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Commit 09f5a214 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by Jeff Garzik
Browse files

[PATCH] sk98lin: allow ethtool checksum on/off per port 



Allow control of checksumming parameters via ethtool.

Signed-off-by: default avatarStephen Hemminger <shemminger@osdl.org>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent e9022ee6

drivers/net/sk98lin/h/skdrv2nd.h

+1 −0
Original line number Diff line number Diff line
@@ -297,6 +297,7 @@ struct s_RxPort { 
	RXD		*pRxdRingTail;	/* Tail of Rx rings */

	RXD		*pRxdRingPrev;	/* descriptor given to BMU previously */

	int		RxdRingFree;	/* # of free entrys */

	int		RxCsum;		/* use receive checksum hardware */

	spinlock_t	RxDesRingLock;	/* serialize descriptor accesses */

	int		RxFillLimit;	/* limit for buffers in ring */

	SK_IOC		HwAddr;		/* bmu registers address */

drivers/net/sk98lin/skethtool.c

+48 −0
Original line number Diff line number Diff line
@@ -539,6 +539,48 @@ static int setPauseParams(struct net_device *dev , struct ethtool_pauseparam *ep 
        return ret ? -EIO : 0;

}



/* Only Yukon supports checksum offload. */

static int setScatterGather(struct net_device *dev, u32 data)

{

	DEV_NET *pNet = netdev_priv(dev);

	SK_AC *pAC = pNet->pAC;



	if (pAC->GIni.GIChipId == CHIP_ID_GENESIS)

		return -EOPNOTSUPP;

	return ethtool_op_set_sg(dev, data);

}



static int setTxCsum(struct net_device *dev, u32 data)

{

	DEV_NET *pNet = netdev_priv(dev);

	SK_AC *pAC = pNet->pAC;



	if (pAC->GIni.GIChipId == CHIP_ID_GENESIS)

		return -EOPNOTSUPP;



	return ethtool_op_set_tx_csum(dev, data);

}



static u32 getRxCsum(struct net_device *dev)

{

	DEV_NET *pNet = netdev_priv(dev);

	SK_AC *pAC = pNet->pAC;



	return pAC->RxPort[pNet->PortNr].RxCsum;

}



static int setRxCsum(struct net_device *dev, u32 data)

{

	DEV_NET *pNet = netdev_priv(dev);

	SK_AC *pAC = pNet->pAC;



	if (pAC->GIni.GIChipId == CHIP_ID_GENESIS)

		return -EOPNOTSUPP;



	pAC->RxPort[pNet->PortNr].RxCsum = data != 0;

	return 0;

}



struct ethtool_ops SkGeEthtoolOps = {

	.get_settings		= getSettings,

	.set_settings		= setSettings,
@@ -551,4 +593,10 @@ struct ethtool_ops SkGeEthtoolOps = { 
	.set_pauseparam		= setPauseParams,

	.get_link		= ethtool_op_get_link,

	.get_perm_addr		= ethtool_op_get_perm_addr,

	.get_sg			= ethtool_op_get_sg,

	.set_sg			= setScatterGather,

	.get_tx_csum		= ethtool_op_get_tx_csum,

	.set_tx_csum		= setTxCsum,

	.get_rx_csum		= getRxCsum,

	.set_rx_csum		= setRxCsum,

};

drivers/net/sk98lin/skge.c

+30 −36
Original line number Diff line number Diff line
@@ -2189,13 +2189,10 @@ rx_start: 
			skb_put(pMsg, FrameLength);

		} /* frame > SK_COPY_TRESHOLD */



#ifdef USE_SK_RX_CHECKSUM

		if (pRxPort->RxCsum) {

			pMsg->csum = pRxd->TcpSums;

			pMsg->ip_summed = CHECKSUM_HW;

#else

		pMsg->ip_summed = CHECKSUM_NONE;

