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virtqueue_add_buffer must check that there is room for multiple buffers

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Ensure there is enough room for all the buffers being added to the vring.
Signed-off-by: Tammy Leino <tammy_leino@mentor.com>
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Tammy Leino
2022-04-12 08:12:37 -07:00
committed by Arnaud Pouliquen
parent 9b96accd88
commit 2dcdc61587
1 changed files with 1 additions and 1 deletions
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lib/virtio/virtqueue.c
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@@ -131,7 +131,7 @@ int virtqueue_add_buffer(struct virtqueue *vq, struct virtqueue_buf *buf_list,
VQ_PARAM_CHK(vq == NULL, status, ERROR_VQUEUE_INVLD_PARAM);
VQ_PARAM_CHK(needed < 1, status, ERROR_VQUEUE_INVLD_PARAM);
VQ_PARAM_CHK(vq->vq_free_cnt == 0, status, ERROR_VRING_FULL);
VQ_PARAM_CHK(vq->vq_free_cnt < needed, status, ERROR_VRING_FULL);
VQUEUE_BUSY(vq);