virtio_chain_alloc
rb->rb_chain = virtio_chain_alloc(state->vio_rq, KM_SLEEP);
if ((vnr->vnr_chain = virtio_chain_alloc(vin->vin_vq, kmflag)) ==
vbr->vbr_chain = virtio_chain_alloc(vib->vib_vq, KM_SLEEP);
if ((tb->tb_chain = virtio_chain_alloc(vif->vif_tx_vq,
if ((cb->cb_chain = virtio_chain_alloc(vif->vif_ctrl_vq,
if ((rb->rb_chain = virtio_chain_alloc(vif->vif_rx_vq,
ve->ve_vic = virtio_chain_alloc(sc->vs_evt_vq, KM_SLEEP);
req->vr_vic = virtio_chain_alloc(vq, sleep);
virtio_chain_t *virtio_chain_alloc(virtio_queue_t *, int);