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ACRN: DM: Expose the vhost kernel ioctrl API

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The patch expose the vhost kernel ioctrl API and remove the virtio_net
operation functions to the virtio_net code module.

Tracked-On: #7456
Signed-off-by: Liu Long <long.liu@linux.intel.com>
Reviewed-by: Conghui <conghui.chen@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
This commit is contained in:
Liu Long 2022-05-11 09:55:16 +08:00 committed by acrnsi-robot
parent 3afb222d90
commit 231f986bd9
3 changed files with 41 additions and 57 deletions
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45
devicemodel/hw/pci/virtio/vhost.c
View File

@ -31,7 +31,7 @@ static int vhost_debug;
do { if (vhost_debug) pr_dbg(LOG_TAG fmt, ##args); } while (0)
#define WPRINTF(fmt, args...) pr_err(LOG_TAG fmt, ##args)
static inline
inline
int vhost_kernel_ioctl(struct vhost_dev *vdev,
unsigned long int request,
void *arg)
@ -154,13 +154,6 @@ vhost_kernel_reset_device(struct vhost_dev *vdev)
return vhost_kernel_ioctl(vdev, VHOST_RESET_OWNER, NULL);
}
static int
vhost_kernel_net_set_backend(struct vhost_dev *vdev,
struct vhost_vring_file *file)
{
return vhost_kernel_ioctl(vdev, VHOST_NET_SET_BACKEND, file);
}
static int
vhost_eventfd_test_and_clear(int fd)
{
@ -772,39 +765,3 @@ vhost_dev_stop(struct vhost_dev *vdev)
vdev->started = false;
return rc;
}
/**
* @brief set backend fd of vhost net.
*
* This interface is called to set the backend fd (for example tap fd)
* to vhost.
*
* @param vdev Pointer to struct vhost_dev.
* @param backend_fd fd of backend (for example tap fd).
*
* @return 0 on success and -1 on failure.
*/
int
vhost_net_set_backend(struct vhost_dev *vdev, int backend_fd)
{
struct vhost_vring_file file;
int rc, i;
file.fd = backend_fd;
for (i = 0; i < vdev->nvqs; i++) {
file.index = i;
rc = vhost_kernel_net_set_backend(vdev, &file);
if (rc < 0)
goto fail;
}
return 0;
fail:
file.fd = -1;
while (--i >= 0) {
file.index = i;
vhost_kernel_net_set_backend(vdev, &file);
}
return -1;
}

35
devicemodel/hw/pci/virtio/virtio_net.c
View File

@ -43,6 +43,7 @@
#include <net/if.h>
#include <linux/if_tun.h>
#include <sys/socket.h>
#include <linux/vhost.h>
#include "dm.h"
#include "pci_core.h"
@ -76,8 +77,6 @@
#define VIRTIO_NET_F_CTRL_VLAN (1 << 19) /* control channel VLAN filtering */
#define VIRTIO_NET_F_GUEST_ANNOUNCE \
(1 << 21) /* guest can send gratuitous pkts */
#define VHOST_NET_F_VIRTIO_NET_HDR \
(1 << 27) /* vhost provides virtio_net_hdr */
#define VIRTIO_NET_S_HOSTCAPS \
(VIRTIO_NET_F_MAC | VIRTIO_NET_F_MRG_RXBUF | VIRTIO_NET_F_STATUS | \
@ -202,6 +201,38 @@ static struct virtio_ops virtio_net_ops = {
virtio_net_set_status, /* called on guest set status */
};
static int
vhost_kernel_net_set_backend(struct vhost_dev *vdev,
struct vhost_vring_file *file)
{
return vhost_kernel_ioctl(vdev, VHOST_NET_SET_BACKEND, file);
}
int
vhost_net_set_backend(struct vhost_dev *vdev, int backend_fd)
{
struct vhost_vring_file file;
int rc, i;
file.fd = backend_fd;
for (i = 0; i < vdev->nvqs; i++) {
file.index = i;
rc = vhost_kernel_net_set_backend(vdev, &file);
if (rc < 0)
goto fail;
}
return 0;
fail:
file.fd = -1;
while (--i >= 0) {
file.index = i;
vhost_kernel_net_set_backend(vdev, &file);
}
return -1;
}
static struct ether_addr *
ether_aton(const char *a, struct ether_addr *e)
{

18
devicemodel/include/vhost.h
View File

@ -132,19 +132,15 @@ int vhost_dev_start(struct vhost_dev *vdev);
int vhost_dev_stop(struct vhost_dev *vdev);
/**
* @brief set backend fd of vhost net.
* @brief vhost kernel dev ioctrl function
*
* This interface is called to set the backend fd (for example tap fd)
* to vhost.
* This interface is used to operation the vhost dev kernel.
*
* @param vdev Pointer to struct vhost_dev.
* @param backend_fd fd of backend (for example tap fd).
* @param vdev Pointer to struct vhost_dev
* @param The request to vhost kernel
* @param The arguments of vhost kernel operation
*
* @return 0 on success and -1 on failure.
*/
int vhost_net_set_backend(struct vhost_dev *vdev, int backend_fd);
/**
* @}
* @return 0 on success and -1 on failure
*/
int vhost_kernel_ioctl(struct vhost_dev *vdev, unsigned long int request, void *arg);
#endif