176 	struct netmap_ring *ring;  in netmap_send()  local
184 	ring = priv->tx;  in netmap_send()
185 	head = ring->head;  in netmap_send()
186 	if (head == ring->tail) {  in netmap_send()
190 	nm_buf = NETMAP_BUF(ring, ring->slot[head].buf_idx);  in netmap_send()
191 	nm_buf_size = ring->nr_buf_size;  in netmap_send()
220 			ring->slot[head].len = nm_buf_len;  in netmap_send()
221 			ring->slot[head].flags = NS_MOREFRAG;  in netmap_send()
222 			head = nm_ring_next(ring, head);  in netmap_send()
223 			if (head == ring->tail) {  in netmap_send()
232 			nm_buf = NETMAP_BUF(ring, ring->slot[head].buf_idx);  in netmap_send()
233 			nm_buf_size = ring->nr_buf_size;  in netmap_send()
239 	ring->slot[head].len = nm_buf_len;  in netmap_send()
240 	ring->slot[head].flags = 0;  in netmap_send()
241 	head = nm_ring_next(ring, head);  in netmap_send()
243 	/* Now update ring->head and ring->cur. */  in netmap_send()
244 	ring->head = ring->cur = head;  in netmap_send()
255 	struct netmap_ring *ring = priv->rx;  in netmap_peek_recvlen()  local
256 	uint32_t head = ring->head;  in netmap_peek_recvlen()
259 	while (head != ring->tail) {  in netmap_peek_recvlen()
260 		struct netmap_slot *slot = ring->slot + head;  in netmap_peek_recvlen()
265 		head = nm_ring_next(ring, head);  in netmap_peek_recvlen()
276 	struct netmap_ring *ring;  in netmap_recv()  local
284 	ring = priv->rx;  in netmap_recv()
285 	head = ring->head;  in netmap_recv()
293 		if (head == ring->tail) {  in netmap_recv()
297 		slot = ring->slot + head;  in netmap_recv()
298 		nm_buf = NETMAP_BUF(ring, slot->buf_idx);  in netmap_recv()
328 		head = nm_ring_next(ring, head);  in netmap_recv()
333 	ring->head = ring->cur = head;  in netmap_recv()