1 files changed, 65 insertions, 40 deletions

diff --git a/drivers/net/ipg.c b/drivers/net/ipg.c
index 2c03f4e2ccc..7373dafbb3f 100644
--- a/drivers/net/ipg.c
+++ b/drivers/net/ipg.c
@@ -42,7 +42,6 @@
 #define ipg_r16(reg)		ioread16(ioaddr + (reg))
 #define ipg_r8(reg)		ioread8(ioaddr + (reg))
 
-#define JUMBO_FRAME_4k_ONLY
 enum {
 	netdev_io_size = 128
 };
@@ -55,6 +54,14 @@ MODULE_DESCRIPTION("IC Plus IP1000 Gigabit Ethernet Adapter Linux Driver");
 MODULE_LICENSE("GPL");
 
 /*
+ * Defaults
+ */
+#define IPG_MAX_RXFRAME_SIZE	0x0600
+#define IPG_RXFRAG_SIZE		0x0600
+#define IPG_RXSUPPORT_SIZE	0x0600
+#define IPG_IS_JUMBO		false
+
+/*
  * Variable record -- index by leading revision/length
  * Revision/Length(=N*4), Address1, Data1, Address2, Data2,...,AddressN,DataN
  */
@@ -631,6 +638,7 @@ static void ipg_nic_set_multicast_list(struct net_device *dev)
 
 static int ipg_io_config(struct net_device *dev)
 {
+	struct ipg_nic_private *sp = netdev_priv(dev);
 	void __iomem *ioaddr = ipg_ioaddr(dev);
 	u32 origmacctrl;
 	u32 restoremacctrl;
@@ -670,7 +678,7 @@ static int ipg_io_config(struct net_device *dev)
 	/* Set RECEIVEMODE register. */
 	ipg_nic_set_multicast_list(dev);
 
-	ipg_w16(IPG_MAX_RXFRAME_SIZE, MAX_FRAME_SIZE);
+	ipg_w16(sp->max_rxframe_size, MAX_FRAME_SIZE);
 
 	ipg_w8(IPG_RXDMAPOLLPERIOD_VALUE,   RX_DMA_POLL_PERIOD);
 	ipg_w8(IPG_RXDMAURGENTTHRESH_VALUE, RX_DMA_URGENT_THRESH);
@@ -730,7 +738,7 @@ static int ipg_get_rxbuff(struct net_device *dev, int entry)
 
 	IPG_DEBUG_MSG("_get_rxbuff\n");
 
-	skb = netdev_alloc_skb(dev, IPG_RXSUPPORT_SIZE + NET_IP_ALIGN);
+	skb = netdev_alloc_skb(dev, sp->rxsupport_size + NET_IP_ALIGN);
 	if (!skb) {
 		sp->rx_buff[entry] = NULL;
 		return -ENOMEM;
@@ -751,7 +759,7 @@ static int ipg_get_rxbuff(struct net_device *dev, int entry)
 		sp->rx_buf_sz, PCI_DMA_FROMDEVICE));
 
 	/* Set the RFD fragment length. */
-	rxfragsize = IPG_RXFRAG_SIZE;
+	rxfragsize = sp->rxfrag_size;
 	rxfd->frag_info |= cpu_to_le64((rxfragsize << 48) & IPG_RFI_FRAGLEN);
 
 	return 0;
@@ -1076,8 +1084,6 @@ static int ipg_nic_rxrestore(struct net_device *dev)
 	return 0;
 }
 
-#ifdef JUMBO_FRAME
-
 /* use jumboindex and jumbosize to control jumbo frame status
  * initial status is jumboindex=-1 and jumbosize=0
  * 1. jumboindex = -1 and jumbosize=0 : previous jumbo frame has been done.
@@ -1097,7 +1103,7 @@ enum {
 	FRAME_WITH_START_WITH_END = 11
 };
 
-inline void ipg_nic_rx_free_skb(struct net_device *dev)
+static void ipg_nic_rx_free_skb(struct net_device *dev)
 {
 	struct ipg_nic_private *sp = netdev_priv(dev);
 	unsigned int entry = sp->rx_current % IPG_RFDLIST_LENGTH;
@@ -1113,7 +1119,7 @@ inline void ipg_nic_rx_free_skb(struct net_device *dev)
 	}
 }
 
-inline int ipg_nic_rx_check_frame_type(struct net_device *dev)
+static int ipg_nic_rx_check_frame_type(struct net_device *dev)
 {
 	struct ipg_nic_private *sp = netdev_priv(dev);
 	struct ipg_rx *rxfd = sp->rxd + (sp->rx_current % IPG_RFDLIST_LENGTH);
@@ -1126,7 +1132,7 @@ inline int ipg_nic_rx_check_frame_type(struct net_device *dev)
 	return type;
 }
 
