[PATCH] vhost: fix missing copy length in batched copies

[Xia, Chenbo]

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin at redhat.com>
> Sent: Tuesday, July 12, 2022 6:10 PM
> To: dev at dpdk.org; Xia, Chenbo <chenbo.xia at intel.com>; Jiang, YuX
> <yux.jiang at intel.com>; thomas at monjalon.net; david.marchand at redhat.com
> Subject: Re: [PATCH] vhost: fix missing copy length in batched copies
> 
> 
> 
> On 7/12/22 12:04, Maxime Coquelin wrote:
> > This patch fixes missing the assignement of the copy length
> s/assignement/assignment/
> 
> If this is the only change requested, could it be fixed while applying,
> or should I send a v2?
> 
> Thanks,
> Maxime
> 
> > when doing batched copies in the sync dequeue path.
> >
> > Fixes: cd79d1b030bd ("vhost: fix unnecessary dirty page logging")
> >
> > Suggested-by: Chenbo Xia <chenbo.xia at intel.com>
> > Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> > ---
> >   lib/vhost/virtio_net.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)

With the typo fixed:

Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>

> >
> > diff --git a/lib/vhost/virtio_net.c b/lib/vhost/virtio_net.c
> > index 12b7fbe7f9..35fa4670fd 100644
> > --- a/lib/vhost/virtio_net.c
> > +++ b/lib/vhost/virtio_net.c
> > @@ -1127,13 +1127,13 @@ sync_fill_seg(struct virtio_net *dev, struct
> vhost_virtqueue *vq,
> >   			batch_copy[vq->batch_copy_nb_elems].src =
> >   				rte_pktmbuf_mtod_offset(m, void *, mbuf_offset);
> >   			batch_copy[vq->batch_copy_nb_elems].log_addr = buf_iova;
> > -			batch_copy[vq->batch_copy_nb_elems].len = cpy_len;
> >   		} else {
> >   			batch_copy[vq->batch_copy_nb_elems].dst =
> >   				rte_pktmbuf_mtod_offset(m, void *, mbuf_offset);
> >   			batch_copy[vq->batch_copy_nb_elems].src =
> >   				(void *)((uintptr_t)(buf_addr));
> >   		}
> > +		batch_copy[vq->batch_copy_nb_elems].len = cpy_len;
> >   		vq->batch_copy_nb_elems++;
> >   	}
> >   }