From 17cd0a59f9c34164c4f3bfe404894f5285bac112 Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Sun, 24 Aug 2008 05:33:55 +0200 Subject: [PATCH] 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 --- drivers/net/mv643xx_eth.c | 25 +++---------------------- 1 file changed, 3 insertions(+), 22 deletions(-) diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c index 3831a8bffbd..53cfd01b405 100644 --- a/drivers/net/mv643xx_eth.c +++ b/drivers/net/mv643xx_eth.c @@ -57,15 +57,8 @@ static char mv643xx_eth_driver_name[] = "mv643xx_eth"; static char mv643xx_eth_driver_version[] = "1.3"; -#define MV643XX_ETH_CHECKSUM_OFFLOAD_TX #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. */ @@ -464,7 +457,7 @@ static void __txq_maybe_wake(struct tx_queue *txq) */ 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); } @@ -855,7 +848,7 @@ static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev) 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); if (txq->index == mp->txq_primary && net_ratelimit()) 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; 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); } @@ -2656,14 +2649,8 @@ static int mv643xx_eth_probe(struct platform_device *pdev) dev->watchdog_timeo = 2 * HZ; 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->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM; -#endif 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", 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) dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n"); -- 2.41.1