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-rw-r--r--drivers/net/ucc_geth.c40
-rw-r--r--drivers/net/ucc_geth.h2
2 files changed, 30 insertions, 12 deletions
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
index 5ba9586..ca476a5 100644
--- a/drivers/net/ucc_geth.c
+++ b/drivers/net/ucc_geth.c
@@ -209,9 +209,10 @@ static struct sk_buff *get_new_skb(struct ucc_geth_private *ugeth,
{
struct sk_buff *skb = NULL;
- skb = dev_alloc_skb(ugeth->ug_info->uf_info.max_rx_buf_length +
- UCC_GETH_RX_DATA_BUF_ALIGNMENT);
-
+ skb = __skb_dequeue(&ugeth->rx_recycle);
+ if (!skb)
+ skb = dev_alloc_skb(ugeth->ug_info->uf_info.max_rx_buf_length +
+ UCC_GETH_RX_DATA_BUF_ALIGNMENT);
if (skb == NULL)
return NULL;
@@ -1986,6 +1987,8 @@ static void ucc_geth_memclean(struct ucc_geth_private *ugeth)
iounmap(ugeth->ug_regs);
ugeth->ug_regs = NULL;
}
+
+ skb_queue_purge(&ugeth->rx_recycle);
}
static void ucc_geth_set_multi(struct net_device *dev)
@@ -2202,6 +2205,8 @@ static int ucc_struct_init(struct ucc_geth_private *ugeth)
return -ENOMEM;
}
+ skb_queue_head_init(&ugeth->rx_recycle);
+
return 0;
}
@@ -3208,8 +3213,10 @@ static int ucc_geth_rx(struct ucc_geth_private *ugeth, u8 rxQ, int rx_work_limit
if (netif_msg_rx_err(ugeth))
ugeth_err("%s, %d: ERROR!!! skb - 0x%08x",
__func__, __LINE__, (u32) skb);
- if (skb)
- dev_kfree_skb_any(skb);
+ if (skb) {
+ skb->data = skb->head + NET_SKB_PAD;
+ __skb_queue_head(&ugeth->rx_recycle, skb);
+ }
ugeth->rx_skbuff[rxQ][ugeth->skb_currx[rxQ]] = NULL;
dev->stats.rx_dropped++;
@@ -3267,6 +3274,8 @@ static int ucc_geth_tx(struct net_device *dev, u8 txQ)
/* Normal processing. */
while ((bd_status & T_R) == 0) {
+ struct sk_buff *skb;
+
/* BD contains already transmitted buffer. */
/* Handle the transmitted buffer and release */
/* the BD to be used with the current frame */
@@ -3276,9 +3285,16 @@ static int ucc_geth_tx(struct net_device *dev, u8 txQ)
dev->stats.tx_packets++;
- /* Free the sk buffer associated with this TxBD */
- dev_kfree_skb(ugeth->
- tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]]);
+ skb = ugeth->tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]];
+
+ if (skb_queue_len(&ugeth->rx_recycle) < RX_BD_RING_LEN &&
+ skb_recycle_check(skb,
+ ugeth->ug_info->uf_info.max_rx_buf_length +
+ UCC_GETH_RX_DATA_BUF_ALIGNMENT))
+ __skb_queue_head(&ugeth->rx_recycle, skb);
+ else
+ dev_kfree_skb(skb);
+
ugeth->tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]] = NULL;
ugeth->skb_dirtytx[txQ] =
(ugeth->skb_dirtytx[txQ] +
@@ -3307,16 +3323,16 @@ static int ucc_geth_poll(struct napi_struct *napi, int budget)
ug_info = ugeth->ug_info;
- howmany = 0;
- for (i = 0; i < ug_info->numQueuesRx; i++)
- howmany += ucc_geth_rx(ugeth, i, budget - howmany);
-
/* Tx event processing */
spin_lock(&ugeth->lock);
for (i = 0; i < ug_info->numQueuesTx; i++)
ucc_geth_tx(ugeth->ndev, i);
spin_unlock(&ugeth->lock);
+ howmany = 0;
+ for (i = 0; i < ug_info->numQueuesRx; i++)
+ howmany += ucc_geth_rx(ugeth, i, budget - howmany);
+
if (howmany < budget) {
napi_complete(napi);
setbits32(ugeth->uccf->p_uccm, UCCE_RX_EVENTS | UCCE_TX_EVENTS);
diff --git a/drivers/net/ucc_geth.h b/drivers/net/ucc_geth.h
index 195ab26..cfb31af 100644
--- a/drivers/net/ucc_geth.h
+++ b/drivers/net/ucc_geth.h
@@ -1212,6 +1212,8 @@ struct ucc_geth_private {
/* index of the first skb which hasn't been transmitted yet. */
u16 skb_dirtytx[NUM_TX_QUEUES];
+ struct sk_buff_head rx_recycle;
+
struct ugeth_mii_info *mii_info;
struct phy_device *phydev;
phy_interface_t phy_interface;