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Commit 77ecaf2d authored by Dai Haruki's avatar Dai Haruki Committed by David S. Miller
Browse files

gianfar: Fix VLAN HW feature related frame/buffer size calculation. 



Optimize the VLAN checking logic as well.

Signed-off-by: default avatarDai Haruki <dai.haruki@freescale.com>
Acked-by: default avatarAndy Fleming <afleming@freescale.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 12dea57b

drivers/net/gianfar.c

+21 −15
Original line number Diff line number Diff line
@@ -149,7 +149,7 @@ MODULE_LICENSE("GPL"); 
/* Returns 1 if incoming frames use an FCB */

static inline int gfar_uses_fcb(struct gfar_private *priv)

{

	return (priv->vlan_enable || priv->rx_csum_enable);

	return priv->vlgrp || priv->rx_csum_enable;

}



static int gfar_of_init(struct net_device *dev)
@@ -376,8 +376,6 @@ static int gfar_probe(struct of_device *ofdev, 
		dev->vlan_rx_register = gfar_vlan_rx_register;



		dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;



		priv->vlan_enable = 1;

	}



	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) {
@@ -1078,9 +1076,6 @@ int startup_gfar(struct net_device *dev) 
		rctrl |= RCTRL_EMEN;

	}



	if (priv->vlan_enable)

		rctrl |= RCTRL_VLAN;



	if (priv->padding) {

		rctrl &= ~RCTRL_PAL_MASK;

		rctrl |= RCTRL_PADDING(priv->padding);
@@ -1241,8 +1236,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) 
		gfar_tx_checksum(skb, fcb);

	}



	if (priv->vlan_enable &&

			unlikely(priv->vlgrp && vlan_tx_tag_present(skb))) {

	if (priv->vlgrp && vlan_tx_tag_present(skb)) {

		if (unlikely(NULL == fcb)) {

			fcb = gfar_add_fcb(skb, txbdp);

			status |= TXBD_TOE;
@@ -1344,11 +1338,15 @@ static void gfar_vlan_rx_register(struct net_device *dev, 
{

	struct gfar_private *priv = netdev_priv(dev);

	unsigned long flags;

	struct vlan_group *old_grp;

	u32 tempval;



	spin_lock_irqsave(&priv->rxlock, flags);



	priv->vlgrp = grp;

	old_grp = priv->vlgrp;



	if (old_grp == grp)

		return;



	if (grp) {

		/* Enable VLAN tag insertion */
@@ -1360,6 +1358,7 @@ static void gfar_vlan_rx_register(struct net_device *dev, 
		/* Enable VLAN tag extraction */

		tempval = gfar_read(&priv->regs->rctrl);

		tempval |= RCTRL_VLEX;

		tempval |= (RCTRL_VLEX | RCTRL_PRSDEP_INIT);

		gfar_write(&priv->regs->rctrl, tempval);

	} else {

		/* Disable VLAN tag insertion */
@@ -1370,9 +1369,16 @@ static void gfar_vlan_rx_register(struct net_device *dev, 
		/* Disable VLAN tag extraction */

		tempval = gfar_read(&priv->regs->rctrl);

		tempval &= ~RCTRL_VLEX;

		/* If parse is no longer required, then disable parser */

		if (tempval & RCTRL_REQ_PARSER)

			tempval |= RCTRL_PRSDEP_INIT;

		else

			tempval &= ~RCTRL_PRSDEP_INIT;

		gfar_write(&priv->regs->rctrl, tempval);

	}



	gfar_change_mtu(dev, dev->mtu);



	spin_unlock_irqrestore(&priv->rxlock, flags);

}
@@ -1383,14 +1389,9 @@ static int gfar_change_mtu(struct net_device *dev, int new_mtu) 
	int oldsize = priv->rx_buffer_size;

	int frame_size = new_mtu + ETH_HLEN;



	if (priv->vlan_enable)

	if (priv->vlgrp)

		frame_size += VLAN_HLEN;



	if (gfar_uses_fcb(priv))

		frame_size += GMAC_FCB_LEN;



	frame_size += priv->padding;



	if ((frame_size < 64) || (frame_size > JUMBO_FRAME_SIZE)) {

		if (netif_msg_drv(priv))

			printk(KERN_ERR "%s: Invalid MTU setting\n",
@@ -1398,6 +1399,11 @@ static int gfar_change_mtu(struct net_device *dev, int new_mtu) 
		return -EINVAL;

	}



	if (gfar_uses_fcb(priv))

		frame_size += GMAC_FCB_LEN;



	frame_size += priv->padding;



	tempsize =

	    (frame_size & ~(INCREMENTAL_BUFFER_SIZE - 1)) +

	    INCREMENTAL_BUFFER_SIZE;

drivers/net/gianfar.h

+5 −4
Original line number Diff line number Diff line
@@ -206,8 +206,10 @@ extern const char gfar_driver_version[]; 
#define RCTRL_PRSDEP_INIT	0x000000c0

#define RCTRL_PROM		0x00000008

#define RCTRL_EMEN		0x00000002

#define RCTRL_CHECKSUMMING	(RCTRL_IPCSEN \

		| RCTRL_TUCSEN | RCTRL_PRSDEP_INIT)

#define RCTRL_REQ_PARSER	(RCTRL_VLEX | RCTRL_IPCSEN | \

				 RCTRL_TUCSEN)

#define RCTRL_CHECKSUMMING	(RCTRL_IPCSEN | RCTRL_TUCSEN | \

				RCTRL_PRSDEP_INIT)

#define RCTRL_EXTHASH		(RCTRL_GHTX)

#define RCTRL_VLAN		(RCTRL_PRSDEP_INIT)

#define RCTRL_PADDING(x)	((x << 16) & RCTRL_PAL_MASK)
@@ -754,8 +756,7 @@ struct gfar_private { 
	phy_interface_t interface;

	char	phy_bus_id[BUS_ID_SIZE];

	u32 device_flags;

	unsigned char vlan_enable:1,

		rx_csum_enable:1,

	unsigned char rx_csum_enable:1,

		extended_hash:1,

		bd_stash_en:1,

		wol_en:1; /* Wake-on-LAN enabled */