-inline int ipg_nic_rx_check_error(struct net_device *dev)
+static int ipg_nic_rx_check_error(struct net_device *dev)
 {
 	struct ipg_nic_private *sp = netdev_priv(dev);
 	unsigned int entry = sp->rx_current % IPG_RFDLIST_LENGTH;
@@ -1209,8 +1215,8 @@ static void ipg_nic_rx_with_start_and_end(struct net_device *dev,
 
 	/* accept this frame and send to upper layer */
 	framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN;
-	if (framelen > IPG_RXFRAG_SIZE)
-		framelen = IPG_RXFRAG_SIZE;
+	if (framelen > sp->rxfrag_size)
+		framelen = sp->rxfrag_size;
 
 	skb_put(skb, framelen);
 	skb->protocol = eth_type_trans(skb, dev);
@@ -1243,10 +1249,10 @@ static void ipg_nic_rx_with_start(struct net_device *dev,
 	pci_unmap_single(pdev, le64_to_cpu(rxfd->frag_info & ~IPG_RFI_FRAGLEN),
 			 sp->rx_buf_sz, PCI_DMA_FROMDEVICE);
 
-	skb_put(skb, IPG_RXFRAG_SIZE);
+	skb_put(skb, sp->rxfrag_size);
 
 	jumbo->found_start = 1;
-	jumbo->current_size = IPG_RXFRAG_SIZE;
+	jumbo->current_size = sp->rxfrag_size;
 	jumbo->skb = skb;
 
 	sp->rx_buff[entry] = NULL;
@@ -1272,11 +1278,7 @@ static void ipg_nic_rx_with_end(struct net_device *dev,
 			framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN;
 
 			endframelen = framelen - jumbo->current_size;
-			/*
-			if (framelen > IPG_RXFRAG_SIZE)
-				framelen=IPG_RXFRAG_SIZE;
-			 */
-			if (framelen > IPG_RXSUPPORT_SIZE)
+			if (framelen > sp->rxsupport_size)
 				dev_kfree_skb_irq(jumbo->skb);
 			else {
 				memcpy(skb_put(jumbo->skb, endframelen),
@@ -1316,11 +1318,11 @@ static void ipg_nic_rx_no_start_no_end(struct net_device *dev,
 
 		if (skb) {
 			if (jumbo->found_start) {
-				jumbo->current_size += IPG_RXFRAG_SIZE;
-				if (jumbo->current_size <= IPG_RXSUPPORT_SIZE) {
+				jumbo->current_size += sp->rxfrag_size;
+				if (jumbo->current_size <= sp->rxsupport_size) {
 					memcpy(skb_put(jumbo->skb,
-						       IPG_RXFRAG_SIZE),
-					       skb->data, IPG_RXFRAG_SIZE);
+						       sp->rxfrag_size),
+					       skb->data, sp->rxfrag_size);
 				}
 			}
 			dev->last_rx = jiffies;
@@ -1334,7 +1336,7 @@ static void ipg_nic_rx_no_start_no_end(struct net_device *dev,
 	}
 }
 
-static int ipg_nic_rx(struct net_device *dev)
+static int ipg_nic_rx_jumbo(struct net_device *dev)
 {
 	struct ipg_nic_private *sp = netdev_priv(dev);
 	unsigned int curr = sp->rx_current;
@@ -1382,7 +1384,6 @@ static int ipg_nic_rx(struct net_device *dev)
 	return 0;
 }
 
-#else
 static int ipg_nic_rx(struct net_device *dev)
 {
 	/* Transfer received Ethernet frames to higher network layers. */
@@ -1413,11 +1414,11 @@ static int ipg_nic_rx(struct net_device *dev)
 		/* Check for jumbo frame arrival with too small
 		 * RXFRAG_SIZE.
 		 */
-		if (framelen > IPG_RXFRAG_SIZE) {
+		if (framelen > sp->rxfrag_size) {
 			IPG_DEBUG_MSG
 			    ("RFS FrameLen > allocated fragment size.\n");
 
-			framelen = IPG_RXFRAG_SIZE;
+			framelen = sp->rxfrag_size;
 		}
 
 		if ((IPG_DROP_ON_RX_ETH_ERRORS && (le64_to_cpu(rxfd->rfs) &
@@ -1556,7 +1557,6 @@ static int ipg_nic_rx(struct net_device *dev)
 
 	return 0;
 }
-#endif
 
 static void ipg_reset_after_host_error(struct work_struct *work)
 {
@@ -1592,9 +1592,9 @@ static irqreturn_t ipg_interrupt_handler(int irq, void *dev_inst)
 
