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r8169: revert "add byte queue limit support". 

This reverts commit 036dafa28d.

First it appears in bisection, then reverting it solves the usual
netdev watchdog problem for different people. I don't have a proper
fix yet so get rid of it.

Bisected-and-reported-by: Alex Villacís Lasso <a_villacis@palosanto.com>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Josh Boyer <jwboyer@redhat.com>
Cc: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Francois Romieu 2012-07-23 22:55:55 +02:00 committed by David S. Miller
parent 13378cad02
commit 17bcb684f0
1 changed files with 5 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/net/ethernet/realtek/r8169.c
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@ -5656,7 +5656,6 @@ static void rtl8169_tx_clear(struct rtl8169_private *tp)
{
rtl8169_tx_clear_range(tp, tp->dirty_tx, NUM_TX_DESC);
tp->cur_tx = tp->dirty_tx = 0;
netdev_reset_queue(tp->dev);
}
static void rtl_reset_work(struct rtl8169_private *tp)
@ -5811,8 +5810,6 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb,
txd->opts2 = cpu_to_le32(opts[1]);
netdev_sent_queue(dev, skb->len);
skb_tx_timestamp(skb);
wmb();
@ -5909,16 +5906,9 @@ static void rtl8169_pcierr_interrupt(struct net_device *dev)
rtl_schedule_task(tp, RTL_FLAG_TASK_RESET_PENDING);
}
struct rtl_txc {
int packets;
int bytes;
};
static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp)
{
struct rtl8169_stats *tx_stats = &tp->tx_stats;
unsigned int dirty_tx, tx_left;
struct rtl_txc txc = { 0, 0 };
dirty_tx = tp->dirty_tx;
smp_rmb();
@ -5937,24 +5927,17 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp)
rtl8169_unmap_tx_skb(&tp->pci_dev->dev, tx_skb,
tp->TxDescArray + entry);
if (status & LastFrag) {
struct sk_buff *skb = tx_skb->skb;
txc.packets++;
txc.bytes += skb->len;
dev_kfree_skb(skb);
u64_stats_update_begin(&tp->tx_stats.syncp);
tp->tx_stats.packets++;
tp->tx_stats.bytes += tx_skb->skb->len;
u64_stats_update_end(&tp->tx_stats.syncp);
dev_kfree_skb(tx_skb->skb);
tx_skb->skb = NULL;
}
dirty_tx++;
tx_left--;
}
u64_stats_update_begin(&tx_stats->syncp);
tx_stats->packets += txc.packets;
tx_stats->bytes += txc.bytes;
u64_stats_update_end(&tx_stats->syncp);
netdev_completed_queue(dev, txc.packets, txc.bytes);
if (tp->dirty_tx != dirty_tx) {
tp->dirty_tx = dirty_tx;
/* Sync with rtl8169_start_xmit: