35 void vring_detach(struct vring_virtqueue *vq, unsigned int head)  in vring_detach()  argument
37    struct vring *vr = &vq->vring;  in vring_detach()
48    vr->desc[i].next = vq->free_head;  in vring_detach()
50    vq->free_head = head;  in vring_detach()
60 int vring_get_buf(struct vring_virtqueue *vq, unsigned int *len)  in vring_get_buf()  argument
62    struct vring *vr = &vq->vring;  in vring_get_buf()
67    BUG_ON(!vring_more_used(vq));  in vring_get_buf()
69    elem = &vr->used->ring[vq->last_used_idx % vr->num];  in vring_get_buf()
75    ret = vq->vdata[id];  in vring_get_buf()
77    vring_detach(vq, id);  in vring_get_buf()
79    vq->last_used_idx++;  in vring_get_buf()
84 void vring_add_buf(struct vring_virtqueue *vq,  in vring_add_buf()  argument
89    struct vring *vr = &vq->vring;  in vring_add_buf()
95    head = vq->free_head;  in vring_add_buf()
114    vq->free_head = i;  in vring_add_buf()
116    vq->vdata[head] = index;  in vring_add_buf()
123 void vring_kick(unsigned int ioaddr, struct vring_virtqueue *vq, int num_added)  in vring_kick()  argument
125    struct vring *vr = &vq->vring;  in vring_kick()
132            vp_notify(ioaddr, vq->queue_index);  in vring_kick()