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authorEugenio Pérez <eperezma@redhat.com>2022-09-06 17:07:14 +0200
committerJason Wang <jasowang@redhat.com>2022-09-27 15:13:55 +0800
commit17fb889f8a63ceba94d02d21781750b48e0705a6 (patch)
treeef0d5e164853e323d171da385597d87355f041a9 /net
parent8dc2779180f0cadd7df93a946b84c8117955d299 (diff)
downloadqemu-17fb889f8a63ceba94d02d21781750b48e0705a6.zip
qemu-17fb889f8a63ceba94d02d21781750b48e0705a6.tar.gz
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vdpa: Make VhostVDPAState cvq_cmd_in_buffer control ack type
This allows to simplify the code. Rename to status while we're at it. Signed-off-by: Eugenio Pérez <eperezma@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'net')
-rw-r--r--net/vhost-vdpa.c23
1 files changed, 12 insertions, 11 deletions
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 6ce68fc..535315c 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -35,7 +35,9 @@ typedef struct VhostVDPAState {
VHostNetState *vhost_net;
/* Control commands shadow buffers */
- void *cvq_cmd_out_buffer, *cvq_cmd_in_buffer;
+ void *cvq_cmd_out_buffer;
+ virtio_net_ctrl_ack *status;
+
bool started;
} VhostVDPAState;
@@ -158,7 +160,7 @@ static void vhost_vdpa_cleanup(NetClientState *nc)
struct vhost_dev *dev = &s->vhost_net->dev;
qemu_vfree(s->cvq_cmd_out_buffer);
- qemu_vfree(s->cvq_cmd_in_buffer);
+ qemu_vfree(s->status);
if (dev->vq_index + dev->nvqs == dev->vq_index_end) {
g_clear_pointer(&s->vhost_vdpa.iova_tree, vhost_iova_tree_delete);
}
@@ -310,7 +312,7 @@ static int vhost_vdpa_net_cvq_start(NetClientState *nc)
return r;
}
- r = vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, s->cvq_cmd_in_buffer,
+ r = vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, s->status,
vhost_vdpa_net_cvq_cmd_page_len(), true);
if (unlikely(r < 0)) {
vhost_vdpa_cvq_unmap_buf(&s->vhost_vdpa, s->cvq_cmd_out_buffer);
@@ -327,7 +329,7 @@ static void vhost_vdpa_net_cvq_stop(NetClientState *nc)
if (s->vhost_vdpa.shadow_vqs_enabled) {
vhost_vdpa_cvq_unmap_buf(&s->vhost_vdpa, s->cvq_cmd_out_buffer);
- vhost_vdpa_cvq_unmap_buf(&s->vhost_vdpa, s->cvq_cmd_in_buffer);
+ vhost_vdpa_cvq_unmap_buf(&s->vhost_vdpa, s->status);
}
}
@@ -340,7 +342,7 @@ static ssize_t vhost_vdpa_net_cvq_add(VhostVDPAState *s, size_t out_len,
.iov_len = out_len,
};
const struct iovec in = {
- .iov_base = s->cvq_cmd_in_buffer,
+ .iov_base = s->status,
.iov_len = sizeof(virtio_net_ctrl_ack),
};
VhostShadowVirtqueue *svq = g_ptr_array_index(s->vhost_vdpa.shadow_vqs, 0);
@@ -396,7 +398,7 @@ static int vhost_vdpa_net_load(NetClientState *nc)
return dev_written;
}
- return *((virtio_net_ctrl_ack *)s->cvq_cmd_in_buffer) != VIRTIO_NET_OK;
+ return *s->status != VIRTIO_NET_OK;
}
return 0;
@@ -491,8 +493,7 @@ static int vhost_vdpa_net_handle_ctrl_avail(VhostShadowVirtqueue *svq,
goto out;
}
- memcpy(&status, s->cvq_cmd_in_buffer, sizeof(status));
- if (status != VIRTIO_NET_OK) {
+ if (*s->status != VIRTIO_NET_OK) {
return VIRTIO_NET_ERR;
}
@@ -549,9 +550,9 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer,
s->cvq_cmd_out_buffer = qemu_memalign(qemu_real_host_page_size(),
vhost_vdpa_net_cvq_cmd_page_len());
memset(s->cvq_cmd_out_buffer, 0, vhost_vdpa_net_cvq_cmd_page_len());
- s->cvq_cmd_in_buffer = qemu_memalign(qemu_real_host_page_size(),
- vhost_vdpa_net_cvq_cmd_page_len());
- memset(s->cvq_cmd_in_buffer, 0, vhost_vdpa_net_cvq_cmd_page_len());
+ s->status = qemu_memalign(qemu_real_host_page_size(),
+ vhost_vdpa_net_cvq_cmd_page_len());
+ memset(s->status, 0, vhost_vdpa_net_cvq_cmd_page_len());
s->vhost_vdpa.shadow_vq_ops = &vhost_vdpa_net_svq_ops;
s->vhost_vdpa.shadow_vq_ops_opaque = s;