diff options
| -rw-r--r-- | target/linux/ramips/files/drivers/net/ramips.c | 51 |
1 files changed, 23 insertions, 28 deletions
diff --git a/target/linux/ramips/files/drivers/net/ramips.c b/target/linux/ramips/files/drivers/net/ramips.c index b1cc5504d..e78eb6f8d 100644 --- a/target/linux/ramips/files/drivers/net/ramips.c +++ b/target/linux/ramips/files/drivers/net/ramips.c @@ -28,7 +28,7 @@ #include "ramips_eth.h" #define TX_TIMEOUT (20 * HZ / 100) -#define MAX_RX_LENGTH 1500 +#define MAX_RX_LENGTH 1600 #ifdef CONFIG_RALINK_RT305X #include "ramips_esw.c" @@ -147,7 +147,7 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev) unsigned long tx; unsigned int tx_next; unsigned int mapped_addr; - + unsigned long flags; if(priv->plat->min_pkt_len) { @@ -166,35 +166,30 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev) mapped_addr = (unsigned int)dma_map_single(NULL, skb->data, skb->len, DMA_TO_DEVICE); dma_sync_single_for_device(NULL, mapped_addr, skb->len, DMA_TO_DEVICE); + spin_lock_irqsave(&priv->page_lock, flags); tx = ramips_fe_rr(RAMIPS_TX_CTX_IDX0); if(tx == NUM_TX_DESC - 1) tx_next = 0; else tx_next = tx + 1; - if((priv->tx_skb[tx] == 0) && (priv->tx_skb[tx_next] == 0)) - { - if(!(priv->tx[tx].txd2 & TX_DMA_DONE) || !(priv->tx[tx_next].txd2 & TX_DMA_DONE)) - { - kfree_skb(skb); - dev->stats.tx_dropped++; - printk(KERN_ERR "%s: dropping\n", dev->name); - return 0; - } - priv->tx[tx].txd1 = virt_to_phys(skb->data); - priv->tx[tx].txd2 &= ~(TX_DMA_PLEN0_MASK | TX_DMA_DONE); - priv->tx[tx].txd2 |= TX_DMA_PLEN0(skb->len); - wmb(); - ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0); - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - priv->tx_skb[tx] = skb; - wmb(); - ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0); - } else { - dev->stats.tx_dropped++; - kfree_skb(skb); - } - return 0; + if((priv->tx_skb[tx]) || (priv->tx_skb[tx_next]) || + !(priv->tx[tx].txd2 & TX_DMA_DONE) || !(priv->tx[tx_next].txd2 & TX_DMA_DONE)) + goto out; + priv->tx[tx].txd1 = mapped_addr; + priv->tx[tx].txd2 &= ~(TX_DMA_PLEN0_MASK | TX_DMA_DONE); + priv->tx[tx].txd2 |= TX_DMA_PLEN0(skb->len); + dev->stats.tx_packets++; + dev->stats.tx_bytes += skb->len; + priv->tx_skb[tx] = skb; + wmb(); + ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0); + spin_unlock_irqrestore(&priv->page_lock, flags); + return NETDEV_TX_OK; +out: + spin_unlock_irqrestore(&priv->page_lock, flags); + dev->stats.tx_dropped++; + kfree_skb(skb); + return NETDEV_TX_OK; } static void @@ -216,7 +211,6 @@ ramips_eth_rx_hw(unsigned long ptr) rx_skb = priv->rx_skb[rx]; rx_skb->len = RX_DMA_PLEN0(priv->rx[rx].rxd2); - rx_skb->tail = rx_skb->data + rx_skb->len; rx_skb->dev = dev; rx_skb->protocol = eth_type_trans(rx_skb, dev); rx_skb->ip_summed = CHECKSUM_NONE; @@ -224,7 +218,7 @@ ramips_eth_rx_hw(unsigned long ptr) dev->stats.rx_bytes += rx_skb->len; netif_rx(rx_skb); - new_skb = __dev_alloc_skb(MAX_RX_LENGTH + 2, GFP_DMA | GFP_ATOMIC); + new_skb = netdev_alloc_skb(dev, MAX_RX_LENGTH + 2); priv->rx_skb[rx] = new_skb; BUG_ON(!new_skb); skb_reserve(new_skb, 2); @@ -384,6 +378,7 @@ ramips_eth_probe(struct net_device *dev) dev->mtu = MAX_RX_LENGTH; dev->tx_timeout = ramips_eth_timeout; dev->watchdog_timeo = TX_TIMEOUT; + spin_lock_init(&priv->page_lock); return 0; } |