53 lines
2.0 KiB
Diff
53 lines
2.0 KiB
Diff
From bc307149fe4e3fe2a3e0ac52534383c955051e7e Mon Sep 17 00:00:00 2001
|
|
From: Si-Wei Liu <si-wei.liu@oracle.com>
|
|
Date: Fri, 6 May 2022 19:28:12 -0700
|
|
Subject: [PATCH 14/24] virtio-net: setup vhost_dev and notifiers for cvq only
|
|
when feature is negotiated
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
RH-Author: Jason Wang <jasowang@redhat.com>
|
|
RH-MergeRequest: 187: Multiqueue fixes for vhost-vDPA
|
|
RH-Commit: [1/7] 38bcfaa661f437b3dfa6b6f152dffd60073dc054
|
|
RH-Bugzilla: 2069946
|
|
RH-Acked-by: Eugenio Pérez <eperezma@redhat.com>
|
|
RH-Acked-by: Cindy Lu <lulu@redhat.com>
|
|
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
|
|
|
|
When the control virtqueue feature is absent or not negotiated,
|
|
vhost_net_start() still tries to set up vhost_dev and install
|
|
vhost notifiers for the control virtqueue, which results in
|
|
erroneous ioctl calls with incorrect queue index sending down
|
|
to driver. Do that only when needed.
|
|
|
|
Fixes: 22288fe ("virtio-net: vhost control virtqueue support")
|
|
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
|
|
Acked-by: Jason Wang <jasowang@redhat.com>
|
|
Message-Id: <1651890498-24478-2-git-send-email-si-wei.liu@oracle.com>
|
|
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
|
|
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
|
|
(cherry picked from commit aa8581945a13712ff3eed0ad3ba7a9664fc1604b)
|
|
Signed-off-by: Jason Wang <jasowang@redhat.com>
|
|
---
|
|
hw/net/virtio-net.c | 3 ++-
|
|
1 file changed, 2 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
|
|
index e1f4748831..ec045c3f41 100644
|
|
--- a/hw/net/virtio-net.c
|
|
+++ b/hw/net/virtio-net.c
|
|
@@ -244,7 +244,8 @@ static void virtio_net_vhost_status(VirtIONet *n, uint8_t status)
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(n);
|
|
NetClientState *nc = qemu_get_queue(n->nic);
|
|
int queue_pairs = n->multiqueue ? n->max_queue_pairs : 1;
|
|
- int cvq = n->max_ncs - n->max_queue_pairs;
|
|
+ int cvq = virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ) ?
|
|
+ n->max_ncs - n->max_queue_pairs : 0;
|
|
|
|
if (!get_vhost_net(nc->peer)) {
|
|
return;
|
|
--
|
|
2.35.3
|
|
|