[RFC v2 04/13] vdpa: Remove the restriction that only supports virtio-net devices
From: Xie Yongji <hidden>
Date: 2020-12-22 14:54:36
Also in:
kvm, linux-fsdevel, linux-mm
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
With VDUSE, we should be able to support all kinds of virtio devices. Signed-off-by: Xie Yongji <redacted> --- drivers/vhost/vdpa.c | 29 +++-------------------------- 1 file changed, 3 insertions(+), 26 deletions(-)
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index 29ed4173f04e..448be7875b6d 100644
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c@@ -22,6 +22,7 @@ #include <linux/nospec.h> #include <linux/vhost.h> #include <linux/virtio_net.h> +#include <linux/virtio_blk.h> #include "vhost.h"
@@ -185,26 +186,6 @@ static long vhost_vdpa_set_status(struct vhost_vdpa *v, u8 __user *statusp) return 0; } -static int vhost_vdpa_config_validate(struct vhost_vdpa *v, - struct vhost_vdpa_config *c) -{ - long size = 0; - - switch (v->virtio_id) { - case VIRTIO_ID_NET: - size = sizeof(struct virtio_net_config); - break; - } - - if (c->len == 0) - return -EINVAL; - - if (c->len > size - c->off) - return -E2BIG; - - return 0; -} - static long vhost_vdpa_get_config(struct vhost_vdpa *v, struct vhost_vdpa_config __user *c) {
@@ -215,7 +196,7 @@ static long vhost_vdpa_get_config(struct vhost_vdpa *v, if (copy_from_user(&config, c, size)) return -EFAULT; - if (vhost_vdpa_config_validate(v, &config)) + if (config.len == 0) return -EINVAL; buf = kvzalloc(config.len, GFP_KERNEL); if (!buf)
@@ -243,7 +224,7 @@ static long vhost_vdpa_set_config(struct vhost_vdpa *v, if (copy_from_user(&config, c, size)) return -EFAULT; - if (vhost_vdpa_config_validate(v, &config)) + if (config.len == 0) return -EINVAL; buf = kvzalloc(config.len, GFP_KERNEL); if (!buf)
@@ -1025,10 +1006,6 @@ static int vhost_vdpa_probe(struct vdpa_device *vdpa) int minor; int r; - /* Currently, we only accept the network devices. */ - if (ops->get_device_id(vdpa) != VIRTIO_ID_NET) - return -ENOTSUPP; - v = kzalloc(sizeof(*v), GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (!v) return -ENOMEM;
--
2.11.0