Function nfp_mask_id_alloc

dpdk/drivers/net/nfp/nfp_flow.c:158–189

}

static int
nfp_mask_id_alloc(struct nfp_flow_priv *priv,
		uint8_t *mask_id)
{
	uint8_t temp_id;
	uint8_t freed_id;
	struct circ_buf *ring;

	/* Checking for unallocated entries first. */
	if (priv->mask_ids.init_unallocated > 0) {
		*mask_id = priv->mask_ids.init_unallocated;
		priv->mask_ids.init_unallocated--;
		return 0;
	}

	/* Checking if buffer is empty. */
	freed_id = NFP_FLOWER_MASK_ENTRY_RS - 1;
	ring = &priv->mask_ids.free_list;
	if (ring->head == ring->tail) {
		*mask_id = freed_id;
		return -ENOENT;
	}

	rte_memcpy(&temp_id, &ring->buf[ring->tail], NFP_FLOWER_MASK_ELEMENT_RS);
	*mask_id = temp_id;

	rte_memcpy(&ring->buf[ring->tail], &freed_id, NFP_FLOWER_MASK_ELEMENT_RS);
	ring->tail = (ring->tail + NFP_FLOWER_MASK_ELEMENT_RS) %
			(NFP_FLOWER_MASK_ENTRY_RS * NFP_FLOWER_MASK_ELEMENT_RS);

	return 0;
}

static int
nfp_mask_id_free(struct nfp_flow_priv *priv,