netdev - [PATCH 5/8] net/ucc_geth: use generic recycling infrastructure

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Message-Id: <1278098421-21296-6-git-send-email-sebastian@breakpoint.cc>
Date:	Fri,  2 Jul 2010 21:20:18 +0200
From:	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>
To:	netdev@...r.kernel.org
Cc:	tglx@...utronix.de,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH 5/8] net/ucc_geth: use generic recycling infrastructure

From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 drivers/net/ucc_geth.c |   30 ++++++++----------------------
 drivers/net/ucc_geth.h |    2 --
 2 files changed, 8 insertions(+), 24 deletions(-)

diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
index dc32a62..9d6097b 100644
--- a/drivers/net/ucc_geth.c
+++ b/drivers/net/ucc_geth.c
@@ -210,10 +210,7 @@ static struct sk_buff *get_new_skb(struct ucc_geth_private *ugeth,
 {
 	struct sk_buff *skb = NULL;
 
-	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);
+	skb = net_recycle_get(ugeth->ndev);
 	if (skb == NULL)
 		return NULL;
 
@@ -1992,8 +1989,6 @@ 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)
@@ -2069,6 +2064,7 @@ static void ucc_geth_stop(struct ucc_geth_private *ugeth)
 	ugeth->phydev = NULL;
 
 	ucc_geth_memclean(ugeth);
+	net_recycle_cleanup(ugeth->ndev);
 }
 
 static int ucc_struct_init(struct ucc_geth_private *ugeth)
@@ -2205,9 +2201,6 @@ static int ucc_struct_init(struct ucc_geth_private *ugeth)
 			ugeth_err("%s: Failed to ioremap regs.", __func__);
 		return -ENOMEM;
 	}
-
-	skb_queue_head_init(&ugeth->rx_recycle);
-
 	return 0;
 }
 
@@ -3213,12 +3206,8 @@ 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) {
-				skb->data = skb->head + NET_SKB_PAD;
-				skb->len = 0;
-				skb_reset_tail_pointer(skb);
-				__skb_queue_head(&ugeth->rx_recycle, skb);
-			}
+			if (skb)
+				net_recycle_add(dev, skb);
 
 			ugeth->rx_skbuff[rxQ][ugeth->skb_currx[rxQ]] = NULL;
 			dev->stats.rx_dropped++;
@@ -3288,13 +3277,7 @@ static int ucc_geth_tx(struct net_device *dev, u8 txQ)
 
 		dev->stats.tx_packets++;
 
-		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);
+		net_recycle_add(dev, skb);
 
 		ugeth->tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]] = NULL;
 		ugeth->skb_dirtytx[txQ] =
@@ -3929,6 +3912,9 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma
 	netif_napi_add(dev, &ugeth->napi, ucc_geth_poll, 64);
 	dev->mtu = 1500;
 
+	net_recycle_init(dev, RX_BD_RING_LEN, ug_info->uf_info.max_rx_buf_length
+			+ UCC_GETH_RX_DATA_BUF_ALIGNMENT);
+
 	ugeth->msg_enable = netif_msg_init(debug.msg_enable, UGETH_MSG_DEFAULT);
 	ugeth->phy_interface = phy_interface;
 	ugeth->max_speed = max_speed;
diff --git a/drivers/net/ucc_geth.h b/drivers/net/ucc_geth.h
index 05a9558..07c0816 100644
--- a/drivers/net/ucc_geth.h
+++ b/drivers/net/ucc_geth.h
@@ -1213,8 +1213,6 @@ 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;
-- 
1.6.6.1

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