static int mlx4_en_prepare_rx_desc(struct mlx4_en_priv *priv,
struct mlx4_en_rx_ring *ring,
int index, gfp_t gfp)
{
struct mlx4_en_rx_desc *rx_desc = ring->buf + ring->stride * index;
struct mlx4_en_rx_alloc *frags = ring->rx_info +
(index << priv->log_rx_info);
return mlx4_en_alloc_frags(priv, rx_desc, frags, ring->page_alloc, gfp);
}
static int mlx4_en_prepare_rx_desc(struct mlx4_en_priv *priv,
struct mlx4_en_rx_ring *ring, int index,
gfp_t gfp)
{
struct mlx4_en_rx_desc *rx_desc = ring->buf + (index * ring->stride);
struct mlx4_en_rx_alloc *frags = ring->rx_info +
(index << priv->log_rx_info);
if (ring->page_cache.index > 0) {
frags[0] = ring->page_cache.buf[--ring->page_cache.index];
rx_desc->data[0].addr = cpu_to_be64(frags[0].dma);
return 0;
}
return mlx4_en_alloc_frags(priv, rx_desc, frags, ring->page_alloc, gfp);
}
static int mlx4_en_prepare_rx_desc(struct mlx4_en_priv *priv,
struct mlx4_en_rx_ring *ring, int index,
gfp_t gfp)
{
struct mlx4_en_rx_desc *rx_desc = ring->buf +
(index << ring->log_stride);
struct mlx4_en_rx_alloc *frags = ring->rx_info +
(index << priv->log_rx_info);
if (likely(ring->page_cache.index > 0)) {
/* XDP uses a single page per frame */
if (!frags->page) {
ring->page_cache.index--;
frags->page = ring->page_cache.buf[ring->page_cache.index].page;
frags->dma = ring->page_cache.buf[ring->page_cache.index].dma;
}
frags->page_offset = XDP_PACKET_HEADROOM;
rx_desc->data[0].addr = cpu_to_be64(frags->dma +
XDP_PACKET_HEADROOM);
return 0;
}
return mlx4_en_alloc_frags(priv, ring, rx_desc, frags, gfp);
}
