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mv643xx_eth: get rid of compile-time configurable transmit checksumming 

Get rid of the mv643xx_eth-internal MV643XX_ETH_CHECKSUM_OFFLOAD_TX
compile-time option.  Using transmit checksumming is the sane default,
and anyone wanting to disable it should use ethtool(8) instead of
recompiling their kernels.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
This commit is contained in:
Lennert Buytenhek 2008-08-24 05:33:55 +02:00 committed by Lennert Buytenhek
parent 2257e05c17
commit 17cd0a59f9
1 changed files with 3 additions and 22 deletions
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25
drivers/net/mv643xx_eth.c
View File

@ -57,15 +57,8 @@
static char mv643xx_eth_driver_name[] = "mv643xx_eth"; static char mv643xx_eth_driver_name[] = "mv643xx_eth";
static char mv643xx_eth_driver_version[] = "1.3"; static char mv643xx_eth_driver_version[] = "1.3";
#define MV643XX_ETH_CHECKSUM_OFFLOAD_TX
#define MV643XX_ETH_TX_FAST_REFILL #define MV643XX_ETH_TX_FAST_REFILL
#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX
#define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1)
#else
#define MAX_DESCS_PER_SKB 1
#endif
/* /*
* Registers shared between all ports. * Registers shared between all ports.
*/ */
@ -464,7 +457,7 @@ static void __txq_maybe_wake(struct tx_queue *txq)
*/ */
BUG_ON(txq->index != mp->txq_primary); BUG_ON(txq->index != mp->txq_primary);
if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB) if (txq->tx_ring_size - txq->tx_desc_count >= MAX_SKB_FRAGS + 1)
netif_wake_queue(mp->dev); netif_wake_queue(mp->dev);
} }
@ -855,7 +848,7 @@ static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
txq = mp->txq + mp->txq_primary; txq = mp->txq + mp->txq_primary;
if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) { if (txq->tx_ring_size - txq->tx_desc_count < MAX_SKB_FRAGS + 1) {
spin_unlock_irqrestore(&mp->lock, flags); spin_unlock_irqrestore(&mp->lock, flags);
if (txq->index == mp->txq_primary && net_ratelimit()) if (txq->index == mp->txq_primary && net_ratelimit())
dev_printk(KERN_ERR, &dev->dev, dev_printk(KERN_ERR, &dev->dev,
@ -873,7 +866,7 @@ static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
int entries_left; int entries_left;
entries_left = txq->tx_ring_size - txq->tx_desc_count; entries_left = txq->tx_ring_size - txq->tx_desc_count;
if (entries_left < MAX_DESCS_PER_SKB) if (entries_left < MAX_SKB_FRAGS + 1)
netif_stop_queue(dev); netif_stop_queue(dev);
} }
@ -2656,14 +2649,8 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
dev->watchdog_timeo = 2 * HZ; dev->watchdog_timeo = 2 * HZ;
dev->base_addr = 0; dev->base_addr = 0;
#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX
/*
* Zero copy can only work if we use Discovery II memory. Else, we will
* have to map the buffers to ISA memory which is only 16 MB
*/
dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM; dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM;
#endif
SET_NETDEV_DEV(dev, &pdev->dev); SET_NETDEV_DEV(dev, &pdev->dev);
@ -2677,12 +2664,6 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n", dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n",
mp->port_num, print_mac(mac, dev->dev_addr)); mp->port_num, print_mac(mac, dev->dev_addr));
if (dev->features & NETIF_F_SG)
dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n");
if (dev->features & NETIF_F_IP_CSUM)
dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n");
if (mp->tx_desc_sram_size > 0) if (mp->tx_desc_sram_size > 0)
dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n"); dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n");