diff options
| author | Andy Fleming <afleming@freescale.com> | 2009-02-04 16:43:16 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-04 16:43:16 -0800 |
| commit | 0fd56bb5be6455d0d42241e65aed057244665e5e (patch) | |
| tree | 45c37c6aa44d8719797a9ad5a4f2d6018a4305da | |
| parent | 1577ecef766650a57fceb171acee2b13cbfaf1d3 (diff) | |
| download | linux-0fd56bb5be6455d0d42241e65aed057244665e5e.tar.gz | |
gianfar: Add support for skb recycling
Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/gianfar.c | 23 | ||||
| -rw-r--r-- | drivers/net/gianfar.h | 2 |
2 files changed, 21 insertions, 4 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index bd21b6d5f13c..33de25602b32 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -1181,6 +1181,8 @@ static int gfar_enet_open(struct net_device *dev) napi_enable(&priv->napi); + skb_queue_head_init(&priv->rx_recycle); + /* Initialize a bunch of registers */ init_registers(dev); @@ -1399,6 +1401,7 @@ static int gfar_close(struct net_device *dev) napi_disable(&priv->napi); + skb_queue_purge(&priv->rx_recycle); cancel_work_sync(&priv->reset_task); stop_gfar(dev); @@ -1595,7 +1598,17 @@ static int gfar_clean_tx_ring(struct net_device *dev) bdp = next_txbd(bdp, base, tx_ring_size); } - dev_kfree_skb_any(skb); + /* + * If there's room in the queue (limit it to rx_buffer_size) + * we add this skb back into the pool, if it's the right size + */ + if (skb_queue_len(&priv->rx_recycle) < priv->rx_ring_size && + skb_recycle_check(skb, priv->rx_buffer_size + + RXBUF_ALIGNMENT)) + __skb_queue_head(&priv->rx_recycle, skb); + else + dev_kfree_skb_any(skb); + priv->tx_skbuff[skb_dirtytx] = NULL; skb_dirtytx = (skb_dirtytx + 1) & @@ -1668,8 +1681,10 @@ struct sk_buff * gfar_new_skb(struct net_device *dev) struct gfar_private *priv = netdev_priv(dev); struct sk_buff *skb = NULL; - /* We have to allocate the skb, so keep trying till we succeed */ - skb = netdev_alloc_skb(dev, priv->rx_buffer_size + RXBUF_ALIGNMENT); + skb = __skb_dequeue(&priv->rx_recycle); + if (!skb) + skb = netdev_alloc_skb(dev, + priv->rx_buffer_size + RXBUF_ALIGNMENT); if (!skb) return NULL; @@ -1817,7 +1832,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit) if (unlikely(!newskb)) newskb = skb; else if (skb) - dev_kfree_skb_any(skb); + __skb_queue_head(&priv->rx_recycle, skb); } else { /* Increment the number of packets */ dev->stats.rx_packets++; diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h index 3cb901b2e240..811855bc4231 100644 --- a/drivers/net/gianfar.h +++ b/drivers/net/gianfar.h @@ -758,6 +758,8 @@ struct gfar_private { unsigned int rx_stash_size; unsigned int rx_stash_index; + struct sk_buff_head rx_recycle; + struct vlan_group *vlgrp; /* Unprotected fields */ |