[PATCH 2/4] virtio_net: pass well-formed sg to virtqueue_add_inbuf()

[Rusty Russell]

This is the only place which doesn't hand virtqueue_add_inbuf or
virtqueue_add_outbuf a well-formed, well-terminated sg.  Fix it,
so we can make virtio_add_* simpler.

Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
---
 drivers/net/virtio_net.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 8a852b5f215f..63299b04cdf2 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -590,6 +590,8 @@ static int add_recvbuf_big(struct receive_queue *rq, gfp_t gfp)
 	offset = sizeof(struct padded_vnet_hdr);
 	sg_set_buf(&rq->sg[1], p + offset, PAGE_SIZE - offset);
 
+	sg_mark_end(&rq->sg[MAX_SKB_FRAGS + 2 - 1]);
+
 	/* chain first in list head */
 	first->private = (unsigned long)list;
 	err = virtqueue_add_inbuf(rq->vq, rq->sg, MAX_SKB_FRAGS + 2,
-- 
1.9.1

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