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authorEric Dumazet <edumazet@google.com>2017-03-08 08:17:10 -0800
committerDavid S. Miller <davem@davemloft.net>2017-03-09 09:54:46 -0800
commitacd7628de05c73118aab7ae4847a5b5b2c6999c9 (patch)
treecf5fdd8b5d863154c34126938872dab684c9aeda /drivers/net/ethernet/mellanox/mlx4/en_rx.c
parentd85f6c14e967b0bddfa9712daa17d79e297d18b8 (diff)
mlx4: reduce rx ring page_cache size
We only need to store the page and dma address. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/en_rx.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_rx.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index bb33032a280f..453313d404e3 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -250,7 +250,10 @@ static int mlx4_en_prepare_rx_desc(struct mlx4_en_priv *priv,
(index << priv->log_rx_info);
if (ring->page_cache.index > 0) {
- frags[0] = ring->page_cache.buf[--ring->page_cache.index];
+ ring->page_cache.index--;
+ frags[0].page = ring->page_cache.buf[ring->page_cache.index].page;
+ frags[0].dma = ring->page_cache.buf[ring->page_cache.index].dma;
+ frags[0].page_offset = XDP_PACKET_HEADROOM;
rx_desc->data[0].addr = cpu_to_be64(frags[0].dma +
frags[0].page_offset);
return 0;
@@ -537,7 +540,9 @@ bool mlx4_en_rx_recycle(struct mlx4_en_rx_ring *ring,
if (cache->index >= MLX4_EN_CACHE_SIZE)
return false;
- cache->buf[cache->index++] = *frame;
+ cache->buf[cache->index].page = frame->page;
+ cache->buf[cache->index].dma = frame->dma;
+ cache->index++;
return true;
}
@@ -567,11 +572,9 @@ void mlx4_en_deactivate_rx_ring(struct mlx4_en_priv *priv,
int i;
for (i = 0; i < ring->page_cache.index; i++) {
- struct mlx4_en_rx_alloc *frame = &ring->page_cache.buf[i];
-
- dma_unmap_page(priv->ddev, frame->dma, frame->page_size,
- priv->dma_dir);
- put_page(frame->page);
+ dma_unmap_page(priv->ddev, ring->page_cache.buf[i].dma,
+ PAGE_SIZE, priv->dma_dir);
+ put_page(ring->page_cache.buf[i].page);
}
ring->page_cache.index = 0;
mlx4_en_free_rx_buf(priv, ring);