 	IPG_DEBUG_MSG("_interrupt_handler\n");
 
-#ifdef JUMBO_FRAME
-	ipg_nic_rxrestore(dev);
-#endif
+	if (sp->is_jumbo)
+		ipg_nic_rxrestore(dev);
+
 	spin_lock(&sp->lock);
 
 	/* Get interrupt source information, and acknowledge
@@ -1650,7 +1650,10 @@ static irqreturn_t ipg_interrupt_handler(int irq, void *dev_inst)
 			sp->RFDListCheckedCount++;
 #endif
 
-		ipg_nic_rx(dev);
+		if (sp->is_jumbo)
+			ipg_nic_rx_jumbo(dev);
+		else
+			ipg_nic_rx(dev);
 	}
 
 	/* If TxDMAComplete interrupt, free used TFDs. */
@@ -1749,7 +1752,7 @@ static int ipg_nic_open(struct net_device *dev)
 
 	IPG_DEBUG_MSG("_nic_open\n");
 
-	sp->rx_buf_sz = IPG_RXSUPPORT_SIZE;
+	sp->rx_buf_sz = sp->rxsupport_size;
 
 	/* Check for interrupt line conflicts, and request interrupt
 	 * line for IPG.
@@ -1804,13 +1807,10 @@ static int ipg_nic_open(struct net_device *dev)
 	if (ipg_config_autoneg(dev) < 0)
 		printk(KERN_INFO "%s: Auto-negotiation error.\n", dev->name);
 
-#ifdef JUMBO_FRAME
 	/* initialize JUMBO Frame control variable */
 	sp->jumbo.found_start = 0;
 	sp->jumbo.current_size = 0;
 	sp->jumbo.skb = NULL;
-	dev->mtu = IPG_TXFRAG_SIZE;
-#endif
 
 	/* Enable transmit and receive operation of the IPG. */
 	ipg_w32((ipg_r32(MAC_CTRL) | IPG_MC_RX_ENABLE | IPG_MC_TX_ENABLE) &
@@ -2119,6 +2119,9 @@ static int ipg_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 
 static int ipg_nic_change_mtu(struct net_device *dev, int new_mtu)
 {
+	struct ipg_nic_private *sp = netdev_priv(dev);
+	int err;
+
 	/* Function to accomodate changes to Maximum Transfer Unit
 	 * (or MTU) of IPG NIC. Cannot use default function since
 	 * the default will not allow for MTU > 1500 bytes.
@@ -2126,16 +2129,33 @@ static int ipg_nic_change_mtu(struct net_device *dev, int new_mtu)
 
 	IPG_DEBUG_MSG("_nic_change_mtu\n");
 
-	/* Check that the new MTU value is between 68 (14 byte header, 46
-	 * byte payload, 4 byte FCS) and IPG_MAX_RXFRAME_SIZE, which
-	 * corresponds to the MAXFRAMESIZE register in the IPG.
+	/*
+	 * Check that the new MTU value is between 68 (14 byte header, 46 byte
+	 * payload, 4 byte FCS) and 10 KB, which is the largest supported MTU.
 	 */
-	if ((new_mtu < 68) || (new_mtu > IPG_MAX_RXFRAME_SIZE))
+	if (new_mtu < 68 || new_mtu > 10240)
 		return -EINVAL;
 
+	err = ipg_nic_stop(dev);
+	if (err)
+		return err;
+
 	dev->mtu = new_mtu;
 
-	return 0;
+	sp->max_rxframe_size = new_mtu;
+
+	sp->rxfrag_size = new_mtu;
+	if (sp->rxfrag_size > 4088)
+		sp->rxfrag_size = 4088;
+
+	sp->rxsupport_size = sp->max_rxframe_size;
+
+	if (new_mtu > 0x0600)
+		sp->is_jumbo = true;
+	else
+		sp->is_jumbo = false;
+
+	return ipg_nic_open(dev);
 }
 
 static int ipg_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
@@ -2240,6 +2260,11 @@ static int __devinit ipg_probe(struct pci_dev *pdev,
 	spin_lock_init(&sp->lock);
 	mutex_init(&sp->mii_mutex);
 
+	sp->is_jumbo = IPG_IS_JUMBO;
+	sp->rxfrag_size = IPG_RXFRAG_SIZE;
+	sp->rxsupport_size = IPG_RXSUPPORT_SIZE;
+	sp->max_rxframe_size = IPG_MAX_RXFRAME_SIZE;
+
 	/* Declare IPG NIC functions for Ethernet device methods.
 	 */
 	dev->open = &ipg_nic_open;