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| author | Auke Kok <auke-jan.h.kok@intel.com> | 2006-05-23 19:29:53 +0200 |
|---|---|---|
| committer | Auke Kok <juke-jan.h.kok@intel.com> | 2006-05-23 19:29:53 +0200 |
| commit | f017f14b3f18b38f2388e7d6e83a7f6997ee9dd6 (patch) | |
| tree | f4afafd176b7b8a1635e58dfa2f24f859dce9ed4 /drivers/net/ixgb | |
| parent | ixgb: fix flow control (diff) | |
| download | linux-f017f14b3f18b38f2388e7d6e83a7f6997ee9dd6.tar.xz linux-f017f14b3f18b38f2388e7d6e83a7f6997ee9dd6.zip | |
ixgb: add NETIF_F_LLTX analogous to e1000
add NETIF_F_LLTX code like e1000 has
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Diffstat (limited to 'drivers/net/ixgb')
| -rw-r--r-- | drivers/net/ixgb/ixgb_main.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index 13181c4f1d20..466cbe208ef2 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -449,6 +449,9 @@ ixgb_probe(struct pci_dev *pdev, #ifdef NETIF_F_TSO netdev->features |= NETIF_F_TSO; #endif +#ifdef NETIF_F_LLTX + netdev->features |= NETIF_F_LLTX; +#endif if(pci_using_dac) netdev->features |= NETIF_F_HIGHDMA; @@ -1408,13 +1411,26 @@ ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) return 0; } +#ifdef NETIF_F_LLTX + local_irq_save(flags); + if (!spin_trylock(&adapter->tx_lock)) { + /* Collision - tell upper layer to requeue */ + local_irq_restore(flags); + return NETDEV_TX_LOCKED; + } +#else spin_lock_irqsave(&adapter->tx_lock, flags); +#endif + if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) { netif_stop_queue(netdev); spin_unlock_irqrestore(&adapter->tx_lock, flags); - return 1; + return NETDEV_TX_BUSY; } + +#ifndef NETIF_F_LLTX spin_unlock_irqrestore(&adapter->tx_lock, flags); +#endif if(adapter->vlgrp && vlan_tx_tag_present(skb)) { tx_flags |= IXGB_TX_FLAGS_VLAN; @@ -1426,6 +1442,9 @@ ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) tso = ixgb_tso(adapter, skb); if (tso < 0) { dev_kfree_skb_any(skb); +#ifdef NETIF_F_LLTX + spin_unlock_irqrestore(&adapter->tx_lock, flags); +#endif return NETDEV_TX_OK; } @@ -1439,7 +1458,15 @@ ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev) netdev->trans_start = jiffies; - return 0; +#ifdef NETIF_F_LLTX + /* Make sure there is space in the ring for the next send. */ + if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) + netif_stop_queue(netdev); + + spin_unlock_irqrestore(&adapter->tx_lock, flags); + +#endif + return NETDEV_TX_OK; } /** |