From: Victor Kaplansky <vict...@redhat.com>
The VHOST_USER_SET_VRING_ENABLE request was sent for each queue-pair.
However, it's changed to be sent per queue in the queue-pair by QEMU
commit dc3db6ad ("vhost-user: start/stop all rings"). The change
is reasonable, as we send all other request per queue, instead of
queue-pair.
Hence we should do proper changes to adapt to the QEMU change here.
Otherwise, a segfault will be triggered when last TX queue was enabled.
[ commit log reword -- Yuanhan Liu ]
Signed-off-by: Victor Kaplansky <victork at redhat.com>
Acked-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
---
v2: invoke vring_state_changed() callback per-vring as well
This fixes a fatal issue, without that MQ will not work properly.
Seems that Victor is busy at something else (or out of office so
far), hence I sent v2 on behalf of him.
---
lib/librte_vhost/vhost_user/virtio-net-user.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/lib/librte_vhost/vhost_user/virtio-net-user.c
b/lib/librte_vhost/vhost_user/virtio-net-user.c
index d07452a..b2ada9f 100644
--- a/lib/librte_vhost/vhost_user/virtio-net-user.c
+++ b/lib/librte_vhost/vhost_user/virtio-net-user.c
@@ -317,7 +317,6 @@ user_set_vring_enable(struct vhost_device_ctx ctx,
struct vhost_vring_state *state)
{
struct virtio_net *dev = get_device(ctx);
- uint16_t base_idx = state->index;
int enable = (int)state->num;
RTE_LOG(INFO, VHOST_CONFIG,
@@ -325,12 +324,10 @@ user_set_vring_enable(struct vhost_device_ctx ctx,
enable, state->index);
if (notify_ops->vring_state_changed) {
- notify_ops->vring_state_changed(dev, base_idx / VIRTIO_QNUM,
- enable);
+ notify_ops->vring_state_changed(dev, state->index, enable);
}
- dev->virtqueue[base_idx + VIRTIO_RXQ]->enabled = enable;
- dev->virtqueue[base_idx + VIRTIO_TXQ]->enabled = enable;
+ dev->virtqueue[state->index]->enabled = enable;
return 0;
}
--
1.9.3
