ready || !rxq->ready)
|
||||
goto out;
|
||||
|
||||
while (true) {
|
||||
total_write = 0;
|
||||
err = vringh_getdesc_iotlb(&txq->vring, &txq->out_iov, NULL,
|
||||
&txq->head, GFP_ATOMIC);
|
||||
if (err <= 0)
|
||||
break;
|
||||
|
||||
err = vringh_getdesc_iotlb(&rxq->vring, NULL, &rxq->in_iov,
|
||||
&rxq->head, GFP_ATOMIC);
|
||||
if (err <= 0) {
|
||||
vringh_complete_iotlb(&txq->vring, txq->head, 0);
|
||||
break;
|
||||
}
|
||||
|
||||
while (true) {
|
||||
read = vringh_iov_pull_iotlb(&txq->vring, &txq->out_iov,
|
||||
vdpasim->buffer,
|
||||
PAGE_SIZE);
|
||||
if (read <= 0)
|
||||
break;
|
||||
|
||||
write = vringh_iov_push_iotlb(&rxq->vring, &rxq->in_iov,
|
||||
vdpasim->buffer, read);
|
||||
if (write <= 0)
|
||||
break;
|
||||
|
||||
total_write += write;
|
||||
}
|
||||
|
||||
/* Make sure data is wrote before advancing index */
|
||||
smp_wmb();
|
||||
|
||||
vringh_complete_iotlb(&txq->vring, txq->head, 0);
|
||||
vringh_complete_iotlb(&rxq->vring, rxq->head, total_write);
|
||||
|
||||
/* Make sure used is visible before rasing the interrupt. */
|
||||
smp_wmb();
|
||||
|
||||
local_bh_disable();
|
||||
if (vringh_need_notify_iotlb(&txq->vring) > 0)
|
||||
vringh_notify(&txq->vring);
|
||||
if (vringh_need_notify_iotlb(&rxq->vring) > 0)
|
||||
vringh_notify(&rxq->vring);
|
||||
local_bh_enable();
|
||||
|
||||
if (++pkts > 4) {
|
||||
schedule_work(&vdpasim->work);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
out:
|
||||
spin_unlock(&vdpasim->lock);
|
||||
}
|
||||
|
||||
static void vdpasim_net_get_config(struct vdpasim *vdpasim, void *config)
|
||||
{
|
||||
struct virtio_net_config *net_config =
|
||||
(struct virtio_net_config *)config;
|
||||
|
||||
net_config->mtu = cpu_to_vdpasim16(vdpasim, 1500);
|
||||
net_config->status = cpu_to_vdpasim16(vdpasim, VIRTIO_NET_S_LINK_UP);
|
||||
memcpy(net_config->mac, macaddr_buf, ETH_ALEN);
|
||||
}
|
||||
|
||||
static int __init vdpasim_net_init(void)
|
||||
{
|
||||
struct vdpasim_dev_attr dev_attr = {};
|
||||
int ret;
|
||||
|
||||
if (macaddr) {
|
||||
mac_pton(macaddr, macaddr_buf);
|
||||
if (!is_valid_ether_addr(macaddr_buf)) {
|
||||
ret = -EADDRNOTAVAIL;
|
||||
goto out;
|
||||
}
|
||||
} else {
|
||||
eth_random_addr(macaddr_buf);
|
||||
}
|
||||
|
||||
dev_attr.id = VIRTIO_ID_NET;
|
||||
dev_attr.supported_features = VDPASIM_NET_FEATURES;
|
||||
dev_attr.nvqs = VDPASIM_NET_VQ_NUM;
|
||||
dev_attr.config_size = sizeof(struct virtio_net_config);
|
||||
dev_attr.get_config = vdpasim_net_get_config;
|
||||
dev_attr.work_fn = vdpasim_net_work;
|
||||
dev_attr.buffer_size = PAGE_SIZE;
|
||||
|
||||
vdpasim_net_dev = vdpasim_create(&dev_attr);
|
||||
if (IS_ERR(vdpasim_net_dev)) {
|
||||
ret = PTR_ERR(vdpasim_net_dev);
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = vdpa_register_device(&vdpasim_net_dev->vdpa);
|
||||
if (ret)
|
||||
goto put_dev;
|
||||
|
||||
return 0;
|
||||
|
||||
put_dev:
|
||||
put_device(&vdpasim_net_dev->vdpa.dev);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit vdpasim_net_exit(void)
|
||||
{
|
||||
struct vdpa_device *vdpa = &vdpasim_net_dev->vdpa;
|
||||
|
||||
vdpa_unregister_device(vdpa);
|
||||
}
|
||||
|
||||
module_init(vdpasim_net_init);
|
||||
module_exit(vdpasim_net_exit);
|
||||
|
||||
MODULE_VERSION(DRV_VERSION);
|
||||
MODULE_LICENSE(DRV_LICENSE);
|
||||
MODULE_AUTHOR(DRV_AUTHOR);
|
||||
MODULE_DESCRIPTION(DRV_DESC);
|
||||
Загрузка…
Ссылка в новой задаче