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git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-25 12:24:35 +02:00
[ramips] fixes rx path for eth, spinlock it, increases buffer size, board now survives ping -f
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18212 3c298f89-4303-0410-b956-a3cf2f4a3e73
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b08f29cbc9
commit
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@ -28,7 +28,7 @@
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#include "ramips_eth.h"
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#include "ramips_eth.h"
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#define TX_TIMEOUT (20 * HZ / 100)
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#define TX_TIMEOUT (20 * HZ / 100)
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#define MAX_RX_LENGTH 1500
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#define MAX_RX_LENGTH 1600
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#ifdef CONFIG_RALINK_RT305X
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#ifdef CONFIG_RALINK_RT305X
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#include "ramips_esw.c"
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#include "ramips_esw.c"
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@ -147,7 +147,7 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev)
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unsigned long tx;
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unsigned long tx;
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unsigned int tx_next;
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unsigned int tx_next;
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unsigned int mapped_addr;
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unsigned int mapped_addr;
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unsigned long flags;
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if(priv->plat->min_pkt_len)
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if(priv->plat->min_pkt_len)
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{
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{
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@ -166,35 +166,30 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev)
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mapped_addr = (unsigned int)dma_map_single(NULL, skb->data, skb->len,
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mapped_addr = (unsigned int)dma_map_single(NULL, skb->data, skb->len,
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DMA_TO_DEVICE);
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DMA_TO_DEVICE);
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dma_sync_single_for_device(NULL, mapped_addr, skb->len, DMA_TO_DEVICE);
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dma_sync_single_for_device(NULL, mapped_addr, skb->len, DMA_TO_DEVICE);
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spin_lock_irqsave(&priv->page_lock, flags);
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tx = ramips_fe_rr(RAMIPS_TX_CTX_IDX0);
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tx = ramips_fe_rr(RAMIPS_TX_CTX_IDX0);
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if(tx == NUM_TX_DESC - 1)
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if(tx == NUM_TX_DESC - 1)
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tx_next = 0;
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tx_next = 0;
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else
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else
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tx_next = tx + 1;
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tx_next = tx + 1;
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if((priv->tx_skb[tx] == 0) && (priv->tx_skb[tx_next] == 0))
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if((priv->tx_skb[tx]) || (priv->tx_skb[tx_next]) ||
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{
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!(priv->tx[tx].txd2 & TX_DMA_DONE) || !(priv->tx[tx_next].txd2 & TX_DMA_DONE))
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if(!(priv->tx[tx].txd2 & TX_DMA_DONE) || !(priv->tx[tx_next].txd2 & TX_DMA_DONE))
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goto out;
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{
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priv->tx[tx].txd1 = mapped_addr;
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kfree_skb(skb);
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priv->tx[tx].txd2 &= ~(TX_DMA_PLEN0_MASK | TX_DMA_DONE);
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dev->stats.tx_dropped++;
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priv->tx[tx].txd2 |= TX_DMA_PLEN0(skb->len);
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printk(KERN_ERR "%s: dropping\n", dev->name);
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dev->stats.tx_packets++;
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return 0;
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dev->stats.tx_bytes += skb->len;
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}
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priv->tx_skb[tx] = skb;
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priv->tx[tx].txd1 = virt_to_phys(skb->data);
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wmb();
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priv->tx[tx].txd2 &= ~(TX_DMA_PLEN0_MASK | TX_DMA_DONE);
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ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0);
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priv->tx[tx].txd2 |= TX_DMA_PLEN0(skb->len);
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spin_unlock_irqrestore(&priv->page_lock, flags);
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wmb();
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return NETDEV_TX_OK;
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ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0);
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out:
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dev->stats.tx_packets++;
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spin_unlock_irqrestore(&priv->page_lock, flags);
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dev->stats.tx_bytes += skb->len;
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dev->stats.tx_dropped++;
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priv->tx_skb[tx] = skb;
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kfree_skb(skb);
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wmb();
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return NETDEV_TX_OK;
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ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0);
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} else {
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dev->stats.tx_dropped++;
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kfree_skb(skb);
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}
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return 0;
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}
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}
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static void
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static void
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@ -216,7 +211,6 @@ ramips_eth_rx_hw(unsigned long ptr)
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rx_skb = priv->rx_skb[rx];
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rx_skb = priv->rx_skb[rx];
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rx_skb->len = RX_DMA_PLEN0(priv->rx[rx].rxd2);
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rx_skb->len = RX_DMA_PLEN0(priv->rx[rx].rxd2);
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rx_skb->tail = rx_skb->data + rx_skb->len;
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rx_skb->dev = dev;
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rx_skb->dev = dev;
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rx_skb->protocol = eth_type_trans(rx_skb, dev);
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rx_skb->protocol = eth_type_trans(rx_skb, dev);
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rx_skb->ip_summed = CHECKSUM_NONE;
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rx_skb->ip_summed = CHECKSUM_NONE;
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@ -224,7 +218,7 @@ ramips_eth_rx_hw(unsigned long ptr)
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dev->stats.rx_bytes += rx_skb->len;
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dev->stats.rx_bytes += rx_skb->len;
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netif_rx(rx_skb);
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netif_rx(rx_skb);
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new_skb = __dev_alloc_skb(MAX_RX_LENGTH + 2, GFP_DMA | GFP_ATOMIC);
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new_skb = netdev_alloc_skb(dev, MAX_RX_LENGTH + 2);
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priv->rx_skb[rx] = new_skb;
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priv->rx_skb[rx] = new_skb;
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BUG_ON(!new_skb);
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BUG_ON(!new_skb);
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skb_reserve(new_skb, 2);
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skb_reserve(new_skb, 2);
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@ -384,6 +378,7 @@ ramips_eth_probe(struct net_device *dev)
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dev->mtu = MAX_RX_LENGTH;
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dev->mtu = MAX_RX_LENGTH;
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dev->tx_timeout = ramips_eth_timeout;
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dev->tx_timeout = ramips_eth_timeout;
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dev->watchdog_timeo = TX_TIMEOUT;
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dev->watchdog_timeo = TX_TIMEOUT;
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spin_lock_init(&priv->page_lock);
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return 0;
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return 0;
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}
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}
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