[PATCH] vhost_net: fix missing descriptor recovery

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When get_tx_bufs get descriptor successful, but this descriptor have
some problem, we should inform the guest to recycle this descriptor,
instead of doing nothing.

Signed-off-by: huhai <huhai@xxxxxxxxxx>
---
 drivers/vhost/net.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 247e5585af5d..939a2ef9c223 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -620,6 +620,7 @@ static int get_tx_bufs(struct vhost_net *net,
 	if (*in) {
 		vq_err(vq, "Unexpected descriptor format for TX: out %d, int %d\n",
 			*out, *in);
+		vhost_add_used_and_signal(&net->dev, vq, ret, 0);
 		return -EFAULT;
 	}
 
@@ -628,6 +629,7 @@ static int get_tx_bufs(struct vhost_net *net,
 	if (*len == 0) {
 		vq_err(vq, "Unexpected header len for TX: %zd expected %zd\n",
 			*len, nvq->vhost_hlen);
+		vhost_add_used_and_signal(&net->dev, vq, ret, 0);
 		return -EFAULT;
 	}
 
-- 
2.20.1






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