#endif



		}



		SK_DBG_MSG(NULL, SK_DBGMOD_DRV,	1,("V"));

		ForRlmt = SK_RLMT_RX_PROTOCOL;
@@ -4149,6 +4146,7 @@ SK_BOOL DualNet; 
			Flags);

		break;

	case SK_DRV_NET_UP:	 /* SK_U32 PortIdx */

	{	struct net_device *dev = pAC->dev[Param.Para32[0]];

		/* action list 5 */

		FromPort = Param.Para32[0];

		SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
@@ -4232,22 +4230,12 @@ SK_BOOL DualNet; 
			printk("    irq moderation:  disabled\n");





#ifdef SK_ZEROCOPY

		if (pAC->ChipsetType)

#ifdef USE_SK_TX_CHECKSUM

			printk("    scatter-gather:  enabled\n");

#else

			printk("    tx-checksum:     disabled\n");

#endif

		else

			printk("    scatter-gather:  disabled\n");

#else

			printk("    scatter-gather:  disabled\n");

#endif



#ifndef USE_SK_RX_CHECKSUM

			printk("    rx-checksum:     disabled\n");

#endif

		printk("    scatter-gather:  %s\n",

		       (dev->features & NETIF_F_SG) ? "enabled" : "disabled");

		printk("    tx-checksum:     %s\n",

		       (dev->features & NETIF_F_IP_CSUM) ? "enabled" : "disabled");

		printk("    rx-checksum:     %s\n",

		       pAC->RxPort[Param.Para32[0]].RxCsum ? "enabled" : "disabled");



		} else {

                        DoPrintInterfaceChange = SK_TRUE;
@@ -4262,9 +4250,9 @@ SK_BOOL DualNet; 
		}



		/* Inform the world that link protocol is up. */

		netif_carrier_on(pAC->dev[Param.Para32[0]]);



		netif_carrier_on(dev);

		break;

	}

	case SK_DRV_NET_DOWN:	 /* SK_U32 Reason */

		/* action list 7 */

		SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
@@ -4871,15 +4859,18 @@ static int __devinit skge_probe_one(struct pci_dev *pdev, 
	SET_NETDEV_DEV(dev, &pdev->dev);

	SET_ETHTOOL_OPS(dev, &SkGeEthtoolOps);



#ifdef SK_ZEROCOPY

#ifdef USE_SK_TX_CHECKSUM

	if (pAC->ChipsetType) {

	/* Use only if yukon hardware */

		/* SK and ZEROCOPY - fly baby... */

		dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;

	}

	if (pAC->ChipsetType) {

#ifdef USE_SK_TX_CHECKSUM

		dev->features |= NETIF_F_IP_CSUM;

#endif

#ifdef SK_ZEROCOPY

		dev->features |= NETIF_F_SG;

#endif

#ifdef USE_SK_RX_CHECKSUM

		pAC->RxPort[0].RxCsum = 1;

#endif

	}



	pAC->Index = boards_found++;
@@ -4944,14 +4935,17 @@ static int __devinit skge_probe_one(struct pci_dev *pdev, 
		SET_NETDEV_DEV(dev, &pdev->dev);

		SET_ETHTOOL_OPS(dev, &SkGeEthtoolOps);



#ifdef SK_ZEROCOPY

#ifdef USE_SK_TX_CHECKSUM

		if (pAC->ChipsetType) {

			/* SG and ZEROCOPY - fly baby... */

			dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;

		}

#ifdef USE_SK_TX_CHECKSUM

			dev->features |= NETIF_F_IP_CSUM;

#endif

#ifdef SK_ZEROCOPY

			dev->features |= NETIF_F_SG;

#endif

#ifdef USE_SK_RX_CHECKSUM

			pAC->RxPort[1].RxCsum = 1;

#endif

		}



		if (register_netdev(dev)) {

			printk(KERN_ERR "sk98lin: Could not register device for seconf port.\n");