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Code Issues

ramips: fix tx bql related race condition in the ethernet driver

Browse Source 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 43995
This commit is contained in:
Felix Fietkau 2015-01-17 13:13:55 +00:00
parent 748d452899
commit 00db07be58
1 changed files with 5 additions and 4 deletions
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9
target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c
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@ -568,6 +568,9 @@ static int fe_tx_map_dma(struct sk_buff *skb, struct net_device *dev,
/* store skb to cleanup */
priv->tx_skb[j] = skb;
netdev_sent_queue(dev, skb->len);
skb_tx_timestamp(skb);
wmb();
j = NEXT_TX_DESP_IDX(j);
fe_reg_w32(j, FE_REG_TX_CTX_IDX0);
@ -646,6 +649,7 @@ static int fe_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct net_device_stats *stats = &dev->stats;
u32 tx;
int tx_num;
int len = skb->len;
if (fe_skb_padto(skb, priv)) {
netif_warn(priv, tx_err, dev, "tx padding failed!\n");
@ -669,11 +673,8 @@ static int fe_start_xmit(struct sk_buff *skb, struct net_device *dev)
stats->tx_dropped++;
} else {
netdev_sent_queue(dev, skb->len);
skb_tx_timestamp(skb);
stats->tx_packets++;
stats->tx_bytes += skb->len;
stats->tx_bytes += len;
}
spin_unlock(&priv->page_lock);