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path: root/drivers/net/mlx4/en_rx.c
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Diffstat (limited to 'drivers/net/mlx4/en_rx.c')
-rw-r--r--drivers/net/mlx4/en_rx.c96
1 files changed, 0 insertions, 96 deletions
diff --git a/drivers/net/mlx4/en_rx.c b/drivers/net/mlx4/en_rx.c
index 5a14899..91bdfdf 100644
--- a/drivers/net/mlx4/en_rx.c
+++ b/drivers/net/mlx4/en_rx.c
@@ -269,31 +269,6 @@ reduce_rings:
return 0;
}
-static int mlx4_en_fill_rx_buf(struct net_device *dev,
- struct mlx4_en_rx_ring *ring)
-{
- struct mlx4_en_priv *priv = netdev_priv(dev);
- int num = 0;
- int err;
-
- while ((u32) (ring->prod - ring->cons) < ring->actual_size) {
- err = mlx4_en_prepare_rx_desc(priv, ring, ring->prod &
- ring->size_mask);
- if (err) {
- if (netif_msg_rx_err(priv))
- en_warn(priv, "Failed preparing rx descriptor\n");
- priv->port_stats.rx_alloc_failed++;
- break;
- }
- ++num;
- ++ring->prod;
- }
- if ((u32) (ring->prod - ring->cons) == ring->actual_size)
- ring->full = 1;
-
- return num;
-}
-
static void mlx4_en_free_rx_buf(struct mlx4_en_priv *priv,
struct mlx4_en_rx_ring *ring)
{
@@ -312,42 +287,6 @@ static void mlx4_en_free_rx_buf(struct mlx4_en_priv *priv,
}
}
-
-void mlx4_en_rx_refill(struct work_struct *work)
-{
- struct delayed_work *delay = to_delayed_work(work);
- struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
- refill_task);
- struct mlx4_en_dev *mdev = priv->mdev;
- struct net_device *dev = priv->dev;
- struct mlx4_en_rx_ring *ring;
- int need_refill = 0;
- int i;
-
- mutex_lock(&mdev->state_lock);
- if (!mdev->device_up || !priv->port_up)
- goto out;
-
- /* We only get here if there are no receive buffers, so we can't race
- * with Rx interrupts while filling buffers */
- for (i = 0; i < priv->rx_ring_num; i++) {
- ring = &priv->rx_ring[i];
- if (ring->need_refill) {
- if (mlx4_en_fill_rx_buf(dev, ring)) {
- ring->need_refill = 0;
- mlx4_en_update_rx_prod_db(ring);
- } else
- need_refill = 1;
- }
- }
- if (need_refill)
- queue_delayed_work(mdev->workqueue, &priv->refill_task, HZ);
-
-out:
- mutex_unlock(&mdev->state_lock);
-}
-
-
int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
struct mlx4_en_rx_ring *ring, u32 size, u16 stride)
{
@@ -457,9 +396,6 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv)
ring_ind--;
goto err_allocator;
}
-
- /* Fill Rx buffers */
- ring->full = 0;
}
err = mlx4_en_fill_rx_buffers(priv);
if (err)
@@ -647,33 +583,6 @@ static struct sk_buff *mlx4_en_rx_skb(struct mlx4_en_priv *priv,
return skb;
}
-static void mlx4_en_copy_desc(struct mlx4_en_priv *priv,
- struct mlx4_en_rx_ring *ring,
- int from, int to, int num)
-{
- struct skb_frag_struct *skb_frags_from;
- struct skb_frag_struct *skb_frags_to;
- struct mlx4_en_rx_desc *rx_desc_from;
- struct mlx4_en_rx_desc *rx_desc_to;
- int from_index, to_index;
- int nr, i;
-
- for (i = 0; i < num; i++) {
- from_index = (from + i) & ring->size_mask;
- to_index = (to + i) & ring->size_mask;
- skb_frags_from = ring->rx_info + (from_index << priv->log_rx_info);
- skb_frags_to = ring->rx_info + (to_index << priv->log_rx_info);
- rx_desc_from = ring->buf + (from_index << ring->log_stride);
- rx_desc_to = ring->buf + (to_index << ring->log_stride);
-
- for (nr = 0; nr < priv->num_frags; nr++) {
- skb_frags_to[nr].page = skb_frags_from[nr].page;
- skb_frags_to[nr].page_offset = skb_frags_from[nr].page_offset;
- rx_desc_to->data[nr].addr = rx_desc_from->data[nr].addr;
- }
- }
-}
-
int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int budget)
{
@@ -821,11 +730,6 @@ out:
wmb(); /* ensure HW sees CQ consumer before we post new buffers */
ring->cons = cq->mcq.cons_index;
ring->prod += polled; /* Polled descriptors were realocated in place */
- if (unlikely(!ring->full)) {
- mlx4_en_copy_desc(priv, ring, ring->cons - polled,
- ring->prod - polled, polled);
- mlx4_en_fill_rx_buf(dev, ring);
- }
mlx4_en_update_rx_prod_db(ring);
return polled;
}