dev/virtio/virtqueue.c

226 	struct vq_desc_extra *dxp;
250 		dxp = &vq->vq_descx[i];
252 		dxp->indirect = malloc(size, M_DEVBUF, M_NOWAIT);
253 		if (dxp->indirect == NULL) {
258 		dxp->indirect_paddr = vtophys(dxp->indirect);
259 		virtqueue_init_indirect_list(vq, dxp->indirect);
268 	struct vq_desc_extra *dxp;
272 		dxp = &vq->vq_descx[i];
274 		if (dxp->indirect == NULL)
277 		free(dxp->indirect, M_DEVBUF);
278 		dxp->indirect = NULL;
279 		dxp->indirect_paddr = 0;
302 	struct vq_desc_extra *dxp;
328 		dxp = &vq->vq_descx[i];
329 		dxp->cookie = NULL;
330 		dxp->ndescs = 0;
332 			virtqueue_init_indirect_list(vq, dxp->indirect);
482 	struct vq_desc_extra *dxp;
509 	dxp = &vq->vq_descx[head_idx];
511 	VQASSERT(vq, dxp->cookie == NULL,
513 	dxp->cookie = cookie;
514 	dxp->ndescs = needed;
701 	struct vq_desc_extra *dxp;
712 	dxp = &vq->vq_descx[head_idx];
714 	VQASSERT(vq, dxp->cookie == NULL,
716 	dxp->cookie = cookie;
717 	dxp->ndescs = 1;
719 	dp->addr = dxp->indirect_paddr;
723 	vq_ring_enqueue_segments(vq, dxp->indirect, 0,
789 	struct vq_desc_extra *dxp;
793 	dxp = &vq->vq_descx[desc_idx];
798 	vq->vq_free_cnt += dxp->ndescs;
799 	dxp->ndescs--;
805 			dxp->ndescs--;
809 	VQASSERT(vq, dxp->ndescs == 0,
810 	    "failed to free entire desc chain, remaining: %d", dxp->ndescs);